CN206958215U - A kind of power takeoff - Google Patents
A kind of power takeoff Download PDFInfo
- Publication number
- CN206958215U CN206958215U CN201720898996.1U CN201720898996U CN206958215U CN 206958215 U CN206958215 U CN 206958215U CN 201720898996 U CN201720898996 U CN 201720898996U CN 206958215 U CN206958215 U CN 206958215U
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- power takeoff
- piston
- seal
- seal ring
- type seal
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Abstract
It the utility model is related to automotive transmission technical field, specifically disclose a kind of power takeoff applied to automotive transmission, including at least piston and cylinder, the plunger shaft matched with piston is provided with the cylinder, the cylinder is provided with the air admission hole communicated with plunger shaft, it is provided with sealing structure between the outer wall of the piston and the inwall of plunger shaft, the sealing structure comprises at least y-type seal ring, and the opening of the y-type seal ring is towards air admission hole side.Power takeoff of the present utility model, sealing structure uses y-type seal ring, and the opening of y-type seal ring is towards air inlet side, when power takeoff works, by inlet charge, y-type seal ring can be deformed due to the effect by air pressure to both sides, air pressure is bigger, deformation is bigger, and tension force is also bigger, so as to better tightness.In addition, setting O-ring seal in side of the y-type seal ring away from air inlet, the sealing property of sealing structure is further enhanced, while the gear oil for having completely cut off right side enters.
Description
Technical field
It the utility model is related to automotive transmission technical field, and in particular to a kind of power taking applied to automotive transmission
Device.
Background technology
At present, because the positioning of vehicle is different, many vehicles need additional power to export, the application of power takeoff be exactly in order to
Meet this demand.Because practical function operating mode is different, power takeoff is also classified into working long hours（Such as sprinkling truck）With short time work
Make（Such as dumper）.The power takeoff that works long hours is higher to the sealing requirements of power takeoff cylinder, and currently used power takeoff leads to
Cross O-ring seal and realize sealing, it is limited for the power takeoff to work long hours, its service life.Therefore, it is necessary to taken to existing
The sealing structure of power device optimizes.
The content of the invention
The technical problems to be solved in the utility model is to provide a kind of power takeoff structure of sealing structure optimization, existing to solve
There is power takeoff in technology to work long hours state lower life-span shorter technological deficiency.
In order to solve the above-mentioned technical problem, the technical scheme that the utility model is provided is as follows：A kind of power takeoff, is comprised at least
Piston and cylinder, the cylinder is interior to be provided with the plunger shaft matched with piston, and the cylinder is provided with the air inlet communicated with plunger shaft
Hole, is provided with sealing structure between the outer wall of the piston and the inwall of plunger shaft, the sealing structure seals including at least Y types
Circle, and the opening of the y-type seal ring is towards air admission hole side.
A kind of preferred embodiment, the piston are provided with seal groove one, and the y-type seal ring is installed on the seal groove
In one.
A kind of preferred embodiment, the sealing structure also include O-ring seal, and the piston is provided with seal groove two,
The seal groove two is located at side of the seal groove one away from air inlet, and the O-ring seal is installed in the seal groove two.
A kind of preferred embodiment, the y-type seal ring and O-ring seal are rubber seal.
Power takeoff of the present utility model, sealing structure use y-type seal ring, and the opening of y-type seal ring is towards air inlet
Side, when power takeoff works, by inlet charge, y-type seal ring because the effect by air pressure can deform to both sides, get over by air pressure
Greatly, deformation is bigger, and tension force is also bigger, so as to better tightness.In addition, O is set in side of the y-type seal ring away from air inlet
Type sealing ring, further enhances the sealing property of sealing structure, while the gear oil for having completely cut off right side enters.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment piston；
Fig. 2 is the assembling structure schematic diagram of cylinder and piston in the present embodiment power takeoff.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in Figure 1 and Figure 2, a kind of power takeoff of the present embodiment, including at least piston 1 and cylinder 7, wherein set in cylinder 7
There is the plunger shaft 8 matched with piston 1, and cylinder 1 is provided with the air admission hole 9 communicated with plunger shaft 8, the outer wall of the piston 1
Sealing structure is provided between the inwall of plunger shaft 8.
The improvement maximum as the present embodiment, wherein sealing structure comprise at least y-type seal ring 4, and concrete structure is piston
1 is provided with seal groove 1, and the y-type seal ring 4 is installed in the seal groove 1.Also, the court of opening 5 of y-type seal ring 4
To the side of air admission hole 9.The structure is advantageous in that when power takeoff works, by inlet charge, y-type seal ring is due to by air pressure
Effect can be deformed to both sides, air pressure is bigger, and deformation is bigger, and tension force is also bigger, so as to better tightness；Even if power takeoff connects
Continuous to work long hours, the stability of sealing structure is preferable, and service life is longer.
A kind of preferred embodiment, the sealing structure also include O-ring seal 6, and wherein piston 1 is provided with seal groove two
3, the seal groove 23 is located at side of the seal groove 1 away from air inlet 9, and the O-ring seal is installed on the seal groove two
It is interior.In the structure, the collocation y-type seal ring 4 of O-ring seal 6 forms dual-seal, and sealing property is more preferable so that power takeoff makes
It is longer with the life-span, and O-ring seal 6 has completely cut off the gear oil entrance on right side, mitigates the seal pressure of y-type seal ring 4.
In a word, preferred embodiment of the present utility model is the foregoing is only, it is all not to limit the utility model
Made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in this practicality
Within new protection domain.
Claims (4)
1. a kind of power takeoff, the plunger shaft matched with piston, the cylinder are provided with including at least piston and cylinder, in the cylinder
It is provided with the air admission hole communicated with plunger shaft, it is characterised in that be provided between the outer wall of the piston and the inwall of plunger shaft close
Seal structure, the sealing structure comprise at least y-type seal ring, and the opening of the y-type seal ring is towards air admission hole side.
2. according to the power takeoff described in claim 1, it is characterised in that the piston is provided with seal groove one, the Y types sealing
Circle is installed in the seal groove one.
3. according to the power takeoff described in claim 1 or 2, it is characterised in that the sealing structure also includes O-ring seal, institute
State piston and be provided with seal groove two, the seal groove two is located at side of the seal groove one away from air inlet, the O-ring seal peace
Loaded in the seal groove two.
4. according to the power takeoff described in claim 3, it is characterised in that the y-type seal ring and O-ring seal are rubber seal
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720898996.1U CN206958215U (en) | 2017-07-24 | 2017-07-24 | A kind of power takeoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720898996.1U CN206958215U (en) | 2017-07-24 | 2017-07-24 | A kind of power takeoff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206958215U true CN206958215U (en) | 2018-02-02 |
Family
ID=61381266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720898996.1U Active CN206958215U (en) | 2017-07-24 | 2017-07-24 | A kind of power takeoff |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206958215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980320A (en) * | 2018-08-28 | 2018-12-11 | 奇瑞汽车股份有限公司 | Four-wheel drive system and automobile |
| CN114294999A (en) * | 2021-11-30 | 2022-04-08 | 湖南航天机电设备与特种材料研究所 | Throwing device and throwing method |
-
2017
- 2017-07-24 CN CN201720898996.1U patent/CN206958215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980320A (en) * | 2018-08-28 | 2018-12-11 | 奇瑞汽车股份有限公司 | Four-wheel drive system and automobile |
| CN114294999A (en) * | 2021-11-30 | 2022-04-08 | 湖南航天机电设备与特种材料研究所 | Throwing device and throwing method |
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