An adjustable clamping device for a cylinder
By introducing a storage groove and sponge block structure into the cylinder clamping device, the problem of increased friction caused by insufficient lubrication is solved, achieving a more stable and precise clamping effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI TONGFU MASCH EQUIP CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-07
AI Technical Summary
In the absence of effective lubrication, the dry friction between metals in existing cylinder clamping devices is aggravated, which leads to increased extension and retraction resistance of the linkage mechanism and sluggish movement, affecting the stability and accuracy of clamping.
The device incorporates a storage tank and a sponge block structure. Lubricant is then allowed to penetrate the surface of the sponge block through the oil outlet, adsorbing onto the bearing surface to enhance lubrication performance, reduce friction, and extend the service life of components.
It effectively improves the lubrication performance of the clamping device, extends the service life of components, and enhances the stability and accuracy of clamping.
Smart Images
Figure CN224464528U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine manufacturing technology, and more specifically, to an adjustable clamping device for cylinder blocks. Background Technology
[0002] In machining, automobile manufacturing, and repair, clamping and fixing cylinder blocks is a common operation. Existing cylinder block clamping devices typically use a linkage structure to achieve adaptability to clamp cylinder blocks of different lengths. Through mechanical linkage, the jaws can extend and retract within a certain range to meet the clamping requirements of various cylinder sizes. Some devices use articulated linkages to transmit power, driving the jaws on both sides to open and close synchronously, thereby clamping the outer wall of the cylinder. This type of design has solved the clamping problem of multi-size cylinders to a certain extent, but significant technical defects have been exposed during long-term use.
[0003] The clamping action of the existing device relies on the relative movement of the central shaft and the bearing to achieve the extension and retraction of the linkage mechanism. However, with the extension of the service time, the friction between the central shaft and the bearing is caused by continuous force and high frequency of movement, and the surface material gradually wears down, resulting in an increase in the fit clearance and a significant increase in friction. Especially in the absence of effective lubrication, the dry friction phenomenon between metals is aggravated, which not only increases the extension and retraction resistance of the linkage mechanism and makes the action sluggish, but also causes jamming or vibration, seriously affecting the stability and accuracy of clamping. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an adjustable clamping device for cylinders to solve the problem that in the absence of effective lubrication in the prior art, the dry friction between metals is aggravated, which not only increases the extension and retraction resistance of the linkage mechanism and causes sluggish action, but also causes jamming or vibration, seriously affecting the stability and accuracy of clamping.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an adjustable clamping device for a cylinder body, including a clamping device body, a cylinder, a connecting rod and a clamping arm, a connecting plate is installed between the connecting rods on the left and right sides, a bearing is installed on the inner wall of the connecting plate, a central shaft is installed on the inner ring wall of the bearing, a storage groove is opened inside the central shaft, oil outlet holes are opened on both the front and rear sides of the bottom of the storage groove, a sponge block is installed on the lower outer side of the central shaft, and an input hole is opened on the front side of the storage groove.
[0006] The central shaft has movable grooves on both the front and rear sides inside. A movable plate is slidably connected to the inner wall of the movable groove. An elastic element is installed on one side of the movable plate and a rubber plug is installed on the other side. A knob is inserted into the lower right side of the central shaft. Pull ropes are installed on both the front and rear sides of the left side of the knob.
[0007] The elastic elements on both the front and rear sides are installed on the inner wall of the moving groove at their closest points, and the rubber plugs on both the front and rear sides are inserted through the moving groove at their furthest points and plugged into the inner wall of the oil outlet.
[0008] The pull ropes on both the front and rear sides pass through the moving groove at opposite ends and are installed between the pull ropes and the moving plate. The pull ropes are installed at the lower part of the central shaft.
[0009] The input hole has a snap-fit groove on its inner wall, a plug is inserted into the inner wall of the input hole, and a rubber ring is installed on the outer side of the plug.
[0010] The rubber ring is inserted into the inner wall of the snap-fit groove and is subjected to compression deformation by the push of the plug cover.
[0011] The central shaft is installed between the middle of the clamping device body and the top of the sponge block is attached to the bottom of the oil outlet hole, and the bottom is attached to the top surface of the bearing.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] In the above scheme, the lubricant penetrates from the storage tank through the oil outlet to the surface of the sponge block and is absorbed. When the bearing rotates, the absorbed lubricant can effectively enhance the lubrication performance between the connecting plate and the central shaft, thereby extending the service life of the components and improving the overall efficiency of the clamping device. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the linkage structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the clamping arm structure of this utility model;
[0017] Figure 4 This is a front view of the central axis of this utility model;
[0018] Figure 5 for Figure 4 Cross-sectional view of the structure at point AA;
[0019] Figure 6 for Figure 5 Enlarged view of the structure at point B in the middle;
[0020] Figure 7 This is a schematic diagram of the input hole structure of this utility model;
[0021] Figure 8 This is a schematic diagram of the knob structure of this utility model.
[0022] [Figure Labels]
[0023] 1. Clamping device body; 2. Cylinder; 3. Connecting rod; 4. Clamping arm; 5. Central shaft; 6. Connecting plate; 7. Storage tank; 8. Bearing; 9. Sponge block; 10. Moving slot; 11. Elastic element; 12. Pull rope; 13. Moving plate; 14. Oil outlet; 15. Rubber plug; 16. Snap-fit groove; 17. Input hole; 18. Insertion cover; 19. Rubber ring; 20. Knob. Detailed Implementation
[0024] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.
[0025] Example 1: Please refer to Figures 1 to 8 This utility model provides a technical solution: an adjustable clamping device for cylinders, including a clamping device body 1, a cylinder 2, a connecting rod 3, and clamping arms 4. The cylinder 2 pushes the clamping arms 4 on both sides to clamp the cylinder, and it is adaptable to cylinders of different lengths, thereby improving the performance of the clamping device body 1. A connecting plate 6 is installed between the connecting rods 3 on the left and right sides. A bearing 8 is installed on the inner wall of the connecting plate 6. A central shaft 5 is installed on the inner ring wall of the bearing 8. A storage groove 7 is opened inside the central shaft 5. Oil outlet holes 14 are opened on both the front and rear sides of the bottom of the storage groove 7. A sponge block 9 is installed on the lower outer side of the central shaft 5. An input hole 17 is opened on the front side of the storage groove 7. The central shaft 5 is installed between the middle of the clamping device body 1 and the middle of the central shaft 5. The top of the sponge block 9 is attached to the bottom of the oil outlet hole 14 and the bottom is attached to the top surface of the bearing 8, so that the lubricant absorbed by the sponge block is evenly applied to the surface of the bearing 8 to increase the lubrication between the central shaft 5 and the connecting plate 6.
[0026] First, the lubricant inside the storage tank 7 is guided to the surface of the sponge block 9 through the oil outlet 14 and absorbed by it. After that, the cylinder 2 can be started to drive the connecting rods 3 on both sides and drive the clamping arm 4 to clamp the cylinder body. The lubricant is evenly applied to the outside of the bearing 8 through the sponge block 9, thereby increasing the lubrication between the central shaft 5 and the connecting plate 6, and thus improving the performance of the clamping device body 1.
[0027] Example 2: Based on Example 1, in order to control the opening and closing of the oil outlet 14, movable grooves 10 are provided on both the front and rear sides of the interior of the central shaft 5. A movable plate 13 is slidably connected to the inner wall of the movable groove 10. An elastic element 11 is installed on one side of the movable plate 13, and a rubber plug 15 is installed on the other side. A knob 20 is inserted into the lower right side of the central shaft 5. Pull ropes 12 are installed on both the front and rear sides of the left side of the knob 20. The near ends of the elastic elements 11 on both the front and rear sides are installed on the inner wall of the movable groove 10, and the rubber plugs 15 on both the front and rear sides... One end of each of the two rubber plugs 12 passes through the moving groove 10 and is inserted into the inner wall of the oil outlet 14. When the rubber plugs 15 on both sides are driven to move towards each other, the restriction on the oil outlet 14 can be released, thereby guiding the lubricant to the surface of the sponge block 9 and being absorbed by it. Conversely, the oil outlet 14 can be blocked. One end of each of the two pull ropes 12 on both sides passes through the moving groove 10 and is installed between the pull ropes 13 and the moving plate 13. The pull ropes 12 are installed at the lower part of the central shaft 5, so that by rotating the knob 20, the pull ropes 12 can drive the two rubber plugs 15 to move.
[0028] First, turn the knob 20 to drive the two pull ropes 12 to wrap around its outer side, thereby driving the front and rear moving plates 13 to slide towards each other along the inner wall of the moving groove 10. While driving the rubber plug 15 to disengage from the inner wall of the oil outlet 14, the elastic element 11 is squeezed, so that it is compressed in the inner wall of the moving groove 10. Then, the lubricant inside the storage tank 7 is guided to the surface of the sponge block 9 through the oil outlet 14 and is absorbed by it. After completion, release the knob 20, and use the elastic force of the elastic element 11 to push the moving plate 13 to reset, and drive the rubber plug 15 to continue to be inserted between the oil outlet 14 to block it.
[0029] Example 3: Based on Example 2, in order to inject lubricant into the storage tank 7, a snap-fit groove 16 is provided on the inner wall of the input hole 17, and a plug 18 is inserted into the inner wall of the input hole 17. A rubber ring 19 is installed on the outer side of the plug 18. The rubber ring 19 is inserted into the inner wall of the snap-fit groove 16 and is squeezed and deformed by the plug 18, thereby increasing the friction between the plug 18 and the input hole 17 to increase the stability of its installation.
[0030] First, pull the plug cover 18 forward to disengage it from the input hole 17, which will simultaneously disengage the rubber ring 19 from the snap-fit groove 16. At this point, lubricant can be injected into the inner wall of the storage tank 7 through the input hole 17. After that, reset the plug cover 18. At this point, the rubber ring 19 is pushed by the plug cover 18 and is in a state of compression deformation when it is reset to the inner wall of the snap-fit groove 16, thereby increasing the friction between the plug cover 18 and the input hole 17 and improving its installation stability.
[0031] The working process of this utility model is as follows:
[0032] In use, first turn the knob 20 to drive the two pull ropes 12 to wrap around its outer side, thereby driving the front and rear moving plates 13 to slide towards each other along the inner wall of the moving groove 10. While driving the rubber plug 15 to disengage from the inner wall of the oil outlet 14, the elastic element 11 is squeezed, so that it is compressed in the inner wall of the moving groove 10. Then, the lubricant inside the storage tank 7 is guided to the surface of the sponge block 9 through the oil outlet 14 and is absorbed by it. After that, release the knob 20, and use the elastic force of the elastic element 11 to push the moving plate 13 to reset, and drive the rubber plug 15 to continue to be inserted between the oil outlet 14 to block it. At this time, the cylinder 2 can be started, driving the connecting rods 3 on both sides and driving the clamping arm 4 to clamp the cylinder body. The lubricant is evenly applied to the outer side of the bearing 8 through the sponge block 9, thereby increasing the lubrication between the central shaft 5 and the connecting plate 6, and thus improving the use effect of the clamping device body 1.
[0033] When it is necessary to inject lubricant into the storage tank 7, first pull the plug 18 forward to disengage it from the input hole 17, and at the same time, drive the rubber ring 19 to disengage from the snap-fit groove 16. At this time, lubricant can be injected into the inner wall of the storage tank 7 through the input hole 17. After completion, reset the plug 18. At this time, the rubber ring 19 is squeezed and pushed by the plug 18. When it is reset to the inner wall of the snap-fit groove 16, it is in a state of compression deformation, which increases the friction between the plug 18 and the input hole 17 and improves its installation stability.
[0034] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0035] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0036] Finally: 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, improvements, etc., 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. An adjustable clamping device for a cylinder body, characterized in that, The device includes a clamping device body (1), a cylinder (2), a connecting rod (3) and a clamping arm (4). A connecting plate (6) is installed between the connecting rods (3) on the left and right sides. A bearing (8) is installed on the inner wall of the connecting plate (6). A central shaft (5) is installed on the inner ring wall of the bearing (8). A storage groove (7) is opened inside the central shaft (5). Oil outlet holes (14) are opened on both the front and rear sides of the bottom of the storage groove (7). A sponge block (9) is installed on the lower outer side of the central shaft (5). An input hole (17) is opened on the front side of the storage groove (7).
2. The adjustable clamping device for a cylinder body according to claim 1, characterized in that, The central shaft (5) has movable grooves (10) on both the front and rear sides inside. A movable plate (13) is slidably connected to the inner wall of the movable groove (10). An elastic element (11) is installed on one side of the movable plate (13), and a rubber plug (15) is installed on the other side. A knob (20) is inserted into the lower right side of the central shaft (5). Pull ropes (12) are installed on both the front and rear sides of the left side of the knob (20).
3. The adjustable clamping device for a cylinder body according to claim 2, characterized in that, The near ends of the elastic elements (11) on the front and rear sides are installed on the inner wall of the moving groove (10), and the far ends of the rubber plugs (15) on the front and rear sides pass through the moving groove (10) and are inserted into the inner wall of the oil outlet (14).
4. The adjustable clamping device for a cylinder body according to claim 2, characterized in that, The pull ropes (12) on both the front and rear sides pass through the moving groove (10) at opposite ends and are installed between the pull ropes (13) and the moving plate (13). The pull ropes (12) are installed at the lower part of the central shaft (5).
5. The adjustable clamping device for a cylinder body according to claim 1, characterized in that, The inner wall of the input hole (17) is provided with a snap-fit groove (16), and a plug cover (18) is inserted into the inner wall of the input hole (17). A rubber ring (19) is installed on the outer side of the plug cover (18).
6. The adjustable clamping device for a cylinder body according to claim 5, characterized in that, The rubber ring (19) is inserted into the inner wall of the snap-fit groove (16) and is squeezed and deformed by the plug (18).
7. The adjustable clamping device for a cylinder body according to claim 1, characterized in that, The central shaft (5) is installed between the middle of the clamping device body (1), the top of the sponge block (9) is attached to the bottom of the oil outlet (14), and the bottom is attached to the top surface of the bearing (8).