Rope replacement assembly

Abstract

A rope replacement assembly for replacing a rope of an elevator system, the elevator system comprising: a car; a counterweight; a car guide rail along which the car is configured to move; the balance weight is configured to move along the balance weight guide rail; a rope connected to the car and the counterweight, respectively; the rope replacing assembly comprises a rope winding tool, the rope winding tool comprises a motor and a rope winding reel, and the motor is configured to drive the rope winding reel to rotate so that the rope can be wound around the rope winding reel.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rope replacement assembly, more particularly, to a rope replacement assembly convenient to operate. BACKGROUND

[0002] In an elevator system, ropes are connected to a counterweight and a car for pulling the car to move within an elevator shaft. When the ropes reach their expected life time, the ropes need to be replaced. However, in the prior art, the process of replacing the ropes is very complicated and can cause certain safety hazards to the operators.

[0003] Therefore, it is desirable to provide a rope replacement assembly to improve the prior art. SUMMARY

[0004] According to a first aspect of the utility model, a rope replacement assembly is provided for replacing ropes of an elevator system, the elevator system comprising: a car; a counterweight; a car guide rail, the car being configured to move along the car guide rail; a counterweight guide rail, the counterweight being configured to move along the counterweight guide rail; ropes, respectively connected to the car and the counterweight; the rope replacement assembly comprising: a rope collecting tool comprising a motor and a rope collecting reel, the motor being configured to drive the rope collecting reel to rotate so that the ropes are wound on the rope collecting reel.

[0005] According to the scheme, the rope collecting reel driven by the motor can realize automatic replacement of the ropes, greatly reducing the labor cost and avoiding safety hazards during manual operation.

[0006] In some schemes, the rope collecting tool can be fixed to the upper beam of the car guide rail and / or the car suspension.

[0007] In some schemes, the rope collecting tool can further comprise a base and a frame, the frame extending upward in the vertical direction from the base, and the rope collecting reel is fixed to the frame.

[0008] In some schemes, the base can be configured to be placed on the top of the car.

[0009] According to the scheme, the rope collecting tool is placed on the top of the car, which is convenient for rope replacement operation.

[0010] In some schemes, the rope collecting tool can comprise wheels fixed to the base.

[0011] According to the scheme, the rope collecting tool can be conveniently transported by the wheels of its base.

[0012] In some schemes, the base has a rectangular shape, and one of the edges of the base can be parallel to one of the edges of the top of the car.

[0013] In some embodiments, the base has a rectangular shape, and an included angle between one of the edges of the base and one of the edges of the top of the car can be 45°.

[0014] In some embodiments, the elevator system can include a traction sheave around which the rope is driven by the traction sheave during normal operation of the elevator, and the rope replacement assembly can further include a guide sheave spaced apart from the traction sheave, the rope extends around the guide sheave to the rope take-up tool during replacement of the rope, and the rope does not extend around the traction sheave.

[0015] According to this embodiment, the rope extends around the guide sheave instead of the traction sheave during replacement of the rope, which reduces the friction between the rope and the sheave, making it easier to replace the rope. After the replacement of the rope is completed, the rope extends around the traction sheave instead of the guide sheave, causing the rope to move under the action of the friction between the rope and the sheave to drive the car.

[0016] In some embodiments, the rope replacement system can further include a new rope spool on which the new rope to be replaced is wound, the new rope to be replaced is connected to the old rope, and the new rope and the old rope move together under the action of the rope take-up tool.

[0017] According to this embodiment, the new rope is connected to the old rope before the replacement of the rope operation begins, the new rope gradually replaces the position of the old rope as the replacement of the rope operation progresses, and the new rope is cut off from the old rope after the replacement of the rope operation is completed.

[0018] In some embodiments, the elevator system can further include a machine room, and the two ends of the rope are fixed to the machine room before or after the replacement of the rope.

[0019] In some embodiments, the elevator system can be a machine room-less elevator system, and the two ends of the rope are fixed to the rope head plate on the car side and the counterweight side, respectively.

[0020] In some embodiments, the rope take-up tool can further include a speed reducer, the motor is coupled to the rope take-up spool via the speed reducer, and the motor is a brake motor.

[0021] According to this embodiment, because the motor is a brake motor, the motor can be quickly stopped in the event of an accident, ensuring the safety of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A schematic view of an elevator system according to an embodiment of the present application is shown;

[0023] Figure 2 A schematic view of a rope replacement assembly according to a first embodiment of the present application is shown;

[0024] Figure 3A schematic view of a rope replacement assembly according to a second embodiment of the present application is shown.

[0025] Reference signs

[0026] 10 elevator system

[0027] 12 car

[0028] 13 car roof

[0029] 14 car guide rail

[0030] 16 counterweight

[0031] 18 machine room

[0032] 20 rope

[0033] 100 rope collecting tool

[0034] 110 base

[0035] 112 wheel

[0036] 120 frame

[0037] 130 rope collecting reel

[0038] 140 bracket

[0039] A counterweight side rope head

[0040] B car side rope head DETAILED DESCRIPTION

[0041] In order to make the purpose, scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the present application embodiment will be described clearly and completely in the following with reference to the drawings of the specific embodiments of the present application. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference signs in the drawings represent the same components.

[0042] Figure 1A schematic diagram of an elevator system 10 according to an embodiment of the present application is shown, the elevator system 10 mainly comprises a car 12, a counterweight 16, a machine room 18 and a rope 20. The car 12 travels in the elevator shaft along the car guide rails 14 to transport passengers or goods. The counterweight 16 is used to maintain the balance of the car when the car stops at the landing. The machine room 18 can be arranged at the top of the elevator shaft, and a control unit of the elevator system 10 is arranged in the machine room 18 to control the operation of the elevator system 10. The rope 20 is connected to the car 12 and the counterweight 16 respectively to pull the car 12 and the counterweight 16 to travel, and the counterweight side rope head A and the car side rope head B of the rope 20 are fixed in the machine room 18 respectively. It should be understood that the present application is not intended to limit the specific arrangement of the rope, but to include any suitable arrangement of the rope ratio of 2:1, 4:1, etc. In addition, it should be understood that although Figure 1 The elevator system 10 with a machine room is shown, but the present application is also applicable to a machine roomless elevator system. Although Figure 1 The elevator system 10 with a machine room is shown, but the present application is not limited thereto, and the rope replacement assembly of the present application can also be used in a machine roomless elevator system. For a machine roomless elevator system, the two ends of the rope are fixed to the rope head plates on the car side and the counterweight side respectively.

[0043] Figure 2 A schematic diagram of a rope replacement assembly according to a first embodiment of the present application is shown, the rope replacement assembly comprises a rope winding tool 100. The rope winding tool 100 mainly comprises a motor (not shown) and a rope winding reel 130, the motor is configured to drive the rope winding reel 130 to rotate, and the rope is wound on the rope winding reel 130 during the replacement of the rope. The rope winding tool 100 further comprises a base 110 and a frame 120, the frame 120 extends upward in the vertical direction from the base 110, and the rope winding reel 130 is fixed to the frame 120. A wheel 112 is arranged on the base 110, so that the rope winding tool 100 is convenient to be transported.

[0044] The specific steps of the rope replacement operation using the rope replacement assembly according to the present application are described below.

[0045] Step 1: Move the car 12 to the top of the elevator shaft, and move the counterweight 16 to the bottom of the elevator shaft. Preferably, a support (not shown) can be arranged at the bottom of the counterweight 16 to prevent the counterweight 16 from moving accidentally, causing the car 12 to move accidentally and causing safety hazards to the operator.

[0046] Step 2: Fix the rope winding tool 100 to the car guide rail 14, for example, the rope winding tool 100 can comprise a bracket 140, the bracket 140 has a Y-shaped structure, and the rope winding tool 100 is clamped and fixed to the car guide rail 14 through the bracket 140. It should be understood that although Figure 2 and Figure 3Two brackets 140 are shown in the figures, but the present application is not intended to limit the number of brackets, and the present application is also not intended to limit the specific fixing manner between the rope collecting tool 100 and the car guide rail 14. Preferably, the rope collecting tool 100 can be placed on the top 13 of the car 12, and the top 13 can be an upper beam of a suspension frame for supporting the car 12. For example, the base 110 of the rope collecting tool 100 can be placed on the top 13 of the car 12, so that the rope collecting tool 100 is supported by the top 13 of the car 12. The support of the top 13 of the car 12 to the rope collecting tool 100 improves the stability of the rope collecting tool 100, and also reduces the force borne by the brackets 140 of the tool 100, preventing the brackets 140 from being damaged due to overload. It should be understood that, depending on different application requirements, the rope collecting tool 100 can be fixed to one of the car guide rail 14 or the top 13 of the car 12, or can be fixed to both the car guide rail 14 and the top 13 of the car 12. For example, especially for some machine room-less elevator systems, the rope collecting tool 100 can be fixed to the upper beam of the suspension frame of the car 12, which is close to the motor and the counterweight, so that fixing the rope collecting tool 100 to the upper beam makes the rope replacement process more convenient. Alternatively, for some machine room elevator systems 10, there can be no upper beam of the suspension frame of the car 12, in which case the rope collecting tool 100 can be fixed to the car guide rail 14.

[0047] Step 3: The counterweight side rope head A is unfastened from the machine room 18, and then the counterweight side rope head A is connected to the rope collecting reel 130 of the rope collecting tool 100. The car side rope head B is unfastened from the machine room 18, and then the car side rope head B is connected to the new rope (not shown). For example, the new rope and the old rope can be connected together by weaving. Alternatively, the counterweight side rope head A can be connected to the new rope, and the car side rope head B can be connected to the reel of the rope collecting tool 100.

[0048] Step 4: The motor of the rope collecting tool 100 is started to drive the rope collecting reel 130 to rotate, and the rotation of the rope collecting reel 130 causes the old rope to be gradually pulled out of the elevator shaft, while the new rope connected to the old rope gradually enters the elevator shaft and occupies the position previously occupied by the old rope. When the old rope is completely pulled out of the elevator shaft, the new rope completely replaces the old rope.

[0049] Step 5: One side of the new rope is cut off (for example, the woven part is unfastened) from the old rope, and the excess part of the other side of the new rope is cut off, and finally the two ends of the new rope are fixed in the corresponding positions in the machine room 18, respectively.

[0050] Preferably, the elevator system 10 may include a traction pulley (not shown), which drives the rope 20 during normal elevator operation. The rope replacement assembly also includes a guide pulley (not shown) spaced apart from the traction pulley. During rope replacement, the rope 20 extends past the guide pulley to the rope reel 100, and the rope 20 does not pass over the traction pulley. By passing the guide pulley instead of the traction pulley during rope replacement, the friction between the rope 20 and the pulley is reduced, making rope replacement easier. After rope replacement is complete, the rope 20 passes over the traction pulley instead of the guide pulley, allowing the rope 20 to move under the friction between itself and the pulley, thereby driving the car 12.

[0051] Optionally, the rope replacement system may also include a new rope reel (not shown), on which the new rope to be replaced is wound, connected to the old rope, and the new rope and the old rope move together under the action of the rope winding tool 100.

[0052] Preferably, the rope winding tool 100 may further include a speed reducer (not shown), through which a motor is connected to the rope winding reel 130. The motor is a brake motor. The output speed of the motor is reduced by the speed reducer, allowing the rope winding reel 130 to have a suitable rotational speed, thereby ensuring a suitable moving speed for the rope 20 during rope changes. Furthermore, because the motor is a brake motor, it can be quickly stopped in the event of an accident, ensuring the safety of the operator.

[0053] Preferably, such as Figure 2 As shown, the base 110 of the rope reeling tool 100 can have a rectangular shape, and one of the edges of the base 110 can be parallel to one of the edges of the top 13 of the car 12. This arrangement is suitable for situations where the counterweight 16 is located on the rear side of the car 12 (the rear side refers to the side opposite to the car door).

[0054] Alternatively, such as Figure 3 As shown, one of the edges of the base 110 can form a 45° angle with one of the edges of the top 13 of the car 12. This arrangement is suitable when the counterweight 16 is located on the side of the car 12 (the side refers to the side perpendicular to the car door). It should be understood that the above-mentioned 45° angle is only exemplary, and other suitable angles, such as 40° or 50°, can be selected according to specific circumstances.

[0055] The utility model discloses a plurality of exemplary embodiments of the utility model are described in detail with reference to preferred embodiments, however, the person skilled in the art can understand that the above specific embodiments can be variously changed and modified without departing from the utility model concept, and various technical features and structures proposed by the utility model can also be combined, and the protection scope of the utility model is not exceeded, and the protection scope of the utility model is determined by the appended claims.

Claims

1. A rope replacement assembly for replacing a rope of an elevator system, the elevator system comprising: a car; a counterweight; a car guide rail along which the car is configured to move; a counterweight guide rail along which the counterweight is configured to move; ropes connected to the car and the counterweight, respectively; characterized in that the rope replacement assembly comprises: a rope collecting tool comprising a motor and a rope collecting reel, the motor being configured to drive the rope collecting reel to rotate such that the rope is wound on the rope collecting reel.

2. The rope replacement assembly of claim 1, wherein, the rope collecting tool is fixed to an upper beam of the car guide rail and / or a car suspension.

3. The rope replacement assembly of claim 2, wherein, the rope collecting tool further comprises a base and a frame, the frame extending upwardly in a vertical direction from the base, the rope collecting reel being fixed to the frame.

4. The rope replacement assembly of claim 3, wherein, the base is configured to be placed on top of the car.

5. The rope replacement assembly of claim 4, wherein, the rope collecting tool comprises wheels fixed to the base.

6. The rope replacement assembly of claim 4, wherein, the base has a rectangular shape, one of the edges of the base being parallel to one of the edges of the top of the car.

7. The rope replacement assembly of claim 4, wherein, the base has a rectangular shape, an included angle between one of the edges of the base and one of the edges of the top of the car being 45°.

8. The rope replacement assembly of claim 1, wherein, the elevator system comprises a traction sheave around which the rope is driven by the traction sheave during normal operation of the elevator, the rope replacement assembly further comprising a guide sheave spaced apart from the traction sheave, the rope extending around the guide sheave to the rope collecting tool during replacement of the rope, and the rope not extending around the traction sheave.

9. The rope replacement assembly of claim 1, wherein, a new rope reel is further included, the new rope to be replaced being wound on the new rope reel, the new rope to be replaced being connected to the old rope, the new rope and the old rope being jointly moved under the action of the rope collecting tool.

10. The rope replacement assembly of claim 1, wherein, the elevator system further comprises a machine room, both ends of the rope being fixed to the machine room before or after replacement of the rope.

11. The rope replacement assembly of claim 1, wherein, the elevator system is a machine room-less elevator system, both ends of the rope being fixed to a rope head plate on a car side and a counterweight side, respectively.

12. The rope replacement assembly of claim 1, wherein, the rope collecting tool further comprises a speed reducer, the motor being coupled to the rope collecting reel via the speed reducer, the motor being a brake motor.

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