Dual-system hydraulic universal adapter

Abstract

The utility model discloses a dual-system hydraulic universal adapter, and belongs to the technical field of hydraulic adapters. Comprising two pressure / flow control units and control units connected with the pressure / flow control units, and a power supply unit, a first pressure / flow control unit and a second pressure / flow control unit are all connected between an external hydraulic source and an unmanned aerial vehicle hydraulic system and used for pressure supply or refueling of the aircraft double-hydraulic system; each unit is carried on the vehicle body structure; the control unit comprises a control panel and a display operation interface; and the power supply unit is used for supplying power to the two groups of pressure / flow control units and the control unit. The adapter provided by the utility model is provided with two pressure / flow control units, so that on-board hydraulic single-system or double-system guarantee work can be carried out under the condition of double-system pressure supply of hydraulic station equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic adapter technical field, concretely relates to a dual system hydraulic general adapter. BACKGROUND

[0002] The dual hydraulic system of large and medium manned aircraft and unmanned aircraft equipment needs to obtain support from the field station hydraulic equipment, and because the hydraulic system parameter indexes of different aircraft types are different, the relationship between pressure and flow is various, and currently, when the large and medium manned aircraft and unmanned aircraft equipment is maintained, manual adjustment of the equipment is needed to output appropriate flow and pressure values, and errors or mistakes are prone to occur during manual adjustment, thereby affecting the maintenance efficiency of the large and medium manned aircraft and unmanned aircraft equipment. SUMMARY

[0003] The technical problem to be solved is:

[0004] In order to avoid the shortcomings of the prior art, the utility model provides a dual system hydraulic general adapter, which is connected in series with an external hydraulic source, and communicates the external hydraulic source and the unmanned aerial vehicle hydraulic system through two groups of pressure / flow control units, replaces the on-board hydraulic pump to supply pressure to the aircraft hydraulic system, realizes ground test, air tightness check, cleaning, and aircraft hydraulic tank refueling of the aircraft hydraulic system. The adapter provides two pressure / flow control units, and in the case of dual system pressure supply of the hydraulic field station equipment, on-board hydraulic single system or dual system support work can be carried out.

[0005] The technical scheme of the utility model is: a dual system hydraulic general adapter, which comprises two groups of pressure / flow control units, a control unit connected with the pressure / flow control units, and a power supply unit, the first pressure / flow control unit and the second pressure / flow control unit are connected between the external hydraulic source and the unmanned aerial vehicle hydraulic system, and are used for supplying pressure or refueling of the aircraft dual hydraulic system; each unit is carried on the vehicle body structure; the control unit comprises a control panel and a display operation interface; the power supply unit is used for supplying power to the two groups of pressure / flow control units and the control unit.

[0006] The further technical scheme of the utility model is: the first pressure / flow control unit comprises a first pressure supply pipeline, a first oil return pipeline, and a refueling pipeline; the oil liquid of the first hydraulic system of the external hydraulic source is input to the first hydraulic system of the aircraft through the first pressure supply pipeline, the oil liquid in the first hydraulic system of the aircraft is sucked back to the first hydraulic system of the external hydraulic source through the first oil return pipeline, and the oil liquid input by the external hydraulic source is input into the aircraft hydraulic tank through the refueling pipeline.

[0007] The further technical scheme of the utility model discloses: the second pressure / flow control unit includes second pressure supply pipeline and second oil return pipeline, through second pressure supply pipeline, the oil liquid of second hydraulic system of external hydraulic source is inputted to the second hydraulic system of airplane, through second oil return pipeline, the oil liquid in the oil tank of second hydraulic system of airplane is sucked back to the second hydraulic system of external hydraulic source.

[0008] The further technical scheme of the utility model discloses: the pressure supply pipeline is connected pressure supply adapter valve, quick coupling, proportional pressure reducing valve, proportional flow valve, buffer valve, pressure transmitter, oil filter, stop valve, pressure supply hose, quick coupling, pressure supply valve in proper order along pipeline, and oil liquid is inputted to pressure supply pipeline from first hydraulic system / second hydraulic system of external hydraulic source through pressure supply adapter valve, and is outputted to the first hydraulic system / second hydraulic system of airplane through pressure supply valve, and safety valve, pressure regulating / pressure relief valve are established on the oil supply pipeline.

[0009] The further technical scheme of the utility model discloses: the oil return pipeline is connected oil suction valve, quick coupling, into adapter oil return hose, check valve, water removal multi-pass module, temperature sensor, quick coupling, oil return adapter valve in proper order along pipeline, and oil liquid is inputted to oil return pipeline from first hydraulic system / second hydraulic system through oil suction valve, and is outputted to oil return adapter valve from oil return pipeline and enters first hydraulic system / second hydraulic system of external hydraulic source, and sampling valve, safety valve are established on the oil return pipeline.

[0010] The further technical scheme of the utility model discloses: the oil supply pipeline is connected pressure supply adapter valve, quick coupling, proportional pressure reducing valve, proportional flow valve, buffer valve, pressure transmitter, oil filter, electromagnetic valve, oil supply hose, quick coupling, oil supply valve / joint in proper order along pipeline, and oil liquid is inputted to oil supply pipeline from external hydraulic source through pressure supply adapter valve, and is outputted to oil supply valve / joint from oil supply pipeline and enters the hydraulic oil tank of airplane through airplane oil filling port, and safety valve, pressure regulating / pressure relief valve are established on the oil supply pipeline, and pressure supply adapter valve, quick coupling, proportional pressure reducing valve, proportional flow valve, buffer valve, pressure transmitter, oil filter share with the pressure supply pipeline of first pressure / flow control unit.

[0011] The further technical scheme of the utility model discloses: pressure / flow control unit still includes oil liquid water removal device, and oil liquid water removal device includes oil filling hose, oil filling oil filter, oil filling stop valve, manual reversing valve, gear pump, motor, check valve, oil supply oil filter, pressure transmitter, temperature transmitter, pressure regulating stop valve, sampling valve, safety valve, oil supply hose, first quick -operation joint, second quick -operation joint, oil return hose, flow regulating valve, air filter coarse, air filter fine, purification tank, differential pressure sensor, absolute pressure sensor, transparent hose, oil water separator, vacuum pump, back pressure valve, connect first quick -operation joint, second quick -operation joint with the water removal multi -channel module of hydraulic general adapter respectively after again, switching reversing valve to circulation position, start motor and vacuum pump, and the oil liquid in hydraulic general adapter passes first quick -operation joint, oil return hose, back pressure valve, and enters the purification tank, and is extracted by gear pump from the purification tank, and is returned to the hydraulic system in hydraulic general adapter hydraulic system through check valve, oil filter, pressure transmitter, temperature transmitter, pressure regulating stop valve, sampling valve, safety valve, oil supply hose, second quick -operation joint, and vacuum pump is started simultaneously, and gas enters the purification tank through flow regulating valve, air filter coarse, air filter fine, and is discharged through oil water separator, vacuum pump again,

[0012] When the purification tank is filled with oil, the oil filling hose is inserted into the oil drum, then the reversing valve is switched to the oil filling position, the oil filling stop valve and the pressure regulating stop valve are opened, the motor is started to drive the oil pump to operate, and the oil liquid enters the purification tank through the oil filling hose, the oil filling oil filter, the oil filling stop valve, the reversing valve, the gear pump, the check valve, the oil filter, the pressure transmitter, the temperature transmitter, and the pressure regulating stop valve. When the oil level in the purification tank reaches the set value, the device automatically stops operating and prompts that the oil filling is completed.

[0013] The control board of the control unit is composed of 8-bit AD analog input channels, 4-bit DA analog output channels, 8-bit DI switch input channels, and 8-bit DO switch output channels.

[0014] The further technical scheme of the utility model discloses: the car body structure includes frame and the wheel of installing at its bottom, and the frame is hollow box body, and two groups of pressure / flow control units, control units and power supply units are installed in the frame, the side wall of the frame is provided with a heat dissipation fin, and a display operation interface is installed on the top surface.

[0015] The further technical scheme of the utility model discloses: the car wheel includes four steering wheels distributed in a rectangular shape, wherein two front wheels have 360 ° steering with brake function, and the other two are rear wheels.

[0016] Beneficial effects

[0017] The utility model discloses beneficial effect lies in: the utility model discloses adapter and external hydraulic source series docking, through two groups of pressure / flow control unit intercommunication external hydraulic source and unmanned aerial vehicle hydraulic system, output satisfies the hydraulic energy of many type aircraft hydraulic system requirement, replaces the hydraulic pump on the machine and supplies pressure to the hydraulic system on the machine, realizes the ground test of hydraulic system on the machine, air tightness inspection, cleaning, hydraulic oil tank refueling, the double pressure / flow control unit in the adapter can work simultaneously or work alone, and do not influence each other.

[0018] The utility model discloses pressure / flow control unit, control unit, power supply unit are integrated on the vehicle body structure, can realize the hydraulic system supply pressure on the machine under the environment of again outside.

[0019] The utility model discloses adapter sets up oil supply / return pipeline, oil filling pipeline respectively, realizes the generalization guarantee of different machine type double hydraulic system. Simple structure, convenient transportation, maintenance and dismounting. ACCURACY OF DRAWINGS

[0020] Figure 1 The utility model discloses double system hydraulic general adapter principle block diagram;

[0021] Figure 2 The utility model discloses double system hydraulic general adapter system composition schematic view;

[0022] Figure 3 The utility model discloses double system hydraulic general adapter vehicle body structure schematic view;

[0023] Figure 4 The utility model discloses double system hydraulic general adapter hydraulic principle diagram;

[0024] Figure 5 The utility model discloses double system hydraulic general adapter pressure supply switching valve schematic view;

[0025] Figure 6 The utility model discloses double system hydraulic general adapter oil return switching valve schematic view;

[0026] Figure 7 The utility model discloses double system hydraulic general adapter machine connection work-single system principle diagram;

[0027] Figure 8 The utility model discloses double system hydraulic general adapter machine connection work-double system principle diagram;

[0028] Figure 9 The utility model discloses double system hydraulic general adapter aircraft hydraulic oil tank refueling work principle diagram;

[0029] Figure 10 The utility model discloses double system hydraulic general adapter and oil liquid water removal device linkage carry out vacuum water removal principle diagram;

[0030] Figure 11 The utility model discloses a dual system hydraulic general adapter electrical principle diagram,

[0031] Figure 12 The utility model discloses a dual system hydraulic general adapter operation main interface diagram.

[0032] Figure mark explanation: 1. quick coupling, 2. pressure supply switching valve, 3. proportional pressure reducing valve, 4. proportional flow regulating valve, 5. pressure transmitter, 6. buffer valve, 7. stop valve, 8. hydraulic oil filter, 9. electromagnetic valve, 10. oil filling hose, 11. pressure supply hose, 12. quick coupling, 13. pressure supply valve, 14. oil return valve, 15. quick coupling, 16. oil return hose, 17. safety valve, 18. check valve, 19. sampling valve, 20. temperature sensor, 21. quick coupling, 22. oil return switching valve, 23. pressure regulating / pressure relief valve hydraulic screw valve, 24. overflow valve, 25. safety valve, 26. quick coupling, 27. oil filling valve / interface, 28. self-circulation interface, 29. water removal multi-pass block, 30. quick coupling, 31. quick coupling, 32. quick coupling, 33. pressure supply switching valve, 34. proportional pressure reducing valve, 35. proportional flow regulating valve, 36. pressure transmitter, 37. buffer valve, 38. stop valve, 39. hydraulic oil filter, 40. pressure supply hose, 41. quick coupling, 42. pressure supply valve, 43. oil return valve, 44. quick coupling, 45. oil return hose, 46. safety valve, 47. check valve, 48. sampling valve, 49. temperature sensor, 50. quick coupling, 51. oil return switching valve, 52. hydraulic screw switch, 53. overflow valve, 54. self-circulation interface, 55. quick coupling, 56. YXF-183 valve, 57. quick coupling, 58. YXF-184 valve, 61. oil filling hose, 62. oil filling filter, 63. oil filling stop valve, 64. hand-operated reversing valve, 65. gear pump, 66. motor, 67. check valve, 68. oil supply filter, 69. pressure transmitter, 70. temperature transmitter, 71. pressure regulating stop valve, 72. sampling valve, 73. safety valve, 74. oil supply hose, 75. first quick coupling, 76. second quick coupling, 77. oil return hose, 78. flow regulating valve, 79. air filter coarse, 80. air filter fine, 81. purification tank, 82. differential pressure sensor, 83. absolute pressure sensor, 84. transparent hose, 85. oil-water separator, 86. vacuum pump, 87. back pressure valve, 91. first system oil supply filter, 92. second system oil supply filter, 93. first system oil supply pressure, 94. second system oil supply pressure, 95. first system oil temperature, 96. second system oil temperature,

[0033] 100. first pressure / flow control unit, 200. second pressure / flow control unit, 300. control unit, 400. vehicle body structure, 500. power supply unit. DETAILED DESCRIPTION

[0034] The embodiments described below are exemplary and are intended to be illustrative of the present application and are not to be understood as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] Based on the current workers in the maintenance of large and medium-sized manned and unmanned devices, manual adjustment of the device is required to output to the appropriate flow and pressure value, and errors or mistakes are prone to occur during manual adjustment, which affects the maintenance efficiency of large and medium-sized manned and unmanned devices. The utility model provides a kind of dual-system hydraulic general adapter, including two groups of pressure / flow control unit and the control unit connected with it, power supply unit, first pressure / flow control unit, second pressure / flow control unit are connected between external hydraulic source and unmanned aerial vehicle hydraulic system, for the pressure supply or refueling of aircraft dual hydraulic system;Each unit is carried on the vehicle body structure;The control unit includes control panel and display operation interface;The power supply unit is used to power two groups of pressure / flow control unit and control unit.

[0037] Specifically, the first pressure / flow control unit includes a first pressure supply pipeline, a first oil return pipeline and a refueling pipeline;The oil in the first hydraulic system of the external hydraulic source is input to the first hydraulic system of the aircraft through the first pressure supply pipeline, the oil in the first hydraulic system of the aircraft is sucked back to the first hydraulic system of the external hydraulic source through the first oil return pipeline, and the oil input by the external hydraulic source enters the aircraft hydraulic oil tank through the refueling pipeline.

[0038] Specifically, the second pressure / flow control unit includes a second pressure supply pipeline and a second oil return pipeline;The oil in the second hydraulic system of the external hydraulic source is input to the second hydraulic system of the aircraft through the second pressure supply pipeline, and the oil in the oil tank of the second hydraulic system of the aircraft is sucked back to the second hydraulic system of the external hydraulic source through the second oil return pipeline.

[0039] The above technical solutions are further described below in combination with the drawings and examples:

[0040] The double-system hydraulic universal adapter of the embodiment is connected with the hydraulic interfaces of the existing station hydraulic equipment, large and medium manned and unmanned equipment, controls the pressure and flow output by the hydraulic equipment, and converts them into corresponding working parameter values of the four-type aircraft hydraulic system. In combination with the corresponding aircraft hydraulic connectors configured, the universal guarantee of the four-type aircraft hydraulic system is realized. The adapter is matched with the AC-B / YLC-1 traction type hydraulic oil pump vehicle four and has been used in the field for many years. The CB-B / YLC-3A traction type hydraulic oil pump vehicle four is also matched and has been used in the field for many years. The mature technology is applied. The machine, electrical and hydraulic integrated technology controlled by the single-chip microcomputer is used. Under the support of the special software, the working mode of the corresponding working parameters is automatically configured. The universalization, miniaturization and intelligentization of the equipment are realized.

[0041] Main technical indicators: working medium: suitable for 15 GJB1177A-2013, YH-10 (SY1181-1976) and other aviation hydraulic oils. Working pressure: 0-22 MPa system I, manually adjustable; 0-22 MPa system II, manually adjustable; preset pressure according to aircraft type: 21.3±0.5 MPa system I, system II; System I, system II. Working flow: 0-50 L / min system I, 0-50 L / min system II. Oil filling pressure: 0-0.5 MPa, manually adjustable. Oil pollution index: the solid particle pollution of the hydraulic system at the factory is not worse than GJB420B-6 level. The adapter is provided with a safety valve on the oil supply and return pipeline to ensure the safety of the aircraft oil supply and return system. The adapter is matched with the pressure supply pipeline, the oil return pipeline and the oil filling pipeline. Each connection interface is provided with an identification label to facilitate the use of the user. The adapter is powered by 220V, 50Hz single-phase alternating current power supply. Weight: not more than 260 kg. Reliability: mean time between failures MTBF≥1000 hours. Maintainability: basic level mean repair time MTTR≯1 hour.

[0042] Referring to Figure 1 As shown in the drawings, after the adapter of the embodiment is connected in series with the external hydraulic source, the output pressure / flow of the external hydraulic source is controlled and adjusted by the control unit, and then the hydraulic energy source meeting the requirements of the four-type aircraft hydraulic system is output, replacing the hydraulic pump on the aircraft to supply pressure to the aircraft hydraulic system, realizing the ground test, air tightness check, cleaning and aircraft hydraulic tank oil filling of the aircraft hydraulic system. The adapter has two pressure / flow control units. In the case of double-system pressure supply of the hydraulic station equipment, the double-system guarantee work of the on-board hydraulic system can be carried out at the same time.

[0043] Referring to Figure 2 and Figure 3As shown, the adapter of the embodiment mainly consists of five parts, i.e. a vehicle body structure, a first pressure / flow control unit, a second pressure / flow control unit, a power supply unit and a control and display unit. The vehicle body structure adopts a four-wheel load-bearing mode, the wheels are made of oil-resistant rubber wheels, the front wheels are 360° steering wheels with brakes, and the trolley chassis is in the form of a push handle with a brake, and one person can conveniently move it. The man-machine engineering design is made in accordance with GJB2873-1997 "Man-machine engineering design guidelines for military equipment and facilities". An electrical control cabinet is arranged at the front of the vehicle body, a control display screen is arranged on the upper part of the electrical control cabinet, the height is designed according to the human operation habit, and the operation and observation are convenient, and operation keys are arranged. The vehicle body display screen is provided with a dustproof cover, the upper cover of the vehicle body is designed with an air spring, and the lower end is provided with a movable door cover which is convenient to open and maintain. An oil supply hose, an oil return hose, a fueling hose and a cable storage bracket are arranged in the vehicle body. A pushing handle is arranged at the front end of the vehicle body. A water blocking line is arranged at the joint part of each door cover of the vehicle body, and a sealing rubber strip is arranged, and the whole vehicle is waterproof treated. Fixed devices for lifting and mooring are arranged at the four corners of the vehicle body chassis. The surface adopts a baking paint process, has the properties of acid, alkali, salt and fog resistance, wear resistance and impact resistance, and silk screen printing is adopted.

[0044] The adapter adopts a box-type concealed mechanical structure, the upper cover of the vehicle body, the dustproof cover of the display screen and each door cover are provided with a water blocking line and a sealing rubber strip, and a protective cover used during non-working period is arranged, so as to enhance the rainproof, moisture-proof, dust-proof and wind-proof ability of the equipment. The surface of the vehicle body adopts an electrostatic plastic spraying and wear-resistant baking paint process, so as to improve the corrosion resistance of the equipment.

[0045] Referring to Figure 4 As shown, the first pressure / flow control unit of the adapter of the embodiment includes a quick connector 1, a pressure supply switching valve 2, a proportional pressure reducing valve 3, a proportional flow valve 4, a pressure transmitter 5, a buffer valve 6, a stop valve 7, an oil filter 8, an electromagnetic valve 9, a fueling hose 10, a pressure supply hose 11, a quick connector 12, a pressure supply valve 13, an oil suction valve 14, a quick connector 15, an adapter oil return hose 16, a safety valve 17, a one-way valve 18, a sampling valve 19, a temperature sensor 20, a quick connector 21, an oil return switching valve 22, a safety valve 23, a pressure regulating / pressure relief valve 24, a safety valve 25, a quick connector 26, a fueling valve / joint 27, a self-circulation interface 28, a water removal multi-channel module 29, a quick connector 30 and a quick connector 31. The second pressure / flow control unit includes a pressure supply switching valve 33, a proportional pressure reducing valve 34, a proportional flow regulating valve 35, a pressure transmitter 36, a buffer valve 37, a stop valve 38, a hydraulic oil filter 39, a pressure supply hose 40, a pressure supply valve 42, an oil return valve 43, a quick connector 44, an oil return hose 45, a safety valve 46, a one-way valve 47, a sampling valve 48, a temperature sensor 49, a quick connector 50, an oil return switching valve 51, a hydraulic screw switch 52, an overflow valve 53 and a self-circulation interface 54.

[0046] Referring toFigure 5 As shown, the pressure supply switching valve 2, 33 is used for the adapter to connect with the external hydraulic source pressure interface, only need to replace the pressure supply switching valve type can be connected with other type external hydraulic source pressure interface.

[0047] Referring to Figure 6 As shown, the oil return switching valve 22, 51 is used for the adapter to connect with the external hydraulic source oil return interface, only need to replace the oil return switching valve type can be connected with other type external hydraulic source oil return interface.

[0048] The proportional pressure reducing valve: for pressure control, output pressure set range 0 ~ 22 MPa, pressure / flow control unit I, II each a piece of work characteristics see table 1.

[0049] Table 1: the working characteristics of proportional pressure reducing valve

[0050] Maximum input pressure 35 MPa Output pressure setting range 0 ~ 22 MPa Maximum flow rate 160 L / min Power source 24V DC ]]> Input signal 0~10V DC <!-- 5 -->]]> Maximum power consumption 30W Weight 5 kg

[0051] The proportional flow valve: for flow control, flow regulation range 1 ~ 160 L / min, pressure / flow control unit I, II each a piece of work characteristics see table 2.

[0052] Table 2: the working characteristics of proportional flow valve

[0053] Maximum working pressure 31.5 MPa Flow rate adjustment range 1 ~ 160 L / min Power source 24V DC ]]> Input signal 0~10V DC ]] Maximum power consumption 40W Weight 8.5 kg

[0054] The pressure transmitter: for system pressure monitoring, measurement range 0 ~ 25 MPa, power supply DC 24 V, output 0 ~ 5 V, accuracy 0.5% FS, pressure / flow control unit I, II each a piece.

[0055] The hydraulic oil filter: pressure part 1 only without bypass valve, with differential pressure sensor work characteristics see table 3, pressure / flow control unit I, II each a piece.

[0056] Table 3: the working characteristics of hydraulic oil filter

[0057] Maximum working pressure 22 MPa Maximum flow rate 80 L / min Filtering accuracy 3 μm, β3≥ 200 By-pass valve None Pressure difference alarm value 6.9 ± 1 bar

[0058] The sampling valve: for system oil sampling detection, using needle valve, flow 5 L / min, pressure resistance ≥1.5 Mpa, pressure / flow control unit I, II each a piece.

[0059] The buffer valve: for inhibiting hydraulic impact protection pressure transmitter, pressure / flow control unit I, II each a piece.

[0060] The safety valve: pressure / flow control unit I is 3 pieces, which respectively provides safety protection for system pressure supply path, system oil return path and oil supply path; pressure / flow control unit II is 2 pieces, which respectively provides safety protection for system pressure supply path and system oil return path.

[0061] The stop valve: respectively used for closing pressure supply circuit and providing pressure relief path for system when the equipment is stopped, pressure / flow control unit I and II are two pieces.

[0062] The electromagnetic valve: used for closing / opening oil supply circuit.

[0063] The integrated temperature sensor: monitors system working oil temperature, and the control system controls the over-temperature parking alarm according to the set temperature control point. The measurement range is-50℃-200℃, the power supply is DC 24V, the output is 0-5V, the accuracy is 0.5%, and pressure / flow control unit I and II are one piece.

[0064] The hydraulic pipeline: the oil return part adopts Ф18 aviation stainless steel pipe; the high pressure part adopts Ф13 aviation stainless steel pipe; the oil supply part adopts Ф8 aviation stainless steel pipe.

[0065] The quick connector: used for quick connection / replacement of pressure supply, oil return and oil supply hoses and on-machine pressure supply, oil return and oil supply valves and conversion connection of equipment self-circulation connector.

[0066] The pressure supply valve: 6 pieces, matched with four type machine interface connection, single system machine type 1 piece, double system machine type 2 pieces.

[0067] The oil return valve: 6 pieces, matched with four type machine interface connection, single system machine type 1 piece, double system machine type 2 pieces.

[0068] The pressure supply, oil return and oil supply hoses: provide external connection pipeline for the equipment, pressure supply hose 13II-4000C: length 4 meters, pipe diameter Ф13, working pressure 25MPa; oil return hose (22I-4000C): length 4 meters, pipe diameter Ф22, working pressure 5MPa, oil supply hose (06I-4000C): length 4 meters, pipe diameter Ф6, working pressure 5MPa, the hose is marked, of which the pressure supply and oil return hoses are 2 sets, and the oil supply hose is 1 set.

[0069] The water removal multi-path module: provides a water removal device parallel interface.

[0070] Referring to Figure 7 The working principle of the adapter of the embodiment for single system machine connection test / machine cleaning is as follows:

[0071] Oil supply part: oil from the external hydraulic source, through the pressure adapter valve 2, quick connector 1, proportional pressure reducing valve 3, proportional flow valve 4, buffer valve 6, pressure transmitter 5

monitor the oil pressure of the device. Pressure transmitter output signal after processing by the control system, the oil pressure is displayed on the operation screen, when the supply pressure is greater than or equal to the set value, the device automatically stops the pressure, and prompts "system overpressure, please check the corresponding parts".

[0072] Oil return part: oil from the aircraft hydraulic tank suction interface, through the oil suction valve 14, quick connector 15, into the adapter return hose 16, one-way valve 18, water removal multi-block 29, temperature sensor 20 temperature sensor output signal after processing by the control system, the oil return temperature is displayed on the operation screen, when the oil temperature exceeds the set value, the device stops the pressure, and prompts "system overtemperature, wait for the oil temperature to drop to 50℃, then start the device.", quick connector 21, return adapter valve 22, then the oil returns to the external hydraulic source through the oil suction hose. Sampling valve 19, safety valve 17 are provided on the oil return pipeline.

[0073] Referring to Figure 8 The working principle of the adapter of the embodiment for double system connection test / cleaning-in-place is as follows:

[0074] Oil supply part: oil from the external hydraulic source I, II, through the pressure adapter valve 2, 33, quick connector 1, 32, proportional pressure reducing valve 3, 34, proportional flow valve 4, 35, buffer valve 6, 37, pressure transmitter 5, 36

monitor the oil pressure of the device. Pressure transmitter output signal after processing by the control system, the oil pressure is displayed on the operation screen, when the supply pressure is greater than or equal to the set value, the device automatically stops the pressure, and prompts "system overpressure, please check the corresponding parts".

[0075] The oil return part: the oil liquid from the aircraft hydraulic tank suction port, through the suction valve 14, 43, the quick connector 15, 44, the adapter oil return hose 16, 45, the one-way valve 18, 47, the temperature sensor 20, 49, the temperature sensor output signal is processed by the control system, and the oil return temperature is displayed on the operation screen. When the oil temperature exceeds the set value, the device stops supplying pressure, and prompts "system over temperature, wait for the oil temperature to drop to 50°C, and then start the device.", the quick connector 21, 50, the oil return switching valve 22, 51, and then the oil liquid returns to the external hydraulic source through the oil suction hose. The sampling valve 19, 46, the safety valve 17, 48 are arranged on the oil return pipeline.

[0076] Referring to Figure 9 The working principle of the aircraft hydraulic tank refueling of the adapter in this embodiment is as follows:

[0077] The oil liquid is output from the external hydraulic source, and passes through the pressure supply switching valve 2, the quick connector 1, the proportional pressure reducing valve 3, the proportional flow valve 4, the buffer valve 6, the pressure transmitter 5, the oil filter 8, the electromagnetic valve 9, the refueling hose 10, the quick connector 26, and the refueling valve / joint 27 to enter the aircraft hydraulic tank through the aircraft refueling port. The safety valve 25, the pressure regulating / pressure relief valve 23 are arranged on the refueling pipeline.

[0078] Referring to Figure 10 The working principle of the adapter in this embodiment and the oil liquid water removal device in linkage for vacuum water removal is as follows:

[0079] The vacuum water removal function needs to be used in parallel with the hydraulic universal adapter, and the external hydraulic source needs to use the closed pressure supply mode. The device pressure / flow control unit selects the machine test / cleaning function to remove water from the on-machine hydraulic system. The oil liquid enters the adapter oil return path from the aircraft oil return port, passes through the water removal multi-pass module into the oil liquid water removal device, and then returns to the water removal multi-pass module to the external hydraulic source. The water-removed oil liquid passes through the oil supply circuit and finally enters the aircraft hydraulic system, realizing the aircraft oil liquid water removal work. The oil liquid water removal device uses vacuum water removal.

[0080] After connecting the first quick connector 75 and the second quick connector 76 with the hydraulic universal adapter respectively, switching the reversing valve 64 to the circulating position, starting the motor 66 and the vacuum pump 86. The oil in the hydraulic universal adapter passes through the quick connector 76, the oil return hose 77, the back pressure valve 77, enters the purification tank 71, and the differential pressure transmitter 82 is arranged on the purification tank 71 to monitor the liquid level in the tank. When the liquid level exceeds the set value, the system will stop and prompt the user, and the oil flows from the purification tank 81 through the reversing valve 64, is extracted by the gear pump 65, passes through the one-way valve 67, the oil filter 68, the pressure transmitter 69, the temperature transmitter 70, the pressure regulating stop valve 71, the sampling valve 72, and can sample the oil for offline contamination detection, and the safety valve 73 is used for protecting the hydraulic system to avoid the system oil pressure being too high, the oil supply hose 74, the quick connector 75, and returns to the hydraulic universal adapter.

[0081] At the same time, the vacuum pump 86 is started, the gas passes through the flow regulating valve 78, the air filter coarse 79 and the air filter fine 80 into the purification tank 81, and the absolute pressure transmitter 83 is arranged on the purification tank 81 to monitor the vacuum degree in the tank. When the vacuum degree exceeds the set value, the system will stop and prompt the user, and then passes through the oil-water separator 85 and the vacuum pump 86 to be discharged.

[0082] Referring to Figure 11 Fig. 8, the power supply mode of the adapter of the embodiment is AC 220V / 50Hz, which has overcurrent, leakage, over / under voltage, and short circuit protection prompts. The leakage protector is used for overcurrent and leakage protection of the main power supply circuit and as a switch to cut off the power supply during maintenance, and is selected as 2 poles and 2A with a leakage current of 30mA. The relay is used for system power switch and pressure regulation automatic / manual conversion. The switching power supply is used for power supply of the control board, sensors, electromagnetic valves, and relays, has an output power of 300W, an input voltage range of 175V-264V 50Hz / 60Hz, and shielding measures to prevent electromagnetic radiation from interfering with the control system. The power cable is used for external power supply, adopts a three-core cable with a diameter of 3×1mm 2 , and a length of 20m.

[0083] Referring to Figure 12 Fig. 9, the adapter of the embodiment adopts a self-developed embedded single-chip microcomputer control system control board to realize automatic control of mechatronics, a high-brightness liquid crystal display screen with touch function, and an operation interface developed by professional software for human-computer interaction. The control board is composed of 8-bit AD analog input channels (input 0-5V), 4-bit DA analog output channels (output 0-10V), 8-bit DI on-off quantity input channels, and 8-bit DO on-off quantity output channels. The power supply is 24VDC, one RS485 communication interface, and one RS232 communication interface, which can communicate and control with the lower computer.

[0084] The working principle is that: the adapter control system adopts a single-chip microcomputer structure control board, and is matched with a high-brightness liquid crystal display screen (with touch function) to display the operation interface, and is realized through special software. The control board realizes real-time monitoring of the pressure parameters of the adapter through the integrated AD analog input channel, monitors the oil filter state through the DI switching value input channel, processes the system data information, and displays the data to the operation interface. The user realizes man-machine interaction through the operation interface on the display screen, the system feeds back through the interface operation instruction, analyzes the data, and then realizes the control of the pressure / flow through the DA analog output channel, realizes the automatic / manual mode conversion of the pressure regulation through the DO switching value output channel to control the intermediate relay, so that the output oil pressure and flow of the adapter are converted and regulated. During the operation of the equipment, the control system monitors the outlet pressure and the working state of the oil filter; when the filter element of the oil filter is blocked, the display shows "replace the filter element" and flashes, at which time the user should replace the filter element in time; when the pressure reaches the specified upper limit value, the equipment gives an alarm and stops supplying pressure.

[0085] Based on the above embodiment, the advantages of the oil liquid water removal device of the utility model are analyzed as follows:

[0086] 1. Reliability design

[0087] 1.1 The mechatronic technology of the adapter controlled by the single-chip microcomputer is the mature technology of the company; the selected devices are all the brands adopted by the company's batch production products, more than 95% of which are the mature devices used on the company's batch production products, and the reliability of the main components used in the adapter can meet the requirements of reliability design.

[0088] 1.2 In the design, attention should be paid to the reliability design of the adapter, and strict reliability analysis and design are carried out, including reliability distribution, prediction, use of high-reliability components, redundancy design, derating design and mature technology, and mature technology is adopted for the key components to ensure the reliability of the product.

[0089] 1.3 The adapter analyzes the common failure modes, weak links and factors affecting the reliability of similar mature equipment of the company, and formulates corresponding measures for the weak links in the development process of the adapter to improve the reliability of the product.

[0090] 1.4 The adapter redundantly designs the key systems that affect the safety of the product, sets a pressure transmitter monitoring system on the oil supply pipeline to monitor the oil supply pressure, and automatically stops the pressure supply and prompts the user when the pressure exceeds the set value.

[0091] 1.5 The technology of the adapter is the technology and patent of the mature product used by the company in the field for many years.

[0092] 1.6 The adapter has intelligent control capability, and is provided with a pressure transmitter, a temperature transmitter, an oil filter core alarm sensor, temperature and oil filter state. When the oil filter core is blocked, the system pressure is over, the temperature is over and other faults occur, the device will stop supplying pressure automatically and alarm the user through the display screen.

[0093] 1.7 The adapter structure design adopts the structure design of similar mature equipment of the company, which has been used in the field for many years and has good reliability.

[0094] 1.8 The adapter vehicle body structure adopts surface baking paint process, the hydraulic conduit adopts aviation stainless steel conduit, the pipe joint adopts high-quality steel material processing, and the selected components can avoid damage and strength reduction caused by climate, corrosion, wear and tear and other reasons.

[0095] 1.9 All movable parts and parts with relative movement of the adapter have sufficient space, and the deformation of the structure will not affect its movement. For example, at least 5mm gap is reserved between the conduits, which can effectively avoid the wear and tear between the components.

[0096] 1.10 All detachable parts and non-moving structures connected to each other of the adapter are connected by bolts, and anti-loosening measures are taken to ensure firm and reliable connection.

[0097] 1.11 The adapter design avoids problems such as sudden change in stiffness, sharp corners, sharp edges and low surface finish, reducing factors that may cause stress concentration.

[0098] 1.12 The adapter structure has sufficient use gap under static, thermal and dynamic conditions to prevent mechanical jamming, scratches or other accidents.

[0099] 1.13 The adapter vehicle body door cover is provided with a water blocking line, a drainage place, and a sealing rubber strip is installed to avoid water accumulation, icing and hinder the mechanism work.

[0100] 1.14 The adapter hydraulic system uses nitrile rubber and fluorine rubber materials for all seals, which have good environmental adaptability and avoid leakage caused by the mechanical performance reduction of the seals.

[0101] 1.15 The adapter electrical system has a leakage protector, a circuit breaker for leakage, overcurrent and short circuit, and the selected power supply has overcurrent and under-voltage protection.

[0102] 1.16 The adapter instrument sensor is arranged in the vehicle body.

[0103] 1.17 The adapter signal and power circuit ground are independent circuits, and effective shielding is provided for the signal to avoid the influence of electromagnetic interference or reduce it to an acceptable level, and to protect personnel from electrical injury.

[0104] 2. Maintainability design

[0105] 2.1 The maintainability design is carried out according to the requirements of GJB 368B "General Requirements for Equipment Maintainability" and GJB Z91 "Maintenance Design Technical Manual", the functions are simplified and combined, the unnecessary and secondary functions are eliminated, the same and similar functions are combined for execution, the products and maintenance operations, the same type of parts and components have interchangeability, the components are reduced as much as possible, and the space required for maintenance is ensured on the component layout, the adapter installation, disassembly, maintenance are facilitated, thereby reducing the maintenance content and difficulty; the error prevention measures are adopted for the mechanical and electrical interfaces, the identification is set for the machine interface, and the man-machine engineering design in the field is met.

[0106] 2.2 The adapter has intelligent control capability, and sets up fault alarm prompts such as oil filter element blockage, system overpressure, and overtemperature, thereby improving the accuracy and efficiency of fault detection and diagnosis.

[0107] 2.3 The leakage protector is set in the electrical system, which protects the circuit from short circuit, overcurrent, and leakage, and turns off the power supply during maintenance, thereby improving the safety of maintenance.

[0108] 2.4 The instruments and tools used during maintenance are general instruments and tools.

[0109] 2.5 The components used in the adapter do not need or rarely need preventive maintenance, thereby reducing the content and frequency of maintenance.

[0110] 2.6 The adapter only needs to repair faults, measure, and adjust performance parameters such as proportional pressure reducing valve under the specified use conditions, and does not need to be overhauled.

[0111] 2.7 The adapter identification label is set at a position convenient for maintenance personnel to observe, the identification is printed by silk screen process and hung on the label, which can ensure that it does not fall off or fade during the product overhaul period.

[0112] 2.8 The adapter is composed of four functional modules, i.e. vehicle body structure, pressure / flow control unit, power supply unit, control and display unit.

[0113] 2.9 The adapter often has movable door covers at the operating panel or corresponding positions, the door covers can be easily opened, and the inspection points, test points, and inspection windows are arranged at positions convenient for access.

[0114] 2.10 The switches of the adapter are arranged near the door covers and have movable door covers at the corresponding positions, and the accessibility is good.

[0115] 2.11 The adapter is configured at different locations according to the size of the failure frequency of the parts, the difficulty of adjustment, the size of the weight, etc., to ensure good accessibility of parts with high failure frequency and frequent preventive maintenance, and to provide necessary maintenance space.

[0116] 2.12 The adapter is easily damaged and cannot be repaired, and all parts are detachable assemblies, and use easy-to-disassemble connectors (such as threaded mounting and pipe joint mounting) to facilitate quick replacement and repair.

[0117] 2.13 The adapter has interchangeability of parts and components of the same type and function.

[0118] 2.14 The adapter uses standardized design and selects standardized equipment, accessories and parts. Standard components and parts are used, and if there are no suitable standard parts temporarily, non-standard parts are designed according to the interface of standard parts, which can provide conditions for using standard parts in the future.

[0119] 2.15 The adapter has operation sequence numbers and movement direction marks (such as switch direction, pressure knob direction, etc.) for operating devices with fixed operation procedures.

[0120] 2.16 The adapter uses error-proof design to ensure correct installation of directional accessories and to prevent similar but functionally different accessories from being installed together.

[0121] 2.17 The adapter marks the flow direction on fluid accessories (such as check valves, safety valves, etc.) to prevent reverse installation.

[0122] 2.18 The adapter uses error-proof design to ensure that important equipment or parts cannot be installed incorrectly.

[0123] 2.19 The adapter uses error-proof design to prevent errors during connection and assembly, and even if an operation error occurs, it can be immediately discovered to avoid damage to the device and accidents.

[0124] 2.20 The adapter has physical error-proof measures at the electrical, hydraulic, and mechanical connections of adjacent products to prevent them from being interchanged or installed incorrectly.

[0125] 2.21 The adapter's oil filter and filter element can be easily disassembled without draining the system and oil tank.

[0126] 2.22 The operation interface is provided with a help button, which contains built-in operation rules, precautions and troubleshooting methods of common faults, etc., so that the operator can obtain help at any time; the operator is prompted by prompt information at each step of operation, and important instructions are required to be confirmed repeatedly before input; the operation design is simplified according to the human-machine engineering design, so as to minimize the workload of the operator, facilitate the operation of the user, give clear and explicit prompts in the operation, and minimize the requirement for the operator's skills.

[0127] 3. Testability design

[0128] 3.1 The product testability design and analysis are performed according to GJB 2547-2012 “General Requirements for Testability of Equipment”, GJB 5188-2003 “General Technical Requirements for Aircraft Ground Automatic Test Equipment”.

[0129] 3.2 The adapter has a relatively perfect in-machine test technology, has a start-up self-detection function, and completes self-confidence test, fault isolation and verification test.

[0130] 3.3 The adapter adopts a single-chip microcomputer control system, and sets up monitoring and display of pressure, temperature and oil filter state in the system; when the oil filter is blocked and the working pressure and temperature of the system exceed the set value, the equipment stops and gives an alarm to the user.

[0131] 3.4 The adapter has power over / under voltage, overcurrent, open-phase and electric leakage protection prompt functions.

[0132] 3.5 The types and quantities of detection points can meet the needs of repair agencies at all levels, and their layout is conducive to testing, as far as possible concentrated or zoned concentrated, and good accessibility.

[0133] 3.6 The selection of detection points adapts to the principle of in-situ testing, and their arrangement should be conducive to logical sequential testing.

[0134] 3.7 The marking of detection points should be eye-catching, and nameplates and identification silk printing are used as markers.

[0135] 3.8 The adapter has software and hardware interfaces, which is convenient for equipment periodic inspection and on-site verification; the used transmitters are located at positions convenient for disassembly and removal for inspection or calibration.

[0136] 4. Safety design

[0137] 4.1 The adapter design provides maximum safety and convenience during the use process of equipment installation, disassembly, transportation, maintenance, operation, storage and storage, etc., meets the relevant provisions of GJB 900A “General Requirements for Safety of Equipment”, and is executed in combination with the provisions of Section 5.13 of GJB 2873-1997 “Guidelines for Human-Machine Engineering Design of Military Equipment and Facilities”.

[0138] 4.2 Safety design

[0139] To achieve the goal of safety design of the equipment, and in combination with the specific circumstances of the equipment, in reference to the relevant provisions of GJB900A, the safety design of the equipment is divided into mechanical system safety design, electrical control system safety design, power protection, error prevention, software safety design, etc., which can avoid unacceptable risk of accidents.

[0140] 4.2.1 Mechanical system safety design The safety design of the mechanical system reduces the safety hazards caused by mechanical failure to the equipment operators, maintenance personnel and support objects through material selection, structure design, joint connection design and operation control design. The measures include:

[0141] a) Select high-quality processing materials to ensure the strength, stability and safety of the equipment structure;

[0142] b) Error prevention and safety design of mechanical joint connection;

[0143] c) Control operation design for easy use, with operation step prompts and anti-misoperation design;

[0144] d) The sharp edges of the adapter edges are rounded to prevent scratches and injuries;

[0145] e) The movable parts are provided with protection to prevent injuries caused by misoperation.

[0146] 4.2.2 Safety design of electrical control system The safety design of the electrical control system reduces the safety hazards caused by electrical failure to the equipment operators, maintenance personnel and support objects through the combination of the grounding and automatic protection of the electrical characteristics of the equipment. The measures include:

[0147] a) All metal parts, panels, control boxes and shielding layers of the equipment are reliably grounded under normal working conditions, and the tail of the vehicle body is provided with a grounding wire and a grounding mark;

[0148] b) The equipment uses standard 220V single-phase power supply, and a three-wire electrical connection is used in the power supply circuit, i.e. in addition to the working zero, a protective zero line is also provided, and the vehicle shell is grounded to prevent safety problems such as electric shock. The leakage protector used in the electrical system has automatic trip protection functions such as short circuit, overcurrent and leakage, to prevent parts from failing in a chain reaction.

[0149] 4.2.3 Power protection design measures include:

[0150] a) The power supply selects an industrial-grade switching power supply with overvoltage and overcurrent protection functions, and at the same time, has shielding measures to prevent electromagnetic radiation and other functions, to ensure that the safety of the equipment itself is not affected when the external power supply is abnormal;

[0151] b) The electrical plug (socket) is designed to prevent misconnection, and the pin is not electrified when the plug (socket) is separated.

[0152] 4.2.4 Error prevention design The unique interface design is marked to reduce the safety hazards caused by human error, including:

[0153] a) The selection and installation position of the connector are fully considered to avoid installation errors;

[0154] b) Each module of the device has a clear mark to prevent incorrect installation.

[0155] 4.2.5 Software safety design measures include:

[0156] a) Use safe and reliable data backup to prevent user data loss.

[0157] 4.2.6 In the hydraulic system of the device, pressure transmitters and temperature sensors are installed to monitor the working pressure and oil temperature. When the pressure and oil temperature are greater than the set value, the device will stop and alarm to prevent damage to the aircraft hydraulic system components.

[0158] 4.2.7 Safety valves are installed in the oil supply, return, and oil filling pipelines of the device's hydraulic system to protect the system pressure and prevent damage to the aircraft hydraulic system components.

[0159] 4.2.8 Serious safety devices and components have automatic protection measures. When a component or device fails, it will not cause harm to personnel or damage to other devices and components. The system and components that are prone to serious consequences, such as proportional valves and other critical devices and systems, are placed in positions that are not easily damaged.

[0160] 4.2.9 The adapter hydraulic system is equipped with high-precision oil filters and self-cleaning measures to ensure that the aircraft hydraulic system is not contaminated.

[0161] 4.2.10 The device has an oil filter clogging alarm. When the oil filter cartridge is clogged, the device will stop and alarm, and the display screen will prompt the user to "replace the XX oil filter cartridge." The oil filter status bar will display "replace the filter XX" and flash red.

[0162] 4.2.11 The device uses a computer-controlled configuration Chinese interface to monitor the device's operating status (pressure, temperature, oil tank level, oil filter cartridge status) in real time. The design is human-friendly, with operation buttons, function selection, digital display, and alarm indication. Each step of operation has a corresponding operation prompt. When the pressure and temperature reach the alarm value, the device will automatically protect and stop and alarm.

[0163] 4.2.12 The operation panel is provided with an emergency stop button. When the equipment has a sudden failure, press the emergency stop button to stop the equipment immediately to prevent damage to the equipment and the aircraft hydraulic system.

[0164] 4.2.13 The adapter separates dangerous items, components and operations from other operations, areas, personnel and materials. 4.2.14 The adapter has dangerous parts that are marked with prominent signs, symbols and words to prevent accidents and endanger personnel and equipment safety.

[0165] 4.2.15 The equipment "User Maintenance Manual" and "Simple Operation Method and Matters Needing Attention" specify the requirements for regular inspection and oil cleaning of the equipment, and the "User Maintenance Manual" specifies the specific requirements for oil testing and safety-related precautions.

[0166] 4.2.16 The equipment "User Maintenance Manual" and "Simple Operation Method and Matters Needing Attention" list safety-related parts as precautions.

[0167] 4.2.17 Safety operation warning signs and operation flow instruction plaques are placed in a prominent position to remind operators to operate according to the specified process.

[0168] 5. Assurance design

[0169] 5.1 According to the requirements of the adapter design assurance work, the ability to perform tasks without failure and the ability to repair quickly are emphasized. From the beginning of the adapter design, comprehensive support work is emphasized, and assurance is considered as important as performance, progress and cost. It is emphasized that comprehensive support must be carried out to influence product design, and through comprehensive support activities such as assurance analysis, an optimized comprehensive support plan is developed to reduce the use and support cost of the adapter. 5.2 Universal tools, instruments, meters and equipment are used for maintenance of the adapter.

[0170] 5.3 The adapter uses an 8" high-brightness, wide-temperature liquid crystal display screen with touch function to display the operation interface, which can be clearly seen in strong and weak light. Temperature transmitters and pressure transmitters are used to monitor the temperature and pressure of the system, which can be displayed in real time on the operation interface.

[0171] 5.4 The adapter and the docking interface of the aircraft hydraulic system can be connected quickly, simply, safely, reliably, and accurately positioned. 5.5 The equipment can be measured using market standard measuring instruments, without the need to develop special measuring equipment. The pressure and temperature sensors used by the equipment are calibrated by a third-party measurement technology agency before leaving the factory, and the calibration certificate is delivered with the equipment. The measurement confirmation mark is also provided, indicating that it meets the use requirements. The use and maintenance manual delivered with the equipment will clearly specify the measurement method and precautions of the sensors.

[0172] 6.5.6 Assurance information

[0173] Prepare and provide the use and maintenance manual, packing list, certificate of conformity (history book), spare parts list, etc.

[0174] 5.7 Technical training

[0175] After the equipment is delivered to the user, arrange professional technicians to conduct comprehensive technical training on-site for the operating personnel in terms of equipment installation, integration debugging, working principle, operation method, fault analysis, troubleshooting method, daily maintenance of the equipment, and precautions, etc.

[0176] 5.8 Product spare parts

[0177] Prepare a spare parts list to establish the tools and spare parts that come with the equipment.

[0178] 5.9 Technical service

[0179] The equipment is installed with a label indicating the equipment name, model specification, factory number, manufacturer, and factory time, and the equipment name and model specification are consistent with the contract.

[0180] The company's after-sales service system is perfect, with a warranty period of 3 years after acceptance. Lifetime maintenance services are provided, and spare parts are guaranteed. After the warranty period, spare parts and technical support are provided, and fees are charged at cost price. The company's after-sales service system is perfect, providing 7x24-hour technical support and service to users. Within 2 hours of equipment failure, technical personnel will be arranged to repair the equipment on-site within 2 working days.

[0181] 6. Environmental adaptability

[0182] 6.1 Low temperature

[0183] The low temperature environment is considered in the structural design and component selection. The selected components are used in other mature products. The automatic heating control is set for the components with poor low temperature adaptability, such as display screen, to improve the low temperature adaptability. The similar products have been subjected to low temperature storage and working test according to the requirements of GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Methods Part 4: Low Temperature Test", so as to ensure that the equipment can normally work at the specified low temperature storage temperature (-55℃) and the low temperature working temperature (-40℃).

[0184] 6.2 High temperature

[0185] The high temperature environment is considered in the structural design and component selection. The selected components are used in other mature products. The heat dissipation fan is set for the components with high heat to improve the high temperature adaptability. The similar products have been subjected to high temperature storage and working test according to the requirements of GJB150.3A-2009 "Military Equipment Laboratory Environmental Test Methods Part 3: High Temperature Test", so as to ensure that the equipment can normally work at the specified high temperature storage temperature (+70℃) and the high temperature working temperature (+55℃).

[0186] 6.3 Damp heat

[0187] The damp heat environment is considered in the structural design and component selection. The plastic deformation of the components and structural parts is prevented at low temperature. The equipment has a good temperature control system to ensure that the equipment can be normally used at high temperature. The similar products have been subjected to damp heat test according to the requirements of GJB150.9A-2009 "Military Equipment Laboratory Environmental Test Methods Part 9: Damp Heat Test", so as to ensure that the adapter can normally work at the relative humidity of not more than 95%.

[0188] 6.4 Mold

[0189] The mold prevention design is considered in the equipment design process. The chamfer process is adopted in the structural design to avoid the generation of dead angle. The surface treatment adopts the wear-resistant baking paint process to improve the mold resistance. The mold-resistant electrical components are selected and subjected to "three-proofing" treatment. The similar products have been subjected to mold test according to the requirements of GJB150.10A-2009 "Military Equipment Laboratory Environmental Test Methods Part 10: Mold Test", so as to ensure that the adapter can resist the mold grade of not worse than 2 level, without physical damage and can normally work.

[0190] 6.5 Salt spray

[0191] The surface of the vehicle body is coated with wear-resistant baking paint to enhance corrosion resistance and salt spray resistance. The electrical components are resistant to salt spray corrosion and have been treated with "three-proofing" treatment. The same type of product has been subjected to salt spray testing in accordance with GJB150.11A-2009 "Military Equipment Laboratory Environmental Test Methods Part 11: Salt Spray Test", so it can be ensured that the adapter can be used normally in a salt spray environment.

[0192] 6.6 Transportation vibration

[0193] The vibration environment is considered in the design, and damping mechanisms are provided between the front and rear wheels and the vehicle body. The main components of the equipment are provided with damping measures, the fasteners are provided with lock nuts, and the movable parts are provided with open pins and other anti-loosening measures. The same type of product has been tested in accordance with GJB150.16A-2009 "Military Equipment Laboratory Environmental Test Methods Part 16: Vibration Test", so it can be ensured that the adapter can withstand the vibration environment induced during transportation by road, rail, waterway, and air.

[0194] 6.7 Rain

[0195] The whole vehicle adopts a box-type hidden mechanical structure. The upper cover of the vehicle body, the display screen dust cover, and each door cover are provided with a water blocking line and are equipped with sealing rubber strips. A protective cover for use during non-working period is also provided to protect the whole machine in non-working state, so that the whole vehicle has good rainproof ability. The surface of the vehicle body is coated with wear-resistant baking paint, and the adapter can work normally under the ground rainfall intensity of 1.7mm / min.

[0196] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments without departing from the principles and purposes of the utility model within the scope of the utility model.

Claims

1. A dual-system hydraulic universal adapter, characterized in that: It includes two sets of pressure / flow control units and connected control units and power supply units. The first pressure / flow control unit and the second pressure / flow control unit are both connected between an external hydraulic source and the UAV hydraulic system for pressurizing or refueling the aircraft's dual hydraulic system. Each unit is mounted on the vehicle body structure. The control unit includes a control board and a display operation interface. The power supply unit is used to supply power to the two sets of pressure / flow control units and the control units.

2. The dual-system hydraulic universal adapter according to claim 1, characterized in that: The first pressure / flow control unit includes a first pressure supply line, a first return line, and a refueling line. The first pressure supply line supplies oil from the external hydraulic power source first hydraulic system to the aircraft's first hydraulic system. The first return line draws oil from the aircraft's first hydraulic system back to the external hydraulic power source first hydraulic system. The refueling line delivers oil from the external hydraulic power source into the aircraft's hydraulic oil tank through the aircraft's refueling port.

3. The dual-system hydraulic universal adapter according to claim 2, characterized in that: The second pressure / flow control unit includes a second pressure supply line and a second return line; the second pressure supply line supplies oil from the external hydraulic source second hydraulic system to the aircraft's second hydraulic system, and the second return line draws oil from the aircraft's second hydraulic system tank back to the external hydraulic source second hydraulic system.

4. The dual-system hydraulic universal adapter according to claim 3, characterized in that: The pressure supply line is sequentially connected to a pressure supply adapter valve, quick coupling, proportional pressure reducing valve, proportional flow valve, buffer valve, pressure transmitter, oil filter, shut-off valve, pressure supply hose, quick coupling, and pressure supply valve. Oil enters the pressure supply line from the external hydraulic power source, the first hydraulic system / second hydraulic system, through the pressure supply adapter valve, and exits from the pressure supply valve to the aircraft pressure supply valve, entering the aircraft's first hydraulic system / second hydraulic system. A safety valve and a pressure regulating / relief valve are installed on the oil supply line.

5. The dual-system hydraulic universal adapter according to claim 4, characterized in that: The return oil pipeline is sequentially connected to a suction valve, a quick connector, an inlet adapter return oil hose, a check valve, a water removal multi-port module, a temperature sensor, a quick connector, and a return oil transfer valve. Oil enters the return oil pipeline from the first hydraulic system / second hydraulic system through the suction valve, and is output from the return oil pipeline to the return oil transfer valve to enter the external hydraulic power source first hydraulic system / second hydraulic system. A sampling valve and a safety valve are installed on the return oil pipeline.

6. The dual-system hydraulic universal adapter according to claim 5, characterized in that: The refueling pipeline is sequentially connected to a pressure supply adapter valve, quick coupling, proportional pressure reducing valve, proportional flow valve, buffer valve, pressure transmitter, oil filter, solenoid valve, refueling hose, quick coupling, and refueling valve / connector. Oil enters the refueling pipeline from an external hydraulic power source via the pressure supply adapter valve, and exits from the refueling pipeline to the refueling valve / connector valve, then enters the aircraft hydraulic oil tank through the aircraft refueling port. A safety valve and a pressure regulating / relieving valve are installed on the refueling pipeline. The pressure supply adapter valve, quick coupling, proportional pressure reducing valve, proportional flow valve, buffer valve, pressure transmitter, and oil filter are shared with the pressure supply pipeline of the first pressure / flow control unit.

7. The dual-system hydraulic universal adapter according to claim 6, characterized in that: The pressure / flow control unit also includes an oil dehydration device, which comprises a refueling hose, a refueling filter, a refueling shut-off valve, a manual directional valve, a gear pump, a motor, a check valve, an oil supply filter, a pressure transmitter, a temperature transmitter, a pressure regulating shut-off valve, a sampling valve, a safety valve, an oil supply hose, a first quick connector, a second quick connector, a return hose, a flow regulating valve, a coarse air filter, a fine air filter, a purification tank, a differential pressure sensor, an absolute pressure sensor, a transparent hose, an oil-water separator, a vacuum pump, and a back pressure valve; the first quick connector and the second quick connector are respectively connected to a hydraulic universal adapter. After the water removal multi-channel module is connected, the reversing valve is switched to the circulation position, and the motor and vacuum pump are started. The oil in the hydraulic universal adapter enters the purification tank through the first quick connector, return hose, and back pressure valve. From the purification tank, it flows through the reversing valve, is drawn out by the gear pump, and returns to the hydraulic system of the hydraulic universal adapter through the check valve, oil filter, pressure transmitter, temperature transmitter, pressure regulating shut-off valve, sampling valve, safety valve, oil supply hose, and second quick connector. At the same time, the vacuum pump is started, and the gas enters the purification tank through the flow regulating valve, coarse air filter, fine air filter, and then passes through the oil-water separator and is discharged by the vacuum pump. When refueling the purification tank, insert the refueling hose into the oil drum, then switch the reversing valve to the refueling position, open the refueling shut-off valve and the pressure regulating shut-off valve, start the motor to drive the oil pump, and the oil flows through the refueling hose, oil filter, refueling shut-off valve, reversing valve, gear pump, check valve, oil filter, pressure transmitter, temperature transmitter, and pressure regulating shut-off valve into the purification tank. When the oil level in the purification tank reaches the set value, the device automatically stops operating and prompts that refueling is complete.

8. The dual-system hydraulic universal adapter according to claim 1, characterized in that: The control board of the control unit consists of an 8-bit AD analog input channel, a 4-bit DA analog output channel, an 8-bit DI digital input channel, and an 8-bit DO digital output channel.

9. The dual-system hydraulic universal adapter according to claim 1, characterized in that: The vehicle body structure includes a frame and wheels mounted on its bottom. The frame is a hollow box, which houses two pressure / flow control units, a control unit, and a power supply unit. Heat dissipation fins are provided on the side walls of the frame, and the display and operation interface is mounted on the top surface.

10. A dual-system hydraulic universal adapter according to claim 9, characterized in that: The wheel includes four steering wheels arranged in a rectangular pattern, with two front wheels having 360° steering and braking capabilities, and the other two serving as rear wheels.

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