Curved rail switch operation check jig

Abstract

To provide a curved rail switch operation confirmation jig that can easily confirm an operation of a curved rail switch.SOLUTION: A curved rail switch operation confirmation jig 40 includes a lifting rod 41, a contact member 43, and a cleat holding part 50. The lifting rod 41 includes a portion 41a and a portion 41c. The contact member 43 includes a contact surface 43a that contacts a cleat 24 provided on a tread 22 of a step 20 and is provided on the portion 41a. The cleat holding part 50 holds the cleat 24. A connecting member 70 connects the portion 41c and the cleat holding part 50 to each other.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a curved rail switch operation checking jig. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2011-116495 (Patent Document 1) discloses an escalator equipped with a curved rail switch (CRS) as a safety device. When a step reaches a curved section connecting the inclined and horizontal sections of the escalator, a shoe or other object may get caught between adjacent steps, causing the step to lift up. The curved rail switch detects this and stops the step from moving (the escalator's operation). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-116495 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a curved rail switch operation checking tool that can easily check the operation of a curved rail switch. [Means for solving the problem]

[0005] The curved rail switch operation verification jig of the present disclosure includes a lifting rod, a contact member, and a cleat holding portion. The lifting rod includes a first portion and a second portion spaced apart from the first portion in the longitudinal direction of the lifting rod. The contact member includes a contact surface that contacts a cleat provided on a step tread and is provided on the first portion of the lifting rod. The cleat holding portion holds the cleat. The connecting member connects the second portion of the lifting rod and the cleat holding portion to each other. [Effects of the Invention]

[0006] According to the curved rail switch operation checking jig of the present disclosure, the operation of a curved rail switch can be easily checked. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic side view of an escalator according to an embodiment. [Figure 2] 1 is a schematic partially enlarged perspective view of an escalator according to an embodiment of the present invention; [Figure 3] 1 is a schematic partially enlarged side view of an escalator according to an embodiment of the present invention. [Figure 4] 1 is a schematic side view of a curved rail switch operation checking jig according to an embodiment of the present invention. [Figure 5] FIG. 2 is a partially enlarged side view of the curved rail switch operation checking jig according to the embodiment. [Figure 6] FIG. 2 is a partially enlarged front view of the curved rail switch operation checking jig of the embodiment. [Figure 7] FIG. 10 is a partially enlarged side view of a curved rail switch operation checking jig according to a modified example of the embodiment. [Figure 8] FIG. 10 is a partially enlarged front view of a curved rail switch operation checking jig according to a modified example of the embodiment. [Figure 9] FIG. 2 is a partially enlarged front view of the curved rail switch operation checking jig of the embodiment. [Figure 10] FIG. 10 is a partially enlarged perspective view of a curved rail switch operation checking jig according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described. Note that the same reference numerals are used to designate the same components, and the description thereof will not be repeated.

[0009] The curved rail switch operation checking jig 40 of the embodiment shown in Figures 4 to 9 is a jig used to check the operation of the curved rail switch 30 (see Figures 1 and 3). The curved rail switch 30 to which the curved rail switch operation checking jig 40 is applied and the escalator 1 equipped with the curved rail switch 30 will be described with reference to Figures 1 to 3.

[0010] The escalator 1 includes a truss 2, an upper sprocket 3, a lower sprocket 4, steps 20, step rails 5, a follower rail 6, a step chain 7, a drive unit 8, a balustrade 10, a moving handrail 11, a curved rail switch 30, and a control unit 35.

[0011] The truss 2 houses an upper sprocket 3, a lower sprocket 4, a step rail 5, a follower rail 6, a step chain 7, a drive unit 8, a curved rail switch 30, and a control unit 35. The upper sprocket 3 is installed on the upper floor portion of the truss 2. The lower sprocket 4 is installed on the lower floor portion of the truss 2. The step chain 7 is wound around the upper sprocket 3 and the lower sprocket 4. The drive unit 8 drives the step chain 7. As the step chain 7 moves, the steps 20 circulate between the upper and lower floors.

[0012] The step 20 includes a frame 21, a step 22, a riser 23, a cleat 24, a step shaft 25, a step roller 26, and a follower roller 28. The step 22 is fixed to the top of the frame 21. The riser 23 is fixed to the rear side of the frame 21. In a side view of the step 20, the riser 23 has a convex arc shape. The cleats 24 are provided on the step 22 and the riser 23. A groove is formed between adjacent cleats. The step shaft 25 is fixed to the front end of the frame 21. The step roller 26 is rotatably attached to the step shaft 25. The follower roller 28 is rotatably attached to the lower rear end of the frame 21. The step roller 26 is guided by the step rail 5. The follower roller 28 is guided by the follower rail 6. In this way, the trajectory and posture of the step 20 are maintained.

[0013] A balustrade 10 is provided above the truss 2. The balustrade 10 extends in the longitudinal direction of the truss 2. A movable handrail 11 is provided on the balustrade 10. The movable handrail 11 moves cyclically between the upper floor and the lower floor. The driving device 8 may further drive the movable handrail 11. The movable handrail 11 moves in conjunction with the steps 20.

[0014] The escalator 1 is divided into five sections: a lower horizontal section 15, a lower curved section 16, a middle inclined section 17, an upper curved section 18 and an upper horizontal section 19.

[0015] The curved rail switch 30 is one of the safety devices of the escalator 1. When the steps 20 run normally, the difference in height between adjacent steps 20 at the lower curved portion 16 and the upper curved portion 18 is small. However, sometimes the shoes of a passenger on the escalator 1 get caught between adjacent steps 20. When this happens, the difference in height between adjacent steps 20 at the lower curved portion 16 and the upper curved portion 18 does not become small, and one of the adjacent steps 20 rises up. The curved rail switch 30 detects this step 20 rising up.

[0016] Specifically, the curved rail switch 30 is provided on the lower curved portion 16 and the upper curved portion 18. The curved rail switch 30 includes an operating rail 31 and a sensor 32. The operating rail 31 is disposed above the following rail 6. The sensor 32 detects movement of the operating rail 31. The sensor 32 is communicatively connected to the control device 35. When the step 20 lifts up, the following roller 28 lifts up from the following rail 6, causing the operating rail 31 to move upward. The sensor 32 outputs a step lift-up signal to the control device 35 when the operating rail 31 moves. The sensor 32 is, for example, a microswitch.

[0017] The control device 35 controls the operation of the escalator 1. Specifically, the control device 35 controls the drive device 8 and the like. For example, when the control device 35 receives a step lift-up signal from the curved rail switch 30 (sensor 32), it stops the drive device 8. In this way, when the curved rail switch 30 detects abnormal running of the step 20, the step 20 stops. The control device 35 is a computer that includes, for example, an arithmetic device such as a CPU (Central Processing Unit) and a storage device such as a magnetic memory or semiconductor memory. The storage device stores, for example, a program for controlling the escalator 1 and data related to the status of the escalator 1.

[0018] 4 to 10, the configuration of the curved rail switch operation checking jig 40 will be described. The curved rail switch operation checking jig 40 includes a lifting rod 41, a contact member 43, a cleat holding portion 50, and a connecting member 70.

[0019] Referring to FIG. 4, lifting rod 41 is formed of a metal such as stainless steel. Lifting rod 41 includes portions 41a, 41b, and 41c. Portions 41a, 41b, and 41c are spaced apart from one another in the longitudinal direction of lifting rod 41. Portion 41a is, for example, a first end of lifting rod 41. Portion 41b is, for example, a second end of lifting rod 41 opposite the first end. Portion 41c is located between portions 41a and 41b. Portion 41c is a central portion of lifting rod 41 in the longitudinal direction of lifting rod 41. Lifting rod 41 includes a handle 42. Handle 42 is located on the opposite side of portion 41c from portion 41a (closer to portion 41b than portion 41c). Lifting rod 41 includes a ring member 49 to which a connecting member 70 is hooked.

[0020] As shown in FIGS. 4 to 6 , the contact member 43 is provided on the portion 41 a of the lifting rod 41. The contact member 43 includes a contact surface 43 a that contacts the cleat 24 provided on the tread 22 of the step 20. The contact surface 43 a contacts, for example, the cleat 24 provided on the tread 22 in a region close to the riser 23 of the adjacent step 20 (the region of the tread 22 close to the step shaft 25, or the front region of the tread 22). As shown in FIG. 6 , the cleat 24 includes a side surface 24 a, a side surface 24 b opposite to the side surface 24 a, and a top portion 24 t. The side surfaces 24 a and 24 b protrude from the tread 22. The side surfaces 24 a and 24 b are connected to the tread 22 and the top portion 24 t, respectively. The contact surface 43 a of the contact member 43 contacts the top portion 24 t of the cleat 24.

[0021] The contact surface 43a is formed of a material, such as rubber, that is softer than the lifting rod 41. As in this embodiment, the entire contact member 43 may be formed of a material that is softer than the lifting rod 41. As shown in Figures 4 and 5, when the curved rail switch operation checking jig 40 is used to lift the steps 20, in a cross section defined by the longitudinal direction of the lifting rod 41 and the longitudinal direction of the connecting member 70 (a cross section whose normal is the arrangement direction of the cleats 24, a cross section along the plane of each of Figures 4 and 5), the contact surface 43a has a semicircular shape.

[0022] As shown in Figures 7 and 8, in a modified example of this embodiment, the curved rail switch operation checking jig 40 may further include a rotary joint 44 connecting the portion 41a of the lifting rod 41 and the contact member 43 to each other.

[0023] The rotary joint 44 includes, for example, a support member 45 and a pin 48. The support member 45 supports the contact member 43. The support member 45 is formed of a metal such as stainless steel. The support member 45 includes a base plate 46 and a protruding piece 47. The base plate 46 includes a front surface and a back surface opposite the front surface. The contact member 43 is fixed to the back surface of the base plate 46. The protruding piece 47 protrudes from the front surface of the base plate 46. A hole 47h is formed in the protruding piece 47. A hole 41h is formed in the portion 41a of the lifting rod 41. The pin 48 is inserted into the holes 41h and 47h.

[0024] 7 and 8, the contact surface 43a may be provided with a recess 47d into which the cleat 24 fits. The contact surface 43a of the contact member 43 contacts the side surfaces 24a and 24b of the cleat 24 in addition to the top 24t of the cleat 24.

[0025] 4 and 9, the cleat holder 50 holds the cleat 24 provided on the tread 22. The cleat holder 50 holds, for example, the cleat 24 provided in the region of the tread 22 that is close to the riser 23 (the rear region of the tread 22). Referring to FIG. 9, the cleat holder 50 includes, for example, a pair of clamping members 51, 52, a pin 58, a guide pin 65, a locking portion 60, and a ring member 66.

[0026] The pair of clamping members 51, 52 clamp the cleat 24 provided on the tread 22.

[0027] The clamping member 51 includes a clamping portion 51a, an end portion 51b opposite the clamping portion 51a, a central portion 51c located between the clamping portion 51a and the end portion 51b, and an anti-slip portion 55. The clamping portion 51a contacts the side surface 24a of the cleat 24. A hole 51e is provided in the central portion 51c. A hole 51f is provided in the end portion 51b. A hole 51g is provided in the portion of the clamping member 51 between the end portion 51b and the central portion 51c.

[0028] The clamping member 52 includes a clamping portion 52a, an end portion 52b opposite the clamping portion 52a, a central portion 52c located between the clamping portion 52a and the end portion 52b, and an anti-slip portion 56. The clamping portion 52a contacts the side surface 24b of the cleat 24. A hole (not shown) is formed in the central portion 52c. A female threaded hole 52f is formed in the end portion 52b. A hole 52g is formed in the portion of the clamping member 52 between the end portion 52b and the central portion 52c.

[0029] The clamping members 51 and 52 intersect with each other at the center 51c of the clamping member 51 and the center 52c of the clamping member 52. A pin 58 is inserted into a hole 51e of the clamping member 51 and a hole (not shown) in the center 52c of the clamping member 52. The clamping members 51 and 52 open and close around the pin 58. The pin 58 is, for example, an eccentric pin 59. Therefore, the clamping portion 51a moves in the normal direction of the side surface 24a of the cleat 24 (the direction along the surface of the tread 22, the direction in which the cleats 24 are arranged). The clamping portion 52a moves in the normal direction of the side surface 24b of the cleat 24 (the direction along the surface of the tread 22, the direction in which the cleats 24 are arranged). A guide pin 65 is inserted into a hole 51g of the clamping member 51 and a hole 52g of the clamping member 52. The longitudinal direction of the guide pin 65 is the normal direction to the side surface 24a of the cleat 24, the normal direction to the side surface 24b of the cleat 24, the direction along the surface of the tread 22, and the arrangement direction of the cleats 24.

[0030] Anti-slip portion 55 is provided on the surface of clamping portion 51a facing clamping portion 52a. Anti-slip portion 56 is provided on the surface of clamping portion 52a facing clamping portion 51a. Anti-slip portions 55, 56 have, for example, an uneven structure. Anti-slip portions 55, 56 can prevent clamping members 51, 52 from slipping on side surfaces 24a, 24b of cleat 24 and coming off cleat 24 after clamping members 51, 52 clamp cleat 24 provided on tread 22.

[0031] The ring member 66 is fixed to, for example, a guide pin 65. A connecting member 70 is hooked onto the ring member 66.

[0032] The locking portion 60 locks the pair of clamping members 51, 52 while the pair of clamping members 51, 52 clamp the cleat 24. The locking portion 60 includes, for example, a male screw 61 and a knob 63. The male screw 61 includes a head portion 61a and a body portion 61b.

[0033] The body 61b is connected to the head 61a. A thread groove is formed on the side of the body 61b. The body 61b passes through the hole 51f and screws into the female-threaded hole 52f. The surface of the head 61a from which the body 61b protrudes contacts the end 51b of the clamping member 51. A knob 63 is formed on the head 61a. An inspection worker turns the knob 63 to open or close the pair of clamping members 51, 52. Specifically, when the inspection worker tightens the male screw 61, the pair of clamping members 51, 52 move closer to each other, and the cleat 24 attached to the tread 22 is clamped by the pair of clamping members 51, 52. When the inspection worker loosens the male screw 61, the pair of clamping members 51, 52 move away from each other, and the cleat 24 attached to the tread 22 is released from the pair of clamping members 51, 52.

[0034] 10, the cleat holding portion 50 may be a vise pliers 80. The vise pliers 80 includes, for example, clamping members 51 and 52, a pin 58, and a locking portion 60. In FIG. 10, the ring member 66 is not shown.

[0035] 4, connecting member 70 connects portion 41c of lifting rod 41 and cleat holding portion 50 to each other. Connecting member 70 is hooked to ring members 49 and 66. Connecting member 70 is, but is not limited to, a flexible, elongated member such as a rope or chain, or an extendable rod. Connecting member 70 may be detachable from lifting rod 41 and cleat holding portion 50.

[0036] An example of a method for inspecting the curved rail switch 30 of this embodiment using the curved rail switch operation checking jig 40 will be described.

[0037] The inspection worker carries the curved rail switch operation confirmation jig 40 from a storage facility (not shown) to the step 20 located at the lower curved portion 16 or the upper curved portion 18. The inspection worker attaches the cleat holding portion 50 to the cleat 24 provided on the step 22. The cleat holding portion 50 holds the cleat 24 provided in the area of ​​the step 22 close to the riser 23 (the rear area of ​​the step 22), for example.

[0038] Specifically, the inspection worker moves the cleat holding portion 50 downward toward the cleat 24, positioning the clamping portion 51a of the clamping member 51 and the clamping portion 52a of the clamping member 52 on either side of the cleat 24 attached to the tread 22. The inspection worker turns the knob 63 to tighten the male screw 61. The clamping portion 51a of the clamping member 51 moves in the normal direction to the side surface 24a of the cleat 24, and the clamping portion 52a of the clamping member 52 moves in the normal direction to the side surface 24b of the cleat 24, so that the clamping portions 51a and 52a move closer to each other. The cleat 24 attached to the tread 22 is clamped between the clamping portions 51a and 52a. The clamping portions 51a, 52a are prevented from moving away from each other by the engagement of the male screw 61 with the female threaded hole 52f and the contact of the head portion 61a with the end portion 51b of the clamping member 51. In this way, the locking portion 60 locks the pair of clamping members 51, 52 while keeping them clamping the cleat 24 provided on the tread 22.

[0039] The inspection worker brings the contact surface 43a of the contact member 43 into contact with the cleat 24 provided on the tread 22. The contact surface 43a of the contact member 43 comes into contact with the cleat 24 provided on the tread 22 in an area close to the riser 23 of the adjacent step 20 (an area of ​​the tread 22 close to the step shaft 25, or a front area of ​​the tread 22), for example.

[0040] The inspection worker uses the connecting member 70 to connect the cleat holding portion 50 to the lifting rod 41. Specifically, the cleat holding portion 50 is connected to the lifting rod 41 by passing the connecting member 70 through the ring members 49 and 66.

[0041] The inspection worker grasps the handle 42 of the lifting rod 41 and moves the lifting rod 41 upward. The lifting rod 41 and the cleat holding portion 50 are connected by a connecting member 70. If the connecting member 70 is a flexible, elongated member such as a rope or chain, or an extendable rod, the connecting member 70 will extend to its maximum length. When the inspection worker moves the lifting rod 41 upward, the rear portion of the step 20 held by the cleat holding portion 50 is lifted.

[0042] The lifting rod 41 functions as a lever with the portion 41a where the contact member 43 is provided (more precisely, the contact portion 43c between the contact member 43 and the cleat 24 provided on the tread 22) as the fulcrum, the handle 42 as the force point, and the portion 41c as the point of application. The distance between the portion 41a (more precisely, the contact portion 43c) and the handle 42 in the longitudinal direction of the lifting rod 41 is greater than the distance between the portion 41a (more precisely, the contact portion 43c) and the portion 41c in the longitudinal direction of the lifting rod 41. Therefore, a force greater than the force applied to the handle 42 by the inspection worker acts on the portion 41c. By using the curved rail switch operation confirmation jig 40, the step 20 can be lifted with less force.

[0043] Distance L1 between contact portion 43c and ring member 66 of cleat holder 50 in the direction along tread 22 may be equal to distance L2 between contact portion 43c and ring member 49 of lifting rod 41 in the longitudinal direction of lifting rod 41. Therefore, when lifting step 20 using curved rail switch operation checking jig 40, the rear portion of step 20 is lifted while rotating about contact portion 43c. Furthermore, riser 23 of step 20 has a bulging arc shape in a side view of step 20. Therefore, when lifting step 20 using curved rail switch operation checking jig 40, step 20 is prevented from colliding with adjacent steps 20.

[0044] An inspection worker uses curved rail switch operation checking jig 40 to lift the rear portion of step 20 by a predetermined height. If curved rail switch 30 is operating normally, when the rear portion of step 20 is lifted by the predetermined height, follower roller 28 comes into contact with operating rail 31 and sensor 32 outputs a step lift signal to control device 35. The inspection worker then checks whether sensor 32 outputs a step lift signal when the rear portion of step 20 is lifted by the predetermined height.

[0045] If the sensor 32 outputs a step lift signal when the rear portion of the step 20 is raised by a predetermined height, the inspection worker determines that the curved rail switch 30 is operating normally. If the sensor 32 does not output a step lift signal when the rear portion of the step 20 is raised by a predetermined height, the inspection worker determines that the curved rail switch 30 is operating abnormally. This completes the operation check of the curved rail switch 30. If the curved rail switch 30 is determined to be operating abnormally, the inspection worker repairs the curved rail switch 30 or replaces it with a new curved rail switch 30.

[0046] After completing the operation check of the curved rail switch 30, the inspection worker moves the lifting rod 41 downward to return the step 20 to its original position. The inspection worker then removes the connecting member 70 from the lifting rod 41 and the cleat holding portion 50.

[0047] The inspection worker removes the cleat holding portion 50 from the cleat 24 attached to the tread 22. Specifically, the inspection worker rotates the knob 63 to loosen the male screw 61. The clamping portion 51a of the clamping member 51 moves in the normal direction to the side surface 24a of the cleat 24, and the clamping portion 52a of the clamping member 52 moves in the normal direction to the side surface 24b of the cleat 24, causing the clamping portions 51a and 52a to move away from each other. The clamping portions 51a and 52a move away from the cleat 24 attached to the tread 22. The inspection worker then moves the cleat holding portion 50 upward so as to move away from the cleat 24. In this way, the cleat holding portion 50 is removed from the cleat 24 attached to the tread 22.

[0048] The inspection worker separates the curved rail switch operation checking jig 40 from the cleat 24 and carries the curved rail switch operation checking jig 40 to a storage facility (not shown). The curved rail switch operation checking jig 40 is stored in the storage facility.

[0049] The effects of the curved rail switch operation checking jig 40 of this embodiment will be described.

[0050] The curved rail switch operation checking jig 40 of this embodiment includes a lifting rod 41, a contact member 43, and a cleat holding portion 50. The lifting rod 41 includes a first portion (portion 41a) and a second portion (portion 41c) that is spaced apart from the first portion in the longitudinal direction of the lifting rod 41. The contact member 43 includes a contact surface 43a that contacts a cleat 24 provided on the tread 22 of the step 20, and is provided on the first portion of the lifting rod 41. The cleat holding portion 50 holds the cleat 24. The connecting member 70 connects the second portion of the lifting rod 41 and the cleat holding portion 50 to each other.

[0051] By using the curved rail switch operation checking jig 40, the inspection worker can lift the steps 20 with less force. The curved rail switch operation checking jig 40 makes it easy to check the operation of the curved rail switch 30.

[0052] In the curved rail switch operation checking jig 40 of this embodiment, the contact surface 43 a is formed of a material softer than that of the lifting rod 41 .

[0053] Therefore, when an inspection worker uses the curved rail switch operation checking jig 40 to lift the step 20, the cleats 24 provided on the step 22 are prevented from being damaged.

[0054] In the curved rail switch operation confirmation jig 40 of this embodiment, when the curved rail switch operation confirmation jig 40 is used to lift the step 20, the contact surface 43a has a semicircular shape in the cross section defined by the longitudinal direction of the lifting rod 41 and the longitudinal direction of the connecting member 70.

[0055] Therefore, when an inspection worker lifts the step 20 so that the step 20 rotates around the contact portion 43c between the contact member 43 and the cleat 24 provided on the tread 22, damage to the cleat 24 is prevented.

[0056] The curved rail switch operation checking jig 40 of this embodiment further includes a rotary joint 44 that connects the first portion (portion 41a) and the contact member 43. The connecting member 70 is a flexible elongated member or an extendable rod.

[0057] Therefore, when an inspection worker uses the curved rail switch operation checking jig 40 to lift the step 20, the step 20 is lifted while rotating around the contact portion 43c between the contact member 43 and the cleat 24 provided on the tread 22. When the curved rail switch operation checking jig 40 is used to lift the step 20, the step 20 is prevented from colliding with an adjacent step 20. The curved rail switch operation checking jig 40 makes it easy to check the operation of the curved rail switch 30.

[0058] In the curved rail switch operation checking jig 40 of this embodiment, the rotary joint 44 includes a support member 45 that supports the contact member 43, and a pin 48. A first hole (hole 41h) is provided in a first portion (portion 41a) of the lifting rod 41. A second hole (hole 47h) is provided in the support member 45. The pin 48 is inserted into the first hole and the second hole.

[0059] Therefore, when the curved rail switch operation checking jig 40 is used to lift the step 20, the step 20 is prevented from colliding with an adjacent step 20. The curved rail switch operation checking jig 40 makes it easy to check the operation of the curved rail switch 30.

[0060] In the curved rail switch operation confirmation jig 40 of this embodiment, the cleat holding portion 50 includes a pair of clamping members 51, 52 that clamp the cleat 24, and a locking portion 60 that locks the pair of clamping members 51, 52 while the pair of clamping members 51, 52 clamp the cleat 24.

[0061] In the curved rail switch operation checking jig 40 of this embodiment, a recess 47d into which the cleat 24 fits is provided on the contact surface 43a.

[0062] This increases the contact area between the contact member 43 and the cleat 24. When an inspection worker uses the curved rail switch operation checking jig 40 to lift the step 20, the contact member 43 can be prevented from moving relative to the cleat 24. The curved rail switch operation checking jig 40 makes it possible to easily and stably check the operation of the curved rail switch 30.

[0063] The locking portion 60 can maintain a state in which the cleat 24 is clamped by the pair of clamping members 51, 52. The curved rail switch operation checking jig 40 makes it easy to check the operation of the curved rail switch 30.

[0064] In the curved rail switch operation checking jig 40 of this embodiment, the cleat 24 includes a first side surface (side surface 24a) and a second side surface (side surface 24b) opposite the first side surface. The first and second side surfaces protrude from the tread 22. One of the pair of clamping members 51, 52 (e.g., clamping member 51) includes a first clamping portion (clamping portion 51a) that contacts the first side surface of the cleat 24 and a first anti-slip portion (anti-slip portion 55). The other of the pair of clamping members 51, 52 (e.g., clamping member 52) includes a second clamping portion (clamping portion 52a) that contacts the second side surface of the cleat 24 and a second anti-slip portion (anti-slip portion 56). The first anti-slip portion is provided on a surface of the first clamping portion facing the second clamping portion. The second anti-slip portion is provided on a surface of the second clamping portion facing the first clamping portion.

[0065] Therefore, the first anti-slip portion (anti-slip portion 55) and the second anti-slip portion (anti-slip portion 56) can prevent the clamping members 51, 52 from slipping on the first side surface (side surface 24a) and the second side surface (side surface 24b) of the cleat 24 and coming off the cleat 24 after the clamping members 51, 52 clamp the cleat 24 provided on the tread 22. The curved rail switch operation checking jig 40 makes it possible to easily and stably check the operation of the curved rail switch 30.

[0066] In the curved rail switch operation checking jig 40 of this embodiment, the cleat 24 includes a first side surface (side surface 24a) and a second side surface (side surface 24b) opposite the first side surface. The first and second side surfaces protrude from the tread 22. One of the pair of clamping members 51, 52 (e.g., clamping member 51) includes a first clamping portion (clamping portion 51a) that contacts the first side surface of the cleat 24. One of the pair of clamping members 51, 52 is provided with a third hole (hole 51e). The other of the pair of clamping members 51, 52 (e.g., clamping member 52) includes a second clamping portion (clamping portion 52a) that contacts the second side surface of the cleat 24. The other of the pair of clamping members 51, 52 is provided with a fourth hole. The cleat holding portion 50 further includes an eccentric pin 59 inserted into the third hole and the fourth hole.

[0067] Therefore, the first clamping portion (clamping portion 51a) moves in the normal direction to the first side surface (side surface 24a) of the cleat 24, and the second clamping portion (clamping portion 52a) moves in the normal direction to the second side surface (side surface 24b) of the cleat 24. The clamping pressure by the first clamping portion and the second clamping portion is applied evenly to the cleat 24. The clamping members 51, 52 can be prevented from coming off the cleat 24. The curved rail switch operation checking jig 40 makes it possible to easily and stably check the operation of the curved rail switch 30.

[0068] In the curved rail switch operation checking jig 40 of this embodiment, the cleat holding portion 50 is a pair of vise pliers 80 .

[0069] The vise pliers 80 can maintain the cleat 24 clamped between the pair of clamping members 51, 52. The curved rail switch operation checking jig 40 makes it easy to check the operation of the curved rail switch 30.

[0070] The embodiments and modifications disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0071] 1 escalator, 2 truss, 3 upper sprocket, 4 lower sprocket, 5 step rail, 6 follower rail, 7 step chain, 8 drive unit, 10 balustrade, 11 moving handrail, 15 lower horizontal section, 16 lower curved section, 17 intermediate inclined section, 18 upper curved section, 19 upper horizontal section, 20 step, 21 frame, 22 step, 23 riser, 24 cleat, 24a, 24b side, 24t top, 25 step shaft, 26 step roller, 28 follower roller, 30 curved rail switch, 31 operating rail, 32 sensor, 35 control device, 40 curved rail switch operation confirmation jig, 41 lifting rod, 41a, 41b, 41c section, 41h hole, 42 handle, 43 contact member, 43a Contact surface, 43c contact portion, 44 rotary joint, 45 support member, 46 base plate, 47 protruding piece, 47d recess, 47h hole, 48 pin, 49 ring member, 50 cleat holding portion, 51, 52 clamping member, 51a, 52a clamping portion, 51b, 52b end portion, 51c, 52c central portion, 51e, 51f, 51g, 52g hole, 52f female thread hole, 55, 56 non-slip portion, 58 pin, 59 eccentric pin, 60 locking portion, 61 male thread, 61a head portion, 61b body portion, 65 guide pin, 66 ring member, 70 connecting member, 80 vise pliers.

Claims

1. a lifting rod including a first portion and a second portion, the second portion being spaced apart from the first portion along the length of the lifting rod; a contact member provided on the first portion, the contact member including a contact surface that contacts a cleat provided on a tread of a step; a cleat holding portion that holds the cleat; A curved rail switch operation checking jig comprising a connecting member that connects the second portion and the cleat holding portion to each other.

2. 2. The curved rail switch operation verification jig according to claim 1, wherein the contact surface is formed of a material softer than the lifting rod.

3. 3. A curved rail switch operation confirmation jig as described in claim 2, wherein when the step is lifted using the curved rail switch operation confirmation jig, the contact surface has a semicircular shape in a cross section defined by the longitudinal direction of the lifting rod and the longitudinal direction of the connecting member.

4. a rotary joint connecting the first portion and the contact member to each other; 3. The curved rail switch operation checking jig according to claim 1, wherein the connecting member is a flexible elongated member or an extendable rod.

5. the rotary joint includes a support member that supports the contact member and a pin; a first hole is provided in the first portion; A second hole is provided in the support member, The curved rail switch operation checking jig according to claim 4 , wherein the pin is inserted into the first hole and the second hole.

6. The curved rail switch operation checking jig according to claim 1 , wherein the contact surface is provided with a recess into which the cleat fits.

7. A curved rail switch operation confirmation jig as described in any one of claims 1 to 6, wherein the cleat holding portion includes a pair of clamping members that clamp the cleat, and a locking portion that locks the pair of clamping members while the pair of clamping members clamp the cleat.

8. The cleat includes a first side and a second side opposite the first side, the first side and the second side protruding from the footboard, one of the pair of clamping members includes a first clamping portion that contacts the first side surface of the cleat and a first anti-slip portion; the other of the pair of clamping members includes a second clamping portion that contacts the second side surface of the cleat and a second anti-slip portion, the first anti-slip portion is provided on a surface of the first clamping portion that faces the second clamping portion, 8. The curved rail switch operation checking jig according to claim 7, wherein the second anti-slip portion is provided on a surface of the second clamping portion that faces the first clamping portion.

9. The cleat includes a first side and a second side opposite the first side, the first side and the second side protruding from the footboard, one of the pair of clamping members includes a first clamping portion that contacts the first side surface of the cleat, and a third hole is provided in the one of the pair of clamping members; the other of the pair of clamping members includes a second clamping portion that contacts the second side surface of the cleat, and a fourth hole is provided in the other of the pair of clamping members; The curved rail switch operation checking jig according to claim 7 , wherein the cleat holding portion further includes an eccentric pin inserted into the third hole and the fourth hole.

10. 9. The curved rail switch operation checking jig according to claim 7, wherein the cleat holding portion is a pair of vise pliers.

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