Holding device and method for determining length of rope

Abstract

The invention provides a holding device and a method for determining the length of a rope, which can reduce the burden of an operator in the operation of determining the length of the rope of an elevator. The holding device (30) is provided with a fixing device (31) and a mounting device (32). The fixing device (31) is provided with a first connecting piece (33). The mounting device (32) is provided with a mounting member (34) and a second connecting member (35). When the mounting device (32) is moved upward by the lifting device (12) so as to approach the fixing device (31), the mounting member (34) is in contact with the shackle body (24), and the fixing device (31) moves downward so as to approach the shackle body (24).

Description

Technical Field

[0001] This disclosure relates to a retaining device and a method for determining the length of a rope. Background Technology

[0002] Patent Document 1 describes a rope maintenance device. The maintenance device described in Patent Document 1, for example, is used 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 removing the load acting on the rope, it is necessary to determine the length of the new rope when replacing it, and to determine the length of the rope when shortening it.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 7-10424 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the past, when determining rope length, one worker would pull the rope and the rope shackles used to connect it, while other workers would mark the rope with symbols indicating its length. This resulted in a heavy workload for the workers.

[0008] This disclosure was made to solve the aforementioned problems. An object of this disclosure is to provide a retaining device that reduces the burden on operators in operations involving determining the length of elevator ropes. Another object of this disclosure is to provide a method for determining rope length using this retaining device.

[0009] Methods for solving problems

[0010] The disclosed retaining device is for determining the length of the rope of a suspended elevator car. The retaining device includes: a fixing device having a first connecting member for fixing to the rope; and a mounting device for mounting to a rope shackle connected to the rope. The rope shackle includes: a rod; and a shackle body disposed on the rod and connected to the rope. The mounting device includes: a mounting member configured to be passed through the rod; and a second connecting member disposed on the mounting member. With the fixing device fixed to the rope and the mounting device mounted to the rope shackle, when the mounting device is moved upwards or downwards in a manner close to the fixing device by a lifting device connected to the first and second connecting members, the mounting member contacts the shackle body, thereby causing the fixing device to move upwards or downwards in a manner close to the shackle body.

[0011] The method for determining the rope length disclosed herein is a method for determining the rope length using the aforementioned retaining device. The method includes: a fixing step, fixing the fixing device to the rope; an installation step, installing the installation device to the rope shackle in a rod-through mounting manner; a connecting step, connecting the lifting device to a first connecting member and a second connecting member; a moving step, after the connecting step, moving the fixing device upwards or downwards using the lifting device to bring the fixing device closer to the installation device; and a marking step, after the moving step, marking a reference position on the rope.

[0012] Invention Effects

[0013] According to this disclosure, the workload of operators can be reduced in the operation of determining the rope length of an elevator. Attached Figure Description

[0014] Figure 1 This is a diagram showing an example of an elevator system.

[0015] Figure 2 It means Figure 1 A diagram showing the details of Part A.

[0016] Figure 3 This is a diagram showing an example of the holding device according to Embodiment 1.

[0017] Figure 4 This is a diagram showing an example of a first receiving component and a second receiving component.

[0018] Figure 5 This diagram shows the state in which the first receiving component and the second receiving component are fixed by the fixing component.

[0019] Figure 6 This is a flowchart illustrating an example of the steps involved in determining the length of a rope using a retaining device.

[0020] Figure 7 This is a diagram showing other examples of the first receiving component and the second receiving component.

[0021] Label Explanation

[0022] 1: Car; 2: Counterweight; 3: Rope; 4: Hoistway; 5: Traction machine; 6: Control device; 7: Pit; 8: Buffer; 9: Buffer; 10: Beam; 11: Marker; 12: Lifting device; 20: Rope shackle; 21: Rod; 22: Support; 23: Spring; 24: Shackle body; 25: First opening; 26: Second opening; 30: Holding device; 31: Fixing device; 32: Mounting device; 33: First connecting member; 34: Mounting member; 35: Second connecting member; 36: First supporting component; 37: Second supporting component; 38: Fixing component; 39: First cut; 39a: Open end; 40-41: Through hole; 42: Second cut; 42a: Open end; 43-45: Through hole. Detailed Implementation

[0023] The following is a detailed description with reference to the accompanying drawings. Repetitive descriptions have been simplified or omitted where appropriate. In the drawings, the same reference numerals denote the same or equivalent parts.

[0024] Implementation method 1.

[0025] Figure 1 This is a diagram illustrating an example of an elevator system. First, refer to... Figure 1 The elevator system is described below. The elevator system includes a car 1 and a counterweight 2. The car 1 and the counterweight 2 are suspended within the shaft 4 by ropes 3. Ropes 3 are, for example, steel wire ropes. Figure 1 This serves as an example of an elevator device using a 1:1 rope winding method.

[0026] Rope 3 is wound around traction machine 5. Control device 6 controls traction machine 5. By controlling traction machine 5 through control device 6, car 1 moves up and down in hoistway 4. Counterweight 2 moves up and down in hoistway 4 in the opposite direction to the movement of car 1.

[0027] A buffer 8 for the car 1 and a buffer 9 for the counterweight 2 are installed in the pit 7 of the hoistway 4. The buffer 8 is located directly below the car 1. The buffer 9 is located directly below the counterweight 2.

[0028] Figure 2 It means Figure 1 A diagram showing the details of section A. The rope shackle 20 is a device used to connect the end of rope 3. In Figure 1 In the elevator device shown with a 1:1 rope winding method, the rope 3 is connected to the car 1 via the rope shackle 20. Figure 2 This illustrates an example where rope 3 is connected to beam 10 of car 1 via rope shackle 20. In a 2:1 rope winding method elevator system, rope 3 is connected to a fixed part of hoistway 4 via rope shackle 20.

[0029] The rope shackle 20 includes, for example, a rod 21, a receiving part 22, a spring 23, and a shackle body 24.

[0030] Rod 21 is a rod-shaped component. Rod 21 is configured to pass through beam 10. Support member 22 is provided at the lower end of rod 21. Support member 22 is positioned below beam 10. Spring 23 is positioned between beam 10 and support member 22. Support member 22 receives a downward force from spring 23.

[0031] The shackle body 24 is the part that is actually connected to the rope 3. The shackle body 24 is located at the upper end of the rod 21. For example, the shackle body 24 is a hollow component. A first opening 25 and a second opening 26 communicating 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 the opening for connecting the rope 3. Figure 2 This illustrates an example of connecting rope 3 to shackle body 24 by winding rope 3 inside a wedge (not shown) within the shackle body 24. Rope 3 can also be connected to shackle body 24 by other methods.

[0032] Figure 1 Part B and Figure 1 The A part is the same. Figure 1 In the elevator device shown in the 1:1 rope winding method, the other end of the rope 3 is connected to the counterweight 2 via a rope shackle.

[0033] In the elevator system, when rope 3 becomes old, it is replaced with a new rope 3. Additionally, in the elevator system, when rope 3 elongates and cannot ensure sufficient clearance between the counterweight 2 and the buffer 9, rope 3 is shortened. In such rope 3 replacement and shortening operations, the rope 3 needs to be connected to the rope shackle 20 at the determined length. The retaining device 30 used to determine the length of rope 3 will be described below. The retaining device 30 can also be used in both rope 3 replacement and shortening operations. The retaining device 30 can also be used in other operations where the length of rope 3 needs to be determined.

[0034] Figure 3 This diagram illustrates an example of the retaining device 30 in Embodiment 1. In the case of changing the rope 3, Figure 3 Rope 3 shown is a new rope. In the case of cutting rope 3, Figure 3 Rope 3 shown is the rope before it was cut short. (As shown...) Figure 3 As shown, the rope 3 connected to the rope shackle 20 is configured to pass through the shackle body 24 from the first opening 25, and the end of the rope 3 extends from the second opening 26. Hereinafter, as... Figure 3As shown, the state in which the rope 3 passes through the shackle body 24 is also called the first state.

[0035] In the example shown in this embodiment, the length of the rope 3 is determined by marking the rope 3 using a marker 11. This marking is performed with the rope shackle 20 pulled upwards and the end of the rope 3 pulled downwards to prevent the rope 3 from becoming slack. A retaining device 30 is used to maintain this state. The retaining device 30 includes, for example, a fixing device 31 and a mounting device 32.

[0036] The fixing device 31 can be fixed at any position on the rope 3. Furthermore, by performing a specific release operation on the fixing device 31 fixed to the rope 3, the fixing device 31 can be removed from the rope 3. That is, the fixing device 31 can be attached to and detached relative to the rope 3. Figure 3 This illustrates an example of the portion of the fixing device 31 extending upward from the first opening 25 of the shackle body 24, where the fixing device 31 is secured to the rope 3 in its first state. The fixing device 31 has a first connecting member 33. Figure 3 In the example shown, the first connector 33 is a ring-shaped component.

[0037] The mounting device 32 can be mounted on the rope shackle 20. Furthermore, the mounting device 32 can be removed from the rope shackle 20 by performing a specific release operation. In other words, the mounting device 32 can be mounted and detached from the rope shackle 20.

[0038] The mounting device 32 includes, for example, a mounting member 34 and a second connecting member 35. The mounting member 34 is the portion installed on the rope shackle 20. The mounting member 34 can be configured to be penetrated by the rod 21 of the rope shackle 20. The second connecting member 35 is provided on the mounting member 34. Figure 3 In the example shown, the second connecting member 35 is a lifting eye bolt.

[0039] Figure 3 This indicates a preferred embodiment of the mounting component 34 having a first receiving component 36, a second receiving component 37, and a fixing component 38. Figure 4 This is a diagram showing an example of the first receiving component 36 and the second receiving component 37.

[0040] The first receiving component 36 is a plate-shaped component. A first cutout 39 is formed in the first receiving component 36. Figure 4 In the example shown, the first cut 39 has a fixed width from the open end 39a, and the inner side opposite to the open end 39a is formed into a semi-circle. Additionally, through holes 40 and 41 are formed in the first receiving member 36. Figure 4 In the example shown, the first cut 39 is positioned between the through hole 40 and the through hole 41.

[0041] The second receiving component 37 is a plate-shaped component. A second cutout 42 is formed in the second receiving component 37. Figure 4 In the example shown, the second cut 42 has a fixed width from the open end 42a, and is formed into a semi-circle on the inner side opposite to the open end 42a. Additionally, through holes 43 and 44 are formed in the second receiving member 37. Figure 4 In the example shown, the second cut 42 is positioned between the through hole 43 and the through hole 44.

[0042] The fixing component 38 is a component used to fix the first receiving component 36 and the second receiving component 37. Figure 3 This indicates a preferred example where the fixing member 38 is composed of bolts and nuts. The first receiving member 36 and the second receiving member 37 overlap in such a way that the open end 39a of the first cut 39 and the open end 42a of the second cut 42 face opposite directions to each other, and are fixed by the fixing member 38. Figure 5 This diagram shows the state in which the first receiving component 36 and the second receiving component 37 are fixed by the fixing component 38.

[0043] Figure 3 This illustrates an example where a bolt on the fixing member 38 passes through through holes 41 and 44 from the side of the first receiving member 36 and is tightened to a nut on the side of the second receiving member 37. The first receiving member 36 and the second receiving member 37 are fixed using the fixing member 38, as shown... Figure 5 As shown, a through hole 45 is formed in the mounting member 34 using a first cut 39 and a second cut 42. The through hole 45 is a hole for the rod 21 of the rope shackle 20 to pass through.

[0044] also, Figures 3 to 5 This describes a preferred example where the eye bolt, formed by the second connecting member 35, also functions to secure the first receiving member 36 and the second receiving member 37. Specifically, the eye bolt passes through the through holes 40 and 43 from the side of the first receiving member 36 and is tightened to the nut on the side of the second receiving member 37. Thus, the eye bolt is fixed to the mounting member 34. Furthermore, the first receiving member 36 and the second receiving member 37 are fixed together by the eye bolt.

[0045] Next, the method for determining the length of the rope 3 using the retaining device 30 will be described. Figure 6 This is a flowchart illustrating an example of the steps for determining the length of rope 3 using the retaining device 30.

[0046] First, the operator passes the rope 3 through the first opening 25 into the shackle body 24, and pulls the end of the rope 3 out through the second opening 26. That is, the rope 3 is configured in the first state.

[0047] Next, in the fixing step shown in S101, the operator secures the fixing device 31 to the rope 3 in the first state. In the fixing step, the fixing device 31 is fixed to the portion of the rope 3 that extends upward from the first opening 25.

[0048] Next, in the installation step shown in S102, the operator installs the mounting device 32 onto the rope shackle 20 by having the rod 21 of the rope shackle 20 pass through the mounting member 34. Specifically, the operator moves the first receiving member 36 and the second receiving member 37 by clamping the rod 21 from both sides using the first cut 39 and the second cut 42, and makes the first receiving member 36 and the second receiving member 37 overlap by having the rod 21 pass through the through hole 45. Then, in this state, the first receiving member 36 and the second receiving member 37 are fixed using the fixing member 38. In addition, the second connecting member 35 is fixed to the mounting member 34.

[0049] Next, in the connection step shown in S103, as Figure 3 As shown, the operator connects the lifting device 12 between the first connecting member 33 and the second connecting member 35. A general chain pulley or similar device can also be used as the lifting device 12. Alternatively, a specialized lifting device can be used as the lifting device 12. In this case, the lifting device 12 can also be included as a component of the holding device 30.

[0050] Next, in the moving step shown in S104, the operator moves the fixing device 31 downward using the lifting device 12 so that the fixing device 31 is close to the mounting device 32. The moving step is performed after the connecting step.

[0051] At the start of the moving step, with the fixing device 31 secured to the rope 3 and the mounting device 32 installed on the rope shackle 20, the lifting device 12 is connected to the first connecting member 33 and the second connecting member 35. In this state, when the mounting device 32 is moved upwards by the lifting device 12 in a manner close to the fixing device 31, the mounting member 34 contacts the shackle body 24 from below, and the fixing device 31 moves downwards in a manner close to the shackle body 24. That is, by performing the moving step, the rope shackle 20 is pulled upwards, and the rope 3 is pulled downwards.

[0052] Then, after the operator begins to operate the lifting device 12, the operation of the lifting device 12 is stopped before the rope 3 becomes slack. Thus, the rope shackle 20 and the rope 3 are kept in a state where the pole 21 is facing vertically and the rope 3 is not slack.

[0053] Next, in the marking step shown in S105, the operator uses the marker 11 to mark a reference position on the rope 3. The reference position is the position that serves as a reference for the location where the rope 3 is cut. The reference position may not be the location where the rope 3 is cut itself. The marking step is performed after the movement step.

[0054] According to the example shown in this embodiment, the retaining device 30 can maintain the state where the rope shackle 20 is pulled upwards and the end of the rope 3 is pulled downwards. The operator does not need to continuously pull the rope 3 downwards until the mark on the rope 3 is finished. Therefore, the workload of the operator can be reduced in operations used to determine the length of the rope 3. By using the retaining device 30, this operation can also be performed by one person.

[0055] In this embodiment, an example of rope 3 being connected to rope shackle 20 from above has been described. However, in an elevator device with a 2:1 rope winding method, for example, rope 3 is connected to rope shackle 20 from below. In such an elevator device, retaining device 30 can also be used in operations for determining the length of rope 3.

[0056] In this case, during the fixing step shown in S101, the fixing device 31 is fixed to the portion of the rope 3 extending downward from the first opening 25. Furthermore, during the moving step shown in S104, the operator moves the fixing device 31 upward using the lifting device 12, bringing the fixing device 31 closer to the mounting device 32. That is, when the mounting device 32 is moved downward by the lifting device 12 in a manner close to the fixing device 31, the mounting member 34 contacts the shackle body 24 from above, and the fixing device 31 moves upward in a manner close to the shackle body 24. By performing the moving step, the rope shackle 20 is pulled downward, and the rope 3 is pulled upward.

[0057] The following describes other examples of the retaining device 30. If possible, the retaining device 30 may also combine multiple examples as shown below.

[0058] Figure 7 This is a diagram showing other examples of the first receiving component 36 and the second receiving component 37. Figure 7 In the example shown, the first cut 39 is formed such that its width gradually increases as it approaches the open end 39a. The second cut 42 is formed such that its width gradually increases as it approaches the open end 42a. In the elevator assembly, a rope shackle 20 of the same type as the rope 3 is used. When the type of rope shackle 20 is different, the diameter of the rod 21 also changes. Figure 7 The example shown allows the mounting device 32 to be mounted on various types of rope shackles 20.

[0059] Furthermore, to facilitate the fixing of the fixing member 38 to the first receiving member 36 and the second receiving member 37, such as... Figure 7 As shown, an arc-shaped elongated hole can also be formed in the first receiving component 36 as a through hole 41.

Claims

1. A retaining device for determining the length of a rope suspending an elevator car, wherein, The retaining device includes: The fixing device has a first connecting member capable of being fixed to the rope; and The mounting device can be installed on the rope shackle connected to the rope. The rope shackle has the following features: Rod; and The shackle body is mounted on the rod and connected to the rope. The installation device includes: Mounting element, which can be configured to be penetrated by the rod; and A second connecting member is disposed on the mounting member. With the fixing device secured to the rope and the mounting device installed on the rope shackle, when the mounting device is moved upward or downward in a manner close to the fixing device by a lifting device connected to the first and second connecting members, the mounting member contacts the shackle body, thereby causing the fixing device to move upward or downward in a manner close to the shackle body.

2. The holding device according to claim 1, wherein, The mounting component includes: The first receiving component has a first cut; The second receiving component has a second cutout; and A fixing component, used to fix the first receiving component and the second receiving component. When the first receiving component and the second receiving component are fixed by the fixing component, a through hole for the rod to pass through is formed through the first cut and the second cut.

3. The holding device according to claim 2, wherein, The first incision is formed such that its width increases as it approaches the open end. The second cut is formed such that its width increases as it approaches the open end.

4. The holding device according to claim 3, wherein, The fixing component has bolts and nuts. The first receiving component has an elongated hole for the bolt to pass through.

5. A method for determining the length of a rope, used to determine the length of the rope using the retaining device according to any one of claims 1 to 4, wherein, The method for determining the length of the rope includes: The fixing step involves securing the fixing device to the rope; The installation step involves installing the installation device onto the rope shackle by having the rod pass through the installation component. The connection step involves connecting the lifting device to the first connecting member and the second connecting member; The moving step, following the connecting step, involves moving the fixing device upwards or downwards using the lifting device to bring the fixing device closer to the mounting device; and The marking step involves marking the reference position of the rope after the movement step.

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