CN108051192B - Self-changing gearbox valve body detection system - Google Patents

Self-changing gearbox valve body detection system Download PDF

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Publication number
CN108051192B
CN108051192B CN201711243852.3A CN201711243852A CN108051192B CN 108051192 B CN108051192 B CN 108051192B CN 201711243852 A CN201711243852 A CN 201711243852A CN 108051192 B CN108051192 B CN 108051192B
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valve
pressure
temperature
oil
flow
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CN108051192A (en
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孙景龙
陈家东
黄卫平
李浩凯
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Nanjing Chenguang Group Co Ltd
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Nanjing Chenguang Group Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The invention discloses a kind of self-changing gearbox valve body detection system, including pneumatic hydraulic system, TT&C system and stage body, pneumatic hydraulic system and TT&C system are arranged inside stage body;Pneumatic hydraulic system is mainly made of the gentle dynamic subsystem of hydraulic subsystem, for provide controllable pressure, flow, temperature tested media;TT&C system is used for parameter regulation, data acquisition and procession and the power distribution protection of pneumatic hydraulic system, setting operation control panel on stage body, for oil liquid temperature, operating pressure, flow to be adjusted.Detection system of the invention makes the temperature range of tested media more wide in range, and measurement accuracy and level of integrated system are high.

Description

Self-changing gearbox valve body detection system
Technical field
The present invention relates to gearbox valve body detection techniques, and in particular to a kind of self-changing gearbox valve body detection system.
Background technique
Self-changing gearbox valve body detection device (AT valve body test equipment, call detection facility for valve in the following text) For the components of automatic gear-box, the detection of valve body and TEHCM performance.It is provided for valve body test meets the steady of test needs The machine oil of constant-pressure, flow and temperature.Gearbox communication system (ETAS INCA) controls each electromagnetic valve work of gearbox, speed change Punch-out equipment oil respectively enters each oil duct, and ETAS data collection system records each oil duct pressure.Machine oil flows out after valve body oil duct, returns Receiving filtering can be recycled.
Existing self-changing gearbox valve body detection device is primarily present following deficiency: (1) temperature of tested media is not high; (2) pressure controling precision is not high under high temperature;(3) flow control accuracy is not high;(4) integrated level is low, the degree of automation is low.
Summary of the invention
The purpose of the present invention is to provide a kind of self-changing gearbox valve body detection systems.
Realize the technical solution of the object of the invention are as follows: a kind of self-changing gearbox valve body detection system, including Pneumatic hydraulic system System, TT&C system and stage body, pneumatic hydraulic system and TT&C system are arranged inside stage body;
Pneumatic hydraulic system is mainly made of the gentle dynamic subsystem of hydraulic subsystem, for providing controllable pressure, flow, temperature The tested media of degree;TT&C system is used for parameter regulation, data acquisition and procession and the power distribution protection of pneumatic hydraulic system, platform Setting operation control panel on body, for oil liquid temperature, operating pressure, flow to be adjusted.
Compared with prior art, the invention has the benefit that (1) tested media temperature range is more wide in range, precision is more It is high;(2) system integration is high, and pressure controling precision is higher;(3) output controllable pressure respectively reaches 5Mpa, 8Mpa, maximum stream flow Reach 90L/min, maximum temperature reaches 120 DEG C of working fluid, and the pressure stationary value of oil liquid, stability of flow value can be controlled accurately Within system 1%, the temperature stationary value of oil liquid is can be controlled within 2 DEG C.
Detailed description of the invention
Fig. 1 is pneumatic hydraulic system schematic diagram.
Fig. 2 is the schematic diagram of another direction of pneumatic hydraulic system shown in Fig. 1.
Fig. 3 is hydraulic separate systematic schematic diagram.
Fig. 4 is pneumatic subsystem schematic diagram.
Specific embodiment
A kind of self-changing gearbox valve body detection system, including pneumatic hydraulic system, TT&C system and stage body, Pneumatic hydraulic system System and TT&C system are arranged inside stage body;
Pneumatic hydraulic system is mainly made of the gentle dynamic subsystem of hydraulic subsystem, for providing controllable pressure, flow, temperature The tested media of degree;TT&C system is used for parameter regulation, data acquisition and procession and the power distribution protection of pneumatic hydraulic system, platform Setting operation control panel on body, for oil liquid temperature, operating pressure, flow to be adjusted.
Pneumatic hydraulic system quantity is two sets, is respectively used to the detection of GFE and CVT transmission valve body.
In conjunction with Fig. 1, Fig. 2, Fig. 3, the hydraulic subsystem is open system, mainly by fuel tank 1, main pump motor 2, oil suction Filter 3, high temperature blade pump 4, high pressure filter 5, proportional pressure control valve 10, proportional velocity regulating valve 11, pneumatic ball valve 12, flowmeter 13, Pressure sensor 14, temperature sensor 15, circulating pump 22, circulation motor 23, recursive filter 24, heater 25, cooler 26 It is formed with solenoid directional control valve 27;
When test, when system needs a stable constant pressure source, main pump motor 2 drives high temperature blade pump 4, will be in fuel tank 1 Oil liquid by oil absorption filter 3 suck high temperature blade pump 4, high temperature blade pump 4 outlet end by be connected to proportional pressure control valve 10, lead to Control proportional pressure control valve 10 is crossed, realizes controllable system output pressure, while major loop proportional velocity regulating valve 11 fully opens, is bypassed Pneumatic ball valve 12 completely closes, and system can provide a constant controllable pressure source at this time, completes the oil liquid of test, passes through oil return Disk returns to fuel tank;
When test, when system needs a stable constant-current source, main pump motor 2 drives high temperature blade pump 4, will be in fuel tank 1 Oil liquid by oil absorption filter 3 suck high temperature blade pump 4, high temperature blade pump 4 outlet end by be connected to proportional pressure control valve 10, this When the adjusting pressure of proportional pressure control valve 10 is higher than to the operating pressure of tested valve member, adjust the revolving speed of main pump motor 2, make the test be System output flow covers the flow working range of tested valve body, when required flow is greater than the set value, by working connection proportionality velocity modulation Valve 11, which is adjusted, arrives required flow;Bypass pneumatic ball valve 12 is closed, system provides constant traffic sources at this time;Needed for system Both flow is less than setting value, and bypass pneumatic ball valve 12 is opened, while adjusting working connection speed governing valve and bypass speed governing valve, until Reach regime flow, and realize that the flow of the difference of the two is equal to and test required flow, system provides valve body experimental test at this time The size in the high temperature pressure source of demand crossing current, flow is realized by major loop speed governing valve and bypass speed governing valve equal difference overflow manner;
System Oil-temperature control is realized by thermoregulating system, when needing to heat when oil temperature is relatively low, by high temperature conduit temperature sensing Device, the thermoregulating system that tank temperature sensor 15, heater 25 and circulating pump 22 are constituted realize heat temperature raising;Work as temperature drift When, high-temperature water cooling solenoid directional control valve 27 is opened, cooling water realizes the cooling to system oil temperature by cooling down device 26;High temperature leaf For the pressure oil of 4 output of piece pump by high pressure filter 5,12 high temperature oil pipe of pneumatic ball valve, output meets the high temperature oil of test requirements document Liquid;
Meter readings, pressure sensor readings are flow by measured workpiece, pressure, measurement feedback to survey Control system, then data processing and storage are carried out to measurement result by TT&C system.
1 bottom of fuel tank is equipped with footing, and fuel tank is surrounded by lifting lug;Fuel tank top is equipped with the oil drain pan with filter screen, test Oil flows back to fuel tank by oil drain pan after test valve member outflow, realizes the oil circulation of system;
It is provided with partition in fuel tank, oil suction, oil return are separated, air cleaner 21 is set on the venthole on fuel tank top, The pouring orifice of fuel tank injects oil liquid from pouring orifice through filter, guarantees that the oil liquid in injection fuel tank has certain pollution etc. Grade.
Tank bottoms beveling, gradient are 1/25~1/20, and sediment is promoted to gather the minimum point of fuel tank.? Fuel outlet is arranged in lowest part, and oil liquid and pollutant are smoothly flowed out from drain oil when enabling to change oil.Fuel tank top surface is equipped with cleaning window Mouthful, facilitate later maintenance to clean.
Oil level detection instrument and warning device are installed, not overflowed or be not able to satisfy with the oil ensured in fuel tank makes on fuel tank With requiring.
In conjunction with Fig. 4, pneumatic subsystem is mainly by gas source 30, three linked piece 31,5 way valve 33, cylinder manifold 32 and pipeline group At;
Three linked piece 31 is used to adjust the pressure, mist of oil amount and cleanliness of gas source 30, and 5 way valve 33 is hydraulic for controlling Pneumatic ball valve 12 in system, for controlling oil circuit on-off, 5 way valve 33 is mounted on cylinder manifold 32 pneumatic ball valve 12.
TT&C system is mainly made of power distribution unit, control unit, data acquisition and procession unit, by two kinds of oil liquid Circuit pressure, temperature and flow control, to provide two-way constant pressure and temperature hydraulic oil source;TT&C system is in control process The oil circuit pressure of acquisition storage in real time, temperature, flow and motor operating state.
Stage body is made of rack and oil mist recovering device;Oil mist recovering device is mainly by mist of oil dust removing purifier and air inlet/outlet Road composition, air inlet duct are arranged in Laboratory Module bottom, and the top of experimental cabin is arranged in exhaust passage.
Below with reference to embodiment and attached drawing, invention is further described in detail.
Embodiment
A kind of self-changing gearbox valve body detection system, including pneumatic hydraulic system, TT&C system and stage body, Pneumatic hydraulic system System and TT&C system are arranged inside stage body;
Pneumatic hydraulic system is mainly made of the gentle dynamic subsystem of hydraulic subsystem, for providing controllable pressure, flow, temperature The tested media of degree;TT&C system is used for parameter regulation, data acquisition and procession and the power distribution protection of pneumatic hydraulic system, platform Setting operation control panel on body, for oil liquid temperature, operating pressure, flow to be adjusted.
In conjunction with Fig. 1~3, the hydraulic subsystem be open system, including fuel tank 1, main pump motor 2, oil absorption filter 3, High temperature blade pump 4, high pressure filter 5, pulsation dampening 6, pressure meter switch 7, pressure gauge 8, safety valve 9, proportional pressure control valve 10, Proportional velocity regulating valve 11, pneumatic ball valve 12, flowmeter 13, pressure sensor 14, temperature sensor 15, temperature relay 16, cut-off Valve 17, liquid level relay meter 19, liquidometer 20, air cleaner 21, circulation 22, circulation motor 23, is circulated throughout quick-release connector 18 Filter 24, heater 25, cooler 26, solenoid directional control valve 27, cooling water filter 28 and shut-off valve 29;
The working principle of the detection facility for valve are as follows: when carrying out the test of assigned temperature, five-way valve 33.2, five-way valve 33.3 commutations, open high temperature hydropneumatic ball valve 12.2,12.3;System Oil-temperature control is realized by thermoregulating system, when oil temperature is relatively low When needing to heat, by high temperature conduit temperature sensor 15.1, tank temperature sensor 15.2, heater 25 and circulating pump 22 etc. The thermoregulating system of composition realizes heat temperature raising;When temperature drift, high-temperature water cooling solenoid directional control valve 27 is opened, cooling water passes through drop Warm cooler 26 realizes the cooling to system oil temperature.The pressure oil of 4 output of high temperature blade pump passes through high pressure filter 5, Pneumatic ball 12.3 high temperature oil pipe of valve, output meet the high-temperature oil liquid of test requirements document.
When test, when system needs a stable constant pressure source, main pump motor 2 drives high temperature blade pump 4, by double-layer heat insulation Oil liquid in fuel tank 1 sucks high temperature blade pump 4 by oil absorption filter 3.1, is connected to ratio by the outlet end of high temperature blade pump 4 and overflows Valve 10 is flowed, by controlling proportional pressure control valve 10, controllable system output pressure, while major loop proportional velocity regulating valve may be implemented 11.2 fully open, and bypass pneumatic ball valve 12.1,12.2 completely closes, and system can provide a constant controllable pressure at this time Source completes the oil liquid of test, returns to fuel tank by return tray.System pressure is adjusted from 0Mpa to the regulating time of full scale 500ms。
When test, when system needs a stable constant-current source, main pump motor 2 drives high temperature blade pump 4, by double-layer heat insulation Oil liquid in fuel tank 1 sucks high temperature blade pump 4 by oil absorption filter 3.1, is connected to ratio by the outlet end of high temperature blade pump 4 and overflows Valve 10 is flowed, the adjusting pressure of proportional pressure control valve 10 is suitably above to the operating pressure of tested valve member at this time, adjusts main pump motor 2 Revolving speed makes pilot system output flow cover the flow working range of tested valve body, when required flow is larger, by working connection tune Fast valve 11.2, which is adjusted, arrives required flow.Bypass ball valve 12.1 is closed, system provides constant traffic sources at this time;When system institute When needing flow smaller, stablize constant small flow to obtain one, bypass ball valve 12.1 is opened, while adjusting working connection tune Fast valve 11.2 and bypass speed governing valve 11.1 until the two reaches regime flow, and realize that the flow of the difference of the two is equal to test institute Flow is needed, system provides the high temperature pressure source of valve body experimental test demand crossing current at this time, and the size of flow passes through major loop tune Fast valve 11.2 is realized with bypass 11.1 equal difference overflow manner of speed governing valve.Flow system flow adjusts the adjusting to 90L/min from 0L/min Time is about 750ms, and the regulating time from 90L/min adjusting to 10L/min is about 650ms.
Safety valve is used to carry out oil circuit pressure overload protection, and pulsation dampening is used to carry out oil pump output oil liquid steady Pressure.
Meter readings, pressure sensor readings are flow by measured workpiece, pressure, measurement feedback to survey Control system, then data processing, storage are carried out to measurement result by TT&C system.Oil level detection instrument is installed on the fuel tank of equipment And warning device, requirement is not overflowed or is not able to satisfy with the oil ensured in fuel tank.
In conjunction with Fig. 4, pneumatic subsystem is mainly by gas source 30, three linked piece 31,5 way valve 33, cylinder manifold 32 and pipeline group At;
Three linked piece 31 is used to adjust the pressure, mist of oil amount and cleanliness of gas source 30, and 5 way valve 33 is hydraulic for controlling Pneumatic ball valve 12 in system, for controlling oil circuit on-off, 5 way valve 33 is mounted on cylinder manifold 32 pneumatic ball valve 12.
Pneumatic hydraulic system has two sets, while being suitable for GFE (Dex VI), CVT, can independently carry out test job.Every set Pneumatic hydraulic system is equipped with 2 quick couplings, and output controllable pressure respectively reaches 5Mpa, 8Mpa, and maximum stream flow reaches 90L/ Min, maximum temperature reach 120 DEG C of working fluid, and the pressure stationary value of oil liquid, stability of flow value accurately control 1% with Interior, the temperature stationary value of oil liquid is can be controlled within 2 DEG C.
The above, the only detailed description of the invention patent content, it is noted that any to be familiar with those skilled in the art For member in the technical scope disclosed by the invention patent, any changes or substitutions that can be easily thought of, should all cover in the invention patent Protection scope within.

Claims (4)

1. a kind of self-changing gearbox valve body detection system, which is characterized in that including pneumatic hydraulic system, TT&C system and stage body, Pneumatic hydraulic system and TT&C system are arranged inside stage body;
Pneumatic hydraulic system is mainly made of the gentle dynamic subsystem of hydraulic subsystem, for providing controllable pressure, flow, temperature Tested media;TT&C system is used for parameter regulation, data acquisition and procession and the power distribution protection of pneumatic hydraulic system, on stage body Setting operation control panel, for oil liquid temperature, operating pressure, flow to be adjusted;
The hydraulic subsystem is open system, including fuel tank (1), main pump motor (2), oil absorption filter (3), high temperature blade pump (4), high pressure filter (5), proportional pressure control valve (10), proportional velocity regulating valve (11), pneumatic ball valve (12), flowmeter (13), pressure Sensor (14), temperature sensor (15), circulating pump (22), circulation motor (23), recursive filter (24), heater (25), Cooler (26) and solenoid directional control valve (27);
When test, when system needs a stable constant pressure source, main pump motor (2) drives high temperature blade pump (4), by fuel tank (1) In oil liquid by oil absorption filter (3) suck high temperature blade pump (4), high temperature blade pump (4) outlet end by be connected to ratio overflow It flows valve (10), by controlling proportional pressure control valve (10), realizes controllable system output pressure, while major loop proportional velocity regulating valve (11) it fully opens, bypass pneumatic ball valve (12) completely closes, and system can provide a constant controllable pressure source at this time, completes The oil liquid of test returns to fuel tank (1) by return tray;
When test, when system needs a stable constant-current source, main pump motor (2) drives high temperature blade pump (4), by fuel tank (1) In oil liquid by oil absorption filter (3) suck high temperature blade pump (4), high temperature blade pump (4) outlet end by be connected to ratio overflow It flows valve (10), the adjusting pressure of proportional pressure control valve (10) is higher than to the operating pressure of tested valve member at this time, is adjusted main pump motor (2) Revolving speed, so that detection system output flow is covered the flow working range of tested valve body, when required flow is greater than the set value, will Working connection proportional velocity regulating valve (11), which is adjusted, arrives required flow;Bypass pneumatic ball valve (12) is closed, system provides constant at this time Traffic sources;The flow needed for system is less than setting value, bypass pneumatic ball valve (12) is opened, while adjusting working connection speed governing valve With bypass speed governing valve, until both the flow of difference that reaches regime flow, and both realize be equal to test needed for flow, be at this time System provides the high temperature pressure source of valve body experimental test demand crossing current, and the size of flow passes through major loop speed governing valve and bypass speed governing valve Equal difference overflow manner is realized;
When oil temperature needs to heat, by high temperature conduit temperature sensor, tank temperature sensor (15), heater (25) and circulation It pumps the thermoregulating system that (22) are constituted and carries out heat temperature raising;When temperature drift, open high-temperature water cooling solenoid directional control valve (27), it is cooling Water realizes the cooling to system oil temperature by cooling down device (26);The pressure oil of high temperature blade pump (4) output is pressed through by height Filter (5), pneumatic ball valve (12), high temperature oil pipe, output meet the high-temperature oil liquid of test requirements document;
Meter readings, pressure sensor readings are flow by measured workpiece, pressure, measurement feedback to observing and controlling system System, then data processing and storage are carried out to measurement result by TT&C system.
2. self-changing gearbox valve body detection system according to claim 1, which is characterized in that pneumatic hydraulic system quantity is Two sets, it is respectively used to the detection of GFE and CVT gearbox valve body.
3. self-changing gearbox valve body detection system according to claim 1, which is characterized in that pneumatic subsystem is mainly by gas Source (30), three linked piece (31), 5 way valve (33), cylinder manifold (32) and pipeline composition;
Three linked piece (31) is used to adjust the pressure, mist of oil amount and cleanliness of gas source (30), and 5 way valve (33) is for controlling gas Dynamic ball valve (12), for controlling oil circuit on-off, 5 way valve (33) is mounted on cylinder manifold (32) pneumatic ball valve (12).
4. self-changing gearbox valve body detection system according to claim 1, which is characterized in that TT&C system is mainly by distribution Unit, control unit, data acquisition and procession unit composition, by two kinds of oil liquid circuit pressures, temperature and flow control, with Two-way constant pressure and temperature hydraulic oil source are provided;TT&C system in control process in real time acquisition storage oil circuit pressure, temperature, Flow and motor operating state.
CN201711243852.3A 2017-11-30 2017-11-30 Self-changing gearbox valve body detection system Active CN108051192B (en)

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CN109269797B (en) * 2018-11-14 2020-09-11 湖北创偲诺电气科技股份有限公司 Automatic test equipment for delivery test of electromagnetic directional valve and working method thereof
CN110007702B (en) * 2019-03-31 2021-07-06 南京晨光集团有限责任公司 High-pressure and automatic-control aviation fuel test bed oil supply system
CN110259765B (en) * 2019-06-24 2020-11-27 哈尔滨工业大学 Visual experiment table for hydraulic valve performance detection
CN111237291B (en) * 2019-12-30 2021-07-13 南京晨光集团有限责任公司 Performance test stand for phosphate oil hydraulic oil tank

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3322143B2 (en) * 1996-11-12 2002-09-09 トヨタ自動車株式会社 Transmission testing equipment
JP2010160119A (en) * 2009-01-09 2010-07-22 Toyota Motor Corp Drive shaft support structure
CN103091086A (en) * 2011-11-08 2013-05-08 王晓琳 Drill experiment control and test system and method thereof
CN203365115U (en) * 2013-06-14 2013-12-25 厦门伍纵船舶液压技术有限公司 Hydraulic valve maintenance comparison test bench
CN204085862U (en) * 2014-08-21 2015-01-07 中国海洋石油总公司 Movable type hydraulic testing table distributed measurement and control system
CN106441739A (en) * 2016-08-31 2017-02-22 南京晨光集团有限责任公司 Comprehensive property test board for electrical modulation flow control valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3322143B2 (en) * 1996-11-12 2002-09-09 トヨタ自動車株式会社 Transmission testing equipment
JP2010160119A (en) * 2009-01-09 2010-07-22 Toyota Motor Corp Drive shaft support structure
CN103091086A (en) * 2011-11-08 2013-05-08 王晓琳 Drill experiment control and test system and method thereof
CN203365115U (en) * 2013-06-14 2013-12-25 厦门伍纵船舶液压技术有限公司 Hydraulic valve maintenance comparison test bench
CN204085862U (en) * 2014-08-21 2015-01-07 中国海洋石油总公司 Movable type hydraulic testing table distributed measurement and control system
CN106441739A (en) * 2016-08-31 2017-02-22 南京晨光集团有限责任公司 Comprehensive property test board for electrical modulation flow control valve

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