CN216382076U - Anti-leakage hydraulic oil cylinder - Google Patents
Anti-leakage hydraulic oil cylinder Download PDFInfo
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- CN216382076U CN216382076U CN202123310197.3U CN202123310197U CN216382076U CN 216382076 U CN216382076 U CN 216382076U CN 202123310197 U CN202123310197 U CN 202123310197U CN 216382076 U CN216382076 U CN 216382076U
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Abstract
The utility model discloses a leakage-proof hydraulic oil cylinder, which relates to the technical field of hydraulic cylinders and comprises a cylinder body, a piston rod and a piston, wherein the piston rod is in sliding sleeve joint with the cylinder body, the piston is fixedly sleeve joint with the piston rod, first annular grooves are symmetrically formed in two sides of the piston, and a sealing part and a compensating part which are connected are sleeve joint with the outer ring of the piston. An object of the application is to provide a prevent leaking hydraulic cylinder, receive extruded compensating ring motion, make the weakening groove take place to deform and provide the extrusion support to the sealing ring, the compensating ring of opposite side receives the influence of suction to extrude the support to the sealing ring simultaneously, with this avoid producing the clearance that can circulate between piston and the cylinder body, avoid high-pressure oil to flow into the low-pressure area through the clearance between piston and the cylinder body, for the piston provides abundant effectual sealed effect, and then avoid hydraulic cylinder's telescopic link when reciprocating motion, hydraulic cylinder's inside pressure release, thereby cause adverse effect to the support of pneumatic cylinder, the safety in utilization of pneumatic cylinder has been improved.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a leakage-proof hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic actuating element which can convert hydraulic energy into mechanical energy and can make linear reciprocating motion, and is simple in structure and reliable in operation, when it is used for implementing reciprocating motion, it can remove 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.
When reciprocating motion is being done to current hydraulic cylinder's telescopic link, the sealing ring that the piston outer lane cover was established can't play effectual sealed effect, causes high-pressure oil to flow into the low-pressure area through the clearance between piston and the jar wall, causes hydraulic cylinder's inside pressure release, and then causes adverse effect to the support of pneumatic cylinder, has reduced the safety in utilization of pneumatic cylinder, consequently, this application provides one kind and prevents leaking hydraulic cylinder and satisfies the demand.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a prevent leaking hydraulic cylinder, receive extruded compensating ring motion, make the weakening groove take place to deform and provide the extrusion support to the sealing ring, the compensating ring of opposite side receives the influence of suction to extrude the support to the sealing ring simultaneously, with this avoid producing the clearance that can circulate between piston and the cylinder body, avoid high-pressure oil to flow into the low-pressure area through the clearance between piston and the cylinder body, for the piston provides abundant effectual sealed effect, and then avoid hydraulic cylinder's telescopic link when reciprocating motion, hydraulic cylinder's inside pressure release, thereby cause adverse effect to the support of pneumatic cylinder, the safety in utilization of pneumatic cylinder has been improved.
In order to achieve the above purpose, the present application provides the following technical solutions: a leakage-proof hydraulic oil cylinder comprises a cylinder body, a piston rod and a piston, wherein the piston rod is in sliding sleeve joint with the cylinder body, the piston is in fixed sleeve joint with the piston rod, first annular grooves are symmetrically formed in two sides of the piston, and a sealing part and a compensating part which are connected are in sleeve joint with the outer ring of the piston;
the sealing component comprises sealing rings which are fixedly sleeved in the two first annular grooves respectively, clamping grooves are formed in the inner wall of one side of each sealing ring, elastic metal sheets are symmetrically and fixedly installed on the two sides of the piston respectively, one ends, far away from the piston, of the elastic metal sheets are clamped with the clamping grooves, annular convex blocks are arranged on the side faces, far away from the piston, of one ends of the elastic metal sheets, second annular grooves are formed in one sides of the two elastic metal sheets, compensating rings are fixedly installed in the second annular grooves, and one ends of the compensating rings are abutted to the annular convex blocks;
the sealing component is used for sealing a gap between the outer side of the piston and the inner wall of the cylinder body, and the compensation component is used for providing reinforced compensation for the sealing effect of the sealing component.
Preferably, the sealing ring is tightly attached to the surface of the cylinder body contacted with the piston, and one side, close to the piston, of the elastic metal sheet is tightly attached to one side, far away from the piston, of the sealing ring.
Preferably, the annular convex block extends into the groove of the compensation ring in an inclined manner, two sides of the compensation ring are attached to the elastic metal sheet, a U-shaped weakening groove is formed in the bottom of the compensation ring, and the U-shaped weakening groove is located in the compensation ring.
Preferably, a third annular groove is formed in one side of the compensation ring, and the third annular groove is located at the bottom of the annular convex block.
Preferably, the compensating part includes fixed mounting and is in the bracing piece of elastic metal piece one side, the bracing piece is kept away from the one end fixed mounting of elastic metal piece has a plurality of stop collars, and is a plurality of the elastic metal pole is all overlapped to the inner circle of stop collar, the elastic metal pole comprises first annular pole, first arc pole and the second annular pole that is connected, first annular pole with the second annular pole all with third ring channel joint.
Preferably, the top end of the piston is fixedly provided with a first boss, the inner ring of the first boss is tightly attached to the outer side of the piston rod, and the outer side of the cylinder body is provided with a first oil port and a second oil port.
Preferably, a first fixing sleeve is fixedly mounted at the top end of the piston rod, the bottom end of the piston rod penetrates through and extends to the bottom of the piston, a second boss is arranged at the bottom of the cylinder body, and mounting holes are formed in one side of the first fixing sleeve and one side of the second boss.
In conclusion, the technical effects and advantages of the utility model are as follows:
1. the hydraulic cylinder has a reasonable structure, the compensation ring which is extruded moves to enable the weakening groove to deform to provide extrusion support for the sealing ring, and meanwhile, the compensation ring on the other side is extruded and supported by the influence of suction force to avoid a gap which can be circulated between the piston and the cylinder body, so that high-pressure oil is prevented from flowing into a low-pressure area through the gap between the piston and the cylinder body, a sufficient and effective sealing effect is provided for the piston, and further, when a telescopic rod of the hydraulic cylinder does reciprocating motion, the pressure inside the hydraulic cylinder is prevented from being released, the support of the hydraulic cylinder is further adversely affected, and the use safety of the hydraulic cylinder is improved;
2. according to the hydraulic cylinder, the elastic metal rod extrudes the third annular groove through the elasticity of the elastic metal rod, so that the compensation ring is supported through the third annular groove, the elastic metal sheet is extruded through the compensation ring, and the sealing ring is extruded and supported through the elastic metal sheet, so that multiple guarantees are provided for the tight fit of the sealing ring and the cylinder body, and the use safety of the hydraulic cylinder is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of a leak-proof hydraulic cylinder;
FIG. 2 is a schematic cross-sectional perspective view of the anti-leakage hydraulic oil cylinder;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of a cross-sectional perspective view of the assembly of the compensation ring and the elastic metal rod;
fig. 5 is an enlarged schematic view of B in fig. 4.
In the figure: 1. a cylinder body; 2. a piston rod; 3. a piston; 4. a resilient metal sheet; 5. a seal ring; 6. a compensation ring; 7. a support bar; 8. a limiting sleeve; 9. an elastic metal rod; 10. a first boss; 11. a first oil port; 12. a second oil port; 13. a first fixing sleeve; 14. a second boss; 15. and an annular projection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1-5, a leakage-proof hydraulic cylinder includes a cylinder body 1, a piston rod 2 slidably sleeved with the cylinder body 1, and a piston 3 fixedly sleeved with the piston rod 2, wherein two sides of the piston 3 are symmetrically provided with first annular grooves, and an outer ring of the piston 3 is sleeved with a sealing component and a compensating component which are connected;
the sealing part comprises sealing rings 5 which are fixedly sleeved in two first annular grooves respectively, the inner wall of one side of each sealing ring 5 is provided with a clamping groove, two sides of a piston 3 are symmetrically and fixedly provided with elastic metal sheets 4 respectively, each elastic metal sheet 4 is fixedly connected with the piston 3 through a bolt, the mounting mode is simple and effective, the reliability is high, one ends, far away from the piston 3, of the elastic metal sheets 4 are clamped with the clamping grooves, the sealing rings 5 are further fixed and supported, the sealing rings 5 are prevented from deforming in the moving process, the sealing effect is influenced, the side surfaces, far away from the piston 3, of one ends, far away from the piston 3, of the elastic metal sheets 4 are provided with annular convex blocks 15, one sides of the two elastic metal sheets 4 are provided with second annular grooves, compensating rings 6 are fixedly mounted in the second annular grooves, the elastic metal sheets 4 and the compensating rings 6 are designed in an integrated vulcanization mode, and the installation and the use of the compensating rings 6 are convenient, one end of the compensating ring 6 is abutted against the annular convex block 15, the contact surfaces of the sealing ring 5 and the cylinder body 1 and the piston 3 are tightly attached, one side of the elastic metal sheet 4 close to the piston 3 is tightly attached to one side of the sealing ring 5 far away from the piston 3, the annular convex block 15 extends obliquely into the groove of the compensating ring 6, the compensating ring 6 is convenient to extrude and support the elastic metal sheet 4 through the annular convex block 15 when being deformed under the influence of suction force, the suction force is effectively utilized through the structure, the structure is ingenious, two sides of the compensating ring 6 are both attached to the elastic metal sheet 4, the bottom of the compensating ring 6 is provided with a U-shaped weakening groove, and the U-shaped weakening groove is positioned in the compensating ring 6;
the sealing component is used for sealing a gap between the outer side of the piston 3 and the inner wall of the cylinder body 1, and the compensation component is used for providing reinforced compensation for the sealing effect of the sealing component;
when the hydraulic cylinder works, the piston 3 is extruded by the oil pressure at one side of the piston 3, at the moment, the compensation ring 6 at the same side is also extruded by the oil pressure, the compensation ring 6 is extruded to move and deform the weakening groove at the bottom of the compensation ring, the elastic metal sheet 4 is extruded, the sealing ring 5 is extruded and supported by the extrusion deformation of the elastic metal sheet 4, meanwhile, the compensation ring 6 at the other side is influenced by the suction force and collides with the annular convex block 15, the annular convex block 15 which is collided extrudes and supports the sealing ring 5, so that a gap which can be circulated between the piston 3 and the cylinder body 1 is avoided, high-pressure oil is prevented from flowing into a low-pressure area through the gap between the piston 3 and the cylinder body 1, a sufficient and effective sealing effect is provided for the piston 3, and further, when a telescopic rod of the hydraulic cylinder does reciprocating motion, the inside of the hydraulic cylinder is prevented, and adverse influence is caused on the support of the hydraulic cylinder, the use safety of the hydraulic cylinder is improved.
In this embodiment, a third annular groove is formed in one side of the compensation ring 6, the third annular groove is located at the bottom of the annular bump 15, the compensation component includes a support rod 7 fixedly installed on one side of the elastic metal sheet 4, a plurality of position-limiting sleeves 8 are fixedly installed at one end of the support rod 7 far away from the elastic metal sheet 4, elastic metal rods 9 are sleeved on inner rings of the position-limiting sleeves 8, each elastic metal rod 9 is composed of a first annular rod, a first arc-shaped rod and a second annular rod which are connected, and the first annular rod and the second annular rod are clamped with the third annular groove;
In this embodiment, the top fixed mounting of piston 3 has first boss 10, and the inner circle of first boss 10 is closely laminated with the outside of piston rod 2, and first hydraulic fluid port 11 and second hydraulic fluid port 12 have been seted up to the outside of cylinder body 1, makes through piston 3 and keeps the clearance between piston rod 2 and the cylinder body 1 all the time, when avoiding piston rod 2 to remove the limit stroke, sealing ring 5 seals first hydraulic fluid port 11, influences the normal use of first hydraulic fluid port 11, and then makes piston rod 2 unable reseing.
In this embodiment, the top fixed mounting of piston rod 2 has first fixed cover 13, and the bottom of piston rod 2 runs through and extends to the bottom of piston 3, and the bottom of cylinder body 1 is provided with second boss 14, and the mounting hole has all been seted up to one side of first fixed cover 13 and second boss 14, and it is spacing to install this hydraulic cylinder through the mounting hole, convenient and fast, and the installation effectiveness is high.
This practical theory of operation:
when the hydraulic cylinder works, the piston 3 is extruded by the oil pressure at one side of the piston 3, at the moment, the compensation ring 6 at the same side is also extruded by the oil pressure, the compensation ring 6 is extruded to move and deform the weakening groove at the bottom of the compensation ring, the elastic metal sheet 4 is extruded, the sealing ring 5 is extruded and supported by the extrusion deformation of the elastic metal sheet 4, meanwhile, the compensation ring 6 at the other side is influenced by the suction force and collides with the annular convex block 15, the annular convex block 15 which is collided extrudes and supports the sealing ring 5, so that a gap which can be circulated between the piston 3 and the cylinder body 1 is avoided, high-pressure oil is prevented from flowing into a low-pressure area through the gap between the piston 3 and the cylinder body 1, a sufficient and effective sealing effect is provided for the piston 3, and further, when a telescopic rod of the hydraulic cylinder does reciprocating motion, the inside of the hydraulic cylinder is prevented, and adverse influence is caused on the support of the hydraulic cylinder, the use safety of the hydraulic cylinder is improved;
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a prevent leaking hydraulic cylinder, including cylinder body (1), with cylinder body (1) slip piston rod (2) that cup joint, with piston rod (2) fixed piston (3) that cup joint, its characterized in that: first annular grooves are symmetrically formed in two sides of the piston (3), and a sealing component and a compensating component which are connected are sleeved on the outer ring of the piston (3);
the sealing component comprises sealing rings (5) which are fixedly sleeved in the two first annular grooves respectively, clamping grooves are formed in the inner wall of one side of each sealing ring (5), elastic metal sheets (4) are symmetrically and fixedly installed on the two sides of the piston (3) respectively, one ends, far away from the piston (3), of the elastic metal sheets (4) are clamped with the clamping grooves, annular convex blocks (15) are arranged on the side faces, far away from the piston (3), of one ends of the elastic metal sheets (4), second annular grooves are formed in one sides of the two elastic metal sheets (4), compensating rings (6) are fixedly installed in the second annular grooves, and one ends of the compensating rings (6) are abutted against the annular convex blocks (15);
the sealing component is used for sealing a gap between the outer side of the piston (3) and the inner wall of the cylinder body (1), and the compensation component is used for providing strengthened compensation for the sealing effect of the sealing component.
2. A leak-proof hydraulic ram as claimed in claim 1 wherein: sealing ring (5) with cylinder body (1) with the face that piston (3) contacted all closely laminates, elastic metal piece (4) are close to one side of piston (3) with sealing ring (5) are kept away from one side of piston (3) closely laminates.
3. A leak-proof hydraulic ram as claimed in claim 1 wherein: annular lug (15) slope extends to the recess of compensating ring (6) in, the both sides of compensating ring (6) all with elasticity sheetmetal (4) laminating, U type weakening groove has been seted up to the bottom of compensating ring (6), U type weakening groove is located in compensating ring (6).
4. A leak-proof hydraulic ram as claimed in claim 1 wherein: and a third annular groove is formed in one side of the compensation ring (6), and is positioned at the bottom of the annular convex block (15).
5. A leak-proof hydraulic ram according to claim 4 wherein: the compensating part includes fixed mounting and is in bracing piece (7) of elastic metal piece (4) one side, bracing piece (7) are kept away from the one end fixed mounting of elastic metal piece (4) has a plurality of stop collar (8), and is a plurality of elastic metal pole (9) are all established to the inner circle of stop collar (8) cover, elastic metal pole (9) comprise first annular rod, first arc pole and the second annular rod that is connected, first annular rod with the second annular rod all with third ring channel joint.
6. A leak-proof hydraulic ram as claimed in claim 1 wherein: the top end of the piston (3) is fixedly provided with a first boss (10), the inner ring of the first boss (10) is tightly attached to the outer side of the piston rod (2), and the outer side of the cylinder body (1) is provided with a first oil port (11) and a second oil port (12).
7. A leak-proof hydraulic ram as claimed in claim 1 wherein: the top fixed mounting of piston rod (2) has first fixed cover (13), the bottom of piston rod (2) runs through and extends to the bottom of piston (3), the bottom of cylinder body (1) is provided with second boss (14), first fixed cover (13) with the mounting hole has all been seted up to one side of second boss (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123310197.3U CN216382076U (en) | 2021-12-27 | 2021-12-27 | Anti-leakage hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123310197.3U CN216382076U (en) | 2021-12-27 | 2021-12-27 | Anti-leakage hydraulic oil cylinder |
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| Publication Number | Publication Date |
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| CN216382076U true CN216382076U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123310197.3U Active CN216382076U (en) | 2021-12-27 | 2021-12-27 | Anti-leakage hydraulic oil cylinder |
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| CN (1) | CN216382076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498618A (en) * | 2023-04-06 | 2023-07-28 | 华中科技大学 | Underwater high-reliability balanced unlocking cylinder |
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2021
- 2021-12-27 CN CN202123310197.3U patent/CN216382076U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498618A (en) * | 2023-04-06 | 2023-07-28 | 华中科技大学 | Underwater high-reliability balanced unlocking cylinder |
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