CN207000448U

CN207000448U - Upper valve body with pressure release compensation and the pneumatic operated valve with the upper valve body

Info

Publication number: CN207000448U
Application number: CN201720830513.4U
Authority: CN
Inventors: 谢洪川
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-10
Filing date: 2017-07-10
Publication date: 2018-02-13
Anticipated expiration: 2027-07-10

Abstract

The utility model discloses a kind of upper valve body with pressure release compensation and the pneumatic operated valve with the upper valve body, upper valve body includes upper shell, and valve element, upper valve chamber seal, upper Valve seal, upper valve spring, upper valve block piece are provided with housing；Valve core inside is provided with movable piston bush, and piston bush can make in upper valve core up and down deposits headroom so as to change inside upper shell；Pneumatic operated valve also includes lower valve body, and coupled piston, lower valve chamber seal, lower Valve seal, lower valve spring, lower valve plug are provided with lower valve body；Upper valve body and lower valve body are all connected to independent air feed pump, and lower valve body is also connected to brake chamber, by the teamwork of upper lower valve body, change the break-make of gas circuit, and then control the air-flow into brake chamber to realize automobile brake.The utility model uses new valve element, can reach the braking effect of more efficient stable.

Description

Upper valve body with pressure release compensation and the pneumatic operated valve with the upper valve body

Technical field

The present invention relates to braking automobile pneumatic operated valve field, and in particular to pressure release compensation upper valve body and use the upper valve body Pneumatic operated valve.

Background technology

Pneumatic operated valve is the primary control among running braking system, the braking procedure of primary brake system in double loop With realize sensitive servo antrol during release, brake valve mainly by epicoele piston, cavity of resorption piston, push rod, balancing spring, return Position spring (upper and lower cavity), epicoele valve, cavity of resorption valve, air inlet, gas outlet, exhaust outlet, passage composition.When driver steps on During pedal, piston is set to push balancing spring by stretching pull bar, piston moves down, and first closes drain tap, opens air inlet Valve, now the compressed air of gas receiver be filled with brake chamber through intake valve, promote air chamber diaphragm to rotate brake cam so as to Realize wheel braking.

The cavity space of existing pneumatic operated valve upper valve body is fixed non-adjustable, and the dynamics of trampling reaches most in brake process After big, then the air pressure in pneumatic valve chamber is not over peak value, does not compensate stopping power raising, therefore existing pneumatic operated valve Stopping power can not tackle more severe working environment, can not reach more excellent braking effect during in face of emergency case.

Having partial pneumatic valve to be arranged to cavity space can partly be adjusted, and this pneumatic operated valve controls Space adjustment by spring etc. Block return, but such return mode is larger by the resistance of chamber interior air pressure, Space adjustment block is difficult to be returned to initially Position, therefore the regulatory function of the Space adjustment block is unsatisfactory.

The content of the invention

In order to solve the above technical problems, the gas the invention discloses the upper valve body compensated with pressure release and with the upper valve body Dynamic valve, it is desirable to provide a kind of cavity space of upper valve body can suitably change, and in braking to providing atmospheric pressure compensating in chamber, carry The pneumatic operated valve of high skidding ability；Pressure release compensation, the auxiliary chamber during pressure release are provided transformable chamber simultaneously Space returns original state, the pressure in removal chamber, effectively extends the service life of pneumatic operated valve.

The technical solution adopted by the present invention is：

Upper valve body with pressure release compensation, including upper shell, the upper chamber and upper valve air storing cavity that upper shell is communicated with, also set There is upper valve pneumatic cavity；Valve element is provided with upper chamber, upper valve air storing cavity is provided with upper valve chamber seal, positioned at upper valve chamber seal The upper valve gasket on top, the upper Valve seal being enclosed on chamber seal, it is placed between upper valve chamber seal and upper Valve seal Upper valve spring, the upper valve block piece for being placed in upper valve its lower part, upper valve pneumatic cavity are located at the bottom of upper shell.

Upper valve gasket is ring-type, is coaxially disposed with upper Valve seal, and upper valve gasket is fixed on upper chamber and connected with upper valve air storing cavity Interface；And the intermediate throughholes of upper valve gasket allow to drive the lower end of piston to pass through.

Specifically, valve element is made up of piston bush and driving piston；Piston bush is connected with upper shell and piston bush and upper casing The first cavity is formed between body, upper shell is communicated with the compensation stomata of first cavity, compensation stomata connection compensation adjustment dress Put；Driving piston is provided with the shaft shoulder and driving piston includes three sections of upper, middle and lower, drives the epimere of piston to be contacted with upper enclosure inner wall face Or piston bush contact, stage casing are located in piston bush, hypomere is at the connected entrance between upper chamber and upper valve air storing cavity.Driving Drive connection portion is additionally provided with the top of piston, drive connection portion is the connector of groove-like, and its role is to the biography with outside Lever contacts, and bears to trample the pressure that brake pedal transmission comes during braking and passes to driving piston, downward as driving piston The driving force of motion.

Further, piston bush is provided with back-moving spring and counterbalance spring, and back-moving spring one end is connected to piston bush, another End is connected to the epimere of driving piston；Counterbalance spring one end is connected to piston bush, is connected to spring mountings or compensation adjustment Part.

Back-moving spring is connected with driving piston, and its role is to go up to provide restoring force for driving piston；Counterbalance spring with Spring mountings are connected, and piston bush is flexibly connected with epicoele chamber interior walls, and piston bush is upper in upper valve body air inlet and exhaust process Enter line slip in chamber, back-moving spring provides restoring force for the reply of piston bush；Counterbalance spring is attached with compensation adjustment part, Piston bush is compensation adjustment part provided with single movable part, and in upper valve body air inlet and exhaust process, compensation adjustment part is in work Carry out up and down on plug sleeve, the size of headroom is deposited in the inside for adjusting upper chamber, and counterbalance spring is that compensation adjustment part is being replied Restoring force is provided during initial position.

Further, upper shell is provided with upper valve air inlet and upper valve air gate, and upper valve air inlet connects upper valve air storing cavity, on Valve air gate connects upper chamber, and passage is provided between upper chamber and upper valve pneumatic cavity.The effect of passage is upper chamber Gas import upper valve pneumatic cavity.

Further, described piston bush is cylindrical sleeve tubular or inverted T-shaped sleeve-shaped, piston bush and upper chamber's internal face It is slidably connected；

During from this piston bush, back-moving spring quantity is at least one, when back-moving spring quantity is for the moment, back-moving spring connects It is connected to the epimere of driving piston；When back-moving spring quantity is more than for the moment, back-moving spring is sequentially coaxially located on piston bush；Reset bullet Counterbalance spring is additionally provided with the outside of spring, counterbalance spring is connected to spring mountings；Described spring mountings are to be located at upper chamber Internal ring catch.The effect of ring catch is to provide stress point for counterbalance spring.

Scheme described above is not limited to, piston bush is double layer sleeve barrel, and the internal layer bottom of piston bush is connected with outer bottom, Groove is formed between internal layer and outer layer, piston bush longitudinal cross-section is " mountain " font, and piston bush is fixedly connected with upper chamber, specifically connected The mode of connecing can be step inlay card attachment structure and coordinate snap ring to fix, and can also be connected by screw bolts, snap connection Deng.

During from this piston bush, the second cavity is formed with driving piston inside piston bush, is provided with and resets in the second cavity Spring, back-moving spring upper end is connected to driving piston epimere and lower end is connected to piston bush；Piston bush outer wall and upper enclosure inner wall Face forms upper end closed, the 3rd cavity of lower ending opening, is provided with compensation adjustment part in the 3rd cavity, the company of being additionally provided with the 3rd cavity Connect the counterbalance spring of compensation adjustment part and the 3rd cavity top end；Described compensation adjustment part is back-up ring, and back-up ring is located at the 3rd cavity It is interior, it can be slided during upper valve body air inlet and exhaust in the 3rd cavity, headroom, back-up ring are deposited in the inside for changing upper chamber It is in close contact with the internal face of the 3rd cavity, prevents gas leakage.

Scheme described above is not limited to, piston bush is double layer sleeve barrel, and the internal layer bottom of piston bush is connected with outer bottom, Groove is formed between internal layer and outer layer, piston bush longitudinal cross-section is " mountain " font, and piston bush is slidably connected with upper chamber, joint face Sealed by sealing ring, prevent gas leakage.

During from this piston bush, the second cavity is formed with driving piston inside piston bush, is provided with and resets in the second cavity Spring, back-moving spring upper end is connected to driving piston epimere and lower end is connected to piston bush；The outer pars intramuralis of piston bush is provided with upper end Closing, the 4th wall of lower ending opening, the 4th wall is interior to be provided with compensation adjustment part, and connection compensation adjustment is additionally provided with the 4th cavity The counterbalance spring of part and the 4th cavity top end；Described compensation adjustment part is back-up ring, and back-up ring is located in the 4th cavity, in upper valve body It can be slided during air inlet and exhaust in the 4th cavity, headroom, back-up ring and the 4th cavity are deposited in the inside for changing upper chamber Internal face be in close contact, prevent gas leakage.

Further, described compensation stomata connects the first cavity, the 3rd cavity or the 4th cavity, also connects the second chamber Body.

The effect of compensation stomata is to provide gas to the first cavity, the 3rd cavity or the 4th cavity and/or the second cavity Body, help back-moving spring to reset, increase the reply volume of back-moving spring, increase piston, piston bush or compensation when being necessary Adjust the stroke handed over.

Further, described compensation adjustment device is placed in compensation air flue, compensation air flue connection upper chamber and lower valve body Outside outside, or compensation air flue connection upper valve air storing cavity and lower valve body；Compensate the compensation gas outlet of air flue connection compensation stomata； Compensation adjustment device includes compensating piston and adjusting knob, and adjusting knob is located at the outside port of compensation air flue, and adjusting knob It is connected between compensating piston by elastic parts.

Elastic parts includes counterbalance spring, compensation catch, compensation screw, and counterbalance spring and compensation catch are located in air flue, Counterbalance spring one end contacts with compensating piston, and the other end contacts with compensation catch；Compensation screw one end is fixed on adjusting knob And the other end props up compensation catch.

Further, as a kind of preferred scheme, compensating piston inside is plugging structure, is compensated on catch and adjusting knob It is provided with relief hole.

During using this compensating piston, the course of work of compensation adjustment device is：Inside upper chamber or upper valve air storing cavity Gases at high pressure enter compensation air flue, promote compensating piston motion, now compensating piston elasticity of compression component and toward compensation outlet The direction movement of mouth；When compensating piston is by compensating gas outlet, gases at high pressure enter compensation stomata by compensating gas outlet It is interior, and then cavity corresponding to entrance realizes atmospheric pressure compensating.When upper chamber's internal pressure relief, effect of the compensating piston in elastic parts Lower reply initial position, after compensating gas outlet, compensate the gases at high pressure in gas outlet and revolved by compensating catch and regulation Relief hole discharge on button.

Or as another preferred scheme, compensating piston inside is provided with exhaust passage and exhaust passage is by Non-return air valve The structure of closing；

During using this piston, the gases at high pressure inside upper chamber or upper valve air storing cavity enter compensation air flue, promote and mend Piston movement is repaid, now the closed check valve in compensating piston, the side of compensating piston elasticity of compression component and past compensation gas outlet To movement；When compensating piston is by compensating gas outlet, gases at high pressure are entered in compensation stomata by compensating gas outlet, and then Atmospheric pressure compensating is realized into corresponding wall.When upper chamber's internal pressure relief, compensating piston is replied in the presence of elastic parts Initial position, after compensating gas outlet, the gases at high pressure in compensation gas outlet push the check valve inside compensating piston open, and To upper chamber's pressure release.

Further, the epimere side wall of described driving piston and stage casing side wall are provided with sealing ring, epimere side The sealing ring of wall is in close contact with upper chamber's internal face close contact or with piston bush internal face, the sealing of stage casing side wall Circle is in close contact with piston bush internal face.

Further, it is provided with sealing ring outside the piston bush of the valve element, sealing ring closely connects with upper chamber internal face Touch.

Set the meaning of sealing ring to be to prevent gas leakage, keep air-tightness inside pneumatic operated valve, so as to ensure that pneumatic operated valve works Validity and accuracy.

Further, driving piston block piece is provided with inside described upper chamber, or driving piston is provided with piston bush Block piece.The effect of driving piston block piece is to limit the extreme position that piston bush moves upwards, avoids driving piston to come off.

Further, described upper valve chamber seal is the sleeve with air gap washer, and air gap washer covering driving is lived Fill in the air gap between lower end and connected entrance.

Drive piston to carry out up and down, drive and be located at high limit position, its lower end and connected entrance under piston normality Flush or positioned at the edge of upper chamber one end of connected entrance, the now closed connected entrance of air gap washer, upper chamber and upper valve air storing cavity Between keep absolutely gas-tight；Piston is driven to move downward in skidding, driving piston promotes upper valve chamber seal, Air gap washer is opened on top, is connected between upper chamber and upper valve air storing cavity, and the gas of upper valve air storing cavity enters upper chamber by connected entrance, And upper valve pneumatic cavity is entered by blow vent.

Further, described upper valve spring is volute spring, one end of upper valve spring slot and upper valve chamber seal One end of contact and wide-mouth and upper valve washer contacts.Bigger decrement can be obtained using volute spring, there is provided more sufficient returns Multiple power, the production space of upper valve air storing cavity can be also reduced to a certain extent, there is product to improving the intensity of upper valve body, saving resource Pole meaning.

The effect of upper Valve seal is to keep lower valve spring axially compressed, avoids spring sideslip；While upper Valve seal The axial direction property that upper valve chamber seal can also be kept to move.

Further, described upper valve block piece, spring mountings, driving piston block piece are snap ring.Elasticity Snap ring is easily installed, using flexible, practical, and it is as the preferred scheme in the present invention, in the case where meeting to require Replace with other workpiece.

With the pneumatic operated valve for the upper valve body being described above, including the lower valve body connected, upper valve body are matched with the upper valve body Complete pneumatic operated valve is formed with lower valve body.Generally upper valve body connects with the mode that lower valve body is connected by screw bolts.

Specifically, described lower valve body includes lower house, the lower valve pneumatic cavity and lower valve gas storage that lower house is communicated with Chamber；Coupled piston is provided with lower valve pneumatic cavity, the upper end of coupled piston is provided with the upper connector of connection upper valve chamber seal, connection The lower end of piston is provided with piston head, piston head be located at lower valve pneumatic cavity with the connected entrance of lower valve air storing cavity, coupled piston, on Connector, piston head insertion；Upper valve pneumatic cavity and lower valve pneumatic cavity complement each other to form closed pneumatic cavity.

Lower valve air storing cavity is provided with lower valve chamber seal, and seal closing lower valve pneumatic cavity and the company of lower valve air storing cavity Port, lower valve air storing cavity are additionally provided with the lower valve gasket positioned at lower valve chamber seal top, are enclosed on lower valve chamber seal Lower Valve seal, the lower valve spring being placed between lower valve chamber seal and lower Valve seal, the lower valve plug for being placed in lower valve its lower part, The lower valve block piece being connected with lower valve plug；

Lower valve gasket is ring-type, is coaxially disposed with lower Valve seal, and lower valve gasket is fixed on the pneumatic chamber of lower valve and stored up with lower valve At air cavity connector；And the intermediate throughholes of lower valve gasket allow piston head to pass through.

Lower house is provided with lower valve air gate and lower valve air inlet, and lower valve air gate connects lower valve pneumatic cavity, lower valve air inlet Connect lower valve air storing cavity.

Further, described lower valve chamber seal is the sleeve with air gap washer, and air gap washer covers piston head Air gap between connected entrance.

Coupled piston can carry out up and down, and high limit position, piston head and connected entrance are located under coupled piston normality Flush or positioned at the edge of upper chamber one end of connected entrance, the now closed connected entrance of air gap washer, lower valve pneumatic cavity and lower valve storage Absolutely gas-tight is kept between air cavity；In skidding, the gases at high pressure of upper chamber enter pneumatic cavity, and coupled piston is in pneumatic cavity Gas pressure under move downward, piston head promotes lower valve chamber seal, and air gap washer is opened on top, lower valve pneumatic cavity and lower valve storage Connected between air cavity, the gas in lower valve pneumatic cavity enters lower valve air storing cavity by connected entrance, and is discharged by lower valve air inlet.

Further, described lower valve spring is volute spring, one end of lower valve spring slot and lower valve chamber seal One end of contact and wide-mouth and lower valve washer contacts.Bigger decrement can be obtained using volute spring, there is provided more sufficient returns Multiple power, the production space of upper valve air storing cavity can be also reduced to a certain extent, there is product to improving the intensity of upper valve body, saving resource Pole meaning.

The effect of lower Valve seal is to keep lower valve spring axially compressed, avoids spring sideslip.

Further, in described upper connector insertion upper valve cavity seal, upper connector outer wall is provided with sealing ring, close Seal is brought into close contact with valve chamber seal internal face.The effect of upper connector is the axial direction for keeping coupled piston to move up and down Property.

Further, described lower Valve seal side wall is provided with sealing ring, and the internal face of sealing ring and lower valve air storing cavity It is brought into close contact.Set the meaning of sealing ring to be to prevent gas leakage, keep air-tightness inside pneumatic operated valve, so as to ensure that pneumatic operated valve works Validity and accuracy.

Further, described lower valve plug insertion lower valve air storing cavity, lower valve plug side is provided with sealing ring, and lower valve air storing cavity Lower valve plug is fixed provided with lower valve plug block piece for inside；Lower valve is provided with the lower connection in insertion lower valve cavity seal beyond the Great Wall Part, lower connector outer wall are provided with sealing ring, and sealing ring is in close contact with lower valve cavity seal internal face, lower connector with The internal run-through of lower valve plug.The effect of lower valve plug is, lower valve cavity seal is kept stable axial direction in axial action Property.

Further, described lower valve plug block piece is snap ring.

Compared with prior art, the beneficial effects of the present invention are：

1. the present invention is detachably connected by upper valve body and lower valve body, it is easy to repair or safeguards.

2. the present invention sets valve element, the headroom of depositing of upper chamber is can adjust, is easy to provide gas during skidding The compensation of pressure, the effect of skidding are more obvious；When skidding is terminated, upper chamber deposits headroom and can gradually contracted Small, air pressure inside reduces according to linear, will not occur to terminate the phenomenon to disappear at once for trampling brake force after brake pedal acts, This technology can be applied to ramp assistant starting, using the teaching of the invention it is possible to provide certain reaction time reacts for driver, brings and preferably drives Sail experience.

3. the present invention sets upper valve chamber seal and lower valve chamber seal, air gap is carried out using air gap washer close Close, the two chambers of connection realize the conversion of connection and isolation, so as to control the circulation of gas, so set control effect good.

4. the present invention sets upper Valve seal control upper valve chamber seal, and using lower Valve seal and lower valve plug control lower valve Chamber seal, compared with prior art, control effect are good, the motion axial direction of upper valve chamber seal and lower valve chamber seal Property is good.

5. the upper valve spring and lower valve spring of the present invention use taper spring, the compression degree of spring is bigger, brings Restoring force is stronger so that before skidding between the upper chamber of pneumatic operated valve and upper valve air storing cavity, lower valve pneumatic cavity and lower valve Air-tightness between air storing cavity is good；When terminating skidding, the reply energy of upper valve cavity seal and lower valve cavity seal Power is extremely strong, cuts off air-flow in time, improves the accuracy of brake.

6. the present invention sets compensation stomata and compensation adjustment device to the first cavity, the second cavity, the 3rd cavity or the Four cavitys carry out atmospheric pressure compensating, increase the air pressure of inside cavity to help the playback of valve element inner carrier and compensation adjustment part, improve Pressure relief capability, be advantageous to the accuracy of skidding next time；Make to avoid being chronically at hyperbaric environment inside pneumatic operated valve simultaneously, Effectively extend the service life of valve body.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached Figure is briefly described, it will be appreciated that the following drawings show but the section Example of the present invention, therefore be not to be taken as pair The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other related accompanying drawings.

Fig. 1 is the sectional view of pneumatic operated valve.

Fig. 2 is pneumatic operated valve stereogram.

Fig. 3 is the partial enlarged drawing at A in Fig. 1.

Fig. 4 is the partial enlarged drawing at B in Fig. 1.

Fig. 5 is the first structure sectional view that valve element is used in embodiment two.

Fig. 6 is second of structure sectional view that valve element is used in embodiment two.

Fig. 7 is the third structure sectional view that valve element is used in embodiment two.

Fig. 8 is the 4th kind of structure sectional view that valve element is used in embodiment two.

Fig. 9 is the first structure sectional view that valve element is used in embodiment three.

Figure 10 is second of structure sectional view that valve element is used in embodiment three.

Figure 11 is the third structure sectional view that valve element is used in embodiment three.

Figure 12 is the 4th kind of structure sectional view that valve element is used in embodiment three.

Figure 13 is the structural representation of compensation adjustment device in embodiment one.

Figure 14 is the sectional view of compensation adjustment device in embodiment one.

Figure 15 is the structural representation of compensation adjustment device in embodiment two.

Figure 16 is the sectional view of compensation adjustment device in embodiment two.

Figure 17 is the structural representation of pneumatic operated valve in embodiment three.

It is entitled corresponding to reference in above-mentioned accompanying drawing：1- upper shells, 101- upper chamber, 102- upper valve air storing cavities, 103- upper valve pneumatic cavities, the upper valve air gates of 104-, 105- upper valve air inlets, 106- passages, 107- spring mountings, 108- drive Piston block piece, 109- upper valve block pieces, 110- compensation stomatas, 2- piston bush, 201- compensation adjustment parts, 3- driving pistons, 301- back-moving springs, 302- counterbalance springs, 4- upper valve chamber seals, the upper valve gaskets of 401-, the upper valve springs of 5-, the upper valve pads of 6- Enclose, 7- lower houses, valve air gate under 700-, 701- lower valve air inlets, 702- lower valve pneumatic cavities, 703- lower valve air storing cavities, 704- Lower valve block piece, 8- coupled pistons, 801- upper connectors, 802- piston heads, 9- lower valve chamber seals, valve gasket under 901-, Valve spring under 10-, Valve seal under 11-, valve plug under 12-, 13- compensation adjustment devices, 1301- compensating pistons, 1302- compensation outlets Mouthful, 1303- Non-return air valves, 1304- adjusting knobs, 1305- elastic parts, 14- compensation air flues.

Embodiment

The invention will be further described below in conjunction with the accompanying drawings.Embodiments of the present invention include but is not limited to following implementation Example.

Embodiment one

As shown in Figure 1 and Figure 2, present embodiment discloses a kind of upper valve body with pressure release compensation, including upper shell 1, upper shell 1 upper chamber 101 being communicated with and upper valve air storing cavity 102, are additionally provided with upper valve pneumatic cavity 103；Valve element is provided with upper chamber 101, Upper valve air storing cavity 102 is provided with upper valve chamber seal 4, the upper valve gasket 401 positioned at the top of upper valve chamber seal 4, is enclosed on chamber Upper Valve seal 6 on the seal of room, the upper valve spring 5 being placed between chamber seal and upper Valve seal 6, it is placed in Valve seal 6 The upper valve block piece 109 of bottom, upper valve pneumatic cavity 103 are located at the bottom of upper shell 1.

Preferably, upper chamber 101 and upper valve air storing cavity 102 are cylindrical chamber, and valve element profile is cylinder.

As shown in Figure 1, Figure 3, valve element is made up of piston bush 2 and driving piston 3；Piston bush 2 is connected with upper shell 1 and piston The first cavity is formed between set 2 and upper shell 1, upper shell 1 is communicated with the compensation stomata 110 of first cavity, compensates stomata 110 connection compensation adjustment devices 13；Driving piston 3 is provided with the shaft shoulder and driving piston 3 includes three sections of upper, middle and lower, drives piston 3 Epimere contacted with the internal face of upper shell 1 or piston bush 2 contacts, stage casing is located in piston bush 2, and hypomere is located at upper chamber 101 At connected entrance between upper valve air storing cavity 102.

Preferably, it be cylindrical step piston to drive piston 3, the driving epimere of piston 3, stage casing, hypomere diameter successively Reduce.

Piston bush 2 is provided with back-moving spring 301 and counterbalance spring 302, and back-moving spring 301 is connected to the upper of driving piston 3 Section, counterbalance spring 302 are connected to spring mountings 107 or compensation adjustment part 201.

Preferably, back-moving spring 301 is connected to the epimere of driving piston 3 among the present embodiment.

Upper shell 1 is provided with upper valve air inlet 105 and upper valve air gate 104, and upper valve air inlet 105 connects upper valve air storing cavity 102, upper valve air gate 104 connects upper chamber 101, and passage 106 is provided between upper chamber 101 and upper valve pneumatic cavity 103.

Preferably, upper valve air inlet 105 and upper valve air gate 104 are circular port, are gone out in upper valve air inlet 105 and upper valve Internal thread is provided with the outside port of gas port 104.

As shown in figure 1, piston bush 2 is cylindrical sleeve tubular or inverted T-shaped sleeve-shaped, piston bush 2 and the internal face of upper chamber 101 It is slidably connected；The quantity of back-moving spring 301 is at least one, when the quantity of back-moving spring 301 is for the moment, back-moving spring 301 is connected to drive The epimere of piston 3；When the quantity of back-moving spring 301 is more than for the moment, back-moving spring 301 is sequentially coaxially located on piston bush 2.

Preferably, piston bush 2 is inverted T-shaped sleeve-shaped, and the quantity of back-moving spring 301 is two.

Compensate stomata 110 and connect the first cavity.

As shown in Figure 13, Figure 14, compensation adjustment device 13 is placed in compensation air flue 14, and compensation air flue 14 connects upper chamber 101 and outside, the compensation gas outlet 1302 of the compensation connection compensation stomata 110 of air flue 14；Compensation adjustment device 13 includes compensation and lived Plug 1301, compensating piston 1301 are located between upper chamber 101 and compensation gas outlet 1302, and the inside of compensating piston 1301 is provided with exhaust Passage and exhaust passage is closed by Non-return air valve 1303；Compensation adjustment device 13 also includes adjusting knob 1304, adjusting knob 1304 are located at the outside port of compensation air flue 14, and pass through elastic parts 1305 between adjusting knob 1304 and compensating piston 1301 Connection.

Preferably, described compensating piston 1301 be one end open, one end carry osculum sleeve, compensating piston 1301 with The internal face of air flue 14 is compensated to be in close contact；Check valve inside compensating piston 1301 is rubber blanket, effect of the rubber blanket in spring Lower covering compresses the osculum in compensating piston 1301, and the lateral edges of rubber blanket inside compensating piston 1301 with leaving air gap.

Preferably, elastic parts 1305 is spring.

The epimere side wall and stage casing side wall for driving piston 3 are provided with sealing ring, the sealing ring of epimere side wall with The internal face of upper chamber 101 is in close contact or is in close contact with the internal face of piston bush 2, the sealing ring and piston bush of stage casing side wall 2 internal faces are in close contact.

The outside of piston bush 2 of valve element is provided with sealing ring, sealing ring and the internal face close contact of upper chamber 101.

Preferably, drive piston 3 epimere side wall and stage casing side wall and piston bush 2 outside be provided with annular it is recessed Groove, sealing ring are arranged in annular groove；Sealing ring is flexible seal ring made of rubber.

The inside of upper chamber 101 is provided with driving piston block piece 108, or driving piston block piece is provided with piston bush 2 108。

Preferably, the inwall of upper chamber 101 is provided with annular groove in the present embodiment, and the inside of groove is provided with driving piston and stopped Part 108.

Upper valve chamber seal 4 is the sleeve with air gap washer, the air gap washer covering driving lower end of piston 3 and connected entrance Between air gap.

Preferably, upper valve chamber seal 4 is T-socket, and air gap washer is arranged on one end of its major part.

Upper valve spring 5 is volute spring, and one end of the upper slot of valve spring 5 is contacted with upper valve chamber seal 4 and wide-mouth One end contacts with upper Valve seal 6.

Upper valve block piece 109, spring mountings 107, driving piston block piece 108 are snap ring.

The present embodiment also discloses a kind of pneumatic operated valve：

As shown in figure 1, with the pneumatic operated valve of previously described upper valve body, including the lower valve connected is matched with the upper valve body Body；Described lower valve body includes lower house 7, the lower valve pneumatic cavity 702 and lower valve air storing cavity 703 that lower house 7 is communicated with；Lower valve Coupled piston 8 is provided with pneumatic cavity 702, the upper end of coupled piston 8 is provided with the upper connector 801 of connection upper valve chamber seal 4, The lower end of coupled piston 8 is provided with piston head 802, and piston head 802 is located at the connection of lower valve pneumatic cavity 702 and lower valve air storing cavity 703 At mouthful, coupled piston 8, upper connector 801, piston head 802 penetrate.

Preferably, lower valve body is attached with upper valve body by bolt, and lower valve pneumatic cavity 702 and upper valve pneumatic cavity 103 are matched somebody with somebody Closed pneumatic cavity is formed after conjunction.

Preferably, coupled piston 8 is cylinder, and upper connector 801 and piston head 802 are cylinder, and coupled piston 8th, upper connector 801 and piston head 802 are coaxially disposed.

As shown in figure 4, lower valve air storing cavity 703 is provided with lower valve chamber seal 9, and seal closing lower valve pneumatic cavity 702 are additionally provided with the lower valve pad positioned at the top of lower valve chamber seal 9 with the connected entrance of lower valve air storing cavity 703, lower valve air storing cavity 703 Piece 901, the lower Valve seal 11 being enclosed on lower valve chamber seal 9, it is placed between lower valve chamber seal 9 and lower Valve seal 11 Lower valve spring 10, the lower valve plug 12 for being placed in the lower bottom of Valve seal 11, the lower valve block piece 704 being connected with lower valve plug 12.

Lower house 7 is provided with lower valve air gate 700 and lower valve air inlet 701, and lower valve air gate 700 connects lower valve pneumatic cavity 702, lower valve air inlet 701 connects lower valve air storing cavity 703.

Preferably, lower valve air gate 700 and lower valve air inlet 701 are circular port, are entered in lower valve air gate 700 and lower valve Internal thread is provided with the outside port of gas port 701.

Lower valve chamber seal 9 is the sleeve with air gap washer, between air gap washer covering piston head 802 and connected entrance Air gap.

Preferably, lower valve chamber seal 9 is T-socket, and air gap washer is arranged on one end of its major part.

Lower valve spring 10 is volute spring, and one end of the slot of lower valve spring 10 contacts and extensively with lower valve chamber seal 9 One end of mouth contacts with lower Valve seal 11.

Upper connector 801 is inserted in upper valve cavity seal, and the outer wall of upper connector 801 is provided with sealing ring, sealing ring and valve Cavity seal internal face is brought into close contact.

Preferably, upper connector 801 is integrally formed with coupled piston 8.

The lower side wall of Valve seal 11 is provided with sealing ring, and the internal face of sealing ring and lower valve air storing cavity 703 is brought into close contact.

Preferably, the side wall of lower Valve seal 11 is provided with annular groove, and sealing ring is arranged in annular groove；Sealing ring It is the flexible gaskets made of elastomeric material.

Lower valve plug 12 is embedded in lower valve air storing cavity 703, and the lower side of valve plug 12 is provided with sealing ring, and inside lower valve air storing cavity 703 Lower valve plug 12 is fixed provided with the lower block piece of valve plug 12；Lower valve plug 12 is provided with the lower company in insertion lower valve cavity seal Fitting, lower connector outer wall is provided with sealing ring, and sealing ring is in close contact with lower valve cavity seal internal face.

Preferably, lower connector is cylinder, and lower connector is integrally formed with lower valve plug 12.

Preferably, lower connector outer wall, the side of lower valve plug 12 are provided with annular groove, and sealing ring is set in groove； Sealing ring is the flexible gaskets made of elastomeric material.

The lower block piece of valve plug 12 is snap ring.

It is the full content of the present invention above, its operation principle is：

Mode as described above assembles pneumatic operated valve, while upper valve air inlet 105 is connected to brake air pump, and upper valve goes out Gas port 104 connects check valve and is connected to gas receiver；Lower valve air gate 700 is connected to gas receiver, and lower valve air inlet 701 is connected to Brake chamber.

During normal driving automobile, the gas that upper valve air inlet 105 enters is concentrated on inside upper valve air storing cavity 102；Lower valve is entered The gas that gas port 701 enters enters lower valve air storing cavity 703.

When stepping on automobile brake pedal, pedal force is passed to by driving piston 3, driving by the drive link of automotive interior Piston 3 down moves, and contacts and promotes upper valve chamber seal 4 to move downward, and driving piston 3 connects with upper valve chamber seal 4 Contacting surface seal, now upper chamber 101 connects with upper valve air storing cavity 102, brake air pump in gases at high pressure pass sequentially through air inlet, Upper valve air storing cavity 102, connected entrance, upper chamber 101, pneumatic cavity；

When reaching certain air pressure in pneumatic cavity, coupled piston 8 is down moved, and piston head 802 is contacted and promoted downwards Lower valve chamber seal 9, the contact surface of piston head 13 and lower valve chamber seal 9 seal；Now lower valve pneumatic cavity 702 and lower valve Air storing cavity 703 connects；Gases at high pressure in gas receiver pass through lower valve air inlet 701, lower valve air storing cavity 703, connected entrance, lower valve gas Dynamic chamber 702, lower valve air gate 700 realize skidding into brake chamber；Gas passes through upper valve outlet in upper chamber 101 simultaneously Mouth 104, which is discharged to up to another brake chamber, realizes skidding.

When unclamping automobile brake pedal, driving piston 3 playbacks in the presence of upper valve spring 5, and upper chamber 101 stores up with upper valve Air cavity 102 recovers state of isolation, and driving piston 3 air gap, upper chamber 101 and upper valve occurs with the contact surface of upper valve chamber seal 4 Gas in pneumatic cavity 103 enters the hollow inside of upper valve chamber seal 4 by air gap and is down discharged into coupled piston 8 Portion, and discharged by lower valve plug 12；Now coupled piston 8 is up moved until returning back to normality in the presence of lower valve spring 10 There is air gap in position, the contact surface of piston head 13 and lower valve chamber seal 9, lower valve pneumatic cavity 702 with lower valve air storing cavity 703 Gas lower valve body down into the inside of lower valve plug 12 and is discharged by the air gap.

In above process, movable piston bush 2 is act as：Step on driving piston 3 and move downward promotion upper valve chamber Seal 4 connects upper chamber 101 and upper valve air storing cavity 102, and piston bush 2 moves on the net after air-flow enters upper chamber 101, increases Upper chamber 101 deposits headroom, avoids air pressure instantaneous value in upper chamber 101 excessive；In the process that coupled piston 8 moves upwards In, as upper valve pneumatic cavity 103 deposits the reduction of headroom, piston bush 2 continues up, and increase upper chamber 101 deposits gas sky Between, depositing the entirety of upper chamber 101 and upper valve pneumatic cavity 103, headroom is constant, then air pressure size keeps fixing, and will not increase connection The air pressure resistance that piston 8 is moved upwards, coupled piston 8 are easier to playback, also can be smoothly vented.

Compensation adjustment device 13 is act as, and the gas of upper chamber 101 enters the first cavity by compensating stomata 110, There is upward active force to driving piston 3, there is downward active force to piston bush 2, can play and keep away in braking procedure Exempt from brake force increases excessive situation at once, can reach the effect of wheel anti-lock.Embodiment two

Present embodiment discloses a kind of pneumatic operated valve, the building block and connected mode and embodiment of pneumatic operated valve in the present embodiment Identical in one, its difference is：

In the present embodiment, upper valve body employs the different valve elements and compensation adjustment device of structure.

As shown in Figure 5, Figure 6, the valve element in the present embodiment, piston bush 2 be longitudinal cross-section be " mountain " font sleeve, piston Set 2 is fixedly connected with upper chamber 101；The inside of piston bush 2 forms the second cavity with driving piston 3, is provided with and resets in the second cavity Spring 301, the upper end of back-moving spring 301 is connected to the driving epimere of piston 3 and lower end is connected to piston bush 2；The outer wall of piston bush 2 with it is upper The internal face of housing 1 forms upper end closed, the 3rd cavity of lower ending opening, and compensation adjustment part 201, the 3rd chamber are provided with the 3rd cavity The counterbalance spring 302 of connection compensation adjustment part 201 and the 3rd cavity top end is additionally provided with vivo；Described compensation adjustment part 201 is The internal face of back-up ring, back-up ring and the 3rd cavity is in close contact.

Preferably, the side wall of compensation adjustment part 201 is provided with annular groove, and sealing ring is provided with groove.Sealing ring makes The flexible gaskets made of elastomeric material.

As shown in Figure 7, Figure 8, in the present embodiment, compensate stomata 110 and connect the 3rd cavity, also connect the second cavity.

As shown in Figure 15, Figure 16, compensation adjustment device 13 is placed in compensation air flue 14 in the present embodiment, and compensation air flue 14 connects Outside logical upper chamber 101 and lower valve body；Compensate the compensation gas outlet 1302 of the connection compensation stomata 110 of air flue 14；Compensation adjustment fills Putting 13 includes compensating piston 1301 and adjusting knob, and adjusting knob 1304 adjusts rotation located at the outside port for compensating air flue 14 Connected between button 1304 and compensating piston 1301 by elastic parts 1305.

Elastic parts 1305 includes counterbalance spring, compensation catch, compensation screw, and counterbalance spring and compensation catch are located at air flue Interior, counterbalance spring one end contacts with compensating piston 1301, and the other end contacts with compensation catch；Compensation screw one end is fixed on regulation On knob 1304 and the other end props up compensation catch.

Preferably, the inside of compensating piston 1301 is plugging structure, compensates and is provided with pressure release on catch and adjusting knob 1304 Hole.

Embodiment three

In the present embodiment, upper valve body employs the different valve element of structure, while employs the compensation of different connected modes Adjusting means 13.

As shown in Figure 9, Figure 10, the valve element in the present embodiment, piston bush 2 is the sleeve that longitudinal cross-section is " mountain " font, living Plug sleeve 2 is slidably connected with upper chamber 101, and the inside of piston bush 2 forms the second cavity with driving piston 3, is provided with the second cavity multiple Position spring 301, the upper end of back-moving spring 301 is connected to the driving epimere of piston 3 and lower end is connected to piston bush 2；In the outer wall of piston bush 2 Portion is provided with upper end closed, the 4th cavity of lower ending opening, is provided with compensation adjustment part 201 in the 4th cavity, is also set in the 4th cavity There is the counterbalance spring 302 of connection compensation adjustment part 201 and the 4th cavity top end；Described compensation adjustment part 201 is back-up ring, back-up ring It is in close contact with the internal face of the 4th cavity.

As shown in Figure 11, Figure 12, in the present embodiment, compensation stomata 110 connects the 4th chamber where back-moving spring 301 Body, also connect the second cavity.

As shown in figure 17, compensation adjustment device 13 is placed in compensation air flue 14, and compensation air flue 14 connects upper valve air storing cavity 102 Outside upper valve body；Compensate the compensation gas outlet 1302 that air flue 14 connects compensation adjustment device 13；Compensation adjustment device 13 includes Compensating piston 1301 and adjusting knob 1304, adjusting knob 1304 are located at the outside port of compensation air flue 14, and adjusting knob Connected between 1304 and compensating piston 1301 by elastic parts 1305.

The operation principle of this pneumatic operated valve is identical with embodiment one, just repeats no more herein.

According to above-described embodiment, the present invention can be realized well.What deserves to be explained is based on above-mentioned design principle, it is Solves same technical problem, some made on architecture basics disclosed in this invention are without substantial change or profit Color, used technical scheme essence is still as the present invention, therefore it should also be as within the scope of the present invention.

Claims

1. the upper valve body with pressure release compensation, including upper shell (1), the upper chamber (101) and upper valve storage that upper shell (1) is communicated with Air cavity (102), it is additionally provided with upper valve pneumatic cavity (103)；Valve element is provided with upper chamber (101), upper valve air storing cavity (102) is provided with upper valve Chamber seal (4), the upper valve gasket (401) positioned at upper valve chamber seal (4) top, the upper valve being enclosed on chamber seal Packing ring (6), the upper valve spring (5) being placed between upper valve chamber seal (4) and upper Valve seal (6), it is placed under Valve seal (6) The upper valve block piece (109) in portion, upper valve pneumatic cavity (103) are located at the bottom of upper shell (1)；It is characterized in that：

Valve element is made up of piston bush (2) and driving piston (3)；Piston bush (2) be connected with upper shell (1) and piston bush (2) with it is upper Housing forms the first cavity between (1)；Upper shell (1) is communicated with the compensation stomata (110) of the first cavity, compensates stomata (110) compensation adjustment device (13) is connected；

Driving piston (3) is provided with the shaft shoulder, and including three sections of upper, middle and lower, epimere and upper shell (1) internal face of driving piston (3) Contact or piston bush (2) contact, stage casing are located in piston bush (2), and hypomere is located at upper chamber (101) and upper valve air storing cavity (102) at the connected entrance between；

Piston bush (2) is provided with back-moving spring (301) and counterbalance spring (302), and back-moving spring (301) one end is connected to piston bush (2), the other end is connected to the epimere of driving piston (3)；Counterbalance spring (302) one end is connected to piston bush (2), is connected to spring Fixture (107) or compensation adjustment part (201)；

Upper shell (1) is provided with upper valve air inlet (105) and upper valve air gate (104), upper valve air inlet (105) connection upper valve gas storage Chamber (102), upper valve air gate (104) connection upper chamber (101), it is provided between upper chamber (101) and upper valve pneumatic cavity (103) logical Stomata (106).

2. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described piston bush (2) is cylindricality Sleeve-shaped or inverted T-shaped sleeve-shaped, piston bush (2) are slidably connected with upper chamber (101) internal face；Back-moving spring (301) quantity At least one.

3. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described piston bush (2) is bilayer Sleeve, the internal layer bottom of piston bush (2) are connected with outer bottom, and groove, piston bush (2) and epicoele are formed between internal layer and outer layer Room (101) is fixedly connected；Piston bush (2) is internal to form the second cavity with driving piston (3), and back-moving spring is provided with the second cavity (301), back-moving spring (301) upper end is connected to driving piston (3) epimere and lower end is connected to piston bush (2)；Piston bush (2) is outside Wall forms upper end closed, the 3rd cavity of lower ending opening with upper shell (1) internal face, and compensation adjustment part is provided with the 3rd cavity (201) counterbalance spring (302) of connection compensation adjustment part (201) and the 3rd cavity top end, is additionally provided with the 3rd cavity；Described Compensation adjustment part (201) is back-up ring, and the internal face of back-up ring and the 3rd cavity is in close contact.

4. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described piston bush (2) is bilayer Sleeve, the internal layer bottom of piston bush (2) are connected with outer bottom, and groove, piston bush (2) and epicoele are formed between internal layer and outer layer Room (101) is fixedly connected, and piston bush (2) is internal to form the second cavity with driving piston (3), and back-moving spring is provided with the second cavity (301), back-moving spring (301) upper end is connected to driving piston (3) epimere and lower end is connected to piston bush (2)；Piston bush (2) is outside Pars intramuralis is provided with upper end closed, the 4th cavity of lower ending opening, and compensation adjustment part (201), the 4th cavity are provided with the 4th cavity Inside it is additionally provided with the counterbalance spring (302) of connection compensation adjustment part (201) and the 4th cavity top end；Described compensation adjustment part (201) it is back-up ring, the internal face of back-up ring and the 4th cavity is in close contact.

5. the upper valve body with pressure release compensation according to claim 3 or 4, it is characterised in that described compensation stomata (110) The first cavity, the 3rd cavity or the 4th cavity are connected, also connects the second cavity.

6. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described compensation adjustment device (13) It is placed in compensation air flue (14), outside compensation air flue (14) connection upper chamber (101) and upper valve body, or compensation air flue (14) is even Outside logical upper valve air storing cavity (102) and upper valve body；Compensate the compensation gas outlet of air flue (14) connection compensation adjustment device (13) (1302)；Compensation adjustment device (13) includes compensating piston (1301) and adjusting knob (1304), and adjusting knob (1304) is located at The outside port of air flue (14) is compensated, and passes through elastic parts (1305) between adjusting knob (1304) and compensating piston (1301) Connection.

7. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that be provided with inside compensating piston (1301) Exhaust passage and exhaust passage are closed by Non-return air valve (1303).

8. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described upper chamber (101) is internal Piston block piece (108) is driven provided with being provided with driving piston block piece (108), or piston bush (2).

9. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described upper valve chamber seal (4) it is the sleeve with air gap washer, air gap of the air gap washer covering driving piston (3) between lower end and connected entrance.

10. the upper valve body according to claim 1 with pressure release compensation, it is characterised in that described upper valve spring (5) is cone Shape spring, one end of upper valve spring (5) slot is contacted with upper valve chamber seal (4) and one end of wide-mouth and upper Valve seal (6) Contact.

11. a kind of pneumatic operated valve of upper valve body using with pressure release compensation any one of claim 1-10, including with institute State the lower valve body of upper valve body matching connection；Characterized in that, described lower valve body includes lower house (7), lower house (7), which is provided with, to be connected Logical lower valve pneumatic cavity (702) and lower valve air storing cavity (703)；Coupled piston (8) is provided with lower valve pneumatic cavity (702), linkage is lived The upper end for filling in (8) is provided with the upper connector (801) of connection upper valve chamber seal (4), and the lower end of coupled piston (8) is provided with piston Head (802), piston head (802) are located at the connected entrance of lower valve pneumatic cavity (702) and lower valve air storing cavity (703)；Coupled piston (8), upper connector (801), piston head (802) insertion；

Lower valve air storing cavity (703) is provided with lower valve chamber seal (9), and the seal is located at lower valve pneumatic cavity (702) and lower valve The connected entrance of air storing cavity (703), lower valve air storing cavity (703) are additionally provided with the lower valve gasket positioned at lower valve chamber seal (9) top (901) the lower Valve seal (11), being enclosed on lower valve chamber seal (9), is placed in lower valve chamber seal (9) and lower Valve seal (11) lower valve spring (10) between, the lower valve plug (12) for being placed in lower Valve seal (11) bottom, are connected down with lower valve plug (12) Valve block piece (704)；

Lower house (7) is provided with lower valve air gate (700) and lower valve air inlet (701), and lower valve air gate (700) connection lower valve is pneumatic Chamber (702), lower valve air inlet (701) connection lower valve air storing cavity (703).

12. pneumatic operated valve according to claim 11, it is characterised in that described lower valve chamber seal (9) is with gas The sleeve of gap packing ring, air gap of the air gap washer covering piston head (802) between connected entrance.

13. pneumatic operated valve according to claim 11, it is characterised in that described lower valve spring (10) is volute spring, under One end of the slot of valve spring (10) contacts with lower valve chamber seal (9) and one end of wide-mouth contacts with lower Valve seal (11).

14. pneumatic operated valve according to claim 11, it is characterised in that described upper connector (801) insertion upper valve cavity In seal, upper connector (801) outer wall is provided with sealing ring, and sealing ring is brought into close contact with valve chamber seal internal face.

15. pneumatic operated valve according to claim 11, it is characterised in that the embedded lower valve air storing cavity of described lower valve plug (12) (703), lower valve plug (12) side is provided with sealing ring, and lower valve plug (12) block piece is provided with inside lower valve air storing cavity (703) under Valve plug (12) is fixed；Lower valve plug (12) is provided with the lower connector in insertion lower valve cavity seal, lower connector outer wall Sealing ring is provided with, and sealing ring is in close contact with lower valve cavity seal internal face；Lower connector is interior with lower valve plug (12) Portion penetrates.