Portable hydraulic pressure supply test bed

Abstract

An inner cavity of a box body of the portable hydraulic pressure supply test bed is divided into a left cavity body and a right cavity body through a vertical plate, the left cavity body is divided into an upper cavity body and a lower cavity body through a transverse plate, an oil tank is arranged in the lower cavity body, and an oil pump, a reversing valve, a one-way valve and a manual pressure regulating valve are arranged in the upper cavity body. The lower end of the oil pump extends into the oil tank, a control panel and a tank door are arranged on the upper portion and the lower portion of the front end face of the tank body respectively, a drawing type oil receiving disc is arranged on the lower portion of the lower cavity, and a fixing plate is arranged on the portion, above the oil receiving disc, of the tank body. An oil outlet connector, an oil return port connector and an overflow port connector are arranged on the fixing plate at intervals, and idler wheels are arranged at the lower end of the box body. According to the utility model, the traditional equipment is improved, the size is greatly reduced, the weight is reduced, a pipeline system is simplified, and the sealing performance and pressure test can be directly carried out on various small and medium-sized accessories in various airplane hydraulic systems through the hydraulic pressure gauge in the control panel.

Description

Technical Field

[0001] The utility model relates to an accessory sealing test technology in an aircraft hydraulic system, in particular to a portable hydraulic pressure supply test bench. Background Art

[0002] During aircraft maintenance or teaching, it is necessary to perform sealing and pressure tests on various small and medium-sized accessories in the hydraulic systems of various aircraft. Sealing and pressure tests are performed on hydraulic integrated test benches, which currently have the following shortcomings:

[0003] (1) Due to the problems of large size, heavy weight, oil leakage and pollution of traditional hydraulic comprehensive test benches, manpower and material resources are wasted during field maintenance. Moreover, it is difficult to move it, making it impossible to carry out on-site inspection of hydraulic system accessories.

[0004] (2) In the application of traditional hydraulic comprehensive test benches in teaching, whether it is the instructor's operation demonstration or the students' practical operation, it is often "one person does it and many people watch", and the internship efficiency is relatively low.

[0005] (3) When teaching units participate in teaching competitions at other locations, the traditional hydraulic comprehensive test bench cannot be transported to the competition site, which has a great impact on the selection of competition subjects and content, and often cannot fully demonstrate the essence and characteristics of the participating courses. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a portable hydraulic pressure supply test bench with reasonable design, good oil leakage and pollution prevention effect and easy mobility.

[0007] The technical solution of the utility model is:

[0008] A portable hydraulic pressure supply test bench comprises a box body, the inner cavity of the box body is divided into two left and right cavities by a vertical plate, wherein the left cavity is divided into two upper and lower cavities by a horizontal plate, wherein an oil tank is arranged in the lower cavity, and an oil pump, a reversing valve, a one-way valve and a manual pressure-regulating valve are arranged in the upper cavity, the lower end of the oil pump extends into the oil tank, a control panel is arranged on the upper front end surface of the box body, a control switch is arranged on the control panel, a box door is arranged on the lower front end surface of the box body, a pull-out oil receiving pan is arranged at the lower part of the lower cavity, a fixed plate is arranged on the box body above the oil receiving pan, an oil outlet joint, an oil return port joint and an overflow port joint are arranged at intervals on the fixed plate, and a roller is arranged at the lower end of the box body.

[0009] Furthermore: the reversing valve includes a two-position four-way reversing valve and two two-position three-way reversing valves, the oil pump is connected to the inlet of the two-position four-way reversing valve through the one-way valve and the manual regulating valve in sequence, and one outlet of the two-position three-way reversing valve is connected to the oil outlet joint through the two-position three-way reversing valve and the electromagnetic one-way valve in sequence to form an oil outlet pipeline; the other outlet of the two-position three-way reversing valve is connected to the oil return port joint through the two-position three-way reversing valve and the electromagnetic one-way valve in sequence to form an oil return pipeline.

[0010] Furthermore: an oil outlet pressure gauge and an oil outlet flow meter are respectively provided on the oil outlet circuit, and a return oil pressure gauge and a return oil flow meter are respectively provided on the oil return pipeline. The oil outlet pressure gauge, oil outlet flow meter, return oil pressure gauge and return oil flow meter are respectively provided on the control panel.

[0011] Furthermore: there are four rollers, which are respectively located at the four corners of the lower end surface of the box body, and at least two of the rollers are provided with a brake mechanism.

[0012] Furthermore: a lifting ring is provided at the upper end of the box body for easy lifting, and push handles are provided at the left and right ends of the box body for easy pushing and pulling.

[0013] The beneficial effects of the utility model are:

[0014] 1. This utility model improves traditional equipment, significantly reduces the volume, reduces the weight, simplifies the piping system, and can directly perform sealing and pressure tests on various small and medium-sized accessories in the hydraulic systems of various aircraft through the hydraulic gauge in the control panel.

[0015] 2. The utility model is provided with a pull-out oil collecting pan at the bottom of the box, which can collect the oil when it leaks, thus preventing the oil from contaminating the test bench or the floor.

[0016] 3. The utility model provides a partition cavity on one side of the inner cavity of the box body, which can be used to place the connecting oil pipes, so that the oil pipes can be stored neatly and uniformly and are easy to take out and put in.

[0017] 4. The lower end of the box of the utility model is equipped with rollers for easy walking. At the same time, the rollers are provided with a brake mechanism for positioning and easy use.

[0018] 5. The utility model has reasonable design, good anti-oil leakage pollution effect, is easy to move, easy to promote and implement, and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a portable hydraulic pressure supply test bench;

[0020] Figure 2 for Figure 1 A right side view of a portable hydraulic pressure supply test bench is shown;

[0021] Figure 3 for Figure 1 The structure diagram of a portable hydraulic pressure supply test bench without the box door is shown;

[0022] Figure 4 for Figure 1 The hydraulic principle diagram of a portable hydraulic pressure supply test bench is shown;

[0023] Figure 5 for Figure 1 The figure shows the oil circuit control diagram of a portable hydraulic pressure supply test bench. DETAILED DESCRIPTION

[0024] Example: See Figure 1 -- Figure 5 In the figure, 1- roller, 2- box body, 3- box door, 4- handle, 5- manual pressure release button, 6- pressure adjustment knob, 7- pressure setting knob, 8- oil outlet pressure gauge, 9- oil return pressure gauge, 10- power indicator light, 11- oil pump on button, 12- oil outlet flow meter, 13- oil pump off button, 14- oil return flow meter, 15- oil supply switch button, 16- oil return switch button, 17- control panel, 18- fixed plate, 19- vertical plate, 20- overflow port connector, 21- oil return port connector, 22- oil outlet connector, 23- oil receiving tray, 24- oil tank, 25- horizontal plate, 26- four-way valve, 27- oil pump.

[0025] A portable hydraulic pressure test bench includes a box 2, wherein the inner cavity of the box 2 is divided into two cavities on the left and right by a vertical plate 18, and the left cavity is divided into two cavities on the upper and lower sides by a horizontal plate 25. The lower cavity is provided with an oil tank 24, and the upper cavity is provided with an oil pump 27, a reversing valve, a one-way valve and a manual pressure regulating valve. The lower end of the oil pump 27 extends into the oil tank 24. The upper front end of the box 2 is provided with a control panel 17, on which various control switches are provided. The lower front end of the box 2 is provided with The box door 3 is provided with a handle 4, which also serves as a lock and can open and close the box door. The lower end of the box door 3 is rotatably connected to the box body 2, or is plug-in connected. The lower part of the lower cavity is provided with a pull-out oil receiving pan 23 (the two ends of the oil receiving pan 23 are connected to the box body 2 through a guide rail pair to facilitate guided pulling). A fixed plate 18 is provided on the box body 3 above the oil receiving pan 23. The fixed plate 18 is provided with an oil outlet joint 22, an oil return port joint 21 and an overflow port joint 20 at intervals. The lower end of the box body 2 is provided with a roller 1.

[0026] Optimal solution: The reversing valve includes a two-position four-way reversing valve and two two-position three-way reversing valves. The oil pump 27 is connected to the inlet of the two-position four-way reversing valve through a one-way valve and a manual regulating valve in sequence. One outlet of the two-position three-way reversing valve is connected to the oil outlet connector 22 through a two-position three-way reversing valve and an electromagnetic one-way valve in sequence to form an oil outlet pipeline; the other outlet of the two-position three-way reversing valve is connected to the oil return port connector 21 through a two-position three-way reversing valve and an electromagnetic one-way valve in sequence to form an oil return pipeline.

[0027] Preferred solution: An oil outlet pressure gauge 8 and an oil outlet flow meter 12 are respectively provided on the oil outlet circuit, and an oil return pressure gauge 9 and an oil return flow meter 14 are respectively provided on the oil return pipeline. The oil outlet pressure gauge 8, the oil outlet flow meter 12, the return oil pressure gauge 9 and the return oil flow meter 14 are respectively provided on the control panel 17. In addition, the control panel is also provided with a power indicator light 10, an oil pump on button 11, an oil pump off button 13, an oil supply switch button 15, an oil return switch button 16, a manual pressure release button 5, a pressure adjustment knob 6 and a pressure setting knob 7.

[0028] Preferred solution: There are four rollers 1, located at the four corners of the lower end surface of the box 2, and at least two rollers 1 are equipped with brake mechanisms. The upper end of the box 2 is provided with a lifting ring for easy lifting, and the left and right ends of the box 2 are provided with push handles for easy pushing and pulling (not shown in the figure).

[0029] Technical indicators:

[0030] Serial number Part Name Technical indicators 1 oil pump Plunger pump CY14-1B, rated pressure 31.5 MPa, rated flow rate: 1.25 ml / rev, rated speed 1450 rpm 2 motor Single-phase 220V, 50Hz, power 1.5 kW, rated speed 1450 rpm 3 Flow meter Pressure resistance 45 MPa, anti-corrosion and anti-fouling, measuring range: 5-250L / H, working temperature -15℃-80℃, error ±0.5% 4 Hydraulic gauge Measuring range 0-60 MPa, earthquake-resistant 5 Hydraulic components 1. Two-position, four-way solenoid directional control valve: Control voltage 24V, diameter 6cm, pressure resistance 35MPa, flow rate 80L / mm2, model 4WE6G61B / CG24N9Z5L. 2. Two-position, three-way solenoid directional control valve: Control voltage 24V, Normal state A open, B closed, model 4WE6D61B / CG24N9Z5L. 3. Pressure regulating valve: Pressure resistance 40MPa. 4. Pressure relay: Control voltage 24V, model JCS-02H, pressure setting range: 50--410kg / cm². 5. Solenoid stop valve: Control voltage 24V, model V2068, when de-energized, P to T closed.

[0031] Working process:

[0032] (1) Turn on the power supply and the power indicator light will light up. Press the oil pump switch and the oil pump will start working. Press the oil supply or oil return button and do not release it. Observe the oil supply or oil return pressure gauge and adjust the pressure setting handle to set the required pressure. The pressure setting value should be lower than the oil pump adjustment pressure. After adjusting the pressure to the required pressure, release the oil supply or oil return button. The manual pressure release button should be used frequently during the pressure setting process. When adjusting the pressure setting, the pressure will be maintained. At this time, release the oil supply or oil return button and press the manual pressure release button. Then adjust the pressure setting value until the pressure is set to the required pressure.

[0033] (2) After the setting is completed, a pressure test can be performed. For example, when testing the actuator: the tail oil inlet is connected to the oil outlet, and the head oil inlet is connected to the oil supply port. When the oil supply button is pressed, the actuator extends, and when the oil return button is pressed, the actuator retracts. The overflow port connector 20 is used when the test equipment has an overflow interface, and the overflow oil can be recovered into the oil tank 24.

[0034] During testing, the box door 3 is opened and the oil receiving pan 23 is pulled out to catch the oil leaking from the joint. In addition, an extended oil pipe can be placed in the right cavity to connect the joint and the component to be tested.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification based on the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A portable hydraulic pressure test bench, comprising a box, characterized by: The inner cavity of the box body is divided into two left and right cavities by a vertical plate, wherein the left cavity is divided into two upper and lower cavities by a horizontal plate, wherein an oil tank is provided in the lower cavity, and an oil pump, a reversing valve, a one-way valve and a manual pressure-regulating valve are provided in the upper cavity, and the lower end of the oil pump extends into the oil tank, and a control panel is provided on the upper front end surface of the box body, and a control switch is provided on the control panel, and a box door is provided on the lower front end surface of the box body, and a pull-out oil receiving pan is provided at the lower part of the lower cavity, and a fixed plate is provided on the box body above the oil receiving pan, and an oil outlet joint, an oil return port joint and an overflow port joint are provided at intervals on the fixed plate, and a roller is provided at the lower end of the box body.

2. The portable hydraulic pressure supply test bench according to claim 1, characterized in that: The reversing valve includes a two-position four-way reversing valve and two two-position three-way reversing valves. The oil pump is connected to the inlet of the two-position four-way reversing valve through the one-way valve and the manual regulating valve in sequence. One outlet of the two-position three-way reversing valve is connected to the oil outlet joint through the two-position three-way reversing valve and the electromagnetic one-way valve in sequence to form an oil outlet pipeline; the other outlet of the two-position three-way reversing valve is connected to the oil return port joint through the two-position three-way reversing valve and the electromagnetic one-way valve in sequence to form an oil return pipeline.

3. The portable hydraulic pressure supply test bench according to claim 2, characterized in that: The oil outlet pipeline is respectively provided with an oil outlet pressure gauge and an oil outlet flow meter, and the oil return pipeline is respectively provided with an oil return pressure gauge and an oil return flow meter. The oil outlet pressure gauge, oil outlet flow meter, return oil pressure gauge and return oil flow meter are respectively provided on the control panel.

4. The portable hydraulic pressure supply test bench according to claim 2, characterized in that: There are four rollers, which are respectively located at the four corners of the lower end surface of the box body, and at least two of the rollers are provided with brake mechanisms.

5. The portable hydraulic pressure supply test bench according to claim 1, characterized in that: The upper end of the box body is provided with a lifting ring for easy lifting, and the left and right ends of the box body are provided with push handles for easy pushing and pulling.

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