CN101913324B - Power takeoff vacuum control air bag - Google Patents
Power takeoff vacuum control air bag Download PDFInfo
- Publication number
- CN101913324B CN101913324B CN 201010258640 CN201010258640A CN101913324B CN 101913324 B CN101913324 B CN 101913324B CN 201010258640 CN201010258640 CN 201010258640 CN 201010258640 A CN201010258640 A CN 201010258640A CN 101913324 B CN101913324 B CN 101913324B
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- China
- Prior art keywords
- piston
- power takeoff
- housing
- air bag
- vacuum
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- 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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Abstract
The invention relates to a power takeoff vacuum control air bag, which comprises a cylindrical shell with an open end and a closed end; wherein a piston is matched in the shell in a dynamic sealing mode; the piston is fixedly connected to a control rod; the control rod extends outside from the closed end of the shell and is matched with the shell in a dynamic sealing mode; a vacuum chamber is formed between the inner end of the piston and the closed end of the shell; a vacuum interface communicated with the vacuum chamber is arranged on the shell; a spring is arranged between the inner end of the piston and the closed end of the shell; and the open end of the shell is provided with a first snap ring contacting the outer end of the piston. By connecting the control rod with a power takeoff, the original mechanical control and pneumatic control are integrated together, the power takeoff can be controlled effectively without matching with an air pump for a vehicle, and the application range of a chassis of the power takeoff is extended. The power takeoff vacuum control air bag has the advantages of simple structure, easy operation and convenient maintenance.
Description
Technical field
The present invention 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 under special state, carry out operation, effectively accomplishes 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 through spline; Input gear and output gear are meshing with each other, and the mouth of output gear is provided with engaging structure, and engaging structure control spline housing engages with output gear or breaks off.
China's most domestic power takeoff 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 accomplishes 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 receives 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 present invention is directed to the problems referred to above, a kind of power takeoff vacuum control air bag is provided, 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 technical scheme of the present invention: 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 said housing, said piston is fixedly connected on the control stalk, said control stalk from the closed end of said housing stretch out and with said housing between dynamic seal cooperate; Constitute vacuum chamber between the inner of said piston and the closed end of said housing; Said housing is provided with the vacuum interface that is connected with said vacuum chamber, is provided with spring between the inner of said piston and the closed end of said housing, and the open end of said housing is provided with and contacted first snap ring in the outer end of said piston.
Said vacuum interface is provided with plug screw.
The open end of said housing is provided with over cap.
Be provided with first seal ring between said housing and the said control stalk.
Be provided with second seal ring between said housing and the said piston.
The closed end of said housing is provided with first groove, and the inner of said piston is provided with second groove, and said spring housing is contained in outside the said control stalk, and an end of said spring is positioned at said first groove, and its other end is positioned at said second groove.
Said control stalk is provided with the shaft shoulder, and the inner of said piston abuts against on the said shaft shoulder, and its outer end is fixed by second snap ring.
Be provided with the 3rd seal ring between said piston and the said control stalk.
Technique effect of the present invention is: the present invention is connected with power takeoff through control stalk, and original mechanical control and air operated control are combined, and need not be furnished with air pump by vehicle, can effectively realize the control of power takeoff, has increased 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 invention;
Fig. 2 is a principle of work scheme drawing of the present invention.
The specific embodiment
Be further described below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1, the present invention 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 getting into 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, before vacuum interface 6 is connected, avoids foreign matter to get into vacuum chamber 11 from vacuum interface 6.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 invention and working process are following: driving engine constantly need form the vacuum ability from extraneous aspirated air between throttle gate and valve stem in operational process, this vacuum energy is stored through accumulation chamber.When the present invention works, be connected with power takeoff, be connected with accumulation chamber through vacuum interface 6 through control stalk 8.When the needs power takeoff is worked, with the connection of the vacuum chamber in accumulation chamber and the present invention 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 through with the internal connection of power takeoff; And under the promotion of piston 2, accomplish certain stroke distances, realize that the mechanical type of power takeoff controls the stroke of mechanical flexible axle.
The present invention has the following advantages: 1, the present invention is connected with power takeoff through control stalk, and original mechanical control and air operated control are combined, and need not be furnished with air pump by vehicle, can effectively realize the control of power takeoff, has increased the chassis field of application of power takeoff; 2, structure, simple to operate is easy to maintenance; 3, adopt Al-alloy casing, expendable weight, and adopt stainless steel spring and control stalk, 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 said housing (9); Said piston (2) is fixedly connected on the control stalk (8); Said control stalk (8) from the closed end of said housing (9) stretch out and with said housing (9) between dynamic seal cooperate, constitute vacuum chamber (11) between the closed end of the inner of said piston (2) and said housing (9), said housing (9) is provided with the vacuum interface (6) that is connected with said vacuum chamber (11); Be provided with spring (4) between the closed end of the inner of said piston (2) and said housing (9), the open end of said housing (9) is provided with and contacted first snap ring in the outer end of said piston (2) (3).
2. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that said 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 said 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 said housing (9) and the said 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 said housing (9) and the said 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 said housing (9) is provided with first groove (10); The inner of said piston (2) is provided with second groove (15); Said spring (4) is sleeved on outside the said control stalk (8), and an end of said spring (4) is positioned at said first groove (10), and its other end is positioned at said second groove (15).
7. according to the described power takeoff vacuum control air bag of claim 1, it is characterized in that said control stalk (8) is provided with the shaft shoulder (13), the inner of said piston (2) abuts against on the said 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 said piston (2) and the said control stalk (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010258640 CN101913324B (en) | 2010-08-16 | 2010-08-16 | Power takeoff vacuum control air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010258640 CN101913324B (en) | 2010-08-16 | 2010-08-16 | Power takeoff vacuum control air bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101913324A CN101913324A (en) | 2010-12-15 |
| CN101913324B true CN101913324B (en) | 2012-12-12 |
Family
ID=43321028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010258640 Expired - Fee Related CN101913324B (en) | 2010-08-16 | 2010-08-16 | Power takeoff vacuum control air bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101913324B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217127A (en) * | 1990-04-27 | 1993-06-08 | George Rodriquez | Vacuum activated power take off for winch |
| CN201078439Y (en) * | 2007-08-27 | 2008-06-25 | 王巧扣 | Force adopting equipment with adjustable speed ratio |
| CN201109368Y (en) * | 2007-11-30 | 2008-09-03 | 湖北亚川汽车齿轮集团有限公司 | Power take-off device for gear box of cleaning vehicle |
| CN201218303Y (en) * | 2008-04-03 | 2009-04-08 | 王巧扣 | Power takeoff device with substitute bearing external roller path input gear |
| CN201472958U (en) * | 2009-06-22 | 2010-05-19 | 海南金鹿农机发展股份有限公司 | Biogas residue/slurry pump drainage multifunctional tractor |
| CN201761366U (en) * | 2010-08-16 | 2011-03-16 | 无锡英特帕普威孚液压有限责任公司 | Vacuum control air bag of power takeoff |
-
2010
- 2010-08-16 CN CN 201010258640 patent/CN101913324B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217127A (en) * | 1990-04-27 | 1993-06-08 | George Rodriquez | Vacuum activated power take off for winch |
| CN201078439Y (en) * | 2007-08-27 | 2008-06-25 | 王巧扣 | Force adopting equipment with adjustable speed ratio |
| CN201109368Y (en) * | 2007-11-30 | 2008-09-03 | 湖北亚川汽车齿轮集团有限公司 | Power take-off device for gear box of cleaning vehicle |
| CN201218303Y (en) * | 2008-04-03 | 2009-04-08 | 王巧扣 | Power takeoff device with substitute bearing external roller path input gear |
| CN201472958U (en) * | 2009-06-22 | 2010-05-19 | 海南金鹿农机发展股份有限公司 | Biogas residue/slurry pump drainage multifunctional tractor |
| CN201761366U (en) * | 2010-08-16 | 2011-03-16 | 无锡英特帕普威孚液压有限责任公司 | Vacuum control air bag of power takeoff |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101913324A (en) | 2010-12-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20210816 |