Method for determining the holding device and rope length

Abstract

The present invention provides a holding device that can reduce the burden on workers when determining the length of an elevator rope. [Solution] The holding device 30 comprises a fixing device 31 and an extension device 32. The extension device 32 has a through hole 33 for passing the rope 3 through and is extendable along the through hole 33. The extension device 32, positioned between the fixing device 31 fixed to the end of the rope 3 and the rope shackle 20, extends with the end of the rope 3 positioned to pass through the through hole 33, thereby moving the fixing device 31 away from the second opening 26.

Description

Technical Field

[0001] The present disclosure relates to a holding device and a method for determining the length of a rope.

Background Art

[0002] Patent Document 1 describes a maintenance device for a rope. The maintenance device described in Patent Document 1 is used, for example, to remove the load acting on the rope when replacing or shortening the rope connected to the elevator car. When using this maintenance device, after the load acting on the rope is removed, an operation is required to determine the length of the new rope during rope replacement or the length of the rope during rope shortening.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventionally, in the operation for determining the length of a rope, one worker pulls the rope and the rope shackle for connecting the ropes, and another worker attaches a mark for determining the length of the rope to the rope. For this reason, there is a problem that the burden on the workers is large.

[0005] The present disclosure has been made to solve the above problems. An object of the present disclosure is to provide a holding device that can reduce the burden on workers in the operation for determining the length of an elevator rope. Another object of the present disclosure is to provide a method for determining the rope length using the holding device.

Means for Solving the Problems

[0006] The maintenance device relating to this disclosure is used to determine the length of a rope that suspends an elevator car. The retaining device comprises a fixing device that can be fixed to the rope, and an extendable device having a first through-hole for passing the rope through and being extendable along the first through-hole. In a first state in which the rope is passed through a rope shackle from a first opening and the end of the rope is positioned to protrude from a second opening of the rope shackle, the extendable device positioned between the fixing device fixed to the end and the rope shackle extends with the end positioned to pass through the first through-hole, thereby moving the fixing device away from the second opening.

[0007] The method for determining the length of a rope according to this disclosure is a method for determining the length of a rope using the above-mentioned holding device, comprising: a first step of passing the rope through a rope shackle from a first opening and positioning the end of the rope so that it protrudes from a second opening; a second step of positioning the extension device after the first step so that the end of the rope passes through a first through-hole; a third step of fixing a fixing device to the end of the rope so that the extension device is positioned between the rope shackle and the extension device after the second step; a fourth step of extending the extension device and moving the fixing device away from the second opening after the third step; and a fifth step of assigning a reference position to the rope after the fourth step.

[0008] The maintenance device relating to this disclosure is used to determine the length of a rope that suspends an elevator car. The retaining device comprises a fixing device that can be fixed to the rope, an extendable device having a first through-hole for passing the rope and being extendable along the first through-hole, an auxiliary rope, and a connector for connecting the auxiliary rope to the rope. In a first state in which the rope is passed through a rope shackle from a first opening and the auxiliary rope is connected to the end of the rope protruding from a second opening of the rope shackle via the connector, the extendable device positioned between the fixing device fixed to the auxiliary rope and the rope shackle extends in such a state that at least one of the ends or the auxiliary rope passes through the first through-hole, thereby moving the fixing device away from the second opening.

[0009] The method for determining the length of a rope according to the present disclosure is a method for determining the length of a rope using the above-mentioned holding device, comprising: a first step of passing the rope through a rope shackle from a first opening and positioning the end of the rope so that it protrudes from a second opening; a second step of connecting an auxiliary rope to the end of the rope via a connector after the first step; a third step of positioning an extension device after the second step so that at least one of the end of the rope or the auxiliary rope passes through a first through hole; a fourth step of fixing a fixing device to the auxiliary rope so that the extension device is positioned between the rope shackle and the extension device after the third step; a fifth step of extending the extension device and moving the fixing device away from the second opening after the fourth step; and a sixth step of assigning a reference position to the rope after the fifth step. [Effects of the Invention]

[0010] According to this disclosure, the burden on workers can be reduced in the process of determining the length of an elevator rope. [Brief explanation of the drawing]

[0011] [Figure 1] This is a diagram showing an example of an elevator system. [Figure 2] This is a diagram showing the details of part A in Figure 1. [Figure 3] This figure shows an example of a holding device in Embodiment 1. [Figure 4] This figure shows an example of an expandable / contractor. [Figure 5] This flowchart shows an example of a procedure for determining the length of a rope using a holding device. [Figure 6] This figure shows another example of an expandable joint. [Figure 7] This figure shows another example of the holding device in Embodiment 1. [Figure 8] This figure shows an example of a spacer. [Figure 9] This figure shows another example of a spacer. [Figure 10] This figure shows another example of the holding device in Embodiment 1. [Figure 11] It is a figure which shows another example of the holding device in Embodiment 1.

Embodiment for Carrying out the Invention

[0012] The following gives a detailed description with reference to the drawings. Duplicate descriptions will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

[0013] Embodiment 1. FIG. 1 is a diagram showing an example of an elevator device. First, referring to FIG. 1, the elevator device will be described. The elevator device includes a car 1 and a counterweight 2. The car 1 and the counterweight 2 are suspended in a hoistway 4 by a rope 3. The rope 3 is, for example, a wire rope. FIG. 1 shows an elevator device of a 1:1 roping system as an example.

[0014] The rope 3 is wound around a hoisting machine 5. A control device 6 controls the hoisting machine 5. By the control device 6 controlling the hoisting machine 5, the car 1 moves up and down in the hoistway 4. The counterweight 2 moves up and down in the hoistway 4 in a direction opposite to the direction in which the car 1 moves.

[0015] In a pit 7 of the hoistway 4, a buffer 8 for the car 1 and a buffer 9 for the counterweight 2 are provided. The buffer 8 is arranged directly below the car 1. The buffer 9 is arranged directly below the counterweight 2.

[0016] FIG. 2 is a diagram showing details of part A in FIG. 1. A rope shackle 20 is a device for connecting the terminal of the rope 3. In an elevator device of a 1:1 roping system as shown in FIG. 1, the rope 3 is connected to the car 1 via the rope shackle 20. FIG. 2 shows an example in which the rope 3 is connected to a beam 10 provided on the car 1 via the rope shackle 20. In a 2:1 roping system elevator device, the rope 3 is connected to a fixed body of the hoistway 4 via the rope shackle 20.

[0017] The rope shackle 20 includes, for example, a rod 21, a bearing 22, a spring 23, and a shackle body 24.

[0018] The rod 21 is a rod-shaped member. The rod 21 is arranged to penetrate the beam 10. The bearing 22 is provided at the lower end of the rod 21. The bearing 22 is arranged below the beam 10. The spring 23 is arranged between the beam 10 and the bearing 22. The bearing 22 receives a downward force from the spring 23.

[0019] The shackle body 24 is the part where the rope 3 is actually connected. The shackle body 24 is provided at the upper end of the rod 21. For example, the shackle body 24 is a hollow member. A first opening 25 and a second opening 26 that communicate with the internal space are formed in the shackle body 24. The second opening 26 communicates with the first opening 25 through the internal space of the shackle body 24. The first opening 25 is an opening for connecting the rope 3. FIG. 2 shows an example in which the rope 3 is connected to the shackle body 24 by being wound around a wedge (not shown) inside the shackle body 24. The rope 3 may be connected to the shackle body 24 by other connection methods.

[0020] Part B in FIG. 1 is the same as part A in FIG. 1. In an elevator device with a 1:1 roping method as shown in FIG. 1, the other end of the rope 3 is connected to the counterweight 2 via a rope shackle.

[0021] In elevator systems, when the rope 3 becomes old, it is replaced with a new rope 3. Also, in elevator systems, when the rope 3 stretches and it becomes impossible to maintain a sufficient gap between the counterweight 2 and the buffer 9, the rope 3 is shortened. In such rope replacement and shortening operations, it is necessary to appropriately determine the length of the rope 3 and then connect the rope 3 to the rope shackle 20 at the determined length. The holding device 30 used to determine the length of the rope 3 is described below. The holding device 30 may be used in both rope replacement and shortening operations. The holding device 30 may also be used in other operations where it is necessary to determine the length of the rope 3.

[0022] Figure 3 shows an example of the holding device 30 in Embodiment 1. When rope 3 is being replaced, the rope 3 shown in Figure 3 is a new rope. When rope 3 is being shortened, the rope 3 shown in Figure 3 is the rope before it is shortened. As shown in Figure 3, the rope 3 connected to the rope shackle 20 is passed through the shackle body 24 from the first opening 25, and the end of the rope 3 is positioned to protrude from the second opening 26. Hereafter, the state of the rope 3 passing through the shackle body 24 as shown in Figure 3 will also be referred to as the first state.

[0023] In the example shown in this embodiment, the length of the rope 3 is determined by marking the rope 3 with the marker 11. This marking must be performed with the rope shackle 20 pulled upward and the end of the rope 3 pulled downward so that there is no slack in the entire rope 3. The holding device 30 is used to maintain this state. The holding device 30 includes, for example, a fixing device 31 and an extension device 32.

[0024] The fixing device 31 can be fixed to any position on the rope 3. Furthermore, the fixing device 31 can be removed from the rope 3 by performing a specific release operation on the fixing device 31 fixed to the rope 3. In other words, the fixing device 31 is detachable from the rope 3. Figure 3 shows an example in the first state in which the fixing device 31 is fixed to the end of the rope 3 that is positioned to protrude from the second opening 26.

[0025] The fixing device 31 may be a dedicated device or an existing device such as a vice grip. If a vice grip is used as the fixing device 31, the part of the vice grip that grips the rope 3 may be made cushioned or molded to match the outer shape of the rope 3 to prevent damage to the rope 3.

[0026] The telescopic device 32 has a through hole 33 for passing the rope 3 through. The telescopic device 32 is extendable and retractable along the through hole 33. When the telescopic device 32 is positioned so that the rope 3 passes through the through hole 33, the telescopic device 32 becomes extendable and retractable in the direction along the rope 3.

[0027] Figure 4 shows an example of an expandable device 32. In the example shown in Figure 4, the expandable device 32 comprises a cylindrical first member 34 and a cylindrical second member 35. A male thread is formed on the outer circumferential surface 34a of the first member 34. A female thread is formed on the inner circumferential surface 35a of the second member 35. The outer circumferential surface 34a and the inner circumferential surface 35a face each other. The male thread formed on the outer circumferential surface 34a engages with the female thread formed on the inner circumferential surface 35a. Therefore, as the first member 34 rotates around its axis relative to the second member 35, the overall length of the expandable device 32 (the length along the axis) changes. Note that the first member 34 may have a female thread structure and the second member 35 may have a male thread structure.

[0028] Furthermore, in the examples shown in Figures 3 and 4, the through-hole 33 consists of the hollow of the first member 34 and the hollow of the second member 35. The through-hole 33 opens at the surface 34b formed on the first member 34. The through-hole 33 opens at the surface 35b formed on the second member 35. In the example shown in Figure 4, the surfaces 34b and 35b are flat surfaces.

[0029] Next, a method for determining the length of the rope 3 using the holding device 30 will be described. Figure 5 is a flowchart showing an example of the procedure for determining the length of the rope 3 using the holding device 30.

[0030] First, the worker passes the rope 3 through the first opening 25 to the shackle body 24 of the rope shackle 20, positioning the rope 3 so that the end of the rope 3 protrudes from the second opening 26. In other words, the worker positions the rope 3 in the first state (S101).

[0031] After S101, the worker positions the telescopic device 32 so that the end of the rope 3 passes through the through hole 33 (S102). At this time, it is preferable that the telescopic device 32 is positioned in its most retracted state as shown in Figure 3.

[0032] After S102, the worker secures the fixing device 31 to the end of the rope 3 (S103). At this time, the worker secures the fixing device 31 so that the telescopic device 32 is positioned between the shackle body 24 of the rope shackle 20 and the fixing device 31.

[0033] After S103, the worker extends the telescopic device 32 (S104). In the state where the fixing device 31 is fixed in S103, the surface 34b of the telescopic device 32 faces the portion of the shackle body 24 that forms the second opening 26, and the surface 35b faces the fixing device 31. When the telescopic device 32 is extended in this state, the surface 34b comes into contact with the portion that forms the second opening 26, and the surface 35b comes into contact with the fixing device 31. As the telescopic device 32 is further extended, the fixing device 31 moves away from the second opening 26 by being pushed by the telescopic device 32. That is, when the telescopic device 32 is extended in S104, the rope shackle 20 is pulled upward and the rope 3 is pulled downward.

[0034] Then, the worker begins extending the telescopic device 32 and stops the operation when there is no slack in the rope 3. This ensures that the rod 21 is facing vertically and the rope 3 is held in place with no slack in the rope 3.

[0035] After S104, the worker uses marker 11 to mark a reference position on rope 3 (S105). The reference position is the reference position for where rope 3 will be cut. The reference position does not have to be the exact position where rope 3 will be cut.

[0036] Thus, in the example shown in this embodiment, in the first state in which the rope 3 is positioned to pass through the shackle body 24, the extension device 32 is positioned between the fixing device 31 fixed to the end of the rope 3 and the rope shackle 20. When the extension device 32 extends, the fixing device 31 moves away from the second opening 26.

[0037] Therefore, in the example shown in this embodiment, the holding device 30 can hold the rope shackle 20 pulled upward and the end of the rope 3 pulled downward. The worker does not need to continue pulling the rope 3 downward until the marking on the rope 3 is completed. Thus, the burden on the worker can be reduced in the work of determining the length of the rope 3. By using the holding device 30, it is also possible to perform the work by one person.

[0038] In this embodiment, an example in which the rope 3 is connected to the rope shackle 20 from above has been described. However, in an elevator system with a 2:1 roping system, for example, the rope 3 is connected to the rope shackle 20 from below. In such an elevator system as well, the holding device 30 may be used in the process of determining the length of the rope 3.

[0039] Other examples in which the holding device 30 can be employed are described below. The holding device 30 may be employed in combination with several of the examples shown below, if possible.

[0040] Figure 6 shows another example of the telescopic device 32. In Figure 6, a portion of the shackle body 24 is shown by a dashed line. In the telescopic device 32 shown in Figure 6, when the telescopic device 32 is positioned between the shackle body 24 of the rope shackle 20 and the fixing device 31 fixed to the end of the rope 3 in the first state, the through hole 33 faces the second opening 26.

[0041] Furthermore, in the telescopic device 32 shown in Figure 6, the surface 34b through which the through hole 33 opens is formed to match the shape of the portion of the shackle body 24 that forms the second opening 26. Specifically, in the telescopic device 32 shown in Figure 6, at least a portion of the surface 34b of the first member 34 is curved, and this curved surface is formed to make surface contact with the portion that forms the second opening 26. Therefore, with the telescopic device 32 shown in Figure 6, the telescopic device 32 can always be positioned in a suitable orientation relative to the shackle body 24. For example, the curved surface is formed such that when the surface 34b makes surface contact with the portion that forms the second opening 26, the central axis of the through hole 33 is aligned with the central axis of the rod 21. In this example, when the telescopic device 32 is extended, the rope shackle 20 is less likely to become tilted, and the load on the rope 3 can be reduced.

[0042] The telescopic device 32 shown in Figure 6 may further be equipped with a rotation stopper to prevent the telescopic device 32 from rotating relative to the shackle body 24 of the rope shackle 20 when the curved surface of the surface 34b is in surface contact with the portion forming the second opening 26.

[0043] Figure 7 shows another example of the holding device 30 in Embodiment 1. The holding device 30 shown in Figure 7 further includes a spacer 36 in addition to the fixing device 31 and the extension device 32. Note that Figure 7 shows an example in which the holding device 30 has two spacers 36. As other examples, the holding device 30 may have one spacer 36, or it may have three or more spacers 36.

[0044] Figure 8 shows an example of a spacer 36. In the preferred examples shown in Figures 7 and 8, the spacer 36 is a cylindrical member. The spacer 36 has a through hole 37 for passing the rope 3 through. The through hole 37 is formed along the central axis. The through hole 37 is also opened at surfaces 36a and 36b formed on the spacer 36. In the example shown in Figure 8, surfaces 36a and 36b are flat surfaces.

[0045] When determining the length of the rope 3 using spacers 36, in addition to steps S101 to S105 shown in Figure 5, it is necessary to position the spacers 36 so that the end of the rope 3 passes through the through hole 37. This step is performed between steps S101 and S102 or between steps S102 and S103. Figure 7 shows an example where this step is performed between steps S101 and S102.

[0046] In the first state, the spacer 36 should be positioned together with the telescopic device 32 between the shackle body 24 of the rope shackle 20 and the fixing device 31 fixed to the end of the rope 3. In the example shown in Figure 7, the spacer 36 is positioned between the shackle body 24 and the telescopic device 32, and the telescopic device 32 is positioned between the spacer 36 and the fixing device 31. Therefore, the surface 36a of the spacer 36 faces the portion of the shackle body 24 that forms the second opening 26.

[0047] In the state shown in Figure 7, when the telescopic device 32 is extended at S104, surface 36a contacts the forming portion of the second opening 26, surface 36b contacts surface 34b of the telescopic device 32, and surface 35b of the telescopic device 32 contacts the fixing device 31. Then, as the telescopic device 32 is further extended, the fixing device 31 moves away from the second opening 26 by being pushed by the telescopic device 32. That is, when the telescopic device 32 is extended at S104, the rope shackle 20 is pulled upward and the rope 3 is pulled downward.

[0048] The holding device 30 is equipped with a spacer 36, which allows the distance between the shackle body 24 and the telescopic device 32 when extending the telescopic device 32 to be set to a desired value. This allows the telescopic device 32 to be positioned in an easily operable location, thereby improving the operability of the holding device 30.

[0049] Figure 9 shows another example of the spacer 36. In Figure 9, a portion of the shackle body 24 is shown by a dashed line. In the spacer 36 shown in Figure 9, when the spacer 36 is positioned between the shackle body 24 and the extension device 32 of the rope shackle 20 in the first state, the through hole 37 faces the second opening 26.

[0050] Furthermore, in the spacer 36 shown in Figure 9, the surface 36a through which the through hole 37 opens is formed to match the shape of the portion of the shackle body 24 that forms the second opening 26. Specifically, in the spacer 36 shown in Figure 9, at least a portion of the surface 36a is curved, and this curved surface is formed to make surface contact with the portion that forms the second opening 26. Therefore, with the spacer 36 shown in Figure 9, the spacer 36 and the telescopic device 32 can always be positioned in a suitable orientation relative to the shackle body 24. For example, the curved surface is formed such that when the surface 36a makes surface contact with the portion that forms the second opening 26, the central axes of the through hole 37 and the through hole 33 are aligned with the central axis of the rod 21. In this example, when the telescopic device 32 is extended, the rope shackle 20 is less likely to become tilted, and the load on the rope 3 can be reduced.

[0051] The spacer 36 shown in Figure 9 may further be equipped with an anti-rotation mechanism to prevent the spacer 36 from rotating relative to the shackle body 24 of the rope shackle 20 when the curved surface of the surface 36a is in surface contact with the forming portion of the second opening 26.

[0052] Figure 10 shows another example of the holding device 30 in Embodiment 1. The holding device 30 shown in Figure 10 further comprises an auxiliary rope 38 and a connector 39, in addition to the fixing device 31 and the extension device 32. Figure 10 shows an example that is effective when the length of the rope 3 is insufficient.

[0053] The auxiliary rope 38 may have a different diameter from the rope 3, but it is preferable that it has the same diameter as the rope 3. The connector 39 is a component for connecting the auxiliary rope 38 to the rope 3. That is, the auxiliary rope 38 is connected to the end of the rope 3 via the connector 39. In the example shown below, the state of the rope 3 passing through the shackle body 24 as shown in Figure 9 is also called the first state. That is, in the first state, the rope 3 connected to the rope shackle 20 is passed through the shackle body 24 from the first opening 25, and the auxiliary rope 38 is connected to the end of the rope 3 protruding from the second opening 26 via the connector 39.

[0054] When determining the length of rope 3 using auxiliary rope 38 and connector 39, in addition to steps S101 to S105 shown in Figure 5, a step of connecting the auxiliary rope 38 to the end of rope 3 via connector 39 is required. This step is performed between steps S101 and S102. In this example, this step is performed after S101, so that rope 3 is positioned in the first state.

[0055] After the first step is performed and the auxiliary rope 38 is connected to the end of the rope 3 via the connector 39, the worker then positions the telescopic device 32 so that at least one of the ends of the rope 3 or the auxiliary rope 38 passes through the through hole 33 (S102). After S102, the worker fixes the fixing device 31 to the auxiliary rope 38 so that the telescopic device 32 is positioned between the shackle body 24 and the fixing device 31 (S103). After S103, the worker extends the telescopic device 32 in S104 and marks the reference position on the rope 3 using the marker 11 in S105. Even in the example shown in Figure 10, the holding device 30 can maintain the state in which the rope shackle 20 is pulled upward and the end of the rope 3 is pulled downward.

[0056] Figure 11 shows another example of the holding device 30 in Embodiment 1. The holding device 30 shown in Figure 11 further comprises a spacer 36, an auxiliary rope 38, and a connector 39, in addition to the fixing device 31 and the extension device 32. If the length of the rope 3 is insufficient and the auxiliary rope 38 is connected to the end of the rope 3 via the connector 39, the spacer 36 may also be used to determine the length of the rope 3, as shown in Figure 11. In such a case, the spacer 36 may be placed between the shackle body 24 and the extension device 32, or between the extension device 32 and the fixing device 31. The spacer 36 is positioned so that at least one of the ends of the rope 3 or the auxiliary rope 38 passes through the through hole 37.

[0057] Examples of aspects that may be included in this disclosure are listed below as an addendum.

[0058] [Note 1] A holding device used to determine the length of the rope that suspends the elevator car, A fixing device that can be fixed to the aforementioned rope, A telescopic device having a first through-hole for passing the rope through, and which is extendable and retractable along the first through-hole, Equipped with, In a first state in which the rope is passed through a rope shackle from a first opening and the end of the rope is positioned to protrude from a second opening of the rope shackle, the holding device moves the fixing device away from the second opening by extending the fixing device, which is fixed to the end of the rope, between the fixing device and the rope shackle, with the end of the rope positioned to pass through the first through hole. [Note 2] The expansion and contraction device has a surface formed on which the first through hole opens. In the first state, when the telescopic device is positioned between the rope shackle and the fixing device, the first through hole faces the second opening. The holding device according to Appendix 1, wherein at least a portion of the surface is a curved surface for surface contact with the portion of the rope shackle that forms the second opening. [Note 3] A holding device used to determine the length of the rope that suspends the elevator car, A fixing device that can be fixed to the aforementioned rope, A telescopic device having a first through-hole for passing the rope through, and which is extendable and retractable along the first through-hole, Auxiliary rope and A connector for connecting the auxiliary rope to the main rope, Equipped with, In a first state in which the rope is passed through a rope shackle from a first opening and the auxiliary rope is connected to the end of the rope protruding from a second opening of the rope shackle via the connector, the holding device moves the fixing device away from the second opening by extending the retractable device, which is positioned between the fixing device fixed to the auxiliary rope and the rope shackle, with the end of the rope or at least one of the auxiliary rope passing through the first through hole. [Note 4] The holding device according to Appendix 1 or Appendix 3, further comprising a second through-hole for passing the rope through, and a spacer positioned between the rope shackle and the telescopic device in the first state. [Note 5] The spacer has a surface formed on which the second through hole opens. When the spacer is positioned between the rope shackle and the telescopic device in the first state, the second through hole faces the second opening. The holding device according to Appendix 4, wherein at least a portion of the surface is a curved surface for surface contact with the portion of the rope shackle that forms the second opening. [Note 6] The retaining device according to Appendix 5, wherein the spacer is equipped with a rotation stopper to prevent the spacer from rotating relative to the rope shackle when the surface is in surface contact with the portion. [Note 7] The aforementioned expandable device is A cylindrical first member having either an external or internal thread formed on its outer surface, A cylindrical second member having the other of a male or female thread that engages with the other formed on its inner circumferential surface, A holding device as described in any one of the appendices 1 to 6, which is equipped with the following: [Note 8] A method for determining the length of the rope using a holding device described in any one of Appendix 1, Appendix 2, or Appendix 4 through Appendix 7 (however, for Appendix 4 through Appendix 7, only when referring to Appendix 1), The first step is to pass the rope through the first opening to the rope shackle and position the end of the rope so that it protrudes from the second opening, A second step is to position the telescopic device after the first step such that the end of the rope passes through the first through hole, A third step is to fix the fixing device to the end so that the telescopic device is positioned between the rope shackle and the extension device, A fourth step is to extend the telescopic device and move the fixing device away from the second opening, After the fourth step, a fifth step is to mark a reference position on the rope, A method for determining rope length, equipped with [a specific feature / tool]. [Note 9] A method for determining the length of the rope using a holding device described in any one of the appendices 3 to 7 (however, for appendices 4 to 7, only when referring to appendice 3), The first step is to pass the rope through the first opening to the rope shackle and position the end of the rope so that it protrudes from the second opening, A second step is to connect the auxiliary rope to the end of the rope via the connector, A third step is to position the telescopic device after the second step, such that the end of the rope or at least one of the auxiliary ropes passes through the first through hole, A fourth step is to fix the fixing device to the auxiliary rope so that the telescopic device is positioned between the rope shackle and the rope shackle, Following the fourth step, the fifth step involves extending the telescopic device and moving the fixing device away from the second opening, After the fifth step, a sixth step is to mark a reference position on the rope, A method for determining rope length, equipped with [a specific feature / tool]. [Explanation of Symbols]

[0059] 1 Cage, 2 Counterweight, 3 Rope, 4 Hoistway, 5 Hoisting machine, 6 Control device, 7 Pit, 8 Shock absorber, 9 Shock absorber, 10 Beam, 11 Marker, 20 Rope shackle, 21 Rod, 22 Receiving plate, 23 Spring, 24 Shackle body, 25 First opening, 26 Second opening, 30 Holding device, 31 Fixing device, 32 Telescopic device, 33 Through hole, 34 First member, 34a Outer surface, 34b Surface, 35 Second member, 35a Inner surface, 35b Surface, 36 Spacer, 37 Through hole, 38 Auxiliary rope, 39 Connector

Claims

1. A holding device used to determine the length of the rope that suspends the elevator car, A fixing device that can be fixed to the aforementioned rope, A telescopic device having a first through-hole for passing the rope through, and which is extendable and retractable along the first through-hole, Equipped with, In a first state in which the rope is passed through a rope shackle from a first opening and the end of the rope is positioned to protrude from a second opening of the rope shackle, the holding device moves the fixing device away from the second opening by extending the retractable device, which is positioned between the fixing device fixed to the end of the rope and the rope shackle, with the end of the rope positioned to pass through a first through-hole.

2. The expansion and contraction device has a surface formed on which the first through hole opens. In the first state, when the telescopic device is positioned between the rope shackle and the fixing device, the first through hole faces the second opening. The holding device according to claim 1, wherein at least a portion of the surface is a curved surface for surface contact with the portion of the rope shackle that forms the second opening.

3. A holding device used to determine the length of the rope that suspends the elevator car, A fixing device that can be fixed to the aforementioned rope, A telescopic device having a first through-hole for passing the rope through, and which is extendable and retractable along the first through-hole, Auxiliary rope and A connector for connecting the auxiliary rope to the main rope, Equipped with, In a first state in which the rope is passed through a rope shackle from a first opening and the auxiliary rope is connected to the end of the rope protruding from a second opening of the rope shackle via the connector, the holding device moves the fixing device away from the second opening by extending the retractable device, which is positioned between the fixing device fixed to the auxiliary rope and the rope shackle, with the end of the rope or at least one of the auxiliary rope passing through the first through hole.

4. The holding device according to claim 1 or claim 3, further comprising a spacer having a second through-hole for passing the rope through, and positioned between the rope shackle and the telescopic device in the first state.

5. The spacer has a surface formed on which the second through hole opens. When the spacer is positioned between the rope shackle and the telescopic device in the first state, the second through hole faces the second opening. The holding device according to claim 4, wherein at least a portion of the surface is a curved surface for surface contact with the portion of the rope shackle that forms the second opening.

6. The holding device according to claim 5, wherein the spacer is provided with a rotation stopper to prevent the spacer from rotating relative to the rope shackle when the surface is in surface contact with the portion.

7. The aforementioned expandable device is A cylindrical first member having either an external or internal thread formed on its outer surface, A cylindrical second member having the other of a male or female thread that engages with the other formed on its inner circumferential surface, A holding device according to claim 1 or claim 3, comprising:

8. A method for determining the length of the rope using the holding device described in claim 1 or claim 2, The first step is to pass the rope through the first opening to the rope shackle and position the end of the rope so that it protrudes from the second opening, A second step is to position the telescopic device after the first step such that the end of the rope passes through the first through hole, A third step is to fix the fixing device to the end so that the extension device is positioned between the rope shackle and the extension device, Following the third step, the fourth step involves extending the telescopic device and moving the fixing device away from the second opening, After the fourth step, a fifth step is to mark a reference position on the rope, A method for determining rope length, equipped with [a specific feature / tool].

9. A method for determining the length of the rope using the holding device described in claim 3, The first step is to pass the rope through the first opening to the rope shackle and position the end of the rope so that it protrudes from the second opening, A second step is to connect the auxiliary rope to the end of the rope via the connector, A third step is to position the telescopic device after the second step, such that at least one of the ends of the rope or the auxiliary rope passes through the first through hole. A fourth step is to fix the fixing device to the auxiliary rope so that the telescopic device is positioned between the rope shackle and the rope shackle, A fifth step is to extend the telescopic device and move the fixing device away from the second opening, After the fifth step, a sixth step is to mark a reference position on the rope, A method for determining rope length, equipped with [a specific feature / tool].

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