Coupling device capable of enhancing stability

Abstract

The invention relates to the technical field of couplings, and discloses a stability-enhanced coupling device which comprises a coupling body, a driving side transmission shaft and a driven side transmission shaft are arranged at the two ends of the coupling body respectively, one side of the driving side transmission shaft is arranged in the coupling body, and a motor shaft mounting hole is formed in the surface of the other side of the driving side transmission shaft; a motor shaft mounting hole is formed in the coupling body, a motor shaft is sleeved with the motor shaft mounting hole, a plurality of coupling threaded holes are formed in the coupling body, a plurality of motor shaft threaded holes are formed in the motor shaft, and the coupling threaded holes and the motor shaft threaded holes are fixedly mounted through first bolts and used for fixedly mounting the motor shaft in the motor shaft mounting hole. The first connecting key and the second connecting key are used for positioning in the circumferential direction, circumferential sliding is effectively avoided, even under the working conditions of high torque and large impact, tight connection can still be kept, stable power transmission is guaranteed, and faults caused by loose connection of equipment are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of couplings, and specifically to a coupling device with enhanced stability. Background Art

[0002] In the field of modern mechanical transmission, the coupling, as a key component for connecting different shaft components and transmitting torque, directly affects the stability and operating efficiency of the entire mechanical system. With the continuous development of industrial technology, the performance requirements for couplings in various mechanical equipment are becoming increasingly stringent, and many problems have gradually emerged in the practical application of traditional couplings.

[0003] In terms of connection stability, the connection methods between traditional couplings and motor shafts and hub sleeves are often relatively simple. Commonly, a single bolt connection or key connection is relied upon. When facing complex working conditions, such as high-speed operation, frequent start-stop, sudden load changes, etc., it is extremely easy for the connection to become loose. The motor shaft wobbles within the coupling, which not only leads to unstable torque transmission but may also cause wear and fatigue damage to mechanical components, reducing the service life of the equipment. At the same time, the risk of the hub sleeve detaching from the coupling cannot be ignored. Once detachment occurs, it will seriously affect the normal operation of the entire mechanical transmission system and may even cause safety accidents.

[0004] In terms of torque transmission performance, traditional couplings are difficult to meet the requirements of asymmetric loads. When the main transmission side bears a high-load torque, ordinary connection structures and surface designs cannot provide sufficient friction and torque transmission capabilities, resulting in low power transmission efficiency and large energy losses. On the driven side, when the load change is relatively small, traditional couplings lack good adaptability and cannot flexibly adjust torque transmission, affecting the operating stability and economy of the entire system. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present application provides a coupling device with enhanced stability.

[0007] (2) Technical Solutions

[0008] To solve the above problems, the present application provides the following technical solution: a coupling device with enhanced stability, including a coupling body. At both ends of the coupling body, a main-side drive shaft and a slave-side drive shaft are respectively arranged. One side of the main-side drive shaft is arranged inside the coupling body, and on the other side surface, a motor shaft mounting hole is provided. A motor shaft is sleeved in the motor shaft mounting hole. A plurality of coupling threaded holes are provided on the coupling body, and a plurality of motor shaft threaded holes are provided on the motor shaft. The plurality of coupling threaded holes penetrate into the motor shaft mounting hole and correspond to the motor shaft threaded holes. The coupling threaded holes and the motor shaft threaded holes are fixedly installed through first bolts for fixedly installing the motor shaft in the motor shaft mounting hole.

[0009] One side of the slave-side drive shaft is slidably arranged inside the coupling body, and a hub sleeve is sleeved on the other side. A hub sleeve threaded hole is provided at the other end of the coupling body. A second bolt is arranged on one side of the hub sleeve, and the second bolt is threadedly connected to the hub sleeve threaded hole. The hub sleeve is installed at the other end of the coupling body through the second bolt.

[0010] Preferably, main-side clamping grooves and slave-side clamping grooves are respectively provided at both ends of the coupling body. The main-side drive shaft is arranged inside the main-side clamping groove, and the slave-side drive shaft is slidably arranged inside the slave-side clamping groove. Protrusions are provided inside both the main-side clamping groove and the slave-side clamping groove, and the protrusions are arranged in a circumferential array on the inner sides of the main-side clamping groove and the slave-side clamping groove.

[0011] Preferably, mounting grooves are respectively provided on one side of the main-side clamping groove and the slave-side clamping groove close to the edge of the coupling body. A fixing ring is arranged inside the mounting groove; a threaded hole is provided on the mounting groove, and a mounting hole is provided on the fixing ring. The mounting hole and the threaded hole correspond to each other, and the fixing ring is installed on both sides of the coupling body through bolts passing through the threaded hole and the mounting hole.

[0012] Preferably, a partition is arranged inside the main-side clamping groove, and a limiting ring is arranged inside the slave-side clamping groove. An installation post is arranged inside the partition, and a spring is sleeved on the installation post. The other side of the spring contacts one side of the slave-side drive shaft for pushing the slave-side drive shaft to slide inside the slave-side clamping groove.

[0013] Preferably, a main-side plum blossom clamping block is arranged on one side of the main-side drive shaft installed inside the coupling body, and the main-side plum blossom clamping block is adapted to the main-side clamping groove; a slave-side plum blossom clamping block is arranged on one side of the slave-side drive shaft installed inside the coupling body, and the slave-side plum blossom clamping block is adapted to the slave-side clamping groove.

[0014] Preferably, the motor shaft mounting hole is provided with a plurality of first coupling keyways along the opening direction, the connecting end of the motor shaft and the motor shaft mounting hole is provided with a plurality of motor shaft keyways, the motor shaft keyways match the first coupling keyways, and a first connecting key is provided in the motor shaft keyways and the first coupling keyways for installing the coupling body on the motor shaft along the motor shaft mounting hole.

[0015] Preferably, the threaded hole of the motor shaft and the threaded hole of the coupling are connected by a first bolt, and a first gasket is provided at the contact portion between the first bolt and the surface of the coupling body, and the first gasket is sleeved on the first bolt.

[0016] Preferably, a plurality of second coupling keyways are provided at one end where the coupling body and the hub sleeve are installed, and a plurality of hub sleeve keyways are provided at the installation end where the hub sleeve and the coupling body are installed. The second coupling keyways match the hub sleeve keyways, and a second connecting key is provided in the second coupling keyways and the hub sleeve keyways for installing the hub sleeve on the other end of the coupling body.

[0017] Preferably, the second bolt is sleeved with a second gasket, and the second gasket is arranged at the other end of the second bolt and the wheel hub sleeve.

[0018] Preferably, the first gasket and the second bolt are made of elastic material.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present application provides a coupling device with enhanced stability, which has the following beneficial effects:

[0021] 1. The coupling device with enhanced stability has a coupling threaded hole in the motor shaft mounting hole corresponding to the motor shaft threaded hole, which is fastened with a first bolt to limit the movement of the motor shaft in the axial direction to prevent it from coming out of the coupling body; at the same time, the matching design of the motor shaft keyway and the first coupling keyway, as well as the hub sleeve keyway and the second coupling keyway, uses the first connecting key and the second connecting key for positioning in the circumferential direction, effectively avoiding circumferential sliding, and can still maintain a tight connection even under high torque and large impact conditions, thereby ensuring stable power transmission and reducing equipment failures caused by loose connections.

[0022] 2. In the coupling device with enhanced stability, the first gasket is located at the contact position between the first bolt and the surface of the coupling body, and the second gasket is located at the other end of the second bolt and the hub sleeve. During the tightening process of the bolts, they use their own elastic deformation to fill the gap and increase the friction, which can not only effectively prevent the bolts from loosening due to external factors such as vibration and impact, but also disperse the pressure when tightening the bolts, reduce the risk of fatigue damage to the bolts, extend the service life of the coupling device, reduce equipment downtime for maintenance, and improve production efficiency.

[0023] 3. For the coupling device with enhanced stability, the internal bumps on the main-side transmission shaft are in a high-density corrugated shape, while the internal bumps on the slave-side transmission shaft have relatively sparse corrugations. During torque transmission, the main side can provide greater frictional force and torque transmission capacity to meet high-load requirements; the slave side can better adapt to small load changes while ensuring torque transmission, optimizing the performance of the entire coupling under asymmetric loads, improving power transmission efficiency, reducing energy loss, and enhancing the stability and economy of system operation.

[0024] 4. For the coupling device with enhanced stability, a wave-shaped and variable-pitch spring is adopted. When subjected to vibration, the part with a large middle pitch and small stiffness deforms first to absorb energy and buffer, and the parts with small end pitches and large stiffness limit the excessive deformation of the spring. The wave-shaped design increases the surface area of the spring, which is beneficial to heat dissipation, avoiding the influence of temperature rise on the spring performance caused by frequent vibration, achieving a good vibration damping and compensation effect, reducing equipment vibration and noise, improving the working environment, and at the same time protecting the coupling and related components, reducing damage caused by vibration.

[0025] Additional aspects and advantages of the present application will be partially given in the following description, partially will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0027] Figure 1 is a schematic structural diagram of a coupling device with enhanced stability according to the present application;

[0028] Figure 2 is a schematic structural diagram of the installation of the motor shaft according to the present application;

[0029] Figure 3 is a schematic structural diagram of the installation of the hub sleeve according to the present application;

[0030] Figure 4 is a schematic structural diagram of the coupling body according to the present application;

[0031] Figure 5 is a schematic structural diagram of the main and slave side transmission shafts according to the present application.

[0032] Reference numerals: 1, motor shaft; 11, threaded hole on motor shaft; 12, keyway on motor shaft; 13, first connection key; 14, threaded hole on coupling; 15, first keyway on coupling; 2, coupling body; 21, main-side transmission shaft; 211, partition; 212, main-side card slot; 213, installation groove; 214, threaded hole; 215, fixing ring; 216, installation hole; 217, bolt; 218, main-side plum blossom card block; 22, slave-side transmission shaft; 221, limit ring; 222, slave-side card slot; 223, installation post; 224, spring; 225, slave-side plum blossom card block; 23, first bolt; 24, first gasket; 25, second connection key; 26, second keyway on coupling; 27, threaded hole on hub sleeve; 28, installation hole for motor shaft; 3, hub sleeve; 31, keyway on hub sleeve; 32, second gasket; 33, second bolt. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] Please refer to Figures 1 - 5 , the present application provides a new technical solution: a coupling device for enhancing stability, including a coupling body 2. At both ends of the coupling body 2, 21 and 22 are respectively provided. One side of the 21 is arranged inside the coupling body 2, and on the other side surface, a motor shaft mounting hole 28 is provided. A motor shaft 1 is sleeved in the motor shaft mounting hole 28. A plurality of coupling threaded holes 14 are provided on the coupling body 2, and a plurality of motor shaft threaded holes 11 are provided on the motor shaft 1. The plurality of coupling threaded holes 14 penetrate into the motor shaft mounting hole 28 and correspond to the motor shaft threaded holes 11. The coupling threaded holes 14 and the motor shaft threaded holes 11 are fixedly installed through a first bolt 23 for fixedly installing the motor shaft 1 in the motor shaft mounting hole 28;

[0038] One side of the 22 is slidably arranged inside the coupling body 2, and on the other side, a hub sleeve 3 is sleeved. At the other end of the coupling body 2, a hub sleeve threaded hole 27 is provided. On one side of the hub sleeve 3, a second bolt 33 is provided. The second bolt 33 is threadedly connected to the hub sleeve threaded hole 27, and the hub sleeve 3 is installed at the other end of the coupling body 2 through the second bolt 33.

[0039] During use, the motor shaft 1 is inserted into the motor shaft mounting hole 28 of the coupling body 2. At this time, the plurality of coupling threaded holes 14 on the coupling body 2 are accurately aligned with the plurality of motor shaft threaded holes 11 on the motor shaft 1. The first bolt 23 is sequentially passed through the coupling threaded holes 14 and screwed into the motor shaft threaded holes 11. By using the fastening force of the threaded connection, the motor shaft 1 is firmly fixed in the motor shaft mounting hole 28; at the other end of the coupling body 2, the hub sleeve 3 is sleeved on the coupling body 2, and the second bolt 33 is passed through the hub sleeve 3 and threadedly connected to the hub sleeve threaded hole 27 on the coupling body 2, thereby realizing the installation of the hub sleeve 3 on the coupling body 2.

[0040] The connection between the motor shaft and the coupling, and between the coupling and the hub sleeve is realized through multiple groups of corresponding threaded holes and bolts. The connection method is simple, direct, firm and reliable, effectively avoiding the shaking of the motor shaft in the coupling and the detachment of the hub sleeve from the coupling, greatly improving the overall connection stability, being able to adapt to torque transmission under different working conditions, and ensuring the smooth operation of the mechanical transmission system.

[0041] In some embodiments, main - side card slots 212 and slave - side card slots 222 are respectively formed at two ends of the coupling body 2. The main - side transmission shaft 21 is arranged inside the main - side card slot 212, and the slave - side transmission shaft 22 is slidably arranged inside the slave - side card slot 222. Protrusions are arranged inside both the main - side card slot 212 and the slave - side card slot 222. The protrusions are arranged in a circumferential array on the inner sides of the main - side card slot 212 and the slave - side card slot 222. The protrusions inside the main - side transmission shaft 21 are densely arranged in a corrugated shape, and their density is 15 - 20% greater than that inside the slave - side transmission shaft 22. These corrugations are distributed in a continuous wavy shape along the circumferential direction. The shape of each corrugation is similar, and the ratio of the depth to the pitch of the corrugations is strictly controlled between 1:3 and 1:5. During torque transmission, this high - density corrugation design can provide greater frictional force and torque - transmission ability, better adapting to the high - load requirements of the main - drive side. The protrusions inside the slave - side transmission shaft 22 are relatively sparsely arranged in a corrugated shape, in contrast to the main - drive side. Although the corrugation density is lower, it still maintains the same wavy shape and basic structural features as the main - drive side, except that the pitch is increased, enabling the driven side to better adapt to relatively small load changes while ensuring torque transmission, and optimizing the performance of the entire coupling under asymmetric loads.

[0042] In this embodiment, mounting grooves 213 are respectively arranged on one side of the main - side card slot 212 and the slave - side card slot 222 close to the edge of the coupling body 2. A fixing ring 215 is arranged inside the mounting groove 213. The fixing ring 215 is used to install the main - side transmission shaft 21 and the slave - side transmission shaft 22 inside the coupling body 2. Threaded holes 214 are formed on the mounting groove 213, and mounting holes 216 are formed on the fixing ring 215. The mounting holes 216 and the threaded holes 214 correspond to each other. The fixing ring 215 is installed on both sides of the coupling body 2 through bolts 217 passing through the threaded holes 214 and the mounting holes 216, which is convenient for installation and disassembly, facilitating the maintenance and repair of the equipment, and improving the assembly convenience and overall stability of the coupling.

[0043] In some embodiments, a partition 211 is arranged on the inner side of the main - side card slot 212, and a limiting ring 221 is arranged on the inner side of the slave - side card slot 222. An installation post 223 is arranged on the inner side of the partition 211. A spring 224 is sleeved on the installation post 223. The other side of the spring 224 contacts one side of the slave - side transmission shaft 22, and is used to push the slave - side transmission shaft 22 to slide inside the slave - side card slot 222. When vibration occurs, the part with a large pitch and small stiffness in the middle of the spring 224 deforms first to absorb energy and buffer. As the vibration continues, the parts with small pitch and large stiffness at both ends limit the excessive deformation of the spring 224.

[0044] In this embodiment, the spring 224 is arranged in a wave shape, and the pitch is variable. At the two ends of the spring 224, the pitch is small, the stiffness is large, and it can withstand a large initial load; while in the middle part of the spring 224, the pitch gradually increases and the stiffness is small. When subjected to vibration, the part with a large pitch in the middle first undergoes a large deformation, absorbs the vibration energy, and plays a buffering role. As the vibration continues, the parts with small pitches at both ends begin to play a role, limiting the excessive deformation of the spring 224, and ensuring that a stable supporting force can still be provided under large deformation conditions. The wavy shape design also increases the surface area of ​​the spring 224, which is conducive to the dissipation of heat, avoiding the temperature increase caused by frequent vibration from affecting the performance of the spring 224, thereby achieving a better vibration reduction compensation effect.

[0045] In some embodiments, a main side plum blossom block 218 is provided on the side where the main side transmission shaft 21 is installed inside the coupling body 2, and the main side plum blossom block 218 is adapted to the main side slot 212; a slave side plum blossom block 225 is provided on the side where the slave side transmission shaft 22 is installed inside the coupling body 2, and the slave side plum blossom block 225 is adapted to the slave side slot 222.

[0046] In some embodiments, the motor shaft mounting hole 28 is provided with a plurality of coupling first keyways 15 along the opening direction, and a plurality of motor shaft keyways 12 are provided at the connecting end between the motor shaft 1 and the motor shaft mounting hole 28, and the motor shaft keyways 12 match the coupling first keyways 15, and a first connecting key 13 is provided in the motor shaft keyways 12 and the coupling first keyways 15, for enabling the coupling body 2 to be installed on the motor shaft 1 along the motor shaft mounting hole 28. When the motor shaft 1 is inserted into the motor shaft mounting hole 28, ensure that the motor shaft keyway 12 on the motor shaft 1 corresponds one-to-one with the first coupling keyway 15 on the coupling body 2, and then insert the first connecting key 13 into the matching keyway. The key and the keyway fit tightly together, which limits the relative rotation of the motor shaft 1 and the coupling body 2 in the circumferential direction, and assists the motor shaft 1 to be stably installed on the coupling body 2; the cooperation between the keyway and the connecting key further enhances the connection rigidity between the motor shaft and the coupling, and prevents the motor shaft from circumferentially sliding in the coupling, especially when subjected to large torque changes, and can accurately transmit power, ensure the accuracy of mechanical transmission, reduce energy loss, and improve transmission efficiency.

[0047] In some embodiments, the motor shaft threaded hole 11 and the coupling threaded hole 14 are connected by a first bolt 23. A first gasket 24 is provided at the contact portion between the first bolt 23 and the surface of the coupling body 2, and the first gasket 24 is sleeved on the first bolt 23. When the first bolt 23 is screwed into the motor shaft threaded hole 11 and the coupling threaded hole 14 for fastening, the first gasket 24 is sleeved at the contact portion between the first bolt 23 and the surface of the coupling body 2. The first gasket 24 is deformed by the force, filling the tiny gap between the bolt and the surface of the coupling body 2, increasing the friction force, and at the same time dispersing the pressure when the bolt is tightened; the setting of the first gasket 24 effectively prevents the first bolt 23 from loosening, improves the durability and reliability of the connection, avoids connection failure caused by bolt loosening due to long-term vibration or impact, extends the service life of the coupling device, and reduces the equipment maintenance frequency.

[0048] In some embodiments, a plurality of second key grooves 26 of the coupling are formed at one end of the coupling body 2 where it is installed with the hub sleeve 3. A plurality of hub sleeve key grooves 31 are formed at the installation end of the hub sleeve 3 and the coupling body 2. The second key grooves 26 of the coupling match the hub sleeve key grooves 31, and a second connection key 25 is provided in the second key grooves 26 of the coupling and the hub sleeve key grooves 31 for installing the hub sleeve 3 at the other end of the coupling body 2. When installing the hub sleeve 3, align the hub sleeve key grooves 31 on the hub sleeve 3 with the second key grooves 26 of the coupling body 2, insert the second connection key 25 into the matching key grooves, and the key fits tightly with the key grooves, restricting the relative rotation of the hub sleeve 3 and the coupling body 2 in the circumferential direction, ensuring the synchronous rotation of the hub sleeve 3 and the coupling body 2; preventing the hub sleeve from slipping during operation, and improving the reliability of the mechanical transmission system.

[0049] In some embodiments, a second gasket 32 is sleeved on the second bolt 33, and the second gasket 32 is provided at the other end of the second bolt 33 and the hub sleeve 3. When the second bolt 33 is screwed into the hub sleeve threaded hole 27 to fix the hub sleeve 3, the second gasket 32 is sleeved on the second bolt 33 so that it is located at the other end of the second bolt 33 and the hub sleeve 3. The second gasket 32 is pressed tightly by the force, filling the gap, increasing the friction force, and at the same time buffering part of the external force impact on the bolt; the second gasket 32 helps to stabilize the connection of the second bolt 33, prevents it from loosening due to external force factors such as vibration and impact during the operation of the equipment, ensures the firm connection between the hub sleeve 3 and the coupling body 2, and thus maintains the stability of the entire mechanical transmission chain, reducing the probability of failure.

[0050] In some embodiments, the first gasket 24 and the second bolt 33 are made of an elastic material. The first gasket 24 and the second bolt 33 being made of an elastic material, during the operation of the device, when subjected to external forces such as vibration and shock, the elastic first gasket 24 can adaptively undergo elastic deformation, absorb part of the energy, and relieve the impact on the bolt connection; similarly, the second bolt 33 made of an elastic material can buffer the external force by its own structure and maintain the tightened state.

[0051] When an enhanced-stability coupling device is in use, slowly align the motor shaft 1 with the motor shaft mounting hole 28 of the coupling body 2, gently rotate the motor shaft 1 to align the motor shaft keyway 12 on the motor shaft 1 with the first coupling keyway 15 on the coupling body 2, then smoothly insert the first connection key 13 into the aligned motor shaft keyway 12 and the first coupling keyway 15, pass the first bolt 23 through the coupling thread hole 14 of the coupling body 2 and align it with the motor shaft thread hole 11 on the motor shaft 1, and use a wrench to gradually tighten the first bolt 23 in a diagonal order to complete the fixed installation of the motor shaft 1 and the coupling body 2;

[0052] Slip the hub sleeve 3 over the outside of the coupling body 2, slowly rotate the hub sleeve 3 to align the hub sleeve keyway 31 on the hub sleeve 3 with the second coupling keyway 26 on the coupling body 2, insert the second connection key 25 into the aligned second coupling keyway 26 and the hub sleeve keyway 31, pass the second bolt 33 through the hub sleeve 3 and align it with the hub sleeve thread hole 27 of the coupling body 2, and use a wrench to tighten the second bolt 33 in a diagonal order to complete the installation of the hub sleeve 3 and the coupling body 2.

[0053] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A coupling device with enhanced stability, characterized in that: The invention comprises a coupling body, wherein two ends of the coupling body are respectively provided with a main-side transmission shaft and a slave-side transmission shaft, one side of the main-side transmission shaft is arranged inside the coupling body, and a motor shaft mounting hole is provided on the surface of the other side, and a motor shaft is sleeved in the motor shaft mounting hole, a plurality of coupling threaded holes are provided on the coupling body, and a plurality of motor shaft threaded holes are provided on the motor shaft, and a plurality of coupling threaded holes penetrate into the motor shaft mounting hole and correspond to the motor shaft threaded holes, and the coupling threaded holes and the motor shaft threaded holes are fixedly installed by a first bolt, which is used to fix the motor shaft in the motor shaft mounting hole; One side of the slave transmission shaft is slidably arranged in the coupling body, and the other side is sleeved with a hub sleeve. A hub sleeve threaded hole is opened at the other end of the coupling body, and a second bolt is arranged on one side of the hub sleeve. The second bolt is threadedly connected to the hub sleeve threaded hole, and the hub sleeve is installed on the other end of the coupling body through the second bolt.

2. A coupling device for enhancing stability according to claim 1, characterized in that: A master side slot and a slave side slot are respectively provided at both ends of the coupling body, the master side transmission shaft is arranged inside the master side slot, and the slave side transmission shaft is slidingly arranged inside the slave side slot, and both the master side slot and the slave side slot are provided with protrusions, and the protrusions are arranged in a circular array on the inner sides of the master side slot and the slave side slot.

3. A coupling device for enhancing stability according to claim 2, characterized in that: The main side slot and the slave side slot are respectively provided with mounting grooves on one side close to the edge of the coupling body, and a fixing ring is provided inside the mounting groove; a threaded hole is provided on the mounting groove, and a mounting hole is provided on the fixing ring, and the mounting hole and the threaded hole correspond to each other, and the fixing ring is installed on both sides of the coupling body by bolts through the threaded holes and the mounting holes.

4. A coupling device for enhancing stability according to claim 2, characterized in that: A partition is provided on the inner side of the master side slot, a limit ring is provided on the inner side of the slave side slot, a mounting column is provided on the inner side of the partition, a spring is sleeved on the mounting column, and the other side of the spring is in contact with one side of the slave side transmission shaft, so as to push the slave side transmission shaft to slide inside the slave side slot.

5. A coupling device for enhancing stability according to claim 1, characterized in that: A main side plum blossom block is provided on the side where the main side transmission shaft is installed inside the coupling body, and the main side plum blossom block is adapted to the main side slot; a slave side plum blossom block is provided on the side where the slave side transmission shaft is installed inside the coupling body, and the slave side plum blossom block is adapted to the slave side slot.

6. A coupling device for enhancing stability according to claim 1, characterized in that: The motor shaft mounting hole is provided with a plurality of first coupling keyways along the opening direction, the motor shaft and the connecting end of the motor shaft mounting hole are provided with a plurality of motor shaft keyways, the motor shaft keyways match the first coupling keyways, and the motor shaft keyways and the first coupling keyways are provided with a first connecting key for mounting the coupling body on the motor shaft along the motor shaft mounting hole.

7. A coupling device with enhanced stability according to claim 1, characterized in that: The threaded hole of the motor shaft and the threaded hole of the coupling are connected by a first bolt. A first gasket is provided at the contact portion between the first bolt and the surface of the coupling body. The first gasket is sleeved on the first bolt.

8. A coupling device for enhancing stability according to claim 1, characterized in that: The coupling body is provided with a plurality of second keyways at one end where the hub sleeve is installed, and the hub sleeve is provided with a plurality of hub sleeve keyways at the installation end where the hub sleeve is installed with the coupling body. The second keyways of the coupling match the keyways of the hub sleeve, and second connecting keys are provided in the second keyways of the coupling and the keyways of the hub sleeve for installing the hub sleeve on the other end of the coupling body.

9. A coupling device with enhanced stability according to claim 1, characterized in that: The second bolt is sleeved with a second gasket, and the second gasket is arranged on the other end of the second bolt and the wheel hub sleeve.

10. A coupling device with enhanced stability according to claim 7 or 9, characterized in that: The first gasket and the second bolt are made of elastic material.

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