CN204330341U - A kind of hydraulic analog proving installation and system thereof - Google Patents
A kind of hydraulic analog proving installation and system thereof Download PDFInfo
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- CN204330341U CN204330341U CN201420721686.9U CN201420721686U CN204330341U CN 204330341 U CN204330341 U CN 204330341U CN 201420721686 U CN201420721686 U CN 201420721686U CN 204330341 U CN204330341 U CN 204330341U
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Abstract
The utility model relates to hydraulic test field, disclose a kind of hydraulic analog proving installation and system thereof, a kind of hydraulic analog proving installation, comprise pneumatic triple piece, described pneumatic triple piece is communicated with three position five-way valve, described three position five-way valve is communicated with cylinder, described cylinder is communicated with vacuum servo pump assembly, described vacuum servo pump assembly is communicated with ABS assembly, described vacuum servo pump assembly is communicated with vacuum tank, described vacuum tank connects vacuum pump, described ABS assembly is communicated with four brake caliper assys, the pipeline be communicated with between described cylinder with vacuum servo pump assembly is provided with pressure transducer.The utility model can do checking work in earlier stage for the vehicle calibrating of ABS assembly, and shows the effect of coupling intuitively, and the vehicle calibrating for the later stage provides Technical Reference, reduces the workload of vehicle calibrating, reduces development cost, shortens the development time.
Description
Technical field
The utility model relates to proving installation, and particularly related to a kind of hydraulic analog proving installation, the utility model is provided with a kind of simulated testing system, particularly relates to a kind of hydraulic analog test macro.
Background technology
At present when doing the vehicle match of ABS assembly, due to ABS coupling cannot be carried out to the brake system of different automobile types in the lab, and owing to there is no the Technical Reference in early stage, need on real vehicle, fill ABS assembly and the test carrying out series of complex just can know the effect of coupling, such test needs to do a large amount of tests to collect a large amount of data, the shortcomings such as therefore development cost are high, and the construction cycle is long, testing efficiency is low.
Summary of the invention
The utility model is high for development cost in prior art, the shortcomings such as the construction cycle is long, testing efficiency is low, provide and a kind ofly very easily for the vehicle coupling of ABS provides corresponding parameter, and can show a kind of ABS hydraulic analog proving installation and the system thereof of the effect of coupling intuitively.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of hydraulic analog proving installation, comprise pneumatic triple piece, described pneumatic triple piece is communicated with three position five-way valve, described three position five-way valve is communicated with cylinder, and described cylinder is communicated with vacuum servo pump assembly, and described vacuum servo pump assembly is communicated with ABS assembly, described ABS assembly is communicated with vacuum servo pump assembly, described vacuum servo pump assembly is communicated with vacuum tank, and described ABS assembly is communicated with at least one brake caliper assy, and the pipeline be communicated with between described cylinder with vacuum servo pump assembly is provided with pressure transducer.
In whole proving installation, compressed air source enters pneumatic triple piece by pipeline, pneumatic triple piece carries out pressure regulation and voltage stabilizing to the pressurized air sent in compressed air source, three position five-way valve is arrived by pipeline after air-source pressure is stable, three position five-way valve is provided with two outlets, two outlets are interconnected with cylinder respectively, pressurized air is injected ante-chamber and the back cavity of cylinder by three position five-way valve respectively, when pressurized air injects ante-chamber, because the pressure of ante-chamber increases, cylinder push piece advances to vacuum servo pump assembly direction, thus promote vacuum servo pump assembly, what now simulate is the action brake stepped on by the brake pedal of vehicle, when pressurized air injects back cavity, cylinder push piece promotes toward ante-chamber, thus vacuum servo pump assembly is set back, namely the action of the brake pedal return of now simulating brakes releasing action, vacuum tank vacuumizes by vacuum pump, by pipeline, vacuum tank is connected with vacuum servo pump assembly again, thus provide a vacuum source for vacuum servo pump assembly, simulating vehicle engine is to the vacuum action of vacuum servo pump assembly, pressure transducer can measure the thrust of cylinder, namely the power that touches on the brake of people.
Pneumatic triple piece is a kind of a kind of device air strainer, reduction valve and oil sprayer simultaneously completed, and it is clean that air strainer is used for source of the gas, can moisture in filtering compressed air, avoids moisture with gas access to plant.Reduction valve can carry out pressure regulation and voltage stabilizing to source of the gas, makes source of the gas be in steady state, can reduce because of the damage to the hardware such as valve or actuator during source of the gas pressure fluctuations.Oil sprayer can lubricate body movement parts, can lubricate, greatly extend the serviceable life of body to the parts of inconvenient apply oil.
As preferably, the pipeline that described vacuum servo pump assembly is communicated with ABS assembly is provided with the first hydraulic pressure transducer, described brake caliper assy is provided with the second hydraulic pressure transducer, described ABS assembly is provided with displacement transducer and current sensor, and described vacuum tank is provided with vacuum meter and vacuum sensor.The pipeline that vacuum servo pump assembly is communicated with ABS assembly is provided with hydraulic pressure transducer, and described brake caliper assy is provided with the second hydraulic pressure transducer, and the first hydraulic pressure transducer is the hydraulic coupling of test fluid vacuum servo pump assembly and the hydraulic coupling of brake caliper assy respectively.When the work of ABS assembly tested respectively by displacement transducer and current sensor, the displacement of its inner accumulator piston and the size of current of ABS piston pump motor.Vacuum meter can read the size of vacuum tightness, and vacuum values size is then fed back to host computer by capture card by vacuum sensor, thus forms a closed-loop control, makes vacuum tightness maintain about 66.7 ± 1.3Kpa.
As preferably, described three position five-way valve is provided with the first outlet and second and exports, and described cylinder is provided with front cylinder and rear cylinder, cylinder before described first outlet, cylinder after the second outlet.Pressurized air is injected ante-chamber and the back cavity of cylinder by three position five-way valve respectively, and when pressurized air injects ante-chamber, cylinder pushes away forward, thus promotes vacuum servo pump assembly, and what now simulate is the action brake stepped on by the brake pedal of vehicle; When pressurized air injects back cavity, cylinder is drawn back, vacuum servo pump assembly is set back, the action of the action brake releasing of simulating brake pedal return, vacuum tank vacuumizes by vacuum pump, be connected with vacuum servo pump assembly by vacuum tank by pipeline, thus provide a vacuum source for vacuum servo pump assembly, simulating vehicle engine is to the vacuum action of vacuum servo pump assembly.
As preferably, described three position five-way valve is communicated with throttling valve.Throttling valve carrys out adjusting gas flow by regulating circulation area, what install in the utility model is exhaust shutter, exhaust shutter is arranged on the exhaust ports of system, the movement velocity of executive component can not only be controlled, and generally also with noise elimination device, there is the effect reducing exhaust noise, so be often called exhausting silencer throttling valve.
As preferably, described pneumatic triple piece is provided with the pipeline receiving compressed air source, and described pipeline is provided with valve.
As preferably, the pipeline that described pneumatic triple piece is communicated with three position five-way valve is provided with the first anti-shock pressure meter.Pressure on the pipeline that anti-shock pressure meter measurement gas is communicated with three position five-way valve pneumatic triple piece.
As preferably, described brake caliper assy is provided with outlet line, and outlet line is provided with vent valve, and the end of outlet line is provided with oil filter, and oil filter cooperatively interacts with fuel tank.Brake fluid is drained in fuel tank by oil filter, can again utilize.
As preferably, the pipeline that described vacuum servo pump assembly is communicated with ABS assembly is provided with the second anti-shock pressure meter.Anti-shock pressure meter measures the pressure on pipeline that brake fluid is communicated with ABS assembly vacuum servo pump assembly.
The system that a kind of hydraulic analog proving installation realizes, described first hydraulic pressure transducer, second hydraulic pressure transducer, pressure transducer, displacement transducer, current sensor and vacuum sensor connection data collecting unit respectively, described data acquisition unit connects host computer or computing machine, host computer or computing machine connect Driver Card, described Driver Card connects described three position five-way valve respectively, described vacuum pump and described ABS assembly, described first hydraulic pressure transducer, second hydraulic pressure transducer, pressure transducer, displacement transducer, current sensor is connected power supply unit respectively with vacuum sensor.
Compressed air source enters pneumatic triple piece by pipeline, pneumatic triple piece carries out voltage stabilizing and pressure regulation to the pressurized air sent in compressed air source, three position five-way valve is arrived by pipeline after air-source pressure is stable, three position five-way valve is provided with two outlets, two outlets are interconnected with cylinder respectively, pressurized air is injected ante-chamber and the back cavity of cylinder by the action controlling three position five-way valve by host computer respectively, when pressurized air injects ante-chamber, because the pressure of ante-chamber increases, cylinder push piece advances to vacuum servo pump assembly direction, thus promote vacuum servo pump assembly, what now simulate is the action brake stepped on by the brake pedal of vehicle, when pressurized air injects back cavity, cylinder push piece promotes toward ante-chamber, thus vacuum servo pump assembly is set back, namely the action of the brake pedal return of now simulating is exactly that action is removed in brake, vacuum tank vacuumizes by vacuum pump, be connected with vacuum servo pump assembly by vacuum tank by pipeline, thus provide a vacuum source for vacuum servo pump assembly, simulating vehicle engine is to the vacuum action of vacuum servo pump assembly.When cylinder advances to vacuum servo pump assembly, can produce a power, now pressure transducer can measure the thrust of cylinder, namely the power that touches on the brake of people.Vacuum pump is utilized to be evacuated by vacuum tank, by pipeline, vacuum tank is connected with vacuum servo pump assembly again, vacuum tank provides a vacuum source for vacuum servo pump assembly, what now simulate is the vacuum action of vehicle motor to vacuum servo pump assembly, vacuum meter can read the size of vacuum tightness, vacuum values size is then fed back to host computer by capture card by vacuum sensor, thus forms a closed-loop control, makes vacuum tightness maintain about 66.7 ± 1.3Kpa.
The utility model, owing to have employed above technical scheme, has significant technique effect:
The utility model can do checking work in earlier stage for the vehicle calibrating of ABS assembly, and shows the effect of coupling intuitively, and the vehicle calibrating for the later stage provides Technical Reference, reduces the workload of vehicle calibrating, reduces development cost, shortens the development time.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is proving installation figure of the present utility model;
Fig. 2 is system construction drawing of the present utility model.
Label declaration: 1-compressed air source, 2-valve, 3-pneumatic triple piece, 4-throttling valve, 5-three position five-way valve, 51-the first outlet, 52-the second outlet, 61-the first anti-shock pressure meter, 62-the second anti-shock pressure meter, 7-cylinder, 71-front cylinder, 72-rear cylinder, 8-pressure transducer, 9-vacuum servo pump assembly, 10-displacement transducer, 11-current sensor, 12-ABS assembly, 131-the first hydraulic pressure transducer, 132-the second hydraulic pressure transducer, 133-the three hydraulic pressure transducer, 134-the four hydraulic pressure transducer, 135-the five hydraulic pressure transducer, 14-brake caliper assy, 142-the second brake caliper assy, 143-the three brake caliper assy, 144-the four brake caliper assy, 15-vent valve, 152-second row air valve, 153-the three vent valve, 154-the four vent valve, the filter of 16-oil, 17-fuel tank.
Embodiment
Be described in further detail the utility model below in conjunction with embodiment, following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment 1:
A kind of hydraulic analog proving installation, as shown in Figure 1, comprise pneumatic triple piece 3, pneumatic triple piece 3 is provided with admission line, air-source enters in pneumatic triple piece 3 by admission line, and pneumatic triple piece 3 is a kind of a kind of devices air strainer, reduction valve and oil sprayer simultaneously completed, and air strainer is used for cleaning source of the gas, can moisture in filtering compressed air, avoid moisture with gas access to plant.Reduction valve can carry out voltage stabilizing to source of the gas, source of the gas is made to be in steady state, can reduce because of the damage to the hardware such as valve or actuator during source of the gas pressure fluctuations, oil sprayer can lubricate body movement parts, can lubricate the parts of inconvenient apply oil, greatly extend the serviceable life of body, the air outlet duct of pneumatic triple piece 3 is communicated with the air intake opening of three position five-way valve 5, three position five-way valve 5 is arrived by pipeline after air-source pressure is stable, three position five-way valve 5 is provided with two outlets, two outlets are interconnected with cylinder 7 respectively, cylinder 7 is communicated with vacuum servo pump assembly 9, vacuum servo pump assembly 9 is communicated with ABS assembly 12, vacuum servo pump assembly 9 is communicated with vacuum tank 19, vacuum tank 19 connects vacuum pump 18, ABS assembly 12 is communicated with at least one brake caliper assy 14, the pipeline be communicated with between cylinder 7 with vacuum servo pump assembly 9 is provided with pressure transducer 8, whole motion process is: pressurized air is injected ante-chamber and the back cavity of cylinder 7 by three position five-way valve 5 respectively, when pressurized air injects ante-chamber, because the pressure of cylinder 7 ante-chamber increases, cylinder 7 push piece advances to vacuum servo pump assembly 9 direction, thus promote vacuum servo pump assembly 9, what now simulate is the action brake stepped on by the brake pedal of vehicle, when pressurized air injects cylinder 7 back cavity, cylinder 7 push piece promotes toward ante-chamber, thus vacuum servo pump assembly 9 is set back, namely the action of the brake pedal return of now simulating is exactly that action is removed in brake, vacuum tank 19 vacuumizes by vacuum pump 18, by pipeline, total to vacuum tank 19 and vacuum booster pump 9 one-tenth are connected again, thus provide a vacuum source for vacuum servo pump assembly 9, simulating vehicle engine is to the vacuum action of vacuum servo pump assembly, and vacuum tank 19 is provided with vacuum meter 20 and vacuum sensor 21.Vacuum meter 20 can read the size of vacuum tightness, and vacuum values size is fed back to host computer by capture card by vacuum sensor 21, thus forms a closed-loop control, makes vacuum tightness maintain about 66.7 ± 1.3Kpa.
Embodiment 2:
A kind of hydraulic analog proving installation, as shown in Figure 1, comprise pneumatic triple piece 3, pneumatic triple piece 3 is provided with admission line, air-source enters in pneumatic triple piece 3 by admission line, and pneumatic triple piece 3 is a kind of a kind of devices air strainer, reduction valve and oil sprayer simultaneously completed, and air strainer is used for cleaning source of the gas, can moisture in filtering compressed air, avoid moisture with gas access to plant.Reduction valve can carry out voltage stabilizing to source of the gas, source of the gas is made to be in steady state, can reduce because of the damage to the hardware such as valve or actuator during source of the gas pressure fluctuations, oil sprayer can lubricate body movement parts, can lubricate the parts of inconvenient apply oil, greatly extend the serviceable life of body, the air outlet duct of pneumatic triple piece 3 is communicated with the air intake opening of three position five-way valve 5, three position five-way valve 5 is arrived by pipeline after air-source pressure is stable, three position five-way valve 5 is provided with two outlets, two outlets are interconnected with cylinder 7 respectively, cylinder 7 is communicated with vacuum servo pump assembly 9, vacuum servo pump assembly 9 is communicated with ABS assembly 12, vacuum servo pump assembly 9 is communicated with vacuum tank 19, vacuum tank 19 connects vacuum pump 18, ABS assembly 12 is communicated with at least one brake caliper assy 14, the pipeline be communicated with between cylinder 7 with vacuum servo pump assembly 9 is provided with pressure transducer 8, pressure transducer 8 can measure the thrust of cylinder, the namely power that touches on the brake of people.Whole motion process is: pressurized air is injected ante-chamber and the back cavity of cylinder 7 by three position five-way valve 5 respectively, when pressurized air injects ante-chamber, because the pressure of cylinder 7 ante-chamber increases, cylinder 7 push piece advances to vacuum servo pump assembly 9 direction, thus promote vacuum servo pump assembly 9, what now simulate is the action brake stepped on by the brake pedal of vehicle; When pressurized air injects cylinder 7 back cavity, cylinder 7 push piece promotes toward ante-chamber, thus vacuum servo pump assembly 9 is set back, namely the action of the brake pedal return of now simulating is exactly that action is removed in brake, vacuum tank 19 vacuumizes by vacuum pump 18, be connected with vacuum servo pump assembly 9 one-tenth by vacuum tank 19 by pipeline, thus provide a vacuum source for vacuum servo pump assembly, simulating vehicle engine is to the vacuum action of vacuum servo pump assembly.
The pipeline that vacuum servo pump assembly 9 is communicated with ABS assembly 12 is provided with the first hydraulic pressure transducer 131, brake caliper assy 14 is provided with the second hydraulic pressure transducer 132, described ABS assembly 12 is provided with displacement transducer 10 and current sensor 11, first hydraulic pressure transducer 131 and the second hydraulic pressure transducer 132 be the hydraulic coupling of test fluid vacuum servo pump assembly 9 and the hydraulic coupling of brake caliper assy 14 respectively, displacement transducer 10 and current sensor 11 test ABS assembly 12 when working respectively, the displacement of its inner accumulator piston and the size of current of ABS piston pump motor, vacuum tank 19 is provided with vacuum meter 20 and vacuum sensor 21.Vacuum meter 20 can read the size of vacuum tightness, and vacuum values size is fed back to host computer by capture card by vacuum sensor 21, thus forms a closed-loop control, makes vacuum tightness maintain about 66.7 ± 1.3Kpa.
Three position five-way valve 5 is provided with the first outlet 51 and second and exports 52, and cylinder 7 is provided with front cylinder 71 and rear cylinder 72, first and export 51 and is communicated with front cylinder 71, second and exports 52 and be communicated with cylinder 72 afterwards, and three position five-way valve 5 is communicated with throttling valve 4.
Pneumatic triple piece 3 is provided with the pipeline receiving compressed air source 1, and pipeline is provided with valve 2.Valve 2 is used for controlling the circulation of gas, at this, the valve 2 that the utility model is selected is hand guiding valves, hand guiding valve is the manual guiding valve of a kind of two-position three way, often connects and is used as gas source switch in the duct, while source of the gas is closed, air pressure in pneumatic system that is emptying, hand guiding valve is a kind of pipe body structure of two-bit triplet manually-operated gate, and there is a cover in outside, and this cover that slides can realize the break-make of gas.
The pipeline that pneumatic triple piece 3 is communicated with three position five-way valve 5 is provided with the first anti-shock pressure meter 61, and the pipeline that vacuum servo pump assembly 9 is communicated with ABS assembly 12 is provided with the second anti-shock pressure meter 62.Pressure on the pipeline that pressure respectively on the pipeline that is communicated with three position five-way valve pneumatic triple piece of measurement gas of first anti-shock pressure meter 61 and the second anti-shock pressure meter 62 and brake fluid are communicated with ABS assembly 12 vacuum servo pump assembly 9.
Brake caliper assy 14 is provided with outlet line, and outlet line is provided with vent valve 15, and the end of outlet line is provided with oil filter 16, and oil filter 16 cooperatively interacts with fuel tank 17.If when ABS assembly 12 is connected with multiple brake caliper assy 14, multiple brake caliper assy 14 pipeline adopts juxtaposition arrangement, in order to economy system, multiple brake caliper assy 14 connects an oil filter 16, mailbox 17 is provided with below oil filter 16, brake fluid is drained in fuel tank 17 by oil filter 16, as shown in Figure 1, it is the structural drawing of the pipeline employing parallel way at 4 brake caliper assy places in figure, brake caliper assy 14 is provided with the second hydraulic pressure transducer 132, braking sensor 14 connects vent valve 15, and vent valve 15 connects oil filter 16; Second brake caliper assy 142 is provided with the 3rd hydraulic pressure transducer 133, second braking sensor 142 and connects second row air valve 152, and second row air valve 152 connects oil filter 16; 3rd brake caliper assy 143 is provided with the 4th hydraulic pressure transducer the 134, three braking sensor 143 and connects the 3rd vent valve 153, ranked third air valve 153 and connects oil filter 16; 4th brake caliper assy 144 is provided with the 5th hydraulic pressure transducer 135,4th braking sensor 144 connects the 4th vent valve the 154, four vent valve 154 and connects oil filter 16, is provided with mailbox 17 below oil filter 16, brake fluid is drained in fuel tank 17 by oil filter 16, can again utilize.
Based on a kind of hydraulic analog test macro that a kind of hydraulic analog proving installation realizes, first hydraulic pressure transducer 131, second hydraulic pressure transducer 132, pressure transducer 8, displacement transducer 10, current sensor 11 and vacuum sensor 21 connection data collecting unit respectively, data acquisition unit connects host computer or computing machine, host computer or computing machine connect Driver Card, Driver Card connects three position five-way valve 5 respectively, vacuum pump 18 and ABS assembly 12, first hydraulic pressure transducer 131, second hydraulic pressure transducer 132, pressure transducer 8, displacement transducer 10, current sensor 11 is connected power supply unit respectively with vacuum sensor 21.In the present embodiment, select 4 road brake caliper assys in parallel, brake caliper assy 14 is provided with the second hydraulic pressure transducer 132, and braking sensor 14 connects vent valve 15, and vent valve 15 connects oil filter 16; Second brake caliper assy 142 is provided with the 3rd hydraulic pressure transducer 133, second braking sensor 142 and connects second row air valve 152, and second row air valve 152 connects oil filter 16; 3rd brake caliper assy 143 be provided with the 4th hydraulic pressure transducer the 134, three braking sensor 143 connect the 3rd vent valve the 153, three vent valve 153 connect oil filter 16; 4th brake caliper assy 144 is provided with the 5th hydraulic pressure transducer 135,4th braking sensor 144 connects the 4th vent valve the 154, four vent valve 154 and connects oil filter 16, is provided with mailbox 17 below oil filter 16, brake fluid is drained in fuel tank 17 by oil filter 16, can again utilize.First hydraulic pressure transducer 131, second hydraulic pressure transducer 132, the 3rd hydraulic pressure transducer 133, the 4th hydraulic pressure transducer 134, the 5th hydraulic pressure transducer 135 connection data collecting unit respectively, data acquisition unit sends host computer or computing machine to the data received, and host computer or computing machine process data.
System Working Principle: first ABS assembly 12, vacuum servo pump assembly 914 and brake caliper assy are in place, after assembling, first will be exhausted action to system, thus guarantees to there is not bubble in the pipeline of whole system.Host computer controls vacuum pump 18 by Driver Card and works, vacuum tank 19 is vacuumized, when after the vacuum tightness reaching needs, control three position five-way valve 5 action by Driver Card again, make cylinder 7 carry out the action released and retreat, to simulate the action that people touches on the brake, brake fluid in its oil can is pressed in ABS assembly 12 by fluid pressure line by vacuum servo pump assembly 9, by ABS assembly 12, brake fluid is entering in the middle of brake caliper assy 14, thus realizes the action of brake.By arranging piston pump motor speed governing cycle and the duty cycle parameters of ABS assembly 12 in host computer, and the correlation parameter such as action of pressure charging valve and reduction valve in ABS assembly 12, run and valve events by the motor in Driver Card control ABS assembly 12 again, during system works, by gathering the hydraulic coupling in vacuum servo pump assembly and the hydraulic coupling in brake caliper assy, the thrust of cylinder is gathered by pressure transducer 8, ram pump size of current in ABS assembly 12 and accumulator piston displacement is gathered respectively by current sensor 11 and displacement transducer 10, data collection module gathers the data that the first hydraulic coupling sensor 131 and the second hydraulic coupling sensor 132 and current sensor 11 and displacement transducer 11 and pressure transducer 8 gather again, after collection, data are processed, and ram pump size of current and accumulator piston displacement are sampled, then lines are drawn out, the speed governing cycle of piston pump motor is determined according to the situation of lines reaction, the parameters such as dutycycle, and can judge whether the parameters such as the action of pressure charging valve reduction valve meet current mated vacuum booster pump total 9 one-tenth and brake caliper assy 14, thus for vehicle calibrating provide early stage reference.
Principle of work: compressed air source 1 is by hand guiding valve 2 and pneumatic triple piece 3, pneumatic triple piece 3 pairs of compressed air sources 1 carry out filtration voltage stabilizing, pressurized air after voltage stabilizing arrives three position five-way valve 5, two outlets of three position five-way valve 5 are connected with cylinder 7 respectively, and pressurized air is injected ante-chamber 71 and the back cavity 72 of cylinder 7 by the action controlling three position five-way valve 5 by host computer 31 respectively.When pressurized air injects ante-chamber 71, cylinder 7 pushes away forward, thus promotes vacuum servo pump assembly 9, and what now simulate is the action brake stepped on by the brake pedal of vehicle, when pressurized air injects back cavity 72, cylinder 7 is drawn back, vacuum servo pump assembly 9 is set back, the action of the action brake releasing of simulating brake pedal return, pressure transducer 8 can measure the thrust of cylinder, the namely power that touches on the brake of people, vacuum tank 19 vacuumizes by vacuum pump 18, by pipeline, vacuum tank 19 is connected with vacuum servo pump assembly 9 again, thus provide a vacuum source for vacuum servo pump assembly 9, simulating vehicle engine is to the vacuum action of vacuum servo pump assembly, vacuum meter can read the size of vacuum tightness, vacuum values size is then fed back to host computer by capture card by vacuum sensor, thus form a closed-loop control, vacuum tightness is made to maintain about 66.7 ± 1.3Kpa.
When cylinder 7 promotes vacuum servo pump assembly 9 time, brake fluid in its oil can is pressed in ABS assembly 12 by fluid pressure line by vacuum servo pump assembly 9, enter in the middle of brake caliper assy 14 again by ABS assembly 9, thus realize the effect of brake, first hydraulic coupling sensor 131 and the second hydraulic coupling sensor 132 test the hydraulic coupling in total 9 one-tenth of vacuum booster pump and the hydraulic coupling in brake caliper assy 14 respectively, the size of current that ABS assembly 12 piston pump motor operationally tested respectively by the displacement of the piston of ABS assembly 12 accumulator operationally and current sensor 11 measured by displacement transducer 10, brake fluid in system can be entered in fuel tank 17 by oil filter 16 by vent valve 15 in system exhaust process.
Based on the method for testing of a kind of test macro realization that whole system realizes, comprise PWM test:
S1, whole hydraulic analog test macro installed fix, wherein also comprise ABS assembly 12 exemplar to be detected, to the wheel cylinder setting initial pressure value in ABS assembly 12;
S2, startup vacuum pump power-assisted assembly 9, make the pressure of vacuum tank maintain 66.7 ± 1.3Kpa;
S3, three position five-way valve 5 to be energized, make cylinder 7 promote master cylinder and carry out simulation brake, when pressurized air injects ante-chamber 71, cylinder 7 pushes away forward, thus promote vacuum servo pump assembly 9, what now simulate is the action brake stepped on by the brake pedal of vehicle;
S4, when pressure of wheel cylinder value reaches initial set value, close three position five-way valve 5, and keep cylinder pressure;
S5, decompression test is carried out to wheel cylinder: to the piston pump motor energising in ABS assembly, normally open valve energising closed, now, normally close valve is opened by fixed pulse frequency, makes pressure of wheel braking cylinder be down to below 1MPa;
S6, pressurized test is carried out to wheel cylinder: normally open valve is opened by fixed pulse frequency, makes pressure of wheel braking cylinder rise to initial setting force value;
Normally open valve and normally close valve durability test in ABS assembly: carry out loop test to test PWM method;
Piston pump motor speed regulating control test in ABS assembly: PWM control is carried out to the piston pump motor in ABS assembly.
Wherein, the mode of normally open valve and normally close valve durability test in ABS assembly is also comprised compose playback mode with road and carry out loop test.
In addition, it should be noted that, the specific embodiment described in this instructions, the shape, institute's title of being named etc. of its parts and components can be different.All equivalences of doing according to structure, feature and the principle described in the utility model inventional idea or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (8)
1. a hydraulic analog proving installation, it is characterized in that: comprise pneumatic triple piece (3), described pneumatic triple piece (3) is communicated with three position five-way valve (5), described three position five-way valve (5) is communicated with cylinder (7), described cylinder (7) is communicated with vacuum servo pump assembly (9), described vacuum servo pump assembly (9) is communicated with ABS assembly (12), described vacuum servo pump assembly (9) is communicated with vacuum tank (19), described vacuum tank (19) connects vacuum pump (18), described ABS assembly (12) is communicated with four brake caliper assys (14), the pipeline be communicated with between described cylinder (7) with vacuum servo pump assembly (9) is provided with pressure transducer (8).
2. a kind of hydraulic analog proving installation according to claim 1, it is characterized in that: the pipeline that described vacuum servo pump assembly (9) is communicated with ABS assembly (12) is provided with the first hydraulic pressure transducer (131), described brake caliper assy (14) is provided with the second hydraulic pressure transducer (132), described ABS assembly (12) is provided with displacement transducer (10) and current sensor (11), and described vacuum tank (19) is provided with vacuum meter (20) and vacuum sensor (21).
3. a kind of hydraulic analog proving installation according to claim 1, it is characterized in that: described three position five-way valve (5) is provided with the first outlet (51) and second and exports (52), described cylinder (7) is provided with front cylinder (71) and rear cylinder (72), cylinder (71) before described first outlet (51) is communicated with, cylinder (72) after second outlet (52) is communicated with, described three position five-way valve (5) is communicated with throttling valve (4).
4. a kind of hydraulic analog proving installation according to claim 1, is characterized in that: described pneumatic triple piece (3) is provided with the pipeline receiving compressed air source (1), and described pipeline is provided with valve (2).
5. a kind of hydraulic analog proving installation according to claim 1, is characterized in that: the pipeline that described pneumatic triple piece (3) is communicated with three position five-way valve (5) is provided with the first anti-shock pressure meter (61).
6. a kind of hydraulic analog proving installation according to claim 1, it is characterized in that: described brake caliper assy (14) is provided with outlet line, outlet line is provided with vent valve (15), the end of outlet line is provided with oil filter (16), and oil filter (16) and fuel tank (17) cooperatively interact.
7. a kind of hydraulic analog proving installation according to claim 1, is characterized in that: the pipeline that described vacuum servo pump assembly (9) is communicated with ABS assembly (12) is provided with the second anti-shock pressure meter (62).
8. based on the system that a kind of hydraulic analog proving installation according to claim 2 realizes, it is characterized in that: described first hydraulic pressure transducer (131), second hydraulic pressure transducer (132), pressure transducer (8), displacement transducer (10), current sensor (11) and vacuum sensor (21) connection data collecting unit respectively, described data acquisition unit connects host computer or computing machine, host computer or computing machine connect Driver Card, described Driver Card connects described three position five-way valve (5) respectively, described vacuum pump (18) and described ABS assembly (12), described hydraulic pressure transducer (131), hydraulic pressure transducer (132), pressure transducer (8), displacement transducer (10), current sensor (11) is connected power supply unit respectively with vacuum sensor (21).
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104502116A (en) * | 2014-09-18 | 2015-04-08 | 浙江万向精工有限公司 | Hydraulic simulation test apparatus and system, and test method |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104502116A (en) * | 2014-09-18 | 2015-04-08 | 浙江万向精工有限公司 | Hydraulic simulation test apparatus and system, and test method |
CN104502116B (en) * | 2014-09-18 | 2017-10-17 | 浙江万向精工有限公司 | Hydraulic analog test device and its system and method for testing |
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