Hydraulic piston

Abstract

The utility model discloses a hydraulic piston which comprises a first piston body, a first threaded groove is formed in one side of the first piston body, a second piston body is in threaded connection with the interior of the first threaded groove, and a first sealing ring is movably connected to the outer side of the first piston body. A first threaded groove is formed in the first piston body, a third piston body is in threaded connection with the interior of the first threaded groove, a sealing groove is formed in the outer side of the third piston body, a second sealing ring is movably connected to the outer side of the sealing groove, and a buffering structure is arranged on one side of the second piston body. After the sealing ring is directly installed on the first piston main body, the first piston main body, the second piston main body and the third piston main body are installed conveniently and rapidly, disassembly is convenient, and the sealing ring is installed more easily and rapidly.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic pistons, and in particular relates to a hydraulic piston. 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 it is used to achieve reciprocating motion, the reduction 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. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is basically composed of a cylinder barrel, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device are specified according to the specific application occasions, and other devices are indispensable.

[0003] After the piston parts are manufactured, a sealing ring needs to be installed on the piston to complete the manufacturing of the entire piston. Existing hydraulic pistons are generally fixed in one piece, which is inconvenient to install the sealing ring. When replacement is needed, it is also inconvenient to remove and install, which increases labor intensity. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a hydraulic piston to solve the problem proposed in the above background technology that after the piston parts are completed, a sealing ring needs to be installed on the piston to complete the overall production of the piston. The existing hydraulic pistons are generally fixed and integrated, which is not convenient for installing the sealing ring. When replacement is needed, it is also not convenient to disassemble and install it, which increases the labor intensity.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic piston comprises a first piston body, a first thread groove is provided on one side of the first piston body, a second piston body is threadedly connected inside the first thread groove, a first sealing ring is movably connected to the outer side of the first piston body, a third piston body is threadedly connected inside the first thread groove, a sealing groove is provided on the outer side of the third piston body, a second sealing ring is movably connected to the outer side of the sealing groove, first screw holes are symmetrically provided on one side of the first piston body, second screw holes are symmetrically provided on one side of the second piston body, third screw holes are symmetrically provided on the other side of the first piston body, fourth screw holes are symmetrically provided on one side of the third piston body, and a buffer structure is provided on one side of the second piston body.

[0006] Preferably, the buffer structure includes a first buffer seat, which is fixedly connected to one side of the second piston body. A groove is provided on one side of the first buffer seat, a spring is fixedly connected to one side of the groove, the other end of the spring is fixedly connected to a buffer rod, and the other end of the buffer rod is fixedly connected to the second buffer seat.

[0007] Preferably, a second thread groove is provided on one side of the third piston body, and a piston rod is threadedly connected inside the second thread groove.

[0008] Preferably, the first threaded hole provided on one side of the first piston body and the second threaded hole provided on one side of the second piston body are located on the same vertical plane and are interconnected, and the third threaded hole provided on the other side of the first piston body and the fourth threaded hole provided on one side of the third piston body are located on the same vertical plane and are interconnected.

[0009] Preferably, the first piston body and the second piston body are connected by a first screw, and the first screw is located inside the first screw hole and the second screw hole, and the first piston body and the third piston body are connected by a second screw, and the second screw is located inside the third screw hole and the fourth screw hole.

[0010] Preferably, one end surface of the second piston body is rounded.

[0011] Preferably, the first piston body, the second piston body and the third piston body are all made of stainless steel.

[0012] Preferably, a plurality of grooves are provided.

[0013] Compared with the prior art, the utility model provides a hydraulic piston with the following beneficial effects:

[0014] 1. The utility model provides a first piston body, a second piston body and a third piston body, and the three can be disassembled. After the sealing ring is directly installed on the first piston body, the three can be installed, which is convenient and quick, easy to disassemble, and the installation of the sealing ring is simpler and faster.

[0015] 2. The utility model provides a buffer structure, which can play a buffering role when the hydraulic cylinder is in operation if there is too much liquid inside the hydraulic cylinder to prevent damage to the piston caused by excessive pressure.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a structural schematic diagram of a hydraulic piston body proposed by the utility model;

[0019] Figure 2 This is a structural schematic diagram of the bottom of the third piston body of a hydraulic piston proposed by the utility model;

[0020] Figure 3 It is a left side structural schematic diagram of a hydraulic piston proposed by the utility model with the first piston body, the second piston body and the third piston body disassembled;

[0021] Figure 4 It is a structural schematic diagram of the left side of the disassembled first piston body, second piston body and third piston body of a hydraulic piston proposed by the utility model;

[0022] Figure 5 This is a partial structural diagram of a hydraulic piston buffer structure proposed by the utility model;

[0023] In the figure: 1. first piston body; 2. first threaded groove; 3. second piston body; 4. first sealing ring; 5. third piston body; 6. sealing groove; 7. second sealing ring; 8. first screw hole; 9. second screw hole; 10. third screw hole; 11. fourth screw hole; 12. first buffer seat; 13. groove; 14. spring; 15. buffer rod; 16. second buffer seat; 17. second threaded groove; 18. piston rod; 19. first screw; 20. second screw. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5The utility model provides a technical solution: a hydraulic piston comprises a first piston body 1, a first thread groove 2 is arranged on one side of the first piston body 1, a second piston body 3 is threadedly connected inside the first thread groove 2, a first sealing ring 4 is movably connected to the outer side of the first piston body 1, a third piston body 5 is threadedly connected inside the first thread groove 2, a sealing groove 6 is arranged on the outer side of the third piston body 5, a second sealing ring 7 is movably connected to the outer side of the sealing groove 6, a first screw hole 8 is symmetrically arranged on one side of the first piston body 1, a second screw hole 9 is symmetrically arranged on one side of the second piston body 3, a third screw hole 10 is symmetrically arranged on the other side of the first piston body 1, a fourth screw hole 11 is symmetrically arranged on one side of the third piston body 5, a buffer structure is arranged on one side of the second piston body 3, the first sealing ring 4 is first installed on the first piston body 1, then the second piston body 3 and the first piston body 1 are threadedly installed, the second sealing ring 7 is installed on the third piston body 5, then the third piston body 5 and the first piston body 1 are threadedly installed, and the first sealing ring 4 is firmly installed.

[0026] In the utility model, preferably, the buffer structure includes a first buffer seat 12, the first buffer seat 12 is fixedly connected to one side of the second piston body 3, a groove 13 is provided on one side of the first buffer seat 12, a spring 14 is fixedly connected to one side of the groove 13, the other end of the spring 14 is fixedly connected to a buffer rod 15, and the other end of the buffer rod 15 is fixedly connected to a second buffer seat 16. When the liquid is pressurized, it will first impact the second buffer seat 16, and the pressure will be applied to the buffer rod 15. The buffer rod 15 will drive the spring 14 to contract, thereby performing an effective buffer to prevent damage to the piston caused by long-term use.

[0027] In the present invention, preferably, a second thread groove 17 is provided on one side of the third piston body 5, and a piston rod 18 is threadedly connected inside the second thread groove.

[0028] In the utility model, preferably, the first threaded hole provided on one side of the first piston body 1 and the second screw hole 9 provided on one side of the second piston body 3 are located on the same vertical plane and are interconnected, and the third screw hole 10 provided on the other side of the first piston body 1 and the fourth threaded hole provided on one side of the third piston body are located on the same vertical plane and are interconnected.

[0029] In the utility model, preferably, the first piston body 1 and the second piston body 3 are connected by a first screw 19, and the first screw 19 is located inside the first screw hole 8 and the second screw hole 9, the first piston body 1 and the third piston body 5 are connected by a second screw 20, and the second screw 20 is located inside the third screw hole 10 and the fourth screw hole 11, the first piston body 1 and the second piston body 3 are fixed by the first screw 19, and the first piston body 1 and the third piston body 5 are fixed by the second screw 20, which can further tighten the first sealing ring 4 and the second sealing ring 7.

[0030] In the present invention, preferably, one end surface of the second piston body 3 is rounded.

[0031] In the present invention, preferably, the first piston body 1, the second piston body 3 and the third piston body 5 are all made of stainless steel.

[0032] In the present invention, preferably, a plurality of grooves 13 are provided.

[0033] The working principle and use process of the utility model are as follows: when in use, the first sealing ring 4 is first installed on the first piston body 1, and then the second piston body 3 is threadedly installed with the first piston body 1, and the second sealing ring 7 is installed on the third piston body 5, and then the third piston body 5 and the first piston body 1 are threadedly installed, and the first sealing ring 4 is firmly installed, the first piston body 1 and the second piston body 3 are fixed by the first screw hole 8 and the second screw hole 9 provided, and the first piston body 1 and the third piston body 5 are fixed by the second screw 20 through the third screw hole 10 and the fourth screw hole 11 provided, so that the first sealing ring 4 and the second sealing ring 7 can be more tightened.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic piston, comprising a first piston body (1), characterized in that: A first thread groove (2) is provided on one side of the first piston body (1), the first thread groove (2) is internally threadedly connected to a second piston body (3), a first sealing ring (4) is movably connected to the outer side of the first piston body (1), the first thread groove (2) is internally threadedly connected to a third piston body (5), a sealing groove (6) is provided on the outer side of the third piston body (5), a second sealing ring (7) is movably connected to the outer side of the sealing groove (6), a first screw hole (8) is symmetrically provided on one side of the first piston body (1), a second screw hole (9) is symmetrically provided on one side of the second piston body (3), a third screw hole (10) is symmetrically provided on the other side of the first piston body (1), a fourth screw hole (11) is symmetrically provided on one side of the third piston body (5), and a buffer structure is provided on one side of the second piston body (3).

2. A hydraulic piston according to claim 1, characterized in that: The buffer structure comprises a first buffer seat (12), the first buffer seat (12) is fixedly connected to one side of the second piston body (3), a groove (13) is provided on one side of the first buffer seat (12), a spring (14) is fixedly connected to one side of the groove (13), the other end of the spring (14) is fixedly connected to a buffer rod (15), and the other end of the buffer rod (15) is fixedly connected to a second buffer seat (16).

3. A hydraulic piston according to claim 1, characterized in that: A second thread groove (17) is provided on one side of the third piston body (5), and a piston rod (18) is threadedly connected inside the second thread groove.

4. A hydraulic piston according to claim 1, characterized in that: The first threaded hole provided on one side of the first piston body (1) and the second threaded hole (9) provided on one side of the second piston body (3) are located on the same vertical plane and are interconnected; the third threaded hole (10) provided on the other side of the first piston body (1) and the fourth threaded hole provided on one side of the third piston body are located on the same vertical plane and are interconnected.

5. A hydraulic piston according to claim 1, characterized in that: The first piston body (1) and the second piston body (3) are connected by a first screw (19), and the first screw (19) is located inside the first screw hole (8) and the second screw hole (9); the first piston body (1) and the third piston body (5) are connected by a second screw (20), and the second screw (20) is located inside the third screw hole (10) and the fourth screw hole (11).

6. A hydraulic piston according to claim 1, characterized in that: One end surface of the second piston body (3) is rounded.

7. A hydraulic piston according to claim 1, characterized in that: The first piston body (1), the second piston body (3) and the third piston body (5) are all made of stainless steel.

8. A hydraulic piston according to claim 2, characterized in that: A plurality of grooves (13) are provided.

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