JP6699609B2 - Gate-type lifting device used for passenger conveyor renewal method - Google Patents

Description

  The present invention relates to a gate-type lifting device used for lifting a truss segment or the like in a method of renewing a passenger conveyor such as an escalator, and more specifically to a gate-type lifting device that can simplify assembly. Is.

  In the escalator, a renewal 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, the renewal period of the escalator can be significantly shortened.

  In the renewal method of Patent Document 1, parts and equipment (driving device, steps, handrail driving mechanism, control equipment, etc.) other than the existing truss are removed, and only the existing truss is left. A gate-type lifting device is installed on each of the upper and lower horizontal parts of the existing truss.

  The new truss is constructed by dividing it into a plurality of truss segments, and the truss segment is hoisted by the gate-type hoisting device, sequentially transported to the upper floor or the lower floor, and installed on the existing truss.

  In order to explain the schematic configuration of the gate-type lifting device 20, reference is made to FIG. 1 of the existing truss 10 in which the gate-type lifting device 20 is installed in the renewal method according to an embodiment of the present invention. In the figure, the gate-type lifting device 20 on the upper floor side is shown. The gate-type lifting device 20 includes, for example, a column frame 30 that is erected on the left and right frame members 14 of the existing truss 10, a vertical beam frame 40 that connects the upper ends of the column frames 30 back and forth, and a vertical beam. A horizontal beam frame 50 connecting the frames 40, and a central frame 60 connecting the centers of the horizontal beam frames 50 are the main components.

  In the prior art, the portal lifting device is assembled by bolting the column frame to the existing truss and bolting the frames together at the site of renewal.

JP, 2015-809, A

  The gate-type lifting device must be assembled on-site according to the existing truss. However, specifications such as dimensions and shapes of existing trusses are often different, and the trusses must be installed avoiding obstacles such as building columns. Furthermore, even within the same building, the specifications of the escalator may differ, or the location of obstacles may differ. For this reason, in the portal-type lifting device, it is necessary to adjust the positions of the bolt holes of each frame so that they can be assembled in advance according to the situation of each site. Therefore, a dedicated portal-type lifting device is installed for each existing truss. I had no choice but to make a device.

  Moreover, since the gate-type lifting device is not used constantly, but is used temporarily when the passenger conveyor is renewed, it is designed and manufactured specifically for the existing truss and the situation at the site. It was time-consuming and uneconomical to do.

  An object of the present invention is to provide a portal-type lifting device used in a renewal method in which the installation intervals of the support frames can be changed.

The gate-type lifting device according to the present invention,
A gate-type lifting device used for the renewal method of passenger conveyors and installed on an existing truss,
A plurality of pillar frames standing on the left and right frame members of the existing truss,
A vertical beam frame that connects the upper ends of the pillar frames that are erected on the frame members to the front and rear,
A horizontal beam frame connecting the vertical beam frames,
A central frame arranged between the vertical beam frames and connecting the horizontal beam frames to each other in the front-rear direction,
With
At least a part of the column frame and the vertical beam frame and/or the vertical beam frame and the horizontal beam frame is fixed by a clamp means.

  The clamp means may be a screw type.

  The pillar frame and the frame member, and the lateral beam frame and the central frame may be connected by bolting.

  A cane frame is stretched in an oblique direction between the pillar frame and the vertical beam frame, and the cane frame can be attached to the vertical beam frame by a clamp means.

  According to the portal-type lifting device used in the renewal method for the passenger conveyor according to the present invention, the vertical beam frame is fixed to the support frame by the clamp means. That is, the fixing positions of the column frame and the vertical beam frame are not limited in advance like bolting, and the vertical beam frame can be fixed by the clamp means at an arbitrary position matched with the column frame.

  That is, since the portal-type lifting device of the present invention has a degree of freedom in the installation intervals of the support frames, the support frames can be installed at intervals according to the specifications of the existing truss and the situation of the site, and the installed support frames can be installed vertically. Beam frame can also be fixed. Therefore, the assembly and installation of the gate-type lifting device can be simplified. Further, it is not necessary to design and manufacture a dedicated gate-type lifting device according to the specifications of the existing truss and the situation at the site in advance, and the frame can be shared, which is economically superior.

FIG. 1 is a perspective view of an existing truss (upper floor side) in which a gate-type lifting device is installed in a renewal method according to an embodiment of the present invention. FIG. 2 is a perspective view of the portal lifting device of the present invention. FIG. 3 is a perspective view showing a step of installing the support frame on the frame member. FIG. 4 is a diagram showing an example of the clamp means. FIG. 5 is an enlarged view of the circled portion A of FIG. 2 in the arrow direction. FIG. 6 is an enlarged view of the circled portion B of FIG. 2 in the arrow direction. FIG. 7 is an enlarged view of the circled portion C of FIG. 2 in the arrow direction. FIG. 8 is an enlarged view of the circled portion D of FIG. 2 in the arrow direction. FIG. 9 is an enlarged view of the circled portion E of FIG. 2 in the arrow direction. FIG. 10 is an enlarged view of the circled portion F of FIG. 2 in the arrow direction.

  Hereinafter, an embodiment in which the gate-type lifting device 20 of the present invention is used for a renewal method of an escalator as a passenger conveyor will be specifically described with reference to the drawings.

  The escalator renewal method, which is an embodiment of the present invention, is a method for installing a new truss in the internal space of the existing truss 10 without removing the existing truss 10. FIG. 1 is a perspective view of the existing truss 10 after the internal mechanism is removed, and shows only the vicinity of the upper floor side. The existing truss 10 includes an upper floor side horizontal portion 11, an inclined portion 12 and a lower floor side horizontal portion (not shown). These have upper floor side frame members 14 and 14, inclined part frame members 15 and 15, and lower floor frame members (not shown) on the left and right, respectively. The gate-type lifting device 20 is installed on each frame member. In the illustrated embodiment, all the pillar frames 30 of the gate-type lifting device 20 are arranged on the upper-floor-side frame members (hereinafter, simply referred to as “frame members”) 14, 14, but some of them are inclined. It can also be installed on the frame members 15, 15.

  The gate-type lifting device 20 is installed on the frame members 14 and 14 of the existing truss 10, as shown in FIG. The gate-type lifting device 20 includes, for example, a column frame 30, a vertical beam frame 40, a horizontal beam frame 50, and a central frame 60.

  For the frames 30, 40, 50 and 60, steel materials such as H-section steel, I-section steel, chevron steel, channel steel and Z-section steel can be adopted. In the illustrated embodiment, the column frame 30 is made of grooved steel, and the vertical beam frame 40, the horizontal beam frame 50, and the central frame 60 are made of H-shaped steel. In addition, in order to stably fix the frames to each other by the clamp means 80 (see FIG. 4) described later, it is desirable that the frame fixed by the clamp means 80 has parallel flanges instead of taper.

  The column frame 30 is a frame that is erected on the left and right frame members 14, 14 of the existing truss 10, and has a leg portion 32 attached to the lower end by welding or the like. As shown in FIG. A bolt hole 33 is opened in the. A top plate 35 is attached to the upper end of the column frame 30 by welding or the like.

  The vertical beam frame 40 is a frame that connects the upper ends of the column frames 30 to each other in the front-rear direction. The vertical beam frame 40 is fixed to the support frame 30 by the clamp means 80. The vertical beam frame 40 is configured to have a length that straddles the strut frames 30, 30 at the front end and the rear end, but may be configured by connecting a plurality of frames for reasons such as carrying in.

  The horizontal beam frame 50 is a frame that connects the left and right vertical beam frames 40, 40, and is fixed to the vertical beam frame 40 by a clamp means 80. In addition, bolt holes for bolting the central frame 60 are formed in appropriate positions in the lateral beam frame 50.

  The central frame 60 is a frame disposed between the vertical beam frames 40, 40 and on the lower surface of the horizontal beam frame 50. The central frame 60 has bolt holes formed at positions corresponding to the bolt holes of the horizontal beam frame 50, and is fixed to the horizontal beam frame 50 by bolts 92. A rail 62 (see FIG. 10) that allows a chain block (not shown) to slide back and forth is attached to the central frame 60, and the truss segment of the new truss is attached from the lower floor side to the upper floor side by the chain block. It is designed to be lifted up to or from the upper floor to the lower floor.

  Further, as shown in FIG. 2, the pillar frame 30 and the vertical beam frame 40 can be mounted with the cane frame 70 in an oblique direction for reinforcement. The cane frame 70 is fixed to the pillar frame 30 by bolts 94 and to the vertical beam frame 40 by clamp means 80.

  The clamp means 80 used for fixing the frames to each other is a fastener that fixes the two frames by sandwiching them. As the clamp means 80, for example, as shown in FIG. 4, one in which the screws 84, 84 can enter the opening 82 of the substantially C-shaped clamp body 81 from the facing position can be exemplified. Although the illustrated clamping means 80 is Iron Man (registered trademark) manufactured by Super Tool Co., Ltd., the clamping means 80 is not limited to this, and may be a C-shaped clamp, a B-shaped clamp, or the like called a shrimp vise. Alternatively, the screw 84 may be one that enters only from one side, or one that uses a spring. A swivel head may be attached to the tip of the screw 84.

  The gate-type lifting device 20 can be assembled in the following manner by using each of the frames 30, 40, 50, 60 having the above-described configuration.

  First, as shown in FIG. 3, the column frame 30 is erected on the frame member 14 of the existing truss 10. When the bolt hole 17 is previously formed in the frame member 14, the bolt hole 17 is used. If there is no bolt hole at a desired position of the frame member 14, a new bolt hole 17 may be formed.

  The column frame 30 can be installed with a degree of freedom in the front-rear direction (arrow L in FIG. 3) according to the bolt holes 17 of the frame member 14. In addition, it is desirable that the pillar frames 30 are arranged at equal intervals as much as possible while avoiding obstacles such as pillars of the building. Then, the bolt hole 17 of the frame member 14 and the bolt hole 33 of the leg portion 32 are aligned and bolted 90. As a result, the support frame 30 is erected on the frame member 14.

  Then, the vertical beam frame 40 is mounted. The vertical beam frame 40 may be placed on the top plate 35 so as to straddle the support frame 30 erected on each frame member 14. Then, as shown in FIGS. 5 and 6 which are enlarged views of the circled portions A and B in FIG. 2 in the arrow direction, the top plate 35 and the flange of the vertical beam frame 40 are fixed by the clamp means 80. By fixing these by the clamp means 80, the bolt holes are not necessary in the top plate 35 and the vertical beam frame 40 in advance, and the alignment of the bolt holes is also unnecessary. Therefore, even if the installation intervals of the pillar frames 30 are different, the pillar frame 30 and the vertical beam frame 40 can be easily and reliably fixed.

  In the illustrated embodiment, the column frame 30 is installed so that the opening side of the U-shaped frame faces inward, and the clamp means 80 is mounted from the inside. This is to prevent the clamp means 80 from popping out from the gate-type lifting device 20 and increasing the installation area.

  After fixing the vertical beam frame 40 to the support frame 30, the horizontal beam frame 50 is mounted. The horizontal beam frame 50 is installed on the vertical beam frame 40 so as to straddle the vertical beam frames 40, 40. Then, the flanges of the vertical beam frame 40 and the horizontal beam frame 50 are fixed by the clamp means 80 as shown in FIGS. By fixing these with the clamp means 80, the bolt holes are not necessary in the vertical beam frame 40 or the horizontal beam frame 50 in advance, and the alignment between the bolt holes is also unnecessary. Therefore, the installation interval of the horizontal beam frame 50 can be provided with flexibility, and the vertical beam frame 40 and the horizontal beam frame 50 can be fixed easily and reliably. When the horizontal beam frame 50 is attached to the vertical beam frame 40 at a predetermined interval, bolting may be adopted. Furthermore, when it is necessary to change the installation interval of the horizontal beam frame 50 for the purpose of avoiding obstacles, bolting and fixing with the clamp means 80 may be used together.

  After fixing the horizontal beam frame 50 to the vertical beam frame 40, the central frame 60 is mounted. The central frame 60 is installed on the lower surface of the horizontal beam frame 50 so as to be substantially central and substantially parallel between the vertical beam frames 40, 40. In the present embodiment, the central frame 60 is fixed to the lateral beam frame 50 by bolts 92, as shown in an enlarged view of the circled portion F of FIG. This is because the chain block is attached to the rail 62 of the central frame 60, the chain block slides back and forth, and a load for lifting a heavy object such as a truss segment of a new truss is applied. Of course, the bolts 92 may be replaced by clamp means for connection.

  Although the assembling of the gate-type lifting device 20 is completed as described above, it is desirable to mount the cane frame 70 for maintaining the verticality of the column frame 30 and the vertical beam frame 40 and for reinforcement. The cane frame 70 is bolted 94 to the column frame 30 as shown in FIG. 2, and is fixed to the vertical beam frame 40 by the clamp means 80 as shown in FIGS. 7 and 9. This is because the vertical beam frame 40 may be mounted at a different position with respect to the support frame 30. Of course, the cane frame 70 may be connected to the support frame 30 by a clamp means.

  As described above, in the portal-type lifting device 20 of the present invention, the vertical beam frame 40 can be fixed by the clamp means 80 at any position according to the installation interval of the support frame 30. Further, since the horizontal beam frame 50 is also fixed to the vertical beam frame 40 by the clamp means 80, the installation position can be changed. Therefore, the assembly and installation of the gate-type lifting device 20 can be simplified. In addition, it is not necessary to design and manufacture a dedicated gate-type lifting device 20 according to the specifications of the existing truss 10 or the situation at the site in advance, and the frame can be shared, which is economically superior.

  After the renewal of the escalator is completed, the portal lifting device 20 may be disassembled in order in the reverse order of the above procedure. In the present invention, since the portal lifting device 20 is not a dedicated product, it can be reused at another renewal site.

  The above description is for explaining the present invention, and should not be understood as limiting the invention described in the claims or limiting the scope. Further, it is needless to say that 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, the numbers of the column frames 30 and the lateral beam frames 50 are not limited to those in the above embodiment. Further, the clamp means 80 is not limited to that shown in FIG.

  Further, in the above embodiment, the clamp means 80 is used to fix the column frame 30 and the vertical beam frame 40, the vertical beam frame 40 and the horizontal beam frame 50, and the vertical beam frame 40 and the cane frame 70. Part of it may be bolted.

  Furthermore, in the above-described embodiment, the gate-type lifting device 20 of the upper floor side horizontal portion 11 has been described, but the present invention is also applicable to the gate-type lifting device of the lower floor side horizontal portion.

10 Existing truss 14 Frame member (upper floor side frame member)
20 Gate-type lifting device 30 Support frame 40 Vertical beam frame 50 Horizontal beam frame 60 Central frame 70 Cane frame 80 Clamping means

Claims (3)

A gate-type lifting device used for the renewal method of passenger conveyors and installed on an existing truss,
A plurality of pillar frames standing on the left and right frame members of the existing truss,
A vertical beam frame that connects the upper ends of the pillar frames that are erected on the frame members to the front and rear,
A horizontal beam frame connecting the vertical beam frames,
A central frame arranged between the vertical beam frames and connecting the horizontal beam frames to each other in the front-rear direction,
With
At least a part of the pillar frame and the vertical beam frame, and/or the vertical beam frame and the horizontal beam frame are fixed by a clamp means ,
The pillar frame and the frame member, and the lateral beam frame and the central frame are connected by bolts ,
A gate-type lifting device used in the renewal method for passenger conveyors. The clamp means is a screw type,
The gate-type lifting device according to claim 1. Between the pillar frame and the vertical beam frame, a cane frame is stretched in an oblique direction, and the cane frame is attached to the vertical beam frame by a clamp means.
The gate-type lifting device according to claim 1 or 2 .

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