Electronic double-pump reliability impact test device

Abstract

An electronic dual-pump reliability shock test device includes: an integrated board, a digital pressure gauge, an oil inlet positioning plate, a switching valve, a high-pressure oil inlet pipe, a low-pressure oil inlet pipe, two filters, an oil tank, a microcomputer, a motor power supply, a throttle valve, a cartridge valve, a relief valve, a pressure transmitter, a hydraulic accumulator, a one-way valve, a relay, a PLC controller, a DC power supply, and a circuit breaker. This device is used to verify that the electronic pump can withstand high pressure and undergo alternating cycle testing. It can adjust the output pressure of the high and low pressure pumps, achieving a high-pressure pump pressure of 45-100 bar and a low-pressure pump pressure of 1-5 bar. It can achieve high-low pressure reciprocating cyclic shock testing. The time for the pressure to rise from low to high pressure is less than 0.7 seconds, and the entire cycle is less than 3 seconds. This device is simple and efficient to operate, improving work efficiency; and solves a specific reliability shock test problem.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to an electronic dual-pump reliability impact testing device. Background Technology

[0002] The electronic pump is a core component of an automatic transmission, primarily responsible for providing the required oil volume and precisely controlling the hydraulic pressure to ensure smooth gear shifting. The transmission electronic pump is typically installed in the oil tank or oil pan and is controlled by a solenoid valve to start and stop. It includes components such as a brushless DC motor, a vane pump, and end caps.

[0003] In the automotive parts manufacturing industry, the electric pump, as a core functional component of automatic transmissions, has a complex structure and involves many intricate issues, including flow field research, matching research with engines and torque converters, testing technology research, and production process research. Testing of automotive parts is one of the most important product indicators, and the reliability testing and verification technology of the electric pump has a significant impact on the overall transmission performance. It is an indispensable part of electric pump development. Reliability testing is time-consuming, with durability testing for a single part typically lasting 500-1500 hours. Furthermore, some reliability tests require customized testing conditions based on the specific characteristics of the product. Utility Model Content

[0004] The purpose of this utility model is to provide an electronic dual-pump reliability impact test device, including: an integrated board, a digital pressure gauge, an oil inlet positioning plate, a switch valve, a high-pressure oil inlet pipe, a low-pressure oil inlet pipe, two filters, an oil tank, a microcomputer, a motor power supply, a throttle valve, a cartridge valve, a relief valve, a pressure transmitter, a hydraulic accumulator, a one-way valve, a relay, a PLC controller, a DC power supply, and a circuit breaker.

[0005] The integrated board has a T-shaped structure.

[0006] The integrated board has a cartridge valve connection hole and an overflow valve connection hole on one side of the horizontal plate, and several screw holes on the other side of the vertical plate.

[0007] The horizontal plate on the front of the integrated plate is provided with a one-way valve connection hole, a hydraulic accumulator connection hole, a pressure transmitter connection hole, and a throttle valve connection hole, while the vertical plate is provided with a high-pressure oil inlet, a low-pressure oil inlet, several screw holes II, and test holes.

[0008] The vertical plate on the back of the integrated board is provided with a switch valve connection hole.

[0009] The test hole inside the integrated board is connected to the low-pressure oil inlet.

[0010] The internal switching valve connection hole of the integrated board is connected to the low-pressure oil inlet.

[0011] The high-pressure oil inlet inside the integrated board is connected to the overflow valve connection hole.

[0012] The high-pressure oil inlet inside the integrated board is connected to the cartridge valve connection hole.

[0013] The high-pressure oil inlet inside the integrated board is connected to the connection hole of the one-way valve.

[0014] The one-way valve connection hole inside the integrated board is connected to the throttle valve connection hole.

[0015] The one-way valve connection hole inside the integrated board is connected to the pressure transmitter connection hole.

[0016] The one-way valve connection hole inside the integrated plate is connected to the hydraulic accumulator connection hole.

[0017] The high-pressure oil inlet of the integrated plate is connected to the high-pressure oil outlet of the electronic dual pump, and the low-pressure oil inlet of the integrated plate is connected to the low-pressure oil outlet of the electronic dual pump. The integrated plate is fixedly installed with the screw hole I of the electronic dual pump through screw hole II.

[0018] The low-pressure pump inlet of the electronic dual pump is connected to one end of the low-pressure inlet pipe, and the other end of the low-pressure inlet pipe is connected to a filter.

[0019] The low-pressure pump inlet is connected to the low-pressure outlet.

[0020] The high-pressure pump inlet of the electronic dual pump is connected to one end of the high-pressure oil inlet pipe, and the other end of the high-pressure oil inlet pipe is connected to another filter.

[0021] The high-pressure pump inlet is connected to the high-pressure outlet.

[0022] Both filters extend into the fuel tank.

[0023] The oil inlet positioning plate is fixedly installed on the screw holes of the integrated plate by screws.

[0024] The high-pressure oil inlet pipe and the low-pressure oil inlet pipe are fixed on the oil inlet positioning plate.

[0025] The digital pressure gauge is installed at the test hole of the integrated plate.

[0026] The switching valve is installed at the switching valve connection hole of the integrated plate.

[0027] The motor power supply is connected to the connector of the electronic dual pump.

[0028] The microcomputer is connected to the electronic dual pumps and controls the rotation of the electronic dual pumps to draw oil from the oil tank.

[0029] The throttle valve is installed in the throttle valve connection hole of the integrated plate.

[0030] The cartridge valve is installed in the cartridge valve connection hole of the integrated plate.

[0031] The overflow valve is installed in the overflow valve connection hole of the integrated plate.

[0032] The pressure transmitter is installed in the pressure transmitter connection hole of the integrated plate.

[0033] The hydraulic accumulator is installed in the hydraulic accumulator connection hole of the integrated plate.

[0034] The one-way valve is installed in the one-way valve connection hole of the integrated plate.

[0035] The circuit breaker is electrically connected to the DC power supply and controls the start and stop of the DC power supply.

[0036] The DC power supply is electrically connected to the PLC controller, pressure transmitter, and cartridge valve.

[0037] The pressure transmitter is electrically connected to the PLC controller and transmits the oil pressure information monitored at the hydraulic accumulator to the PLC controller.

[0038] The PLC controller generates control commands based on the monitored oil pressure information.

[0039] The relay is electrically connected to the PLC controller and controls the start and stop of the cartridge valve according to the control command.

[0040] Furthermore, the overflow valve is equipped with a protection pressure.

[0041] When the oil pressure entering the high-pressure inlet is greater than the protection pressure, the relief valve opens.

[0042] Furthermore, the electronic dual pump is a series dual pump, comprising a high-pressure pump, a low-pressure pump, and a motor.

[0043] The motor drives the high-pressure pump and the low-pressure pump to rotate, drawing oil from the oil tank.

[0044] The microcomputer generates speed control commands to control the motor speed.

[0045] Furthermore, the electronic dual pump includes a high-pressure pump and a low-pressure pump.

[0046] Both the high-pressure pump and the low-pressure pump are connected to an external motor, which drives the high-pressure pump and the low-pressure pump to rotate and draw oil from the oil tank.

[0047] The microcomputer generates speed control commands to control the speed of the external motor.

[0048] Furthermore, when adjusting the pressure in the low-pressure oil circuit, the test device uses a digital pressure gauge to monitor the oil pressure at the low-pressure inlet in real time, and controls the oil pressure at the low-pressure inlet through a switching valve.

[0049] Furthermore, when the pressure in the high-pressure oil circuit is adjusted, the test device uses a pressure transmitter to monitor the oil pressure at the high-pressure oil inlet in real time, and a PLC controller to control the opening and closing of the cartridge valve, thereby controlling the oil pressure at the high-pressure oil inlet.

[0050] Furthermore, the test device includes a charging stage I, a discharging stage, and a charging stage II during the high-pressure oil circuit pressure alternating cycle test.

[0051] Furthermore, during the charging stage I, if the oil pressure information monitored by the pressure transmitter at the hydraulic accumulator is less than a, the PLC controller generates a shutdown command to control the cartridge valve to close and charge the hydraulic accumulator, where a is a positive number.

[0052] Furthermore, during the energy release phase, if the oil pressure information monitored by the pressure transmitter at the hydraulic accumulator is greater than or equal to a, the PLC controller generates an opening command to control the cartridge valve to open, and the oil returns to the oil tank, where a is a positive number.

[0053] The pressure in the hydraulic accumulator is released by adjusting the opening of the throttle valve.

[0054] Furthermore, during the charging stage II, if the oil pressure information monitored by the pressure transmitter at the hydraulic accumulator is less than b, the PLC controller generates a shutdown command to control the cartridge valve to close and charge the hydraulic accumulator, where b is a positive number.

[0055] The technical effects of this invention are undeniable. The experimental device provided by this invention is used to verify that the electronic pump can withstand high pressure and undergo alternating cycle testing. This invention can adjust the output pressure of the high and low pressure pumps, achieving a high pressure of 45-100 bar and a low pressure of 1-5 bar. This invention can raise the pressure of the high pressure pump from low to high and then lower it back to low, realizing a high-pressure pump reciprocating cyclic impact. This invention can raise the pressure from low to high in less than 0.7 seconds, and the entire cycle is less than 3 seconds.

[0056] This utility model has the following effects:

[0057] 1. Simple and efficient operation, improving work efficiency;

[0058] 2. Solved specific reliability impact tests. Attached Figure Description

[0059] Figure 1 Schematic diagram of an electronic dual-pump reliability shock test device;

[0060] Figure 2Hydraulic schematic diagram of electronic dual-pump reliability impact test device;

[0061] Figure 3 The cyclic curve of the electronic dual-pump test;

[0062] Figure 4 This is a schematic diagram of an electronic dual-pump structure;

[0063] Figure 5 This is a schematic diagram of the integrated structure; Figure 5 (a) is a front view of the integrated structure; Figure 5 (b) is a back view of the integrated structure;

[0064] In the diagram: Electronic dual pump 1, low-pressure oil outlet 101, high-pressure oil outlet 102, low-pressure pump inlet 103, high-pressure pump inlet 104, screw hole I 105, integrated plate 2, high-pressure oil inlet 201, low-pressure oil inlet 202, screw hole II 203, test hole 204, switch valve connection hole 205, cartridge valve connection hole 206, relief valve connection hole 207, one-way valve connection hole 208, hydraulic accumulator connection hole 209, pressure transmitter. 210 Connector hole, 211 Throttle valve connecting hole, 212 Screw hole, 3 Digital pressure gauge, 4 Oil inlet positioning plate, 5 Switch valve, 6 High pressure oil inlet pipe, 7 Low pressure oil inlet pipe, 8 Filter, 9 Oil tank, 10 Microcomputer, 11 Motor power supply, 12 Throttle valve, 13 Cartridge valve, 14 Relief valve, 15 Pressure transmitter, 16 Hydraulic accumulator, 17 One-way valve, 18 Relay, 19 PLC controller, 20 DC power supply, 21 Circuit breaker. Detailed Implementation

[0065] The present invention will be further described below with reference to embodiments, but it should not be construed as the scope of the present invention being limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and conventional methods in the art without departing from the above-described technical concept of the present invention should be included within the protection scope of the present invention.

[0066] Example 1:

[0067] See Figures 1 to 5 An electronic dual-pump reliability impact test device includes: an integrated board 2, a digital pressure gauge 3, an oil inlet positioning plate 4, a switching valve 5, a high-pressure oil inlet pipe 6, a low-pressure oil inlet pipe 7, two filters 8, an oil tank 9, a microcomputer 10, a motor power supply 11, a throttle valve 12, a cartridge valve 13, a relief valve 14, a pressure transmitter 15, a hydraulic accumulator 16, a one-way valve 17, a relay 18, a PLC controller 19, a DC power supply 20, and a circuit breaker 21.

[0068] The integrated board 2 has a T-shaped structure.

[0069] The integrated plate 2 has a cartridge valve connection hole 206 and an overflow valve connection hole 207 on one side of the horizontal plate, and a number of screw holes 212 on the other side of the vertical plate.

[0070] The horizontal plate on the front of the integrated plate 2 is provided with a one-way valve connection hole 208, a hydraulic accumulator connection hole 209, a pressure transmitter connection hole 210, and a throttle valve connection hole 211. The vertical plate is provided with a high-pressure oil inlet 201, a low-pressure oil inlet 202, several screw holes II 203, and a test hole 204.

[0071] The vertical plate on the back of the integrated board 2 is provided with a switch valve connection hole 205.

[0072] The test hole 204 inside the integrated plate 2 is connected to the low-pressure oil inlet 202.

[0073] The internal switching valve connection hole 205 of the integrated plate 2 is connected to the low-pressure oil inlet 202.

[0074] The high-pressure oil inlet 201 inside the integrated plate 2 is connected to the overflow valve connection hole 207.

[0075] The high-pressure oil inlet 201 inside the integrated plate 2 is connected to the cartridge valve connection hole 206.

[0076] The high-pressure oil inlet 201 inside the integrated plate 2 is connected to the one-way valve connection hole 208.

[0077] The one-way valve connection hole 208 inside the integrated board 2 is connected to the throttle valve connection hole 211.

[0078] The one-way valve connection hole 208 inside the integrated plate 2 is connected to the pressure transmitter connection hole 210.

[0079] The one-way valve connection hole 208 inside the integrated plate 2 is connected to the hydraulic accumulator connection hole 209.

[0080] The high-pressure oil inlet 201 of the integrated plate 2 is connected to the high-pressure oil outlet 102 of the electronic dual pump 1, and the low-pressure oil inlet 202 of the integrated plate 2 is connected to the low-pressure oil outlet 101 of the electronic dual pump 1. The integrated plate 2 is fixedly installed to the electronic dual pump 1 through the screw hole II203 and the screw hole I105.

[0081] The low-pressure pump inlet 103 of the electronic dual pump 1 is connected to one end of the low-pressure inlet pipe 7, and the other end of the low-pressure inlet pipe 7 is connected to a filter 8.

[0082] The low-pressure pump inlet 103 is connected to the low-pressure outlet 101.

[0083] The high-pressure pump inlet 104 of the electronic dual pump 1 is connected to one end of the high-pressure oil inlet pipe 6, and the other end of the high-pressure oil inlet pipe 6 is connected to another filter 8.

[0084] The high-pressure pump inlet 104 is connected to the high-pressure outlet 102.

[0085] Both filters 8 extend into the oil tank 9.

[0086] The oil inlet positioning plate 4 is fixedly installed on the screw hole 212 of the integrated plate 2 by screws.

[0087] The high-pressure oil inlet pipe 6 and the low-pressure oil inlet pipe 7 are fixed on the oil inlet positioning plate 4.

[0088] The digital pressure gauge 3 is installed at the test hole 204 of the integrated plate 2.

[0089] The switching valve 5 is installed at the switching valve connection hole 205 of the integrated plate 2.

[0090] The motor power supply 11 is connected to the connector of the electronic dual pump 1.

[0091] The microcomputer 10 is connected to the electronic dual pump 1 and controls the rotation of the electronic dual pump 1 to draw oil from the oil tank 9.

[0092] The throttle valve 12 is installed in the throttle valve connection hole 211 of the integrated plate 2.

[0093] The cartridge valve 13 is installed in the cartridge valve connection hole 206 of the integrated plate 2.

[0094] The overflow valve 14 is installed in the overflow valve connection hole 207 of the integrated plate 2.

[0095] The pressure transmitter 15 is mounted on the pressure transmitter connection hole 210 of the integrated plate 2.

[0096] The hydraulic accumulator 16 is installed in the hydraulic accumulator connection hole 209 of the integrated plate 2.

[0097] The one-way valve 17 is installed in the one-way valve connection hole 208 of the integrated plate 2.

[0098] The circuit breaker 21 is electrically connected to the DC power supply 20 and controls the start and stop of the DC power supply 20.

[0099] The DC power supply 20 is electrically connected to the PLC controller 19, the pressure transmitter 15, and the cartridge valve 13.

[0100] The pressure transmitter 15 is electrically connected to the PLC controller 19 and transmits the oil pressure information monitored at the hydraulic accumulator 16 to the PLC controller 19.

[0101] The PLC controller 19 generates control commands based on the monitored oil pressure information.

[0102] The relay 18 is electrically connected to the PLC controller 19 and controls the start and stop of the cartridge valve 13 according to the control command.

[0103] Example 2:

[0104] An electronic dual-pump reliability impact test device, the main technical contents of which are described in Example 1, further wherein the overflow valve 14 is provided with a protection pressure.

[0105] When the oil pressure entering the high-pressure oil inlet 201 is greater than the protection pressure, the relief valve 14 opens.

[0106] Example 3:

[0107] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of Embodiments 1 to 2, further wherein the electronic dual pump 1 is a series dual pump, including a high-pressure pump, a low-pressure pump, and a motor.

[0108] The motor drives the high-pressure pump and the low-pressure pump to rotate, drawing oil from the oil tank 9.

[0109] The microcomputer 10 generates speed control commands to control the speed of the motor.

[0110] Example 4:

[0111] An electronic dual-pump reliability shock test device, the main technical contents of which are described in any one of Examples 1 to 3, and further, the electronic dual pump includes a high-pressure pump and a low-pressure pump.

[0112] Both the high-pressure pump and the low-pressure pump are connected to an external motor, which drives the high-pressure pump and the low-pressure pump to rotate and draw oil from the oil tank.

[0113] The microcomputer generates speed control commands to control the speed of the external motor.

[0114] Example 5:

[0115] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of Embodiments 1 to 4. Further, when the pressure of the low-pressure oil circuit is adjusted, the test device uses a digital display pressure gauge 3 to monitor the oil pressure of the low-pressure oil inlet 202 in real time, and controls the oil pressure of the low-pressure oil inlet 202 through the switching valve 5.

[0116] Example 6:

[0117] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 1 to 5. Further, when the pressure of the high-pressure oil circuit is adjusted, the test device uses a pressure transmitter 15 to monitor the oil pressure of the high-pressure oil inlet 201 in real time, and the PLC controller 19 controls the opening and closing of the cartridge valve 13, thereby controlling the oil pressure of the high-pressure oil inlet 201.

[0118] Example 7:

[0119] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of Examples 1 to 6, further wherein the test device includes a charging stage I, a discharging stage and a charging stage II during the high-pressure oil circuit pressure alternating reciprocating cycle test.

[0120] Example 8:

[0121] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 1 to 7, further wherein, during the charging stage I, the oil pressure information monitored by the pressure transmitter 15 at the hydraulic accumulator 16 is less than a, the PLC controller 19 generates a shutdown command to control the cartridge valve 13 to close, and to charge the hydraulic accumulator 16, wherein a is a positive number.

[0122] Example 9:

[0123] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 1 to 8, further wherein, during the energy release stage, the oil pressure information monitored by the pressure transmitter 15 at the hydraulic accumulator 16 is greater than or equal to a, the PLC controller 19 generates an opening command to control the cartridge valve 13 to open, and the oil returns to the oil tank 9, where a is a positive number.

[0124] The pressure in the hydraulic accumulator 16 is released by adjusting the opening of the throttle valve 12.

[0125] Example 10:

[0126] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 1 to 9, further wherein, during the charging stage II, the oil pressure information monitored by the pressure transmitter 15 at the hydraulic accumulator 16 is less than b, the PLC controller 19 generates a shutdown command to control the cartridge valve 13 to close, and to charge the hydraulic accumulator 16, wherein b is a positive number.

[0127] Example 11:

[0128] See Figures 1 to 5 An electronic dual-pump reliability impact test device includes: an integrated board 2, a digital pressure gauge 3, an oil inlet positioning plate 4, a switching valve 5, a high-pressure oil inlet pipe 6, a low-pressure oil inlet pipe 7, two filters 8, an oil tank 9, a microcomputer 10, a motor power supply 11, a throttle valve 12, a cartridge valve 13, a relief valve 14, a pressure transmitter 15, a hydraulic accumulator 16, a one-way valve 17, a relay 18, a PLC controller 19, a DC power supply 20, and a circuit breaker 21.

[0129] The integrated board 2 has a T-shaped structure.

[0130] The integrated plate 2 has a cartridge valve connection hole 206 and an overflow valve connection hole 207 on one side of the horizontal plate, and a number of screw holes 212 on the other side of the vertical plate.

[0131] The horizontal plate on the front of the integrated plate 2 is provided with a one-way valve connection hole 208, a hydraulic accumulator connection hole 209, a pressure transmitter connection hole 210, and a throttle valve connection hole 211. The vertical plate is provided with a high-pressure oil inlet 201, a low-pressure oil inlet 202, several screw holes II 203, and a test hole 204.

[0132] The vertical plate on the back of the integrated board 2 is provided with a switch valve connection hole 205.

[0133] The test hole 204 inside the integrated plate 2 is connected to the low-pressure oil inlet 202.

[0134] The internal switching valve connection hole 205 of the integrated plate 2 is connected to the low-pressure oil inlet 202.

[0135] The high-pressure oil inlet 201 inside the integrated plate 2 is connected to the overflow valve connection hole 207.

[0136] The high-pressure oil inlet 201 inside the integrated plate 2 is connected to the cartridge valve connection hole 206.

[0137] The high-pressure oil inlet 201 inside the integrated plate 2 is connected to the one-way valve connection hole 208.

[0138] The one-way valve connection hole 208 inside the integrated board 2 is connected to the throttle valve connection hole 211.

[0139] The one-way valve connection hole 208 inside the integrated plate 2 is connected to the pressure transmitter connection hole 210.

[0140] The one-way valve connection hole 208 inside the integrated plate 2 is connected to the hydraulic accumulator connection hole 209.

[0141] The high-pressure oil inlet 201 of the integrated plate 2 is connected to the high-pressure oil outlet 102 of the electronic dual pump 1, and the low-pressure oil inlet 202 of the integrated plate 2 is connected to the low-pressure oil outlet 101 of the electronic dual pump 1. The integrated plate 2 is fixedly installed to the electronic dual pump 1 through the screw hole II203 and the screw hole I105.

[0142] The low-pressure pump inlet 103 of the electronic dual pump 1 is connected to one end of the low-pressure inlet pipe 7, and the other end of the low-pressure inlet pipe 7 is connected to a filter 8.

[0143] The low-pressure pump inlet 103 is connected to the low-pressure outlet 101.

[0144] The high-pressure pump inlet 104 of the electronic dual pump 1 is connected to one end of the high-pressure oil inlet pipe 6, and the other end of the high-pressure oil inlet pipe 6 is connected to another filter 8.

[0145] The high-pressure pump inlet 104 is connected to the high-pressure outlet 102.

[0146] Both filters 8 extend into the oil tank 9.

[0147] The oil inlet positioning plate 4 is fixedly installed on the screw hole 212 of the integrated plate 2 by screws.

[0148] The high-pressure oil inlet pipe 6 and the low-pressure oil inlet pipe 7 are fixed on the oil inlet positioning plate 4.

[0149] The digital pressure gauge 3 is installed at the test hole 204 of the integrated plate 2.

[0150] The switching valve 5 is installed at the switching valve connection hole 205 of the integrated plate 2.

[0151] The motor power supply 11 is connected to the connector of the electronic dual pump 1.

[0152] The microcomputer 10 is connected to the electronic dual pump 1 and controls the rotation of the electronic dual pump 1 to draw oil from the oil tank 9.

[0153] The throttle valve 12 is installed in the throttle valve connection hole 211 of the integrated plate 2.

[0154] The cartridge valve 13 is installed in the cartridge valve connection hole 206 of the integrated plate 2.

[0155] The overflow valve 14 is installed in the overflow valve connection hole 207 of the integrated plate 2.

[0156] The pressure transmitter 15 is mounted on the pressure transmitter connection hole 210 of the integrated plate 2.

[0157] The hydraulic accumulator 16 is installed in the hydraulic accumulator connection hole 209 of the integrated plate 2.

[0158] The one-way valve 17 is installed in the one-way valve connection hole 208 of the integrated plate 2.

[0159] The circuit breaker 21 is electrically connected to the DC power supply 20 and controls the start and stop of the DC power supply 20.

[0160] The DC power supply 20 is electrically connected to the PLC controller 19, the pressure transmitter 15, and the cartridge valve 13.

[0161] The pressure transmitter 15 is electrically connected to the PLC controller 19 and transmits the oil pressure information monitored at the hydraulic accumulator 16 to the PLC controller 19.

[0162] The PLC controller 19 generates control commands based on the monitored oil pressure information.

[0163] The relay 18 is electrically connected to the PLC controller 19 and controls the start and stop of the cartridge valve 13 according to the control command.

[0164] Example 12:

[0165] An electronic dual-pump reliability shock test device, the main technical contents of which are described in Example 11, further wherein the overflow valve 14 is provided with a protection pressure of 70 bar.

[0166] When the oil pressure entering the high-pressure oil inlet 201 is greater than 70 bar, the overflow valve 14 opens.

[0167] Example 13:

[0168] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of Examples 11 to 12, further wherein the electronic dual pump 1 is a series dual pump, including a high-pressure pump, a low-pressure pump, and a motor.

[0169] The motor drives the high-pressure pump and the low-pressure pump to rotate, drawing oil from the oil tank 9.

[0170] The microcomputer 10 generates speed control commands to control the speed of the motor.

[0171] Example 14:

[0172] An electronic dual-pump reliability shock test device, the main technical contents of which are described in any one of Examples 11 to 13, further wherein the electronic dual pump includes a high-pressure pump and a low-pressure pump.

[0173] Both the high-pressure pump and the low-pressure pump are connected to an external motor, which drives the high-pressure pump and the low-pressure pump to rotate and draw oil from the oil tank.

[0174] The microcomputer generates speed control commands to control the speed of the external motor.

[0175] Example 15:

[0176] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of Examples 11 to 14. Further, when the pressure of the low-pressure oil circuit is adjusted, the test device uses a digital display pressure gauge 3 to monitor the oil pressure of the low-pressure oil inlet 202 in real time, and controls the oil pressure of the low-pressure oil inlet 202 through a switching valve 5.

[0177] Example 16:

[0178] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 11 to 15. Further, when the pressure is adjusted in the high-pressure oil circuit, the test device uses a pressure transmitter 15 to monitor the oil pressure of the high-pressure oil inlet 201 in real time, and a PLC controller 19 to control the opening and closing of the cartridge valve 13, thereby controlling the oil pressure of the high-pressure oil inlet 201.

[0179] Example 17:

[0180] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of Examples 11 to 16, further wherein the test device includes a charging stage I, a discharging stage and a charging stage II during the high-pressure oil circuit pressure alternating reciprocating cycle test.

[0181] Example 18:

[0182] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 11 to 17, further wherein, during the charging stage I, the oil pressure information monitored by the pressure transmitter 15 at the hydraulic accumulator 16 is less than 55 bar, the PLC controller 19 generates a shutdown command to control the cartridge valve 13 to close, so as to charge the hydraulic accumulator 16.

[0183] Example 19:

[0184] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 11 to 18, further wherein, during the energy release stage, the oil pressure information monitored by the pressure transmitter 15 at the hydraulic accumulator 16 is greater than or equal to 55 bar, the PLC controller 19 generates an opening command, controls the cartridge valve 13 to open, and the oil returns to the oil tank 9.

[0185] The pressure in the hydraulic accumulator 16 is released by adjusting the opening of the throttle valve 12.

[0186] Example 20:

[0187] An electronic dual-pump reliability impact test device, the main technical contents of which are described in any one of embodiments 11 to 19, further wherein, during the charging stage II, the oil pressure information monitored by the pressure transmitter 15 at the hydraulic accumulator 16 is less than 50 bar, the PLC controller 19 generates a shutdown command to control the cartridge valve 13 to close, so as to charge the hydraulic accumulator 16.

[0188] Example 21:

[0189] See Figures 1 to 5 An electronic dual-pump reliability shock test device, the main technical contents of which include:

[0190] The electronic dual pumps are tandem pumps, consisting of both a high-pressure pump and a low-pressure pump, and are equipped with motors, forming the main testing component. The motor drives the dual pumps; the motor power supply provides power to the motors; the microcomputer with control programs sends commands to the electronic pumps to control the motor speed; the hydraulic accumulator stores energy to replenish the oil circuit pressure; a pressure transmitter collects the high-pressure oil circuit pressure; a digital pressure gauge displays the low-pressure oil circuit pressure; a switching valve controls the low-pressure oil circuit pressure; a throttle valve adjusts the opening to control the accumulator's pressure release time; a cartridge valve switches the oil circuit; a one-way valve prevents backflow and pressure loss; a relief valve is set to 70 bar (or other pressure) for protection; and an oil tank (with temperature control) provides a constant temperature. Transmission fluid; an integrated plate for fixing the high-pressure integrated base plate and fixing the oil pump at an inclined angle (consistent with the oil pump posture in the vehicle); an integrated plate providing oil passages, connected to the accumulator, pressure transmitter, various valves, digital pressure gauge, and oil inlet connection plate, and the electronic dual pump is connected and fixed thereto; a high-pressure oil inlet pipe for the high-pressure pump to draw oil; a low-pressure oil inlet pipe for the low-pressure pump to draw oil; and a filter for filtering the oil to ensure its cleanliness.

[0191] The PLC controller enables automatic cyclic control; a 24V DC power supply provides power to the PLC controller, pressure transmitter, and cartridge valve; relays work in conjunction with the PLC controller to achieve automatic start / stop and protection control; and a circuit breaker is used for power control of the entire PLC device.

[0192] A motor drives two pumps to rotate. The high-pressure pump and the low-pressure pump draw oil from the tank respectively, and through operation, oil exits from the low-pressure port and the high-pressure port, reaching their respective oil circuits. The low-pressure oil circuit's low-pressure outlet pressure is controlled by a switching valve, and a digital pressure gauge displays the low-pressure oil circuit pressure in real time. The high-pressure oil circuit's oil circuit pressure is controlled by a PLC controller. When the pressure transmitter acquires a signal of the high-pressure oil circuit pressure, if the pressure is low, the signal is transmitted to the PLC controller. The PLC controls the cartridge valve to close, allowing fluid to flow to the accumulator end to charge the accumulator. When the pressure transmitter detects a low pressure in the high-pressure oil circuit, the signal is transmitted to the PLC controller. The PLC controls the cartridge valve to open, allowing fluid to flow to the no-load pipeline, and the pressure at the accumulator end slowly decreases. The pressure transmitter detects pressure changes, and the PLC controls the oil circuit's on / off state, realizing a pressure alternating reciprocating impact cycle. This allows for a reliability impact test of the electronic dual pumps.

[0193] Example 22:

[0194] See Figures 1 to 5 An electronic dual-pump reliability shock test device, the main technical contents of which include:

[0195] See Figure 2 and Figure 3 This is the hydraulic principle of the test apparatus. The durability and reliability of the electronic pumps are verified, primarily by testing the ability of the dual electronic pumps to withstand high-pressure alternating impacts. The high-pressure pump is subjected to cyclic pressure impacts of 50 to 55 bar, and the low-pressure pump is subjected to pressures of 1-5 bar. The cycle time is less than 3 seconds, and the number of cycles is 900,000.

[0196] See Figure 1 The electronic dual-pump reliability impact test device includes an electronic dual pump 1 (or the pump and motor are independent), an integrated board 2, a digital pressure gauge 3, an oil inlet positioning plate 4, a switching valve 5, a high-pressure oil inlet pipe 6, a low-pressure oil inlet pipe 7, a filter 8, an oil tank 9 with temperature control, a microcomputer 10, a motor power supply 11, a throttle valve 12, a cartridge valve 13, a relief valve 14, a pressure transmitter 15, a hydraulic accumulator 16, a one-way valve 17, a relay 18, a PLC controller 19, a 24V DC power supply 20, and a circuit breaker 21.

[0197] See Figures 3 to 5 The electronic dual pump 1 is mounted on the mounting surface of the integrated plate 2 and secured with three screws. The low-pressure pump inlet 103 of the electronic dual pump 1 is connected to the low-pressure inlet pipe 7, which is also connected to the filter 8. The high-pressure pump inlet 104 of the electronic dual pump 1 is connected to the low-pressure inlet pipe 6, which is also connected to the filter 8. The filter 8 ensures the cleanliness of the oil entering the pump body at both high and low pressures. The low-pressure outlet 101 of the electronic dual pump 1 is connected to the low-pressure inlet 202 of the integrated plate 2. The low-pressure outlet 202 is connected to the switching valve 5, and the opening of the switching valve 5 is manually controlled to ensure the pressure in the low-pressure oil circuit is 1-5 bar. The high-pressure outlet 102 of the electronic dual pump 1 is connected to the high-pressure inlet 201 of the integrated plate 2. The motor power supply 11 is connected to the connector of the electronic dual pump 1 to provide power to the motor. The microcomputer 10 controls the rotation of the electronic dual-pump shaft according to a given speed, enabling the high-pressure pump and low-pressure pump to draw oil from the oil tank. The oil inlet positioning plate 4 is fixed to the integrated plate 2 via screws and screw holes 212. The high-pressure oil inlet pipe 6 and the low-pressure oil inlet pipe 7 are fixed to the oil inlet positioning plate 4. The digital pressure gauge 3 is connected to the test hole 204 of the integrated plate 2 to monitor the pressure of the low-pressure oil circuit.

[0198] The connection hole 207 of the integrated plate 2 is connected to the overflow valve 14. The connection hole 206 of the base plate 2 is connected to the cartridge valve 13. The connection hole 210 of the integrated plate 2 is connected to the pressure transmitter 15. The connection hole 209 of the integrated plate 2 is connected to the hydraulic accumulator 16. The connection hole 208 of the integrated plate 2 is connected to the one-way valve 17.

[0199] The circuit breaker 21 controls the opening and closing of the 24V DC power supply 20, acting as the main switch. The 24V DC power supply 20 provides power to the PLC controller 19, pressure transmitter 15, and cartridge valve 13. The PLC controller 19 works in conjunction with the relay 18 to achieve automatic start and stop.

[0200] Oil from the high-pressure pump enters the internal oil circuit of the integrated board 2 through the oil inlet 201. The first oil passage connects to the relief valve 14, which is set with a protective pressure. When a certain pressure is exceeded, the relief valve 14 opens to release pressure. The second oil passage connects to the cartridge valve 13; the third oil passage connects to the one-way valve 17, which prevents backflow and avoids pressure loss. The three oil passages are further divided into three paths: one connects to the throttle valve 12, the second to the pressure transmitter 15, and the third to the hydraulic accumulator 16. When the pressure transmitter 15 detects that the oil level at the accumulator end has not reached 55 bar, it transmits the pressure information to the PLC controller 19. The PLC controller 19 then instructs the cartridge valve 13 to close, charging the hydraulic accumulator 16. When the oil pressure reaches 55 bar, the pressure transmitter 15 transmits the pressure information to the PLC controller 19, controlling the cartridge valve 13 to open, allowing the oil to return to the tank. The one-way valve 17 prevents backflow of oil at the hydraulic accumulator end, preventing immediate pressure loss. By adjusting the opening of the throttle valve 12, the hydraulic accumulator 16 gradually releases pressure; the opening size controls the switching time. As the oil pressure gradually decreases, when the pressure transmitter 15 detects that the oil pressure at the accumulator end is below 50 bar, the cartridge valve 13 closes, recharging the hydraulic accumulator 16. This reciprocating cycle achieves pressure surges. The pressure can be adjusted through the program on the PLC controller 19 to change the magnitude of the pressure surges.

Claims

1. An electronic double-pump reliability shock test device, characterized by, include: Integrated board (2), digital pressure gauge (3), oil inlet positioning plate (4), switch valve (5), high pressure oil inlet pipe (6), low pressure oil inlet pipe (7), two filters (8), oil tank (9), microcomputer (10), motor power supply (11), throttle valve (12), cartridge valve (13), relief valve (14), pressure transmitter (15), hydraulic accumulator (16), one-way valve (17), relay (18), PLC controller (19), DC power supply (20), switch circuit breaker (21); The integrated board (2) is a T-shaped board structure as a whole; The integrated plate (2) has a cartridge valve connection hole (206) and an overflow valve connection hole (207) on one side of the horizontal plate, and several screw holes (212) on the other side of the vertical plate. The integrated plate (2) has a single valve connection hole (208), a hydraulic accumulator connection hole (209), a pressure transmitter connection hole (210), and a throttle valve connection hole (211) on the horizontal plate on the front side, and a high pressure oil inlet (201), a low pressure oil inlet (202), several screw holes II (203), and a test hole (204) on the vertical plate. The integrated plate (2) has a switch valve connection hole (205) on the vertical plate on the back side; The test hole (204) inside the integrated plate (2) is connected to the low-pressure oil inlet (202); The internal switching valve connection hole (205) of the integrated plate (2) is connected to the low-pressure oil inlet (202); The high-pressure oil inlet (201) inside the integrated plate (2) is connected to the overflow valve connection hole (207); The high-pressure oil inlet (201) inside the integrated plate (2) is connected to the cartridge valve connection hole (206); The high-pressure oil inlet (201) inside the integrated plate (2) is connected to the one-way valve connection hole (208); The integrated plate (2) has a one-way valve connection hole (208) inside that is connected to a throttle valve connection hole (211); The integrated plate (2) has a one-way valve connection hole (208) inside that is connected to the pressure transmitter connection hole (210); The one-way valve connection hole (208) inside the integrated plate (2) is connected to the hydraulic accumulator connection hole (209); The high-pressure oil inlet (201) of the integrated plate (2) is connected to the high-pressure oil outlet (102) of the electronic dual pump (1), the low-pressure oil inlet (202) of the integrated plate (2) is connected to the low-pressure oil outlet (101) of the electronic dual pump (1), and the integrated plate (2) is fixedly installed with the screw hole I (105) of the electronic dual pump (1) through screw hole II (203); The low-pressure pump inlet (103) of the electronic dual pump (1) is connected to one end of the low-pressure inlet pipe (7), and the other end of the low-pressure inlet pipe (7) is connected to a filter (8). The low-pressure pump inlet (103) is connected to the low-pressure outlet (101); The high-pressure pump inlet (104) of the electronic dual pump (1) is connected to one end of the high-pressure inlet pipe (6), and the other end of the high-pressure inlet pipe (6) is connected to another filter (8); The high-pressure pump inlet (104) is connected to the high-pressure outlet (102); Both filters (8) extend into the oil tank (9); The oil inlet positioning plate (4) is fixedly installed on the screw hole (212) of the integrated plate (2) by screws; The high-pressure oil inlet pipe (6) and the low-pressure oil inlet pipe (7) are fixed on the oil inlet positioning plate (4); The digital pressure gauge (3) is installed at the test hole (204) of the integrated plate (2); The switching valve (5) is installed at the switching valve connection hole (205) of the integrated plate (2); The motor power supply (11) is connected to the plug interface of the electronic dual pump (1); The microcomputer (10) is connected to the electronic dual pump (1) and controls the rotation of the electronic dual pump (1) to draw oil from the oil tank (9); The throttle valve (12) is installed in the throttle valve connection hole (211) of the integrated plate (2). The cartridge valve (13) is installed in the cartridge valve connection hole (206) of the integrated plate (2); The overflow valve (14) is installed in the overflow valve connection hole (207) of the integrated plate (2). The pressure transmitter (15) is installed in the pressure transmitter connection hole (210) of the integrated plate (2); The hydraulic accumulator (16) is installed in the hydraulic accumulator connection hole (209) of the integrated plate (2). The one-way valve (17) is installed in the one-way valve connection hole (208) of the integrated plate (2); The circuit breaker (21) is electrically connected to the DC power supply (20) and controls the start and stop of the DC power supply (20); The DC power supply (20) is electrically connected to the PLC controller (19), the pressure transmitter (15), and the cartridge valve (13); The pressure transmitter (15) is electrically connected to the PLC controller (19) and transmits the oil pressure information monitored at the hydraulic accumulator (16) to the PLC controller (19). The PLC controller (19) generates control commands based on the monitored oil pressure information; The relay (18) is electrically connected to the PLC controller (19) and controls the start and stop of the cartridge valve (13) according to the control command.

2. The electronic dual-pump reliability impact testing device according to claim 1, characterized in that, The overflow valve (14) is equipped with a pressure protection function; When the oil pressure entering the high-pressure inlet (201) is greater than the protection pressure, the relief valve (14) opens.

3. The electronic dual-pump reliability impact testing device according to claim 1, characterized in that, The electronic dual pump (1) is a series dual pump, including a high-pressure pump, a low-pressure pump, and a motor; The motor drives the high-pressure pump and the low-pressure pump to rotate, drawing oil from the oil tank (9); The microcomputer (10) generates speed control commands to control the speed of the motor.

4. The electronic dual-pump reliability impact testing device according to claim 1, characterized in that, The electronic dual pump (1) includes a high-pressure pump and a low-pressure pump; Both the high-pressure pump and the low-pressure pump are connected to an external motor. The external motor drives the high-pressure pump and the low-pressure pump to rotate and draw oil from the oil tank (9). The microcomputer (10) generates speed control commands to control the speed of the external motor.

5. The electronic dual-pump reliability impact testing device according to claim 1, characterized in that, When the test device adjusts the pressure in the low-pressure oil circuit, it uses a digital pressure gauge (3) to monitor the oil pressure in the low-pressure oil inlet (202) in real time, and controls the oil pressure in the low-pressure oil inlet (202) through a switching valve (5).

6. The electronic dual-pump reliability impact testing device according to claim 1, characterized in that, When the pressure is adjusted in the high-pressure oil circuit, the test device uses a pressure transmitter (15) to monitor the oil pressure at the high-pressure oil inlet (201) in real time, and the PLC controller (19) controls the opening and closing of the cartridge valve (13) to control the oil pressure at the high-pressure oil inlet (201).

7. The electronic dual-pump reliability impact testing device according to claim 1, characterized in that, The test device, during the high-pressure oil circuit pressure alternating reciprocating cycle test, includes charging stage I, energy release stage, and charging stage II.

8. The electronic dual-pump reliability impact testing device according to claim 7, characterized in that, During the charging phase I, the oil pressure information monitored by the pressure transmitter (15) at the hydraulic accumulator (16) is less than a. The PLC controller (19) generates a shutdown command to control the cartridge valve (13) to close and charge the hydraulic accumulator (16), where a is a positive number.

9. The electronic dual-pump reliability impact testing device according to claim 7, characterized in that, During the energy release phase, the oil pressure information monitored by the pressure transmitter (15) at the hydraulic accumulator (16) is greater than or equal to a. The PLC controller (19) generates an opening command to control the cartridge valve (13) to open and the oil returns to the oil tank (9), where a is a positive number. The pressure of the hydraulic accumulator (16) is released by adjusting the opening of the throttle valve (12).

10. The electronic dual-pump reliability impact testing device according to claim 7, characterized in that, During the charging phase II, the oil pressure information monitored by the pressure transmitter (15) at the hydraulic accumulator (16) is less than b. The PLC controller (19) generates a shutdown command to control the cartridge valve (13) to close and charge the hydraulic accumulator (16), where b is a positive number.

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