A mobile test device for hydraulic control module loading

Abstract

The present application provides a mobile test device for hydraulic control module loading. The test device includes: a mobile platform for installing the control module; an oil inlet and return connection block, one end of the oil inlet and return connection block is connected to the control module, and the other end is connected to the oil distribution block of a hydraulic universal test bench; a control chamber oil circuit block connected to the control module, and the control chamber oil circuit block is used to adjust the flow rate and pressure of the hydraulic oil in the control module; a centering oil circuit block connected to the control module, and the centering oil circuit block is used to adjust the flow rate and pressure of the hydraulic oil in the control module. The dedicated mobile measuring device for hydraulic control module provided by the present application is dedicated to the loading test of the hydraulic control module. A loading hydraulic system for the control module is designed, which can simultaneously realize the adjustment of the control chamber load, and can also separately adjust one of the control chambers, and at the same time can meet the function of the centering oil circuit.

Description

Technical Field

[0001] This application belongs to the technical field of hydraulic actuator testing, and particularly relates to a mobile testing device for loading a hydraulic control module. Background Art

[0002] Currently, the general hydraulic test benches used in the field of hydraulic actuator testing usually have four oil circuits, namely two oil inlet circuits and two oil return circuits, which are composed of a pressure reducing valve, a pressure sensor, a flow meter, an oil return overflow valve, a hand valve, a stop valve, etc. Among them, the pressure reducing valve is used to adjust the pressure of the two oil inlet circuits, the oil return overflow valve is used to adjust the pressure of the two oil return circuits, and the pressure sensor and the flow meter are used to measure the pressure and flow of the inlet and return oil.

[0003] The control module installed on the actuator is the core of hydraulic actuator control, and its performance test is particularly crucial. At the same time, to meet the requirements of hierarchical testing, the control module usually needs to be tested separately. Different from the dual-system hydraulic actuator test, in addition to the four oil circuits, the control module also needs five oil circuits for two control chambers and the centering port to measure the pressure and flow of the control chambers, and at the same time use the stop valve to simulate the load change of the control chambers.

[0004] There are currently three main problems with this type of test bench:

[0005] 1. Since the general hydraulic test bench does not have the test function related to the control chamber, it cannot be directly applied to the relevant tests of the control module;

[0006] 2. Redesign according to the special requirements of the control module, which increases the construction cost, and also causes low utilization rate of the hydraulic test bench and a certain degree of resource waste;

[0007] 3. The hydraulic pipeline of the special hydraulic test bench for the control module is complex, resulting in a large installation tabletop, increasing the site cost, and at the same time having low test flexibility. Summary of the Invention

[0008] In view of the above technical problems, this application provides a mobile testing device for loading a hydraulic control module, and the testing device includes:

[0009] A mobile platform for installing the control module;

[0010] An inlet and return oil connection block, one end of which is connected to the control module and the other end is connected to the oil distribution block of the general hydraulic test bench;

[0011] A control chamber oil circuit block, which is connected to the control module and is used to adjust the flow and pressure of the hydraulic oil in the control module;

[0012] The centering oil circuit block is connected to the control module and is used to adjust the flow rate and pressure of the hydraulic oil in the control module.

[0013] Preferably, the inlet and return oil connection block includes:

[0014] A first oil inlet, connected to the oil distribution block of the hydraulic universal test bench;

[0015] A second oil inlet, connected to the oil distribution block of the hydraulic universal test bench;

[0016] A first oil return port, connected to the oil distribution block of the hydraulic universal test bench;

[0017] A second oil return port, connected to the oil distribution block of the hydraulic universal test bench;

[0018] A first oil inlet nozzle, one end of the first oil inlet nozzle is communicated with the first oil inlet, and the other end is connected to the control module;

[0019] A second oil inlet nozzle, one end of the second oil inlet nozzle is communicated with the second oil inlet, and the other end is connected to the control module;

[0020] A first oil return nozzle, one end of the first oil return nozzle is communicated with the first oil return port, and the other end is connected to the control module;

[0021] A second oil return nozzle, one end of the second oil return nozzle is communicated with the first oil return port, and the other end is connected to the control module.

[0022] Preferably, the inlet and return oil connection block further includes:

[0023] A first needle valve, arranged between the first oil inlet nozzle and the first oil inlet;

[0024] A second needle valve, arranged between the second oil inlet nozzle and the second oil inlet;

[0025] A third needle valve, arranged between the first oil return nozzle and the first oil return port;

[0026] A fourth needle valve, arranged between the second oil return nozzle and the second oil return port.

[0027] Preferably, the control module includes:

[0028] A first oil port, communicated with the control cavity oil circuit block;

[0029] A second oil port, communicated with the control cavity oil circuit block;

[0030] A third oil port, communicated with the centering oil circuit block;

[0031] A fourth oil port, communicated with the centering oil circuit block;

[0032] The fifth oil port is communicated with the center return oil circuit block.

[0033] Preferably, the third oil port includes:

[0034] The third sub-oil port is communicated with the center return oil circuit block;

[0035] The third branch oil port is communicated with the center return oil circuit block.

[0036] Preferably, the testing device further includes:

[0037] The fifth needle valve is arranged on the oil path between the first oil port and the control cavity oil circuit block;

[0038] The sixth needle valve is arranged on the oil path between the second oil port and the control cavity oil circuit block;

[0039] The seventh needle valve is arranged on the oil path between the third sub-oil port and the center return oil circuit block;

[0040] The eighth needle valve is arranged on the oil path between the third branch oil port and the center return oil circuit block;

[0041] The ninth needle valve is arranged on the oil path between the fourth oil port and the center return oil circuit block;

[0042] The tenth needle valve is arranged on the oil path between the fifth oil port and the center return oil circuit block.

[0043] Preferably, the moving platform includes:

[0044] An oil leakage plate, on which the control module is arranged.

[0045] Preferably, the testing device further includes:

[0046] An oil collecting tank is arranged below the oil leakage plate, and when replacing the control module, the oil collecting tank is used for collecting the hydraulic oil leaked from the control module.

[0047] The beneficial technical effects of the present application:

[0048] 1. A dedicated mobile measuring device for hydraulic control modules is designed. This device is dedicated to the loading test of hydraulic control modules. A loading hydraulic system for the control module is designed, which can simultaneously adjust the load of the control cavity and can also adjust one of the control cavities alone, and can simultaneously meet the function of the center return oil circuit;

[0049] 2. This device is a mobile test platform, which makes full use of the test resources of the original general hydraulic test bench, avoids re-designing the test bench, and reduces the construction cost and site cost;

[0050] 3. At the same time, since the control module is small in size, only a small number of sensors, throttle valves, valve blocks and other components need to be installed on the dedicated test platform to meet the dedicated test requirements, so the volume of the test platform is reduced;

[0051] 4. The present application adopts a mobile test platform, with a greatly improved flexibility. The throttle valve is designed on the front mounting plate, and the inlet and return oil shut-off valves are installed on the side mounting plate, and the operation is simple and reliable. Description of the Drawings

[0052] Figure 1 is a schematic connection diagram of the general hydraulic test bench provided by the embodiment of the present application;

[0053] Figure 2 is a schematic diagram of the hydraulic loading principle of the mobile test device provided by the embodiment of the present application;

[0054] Figure 3 is a schematic structural diagram of the mobile test device provided by the embodiment of the present application;

[0055] Figure 4 is a top view schematic diagram of the mobile test device provided by the embodiment of the present application;

[0056] Figure 5 is a left view schematic diagram of the mobile test device provided by the embodiment of the present application;

[0057] Wherein: 1 - mobile platform; 2 - connecting plate; 3 - control module; 301 - first oil port; 302 - second oil port; 303 - third oil port; 304 - fourth oil port; 305 - fifth oil port; 4 - inlet and return oil connection block; 401 - first inlet oil port; 402 - second inlet oil port; 403 - first return oil port; 404 - second return oil port; 405 - first inlet oil nozzle; 406 - second inlet oil nozzle; 407 - first return oil nozzle; 408 - second return oil nozzle; 5 - side mounting plate; 6 - front mounting plate; 701 - first needle valve; 702 - second needle valve; 703 - third needle valve; 704 - fourth needle valve; 705 - fifth needle valve; 706 - sixth needle valve; 707 - seventh needle valve; 708 - eighth needle valve; 709 - ninth needle valve; 710 - tenth needle valve; 8 - control chamber oil circuit block; 9 - centering oil circuit block; 10 - oil leakage groove; 11 - oil leakage plate; 12 - oil collecting plate, 13 - original test bench. Detailed Embodiment

[0058] Please refer to Figures 1-5 , Figure 1 In, the hydraulic general test bench is the original test bench 13, and this test bench is connected to the device of the present invention through four hoses, and can provide the inlet and return oil pressure and flow rate of a stable dual system for the present invention.

[0059] Figure 3As shown, a side mounting plate 5 is designed on the side of the mobile platform for mounting the inlet and return oil connection block 4. The inlet and return oil ports and nozzles are mounted on the inlet and return oil connection block 4. As Figure 4 shown, they are respectively the first inlet oil port 401, the second inlet oil port 402, the first return oil port 403, the second return oil port 404, the first inlet nozzle 405, the second inlet nozzle 406, the first return nozzle 407, and the second return nozzle 408. The oil communicates the original test bench 13 and the mobile platform 1 through the inlet and return oil ports mounted on the inlet and return oil connection block 4. When working, the oil flows between the inlet and return oil ports and the nozzles of the control module 3. At the same time Figure 2 shown, the four needle valves, namely the first needle valve 701, the second needle valve 702, the third needle valve 703, and the fourth needle valve 704, can selectively communicate or close the four oil circuits. The controlled object control module 3 is mounted on the mobile platform 1. The oil enters the control module 3 through the inlet and return oil ports on the inlet and return oil connection block 4, then is distributed inside the control module 3, and then flows through the first oil port 301, the second oil port 302, the third oil port 303, the fourth oil port 304, and the fifth oil port 305 of the control module 3. The five oil ports lead to the control cavity oil circuit block 8 and the centering oil circuit block 9 mounted below the mobile platform 1 through hoses connected to the connecting plate 2 on the side of the mobile platform 1.

[0060] As Figure 2 、 Figure 3 shown, the fifth needle valve 705, the sixth needle valve 706, the seventh needle valve 707, the eighth needle valve 708, the ninth needle valve 709, and the tenth needle valve 710 are mounted on the front mounting plate 6. Two pressure gauges P and a flowmeter L1 are mounted on the control cavity oil circuit block 8. The oil can flow into or out of the first oil port 301, the fifth needle valve 705, the flowmeter L1, the sixth needle valve 706, and the second oil port 302. By adjusting the opening degrees of the fifth needle valve 705 and the sixth needle valve 706, the pressure difference between the first oil port 301 and the second oil port 302 on the control module 3 changes. At this time, a load is applied to the control module 3 to achieve load control.

[0061] Similarly, when the seventh needle valve 707 and the eighth needle valve 708 on the centering oil port block 9 are closed, which is equivalent to closing the third oil port 303, by adjusting the opening degrees of the ninth needle valve 709 and the tenth needle valve 710, the pressure difference between the fourth oil port 304 and the fifth oil port 305 on the control module 3 changes, and a load can also be applied to the control module 3 to achieve load control.

[0062] When the 3-control module system malfunctions, the oil can only flow through the third oil port 303. At this time, the fifth needle valve 705, the sixth needle valve 706, the seventh needle valve 707, and the tenth needle valve 710 are closed, while the eighth needle valve 708 and the ninth needle valve 709 are opened. The oil will return to the control module through the third oil port 303, the flowmeter L2, and the fourth oil port 304, realizing the oil return function and detecting the centering flow rate. Similarly, the fifth needle valve 705, the sixth needle valve 706, the seventh needle valve 708, and the eighth needle valve 709 are closed, while the seventh needle valve 707 and the tenth needle valve 710 are opened. The oil will return to the control module 3 through the third oil port 303, the flowmeter L2, and the fifth oil port 305, realizing the oil return function and detecting the centering flow rate.

[0063] As Figure 4 , 5 shown, when the control module 3 to be measured needs to be replaced, the oil pipe needs to be disassembled. At this time, the oil in the oil pipe will inevitably spill onto the moving platform 1. The spilled oil can enter the oil collecting plate 12 installed below the oil leakage plate 11 through the oil leakage plate 11. At the same time, the disassembled pipeline can extend into the oil collecting plate 12 below through the oil leakage groove 10 to prevent the oil from spilling everywhere.

[0064] This application designs a mobile measuring device for hydraulic control modules, which is specifically used for the loading test of hydraulic control modules.

[0065] This application designs a loading hydraulic system for the control module, which can simultaneously adjust the load of the control chamber and can also adjust one of the control chambers separately. At the same time, it can meet the function of the centering oil circuit. This device is a mobile test platform, which makes full use of the test resources of the original general hydraulic test bench, avoiding the need to redesign the test bench and reducing the construction cost and site cost.

[0066] At the same time, the control module is small in size. Only a few sensors, throttle valves, valve blocks and other components need to be installed on the dedicated test platform to meet the dedicated test requirements. Therefore, the volume of the test platform is reduced. The present invention adopts a mobile test platform, which greatly improves the flexibility. In this application, the throttle valve is designed on the front mounting plate 6, and the inlet and return oil stop valves are installed on the side mounting plate 5, making the operation simple and reliable.

Claims

1. A mobile test device for hydraulic control module loading, characterized in that, The test device includes: A mobile platform for installing a control module. A side mounting plate is designed on the side of the mobile platform for installing an inlet and return oil connection block, and a control chamber oil circuit block and a centering oil circuit block are installed below the mobile platform; An inlet and return oil connection block, one end of which is connected to the control module and the other end is connected to a manifold block of a hydraulic universal test bench; A control chamber oil circuit block, which is connected to the control module and is used to adjust the flow rate and pressure of the hydraulic oil in the control module; A centering oil circuit block, which is connected to the control module and is used to adjust the flow rate and pressure of the hydraulic oil in the control module; Among them, the inlet and return oil connection block includes: A first oil inlet, which is connected to the manifold block of the hydraulic universal test bench; A second oil inlet, which is connected to the manifold block of the hydraulic universal test bench; A first oil return port, which is connected to the manifold block of the hydraulic universal test bench; A second oil return port, which is connected to the manifold block of the hydraulic universal test bench; A first oil inlet nozzle, one end of which is communicated with the first oil inlet and the other end is connected to the control module; A second oil inlet nozzle, one end of which is communicated with the second oil inlet and the other end is connected to the control module; A first oil return nozzle, one end of which is communicated with the first oil return port and the other end is connected to the control module; A second oil return nozzle, one end of which is communicated with the first oil return port and the other end is connected to the control module; The inlet and return oil connection block further includes: A first needle valve, which is arranged between the first oil inlet nozzle and the first oil inlet; A second needle valve, which is arranged between the second oil inlet nozzle and the second oil inlet; A third needle valve, which is arranged between the first oil return nozzle and the first oil return port; A fourth needle valve, which is arranged between the second oil return nozzle and the second oil return port; Among them, the four needle valves of the first needle valve, the second needle valve, the third needle valve and the fourth needle valve selectively communicate or close the four oil circuits; the oil fluid enters the control module through the inlet and return oil ports on the inlet and return oil connection block, and then is distributed inside the control module.

2. The mobile test device for hydraulic control module loading according to claim 1, characterized in that, The control module includes: A first oil port, which is communicated with the control chamber oil circuit block; A second oil port, which is communicated with the control chamber oil circuit block; A third oil port, which is communicated with the centering oil circuit block; A fourth oil port, which is communicated with the centering oil circuit block; A fifth oil port, which is communicated with the centering oil circuit block.

3. The mobile test device for hydraulic control module loading according to claim 2, characterized in that, The third oil port includes: A third sub-oil port, which is communicated with the centering oil circuit block; A third branch oil port, which is communicated with the centering oil circuit block.

4. The mobile test device for hydraulic control module loading according to claim 3, characterized in that, The test device further includes: A fifth needle valve, which is arranged on the oil circuit between the first oil port and the control chamber oil circuit block; A sixth needle valve, which is arranged on the oil circuit between the second oil port and the control chamber oil circuit block; A seventh needle valve, which is arranged on the oil circuit between the third sub-oil port and the centering oil circuit block; An eighth needle valve, which is arranged on the oil circuit between the third branch oil port and the centering oil circuit block; A ninth needle valve, which is arranged on the oil circuit between the fourth oil port and the centering oil circuit block; A tenth needle valve, which is arranged on the oil circuit between the fifth oil port and the centering oil circuit block.

5. The mobile test device for hydraulic control module loading according to claim 4, characterized in that, The mobile platform includes: Oil leakage plate, and the control module is arranged on the oil leakage plate.

6. The mobile test device for hydraulic control module loading according to claim 5, characterized in that, The test device further includes: An oil collecting tank, which is arranged below the oil leakage plate. When replacing the control module, the oil collecting tank is used to collect the hydraulic oil leaked from the control module.

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