A hydraulic component anti-leakage sealing structure

Abstract

The present invention relates to the technical field of hydraulic components, and discloses a hydraulic component anti-leakage sealing structure, including a hydraulic cylinder body, a top shell fixedly connected to the left side of the hydraulic cylinder body, and a base fixedly connected to the right side of the hydraulic cylinder body, so that the hydraulic cylinder can work stably, and the top of the base and the top shell are fixedly connected to a sealing component, so that the sealing can be achieved when fixedly connected to the outside. The present invention opens a check valve and an automatic valve to supplement the inert gas inside the supplementary air pipe, and enters the airbag inside the piston head through the air intake pipe. The inside of the airbag begins to expand. At the same time, due to the limitation of the piston head, the airbag can only expand outward to squeeze the compensating rubber ring and squeeze the sealing rubber ring at the same time, so that the sealing rubber ring can always maintain a close fit with the inner wall of the hydraulic cylinder body to prevent the generation of gaps that cause leakage of hydraulic oil.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic components, in particular to a hydraulic component anti-leakage sealing structure. Background Art

[0002] The hydraulic cylinder is the actuator in the hydraulic component system. It is a conversion device that converts hydraulic energy into mechanical energy. The hydraulic cylinder realizes reciprocating motion. The hydraulic cylinder transfers the pressure oil to the piston rod through the oil chamber, so that the piston rod drives the hydraulic cylinder to realize reciprocating motion.

[0003] However, hydraulic cylinders on the market are now equipped with sealing rings inside and the sealing rings are attached to the inside of the hydraulic cylinder. Whenever the sealing performance of the sealing ring is reduced, the sealing ring needs to be tightened to compensate for the wear of the sealing ring and prevent leakage from the hydraulic cylinder seal. However, it is difficult to compensate for the wear of the seal of the hydraulic cylinder in time. When the hydraulic cylinder transmits power, a large amount of pressure oil will reciprocate with the piston rod in the inner cavity of the piston rod. A large amount of pressure oil will also leak along with the movement of the inlet and outlet of the hydraulic cylinder, causing damage to the hydraulic cylinder.

[0004] In view of the above problems, a hydraulic component anti-leakage sealing structure is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic element leakage prevention sealing structure, which solves the problem that in the background technology, the hydraulic cylinder is equipped with a sealing ring and the sealing ring is attached to the inner side of the hydraulic cylinder. Whenever the sealing performance of the sealing ring is reduced, the sealing ring needs to be compressed to compensate for the wear of the sealing ring to prevent leakage at the seal of the hydraulic cylinder. However, it is difficult to compensate for the wear of the seal of the hydraulic cylinder in time, and when the hydraulic cylinder transmits power, a large amount of pressure oil will reciprocate with the piston rod in the inner cavity of the piston rod, and a large amount of pressure oil will also leak along with the movement of the inlet and outlet of the hydraulic cylinder, causing damage to the hydraulic cylinder.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic element anti-leakage sealing structure, comprising a hydraulic cylinder body, a top shell is fixedly connected to the left side of the hydraulic cylinder body, and a base is fixedly connected to the right side of the hydraulic cylinder body, so that the hydraulic cylinder can work stably; a sealing component, the top of the base and the top shell are fixedly connected to the sealing component, so that the sealing performance when fixedly connected with the outside can be achieved; a piston component, the piston component is slidably connected to the inside of the hydraulic cylinder body, the piston component includes a piston head and a sealing rubber ring, the piston head is slidably connected to the inside of the hydraulic cylinder body, the outer diameter of the piston head is provided with a sealing rubber ring, the inside of the sealing rubber ring is provided with a compensating rubber ring that is close to the sealing rubber ring, the inner diameter of the compensating rubber ring is provided with an air bag, the right top of the air bag passes through and is fixedly connected with an intake pipe, and the intake pipe is fixedly connected to the piston head, the top of the intake pipe is fixedly connected with an automatic valve, and the automatic valve is fixedly connected to the piston head, so that the sealing rubber ring can be pressed so that the sealing rubber ring can be close to the inner wall of the hydraulic cylinder body;

[0007] As a further description of the above technical solution: a sealing ring is passed through and fixedly connected to the right side of the top of the hydraulic cylinder body, a supplementary air pipe is fixedly connected to the inside of the sealing ring, the outer diameter bottom of the supplementary air pipe passes through the hydraulic cylinder body and is fixedly connected to a connecting ring, and the connecting ring cooperates with the bottom automatic valve, so that the air inside the airbag can be supplemented with air;

[0008] As a further description of the above technical solution: a check valve is fixedly connected to the top of the outer diameter of the supplementary air pipe to prevent internal gas from overflowing during the gas supplementation project;

[0009] As a further description of the above technical solution: the sealing assembly includes a connecting seat and a connecting bolt, the base and the top of the top shell are fixedly connected with the connecting seat, the inside of the connecting seat is threadedly connected with the connecting bolt, the top of the connecting bolt is provided with an oil pipe, the outer diameter of the oil pipe is provided with a sealing nut, and the sealing nut is threadedly connected to the top of the connecting bolt, so that the connection is tighter and more closed;

[0010] As a further description of the above technical solution: the connection seat is provided with a thread groove inside, and the thread groove is threadedly connected with the connection bolt, so that the bottom interface fits tightly to prevent leakage;

[0011] As a further description of the above technical solution: a sealing ring is fixedly connected to the top of the connecting bolt, and the sealing ring cooperates with the bottom of the oil pipe, so that the oil pipe and the connecting bolt seal the internal gap when connected;

[0012] As a further description of the above technical solution: a hydraulic rod is fixedly connected to the left side of the piston head, and the hydraulic rod is slidably connected to the hydraulic cylinder body and the top shell, so that the hydraulic cylinder body can work normally;

[0013] As a further description of the above technical solution: the left side of the hydraulic rod is fixedly connected with a connecting tooth plate, and the connecting tooth plate is slidably connected to the left side of the top shell, so that it can be connected and used with different devices;

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a hydraulic component anti-leakage sealing structure, which opens a check valve and an automatic valve to supplement inert gas in the air pipe, and enters the airbag inside the piston head through the air inlet pipe. The inside of the airbag begins to expand and at the same time, due to the limitation of the piston head, the airbag can only expand outward to squeeze the compensating rubber ring and the sealing rubber ring at the same time, so that the sealing rubber ring can always maintain a close fit with the inner wall of the hydraulic cylinder body to prevent the formation of gaps that cause leakage of hydraulic oil.

[0016] 2. The present invention provides a hydraulic component anti-leakage sealing structure, which seals the oil inlet and outlet ports through the cooperation of the connecting seat and connecting bolts on the top shell and the base, and seals and fills the oil pipe when sealing with the connecting bolt through the sealing ring on the top of the connecting bolt. At the same time, the sealing nut is tightened to prevent leakage from the oil inlet and outlet ports when the hydraulic cylinder is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the piston assembly of the present invention;

[0021] Figure 5 For the present invention Figure 3 A magnified image of point A;

[0022] Figure 6 For the present invention Figure 4 A magnified view of point B;

[0023] Figure 7 It is a cross-sectional structural diagram of the piston assembly of the present invention;

[0024] Figure 8 It is a structural diagram of the sealing component of the present invention.

[0025] In the figure: 1. hydraulic cylinder body; 2. top shell; 3. base; 4. sealing assembly; 401. connecting seat; 402. connecting bolt; 403. sealing ring; 404. oil pipe; 405. sealing nut; 406. threaded groove; 5. hydraulic rod; 6. piston assembly; 601. piston head; 602. sealing rubber ring; 603. compensation rubber ring; 604. air bag; 605. intake pipe; 606. automatic valve; 607. connecting ring; 608. supplementary air pipe; 609. sealing ring; 610. check valve; 7. connecting gear plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0028] Combination Figure 1 , a hydraulic element leakage prevention sealing structure, including: a hydraulic cylinder body 1, a top shell 2 is fixedly connected to the left side of the hydraulic cylinder body 1, and a base 3 is fixedly connected to the right side of the hydraulic cylinder body 1, so that the hydraulic cylinder can work stably, a hydraulic rod 5 is fixedly connected to the left side of the piston head 601, and the hydraulic rod 5 is slidably connected to the hydraulic cylinder body 1 and the top shell 2, and a connecting tooth plate 7 is fixedly connected to the left side of the hydraulic rod 5, and the connecting tooth plate 7 is slidably connected to the left side of the top shell 2, so that it can be connected and used in different equipment, and at the same time, the connection between the inlet and outlet oil ports of the hydraulic cylinder body 1 and the external pump is made through the sealing component 4 to generate working power for the hydraulic cylinder body 1, and the connection is also sealed to prevent leakage.

[0029] Combination Figure 2 and Figure 3, piston assembly 6, the piston assembly 6 is slidably connected inside the hydraulic cylinder body 1, the piston assembly 6 includes a piston head 601 and a sealing rubber ring 602, the piston head 601 is slidably connected inside the hydraulic cylinder body 1, the outer diameter of the piston head 601 is provided with a sealing rubber ring 602, the sealing rubber ring 602 is provided with a compensation rubber ring 603 that is close to the sealing rubber ring 602, and the inner diameter of the compensation rubber ring 603 is provided with an airbag 604, which enters the airbag 604 inside the piston head 601 through the intake pipe 605, so that the airbag 604 expands inside. At the same time, due to the limitation of the piston head 601, the airbag 604 can only expand outwardly, squeezing the compensation rubber ring 603 so that the compensation rubber ring 603 also presses the sealing rubber ring 60 outward. 2 is squeezed so that the sealing rubber ring 602 can always maintain a close fit with the inner wall of the hydraulic cylinder body 1. An air intake pipe 605 is passed through and fixedly connected to the top of the right side of the airbag 604, and the air intake pipe 605 is fixedly connected to the piston head 601. An automatic valve 606 is fixedly connected to the top of the air intake pipe 605 to prevent gaps from causing leakage of hydraulic oil. At the same time, the check valve 610 is used to prevent the internal gas from leaking to the outside when replenishing gas, thereby ensuring the sealing inside the equipment and replenishing the wear of the sealing rubber ring 602. The automatic valve 606 is fixedly connected to the piston head 601, so that the sealing rubber ring 602 can be squeezed so that the sealing rubber ring 602 can be tightly attached to the inner wall of the hydraulic cylinder body 1.

[0030] Combination Figure 3 and Figure 4 A sealing ring 609 passes through and is fixedly connected to the top right side of the hydraulic cylinder body 1, and a supplementary air pipe 608 is fixedly connected to the inside of the sealing ring 609. The outer diameter bottom of the supplementary air pipe 608 passes through the hydraulic cylinder body 1 and is fixedly connected to a connecting ring 607, and the connecting ring 607 cooperates with the bottom automatic valve 606. By opening the check valve 610 and the automatic valve 606, the inert gas is supplemented to the inside of the supplementary air pipe 608, so that the air bag 604 can be supplemented with air. The outer diameter top of the supplementary air pipe 608 is fixedly connected to a check valve 610 to prevent the internal gas from escaping during the air replenishment project.

[0031] Combination Figure 5 and Figure 6, sealing component 4, the top of the base 3 and the top shell 2 are fixedly connected with the sealing component 4, so that the sealing performance when fixedly connected with the outside can be achieved, the sealing component 4 includes a connecting seat 401 and a connecting bolt 402, the top of the base 3 and the top shell 2 are fixedly connected with the connecting seat 401, the interior of the connecting seat 401 is threadedly connected with the connecting bolt 402, and the oil inlet and outlet are sealed by the cooperation of the connecting seat 401 and the connecting bolt 402 on the top of the top shell 2 and the base 3, and the oil pipe 404 is sealed and filled when it is sealed with the connecting bolt 402 through the sealing ring 403 on the top of the connecting bolt 402, and the oil pipe 404 is provided at the top of the connecting bolt 402, and the outer diameter of the oil pipe 404 is provided with a sealing nut 405, and the sealing nut 405 is threadedly connected to the top of the connecting bolt 402, so that the oil inlet and outlet are more tightly and closed when connected with the external oil pump to prevent leakage.

[0032] Combination Figure 7 and Figure 8 , the interior of the connecting seat 401 is provided with a threaded groove 406, and the threaded groove 406 is threadedly connected to the connecting bolt 402, and the oil pipe 404 is sealed and filled when the connecting bolt 402 is sealed through the sealing ring 403 on the top of the connecting bolt 402, and at the same time, the sealing nut 405 is clamped and fitted to prevent leakage from the inlet and outlet of the hydraulic cylinder when the hydraulic cylinder is working, so that the bottom interface is tightly fitted to prevent leakage, and the top of the connecting bolt 402 is fixedly connected with a sealing ring 403, and the sealing ring 403 is matched with the bottom of the oil pipe 404, so that the internal gap of the oil pipe 404 and the connecting bolt 402 is sealed when connected.

[0033] Working principle: first, by opening the check valve 610 and the automatic valve 606, the inert gas is added to the supplementary air pipe 608, and enters the airbag 604 inside the piston head 601 through the air inlet pipe 605, so that the airbag 604 expands. At the same time, due to the limit of the piston head 601, the airbag 604 can only expand outward, which squeezes the compensation rubber ring 603, so that the compensation rubber ring 603 also squeezes the sealing rubber ring 602 outward, so that the sealing rubber ring 602 can always maintain a close fit with the inner wall of the hydraulic cylinder body 1, preventing the formation of gaps and causing The hydraulic oil leaks, and the check valve 610 is used to prevent the internal gas from leaking to the outside when replenishing the gas, thereby ensuring the sealing inside the equipment and replenishing the wear of the sealing rubber ring 602. The inlet and outlet oil ports are sealed by the cooperation of the connecting seat 401 and the connecting bolt 402 on the top of the top shell 2 and the base 3. The sealing ring 403 on the top of the connecting bolt 402 allows the oil pipe 404 to be sealed and filled when the connecting bolt 402 is sealed. At the same time, the sealing nut 405 is clamped and fitted to prevent leakage at the inlet and outlet oil ports when the hydraulic cylinder is working.

[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 component anti-leakage sealing structure, characterized in that: include: A hydraulic cylinder body (1), wherein the left side of the hydraulic cylinder body (1) is fixedly connected to a top shell (2), and the right side of the hydraulic cylinder body (1) is fixedly connected to a base (3), so that the hydraulic cylinder can work stably; A sealing component (4), wherein the base (3) and the top of the top shell (2) are both fixedly connected with the sealing component (4), so as to ensure sealing performance when fixedly connected to the outside; The piston assembly (6) is slidably connected to the interior of the hydraulic cylinder body (1), and the piston assembly (6) comprises a piston head (601) and a sealing rubber ring (602). The piston head (601) is slidably connected to the interior of the hydraulic cylinder body (1), and the outer diameter of the piston head (601) is provided with a sealing rubber ring (602). The interior of the sealing rubber ring (602) is provided with a compensating rubber ring (603) that is tightly attached to the sealing rubber ring (602). An air bag (604) is provided at the inner diameter, an air intake pipe (605) is passed through and fixedly connected to the top right side of the air bag (604), and the air intake pipe (605) is fixedly connected to the piston head (601), an automatic valve (606) is fixedly connected to the top of the air intake pipe (605), and the automatic valve (606) is fixedly connected to the piston head (601), so that the sealing rubber ring (602) can be pressed so that the sealing rubber ring (602) can be tightly attached to the inner wall of the hydraulic cylinder body (1); A sealing ring (609) is passed through and fixedly connected to the right side of the top of the hydraulic cylinder body (1); a supplementary air pipe (608) is fixedly connected to the inside of the sealing ring (609); the outer diameter bottom of the supplementary air pipe (608) passes through the hydraulic cylinder body (1) and is fixedly connected to a connecting ring (607); and the connecting ring (607) cooperates with the bottom automatic valve (606) so that air can be supplemented inside the airbag (604); A check valve (610) is fixedly connected to the top of the outer diameter of the supplementary air pipe (608) to prevent internal gas from overflowing during the gas replenishment process; The sealing assembly (4) comprises a connecting seat (401) and a connecting bolt (402); the base (3) and the top of the top shell (2) are both fixedly connected to the connecting seat (401); the interior of the connecting seat (401) is both threadedly connected to the connecting bolt (402); an oil pipe (404) is provided at the top of the connecting bolt (402); a sealing nut (405) is provided on the outer diameter of the oil pipe (404); and the sealing nut (405) is threadedly connected to the top of the connecting bolt (402), so that the connection is tighter and more sealed.

2. The anti-leakage sealing structure of a hydraulic component according to claim 1, characterized in that: The connection seat (401) is provided with a threaded groove (406) inside, and the threaded groove (406) is threadedly connected to the connection bolt (402), so that the bottom interface fits tightly to prevent leakage.

3. The anti-leakage sealing structure of a hydraulic component according to claim 2, characterized in that: A sealing ring (403) is fixedly connected to the top of the connecting bolt (402), and the sealing ring (403) cooperates with the bottom of the oil pipe (404), so that the internal gap between the oil pipe (404) and the connecting bolt (402) is sealed when they are connected.

4. The anti-leakage sealing structure of a hydraulic component according to claim 1, characterized in that: The left side of the piston head (601) is fixedly connected to a hydraulic rod (5), and the hydraulic rod (5) is slidably connected to the hydraulic cylinder body (1) and the top shell (2), so that the hydraulic cylinder body (1) can work normally.

5. The anti-leakage sealing structure of a hydraulic component according to claim 4, characterized in that: The left side of the hydraulic rod (5) is fixedly connected to a connecting tooth plate (7), and the connecting tooth plate (7) is slidably connected to the left side of the top shell (2), so that it can be connected to different devices for use.

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