CN204004562U - The double air controlled selector valve of air pressure self-locking - Google Patents
The double air controlled selector valve of air pressure self-locking Download PDFInfo
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- CN204004562U CN204004562U CN201420394132.2U CN201420394132U CN204004562U CN 204004562 U CN204004562 U CN 204004562U CN 201420394132 U CN201420394132 U CN 201420394132U CN 204004562 U CN204004562 U CN 204004562U
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Abstract
The utility model provides a kind of double air controlled selector valve of air pressure self-locking, comprising: valve body, valve rod, first piston and the second piston, and described valve rod is assemblied among described valve body; The each assembling in two ends one piston of described valve rod, also comprises: an air pressure self-locking device, and described air pressure self-locking device comprises: the first stem orifices pipeline and the second stem orifices pipeline; The first stem orifices pipeline and the second stem orifices pipeline are all opened on described valve rod, are connected respectively with an end face of described valve rod, are also connected with primary air inlet respectively.That the double air controlled selector valve of air pressure self-locking of the present utility model has advantages of is simple and compact for structure, rate of fault reduces, longer service life.
Description
Technical field
The utility model relates to a kind of vehicle shift system, is specifically related to the double air controlled selector valve of a kind of transmission for vehicles Pneumatic shift air pressure self-locking.
Background technique
Along with constantly standardization of highway in China carrier management, it is efficient, the epoch of lean running arrive, this require industry will be by Lifting Convey efficiency, reduce vehicle body deadweight, and the measure such as fuel consumption level that reduces the unit volume of goods transported realizes the higher level of profitability.And highway freight user requires heavy jig for high-speed overload, lightweight, the attribute such as fuel economy is good, the rate of attendance is high, product demand shifts to high-endization gradually.Estimate, the heavily card product that carries high-power, more gear gearboxes will more and more become main flow, as 16 gears, 20 gears, 24 shift transmissions.
Existing shift control system be made up of to realize that secondary box of gearbox shifts gears a shift handle valve of controlling the switch valve with two-position and five-pass of air cylinder of speed changer and the gas path control valve of bi-bit bi-pass and two-position three way etc., although this Pneumatic shift operating system connects simple, but necessarily require the first handle valve preliminary election of user, gear shift operation again, if user first operates gearshift, handle valve preliminary election again, there will be air cylinder of speed changer inside to collaborate, and causes speed changer high to low gear switching failure.The double air controlled selector valve of this cover system is at gas control suction port all after release, owing to not having air pressure or mechanical mechanism to maintain original state, in the situation that being subject to vibrating, can cause valve rod to produce and slide with respect to valve body, cause valve commutation or cause valve gas leakage in critical localisation, so in use, have the risk of automatic reverse or gas leakage, be poor reliability, have risk.Existing technology is by increase self-locking mechanism on the declutch shift shaft of air cylinder of speed changer, or uses mechanical type self-locking mechanism, although also can reach the effect of self-locking, can make speed changer structure complicated, increases manufacture cost.Therefore, on the double air controlled selector valve of prior art, there are some technical problems anxious to be resolved.
Model utility content
For above-mentioned defect, the purpose of this utility model is to provide a kind of simple in structure and improve working life of product, reduces the air pressure self-locking double air controlled selector valve of rate of fault, to solve the problem of prior art.
For achieving the above object, the utility model has adopted following technological scheme:
A double air controlled selector valve for air pressure self-locking, comprising: a valve body, a valve rod, a first piston and one second piston, and described valve rod is assemblied among described valve body; The each assembling in two ends one piston of described valve rod, also comprises: an air pressure self-locking device, and described air pressure self-locking device comprises:
One first stem orifices pipeline, described the first stem orifices pipeline is opened on described valve rod, one end of described the first stem orifices pipeline is connected towards the end face of one end of described first piston with described valve rod, and the other end of described the first stem orifices pipeline is connected with primary air inlet;
One second stem orifices pipeline, described the second stem orifices pipeline is opened on described valve rod, one end of described the second stem orifices pipeline is connected towards the end face of one end of described the second piston with described valve rod, and the other end of described the second stem orifices pipeline is connected with primary air inlet.
According to the double air controlled selector valve of the air pressure self-locking described in the utility model embodiment, one end that described the first stem orifices pipeline is connected with primary air inlet is connected with the first working hole pipeline.
According to the double air controlled selector valve of the air pressure self-locking described in the utility model embodiment, one end that described the second stem orifices pipeline is connected with primary air inlet is connected with the second working hole pipeline.
According to the double air controlled selector valve of the air pressure self-locking described in the utility model embodiment, described double air controlled selector valve is two-position five-way valve.
Owing to having adopted above technical characteristics, make the utility model there is following advantage and good effect than prior art:
The first, simply compactness of project organization of the present utility model, is used tracheae ventilation air pressure self-locking failure rate is low, the longer service life of selector valve;
The second, the utility model perforate on valve rod does not need to assemble other mechanical device, reduces production hour, has saved cost.
Certainly, implement any one specific embodiment of the utility model content, might not there is above whole technique effect simultaneously.
Brief description of the drawings
Fig. 1 is the double air controlled structure of reversing valve schematic diagram of the utility model air pressure self-locking;
Fig. 2 is the double air controlled selector valve second of the utility model air pressure self-locking schematic diagram of working.
Embodiment
For ease of understanding, below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, a kind of double air controlled structure of reversing valve schematic diagram of air pressure self-locking, comprising:
Valve body 10, valve rod 20, first piston 30 and the second piston 40, described valve rod 20 is assemblied among described valve body 10; In the valve body 10 at described valve rod 20 two ends, each assembling one piston is first piston 30 and the second piston 40, in addition, on valve body 10, also offer working hole and leakage port, working hole is the first working hole 11 and the second working hole 12 in the present embodiment, and leakage port is the first leakage port 13 and the second leakage port 14, because be the valve body of gas control operation, so except primary air inlet 15, also having two gas control suction ports is that the first gas control suction port 16 and 17, two gas control suction ports of the second gas control suction port are separately positioned on the valve body 10 at valve rod 20 two ends.
In addition, in order to reach the function of air pressure self-locking, also comprise: an air pressure self-locking device, described air pressure self-locking device comprises: the first stem orifices pipeline 21 and the second stem orifices pipeline 22, the first stem orifices pipeline 21 and the second stem orifices pipeline 22 are all opened on described valve rod 20, and one end of the first stem orifices pipeline 21 is connected towards the end face of one end of first piston 30 with valve rod 20, the other end of the first stem orifices pipeline 21 is connected with primary air inlet 15; Otherwise, one end of the second stem orifices pipeline 22 is connected towards the end face of one end of described the second piston 40 with valve rod 20, the other end of the second stem orifices pipeline 22 is also connected with primary air inlet 15, although the first stem orifices pipeline 21 has one end to be connected with primary air inlet 15 with the second stem orifices pipeline 22, but, between them, do not connect, namely can be simultaneously from primary air inlet 15 air inlets.
Further, one end that the first stem orifices pipeline 21 is connected with primary air inlet 15 is connected with the first working hole 11 pipelines, and one end that the second stem orifices pipeline 22 is connected with primary air inlet 15 is connected with the second working hole 12 pipelines.Will say in addition, the double air controlled selector valve of the air pressure self-locking of the utility model design is two-position five-way valve.
The double air controlled selector valve work of the utility model air pressure self-locking is as follows:
Please refer to Fig. 1, before commutation: primary air inlet 15 is always at aeration status, in the time that the first gas control suction port 16 is ventilated, promoting valve rod 20 moves to right, primary air inlet 15 communicates with the first working hole 11, primary air inlet 15 gases promote valve rod 20 and first piston 30 by the first stem orifices pipeline 21 simultaneously, form first cavity 50; Now, when after the first gas control suction port 16 releases, because primary air inlet 15 is always in aeration status, the first cavity 50 keeps pressure pushing away valve rod 20 always, can not cause because of vibration that valve rod 20 produces slip, reaches the function of locking.
Please refer to Fig. 2, after commutation: primary air inlet 15 is always at aeration status, in the time that the second gas control suction port 17 is ventilated, the thrust that the second piston 40 is subject to is greater than dwell pressure that valve rod 20 is subject to (according to lifting surface area difference, pressure difference principle), valve rod 20 is promoted to direction left and move, commutate.After commutation, primary air inlet 15 communicates with the second working hole 12, and the air pressure of primary air inlet 15 promotes valve rod 20 by the second stem orifices pipeline 22 simultaneously, forms the second cavity 60; Now, when after the second gas control suction port 17 releases, because primary air inlet 15 is always in aeration status, the second cavity 60 keeps pressure pushing away valve rod 20 always, can not cause because of vibration that valve rod 20 produces slip, reaches the function of locking.
Owing to having adopted above technical characteristics, make the utility model there is following advantage and good effect than prior art:
The first, simply compactness of project organization of the present utility model, is used tracheae ventilation air pressure self-locking failure rate is low, the longer service life of selector valve;
The second, the utility model perforate on valve rod does not need to assemble other mechanical device, reduces production hour, has saved cost.
Certainly, implement any one specific embodiment of the utility model content, might not there is above whole technique effect simultaneously.
Disclosed is above only preferred embodiment of the present utility model; but be not used for limiting itself; anyly have the knack of those skilled in the art without prejudice to the utility model spiritual connotation in the situation that, the equalization of doing changes and changes, and all should drop in protection domain of the present utility model.
Claims (4)
1. a double air controlled selector valve for air pressure self-locking, comprising: a valve body, a valve rod, a first piston and one second piston, and described valve rod is assemblied among described valve body; The each assembling in two ends one piston of described valve rod, is characterized in that, also comprises: an air pressure self-locking device, and described air pressure self-locking device comprises:
One first stem orifices pipeline, described the first stem orifices pipeline is opened on described valve rod, one end of described the first stem orifices pipeline is connected towards the end face of one end of described first piston with described valve rod, and the other end of described the first stem orifices pipeline is connected with primary air inlet;
One second stem orifices pipeline, described the second stem orifices pipeline is opened on described valve rod, one end of described the second stem orifices pipeline is connected towards the end face of one end of described the second piston with described valve rod, and the other end of described the second stem orifices pipeline is connected with primary air inlet.
2. the double air controlled selector valve of air pressure self-locking as claimed in claim 1, is characterized in that, one end that described the first stem orifices pipeline is connected with primary air inlet is connected with the first working hole pipeline.
3. the double air controlled selector valve of air pressure self-locking as claimed in claim 1, is characterized in that, one end that described the second stem orifices pipeline is connected with primary air inlet is connected with the second working hole pipeline.
4. the double air controlled selector valve of air pressure self-locking as claimed in claim 3, is characterized in that, described double air controlled selector valve is two-position five-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394132.2U CN204004562U (en) | 2014-07-17 | 2014-07-17 | The double air controlled selector valve of air pressure self-locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394132.2U CN204004562U (en) | 2014-07-17 | 2014-07-17 | The double air controlled selector valve of air pressure self-locking |
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| Publication Number | Publication Date |
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| CN204004562U true CN204004562U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420394132.2U Active CN204004562U (en) | 2014-07-17 | 2014-07-17 | The double air controlled selector valve of air pressure self-locking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964069A (en) * | 2015-07-08 | 2015-10-07 | 实用动力(中国)工业有限公司 | Pneumatic hydraulic three-position five-way reversing valve |
| CN106979362A (en) * | 2017-04-21 | 2017-07-25 | 浙江亿日气动科技有限公司 | The Pneumatic reversal valve of automatic compensation air pressure |
-
2014
- 2014-07-17 CN CN201420394132.2U patent/CN204004562U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964069A (en) * | 2015-07-08 | 2015-10-07 | 实用动力(中国)工业有限公司 | Pneumatic hydraulic three-position five-way reversing valve |
| CN106979362A (en) * | 2017-04-21 | 2017-07-25 | 浙江亿日气动科技有限公司 | The Pneumatic reversal valve of automatic compensation air pressure |
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