Integrated hydraulic power source for hydraulic system test of heading machine

Abstract

The invention belongs to the technical field of hydraulic power sources, and particularly relates to an integrated hydraulic power source for a hydraulic system test of a heading machine. Comprising a loading oil source module, the loading oil source module comprises five sets of oil pumping assemblies connected in parallel, and three sets of oil pumping assemblies are used for pumping oil in an oil tank to a first working oil port, a second working oil port and a third working oil port respectively; the other two groups of oil pumping assemblies are used for pumping oil in the oil tank to the first plate cooler and the second plate cooler respectively; the tested system oil source module comprises a variable frequency motor, a rotating speed and torque sensor, a bearing box and a tested pump mounting mechanism which are sequentially arranged, and a tested system pump is mounted on the tested pump mounting mechanism; the control valve module is used for controlling the loading oil source module to supply oil to the tested system oil source module and the loading system; the tested system oil source module, the control valve module and the loading system enable oil to flow back to the oil tank through an oil return pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic power sources, in particular to an integrated hydraulic power source for testing a hydraulic system of a tunnel boring machine. Background Art

[0002] The main actuators of the tunnel boring machine are driven and controlled by the hydraulic system. The performance of the hydraulic system directly determines the performance of the whole machine, so it is very important to test the performance of its hydraulic system. The hydraulic system of the tunnel boring machine has the characteristics of large working pressure and flow (maximum working pressure 32MPa, maximum system flow 700L / min), complex actuator movements, frequent speed changes and reversing, and high system heat generation. Therefore, during the hydraulic system test, higher requirements are put forward for the power source, which must not only meet the power requirements of the tested tunnel boring machine hydraulic system, but also meet the power requirements of the loading hydraulic system. At the same time, in order to simulate the actual working conditions during the test, the oil supply pressure and flow rate must be quickly and dynamically controlled. In the existing technology, it is mainly aimed at the test of hydraulic components. The power source can only provide oil supply for a single hydraulic circuit, and it is impossible to provide multiple channels of different flow and pressure and adjustable and controllable power oil to the tested system and multiple loading circuits at the same time. If multiple hydraulic stations are used to provide power, there are problems such as large space occupation, complex pipelines, difficulty in coordinated control, and inability to centrally cool. Summary of the invention

[0003] In order to solve the problem that the hydraulic system test of a tunnel boring machine requires a power source to provide multiple channels of power oil with different flow rates and pressures and which is adjustable and controllable, currently power can only be provided by a combination of multiple hydraulic stations, which has the problems of large occupied space, complex pipelines, great difficulty in coordinated control, and inability to cool centrally, the present invention provides an integrated hydraulic power source for the hydraulic system test of a tunnel boring machine.

[0004] The present invention adopts the following technical solution: an integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine, comprising: A loading oil source module, the loading oil source module comprises five sets of parallel oil pumping assemblies, wherein three sets of oil pumping assemblies are used to pump the oil in the oil tank to the first working oil port, the second working oil port and the third working oil port respectively; the other two sets of oil pumping assemblies are used to pump the oil in the oil tank to the first plate cooler and the second plate cooler respectively; The oil source module of the tested system includes a variable frequency motor, a speed torque sensor, a bearing box and a tested pump mounting mechanism which are sequentially arranged, and the tested pump is mounted on the tested pump mounting mechanism; A control valve module, wherein the control valve module is used to control the loading oil source module to supply oil to the oil source module of the tested system and the loading system; The oil source module, control valve module and loading system of the tested system return the oil to the oil tank through the oil return pipeline.

[0005] In some embodiments, the five parallel oil pumping assemblies respectively include: a first motor, the first motor drives a first plunger pump, and the first plunger pump pumps oil in the oil tank into a first working oil port; a second motor, the second motor drives a second plunger pump, and the second plunger pump pumps the oil in the oil tank into the second working oil port; a third motor, wherein the third motor drives the first screw pump, and the first screw pump pumps the oil in the oil tank into the third working oil port; a fourth motor, wherein the fourth motor drives the second screw pump, and the second screw pump pumps the oil in the oil tank into the first plate cooler; A fifth motor drives a third screw pump, and the third screw pump pumps the oil in the oil tank into the second plate cooler.

[0006] In some embodiments, the oil suction port of the first plunger pump is connected to the oil tank through a pipeline, the oil outlet of the first plunger pump is connected to the oil inlet of the first high-pressure filter, the oil outlet of the first high-pressure filter is connected to the oil inlet of the first relief valve and the first working oil port of the loading oil source module, and the oil outlet of the first relief valve is connected to the oil tank; The second motor drives the second plunger pump, the oil suction port of the second plunger pump is connected to the oil tank through a pipeline, the oil outlet of the second plunger pump is connected to the oil inlet pipeline of the second high-pressure filter, the oil outlet of the second high-pressure filter is connected to the oil inlet of the second relief valve and the second working oil port of the loading oil source module, and the oil outlet of the second relief valve is connected to the oil tank; The third motor drives the first screw pump, the oil suction port of the first screw pump is connected to the oil tank through a pipeline, the oil outlet of the first screw pump is communicated with the oil inlet of the third high-pressure filter and the oil inlet of the third relief valve, the oil outlet of the third relief valve is connected to the oil tank, and the oil outlet of the third high-pressure filter is communicated with the third working oil port of the loading oil source module; The fourth motor drives the second screw pump, the oil suction port of the second screw pump is connected to the oil tank through a pipeline, the oil outlet of the second screw pump is connected to the oil inlet of the first plate cooler, the oil outlet of the first plate cooler is connected to the oil inlet of the first pipeline filter, and the oil outlet of the first pipeline filter is connected to the oil tank; The fifth motor drives the third screw pump, the oil suction port of the third screw pump is connected to the oil tank through a pipeline, the oil outlet of the third screw pump is connected to the oil inlet of the second plate cooler, the oil outlet of the second plate cooler is connected to the oil inlet of the second pipeline filter, and the oil outlet of the second pipeline filter is connected to the oil tank.

[0007] In some embodiments, the oil tank is connected to the first return oil filter and the second return oil filter respectively, the first return oil filter is connected to the oil outlet of the proportional relief valve; the second return oil filter is connected to the return oil port of the loading oil source module.

[0008] In some embodiments, the oil tank is in communication with the air filter oil port; In some embodiments, the oil tank is in communication with the oil port of the oil contamination monitor.

[0009] In some embodiments, the control valve module includes: A three-position four-way reversing valve, wherein the P port of the three-position four-way reversing valve is connected to the LS port of the test pump, the T port of the three-position four-way reversing valve is connected to the oil tank, the A port of the three-position four-way reversing valve is connected to the oil outlet of the test pump, and a throttle valve is arranged between the A port and the oil outlet of the test pump, and the B port of the three-position four-way reversing valve is connected to the LS control oil port of the control valve module; A fourth high-pressure filter, the oil inlet of the fourth high-pressure filter is connected to the oil outlet of the test pump, and a one-way valve is arranged between the two; A two-position two-way proportional flow valve, wherein the oil inlet of the two-position two-way proportional flow valve is connected to the oil outlet of the fourth high-pressure filter, a flow sensor is arranged between the two, and the oil outlet of the two-position two-way proportional flow valve is connected to the fourth working oil port of the control valve module; A proportional relief valve, the oil inlet of the proportional relief valve is communicated with the oil outlet of the fourth high-pressure filter, and the oil outlet of the proportional relief valve is communicated with the oil inlet of the first return oil filter.

[0010] In some embodiments, the loading system comprises: An oil cylinder loading circuit, the oil inlet of which is connected to the first working oil port of the loading oil source module; A control circuit, wherein an oil inlet of the control circuit is connected to the second working oil port; A motor loading circuit, wherein an oil inlet of the motor loading circuit is connected to the third working oil port; The hydraulic circuit of the tested tunnel boring machine, the oil inlet of the hydraulic circuit of the tested tunnel boring machine is connected with the fourth working oil port of the control valve module, and the LS control oil port of the control valve module is connected with the load feedback port of the hydraulic circuit of the tested tunnel boring machine; The oil return ports of all circuits of the loading system are connected to the oil tank.

[0011] According to the test requirements, adjust the setting values ​​of the first relief valve, the second relief valve, the third relief valve and the proportional relief valve, and set the maximum pressure value for the first working oil port, the second working oil port, the third working oil port and the fourth working oil port; switch the two-position two-way proportional flow valve to the right position, and open the valve port to the maximum; if the tested excavation hydraulic system needs to provide variable displacement power oil, switch the three-position four-way reversing valve to the left position; if the tested excavation hydraulic system needs to provide fixed displacement power oil, switch the three-position four-way reversing valve to the right position; Start the variable frequency motor, the first motor, the second motor, and the third motor to provide power oil for the operation and loading of the tested hydraulic system; The fourth motor and the fifth motor are started to circulate and cool the hot oil in the oil tank; When conducting a loading test on the hydraulic pump of a tunnel boring machine, connect the LS control oil port to the pilot control oil of the hydraulic system of the tunnel boring machine, switch the two-position two-way proportional flow valve to the right position, adjust the throttle opening of the proportional flow valve proportionally by an electrical signal to simulate the load, and detect parameter changes of the test pump through speed and torque sensors, flow sensors and pressure sensors to verify its performance.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention realizes the provision of multiple independent, adjustable and controllable hydraulic power oils for the hydraulic test system of the tunnel boring machine in one power source, and at the same time, an independent circulation cooling system is provided, which can perform oil cooling during the test intervals, and can also start the cooling pump in stages according to the heat generated by the system, so as to realize a reliable supply of power oil.

[0013] (2) The present invention can realize simulated load loading on the hydraulic pump of the tunnel boring machine through the control and adjustment of the two-position two-way proportional flow valve and the three-position four-way reversing valve, and monitor parameter changes through the speed torque sensor, flow sensor and pressure sensor to realize the performance test of the tested pump.

[0014] (4) The integrated design of the present invention realizes the on-demand supply of multiple power oil channels and the simulated loading test of the test pump in one device. It has multiple functions, occupies a small space, has a modular pipeline interface, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the layout of a hydraulic power source used for testing the hydraulic system of a tunnel boring machine; Figure 2 It is a structural diagram of the oil source loading module; Figure 3 for Figure 2 Left view of; Figure 4 It is the structural diagram of the oil source module of the tested system; Figure 5 It is a structural schematic diagram of the control valve module; Figure 6 It is a schematic diagram of the hydraulic principle of the hydraulic power source; In the figure, 1-loading oil source module; 101-first base; 102-oil tank; 103-first motor; 104-first plunger pump; 105-first high-pressure filter; 106-first overflow valve; 107-second motor; 108-second plunger pump; 109-second high-pressure filter; 110-second overflow valve; 111-third motor; 112-first screw pump; 113-third overflow valve; 114-third high-pressure filter; 115-fourth motor; 116-second screw pump; 117-first plate cooler; 118-first pipeline filter; 119-fifth motor; 120-third screw pump; 121-second plate cooler; 122-second pipeline filter ;123-first return oil filter;124-second return oil filter;125-air filter;126-oil contamination monitor;127-first working oil port;128-second working oil port;129-third working oil port;130-return oil port;2-test system oil source module;21-second base;22-frequency conversion motor;23-torque meter mounting bracket;24-bearing box;25-test pump mounting mechanism;26-speed torque sensor;3-control valve module;31-third base;32-three-position four-way reversing valve;33-fourth high-pressure filter;34-two-position two-way proportional flow valve;35-proportional overflow valve;36-fourth working oil port;37-LS control oil port. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] An integrated hydraulic power source for testing a hydraulic system of a roadheader, comprising: The oil source module 1 is loaded, and the oil source module 1 includes five sets of parallel oil pumping assemblies, wherein three sets of oil pumping assemblies are used to pump the oil in the oil tank 102 to the first working oil port 127, the second working oil port 128 and the third working oil port 129 respectively; the other two sets of oil pumping assemblies are used to pump the oil in the oil tank 102 to the first plate cooler 117 and the second plate cooler 121 respectively; The oil source module 2 of the tested system includes a variable frequency motor 22, a speed torque sensor 26, a bearing box 24 and a tested pump mounting mechanism 25 which are sequentially arranged, and the tested pump is mounted on the tested pump mounting mechanism 25; the variable frequency motor 22 is mounted on the second base 21, and the output shaft of the variable frequency motor 22 is connected to the speed torque sensor 26 through a coupling, and the speed torque sensor 26 is mounted on the torque meter mounting bracket 23, and the speed torque sensor 26 is connected to one end of the bearing box 24 through a coupling, and the tested pump is mounted on the tested pump mounting mechanism 25, and the input shaft of the tested pump is connected to the other end of the bearing box 24, and the power is transmitted from the variable frequency motor 22 to the tested pump through the coupling, the speed torque sensor 26, and the bearing box 24 in sequence; A control valve module 3, wherein the control valve module 3 is used to control the loading oil source module 1 to supply oil to the test system oil source module 2 and the loading system; The oil source module 2, the control valve module 3 and the loading system of the tested system return the oil to the oil tank 102 through the oil return pipeline.

[0018] The loading oil source module 1, the tested system oil source module 2 located on one side of the loading oil source module 1, and the control valve module 3 located between the loading oil source module 1 and the tested system oil source module 2. The three modules are connected by pipelines to complete the circulation of oil. (See Figure 1 , Figure 6 ) The loading oil source module 1 includes a first base 101, an oil tank 102 located above the base, a first motor 103, a first plunger pump 104, a first high-pressure filter 105, a first overflow valve 106, a second motor 107, a second plunger pump 108, a second high-pressure filter 109, a second overflow valve 110, a third motor 111, a first screw pump 112, a third overflow valve 113, a third high-pressure filter 114, a fourth motor 115, a second screw pump 116, a first plate cooler 117, a first pipeline filter 118, a fifth motor 119, a third screw pump 120, a second plate cooler 121, a second pipeline filter 122, a first return oil filter 123, a second return oil filter 124, an air filter 125, an oil contamination monitor 126, a first working oil port 127, a second working oil port 128, a third working oil port 129, and an oil return port 130.

[0019] The first motor 103 is fixedly connected to the first base 101, and the first motor 103 drives the first plunger pump 104. The oil suction port of the first plunger pump 104 is connected to the oil tank 102 through a pipeline, and the oil outlet of the first plunger pump 104 is connected to the oil inlet of the first high-pressure filter 105. The oil outlet of the first high-pressure filter 105 is connected to the oil inlet of the first overflow valve 106 and the first working oil port 127 of the loading oil source module 1, and the oil outlet of the first overflow valve 106 is connected to the oil tank 102.

[0020] The second motor 107 is fixedly connected to the first base 101, and the second motor 107 drives the second plunger pump 108. The oil suction port of the second plunger pump 108 is connected to the oil tank 102 through a pipeline, and the oil outlet of the second plunger pump 108 is connected to the oil inlet pipeline of the second high-pressure filter 109. The oil outlet of the second high-pressure filter 109 is connected to the oil inlet of the second overflow valve 110 and the second working oil port 128 of the loading oil source module 1, and the oil outlet of the second overflow valve 110 is connected to the oil tank 102.

[0021] The third motor 111 is fixedly connected to the first base 101, and the third motor 111 drives the first screw pump 112. The oil suction port of the first screw pump 112 is connected to the oil tank 102 through a pipeline, and the oil outlet of the first screw pump 112 is connected to the oil inlet of the third high-pressure filter 114 and the oil inlet of the third overflow valve 113. The oil outlet of the third overflow valve 113 is connected to the oil tank 102, and the oil outlet of the third high-pressure filter 114 is connected to the third working oil port 129 of the loading oil source module 1.

[0022] The fourth motor 115 is fixedly connected to the first base 101, and the fourth motor 115 drives the second screw pump 116. The oil suction port of the second screw pump 116 is connected to the oil tank 102 through a pipeline, and the oil outlet of the second screw pump 116 is connected to the oil inlet of the first plate cooler 117, and the oil outlet of the first plate cooler 117 is connected to the oil inlet of the first pipeline filter 118, and the oil outlet of the first pipeline filter 118 is connected to the oil tank 102.

[0023] The fifth motor 119 is fixedly connected to the first base 101, and the fifth motor 119 drives the third screw pump 120. The oil suction port of the third screw pump 120 is connected to the oil tank 102 through a pipeline, and the oil outlet of the third screw pump 120 is connected to the oil inlet of the second plate cooler 121, and the oil outlet of the second plate cooler 121 is connected to the oil inlet of the second pipeline filter 122, and the oil outlet of the second pipeline filter 122 is connected to the oil tank 102.

[0024] The first return oil filter 123 is fixed above the oil tank 102 , the oil inlet of the first return oil filter 123 is connected to the return oil port 130 of the loading oil source module 1 , and the oil outlet of the first return oil filter 123 is connected to the oil tank 102 .

[0025] The second oil return filter 124 is fixed above the oil tank 102 , the oil inlet of the second oil return filter 124 is connected to the oil outlet of the proportional relief valve 35 , and the oil outlet of the second oil return filter 124 is connected to the oil tank 102 .

[0026] The air filter 125 is fixed above the oil tank 102, and the oil port is connected to the oil tank 102; the oil contamination monitor 126 is fixed below the oil tank 102, and the oil port is connected to the oil tank 102. (See Figure 2 , Figure 3 ) The test system oil source module 2 includes a second base 21, above which are arranged in order from right to left a variable frequency motor 22, a torque meter mounting bracket 23, a bearing box 24 and a test pump mounting mechanism 25, and a speed torque sensor 26 located above the torque meter mounting bracket 23.

[0027] The variable frequency motor 22 is fixedly connected to the second base 21, the torque meter mounting bracket 23 is fixedly connected to the second base 21, the bearing box 24 is fixedly connected to the second base 21, the speed torque sensor 26 is fixedly connected to the torque meter mounting bracket 23, the tested system pump is fixedly connected to the tested pump mounting mechanism 25, and the output shaft of the variable frequency motor 22 is connected to the input shaft of the tested system pump through the coupling, the speed torque sensor 26, and the bearing box 24 in sequence. (See Figure 4 ) The control valve module 3 includes a third base 31 , a three-position four-way reversing valve 32 located above the third base 31 , a fourth high-pressure filter 33 , a two-position two-way proportional flow valve 34 , a proportional relief valve 35 , a fourth working oil port 36 , and an LS control oil port 37 .

[0028] The P port of the three-position four-way reversing valve 32 is connected to the LS port of the test pump, the T port is connected to the oil tank 102, the A port is connected to the pump oil outlet, and a throttle valve is arranged between the A port and the pump oil outlet, and the B port is connected to the LS control oil port 37 of the control valve module; the oil outlet of the test pump is used to output high-pressure power oil to the load, and a throttle valve is arranged between the A port of the three-position four-way reversing valve 32 and the oil outlet of the test pump to simulate the load.

[0029] The oil inlet of the fourth high-pressure filter 33 is connected to the oil outlet of the test pump, and a one-way valve is arranged between them. The oil outlet of the fourth high-pressure filter 33 is connected to the oil inlet of the proportional flow valve 34, and a flow sensor is arranged between them. The oil outlet of the proportional flow valve 34 is connected to the fourth working oil port 36 of the control valve module, the oil inlet of the proportional relief valve 35 is connected to the oil outlet of the fourth high-pressure filter 33, and the oil outlet of the proportional relief valve 35 is connected to the oil inlet of the second return oil filter 124 (see Figure 5 ).

[0030] The hydraulic power source of the hydraulic system test bench of the tunnel boring machine includes: main oil tank, tunnel boring machine oil supply circuit, motor loading oil supply circuit, cylinder loading oil supply circuit, pilot control oil supply circuit, circulating cooling circuit, and residual oil recovery circuit. The hydraulic power source is connected to the tunnel boring machine hydraulic system, test bench loading module, and pilot control module through pipelines to provide power oil for the entire test bench system, and at the same time completes the cooling, filtering, recovery, and monitoring of the hydraulic oil used in the test bench. The oil suction port of the tunnel boring machine oil supply circuit is connected to the main oil tank, and oil is sucked from the main oil tank. The oil outlet is connected to the oil inlet of the tunnel boring machine multi-way reversing valve in the valve loading module to provide pressure oil for the tunnel boring machine hydraulic system. The oil suction port of the motor loading oil supply circuit is connected to the main oil tank, and oil is sucked from the main oil tank. The oil outlet is connected to the oil inlet of the bridge rectifier circuit in the motor loading module to provide pressure oil for the loading motor. The oil suction port of the cylinder loading oil supply circuit is connected to the main oil tank, and oil is sucked from the main oil tank. The oil outlet is connected to the oil inlet of the loading cylinder in the cylinder loading module to provide pressurized oil for the loading cylinder. The oil suction port of the pilot control oil supply circuit is connected to the main oil tank, and oil is sucked from the main oil tank. The oil outlet is connected to the P port of the electromagnetic three-position four-way reversing valve in the pilot control module to provide pressurized oil for the pilot control module. The oil inlet of the circulating cooling circuit is connected to the low-level oil port of the main oil tank, and oil is sucked from the main oil tank. The oil outlet is connected to the high-level oil port of the main oil tank to achieve circulating cooling and filtration of the oil. The oil inlet of the residual oil recovery circuit is connected to the oil collecting tank, and the oil outlet is connected to the main oil tank. The leaked oil during the test is filtered by the oil pump and recycled into the main oil tank for reuse to avoid polluting the environment.

[0031] Workflow: When testing the hydraulic system of the tunnel boring machine, it serves as a hydraulic power source to supply oil to the tested hydraulic system and loading system. The multi-pump of the tested tunnel boring machine is installed in the oil source module of the tested system. The first working oil port of the loading oil source module is connected to the oil inlet of the cylinder loading circuit, the second working oil port is connected to the oil inlet of the control circuit, the third working oil port is connected to the oil inlet of the motor loading circuit, and the return oil port is connected to the return oil ports of all circuits of the test system; the fourth working oil port of the control valve module is connected to the oil inlet of the hydraulic circuit of the tested tunnel boring machine, and the LS control oil port of the control valve module is connected to the load feedback port of the hydraulic circuit of the test tunnel boring machine. According to the needs of the test system, adjust the setting values ​​of the first relief valve, the second relief valve, the third relief valve and the proportional relief valve, and set the maximum pressure value for the first working oil port, the second working oil port, the third working oil port and the fourth working oil port; switch the proportional flow valve to the right position and open the valve port to the maximum; if the tested excavation hydraulic system needs to provide variable displacement power oil, switch the three-position four-way reversing valve to the left position; if the tested excavation hydraulic system needs to provide fixed displacement power oil, switch the three-position four-way reversing valve to the right position. Start the variable frequency motor, the first motor, the second motor and the third motor to provide power oil for the operation and loading of the hydraulic system of the excavator. Start the fourth motor and the fifth motor to circulate and cool the hot oil in the oil tank.

[0032] When conducting a loading test on the hydraulic pump of a tunnel boring machine, connect the LS control oil port to the external pilot control oil, switch the two-position two-way proportional flow valve to the right position, adjust the throttle opening of the proportional flow valve proportionally through an electrical signal to simulate the load, and detect parameter changes of the test pump through a speed torque sensor, flow sensor, and pressure sensor to verify its performance.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine, characterized in that: include: A loading oil source module (1), the loading oil source module (1) comprising five sets of parallel-connected oil pumping assemblies, wherein three sets of the oil pumping assemblies are used to pump the oil in the oil tank (102) to the first working oil port (127), the second working oil port (128) and the third working oil port (129), respectively; and the other two sets of the oil pumping assemblies are used to pump the oil in the oil tank (102) to the first plate cooler (117) and the second plate cooler (121), respectively; A test system oil source module (2), the test system oil source module (2) comprising a variable frequency motor (22), a speed torque sensor (26), a bearing box (24) and a test pump mounting mechanism (25) arranged in sequence, and a test system pump is mounted on the test pump mounting mechanism (25); A control valve module (3), the control valve module (3) being used to control the loading oil source module (1) to supply oil to the test system oil source module (2) and the loading system; The oil source module (2), the control valve module (3) and the loading system of the tested system return oil to the oil tank (102) through the oil return pipeline.

2. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 1, characterized in that: The five parallel oil pump components include: A first motor (103), the first motor (103) driving a first plunger pump (104), the first plunger pump (104) pumping oil in the oil tank (102) into a first working oil port (127); a second motor (107), the second motor (107) driving a second plunger pump (108), the second plunger pump (108) pumping oil in the oil tank (102) into a second working oil port (128); a third motor (111), the third motor (111) driving the first screw pump (112), the first screw pump (112) pumping oil in the oil tank (102) into the third working oil port (129); a fourth motor (115), the fourth motor (115) driving a second screw pump (116), the second screw pump (116) pumping oil in the oil tank (102) into a first plate cooler (117); A fifth motor (119), wherein the fifth motor (119) drives a third screw pump (120), and the third screw pump (120) pumps oil in the oil tank (102) into a second plate cooler (121).

3. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 2, characterized in that: The oil suction port of the first plunger pump (104) is connected to the oil tank (102) via a pipeline, the oil outlet of the first plunger pump (104) is connected to the oil inlet of the first high-pressure filter (105), the oil outlet of the first high-pressure filter (105) is connected to the oil inlet of the first overflow valve (106) and the first working oil port (127) of the loading oil source module (1), and the oil outlet of the first overflow valve (106) is connected to the oil tank (102); The second motor (107) drives the second plunger pump (108); the oil suction port of the second plunger pump (108) is connected to the oil tank (102) via a pipeline; the oil outlet of the second plunger pump (108) is connected to the oil inlet pipeline of the second high-pressure filter (109); the oil outlet of the second high-pressure filter (109) is connected to the oil inlet of the second overflow valve (110) and the second working oil port (128) of the loading oil source module (1); and the oil outlet of the second overflow valve (110) is connected to the oil tank (102); The third motor (111) drives the first screw pump (112); the oil suction port of the first screw pump (112) is connected to the oil tank (102) via a pipeline; the oil outlet of the first screw pump (112) is communicated with the oil inlet of the third high-pressure filter (114) and the oil inlet of the third overflow valve (113); the oil outlet of the third overflow valve (113) is connected to the oil tank (102); and the oil outlet of the third high-pressure filter (114) is communicated with the third working oil port (129) of the loading oil source module (1); The fourth motor (115) drives the second screw pump (116); the oil suction port of the second screw pump (116) is connected to the oil tank (102) via a pipeline; the oil outlet of the second screw pump (116) is connected to the oil inlet of the first plate cooler (117); the oil outlet of the first plate cooler (117) is connected to the oil inlet of the first pipeline filter (118); and the oil outlet of the first pipeline filter (118) is connected to the oil tank (102); The fifth motor (119) drives the third screw pump (120); the oil suction port of the third screw pump (120) is connected to the oil tank (102) via a pipeline; the oil outlet of the third screw pump (120) is in communication with the oil inlet of the second plate cooler (121); the oil outlet of the second plate cooler (121) is in communication with the oil inlet of the second pipeline filter (122); and the oil outlet of the second pipeline filter (122) is in communication with the oil tank (102).

4. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 3, characterized in that: The oil tank (102) is connected to a first return oil filter (123) and a second return oil filter (124) respectively; the first return oil filter (123) is connected to an oil outlet of a proportional relief valve (35); and the second return oil filter (124) is connected to an oil return port (130) of a loading oil source module (1).

5. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 1, characterized in that: The oil tank (102) is in communication with an oil port of an air filter (125).

6. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 1, characterized in that: The oil tank (102) is in communication with an oil port of an oil contamination monitor (126).

7. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 4, characterized in that: The control valve module (3) comprises: A three-position four-way reversing valve (32), wherein the P port of the three-position four-way reversing valve (32) is connected to the LS port of the test pump, the T port of the three-position four-way reversing valve (32) is connected to the oil tank (102), the A port of the three-position four-way reversing valve (32) is connected to the oil outlet of the test pump, a throttle valve is provided between the A port and the oil outlet of the test pump, and the B port of the three-position four-way reversing valve (32) is connected to the LS control oil port (37) of the control valve module (3); a fourth high-pressure filter (33), wherein an oil inlet of the fourth high-pressure filter (33) is connected to an oil outlet of the test pump, and a one-way valve is provided between the two; A two-position two-way proportional flow valve (34), wherein the oil inlet of the two-position two-way proportional flow valve (34) is connected to the oil outlet of the fourth high-pressure filter (33), a flow sensor is arranged between the two, and the oil outlet of the two-position two-way proportional flow valve (34) is connected to the fourth working oil port (36) of the control valve module (3); A proportional relief valve (35), wherein an oil inlet of the proportional relief valve (35) is communicated with an oil outlet of the fourth high-pressure filter (33), and an oil outlet of the proportional relief valve (35) is communicated with an oil inlet of the first return oil filter (123).

8. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 7, characterized in that: The loading system comprises: An oil cylinder loading circuit, wherein an oil inlet of the oil cylinder loading circuit is connected to a first working oil port (127) of a loading oil source module (1); A control circuit, wherein an oil inlet of the control circuit is connected to the second working oil port (128); A motor loading circuit, wherein an oil inlet of the motor loading circuit is connected to a third working oil port (129); A hydraulic circuit of the tested tunnel boring machine, wherein the oil inlet of the hydraulic circuit of the tested tunnel boring machine is connected to the fourth working oil port (26) of the control valve module (3), and the LS control oil port (37) of the control valve module (3) is connected to the load feedback port of the hydraulic circuit of the tested tunnel boring machine; The oil return ports of all the circuits of the loading system are connected to the oil tank (102).

9. The integrated hydraulic power source for testing the hydraulic system of a tunnel boring machine according to claim 8, characterized in that: According to the test requirements, the setting values ​​of the first relief valve (106), the second relief valve (110), the third relief valve (113) and the proportional relief valve (35) are adjusted to set the maximum pressure values ​​for the first working oil port (127), the second working oil port (128), the third working oil port (129) and the fourth working oil port (36); the two-position two-way proportional flow valve (34) is switched to the right position, and the valve port is opened to the maximum; if the tested excavation hydraulic system needs to provide variable displacement power oil, the three-position four-way reversing valve (32) is switched to the left position; if the tested excavation hydraulic system needs to provide fixed displacement power oil, the three-position four-way reversing valve (32) is switched to the right position; Starting the variable frequency motor (22), the first motor (103), the second motor (107), and the third motor (111) to provide power oil for the operation and loading of the hydraulic system under test; Starting the fourth motor (115) and the fifth motor (119) to circulate and cool the hot oil in the oil tank (102); When conducting a loading test on a hydraulic pump of a tunnel boring machine, the LS control oil port (37) is connected to the pilot control oil of the hydraulic system of the tunnel boring machine, the two-position two-way proportional flow valve (34) is switched to the right position, and the throttle opening of the proportional flow valve is adjusted proportionally by an electrical signal to simulate the load. The speed torque sensor, flow sensor and pressure sensor are used to detect parameter changes of the tested pump to verify its performance.

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