CN203847476U - Piston cylinder - Google Patents
Piston cylinder Download PDFInfo
- Publication number
- CN203847476U CN203847476U CN201420258204.0U CN201420258204U CN203847476U CN 203847476 U CN203847476 U CN 203847476U CN 201420258204 U CN201420258204 U CN 201420258204U CN 203847476 U CN203847476 U CN 203847476U
- Authority
- CN
- China
- Prior art keywords
- piston
- seal
- piston rod
- cylinder body
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to the technical field of piston manufacturing, in particular to a piston cylinder. The piston cylinder comprises a cylinder body, a piston rod and a piston, wherein the piston rod and the piston are placed in the cylinder body. A first sealing groove is formed in the front end of the piston rod, a fixing sleeve with a U-shaped cross section is arranged in the first sealing groove, a first sealing ring is arranged between the fixing sleeve and the piston rod, and a second sealing ring is arranged on one side of the fixing sleeve. A middle sealing groove is formed in the middle of the piston cylinder, the front end of the middle sealing groove is provided with a compression sealing ring, a limiting sleeve is arranged on one side of the compression sealing ring, a third sealing ring is arranged in the limiting sleeve, a first clamping sleeve is arranged on one side of the third sealing ring, a second clamping sleeve is arranged at the tail end of the cylinder body and a spring is arranged between the first clamping sleeve and the second clamping sleeve. The piston cylinder is simple in structure, lower in cost, convenient to install, and capable of improving the abrasion resistance of the sealing rings. The overall weight of the piston cylinder can be reduced.
Description
Technical field
The utility model relates to piston manufacturing technology field, relates in particular to a kind of piston cylinder.
Background technique
Horizontal piston cylinder, due to its piston and inboard wall of cylinder block sliding contact always, causes piston and inboard wall of cylinder block all very easily to produce wearing and tearing, therefore rubber seal is housed between the piston of horizontal oil cylinder and inboard wall of cylinder block conventionally and reduces wear.But the large-size horizontal piston cylinder that big machinery adopts is because volume is larger, need to be equipped with larger piston, therefore common rubber seal just can not be used on large-size horizontal piston cylinder, and common large-size horizontal piston cylinder adopts iron-based piston ring to be used as Sealing.But the weight of iron-based piston ring is larger, can reach 9kg, installation is inconvenience very, and when it moves with piston, resistance is larger, and it is larger after the long-term use of iron-based piston ring, self to wear and tear, and it is expensive, changes and has just improved user cost.
Model utility content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of piston cylinder is provided, and resistance is little, high leak tightness.
The utility model for achieving the above object, by the following technical solutions: a kind of piston cylinder, comprise cylinder body, be placed in piston rod and the piston of cylinder body, it is characterized in that: the front end of described piston rod is provided with the first seal groove, in described the first seal groove, be provided with the fixed cover that cross section takes the shape of the letter U, described fixed cover is bolted on cylinder body, between described fixed cover and piston rod, be provided with the first seal ring, the outer end of described fixed cover is fixed by locking steel loop and described cylinder body, one side of described fixed cover is provided with the second seal ring, described the second seal ring and described piston rod closely cooperate, the middle part of described piston cylinder is provided with intermediate seal groove, the front end of described intermediate seal groove is provided with compresses seal, one side of described compresses seal is provided with stop collar, in described stop collar, be provided with the 3rd seal ring, described the 3rd seal ring and described piston rod closely cooperate, described the 3rd seal ring one side is provided with the first cutting ferrule, and the end of described cylinder body is provided with the second cutting ferrule, between described the first cutting ferrule and the second cutting ferrule, is provided with spring.
Preferably, between described the second seal groove and compresses seal, be provided with oil filling pipeline.Can between piston rod and cylinder body, inject lubricant oil by this oil filling pipeline, reduce frictional force between the two.
Preferably, the cross section of described compresses seal takes the shape of the letter U.What in the situation that this compresses seal is shunk, can contact with piston rod is tightr, improves the sealing between piston rod and cylinder body.
Preferably, between the front end of described piston rod and described cylinder body, be provided with sealing cover.Outside by piston rod and cylinder body seal.
The beneficial effects of the utility model are: the utility model is simple in structure, and cost is less, easy for installation, have improved the wearability of seal ring, and can reduce the overall weight of piston cylinder.Design multi-sealedly, improved the sealing shape between piston rod and cylinder body, spring can make compresses seal and the 3rd seal ring coordinate closely with piston rod in compression shape body all the time, has greatly improved the sealing of piston cylinder.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment, as shown in Figure 1, a kind of piston cylinder, comprise cylinder body 1, be placed in piston rod 2 and the piston 3 of cylinder body, the front end of described piston rod is provided with the first seal groove 4, in described the first seal groove, be provided with the fixed cover 5 that cross section takes the shape of the letter U, described fixed cover is bolted on cylinder body, between described fixed cover and piston rod, be provided with the first seal ring 6, the outer end of described fixed cover is fixed with described cylinder body by locking steel loop 7, locking steel loop is locked fixed cover by the restraining groove on cylinder body, fixed cover plays the effect of the seal ring of restricted internal, one side of fixed cover is provided with the second seal ring 8, the second seal ring is a small-sized seal ring, play the effect of first sealing, described the second seal ring and described piston rod closely cooperate, the middle part of described piston cylinder is provided with intermediate seal groove 9, and this intermediate seal groove is the annulus of a long strip, is provided with compresses seal 10 at the front end of described intermediate seal groove, and the cross section of described compresses seal takes the shape of the letter U.What in the situation that this compresses seal is shunk, can contact with piston rod is tightr, one side of described compresses seal is provided with stop collar 11, stop collar and intermediate seal groove are in axial sliding connection, in described stop collar, be provided with the 3rd seal ring 12, described the 3rd seal ring and described piston rod closely cooperate, described the 3rd seal ring one side is provided with the first cutting ferrule 13, the end of described cylinder body is provided with the second cutting ferrule 14, between described the first cutting ferrule and the second cutting ferrule, be provided with spring 15, spring-compressed the first cutting ferrule, the first cutting ferrule compression the 3rd seal ring and stop collar, the 3rd seal ring and stop collar compression compresses seal, thereby reach high sealing effect.Between described the second seal groove and compresses seal, be provided with oil filling pipeline 16.Can between piston rod and cylinder body, inject lubricant oil by this oil filling pipeline, reduce frictional force between the two.Improve the sealing between piston rod and cylinder body.Between the front end of described piston rod and described cylinder body, be provided with sealing cover 17.Outside by piston rod and cylinder body seal.
The utility model is simple in structure, and cost is less, easy for installation, has improved the wearability of seal ring, and can reduce the overall weight of piston cylinder.Design multi-sealedly, improved the sealing shape between piston rod and cylinder body, spring can make compresses seal and the 3rd seal ring coordinate closely with piston rod in compression shape body all the time, has greatly improved the sealing of piston cylinder.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a piston cylinder, comprise cylinder body, be placed in piston rod and the piston of cylinder body, it is characterized in that: the front end of described piston rod is provided with the first seal groove, in described the first seal groove, be provided with the fixed cover that cross section takes the shape of the letter U, described fixed cover is bolted on cylinder body, between described fixed cover and piston rod, be provided with the first seal ring, the outer end of described fixed cover is fixed by locking steel loop and described cylinder body, one side of described fixed cover is provided with the second seal ring, and described the second seal ring and described piston rod closely cooperate; The middle part of described piston cylinder is provided with intermediate seal groove, the front end of described intermediate seal groove is provided with compresses seal, one side of described compresses seal is provided with stop collar, in described stop collar, be provided with the 3rd seal ring, described the 3rd seal ring and described piston rod closely cooperate, described the 3rd seal ring one side is provided with the first cutting ferrule, and the end of described cylinder body is provided with the second cutting ferrule, between described the first cutting ferrule and the second cutting ferrule, is provided with spring.
2. piston cylinder according to claim 1, is characterized in that: between described the second seal groove and compresses seal, be provided with oil filling pipeline.
3. piston cylinder according to claim 1, is characterized in that: the cross section of described compresses seal takes the shape of the letter U.
4. piston cylinder according to claim 1, is characterized in that: between the front end of described piston rod and described cylinder body, be provided with sealing cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258204.0U CN203847476U (en) | 2014-05-20 | 2014-05-20 | Piston cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258204.0U CN203847476U (en) | 2014-05-20 | 2014-05-20 | Piston cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847476U true CN203847476U (en) | 2014-09-24 |
Family
ID=51560501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420258204.0U Expired - Fee Related CN203847476U (en) | 2014-05-20 | 2014-05-20 | Piston cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847476U (en) |
-
2014
- 2014-05-20 CN CN201420258204.0U patent/CN203847476U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |