Driving mechanism for elevator

Abstract

The utility model relates to the technical field of elevator equipment, in particular to a driving mechanism for an elevator, which comprises a main motor, a worm, a worm gear, a shaft sleeve, a connecting conical block, a spring, a rotating shaft, an inserting sleeve and a standby motor. A shaft sleeve with a conical surface is arranged in the worm gear, one end of the connecting conical block is clamped with the plug bush, and the other end of the connecting conical block abuts against the spring. The rotating shaft is slidably connected with the connecting conical block through a flat key, and the plug bush is connected with the output end of the standby motor. According to the device, through redundancy design of the main motor and the standby motor, it is ensured that the standby motor can be switched rapidly when a fault occurs, and continuous operation is ensured. The modular design simplifies maintenance, reduces maintenance cost, and improves system reliability and maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, specifically a drive mechanism for a hoisting machine. Background Technology

[0002] A hoist is a mechanical device specifically designed for conveying materials vertically or at an incline. It is widely used in various industries such as mining, construction, ports, and grain processing. Its main function is to transport goods from a lower position to a higher position or vice versa, thereby achieving efficient material movement. Based on different working principles and application scenarios, hoists can be classified into several types, including bucket elevators, belt elevators, and chain elevators.

[0003] In existing technologies, there are many types of elevators, among which the sprocket and chain elevator is a relatively common one. Sprocket and chain elevators typically use a motor as the drive mechanism. The motor drives a shaft fixedly connected to its output end to rotate, which in turn drives the sprocket to rotate, causing the sprocket and chain to mesh, thereby pulling the lifting plate to achieve the lifting and lowering operation of materials. This structure is simple and reliable, and can adapt to different working conditions over a wide range.

[0004] When the motor fails, since the entire system relies on only a single motor as the drive mechanism, the entire equipment must be stopped in the event of motor failure, and the motor must be disassembled for repair or replacement. This not only interrupts the normal material transportation process, leading to a decrease in production efficiency, but also increases maintenance costs and time consumption. Therefore, this utility model proposes a drive mechanism for a hoist to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a drive mechanism for a hoist to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drive mechanism for a hoist, comprising: a main motor, a worm gear fixedly connected to the output end of the main motor, a worm wheel meshing on one side of the worm gear, a bushing fixedly sleeved inside the worm wheel, a conical surface opened on the inner ring surface of the bushing, a connecting cone block provided in the conical surface, one end of the connecting cone block movably engaging with one end of the insert sleeve, the other end of the connecting cone block abutting with one end of a spring, the other end of the spring abutting with the connecting block, the outer ring surface of the connecting block fixedly connected to the bushing, the inner ring surface of the connecting cone block slidably connected to the rotating shaft via a flat key, the inner ring surface of the connecting block rotatably sleeved on one side of the rotating shaft, the other side of the rotating shaft slidably connected to the insert sleeve, and a slot opened on the other end of the insert sleeve;

[0007] A plug-in block is provided on one side of the slot. The plug-in block is fixedly connected to the output end of the standby motor. An adjustment mechanism is provided at the bottom of the standby motor.

[0008] Preferably, the main motor is fixedly mounted on one side of the top of the frame, and the output end of the main motor is fixedly connected to the worm gear through a coupling.

[0009] Preferably, the worm gear is rotatably sleeved inside the U-shaped frame, and the bushing is rotatably sleeved inside the support base. The bottom of both the U-shaped frame and the support base are fixedly connected to the machine frame through connecting plates.

[0010] Preferably, one end of the connecting cone has a slot, and one end of the insert is fixedly connected to a round protrusion. The slot and the round protrusion are slidably engaged. The inner surface of the connecting cone has a sliding groove, which is slidably connected to the flat key.

[0011] Preferably, the adjustment mechanism includes a limiting groove opened at the bottom of the frame near the surface of the standby motor, the limiting groove being fixedly connected to the bottom of the slider, the top of the slider being fixedly connected to the standby motor, and a threaded rod being threadedly connected to the slider, with both sides of the threaded rod being rotatably sleeved in the bearing seat.

[0012] Preferably, the bottom of the bearing housing is fixedly connected to the frame, a handwheel is fixedly sleeved at the end of the threaded rod away from the insert sleeve, the insert block is slidably inserted into the slot, and positioning holes are provided on both sides of the limiting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This drive mechanism not only includes a main motor as the primary power source but also cleverly incorporates a backup motor. In the event of a main motor failure, the system can quickly switch to the backup motor via an external terminal control device. This redundancy design ensures that the hoist can continue operating even if the main motor fails, avoiding material transport interruptions and reduced production efficiency due to downtime for maintenance. Furthermore, the triangular design of the slots and plug-in blocks guarantees a quick and stable connection between the backup motor output and the drive mechanism, further enhancing the system's emergency response capability.

[0015] 2. The flexible connection and relative movement between components are achieved through worm gear transmission, conical surface fit, and spring limiting structures. This eliminates the need for large-scale disassembly of the entire system when maintaining or replacing parts, reducing maintenance time and workload. In particular, when replacing or repairing a motor, a spare motor can be used to maintain operation, while the faulty motor can be easily removed, significantly reducing maintenance costs and shortening the repair cycle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the overall structure of this utility model;

[0018] Figure 3This is a bottom view of the internal structure of this utility model;

[0019] Figure 4 This is a top view of the internal structure of this utility model;

[0020] Figure 5 This is a side view of the internal structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the bushing structure of this utility model.

[0022] In the diagram: 1. Main motor; 2. Worm gear; 3. Worm wheel; 4. Bushing; 5. Conical surface; 6. Connecting cone block; 7. Insert sleeve; 8. Spring; 9. Connecting block; 10. Flat key; 11. Rotating shaft; 12. Slot; 13. Insertion block; 14. Spare motor; 15. Frame; 16. U-shaped frame; 17. Support base; 18. Connecting plate; 19. Slot; 20. Round protrusion; 21. Slide groove; 22. Limiting groove; 23. Slider; 24. Threaded rod; 25. Bearing seat; 26. Handwheel; 27. Positioning hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figures 1 to 6This utility model provides a technical solution: a drive mechanism for a hoist, comprising: a main motor 1, which is electrically connected to an external terminal control device; a worm gear 2 is fixedly connected to the output end of the main motor 1, thereby driving the worm gear 2 to rotate; a worm wheel 3 meshes with one side of the worm gear 2, and the worm gear 2 and worm wheel 3 mesh and transmit power; a bushing 4 is fixedly sleeved inside the worm wheel 3; a conical surface 5 is opened on the inner ring surface of the bushing 4; a connecting cone block 6 is arranged inside the conical surface 5; the inner conical surface of the bushing 4 cooperates with the outer conical surface of the connecting cone block 6; one end of the connecting cone block 6 is movably engaged with one end of the insert sleeve 7; the other end of the connecting cone block 6 abuts against one end of a spring 8; and the other end of the spring 8 is engaged with a connecting block 9. The connecting block 9 abuts against the spring 8 and limits the spring 8. The outer ring surface of the connecting block 9 is fixedly connected to the bushing 4. The inner ring surface of the connecting cone block 6 is slidably connected to the rotating shaft 11 through the flat key 10. The limiting effect of the flat key 10 allows the connecting cone block 6 to drive the rotating shaft 11 to rotate. The inner ring surface of the connecting block 9 is rotatably sleeved on one side of the rotating shaft 11. The other side of the rotating shaft 11 is slidably connected to the insert sleeve 7. The rotating shaft 11 limits the insert sleeve 7. The other end of the insert sleeve 7 has a slot 12. A small gear is fixedly sleeved on the end of the rotating shaft 11 away from the insert sleeve 7. The small gear meshes with a large gear on one side of it. A connecting shaft is fixedly sleeved inside the large gear. The connecting shaft is rotatably sleeved in the connecting seat. A sprocket is fixedly sleeved on one end of the connecting shaft.

[0025] A plug-in block 13 is provided on one side of the slot 12. Both the slot 12 and the plug-in block 13 are triangular. The plug-in block 13 is fixedly connected to the output end of the backup motor 14. The backup motor 14 is electrically connected to an external terminal control device. An adjustment mechanism is provided at the bottom of the backup motor 14, which facilitates the adjustment of the position of the backup motor 14.

[0026] When the hoist is operating normally, it is started by the main motor 1. The main motor 1 drives the worm 2, which is fixedly connected to its output end, to rotate, thereby causing the worm 2 to mesh with the worm wheel 3. The worm wheel 3 then drives the bushing 4, which is fixedly sleeved inside it, to rotate. Since there is a spring 8 between the connecting block 9 and the connecting cone block 6, the spring force of the spring 8 pushes one end of the connecting cone block 6, so that its outer cone surface fits against the inner cone surface of the bushing 4. Therefore, the connecting cone block 6 and the worm wheel 3 rotate together. At the same time, the other end of the connecting cone block 6 is engaged with one end of the insert sleeve 7. Then, through the limit of the flat key 10 on the rotating shaft 11, the rotating shaft 11 and the insert sleeve 7 are driven to rotate simultaneously. This causes the rotating shaft 11 to drive the small gear to move. The small gear meshes with the large gear on one side, and the large gear drives the sprocket to rotate through the connecting shaft, thus facilitating the lifting transmission of the subsequent mechanism. When the main motor 1 fails unexpectedly, the position of the backup motor 14 is adjusted by the adjusting machine, so that the backup motor 14 drives the insert block. 13 is inserted into slot 12 and pushed into slot 12, causing sleeve 7 to push against connecting cone 6. The outer cone surface of connecting cone 6 no longer fits against the cone surface 5 on the inner ring surface of bushing 4. At this time, spring 8 is compressed. Then, the backup motor 14 is started by controlling the backup motor 14. The backup motor 14, through the cooperation of the insert block 13 and slot 12, causes sleeve 7 to drive connecting cone 6 to rotate. Since connecting cone 6 does not fit against cone surface 5, it will not drive bushing 4 to rotate. Connecting cone 6 then drives rotating shaft 11 to rotate through the limit of flat key 10, thus ensuring the normal operation of subsequent transmission. This avoids the need to stop the entire equipment operation and disassemble the main motor 1 for repair or replacement when the main motor 1 fails. This would not only interrupt the normal material transportation process and reduce production efficiency, but also increase maintenance costs and time consumption. At the same time, the backup motor 14 can disassemble the main motor 1 during operation, saving time.

[0027] The main motor 1 is fixedly installed on one side of the top of the frame 15, which supports the entire device. The output end of the main motor 1 is fixedly connected to the worm gear 2 through a coupling. The worm gear 2 is rotatably sleeved in the U-shaped frame 16, which supports the worm gear 2. The bushing 4 is rotatably sleeved in the support seat 17, which ensures the stability of the bushing 4's rotation. The bottom of the U-shaped frame 16 and the support seat 17 are both fixedly connected to the frame 15 through a connecting plate 18. One end of the connecting cone block 6 has a slot 19, and one end of the insert sleeve 7 is fixedly connected to a round protrusion 20. The slot 19 and the round protrusion 20 are slidably engaged, and the slot 19 limits the round protrusion 20, thereby facilitating the transmission between the connecting cone block 6 and the insert sleeve 7. The inner ring surface of the connecting cone block 6 has a sliding groove 21, which is slidably connected to the flat key 10.

[0028] The adjustment mechanism includes a limiting groove 22 at the bottom of the frame 15 near the surface of the backup motor 14. The limiting groove 22 is fixedly connected to the bottom of the slider 23 and limits the slider 23. The top of the slider 23 is fixedly connected to the backup motor 14. A threaded rod 24 is threadedly connected to the slider 23. The two sides of the threaded rod 24 are rotatably sleeved in the bearing seat 25 and limit the threaded rod 24. The bottom of the bearing seat 25 is fixedly connected to the frame 15. A handwheel 26 is fixedly sleeved at the end of the threaded rod 24 away from the insert 7. The insert block 13 is slidably inserted into the slot 12. Positioning holes 27 are provided on both sides of the limiting groove 22 to facilitate the fixing of the backup motor 14.

[0029] By adjusting the mechanism, when the backup motor 14 needs to be used, the bolts on the backup motor 14 are first removed, and then the handwheel 26 is turned to rotate the threaded rod 24. Since the threaded rod 24 is threadedly connected to the slider 23, it will drive the slider 23 to move. The slider 23 slides under the limit of the slide groove 21, which in turn drives the backup motor 14 to move closer to the plug sleeve 7 until the plug block 13 is inserted into the slot 12 and the plug sleeve 7 pushes the connecting cone block 6, and the spring 8 is compressed. At this time, the backup motor 14 is fixed by the cooperation of the bolt and the positioning hole 27. Then, the backup motor 14 can be started to make the entire drive mechanism continue to run, avoiding the time spent waiting for maintenance.

[0030] 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 drive mechanism for a hoist, comprising a main motor (1), characterized in that: The output end of the main motor (1) is fixedly connected to a worm (2), a worm wheel (3) is meshed on one side of the worm (2), a bushing (4) is fixedly sleeved inside the worm wheel (3), a conical surface (5) is opened on the inner ring surface of the bushing (4), a connecting cone (6) is provided in the conical surface (5), one end of the connecting cone (6) is movably engaged with one end of the insert (7), the other end of the connecting cone (6) abuts against one end of the spring (8), the other end of the spring (8) abuts against the connecting block (9), the outer ring surface of the connecting block (9) is fixedly connected to the bushing (4), the inner ring surface of the connecting cone (6) is slidably connected to the rotating shaft (11) through a flat key (10), the inner ring surface of the connecting block (9) is rotatably sleeved on one side of the rotating shaft (11), the other side of the rotating shaft (11) is slidably connected to the insert (7), and a slot (12) is opened on the other end of the insert (7); A plug-in block (13) is provided on one side of the slot (12). The plug-in block (13) is fixedly connected to the output end of the spare motor (14). An adjustment mechanism is provided at the bottom of the spare motor (14).

2. The drive mechanism for an elevator according to claim 1, characterized in that: The main motor (1) is fixedly installed on one side of the top of the frame (15), and the output end of the main motor (1) is fixedly connected to the worm gear (2) through a coupling.

3. The drive mechanism for an elevator according to claim 2, wherein: The worm gear (2) is rotatably sleeved in the U-shaped frame (16), and the bushing (4) is rotatably sleeved in the support seat (17). The bottom of the U-shaped frame (16) and the support seat (17) are fixedly connected to the frame (15) through the connecting plate (18).

4. The drive mechanism for an elevator according to claim 1, wherein: The connecting cone (6) has a slot (19) at one end, and a round protrusion (20) is fixedly connected to one end of the sleeve (7). The slot (19) and the round protrusion (20) are slidably engaged. The inner ring surface of the connecting cone (6) has a sliding groove (21), which is slidably connected to the flat key (10).

5. The drive mechanism for an elevator according to claim 1, wherein: The adjustment mechanism includes a limiting groove (22) opened at the bottom of the frame (15) near the surface of the backup motor (14). The limiting groove (22) is fixedly connected to the bottom of the slider (23). The top of the slider (23) is fixedly connected to the backup motor (14). A threaded rod (24) is threadedly connected inside the slider (23). The two sides of the threaded rod (24) are rotatably sleeved in the bearing seat (25).

6. A drive mechanism for an elevator as defined in claim 5, characterized in that: The bottom of the bearing seat (25) is fixedly connected to the frame (15), and a handwheel (26) is fixedly sleeved on the end of the threaded rod (24) away from the insert (7). The insert block (13) is slidably inserted into the slot (12), and positioning holes (27) are provided on both sides of the limiting groove (22).

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