A locking mechanism for elevator maintenance

Abstract

This utility model discloses a locking mechanism for elevator maintenance, including a bracket, a guide rail fixedly installed inside the bracket, multiple sets of guide rails with sliders sliding on their inner sides, a fixed beam fixed between the multiple sets of sliders, a car fixedly installed on the bottom surface of the fixed beam, a drive assembly installed inside the bracket, the drive assembly connected to the fixed beam, insertion holes opened on each of the multiple sets of guide rails, multiple sets of insertion holes, a fixing mechanism installed on the slider, the fixing mechanism including a fixing sleeve and an insertion rod, the fixing sleeve fixed to the outer wall of the slider, the insertion rod inserted into the insertion hole and the fixing sleeve, a control sleeve rotatably installed at the top of the fixing sleeve, a locking block fixedly installed inside the control sleeve, the insertion rod, as the main load-bearing component, is connected to the fixing sleeve by an independent insertion method, when the insertion rod is deformed and damaged due to long-term load, the maintenance personnel only need to simply operate the locking block to rotate and release the locking plate from the locking hole to quickly disassemble and replace the damaged insertion rod.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a locking mechanism for elevator maintenance. Background Technology

[0002] During elevator maintenance, maintenance personnel need to use specialized locking devices to reliably secure the elevator car to ensure the safety of the maintenance work. In traditional locking devices, key load-bearing components must withstand the entire weight of the car and various loads generated during maintenance. Prolonged exposure to significant mechanical stress can easily lead to plastic deformation, fatigue cracks, or even breakage of these components. When a load-bearing component is damaged, it needs to be replaced promptly to ensure maintenance safety. However, existing locking devices have load-bearing components designed as an integral structure tightly integrated with the main mechanism. Disassembling and installing these components is extremely difficult. Maintenance personnel often need to completely disassemble the entire locking device to replace a damaged load-bearing component. This maintenance method is not only complex and time-consuming but also results in the unnecessary disassembly and reassembly of numerous usable parts, severely wasting maintenance resources and significantly increasing equipment maintenance costs.

[0003] During normal elevator operation, maintenance personnel need to ensure that all maintenance equipment is safely retracted to avoid interfering with or threatening elevator operation. Existing locking devices lack effective limit protection mechanisms for their telescopic components. During elevator operation, vibrations, impacts, or accidental collisions can easily cause these components to extend automatically, a situation that is often difficult for operators to detect in time. When the elevator car approaches the maintenance location, the unexpectedly extended components may collide violently with the car or hoistway structure, causing severe damage to the maintenance equipment and elevator components. This could also lead to car jamming, a fall, or other major safety accidents, posing a serious threat to the lives of passengers and maintenance personnel. Current technology cannot effectively solve this significant safety hazard. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a locking mechanism for elevator maintenance to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a locking mechanism for elevator maintenance, comprising a bracket, a guide rail fixedly mounted inside the bracket, multiple sets of guide rails with sliders slidably mounted on their inner sides, a fixed beam fixedly mounted between the multiple sets of sliders, a car fixedly mounted on the bottom surface of the fixed beam, a driving assembly mounted inside the bracket, the driving assembly connected to the fixed beam, insertion holes opened on each of the multiple sets of guide rails, multiple sets of insertion holes, a fixing mechanism mounted on the slider, the fixing mechanism comprising a fixing sleeve and an insertion rod, the fixing sleeve fixedly mounted on the outer wall of the slider, the insertion rod inserted into the insertion hole and the fixing sleeve, a control sleeve rotatably mounted on the top of the fixing sleeve, a locking block fixedly mounted on the inner side of the control sleeve, multiple sets of locking blocks with locking holes opened on their outer walls, a locking rod fixedly mounted on the top of the insertion rod, a locking plate fixedly mounted on the outer wall of the locking rod, multiple sets of locking plates.

[0008] The present invention is further configured such that a limiting block is slidably provided on the outer wall of the control sleeve, and multiple sets of the limiting blocks are provided, each with a return spring connected to its top end. The bottom ends of the multiple sets of return springs are fixedly connected to the outer wall of the control sleeve. A limiting groove is provided on the outer wall of the fixed sleeve, and multiple sets of the limiting groove are provided, each abutting against multiple sets of limiting blocks. Through the precise cooperation between the multiple sets of limiting blocks and the limiting grooves, combined with the elastic reset function of the return springs, the control sleeve is accurately limited and automatically reset, ensuring the stability of the locked state and the reliability of the unlocking operation, and preventing the car from accidentally loosening or shifting its position during maintenance.

[0009] The present invention is further configured such that a threaded sleeve is provided on the outer wall of the fixed sleeve, and a limiting sleeve is fixedly provided on the top end of the threaded sleeve. The threaded engagement between the threaded sleeve and the fixed sleeve provides adjustable limiting control. The pushing action of the limiting sleeve achieves dual protection of the locking mechanism, ensuring the reliability of the fixing operation and the adjustability of the locking strength, and providing precise locking force control for different maintenance needs.

[0010] The present invention is further configured such that a pressure ring is fixedly provided on the inner wall of the fixed sleeve, and a compression spring is connected to the top of the insertion rod. Multiple sets of compression springs are provided, and an abutment ring is connected to the top of each compression spring. Through the elastic buffering effect of multiple sets of compression springs and the precise transmission between the abutment ring and the pressure ring, the insertion process is smoothly controlled and the connection force is evenly distributed. This effectively prevents the insertion rod from being damaged by impact during installation and disassembly and ensures the consistency of connection strength and the comfort of operation.

[0011] The present invention is further configured such that a limiting groove is provided on the outer wall of the insertion rod, and a limiting block is fixedly provided on the inner side of the fixing sleeve. Multiple sets of limiting grooves and limiting blocks are provided. The precise cooperation of multiple sets of limiting grooves and limiting blocks realizes the accurate positioning and rotation limitation of the insertion rod, prevents the insertion rod from rotating and shifting during use, and ensures the stability of the car locking and the accuracy of the fixed position.

[0012] The present invention is further configured such that each of the multiple sets of sliders is provided with a fixing hole, and each of the multiple sets of plug rods is inserted into the fixing hole. The precise insertion of the plug rods into the fixing hole realizes the reliable connection between the slider and the guide rail and the multi-point synchronous fixation, ensuring the overall stability and load-bearing capacity of the car, effectively dispersing the locking force and improving the safety and reliability of the overall structure.

[0013] The present invention is further configured such that the outer side of the multiple sets of card plates and the inner side of the card holes are provided with rounded corners. The rounded corner design of the card plates and card holes reduces the frictional resistance and wear during the insertion process, ensuring smooth insertion operation and durability for repeated use, while reducing the operating force and extending the service life of the locking mechanism.

[0014] The present invention is further configured such that both ends of the multiple sets of limiting blocks are rounded, and the inner side of the limiting sleeve is rounded. The rounded design of the limiting blocks, combined with the rounded corner structure of the limiting sleeve, achieves smooth sliding contact and uniform stress distribution, reduces contact wear, improves the smoothness of operation of the limiting mechanism, and ensures the reliability and service life of the locking and unlocking process.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a locking mechanism for elevator maintenance, which has the following advantages:

[0017] 1. This utility model, through its innovative detachable rod design and separate snap-fit ​​structure of the locking plate and the locking hole, completely solves the problems of difficult maintenance and high cost caused by the integral design of the load-bearing components of traditional locking devices. The rod, as the main load-bearing component, is connected to the fixed sleeve by an independent plug-in method. When the rod is deformed and damaged due to long-term load, the maintenance personnel only need to operate the locking block to rotate and release the snap-fit ​​between the locking plate and the locking hole to quickly disassemble and replace the damaged rod without disassembling other normal components of the entire locking device. The distributed load-bearing design of multiple sets of locking plates and locking holes effectively disperses the load-bearing stress and extends the service life of the rod, significantly reducing the frequency of maintenance and replacement costs.

[0018] 2. This utility model adopts a dual limiting protection mechanism of threaded sleeve and limiting sleeve, combined with the automatic reset function of the return spring, to provide reliable protection for the safe storage of the insertion rod. The rotation operation of the threaded sleeve pushes the limiting sleeve to abut against the limiting block to achieve forced limiting of the control sleeve, ensuring that the insertion rod is always in the fully retracted position when not in operation. The continuous elasticity of the return spring, combined with the mechanical constraint of the limiting groove, forms a multi-layer safety protection mechanism, effectively preventing the dangerous situation of the insertion rod automatically extending due to vibration, impact or accidental contact.

[0019] 3. This utility model achieves precise operation control and status visualization confirmation of the locking device through the distributed limiting design of multiple sets of limiting blocks and limiting grooves combined with the rotation control mechanism of the control sleeve. The arc-shaped design of multiple sets of limiting blocks combined with the rounded corner structure of the limiting sleeve ensures the smooth operation of the limiting operation and the durability of repeated use. The threaded engagement between the threaded sleeve and the fixed sleeve provides adjustable locking strength control. Maintenance personnel can achieve precise positioning and reliable locking of the insertion rod through simple rotation operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a locking mechanism for elevator maintenance according to the present invention;

[0021] Figure 2 This is a schematic diagram of the slide rail and slider in this utility model;

[0022] Figure 3 This is a schematic diagram of the unlocked state structure of the fixing mechanism in this utility model;

[0023] Figure 4 This is a cross-sectional view of the control sleeve and the limiting sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing sleeve and control sleeve in the disassembled state of the fixing mechanism in this utility model.

[0025] In the diagram: 1. Bracket; 2. Guide rail; 3. Slider; 4. Fixed beam; 5. Car; 6. Drive assembly; 7. Insertion hole; 8. Fixing sleeve; 9. Insertion rod; 10. Control sleeve; 11. Locking block; 12. Locking hole; 13. Locking rod; 14. Locking plate; 15. Limiting block; 16. Return spring; 17. Limiting groove; 18. Threaded sleeve; 19. Limiting sleeve; 20. Pressure ring; 21. Compression spring; 22. Abutment ring; 23. Limiting groove; 24. Limiting block; 25. Fixing hole. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Please see Figures 1-5 An elevator maintenance locking mechanism includes a bracket 1, a guide rail 2 fixedly installed inside the bracket 1, multiple sets of sliders 3 slidably installed on the inner side of the guide rail 2, a fixed beam 4 fixed between the multiple sets of sliders 3, a car 5 fixedly installed on the bottom surface of the fixed beam 4, a drive assembly 6 installed inside the bracket 1, the drive assembly 6 connected to the fixed beam 4, insertion holes 7 are opened on each of the multiple sets of guide rails 2, multiple sets of insertion holes 7 are provided, a fixing mechanism is provided on the slider 3, the fixing mechanism includes a fixing sleeve 8 and an insertion rod 9, the fixing sleeve 8 is fixed to the outer wall of the slider 3, the insertion rod 9 is inserted into the insertion hole 7 and the fixing sleeve 8, a control sleeve 10 is rotatably installed at the top of the fixing sleeve 8, a locking block 11 is fixedly installed on the inner side of the control sleeve 10, multiple sets of locking blocks 11 are provided, and locking holes 12 are opened on the outer wall of each locking block 11, a locking rod 13 is fixedly installed at the top of the insertion rod 9, a locking plate 14 is fixedly installed on the outer wall of the locking rod 13, multiple sets of locking plates 14 are provided.

[0030] The outer wall of the control sleeve 10 is provided with a limiting block 15. There are multiple sets of limiting blocks 15, and each of them is connected to a return spring 16 at its top. The bottom ends of the multiple sets of return springs 16 are fixedly connected to the outer wall of the control sleeve 10. The outer wall of the fixed sleeve 8 is provided with a limiting groove 17. There are multiple sets of limiting grooves 17, and each set abuts against the multiple sets of limiting blocks 15.

[0031] The outer wall of the fixed sleeve 8 is threaded with a threaded sleeve 18, and a limit sleeve 19 is fixedly provided at the top of the threaded sleeve 18.

[0032] A pressure ring 20 is fixedly provided on the inner wall of the fixed sleeve 8, and a compression spring 21 is connected to the top of the insertion rod 9. Multiple compression springs 21 are provided, and an abutment ring 22 is connected to the top of each spring.

[0033] The outer wall of the insertion rod 9 is provided with a limiting groove 23, and the inner side of the fixing sleeve 8 is fixed with a limiting block 24. Multiple sets of limiting grooves 23 and limiting blocks 24 are provided.

[0034] Each set of sliders 3 has a fixing hole 25, and each set of insert rods 9 is inserted into the fixing hole 25.

[0035] The outer sides of the multiple sets of card plates 14 and the inner sides of the card holes 12 are all provided with rounded corners.

[0036] The ends of the multiple sets of limiting blocks 15 are all set to be arc-shaped, and the inner side of the limiting sleeve 19 is provided with rounded corners.

[0037] In this embodiment, when the car 5 needs to be locked, the car 5 is moved by the drive assembly 6. When the car 5 moves, the slider 3 slides along the slide rail, aligning the fixing hole 25 on the slider 3 with the insertion hole 7 on the guide rail 2. The insertion rod 9 passes through the insertion hole 7 and is inserted into the fixing sleeve 8 through the fixing hole 25. Multiple sets of limiting blocks 24 are positioned and inserted into the limiting groove 23. The pressure ring 20 pushes the abutment ring 22 and squeezes multiple sets of compression springs 21. Then, the control sleeve 10 is rotated to drive multiple sets of locking blocks 11 to rotate, so that multiple sets of locking plates 14 are inserted into the locking holes 12 to limit the locking rod 13. Then, the threaded sleeve 18 is rotated clockwise to make it threadedly engage with the fixing sleeve 8. At the same time, the limiting sleeve 19 is pushed to abut against the top of multiple sets of limiting blocks 15, so that the bottom of multiple sets of limiting blocks 15 abuts against the limiting groove 17 and squeezes the return spring 16 to limit the control sleeve 10. Multiple sets of fixing mechanisms are operated in sequence to complete the locking of the car 5.

[0038] More specifically, when unlocking is required, rotating the threaded sleeve 18 counterclockwise causes the limiting sleeve 19 to release the contact with the multiple sets of limiting blocks 15. The multiple sets of reset springs 16 pull the limiting blocks 15 so that their bottom ends are disengaged from the limiting grooves 17, thereby releasing the limitation on the control sleeve 10. Rotating the control sleeve 10 causes the multiple sets of locking blocks 11 to rotate, causing the multiple sets of locking plates 14 to disengage from the locking holes 12, releasing the restriction on the locking rod 13. The multiple sets of compression springs 21 reset and push the insertion rod 9 to disengage from the fixing sleeve 8. Then, the insertion rod 9 is pulled out of the fixing hole 25 and the insertion hole 7, thereby releasing the lock on the slider 3.

[0039] In summary, during use or operation of the overall equipment: when it is necessary to lock the car 5, the drive assembly 6 controls the movement of the car 5. When the car 5 moves, the slider 3 slides along the slide rail, aligning the fixing hole 25 on the slider 3 with the insertion hole 7 on the guide rail 2. The insertion rod 9 passes through the insertion hole 7 and is inserted into the fixing hole 25 into the fixing sleeve 8. Multiple sets of limiting blocks 24 are positioned and inserted into the limiting groove 23. The pressure ring 20 pushes the abutment ring 22 and compresses multiple sets of compression springs 21. Then, the mechanism rotates... The control sleeve 10 drives multiple sets of locking blocks 11 to rotate, causing multiple sets of locking plates 14 to be inserted into the locking holes 12 to restrict the locking rod 13. Then, the threaded sleeve 18 is rotated clockwise to make it threadedly engage with the fixed sleeve 8. At the same time, the limiting sleeve 19 is pushed to abut against the top of multiple sets of limiting blocks 15, so that the bottom of multiple sets of limiting blocks 15 abuts against the limiting groove 17 and squeezes the reset spring 16 to limit the control sleeve 10. The multiple sets of fixing mechanisms are operated in sequence to complete the locking of the car 5.

[0040] When unlocking is required, rotating the threaded sleeve 18 counterclockwise causes the limiting sleeve 19 to release the contact with the multiple sets of limiting blocks 15. The multiple sets of reset springs 16 pull the limiting blocks 15 so that their bottom ends are disengaged from the limiting grooves 17, thereby releasing the limitation on the control sleeve 10. Rotating the control sleeve 10 causes the multiple sets of locking blocks 11 to rotate, causing the multiple sets of locking plates 14 to disengage from the locking holes 12, releasing the restriction on the locking rod 13. The multiple sets of compression springs 21 reset and push the insertion rod 9 to disengage from the fixing sleeve 8. Then, the insertion rod 9 is pulled out of the fixing hole 25 and the insertion hole 7, thereby releasing the lock on the slider 3.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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. A locking mechanism for elevator maintenance, comprising a bracket (1), characterized in that: The bracket (1) is fixedly provided with guide rails (2), and the guide rails (2) are provided with multiple sets of sliders (3) that slide on their inner sides. A fixed beam (4) is fixed between the multiple sets of sliders (3), and a car (5) is fixedly provided on the bottom surface of the fixed beam (4). The bracket (1) is provided with a drive assembly (6), which is connected to the fixed beam (4). Each set of guide rails (2) is provided with a socket (7), and there are multiple sets of sockets (7). A fixing mechanism is provided on the slider (3), and the fixing mechanism includes a fixing... The fixed sleeve (8) and the insert rod (9) are fixed on the outer wall of the slider (3). The insert rod (9) is inserted into the insertion hole (7) and the fixed sleeve (8). The top of the fixed sleeve (8) is rotatably provided with a control sleeve (10). The inner side of the control sleeve (10) is fixedly provided with a locking block (11). The locking block (11) is provided in multiple sets and the outer wall of each block is provided with a locking hole (12). The top of the insert rod (9) is fixedly provided with a locking rod (13). The outer wall of the locking rod (13) is fixedly provided with a locking plate (14). The locking plate (14) is provided in multiple sets.

2. The locking mechanism for elevator maintenance according to claim 1, characterized in that: The outer wall of the control sleeve (10) is provided with a limiting block (15). There are multiple sets of the limiting blocks (15), and each set of the limiting blocks (15) is connected to a reset spring (16) at its top. The bottom ends of the multiple sets of reset springs (16) are fixedly connected to the outer wall of the control sleeve (10). The outer wall of the fixed sleeve (8) is provided with a limiting groove (17). There are multiple sets of the limiting groove (17), and each set of the limiting groove abuts against the multiple sets of limiting blocks (15).

3. The locking mechanism for elevator maintenance according to claim 2, characterized in that: The outer wall of the fixed sleeve (8) is threaded with a threaded sleeve (18), and a limiting sleeve (19) is fixedly provided at the top of the threaded sleeve (18).

4. The locking mechanism for elevator maintenance according to claim 3, characterized in that: A pressure ring (20) is fixedly provided on the inner wall of the fixed sleeve (8), and a compression spring (21) is connected to the top of the insertion rod (9). Multiple sets of compression springs (21) are provided, and an abutment ring (22) is connected to the top of the spring.

5. A locking mechanism for elevator maintenance according to claim 4, characterized in that: The outer wall of the insertion rod (9) is provided with a limiting groove (23), and the inner side of the fixing sleeve (8) is fixed with a limiting block (24). Multiple sets of limiting grooves (23) and limiting blocks (24) are provided.

6. A locking mechanism for elevator maintenance according to claim 5, characterized in that: multiple sets of... Each slider (3) has a fixing hole (25), and multiple sets of the insert rods (9) are inserted into the fixing hole (25).

7. A locking mechanism for elevator maintenance according to claim 6, characterized in that: The outer side of the multiple sets of card plates (14) and the inner side of the card holes (12) are all provided with rounded corners.

8. A locking mechanism for elevator maintenance according to claim 7, characterized in that: both ends of the multiple sets of limiting blocks (15) are set as arcs, and the inner side of the limiting sleeve (19) is provided with rounded corners.

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