A synchronous wheel axle device and lifting equipment

Abstract

This utility model relates to a synchronous wheel axle device and lifting equipment, comprising: a frame, a drive assembly, and a transmission assembly. A first drive wheel and a second drive wheel are arranged on both sides of the frame, with a first wheel axle and a second wheel axle respectively passing through the interior of the first and second drive wheels. The drive assembly includes a first drive source and a second drive source, symmetrically arranged on both sides of the frame. The output end of the first drive source is connected to the first wheel axle, and the output end of the second drive source is connected to the second wheel axle. The transmission assembly includes a drive shaft, disposed between the frames, with both ends connected to the first wheel axle and the second wheel axle respectively. Flexible couplings are provided between the drive shaft and both the first and second wheel axles. In this utility model, the two motors are configured with one as a backup and the other as a single unit, providing centralized drive. If one motor fails, the other motor can safely lift the load to a safe location, increasing safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of electric hoist technology, and in particular to a synchronous wheel axle device and lifting equipment. Background Technology

[0002] An electric hoist is a small lifting machine used to help people lift, move, load, and unload heavy objects, reducing labor intensity and improving work efficiency. It can be used alone or as a lifting trolley for electric monorail cranes, electric single-girder or double-girder cranes, as well as tower cranes and gantry cranes.

[0003] The drive system of an electric hoist is the key system for its horizontal movement along the track, expanding the working range and allowing for flexible transfer of heavy objects within a designated area. Its design must balance power output, smooth operation, and track compatibility. In existing technology, to ensure the synchronicity of the drives on both sides of the electric hoist, each roller is driven by a separate drive source (geared motor). Synchronous movement of the rollers on both sides is achieved by adjusting the synchronicity of the motors. However, in actual use, if one drive source fails, the rollers on both sides will lose synchronicity, directly compromising the stability of the equipment and causing a series of safety issues. Furthermore, equipment maintenance also affects production efficiency. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the electric hoist on both sides of the drive wheel does not have a synchronous wheel axle, and the failure of the drive source on one side is prone to causing safety accidents.

[0005] To solve the above-mentioned technical problems, this utility model provides a synchronous wheel axle device, which includes: The vehicle frame has a first drive wheel and a second drive wheel on both sides, and a first axle and a second axle are respectively inserted inside the first drive wheel and the second drive wheel; The drive assembly includes a first drive source and a second drive source, which are symmetrically arranged on both sides of the frame. The output end of the first drive source is connected to the first wheel axle, and the output end of the second drive source is connected to the second wheel axle. The transmission assembly includes a drive shaft disposed between the vehicle frames. Both ends of the drive shaft are connected to the first wheel axle and the second wheel axle, respectively. Flexible couplings are provided between the drive shaft and the first wheel axle and the second wheel axle.

[0006] In one embodiment of the present invention, the elastic connecting shaft includes a pair of claw discs and a plum blossom-shaped elastic element. The pair of claw discs are disposed on both sides of the plum blossom-shaped elastic element, and both of the claw discs are engaged with the plum blossom-shaped elastic element.

[0007] In one embodiment of this utility model, the flexible coupling is detachably connected to the first wheel axle, the second wheel axle, and the transmission shaft.

[0008] In one embodiment of the present invention, retaining rings are provided at both ends of the flexible coupling, and the surfaces of the first wheel shaft, the second wheel shaft and the transmission shaft are all provided with grooves that cooperate with the retaining rings.

[0009] In one embodiment of this utility model, rolling bearings are provided between the first axle and the second axle and the vehicle frame.

[0010] In one embodiment of this utility model, a bearing housing is provided on the frame, and the rolling bearing is embedded in the bearing housing.

[0011] In one embodiment of the present invention, the circumferential surfaces of the first axle and the second axle are provided with external teeth, and the surfaces of the first drive wheel and the second drive wheel are provided with internal teeth that cooperate with the external teeth.

[0012] A lifting device includes the aforementioned synchronous wheel axle assembly, and a winch is provided on the top of the frame.

[0013] In one embodiment of this utility model, buffer blocks are provided at both ends of the frame along the length direction.

[0014] In one embodiment of this utility model, driven wheels are also provided on both sides of the frame.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: The present invention relates to a synchronous wheel axle device and lifting equipment. The synchronous wheel axle device of the present invention enables the two geared motors configured in the trolley running mechanism to be used in a centralized manner with one as a backup and the other as the main drive. This ensures that if one motor fails, the other motor can safely lift the load to a safe position, thereby increasing safety and reliability. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Front view of the mid-frame; Figure 3 for Figure 2 A partial structural diagram at point A in the middle; Figure 4 for Figure 2 A schematic diagram of the structure of the first wheel axle and the first drive wheel; Figure 5 for Figure 2 Schematic diagram of a flexible coupling; Figure 6 for Figure 1 Axonometric view of the center frame; Explanation of reference numerals in the accompanying drawings: 1. Frame; 2. Drive assembly; 3. Transmission assembly; 4. Winch; 5. Buffer block; 11. First drive wheel; 12. Second drive wheel; 13. First axle; 14. Second axle; 15. Driven wheel; 21. First drive source; 22. Second drive source; 23. Rolling bearing; 24. Bearing housing; 31. Drive shaft; 32. Flexible coupling; 33. Retaining ring; 111. Internal gear; 131. External gear; 132. Slot; 321. Claw disc; 322. Plum blossom-shaped elastic element. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0018] Reference Figures 1-6 As shown, this utility model discloses a synchronous wheel axle device, which includes: The frame 1 has a first drive wheel 11 and a second drive wheel 12 on both sides, and a first wheel axle 13 and a second wheel axle 14 respectively pass through the first drive wheel 11 and the second drive wheel 12. The drive assembly 2 includes a first drive source 21 and a second drive source 22. The first drive source 21 and the second drive source 22 are symmetrically arranged on both sides of the frame 1. The output end of the first drive source 21 is connected to the first wheel axle 13, and the output end of the second drive source 22 is connected to the second wheel axle 14. The transmission assembly 3 includes a transmission shaft 31, which is disposed between the frames 1. Both ends of the transmission shaft 31 are connected to the first wheel axle 13 and the second wheel axle 14, respectively. Flexible couplings 32 are provided between the transmission shaft 31 and the first wheel axle 13 and the second wheel axle 14.

[0019] In this invention, the frame 1 serves as a support, and a first drive wheel 11 and a second drive wheel 12 are symmetrically mounted on both sides of the frame 1. The first drive wheel 11 and the second drive wheel 12 are connected to the frame 1 via a first wheel axle 13 and a second wheel axle 14, respectively. A first drive source 21 drives the first wheel axle 13 to rotate the first drive wheel 11, and a second drive source 22 drives the second wheel axle 14 to rotate the second drive wheel 12. The two sets of drive sources are electrically connected to achieve synchronous drive of the two sets of drive wheels. The first wheel axle 13 and the second wheel axle 14 are connected via a transmission shaft 31. Specifically, both ends of the transmission shaft 31 are connected to the first wheel axle 13 and the second wheel axle 14 via flexible couplings 32, respectively. As a preferred embodiment of this invention, the use of flexible couplings 32 can compensate for axial, radial, and angular deviations, reducing the requirements for installation accuracy.

[0020] In actual use, the first drive source 21 and the second drive source 22 drive the first drive wheel 11 and the second drive wheel 12 to rotate, respectively. The two sets of drive sources cooperate to achieve synchronous movement of the two sets of drive wheels. When one set of drive sources fails, the other drive source continues to work. Since a transmission shaft 31 is provided between the first wheel axle 13 and the second wheel axle 14, the synchronous rotation of the first drive wheel 11 and the second drive wheel 12 can continue to be guaranteed, stably lifting the load to a safe position and increasing safety.

[0021] The synchronous wheel axle device in this invention allows the two geared motors configured in the trolley running mechanism to operate with one as a backup and the other as a single unit, providing centralized drive. This ensures that if one motor fails, the other motor can safely lift the load to a safe location, increasing safety and reliability.

[0022] Furthermore, the elastic connecting shaft includes a pair of claw discs 321 and a plum blossom-shaped elastic element 322. The pair of claw discs 321 are disposed on both sides of the plum blossom-shaped elastic element 322, and both of the claw discs 321 are engaged with the plum blossom-shaped elastic element 322.

[0023] As a preferred embodiment of this utility model, a plum blossom-shaped flexible coupling 32 is adopted, in which a pair of claw discs 321 are fitted on both sides of the plum blossom-shaped elastic element 322, and a pair of grippers are respectively connected to the wheel axle and the drive shaft 31. The plum blossom-shaped elastic element 322 can reduce shock and buffer, and improve dynamic performance.

[0024] Furthermore, the flexible coupling 32 is detachably connected to the first wheel axle 13, the second wheel axle 14, and the drive shaft 31. Specifically, both ends of the coupling are keyed to the first wheel axle 13, the second wheel axle 14, and the drive shaft 31.

[0025] Furthermore, the flexible coupling 32 is provided with retaining rings 33 at both ends, and the surfaces of the first wheel shaft 13, the second wheel shaft 14 and the transmission shaft 31 are all provided with grooves 132 that cooperate with the retaining rings 33.

[0026] Specifically, the retaining ring 33 can limit the axial displacement of the flexible coupling 32, ensuring the stability of the connection of the flexible coupling 32. In the actual assembly process, after the flexible coupling 32 is installed, the retaining ring 33 is then secured in the retaining groove 132.

[0027] Furthermore, rolling bearings 23 are provided between the first axle 13 and the second axle 14 and the frame 1. The frame 1 is provided with a bearing seat 24, and the rolling bearings 23 are embedded in the bearing seat 24.

[0028] Specifically, the rolling bearing 23 provides support for the first wheel axle 13 and the second wheel axle 14, reducing motion resistance through rolling friction and maintaining the normal working position and rotational accuracy of the first wheel axle 13 and the second wheel axle 14. In the actual assembly process, the bearing housing 24 is first installed on the frame 1, and then the rolling bearing 23 is installed in the bearing housing 24.

[0029] Furthermore, the circumferential surfaces of the first wheel axle 13 and the second wheel axle 14 are provided with external teeth 131, and the surfaces of the first drive wheel 11 and the second drive wheel 12 are provided with internal teeth 111 that cooperate with the external teeth 131.

[0030] Specifically, during the actual installation process, the external teeth 131 of the first wheel shaft 13 and the second wheel shaft 14 are respectively engaged with the internal teeth 111 of the first drive wheel 11 and the second drive wheel 12. The drive source drives the drive wheel to rotate synchronously while the drive wheel shaft rotates.

[0031] A lifting device includes the synchronous wheel axle device described in the above embodiments, and a winch 4 is provided on the top of the frame 1. Specifically, the winch 4 is installed on the top of the frame 1 to realize the lifting of the load.

[0032] Furthermore, buffer blocks 5 are provided at both ends of the frame 1 along its length.

[0033] Specifically, two sets of buffer blocks 5 are provided at both ends of the moving direction of the frame 1. When the frame 1 moves to both ends of the track, the buffer blocks 5 can provide shock absorption.

[0034] Furthermore, driven wheels 15 are also provided on both sides of the frame 1. Specifically, the first drive source 21 and the second drive source 22 on both sides of the frame 1 respectively drive the first drive wheel 11 and the second drive wheel 12 to rotate, and the rotation of the first drive wheel 11 and the second drive wheel 12 drives the driven wheels 15 to rotate.

[0035] In summary, this utility model introduces a synchronous wheel axle device and lifting equipment. In actual use, the first drive source 21 and the second drive source 22 respectively drive the first drive wheel 11 and the second drive wheel 12 to rotate, and the two sets of drive sources cooperate to achieve synchronous movement of the two sets of drive wheels. When one set of drive sources fails, the other drive source continues to work. Since a transmission shaft 31 is provided between the first wheel axle 13 and the second wheel axle 14, the synchronous rotation of the first drive wheel 11 and the second drive wheel 12 can continue to be guaranteed, stably lifting the load to a safe position and increasing safety. The synchronous wheel axle device in this utility model allows the two geared motors configured in the trolley running mechanism to be used in a one-for-one standby configuration, with centralized drive, ensuring that if one motor fails, the other motor can safely lift the load to a safe position, increasing safety and reliability.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A synchronous wheel axle device, characterized in that, include: The vehicle frame has a first drive wheel and a second drive wheel on both sides, and a first axle and a second axle are respectively inserted inside the first drive wheel and the second drive wheel; The drive assembly includes a first drive source and a second drive source, which are symmetrically arranged on both sides of the frame. The output end of the first drive source is connected to the first wheel axle, and the output end of the second drive source is connected to the second wheel axle. The transmission assembly includes a drive shaft disposed between the vehicle frames. Both ends of the drive shaft are connected to the first wheel axle and the second wheel axle, respectively. Flexible couplings are provided between the drive shaft and the first wheel axle and the second wheel axle.

2. The synchronous wheel axle device according to claim 1, characterized in that: The flexible coupling includes a pair of claw discs and a plum blossom-shaped elastic element. The pair of claw discs are disposed on both sides of the plum blossom-shaped elastic element, and both of the claw discs are engaged with the plum blossom-shaped elastic element.

3. The synchronous wheel axle device according to claim 1, characterized in that: The flexible coupling is detachably connected to the first wheel axle, the second wheel axle, and the drive shaft.

4. The synchronous wheel axle device according to claim 1, characterized in that: The flexible coupling is provided with retaining rings at both ends, and the surfaces of the first wheel shaft, the second wheel shaft and the transmission shaft are all provided with grooves that cooperate with the retaining rings.

5. The synchronous wheel axle device according to claim 1, characterized in that: Rolling bearings are provided between the first and second wheel axles and the vehicle frame.

6. The synchronous wheel axle device according to claim 5, characterized in that: The frame is provided with a bearing housing, and the rolling bearing is embedded in the bearing housing.

7. The synchronous wheel axle device according to claim 1, characterized in that: Both the first and second axles have external teeth on their circumferential surfaces, and both the first and second drive wheels have internal teeth that mate with the external teeth on their surfaces.

8. A lifting device, comprising the synchronous wheel axle assembly as described in any one of claims 1-7, characterized in that: A winch is installed on the top of the vehicle frame.

9. The lifting equipment according to claim 8, characterized in that: The frame is provided with buffer blocks at both ends along its length.

10. The lifting equipment according to claim 8, characterized in that: The frame is also equipped with driven wheels on both sides.

Images