A new type of hydraulic cylinder ear ring
By using multi-point threaded connections between the ring body and piston rod, along with a support block structure, the problem of loose hydraulic cylinder lugs was solved, achieving a stable connection, improving strength and accuracy during operation, and enhancing operational safety and comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LISHUI CHENGTENG BEARING CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-12
AI Technical Summary
The existing hydraulic cylinder clevis is prone to loosening, resulting in low strength and accuracy during operation.
It adopts a ring body and piston rod design, and achieves a stable connection by means of multi-point threaded connection and support block structure, combined with protective ring sealing, to prevent loosening.
This technology enables stable installation and long-term fixation of the cylinder lugs, improving the strength and accuracy during operation, as well as enhancing operational safety and comfort.
Smart Images

Figure CN224352193U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder lug technology, and in particular to a novel hydraulic cylinder lug. Background Technology
[0002] Hydraulic cylinders are hydraulic actuators that convert hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). They are simple in structure, reliable in operation, and eliminate the need for speed reduction devices when used to achieve reciprocating motion. Furthermore, they have no transmission backlash and provide smooth movement, making them widely used in the hydraulic systems of various machines. However, most hydraulic cylinders currently use threaded connections for the lugs and piston rods. Over time, the lugs are prone to loosening, reducing stability and compromising strength and accuracy during operation. Utility Model Content
[0003] This invention aims to solve the problems existing in the prior art by providing a new type of hydraulic cylinder lug that is easy to install and operate, provides long-term effective fixation to prevent loosening, and ensures strength and accuracy during operation.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This novel hydraulic cylinder clevis includes a ring body and a piston rod. A sleeve is provided on the side of the ring body, and an inner groove is formed at the bottom of the sleeve. A protrusion is provided at the top of the inner groove, and a first threaded groove is formed at the bottom of the protrusion. A threaded post is provided at the end of the piston rod, and the threaded post is threadedly connected to the first threaded groove. The piston rod reaches the interior of the inner groove. A first mounting hole is formed on the side of the sleeve, and a second threaded groove is formed on the side surface of the threaded post. A first bolt is provided inside the first mounting hole, and the first bolt is threadedly connected to the second threaded groove. There are multiple second threaded grooves and multiple first bolts. Multiple first mounting holes are distributed on the left and right sides of the sleeve body. Multiple second threaded grooves are distributed on the left and right sides of the threaded column. A support block is provided on the surface of the piston rod. The support block has an internal hole. The support block is located below the sleeve body. A second mounting hole is provided on the side of the support block. A third threaded groove is provided on the side surface of the threaded column. A second bolt is provided inside the second mounting hole. The second bolt is threadedly connected to the third threaded groove. There are two second mounting holes, two third threaded grooves, and two second bolts. A third mounting hole is provided at the bottom of the support block. A third mounting hole is provided at the bottom of the sleeve body. The ring has four threaded grooves. A third bolt is installed inside the third mounting hole. The third bolt is threaded to the fourth threaded groove. There are multiple third mounting holes, multiple fourth threaded grooves, and multiple third bolts. The support block and the piston rod are sleeved together. The second mounting holes and the third threaded grooves correspond to each other. After passing the second bolt through the second mounting hole, the third threaded groove is threaded. The other second bolt is connected in the same way. Tightening the two second bolts completes the installation and fixation of the support block. The sleeve is placed on top of the piston rod. The threaded post is threaded to the first threaded groove. The sleeve reaches the top of the support block. Multiple first mounting holes correspond to multiple second threaded grooves. One first bolt passes through the first mounting hole and is threaded to the second threaded groove. This process is repeated to connect multiple first bolts. Tightening all first bolts installs and fixes the ring and sleeve as a whole. Multiple third bolts are then obtained. After passing through the third mounting hole, the third bolt is threaded to the fourth threaded groove. Tightening all third bolts further fixes the ring and sleeve as a whole. The cylinder clevis is easy to install and operate, providing long-term effective fixation to prevent loosening and ensuring strength and accuracy during operation.
[0005] To further improve the design, the second mounting hole and the first mounting hole have the same dimensions, the third thread groove and the second thread groove have the same dimensions, the second bolt and the first bolt have the same dimensions, and the second bolt and the first bolt have a high degree of interchangeability, making them easy to replace each other.
[0006] Further improvements include placing the protrusion at the center of the sleeve, with the protrusion, first threaded groove, inner groove, piston rod, and threaded post on the same vertical center line, and the piston rod and threaded post at the center of the sleeve, thus concentrating their effects and improving stability.
[0007] Further improvements include a protective ring fitted onto the surface of the threaded column, with the piston rod abutting against the protective ring. The protective ring is made of silicone or rubber and effectively seals the inside of the first threaded groove, preventing the entry of impurities, moisture, and air, thus effectively protecting the threaded column inside the first threaded groove.
[0008] Further improvements include the support block having the same length as the sleeve, the sleeve having a first rounded corner on its side, the ring having a first rounded corner on its side, and the support block having a second rounded corner on its bottom, as well as on the top and bottom of the support block. The first and second rounded corners reduce sharp edges and corners, improve overall smoothness, and enhance safety and comfort during operation.
[0009] To further improve the design, the top of the threaded column is provided with a first chamfer, and the top of the piston rod is provided with a second chamfer. The first and second chamfers reduce obstruction and facilitate quick connection between the threaded column and the piston rod, saving time.
[0010] To further improve the design, a third chamfer is provided at the bottom of the inner groove, and a fourth chamfer is provided on the side of the inner hole. The third and fourth chamfers provide further convenience, reduce obstruction and alignment operations, save time and manpower, and improve efficiency.
[0011] The beneficial effects of this utility model are:
[0012] The support block and piston rod are interlocked. The second mounting hole and the third threaded groove correspond to each other. After the second bolt passes through the second mounting hole, it is threaded into the third threaded groove. The other second bolt is connected in the same way. Tighten the two second bolts to install and fix the support block. The sleeve is set on the top of the piston rod. The threaded post is threaded into the first threaded groove. The sleeve reaches the top of the support block. At the same time, multiple first mounting holes correspond to multiple second threaded grooves. One of the first bolts passes through the first mounting hole and is threaded into the second threaded groove. Refer to this operation to complete the connection of multiple first bolts. Tighten all the first bolts. The ring and sleeve are installed and fixed as a whole. Obtain multiple third bolts. After the multiple third bolts pass through the third mounting hole, they are threaded into the fourth threaded groove. Tighten all the third bolts. The ring and sleeve are further fixed as a whole. The cylinder clevis is easy to install and operate. It is effectively fixed for a long time to prevent loosening and ensures strength and accuracy during operation.
[0013] The protective ring effectively seals the inside of the first threaded groove, preventing the entry of impurities, moisture, and air. The threaded column is effectively protected inside the first threaded groove. The setting of the first and second fillets reduces the sharp edges of the structure, improves the overall smoothness, and enhances the safety and comfort during operation.
[0014] The first and second chamfers reduce obstruction, facilitating quick connection of the threaded column and piston rod, saving time. The third and fourth chamfers further enhance convenience, reducing obstruction and alignment operations, saving time and manpower, and improving efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is an exploded view of the structure of this utility model;
[0017] Figure 3 This is a view of the bottom of the sleeve of this utility model;
[0018] Figure 4 This is a view of the top of the piston rod of this utility model;
[0019] Figure 5 This is a diagram illustrating the support block structure of this utility model;
[0020] Figure 6 This is a view of the bottom of the support block of this utility model.
[0021] Explanation of reference numerals in the attached drawings: 1. Ring body; 2. Piston rod; 3. Sleeve body; 4. Inner groove; 5. Protrusion; 6. First threaded groove; 7. Threaded post; 8. First mounting hole; 9. Second threaded groove; 10. First bolt; 11. Support block; 12. Inner hole; 13. Second mounting hole; 14. Third threaded groove; 15. Second bolt; 16. Third mounting hole; 17. Fourth threaded groove; 18. Third bolt; 19. Protective ring; 20. First fillet; 21. Second fillet; 22. First chamfer; 23. Second chamfer; 24. Third chamfer; 25. Fourth chamfer. Detailed Implementation
[0022] The following is in conjunction with the appendix Figure 1-6 Further explanation of this embodiment:
[0023] like Figure 1-6As shown: This embodiment discloses a novel hydraulic cylinder clevis, comprising a ring body 1 and a piston rod 2. A sleeve 3 is provided on the side of the ring body 1. An inner groove 4 is formed at the bottom of the sleeve 3, a protrusion 5 is provided at the top of the inner groove 4, and a first threaded groove 6 is formed at the bottom of the protrusion 5. A threaded post 7 is provided at the end of the piston rod 2, and the threaded post 7 is threadedly connected to the first threaded groove 6, allowing the piston rod 2 to reach the interior of the inner groove 4. A first mounting hole 8 is formed on the side of the sleeve 3, and a second threaded groove 9 is formed on the side surface of the threaded post 7. A first bolt 10 is provided inside the first mounting hole 8, and the first bolt 10 is threadedly connected to the second threaded groove 9. There are multiple first mounting holes 8, second threaded grooves 9, and first bolts 10. Multiple first mounting holes 8 are distributed on the left and right sides of the sleeve 3, and multiple second threaded grooves 9 are distributed on the left and right sides of the threaded post 7. A support block 11 is provided on the surface of the piston rod 2, and an inner hole 12 is formed inside the support block 11. The support block 11 is located below the sleeve 3, and its side... A second mounting hole 13 is provided on the side, and a third threaded groove 14 is provided on the side surface of the threaded column 7. A second bolt 15 is provided inside the second mounting hole 13 and is threadedly connected to the third threaded groove 14. There are two of each of the second mounting hole 13, the third threaded groove 14, and the second bolt 15. A third mounting hole 16 is provided at the bottom of the support block 11, and a fourth threaded groove 17 is provided at the bottom of the sleeve 3. A third bolt 18 is provided inside the third mounting hole 16 and is threadedly connected to the fourth threaded groove 17. There are multiple of each of the third mounting hole 16, the fourth threaded groove 17, and the third bolt 18. The second mounting hole 13 and the first mounting hole 8 have the same size and specifications. The third threaded groove 14 and the second threaded groove 9 have the same size and specifications. The second bolt 15 and the first bolt 10 have the same size and specifications. The protrusion 5 is located at the center of the inside of the sleeve 3. The protrusion 5, the first threaded groove 6, the inner groove 4, the piston rod 2, and the threaded column 7 are on the same vertical center line.
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown: A protective ring 19 is fitted onto the surface of the threaded column 7, and the piston rod 2 abuts against the protective ring 19. The protective ring 19 is made of silicone or rubber. The length of the support block 11 is the same as the width of the sleeve 3. The side of the sleeve 3 is provided with a first rounded corner 20. The side of the ring 1 and the side of the support block 11 are also provided with a first rounded corner 20. The bottom of the sleeve 3 is provided with a second rounded corner 21. The top and bottom of the support block 11 are also provided with a second rounded corner 21.
[0025] like Figure 3-6 As shown: the top of the threaded column 7 is provided with a first chamfer 22, the top of the piston rod 2 is provided with a second chamfer 23, the bottom of the inner groove 4 is provided with a third chamfer 24, and the side of the inner hole 12 is provided with a fourth chamfer 25.
[0026] In use, the support block 11 and piston rod 2 are sleeved together. The second mounting hole 13 corresponds to the third threaded groove 14. After the second bolt 15 is passed through the second mounting hole 13, it is threaded into the third threaded groove 14. The other second bolt 15 is connected in the same way. Tightening the two second bolts 15 realizes the installation and fixation of the support block 11. The protective ring 19 is sleeved with the threaded post 7. The sleeve 3 is set on the top of the piston rod 2. The threaded post 7 is threaded into the first threaded groove 6. The first chamfer 22 and the second chamfer 23 reduce obstruction and facilitate quick connection between the threaded post 7 and the piston rod 2, saving time. The sleeve 3 reaches the top of the support block 11, and the piston rod 2 abuts against the protective ring 19. At the same time, multiple first mounting holes 8 correspond to multiple second threaded grooves 9. One of the first bolts After passing through the first mounting hole 8, bolt 10 is threaded into the second threaded groove 9. This process is repeated to connect multiple first bolts 10. Tightening all first bolts 10 installs and secures the ring body 1 and sleeve body 3 as a whole. The second bolt 15 and the first bolt 10 are highly interchangeable and easy to use. Multiple third bolts 18 are then obtained. Passing through the third mounting hole 16, multiple third bolts 18 are threaded into the fourth threaded groove 17. Tightening all third bolts 18 further secures the ring body 1 and sleeve body 3 as a whole. The first fillet 20 and the second fillet 21 reduce sharp edges and corners, improving overall smoothness and enhancing safety and comfort during operation. The cylinder lugs are easy to install and operate, providing long-term effective fixation to prevent loosening and ensuring strength and accuracy during operation.
[0027] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.
Claims
1. A novel hydraulic cylinder clevis, comprising a ring body (1) and a piston rod (2), characterized in that: The ring (1) has a sleeve (3) on its side. The bottom of the sleeve (3) has an inner groove (4). The top of the inner groove (4) has a protrusion (5). The bottom of the protrusion (5) has a first threaded groove (6). The end of the piston rod (2) has a threaded post (7). The threaded post (7) is threaded to the first threaded groove (6). The piston rod (2) reaches the inside of the inner groove (4). The side of the sleeve (3) has a first mounting hole (8). The side surface of the threaded post (7) has a second threaded groove (9). The first mounting hole (8) has a first bolt (10). The first bolt (10) is threaded to the second threaded groove (9). There are multiple first mounting holes (8), second threaded grooves (9) and first bolts (10). Multiple first mounting holes (8) are distributed on the left and right sides of the sleeve (3). Multiple second threaded grooves (9) are distributed on the left and right sides of the threaded post (7). The piston rod ( 2) A support block (11) is provided on the surface. An inner hole (12) is provided inside the support block (11). The support block (11) is below the sleeve (3). A second mounting hole (13) is provided on the side of the support block (11). A third thread groove (14) is provided on the side surface of the threaded column (7). A second bolt (15) is provided inside the second mounting hole (13). The second bolt (15) is threadedly connected to the third thread groove (14). There are two of each of the second mounting hole (13), the third thread groove (14) and the second bolt (15). A third mounting hole (16) is provided at the bottom of the support block (11). A fourth thread groove (17) is provided at the bottom of the sleeve (3). A third bolt (18) is provided inside the third mounting hole (16). The third bolt (18) is threadedly connected to the fourth thread groove (17). There are multiple of each of the third mounting hole (16), the fourth thread groove (17) and the third bolt (18).
2. The novel hydraulic cylinder clevis according to claim 1, characterized in that: The second mounting hole (13) and the first mounting hole (8) have the same size specifications, the third thread groove (14) and the second thread groove (9) have the same size specifications, and the second bolt (15) and the first bolt (10) have the same size specifications.
3. The novel hydraulic cylinder clevis according to claim 1, characterized in that: The protrusion (5) is located at the center of the sleeve (3), and the protrusion (5), the first threaded groove (6), the inner groove (4), the piston rod (2) and the threaded column (7) are on the same vertical center line.
4. The novel hydraulic cylinder clevis according to claim 1, characterized in that: The threaded post (7) is fitted with a protective ring (19), and the piston rod (2) abuts against the protective ring (19). The protective ring (19) is made of silicone or rubber.
5. A novel hydraulic cylinder clevis according to claim 1, characterized in that: The length of the support block (11) is the same as the width of the sleeve (3). The sleeve (3) has a first rounded corner (20) on its side, and the ring (1) and the support block (11) also have a first rounded corner (20) on their sides. The bottom of the sleeve (3) has a second rounded corner (21), and the top and bottom of the support block (11) also have a second rounded corner (21).
6. A novel hydraulic cylinder clevis according to claim 1, characterized in that: The top of the threaded column (7) is provided with a first chamfer (22), and the top of the piston rod (2) is provided with a second chamfer (23).
7. A novel hydraulic cylinder clevis according to claim 1, characterized in that: The bottom of the inner groove (4) is provided with a third chamfer (24), and the side of the inner hole (12) is provided with a fourth chamfer (25).