CN104163167A - Air brake control system, method and device and wheel type engineering machine - Google Patents

Abstract

The invention relates to the technical field of engineering machines and discloses an air brake control system, method and device and a wheel type engineering machine which are used for improving the safe reliability of the wheel type engineering machine. The system comprises an air reservoir, at least two air brake circuits, a first pressure detecting device and a control device. Each air brake circuit comprises an electromagnetic proportion pressure regulating valve used for regulating brake pressure of a brake air chamber. The first pressure detecting device is used for detecting working pressure of suspension oil cylinders corresponding to the air brake circuits respectively. The control device is in signal connection with the electromagnetic proportion pressure regulating valves and the first pressure detecting device and used for obtaining target brake pressure of the brake air chambers corresponding to the air brake circuits according to the function relationship of the working pressure of the suspension oil cylinders corresponding to the air brake circuits respectively and target brake pressure of the brake air chambers corresponding to the air brake circuits, and outputting first pressure regulating signals to the corresponding electromagnetic proportion pressure regulating valves according to the target brake pressure of the brake air chambers.

Description

Compression air brake control system, method, device and industrial wheeled equipment

Technical field

The present invention relates to technical field of engineering machinery, particularly relate to a kind of compression air brake control system, method, device and industrial wheeled equipment.

Background technology

Adopt the multiaxis industrial wheeled equipment of compression air brake, because existing axle, it carries greatly, during braking, axle load shifts large, and during its road traveling, there is multiple load working condition, in order to make can safe and effectively to brake under industrial wheeled equipment different loads operating mode, while needing to realize braking, braking force can be adjusted so that braking force and different loads operating mode match.

As shown in Figure 1, existing Pneumatic braking system comprises propons brake circuit and back axle brake circuit, each brake circuit comprises: air receiver 1, brake activation valve 2, electromagnetic switch valve 9, pressure-modulation valve 10, relay valve 3 and compressed air brake cylinder 5, when realizing braking under different loads operating mode, by regulating the break-make of electromagnetic switch valve and the pressure size of pressure-modulation valve and then adjusting relay valve, control mouthful air pressure at place, and then regulate the braking pressure size that enters compressed air brake cylinder, realize the different braking power under different loads operating mode.

Yet, present inventor finds, the Pneumatic braking system of prior art can only be realized by the combination of electromagnetic switch valve and pressure-modulation valve the braking force under limited load working condition, range of applicability is less, cannot meet the braking force adjustment under Arbitrary Loads operating mode, still exist braking force to mate with load working condition and cause cannot effective brake, potential safety hazard is still existed.

Summary of the invention

The invention provides a kind of compression air brake control system, method, device and industrial wheeled equipment, in order to improve the deceleration and stopping performance of compression air brake control system, and then the safe reliability of raising industrial wheeled equipment.

Compression air brake control system provided by the invention, comprising:

Air receiver;

At least two barometric brake circuits, comprising: brake activation valve, and at least two barometric brake circuits break-makes simultaneously described in control, described brake activation valve comprises the first admission port and the first air extractor duct, described the first admission port is connected with described air receiver; Each barometric brake circuit wherein, also comprise relay valve, compressed air brake cylinder and solenoid-operated proportional pressure regulating valve, described relay valve comprises the second admission port, the second air extractor duct and controls mouth, described the first air extractor duct is connected with described control mouthful, described the second admission port is connected with described air receiver, described the second air extractor duct is connected with described compressed air brake cylinder, and described solenoid-operated proportional pressure regulating valve is for adjusting the brake-pressure of compressed air brake cylinder;

The first pressure-detecting device, for detection of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference;

Control setup, be connected with the first pressure-detecting device signal with solenoid-operated proportional pressure regulating valve described in each respectively, for according to the functional relation of the target brake-pressure of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference compressed air brake cylinder corresponding with each barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve, export the first pressure and adjust signal.

In technical solution of the present invention, each barometric brake circuit of at least two barometric brake circuits comprises for adjusting the solenoid-operated proportional pressure regulating valve of the brake-pressure of compressed air brake cylinder, and at least two barometric brake circuits that control setup can directly detect according to the first pressure-detecting device in real time respectively operation pressure of corresponding hanging oil cylinder obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve, export the first pressure and adjust signal, thereby the reasonable distribution of the brake-pressure when realizing at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode and braking simultaneously, deceleration and stopping performance is higher, and then improves the safe reliability of industrial wheeled equipment.

Preferably, each barometric brake circuit also comprises: the second pressure-detecting device, for detection of the current brake-pressure of described compressed air brake cylinder;

Described control setup, further be connected with the second pressure-detecting device signal described in each, for when the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure are non-vanishing, to solenoid-operated proportional pressure regulating valve output corresponding to described compressed air brake cylinder, making the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure is the second zero pressure adjustment signal.

At least two barometric brake circuits of the compression air brake control system that the technical program provides adopt closed loop control to regulate the brake-pressure of reasonable distribution while braking simultaneously, further improve control accuracy, thereby further improve the deceleration and stopping performance of compression air brake control system, braking safety is higher, improves the safe reliability of industrial wheeled equipment.

Preferably, described solenoid-operated proportional pressure regulating valve comprises the 3rd admission port and the 3rd air extractor duct, described solenoid-operated proportional pressure regulating valve is serially connected with between described the second admission port and described air receiver, and described the 3rd admission port is connected with described air receiver, and described the 3rd air extractor duct is connected with described the second admission port; Or described solenoid-operated proportional pressure regulating valve is serially connected with between described the first air extractor duct and described control mouth, described the 3rd admission port is connected with described the first air extractor duct, and described the 3rd air extractor duct is connected with described control mouthful.

When the industrial wheeled equipment of considering the compression air brake control system that technique scheme provides need to be braked, the reasonable distribution of brake-pressure when at least two barometric brake circuits according to industrial wheeled equipment under different loads operating mode are braked simultaneously, industrial wheeled equipment is reliably braked, cannot meet industrial wheeled equipment needs braking deceleration when driving, namely cannot meet a little in a flash, the requirement that does not make industrial wheeled equipment brake completely, therefore preferred, this compression air brake control system, also comprises:

The corresponding normally open solenoid valve that solenoid-operated proportional pressure regulating valve arranges described in each, is connected between the 3rd admission port and the 3rd air extractor duct of described solenoid-operated proportional pressure regulating valve;

Electric switch, with described normally open solenoid valve and the electrical connection of described control setup, controls described electric switch and connects when the aperture of described brake activation valve is opened completely.

The compression air brake control system that the technical program provides has met industrial wheeled equipment needs simultaneously and has put the requirement that braking slows down and brakes completely, and applicability is stronger.

Preferably, described brake activation valve is brake pedal valve, and described electric switch is the travel switch that is arranged at the brake pedal full stroke place of described brake pedal valve.

Preferably, described at least two barometric brake circuits comprise the first barometric brake circuit and the second barometric brake circuit.

Preferably, described the first pressure adjustment signal is that voltage adjustment signal or electric current are adjusted signal; And/or it is that voltage adjustment signal or electric current are adjusted signal that described the second pressure is adjusted signal.

Inventive concept based on identical, the present invention also provides a kind of compression air brake control method, is applied to, in compression air brake control system that aforementioned techniques scheme provides, comprising:

At least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively described in reception;

According to the functional relation of the target brake-pressure of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference compressed air brake cylinder corresponding with each barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding;

According to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve, export the first pressure and adjust signal.

The reasonable distribution of the brake-pressure that this control method can realize at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode while braking simultaneously, effectively prevented from occurring the excessive and wheel lockup of braking force or braking force is too small and situation that wheel is not checked occurs in when braking, improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then improves the safe reliability of industrial wheeled equipment.

Inventive concept based on identical, the present invention also provides a kind of compression air brake control setup, is applied to, in compression air brake control system that aforementioned techniques scheme provides, comprising:

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

The first control module, for obtaining the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of described at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively;

The second control module, adjusts signal for exporting the first pressure according to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit to corresponding solenoid-operated proportional pressure regulating valve.

The reasonable distribution of brake-pressure when this control setup can be realized at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode and brakes simultaneously, effectively prevented from occurring the excessive and wheel lockup of braking force or braking force is too small and situation that wheel is not checked occurs in when braking, improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then improves the safe reliability of industrial wheeled equipment.

The present invention also provides a kind of industrial wheeled equipment hoisting crane, comprises the compression air brake control system described in aforementioned arbitrary technical scheme, effectively improves the deceleration and stopping performance of compression air brake control system, and then improves the safe reliability of industrial wheeled equipment.

Accompanying drawing explanation

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

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

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

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

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

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

Fig. 7 is the structural representation of another embodiment of compression air brake control setup of the present invention;

Fig. 8 is the structural representation of compression air brake control setup one embodiment of the present invention.

Reference numeral:

1-air receiver 1a-the first air receiver

1b-the second air receiver 2-brake activation valve

2a-first chamber 2b-the second chamber

21-first admission port 22-the first air extractor duct

3-relay valve 31-the second admission port

32-the second air extractor duct 33-controls mouth

4-solenoid-operated proportional pressure regulating valve 41-the 3rd admission port

42-the 3rd air extractor duct 5-compressed air brake cylinder

6-the first pressure-detecting device 7-control setup

8-the second pressure-detecting device 9-electromagnetic switch valve

10-pressure-modulation valve 11-receiver module

12-first control module 13-the second control module

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

16-electric switch

The specific embodiment

In order to improve the deceleration and stopping performance of compression air brake control system, and then the safe reliability of raising industrial wheeled equipment, the embodiment of the present invention provides a kind of compression air brake control system, method, device and industrial wheeled equipment.In this technical scheme, each barometric brake circuit of at least two barometric brake circuits comprises for adjusting the solenoid-operated proportional pressure regulating valve of the brake-pressure of compressed air brake cylinder, and at least two barometric brake circuits that control setup can directly detect according to the first pressure-detecting device in real time respectively operation pressure of corresponding hanging oil cylinder obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve, export the first pressure and adjust signal, thereby the reasonable distribution of the brake-pressure when realizing at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode and braking simultaneously, deceleration and stopping performance is higher, and then improves the safe reliability of industrial wheeled equipment.

As shown in Figure 2, the compression air brake control system that first embodiment of the invention provides, comprising:

Air receiver 1;

At least two barometric brake circuits, comprising: brake activation valve 2, control at least two barometric brake circuits break-make simultaneously, and brake activation valve 2 comprises that the first admission port 21 and the first air extractor duct 22, the first admission ports 21 are connected with air receiver 1; Each barometric brake circuit wherein, also comprise relay valve 3, compressed air brake cylinder 5 and solenoid-operated proportional pressure regulating valve 4, relay valve 3 comprises the second admission port 31, the second air extractor duct 32 and controls mouth 33, the first air extractor duct 22 is connected with control mouth 33, the second admission port 31 is connected with air receiver 1, the second air extractor duct 32 is connected with compressed air brake cylinder 5, and solenoid-operated proportional pressure regulating valve 4 is for adjusting the brake-pressure of compressed air brake cylinder 5;

The first pressure-detecting device 6, for detection of at least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively;

Control setup 7, be connected with the first pressure-detecting device 6 signals with each solenoid-operated proportional pressure regulating valve 4 respectively, for according to the functional relation of the target brake-pressure of at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve 4 output the first pressure, adjust signal.

When the industrial wheeled equipment of the compression air brake control system that application the present embodiment provides need to be braked, the first pressure-detecting device 6 detects at least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively, obtain industrial wheeled equipment when the different operating mode of different load-carryings at least two barometric brake circuits respectively corresponding hanging oil cylinder operation pressure and detected value is sent to control setup 7; Control setup 7, according to the functional relation of the target brake-pressure of at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively, obtains the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve 4 output the first pressure, adjust signal.

That is to say, compared in prior art rule of thumb regulating brake force to meet different load working conditions, the compression air brake control system that the embodiment of the present invention provides has realized the reasonable distribution of brake-pressure when at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode are braked simultaneously, effectively prevented from occurring the excessive and wheel lockup of braking force or braking force is too small and situation that wheel is not checked occurs in when braking, thereby improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then the safe reliability of raising industrial wheeled equipment,

The compression air brake control system that the present embodiment provides, the distribution of brake-pressure when at least two barometric brake circuits are braked be simultaneously according at least two barometric brake circuits respectively the operation pressure of corresponding hanging oil cylinder specifically distribute, the operation pressure of the hanging oil cylinder that each barometric brake circuit is corresponding can reflect the carload under the different loads operating mode of industrial wheeled equipment more exactly, and the distribution of brake-pressure when at least two barometric brake circuits are braked is simultaneously more accurate;

And, control setup is exported the first pressure and is adjusted the stepless adjustment that signal to solenoid-operated proportional pressure regulating valve can be realized brake-pressure, while making the braking of at least two barometric brake circuits, can more mate the carload under the different loads operating mode of industrial wheeled equipment, Applicable scope is wider, and safety is higher.

Solenoid-operated proportional pressure regulating valve 4 generally includes the 3rd admission port 41 and the 3rd air extractor duct 42, and in the present embodiment, the setting position of solenoid-operated proportional pressure regulating valve has multiple, for example can meet solenoid-operated proportional pressure regulating valve, for adjusting the brake-pressure of compressed air brake cylinder:

Shown in Fig. 2, solenoid-operated proportional pressure regulating valve 4 can be arranged at the second admission port 31 places of relay valve 3, be that solenoid-operated proportional pressure regulating valve is serially connected with between the second admission port 31 and air receiver 1, now, the 3rd admission port 41 of solenoid-operated proportional pressure regulating valve 4 is connected with air receiver 1, the 3rd air extractor duct 42 of solenoid-operated proportional pressure regulating valve 4 is connected with the second admission port 31 of relay valve 3, the gas flow that enters relay valve 3 by control is adjusted the air pressure at the second air extractor duct 32 places of relay valve 3, reaches the target of the brake-pressure of adjusting compressed air brake cylinder 5;

Or, electromagnetic proportional valve can also be arranged at the control mouth place of relay valve, be that solenoid-operated proportional pressure regulating valve is serially connected with between the control mouth of the first air extractor duct and relay valve, now, the 3rd admission port of electromagnetic proportional valve is connected with the first air extractor duct of brake activation valve, the 3rd air extractor duct of electromagnetic proportional valve is connected with the control mouth of relay valve, adjusts the air pressure in the exit of relay valve by controlling the opening degree of relay valve, reaches the target of the brake-pressure of adjusting compressed air brake cylinder;

Certainly, electromagnetic proportional valve can also be arranged at the second air extractor duct place of relay valve, now, the 3rd admission port of electromagnetic proportional valve is connected with the second air extractor duct of relay valve, the 3rd air extractor duct of electromagnetic proportional valve is connected with compressed air brake cylinder, directly adjust the pressure of the gas that enters compressed air brake cylinder, reach the target of the brake-pressure of adjusting compressed air brake cylinder.

As shown in Figure 3, the present invention also provides the second embodiment, and on the basis of the first embodiment, each barometric brake circuit of compression air brake control system also comprises: the second pressure-detecting device 8, for detection of the current brake-pressure of compressed air brake cylinder 5;

Control setup 7, further be connected with each second pressure-detecting device 8 signal, for when the current brake-pressure of compressed air brake cylinder and the deviation of its target brake-pressure are non-vanishing, to solenoid-operated proportional pressure regulating valve output corresponding to this compressed air brake cylinder, making the current brake-pressure of this compressed air brake cylinder and the deviation of its target brake-pressure is the second zero pressure adjustment signal.

The compression air brake control system that the present embodiment provides, control setup 7 is exported after the first pressure adjusts signal to corresponding solenoid-operated proportional pressure regulating valve according to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit, the second pressure-detecting device 8 detects in real time the current brake-pressure of compressed air brake cylinder and exports this detected value to control setup 7, control setup 7 compares the current brake-pressure of compressed air brake cylinder and its target brake-pressure, when the current brake-pressure of this compressed air brake cylinder and the deviation of its target brake-pressure are when non-vanishing, control setup 7 is adjusted signal to solenoid-operated proportional pressure regulating valve 4 output the second pressure corresponding to this compressed air brake cylinder, so that the current brake-pressure of this compressed air brake cylinder and the deviation of its target brake-pressure are zero, that is to say, at least two barometric brake circuits of the compression air brake control system that the present embodiment provides adopt closed loop control to regulate the brake-pressure of reasonable distribution while braking simultaneously, further improve control accuracy, thereby further improve the deceleration and stopping performance of compression air brake control system, braking safety is higher, improve the safe reliability of industrial wheeled equipment.

When the industrial wheeled equipment of the compression air brake control system that employing above-described embodiment provides need to be braked, the reasonable distribution of brake-pressure when at least two barometric brake circuits according to industrial wheeled equipment under different loads operating mode are braked simultaneously, industrial wheeled equipment is reliably braked, cannot meet industrial wheeled equipment needs braking deceleration when driving, namely cannot meet a little in a flash, the requirement that does not make industrial wheeled equipment brake completely, therefore, shown in Fig. 4, third embodiment of the invention further provides a kind of compression air brake control system, on the basis of above-described embodiment, also comprise:

The normally open solenoid valve 15 that corresponding each solenoid-operated proportional pressure regulating valve 4 arranges, is connected between the 3rd admission port 41 and the 3rd air extractor duct 42 of solenoid-operated proportional pressure regulating valve 4;

Electric switch 16, with normally open solenoid valve and control setup electrical connection, controls electric switch 16 and connects when the aperture of brake activation valve 2 is opened completely.

In the present embodiment, electric switch and normally open solenoid valve and control setup electrical connection, when electric switch is connected, normally open solenoid valve obtains electric, and control setup starts; When electric switch disconnects, normally open solenoid valve dead electricity, control setup is closed.Normally open solenoid valve 15 is connected between the 3rd admission port 41 and the 3rd air extractor duct 42, that is to say the pipeline between the 3rd admission port 41 and the 3rd air extractor duct 42 with a normal open.The aperture of brake activation valve is opened completely needs industrial wheeled equipment to brake completely, and the aperture of brake activation valve is not opened completely, namely stops, and now electric switch disconnects.

The compression air brake control system that the present embodiment provides, when point brake needs braking deceleration, the aperture of brake activation valve is not opened completely, electric switch disconnects, normally open solenoid valve 15 dead electricity now, normally open solenoid valve 15 is in conducting state, and control setup 7 is closed, the gas of air receiver directly enters relay valve and then enters compressed air brake cylinder through normally open solenoid valve 15 from air receiver, and then realizes the deceleration of some braking;

In the time of need to braking completely, the aperture of brake activation valve 2 is opened completely, electric switch is connected, now normally open solenoid valve 15 obtains electric, normally open solenoid valve 15 is in off-state, and control setup 7 starts, now, the gas of air receiver cannot directly enter relay valve through normally open solenoid valve 15 from air receiver, the brake-pressure of compression air brake control system when at least two barometric brake circuits under different loads operating mode are braked simultaneously according to industrial wheeled equipment carries out reasonable distribution, and industrial wheeled equipment is reliably braked.Therefore, the compression air brake control system that the present embodiment provides has met industrial wheeled equipment needs simultaneously and has put the requirement that braking slows down and brakes completely, and applicability is stronger.

The kind of brake activation valve has multiple, and when brake activation valve adopts brake pedal valve, electric switch can be for being arranged at the travel switch at the brake pedal full stroke place of brake pedal valve.When jamming on brake pedal valve and make brake pedal move to full stroke place, the connection that is triggered of the switch contact of travel switch, when brake pedal does not move to full stroke place, the connection that is not triggered of the switch contact of travel switch.

It should be noted that, in various embodiments of the present invention, the first pressure adjustment signal can be that voltage adjustment signal or electric current are adjusted signal; It can be voltage adjustment signal or electric current adjustment signal equally that the second pressure is adjusted signal; The compression air brake control system that various embodiments of the present invention provide comprises at least two barometric brake circuits, and the concrete quantity of barometric brake circuit does not limit, and specifically according to the axletree number of industrial wheeled equipment and brake request, determines; In various embodiments of the present invention, the first admission port, the second admission port, the 3rd admission port, the first air extractor duct, the second air extractor duct, the 3rd air extractor duct, only for distinguishing admission port and the air extractor duct on different valve bodies, are not for distinguishing the quantity of the enterprising gas port of valve body and air extractor duct.

The first pressure-detecting device and the second pressure-detecting device can be pressure sensor; The particular type of control setup is not limit, for example, can be Programmable Logic Controller, or vehicle-mounted CPU (Central Processing Unit, central process unit are called for short CPU) etc.

With compression air brake control system, comprise two barometric brake circuits below, to be respectively the first barometric brake circuit and the second barometric brake circuit be example and be described with reference to the accompanying drawings the present invention, wherein, the first barometric brake circuit is for propons braking, and the second barometric brake circuit is for back axle braking.

Compression air brake control system the 4th embodiment as shown in Figure 4 comprises:

The first air receiver 1a, the second air receiver 1b;

Two barometric brake circuits: brake activation valve 2, control two barometric brake circuits break-make simultaneously, brake activation valve 2 comprises the first chamber 2a and the second chamber 2b, the first chamber 2a of brake activation valve 2 is connected with the first air receiver 1a, the second chamber 2b is connected with the second air receiver 1b, and the first chamber 2a and the second chamber 2b are connected in the first barometric brake circuit and the second barometric brake circuit;

The first barometric brake circuit also comprises: relay valve 3, two compressed air brake cylinders 5, normally open solenoid valve 15 and solenoid-operated proportional pressure regulating valves 4, the first chamber 2a of brake activation valve 2 is connected with the control mouth 33 of relay valve 3, the 3rd admission port 41 of solenoid-operated proportional pressure regulating valve 4 is connected with the first air receiver 1a, the 3rd air extractor duct 42 of solenoid-operated proportional pressure regulating valve 4 is connected with the second admission port 31 of relay valve 3, the second air extractor duct 32 of relay valve 3 is connected with two compressed air brake cylinders 5, and normally open solenoid valve 15 is connected between the 3rd admission port 41 and the 3rd air extractor duct 42 of solenoid-operated proportional pressure regulating valve 4;

The second barometric brake circuit also comprises: relay valve 3, two compressed air brake cylinders 5, normally open solenoid valve 15 and solenoid-operated proportional pressure regulating valves 4, the second chamber 2b of brake activation valve 2 is connected with the control mouth 33 of relay valve 3, the 3rd admission port 41 of solenoid-operated proportional pressure regulating valve 4 is connected with the second air receiver 1b, the 3rd air extractor duct 42 of solenoid-operated proportional pressure regulating valve 4 is connected with the second admission port 31 of relay valve 3, the second air extractor duct 32 of relay valve 3 is connected with two compressed air brake cylinders 5, and normally open solenoid valve 15 is connected between the 3rd admission port 41 and the 3rd air extractor duct 42 of solenoid-operated proportional pressure regulating valve 4;

The first pressure-detecting device 6, for detection of the operation pressure of propons hanging oil cylinder and the operation pressure of Rear-axle suspension oil cylinder;

Two the second pressure-detecting devices 8, are respectively used to detect the current brake-pressure of the compressed air brake cylinder of two barometric brake circuits, second air extractor duct 32 places that are arranged at relay valve 3 of the second pressure-detecting device 8;

Control setup 7, be connected with two solenoid-operated proportional pressure regulating valves 4, the first pressure-detecting device 6 and two the second pressure-detecting device 8 signals respectively, according to the functional relation of the target brake-pressure of the operation pressure of the operation pressure of propons hanging oil cylinder and the Rear-axle suspension oil cylinder compressed air brake cylinder corresponding with each barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit obtaining, to corresponding solenoid-operated proportional pressure regulating valve 4 output the first pressure, adjust signal; When the current brake-pressure of compressed air brake cylinder and the deviation of its target brake-pressure are when non-vanishing, to solenoid-operated proportional pressure regulating valve 4 outputs of these compressed air brake cylinder 5 correspondences, making the current brake-pressure of this compressed air brake cylinder 5 and the deviation of its target brake-pressure is the second pressure adjustment signal of zero;

And electric switch 16, with normally open solenoid valve 15 and control setup 7 electrical connections, when the aperture of brake activation valve 2 is opened completely, electric switch is connected, wherein, brake activation valve 2 is brake pedal valve, and electric switch 16 is for being arranged at the travel switch at the brake pedal full stroke place of brake pedal valve.

In the present embodiment, control setup obtains the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of the operation pressure of the operation pressure of propons hanging oil cylinder and the Rear-axle suspension oil cylinder compressed air brake cylinder corresponding with each barometric brake circuit, specifically comprises:

The functional relation of the braking force that the functional relation of the required braking force of the vehicle bridge corresponding with the first barometric brake circuit according to the operation pressure of the operation pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder (namely propons) and the second barometric brake circuit are corresponding respectively vehicle bridge (namely back axle) is required, obtains the required braking force of vehicle bridge (namely back axle) that the required braking force of the vehicle bridge that the first barometric brake circuit is corresponding (namely propons) and the second barometric brake circuit are corresponding;

The functional relation of the target brake-pressure of the compressed air brake cylinder that the braking force that the vehicle bridge corresponding according to the first barometric brake circuit (namely propons) is required and the first barometric brake circuit are corresponding obtains the target brake-pressure of the compressed air brake cylinder that the first barometric brake circuit is corresponding;

The functional relation of the target brake-pressure of the compressed air brake cylinder that the braking force that the vehicle bridge corresponding according to the second barometric brake circuit (namely back axle) is required and the second barometric brake circuit are corresponding obtains the target brake-pressure of the compressed air brake cylinder that the second barometric brake circuit is corresponding.

In the present embodiment, the functional relation of the braking force that the functional relation of the required braking force of the vehicle bridge corresponding with the first barometric brake circuit according to the operation pressure of the operation pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder (namely propons) and the second barometric brake circuit are corresponding respectively vehicle bridge (namely back axle) is required, the method that obtains the required braking force of vehicle bridge (namely back axle) that the required braking force of the vehicle bridge that the first barometric brake circuit is corresponding (namely propons) and the second barometric brake circuit are corresponding has multiple, for example, can specifically comprise:

According to the operation pressure p of propons hanging oil cylinder _ioperation pressure p with Rear-axle suspension oil cylinder _jobtain complete vehicle weight G with the functional relation of complete vehicle weight G,

The operation pressure p of propons hanging oil cylinder _ioperation pressure p with Rear-axle suspension oil cylinder _jwith the functional relation of complete vehicle weight G 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 hanging oil cylinder that the first barometric brake circuit is corresponding, and j is the quantity of the hanging oil cylinder that the second barometric brake circuit is corresponding, be the vehicle bridge spring load carrying ability that the first barometric brake circuit is corresponding (namely propons spring load carrying ability), be the vehicle bridge spring load carrying ability that the second barometric brake circuit is corresponding (namely back axle spring load carrying ability), G ₁for the unspringing weight of car load, A bears the area of oil pressure, i, j, G in hanging oil cylinder ₁specifically according to the vehicle of industrial wheeled equipment, determine with A;

According to the braking force F of complete vehicle weight G and car load _ufunctional relation obtain the braking force F of car load _u,

The braking force F of complete vehicle weight G and car load _ufunctional relation can be

$F_u=\frac{J}{g}G---\left(2\right)$

The braking deceleration of J for setting, the value of braking deceleration J is not specifically limited at this, can determine according to the vehicle of industrial wheeled equipment and national Specification;

According to the functional relation of the position of the operation pressure of the operation pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder and car load center of gravity, obtain the position of car load center of gravity,

The functional relation of the position of the operation pressure of the operation pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder and car load center of gravity 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 between the line of centers of the car load center of gravity axletree corresponding with the first barometric brake circuit (being front axle) all axletrees of industrial wheeled equipment distance in the plane, L _jfor between the line of centers of the car load center of gravity axletree corresponding with the second barometric brake circuit (being rear axle) all axletrees of industrial wheeled equipment distance in the plane, and there is relational expression L _j=L-L _i(4);

The braking force F required according to propons _u1, the required braking force F of back axle _u2, and with the functional relation of complete vehicle weight G, obtain the required braking force of propons and the required braking force of back axle,

The braking force F that propons is required _u1, the required braking force F of back axle _u2, and do not limit with the functional relation of complete vehicle weight G, can be for example the ideal Distribution computing formula (desirable brakig force distribution I curve) of vehicle front-rear axle braking 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 _gheight of gravitational center for car load, is not specifically limited at this, and because car load adopts hydro-pneumatic suspension system, under different load working conditions, height of gravitational center changes littlely, specifically can determine according to the vehicle of industrial wheeled equipment and experience;

Thereby the functional relation that draws the operation pressure of propons hanging oil cylinder and the required braking force of the operation pressure of the Rear-axle suspension oil cylinder vehicle bridge (namely propons) corresponding with the first barometric brake circuit according to above-mentioned functional relation (1) (2) (3) (4) and (5) 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 functional relation of the braking force that the vehicle bridge that the operation pressure of the operation pressure of propons hanging oil cylinder and Rear-axle suspension oil cylinder is corresponding with the second barometric brake circuit (namely back axle) is required is

$F_{u2}=\frac{J}{g}\·\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{p}_{i}A}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)-\frac{J^2{h}_g}{g^{2}L}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1).$

In various embodiments of the present invention, the braking force F that the target brake-pressure P1 of the compressed air brake cylinder of the first brake circuit and propons are required _u1functional relation, and the target brake-pressure P2 of the compressed air brake cylinder of the second brake circuit and the required braking force F of back axle _u2functional relation at this, be not specifically limited, the drg specifically adopting according to industrial wheeled equipment is determined, such as drg, is plate disc brake or drum brake mechanism etc.

The Pneumatic braking system working process that the present embodiment provides is specially:

When point brake needs braking deceleration, the brake pedal of brake pedal valve does not move to full stroke place, the connection that is not triggered of the switch contact of travel switch, control setup is closed, and normally open solenoid valve 15 dead electricity, normally open solenoid valve 15 conductings, the 3rd admission port 41 of solenoid-operated proportional pressure regulating valve 4 and the pipeline between the 3rd air extractor duct 42 are in connected state, the gas of the first air receiver 1a of the first barometric brake circuit directly enters relay valve 3 and then enters compressed air brake cylinder 5 through normally open solenoid valve 15, the gas of the second air receiver 1b of the second barometric brake circuit directly enters relay valve 3 and then enters compressed air brake cylinder 5 through normally open solenoid valve 15 simultaneously, and then realization point braking slows down,

In the time of need to braking completely, jam on brake activation valve 2, the brake pedal of brake pedal valve moves to full stroke place, the connection that is triggered of the switch contact of travel switch, control setup starts, and normally open solenoid valve 15 obtains electric, normally open solenoid valve 15 disconnects, and the first pressure-detecting device 6 detects the operation pressure p of propons hanging oil cylinder in real time _ioperation pressure p with Rear-axle suspension oil cylinder _j, and by detected value p _i, p _jbe sent to control setup 7;

Control setup 7 is according to detected value p _i, p _jcalculate the target brake-pressure P1 of the compressed air brake cylinder 5 of the first brake circuit, the target brake-pressure P2 of the compressed air brake cylinder 5 of the second brake circuit; Control setup 7 is adjusted signal to corresponding solenoid-operated proportional pressure regulating valve 4 output the first pressure respectively according to target brake-pressure P1, P2, thereby the air pressure at the air extractor duct place of the relay valve 3 of two barometric brake circuits of adjustment, the brake-pressure that makes the compressed air brake cylinder 5 of the first brake circuit is that the brake-pressure of the compressed air brake cylinder 5 of P1, the second brake circuit is P2;

While two the second pressure-detecting devices 8, detect respectively the current brake-pressure P1' of the compressed air brake cylinder 5 of the first barometric brake circuit, the current brake-pressure P2' of the compressed air brake cylinder 5 of the second barometric brake circuit, and by detected value P1', P2' is sent to control setup 7, when the deviation of P1' and P1 is non-vanishing, to solenoid-operated proportional pressure regulating valve 4 output the second pressure that this compressed air brake cylinder is corresponding, adjust signal, making deviation is zero, when the deviation of P2' and P2 is non-vanishing, to solenoid-operated proportional pressure regulating valve 4 output the second pressure that this compressed air brake cylinder is corresponding, adjust signal, making deviation is zero, the compressed air brake cylinder of final the first brake circuit can be with target brake-pressure P1 brake front axle, the compressed air brake cylinder of the first brake circuit can be with target brake-pressure P2 braking back axle, thereby realize the reliable braking of industrial wheeled equipment.

From above-mentioned working process, the compression air brake control system that the present embodiment provides can be according to the different operating modes of industrial wheeled equipment reasonable distribution brake front axle and the braking force of braking back axle when braking, obtaining industrial wheeled equipment reliably brakes, improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then improves the safe reliability of industrial wheeled equipment; And can realize a braking and slow down, applicability is stronger.

Inventive concept based on identical, as shown in Figure 5, fifth embodiment of the invention also provides a kind of compression air brake control method that is applied to the compression air brake control system that aforementioned arbitrary embodiment provides, and comprising:

Step 501: receive at least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively;

Step 502: the target brake-pressure that obtains the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively;

Step 503: export the first pressure according to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit to corresponding solenoid-operated proportional pressure regulating valve and adjust signal.

The reasonable distribution of the brake-pressure that the control method that the present embodiment provides can realize at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode while braking simultaneously, effectively prevented from occurring the excessive and wheel lockup of braking force or braking force is too small and situation that wheel is not checked occurs in when braking, improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then improves the safe reliability of industrial wheeled equipment.

When each barometric brake circuit of Pneumatic braking system also comprises: the second pressure-detecting device, during for detection of the current brake-pressure of compressed air brake cylinder, as shown in Figure 6, as control method one preferred embodiment of the present invention, specifically comprises:

Step 601: receive at least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively;

Step 602: the target brake-pressure that obtains the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively;

Step 603: export the first pressure according to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit to corresponding solenoid-operated proportional pressure regulating valve and adjust signal;

Step 604: the current brake-pressure that receives the compressed air brake cylinder of each barometric brake circuit;

Step 605: judge whether the current brake-pressure of compressed air brake cylinder and the deviation of its target brake-pressure are zero, if so, execution step 606, otherwise, return to step 604;

Step 606: making the current brake-pressure of this compressed air brake cylinder and the deviation of its target brake-pressure to solenoid-operated proportional pressure regulating valve output corresponding to compressed air brake cylinder is that the second zero pressure is adjusted signal.

When at least two barometric brake circuits of compression air brake control system comprise the first barometric brake circuit and the second barometric brake circuit, a preferred embodiment as control method of the present invention, the target brake-pressure that obtains the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively, specifically comprises:

According to the functional relation of the functional relation of the required braking force of described at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the first barometric brake circuit respectively and the required braking force of vehicle bridge corresponding to the second barometric brake circuit, obtain required braking force and the required braking force of vehicle bridge corresponding to the second barometric brake circuit of vehicle bridge that the first barometric brake circuit is corresponding respectively;

According to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the first barometric brake circuit and compressed air brake cylinder corresponding to the first barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that the first barometric brake circuit is corresponding;

According to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the second barometric brake circuit and compressed air brake cylinder corresponding to the second barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that the second barometric brake circuit is corresponding.

Further, the functional relation of the required braking force of at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the first barometric brake circuit is respectively specially

$F_{u1}=\frac{J^2{h}_g}{g^{2}L}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)+\frac{J}{g}\·\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)$

The functional relation of the braking force that at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the second barometric brake circuit is respectively required 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 embodiment is the same, and it is no longer repeated here.

Inventive concept based on identical, as shown in Figure 7, fifth embodiment of the invention also provides a kind of compression air brake control setup that is applied to the compression air brake control system that aforementioned arbitrary embodiment provides, and comprising:

Receiver module 11, for receiving at least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively;

The first control module 12, for obtaining the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively;

The second control module 13, adjusts signal for exporting the first pressure according to the target brake-pressure of compressed air brake cylinder corresponding to each barometric brake circuit to corresponding solenoid-operated proportional pressure regulating valve.

The reasonable distribution of the brake-pressure when control setup that the embodiment of the present invention provides can be realized at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode and brakes simultaneously, effectively prevented from occurring the excessive and wheel lockup of braking force or braking force is too small and situation that wheel is not checked occurs in when braking, improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then improves the safe reliability of industrial wheeled equipment.

When each barometric brake circuit of Pneumatic braking system also comprises: the second pressure-detecting device, during for detection of the current brake-pressure of compressed air brake cylinder, as shown in Figure 8, as a preferred embodiment of control setup of the present invention,

Receiver module 11, also for receiving the current brake-pressure of the compressed air brake cylinder of each barometric brake circuit; This control setup also comprises:

The 3rd control module 14, for when the current brake-pressure of compressed air brake cylinder and the deviation of target brake-pressure are non-vanishing, to solenoid-operated proportional pressure regulating valve output corresponding to compressed air brake cylinder, making the current brake-pressure of compressed air brake cylinder and the deviation of target brake-pressure is the second zero pressure adjustment signal.

When at least two barometric brake circuits of compression air brake control system comprise the first barometric brake circuit and the second barometric brake circuit, as a preferred embodiment of control setup of the present invention, the first control module 12, specifically comprises:

The first calculating sub module, for respectively, according to the functional relation of the functional relation of the required braking force of at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the first barometric brake circuit respectively and the required braking force of vehicle bridge corresponding to the second barometric brake circuit, obtain required braking force and the required braking force of vehicle bridge corresponding to the second barometric brake circuit of vehicle bridge that the first barometric brake circuit is corresponding;

The second calculating sub module, for obtaining the target brake-pressure of the compressed air brake cylinder that the first barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the first barometric brake circuit and compressed air brake cylinder corresponding to the first barometric brake circuit;

The 3rd calculating sub module, for obtaining the target brake-pressure of the compressed air brake cylinder that the second barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the second barometric brake circuit and compressed air brake cylinder corresponding to the second barometric brake circuit.

The beneficial effect of above embodiment is the same, and it is no longer repeated here.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If integrated module usings that the form of software function module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium.

The embodiment of the present invention also provides a kind of industrial wheeled equipment, the compression air brake control system that comprises aforementioned arbitrary embodiment, the reasonable distribution of the brake-pressure while having realized due to this compression air brake control system that at least two barometric brake circuits of industrial wheeled equipment under different loads operating mode are braked simultaneously, effectively prevented from occurring the excessive and wheel lockup of braking force or braking force is too small and situation that wheel is not checked occurs in when braking, improved the deceleration and stopping performance of compression air brake control system, braking safety is higher, and then the safe reliability of raising industrial wheeled equipment, the braking safety of industrial wheeled equipment therefore with this compression air brake control system is higher, its safe reliability is also higher.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (16)

1. a compression air brake control system, is characterized in that, comprising:

Air receiver;

At least two barometric brake circuits, comprising: the brake activation valve of at least two barometric brake circuit while break-makes described in control, and described brake activation valve comprises the first admission port and the first air extractor duct, described the first admission port is connected with described air receiver; Wherein, each barometric brake circuit, also comprise relay valve, compressed air brake cylinder and solenoid-operated proportional pressure regulating valve, described relay valve comprises the second admission port, the second air extractor duct and controls mouth, described the first air extractor duct is connected with described control mouthful, described the second admission port is connected with described air receiver, and described the second air extractor duct is connected with described compressed air brake cylinder, and described solenoid-operated proportional pressure regulating valve is for adjusting the brake-pressure of compressed air brake cylinder;

The first pressure-detecting device, for detection of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference;

Control setup, be connected with the first pressure-detecting device signal with solenoid-operated proportional pressure regulating valve described in each respectively, for according to the functional relation of the target brake-pressure of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference compressed air brake cylinder corresponding with each barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding; According to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve, export the first pressure and adjust signal.

2. compression air brake control system as claimed in claim 1, is characterized in that, each barometric brake circuit also comprises: the second pressure-detecting device, for detection of the current brake-pressure of described compressed air brake cylinder;

Described control setup, further be connected with the second pressure-detecting device signal described in each, for when the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure are non-vanishing, to solenoid-operated proportional pressure regulating valve output corresponding to described compressed air brake cylinder, making the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure is the second zero pressure adjustment signal.

3. compression air brake control system as claimed in claim 1, it is characterized in that, described solenoid-operated proportional pressure regulating valve comprises the 3rd admission port and the 3rd air extractor duct, described solenoid-operated proportional pressure regulating valve is serially connected with between described the second admission port and described air receiver, described the 3rd admission port is connected with described air receiver, and described the 3rd air extractor duct is connected with described the second admission port; Or described solenoid-operated proportional pressure regulating valve is serially connected with between described the first air extractor duct and described control mouth, described the 3rd admission port is connected with described the first air extractor duct, and described the 3rd air extractor duct is connected with described control mouthful.

4. compression air brake control system as claimed in claim 3, is characterized in that, also comprises:

The corresponding normally open solenoid valve that solenoid-operated proportional pressure regulating valve arranges described in each, is connected between the 3rd admission port and the 3rd air extractor duct of described solenoid-operated proportional pressure regulating valve;

Electric switch, with described normally open solenoid valve and the electrical connection of described control setup, controls described electric switch and connects when the aperture of described brake activation valve is opened completely.

5. compression air brake control system as claimed in claim 4, is characterized in that, described brake activation valve is brake pedal valve, and described electric switch is the travel switch that is arranged at the brake pedal full stroke place of described brake pedal valve.

6. the compression air brake control system as described in as arbitrary in claim 1～5, is characterized in that, described at least two barometric brake circuits comprise the first barometric brake circuit and the second barometric brake circuit.

7. compression air brake control system as claimed in claim 6, is characterized in that, it is that voltage adjustment signal or electric current are adjusted signal that described the first pressure is adjusted signal; And/or it is that voltage adjustment signal or electric current are adjusted signal that described the second pressure is adjusted signal.

8. an industrial wheeled equipment, is characterized in that, comprises the compression air brake control system as described in claim 1～7 any one.

9. a compression air brake control method for hoisting crane, is characterized in that, is applied to, in compression air brake control system as claimed in claim 1, comprising:

At least two barometric brake circuits operation pressure of corresponding hanging oil cylinder respectively described in reception;

According to the functional relation of the target brake-pressure of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference compressed air brake cylinder corresponding with each barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding;

According to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit, to corresponding solenoid-operated proportional pressure regulating valve, export the first pressure and adjust signal.

10. compression air brake control method as claimed in claim 9, is characterized in that, each barometric brake circuit of described Pneumatic braking system also comprises: the second pressure-detecting device, and during for detection of the current brake-pressure of described compressed air brake cylinder,

Described compression air brake control method also comprises:

Receive the current brake-pressure of the compressed air brake cylinder of barometric brake circuit described in each;

When the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure are when non-vanishing, to solenoid-operated proportional pressure regulating valve output corresponding to described compressed air brake cylinder, making the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure is the second pressure adjustment signal of zero.

11. compression air brake control methods as described in claim 9 or 10, it is characterized in that, when at least two barometric brake circuits of described compression air brake control system comprise the first barometric brake circuit and the second barometric brake circuit, the target brake-pressure that obtains the compressed air brake cylinder that each barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of described at least two barometric brake circuits compressed air brake cylinder that the operation pressure of corresponding hanging oil cylinder is corresponding with each barometric brake circuit respectively, specifically comprises:

According to the functional relation of the functional relation of the required braking force of described at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the first barometric brake circuit respectively and the required braking force of vehicle bridge corresponding to the second barometric brake circuit, obtain required braking force and the required braking force of vehicle bridge corresponding to the second barometric brake circuit of vehicle bridge that the first barometric brake circuit is corresponding respectively;

According to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the first barometric brake circuit and compressed air brake cylinder corresponding to the first barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that the first barometric brake circuit is corresponding;

According to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the second barometric brake circuit and compressed air brake cylinder corresponding to the second barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that the second barometric brake circuit is corresponding.

12. compression air brake control methods as claimed in claim 11, is characterized in that,

The functional relation of the braking force that described at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the first barometric brake circuit is respectively required is specially

$F_{u1}=\frac{J^2{h}_g}{g^{2}L}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)+\frac{J}{g}\·\frac{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)$

The functional relation of the braking force that described at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the second barometric brake circuit is respectively required is specially

$F_{u2}=\frac{J}{g}\·\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{p}_{i}A}{\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)-\frac{J^2{h}_g}{g^{2}L}\·(\underset{i=1}{\overset{m}{\mathrm{\Σ}}}{p}_{i}A+\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{p}_{j}A+G_1)$

Wherein, F _u1be the required braking force of vehicle bridge that the first barometric brake circuit is corresponding, F _u2be the required braking force of vehicle bridge that the second barometric brake circuit is corresponding, the braking deceleration of J for setting, g is acceleration due to gravity, G ₁for the unspringing weight of car load, A bears the area of oil pressure, p in hanging oil cylinder _ibe the operation pressure of the hanging oil cylinder that the first barometric brake circuit is corresponding, p _jbe the operation pressure of the hanging oil cylinder that the second barometric brake circuit is corresponding, i is the quantity of the hanging oil cylinder that the first barometric brake circuit is corresponding, and j is the quantity of the hanging oil cylinder that the second barometric brake circuit is corresponding, and L is wheelbase, h _gheight of gravitational center for car load.

13. compression air brake control methods as claimed in claim 11, is characterized in that, it is that voltage adjustment signal or electric current are adjusted signal that described the first pressure is adjusted signal; And/or it is that voltage adjustment signal or electric current are adjusted signal that described the second pressure is adjusted signal.

14. 1 kinds of compression air brake control setups, is characterized in that, are applied to, in compression air brake control system as claimed in claim 1, comprising:

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

The first control module, for according to the functional relation of the target brake-pressure of the operation pressure of hanging oil cylinder corresponding to described at least two barometric brake circuits difference compressed air brake cylinder corresponding with each barometric brake circuit, obtain the target brake-pressure of the compressed air brake cylinder that each barometric brake circuit is corresponding;

The second control module, adjusts signal for exporting the first pressure according to the target brake-pressure of compressed air brake cylinder corresponding to described each barometric brake circuit to corresponding solenoid-operated proportional pressure regulating valve.

15. compression air brake control setups as claimed in claim 14, is characterized in that, each barometric brake circuit of described Pneumatic braking system also comprises: the second pressure-detecting device, and during for detection of the current brake-pressure of described compressed air brake cylinder,

Described receiver module, also for receiving the current brake-pressure of the compressed air brake cylinder of barometric brake circuit described in each;

Described compression air brake control setup also comprises:

The 3rd control module, for when the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure are non-vanishing, to solenoid-operated proportional pressure regulating valve output corresponding to described compressed air brake cylinder, making the current brake-pressure of described compressed air brake cylinder and the deviation of described target brake-pressure is the second zero pressure adjustment signal.

16. compression air brake control setups as described in claims 14 or 15, it is characterized in that, when at least two barometric brake circuits of described compression air brake control system comprise the first barometric brake circuit and the second barometric brake circuit, described the first control module, specifically comprises:

The first calculating sub module, for respectively, according to the functional relation of the functional relation of the required braking force of described at least two barometric brake circuits vehicle bridge that the operation pressure of corresponding hanging oil cylinder is corresponding with the first barometric brake circuit respectively and the required braking force of vehicle bridge corresponding to the second barometric brake circuit, obtain required braking force and the required braking force of vehicle bridge corresponding to the second barometric brake circuit of vehicle bridge that the first barometric brake circuit is corresponding;

The second calculating sub module, for obtaining the target brake-pressure of the compressed air brake cylinder that the first barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the first barometric brake circuit and compressed air brake cylinder corresponding to the first barometric brake circuit;

The 3rd calculating sub module, for obtaining the target brake-pressure of the compressed air brake cylinder that the second barometric brake circuit is corresponding according to the functional relation of the target brake-pressure of the required braking force of vehicle bridge corresponding to the second barometric brake circuit and compressed air brake cylinder corresponding to the second barometric brake circuit.