Elevator jig, method for determining whether the relative position of a deflector wheel to a hoist sheave is appropriate, and method for determining the relative position of a deflector wheel to a hoist sheave

Abstract

To provide an elevator jig and so on capable of determining whether or not a relative position of a deflector wheel to a sheave is appropriate even if there is a projecting part located around between a sheave and a deflector wheel and projecting in the axial direction of the sheave.SOLUTION: A jig 50 comprises a first portion 60 having a first flat plane 60a configured of a substantially plain surface, a second portion 70 located at a distance from the first plane 60a and having a second plane 70a substantially parallel to the first plane 60a, and a connecting part 80 connecting a first place 61 and a second place 71, where the first place is located on a first side in a normal direction of the first plane 60a from the first plane 60a in the first portion 60, and the second place is located on the first side in the normal direction of the second plane 70a in the second portion 70. The connecting part 80 has an opening 81 on a second side in the normal direction and on the other hand, has a bottomed recess 82 on the first side in the normal direction when viewed from above in a vertical direction in a working condition.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to an elevator jig that can determine whether the relative position of a deflector wheel to a sheave is appropriate and can be used to position the relative position of the deflector wheel to the sheave. The present disclosure also relates to a method for determining whether the relative position of a deflector wheel to a sheave of a hoisting machine is appropriate or not. The present disclosure also relates to a method for positioning the relative position of a deflector wheel to a sheave of a hoisting machine, which determines whether the relative position of the deflector wheel to the sheave of the hoisting machine is appropriate or not. [Background technology]

[0002] Conventionally, there is an elevator described in Patent Document 1. In this elevator, a counterweight and a car are suspended by a rope inside a hoistway, and the rope is wound around a drive sheave and a deflector wheel of a hoisting machine. In addition, one end of the rope is connected to the bottom of the counterweight, and the other end of the rope is connected to the bottom of the car. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-194123 A Summary of the Invention [Problem to be solved by the invention]

[0004] When replacing a hoist with a new one, it is very important to measure the parallelism of the sheave and deflector wheel of the hoist and whether the offset of the deflector wheel relative to the sheave (the distance between the sheave and the deflector wheel in the axial direction of the sheave) is within the allowable range to ensure safety. However, when viewed from above in the vertical direction, protruding parts located around the area between the sheave and the deflector wheel and protruding in the axial direction of the sheave, such as the angle of the hoist, can get in the way, making it impossible to measure the parallelism or offset amount over a long distance.

[0005] Therefore, the object of the present disclosure is to provide an elevator jig that can determine whether the relative position of the deflector wheel to the sheave is appropriate or not even if there is a protruding part located in the vicinity between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave, and can be used to position the relative position of the deflector wheel to the sheave. The object of the present disclosure is to provide a method for determining whether the relative position of the deflector wheel to the sheave of the hoisting machine is appropriate or not even if there is a protruding part located in the vicinity between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave. The object of the present disclosure is to provide a method for determining the relative position of the deflector wheel to the sheave of the hoisting machine, which can determine ... the relative position of the deflector wheel to the sheave of the hoisting machine, even if there is a protruding part located in the vicinity between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave. [Means for solving the problem]

[0006] In order to solve the above problems, the elevator jig according to the present disclosure is an elevator jig capable of determining whether or not the relative position of a deflector wheel with respect to a sheave of a hoisting machine is appropriate, and includes a first portion having a first plane that is a substantially flat surface, a second portion having a second plane that is spaced apart from the first plane and is substantially parallel to the first plane, a first location in the first portion that is located on a first side of the first plane in a normal direction to the first plane, and a second location in the second portion that is located on the first side of the second plane in the normal direction. and a connecting portion that connects the first and second planes to each other, wherein when viewed from above in the vertical direction in a usage state, the connecting portion extends so as to have an opening on a second side in the normal direction and a recess having a bottom on a first side in the normal direction, and when viewed from above in the vertical direction in the usage state, the bottom of the recess has a portion that is located between the first location and the second location in the extension direction of the first plane and is located on the first side in the normal direction of the first plane or the second plane that is located on the first side in the normal direction.

[0007] In this specification, the term "sheave" refers to a pulley that rotates without a rope when the hoist motor is driven, and the term "cambered pulley" refers to a pulley other than the sheave that is included in the hoist structure including the hoist and the hoist base that supports it.

[0008] According to the present disclosure, even if there is a protruding portion located between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave, the connecting portion has a shape that makes a detour so that the protruding portion can be accommodated in the recess. Therefore, the protruding portion can be accommodated in the recess in a non-contact state with the inner surface of the recess, and the protruding portion can be made non-contact with an elevator jig (hereinafter simply referred to as a jig), and the jig can be arranged so that at least a part of its first plane abuts against a side surface of one of the sheave and the deflector wheel, and the second plane faces the side surface of the other of the sheave and the deflector wheel in the normal direction (hereinafter, such an arrangement state of the jig is referred to as a measurement arrangement state). Therefore, in the measurement arrangement state of the jig, by measuring the normal distance between the second plane and the other member using a measuring instrument such as a dial gauge, a depth gauge, a vernier caliper, or a ruler, it is possible to determine whether the relative position of the deflector wheel to the sheave is appropriate, and further, to determine the relative position of the deflector wheel to the sheave.

[0009] Furthermore, the connecting portion may be substantially U-shaped or substantially C-shaped when viewed vertically from above in the usage state.

[0010] According to this configuration, even if there is a protruding portion that is located in the area between the sheave and the deflection wheel when viewed from above in the vertical direction and protrudes in the axial direction of the sheave, the measurement arrangement can be easily realized with a simple structure, which promotes weight reduction of the jig.

[0011] Furthermore, each of the first and second parts may have the shape of a flat plate or a square timber, and when viewed from above in the vertical direction in the usage state, the first plane is the second side surface of the first part in the normal direction and the second plane is the second side surface of the second part in the normal direction, and when viewed from above in the vertical direction in the usage state, the connecting portion may have a first extension portion extending from the first side surface of the first part in the normal direction to the first side in the normal direction, a second extension portion extending from the first side surface of the second part in the normal direction to the first side in the normal direction, and an orthogonal direction extension portion that connects a first end portion on the tip side of the first extension portion and a first end portion on the tip side of the second extension portion and extends in an orthogonal direction that is approximately perpendicular to the normal direction.

[0012] According to this configuration, the jig can have a simple structure, and further, it is easy to increase the parallelism between the first plane of the first portion and the second plane of the second portion.

[0013] The orthogonal extending portion may be extendable in length.

[0014] Depending on the elevator specifications (model), the perpendicular distance between the sheave and the deflector wheel in the perpendicular direction perpendicular to the thickness direction of the sheave when viewed from above in the vertical direction may differ.

[0015] According to this configuration, by adjusting the length of the orthogonal extension part, the jig can be applied to any elevator with different orthogonal distances between the sheave and the deflector wheel. Therefore, the versatility of the jig can be significantly improved.

[0016] Moreover, both the length of the first extension portion and the length of the second extension portion may be extendable.

[0017] When viewed from above in the vertical direction, the above-mentioned normal protrusion length of the protruding portion located around the area between the sheave and the deflector wheel and protruding in the axial direction of the sheave may vary depending on the elevator specifications (model).

[0018] According to this configuration, by changing the length of the first extension part and the length of the second extension part, the jig can be applied to any elevator having a different protruding length of the protruding part. Therefore, the versatility of the jig can be significantly improved.

[0019] The second portion may have one or more through holes extending in the normal direction.

[0020] According to this configuration, the relative position of the other side surface with respect to the second plane can be determined with high accuracy by simply abutting at least a part of the first plane against one side surface of the sheave and the deflector wheel, and facing the through hole in the normal direction to the other side surface of the sheave and the deflector wheel, and passing the pointer of the dial gauge through the through hole and contracting the tip side of the pointer on the other side surface. Therefore, since the relative position of the second plane with respect to the first plane is known, as a result, the relative position of the other side surface with respect to the one side surface can be determined with high accuracy. Therefore, the relative position of the second plane with respect to the first plane can be determined with high accuracy and easily by using the dial gauge.

[0021] The connector may also include a first reinforcing portion installed at a corner between the first portion and the first extension portion and reinforcing the connection portion between the first portion and the first extension portion, a second reinforcing portion installed at a corner between the second portion and the second extension portion and reinforcing the connection portion between the second portion and the second extension portion, a third reinforcing portion installed at a corner between the first extension portion and the orthogonal direction extending portion and reinforcing the connection portion between the first extension portion and the orthogonal direction extending portion, and a fourth reinforcing portion installed at the corner between the second extension portion and the orthogonal direction extending portion and reinforcing the connection portion between the second extension portion and the orthogonal direction extending portion.

[0022] According to this configuration, each connection part in the first part, the second part, the first extension part, the second extension part, and the orthogonal direction extension part can be reinforced by the first to fourth reinforcing parts, and the rigidity of each connection part can be increased. Therefore, damage to the jig can be suppressed. Furthermore, a state in which the first extension part and the orthogonal direction extension part, the first extension part and the first side surface in the normal direction of the first part, the second extension part and the orthogonal direction extension part, and the second extension part and the first side surface in the normal direction of the second part are orthogonal with high accuracy can be maintained.

[0023] In addition, the method for determining whether the relative position of a deflector wheel to a sheave of a hoisting machine is appropriate using an elevator jig according to the present disclosure, and includes a jig arrangement step of abutting at least a portion of the first plane against one of the side of the sheave and the side of the deflector wheel, while arranging at least a portion of the second plane so as to face the other of the side of the sheave and the side of the deflector wheel in the normal direction, a measurement step of measuring the normal distance between the second plane and the other side at two or more locations spaced apart from each other after the jig arrangement step, and a judgment step of judging whether the relative position of the deflector wheel to the sheave is appropriate based on the two or more distances measured in the measurement step.

[0024] According to the method for determining whether or not the relative position is appropriate, even if there is a protruding portion located between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave, the protruding portion can be accommodated in the recess without contacting the inner surface of the recess. Therefore, in the jig arrangement step, the jig can be arranged so that the protruding portion is not in contact with the jig, and the jig has at least a part of its first plane abutting against a side surface of one of the sheave and the deflector wheel, and the second plane faces the side surface of the other of the sheave and the deflector wheel in the normal direction. Then, in the measurement step, with the jig arranged, the normal distance between the second plane and the other member can be measured using a measuring instrument such as a dial gauge, a depth gauge, a vernier caliper, or a ruler, and in the determination step, it can be determined whether or not the relative position of the deflector wheel to the sheave is appropriate.

[0025] Furthermore, the method for positioning the relative position of a deflector wheel with respect to a sheave of a hoisting machine according to the present disclosure is a method for positioning the relative position of the deflector wheel with respect to the sheave of a hoisting machine using an elevator jig of an embodiment of the elevator jig of the present disclosure, in which a second portion has one or more through holes extending in a normal direction, and includes a jig arrangement step of abutting at least a part of the first plane against one of the side of the sheave and the side of the deflector wheel, while facing at least one of the through holes in the normal direction to the other of the side of the sheave and the side of the deflector wheel, a measurement step of passing a pointer of a dial gauge through the through hole from an opening of the through hole on the opposite side to the second plane side in the normal direction, thereby contracting the length of the pointer, thereby measuring the normal distance between the second plane and the other side using the dial gauge at two or more locations spaced apart from each other, and a positioning step of positioning the relative position based on the two or more distances measured in the measurement step.

[0026] According to the positioning method of the present disclosure, the relative position of the other side surface with respect to the second plane can be determined with high accuracy by simply abutting at least a part of the first plane against one side surface of the sheave and the deflector wheel, and facing the through hole in the normal direction to the other side surface of the sheave and the deflector wheel, and passing the pointer of the dial gauge through the through hole and contracting the tip side of the pointer on the other side surface. Therefore, since the relative position of the second plane with respect to the first plane is known, as a result, the relative position of the other side surface with respect to the one side surface can be determined with high accuracy. Therefore, the relative position of the second plane with respect to the first plane can be determined with high accuracy and easily by using the dial gauge. Effect of the Invention

[0027] According to the jig of the present disclosure, even if there is a protruding part located in the vicinity between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave, it is possible to determine whether the relative position of the deflector wheel to the sheave is appropriate or not, and it can also be used to position the relative position of the deflector wheel to the sheave. According to the method of determining the relative position of the deflector wheel to the sheave of the hoisting machine of the present disclosure, even if there is a protruding part located in the vicinity between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave, it is possible to determine whether the relative position of the deflector wheel to the sheave of the hoisting machine is appropriate or not. According to the method of determining the relative position of the deflector wheel to the sheave of the present disclosure, even if there is a protruding part located in the vicinity between the sheave and the deflector wheel when viewed from above in the vertical direction and protruding in the axial direction of the sheave, it is possible to easily position the relative position of the deflector wheel to the sheave of the hoisting machine. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a schematic diagram of an elevator. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a side view of the hoist structure showing one side of the hoist platform supporting the hoist; [Figure 4]FIG. 2 is a plan view of the hoist structure as viewed from above in the vertical direction. [Diagram 5] FIG. 1 is a schematic plan view of an elevator jig according to an embodiment of the present disclosure, viewed from above in the vertical direction, during the measurement of parallelism between a sheave and a deflection wheel. [Figure 6] 11 is a perspective view showing an example of an expansion and contraction structure that can be used as a part of an expandable and contractible extension portion. FIG. [Figure 7] FIG. 2 is a front view of an analog dial gauge. [Figure 8] This figure explains the measurement method of the dial gauge and the reason for measuring the normal distance between the second plane of the second part and the side of the sheave at two or more points, and is a plan view of the dial gauge measuring the distance as viewed from above in the vertical direction. [Figure 9] FIG. 13 is a schematic plan view of a modified jig in the middle of measuring the parallelism between the sheave and the deflector wheel, as viewed from above in the vertical direction. [Figure 10] FIG. 13 is a schematic plan view of a further modified jig in the middle of measuring the parallelism between the sheave and the deflector wheel, as viewed from above in the vertical direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, the embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. In addition, when multiple embodiments and modified examples are included below, it is assumed from the beginning that new embodiments will be constructed by appropriately combining the characteristic parts of those. In addition, in the following examples, the same components are given the same symbols in the drawings, and duplicated explanations are omitted. In addition, multiple drawings include schematic diagrams, and the dimensional ratios of length, width, height, etc. of each member between different drawings do not necessarily match. In addition, among the components described below, components that are not described in the independent claim showing the highest concept are optional components and are not essential components. In addition, in the drawings and the following description, the X direction indicates the longitudinal direction of the hoisting machine structure 10 (hoisting machine 12), the Y direction indicates the width direction (depth direction) of the hoisting machine structure 10 (hoisting machine 12), and the Z direction indicates the height direction of the hoisting machine structure 10 (hoisting machine 12). The X direction, the Y direction, and the Z direction are perpendicular to each other. In addition, in the following embodiments, when a sheave 55 is mentioned, it refers to a sheave that rotates without the aid of a rope (wire rope) 14 when the hoist motor 12a is driven, and when a deflector pulley 25 is mentioned, it refers to a pulley other than the sheave 55 that is included in the hoist structure 10 that includes the hoist 12 and the hoist base 21 that supports it.

[0030] FIG. 1 is a schematic diagram of an elevator 1. As shown in FIG. 1, the elevator 1 includes a car 11, a hoisting machine structure 10, a counterweight 13, a rope 14, a car call button 15, an in-car operation panel 16, a landing position detection sensor 18, and a control panel 19. The hoisting machine structure 10 includes a hoisting machine 12, a deflection sheave 25, and a hoist base 21 that supports the deflection sheave 25 and the hoisting machine 12. The control panel 19 and the hoisting machine structure 10 are provided in a machine room 30 above a hoistway 20. If the elevator does not have a machine room, the control panel and the hoisting machine structure are provided, for example, on a pit below the hoistway.

[0031] A rope 14 is wound around a sheave 55 of the hoist 12, and the car 11 is suspended from one end of the rope 14. Meanwhile, a counterweight 13 is suspended from the other end of the rope 14 via a deflector wheel 25. The car call button 15 is a button for calling the car 11 and specifying the direction of movement of the car 11, and is provided at the landings 22 of all floors. Also, the in-car operation panel 16 has a plurality of destination floor designation buttons 16a, a car door open button 16b, and a car door close button 16c. A plurality of destination floor designation buttons 16a are provided in the car 11 for designating a destination floor of the car 11, a car door opening button 16b is provided in the car 11 for a person in the car 11 to open the car door 32, and a car door closing button 16c is provided in the car 11 for a person in the car 11 to close the car door 32.

[0032] The car 11 and the counterweight 13 are guided by guide rails provided in the hoistway 20. A control panel 19 receives signals from the car call button 15 and the destination floor designation button 16a and appropriately controls the rotation speed and direction of the hoist motor 12a of the hoist 12, so that the car 11 and the counterweight 13 rise and fall in the hoistway 20 in a bucket-like manner. A landing position detection sensor 18 detects the landing position of the landing hall 22 where the car 11 lands. The landing position detection sensor 18 includes, for example, a vane 18a made of a steel plate or the like provided in the hoistway position corresponding to the landing position of each floor, and a magnetic detector 18b that detects the vane 18a. When the control panel 19 receives a signal from the landing position detection sensor 18 indicating that the car 11 has landed at the landing 22, it controls the car door opening and closing motor (not shown), causing the car door 32 to open and the landing door 31 to open in conjunction with the opening movement of the car door 32, allowing people to get on and off from the car 11 to the landing 22.

[0033] Fig. 2 is a front view of the hoisting machine structure 10. Fig. 3 is a side view of the hoisting machine structure 10, showing one side of the hoisting base 21 supporting the hoisting machine 12. Fig. 4 is a plan view of the hoisting machine structure 10 as viewed from above in the Z direction. As shown in Fig. 2, the hoisting base 21 has a pair of substantially identical machine bases 5, 6, and as shown in Fig. 3, the pair of machine bases 5, 6 have an elongated shape.

[0034] As shown in FIG. 2, the pair of machine bases 5, 6 are attached to the machine room 30 (see FIG. 1) in a parallel state, and are arranged in the machine room 30 in a state of facing each other with a gap in their width direction (corresponding to the Y direction). Each machine base 5, 6 is installed on the floor 59 (see FIG. 1) of the machine room 30, and the hoisting machine 12 is fixed to the pair of machine bases 5, 6 with bolts via vibration-proof rubber (not shown) while straddling the pair of machine bases 5, 6. The vibration-proof rubber may be omitted. Alternatively, instead of the vibration-proof rubber, a member formed of a vibration-proof material such as a dislocation type vibration-proof alloy, a twin crystal type vibration-proof alloy, or a ferromagnetic type vibration-proof alloy may be used.

[0035] As shown in FIG. 2, the hoist 21 has a rod-shaped member 21a extending in a direction (corresponding to the Y direction) that is substantially perpendicular to the direction (corresponding to the X direction) of extension of the long machine bases 5 and 6, and both ends of the rod-shaped member 21a are fixed to the pair of machine bases 5 and 6. The deflection wheel 25 is rotatably fixed to the rod-shaped member 21a via bearings. The hoist 21 also has a long angle (protruding portion) 28 such as an L-shaped angle, and each of the pair of machine bases 5 and 6 has a U-shaped angle 5a, 6a. The long angle 28 extends in the Y direction. Both ends of the long angle 28 are fixed to the upper surfaces of the U-shaped angles 5a, 6a with bolts or the like. By fixing the long angle 28 so as to straddle a pair of machine bases 5, 6, relative movement of one machine base 6 in the normal direction (Y direction) relative to the other machine base 5 is prevented, and the strength (rigidity) of the hoisting base 21 in the Y direction is increased.

[0036] As shown in Fig. 2, the sheave 55 of the hoist 12 is located at a position higher than the deflection wheel 25 with a gap therebetween in the Z direction, and the long angle 28 is located between the sheave 55 and the deflection wheel 25 in the Z direction. In addition, the long angle 28 extends from one side of the sheave 55 in the Y direction to the other side of the sheave 55 in the Y direction with respect to the axial direction (corresponding to the Y direction) of the sheave 55 of the hoist 12, and also extends from one side of the deflection wheel 25 in the Y direction to the other side of the deflection wheel 25 in the Y direction with respect to the deflection wheel 25. In other words, the long angle 28 extends in the Y direction and protrudes on both sides of the Y direction with respect to the sheave 55 and the deflection wheel 25.

[0037] As shown in Fig. 3, the long angle 28 has a flat plate portion 28a that has a certain width in the X direction and extends in the Y direction, and the flat plate portion 28a is located on a line connecting the central axis of the sheave 55 and the central axis of the deflection wheel 25 in the side view of Fig. 3. As shown in Fig. 4, in a plan view seen from above, one end of the sheave 55 in the X direction and the other end of the deflection wheel 25 in the X direction overlap with each other. In the plan view shown in Fig. 4, the long angle 28 is located on one side in the X direction from the sheave 55 and on the other side in the X direction from the center of the deflection wheel 25 in the X direction.

[0038] In the configuration of the hoist structure 10 described above, when replacing or repairing the hoist 12, even if one attempts to measure the parallelism of the sheave 55 and the deflection wheel 25 over a long distance in order to confirm that the twist of the rope 14 between the sheave 55 and the deflection wheel 25 is within a specified range and that the cage 11 can perform smooth and safe raising and lowering operations, there is a problem in that, because the long angle 28 protruding on both sides in the Y direction is located between the sheave 55 and the deflection wheel 25, the long angle 28 gets in the way and makes it impossible to measure the parallelism over a long distance.

[0039] In this context, the elevator jig of the present disclosure has been devised to be able to precisely measure the parallelism between the sheave 55 and the deflector wheel 25 even when there is an angle (protruding portion) 28 that is located in the vicinity between the sheave 55 and the deflector wheel 25 when viewed from above in the vertical direction (Z direction) and that protrudes in the axial direction of the sheave 55. The structure of such an elevator jig of the present disclosure and a method for measuring the parallelism will be described below.

[0040] FIG. 5 is a schematic plan view of an elevator jig 50 according to an embodiment of the present disclosure, when the parallelism between the sheave 55 and the deflector 25 is being measured, as viewed from above in the Z direction. As shown in FIG. 5, the elevator jig (hereinafter simply referred to as the jig) 50 includes a first portion 60 having a first plane 60a that is substantially flat, and a second portion 70 having a second plane 70a that is spaced apart from the first plane 60a and is substantially parallel to the first plane 60a. Each of the first portion 60 and the second portion 70 is, for example, a plate-shaped portion made of a resin material or a metal material, and has, for example, a disk shape or a rectangular plate shape. Each of the first portion 60 and the second portion 70 may have a shape of a square timber.

[0041] The jig 50 also includes a connecting portion 80 that connects a first location 61 located on a first side in the normal direction of the first plane 60a (corresponding to the Y direction in the plan view of FIG. 5) of the first plane 60a in the first portion 60 to a second location 71 located on the first side in the normal direction of the second plane 70a in the second portion 70. When viewed from above in the vertical direction while the jig 50 is in use, the connecting portion 80 is bent in a substantially U-shape to have an opening 81 on the second side in the Y direction and a recess 82 with a bottom on the first side in the Y direction.

[0042] In the plan view of Fig. 5, the bottom 82a of the recess 82 has a portion located between the first location 61 and the second location 71 in the extension direction of the first plane 60a (which coincides with the X-direction in the plan view of Fig. 5). The bottom 82a of the recess 82 is located closer to the first side in the normal direction than the plane located on the first side in the normal direction out of the first plane 60a and the second plane 70a. More specifically, when viewed from above in the vertical direction in the used state, the first plane 60a is the surface on the second side in the normal direction of the first portion 60, and the second plane 70a is the surface on the second side in the normal direction of the second portion 70. Moreover, when viewed from above in the vertical direction in the used state, the connecting portion 80 has a first extending portion 62 extending from a surface 68 on the first side in the normal direction of the first portion 60 to the first side in the normal direction, and a second extending portion 72 extending from a surface 78 on the first side in the normal direction of the second portion 70 to the first side in the normal direction. Moreover, when viewed from above in the vertical direction in the used state, the connecting portion 80 has an orthogonal extending portion 87 that connects a first end portion 62a on the tip side of the first extending portion 62 and a first end portion 72a on the tip side of the second extending portion 72 and extends in an orthogonal direction (corresponding to the X direction in the plan view of FIG. 5) that is substantially orthogonal to the normal direction.

[0043] The length of the orthogonal extending portion 87 is extendable. In addition, both the length of the first extending portion 62 and the length of the second extending portion 72 are extendable. FIG. 6 is a perspective view showing an example of an extending structure 40 that can realize extension and contraction and can be adopted as a part of the extending portions 62, 72, and 87. As shown in FIG. 6, the extending structure 40 has a first cylindrical member 41, a second cylindrical member 42, and a wing bolt 43. The second cylindrical member 42 has a screw hole extending in its radial direction, and the wing bolt 43 is screwed into the screw hole. When the wing bolt 43 is not tightened, a desired length of the first cylindrical member 41 can be accommodated in the second cylindrical member 42, and then, by tightening the wing bolt 43 and pressing the tip surface of the wing bolt 43 against the outer circumferential surface of the first cylindrical member 41, the relative position of the first cylindrical member 41 with respect to the second cylindrical member 42 can be determined, and the length of the extending structure 40 can be freely changed. Although not shown in Figure 6, the first cylindrical member 41 and the second cylindrical member 42 are engaged with each other by spline engagement, serration engagement, key engagement, or the like, so that the first cylindrical member 41 cannot rotate relative to the second cylindrical member 42 in the circumferential direction.

[0044] 5, the second portion 70 has one or more through holes 74 extending in the normal direction, and in this embodiment, has two through holes 74 spaced apart in the orthogonal direction (corresponding to the X direction in the plan view of FIG. 5). The reason for providing the through holes 74 in the second portion 70 will be described below with reference to FIGS. 5 and 7.

[0045] In the above configuration, the jig 50 can be used to determine whether the relative position of the deflector wheel 25 with respect to the sheave 55 of the hoist 12 is appropriate or not as follows. First, a jig arrangement step is performed. In detail, at least a part of the first plane 60a of the first portion 60 of the jig 50 is abutted against one of the side surface of the sheave 55 and the side surface of the deflector wheel 25, while at least a part of the second plane 70a of the second portion 70 is arranged to face the other of the side surface of the sheave 55 and the side surface of the deflector wheel 25 in the normal direction. In the example shown in FIG. 5, at least a part of the first plane 60a of the first portion 60 is abutted against the side surface 25a of the deflector wheel 25, and at least a part of the second plane 70a of the second portion 70 is arranged to face the side surface 55a of the sheave 55 in the normal direction. In the jig 50 of this embodiment, the orthogonal direction extending portion 87, the first extending portion 62, and the second extending portion 72 are each extendable, and the length of the orthogonal direction extending portion 87, the length of the first extending portion 62, and the length of the second extending portion 72 can be freely adjusted. Therefore, the jig 50 can be easily arranged in this manner.

[0046] Next, a measuring step is performed. In the measuring step, the distance in the normal direction between the second plane 70a of the second portion 70 and the other side surface is measured at two or more points spaced apart from each other. In the example shown in Fig. 5, the distance in the normal direction between the second plane 70a of the second portion 70 and the side surface 55a of the sheave 55 is measured at two or more points spaced apart from each other. This measurement is preferably performed using a dial gauge, the structure and method of measuring the distance of which will be described next, since it allows for precise measurement.

[0047] FIG. 7 is a front view of an analog dial gauge 35. The dial gauge 35 is a tool (measuring instrument) for accurately measuring short linear distances. The analog dial gauge 35 converts the linear motion of the telescopic pointer (spindle) 36 to which the contact point is attached into rotational motion by gears (rack and pinion), which then amplifies the motion using gears, and indicates the magnitude of the motion with the scale and pointer. The measurement range is, for example, 0 to 10 mm, and there are some with graduations of (1 / 100) mm and (1 / 1000) mm. Note that a digital dial gauge may be used as the dial gauge, and in this case, the linear motion of the pointer to which the contact point is attached is read using an encoder, and the value read by the encoder is displayed on an LCD or display.

[0048] Fig. 8 is a diagram for explaining a measurement method of the dial gauge 35 and the reason for measuring the distance in the normal direction between the second plane 70a of the second portion 70 and the side surface 55a of the sheave 55 at two or more points, and is a plan view of the dial gauge 35 measuring the distance as viewed from above in the vertical direction. With reference to Figs. 5 and 8, as described above, the second portion 70 has two through holes 74 that are spaced apart in the orthogonal direction (corresponding to the X direction in the plan view of Fig. 5) and extend in the normal direction. Each through hole 74 is a hole into which the extendable pointer 36 of the dial gauge 35 is inserted.

[0049] The dimension in the normal direction of each through hole 74 is shorter than the length of the pointer 36 when no force is applied, and when the pointer 36 when no force is applied is inserted into the through hole 74, the tip of the pointer 36 protrudes to the outside from each through hole 74. Here, the dial gauge 35 holds the end face 37, which is the reference for the extension and contraction of the pointer 36, in a state in which it is in contact with the first side face 78 in the normal direction of the second part 70, and brings the pointer 36 into a contracted state by the force from the side face 55a of the sheave 55. Then, the distance in the normal direction between the second plane 70a of the second part 70 and the side face 55a of the sheave 55 is measured based on the scale value of the dial gauge 35 in this state.

[0050] As described above, the first plane 60a and the second plane 70a of the jig 50 are substantially parallel, and the first plane 60a is in contact with the side surface 25a of the deflection wheel 25. Therefore, if the side surface 25a of the deflection wheel 25 and the side surface 55a of the sheave 55 are substantially parallel, the scale of the dial gauge 35 will be substantially the same value regardless of which of the two through holes 74 is used to perform measurement with the dial gauge 35. In contrast, if the side surface 55a of the sheave 55 is inclined relative to the side surface 25a of the deflection wheel 25, as shown in FIG. 8, the distance measured with the dial gauge 35 using one of the through holes 74 will be different from the distance measured with the dial gauge 35 using the other through hole 74.

[0051] When the measurement step is completed, a judgment step is finally performed. In the judgment step, it is judged whether the relative position of the deflector wheel 25 with respect to the sheave 55 is appropriate or not based on the two or more distances measured in the measurement step. In the judgment, it is judged whether the parallelism is appropriate or not, and whether the offset amount is appropriate or not. First, regarding the parallelism, for example, the absolute value of the difference between the distances measured using the dial gauge 35 using each of the two through holes 74 is calculated, and it is judged whether the calculated absolute value is equal to or less than the first threshold value. If the absolute value is equal to or less than the first threshold value, it is judged that the parallelism is appropriate. Here, the absolute value increases in proportion to the distance between the two through holes 74 in the second portion 70. Therefore, since the distance between the two or more through holes 74 differs for each jig 50, even if the hoisting machine structure 10 is the same, the first threshold value will differ for each jig 50.

[0052] Next, whether the offset amount is appropriate or not is judged as follows. First, the offset amount will be described. The axial location of the pulley where the groove for accommodating the rope 14 is formed, i.e., the axial distance from the axial end face of the pulley where the groove is formed, is not necessarily the same for the sheave 55 and the deflector wheel 25. Therefore, even if the sheave 55 and the deflector wheel 25 are parallel to each other, the state in which the side surface 55a of the sheave 55 and the side surface 25a of the deflector wheel 25 are located on the same plane is not necessarily the best state in which the rope 14 is least twisted. The offset amount can be defined as the distance in the axial direction of the sheave 55 between the side surface 55a of the sheave 55 and the side surface 25a of the deflector wheel 25 when the sheave 55 and the deflector wheel 25 are parallel to each other.

[0053] Next, the determination of whether the offset amount is appropriate is performed, for example, as follows. First, the distance in the normal direction between the first plane 60a and the second plane 70a is obtained. This can be measured, for example, using a long piece. Alternatively, in each of the first extension portion 62 and the second extension portion 72, if a scale that can specify the degree of expansion and contraction is attached to the outer circumferential surface of the first cylindrical portion that can be accommodated in the second cylindrical portion by a desired length, the scale at the end of the part of the first cylindrical portion that is not accommodated in the second cylindrical portion becomes the scale indicating the contraction scale. Therefore, by obtaining the difference between the scale of the first cylindrical portion in the first extension portion 62 and the scale of the first cylindrical portion in the second extension portion 72, the distance in the normal direction between the first plane 60a and the second plane 70a can be calculated accurately and easily.

[0054] Next, the offset amount is calculated using the distance in the normal direction between the second plane 70a of the second portion 70 and the side surface 55a of the sheave 55, measured using the dial gauge 35. Since the relative position of the second plane 70a with respect to the first plane 60a (i.e., the side surface 25a of the deflection wheel 25) in the normal direction (axial direction of the sheave 55) is calculated, and the relative position of the side surface 55a of the sheave 55 with respect to the second plane 70a is also calculated, the relative position of the side surface 55a of the sheave 55 with respect to the side surface 25a of the deflection wheel 25 can be precisely specified.

[0055] Therefore, for each hoist structure 10, the best offset amount, i.e., the distance in the axial direction of the sheave 55 between the side 55a of the sheave 55 and the side 25a of the deflector wheel 25 when the rope 14 is in the best state with the least twisting, is known, so a determination is made as to whether the absolute value of the difference between the best offset amount and the actually measured offset amount is less than or equal to a second threshold value, and if the absolute value is less than or equal to the second threshold value, the offset amount can be determined to be appropriate.

[0056] In the above explanation, the jig 50 is used to determine whether the parallelism and offset amount are appropriate, but the jig 50 can also be actively used to precisely position the side 25a of the deflection wheel 25 relative to the side 55a of the sheave 55.

[0057] In detail, in this case, at least a part of the first plane 60a is abutted against one of the side surface 55a of the sheave 55 and the side surface 25a of the deflection wheel 25, while both of the two through holes 74 provided in the second portion 70 are opposed to the other side surface of the side surface 55a of the sheave 55 and the side surface 25a of the deflection wheel 25 in the normal direction. Then, the pointer 36 of the dial gauge 35 is passed through the through hole 74 from the opening on the opposite side of the second plane 70a in the normal direction of each through hole 74, and the length of the pointer 36 is contracted, thereby measuring the normal distance between the second plane 70a and the other side surface at two or more points spaced apart from each other using the dial gauge 35. Then, the relative position of the side surface 25a of the deflection wheel 25 to the side surface 55a of the sheave 55 is precisely positioned based on the two or more measured distances.

[0058] As described above, the jig 50 can determine whether the parallelism and offset of the deflector wheel 25 relative to the sheave 55 are appropriate. In other words, if at least one of the parallelism and offset of the deflector wheel 25 relative to the sheave 55 is not appropriate, the installation position of at least one of the sheave 55 and the deflector wheel 25 in the hoist structure can be adjusted so that at least one of the parallelism and offset becomes appropriate. In determining the relative position, such an operation is performed based on two or more of the above-mentioned measured distances.

[0059] In the above description, two or more through holes 74 are formed in the second portion 70, and the parallelism and offset amount are judged to be appropriate using the dial gauge 35. However, only one through hole 74 may be formed in the second portion, and the parallelism and offset amount may be evaluated using the dial gauge 35. In this case, the distance in the normal direction between the second plane of the second portion and the side surface of the sheave 55 or the deflection wheel 25 is measured using only one through hole formed in the second portion, and then the length of the orthogonal extending portion is changed to move the orthogonal position of only one through hole. In this way, even if only one through hole exists in the second portion, the parallelism and offset amount can be evaluated using the dial gauge 35.

[0060] As described above, the jig 50 is a jig that can determine whether the relative position of the deflector sheave 25 with respect to the sheave 55 of the hoist 12 is appropriate. The jig 50 includes a first portion 60 having a first plane 60a that is substantially flat, a second portion 70 having a second plane 70a that is spaced apart from the first plane 60a and substantially parallel to the first plane 60a, and a connecting portion 80 that connects a first location 61 located on a first side in the normal direction of the first plane 60a from the first plane 60a in the first portion 60 and a second location 71 located on a first side in the normal direction from the second plane 70a in the second portion 70. When viewed from above in the vertical direction in a used state, the connecting portion 80 extends to have an opening 81 on the second side in the normal direction and a recess 82 having a bottom on the first side in the normal direction. Furthermore, when viewed from above in the vertical direction in the usage state, the bottom 82a of the recess 82 has a portion that is located between the first point 61 and the second point 71 in the extension direction of the first plane 60a, and is located on the first side in the normal direction of the first plane 60a or the second plane 70a, whichever is located on the first side in the normal direction.

[0061] According to the present disclosure, even if there is an angle (protruding portion) 28 located in the vicinity between the sheave 55 and the deflection wheel 25 when viewed from above in the vertical direction and protruding in the axial direction of the sheave 55, the connecting portion 80 has a roundabout shape so that the angle 28 can be accommodated in the recess 82. Therefore, the tip side of the angle 28 can be accommodated in the recess 82 in a non-contact state, and the angle 28 can be made non-contact with the jig 50, and the jig 50 can be arranged so that at least a part of the first plane 60a abuts against the side surface of one of the sheave 55 and the deflection wheel 25 and the second plane 70a faces the side surface of the other of the sheave 55 and the deflection wheel 25 in the normal direction (hereinafter, this arrangement state of the jig 50 is referred to as the measurement arrangement state). Therefore, by measuring the normal distance between the second plane 70a and the other component using a measuring tool such as a dial gauge, depth gauge, caliper, or ruler with the jig 50 in the measurement position, it is possible to determine whether the relative position of the deflection wheel 25 to the sheave 55 is appropriate, and further, the relative position of the deflection wheel 25 to the sheave 55 can also be determined.

[0062] Furthermore, when viewed from above in the vertical direction in a used state, the connecting portion 80 may be substantially U-shaped.

[0063] According to this configuration, even if there is an angle 28 that is located in the vicinity between the sheave 55 and the deflection wheel 25 when viewed from above in the vertical direction and that protrudes in the axial direction of the sheave 55, the measurement arrangement can be easily realized with a simple structure, and the jig can be made lighter.

[0064] Also, each of the first portion 60 and the second portion 70 may have the shape of a flat plate or a square timber, and when viewed from above in the vertical direction in a used state, the first plane 60a may be a surface on the second side in the normal direction of the first portion 60, and the second plane 70a may be a surface on the second side in the normal direction of the second portion 70. Also, when viewed from above in the vertical direction in a used state, the connecting portion 80 may have a first extending portion 62 extending from a first side surface 68 in the normal direction of the first portion 60 to a first side in the normal direction, a second extending portion 72 extending from a first side surface 78 in the normal direction of the second portion 70 to a first side in the normal direction, and an orthogonal extending portion 87 connecting a first end portion 62a on the tip side of the first extending portion 62 and a first end portion 72a on the tip side of the second extending portion 72 and extending in an orthogonal direction substantially orthogonal to the normal direction.

[0065] According to this configuration, the jig 50 can have a simple structure, and further, the parallelism between the first flat surface 60a of the first portion 60 and the second flat surface 70a of the second portion 70 can be easily increased.

[0066] Furthermore, the length of the orthogonal direction extending portion 87 may be extendable.

[0067] If the specifications (model) of the elevator 1 differ, the perpendicular distance between the sheave 55 and the deflection wheel 25 in the perpendicular direction perpendicular to the thickness direction of the sheave 55 when viewed from above in the vertical direction may differ.

[0068] According to this configuration, by expanding or contracting the length of the orthogonal extending portion 87, the jig 50 can be applied to any elevator 1 having a different orthogonal distance between the sheave 55 and the deflection wheel 25. Therefore, the versatility of the jig 50 can be significantly improved.

[0069] Moreover, both the length of the first extension portion 62 and the length of the second extension portion 72 may be extendable.

[0070] When viewed from above in the vertical direction, the protruding length of the angle (protruding part) 28, which is located in the area between the sheave 55 and the deflection wheel 25 and protrudes in the axial direction of the sheave 55, may vary depending on the specifications (model) of the elevator 1.

[0071] According to this configuration, by changing the length of the first extension portion 62 and the length of the second extension portion 72, the jig 50 can be applied to any elevator 1 having a different protruding length of the angle 28. Therefore, the versatility of the jig 50 can be significantly improved.

[0072] Additionally, the second portion 70 may have one or more through holes 74 extending in the normal direction.

[0073] According to this configuration, at least a part of the first plane 60a is abutted against one side of the sheave 55 and the deflection wheel 25, and the through hole 74 is opposed to the other side of the sheave 55 and the deflection wheel 25 in the normal direction, and then the pointer 36 of the dial gauge 35 is passed through the through hole 74 and the tip side of the pointer 36 is contracted on the other side, so that the relative position of the other side with respect to the second plane 70a can be determined with high accuracy. Therefore, since the relative position of the second plane 70a with respect to the first plane 60a is known, as a result, the relative position of the other side with respect to the one side can be determined with high accuracy. Therefore, the relative position of the second plane 70a with respect to the first plane 60a can be determined easily with high accuracy using the dial gauge 35.

[0074] 5, the jig 50 may include a first reinforcing portion 45 that is provided at a corner between the first portion 60 and the first extending portion 62 and reinforces the connection portion between the first portion 60 and the first extending portion 62, and a second reinforcing portion 46 that is provided at a corner between the second portion 70 and the second extending portion 72 and reinforces the connection portion between the second portion 70 and the second extending portion 72. The jig 50 may also include a third reinforcing portion 47 that is provided at a corner between the first extending portion 62 and the orthogonal extending portion 87 and reinforces the connection portion between the first extending portion 62 and the orthogonal extending portion 87, and a fourth reinforcing portion 48 that is provided at a corner between the second extending portion 72 and the orthogonal extending portion 87 and reinforces the connection portion between the second extending portion 72 and the orthogonal extending portion 87.

[0075] According to this configuration, the first to fourth reinforcing parts 45, 46, 47, 48 can reinforce the orthogonal connection structure, which has weak strength (rigidity) and is easily damaged and connects different parts in an orthogonal manner, thereby increasing the strength (rigidity) of the orthogonal connection structure.

[0076] Furthermore, the first to fourth reinforcing parts 45, 46, 47, 48 are L-shaped members, and the outer corners of the L shape are right angles. In addition, the first to fourth reinforcing parts 45, 46, 47, 48 are fixed to the orthogonal connection structures by fixing means, such as adhesives, welding, or fastening means, with the corners of the first to fourth reinforcing parts 45, 46, 47, 48 in close contact with the corners of the orthogonal connection structures without any gaps. Therefore, the first extension part 62 and the orthogonal direction extension part 87, the first extension part 62 and the first side surface 68 in the normal direction of the first part 60, the second extension part 72 and the orthogonal direction extension part 87, and the second extension part 72 and the first side surface 78 in the normal direction of the second part 70 can be maintained in a highly accurate orthogonal state.

[0077] The method for determining whether the relative position of the deflector sheave 25 with respect to the sheave 55 of the hoist 12 is appropriate using a jig 50. The method for determining whether the relative position of the deflector sheave 25 with respect to the sheave 55 of the hoist 12 is appropriate includes a jig arrangement step of abutting at least a part of the first plane 60a against one of the side of the sheave 55 and the side of the deflector sheave 25, while arranging at least a part of the second plane 70a so as to face the other of the side of the sheave 55 and the side of the deflector sheave 25 in the normal direction. The method for determining whether the relative position is appropriate includes a measurement step of measuring the normal distance between the second plane 70a and the other side at two or more points spaced apart from each other after the jig arrangement step, and a determination step of determining whether the relative position of the deflector sheave 25 with respect to the sheave 55 is appropriate based on the two or more distances measured in the measurement step.

[0078] According to the relative position suitability determination method of the present disclosure, even if an angle 28 is located in the vicinity between the sheave 55 and the deflector wheel 25 when viewed from above in the vertical direction and protrudes in the axial direction of the sheave 55, the angle 28 can be accommodated in the recess of the jig 50. Therefore, in the jig arrangement step, the protruding portion is not in contact with the jig 50, and the jig 50 can be arranged so that at least a part of the first plane 60a abuts against the side surface of one of the sheave 55 and the deflector wheel 25 and the second plane 70a faces the side surface of the other of the sheave 55 and the deflector wheel 25 in the normal direction. Then, in the measurement step, with the jig 50 arranged, a measuring instrument such as a dial gauge, a depth gauge, a vernier caliper, or a ruler can be used to measure the normal distance between the second plane 70a and the other member, and in the determination step, it can be determined whether the relative position of the deflector wheel 25 to the sheave 55 is appropriate.

[0079] The method for positioning the relative position of the deflector wheel 25 with respect to the sheave 55 of the hoist 12 according to the present disclosure is a positioning method for positioning the relative position of the deflector wheel 25 with respect to the sheave 55 of the hoist 12 using the jig 50 of the embodiment in which the second portion 70 has one or more through holes 74 extending in the normal direction. The positioning method includes a jig arrangement step of abutting at least a part of the first plane 60a against one of the side surface of the sheave 55 and the side surface of the deflector wheel 25, while facing at least one through hole 74 in the normal direction to the other side surface of the sheave 55 and the side surface of the deflector wheel 25. The positioning method also includes a measuring step of measuring the normal distance between the second plane 70a and the other side surface at two or more spaced apart locations using the dial gauge 35 by passing the pointer 36 of the dial gauge 35 through the through hole 74 from an opening on the opposite side to the second plane 70a in the normal direction in the through hole 74 to contract the length of the pointer 36, and a positioning step of positioning the above-mentioned relative position based on the two or more distances measured in the measuring step.

[0080] According to the positioning method of the present disclosure, the dial gauge 35 can be used to easily identify the relative position of the second plane 70a with respect to the first plane 60a with high accuracy.

[0081] The present disclosure is not limited to the above-described embodiment and its modified examples, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents.

[0082] For example, in the above embodiment, a case has been described in which the connecting portion 80 of the jig 50 has a substantially U-shape, and includes the first extending portion 62, the second extending portion 72, and the orthogonal extending portion 87. Also, a case has been described in which the length of the orthogonal extending portion 87 is extendable and the length of both the first extending portion 62 and the length of the second extending portion 72 are extendable.

[0083] However, the connecting portion of the jig may include a first extending portion, a second extending portion, and an orthogonal extending portion, and the length of the orthogonal extending portion may not be extendable. Alternatively, the connecting portion of the jig may include a first extending portion, a second extending portion, and an orthogonal extending portion, and both the length of the first extending portion and the length of the second extending portion may not be extendable. Alternatively, the connecting portion of the jig may not include the first extending portion, the second extending portion, and the orthogonal extending portion, and the connecting portion of the jig may not have a substantially U-shape.

[0084] For example, as shown in Figure 9, i.e., a schematic plan view of a modified jig 150 viewed from above in the Z direction while measuring the parallelism between the sheave 55 and the deflection wheel 25, when viewed from above in the vertical direction in a usable state, the connecting portion 180 of the jig 150 may have an approximately U-shape, and the jig 150 may not be able to change shape.

[0085] The jig 150 of this modified example can be easily and inexpensively formed by, for example, injection molding using resin or metal as a material. In addition, since the jig 150 does not have a structure that is easily damaged, such as an expandable structure, there is no need to handle the jig 150 carefully, which improves the ease of handling of the jig 150.

[0086] In the above embodiment, the length of the orthogonal extending portion 87 is made extendable by the extendable structure 40 shown in Fig. 6. Then, a case has been described in which the length of the extending direction of the first plane 60a of the jig 50 is made extendable when viewed from above in the vertical direction in a used state, so that the jig 50 can be applied to a plurality of different hoisting machine structures 10 having different distances between the sheave 55 and the deflection wheel 25. However, even if the orthogonal extending portion is not made extendable, the jig can be applied to a plurality of different hoisting machine structures having different distances between the sheave and the deflection wheel when viewed from above in the vertical direction in a used state.

[0087] More specifically, as shown in Figure 10, i.e., a schematic plan view of a further modified jig 250 viewed from above in the Z direction while measuring the parallelism between the sheave 55 and the deflection wheel 25, when viewed from above in the vertical direction in a usable state, at least one of the first plane 260a and the second plane 270a may be longer.

[0088] More specifically, when jig 250 is viewed from above in the vertical direction in a used state, the length of at least one of first plane 260a and second plane 270a may be 0.3 times or more, 0.5 times or more, 0.7 times or more, 1.0 times or more, 1.2 times or more, 1.5 times or more, 2 times or more, 2.5 times or more, or 3 times or more the outer diameter of sheave 55.

[0089] According to the jig 250 of this modification, when viewed from above in the vertical direction in a used state, at least one of the first plane 260a and the second plane 270a has a long length, so that the jig 250 can be applied to a plurality of different hoisting machine structures 10 having different distances between the sheave 55 and the deflection wheel 25, even though it does not have an expandable structure. Therefore, it is possible to realize a jig 250 that is not only easy and inexpensive to manufacture, but also highly versatile.

[0090] Here, when the length of the second plane of the second portion is long when viewed vertically from above in the usage state, it is preferable that the number of through holes 274 provided in the second portion is increased in proportion to the length of the second plane of the second portion, as this improves the ease of use of the jig 250.

[0091] In addition, when viewed from above in the vertical direction in the use state, the connecting portion does not have to be substantially U-shaped or substantially U-shaped, and may be, for example, an isosceles triangle shape or a circular arc shape. In short, when viewed from above in the vertical direction in the use state, the connecting portion may have any shape as long as it has an opening on the second side in the normal direction and a recess on the first side in the normal direction. In addition, the jig of the present disclosure may not have a reinforcing portion, and the second portion may not have a through hole. In addition, the jig of the present disclosure may be a dedicated jig for any type of hoisting machine structure. In this case, no portion for expanding and contracting the jig is required, and the jig can be configured compactly.

[0092] In addition, in this specification, the title of the invention includes an elevator jig, and the invention of an elevator jig is also described in the claims. However, the elevator jig of the present disclosure may be used for purposes other than elevator use. Here, even if the jig of the present disclosure is used for purposes other than elevator use, it goes without saying that if the jig of the present disclosure is used for elevator use and satisfies all of the requirements described in the claims, the jig will be an infringement of rights. [Explanation of symbols]

[0093] 1 elevator, 5,6 machine base, 5a,6a U-shaped angle, 10 hoisting machine structure, 11 cage, 12 hoisting machine, 12a hoisting machine motor, 13 counterweight, 14 rope, 19 control panel, 21 hoisting table, 25 deflection wheel, 25a side of deflection wheel, 28 angle, 28a flat part of angle, 30 machine room, 35 dial gauge, 36 pointer of dial gauge, 40 telescopic structure, 41 first tubular member, 42 second tubular member, 43 butterfly bolt, 45 first reinforcement part, 46 second reinforcement part, 47 third reinforcement part, 48 fourth reinforcement part, 50,150,250 jig, 55a side of sheave, 59 floor part of machine room, 60 First portion, 60a,260a first plane of first portion, 62 first extension portion, 62a first end portion of first extension portion, 68 first side surface in the normal direction of first portion, 70 second portion, 70a,270a second plane of second portion, 72 second extension portion, 72a first end portion of second extension portion, 74,274 through hole of second portion, 78 first side surface in the normal direction of second portion, 80,180 connecting portion, 81 opening of connecting portion, 82 recess of connecting portion, 82a bottom of recess, 87 orthogonal extending portion.

Claims

1. An elevator jig capable of determining whether the relative position of a deflector wheel to a hoist sheave is appropriate, A first portion having a first plane that is a substantially flat surface; a second portion having a second plane spaced apart from the first plane and generally parallel to the first plane; a connecting portion connecting a first location located on a first side of the first plane in a normal direction to the first plane in the first portion and a second location located on the first side of the second plane in the normal direction in the second portion, When viewed from above in the vertical direction in a used state, the connecting portion extends so as to have an opening on a second side in the normal direction and a recess having a bottom on a first side in the normal direction, When viewed from above in the vertical direction in the used state, a bottom of the recess has a portion located between the first location and the second location in an extending direction of the first plane, and is located on the first side in the normal direction relative to one of the first plane and the second plane that is located on the first side in the normal direction, Each of the first portion and the second portion has a shape of a flat plate or a square timber, When viewed from above in a vertical direction in the usage state, the first plane is a surface of the first portion on a second side in the normal direction, and the second plane is a surface of the second portion on the second side in the normal direction, When viewed from above in the vertical direction in the used state, the connecting portion has a first extending portion extending from a surface of the first side in the normal direction of the first portion to the first side in the normal direction, a second extending portion extending from a surface of the first side in the normal direction of the second portion to the first side in the normal direction, and an orthogonal direction extending portion connecting a first end portion on a tip side of the first extending portion and a first end portion on a tip side of the second extending portion and extending in an orthogonal direction substantially orthogonal to the normal direction, Both the length of the first extension portion and the length of the second extension portion are extendable and contractible, Each of the first extension portion and the second extension portion has a second cylindrical portion and a first cylindrical portion that can be accommodated in the second cylindrical portion by a desired length portion, The elevator jig further includes a scale capable of calculating the distance in the normal direction between the first plane and the second plane.

2. The elevator tool according to claim 1 , wherein the length of the orthogonal direction extending portion is extendable and contractible.

3. The elevator tool according to claim 1 or 2, wherein the second portion has one or more through holes extending in the normal direction.

4. a first reinforcing portion provided at a corner between the first portion and the first extension portion and reinforcing a connection portion between the first portion and the first extension portion; a second reinforcing portion provided at a corner between the second portion and the second extension portion and reinforcing a connection portion between the second portion and the second extension portion; a third reinforcing portion provided at a corner between the first extension portion and the orthogonal direction extension portion and reinforcing a connection portion between the first extension portion and the orthogonal direction extension portion; a fourth reinforcing portion provided at a corner between the second extension portion and the orthogonal direction extension portion and reinforcing a connection portion between the second extension portion and the orthogonal direction extension portion; The elevator tool according to claim 1 , further comprising:

5. A method for determining whether a relative position of a deflector wheel to a sheave of a hoisting machine is appropriate using the elevator jig according to claim 1, a jig arrangement step of abutting at least a portion of the first plane against one of the side of the sheave and the side of the deflector wheel, while arranging at least a portion of the second plane so as to face the other of the side of the sheave and the side of the deflector wheel in the normal direction; a measuring step of measuring a distance in the normal direction between the second plane and the other side surface at two or more points spaced apart from each other after the jig placement step; a determination step of determining whether or not the relative position of the deflector wheel with respect to the sheave is appropriate based on two or more of the distances measured in the measurement step; A method for determining whether a relative position of a deflector wheel to a sheave of a hoisting machine is appropriate, comprising:

6. A method for positioning a relative position of a deflector wheel to a sheave of a hoisting machine using the elevator jig according to claim 3, comprising: a jig arrangement step of abutting at least a portion of the first plane against one of the side of the sheave and the side of the deflector wheel, while facing at least one of the through holes in the normal direction against the other of the side of the sheave and the side of the deflector wheel; a measuring step of measuring the distance in the normal direction between the second plane and the other side surface at two or more locations spaced apart from each other using the dial gauge by passing a pointer of a dial gauge through the through hole from an opening on the opposite side to the second plane side in the normal direction of the through hole to reduce a length of the pointer; a positioning step of positioning the relative position based on two or more of the distances measured in the measuring step; A method for determining the relative position of a deflector wheel with respect to a sheave of a hoist, comprising:

Images