jig and fixture for wear detection

Abstract

To provide a jig for easily checking the wear status of handrail guide rails. [Solution] The wear determination jig 1 is a wear determination jig 1 for the handrail guide rail 110 of a passenger conveyor. The wear determination jig 1 comprises a first surface 11 and a second surface 12. The second surface 12 faces the first surface 11. The first opening 10 is defined by the first end 11a of the first surface 11 and the second end 12a of the second surface 12. The distance H1 from the first end 11a to the second end 12a is a reference value for determining the wear status of the handrail guide rail 110.

Description

Technical Field

[0001] The present disclosure relates to a wear determination jig and a jig.

Background Art

[0002] Conventionally, in a passenger conveyor such as an escalator, a handrail guide rail to which a handrail is attached is known (see, for example, Japanese Patent Application Laid-Open No. 2022-159614).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when inspecting the handrail guide rail, when checking the wear condition of the handrail guide rail, the workability is poor when using a steel ruler or calipers.

[0005] The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a wear determination jig that can easily check the wear condition of a handrail guide rail.

Means for Solving the Problems

[0006] The wear determination jig according to the present disclosure is a wear determination jig for a handrail guide rail of a passenger conveyor. The wear determination jig includes a first surface and a second surface. The second surface faces the first surface. A first opening is defined by a first end portion of the first surface and a second end portion of the second surface. The distance from the first end portion to the second end portion is a reference value for determining the wear condition of the handrail guide rail.

[0007] The jig according to the present disclosure includes a pair of the above wear determination jigs.

Effects of the Invention

[0008] According to the above, a jig for determining wear can be easily obtained to check the wear status of the handrail guide rail. [Brief explanation of the drawing]

[0009] [Figure 1] This is a diagram showing the configuration of a passenger conveyor according to Embodiment 1. [Figure 2] This is a schematic cross-sectional view of the handrail guide rail at line segment II-II in Figure 1. [Figure 3] This is a perspective view of a jig for determining wear on the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 4] This is a side view of a jig for determining wear on the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 5] This is a side view showing the operation of a jig for determining wear on the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 6] This is a side view of a modified example 1 of the jig for determining wear of the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 7] This is a side view of a modified example 2 of the jig for determining wear of the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 8] This is a side view of a modified example 3 of the jig for determining wear of the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 9] This is a side view of a modified example 4 of the jig for determining wear of the handrail guide rail of a passenger conveyor according to Embodiment 1. [Figure 10] This is a side view showing the operation of the jig for the handrail guide rail of a passenger conveyor according to Embodiment 2. [Modes for carrying out the invention]

[0010] Embodiments of the present disclosure will be described below. Unless otherwise specified, the same or corresponding parts in the following drawings will be given the same reference numerals, and their descriptions will not be repeated.

[0011] Embodiment 1. <Configuration of the passenger conveyor> Figure 1 is a diagram showing a passenger conveyor according to Embodiment 1. The passenger conveyor is, for example, used as an escalator 100. The escalator 100 spans the upper floor 101 and the lower floor 102 of a building. The upper floor entrance / exit 103 of the escalator 100 is positioned adjacent to the floor surface of the upper floor 101. The lower floor entrance / exit 104 of the escalator 100 is positioned adjacent to the floor surface of the lower floor 102.

[0012] The escalator 100 comprises a main frame 105, a drive unit 106a, a pair of step chains 106b, a number of steps 108, a pair of railings 109, a pair of handrail guide rails 110, and a pair of handrails 107. In Figure 1, one of each of the step chains 106b, railings 109, handrail guide rails 110, and handrails 107 is shown.

[0013] The main frame 105 spans the upper floor 101 and the lower floor 102. An upper machine room is formed in the portion of the main frame 105 adjacent to the upper floor 101. The drive unit 106a is located in the upper machine room. Power is generated when the drive unit 106a is driven. The drive unit 106a has a motor and a reduction gear. The drive unit 106a is driven by a control device (not shown).

[0014] A pair of step chains 106b are arranged one on each side in the width direction of the main frame 105. The step chains 106b are located inside the main frame 105. Power generated by the drive unit 106a is transmitted to the step chains 106b. As power is transmitted to the step chains 106b, the step chains 106b move in a circulating motion.

[0015] The plurality of steps 108 are attached to the step chain 106b. The plurality of steps 108 are arranged side by side along the step chain 106b. Therefore, the plurality of steps 108 are arranged in a circular pattern. As the step chain 106b moves in a circular motion, the plurality of steps 108 move in a circular motion. Also, the plurality of steps 108 are arranged across the upper floor boarding and alighting opening 103 and the lower floor boarding and alighting opening 104. Therefore, as the plurality of steps 108 move in a circular motion, each of the plurality of steps 108 moves between the upper floor boarding and alighting opening 103 and the lower floor boarding and alighting opening 104.

[0016] A pair of handrails 109 are arranged one on each side in the width direction of the main frame 105. The handrails 109 are erected on the main frame 105.

[0017] A pair of handrail guide rails 110 are arranged one on each side in the width direction of the main frame 105. The handrail guide rails 110 are arranged across the main frame 105 and the handrails 109. Also, the handrail guide rails 110 are formed in a circular shape. Also, the handrail guide rails 110 are arranged across the upper floor boarding and alighting opening 103 and the lower floor boarding and alighting opening 104.

[0018] A pair of handrails 107 are arranged one on each side in the width direction of the main frame 105. Each of the pair of handrails 107 is attached to the handrail guide rail 110. That is, the handrails 107 are arranged across the upper floor boarding and alighting opening 103 and the lower floor boarding and alighting opening 104.

[0019] The handrail 107 is movable with respect to the handrail guide rail 110. Also, the handrail 107 is adapted to move in a circular motion together with the step chain 106b. Therefore, as the step chain 106b moves in a circular motion, the handrail 107 moves in a circular motion together with the steps 108.

[0020] Figure 2 is a schematic cross-sectional view of the handrail guide rail 110 along line segment II-II in Figure 1. The handrail 107 includes a handrail 107a for the outward journey and a handrail 107b for the return journey. The handrail 107a for the outward journey is the portion above the railing 109. The handrail 107a for the return journey is the portion below the railing 109.

[0021] The handrail guide rail 110 includes a handrail guide rail 110a for the outbound journey and a handrail guide rail 110b for the return journey. The outbound handrail 107a is attached to the outbound handrail guide rail 110a. In other words, the outbound handrail guide rail 110a is the part that is above the railing 109. The return handrail 107b is attached to the return handrail guide rail 110b. In other words, the return handrail guide rail 110b is the part that is below the railing 109. In this way, each of the handrail 107 and the handrail guide rail 110 is inverted vertically at the upper floor entrance / exit 103 and the lower floor entrance / exit 104, respectively.

[0022] As shown in Figure 2, a portion of the handrail 107b on the return route and a portion of the handrail guide rail 110b for the return route are located inside the main frame 105.

[0023] The handrail guide rail 110 has a first guide surface 111 and a second guide surface 112. The second guide surface 112 is located opposite the first guide surface 111. When the handrail 107 is attached to the handrail guide rail 110, the first guide surface 111 and the second guide surface 112 face the handrail 107. As shown in Figure 2, the second guide surface 112 of the handrail guide rail 110a for the outward journey faces the second guide surface 112 of the handrail guide rail 110b for the return journey.

[0024] The handrail 107 moves relative to the handrail guide rail 110. When the escalator 100 is used for a long period of time, the first guide surface 111 and the second guide surface 112 wear down. Therefore, maintenance workers need to periodically check the wear condition of the handrail guide rail 110.

[0025] Maintenance workers can easily remove the handrail 107 attached to the handrail guide rail 110 to check the wear condition of the handrail guide rail 110. However, the wear condition of the handrail guide rail 110 is not uniform. In particular, if the handrail guide rail 110 is worn evenly, it is difficult to check the wear condition of the handrail guide rail 110.

[0026] Furthermore, the handrail guide rail 110b on the return route is located inside the main frame 105. Specifically, the handrail guide rail 110b on the return route is located inside the inner deck of the main frame 105. When checking the wear condition of the handrail guide rail 110 located in such a narrow space, using a steel ruler or calipers makes the work difficult, and it is not easy to check the wear condition of the handrail guide rail 110.

[0027] <Configuration of the jig for wear detection> Figure 3 is a perspective view of the wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. Figure 4 is a side view of the wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. The wear detection jig 1 shown in Figures 3 and 4 is a wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor, and is used when checking the wear status of the handrail guide rail 110 of an escalator 100. The wear detection jig 1 comprises a first surface 11, a second surface 12, and a first bottom surface 16.

[0028] The second surface 12 faces the first surface 11. The first base surface 16 is connected to both the first surface 11 and the second surface 12. The first surface 11, the second surface 12, and the first base surface 16 form an internal space.

[0029] Let the directions parallel to the first face 11 be the x and y directions. The y direction is perpendicular to the x direction. Let the direction perpendicular to the first face 11 be the z direction. That is, the z direction is perpendicular to both the x and y directions.

[0030] In the x-direction, the first end 11a of the first surface 11 is located opposite the portion (corner) where the first surface 11 connects to the first base surface 16. In the x-direction, the second end 12a of the second surface 12 is located opposite the portion (corner) where the second surface 12 connects to the first base surface 16.

[0031] The first opening 10 is defined by the first end 11a of the first surface 11 and the second end 12a of the second surface 12. The first opening 10 communicates with the internal space formed by the first surface 11, the second surface 12, and the first bottom surface 16. Thus, as shown in Figure 2, the shape of the wear determination jig 1 viewed from the y direction is, for example, C-shaped.

[0032] Figure 5 is a side view showing the operation of the wear determination jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. To check the wear status of the handrail guide rail 110, the wear determination jig 1 is moved along the x-direction as shown in Figure 5 to check whether the handrail guide rail 110 at one end is inserted into the first opening 10.

[0033] If the handrail guide rail 110 is unused (i.e., the first guide surface 111 and the second guide surface 112 are not worn), the thickness T1 of the handrail guide rail 110 (distance from the first guide surface 111 to the second guide surface 112) is 6.0 mm.

[0034] On the other hand, if the first guide surface 111 and the second guide surface 112 are worn down and the thickness T1 of the handrail guide rail 110 is below the standard value, then the handrail guide rail 110 needs to be inspected in detail. The standard value for determining the wear status of the handrail guide rail 110 is, for example, 3.0 mm. In other words, the thickness T1 of the handrail guide rail 110 is checked using the wear determination jig 1 to see if it is 3.0 mm or less.

[0035] Here, a feature of the wear determination jig 1 according to this embodiment 1 is that the distance H1 from the first end 11a to the second end 12a is a reference value for determining the wear status of the handrail guide rail 110.

[0036] If the thickness T1 of the handrail guide rail 110 is greater than the standard value, the handrail guide rail 110 will not pass through the first opening 10. On the other hand, if the thickness T1 of the handrail guide rail 110 is less than or equal to the standard value, the handrail guide rail 110 will pass through the first opening 10. In this way, by using the wear determination jig 1 according to this embodiment 1, the wear status of the handrail guide rail 110 can be easily checked. In other words, it is possible to determine whether to inspect the handrail guide rail 110 in detail.

[0037] The material constituting the wear detection jig 1 may be resin or metal. The wear detection jig 1 may also be transparent. In this way, if the thickness T1 of the handrail guide rail 110 is below the standard value, it becomes possible to visually confirm that the handrail guide rail 110 is positioned in the internal space.

[0038] As shown in Figures 1 and 2, a through hole 17 is provided in the second surface 12. For example, a string can be inserted through the through hole 17. This string can be wrapped around, for example, the wrist or arm of a maintenance worker. In this way, the wear determination jig 1 can be prevented from falling when checking the wear condition of the handrail guide rail 110.

[0039] Figure 6 is a side view of a modified example 1 of the wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. The wear detection jig 1 shown in Figure 6 basically has the same configuration as the wear detection jig 1 shown in Figures 3 and 4 and can obtain the same effect, but differs in that the wear detection jig 1 is equipped with a handle portion 18.

[0040] The wear detection jig 1 includes a second bottom surface 19. The second bottom surface 19 is located on the opposite side of the first bottom surface 16 in the components that make up the first bottom surface 16. The handle portion 18 is connected to the second bottom surface 19. In this way, even if the wear detection jig 1 is small, the workability of the wear detection jig 1 is improved by allowing the maintenance worker to grip the handle portion 18.

[0041] Figure 7 is a side view of a modified example 2 of the wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. The wear detection jig 1 shown in Figure 7 basically has the same configuration as the wear detection jig 1 shown in Figures 3 and 4 and can obtain the same effect, but it differs in that it can be used to confirm whether the thickness T1 of the handrail guide rail 110 is below the replacement standard value. Specifically, the wear detection jig 1 comprises a third surface 13, a fourth surface 14, and a second bottom surface 19.

[0042] The fourth surface 14 faces the third surface 13. The second bottom surface 19 is located opposite the first bottom surface 16 in the member that constitutes the first bottom surface 16. The second bottom surface 19 is connected to the third surface 13 and the fourth surface 14. The third surface 13, the fourth surface 14, and the second bottom surface 19 form an internal space.

[0043] In the x-direction, the third end 13a of the third surface 13 is located opposite the portion (corner) where the third surface 13 connects to the second base surface 19. In the x-direction, the fourth end 14a of the fourth surface 14 is located opposite the portion (corner) where the fourth surface 14 connects to the second base surface 19.

[0044] The second opening 20 is defined by the third end 13a of the third surface 13 and the fourth end 14a of the fourth surface 14. The second opening 20 communicates with the internal space formed by the third surface 13, the fourth surface 14, and the second bottom surface 19.

[0045] If the first guide surface 111 and the second guide surface 112 are worn down and the thickness T1 of the handrail guide rail 110 is below the replacement standard value, the handrail guide rail 110 needs to be replaced. The replacement standard value for determining whether the handrail guide rail 110 needs to be replaced is smaller than the standard value, for example, 2.5 mm. In other words, the thickness T1 of the handrail guide rail 110 is checked to see if it is 2.5 mm or less using the wear determination jig 1.

[0046] Therefore, the distance H2 from the third end 13a to the fourth end 14a may be the replacement standard value for the handrail guide rail 110. If the thickness T1 of the handrail guide rail 110 is greater than the replacement standard value, the handrail guide rail 110 will not pass through the second opening 20. On the other hand, if the thickness T1 of the handrail guide rail 110 is less than or equal to the replacement standard value, the handrail guide rail 110 will pass through the second opening 20. In this way, the wear condition of the handrail guide rail 110 can be easily checked by using the wear determination jig 1 according to this embodiment 1. In other words, it is possible to determine whether the handrail guide rail 110 needs to be replaced.

[0047] Figure 8 is a side view of a modified example 3 of the wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. The wear detection jig 1 shown in Figure 8 has basically the same configuration as the wear detection jig 1 shown in Figures 3 and 4 and can obtain the same effect, but differs in that the wear detection jig 1 has a fifth surface 15.

[0048] As shown in Figure 8, the fifth surface 15 is located on the same plane as the first surface 11. In other words, the fifth surface 15 is connected to the first surface 11. The members constituting the fifth surface 15 may be different from the members constituting the first surface 11, or they may be the same as the members constituting the first surface 11, as shown in Figure 8. If the members constituting the fifth surface 15 are the same as the members constituting the first surface 11, the first end 11a is the foot of the perpendicular drawn from the second end 12a to the first surface 11.

[0049] In the x-direction, the fifth end 15a of the fifth surface 15, as viewed from the first end 11a, is located opposite the portion (corner) where the first surface 11 connects to the first base surface 16. In other words, the distance in the x-direction from the first base surface 16 to the fifth end 15a is greater than the distance in the x-direction from the first base surface 16 to the second end 12a.

[0050] When checking the wear condition of the handrail guide rail 110, the handrail guide rail 110 can be moved while its first guide surface 111 is in contact with the fifth surface 15. In other words, the fifth surface 15 guides the handrail guide rail 110 in the y direction. In this way, worn areas of the handrail guide rail 110 can be easily identified in the y direction.

[0051] Figure 9 is a side view of a modified example 4 of the wear detection jig 1 for the handrail guide rail 110 of a passenger conveyor according to Embodiment 1. The wear detection jig 1 shown in Figure 9 has basically the same configuration as the wear detection jig 1 shown in Figures 3 and 4 and can obtain the same effect, but differs in that it has a pair of restraining surfaces 21 and 22.

[0052] Specifically, the wear determination jig 1 comprises a pair of restraining surfaces 21 and 22 and a third bottom surface 23. The third bottom surface 23 is connected to the first opening 10. The third bottom surface 23 is perpendicular to the x-direction. The pair of restraining surfaces 21 and 22 face each other in the z-direction. The pair of restraining surfaces 21 and 22 are connected to the third bottom surface 23. An internal space is formed by the pair of restraining surfaces 21 and 22 and the third bottom surface 23.

[0053] In the x-direction, the end portion 21a of the restraining surface 21 is located opposite the portion (corner) where the restraining surface 21 connects to the third bottom surface 23. In the x-direction, the end portion 22a of the restraining surface 22 is located opposite the portion (corner) where the restraining surface 22 connects to the third bottom surface 23.

[0054] The third opening 30 is defined by the end 21a of the restraining surface 21 and the end 22a of the restraining surface 22. The third opening 30 communicates with the internal space formed by the pair of restraining surfaces 21, 22 and the third bottom surface 23.

[0055] The distance H3 from end 21a to end 22a is greater than or equal to the thickness T1 of the handrail guide rail 110 (the distance from the first guide surface 111 to the second guide surface 112). In other words, the distance H3 from end 21a to end 22a may be 6.0 mm or more. In this way, the handrail guide rail 110 is inserted through the third opening 30.

[0056] When checking the wear status of the handrail guide rail 110, the pair of restraining surfaces 21 and 22 can clamp the handrail guide rail 110 in the z direction while allowing it to move in the y direction. In other words, the pair of restraining surfaces 21 and 22 restrict the movement of the handrail guide rail 110 in the z direction. Because the movement of the handrail guide rail 110 is restricted in the z direction, the workability of the wear determination jig 1 is improved.

[0057] <Effects and Effects> The wear determination jig 1 according to this disclosure is a wear determination jig 1 for the handrail guide rail 110 of a passenger conveyor. The wear determination jig 1 comprises a first surface 11 and a second surface 12. The second surface 12 faces the first surface 11. A first opening 10 is defined by the first end 11a of the first surface 11 and the second end 12a of the second surface 12. The distance H1 from the first end 11a to the second end 12a is a reference value for determining the wear condition of the handrail guide rail 110.

[0058] In this way, the wear condition of the handrail guide rail 110 can be easily determined by using the wear determination jig 1 to check whether the handrail guide rail 110 can be inserted into the first opening 10.

[0059] According to the above wear determination jig 1, the standard value is 3.0 mm. In this way, it is possible to confirm whether the thickness T1 of the handrail guide rail 110 is 3.0 mm or less using the wear detection jig 1.

[0060] The above-described wear determination jig 1 comprises a third surface 13 and a fourth surface 14. The fourth surface 14 faces the third surface 13. The second opening 20 is defined by the third end 13a of the third surface 13 and the fourth end 14a of the fourth surface 14. The distance H2 from the third end 13a to the fourth end 14a is the reference value for replacing the handrail guide rail 110.

[0061] In this way, by using the wear detection jig 1 to check whether the handrail guide rail 110 can be inserted into the second opening 20, it is possible to easily determine whether the handrail guide rail 110 needs to be replaced.

[0062] According to the above wear determination jig 1, the replacement standard value is 2.5 mm. In this way, it is possible to confirm whether the thickness T1 of the handrail guide rail 110 is 2.5 mm or less using the wear detection jig 1.

[0063] According to the above-described wear determination jig 1, a through hole 17 is provided on the second surface 12. A string can be inserted through the through hole 17.

[0064] In this way, by wrapping the string around the wrist or arm of the maintenance worker, it is possible to prevent the wear assessment jig 1 from falling when checking the wear condition of the handrail guide rail 110.

[0065] The above-described wear determination jig 1 includes a fifth surface 15. The fifth surface 15 is connected to the first surface 11. The fifth surface 15 guides the handrail guide rail 110.

[0066] In this way, worn areas of the handrail guide rail 110 can be easily identified.

[0067] The above-described wear determination jig 1 includes a pair of restraining surfaces 21 and 22. The pair of restraining surfaces 21 and 22 sandwich the handrail guide rail 110.

[0068] In this way, the movement of the handrail guide rail 110 is restricted, thereby improving the workability of the wear detection jig 1.

[0069] Embodiment 2. <Jig configuration> Figure 10 is a side view showing the operation of the jig 3 of the handrail guide rail 110 of the passenger conveyor according to Embodiment 2. As shown in Figure 10, the jig 3 comprises a pair of wear determination jigs 1a and 1b according to Embodiment 1, and a biasing mechanism 2. Each of the wear determination jigs 1a and 1b according to Embodiment 2 has the same configuration as the wear determination jig 1 according to Embodiment 2.

[0070] The biasing mechanism 2 connects a pair of wear detection jigs 1a and 1b via a support member. The support member is connected, for example, to a member constituting the second surface 12. The pair of wear detection jigs 1a and 1b are arranged so that their respective first openings 10 face each other. The biasing mechanism 2 is configured to pull the pair of wear detection jigs 1a and 1b toward each other in the x-direction.

[0071] Specifically, the biasing mechanism 2 includes a sliding member and an elastic member. The elastic member is disposed inside the sliding member. The sliding member is slidable in the x-direction. The elastic member is, for example, a member that can be stretched along the x-direction, such as a spring.

[0072] Using the jig 3 according to this embodiment 1, it is possible to confirm whether the handrail guide rail 110 at one end is inserted into the first opening 10 of the wear determination jig 1a, and at the same time, whether the handrail guide rail 110 at the other end is inserted into the first opening 10 of the wear determination jig 1b. In other words, by using the jig 3, the wear condition at both ends of the handrail guide rail 110 can be checked simultaneously.

[0073] <Effects and Effects> The jig 3 according to this disclosure comprises a pair of the above-mentioned wear determination jigs 1a and 1b.

[0074] In this way, the wear condition at both ends of the handrail guide rail 110 can be checked simultaneously.

[0075] The jig 3 described above includes a biasing mechanism 2. The biasing mechanism 2 pulls a pair of wear determination jigs 1a and 1b toward each other.

[0076] In this way, the wear condition at both ends of the handrail guide rail 110 can be easily checked simultaneously.

[0077] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of this disclosure is indicated by the claims rather than the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended.

[0078] The various aspects of this disclosure are summarized below as an appendix. (Note 1) A jig for determining wear on the handrail guide rails of a passenger conveyor, Page 1 and, It comprises a second surface facing the first surface, The first opening is defined by the first end of the first surface and the second end of the second surface. A jig for determining wear, wherein the distance from the first end to the second end is a reference value for determining the wear status of the handrail guide rail. (Note 2) The aforementioned reference value is 3.0 mm, as described in Appendix 1, for the wear determination jig. (Note 3) Page 3, It comprises a fourth surface facing the third surface, The second opening is defined by the third end of the third surface and the fourth end of the fourth surface. A wear determination jig as described in Appendix 1 or Appendix 2, wherein the distance from the third end to the fourth end is the replacement standard value for the handrail guide rail. (Note 4) The replacement reference value is smaller than the reference value, as described in Appendix 3, for the wear determination jig. (Note 5) The replacement reference value is 2.5 mm, as described in Appendix 4, for the wear determination jig. (Note 6) The second surface is provided with through holes, The aforementioned through hole is a jig for determining wear as described in any one of Appendix 1 to Appendix 5, through which a string can be inserted. (Note 7) A wear determination jig according to any one of the appendices 1 to 6, comprising a fifth surface connected to the first surface and guiding the handrail guide rail. (Note 8) A wear determination jig according to any one of the appendices 1 to 7, comprising a pair of restraining surfaces that clamp the aforementioned handrail guide rail. (Note 9) A jig comprising a pair of wear determination jigs described in any one of the items from Appendix 1 to Appendix 8. (Note 10) The jig described in Appendix 9, comprising a biasing mechanism that causes a pair of wear determination jigs to pull on each other. [Explanation of Symbols]

[0079] 1 Wear detection jig, 1a Wear detection jig, 1b Wear detection jig, 2 Biasing mechanism, 3 Jig, 10 First opening, 11 First surface, 11a First end, 12 Second surface, 12a Second end, 13 Third surface, 13a Third end, 14 Fourth surface, 14a Fourth end, 15 Fifth surface, 15a Fifth end, 16 First bottom surface, 17 Through hole, 18 Handle section, 19 Second bottom surface, 20 Second opening, 21 Restraining surface, 21a End, 22 Restraining surface, 22a End, 23 Third bottom surface, 30 Third opening, 100 Escalator, 101 Upper floor side floor, 102 Lower floor side floor, 103 Upper floor entrance / exit, 104 Lower floor entrance / exit, 105 Main frame, 106a Drive unit, 106b Step chain, 107 Handrail, 107a Handrail, 107b Handrail, 108 Step, 109 Basin, 110 Handrail guide rail, 110a Handrail guide rail, 110b Handrail guide rail, 111 First guide surface, 112 Second guide surface, H1 Distance, H2 Distance, H3 Distance.

Claims

1. A jig for determining wear on the handrail guide rails of a passenger conveyor, Page 1 and, It comprises a second surface facing the first surface, The first opening is defined by the first end of the first surface and the second end of the second surface. A jig for determining wear, wherein the distance from the first end to the second end is a reference value for determining the wear condition of the handrail guide rail.

2. The wear determination jig according to claim 1, wherein the reference value is 3.0 mm.

3. Page 3, It comprises a fourth surface facing the third surface, The second opening is defined by the third end of the third surface and the fourth end of the fourth surface. The wear determination jig according to claim 1, wherein the distance from the third end to the fourth end is the replacement reference value for the handrail guide rail.

4. The wear determination jig according to claim 3, wherein the replacement reference value is smaller than the reference value.

5. The wear determination jig according to claim 4, wherein the replacement reference value is 2.5 mm.

6. The second surface is provided with through holes, The wear determination jig according to claim 1, wherein the through hole through which a string can be inserted.

7. The wear determination jig according to claim 1, further comprising a fifth surface connected to the first surface and guiding the handrail guide rail.

8. The wear determination jig according to claim 1, comprising a pair of restraining surfaces that clamp the aforementioned handrail guide rail.

9. A jig comprising a pair of wear determination jigs according to any one of claims 1 to 8.

10. The jig according to claim 9, further comprising a biasing mechanism that causes a pair of wear determination jigs to pull on each other.

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