Cleaning jig and cleaning method

Abstract

To improve working efficiency while securing the safety of sheave cleaning.SOLUTION: The cleaning tool 1 is used for cleaning a sheave around which a rope for pulling a car of an elevator is wound in a state that the sheave is rotated. The sheave comprises a rope groove for supporting the rope. The cleaner 1 has a plate-shaped cleaner base 2 having a cleaner part 3 including a shape along an outer peripheral face of a sheave and a projection part side 3a including a shape along a sheave groove, and a rod-shaped handle 4 extending from a face of the cleaner base 2. The handle 4 is bent so as not to come into contact with the rope extending from the sheave.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a cleaning tool and a cleaning method, and more particularly to a cleaning tool and a cleaning method for an elevator sheave. [Background technology]

[0002] Generally, in a rope-type elevator, one end of the rope is connected to the car, and the other end is connected to a counterweight. The rope is wound around a sheave, and the car is raised and lowered by rotating the sheave with a hoist. During this operation, foreign matter such as rope oil, surrounding dirt, and dust adheres to the sheave as the elevator operates.

[0003] Therefore, a sheave groove cleaning device has been disclosed that can clean various sheave grooves without the need to replace cleaning members (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 02-135588 Summary of the Invention [Problem to be solved by the invention]

[0005] As elevator maintenance, inspection, and cleaning become increasingly performed by one person, conventional sheave cleaning, which requires stopping the sheave when cleaning, is cumbersome and reduces work efficiency. On the other hand, if the sheave is cleaned while rotating to improve work efficiency, it is undesirable from a safety standpoint for workers to approach the sheave. Even the sheave groove cleaning device disclosed in Patent Document 1 cannot solve this problem. [Means for solving the problem]

[0006] The cleaning tool of the present invention is a cleaning tool for cleaning a sheave around which a rope for pulling an elevator car is wound while the sheave is rotating. The sheave has a rope groove that supports the rope. The cleaning tool has a plate-shaped cleaning base having a cleaning portion shaped to conform to the outer surface of the sheave and a protrusion shaped to conform to the rope groove, and a rod-shaped handle extending from the surface of the cleaning base. The handle is characterized by being bent so as not to come into contact with the rope extending from the sheave. [Effects of the Invention]

[0007] According to the cleaning jig and cleaning method of the present invention, it is possible to improve work efficiency while ensuring safety in cleaning sheaves. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing the overall structure of an elevator according to this embodiment. [Figure 2] FIG. 1 is a perspective view illustrating a hoist according to an embodiment of the present invention. [Figure 3] FIG. 2 is a schematic diagram illustrating in detail a sheave according to the present embodiment. [Figure 4] 1A and 1B are schematic diagrams illustrating a cleaning jig according to an embodiment of the present invention. [Figure 5] 4A and 4B are diagrams illustrating the relationship between a sheave and a handle according to the present embodiment. [Figure 6] 4A and 4B are diagrams illustrating the relationship between the cleaning jig and the sheave according to the present embodiment. [Figure 7] 10 is a diagram illustrating a cleaning jig and a sheave provided with a tray on a cleaning base. FIG. [Figure 8] FIG. 10 is a schematic diagram illustrating a cleaning jig provided with a stop operation unit. [Figure 9] FIG. 9 is a diagram illustrating a switch circuit in FIG. 8. [Figure 10] FIG. 9 is a diagram illustrating another example of the switch circuit in FIG. 8. [Figure 11] 11 is a diagram for explaining the relationship between the operation of each contact and the sheave in the switch circuit of FIG. 10. FIG. [Figure 12]3A and 3B are schematic diagrams illustrating a braking operation unit according to the present embodiment. [Figure 13] 4 is a flowchart illustrating a cleaning method according to the present embodiment.

[0009] Hereinafter, with reference to the drawings, embodiments of a cleaning jig and a cleaning method according to the present invention will be described in detail. The embodiments described below are merely examples, and the present invention is not limited to the following embodiments. Furthermore, the present invention also includes forms obtained by selectively combining multiple embodiments and modified examples described below.

[0010] The elevator 100 according to this embodiment will be described in detail with reference to Fig. 1. Fig. 1 is a diagram illustrating the overall structure of the elevator 100 according to this embodiment.

[0011] The elevator 100 is an elevator device that transports people and objects by having a car 10 that carries people and objects and that moves up and down in a hoistway 11 and stops at landings 12 on each floor. The elevator 100 is equipped with a hoisting machine 20 as a drive device that raises and lowers the car 10. In the hoistway 11, a wire rope 30 is installed that is wound around the hoisting machine 20 and has one end connected to the top of the car 10, and a counterweight 31 connected to the other end of the wire rope 30. The elevator 100 also has a control panel 40 as a control device that controls the operation of the elevator 100.

[0012] The control panel 40 receives signals from hall call buttons provided at the halls 12 on each floor for calling the car 10, car buttons provided inside the car 10 for registering the destination floor, etc. Based on these signals, the control panel 40 controls the rotation direction and speed of the motor of the hoisting machine 20, causing the car 10 to rise and fall.

[0013] The hoist 20 according to this embodiment will be described in detail with reference to Figures 2 and 3. Figure 2 is a perspective view illustrating the hoist 20. Figure 3 is a view illustrating the sheave 21 of the hoist 20 in detail.

[0014] The hoisting machine 20 is provided in the hoistway 11 or directly above the hoistway 11. The hoisting machine 20 is provided, for example, in a machine room constructed directly above the hoistway 11. In this case, a hole is provided in the floor of the machine room to allow the wire rope 30 to pass through, and the wire rope 30 is lowered from the hole toward the hoistway 11. The hoisting machine 20 is installed on machine stands 22a, 22b as shown in FIG. 2. A control panel 40 may also be provided in the machine room.

[0015] The hoisting machine 20 includes a motor (not shown) which is a rotary electric motor. It also includes multiple gears, and the motor is connected to the sheave 21 via the multiple gears. The hoisting machine 20 transmits the rotation of the motor to the sheave 21 via the multiple gears, thereby rotating the sheave 21 and raising and lowering the car 10. Note that the hoisting machine 20 may be a gearless hoisting machine in which the motor is not provided with gears and is directly connected to the sheave 21.

[0016] As shown in FIG. 3, sheave 21 includes an outer peripheral surface 23 formed around the entire circumference, and outer peripheral surface 23 has a rope groove 24 for supporting wire rope 30, and wire rope 30 is wound around rope groove 24. Also, as shown in FIG. 3, a further groove (undercut 24a) may be formed within rope groove 24. Forming undercut 24a in rope groove 24 increases the frictional force between sheave 21 and wire rope 30. As a result, it helps to properly wind wire rope 30 and prevents wire rope 30 from slipping.

[0017] The cleaning jig 1 according to this embodiment will be described in detail with reference to Figures 4 to 7. Figure 4 is a schematic diagram illustrating the cleaning jig 1.

[0018] Cleaning jig 1 is a cleaning jig for cleaning outer peripheral surface 23 of sheave 21 while sheave 21 is rotating. There is a problem in that solidified oil, which is a mixture of oil released from wire rope 30 and debris such as dust, accumulates on outer peripheral surface 23. Cleaning jig 1 cleans outer peripheral surface 23 by, for example, removing the solidified oil.

[0019] 4, the cleaning jig 1 has a plate-shaped cleaning base 2 having a cleaning portion 3 shaped to follow the outer peripheral surface 23 of the sheave 21 and a protrusion 3a shaped to follow the rope groove 24, and a rod-shaped handle 4 extending from the surface of the cleaning base 2. As will be described in more detail later, the handle 4 is bent so as not to come into contact with the wire rope 30 extending from the sheave 21.

[0020] As shown in FIG. 4, the cleaning jig 1 has a handle 4 extending from the surface of a plate-shaped cleaning base 2. Here, the handle 4 may be provided with a grip 5. The material of the grip 5 is not particularly limited, but it may be made of rubber, for example. The installation position and number of grips 5 are also not particularly limited, but for example, two grips 5 are installed on the end of the handle 4 on the side where the cleaning base 2 is not installed. As a result, the gripping force is improved compared to when the worker directly grips the handle 4, making the cleaning work easier.

[0021] The shape of the handle 4 will be described in detail with reference to Fig. 5. Fig. 5 is a diagram showing the relationship between the sheave 21 and the handle 4.

[0022] As shown in FIG. 4 , the handle 4 is a rod-shaped member extending from the surface of the cleaning base 2. The handle 4 is held by an operator when cleaning the sheave 21. The material of the handle 4 is not particularly limited, and may be made of metal such as stainless steel. On the other hand, from the viewpoint of weight reduction, the handle 4 may be made of resin such as plastic or wood. Furthermore, the method of joining the cleaning unit 3 and the handle 4 is not particularly limited. The cleaning unit 3 and the handle 4 are integrated by, for example, welding. The size of the handle 4 is not particularly limited, and from the viewpoint of storability, it may be small enough to fit into the grooves of the machine bases 22 a, 22 b. The length of the handle 4 is not particularly limited, but it is preferably long enough so that the part of the handle that the operator grips when the cleaning unit 3 is pressed against the outer circumferential surface 23 is not positioned near the wire rope 30.

[0023] The handle 4 is bent so as not to come into contact with the wire rope 30 when the cleaning unit 3 is brought into contact with the outer circumferential surface 23 of the sheave 21. For example, as shown in FIG. 5 , the handle 4 is bent at two points in the center of the handle 4. Furthermore, the bending positions and number of bends in the handle 4 are not particularly limited as long as it is possible to avoid contact with the wire rope 30. The handle 4 may be bent, for example, near the joint with the cleaning base 2. As described above, by bending the handle 4, cleaning of the sheave 21 can be performed without coming into contact with the wire rope 30 wound around the sheave 21.

[0024] The shape of the end of the handle 4 on the side where the cleaning base 2 is not provided is not particularly limited, and may be L-shaped as shown in Fig. 4. Alternatively, for example, the end may be U-shaped, with the handle 4 split into two. It is preferable that the shape of the end be such that the worker can easily grip it when cleaning the sheave 21 and can apply the force required for cleaning.

[0025] The cleaning base 2 of the cleaning jig 1 will be described in detail with further reference to Fig. 6. Fig. 6 is a diagram illustrating the cleaning base 2 according to this embodiment. For simplicity of the drawing, the handle 4 is not shown in Fig. 6.

[0026] As shown in FIG. 6, the cleaning base 2 has a cleaning unit 3 that includes a shape that follows the outer peripheral surface 23 of the sheave 21. The cleaning unit 3 preferably has a shape that can remove solidified oil that has accumulated on the outer peripheral surface 23. The cleaning unit 3 may, for example, have a blade shape that becomes thinner toward the tip that is pressed against the outer peripheral surface 23. The material of the cleaning unit 3 is not particularly limited, but it is preferably made of a material that can remove solidified oil and the like that has adhered to the sheave 21. For example, it is made of a metal such as stainless steel.

[0027] The cleaning base 2 has a protrusion 3a formed along the rope groove 24 of the sheave 21. In the example shown in FIG. 6, the protrusion 3a has a substantially trapezoidal shape because it is formed to follow the substantially trapezoidal shape of the rope groove 24. Since the shape of the rope groove 24 varies depending on the type of elevator 100, it is preferable that the protrusion 3a be appropriately set to match the shape of the rope groove 24 of the sheave 21 to be cleaned. The material of the cleaning unit 3 is not particularly limited, and, like the cleaning unit 3, it may be made of a metal such as stainless steel, for example.

[0028] As shown in Fig. 6, the protrusions 3a may be shaped so as not to come into contact with the rope grooves 24 when the cleaning unit 3 is pressed against the outer peripheral surface 23. The number of protrusions 3a is not particularly limited, but it is preferable to provide the same number as the rope grooves 24 of the sheave 21. Providing the protrusions 3a on the cleaning base 2 makes it easier to align the cleaning unit 3 and prevents the cleaning unit 3 from shifting from the outer peripheral surface 23 of the sheave 21. Furthermore, it is possible to press the cleaning unit 3 against the outer peripheral surface 23 of the sheave 21 without tilting.

[0029] As shown in Fig. 6, the cleaning base 2 may have guide parts 6 formed to fit the shape of both axial ends of the sheave 21. In the example shown in Fig. 6, the guide parts 6 are formed so that both ends of the cleaning base 2 rise in the central axial direction of the sheave 21. The formation of the guide parts 6 makes alignment even easier and prevents the cleaning part 3 from shifting from the outer circumferential surface 23 of the sheave 21.

[0030] 7, a case where the receiving tray 7 is provided on the cleaning base 2 will be described. FIG. 7 is a diagram illustrating the cleaning jig 1 and sheave 21 in which the receiving tray 7 is provided on the cleaning base 2.

[0031] As shown in FIG. 7, the cleaning base 2 may have a tray 7. The tray 7 is installed, for example, on the surface of the cleaning base 2 opposite to the surface to which the handle 4 is joined. When cleaning the sheave 21, the tray 7 collects foreign matter (solidified oil) removed by the cleaning unit 3 from the outer circumferential surface 23 of the sheave 21 without letting it fall. This prevents the solidified oil from scattering below the sheave 21. The tray 7 may be integrated with the cleaning base 2, or may be detachable.

[0032] The stop operation unit 50 according to this embodiment will be described in detail with reference to Figures 8 to 11. Figure 8 is a diagram illustrating a case where the stop operation unit 50 is provided in the cleaning jig 1.

[0033] The stop operation unit 50 includes a switch, and the switch is provided on the handle 4 of the cleaning jig 1. The stop operation unit 50 is connected to the control panel 40, which stops the rotation of the sheave 21 when the switch is turned OFF. The stop operation unit 50 and the control panel 40 are connected, for example, by inserting a connector 53 provided at the tip of a cable 52 extending from the stop operation unit 50 into an input terminal (not shown) of the control panel 40.

[0034] As described above, the stop operation unit 50 is integrated with the cleaning jig 1. More specifically, the push button switch 51 of the stop operation unit 50 is provided on the handle 4 of the cleaning jig 1. For example, as shown in FIG. 8 , push button switches 51a and 51b may be provided on each of the grips 5 of the handle 4. By providing the push button switch 51 on the handle 4, the worker can hold the cleaning jig 1 with the push button switch 51 pressed down, and in the event of an emergency, release the push button switch 51 to emergency stop the rotation of the sheave 21.

[0035] The push button switch 51 is, for example, a switch that performs momentary operation and automatically returns from the operating state of the contacts. That is, the push button switch 51 is a switch that turns ON when the button is pressed and turns OFF when the button is released.

[0036] 9 to 11, the relationship between the operation of the push button switches 51a, 51b and the sheave 21 will be described in detail, taking as an example a case where two push button switches 51a, 51b are provided in the cleaning jig 1. FIG. 9 shows the switch circuit of the push button switches 51a, 51b in FIG. 8. FIG. 10 shows another example of the switch circuit of the push button switches 51a, 51b in FIG. 8. FIG. 11 is a diagram showing the relationship between the connection status of each contact in FIG. 10 and the operation of the sheave 21. Hereinafter, the path from the a terminal to the common terminal will be referred to as "terminal a-common terminal," and the path from the b terminal to the common terminal will be referred to as "terminal b-common terminal."

[0037] 9 has contacts 54a and 55a connected in series between the a terminal and a common terminal. For example, the common terminal is connected to a power source, and the a terminal is connected to a measuring device that measures the continuity of the circuit.

[0038] As described above, the contact 54a of the push button switch 51a and the contact 55a of the push button switch 51b are connected in series. That is, when the push button switches 51a and 51b are pressed, the contacts 54a and 55a close, shorting the terminal a and the common terminal. The control panel 40 rotates the sheave 21 on the condition that the terminal a and the common terminal are shorted. On the other hand, the control panel 40 stops the rotation of the sheave 21 on the condition that at least one switch is turned OFF. That is, the control panel 40 stops the rotation of the sheave 21 on the condition that at least one of the push button switches 51a and 51b is released and the terminal a and the common terminal are opened.

[0039] Another example of the switch circuit of the push button switches 51a and 51b will be described using FIG. 10. In addition to the switch circuit shown in FIG. 9, the switch circuit shown in FIG. 10 includes a terminal b and a contact 54b and a contact 55b provided in parallel between the terminal b and the common terminal. The terminal b, like the terminal a, is connected to a measuring device that measures the continuity of the circuit. As shown in FIG. 10, the contacts 54a and 54b of the push button switch 51a operate in conjunction with each other. Similarly, the contacts 55a and 55b of the push button switch 51b operate in conjunction with each other. Specifically, when the push button switch 51a is pressed, the contact 54a closes and the contact 54b opens. Similarly, when the push button switch 51b is pressed, the contact 55a closes and the contact 55b opens.

[0040] For example, when push button switch 51a and push button switch 51b are pressed, the a terminal and the common terminal are short-circuited. At the same time, the b terminal and the common terminal are opened. As shown in FIG. 11, the control panel 40 rotates the sheave 21 only when the a terminal and the common terminal are short-circuited and the b terminal and the common terminal are opened. In other words, the sheave 21 rotates only when push button switches 51a and 51b are pressed. On the other hand, the sheave 21 is stopped in any connection state other than the above-mentioned connection state in which the a terminal and the common terminal are short-circuited and the b terminal and the common terminal are opened. As a result, if an emergency occurs while cleaning the sheave 21, the rotation of the sheave 21 can be stopped by releasing at least one of the push button switches 51a and 51b.

[0041] The b terminal-common terminal is provided as a countermeasure against failure of the a terminal-common terminal. For example, if some kind of failure causes contacts 54a and 55a to remain closed and not open, the a terminal-common terminal is recognized as being short-circuited. However, if at least one of contacts 54b and 55b operates normally, releasing push button switches 51a and 51b shorts the b terminal-common terminal, stopping the rotation of sheave 21. As described above, having a path from the b terminal to the common terminal makes it possible to more reliably perform an emergency stop.

[0042] The brake operating unit 60 according to this embodiment will be described in detail with reference to Fig. 12. Fig. 12 is a diagram illustrating the brake operating unit 60.

[0043] The brake operating unit 60 is, for example, a pedal switch 60. The pedal switch 60 is connected to the control panel 40 via a cable 63 extending from the pedal switch 60. The control panel 40 brakes the rotation of the sheave 21 when a tread portion 61 of the pedal switch 60 is depressed.

[0044] The pedal switch 60 may have a latch 62, as shown in Fig. 12. The latch 62 temporarily maintains a depressed state when the step plate 61 is depressed. The configuration of the latch 62 is not particularly limited as long as it can temporarily maintain a depressed state when the step plate 61 is depressed.

[0045] As shown in FIG. 12 , the latch 62 has a rod-shaped movable portion that moves in conjunction with the footplate 61 and is provided in an L-shaped hole. A horizontal force is constantly applied to the rod-shaped movable portion by a spring or the like. When the footplate 61 is depressed, the latch 62 changes from the state shown in FIG. 12(A) to the state shown in FIG. 12(B). In the state shown in FIG. 12(B), the footplate 61 does not rise unless the worker releases the latch 62. This prevents the footplate 61 from rising even when the worker stops stepping down, and the control panel 40 does not resume rotation of the sheave 21 unless the footplate 61 is released. As a result, safety during cleaning of the sheave 21 can be further improved. After confirming safety, if the worker wishes to perform cleaning work again, the worker returns the latch 62 to the state shown in FIG. 12(A) and rotates the sheave 21 again to perform cleaning.

[0046] The cleaning jig 1 may have both a stop operation unit 50 and a brake operation unit 60. The stop operation unit 50 and the brake operation unit 60 are connected to a control panel 40. The control panel 40 controls the rotation of the sheave 21 based on the state of the push button switch 51 of the stop operation unit 50 and the brake operation unit 60 (pedal switch 60). By having both the stop operation unit 50 and the brake operation unit 60, cleaning of the sheave 21 can be performed more safely.

[0047] The cleaning method according to this embodiment will be described in detail with reference to Fig. 13. Fig. 13 is a flowchart showing the cleaning method for the sheave 21. The description will be made with reference to Figs. 5 and 6 as necessary.

[0048] As shown in Fig. 13, first, the sheave 21 is rotated (step S1). Here, it is preferable that the sheave 21 rotates at a slower speed than the sheave 21 rotates during normal operation. The slower speed rotation may be achieved, for example, by giving a control instruction to the control panel 40 from a mobile information terminal carried by an operator. Furthermore, the control panel 40 may rotate on the condition that at least one of the stop operation unit 50 and the brake operation unit 60 is connected.

[0049] When the sheave 21 starts to rotate, the worker presses the cleaning jig 1 against the sheave 21 to clean the sheave 21 (step S2). Here, the cleaning jig is the cleaning jig 1 provided with the stop operation unit 50. The sheave 21 is cleaned, for example, by pressing the cleaning part 3 of the cleaning jig 1 against the outer circumferential surface 23 of the sheave 21, as shown in FIGS. 5 and 6.

[0050] If an emergency occurs during the cleaning work of sheave 21 (YES in step S3), the rotation of sheave 21 is brought to an emergency stop (step S4). Here, the emergency stop may be performed by the stop operation unit 50. That is, when an operator senses an emergency, he or she will release at least one of push button switches 51a and 51b, causing control panel 40 to stop the rotation of sheave 21.

[0051] If no emergency has occurred (NO in step S3), the worker continues cleaning the sheave 21. If cleaning of the entire circumference of the sheave 21 has not been completed (NO in step S5), the worker continues cleaning while maintaining the rotation of the sheave 21. On the other hand, if cleaning of the entire circumference of the sheave 21 has been completed (YES in step S5), the worker stops the rotation of the sheave 21 and ends cleaning of the sheave 21 (step S6).

[0052] As described above, the cleaning tool and cleaning method having the above configuration make it possible to clean the sheave 21 of the elevator 100 without temporarily stopping the rotation of the sheave 21. Furthermore, it is possible to improve work efficiency while ensuring the safety of the worker.

[0053] The present invention is further illustrated by the following embodiments. Configuration 1: A cleaning tool for cleaning a sheave around which a rope for pulling an elevator car is wound while the sheave is rotating, The sheave includes a rope groove for supporting the rope; a plate-shaped cleaning base having a cleaning portion having a shape that follows the outer circumferential surface of the sheave and a protrusion portion having a shape that follows the sheave groove; a rod-shaped handle extending from a surface of the cleaning base; and The cleaning jig has a handle bent so as not to come into contact with the rope extending from the sheave. Configuration 2: The elevator includes a control device that controls the operation of the sheave, a stop operation unit connected to the control device, including a switch, the switch being provided on the handle; The cleaning jig according to configuration 1, wherein the control device stops the rotation of the sheave when the switch is turned off. Configuration 3: The elevator includes a control device that controls the operation of the sheave, a pedal switch connected to the control device as a braking operation unit; The cleaning jig according to configuration 1, wherein the control device brakes the rotation of the sheave when the pedal switch is depressed. Configuration 4: The cleaning jig according to any one of configurations 1 to 3, wherein the cleaning base has guide portions that match the shapes of both axial end portions of the outer circumferential surface of the sheave. Configuration 5: The cleaning jig according to any one of configurations 1 to 4, wherein the cleaning base has a tray for collecting foreign matter cleaned by the cleaning unit. Configuration 6: The elevator includes a control device that controls the operation of the sheave, a stop operation unit connected to the control device, including a switch, the switch being provided on the handle; a pedal switch connected to the control device as a braking operation unit; and The cleaning jig described in configuration 1, wherein the control device stops the rotation of the sheave when the switch is turned OFF, and brakes the rotation of the sheave when the pedal switch is depressed. Configuration 7: A cleaning step of pressing the cleaning portion of the cleaning jig according to any one of configurations 1 to 6 against the sheave to perform cleaning; a stopping operation step for stopping the rotation of the sheave in an emergency; cleaning methods, including [Explanation of symbols]

[0054] 1 cleaning jig, 2 cleaning base, 3 cleaning part, 3a protrusion, 4 handle, 5 grip, 6 guide part, 7 tray, 10 car, 11 elevator shaft, 12 landing, 20 hoist, 21 sheave, 22a, 22b machine base, 23 outer surface, 24 rope groove, 24a undercut, 30 wire rope, 31 counterweight, 40 control panel, 50 stop operation part, 51, 51a, 51b push button switch, 52 cable, 53 connector, 54a, 54b, 55a, 55b contacts, 60 braking operation part, 61 tread part, 62 latch, 63 cable

Claims

1. A cleaning tool for cleaning a sheave around which a rope for pulling an elevator car is wound while the sheave is rotating, The sheave includes a rope groove for supporting the rope; a plate-shaped cleaning base having a cleaning portion having a shape that follows the outer circumferential surface of the sheave and a protrusion portion having a shape that follows the sheave groove; a rod-shaped handle extending from a surface of the cleaning base; and The cleaning jig has a handle bent so as not to come into contact with the rope extending from the sheave.

2. The elevator includes a control device that controls operation of the sheave, a stop operation unit connected to the control device, including a switch, the switch being provided on the handle; The cleaning jig according to claim 1 , wherein the control device stops the rotation of the sheave when the switch is turned OFF.

3. The elevator includes a control device that controls operation of the sheave, a pedal switch connected to the control device as a braking operation unit; The cleaning jig according to claim 1 , wherein the control device brakes the rotation of the sheave when the pedal switch is depressed.

4. The cleaning jig according to claim 1 , wherein the cleaning base has guide portions that match the shapes of both axial end portions of the outer peripheral surface of the sheave.

5. The cleaning jig according to any one of claims 1 to 4, wherein the cleaning base has a tray for collecting foreign matter cleaned by the cleaning unit.

6. The elevator includes a control device that controls operation of the sheave, a stop operation unit connected to the control device, including a switch, the switch being provided on the handle; a pedal switch connected to the control device as a braking operation unit; and The cleaning jig according to claim 1, wherein the control device stops the rotation of the sheave when the switch is turned OFF, and brakes the rotation of the sheave when the pedal switch is depressed.

7. a cleaning step of pressing the cleaning portion of the cleaning jig according to claim 1 against the sheave to perform cleaning; a stopping operation step for stopping the rotation of the sheave in an emergency; cleaning methods, including

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