A lever-type oil cylinder that can rotate 360 degrees

Abstract

The present invention discloses a lever-type oil cylinder capable of 360-degree steering in the field of oil cylinders, which comprises a cylinder body and a rotary seal cylinder head seat. A guide hole is formed in the middle of the cylinder body. A bottom plug is arranged at the bottom end of the guide hole. A piston is arranged inside the guide hole. A piston rod is arranged at the top of the piston, and the top end of the piston rod penetrates through the top of the guide hole. In the present invention, movable beads are injected into two hemispherical clamping holes formed between the rotary seal cylinder head seat and the cylinder body, so as to realize the axial limit of the rotary seal cylinder head seat. Moreover, lubricating oil can be injected into the hemispherical clamping holes, and the beads can provide guidance for the rotation of the rotary seal cylinder head seat, which is equivalent to the function of a bearing. The rotation resistance of the rotary seal cylinder head seat can be greatly reduced, making its rotation more flexible and reliable, meeting the requirements of locking at different angles, being flexible and changeable, and making its use more flexible.

Description

Technical Field

[0001] The present invention relates to the field of oil cylinders, and specifically to a lever-type oil cylinder that can rotate 360 degrees. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it can eliminate the deceleration device, and there is no transmission gap, and the motion is stable. Therefore, it is widely used in the hydraulic systems of various machines. In the field of fixing some work jigs, a hydraulic cylinder is needed to lock workpieces, etc. However, when the existing oil cylinders are locked, most of their output ends cannot be rotated and adjusted, so the scope of use is limited. Moreover, the rotation of the oil cylinders with rotation adjustment is not flexible enough, and the adjustment is rather laborious. At the same time, sometimes due to limited space during the locking process, the use of the oil cylinder will also be restricted. Therefore, the technical personnel in this field have provided a lever-type oil cylinder that can rotate 360 degrees to solve the problems raised in the above background art. Summary of the Invention

[0003] The purpose of the present invention is to provide a lever-type oil cylinder that can rotate 360 degrees to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A lever-type oil cylinder that can rotate 360 degrees includes a cylinder body and a rotary seal cylinder head seat. A guide hole is provided in the middle of the cylinder body. A bottom plug is provided at the bottom end of the guide hole. A piston is arranged inside the guide hole. A piston rod is arranged at the top of the piston. The top end of the piston rod penetrates through the top of the guide hole. The rotary seal cylinder head seat is arranged at the top end of the cylinder body and located around the piston rod. A hinge seat is integrally formed at the top edge of the rotary seal cylinder head seat. A lever press head is arranged above the hinge seat. Connecting plates are connected to both sides of the middle parts of the hinge seat and the lever press head. The lever press head and the top end of the piston rod are rotationally connected through a pin shaft. The hinge seat and the lever press head and the connecting plates are all rotationally connected through a pin shaft.

[0006] As a further scheme of the present invention: The rotary seal cylinder head seat is made of brass, and hemispherical clamping holes are provided on the outer wall of the rotary seal cylinder head seat and the inner wall of the combined part of the cylinder body and the rotary seal cylinder head seat.

[0007] As a further scheme of the present invention: A clamping ball is movably installed inside the hemispherical clamping hole. A clamping ball installation hole communicating with the hemispherical clamping hole is provided on the side wall of the cylinder body. A sealing plug is hermetically connected to the inside of the clamping ball installation hole through a thread.

[0008] As a further solution of the present invention: four mounting counterbores are provided at the four corners of the cylinder block around the guide hole, an oil return pipeline and an oil inlet pipeline are provided on one side of the guide hole at the bottom end of the cylinder block, and both the oil return pipeline and the oil inlet pipeline are of a T-shaped structure.

[0009] As a further solution of the present invention: one end at the top of the oil inlet pipeline communicates with the area inside the guide hole below the piston, one end at the top of the oil return pipeline communicates with the area inside the guide hole above the piston, the other end at the top of the oil inlet pipeline is hermetically connected with an oil inlet plug by threads, and the other end at the top of the oil return pipeline is hermetically connected with an oil return plug by threads.

[0010] As a further solution of the present invention: sealing grooves are provided on the outer wall of the piston, the inner wall and the outer wall of the rotary seal cylinder head seat, and on the inner wall of the cylinder block around the rotary seal cylinder head seat, and sealing rings for sealing are clamped inside the sealing grooves.

[0011] As a further solution of the present invention: the bottom plug is hermetically connected with the cylinder block by threads, and an O-shaped sealing ring for sealing is clamped between the outer periphery of the bottom plug and the guide hole.

[0012] As a further solution of the present invention: the rotary seal cylinder head seat is rotatably connected with the cylinder block through the beads, the sealing groove on the outer wall of the rotary seal cylinder head seat is located in the area above the hemispherical clamping hole, and the sealing groove on the inner wall of the cylinder block is located in the area below the hemispherical clamping hole.

[0013] As a further solution of the present invention: the piston and the piston rod are integrally formed, and the piston is slidably and hermetically connected with the guide hole.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By injecting movable beads into two hemispherical clamping holes provided between the rotary seal cylinder head seat and the cylinder block, the present invention realizes the axial limit of the rotary seal cylinder head seat, and lubricating oil can be injected into the hemispherical clamping holes. The beads can provide guidance for the rotation of the rotary seal cylinder head seat, which is equivalent to the function of a bearing. The rotation resistance of the rotary seal cylinder head seat can be greatly reduced, making its rotation more flexible and reliable, meeting the requirements of locking at different angles, being flexible and changeable, and making it more flexible to use.

[0016] 2. Under the action of this oil cylinder, the piston rod can perform telescopic movement, which can drive the lever press head to move back and forth under the active support of the connecting plate, so as to realize the pressing and loosening operations on the movable parts that need to be pressed and cooperate with this oil cylinder. This can greatly reduce the space occupation and make its use more convenient and flexible, which is extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a bottom view of the present invention;

[0019] Figure 3 is a left sectional view of the present invention;

[0020] Figure 4 is the present invention Figure 3 a sectional view of the C-C part in;

[0021] Figure 5 is an exploded view of the present invention;

[0022] Figure 6 is a sectional exploded view of the present invention.

[0023] In the figure: 1. Cylinder block; 2. Oil return plug; 3. Oil inlet plug; 4. Installation counterbore; 5. Rotating seal cylinder head seat; 6. Piston rod; 7. Hinge seat; 8. Connecting plate; 9. Lever press head; 10. Oil return pipeline; 11. Oil inlet pipeline; 12. Guide hole; 13. Piston; 14. Hemispherical clamping hole; 15. Ball; 16. Sealing groove; 17. Sealing ring; 18. Bottom plug; 19. Ball installation hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 6, in the embodiment of the present invention, a lever-type oil cylinder that can rotate 360 degrees includes a cylinder block 1 and a rotating seal cylinder head seat 5. A guide hole 12 is provided in the middle of the cylinder block 1. A bottom plug 18 is arranged at the bottom end of the guide hole 12. A piston 13 is arranged inside the guide hole 12. A piston rod 6 is arranged at the top of the piston 13. The top end of the piston rod 6 penetrates through the top of the guide hole 12. The rotating seal cylinder head seat 5 is arranged at the top end of the cylinder block 1 and is located outside the piston rod 6. A hinge seat 7 is integrally formed at the top edge of the rotating seal cylinder head seat 5. A lever pressing head 9 is arranged above the hinge seat 7. Connecting plates 8 are connected to both sides of the middle parts of the hinge seat 7 and the lever pressing head 9. The lever pressing head 9 is rotatably connected to the top end of the piston rod 6 through a pin shaft. The hinge seat 7 and the lever pressing head 9 are rotatably connected to the connecting plates 8 through pin shafts.

[0026] By adopting the above technical solution, under the action of this oil cylinder, the piston rod 6 can perform telescopic movement, which can drive the lever pressing head 9 to move back and forth at the end under the movable support of the connecting plate 8, so as to realize the pressing and loosening operations on the movable parts that need to be pressed and cooperate with this oil cylinder. It can greatly reduce the space occupation, make its use more convenient and flexible, and is very practical. By setting the connecting plate 8 to provide movable support for the lever pressing head 9 and the hinge seat 7, it can provide a limit for the rotational movement of the lever pressing head 9, and further provide a hard limit for the movement of the piston rod 6 in the oil cylinder, which is very practical.

[0027] Among them, the rotating seal cylinder head seat 5 is made of brass. Hemispherical clamping holes 14 are provided on the outer wall of the rotating seal cylinder head seat 5 and the inner wall of the combined part of the cylinder block 1 and the rotating seal cylinder head seat 5. A clamping ball 15 is movably installed inside the hemispherical clamping hole 14. A clamping ball installation hole 19 communicating with the hemispherical clamping hole 14 is provided on the side wall of the cylinder block 1. A sealing plug is threadedly and hermetically connected inside the clamping ball installation hole 19.

[0028] By adopting the above technical solution, by injecting the movable clamping ball 15 into the two hemispherical clamping holes 14 provided between the rotating seal cylinder head seat 5 and the cylinder block 1, the axial limit of the rotating seal cylinder head seat 5 is realized. Moreover, lubricating oil can be injected into the hemispherical clamping holes 14. The clamping ball 15 can provide guidance for the rotation of the rotating seal cylinder head seat 5, which is equivalent to the function of a bearing. It can greatly reduce the rotation resistance of the rotating seal cylinder head seat 5, make its rotation more flexible and reliable, meet the requirements of locking at different angles, be flexible and changeable, and make its use more flexible.

[0029] Among them, four mounting counterbores 4 are provided at the four corners of the cylinder block 1 around the guide hole 12. At one side of the guide hole 12 at the bottom end of the cylinder block 1, an oil return pipeline 10 and an oil inlet pipeline 11 are provided. Both the oil return pipeline 10 and the oil inlet pipeline 11 are of T-shaped structure. This oil cylinder can be installed through the mounting counterbores 4. The oil inlet pipeline 11 and the oil return pipeline 10 can be respectively connected to a reversing valve with a circulating oil circuit connected externally.

[0030] Among them, one end at the top of the oil inlet pipeline 11 communicates with the area below the piston 13 inside the guide hole 12, and one end at the top of the oil return pipeline 10 communicates with the area above the piston 13 inside the guide hole 12. The other end at the top of the oil inlet pipeline 11 is hermetically connected with an oil inlet plug 3 by thread, and the other end at the top of the oil return pipeline 10 is hermetically connected with an oil return plug 2 by thread. The oil inlet plug 3 and the oil return plug 2 can seal an opening communicating with the outside in the T-shaped oil inlet pipeline 11 and the oil return pipeline 10.

[0031] Among them, sealing grooves 16 are provided on the outer wall of the piston 13, the inner wall and the outer wall of the rotary seal cylinder head seat 5, and on the inner wall of the cylinder block 1 around the rotary seal cylinder head seat 5. Sealing rings 17 for sealing are clamped inside the sealing grooves 16. The sealing rings 17 can provide sealing for the moving parts in this oil cylinder.

[0032] Among them, the bottom plug 18 is hermetically connected with the cylinder block 1 by thread, and an O-shaped sealing ring 17 for sealing is clamped between the outer periphery of the bottom plug 18 and the guide hole 12. The O-shaped sealing ring 17 can seal the bottom plug 18.

[0033] Among them, the rotary seal cylinder head seat 5 is rotatably connected with the cylinder block 1 through a ball 15. The sealing groove 16 on the outer wall of the rotary seal cylinder head seat 5 is located in the area above the hemispherical clamping hole 14, and the sealing groove 16 on the inner wall of the cylinder block 1 is located in the area below the hemispherical clamping hole 14. Sealing of the area around the ball 15 can be realized, which is convenient for injecting lubricating oil to lubricate the ball 15 and makes the rotation of the rotary seal cylinder head seat 5 more flexible.

[0034] In this embodiment, the piston 13 and the piston rod 6 are integrally formed, and the piston 13 is slidably and hermetically connected with the guide hole 12.

[0035] The working principle of the present invention is as follows: When using this oil cylinder, it can be installed and fixed by installing the counterbore 4, so that the lever press head 9 is aligned with the locking part to be pressed. Then, the oil inlet pipeline 11 and the oil return pipeline 10 are connected to the reversing valve with an external hydraulic oil circuit through pipelines. By controlling the oil inlet of the oil inlet pipeline 11 and the oil outlet of the oil return pipeline 10, the piston 13 and the piston rod 6 can be pushed to move upward. Under the action of this oil cylinder, the lever press head 9 can be driven to move back and forth at the end under the movable support of the connecting plate 8, thereby realizing the pressing operation on the movable part to be pressed that cooperates with this oil cylinder, which is very practical. By the action of the reversing valve, the oil inlet pipeline 11 can be controlled to return oil, and the oil return pipeline 10 can be controlled to inlet oil, so that the piston 13 and the piston rod 6 contract and move, thereby realizing the loosening operation on the movable part to be pressed that cooperates with this oil cylinder. By setting the connecting plate 8 to provide a movable support for the lever press head 9 and the hinge seat 7, it can provide a limit for the rotational movement of the lever press head 9, and thus can provide a hard limit for the movement of the piston rod 6 in the oil cylinder, which is very practical. By injecting the movable ball beads 15 into the two hemispherical card holes 14 opened between the rotating seal cylinder head seat 5 and the cylinder block 1, the axial limit of the rotating seal cylinder head seat 5 is realized, and lubricating oil can be injected into the hemispherical card holes 14. The ball beads 15 can provide guidance for the rotation of the rotating seal cylinder head seat 5, equivalent to the function of a bearing, which can greatly reduce the rotation resistance of the rotating seal cylinder head seat 5 and make its rotation more flexible and reliable, meeting the requirements of locking at different angles, being flexible and changeable, and making its use more flexible.

[0036] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A lever-type oil cylinder that can rotate 360 degrees, comprising a cylinder block (1) and a rotating seal cylinder head seat (5), characterized in that: A guiding hole (12) is formed in the middle of the cylinder block (1). A bottom plug (18) is arranged at the bottom end of the guiding hole (12). A piston (13) is arranged inside the guiding hole (12). A piston rod (6) is arranged at the top of the piston (13). The top end of the piston rod (6) penetrates through the top of the guiding hole (12). The rotary sealing cylinder head seat (5) is arranged at the top end of the cylinder block (1) and around the piston rod (6). A hinge seat (7) is integrally formed at the top edge of the rotary sealing cylinder head seat (5). A lever press head (9) is arranged above the hinge seat (7). Connecting plates (8) are connected to both sides of the middle parts of the hinge seat (7) and the lever press head (9). The lever press head (9) is rotatably connected to the top end of the piston rod (6) through a pin shaft. The hinge seat (7), the lever press head (9) and the connecting plates (8) are all rotatably connected through pin shafts; The rotary sealing cylinder head seat (5) is made of brass, and hemispherical clamping holes (14) are formed on the outer wall of the rotary sealing cylinder head seat (5) and the inner wall of the combined part of the cylinder block (1) and the rotary sealing cylinder head seat (5); A clamping bead (15) is movably arranged inside the hemispherical clamping hole (14). A clamping bead mounting hole (19) communicating with the hemispherical clamping hole (14) is formed on the side wall of the cylinder block (1). A sealing plug is hermetically connected inside the clamping bead mounting hole (19) through threads.

2. A lever-type oil cylinder capable of 360-degree rotation according to claim 1, characterized in that: Four mounting counterbores (4) are formed at the four corners around the guiding hole (12) on the cylinder block (1). An oil return pipeline (10) and an oil inlet pipeline (11) are formed on one side of the guiding hole (12) at the bottom end of the cylinder block (1). Both the oil return pipeline (10) and the oil inlet pipeline (11) are of a T-shaped structure.

3. The lever-type oil cylinder capable of 360-degree rotation according to claim 2, wherein: One top end of the oil inlet pipeline (11) communicates with the area below the piston (13) inside the guiding hole (12). One top end of the oil return pipeline (10) communicates with the area above the piston (13) inside the guiding hole (12). The other top end of the oil inlet pipeline (11) is hermetically connected with an oil inlet plug (3) through threads. The other top end of the oil return pipeline (10) is hermetically connected with an oil return plug (2) through threads.

4. A lever-type oil cylinder capable of 360-degree rotation according to claim 3, characterized in that: Sealing grooves (16) are formed on the outer wall of the piston (13), the inner wall and the outer wall of the rotary sealing cylinder head seat (5), and the inner wall of the cylinder block (1) around the rotary sealing cylinder head seat (5). Sealing rings (17) for sealing are clamped inside the sealing grooves (16).

5. A lever-type oil cylinder that can be rotated 360 degrees according to claim 4, characterized in that: The bottom plug (18) is hermetically connected with the cylinder block (1) through threads, and a sealing ring (17) for sealing is clamped between the outer periphery of the bottom plug (18) and the guiding hole (12).

6. A lever-type oil cylinder capable of 360-degree rotation according to claim 5, characterized in that: The rotary seal cylinder head seat (5) is rotationally connected to the cylinder block (1) through the ball beads (15). The sealing groove (16) on the outer wall of the rotary seal cylinder head seat (5) is located in the upper area of the hemispherical clamping hole (14), and the sealing groove (16) on the inner wall of the cylinder block (1) is located in the lower area of the hemispherical clamping hole (14).

7. A lever-type oil cylinder capable of 360-degree rotation according to claim 1, characterized in that: The piston (13) is integrally formed with the piston rod (6), and the piston (13) is slidably and sealingly connected to the guide hole (12).

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