Elevator rope head fixing assembly

Abstract

The invention discloses an elevator rope head fixing assembly which is used for reducing the complexity and cost of elevator maintenance and improving the construction efficiency and safety. The fixing assembly comprises a pull rod, a rope sleeve, a spring positioning piece, a spring, a spring base plate, a compression nut and a composite nut. The pull rod is provided with a first section with external threads; the upper part of the rope sleeve is rotationally connected with the lower end of the pull rod; the spring positioning piece abuts against the supporting component through the connecting part, the second sleeve body part is in threaded connection with the external thread section of the composite nut, the supporting component supports the pull rod through the spring positioning piece and the composite nut, and the elevator car is prevented from falling. The spring and the spring base plate are used for absorbing and transmitting acting force; the compression nut adjusts the pressure of the spring. The position of the composite nut is adjusted through rotation, the elevator car can be fixed without additional supporting equipment when the spring is replaced, and the construction difficulty and risk are reduced. The assembly has the advantages of being compact in structure, convenient to operate and low in maintenance cost and is suitable for the field of elevator operation maintenance.

Description

Technical Field

[0001] This application relates to the technical field of elevator accessories, and specifically to an elevator rope head fixing component. Background Art

[0002] As an indispensable vertical transportation vehicle in modern buildings, the safe operation and stability of elevators are crucial. In an elevator system, the traction rope head fixing component is used to achieve a reliable connection between the traction rope and the elevator system, ensuring the normal operation of the elevator. Among them, the spring, as an important component in the fixing component, plays a role in buffering and shock absorption, and has a direct impact on the smooth operation of the elevator.

[0003] In the prior art, the rope head fixing component usually adopts a threaded connection method, installs the spring on a pull rod or a support member, and adjusts the pre-tightening force through a compression nut. However, during long-term operation, the spring will gradually lose its elasticity due to stress fatigue or material aging, affecting the performance of the fixing component, and thus may cause the risk of traction rope loosening or deviation. Therefore, it is necessary to replace the aging spring in a timely manner.

[0004] Currently, the replacement operation of the spring usually requires supporting or fixing the elevator car to avoid the instability of the traction rope or the falling of the elevator car due to the removal of the spring. This operation process is relatively cumbersome and involves multiple steps:

[0005] (1), Use an external support device to hold the elevator car in a safe position;

[0006] (2), Remove the nut or other connecting parts in the fixing component;

[0007] (3), Remove the aging spring and install a new spring;

[0008] (4), Restore the component structure and adjust the pre-tightening force.

[0009] The above operations need to be carried out by professionals and take a long maintenance time, increasing the complexity and cost of elevator maintenance. In addition, the operation of supporting the elevator car requires additional equipment support, increasing the construction difficulty and risk.

[0010] Therefore, how to simplify the operation process of spring replacement, reduce the impact on the elevator operation state, and at the same time improve the safety and efficiency during the replacement process has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0011] This application provides an elevator rope head fixing component, which does not require using an external support device to hold the elevator car, thereby reducing the construction difficulty and risk, and also reducing the complexity and cost of elevator maintenance.

[0012] The elevator rope head fixing component provided by this application includes:

[0013] A tie rod having a first section located at the upper part of the tie rod and having an external thread;

[0014] A rope socket, the lower part of which is used to connect with the hoisting rope, and the upper part of the rope socket is rotatably connected to the lower end of the tie rod;

[0015] A spring positioning member, including a first sleeve part, a connecting part and a second sleeve part arranged in sequence from top to bottom. The diameter of the second sleeve part is smaller than that of the first sleeve part. The first sleeve part and the second sleeve part are connected by the connecting part. The first section of the tie rod passes through the first sleeve part and the second sleeve part. The connecting part is used to abut against the upper surface of the supporting member. The second sleeve part is used to extend into the through hole of the supporting member from top to bottom. The inner wall of the second sleeve part has an internal thread, and there is a gap between the outer wall of the first section of the tie rod and the inner wall of the second sleeve part;

[0016] A spring sleeved on the tie rod, and the lower end of the spring abuts against the connecting part and is located within the first sleeve part;

[0017] A spring backing plate sleeved on the tie rod, and the lower surface of the spring backing plate abuts against the upper end of the spring;

[0018] A compression nut screwed on the first section of the tie rod, and the compression nut abuts against the upper surface of the spring backing plate;

[0019] A composite nut having an internal thread and an external thread section. An annular boss is provided on the outer wall of the composite nut, and the annular boss is located below the external thread section. The composite nut can be sleeved and screwed on the first section of the tie rod. The external thread section of the composite nut can extend into the through hole of the supporting member from bottom to top and be threadedly connected to the second sleeve part. The annular boss is used to abut against the lower surface of the supporting member.

[0020] Preferably, there are two compression nuts, and the two compression nuts are sequentially screwed on the first section of the tie rod. The lower compression nut abuts against the upper surface of the spring backing plate.

[0021] Preferably, two downward extending extension arms are provided at the lower end of the composite nut, and the two extension arms are symmetrically arranged with respect to the axis of the tie rod;

[0022] The lower part of the pull rod has a second section and two connecting seats. The second section has an external thread. The two connecting seats are located below the second section. The two connecting seats are symmetrically arranged with respect to the axis of the pull rod. The upper ends of the two limiting plates are respectively rotatably connected to the two connecting seats. The lower parts of the two limiting plates are respectively located on both sides of the rope sleeve. The rotation axes of the two limiting plates are parallel to the rotation axis of the rope sleeve. The two extension arms are respectively located above the two limiting plates. Torsion springs for applying an upward flipping force to the limiting plates are provided at the connections between the limiting plates and the connecting seats, so that the two limiting plates have a tendency to always move away from the rope sleeve;

[0023] The composite nut can be screwed onto the second section and axially displaced on the second section to switch between the first working position and the second working position. When the composite nut is in the first working position, the two extension arms respectively press and fix the two limiting plates on the two side walls of the rope sleeve; when the composite nut is in the second working position, the two extension arms respectively abut against the upper surfaces of the two limiting plates, and there is a gap between the two limiting plates and the two side walls of the rope sleeve respectively.

[0024] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0025] For the elevator rope head fixing component of this application, when the spring needs to be replaced, the composite nut is moved up to the first section of the pull rod, and then the composite nut is screwed on the first section of the pull rod, so that the external thread section of the composite nut extends into the through hole of the support component from bottom to top, and the external thread section of the composite nut is threadedly connected to the second sleeve part of the spring positioning part. In this way, the pull rod, the composite nut and the spring positioning part can be connected to each other. The connecting part of the spring positioning part abuts against the upper surface of the support component, so that the support component holds the pull rod through the spring positioning part and the composite nut. In this way, the traction rope connected to the pull rod through the rope sleeve is fixed, and at this time, the elevator car connected to the traction rope will not fall. At this time, the spring can be replaced. In this way, when replacing the spring, the elevator car can be fixed through the connection of the composite nut in the elevator rope head fixing component of this application, without using an external support device to hold the elevator car, thereby reducing the construction difficulty and risk, and also reducing the complexity and cost of elevator maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic structural view of the present invention when the composite nut is in the first working position;

[0027] Figure 2 FIG. is a schematic structural view of the present invention when the composite nut is in the second working position;

[0028] Figure 3 FIG. is a schematic structural view of the present invention when the composite nut is screwed on the first section of the pull rod.

[0029] Description of the reference numerals: 10, tie rod; 11, first section; 12, second section; 13, connecting seat; 14, limiting plate; 15, joint head; 20, rope socket; 21, traction rope; 30, spring positioning member; 31, first sleeve body part; 32, second sleeve body part; 33, connecting part; 40, spring; 50, spring backing plate; 60, compression nut; 70, composite nut; 71, external thread section; 72, annular boss; 73, extension arm; 731, connecting arm; 100, support member; 110, through hole. Detailed implementation manners

[0030] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the drawings.

[0031] As Figures 1 to 3 shown, the elevator rope end fixing assembly of this embodiment includes a tie rod 10, a rope socket 20, a spring positioning member 30, a spring 40, a spring backing plate 50, a compression nut 60 and a composite nut 70.

[0032] The tie rod 10 has a first section 11 and a second section 12. The first section 11 is located at the upper part of the tie rod 10 and has an external thread. The second section 12 is located at the lower part of the tie rod 10 and has an external thread. Two connecting seats 13 are further provided at the lower part of the tie rod 10. The two connecting seats 13 are located below the second section 12. The two connecting seats 13 are symmetrically arranged with respect to the axis of the tie rod 10. The lower end of the tie rod 10 has a joint head 15. The joint head 15 is connected to the upper part of the rope socket 20 through a pin shaft, so that the tie rod 10 and the rope socket 20 can rotate relative to each other.

[0033] The lower part of the rope socket 20 is used to connect with the traction rope 21. The traction rope 21 bypasses the wedge block inside the rope socket 20 and folds together and then is locked and fixed through a locking member. The lower end of the traction rope 21 is connected to the elevator car.

[0034] The spring positioning member 30 includes a first sleeve body part 31, a connecting part 33 and a second sleeve body part 32 arranged in sequence from top to bottom. Both the first sleeve body part 31 and the second sleeve body part 32 are cylindrical structures with openings at both ends. The diameter of the second sleeve body part 32 is smaller than that of the first sleeve body part 31. The first sleeve body part 31 and the second sleeve body part 32 are coaxially arranged. The first sleeve body part 31 and the second sleeve body part 32 are connected through the connecting part 33. The connecting part 33 is an annular member. The outer peripheral edge of the connecting part 33 is connected to the lower edge of the first sleeve body part 31. The inner peripheral edge of the connecting part 33 is connected to the upper edge of the second sleeve body part 32. The connecting part 33 is perpendicular to the axis of the tie rod 10.

[0035] The first section 11 of the pull rod 10 passes through the first sleeve body part 31 and the second sleeve body part 32. The connecting part 33 is used to abut against the upper surface of the support member 100, and the support member 100 can be a mounting plate. A through hole 110 is provided on the support member 100, and the through hole 110 penetrates the upper and lower surfaces of the support member 100.

[0036] The second sleeve body part 32 is used to extend downward into the through hole 110 of the support member 100. The inner wall of the second sleeve body part 32 has internal threads. There is a gap between the outer wall of the first section 11 of the pull rod 10 and the inner wall of the second sleeve body part 32, and this gap can accommodate the composite nut 70.

[0037] The spring 40 is sleeved on the pull rod 10. The lower end of the spring 40 abuts against the connecting part 33 and is located within the first sleeve body part 31, so that the spring positioning member 30 supports and positions the lower end of the spring 40.

[0038] The spring backing plate 50 is sleeved on the pull rod 10. The lower surface of the spring backing plate 50 abuts against the upper end of the spring 40, so that the spring backing plate 50 supports and positions the upper end of the spring 40.

[0039] The compression nut 60 is screwed onto the first section 11 of the pull rod 10. The compression nut 60 abuts against the upper surface of the spring backing plate 50. Specifically, there are two compression nuts 60, and the two compression nuts 60 are sequentially screwed onto the first section 11 of the pull rod 10. The lower compression nut 60 abuts against the upper surface of the spring backing plate 50, so that the compression nut 60 presses down and fixes the spring backing plate 50, so that the compression nut 60 applies a certain pre-tightening force to the spring 40 through the spring backing plate 50.

[0040] The composite nut 70 has an internal thread and an external thread section 71. The external thread section 71 is located at the upper part of the composite nut 70. An annular boss 72 is provided on the outer wall of the composite nut 70. The annular boss 72 is located below the external thread section 71. The composite nut 70 can be sleeved and screwed onto the first section 11 of the pull rod 10. The external thread section 71 of the composite nut 70 can extend upward from the bottom into the through hole 110 of the support member 100 and be threadedly connected to the second sleeve part 32. The annular boss 72 is used to abut against the lower surface of the support member 100. In this way, when the spring 40 needs to be replaced, the composite nut 70 is moved up to the first section 11 of the pull rod 10, and then the composite nut 70 is screwed upward on the first section 11 of the pull rod 10, so that the external thread section 71 of the composite nut 70 extends upward from the bottom into the through hole 110 of the support member 100, and the external thread section 71 of the composite nut 70 extends into the gap between the outer wall of the first section 11 of the pull rod 10 and the inner wall of the second sleeve part 32, so that the external thread section 71 is threadedly connected to the second sleeve part 32 until the annular boss 72 abuts against the lower surface of the support member 100. In this way, the pull rod 10, the composite nut 70 and the spring positioning member 30 can be connected to each other. The connecting part 33 of the spring positioning member 30 abuts against the upper surface of the support member 100, so that the support member 100 holds the pull rod 10 through the spring positioning member 30 and the composite nut 70, and thus holds the elevator car. At this time, the compression nut 60 can be unscrewed, the spring backing plate 50 can be removed, and then the spring 40 can be replaced, and then the spring backing plate 50 and the compression nut 60 can be reinstalled.

[0041] Two downwardly extending extension arms 73 are provided at the lower end of the composite nut 70. The two extension arms 73 are symmetrically arranged with respect to the axis of the pull rod 10. The two extension arms 73 are respectively connected to the composite nut through two connecting arms 731. The two extension arms 73 both extend along the axis direction of the pull rod 10. There is a certain distance between the two extension arms 73 and the outer wall of the pull rod 10.

[0042] The upper ends of the two limiting plates 14 are respectively rotatably connected to the two connecting seats 13. The lower parts of the two limiting plates 14 are respectively located on both sides of the rope sleeve 20. The rotation axes of the two limiting plates 14 are parallel to the rotation axis of the rope sleeve 20. The two extension arms 73 are respectively located above the two limiting plates 14. Torsion springs for applying an upward turning force to the limiting plates 14 are provided at the connections between the limiting plates 14 and the connecting seats 13, so that the two limiting plates 14 have a tendency to always move away from the rope sleeve 20.

[0043] The composite nut 70 can be screwed onto the second section 12 and axially displaced on the second section 12 to switch between the first working position and the second working position. Refer to Figure 1, when the composite nut 70 is in the first working position, the two extension arms 73 respectively press and fix the two limiting plates 14 on the two side walls of the rope socket 20. At this time, the rope socket 20 is clamped and fixed by the two limiting plates 14, so that the rope socket 20 cannot rotate relative to the pull rod 10. At this time, the rope socket 20 is fixed, which is convenient for the operation of connecting the traction rope 21 to the rope socket 20.

[0044] Refer to Figure 2 , when the composite nut 70 is rotated so that the composite nut 70 moves upward a certain distance on the second section 12, the composite nut 70 is in the second working position. At this time, the two limiting plates 14 are turned upward under the action of the torsion spring, and the two extension arms 73 respectively abut against the upper surfaces of the two limiting plates 14, so that the two extension arms 73 respectively abut and position the two limiting plates 14. At this time, there is a certain distance between the two limiting plates 14 and the two side walls of the rope socket 20 respectively. At this time, the rope socket 20 can rotate relative to the pull rod 10, but the rotation angle of the rope socket 20 is limited by the two limiting plates 14. This can avoid the problem that the rotation angle of the connection part between the rope socket 20 and the pull rod 10 is too large during the use of the elevator rope head fixing component, resulting in uneven tension distribution of the traction rope 21, thereby increasing the wear of the traction rope 21 and shortening the service life. It can also avoid the problem that the rotation angle of the rope socket 20 is too large, increasing the mechanical load at the connection between the rope socket 20 and the pull rod 10, resulting in loosening or wear of the connecting parts. Thus, the reliability and safety of the elevator rope head fixing component of the present application are improved.

[0045] This specification and the drawings are merely exemplary descriptions of the present application and are considered to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application and its equivalent technologies, the present application intends to include these modifications and variations.

Claims

1. An elevator rope end fixing assembly, characterized in that: include: The pull rod (10) has a first section (11), the first section (11) is located at the upper portion of the pull rod (10) and has an external thread; A rope loop (20), the lower portion of which is used to connect with the traction rope (21), and the upper portion of the rope loop (20) is rotatably connected to the lower end of the pull rod (10); The spring positioning member (30) comprises a first sleeve portion (31), a connecting portion (32) and a second sleeve portion (32) which are arranged in sequence from top to bottom. The diameter of the second sleeve portion (32) is smaller than that of the first sleeve portion (31). The first sleeve portion (31) and the second sleeve portion (32) are connected via a connecting portion (33). The first section (11) of the pull rod (10) passes through the first sleeve portion (31) and the second sleeve portion (32). The connecting portion (33) is used to abut against the upper surface of the support component (100). The second sleeve portion (32) is used to extend from top to bottom into the through hole (110) of the support component (100). The inner wall of the second sleeve portion (32) has an internal thread. There is a gap between the outer wall of the first section (11) of the pull rod (10) and the inner wall of the second sleeve portion (32). A spring (40) is sleeved on the pull rod (10), wherein the lower end of the spring (40) abuts against the connecting portion (33) and is located in the first sleeve portion (31); A spring pad (50) is sleeved on the pull rod (10), and the lower surface of the spring pad (50) abuts against the upper end of the spring (40); A compression nut (60) is screwed onto the first section (11) of the pull rod (10), and the compression nut (60) abuts against the upper surface of the spring washer (50); A composite nut (70) has an internal thread and an external thread section (71). An annular boss (72) is provided on the outer wall of the composite nut (70). The annular boss (72) is located below the external thread section (71). The composite nut (70) can be sleeved and screwed onto the first section (11) of the pull rod (10). The external thread section (71) of the composite nut (70) can extend from bottom to top into the through hole (110) of the support component (100) and be threadedly connected to the second sleeve body (32). The annular boss (72) is used to abut against the lower surface of the support component (100).

2. The elevator rope end fixing assembly according to claim 1, characterized in that: There are two compression nuts (60), which are screwed onto the first section (11) of the pull rod (10) in sequence, and the compression nut (60) located at the bottom abuts against the upper surface of the spring pad (50).

3. The elevator rope end fixing assembly according to claim 1, characterized in that: The lower end of the composite nut (70) is provided with two downwardly extending extension arms (73), and the two extension arms (73) are symmetrically arranged with respect to the axis of the pull rod (10); The lower part of the pull rod (10) has a second section (12) and two connecting seats (13), the second section (12) has an external thread, the two connecting seats (13) are located below the second section (12), the two connecting seats (13) are symmetrically arranged about the axis of the pull rod (10), the upper ends of the two limit plates (14) are respectively rotatably connected to the two connecting seats (13), the lower parts of the two limit plates (14) are respectively located on both sides of the rope loop (20), the rotation axes of the two limit plates (14) are parallel to the rotation axis of the rope loop (20), the two extension arms (73) are respectively located above the two limit plates (14), and the connection between the limit plate (14) and the connecting seat (13) is provided with a torsion spring for applying an upward flipping force to the limit plate (14), so that the two limit plates (14) have a tendency to always move in a direction away from the rope loop (20); The composite nut (70) can be screwed onto the second section (12) and switched between the first position and the second position by axial displacement on the second section (12). When the composite nut (70) is in the first position, the two extension arms (73) respectively press and fix the two limit plates (14) on the two side walls of the rope loop (20); when the composite nut (70) is in the second position, the two extension arms (73) respectively abut against the upper surfaces of the two limit plates (14), and there is a distance between the two limit plates (14) and the two side walls of the rope loop (20).

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