CN205801086U - A kind of stepless voltage transformation device, relay valve and ABS combine relay valve - Google Patents

Abstract

This utility model relates to a kind of stepless voltage transformation device, including housing, main valve stem, is sleeved on the diaphragm assembly up and down of main valve stem top and the bottom；Upper diaphragm assembly, main valve stem, lower diaphragm assembly housing hollow is divided into from top to bottom be not attached to each other to lead to upper chamber, the second work chamber, the 3rd work chamber, the 4th work chamber, the 5th work chamber；Arranging high pressure diaphragm in upper chamber, upper chamber is separated into the high-pressure chamber being not attached to lead to and the first work chamber by this high pressure diaphragm；It is provided with communicating passage, logical master cylinder outside the first work chamber between the first work chamber and the 4th work chamber.This utility model also provides for applying the relay valve of said apparatus and ABS to combine relay valve.This ABS combination relay valve can make to directly control the valve of relay valve from the high pressure gas pressure of gascollecting cap cylinder, shortens braking time, improves car braking sensitivity.

Description

A kind of stepless voltage transformation device, relay valve and ABS combine relay valve

Technical field

This utility model relates to automobile brake technical field, and concrete technology is a kind of stepless voltage transformation device, belongs to relay valve Auxiliary device.

This utility model further relates to use the relay valve of above-mentioned stepless voltage transformation device and ABS to combine relay valve.

Background technology

Along with national economy and the fast development of modern industry, road operation is the busiest.The semi-mounted of China's operation at present Tractor accounts for more than the 70% of long-distance transport total amount.For making vehicle safety efficient transportation and reducing accident rate, the system to haulage vehicle Dynamic system proposes requirements at the higher level.Especially large-tonnage cargo vehicle and long wheelbase semi-trailer, the brake system of trailer, it is necessary to Possess highly sensitive, the performances such as each ingredient is reliable.Relay valve is the core component of trailer brake system, servo The performance of valve decides the performance of whole brakes, and therefore, the meaning that optimization improves relay valve is the most great.

Authorization Notice No. be the utility model patent of CN201128412Y provide one can be according to main drive axle, trailer axle Under conditions of load-carrying difference, supply the rational different pressures in skidding room compressed-air actuated stepless voltage transformation device, solve The problem of the asynchronous braking of each bridge.

Authorization Notice No. is that the patent of CN 201736978 U provides a kind of automatic pressure regulation controller for automobile brake, and this is special Profit uses with the patent portfolios collocation of CN201128412Y, can realize the stepless voltage transformation of relay valve, and the operation of driver is easier, Without controlling switch.

Above-mentioned technology, although optimize the performance improving traditional mechanical relay valve, but owing to not having and anti-skid braking system System (Anti-lock Brake System is called for short ABS) combines, and has been not suitable with the market demand.

The patent of Application No. 200510044419.8 discloses a kind of ABS emergency relay valve, this ABS emergency relay valve It is by the basis of the simplest relay valve, increases a solenoid valve.Its drawback is, when electromagnetic valve lost efficacy or broke down Time, relay valve can not keep the controllability of vehicle.

Tradition is equipped with the body portion simple structure of ABS Electromagnetic Control, and there is many unreasonable present situations, concrete table Now one is that to be distributed to the gas channel flow of arrester less than normal, causes braking response to slow, causes braking time to be prolonged Long；Its two be overall structure in order to reach the purpose of anti-" locking ", ECU controls to let out damage and fall substantial amounts of braking pressure so that " embracing Extremely " time period air pressure the most non-" locking " supplements inadequate, thus it is bad to cause overall vehicle to slow down, and brings weight to traffic safety Big hidden danger.

The structure of trailer vehicles is special, and Trailer axle with master cylinder relative distance farther out, makes vehicle when braking from driving The person of sailing steps on brake lever the lag time of about 0.4 second to arrester action, and this time difference seriously governs trailer vehicles Braking effect, be the main reason that relatively extends of trailer vehicles braking distance.

Summary of the invention

For solving the problems referred to above, this utility model provides a kind of stepless voltage transformation device.This device is at CN201128412Y Develop on number patent basis, make trailer or semitrailer in the case of brake line is constant, reduce braking time, shortening Braking distance, improves the sensitivity of car braking.

The technical solution of the utility model is as follows: a kind of stepless voltage transformation device, including housing, the master being placed in housing hollow Valve rod, it is sleeved on the upper diaphragm assembly on main valve stem top, is sleeved on the lower diaphragm assembly of main valve stem bottom；Upper diaphragm assembly, master Valve rod, lower film version assembly housing hollow is divided into from top to bottom be not attached to each other to lead to upper chamber, the second work chamber, the 3rd work Make chamber, the 4th work chamber, the 5th work chamber；One high pressure diaphragm contacted with main valve stem is set in upper chamber, should Upper chamber is separated into the high-pressure chamber being not attached to lead to and the first work chamber by high pressure diaphragm；In the first work chamber and the 4th work Make to be provided with between chamber communicating passage, logical master cylinder outside the first work chamber.

This utility model, on CN201128412Y patent basis, adds the machinery knot of high pressure diaphragm and high-pressure chamber Structure, makes to directly control from the high pressure gas pressure of gascollecting cap cylinder the valve of relay valve, shortens braking time, improve vehicle Sensitivity.

This utility model also provides for a kind of relay valve applying above-mentioned stepless voltage transformation device.Its technical scheme is as follows: a kind of Relay valve, including switch assembly, voltage stabilization and regulation device；Also include above-mentioned stepless voltage transformation device；The main valve stem of stepless voltage transformation device Directly control switch assembly, voltage stabilization and regulation device is connected between the second work chamber and the 5th work chamber.

This utility model also provides for a kind of ABS and combines relay valve, on the basis of above-mentioned relay valve, sets up braking and immediately cuts Enter responding device, it is achieved that brake instant air pressure incision function, shorten braking time, improve car braking sensitivity.

For further enhancing brake control function of the present utility model, relay valve is set up one-level anti-lock response dress Put.By increasing one-level anti-lock responding device, it is possible to decrease overall braking action amount, to release " locking " state.

For further enhancing brake control function of the present utility model, relay valve is set up input air pressure configuration pressure regulation and rings Answer device, while input air pressure can be regulated and controled by this device, reduce overall braking action amount further, " embrace to release further Extremely " state.

For further enhancing brake control function of the present utility model, have additional in the switch assembly left and right sides of relay valve EBD switch assembly.By increasing EBD switch assembly, can the braking moment of balancing vehicle left and right wheels, reach brake force and friction The coupling of power (pull strength), it is ensured that the steady and safety of vehicle.

The ABS combination relay valve that this utility model provides, compared with tradition ABS combination valve, adds voltage stabilization and regulation device With stepless voltage transformation device, make the time that brake is advanced by 0.2 to 0.5 second relatively, initial brake pressure can be made to be rapidly reached Desirable pressure size is braked, and significantly shorten braking distance.This utility model is compared with tradition ABS combination relay valve, more For dramatically different, the ECU in ABS because of cause specific exit control time, this utility model still can with frame for movement prevent Drag the braking effect of tire mode to keep the controllability of vehicle.

Accompanying drawing explanation

Fig. 1 stepless voltage transformation device sectional view；

The relay valve sectional view of Fig. 2 application stepless voltage transformation device；

Fig. 3 is provided with the ABS of braking instant incision responding device and combines relay valve front sectional view

Fig. 4 is provided with one-level anti-lock responding device, the ABS of EBD switch assembly combines relay valve side view cutaway drawing one；

Fig. 5 is provided with the ABS of input air pressure configuration pressure regulation responding device and combines relay valve side view cutaway drawing two；

The A-A of Fig. 6 Fig. 4 is to upwarding cutaway view；

This utility model reference is as follows:

One, stepless voltage transformation device 50:

Lower house 1, upper shell 4, upper cover 6；Main valve stem 5, upper diaphragm assembly 5-3, lower diaphragm assembly 5-1, high pressure diaphragm 5- 4, high-pressure chamber 5-5, the first work chamber 5-6, the second work chamber 5-7, the 3rd work chamber 5-8, the 4th work chamber 5- 9, the 5th work chamber 5-10, pressure ring 5-11；

Two, relay valve:

1, switch assembly 10:

Valve 1-5, normal open air inlet 1-9, air inlet 1-7；

2, voltage stabilization and regulation device 70:

Adjusting apparatus 7-1, pressure maintaining valve upper chamber 7-3, voltage stabilizing piston 7-4, voltage stabilizing module 7-5, voltage stabilizing upper channel 7-6, surely Pressure valve 7-7, contiguous block 7-8, voltage stabilizing lower channel 7-9；

Three, ABS combination relay valve:

1, braking instant incision responding device 60-3:

Passage 6-6, normally closed instant electromagnetic valve 6-7, relief hole 6-8 after valve prepass 6-5, valve；

2, one-level anti-lock responding device 60-1:

Passage 6-4, electromagnetic valve 6-3, relief hole 6-2 after valve prepass 6-1, valve；

3, input air pressure configuration pressure regulation responding device 60-2:

Control pressure channel 6-9, control air pressure air inlet 6-10, configure valve 6-11, valve rod 6-12, valve prepass 6- 13, configure valve module 6-14, passage 6-15 after upper valve, electromagnetic valve 6-16, relief hole 6-17, passage 7-2 after lower valve；

4, EBD switch assembly 30:

Lower house side cover 3, compression spring 3-3, diaphragm assembly 3-4, small valve-rod 3-5, EBD valve 3-6, export pore 3-7, Valve prepass 3-10, passage 3-9 after valve, relay electromagnetic valve 3-8, relays electromagnetic valve 3-11.

Detailed description of the invention

It is better understood from this utility model, below in conjunction with the accompanying drawings with specific embodiment pair for the ease of those skilled in the art This utility model is described in further details, and the description below is only exemplary.

Illustrate: this utility model and the connected relation of external structure:

1, the first external master cylinder of work chamber 5-6 (processing via trailer control valve)；

2, the external high-pressure air source of normal open air inlet 1-9 or main car gas receiver (processing via trailer control valve)；

3, air inlet 1-7 external trailer gas receiver；

4, logical arrester outside output pore 3-7.

One, stepless voltage transformation device embodiments:

What this utility model belonged to relay valve supports the use device.

See Fig. 1, in the present embodiment: lower house 1, upper shell 4, upper cover 6 form housing.

The top of main valve stem 5 has been set with upper diaphragm assembly 5-3, and bottom has been set with time diaphragm assembly 5-1, in main valve stem 5 There is a convex shoulder in portion, and this convex shoulder and upper shell 4 surround the 3rd work chamber 5-8；On upper cover 6, with pressure ring 5-11 by high pressure diaphragm 5-4 presses solidly and covers upper, and so, high pressure diaphragm 5-4 forms high-pressure chamber 5-5 with the cavity on top；High pressure diaphragm 5-4 lower surface Contact with the upper surface of main valve stem 5, when the high pressure diaphragm downward elastic deformation of 5-4 pressurized, valve rod 5 can be promoted to move down.

Upper diaphragm assembly 5-3 is compressed on being spirally connected on face, by lower diaphragm assembly 5-1 of upper cover 6 and upper shell 4 by the present embodiment It is compressed on being spirally connected on face of upper shell 4 and lower house 1, forms two respectively in the both sides up and down of upper diaphragm assembly 5-3 and be not attached to Logical the first work chamber 5-6, the second work chamber 5-7；The both sides up and down of lower diaphragm assembly 5-1 form the 4th working chamber respectively Room 5-9, the 5th work chamber 5-10.Logical master cylinder outside first work chamber 5-6.

Utilize housing compacting diaphragm formation to be not attached to the structure of the work chamber led to each other, can preferably ensure each chamber Air pressure does not leaks.

In order to realize stepless voltage transformation function, it is logical that connection is set between the first work chamber 5-6 and the 4th work chamber 5-9 Road.This utility model is directly provided with through hole in the shaft core position of main valve stem 5 corresponding to two chambers, and this communicating passage also may be used To be arranged on housing, or realized by external pipeline after holing in housing relevant position.But latter two mode is easily caused chamber The leakage of room air pressure, meanwhile, processing technique becomes complicated.

In order to reach the sealed against one another of each work chamber, in the position that main valve stem 5 contacts with housing, sealing ring can be set, Make main valve stem 5 when relative housing moves up and down, it is ensured that the sealing of each chamber.

In order to describe operation principle more easily, in this utility model, define all diaphragm upper chamber and be malleation Chamber, diaphragm lower chamber is vacuum chamber.So, in six work chamber, the second work chamber 5-7 and the 5th work Chamber 5-10 is vacuum chamber, and remaining four chamber is malleation chamber.

Two, relay valve embodiment:

The relay valve that this utility model relates to is mechanical type relay valve, including switch assembly 10, above-mentioned stepless voltage transformation device 50, and voltage stabilization and regulation device 70.In the present embodiment, the housing of three is structure as a whole, and so makes the structure of relay valve more Compact.

The concrete structure of switch assembly 10 is known technology, does not repeats them here.Switch assembly 10 is gas receiver and braking The control switch of room, its operation principle is: when master cylinder opens valve 1-5 by stepless voltage transformation device, the gas of gas receiver Pressure just can be directly entered arrester.

Voltage stabilization and regulation device 70 includes: adjust screw 7-1, pressure maintaining valve upper chamber 7-3, voltage stabilizing piston 7-4, voltage stabilizing module 7- 5, voltage stabilizing upper channel 7-6, controlling valve 7-7, contiguous block 7-8, voltage stabilizing lower channel 7-9.Wherein, voltage stabilizing upper channel 7-6 and second Work chamber 5-7 is connected, and voltage stabilizing lower channel 7-9 and the 5th work chamber 5-10 is connected；Pressure maintaining valve upper chamber 7-3 is according to need Want to connect external air source.

The valve 1-5 of the direct contact switch assembly 10 of main valve stem 5 in stepless voltage transformation device 50；Switch assembly 10 is controlled by Main valve stem 5；When main valve stem 5 moves down, when making valve 1-5 open, the air pressure from gas receiver just can enter arrester and be braked； Voltage stabilization and regulation device 70 is connected between the second work chamber 5-7 and the 5th work chamber 5-10, in stepless voltage transformation device 50 Air pressure regulate and control.

This relay valve, owing to being provided with stepless voltage transformation device 50 and voltage stabilization and regulation device 70 on mechanical realization, not with During ABS combination, still can prevent that the braking effect dragging tire mode is to keep the controllability of vehicle with frame for movement.

Three, ABS combination relay valve embodiment:

Traditional ABS combines relay valve, and its work process is: the extremely braking after vehicle start-up of the ECU system in ABS enables Before, first according to the electrical state of composition electric system, fallible component being carried out self-inspection, detected element includes that wheel speed senses Device open fault, wheel speed sensors short trouble, electromagnetic valve open fault, electromagnetic valve short trouble, electromagnetic valve turn-to-turn short circuit event Barrier and supply voltage abnormal failure.It addition, before not braking in vehicle is properly functioning, ECU can respectively obtain all wheel speeds and pass The access value of sensor, if the wheel speed value difference that ECU has access to is more than certain value (generally 4%), system can export error signal, this Sample ensures that the accuracy rate that system EBD controls.All above components and parts fault is once detected, and ECU can control ABS Total system exits brake unit.

Introduce ABS below in conjunction with Fig. 1 to Fig. 6 and combine relay valve.

The ABS that this utility model provides combines relay valve, and including two large divisions, a part is mechanical valve body portion, one Control unit ECU being divided in ABS.ECU controls the electromagnetic valve of body portion.

Mechanical valve body portion includes switch assembly, voltage stabilization and regulation device, stepless voltage transformation device, braking instant incision response dress Put, input air pressure configures several major parts such as pressure regulation responding device, EBD switch assembly；ECU control unit includes braking instant incision System, one-level anti-lock braking system, two grades of anti-lock braking systems, left and right distribution controls the composition such as EBD system and self-checking system.

ECU control unit in this utility model ABS is arranged on the top of valve body, encapsulates with cabinet, is configured with electricity Device input and output side, input terminal connects wheel speed sensors, brake signal switch and power supply；Lead-out terminal connects electromagnetic valve With information display lamp etc..

Embodiment 1:

Seeing Fig. 3, the ABS that this utility model provides combines relay valve, is to be provided with braking on the upper cover 6 of aforementioned relay valve Instant incision responding device 60-3, this device includes passage 6-6, normally closed instant electromagnetic valve 6-7 after valve prepass 6-5, valve.Before valve Passage 6-5 connects the normal open air inlet 1-9 being connected with high-pressure air source gas receiver, and after valve, passage 6-6 is directly and high-pressure chamber 5-5 is connected, and normally closed instant electromagnetic valve 6-7 is arranged on after valve prepass and valve between passage.In the ECU control unit of ABS, increase It is provided with the instant incision system of braking.Native system controls the open and close of normally closed instant electromagnetic valve 6-7.

On braking instant incision responding device 60-3, being additionally provided with relief hole 6-8, this hole leads directly to air.

During normality, normally closed instant electromagnetic valve 6-7 is to close, and after valve prepass 6-5 and valve, passage 6-6 is not attached to lead to；Valve Rear passage 6-6 is connected with relief hole 6-8.When normally closed instant electromagnetic valve 6-7 is controlled to open by ECU, after valve prepass 6-5 and valve Passage 6-6 connects, and relief hole 6-8 is closed simultaneously so that after valve, the air pressure of passage 6-6 can not be then exhausted from.When normally closed instant electricity After magnet valve 6-7 closes, after valve, passage 6-6 is connected with relief hole 6-8, and its interior air pressure can be discharged.

The instant relay valve cutting responding device 60-3 of braking is installed, is one of ABS combination relay valve technical scheme, its Work process and principle are as follows: when driver steps on clamping handle, from the air pressure of master cylinder because of long-pending by the long pipe appearance of a street Impact, the pressure in the first work chamber 5-6 is the process of a kind of " gradual change ", and this process of can not " suddenling change " is and driver Wish want to run counter to, say, that this process time is the longest, and car braking sensitivity is the lowest.In order to overcome this shortcoming, The normal open air inlet 1-9 high-pressure side that we will connect with gas receiver, by passage 6-6 after valve prepass 6-5, valve through normally closed be Time electromagnetic valve 6-7 be communicated to malleation high-pressure chamber 5-5.The ECU that normally closed instant electromagnetic valve 6-7 is controlled by ABS.Normally closed instant electricity Magnet valve 6-7 is accepting braking moment, ECU control to open the time of about 0.3 second, and the air pressure from gascollecting cap cylinder acts on immediately On high pressure diaphragm 5-4, promote main valve stem 5 to move down, make the valve 1-5 in switch assembly 10 open immediately, this instant air pressure The time making brake relatively be advanced by 0.2 second to 0.5 second, significantly shorten braking distance.After 0.3 second, instant air pressure Disappear (electromagnetic valve 6-7 close, after high-pressure chamber 5-5 and valve, the air pressure in passage 6-6 releases by relief hole 6-8), continuation by The air pressure of master cylinder passes through the first work chamber 5-6 relay control bound bar 5.

Embodiment 2:

See Fig. 4, on upper cover 6, be provided with one-level anti-lock responding device 60-1.This one-level anti-lock responding device 60-1 Including the valve prepass 6-1 being connected with the first work chamber 5-6, passage 6-after the valve being connected with the 3rd work chamber 5-8 4, straight open to atmosphere relief hole 6-2；Connect between relief hole 6-2 with passage 6-4 after valve prepass 6-1, valve a normally closed electromagnetism Valve 6-3, electromagnetic valve 6-3 are controlled by the ECU in ABS, control the company of passage 6-4 and relief hole 6-2 after valve prepass 6-1, valve Lead to or cut off.In the ECU control unit of ABS, have additional one-level anti-lock braking system.Native system controls electromagnetic valve 6-3.In normality Under, electromagnetic valve 6-3 is normally closed.

During normality, electromagnetic valve 6-3 is to close, and the air pressure in the first work chamber 5-6 and the 3rd work chamber 5-8 can not Discharged by passage 6-4 after valve prepass 6-1, valve；When electromagnetic valve 6-3 receive the signal from ECU open time, valve prepass After 6-1, valve, passage 6-4 is connected with relief hole 6-2 simultaneously, the air pressure in the first work chamber 5-6 and the 3rd work chamber 5-8 Just can discharge.

Owing to being provided with communicating passage between the first work chamber 5-6 and the 4th work chamber 5-9, therefore the 4th working chamber The pressure of room 5-9 pressure and the first work chamber 5-6 can be discharged simultaneously.

The operation principle of the ABS combination relay valve being configured with one-level anti-lock responding device 60-1 is as follows: at braking procedure In, the drop-out value of wheel speed is sent to ECU, ECU by the curve of wheel speed suppression ratio in the unit interval by the wheel speed sensors of ABS configuration Value compares with the Q-value of an inner setting, if this curve values is more than Q-value, shows that wheel speed declines abnormal, is i.e. considered as vehicle system Disorder of internal organs produces " locking " phenomenon, and now ECU output signal makes normally closed solenoid valve 6-3 open, the first work chamber 5-6 and the 4th work Make the air pressure in chamber 5-9 through valve prepass 6-1, the air pressure in the 3rd work chamber 5-8 after valve passage 6-4 respectively by letting out Pressure hole 6-2 is released, and the valve 1-5 in main switch assembly closes immediately or air inflow reduces, and then reduces overall braking action Amount, to release " locking " state.

Embodiment 3:

See Fig. 5, on upper cover 6, be provided with input air pressure configuration pressure regulation responding device 60-2.

Input air pressure configuration pressure regulation responding device 60-2 includes controlling air pressure air inlet 6-10, control pressure channel 6-9, joining Put valve 6-11, valve rod 6-12, configuration valve film 6-14, valve prepass 6-13, electromagnetic valve 6-16, upper valve after passage 6-15, under Passage 7-2 after valve；Wherein, control pressure channel 6-9 and valve prepass 6-13 and the first work chamber 5-6 to be connected；After lower valve Passage 7-2 is connected with the pressure maintaining valve upper chamber 7-3 of voltage stabilization and regulation device 70；Electromagnetic valve 6-16 is controlled by the ECU in ABS.ABS ECU control unit in, have additional two grades of anti-lock braking systems.Native system controls electromagnetic valve 6-16.Control air pressure air inlet 6- 10 external master cylinder.

On electromagnetic valve 6-16, it is further opened with the external air of relief hole 6-17, relief hole 6-17.

Under normality, electromagnetic valve 6-16 is closed.From master cylinder air pressure through control air pressure air inlet 6-10 Flow into, flow through the cavity between valve 6-11 and valve rod 6-12 and enter control pressure channel 6-9, enter the first work chamber 5-6 Work.After valve prepass 6-13 and upper valve, after passage 6-15, lower valve, passage 7-2 is not attached to lead to；After upper valve after passage 6-15, lower valve Passage 7-2 is connected with relief hole 6-17.When the signal that electromagnetic valve 6-16 receives ECU is opened, relief hole 6-17 closes simultaneously Closing, after now the air pressure of the first work chamber 5-6 just can inject valve, passage 6-15 is to configuration valve film 6-14 effect, under entrance After valve, voltage stabilization and regulation device 70 is acted on by passage 7-2.

The operation principle of input air pressure configuration pressure regulation responding device 60-2 is as follows: ECU can supervise after one-level anti-lock action Surveying the releasing situation of " locking ", when releasing " locking ", ABS automatically exits from, if after more than a time t, wheel speed low speed state is still Being so " locking " that ECU can export two grades of anti-lock control signals, this signal drives normally closed solenoid valve 6-16 to open and close simultaneously Closing relief hole 6-17, air pressure one tunnel in the first work chamber 5-6, the 4th work chamber 5-9 is logical after valve prepass 6-13, valve Road 6-15 acts on configuration valve film 6-14, and active force makes valve rod 6-12 move to right, and closes or reduces entering of air inlet valve 6-11 Tolerance, thus reduce the pressure in the first work chamber 5-6, the 4th work chamber 5-9；Meanwhile, the first work chamber Air pressure in 5-6, the 4th work chamber 5-9 passage 7-2 after valve prepass 6-13, valve acts on pressure maintaining valve upper chamber 7-3, makees Firmly changing voltage stabilizing value makes voltage stabilizing piston 7-4 move down, and the air pressure in vacuum chamber 5-10 is through voltage stabilizing lower channel 7-9, controlling valve 7-7, voltage stabilizing upper channel 7-6 simultaneously act on vacuum chamber 5-7.Reducing and vacuum chamber's pressure of above malleation chamber pressure Increase, make the valve 1-5 in switch assembly close immediately or air inflow reduces, reduce overall braking action amount, with further " locking " state of releasing.

Embodiment 4:

See Fig. 4 and Fig. 6, be respectively provided with EBD switch assembly 30 in switch assembly 10 left and right sides.

EBD switch assembly 30 includes lower house side cover 3, compression spring 3-3, diaphragm assembly 3-4, small valve-rod 3-5, EBD valve Passage 3-9 after door 3-6, output pore 3-7, valve prepass 3-10, relaying electromagnetic valve 3-8, valve；Relaying electromagnetic valve 3-8 is controlled by ECU in ABS.In the ECU control unit of ABS, have additional left and right distribution and control EBD system.Native system controls relaying electromagnetism Valve 3-8 and 3-11.

In the present embodiment, lower house side cover 3 and lower house are integrated setting；Small valve-rod 3-5 offers central through hole For pressure release.

Under normality, relaying electromagnetic valve 3-8 and 3-11 of the left and right sides is closed, the system after switch assembly 10 Baric flow of taking offence enters output pore 3-7 through the sidewall of EBD valve 3-6, flows to its arrester connected.

The operation principle of EBD switch assembly 30 is as follows: under normal circumstances, and pair of right and left EBD switch assembly is at compression bullet It is in normally open under the effect of spring 3-3, directly divides through output pore 3-7 from the braking pressure after switch assembly 10 during braking All arresters belonging to being fitted on.When vehicle is braked suddenly in the case of high-speed cruising, ECU is while monitoring " locking " The wheel speed of left and right distribution wheels is carried out mixing ratio relatively, if because some factor makes left and right wheels difference in wheel set more than inside ECU When determining standard value, system can export control signal, drives corresponding relative low speeds side normally closed relaying electromagnetic valve (to relay electromagnetism with right side As a example by valve 3-8) open, braking pressure passage 3-9 after valve prepass 3-10, valve acts on diaphragm assembly 3-4, small valve-rod 3-5 Move to right, make EBD valve 3-6 close immediately or air inflow reduces, and released partial gas pressure by small valve-rod 3-5 centre bore, thus Make this " low speed " side wheel group brake force reduce, to balance the braking moment of left and right wheels, reach brake force and frictional force (traction Power) coupling, it is ensured that the balance of vehicle and safety.

The optimal embodiment of this utility model is that, on relay valve, arrangement brake cuts responding device 60-immediately simultaneously 3, one-level antilock device 60-1, input air pressure configuration pressure regulation responding device 60-2, and EBD switch assembly 30；ABS's Setting up braking instant incision system, one-level anti-lock braking system, two grades of anti-lock braking systems in ECD control unit, left and right is distributed simultaneously Control EBD system etc..This kind of ABS combines relay valve, can realize several functions, reach optimal braking effect, adapt to very much city Field demand.

Claims (14)

1. a stepless voltage transformation device, including housing, the main valve stem being placed in housing hollow (5), is sleeved on main valve stem (5) top Upper diaphragm assembly (5-3), be sleeved on the lower diaphragm assembly (5-1) of main valve stem (5) bottom；Upper diaphragm assembly (5-3), main valve stem (5), housing hollow is divided into upper chamber, the second work chamber (5-being not attached to each other lead to by lower diaphragm assembly (5-1) from top to bottom 7), the 3rd work chamber (5-8), the 4th work chamber (5-9), the 5th work chamber (5-10)；It is characterized in that, at epicoele Indoor arrange a high pressure diaphragm (5-4) contacted with main valve stem (5), and upper chamber is separated into not phase by this high pressure diaphragm (5-4) The high-pressure chamber (5-5) of connection and the first work chamber (5-6)；In the first work chamber (5-6) and the 4th work chamber (5-9) Between be provided with communicating passage, master cylinder is led to outward in the first work chamber (5-6).

2. a relay valve, including switch assembly (10), voltage stabilization and regulation device (70)；It is characterized in that, also include claim 1 Described stepless voltage transformation device (50)；Wherein, the main valve stem (5) of stepless voltage transformation device (50) directly control switch assembly (10), voltage stabilization and regulation device (70) is connected between the second work chamber (5-7) and the 5th work chamber (5-10).

3. ABS combines a relay valve, including the relay valve described in claim 2；It is characterized in that, also include braking and immediately cut Enter responding device (60-3).

ABS the most according to claim 3 combines relay valve, it is characterised in that responding device is cut in described braking immediately (60-3) the valve prepass (6-5) being connected with high-pressure air source gas receiver is included, logical after the valve being connected with high-pressure chamber (5-5) Road (6-6), is connected on the normally closed instant electromagnetic valve (6-7) between passage (6-6) after valve prepass (6-5) and valve；Normally closed immediately The ECU that electromagnetic valve (6-7) is controlled by ABS, which control connecting or partition of valve prepass (6-5) and passage after valve (6-6).

5. ABS combines a relay valve, including the relay valve described in claim 2；It is characterized in that, also include one-level anti-lock Responding device (60-1).

ABS the most according to claim 5 combines relay valve, it is characterised in that described one-level anti-lock responding device (60- 1) the valve prepass (6-1) being connected with the first work chamber (5-6), the valve being connected with the 3rd work chamber (5-8) are included Rear passage (6-4), straight open to atmosphere relief hole (6-2)；Passage (6-4) after relief hole (6-2) with valve prepass (6-1), valve Between connect a normally closed solenoid valve (6-3), the ECU that electromagnetic valve (6-3) is controlled by ABS, control valve prepass (6-1), valve The connection of rear passage (6-4) and relief hole (6-2) or partition.

7. ABS combines a relay valve, including the relay valve described in claim 2；It is characterized in that, also include that input air pressure is joined Put pressure regulation responding device (60-2).

ABS the most according to claim 7 combines relay valve, it is characterised in that: described input air pressure configuration pressure regulation response dress Put (60-2) include control air pressure air inlet (6-10), control pressure channel (6-9), configuration valve (6-11), valve rod (6-12), Passage (7-after passage (6-15), lower valve after configuration valve film (6-14), valve prepass (6-13), electromagnetic valve (6-16), upper valve 2)；Wherein, control pressure channel (6-9) to be connected with the first work chamber (5-6) with valve prepass (6-13)；Passage after lower valve (7-2) it is connected with voltage stabilization and regulation device (70)；The ECU that electromagnetic valve (6-16) is controlled by ABS.

9. ABS combines a relay valve, including the relay valve described in claim 2；It is characterized in that, also include being arranged on switch The EBD switch assembly (30) of assembly (10) left and right sides.

ABS the most according to claim 9 combines relay valve, it is characterised in that: described EBD switch assembly includes lower house Side cover (3), compression spring (3-3), diaphragm assembly (3-4), small valve-rod (3-5), EBD valve (3-6), output pore (3-7), valve Passage (3-9) after prepass (3-10), relaying electromagnetic valve (3-8), valve；The ECU that relaying electromagnetic valve (3-8) is controlled by ABS.

11. 1 kinds of ABS combine relay valve, including the relay valve described in claim 2；It is characterized in that, also include that one-level is antilock Dead responding device (60-1) and input air pressure configuration pressure regulation responding device (60-2).

12. 1 kinds of ABS combine relay valve, including the relay valve described in claim 2；It is characterized in that, also include that one-level is antilock Dead responding device (60-1) and be arranged on the EBD switch assembly (30) of switch assembly (10) left and right sides.

13. 1 kinds of ABS combine relay valve, including the relay valve described in claim 2；It is characterized in that, also include input air pressure Configure pressure regulation responding device (60-2) and be arranged on the EBD switch assembly (30) of switch assembly (10) left and right sides.

14. 1 kinds of ABS combine relay valve, including the relay valve described in claim 2；It is characterized in that, also include that one-level is antilock Dead responding device (60-1) and input air pressure configuration pressure regulation responding device (60-2), and it is arranged on switch assembly (10) left and right two The EBD switch assembly (30) of side.