CN104163167B - Air brake control system, method and device and wheel type engineering machinery - Google Patents

Abstract

The invention relates to the technical field of engineering machinery, and discloses a pneumatic brake control system, method and device and wheel type engineering machinery, which are used for improving the safety and reliability of the wheel type engineering machinery. The system comprises: an air cylinder; the air brake system comprises at least two air brake circuits, wherein each air brake circuit comprises an electromagnetic proportional pressure regulating valve for regulating the brake pressure of a brake air chamber; the first pressure detection device is used for detecting the working pressure of the suspension oil cylinder corresponding to at least two air brake circuits respectively; the control device is respectively in signal connection with each electromagnetic proportional pressure regulating valve and the first pressure detection device and is used for obtaining the target brake pressure of the brake chamber corresponding to each air brake loop according to the functional relation between the working pressure of the suspension oil cylinder corresponding to at least two air brake loops and the target brake pressure of the brake chamber corresponding to each air brake loop; and outputting a first pressure adjusting signal to the corresponding electromagnetic proportional pressure regulating valve according to the target brake pressure of each brake air chamber.

Description

Air-pressure brake control system, method, device and industrial wheeled equipment

Technical field

The present invention relates to technical field of engineering machinery, more particularly to a kind of air-pressure brake control system, method, device and Industrial wheeled equipment.

Background technology

Using the multiaxis industrial wheeled equipment of air-pressure brake, carry greatly because it has axle, during braking, axle load transfer is big, and There are multiple load working conditions, in order that can safely and effectively make under industrial wheeled equipment different loads operating mode during its road traveling Dynamic, need to realize brake force during braking and can adjust so that brake force is matched with different loads operating mode.

As shown in figure 1, existing Pneumatic braking system includes propons brake circuit and back axle brake circuit, each braking Loop includes: gas receiver 1, brake valve 2, electromagnetic switch valve 9, pressure-regulating valve 10, relay valve 3 and brake chamber 5, when in difference When realizing braking under load working condition, continued by adjusting the break-make of electromagnetic switch valve and the pressure size of pressure-regulating valve and then regulation Air pressure at dynamic valve control mouth, and then adjust the braking pressure size entering brake chamber, realize under different loads operating mode not Same brake force.

However, inventors herein have recognized that, the Pneumatic braking system of prior art can only pass through electromagnetic switch valve and pressure The brake force under limited load working condition is realized in the combination of force regulating valve, range of applicability less it is impossible to meet Arbitrary Loads operating mode Under brake force adjustment, however it remains brake force cannot mate with load working condition and be led to not effective brake so that safe hidden Trouble yet suffers from.

Content of the invention

The invention provides a kind of air-pressure brake control system, method, device and industrial wheeled equipment, in order to improve air pressure The braking ability of braking control system, and then improve the security reliability of industrial wheeled equipment.

The air-pressure brake control system that the present invention provides, comprising:

Gas receiver；

At least two barometric brake circuits, comprising: brake valve, control described at least two barometric brake circuits to lead to simultaneously Disconnected, described brake valve includes the first air inlet and the first gas outlet, and described first air inlet is connected with described gas receiver；Wherein every One barometric brake circuit, also includes relay valve, brake chamber and solenoid-operated proportional pressure regulator valve, and described relay valve includes the second air inlet Mouthful, the second gas outlet and control mouth, described first gas outlet is connected with described control mouth, described second air inlet and described gas storage Cylinder is connected, and described second gas outlet is connected with described brake chamber, and described solenoid-operated proportional pressure regulator valve is used for adjusting brake chamber Brake pressure；

First pressure detection means, for detecting the described at least two barometric brake circuits corresponding hanging oil cylinder of difference Operating pressure；

Control device, is connected with solenoid-operated proportional pressure regulator valve each described and first pressure detection means signal respectively, uses According to described at least two barometric brake circuits, the operating pressure of corresponding hanging oil cylinder and each air-pressure brake return respectively The functional relationship of the target braking pressure of the corresponding brake chamber in road, obtains the corresponding brake chamber of each barometric brake circuit Target braking pressure；Target braking pressure according to the corresponding brake chamber of each barometric brake circuit described is to corresponding Solenoid-operated proportional pressure regulator valve output first pressure adjustment signal.

In technical solution of the present invention, each barometric brake circuit of at least two barometric brake circuits is included for adjusting The solenoid-operated proportional pressure regulator valve of the brake pressure of whole brake chamber, control device directly can detect dress according to first pressure in real time The operating pressure of corresponding hanging oil cylinder obtains each air-pressure brake and returns respectively to put at least two barometric brake circuits of detection The target braking pressure of the corresponding brake chamber in road；Target according to the corresponding brake chamber of each barometric brake circuit described Brake pressure adjusts signal to corresponding solenoid-operated proportional pressure regulator valve output first pressure, thus realize industrial wheeled equipment being in not The reasonable distribution of brake pressure when simultaneously braking with least two barometric brake circuits under load working condition, braking ability is relatively Height, and then improve the security reliability of industrial wheeled equipment.

Preferably, each barometric brake circuit also includes: second pressure detection means, for detecting described brake chamber Current brake pressure；

Described control device, is connected with second pressure detection means signal each described, further for when described system When the current brake pressure of room of taking offence is not zero with the deviation of described target braking pressure, to the corresponding electromagnetism of described brake chamber Proportional dump valve output makes second that the current brake pressure of described brake chamber and the deviation of described target braking pressure are zero Pressure adjusts signal.

Adopt when at least two barometric brake circuits of the air-pressure brake control system that the technical program provides are braked simultaneously Closed loop control, to adjust the brake pressure of reasonable distribution, improves control accuracy further, thus improving air-pressure brake control further The braking ability of system processed, braking safety is higher, improves the security reliability of industrial wheeled equipment.

Preferably, described solenoid-operated proportional pressure regulator valve includes the 3rd air inlet and the 3rd gas outlet, described solenoid-operated proportional pressure regulation Valve is serially connected between described second air inlet and described gas receiver, and described 3rd air inlet is connected with described gas receiver, and described Three gas outlets are connected with described second air inlet；Or, described solenoid-operated proportional pressure regulator valve is serially connected with described first gas outlet and institute State between control mouth, described 3rd air inlet is connected with described first gas outlet, described 3rd gas outlet and described control mouth phase Even.

When the industrial wheeled equipment of the air-pressure brake control system providing in view of technique scheme needs braking, according to The conjunction of brake pressure when at least two barometric brake circuits that industrial wheeled equipment is under different loads operating mode are braked simultaneously Reason is distributed so that industrial wheeled equipment is reliably braked it is impossible to meet industrial wheeled equipment needs braking deceleration when driving, Namely cannot meet a little does not make the requirement of industrial wheeled equipment braking completely in a flash, it is therefore preferred that this air-pressure brake control System processed, also includes:

The normally open solenoid valve of each described solenoid-operated proportional pressure regulator valve setting corresponding, is connected to described solenoid-operated proportional pressure regulator valve The 3rd air inlet and the 3rd gas outlet between；

Electric switch, is electrically connected with described normally open solenoid valve and described control device, the aperture of described brake valve is complete Described electric switch is controlled to connect when opening.

The air-pressure brake control system that the technical program provides meets industrial wheeled equipment simultaneously needs a braking to subtract The requirement of speed and completely braking, the suitability is higher.

Preferably, described brake valve is brake pedal valve, and described electric switch is the system being arranged at described brake pedal valve Travel switch at dynamic pedal full stroke.

Preferably, described at least two barometric brake circuits include the first barometric brake circuit and the second air-pressure brake returns Road.

Preferably, described first pressure adjustment signal is voltage adjustment signal or current modifying signal；And/or, described Two pressure adjustment signals are voltage adjustment signal or current modifying signal.

Based on identical inventive concept, the present invention also provides a kind of air-pressure brake control method, is applied to aforementioned techniques side In the air-pressure brake control system that case provides, comprising:

Receive the operating pressure of the described at least two barometric brake circuits corresponding hanging oil cylinder of difference；

According to the described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and each air pressure respectively The functional relationship of the target braking pressure of the corresponding brake chamber of brake circuit, obtains the corresponding system of each barometric brake circuit Take offence the target braking pressure of room；

Target braking pressure according to the corresponding brake chamber of each barometric brake circuit described is to corresponding electromagnetism ratio Example pressure regulator valve output first pressure adjustment signal.

This control method is capable of at least two air-pressure brakes that industrial wheeled equipment is under different loads operating mode and returns The reasonable distribution of brake pressure when road is braked simultaneously, effectively prevent and occur in braking that brake force is excessive and wheel lock up Or brake force is too small and situation that wheel is not checked occurs, and improves the braking ability of air-pressure brake control system, brake safe Property higher, and then improve industrial wheeled equipment security reliability.

Based on identical inventive concept, the present invention also provides a kind of air-pressure brake control device, is applied to aforementioned techniques side In the air-pressure brake control system that case provides, comprising:

Receiver module, for receiving the work pressure of the described at least two barometric brake circuits corresponding hanging oil cylinder of difference Power；

First control module, for the work according to the described at least two barometric brake circuits corresponding hanging oil cylinder of difference The functional relationship of the target braking pressure of pressure brake chamber corresponding with each barometric brake circuit obtains each air pressure The target braking pressure of the corresponding brake chamber of brake circuit；

Second control module, for the target braking pressure according to the corresponding brake chamber of each barometric brake circuit described Power is to corresponding solenoid-operated proportional pressure regulator valve output first pressure adjustment signal.

This control device is capable of at least two air-pressure brakes that industrial wheeled equipment is under different loads operating mode and returns The reasonable distribution of brake pressure when road is braked simultaneously, effectively prevent and occur in braking that brake force is excessive and wheel lock up Or brake force is too small and situation that wheel is not checked occurs, and improves the braking ability of air-pressure brake control system, brake safe Property higher, and then improve industrial wheeled equipment security reliability.

Present invention also offers a kind of industrial wheeled equipment crane, including the air pressure system described in aforementioned arbitrary technical scheme Autocontrol system, effectively improves the braking ability of air-pressure brake control system, and then the safety of raising industrial wheeled equipment can By property.

Brief description

Fig. 1 is the structural representation of existing Pneumatic braking system；

Fig. 2 is the structural representation of air-pressure brake control system one embodiment of the present invention；

Fig. 3 is the structural representation of another embodiment of air-pressure brake control system of the present invention；

Fig. 4 is the structural representation of the another embodiment of air-pressure brake control system of the present invention；

Fig. 5 is the schematic flow sheet of air-pressure brake control method one embodiment of the present invention；

Fig. 6 is the schematic flow sheet of another embodiment of air-pressure brake control method of the present invention；

Fig. 7 is the structural representation of another embodiment of air-pressure brake control device of the present invention；

Fig. 8 is the structural representation of air-pressure brake control device one embodiment of the present invention.

Reference:

1- gas receiver 1a- the first gas receiver

1b- the second gas receiver 2- brake valve

2a- first chamber 2b- second chamber

21- the first air inlet 22- the first gas outlet

3- relay valve 31- the second air inlet

32- the second gas outlet 33- control mouth

4- solenoid-operated proportional pressure regulator valve 41- the 3rd air inlet

42- the 3rd gas outlet 5- brake chamber

6- first pressure detection means 7- control device

8- second pressure detection means 9- electromagnetic switch valve

10- pressure-regulating valve 11- receiver module

12- the first control module 13- the second control module

14- the 3rd control module 15- normally open solenoid valve

16- electric switch

Specific embodiment

In order to improve the braking ability of air-pressure brake control system, and then the security reliability of raising industrial wheeled equipment, Embodiments provide a kind of air-pressure brake control system, method, device and industrial wheeled equipment.In this technical scheme In, each barometric brake circuit of at least two barometric brake circuits includes the electricity of the brake pressure for adjusting brake chamber Magnetic proportional dump valve, at least two air-pressure brakes that control device can directly detect according to first pressure detection means in real time The operating pressure of loop corresponding hanging oil cylinder respectively obtains the target system of the corresponding brake chamber of each barometric brake circuit Dynamic pressure；Target braking pressure according to the corresponding brake chamber of each barometric brake circuit is to corresponding solenoid-operated proportional pressure regulation Valve output first pressure adjustment signal, thus realize industrial wheeled equipment to be at least two air pressure systems under different loads operating mode The reasonable distribution of brake pressure when dynamic loop is braked simultaneously, braking ability is higher, and then improves the safety of industrial wheeled equipment Reliability.

As shown in Fig. 2 the air-pressure brake control system that first embodiment of the invention is provided, comprising:

Gas receiver 1；

At least two barometric brake circuits, comprising: brake valve 2, control at least two barometric brake circuits break-make simultaneously, system Dynamic valve 2 includes the first air inlet 21 and the first gas outlet 22, and the first air inlet 21 is connected with gas receiver 1；Each of which air pressure Brake circuit, also includes relay valve 3, brake chamber 5 and solenoid-operated proportional pressure regulator valve 4, relay valve 3 include the second air inlet 31, Two gas outlets 32 and control mouth 33, the first gas outlet 22 is connected with control mouth 33, and the second air inlet 31 is connected with gas receiver 1, the Two gas outlets 32 are connected with brake chamber 5, and solenoid-operated proportional pressure regulator valve 4 is used for adjusting the brake pressure of brake chamber 5；

First pressure detection means 6, for detecting the work of at least two barometric brake circuits corresponding hanging oil cylinder of difference Make pressure；

Control device 7, is connected with each solenoid-operated proportional pressure regulator valve 4 and first pressure detection means 6 signal respectively, is used for Corresponding with each barometric brake circuit according to the operating pressure of at least two barometric brake circuits corresponding hanging oil cylinder of difference The target braking pressure of brake chamber functional relationship, obtain the target of the corresponding brake chamber of each barometric brake circuit Brake pressure；Adjusted to corresponding solenoid-operated proportional according to the target braking pressure of the corresponding brake chamber of each barometric brake circuit Pressure valve 4 output first pressure adjustment signal.

When the industrial wheeled equipment of the air-pressure brake control system that application the present embodiment provides needs braking, first pressure is examined Survey the operating pressure of the device 6 detection at least two barometric brake circuit corresponding hanging oil cylinder of difference, obtain industrial wheeled equipment When being in different load-carryings difference operating mode, at least two barometric brake circuits are distinguished the operating pressure of corresponding hanging oil cylinder and will be examined Measured value sends to control device 7；Control device 7 is according to the work of at least two barometric brake circuits corresponding hanging oil cylinder of difference The functional relationship of the target braking pressure of pressure brake chamber corresponding with each barometric brake circuit, obtains each air pressure The target braking pressure of the corresponding brake chamber of brake circuit；Mesh according to the corresponding brake chamber of each barometric brake circuit Mark brake pressure is to corresponding solenoid-operated proportional pressure regulator valve 4 output first pressure adjustment signal.

That is, compared in prior art rule of thumb regulating brake force to meet different load working conditions, this The air-pressure brake control system that bright embodiment provides achieves at least two that industrial wheeled equipment is under different loads operating mode The reasonable distribution of brake pressure when barometric brake circuit is braked simultaneously, effectively prevent that brake force excessive in braking And wheel lock up or brake force are too small and situation that wheel is not checked occurs, thus improve the braking of air-pressure brake control system Performance, braking safety is higher, and then improves the security reliability of industrial wheeled equipment；

The air-pressure brake control system that the present embodiment provides, braking pressure when at least two barometric brake circuits are braked simultaneously The distribution of power is specifically to be distributed according to the operating pressure of at least two barometric brake circuits corresponding hanging oil cylinder respectively, often The operating pressure of the corresponding hanging oil cylinder of one barometric brake circuit can more accurately reflect the difference of industrial wheeled equipment Carload under load working condition is so that the distribution of brake pressure when at least two barometric brake circuits are braked is more accurate simultaneously Really；

And, control device exports first pressure and adjusts the nothing that signal is capable of brake pressure to solenoid-operated proportional pressure regulator valve Level adjustment is so that at least two barometric brake circuits can more mate when braking under the different loads operating mode of industrial wheeled equipment Carload, the scope of application is wider, and safety is higher.

Solenoid-operated proportional pressure regulator valve 4 generally includes the 3rd air inlet 41 and the 3rd gas outlet 42, in the present embodiment, electromagnetism ratio The set location of example pressure regulator valve has multiple, disclosure satisfy that solenoid-operated proportional pressure regulator valve for the brake pressure adjusting brake chamber is Can, for example:

With reference to shown in Fig. 2, solenoid-operated proportional pressure regulator valve 4 can be arranged at the second air inlet 31 of relay valve 3, i.e. electromagnetism ratio Example pressure regulator valve is serially connected between the second air inlet 31 and gas receiver 1, now, the 3rd air inlet 41 of solenoid-operated proportional pressure regulator valve 4 with Gas receiver 1 is connected, and the 3rd gas outlet 42 of solenoid-operated proportional pressure regulator valve 4 is connected with the second air inlet 31 of relay valve 3, by controlling The gas flow entering relay valve 3, to adjust the air pressure at the second gas outlet 32 of relay valve 3, reaches adjustment brake chamber 5 The target of brake pressure；

Or, electromagnetic proportional valve can also be arranged at the control mouth of relay valve, and that is, solenoid-operated proportional pressure regulator valve is serially connected with Between one gas outlet and the control mouth of relay valve, now, the first gas outlet of the 3rd air inlet of electromagnetic proportional valve and brake valve It is connected, the 3rd gas outlet of electromagnetic proportional valve is connected with the control mouth of relay valve, adjusted by controlling the opening degree of relay valve The air pressure in the exit of relay valve, reaches the target of the brake pressure of adjustment brake chamber；

Certainly, electromagnetic proportional valve can also be arranged at the second gas outlet of relay valve, now, the 3rd of electromagnetic proportional valve the Air inlet is connected with the second gas outlet of relay valve, and the 3rd gas outlet of electromagnetic proportional valve is connected with brake chamber, directly adjusts Enter the pressure of the gas of brake chamber, reach the target of the brake pressure of adjustment brake chamber.

As shown in figure 3, present invention also offers second embodiment, on the basis of first embodiment, air-pressure brake controls Each barometric brake circuit of system also includes: second pressure detection means 8, for the current brake of detection braking air chamber 5 Pressure；

Control device 7, is connected with each second pressure detection means 8 signal further, for working as when brake chamber When the deviation of front brake pressure and its target braking pressure is not zero, to the output of this brake chamber corresponding solenoid-operated proportional pressure regulator valve Make the second pressure adjustment signal that the current brake pressure of this brake chamber and the deviation of its target braking pressure are zero.

The air-pressure brake control system that the present embodiment provides, control device 7 is corresponding according to each barometric brake circuit After the target braking pressure of brake chamber adjusts signal to corresponding solenoid-operated proportional pressure regulator valve output first pressure, second pressure The current brake pressure of detection means 8 real-time detection brake chamber simultaneously exports this detected value to control device 7, control device 7 The current brake pressure of brake chamber and its target braking pressure are compared, when this brake chamber current brake pressure with When the deviation of its target braking pressure is not zero, control device 7 is to this brake chamber corresponding solenoid-operated proportional pressure regulator valve 4 output the Two pressure adjustment signals, so that the current brake pressure of this brake chamber is zero with the deviation of its target braking pressure, that is, Say, at least two barometric brake circuits of the air-pressure brake control system that the present embodiment provides adopt closed loop control when braking simultaneously To adjust the brake pressure of reasonable distribution, to improve control accuracy further, thus improving air-pressure brake control system further Braking ability, braking safety is higher, improves the security reliability of industrial wheeled equipment.

When the industrial wheeled equipment of the air-pressure brake control system being provided using above-described embodiment needs braking, according to wheeled Reasonable point of brake pressure when at least two barometric brake circuits that engineering machinery is under different loads operating mode are braked simultaneously Join so that industrial wheeled equipment is reliably braked it is impossible to meet industrial wheeled equipment needs braking deceleration when driving, also It is to meet a little the requirement not making industrial wheeled equipment braking completely in a flash, therefore, with reference to shown in Fig. 4, the present invention the 3rd Embodiment further provides a kind of air-pressure brake control system, on the basis of above-described embodiment, also includes:

The normally open solenoid valve 15 of corresponding each solenoid-operated proportional pressure regulator valve 4 setting, is connected to the of solenoid-operated proportional pressure regulator valve 4 Between three air inlets 41 and the 3rd gas outlet 42；

Electric switch 16, with normally open solenoid valve and control device electrical connection, the control when aperture of brake valve 2 fully opens Electric switch 16 is connected.

In the present embodiment, electric switch and normally open solenoid valve and control device electrical connection, when that is, electric switch is connected, Normally open solenoid valve obtains electric, control device startup；When electric switch disconnects, normally open solenoid valve dead electricity, control device is closed.Normally opened electricity Magnet valve 15 is connected between the 3rd air inlet 41 and the 3rd gas outlet 42 that is to say, that the 3rd air inlet 41 and the 3rd gas outlet 42 Between there is the pipeline of a normal open.The aperture of brake valve fully opens needs industrial wheeled equipment to brake completely, brake valve Aperture does not fully open, that is, point is stopped, and now electric switch disconnects.

The air-pressure brake control system that the present embodiment provides, when point brake needs braking deceleration, the aperture of brake valve is not Fully open, electric switch disconnects, now normally open solenoid valve 15 dead electricity, and normally open solenoid valve 15 is in the conduction state, and control dress Put 7 closings, the gas of gas receiver is directly entered relay valve from gas receiver through normally open solenoid valve 15 and then enters brake chamber, and then Realize point braking to slow down；

When needing to brake completely, the aperture of brake valve 2 fully opens, and electric switch is connected, and now normally open solenoid valve 15 obtains Electricity, normally open solenoid valve 15 is off, and control device 7 starts, and now, the gas of gas receiver cannot be frequent from gas receiver Open electromagnetic valve 15 is directly entered relay valve, and air-pressure brake control system is under different loads operating mode according to industrial wheeled equipment Brake pressure when at least two barometric brake circuits are braked simultaneously carries out reasonable distribution so that industrial wheeled equipment is reliably made Dynamic.Therefore, the air-pressure brake control system that the present embodiment provides meets industrial wheeled equipment simultaneously needs a braking to slow down The requirement of braking completely, the suitability is higher.

The species of brake valve has multiple, and when brake valve adopts brake pedal valve, electric switch can be for being arranged at braking Travel switch at the brake pedal full stroke of treadle valve.When depression of brake pedal valve make brake pedal movement to full stroke at When, the switch contact of travel switch is triggered connection, and when brake pedal does not move at full stroke, the switch of travel switch touches Put the connection that is not triggered.

It should be noted that first pressure adjustment signal can be voltage adjustment signal or electric current in various embodiments of the present invention Adjustment signal；Second pressure adjustment signal can be equally voltage adjustment signal or current modifying signal；Various embodiments of the present invention The air-pressure brake control system providing includes at least two barometric brake circuits, and the particular number of barometric brake circuit does not limit Determine, the axletree number with specific reference to industrial wheeled equipment and brake request determine；First air inlet in various embodiments of the present invention, second Air inlet, the 3rd air inlet, the first gas outlet, the second gas outlet, the 3rd gas outlet are only used for distinguishing the air inlet on different valve bodies Mouth and gas outlet, are not the quantity for distinguishing the enterprising QI KOU of valve body and gas outlet.

First pressure detection means and second pressure detection means can be pressure transducer；The particular type of control device Do not limit, for example, can be Programmable Logic Controller, or vehicle-mounted cpu (central processing unit, central processing unit, referred to as Cpu) etc..

Below two barometric brake circuits, the respectively first barometric brake circuit and are included with air-pressure brake control system As a example two barometric brake circuits and be described with reference to the accompanying drawings the present invention, wherein, the first barometric brake circuit is used for propons and brakes, Second barometric brake circuit is used for back axle and brakes.

Air-pressure brake control system fourth embodiment as shown in Figure 4 includes:

First gas receiver 1a, the second gas receiver 1b；

Two barometric brake circuits: brake valve 2, control two barometric brake circuit break-makes simultaneously, brake valve 2 includes first Chamber 2a and second chamber 2b, first chamber 2a of brake valve 2 is connected with the first gas receiver 1a, second chamber 2b and the second gas storage Cylinder 1b is connected, and first chamber 2a and second chamber 2b are connected to the first barometric brake circuit and the second barometric brake circuit In；

First barometric brake circuit also includes: 3, two brake chambers 5 of relay valve, normally open solenoid valve 15 and solenoid-operated proportional are adjusted Pressure valve 4, first chamber 2a of brake valve 2 is connected with the control mouth 33 of relay valve 3, the 3rd air inlet of solenoid-operated proportional pressure regulator valve 4 41 are connected with the first gas receiver 1a, the 3rd gas outlet 42 of solenoid-operated proportional pressure regulator valve 4 and the second air inlet 31 phase of relay valve 3 Even, the second gas outlet 32 of relay valve 3 is connected with two brake chambers 5, and normally open solenoid valve 15 is connected to solenoid-operated proportional pressure regulator valve 4 The 3rd air inlet 41 and the 3rd gas outlet 42 between；

Second barometric brake circuit also includes: 3, two brake chambers 5 of relay valve, normally open solenoid valve 15 and solenoid-operated proportional are adjusted Pressure valve 4, second chamber 2b of brake valve 2 is connected with the control mouth 33 of relay valve 3, the 3rd air inlet of solenoid-operated proportional pressure regulator valve 4 41 are connected with the second gas receiver 1b, the 3rd gas outlet 42 of solenoid-operated proportional pressure regulator valve 4 and the second air inlet 31 phase of relay valve 3 Even, the second gas outlet 32 of relay valve 3 is connected with two brake chambers 5, and normally open solenoid valve 15 is connected to solenoid-operated proportional pressure regulator valve 4 The 3rd air inlet 41 and the 3rd gas outlet 42 between；

First pressure detection means 6, for detecting the operating pressure of propons hanging oil cylinder and the work of Rear-axle suspension oil cylinder Pressure；

Two second pressure detection means 8, are respectively used to detect the current system of the brake chamber of two barometric brake circuits Dynamic pressure, being arranged at the second gas outlet 32 of relay valve 3 of second pressure detection means 8；

Control device 7, respectively with two solenoid-operated proportional pressure regulator valves 4, first pressure detection means 6 and two second pressure inspections Survey the connection of device 8 signal, the operating pressure of the operating pressure according to propons hanging oil cylinder and Rear-axle suspension oil cylinder and each gas It is corresponding that the functional relationship of the target braking pressure of the pressure corresponding brake chamber of brake circuit obtains each barometric brake circuit The target braking pressure of brake chamber；Target braking pressure according to the corresponding brake chamber of each barometric brake circuit obtaining Power is to corresponding solenoid-operated proportional pressure regulator valve 4 output first pressure adjustment signal；Current brake pressure and its mesh when brake chamber When the deviation of mark brake pressure is not zero, make this brake chamber 5 to the output of this brake chamber 5 corresponding solenoid-operated proportional pressure regulator valve 4 Current brake pressure and its target braking pressure deviation be zero second pressure adjustment signal；

And electric switch 16, it is electrically connected with normally open solenoid valve 15 and control device 7, the aperture of brake valve 2 is beaten completely When opening, electric switch is connected, and wherein, brake valve 2 is brake pedal valve, and electric switch 16 is the braking being arranged at brake pedal valve Travel switch at pedal full stroke.

The operating pressure of the operating pressure according to propons hanging oil cylinder for the control device and Rear-axle suspension oil cylinder in the present embodiment The functional relationship of the target braking pressure of brake chamber corresponding with each barometric brake circuit obtains each air-pressure brake The target braking pressure of the corresponding brake chamber in loop, specifically includes:

The operating pressure of the operating pressure according to propons hanging oil cylinder and Rear-axle suspension oil cylinder and the first air-pressure brake respectively The functional relationship of brake force needed for the corresponding vehicle bridge in loop (namely propons) and the corresponding vehicle bridge of the second barometric brake circuit The functional relationship of the brake force needed for (namely back axle), obtains the corresponding vehicle bridge of the first barometric brake circuit (namely propons) Brake force needed for required brake force and the corresponding vehicle bridge of the second barometric brake circuit (namely back axle)；

Brake force according to needed for the corresponding vehicle bridge of the first barometric brake circuit (namely propons) and the first air-pressure brake The functional relationship of the target braking pressure of the corresponding brake chamber in loop obtains the corresponding brake chamber of the first barometric brake circuit Target braking pressure；

Brake force according to needed for the corresponding vehicle bridge of the second barometric brake circuit (namely back axle) and the second air-pressure brake The functional relationship of the target braking pressure of the corresponding brake chamber in loop obtains the corresponding brake chamber of the second barometric brake circuit Target braking pressure.

In the present embodiment, respectively the operating pressure of the operating pressure according to propons hanging oil cylinder and Rear-axle suspension oil cylinder with The functional relationship of brake force needed for the corresponding vehicle bridge of first barometric brake circuit (namely propons) and the second air-pressure brake return The functional relationship of the brake force needed for the corresponding vehicle bridge in road (namely back axle), obtains the corresponding vehicle bridge of the first barometric brake circuit Brake force needed for (namely propons) and the brake force needed for the corresponding vehicle bridge of the second barometric brake circuit (namely back axle) Method have multiple, for example can specifically include:

Operating pressure p according to propons hanging oil cylinder_iOperating pressure p with Rear-axle suspension oil cylinder_jLetter with complete vehicle weight g Number relation obtains complete vehicle weight g,

Operating pressure p of propons hanging oil cylinder_iOperating pressure p with Rear-axle suspension oil cylinder_jClose with the function of complete vehicle weight g System can be

$g=\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1---\left(1\right)$

Wherein, i is the quantity of the corresponding hanging oil cylinder of the first barometric brake circuit, and j is that the second barometric brake circuit corresponds to Hanging oil cylinder quantity,For corresponding vehicle bridge spring loading capacity (the namely propons spring load-carrying of the first barometric brake circuit Amount),For the second barometric brake circuit corresponding vehicle bridge spring loading capacity (namely back axle spring loading capacity), g₁For car load Unspringing weight, a is the area bearing oil pressure in hanging oil cylinder, i, j, g₁True with specific reference to the vehicle of industrial wheeled equipment with a Fixed；

Brake force f according to complete vehicle weight g and car load_uFunctional relationship obtain brake force f of car load_u,

Complete vehicle weight g and brake force f of car load_uFunctional relationship can be

$f_u=\frac{j}{g}g---\left(2\right)$

J is the braking deceleration setting, and the value here of braking deceleration j is not specifically limited, can be according to wheeled engineering The vehicle of machinery and national Specification determine；

The operating pressure of the operating pressure according to propons hanging oil cylinder and Rear-axle suspension oil cylinder and the position of car load center of gravity Functional relationship, obtains the position of car load center of gravity,

The function of the position of the operating pressure of the operating pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder and car load center of gravity Relation can be

$l_i=\frac{\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a}{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a}\·l---\left(3\right)$

Wherein, l is wheelbase, and the position of car load center of gravity is (l_i, l_j), l_iFor car load center of gravity and the first barometric brake circuit pair Between the centrage of axletree (i.e. front axle) answered industrial wheeled equipment all axletrees distance in the plane, l_jFor car load In all axletrees of industrial wheeled equipment between the centrage of center of gravity axletree corresponding with the second barometric brake circuit (i.e. rear axle) Distance in the plane, and there is relational expression l_j=l-l_i(4)；

Brake force f according to needed for propons_u1, brake force f needed for back axle_u2, and the functional relationship with complete vehicle weight g, Obtain the brake force needed for propons and the brake force needed for back axle,

Brake force f needed for propons_u1, brake force f needed for back axle_u2, and do not limit with the functional relationship of complete vehicle weight g, It can be for example the ideal Distribution computing formula (preferable braking force distribution i curve) of vehicle front-rear axle brake force

$\left\{\begin{array}{c}{f}_{u2}=\frac{1}{2}[\frac{g}{h_g}\sqrt{l_j^2+\frac{{4h}_{g}l}{g_i}{f}_{u1}}-(\frac{{\mathrm{gl}}_j}{h_g}+2f_{u1})\\ f_u=f_{u1}+f_{u2}\end{array}\right.---\left(\text{5}\right)$

Wherein, h_gFor the height of C.G. of car load, here is not specifically limited, because car load adopts hydro-pneumatic suspension system, Under different load working conditions, height of C.G. change is less, specifically can be according to the vehicle of industrial wheeled equipment and empirically determined；

Thus according to above-mentioned functional relation (1) (2) (3) (4) and (5) draw propons hanging oil cylinder operating pressure and Brake force needed for the operating pressure of Rear-axle suspension oil cylinder vehicle bridge corresponding with the first barometric brake circuit (namely propons) Functional relationship is

$f_{u1}=\frac{j^2{h}_g}{g^{2}l}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)+\frac{j}{g}\·\frac{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a}{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)$

The operating pressure of the operating pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder is corresponding with the second barometric brake circuit The functional relationship of the brake force needed for vehicle bridge (namely back axle) be

$f_{u2}=\frac{j}{g}\·\frac{\underset{i=1}{\overset{n}{\mathrm{\σ}}}{p}_{i}a}{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)-\frac{j^2{h}_g}{g^{2}l}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1).$

In various embodiments of the present invention, needed for the target braking pressure p1 of the brake chamber of the first brake circuit and propons Brake force f_u1Functional relationship, and the target braking pressure p2 of the brake chamber of the second brake circuit and braking needed for back axle Power f_u2Functional relationship here be not specifically limited, with specific reference to industrial wheeled equipment adopt brake determine, for example brake Device is disk brake or drum brake etc..

The present embodiment provide Pneumatic braking system work process particularly as follows:

When point brake needs braking deceleration, the brake pedal of brake pedal valve does not move at full stroke, travel switch Switch contact be not triggered connection, control device is closed, and normally open solenoid valve 15 dead electricity, and normally open solenoid valve 15 turns on, electromagnetism Pipeline between 3rd air inlet 41 of proportional dump valve 4 and the 3rd gas outlet 42 is in connected state, and the first air-pressure brake returns The gas of the first gas receiver 1a on road is directly entered relay valve 3 through normally open solenoid valve 15 and then enters brake chamber 5, and simultaneously second The gas of the second gas receiver 1b of barometric brake circuit is directly entered relay valve 3 through normally open solenoid valve 15 and then enters brake chamber 5, and then realize point braking deceleration；

When needing to brake completely, jam on brake valve 2, to full stroke, stroke is opened for the brake pedal movement of brake pedal valve The switch contact closing is triggered connections, and control device starts, and normally open solenoid valve 15 must be electric, and normally open solenoid valve 15 disconnects, and first Operating pressure p of pressure-detecting device 6 real-time detection propons hanging oil cylinder_iOperating pressure p with Rear-axle suspension oil cylinder_j, and will examine Measured value p_i、p_jSend to control device 7；

Control device 7 is according to detected value p_i、p_jIt is calculated the target braking pressure of the brake chamber 5 of the first brake circuit P1, the target braking pressure p2 of the brake chamber 5 of the second brake circuit；Control device 7 is according to target braking pressure p1, p2 respectively To corresponding solenoid-operated proportional pressure regulator valve 4 output first pressure adjustment signal, thus adjusting the relay valve 3 of two barometric brake circuits Gas outlet at air pressure so that the brake chamber 5 of the first brake circuit brake pressure be p1, the braking of the second brake circuit The brake pressure of air chamber 5 is p2；

Two second pressure detection means 8 simultaneously, detect the current system of the brake chamber 5 of the first barometric brake circuit respectively Dynamic pressure p1', current brake pressure p 2' of the brake chamber 5 of the second barometric brake circuit, and detected value p1', p2' are sent To control device 7, when the deviation of p1' and p1 is not zero, export second to this brake chamber corresponding solenoid-operated proportional pressure regulator valve 4 Pressure adjusts signal so that deviation is zero, when the deviation of p2' and p2 is not zero, to the corresponding solenoid-operated proportional of this brake chamber , so that deviation is zero, the brake chamber of final first brake circuit can be with target for pressure regulator valve 4 output second pressure adjustment signal Brake pressure p1 brake front axle, the brake chamber of the first brake circuit can brake back axle with target braking pressure p2, thus real The reliability braking of existing industrial wheeled equipment.

From above-mentioned work process, the air-pressure brake control system that the present embodiment provides can be according to industrial wheeled equipment Different operating modes reasonable distribution brake front axle and braking back axle in braking brake force, obtain industrial wheeled equipment and reliably brake, Improve the braking ability of air-pressure brake control system, braking safety is higher, and then the safety of raising industrial wheeled equipment can By property；And it is capable of a braking to slow down, the suitability is higher.

Based on identical inventive concept, as shown in figure 5, fifth embodiment of the invention additionally provides one kind is applied to aforementioned The air-pressure brake control method of the air-pressure brake control system that one embodiment provides, comprising:

Step 501: receive the operating pressure of at least two barometric brake circuits corresponding hanging oil cylinder of difference；

Step 502: according at least two barometric brake circuits respectively the operating pressure of corresponding hanging oil cylinder and each The functional relationship of the target braking pressure of the corresponding brake chamber of barometric brake circuit obtains each barometric brake circuit and corresponds to Brake chamber target braking pressure；

Step 503: the target braking pressure according to the corresponding brake chamber of each barometric brake circuit is to corresponding electricity Magnetic proportional dump valve output first pressure adjustment signal.

The control method that the present embodiment provides is capable of industrial wheeled equipment and is under different loads operating mode at least two The reasonable distribution of brake pressure when individual barometric brake circuit is braked simultaneously, effectively prevent and brake force mistake in braking Big and wheel lock up or brake force are too small and situation that wheel is not checked occurs, and improve the braking of air-pressure brake control system Can, braking safety is higher, and then improves the security reliability of industrial wheeled equipment.

When each barometric brake circuit of Pneumatic braking system also includes: second pressure detection means, for detection system Take offence room current brake pressure when, as shown in fig. 6, as control method one preferred embodiment of the present invention, specifically including:

Step 601: receive the operating pressure of at least two barometric brake circuits corresponding hanging oil cylinder of difference；

Step 602: according at least two barometric brake circuits respectively the operating pressure of corresponding hanging oil cylinder and each The functional relationship of the target braking pressure of the corresponding brake chamber of barometric brake circuit obtains each barometric brake circuit and corresponds to Brake chamber target braking pressure；

Step 603: the target braking pressure according to the corresponding brake chamber of each barometric brake circuit is to corresponding electricity Magnetic proportional dump valve output first pressure adjustment signal；

Step 604: receive the current brake pressure of the brake chamber of each barometric brake circuit；

Step 605: judge whether the current brake pressure of brake chamber and the deviation of its target braking pressure are zero, if It is, execution step 606, otherwise, return to step 604；

Step 606: make the current brake pressure of this brake chamber to the output of brake chamber corresponding solenoid-operated proportional pressure regulator valve Deviation with its target braking pressure is zero second pressure adjustment signal.

When at least two barometric brake circuits of air-pressure brake control system include the first barometric brake circuit and the second gas During pressure brake circuit, as a preferred embodiment of control method of the present invention, right respectively according at least two barometric brake circuits The function of the target braking pressure of the operating pressure of the hanging oil cylinder answered brake chamber corresponding with each barometric brake circuit Relation obtains the target braking pressure of the corresponding brake chamber of each barometric brake circuit, specifically includes:

Respectively according to the described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and the first gas respectively Needed for the functional relationship of brake force needed for the pressure corresponding vehicle bridge of brake circuit and the corresponding vehicle bridge of the second barometric brake circuit The functional relationship of brake force, obtains the brake force needed for the corresponding vehicle bridge of the first barometric brake circuit and the second barometric brake circuit Brake force needed for corresponding vehicle bridge；

Brake force according to needed for the corresponding vehicle bridge of the first barometric brake circuit and the corresponding system of the first barometric brake circuit Take offence room target braking pressure functional relationship obtain the corresponding brake chamber of the first barometric brake circuit target braking pressure Power；

Brake force according to needed for the corresponding vehicle bridge of the second barometric brake circuit and the corresponding system of the second barometric brake circuit Take offence room target braking pressure functional relationship obtain the corresponding brake chamber of the second barometric brake circuit target braking pressure Power.

Further, at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and the first air pressure system respectively The functional relationship of the brake force needed for the corresponding vehicle bridge in dynamic loop is specially

$f_{u1}=\frac{j^2{h}_g}{g^{2}l}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)+\frac{j}{g}\·\frac{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a}{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)$

At least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and the second barometric brake circuit pair respectively The functional relationship of the brake force needed for the vehicle bridge answered is specially

$f_{u2}=\frac{j}{g}\·\frac{\underset{i=1}{\overset{n}{\mathrm{\σ}}}{p}_{i}a}{\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)-\frac{j^2{h}_g}{g^{2}l}\·(\underset{i=1}{\overset{m}{\mathrm{\σ}}}{p}_{i}a+\underset{j=1}{\overset{n}{\mathrm{\σ}}}{p}_{j}a+g_1)\text{.}$

The beneficial effect of above example is the same, is not repeated herein and repeats.

Based on identical inventive concept, as shown in fig. 7, fifth embodiment of the invention additionally provides one kind is applied to aforementioned The air-pressure brake control device of the air-pressure brake control system that one embodiment provides, comprising:

Receiver module 11, for receiving the operating pressure of at least two barometric brake circuits corresponding hanging oil cylinder of difference；

First control module 12, for the work pressure according at least two barometric brake circuits corresponding hanging oil cylinder of difference The functional relationship of the target braking pressure of power brake chamber corresponding with each barometric brake circuit obtains each air pressure system The target braking pressure of the corresponding brake chamber in dynamic loop；

Second control module 13, for the target braking pressure according to the corresponding brake chamber of each barometric brake circuit To corresponding solenoid-operated proportional pressure regulator valve output first pressure adjustment signal.

Control device provided in an embodiment of the present invention is capable of industrial wheeled equipment and is under different loads operating mode extremely The reasonable distribution of brake pressure when few two barometric brake circuits are braked simultaneously, effectively prevent and braking in braking Power is excessive and wheel lock up or brake force are too small and situation that wheel is not checked occurs, and improves the system of air-pressure brake control system Dynamic performance, braking safety is higher, and then improves the security reliability of industrial wheeled equipment.

When each barometric brake circuit of Pneumatic braking system also includes: second pressure detection means, for detection system Take offence room current brake pressure when, as shown in figure 8, as a preferred embodiment of control device of the present invention,

Receiver module 11, is additionally operable to receive the current brake pressure of the brake chamber of each barometric brake circuit；This control Device processed also includes:

3rd control module 14, is not zero with the deviation of target braking pressure for the current brake pressure when brake chamber When, current brake pressure and the target braking pressure of brake chamber is made to the output of brake chamber corresponding solenoid-operated proportional pressure regulator valve Deviation is zero second pressure adjustment signal.

When at least two barometric brake circuits of air-pressure brake control system include the first barometric brake circuit and the second gas During pressure brake circuit, as a preferred embodiment of control device of the present invention, the first control module 12, specifically include:

First calculating sub module, for the work according at least two barometric brake circuits corresponding hanging oil cylinder of difference respectively Make the functional relationship of brake force needed for pressure vehicle bridge corresponding with the first barometric brake circuit and the second barometric brake circuit pair The functional relationship of the brake force needed for the vehicle bridge answered, obtains the brake force needed for the corresponding vehicle bridge of the first barometric brake circuit and Brake force needed for the corresponding vehicle bridge of two barometric brake circuits；

Second calculating sub module, for the brake force according to needed for the corresponding vehicle bridge of the first barometric brake circuit and the first gas The functional relationship of the target braking pressure of the pressure corresponding brake chamber of brake circuit obtains the corresponding system of the first barometric brake circuit Take offence the target braking pressure of room；

3rd calculating sub module, for the brake force according to needed for the corresponding vehicle bridge of the second barometric brake circuit and the second gas The functional relationship of the target braking pressure of the pressure corresponding brake chamber of brake circuit obtains the corresponding system of the second barometric brake circuit Take offence the target braking pressure of room.

The beneficial effect of above example is the same, is not repeated herein and repeats.

In addition, can be integrated in a processing module in each functional unit in each embodiment of the present invention it is also possible to It is that unit is individually physically present it is also possible to two or more units are integrated in a module.Above-mentioned integrated mould Block both can be to be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.If integrated module with The form of software function module is realized and as independent production marketing or when using it is also possible to be stored in a computer-readable Take in storage medium.

The embodiment of the present invention additionally provides a kind of industrial wheeled equipment, and the air-pressure brake including aforementioned any embodiment controls System, is at least two air pressure under different loads operating mode because this air-pressure brake control system achieves industrial wheeled equipment The reasonable distribution of brake pressure when brake circuit is braked simultaneously, effectively prevent and occur in braking that brake force is excessive and car Wheel locking or brake force are too small and situation that wheel is not checked occurs, and improve the braking ability of air-pressure brake control system, system Dynamic safety is higher, and then improves the security reliability of industrial wheeled equipment, therefore has the wheel of this air-pressure brake control system The braking safety of formula engineering machinery is higher, and its security reliability is also higher.

Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprise these changes and modification.

Claims (14)

1. a kind of air-pressure brake control system is it is characterised in that include:

Gas receiver；

At least two barometric brake circuits, comprising: control the brake valve of described at least two barometric brake circuits break-make simultaneously, institute State brake valve and include the first air inlet and the first gas outlet, described first air inlet is connected with described gas receiver；Wherein, each Barometric brake circuit, also includes relay valve, brake chamber and solenoid-operated proportional pressure regulator valve, described relay valve include the second air inlet, Second gas outlet and control mouth, described first gas outlet is connected with described control mouth, described second air inlet and described gas receiver It is connected, described second gas outlet is connected with described brake chamber, described solenoid-operated proportional pressure regulator valve is used for adjusting the system of brake chamber Dynamic pressure；Described solenoid-operated proportional pressure regulator valve includes the 3rd air inlet and the 3rd gas outlet, and described solenoid-operated proportional pressure regulator valve is serially connected with Between described second air inlet and described gas receiver, described 3rd air inlet is connected with described gas receiver, described 3rd gas outlet It is connected with described second air inlet；Or, described solenoid-operated proportional pressure regulator valve is serially connected with described first gas outlet and described control mouth Between, described 3rd air inlet is connected with described first gas outlet, and described 3rd gas outlet is connected with described control mouth；

First pressure detection means, for detecting the work of the described at least two barometric brake circuits corresponding hanging oil cylinder of difference Pressure；

Control device, is connected with solenoid-operated proportional pressure regulator valve each described and first pressure detection means signal, respectively for root According to the described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and each barometric brake circuit pair respectively The functional relationship of the target braking pressure of the brake chamber answered, obtains the mesh of the corresponding brake chamber of each barometric brake circuit Mark brake pressure；Target braking pressure according to the corresponding brake chamber of each barometric brake circuit described is to corresponding electromagnetism Proportional dump valve output first pressure adjustment signal；

The normally open solenoid valve of each described solenoid-operated proportional pressure regulator valve setting corresponding, is connected to the of described solenoid-operated proportional pressure regulator valve Between three air inlets and the 3rd gas outlet；

Electric switch, is electrically connected with described normally open solenoid valve and described control device, the aperture of described brake valve fully opens When control described electric switch to connect.

2. air-pressure brake control system as claimed in claim 1 is it is characterised in that each barometric brake circuit also includes: Second pressure detection means, for detecting the current brake pressure of described brake chamber；

Described control device, is connected with second pressure detection means signal each described, further for when described braking gas When the current brake pressure of room and the deviation of described target braking pressure are not zero, to the corresponding solenoid-operated proportional of described brake chamber Pressure regulator valve output makes the second pressure that the current brake pressure of described brake chamber and the deviation of described target braking pressure are zero Adjustment signal.

3. air-pressure brake control system as claimed in claim 1 it is characterised in that described brake valve be brake pedal valve, institute Stating electric switch is the travel switch being arranged at the brake pedal full stroke of described brake pedal valve.

4. described air-pressure brake control system as arbitrary in claims 1 to 3 is it is characterised in that described at least two air pressure systems Dynamic loop includes the first barometric brake circuit and the second barometric brake circuit.

5. air-pressure brake control system as claimed in claim 4 is it is characterised in that described first pressure adjustment signal is voltage Adjustment signal or current modifying signal；And/or, described second pressure adjustment signal is voltage adjustment signal or electric current adjustment letter Number.

6. a kind of industrial wheeled equipment is it is characterised in that the air-pressure brake including as described in any one of Claims 1 to 5 controls System.

7. a kind of air-pressure brake control method of crane is it is characterised in that be applied to air-pressure brake as claimed in claim 1 In control system, comprising:

Receive the operating pressure of the described at least two barometric brake circuits corresponding hanging oil cylinder of difference；

According to the described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and each air-pressure brake respectively The functional relationship of the target braking pressure of the corresponding brake chamber in loop, obtains each barometric brake circuit corresponding braking gas The target braking pressure of room；

Adjusted to corresponding solenoid-operated proportional according to the target braking pressure of the corresponding brake chamber of each barometric brake circuit described Pressure valve output first pressure adjustment signal.

8. air-pressure brake control method as claimed in claim 7 is it is characterised in that each gas of described Pneumatic braking system Pressure brake circuit also include: second pressure detection means, for detect described brake chamber current brake pressure when,

Described air-pressure brake control method also includes:

Receive the current brake pressure of the brake chamber of each described barometric brake circuit；

When the current brake pressure of described brake chamber is not zero with the deviation of described target braking pressure, to described braking gas Room corresponding solenoid-operated proportional pressure regulator valve output makes the current brake pressure of described brake chamber and the inclined of described target braking pressure Difference is zero second pressure adjustment signal.

9. air-pressure brake control method as claimed in claim 7 or 8 is it is characterised in that described air-pressure brake control system When at least two barometric brake circuits include the first barometric brake circuit and the second barometric brake circuit, according to described at least two The operating pressure brake chamber corresponding with each barometric brake circuit of the barometric brake circuit corresponding hanging oil cylinder of difference The functional relationship of target braking pressure obtains the target braking pressure of the corresponding brake chamber of each barometric brake circuit, specifically Including:

Respectively according to the described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and the first air pressure system respectively The functional relationship of brake force needed for the corresponding vehicle bridge in dynamic loop and the braking needed for the corresponding vehicle bridge of the second barometric brake circuit The functional relationship of power, the brake force obtaining needed for the corresponding vehicle bridge of the first barometric brake circuit is corresponding with the second barometric brake circuit The brake force needed for vehicle bridge；

Brake force according to needed for the corresponding vehicle bridge of the first barometric brake circuit and the first barometric brake circuit corresponding braking gas The functional relationship of the target braking pressure of room obtains the target braking pressure of the corresponding brake chamber of the first barometric brake circuit；

Brake force according to needed for the corresponding vehicle bridge of the second barometric brake circuit and the second barometric brake circuit corresponding braking gas The functional relationship of the target braking pressure of room obtains the target braking pressure of the corresponding brake chamber of the second barometric brake circuit.

10. air-pressure brake control method as claimed in claim 9 it is characterised in that

The described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and the first barometric brake circuit pair respectively The functional relationship of the brake force needed for the vehicle bridge answered is specially

$f_{u1}=\frac{j^2{h}_g}{g^{2}l}\·(\underset{i=1}{\overset{m}{\σ}}{p}_{i}a+\underset{j=1}{\overset{n}{\σ}}{p}_{j}a+g_1)+\frac{j}{g}\·\frac{\underset{i=1}{\overset{m}{\σ}}{p}_{i}a}{\underset{i=1}{\overset{m}{\σ}}{p}_{i}a+\underset{j=1}{\overset{n}{\σ}}{p}_{j}a}\·(\underset{i=1}{\overset{m}{\σ}}{p}_{i}a+\underset{j=1}{\overset{n}{\σ}}{p}_{j}a+g_1)$

The described at least two barometric brake circuits operating pressure of corresponding hanging oil cylinder and the second barometric brake circuit pair respectively The functional relationship of the brake force needed for the vehicle bridge answered is specially

$f_{u2}=\frac{j}{g}\·\frac{\underset{j=1}{\overset{n}{\σ}}{p}_{j}a}{\underset{i=1}{\overset{m}{\σ}}{p}_{i}a+\underset{j=1}{\overset{n}{\σ}}{p}_{j}a}\·(\underset{i=1}{\overset{m}{\σ}}{p}_{i}a+\underset{j=1}{\overset{n}{\σ}}{p}_{j}a+g_1)-\frac{j^2{h}_g}{g^{2}l}\·(\underset{i=1}{\overset{m}{\σ}}{p}_{i}a+\underset{j=1}{\overset{n}{\σ}}{p}_{j}a+g_1)$

Wherein, f_u1Brake force needed for the corresponding vehicle bridge of the first barometric brake circuit, f_u2Correspond to for the second barometric brake circuit The brake force needed for vehicle bridge, j be set braking deceleration, g be acceleration of gravity, g₁For the unspringing weight of car load, a is The area of oil pressure, p is born in hanging oil cylinder_iFor the operating pressure of the corresponding hanging oil cylinder of the first barometric brake circuit, p_jFor second The operating pressure of the corresponding hanging oil cylinder of barometric brake circuit, i is the quantity of the corresponding hanging oil cylinder of the first barometric brake circuit, J is the quantity of the corresponding hanging oil cylinder of the second barometric brake circuit, and l is wheelbase, h_gHeight of C.G. for car load.

11. air-pressure brake control methods as claimed in claim 9 are it is characterised in that described first pressure adjustment signal is electricity Pressure adjustment signal or current modifying signal；And/or, described second pressure adjustment signal is voltage adjustment signal or electric current adjustment letter Number.

A kind of 12. air-pressure brake control devices control system it is characterised in that being applied to air-pressure brake as claimed in claim 1 In system, comprising:

Receiver module, for receiving the operating pressure of the described at least two barometric brake circuits corresponding hanging oil cylinder of difference；

First control module, for the operating pressure according to the described at least two barometric brake circuits corresponding hanging oil cylinder of difference The functional relationship of the target braking pressure of brake chamber corresponding with each barometric brake circuit, obtains each air-pressure brake The target braking pressure of the corresponding brake chamber in loop；

Second control module, for the target braking pressure according to the corresponding brake chamber of each barometric brake circuit described to Corresponding solenoid-operated proportional pressure regulator valve output first pressure adjustment signal.

13. air-pressure brake control devices as claimed in claim 12 it is characterised in that described Pneumatic braking system each Barometric brake circuit also includes: second pressure detection means, for detect described brake chamber current brake pressure when,

Described receiver module, is additionally operable to receive the current brake pressure of the brake chamber of each described barometric brake circuit；

Described air-pressure brake control device also includes:

3rd control module, for the current brake pressure when described brake chamber with the deviation of described target braking pressure be not When zero, to the output of described brake chamber corresponding solenoid-operated proportional pressure regulator valve make the current brake pressure of described brake chamber with described The deviation of target braking pressure is zero second pressure adjustment signal.

14. air-pressure brake control devices as described in claim 12 or 13 are it is characterised in that described air-pressure brake control system At least two barometric brake circuits when including the first barometric brake circuit and the second barometric brake circuit, described first control mould Block, specifically includes:

First calculating sub module, for the work according to the described at least two barometric brake circuits corresponding hanging oil cylinder of difference respectively Make the functional relationship of brake force needed for pressure vehicle bridge corresponding with the first barometric brake circuit and the second barometric brake circuit pair The functional relationship of the brake force needed for the vehicle bridge answered, obtains the brake force needed for the corresponding vehicle bridge of the first barometric brake circuit and Brake force needed for the corresponding vehicle bridge of two barometric brake circuits；

Second calculating sub module, for the brake force according to needed for the corresponding vehicle bridge of the first barometric brake circuit and the first air pressure system The functional relationship of the target braking pressure of the corresponding brake chamber in dynamic loop obtains the first barometric brake circuit corresponding braking gas The target braking pressure of room；

3rd calculating sub module, for the brake force according to needed for the corresponding vehicle bridge of the second barometric brake circuit and the second air pressure system The functional relationship of the target braking pressure of the corresponding brake chamber in dynamic loop obtains the second barometric brake circuit corresponding braking gas The target braking pressure of room.