Oil cylinder pull rod press fitting tool
By designing a hydraulic cylinder tie rod press-fitting fixture, and using an electric telescopic rod and clamping block structure to stabilize the tie rod, the problems of high difficulty and swaying in hydraulic cylinder tie rod press-fitting were solved, achieving a highly efficient and stable press-fitting effect.
Patent Information
- Application Number
- CN202423119472.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The existing hydraulic cylinder tie rod is difficult and inefficient to press during assembly, and the tie rod cannot be firmly fixed in the cylinder body, making it prone to shaking, which affects the pressing quality and accuracy.
A hydraulic cylinder tie rod press-fit fixture was designed, including a base, a press-fit device, and a limiting device. After aligning the tie rod with the inner wall of the hydraulic cylinder using an electric telescopic rod, a clamping block, and a spring structure, the clamping block is pressed and installed by the electric telescopic rod, ensuring the tie rod is stable and preventing shaking.
It improves pressing efficiency and quality, ensures that the tie rod does not easily shake during the pressing process, and enhances the precision and stability of pressing.
Smart Images
Figure CN223572401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder tie rod press-fitting fixtures, and in particular to a hydraulic cylinder tie rod press-fitting fixture. Background Technology
[0002] Hydraulic cylinder piston rod press fitting is an installation process used in the assembly of hydraulic cylinders to assemble the piston rod into the cylinder body.
[0003] However, during the assembly of existing hydraulic cylinder tie rods, the small clearance between the cylinder body and the tie rod makes press-fitting difficult. Manual press-fitting is time-consuming, labor-intensive, and inefficient. Furthermore, the tie rod cannot be firmly fixed within the cylinder body, resulting in wobbling and causing it to bend, thus affecting the quality and accuracy of the press-fitting. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hydraulic cylinder tie rod press-fitting fixture.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a hydraulic cylinder tie rod press-fitting fixture, including a base, a press-fitting device on the top of the base, a limit device on the top of the base, a bracket, both ends of the bracket being fixedly connected to the top of the base, an electric telescopic rod fixedly connected to one side of the bracket, a groove frame fixedly connected to the output rod of the electric telescopic rod, both ends of the groove frame being respectively connected to both ends of the bracket, a rectangular cavity being formed inside both ends of the groove frame, a first piston rod being connected through one side of the rectangular cavity, a clamping block being fixedly connected to one end of the first piston rod, and one end of the clamping block being slidably connected to the inner wall of the groove frame. A first spring is sleeved and connected to the outer surface of one end of the first piston rod. The two ends of the first spring are fixedly connected to the rectangular cavity and one side of the first piston rod, respectively. A second spring is symmetrically fixedly connected to one side of the groove frame. A second piston rod is fixedly connected to one end of the second spring. A hydraulic rod is symmetrically fixedly connected to the top of the base. One side of the inner wall of the hydraulic rod is connected to one end of the second piston rod. A third spring is sleeved and connected to the outer surface of one end of the second piston rod. The two ends of the third spring are fixedly connected to one side of the inner wall of the second piston rod and the hydraulic rod, respectively. A hose is connected to the outer surface of the bottom of the hydraulic rod. One end of the hose passes through one side of the groove frame and extends into the rectangular cavity.
[0006] The effect achieved by the above components is as follows: By setting up a press-fitting device, when installing the pull rod inside the cylinder, the pull rod can be aligned with the inner wall of the cylinder first, then the cylinder can be placed on the base, and one end of the pull rod can be placed between the two clamping blocks. Then, the electric telescopic rod on the bracket is activated to drive the grooved frame to slide downward on the outer surface of the bracket. The second spring fixed on one side will pull the second piston rod to move downward on the inner wall of the hydraulic rod, squeezing the hydraulic oil inside into the rectangular cavity through the hose. Then, the first piston rod can be pushed to one end, compressing the first spring, and at the same time, driving the clamping blocks to move downward. The grooved bracket slides in opposite directions along its inner wall to clamp and fix the pull rod. Simultaneously, as the grooved bracket moves, it presses the pull rod against the inner wall of the cylinder. When the clamping block clamps and fixes the pull rod, preventing further movement, the second piston rod also stops moving. However, if the grooved bracket and clamping block still need to be pulled downwards, the second spring will be stretched. This ensures that even with the clamping block tightly clamped, the pull rod can continue to be pressed downwards, improving pressing efficiency. It also stabilizes the pull rod, preventing it from shaking or being pressed out of place during pressing, thus improving the quality and precision of the pressing process.
[0007] Preferably, a limiting telescopic rod is symmetrically fixedly connected to one side of the groove frame, one end of the limiting telescopic rod is fixedly connected to one end of the second piston rod, and the outer surface of the limiting telescopic rod is sleeved and connected to the inner wall of the second spring.
[0008] The effect achieved by the above components is that by setting the limiting telescopic rod, the inner wall of the second spring can be supported, making it less prone to damage during use, increasing its service life, and facilitating the pulling of the second piston rod.
[0009] Preferably, a plurality of anti-slip blocks are fixedly connected to one side of the inner wall of the clamping block, and the plurality of anti-slip blocks are arranged at equal intervals.
[0010] The effect achieved by the above components is that by setting anti-slip blocks, the contact friction of the inner wall of the clamping block can be increased, making it more secure when the hydraulic cylinder rod is limited and fixed, and the rod is less likely to shake in the inner wall of the clamping block.
[0011] Preferably, the outer surface of the output rod of the electric telescopic rod is symmetrically and fixedly connected with reinforcing rods, and one side of the reinforcing rod is fixedly connected to one side of the groove frame.
[0012] The effect achieved by the above components is that by setting up reinforcing rods, the connection area between the groove frame and the electric telescopic rod output rod can be increased, making the connection more solid and stable, and less prone to breakage and damage.
[0013] Preferably, limit blocks are fixedly connected to both sides of one end of the clamping block, and limit grooves are formed on both sides of the inner wall of the groove frame, with the limit blocks and limit grooves being slidably connected.
[0014] The effect achieved by the above components is that by setting the limiting block and the limiting groove, one end of the clamping block can be limited on both sides in the inner wall of the groove frame, so that it is not easy to shake when it slides back and forth in the inner wall of the groove frame.
[0015] Preferably, the limiting device includes a limiting ring block, one side of which is fixedly connected to the top side of the base, and the inner wall of the limiting ring block has a first groove, and the inner wall of the first groove has a second groove.
[0016] The effect achieved by the above components is as follows: by setting the limiting device, the limiting ring block, the first groove and the second groove can limit the bottom of the cylinder body of the corresponding size, so that when the tie rod is pressed, the cylinder body is not easy to shake or slide on the top of the base, which facilitates the installation of the tie rod, reduces the possibility of the tie rod being pressed crooked, and improves the quality and accuracy of pressing.
[0017] Preferably, the inner walls of the limiting ring block, the first groove, and the second groove are all fixedly connected with a plurality of protrusions, the protrusions being made of rubber.
[0018] The effect achieved by the above components is that by setting the protrusion, the contact friction between the limiting ring block and the inner walls of the first and second grooves can be increased, making it more secure when limiting the bottom of the oil cylinder and less prone to shaking.
[0019] Preferably, one side of the limiting ring block is provided with an oblique angle.
[0020] The effect achieved by the above components is that by setting an angle, the area at the entrance of the inner wall of the limiting ring block can be increased, making it easier for the hydraulic cylinder to be quickly aligned and engaged.
[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0022] In this invention, by setting up a pressing device, when installing the pull rod inside the cylinder, the pull rod can first be aligned with the inner wall of the cylinder, then the cylinder can be placed on the base, and one end of the pull rod can be placed between two clamping blocks. Then, the electric telescopic rod on the bracket is activated to drive the groove frame to slide downward on the outer surface of the bracket, causing the two clamping blocks to move in opposite directions, clamping and fixing the pull rod. At the same time, as the groove frame moves, it is pressed against the inner wall of the cylinder, improving the pressing efficiency. It can also stabilize the pull rod, preventing it from shaking or being pressed out of shape during the pressing process, thus improving the quality and accuracy of the pressing. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 This is a three-dimensional structural diagram of the base of this utility model;
[0025] Figure 3 for Figure 2 A three-dimensional schematic diagram of a local structure;
[0026] Figure 4 This is a three-dimensional structural diagram of the limiting ring block of this utility model.
[0027] Legend: 1. Base; 2. Pressing device; 3. Limiting device; 21. Bracket; 22. Electric telescopic rod; 23. Groove frame; 24. Rectangular cavity; 25. First piston rod; 26. Clamping block; 27. First spring; 28. Limiting telescopic rod; 29. Second piston rod; 210. Second spring; 211. Hydraulic rod; 212. Third spring; 213. Hoses; 214. Reinforcing rod; 215. Anti-slip block; 216. Limiting block; 217. Limiting groove; 31. Limiting ring block; 32. First groove; 33. Second groove; 34. Protrusion; 35. Angled. Detailed Implementation
[0028] Example 1, as Figure 1-4As shown, a hydraulic cylinder tie rod press-fitting fixture includes a base 1, a press-fitting device 2 and a limit device 3 on the top of the base 1. The press-fitting device 2 includes a bracket 21, both ends of which are fixedly connected to the top of the base 1. An electric telescopic rod 22 is fixedly connected to one side of the bracket 21. The output rod of the electric telescopic rod 22 is fixedly connected to a groove frame 23. Both ends of the groove frame 23 are respectively connected to both ends of the bracket 21. A rectangular cavity 24 is opened inside both ends of the groove frame 23. A first piston rod 25 is connected through one side of the rectangular cavity 24. A clamping block 26 is fixedly connected to one end of the first piston rod 25. One end of the clamping block 26 is slidably connected to the inner wall of the groove frame 23. A first piston rod 25 is sleeved on the outer surface of one end of the first piston rod 25. Spring 27, the two ends of the first spring 27 are fixedly connected to one side of the rectangular cavity 24 and the first piston rod 25 respectively. A second spring 210 is symmetrically fixedly connected to one side of the groove frame 23. A second piston rod 29 is fixedly connected to one end of the second spring 210. A hydraulic rod 211 is symmetrically fixedly connected to the top of the base 1. One side of the inner wall of the hydraulic rod 211 is connected to one end of the second piston rod 29. A third spring 212 is sleeved on the outer surface of one end of the second piston rod 29. The two ends of the third spring 212 are fixedly connected to one side of the inner wall of the second piston rod 29 and the hydraulic rod 211 respectively. A hose 213 is connected to the bottom outer surface of the hydraulic rod 211. One end of the hose 213 passes through one side of the groove frame 23 and extends into the rectangular cavity 24. When installing the pull rod inside the cylinder, first align the pull rod with the inner wall of the cylinder, then place the cylinder on the base 1, and simultaneously place one end of the pull rod between the two clamping blocks 26. Then, activate the electric telescopic rod 22 on the bracket 21 to drive the grooved frame 23 to slide downward on the outer surface of the bracket 21. The second spring 210 fixed on one side will pull the second piston rod 29 to move downward on the inner wall of the hydraulic rod 211, squeezing the hydraulic oil inside into the rectangular cavity 24 through the hose 213. Then, the first piston rod 25 can be pushed to one end, compressing the first spring 27, and simultaneously driving the clamping blocks 26 in the grooved frame 26. The inner wall of the cylinder 3 slides in opposite directions to clamp and fix the pull rod. At the same time, as the groove frame 23 moves, it presses and installs the pull rod against the inner wall of the cylinder. When the clamping block 26 clamps and fixes the pull rod and cannot move, the second piston rod 29 will also stop moving. However, if the groove frame 23 and the clamping block 26 still need to be pulled down, the second spring 210 will be stretched. This ensures that the clamping block 26 can continue to press and install the pull rod downward while clamping, improving the efficiency of pressing and fixing. At the same time, it can stabilize the pull rod and prevent it from shaking or being pressed crooked during the pressing process, thus improving the quality and accuracy of pressing.
[0029] Reference Figure 2 and Figure 3As shown, this embodiment discloses a limiting telescopic rod 28 symmetrically fixedly connected to one side of the groove frame 23. One end of the limiting telescopic rod 28 is fixedly connected to one side of one end of the second piston rod 29, and the outer surface of the limiting telescopic rod 28 is sleeved and connected to the inner wall of the second spring 210. By setting the limiting telescopic rod 28, the inner wall of the second spring 210 can be supported, making it less prone to damage during use, increasing its service life, and facilitating the pulling of the second piston rod 29. A plurality of anti-slip blocks 215 are fixedly connected to one side of the inner wall of the clamping block 26, and the plurality of anti-slip blocks 215 are arranged at equal intervals. By setting the anti-slip blocks 215, the contact friction of the inner wall of the clamping block 26 can be increased, making it more secure when limiting and fixing the hydraulic cylinder rod, and the rod is less likely to shake in the inner wall of the clamping block 26.
[0030] Reference Figure 2 and Figure 3 As shown, this embodiment discloses that a reinforcing rod 214 is symmetrically fixedly connected to the outer surface of the output rod of the electric telescopic rod 22, and one side of the reinforcing rod 214 is fixedly connected to one side of the groove frame 23. By setting the reinforcing rod 214, the connection area between the groove frame 23 and the output rod of the electric telescopic rod 22 can be increased, making the connection more firm and stable, and less prone to breakage or damage. Limiting blocks 216 are fixedly connected to both sides of one end of the clamping block 26, and limiting grooves 217 are opened on both sides of the inner wall of the groove frame 23. The limiting blocks 216 and the limiting grooves 217 are slidably connected. By setting the limiting blocks 216 and the limiting grooves 217, the two sides of one end of the clamping block 26 can be limited in the inner wall of the groove frame 23, making it less prone to shaking when sliding back and forth in the inner wall of the groove frame 23.
[0031] Reference Figure 4 As shown, this embodiment discloses a limiting device 3 including a limiting ring block 31. One side of the limiting ring block 31 is fixedly connected to the top side of the base 1. A first groove 32 is formed on the inner wall of the limiting ring block 31, and a second groove 33 is formed on the inner wall of the first groove 32. The limiting ring block 31, the first groove 32, and the second groove 33 can limit the bottom of the cylinder body of the corresponding size, so that the cylinder body is not prone to shaking or sliding on the top of the base 1 when pressing the tie rod, which facilitates the installation of the tie rod, reduces the possibility of the tie rod being pressed crooked, and improves the quality and accuracy of pressing.
[0032] Reference Figure 4As shown, this embodiment discloses that the inner walls of the limiting ring block 31, the first groove 32, and the second groove 33 are all fixedly connected with a plurality of protrusions 34, which are made of rubber. By setting the protrusions 34, the contact friction between the inner walls of the limiting ring block 31 and the first groove 32 and the second groove 33 can be increased, making it more secure when limiting the bottom of the hydraulic cylinder and less prone to shaking. A chamfer 35 is provided on one side of the limiting ring block 31. By setting the chamfer 35, the area at the entrance of the inner wall of the limiting ring block 31 can be increased, making it easier for the hydraulic cylinder to be quickly aligned and engaged.
[0033] Working principle: When installing the pull rod inside the cylinder, first align the pull rod with the inner wall of the cylinder, then place the cylinder on the base 1, and simultaneously place one end of the pull rod between the two clamping blocks 26. Then, activate the electric telescopic rod 22 on the bracket 21 to drive the grooved frame 23 to slide downward on the outer surface of the bracket 21. The second spring 210 fixed on one side and the limiting telescopic rod 28 will pull the second piston rod 29 to move downward on the inner wall of the hydraulic rod 211, squeezing the hydraulic oil inside into the rectangular cavity 24 through the hose 213. Then, the first piston rod 25 can be pushed to one end, compressing the first spring 27, and simultaneously driving the clamping block 26 and the limiting block 216 to move downward on the inner wall of the cylinder. The inner walls of the groove frame 23 and the limiting groove 217 slide in opposite directions to clamp and fix the pull rod. At the same time, as the groove frame 23 moves, it presses the pull rod against the inner wall of the cylinder. When the clamping block 26 clamps and fixes the pull rod and cannot move, the second piston rod 29 will also stop moving. However, if the groove frame 23 and the clamping block 26 still need to be pulled down, the second spring 210 and the limiting telescopic rod 28 will be pulled apart. This ensures that the clamping block 26 can continue to press and install the pull rod downward while it is clamped, improving the efficiency of pressing and fixing. At the same time, it can stabilize the pull rod and prevent it from shaking or being pressed crooked during the pressing process, thus improving the quality and accuracy of pressing.
[0034] The limiting ring block 31, the first groove 32, and the second groove 33 can limit the bottom of the cylinder body of the corresponding size, so that the cylinder body is not prone to shaking or sliding on the top of the base 1 when pressing the tie rod, which facilitates the installation of the tie rod, reduces the possibility of the tie rod being pressed crooked, and improves the quality and accuracy of pressing.
Claims
1. A hydraulic cylinder tie rod press-fitting fixture, comprising a base (1), characterized in that: A pressing device (2) is provided on the top of the base (1), and a limiting device (3) is provided on the top of the base (1). The pressing device (2) includes a bracket (21). Both ends of the bracket (21) are fixedly connected to the top of the base (1). An electric telescopic rod (22) is fixedly connected to one side of the bracket (21). The output rod of the electric telescopic rod (22) is fixedly connected to a groove frame (23). Both ends of the groove frame (23) are respectively connected to both ends of the bracket (21). A rectangular cavity (24) is opened inside both ends of the groove frame (23). A first piston rod (25) is connected through one side of the rectangular cavity (24). A clamping block (26) is fixedly connected to one end of the first piston rod (25). One end of the clamping block (26) is slidably connected to the inner wall of the groove frame (23). A first spring (27) is sleeved on the outer surface of one end of the first piston rod (25). The two ends of the first spring (27) are fixedly connected to one side of the rectangular cavity (24) and the first piston rod (25), respectively. A second spring (210) is symmetrically fixedly connected to one side of the groove frame (23). A second piston rod (29) is fixedly connected to one end of the second spring (210). A hydraulic rod (211) is symmetrically fixedly connected to the top of the base (1). One side of the inner wall of the hydraulic rod (211) is connected to one end of the second piston rod (29). A third spring (212) is sleeved on the outer surface of one end of the second piston rod (29). The two ends of the third spring (212) are fixedly connected to one side of the inner wall of the second piston rod (29) and the hydraulic rod (211), respectively. A hose (213) is connected through the bottom outer surface of the hydraulic rod (211). One end of the hose (213) passes through one side of the groove frame (23) and extends into the rectangular cavity (24).
2. The hydraulic cylinder tie rod press-fitting fixture according to claim 1, characterized in that: A limiting telescopic rod (28) is symmetrically fixedly connected to one side of the groove frame (23). One end of the limiting telescopic rod (28) is fixedly connected to one side of one end of the second piston rod (29). The outer surface of the limiting telescopic rod (28) is sleeved and connected to the inner wall of the second spring (210).
3. The hydraulic cylinder tie rod press-fitting fixture according to claim 1, characterized in that: A plurality of anti-slip blocks (215) are fixedly connected to one side of the inner wall of the clamping block (26), and the plurality of anti-slip blocks (215) are arranged at equal distances.
4. The hydraulic cylinder tie rod press-fitting fixture according to claim 1, characterized in that: The output rod of the electric telescopic rod (22) is symmetrically fixedly connected with a reinforcing rod (214), and one side of the reinforcing rod (214) is fixedly connected to one side of the groove frame (23).
5. The hydraulic cylinder tie rod press-fitting fixture according to claim 1, characterized in that: Limiting blocks (216) are fixedly connected to both sides of one end of the clamping block (26), and limiting grooves (217) are opened on both sides of the inner wall of the groove frame (23). The limiting block (216) and the limiting groove (217) are slidably connected.
6. The hydraulic cylinder tie rod press-fitting fixture according to claim 1, characterized in that: The limiting device (3) includes a limiting ring block (31), one side of which is fixedly connected to the top side of the base (1). The inner wall of the limiting ring block (31) is provided with a first groove (32), and the inner wall of the first groove (32) is provided with a second groove (33).
7. The hydraulic cylinder tie rod press-fitting fixture according to claim 6, characterized in that: The inner walls of the limiting ring block (31), the first groove (32), and the second groove (33) are all fixedly connected with a number of protrusions (34), and the protrusions (34) are made of rubber.
8. The hydraulic cylinder tie rod press-fitting fixture according to claim 6, characterized in that: The limiting ring block (31) has an oblique angle (35) on one side.