Hand-held refueling device for electro-hydrostatic actuator

Abstract

The portable refueling device comprises a box body (1), an oil storage tank (2) is arranged on one side of the interior of the box body (1), an electric pump (3) is arranged on one side of the oil storage tank (2), and an inlet (4) and an outlet (5) which are provided with quick connectors (12) are formed in the upper side of the oil storage tank (2). One side of the inlet (4) and one side of the outlet (5) are further provided with a pressure sensor (7) used for detecting refueling pressure and an adjusting valve (6) used for adjusting the refueling pressure, one side wall of the oil storage tank (2) is provided with an oil pointer (8) used for displaying the amount of oil in the oil storage tank (2), the front side of the box body (1) is provided with a bayonet (9) corresponding to the oil pointer (8), one side of the bayonet (9) is provided with a control panel (10), and the upper end of the box body (1) is provided with a handle (11). And a cover plate (33) corresponding to the oil storage tank (2) is arranged at the upper end of the box body (1). The portable refueling device has the advantages of being convenient to carry and convenient to regulate refueling amount and refueling pressure.

Description

Technical Field

[0001] The present invention relates to a portable refueling device, in particular to a portable refueling device for an electrostatic hydraulic actuator. Background Art

[0002] The electrostatic hydraulic actuator (EHA) for aviation is used to control the movement of aircraft landing gear, flaps, speed brakes, rudders and other mechanisms. It is widely used in aircraft onboard systems due to its small size, high control accuracy, low energy consumption, and redundant design. The electrostatic hydraulic actuator is generally composed of a booster tank, a control valve group, an electric pump, an actuator / motor, etc. During the use and maintenance of the electrostatic hydraulic actuator, oil leakage is inevitable. When the oil level in the booster tank drops below the warning line, the functional performance of the electrostatic hydraulic actuator will be reduced. Therefore, it is necessary to refuel the electrostatic hydraulic actuator during maintenance. Since the volume of the booster tank of the electrostatic hydraulic actuator is small (generally less than 1L), and the amount of oil to be replenished is small, when it is maintained in the field, the flow rate output by the traditional refueling truck is large, the refueling amount and refueling pressure are uncontrollable, and it is limited by the site and operating space. Summary of the invention

[0003] The object of the present invention is to provide a portable refueling device for an electrostatic hydraulic actuator, which has the advantages of being easy to carry and easy to adjust the refueling amount and refueling pressure.

[0004] The technical solution of the present invention is as follows: a portable refueling device for an electrostatic hydraulic actuator comprises a box body, an oil storage tank is provided on one side of the interior of the box body, an electric pump is provided on one side of the oil storage tank, an inlet and an outlet with quick-connect joints are provided on the upper side of the oil storage tank, a pressure sensor for detecting the refueling pressure and a regulating valve for adjusting the refueling pressure are also provided on one side of the inlet and the outlet, an oil mark for displaying the amount of oil in the oil storage tank is provided on one side wall of the oil storage tank, a bayonet corresponding to the oil mark is provided on the front side of the box body, a control panel is provided on one side of the bayonet, a handle is provided on the upper end of the box body, and a cover plate corresponding to the oil storage tank is provided on the upper end of the box body.

[0005] In the aforementioned portable refueling device for an electrostatic hydraulic actuator, the electric pump comprises a hydraulic pump and a motor for driving the hydraulic pump.

[0006] In the aforementioned portable refueling device for an electrostatic hydraulic actuator, the control panel includes a control panel, a switch on the lower side of the control panel and a charging port on one side of the switch, and one side of the control panel is provided with wiring for connecting a pressure sensor, a regulating valve and an electric pump.

[0007] In the aforementioned portable refueling device for an electrostatic hydraulic actuator, a battery is arranged in the box, and one side of the battery is connected to a charging port on the control panel.

[0008] In the aforementioned portable refueling device for an electrostatic hydraulic actuator, a filter is provided at the rear side of the inlet.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] This application integrates the oil tank, the electric pump that outputs the oil from the oil tank, the control panel, etc., which is not only easy to carry and has little site restriction, but also a pressure sensor is set on the oil tank to detect the refueling pressure of the electrostatic hydraulic actuator. The refueling pressure can be adjusted by controlling the regulating valve through the control panel. The refueling amount can also be set through the control panel. By starting and stopping the electric pump, refueling can be stopped when the refueling amount reaches the set value, so that the refueling amount and refueling pressure can be accurately controlled. At the same time, the oil level of the refueling device can be observed through the oil mark, and the refueling device can be refilled in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the structure of the present invention;

[0013] Figure 3 It is a structural schematic diagram of the oil storage tank of the present invention;

[0014] Figure 4 It is a structural schematic diagram of the hydraulic oil circuit of the present invention.

[0015] The marks in the attached drawings are: 1-box, 2-oil storage tank, 3-electric pump, 4-inlet, 5-outlet, 6-regulating valve, 7-pressure sensor, 8-oil mark, 9-bayonet, 10-control panel, 11-handle, 12-quick connect connector, 13-filter, 14-hydraulic pump, 15-motor, 16-battery, 18-control panel, 19-switch, 20-charging port, 21-housing, 33-cover. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with embodiments, but is not intended to be limiting of the present invention.

[0017] Embodiment. A portable refueling device for an electrostatic hydraulic actuator, comprising: Figure 1-4As shown, it includes a box body 1, an oil storage tank 2 is provided on one side of the box body 1, an electric pump 3 is provided on one side of the oil storage tank 2, an inlet 4 and an outlet 5 with a quick-connect joint 12 are provided on the upper side of the oil storage tank 2, and a pressure sensor 7 for detecting the refueling pressure and a regulating valve 6 for adjusting the refueling pressure are also provided on one side of the inlet 4 and the outlet 5. An oil mark 8 for displaying the amount of oil in the oil storage tank 2 is provided on one side wall of the oil storage tank 2, a bayonet 9 corresponding to the oil mark 8 is provided on the front side of the box body 1, a control panel 10 is provided on one side of the bayonet 9, a handle 11 is provided on the upper end of the box body 1, and a cover plate 33 corresponding to the oil storage tank 2 is provided on the upper end of the box body 1.

[0018] The electric pump 3 includes a hydraulic pump 14 and a motor 15 for driving the hydraulic pump 14 .

[0019] The control panel 10 includes a control panel 18 , a switch 19 at the bottom of the control panel 18 and a charging port 20 at one side of the switch 19 . A connection for connecting the pressure sensor 7 , the regulating valve 6 and the electric pump 3 is provided at one side of the control panel 10 .

[0020] A battery 16 is disposed in the box body 1 , and one side of the battery 16 is connected to a charging port 20 on the control panel 10 .

[0021] A filter 13 is disposed at the rear side of the inlet 4 .

[0022] The present application includes a box body 1, and the oil storage tank 2, electric pump 3, battery 16 and other components are integrated in the box body 1, which is easy to carry. The upper end of the box body 1 is provided with a protrusion corresponding to the oil storage tank 2, and the handle 11 is connected to one side of the protrusion, so that the overall space can be reduced to reduce the restrictions of the terrain on the present application and improve the applicability. When in use, the external oil pipe is connected to the inlet 4 through the quick connector 12, and the oil storage tank 2 is refueled. The amount of refueling can be observed through the oil mark 8 to prevent too little or too much. The oil will be filtered through the filter 13 during the addition process. When using the present application to refuel the electrostatic hydraulic actuator, first connect the oil pipe to the quick connector 12 of the outlet, and press the switch 19 to realize the oil in the oil storage tank 2. Transport to the outside through the electric pump 3, and the battery 16 is used to power the electric pump 3 and other components. During the process of oil being transported outward, the pressure will be adjusted through the regulating valve 6, and the pressure sensor 7 can detect the output oil pressure and feed it back to the control panel 10. The refueling pressure is adjusted by the regulating valve, and the refueling amount can be measured in real time through the motor speed and the hydraulic pump displacement, thereby achieving stable control of the refueling pressure and flow.

Claims

1. A portable refueling device for an electrostatic hydraulic actuator, characterized in that: The invention comprises a box body (1), wherein an oil storage tank (2) is arranged on one side of the box body (1), an electric pump (3) is arranged on one side of the oil storage tank (2), an inlet (4) and an outlet (5) with a quick-connect joint (12) are arranged on the upper side of the oil storage tank (2), a pressure sensor (7) for detecting the refueling pressure and a regulating valve (6) for adjusting the refueling pressure are also arranged on one side of the inlet (4) and the outlet (5), an oil mark (8) for displaying the amount of oil in the oil storage tank (2) is arranged on one side wall of the oil storage tank (2), a bayonet (9) corresponding to the oil mark (8) is arranged on the front side of the box body (1), a control panel (10) is arranged on one side of the bayonet (9), a handle (11) is arranged on the upper end of the box body (1), and a cover plate (33) corresponding to the oil storage tank (2) is arranged on the upper end of the box body (1).

2. A portable refueling device for an electrostatic hydraulic actuator according to claim 1, characterized in that: The electric pump (3) comprises a hydraulic pump (14) and a motor (15) for driving the hydraulic pump (14).

3. A portable refueling device for an electrostatic hydraulic actuator according to claim 1, characterized in that: The control panel (10) comprises a control panel (18), a switch (19) at the bottom of the control panel (18) and a charging port (20) at one side of the switch (19); and wiring for connecting a pressure sensor (7), a regulating valve (6) and an electric pump (3) is provided at one side of the control panel (10).

4. A portable refueling device for an electrostatic hydraulic actuator according to claim 1, characterized in that: A storage battery (16) is arranged in the box (1), and one side of the storage battery (16) is connected to a charging port (20) on the control panel (10).

5. A portable refueling device for an electrostatic hydraulic actuator according to claim 1, characterized in that: A filter (13) is provided at the rear side of the inlet (4).

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