CN112729810B - Test assembly, test method and test system for gearbox oil pump and functional valve - Google Patents

Test assembly, test method and test system for gearbox oil pump and functional valve Download PDF

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Publication number
CN112729810B
CN112729810B CN202110337113.0A CN202110337113A CN112729810B CN 112729810 B CN112729810 B CN 112729810B CN 202110337113 A CN202110337113 A CN 202110337113A CN 112729810 B CN112729810 B CN 112729810B
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China
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oil
valve
way
test
pressure
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CN112729810A (en
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罗力成
罗力元
戚亚克
李栋梁
周宝海
尹洋
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Ningbo Shenglong Intelligent Automobile System Co ltd
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Ningbo Shenglong Intelligent Automobile System Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation

Abstract

The invention relates to a test assembly, a test method and a test system of a gearbox oil pump and a functional valve, which integrate the performance test of the gearbox oil pump and the performance test of the functional valve, wherein the invention adopts a calibration oil path to match and adapt to the pipe diameters of different gearbox oil pumps, so as to greatly simulate the real flow resistance of the gearbox oil pump after being installed in a gearbox and improve the detection accuracy of the gearbox; meanwhile, the dynamic oil pressure test oil path and the static oil pressure test oil path are adopted to simulate the working conditions of different flows, pressures and the like corresponding to all the functional valves on the gearbox oil pump when the gearbox oil pump is changed speed, so that the matching of the flow and the pressure of the gearbox is realized, the requirements of customers on various types of gearboxes are met, the real simulation test of all the functional valves on the oil pump is also realized, and the test precision is improved.

Description

Test assembly, test method and test system for gearbox oil pump and functional valve
Technical Field
The invention relates to the technical field of gearbox testing, in particular to a testing assembly, a testing method and a testing system for a gearbox oil pump and a functional valve.
Background
The gearbox is used as a core power input mechanism of an automobile, and the performance of the gearbox is crucial; in addition, the gearbox performance is unqualified, which easily causes major accidents, so the performance of the gearbox is generally detected before leaving the factory. The means for judging the performance index of the gearbox mainly comprises the performance test of a gearbox oil pump and the performance test of a functional valve.
Generally, when a performance test of a transmission oil pump is performed, a curve of a relationship between outlet pressure and flow of the transmission oil pump at different oil temperatures and different rotating speeds is tested, and then the curve is compared with a specified curve of a relationship between outlet pressure and flow of the transmission oil pump at different oil temperatures, so that whether the performance of the transmission oil pump meets a specified qualified requirement is obtained.
In a performance test of a gearbox oil pump, in order to simulate the real flow resistance of the gearbox oil pump as truly as possible, the flow of oil is changed by adjusting the size of an opening of a flow resistance valve through two adjustable flow resistance valves, so that the flow resistance of the gearbox oil pump is simulated truly; however, in many cases, especially under some limit conditions (such as low-temperature conditions), due to the difference between the testing device and the real flow resistance structure of the transmission oil pump, the performance of the transmission oil pump on the testing device and the actual performance of the transmission oil pump installed in the transmission still have great difference, so that the performance of the transmission oil pump cannot be accurately evaluated.
In addition, the performance detection of the existing transmission oil pump and the function valve is separately performed on two devices, and particularly, on the performance detection of the function valve, a specific test device needs to be designed for each function valve, so that the device universality is poor, and the production cost is increased; meanwhile, no matter the performance test of the gearbox oil pump or the performance test of the functional valve, the engine oil is sent to the gearbox oil pump and the functional valve of the gearbox after being improved to a certain pressure, the maximum range value of the gearbox oil pump or the functional valve can only be tested, the requirement of a user for fine adjustment matching according to different loads of the gearbox cannot be met, the working condition load of the gearbox under the real working state cannot be simulated, the accuracy of gearbox detection is reduced, and major accidents are easily caused due to unqualified gearbox performance detection.
Disclosure of Invention
The invention aims to provide a test assembly, a test method and a test system for a gearbox oil pump and a functional valve, and aims to solve the problems that the gearbox oil pump and the functional valve provided in the background art are low in test accuracy and cannot truly simulate the working condition load of the gearbox oil pump and the functional valve in a gearbox.
In order to achieve the above object, the present invention provides a first technical solution, which is a testing assembly for a variable speed oil pump and a functional valve, comprising:
the gearbox oil pump to be detected comprises an oil inlet and an oil outlet, a functional valve bank to be detected is arranged in the gearbox oil pump, and the functional valve bank comprises a first type of functional valve for detecting strong oil and weak oil needing to be dynamically switched and a second type of functional valve for detecting continuous oil supply;
the oil tank is provided with a temperature adjusting oil way capable of adjusting the temperature of oil in the oil tank;
the main driving motor is connected with the gearbox oil pump to extract and pressurize oil;
the body testing oil way comprises an oil inlet pipe and an oil outlet pipe, wherein one end of the oil inlet pipe is communicated with the oil inlet, one end of the oil outlet pipe is communicated with the oil outlet, and the other end of the oil inlet pipe and the other end of the oil outlet pipe are communicated with the oil tank; the oil outlet pipe is sequentially connected with a first pressure sensor, a first flowmeter and at least one regulating valve along the oil flowing direction, and a calibration mechanism capable of further regulating and matching the pipe diameter of the gearbox oil pump is connected in parallel at the position, corresponding to the regulating valve, on the oil outlet pipe; a second flowmeter is connected between the gearbox oil pump and the oil outlet pipe behind the first flowmeter, the second flowmeter is used for metering the flow passing through the gearbox oil pump, and when the gearbox oil pump leaks, the metering of the second flowmeter is less than that of the first flowmeter;
the valve testing oil path comprises a dynamic oil pressure testing oil path and a static oil pressure testing oil path, wherein the output end of the dynamic oil pressure testing oil path is connected with a first reversing valve, the output end of the first reversing valve is connected with a first type valve interface, the first type valve interface is communicated with a first type functional valve through a pipeline, and a third flowmeter is connected to the pipeline between the first type valve interface and the first type functional valve; the dynamic oil pressure test oil way comprises a strong impulse oil way and a weak impulse oil way, one end of the strong impulse oil way is communicated with the P end of the first reversing valve, one end of the weak impulse oil way is communicated with the T end of the first reversing valve, and the other end of the strong impulse oil way and the other end of the weak impulse oil way are communicated with the oil tank;
the input end of the static oil pressure test oil way is communicated with the oil tank, the output end of the static oil pressure test oil way is connected with a second reversing valve, the output port of the second reversing valve is connected with a second type valve interface, the second type valve interface is communicated with a second type function valve through a pipeline, and a fourth flowmeter is connected on the pipeline between the second type valve interface and the second type function valve;
the industrial computer is connected with a PLC control drive, and the PLC control drive is respectively connected and controlled with the gearbox oil pump, the functional valve group, the temperature adjusting oil way, the main driving motor, the body testing oil way, the calibration mechanism and the valve testing oil way.
Compared with the prior art, the gearbox oil pump and functional valve test assembly has the beneficial effects that: the invention integrates the performance test of the oil pump of the gearbox and the performance test of the functional valve, wherein the invention adopts a calibration mechanism to match and adapt to the pipe diameters of different oil pumps of the gearbox, thereby greatly simulating the real flow resistance of the oil pump of the gearbox when the oil pump of the gearbox is arranged in the gearbox and improving the detection accuracy of the gearbox; meanwhile, the dynamic oil pressure test oil path and the static oil pressure test oil path are adopted to simulate different flow and pressure working conditions corresponding to each functional valve on the gearbox oil pump when the gearbox oil pump shifts, so that matching of the flow and the pressure of the gearbox is realized, the requirements of customers on various types of gearboxes are met, real simulation test of each functional valve on the oil pump is also realized, and the test precision is improved.
Preferably, the calibration mechanism includes a calibration piece and a calibration oil path, wherein:
the calibration piece comprises an outer shell and an inner cavity piece which is arranged in the outer shell and can be extruded, a proportional valve body is arranged in the inner cavity piece, oil is filled in the inner cavity piece, a valve channel is formed in the proportional valve body, a first valve core capable of transversely displacing and a second valve core capable of longitudinally displacing are arranged in the valve channel, a first displacement sensor capable of sensing the displacement of the first valve core and a second displacement sensor capable of sensing the displacement of the second valve core are arranged in the proportional valve body, and the first displacement sensor and the second displacement sensor are connected with a PLC (programmable logic controller) in a driving mode;
the calibration oil path comprises a first adjusting oil path which can charge oil into the outer shell to extrude the inner cavity part, and a second adjusting oil path which is communicated with the proportional valve body to assist the displacement of the first valve core and the second valve core to adjust the cross-sectional area of the valve path.
Preferably, the outer shell is provided with a first oil inlet end and a first oil outlet end which are communicated with the inside of the outer shell, the first adjusting oil path comprises a first oil inlet path, a first oil outlet path, a third reversing valve and a first throttle valve, the first oil inlet path and the first oil outlet path are communicated with the oil tank, the first oil inlet path is communicated with the P end of the third reversing valve, the first oil outlet path is communicated with the T end of the third reversing valve, the first throttle valve is provided with a valve path A and a valve path B, the valve path A of the third reversing valve is communicated with the valve path A of the first throttle valve, the valve path B of the third reversing valve is communicated with the valve path B of the first throttle valve, and the valve path A and the valve path B of the first throttle valve are communicated with the first oil inlet end and the first oil outlet end of the outer shell respectively;
the proportional valve body is provided with a second oil inlet end and a second oil outlet end which are communicated with the valve channel corresponding to the first valve core; the proportional valve body is provided with a third oil inlet end and a third oil outlet end which are communicated with the valve channel corresponding to the second valve core; the second adjusting oil way comprises a second oil inlet way, a second oil outlet way and a fourth reversing valve, the second oil inlet way and the second oil outlet way are communicated with the oil tank, the second oil inlet way is communicated with the P end of the fourth reversing valve, the second oil outlet way is communicated with the T end of the fourth reversing valve, the A end of the fourth reversing valve is communicated with the second oil inlet end and the third oil inlet end through pipelines respectively, the B end of the fourth reversing valve is communicated with the second oil outlet end and the third oil outlet end through pipelines respectively, a fifth pressure sensor is connected to the A end pipeline of the fourth reversing valve, and a sixth pressure sensor is connected to the B end pipeline of the fourth reversing valve.
The first oil inlet path is sequentially connected with a fourth oil pump and an electric regulator along the oil flow direction, a second throttle valve is further connected between the first oil inlet path and the first oil outlet path, and the fourth oil pump is connected with a third driving motor;
a fifth oil pump, a fourth one-way valve, a pressure relief oil way and a high-pressure protection oil way are sequentially connected to the second oil inlet way, and the fifth oil pump is connected with a fourth driving motor; the pressure relief oil path is communicated with the oil tank, the pressure relief oil path is connected with a pressure relief valve and a pressure sensor, and the pressure relief oil path is also connected with an overflow valve connected with the pressure relief valve in parallel; the high-pressure protection oil circuit is communicated with the oil tank, the high-pressure protection oil circuit is connected with a flow valve and a thermometer, and the flow valve is also connected with a pressure valve; and the second oil inlet path and the second oil outlet path are respectively connected with a fifth flowmeter and a sixth flowmeter corresponding to the P end and the T end of the fourth reversing valve.
Preferably, the high-impulsive-force oil path is sequentially connected with a first oil pump, a first one-way valve, a second pressure sensor and a first energy accumulator along the flowing direction of oil, and the first oil pump is connected with a first driving motor;
the weak-impact oil path is sequentially connected with a second oil pump, a second one-way valve, a third pressure sensor and a second energy accumulator;
the static oil pressure test oil way is sequentially connected with a third oil pump, a third check valve, a fourth pressure sensor and a third energy accumulator along the flowing direction of oil, and the third oil pump is connected with a second driving motor.
Preferably, the valve test oil way further comprises an anti-overflow protection oil way, one end of the protection oil way is communicated with the oil tank, the protection oil way is connected with a hydraulic motor, the other end of the protection oil way is simultaneously connected with an oil way branch I, an oil way branch II and an oil way branch III, the oil way branch I is communicated with the strong-impulse oil way, the oil way branch I is further communicated with the T end of the second reversing valve, and the oil way branch I is connected with a first pressure regulating valve; the oil way branch II is communicated with the weak-impulse oil way, and a second pressure regulating valve is connected to the oil way branch II; and the oil way branch III is communicated with the static oil pressure test oil way, and a third pressure regulating valve is connected to the oil way branch III.
In addition, the oil tank comprises a first oil tank and a second oil tank which are communicated through an oil pipe, and the oil pipe is connected with an oil well pump; the body test oil way and the pipeline on the calibration oil way are communicated with the first oil tank, the pipeline on the valve test oil way and the pipeline on the protection oil way are communicated with the second oil tank, and meanwhile, filters are connected between the pipeline on the body test oil way and the first oil tank, between the pipeline on the valve test oil way and the second oil tank, between the protection oil way and the second oil tank, and between the oil pipe and the first oil tank and between the oil pipe and the second oil tank.
The temperature-adjusting oil way comprises a temperature-adjusting oil inlet pipe, a temperature-adjusting oil outlet pipe, a mold temperature controller and a temperature sensor, wherein the input end of the temperature-adjusting oil inlet pipe and the output end of the temperature-adjusting oil outlet pipe are both communicated with an oil tank, the temperature sensor is arranged in the oil tank, the temperature sensor is electrically connected with the mold temperature controller, the output end of the temperature-adjusting oil inlet pipe and the input end of the temperature-adjusting oil outlet pipe are respectively communicated with the input end and the output end of the mold temperature controller, and the temperature-adjusting oil inlet pipe is sequentially connected with a filter and a circulation auxiliary oil pump.
Preferably, the first type of function valve comprises a TCC (cross-section) valve, a VFS (vacuum-assisted valve), a driving valve, an execution pressure regulating valve and a TOC pressure regulating valve which are arranged in a transmission oil pump, and the second type of function valve comprises a cooling valve, a linear pipeline valve, a lubricating valve and a safety valve.
The second technical scheme provided by the invention is that the testing method of the gearbox oil pump and the functional valve based on the testing assembly comprises the following steps:
step 1, a mold temperature controller works to heat the oil temperature in a first oil tank to a set temperature, and an oil pump works to pump oil in the first oil tank into a second oil tank;
step 2, the gearbox oil pump to be detected is connected into the body test oil way, the functional valve bank to be detected in the gearbox oil pump is connected into the valve test oil way, and the performance test is carried out on the gearbox oil pump and the functional valve bank, and the method specifically comprises the following steps:
step 2.1, controlling the operation calibration mechanism or the regulating valve to debug the pipe diameter matched with the oil pump of the gearbox;
2.2, carrying out comprehensive performance test on the gearbox oil pump and the functional valve group through the body test oil way and the valve test oil way;
and 2.3, carrying out performance test on the functional valve bank in the gearbox oil pump through the valve test oil way.
Preferably: step 2.1 specifically includes regarding the pipe diameter that the gearbox oil pump that the oil circuit matches the adaptation of waiting to detect in the demarcation:
step 2.1.1, driving a fourth oil pump to operate by a third driving motor, and controlling a driving control electric regulator to regulate the flow of the first oil inlet path by a PLC (programmable logic controller);
step 2.1.2, electrifying the third reversing valve, communicating the P end with the A end of the third reversing valve, and filling oil into the outer shell to extrude the inner cavity piece, so that a quantitative load is generated inside the inner cavity piece;
step 2.1.3, driving a fourth driving motor to drive a fifth oil pump to operate, controlling a driving control flow valve and a pressure valve to adjust the pressure and the flow of a second oil inlet path and a second oil outlet path by a PLC (programmable logic controller), and controlling the driving to acquire flow values of a fifth flowmeter and a sixth flowmeter by the PLC;
step 2.1.4, electrifying the fourth reversing valve, communicating the P end and the B end of the fourth reversing valve, communicating the A end and the T end of the fourth reversing valve, and feeding oil into the proportional valve body from the second oil inlet end and the third oil inlet end respectively to ensure that the first valve core is transversely displaced and the second valve core is longitudinally displaced to change the size of a valve channel in the proportional valve body, so that the purpose of matching the pipe diameter of the oil pump of the gearbox is achieved;
the comprehensive performance test in the step 2.2 specifically comprises the following steps:
A1. and (3) voltage limiting performance testing: the PLC controls the drive to control the rotating speed of the main drive motor, and controls the variable of the regulating valve until the safety valve in the gearbox oil pump is opened, and the PLC controls the drive to acquire the pressure value of the first pressure sensor and the standard pressure value to judge;
B1. and (3) testing the pressure performance: the PLC controls the change of the rotating speed of the driving control total driving motor, so that flow and pressure change curves of the first flowmeter, the third flowmeter and the fourth flowmeter are collected under different pressures and are respectively judged with a standard flow and pressure curve;
C1. and (3) testing the flow performance: the industrial computer sends an instruction to the PLC control driver, the PLC control driver controls the change of the rotating speed of the total driving motor according to the instruction, the changes of the first flowmeter, the third flowmeter and the fourth flowmeter under corresponding pressures are collected under different rotating speeds and when rated flow is achieved, data processing and analysis are carried out through the industrial computer, and the changes are compared with a standard flow curve for judgment;
D1. manual performance testing: manually debugging the rotating speed of the total driving motor to reach a preset pressure, collecting flow values of the first flowmeter, the third flowmeter and the fourth flowmeter, comparing the flow values with a standard flow value, and performing data processing and analysis by an industrial computer; if the comparison is not consistent, calibrating by a calibration mechanism;
E1. high-speed oil filling test: the main driving motor is started and continuously accelerated within preset time, the regulating valve is regulated to a preset fixed value, and then a curve of pressure and flow is collected through the first flowmeter and the first pressure sensor; judging the relation between pressure and flow through a curve displayed by an industrial computer, and calculating the maximum efficiency and the reduction efficiency to confirm the point of high-speed oil filling;
the step 2.3 specifically comprises:
A2. an industrial computer issues a command to a PLC control drive control temperature-adjusting oil way to heat the oil to TaThe temperature sensor displays the temperature;
B2. opening a driving valve on a transmission oil pump; pressure P given VFS valve setting1Then, adjusting the oil way to a strong impulse oil way of a dynamic oil pressure test oil way; pressure P given TCC valve setting2Adjusting the oil way to a weak-impulse oil way of the dynamic oil pressure test oil way; closing the cooling valve to enable the cooling valve to have zero flow; the total driving motor is started to rotate to a set rotating speed; the PLC controls and drives the outlet pressure of the gearbox oil pump to be adjusted, and the body test oil way and the valve test oil way run together for a time T;
C2. the industrial computer records the test data;
PLC controls the drive control temperature-adjusting oil way to heat the oil to Tb；
E2. The industrial computer controls the PLC control drive, and the PLC control drive opens the drive valve; the total drive motor, the first drive motor and the second drive motor are gradually operated to enable the pressure value of the cooling valve to reach a preset value P3(ii) a The cooling valve is then adjusted to a predetermined flow value F1(ii) a Then the PLC controls and drives the valve test oil way to be switched to a static oil pressure test oil way;
F2. given pressure value P set for TCC valve4(ii) a Closing a valve body corresponding to an outlet of the gearbox oil pump to zero;
and G2, the PLC controls the drive to control the rotation speed of the total drive motor to be unchanged, and the industrial computer issues an instruction to control the PLC to control the drive to control the continuous change of the regulating valve.
Compared with the prior art, the testing method of the gearbox oil pump and the functional valve has the beneficial effects that: the testing method can simultaneously test the performance of the gearbox oil pump and the functional valve bank, and improves the testing efficiency of the gearbox oil pump and the functional valve bank; meanwhile, the pipe diameters of different transmission oil pumps can be matched and adapted quickly by a debugging method of the calibration oil way, and the detection accuracy of the transmission is improved.
The third technical scheme is that the testing system comprises a gearbox oil pump and a functional valve, the testing assembly comprises the gearbox oil pump and the functional valve, and further comprises a data acquisition module and a power supply module, wherein the industrial computer is electrically connected with a PLC (programmable logic controller) drive control and a main drive motor, the PLC drive control is electrically connected with a body testing oil way and a valve testing oil way respectively, the gearbox oil pump is connected on the body testing oil way, a functional valve group is connected on the valve testing oil way, the main drive motor is connected with the gearbox oil pump, and the data acquisition module is electrically connected with the body testing oil way and the valve testing oil way respectively.
Preferably, the data acquisition module is electrically connected with the first flowmeter, the second flowmeter, the first pressure sensor, the fifth flowmeter and the sixth flowmeter on the body test oil way; the data acquisition module is electrically connected with a third flowmeter, a fourth flowmeter, a second pressure sensor, a third pressure sensor and a fourth pressure sensor on the valve test oil way.
Compared with the prior art, the test system for the gearbox oil pump and the functional valve has the beneficial effects that: the testing system is convenient for a user to visually acquire the data result of the performance detection of the gearbox oil pump and the functional valve group, and is also convenient for operation.
Drawings
FIG. 1 is a schematic diagram of a test assembly;
FIG. 2 is a diagram of a calibration mechanism in a body test oil circuit;
FIG. 3 is a block diagram of the index;
FIG. 4 is a control diagram of the present test system.
In the figure: 1. a transmission oil pump; 2. an oil tank; 2.1, a first oil tank; 2.2, a second oil tank; 2.3, oil pipe; 2.4, oil well pump; 3. a temperature-adjusting oil path; 3.1, adjusting the temperature of an oil inlet pipe; 3.2, adjusting the temperature of the oil outlet pipe; 3.3, a mold temperature controller; 3.4, circulating an auxiliary oil pump; 3.5, a temperature sensor; 4. a total drive motor; 5. the body tests the oil circuit; 5.1, an oil inlet pipe; 5.2, an oil outlet pipe; 5.3, a first pressure sensor; 5.4, a first flow meter; 5.5, adjusting a valve; 5.6, calibrating the mechanism; 5.6.1, a calibration piece; 5.6.1.1, an outer shell; 5.6.1.2, a lumen element; 5.6.1.3, proportional valve body; 5.6.1.4, valve way; 5.6.1.5, a first valve spool; 5.6.1.6, a second spool; 5.6.1.7, a first displacement sensor; 5.6.1.8, a second displacement sensor; 5.6.2, calibrating an oil way; 5.6.2.1, a first adjusting oil path; 5.6.2.2, a second adjusting oil path; 5.7, a second flow meter; 6. a valve test oil circuit; 6.1, a dynamic oil pressure test oil way; 6.2, testing an oil way by using a static oil pressure; 6.3, a first reversing valve; 6.4, a first type valve interface; 6.5, a third flow meter; 6.6, a strong-impulse oil way; 6.7, a weak-impact oil way; 6.8, a second reversing valve; 6.9, a second type valve interface; 6.10, a fourth flow meter; 6.11, a first oil pump; 6.12, a first one-way valve; 6.13, a second pressure sensor; 6.14, a first accumulator; 6.15, a first driving motor; 6.16, a second oil pump; 6.17, a second one-way valve; 6.18, third pressure sensor; 6.19, a second accumulator; 6.20, a third oil pump; 6.21, a third one-way valve; 6.22, a fourth pressure sensor; 6.23, a third accumulator; 6.24, a second driving motor; 6.25, protecting an oil way; 6.26, hydraulic motor; 7. a filter; c1, a first oil inlet end; c2, a first oil outlet end; c3, a second oil inlet end; c4, a second oil outlet end; c5, third oil inlet end; c6, a third oil outlet end; d1, a first oil inlet path; d1.1, a fourth oil pump; d1.2, an electric regulator; d1.3, a second throttle valve; d1.4, a third driving motor; d2, a first oil outlet path; d3, a third reversing valve; d4, a first throttle valve; d5, a second oil inlet path; d5.1, a fifth oil pump; d5.2, a fourth one-way valve; d5.3, a pressure relief oil way; d5.3.1, a pressure relief valve; d5.3.2, a pressure sensor; d5.3.3, an overflow valve; d5.4, protecting an oil way at high pressure; d5.4.1, flow valves; d5.4.2, thermometer; d5.4.3, pressure valve; d5.5, a fourth driving motor; d6, a second oil outlet path; d7, a fourth reversing valve; d8, a fifth pressure sensor; d9, a sixth pressure sensor; d10, a fifth flow meter; d11, a sixth flow meter; s1, an oil way branch I; s1.1, a first pressure regulating valve; s2, an oil way branch II; s2.1, a second pressure regulating valve; s3, an oil way branch III; s3.1, a third pressure regulating valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a testing assembly for a transmission oil pump and a functional valve, comprising:
the gearbox oil pump 1 to be detected is used for providing circulating flowing power for oil inside a gearbox, the gearbox oil pump 1 comprises an oil inlet and an oil outlet, and the gearbox oil pump 1 is provided with a functional valve group to be detected;
the oil tank 2 is used for providing oil for the whole test assembly, and the oil tank 2 is provided with a temperature adjusting oil way 3 capable of adjusting the temperature of the oil in the oil tank 2; the oil tank 2 comprises a first oil tank 2.1 and a second oil tank 2.2, the first oil tank 2.1 and the second oil tank 2.2 are communicated through an oil pipe 2.3, and the oil pipe 2.3 is connected with an oil well pump 2.4;
a main drive motor 4 connected with the transmission oil pump 1 to pump and pressurize oil;
the body testing oil way 5 comprises an oil inlet pipe 5.1 and an oil outlet pipe 5.2, one end of the oil inlet pipe 5.1 is communicated with an oil inlet of the gearbox oil pump 1, one end of the oil outlet pipe 5.2 is communicated with an oil outlet, and the other end of the oil inlet pipe 5.1 and the other end of the oil outlet pipe 5.2 are communicated with the first oil tank 2.1 to take oil; the oil outlet pipe 5.2 is sequentially connected with a first pressure sensor 5.3, a first flowmeter 5.4 and at least one regulating valve 5.5 along the oil flowing direction, and the oil outlet pipe 5.2 is connected in parallel with a calibration mechanism 5.6 which can further regulate the pipe diameter matched with the gearbox oil pump 1 and corresponds to the regulating valve 5.5; a second flowmeter 5.7 which can sense the flow of the transmission oil pump 1 is connected between the transmission oil pump 1 and the oil outlet pipe 5.2 behind the first flowmeter 5.4, and the leakage condition of the transmission oil pump 1 can be detected by comparing the second flowmeter 5.7 with the first flowmeter 5.4;
valve test oil circuit 6, including dynamic oil pressure test oil circuit 6.1 and static oil pressure test oil circuit 6.2, wherein:
the output end of the dynamic oil pressure test oil way 6.1 is connected with a first reversing valve 6.3, the output end of the first reversing valve 6.3 is connected with a first type valve interface 6.4, the first type valve interface 6.4 is communicated with a first type functional valve through a pipeline, a third flow meter 6.5 is connected on the pipeline between the first type valve interface 6.4 and the first type functional valve, the dynamic oil pressure test oil way 6.1 comprises a strong impact oil way 6.6 and a weak impact oil way 6.7, one end of the strong impact oil way 6.6 is communicated with the P end of the first reversing valve 6.3, one end of the weak impact oil way 6.7 is communicated with the T end of the first reversing valve 6.3, and the other end of the strong impact oil way 6.6 and the other end of the weak impact oil way 6.7 are communicated with a second oil tank 2.2 to obtain oil; the high-impulsive-force oil way 6.6 is sequentially connected with a first oil pump 6.11, a first one-way valve 6.12, a second pressure sensor 6.13 and a first energy accumulator 6.14, and the first oil pump 6.11 is connected with a first driving motor 6.15; the weak-impact oil way 6.7 is sequentially connected with a second oil pump 6.16, a second one-way valve 6.17, a third pressure sensor 6.18 and a second energy accumulator 6.19;
the input end of the static oil pressure test oil way 6.2 is communicated with a second oil tank 2.2 for oil taking, the output end of the static oil pressure test oil way 6.2 is connected with a second reversing valve 6.8, the output end of the second reversing valve 6.8 is connected with a second type valve interface 6.9, the second type valve interface 6.9 is communicated with a second type function valve through a pipeline, and a fourth flowmeter 6.10 is connected on the pipeline between the second type function valve and the second type valve interface 6.9; the static oil pressure test oil path 6.2 is sequentially connected with a third oil pump 6.20, a third one-way valve 6.21, a fourth pressure sensor 6.22 and a third energy accumulator 6.23, and the third oil pump 6.20 is connected with a second driving motor 6.24;
the industrial computer is connected with a PLC control drive, and the PLC control drive is respectively connected and controlled with the gearbox oil pump 1, the functional valve group, the temperature adjusting oil way 3, the main drive motor 4, the body testing oil way 5, the calibration mechanism 5.6 and the valve testing oil way 6;
further, the calibration mechanism 5.6 includes a calibration piece 5.6.1 and a calibration oil path 5.6.2, wherein:
the marking piece 5.6.1 comprises an outer shell 5.6.1.1 and an inner cavity 5.6.1.2 which is arranged in the outer shell 5.6.1.1 and can be extruded, wherein a proportional valve body 5.6.1.3 is arranged in the inner cavity 5.6.1.2, oil is filled in the inner cavity 5.6.1.2, a valve channel 5.6.1.4 is arranged in the proportional valve body 5.6.1.3, a first valve core 5.6.1.5 which can transversely displace and a second valve core 5.6.1.6 which can longitudinally displace are arranged in the valve channel 5.6.1.4, a first displacement sensor 5.6.1.7 which can sense the displacement of the first valve core 5.6.1.5 and a second displacement sensor 5.6.1.8 which can sense the displacement of the second valve core 5.6.1.6 are arranged in the proportional valve body 5.6.1.3, and the first displacement sensor 5.6.1.7 and the second displacement sensor 5.6.1.8 are both in drive connection with the PLC;
the calibration oil path 5.6.2 comprises a first adjusting oil path 5.6.2.1 which can charge oil into the outer shell 5.6.1.1 to extrude the inner cavity piece 5.6.1.2, and a second adjusting oil path 5.6.2.2 which is connected with the proportional valve body 5.6.1.3 to assist the displacement of the first valve core 5.6.1.5 and the second valve core 5.6.1.6 to reach the area of the adjusting valve passage 5.6.1.4; wherein:
a first oil inlet end C1 and a first oil outlet end C2 which are communicated with the inside of the outer shell 5.6.1.1 are formed in the outer shell 5.6.1.1, the first adjusting oil path 5.6.2.1 comprises a first oil inlet path D1, a first oil outlet path D2, a third reversing valve D3 and a first throttle valve D4, the first oil inlet path D1 and the first oil outlet path D2 are communicated with a first oil tank 2.1 to take oil, the first oil inlet path D1 is communicated with the P end of the third reversing valve D3, the first oil outlet path D2 is communicated with the T end of the third reversing valve D3, the first throttle valve D4 is provided with an a valve path and a valve path B, the a end of the third reversing valve D3 is communicated with the a valve path a of the first throttle valve D4, the B end of the third reversing valve D3 is communicated with the B valve path of the first throttle valve D4, and the a valve path and the B valve path of the first throttle valve path D5.6.1.1 are communicated with the first oil inlet end C2 and the first throttle valve path 1C 4 of the outer shell 5.6.1.1 respectively; a fourth oil pump D1.1 and an electric regulator D1.2 capable of regulating flow are connected to the first oil inlet path D1 along the oil flow direction, a second throttle valve D1.3 is connected between the first oil inlet path D1 and the first oil outlet path D2, and a third driving motor D1.4 is connected to the fourth oil pump D1.1;
the proportional valve 5.6.1.3 is provided with a second oil inlet end C3 and a second oil outlet end C4 which are communicated with the valve passage 5.6.1.4 and correspond to the first valve core 5.6.1.5; the proportional valve 5.6.1.3 is provided with a third oil inlet end C5 and a third oil outlet end C6 corresponding to the second valve spool 5.6.1.6 and communicated with the valve passage 5.6.1.4; the second adjusting oil path 5.6.2.2 comprises a second oil inlet path D5, a second oil outlet path D6 and a fourth reversing valve D7, the second oil inlet path D5 and the second oil outlet path D6 are both communicated with the first oil tank 2.1, the second oil inlet path D5 is communicated with the P end of the fourth reversing valve D7, the second oil outlet path D6 is communicated with the T end of the fourth reversing valve D7, the a end of the fourth reversing valve D7 is respectively communicated with the second oil inlet end C3 and the third oil inlet end C5 through pipelines, the B end of the fourth reversing valve D7 is respectively communicated with the second oil outlet end C4 and the third oil outlet end C6 through pipelines, a fifth pressure sensor D8 is connected to the pipeline communicated with the a end of the fourth reversing valve D7, and a sixth pressure sensor D9 is connected to the pipeline communicated with the B end of the fourth reversing valve D7; the second oil inlet path D5 is connected with a fifth oil pump D5.1, a fourth check valve D5.2, a pressure relief oil path D5.3 and a high-pressure protection oil path D5.4, the fifth oil pump D5.1 is connected with a fourth drive motor D5.5, the pressure relief oil path D5.3 is connected with the first oil tank 2.1, the pressure relief oil path D5.3 is connected with a pressure relief valve D5.3.1 and a pressure sensor D5.3.2, and the pressure relief oil path D5.3 is further connected with an overflow valve D5.3.3 connected with the pressure relief valve D5.3.1 in parallel; the high-pressure protection oil way D5.4 is communicated with the first oil tank 2.1, the high-pressure protection oil way D5.4 is connected with a flow valve D5.4.1 and a thermometer D5.4.2, and the flow valve D5.4.1 is also connected with a pressure valve D5.4.3; the P end and the T end of the fourth reversing valve D7 are respectively connected with a fifth flowmeter D10 and a sixth flowmeter D11, and the pressure can be timely relieved when the pressure of the second adjusting oil path 5.6.2.2 is too high or too high through a high-pressure protection oil path D5.4, so that the effect of protecting the second adjusting oil path 5.6.2.2 is achieved; the pressure relief valve D5.3.1 in the pressure relief oil path D5.3 can provide a function of rapid pressure relief, and the effect of high-frequency dynamic response is realized; spill valve D5.3.3 is used for normal pressure relief operations.
The load of an inner cavity element 5.6.1.2 in an outer shell 5.6.1.1 is adjusted through a first adjusting oil way 5.6.2.1, then the cross-sectional area of a valve channel 5.6.1.4 is adjusted through a second adjusting oil way 5.6.2.2, the relation among calibration pressure, displacement and flow is realized through the matching of a first adjusting oil way 5.6.2.1 and a second adjusting oil way 5.6.2.2, and the area of the valve channel 5.6.1.4 in a proportional valve body 5.6.1.3 is adjusted to adapt to the pipe diameters of different transmission oil pumps in a matching manner; meanwhile, the calibration mechanism 5.6 of the invention can also solve the original error caused by temperature, and the mechanical abrasion degree of the proportional valve 5.6.1.3 after long-term use can be confirmed by the figures of pressure, flow and displacement.
In addition, smooth pressurization of the first adjusting oil path 5.6.2.1 can also simulate the idle load of the gearbox, and the condition that the gearbox cannot be matched due to the idle problem is better solved; the second adjusting oil path 5.6.2.2 can accurately know the error of the proportional valve 5.6.1.3 through the relation of pressure, flow and displacement, and the adjusting precision can be greatly improved after the conversion of the calibration mechanism 5.6, so that the customer satisfaction is improved.
Furthermore, the valve test oil path 6 further comprises an anti-overflow protection oil path 6.25, one end of the protection oil path 6.25 is communicated with the oil tank 2, the protection oil path 6.25 is connected with a hydraulic motor 6.26, the other end of the protection oil path 6.25 is simultaneously connected with an oil path branch I S1, an oil path branch II S2 and an oil path branch III S3, wherein the oil path branch I S1 is communicated with the strong-impulsive force oil path 6.6, the oil path branch I S1 is also communicated with the T end of a second reversing valve 6.8, and the oil path branch I S1 is connected with a first pressure regulating valve S1.1; the oil way branch IIS 2 is communicated with the weak-impulse oil way 6.7, and a second pressure regulating valve S2.1 is connected to the oil way branch IIS 2; the oil path branch III S3 is communicated with the static oil test oil path 6.2, and a third pressure regulating valve S3.1 is connected to the oil path branch III S3.
Further, the oil circuit 3 that adjusts the temperature is including adjusting the temperature and advancing oil pipe 3.1, adjusting the temperature and go out oil pipe 3.2, mould temperature ware 3.3, temperature sensor 3.5, the input that advances oil pipe 3.1 that adjusts the temperature, the output that goes out oil pipe 3.2 that adjusts the temperature all put through with oil tank 2, temperature sensor 3.5 establishes in oil tank 2, and this temperature sensor 3.5 is connected with mould temperature ware 3.3 electricity, and the output that advances oil pipe 3.1 that adjusts the temperature, the input that goes out oil pipe 3.2 that adjusts the temperature are connected with mould temperature ware 3.3 respectively, just it has connect gradually filter 7, circulation auxiliary oil pump 3.4 on advancing oil pipe 3.1 to adjust the temperature.
Meanwhile, filters 7 are connected between the pipeline on the body testing oil path 5 and the first oil tank 2.1, between the pipeline on the valve testing oil path 6 and the second oil tank 2.2, between the protection oil path 6.25 and the second oil tank 2.2, and between the oil pipe 2.3 and the first oil tank 2.1 and the second oil tank 2.2.
The invention also provides a test method of the gearbox oil pump and the functional valve based on the test assembly, which comprises the following steps:
step 1, a mold temperature controller works to heat the oil temperature in a first oil tank to a set temperature, and an oil pump works to pump oil in the first oil tank into a second oil tank;
step 2, the gearbox oil pump to be detected is connected into the body test oil way, the functional valve bank to be detected in the gearbox oil pump is connected into the valve test oil way, and the performance test is carried out on the gearbox oil pump and the functional valve bank, and the method specifically comprises the following steps:
step 2.1, controlling the operation calibration mechanism or the regulating valve to debug and match the pipe diameter matched with the gearbox oil pump;
2.2, carrying out comprehensive performance test on the gearbox oil pump and the functional valve group through the body test oil way and the valve test oil way;
and 2.3, carrying out performance test on the functional valve bank in the gearbox oil pump through the valve test oil way.
The debugging of the calibration structure in step 2.1 specifically includes:
step 2.1 specifically includes regarding the pipe diameter that the gearbox oil pump that the oil circuit matches the adaptation of waiting to detect in the demarcation:
step 2.1.1, driving a fourth oil pump to operate by a third driving motor, and controlling a driving control electric regulator to regulate the flow of the first oil inlet path by a PLC (programmable logic controller);
step 2.1.2, electrifying the third reversing valve, communicating the P end with the A end of the third reversing valve, and filling oil into the outer shell to extrude the inner cavity piece, so that a quantitative load is generated inside the inner cavity piece; if the third reversing valve is not electrified, the P end and the T end of the third reversing valve are communicated, and the A end and the B end of the third reversing valve are communicated; the second throttle valve can adjust the return speed of the first adjusting oil way, and the first throttle valve can adjust the flow, so that the outlet flow and the pressure of the valve passage A and the valve passage B reach preset values;
step 2.1.3, driving a fourth driving motor to drive a fifth oil pump to operate, controlling a driving control flow valve and a pressure valve to adjust the pressure and the flow of a second oil inlet path and a second oil outlet path by a PLC (programmable logic controller), and controlling the driving to acquire flow values of a fifth flowmeter and a sixth flowmeter by the PLC;
and 2.1.4, electrifying the fourth reversing valve, communicating the P end and the B end of the fourth reversing valve, communicating the A end and the T end of the fourth reversing valve, and feeding oil into the proportional valve body from the second oil inlet end C3 and the third oil inlet end C5 respectively to ensure that the first valve core transversely displaces and the second valve core longitudinally displaces to achieve the purpose of changing the size of a valve channel in the proportional valve body, thereby achieving the purpose of matching the pipe diameter of the oil pump of the gearbox.
The comprehensive performance test in the step 2.2 specifically comprises the following steps:
A1. and (3) voltage limiting performance testing: the PLC controls the drive to control the rotating speed of the main drive motor, and controls the variable of the regulating valve until the safety valve in the gearbox oil pump is opened, and the PLC controls the drive to acquire the pressure value of the first pressure sensor and the standard pressure value to judge;
B1. and (3) testing the pressure performance: the PLC controls the change of the rotating speed of the driving control total driving motor, so that flow and pressure change curves of the first flowmeter, the third flowmeter and the fourth flowmeter are collected under different pressures and are respectively judged with a standard flow and pressure curve;
C1. and (3) testing the flow performance: the industrial computer sends an instruction to the PLC control driver, the PLC control driver controls the change of the rotating speed of the total driving motor according to the instruction, the flow changes of the first flowmeter, the third flowmeter and the fourth flowmeter under corresponding pressures are collected under different rotating speeds and when rated flow is achieved, data processing and analysis are carried out through the industrial computer, and the comparison and judgment are carried out on the flow changes and the standard flow curve;
D1. manual performance testing: manually debugging the rotating speed of the total driving motor to reach a preset pressure, collecting flow values of the first flowmeter, the third flowmeter and the fourth flowmeter, comparing the flow values with a standard flow value, and performing data processing and analysis by an industrial computer; if the comparison is not consistent, calibrating by a calibration mechanism;
E1. high-speed oil filling test: the main driving motor is started and continuously accelerated within preset time, the regulating valve is regulated to a preset fixed value, and then a curve of pressure and flow is collected through the first flowmeter and the first pressure sensor; the relation between pressure and flow is judged through a curve displayed by an industrial computer, and the maximum efficiency and the reduction efficiency are calculated to confirm the point of high-speed oil filling.
The step 2.3 specifically comprises:
A2. the industrial computer sends a command to the PLC control drive to control the temperature-adjusting oil way, and the oil is heated to TaTemperature sensor displays temperature Ta；
B2. Opening a driving valve on a transmission oil pump; pressure P given VFS valve setting1Reading the display from the second pressure sensor, and then adjusting the oil way to a strong-impulse oil way of the dynamic oil pressure test oil way; pressure P given TCC valve setting2Reading the display from the third pressure sensor, and adjusting the oil path to a weak-impulse oil path of the dynamic oil pressure test oil path; closing the cooling valve to enable the cooling valve to have zero flow; the total driving motor is started to rotate to a set rotating speed; the PLC controls and drives the outlet pressure of the gearbox oil pump to be adjusted, and the body test oil way and the valve test oil way run together for a time T;
C2. the industrial computer records test data which mainly comprises time, rotating speed, torque curves, oil temperature, outlet pressure values of a gearbox oil pump and outlet flow values of the gearbox oil pump; an outlet pressure value and an outlet flow value of the cooling valve; outlet pressure value of VFS valve and outlet flow value of VFS valve; TCC valve outlet pressure value, TCC valve outlet flow value; driving the valve to have an inlet pressure value;
PLC controls the drive control temperature-adjusting oil way to heat the oil to TbDisplayed by the temperature sensor;
E2. the industrial computer controls the PLC control drive, and the PLC control drive opens the drive valve; the total drive motor, the first drive motor and the second drive motor are gradually operated to enable the pressure value of the cooling valve to reach a preset value P3(ii) a The cooling valve is then adjusted to a predetermined flow value F1(ii) a Then the PLC controls and drives the valve test oil way to be switched to a static oil pressure test oil way;
F2. given pressure value P set for TCC valve4(ii) a Closing a valve body corresponding to an outlet of the gearbox oil pump 1 to zero;
and G2, the PLC controls the drive to control the rotation speed of the total drive motor to be unchanged, and the industrial computer issues an instruction to control the PLC to control the drive to control the continuous change of the regulating valve.
As shown in FIG. 4, the invention also provides a test system of the gearbox oil pump and the functional valve, which comprises the test assembly and the test method, the test assembly comprises the gearbox oil pump and the functional valve, the data acquisition module and the power supply module, wherein the industrial computer is electrically connected with a PLC drive control and a main drive motor, the PLC drive control is respectively electrically connected with the body test oil circuit and the valve test oil circuit, the gearbox oil pump is communicated on the body testing oil way, the functional valve group is communicated on the valve testing oil way, the main driving motor is communicated with a gearbox oil pump, the data acquisition module is respectively and electrically connected with the body test oil way and the valve test oil way, specifically, the data acquisition module is electrically connected with the first flowmeter, the second flowmeter, the first pressure sensor, the fifth flowmeter and the sixth flowmeter on the body test oil way; the data acquisition module is electrically connected with a third flowmeter, a fourth flowmeter, a second pressure sensor, a third pressure sensor and a fourth pressure sensor on the valve test oil way.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (10)

1. Gearbox oil pump and functional valve's test assembly, its characterized in that includes:
the gearbox oil pump (1) to be detected comprises an oil inlet and an oil outlet, a functional valve bank to be detected is arranged in the gearbox oil pump (1), and the functional valve bank comprises a first type of functional valve for detecting strong oil and weak oil needing to be dynamically switched and a second type of functional valve for detecting continuous oil supply;
the oil tank (2) is provided with a temperature adjusting oil way (3) capable of adjusting the temperature of the oil in the oil tank (2);
the main driving motor (4) is connected with the gearbox oil pump (1) to extract and pressurize oil;
the body test oil way (5) comprises an oil inlet pipe (5.1) and an oil outlet pipe (5.2), one end of the oil inlet pipe (5.1) is communicated with the oil inlet, one end of the oil outlet pipe (5.2) is communicated with the oil outlet, and the other end of the oil inlet pipe (5.1) and the other end of the oil outlet pipe (5.2) are communicated with the oil tank (2); the oil outlet pipe (5.2) is sequentially connected with a first pressure sensor (5.3), a first flowmeter (5.4) and at least one regulating valve (5.5) along the oil flowing direction, and the oil outlet pipe (5.2) is connected in parallel with a calibration mechanism (5.6) which can further regulate and match the pipe diameter of the gearbox oil pump (1) and corresponds to the regulating valve (5.5); a second flowmeter (5.7) is connected between the gearbox oil pump (1) and an oil outlet pipe (5.2) behind the first flowmeter (5.4);
the valve testing oil way (6) comprises a dynamic oil pressure testing oil way (6.1) and a static oil pressure testing oil way (6.2), wherein the output end of the dynamic oil pressure testing oil way (6.1) is connected with a first reversing valve (6.3), the output end of the first reversing valve (6.3) is connected with a first type valve interface (6.4), the first type valve interface (6.4) is communicated with a first type functional valve through a pipeline, and a third flowmeter (6.5) is connected to the pipeline between the first type valve interface (6.4) and the first type functional valve; the dynamic oil pressure test oil way (6.1) comprises a strong impulse oil way (6.6) and a weak impulse oil way (6.7), one end of the strong impulse oil way (6.6) is communicated with the P end of the first reversing valve (6.3), one end of the weak impulse oil way (6.7) is communicated with the T end of the first reversing valve (6.3), and the other end of the strong impulse oil way (6.6) and the other end of the weak impulse oil way (6.7) are communicated with the oil tank (2);
the input end of the static oil pressure test oil way (6.2) is communicated with the oil tank (2), the output end of the static oil pressure test oil way (6.2) is connected with a second reversing valve (6.8), the output port of the second reversing valve (6.8) is connected with a second type valve interface (6.9), the second type valve interface (6.9) is communicated with a second type function valve through a pipeline, and a fourth flowmeter (6.10) is connected on the second type valve interface (6.9) and the pipeline of the second type function valve;
the industrial computer is connected with a PLC (programmable logic controller) drive control, and the PLC drive control is respectively connected and controlled with the temperature adjusting oil way (3), the main drive motor (4), the body testing oil way (5), the calibration mechanism (5.6) and the valve testing oil way (6).
2. The gearbox oil pump and functional valve test assembly according to claim 1, characterized in that the calibration mechanism (5.6) comprises a calibration piece (5.6.1) and a calibration oil circuit (5.6.2), wherein:
the marking piece (5.6.1) comprises an outer shell (5.6.1.1) and an inner cavity piece (5.6.1.2) which is arranged in the outer shell (5.6.1.1) and can be extruded, a proportional valve body (5.6.1.3) is arranged in the inner cavity piece (5.6.1.2), oil is filled in the inner cavity piece (5.6.1.2), a valve channel (5.6.1.4) is arranged in the proportional valve body (5.6.1.3), a first valve core (5.6.1.5) which can transversely displace and a second valve core (5.6.1.6) which can longitudinally displace are arranged in the valve channel (5.6.1.4), a first displacement sensor (5.6.1.7) which can sense the displacement of the first valve core (5.6.1.5) and a second displacement sensor (5.6.1.8) which can sense the displacement of the second valve core (5.6.1.6) are arranged on the proportional valve body (5.6.1.3), and the first displacement sensor (5.6.1.7) and the second displacement sensor (5.6.1.8) are connected with PLC drive control;
the calibration oil circuit (5.6.2) comprises a first adjusting oil circuit (5.6.2.1) capable of filling oil into the outer shell (5.6.1.1) to extrude the inner cavity piece (5.6.1.2), and a second adjusting oil circuit (5.6.2.2) connected with the proportional valve body (5.6.1.3) to assist the displacement of the first valve core (5.6.1.5) and the second valve core (5.6.1.6) to adjust the area of the valve passage (5.6.1.4).
3. The testing assembly of the gearbox oil pump and the functional valve as claimed in claim 2, characterized in that a first oil inlet end (C1) and a first oil outlet end (C2) which are communicated with the inside of the outer housing (5.6.1.1) are formed on the outer housing (5.6.1.1), the first adjusting oil path (5.6.2.1) comprises a first oil inlet path (D1), a first oil outlet path (D2), a third reversing valve (D3) and a first throttle valve (D4), one ends of the first oil inlet path (D1) and the first oil outlet path (D2) are communicated with the oil tank (2), the other end of the first oil inlet path (D1) is communicated with the P end of the third reversing valve (D3), the other end of the first oil outlet path (D2) is communicated with the T end of the third reversing valve (D3), the first throttle valve (D4) is provided with an A valve path and a B valve path, the A end of the third reversing valve (D3) is communicated with the A valve 4 of the first throttle valve (D5.6.1.1), the B end of the third reversing valve (D3) is communicated with the B valve passage of the first throttle valve (D4), and the A valve passage and the B valve passage of the first throttle valve (D4) are respectively communicated with the first oil inlet end (C1) and the first oil outlet end (C2) of the outer shell (5.6.1.1);
the proportional valve body (5.6.1.3) is provided with a second oil inlet end (C3) and a second oil outlet end (C4) which are communicated with the valve channel (5.6.1.4) and correspond to the first valve core (5.6.1.5); the proportional valve body (5.6.1.3) is provided with a third oil inlet end (C5) and a third oil outlet end (C6) which are communicated with the valve passage (5.6.1.4) corresponding to the second valve core (5.6.1.6); the second adjusting oil path (5.6.2.2) comprises a second oil inlet path (D5), a second oil outlet path (D6) and a fourth reversing valve (D7), the second oil inlet path (D5) and the second oil outlet path (D6) are communicated with the oil tank (2), the second oil inlet path (D5) is communicated with the P end of the fourth reversing valve (D7), the second oil outlet path (D6) is communicated with the T end of the fourth reversing valve (D7), the A end of the fourth reversing valve (D7) is communicated with the second oil inlet end (C3) and the third oil inlet end (C5) through pipelines, the B end of the fourth reversing valve (D7) is communicated with the second oil outlet end (C4) and the third oil outlet end (C6) through pipelines, a fifth pressure sensor (D8) is connected to the A end pipeline of the fourth reversing valve (D7), and a sixth pressure sensor (D9) is connected to the fourth reversing valve (D7);
the oil-gas separator is characterized in that a fourth oil pump (D1.1) and an electric regulator (D1.2) are sequentially connected to the first oil inlet path (D1) along the oil flowing direction, a second throttle valve (D1.3) is further connected between the first oil inlet path (D1) and the first oil outlet path (D2), and a third driving motor (D1.4) is connected to the fourth oil pump (D1.1);
a fifth oil pump (D5.1), a fourth one-way valve (D5.2), a pressure relief oil way (D5.3) and a high-pressure protection oil way (D5.4) are sequentially connected to the second oil inlet way (D5) along the oil flowing direction, and a fourth driving motor (D5.5) is connected to the fifth oil pump (D5.1); the pressure relief oil path (D5.3) is communicated with the oil tank (2), the pressure relief oil path (D5.3) is connected with a pressure relief valve (D5.3.1) and a pressure sensor (D5.3.2), and the pressure relief oil path (D5.3) is also connected with an overflow valve (D5.3.3) which is connected with the pressure relief valve (D5.3.1) in parallel; the high-pressure protection oil way (D5.4) is communicated with the oil tank (2), the high-pressure protection oil way (D5.4) is connected with a flow valve (D5.4.1) and a thermometer (D5.4.2), and the flow valve (D5.4.1) is also connected with a pressure valve (D5.4.3); and the P end and the T end of the second oil inlet path and the second oil outlet path, which correspond to the fourth reversing valve (D7), are also connected with a fifth flowmeter (D10) and a sixth flowmeter (D11).
4. The test assembly of the gearbox oil pump and the functional valve according to claim 1, characterized in that a first oil pump (6.11), a first one-way valve (6.12), a second pressure sensor (6.13) and a first energy accumulator (6.14) are sequentially connected to the high-impulse oil path (6.6) along the oil flow direction, and a first driving motor (6.15) is connected to the first oil pump (6.11);
the weak-impulse oil way (6.7) is sequentially connected with a second oil pump (6.16), a second one-way valve (6.17), a third pressure sensor (6.18) and a second energy accumulator (6.19) along the oil flowing direction;
the static oil pressure test oil way (6.2) is sequentially connected with a third oil pump (6.20), a third one-way valve (6.21), a fourth pressure sensor (6.22) and a third energy accumulator (6.23), and the third oil pump (6.20) is connected with a second driving motor (6.24).
5. The test assembly of the gearbox oil pump and the functional valve according to claim 1, characterized in that the valve test oil path (6) further comprises an anti-overflow protection oil path (6.25), one end of the protection oil path (6.25) is communicated with the oil tank (2), the protection oil path (6.25) is connected with a hydraulic motor (6.26), and the other end of the protection oil path (6.25) is simultaneously connected with an oil path branch I (S1), an oil path branch II (S2) and an oil path branch III (S3), wherein the oil path branch I (S1) is communicated with the high-impact oil path (6.6), the oil path branch I (S1) is also communicated with the T end of the second reversing valve (6.8), and the oil path I (S1) is connected with a first pressure regulating valve (S1.1); the oil way branch II (S2) is communicated with the weak-impulse oil way (6.7), and a second pressure regulating valve (S2.1) is connected to the oil way branch II (S2); the oil way branch III (S3) is communicated with the static oil pressure test oil way (6.2), and a third pressure regulating valve (S3.1) is connected to the oil way branch III (S3);
in addition, the oil tank (2) comprises a first oil tank (2.1) and a second oil tank (2.2), the first oil tank (2.1) and the second oil tank (2.2) are communicated through an oil pipe (2.3), and an oil well pump (2.4) is connected to the oil pipe (2.3); the first oil tank (2.1) supplies oil for the body testing oil circuit (5) and the calibration mechanism (5.6), and the second oil tank (2.2) supplies oil for the valve testing oil circuit (6) and the protection oil circuit (6.25); meanwhile, filters (7) are connected between a pipeline on the body test oil way (5) and the first oil tank (2.1), between a pipeline on the valve test oil way (6) and the second oil tank (2.2), between the protection oil way (6.25) and the second oil tank (2.2), and between the oil pipe (2.3) and the first oil tank (2.1) and the second oil tank (2.2);
wherein, the oil circuit (3) that adjusts the temperature advances oil pipe (3.1), adjusts the temperature and goes out oil pipe (3.2), mould temperature ware (3.3), temperature sensor (3.5) including adjusting the temperature, the input of advancing oil pipe (3.1) that adjusts the temperature, the output that goes out oil pipe (3.2) that adjusts the temperature all with oil tank (2) switch-on, temperature sensor (3.5) are established in the oil tank, and this temperature sensor (3.5) are connected with mould temperature ware (3.3) electricity, and the output that advances oil pipe (3.1) that adjusts the temperature, the input that goes out oil pipe (3.2) that adjusts the temperature respectively with mould temperature ware (3.3) input, output switch-on, just it has connect gradually filter (7), circulation auxiliary oil pump (3.4) to advance oil pipe (3.1) to adjust the temperature.
6. The transmission oil pump and functional valve test assembly according to claim 1, wherein the first type of functional valve comprises a TCC valve, a VFS valve, a drive valve, an implement pressure regulating valve, and a TOC pressure regulating valve provided on the transmission oil pump (1), and the second type of functional valve comprises a cooling valve, a linear line valve, a lubrication valve, and a safety valve.
7. A method for testing a transmission oil pump and a functional valve based on the test assembly of any one of claims 1-6, comprising the steps of:
step 1, a mold temperature controller works to heat the oil temperature in a first oil tank to a set temperature, and an oil pump works to pump oil in the first oil tank into a second oil tank;
step 2, the gearbox oil pump to be detected is connected into the body test oil way, the functional valve group to be detected in the gearbox oil pump is connected into the valve test oil way, the performance test is carried out on the gearbox oil pump and the functional valve group, and the industrial computer analyzes and processes the data collected by each pressure sensor, and the method specifically comprises the following steps:
step 2.1, controlling the operation calibration mechanism or the regulating valve to debug and match the pipe diameter matched with the gearbox oil pump;
2.2, carrying out comprehensive performance test on the gearbox oil pump and the functional valve group through the body test oil way and the valve test oil way;
and 2.3, carrying out performance test on the functional valve bank in the gearbox oil pump through the valve test oil way.
8. The testing method of the transmission oil pump and the functional valve according to claim 7, wherein the step 2.1 of adapting the pipe diameter of the transmission oil pump to be tested with respect to the calibration mechanism specifically comprises:
step 2.1.1, driving a fourth oil pump to operate by a third driving motor, and controlling an electric regulator to regulate the flow of the first oil inlet path by PLC driving control;
step 2.1.2, electrifying the third reversing valve, communicating the P end with the A end of the third reversing valve, and filling oil into the outer shell to extrude the inner cavity piece, so that a quantitative load is generated inside the inner cavity piece;
step 2.1.3, driving a fifth oil pump to operate by a fourth driving motor, adjusting the pressure and the flow of a second oil inlet path and a second oil outlet path by PLC drive control of a flow valve and a pressure valve, and acquiring flow values of a fifth flowmeter and a sixth flowmeter by PLC drive control;
step 2.1.4, electrifying the fourth reversing valve, communicating the P end and the B end of the fourth reversing valve, communicating the A end and the T end of the fourth reversing valve, and feeding oil into the second oil inlet end and the third oil inlet end of the proportional valve body to ensure that the first valve core transversely displaces and the second valve core longitudinally displaces to change the size of a valve channel in the proportional valve body, so that the purpose of matching the pipe diameter of the oil pump of the gearbox is achieved;
the comprehensive performance test in the step 2.2 specifically comprises the following steps:
A1. and (3) voltage limiting performance testing: the PLC drive control controls the rotation speed of the main drive motor, and the PLC drive control acquires the pressure value of the first pressure sensor and the standard pressure value to judge by controlling the variable of the regulating valve until the safety valve in the gearbox oil pump is opened;
B1. and (3) testing the pressure performance: the PLC controls the change rotation speed of the total driving motor in a driving mode, so that flow and pressure change curves of the first flowmeter, the third flowmeter and the fourth flowmeter are collected under different pressures and are judged according to standard flow and pressure curves respectively;
C1. and (3) testing the flow performance: the industrial computer sends an instruction to the PLC drive control, the PLC drive control controls the change of the rotating speed of the total drive motor according to the instruction, the changes of the first flowmeter, the third flowmeter and the fourth flowmeter under corresponding pressures are collected under different rotating speeds and when rated flow is achieved, data processing and analysis are carried out through the industrial computer, and the changes are compared with a standard flow curve for judgment;
D1. manual performance testing: manually debugging the rotating speed of the total driving motor to reach a preset pressure, collecting flow values of the first flowmeter, the third flowmeter and the fourth flowmeter, comparing the flow values with a standard flow value, and performing data processing and analysis by an industrial computer; if the comparison is not consistent, calibrating by a calibration mechanism;
E1. high-speed oil filling test: the main driving motor is started and continuously accelerated within preset time, the regulating valve is regulated to a preset fixed value, and then a curve of pressure and flow is collected through the first flowmeter and the first pressure sensor; judging the relation between pressure and flow through a curve displayed by an industrial computer, and calculating the maximum efficiency and the reduction efficiency to confirm the point of high-speed oil filling;
the step 2.3 specifically comprises:
A2. an industrial computer issues a command to a PLC drive control temperature-adjusting oil way to heat the oil to TaThe temperature sensor displays the temperature;
B2. opening a driving valve on a transmission oil pump; given VFS valveSet pressure P1Then, adjusting the oil way to a strong impulse oil way of a dynamic oil pressure test oil way; pressure P given TCC valve setting2Adjusting the oil way to a weak-impulse oil way of the dynamic oil pressure test oil way; closing the cooling valve to enable the cooling valve to have zero flow; the total driving motor is started to rotate to a set rotating speed; the PLC is used for controlling and adjusting the outlet pressure of the gearbox oil pump, and the body test oil way and the valve test oil way run together for a time T;
C2. the industrial computer records the test data;
PLC drive control command temperature-adjusting oil way for heating oil to Tb；
E2. The industrial computer controls the PLC to control the drive, and the PLC controls the opening of the drive valve; the total drive motor, the first drive motor and the second drive motor are gradually operated to enable the pressure value of the cooling valve to reach a preset value P3(ii) a The cooling valve is then adjusted to a predetermined flow value F1(ii) a Then the PLC drive control switches the valve test oil way to a static oil pressure test oil way;
F2. given pressure value P set for TCC valve4(ii) a Closing a valve body corresponding to an outlet of the gearbox oil pump to zero;
and G2, the rotating speed of the total driving motor is unchanged by the PLC driving control, and the industrial computer issues an instruction to control the PLC driving control to control the regulating valve to change continuously.
9. The test system of the gearbox oil pump and the functional valve is characterized by comprising the test assembly of the gearbox oil pump and the functional valve, which is described in any one of claims 1 to 6, and further comprising a data acquisition module and a power supply module, wherein the industrial computer is electrically connected with a PLC (programmable logic controller) drive control and a main drive motor, the PLC drive control is electrically connected with a body test oil way and a valve test oil way respectively, the gearbox oil pump is connected on the body test oil way, the functional valve group is connected on the valve test oil way, the main drive motor is connected with the gearbox oil pump, and the data acquisition module is electrically connected with the body test oil way and the valve test oil way respectively.
10. The test system for the gearbox oil pump and the functional valve according to claim 9, wherein the data acquisition module is electrically connected with the first flowmeter, the second flowmeter, the first pressure sensor, the fifth flowmeter and the sixth flowmeter on the body test oil path; the data acquisition module is electrically connected with a third flowmeter, a fourth flowmeter, a second pressure sensor, a third pressure sensor and a fourth pressure sensor on the valve test oil way.
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CN113982900B (en) * 2021-12-28 2022-05-20 宁波圣龙智能汽车系统有限公司 Variable displacement oil pump testing mechanism, testing method and testing system
CN114837930A (en) * 2022-04-29 2022-08-02 中国第一汽车股份有限公司 Control method and control device of oil pump test system and electronic device

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