A dual system hydraulic test bench for testing an aircraft brake assembly

Abstract

The utility model discloses a double system hydraulic test board for aviation airplane brake assembly test, it includes test board casing, hydraulic oil tank, two hydraulic lines and two hydraulic collecting boxes, and the hydraulic oil tank and two hydraulic lines all are established in test board casing, and two hydraulic collecting boxes are respectively established in the both sides of test board casing, and two hydraulic collecting boxes are connected on two hydraulic lines respectively, and two hydraulic lines are respectively equipped with plunger pump, and two hydraulic lines are connected each other through the communicating pipeline, and is equipped with pressure intercommunication valve on the communicating pipeline, and can provide hydraulic pressure for two hydraulic lines through a plunger pump after opening pressure intercommunication valve, and can be connected more than one hydraulic hose on the hydraulic collecting box, and can be connected the test connector of different models for connecting with brake assembly on the outer end of different hydraulic hoses. The utility model can realize the simultaneous test to multiple brake assemblies, and improves test efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft brake component testing technology, specifically relating to a dual-system hydraulic test bench for testing aircraft brake components. Background Technology

[0002] With the booming development of the aviation industry and the surge in the number of aircraft, more stringent requirements have been placed on the maintenance cycle of critical aircraft components—the braking system. Against this backdrop, the hydraulic test bench, as an indispensable tool for ensuring the performance of the braking system, directly affects the overall quality and speed of maintenance operations.

[0003] However, the hydraulic testing equipment currently widely used in the market is limited to single brake testing functions and cannot meet the need to test multiple brake components simultaneously, which poses a challenge to the timeliness and cost control of maintenance work.

[0004] Therefore, it is particularly important and urgent to develop an innovative hydraulic test bench that can simultaneously test multiple different types of brake components. Utility Model Content

[0005] The purpose of this invention is to provide a dual-system hydraulic test bench for testing aircraft brake components.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A dual-system hydraulic test bench for testing aircraft brake components is characterized by comprising a test bench housing, a hydraulic oil tank, two hydraulic lines, and two hydraulic manifolds. The hydraulic oil tank and the two hydraulic lines are all housed within the test bench housing. The two hydraulic manifolds are located on opposite sides of the test bench housing and are connected to the two hydraulic lines respectively. Each of the two hydraulic lines is equipped with a plunger pump. The two hydraulic lines are interconnected via a connecting pipe. A pressure connecting valve is provided on the connecting pipe. When the pressure connecting valve is opened, hydraulic pressure can be simultaneously supplied to both hydraulic lines by a single plunger pump. The hydraulic manifolds can be connected to one or more hydraulic hoses, and different types of test connectors for connecting to brake components can be connected to the outer ends of the different hydraulic hoses.

[0008] A further technical solution of this utility model is as follows: the hydraulic manifold is provided with a hydraulic inlet and outlet, the hydraulic pipeline includes a hydraulic output pipeline and a hydraulic return pipeline, the input end and output end of the hydraulic output pipeline are respectively connected to the hydraulic oil output end of the hydraulic oil tank and the hydraulic inlet and outlet of the hydraulic manifold, the plunger pump is provided at the input end of the hydraulic output pipeline, a hydraulic shut-off valve is provided on the hydraulic output pipeline near the output end, the input end and output end of the hydraulic return pipeline are respectively connected to the hydraulic inlet and outlet of the hydraulic manifold and the hydraulic oil return end of the hydraulic oil tank, and a pressure relief valve is provided on the hydraulic return pipeline near the input end.

[0009] A further technical solution of this utility model is: an output oil filter is provided at the output end of the hydraulic output pipeline near the output end of the plunger pump, and a return oil filter is provided at the output end of the hydraulic return pipeline.

[0010] A further technical solution of this utility model is: the hydraulic manifold box is provided with one or more interfaces for connecting hydraulic hoses.

[0011] A further technical solution of this utility model is that pressure gauges are provided on the two hydraulic pipelines respectively.

[0012] A further technical solution of this utility model is: each pressure gauge is provided with a metering port that is connected to the pressure gauge.

[0013] A further technical solution of this utility model is: an overflow valve is provided between the hydraulic output pipeline and the hydraulic return pipeline.

[0014] A further technical solution of this utility model is: a working platform is provided on the front of the test bench housing, and a tool placement platform is provided on the side of the test bench housing.

[0015] A further technical solution of this utility model is: the side of the test bench housing is provided with a hose hook for suspending the hydraulic hose.

[0016] A further technical solution of this utility model is: an oil temperature sensor and an oil level sensor are provided on the hydraulic oil tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model is equipped with two hydraulic lines, each with a plunger pump and a hydraulic manifold, which integrates two relatively independent hydraulic systems. The two hydraulic systems can work simultaneously, and different types of test connectors can be connected to the hydraulic manifold via hydraulic hoses. This enables simultaneous testing of multiple brake components, improving testing efficiency.

[0019] Meanwhile, the two hydraulic lines of this utility model are connected by a connecting line, and a pressure connecting valve is installed on the connecting line. After the pressure connecting valve is opened, hydraulic pressure can be supplied to the two hydraulic lines simultaneously through a plunger pump (for example, in the case of failure of one of the plunger pumps), which better improves the testing efficiency and resource utilization, and also makes the use of the dual-system hydraulic test bench more flexible. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the dual-system hydraulic test bench according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the dual-system hydraulic test bench with the front panel hidden according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the dual-system hydraulic test bench with the test bench housing hidden in an embodiment of this utility model;

[0023] Figure 4 This is a structural schematic diagram of the hydraulic manifold box in an embodiment of this utility model;

[0024] Figure 5 This is one of the structural schematic diagrams of the hydraulic oil tank and its components according to an embodiment of this utility model;

[0025] Figure 6 This is the second structural schematic diagram of the hydraulic oil tank and its components according to an embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the circuit box according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the hydraulic pipeline of the dual-system hydraulic test bench according to an embodiment of this utility model.

[0028] Meaning of the labels in the attached diagram:

[0029] 1-Test bench housing; 2-Test connector; 3-Hydraulic hose; 5-Tool placement platform; 6-Working platform; 7-Hose hook; 8-High pressure gauge; 9-Medium pressure gauge; 10-Low pressure gauge; 11-Gasmeter port; 12-Control valve; 13-Hydraulic shut-off valve; 14-Pressure relief valve; 15-Low pressure adjusting handle; 16-High pressure adjusting handle; 17-Control panel; 18-Circuit box; 19-Platform drain port; 20-Cast wheel; 21-Hydraulic oil tank; 22-Oil quantity indicator; 23-Drain pipe; 24-Return oil filter; 25-Plunger pump; 26-Hydraulic pipeline; 27-Pressure connecting valve; 28-Hydraulic manifold Flow box; 29-Interface; 30-Connecting pipeline; 31-Output oil filter; 32-Hydraulic inlet / outlet; 33-Oil temperature sensor; 34-Oil level sensor; 35-Filling port; 36-Emergency stop button; 37-Hydraulic oil over-temperature alarm light; 38-Plunger pump stop button; 39-Plunger pump start button; 40-Low oil level alarm light; 41-Return oil filter alarm light; 42-Output oil filter alarm light; 43-Power indicator light; 44-Hydraulic output pipeline; 45-Hydraulic return pipeline; 46-Relief valve; 47-Back pressure valve; 48-High pressure ball valve; 49-Stainless steel needle valve; 50-Overpressure protector. Detailed Implementation

[0030] The present invention will be further described below with reference to embodiments.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Example:

[0035] like Figures 1 to 8The image shows a dual-system hydraulic test bench for testing aircraft brake components according to this embodiment. It includes a test bench housing 1, a hydraulic oil tank 21, two hydraulic lines 26, and two hydraulic manifolds 28.

[0036] A work platform 6 is provided on the front of the test bench housing 1, and a tool placement platform 5 is provided on the side of the test bench housing 1. During use, maintenance materials such as manuals and work cards can be placed on the work platform 6, and testing tools can be placed on the tool placement platform 5. Casters 20 are provided on the bottom of the test bench housing 1 for easy movement of the test bench. The test bench housing 1 is divided into upper and lower parts, as shown below. Figure 2 As shown, the hydraulic oil tank 21 is located at the lower part of the test bench housing 1. An oil temperature sensor 33 for measuring the internal hydraulic oil temperature and an oil level sensor 34 for measuring the hydraulic oil level are located on the top of the hydraulic oil tank 21. A conventional oil level indicator 22 is located on the front of the hydraulic oil tank 21, allowing a direct view of the oil level inside. A drain pipe 23 is located at the bottom of the hydraulic oil tank 21, and a drain valve is installed on the drain pipe 23. Opening the drain valve allows the hydraulic oil in the hydraulic oil tank 21 to be drained. An oil filler port 35 is also located on the top of the hydraulic oil tank 21, and the oil filler port 35 is covered with a cap.

[0037] Two hydraulic manifolds 28 are respectively located on the middle of the two outer sides of the test bench housing 1. Each hydraulic manifold 28 is elongated and hollow inside. One end of each hydraulic manifold 28 has a hydraulic inlet / outlet 32. The front of each hydraulic manifold 28 has one or more interfaces 29. In this embodiment, seven interfaces 29 are specifically provided. Four of these interfaces 29 are connected to hydraulic hoses 3, while the remaining interfaces 29 not connected to hydraulic hoses 3 are temporarily sealed with interface plugs. Different types of test connectors 2 for connecting to brake components can be connected to the outer ends of different hydraulic hoses 3, thus enabling simultaneous testing of multiple brake components. The remaining interfaces 29 not connected to hydraulic hoses 3 can also be connected to test connectors 2 via hydraulic hoses 3 if needed later. A hose hook 7 is provided on the side of the test bench housing 1, allowing the hydraulic hoses 3 to be suspended.

[0038] A control panel 17 is provided on the upper front of the test bench housing 1. Two hydraulic lines 26 are located in the upper space of the test bench housing 1, respectively on both sides, and each of the two hydraulic lines 26 is equipped with a plunger pump 25. The specific structure of the hydraulic lines 26 in this embodiment is as follows: Figure 8As shown, it includes a hydraulic output line 44 and a hydraulic return line 45. The input and output ends of the hydraulic output line 44 are connected to the hydraulic oil output end of the hydraulic oil tank 21 and the hydraulic inlet / outlet 32 ​​of the hydraulic manifold 28, respectively. A plunger pump 25 is located at the input end of the hydraulic output line 44. An output oil filter 31, which is a high-pressure oil filter, is located on the hydraulic output line 44 near the output end of the plunger pump 25. A hydraulic shut-off valve 13 is located on the hydraulic output line 44 near the output end. The input and output ends of the hydraulic return line 45 are connected to the hydraulic inlet / outlet 32 ​​of the hydraulic manifold 28 and the hydraulic oil return end of the hydraulic oil tank 21, respectively. A pressure relief valve 14 is located on the hydraulic return line 45 near the input end, and a return oil filter 24 is located at the output end of the hydraulic return line 45. The plunger pump 25 and the output oil filter 31 are installed on top of the hydraulic oil tank 21, and the return oil filter 24 is installed on the side of the hydraulic oil tank 21. The output oil filter 31 and the return oil filter 24 are used to filter impurities in the hydraulic oil to ensure the stability and reliability of the system operation.

[0039] In this embodiment, the two hydraulic lines 26 are connected to each other through a connecting line 30. A pressure connecting valve 27 is provided on the connecting line 30. The operating handle of the pressure connecting valve 27 is exposed on the control panel 17. After the pressure connecting valve 27 is opened, hydraulic pressure can be supplied to both hydraulic lines 26 simultaneously through one of the plunger pumps 25, thereby improving the testing efficiency and resource utilization, and making the use of the dual-system hydraulic test bench more flexible.

[0040] In this embodiment, pressure gauges are installed on the two hydraulic lines 26 respectively. The connection point of the pressure gauges is located at the connection between the hydraulic output line 44 and the hydraulic return line 45. Specifically, the pressure gauges are divided into a high-pressure gauge 8, a medium-pressure gauge 9, and a low-pressure gauge 10. These gauges are used to display the pressure value input to the brake assembly in real time during testing. Each high-pressure gauge 8, medium-pressure gauge 9, and low-pressure gauge 10 is provided with a metering port 11 connected to the pressure gauge. The metering port 11 allows for in-situ metering of each pressure gauge, saving the cumbersome work of removing and sending the gauges for metering when their metering period expires. Furthermore, each high-pressure gauge 8, medium-pressure gauge 9, and low-pressure gauge 10 is equipped with a control valve 12 and an overpressure protector 50 on its connecting line. Under normal circumstances, the control valve 12 of the medium-pressure gauge 9 and low-pressure gauge 10 is closed; it can be opened by rotating the operating handle of the control valve 12 counterclockwise. The operating handles of the high-pressure gauge 8, medium-pressure gauge 9, low-pressure gauge 10, metering port 11, and control valve 12 are all exposed on the control panel 17.

[0041] In this embodiment, a conventional relief valve 46 is provided between the hydraulic output line 44 and the hydraulic return line 45, and a conventional back pressure valve 47, a corresponding high-pressure ball valve 48, and a stainless steel needle valve 49 are also provided on the hydraulic line.

[0042] This embodiment also includes a circuit box 18, which is installed on the upper part of the test bench housing 1 near the center, with its front exposed in front of the control panel 17. The circuit box 18 is connected to the plunger pump 25, oil temperature sensor 33, oil level sensor 34, etc., by wires. Corresponding indicator lights, alarm lights, and operation buttons are provided on the front of the circuit box 18. Figure 7 As shown, this embodiment specifically includes a power indicator light 43, an output oil filter alarm light 42, a return oil filter alarm light 41, a low oil level alarm light 40, a plunger pump start button 39, a plunger pump stop button 38, a hydraulic oil over-temperature alarm light 37, and an emergency stop button 36.

[0043] In this embodiment, a conventional low-pressure regulating handle 15 and a high-pressure regulating handle 16 are provided in front of the control panel 17 for adjusting the pressure. The low-pressure regulating handle 15 controls the output of low pressure from 0 to 100 PSI, and the high-pressure regulating handle 16 controls the output of pressure above 500 PSI.

[0044] In this embodiment, a platform drain port 19 is provided below the tool placement platform 5. The platform drain port 19 is used to discharge overflowing hydraulic oil.

[0045] The dual-system hydraulic test bench of this embodiment can perform multiple different tests on the brake assembly. Before testing, it is connected to the brake assembly through the corresponding test connector 2. The following describes one of the test procedures: Start the dual-system hydraulic test bench and start the corresponding plunger pump 25. At this time, the hydraulic shut-off valve 13 is open and the pressure relief valve 14 is closed. The plunger pump 25 draws hydraulic oil from the hydraulic oil tank 21 and outputs it to the hydraulic manifold 28. The hydraulic oil input to the hydraulic manifold 28 is output to the brake assembly through the hydraulic hose 3, and the pressure is continuously increased to 200 psi. Then, the hydraulic shut-off valve 13 is closed, and the pressure is maintained for the set time to complete the test. After the test is completed, the pressure relief valve 14 is opened to release the pressure.

[0046] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A dual system hydraulic test stand for aircraft brake assembly testing, characterized by: The test bench includes a test bench housing, a hydraulic oil tank, two hydraulic lines, and two hydraulic manifolds. The hydraulic oil tank and the two hydraulic lines are all located within the test bench housing. The two hydraulic manifolds are located on opposite sides of the test bench housing and are connected to the two hydraulic lines. Each of the two hydraulic lines is equipped with a plunger pump. The two hydraulic lines are interconnected via a connecting pipe. A pressure connecting valve is provided on the connecting pipe. When the pressure connecting valve is opened, one of the plunger pumps can simultaneously supply hydraulic pressure to both hydraulic lines. Each hydraulic manifold can be connected to one or more hydraulic hoses, and different types of test connectors for connecting to brake components can be connected to the outer ends of different hydraulic hoses.

2. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 1 wherein: The hydraulic manifold is provided with a hydraulic inlet and outlet. The hydraulic pipeline includes a hydraulic output pipeline and a hydraulic return pipeline. The input end and output end of the hydraulic output pipeline are respectively connected to the hydraulic oil output end of the hydraulic oil tank and the hydraulic inlet and outlet of the hydraulic manifold. The plunger pump is located at the input end of the hydraulic output pipeline. A hydraulic shut-off valve is provided on the hydraulic output pipeline near the output end. The input end and output end of the hydraulic return pipeline are respectively connected to the hydraulic inlet and outlet of the hydraulic manifold and the hydraulic oil return end of the hydraulic oil tank. A pressure relief valve is provided on the hydraulic return pipeline near the input end.

3. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 2 wherein: An output oil filter is provided on the hydraulic output line near the output end of the plunger pump, and a return oil filter is provided at the output end of the hydraulic return line.

4. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 1 wherein: The hydraulic manifold has one or more interfaces for connecting the hydraulic hose.

5. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 1 wherein: Pressure gauges are installed on each of the two hydraulic pipelines.

6. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 5 wherein: Each pressure gauge is provided with a metering port that is connected to the pressure gauge.

7. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 2 wherein: An overflow valve is provided between the hydraulic output line and the hydraulic return line.

8. The dual-system hydraulic test bench for testing aircraft brake components according to claim 1, characterized in that: The test bench housing has a working platform on the front and a tool placement platform on the side.

9. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 1 wherein: The test bench housing is provided with hose hooks on the side for suspending hydraulic hoses.

10. The dual system hydraulic test stand for testing of aircraft brake assembly as claimed in claim 1 wherein: The hydraulic oil tank is equipped with an oil temperature sensor and an oil level sensor.

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