CN212717489U - Self-sealing hydraulic oil cylinder - Google Patents
Self-sealing hydraulic oil cylinder Download PDFInfo
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- CN212717489U CN212717489U CN202021721599.5U CN202021721599U CN212717489U CN 212717489 U CN212717489 U CN 212717489U CN 202021721599 U CN202021721599 U CN 202021721599U CN 212717489 U CN212717489 U CN 212717489U
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Abstract
The utility model relates to an engineering machine tool technical field, more specifically the self sealss hydraulic cylinder that says so. Comprises a hydraulic cylinder and a self-sealing device. Beneficial technical effect does the utility model discloses a sealed effectual, the high temperature resistance of sealing washer is good to can realize the self sealss, avoid the pneumatic cylinder during operation for a long time, make sealing rubber ring ageing, lead to equipment oil leak phenomenon. Lower cylinder cap fixed connection is at the right-hand member of cylinder body, upper cylinder cap fixed connection is at the left end of cylinder body, the right-hand member fixed connection of piston rod is on the piston, piston sliding connection is in the cylinder body, dustproof sealing washer fixed connection is on the upper cylinder cap, axle is with sealing washer fixed connection in the upper cylinder cap, hole is with sealing washer fixed connection on the piston, buffering sealing washer fixed connection is at the right-hand member of piston rod, piston sealing washer fixed connection is at the right-hand member of piston rod and sets up the left side at buffering sealing washer, rubber pad fixed connection is at the left end of lower cylinder cap, first oil inlet pipe and second oil inlet pipe all fixed connection and intercommunication.
Description
Technical Field
The utility model relates to an engineering machine tool technical field, more specifically the self sealss hydraulic cylinder that says so.
Background
Current patent is a hydraulic cylinder of CN201721921359.8, this utility model belongs to engineering machine tool technical field, concretely relates to hydraulic cylinder. It includes cylinder cap and cylinder bottom, and is located cylinder body between cylinder cap and the cylinder bottom, the inside of cylinder body is provided with the piston, piston fixedly connected with piston rod, the piston rod front end passes the cylinder cap and extends to the cylinder cap outside, the cylinder cap includes a body coupling's preceding tip and back tip, preceding tip is located the cylinder body is outside, the back tip extends to in the cylinder body, and with cylinder body inner wall clearance fit, the back tip with be provided with the thread between the cylinder body inner wall, the outer wall is close to on the back tip preceding tip department is provided with first sealing washer, the cylinder body outer wall is provided with fastening fastener, fastening fastener both ends all are provided with fastening hook, two fastening hook imbeds respectively preceding tip and cylinder bottom. The utility model discloses a hydraulic cylinder have firm structure, good leakproofness. But the sealing position of the device can not resist high temperature, the sealing performance is poor, and the self-sealing effect can not be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a self sealss hydraulic cylinder, its beneficial effect does the utility model discloses a sealed effectual, the high temperature resistance performance of sealing washer is good to can realize the self sealss, avoid the long-time during operation of pneumatic cylinder, make the sealing rubber ring ageing, lead to equipment oil leak phenomenon.
The purpose of the utility model is realized through the following technical scheme:
a self-sealing hydraulic oil cylinder comprises a hydraulic cylinder and a self-sealing device; the hydraulic cylinder comprises a lower cylinder cover, a cylinder body, a piston rod, an upper cylinder cover, a dustproof sealing ring, a shaft sealing ring, a piston sealing ring, a buffer sealing ring, a hole sealing ring, a rubber pad, a first oil inlet pipe and a second oil inlet pipe; the lower cylinder cover is fixedly connected to the right end of the cylinder body, the upper cylinder cover is fixedly connected to the left end of the cylinder body, the dustproof sealing ring and the shaft sealing ring are attached to the piston rod, the piston rod is slidably connected to the inner end face of the upper cylinder cover, the right end of the piston rod is fixedly connected to the piston, the piston is slidably connected to the cylinder body, the dustproof sealing ring is fixedly connected to the upper cylinder cover, the shaft sealing ring is fixedly connected to the upper cylinder cover, the hole sealing ring is fixedly connected to the piston, the buffer sealing ring is fixedly connected to the right end of the piston rod, the piston sealing ring is fixedly connected to the right end of the piston rod and arranged on the left side of the buffer sealing ring, the piston sealing ring and the buffer sealing ring are attached to the inner end face of the piston, the rubber pad is fixedly connected to the left end of the lower cylinder cover, the first oil inlet pipe and the second oil inlet;
the self-sealing device comprises a sealing piece, a sealing rubber ring, a gap and an oil inlet; the left end fixed connection of sealing rubber ring is on the sealing member, and the right-hand member and the laminating of lower cylinder cap of sealing rubber ring, the inner fixed connection of sealing rubber ring are on the rubber pad, and oil inlet and space intercommunication, sealing member upper end are equipped with the through-hole, and sealing member sliding connection is in the cylinder body, and the oil inlet communicates with the inside of cylinder body.
The sealing element is provided with a plurality of oil inlets.
The shaft sealing ring is a YX type shaft sealing ring.
The hole sealing ring is a YX type hole sealing ring.
The utility model relates to a self sealss hydraulic cylinder's beneficial effect does:
the utility model relates to a self sealss hydraulic cylinder, the utility model discloses a sealed effectual, the high temperature resistance of sealing washer can be good to can realize the self sealss, avoid the long-time during operation of pneumatic cylinder, make sealed rubber ring ageing, lead to equipment oil leak phenomenon.
Drawings
FIG. 1 is a schematic structural view of a self-sealing hydraulic cylinder according to the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of a self-sealing hydraulic cylinder according to the present invention;
FIG. 3 is a schematic cross-sectional view of the hydraulic cylinder;
fig. 4 is a schematic cross-sectional view of the self-sealing device.
In the figure: a hydraulic cylinder 1; 1-1 of a lower cylinder cover; 1-2 of cylinder body; a piston rod 1-3; 1-4 parts of an upper cylinder cover; 1-5 parts of a dustproof sealing ring; 1-6 shaft seal rings; 1-7 of a piston; 1-8 parts of a piston sealing ring; 1-9 parts of a buffer sealing ring; 1-10 parts of sealing ring for hole; 1-11 parts of rubber pad; 1-12 parts of a first oil inlet pipe; 1-13 parts of a second oil inlet pipe; a self-sealing device 2; a seal 2-1; 2-2 of a sealing rubber ring; 2-3 of gaps; and an oil inlet 2-4.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The present invention will be described in further detail with reference to the accompanying fig. 1-4 and the specific implementation method.
The first embodiment is as follows:
a self-sealing hydraulic oil cylinder comprises a hydraulic cylinder 1 and a self-sealing device 2; the hydraulic cylinder 1 comprises a lower cylinder cover 1-1, a cylinder body 1-2, a piston rod 1-3, an upper cylinder cover 1-4, a dustproof sealing ring 1-5, a shaft sealing ring 1-6, a piston 1-7, a piston sealing ring 1-8, a buffer sealing ring 1-9, a hole sealing ring 1-10, a rubber pad 1-11, a first oil inlet pipe 1-12 and a second oil inlet pipe 1-13; a lower cylinder cover 1-1 is fixedly connected with the right end of a cylinder body 1-2, an upper cylinder cover 1-4 is fixedly connected with the left end of the cylinder body 1-2, a dustproof sealing ring 1-5 and a shaft sealing ring 1-6 are attached to a piston rod 1-3, the piston rod 1-3 is slidably connected with the inner end surface of the upper cylinder cover 1-4, the right end of the piston rod 1-3 is fixedly connected with a piston 1-7, the piston 1-7 is slidably connected in the cylinder body 1-2, the dustproof sealing ring 1-5 is fixedly connected with the upper cylinder cover 1-4, the shaft sealing ring 1-6 is fixedly connected with the upper cylinder cover 1-4, a hole is fixedly connected with the piston 1-7 by a sealing ring 1-10, a buffer sealing ring 1-9 is fixedly connected with the right end of the piston rod 1-3, and a piston sealing ring 1-8 is fixedly The left side of the ring 1-9, the piston seal ring 1-8 and the buffer seal ring 1-9 are attached to the inner end face of the piston 1-7, the rubber pad 1-11 is fixedly connected to the left end of the lower cylinder cover 1-1, the first oil inlet pipe 1-12 and the second oil inlet pipe 1-13 are fixedly connected and communicated with the cylinder body 1-2, the first oil inlet pipe 1-12 is positioned between the piston 1-7 and the upper cylinder cover 1-4, and the second oil inlet pipe 1-13 is positioned between the piston 1-7 and the lower cylinder cover 1-1; hydraulic oil enters the cylinder body 1-2 through the first oil inlet pipe 1-12 and the second oil inlet pipe 1-13, the equipment starts to work, the piston 1-7 is made to reciprocate left and right to drive the piston rod 1-3 to reciprocate left and right, the dustproof sealing ring 1-5 prevents dust from entering the cylinder body 1-2, the sealing ring 1-6 for the shaft prevents the hydraulic oil from flowing out of the equipment, and the buffer sealing ring 1-9 plays a role in protecting the piston rod 1-3 when the pressure is increased.
The self-sealing device 2 comprises a sealing piece 2-1, a sealing rubber ring 2-2, a gap 2-3 and an oil inlet 2-4; the left end of a sealing rubber ring 2-2 is fixedly connected to a sealing element 2-1, the right end of the sealing rubber ring 2-2 is attached to a lower cylinder cover 1-1, the inner end of the sealing rubber ring 2-2 is fixedly connected to a rubber pad 1-11, an oil inlet 2-4 is communicated with a gap 2-3, the upper end of the sealing element 2-1 is provided with a through hole, the sealing element 2-1 is connected in a cylinder body 1-2 in a sliding mode, the oil inlet 2-4 is communicated with the inside of the cylinder body 1-2, the outer end of the sealing rubber ring 2-2 is extruded through the through hole by hydraulic oil entering from a second oil inlet pipe 1-13, part of the hydraulic oil enters the gap 2-3 through the oil inlet 2-4, the contact areas of the outer end and the inner end of the sealing rubber ring 2-2, the sealing rubber ring 2-2 is extruded by the self pressure of the hydraulic oil, so that the self-sealing effect is achieved.
The second embodiment is as follows:
in the following description of the present embodiment, referring to fig. 1-4, the upper end surface of the rubber seal 2-2 is attached to the cylinder block 1-2, so that the hydraulic oil can be completely contacted with the outer end surface of the rubber seal 2-2.
The third concrete implementation mode:
in the following, referring to fig. 1-4, the present embodiment is described, and the sealing element 2-1 is provided with a plurality of oil inlets 2-4, so as to increase the contact area between the inner end surface of the sealing rubber ring 2-2 and the hydraulic oil.
The fourth concrete implementation mode:
the present embodiment is described below with reference to fig. 1 to 4, wherein the shaft seal rings 1 to 6 are YX type shaft seal rings, so as to prevent the piston rods 1 to 3 from reciprocating to generate high temperature, thereby reducing the sealing effect and causing oil leakage.
The fifth concrete implementation mode:
the present embodiment is described below with reference to fig. 1 to 4, wherein the bore seal rings 1 to 10 are YX-type bore seal rings, so as to prevent the pistons 1 to 7 from reciprocating to generate high temperature, thereby reducing the sealing effect and causing oil leakage.
The utility model relates to a self sealss hydraulic cylinder's theory of operation: when the device is used, hydraulic oil enters the cylinder body 1-2 through the first oil inlet pipe 1-12 and the second oil inlet pipe 1-13, equipment starts to work, the piston 1-7 is enabled to reciprocate left and right to drive the piston rod 1-3 to reciprocate left and right, the dust-proof sealing ring prevents dust from entering the cylinder body 1-2, the shaft sealing ring prevents the hydraulic oil from flowing out of the equipment, the buffer sealing ring plays a role of protecting the piston rod 1-3 when pressure is increased, the outer end of the sealing rubber ring 2-2 is extruded through the through hole by the hydraulic oil entering from the second oil inlet pipe 1-13, part of the hydraulic oil enters the gap 2-3 through the oil inlet 2-4, the contact area between the outer end and the inner end of the sealing rubber ring 2-2 and the hydraulic oil is different, the sealing rubber ring 2-2 is extruded by utilizing the area difference and depending on the self pressure of the, the self-sealing effect is achieved.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (5)
1. A self-sealing hydraulic oil cylinder comprises a hydraulic cylinder (1) and a self-sealing device (2); the method is characterized in that: the hydraulic cylinder (1) comprises a lower cylinder cover (1-1), a cylinder body (1-2), a piston rod (1-3), an upper cylinder cover (1-4), a dustproof sealing ring (1-5), a shaft sealing ring (1-6), a piston (1-7), a piston sealing ring (1-8), a buffer sealing ring (1-9), a hole sealing ring (1-10), a rubber pad (1-11), a first oil inlet pipe (1-12) and a second oil inlet pipe (1-13); the lower cylinder cover (1-1) is fixedly connected with the right end of the cylinder body (1-2), the upper cylinder cover (1-4) is fixedly connected with the left end of the cylinder body (1-2), the dustproof sealing ring (1-5) and the shaft sealing ring (1-6) are attached to the piston rod (1-3), the piston rod (1-3) is slidably connected with the inner end face of the upper cylinder cover (1-4), the right end of the piston rod (1-3) is fixedly connected with the piston (1-7), the piston (1-7) is slidably connected in the cylinder body (1-2), the dustproof sealing ring (1-5) is fixedly connected on the upper cylinder cover (1-4), the shaft sealing ring (1-6) is fixedly connected in the upper cylinder cover (1-4), the hole sealing ring (1-10) is fixedly connected on the piston (1-7), the buffer sealing ring (1-9) is fixedly connected to the right end of the piston rod (1-3), the piston sealing ring (1-8) is fixedly connected to the right end of the piston rod (1-3) and arranged on the left side of the buffer sealing ring (1-9), the piston sealing ring (1-8) is attached to the inner end face of the piston (1-7), the rubber pad (1-11) is fixedly connected to the left end of the lower cylinder cover (1-1), the first oil inlet pipe (1-12) and the second oil inlet pipe (1-13) are fixedly connected and communicated with the cylinder body (1-2), the first oil inlet pipe (1-12) is located between the piston (1-7) and the upper cylinder cover (1-4), and the second oil inlet pipe (1-13) is located between the piston (1-7) and the lower cylinder cover (1-1);
the self-sealing device (2) comprises a sealing element (2-1), a sealing rubber ring (2-2), a gap (2-3) and an oil inlet (2-4); the left end of the sealing rubber ring (2-2) is fixedly connected to the sealing element (2-1), the right end of the sealing rubber ring (2-2) is attached to the lower cylinder cover (1-1), the inner end of the sealing rubber ring (2-2) is fixedly connected to the rubber pad (1-11), the oil inlet (2-4) is communicated with the gap (2-3), a through hole is formed in the upper end of the sealing element (2-1), the sealing element (2-1) is connected to the inside of the cylinder body (1-2) in a sliding mode, and the oil inlet (2-4) is communicated with the inside of the cylinder body (1-2).
2. A self-sealing hydraulic ram according to claim 1 wherein: the upper end surface of the sealing rubber ring (2-2) is attached to the cylinder body (1-2).
3. A self-sealing hydraulic ram according to claim 2 wherein: the sealing element (2-1) is provided with a plurality of oil inlets (2-4).
4. A self-sealing hydraulic ram according to claim 3 wherein: the shaft seal rings (1-6) adopt YX type shaft seal rings.
5. A self-sealing hydraulic ram according to claim 4 wherein: the hole sealing rings (1-10) adopt YX type hole sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021721599.5U CN212717489U (en) | 2020-08-18 | 2020-08-18 | Self-sealing hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021721599.5U CN212717489U (en) | 2020-08-18 | 2020-08-18 | Self-sealing hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717489U true CN212717489U (en) | 2021-03-16 |
Family
ID=74919157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021721599.5U Active CN212717489U (en) | 2020-08-18 | 2020-08-18 | Self-sealing hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717489U (en) |
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2020
- 2020-08-18 CN CN202021721599.5U patent/CN212717489U/en active Active
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