JP6610353B2 - Carriage for truss segment used for renewal method of passenger conveyor - Google Patents

Description

  The present invention relates to a carriage for a truss segment used in a method for renewing a passenger conveyor such as an escalator.

  In the escalator, a renewal construction method has been proposed in which a new truss is installed in the internal space of the existing truss without removing the existing truss, and the new truss is combined with the existing truss (Patent Document 1). According to this renewal method, it is possible to greatly shorten the renewal period of the escalator.

  In the renewal method of Patent Document 1, parts and equipment (driving device, step, handrail drive mechanism, control equipment, etc.) other than the existing truss are removed, and only the existing truss is left. And a gate type lifting device is installed in the upper floor side horizontal part and lower floor side horizontal part of an existing truss, respectively.

  The new truss is divided into a plurality of truss segments. At the left and right sides of the truss segment, attach a sled member that can slide on the top surface of the existing truss, load the truss segment from the lower-floor type portal lifting device, slide the sled member on the top surface of the existing truss, It is transported to a predetermined position on the floor side.

JP-A-2015-809

  The portal lifting device must be configured to have almost the same width as the existing truss because of the installation space. On the other hand, the truss segment of the new truss has a width that has almost no margin with respect to the internal space of the existing truss. For this reason, if a sled member is attached to the right and left of a truss segment, it cannot pass through a portal type lifting device.

  Accordingly, the portal lifting device is provided with a recess in a part of its vertical frame to form a space through which the sled member can pass, but this is not preferable from the viewpoint of strength.

  Therefore, it is desired that the truss segment of the new truss can be transported into the existing truss without using a sled member.

  An object of the present invention is to provide a transport carriage used in a renewal method of a passenger conveyor device that can transport a truss segment of a new truss using a track rail of an existing truss and a step chain that travels on the track rail. is there.

Carriage used in the renewal method of passenger conveyor according to the present invention,
Renewal of the passenger conveyor, in which the new truss to be installed in the internal space of the existing truss is divided into a plurality of truss segments in the longitudinal direction and the truss segments are sequentially installed in the internal space of the existing truss Used in the construction method, the existing truss is a transport cart that transports the truss segment in a state where the existing carrier side track rail and the existing step chain running on the existing carrier side track rail are left,
A frame for loading the truss segments;
The frame includes
A first groove having an opening and fitting into an axle of the existing step chain;
A second groove having an opening, provided on the rear side of the first groove, and long before and after the rear axle of the existing step chain is fitted;
Is provided.

  It is desirable to provide a cover plate that closes the opening of the first groove and the second groove.

  It is desirable that the openings of the first groove and the second groove are opened downward.

  It is preferable that the frame is provided with stoppers that contact the outer plate or the inner plate of the existing step chain on the left and right sides.

  According to the carriage used for the renewal method of the passenger conveyor according to the present invention, the frame for loading the truss segment of the newly installed truss travels on the existing carrier-side track rail of the existing truss through the first groove and the second groove. By being fitted to the axle of the existing step chain, it can be engaged with the existing step chain. In this state, the truss segment can be moved to the upper floor side or the lower floor side by pulling up the whole frame or pulling it down.

  When the carriage is moved from the horizontal part of the existing truss to the inclined part or from the inclined part to the horizontal part, the locus of the existing step chain becomes a curved locus, and the axle interval in which the first groove and the second groove are fitted changes. . However, the transport cart of the present invention can follow the change in the axle distance because the axle can move back and forth in the second groove that is long in the front and back.

  Moreover, after passing an axle shaft through a 1st groove | channel and a 2nd groove | channel, it can prevent that an axle shaft remove | deviates from a 1st groove | channel and a 2nd groove | channel by closing an opening with a cover plate.

  Furthermore, by providing a stopper projecting on the frame, when the frame swings to the left and right, the stopper can come into contact with the outer plate or the inner plate to suppress the swing.

  According to the transport carriage used in the renewal method of the passenger conveyor according to the present invention, the truss segment of the newly installed truss can be transported efficiently.

FIG. 1 is a perspective view of an existing truss in which a portal lifting device is installed in a renewal method according to an embodiment of the present invention. FIG. 2 is a perspective view of an existing step chain. FIG. 3 is a perspective view of a transport carriage equipped with a truss segment of a new truss. FIG. 4 is a perspective view of the first groove and the stopper. FIG. 5 is a perspective view of the second groove and the stopper. FIG. 6 is an enlarged view showing a state in which the first groove is fitted to the axle. 7 is a cross-sectional view taken along line 7-7 in FIG. FIG. 8 is an enlarged view showing a state in which the second groove is fitted to the axle. 9 is a cross-sectional view taken along line 9-9 in FIG. FIG. 10 is a side view of a partial frame of the transport cart and the existing step chain showing a state where the transport cart is placed on the existing step chain. FIG. 11 is an enlarged view of the vicinity of the lower end of the rear frame in the state of FIG. FIG. 12 is a side view showing a state where the transport cart is pulled up to the upper floor side. FIG. 13 is a side view of the transport carriage that is in the process of moving from the inclined portion to the upper floor horizontal portion. FIG. 14 is an enlarged view of the vicinity of the lower end of the rear frame in the state of FIG.

  Hereinafter, it demonstrates concretely along drawing about the form which implemented this invention to the renewal construction method of an escalator as a passenger conveyor. In the following description, the direction from the lower floor to the upper floor along the longitudinal direction of the existing truss 10 is referred to as “front”, and the opposite direction is referred to as “rear”. Moreover, the truss segment 50 of a newly installed truss illustrates the construction method carried in from the lower floor side.

  The escalator renewal method which is one embodiment of the present invention is to install a new truss in the internal space of the existing truss without removing the existing truss 10. As shown in FIG. 1, the existing truss 10 includes an upper floor side horizontal portion 11, an inclined portion 12, and a lower floor side horizontal portion 13. In the renewal method, the existing truss 10 is installed on the inner side of the existing truss 10 and the existing truss 10. Other parts and devices (for example, driving devices, steps, handrail drive mechanisms, control devices, etc.), leaving the carrier-side track rail 15 for guiding the stepped roller on the riding surface and the existing step chain 20 Remove. In the illustrated embodiment, the existing truss 10 is provided with a floor material 17 below the carrier-side track rail 15 so that an operator can enter the existing truss 10.

  As shown in FIG. 1, gate-type lifting devices 30 and 40 are respectively installed on the lower floor side horizontal portion 13 and the upper floor side horizontal portion 11 of the existing truss 10.

  The portal lifting devices 30 and 40 are obtained by joining a plurality of vertical frames 31 and 41 and horizontal frames 32 and 42 by welding, bolting, or the like. Extending rails 33 and 43 are provided. On the rails 33 and 43, manual chain blocks 34 and 44 are respectively slidable forward and backward. The inner method of the vertical frames 31, 31 and the vertical frames 41, 41 may be more than the inner method of the existing truss 10. In the present invention, since the sled member protruding left and right as in Patent Document 1 is unnecessary, the vertical frames 31 and 41 can be formed in a columnar shape without a dent.

  As shown in FIG. 2, the existing step chain 20 may leave only a part and remove the others. The existing step chain 20 includes rollers 21 and 21 that roll on the carrier-side track rail 15, a plurality of outer plates 22 and inner plates 23 that connect the front and rear rollers 21 and 21, and the left and right rollers 21 and 21. Are included. In the illustrated embodiment, the existing step chain 20 leaves six axles 25 and removes the others.

  FIG. 3 is a perspective view showing an embodiment of a transport cart 60 on which a truss segment 50 of a new truss is mounted. The new truss is composed of a plurality of truss segments. Each truss segment can be mounted in advance with components and devices (a driving device, driving wheels, guide rails, etc.) that can be mounted in advance among a plurality of components and devices that should constitute the escalator. The illustrated truss segment 50 is a bent truss segment on the upper floor side.

  The truss segment 50 is placed on the transport cart 60. The transport cart 60 can be configured by joining a plurality of frames by welding, bolting, or the like. The outer width of the transport cart 60 is configured to be narrower than the inner method of the existing truss 10 including stoppers 78 and 88 described later, and with the truss segment 50 mounted, the portal lifting device 40 on the lower floor side is mounted. It is possible to enter the internal space of the existing truss 10 by passing between the vertical frames 41 and 41.

  The transport cart 60 can be composed of frames 62, 70, and 80 made of, for example, an angle member having an L-shaped side. The frames 62, 70, and 80 have a shape in which the truss segment 50 to be mounted is fixed with bolts or the like and is stable. The frames 62, 70, and 80 are preferably made of steel because the truss segment 50, which is a heavy object, is mounted. The shapes of the frames 62, 70, 80 are not limited to the L-shaped equilateral angle, but the L-shaped angle, the square steel pipe, the I-shaped steel, the H-shaped steel, the groove-shaped steel, the rod-shaped steel, the plate-shaped steel, etc., or a combination thereof You may comprise.

  More specifically, the transport cart 60 includes a pair of left and right front vertical frames (hereinafter referred to as “front frame 70”) and a pair of left and right rear vertical frames (hereinafter referred to as “rear frame 80”). These front and rear frames 70 and 80 are connected by a frame 62. The distance between the front and rear frames 70 and 80 is preferably the distance between any two axles 25 of the existing step chain 20. The illustrated transport cart 60 is configured to be connected to the front axle 25a and the fifth axle 25b of the existing step chain 20, and the distance between the front frame 70 and the rear frame 80 is the distance between the axles 25a and 25b. It corresponds.

  Since the transport cart 60 needs to pass through the upper floor side horizontal portion 11 bent in the horizontal direction from the inclined portion 12 of the existing truss 10, the frame 62 connecting the front frame 70 and the rear frame 80 has bottom rubbing and interference. In order to prevent this, it is preferable that the front and rear frames 70 and 80 are disposed at a height with a margin from the lower ends.

  As shown in FIG. 4, the front frame 70 has a first groove 71 that penetrates the lower end in the left-right direction and has an opening 72. The first groove 71 can be an inverted U-shaped groove, and the first groove 71 and its opening 72 have a width to fit the axle 25a of the existing step chain 20 described above. In the illustrated embodiment, the opening 72 is open downward.

  The opening 72 of the first groove 71 is configured to be closed by the lid 74 with a gap in which the axle 25a is fitted. The lid 74 can be attached to the front frame 70 by a fastener including two sets of bolts 75 and nuts 76 disposed on the front and rear sides of the first groove 71, for example. Then, the lid 74 is rotated around the other bolt 75 by removing one bolt 75 to open the opening 72, and the bolt 75 is fastened to the nut 76 while the opening 72 is closed. Thus, the opening 72 can be closed.

  Further, the front frame 70 is provided with a stopper 78 extending laterally in the vicinity of the lower end. The stopper 78 prevents the transport cart 60 from shaking when the transport cart 60 is pulled up or down in the existing truss 10, and prevents the transport cart 60 and the truss segment 50 from coming into contact with the existing truss 10. Specifically, the stopper 78 is formed at a position where it can contact the outer plate 22 or the inner plate 23 of the existing step chain 20 in a state where the first groove 71 is fitted to the axle 25a. In order not to interfere with the running of the existing step chain 20, it is desirable that the stopper 78 be formed at a position where it can contact the outer plate 22.

  The left and right stoppers 78, 78 have an output width that causes a clearance of about 3 mm to 7 mm with respect to the left and right outer plates 22, 22 of the existing step chain 20 when the transport cart 60 travels in the center of the existing truss 10. It is preferable to do. Assuming that the left and right stoppers 78 and 78 are always in contact with the outer plates 22 and 22, the stoppers 78 and 78 collide with the existing truss 10 when the transport cart 60 is carried in, or the stoppers 78 and 78 are already installed when the carriage 78 is lifted or lowered. This is because the travel of the step chain 20 may be hindered.

  As shown in FIG. 5, the rear frame 80 has a second groove 81 that penetrates the lower end in the left-right direction and has an opening 82. The second groove 81 is a long hole-shaped groove that is long in the front-rear direction, and the opening 82 has a width through which the axle 25b of the existing step chain 20 can pass. In the illustrated embodiment, the opening 82 opens downward.

  The second groove 81 is configured such that, with the front axle 25a of the existing step chain 20 fitted in the first groove 71, the existing step chain 20 is tensioned or the existing step chain 20 is slightly loosened, and the rear axle 25 ( In this embodiment, the opening 82 is provided at a position where the fifth axle 25b) shown in FIG.

  The length of the second groove 81 in the front-rear direction is determined when the transport cart 60 is moved from the lower floor horizontal portion 13 to the inclined portion 12 or from the inclined portion 12 to the upper floor horizontal portion 11 of the existing truss 10. Even if the trajectory of the chain 20 becomes a curved trajectory and the distance between the axles 25 changes, the axle 25b moves in the second groove 81, and the existing step chain 20 strongly abuts on the carrier-side track rail 15 or rises. It is preferable to set the length so that the vehicle can travel without any trouble. Desirably, the length of the second groove 81 in the front-rear direction is two to four times that of the axle 25.

  Similarly to the first groove 71, the opening 82 of the second groove 81 is configured to be closed by the lid body 84 with a gap in which the axle 25 b is fitted. The lid 84 can be attached to the rear frame 80 by a fastener composed of two sets of bolts 85 and nuts 86 disposed on the front and rear sides of the second groove 81, for example. Then, the lid 84 is rotated around the other bolt 85 by removing one bolt 85 to open the opening 82, and the bolt 85 is fastened to the nut 86 while the opening 82 is closed. Thus, the opening 82 can be closed.

  Further, the rear frame 80 is also provided with a stopper 88 extending laterally in the vicinity of the lower end. The stopper 88 prevents the transport cart 60 from shaking when the transport cart 60 is pulled up or down in the existing truss 10, and prevents the transport cart 60 and the truss segment 50 from coming into contact with the existing truss 10. Specifically, the stopper 88 is formed at a position where it can come into contact with the outer plate 22 or the inner plate 23 of the existing step chain 20 with the second groove 81 fitted to the axle 25b. In order not to hinder the running of the existing step chain 20, it is desirable that the stopper 88 is formed at a position where it can contact the outer plate 22.

  The left and right stoppers 88, 88 have an output width that produces a clearance of about 3 mm to 7 mm with respect to the left and right outer plates 22, 22 of the existing step chain 20 when the transport cart 60 travels in the center of the existing truss 10. It is preferable to do. Assuming that the left and right stoppers 88 and 88 are always in contact with the outer plates 22 and 22, the stoppers 88 and 88 collide with the existing truss 10 when the transport carriage 60 is carried in, and the stoppers 88 and 88 are already installed when the carriage 88 is lifted or lowered. This is because the travel of the step chain 20 may be hindered.

  In addition, the transport cart 60 has a plurality of connecting portions where the chain or the hooks of the chain blocks 34 and 44 are connected to the frame 62. At least one of the connecting portions is formed on the front side of the transport carriage 60.

  As shown in FIG. 3, the transport cart 60 configured as described above is mounted with a truss segment 50 and is carried into the internal space of the existing truss 10. The transport cart 60 on which the truss segment 50 is mounted is simply referred to as “transport cart 60” as appropriate. Below, the renewal construction method which carries in and installs the truss segment 50 toward the upper floor side from the lower floor side is demonstrated.

  Before carrying the transport cart 60, the existing step chain 20 is connected in advance to the chain block 34 of the portal lifting device 30 on the upper floor side and pulled up to a predetermined height. Further, the first and second grooves 71 and 81 of the transport carriage 60 slide the lids 74 and 84 so that the openings 72 and 82 are opened.

  First, the transport cart 60 is transported to the lower floor side horizontal portion 13 where the lower floor type gate lifting device 40 is installed by a manual forklift or the like, and a chain or hook of the chain block 44 is hung on the connecting portion. The block 44 is operated, and the transport cart 60 is lifted and inserted into the internal space of the existing truss 10.

  Next, the chain block 44 is operated to lower the transport carriage 60. As shown in FIGS. 6 and 7, the first groove 71 is fitted to the axle 25a at the front end of the existing step chain 20, and the lid 74 opens the first groove 71. Block 72. Since the opening 72 is configured to open downward, the axle 25 a can be inserted into the first groove 71 from the opening 72 simply by lowering the transport cart 60.

  Subsequently, the chain block 44 is operated to further lower the transport carriage 60. As shown in FIGS. 8 and 9, the second groove 81 is fitted to the axle 25b at the rear of the existing step chain 20, and the lid 84 is used. The opening 82 is closed. Since the opening 82 is configured to open downward, the axle 25 b can be inserted into the second groove 81 from the opening 82 only by lowering the transport cart 60.

  As described above, the transport cart 60 is integrated with the existing step chain 20 as shown in FIG. FIG. 10 shows a state where the first groove 71 and the second groove 81 of the transport carriage 60 are fitted to the axles 25a and 25b in a state where the existing step chain 20 is suspended from the lower floor side horizontal portion 13 to the inclined portion 12. Yes. As shown in the figure, the carrier-side track rail 15 is bent from a horizontal state to an inclined state from the lower floor side horizontal portion 13 to the inclined portion 12. Accordingly, the trajectory of the existing step chain 20 becomes a curved trajectory and the linear distance between the axles 25a and 25b is shortened. However, as shown in the enlarged view 11, the axle 25b moves forward in the second groove 81. The existing step chain 20 can be prevented from floating from the carrier-side track rail 15.

  Then, the chain or hook of the chain block 34 of the upper portal lifting device 30 is hung on the connecting portion in front of the transport cart 60 or the truss segment 50 of the newly installed truss.

  In this state, by winding up the chain block 34 of the upper portal lifting device 30, as shown in FIG. 12, the transport carriage 60 causes the roller 21 of the existing step chain 20 to travel on the existing carrier-side track rail 15. However, it is pulled up toward the upper floor in the internal space of the existing truss 10.

  While the transport cart 60 is being pulled up, the transport cart 60 may swing left and right, but the swing can be suppressed by the stoppers 78 and 88 coming into contact with the outer plate 22 of the existing step chain 20.

  FIG. 13 is a side view of the transport cart 60 on the way from the inclined portion 12 to the upper floor side horizontal portion 11. As shown in the figure, the carrier-side track rail 15 is bent from the inclined state to the horizontal state from the inclined portion 12 to the upper floor side horizontal portion 11. Accordingly, when the transport cart 60 is moved from the inclined portion 12 to the upper floor side horizontal portion 11, the trajectory of the existing step chain 20 becomes a curved trajectory, and the linear interval between the axles 25a and 25b is shortened. As shown in FIG. 14, the axle 25 b moves forward in the second groove 81, so that the existing step chain 20 can travel without strongly contacting the carrier-side track rail 15.

  When the transport cart 60 is pulled up to the upper floor side horizontal portion 11, the chain block 34 of the upper portal lifting device 30 is connected to the truss segment 50, and the connection between the truss segment 50 and the transport cart 60 is released. Then, the transport cart 60 may be moved to the lower floor side, or the transport cart may be removed from the existing step chain 20 and removed, and the truss segment 50 may be installed at a predetermined position of the existing truss 10.

  The remaining truss segments of the new truss are carried in the same manner, and the existing truss 10 can be connected to the existing truss 10 and the truss segments can be connected to each other so that the new truss can be installed in the internal space of the existing truss 10.

  After installing the new truss on the existing truss 10, the renewal of the escalator is completed by attaching steps, handrails, control devices, etc. to the new truss.

  The above description is for explaining the present invention, and should not be construed as limiting the invention described in the claims or limiting the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope described in the claims.

  For example, in the above-described embodiment, the truss segment 50 of the new truss is loaded from the lower floor side toward the upper floor side, but the transport cart 60 can also be loaded from the upper floor side toward the lower floor side. Moreover, when it is necessary to transport the truss segment 50 to a plurality of floors or a plurality of floors, the portal lifting devices 30 and 40 may be passed while the truss segment 50 is mounted on the transport carriage 60.

  Further, the transport cart 60 configured as described above transports not only the truss segment 50 of the newly-installed truss, but also various equipment necessary for the renewal construction method, portal lifting devices 30 and 40, various parts of the existing truss 10, and the like. It can also be used to

DESCRIPTION OF SYMBOLS 10 Existing truss 11 Upper floor side horizontal part 12 Inclination part 13 Lower floor side horizontal part 15 Existing carrier side track rail 20 Existing step chain 25 Axle 25a Axle (front end)
25b Axle (5th)
50 truss segment 60 transporting carriage 70 front frame 71 first groove 72 opening 74 lid body 78 stopper 80 rear frame 81 second groove 82 opening 84 lid body 88 stopper

Claims (4)

Renewal of the passenger conveyor, in which the new truss to be installed in the internal space of the existing truss is divided into a plurality of truss segments in the longitudinal direction and the truss segments are sequentially installed in the internal space of the existing truss Used in the construction method, the existing truss is a transport cart that transports the truss segment in a state where the existing carrier side track rail and the existing step chain running on the existing carrier side track rail are left,
A frame for loading the truss segments;
The frame has left and right protruding stoppers that can contact the outer plate or inner plate of the existing step chain.
A transport cart used in the renewal construction method for passenger conveyors. The frame includes
A first groove having an opening and fitting into an axle of the existing step chain;
A second groove having an opening, provided on the rear side of the first groove, and long before and after the rear axle of the existing step chain is fitted;
Having
A transport cart used in the renewal method of the passenger conveyor according to claim 1. A lid plate for closing the opening of the first groove and the second groove;
A transport cart used for the renewal method of the passenger conveyor according to claim 2 . The openings of the first groove and the second groove are opened downward;
A transport cart used in the renewal construction method for passenger conveyors according to claim 2 or claim 3 .

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