Elevator car top fixing structure

Abstract

This utility model discloses an elevator car top fixing structure, including a support frame and a fixing frame. A traction component is installed on the support frame, and a car is fixed on the fixing frame. A fixing plate is fixed inside the fixing frame. The traction component includes a traction rope, which is provided in multiple sets and has a fixing mechanism at its bottom. The fixing mechanism includes a plug rod and a fixing sleeve. The plug rod is fixed in the middle section of the traction rope, and the fixing sleeve is fixed to the bottom surface of the fixing plate and inserted into the plug rod. A stop rod is fixed inside the plug rod, and a clamping block is provided inside the fixing sleeve. Multiple clamping blocks are provided, and each has a rubber pad connected to its inner side. A sliding groove is opened on the outer wall of the fixing sleeve. The traction component is installed on the support frame. When the fixing bolts loosen and come off, the traction rope pulls the plug rod and the stop rod. The multiple sets of stop grooves on the outer wall of the stop rod abut against the multiple sets of rubber pads, causing the multiple sets of clamping blocks to slide along the inclined grooves through the inclined blocks, clamping the stop rod tighter and tighter to form a self-locking mechanism to prevent imbalance.

Description

Technical Field

[0001] This utility model relates to the field of elevator installation and maintenance technology, and more specifically, it relates to an elevator car top fixing structure. Background Technology

[0002] In the field of elevator installation and maintenance, the elevator car is connected to the traction components on the support frame via a traction rope. The traction rope bears the entire load of the car and continuously withstands tensile stress and dynamic load during elevator operation. The reliability of the connection between the traction rope and the car fixed frame is directly related to the safety of elevator operation and the safety of passengers' lives. Therefore, a high-strength fixed connection method is required to ensure that the traction rope will not loosen or slip under any working conditions.

[0003] However, existing elevator car top fixing structures have significant shortcomings in the fixing and connection of traction ropes. Traditional methods typically use a single bolt fastening method to directly fix the traction rope to the fixing frame. Although this fixing method is simple in structure, it lacks sufficient safety redundancy. When the bolts loosen or even fall off due to vibration fatigue, corrosion, or operational errors, the traction rope will immediately lose its fixed constraint, causing the car to become unbalanced or even fall, resulting in serious safety accidents. Moreover, relying solely on bolt fastening cannot achieve a self-locking function. During long-term elevator operation, the bolts are subject to repeated impacts and vibrations, which can gradually loosen and reduce the reliability of the connection. The lack of multiple safety protection mechanisms in the fixing method cannot meet the strict safety requirements of elevators as special equipment and poses significant safety hazards. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides an elevator car top fixing structure to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an elevator car top fixing structure, including a support frame and a fixing frame. A traction component is installed on the support frame, and a car is fixedly mounted on the fixing frame. A fixing plate is fixedly mounted inside the fixing frame. The traction component includes a traction rope, which is provided in multiple sets and has a fixing mechanism at its bottom end. The fixing mechanism includes a plug rod and a fixing sleeve. The plug rod is fixed in the middle section of the traction rope, and the fixing sleeve is fixed to the bottom surface of the fixing plate and inserted into the plug rod. A stop rod is fixedly mounted inside the plug rod, and a clamping block is provided inside the fixing sleeve. Multiple clamping blocks are provided, and each has a rubber pad connected to its inner side. A sliding groove is opened on the outer wall of the fixing sleeve, which is provided in multiple sets and slidably connected to a sliding sleeve. A push ring is fixedly mounted inside the sliding sleeve, and the push ring abuts against the bottom surface of the multiple sets of clamping blocks.

[0006] The present invention is further configured such that the bottom ends of the multiple sets of traction ropes are all connected with fixing bolts, and the bottom ends of the multiple sets of traction ropes are all connected to the fixing frame through fixing bolts. The fixing bolts provide the main fixing connection function and bear the connection load between the traction rope and the fixing frame under normal working conditions.

[0007] The present invention is further configured such that inclined blocks are fixedly provided on the outer side of each of the multiple sets of clamping blocks, and inclined grooves are provided on the inner wall of the fixed sleeve. Multiple sets of inclined grooves are provided and are slidably connected to multiple sets of inclined blocks respectively. The cooperation between the inclined blocks and the inclined grooves converts the axial thrust of the sliding sleeve into the radial clamping force of the clamping blocks to achieve effective clamping of the resistance rod.

[0008] The present invention is further configured such that a threaded sleeve is provided on the outer wall of the fixed sleeve, and a thrust bearing is provided between the top surface of the threaded sleeve and the sliding sleeve. The thrust bearing reduces the frictional resistance when the threaded sleeve rotates, making the operation more effortless and smooth, and improving the convenience of adjustment.

[0009] The present invention is further configured such that the outer wall of the stop rod is provided with a stop groove, and multiple sets of the stop groove are provided. The multiple sets of stop grooves provide embedding space for the rubber pad, increase the contact area and friction, form a self-locking effect, and prevent the traction rope from slipping when subjected to force.

[0010] The present invention is further configured such that a compression spring is connected to the inner side of the insertion rod, and an abutment ring is fixedly connected to the bottom end of the compression spring. When the clamping block is released, the compression spring automatically resets and pushes the abutment ring to make the clamping block quickly disengage from the blocking rod, thereby achieving a convenient unlocking operation.

[0011] The present invention is further configured such that the insertion rod is slidably connected to the inner wall of the fixed sleeve. The slidable connection between the insertion rod and the fixed sleeve allows the insertion rod to generate a small axial displacement when subjected to force, buffering the impact load and protecting the connection part from damage.

[0012] The present invention is further configured such that the outer sides of the multiple sets of blocking grooves are provided with rounded corners and abut against the multiple sets of rubber pads. The rounded corner design allows the rubber pads to be smoothly embedded into the blocking grooves when clamped to form a wedge-shaped self-locking mechanism, and facilitates quick separation when released, thereby improving the locking reliability and unlocking efficiency.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides an elevator car top fixing structure, which has the following beneficial effects: 1. A traction assembly is installed on the support frame. When the fixing bolts loosen and come off, the traction rope pulls the insert rod and the stop rod. Multiple sets of stop grooves on the outer wall of the stop rod and multiple sets of rubber pads abut against each other, causing multiple sets of clamping blocks to slide along the inclined grooves through the inclined blocks, clamping the stop rod tighter and tighter to form a self-locking mechanism to prevent imbalance. This dual fixing protection mechanism has both the main fixing of the bolts and the backup protection of self-locking clamping. When the main fixing fails, the backup protection is immediately activated to ensure that the traction rope does not come off the fixed frame, effectively avoiding serious safety accidents caused by car imbalance or falling. The multiple safety protection mechanisms significantly improve the safety and reliability of elevator operation, fully meet the strict safety requirements of elevators as special equipment, and eliminate major safety hazards.

[0014] 2. By inserting the plug rod into the fixed sleeve and fixing the bottom end of the traction rope to the fixed frame with the fixing bolt, rotating the threaded sleeve clockwise pushes the sliding sleeve along the slide groove through the thrust bearing, and pushes multiple sets of clamping blocks through the push ring to slide along the inclined groove through the inclined block, so that the rubber pads on the inner side of the multiple sets of clamping blocks abut against the outer wall of the stop rod to fix the traction rope. Maintenance personnel do not need to use special tools such as wrenches to tighten or loosen multiple bolts one by one. They only need to rotate the threaded sleeve to complete the tightening or loosening of the clamping blocks. The operation is simple and quick. The setting of the rubber pads not only ensures the clamping force, but also avoids direct metal contact that could damage the traction rope fibers. The convenient and efficient fixing and adjustment mechanism greatly shortens the maintenance time and reduces elevator downtime losses, fully meeting the requirements of modern elevator maintenance for rapid response and efficient operation.

[0015] 3. When it is necessary to unlock the fixing mechanism, rotate the threaded sleeve counterclockwise to pull the sliding sleeve to release the push ring from the contact of multiple clamping blocks. The compression spring resets and pushes the abutment ring, which pushes the multiple clamping blocks to slide along the inclined groove through the inclined block to release the contact of the rubber pad with the stop rod. The automatic reset function of the compression spring makes the unlocking operation more convenient and eliminates the need to manually loosen the clamping blocks one by one. The linkage of the abutment ring ensures that multiple clamping blocks are released simultaneously, improving the unlocking efficiency. The rounded corner design of the stop groove, together with the rubber pad, forms a wedge-shaped self-locking structure when clamped, which becomes tighter as it is pulled, and facilitates quick separation when released. The combination of automatic reset and quick unlocking mechanism makes the fixing device both reliably locked and convenient to operate, significantly improving the safety and efficiency of elevator maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an elevator car top fixing structure according to the present invention; Figure 2 This is a schematic diagram of the structure of the fixing plate in this utility model; Figure 3 This is a schematic diagram of the fixing mechanism in this utility model; Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model; Figure 5 This is a schematic diagram of the push ring and sliding sleeve in this utility model.

[0017] In the diagram: 1. Support frame; 2. Fixed frame; 3. Traction assembly; 4. Car; 5. Fixed plate; 6. Traction rope; 7. Insert rod; 8. Fixed sleeve; 9. Stop rod; 10. Clamping block; 11. Rubber pad; 12. Slide groove; 13. Slide sleeve; 14. Push ring; 15. Fixing bolt; 16. Wedge block; 17. Wedge groove; 18. Threaded sleeve; 19. Thrust bearing; 20. Stop groove; 21. Compression spring; 22. Abutment ring. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figures 1-5 An elevator car top fixing structure includes a support frame 1 and a fixing frame 2. A traction component 3 is installed on the support frame 1, and a car 4 is fixed on the fixing frame 2. A fixing plate 5 is fixed inside the fixing frame 2. The traction component 3 includes a traction rope 6. The traction rope 6 is provided in multiple sets and a fixing mechanism is provided at the bottom end. The fixing mechanism includes a plug rod 7 and a fixing sleeve 8. The plug rod 7 is fixed in the middle section of the traction rope 6. The fixing sleeve 8 is fixed on the bottom surface of the fixing plate 5 and is inserted into the plug rod 7. A stop rod 9 is fixed inside the plug rod 7. A clamping block 10 is provided inside the fixing sleeve 8. The clamping block 10 is provided in multiple sets and a rubber pad 11 is connected to the inner side of each clamping block 10. A sliding groove 12 is provided on the outer wall of the fixing sleeve 8. The sliding groove 12 is provided in multiple sets and a sliding sleeve 13 is slidably connected. A push ring 14 is fixed inside the sliding sleeve 13 and abuts against the bottom surface of the multiple sets of clamping blocks 10.

[0022] The bottom ends of multiple sets of traction ropes 6 are all connected to fixing bolts 15, and the bottom ends of multiple sets of traction ropes 6 are all connected to the fixing frame 2 through fixing bolts 15.

[0023] Multiple sets of clamping blocks 10 are fixedly provided with inclined blocks 16 on their outer sides. The inner wall of the fixing sleeve 8 is provided with inclined grooves 17. Multiple sets of inclined grooves 17 are provided and are slidably connected to multiple sets of inclined blocks 16 respectively. The outer wall of the fixed sleeve 8 is threaded with a threaded sleeve 18, and a thrust bearing 19 is connected between the top surface of the threaded sleeve 18 and the sliding sleeve 13.

[0024] The outer wall of the stop rod 9 is provided with a stop groove 20, and multiple sets of stop grooves 20 are provided.

[0025] A compression spring 21 is connected to the inner side of the insertion rod 7, and an abutment ring 22 is fixedly connected to the bottom end of the compression spring 21.

[0026] The insertion rod 7 is slidably connected to the inner wall of the fixing sleeve 8.

[0027] The outer sides of the multiple sets of blocking grooves 20 are all rounded and all abut against the multiple sets of rubber pads 11.

[0028] In this embodiment, during use, the insertion rod 7 is inserted into the fixing sleeve 8, and the bottom end of the traction rope 6 is fixedly connected to the fixing frame 2 through the fixing bolt 15. The threaded sleeve 18 is rotated clockwise to push the sliding sleeve 13 to slide along the sliding groove 12 through the thrust bearing 19, and the push ring 14 pushes the multiple sets of clamping blocks 10 to slide along the inclined groove 17 through the inclined block 16, so that the rubber pads 11 on the inner side of the multiple sets of clamping blocks 10 abut against the outer wall of the blocking rod 9, and the multiple sets of clamping blocks 10 push the abutment ring 22 to squeeze the compression spring 21, thus completing the fixation of the traction rope 6. When the fixing bolt 15 loosens and comes off, the traction rope 6 pulls the insertion rod 7 and the blocking rod 9, and the blocking groove 20 on the outer wall of the blocking rod 9 abuts against the multiple sets of rubber pads 11, so that the multiple sets of clamping blocks 10 slide along the inclined groove 17 through the inclined block 16 to clamp the blocking rod 9 tighter and tighter, preventing imbalance.

[0029] More specifically, when it is necessary to unlock the fixing mechanism, rotating the threaded sleeve 18 counterclockwise pulls the sliding sleeve 13 to release the push ring 14 from abutting the multiple sets of clamping blocks 10. The compression spring 21 resets and pushes the abutting ring 22. The abutting ring 22 pushes the multiple sets of clamping blocks 10 so that they slide along the inclined groove 17 through the inclined block 16 to release the rubber pad 11 from abutting the stop rod 9.

[0030] In summary, during use or operation of the overall equipment: When in use, insert the insertion rod 7 into the fixed sleeve 8, and fix the bottom end of the traction rope 6 to the fixed frame 2 through the fixing bolt 15. Rotate the threaded sleeve 18 clockwise to push the sliding sleeve 13 along the sliding groove 12 through the thrust bearing 19, and push the multiple sets of clamping blocks 10 through the push ring 14 to slide along the inclined groove 17 through the inclined block 16. This causes the rubber pads 11 on the inner side of the multiple sets of clamping blocks 10 to abut against the outer wall of the blocking rod 9. The multiple sets of clamping blocks 10 push the abutment ring 22 to squeeze the compression spring 21, thus fixing the traction rope 6. When the fixing bolt 15 loosens and comes off, the traction rope 6 pulls the insertion rod 7 and the blocking rod 9. The blocking groove 20 on the outer wall of the blocking rod 9 abuts against the multiple sets of rubber pads 11, causing the multiple sets of clamping blocks 10 to slide along the inclined groove 17 through the inclined block 16 to clamp the blocking rod 9 tighter and tighter, preventing imbalance.

[0031] When it is necessary to unlock the fixing mechanism, rotate the threaded sleeve 18 counterclockwise to pull the sliding sleeve 13 to release the push ring 14 from the contact of multiple sets of clamping blocks 10. The compression spring 21 resets and pushes the abutment ring 22. The abutment ring 22 pushes the multiple sets of clamping blocks 10 so that they slide along the inclined groove 17 through the inclined block 16 to release the contact of the rubber pad 11 with the stop rod 9.

[0032] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option. In all the solutions mentioned above, the operation of electrical components, unless otherwise specified, is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and wiring connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. The specific models and specifications of the electrical components involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, and therefore will not be described in detail. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator car top fixing structure, comprising a support frame (1) and a fixing frame (2), characterized in that: The support frame (1) is equipped with a traction assembly (3), the fixed frame (2) is fixed with a car (4), and the fixed frame (2) is fixed with a fixing plate (5). The traction assembly (3) includes a traction rope (6), which is provided with multiple sets and a fixing mechanism at the bottom. The fixing mechanism includes a plug rod (7) and a fixing sleeve (8). The plug rod (7) is fixed in the middle section of the traction rope (6), and the fixing sleeve (8) is fixed on the bottom surface of the fixing plate (5) and is connected to the car. Insert rod (7) is inserted, and a stop rod (9) is fixedly provided inside the insert rod (7). A clamping block (10) is provided inside the fixing sleeve (8). Multiple sets of clamping blocks (10) are provided, and rubber pads (11) are connected to the inner side of each clamping block (10). A sliding groove (12) is opened on the outer wall of the fixing sleeve (8). Multiple sets of sliding grooves (12) are provided, and sliding sleeves (13) are slidably connected. A push ring (14) is fixedly provided inside the sliding sleeve (13). The push ring (14) abuts against the bottom surface of multiple sets of clamping blocks (10).

2. The elevator car top fixing structure according to claim 1, characterized in that: multiple sets The bottom end of each traction rope (6) is connected to a fixing bolt (15), and the bottom ends of multiple sets of traction ropes (6) are connected to the fixing frame (2) through fixing bolts (15).

3. The elevator car top fixing structure according to claim 2, characterized in that: multiple sets The clamping block (10) is fixedly provided with inclined blocks (16) on the outside. The inner wall of the fixed sleeve (8) is provided with inclined grooves (17). The inclined grooves (17) are provided in multiple sets and are slidably connected to multiple sets of inclined blocks (16).

4. The elevator car top fixing structure according to claim 3, characterized in that: The outer wall of the fixed sleeve (8) is threaded with a threaded sleeve (18), and a thrust bearing (19) is connected between the top surface of the threaded sleeve (18) and the sliding sleeve (13).

5. The elevator car top fixing structure according to claim 4, characterized in that: The outer wall of the stop rod (9) is provided with a stop groove (20), and multiple sets of the stop groove (20) are provided.

6. The elevator car top fixing structure according to claim 5, characterized in that: A compression spring (21) is connected to the inner side of the insertion rod (7), and an abutment ring (22) is fixedly connected to the bottom end of the compression spring (21).

7. The elevator car top fixing structure according to claim 6, characterized in that: The insertion rod (7) is slidably connected to the inner wall of the fixing sleeve (8).

8. The elevator car top fixing structure according to claim 7, characterized in that: multiple sets The outer side of each of the blocking grooves (20) is provided with rounded corners and abuts against multiple sets of rubber pads (11).

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