CN210479067U - Portable equipment for high-voltage test of steering actuator cylinder of front airplane wheel of airplane - Google Patents
Portable equipment for high-voltage test of steering actuator cylinder of front airplane wheel of airplane Download PDFInfo
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- CN210479067U CN210479067U CN201920640347.0U CN201920640347U CN210479067U CN 210479067 U CN210479067 U CN 210479067U CN 201920640347 U CN201920640347 U CN 201920640347U CN 210479067 U CN210479067 U CN 210479067U
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Abstract
The utility model discloses a portable equipment that is used for wheel to turn to pressurized strut high pressure test before aircraft, including a movable platform, the last portable equipment that is provided with of movable platform: the oil tank comprises a main oil tank and a main oil supply pipe communicated with the interior of the main oil tank; the manual booster pump is arranged on the main oil supply pipe, the main oil supply pipe is communicated with a left oil supply hose and a right oil supply hose respectively at the tail ends through a three-way valve, the left oil supply hose is connected with a left oil return pipe, the right oil supply hose is connected with a right oil return pipe, and the main oil supply pipe is further connected with a pneumatic booster pipe. The utility model discloses can integrate on a movable platform, conveniently turn to the high-pressure test of pressurized strut, convenient operation has improved efficiency of software testing.
Description
Technical Field
The utility model relates to a portable equipment that is used for aircraft front wheel to turn to pressurized strut high pressure test.
Background
As shown in fig. 1 and 2, the steering mechanism for the front wheel of an airplane is provided, and the inner cylinder of the steering column 300 and the steering cylinder 100 form a high pair through the meshing of the gear and the rack 200. When the steering is performed, the steering cylinders on the two sides drive the rack 200 to move left and right through hydraulic pressure, and further drive the inner cylinder of the steering column 300 to rotate. Because the steering mode of the wheel is accurately controlled and has high reliability, most civil aircrafts adopt the steering mechanism at present. However, this steering mechanism is required to have strict sealing performance of the steering cylinder 100, and it is necessary to perform a sealing performance test verification at a high pressure of 25 MPa.
In the existing pressure test method of the steering actuator cylinder, a landing gear with a steering mechanism is fixed near an integrated test bench recommended by an aircraft manufacturer for testing. The test bench is a valuable device, has high maintenance cost and is used at a fixed point. The weight of the landing gear of the passenger plane is very large, the weight of some landing gears is over 2 tons, the landing gear is very inconvenient to move, and parts can be damaged due to impact load on the parts in the moving process, so that the test work difficulty of the steering actuating cylinder is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a high-pressure test that is used for the aircraft front wheel to turn to pressurized strut high-pressure test is conveniently turned to portable equipment is just provided.
To solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a portable equipment that is used for aircraft front wheel to turn to pressurized strut high pressure test, characterized by includes a movable platform, be provided with on the movable platform:
the main oil tank and a main oil supply pipe with the starting end connected into the main oil tank; wherein the content of the first and second substances,
the main oil supply pipe is provided with a hand-operated booster pump, and the tail ends of the hand-operated booster pump are respectively communicated with a left oil supply hose and a right oil supply hose through a three-way valve; the left oil supply hose is connected with a left oil return pipe, and returns oil to the main oil tank through a left oil return valve;
hand booster pump with between the three-way valve still connect a pneumatic booster pipe on the main oil feed pipe, the pneumatic booster pipe other end insert the main oil tank, be equipped with the pneumatic pump on the pneumatic booster pipe, be provided with pneumatic ooff valve and air inlet pressure regulating valve on the air supply pipe of pneumatic pump.
As the preferred design of the utility model:
the maximum output pressure of the hand-operated booster pump is 60MPa, and the maximum output pressure of the pneumatic pump is 30 MPa.
The pneumatic booster pump with between the hand booster pump still connect overflow pipe and pressure release pipe on the main fuel feed pipe, the overflow pipe with the other end of pressure release pipe all inserts main oil tank, be equipped with the overflow valve on the overflow pipe, be equipped with the pressure release ooff valve on the pressure release pipe.
The maximum regulating pressure of the overflow valve is 45 MPa.
The pneumatic booster pipe and the main oil supply pipe between the three-way valves are also connected with a test pipe, and the test pipe is provided with a metering switch valve and a metering pressure gauge.
The measuring range of the measuring pressure gauge is 0-60 MPa.
The movable platform is also provided with a waste oil tank, the left oil return pipe is also connected with a left waste oil discharge pipe with the tail end connected into the waste oil tank, and the left waste oil discharge pipe is provided with a left waste oil discharge valve; the right oil return pipe is also connected with a right waste oil discharge pipe with the tail end connected into the waste oil tank, and the right waste oil discharge pipe is provided with a right waste oil discharge valve.
An oil filter is further arranged on the main oil supply pipe between the pneumatic pressurizing pipe and the testing pipe, the filtering precision of the oil filter is higher than 3 microns, and the hydraulic testing medium can reach the cleaning standard of NAS1638 CLASS 7.
In order to prevent oil from flowing back, the main oil supply pipe and the pneumatic booster pipe are respectively provided with a check valve.
The utility model discloses a main oil tank, the waste oil tank, hand booster pump, pneumatic pump and each pipeline of intercommunication their can be integrated on a movable platform, movable platform can install the truckle or remove on the guide rail, when turning to the pressurized strut leakproofness test, left side oil supply hose is connected to the left pressurized strut that turns to of steering column section of thick bamboo, right side oil supply hose is connected to the steering column section of thick bamboo on the right side, can switch on right oil supply hose through the three-way valve earlier, carry out the right side and turn to the leakproofness test of pressurized strut, the test is accomplished the back, can switch on left oil supply hose through the three-way valve, carry out the leakproofness test that the left side turned to the pressurized strut.
The utility model discloses still have following preferred design:
the main oil tank and the waste oil tank are communicated with respective oil gauges.
The main oil supply pipe, the left oil supply hose, the right oil supply hose, the pneumatic booster pipe, the test pipe, the overflow pipe, the pressure relief pipe and other pipelines and valves all need to meet the pressure grade requirement.
The utility model has the advantages of it is following:
1. the utility model discloses a main fuel tank, waste oil tank, hand increase pump, pneumatic pump and each pipeline all integrate on a movable platform, arrange this movable platform in have the undercarriage next door that turns to the pressurized strut, alright turn to the high-pressure leakproofness test of pressurized strut, it is more convenient to test.
2. The utility model discloses a set up three-way valve and each ooff valve, when turning to the pressurized leakproofness of pressurized actuating cylinder test, can realize the fast switch-over of fuel feeding, oil return in the left and right steering actuating cylinder test circuit, the connection process of pipeline when reducing the left and right steering test of connection steering mechanism has improved efficiency of software testing.
3. The utility model discloses still set up pneumatic booster pipe, can reduce the pressure drop of the discontinuous production of hand booster pump pressure output, reach the purpose of steady voltage, in addition, turning to the in-process of pressurized strut test, if the discovery has the seepage, still can last pressure boost to a steady pressure value through pneumatic booster pipe, realize turning to the test of pressurized strut seepage degree.
Drawings
The invention will be described in further detail with reference to the following drawings and specific embodiments:
fig. 1 is a perspective view of an aircraft front wheel steering mechanism to which the present invention is applicable;
FIG. 2 is a cross-sectional view taken at A of FIG. 1;
fig. 3 is a schematic diagram of the portable device for high-pressure testing of the steering ram of the front wheel of the airplane of the present invention.
Detailed Description
As shown in fig. 3, the portable device for testing the high pressure of the airplane front wheel steering actuator cylinder of the present invention comprises a main oil tank 13, a waste oil tank 19 and a main oil supply pipe 17 with the beginning connected to the main oil tank 13, the main oil supply pipe 17 is provided with a hand booster pump 26, the maximum output pressure of the hand booster pump 26 is 60MPa, the main oil supply pipe 17 is respectively communicated with a left oil supply hose 1 and a right oil supply hose 2 at the end through a three-way valve 34, the left oil supply hose 1 is connected with a left oil return pipe 30, the left oil return pipe 30 returns oil to the main oil tank 13 through a left oil return valve 18, the left oil return pipe 30 is further connected with a left waste oil discharge pipe 25 provided with a left waste oil discharge valve 24, the end of the left waste oil discharge pipe 25 is connected to the waste oil tank 19, so that the left oil return pipe 30 can return oil to the waste oil tank 19, the right oil supply hose 2 is connected with a right oil return pipe 3, the right oil return pipe 3, the right oil return pipe 3 is also connected with a right waste oil discharge pipe 9 provided with a right waste oil discharge valve 23, and the tail end of the right waste oil discharge pipe 9 is connected into a waste oil tank 19, so that the right oil return pipe 3 can return oil to the waste oil tank 19;
the main oil supply pipe 17 is also connected with a pneumatic booster pipe 4 for stabilizing pressure, the pneumatic booster pipe 4 is positioned between the hand-operated booster pump 26 and the three-way valve 34, the other end of the pneumatic booster pipe 4 is connected with the main oil tank 13, the pneumatic booster pipe 4 is provided with a pneumatic pump 5, the maximum output pressure of the pneumatic pump 5 is 30MPa, and an air supply pipe 6 of the pneumatic pump 5 is provided with a pneumatic switch valve 7 and an air inlet pressure regulating valve 8;
an overflow pipe 16 and a pressure relief pipe 15 are further connected to a main oil supply pipe 17 between the pneumatic booster pipe 4 and the hand-operated booster pump 26, the other ends of the overflow pipe 16 and the pressure relief pipe 15 are both connected to the main oil tank 13, an overflow valve 27 is arranged on the overflow pipe 16, the maximum adjusting pressure of the overflow valve 27 is 45MPa, and a pressure relief switch valve 28 is arranged on the pressure relief pipe 15;
a test pipe 31 is further connected to the main oil supply pipe 17 between the pneumatic booster pipe 4 and the three-way valve 34, a metering switch valve 33 and a metering pressure gauge 32 are arranged on the test pipe 31, and the measuring range of the metering pressure gauge 32 is 0-60 MPa and is used for testing the internal pressure of the main oil supply pipe 17;
the main oil supply pipe 17 and the pneumatic booster pipe 4 are respectively provided with a respective one-way valve for preventing oil from flowing back, wherein the main oil supply pipe 17 is provided with three one-way valves which are respectively positioned between an oil inlet of the main oil supply pipe 17 and the hand-operated booster pump 26, between the hand-operated booster pump 26 and the overflow pipe 16, and between the pneumatic booster pipe 4 and the test pipe 31, and the pneumatic booster pipe 4 is provided with two one-way valves which are respectively positioned at two sides of the pneumatic pump 5.
For making the utility model discloses a test equipment can remove near the steering mechanism that awaits measuring, and main oil tank 13, waste oil tank 19, hand booster pump 26, pneumatic pump 5 and communicate their each pipeline integration on a movable platform, and movable platform can ann foot truckle, perhaps installs on the guide rail.
As a preferred embodiment of the present invention:
to facilitate the monitoring of the fuel quantity, the main tank 13 is connected to a first fuel gauge 11 and the waste tank 19 is connected to a second fuel gauge 22.
The bottom of the main oil tank 13 is also communicated with an oil discharge pipe 14, the oil discharge pipe 14 is provided with a main oil tank oil discharge valve 12, the bottom of the waste oil tank 19 is communicated with a waste oil discharge pipe 20, and the waste oil discharge pipe 20 is provided with a waste oil tank oil discharge valve 21.
An oil filter 29 is further arranged on the main oil supply pipe 17 between the pneumatic pressurizing pipe 4 and the testing pipe 31, the filtering precision of the oil filter 29 is higher than 3 mu m, and the hydraulic testing medium can reach the cleaning standard of NAS1638 CLASS 7.
The main oil supply pipe 17, the left oil supply hose 1, the right oil supply hose 2, the pneumatic booster pipe 4, the test pipe 31, the overflow pipe 16, the pressure relief pipe 15 and other pipelines and valves all need to meet the required pressure grade requirement.
The connecting parts in the pipelines of the invention are made of sealing materials of ethylene propylene rubber which is resistant to phosphate ester hydraulic oil, and are used for ensuring the sealing performance of each hydraulic element.
The testing steps are as follows:
1. the equipment and the steering mechanism to be tested are in place, the equipment is checked, and the states of the switch valves are confirmed;
2. when a pneumatic switch valve 7 in an air supply pipe 6 of the pneumatic pump 5 is closed, the air supply pipe 6 is communicated with an external air source;
3. the left oil supply hose and the right oil supply hose are respectively connected to the hydraulic oil inlets of the steering actuating cylinders corresponding to the two sides of the steering column cylinder;
4. testing the right steering actuator cylinder, closing the pressure relief switch valve 28, the right oil return valve 10 and the right waste oil discharge valve 23, opening the left oil return valve 18 and the metering switch valve 33, and communicating the main oil supply pipe 17 and the right oil supply hose 2 by the three-way valve 34;
5. the pressure is increased to 5MPa by using a hand-operated booster pump 26, and the left oil return valve 18 is closed when the inner cylinder of the steering column barrel 300 rotates by 75 degrees for testing;
6. and (3) opening the pneumatic switch valve 7, continuously pressurizing to 25MPa through the hand-operated booster pump 26, closing the pneumatic switch valve 7, opening the pressure relief switch valve 28, keeping for 3 minutes, observing whether the pressure drop of the metering pressure gauge 32 exceeds a specified value, and finishing the leakage test.
7. Opening a right oil return valve 10 to release residual pressure, and if hydraulic oil in a loop needs to be discharged to a waste oil tank 19, opening a right waste oil discharge valve 23;
8. testing the left steering actuator cylinder, closing the pressure relief switch valve 28, the left oil return valve 18 and the left waste oil discharge valve 24, opening the right oil return valve 10, and communicating the main oil supply pipe 17 and the left oil supply hose 1 by the three-way valve 34;
9. the pressure is increased to 5MPa by using a hand-operated booster pump 26, and the right oil return valve 10 is closed when the inner cylinder of the steering column barrel 300 rotates by 75 degrees for testing;
10. and (3) opening the pneumatic switch valve 7, continuously pressurizing to 25MPa through the hand-operated booster pump 26, closing the pneumatic switch valve 7, opening the pressure relief switch valve 28, keeping for 3 minutes, observing whether the pressure drop of the metering pressure gauge 32 exceeds a specified value, and finishing the leakage test.
11. The left oil return valve 18 is opened to release the residual pressure, and if the hydraulic oil in the loop needs to be discharged to the waste oil tank 19, the left waste oil discharge valve 24 is opened.
12. And after the test is finished, the left oil supply hose 1 and the right oil supply hose 2 are disassembled, and the exposed joints are respectively plugged with the plugging covers.
If leakage occurs in the right or left steering actuator cylinder in step 6 or 10, after step 6 or 10, the pressure relief switch valve 28 may be closed, and the right oil supply hose 2 or the left oil supply hose 1 may be continuously pressurized through the pneumatic booster 4, so that the output pressure of the pneumatic booster 4 is maintained at 25MPa, and the leakage degree of the steering actuator cylinder is observed and tested.
The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.
Claims (9)
1. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft, comprising a movable platform on which are disposed:
the main oil tank and a main oil supply pipe with the starting end connected into the main oil tank; wherein the content of the first and second substances,
the main oil supply pipe is provided with a hand-operated booster pump, and the tail ends of the hand-operated booster pump are respectively communicated with a left oil supply hose and a right oil supply hose through a three-way valve; the left oil supply hose is connected with a left oil return pipe, and returns oil to the main oil tank through a left oil return valve;
hand booster pump with between the three-way valve still connect a pneumatic booster pipe on the main oil feed pipe, the pneumatic booster pipe other end insert the main oil tank, be equipped with the pneumatic pump on the pneumatic booster pipe, be provided with pneumatic ooff valve and air inlet pressure regulating valve on the air supply pipe of pneumatic pump.
2. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in claim 1, wherein: the maximum output pressure of the hand-operated booster pump is 60MPa, and the maximum output pressure of the pneumatic pump is 30 MPa.
3. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in claim 1, wherein: the pneumatic booster pump with between the hand booster pump still connect overflow pipe and pressure release pipe on the main fuel feed pipe, the overflow pipe with the other end of pressure release pipe all inserts main oil tank, be equipped with the overflow valve on the overflow pipe, be equipped with the pressure release ooff valve on the pressure release pipe.
4. A portable apparatus for high pressure testing of an aircraft front wheel steering ram as claimed in claim 3 wherein: the maximum regulating pressure of the overflow valve is 45 MPa.
5. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in claim 1, wherein: the pneumatic booster pipe and the main oil supply pipe between the three-way valves are also connected with a test pipe, and the test pipe is provided with a metering switch valve and a metering pressure gauge.
6. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in claim 5, wherein: the measuring range of the measuring pressure gauge is 0-60 MPa.
7. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in claim 1, wherein: the movable platform is also provided with a waste oil tank, the left oil return pipe is also connected with a left waste oil discharge pipe with the tail end connected into the waste oil tank, and the left waste oil discharge pipe is provided with a left waste oil discharge valve;
the right oil return pipe is also connected with a right waste oil discharge pipe with the tail end connected into the waste oil tank, and the right waste oil discharge pipe is provided with a right waste oil discharge valve.
8. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in claim 5, wherein: an oil filter is further arranged on the main oil supply pipe between the pneumatic pressurizing pipe and the testing pipe, and the filtering precision of the oil filter is higher than 3 mu m.
9. A portable apparatus for high pressure testing of a front wheel steering ram of an aircraft as claimed in any one of claims 1 to 8, wherein the main oil supply and the pneumatic booster are provided with respective one-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640347.0U CN210479067U (en) | 2019-05-05 | 2019-05-05 | Portable equipment for high-voltage test of steering actuator cylinder of front airplane wheel of airplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640347.0U CN210479067U (en) | 2019-05-05 | 2019-05-05 | Portable equipment for high-voltage test of steering actuator cylinder of front airplane wheel of airplane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210479067U true CN210479067U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920640347.0U Active CN210479067U (en) | 2019-05-05 | 2019-05-05 | Portable equipment for high-voltage test of steering actuator cylinder of front airplane wheel of airplane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210479067U (en) |
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2019
- 2019-05-05 CN CN201920640347.0U patent/CN210479067U/en active Active
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