CN215370418U - Sealing device for hydraulic cylinder and hydraulic cylinder comprising same - Google Patents
Sealing device for hydraulic cylinder and hydraulic cylinder comprising same Download PDFInfo
- Publication number
- CN215370418U CN215370418U CN202120485032.0U CN202120485032U CN215370418U CN 215370418 U CN215370418 U CN 215370418U CN 202120485032 U CN202120485032 U CN 202120485032U CN 215370418 U CN215370418 U CN 215370418U
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- Prior art keywords
- hydraulic cylinder
- sealing
- shaft hole
- seal
- ring
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 127
- 238000009434 installation Methods 0.000 claims abstract description 23
- 239000000428 dust Substances 0.000 claims abstract description 15
- 230000001154 acute effect Effects 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a sealing device for a hydraulic cylinder and the hydraulic cylinder with the sealing device, and relates to the technical field of hydraulic cylinders. The sealing device for the hydraulic cylinder comprises a sealing sleeve, a piston rod and a sealing sleeve, wherein the sealing sleeve is arranged at the front end of the hydraulic cylinder; the Z-shaped dust ring is arranged on the sealing installation groove at one end of the shaft hole, which is far away from the hydraulic cylinder; the Stent seal is arranged on the seal mounting groove at one end of the shaft hole close to the hydraulic cylinder; the Y-shaped sealing ring is arranged on the sealing installation groove in the center of the shaft hole; and at least three guide belts arranged on the rest of the sealing installation grooves on the shaft hole. The utility model can increase the tightness of the hydraulic cylinder by the sealing sleeve, avoid the phenomena of untight sealing and hydraulic oil leakage caused by the abrasion of the sealing ring after long-term use, and prolong the service life of the hydraulic cylinder.
Description
Technical Field
The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to a sealing device for a hydraulic cylinder and the hydraulic cylinder with the sealing device.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging 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 existing hydraulic cylinder of the engineering machinery is influenced by heat radiation of a tundish and molten steel in the casting process, so that when the hydraulic cylinder is used, the phenomenon of poor sealing caused by abrasion of a sealing ring can occur due to long-term back-and-forth sliding of a piston, the risk of safety accidents caused by oil leakage is increased, and the sealing ring needs to be frequently replaced. Therefore, it is desirable to provide a sealing device for a hydraulic cylinder to solve the above-mentioned drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sealing device for a hydraulic cylinder and the hydraulic cylinder with the sealing device, which are used for solving the technical problems that in the prior art, when the hydraulic cylinder is used, the sealing ring is not tightly sealed due to the fact that a piston slides back and forth for a long time, the sealing ring is abraded, the risk of safety accidents caused by oil leakage is increased, and the sealing ring needs to be frequently replaced.
In order to solve the above technical problem, the present invention provides a sealing device for a hydraulic cylinder, including:
the sealing sleeve is arranged at the front end of the hydraulic cylinder, a shaft hole matched with the piston rod is formed in the inner side of the sealing sleeve, and a plurality of sealing installation grooves are formed in the shaft hole;
the Z-shaped dust ring is arranged on the sealing installation groove at one end of the shaft hole, which is far away from the hydraulic cylinder;
the Stent seal is arranged on the seal mounting groove at one end of the shaft hole close to the hydraulic cylinder;
the Y-shaped sealing ring is arranged on the sealing installation groove in the center of the shaft hole; and
and the at least three guide belts are arranged on the rest sealing installation grooves on the shaft hole.
In one example of the present invention, five guide strips are installed in the sealing sleeve.
In one example of the utility model, two guide strips in the sealing sleeve are arranged between the Y-shaped sealing ring and the Z-shaped dust ring.
In one example of the utility model, two of the guide strips in the gland are disposed between the steiner and the Y seal.
In one example of the present invention, one of the guide strips of the seal cartridge is disposed in the seal mounting groove on a side of the steiner proximate the cylinder.
In one example of the present invention, the first acute angle and the second acute angle of the Z-shaped dust ring are 35 ° to 45 °.
The utility model also provides a hydraulic cylinder, and the hydraulic cylinder is provided with any one of the sealing devices for the hydraulic cylinder.
According to the sealing device for the hydraulic cylinder and the hydraulic cylinder comprising the sealing device, the sealing sleeve is arranged at the front end of the hydraulic cylinder, the Z-shaped dustproof ring is arranged at one end, far away from the hydraulic cylinder, of the sealing sleeve, the Stent seal 3 is arranged at one end, close to the hydraulic cylinder, of the sealing sleeve, and the Y-shaped sealing ring is arranged at the center of the sealing sleeve, so that the sealing performance of the sealing device is improved, and hydraulic oil in the hydraulic cylinder is prevented from leaking when a piston rod moves; and the guide ring is arranged in the rest sealing installation groove in the sealing sleeve to increase the radial load of the sealing device and prevent the piston rod from being damaged by sealing when moving. Therefore, the sealing device provided by the utility model can be used for avoiding oil leakage of the hydraulic cylinder, ensuring the durability of the sealing device and effectively prolonging the service life of the hydraulic cylinder.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a sealing device for a hydraulic cylinder according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1 sealing sleeve
11 axle hole
12 sealing installation groove
2Z-shaped dustproof ring
3 ste seal
4Y-shaped sealing ring
5 guide belt
51 first guide belt
52 second guide belt
53 third guide belt
54 fourth guide belt
55 fifth guide belt
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1, fig. 1 shows a schematic structural view of the sealing device for a hydraulic cylinder.
Referring to fig. 1 again, the present invention provides a sealing device for a hydraulic cylinder and a hydraulic cylinder including the sealing device, which are used for solving the technical problems in the prior art that when the hydraulic cylinder is used, the sealing ring is worn due to the long-term back-and-forth sliding of the piston, so that the sealing is not tight, the risk of safety accidents caused by oil leakage is increased, and the sealing ring needs to be frequently replaced.
As shown in fig. 1, the sealing device for a hydraulic cylinder of the present invention may include a sealing sleeve 1, a Z-shaped dust ring 2, a steckel 3, a Y-shaped sealing ring 4, and at least three guide belts 5.
As shown in fig. 1, the sealing sleeve 1 is disposed on the hydraulic cylinder, the sealing sleeve 1 is located at the front end of the hydraulic cylinder and serves as a connection port between a piston rod of the hydraulic cylinder and the cylinder, a shaft hole 11 matched with the piston rod of the hydraulic cylinder is disposed inside the sealing sleeve 1, a plurality of sealing installation grooves 12 are disposed inside the shaft hole 11, and the sealing installation grooves 12 are recessed inward on the inner wall of the sealing sleeve 1. The plurality of sealing installation grooves 12 are used for installing a plurality of sealing strips in the sealing sleeve 1 so as to increase the tightness of the sealing device for the hydraulic cylinder. Wherein, the mounting mode of above-mentioned seal cover 1 at the pneumatic cylinder front end can be any suitable mounting mode, for example: in an embodiment of the present invention, the sealing sleeve 1 is fixed to the hydraulic cylinder by casting, and the above mounting method effectively ensures the firmness of the sealing sleeve 1 on the hydraulic cylinder.
As shown in fig. 1, the Z-shaped dust ring 2 is disposed in a seal mounting groove 12 at an end of the shaft hole 11 away from the hydraulic cylinder. In an embodiment of the present invention, the Z-shaped dust ring 2 is disposed in a seal mounting groove 12 of the shaft hole 11 farthest from the hydraulic cylinder, and the Z-shaped dust ring 2 is disposed to prevent foreign objects from entering the hydraulic cylinder sealing device to damage the hydraulic cylinder sealing device or the hydraulic cylinder.
As shown in fig. 1, the steckel seal 3 is arranged in the seal installation groove 12 at one end of the shaft hole 11 close to the hydraulic cylinder, and the arrangement of the steckel seal 3 can increase the tightness of the seal sleeve 1 on the hydraulic cylinder and prevent the hydraulic oil from leaking out of the seal sleeve 1 when the piston rod reciprocates.
As shown in fig. 1, the Y-shaped sealing ring 4 is disposed in the sealing installation groove 12 at the central position of the shaft hole 11, and the Y-shaped sealing ring 4 is additionally installed to perform secondary sealing on hydraulic oil in the hydraulic cylinder in the sealing sleeve 1, thereby effectively increasing the sealing performance of the sealing sleeve 1.
As shown in fig. 1, the plurality of guide belts 5, specifically, for example, at least three guide belts 5, are disposed in the remaining seal installation grooves 12 of the shaft hole 11 except for the space occupied by the Z-type dust seal 2, the steckel 3, and the Y-type seal 4. The arrangement of the at least three guide belts 5 can increase the radial load of the sealing sleeve 1 to overcome the radial stress caused by the reciprocating motion of the piston rod in the sealing sleeve 1, and avoid the damage of the seal and the scratch of the piston rod.
As shown in fig. 1, in an embodiment of the present invention, five guide strips 5 are installed in the sealing boot 1, and the five guide strips 5 are installed in the remaining sealing installation grooves 12 of the shaft hole 11 except for the space occupied by the Z-type dust ring 2, the steckel 3, and the Y-type sealing ring 4.
As shown in fig. 1, in the present embodiment, two guide strips 5 of the sealing sleeve 1 are disposed in two sealing installation grooves 12 between the Y-shaped sealing ring 4 and the Z-shaped dust ring 2 in the shaft hole 11.
As shown in fig. 1, in the present embodiment, two guide strips 5 of the sealing sleeve 1 are disposed in two sealing installation grooves 12 between the Y-shaped sealing ring 4 and the steckel 3 in the shaft hole 11.
As shown in fig. 1, in the present embodiment, a guide strip 5 of the gland 1 is disposed in a gland mounting groove 12 of the shaft hole 11 on the side of the steiner 3 close to the cylinder.
It can be seen that the five guide strips 5 in the above embodiment are uniformly arranged in the sealing sleeve 1, specifically, between the Z-shaped dust ring 2, the steckel 3 and the Y-shaped sealing ring 4 in the sealing sleeve 1, and the arrangement of the guide strips 5 can ensure that each position of the sealing sleeve 1 has the same radial load, thereby avoiding the local damage of the sealing sleeve 1 due to different bearing capacities and the oil leakage phenomenon due to the local damage.
In an embodiment of the present invention, the first acute angle and the second acute angle of the Z-shaped dust ring are 35 ° to 45 °.
The utility model also provides a hydraulic cylinder, and the hydraulic cylinder is provided with the sealing device for the hydraulic cylinder.
In summary, in the sealing device for the hydraulic cylinder, the sealing sleeve 1 is arranged at the front end of the hydraulic cylinder, the Z-shaped dust ring 2 is arranged at one end, far away from the hydraulic cylinder, of the sealing sleeve 1, the steckel 3 is arranged at one end, close to the hydraulic cylinder, of the sealing sleeve 1, and the Y-shaped sealing ring 4 is arranged in the center of the sealing sleeve 1, so that the sealing performance of the sealing device is improved, and hydraulic oil in the hydraulic cylinder is prevented from leaking out when a piston rod moves; and the guide ring is arranged in the residual sealing installation groove 12 in the sealing sleeve 1, so that the radial load of the sealing device is increased, the piston rod is prevented from being damaged by sealing during movement, and the service life of the hydraulic cylinder is effectively prolonged.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A sealing device for a hydraulic cylinder, comprising:
the sealing sleeve is arranged at the front end of the hydraulic cylinder, a shaft hole matched with the piston rod is formed in the inner side of the sealing sleeve, and a plurality of sealing installation grooves are formed in the shaft hole;
the Z-shaped dust ring is arranged on the sealing installation groove at one end of the shaft hole, which is far away from the hydraulic cylinder;
the Stent seal is arranged on the seal mounting groove at one end of the shaft hole close to the hydraulic cylinder;
the Y-shaped sealing ring is arranged on the sealing installation groove in the center of the shaft hole; and
and the at least three guide belts are arranged on the rest sealing installation grooves on the shaft hole.
2. The hydraulic cylinder sealing device of claim 1, wherein five of the guide strips are installed in the seal sleeve.
3. The hydraulic cylinder seal of claim 2, wherein two of said guide strips of said gland are disposed between said Y-ring and said Z-ring.
4. The hydraulic cylinder seal assembly of claim 2 wherein said gland has two of said guide strips disposed between said steiner and said Y-seal.
5. The hydraulic cylinder seal assembly of claim 2 wherein said gland includes one of said guide strips disposed in said seal mounting groove on a side of said steiner adjacent said hydraulic cylinder.
6. The hydraulic cylinder sealing device of claim 1, wherein the first acute angle and the second acute angle of the Z-shaped wiper ring are 35 ° to 45 °.
7. A hydraulic cylinder characterized in that the hydraulic cylinder is equipped with the sealing device for a hydraulic cylinder according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120485032.0U CN215370418U (en) | 2021-03-05 | 2021-03-05 | Sealing device for hydraulic cylinder and hydraulic cylinder comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120485032.0U CN215370418U (en) | 2021-03-05 | 2021-03-05 | Sealing device for hydraulic cylinder and hydraulic cylinder comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370418U true CN215370418U (en) | 2021-12-31 |
Family
ID=79623803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120485032.0U Expired - Fee Related CN215370418U (en) | 2021-03-05 | 2021-03-05 | Sealing device for hydraulic cylinder and hydraulic cylinder comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370418U (en) |
-
2021
- 2021-03-05 CN CN202120485032.0U patent/CN215370418U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |