A shaft coupling clamp device
By using an adjustable arc-shaped adjusting head and a pre-tightening spring structure, the problem of poor adaptability of existing coupling shaft clamping devices is solved, enabling stable clamping and precise machining of different shafts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI DUOLIDUO DRIVE SHAFT CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-02
AI Technical Summary
Existing coupling shaft clamping devices are difficult to adapt to shafts of different diameters or shapes, have poor versatility, and the clamping is unstable, which can easily lead to uneven stress on the shaft and surface damage.
It adopts an adjustable arc-shaped adjusting head and a pre-tightening spring structure, combined with a clamping cylinder and a support base, to achieve stable clamping of different shafts.
This improves the versatility and clamping stability of the device, prevents shaft wobbling, and ensures machining accuracy and quality.
Smart Images

Figure CN224310467U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coupling processing technology, and in particular relates to a coupling shaft clamping device. Background Technology
[0002] In the field of mechanical transmission, couplings are key components that connect two shafts and transmit torque. Their installation accuracy and stability directly affect the operating efficiency and service life of the equipment. The shaft clamping device, as a core component in the coupling installation process, must ensure that the shafts remain coaxial under clamping conditions to avoid problems such as vibration, noise, and transmission failure caused by loosening or positioning deviations.
[0003] Currently, existing coupling shaft clamping devices have many shortcomings in practical applications. On the one hand, traditional clamping structures mostly use a single fixing method, which is difficult to adapt to shafts of different diameters or shapes, resulting in poor versatility. On the other hand, some devices lack effective support and adjustment mechanisms during the clamping process, which can easily cause uneven force on the shaft, leading to unstable clamping or damage to the shaft surface, seriously affecting production efficiency and assembly quality. Utility Model Content
[0004] In view of the above problems, the purpose of this utility model is to provide a coupling shaft clamping device, which aims to solve the problem that existing coupling shaft clamping devices are difficult to adapt to shafts of different diameters or shapes.
[0005] The present invention adopts the following technical solution:
[0006] The coupling shaft clamping device includes a machine base, on which a clamping mechanism is provided. The clamping mechanism includes a pair of left and right clamping platforms, and a pair of support seats are also provided on the machine base between the left and right clamping platforms. Each clamping platform is provided with a slide seat, and the bottom surface of each slide seat is formed with a groove. A left clamping seat is slidably provided on the left clamping platform, and a right clamping seat is provided on the right slide seat. The tail of the left clamping platform is located in the left groove, and a fixing rod is provided in the left groove. The tail of the left clamping seat is slidably mounted on the fixing rod. A preload spring is provided on the fixing rod at the tail of the left clamping seat. The left and right clamping seats have a middle opening. The left clamping seat has an adjustable arc-shaped adjusting head in the middle opening. Each clamping platform is provided with a clamping cylinder, and the drive shaft of the clamping cylinder is connected to the slide seat on the same side.
[0007] Furthermore, the right end of the left slide block has a bottom block facing downwards, and the left clamping seat has a top opening corresponding to the bottom block. A pair of guide rods are slidably mounted on the bottom block, and both ends of the guide rods are fixed to corresponding positions on the left clamping seat within the top opening.
[0008] Furthermore, the arc-shaped adjusting head is rotatably installed in the corresponding middle opening, and a pair of locking screws are screwed on both sides of the arc-shaped adjusting head on the left clamping seat, with the ends of the locking screws resisting the arc-shaped adjusting head.
[0009] Furthermore, a limiting post is provided on the back of the left clamping seat.
[0010] The beneficial effects of this utility model are:
[0011] 1. This device can adapt to coupling shafts of different shapes and sizes through an adjustable arc-shaped adjustment head, thus improving the versatility of the device.
[0012] 2. When clamping the shaft, the preload spring provides preload force to ensure clamping effect and prevent the shaft from shaking during processing. Attached Figure Description
[0013] Figure 1 This utility model provides an overall drawing of a coupling shaft clamping device.
[0014] Figure 2 This utility model provides a schematic diagram of the installation of the left clamping seat.
[0015] Figure 3 This utility model provides a schematic diagram of the installation of the arc-shaped adjustment head.
[0016] Figure 4 This utility model provides a schematic diagram of the left clamping seat. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0018] To illustrate the technical solution described in this utility model, specific embodiments are described below.
[0019] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.
[0020] Combination Figure 1-4As shown, the coupling shaft clamping device includes a machine base 1, on which a clamping mechanism is provided. The clamping mechanism includes a pair of left and right clamping platforms, wherein the left clamping platform is marked as 21 and the right clamping platform is marked as 22. A pair of support seats 3 are provided on the machine base 1 between the left and right clamping platforms. Each clamping platform is provided with a slide seat 4, and the bottom surface of each slide seat 4 is formed with a groove 5. A left clamping seat 61 is slidably provided on the left clamping platform 21, and a right clamping seat 62 is provided on the right slide seat 4. The tail of the left clamping platform 21 is located in the left groove 5, and a fixing rod 7 is provided in the left groove 5. The tail of the left clamping seat 61 is slidably mounted on the fixing rod 7. A pre-tensioning spring 8 is provided on the fixing rod 7 at the tail of the left clamping seat 61. The left and right clamping seats have a middle opening 9. The left clamping seat 61 is provided with an adjustable arc-shaped adjusting head 10 in the middle opening 9. Each clamping platform is provided with a clamping cylinder 11, and the drive shaft of the clamping cylinder 11 is connected to the slide seat 4 on the same side.
[0021] Couplings are widely used in mechanical transmissions, their function being to connect two shafts and transmit torque. During the manufacturing process of couplings, this device can be used to precisely clamp the shaft for subsequent machining operations.
[0022] In the diagram, both the left and right clamping seats and the pair of support seats below each have an arc-shaped clamping groove 12. When using this device to clamp the shaft of the coupling, firstly, the specific installation angle of the arc-shaped adjusting head needs to be adjusted according to the size of the shaft to match the surface of the shaft. Then, the coupling shaft to be processed is placed on the two support seats. Immediately afterwards, the two clamping cylinders start working simultaneously. The clamping cylinders drive the slide and clamping seats to move towards the shaft, and the left and right clamping seats gradually approach the shaft until the shaft is clamped. At this time, the arc-shaped adjusting head is in full contact with the surface of the shaft, and the arc-shaped adjusting head extends into the middle opening on the opposite side.
[0023] During the clamping process described above, the left clamping seat will retract a short distance along the length of the fixed rod, compressing the preload spring and providing preload force to ensure the clamping effect. Simultaneously, guided by the fixed rod, the left clamping seat can move stably left and right.
[0024] After the shaft is machined, activate the clamping cylinder to retract its drive shaft. This retracts the corresponding slide and clamping seat, moving them away from the shaft and releasing the clamp. The machined shaft can then be removed from the support.
[0025] In this device, the right end of the left slide block 4 forms a bottom block 13 facing downwards, and the left clamping seat 61 has a top opening 14 corresponding to the bottom block 13. A pair of guide rods 15 are slidably mounted on the bottom block 13, and both ends of the guide rods 15 are fixed on the left clamping seat 61 at corresponding positions within the top opening 14.
[0026] When the shaft is clamped, the left clamping seat moves left and right, and the pair of guide rods slide left and right within the base block accordingly. This ensures smooth relative movement between the left slide and the left clamping seat, improving clamping accuracy.
[0027] like Figure 2 In the middle, the back of the left clamping seat 61 is provided with a limiting post 17 to limit the movement range of the left clamping seat and ensure the safety and stability of the clamping process.
[0028] As a preferred structure, such as Figure 1-3 The arc-shaped adjusting head 10 is rotatably installed in the corresponding middle opening 9. A pair of locking screws 16 are screwed on both sides of the left clamping seat 61, and the ends of the locking screws 16 resist the arc-shaped adjusting head 10.
[0029] In the diagram, the arc-shaped adjusting head is rotatably mounted in the middle opening of the left clamping seat. The installation angle of the arc-shaped adjusting head is adjustable to accommodate shafts of different specifications. When it is necessary to adjust the installation angle of the arc-shaped adjusting head, simply loosen all the locking screws first, then rotate and adjust the installation angle of the arc-shaped adjusting head according to the specifications of the shaft to be processed. After adjustment, tighten all the locking screws.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A coupling shaft clamping device, characterized in that: The coupling shaft clamping device includes a machine base, on which a clamping mechanism is provided. The clamping mechanism includes a pair of left and right clamping platforms, and a pair of support seats are also provided on the machine base between the left and right clamping platforms. Each clamping platform is provided with a slide seat, and the bottom surface of each slide seat is formed with a groove. A left clamping seat is slidably provided on the left clamping platform, and a right clamping seat is provided on the right slide seat. The tail of the left clamping platform is located in the left groove, and a fixing rod is provided in the left groove. The tail of the left clamping seat is slidably mounted on the fixing rod. A preload spring is provided on the fixing rod at the tail of the left clamping seat. The left and right clamping seats have a middle opening. The left clamping seat has an adjustable arc-shaped adjusting head in the middle opening. Each clamping platform is provided with a clamping cylinder, and the drive shaft of the clamping cylinder is connected to the slide seat on the same side.
2. The coupling shaft clamping device as described in claim 1, characterized in that: The right end of the left slide block has a bottom block facing downwards, and the left clamping seat has a top opening corresponding to the bottom block. A pair of guide rods are slidably mounted on the bottom block, and both ends of the guide rods are fixed to corresponding positions on the left clamping seat within the top opening.
3. The coupling shaft clamping device as described in claim 2, characterized in that: The arc-shaped adjusting head is rotatably installed in the corresponding middle opening. A pair of locking screws are screwed on both sides of the arc-shaped adjusting head on the left clamping seat. The ends of the locking screws resist the arc-shaped adjusting head.
4. The coupling shaft clamping device as described in claim 3, characterized in that: The back of the left clamping seat is provided with a limiting post.