JP2012035754A - Conveyance truck moving system, conveying line and conveying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveyance truck moving system that can perform work in vertical two steps of a lower side to base components, and an upper and lateral sides to base components, in the same time zone by separate operators.SOLUTION: The conveyance truck moving system 1 is configured to continuously move a plurality of conveyance trucks 3 which mount base components 8 to assembly working processes. In between conveyance trucks 3 which adjoin mutually, an upper part workbench 7 is built over the plurality of posts 44D of the conveyance truck 3A and the plurality of posts 44C of the conveyance truck 3B. On a floor 2 which the conveyance truck 3 moves, a fixed workbench 15 is installed on lateral both sides of a moving direction D of the conveyance truck 3 to the upper part workbench 7. The conveyance truck moving system 1 is configured to allow an operator M work to the base components 8 in the workbenches of vertical two steps including the lower side workbench 5, and the upper side workbench 7 and the fixed workbench 15, when the plurality of conveyance truck 3 continuously move.

Description

  The present invention relates to a transport system, a transport line, and a transport method for transporting workpieces on a factory assembly line.

  For example, in an automobile assembly line, a main body serving as a base part is placed on a transport carriage, and various assembly parts are attached to the main body while moving the transport carriage. For example, in the assembly transportation device such as an automobile disclosed in Patent Document 1, it is synchronized with the transport carriage from the start position to the end position of the specific section below the specific section where the parts are assembled in the travel route of the transport carriage. A movable traveling carriage is provided, and a transfer device is mounted on the synchronous traveling vehicle, and an assembly part such as an engine is mounted to the vehicle body on the transport carriage by the transfer device to a height at which it can be easily assembled. Lifting is disclosed.

Further, for example, in the vehicle body position correction transport system disclosed in Patent Document 2, when the vehicle body placed on the transport carriage is transported to a plurality of processes, a lift mechanism is mounted on the transport carriage, and the lift mechanism allows It is disclosed that the height of the vehicle body can be changed.
Further, for example, in the transport carriage with a lifting function of Patent Document 3, it is disclosed that the left and right guide posts are used to support and transport the vehicle body by the receiving member.

JP 2009-248657 A JP-A-9-309473 JP 2009-1182 A

However, in the main body (vehicle body) of an automobile and the like, the assembly height for assembling various assembly parts is different, so it is necessary to change the conveyance height of the main body with respect to the floor of the factory in each assembly process. Arise. For example, in the trim process for assembling interior parts, the main body is transported near the floor surface, while in the chassis process for assembling undercarriage parts, fuel tanks, etc., it is necessary to lift and transport the main body to a high position. .
And in the assembly line | wire of the conventional motor vehicle, the device which a different worker can perform the assembly | attachment operation | work in the upper and lower two steps | paragraphs of the downward direction with respect to a main body and the upper direction and a side with respect to a main body is not made | formed. .

  The present invention has been made in view of such conventional problems, and the work in the upper and lower stages of the lower part with respect to the base part and the upper part and the lateral part with respect to the base part is performed by different workers at the same time zone. It is an object of the present invention to provide a transporting cart moving system that can carry out the above.

The present invention is a transport cart moving system configured to move a plurality of transport carts for placing base components to a work process continuously.
The transport carriage includes a base carriage portion in which a plurality of posts for standing and mounting the base component is placed, and a lower work bench disposed on the base carriage portion,
The plurality of posts are composed of a plurality of one-side posts erected on one side portion of the base carriage part, and a plurality of other-side posts erected on the other side part of the base carriage part,
Between the transport carts adjacent to each other, an upper work platform is placed between the upper portions of the other plurality of posts in the transport cart on one side and the upper portions of the first post in the transport cart on the other side. Have passed,
On the floor surface on which the transport carriage moves, fixed work benches are installed on both the left and right sides in the moving direction of the transport carriage with respect to the upper work bench,
When a plurality of the transport carts move continuously, an operator can work on the base component on the upper and lower two stages of the lower work table, the upper work table, and the fixed work table. It is in the conveyance trolley movement system characterized by the above-mentioned (claim 1).

  In the transporting carriage moving system of the present invention, a lower work bench is disposed in the base carriage section, and base parts are provided for the plurality of one-side posts and the plurality of other-side posts erected on the base carriage section. Position and place. In the lower work platform, there are no obstacles on the worker's scaffolding other than the plurality of posts, and the worker can perform work such as assembling the assembly parts from the lower side with respect to the base part using the lower work platform as a scaffold. It can be carried out.

Further, in the transport cart moving system of the present invention, when a plurality of transport carts are continuously moved, between the transport carts adjacent to each other, upper portions of the plurality of other posts in the one transport cart and the other side The upper work platform is bridged to the upper portions of the plurality of one-side posts in the transport cart. Then, the worker can perform an operation such as assembling the assembly component from above and from the side with respect to the base component using the upper work platform as a scaffold.
In addition, fixed work tables are installed on both the left and right sides of the upper work table, so that the operator can move from the fixed work table to the upper work table located back and forth with respect to the base part. It is possible to move freely between the table and the upper work table.

As described above, in the present invention, when a plurality of transport carts move continuously, the operator can use the base component in the upper and lower work platforms of the lower work table, the upper work table, and the fixed work table. Thus, it is possible to perform operations such as assembly of assembly parts. The worker who works on the lower work table and the worker who works on the upper work table and the fixed work table can be different persons.
Therefore, according to the transporting cart moving system of the present invention, the work in the upper and lower two stages of the lower part with respect to the base part and the upper part and the side with respect to the base part can be performed by different workers in the same time zone.

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows the conveyance trolley | bogie movement system at the time of forming the work stand of the upper and lower two steps | paragraphs concerning an Example from the front-back direction. Explanatory drawing which shows the conveyance trolley | bogie movement system at the time of forming the work stand of 2 steps | paragraphs of upper and lower directions concerning the Example in the state seen from the left-right direction. Explanatory drawing which shows the state which looked at the conveyance trolley | bogie movement system concerning an Example from upper direction. Explanatory drawing which shows the state which looked at the other conveyance trolley | bogie movement system concerning an Example from upper direction. Explanatory drawing which shows the base trolley | bogie part of the conveyance trolley | bogie concerning an Example in the state seen from the downward direction. Explanatory drawing which shows the work trolley | bogie part (downward workbench) of the conveyance trolley | bogie concerning an Example in the state seen from upper direction. Explanatory drawing which shows the state which moves the upper work platform in use concerning an Example. Explanatory drawing which shows the conveyance trolley | bogie which formed the 1st movement state and 2nd movement state concerning the Example in the state seen from the left-right direction. Explanatory drawing which shows the conveyance trolley | bogie which formed the 1st movement state concerning an Example in the state seen from the left-right direction. Explanatory drawing which shows the conveyance trolley | bogie which formed the 1st movement state concerning the Example in the state seen from the front-back direction. Explanatory drawing which expands and shows a part of conveyance trolley | bogie which formed the 1st movement state concerning an Example in the state seen from the front-back direction. Explanatory drawing which shows the conveyance trolley | bogie which formed the 2nd movement state concerning an Example in the state seen from the left-right direction. Explanatory drawing which shows the conveyance trolley | bogie which formed the 2nd movement state concerning an Example in the state seen from the front-back direction. Explanatory drawing which expands and shows a part of conveyance trolley | bogie which formed the 2nd movement state concerning an Example in the state seen from the front-back direction. Explanatory drawing which shows the arrangement | positioning relationship when the conveyance trolley | bogie movement system concerning an Example is employ | adopted as the conveyance line for motor vehicle production lines.

A preferred embodiment of the above-described transporting carriage moving system of the present invention will be described.
In the present invention, it is preferable that the work floor surface of the upper work bench is located at a position higher than the lower surface of the base part.
In this case, when an earthquake occurs, the upper work table can prevent the base component from falling from the plurality of posts.

  In addition, one side stay is provided at the upper part of the plurality of one side posts, and the other side stay is provided at the upper part of the plurality of other side posts, and the upper work table is adjacent to each other. Between the transfer carriages, and detachably spans between the upper portions of the plurality of other stays in the transfer carriage on one side and the upper portions of the plurality of one side stays in the other transfer carriage. (Claim 3).

In this case, the upper workbench can be removed from the plurality of other side posts and the plurality of one side posts when the operator does not need to work on the upper side and the side of the base part. That is, in the work process in which the worker performs work only on the lower work table, the upper work table can be removed from the transport carriage, and the fixed work table can not be installed on the floor on which the transport carriage moves. Thus, when the upper work table is not used, the scaffold for the lower work table can be brightened.
Further, in this case, when an earthquake occurs in a state where the upper workbench is detached from the plurality of other side posts and the plurality of one side posts, there are a plurality of base parts due to the presence of the one side stay and the other side stay. Can be prevented from falling from one post to the other side.

In addition, the lower work table includes a one-side extending portion that extends further to the one-side tip than the positions of the plurality of one-side posts, and a further extension to the other-side tip than the positions of the plurality of the other-side posts. And when the plurality of transport carts move continuously, the other side extension of the one transport cart is between the adjacent transport carts. It is preferable that the installation portion and the one-side extension portion of the other transport carriage are in contact with each other so that the lower work table is continuous with each other.
In this case, by appropriately setting the formation lengths of the one-side extending portion and the other-side extending portion, it is possible to appropriately secure an interval between the transport carts that are continuously moved. And according to the space | interval between this conveyance trolley, the formation width of the front-back direction of an upper work bench | platform can be set.

  The lower work platform is a work carriage unit that is supported so as to be movable up and down with respect to the plurality of one-side posts and the plurality of other-side posts, and that forms an operator's scaffold on the upper side of the base carriage unit. In addition, the plurality of carriages that are continuously moved are in contact with the base carriage part in rolling contact with the underfloor pit and the work carriage part in rolling contact with the floor surface or directly below the floor surface. The base carriage part is in rolling contact with the floor surface or directly below the floor surface with the first movement state in which the part is moved integrally and the work carriage part placed on the upper side, and the two carriage parts are integrated. Forming a second movement state to be moved to, and maintaining the state where the base component is positioned and placed with respect to the plurality of one side posts and the plurality of other side posts, Above first moving state and above The upper workbench is configured to switch between the second movement state, and the upper workbench is configured to transfer the one side when the first movement state is formed in the plurality of carriages that move continuously. The second moving state is removed from the upper part of the plurality of other side posts in the carriage and from the upper part of the plurality of one side posts in the other side carriage carriage, while the plurality of carriages continuously move. When forming, it is preferable to attach to the upper part of the said other one side post in the said one side conveyance trolley, and the upper part of the said one side post in the said other side conveyance trolley as needed. Item 5).

In this case, the carriage can maintain the state where the base part is positioned and placed, and can be continuously moved to a plurality of work processes having different work height ranges of the worker relative to the base part.
Specifically, the transporting carriage includes a base carriage unit in which a plurality of posts are erected and a work carriage unit that is supported so as to be movable up and down with respect to the plurality of posts. In the process in which the worker works from above and from the side of the base part, the transport carriage forms a first movement state, and the base carriage part is brought into rolling contact with the underfloor pit and the work carriage part is placed on the floor. Rolling contact is made between the surface or just below the floor, and the two trolley parts are moved together. As a result, the work platform appropriately secures the worker's scaffolding without causing obstacles on the worker's scaffolding other than multiple posts and without forming a large step between the floor of the factory. can do. Then, the worker can perform work such as assembling the assembly parts from above and from the side of the base part using the work carriage as a scaffold.

  Moreover, when forming the 1st movement state of a conveyance trolley, an upper work platform removes from the upper part of the some other side post in the one side conveyance trolley, and the upper part of the some one side post in the other side conveyance trolley. Keep it. Thereby, it can avoid that an upper work bench becomes an obstacle of the operator who works using a work trolley part as a scaffold.

Here, the underfloor pit can be formed by digging down from the floor of the factory. There are decks (high ground) on both sides of the place where the transport carriage moves on the floor of the factory. It can also be formed lower.
Moreover, the state which makes a base trolley part roll-contact between underfloor pits can be formed by providing a roller in either a base trolley part or an underfloor pit. Similarly, the state in which the work carriage unit is brought into rolling contact with the floor surface or just below the floor surface can be formed by providing rollers on either the work carriage portion and the floor surface or just below the floor surface. .

  On the other hand, in the process in which the operator works from below the base part, the transport carriage forms the second movement state, and the base carriage part is placed on the floor surface or in a state where the work carriage part is placed on the upper side of the base carriage part. The two trucks are moved together in rolling contact with the floor surface. As a result, the work platform appropriately secures the worker's scaffolding without causing obstacles on the worker's scaffolding other than multiple posts and without forming a large step between the floor of the factory. can do. Then, the worker can perform an operation such as assembling the assembly component from below the base component using the work carriage unit as a scaffold.

  Moreover, when forming the 2nd movement state of a conveyance trolley, an upper work platform is the upper part of the some other side post in one side conveyance trolley, and the some one side post in the other conveyance cart as needed. Attach to the top of the. Thereby, the operator in the work cart part as the lower work table can work downward with respect to the base part, and the worker in the upper work table can work upward and laterally with respect to the base part. .

Here, the floor directly under the floor can be formed by digging slightly from the floor of the factory, and both sides of the factory floor where the transport carriage moves are provided with lower decks. It can also be formed lower than the other deck.
Moreover, the state which makes a base trolley part roll-contact between a floor surface or just under a floor surface can provide and form a roller in either a base trolley part and a floor surface or just under a floor surface.

  In this way, the transport cart changes the relative height relationship between the base cart portion and the work cart portion, thereby maintaining the state where the base parts are positioned and placed on the plurality of posts while maintaining the work of the operator. It is possible to move to a plurality of work processes having different height ranges. This eliminates the need for transfer of base parts between a plurality of transport carts, transfer of base parts between a transport cart and a lift transport device, etc., and transport control of base parts in each work process. Can be easy.

In addition, since the work carriage unit is provided in the transport carriage itself to form the worker's scaffold, the worker's scaffold can be appropriately secured in any work process in which the transport carriage is moved.
Further, the transport cart is not provided with a mechanism for raising and lowering the work cart section. Thereby, the structure of a conveyance trolley can be simplified very much. Moreover, the same conveyance trolley can be used in a plurality of work processes, and the structure of the entire conveyance line for moving the conveyance trolley can be greatly simplified.

In addition, the plurality of transport carts that move continuously may use the work floor surface of the work cart section as a factory floor when forming either the first movement state or the second movement state. It is preferable to move the surface substantially the same as the upper surface of the deck provided on the surface or the floor surface.
In this case, no step is formed between the work floor surface of the work carriage unit and the floor surface or deck of the factory, and the worker can walk smoothly between them. Therefore, workability by the worker can be improved.

In addition, the working carriage part can be raised and lowered by rolling contact with the plurality of posts, the base carriage part is in rolling contact with the underfloor pit, and the base carriage part is the floor surface. Alternatively, the state of rolling contact between the floor surface and the floor surface is formed by providing a plurality of rollers on either the base carriage unit, the floor pit and the floor surface or the floor surface, The state in which the work carriage part is in rolling contact with the floor surface or just below the floor surface is formed by providing a plurality of rollers on either the work carriage part and the floor surface or just below the floor surface. (Claim 7).
In this case, the work carriage part can be easily raised and lowered with respect to the base carriage part, and the base carriage part and the work carriage part can be stably brought into rolling contact with the plurality of rollers. The roller can be composed of rolling members such as wheels, rollers, and balls.

Preferably, the plurality of transport carts that are continuously moved are driven by drive rollers that rotate and come into contact with the left and right of the base cart portion and feed the base cart portion between them.
In this case, a plurality of transport carts can be moved simultaneously and continuously in the transport line by a simple method.

  Further, a different aspect of the present invention is a transport line for an automobile production line that uses the transport cart moving system to assemble various assembly parts to the main body of the automobile as the base part, The transfer line includes a pit line that moves the transfer carriage by forming the first movement state, and a floor line that moves the transfer carriage by forming the second movement state, and the transfer carriage The transfer body is lifted by a transfer device and moved between the pit line and the floor line, thereby maintaining the state where the main body is positioned and placed on the plurality of posts, The pit line, the floor surface line, and a transfer line configured to move continuously between these pit lines (claim 9).

  The conveyance line of the present invention forms a first movement state or a second movement state with respect to the pit line and the floor surface line, moves the conveyance carriage, and performs assembling work of various assembling parts to the base part. It is what I do. And in the conveyance line of this invention, a conveyance trolley can be lifted with a transfer apparatus, and can be moved between a pit line and a floor surface line. As a result, the state where the main body is positioned and placed on the plurality of posts can be maintained, and the transport carriage can be continuously moved between the pit line, the floor surface line, and between them. Therefore, the structure of the transfer carriage itself and the transfer line for moving the transfer carriage can be extremely simplified.

  Another different aspect of the present invention is a transportation method for an automobile production line in which various assembly parts are assembled to the main body of the automobile as the base part using the transportation carriage moving system. A pit line for forming the first movement state and moving the transport carriage, and a floor line for forming the second movement state and moving the transport carriage, and By lifting the transfer device between the pit line and the floor line, the main body is positioned and placed on the plurality of posts to maintain the state, and the transport carriage is A pit line, the floor line, and a conveying method characterized by continuously moving between them (claim 10).

  In the transport method of the present invention, as in the case of the transport line, the main body is positioned and placed on a plurality of posts, and the transport cart is moved to the pit line, the floor surface line, and between them. Can be moved continuously. Therefore, the structure of the conveyance carriage itself and the conveyance line using the conveyance carriage can be extremely simplified.

In the following, an embodiment according to the transporting carriage moving system of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the transport cart moving system 1 of this example is configured to continuously move a plurality of transport carts 3 on which the base component 8 is placed to the assembly work process.
The transport carriage 3 includes a base carriage section 4 in which a plurality of posts 44 for standing and placing the base component 8 is placed, and a lower work table 5 disposed on the base carriage section 4. Yes. The plurality of posts 44 includes a plurality of one-side posts 44 </ b> C erected on one side portion of the base carriage unit 4, and a plurality of other-side posts 44 </ b> D erected on the other side portion of the base carriage unit 4.

  Between the transport carts 3 adjacent to each other, the upper work platform 7 is located above the plurality of other side posts 44D in the one side transport cart 3A and above the plurality of one side posts 44C in the other side transport cart 3B. It is bridged. On the floor surface 2 on which the transport carriage 3 moves, fixed work benches 15 are installed on both the left and right sides of the transport carriage 3 in the movement direction D with respect to the upper work bench 7. When a plurality of transport carts 3 are continuously moved, the transport cart moving system 1 is arranged on the base component 8 on the upper and lower work platforms 5 of the lower work platform 5, the upper work platform 7 and the fixed work platform 15. On the other hand, the worker M is configured to be able to work.

Below, it demonstrates in full detail with reference to FIGS. 1-15 about the conveyance trolley | bogie movement system 1, the conveyance line 100, and the conveyance method of this example.
FIG. 1 shows the conveyance carriage 3 when forming the upper and lower two-stage worktables as viewed from the front-rear direction L, and FIG. 2 shows the conveyance carriage 3 when forming the upper and lower two-stage worktables in the left-right direction. Shown as viewed from W. In this example, the front-rear direction L refers to the front-rear direction of the main body 8 and the front-rear direction of the transport carriage 3 on which the main body 8 is placed. The left-right direction W refers to the left-right direction of the main body 8 and the left-right direction of the transport carriage 3 on which the main body 8 is placed. In FIG. 1 to FIG. 15, the letters A to D after the numerals are shown in parentheses.

As shown in FIGS. 1 and 2, the base part 8 of this example is a main body 8 of an automobile, and the transporting cart moving system 1 of this example is used for an automobile production line. The main body 8 transported by the transport carriage 3 includes various vehicle types having different overall lengths.
As shown in FIG. 8, the lower work table 5 of the present example is supported so as to be movable up and down with respect to the plurality of one side posts 44 </ b> C and the plurality of other side posts 44 </ b> D and on the upper side with respect to the base carriage unit 4. It is formed as a work carriage section 5 that forms a scaffold.

  When using the fixed work table 15 and the upper work table 7, the transport cart 3 of this example points the left-right direction W of the main body 8 placed on the transport cart 3 in the movement direction D (the travel direction of the cart). Moving. Therefore, the directions on one side and the other side of the transport carriage 3 are the front-rear direction L of the transport carriage 3 and the main body 8.

  As shown in FIG. 9 and FIG. 10, the transport cart 3 that continuously moves a plurality of units is in contact with the base cart portion 4 while being in contact with the underfloor pit 21, and the work cart portion 5 is the floor surface 2 or 22 directly below the floor surface. And a base carriage with the work carriage 5 placed on the upper side as shown in FIGS. 12 and 13. The part 4 is in rolling contact with the floor surface 2 or directly below the floor surface 22 to form one of the second movement states 302 in which the two cart parts 4 and 5 are moved integrally. The transport carriage 3 is formed by switching between the first movement state 301 and the second movement state 302 while maintaining the state where the main body 8 is positioned and placed on the plurality of posts 44. , 302 is also configured such that the base carriage unit 4 and the work carriage unit 5 are accommodated in the floor surface 2 and moved.

As shown in FIGS. 1 and 13, the upper work table 7 of the present example includes upper portions of a plurality of other side posts 44 </ b> D in the one side transport carriage 3 </ b> A and upper portions of a plurality of one side posts 44 </ b> C in the other side transport cart 3 </ b> B. It can be attached to and detached from. As shown in FIGS. 9 and 10, the upper work table 7 has a plurality of other-side posts in the one-side transport cart 3 </ b> A when the first moving state 301 is formed in the transport cart 3 that continuously moves. 44D is removed from the upper part of the plurality of one side posts 44C in the upper part of 44D and the other side transport carriage 3B, and on the other hand, as shown in FIG. 1 and FIG. When forming 302, it attaches to the upper part of a plurality of other side posts 44D in one side conveyance cart 3A, and the upper part of a plurality of one side posts 44C in the other side conveyance cart 3B as needed.
That is, in the assembly work process in which the worker M works only on the lower work table 5, the upper work table 7 is removed from the transport cart 3 and the fixed work table 15 is not installed on the floor on which the transport cart 3 moves. be able to. Thereby, when not using the upper workbench 7, the scaffold of the lower workbench 5 can be made bright.

  As shown in FIGS. 3, 5, and 6, four posts 44 are erected from the base carriage unit 4 of this example, two in the front, rear, left, and right side and upward. Of the four posts 44, two front posts 44 </ b> A are fixed to the base cart portion 4, and two rear posts 44 </ b> B of the four posts 44 are front and rear with respect to the base cart portion 4. It is configured to slide in the direction L. The two rear posts 44B can be slid in the front-rear direction L by slide mechanisms 42 arranged on the left and right sides of the base carriage unit 4, respectively. The slide mechanism 42 of this example is configured by using two linear guides arranged in the front-rear direction L. The linear guide is a rail attached to the base carriage unit 4 and a slider that is in rolling contact with the rail. It consists of.

As shown in FIGS. 11 and 14, the work carriage unit 5 can move up and down by rolling contact with the four posts 44. Each post 44 is in contact with a roller 53 disposed on the work carriage unit 5, and the work carriage unit 5 can be moved up and down by the roller 53.
The work carriage unit 5 is formed with through holes 52 through which the four posts 44 are respectively inserted. Each through hole 52 through which the two rear posts 44B that slide in the front-rear direction L are inserted is formed long in the front-rear direction L (see FIG. 6).

As shown in FIGS. 6, 11, and 14, the bracket 441 provided at the upper ends of the two front posts 44 </ b> A is loaded with a positioning pin 45 for positioning the main body 8 and a lower portion of the main body 8. A receptacle 46 is provided for each. A positioning hole for inserting the positioning pin 45 is formed in the lower part of the main body 8 of all vehicle types. Further, the bracket 441 provided at the upper ends of the two posts 44B on the rear side is provided with a weight receiver 46 that receives the lower portion of the main body 8.
The two rear posts 44 </ b> B change the slide position in the front-rear direction L by the slide mechanism 42 according to the vehicle type of the main body 8 to be placed, and the slide position is fixed by the lock mechanism 43.

  As shown in FIG. 3, the main body 8 of this example is placed on the four posts 44 of the transport carriage 3 with the front-rear direction L aligned with the front-rear direction L of the transport carriage 3. The transport carriage 3 is movable in the front-rear direction L and the left-right direction W. As shown in FIGS. 5 and 6, the transport carriage 3 includes a first traveling direction D 1 parallel to the front-rear direction L of the main body 8 placed on the four posts 44 and a main placed on the four posts 44. The body 8 can be switched and moved in a second traveling direction D2 parallel to the left-right direction W of the body 8.

  In the first movement state 301 of the transport carriage 3 in this example, as shown in FIGS. 9 and 10, rollers 41 as a plurality of rollers provided in the base carriage section 4 roll on the rail 211 provided in the underfloor pit 21. At the same time, the rollers 221 as a plurality of rollers provided on the floor surface 2 or directly below the floor surface 22 are formed in a state of rolling contact with the lower surface of the work carriage unit 5. Further, as shown in FIGS. 12 and 13, the second movement state 302 of the transport carriage 3 includes a plurality of rollers 41 as rollers provided on the base carriage section 4 with the work carriage section 5 placed on the upper side. It is formed in a state of rolling contact on the rail 222 provided immediately below the surface 22.

  In addition, although illustration is abbreviate | omitted, instead of providing a plurality of rollers 41 in the base carriage unit 4, a plurality of rollers may be provided in the underfloor pit 21, the floor surface 2 or the floor surface 22 where the base carriage unit 4 is in rolling contact. it can. Further, instead of providing the plurality of rollers 221 on the floor surface 2 or directly below the floor surface 22, a plurality of rollers may be provided on the work carriage unit 5.

  FIG. 5 is a view showing the lower surface of the base carriage unit 4. As shown in the figure, a plurality of rollers 41 for causing the base carriage unit 4 to make rolling contact with the rails 211 and 222 protrude from the lower surface of the base carriage unit 4. In the base carriage unit 4, a plurality of rollers 41A are arranged in the front-rear direction L at the left and right positions on the lower surface, and a plurality of rollers 41B are arranged in the left-right direction W at the front and rear positions on the lower surface. .

In this example, as shown in FIGS. 12 and 13, the second movement state 302 of the transport carriage 3 is formed such that the lateral direction W of the transport carriage 3 and the main body 8 is directed in the movement direction D of the transport carriage 3.
As shown in FIGS. 1 and 2, one side stay 73 </ b> A for guiding the main body 8 so as not to drop to one side of the transport carriage 3 is provided at the upper part of the two one side posts 44 </ b> C. On the upper side of the other side post 44D, other side stays 73B for guiding the main body 8 so as not to fall to the other side of the transport carriage 3 are provided. If necessary, the upper work table 7 is provided between the adjacent transport carts 3 and above the plurality of other stays 73B in the one transport cart 3A and the one side stays 73A in the other transport cart 3B. It is detachably mounted on the top of the.

The work floor surface of the upper workbench 7 is higher than the lower surface of the main body 8. Thereby, it is possible to prevent the main body 8 from falling from the plurality of posts 44 by the upper work table 7 when an earthquake occurs.
The one-side stay 73A and the other-side stay 73B are arranged on the upper part of the two one-side posts 44C or the two other-side posts 44D in the entire assembly work process for moving the transport carriage 3 that has formed the second movement state 302. It is provided at the top. Thereby, even when the upper workbench 7 is removed from the two other side posts 44D and the two one side posts 44C, the main body 8 falls to one side or the other side when an earthquake occurs. Can be prevented.

As shown in FIG. 1 and FIG. 14, the opposing position of the upper end of any two of the two one side stays 73 </ b> A and the two other side stays 73 </ b> B and the lower surface of the upper workbench 7 facing the upper end. Are provided with pins and pin holes 731 for positioning the upper workbench 7. All the fall prevention stays 73 are formed with receiving portions 732 for receiving the upper work table 7.
As shown in FIG. 2, the fixed work table 15 can be provided in a part of the process of performing assembly work from above and from the side of the main body 8 using the upper work table 7. The fixed work table 15 is formed by a gantry provided with a floor plate 151 that serves as a scaffold for the worker M.
The fixed work table 15 of this example is installed adjacent to the front side and the rear side of the main body 8 as both the left and right sides with respect to the movement direction D because the movement direction D of the transport carriage 3 is the left-right direction W of the main body 8. The

  As shown in FIG. 2 and FIG. 3, the upper workbench 7 is provided with stepped parts 72 positioned above the fixed workbench 15 at both left and right ends with respect to the moving direction D. The floor board part 71 located above each step part 72 is provided. And the height of the floor-plate part 71 is made as high as possible, and the upper space of the worker M who works on the work trolley part 5 (lower work table 5) is ensured.

On the upper surface of the tip portion of the fixed work table 15 of this example, a plurality of rollers 16 are provided as rollers that bring the stepped portions 72 of the upper work table 7 into rolling contact. Accordingly, when the plurality of transport carts 3 are moved, the movement of the upper work table 7 can be stabilized by bringing the plurality of rollers in the fixed work table 15 into rolling contact with the upper work table 7.
In addition, the roller 16 can also be provided below each staircase portion 72 in the upper work table 7.

When the upper workbench 7 is bridged to the left and right fixed worktables 15, as shown in FIG. 4, the upper workbench 7 is located on the front and rear portions 73 of the main body 8 and on the left and right of the main body 8. The portion 74 may be connected so as to surround the main body 8.
In addition, as shown in FIG. 7, the upper work table 7 can be moved on a rail 26 disposed below the floor surface 25 dug down from the floor surface 2 when it is not used across the transport carriage 3.

As shown in FIG. 2 and FIG. 3, the width in the front-rear direction L of the work carriage unit 5 (lower workbench 5) is larger than the width in the front-rear direction L of the base carriage unit 4. Is moved, the end portions on both the front and rear sides of the work carriage unit 5 are moved below the fixed work table 15.
When the second movement state 302 of the transport carriage 3 is formed and the fixed work table 15 and the upper work table 7 are used, the floor plate of the upper work table 7 from the work floor surface 50 of the work cart unit 5 (lower work table 5). The height to the lower surface of the part 71 can be made into the height of 1650-1800 mm, for example.
Further, as shown in the figure, when the second moving state 302 of the transport carriage 3 is formed and the fixed work table 15 and the upper work table 7 are used, the worker M may fall by the upper work table 7. The opening space is blocked.

Moreover, as shown in FIGS. 1 and 13, the work carriage unit 5 (the lower work table 5) includes a one-side extending part 55 </ b> A that extends further to the one-side tip than the positions of the plurality of one-side posts 44 </ b>C; It has the other side extension part 55B extended to the other side front-end | tip further than the position of several other side post 44D.
When a plurality of transport carts 3 are continuously moved, the transport cart moving system 1 is arranged between the transport carts 3 adjacent to each other and the other side extending portion 55B of the one transport cart 3A and the other transport The lower work table 5 is configured to be in contact with the one-side extending portion 55 </ b> A of the carriage 3 </ b> B so as to be continuous with each other.
By appropriately setting the formation lengths of the one-side extending portion 55A and the other-side extending portion 55B, it is possible to appropriately secure an interval between the transport carts 3 that are continuously moved. And according to the space | interval between this conveyance trolleys 3, the formation width of the front-back direction L of the upper work bench | platform 7 can be set.

The conveyance carriage 3 of this example is applied to an automobile production line in which various assembling parts are assembled to the main body 8 to constitute a conveyance line 100.
As shown in FIG. 15, this automobile production line includes a trim process 101 for assembling various interior parts to the main body 8, and various undercarriage parts, engines, fuel tanks, tires for the main body 8. And a final process 103 for assembling various electrical components, injecting oil and gas into the main body 8, and the like. The transport carriage 3 holds the main body 8 and travels through all the steps. After the assembled vehicle, which is the main body 8 that has been assembled, is sent out, the transport cart 3 circulates again to the first trim step 101 and moves. It is configured to

  In each of the trim process 101, chassis process 102, and final process 103, the transport carriage 3 is driven by a drive roller 23 disposed on the upstream side of the line in each process, and a plurality of units are connected to the rails 211 and 222. Is configured to move. The drive roller 23 is configured to rotationally contact the left and right sides of the base carriage unit 4 in the transport carriage 3 located on the most upstream side of each process line, and sandwich the base carriage unit 4 and send it out.

As shown in FIGS. 9 and 10, the transport line 100 includes a pit line 11 that forms a first movement state 301 and moves the transport carriage 3, and a second movement state 302 as shown in FIGS. 12 and 13. There is a floor line 12 that is formed and moves the carriage 3.
As shown in FIG. 15, the trim process 101 and the final process 103 are formed by the pit lines 11, and the chassis process 102 is formed by the floor line 12. The transport carriage 3 moves the pit line 11 in the first traveling direction D1 in the trimming process 101 and the final process 103, and moves the floor line 12 in the second traveling direction D2 in the chassis process 102.

9 to 11 show a case where the transport carriage 3 moves the pit line 11 in the first traveling direction D1, and in FIGS. 12 to 14, FIG. 1 and FIG. 2, the transport carriage 3 is a floor surface. The case where the line 12 is moved in the second traveling direction D2 is shown. In the chassis process 102, the transport carriage 3 can also move the floor line 12 in the first traveling direction D1.
The transport carriage 3 can move in either the first traveling direction D1 or the second traveling direction D2 in any of the pit line 11 and the floor surface line 12.

Further, the transport carriage 3 is driven by the drive roller 23 in any of the steps 101, 102, and 103, and moves continuously in the traveling directions D1 and D2. The conveyance line 100 of this example maintains the state where the main body 8 is positioned and placed on the four posts 44, and the conveyance carriage 3 is moved between the pit line 11, the floor surface line 12, and between these. It is configured to move continuously.
Further, as shown in FIGS. 9 to 14, the transport carriage 3 is configured so that the work floor of the work carriage unit 5 can be used in any of the movement states 301 and 302 of the first movement state 301 and the second movement state 302. The surface 50 is moved so that it is substantially flush with the floor 2 of the factory or the deck 24 provided on the floor 2 (see FIGS. 2 and 12).

As shown in FIG. 15, the transport carriage 3 is lifted and transported by the transfer devices 61, 62, 64 when moving between the steps 101, 102, 103. The transfer devices 61, 62, and 64 lift the base carriage unit 4 and the work carriage unit 5 of the transport carriage 3, respectively, and the first movement state 301 in which the relative height relationship between the base carriage unit 4 and the work carriage unit 5 is different. Or the 2nd movement state 302 is formed and it is comprised so that the conveyance trolley | bogie 3 may be mounted in the pit line 11 or the floor surface line 12. FIG.
The conveyance line 100 of this example is configured to reciprocate the conveyance carriage 3 in each of the trim process 101, the chassis process 102, and the final process 103.

  The main body 8 before assembling various assembling parts is positioned and placed on the transport carriage 3 carried into the trimming process 101. The transport carriage 3 is lifted by a carry-in lifting device 61 that is one of transfer devices, and is placed on one pit line 11 </ b> A forming the trim process 101. The transport carriage 3 positions and places the main body 8 and moves to one side of one pit line 11A of the trim process 101 in the first traveling direction D1. Next, the transport carriage 3 that has moved to one side of one pit line 11A in the trim step 101 is transported by the traverse device 63, and then in the first traveling direction D1 to the other side of the other pit line 11B in the trim step 101. Moving. The traverse device 63 receives the transport carriage 3 that moves one pit line 11A in the first traveling direction D1, moves the transport carriage 3 in the second traveling direction D2, and then sends it to the other pit line 11B. It is configured as follows.

  Next, when the transport carriage 3 moves in the first traveling direction D1 to the other side of the other pit line 11B in the trim step 101, the transport cart 3 moves in the second traveling direction D2 by the traverse device 63, and then the direction as a transfer device. It is lifted by the conversion device 64 and is turned by 90 ° and placed on one floor line 12C of the chassis process 102. Next, the transport cart 3 maintains the state in which the main body 8 is held, and moves in the second traveling direction D <b> 2 to one side of one floor line 12 </ b> C of the chassis process 102. Next, the transport carriage 3 that has moved to one side of one floor surface line 12C of the chassis step 102 is transported in the first traveling direction D1 by the traverse device 63, and then the other floor surface line 12D of the chassis step 102. Move to the second traveling direction D2. The traverse device 63 receives the transport cart 3 that moves the one floor surface line 12C in the second traveling direction D2, moves the transport cart 3 in the first traveling direction D1, and then moves the other floor surface line 12D. It is configured to send out.

  Next, when the transport carriage 3 moves in the second traveling direction D2 to the other side of the other floor surface line 12D of the chassis step 102, the transport cart 3 moves in the first traveling direction D1 by the traverse device 63, and then serves as a transfer device. It is lifted by the direction changing device 64 and turned 90 °, and placed on one pit line 11E of the final process 103. The transport carriage 3 positions and places the main body 8 and moves to the one side of one pit line 11E in the final process 103 in the first traveling direction D1. Next, the transport carriage 3 moved to one side of one pit line 11E in the final process 103 is transported by the traverse device 63, and then in the first traveling direction D1 to the other side of the other pit line 11F in the final process 103. Moving. The traverse device 63 receives the transport cart 3 that moves one pit line 11E in the first traveling direction D1, moves the transport cart 3 in the second traveling direction D2, and then sends the transport cart 3 to the other pit line 11F. It is configured as follows.

Next, when the transport carriage 3 moves in the first advancing direction D1 to the other side of the other pit line 11F in the final process 103, the main body 8 in which the assembly of various assembly parts has been completed is taken out from the transport carriage 3. . Further, the transport carriage 3 is lifted by a carry-out lifting device 62 that is one of the transfer devices, and is placed on the circulation line 65. Then, the empty transport carriage 3 that does not hold the main body 8 in the circulation line 65 is moved in the second traveling direction D2, and the main body 8 before the assembly of various assembly parts is held again on the transport carriage 3, It is carried into the trim process 101.
Thereafter, the plurality of transport carts 3 can circulate the trim process 101, the chassis process 102, and the final process 103 many times.

  As shown in FIGS. 1 to 3, the second movement state 302 of the conveyance carriage 3 of this example is formed in the chassis process 102, and the fixed work table 15 and the upper work table 7 are arranged in a part of the chassis process 102. Thus, the assembly work by the worker M can be performed from above and from the side of the main body 8. The upper work platform 7 is attached between the transport carts 3 adjacent to each other by a transfer device or the like when the transport cart 3 approaches the installation position of the fixed work platform 15, and the transport cart 3 passes the installation position of the fixed work platform 15. After that, it is removed from between the transport carts 3 adjacent to each other by a transfer device or the like.

The chassis process 102 is originally a process formed for the worker M to perform assembly work from below the main body 8. On the other hand, by using the fixed work table 15 and the upper work table 7, the chassis process for the assembly parts and the like that are originally assembled from the upper side and the side of the main body 8 in the trim process 101 or the final process 103. Can be done. In FIG. 15, an example of a layout in which the fixed work table 15 is disposed in the chassis process 102 is indicated by a two-dot chain line. Thereby, the length of the whole process of the trim process 101, the chassis process 102, and the final process 103 can be adjusted appropriately, and the freedom degree of the layout in a factory can be increased.
In the chassis process 102, the upper work table 7 removed from between the transport carts 3 is moved on the rails 26 arranged immediately below the floor surface 25 as shown in FIG. 7, and the upper work platform 7 is moved between the transport carts 3. It can be circulated to the mounting position.

The transport carriage 3 of this example maintains the state where the main body 8 is positioned and placed, and continuously moves to a plurality of assembly work steps in which the work height range of the worker M with respect to the main body 8 is different. It can be made to.
In the trim process 101 and the final process 103 in which the worker M works from the upper side and the side of the main body 8, the transport carriage 3 forms the first movement state 301 as shown in FIGS. A plurality of rollers 41 in the base carriage unit 4 are brought into rolling contact with the rail 211 of the underfloor pit 21 dug down from the floor 2 of the factory, and a plurality of rollers 221 provided with the lower surface of the work carriage unit 5 directly below the floor 22. The two cart parts 4 and 5 are moved together in a rolling contact with the top.

  At this time, both the base carriage unit 4 and the work carriage unit 5 can be accommodated in the floor 2 and moved. In addition, the transport cart 3 of this example is configured such that the work floor surface 50 of the work cart section 5 is substantially flush with the floor surface 2 and most of the plurality of posts 44 are accommodated in the floor surface 2 and moved. Can do. Thereby, there is almost no obstacle on the scaffolding of the worker M, and the scaffolding of the worker M can be appropriately secured by the work carriage unit 5 without forming a level difference with the floor surface 2. it can. The worker M can perform work such as assembling parts to be assembled from above and from the side of the main body 8 using the work carriage unit 5 as a scaffold.

  When the first movement state 301 of the transport carriage 3 is formed, the upper work table 7 is configured such that the upper work table 7 has a plurality of ones on the upper side of the plurality of other side posts 44D on the one side transport carriage 3A and a plurality of ones on the other transport carriage 3B. It is removed from the upper part of the side post 44C. Thereby, it can be avoided that the upper workbench 7 becomes an obstacle for the worker M who works using the work carriage unit 5 as a scaffold.

On the other hand, in the chassis process 102 where the worker M works from below the main body 8, the transport carriage 3 forms the second movement state 302 as shown in FIGS. In a state of being placed on the upper side of the base carriage unit 4, the plurality of rollers 41 in the base carriage unit 4 are brought into rolling contact with the rails 222 provided immediately below the floor surface 22, so that the two carriage units 4 and 5 are integrated. Move.
At this time, the base carriage unit 4 and the work carriage unit 5 can both be accommodated and moved in the deck 24 provided on the floor surface 2. Further, the transport cart 3 of this example is configured such that the work floor surface 50 of the work cart section 5 is substantially flush with the deck 24 and most parts other than the plurality of posts 44 are accommodated in the floor surface 2 and moved. Can do. Thereby, there is almost no obstacle on the scaffolding of the worker M, and the scaffolding of the worker M can be appropriately secured by the work carriage unit 5 without forming a level difference with the floor surface 2. it can. Then, the worker M can perform work such as assembling parts to be assembled from below the main body 8 using the work carriage unit 5 as a scaffold.

  Moreover, when forming the 2nd movement state 302 of the conveyance trolley 3, as shown in FIGS. 1-3, the upper work bench | platform 7 is made into the some other side in the conveyance trolley 3A of one side as needed. It is attached to the upper part of the post 44D and the upper part of the plurality of one side posts 44C in the transport cart 3B on the other side. Thereby, the operator M in the work cart unit 5 as the lower work table 5 can work downward with respect to the main body 8, and the worker in the upper work table 7 can move upward and laterally with respect to the main body 8. M can work. Then, the worker M can move from the fixed work table 15 to the upper work table 7 positioned forward and backward with respect to the main body 8, and freely move between the fixed work table 15 and the upper work table 7. can do.

Thus, in the transport cart moving system 1 of this example, when a plurality of transport carts 3 move continuously in a part of the chassis process 102, the work cart section 5 (lower work platform 5) and the upper In a two-stage work table including the work table 7 and the fixed work table 15, the worker M can perform operations such as assembling the assembly parts on the main body 8. The worker M who works on the lower work table 5 and the worker M who works on the upper work table 7 and the fixed work table 15 can be different persons.
Therefore, according to the transport cart moving system 1 of the present example, in a part of the chassis process 102, the work in the upper and lower two stages of the lower side with respect to the main body 8 and the upper side and the side with respect to the main body 8 is performed separately. It can be performed by the person M at the same time zone.

  In addition, the transport carriage 3 of this example changes the relative height relationship between the base carriage unit 4 and the work carriage unit 5 to position the main body 8 on the plurality of posts 44 and place the main body 8 on the post 44. It is possible to move to a plurality of assembling work processes with different assembling work height ranges of the worker M while maintaining it. Therefore, the transfer of the main body 8 between the plurality of transfer carts 3, the transfer of the main body 8 between the transfer cart 3 and the lift transfer device, etc. can be made unnecessary. The conveyance management of the main body 8 in the process can be simplified.

Further, since the work carriage unit 5 is provided on the transport carriage 3 itself to form the scaffolding of the worker M, the scaffolding of the worker M can be appropriately set in any assembly work process in which the transportation carriage 3 is moved. Can be secured. Further, in the transport carriage 3 of the present example, the slide mechanism 42 is not provided at the upper end portions of the two rear posts 44B, but is provided at the lower end portions of the two rear posts 44B. Thereby, the slide mechanism 42 does not exist above the work carriage unit 5, and there is no obstacle at the foot of the worker M, so that the workability can be improved.
Further, the transport carriage 3 is not provided with a mechanism for raising and lowering the work carriage section 5. Thereby, the structure of the conveyance trolley 3 can be made very simple. Moreover, the same conveyance trolley 3 can be used in a plurality of assembly operations, and the entire structure of the conveyance line 100 for moving the conveyance trolley 3 can be extremely simplified.

  Therefore, according to the transport cart moving system 1 of the present example, the transport cart 3 is continued between the plurality of assembly work steps while the main body 8 is positioned and placed with respect to the plurality of posts 44. The structure of the conveyance carriage 3 itself and the conveyance line 100 using the conveyance carriage 3 can be greatly simplified.

In addition to providing the rail 211 in the underfloor pit 21, a sensor such as an electromagnetic sensor is provided in the base carriage unit 4, and a sensor detection line that is detected by the sensor provided in the base carriage unit 4 is provided in the underfloor pit 21. The transport carriage 3 can be moved while detecting the transport path by the sensor.
Similarly to this, in addition to providing the rail 222 on the floor 2 or directly below the floor 22, a sensor such as an electromagnetic sensor is provided on the base carriage unit 4, and the sensor detection line is provided on the floor 2 or directly below the floor 22. It is also possible to move the transport carriage 3 while detecting the transport path by a sensor.
Moreover, a sensor can also be provided in the work trolley part 5, and a sensor detection line can also be provided in the part facing this.

DESCRIPTION OF SYMBOLS 1 Transfer trolley moving system 100 Transfer line 101 Trim process 102 Chassis process 103 Final process 11 Pit line 12 Floor surface line 15 Fixed work table 2 Floor surface 21 Floor digging pit 22 Directly below floor surface 23 Drive roller 3 Transport vehicle 3A One side Carriage Cart 3B Transport Cart 301 on the Other Side 301 First Movement State 302 Second Movement State 4 Base Cart Part 41 Roller 42 Slide Mechanism 44 Post 5 Working Cart Part (Downward Working Table)
55A One side extending portion 55B The other side extending portion 7 Upper work table 73A One side stay 73B The other side stay 8 Base parts (main body)

Claims (10)

In the transport cart moving system configured to move a plurality of transport carts for placing base parts to the work process continuously,
The transport carriage includes a base carriage portion in which a plurality of posts for standing and mounting the base component is placed, and a lower work bench disposed on the base carriage portion,
The plurality of posts are composed of a plurality of one-side posts erected on one side portion of the base carriage part, and a plurality of other-side posts erected on the other side part of the base carriage part,
Between the transport carts adjacent to each other, an upper work platform is placed between the upper portions of the other plurality of posts in the transport cart on one side and the upper portions of the first post in the transport cart on the other side. Have passed,
On the floor surface on which the transport carriage moves, fixed work benches are installed on both the left and right sides in the moving direction of the transport carriage with respect to the upper work bench,
When a plurality of the transport carts move continuously, an operator can work on the base component on the upper and lower two stages of the lower work table, the upper work table, and the fixed work table. A transport cart moving system characterized by the above-described configuration.   2. The transport cart movement system according to claim 1, wherein a work floor surface of the upper work bench is located at a position higher than a lower surface of the base part. In the conveyance cart movement system according to claim 1 or 2, the one side stay is provided in the upper part of said one side post, respectively.
On the top of the plurality of other side posts, the other side stays are respectively provided,
The upper work table is between the transport carts adjacent to each other, with respect to the upper portions of the plurality of other stays in the transport cart on one side and the upper portions of the plurality of one side stays in the transport cart on the other side. A transport system for the transporting carriage, which is detachably mounted. In the conveyance trolley moving system according to any one of claims 1 to 3, the lower work table includes a one-side extending portion that extends further to the one-side tip than the positions of the plurality of one-side posts. The other side extending portion further extended to the tip of the other side than the position of the plurality of other side posts,
When the plurality of transfer carriages move continuously, the other extension section of the one transfer carriage and the one extension of the other transfer carriage between the adjacent transfer carriages. A conveying cart moving system characterized in that the lower work table is made continuous with each other in contact with the installation portion. 4. The transportation cart moving system according to claim 2 or 3, wherein the lower work table is supported so as to be movable up and down with respect to the plurality of one side posts and the plurality of other side posts, and to the upper side with respect to the base cart unit. A working carriage part that forms a scaffold for the worker in
The plurality of transport carts that are continuously moved are in contact with the base carriage portion in rolling contact with an underfloor pit, and the work carriage portion is in rolling contact with the floor surface or directly below the floor surface so that the two carriage portions are separated. The base carriage part is in rolling contact with the floor surface or directly below the floor surface in the first movement state in which the work carriage part is placed on the upper side, and the two carriage parts are moved integrally. The second moving state is formed, and the base component is positioned and placed with respect to the plurality of one side posts and the plurality of other side posts, and the second moving state is maintained. It is configured to switch between the first movement state and the second movement state,
When the upper work platform forms the first movement state in the plurality of transport carts that move continuously, the upper work table and the other transport on the other side post in the one transport cart. In the case where the second moving state is formed in the transporting carriage that is removed from the upper part of the plurality of one-side posts in the carriage and is continuously moved, the one-side transporting carriage as necessary. A carriage moving system characterized by being attached to the upper part of the plurality of other side posts in the above and the upper part of the plurality of one side posts in the other side delivery carriage.   6. The transport cart moving system according to claim 5, wherein the transport cart that moves continuously is configured to perform the operation even when forming either the first moving state or the second moving state. A transportation cart moving system characterized in that the working floor surface of the cart section is moved so as to be substantially flush with the floor surface of the factory or the upper surface of the deck provided on the floor surface. In the conveyance trolley moving system according to claim 5 or 6, the work trolley part can be raised and lowered by rolling contact with the plurality of posts,
The state in which the base carriage part is in rolling contact with the underfloor pit and the state in which the base carriage part is in rolling contact with the floor surface or directly below the floor surface are the base carriage part and the underfloor pit. And formed with a plurality of rollers on either the floor surface or directly below the floor surface,
The state in which the work carriage part is in rolling contact with the floor surface or just below the floor surface is formed by providing a plurality of rollers on either the work carriage part and the floor surface or just below the floor surface. A transport cart moving system characterized by being.   In the conveyance cart moving system according to any one of claims 5 to 7, the plurality of conveyance carts that move continuously are rotated in contact with the left and right of the base cart portion, and the base cart portion is sandwiched and sent out. A transporting cart moving system characterized by being driven by a drive roller. A transport line for an automobile production line that uses the transport cart moving system according to any one of claims 5 to 8 to assemble various assembly parts to the main body of the automobile as the base part. There,
The transfer line includes a pit line that moves the transfer carriage by forming the first movement state, and a floor line that moves the transfer carriage by forming the second movement state,
Maintaining the state where the main body is positioned and placed on the plurality of posts by lifting the transfer carriage by a transfer device and moving between the pit line and the floor surface line, A conveyance line characterized in that the conveyance carriage is configured to continuously move between the pit line, the floor surface line, and between them. A transport method for an automobile production line that uses the transport cart moving system according to any one of claims 5 to 8 to assemble various assembly parts to the main body of the automobile as the base part. There,
Forming a pit line for moving the transport carriage by forming the first movement state and a floor line for moving the transport carriage by forming the second movement state;
Maintaining the state where the main body is positioned and placed on the plurality of posts by lifting the transfer carriage by a transfer device and moving between the pit line and the floor surface line, A transport method, wherein the transport cart is continuously moved between the pit line, the floor line, and between them.

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