JP5893107B1 - Boarding board removal jig - Google Patents

Abstract

It is an object of the present invention to provide a boarding / removing plate removing jig that improves workability. A boarding / removing board removing jig 100 according to an embodiment holds a holding object attached to a boarding board of a passenger conveyor, and pulls the boarding / removing board in a holding state holding the holding object to a side opposite to the boarding / alighting board side. It is a jig that pulls up the boarding board from the support table and removes the boarding board from the support board. The first hook portion 214 of the first opening / closing member 21 has a first recess 216 into which a part of the neck portion 8b is inserted when the second opening / closing member 22 is closed with respect to the first opening / closing member 21 by the opening / closing mechanism 23. Is formed. The second hooking portion 224 of the second opening / closing member 22 faces the first hooking portion 214 in the closed state, and a part of the neck portion 8b that is different from the portion inserted into the first recess 216 is included. A second recess 226 to be inserted is formed. In the closed state, the protruding neck portion 8 b is sandwiched between the first hook portion 214 and the second hook portion 224. [Selection] Figure 5

Description

  Embodiments of the present invention relate to a boarding / removing plate removal jig for removing a boarding / alighting plate of a passenger conveyor.

  Conventionally, in passenger conveyors such as escalators, boarding boards are arranged at positions where passengers get on and off. Below the boarding board, for example, a device for driving the escalator is disposed, and the boarding board is removed when the escalator is inspected and maintained.

  When removing the boarding / alighting board, the boarding / alighting board is fixed to the support base by mounting screws, so that the board can be separated from the support base by loosening the screw with a screwdriver. The loosened screw is attached so as not to come off the boarding board. A boarding board attaching / detaching jig is hooked on the neck portion of the screw which is loosened and protrudes from the upper surface of the boarding board, and the board is pulled up and removed. For example, the boarding / removing plate attaching / detaching jig includes a rod-shaped main body portion, a hook portion attached to one end of the main body portion and having a tip split into two, and a grip portion attached to the other end of the main body portion. A bifurcated hook is hooked on the neck of the screw from one side, the gripping part is grasped, and the boarding board connected to the screw is pulled up and removed.

Japanese Patent Laid-Open No. 1-281284

  However, further improvements have been desired to improve workability.

  Therefore, a problem to be solved by the present invention is to provide a boarding / removing plate removing jig that improves workability.

The boarding / removing plate removing jig according to the embodiment holds the holding object attached to the boarding / alighting board of a passenger conveyor, and pulls the boarding / alighting board in a holding state holding the holding object to the side opposite to the boarding / alighting board side. Is a jig that pulls up the board from the support base and removes the boarding / alighting plate from the support base. The first opening / closing member has a first hooking portion facing the boarding / exiting plate. The second opening / closing member has a second hooking portion facing the boarding / alighting plate. The opening / closing mechanism allows the second opening / closing member to be opened and closed with respect to the first opening / closing member. The holding object is a rod-like member being enlarged head than the body portion, and a non-projected state where the neck portion does not protrude between at least the body portion and the head portion from the surface of the elevating plate, wherein It can change with respect to the boarding / alighting board to the protrusion state in which the said neck part protrudes from the surface of the boarding / alighting board in the state which screwed into the screw hole formed in the boarding / alighting board. The first hook is formed with a first recess into which a part of the neck is inserted when the second opening / closing member is closed with respect to the first opening / closing member by the opening / closing mechanism. In the closed state, the second hooking portion faces the first hooking portion, and a second portion of the neck portion that is different from the portion inserted into the first recess is inserted. A recess is formed. In the closed state, the protruding neck portion is clamped between the first hook portion and the second hook portion.

FIG. 1 is a schematic diagram illustrating a configuration example of an escalator according to the embodiment. FIG. 2 is a top view illustrating a configuration example of a boarding / exiting plate according to the embodiment. FIG. 3 is a perspective view showing a configuration example (closed state) of the boarding / removing plate removing jig according to the embodiment. FIG. 4 is a perspective view illustrating a configuration example (open state) of the boarding / removing plate removing jig according to the embodiment. FIG. 5 is a perspective view showing a usage example of the boarding / removing plate removing jig according to the embodiment. FIG. 6 is a partially cutaway view showing a usage example of the boarding / removing plate removing jig according to the embodiment. FIG. 7 is a top view showing an example of removal for removing the boarding / exiting plate according to the embodiment.

Embodiment
Based on FIG. 1 and FIG. 2, the structural example of the escalator which concerns on embodiment is demonstrated. FIG. 1 is a schematic diagram illustrating a configuration example of an escalator according to the embodiment. FIG. 2 is a top view illustrating a configuration example of a boarding / exiting plate according to the embodiment. The escalator 1 shown in FIG. 1 includes an escalator main body 2 and a structural frame 3 and carries the passenger Pa from the upper position to the lower position in the building (not shown) or from the lower position to the upper position. The escalator body 2 includes a step 4, a balustrade 5, a boarding board 6, and a comb 7.

  The structural frame 3 is provided below the escalator body 2 with a certain space over the entire length of the escalator body 2 in the traveling direction of the escalator 1 (hereinafter referred to as the total length of the escalator body 2). A drive device (not shown) that drives the escalator body 2 is accommodated in the structural frame 3.

  A plurality of steps 4 are connected endlessly, and are disposed over the entire length of the escalator body 2. A plurality of endlessly connected steps 4 are partially exposed from the structural frame 3 to form a step shape and travel in the traveling direction of the elevator 1. The plurality of connected steps 4 carry passengers Pa from the upper position in the building to the lower position, or from the lower position to the upper position. In this example, a plurality of steps 4 connected to carry passenger Pa from the upper position to the lower position.

  The balustrade 5 is erected from both sides in the width direction of the plurality of connected steps 4 in the entire length of the escalator body 2. The balustrade 5 includes a deck board 5a, a side panel 5b, and a handrail belt 5c. The deck boards 5 a are arranged on both sides of the escalator body 2 in the width direction of the step 4 connected to the escalator body 2 in the width direction. The deck board 5a covers and hides a rotation mechanism (not shown) that rotates the handrail belt 5c.

  The side panel 5b is erected from deck boards 5a arranged on both sides in the width direction of the plurality of connected steps 4 over the entire length of the escalator body 2. The side panel 5b is erected so as to have a certain height (the height of the waist of the passenger Pa).

  The handrail belt 5c is formed in an endless shape, and circulates on the outer edge of the side panel 5b in the same traveling direction as the step 4 at the same speed as the step 4. The handrail belt 5c serves as a support when the passenger Pa gets on the step 4 of the escalator 1.

  The boarding / exiting board 6 is disposed at a position where the passenger Pa gets on and off the plurality of steps 4 connected to each other, and passes when the passenger Pa gets into the step 4 or gets off the step 4. The boarding board 6 has a length L in the longitudinal direction of the boarding board 6 of about 120 cm. The boarding / alighting plate 6 is fixed to the support base 9 of the structural frame 3 with screws (screws) 8. For example, the boarding / alighting plate 6 has a rear end portion 6 a fixed to the support base 9 by two screws 8. The boarding / alighting plate 6 is removed from the support 9 of the structural frame 3 when performing maintenance and inspection of a driving device (not shown) that drives the step 4 of the escalator body 2 and the handrail belt 5c.

  A plurality of combs 7 are attached to the front end 6b of the boarding / alighting plate 6 (the side facing the traveling direction of the escalator 1), and arranged so as to face the step 4. Each comb 7 is made of plastic with a size of about 12 cm. The comb 7 removes foreign matter between the cleats 4a formed on each step 4.

  Next, based on FIG. 3 and FIG. 4, the structural example of the boarding / alighting board removal jig | tool which concerns on embodiment is demonstrated. FIG. 3 is a perspective view showing a configuration example (closed state) of the boarding / removing plate removing jig according to the embodiment. FIG. 4 is a perspective view illustrating a configuration example (open state) of the boarding / removing plate removing jig according to the embodiment.

  A boarding / removing plate removal jig 100 (hereinafter also referred to as a jig 100) shown in FIG. 3 holds a screw 8 that is a holding target attached to a boarding / unloading plate 6 of a passenger conveyor such as the escalator 1, and holds the screw 8. In this holding state, the jig is pulled to the opposite side to the boarding board 6 side to pull the boarding board 6 from the support base 9 and remove the boarding board 6 from the support board 9. The screw 8 (see FIG. 5 and the like) is a rod-shaped member that includes a head portion 8a, a neck portion 8b, and a trunk portion 8c, and the head portion 8a has a diameter larger than that of the trunk portion 8c. The head portion 8a is coupled to one end 8d of the trunk portion 8c, and a portion between the head portion 8a and the trunk portion 8c (a coupling portion) corresponds to the neck portion 8b. The diameter of the head portion 8a of the screw 8 is about 15 mm, and the diameter of the body portion 8c is about 8 mm. The screw 8 can be changed with respect to the boarding / alighting plate 6 into a non-projecting state in which at least the neck part 8b does not project from the surface 6c of the boarding / alighting plate 6 and a projecting state in which the neck part 8b projects from the surface 6c of the boarding / alighting plate 6.

  The boarding / removing plate removing jig 100 includes a jig body 20, a rod-shaped first projecting member 31 attached to the jig body 20, and a rod-shaped second projecting member 32. The jig body 20 is formed of a steel material or the like, and includes a first opening / closing member 21 and a second opening / closing member 22, and the opening / closing mechanism that allows the second opening / closing member 22 to be opened and closed with respect to the first opening / closing member 21. 23. The main body 210 of the first opening / closing member 21 and the main body 220 of the second opening / closing member 22 have a semi-cylindrical shape. When the second opening / closing member 22 is closed with respect to the first opening / closing member 21 by the opening / closing mechanism 23, the main body 210 of the first opening / closing member 21 and the main body 220 of the second opening / closing member 22 have a cylindrical shape. For example, one side 211 extending in the height direction of the main body 210 of the first opening / closing member 21 and one side 221 extending in the height direction of the main body 220 of the second opening / closing member 22 are such that the main bodies 210, 220 are mutually connected. It arrange | positions on the rotating shaft Q so that it may oppose, and it is being fixed with the hinge 40 of two places. A rotation shaft 41 of the hinge 40 is disposed on the rotation shaft Q. As described above, the opening / closing mechanism 23 is configured such that the main body 210 of the first opening / closing member 21 and the main body 220 of the second opening / closing member 22 are fixed by the hinge 40, so It can be opened and closed freely.

  The first opening / closing member 21 and the second opening / closing member 22 rotate around the rotation shaft 41 of the hinge 40, and the other side 212 extending in the height direction of the main body 210 of the first opening / closing member 21, 2 The opening / closing member 22 is closed when the other side 222 extending in the height direction of the main body 220 contacts or approaches. The first opening / closing member 21 and the second opening / closing member 22 are in an open state in a state where the other side 212 of the main body 210 of the first opening / closing member 21 and the other side 222 of the main body 220 of the second opening / closing member 22 are separated from each other. Become.

  The first opening / closing member 21 has a first hook portion 214 facing the boarding / alighting plate 6 on the bottom surface 213 of the main body 210. For example, the first hook 214 is formed with a first recess 216 into which a part of the neck 8b is inserted when the second opening / closing member 22 is closed with respect to the first opening / closing member 21 by the opening / closing mechanism 23. Yes. For example, the first hook portion 214 is provided so as to extend from the inner wall surface 215 of the main body 210 of the first opening / closing member 21 in the inner diameter direction, and has a first recess 216 surrounding the half circumference of the neck portion 8 b of the screw 8. It is a shape board member. That is, the first hook portion 214 is a plate member formed in a semicircular shape so as to close the bottom surface 213 of the main body 210 when the semicylindrical main body 210 is viewed from the height direction. A first concave portion 216 is formed by cutting a central portion of the line segment of the semicircular plate member along the shape of the half circumference of the neck portion 8 b of the screw 8.

  The second opening / closing member 22 has a second hook portion 224 that faces the boarding / alighting plate 6 on the bottom surface 223 of the main body 220. For example, when the second hooking portion 224 is in the closed state, the second hooking portion 224 is opposed to the first hooking portion 214, and a part of the neck portion 8b that is different from the portion inserted into the first recess 216 is inserted. Two recesses 226 are formed. For example, the second hooking portion 224 is provided so as to extend from the inner wall surface 225 of the main body 220 of the second opening / closing member 22 in the inner diameter direction, and has a second recess 226 that surrounds the remaining half circumference of the neck portion 8 b of the screw 8. It is a circular plate member. That is, the second hook portion 224 is a plate member formed in a semicircular shape so as to close the bottom surface 223 of the main body 220 when the semicylindrical main body 220 is viewed from the height direction. A second concave portion 226 is formed by cutting out the central portion of the line segment of the semicircular plate member along the shape of the half circumference of the neck portion 8 b of the screw 8.

  When the first opening / closing member 21 and the second opening / closing member 22 are closed, the first hooking portion 214 and the second hooking portion 224 face each other, and the first recess 216 and the second recess 226 have a circular opening 24. Form. For example, the opening 24 is slightly larger than the outer periphery of the neck 8 b of the screw 8 and smaller than the outer periphery of the head 8 a of the screw 8.

  A semi-disc-shaped lid 218 is provided on the other end of the main body 210 of the first opening / closing member 21, that is, on the upper surface 217 of the main body 210. That is, the lid 218 is a plate member formed in a semicircular shape so as to close the upper surface 217 of the main body 210 when the semicylindrical main body 210 is viewed from the height direction. The lid portion 218 is provided to extend in the inner diameter direction from the inner wall surface 215 of the main body 210 so as to be parallel to the first hook portion 214, and has substantially the same shape as the first hook portion 214 except for the first recess 216. It is.

  A semi-disc-shaped lid 228 is provided on the other end of the main body 220 of the second opening / closing member 22, that is, on the upper surface 227 of the main body 220. That is, the lid 228 is a plate member formed in a semicircular shape so as to close the upper surface 227 of the main body 220 when the semicylindrical main body 220 is viewed from the height direction. The lid portion 228 is provided to extend in the inner diameter direction from the inner wall surface 225 of the main body 220 so as to be parallel to the second hook portion 224, and has substantially the same shape as the second hook portion 224 except for the second recess 226. It is. When the first and second opening / closing members 21 and 22 are closed, the lid portions 218 and 228 have a disk shape, and have a function as a lid of the jig body 20 and a function of reinforcing the jig body 20.

  The rod-shaped first protruding member 31 is attached to the outer peripheral surface 219 of the first opening / closing member 21 and protrudes from the outer peripheral surface 219. The rod-shaped second projecting member 32 is attached to the outer peripheral surface 229 of the second opening / closing member 22 and projects from the outer peripheral surface 229. The 1st protrusion member 31 and the 2nd protrusion member 32 are formed from steel materials, resin, etc.

  The first projecting member 31 includes a projecting portion 310 on which a worker hooks a finger and a retaining portion 311. In the first projecting member 31, the other end 313 of the projecting portion 310 is attached to the lid portion 218 side of the first opening / closing member 21 with a screw (not shown) perpendicular to the outer peripheral surface 219 of the main body 210. The retaining portion 311 is provided at one end 312 of the projecting portion 310 to prevent the operator's finger from coming off the projecting portion 310.

  The second projecting member 32 includes a projecting portion 320 on which an operator hooks a finger and a retaining portion 321. In the second projecting member 32, the other end 323 of the projecting portion 320 is attached to the lid portion 228 side of the second opening / closing member 22 with a screw (not shown) perpendicular to the outer peripheral surface 229 of the main body 220. The retaining portion 321 is provided at one end 322 of the projecting portion 320 to prevent the operator's hand from being detached from the projecting portion 320. The protrusions 310 and 320 have such a length that two to three fingers are hooked.

  When the first opening / closing member 21 and the second opening / closing member 22 are in the closed state, the first protruding member 31 and the second protruding member 32 are positioned coaxially. That is, the first and second open / close members 21 and 22 are closed, and the first and second projecting members 31 and 32 project in opposite directions around the jig body 20, respectively. When viewed from the front, 100 is formed in a cross shape by the jig body 20, the first projecting member 31, and the second projecting member 32. The worker puts a finger on the first and second projecting members 31 and 32 and holds the jig 100 with one hand.

  The first projecting member 31 and the second projecting member 32 are covered with a non-slip member 33 such as rubber or resin at least in a region where the operator's hand contacts when gripping the operator. For example, the anti-slip member 33 covers the outer peripheral curved surfaces of the protrusions 310 and 320 with rubber, and a plurality of grooves 330 are formed along the outer peripheral curved surface.

  The jig body 20 is provided with a lock mechanism 50. The lock mechanism 50 restricts relative movement of the first opening / closing member 21 and the second opening / closing member 22 in the closed state. For example, the lock mechanism 50 includes a claw portion 51 and a hooking portion 52. The claw portion 51 is attached in the vicinity of the other side 222 of the main body 220 of the second opening / closing member 22. The hook 52 is attached to the first opening / closing member 21 in the vicinity of the other side 212 of the main body 210 of the first opening / closing member 21 at a position facing the claw 51 in the closed state. . With the first and second opening / closing members 21, 22 closed, the hook member 520 of the hooking portion 52 is hooked on the claw portion 51, and the first and second opening / closing members 21, 22 are locked.

  Next, a usage example of the boarding / removing plate removing jig 100 will be described with reference to FIGS. FIG. 5 is a perspective view showing a usage example of the boarding / removing plate removing jig according to the embodiment. FIG. 6 is a partially cutaway view showing a usage example of the boarding / removing plate removing jig according to the embodiment. FIG. 7 is a top view showing an example of removal for removing the boarding / exiting plate according to the embodiment.

  When removing the boarding board 6 from the support base 9 arranged in the structural frame 3 of the escalator 1, the two screws 8 fixing the boarding board 6 to the support base 9 are loosened. For example, a screwdriver (not shown) is inserted into the cross hole of the head 8 a of the screw 8 to loosen the screw 8, and the body portion 8 c of the screw 8 is unscrewed from the screw hole 9 a of the support base 9. At this time, the screw 8 is in a protruding state in which the body portion 8 c is screwed into the screw hole 6 d of the boarding board 6 and the head 8 a and the neck 8 b protrude from the surface 6 c of the boarding board 6.

  If the locking mechanism 50 is locked when the jig 100 is used, the locking mechanism 50 is unlocked. For example, the hanging material 520 of the hanging portion 52 is removed from the claw portion 51. With the lock mechanism 50 unlocked, the first opening / closing member 21 and the second opening / closing member 22 are centered on the rotation shaft 41 of the hinge 40, and the other side 212 of the first opening / closing member 21 and the second opening / closing member. 22 is rotated in a direction away from the other side 222 to open the jig body 20.

  Then, as shown in FIG. 5, for example, the second recessed portion 226 of the second hook portion 224 is fitted to the half circumference portion of the neck portion 8 b of the screw 8 protruding from the surface 6 c of the boarding / exiting plate 6. The first opening / closing member 21 is rotated so that the other side 212 of the opening / closing member 21 abuts on the other side 222 of the second opening / closing member 22, and the first opening / closing member 21 and the second opening / closing member 22 are closed and closed. And

  Then, the hook member 520 of the hook portion 52 is hooked on the claw portion 51 of the lock mechanism 50 to lock the first and second opening / closing members 21 and 22. At this time, the neck portion 8b is sandwiched between the first hook portion 214 and the second hook portion 224, and the first recess portion 216 of the first hook portion 214 and the second recess portion 226 of the second hook portion 224 are configured. A circular opening 24 surrounds the entire circumference of the neck 8 b of the screw 8.

  As described above, the screw 8 is held by the jig 100 by the neck 8b being sandwiched between the first hook portion 214 and the second hook portion 224 in the closed state of the jig 100. Therefore, when the boarding / alighting plate 6 can be separated from the support base 9 (a state where the boarding / alighting board 6 is not fixed to the support base 9), the first and second projecting members 31, 32 are gripped and cured with one hand. When the tool 100 is pulled to the opposite side (arrow P direction) from the boarding / unloading plate 6, the boarding / unloading plate 6 is pulled up in a direction away from the support base 9 via the screw 8. Thereby, the boarding / alighting board 6 can be removed from the support base 9. The boarding board 6 removed from the support base 9 is conveyed to a desired place. For example, as shown in FIG. 7, the boarding board 6 is transported to the space surrounded by the safety fence 60. In this case, the jig 100 may be attached to the two screws 8 of the boarding board 6 and the boarding board 6 may be transported by two workers, or the jig 100 may be attached to only one screw 8 and the operator. You may carry the boarding board 6 alone.

  As described above, according to the boarding / removing plate removing jig 100 according to the embodiment, when the first opening / closing member 21 and the second opening / closing member 22 are in the closed state, the protruding neck portion 8b is connected to the first hooking portion 214 and the second hooking portion. It is sandwiched between the portion 224. Thereby, when the jig 100 is in the closed state, the screw 8 does not come off the jig 100 in the vertical direction and the horizontal direction, so that the position where the worker grips the jig 100 and the removal of the boarding board 6 after the gripping. In operation, it is not necessary to consider the direction of the force applied to the jig 100 in order to remove the boarding / alighting plate 6, so that the boarding / alighting plate 6 can be easily removed from the support base 9.

  Moreover, since the 1st protrusion member 31 protrudes from the outer peripheral surface 219 of the 1st opening-and-closing member 21, and the 2nd protrusion member 32 also protrudes from the outer peripheral surface 229 of the 2nd opening-and-closing member 22, when holding the jig | tool 100 with one hand. In addition, the finger is caught by the first projecting member 31 and the second projecting member 32, and the jig 100 can be easily lifted with one hand to the side opposite to the boarding / exiting plate 6.

  In addition, since the first projecting member 31 and the second projecting member 32 are covered with a non-slip member 33 such as rubber or resin at least in a region where the operator's hand is in contact with the operator, The operator's fingers hooked on the second projecting members 31 and 32 are difficult to slip. Even when sweating during the work, it is difficult to slip by the anti-slip member 33, so the board 6 can be easily removed from the support base 9 and the board 6 can be easily transported to the safety fence 60. become able to.

  Further, since the lock mechanism 50 restricts the relative movement of the first opening / closing member 21 and the second opening / closing member 22 in the closed state, the jig 100 is not opened freely, and the board 6 can be easily removed or removed. Carrying work can be performed.

  In addition, although the first opening / closing member 21 and the second opening / closing member 22 are in the closed state, the main body 210 of the first opening / closing member 21 and the main body 220 of the second opening / closing member 22 have a cylindrical shape. Alternatively, a polygonal shape such as a quadrangular prism may be used. Moreover, since the load of the boarding / alighting board 6 is applied to the 1st and 2nd hook parts 214 and 224, you may make it provide the reinforcement material (rib) for reinforcing the 1st and 2nd hook parts 214 and 224. FIG. . In addition, it has been described that the first and second opening / closing members 21 and 22 are closed and the first and second hooks 214 and 224 have the circular opening 24 at the center. If possible, the shape of the opening 24 is not limited to a circle. For example, it may be a polygon. The first and second hooks 214 and 224 may be shaped like a claw that supports the head 8 a of the screw 8. In this case, the head 8a of the screw 8 is supported at least at three locations.

  Moreover, although the 1st opening / closing member 21 and the 2nd opening / closing member 22 demonstrated the integrated structure opened and closed by the hinge 40, you may make the 1st opening / closing member 21 and the 2nd opening / closing member 22 into a different structure. . In this case, an uneven portion used for alignment when the first opening / closing member and the second opening / closing member are combined is provided, and the first opening / closing member and the second opening / closing member are combined when the first opening / closing member and the second opening / closing member are combined. A fastener for fixing the opening / closing member so as not to be separated is provided.

  The first projecting member 31 and the second projecting member 32 may be any members as long as the jig body 20 can be gripped, and are not limited to the rod-shaped first and second projecting members 31 and 32. For example, the first and second projecting members 31 and 32 may be curved instead of rods. Further, the first projecting member 31 and the second projecting member 32 may be ring-shaped gripping members that lift and grip the jig main body 20, or are provided with recesses or claws for catching hands on the jig main body 20. You may do it.

  Moreover, the screw 8 for transporting the boarding / alighting board 6 is not limited to what fixes the boarding / alighting board 6 to the support stand 9, and may be used only for transporting the boarding / alighting board 6. In this case, it is conceivable to provide the screw 8 at a position where the boarding board 6 is easily transported, for example, at the center of both ends of the boarding board 6. Further, the screw 8 for transporting the boarding / alighting plate 6 may be a combination of a screw for fixing the boarding / alighting plate 6 to the support base 9 and a screw used only for transporting the boarding / alighting plate 6. Moreover, although the board | substrate 6 was fixed in two places with the screw 8, you may make it fix two or more places.

  Moreover, although the example which fixes the screw 8 to the boarding board 6 by screwing the screw 8 to the boarding board 6 was demonstrated, you may make it fix the screw 8 to the boarding board 6 with a nut. For example, a screw is inserted into a screw hole of a boarding / alighting plate in which no screw groove is formed, and the screw is prevented from being removed by a nut. The thread groove of the screw is formed only at the tip portion of the screw, and the tip portion of the screw is screwed into the screw hole of the support base 9 to fix the boarding board to the support base 9.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Escalator, 2 Escalator main body, 3 Structure frame, 4 steps, 5a deck board, 5b side panel, 5c handrail belt, 6 boarding board, 8 screw, 8a head, 8b neck, 8c trunk, 9 support stand, 20 Jig body, 21 1st opening / closing member, 210,220 body, 214 1st hook part, 216 1st recessed part, 218,228 lid part, 22 2nd opening / closing member, 224 2nd hook part, 226 2nd recessed part, 24 Opening part, 31 1st protrusion member, 310, 320 protrusion part, 311, 321 Retaining part, 32 2nd protrusion member, 33 Non-slip member, 40 Hinge, 41, Q Rotating shaft, 50 Lock mechanism

Claims (4)

The holding object attached to the boarding board of the passenger conveyor is held, and the boarding board is pulled up from the support base by pulling the boarding board on the opposite side of the boarding board while holding the holding object. A boarding / removing plate detaching jig for detaching a board from the support base, wherein the first opening / closing member has a first hooking part facing the boarding board and the second opening / closing member has a second hooking part facing the boarding board. And an opening / closing mechanism that allows the second opening / closing member to be opened / closed with respect to the first opening / closing member, and the holding object is a rod-shaped member having a head whose diameter is larger than that of the body portion, The non-projecting state where at least the neck between the trunk and the head does not protrude from the surface of the boarding board, and the surface of the boarding board in a state where the holding object is screwed into a screw hole formed in the boarding board Projecting shape from which the neck protrudes In addition, the first hooking portion can be changed with respect to the boarding / alighting plate, and when the second opening / closing member is closed with respect to the first opening / closing member by the opening / closing mechanism, a part of the neck portion is inserted. A first recessed portion is formed, and the second hook portion is opposed to the first hook portion in the closed state, and a portion of the neck portion that is inserted into the first recess portion is A boarding board having a second recessed portion into which a different portion is inserted, wherein the neck portion in the projecting state is sandwiched between the first hook portion and the second hook portion in the closed state. Removal jig.   The boarding / removing plate removing jig according to claim 1, further comprising a lock mechanism for restricting relative movement of the first opening / closing member and the second opening / closing member in the closed state.   A first protruding member attached to the outer peripheral surface of the first opening and closing member and protruding from the outer peripheral surface; a second protruding member attached to the outer peripheral surface of the second opening and closing member and protruding from the outer peripheral surface; A boarding / removing plate removing jig according to claim 1 or 2.   4. The boarding / removing plate removing jig according to claim 3, wherein the first projecting member and the second projecting member are coated with a non-slip member at least in a region where the operator's hand contacts when gripping the operator.

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