Hydraulic main oil cylinder structure
By designing No. 1 and No. 2 buffer structures in the hydraulic master cylinder, the problem of buffer rings and springs affecting the extension and shortening of the oil rod is solved, and flexible movement and stable buffer protection of the oil rod are achieved.
Patent Information
- Application Number
- CN202423073926.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-12
AI Technical Summary
During the buffer protection process of the existing hydraulic cylinder, the buffer ring, buffer gasket and spring will affect the extension and shortening of the oil rod, resulting in inflexible movement.
A hydraulic master cylinder structure is designed, which adopts No. 1 and No. 2 buffer structures, which are connected to the buffer structures through the oil inlet and oil return ports respectively. The oil rod assembly is protected by different buffer structures during the extension and shortening processes to avoid collision with the cylinder end.
It realizes buffer protection during the extension and shortening of the oil rod, avoids collision with the end of the cylinder body, and at the same time maintains the flexible movement of the oil rod, improving the stability and sealing of the movement.
Smart Images
Figure CN223374784U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic master oil cylinder structure. Background Art
[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines.
[0003] In the prior art, patent document CN211852377U discloses a hydraulic oil cylinder with a buffer protection function, comprising a cylinder barrel, a cylinder bottom fixedly mounted on the right side of the cylinder barrel, an outlet hole formed on the upper surface of the cylinder bottom, a guide sleeve fixedly connected to the left side of the cylinder barrel, an inlet hole formed on the upper surface of the guide sleeve, a piston rod movably mounted on the left end of the guide sleeve, a buffer ring fixedly mounted on the right end of the guide sleeve, a cylinder head fixedly mounted on the left end of the piston rod, and a piston body fixedly mounted on the right end of the piston rod. The hydraulic oil cylinder with a buffer protection function, by providing a first spring and a second spring, can effectively buffer the working piece and the piston body when the system is working forward through the elastic deformation and storage of elastic energy of the springs, thereby greatly improving work efficiency. At the same time, by providing a buffer ring and a buffer gasket, the good buffering effect of the buffer sheet can effectively buffer the piston body and the working piece when the system is working backward, thereby enhancing practicality.
[0004] During use, the above device is added with a buffer ring, a buffer gasket and a spring. Although the buffering effect is increased, the buffer gasket, the buffer ring and the spring will affect the extension and shortening of the oil rod to a certain extent. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a hydraulic master oil cylinder structure with buffer protection and without affecting the extension and shortening of the oil rod.
[0006] The utility model discloses a hydraulic master oil cylinder structure, comprising a cylinder body, a sealing cover A, a sealing cover B, an oil inlet and an oil return port, wherein the right end of the cylinder body is provided with a sealing cover A, the left end of the cylinder body is provided with a sealing cover B, the sealing cover A is provided with an oil return port, the sealing cover B is provided with an oil inlet, and further comprising a No. 1 buffer structure, a No. 2 buffer structure and an oil rod assembly, the interior of the cylinder body is provided with an oil rod assembly for sliding, the right part of the oil rod assembly passes through the sealing cover A and is slidably sealed with the sealing cover A, the No. 2 buffer structure is provided in the sealing cover A, the No. 1 buffer structure is provided in the sealing cover B, the oil inlet is communicated with the No. 1 buffer structure, and the oil return port is communicated with the No. 2 buffer structure; the oil rod assembly When the assembly is extended, the hydraulic oil enters the No. 1 buffer structure through the oil inlet and causes the oil rod assembly to move to the right. When the oil rod assembly moves to the right end of the cylinder body, the No. 2 buffer structure provides buffering protection for the oil rod assembly to prevent the oil rod assembly inside the cylinder body from colliding with the right end of the cylinder body. When the oil rod assembly is shortened, the hydraulic oil enters the No. 2 buffer structure through the A sealing cover and enters the interior of the cylinder body, thereby causing the oil rod assembly to move to the left in the cylinder body. When the oil rod assembly moves to the left end of the cylinder body, the No. 1 buffer assembly buffers the oil rod assembly to avoid collision with the left end of the cylinder body, thereby achieving buffering protection without affecting the extension and shortening of the oil rod assembly.
[0007] Preferably, the oil rod assembly includes a piston, a rubber sealing ring, an oil rod, a sealing rod and a sealing ring. The outer wall of the piston is fixedly covered with a rubber sealing ring. The outer wall of the rubber sealing ring is in sealing sliding contact with the inner wall of the cylinder body. An oil rod is provided at the right end of the piston. The right end of the oil rod passes through the A sealing cover and is slidingly and sealingly connected to the A sealing cover. A sealing rod is provided at the center of the left end of the piston, and a sealing ring is provided on the oil rod. When the oil rod is extended, the hydraulic oil enters the interior of the cylinder body through the oil inlet and the No. 2 buffer structure, so that the piston drives the oil rod to move to the right with the cooperation of the rubber sealing ring. When the oil rod is shortened, the hydraulic oil enters the interior of the cylinder body through the oil return port and the No. 1 buffer assembly, so that the piston drives the oil rod to move to the left with the cooperation of the rubber sealing ring, thereby improving flexibility.
[0008] Preferably, the first buffer structure includes chamber No. 1, oil hole No. 1 and side hole No. 1, chamber No. 1 is provided inside the B sealing cover, chamber No. 1 is communicated with the oil inlet, oil hole No. 1 is provided in the middle of the right end of chamber No. 1, two groups of side holes No. 1 are provided at the right end of chamber No. 1, oil hole No. 1 is in the middle of the two groups of side holes No. 1, and oil hole No. 1 is adapted to the sealing rod; when the oil rod is shortened, the piston, rubber sealing ring, oil rod and sealing rod move to the left, and at the same time, the hydraulic oil on the left side of the piston enters chamber No. 1 through oil hole No. 1 and side hole No. 1 and is discharged through the oil inlet, when the left end of the piston is about to contact the right end of the B sealing cover, the sealing rod extends into the No. 1 oil hole for sealing, so that the hydraulic oil on the left side of the piston can only enter chamber No. 1 through side hole No. 1, and the hydraulic oil discharge space on the left side of the piston is instantly reduced, which will cause the piston to buffer, thereby preventing the piston from colliding with the right end of the B sealing cover.
[0009] Preferably, the second buffer assembly includes a No. 2 chamber, a No. 2 oil hole and a No. 2 side hole. The interior of the A sealing cover is provided with a No. 2 chamber, the left end of the No. 1 oil hole is provided with a No. 2 oil hole, and the right end of the No. 1 oil hole is provided with two groups of No. 2 side holes. The No. 2 oil hole is between the two groups of No. 2 side holes, the oil rod passes through the No. 2 oil hole, and the sealing ring is adapted to the No. 2 oil hole; when the oil rod is extended, the piston, the rubber sealing ring and the oil rod move to the right, and when the right end of the piston contacts the left end of the A sealing cover, the sealing ring enters the No. 2 oil hole to seal the No. 2 oil hole, so that the hydraulic oil on the right side of the piston can only enter the No. 2 chamber through the No. 2 side hole. Since the No. 2 oil hole is blocked, the hydraulic oil on the right side of the piston will provide buffering protection for the piston, thereby preventing the right end of the piston from hard collision with the left end of the A sealing cover, thereby improving buffering protection.
[0010] Preferably, a guide sleeve is further included. The right end of the A sealing cover is provided with a guide sleeve, and the oil rod is slidingly and sealingly connected to the guide sleeve; the oil rod and the guide sleeve are slidingly and sealingly connected to prevent the hydraulic oil inside the cylinder from overflowing and improve the sealing performance.
[0011] Preferably, the A sealing cover and the B sealing cover are respectively welded to the cylinder body; the A sealing cover and the B sealing cover are respectively welded to the cylinder body to improve the connection firmness.
[0012] Preferably, the outer side wall of the cylinder body is provided with an anti-rust coating; under the protection of the anti-rust coating, the cylinder body is reduced from rusting and the service life is increased.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when the oil rod assembly is extended, the hydraulic oil enters the No. 1 buffer structure through the oil inlet and causes the oil rod assembly to move to the right; when the oil rod assembly moves to the right end of the cylinder body, the No. 2 buffer structure provides buffering protection for the oil rod assembly to prevent the oil rod assembly inside the cylinder body from colliding with the right end of the cylinder body; when the oil rod assembly is shortened, the hydraulic oil enters the No. 2 buffer structure through the A sealing cover and enters the interior of the cylinder body, thereby causing the oil rod assembly to move to the left in the cylinder body; when the oil rod assembly moves to the left end of the cylinder body, the No. 1 buffer assembly buffers the oil rod assembly to avoid collision between the oil rod assembly and the left end inside the cylinder body, thereby achieving buffering protection without affecting the extension and shortening of the oil rod assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic cross-sectional structure diagram of the utility model in a shortened state;
[0015] Figure 2 yes Figure 1 A schematic diagram of the partially enlarged structure of the middle part A;
[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in the extended state;
[0017] Figure 4 This is an axonometric structural diagram of the utility model;
[0018] Figure 5 It is an enlarged structural diagram of the piston and sealing ring;
[0019] Markings in the accompanying drawings: 1. Cylinder body; 2. Sealing cover A; 3. Sealing cover B; 4. Oil inlet; 5. Oil return port; 6. Piston; 7. Rubber sealing ring; 8. Oil rod; 9. Sealing rod; 10. Sealing ring; 11. Chamber No. 1; 12. Oil hole No. 1; 13. Side hole No. 1; 14. Chamber No. 2; 15. Oil hole No. 2; 16. Side hole No. 2; 17. Guide sleeve. DETAILED DESCRIPTION
[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example 1
[0021] like Figure 1 、 Figure 3 and Figure 4 As shown, a hydraulic master oil cylinder structure of the present invention includes a cylinder body 1, a sealing cover A 2, a sealing cover B 3, an oil inlet 4 and an oil return port 5. The right end of the cylinder body 1 is provided with a sealing cover A 2, the left end of the cylinder body 1 is provided with a sealing cover B 3, the sealing cover A 2 is provided with an oil return port 5, the sealing cover B 3 is provided with an oil inlet 4, and also includes a No. 1 buffer structure, a No. 2 buffer structure and an oil rod assembly. The interior of the cylinder body 1 is slidably provided with an oil rod assembly, the right part of the oil rod assembly passes through the sealing cover A 2 and is slidably and sealedly connected to the sealing cover A 2, the sealing cover A 2 is provided with a No. 2 buffer structure, the sealing cover B 3 is provided with a No. 1 buffer structure, the oil inlet 4 is communicated with the No. 1 buffer structure, and the oil return port 5 is communicated with the No. 2 buffer structure;
[0022] like Figure 1 and Figure 5 As shown, the oil rod assembly includes a piston 6, a rubber sealing ring 7, an oil rod 8, a sealing rod 9 and a sealing ring 10. The outer wall of the piston 6 is fixedly sleeved with the rubber sealing ring 7. The outer wall of the rubber sealing ring 7 is in sealing sliding contact with the inner wall of the cylinder body 1. The right end of the piston 6 is provided with an oil rod 8. The right end of the oil rod 8 passes through the sealing cover A 2 and is in sliding and sealing connection with the sealing cover A 2. A sealing rod 9 is provided at the center of the left end of the piston 6, and a sealing ring 10 is provided on the oil rod 8.
[0023] like Figure 1 、 Figure 2 and Figure 3As shown, the first buffer structure includes a No. 1 chamber 11, a No. 1 oil hole 12 and a No. 1 side hole 13. The No. 1 chamber 11 is provided inside the B sealing cover 3. The No. 1 chamber 11 is communicated with the oil inlet 4. The No. 1 oil hole 12 is provided in the middle of the right end of the No. 1 chamber 11. Two groups of No. 1 side holes 13 are provided on the right end of the No. 1 chamber 11. The No. 1 oil hole 12 is located between the two groups of No. 1 side holes 13. The No. 1 oil hole 12 is adapted to the sealing rod 9.
[0024] like Figure 1 、 Figure 2 and Figure 3 As shown, the second buffer assembly includes a No. 2 chamber 14, a No. 2 oil hole 15 and a No. 2 side hole 16. The interior of the A sealing cover 2 is provided with a No. 2 chamber 14, the left end of the No. 1 oil hole 12 is provided with a No. 2 oil hole 15, and the right end of the No. 1 oil hole 12 is provided with two groups of No. 2 side holes 16. The No. 2 oil hole 15 is between the two groups of No. 2 side holes 16, the oil rod 8 passes through the No. 2 oil hole 15, and the sealing ring 10 is adapted to the No. 2 oil hole 15.
[0025] When the oil rod assembly is extended, the hydraulic oil enters the No. 1 buffer structure through the oil inlet 4 and causes the oil rod assembly to move to the right. When the oil rod assembly moves to the right end of the cylinder body 1, the No. 2 buffer structure provides buffering protection for the oil rod assembly to prevent the oil rod assembly inside the cylinder body 1 from colliding with the right end of the cylinder body 1. When the oil rod assembly is shortened, the hydraulic oil enters the No. 2 buffer structure through the A sealing cover 2 and enters the interior of the cylinder body 1, thereby causing the oil rod assembly to move to the left in the cylinder body 1. When the oil rod assembly moves to the left end of the cylinder body 1, the No. 1 buffer assembly buffers the oil rod assembly to avoid collision with the left end of the cylinder body 1, achieving buffering protection without affecting the extension and shortening of the oil rod assembly. When the oil rod 8 is shortened, the piston 6, rubber sealing ring 7, oil rod 8 and sealing rod 9 move to the left. At the same time, the hydraulic oil on the left side of the piston 6 enters the No. 1 chamber 11 through the No. 1 oil hole 12 and the No. 1 side hole 13 and The oil is discharged through the oil inlet 4. When the left end of the piston 6 is about to contact the right end of the B sealing cover 3, the sealing rod 9 extends into the No. 1 oil hole 12 to seal it, so that the hydraulic oil on the left side of the piston 6 can only enter the No. 1 chamber 11 through the No. 1 side hole 13. The hydraulic oil discharge space on the left side of the piston 6 is instantly reduced, which will cause the piston 6 to buffer and prevent the piston 6 from colliding with the right end of the B sealing cover 3. When the oil rod 8 is extended, the piston 6, the rubber sealing ring 7 and the oil rod 8 move to the right. When the right end of the piston 6 contacts the left end of the A sealing cover 2, the sealing ring 10 enters the No. 2 oil hole 15 to block the No. 2 oil hole 15, so that the hydraulic oil on the right side of the piston 6 can only enter the No. 2 chamber 14 through the No. 2 side hole 16. Since the No. 2 oil hole 15 is blocked, the hydraulic oil on the right side of the piston 6 will buffer and protect the piston 6, thereby preventing the right end of the piston 6 from hard collision with the left end of the A sealing cover 2, thereby improving the buffering protection. Example 2
[0026] like Figure 1 、 Figure 3 and Figure 4 As shown, a hydraulic master oil cylinder structure of the present invention includes a cylinder body 1, a sealing cover A 2, a sealing cover B 3, an oil inlet 4 and an oil return port 5. The right end of the cylinder body 1 is provided with a sealing cover A 2, the left end of the cylinder body 1 is provided with a sealing cover B 3, the sealing cover A 2 is provided with an oil return port 5, the sealing cover B 3 is provided with an oil inlet 4, and also includes a No. 1 buffer structure, a No. 2 buffer structure and an oil rod assembly. The interior of the cylinder body 1 is slidably provided with an oil rod assembly, the right part of the oil rod assembly passes through the sealing cover A 2 and is slidably and sealedly connected to the sealing cover A 2, the sealing cover A 2 is provided with a No. 2 buffer structure, the sealing cover B 3 is provided with a No. 1 buffer structure, the oil inlet 4 is communicated with the No. 1 buffer structure, and the oil return port 5 is communicated with the No. 2 buffer structure;
[0027] like Figure 1 and Figure 5 As shown, the oil rod assembly includes a piston 6, a rubber sealing ring 7, an oil rod 8, a sealing rod 9 and a sealing ring 10. The outer wall of the piston 6 is fixedly sleeved with the rubber sealing ring 7. The outer wall of the rubber sealing ring 7 is in sealing sliding contact with the inner wall of the cylinder body 1. The right end of the piston 6 is provided with an oil rod 8. The right end of the oil rod 8 passes through the sealing cover A 2 and is in sliding and sealing connection with the sealing cover A 2. A sealing rod 9 is provided at the center of the left end of the piston 6, and a sealing ring 10 is provided on the oil rod 8.
[0028] like Figure 1 、 Figure 2 and Figure 3 As shown, the first buffer structure includes a No. 1 chamber 11, a No. 1 oil hole 12 and a No. 1 side hole 13. The No. 1 chamber 11 is provided inside the B sealing cover 3. The No. 1 chamber 11 is communicated with the oil inlet 4. The No. 1 oil hole 12 is provided in the middle of the right end of the No. 1 chamber 11. Two groups of No. 1 side holes 13 are provided on the right end of the No. 1 chamber 11. The No. 1 oil hole 12 is located between the two groups of No. 1 side holes 13. The No. 1 oil hole 12 is adapted to the sealing rod 9.
[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, the second buffer assembly includes a No. 2 chamber 14, a No. 2 oil hole 15, and a No. 2 side hole 16. The No. 2 chamber 14 is provided inside the A sealing cover 2. The No. 2 oil hole 15 is provided at the left end of the No. 1 oil hole 12. Two groups of No. 2 side holes 16 are provided at the right end of the No. 1 oil hole 12. The No. 2 oil hole 15 is between the two groups of No. 2 side holes 16. The oil rod 8 passes through the No. 2 oil hole 15, and the sealing ring 10 is adapted to the No. 2 oil hole 15.
[0030] like Figure 4As shown, it also includes a guide sleeve 17. The right end of the A sealing cover 2 is provided with a guide sleeve 17. The oil rod 8 is slidingly and sealingly connected to the guide sleeve 17. The A sealing cover 2 and the B sealing cover 3 are respectively welded to the cylinder body 1. The outer wall of the cylinder body 1 is provided with an anti-rust coating.
[0031] In this embodiment, when the oil rod assembly is extended, the hydraulic oil enters the No. 1 buffer structure through the oil inlet 4 and causes the oil rod assembly to move to the right. When the oil rod assembly moves to the right end of the cylinder body 1, the No. 2 buffer structure provides buffering protection for the oil rod assembly to prevent the oil rod assembly inside the cylinder body 1 from colliding with the right end of the cylinder body 1. When the oil rod assembly is shortened, the hydraulic oil enters the No. 2 buffer structure through the A sealing cover 2 and enters the inside of the cylinder body 1, thereby causing the oil rod assembly to move to the left in the cylinder body 1. When the oil rod assembly moves to the left end of the cylinder body 1, the No. 1 buffer structure The buffer assembly buffers the oil rod assembly, thereby avoiding collision between the oil rod assembly and the left end of the cylinder body 1, achieving buffer protection while not affecting the extension and shortening of the oil rod assembly. When the oil rod 8 is shortened, the piston 6, rubber sealing ring 7, oil rod 8 and sealing rod 9 move to the left. At the same time, the hydraulic oil on the left side of the piston 6 enters the No. 1 chamber 11 through the No. 1 oil hole 12 and the No. 1 side hole 13 and is discharged through the oil inlet 4. When the left end of the piston 6 is about to contact the right end of the B sealing cover 3, the sealing rod 9 extends into the No. 1 oil hole 12 for The oil in the oil well 11 is blocked, so that the hydraulic oil on the left side of the piston 6 can only enter the No. 1 chamber 11 through the No. 1 side hole 13. The hydraulic oil discharge space on the left side of the piston 6 is reduced instantly, which will cause the piston 6 to buffer and prevent the piston 6 from colliding with the right end of the B sealing cover 3. When the oil rod 8 is extended, the piston 6, the rubber sealing ring 7 and the oil rod 8 move to the right. When the right end of the piston 6 contacts the left end of the A sealing cover 2, the sealing ring 10 enters the No. 2 oil hole 15 to block the No. 2 oil hole 15, so that the hydraulic oil on the right side of the piston 6 can only pass through the No. 1 side hole 13. It enters the No. 2 chamber 14 through the No. 2 side hole 16. Since the No. 2 oil hole 15 is blocked, the hydraulic oil on the right side of the piston 6 will provide buffering protection for the piston 6, thereby preventing the right end of the piston 6 from hard collision with the left end of the A sealing cover 2, thereby improving buffering protection. The oil rod 8 is slidingly sealed in connection with the guide sleeve 17 to prevent the hydraulic oil inside the cylinder body 1 from overflowing and improve sealing. The A sealing cover 2 and the B sealing cover 3 are respectively welded to the cylinder body 1 to improve the connection firmness. The cylinder body 1 is protected by the anti-rust coating, which reduces rust and increases its service life.
[0032] The cylinder body 1, B sealing cover 3, A sealing cover 2, piston 6, rubber sealing ring 7 and oil rod 8 of the hydraulic master oil cylinder structure of the utility model are purchased on the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.
[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A hydraulic master oil cylinder structure, comprising a cylinder body (1), a sealing cover A (2), a sealing cover B (3), an oil inlet (4) and an oil return port (5), wherein the right end of the cylinder body (1) is provided with the sealing cover A (2), the left end of the cylinder body (1) is provided with the sealing cover B (3), the sealing cover A (2) is provided with the oil return port (5), and the sealing cover B (3) is provided with the oil inlet (4), characterized in that: The invention also includes a No. 1 buffer structure, a No. 2 buffer structure and an oil rod assembly. The oil rod assembly is slidably provided inside the cylinder body (1). The right part of the oil rod assembly passes through the A sealing cover (2) and is slidably sealed with the A sealing cover (2). The No. 2 buffer structure is provided in the A sealing cover (2). The No. 1 buffer structure is provided in the B sealing cover (3). The oil inlet (4) is communicated with the No. 1 buffer structure, and the oil return port (5) is communicated with the No. 2 buffer structure.
2. A hydraulic master cylinder structure according to claim 1, characterized in that: The oil rod assembly comprises a piston (6), a rubber sealing ring (7), an oil rod (8), a sealing rod (9) and a sealing ring (10). The outer wall of the piston (6) is fixedly sleeved with the rubber sealing ring (7). The outer wall of the rubber sealing ring (7) is in sealing sliding contact with the inner wall of the cylinder body (1). The right end of the piston (6) is provided with an oil rod (8). The right end of the oil rod (8) passes through the A sealing cover (2) and is connected to the A sealing cover (2) in a sliding and sealing manner. The sealing rod (9) is provided at the center of the left end of the piston (6). The oil rod (8) is provided with a sealing ring (10).
3. A hydraulic master cylinder structure according to claim 2, characterized in that: The first buffer structure includes a No. 1 chamber (11), a No. 1 oil hole (12) and a No. 1 side hole (13). The No. 1 chamber (11) is provided inside the B sealing cover (3). The No. 1 chamber (11) is communicated with the oil inlet (4). The No. 1 oil hole (12) is provided at the middle of the right end of the No. 1 chamber (11). Two groups of No. 1 side holes (13) are provided at the right end of the No. 1 chamber (11). The No. 1 oil hole (12) is located between the two groups of No. 1 side holes (13). The No. 1 oil hole (12) is adapted to the sealing rod (9).
4. A hydraulic master cylinder structure according to claim 2, characterized in that: The second buffer assembly includes a No. 2 chamber (14), a No. 2 oil hole (15) and a No. 2 side hole (16). The No. 2 chamber (14) is provided inside the A sealing cover (2). The No. 2 oil hole (15) is provided at the left end of the No. 1 oil hole (12). Two groups of No. 2 side holes (16) are provided at the right end of the No. 1 oil hole (12). The No. 2 oil hole (15) is between the two groups of No. 2 side holes (16). The oil rod (8) passes through the No. 2 oil hole (15). The sealing ring (10) is adapted to the No. 2 oil hole (15).
5. A hydraulic master cylinder structure according to claim 2, characterized in that: It also includes a guide sleeve (17). The right end of the A sealing cover (2) is provided with the guide sleeve (17), and the oil rod (8) is connected to the guide sleeve (17) in a sliding and sealing manner.
6. A hydraulic master cylinder structure according to claim 1, characterized in that: The A sealing cover (2) and the B sealing cover (3) are respectively welded to the cylinder body (1).
7. The hydraulic master cylinder structure according to claim 1, characterized in that: The outer side wall of the cylinder body (1) is provided with a rust-proof coating.
Citation Information
Patent Citations
Hydraulic oil cylinder with buffer protection function
CN211852377U