CN213628249U - Pressure relief-proof large-flow oil cylinder - Google Patents
Pressure relief-proof large-flow oil cylinder Download PDFInfo
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- CN213628249U CN213628249U CN202022448378.1U CN202022448378U CN213628249U CN 213628249 U CN213628249 U CN 213628249U CN 202022448378 U CN202022448378 U CN 202022448378U CN 213628249 U CN213628249 U CN 213628249U
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Abstract
The utility model relates to the technical field of oil cylinders, in particular to a pressure relief prevention large-flow oil cylinder, which comprises a cylinder body; the cylinder body is provided with a movable cavity, a flow cavity and a control cavity; an oil cylinder shaft is movably arranged in the movable cavity; a piston is arranged between the control cavity and the flow cavity; a communication port is arranged between the flowing cavity and the movable cavity; the cylinder body is provided with an oil outlet; one end of the piston is provided with a convex part; the bulge part is provided with a first sealing ring; the cylinder body is provided with an oil control hole; the pressure relief prevention large-flow oil cylinder also comprises a gland connected with the cylinder body; the gland is provided with an oil inlet hole; the piston is provided with an oil duct in a penetrating manner; the oil passage is respectively communicated with the oil inlet hole and the communication port. The utility model discloses a set up first sealing washer between the bellying of piston and the inner wall in control chamber, can prevent to control the liquid leakage of intracavity to can guarantee that the piston will flow the chamber and seal with the activity chamber, thereby play the effect that prevents the pressure release.
Description
Technical Field
The utility model relates to a hydro-cylinder technical field, concretely relates to prevent large-traffic hydro-cylinder of pressure release.
Background
The cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion or oscillating motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.
The piston and the cylinder body need to be sealed when the existing oil cylinder is used, so that the oil pressure can be guaranteed, and the holding power of the oil cylinder when the oil cylinder extends out can be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prevent large-traffic hydro-cylinder of decompression to the above-mentioned among the prior art not enough.
The purpose of the utility model is realized through the following technical scheme: a large-flow oil cylinder capable of preventing pressure relief comprises a cylinder body; the cylinder body is provided with a movable cavity, a flow cavity and a control cavity; an oil cylinder shaft is movably arranged in the movable cavity; a piston is arranged between the control cavity and the flow cavity; a communication port is arranged between the flowing cavity and the movable cavity; one end of the piston is movably arranged in the control cavity; the other end of the piston protrudes into the flow cavity and blocks the liquid flow between the movable cavity and the flow cavity;
the cylinder body is provided with an oil outlet communicated with the flow cavity; one end of the piston is provided with a convex part; a first sealing ring is arranged between the boss and the inner wall of the control cavity; the cylinder body is provided with an oil control hole communicated with the control cavity; the pressure relief prevention large-flow oil cylinder also comprises a gland connected with the cylinder body; the gland is provided with an oil inlet hole; the piston is provided with an oil duct in a penetrating manner; the oil passage is respectively communicated with the oil inlet hole and the communication port.
The utility model discloses further set up to, be equipped with the second sealing washer between piston and the cylinder body.
The utility model discloses further set up to, the other end of piston is equipped with the third sealing washer.
The utility model discloses further set up as, prevent that the large-traffic hydro-cylinder of pressure release prevents that the large-traffic hydro-cylinder of pressure release still including the piece that resets that is used for making the piston reset.
The utility model is further arranged that the reset piece is a reset spring arranged in the oil duct; the reset spring is connected with the gland.
The utility model discloses further set up to, be equipped with the fourth sealing washer between gland and the cylinder body.
The utility model discloses further set up to, be equipped with the fifth sealing washer between hydro-cylinder axle and the activity chamber.
The utility model discloses further set up to, be equipped with the fixed orifices on the cylinder body.
The utility model has the advantages that: the utility model discloses a set up first sealing washer between the bellying of piston and the inner wall in control chamber, can prevent to control the liquid leakage of intracavity to can guarantee that the piston will flow the chamber and seal with the activity chamber, thereby play the effect that prevents the pressure release.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view of the cylinder shaft of the present invention as it extends;
FIG. 3 is a cross-sectional view of the cylinder shaft of the present invention from another perspective;
FIG. 4 is a cross-sectional view of the cylinder shaft of the present invention as it is retracted;
FIG. 5 is a cross-sectional view of the cylinder shaft of the present invention from another perspective when retracted;
wherein: 1. a cylinder body; 11. a movable cavity; 12. a flow chamber; 13. a control chamber; 14. a fixing hole; 2. a cylinder shaft; 3. a piston; 31. a boss portion; 32. an oil passage; 4. a communication port; 5. an oil outlet hole; 6. an oil control hole; 71. a first seal ring; 72. a second seal ring; 73. a third seal ring; 74. a fourth seal ring; 75. a fifth seal ring; 8. a gland; 81. an oil inlet hole; 9. a reset member.
Detailed Description
The invention will be further described with reference to the following examples.
As can be seen from fig. 1 to 5, the large flow cylinder with pressure relief prevention of the present embodiment includes a cylinder body 1; the cylinder body 1 is provided with a movable cavity 11, a flow cavity 12 and a control cavity 13; an oil cylinder shaft 2 is movably arranged in the movable cavity 11; a piston 3 is arranged between the control cavity 13 and the flow cavity 12; a communication port 4 is arranged between the flow cavity 12 and the movable cavity 11; one end of the piston 3 is movably arranged in the control cavity 13; the other end of the piston 3 protrudes into the flow cavity 12 and is used for blocking the liquid flow between the movable cavity 11 and the flow cavity 12;
the cylinder body 1 is provided with an oil outlet 5 communicated with the flow cavity 12; one end of the piston 3 is provided with a convex part 31; a first sealing ring 71 is arranged between the boss 31 and the inner wall of the control cavity 13; the cylinder body 1 is provided with an oil control hole 6 communicated with the control cavity 13; the pressure relief prevention large-flow oil cylinder also comprises a gland 8 connected with the cylinder body 1; the gland 8 is provided with an oil inlet hole 81; the piston 3 is provided with an oil passage 32 in a penetrating way; the oil passages 32 communicate with the oil inlet hole 81 and the communication port 4, respectively.
Specifically, the working principle of the large-flow oil cylinder with pressure relief prevention according to this embodiment is that, as shown in fig. 2 and 3, due to the action of the return spring, the piston 3 is located at the rightmost end of the control chamber 13 at this time, so that the piston 3 seals between the control chamber 13 and the flow chamber 12, at this time, high-pressure oil is injected from the oil inlet 81, and the high-pressure oil passes through the oil inlet 81, the control chamber 13, the oil passage 32 and the communication port 4 in sequence and then enters the movable chamber 11, so as to push the oil cylinder shaft 2 to extend outward, and the oil pressure is maintained after the oil cylinder shaft 2 extends, so that the oil cylinder keeps the extended state; when the cylinder shaft 2 needs to be retracted inwards, as shown in fig. 4 and 5, high-pressure oil is firstly injected from the oil control hole 6, enters the right side of the protruding portion 31 and pushes the protruding portion 31 to move leftwards, so that the piston 3 integrally moves leftwards, the control chamber 13 is communicated with the flow chamber 12, and at the moment, the oil in the movable chamber 11 is discharged from the oil outlet 5 after sequentially passing through the communication port 4 and the flow chamber 12, so that the cylinder shaft 2 is retracted inwards.
In this embodiment, by providing the first seal ring 71 between the protruding portion 31 of the piston 3 and the inner wall of the control chamber 13, the liquid leakage in the control chamber 13 can be prevented, so that the piston 3 can be ensured to seal the flow chamber 12 and the movable chamber 11, thereby preventing the pressure release.
In the large-flow oil cylinder for preventing pressure release described in this embodiment, a second sealing ring 72 is disposed between the piston 3 and the cylinder body 1. Specifically, the second seal ring 72 is provided to prevent oil from flowing between the control chamber 13 and the flow chamber 12, and further prevent pressure release.
In the large-flow oil cylinder for preventing pressure release described in this embodiment, the other end of the piston 3 is provided with a third sealing ring 73. Specifically, by providing the third seal ring 73, when the end of the piston 3 abuts against the flow chamber 12, the oil is prevented from flowing between the movable chamber 11 and the flow chamber 12, and the function of preventing pressure release is further performed.
The large-flow oil cylinder for preventing pressure release described in this embodiment further includes a reset piece 9 for resetting the piston 3. In the large-flow oil cylinder for preventing pressure release, the reset piece 9 is a reset spring arranged in the oil passage 32; the return spring is connected with the gland 8. The resetting of the piston 3 is facilitated by the above arrangement.
In the large-flow oil cylinder for preventing pressure release described in this embodiment, a fourth sealing ring 74 is disposed between the gland 8 and the cylinder body 1. By providing the fourth seal ring 74, the sealing performance between the gland 8 and the cylinder 1 can be enhanced, and the function of preventing pressure release can be further achieved.
In the large-flow oil cylinder with pressure relief prevention, a fifth sealing ring 75 is arranged between the oil cylinder shaft 2 and the movable cavity 11. By providing the fifth seal ring 75, the sealing performance between the cylinder shaft 2 and the movable chamber 11 can be enhanced, and the function of preventing pressure release can be further achieved.
According to the large-flow oil cylinder capable of preventing pressure release, the cylinder body 1 is provided with the fixing hole 14. The above arrangement facilitates fixing of the cylinder body 1.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a large-traffic hydro-cylinder of anti-pressure release which characterized in that: comprises a cylinder body (1); the cylinder body (1) is provided with a movable cavity (11), a flow cavity (12) and a control cavity (13); an oil cylinder shaft (2) is movably arranged in the movable cavity (11); a piston (3) is arranged between the control cavity (13) and the flow cavity (12); a communicating opening (4) is arranged between the flowing cavity (12) and the movable cavity (11); one end of the piston (3) is movably arranged in the control cavity (13); the other end of the piston (3) protrudes into the flow cavity (12) and blocks the liquid flow between the movable cavity (11) and the flow cavity (12);
the cylinder body (1) is provided with an oil outlet (5) communicated with the flow cavity (12); one end of the piston (3) is provided with a convex part (31); a first sealing ring (71) is arranged between the bulge part (31) and the inner wall of the control cavity (13); the cylinder body (1) is provided with an oil control hole (6) communicated with the control cavity (13); the pressure relief prevention large-flow oil cylinder also comprises a gland (8) connected with the cylinder body (1); the gland (8) is provided with an oil inlet hole (81); the piston (3) is provided with an oil passage (32) in a penetrating way; the oil passage (32) is respectively communicated with the oil inlet hole (81) and the communication port (4).
2. The pressure relief prevention large flow oil cylinder according to claim 1, characterized in that: and a second sealing ring (72) is arranged between the piston (3) and the cylinder body (1).
3. The pressure relief prevention large flow oil cylinder according to claim 1, characterized in that: and a third sealing ring (73) is arranged at the other end of the piston (3).
4. The pressure relief prevention large flow oil cylinder according to claim 1, characterized in that: the pressure relief preventing large-flow oil cylinder also comprises a resetting piece (9) for resetting the piston (3).
5. The pressure relief prevention large flow oil cylinder according to claim 4, characterized in that: the reset piece (9) is a reset spring arranged in the oil duct (32); the return spring is connected with the gland (8).
6. The pressure relief prevention large flow oil cylinder according to claim 1, characterized in that: and a fourth sealing ring (74) is arranged between the gland (8) and the cylinder body (1).
7. The pressure relief prevention large flow oil cylinder according to claim 1, characterized in that: and a fifth sealing ring (75) is arranged between the oil cylinder shaft (2) and the movable cavity (11).
8. The pressure relief prevention large flow oil cylinder according to claim 1, characterized in that: the cylinder body (1) is provided with a fixing hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022448378.1U CN213628249U (en) | 2020-10-29 | 2020-10-29 | Pressure relief-proof large-flow oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022448378.1U CN213628249U (en) | 2020-10-29 | 2020-10-29 | Pressure relief-proof large-flow oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213628249U true CN213628249U (en) | 2021-07-06 |
Family
ID=76625621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022448378.1U Active CN213628249U (en) | 2020-10-29 | 2020-10-29 | Pressure relief-proof large-flow oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213628249U (en) |
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2020
- 2020-10-29 CN CN202022448378.1U patent/CN213628249U/en active Active
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