CN105181355B - Tractor-trailer combinatios air braking system multipurpose test system - Google Patents

Abstract

Tractor-trailer combinatios air braking system multipurpose test system, including：It is tested air compressor and subject air accumulator test device, subject air brake valve dynamic characteristic cylinder drive system, subject air brake valve drive device, subject air brake valve static characteristic hydraulic cylinders drive system, subject air brake valve venting test device, subject brake chamber drive system, subject brake chamber loading system；Above-mentioned each apparatus and system is laid out constituted Tractor-trailer combinatios air braking system multipurpose test system by science, compact conformation, multiple functional, good combination property, measuring accuracy are high, automaticity is high, both performance, reliability and durability test can be carried out to Tractor-trailer combinatios air braking system, performance, reliability and durability test can also be carried out to single product air compressor, air accumulator, air brake valve, brake chamber simultaneously, integrated level is high, easy for installation and safe and reliable.

Description

Tractor-trailer combinatios air braking system multipurpose test system

Technical field

The invention belongs to tractor field, it is related to a kind of air braking system multipurpose test system, more particularly to one kind is dragged Machine drawing transport unit air braking system multipurpose test system.

Background technology

At present, the Tractor-trailer combinatios straight air brake system Guided Missiles Service Test Set produced both at home and abroad, is mostly manual operating Lever machine Structure or pin actuating linkage mechanism drive control element, make the air brake valve output high-pressure gas of control element, reach straight air brake system The dynamic purpose of controlling.Test operation personnel labor intensity in braking is big, easily fatigue；The present inventor is in Shen on May 3rd, 2013 " Air brake valve for trailer of tractor Performance Test System 201310159662.9 " and utility model patent " are dragged patent of invention please Machine drawing trailer air brake valve Performance Test System 201320234562.3 " uses an air brake valve and carries out testing close respectively Feng Xing, static characteristic and dynamic characteristic method, it is as follows that it is not enough：The gas that can only test in Tractor-trailer combinatios air braking system Brake valve assembly single product；Air compressor, air accumulator, brake chamber and Tractor-trailer combinatios straight air brake system can not be tested System；, it is necessary to will be by test specimen air brake valve assembly from seal tightness test stand after test completes the seal tightness test of air brake valve On remove, then be installed on Bench of Static frame.Test complete air brake valve static characteristic experiment after, need also exist for by Removed by test specimen air brake valve assembly from Bench of Static frame, then be installed to the enterprising action characteristic of dynamic response test stand Experiment.So when reinstalling every time, it is necessary to reposition and adjust benchmark, it is difficult to ensure that unifying datum, generating need not The artificial alignment error wanted, influences measuring accuracy, adds the labor intensity of test operation personnel.Test function is fewer, no The parameter such as temperature and flow of gases at high pressure under on-position can be tested out by test specimen air brake valve assembly.It is tested air brake valve Assembly is in the case where releasing on-position, and exhaust outlet state parameter can not be tested.Air brake valve for trailer of tractor Performance Test System is not Muffler is installed, equipment noise is big, it is impossible to carry out reliability and durability test.

Therefore, a kind of compact conformation is developed, equipment noise is low, manufacturing process is relatively easy, multiple functional, combination property The Tractor-trailer combinatios air braking system multifunctional testing that good, automaticity is high, measuring accuracy is high and safe and reliable Device, will be favored by users.Verification experimental verification, the Tractor-trailer combinatios air braking system that we develop is multi-functional Test device possesses above-mentioned advantage, is completely suitable for the test on Tractor-trailer combinatios air braking system.

The content of the invention

It is an object of the invention to provide a kind of rational in infrastructure, moderate cost, equipment noise are low, multiple functional, comprehensive The good, measuring accuracy of energy is high, easy for installation and service-strong Tractor-trailer combinatios air braking system multipurpose test system.

The technical scheme is that：Tractor-trailer combinatios air braking system multipurpose test system, including：Subject is empty Air compressor and subject air accumulator test device, subject air brake valve dynamic characteristic cylinder drive system, subject air brake valve driving Device, subject air brake valve static characteristic hydraulic cylinders drive system, subject air brake valve venting test device, subject brake chamber drive Dynamic system, subject brake chamber loading system；It is tested air compressor and subject air accumulator test device is transported installed in tractor Left front inside defeated unit air braking system multipurpose test system, subject air compressor and subject air accumulator are arranged on subject On air compressor and subject air accumulator test device internal test site；In subject air compressor and subject air accumulator test In device, the 3rd carries the fast spigot joint right-hand member of air pressure of two check valves, by pneumatic circuit with being transported installed in tractor The subject air brake valve lower end air inlet of middle upper part is connected outside unit air braking system multipurpose test system；By gas testing system Dynamic valve dynamics cylinder drive system is arranged on right front inside Tractor-trailer combinatios air braking system multipurpose test system, The pneumatic pilot-operated type double check valve upper right end in air brake valve dynamic characteristic cylinder drive system is tested, passes through pneumatic circuit and three Individual three-way connection and the 4th output switching signal can atmospheric pressure converter air inlet, the 6th gas thermometer of electrical adjustment enter The cylinder rodless cavity of gas port, the 6th air gauge air inlet and the solution-air composite cylinder in subject air brake valve drive device Connect, pneumatic pilot-operated type double check valve bottom right-hand member, by pneumatic circuit with being arranged in subject air brake valve drive device The cylinder rod chamber of solution-air composite cylinder is connected；Air brake valve drive device is tested to be arranged on directly over subject air brake valve, and by The center line of gas testing braking valve drive and the center line for being tested air brake valve are coaxial, in subject air brake valve drive device Piston rod down stroke means for adjusting limit of movement in solution-air composite cylinder is contacted with being tested the brake pushrod of air brake valve；By gas testing system Dynamic valve static characteristic hydraulic cylinders drive system is arranged on inside Tractor-trailer combinatios air braking system multipurpose test system behind the right side Side；The fast spigot joint of the first hydraulic pressure with two check valves being tested in air brake valve static characteristic hydraulic cylinders drive system is left End, is connected by the hydraulic cylinder rodless cavity of fluid pressure line and the solution-air composite cylinder in subject air brake valve drive device, Second be tested in air brake valve static characteristic hydraulic cylinders drive system carries the fast spigot joint left end of hydraulic pressure of two check valves, leads to The hydraulic cylinder rod chamber for crossing fluid pressure line and the solution-air composite cylinder in subject air brake valve drive device is connected；Subject In the middle of air brake valve venting test device is arranged on outside Tractor-trailer combinatios air braking system multipurpose test system；Subject The 3rd air pressure digital flowmeter left end in air brake valve venting test device, by pneumatic circuit and three-way connection with 7th gas thermometer air inlet, the exhaust outlet connection for being tested air brake valve upper right end；It is tested brake chamber drive system peace Mounted in Tractor-trailer combinatios air braking system multipurpose test system bosom；It is tested the in brake chamber drive system Seven air gauge air inlets, are exported by the gases at high pressure of pneumatic circuit and a three-way connection and subject air brake valve bottom right-hand member Mouth is connected；The 7th be tested in brake chamber drive system carries the fast spigot joint right-hand member of air pressure of two check valves, passes through gas Pressure pipe road and a three-way connection and the 9th gas thermometer air inlet, the air inlet of the first subject brake chamber are connected；Subject The 8th in brake chamber drive system carries the fast spigot joint right-hand member of air pressure of two check valves, passes through pneumatic circuit and one Three-way connection and the tenth gas thermometer air inlet, the air inlet of the second subject brake chamber are connected；First subject brake chamber Brake pushrod and second subject brake chamber brake pushrod side by side parallel arrangement, installed in Tractor-trailer combinatios gas braking System multifunctional test device bosom, and in the dead astern of subject brake chamber drive system；It is tested brake chamber loading System is arranged on rear in Tractor-trailer combinatios air braking system multipurpose test system inside, subject brake chamber loading system The second subject brake chamber piston rod retraction stroke limit adjusting means in system, brake chamber is tested by screw thread and second Brake pushrod is connected；It is tested the first subject brake chamber piston rod retraction stroke limit regulation dress in brake chamber loading system Put, be connected by screw thread with the brake pushrod of the first subject brake chamber.

Air compressor and subject air accumulator test device are tested, including：First motor, the first gearbox, dynamometer machine, Torque meter, rotational speed meters, the first filter with bypass check valve, the first digital display, subject air compressor, the first gas Thermometer body, the first air gauge, the first output switching signal can electrical adjustment atmospheric pressure converter, first with two lists Can the atmospheric pressure converter of electrical adjustment, the second air gauge, to the fast spigot joint of the air pressure of valve, the second output switching signal Two gas thermometers, manual drainage liquid separator, the first air pressure digital flowmeter, the second air pressure with two check valves Fast spigot joint, subject air accumulator, the 3rd air gauge, third gas thermometer, the 3rd output switching signal can electrical adjustments Atmospheric pressure converter, the first overflow valve, the 3rd fast spigot joint of air pressure with two check valves；Air compressor will be tested The first motor output shaft with subject air accumulator test device, is connected by belt dressing with the first transmission input shaft； First output shaft of gear-box is connected by support frame with dynamometer machine input shaft；Dynamometer machine output shaft is defeated with torque meter by support frame Enter axle connection；Torque meter output shaft is connected by support frame with rotational speed meters input shaft；Rotational speed meters output shaft passes through support frame and quilt Try the connection of air compressor input shaft；First with the filter upper end gas outlet pneumatic circuit for bypassing check valve and three three Pass joint, successively can electrical adjustment with first gas thermometer air inlet, the first air gauge air inlet, the first output switching signal Atmospheric pressure converter air inlet, subject air compressor air inlet connects；In first filter with bypass check valve Gaseous impurity sensor-use line be connected with the first digital display；First digital display is with first with bypass check valve Filter in support frame be fixed on first with bypass check valve filter on；Manual drainage liquid separator left end enters Gas port, by pneumatic circuit and three three-way connections successively with being tested air compressor gas outlet, second gas thermometer air inlet Mouth, the second air gauge air inlet, the second output switching signal can electrical adjustment atmospheric pressure converter air inlet connect；First Air pressure digital flowmeter left end air inlet is connected by pneumatic circuit and manual drainage liquid separator right-hand member gas outlet, and first Air pressure digital flowmeter right-hand member gas outlet, it is left by pneumatic circuit and the fast spigot joint of the second air pressure with two check valves Air inlet is held to connect；Subject air accumulator left end air inlet is intubated soon by pneumatic circuit with the second air pressure with two check valves Joint right-hand member gas outlet is connected, and subject air accumulator right-hand member gas outlet passes through pneumatic circuit and the 3rd air pressure with two check valves Fast spigot joint left end air inlet is connected；It is tested air accumulator top and the 3rd air gauge, third gas temperature is installed with pipe joint successively Degree meter, the 3rd output switching signal can electrical adjustment atmospheric pressure converter, the first overflow valve；It is tested air accumulator bottom pipe Joint is connected with the first fast spigot joint upper end of air pressure with two check valves；First air pressure with two check valves is inserted soon Pipe joint lower end is connected by pneumatic circuit with drainage pipeline；The 3rd fast spigot joint right-hand member of air pressure with two check valves goes out Gas port is connected by pneumatic circuit with subject air brake valve lower end air inlet.

Air brake valve dynamic characteristic cylinder drive system is tested, including：Second motor, the second gearbox, second are with side The filter of road check valve, the second digital display, air compressor, the cooler of liquid cooling, the 4th carry two unidirectionally The fast spigot joint of air pressure of valve, air accumulator, the 4th air gauge, the 5th fast spigot joint of air pressure with two check valves, second Overflow valve, the 6th fast spigot joint of air pressure with two check valves, Auto-drainage liquid separator, internal flow direction can inverse regulation voltages Valve, the 5th air gauge, the 4th gas thermometer, oil sprayer, the first muffler, the second air pressure digital flowmeter, the 5th gas Thermometer, the direct action type proportional directional control valve of pulse counter with pneumatic output signal, Pneumatic unidirectional proportional velocity regulating valve, Pneumatic pilot-operated type double check valve, the 4th output switching signal can the atmospheric pressure converter of electrical adjustment, the 6th gas thermometer, 6th air gauge；The second motor output shaft in air brake valve dynamic characteristic cylinder drive system will be tested, passes through belt dressing It is connected with the second transmission input shaft；Second output shaft of gear-box is connected by support frame with air compressor input shaft；Second Filter outlet mouth pneumatic circuit with bypass check valve is connected with air compressor air inlet；Second is unidirectional with bypass Gaseous impurity sensor-use line in the filter of valve is connected with the second digital display；Second digital display passes through second Support frame in filter with bypass check valve is fixed on the second filter with bypass check valve；Liquid cooling Cooler air inlet is connected by pneumatic circuit and air compressor gas outlet, and the cooler gas outlet of liquid cooling passes through air pressure Pipeline and the fast spigot joint air inlet of the 4th air pressure with two check valves are connected；Air accumulator air inlet by pneumatic circuit with The fast spigot joint gas outlet of 4th air pressure with two check valves is connected, and air accumulator gas outlet passes through pneumatic circuit and the 6th band The fast spigot joint air inlet of air pressure for having two check valves is connected；Air accumulator top successively with pipe joint install the 4th air gauge, Second overflow valve, air accumulator bottom pipe joint is connected with the 5th fast spigot joint upper end of air pressure with two check valves；The The five fast spigot joint lower ends of air pressure with two check valves are connected by pneumatic circuit with drainage pipeline；Auto-drainage liquid point Connected from device air inlet by pneumatic circuit and the fast spigot joint gas outlet of the 6th air pressure with two check valves, Auto-drainage Liquid separator gas outlet flows to reversible pressure regulator valve air inlet by pneumatic circuit and inside and connected；Inside flows to reversible pressure regulator valve Gas outlet by pneumatic circuit and two three-way connections successively with the 5th air gauge air inlet, the 4th gas thermometer air inlet, Oil sprayer air inlet is connected；Bottom in the direct action type proportional directional control valve of pulse counter with pneumatic output signal is left Air inlet is held to be connected by pneumatic circuit and oil sprayer gas outlet, the Direct Action Type ratio of the pulse counter with pneumatic output signal Bottom right-hand member exhaust outlet in example directional control valve passes through pneumatic circuit and a three-way connection and the 5th gas thermometer air inlet Mouth, the second air pressure digital flowmeter air inlet are connected, the direct action type proportional side of the pulse counter with pneumatic output signal Connected to the upper left end gas outlet of control valve by pneumatic circuit and Pneumatic unidirectional proportional velocity regulating valve left end gas port, with pneumatic The upper right end gas outlet of the direct action type proportional directional control valve of the pulse counter of output signal by pneumatic circuit with it is pneumatic The bottom left end gas port of pilot-operated type double check valve is connected；Pneumatic pilot-operated type double check valve upper left end gas port by pneumatic circuit with Pneumatic unidirectional proportional velocity regulating valve right-hand member gas port is connected, and pneumatic pilot-operated type double check valve upper right end gas port passes through pneumatic circuit and three Individual three-way connection and the 4th output switching signal can atmospheric pressure converter air inlet, the 6th gas thermometer of electrical adjustment enter The rodless cavity of cylinder is connected in gas port, the 6th air gauge air inlet, solution-air composite cylinder, pneumatic pilot-operated type double check valve lower right Gas port is held to be connected by the rod chamber of cylinder in pneumatic circuit and solution-air composite cylinder；Second air pressure digital flowmeter gas outlet Connected by pneumatic circuit and the first muffler air inlet.

Air brake valve drive device is tested, including：The cylinder piston throw of lever in solution-air composite cylinder, solution-air composite cylinder is adjusted The up degree of piston rod in hydraulic cylinder piston rod stroke adjusting device, solution-air composite cylinder in regulating device, solution-air composite cylinder Position device, the piston rod up stroke means for adjusting limit of movement in solution-air composite cylinder, the first displacement transducer connection adjusting means, the One displacement transducer attachment means, the first displacement transducer, the first force snesor attachment means, the first force snesor, solution-air are multiple Close the piston rod down stroke means for adjusting limit of movement in cylinder, the piston rod down stroke stopping means in solution-air composite cylinder；By solution-air The cylinder piston rod stroke adjusting device upper end in solution-air composite cylinder in composite cylinder is combined with the solution-air in solution-air composite cylinder Cylinder piston rod in cylinder is spirally connected, the cylinder piston rod stroke adjusting device lower end in the solution-air composite cylinder in solution-air composite cylinder It is spirally connected with the piston rod up stroke means for adjusting limit of movement upper end in solution-air composite cylinder；Solution-air in solution-air composite cylinder is combined Hydraulic cylinder piston rod stroke adjusting device upper end in cylinder and the hydraulic cylinder piston in the solution-air composite cylinder in solution-air composite cylinder Bar is spirally connected, and the hydraulic cylinder piston rod stroke adjusting device lower end in solution-air composite cylinder in solution-air composite cylinder is combined with solution-air Piston rod up stroke means for adjusting limit of movement upper end in cylinder is spirally connected；Cylinder piston rod stroke adjusting device in solution-air composite cylinder It is in parallel with the hydraulic cylinder piston rod stroke adjusting device in solution-air composite cylinder；Piston rod up stroke in solution-air composite cylinder is spacing Adjusting means upper surface is below the piston rod up stroke stopping means in solution-air composite cylinder, and with the work in solution-air composite cylinder Stopper rod up stroke stopping means lower surface is contacted；First displacement transducer is connected in adjusting means upper end and solution-air composite cylinder Piston rod up stroke means for adjusting limit of movement lower end is spirally connected, the first displacement transducer connection adjusting means lower end and the first displacement sensing Device attachment means upper end is spirally connected；First displacement transducer attachment means lower end simultaneously with the first displacement transducer upper end and the first power Connecting device for sensor upper end is connected in parallel；First force snesor upper end is connected with the first force snesor attachment means lower end, the One force snesor lower end is connected with the piston rod down stroke means for adjusting limit of movement upper end in solution-air composite cylinder；In solution-air composite cylinder Piston rod down stroke means for adjusting limit of movement lower end with subject air brake valve brake pushrod contact；Piston in solution-air composite cylinder Bar down stroke stopping means is arranged on below the piston rod down stroke means for adjusting limit of movement in solution-air composite cylinder.

Air brake valve static characteristic hydraulic cylinders drive system is tested, including：First hydraulic pressure with two check valves is intubated soon Joint, the second fast spigot joint of hydraulic pressure with two check valves, the first hydralic pressure gauge, the first liquid-filled thermometer, the first output are opened OFF signal can electrical adjustment hydraulic pressure converter, first surge pilot-operated type double check valve, first surge unidirectional proportionality velocity modulation Valve, with main and pilot stage closed loop location control pilot proportional directional control valve, the first digital hydraulic formula flowmeter, First throttle valve, with manometric filter, the first hydraulically-controlled one-way valve, the volume adjustable hydraulic pump of electro-hydraulic servo control, the 3rd electricity Motivation, first shaft coupling, the first hydraulic pressure coarse filter, the direct-acting type proportional overflow valve with electromagnet position-force control；Will The fast spigot joint left end oil of the first hydraulic pressure with two check valves being tested in air brake valve static characteristic hydraulic cylinders drive system Mouth is connected by the rodless cavity of hydraulic cylinder in fluid pressure line and solution-air composite cylinder, and the first hydraulic pressure with two check valves is inserted soon Pipe joint right-hand member hydraulic fluid port passes through fluid pressure line and three three-way connections and the first hydralic pressure gauge, the first liquid-filled thermometer, the first output Switching signal can electrical adjustment hydraulic pressure converter, first surge pilot-operated type double check valve upper left end hydraulic fluid port connection；The The two hydraulic pressure fast spigot joint left end hydraulic fluid ports with two check valves have by fluid pressure line with hydraulic cylinder in solution-air composite cylinder Rod cavity is connected, and the second fast spigot joint right-hand member hydraulic fluid port of hydraulic pressure with two check valves is surged guide by fluid pressure line and first Formula double check valve bottom left end hydraulic fluid port is connected；The first unidirectional proportional velocity regulating valve left end hydraulic fluid port that surges passes through fluid pressure line and the first liquid Dynamic pilot-operated type double check valve upper right end hydraulic fluid port is connected, first surge unidirectional proportional velocity regulating valve right-hand member hydraulic fluid port by fluid pressure line with Connected with main with the right oil-out in pilot proportional directional control valve upper end that the closed loop location of pilot stage is controlled；First surges Pilot-operated type double check valve bottom right-hand member hydraulic fluid port and the pilot proportional direction of the closed loop location control with main and pilot stage are controlled The left oil-out in valve upper end processed is connected；First digital hydraulic formula flowmeter upper end oil inlet is by fluid pressure line with carrying main and elder generation The pilot proportional directional control valve lower end oil return opening for leading the closed loop location control of level is connected, under the first digital hydraulic formula flowmeter Hydraulic fluid port is brought out to connect by fluid pressure line and Hydraulic Main fuel tank；First throttle valve lower end oil inlet is by fluid pressure line with carrying pressure The filter upper end oil-out of power table is connected, and first throttle valve upper end oil-out is by fluid pressure line with carrying main and pilot stage The pilot proportional directional control valve lower end oil inlet of closed loop location control connect；First hydraulically-controlled one-way valve lower end oil inlet leads to The oil-out for crossing fluid pressure line and the volume adjustable hydraulic pump of electro-hydraulic servo control is connected, and the first hydraulically-controlled one-way valve upper end oil-out passes through Fluid pressure line and a three-way connection are with carrying manometric filter lower end oil inlet, with electromagnet position-force control Direct-acting type proportional overflow valve right-hand member oil inlet is connected；First shaft coupling input is connected with three-motor output shaft, and first The volume adjustable hydraulic pump drive shaft connection of axle device output end and electro-hydraulic servo control；First hydraulic pressure coarse filter lower end oil inlet passes through Fluid pressure line is connected with Hydraulic Main fuel tank, and the first hydraulic pressure coarse filter upper end oil-out passes through fluid pressure line and electro-hydraulic servo control Volume adjustable hydraulic pump oil inlet connect；The leakage hydraulic fluid port of the volume adjustable hydraulic pump of electro-hydraulic servo control passes through fluid pressure line and hydraulic pressure Main fuel tank is connected；Direct-acting type proportional overflow valve left end oil-out with electromagnet position-force control passes through fluid pressure line and liquid Main fuel tank is pressed to connect.

Air brake valve venting test device is tested, including：7th gas thermometer, the 3rd air pressure digital flowmeter, Two mufflers；The 3rd air pressure digital flowmeter left end air inlet being tested in air brake valve venting test device is passed through into air pressure Pipeline and a three-way connection and the 7th gas thermometer air inlet, the exhaust outlet connection for being tested air brake valve upper right end, the Three air pressure digital flowmeter right-hand member gas outlets are connected by pneumatic circuit and the second muffler air inlet.

Brake chamber drive system is tested, including：7th air gauge, the 8th gas thermometer, the 5th output switching signal Can the atmospheric pressure converter of electrical adjustment, the 4th air pressure digital flowmeter, the 7th air pressure with two check valves insert soon Pipe joint, the 9th gas thermometer, the first air pressure check valve, the 5th air pressure digital flowmeter, the second air pressure check valve, the 8th The fast spigot joint of air pressure, the tenth gas thermometer with two check valves；The high pressure gas of air brake valve bottom right-hand member will be tested Body gas outlet passes through pneumatic circuit and six three-way connections and the 7th air gauge air inlet, the 8th gas thermometer air inlet, Five output switching signals can the atmospheric pressure converter air inlet of electrical adjustment, the 4th air pressure digital flowmeter left end gas port, First air pressure check valve left end gas port, the 5th air pressure digital flowmeter left end gas port, the second air pressure check valve left end gas port connect It is logical；The 7th fast spigot joint left end gas port of air pressure with two check valves passes through pneumatic circuit and a three-way connection and the 4th Air pressure digital flowmeter right-hand member gas port, the first air pressure check valve right-hand member gas port are connected, the 7th air pressure with two check valves Fast spigot joint right-hand member gas port is manufactured experimently by pneumatic circuit and a three-way connection with the 9th gas thermometer air inlet, first Dynamic air inlet of air chamber is connected；The 8th fast spigot joint left end gas port of air pressure with two check valves passes through pneumatic circuit and one Three-way connection and the 5th air pressure digital flowmeter right-hand member gas port, the second air pressure check valve right-hand member gas port are connected, and the 8th carries two The fast spigot joint right-hand member gas port of air pressure of individual check valve is entered by pneumatic circuit and a three-way connection with the tenth gas thermometer Gas port, the second subject brake chamber air inlet are connected；The brake pushrod of first subject brake chamber and the second subject brake chamber Brake pushrod side by side parallel install.

Brake chamber loading system is tested, including：Second subject brake chamber piston rod retraction distance caging device, second It is tested brake chamber piston rod retraction stroke limit adjusting means, the second force snesor, the second force snesor attachment means, second Displacement transducer attachment means, second displacement sensor connection adjusting means, the second subject brake chamber piston rod stretch out stroke Means for adjusting limit of movement, the second subject brake chamber piston rod stretch out distance caging device, the second subject brake chamber piston rod and added Carrier fluid cylinder pressure, second displacement sensor, the first subject brake chamber piston rod retraction distance caging device, the first subject braking gas Room piston rod retraction stroke limit adjusting means, the 3rd force snesor, the 3rd force snesor attachment means, triple motion sensor Attachment means, triple motion sensor connection adjusting means, the first subject brake chamber piston rod stretch out stroke limit regulation dress Put, the first subject brake chamber piston rod stretches out distance caging device, the first subject brake chamber piston rod loading hydraulic cylinder, the Triple motion sensor, the 3rd fast spigot joint of hydraulic pressure with two check valves, hydraulic pressure auxiliary fuel tank, the guide with back-moving spring Formula check valve, the second digital hydraulic formula flowmeter, the 4th fast spigot joint of hydraulic pressure with two check valves, second are surged unidirectionally Proportional velocity regulating valve, the 5th fast spigot joint of hydraulic pressure with two check valves, the second hydralic pressure gauge, second liquid thermometer, second Output switching signal can the hydraulic pressure converter of electrical adjustment, the 3rd digital hydraulic formula flowmeter, electric-hydraulic proportion pilot-operated type overflow Valve, the electric-hydraulic proportion pilot operated compound relief valve with electromagnet position-force control and integrated electronic amplifier, ratio of surging is flowed to adjust Fast valve, second surge pilot-operated type double check valve, with main and pilot stage closed loop location control pilot type servo valve, second Hydraulically-controlled one-way valve, the filter with optics choke indicator, second throttle, the 4th motor, second shaft coupling, with multiple Resultant pressure or flow control unidirectional drive variable pump, the second hydraulic pressure coarse filter；The in brake chamber loading system will be tested Two subject brake chamber piston rod retraction stroke limit adjusting means left ends are connected with the brake pushrod of the second subject brake chamber, Meanwhile, the second subject brake chamber piston rod retraction stroke limit adjusting means left end and the second subject brake chamber piston rod contract Return the contact of distance caging device right-hand member；Second force snesor left end and the second subject brake chamber piston rod retraction stroke limit are adjusted Regulating device right-hand member is connected, and the second force snesor right-hand member is connected with the second force snesor attachment means left end；Second displacement sensor Attachment means left end is connected with the second force snesor attachment means right-hand member, and second displacement connecting device for sensor right-hand member is simultaneously with the Two displacement transducers connection adjusting means left end, the connection of second displacement sensor parallel；Second subject brake chamber piston rod is stretched Go out stroke limit adjusting means left end and the connection of adjusting means right-hand member is connected with second displacement sensor, the second subject brake chamber is lived Stopper rod stretches out stroke limit adjusting means right-hand member and is connected with the piston rod of the second subject brake chamber piston rod loading hydraulic cylinder；The Two subject brake chamber piston rods stretch out distance caging device and are arranged on the second subject brake chamber piston rod stretching stroke limit Adjusting means right-hand member；By the first subject brake chamber piston rod retraction stroke limit regulation being tested in brake chamber loading system Device left end is connected with the brake pushrod of the first subject brake chamber, meanwhile, the first subject brake chamber piston rod retraction stroke Means for adjusting limit of movement left end is contacted with the first subject brake chamber piston rod retraction distance caging device right-hand member；3rd force snesor Left end is connected with the first subject brake chamber piston rod retraction stroke limit adjusting means right-hand member, the 3rd force snesor right-hand member and the Three force snesor attachment means left ends are connected；Triple motion connecting device for sensor left end and the 3rd force snesor attachment means are right End connection, triple motion connecting device for sensor right-hand member be connected simultaneously with triple motion sensor adjusting means left end, the 3rd Displacement sensor is connected in parallel；First subject brake chamber piston rod stretches out stroke limit adjusting means left end and triple motion is sensed Device connection adjusting means right-hand member connection, the first subject brake chamber piston rod stretches out stroke limit adjusting means right-hand member and the first quilt Try the piston rod connection of brake chamber piston rod loading hydraulic cylinder；First subject brake chamber piston rod stretches out distance caging device Stroke limit adjusting means right-hand member is stretched out installed in the first subject brake chamber piston rod；Second subject brake chamber piston rod adds The piston rod side by side parallel of the piston rod of carrier fluid cylinder pressure and the first subject brake chamber piston rod loading hydraulic cylinder is installed；First quilt The piston rod for trying the brake pushrod and the first subject brake chamber piston rod loading hydraulic cylinder of brake chamber is co-axially mounted；Second quilt The piston rod for trying the brake pushrod and the second subject brake chamber piston rod loading hydraulic cylinder of brake chamber is co-axially mounted；Second liquid Digital flowmeter lower end is pressed to load hydraulic pressure by fluid pressure line and two three-way connections and the second subject brake chamber piston rod Cylinder rod chamber, the first subject brake chamber piston rod loading hydraulic cylinder rod chamber, the 4th hydraulic pressure with two check valves are inserted soon Pipe joint left end hydraulic fluid port is connected, and the second digital hydraulic formula flowmeter upper end passes through fluid pressure line and the pilot-operated type with back-moving spring Check valve lower end is connected, and hydraulic pressure auxiliary fuel tank lower end is connected by fluid pressure line with the guiding one-way valve upper end with back-moving spring Connect, hydraulic pressure auxiliary fuel tank top is connect by fluid pressure line with the 3rd fast spigot joint upper end oil inlet of hydraulic pressure with two check valves It is logical；The 3rd fast spigot joint lower end oil-out of hydraulic pressure with two check valves is connected by fluid pressure line and Hydraulic Main fuel tank； The second unidirectional proportional velocity regulating valve left end that surges passes through fluid pressure line and the 4th fast spigot joint of hydraulic pressure with two check valves is right Hydraulic fluid port is held to connect, the second unidirectional proportional velocity regulating valve right-hand member that surges is surged pilot-operated type double check valve top by fluid pressure line and second Left end hydraulic fluid port is connected；The 5th fast spigot joint left end hydraulic fluid port of hydraulic pressure with two check valves passes through fluid pressure line and two threeways Joint and the second subject brake chamber piston rod loading hydraulic cylinder rodless cavity, the first subject brake chamber piston rod loading hydraulic cylinder Rodless cavity, the guiding one-way valve upper end control port with back-moving spring are connected, and the 5th hydraulic pressure with two check valves is fast Spigot joint right-hand member passes through fluid pressure line and four three-way connections and the second hydralic pressure gauge oil inlet, second liquid thermometer oil-feed Mouthful, the second output switching signal can the hydraulic pressure converter oil inlet of electrical adjustment, the proportional velocity regulating valve upper end oil inlet that surges, Second surges the connection of pilot-operated type double check valve bottom left end hydraulic fluid port；Electric-hydraulic proportion pilot operated compound relief valve right-hand member oil inlet passes through hydraulic pressure Pipeline and proportional velocity regulating valve lower end oil-out connection of surging, electric-hydraulic proportion pilot operated compound relief valve left end oil-out pass through fluid pressure line Connected with the 3rd digital hydraulic formula flowmeter upper end oil inlet；3rd digital hydraulic formula flowmeter lower end oil-out passes through hydraulic tube Road is connected with Hydraulic Main fuel tank；Second surge pilot-operated type double check valve upper right end hydraulic fluid port by fluid pressure line with main and The right oil-out in upper end of the pilot type servo valve of the closed loop location control of pilot stage is connected, and second surges under pilot-operated type double check valve The upper end for the pilot type servo valve that portion's right-hand member hydraulic fluid port is controlled by fluid pressure line with the closed loop location with main and pilot stage is left Oil-out is connected；The pilot type servo valve lower end oil return opening of closed loop location control with main and pilot stage passes through fluid pressure line Connected with Hydraulic Main fuel tank, the pilot type servo valve lower end leakage hydraulic fluid port of the closed loop location control with main and pilot stage passes through Fluid pressure line is connected with Hydraulic Main fuel tank；Second hydraulically-controlled one-way valve upper end oil-out is by fluid pressure line with carrying main and guide The pilot type servo valve lower end oil inlet of the closed loop location control of level is connected, and the second hydraulically-controlled one-way valve lower end oil inlet passes through hydraulic pressure The pilot type servo valve lower end control port of the closed loop location control of pipeline and a three-way connection with carrying main and pilot stage, Filter upper end oil-out with optics choke indicator is connected；Filter lower end oil inlet with optics choke indicator Pass through fluid pressure line and two three-way connections and the electric-hydraulic proportion with electromagnet position-force control and integrated electronic amplifier Pilot operated compound relief valve right-hand member oil inlet, second throttle upper end oil-out, with composite pressure or flow control unidirectional drive become Pump control oil circuit is measured to connect；With composite pressure or flow control unidirectional drive variable pump upper end oil-out by fluid pressure line with Second throttle lower end oil inlet is connected, and hydraulic pressure is passed through with composite pressure or flow control unidirectional drive variable pump leakage hydraulic fluid port Pipeline is connected with Hydraulic Main fuel tank；Electric-hydraulic proportion pilot-operated type with electromagnet position-force control and integrated electronic amplifier overflows Valve left end oil-out is flowed to connect by fluid pressure line and Hydraulic Main fuel tank；Second shaft coupling input and the 4th motor output shaft Connection, second shaft coupling output end is connected with composite pressure or flow control unidirectional drive variable pump drive shaft；Second liquid Pressure coarse filter upper end oil-out is by fluid pressure line with controlling unidirectional drive variable pump lower end to enter with composite pressure or flow Hydraulic fluid port is connected, and the second hydraulic pressure coarse filter lower end oil inlet is connected by fluid pressure line and Hydraulic Main fuel tank.

It is of the invention to be using the good effect produced after above-mentioned technical proposal：The multipurpose test system is rational in infrastructure, into This moderate, equipment noise is low, multiple functional, good combination property, measuring accuracy are high, automaticity is high, both can be to tractor Transport unit air braking system carries out performance, reliability and durability test, at the same can also to single product air compressor, Air accumulator, air brake valve, brake chamber carry out performance, reliability and durability test, and integrated level is high, easy for installation and use peace It is complete reliable.

Brief description of the drawings

Fig. 1 is the structural representation of Tractor-trailer combinatios air braking system multipurpose test system of the present invention.

Embodiment

The present invention is described further below in conjunction with the accompanying drawings.As shown in figure 1, Tractor-trailer combinatios air braking system Multipurpose test system, mainly includes：It is tested air compressor and subject air accumulator test device 1, the dynamic spy of subject air brake valve Property cylinder drive system 27, subject air brake valve drive device 54, subject air brake valve static characteristic hydraulic cylinders drive system 67, quilt Gas testing brake valve venting test device 85, subject brake chamber drive system 89, subject brake chamber loading system 103.Subject Air compressor and subject air accumulator test device 1 are arranged in Tractor-trailer combinatios air braking system multipurpose test system Portion left front, subject air compressor 9 and subject air accumulator 20 are arranged on subject air compressor and subject air accumulator test dress Put on the corresponding test position in 1 inside；The 3rd in air compressor and subject air accumulator test device 1 is tested with two lists It is multi-functional with being arranged on Tractor-trailer combinatios air braking system by pneumatic circuit to the fast right-hand member of spigot joint 25 of the air pressure of valve The lower end air inlet of subject air brake valve 26 of middle upper part is connected outside test device；It is tested the driving of air brake valve dynamic characteristic cylinder System 27 is arranged on right front inside Tractor-trailer combinatios air braking system multipurpose test system, the dynamic spy of subject air brake valve Property cylinder drive system 27 in the pneumatic upper right end of pilot-operated type double check valve 50, by pneumatic circuit and three three-way connections with 4th output switching signal can the air inlet of atmospheric pressure converter 51 of electrical adjustment, the air inlet of the 6th gas thermometer 52, The cylinder rodless cavity of the air inlet of six air gauge 53 and the solution-air composite cylinder 55 in subject air brake valve drive device 54 connects Logical, the bottom right-hand member of pneumatic pilot-operated type double check valve 50 in subject air brake valve dynamic characteristic cylinder drive system 27 passes through air pressure The cylinder rod chamber of pipeline and the solution-air composite cylinder 55 in subject air brake valve drive device 54 is connected；By gas testing system Dynamic valve drive 54 is arranged on directly over subject air brake valve 26, and the center line and quilt of subject air brake valve drive device 54 The center line of gas testing brake valve 26 is coaxial, and the piston rod in solution-air composite cylinder in subject air brake valve drive device 54 is descending Journey means for adjusting limit of movement 65 is contacted with being tested the brake pushrod of air brake valve 26；It is tested air brake valve static characteristic Driven by Hydraulic Cylinder system System 67 is arranged on right back inside Tractor-trailer combinatios air braking system multipurpose test system；It is tested air brake valve static characteristic First in hydraulic cylinders drive system 67 carries the fast left end of spigot joint 68 of hydraulic pressure of two check valves, passes through fluid pressure line and peace The hydraulic cylinder rodless cavity of solution-air composite cylinder 55 in subject air brake valve drive device 54 is connected, and subject air brake valve is quiet Second in characteristic hydraulic cylinders drive system 67 carries the fast left end of spigot joint 69 of hydraulic pressure of two check valves, passes through fluid pressure line Connected with the hydraulic cylinder rod chamber of the solution-air composite cylinder 55 in subject air brake valve drive device 54；Braked by gas testing In the middle of valve exhaust test device 85 is arranged on outside Tractor-trailer combinatios air braking system multipurpose test system；By gas testing system The left end of the 3rd air pressure digital flowmeter 87 in dynamic valve exhaust test device 85, by pneumatic circuit and a three-way connection with The air inlet of 7th gas thermometer 86, the exhaust outlet parallel connection connection for being tested the upper right end of air brake valve 26；Brake chamber is tested to drive Dynamic system 89 is arranged on Tractor-trailer combinatios air braking system multipurpose test system bosom；It is tested brake chamber driving The air inlet of the 7th air gauge 90 in system 89, passes through pneumatic circuit and a three-way connection and the subject lower right of air brake valve 26 The gases at high pressure delivery outlet at end is connected；The 7th air pressure with two check valves in subject brake chamber drive system 89 is inserted soon The right-hand member of pipe joint 94, is braked by pneumatic circuit and a three-way connection and the air inlet of the 9th gas thermometer 95, the first subject The air inlet parallel connection of air chamber 101 is connected；The 8th air pressure with two check valves being tested in brake chamber drive system 89 is fast The right-hand member of spigot joint 99, is manufactured experimently by pneumatic circuit and a three-way connection with the air inlet of the tenth gas thermometer 100, second Take offence room 102 air inlet parallel connection connect；The brake pushrod of first subject brake chamber 101 and the second subject brake chamber 102 Brake pushrod side by side parallel arrangement, installed in Tractor-trailer combinatios air braking system multipurpose test system bosom, And in the dead astern of subject brake chamber drive system 89；It is tested brake chamber loading system 103 and is arranged on tractor transporter Second in group air braking system multipurpose test system bosom rear, subject brake chamber loading system 103 is manufactured experimently Room piston rod retraction stroke limit adjusting means 105 of taking offence is connected by the brake pushrod of screw thread and the second subject brake chamber 102 Connect；The first subject brake chamber piston rod retraction stroke limit adjusting means 115 being tested in brake chamber loading system 103 is led to The brake pushrod that screw thread is crossed with the first subject brake chamber 101 is connected.

Air compressor and subject air accumulator test device 1 are tested, including：First motor 2, the first gearbox 3, measurement of power The filter 7 of machine 4, torque meter 5, rotational speed meters 6, first with bypass check valve, the first digital display 8, subject air compression Machine 9, first gas thermometer 10, the first air gauge 11, the first output switching signal can electrical adjustment atmospheric pressure converter 12nd, first with the fast spigot joints 13 of air pressure of two check valves, the second output switching signal can electrical adjustment atmospheric pressure Converter 14, the second air gauge 15, second gas thermometer 16, manual drainage liquid separator 17, the digital stream of the first air pressure Air pressure fast spigot joint 19 of the gauge 18, second with two check valves, subject air accumulator 20, the 3rd air gauge 21, the 3rd gas Thermometer body 22, the 3rd output switching signal can atmospheric pressure converter 23, the first overflow valve the 24, the 3rd of electrical adjustment carry The fast spigot joint 25 of air pressure of two check valves；By the first electricity being tested in air compressor and subject air accumulator test device 1 The output shaft of motivation 2 is connected by belt dressing with the input shaft of the first gearbox 3；The output shaft of first gearbox 3 by support frame with The input shaft of dynamometer machine 4 is connected；The output shaft of dynamometer machine 4 is connected by support frame with the input shaft of torque meter 5；The output shaft of torque meter 5 leads to Support frame is crossed to be connected with the input shaft of rotational speed meters 6；The output shaft of rotational speed meters 6 is connected by support frame with subject air compressor 9 input shaft Connect；First with bypass check valve the upper end gas outlet pneumatic circuit of filter 7 and three three-way connections successively with the first gas The air inlet of thermometer body 10, the air inlet of the first air gauge 11, the first output switching signal can electrical adjustment atmospheric pressure conversion The air inlet of device 12, the air inlet parallel connection of subject air compressor 9 are connected；Gas in first filter 7 with bypass check valve Impurity sensor-use line is connected with the first digital display 8；First digital display 8 is with first with the mistake for bypassing check valve Support frame in filter 7 is fixed on the first filter 7 with bypass check valve；The left end of manual drainage liquid separator 17 enters Gas port is entered with subject air compressor 9 gas outlet, second gas thermometer 16 successively by pneumatic circuit and three three-way connections Gas port, the air inlet of the second air gauge 15, the second output switching signal can electrical adjustment the air inlet of atmospheric pressure converter 14 simultaneously Connection is logical；The left end air inlet of first air pressure digital flowmeter 18 passes through pneumatic circuit and the right-hand member of manual drainage liquid separator 17 Gas outlet is connected, and the right-hand member gas outlet of the first air pressure digital flowmeter 18 carries two check valves by pneumatic circuit with second The fast left end air inlet of spigot joint 19 of air pressure is connected；It is tested the left end air inlet of air accumulator 20 and carries two by pneumatic circuit and second The fast right-hand member gas outlet of spigot joint 19 of the air pressure of individual check valve is connected, the subject right-hand member gas outlet of air accumulator 20 by pneumatic circuit with The fast left end air inlet of spigot joint 25 of 3rd air pressure with two check valves is connected；Subject air accumulator 20 top is connect with pipe successively Head install the 3rd air gauge 21, third gas thermometer 22, the 3rd output switching signal can electrical adjustment atmospheric pressure conversion Device 23, the first overflow valve 24, intubation connects the subject bottom pipe joint of air accumulator 20 soon with the first air pressure with two check valves First 13 upper end is connected；The first fast lower end of spigot joint 13 of air pressure with two check valves is connect by pneumatic circuit with drainage pipeline It is logical；The 3rd fast right-hand member gas outlet of spigot joint 25 of air pressure with two check valves passes through pneumatic circuit and subject air brake valve 26 Lower end air inlet is connected.

Air brake valve dynamic characteristic cylinder drive system 27 is tested, including：Second motor 28, the second gearbox 29, second With the bypass filter 30 of check valve, the second digital display 31, air compressor 32, the cooler 33 of liquid cooling, the Four with the fast spigot joints 34 of air pressure of two check valves, air accumulator 35, the 4th air gauge the 36, the 5th with two check valves The fast spigot joint 37 of air pressure, the second overflow valve the 38, the 6th carry the fast spigot joint 39 of air pressure, the Auto-drainage liquid of two check valves Body separator 40, inside flow to reversible pressure regulator valve 41, the 5th air gauge 42, the 4th gas thermometer 43, oil sprayer 44, first disappeared Sound device 45, the second air pressure digital flowmeter 46, the 5th gas thermometer 47, pulse counter with pneumatic output signal Direct action type proportional directional control valve 48, Pneumatic unidirectional proportional velocity regulating valve 49, pneumatic pilot-operated type double check valve 50, the 4th output switch Signal can electrical adjustment atmospheric pressure converter 51, the 6th gas thermometer 52, the 6th air gauge 53；Air brake valve will be tested The output shaft of the second motor 28 in dynamic characteristic cylinder drive system 27 is connected by belt dressing and the input shaft of the second gearbox 29 Connect；The output shaft of second gearbox 29 is connected by support frame with the input shaft of air compressor 32；Second with bypass check valve The gas outlet pneumatic circuit of filter 30 is connected with the air inlet of air compressor 32；Second filter 30 with bypass check valve In gaseous impurity sensor-use line be connected with the second digital display 31；Second digital display 31 is by second with side Support frame in the filter 30 of road check valve is fixed on the second filter 30 with bypass check valve；Liquid cooling it is cold But the air inlet of device 33 is connected by pneumatic circuit and the gas outlet of air compressor 32, and the gas outlet of cooler 33 of liquid cooling passes through Pneumatic circuit and the fast air inlet of spigot joint 34 of the 4th air pressure with two check valves are connected；The air inlet of air accumulator 35 passes through gas The fast gas outlet of spigot joint 34 of air pressure of the pressure pipe Lu Yu tetra- with two check valves is connected, and the gas outlet of air accumulator 35 passes through air pressure Pipeline and the fast air inlet of spigot joint 39 of the 6th air pressure with two check valves are connected；Pipe joint is used successively in the top of air accumulator 35 4th air gauge 36, the second overflow valve 38 are installed；The bottom pipe joint of air accumulator 35 and the 5th air pressure with two check valves The fast upper end of spigot joint 37 connection；The 5th fast lower end of spigot joint 37 of air pressure with two check valves passes through pneumatic circuit and row Waterpipe is connected；The air inlet of Auto-drainage liquid separator 40 is fast by pneumatic circuit and the 6th air pressure with two check valves The gas outlet of spigot joint 39 is connected, and the gas outlet of Auto-drainage liquid separator 40 can inverse regulation voltage with internal flow direction by pneumatic circuit The air inlet of valve 41 is connected；Inside flows to the reversible gas outlet of pressure regulator valve 41 by pneumatic circuit and two three-way connections successively with the 5th The air inlet of air gauge 42, the air inlet of the 4th gas thermometer 43, the parallel connection of the air inlet of oil sprayer 44 are connected；With pneumatic output signal Pulse counter direct action type proportional directional control valve 48 in bottom left end air inlet, pass through pneumatic circuit and oil sprayer 44 Gas outlet is connected, the bottom right-hand member row in the direct action type proportional directional control valve 48 of the pulse counter with pneumatic output signal Gas port, passes through pneumatic circuit and a three-way connection and the air inlet of the 5th gas thermometer 47, the second air pressure digital flowmeter The parallel connection of 46 air inlets is connected, and the top of the direct action type proportional directional control valve 48 of the pulse counter with pneumatic output signal is left Bring out gas port to connect by pneumatic circuit and the left end gas port of Pneumatic unidirectional proportional velocity regulating valve 49, the pulse with pneumatic output signal The upper right end gas outlet of the direct action type proportional directional control valve 48 of counter, it is double unidirectional by pneumatic circuit and pneumatic pilot-operated type The bottom left end gas port of valve 50 is connected；The pneumatic upper left end gas port of pilot-operated type double check valve 50 passes through pneumatic circuit and Pneumatic unidirectional ratio Example flow speed control valve 49 right-hand member gas port is connected, and the pneumatic upper right end gas port of pilot-operated type double check valve 50 passes through pneumatic circuit and three three Pass joint and the 4th output switching signal can the air inlet of atmospheric pressure converter 51, the 6th gas thermometer 52 of electrical adjustment enter Gas port, the air inlet of the 6th air gauge 53, the rodless cavity parallel connection of cylinder in solution-air composite cylinder 55 are connected, and pneumatic pilot-operated type is double single Connected to the bottom right-hand member gas port of valve 50 by the rod chamber of the cylinder in pneumatic circuit and solution-air composite cylinder 55；Second air pressure number The gas outlet of word formula flowmeter 46 is connected by pneumatic circuit and the air inlet of the first muffler 45.

Air brake valve drive device 54 is tested, including：Cylinder piston rod row in solution-air composite cylinder 55, solution-air composite cylinder The piston rod in hydraulic cylinder piston rod stroke adjusting device 57, solution-air composite cylinder in journey adjusting means 56, solution-air composite cylinder Piston rod up stroke means for adjusting limit of movement 59, the connection of the first displacement transducer in up stroke stopping means 58, solution-air composite cylinder Adjusting means 60, the first displacement transducer attachment means 61, the first displacement transducer 62, the first force snesor attachment means 63, The piston in piston rod down stroke means for adjusting limit of movement 65, solution-air composite cylinder in first force snesor 64, solution-air composite cylinder Bar down stroke stopping means 66；By the cylinder piston rod stroke adjusting device 56 in the solution-air composite cylinder in solution-air composite cylinder 55 Upper end is spirally connected with the cylinder piston rod in the solution-air composite cylinder in solution-air composite cylinder 55, and the solution-air in solution-air composite cylinder 55 is answered Close the lower end of cylinder piston rod stroke adjusting device 56 in cylinder and the piston rod up stroke means for adjusting limit of movement in solution-air composite cylinder 59 upper ends are spirally connected；By the upper end of hydraulic cylinder piston rod stroke adjusting device 57 in the solution-air composite cylinder in solution-air composite cylinder 55 with The hydraulic cylinder piston rod in solution-air composite cylinder in solution-air composite cylinder 55 is spirally connected, the solution-air composite cylinder in solution-air composite cylinder 55 The interior lower end of hydraulic cylinder piston rod stroke adjusting device 57 and the piston rod up stroke means for adjusting limit of movement 59 in solution-air composite cylinder Upper end is spirally connected；Cylinder piston rod stroke adjusting device 56 in solution-air composite cylinder and the hydraulic cylinder piston rod in solution-air composite cylinder Stroke adjusting device 57 is in parallel；The upper surface of piston rod up stroke means for adjusting limit of movement 59 in solution-air composite cylinder is compound in solution-air The lower section of piston rod up stroke stopping means 58 in cylinder, and with the piston rod up stroke stopping means 58 in solution-air composite cylinder End contact；First displacement transducer connects the upper end of adjusting means 60 and the spacing tune of piston rod up stroke in solution-air composite cylinder The lower end of regulating device 59 is spirally connected, on the first displacement transducer connection lower end of adjusting means 60 and the first displacement transducer attachment means 61 End is spirally connected；The lower end of first displacement transducer attachment means 61 connects with the upper end of the first displacement transducer 62 and the first force snesor simultaneously The upper end of connection device 63 is connected in parallel；The upper end of first force snesor 64 is connected with the lower end of the first force snesor attachment means 63, and first The lower end of force snesor 64 is connected with the upper end of piston rod down stroke means for adjusting limit of movement 65 in solution-air composite cylinder；Solution-air composite cylinder The interior lower end of piston rod down stroke means for adjusting limit of movement 65 is contacted with the subject brake pushrod of air brake valve 26；In solution-air composite cylinder Piston rod down stroke stopping means 66 be arranged on the lower section of piston rod down stroke means for adjusting limit of movement 65 in solution-air composite cylinder； Cylinder piston rod or hydraulic pressure of the piston rod down stroke means for adjusting limit of movement 65 in solution-air composite cylinder 55 in solution-air composite cylinder When cylinder piston rod moves downward arrival range, the lower end of piston rod down stroke means for adjusting limit of movement 65 in solution-air composite cylinder With the upper-end contact of piston rod down stroke stopping means 66 in solution-air composite cylinder.

Air brake valve static characteristic hydraulic cylinders drive system 67 is tested, including：First hydraulic pressure with two check valves is inserted soon Pipe joint 68, second with the fast spigot joints 69 of hydraulic pressure of two check valves, the first hydralic pressure gauge 70, the first liquid-filled thermometer 71, First output switching signal can electrical adjustment hydraulic pressure converter 72, first surge pilot-operated type double check valve 73, the first liquid Move unidirectional proportional velocity regulating valve 74, the pilot proportional directional control valve 75 of closed loop location control with main and pilot stage, the One digital hydraulic formula flowmeter 76, first throttle valve 77, with manometric filter 78, the first hydraulically-controlled one-way valve 79, electro-hydraulic Servo-controlled volume adjustable hydraulic pump 80, three-motor 81, first shaft coupling 82, the first hydraulic pressure coarse filter 83, with electromagnetism The direct-acting type proportional overflow valve 84 of iron position-force control；The in air brake valve static characteristic hydraulic cylinders drive system 67 will be tested One carries the fast left end hydraulic fluid port of spigot joint 68 of hydraulic pressure of two check valves, passes through the liquid in fluid pressure line and solution-air composite cylinder 55 The rodless cavity of cylinder pressure is connected, and the first fast right-hand member hydraulic fluid port of spigot joint 68 of hydraulic pressure with two check valves passes through fluid pressure line and three Individual three-way connection and the first hydralic pressure gauge 70, the first liquid-filled thermometer 71, the first output switching signal can electrical adjustment hydraulic pressure pressure Force transducer 72, first surge the upper left end hydraulic fluid port of pilot-operated type double check valve 73 parallel connection connection；Second with two check valves The fast left end hydraulic fluid port of spigot joint 69 of hydraulic pressure is connected by the rod chamber of the hydraulic cylinder in fluid pressure line and solution-air composite cylinder 55, the Two carry the fast right-hand member hydraulic fluid port of spigot joint 69 of hydraulic pressure of two check valves, and pilot-operated type pair is surged unidirectionally by fluid pressure line and first The bottom left end hydraulic fluid port of valve 73 is connected；The first unidirectional left end hydraulic fluid port of proportional velocity regulating valve 74 and first that surges surges pilot-operated type double check valve 73 upper right end hydraulic fluid ports are connected, and first surges the unidirectional right-hand member hydraulic fluid port of proportional velocity regulating valve 74 by fluid pressure line and with main and elder generation The right oil-out in the upper end of pilot proportional directional control valve 75 for leading the closed loop location control of level is connected；First surges pilot-operated type pair singly On the pilot proportional directional control valve 75 controlled to the bottom right-hand member hydraulic fluid port of valve 73 with the closed loop location with main and pilot stage Left oil-out is held to connect；The upper end oil inlet of first digital hydraulic formula flowmeter 76 is by fluid pressure line with carrying main and pilot stage The lower end oil return opening of pilot proportional directional control valve 75 of closed loop location control connect, under the first digital hydraulic formula flowmeter 76 Hydraulic fluid port is brought out to connect by fluid pressure line and Hydraulic Main fuel tank；The lower end oil inlet of first throttle valve 77 by fluid pressure line with it is with pressure The upper end oil-out of filter 78 of power table is connected, and the upper end oil-out of first throttle valve 77 is by fluid pressure line with carrying main and elder generation The lower end oil inlet of pilot proportional directional control valve 75 for leading the closed loop location control of level is connected；The lower end of first hydraulically-controlled one-way valve 79 Oil inlet is connected by the oil-out of fluid pressure line and the volume adjustable hydraulic pump of electro-hydraulic servo control 80, on the first hydraulically-controlled one-way valve 79 Hydraulic fluid port is brought out by fluid pressure line and a three-way connection with carrying the manometric lower end oil inlet of filter 78, with electromagnet The right-hand member oil inlet of direct-acting type proportional overflow valve 84 parallel connection of position-force control is connected；The input of first shaft coupling 82 and the 3rd electricity The output shaft of motivation 81 is connected, and the drive shaft of volume adjustable hydraulic pump 80 of the output end of first shaft coupling 82 and electro-hydraulic servo control is connected；The The lower end oil inlet of one hydraulic pressure coarse filter 83 is connected by fluid pressure line and Hydraulic Main fuel tank, the upper end of the first hydraulic pressure coarse filter 83 Oil-out is connected by the oil inlet of fluid pressure line and the volume adjustable hydraulic pump of electro-hydraulic servo control 80；The variable of electro-hydraulic servo control The leakage hydraulic fluid port of hydraulic pump 80 is connected by fluid pressure line and Hydraulic Main fuel tank；Direct Action Type with electromagnet position-force control The left end oil-out of proportional pressure control valve 84 is connected by fluid pressure line and Hydraulic Main fuel tank.

Air brake valve venting test device 85 is tested, including：7th gas thermometer 86, the 3rd air pressure digital flowmeter 87th, the second muffler 88；The left end of the 3rd air pressure digital flowmeter 87 being tested in air brake valve venting test device 85 is entered Gas port, passes through pneumatic circuit and a three-way connection and the air inlet of the 7th gas thermometer 86, the subject air brake valve 26 top right side The exhaust outlet parallel connection at end is connected, and the right-hand member gas outlet of the 3rd air pressure digital flowmeter 87 passes through pneumatic circuit and the second muffler 88 Air inlet is connected.

Brake chamber drive system 89 is tested, including：7th air gauge 90, the output of the 8th gas thermometer the 91, the 5th are opened OFF signal can the atmospheric pressure converter 92 of electrical adjustment, the 4th air pressure digital flowmeter the 93, the 7th with two check valves The fast spigot joint 94 of air pressure, the 9th gas thermometer 95, the first air pressure check valve 96, the 5th air pressure digital flowmeter 97, Second air pressure check valve the 98, the 8th carries the fast spigot joint 99 of air pressure, the tenth gas thermometer 100 of two check valves；Will be by The gases at high pressure gas outlet of the bottom right-hand member of gas testing brake valve 26, passes through pneumatic circuit and six three-way connections and the 7th air gauge 90 Air inlet, the air inlet of the 8th gas thermometer 91, the 5th output switching signal can the atmospheric pressure converter 92 of electrical adjustment enter Gas port, the left end gas port of the 4th air pressure digital flowmeter 93, the left end gas port of the first air pressure check valve 96, the digital stream of the 5th air pressure The left end gas port of gauge 97, the parallel connection of the left end gas port of the second air pressure check valve 98 are connected；7th air pressure with two check valves is inserted soon The left end gas port of pipe joint 94, by pneumatic circuit and a three-way connection and the right-hand member gas port of the 4th air pressure digital flowmeter 93, The parallel connection of the right-hand member gas port of first air pressure check valve 96 is connected, and the 7th carries the fast right-hand member gas of spigot joint 94 of air pressure of two check valves Mouthful, pass through pneumatic circuit and a three-way connection and the air inlet of the 9th gas thermometer 95, the first subject air inlet of brake chamber 101 Mouth is in parallel to be connected；8th carries the fast left end gas port of spigot joint 99 of air pressure of two check valves, passes through pneumatic circuit and one three Pass joint and the right-hand member gas port of the 5th air pressure digital flowmeter 97, the right-hand member gas port of the second air pressure check valve 98 is in parallel connects, and the 8th The fast right-hand member gas port of spigot joint 99 of air pressure with two check valves, passes through pneumatic circuit and a three-way connection and the tenth gas The air inlet of thermometer 100, the second subject brake chamber 102 air inlet parallel connection are connected；The braking of first subject brake chamber 101 is pushed away The brake pushrod side by side parallel of bar and the second subject brake chamber 102 is installed.

Brake chamber loading system 103 is tested, including：Second subject brake chamber piston rod retraction distance caging device 104th, the second subject brake chamber piston rod retraction stroke limit adjusting means 105, the second force snesor 106, the second power sensing Device attachment means 107, second displacement connecting device for sensor 108, second displacement sensor connection adjusting means 109, the second quilt Try brake chamber piston rod and stretch out the subject brake chamber piston rod stretching stroke limit dress of stroke limit adjusting means 110, second Put the 111, second subject brake chamber piston rod loading hydraulic cylinder 112, the subject brake chamber of second displacement sensor 113, first The subject brake chamber piston rod retraction stroke limit of piston rod retraction distance caging device 114, first adjusting means the 115, the 3rd Force snesor 116, the 3rd force snesor attachment means 117, triple motion connecting device for sensor 118, triple motion sensor Connect the subject brake chamber piston rod of adjusting means 119, first and stretch out the subject braking gas of stroke limit adjusting means 120, first Room piston rod stretches out the subject brake chamber piston rod of distance caging device 121, first loading hydraulic cylinder 122, triple motion sensing Hydraulic pressure fast spigot joint 124 of the device the 123, the 3rd with two check valves, hydraulic pressure auxiliary fuel tank 125, the guide with back-moving spring The fast spigot joint 128 of hydraulic pressure of formula check valve 126, the second digital hydraulic formula flowmeter the 127, the 4th with two check valves, the Two surge unidirectional proportional velocity regulating valve the 129, the 5th with the fast spigot joints 130 of hydraulic pressure of two check valves, the second hydralic pressure gauge 131, Second liquid thermometer 132, the second output switching signal can electrical adjustment hydraulic pressure converter 133, the 3rd digital hydraulic Formula flowmeter 134, electric-hydraulic proportion pilot operated compound relief valve 135, with electromagnet position-force control and integrated electronic amplifier Electric-hydraulic proportion pilot operated compound relief valve 136, the proportional velocity regulating valve 137 that surges, second surge pilot-operated type double check valve 138, with main With the pilot type servo valve 139 of the closed loop location control of pilot stage, the second hydraulically-controlled one-way valve 140, with optics choke indicator Filter 141, second throttle 142, the 4th motor 143, second shaft coupling 144, control with composite pressure or flow Unidirectional drive variable pump 145, the second hydraulic pressure coarse filter 146；Be tested in brake chamber loading system 103 second is manufactured experimently The left end of room piston rod retraction stroke limit adjusting means 105 of taking offence is connected with the brake pushrod of the second subject brake chamber 102；Together When, the left end of the second subject brake chamber piston rod retraction stroke limit adjusting means 105 and second is tested brake chamber piston rod The right-hand member of retraction distance caging device 104 is contacted；The left end of second force snesor 106 and the second subject brake chamber piston rod are retracted and gone The right-hand member of journey means for adjusting limit of movement 105 is connected, and the right-hand member of the second force snesor 106 and the left end of the second force snesor attachment means 107 connect Connect；The left end of second displacement connecting device for sensor 108 is connected with the right-hand member of the second force snesor attachment means 107, and second displacement is passed The right-hand member of sensor attachment means 108 is connected the left end of adjusting means 109, second displacement sensor 113 with second displacement sensor simultaneously It is connected in parallel；Second subject brake chamber piston rod stretches out the left end of stroke limit adjusting means 110 and connected with second displacement sensor The connection of the right-hand member of adjusting means 109 is connect, the second subject brake chamber piston rod stretches out the right-hand member of stroke limit adjusting means 110 and second Be tested the piston rod connection of brake chamber piston rod loading hydraulic cylinder 112, when the second subject brake chamber 102 brake pushrod to When overhanging arrival range, the second subject brake chamber piston rod stretches out the right-hand member of stroke limit adjusting means 110 and second It is tested brake chamber piston rod and stretches out the contact of the left end of distance caging device 111；The in brake chamber loading system 103 will be tested The braking of the left end of one subject brake chamber piston rod retraction stroke limit adjusting means 115 and the first subject brake chamber 101 is pushed away Bar is connected；Meanwhile, the left end of the first subject brake chamber piston rod retraction stroke limit adjusting means 115 and the first subject braking gas The right-hand member of room piston rod retraction distance caging device 114 is contacted；The left end of 3rd force snesor 116 and the first subject brake chamber piston The right-hand member of bar retraction stroke limit adjusting means 115 is connected, the right-hand member of the 3rd force snesor 116 and the 3rd force snesor attachment means 117 left ends are connected；The left end of triple motion connecting device for sensor 118 is connected with the right-hand member of the 3rd force snesor attachment means 117, the The right-hand member of triple motion connecting device for sensor 118 is connected the left end of adjusting means 119, triple motion with triple motion sensor and passed simultaneously Sensor 123 is connected in parallel；First subject brake chamber piston rod stretches out the left end of stroke limit adjusting means 120 and triple motion is passed Sensor connection adjusting means 119 right-hand member connection, the first subject brake chamber piston rod stretches out the right-hand member of stroke limit adjusting means 120 It is connected with the piston rod of the first subject brake chamber piston rod loading hydraulic cylinder 122, when the braking of the first subject brake chamber 101 Push rod is protruding when reaching range, and the first subject brake chamber piston rod stretches out the right-hand member of stroke limit adjusting means 120 The left end of distance caging device 121 is stretched out with the first subject brake chamber piston rod to contact；Second subject brake chamber piston rod adds The piston rod side by side parallel of the piston rod of carrier fluid cylinder pressure 112 and the first subject brake chamber piston rod loading hydraulic cylinder 122 is installed； The piston rod of the brake pushrod of first subject brake chamber 101 and the first subject brake chamber piston rod loading hydraulic cylinder 122 is same Axle is installed；The work of the brake pushrod of second subject brake chamber 102 and the second subject brake chamber piston rod loading hydraulic cylinder 112 Stopper rod is co-axially mounted；The lower end of second digital hydraulic formula flowmeter 127 is tested by fluid pressure line and two three-way connections and second The rod chamber of brake chamber piston rod loading hydraulic cylinder 112, the rod chamber of the first subject brake chamber piston rod loading hydraulic cylinder 122, The fast left end hydraulic fluid port of spigot joint 128 parallel connection of 4th hydraulic pressure with two check valves is connected, the second digital hydraulic formula flowmeter 127 Upper end is connected by fluid pressure line with the lower end of guiding one-way valve 126 with back-moving spring, and the lower end of hydraulic pressure auxiliary fuel tank 125 passes through Fluid pressure line is connected with the upper end of guiding one-way valve 126 with back-moving spring；The top of hydraulic pressure auxiliary fuel tank 125 passes through fluid pressure line Connected with the upper end oil inlet of the fast spigot joint of the 3rd hydraulic pressure with two check valves 124；3rd liquid with two check valves The fast lower end oil-out of spigot joint 124 is pressed to be connected by fluid pressure line and Hydraulic Main fuel tank；Second surges unidirectional proportional velocity regulating valve 129 left ends are connected by fluid pressure line and the fast right-hand member hydraulic fluid port of spigot joint 128 of the 4th hydraulic pressure with two check valves, the second liquid The unidirectional right-hand member of proportional velocity regulating valve 129 is moved to connect with the second upper left end hydraulic fluid port of pilot-operated type double check valve 138 that surges by fluid pressure line It is logical；The 5th fast left end hydraulic fluid port of spigot joint 130 of hydraulic pressure with two check valves by fluid pressure line and two three-way connections with The rodless cavity of second subject brake chamber piston rod loading hydraulic cylinder 112, the first subject brake chamber piston rod loading hydraulic cylinder 122 Rodless cavity, the upper end control port parallel connection of guiding one-way valve 126 with back-moving spring are connected, and the 5th with two check valves The fast right-hand member of spigot joint 130 of hydraulic pressure passes through fluid pressure line and four three-way connections and the oil inlet of the second hydralic pressure gauge 131, second liquid The oil inlet of thermometer 132, the second output switching signal can the oil inlet of hydraulic pressure converter 133 of electrical adjustment, ratios of surging The upper end oil inlet of flow speed control valve 137, the second bottom left end hydraulic fluid port parallel connection of pilot-operated type double check valve 138 of surging are connected；Electric-hydraulic proportion is first The right-hand member oil inlet of conduction overflow valve 135 is connected by fluid pressure line and the lower end oil-out of proportional velocity regulating valve 137 that surges, electric-hydraulic proportion The left end oil-out of pilot operated compound relief valve 135 is connected by fluid pressure line and the upper end oil inlet of the 3rd digital hydraulic formula flowmeter 134； The lower end oil-out of 3rd digital hydraulic formula flowmeter 134 is connected by fluid pressure line and Hydraulic Main fuel tank；Second surges pilot-operated type The pilot-operated type that the upper right end hydraulic fluid port of double check valve 138 is controlled by fluid pressure line with the closed loop location with main and pilot stage is watched Take the right oil-out in the upper end of valve 139 to connect, second surges the bottom right-hand member hydraulic fluid port of pilot-operated type double check valve 138, by fluid pressure line with Connected with main with the left oil-out in the upper end of pilot type servo valve 139 that the closed loop location of pilot stage is controlled；With main and elder generation The lower end oil return opening of pilot type servo valve 139 for leading the closed loop location control of level is connected by fluid pressure line with hydraulic pressure main fuel tank, band The lower end of the pilot type servo valve 139 leakage hydraulic fluid port for having the closed loop location control of main and pilot stage passes through fluid pressure line and Hydraulic Main Fuel tank is connected；The upper end oil-out of second hydraulically-controlled one-way valve 140 passes through fluid pressure line and the closed loop location with main and pilot stage The lower end oil inlet of pilot type servo valve 139 of control is connected, and the lower end oil inlet of the second hydraulically-controlled one-way valve 140 passes through fluid pressure line The lower end control port of pilot type servo valve 139 with a three-way connection and the closed loop location control with main and pilot stage, The upper end oil-out parallel connection of filter 141 with optics choke indicator is connected；Filter 141 with optics choke indicator Lower end oil inlet, by fluid pressure line and two three-way connections with carrying electromagnet position-force control and integrated electronic amplifier The right-hand member oil inlet of electric-hydraulic proportion pilot operated compound relief valve 136, the upper end oil-out of second throttle 142, band composite pressure or flow Unidirectional drive variable pump 145 is controlled to control oil circuit parallel connection to connect；With composite pressure or flow control unidirectional drive variable pump 145 Upper end oil-out is connected by fluid pressure line and the lower end oil inlet of second throttle 142, single with composite pressure or flow control Connected to driving variable pump 145 leakage hydraulic fluid port by fluid pressure line and Hydraulic Main fuel tank；With electromagnet position-force control and The left end oil-out of electric-hydraulic proportion pilot operated compound relief valve 136 of integrated electronic amplifier passes through fluid pressure line and Hydraulic Main oil tank joint It is logical；The input of second shaft coupling 144 is connected with the output shaft of the 4th motor 143, and the output end of second shaft coupling 144 is compound with carrying The drive shaft of Pressure control or flow control unidirectional drive variable pump 145 is connected；The upper end oil-out of second hydraulic pressure coarse filter 146 passes through liquid Pressure pipe road with composite pressure or the lower end oil inlet of flow control unidirectional drive variable pump 145 with connecting, the second hydraulic pressure coarse filtration The lower end oil inlet of device 146 is connected by fluid pressure line and Hydraulic Main fuel tank.

Tractor-trailer combinatios air braking system multipurpose test system is carried out to Tractor-trailer combinatios air braking system During test, under initial state, operating procedure is as follows：

Be tested air compressor and subject air accumulator test device 1 in initial state, subject air compressor and by It is off the first fast spigot joint 13 of air pressure with two check valves in examination air accumulator test device 1.Start the One motor 2 is tested air compressor 9 by belt dressing, the first gearbox 3, dynamometer machine 4, torque meter 5, the driving of rotational speed meters 6, Air compressor 9 is tested after the first suction air of filter 7 with bypass check valve, the compressed air of generation is passed through Intubation connects the air pressure of manual drainage liquid separator 17, the first air pressure digital flowmeter 18, second with two check valves soon First 19, subject air accumulator 20, the 3rd air gauge 21, third gas thermometer 22, the 3rd output switching signal can electrical adjustments Atmospheric pressure converter 23, the first overflow valve the 24, the 3rd carry the fast spigot joint 25 of air pressure of two check valves, then pass through air pressure Pipeline enters the subject air inlet of air brake valve 26.First overflow valve 24 limits subject air compressor 9, subject air accumulator 20, quilt The maximum pressure of the air inlet of gas testing brake valve 26, that is, limit the maximum pressure of Tractor-trailer combinatios air braking system.First gas Thermometer body 10, the first air gauge 11 indicate respectively the subject intake air temperature test data of air compressor 9 and admission pressure test Data, at the same the first output switching signal can electrical adjustment atmospheric pressure converter 12 collection subject the air inlet of air compressor 9 Gas pressure data inputs to computer.Second output switching signal can electrical adjustment atmospheric pressure converter 14 collection quilt The pressure at expulsion data input of air compressor 9 is tried to computer, while the second air gauge 15, second gas thermometer 16 refer to respectively Show the subject pressure at expulsion test data of air compressor 9 and delivery temperature test data.3rd air gauge 21, third gas temperature Meter 22 indicates respectively the subject pressure testing data of air accumulator 20 and temperature test data, while the 3rd output switching signal can electronics The collection subject pressure data of air accumulator 20 of atmospheric pressure converter 23 of regulation inputs to computer.

Air brake valve dynamic characteristic cylinder drive system 27 is tested in initial state, in subject air brake valve dynamic characteristic cylinder It is off the 5th fast spigot joint 37 of air pressure with two check valves in drive system 27.Start the second motor 28 drive air compressor 32 by belt dressing, the second gearbox 29, and air compressor 32 is unidirectional with bypass by second After the suction air of filter 30 of valve, by cooler 33, fourth of the compressed air of generation Jing Guo liquid cooling with two lists To the fast spigot joint 34 of the air pressure of valve, air accumulator 35, the 4th air gauge 36, the second overflow valve the 38, the 6th with two check valves The fast spigot joint 39 of air pressure, Auto-drainage liquid separator 40, inside flow to reversible pressure regulator valve 41, the 5th air gauge 42, Four gas thermometers 43, oil sprayer 44；Enter the direct acting of the pulse counter with pneumatic output signal by pneumatic circuit again The air inlet of formula proportion directional control valve 48.Second overflow valve 38 limits air compressor 32, the maximum pressure of air accumulator 35, that is, limits Surely it is tested the maximum pressure of air brake valve dynamic characteristic cylinder drive system 27.

Air brake valve drive device 54 is tested in initial state, in subject air brake valve drive device 54, makes solution-air The upper end of cylinder piston rod stroke adjusting device 56 in solution-air composite cylinder in composite cylinder 55 and the gas in solution-air composite cylinder 55- Cylinder piston rod in liquid composite cylinder is spirally connected；The cylinder piston rod stroke adjustment in solution-air composite cylinder in solution-air composite cylinder 55 The lower end of device 56 is spirally connected with the upper end of piston rod up stroke means for adjusting limit of movement 59 in solution-air composite cylinder.By solution-air composite cylinder 55 In solution-air composite cylinder in the upper end of hydraulic cylinder piston rod stroke adjusting device 57 and solution-air composite cylinder 55 in solution-air be combined Hydraulic cylinder piston rod in cylinder is spirally connected；Hydraulic cylinder piston rod stroke adjustment dress in solution-air composite cylinder in solution-air composite cylinder 55 57 lower ends are put to be spirally connected with the upper end of piston rod up stroke means for adjusting limit of movement 59 in solution-air composite cylinder.Gas in solution-air composite cylinder Cylinder piston rod stroke adjusting device 56 is in parallel with the hydraulic cylinder piston rod stroke adjusting device 57 in solution-air composite cylinder.Solution-air is answered Close piston rod up stroke stopping means of the upper surface of piston rod up stroke means for adjusting limit of movement 59 in cylinder in solution-air composite cylinder 58 lower sections, and contacted with the lower surface of piston rod up stroke stopping means 58 in solution-air composite cylinder.Work in solution-air composite cylinder The lower end of stopper rod down stroke means for adjusting limit of movement 65 is contacted with the subject brake pushrod of air brake valve 26；Piston in solution-air composite cylinder Cylinder piston rod or hydraulic cylinder piston rod of the bar down stroke means for adjusting limit of movement 65 in solution-air composite cylinder 55 move downward arrival During range, the lower end of piston rod down stroke means for adjusting limit of movement 65 in solution-air composite cylinder and the piston in solution-air composite cylinder The upper-end contact of bar down stroke stopping means 66.

Air brake valve static characteristic hydraulic cylinders drive system 67 is tested in initial state, in subject air brake valve static characteristic liquid In cylinder pressure drive system 67, it is in the pilot proportional directional control valve 75 of the control of the closed loop location with main and pilot stage Middle position.Start the volume adjustable hydraulic pump 80 that three-motor 81 drives electro-hydraulic servo control by first shaft coupling 82, electro-hydraulic servo After oil suction, the pressure oil of generation is passed through from hydraulic pressure main fuel tank by the first hydraulic pressure coarse filter 83 for the volume adjustable hydraulic pump 80 of control Cross the first hydraulically-controlled one-way valve 79, with manometric filter 78, first throttle valve 77 after, by fluid pressure line enter with master The middle position of pilot proportional directional control valve 75 that the closed loop location of level and pilot stage is controlled, then the first liquid is entered by fluid pressure line Hydraulic pressure main fuel tank is flowed back to by hydraulic oil-returning pipeline after pressure digital flowmeter 76.Now, the variable delivery hydraulic of electro-hydraulic servo control Pump 80 is in unloading condition.

Brake chamber loading system 103 is tested in initial state, second in brake chamber loading system 103 will be tested It is tested the brake pushrod of the left end of brake chamber piston rod retraction stroke limit adjusting means 105 and the second subject brake chamber 102 Connection.Meanwhile, the left end of the second subject brake chamber piston rod retraction stroke limit adjusting means 105 and the second subject brake chamber The right-hand member of piston rod retraction distance caging device 104 is contacted.By the first subject braking gas being tested in brake chamber loading system 103 The left end of room piston rod retraction stroke limit adjusting means 115 is connected with the brake pushrod of the first subject brake chamber 101.Meanwhile, The left end of first subject brake chamber piston rod retraction stroke limit adjusting means 115 and the first subject brake chamber piston rod are retracted The right-hand member of distance caging device 114 is contacted.Make the closed loop position with main and pilot stage in subject brake chamber loading system 103 The pilot type servo valve 139 for putting control is in middle position；Start the 4th motor 143 by the driving of second shaft coupling 144 with multiple Resultant pressure or flow control unidirectional drive variable pump 145, pass through with composite pressure or flow control unidirectional drive variable pump 145 The pressure oil of generation after oil suction, is passed through second throttle 142, carried by the second hydraulic pressure coarse filter 146 from hydraulic pressure main fuel tank After the filter 141 of optics choke indicator, the second hydraulically-controlled one-way valve 140, entered by fluid pressure line and carry main and guide The middle position of pilot type servo valve 139 of the closed loop location control of level, then hydraulic pressure main fuel tank is flowed back to by hydraulic oil-returning pipeline.Now, Unloading condition is in composite pressure or flow control unidirectional drive variable pump 145.

Tractor-trailer combinatios air braking system is entered in Tractor-trailer combinatios air braking system multipurpose test system During row test, under test mode, operating procedure is as follows：

First, the experiment of Tractor-trailer combinatios air braking system full brake performance, seal tightness test, strenuous test, reliability Experiment and endurancing

In subject air compressor and subject air accumulator test device 1 and in subject air brake valve dynamic characteristic cylinder drivetrain In system 27, the first air pressure of the fast spigot joint the 13, the 5th of air pressure with two check valves with two check valves is set to be intubated soon Joint 37 is off.Start the first motor 2 by belt dressing, the first gearbox 3, dynamometer machine 4, torque meter 5, turn The fast driving of instrument 6 subject air compressor 9.Subject air compressor 9 sucks sky by the first filter 7 with bypass check valve After gas, the compressed air of generation is carried by manual drainage liquid separator 17, the first air pressure digital flowmeter 18, second The fast spigot joint 19 of air pressure, subject air accumulator 20, the 3rd air gauge 21, the third gas thermometer the 22, the 3rd of two check valves Output switching signal can the gas of the atmospheric pressure converter 23 of electrical adjustment, the first overflow valve the 24, the 3rd with two check valves Fast spigot joint 25 is pressed, into the subject air inlet of air brake valve 26.Start the 4th motor 143 to drive by second shaft coupling 144 It is dynamic to control unidirectional drive variable pump 145 with composite pressure or flow.With composite pressure or flow control unidirectional drive variable The pressure oil of generation after oil suction, is passed through second throttle by pump 145 by the second hydraulic pressure coarse filter 146 from hydraulic pressure main fuel tank 142nd, the filter 141 with optics choke indicator, after the second hydraulically-controlled one-way valve 140, by fluid pressure line enter with master The middle position of pilot type servo valve 139 that the closed loop location of level and pilot stage is controlled, then Hydraulic Main oil is flowed back to by hydraulic oil-returning pipeline Case.Start the second motor 28 and air compressor 32 is driven by belt dressing, the second gearbox 29, air compressor 32 passes through After the second suction air of filter 30 with bypass check valve, the cooler by the compressed air of generation Jing Guo liquid cooling 33rd, the 4th with the fast spigot joints 34 of air pressure of two check valves, air accumulator 35, the 4th air gauge 36, the second overflow valve 38, the Six with the fast spigot joints 39 of air pressure of two check valves, Auto-drainage liquid separator 40, inside flow to reversible pressure regulator valve 41, 5th air gauge 42, the 4th gas thermometer 43, oil sprayer 44.The arteries and veins with pneumatic output signal is entered by pneumatic circuit again Rush the air inlet of direct action type proportional directional control valve 48 of counter.Full brake performance testing button is pressed, with pneumatic output letter Number the right-hand member electromagnet of direct action type proportional directional control valve 48 of pulse counter be powered, make the pulse with pneumatic output signal The right position of direct action type proportional directional control valve 48 of counter is in running order.High pressure air with pneumatic output by believing Number the right position of direct action type proportional directional control valve 48 of pulse counter, Pneumatic unidirectional proportional velocity regulating valve 49, pneumatic pilot-operated type it is double Check valve 50, the 4th output switching signal can electrical adjustment atmospheric pressure converter 51, the 6th gas thermometer 52, the 6th gas Table 53, the cylinder rodless cavity into solution-air composite cylinder 55 are pressed, the cylinder rod chamber of solution-air composite cylinder 55 passes through pneumatic pilot-operated type Double check valve 50, the right position of direct action type proportional directional control valve 48 of pulse counter with pneumatic output signal, the 5th gas Thermometer 47, the second air pressure digital flowmeter 46, the first muffler 45 are vented.The cylinder piston rod of solution-air composite cylinder 55 to Lower quick motion, makes subject air brake valve 26 be in full braking state.It is tested air compressor and subject air accumulator test device 1 High pressure air, enter subject brake chamber drive system 89, first by being tested air brake valve 26 and be tested brake chamber 101st, the second subject brake chamber 102.The brake pushrod driving subject brake chamber loading system of first subject brake chamber 101 The piston rod of first subject brake chamber piston rod loading hydraulic cylinder 122 in 103, the braking of the second subject brake chamber 102 is pushed away The piston rod of second subject brake chamber piston rod loading hydraulic cylinder 112, leads in bar driving subject brake chamber loading system 103 Cross the loading of electric-hydraulic proportion pilot operated compound relief valve 135 and carry out the experiment of Tractor-trailer combinatios air braking system full brake performance.Equally, By adjust the pressure value of the first overflow valve 24, press respectively seal tightness test, volumetric efficiency, strenuous test, reliability test and Endurancing testing button, can carry out seal tightness test, volumetric efficiency, strong to Tractor-trailer combinatios air braking system respectively Change experiment, reliability test and endurancing.

2nd, the micro- braking ability test of Tractor-trailer combinatios air braking system

The first air pressure with two check valves is set to insert soon in subject air compressor and subject air accumulator test device 1 Pipe joint 13 is off.Start the first motor 2 by belt dressing, the first gearbox 3, dynamometer machine 4, torque meter 5, The driving subject air compressor 9 of rotational speed meters 6, subject air compressor 9 is sucked by the first filter 7 with bypass check valve After air, the compressed air of generation is passed through into manual drainage liquid separator 17, the first air pressure digital flowmeter 18, the second band There are the fast spigot joints 19 of air pressure of two check valves, subject air accumulator 20, the 3rd air gauge 21, third gas thermometer 22, the Three output switching signals can the atmospheric pressure converter 23 of electrical adjustment, the first overflow valve the 24, the 3rd with two check valves The fast spigot joint 25 of air pressure, into the subject air inlet of air brake valve 26.Start the 4th motor 143 and pass through second shaft coupling 144 Driving becomes with composite pressure or flow control unidirectional drive variable pump 145 with composite pressure or flow control unidirectional drive Pump 145 is measured after oil suction, the pressure oil of generation is throttled by second from hydraulic pressure main fuel tank by the second hydraulic pressure coarse filter 146 After valve 142, the filter 141 with optics choke indicator, the second hydraulically-controlled one-way valve 140, entered by fluid pressure line and carried The middle position of pilot type servo valve 139 of the closed loop location control of main and pilot stage, then Hydraulic Main is flowed back to by hydraulic oil-returning pipeline Fuel tank.Start three-motor 81 drives the volume adjustable hydraulic pump 80 of electro-hydraulic servo control to pass through the first liquid by first shaft coupling 82 Press coarse filter 83 from hydraulic pressure main fuel tank after oil suction, by the pressure oil of generation by the first hydraulically-controlled one-way valve 79, with pressure After the filter 78 of table, first throttle valve 77, micro- braking performance test button is pressed, the closed loop location with main and pilot stage The left end electromagnet of pilot proportional directional control valve 75 of control is powered, and makes the closed loop location control with main and pilot stage The left position of pilot proportional directional control valve 75 is in running order, and pressure oil passes through the closed loop location control with main and pilot stage The left position of pilot proportional directional control valve 75 of system, the first surge unidirectional proportional velocity regulating valve 74, first pilot-operated type that surges are double unidirectional Valve 73, the first output switching signal can electrical adjustment hydraulic pressure converter 72, the first liquid-filled thermometer 71, the first hydralic pressure gauge 70th, the first fast spigot joint 68 of hydraulic pressure with two check valves, into hydraulic cylinder rodless cavity, solution-air in solution-air composite cylinder 55 Hydraulic cylinder rod chamber pressure oil is surged by the second fast spigot joint 69 of hydraulic pressure with two check valves, first in composite cylinder 55 Pilot-operated type double check valve 73, with main and pilot stage closed loop location control the left position of pilot proportional directional control valve 75, First digital hydraulic formula flowmeter 76 flows back to hydraulic pressure main fuel tank.The downward microinching of hydraulic cylinder piston rod in solution-air composite cylinder 55, Subject air brake valve 26 is set to be in on-position.The high pressure compressed for being tested air compressor and subject air accumulator test device 1 is empty Gas, enters subject brake chamber drive system the 89, first subject subject of brake chamber 101, second by being tested air brake valve 26 Brake chamber 102.First quilt in the brake pushrod driving subject brake chamber loading system 103 of first subject brake chamber 101 The piston rod of brake chamber piston rod loading hydraulic cylinder 122 is tried, the brake pushrod driving of the second subject brake chamber 102 is manufactured experimently The piston rod of the second subject brake chamber piston rod loading hydraulic cylinder 112, first by electric-hydraulic proportion in room loading system 103 of taking offence The loading of conduction overflow valve 135 carries out the micro- braking ability test of Tractor-trailer combinatios air braking system.

3rd, Tractor-trailer combinatios air braking system thrust performance is tested

In subject air compressor and subject air accumulator test device 1, make the first air pressure with two check valves fast Spigot joint 13 is off；Start the first motor 2 and pass through belt dressing, the first gearbox 3, dynamometer machine 4, torque meter 5th, the driving of rotational speed meters 6 subject air compressor 9, subject air compressor 9 is inhaled by the first filter 7 with bypass check valve Enter after air, the compressed air of generation is passed through into manual drainage liquid separator 17, the first air pressure digital flowmeter 18, second The fast spigot joint 19 of air pressure with two check valves, subject air accumulator 20, the 3rd air gauge 21, third gas thermometer 22, 3rd output switching signal can the atmospheric pressure converter 23 of electrical adjustment, the first overflow valve the 24, the 3rd with two check valves The fast spigot joint 25 of air pressure, into subject the air inlet of air brake valve 26.Start the 4th motor 143 by second shaft coupling 144 drivings are with composite pressure or flow control unidirectional drive variable pump 145.With composite pressure or flow control unidirectional drive The pressure oil of generation after oil suction, is passed through second section by variable pump 145 by the second hydraulic pressure coarse filter 146 from hydraulic pressure main fuel tank Flow valve 142, the filter 141 with optics choke indicator, after the second hydraulically-controlled one-way valve 140, band is entered by fluid pressure line There is the middle position of pilot type servo valve 139 of the closed loop location control of main and pilot stage, then hydraulic pressure is flowed back to by hydraulic oil-returning pipeline Main fuel tank.Start the volume adjustable hydraulic pump 80 that three-motor 81 drives electro-hydraulic servo control by first shaft coupling 82, by the The pressure oil of generation after oil suction, is passed through the first hydraulically-controlled one-way valve 79, carried by one hydraulic pressure coarse filter 83 from hydraulic pressure main fuel tank After manometric filter 78, first throttle valve 77, the first subject brake chamber 101 and the second subject brake chamber 102 are pressed Thrust performance testing button, the left end of pilot proportional directional control valve 75 electricity of the closed loop location control with main and pilot stage Magnet is powered, and the left position of pilot proportional directional control valve 75 of the closed loop location control with main and pilot stage is in work State.The left position of pilot proportional directional control valve 75 that pressure oil is controlled by closed loop location with main and pilot stage, the One surge unidirectional proportional velocity regulating valve 74, first surge pilot-operated type double check valve 73, the first output switching signal can electrical adjustment The hydraulic pressure of hydraulic pressure converter 72, the first liquid-filled thermometer 71, the first hydralic pressure gauge 70, first with two check valves is intubated soon Joint 68, into hydraulic cylinder rodless cavity in solution-air composite cylinder 55.Hydraulic cylinder rod chamber pressure oil passes through in solution-air composite cylinder 55 Second with two check valves the fast spigot joint 69 of hydraulic pressure, first surge pilot-operated type double check valve 73, with main and guide The left position of pilot proportional directional control valve 75 of the closed loop location control of level, the first digital hydraulic formula flowmeter 76 flow back to Hydraulic Main Fuel tank.The downward microinching of hydraulic cylinder piston rod in solution-air composite cylinder 55, makes subject air brake valve 26 be in on-position.Quilt Examination air compressor and the high pressure air of subject air accumulator test device 1 are braked by being tested air brake valve 26 into subject The subject subject brake chamber 102 of brake chamber 101, second of air chamber drive system 89, first.First subject brake chamber 101 The work of first subject brake chamber piston rod loading hydraulic cylinder 122 in brake pushrod driving subject brake chamber loading system 103 Second subject braking gas in stopper rod, the brake pushrod driving subject brake chamber loading system 103 of the second subject brake chamber 102 The piston rod of room piston rod loading hydraulic cylinder 112, carries out the first subject by the loading of electric-hydraulic proportion pilot operated compound relief valve 135 and brakes The subject brake chamber 102 thrust performance experiment of air chamber 101 and second, i.e. Tractor-trailer combinatios air braking system thrust performance is tried Test.

4th, instrument service condition explanation

Indicate respectively that subject air compressor 9 intake air temperature is tested by first gas thermometer 10, the first air gauge 11 Data and admission pressure test data, at the same the first output switching signal can electrical adjustment atmospheric pressure converter 12 collection quilt The examination air inlet gas pressure data of air compressor 9 inputs to computer.Second output switching signal can electrical adjustment air pressure The collection subject exhaust outlet gas pressure data of air compressor 9 of pressure converter 14 inputs to computer, while the second air gauge 15th, second gas thermometer 16 indicates respectively the subject exhaust outlet gas pressure test data of air compressor 9 and vent Temperature test data.3rd air gauge 21, third gas thermometer 22 indicate respectively subject the pressure testing data of air accumulator 20 and Temperature test data, at the same the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23 collection subject air accumulator 20 Pressure data inputs to computer.Tested by dynamometer machine 4, torque meter 5, rotational speed meters 6, first air pressure digital flowmeter 18 etc. It is tested capacity, shaft power, volumetric ratio energy and the volumetric efficiency of air compressor 9.First overflow valve 24 limits subject air pressure Contracting machine 9, the maximum pressure for being tested air accumulator 20, that is, limit the maximum pressure of subject Tractor-trailer combinatios air braking system.It is logical Cross the 8th gas thermometer 91 and indicate the subject output gas temperature test data of air brake valve 26, the pointer of the 7th air gauge 90 is indicated It is tested the output gas pressure test data of air brake valve 26 and the first subject subject brake chamber 102 of brake chamber 101 and second Air inlet gas pressure test data, at the same the 5th output switching signal can electrical adjustment atmospheric pressure converter 92 collection output Gas pressure data inputs to computer.First displacement transducer 62 and the first force snesor 64 gather subject air brake valve simultaneously 26 push rod run-length datas and thrust data input to computer., can be respectively to dilatory by adjusting the pressure value of the first overflow valve 24 Machine transport unit air braking system carries out resistance to pressure experiment, strenuous test, seal tightness test.Pass through the 9th gas thermometer 95 Indicate that first is tested the intake air temperature test data of brake chamber 101, the test of the 4th air pressure digital flowmeter 93 enters the first quilt The gas flow values of brake chamber 101 are tried, the tenth gas thermometer 100 indicates that second is tested the test of the intake air temperature of brake chamber 102 Data, the 5th air pressure digital flowmeter 97 test enters the second subject gas flow values of brake chamber 102.

Tractor-trailer combinatios air braking system multipurpose test system is in Tractor-trailer combinatios air braking system When single element is tested, operating procedure is as follows：

First, subject air compressor performance and endurancing

To being tested under the test mode of air compressor 9, air compressor and subject air accumulator test device 1 are being tested In, the first fast spigot joint the 13, the 3rd of air pressure with two check valves is carried the fast spigot joint of air pressure of two check valves 25 are off.Change subject air accumulator 20 be standard air accumulator after, start the first motor 2 by belt dressing, First gearbox 3, dynamometer machine 4, torque meter 5, the driving subject air compressor 9 of rotational speed meters 6, subject air compressor 9 pass through the One with bypass check valve filter 7 suction air after, by the compressed air of generation by manual drainage liquid separator 17, First air pressure digital flowmeter 18, second carries the fast spigot joint 19 of air pressure, standard air accumulator, the 3rd gas of two check valves Press table 21, third gas thermometer 22, the 3rd output switching signal can the atmospheric pressure converter 23 of electrical adjustment, the first overflow Valve 24；Indicate respectively that subject air compressor 9 inlet charge temperature is surveyed by first gas thermometer 10, the first air gauge 11 Try data and inlet charge pressure testing data, at the same the first output switching signal can electrical adjustment atmospheric pressure converter The 12 collection subject air inlet gas pressure datas of air compressor 9 input to computer.Second output switching signal can electronics tune The collection subject vent pressure data of air compressor 9 of atmospheric pressure converter 14 of section inputs to computer, while the Two air gauges 15, second gas thermometer 16 indicate respectively the subject vent pressure testing data of air compressor 9 and row Gas port delivery temperature test data.3rd air gauge 21, third gas thermometer 22 indicate respectively that standard reservoir pressure is tested Data and temperature test data, at the same the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23 collection standard storage Gas tank pressure data inputs to computer.Pass through dynamometer machine 4, torque meter 5, rotational speed meters 6, first air pressure digital flowmeter 18 etc. Capacity, shaft power, volumetric ratio energy and the volumetric efficiency of test subject air compressor 9, are tested by using standard air accumulator Sealing.Quilt is carried out by using the subject air compressor and subject air accumulator test device 1 that are replaced by after standard air accumulator Try strenuous test, reliability test and the endurancing of air compressor 9.First overflow valve 24 limits subject air compressor 9th, the maximum pressure of standard air accumulator, that is, limit the maximum pressure of subject air compressor and subject air accumulator test device 1.

2nd, it is tested air accumulator performance test

To being tested under the test mode of air accumulator 20, it is being tested air compressor and is being tested in air accumulator test device 1 Make at the first fast spigot joint 25 of air pressure of the fast spigot joint the 13, the 3rd of air pressure with two check valves with two check valves In off-state.After subject air compressor 9 is changed for standard air compressor, start the first motor 2 and filled by belt Put, the first gearbox 3, dynamometer machine 4, torque meter 5, rotational speed meters 6 driving standard air compressor, standard air compressor passes through the One with bypass check valve filter 7 suction air after, by the compressed air of generation by manual drainage liquid separator 17, First air pressure digital flowmeter 18, second carry two check valves the fast spigot joint 19 of air pressure, into subject air accumulator 20, 3rd air gauge 21, third gas thermometer 22, the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23, One overflow valve 24.Shut down standard air compressor again, the second fast spigot joint 19 of air pressure with two check valves is in disconnected Open state.By adjusting the pressure value of the first overflow valve 24, the resistance to pressure experiment and sealing examination of subject air accumulator 20 are carried out respectively Test.3rd air gauge 21, third gas thermometer 22 indicate respectively the subject pressure testing data of air accumulator 20 and temperature test number According to, at the same the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23 collection subject the pressure data of air accumulator 20 it is defeated Enter to computer.

3rd, it is tested air brake valve dynamic response test

To being tested under the test mode of the dynamic characteristic of air brake valve 26, tested in subject air compressor and subject air accumulator In device 1 and subject air brake valve dynamic characteristic cylinder drive system 27, making the first air pressure with two check valves, intubation connects soon First 13, the 5th fast spigot joint 37 of air pressure with two check valves is off.It is changing subject air compressor 9 Standard air compressor, subject air accumulator 20 be standard air accumulator, first subject brake chamber 101 be the first standard braking gas Room, the second subject brake chamber 102 pass through belt dressing, the first change after the second standard brake chamber, to start the first motor 2 Fast case 3, dynamometer machine 4, torque meter 5, the driving standard air compressor of rotational speed meters 6, standard air compressor is by first with side After the suction air of filter 7 of road check valve, the compressed air of generation is passed through into manual drainage liquid separator 17, the first air pressure Digital flowmeter 18, second with the fast spigot joints 19 of air pressure of two check valves, standard air accumulator, the 3rd air gauge 21, Third gas thermometer 22, the 3rd output switching signal can the atmospheric pressure converter 23 of electrical adjustment, the first overflow valve 24, Three carry the fast spigot joint 25 of air pressure of two check valves, into the subject air inlet of air brake valve 26.Start the 4th motor 143 Unidirectional drive variable pump 145 is controlled with composite pressure or flow by the driving of second shaft coupling 144, with composite pressure or stream Amount control unidirectional drive variable pump 145 by the second hydraulic pressure coarse filter 146 from hydraulic pressure main fuel tank after oil suction, by the pressure of generation Power oil passes through after second throttle 142, the filter 141 with optics choke indicator, the second hydraulically-controlled one-way valve 140 Fluid pressure line enters the middle position of pilot type servo valve 139 of the closed loop location control with main and pilot stage, then is returned by hydraulic pressure Oil pipe line flows back to hydraulic pressure main fuel tank.Start the second motor 28 and air compressor is driven by belt dressing, the second gearbox 29 32, air compressor 32 passes through the compressed air of generation after the second suction air of filter 30 with bypass check valve The cooler the 33, the 4th for crossing liquid cooling carries the fast spigot joint 34 of air pressure, air accumulator 35, the 4th air gauge of two check valves 36th, the second overflow valve the 38, the 6th is with the fast spigot joint 39 of air pressure of two check valves, Auto-drainage liquid separator 40, interior Portion flows to reversible pressure regulator valve 41, the 5th air gauge 42, the 4th gas thermometer 43, oil sprayer 44.Entered again by pneumatic circuit The air inlet of direct action type proportional directional control valve 48 of pulse counter with pneumatic output signal.Press air brake valve dynamic characteristic Testing button, the right-hand member electromagnet of direct action type proportional directional control valve 48 of the pulse counter with pneumatic output signal is powered, Make the right position of direct action type proportional directional control valve 48 of the pulse counter with pneumatic output signal in running order, high pressure pressure Direct action type proportional directional control valve 48 right position of the contracting air by the pulse counter with pneumatic output signal, Pneumatic unidirectional ratio Example flow speed control valve 49, pneumatic pilot-operated type double check valve 50, the 4th output switching signal can electrical adjustment atmospheric pressure converter 51, 6th gas thermometer 52, the 6th air gauge 53, into cylinder rodless cavity in solution-air composite cylinder 55, gas in solution-air composite cylinder 55 The direct action type proportional direction of pulse counter of the cylinder rod chamber by pneumatic pilot-operated type double check valve 50, with pneumatic output signal The right position of control valve 48, the 5th gas thermometer 47, the second air pressure digital flowmeter 46, the first muffler 45 are vented.Solution-air is answered Close cylinder piston rod in cylinder 55 quickly to move downwards, subject air brake valve 26 is in full braking state.It is tested air compressor High pressure air with subject air accumulator test device 1 is by being tested air brake valve 26 into subject brake chamber drive system 89th, the first standard brake chamber, the second standard brake chamber.The brake pushrod driving of first subject brake chamber 101 is manufactured experimently The piston rod of first subject brake chamber piston rod loading hydraulic cylinder 122 in room loading system 103 of taking offence, the second subject braking gas Second subject brake chamber piston rod loading hydraulic cylinder in the brake pushrod driving subject brake chamber loading system 103 of room 102 112 piston rod, dynamic response test is carried out by the loading of electric-hydraulic proportion pilot operated compound relief valve 135.Pass through third gas thermometer 22 indicate the subject intake air temperature test data of air brake valve 26, and the pointer of the 3rd air gauge 21 indicates the subject air inlet pressure of air brake valve 26 Power test data, at the same the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23 collection subject air brake valve 26 Admission pressure data input is to computer.8th gas thermometer 91 indicates the subject output gas temperature test number of air brake valve 26 According to the pointer of the 7th air gauge 90 indicates the subject output gas pressure test data of air brake valve 26, while the 5th output switch is believed Number can electrical adjustment atmospheric pressure converter 92 gather output gas pressure data input to computer.First displacement transducer 62 and first force snesor 64 gather the subject push rod run-length data of air brake valve 26 simultaneously and thrust data inputs to computer.

4th, subject air brake valve static characteristic experiment

To being tested under the test mode of the static characteristic of air brake valve 26, tested in subject air compressor and subject air accumulator In device 1, it is off the first fast spigot joint 13 of air pressure with two check valves.Changing subject air compression Machine 9 be standard air compressor, subject air accumulator 20 be standard air accumulator, first subject brake chamber 101 be the first standard system Take offence after room, the second subject brake chamber 102 be the second standard brake chamber, start the first motor 2 and pass through belt dressing, the One gearbox 3, dynamometer machine 4, torque meter 5, the driving standard air compressor of rotational speed meters 6.Standard air compressor passes through first band Have after the suction air of filter 7 of bypass check valve, the compressed air of generation is passed through into manual drainage liquid separator 17, first Air pressure digital flowmeter 18, second carries the fast spigot joint 19 of air pressure, standard air accumulator, the 3rd air gauge of two check valves 21st, third gas thermometer 22, the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23, the first overflow valve 24th, the 3rd fast spigot joint 25 of air pressure with two check valves, into the subject air inlet of air brake valve 26.Start the 4th electronic Machine 143 controls unidirectional drive variable pump 145 by the driving of second shaft coupling 144 with composite pressure or flow, with compound pressure Power or flow control unidirectional drive variable pump 145 after oil suction, will be produced by the second hydraulic pressure coarse filter 146 from hydraulic pressure main fuel tank Raw pressure oil passes through second throttle 142, the filter 141 with optics choke indicator, the second hydraulically-controlled one-way valve 140 Afterwards, the middle position of pilot type servo valve 139 that the closed loop location with main and pilot stage is controlled is entered by fluid pressure line, then passed through Hydraulic oil-returning pipeline flows back to hydraulic pressure main fuel tank.Start three-motor 81 and electro-hydraulic servo control is driven by first shaft coupling 82 Volume adjustable hydraulic pump 80, after oil suction, passes through from hydraulic pressure main fuel tank by the first hydraulic pressure coarse filter 83 by the pressure oil of generation One hydraulically-controlled one-way valve 79, with manometric filter 78, first throttle valve 77 after, press air brake valve static characteristic test by Button, the left end electromagnet of pilot proportional directional control valve 75 of the closed loop location control with main and pilot stage is powered, and makes band The left position of pilot proportional directional control valve 75 that the closed loop location for having main and pilot stage is controlled is in running order, and pressure oil leads to Cross the left position of pilot proportional directional control valve 75 of the control of the closed loop location with main and pilot stage, first surge unidirectional ratio Flow speed control valve 74, first surge pilot-operated type double check valve 73, the first output switching signal can electrical adjustment hydraulic pressure converter 72nd, the first liquid-filled thermometer 71, the first hydralic pressure gauge 70, first with two check valves the fast spigot joint 68 of hydraulic pressure, into gas- Hydraulic cylinder rod chamber pressure oil carries two lists by second in hydraulic cylinder rodless cavity in liquid composite cylinder 55, solution-air composite cylinder 55 Surged pilot-operated type double check valve 73, the closed loop location control with main and pilot stage to the fast spigot joint 69 of the hydraulic pressure of valve, first The left position of pilot proportional directional control valve 75 of system, the first digital hydraulic formula flowmeter 76 flow back to hydraulic pressure main fuel tank.Solution-air is combined The downward microinching of hydraulic cylinder piston rod in cylinder 55, makes subject air brake valve 26 be in on-position.Be tested air compressor and The high pressure air of air accumulator test device 1 is tested, enters subject brake chamber drive system by being tested air brake valve 26 89th, the first standard brake chamber, the second standard brake chamber.The brake pushrod driving of first subject brake chamber 101 is manufactured experimently The piston rod of first subject brake chamber piston rod loading hydraulic cylinder 122 in room loading system 103 of taking offence, the second subject braking gas Second subject brake chamber piston rod loading hydraulic cylinder in the brake pushrod driving subject brake chamber loading system 103 of room 102 112 piston rod, static characteristic experiment is carried out by the loading of electric-hydraulic proportion pilot operated compound relief valve 135.Pass through third gas thermometer 22 indicate the subject intake air temperature test data of air brake valve 26, and the pointer of the 3rd air gauge 21 indicates the subject air inlet pressure of air brake valve 26 Power test data, at the same the 3rd output switching signal can electrical adjustment atmospheric pressure converter 23 collection admission pressure data it is defeated Enter to computer.8th gas thermometer 91 indicates the subject output gas temperature test data of air brake valve 26, the 7th air gauge 90 pointers indicate subject air brake valve 26 output gas pressure test data, while the 5th output switching signal can electrical adjustment The collection subject output gas pressure data input of air brake valve 26 of atmospheric pressure converter 92 is to computer.First displacement transducer 62 and first force snesor 64 gather the subject push rod run-length data of air brake valve 26 simultaneously and thrust data inputs to computer. When being tested the push rod stroke of air brake valve 26 arrival maximum, experiments of sealing performance can be carried out to subject air brake valve 26.

5th, subject brake chamber thrust performance experiment

Under the test mode to the first subject subject thrust performance of brake chamber 102 of brake chamber 101 and second, in quilt Try in air compressor and subject air accumulator test device 1, make at the first fast spigot joint 13 of air pressure with two check valves In off-state.Change subject air compressor 9 be standard air compressor, subject air accumulator 20 be standard air accumulator, quilt Gas testing brake valve 26 be standard air brake valve after, start the first motor 2 by belt dressing, the first gearbox 3, dynamometer machine 4, Torque meter 5, the driving standard air compressor of rotational speed meters 6, standard air compressor is by the first filtering with bypass check valve After the suction air of device 7, the compressed air of generation is passed through into manual drainage liquid separator 17, the first air pressure digital flowmeter 18th, the second fast spigot joint 19 of air pressure with two check valves, standard air accumulator, the 3rd air gauge 21, third gas temperature Count the 22, the 3rd output switching signal can the atmospheric pressure converter 23 of electrical adjustment, the first overflow valve the 24, the 3rd with two lists To the fast spigot joint 25 of the air pressure of valve, into standard air brake valve air inlet.Start the 4th motor 143 by second shaft coupling 144 drivings are with composite pressure or flow control unidirectional drive variable pump 145, with composite pressure or flow control unidirectional drive The pressure oil of generation after oil suction, is passed through second section by variable pump 145 by the second hydraulic pressure coarse filter 146 from hydraulic pressure main fuel tank Flow valve 142, the filter 141 with optics choke indicator, after the second hydraulically-controlled one-way valve 140, band is entered by fluid pressure line There is the middle position of pilot type servo valve 139 of the closed loop location control of main and pilot stage, then hydraulic pressure is flowed back to by hydraulic oil-returning pipeline Main fuel tank.Start the volume adjustable hydraulic pump 80 that three-motor 81 drives electro-hydraulic servo control by first shaft coupling 82, it is electro-hydraulic to watch The volume adjustable hydraulic pump 80 of control is taken by the first hydraulic pressure coarse filter 83 from hydraulic pressure main fuel tank after oil suction, by the pressure oil of generation After the first hydraulically-controlled one-way valve 79, with manometric filter 78, first throttle valve 77, the first subject brake chamber is pressed 101 and second are tested the thrust performance testing button of brake chamber 102, the guide of the closed loop location control with main and pilot stage The left end electromagnet of formula proportion directional control valve 75 is powered, and makes the pilot proportional of the closed loop location control with main and pilot stage The left position of directional control valve 75 is in running order, the pilot-operated type that pressure oil is controlled by the closed loop location with main and pilot stage The left position of proportion directional control valve 75, the first surge unidirectional proportional velocity regulating valve 74, first pilot-operated type double check valve 73, first that surges are defeated Go out switching signal can the hydraulic pressure converter 72 of electrical adjustment, the first liquid-filled thermometer 71, the first hydralic pressure gauge 70, first carry The fast spigot joint 68 of hydraulic pressure of two check valves, into hydraulic cylinder rodless cavity in solution-air composite cylinder 55, in solution-air composite cylinder 55 Hydraulic cylinder rod chamber pressure oil, it is double by the pilot-operated type that surges of the second fast spigot joint 69 of hydraulic pressure with two check valves, first Check valve 73, with main and pilot stage closed loop location control the left position of pilot proportional directional control valve 75, the first hydraulic pressure Digital flowmeter 76 flows back to hydraulic pressure main fuel tank.The downward microinching of hydraulic cylinder piston rod, makes Standard Gases in solution-air composite cylinder 55 Brake valve is in on-position.The high pressure air of air compressor and subject air accumulator test device 1 is tested, passes through standard Air brake valve enters subject brake chamber drive system 89, first and is tested the subject brake chamber 102 of brake chamber 101, second.The First subject brake chamber piston in the brake pushrod driving subject brake chamber loading system 103 of one subject brake chamber 101 The piston rod of bar loading hydraulic cylinder 122, the brake pushrod driving subject brake chamber loading system of the second subject brake chamber 102 The piston rod of second subject brake chamber piston rod loading hydraulic cylinder 112, passes through electric-hydraulic proportion pilot operated compound relief valve 135 in 103 Loading carries out first and is tested the subject brake chamber 102 thrust performance experiment of brake chamber 101 and second.Pass through the 9th gas temperature Meter 95 indicates that first is tested the intake air temperature test data of brake chamber 101, and the 4th air pressure digital flowmeter 93 tests the first quilt The charge flow value of brake chamber 101 is tried, the tenth gas thermometer 100 indicates that second is tested the test of the intake air temperature of brake chamber 102 Data, the 5th air pressure digital flowmeter 97 test second is tested the charge flow value of brake chamber 102, the pointer of the 7th air gauge 90 Indicate that first is tested the subject air inlet air pressure test data of brake chamber 102 of brake chamber 101 and second, while the 5th output switch Signal can electrical adjustment atmospheric pressure converter 92, collection first be tested brake chamber 101 and second subject brake chamber 102 Input gas pressure data inputs to computer.8th gas thermometer 91 indicates that first is tested the quilt of brake chamber 101 and second Try the air inlet gas temperature test data of brake chamber 102.First displacement transducer 62 and the first force snesor 64 gather mark simultaneously Quasi- air brake valve push rod run-length data and thrust data input to computer.Maximum is reached in standard air brake valve push rod stroke When, experiments of sealing performance can be carried out to the first subject subject brake chamber 102 of brake chamber 101 and second.

Intubation connects first air pressure of the fast spigot joint the 13, the 5th of air pressure with two check valves with two check valves soon First 37 are respectively used to periodically exclude the water in subject air accumulator 20, air accumulator 35.Oil sprayer 44 periodically carries out artificial add and lubricated Oil.

Each part is connected by systematic schematic diagram by the pipeline and seal of different-diameter, is arranged in tractor transporter Various pieces inside and outside group air braking system multipurpose test system, it is multi-functional to meet Tractor-trailer combinatios air braking system The use demand of test device.

Claims (8)

1. Tractor-trailer combinatios air braking system multipurpose test system, including：It is tested air compressor and subject air accumulator Test device（1）, subject air brake valve dynamic characteristic cylinder drive system（27）, subject air brake valve drive device（54）, subject Air brake valve static characteristic hydraulic cylinders drive system（67）, subject air brake valve venting test device（85）, subject brake chamber drive Dynamic system（89）, subject brake chamber loading system（103）；It is characterized in that：It is tested air compressor and subject air accumulator is surveyed Trial assembly is put（1）Installed in left front inside Tractor-trailer combinatios air braking system multipurpose test system, subject air compression Machine（9）And subject air accumulator（20）Installed in subject air compressor and subject air accumulator test device（1）Internal test site On；In subject air compressor and subject air accumulator test device（1）In, intubation connects the 3rd air pressure with two check valves soon Head（25）Right-hand member, it is middle outside Tractor-trailer combinatios air braking system multipurpose test system with being arranged on by pneumatic circuit The subject air brake valve of top（26）Lower end air inlet is connected；It is tested air brake valve dynamic characteristic cylinder drive system（27）It is arranged on Right front inside Tractor-trailer combinatios air braking system multipurpose test system, is tested air brake valve dynamic characteristic cylinder drivetrain System（27）In pneumatic pilot-operated type double check valve（50）Upper right end, is exported by pneumatic circuit and three three-way connections and the 4th Switching signal can electrical adjustment atmospheric pressure converter（51）Air inlet, the 6th gas thermometer（52）Air inlet, the 6th gas Press table（53）Air inlet and installed in subject air brake valve drive device（54）In solution-air composite cylinder（55）Cylinder rodless cavity Connect, pneumatic pilot-operated type double check valve（50）Bottom right-hand member, by pneumatic circuit with being arranged on subject air brake valve drive device （54）In solution-air composite cylinder（55）Cylinder rod chamber connect；It is tested air brake valve drive device（54）Installed in by gas testing Brake valve（26）Surface, and subject air brake valve drive device（54）Center line with subject air brake valve（26）Center line Coaxially, it is tested air brake valve drive device（54）In solution-air composite cylinder in piston rod down stroke means for adjusting limit of movement（65） With subject air brake valve（26）Brake pushrod contact；It is tested air brake valve static characteristic hydraulic cylinders drive system（67）Installed in dragging Right back inside machine drawing transport unit air braking system multipurpose test system；It is tested air brake valve static characteristic Driven by Hydraulic Cylinder system System（67）In first carry two check valves the fast spigot joint of hydraulic pressure（68）Left end, by fluid pressure line with being arranged on subject Air brake valve drive device（54）In solution-air composite cylinder（55）Hydraulic cylinder rodless cavity connect, be tested air brake valve static characteristic Hydraulic cylinders drive system（67）In second carry two check valves the fast spigot joint of hydraulic pressure（69）Left end, passes through fluid pressure line With installed in subject air brake valve drive device（54）In solution-air composite cylinder（55）Hydraulic cylinder rod chamber connect；By gas testing Brake valve venting test device（85）In the middle of outside Tractor-trailer combinatios air braking system multipurpose test system；Quilt Gas testing brake valve venting test device（85）In the 3rd air pressure digital flowmeter（87）Left end, passes through pneumatic circuit and one Three-way connection and the 7th gas thermometer（86）Air inlet, subject air brake valve（26）The exhaust outlet of upper right end is connected；Subject Brake chamber drive system（89）Installed in Tractor-trailer combinatios air braking system multipurpose test system bosom；Subject Brake chamber drive system（89）In the 7th air gauge（90）Air inlet, passes through pneumatic circuit and a three-way connection and subject Air brake valve（26）The gases at high pressure delivery outlet of bottom right-hand member is connected；It is tested brake chamber drive system（89）In the 7th carry The fast spigot joint of air pressure of two check valves（94）Right-hand member, passes through pneumatic circuit and a three-way connection and the 9th gas thermometer （95）Air inlet, the first subject brake chamber（101）Air inlet connect；It is tested brake chamber drive system（89）In the 8th The fast spigot joint of air pressure with two check valves（99）Right-hand member, passes through pneumatic circuit and a three-way connection and the tenth gas temperature Degree meter（100）Air inlet, the second subject brake chamber（102）Air inlet connect；First subject brake chamber（101）Braking Push rod and the second subject brake chamber（102）Brake pushrod side by side parallel arrangement, installed in Tractor-trailer combinatios gas braking System multifunctional test device bosom, and in subject brake chamber drive system（89）Dead astern；It is tested brake chamber Loading system（103）The rear in Tractor-trailer combinatios air braking system multipurpose test system inside, subject braking Air chamber loading system（103）In second subject brake chamber piston rod retraction stroke limit adjusting means（105）, pass through screw thread With the second subject brake chamber（102）Brake pushrod connection；It is tested brake chamber loading system（103）In first manufactured experimently Take offence room piston rod retraction stroke limit adjusting means（115）, pass through screw thread and the first subject brake chamber（101）Braking push away Bar is connected.

2. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Try air compressor and subject air accumulator test device（1）, including：First motor（2）, the first gearbox（3）, dynamometer machine （4）, torque meter（5）, rotational speed meters（6）, first with bypass check valve filter（7）, the first digital display（8）, subject Air compressor（9）, first gas thermometer（10）, the first air gauge（11）, first output switching signal can electrical adjustment Atmospheric pressure converter（12）, first carry two check valves the fast spigot joint of air pressure（13）, the second output switching signal can The atmospheric pressure converter of electrical adjustment（14）, the second air gauge（15）, second gas thermometer（16）, manual drainage liquid point From device（17）, the first air pressure digital flowmeter（18）, second carry two check valves the fast spigot joint of air pressure（19）, subject Air accumulator（20）, the 3rd air gauge（21）, third gas thermometer（22）, the 3rd output switching signal can electrical adjustment air pressure Pressure converter（23）, the first overflow valve（24）, the 3rd carry two check valves the fast spigot joint of air pressure（25）；Will subject sky Air compressor and subject air accumulator test device（1）In the first motor（2）Output shaft, passes through belt dressing and the first speed change Case（3）Input shaft is connected；First gearbox（3）Output shaft passes through support frame and dynamometer machine（4）Input shaft is connected；Dynamometer machine（4） Output shaft passes through support frame and torque meter（5）Input shaft is connected；Torque meter（5）Output shaft passes through support frame and rotational speed meters（6）It is defeated Enter axle connection；Rotational speed meters（6）Output shaft passes through support frame and subject air compressor（9）Input shaft is connected；First with bypass The filter of check valve（7）Upper end gas outlet pneumatic circuit and three three-way connections, successively with first gas thermometer（10） Air inlet, the first air gauge（11）Air inlet, the first output switching signal can electrical adjustment atmospheric pressure converter（12）Enter Gas port, subject air compressor（9）Air inlet is connected；First filter with bypass check valve（7）In gaseous impurity pass Sensor electric wire and the first digital display（8）Connection；First digital display（8）With the first filtering with bypass check valve Device（7）In support frame be fixed on first with bypass check valve filter（7）On；Manual drainage liquid separator（17）It is left Air inlet is held, by pneumatic circuit and three three-way connections successively with being tested air compressor（9）Gas outlet, second gas temperature Meter（16）Air inlet, the second air gauge（15）Air inlet, the second output switching signal can electrical adjustment atmospheric pressure converter （14）Air inlet is connected；First air pressure digital flowmeter（18）Left end air inlet passes through pneumatic circuit and manual drainage liquid point From device（17）Right-hand member gas outlet is connected, the first air pressure digital flowmeter（18）Right-hand member gas outlet, passes through pneumatic circuit and second The fast spigot joint of air pressure with two check valves（19）Left end air inlet is connected；It is tested air accumulator（20）Left end air inlet passes through Pneumatic circuit and the second fast spigot joint of air pressure with two check valves（19）Right-hand member gas outlet is connected, and is tested air accumulator（20） Right-hand member gas outlet carries the fast spigot joint of air pressure of two check valves by pneumatic circuit and the 3rd（25）Left end air inlet is connected； It is tested air accumulator（20）The 3rd air gauge is installed with pipe joint successively in top（21）, third gas thermometer（22）, the 3rd output Switching signal can electrical adjustment atmospheric pressure converter（23）, the first overflow valve（24）；It is tested air accumulator（20）Manage bottom Joint and the first fast spigot joint of air pressure with two check valves（13）Upper end is connected；First air pressure with two check valves Fast spigot joint（13) lower end is connected by pneumatic circuit with drainage pipeline；Intubation connects 3rd air pressure with two check valves soon Head（25）Right-hand member gas outlet passes through pneumatic circuit and subject air brake valve（26）Lower end air inlet is connected.

3. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Valve dynamics cylinder drive system is braked in gas testing（27）, including：Second motor（28）, the second gearbox（29）, second carry Bypass the filter of check valve（30）, the second digital display（31）, air compressor（32）, liquid cooling cooler （33）, the 4th carry two check valves the fast spigot joint of air pressure（34）, air accumulator（35）, the 4th air gauge（36）, the 5th band There is the fast spigot joint of air pressure of two check valves（37）, the second overflow valve（38）, the 6th inserted soon with the air pressure of two check valves Pipe joint（39）, Auto-drainage liquid separator（40）, inside flow to reversible pressure regulator valve（41）, the 5th air gauge（42）, the 4th Gas thermometer（43）, oil sprayer（44）, the first muffler（45）, the second air pressure digital flowmeter（46）, the 5th gas temperature Degree meter（47）, pulse counter with pneumatic output signal direct action type proportional directional control valve（48）, Pneumatic unidirectional ratio Flow speed control valve（49）, pneumatic pilot-operated type double check valve（50）, the 4th output switching signal can electrical adjustment atmospheric pressure converter （51）, the 6th gas thermometer（52）, the 6th air gauge（53）；Air brake valve dynamic characteristic cylinder drive system will be tested（27）In The second motor（28）Output shaft, passes through belt dressing and the second gearbox（29）Input shaft is connected；Second gearbox（29） Output shaft passes through support frame and air compressor（32）Input shaft is connected；Second filter with bypass check valve（30）Outlet Mouth pneumatic circuit and air compressor（32）Air inlet is connected；Second filter with bypass check valve（30）In gas Impurity sensor-use line and the second digital display（31）Connection；Second digital display（31）It is single with bypass by second To the filter of valve（30）In support frame be fixed on second with bypass check valve filter（30）On；Liquid cooling it is cold But device（33）Air inlet passes through pneumatic circuit and air compressor（32）Gas outlet is connected, the cooler of liquid cooling（33）Outlet Mouth passes through pneumatic circuit and the 4th and carries the fast spigot joint of air pressure of two check valves（34）Air inlet is connected；Air accumulator（35）Enter Gas port carries the fast spigot joint of air pressure of two check valves by pneumatic circuit and the 4th（34）Gas outlet is connected, air accumulator（35） Gas outlet carries the fast spigot joint of air pressure of two check valves by pneumatic circuit and the 6th（39）Air inlet is connected；Air accumulator （35）The 4th air gauge is installed with pipe joint successively in top（36）, the second overflow valve（38）, air accumulator（35）Bottom pipe joint With the 5th fast spigot joint of air pressure for carrying two check valves（37）Upper end is connected；5th air pressure with two check valves is inserted soon Pipe joint（37）Lower end is connected by pneumatic circuit with drainage pipeline；Auto-drainage liquid separator（40）Air inlet passes through air pressure Pipeline and the 6th fast spigot joint of air pressure with two check valves（39）Gas outlet is connected, Auto-drainage liquid separator（40） Gas outlet flows to reversible pressure regulator valve by pneumatic circuit and inside（41）Air inlet is connected；Inside flows to reversible pressure regulator valve（41）Go out Gas port by pneumatic circuit and two three-way connections successively with the 5th air gauge（42）Air inlet, the 4th gas thermometer（43）Enter Gas port, oil sprayer（44）Air inlet is connected；The direct action type proportional directional control valve of pulse counter with pneumatic output signal （48）In bottom left end air inlet pass through pneumatic circuit and oil sprayer（44）Gas outlet is connected, the arteries and veins with pneumatic output signal Rush the direct action type proportional directional control valve of counter（48）In bottom right-hand member exhaust outlet connected by pneumatic circuit and one three Head and the 5th gas thermometer（47）Air inlet, the second air pressure digital flowmeter（46）Air inlet is connected, with pneumatic output The direct action type proportional directional control valve of the pulse counter of signal（48）Upper left end gas outlet by pneumatic circuit with it is pneumatic Unidirectional proportional velocity regulating valve（49）Left end gas port is connected, the direct action type proportional direction control of the pulse counter with pneumatic output signal Valve processed（48）Upper right end gas outlet pass through pneumatic circuit and pneumatic pilot-operated type double check valve（50）Bottom left end gas port connect It is logical；Pneumatic pilot-operated type double check valve（50）Upper left end gas port passes through pneumatic circuit and Pneumatic unidirectional proportional velocity regulating valve（49）Right-hand member Gas port is connected, pneumatic pilot-operated type double check valve（50）Upper right end gas port is defeated by pneumatic circuit and three three-way connections and the 4th Go out switching signal can electrical adjustment atmospheric pressure converter（51）Air inlet, the 6th gas thermometer（52）Air inlet, the 6th Air gauge（53）Air inlet, solution-air composite cylinder（55）The rodless cavity of middle cylinder is connected, pneumatic pilot-operated type double check valve（50）Bottom Right-hand member gas port passes through pneumatic circuit and solution-air composite cylinder（55）The rod chamber of middle cylinder is connected；Second air pressure digital flowmeter （46）Gas outlet passes through pneumatic circuit and the first muffler（45）Air inlet is connected.

4. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Valve drive is braked in gas testing（54）, including：Solution-air composite cylinder（55）, cylinder piston rod stroke adjustment in solution-air composite cylinder Device（56）, hydraulic cylinder piston rod stroke adjusting device in solution-air composite cylinder（57）, on piston rod in solution-air composite cylinder Distance caging device（58）, piston rod up stroke means for adjusting limit of movement in solution-air composite cylinder（59）, the first displacement transducer connect Connect adjusting means（60）, the first displacement transducer attachment means（61）, the first displacement transducer（62）, the first force snesor connection Device（63）, the first force snesor（64）, piston rod down stroke means for adjusting limit of movement in solution-air composite cylinder（65）, solution-air it is multiple Close the piston rod down stroke stopping means in cylinder（66）；By solution-air composite cylinder（55）In solution-air composite cylinder in cylinder piston Throw of lever adjusting means（56）Upper end and solution-air composite cylinder（55）In solution-air composite cylinder in cylinder piston rod be spirally connected, gas- Liquid composite cylinder（55）In solution-air composite cylinder in cylinder piston rod stroke adjusting device（56）In lower end and solution-air composite cylinder Piston rod up stroke means for adjusting limit of movement（59）Upper end is spirally connected；By solution-air composite cylinder（55）In solution-air composite cylinder in liquid Pressure cylinder piston throw of lever adjusting means（57）Upper end and solution-air composite cylinder（55）In solution-air composite cylinder in hydraulic cylinder piston Bar is spirally connected, solution-air composite cylinder（55）In solution-air composite cylinder in hydraulic cylinder piston rod stroke adjusting device（57）Lower end with Piston rod up stroke means for adjusting limit of movement in solution-air composite cylinder（59）Upper end is spirally connected；Cylinder piston rod in solution-air composite cylinder Stroke adjusting device（56）With the hydraulic cylinder piston rod stroke adjusting device in solution-air composite cylinder（57）It is in parallel；Solution-air composite cylinder Interior piston rod up stroke means for adjusting limit of movement（59）Piston rod up stroke stopping means of the upper surface in solution-air composite cylinder （58）Lower section, and with the piston rod up stroke stopping means in solution-air composite cylinder（58）Lower surface is contacted；First displacement transducer Connect adjusting means（60）Upper end and the piston rod up stroke means for adjusting limit of movement in solution-air composite cylinder（59）Lower end is spirally connected, the One displacement transducer connects adjusting means（60）Lower end and the first displacement transducer attachment means（61）Upper end is spirally connected；First displacement Connecting device for sensor（61）Lower end simultaneously with the first displacement transducer（62）Upper end and the first force snesor attachment means（63） Upper end is connected in parallel；First force snesor（64）Upper end and the first force snesor attachment means（63）Lower end is connected, and the first power is passed Sensor（64）Lower end and the piston rod down stroke means for adjusting limit of movement in solution-air composite cylinder（65）Upper end is connected；Solution-air composite cylinder Interior piston rod down stroke means for adjusting limit of movement（65）Lower end and subject air brake valve（26）Brake pushrod is contacted；Solution-air is combined Piston rod down stroke stopping means in cylinder（66）Piston rod down stroke means for adjusting limit of movement in solution-air composite cylinder （65）Lower section.

5. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Gas testing brake valve static characteristic hydraulic cylinders drive system（67）, including：First carries the fast spigot joint of hydraulic pressure of two check valves （68）, second carry two check valves the fast spigot joint of hydraulic pressure（69）, the first hydralic pressure gauge（70）, the first liquid-filled thermometer （71）, the first output switching signal can electrical adjustment hydraulic pressure converter（72）, first surge pilot-operated type double check valve （73）, first surge unidirectional proportional velocity regulating valve（74）, with main and pilot stage closed loop location control pilot proportional side To control valve（75）, the first digital hydraulic formula flowmeter（76）, first throttle valve（77）, with manometric filter（78）、 First hydraulically-controlled one-way valve（79）, electro-hydraulic servo control volume adjustable hydraulic pump（80）, three-motor（81）, first shaft coupling （82）, the first hydraulic pressure coarse filter（83）, direct-acting type proportional overflow valve with electromagnet position-force control（84）；Will subject Air brake valve static characteristic hydraulic cylinders drive system（67）In first carry two check valves the fast spigot joint of hydraulic pressure（68）It is left End hydraulic fluid port passes through fluid pressure line and solution-air composite cylinder（55）The rodless cavity of middle hydraulic cylinder is connected, and first with two check valves The fast spigot joint of hydraulic pressure（68）Right-hand member hydraulic fluid port passes through fluid pressure line and three three-way connections and the first hydralic pressure gauge（70）, the first liquid Thermometer（71）, the first output switching signal can electrical adjustment hydraulic pressure converter（72）, first pilot-operated type that surges it is double single To valve（73）Upper left end hydraulic fluid port is connected；Second carries the fast spigot joint of hydraulic pressure of two check valves（69）Left end hydraulic fluid port passes through liquid Pressure pipe road and solution-air composite cylinder（55）The rod chamber of middle hydraulic cylinder is connected, and intubation connects the second hydraulic pressure with two check valves soon Head（69）Right-hand member hydraulic fluid port is surged pilot-operated type double check valve by fluid pressure line and first（73）Bottom left end hydraulic fluid port is connected；First liquid Move unidirectional proportional velocity regulating valve（74）Left end hydraulic fluid port is surged pilot-operated type double check valve by fluid pressure line and first（73）Upper right end Hydraulic fluid port is connected, and first surges unidirectional proportional velocity regulating valve（74）Right-hand member hydraulic fluid port passes through fluid pressure line and closing with main and pilot stage The pilot proportional directional control valve of ring position control（75）The right oil-out in upper end is connected；First surges pilot-operated type double check valve （73）Bottom right-hand member hydraulic fluid port and the pilot proportional directional control valve of the closed loop location control with main and pilot stage（75）On Left oil-out is held to connect；First digital hydraulic formula flowmeter（76）Upper end oil inlet is by fluid pressure line with carrying main and guide The pilot proportional directional control valve of the closed loop location control of level（75）Lower end oil return opening is connected, the first digital hydraulic formula flowmeter （76）Lower end oil-out is connected by fluid pressure line and Hydraulic Main fuel tank；First throttle valve（77）Lower end oil inlet passes through hydraulic tube Road is with carrying manometric filter（78）Upper end oil-out is connected, first throttle valve（77）Upper end oil-out passes through fluid pressure line With the pilot proportional directional control valve of the closed loop location control with main and pilot stage（75）Lower end oil inlet is connected；First Hydraulically-controlled one-way valve（79）Lower end oil inlet passes through fluid pressure line and the volume adjustable hydraulic pump of electro-hydraulic servo control（80）Oil-out connect It is logical, the first hydraulically-controlled one-way valve（79）Upper end oil-out is by fluid pressure line and a three-way connection with carrying manometric filter （78）Lower end oil inlet, the direct-acting type proportional overflow valve with electromagnet position-force control（84）Right-hand member oil inlet is connected；The One shaft coupling（82）Input and three-motor（81）Output shaft is connected, first shaft coupling（82）Output end and electro-hydraulic servo control The volume adjustable hydraulic pump of system（80）Drive shaft is connected；First hydraulic pressure coarse filter（83）Lower end oil inlet passes through fluid pressure line and hydraulic pressure Main fuel tank is connected, the first hydraulic pressure coarse filter（83）Upper end oil-out passes through fluid pressure line and the variable delivery hydraulic of electro-hydraulic servo control Pump（80）Oil inlet connect；The volume adjustable hydraulic pump of electro-hydraulic servo control（80）Leakage hydraulic fluid port pass through fluid pressure line and Hydraulic Main Fuel tank is connected；Direct-acting type proportional overflow valve with electromagnet position-force control（84）Left end oil-out by fluid pressure line with Hydraulic Main fuel tank is connected.

6. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Gas testing brake valve venting test device（85）, including：7th gas thermometer（86）, the 3rd air pressure digital flowmeter（87）、 Second muffler（88）；Air brake valve venting test device will be tested（85）In the 3rd air pressure digital flowmeter（87）Left end Air inlet passes through pneumatic circuit and a three-way connection and the 7th gas thermometer（86）Air inlet, subject air brake valve（26）On The exhaust outlet of portion's right-hand member is connected, the 3rd air pressure digital flowmeter（87）Right-hand member gas outlet passes through pneumatic circuit and the second muffler （88）Air inlet is connected.

7. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Try brake chamber drive system（89）, including：7th air gauge（90）, the 8th gas thermometer（91）, the 5th output switch letter Number can electrical adjustment atmospheric pressure converter（92）, the 4th air pressure digital flowmeter（93）, the 7th with two check valves The fast spigot joint of air pressure（94）, the 9th gas thermometer（95）, the first air pressure check valve（96）, the 5th air pressure digital fluid Meter（97）, the second air pressure check valve（98）, the 8th carry two check valves the fast spigot joint of air pressure（99）, the tenth gas temperature Meter（100）；Air brake valve will be tested（26）The gases at high pressure gas outlet of bottom right-hand member passes through pneumatic circuit and six three-way connections With the 7th air gauge（90）Air inlet, the 8th gas thermometer（91）Air inlet, the 5th output switching signal can electrical adjustments Atmospheric pressure converter（92）Air inlet, the 4th air pressure digital flowmeter（93）Left end gas port, the first air pressure check valve（96） Left end gas port, the 5th air pressure digital flowmeter（97）Left end gas port, the second air pressure check valve（98）Left end gas port is connected；7th The fast spigot joint of air pressure with two check valves（94）Left end gas port passes through pneumatic circuit and a three-way connection and the 4th gas Press digital flowmeter（93）Right-hand member gas port, the first air pressure check valve（96）Right-hand member gas port is connected, and the 7th with two check valves The fast spigot joint of air pressure（94）Right-hand member gas port passes through pneumatic circuit and a three-way connection and the 9th gas thermometer（95）Enter Gas port, the first subject brake chamber（101）Air inlet is connected；8th carries the fast spigot joint of air pressure of two check valves（99）It is left End gas port passes through pneumatic circuit and a three-way connection and the 5th air pressure digital flowmeter（97）Right-hand member gas port, the second air pressure list To valve（98）Right-hand member gas port is connected, and the 8th carries the fast spigot joint of air pressure of two check valves（99）Right-hand member gas port passes through pneumatic tube Road and a three-way connection and the tenth gas thermometer（100）Air inlet, the second subject brake chamber（102）Air inlet is connected； First subject brake chamber（101）Brake pushrod and second subject brake chamber（102）Brake pushrod side by side parallel install.

8. Tractor-trailer combinatios air braking system multipurpose test system according to claim 1, it is characterised in that：Quilt Try brake chamber loading system（103）, including：Second subject brake chamber piston rod retraction distance caging device（104）, second It is tested brake chamber piston rod retraction stroke limit adjusting means（105）, the second force snesor（106）, the second force snesor connect Connection device（107）, second displacement connecting device for sensor（108）, second displacement sensor connection adjusting means（109）, second It is tested brake chamber piston rod and stretches out stroke limit adjusting means（110）, the second subject brake chamber piston rod stretch out stroke limit Position device（111）, second subject brake chamber piston rod loading hydraulic cylinder（112）, second displacement sensor（113）, the first quilt Try brake chamber piston rod retraction distance caging device（114）, the first subject brake chamber piston rod retraction stroke limit regulation Device（115）, the 3rd force snesor（116）, the 3rd force snesor attachment means（117）, triple motion connecting device for sensor （118）, triple motion sensor connection adjusting means（119）, the first subject brake chamber piston rod stretch out stroke limit regulation Device（120）, the first subject brake chamber piston rod stretch out distance caging device（121）, first subject brake chamber piston rod Loading hydraulic cylinder（122）, triple motion sensor（123）, the 3rd carry two check valves the fast spigot joint of hydraulic pressure（124）、 Hydraulic pressure auxiliary fuel tank（125）, guiding one-way valve with back-moving spring（126）, the second digital hydraulic formula flowmeter（127）, Four carry the fast spigot joint of hydraulic pressure of two check valves（128）, second surge unidirectional proportional velocity regulating valve（129）, the 5th carry two The fast spigot joint of hydraulic pressure of individual check valve（130）, the second hydralic pressure gauge（131）, second liquid thermometer（132）, second output open OFF signal can electrical adjustment hydraulic pressure converter（133）, the 3rd digital hydraulic formula flowmeter（134）, electric-hydraulic proportion guide Formula overflow valve（135）, electric-hydraulic proportion pilot operated compound relief valve with electromagnet position-force control and integrated electronic amplifier （136）, surge proportional velocity regulating valve（137）, second surge pilot-operated type double check valve（138）, closed loop with main and pilot stage The pilot type servo valve of position control（139）, the second hydraulically-controlled one-way valve（140）, filter with optics choke indicator （141）, second throttle（142）, the 4th motor（143）, second shaft coupling（144）, control with composite pressure or flow Unidirectional drive variable pump（145）, the second hydraulic pressure coarse filter（146）；Brake chamber loading system will be tested（103）In second It is tested brake chamber piston rod retraction stroke limit adjusting means（105）Left end and the second subject brake chamber（102）Braking Push rod is connected, meanwhile, the second subject brake chamber piston rod retraction stroke limit adjusting means（105）Left end is manufactured experimently with second Take offence room piston rod retraction distance caging device（104）Right-hand member is contacted；Second force snesor（106）Left end and the second subject are braked Air chamber piston rod retraction stroke limit adjusting means（105）Right-hand member is connected, the second force snesor（106）Right-hand member and the second power are sensed Device attachment means（107）Left end is connected；Second displacement connecting device for sensor（108）Left end and the second force snesor attachment means （107）Right-hand member is connected, second displacement connecting device for sensor（108）Right-hand member is connected adjusting means with second displacement sensor simultaneously （109）Left end, second displacement sensor（113）It is connected in parallel；Second subject brake chamber piston rod stretches out stroke limit regulation Device（110）Left end is connected adjusting means with second displacement sensor（109）Right-hand member is connected, the second subject brake chamber piston rod Stretch out stroke limit adjusting means（110）Right-hand member and the second subject brake chamber piston rod loading hydraulic cylinder（112）Piston rod Connection；Second subject brake chamber piston rod stretches out distance caging device（111）Installed in the second subject brake chamber piston rod Stretch out stroke limit adjusting means（110）Right-hand member；Brake chamber loading system will be tested（103）In first subject brake chamber Piston rod retraction stroke limit adjusting means（115）Left end and the first subject brake chamber（101）Brake pushrod connection, together When, the first subject brake chamber piston rod retraction stroke limit adjusting means（115）Left end and the first subject brake chamber piston Bar retraction distance caging device（114）Right-hand member is contacted；3rd force snesor（116）Left end and the first subject brake chamber piston rod Retraction stroke limit adjusting means（115）Right-hand member is connected, the 3rd force snesor（116）Right-hand member and the 3rd force snesor attachment means （117）Left end is connected；Triple motion connecting device for sensor（118）Left end and the 3rd force snesor attachment means（117）Right-hand member Connection, triple motion connecting device for sensor（118）Right-hand member is connected adjusting means with triple motion sensor simultaneously（119）It is left End, triple motion sensor（123）It is connected in parallel；First subject brake chamber piston rod stretches out stroke limit adjusting means （120）Left end is connected adjusting means with triple motion sensor（119）Right-hand member is connected, and the first subject brake chamber piston rod stretches out Stroke limit adjusting means（120）Right-hand member and the first subject brake chamber piston rod loading hydraulic cylinder（122）Piston rod connection； First subject brake chamber piston rod stretches out distance caging device（121）Row is stretched out installed in the first subject brake chamber piston rod Journey means for adjusting limit of movement（120）Right-hand member；Second subject brake chamber piston rod loading hydraulic cylinder（112）Piston rod and the first quilt Try brake chamber piston rod loading hydraulic cylinder（122）Piston rod side by side parallel install；First subject brake chamber（101）System Dynamic push rod and the first subject brake chamber piston rod loading hydraulic cylinder（122）Piston rod be co-axially mounted；Second subject braking gas Room（102）Brake pushrod and second subject brake chamber piston rod loading hydraulic cylinder（112）Piston rod be co-axially mounted；Second Digital hydraulic formula flowmeter（127）Lower end is added by fluid pressure line and two three-way connections with the second subject brake chamber piston rod Carrier fluid cylinder pressure（112）Rod chamber, the first subject brake chamber piston rod loading hydraulic cylinder（122）Rod chamber, the 4th carry two The fast spigot joint of hydraulic pressure of check valve（128）Left end hydraulic fluid port is connected, the second digital hydraulic formula flowmeter（127）Upper end passes through hydraulic pressure Pipeline and the guiding one-way valve with back-moving spring（126）Lower end is connected, hydraulic pressure auxiliary fuel tank（125）Lower end passes through fluid pressure line With the guiding one-way valve with back-moving spring（126）Upper end is connected, hydraulic pressure auxiliary fuel tank（125）Top passes through fluid pressure line and Three carry the fast spigot joint of hydraulic pressure of two check valves（124）Upper end oil inlet is connected；3rd hydraulic pressure with two check valves Fast spigot joint（124）Lower end oil-out is connected by fluid pressure line and Hydraulic Main fuel tank；Second surges unidirectional proportional velocity regulating valve （129）Left end carries the fast spigot joint of hydraulic pressure of two check valves by fluid pressure line and the 4th（128）Right-hand member hydraulic fluid port is connected, the Two surge unidirectional proportional velocity regulating valve（129）Right-hand member is surged pilot-operated type double check valve by fluid pressure line and second（138）Top is left Hydraulic fluid port is held to connect；5th carries the fast spigot joint of hydraulic pressure of two check valves（130）Left end hydraulic fluid port passes through fluid pressure line and two Three-way connection and the second subject brake chamber piston rod loading hydraulic cylinder（112）Rodless cavity, the first subject brake chamber piston rod Loading hydraulic cylinder（122）Rodless cavity, the guiding one-way valve with back-moving spring（126）Upper end control port is connected, the 5th band There is the fast spigot joint of hydraulic pressure of two check valves（130）Right-hand member passes through fluid pressure line and four three-way connections and the second hydralic pressure gauge （131）Oil inlet, second liquid thermometer（132）Oil inlet, the second output switching signal can electrical adjustment hydraulic pressure turn Parallel operation（133）Oil inlet, surge proportional velocity regulating valve（137）Upper end oil inlet, second are surged pilot-operated type double check valve（138）Bottom Left end hydraulic fluid port is connected；Electric-hydraulic proportion pilot operated compound relief valve（135）Right-hand member oil inlet passes through fluid pressure line and the proportional velocity regulating valve that surges （137）Lower end oil-out is connected, electric-hydraulic proportion pilot operated compound relief valve（135）Left end oil-out passes through fluid pressure line and the 3rd hydraulic pressure Digital flowmeter（134）Upper end oil inlet is connected；3rd digital hydraulic formula flowmeter（134）Lower end oil-out passes through hydraulic tube Road is connected with Hydraulic Main fuel tank；Second surges pilot-operated type double check valve（138）Upper right end hydraulic fluid port is by fluid pressure line with carrying The pilot type servo valve of the closed loop location control of main and pilot stage（139）The right oil-out in upper end connect, second surges guide Formula double check valve（138）The guide that bottom right-hand member hydraulic fluid port is controlled by fluid pressure line with the closed loop location with main and pilot stage Formula servo valve（139）The left oil-out in upper end connect；The pilot type servo valve of closed loop location control with main and pilot stage （139）Lower end oil return opening is connected by fluid pressure line and Hydraulic Main fuel tank, the closed loop location control with main and pilot stage Pilot type servo valve（139）Lower end leaks hydraulic fluid port and connected by fluid pressure line and Hydraulic Main fuel tank；Second hydraulically-controlled one-way valve（140） The pilot type servo valve that upper end oil-out is controlled by fluid pressure line with the closed loop location with main and pilot stage（139）Lower end Oil inlet is connected, the second hydraulically-controlled one-way valve（140）Lower end oil inlet is by fluid pressure line and a three-way connection with carrying main The pilot type servo valve controlled with the closed loop location of pilot stage（139）Lower end control port, the mistake with optics choke indicator Filter（141）Upper end oil-out is connected；Filter with optics choke indicator（141）Lower end oil inlet passes through fluid pressure line With two three-way connections and the electric-hydraulic proportion pilot operated compound relief valve with electromagnet position-force control and integrated electronic amplifier （136）Right-hand member oil inlet, second throttle（142）Upper end oil-out, with composite pressure or flow control unidirectional drive variable Pump（145）Oil circuit is controlled to connect；With composite pressure or flow control unidirectional drive variable pump（145）Upper end oil-out passes through liquid Pressure pipe road and second throttle（142）Lower end oil inlet is connected, with composite pressure or flow control unidirectional drive variable pump （145）Hydraulic fluid port is leaked to connect by fluid pressure line and Hydraulic Main fuel tank；Put with electromagnet position-force control and integrated electronic The electric-hydraulic proportion pilot operated compound relief valve of big device（136）Left end oil-out is connected by fluid pressure line and Hydraulic Main fuel tank；Second Axle device（144）Input and the 4th motor（143）Output shaft is connected, second shaft coupling（144）Output end with compound with pressing Power or flow control unidirectional drive variable pump（145）Drive shaft is connected；Second hydraulic pressure coarse filter（146）Upper end oil-out passes through Fluid pressure line with composite pressure or flow with controlling unidirectional drive variable pump（145）Lower end oil inlet is connected, and the second hydraulic pressure is thick Filter（146）Lower end oil inlet is connected by fluid pressure line and Hydraulic Main fuel tank.