HK1145081B - Passenger conveying apparatus - Google Patents

Description

Passenger conveying equipment

Technical Field

The present invention relates to a passenger conveyor such as an escalator or a motor tunnel, and more particularly, to a passenger conveyor having a unique design in terms of the structure of a frame.

Background

As a conventional technique, for example, patent document 1 discloses a technique in which, in order to achieve weight reduction of a frame body of a passenger conveyor, to reduce welding work and to improve productivity, an edge portion of a steel plate is bent, and a side frame body is configured by an upper side portion configuring an upper chord portion, a lower side portion configuring a lower chord portion, a side portion located between the upper side portion and the lower side portion, and longitudinal members provided at a plurality of portions of the side portion along a longitudinal direction of the frame body from the upper side portion to the lower side portion by spot welding, and the side frame body is configured by providing the side frame body in a left-right separated manner and connecting the side frame body by a cross member.

Patent document 1: japanese Kokoku publication Sho 58-42373

In the housing disclosed in patent document 1, since the plurality of vertical members are spot-welded over the entire length direction, thermal deformation occurs in the welded portion including the vertical members under the influence of the welding heat. Therefore, in a general passenger conveyor in which both the balustrade and the guide rail for step traveling are attached to the longitudinal member, when the balustrade, the guide rail, and the like are attached to the longitudinal member deformed by thermal deformation, the attachment positions of the balustrade and the guide rail must be repaired by manual work, which leads to a decrease in productivity.

Further, when the old passenger conveyor is modified to a new passenger conveyor, since the vertical member of the old passenger conveyor is fixed to the steel plate by spot welding, it is necessary to cut the old passenger conveyor by gas cutting or the like when the old passenger conveyor is disassembled and removed, and thus, there is a problem that it takes a lot of time to disassemble the passenger conveyor.

Disclosure of Invention

The invention aims to provide a passenger conveying device, which not only can realize the light weight of a frame body and improve the productivity of the frame body, but also can conveniently disassemble the frame body.

In order to achieve the above object, the present invention provides a passenger conveyor in which a peripheral edge of a steel plate is bent so as to have an L-shaped cross section, a plurality of side frame units having an upper side serving as an upper chord portion, a lower side serving as a lower chord portion, a connecting side serving as a connecting portion, and a side surface surrounded by these sides are formed, the connecting sides of adjacent side frame units are connected to each other by a connecting member, and a longitudinal member connected to the upper side, the lower side, and the side surface of the steel plate is provided, thereby forming left and right side frames, and the longitudinal member of the left and right side frames is connected by a cross member.

As described above, the frame body is configured by bending the steel plate to form the respective members and connecting the respective members by the connecting members, and this method not only can achieve weight reduction as compared with the case of configuring the frame body by using the sectional material, but also does not require spot welding and does not cause thermal deformation of the respective members due to welding heat, so that repair of the mounting positions of the respective members is not required, and productivity can be improved accordingly.

Further, since the connection is performed by the bolt and the nut, the disassembling operation of the housing becomes very convenient when the passenger conveyor is rebuilt, and therefore, it is not necessary to spend a lot of time for the disassembling operation.

Effects of the invention

According to the present invention described above, it is possible to obtain a passenger conveyor that can not only reduce the weight of the housing and improve the productivity of the housing, but also facilitate the disassembling operation of the housing.

Drawings

Fig. 1 is a schematic side view of an escalator showing an embodiment of a passenger conveyor of the present invention.

Fig. 2 is an enlarged longitudinal sectional view taken along line a-a of fig. 1.

Fig. 3 is an enlarged longitudinal sectional view of a left half portion along line B-B of fig. 1.

Fig. 4 is a side view taken along line C-C of fig. 2.

Fig. 5 is an enlarged transverse sectional view with a portion thereof omitted taken along line D-D of fig. 4.

Description of the symbols

1 escalator

2 upper storey

3 lower floor

4 frame body

4A Upper frame

4B middle frame

4C lower frame

5A upper entrance floor

5B lower part access floor

6 step chain

7 step

7W running wheel

8 drive device

9 balustrade panel

10 moving handrail

11A, 11B side frame

11a upper side

11b lower edge

11c connecting edge

11d side surface

12A, 12B beam

13. 13A connecting member

13a upper connecting part

13b attachment site

13c side part

13d lower connection part

13H positioning hole

14 positioning pin

15 guide rail bracket

15a upper fixing part

15b lower fixing part

15c side fixing part

15d component mounting site

15A-15D mounting base

16 go-way side guide rail

17A, 17B return side guide rail

18 skirt guard

19A, 19B, 20A, 20B holes

21. 22 bevel portion

B bolt

OP oil storage plate

Q1, Q2, P1 and P2 bending point parts

Detailed Description

An embodiment of a passenger conveyor according to the present invention will be described below with reference to an escalator shown in fig. 1 to 5 as an example.

The escalator 1 includes: a frame 4 installed on the building so as to straddle the upper floor 2 and the lower floor 3; an upper doorway floor 5A and a lower doorway floor 5B that cover, from above, machine rooms provided at both longitudinal ends of the frame 4; a step 7 that is provided in the frame 4 between the upper doorway floor 5A and the lower doorway floor 5B, and that is connected in a loop by a step chain 6 and that moves cyclically; a drive device 8 that drives the step chain 6; a balustrade panel 9 which is provided on the frame 4 so as to be opposed to both sides of the steps 7 in the moving direction and is erected; a moving handrail 10, which is disposed along the periphery of the balustrade panel 9 and is driven in synchronism with the steps 7.

The running wheels 7W of the steps 7 are pivotally supported, and the steps 7 are guided by a guide rail, which will be described later, provided in the frame 4, so that the steps on which passengers stand are moved in a state where they are always kept horizontal on the outward route side.

The frame 4 includes left and right side frames 11A and 11B and a plurality of cross members 12A and 12B connecting the left and right side frames 11A and 11B. In the present embodiment, the frame 4 is divided into an upper frame 4A, an intermediate frame 4B, and a lower frame 4C, and these frames are connected by the connection portions C1 and C2, respectively. In order to form an inclination angle of approximately 30 degrees, bending point portions Q1 and P1 for inclining downward are formed in the upper frame 4A, and bending point portions Q2 and P2 for inclining upward are formed in the lower frame 4C.

The side frames 11A, 11B constituting the frame 4 are formed of a steel plate, and are formed in units of the upper frame 4A, the intermediate frame 4B, and the lower frame 4C, respectively. Specifically, the periphery of the steel plate is bent in the same direction so that the cross section thereof has an L-shape, and a side frame unit having an upper side 11a serving as an upper chord portion, a lower side 11b serving as a lower chord portion, a connecting side 11c serving as a connecting portion, and a side surface 11d surrounded by these portions is formed. Since the side frames 11A and 11B have the same configuration, only the side frame 11B will be described.

As shown in fig. 4, the side frame unit formed by the above-described method has the connection member 13 mounted therein. Specifically, the connecting member 13 is provided inside the side frame unit surrounded by the upper side 11a and the connecting side 11c, and the connecting surface thereof is formed by an upper connecting portion 13a connected to the upper side 11a by a bolt, a connecting portion 13b connected to the connecting side 11c by a bolt, and a side portion 13c connected to the side 11d by a bolt. The connecting member 13 provided on the inner side of the side frame unit surrounded by the lower side 11b and the connecting side 11c has a lower connecting portion 13d connected to the lower side 11b by a bolt, a connecting portion 13b connected to the connecting side 11c by a bolt, and a side portion 13c connected to the side 11d by a bolt. The connecting members 13 are respectively connected to the side frame units by bolts, and thereafter, the side frame units formed in units of the upper frame 4A, the middle frame 4B, and the lower frame 4C are connected to each other.

In the connection operation, the adjacent connection sides 11C of the side frame units formed in units of the upper frame 4A, the middle frame 4B, and the lower frame 4C are brought into contact with each other, and in this state, the adjacent connection sides 11C in contact with each other are sandwiched by the connection members 13, and thereafter, the bolts B are inserted through the adjacent connection portions 13B in a state where the adjacent connection sides 11C are sandwiched, and are connected. In this case, in order to prevent the upper side 11A and the lower side 11B of the adjacent side frame units from being displaced in the vertical direction, the positioning holes 13H are provided in the two opposing connecting members 13 and the two adjacent connecting sides 11c, the positioning pins 14 are inserted into the positioning holes 13H, and then the side frame units are coupled by the bolts B, whereby the assembly accuracy of the side frame bodies 11A and 11B can be improved.

In the left and right side frames 11A and 11B having the above-described configuration, rail brackets 15 as vertical members are fixed to the side surface 11d, the upper side 11A, and the lower side 11B so as to be spanned by bolt fastening. The rail bracket 15 is also formed by bending a steel plate, and includes an upper fixing portion 15a that is fastened to the upper side 11a of the side frame unit by bolts, a lower fixing portion 15b that is fastened to the lower side 11b by bolts, and a side fixing portion 15c that is fastened to the side 11d by bolts. Further, the member mounting portion 15d protrudes toward the side frames 11A and 11B facing each other with respect to the side fixing portion 15c, and a mounting base for mounting and fixing each member is provided on the member mounting portion 15 d. Specifically, the mounting bases 15A for mounting the outbound guide rails 16 of the running wheels 7W that guide the steps 7, the mounting bases 15B and 15C for mounting the return-side guide rails 17A and 17B that guide the running wheels 7W, and the mounting base 15D for fixing the skirt guard 18 are provided.

Further, the cross beam 12A is connected to the middle portion in the height direction of the left and right rail brackets 15, that is, the position facing the movement locus of the step 7 on the forward side and the step 7 on the backward side, by bolts, and the cross beam 12B is connected to the lower end portion of the rail brackets 15 by bolts, whereby the left and right side surface frames 11A, 11B can be prevented from falling down, and the rigidity of the frame 4 can be ensured.

A plurality of the cross members 12A and 12B are provided along the longitudinal direction of the frame 4, the oil pan OP is attached to the cross member 12B located at the lower portion, and the left and right portions thereof are fixed by being fastened to the lower end portions of the rail brackets 15 by bolts.

According to the present embodiment as described above, the side frames 11A and 11B as the constituent members of the frame 4 are not formed by using the shape material, but the side frame units are formed by bending a steel plate, and the side frame units are connected in the longitudinal direction to form the side frames 11A and 11B, so that the frame 4 can be reduced in weight.

Since the connection of the side frame units and the connection of the respective members are performed by bolt fastening, for example, the rail brackets 15 and the side frames 11A and 11B are not deformed by any welding heat, and therefore, only minimal adjustment is required for adjusting the positions of the respective mounting bases 15A to 15D, and the productivity of the frame 4 can be improved.

Further, when the escalator 1 needs to be disassembled by rebuilding, since there is no portion to be welded, it is only necessary to loosen and remove the fixing bolts, and the disassembling work of the frame 4 can be facilitated.

In the above description, a total of two types of connecting members 13 are used, one for connecting to the upper side 11a and the other for connecting to the lower side 11b of the side frame unit, but in order to reduce the number of components, a connecting member 13A shown by a two-dot chain line in fig. 4, that is, an integrated connecting member having a fixing surface connected to 4 surfaces of the upper side 11a, the lower side 11b, the connecting side 11c, and the side surface 11d at the same time may be used.

In the above description, the connection portions C1, C2, i.e., the dividing positions of the upper frame 4A, the intermediate frame 4B, and the lower frame 4C are provided at the downward inclined end portion of the upper frame 4A and the upward inclined end portion of the lower frame 4C, respectively, but as shown in fig. 1, the upper frame 4A may be divided at the bending point portions Q1, P1, and the lower frame 4C at the bending point portions Q2, P2. By dividing at the above-described position, the frame body can be divided into the upper horizontal section, the intermediate inclined section, and the lower horizontal section all of which are linear without the occurrence of the bent portion, whereby the manufacturing efficiency of the frame body 4, the transportation efficiency after the disassembly, and the like can be improved.

In the above description, although the weight reduction is achieved by the above configuration, if the weight reduction is further required, the side surface 11d of the side frame unit is provided with the triangular holes 19A, 19B, 20A, and 20B indicated by the two-dot chain lines in fig. 4, and thus the weight reduction can be further achieved. When the holes 19A, 19B, 20A, and 20B are opened, it is important to avoid the portion of the side surface 11d where the guide bracket 15 is provided in order to prevent the strength of the side surface frames 11A and 11B from being reduced. Further, by forming the long sides of the triangular holes 19A, 19B, 20A, 20B to face each other and forming the inclined surfaces 21, 22 on the side surface 11d in a truss shape, it is possible to prevent the rigidity of the side surface 11d from being lowered.

When the frame 4 is deformed by the welding heat and the mounting positions of the members are displaced, the installation positions of the outward path side rail 16 and the return path side rails 17A and 17B are most likely to be displaced by the influence of the welding heat. When the installation positions of the outbound side guide rail 16 and the return side guide rails 17A and 17B are shifted, the steps 7 cannot be stably guided with high accuracy, and vibration and noise are generated in the steps during traveling. As shown in fig. 1, the section of the frame 4 in which the steps 7 must be stably guided with high accuracy is an inclined section between the bending point portions Q1 and P1 of the upper frame 4A and the bending point portions Q2 and P2 of the lower frame 4C. As long as the members are not deformed by the welding heat in this inclined section, the outward guide rail 16 and the return guide rails 17A and 17B can be accurately provided. On the other hand, since the drive device 8, the drive sprocket DS, and the like are provided in the horizontal section of the upper frame 4A of the frame 4 extending from the bending point portions Q1, P1 to the end portion side, and the driven sprocket FS is provided in the horizontal section of the lower frame 4C extending from the bending point portions Q2, P2 to the end portion side, the structure of the horizontal section is preferably a structure having high rigidity since the driven sprocket FS is driven by winding the step chain 6 around the sprocket.

In the frame 4 which is installed on a building so as to span an upper floor and a lower floor and has an upper horizontal section, an intermediate inclined section, and a lower horizontal section, the upper horizontal section and the lower horizontal section are assembled by using a profile and fastening with bolts to form a frame structure, and the side frame located in the intermediate inclined section of the frame is formed by a side frame unit formed of the steel plate, and the frame structure of the upper horizontal section and the lower horizontal section and the intermediate inclined section formed of the side frame unit are connected by fastening with bolts. According to the above structure, the intermediate inclined section is configured not to be deformed and a structure of light weight can be realized, while the upper horizontal section and the lower horizontal section are configured not to be deformed and a structure of high rigidity. In addition, when the story height of the building is high, it is preferable to divide the intermediate inclined section into a plurality of units in the longitudinal direction in consideration of manufacturing efficiency, transportation efficiency, and the like.

In the above configuration, the frame structures constituting the upper horizontal section and the lower horizontal section of the frame body 4 are configured to have the inclined portions having the same inclination as that of the intermediate inclined section, respectively, so that the shape of the steel plate constituting the side frame unit of the intermediate inclined section can be formed in a simple shape of a quadrangle, thereby providing an advantage of facilitating the bending of the steel plate.

In the above-described structure, the connection between the members constituting the framework structure in the upper horizontal section and the lower horizontal section, that is, the profiles, is performed by bolt fastening, but the connection may be performed by welding a part or all of the connection portions without using bolt fastening. This is because the profile of the skeletal structure has a larger heat capacity than the steel plate, and when the connection is made by welding, the thermal deformation of the member is small because there is only a slight thermal deformation as compared with the case of welding the steel plate.

However, in the case where the skeleton structure is configured by welding and connecting the profiles, it is necessary to cut the welded and connected portions when performing the disassembling work at the time of reconstruction. However, since only the upper horizontal section and the lower horizontal section are connected by welding and the intermediate inclined section is connected by fastening with a bolt, the troublesome cutting work can be controlled to the minimum by disassembling the housing 4 in units of each section, for example, in units of the upper horizontal section, the lower horizontal section, and the intermediate inclined section.

Industrial applicability

In the above description, the escalator was described as an example of the passenger conveyor, but the present invention can be applied to a motor tunnel installed on a flat floor, a motor tunnel installed on an inclined floor, and the like.

Claims (11)

1. A passenger conveyor apparatus having: a frame body provided on a building; a step which is guided in the frame body and is connected in a ring shape; railings which are vertically arranged on the frame body at corresponding positions at two sides of the moving direction of the stair; a moving handrail guided by a peripheral edge of the balustrade and driven in synchronization with the steps, the frame having left and right side frames and a plurality of cross members connecting the left and right side frames, the passenger conveyor being characterized in that,

the side frames are formed by bending the periphery of the steel plate so that the cross section thereof has an L-shape, forming a plurality of side frame units having an upper side serving as an upper chord section, a lower side serving as a lower chord section, a connecting side serving as a connecting section, and a side surface surrounded by these sides, connecting the connecting sides of the adjacent side frame units to each other by connecting members, and providing vertical members connected to the upper side, the lower side, and the side surface of the steel plate, thereby forming the side frames, and connecting the vertical members of the left and right side frames by the cross member.

2. A passenger conveyor apparatus having: a frame body which is provided in a building and has machine chambers formed at both ends in a longitudinal direction; a step which is guided in the frame body and is connected in a ring shape; railings which are vertically arranged on the frame body at corresponding positions at two sides of the moving direction of the stair; a moving handrail guided by a peripheral edge of the balustrade and driven in synchronization with the steps, the frame having left and right side frames and a plurality of cross members connecting the left and right side frames, the passenger conveyor being characterized in that,

the side frame body is configured such that a peripheral edge of a steel plate is bent so as to have an L-shaped cross section, a plurality of side frame units each having an upper side serving as an upper chord portion, a lower side serving as a lower chord portion, a connecting side serving as a connecting portion, and a side surface surrounded by the upper and lower sides are formed, the connecting sides of adjacent side frame units are connected to each other by a connecting member, and a vertical member connected to the upper side, the lower side, and the side surface of the steel plate is provided, whereby the side frame body located between machine chambers formed at both end portions in a longitudinal direction of the frame body is configured, and the vertical members of the left and right side frame bodies are connected by the cross member.

3. A passenger conveyor apparatus having: a frame body which is arranged across the upper and lower floors of the building and has an upper horizontal section, a middle inclined section and a lower horizontal section; a step which is guided in the frame body and is connected in a ring shape; railings which are vertically arranged on the frame body at corresponding positions at two sides of the moving direction of the stair; a moving handrail guided by a peripheral edge of the balustrade and driven in synchronization with the steps, the frame having left and right side frames and a plurality of cross members connecting the left and right side frames, the passenger conveyor being characterized in that,

the side frame unit is provided with vertical members connected to the upper side, the lower side and the side faces of the side frame unit, thereby forming a side frame body positioned in an intermediate inclined section of the frame body, and the connecting sides of the side frame unit are connected to the side frame body positioned in an adjacent upper horizontal section and a lower horizontal section by connecting members, and the vertical members of the left and right side frame bodies are connected by the cross beam.

4. A passenger conveyor apparatus having: a frame body which is arranged across the upper and lower floors of the building and has an upper horizontal section, a middle inclined section and a lower horizontal section; a step which is guided in the frame body and is connected in a ring shape; railings which are vertically arranged on the frame body at corresponding positions at two sides of the moving direction of the stair; a moving handrail guided by a peripheral edge of the balustrade and driven in synchronization with the steps, the frame having left and right side frames and a plurality of cross members connecting the left and right side frames, the passenger conveyor being characterized in that,

the side frame body located in the middle inclined section of the frame body is configured by forming an upper horizontal section and a lower horizontal section of the frame body by a framework structure composed of sectional materials, bending the periphery of a steel plate in a manner that the cross section is in an L shape, forming a side frame unit having an upper side serving as an upper chord part, a lower side serving as a lower chord part, a connecting side serving as a connecting part, and a side surface surrounded by the sides, and providing a longitudinal member connected to the upper side, the lower side, and the side surface of the side frame unit, and connecting the connecting side of the side frame unit to the side frame body located in the adjacent upper horizontal section and lower horizontal section by a connecting member, and connecting the longitudinal members of the left and right side frame bodies by the cross beam.

5. The passenger conveyor of claim 3 or 4,

the upper horizontal section and the lower horizontal section of the frame body have inclined portions having the same inclination as the intermediate inclined section, respectively.

6. The passenger conveyor of claim 3 or 4,

the intermediate inclined section of the frame is divided into a plurality of units in the longitudinal direction.

7. The passenger conveyor of claim 1, 2, 3, or 4,

the connecting member has an upper connecting member having a connecting surface connected to the 3 sides of the upper side and the connecting side of the side frame unit and the side surface, and a lower connecting member having a connecting surface connected to the 3 sides of the lower side and the connecting side of the side frame unit and the side surface.

8. The passenger conveyor of claim 1, 2, 3, or 4,

the connecting member has connecting surfaces connected to 4 surfaces of the upper side, the connecting side, the lower side and the side surfaces of the side frame unit.

9. The passenger conveyor of claim 1, 2, 3, or 4,

a plurality of holes are formed at the side of the side frame unit.

10. The passenger conveyor of claim 9,

the holes are arranged in a triangular shape, thereby forming a truss shape having a longitudinal face portion and an inclined face portion between the upper chord portion and the lower chord portion.

11. The passenger conveyor of claim 9,

the plurality of holes are formed at positions separated from the longitudinal members and the connection members.