Clamping device for a coupling
Patent Information
- Application Number
- CN202522519920.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-27
AI Technical Summary
The existing coupling installation method relies on manual operation, which leads to unstable installation accuracy, safety hazards, and damage to equipment due to high temperature operation. Furthermore, the existing clamping tools require multiple people to work together, which is costly, has poor positioning accuracy, and is prone to damaging precision parts.
A clamping device for couplings was designed. By connecting the bushing with the flange through the connection hole, and combining the fixing structure of the screw and the locking nut, multi-directional adjustment is achieved by using the clamping arm with a preset arc and the adjusting bolt, ensuring coaxiality, adapting to couplings of different sizes, and simplifying the operation process.
It achieves a stable connection and precise installation of the coupling, reduces labor costs, shortens assembly time, avoids equipment damage, and improves installation accuracy and safety.
Smart Images
Figure CN224927836U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical installation tool technology, specifically relating to a clamping device for a coupling. Background Technology
[0002] In mechanical transmission systems, couplings are indispensable core components. Their main function is to connect the drive shafts of different mechanisms, ensuring synchronous rotation of each shaft to achieve torque transmission. They are widely used in industrial equipment, motor drives, and many other fields. The installation accuracy of the coupling directly determines the operational stability of the entire transmission system. Among these, the coaxiality of the coupling and the shaft is a key control indicator during installation. If the coaxiality does not meet the requirements, it will lead to increased vibration amplitude and abnormally high noise during equipment operation. Long-term operation will also accelerate the wear of the coupling itself and related components such as bearings and seals. In severe cases, it may even cause component breakage, equipment shutdown, and other production accidents. Therefore, extremely high requirements are placed on the coupling installation process.
[0003] Existing coupling installation methods mostly rely on manual alignment and fixing, which is not only inefficient but also susceptible to human error, making it difficult to guarantee stable installation accuracy and prone to misalignment. Especially in the disassembly and assembly of large couplings, the weight of the workpiece and assembly pressure can easily cause misalignment or even detachment, directly threatening the safety of operators and causing equipment damage. In hot-fitting processes, high-temperature workpieces can easily cause burns. Traditional methods using tools such as wire ropes to clamp the workpiece have many significant drawbacks: requiring multiple people to work together, resulting in high labor costs; poor positioning accuracy, easily causing impact damage to precision parts such as shafts, holes, and keys; long operation cycles, with rapid workpiece cooling leading to assembly failure and damage to vulnerable components such as motor seals. Therefore, there is an urgent need for a coupling clamping device. Utility Model Content
[0004] To address some or all of the technical problems existing in the prior art, this utility model provides a clamping device for a coupling. The coupling is provided with a flange, and the flange has connecting holes evenly spaced around its circumference. The clamping device for the coupling includes a bushing disposed in the connecting holes, a screw rod disposed in the bushing, a first locking nut disposed at both ends of the bushing and threadedly connected to the screw rod, a pull rod sleeved on the outer circumference of the screw rod, and a first adjusting bolt threadedly connected to one end of the screw rod, wherein: One end of the pull rod is provided with a first clamping arm sleeved on the outer periphery of the screw, and the other end is provided with a second clamping arm sleeved on the outer periphery of the screw. The inner side of the first clamping arm abuts against the pull rod, and the outer side is provided with a second locking nut threaded to the screw. The inner side of the second clamping arm abuts against the pull rod, and the outer side is provided with a second locking nut threaded to the screw. The ends of the first and second clamping arms away from the screw are both threaded with second adjusting bolts. The first and second clamping arms are both pre-curved. The bottoms of the first and second adjusting bolts abut against the outer periphery of the coupling.
[0005] Furthermore, in the clamping device of the above-mentioned coupling, a first threaded hole is provided at the end of the screw away from the bushing, the axis of the first threaded hole is perpendicular to the screw, and the first adjusting bolt is threaded in the first threaded hole.
[0006] Furthermore, in the clamping device of the above-mentioned coupling, the ends of the first clamping arm and the second clamping arm are provided with second threaded holes, the axis of the second threaded holes is perpendicular to the first clamping arm and the second clamping arm respectively, and the second adjusting bolt is threaded in the second threaded hole.
[0007] Furthermore, in the clamping device of the above-mentioned coupling, a lifting hole is provided at the end of the pull rod away from the screw.
[0008] Furthermore, in the clamping device of the above-mentioned coupling, one end of the pull rod is provided with multiple adjustment holes, and the screw is disposed in the adjustment holes.
[0009] Furthermore, in the clamping device of the above-mentioned coupling, the number of lifting holes is 2 to 4.
[0010] The clamping device for the coupling of this utility model has the following advantages and beneficial effects: This device achieves a stable connection between the device and the coupling by matching the bushing and the flange connection hole, combined with the fixing structure of the screw and the locking nut. The preset arc design of the first and second clamping arms improves the clamping fit. With the multi-directional adjustment function of the first and second adjusting bolts, the horizontal and vertical positions of the coupling can be finely corrected, effectively ensuring the coaxiality of the installation and avoiding damage to the key and shaft. Moreover, this device can be operated by only two people. By adjusting the position of the hole, different sizes of couplings can be selected, shortening the assembly time, reducing labor costs and labor intensity, and avoiding damage to the motor seals caused by repeated heating, thus ensuring the stable operation of the equipment. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is an exploded view of the clamping device for the coupling of this utility model; Figure 2 This is a schematic diagram of the combined clamping device of the coupling of this utility model.
[0012] Explanation of reference numerals in the attached figures: 1. Tie rod; 101. Lifting hole; 102. Adjustment hole; 201. First clamping arm; 202. Second clamping arm; 3. Second adjusting bolt; 4. Screw; 5. First adjusting bolt; 6. Second locking nut; 7. Bushing; 8. First locking nut. Detailed Implementation
[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0014] like Figure 1 , Figure 2As shown, this utility model discloses a clamping device for a coupling. The coupling is provided with a flange (not shown in the figure), and the flange has connection holes evenly distributed around its circumference. The clamping device for the coupling includes a bushing 7 disposed in the connection holes, a screw 4 disposed in the bushing 7, a first locking nut 8 disposed at both ends of the bushing 7 and threaded to the screw 4, a pull rod 1 sleeved on the outer circumference of the screw 4, and a first adjusting bolt 5 threaded to one end of the screw 4. The bushing 7 serves as a transition component between the screw 4 and the flange, preventing the screw 4 from directly contacting the connection holes and causing wear, while also providing a stable support reference for the screw 4. The screw 4 passes through the bushing 7 and is the core load-bearing and transmission component of the device, providing an installation base for the various clamping and adjusting components. Its threaded structure enables the connection and fixation of the locking nut and the adjusting bolt. The first locking nut 8 is symmetrically disposed at both ends of the bushing 7 and threaded to the screw 4, and the bushing 7 and the flange are firmly fixed through bidirectional locking action, eliminating assembly gaps and ensuring the rigid connection between the device and the coupling. Next, one end of the pull rod 1 is provided with a first clamping arm 201 sleeved on the outer periphery of the screw 4, and the other end is provided with a second clamping arm 202 sleeved on the outer periphery of the screw 4. The inner side of the first clamping arm 201 abuts against the pull rod 1, and the outer side is provided with a second locking nut 6 threaded to the screw 4. The inner side of the second clamping arm 202 abuts against the pull rod 1, and the outer side is provided with a second locking nut 6 threaded to the screw 4. The ends of the first clamping arm 201 and the second clamping arm 202 away from the screw 4 are both threaded with a second adjusting bolt 3. Both 201 and the second clamping arm 202 have a preset curvature. The bottoms of the first adjusting bolt 5 and the second adjusting bolt 3 abut against the outer circumference of the coupling. After the coupling is hoisted to the installation position, the coupling can be slightly adjusted in the horizontal direction by rotating the first adjusting bolt 5. The height of the corresponding side can be adjusted by rotating the second adjusting bolts 3 on both sides to achieve vertical fine adjustment. This multi-dimensional adjustment method can accurately correct the coaxiality deviation. During the adjustment process, in conjunction with the action of the hoisting equipment, the coupling and the drive shaft can be fully aligned before assembly can be completed.
[0015] Furthermore, in the clamping device of the coupling of this utility model, the end of the screw 4 away from the bushing 7 is provided with a first threaded hole, the axis of the first threaded hole is perpendicular to the screw 4, and the first adjusting bolt 5 is threaded in the first threaded hole.
[0016] Furthermore, in the clamping device of the coupling of this utility model, the ends of the first clamping arm 201 and the second clamping arm 202 are provided with second threaded holes, the axes of the second threaded holes are perpendicular to the first clamping arm 201 and the second clamping arm 202 respectively, and the second adjusting bolt 3 is threaded in the second threaded hole.
[0017] In one specific embodiment, in the clamping device of the coupling of this utility model, the end of the pull rod 1 away from the screw 4 is provided with a lifting hole 101, which provides a connection point for the lifting equipment and realizes the lifting operation of the coupling.
[0018] In one specific embodiment, in the clamping device of the coupling of this utility model, a plurality of adjustment holes 102 are provided at one end of the pull rod 1, and the screw 4 is disposed in the adjustment hole 102. By selecting different adjustment holes 102, the relative position of the pull rod 1 and the coupling can be changed, thereby adapting to couplings of different sizes.
[0019] In one specific embodiment, the clamping device of the coupling of this utility model has 2 to 4 lifting holes 101, more specifically, the number of lifting holes 101 is 2. Of course, the specific number of lifting holes 101 needs to be set according to the size of the coupling in actual use.
[0020] The working principle of the clamping device for the coupling of this utility model is as follows: The bushing 7 is fitted into the connecting hole. Then, the screw 4 is passed through the bushing 7, and the relative position between the bushing 7 and the flange is fixed using the first locking nut 8. The second clamping arm 202, with the second adjusting bolt 3 installed, is fitted onto the outer circumference of the screw 4. According to the size of the coupling, a suitable adjusting hole 102 is selected and fitted onto the outer circumference of the screw 4. The first clamping arm 201, with the second adjusting bolt 3 installed, is then fitted onto the outer circumference of the screw 4. At this point, the first clamping arm 201 and the second clamping arm 202 are located on both sides of the tie rod 1. The first clamping arm 201 and the second clamping arm 202 are adjusted so that the bottoms of the two second adjusting bolts 3 abut against the outer circumference of the coupling. Then, the relative positions of the first clamping arm 201, the pull rod 1, and the second clamping arm 202 are fixed by the second locking nut 6. Finally, the first adjusting bolt 5 is installed into the first threaded hole, so that the bottom of the first adjusting bolt 5 abuts against the outer circumference of the coupling, thus completing the clamping of the coupling by the device. Then, the device and the coupling are hoisted to the designated position by connecting the hoisting equipment to the hoisting hole 101. The horizontal position of the coupling can be finely adjusted by rotating the first adjusting bolt 5, and the vertical position of the coupling can be finely adjusted by rotating the second adjusting bolt 3. With the cooperation of the hoisting equipment, the coupling is installed in the designated position.
[0021] In summary, compared with the prior art, the clamping device for the coupling of this utility model has the following advantages and beneficial effects: This device achieves a stable connection between the device and the coupling by matching the bushing 7 with the flange connection hole and the fixing structure of the screw 4 and the locking nut. The preset arc design of the first clamping arm 201 and the second clamping arm 202 improves the clamping fit. With the multi-directional adjustment function of the first and second adjusting bolts 3, the horizontal and vertical positions of the coupling can be finely corrected, effectively ensuring the coaxiality of the installation and avoiding damage to the key and shaft. Moreover, this device can be operated by only two people. By adjusting the position of the hole 102, different sizes of couplings can be selected, shortening the assembly time, reducing labor costs and labor intensity, and avoiding damage to the motor seals caused by repeated heating, thus ensuring the stable operation of the equipment.
[0022] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable 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; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A clamping device for a coupling, wherein the coupling is provided with a flange, and the flange is provided with connecting holes evenly spaced around its circumference, characterized in that, The clamping device of the coupling includes a bushing disposed in the connecting hole, a screw rod disposed in the bushing, a first locking nut disposed at both ends of the bushing and threaded to the screw rod, a pull rod sleeved on the outer periphery of the screw rod, and a first adjusting bolt threaded to one end of the screw rod, wherein: One end of the pull rod is provided with a first clamping arm sleeved on the outer periphery of the screw, and the other end is provided with a second clamping arm sleeved on the outer periphery of the screw. The inner side of the first clamping arm abuts against the pull rod, and the outer side is provided with a second locking nut threaded to the screw. The inner side of the second clamping arm abuts against the pull rod, and the outer side is provided with a second locking nut threaded to the screw. The ends of the first and second clamping arms away from the screw are both threaded with second adjusting bolts. The first and second clamping arms are both pre-curved. The bottoms of the first and second adjusting bolts abut against the outer periphery of the coupling.
2. The clamping device for the coupling according to claim 1, characterized in that, The screw has a first threaded hole at the end away from the bushing, the axis of the first threaded hole is perpendicular to the screw, and the first adjusting bolt is threaded into the first threaded hole.
3. The clamping device for the coupling according to claim 1, characterized in that, The first clamping arm and the second clamping arm are provided with second threaded holes at their ends. The axis of the second threaded holes is perpendicular to the first clamping arm and the second clamping arm, respectively. The second adjusting bolt is threaded into the second threaded hole.
4. The clamping device for the coupling according to claim 1, characterized in that, The end of the pull rod away from the screw is provided with a lifting hole.
5. The clamping device for the coupling according to claim 4, characterized in that, The number of lifting holes is 2 to 4.
6. The clamping device for the coupling according to claim 1, characterized in that, The pull rod has multiple adjustment holes at one end, and the screw is disposed in the adjustment holes.