CN107867275B - Explosion-proof brake valve, explosion-proof braking valve group, braking system and vehicle - Google Patents
Explosion-proof brake valve, explosion-proof braking valve group, braking system and vehicle Download PDFInfo
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- CN107867275B CN107867275B CN201610850550.1A CN201610850550A CN107867275B CN 107867275 B CN107867275 B CN 107867275B CN 201610850550 A CN201610850550 A CN 201610850550A CN 107867275 B CN107867275 B CN 107867275B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/147—In combination with distributor valve
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of explosion-proof brake valve of braking system for vehicle, explosion-proof braking valve group, braking system and vehicles.Explosion-proof brake valve includes valve body and spool, valve body is equipped with the first hydraulic fluid port and the second hydraulic fluid port, first hydraulic fluid port is suitable for being connected to brake switch, second hydraulic fluid port is suitable for being connected to brake pipe, for being connected to the oily channel of the first hydraulic fluid port and the second hydraulic fluid port there are two being set in valve body, two oily channels are oil inlet passage and drainback passage, and drainback passage is equipped with the control valve for only allowing oil liquid to flow to the first hydraulic fluid port from the second hydraulic fluid port；In the valve chamber that spool is movably arranged at valve body between application position and explosion-proof position, wherein explosion-proof brake valve, which is configured to spool when the vehicle is braked, is moved to that application position opens oil inlet passage, spool is moved to explosion-proof position to block oil inlet passage in vehicle braking and when brake pipe bursts.The explosion-proof brake valve of braking system according to the present invention for vehicle, braking reliability is high, and structure is simple, at low cost, small in size.
Description
Technical field
The present invention relates to technical field of vehicle manufacture, more particularly, to a kind of explosion-proof braking of braking system for vehicle
The explosion-proof braking valve group of the braking system for vehicle of valve, explosion-proof brake valve with the braking system for vehicle,
Explosion-proof brake valve with the braking system for vehicle is used for vehicle for the braking system of vehicle and with described
Braking system vehicle.
Background technique
The Dual-path brake system of engineering truck is usually using single-acting brake valve (master cylinder) or dual service brake valve (system
Dynamic master cylinder) it is braked to realize.However, when Dual-path brake system uses single-acting brake valve (master cylinder), if vehicle
Any one explosion in the brake pipe of this 4 wheels of front wheels and rear wheels, vehicle will all lose braking；And if using double cropping
With brake valve (master cylinder), then relative to single-acting brake valve higher cost, and volume is larger.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of use
There is braking reliability in the explosion-proof brake valve of the explosion-proof brake valve of the braking system of vehicle, the braking system for vehicle
High, the advantages that structure is simple, at low cost, small in size.
The present invention also proposes a kind of system for vehicle of explosion-proof brake valve with the braking system for vehicle
The explosion-proof braking valve group of dynamic system.
The present invention also proposes a kind of system for vehicle of explosion-proof brake valve with the braking system for vehicle
Dynamic system.
The present invention also proposes a kind of vehicle with the braking system for vehicle.
The explosion-proof brake valve of the braking system for vehicle of embodiment according to a first aspect of the present invention, the braking system
Including brake switch, brake and the brake pipe for being connected to the brake switch and the brake, the explosion-proof braking
Valve includes: valve body, and the valve body is equipped with the first hydraulic fluid port and the second hydraulic fluid port, and first hydraulic fluid port is suitable for connecting with the brake switch
Logical, second hydraulic fluid port is suitable for be connected to the brake pipe, sets that there are two be used to be connected to first hydraulic fluid port in the valve body
With the oily channel of second hydraulic fluid port, described two oil channels are oil inlet passage and drainback passage, and the drainback passage is equipped with
Oil liquid is only allowed to flow to the control valve of first hydraulic fluid port from second hydraulic fluid port；Spool, the spool is in application position and prevents
It is movably arranged between quick-fried position in the valve chamber of the valve body to open or block the oil inlet passage, wherein the explosion-proof system
Dynamic valve be configured to the spool in the vehicle braking be moved to the application position oil inlet passage is opened, In
The spool is moved to the explosion-proof position to block the oil inlet passage when vehicle braking and brake pipe explosion.
The explosion-proof brake valve of braking system according to an embodiment of the present invention for vehicle, can make valve when the vehicle is braked
Core is moved to application position to open oil inlet passage, so that spool is moved to explosion-proof position in vehicle braking and brake pipe explosion
To block oil inlet passage, so as to realize the reliable braking of vehicle, and structure is simple, at low cost, small in size.
In addition, the explosion-proof brake valve of the braking system according to an embodiment of the present invention for vehicle also have it is following additional
Technical characteristic:
According to some embodiments of the present invention, on the moving direction of the spool, the valve chamber and the spool cooperate
To limit working chamber spaced apart, the first control chamber and the second control chamber, the working chamber is connected to the oil inlet passage, institute
State that the first control chamber is connected to second hydraulic fluid port and second control chamber is connected to first hydraulic fluid port, the spool includes
The active section that is located in the working chamber, the first control section being located in first control chamber and it is located at second control chamber
The second interior control section, when vehicle braking, the spool from initial position was moved to the application position, described initial
Spool part described in position blocks the oil inlet passage, and the spool described in the application position fully opens the oil inlet passage,
The spool is configured under the oily differential pressure action between first control chamber and second control chamber towards the system
Dynamic position is mobile towards the explosion-proof position.
Further, the periphery wall of the active section is equipped with cricoid work nest, in the initial position, the work
A part of slot is located in the oil inlet passage, and in the application position, the work nest is entirely located in the oil inlet passage.
Advantageously, the width of the work nest is less than the width of the oil inlet passage.
In some embodiments of the invention, the first control channel and the second control channel are equipped in the valve body, it is described
The both ends of first control channel are connected to second hydraulic fluid port and first control chamber respectively, and the two of second control channel
End is connected to first hydraulic fluid port and second control chamber respectively.
In some embodiments of the invention, the internal perisporium of first control section and first control chamber cooperates
First control chamber is separated into two not connected sub-chamber, far from second control chamber sub-chamber with it is described
The connection of second hydraulic fluid port, another described sub-chamber are suitable for being connected to external environment.
Optionally, sealing element is equipped between first control section and the internal perisporium of first control chamber to be separated out institute
Shu Liangge sub-chamber.
According to some embodiments of the present invention, the control valve is check valve.
According to some embodiments of the present invention, the first resetting apparatus is equipped in the valve body, described in the explosion-proof position
First resetting apparatus often pushes the spool to the application position.
Further, first resetting apparatus includes the first screw plug and first back-moving spring, the first screw plug installation
On the valve body and the both ends of the first back-moving spring are only against on first screw plug and the spool.
According to some embodiments of the present invention, it is additionally provided with the second resetting apparatus in the valve body, in the application position institute
It states the second resetting apparatus and often pushes the spool to the explosion-proof position.
Further, second resetting apparatus includes the second screw plug and second back-moving spring, the second screw plug installation
On the valve body and the both ends of the second back-moving spring are only against on second screw plug and the spool.
The explosion-proof braking valve group of the braking system for vehicle of embodiment according to a second aspect of the present invention, including according to this
Explosion-proof brake valve described in invention first aspect embodiment for the braking system of vehicle, the explosion-proof brake valve are two,
Two explosion-proof brake valves are configured to integral piece, and first hydraulic fluid port of two explosion-proof brake valves shares and the system
The connected oily channel of dynamic switch.
The explosion-proof braking valve group of braking system according to an embodiment of the present invention for vehicle, utilizes two integrated
A explosion-proof brake valve, braking reliability is high, structure is simple, at low cost, small in size.
The braking system for vehicle of embodiment according to a third aspect of the present invention, comprising: brake switch and brake, institute
It states and is connected between brake switch and the brake by brake pipe；It is used for described in embodiment according to a first aspect of the present invention
The explosion-proof brake valve of the braking system of vehicle, first hydraulic fluid port be connected to the brake switch and second hydraulic fluid port with it is described
Brake pipe connection.
Braking system according to an embodiment of the present invention for vehicle utilizes the braking system as described above for being used for vehicle
Explosion-proof brake valve, braking reliability is high, structure is simple, at low cost, small in size.
According to some embodiments of the present invention, the braking system be Dual-path brake system, the brake be four and
The explosion-proof brake valve is two, and the first hydraulic fluid port of two explosion-proof brake valves is connected to the brake switch and second respectively
Hydraulic fluid port is connected to the brake pipe for connecting four brakes respectively.
The vehicle of embodiment according to a fourth aspect of the present invention, including being used for described in embodiment according to a third aspect of the present invention
The braking system of vehicle.
Vehicle according to an embodiment of the present invention, using the as described above braking system for being used for vehicle, braking reliability is high,
Structure is simple, at low cost, small in size.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the braking system according to an embodiment of the present invention for vehicle；
Fig. 2 is the structural schematic diagram of the explosion-proof brake valve of the braking system according to an embodiment of the present invention for vehicle；
Fig. 3 is structure of the explosion-proof brake valve in initial position of the braking system according to an embodiment of the present invention for vehicle
Schematic diagram；
Fig. 4 is structure of the explosion-proof brake valve in application position of the braking system according to an embodiment of the present invention for vehicle
Schematic diagram；
Fig. 5 is structure of the explosion-proof brake valve in explosion-proof position of the braking system according to an embodiment of the present invention for vehicle
Schematic diagram；
Fig. 6 is the schematic illustration of the explosion-proof brake valve of the braking system according to an embodiment of the present invention for vehicle.
Appended drawing reference:
For the braking system 1 of vehicle,
Brake switch 1000, brake 2000, brake pipe 3000,
The explosion-proof brake valve 4000 of braking system for vehicle,
Valve body 4100, the first hydraulic fluid port 4110, the second hydraulic fluid port 4120, oil inlet passage 4130, drainback passage 4140, control valve
4141, valve chamber 4150, working chamber 4151, the first control chamber 4152, the second control chamber 4153, sealing element 4154, the first control is logical
Road 4160, the second control channel 4170,
Spool 4200, active section 4210, work nest 4211, the first control section 4220, the second control section 4230,
First resetting apparatus 4300, the first screw plug 4310, first back-moving spring 4320,
Second resetting apparatus 4400, the second screw plug 4410, second back-moving spring 4420,
Fuel tank 5000.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates indicated technical characteristic
Quantity." first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more spy
Sign.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
The application makes the discovery of following facts and problem and understanding based on inventor:
The Dual-path brake system of engineering truck is usually using single-acting brake valve (master cylinder) or dual service brake valve (system
Dynamic master cylinder) it is braked to realize.Here, Dual-path brake refers to that the front wheels and rear wheels of vehicle can brake simultaneously, Dual-path brake system
The middle brake pipe being connected respectively with 4 brakes can be intersected with each other, be also possible to be parallel to each other.
However, being to establish pressure by oil liquid is braked into closed seal chamber due to braking in fact, to make to brake
Device work, in this way, when Dual-path brake system is using single-acting brake valve (master cylinder), if the front wheels and rear wheels of vehicle this
Any one explosion in the brake pipe of 4 wheels, above-mentioned seal chamber cannot seal, and braking oil liquid can be missed, therefore close
Envelope chamber can not establish pressure, cannot also make brake operation, vehicle will all lose braking.Wherein, it is connected respectively with 4 wheels
4 brakes above-mentioned seal chamber is constituted by brake pipe parallel connection.And if using dual service brake valve (master cylinder), that
Relative to single-acting brake valve higher cost, and volume is larger.
For this purpose, the present invention proposes a kind of explosion-proof brake valve 4000 of braking system for vehicle, this is used for the system of vehicle
The explosion-proof brake valve 4000 of dynamic system is particularly suitable for Dual-path brake system, has that braking reliability is high, structure is simple, cost
The advantages that low, small in size.
Below with reference to the explosion-proof of Fig. 1-Fig. 6 description braking system for vehicle of embodiment according to a first aspect of the present invention
Brake valve 4000.Braking system includes brake switch, brake and the brake pipe for being connected to brake switch and brake.Its
In, brake switch can be single-acting brake valve.
As shown in figs 1 to 6, the explosion-proof brake valve 4000 of the braking system according to an embodiment of the present invention for vehicle, packet
Include valve body 4100 and spool 4200.
Specifically, valve body 4100 be equipped with the first hydraulic fluid port 4110 and the second hydraulic fluid port 4120, the first hydraulic fluid port 4110 be suitable for
Brake switch is connected to, and the second hydraulic fluid port 4120 is suitable for being connected to brake pipe, is set in valve body 4100 oily there are two being used to be connected to first
The oily channel of mouth 4110 and the second hydraulic fluid port 4120, two oily channels are oil inlet passage 4130 and drainback passage 4140, drainback passage
4140 are equipped with the control valve 4141 for only allowing oil liquid to flow to the first hydraulic fluid port 4110 from the second hydraulic fluid port 4120.Spool 4200 is being braked
It is movably arranged between position and explosion-proof position in the valve chamber 4150 of valve body 4100 to open or block oil inlet passage 4130,
In explosion-proof brake valve 4000 be configured to spool 4200 when the vehicle is braked and be moved to application position oil inlet passage 4130 is beaten
It opens, in vehicle braking and brake pipe explosion, spool 4200 is moved to explosion-proof position to block oil inlet passage 4130.
For example, when Dual-path brake system normal brake application, brake switch is opened, and braking oil liquid feeds to 4 brakes respectively, 4
Oil circuit is interconnected where a brake, can establish pressure simultaneously, realize the front wheels and rear wheels of vehicle while braking；Work as braking
When having brake pipe explosion in the process, for example, when the brake pipe being connected with the brake of front-wheel bursts, the brake institute of front-wheel
It is released in the brake pipe that the pressure of oil circuit will pass through explosion, at the same time, explosion-proof brake valve 4000 will open into the system of front-wheel
The oil circuit of dynamic device is closed, and makes to brake the brake place oil circuit that oil liquid only leads to rear-wheel, in this way, oil circuit where the brake of rear-wheel
It still can establish pressure, without components such as other switches or sensors, can realize the reliable braking of vehicle.It releases
When brake, the oil liquid of brake flows to the first hydraulic fluid port 4110 from the second hydraulic fluid port 4120 by drainback passage 4140.
As shown in fig. 6, there are three working condition, (i.e. explosion-proof brake valve 4000 is respectively at a left side to the explosion-proof tool of brake valve 4000
Position, middle position and right position), P is for indicating that the oil circuit from brake switch, A are used to indicate to lead to the brake oil of the brake of front-wheel
Pipe, B are used to indicate to lead to the brake pipe of the brake of rear-wheel.When there is no brake pipe burst conditions, explosion-proof braking
Valve 4000 is (position in i.e.) in an intermediate position, and oil liquid can have respectively entered two oil circuits of A, B；When the road A, brake pipe bursts
When, explosion-proof brake valve 4000 is in location right (i.e. right position), and the road A is shut, and oil liquid can only enter the road B；When the road B brake pipe
When bursting, explosion-proof brake valve 4000 is in left position (i.e. left position), and the road B is shut, and oil liquid can only enter the road A.
Further, since can realize that double acting in the prior art is braked using single-acting brake valve and the explosion-proof brake valve
The function of valve, and the structure that two explosion-proof brake valves 4000 can be become one, compared to dual service brake valve, structure is big
For simplification, cost is relatively low, and occupies small volume.
In conclusion the explosion-proof brake valve 4000 of the braking system according to an embodiment of the present invention for vehicle, especially suitable
For Dual-path brake system, spool 4200 can be made to be moved to application position to open oil inlet passage 4130 when the vehicle is braked,
It realizes the braking of vehicle, also, in vehicle braking and the explosion of any brake pipe, spool 4200 can be made to be moved to explosion-proof position
It sets to block oil inlet passage 4130, in this way, the oil circuit where remaining brake pipe still can establish pressure, so as to automatic
Oil circuit where judging and closing the brake pipe of explosion, realizes the reliable braking of vehicle.Meanwhile structure is simple, at low cost, volume
It is small.
According to some embodiments of the present invention, as Figure 2-Figure 5, it (is shown in figure in the moving direction of spool 4200
Left and right directions) on, valve chamber 4150 and spool 4200 cooperate to limit the working chamber being spaced apart 4151, the first control chamber 4152
With the second control chamber 4153.Working chamber 4151 is connected to oil inlet passage 4130, and the first control chamber 4152 and the second hydraulic fluid port 4120 connect
Logical, the second control chamber 4153 is connected to the first hydraulic fluid port 4110.Spool 4200 include be located in working chamber 4151 active section 4210,
First be located in the first control chamber 4152 control section 4220 and the second control section 4230 for being located in the second control chamber 4153.Vehicle
Braking when, spool 4200 is moved to application position shown in Fig. 4 from initial position shown in Fig. 3, in initial position spool
4200 parts block oil inlet passage 4130, fully open oil inlet passage 4130 in application position spool 4200, spool 4200 is by structure
It causes under the oily differential pressure action between the first control chamber 4152 and the second control chamber 4153 towards application position or towards Fig. 5
Shown in explosion-proof position it is mobile.
For example, the diameter of active section 4210 and the diameter of the second control section 4230 are respectively less than the first control section 4220
Diameter, and the diameter of active section 4210 is greater than the diameter of the second control section 4230, in this way, it is mobile to obtain 4141 core of control valve
Different oil pressure it is poor.Specifically, in initial position, oil liquid respectively enters oil inlet passage 4130 and second from the first hydraulic fluid port 4110
Control chamber 4153, since the valve port at this time between active section 4210 and oil inlet passage 4130 is smaller, a small amount of oil liquid can lead to
It crosses the second hydraulic fluid port 4120 and flow to brake, while the oil liquid at the second hydraulic fluid port 4120 can be flowed into the first control chamber 4152, second
Pressure in the pressure of hydraulic fluid port 4120 and the first control chamber 4152 slowly increases.
Since the forced area of the first control section 4220 in the first control chamber 4152 is greater than in the second control chamber 4153
The forced area of second control section 4230, in this way, the oil liquid in the first control chamber 4152 is made after the second hydraulic fluid port 4120 establishes pressure
The oil liquid that power on spool 4200 is greater than in the second control chamber 4153 acts on the power on spool 4200, and spool 4200 is at this
It moves right under kind of oily differential pressure action to application position, the valve port of spool 4200 fully opens at this time, and the oil liquid of big flow can be with
The second hydraulic fluid port 4120 is flowed to from the first hydraulic fluid port 4110 by oil inlet passage 4130 and is braked into brake.
When there is brake pipe to burst, the pressure of the second hydraulic fluid port 4120 moment will be reduced to zero, due to the second oil
Mouth 4120 is connected to the first control chamber 4152, therefore the pressure reduction in the first control chamber 4152, such first control chamber 4152
Interior oil liquid just goes that the second control chamber 4153 is overcome to act on the power on spool 4200 without enough power, and spool 4200 is this
Be moved to the left initial position under oily differential pressure action, this when the first hydraulic fluid port 4110 pressure and the second control chamber 4153 pressure
Power starts to increase, until the second control chamber 4153 generate power make spool 4200 continue to be moved to the left explosion-proof position, make valve port
It completely closes, to block oil circuit where the brake pipe of explosion.
Further, as Figure 2-Figure 5, cricoid work nest 4211 can be equipped on the periphery wall of active section 4210,
It is located in oil inlet passage 4130 in a part of initial position, work nest 4211, in application position, work nest 4211 is entirely located in
In oil inlet passage 4130.In this way, 4130 part of oil inlet passage is opened in initial position, only a small amount of oil liquid can be from first
Hydraulic fluid port 4110 flows to the second hydraulic fluid port 4120, and in application position, oil inlet passage 4130 is opened completely, and big flow oil liquid is oily from first
Mouth 4110 flows to the second hydraulic fluid port 4120.Advantageously, as Figure 2-Figure 5, the width of work nest 4211 is less than oil inlet passage 4130
Width, to guarantee to be opened completely in application position oil inlet passage 4130.
In some embodiments of the invention, as Figure 2-Figure 5, the first control channel can be equipped in valve body 4100
4160 and second control channel 4170, the both ends of the first control channel 4160 respectively with the second hydraulic fluid port 4120 and the first control chamber
4152 connections, the both ends of the second control channel 4170 are connected to the first hydraulic fluid port 4110 and the second control chamber 4153 respectively, to limit
Define the circulation passage of oil liquid.
In some embodiments of the invention, as Figure 2-Figure 5, the first control section 4220 and the first control chamber
4152 internal perisporium cooperates so that the first control chamber 4152 is separated into two not connected sub-chamber, far from the second control chamber
4153 sub-chamber is connected to the second hydraulic fluid port 4120, another sub-chamber is suitable for being connected to external environment, in this way, guaranteeing described another
One sub-chamber does not have back pressure, so that movement of first control section 4220 in the first control chamber 4152 is more flexible fast
Speed improves response speed.For example, one positioned at left side in Liang Ge sub-chamber is connected to the second hydraulic fluid port 4120, it is located at right side
Sub-chamber be connected to fuel tank 5000.
Optionally, as Figure 2-Figure 5, it can be set between the first control section 4220 and the internal perisporium of the first control chamber 4152
There is sealing element 4154, be separated out Liang Ge sub-chamber with, prevents the oil liquid of the sub-chamber far from the second control chamber 4153 from entering another
A sub-chamber.
According to some embodiments of the present invention, as Figure 2-Figure 5, control valve 4141 can be check valve, such oil liquid
Closed check valve when flowing to the second hydraulic fluid port 4120 from the first hydraulic fluid port 4110, oil liquid cannot pass through from drainback passage 4140, and oil liquid is only
The first hydraulic fluid port 4110 can be flowed to from the second hydraulic fluid port 4120, so that structure is simple, it is easy to control.Preferably, check valve is open type
Check valve releases return oil pressure when brake to reduce, and improves response speed when releasing brake.
In Fig. 2-embodiment shown in fig. 5, the first resetting apparatus 4300 can be equipped in valve body 4100, in explosion-proof position
First resetting apparatus 4300 often pushes spool 4200 to application position, to realize the Rapid reset of spool 4200.Specifically,
One resetting apparatus 4300 may include the first screw plug 4310 and first back-moving spring 4320, and the first screw plug 4310 is mounted on valve body
On 4100, and the both ends of first back-moving spring 4320 are only against on the first screw plug 4310 and spool 4200, in this way, by adjusting the
One screw plug 4310 can control the cracking pressure of explosion-proof brake valve 4000, for example, it is multiple to compress first to tighten the first screw plug 4310
Position spring 4320, can increase the cracking pressure of spool 4200.
According to some embodiments of the present invention, as Figure 2-Figure 5, the second resetting apparatus is also provided in valve body 4100
4400, often push spool 4200 to explosion-proof position in the second resetting apparatus of application position 4400, to realize the fast of spool 4200
Reply immediately position.Specifically, the second resetting apparatus 4400 may include the second screw plug 4410 and second back-moving spring 4420, the second screw plug
4410 are mounted on valve body 4100, and the both ends of second back-moving spring 4420 are only against on the second screw plug 4410 and spool 4200,
In this way, the cracking pressure of explosion-proof brake valve 4000 can be controlled by adjusting the second screw plug 4410, for example, tightening the second screw plug
4410 compress second back-moving spring 4420, can increase the cracking pressure of spool 4200.
Below with reference to the accompanying drawings the braking system for vehicle of a specific embodiment according to the present invention is described in detail
Explosion-proof brake valve 4000 is worth understanding, only exemplary illustration described below, and should not be understood as to limit of the invention
System.
As shown in figs 1 to 6, the explosion-proof brake valve 4000 of the braking system according to an embodiment of the present invention for vehicle, packet
Include valve body 4100, spool 4200, the first resetting apparatus 4300 and the second resetting apparatus 4400.
Specifically, limit the valve chamber 4150 that central axis orients in left-right direction in valve body 4100, valve chamber 4150 with
Spool 4200 cooperates to limit working chamber 4151 spaced apart, the first control chamber 4152 and the second control chamber 4153.Valve body
4100 are equipped with the first hydraulic fluid port 4110 and the second hydraulic fluid port 4120, be equipped in valve body 4100 oil inlet passage 4130, drainback passage 4140,
First control channel 4160 and the second control channel 4170.First hydraulic fluid port 4110 is connected to brake switch, and the first hydraulic fluid port
4110 are connected to by the second control channel 4170 with the second control chamber 4153, and the second hydraulic fluid port 4120 is connected to brake pipe, and the
Two hydraulic fluid ports 4120 are connected to by the first control channel 4160 with the first control chamber 4152.Wherein, the first hydraulic fluid port 4110 and the second oil
Mouth 4120 is connected to by oil inlet passage 4130, and working chamber 4151 is connected to oil inlet passage 4130, and drainback passage 4140 is equipped with only
Oil liquid is allowed to flow to the control valve 4141 of the first hydraulic fluid port 4110 from the second hydraulic fluid port 4120, control valve 4141 is open type check valve.
Spool 4200 includes the active section 4210 being located in working chamber 4151 being from left to right arranged successively, is located at the first control
First in chamber 4152 processed control section 4220 and the second control section 4230 for being located in the second control chamber 4153.Active section 4210
Diameter and the diameter of the second control section 4230 are respectively less than the diameter of the first control section 4220, and the diameter of active section 4210 is greater than the
The diameter of two control sections 4230.The periphery wall of active section 4210 is equipped with cricoid work nest 4211, the width of work nest 4211
Less than the width of oil inlet passage 4130.Sealing element is equipped between first control section 4220 and the internal perisporium of the first control chamber 4152
4154, the first control chamber 4152 is separated into two not connected sub-chamber, sub-chamber and the second hydraulic fluid port positioned at left side
4120 connections, the sub-chamber positioned at right side are connected to fuel tank 5000.
First resetting apparatus 4300 includes the first screw plug 4310 and first back-moving spring 4320, and the first screw plug 4310 is mounted on
In working chamber 4151, and the left side for being against the first screw plug 4310 and active section 4210 is stopped at the both ends of first back-moving spring 4320
On, the part between active section 4210 and the first screw plug 4310 of working chamber 4151 is connected to fuel tank 5000.Second resets
Device 4400 includes the second screw plug 4410 and second back-moving spring 4420, and the second screw plug 4410 is mounted on the second control chamber 4153
It is interior, and the both ends of second back-moving spring 4420 are only against on the right side of the second screw plug 4410 and the second control section 4230.
In initial position, oil liquid respectively enters oil inlet passage 4130 from the first hydraulic fluid port 4110 and passes through the second control channel
4170 enter the second control chambers 4153, since a part of work nest 4211 is located in oil inlet passage 4130, active section 4210 and
Valve port between oil inlet passage 4130 is smaller, and therefore, a small amount of oil liquid can flow to brake by the second hydraulic fluid port 4120, together
When the second hydraulic fluid port 4120 at oil liquid the first control chamber 4152, the second hydraulic fluid port 4120 can be flowed by the first control channel 4160
Pressure and the first control chamber 4152 in pressure slowly increase.
Since the forced area of the first control section 4220 is greater than the forced area of the second control section 4230, in this way, the second oil
After mouth 4120 establishes pressure, the oil liquid in the first control chamber 4152 acts on the power on spool 4200 greater than the second control chamber 4153
Interior oil liquid and 4420 collective effect of second back-moving spring pushes spool 4200 to move right to braking in the power on spool 4200
Position, at this point, work nest 4211 is entirely located in oil inlet passage 4130, the valve port of spool 4200 is fully opened, the oil of big flow
Liquid can flow to the second hydraulic fluid port 4120 from the first hydraulic fluid port 4110 by oil inlet passage 4130 and brake into brake.
When there is brake pipe to burst, the pressure of the second hydraulic fluid port 4120 will be reduced to zero moment, such first control
Oil liquid in chamber 4152 processed just goes to overcome 4420 collective effect of the second control chamber 4153 and second back-moving spring without enough power
Power on spool 4200, spool 4200 are moved to the left initial position, this when the first hydraulic fluid port 4110 pressure and second
The pressure of control chamber 4153 starts to increase, until the power that the second control chamber 4153 generates can overcome first back-moving spring 4320 to make
With the power on spool 4200, spool 4200 is made to continue to be moved to the left explosion-proof position, valve port completely closes, to block explosion
Brake pipe where oil circuit.
When the explosion-proof brake valve 4000 is applied to Dual-path brake system as a result, there is not shadow after brake pipe explosion all the way
Ring the stopping power of other oil circuits, that is, when the road A brake pipe (brake pipe being connected to two brakes of front-wheel) generation is quick-fried
When splitting, the road A is shut, and oil liquid can only enter the road B brake pipe (brake pipe being connected to two brakes of rear-wheel)；Work as B
When road brake pipe bursts, the road B is shut, and oil liquid can only enter the road A brake pipe.In this way, using single-acting brake valve
The function of dual service brake valve can be realized with the explosion-proof brake valve 4000, to simplify structure, save cost, reduce body
Product.
In conclusion the explosion-proof brake valve 4000, Ke Yishi of the braking system according to an embodiment of the present invention for vehicle
Now reliable braking, and structure is simple, at low cost, small in size.
As shown in figs 1 to 6, the explosion-proof braking of the braking system for vehicle of embodiment according to a second aspect of the present invention
Valve group, the explosion-proof brake valve 4000 of the braking system including being used for vehicle described in embodiment according to a first aspect of the present invention.
Specifically, explosion-proof brake valve 4000 is two, two explosion-proof brake valves 4000 are configured to integral piece, and two anti-
First hydraulic fluid port 4110 of quick-fried brake valve 4000 shares the oily channel being connected with brake switch.For example, the explosion-proof braking valve group application
In Dual-path brake system, two explosion-proof brake valves 4000 share valve body 4100, the second hydraulic fluid port of two explosion-proof brake valves 4000
4120 are connected to the brake pipe for connecting four brakes respectively, in this way, realizing Dual-path brake, and braking that ought wherein all the way
After oil pipe burst, the stopping power of another oil circuit is not influenced.
In one embodiment, the brake 2000 of the front-wheel of vehicle connects brake pipe 3000, explosion-proof braking valve group
One explosion-proof brake valve 4000 is connected to brake pipe 3000, and the brake 2000 of the rear-wheel of vehicle connects a brake pipe
3000, another explosion-proof brake valve 4000 of explosion-proof braking valve group is connected to brake pipe 3000.For example, working as the brake of front-wheel
When the brake pipe 3000 of 2000 connections bursts, the brake 2000 of front-wheel fails, and passes through corresponding explosion-proof brake valve
4000 close the oil circuit of the brake pipe 3000, and the brake 2000 of rear-wheel still can work normally at this time.
The explosion-proof braking valve group of braking system according to an embodiment of the present invention for vehicle, utilizes two integrated
A explosion-proof brake valve 4000, braking reliability is high, and structure is simple, at low cost, small in size.
As shown in figs 1 to 6, the braking system 1 for vehicle of embodiment, including braking according to a third aspect of the present invention
Switch 1000, brake 2000 and according to a first aspect of the present invention described in embodiment for vehicle braking system explosion-proof system
Dynamic valve 4000.
Specifically, being connected between brake switch 1000 and brake 2000 by brake pipe 3000.First hydraulic fluid port
4110 are connected to brake switch 1000, and the second hydraulic fluid port 4120 is connected to brake pipe 3000.
Braking system 1 according to an embodiment of the present invention for vehicle utilizes the braking system as described above for being used for vehicle
The explosion-proof brake valve 4000 of system, braking reliability is high, structure is simple, at low cost, small in size.
According to some embodiments of the present invention, as depicted in figs. 1 and 2, braking system 1 is Dual-path brake system, brake
2000 is four and are connected with front wheels and rear wheels respectively, and explosion-proof brake valve 4000 is two, and the of two explosion-proof brake valves 4000
One hydraulic fluid port 4110 is connected to brake switch 1000 respectively, and the second hydraulic fluid port 4120 of two explosion-proof brake valves 4000 respectively with connection
The brake pipe 3000 of four brakes 2000 is connected to, in this way, realizing Dual-path brake, and brake pipe that ought wherein all the way
After 3000 explosions, the stopping power of another oil circuit is not influenced.Preferably, two explosion-proof brake valves 4000 are an integral structure, from
And it is further simplified structure, further decrease volume.
Other of braking system 1 according to an embodiment of the present invention for vehicle are constituted and are operated common for this field
All be for technical staff it is known, be not detailed herein.
The vehicle of embodiment according to a fourth aspect of the present invention, including being used for described in embodiment according to a third aspect of the present invention
The braking system 1 of vehicle.
Vehicle according to an embodiment of the present invention utilizes the braking system 1 as described above for being used for vehicle, braking reliability
Height, structure are simple, at low cost, small in size.
Other of vehicle according to an embodiment of the present invention are constituted and are operated for those of ordinary skills all
Be it is known, be not detailed herein.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " specific embodiment ", " show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are different
Surely identical embodiment or example is referred to.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in one or more embodiment or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (15)
1. a kind of explosion-proof brake valve of the braking system for vehicle, the braking system include brake switch, brake and use
In the brake pipe for being connected to the brake switch and the brake, which is characterized in that the explosion-proof brake valve includes:
Valve body, the valve body are equipped with the first hydraulic fluid port and the second hydraulic fluid port, and first hydraulic fluid port is suitable for being connected to the brake switch,
Second hydraulic fluid port be suitable for be connected to the brake pipe, set in the valve body there are two be used for be connected to first hydraulic fluid port and institute
The oily channel of the second hydraulic fluid port is stated, described two oil channels are oil inlet passage and drainback passage, and the drainback passage, which is equipped with, only to be permitted
Perhaps oil liquid flows to the control valve of first hydraulic fluid port from second hydraulic fluid port；
Spool, the spool be movably arranged between application position and explosion-proof position in the valve chamber of the valve body with open or
Block the oil inlet passage, wherein the explosion-proof brake valve be configured to the spool in the vehicle braking be moved to it is described
Application position opens the oil inlet passage, in the vehicle braking and brake pipe explosion, the spool is moved to
The explosion-proof position to block the oil inlet passage,
On the moving direction of the spool, the valve chamber cooperates with the spool to limit the working chamber being spaced apart, first
Control chamber and the second control chamber, the working chamber are connected to the oil inlet passage, first control chamber and second hydraulic fluid port
It is connected to and second control chamber is connected to first hydraulic fluid port,
The spool includes the active section being located in the working chamber, the first control section being located in first control chamber and sets
The second control section in second control chamber, when vehicle braking, the spool from initial position was moved to the braking
Position, the spool part described in the initial position block the oil inlet passage, and the spool described in the application position is beaten completely
The oil inlet passage is opened, the spool is configured to the work of the oil pressure difference between first control chamber and second control chamber
With lower mobile towards the application position or towards the explosion-proof position.
2. the explosion-proof brake valve of the braking system according to claim 1 for vehicle, which is characterized in that the active section
Periphery wall be equipped with cricoid work nest, be located at the oil inlet passage in a part of the initial position, the work nest
Interior, in the application position, the work nest is entirely located in the oil inlet passage.
3. the explosion-proof brake valve of the braking system according to claim 2 for vehicle, which is characterized in that the work nest
Width be less than the oil inlet passage width.
4. the explosion-proof brake valve of the braking system according to claim 1 for vehicle, which is characterized in that in the valve body
Equipped with the first control channel and the second control channel, the both ends of first control channel respectively with second hydraulic fluid port and described
The connection of first control chamber, the both ends of second control channel are connected to first hydraulic fluid port and second control chamber respectively.
5. the explosion-proof brake valve of the braking system according to claim 1 for vehicle, which is characterized in that first control
The internal perisporium of section processed and first control chamber cooperates so that first control chamber is separated into two not connected sub-chamber,
Sub-chamber far from second control chamber is connected to second hydraulic fluid port, another described sub-chamber is suitable for connecting with external environment
It is logical.
6. the explosion-proof brake valve of the braking system according to claim 5 for vehicle, which is characterized in that first control
Sealing element is equipped between section processed and the internal perisporium of first control chamber to be separated out described two sub-chamber.
7. the explosion-proof brake valve of the braking system according to claim 1 for vehicle, which is characterized in that the control valve
For check valve.
8. the explosion-proof brake valve described in any one of -7 for the braking system of vehicle according to claim 1, which is characterized in that
The first resetting apparatus is equipped in the valve body, the first resetting apparatus described in the explosion-proof position often pushes the spool to described
Application position.
9. the explosion-proof brake valve of the braking system according to claim 8 for vehicle, which is characterized in that described first is multiple
Position device includes the first screw plug and first back-moving spring, and first screw plug is mounted on the valve body and described first resets bullet
The both ends of spring are only against on first screw plug and the spool.
10. the explosion-proof brake valve described in any one of -7 for the braking system of vehicle, feature exist according to claim 1
In being additionally provided with the second resetting apparatus in the valve body, the second resetting apparatus described in the application position often pushes away the spool
To the explosion-proof position.
11. the explosion-proof brake valve of the braking system according to claim 10 for vehicle, which is characterized in that described second
Resetting apparatus includes the second screw plug and second back-moving spring, and second screw plug is mounted on the valve body and described second resets
The both ends of spring are only against on second screw plug and the spool.
12. a kind of explosion-proof braking valve group of braking system for vehicle, which is characterized in that according to claim 1-11
The explosion-proof brake valve of described in any item braking systems for vehicle, the explosion-proof brake valve are two, and two described explosion-proof
Brake valve is configured to integral piece, and first hydraulic fluid ports of two explosion-proof brake valves is shared to be connected with the brake switch
Oily channel.
13. a kind of braking system for vehicle characterized by comprising
Brake switch and brake are connected between the brake switch and the brake by brake pipe；
Explosion-proof brake valve described in any one of -11 for the braking system of vehicle according to claim 1, first hydraulic fluid port
It is connected to the brake switch and second hydraulic fluid port is connected to the brake pipe.
14. the braking system according to claim 13 for vehicle, which is characterized in that the braking system is twinplex
Dynamic system, the brake is four and the explosion-proof brake valve is two, the first hydraulic fluid port point of two explosion-proof brake valves
It is not connected to the brake switch and the second hydraulic fluid port is connected to the brake pipe for connecting four brakes respectively.
15. a kind of vehicle, which is characterized in that the braking system including being used for vehicle described according to claim 13 or 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850550.1A CN107867275B (en) | 2016-09-26 | 2016-09-26 | Explosion-proof brake valve, explosion-proof braking valve group, braking system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850550.1A CN107867275B (en) | 2016-09-26 | 2016-09-26 | Explosion-proof brake valve, explosion-proof braking valve group, braking system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107867275A CN107867275A (en) | 2018-04-03 |
| CN107867275B true CN107867275B (en) | 2019-11-22 |
Family
ID=61751763
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850550.1A Active CN107867275B (en) | 2016-09-26 | 2016-09-26 | Explosion-proof brake valve, explosion-proof braking valve group, braking system and vehicle |
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| Country | Link |
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| CN (1) | CN107867275B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400863A (en) * | 1971-10-02 | 1975-07-16 | Bosch Gmbh Robert | Two-circuit braking systems |
| EP0015192A1 (en) * | 1979-02-14 | 1980-09-03 | BENDITALIA S.p.A. | Safety valve for vacuum control circuits |
| CN2045363U (en) * | 1988-12-23 | 1989-10-04 | 史占彪 | Three way valve for realizing braking of vehicle with single-pump and two-pipeline |
| CN2068931U (en) * | 1990-03-08 | 1991-01-09 | 黎廷均 | Auto-controlling and leaking-proof wye for automobile braking system |
| CN2372208Y (en) * | 1999-04-16 | 2000-04-05 | 廖娟 | Hydraulic brake pipeline safety valve |
| CN2430329Y (en) * | 1999-10-29 | 2001-05-16 | 黄友敏 | Safety protector for damage of brake oil and air pipeline |
| CN2707585Y (en) * | 2004-07-08 | 2005-07-06 | 韩昌求 | Safety four-way current dividing device |
-
2016
- 2016-09-26 CN CN201610850550.1A patent/CN107867275B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400863A (en) * | 1971-10-02 | 1975-07-16 | Bosch Gmbh Robert | Two-circuit braking systems |
| EP0015192A1 (en) * | 1979-02-14 | 1980-09-03 | BENDITALIA S.p.A. | Safety valve for vacuum control circuits |
| CN2045363U (en) * | 1988-12-23 | 1989-10-04 | 史占彪 | Three way valve for realizing braking of vehicle with single-pump and two-pipeline |
| CN2068931U (en) * | 1990-03-08 | 1991-01-09 | 黎廷均 | Auto-controlling and leaking-proof wye for automobile braking system |
| CN2372208Y (en) * | 1999-04-16 | 2000-04-05 | 廖娟 | Hydraulic brake pipeline safety valve |
| CN2430329Y (en) * | 1999-10-29 | 2001-05-16 | 黄友敏 | Safety protector for damage of brake oil and air pipeline |
| CN2707585Y (en) * | 2004-07-08 | 2005-07-06 | 韩昌求 | Safety four-way current dividing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107867275A (en) | 2018-04-03 |
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