CN203203772U - Air brake valve performance testing system used for tractor trailer - Google Patents
Air brake valve performance testing system used for tractor trailer Download PDFInfo
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- CN203203772U CN203203772U CN 201320234562 CN201320234562U CN203203772U CN 203203772 U CN203203772 U CN 203203772U CN 201320234562 CN201320234562 CN 201320234562 CN 201320234562 U CN201320234562 U CN 201320234562U CN 203203772 U CN203203772 U CN 203203772U
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Abstract
The utility model provides an air brake valve performance testing system sued for a tractor trailer. The air brake valve performance testing system sued for the tractor trailer includes a high-pressure air source device and air brake valve input pneumatic system, a dynamic characteristic power pneumatic system and air brake valve output testing system, a static characteristic power pneumatic system and air brake valve output testing system, and an air brake valve pressure regulating and sealing testing system. A high-pressure air source device in the high-pressure air source device and air brake valve input pneumatic system is installed outside the air brake valve performance testing system sued for the tractor trailer while an air brake valve input pneumatic system in the high-pressure air source device and air brake valve input pneumatic system, the dynamic characteristic power pneumatic system and air brake valve output testing system, the static characteristic power pneumatic system and air brake valve output testing system and the air brake valve pressure regulating and sealing testing system are all installed inside the air brake valve performance testing system sued for the tractor trailer. The air brake valve performance testing system sued for the tractor trailer can be used for testing performing pressure regulating and sealing performance, static characteristics and dynamic characteristics of air brake valves of three to-be-tested pieces at the same time, and can used for testing the air brake valve of a single to-be-tested piece. The air brake valve performance testing system sued for the tractor trailer is comparatively high in integration degree, convenient in installation and reliable in use.
Description
Technical field
The utility model belongs to the tractor field, relates to a kind of air brake valve Performance Test System, relates in particular to a kind of tractor trailer air brake valve Performance Test System.
Background technology
At present, the tractor trailer air brake valve Performance Test System of producing mostly is hand operation leverage or pin actuating linkage mechanism greatly and drives the air brake valve push rod both at home and abroad, makes air brake valve output gases at high pressure, reaches the purpose of air braking system braking.That two kinds of catanators all have is simple in structure, low price, advantage such as easily manufactured.But the use of two kinds of catanators all can have personal error to influence air brake valve performance test precision.Therefore, develop that a kind of compact conformation, reasonable price, good seal performance, manufacturing process are simple relatively, the high and safe and reliable tractor trailer air brake valve Performance Test System of measuring accuracy, will be subjected to users' favor.Verification experimental verification, we possess above-mentioned advantage by the air brake valve Performance Test System of development, are equally applicable on the tractor-trailer braking system.
The utility model content
The purpose of this utility model be to provide a kind of rational in infrastructure, cost is moderate, system stiffness and good seal performance, measuring accuracy height, easy for installation and service-strong tractor trailer air brake valve Performance Test System.
The technical solution of the utility model is: tractor trailer air brake valve Performance Test System comprises: high-pressure air source device and air brake valve input air pressure system, dynamic perfromance power baric systerm and air brake valve output test macro, static characteristics dynamicliquid pressure system and air brake valve output test macro, air brake valve pressure regulation and sealing test system; High-pressure air source device in high-pressure air source device and the air brake valve input air pressure system is installed in tractor trailer air brake valve Performance Test System outside, air brake valve input air pressure system in high-pressure air source device and the air brake valve input air pressure system is installed in tractor trailer air brake valve Performance Test System inside, is connected in series by three-way connection; High-pressure air source device and air brake valve input air pressure system are by three-way connection the 3rd retaining valve of connecting, be connected with the dynamic perfromance power baric systerm of dynamic perfromance power baric systerm with air brake valve output test macro, dynamic perfromance power baric systerm and air brake valve output test macro are installed in the inside of tractor trailer air brake valve Performance Test System again; Simultaneously by four-way connection connect respectively second retaining valve and the 6th stop valve, first retaining valve and the 5th stop valve, the 4th retaining valve and the tenth stop valve, more respectively with first being connected by test specimen air brake valve air intake opening by test specimen air brake valve, the 3rd by test specimen air brake valve, second of being installed in tractor trailer air brake valve Performance Test System inside; Dynamic perfromance power baric systerm is connected by the push rod in the test specimen air brake valve with first by the first push rod coupling arrangement with the dynamic perfromance power baric systerm that air brake valve is exported in the test macro, and dynamic perfromance power baric systerm is exported test macro with the air brake valve in the air brake valve output test macro and is connected by the gas outlet of test specimen air brake valve with first; Static characteristics dynamicliquid pressure system and air brake valve output test macro are installed in tractor trailer air brake valve Performance Test System inside, static characteristics dynamicliquid pressure system is connected by the push rod in the test specimen air brake valve with second by the second push rod coupling arrangement with the static characteristics dynamicliquid pressure system that air brake valve is exported in the test macro, and static characteristics dynamicliquid pressure system exports test macro with the air brake valve in the air brake valve output test macro and is connected by the gas outlet of test specimen air brake valve with second; Air brake valve pressure regulation and sealing test system are installed in tractor trailer air brake valve Performance Test System inside, the air brake valve pressure regulation is connected by the push rod in the test specimen air brake valve with the 3rd by leading screw push rod coupling arrangement with the sealing test system, and the air brake valve pressure regulation is connected by the gas outlet of test specimen air brake valve with the 3rd with the sealing test system.
Air coarse filter in described high-pressure air source device and the air brake valve input air pressure system is connected in parallel by three-way connection and optical indicator and air compressor air intake opening; First motor is connected in series by motor and air compressor coupling arrangement and air compressor; First stop valve, one end is connected with the air compressor gas outlet, and the first stop valve other end is connected with the refrigeratory air intake opening of electric fan cooling; Filtering air inlet one end of band manual drainage separation vessel is connected with the refrigeratory gas outlet of electric fan cooling, and the filtrator other end gas outlet of band manual drainage separation vessel flows to reversible pressure regulator valve air intake opening with first inside and is connected; Second stop valve, one end flows to reversible pressure regulator valve gas outlet with first inside and is connected, and the second stop valve other end is connected with big gas-holder air intake opening; First rain glass is installed on big gas-holder top, and first draining valve is installed in the bottom, and big gas-holder gas outlet is connected with automatic draining fluid separator air intake opening; Automatically draining fluid separator gas outlet is connected in parallel by three-way connection and the 3rd stop valve one end and the 3rd check valve inlet; The 3rd retaining valve gas outlet is connected with the 7th stop valve that dynamic perfromance power baric systerm and air brake valve are exported in the test macro; The 3rd stop valve other end flows to reversible pressure regulator valve air intake opening with second inside and is connected; Second inside flows to reversible pressure regulator valve gas outlet and is connected in parallel by three-way connection and second rain glass and middle gas-holder air intake opening; Middle gas-holder right lower quadrant is installed second draining valve, and middle gas-holder gas outlet is connected with the 4th stop valve one end; The 4th stop valve other end is connected in parallel with first retaining valve, second retaining valve, the 4th check valve inlet respectively by four-way connection; The 5th stop valve one end is connected with the first retaining valve gas outlet, and the 5th stop valve other end and second is connected by test specimen air brake valve air intake opening; The 6th stop valve one end is connected with the second retaining valve gas outlet, and the 6th stop valve other end is connected by test specimen air brake valve air intake opening with first; The tenth stop valve one end is connected with the 4th retaining valve gas outlet, and the tenth stop valve other end is connected by test specimen air brake valve air intake opening with the 3rd.
The 3rd inside in described dynamic perfromance power baric systerm and the air brake valve output test macro flows to reversible pressure regulator valve air intake opening and is connected with the 7th stop valve, and the 3rd inside flows to reversible pressure regulator valve gas outlet and the oil sprayer air intake opening is connected in series; Pneumatic proportional flow speed control valve air intake opening is connected with the oil sprayer gas outlet, and pneumatic proportional flow speed control valve gas outlet and ratio two-position four-way directional control valve air intake opening are connected in series; In two gas outlets of ratio two-position four-way directional control valve one is connected in parallel with the first simulating signal pressure sensor output, the 3rd rain glass, the single rod cylinder of double acting rodless cavity, and another in two gas outlets of ratio two-position four-way directional control valve and double acting list rod cylinder rod chamber are connected; The piston rod while of the single rod cylinder of double acting and cylinder and the first displacement transducer coupling arrangement and cylinder and the first power sensor coupling arrangement are connected in series; Cylinder is connected with first displacement transducer with the first displacement transducer coupling arrangement, and cylinder is connected with the first power sensor with the first power sensor coupling arrangement, and first displacement transducer and the first power sensor are connected in parallel; First push rod coupling arrangement upper end is connected with the first power sensor, and the first push rod coupling arrangement lower end is connected by test specimen air brake valve push rod with first; First is connected in parallel by test specimen air brake valve gas outlet and the second simulating signal pressure sensor output, the 4th rain glass and three-way connection one end, and this three-way connection is connected in parallel with the 8th stop valve, the 9th stop valve respectively at two ends in addition; The 9th stop valve is connected in parallel with the first little cylinder and the second stingy cylinder rodless cavity respectively by three-way connection; The first little cylinder is connected with the second small cylinder piston throw of lever regulating device with the first small cylinder piston throw of lever regulating device respectively with the second small cylinder piston bar; The 8th stop valve is connected in parallel with the first little gas-holder and the second little gas-holder respectively by three-way connection; The first little gas-holder and the second little gas-holder right lower quadrant are installed the 3rd draining valve and the 4th draining valve respectively.
Hydraulic pressure coarse filter in described static characteristics dynamicliquid pressure system and the air brake valve output test macro is contained in the tractor trailer air brake valve Performance Test System internal hydraulic pressure fuel tank, and limited pressure variable vane pump is installed in hydraulic reservoir and covers face; Be connected by oil pipe between hydraulic pressure coarse filter and the limited pressure variable vane pump; Second motor is connected in series by motor and vane pump coupling arrangement and limited pressure variable vane pump; Hydraulic pressure fine filter oil-in is connected with the limited pressure variable vane pump oil-out, and hydraulic pressure fine filter oil-out is connected with lower floor integrated package oil-in with oil pipe; The electric-hydraulic proportion pilot operated compound relief valve oil-in that is installed on lower floor's integrated package is communicated with lower floor integrated package oil-in by inner oil duct, and is communicated with by inner oil duct and the electrohydraulic proportional velocity regulating valve oil-in parallel connection that is installed in the upper strata integrated package; The bi-bit bi-pass electromagnetism directional control valve oil-in that is installed on lower floor's integrated package is communicated with electric-hydraulic proportion pilot operated compound relief valve Remote hydraulic fluid port by inner oil duct, and bi-bit bi-pass electromagnetism directional control valve oil-out is communicated with direct-acting overflow valve oil-in on being installed in lower floor's integrated package by inner oil duct; Electric-hydraulic proportion pilot operated compound relief valve and direct-acting overflow valve oil-out are communicated with by inner oil duct, and are connected with hydraulic reservoir with oil pipe; The electric-hydraulic proportion 3-position 4-way directional control valve oil-in that is installed in the upper strata integrated package is communicated with the electrohydraulic proportional velocity regulating valve oil-out by inner oil duct, oil-out of electric-hydraulic proportion 3-position 4-way directional control valve by inner oil duct respectively with the hydraulic gage that is installed in the upper strata integrated package, simulating signal output hydraulic pressure sensor oil-in, and be connected in parallel with oil pipe and double acting asymmetric servo cylinder rodless cavity, another oil-out of electric-hydraulic proportion 3-position 4-way directional control valve is connected with double acting asymmetric servo cylinder rod chamber with oil pipe, and electric-hydraulic proportion 3-position 4-way directional control valve oil return opening is communicated with electric-hydraulic proportion pilot operated compound relief valve and direct-acting overflow valve oil-out by inner oil duct; Double acting asymmetric servo cylinder while and hydraulic cylinder and the second displacement transducer coupling arrangement and hydraulic cylinder and the second power sensor coupling arrangement are connected in series; Hydraulic cylinder is connected with second displacement transducer with the second displacement transducer coupling arrangement, and hydraulic cylinder is connected with the second power sensor with the second power sensor coupling arrangement, and second displacement transducer is in parallel with the second power sensor; Second push rod coupling arrangement upper end is connected with the second power sensor, and the second push rod coupling arrangement lower end is connected by test specimen air brake valve push rod with second; Second is connected in parallel by test specimen air brake valve gas outlet and the 3rd simulating signal pressure sensor output, the 5th rain glass and the 3rd little gas-holder one end, at the 3rd little gas-holder bottom righthand side the 5th draining valve is installed.
Leading screw operating means in described air brake valve pressure regulation and the sealing test system and leading screw push rod coupling arrangement are installed in the 3rd by test specimen air brake valve top, leading screw push rod coupling arrangement is installed in leading screw operating means inside, and leading screw push rod coupling arrangement bottom is connected by test specimen air brake valve push rod with the 3rd; The 3rd is connected in parallel by test specimen air brake valve gas outlet and the 4th simulating signal pressure sensor output, the 6th rain glass and the 4th little gas-holder one end, at the 4th little gas-holder bottom righthand side the 6th draining valve is installed.
The utility model adopts the good effect that produces after the technique scheme to be: native system is rational in infrastructure, cost is moderate, system stiffness and good seal performance, the measuring accuracy height, both can be carried out pressure regulation and sealing property test, static characteristics test and dynamic characteristic test to three by the test specimen air brake valve simultaneously, can be tested by the test specimen air brake valve one or two again, integrated level is higher, and is easy for installation and use reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model tractor trailer air brake valve Performance Test System.
Fig. 2 is the test mode synoptic diagram of the utility model tractor trailer air brake valve Performance Test System.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.Shown in Fig. 1 ~ 2, tractor trailer air brake valve Performance Test System mainly comprises: high-pressure air source device and air brake valve input air pressure system 26, dynamic perfromance power baric systerm and air brake valve output test macro 52, static characteristics dynamicliquid pressure system and air brake valve output test macro 77, air brake valve pressure regulation and sealing test system 83; It is characterized in that: the high-pressure air source device in high-pressure air source device and the air brake valve input air pressure system 26 is installed in tractor trailer air brake valve Performance Test System outside, air brake valve input air pressure system in high-pressure air source device and the air brake valve input air pressure system 26 is installed in tractor trailer air brake valve Performance Test System inside, is connected in series with pneumatic circuit by three-way connection; High-pressure air source device and air brake valve input air pressure system 26 by three-way connection with pneumatic circuit the 3rd retaining valve 25 of connecting, be connected with the dynamic perfromance power baric systerm of dynamic perfromance power baric systerm with air brake valve output test macro 52 with pneumatic circuit, dynamic perfromance power baric systerm and air brake valve output test macro 52 are installed in the inside of tractor trailer air brake valve Performance Test System again; Simultaneously by four-way connection respectively with pneumatic circuit connect second retaining valve 24 and the 6th stop valve 23, first retaining valve 21 and the 5th stop valve 22, the 4th retaining valve 78 and the tenth stop valve 79, again with pneumatic circuit respectively with first being connected by test specimen air brake valve 82 air intake openings by test specimen air brake valve 76, the 3rd by test specimen air brake valve 53, second of being installed in tractor trailer air brake valve Performance Test System inside; Dynamic perfromance power baric systerm is connected by the push rod in the test specimen air brake valve 53 with first by the first push rod coupling arrangement 38 with the dynamic perfromance power baric systerm that air brake valve is exported in the test macro 52, and dynamic perfromance power baric systerm is exported test macro with the air brake valve in the air brake valve output test macro 52 and is connected with pneumatic circuit by the gas outlet of test specimen air brake valve 53 with first; Static characteristics dynamicliquid pressure system and air brake valve output test macro 77 are installed in tractor trailer air brake valve Performance Test System inside, static characteristics dynamicliquid pressure system is connected by the push rod in the test specimen air brake valve 76 with second by the second push rod coupling arrangement 75 with the static characteristics dynamicliquid pressure system that air brake valve is exported in the test macro 77, and static characteristics dynamicliquid pressure system exports test macro with the air brake valve in the air brake valve output test macro 77 and is connected with pneumatic circuit by the gas outlet of test specimen air brake valve 76 with second; Air brake valve pressure regulation and sealing test system 83 are installed in tractor trailer air brake valve Performance Test System inside, air brake valve pressure regulation and sealing test system 83 are connected by the push rod in the test specimen air brake valve 82 with the 3rd by leading screw push rod coupling arrangement 81, and the air brake valve pressure regulation is connected with pneumatic circuit by the gas outlet of test specimen air brake valve 82 with the 3rd with sealing test system 83.
High-pressure air source device and air brake valve input air pressure system 26 comprise: air coarse filter 1, optical indicator 2, air compressor 3, motor and air compressor coupling arrangement 4, first motor 5, first stop valve 6, the refrigeratory 7 of electric fan cooling, the filtrator 8 of band manual drainage separation vessel, first inside flows to reversible pressure regulator valve 9, second stop valve 10, big gas-holder 11, first rain glass 12, first draining valve 13, automatic draining fluid separator 14, the 3rd stop valve 15, second inside flows to reversible pressure regulator valve 16, second rain glass 17, middle gas-holder 18, second draining valve 19, the 4th stop valve 20, first retaining valve 21, the 5th stop valve 22, the 6th stop valve 23, second retaining valve 24, the 3rd retaining valve 25, the 4th retaining valve 78, the tenth stop valve 79; Air coarse filter 1 in high-pressure air source device and the air brake valve input air pressure system 26 is connected in parallel with pneumatic circuit and optical indicator 2 and air compressor 3 air intake openings by three-way connection; First motor 5 is connected in series by motor and air compressor coupling arrangement 4 and air compressor 3; First stop valve, 6 one ends are connected with air compressor 3 gas outlets by pipeline, and first stop valve, 6 other ends are connected with refrigeratory 7 air intake openings of electric fan cooling; Filtrator 8 air intake openings one end of band manual drainage separation vessel is connected by refrigeratory 7 gas outlets of pipeline with the electric fan cooling, and filtrator 8 other end gas outlets of band manual drainage separation vessel flow to reversible pressure regulator valve 9 air intake openings with first inside and are connected; Second stop valve, 10 1 ends flow to reversible pressure regulator valve 9 gas outlets by pipeline and first inside and are connected, and second stop valve, 10 other ends are connected with big gas-holder 11 air intake openings; First rain glass 12 is installed on big gas-holder 11 tops, and first draining valve 13 is installed in the bottom, and big gas-holder 11 gas outlets are connected with automatic draining fluid separator 14 air intake openings by pipeline; Automatically draining fluid separator 14 gas outlets are connected in parallel with pneumatic circuit and the 3rd stop valve 15 1 ends and the 3rd retaining valve 25 air intake openings by three-way connection; The 7th stop valve 27 that export in the test macro 52 with pneumatic circuit and dynamic perfromance power baric systerm and air brake valve the 3rd retaining valve 25 gas outlets is connected; The 3rd stop valve 15 other ends flow to reversible pressure regulator valve 16 air intake openings with pneumatic circuit and second inside and are connected; Second inside flows to reversible pressure regulator valve 16 gas outlets and is connected in parallel with pneumatic circuit and second rain glass 17 and middle gas-holder 18 air intake openings by three-way connection; Middle gas-holder 18 right lower quadrants are installed second draining valve 19, and middle gas-holder 18 gas outlets are connected with the 4th stop valve 20 1 ends with pneumatic circuit; The 4th stop valve 20 other ends are connected in parallel with pneumatic circuit and first retaining valve 21, second retaining valve 24, the 4th retaining valve 78 air intake openings respectively by four-way connection; The 5th stop valve 22 1 ends are connected with first retaining valve, 21 gas outlets with pneumatic circuit, and the 5th stop valve 22 other ends are connected by test specimen air brake valve 76 air intake openings with pneumatic circuit and second; The 6th stop valve 23 1 ends are connected with second retaining valve, 24 gas outlets with pneumatic circuit, and the 6th stop valve 23 other ends are connected by test specimen air brake valve 53 air intake openings with first with pneumatic circuit; The tenth stop valve 79 1 ends are connected with the 4th retaining valve 78 gas outlets with pneumatic circuit, and the tenth stop valve 79 other ends are connected by test specimen air brake valve 82 air intake openings with the 3rd with pneumatic circuit.
Dynamic perfromance power baric systerm and air brake valve output test macro 52 comprise: the 7th stop valve 27, the 3rd inside flows to reversible pressure regulator valve 28, oil sprayer 29, pneumatic proportional flow speed control valve 30, ratio two-position four-way directional control valve 31, the first simulating signal pressure sensor output 32, the 3rd rain glass 33, the single rod cylinder 34 of double acting, cylinder and the first displacement transducer coupling arrangement 35, cylinder and the first power sensor coupling arrangement 36, the first power sensor 37, the first push rod coupling arrangement 38, first displacement transducer 39, the second simulating signal pressure sensor output 40, the 4th rain glass 41, the 8th stop valve 42, the 9th stop valve 43, the first stingy cylinder 44, the first small cylinder piston throw of lever regulating device 45, the second stingy cylinder 46, the second small cylinder piston throw of lever regulating device 47, the first little gas-holder 48, the 3rd draining valve 49, the second little gas-holder 50, the 4th draining valve 51; The 3rd inside in dynamic perfromance power baric systerm and the air brake valve output test macro 52 is flowed to reversible pressure regulator valve 28 air intake openings be connected with the 7th stop valve 27 with pneumatic circuit, the 3rd inside flows to reversible pressure regulator valve 28 gas outlets and is connected in series with pneumatic circuit and oil sprayer 29 air intake openings; Pneumatic proportional flow speed control valve 30 air intake openings are connected with oil sprayer 29 gas outlets with pneumatic circuit, and pneumatic proportional flow speed control valve 30 gas outlets are connected in series with pneumatic circuit and ratio two-position four-way directional control valve 31 air intake openings; In two gas outlets of ratio two-position four-way directional control valve 31 one is connected in parallel with the first simulating signal pressure sensor output 32, the 3rd rain glass 33, the single rod cylinder of double acting 34 rodless cavities, and another in two gas outlets of ratio two-position four-way directional control valve 31 and double acting list rod cylinder 34 rod chambers are connected; The piston rod while of the single rod cylinder 34 of double acting and cylinder and the first displacement transducer coupling arrangement 35 and cylinder and the first power sensor coupling arrangement 36 are connected in series; Cylinder is connected with first displacement transducer 39 with the first displacement transducer coupling arrangement 35, and cylinder is connected with the first power sensor 37 with the first power sensor coupling arrangement 36, and first displacement transducer 39 is in parallel with the first power sensor 37; The first push rod coupling arrangement, 38 upper ends are connected with the first power sensor 37, and the first push rod coupling arrangement, 38 lower ends are connected by test specimen air brake valve 53 push rods with first; First is connected in parallel by test specimen air brake valve 53 gas outlets and the second simulating signal pressure sensor output 40, the 4th rain glass 41 and three-way connection one end, and this three-way connection is connected in parallel with the 8th stop valve 42, the 9th stop valve 43 respectively at two ends in addition; The 9th stop valve 43 is connected in parallel with the first stingy cylinder 44 and second stingy cylinder 46 rodless cavities respectively by three-way connection; The first stingy cylinder 44 is connected with the second small cylinder piston throw of lever regulating device 47 with the first small cylinder piston throw of lever regulating device 45 respectively with second stingy cylinder 46 piston rods; The 8th stop valve 42 is connected in parallel with the first little gas-holder 48 and the second little gas-holder 50 respectively by three-way connection; The first little gas-holder 48 and second little gas-holder 50 right lower quadrants are installed the 3rd draining valve 49 and the 4th draining valve 51 respectively.
Static characteristics dynamicliquid pressure system and air brake valve output test macro 77 comprise: double acting asymmetric servo cylinder 54, simulating signal output hydraulic pressure sensor 55, hydraulic gage 56, electric-hydraulic proportion 3-position 4-way directional control valve 57, electrohydraulic proportional velocity regulating valve 58, hydraulic pressure fine filter 59, electric-hydraulic proportion pilot operated compound relief valve 60, bi-bit bi-pass electromagnetism directional control valve 61, direct-acting overflow valve 62, limited pressure variable vane pump 63, second motor 64, motor and vane pump coupling arrangement 65, hydraulic pressure coarse filter 66, the 5th draining valve 67, the 3rd little gas-holder 68, the 5th rain glass 69, the 3rd simulating signal pressure sensor output 70, second displacement transducer 71, hydraulic cylinder and the second displacement transducer coupling arrangement 72, hydraulic cylinder and the second power sensor coupling arrangement 73, the second power sensor 74, the second push rod coupling arrangement 75; Hydraulic pressure coarse filter 66 in static characteristics dynamicliquid pressure system and the air brake valve output test macro 77 is contained in the tractor trailer air brake valve Performance Test System internal hydraulic pressure fuel tank, and limited pressure variable vane pump 63 is installed in hydraulic reservoir and covers face; Be connected by oil pipe between hydraulic pressure coarse filter 66 and the limited pressure variable vane pump 63; Second motor 64 is connected in series by motor and vane pump coupling arrangement 65 and limited pressure variable vane pump 63; Hydraulic pressure fine filter 59 oil-ins are connected with limited pressure variable vane pump 63 oil-outs with oil pipe, and hydraulic pressure fine filter 59 oil-outs usefulness oil pipe is connected with lower floor integrated package oil-in; Electric-hydraulic proportion pilot operated compound relief valve 60 oil-ins that are installed on lower floor's integrated package are communicated with lower floor integrated package oil-in by inner oil duct, and are communicated with by inner oil duct and the electrohydraulic proportional velocity regulating valve 58 oil-ins parallel connection that is installed in the upper strata integrated package; Bi-bit bi-pass electromagnetism directional control valve 61 oil-ins that are installed on lower floor's integrated package are communicated with electric-hydraulic proportion pilot operated compound relief valve 60 Remote hydraulic fluid port K by inner oil duct, and bi-bit bi-pass electromagnetism directional control valve 61 oil-outs are communicated with direct-acting overflow valve 62 oil-ins on being installed in lower floor's integrated package by inner oil duct; Electric-hydraulic proportion pilot operated compound relief valve 60 and direct-acting overflow valve 62 oil-outs are communicated with by inner oil duct, and are connected with hydraulic reservoir with oil pipe; Electric-hydraulic proportion 3-position 4-way directional control valve 57 oil-ins that are installed in the upper strata integrated package are communicated with electrohydraulic proportional velocity regulating valve 58 oil-outs by inner oil duct, 57 1 oil-outs of electric-hydraulic proportion 3-position 4-way directional control valve by inner oil duct respectively with the hydraulic gage 56 that is installed in the upper strata integrated package, simulating signal output hydraulic pressure sensor 55 oil-ins, and be connected in parallel with oil pipe and double acting asymmetric servo cylinder 54 rodless cavities, electric-hydraulic proportion 3-position 4-way directional control valve 57 another oil-outs are connected with double acting asymmetric servo cylinder 54 rod chambers with oil pipe, and electric-hydraulic proportion 3-position 4-way directional control valve 57 oil return openings are communicated with electric-hydraulic proportion pilot operated compound relief valve 60 and direct-acting overflow valve 62 oil-outs by inner oil duct; 54 whiles of double acting asymmetric servo cylinder and hydraulic cylinder and the second displacement transducer coupling arrangement 72 and hydraulic cylinder and the second power sensor coupling arrangement 73 are connected in series; Hydraulic cylinder is connected with second displacement transducer 71 with the second displacement transducer coupling arrangement 72, and hydraulic cylinder is connected with the second power sensor 74 with the second power sensor coupling arrangement 73, and second displacement transducer 71 is in parallel with the second power sensor 74; The second push rod coupling arrangement, 75 upper ends are connected with the second power sensor 74, and the second push rod coupling arrangement, 75 lower ends are connected by test specimen air brake valve 76 push rods with second; Second is connected in parallel by test specimen air brake valve 76 gas outlets and the 3rd simulating signal pressure sensor output 70, the 5th rain glass 69 and the 3rd little gas-holder 68 1 ends, at the 3rd little gas-holder 68 bottom righthand sides the 5th draining valve 67 is installed.
Air brake valve pressure regulation and sealing test system 83 comprise: leading screw operating means 80, leading screw push rod coupling arrangement 81, the 4th simulating signal pressure sensor output 84, the 6th rain glass 85, the 4th little gas-holder 86, the 6th draining valve 87; Leading screw operating means 80 in air brake valve pressure regulation and the sealing test system 83 and leading screw push rod coupling arrangement 81 are installed in the 3rd by test specimen air brake valve 82 tops, leading screw push rod coupling arrangement 81 is installed in leading screw operating means 80 inside, and leading screw push rod coupling arrangement 81 bottoms are connected by test specimen air brake valve 82 push rods with the 3rd; The 3rd is connected in parallel by test specimen air brake valve 82 gas outlets and the 4th simulating signal pressure sensor output 84, the 6th rain glass 85 and the 4th little gas-holder 86 1 ends, at the 4th little gas-holder 86 bottom righthand sides the 6th draining valve 87 is installed.
Under the initial state, in high-pressure air source device and air brake valve input air pressure system 26, open first stop valve 6, second stop valve 10, the 3rd stop valve 15, the 4th stop valve 20, the 5th stop valve 22, the 6th stop valve 23, the 7th stop valve 27, the 8th stop valve 42 or the 9th stop valve 43, the tenth stop valve 79 earlier; Start first motor 5 and drive air compressor 3 by motor and air compressor coupling arrangement 4, after air compressor 3 sucks air through air coarse filters 1, the pressurized air that produces is flowed to reversible pressure regulator valve 9, second stop valve 10, big gas-holder 11, first rain glass 12, draining fluid separator 14 automatically through filtrator 8, first inside of the refrigeratory 7 of first stop valve 6, electric fan cooling, band manual drainage separation vessel; An interface by a three-way connection enters dynamic perfromance power baric systerm in dynamic perfromance power baric systerm and the air brake valve output test macro 52 with pressurized air through the 3rd retaining valve 25 again, simultaneously another interface of three-way connection with pressurized air through the 3rd stop valve 15, second inside flows to reversible pressure regulator valve 16, second rain glass 17, middle gas-holder 18, the 4th stop valve 20, this road pressurized air again through a four-way connection respectively through first retaining valve 21 and the 5th stop valve 22, second retaining valve 24 and the 6th stop valve 23, the 4th retaining valve 78 and the tenth stop valve 79 enter first simultaneously by test specimen air brake valve 53, second by test specimen air brake valve 76, the 3rd by test specimen air brake valve 82 air intake openings.First inside flows to the top pressure that reversible pressure regulator valve 9 limits air compressor 3; Second inside flow to reversible pressure regulator valve 16 limit first by test specimen air brake valve 53, second by test specimen air brake valve 76, the 3rd by the top pressure of test specimen air brake valve 82 air intake openings.
In dynamic perfromance power baric systerm and air brake valve output test macro 52, pressurized air through the 3rd retaining valve 25 enter the 7th stop valve 27, the 3rd inside flows to reversible pressure regulator valve 28, oil sprayer 29, pneumatic proportional flow speed control valve 30, ratio two-position four-way directional control valve 31 the next, single rod cylinder 34 rod chambers of double acting; The single rod cylinder of double acting 34 rodless cavities are connected and from the 31 exhausr port exhausts of ratio two-position four-way directional control valve with pipeline and the 3rd rain glass 33, the first simulating signal pressure sensor output 32, ratio two-position four-way directional control valve 31 are the next.The 3rd inside flows to the top pressure that reversible pressure regulator valve 28 limits the single rod cylinder 34 of double acting.Pneumatic proportional flow speed control valve 30 is regulated the movement velocity of the single rod cylinder of double acting 34 piston rods.
In static characteristics dynamicliquid pressure system and air brake valve output test macro 77, start second motor 64 and drive limited pressure variable vane pump 63 by motor and vane pump coupling arrangement 65, limited pressure variable vane pump 63 process hydraulic pressure coarse filters 66 are from the hydraulic reservoir oil suction, again with pressure oil through hydraulic pressure fine filter 59 and three-way connection after, enter electric-hydraulic proportion pilot operated compound relief valve 60 oil-ins, pressure oil flows back to hydraulic reservoir through electrohydraulic proportional velocity regulating valve 58, electric-hydraulic proportion 3-position 4-way directional control valve 57 metas simultaneously.The movement velocity that electrohydraulic proportional velocity regulating valve 58 is regulated double acting asymmetric servo cylinder 54 piston rods; Electric-hydraulic proportion pilot operated compound relief valve 60 limits the top pressure of limited pressure variable vane pump 63; 62 pairs of limited pressure variable vane pumps of direct-acting overflow valve 63 carry out long-range pressure regulation.
In air brake valve pressure regulation and sealing test system 83, till making leading screw push rod coupling arrangement 81 and the 3rd has just been contacted by test specimen air brake valve 82 push rods by operation leading screw operating means 80, namely eliminated mechanical lever drive gap partly.
Under the test mode, during the air brake valve dynamic characteristic test, press air brake valve dynamic characteristic test button, the energising of ratio two-position four-way directional control valve 31 electromagnet, make ratio two-position four-way directional control valve 31 upper in running order, the high pressure air passing ratio two-position four-way directional control valve 31 upper single rod cylinder of double acting 34 rodless cavities that enter, rod chamber is through the 31 upper exhausts of ratio two-position four-way directional control valve, piston rod drives cylinder and the first displacement transducer coupling arrangement 35, cylinder and the first power sensor coupling arrangement 36, the first power sensor 37, the first push rod coupling arrangement 38, first displacement transducer 39 moves downward rapidly, open first by test specimen air brake valve 53 air intake valves, high pressure air is exported from first by test specimen air brake valve 53 gas outlets, enters the second simulating signal pressure sensor output 40, the 4th rain glass 41.When opening the 8th stop valve 42 and closing the 9th stop valve 43, high pressure air enters the first little gas-holder 48 and the second little gas-holder 50 simultaneously; When opening the 9th stop valve 43 and closing the 8th stop valve 42, high pressure air enters the first stingy cylinder 44 and the second stingy cylinder 46 simultaneously.The 4th rain glass 41 pointers indication test data, the second simulating signal pressure sensor output, 40 image data input to computing machine simultaneously.
Under the test mode, during the test of air brake valve static characteristics, press air brake valve static characteristics testing button, the 57 lower end electromagnet energisings of electric-hydraulic proportion 3-position 4-way directional control valve, make electric-hydraulic proportion 3-position 4-way directional control valve 57 the next in running order, pressure oil is by electric-hydraulic proportion 3-position 4-way directional control valve 57 the next double acting asymmetric servo cylinder 54 rodless cavities that enter, rod chamber fluid flows back to hydraulic reservoir by pipeline through electric-hydraulic proportion 3-position 4-way directional control valve 57 is the next, piston rod drives hydraulic cylinder and the second displacement transducer coupling arrangement 72, hydraulic cylinder and the second power sensor coupling arrangement 73, the second power sensor 74, the second push rod coupling arrangement 75, second displacement transducer 71 moves downward, open second by test specimen air brake valve 76 air intake valves, high pressure air is exported from second by test specimen air brake valve 76 gas outlets, enters the 3rd simulating signal pressure sensor output 70, the 5th rain glass 69, the 3rd little gas-holder 68.The 5th rain glass 69 pointers indication test data, the 3rd simulating signal pressure sensor output 70 image data input to computing machine simultaneously.
Under the test mode, when air brake valve pressure regulation and sealing test, operation leading screw operating means 80 makes leading screw push rod coupling arrangement 81 and the 3rd be moved downward by test specimen air brake valve 82 push rods, open the 3rd by test specimen air brake valve 82 air intake valves, high pressure air is exported from the 3rd by test specimen air brake valve 82 gas outlets, enters the 4th simulating signal pressure sensor output 84, the 6th rain glass 85, the 4th little gas-holder 86.The 6th rain glass 85 pointers indication test data, the 4th simulating signal pressure sensor output 84 image data input to computing machine simultaneously.When the 3rd is reached setting by test specimen air brake valve 82 gas outlet output pressures, shut-down operation leading screw operating means 80, build-in test the 3rd is by test specimen air brake valve 82 pressure drop values at the appointed time, thereby estimates its sealing.
First draining valve 13, second draining valve 19, the 3rd draining valve 49, the 4th draining valve 51, the 5th draining valve 67, the 6th draining valve 87 are respectively applied to regularly get rid of the water in big gas-holder 11, middle gas-holder 18, the first little gas-holder 48, the second little gas-holder 50, the 3rd little gas-holder 68, the 4th little gas-holder 86.The filtrator 8 of band manual drainage separation vessel regularly carries out artificial drainage.Oil sprayer 29 regularly manually adds lubricating oil.
Each parts couples together by pipeline and the seal of tractor trailer air brake valve Performance Test System schematic diagram by different-diameter, be arranged in the inside and outside various piece of tractor trailer air brake valve Performance Test System, to satisfy the demand of tractor trailer air brake valve Performance Test System.
Claims (5)
1. tractor trailer air brake valve Performance Test System comprises: high-pressure air source device and air brake valve input air pressure system (26), dynamic perfromance power baric systerm and air brake valve output test macro (52), static characteristics dynamicliquid pressure system and air brake valve output test macro (77), air brake valve pressure regulation and sealing test system (83); It is characterized in that: the high-pressure air source device in high-pressure air source device and the air brake valve input air pressure system (26) is installed in tractor trailer air brake valve Performance Test System outside, air brake valve input air pressure system in high-pressure air source device and the air brake valve input air pressure system (26) is installed in tractor trailer air brake valve Performance Test System inside, is connected in series by three-way connection; High-pressure air source device and air brake valve input air pressure system (26) are by three-way connection the 3rd retaining valve (25) of connecting, be connected with the dynamic perfromance power baric systerm of dynamic perfromance power baric systerm with air brake valve output test macro (52), dynamic perfromance power baric systerm and air brake valve output test macro (52) are installed in the inside of tractor trailer air brake valve Performance Test System again; Simultaneously by four-way connection connect respectively second retaining valve (24) and the 6th stop valve (23), first retaining valve (21) and the 5th stop valve (22), the 4th retaining valve (78) and the tenth stop valve (79), more respectively with first being connected by test specimen air brake valve (82) air intake opening by test specimen air brake valve (76), the 3rd by test specimen air brake valve (53), second of being installed in tractor trailer air brake valve Performance Test System inside; Dynamic perfromance power baric systerm is connected by the push rod in the test specimen air brake valve (53) with first by the first push rod coupling arrangement (38) with the dynamic perfromance power baric systerm that air brake valve is exported in the test macro (52), and dynamic perfromance power baric systerm is exported test macro with the air brake valve in the air brake valve output test macro (52) and is connected by the gas outlet of test specimen air brake valve (53) with first; Static characteristics dynamicliquid pressure system and air brake valve output test macro (77) are installed in tractor trailer air brake valve Performance Test System inside, static characteristics dynamicliquid pressure system is connected by the push rod in the test specimen air brake valve (76) with second by the second push rod coupling arrangement (75) with the static characteristics dynamicliquid pressure system that air brake valve is exported in the test macro (77), and static characteristics dynamicliquid pressure system exports test macro with the air brake valve in the air brake valve output test macro (77) and is connected by the gas outlet of test specimen air brake valve (76) with second; Air brake valve pressure regulation and sealing test system (83) are installed in tractor trailer air brake valve Performance Test System inside, the air brake valve pressure regulation is connected by the push rod in the test specimen air brake valve (82) with the 3rd by leading screw push rod coupling arrangement (81) with sealing test system (83), and the air brake valve pressure regulation is connected by the gas outlet of test specimen air brake valve (82) with the 3rd with sealing test system (83).
2. tractor trailer air brake valve Performance Test System according to claim 1 is characterized in that: the air coarse filter (1) in described high-pressure air source device and the air brake valve input air pressure system (26) is connected in parallel by three-way connection and optical indicator (2) and air compressor (3) air intake opening; First motor (5) is connected in series by motor and air compressor coupling arrangement (4) and air compressor (3); First stop valve (6) one ends are connected with air compressor (3) gas outlet, and first stop valve (6) other end is connected with refrigeratory (7) air intake opening of electric fan cooling; Filtrator (8) air intake opening one end of band manual drainage separation vessel is connected with refrigeratory (7) gas outlet of electric fan cooling, and filtrator (8) other end gas outlet of band manual drainage separation vessel flows to reversible pressure regulator valve (9) air intake opening with first inside and is connected; Second stop valve (10) one ends flow to reversible pressure regulator valve (9) gas outlet with first inside and are connected, and second stop valve (10) other end is connected with big gas-holder (11) air intake opening; First rain glass (12) is installed on big gas-holder (11) top, and first draining valve (13) is installed in the bottom, and big gas-holder (11) gas outlet is connected with automatic draining fluid separator (14) air intake opening; Automatically draining fluid separator (14) gas outlet is connected in parallel by three-way connection and the 3rd stop valve (15) one ends and the 3rd retaining valve (25) air intake opening; The 3rd retaining valve (25) gas outlet is connected with the 7th stop valve (27) that dynamic perfromance power baric systerm and air brake valve are exported in the test macro (52); The 3rd stop valve (15) other end flows to reversible pressure regulator valve (16) air intake opening with second inside and is connected; Second inside flows to reversible pressure regulator valve (16) gas outlet and is connected in parallel by three-way connection and second rain glass (17) and middle gas-holder (18) air intake opening; Middle gas-holder (18) right lower quadrant is installed second draining valve (19), and middle gas-holder (18) gas outlet is connected with the 4th stop valve (20) one ends; The 4th stop valve (20) other end is connected in parallel with first retaining valve (21), second retaining valve (24), the 4th retaining valve (78) air intake opening respectively by four-way connection; The 5th stop valve (22) one ends are connected with first retaining valve (21) gas outlet, and the 5th stop valve (22) other end and second is connected by test specimen air brake valve (76) air intake opening; The 6th stop valve (23) one ends are connected with second retaining valve (24) gas outlet, and the 6th stop valve (23) other end is connected by test specimen air brake valve (53) air intake opening with first; The tenth stop valve (79) one ends are connected with the 4th retaining valve (78) gas outlet, and the tenth stop valve (79) other end is connected by test specimen air brake valve (82) air intake opening with the 3rd.
3. tractor trailer air brake valve Performance Test System according to claim 1, it is characterized in that: the 3rd inside in described dynamic perfromance power baric systerm and the air brake valve output test macro (52) flows to reversible pressure regulator valve (28) air intake opening and is connected with the 7th stop valve (27), and the 3rd inside flows to reversible pressure regulator valve (28) gas outlet and oil sprayer (29) air intake opening is connected in series; Pneumatic proportional flow speed control valve (30) air intake opening is connected with oil sprayer (29) gas outlet, and pneumatic proportional flow speed control valve (30) gas outlet and ratio two-position four-way directional control valve (31) air intake opening are connected in series; In two gas outlets of ratio two-position four-way directional control valve (31) one is connected in parallel with the first simulating signal pressure sensor output (32), the 3rd rain glass (33), single rod cylinder (34) rodless cavity of double acting, and another in two gas outlets of ratio two-position four-way directional control valve (31) and double acting list rod cylinder (34) rod chamber are connected; The piston rod while of the single rod cylinder of double acting (34) and cylinder and the first displacement transducer coupling arrangement (35) and cylinder and the first power sensor coupling arrangement (36) are connected in series; Cylinder is connected with first displacement transducer (39) with the first displacement transducer coupling arrangement (35), cylinder is connected with the first power sensor (37) with the first power sensor coupling arrangement (36), and first displacement transducer (39) is connected in parallel with the first power sensor (37); The first push rod coupling arrangement (38) upper end is connected with the first power sensor (37), and first push rod coupling arrangement (38) lower end is connected by test specimen air brake valve (53) push rod with first; First is connected in parallel by test specimen air brake valve (53) gas outlet and the second simulating signal pressure sensor output (40), the 4th rain glass (41) and three-way connection one end, and this three-way connection is connected in parallel with the 8th stop valve (42), the 9th stop valve (43) respectively at two ends in addition; The 9th stop valve (43) is connected in parallel with the first little cylinder (44) and second little cylinder (46) rodless cavity respectively by three-way connection; The first little cylinder (44) is connected with the second small cylinder piston throw of lever regulating device (47) with the first small cylinder piston throw of lever regulating device (45) respectively with second little cylinder (46) piston rod; The 8th stop valve (42) is connected in parallel with the first little gas-holder (48) and the second little gas-holder (50) respectively by three-way connection; The first little gas-holder (48) and second little gas-holder (50) right lower quadrant are installed the 3rd draining valve (49) and the 4th draining valve (51) respectively.
4. tractor trailer air brake valve Performance Test System according to claim 1, it is characterized in that: the hydraulic pressure coarse filter (66) in described static characteristics dynamicliquid pressure system and the air brake valve output test macro (77) is contained in the tractor trailer air brake valve Performance Test System internal hydraulic pressure fuel tank, and limited pressure variable vane pump (63) is installed in hydraulic reservoir and covers face; Be connected by oil pipe between hydraulic pressure coarse filter (66) and the limited pressure variable vane pump (63); Second motor (64) is connected in series by motor and vane pump coupling arrangement (65) and limited pressure variable vane pump (63); Hydraulic pressure fine filter (59) oil-in is connected with limited pressure variable vane pump (63) oil-out, and hydraulic pressure fine filter (59) oil-out is connected with lower floor integrated package oil-in with oil pipe; Electric-hydraulic proportion pilot operated compound relief valve (60) oil-in that is installed on lower floor's integrated package is communicated with lower floor integrated package oil-in by inner oil duct, and is communicated with by inner oil duct and the parallel connection of the electrohydraulic proportional velocity regulating valve that is installed in the upper strata integrated package (58) oil-in; Bi-bit bi-pass electromagnetism directional control valve (61) oil-in that is installed on lower floor's integrated package is communicated with electric-hydraulic proportion pilot operated compound relief valve (60) Remote hydraulic fluid port (K) by inner oil duct, and bi-bit bi-pass electromagnetism directional control valve (61) oil-out is communicated with direct-acting overflow valve (62) oil-in on being installed in lower floor's integrated package by inner oil duct; Electric-hydraulic proportion pilot operated compound relief valve (60) and direct-acting overflow valve (62) oil-out are communicated with by inner oil duct, and are connected with hydraulic reservoir with oil pipe; Electric-hydraulic proportion 3-position 4-way directional control valve (57) oil-in that is installed in the upper strata integrated package is communicated with electrohydraulic proportional velocity regulating valve (58) oil-out by inner oil duct, (57) oil-outs of electric-hydraulic proportion 3-position 4-way directional control valve by inner oil duct respectively with the hydraulic gage that is installed in the upper strata integrated package (56), simulating signal output hydraulic pressure sensor (55) oil-in, and be connected in parallel with oil pipe and double acting asymmetric servo cylinder (54) rodless cavity, another oil-out of electric-hydraulic proportion 3-position 4-way directional control valve (57) is connected with double acting asymmetric servo cylinder (54) rod chamber with oil pipe, and electric-hydraulic proportion 3-position 4-way directional control valve (57) oil return opening is communicated with electric-hydraulic proportion pilot operated compound relief valve (60) and direct-acting overflow valve (62) oil-out by inner oil duct; Double acting asymmetric servo cylinder (54) while and hydraulic cylinder and the second displacement transducer coupling arrangement (72) and hydraulic cylinder and the second power sensor coupling arrangement (73) are connected in series; Hydraulic cylinder is connected with second displacement transducer (71) with the second displacement transducer coupling arrangement (72), hydraulic cylinder is connected with the second power sensor (74) with the second power sensor coupling arrangement (73), and second displacement transducer (71) is in parallel with the second power sensor (74); The second push rod coupling arrangement (75) upper end is connected with the second power sensor (74), and second push rod coupling arrangement (75) lower end is connected by test specimen air brake valve (76) push rod with second; Second is connected in parallel by test specimen air brake valve (76) gas outlet and the 3rd simulating signal pressure sensor output (70), the 5th rain glass (69) and the 3rd little gas-holder (68) one ends, at the 3rd little gas-holder (68) bottom righthand side the 5th draining valve (67) is installed.
5. tractor trailer air brake valve Performance Test System according to claim 1, it is characterized in that: the leading screw operating means (80) in described air brake valve pressure regulation and the sealing test system (83) and leading screw push rod coupling arrangement (81) are installed in the 3rd by test specimen air brake valve (82) top, leading screw push rod coupling arrangement (81) is installed in leading screw operating means (80) inside, and leading screw push rod coupling arrangement (81) bottom is connected by test specimen air brake valve (82) push rod with the 3rd; The 3rd is connected in parallel by test specimen air brake valve (82) gas outlet and the 4th simulating signal pressure sensor output (84), the 6th rain glass (85) and the 4th little gas-holder (86) one ends, at the 4th little gas-holder (86) bottom righthand side the 6th draining valve (87) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320234562 CN203203772U (en) | 2013-05-03 | 2013-05-03 | Air brake valve performance testing system used for tractor trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320234562 CN203203772U (en) | 2013-05-03 | 2013-05-03 | Air brake valve performance testing system used for tractor trailer |
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| Publication Number | Publication Date |
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| CN203203772U true CN203203772U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320234562 Withdrawn - After Issue CN203203772U (en) | 2013-05-03 | 2013-05-03 | Air brake valve performance testing system used for tractor trailer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234718A (en) * | 2013-05-03 | 2013-08-07 | 南阳理工学院 | Performance testing system for air brake valve of tractor trailer |
| CN105181355A (en) * | 2015-10-08 | 2015-12-23 | 南阳理工学院 | Multifunctional testing device of air brake system of tractor transportation unit |
| CN106840553A (en) * | 2017-04-19 | 2017-06-13 | 南阳理工学院 | Tractor-trailer combinatios air brake valve multifunctional testing driving cylinder |
-
2013
- 2013-05-03 CN CN 201320234562 patent/CN203203772U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234718A (en) * | 2013-05-03 | 2013-08-07 | 南阳理工学院 | Performance testing system for air brake valve of tractor trailer |
| CN103234718B (en) * | 2013-05-03 | 2015-02-11 | 南阳理工学院 | Performance testing system for air brake valve of tractor trailer |
| CN105181355A (en) * | 2015-10-08 | 2015-12-23 | 南阳理工学院 | Multifunctional testing device of air brake system of tractor transportation unit |
| CN106840553A (en) * | 2017-04-19 | 2017-06-13 | 南阳理工学院 | Tractor-trailer combinatios air brake valve multifunctional testing driving cylinder |
| CN106840553B (en) * | 2017-04-19 | 2023-04-14 | 南阳理工学院 | Multifunctional testing driving cylinder for air brake valve of tractor transport unit |
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