Integrated hydraulic power source for testing of a hydraulic system of a roadheader

Abstract

The application belongs to the technical field of hydraulic power sources, and specifically relates to an integrated hydraulic power source for a hydraulic system test of a heading machine. The integrated hydraulic power source comprises a loading oil source module, a test system oil source module, and a control valve module. The loading oil source module comprises five groups of parallel pump oil assemblies, three of which 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, and the other two groups of pump oil assemblies are used for pumping oil in the oil tank to a first plate cooler and a second plate cooler, respectively. The test system oil source module comprises a frequency conversion motor, a rotating speed and torque sensor, a bearing box, and a test pump mounting mechanism arranged in sequence, and a test system pump is mounted on the test pump mounting mechanism. The control valve module is used for controlling oil supply of the loading oil source module to the test system oil source module and a loading system. The test system oil source module, the control valve module, and the loading system return oil to the oil tank through an oil return pipeline.

Description

TECHNICAL FIELD

[0001] The application 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. BACKGROUND

[0002] The main actuators of the heading machine are driven and controlled through the hydraulic system, and the performance of the hydraulic system directly determines the performance of the whole machine, so the performance test of the hydraulic system is very important. The hydraulic system of the heading machine has the characteristics of large working pressure and flow (the maximum working pressure is 32 MPa, and the maximum system flow is 700 L / min), complex actuator action, frequent speed change and reversal, and large system heat generation. Therefore, high requirements are put forward for the power source during the hydraulic system test. The power source not only needs to meet the power demand of the hydraulic system of the heading machine to be tested, but also needs to meet the power demand of the loading hydraulic system. In addition, in order to simulate the actual working condition during the test, the supply oil pressure and flow need to be quickly and dynamically controlled. In the prior art, the hydraulic component test is mainly carried out, and the power source can only provide single hydraulic circuit oil supply, and cannot provide multiple adjustable and controllable power oils with different flow rates and pressures for the tested system and multiple loading circuits at the same time. If multiple hydraulic stations are used to provide power, there are problems of large occupied space, complex pipeline, difficult cooperative control, and inability to centralized cooling. SUMMARY

[0003] In order to solve the problem that the power source needs to provide multiple adjustable and controllable power oils with different flow rates and pressures for the hydraulic system test of the heading machine, and the power can only be provided by multiple hydraulic stations at present, the application provides an integrated hydraulic power source for the hydraulic system test of the heading machine.

[0004] The application adopts the following technical scheme: an integrated hydraulic power source for the hydraulic system test of a heading machine, comprising:

[0005] A loading oil source module, the loading oil source module comprises five groups of parallel pump oil assemblies, wherein three groups of pump oil 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; and the other two groups of pump oil assemblies are used for pumping oil in the oil tank to a first plate cooler and a second plate cooler respectively;

[0006] A tested system oil source module, the tested system oil source module comprises a frequency conversion motor, a rotating speed and torque sensor, a bearing box and a tested pump mounting mechanism arranged in sequence, and the tested pump is mounted on the tested pump mounting mechanism;

[0007] A control valve module, the control valve module is used for controlling the loading oil source module to supply oil to the tested system oil source module and a loading system;

[0008] The test system oil source module, the control valve module, and the loading system return oil to the oil tank through an oil return pipeline.

[0009] In some embodiments, the five groups of parallel pump oil assemblies respectively include:

[0010] A first motor drives a first plunger pump that pumps oil in the oil tank into a first working oil port;

[0011] A second motor drives a second plunger pump that pumps oil in the oil tank into a second working oil port;

[0012] A third motor drives a first screw pump that pumps oil in the oil tank into a third working oil port;

[0013] A fourth motor drives a second screw pump that pumps oil in the oil tank into a first plate cooler;

[0014] A fifth motor drives a third screw pump that pumps oil in the oil tank into a second plate cooler.

[0015] 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 a first high-pressure filter, the oil outlet of the first high-pressure filter is in communication with the oil inlet of a first overflow valve and a first working oil port of a loading oil source module, and the oil outlet of the first overflow valve is in communication with the oil tank;

[0016] The second motor drives a 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 of a second high-pressure filter through a pipeline, the oil outlet of the second high-pressure filter is in communication with the oil inlet of a second overflow valve and a second working oil port of a loading oil source module, and the oil outlet of the second overflow valve is in communication with the oil tank;

[0017] The third motor drives a 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 in communication with the oil inlet of a third high-pressure filter and the oil inlet of a third overflow valve, the oil outlet of the third overflow valve is connected to the oil tank, and the oil outlet of the third high-pressure filter is in communication with a third working oil port of a loading oil source module;

[0018] The fourth motor drives a 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 in communication with the oil inlet of a first plate cooler, the oil outlet of the first plate cooler is in communication with the oil inlet of a first pipeline filter, and the oil outlet of the first pipeline filter is in communication with the oil tank;

[0019] The fifth motor drives the third screw pump, the oil suction port of the third screw pump is connected with the oil tank through a pipeline, the oil outlet of the third screw pump is communicated with the oil inlet of the second plate cooler, the oil outlet of the second plate cooler is communicated with the oil inlet of the second pipeline filter, and the oil outlet of the second pipeline filter is communicated with the oil tank.

[0020] In some embodiments, the oil tank is connected with the first return filter and the second return filter respectively, the oil outlet of the first return filter is communicated with the proportional overflow valve; and the oil outlet of the second return filter is communicated with the oil return port of the loading oil source module.

[0021] In some embodiments, the oil tank is communicated with the air filter oil port;

[0022] In some embodiments, the oil tank is communicated with the oil port of the oil pollution monitor.

[0023] In some embodiments, the control valve module comprises:

[0024] The three-position four-way directional valve is communicated with the LS port of the test pump through the P port, communicated with the oil tank through the T port, communicated with the oil outlet of the test pump through the A port, 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 directional valve is communicated with the LS control oil port of the control valve module;

[0025] The fourth high-pressure filter is communicated with the oil outlet of the test pump through the oil inlet, and a one-way valve is arranged therebetween;

[0026] The two-position two-way proportional flow valve is communicated with the oil outlet of the fourth high-pressure filter through the oil inlet, and a flow sensor is arranged therebetween, and the oil outlet of the two-position two-way proportional flow valve is communicated with the fourth working oil port of the control valve module;

[0027] The proportional overflow valve is communicated with the oil outlet of the fourth high-pressure filter through the oil inlet, and the oil outlet of the proportional overflow valve is communicated with the oil inlet of the first return filter.

[0028] In some embodiments, the loading system comprises:

[0029] The oil cylinder loading circuit is communicated with the first working oil port of the loading oil source module through the oil inlet;

[0030] The control circuit is communicated with the second working oil port through the oil inlet;

[0031] The motor loading circuit is communicated with the third working oil port through the oil inlet;

[0032] The test trial excavator hydraulic circuit, the oil inlet of the test trial excavator hydraulic circuit is communicated with the fourth working oil port of the control valve module, and the LS control oil port of the control valve module is communicated with the load feedback port of the test trial excavator hydraulic circuit;

[0033] The oil return ports of all circuits of the loading system are communicated with the oil tank.

[0034] According to the test requirement, the set values of the first overflow valve, the second overflow valve, the third overflow valve and the proportional overflow valve are adjusted, the maximum pressure values are set for the first working oil port, the second working oil port, the third working oil port and the fourth working oil port, the two-position two-way proportional flow valve is switched to the right position, and the valve port is opened to the maximum; if the test trial excavator hydraulic system needs to provide variable displacement power oil, the three-position four-way reversing valve is switched to the left position, and if the test trial excavator hydraulic system needs to provide fixed displacement power oil, the three-position four-way reversing valve is switched to the right position.

[0035] The variable frequency motor, the first motor, the second motor and the third motor are started to provide power oil for the operation and loading of the test hydraulic system.

[0036] The fourth motor and the fifth motor are started to circulate and cool the hot oil in the oil tank.

[0037] When the excavator hydraulic pump loading test is performed, the LS control oil port is connected with the pilot control oil of the excavator hydraulic system, the two-position two-way proportional flow valve is switched to the right position, the throttle opening size of the proportional flow valve is adjusted through the electric signal, the load is simulated, the parameter changes of the test pump are detected through the speed and torque sensor, the flow sensor and the pressure sensor, and the performance is verified.

[0038] Compared with the prior art, the present application has the following beneficial effects:

[0039] (1) The present application realizes that multiple independent, adjustable and controllable hydraulic power oils are provided for the test trial excavator hydraulic test system in one power source, an independent circulating cooling system is arranged, oil cooling can be performed during the test interval, the cooling pump can be started according to the heat generation of the system, and reliable supply of power oil is realized.

[0040] (2) The present application can realize the simulated load loading of the test trial excavator hydraulic pump through the control and adjustment of the two-position two-way proportional flow valve and the three-position four-way reversing valve, the parameter changes are monitored through the speed and torque sensor, the flow sensor and the pressure sensor, and the performance test of the test pump is realized.

[0041] (4) The present application is integrated, the on-demand supply of multiple power oils and the simulated load test of the test pump are realized in one device, the functions are multiple, the occupied space is small, the modular pipeline interface is simple to operate. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a layout schematic diagram of a hydraulic power source for a hydraulic system test of a heading machine;

[0043] Figure 2 It is a structural schematic diagram of a loading oil source module;

[0044] Figure 3 It is a left view of Figure 2 ;

[0045] Figure 4 It is a structural schematic diagram of a test system oil source module;

[0046] Figure 5 It is a structural schematic diagram of a control valve module;

[0047] Figure 6 It is a hydraulic principle schematic diagram of a hydraulic power source;

[0048] 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 oil return filter; 124 - second oil return filter; 125 - air cleaner; 126 - oil pollution monitor; 127 - first working oil port; 128 - second working oil port; 129 - third working oil port; 130 - oil return port; 2 - test system oil source module; 21 - second base; 22 - frequency conversion motor; 23 - torque instrument installation support; 24 - bearing box; 25 - test pump installation mechanism; 26 - rotation speed and 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

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0050] An integrated hydraulic power source for test of hydraulic system of a tunneling machine, comprising:

[0051] A loading oil source module 1, comprising five groups of parallel pump oil assemblies, wherein three groups of pump oil assemblies are used to pump oil in an oil tank 102 to a first working oil port 127, a second working oil port 128 and a third working oil port 129 respectively; and the other two groups of pump oil assemblies are used to pump oil in the oil tank 102 to a first plate cooler 117 and a second plate cooler 121 respectively;

[0052] A test system oil source module 2, comprising a variable frequency motor 22, a rotating speed and torque sensor 26, a bearing box 24 and a test pump mounting mechanism 25 arranged in sequence, and a test pump is mounted on the test pump mounting mechanism 25; the variable frequency motor 22 is mounted on a second base 21, an output shaft of the variable frequency motor 22 is connected with the rotating speed and torque sensor 26 through a shaft coupling, the rotating speed and torque sensor 26 is mounted on a torque instrument mounting bracket 23, the rotating speed and torque sensor 26 is connected with one end of the bearing box 24 through a shaft coupling, the test pump is mounted on the test pump mounting mechanism 25, and an input shaft of the test pump is connected with the other end of the bearing box 24; power is transmitted from the variable frequency motor 22 to the test pump through the shaft coupling, the rotating speed and torque sensor 26 and the bearing box 24 in sequence;

[0053] A control valve module 3, used for controlling oil supply of the loading oil source module 1 to the test system oil source module 2 and a loading system;

[0054] The test system oil source module 2, the control valve module 3 and the loading system return oil to the oil tank 102 through an oil return pipeline.

[0055] The loading oil source module 1, the test 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 test system oil source module 2. The three modules are connected through pipelines to complete circulation of oil. (See Figure 1 、 Figure 6 )

[0056] The loading oil source module 1 comprises 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 oil return filter 123, a second oil return filter 124, an air filter 125, an oil pollution 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.

[0057] The first motor 103 is fixedly connected with the first base 101, the first motor 103 drives the first plunger pump 104, the oil suction port of the first plunger pump 104 is connected with the oil tank 102 through a pipeline, the oil outlet of the first plunger pump 104 is connected with the oil inlet of the first high-pressure filter 105, the oil outlet of the first high-pressure filter 105 is in communication with 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 in communication with the oil tank 102.

[0058] The second motor 107 is fixedly connected with the first base 101, the second motor 107 drives the second plunger pump 108, the oil suction port of the second plunger pump 108 is connected with the oil tank 102 through a pipeline, the oil outlet of the second plunger pump 108 is connected with the oil inlet of the second high-pressure filter 109 through a pipeline, the oil outlet of the second high-pressure filter 109 is in communication with 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 in communication with the oil tank 102.

[0059] The third motor 111 is fixedly connected with the first base 101, the third motor 111 drives the first screw pump 112, the oil suction port of the first screw pump 112 is connected with the oil tank 102 through a pipeline, the oil outlet of the first screw pump 112 is in communication 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 with the oil tank 102, and the oil outlet of the third high-pressure filter 114 is in communication with the third working oil port 129 of the loading oil source module 1.

[0060] The fourth motor 115 is fixedly connected with the first base 101, the fourth motor 115 drives the second screw pump 116, the oil suction port of the second screw pump 116 is connected with the oil tank 102 through a pipeline, the oil outlet of the second screw pump 116 is communicated with the oil inlet of the first plate cooler 117, the oil outlet of the first plate cooler 117 is communicated with the oil inlet of the first pipeline filter 118, and the oil outlet of the first pipeline filter 118 is communicated with the oil tank 102.

[0061] The fifth motor 119 is fixedly connected with the first base 101, the fifth motor 119 drives the third screw pump 120, the oil suction port of the third screw pump 120 is connected with the oil tank 102 through a pipeline, the oil outlet of the third screw pump 120 is communicated with the oil inlet of the second plate cooler 121, the oil outlet of the second plate cooler 121 is communicated with the oil inlet of the second pipeline filter 122, and the oil outlet of the second pipeline filter 122 is communicated with the oil tank 102.

[0062] The first oil return filter 123 is fixed above the oil tank 102, the oil inlet of the first oil return filter 123 is communicated with the oil return port 130 of the loading oil source module 1, and the oil outlet of the first oil return filter 123 is communicated with the oil tank 102.

[0063] The second oil return filter 124 is fixed above the oil tank 102, the oil inlet of the second oil return filter 124 is communicated with the oil outlet of the proportional overflow valve 35, and the oil outlet of the second oil return filter 124 is communicated with the oil tank 102.

[0064] The air filter 125 is fixed above the oil tank 102, and the oil port is communicated with the oil tank 102; the oil liquid pollution monitor 126 is fixed below the oil tank 102, and the oil port is communicated with the oil tank 102. (See Figure 2 、 Figure 3 )

[0065] The test system oil source module 2 comprises a second base 21, a frequency conversion motor 22, a torque instrument mounting bracket 23, a bearing box 24 and a test pump mounting mechanism 25 are sequentially arranged on the second base 21 in the order from right to left, and a rotating speed and torque sensor 26 is arranged above the torque instrument mounting bracket 23.

[0066] The frequency conversion motor 22 is fixedly connected with the second base 21, the torque instrument mounting bracket 23 is fixedly connected with the second base 21, the bearing box 24 is fixedly connected with the second base 21, the rotating speed and torque sensor 26 is fixedly connected with the torque instrument mounting bracket 23, the test system pump is fixedly connected with the test pump mounting mechanism 25, and the output shaft of the frequency conversion motor 22 is sequentially connected with the input shaft of the test system pump through a shaft coupling, the rotating speed and torque sensor 26 and the bearing box 24. (See Figure 4 )

[0067] The control valve module 3 comprises a third base 31, a three-position four-way directional 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 overflow valve 35, and a fourth working oil port 36 and an LS control oil port 37.

[0068] The P port of the three-position four-way directional valve 32 is communicated with the LS port of the test pump, the T port is communicated with the oil tank 102, the A port is communicated with the pump oil outlet, a throttle valve is arranged between the A port and the pump oil outlet, and the B port is communicated with the LS control oil port 37 of the control valve module; the oil outlet of the test pump is used for outputting high-pressure power oil to a load, a throttle valve is arranged between the A port of the three-position four-way directional valve 32 and the oil outlet of the test pump, and the load can be simulated.

[0069] The oil inlet of the fourth high-pressure filter 33 is communicated with the oil outlet of the test pump, and a one-way valve is arranged therebetween; the oil outlet of the fourth high-pressure filter 33 is communicated with the oil inlet of the proportional flow valve 34, and a flow sensor is arranged therebetween; the oil outlet of the proportional flow valve 34 is communicated with the fourth working oil port 36 of the control valve module; the oil inlet of the proportional overflow valve 35 is communicated with the oil outlet of the fourth high-pressure filter 33; and the oil outlet of the proportional overflow valve 35 is communicated with the oil inlet of the second oil return filter 124 (see Figure 5 ).

[0070] The hydraulic power source of the roadheader hydraulic system test bench comprises a main oil tank, a roadheader oil supply circuit, a motor loading oil supply circuit, an oil cylinder loading oil supply circuit, a pilot control oil supply circuit, a circulating cooling circuit and a residual oil recovery circuit. The hydraulic power source is connected with the roadheader hydraulic system, the test bench loading module and the pilot control module through pipelines, provides power oil for the whole test bench system, and completes the cooling, filtering, recovery and monitoring of the hydraulic oil used by the test bench. The oil suction port of the roadheader oil supply circuit is connected with the main oil tank to suck oil from the main oil tank, and the oil outlet is connected with the oil inlet of the roadheader multi-way directional valve in the valve loading module to provide pressure oil for the roadheader hydraulic system. The oil suction port of the motor loading oil supply circuit is communicated with the main oil tank to suck oil from the main oil tank, and the oil outlet is communicated with 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 oil cylinder loading oil supply circuit is communicated with the main oil tank to suck oil from the main oil tank, and the oil outlet is connected with the oil inlet of the loading oil cylinder in the oil cylinder loading module to provide pressure oil for the loading oil cylinder. The oil suction port of the pilot control oil supply circuit is communicated with the main oil tank to suck oil from the main oil tank, and the oil outlet is communicated with the P port of the electromagnetic three-position four-way directional valve in the pilot control module to provide pressure oil for the pilot control module. The oil inlet of the circulating cooling circuit is communicated with the low-position oil port of the main oil tank to suck oil from the main oil tank, and the oil outlet is communicated with the high-position oil port of the main oil tank to realize the circulating cooling and filtering of the oil. The oil inlet of the residual oil recovery circuit is communicated with the oil collecting tank, and the oil outlet is connected with the main oil tank. The leaked oil in the test process is filtered and recovered to the main oil tank for reuse, thereby avoiding environmental pollution.

[0071] Workflow:

[0072] When the hydraulic system test of the heading machine is performed, the hydraulic power source supplies oil to the tested hydraulic system and the loading system. The multi-union pump of the tested heading machine is installed in the oil source module of the tested system. The first working oil port of the loading oil source module is communicated with the oil inlet of the cylinder loading circuit, the second working oil port is communicated with the oil inlet of the control circuit, the third working oil port is communicated with the oil inlet of the motor loading circuit, and the oil return port is communicated with the oil return ports of all circuits of the test system. The fourth working oil port of the control valve module is communicated with the oil inlet of the hydraulic circuit of the tested heading machine, and the LS control oil port of the control valve module is communicated with the load feedback port of the hydraulic circuit of the tested heading machine. According to the needs of the test system, the set values of the first overflow valve, the second overflow valve, the third overflow valve and the proportional overflow valve are adjusted, the maximum pressure values of the first working oil port, the second working oil port, the third working oil port and the fourth working oil port are set, the proportional flow valve is switched to the right position, and the valve port is opened to the maximum. If the tested heading hydraulic system needs to provide variable displacement power oil, the three-position four-way reversing valve is switched to the left position, and if the tested heading hydraulic system needs to provide constant displacement power oil, the three-position four-way reversing valve is switched to the right position. The variable frequency motor, the first motor, the second motor and the third motor are started to provide power oil for the operation and loading of the hydraulic system of the heading machine. The fourth motor and the fifth motor are started to circulate and cool the hot oil in the oil tank.

[0073] When the hydraulic pump loading test of the heading machine is performed, the LS control oil port is connected with the external pilot control oil, the two-position two-way proportional flow valve is switched to the right position, the size of the throttle opening of the proportional flow valve is adjusted by the electric signal, the load is simulated, and the parameter changes of the tested pump are detected by the rotation speed and torque sensor, the flow sensor and the pressure sensor to verify the performance.

[0074] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated hydraulic power source for testing the hydraulic system of a roadheader, characterized in that: include: A loading oil source module (1), the loading oil source module (1) comprising 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; and 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. A test system oil source module (2), the test system oil source module (2) comprising a variable frequency motor (22), a speed torque sensor, a bearing box (24), and a test pump mounting mechanism (25) arranged in sequence, with the test system pump being mounted on the test pump mounting mechanism (25); A control valve module (3), 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 test system return the oil to the oil tank (102) through the oil return pipeline; 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 the first plate cooler (117); a fifth motor (119), the fifth motor (119) driving a third screw pump (120), the third screw pump (120) pumping oil in the oil tank (102) into a second plate cooler (121); The loading system includes: An oil cylinder loading circuit, wherein the oil inlet of the oil cylinder loading circuit is connected to the first working oil port (127) of the loading oil source module (1); A control circuit, wherein the oil inlet of the control circuit is connected to the second working oil port (128); a motor loading circuit, wherein the oil inlet of the motor loading circuit is connected to the third working oil port (129); The 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 circuits of the loading system are connected to the oil tank (102).

2. The integrated hydraulic power source for testing the hydraulic system of a roadheader according to claim 1, 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 relief valve (106) and the first working oil port (127) of the loading oil source module (1), and the oil outlet of the first relief 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 relief valve (113); the oil outlet of the third relief 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 connected to the oil inlet of the second plate cooler (121); 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).

3. The integrated hydraulic power source for testing the hydraulic system of a roadheader according to claim 2, 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 the oil outlet of the proportional relief valve (35); the second return oil filter (124) is connected to the return oil port (130) of the loading oil source module (1).

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

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

6. The integrated hydraulic power source for testing the hydraulic system of a roadheader according to claim 3, 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, and 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 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 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 provided 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 (26) of the control valve module (3); A proportional relief valve (35), the oil inlet of the proportional relief valve (35) is communicated with the oil outlet of the fourth high-pressure filter (33), and the oil outlet of the proportional relief valve (35) is communicated with the oil inlet of the first return oil filter (123).

7. The integrated hydraulic power source for testing the hydraulic system of a roadheader according to claim 6, characterized in that: According to the test requirements, adjust 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), and set the maximum pressure value 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 (26); switch the two-position two-way proportional flow valve (34) 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 (32) 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 (32) 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 parameter changes of the tested pump are detected by a speed torque sensor, a flow sensor and a pressure sensor to verify its performance.

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