CN207565574U - A kind of band shifts to an earlier date the trailer diaphragm type control valve of pre- brake function - Google Patents

Abstract

The utility model is related to the trailer diaphragm type control valves that a kind of band shifts to an earlier date pre- brake function, include valve body, it is in criss-cross chamber that valve inner, which is equipped with cross section, it is equipped in the middle part of chamber and chamber is bisected into two equal left sides of volume, the demarcation strip of right chamber, the admission line being connect with chamber lower end is equipped in the middle part of demarcation strip, the gas outlet connected with outer wheels side valve and the air inlet connected with air source are equipped with outside valve body, air inlet is set to chamber lower end and is connected with admission line, the opposite diaphragm type piston component of braking gas for setting up to enter valve inner from air inlet for control and lead to gas outlet is equipped at left and right sides of chamber, valve body is connected with the pre- brake apparatus in advance for it being controlled to start or close by brake signal lamp on air inlet top, the beneficial effects of the utility model are：Using the valve body of diaphragm type piston component, not only throughput is big, and braking is quick but also service life is long, pre- brake apparatus to greatly improve the life support of driver during brake in advance.

Description

A kind of band shifts to an earlier date the trailer diaphragm type control valve of pre- brake function

Technical field

The utility model is related to the brake system control valves of trailer, and in particular to a kind of band shifts to an earlier date the trailer film of pre- brake function Chip control valve.

Background technology

As China's highway backbone network has basically formed, there is the large-tonnage of apparent ton kilometre cost advantage, carry Goods automobile and long wheelbase semi-trailer, trailer also increase year by year, and since the wheelbase of above-mentioned vehicle increases, brake piping also adds accordingly Long, to the long wheelbase vehicle run at high speed, reaction time lag, the brake force deficiency of air braking system are still main problem.

And existing Double-pipeline trailer brake valve exist trailer braking protection valve time lag when overloaded, braking feel like jelly, point braking or The brake force needed for long wheelbase vehicle cannot be met during semi-brake, there are trailers during braking to hit main vehicle phenomenon, and it is tight to increase trailer Anxious relay valve is unloaded, and it is serious tread flaking serious phenomenon, tire wear occur, while causes braking effect bad, and especially weather is disliked It is bad, be susceptible to traffic accident when road conditions are bad.

At present, widely applied new car extension control valve is complicated in the prevalence of manufacturing process, and failure is more, and sensitivity is low, Cold season easily freezes, and easily blocks, and the easy corrosion of piston causes to block, and when operation makes braking retardation return or not occur either Gas leakage, hand braking the deficiencies of being difficult to unclamp, above-mentioned drawback annoying driver, even if thinking the Wei Bai of more advanced import Section's product, use when ventilation flow rate, it is still unsatisfactory in reliability and durability.

And even if ventilation flow rate during brake is met the requirements, but since trailer is made of two sections of car bodies, headstock portion and company The trailer portion for being connected to headstock driver's cabin rear end often always exists weight difference, and when trailer full load, the weight in trailer portion is much larger than Headstock portion, when occurring emergency braking in running at high speed, the cargo that trailer portion is fully loaded with is since its inertia is much larger than the headstock in front Portion the consequence for squeezing driver's cabin forward will occurs, if transport cargo is the cylinders such as steel pipe, will cause serious accident, and work as Since tail portion does not have cargo when unloaded, when run at high speed middle emergency braking when can cause driver from traveling storehouse in fly out.

Utility model content

The technical problem to be solved by the utility model is in view of the above shortcomings of the prior art,

Offer throughput is big, braking is quick, service life is long, speed can be reduced to perfect condition before skidding A kind of band to brake again shifts to an earlier date the trailer diaphragm type control valve of pre- brake function.

To achieve the above object, the utility model provides following technical solution：A kind of band shifts to an earlier date the trailer of pre- brake function Diaphragm type control valve, includes valve body, it is characterised in that：The valve inner is equipped with cross section in criss-cross chamber, described Chamber up and down, left and right opening setting, be equipped in the middle part of the chamber and chamber be bisected into the equal left and right chamber of two volumes Demarcation strip, the demarcation strip middle part are equipped with the admission line being connect with chamber lower end, and the valve body outside is equipped with and outer wheels side The gas outlet of valve connection and the air inlet connected with air source, the air inlet are set to chamber lower end and are connected with admission line, The opposite braking gas for setting up to enter valve inner from air inlet for control and lead to gas outlet is equipped at left and right sides of the chamber Diaphragm type piston component, the valve body be connected on air inlet top by brake signal lamp control its start or close carry Preceding pre- brake apparatus, the pre- brake apparatus in advance can be to being braked in advance before skidding.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The diaphragm type is lived Plug assembly includes the cylinder head connected with chamber or so opening, and the valve body top is equipped with exhaust outlet, and the valve body is close The first annulus, the second annulus and third annulus that diameter becomes smaller successively are provided at cylinder head, the first annulus side wall is equipped with The exhaust notch connected with exhaust outlet, the outlet that second annulus is equipped with the first annulus of perforation and is connected with gas outlet lack Mouthful, second annulus is equipped with the connector with chamber close to outlet indentation, there, and the diaphragm type piston includes diaphragm, The diaphragm is abutted against with the second annulus circumferential surface.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The brake pre- in advance Device includes pre- brake apparatus cover, pre- brake apparatus ontology and the link block for being installed on valve body, and the valve body is equipped with connecting The first guide channel that block is connected, the other end of the opposite connection link block of first guide channel are connected with connector, institute The other end for stating link block the first guide channel of opposite connection is connected with pre- brake apparatus ontology, is additionally provided on the valve body and the right side The second guide channel that chamber is connected, the other end and pre- brake apparatus ontology of the opposite connection right chamber of second guide channel It is connected.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The diaphragm is close The one side of chamber is equipped with the convex block that cross section is in equilateral triangle distribution, and the one side abutting for being equipped with convex block in diaphragm in the chamber has Diaphragm return spring, the diaphragm return spring other end are connected to valve inner.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The diaphragm type is lived Plug assembly has further included air tube of bamboo in granary device, and the air tube of bamboo in granary device includes air tube of bamboo in granary ontology, and the air tube of bamboo in granary body interior is connected with air tube of bamboo in granary Inner sleeve, the air tube of bamboo in granary inner sleeve are in contact with diaphragm return spring circumferential surface.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The chamber lower portion Equipped with electromagnetic coil, the intake interface being connected with air inlet and chamber interior is offered in the middle part of the electromagnetic coil.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The gas outlet Quantity is four.

The trailer diaphragm type control valve that a kind of above-mentioned band shifts to an earlier date pre- brake function can be further arranged to：The exhaust outlet Quantity is four.

The operation principle of the utility model is：By the air source being connected at electromagnetic coil intake interface, lead in valve body Inlet charge is crossed, gas leads to the diaphragm type piston group set at left and right sides of valve inner by the admission line of demarcation strip Part controls the equal chamber of two volumes, the diaphragm type piston of left and right sides setting since chamber is divided by demarcation strip Air inflow in component is equal, and valve body is being provided with the first annulus, the second circle that diameter becomes smaller successively at cylinder head Ring and third annulus, the first annulus side wall are equipped with the exhaust notch connected with exhaust outlet, and the second annulus is equipped with the first circle of perforation Ring and the outlet notch connected with gas outlet, the second annulus are equipped with the connector with chamber close to outlet indentation, there, pass through It is outlet or exhaust after ECU control air inlets, when outlet passes through the first annulus of perforation set on the second annulus and and gas outlet Gas is led to gas outlet by the outlet notch of connection, then by the brake valve in the outer tire that is connect with gas outlet to trailer It is braked, gas is passed through exhaust outlet by the exhaust notch connected with exhaust outlet set if exhaust by the first annulus side wall Exits valve body, since the utility model is using the mode of diaphragm, diaphragm occupies empty in the traditional piston component of chamber internal ratio Between it is small, the capacity allowed for naturally used by the utility model in diaphragm type piston component is bigger than traditional piston component, Big the formed braking effect of capacity is significantly better than traditional piston component, and braking is quick, and due to being provided with diaphragm return Spring, therefore diaphragm type piston component is longer in the service life of valve inner.

And what is set is electrically connected between pre- brake apparatus and brake signal lamp in advance, right chamber and the wheel side valve phase at trailer rear portion Connection, pre- brake apparatus ontology are equipped with sensor, and when detecting that speed is more than preset value, driver steps on brake pedal When lighting brake lamp, pre- brake module starts work simultaneously, by trailing wheel being driven to stop to carrying out control wheel side valve in right chamber Vehicle, when speed is reduced to preset value, module from service of stopping in advance, it is exactly normal stop to be further continued for stepping on brake pedal at this time Vehicle process, due to reducing the trailer speed at rear portion in advance, will be more safe and reliable in normal braking.

The beneficial effects of the utility model are：Using the valve body of diaphragm type piston component, not only throughput is big, and braking is quick And service life is long, backlash is prevented there is provided pre- brake apparatus in advance, to driver when unloaded gentle, safety arrestment to brake Life support greatly improve, can promote the use of.

The utility model is described in further detail with reference to the accompanying drawings and examples.

Description of the drawings

Fig. 1 is the stereoscopic schematic diagram 1 of the utility model embodiment.

Fig. 2 is the stereoscopic schematic diagram 2 of the utility model embodiment.

Fig. 3 is the cut-away view for facing state of the utility model embodiment.

Fig. 4 is the valve body structure schematic diagram of the utility model embodiment.

Fig. 5 is the diagrammatic cross-section of the backsight state of the utility model embodiment.

Fig. 6 is the explosive view of the utility model embodiment.

Fig. 7 is the diagrammatic cross-section of the side view state of the utility model embodiment.

Specific embodiment

Referring to shown in Fig. 1-Fig. 7：A kind of band shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, includes valve body 1, valve body 1 is internally provided with cross section in criss-cross chamber 2, and chamber is about 2, left and right opening setting, and 2 middle part of chamber is equipped with chamber 2 The demarcation strip 3 of two equal left chamber of volume 21 and right chamber 22 is bisected into, 3 middle part of demarcation strip is equipped with to be connected with 2 lower end of chamber The admission line 31 connect, 1 outside of valve body are equipped with four gas outlets 11 connected with outer wheels side valve and the air inlet connected with air source Mouth 12, air inlet 12 is set to 2 lower end of chamber and is connected with admission line 31, and 2 left and right sides of chamber is equipped with opposite set up and is used for The diaphragm type piston component of braking gas for entering 1 inside of valve body from air inlet 12 and leading to gas outlet 11 is controlled, valve body 1 is in air inlet 12 tops of mouth are connected with pre- brake apparatus in advance, and diaphragm type piston component includes the cylinder head 4 with the opening connection of chamber 2 or so, 1 top of valve body is set there are four exhaust outlet 13, valve body 1 be provided at cylinder head 4 the first annulus 14 that diameter becomes smaller successively, Second annulus 15 and third annulus 16,14 side wall of the first annulus are equipped with the exhaust notch 141 connected with exhaust outlet 13, the second annulus 15 are equipped with the first annulus 14 of perforation and the outlet notch 151 connected with gas outlet 11, and the second annulus 15 is close to outlet notch 151 Place is equipped with the connector 152 connected with chamber 2, and diaphragm type piston includes diaphragm 5, and diaphragm 5 offsets with 15 circumferential surface of the second annulus It connects, pre- brake apparatus includes pre- brake apparatus cover 92, pre- brake apparatus ontology 9 and the link block 91 for being installed on valve body 1, valve body in advance 9 are equipped with the first guide channel 17 being connected with link block 91, the other end of 17 opposite connection link block 91 of the first guide channel It is connected with connector 152, the other end of the first guide channel 17 of opposite connection of link block 91 is connected with pre- brake apparatus ontology 9 It is logical, the second guide channel 18 being connected with right chamber 22,18 opposite connection right chamber of the second guide channel are additionally provided on valve body 1 22 other end is connected with pre- brake apparatus ontology 9, and diaphragm 5 is equipped with cross section by the one side of abluminal compartment 2 and is distributed in equilateral triangle Convex block 51, the one side abutting for being equipped with convex block 51 in diaphragm 5 in chamber 2 has diaphragm return spring 6, and diaphragm return spring 6 is another End is connected to inside valve body 1, and diaphragm type piston component has further included air tube of bamboo in granary device, and air tube of bamboo in granary device includes air tube of bamboo in granary ontology 7, air tube of bamboo in granary Ontology 7 is internally connected with air tube of bamboo in granary inner sleeve 71, and air tube of bamboo in granary inner sleeve 71 is in contact with 6 circumferential surface of diaphragm return spring, and 2 lower part of chamber is equipped with electricity Magnetic coil 8,8 middle part of electromagnetic coil offer the intake interface 81 being connected with inside air inlet 12 and chamber 2, pre- brake apparatus Cover 92 sets 1 outside of valve body and is in contact with electromagnetic coil 8.

Claims (8)

1. a kind of band shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, include valve body, it is characterised in that：The valve inner Equipped with cross section in criss-cross chamber, the chamber up and down, left and right opening setting, be equipped in the middle part of the chamber and put down chamber It is divided into the demarcation strip of the equal left and right chamber of two volumes, the air inlet pipe being connect with chamber lower end is equipped in the middle part of the demarcation strip Road, the valve body outside is equipped with the gas outlet connected with outer wheels side valve and the air inlet connected with air source, the air inlet are set It is placed in chamber lower end and is connected with admission line, opposite set up is equipped at left and right sides of the chamber and is entered for controlling from air inlet Valve inner and the diaphragm type piston component for braking gas for leading to gas outlet, the valve body is connected on air inlet top passes through brake Its startup of vehicle Signalized control or the pre- brake apparatus in advance closed, the pre- brake apparatus in advance can be pre- to progress before skidding Brake.

2. a kind of band according to claim 1 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that：It is described Diaphragm type piston component includes the cylinder head connected with chamber or so opening, and the valve body top is equipped with exhaust outlet, the valve Body is provided with the first annulus, the second annulus and the third annulus that diameter becomes smaller successively, first annulus at close cylinder head Side wall is equipped with the exhaust notch connected with exhaust outlet, what second annulus was equipped with the first annulus of perforation and was connected with gas outlet Outlet notch, second annulus are equipped with the connector with chamber close to outlet indentation, there, and the diaphragm type piston includes There is diaphragm, the diaphragm is abutted against with the second annulus circumferential surface.

3. a kind of band according to claim 1 or 2 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that： The pre- brake apparatus in advance includes pre- brake apparatus cover, pre- brake apparatus ontology and the link block for being installed on valve body, the valve body It is equipped with the first guide channel being connected with link block, the other end of the opposite connection link block of first guide channel and connection Mouth is connected, and the other end of the link block the first guide channel of opposite connection is connected with pre- brake apparatus ontology, the valve body On be additionally provided with the second guide channel being connected with right chamber, the other end of the opposite connection right chamber of second guide channel with Pre- brake apparatus ontology is connected.

4. a kind of band according to claim 2 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that：It is described Diaphragm is equipped with the convex block that cross section is in equilateral triangle distribution by the one side of abluminal compartment, and the one of convex block is equipped in diaphragm in the chamber Face, which abuts, diaphragm return spring, and the diaphragm return spring other end is connected to valve inner.

5. a kind of band according to claim 4 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that：It is described Diaphragm type piston component has further included air tube of bamboo in granary device, and the air tube of bamboo in granary device includes air tube of bamboo in granary ontology, and the air tube of bamboo in granary body interior connects Air tube of bamboo in granary inner sleeve is connected to, the air tube of bamboo in granary inner sleeve is in contact with diaphragm return spring circumferential surface.

6. a kind of band according to claim 5 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that：It is described Chamber lower portion is equipped with electromagnetic coil, and the air inlet connecting being connected with air inlet and chamber interior is offered in the middle part of the electromagnetic coil Mouthful.

7. a kind of band according to claim 1 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that：It is described Gas outlet quantity be four.

8. a kind of band according to claim 2 shifts to an earlier date the trailer diaphragm type control valve of pre- brake function, it is characterised in that：It is described Exhaust outlet quantity be four.