CN207004984U - A kind of hydraulic automatic speed variator hydraulic valve block test system - Google Patents

A kind of hydraulic automatic speed variator hydraulic valve block test system Download PDF

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Publication number
CN207004984U
CN207004984U CN201720758352.2U CN201720758352U CN207004984U CN 207004984 U CN207004984 U CN 207004984U CN 201720758352 U CN201720758352 U CN 201720758352U CN 207004984 U CN207004984 U CN 207004984U
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China
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oil
valve
hydraulic
oil inlet
torque
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Active
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CN201720758352.2U
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Chinese (zh)
Inventor
林勇
程龙
李珺
许明中
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Shaanxi Fast Gear Co Ltd
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Shaanxi Fast Gear Co Ltd
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Abstract

It the utility model is related to a kind of hydraulic automatic speed variator hydraulic valve block test system,The oil-out of hydraulic power unit is connected respectively with cleaner analogue unit and filtering by-pass port,Cleaner analogue unit is connected with the main oil inlet of tested hydraulic valve block,The oil inlet and oil-out of fluid torque-converter analogue unit are connected with torque-converters oil inlet and torque-converters oil return opening respectively,The oil inlet of lubricating system analogue unit is connected with lubrication oil inlet and lubrication bypass oil inlet,The oil-out of lubricating system analogue unit is connected with the return line of lubrication bypass oil-out and hydraulic power unit,Oil-out of the entrance of lubricating system bypass control unit and fluid torque-converter bypass control unit with hydraulic power unit is connected,Lubricating system bypass control unit exports to be connected with lubrication pilot port,The outlet of fluid torque-converter bypass control unit is connected with torque-converters pilot port.The utility model can solve the problem that the problem of individually test hydraulic automatic speed variator hydraulic valve block.

Description

A kind of hydraulic automatic speed variator hydraulic valve block test system
【Technical field】
The utility model belongs to hydraulic automatic speed variator technical field, and in particular to a kind of hydraulic automatic speed variator hydraulic valve Block test system.
【Background technology】
With the continuous social and economic development, requirement of the people to the economical of vehicle, dynamic property, comfortableness and discharge Also more and more higher, speed changer is as the key factor for influenceing vehicle performance, and farthest automation also just becomes people for it The target pursued.Automatic transmission is according to the factor self shifter such as throttle opening, speed and living load, without manpower Control is manipulated, it can make vehicle starting steady, smooth gear shifting, easy to operate, make driving more free and relaxed.
Hydraulic automatic speed variator is assembly indispensable in vehicle dynamical system, plays passing power, and speed change becomes the effect turned round, While and self shifter, the labor intensity for not only having alleviated driver but also the comfortableness and reliability that improve gearshift.Hydraulic valve block Parts of the assembly as most critical in hydraulic automatic speed variator, directly affect the gearshift performance and product of hydraulic automatic speed variator Matter, to lubrication of complete machine etc., other performances also play decisive role, and the quality of its performance directly affects hydraulic automatic speed variator Performance.
The country is also without a set of method of testing referred to for hydraulic automatic speed variator hydraulic valve block, overseas enterprise at present The test to this respect maintains secrecy again, therefore just needs autonomous Design to go out hydraulic automatic speed variator hydraulic valve block test system.
【Utility model content】
To solve problems of the prior art, the purpose of this utility model is to provide a kind of hydraulic automatic speed variator Hydraulic valve block test system, for solving the problems, such as individually to test hydraulic automatic speed variator hydraulic valve block.
The purpose of this utility model is achieved through the following technical solutions:
A kind of hydraulic automatic speed variator hydraulic valve block test system, including hydraulic power unit, cleaner analogue unit, liquid Power torque-converters analogue unit, lubricating system analogue unit, lubricating system bypass control unit and fluid torque-converter by-pass governing list Member, it is tested on hydraulic valve block and offers the main oil inlet of tested hydraulic valve block, torque-converters oil inlet, torque-converters oil return opening, profit Slide into hydraulic fluid port, lubrication bypass oil inlet, lubrication bypass oil-out, lubrication pilot port, filtering by-pass port and torque-converters pilot port, liquid The oil-out of pressure power unit is connected respectively with cleaner analogue unit and filtering by-pass port, and cleaner analogue unit is with being tested The connection of hydraulic valve block main oil inlet, the oil inlet and oil-out of fluid torque-converter analogue unit respectively with torque-converters oil inlet and change Square device oil return opening is connected, and the oil inlet of lubricating system analogue unit is connected with lubrication oil inlet and lubrication bypass oil inlet, is lubricated The oil-out of system simulation unit is connected with the return line of lubrication bypass oil-out and hydraulic power unit, by lubricating system The entrance of logical control unit and fluid torque-converter bypass control unit is connected with the oil-out of hydraulic power unit, lubricating system Bypass control unit exports to be connected with lubrication pilot port, and outlet and the torque-converters pilot port of fluid torque-converter bypass control unit connect Connect.
The hydraulic power unit includes oil pump, and the entrance of oil pump is connected by filter core with fuel tank, the outlet connection of oil pump There is overflow valve, the outlet of oil pump is connected with reversal valve, and the outlet of reversal valve is connected with check valve, and the outlet of check valve is sequentially connected There are directional control valve, first pressure sensor and first flowmeter, the outlet of directional control valve is connected with overflow valve, the overflow valve Outlet be also connected by by-passing valve with the outlet for having check valve, the outlet of first flowmeter and cleaner analogue unit and filtering By-pass port connects respectively, and the entrance of filtering by-pass port is provided with flowmeter.
The hydraulic power unit be provided with self-loopa cleaning loop, self-loopa cleaning loop include oil pump and with the oil pump phase Filter core even, the oil inlet of the oil pump are connected with the oil inlet of the filter core with mailbox.
The cleaner analogue unit includes the first proportional reversing valve, the oil inlet and hydraulic power of the first proportional reversing valve The oil-out connection of unit, the oil-out of the first proportional reversing valve are connected with the main oil inlet of tested hydraulic valve block, the first ratio Second pressure sensor is provided between the oil-out of reversal valve and the main oil inlet of tested hydraulic valve block.
The fluid torque-converter analogue unit includes the second proportional reversing valve, the oil inlet and bending moment of the second proportional reversing valve Device oil inlet is connected, and flowmeter, torque-converters oil inlet are provided between torque-converters oil inlet and the oil inlet of the second proportional reversing valve The 3rd pressure sensor is provided between the flowmeter, the oil-out of the second proportional reversing valve is connected with torque-converters oil return opening, the First pressure sensor is provided between the oil-out and torque-converters oil return opening of two proportional reversing valves.
The lubricating system analogue unit includes the 3rd proportional reversing valve, lubrication oil inlet and lubrication bypass oil inlet with The oil inlet connection of 3rd proportional reversing valve, outlet and lubrication bypass oil-out and the hydraulic power list of the 3rd proportional reversing valve The return line connection of member, pressure sensor is provided between lubrication bypass oil inlet and the oil inlet of the 3rd proportional reversing valve, the Flowmeter is provided between the outlet lubrication bypass oil-out of three proportional reversing valves.
The lubricating system bypass control unit includes the first direction control valve being connected with lubrication pilot port, first direction The oil inlet of control valve is connected with the first pressure-reducing valve, and the guide's oil circuit of the first pressure-reducing valve and the oil-out of hydraulic power unit connect Connect, lubricate and be provided with pressure sensor between pilot port and first direction control valve.
The fluid torque-converter bypass control unit includes the second direction control valve that is connected with torque-converters pilot port, and second The oil inlet of directional control valve is connected with the second pressure-reducing valve, the guide's oil circuit of second direction control valve and going out for hydraulic power unit Hydraulic fluid port is connected, and pressure sensor is provided between torque-converters pilot port and second direction control valve.
The utility model has the advantages that:
Hydraulic automatic speed variator hydraulic valve block test system of the present utility model is by hydraulic power unit to whole test System establishes required pressure, and according to testing requirement, adjusts pressure, also whole test system fluid is filtered, keep The cleannes of fluid;The fluid that hydraulic power unit flows back to test system is collected, and improves the utilization rate of fluid;Cleaner Analogue unit main analog speed changer filter restriction completes its function with not blocking two kinds of operating modes;Fluid torque-converter simulation is single Member carries out two kinds of Work condition analogues of torque-converters in hydraulic automatic speed variator:Bending moment operating mode (hydraulic power), (machinery passes locking operating mode It is dynamic);Lubricating system of the lubricating system analogue unit main analog speed changer under high gear and low gear;Lubricating system bypass control Unit processed mainly carries out triggering control to high gear in lubricating system analogue unit and low gear lubrication operating mode;By fluid torque-converter Logical control unit mainly carries out triggering control to bending moment operating mode in fluid torque-converter analogue unit and locking operating mode;The utility model Pass through hydraulic power unit, cleaner analogue unit, fluid torque-converter analogue unit, lubricating system analogue unit, lubricating system Bypass control unit and fluid torque-converter bypass control unit can simulate real Hydrodynamic transmission assembly, it is not necessary to hydraulic valve Block is attached to hydraulic automatic speed variator assembly, but directly hydraulic valve block is tested, and saves time and cost, more can be accurate The problem of confirming hydraulic valve block, improve the testing efficiency of hydraulic valve block;Hydraulic Elements in each module are connected by pipeline, and It can individually set up, during specific use, need to design different frocks for different tested hydraulic valve blocks, according to The topology layout of tested hydraulic valve block sets corresponding pipe interface in the frock, then each involved by this patent Module accesses corresponding interface.
【Brief description of the drawings】
Fig. 1 is hydraulic automatic speed variator hydraulic valve block test system schematic diagram;
Fig. 2 is the utility model hydraulic power unit A schematic diagrames;
Fig. 3 is the utility model cleaner analogue unit B schematic diagrames;
Fig. 4 is the utility model fluid torque-converter analogue unit and fluid torque-converter bypass control unit schematic diagram;
Fig. 5 is the utility model lubricating system analogue unit and lubricating system bypass control unit schematic diagram;
Wherein, A- hydraulic power units, B- cleaner analogue units, C- fluid torque-converter analogue units, D- lubricating systems Analogue unit, E- lubricating system bypass control units, F- fluid torque-converter bypass control units, G- are tested hydraulic valve block, a- The main oil inlet of tested hydraulic valve block, b- torque-converters oil inlets, c- torque-converters oil return openings, d- lubrication oil inlets, e- lubrication bypass Oil inlet, f- lubrication bypass oil-outs, g- lubrication pilot ports, h- filtering by-pass ports, i- torque-converters pilot ports, 1- oil pumps, 2- filters Core, 3- overflow valves, 4- reversal valves, 5- check valves, 6- directional control valves, 7- by-passing valves, 8- first flowmeters, the ratios of 9- first are changed Passed to valve, the proportional reversing valves of 9-1- second, the proportional reversing valves of 9-2- the 3rd, 10- first pressure sensors, 10-1- second pressures Sensor, the pressure sensors of 10-2- the 3rd, the pressure sensors of 10-3- the 4th, 11- first direction control valves, 11-1- second directions Control valve, the pressure-reducing valves of 12- first, the pressure-reducing valves of 12-1- second.
【Embodiment】
The utility model is further described below in conjunction with the accompanying drawings.
As shown in figure 1, hydraulic automatic speed variator hydraulic valve block test system of the present utility model, including hydraulic power unit A, cleaner analogue unit B, fluid torque-converter analogue unit C, lubricating system analogue unit D, lubricating system bypass control unit E With fluid torque-converter bypass control unit F, it is tested on hydraulic valve block G and offers the main oil inlet a of tested hydraulic valve block, bending moment Device oil inlet b, torque-converters oil return opening c, lubrication oil inlet d, lubrication bypass oil inlet e, lubrication bypass oil-out f, lubrication guide By mouth g, filtering by-pass port h and torque-converters pilot port i, hydraulic power unit A oil-out and cleaner analogue unit B and filtering Port h is connected respectively, and cleaner analogue unit B is connected with the main oil inlet a of tested hydraulic valve block, fluid torque-converter analogue unit C oil inlet and oil-out is connected with torque-converters oil inlet b and torque-converters oil return opening c respectively, and lubricating system analogue unit D's enters Hydraulic fluid port is connected with lubrication oil inlet d and lubrication bypass oil inlet e, and lubricating system analogue unit D oil-out bypasses out with lubrication Hydraulic fluid port f and hydraulic power unit A return line connect, lubricating system bypass control unit E and fluid torque-converter bypass control Oil-out of the entrance of unit F processed with hydraulic power unit A is connected, and lubricating system bypass control unit E outlets and lubrication are first A mouthful g connections are led, fluid torque-converter bypass control unit F outlet is connected with torque-converters pilot port i.
As shown in Fig. 2 including oil pump 1 with reference to Fig. 1, hydraulic power unit A of the present utility model, the entrance of oil pump 1 passes through Filter core 2 is connected with fuel tank, and the outlet of oil pump 1 is connected with overflow valve 3, and the outlet of oil pump 1 is connected with reversal valve 4, and reversal valve 4 goes out Mouth is connected with check valve 5, and the outlet of check valve 5 is connected with directional control valve 6, first pressure sensor 10 and first flow in turn Meter 8, the outlet of directional control valve 6 is connected with overflow valve, and the overflow valve is exported also by by-passing valve 7 with there is going out for check valve 5 Mouth connection, the outlet of first flowmeter 8 are connected respectively with cleaner analogue unit B and filtering by-pass port h, filtering by-pass port h's Entrance is provided with flowmeter, and hydraulic power unit A is provided with self-loopa cleaning loop, self-loopa cleaning loop include oil pump and with the oil The connected filter core of pump, the oil inlet of the oil pump are connected with the oil inlet of the filter core with mailbox.
As shown in figure 3, with reference to Fig. 1 and Fig. 2, cleaner analogue unit B of the present utility model includes the first proportional reversing valve 9, the oil inlet of the first proportional reversing valve 9 is connected with hydraulic power unit A oil-out, the oil-out of the first proportional reversing valve 9 It is connected with the main oil inlet a of tested hydraulic valve block, oil-out and the main oil inlet of tested hydraulic valve block of the first proportional reversing valve 9 Second pressure sensor 10-1 is provided between a.
As shown in figure 4, include the second proportional reversing valve 9- with reference to Fig. 1, fluid torque-converter analogue unit C of the present utility model 1, the second proportional reversing valve 9-1 oil inlet are connected with torque-converters oil inlet b, torque-converters oil inlet b and the second proportional reversing valve Flowmeter is provided between 9-1 oil inlet, the 3rd pressure sensor 10-2 is provided between torque-converters oil inlet b and the flowmeter, Second proportional reversing valve 9-1 oil-out is connected with torque-converters oil return opening c, the second proportional reversing valve 9-1 oil-out and bending moment The 4th pressure sensor 10-3 is provided between device oil return opening c;
Fluid torque-converter bypass control unit F includes the second direction control valve 11-1 being connected with torque-converters pilot port i, the Two directional control valve 11-1 oil inlet is connected with the second pressure-reducing valve 12-1, second direction control valve 11-1 guide's oil circuit and liquid Pressure power unit A oil-out connection, is provided with pressure sensor between torque-converters pilot port i and second direction control valve 11-1.
As shown in figure 5, include the 3rd proportional reversing valve 9-2 with reference to Fig. 1, lubricating system analogue unit D of the present utility model, The oil inlet of lubrication oil inlet d and lubrication bypass oil inlet e with the 3rd proportional reversing valve 9-2 is connected, the 3rd proportional reversing valve 9-2 outlet be connected with lubrication bypass oil-out f and hydraulic power unit A return line, is lubricated and is bypassed oil inlet e and the Pressure sensor is provided between three proportional reversing valve 9-2 oil inlet, the 3rd proportional reversing valve 9-2 outlet lubrication bypass is fuel-displaced Flowmeter is provided between mouth f;
Lubricating system bypass control unit E of the present utility model includes controlling with the first direction that lubrication pilot port g is connected Valve 11, the oil inlet of first direction control valve are connected with the first pressure-reducing valve 12, and the guide's oil circuit of the first pressure-reducing valve 12 is moved with hydraulic pressure Power unit A oil-out connection, lubricates and is provided with pressure sensor between pilot port g and first direction control valve 11.
As shown in Figures 1 to 5, the specific mistake of hydraulic automatic speed variator hydraulic valve block is tested by Tthe utility model system Journey is following (proportional reversing valve outlet is referred to as A mouths in standard-sized sheet, and B mouths are referred to as when fully closed):
Fluid is after hydraulic power unit A comes out, into cleaner analogue unit B, cleaner analogue unit B simulation speed changes Device filter restriction is not with blocking two kinds of operating modes, and when simulation filter restriction, fluid then passes through the B mouths of the first proportional reversing valve 9 Bypassed into the cleaner bypass branch in tested hydraulic valve block G;If simulation cleaner does not block, fluid is then by the The A mouths of one proportional reversing valve 9 enter tested hydraulic valve block G main pressure regulator valve;
The fluid come out from the main pressure regulator valve in tested hydraulic valve block G will determine according to torque-converters analogue unit C operating mode The whereabouts of stand oil liquid, if simulation bending moment operating mode, fluid enter fluid torque-converter analogue unit C, passes through the second proportional reversing valve 9-1 A mouths, tested hydraulic valve block G is come back to, pressure regulator valve is exported subsequently into tested hydraulic valve block G torque-converters;If It is locking operating mode, fluid enters fluid torque-converter analogue unit C, by the second proportional reversing valve 9-1 B mouths, made by the mouth Flow reduce;
Now, guide's fluid enters fluid torque-converter bypass control unit F, then through the second pressure-reducing valve 12-1 and second party Enter tested hydraulic valve block G to control valve 11-1, and then open the torque converter bypass valve inside tested hydraulic valve block so that In most of fluid that the second proportional reversing valve 9-1 B mouths are obstructed by the torque converter bypass valve inside tested hydraulic valve block Pressure regulator valve is exported into torque-converters;
Fluid is after tested hydraulic valve block G torque-converters outlet pressure regulator valve comes out, into lubricating system analogue unit D, if then lubricating status of the simulation speed changer in low gear, fluid flow back to fuel tank by the 3rd proportional reversing valve 9-2 A mouths; Lubricating status of the speed changer in high gear is such as simulated, fluid enters the 3rd proportional reversing valve 9-2 B mouths, and fluid damps in the mouth Larger, only seldom a part of flow enters with regard to oil return box, most flow in the presence of lubricating system bypass control unit E Enter tested hydraulic valve block G lubrication by-passing valve, then flow back to fuel tank;
Now guide's fluid, the profit of tested hydraulic valve block is entered by the first pressure-reducing valve 12 and first direction control valve 11 Sliding by-passing valve, to ensure that oil circuit is got through.
The course of work of whole test system is completed above, can be according to specific test request, to difference in actual test Test module is combined, and obtains different testing process, meets different hydraulic valve block assembly test requests.

Claims (8)

1. a kind of hydraulic automatic speed variator hydraulic valve block test system, it is characterised in that including hydraulic power unit (A), filtering Device analogue unit (B), fluid torque-converter analogue unit (C), lubricating system analogue unit (D), lubricating system bypass control unit (E) and fluid torque-converter bypass control unit (F), the main oil-feed of tested hydraulic valve block is offered on tested hydraulic valve block (G) Mouth (a), torque-converters oil inlet (b), torque-converters oil return opening (c), lubrication oil inlet (d), lubrication bypass oil inlet (e), lubrication side Pass-out hydraulic fluid port (f), lubrication pilot port (g), filtering by-pass port (h) and torque-converters pilot port (i), hydraulic power unit (A's) goes out Hydraulic fluid port is connected respectively with cleaner analogue unit (B) and filtering by-pass port (h), cleaner analogue unit (B) and tested hydraulic pressure The connection of valve block main oil inlet (a), the oil inlet and oil-out of fluid torque-converter analogue unit (C) respectively with torque-converters oil inlet (b) bypassed with torque-converters oil return opening (c) connection, oil inlet and the lubrication oil inlet (d) and lubrication of lubricating system analogue unit (D) Oil inlet (e) connects, oil-out and lubrication bypass oil-out (f) and the hydraulic power unit of lubricating system analogue unit (D) (A) entrance of return line connection, lubricating system bypass control unit (E) and fluid torque-converter bypass control unit (F) is equal It is connected with the oil-out of hydraulic power unit (A), lubricating system bypass control unit (E) outlet is connected with lubrication pilot port (g), The outlet of fluid torque-converter bypass control unit (F) is connected with torque-converters pilot port (i).
A kind of 2. hydraulic automatic speed variator hydraulic valve block test system according to claim 1, it is characterised in that the liquid Pressure power unit (A) includes oil pump (1), and the entrance of oil pump (1) is connected by filter core (2) with fuel tank, the outlet connection of oil pump (1) There is overflow valve (3), the outlet of oil pump (1) is connected with reversal valve (4), and the outlet of reversal valve (4) is connected with check valve (5), unidirectionally The outlet of valve (5) is connected with directional control valve (6), first pressure sensor (10) and first flowmeter (8), direction controlling in turn The outlet of valve (6) is connected with overflow valve, and the outlet of the overflow valve is also connected by by-passing valve (7) with the outlet for having check valve (5), The outlet of first flowmeter (8) is connected respectively with cleaner analogue unit (B) and filtering by-pass port (h), filtering by-pass port (h) Entrance is provided with flowmeter.
A kind of 3. hydraulic automatic speed variator hydraulic valve block test system according to claim 2, it is characterised in that the liquid Pressure power unit (A) is provided with self-loopa cleaning loop, and self-loopa cleaning loop includes oil pump and the filter core being connected with the oil pump, should The oil inlet of oil pump is connected with the oil inlet of the filter core with mailbox.
A kind of 4. hydraulic automatic speed variator hydraulic valve block test system according to claim 1, it is characterised in that the filter Clear device analogue unit (B) includes the first proportional reversing valve (9), the oil inlet and hydraulic power unit of the first proportional reversing valve (9) (A) oil-out connection, the oil-out of the first proportional reversing valve (9) are connected with the main oil inlet (a) of tested hydraulic valve block, and first Second pressure sensor (10- is provided between the oil-out of proportional reversing valve (9) and the main oil inlet (a) of tested hydraulic valve block 1)。
A kind of 5. hydraulic automatic speed variator hydraulic valve block test system according to claim 1, it is characterised in that the liquid Power torque-converters analogue unit (C) includes the second proportional reversing valve (9-1), the oil inlet and bending moment of the second proportional reversing valve (9-1) Device oil inlet (b) is connected, and flowmeter is provided between torque-converters oil inlet (b) and the oil inlet of the second proportional reversing valve (9-1), is become Be provided with the 3rd pressure sensor (10-2) between square device oil inlet (b) and the flowmeter, the second proportional reversing valve (9-1) it is fuel-displaced Mouth is connected with torque-converters oil return opening (c), is provided between the oil-out and torque-converters oil return opening (c) of the second proportional reversing valve (9-1) 4th pressure sensor (10-3).
A kind of 6. hydraulic automatic speed variator hydraulic valve block test system according to claim 1, it is characterised in that the profit Sliding system simulation unit (D) includes the 3rd proportional reversing valve (9-2), lubrication oil inlet (d) and lubricating bypass oil inlet (e) with The oil inlet connection of 3rd proportional reversing valve (9-2), outlet and the lubrication bypass oil-out (f) of the 3rd proportional reversing valve (9-2) And the return line connection of hydraulic power unit (A), lubrication bypass oil inlet (e) enter with the 3rd proportional reversing valve (9-2's) Pressure sensor is provided between hydraulic fluid port, flow is provided between the outlet lubrication bypass oil-out (f) of the 3rd proportional reversing valve (9-2) Meter.
A kind of 7. hydraulic automatic speed variator hydraulic valve block test system according to claim 1, it is characterised in that the profit Sliding system bypass control unit (E) includes the first direction control valve (11) being connected with lubrication pilot port (g), first direction control The oil inlet of valve is connected with the first pressure-reducing valve (12), the guide's oil circuit of the first pressure-reducing valve (12) and going out for hydraulic power unit (A) Hydraulic fluid port is connected, and pressure sensor is provided between lubrication pilot port (g) and first direction control valve (11).
A kind of 8. hydraulic automatic speed variator hydraulic valve block test system according to claim 1, it is characterised in that the liquid Power torque-converters bypass control unit (F) includes the second direction control valve (11-1) being connected with torque-converters pilot port (i), second party Be connected with the second pressure-reducing valve (12-1) to the oil inlet of control valve (11-1), the guide's oil circuit of second direction control valve (11-1) with The oil-out connection of hydraulic power unit (A), is provided with pressure between torque-converters pilot port (i) and second direction control valve (11-1) Sensor.
CN201720758352.2U 2017-06-27 2017-06-27 A kind of hydraulic automatic speed variator hydraulic valve block test system Active CN207004984U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720758352.2U CN207004984U (en) 2017-06-27 2017-06-27 A kind of hydraulic automatic speed variator hydraulic valve block test system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720758352.2U CN207004984U (en) 2017-06-27 2017-06-27 A kind of hydraulic automatic speed variator hydraulic valve block test system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107269625A (en) * 2017-06-27 2017-10-20 陕西法士特齿轮有限责任公司 A kind of hydraulic automatic speed variator hydraulic valve block test system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107269625A (en) * 2017-06-27 2017-10-20 陕西法士特齿轮有限责任公司 A kind of hydraulic automatic speed variator hydraulic valve block test system and method

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