JP2002012327A - Device for automatically opening/closing seal belt flotation preventing arm and its locking device as well as seal belt flotation preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically open/close or automatically lock a floatation preventing arm for a seal belt for covering a conveyor casing for a belt conveyor via which granulated solid materials including coals and ores are carried. SOLUTION: Underframes in a frame form are connected to the front and rear positions of a carrying truck. Each underframe has a guide frame for releasing a locking device for the flotation preventing arm for the seal belt, a guide frame for opening/closing the unlocked flotation preventing arm and a guide frame for keeping the opened flotation preventing arm in the opened condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic opening / closing device for a floating arm of a seal belt for covering a conveyor casing for transporting coal, ore and other particulate solids outdoors and a lock device therefor, and a floating device for a seal belt. Related to the device.

Specifically, an arm for preventing a seal belt from rising (hereinafter, referred to as a floating prevention arm) for covering a conveyor casing of a coal transport belt conveyor provided on a dedicated wharf near a coal-fired power plant is berthed to the wharf. A coal unloading machine that unloads coal from the coal carrier and supplies it to the belt conveyor.
It is used for automatic opening / closing and automatic locking with the reciprocating movement of the carrier.

[0003]

2. Description of the Related Art First, an outline of a coal transportation facility used in a coal-fired power plant will be described. At the dedicated wharf near the thermal power plant, there are two or more coal conveyor belts side by side, and one or two coal transport ships berthed at the dedicated wharf and one or two coal unloaders. The coal that has been unloaded is supplied to a conveyor belt for coal transportation and transported to a coal storage yard, where it is piled up in a coal yard by a stacker and stored. Then, in accordance with the coal consumption of each boiler, it is scooped by a reclaimer and sent to a coal bunker of each boiler by a belt conveyor.

[0004] In the above-mentioned coal transport equipment, the coal transport belt conveyor B, which is the object of the present invention, is arranged in parallel at about two stations at the high part of the dedicated wharf, and its total length is 6 per station.
Long facilities exceeding about 00m are provided. This belt conveyor is the first conveyor that is laid on a traflora and transports coal unloaded from coal mining equipment to a coal storage yard. Specifically, FIG. 11A and FIG. As shown, the left and right side walls 1 of the belt conveyor B, the left and right shoulder eaves 2 of the roof, and the bottom plate (not shown) are surrounded by a frame and a plate, and are formed inside a long conveyor casing T. Is housed.

In the upper part of the conveyor casing T,
An opening 3 is formed between the left and right shoulder eaves 2, and the opening 3 is formed with a seal belt S having a belt width of about 1.5 to 1.8 m.
Coal X transported by covering with a rubber belt called
Is prevented from scattering.

However, if the seal belt S is long and the opening 3 of the conveyor casing T is closed only by the weight of the stretched seal belt S by its own weight, the seal belt S floats due to wind pressure or the like in a strong wind. It can be a situation where you go up and roll up.

For this reason, on the upper portion of the seal belt S,
An arm 4 in the form of a square rod is provided to extend in a direction perpendicular to the arm, and the arm 4 is rotatably supported at the base end of the arm, and is closed by fastening the tip end of the arm with a pin 5 so that the seal belt S is lifted up. Preventing. This floating prevention arm 4
The upper side of the seal belt S is installed straddling at an interval of about 10 m in the longitudinal direction, and about 60 belts are attached to a belt conveyor in a plane fence shape.

[0008] On the other hand, in order to supply the coal X uncarried by the coal unloader to the belt conveyor B from the charging chute 6 of the carriage D provided in the coal unloader, a part of the seal belt S is opened. It is necessary to make the shooting chute 6 face.

For this reason, as shown in FIG. 12, a belt winding device including a guide roller 7 and an auxiliary roller 8 is formed at a front and rear position of a carrier D which moves following the reciprocation of the coal unloader. Among them, a part of the seal belt S is wound and stretched in a side-reverse trapezoidal shape by four front and rear guide rollers 7, thereby forming an opening 9 of the charging chute 6. Then, by opening and closing the belt winding device of the seal belt S following the advance and retreat movement of the transport vehicle D, the openings 9 are continuously formed between the guide rollers 7 one after another. The coal X is charged into the belt conveyor B from the charging chute 6 facing the. In the figure, R is a guide rail of the transport vehicle D, which is laid in a state of being juxtaposed at an upper position of the left and right side wall portions 1 of the conveyor casing T.

However, the carrier D equipped with the coal unloading machine and its input chute 6 moves forward and backward, and the coal X unloaded while being reciprocated between the bow and the stern of the coal transport ship berthed at the wharf is belted. When loading into conveyor B, transport cart D
The lifting prevention arm 4 of the seal belt S straddling the range of movement of the seal belt S interferes when the seal belt S is wound up.

Therefore, by the time the coal transport operation is started, the stop pin 5 at the arm tip of the levitation prevention arm 4 is
After the operator manually removes the arm, the arm is turned by about 90 degrees, and the tip of the arm that has turned to the outside position of the seal belt is again pinned to release the constraint of the seal belt S. . Therefore, conventionally, for all the surfacing prevention arms 4 laid across the moving range of the coal unloading machine, the worker repeatedly performs the opening work of the surfacing prevention arms 4 by hand while walking on the seat belt S. Is going. As a matter of course, after the coal unloading operation is completed, the operation of closing the floating prevention arm 4 is manually performed again in the reverse procedure to that described above.

[0012]

Therefore, it takes time and effort to open and close the levitation prevention arm as described above, and it usually rises to a seal belt of a coal transportation facility installed at a considerably high place on a pier. Therefore, not only is there a problem in terms of safety for the operator, but also because the arm opening / closing operation by hand is bent one by one and repeated one by one, there is no demand for a quick and labor-saving opening / closing operation. Further, sometimes, the opening and closing work of the floating prevention arm is delayed or cannot be started due to the wind and rain, which causes a situation that the coal unloading work is delayed or has to be stopped.

[0013]

Therefore, according to the present invention, as set forth in claim 1, a frame formed of a frame is connected to the front and rear positions of the carrier, and the frame is connected to the seal frame to prevent the floating of the seal belt. Consists of an unlocking guide frame that releases the arm locking device, an arm opening and closing guide frame that opens and closes the unlocked floating prevention arm, and an arm opening maintaining guide frame that maintains the open state of the opened floating prevention arm. The present invention provides an automatic opening and closing device for a floating prevention arm for a seal belt.

[0014] As a result, the levitation prevention arm laid across the moving range of the transport trolley is automatically opened, which can contribute to labor saving and rationalization of the arm opening / closing operation, and can be lifted without being affected by the weather. Can perform charcoal work. In particular, the levitation prevention arm within the range of the transporting trolley and the underframe that overhangs the front and rear positions is automatically opened, and the levitation prevention arm is laid across the other front and rear seat belts. In order to maintain the locked state, the seal belt is prevented from rising due to wind pressure and the like, and contributes to preventing the scattering of coal during transportation.

In this respect, in the case of the conventional manual surfacing prevention device, it is necessary to open all surfacing prevention arms between the bow and the stern of the coal carrier that has berthed in advance. In the case where the coal transport work from two of the coal carriers that have been carried out is carried out simultaneously, a total of 120 belt conveyors are operated in a fully opened state with two belt conveyors. For this reason, the seal belt at a position where the coal unloader is not located is easily lifted by wind pressure or the like, and a situation in which coal during transportation is scattered has occurred.

However, according to the automatic opening / closing device of the present invention, only the carrier and the levitation prevention arm within the range of the underframe projecting to the front and rear thereof are automatically opened / closed. With respect to a certain seat belt, the floating prevention arm is maintained in a state of being straddled, thereby preventing lifting due to wind pressure or the like, thereby contributing to the prevention of scattering of coal during transportation.

According to a second aspect of the present invention, a wheel which rolls along a guide rail of a carrier is provided on a frame formed of a frame, and a guide for unlocking a floating prevention arm is provided on one side of the frame. The frame is substantially parallel to the guide rail,
A lock device is provided on a line connecting the front and rear, and an arm opening maintaining guide frame is provided on the other side of the underframe on the other side of the carrier, on a line connecting the position near the base end of the floating prevention arm to the front and rear. The arm opening and closing guide frame is provided diagonally in plan view from one side of the underframe toward the other side,
The distal end of the arm opening / closing guide frame is formed at a position near the distal end of the unlocking guide frame, and the base end thereof is connected to the front and rear ends of the arm opening maintaining guide frame. Thereby, compared with the case where the underframe that protrudes to the front and rear positions of the transport vehicle is a lifting structure,
The tip portion does not sway due to wind pressure or the like, thereby enabling stable advance and retreat traveling, and opening and closing operation of the floating prevention arm can be performed reliably and smoothly.

According to a third aspect of the present invention, the lock device for the anti-floating arm is fixed to the shoulder eaves of the conveyor casing, a fitting groove cut out from the outside at the front and rear positions of the fixed base, and the fixing device. A pair of upright rods having a lower end pivotally provided at a lower position of the base, a partition plate fixed longitudinally to an inner portion of the upright rod, and fitted into the fitting groove,
Means for urging the upright rod in the upright direction. As a result, the engagement of the tip of the floating prevention arm
The detachment is performed reliably and smoothly.

According to the fourth aspect of the present invention, the shaft cylinder at the base end portion of the floating prevention arm and its rotating shaft are attached at a slight angle to the floating prevention arm which is closed in a substantially horizontal state. The leading end of the prevention arm is pushed up slightly obliquely upward to open, and the lifted lifting prevention arm is urged to automatically return in the arm closing direction by the potential energy.

According to a fifth aspect of the present invention, there is provided a seal belt floating prevention device having a seal belt floating prevention arm straddling the seal belt at right angles to the seal belt and supporting the lift prevention arm in a rotatable manner. A lock device is provided at a position facing the tip of the floating prevention arm so that the tip of the arm can be freely engaged and disengaged,
According to claim 6, the lock device is fixed to a shoulder eaves portion of a conveyor casing, a fitting groove cut out from the outside at the front and rear positions of the fixed table, and a lower end at a lower position of the fixed table. A pair of standing rods before and after pivoting the part,
A partition plate fixed to the inside of the upright rod in the vertical direction and fitted in the fitting groove, a guide piece obliquely provided above the partition plate, and a weight or a weight for urging the upright rod in the upright direction; 9. A device for preventing floating of a seal belt, comprising urging means such as a coil spring.
The lock device of the floating prevention arm described in (1).

According to a seventh aspect of the present invention, the fixing base at the base end of the floating prevention arm is fixed to the shoulder eaves of the conveyor casing.
The shaft cylinder of the floating prevention arm and its rotating shaft are attached to the bearing of the fixed base at a slight angle with respect to the floating prevention arm closed in a substantially horizontal state, and the rotating shaft has an engagement recess. At the position facing the cam plate, a rod biased by pivoting a roller at the tip is disposed, and the roller at the tip of the rod is fitted into the engagement recess of the cam plate. The device is a device for preventing the floating of the seal belt that supports the anti-floating arm by anti-sway by pressing and urging, or a device for preventing the anti-floating arm from oscillating.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outline of a carrier D which moves following the running of a coal unloading machine will be described with reference to FIGS. 1 (A), 1 (B) and 2, and FIG. The transport vehicle D is frame-shaped in a side trapezoidal frame shape, and a guide roller 7 of a seal belt S
Are supported by bearings, and the guide roller 7 has a seal belt S
Is wound up in an inverted trapezoidal shape when viewed from the side and stretched.
As a matter of course, the wheels 10 of the transport vehicle D are supported on the guide rails R, and the left and right positions of the bottom frame of the transport vehicle D are closed by the windshield skirt 11.

At the front and rear positions of the carriage D, a frame F projecting in the form of a flat ladder is connected and supported, and the frame F has side beams 12A and 12B juxtaposed at both left and right positions.
And a leading girder 13 connected to the leading ends of the side beams 12A and 12B, and a middle girder 14 and a rear girder 15 provided at the middle part thereof, which are laterally spaced apart from each other. Wheels 16 that roll along the guide rails R are attached to the left and right ends of the leading girder 13, and the base ends of the side beams 12A and 12B are connected to the bottom frame of the transport vehicle D by connecting joints J.
It is fixed by.

Reference numeral 17 denotes a guide frame (hereinafter, referred to as an unlocking guide frame) for releasing a lock device L of the floating prevention arm A, which will be described later. The lower side of the underframe F has one side beam 12A. If the conveyer casing T is arranged side by side over two inner and outer stations, for example, when the conveyor casing T is arranged side by side, the outer side beam 12A is parallel to the side beam 12A and the guide rail R and in a horizontal state. Attached to. Further, the distal end portion 1 of the unlocking guide frame 17
7A is extended to protrude beyond the leading girder 13, and the rear end 17 B thereof is connected to the guide roller 7 of the carriage D.
It extends to just below the area. The front end portion 17A and the rear end portion 17B of the guide frame 17 are both bent obliquely inward and slightly upward.

Reference numeral 18 denotes a guide frame (hereinafter referred to as an arm opening / closing guide frame) for opening and closing the unlocked floating prevention arm A, which is substantially horizontal below the underframe F and viewed in plan. The right and left side beams 12A and 12B are inclined at an angle of about 30 degrees from one side to the other side. This arm opening and closing guide frame 1
The distal end portion 18A of the base member 8 projects slightly forward from the leading girder 13 of the underframe F at a position near the unlocking guide frame 17, and is bent outward to form a base end portion 18B. Is bent backward at an obtuse angle,
It is mounted near the rear girder 15 near the other side beam 12B.

Reference numeral 19 denotes a guide frame for maintaining the opened state of the floating prevention arm A (hereinafter, referred to as an arm-opening maintenance guide frame). The rear girder 15 closer to 12B is linearly connected back and forth to form a connection. Reference numeral 20 denotes a frame for reinforcing the position of the guide frame 18 near the front end.

As described above, the unlocking guide frame 17, the arm opening / closing guide frame 18, and the arm opening maintaining guide frame 1
9 and the underframe is connected to the front and rear positions of the transport vehicle D to form an automatic opening and closing device for the arm A for preventing the floating of the seal belt S.

FIGS. 3 and 4 show the construction of a device for preventing the floating of the seal belt S comprising the arm A for preventing the floating of the seal belt S and a lock device L for locking the tip of the arm.
A description will be given based on FIGS. 5A and 5B and FIGS.

First, the structure of the base end portion of the floating prevention arm A which is laid so as to extend over the seal belt S and is pivotally supported will be described with reference to FIGS. 21
Is a fixing table installed on one shoulder eaves section 2 of the conveyor casing T, and a bearing 22 fixed at an upper inside position rotatably supports the base end of the floating prevention arm A. Specifically, at the base end of the anti-floating arm A, the barrel 23 of the anti-floating arm A, as shown in FIG. It is fixed at an angle of inclination of about 2 degrees diagonally, and accordingly, the rotating shaft 24 of the anti-floating arm A is penetrated and supported by the bearing 22 at an angle of inclination of about 2 degrees diagonally. That is,
The rotation shaft 24 of the levitation prevention arm A is slightly inclined by installing the fixed base 21 to which the bearing 22 is attached at an angle of about 2 degrees.

As a result, as shown in FIG. 3, when the levitation preventing arm A is turned at an angle of less than 90 degrees in a plan view, the distal end of the arm A is pushed slightly obliquely upward from the horizontal state. It is opened. In other words, by tilting the shaft cylinder 23 at the base end of the floating prevention arm A and the rotating shaft 24 that supports it at a slight angle θ, the distal end of the opened floating prevention arm A is pushed up obliquely upward. When the lift prevention arm A is opened and the lift prevention arm A is closed, the swing return is automatically performed by the potential energy.

Reference numeral 25 denotes a semi-arc cam plate which is fixedly mounted on a lower projecting shaft of the rotary shaft 24, and has an engagement recess 26 at the center of the semi-arc cam edge. Reference numeral 27 denotes a shaft cylinder fixed substantially horizontally at a lower position on the inner side of the fixed base 21, and a threaded portion which penetrates a rod 29 provided with a roller 28 which freely rotates horizontally at a tip end thereof, and protrudes to the rear end thereof. A nut 30 is screwed into the shaft cylinder 27 to support it, and a rod 29 is urged and supported by a coil spring 31 loaded in the shaft cylinder 27. Thereby, the roller 28 at the tip of the rod 29
The cam plate 25 is pressed and urged against the cam edge of the cam plate 25 that moves integrally with the floating prevention arm A. In particular, when the floating prevention arm A is closed, as shown in FIGS.
The roller 28 is dropped into the engaging concave portion 26 of FIG. 1 and is pressed and urged to cope with the steadying of the floating prevention arm A at the time of closing.

The lock device L of the floating prevention arm A is shown in FIG.
As shown in FIGS. 6A and 6B and FIGS. 6A and 6B, the shoulder eaves portion of the conveyor casing T at a position facing the tip of the floating prevention arm A closed across the seal belt S. 2 to support the tip of the floating prevention arm A so that it can be engaged and disengaged. Reference numeral 32 denotes a roller pivotally provided at the tip of the floating prevention arm A, and freely rotates horizontally.

Reference numeral 33 denotes a fixing base of the lock device L, and the unlocking guide frame 17 moves forward and backward along the upper surface plate portion 33A. A shelf 33B is formed in the middle part of the inside of the fixed base 33, and the shelf 13B and the upper surface 33A guide the tip of the floating prevention arm A in a swiveling manner or engage in a locked state. A U-shaped opening / closing passage 34 for maintaining the shape is formed.

Reference numeral 35 denotes a fitting groove cut out from the outside at the front and rear positions of the fixed base 33, and 36 denotes a pair of front and rear standing rods having a lower end pivotally mounted on a bearing 33C protruded at a lower position of the fixed base 33. A roller 37 that freely rotates horizontally is pivotally provided at the upper end. Numeral 38 denotes a partition plate to be fitted in the fitting groove 35, which is vertically fixed at a position inside the standing rod 36. Numeral 39 denotes a weight for maintaining the upright position by urging the upright rod 36 inward, and is attached to the lower side of the partition plate 38 below the shelf 33B. Reference numeral 40 denotes a guide piece obliquely provided on one side of the upper part of the partition plate 38, which is located at the front position in the case of the front partition plate 38 and at the rear position in the case of the rear partition plate 38, respectively. It is inclined. In the above case, a coil spring (not shown) may be suspended between the partition plate 38 and the fixing base 33 instead of the weight 39, so that the upright rod 36 can be biased and supported inward. .

When the coal unloading machine is driven to start coal unloading work from the coal transport ship berthed on the pier, the un coaled coal is transferred from the charging chute of the carrier D to the belt conveyor B. Supplied and transported. Thereafter, when the coal unloading machine advances and retreats between the bow and stern of the coal transport ship, and the transport trolley D moves forward, for example, to the right in FIGS. The underframe F connected to the front and rear positions of D starts to move forward integrally.

Therefore, the lifting prevention arm A laid over the seal belt S is pivotally opened by the unlocking guide arm 17 and the arm opening / closing guide frame 18 formed on the front frame F on the right side. I do. The rear girder 15 of the front frame F and the rear girder 1 of the left rear frame F
5, the floating prevention arm A is kept in the open state. The unlocking guide frame 17 and the arm opening / closing guide frame 18, which are formed substantially symmetrically in the front and rear underframe F on the left side, close the opened anti-floating arm A in the return direction to close it. I do.

More specifically, the distal end portion 17A of the unlocking guide frame 17 provided on the front frame F is
The lock device L reaches the upper surface plate portion 33A of the fixed base 33 first. Then, the front end portion 17A of the guide frame 17 is moved to the upper end roller 37 of the upright rod 36 on the near side.
The upright rod 36 is pushed outward through the rollers 37 as the vehicle further advances, and the push-down operation is performed.

As a result, the upright rod 36 and the partition plate 38 are inclined obliquely outwardly at an angle of about 30 degrees against the urging force of the weight 39, and are then spaced apart back and forth. The next standing rod 36 to be tilted is similarly tilted down. With this, a pair of front and rear partition plates 3
8, the anti-floating arm A, the tip of which is kept engaged
Is released.

That is, the tip of the levitation prevention arm A facing between the pair of front and rear partition plates 38 is unlocked by tilting the upper end of the upright rod 36 obliquely outwardly to release the lock. Rear end 17B of guide frame 17
Is maintained in the unlocked state over the stroke until reaching. Then, the rear end portion 17 of the guide frame 17
At B, near the guide roller 7 on the front side of the transport vehicle D, the tilting of the upright rod 36 is temporarily released, and the guide roller 7 between the front side and the rear side of the transport vehicle D automatically stands up. Return.

Of course, similarly to the case of the arm opening maintaining guide frame 19, if the guide frame 17 is formed in a straight line by connecting the front frame F and the rear frame F, the lock device L between them is formed. Are all kept in the unlocked state.

Next, the arm opening / closing guide frame 18
Of the floating prevention arm A is unlocked.
The tip of the arm A is pushed in by pushing the arm tip in accordance with the further forward movement of the carrier D, thereby turning the tip of the floating prevention arm A slightly obliquely upward. Then, when the leading end roller 32 of the floating prevention arm A reaches the base end portion 18B of the arm opening / closing guide frame 18, the floating prevention arm A is opened by being spread over an angle of about 90 degrees or less. I do.

The roller 3 at the end of the lift-off prevention arm A that has been opened
2 rolls from the front end to the rear end of the guide frame 19 for maintaining the opening of the arm by the further movement of the transport vehicle D, that is, the front and rear sides shown in FIG. Between the rear girder 15 of the underframe F, the rolling guide is performed while continuously maintaining the arm open state.

As a result, the carrier D moves continuously while the front seal belt S is continuously wound by the belt winding device and is rewound at the rear. as a result,
Openings 9 are continuously formed in a part of the seal belt S,
The coal X is fed into the belt conveyor B from the charging chute 6 of the transport vehicle D facing the opening 9 and transported.

The carriage D moves further forward and reaches the rear side, and the rear end portion 17B of the unlocking guide frame 17 on the front side is once again attached to the upright rod 36 of the unlocked locking device L and rearward. When the rear end portion 17B of the lock release guide frame 17 on the side abuts, the lock release guide frame 17 moves forward while maintaining the unlocked state.

On the other hand, the guide frame 1 for maintaining the arm open
9, the front end roller 32 of the anti-floating arm A, which is maintained in the open state, eventually becomes the rear girder 1 of the rear frame F on the left side.
5, the rear end 1 of the arm opening / closing guide frame 17
7B, the leading end roller 32 of the floating prevention arm A moves to the guide frame 17 side, and is rolled and guided along the arm opening / closing guide frame 17, thereby turning the floating prevention arm A in the closing direction. Rotate while returning.

The arm opening / closing guide frame 17
From the front end portion 17A to the front end roller 32 of the floating prevention arm A
Is separated, the tip roller 32 faces the opening / closing passage 34 of the lock device L, and the rotation shaft 24 and the cam plate 25 at the base end of the floating prevention arm A rotate integrally in the return direction. , In the engagement concave portion 26 of the cam plate 25,
When the roller 28 at the distal end of the rod 29 is urged and engaged in a pressed state, the base end of the closed levitation prevention arm A is supported to be steady.

As a result, the roller 32 at the tip end of the floating prevention arm A is moved between the front and rear partition plates 38 in the unlocked state.
At the stage where the restraint by the distal end portion 17A of the unlocking guide frame 17 is subsequently released, the pair of front and rear upright rods 36 rises vertically, whereby the front end portion of the arm moves forward and backward. It is locked by being held between the partition plates 38. Therefore, the transport vehicle D
On the rear side of, the anti-floating arm A is laid over the seal belt S orthogonally and locked again.

A guide piece 40 is obliquely provided on the partition plate 38 of the lock device L in order to achieve fail-safe when the arm is closed by the automatic opening / closing device for the floating prevention arm and to automatically close the arm. . Therefore, when the distal end of the floating prevention arm A is closed, the roller 32 at the distal end of the arm 32 rolls by hitting the guide piece 40, thereby pushing down the standing rod 39 via the partition plate 38, and thereby any one of the front and rear ends is used. The locked state of the one partition plate 38 is released, and the leading end of the arm is engaged and held between the partition plates 38.

[0049]

[Modification] In the above case, the opened floating prevention arm A is
Although it is configured to automatically turn and return in the closing direction by the potential energy, in the case of a modified example of the device for preventing the floating of the seal belt S shown in FIG. By vertically stacking a plurality of leaf springs 41 with the table 21, the floating prevention arm A can be turned freely and can be biased and supported to be able to return.

In the case of the variation of the floating prevention device shown in FIG. 8, the shaft cylinder 23 at the base end of the arm pivotably mounted is provided.
And a pair of front and rear coil springs 42 are suspended between the front and rear positions of the fixed base 21 so that the anti-floating arm A opened against the pulling force of one of the coil springs 42 is moved by the urging force. Return to turning. Alternatively, though not shown, a coil spring may be wound around a shaft cylinder or a rotating shaft at the base end portion of the floating prevention arm, so that an elastic biasing force for returning to the floating prevention arm at the time of closing may be applied.

Further, in the case of the modification shown in FIG. 9, the weight 43 is hung at a position near the base end of the lifting prevention arm A, and the lifting prevention arm A is pivoted in the opening direction, whereby the weight is lifted. At the time of return, the weight 43 descends, so that the levitation preventing arm A returns to turning.

In the above case, the anti-floating arm A
The lock device L, which is installed opposite to the distal end portion, is unlocked by being pushed down outward by a rising rod 36 for urging in the rising direction and a partition plate 38 or the like, and is held between the front and rear partition plates 38. Thus, the locking device L is formed so as to be locked. Alternatively, a locking device L as shown in FIGS. 10A and 10B may be used.

In the same figure, reference numeral 44 denotes a fixing base of the lock device L, which is fixed to a shaft cylinder 45 at a central portion on the outer side thereof, and which has a roller 46 at the upper end thereof. The rod 47 is urged up and down by a coil spring 48 loaded in the barrel 45. Reference numeral 49 denotes an elevating frame formed so as to protrude upward in a U-shape. Lock pins 50 formed at both front and rear ends of the elevating frame at intervals are formed so as to be able to protrude upward from a shelf 44B located inside the fixing base 44. And
The middle part of the lifting frame 49 and the lower end of the lifting rod 47 are fixed by a bottom connecting arm 51.

Thus, the movement of the carriage D causes the frame F
End portion 17 of unlocking guide frame 17 provided at
A is a roller 46 of the lifting rod 47 of the lock device L.
Is pressed down, the lock pins 50 at the front and rear positions of the elevating frame 49 are simultaneously pressed down, whereby the locked state of the distal end of the floating prevention arm A is released. Next, the front end portion 18A of the arm opening / closing guide frame 18 abuts on the side surface from the front end of the floating prevention arm A to move forward, thereby turning the floating prevention arm A to open. Subsequent operations are the same as those in the above case, and a description thereof will be omitted.

In the lock device L of such an embodiment, the unlocking guide frame 17 faces the roller 46 on the upper part of the elevating rod 47 and is pushed down, and the elevating frame 49 is operated.
The lock pin 50 at the front and rear positions is configured to be freely retractable, so that the distal end of the floating prevention arm A is unlocked, or the push-down operation by the guide frame 17 is released, so that the lock pin 50 is projected. Thus, the tip of the floating prevention arm A can be locked between the lock pins 50.

[0056]

According to the present invention, an automatic opening / closing device and a locking device for the seal belt floating prevention arm configured as described above, and a seal belt floating prevention device are provided. Since the levitation prevention arm laid across the moving range is automatically opened, it is possible to contribute to labor saving and rationalization of the arm opening / closing operation, and it is possible to perform coal mining operation without being affected by the weather.

In particular, the levitation-preventing arm within the range of the undercarriage projecting to the front and rear positions thereof with respect to the carrier trolley is automatically opened,
For the other front and rear seat belts, the floating prevention arm maintains the locked state in which it is straddled to prevent the seal belt from floating due to wind pressure, etc.
Contributes to preventing the scattering of coal during transportation.

At this time, since the underframe constituted by the frame has a structure in which it is guided and moved by the guide rails together with the forward and backward movement of the transport vehicle, in addition to the above-described effects, it extends over the front and rear positions of the transport vehicle. Compared to the case where the underframe has a lifting structure, the leading end does not swing laterally due to wind pressure or the like, enables stable advance / retreat traveling, and can reliably and smoothly open and close the floating prevention arm. .

Further, a locking device for fixing the anti-floating arm to the shoulder eaves of the belt conveyor device, a fitting groove cut out from the front and rear of the fixing device from outside, and a lower position of the fixing device. A pair of front and rear upright rods pivotally provided at the lower end thereof, a partition plate fixed vertically to an inner portion of the upright rod, and fitted in the fitting groove, and means for urging the upright rod in the upright direction. Since it consists of
As a result, the engagement and disengagement of the tip of the floating prevention arm is
It is performed reliably and smoothly.

Further, by attaching the shaft cylinder at the base end of the floating prevention arm and its rotation axis at a slight angle to the floating prevention arm closed in a substantially horizontal state, the tip of the floating prevention arm can be formed. Is lifted slightly upward and inclined to open, and the pushed-up floating prevention arm is urged to automatically return to the arm closing direction by its potential energy. For this reason, even if the floating prevention arm of the present invention is manually opened in the same manner as in the related art, and the tip of the arm is fastened with a pin or the like, the fastening pin may be removed. The arm is automatically turned back from the open side on the high side to the locking device on the low side to be locked.

Further, the fixed base at the base end of the floating prevention arm is fixed to the shoulder eaves of the conveyor casing, and the bearing of the fixed base closes the shaft cylinder of the floating prevention arm and its rotating shaft in a substantially horizontal state. The cam plate having an engagement recess is pivotally mounted on the rotation shaft, and a roller is pivotally mounted at the tip at a position facing the cam plate. By disposing a rod that is biased and supported, the roller at the tip of the rod is pressed and urged against the engaging concave portion of the cam plate, thereby effectively supporting the anti-floating arm against wind pressure and the like. And other effects.

[Brief description of the drawings]

FIG. 1 is a view showing an automatic opening / closing device for a floating prevention arm for a seal belt formed in a frame at a front-rear position of a transport trolley, wherein FIG. 1 (A) is a plan view and FIG. 1 (B) is a side view. .

FIG. 2 is a front view of the same.

FIG. 3 is a plan view showing a device for preventing floating of a seal belt.

FIGS. 4A and 4B are diagrams showing main parts of the levitation preventing device, wherein FIG. 4A is a plan view and FIG. 4B is a longitudinal sectional view.

FIG. 5 is a perspective view showing a base end of the floating prevention arm.

FIG. 6 is a perspective view showing a lock device of the floating prevention arm, in which FIG. 6A shows a locked state viewed from the inside,
FIG. (B) shows a state viewed from the outside.

FIG. 7 is a perspective view showing a modification in which the base end of the floating prevention arm has a leaf spring structure.

FIG. 8 is a perspective view showing a modification in which the base end of the floating prevention arm has a tension spring structure.

FIG. 9 is a perspective view showing a modification in which the base end of the floating prevention arm has a weight structure.

FIG. 10 is a view showing a modification in which the lock device opposed to the distal end portion of the floating prevention arm has a lock pin structure which is urged up and down so as to be freely retractable, and FIG. A perspective view in a locked state, and FIG. (B) is a longitudinal sectional view thereof.

11A and 11B are diagrams showing a conventional manual opening and closing device for a seal belt, wherein FIG. 11A is a plan view showing a state where the device is laid over a conveyor casing, and FIG. FIG.

FIG. 12 is a diagram illustrating a configuration in which a part of a seal belt is wound up by a belt hoisting device formed on a conveyor trolley so as to supply coal to the belt conveyor from the input chute of the conveyor trolley; It is a side view which shows the state which formed.

[Explanation of symbols]

 B: Belt conveyor S: Seal belt T: Conveyor casing D: Conveyor truck R: Guide rail X: Coal F: Underframe J: Connection joint A: Floating prevention arm L: Lock device 1: Side wall 2: Shoulder eaves 3 : Opening 4: Lifting prevention arm (manual type) 5: Pin 6: Input chute 7: Guide roller (belt winding device) 8: Auxiliary roller 9: Opening 10: Wheel 11: Skirt 12A, 12B: Left and right sides Beam 13: Leading girder 14: Intermediate girder 15: Rear girder 16: Wheel 17: Guide frame for unlocking 17A: Tip 17B: Rear end 18: Guide frame for opening and closing arm 18A: Tip 18B: Base end 19: Arm opening maintaining guide frame 20: Reinforcement frame 21, 33, 44: Fixed base 22: Bearing 23, 27, 45: Shaft tube 24: Rotating shaft 2 : Cam plate 26: Engagement recess 28, 32, 37, 46: Roller 29: Rod 30: Nut 31, 42, 48: Coil spring 33 </ b> A: Upper plate 33 </ b> B: Shelf 33 </ b> C: Bearing 34: Opening / closing passage 35: Fitting groove 36: Standing rod 38: Partition plate 39, 43: Weight 40: Guide piece 41: Leaf spring 47: Lifting rod 49: Lifting frame 50: Lock pin 51: Connecting arm

Claims (10)

[Claims] 1. A frame F formed of a frame is connected to the front and rear positions of a transport vehicle D, and a lock release guide frame 17 for releasing a lock device L of a floating prevention arm A of a seal belt S is connected to the frame F. An arm opening and closing guide frame 18 for opening and closing the unlocked floating prevention arm A;
An automatic opening / closing device for an anti-floating arm for a seal belt, comprising a guide frame 19 for maintaining an open state of an opened anti-floating arm A. 2. A transport vehicle D is mounted on a frame F composed of frames.
A wheel 16 that rolls along the guide rail R is provided. On one side of the underframe F, a guide frame 17 for unlocking the floating prevention arm A is substantially parallel to the guide rail R, and a locking device L On the line connecting the front and rear,
On the other side of the base frame F, an arm opening maintaining guide frame 19 is provided on the other side of the carrier D on the line connecting the position near the base end of the levitation prevention arm A back and forth. The arm opening / closing guide frame 18 is provided obliquely in plan view from one side to the other side, and the distal end portion 18A of the arm opening / closing guide frame 18 is positioned closer to the distal end portion 17A of the unlocking guide frame 17. 2. The automatic opening / closing device for a floating prevention arm for a seal belt according to claim 1, wherein the base end portion 18B is formed so as to be continuous with front and rear ends of the arm opening maintaining guide frame 19. 3. A fixing base 33 for fixing the locking device L of the anti-floating arm A according to claim 1 or 2 to the shoulder eaves 2 of the conveyor casing T, and an outer side at the front and rear positions of the fixing base 33. A pair of upright rods 36 having a lower end pivotally provided at a lower position of the fixed base 33; and a vertically fixed inside portion of the upright rod 36, Partition plate 38 fitted into 35
Means 39 for urging the erecting rod 36 in the erecting direction.
Automatic opening / closing device for the anti-floating arm for the seal belt. 4. The anti-floating arm A in which the shaft cylinder 23 and the rotation shaft 24 at the base end of the anti-floating arm A according to claim 1, 2, or 3 are closed in a substantially horizontal state. On the other hand, it is attached at a slight angle θ, and the tip of the anti-floating arm A is opened by pushing up the tip slightly diagonally upward, and the lifted anti-floating arm A is moved in the arm closing direction by the potential energy. Automatic opening / closing device of the anti-floating arm for the seal belt that automatically returns to 5. An apparatus for preventing floating of a seal belt, wherein a floating prevention arm A of the seal belt S is laid over the seal belt S in a direction orthogonal to the seal belt S, and the floating prevention arm A is pivotably supported. A device for preventing the floating of a seal belt, wherein a lock device L is provided at a position facing the distal end of the floating prevention arm A so that the distal end of the arm can be freely engaged and disengaged. 6. A fixing base 33 which fixes the locking device L according to claim 5 to the shoulder eaves portion 2 of the conveyor casing T.
A fitting groove 35 cut out from the outside at the front and rear positions of the fixed base 33; a pair of front and rear standing rods 36 having a lower end pivoted at a lower position of the fixed base 33; A partition belt 38 fixed in the vertical direction and fitted in the fitting groove 35, and a means 39 for urging the rising rod 36 in the rising direction. 7. A seal belt floating prevention device comprising a seal belt S, a floating prevention arm A of the seal belt S straddling in a direction perpendicular to the seal belt S, and supporting the floating prevention arm A in a rotatable manner. A fixed base 21 at the base end of the floating prevention arm A is fixed to the shoulder eaves section 2 of the conveyor casing T, and a shaft cylinder 23 of the floating prevention arm A and its rotating shaft 24 are substantially mounted on a bearing 22 of the fixed base 21. Attachment is made at a slight angle θ with respect to the levitation prevention arm A closed in a horizontal state. A cam plate 25 having an engagement recess 26 is axially mounted on the rotation shaft 24, and the cam plate 25 faces the cam plate 25. In the position, the rod 2 is biased by pivoting a roller 28 at the tip.
9. A seal belt floating prevention device in which a roller 9 at the tip end of the rod 29 is pressed and urged against the engaging concave portion 26 of the cam plate 25, thereby supporting the floating prevention arm A in steady rest. 8. A seal belt surfacing prevention device comprising: a splay prevention arm A for a seal belt S, which is provided on an upper part of the seal belt S in a direction orthogonal to the seal belt S, and which supports the slewing prevention arm A in a freely rotatable manner. A lock device L is provided at a position facing the distal end of the floating prevention arm A so that the distal end of the arm can be freely engaged and disengaged, and the lock device L is fixed to the shoulder eaves 2 of the conveyor casing T. Stand 33
A fitting groove 35 cut out from the outside at the front and rear positions of the fixed base 33; a pair of front and rear standing rods 36 having a lower end pivoted at a lower position of the fixed base 33; A partition plate 38 fixed in the vertical direction to be fitted in the fitting groove 35, a guide piece 40 inclined at an upper portion of the partition plate 38, and a weight 39 attached to a lower portion of the partition plate 38. By tilting the upper end of the upright rod 36 outwardly, the anti-floating arm A with its front end facing between the pair of front and rear partition plates 38 can be unlocked, or the anti-floating arm A can be unlocked. A lock device for a floating prevention arm for a seal belt, characterized in that the end portion of the arm is held between a pair of front and rear partition plates 38 so as to be locked. 9. The base of the levitation prevention arm A is fixed to the fixing base 21.
A cam plate 25 having an engagement recess 26 is axially mounted on the rotating shaft 24, and a rod 29, which is biased and supported by pivoting a roller 28 at the tip end, is provided at a position facing the cam plate 25. The engaging recess 26 of the cam plate 25
The anti-sway device of the anti-swing arm for a seal belt, which urges the roller 28 at the end of the rod 29 to sway and support the anti-swing arm A. 10. A shaft cylinder 23 at a base end of a floating prevention arm A.
And the rotating shaft 24 is tilted at a slight angle θ with respect to the levitation prevention arm A closed in a substantially horizontal state, so that the tip of the levitation prevention arm A is pushed up slightly obliquely upward and opened. An automatic return device for a seal belt anti-floating arm, wherein the anti-floating arm A returns in the arm closing direction by its potential energy.