CN201761366U - Vacuum control air bag of power takeoff - Google Patents
Vacuum control air bag of power takeoff Download PDFInfo
- Publication number
- CN201761366U CN201761366U CN2010202996692U CN201020299669U CN201761366U CN 201761366 U CN201761366 U CN 201761366U CN 2010202996692 U CN2010202996692 U CN 2010202996692U CN 201020299669 U CN201020299669 U CN 201020299669U CN 201761366 U CN201761366 U CN 201761366U
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- CN
- China
- Prior art keywords
- piston
- power takeoff
- air bag
- vacuum
- housing
- 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 - Lifetime
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Abstract
The utility model relates to a vacuum control air bag of a power takeoff, which comprises a cylindrical shell with an opened end and a sealed end; the shell is internally matched with a piston in a motive seal manner; the piston is fixedly connected on a control rod that is extended out from the sealed end of the shell and is in sealing fit with the shell; a vacuum chamber is formed between the internal end of the piston and the sealed end of the shell; the shell is provided with a vacuum joint communicated with the vacuum chamber; a spring is arranged between the internal end of the piston and the sealed end of the shell; and the opened end of the shell is provided with a first clamp ring contacted with the external end of the piston. In the utility model, as the control rod is connected with the power takeoff, the original mechanical control is combined together with the pneumatic control, and the control on the power takeoff can be effectively realized without need of a car equipped with an air pump, thus increasing the application range of the chassis of the power takeoff; and the structure and the operation are simple, and the maintenance is convenient.
Description
Technical field
The utility model relates to the power takeoff of special-use vehicle, specifically a kind of power takeoff vacuum control air bag.
Background technology
Along with expanding economy, the application and the demand of special-use vehicle constantly improve, and the kind of special-use vehicle is also brought in constant renewal in and regenerated, and this just proposes higher requirement to the transformation of special vehicle.Present most of special vehicle is to use power takeoff to carry out power taking output more, makes vehicle carry out operation under special state, effectively finishes all kinds of operatings needs.Power takeoff is arranged on the device of the transferring power between change speed gear box and the gear pump of hydraulic system, comprise parts such as input gear, output gear, backup bearing, engaging structure and spline housing, input gear is connected with the castellated shaft of change speed gear box by spline, input gear and output gear are meshing with each other, the mouth of output gear is provided with engaging structure, and engaging structure control spline housing engages with output gear or disconnects.
The domestic most of power takeoff of China adopts mechanical type control or two kinds of modes of air operated control at present.Mechanical type is controlled to be traditional mechanical flexible axle and finishes power takeoff control, and this just requires at operator's compartment bar handle to be installed, and can occur phenomenons such as flexible axle is stuck after period of service is permanent; Air operated control often can be avoided this type of flexible axle stuck phenomenon, but air operated control is subjected to the restriction ratio of vehicle bigger, is applicable to the vehicle of being furnished with air pump, is not having then to use air operated control class power takeoff on the vehicle of air pump.
Summary of the invention
The utility model provides a kind of power takeoff vacuum control air bag at the problems referred to above, and this air bag is applicable to the vehicle that does not have air pump, can guarantee the power takeoff stable operation, smooth running.
According to the technical solution of the utility model: a kind of power takeoff vacuum control air bag, comprise an end opening one end osed top cylindrical shell, be sealed with piston in the described housing, described piston is fixedly connected on the control stalk, described control stalk from the closed end of described housing stretch out and with described housing between dynamic seal cooperate, constitute vacuum chamber between the inner of described piston and the closed end of described housing, described housing is provided with the vacuum interface that is connected with described vacuum chamber, be provided with spring between the inner of described piston and the closed end of described housing, the open end of described housing is provided with and contacted first snap ring in the outer end of described piston.
Described vacuum interface is provided with plug screw.
The open end of described housing is provided with over cap.
Be provided with first seal ring between described housing and the described control stalk.
Be provided with second seal ring between described housing and the described piston.
The closed end of described housing is provided with first groove, and the inner of described piston is provided with second groove, and described spring housing is contained in outside the described control stalk, and an end of described spring is positioned at described first groove, and its other end is positioned at described second groove.
Described control stalk is provided with the shaft shoulder, and the inner of described piston abuts against on the described shaft shoulder, and its outer end is fixed by second snap ring.
Be provided with the 3rd seal ring between described piston and the described control stalk.
Technique effect of the present utility model is: the utility model is connected with power takeoff by control stalk, original mechanical control and air operated control are combined, need not be furnished with air pump by vehicle, can effectively realize the control of power takeoff, increase the chassis field of application of power takeoff; Structure, simple to operate, easy to maintenance.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a principle of work scheme drawing of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.
As shown in Figure 1, the utility model is a kind of power takeoff vacuum control air bag, comprises an end opening one end osed top cylindrical shape Al-alloy casing 9, and the open end of housing 9 is provided with over cap 1, can prevent that dust and other impurities from entering housing 9.Be sealed with piston 2 in the housing 9, be provided with second seal ring 12 between housing 9 and the piston 2.Piston 2 is fixedly connected on the corrosion-resistant steel control stalk 8, control stalk 8 from the closed end of housing 9 stretch out and with housing 9 between dynamic seal cooperate, be provided with first seal ring 7 between housing 9 and the control stalk 8.Constitute vacuum chamber 11 between the closed end of the inner of piston 2 and housing 9; housing 9 is provided with the vacuum interface 6 that is connected with vacuum chamber 11; vacuum interface 6 is provided with plug screw 5; the effect of plug screw 5 is protection vacuum interfaces 6, avoids foreign matter to enter vacuum chamber 11 from vacuum interface 6 before vacuum interface 6 is connected.Be provided with stainless steel spring 4 between the closed end of the inner of piston 2 and housing 9, the effect that the open end of housing 9 is provided with the outer end of piston 2 contacted first snap ring 3, the first snap rings 3 is to be used for the stroke of limited piston 2.
The connection mode of piston 2 and control stalk 8 can have multiple, mode such as for example can adopt welding, be threaded.Wherein a kind of connection mode is that control stalk 8 is provided with the shaft shoulder 13, and the inner of piston 2 abuts against on the shaft shoulder 13, and its outer end is fixing by second snap ring 16.Be provided with the 3rd seal ring 14 between piston 2 and the control stalk 8.
A kind of mounting means preferably of spring 4 is: the closed end at housing 9 is provided with first groove 10, the inner of piston 2 is provided with second groove 15, spring 4 is sleeved on outside the control stalk 8, and an end of spring 4 is positioned at first groove 10, and its other end is positioned at second groove 15.
Above-mentioned first seal ring 7, second seal ring 12 and the 3rd seal ring 14 all seal, to keep the degree of vacuum of vacuum chamber 11.
As shown in Figure 2, principle of work of the present utility model and working process are as follows: driving engine constantly needs from extraneous aspirated air in operational process, forms the vacuum energy between throttle gate and valve stem, and this vacuum energy is stored by accumulation chamber.During the utility model work, be connected with power takeoff, be connected with accumulation chamber by vacuum interface 6 by control stalk 8.When the needs power takeoff is worked, connection with the vacuum chamber on accumulation chamber and the utility model 11, at this moment because of the vacuum pressure of accumulation chamber, make vacuum chamber 11 form suction, the elastic force that forces piston 2 to overcome spring 4 forms mobile, thereby push lever 8 moves, when piston 2 moved to and contacts with housing 9, piston 2 moved and stops, at this moment control stalk 8 by with the internal connection of power takeoff, and under the promotion of piston 2, finish certain stroke distances, realize that the mechanical type of power takeoff controls the stroke of mechanical flexible axle.
The utlity model has following advantage: 1, the utility model is connected with power takeoff by control lever, original machinery control and pneumatic control are combined, need not be furnished with air pump by vehicle, can effectively realize the control of power takeoff, increase the chassis range of application of power takeoff; 2, structure, simple to operate is easy to maintenance; 3, adopt Al-alloy casing, weight reduction, and adopt stainless steel spring and control lever, guarantee reliability.
Claims (8)
1. power takeoff vacuum control air bag, it is characterized in that: comprise an end opening one end osed top cylindrical shell (9), be sealed with piston (2) in the described housing (9), described piston (2) is fixedly connected on the control stalk (8), described control stalk (8) from the closed end of described housing (9) stretch out and with described housing (9) between dynamic seal cooperate, constitute vacuum chamber (11) between the closed end of the inner of described piston (2) and described housing (9), described housing (9) is provided with the vacuum interface (6) that is connected with described vacuum chamber (11), be provided with spring (4) between the closed end of the inner of described piston (2) and described housing (9), the open end of described housing (9) is provided with and contacted first snap ring in the outer end of described piston (2) (3).
2. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that described vacuum interface (6) is provided with plug screw (5).
3. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that the open end of described housing (9) is provided with over cap (1).
4. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that being provided with first seal ring (7) between described housing (9) and the described control stalk (8).
5. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that being provided with second seal ring (12) between described housing (9) and the described piston (2).
6. according to the described power takeoff vacuum control air bag of claim 1, the closed end that it is characterized in that described housing (9) is provided with first groove (10), the inner of described piston (2) is provided with second groove (15), described spring (4) is sleeved on outside the described control stalk (8), one end of described spring (4) is positioned at described first groove (10), and its other end is positioned at described second groove (15).
7. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that described control stalk (8) is provided with the shaft shoulder (13), the inner of described piston (2) abuts against on the described shaft shoulder (13), and its outer end is fixing by second snap ring (16).
8. according to the described power takeoff vacuum control air bag of claim 7, it is characterized in that being provided with the 3rd seal ring (14) between described piston (2) and the described control stalk (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202996692U CN201761366U (en) | 2010-08-16 | 2010-08-16 | Vacuum control air bag of power takeoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202996692U CN201761366U (en) | 2010-08-16 | 2010-08-16 | Vacuum control air bag of power takeoff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201761366U true CN201761366U (en) | 2011-03-16 |
Family
ID=43713974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202996692U Expired - Lifetime CN201761366U (en) | 2010-08-16 | 2010-08-16 | Vacuum control air bag of power takeoff |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201761366U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913324A (en) * | 2010-08-16 | 2010-12-15 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff vacuum control air bag |
| CN103072480A (en) * | 2013-01-21 | 2013-05-01 | 四川重汽王牌兴城液压件有限公司 | Pneumatic power takeoff device used for cargo carrying dump truck |
-
2010
- 2010-08-16 CN CN2010202996692U patent/CN201761366U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913324A (en) * | 2010-08-16 | 2010-12-15 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff vacuum control air bag |
| CN101913324B (en) * | 2010-08-16 | 2012-12-12 | 无锡英特帕普威孚液压有限责任公司 | Power takeoff vacuum control air bag |
| CN103072480A (en) * | 2013-01-21 | 2013-05-01 | 四川重汽王牌兴城液压件有限公司 | Pneumatic power takeoff device used for cargo carrying dump truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110316 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |