A hydraulic-electric supply device for opening an engine thrust blocker

Abstract

This utility model discloses a hydraulic-electric supply device for opening an engine thrust reverser cowling. It includes a movable housing, an electric hydraulic pump, a battery module, flow and pressure regulating oil circuits, and connecting oil pipes. A cover is provided on top of the housing, and a partition inside the housing divides the interior into a lower component installation space and an upper oil pipe storage space. The electric hydraulic pump, battery module, and flow and pressure regulating oil circuits are all installed in the component installation space, while the connecting oil pipes are stored in the oil pipe storage space. The connecting oil pipes are connected to the electric hydraulic pump via the flow and pressure regulating oil circuits. The battery module provides power to the hydraulic-electric supply device. This utility model can reduce worker fatigue and thus improve work efficiency, save labor costs, and is easy to move.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft engine thrust reverser cowling maintenance technology, specifically relating to a hydraulic-electric supply device for opening the engine thrust reverser cowling. Background Technology

[0002] Currently, opening the thrust reverser cowling of an aircraft engine is mainly done by using a special manual hand-cranked hydraulic pump. However, in practice, this manual hand-cranked hydraulic pump suffers from high labor intensity, low efficiency, and insufficient safety.

[0003] Furthermore, the existing method of using a specialized hand-cranked hydraulic pump to open the aircraft engine thrust reverser cowling can easily lead to lumbar muscle strain and frozen shoulder among the workers. Additionally, the hand-cranked hydraulic supply is difficult to control stably, resulting in inconsistent pressure and a high risk of oil leakage from the thrust reverser cowling opening actuator. Moreover, the existing method requires at least three people to complete this task. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic-electric supply device for opening the engine thrust reverser cowling.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A hydraulic-electric power supply device for opening an engine thrust reverser cowling is characterized by comprising a movable housing, an electric hydraulic pump, a battery module, flow and pressure regulating oil circuits, and connecting oil pipes. A cover is provided on top of the housing, and a partition is provided inside the housing, dividing the interior into a lower component mounting space and an upper oil pipe storage space. The electric hydraulic pump, battery module, and flow and pressure regulating oil circuits are all installed in the component mounting space, while the connecting oil pipes are stored in the oil pipe storage space. The connecting oil pipes are connected to the electric hydraulic pump via the flow and pressure regulating oil circuits, and the battery module provides power to the hydraulic-electric power supply device.

[0007] A further technical solution of this utility model is: a flow regulating valve, a flow meter, a pressure regulating valve, and a pressure meter are connected to the flow and pressure regulating oil circuit.

[0008] A further technical solution of this utility model is as follows: a control panel is provided at one end of the housing, the display ends of the flow meter and pressure gauge are exposed on the control panel, and the control button of the electric hydraulic oil pump is located on the control panel.

[0009] A further technical solution of this utility model is: a ring of steps is provided in the box near the top, and the partition is supported on the steps.

[0010] A further technical solution of this utility model is: a handle hole is provided at one end of the partition.

[0011] A further technical solution of this utility model is: a notch is provided on one side of the partition, and the end of the oil pipe connected to the flow and pressure regulating oil circuit passes through the notch.

[0012] A further technical solution of this utility model is: a set of movable wheels is provided at the bottom of the box, and a handrail is provided at the rear end of the box.

[0013] A further technical solution of this utility model is that the charging port of the battery module is located at the rear end of the housing.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses an electric hydraulic oil pump to supply hydraulic oil, which provides a more stable hydraulic pressure compared to a manual hand-cranked hydraulic pump, thus better preventing oil leakage from the actuator cylinder when the engine thrust reverser fairing is opened during operation. Furthermore, the electric drive reduces worker fatigue and improves work efficiency.

[0016] 2. The housing of this utility model is divided into a device installation space and an oil pipe storage space by a partition. The electric hydraulic oil pump, battery module and flow and pressure regulating oil circuit are all installed in the device installation space, and the connecting oil pipes can be stored in the oil pipe storage space. The overall structure is compact, easy to store and easy to move.

[0017] 3. This utility model can better save labor costs, which can be specifically demonstrated through the following practical applications:

[0018] Based on aircraft operation status and flight statistics, on average, the thrust reverser cowling of one engine needs to be opened for maintenance every two days. Previously, opening the thrust reverser cowling of one engine using a dedicated manual hydraulic pump required three people working together for one hour (total labor time 3 hours). After adopting the hydraulic-electric supply device of this utility model, only two people need to work for 0.5 hours (total labor time 1 hour) to open the double-sided thrust reverser cowling of one engine. It can be seen that 525.6 hours of labor time can be effectively saved annually, resulting in an annual saving of approximately 147,000 yuan in labor costs. Attached Figure Description

[0019] Figure 1 This is a perspective view of the hydraulic-electric supply device according to an embodiment of the present utility model;

[0020] Figure 2 This is a rear view schematic diagram of the hydraulic-electric supply device according to an embodiment of the present utility model;

[0021] Figure 3This is a schematic diagram of the hydraulic electric supply device according to an embodiment of the present invention when the cover is open;

[0022] Figure 4 This is a schematic diagram of the structure of the hydraulic electric supply device after the partition has been disassembled according to an embodiment of the present utility model;

[0023] Figure 5 This is a bottom view schematic diagram of the hydraulic-electric supply device according to an embodiment of the present utility model;

[0024] Figure 6 This is an enlarged schematic diagram of the oil unloading pipe in an embodiment of this utility model;

[0025] Figure 7 This is an enlarged schematic diagram of the control panel in an embodiment of the present invention;

[0026] Figure 8 This is a side view of the connecting oil pipe extending from the side of the housing according to an embodiment of the present invention.

[0027] Meaning of the labels in the attached diagram:

[0028] 1-Box body; 1.1-Side opening; 1.2-Handle groove; 1.3-Step; 2-Box cover; 3-Control panel; 4-Handrail; 5-Swivel caster; 6-Universal caster; 7-Charging port; 8-Block; 8.1-Notch; 8.2-Handle hole; 9-Electric hydraulic oil pump; 9.1-Oil tank; 9.2-Electric pump; 9.3-Oil filler port; 9.4-Oil discharge pipe; 9.5-Switch valve; 10-Connecting oil pipe; 10.1-Quick release connector; 11-Battery module; 12-Flow and pressure regulating oil circuit; 12.1-Flow regulating valve; 12.2-Pressure regulating valve; 13-Axle; 14-Up switch; 15-Power switch; 16-Down switch; 17-Power meter; 18-Flow meter display end; 19-Pressure meter display end. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] The present invention will be further described below with reference to embodiments.

[0033] Example:

[0034] like Figures 1 to 5 The image shows a hydraulic-electric supply device for opening the engine thrust reverser cowling in this embodiment, which includes a housing 1, an electric hydraulic oil pump 9, a battery module 11, a flow and pressure regulating oil circuit 12, and a connecting oil pipe 10.

[0035] In this embodiment, the housing 1 is generally cuboid in shape and made of plastic. A set of casters is provided at the bottom of the housing 1, specifically including two directional wheels 5 and one omnidirectional wheel 6. The two directional wheels 5 are respectively located on both sides of the housing 1 and near the front end, and are connected by an axle 13. The omnidirectional wheel 6 is located at the middle of the rear end of the housing 1. The casters allow the hydraulic-electric supply device to be moved easily.

[0036] A handle 4 is also provided at the rear end of the housing 1. The handle 4 adopts a conventional telescopic and adjustable structure. When it is necessary to move the hydraulic electric supply device, the handle 4 can be extended to drag the hydraulic electric supply device, making it easy to move. When storing, the handle 4 can be shortened.

[0037] A lid 2 is provided on the top of the box body 1. The rear end of the lid 2 is hinged and can be opened by flipping it. A handle groove 1.2 is provided on the box body 1 at the center of the front end of the lid 2, which makes it easier to open the lid 2.

[0038] In this embodiment, a step 1.3 is provided near the top inside the housing 1. A partition 8 is supported on the step 1.3 and can be removed from the housing 1. One end of the partition 8 has a handle hole 8.2, which allows for easy removal of the partition 8. The partition 8 divides the interior of the housing 1 into a lower device installation space and an upper oil pipe storage space. The electric hydraulic pump 9, battery module 11, and flow and pressure regulating oil circuit 12 are all installed in the device installation space. The connecting oil pipe 10 can be coiled up and stored in the oil pipe storage space.

[0039] The electric hydraulic pump 9 is an existing product, mainly consisting of an oil tank 9.1 for storing hydraulic oil and an electric pump 9.2 connected to the oil tank 9.1. The electric pump 9.2 pumps the hydraulic oil out of the oil tank 9.1. The electric hydraulic pump 9 also features a pressure emergency release knob; in an emergency, opening the knob allows the hydraulic oil to flow back to the oil tank via a bypass. The oil filler port 9.3 of the oil tank 9.1 protrudes below the partition, and a sealing cap is provided at the filler port 9.3. The oil drain pipe 9.4 extends from the bottom of the tank body 1. Figure 6 As shown, a switch valve 9.5 is installed on the oil unloading pipe 9.4. The above is the conventional structure of the electric hydraulic oil pump 9, and therefore will not be described in detail.

[0040] The electric hydraulic pump 9 used in this embodiment has an oil tank 9.1 with a capacity of 8L, a maximum pressure of 16MPa (2320PSI), and a factory calibration of 1500PSI.

[0041] The flow and pressure regulating oil circuit 12 is connected to an electric hydraulic oil pump 9 and a connecting oil pipe 10 at its two ends, respectively. In this embodiment, a notch 8.1 is provided on one side of the partition 8, and the end of the connecting oil pipe 10 connected to the flow and pressure regulating oil circuit 12 passes through the notch 8.1. In this embodiment, the side of the housing 1 is provided with a side opening 1.1, such as... Figure 8 As shown, during use, the connecting oil pipe 10 can extend out from the side opening 1.1 to the outside.

[0042] The flow and pressure regulating oil circuit 12 is used to regulate the pressure and flow rate of the oil circuit. It is connected to a flow regulating valve 12.1, a flow meter, a pressure regulating valve 12.2, and a pressure gauge. The components of the flow and pressure regulating oil circuit 12 are connected by rigid oil pipes. The flow rate and pressure of the oil circuit can be obtained through the flow meter and pressure gauge, and the flow and pressure of the oil circuit can be regulated through the flow regulating valve 12.1 and the pressure regulating valve 12.2.

[0043] like Figure 2 and Figure 7As shown, in this embodiment, a control panel 3 is provided at the rear end of the housing 1. The display end 18 of the flow meter and the display end 19 of the pressure gauge are exposed on the control panel 3. In this embodiment, the display end 19 of the pressure gauge is a dial, and the display end 18 of the flow meter is an electronic display screen. The control panel 3 is also provided with control buttons for controlling the electric hydraulic pump 9. The control buttons specifically include a power switch 15, an up switch 14, and a down switch 16. The control circuit for controlling the electric hydraulic pump 9 adopts a conventional control circuit. The control terminals of the flow regulating valve 12.1 and the pressure regulating valve 12.2 can also be located on the control panel 3.

[0044] The battery module 11 provides the power required for the hydraulic electric power supply device. The battery module 11 mainly includes a lead-acid battery, a conventional charging and discharging circuit, a charging port 7, etc. The capacity of the lead-acid battery is 60 amps. The charging port 7 is located at the rear end of the housing 1 and below the control panel 3.

[0045] In this embodiment, a power meter 17 is also provided on the control panel 3 to display the power of the battery module 11.

[0046] In this embodiment, the connecting oil pipe 10 is a flexible hose with a diameter of 1 / 4 inch and a length of 7 meters. Its connecting end is equipped with a domestically produced LL2-H-8M(S) quick-release connector, which is used to connect to the oil circuit of the engine thrust reverser cowling expansion actuator.

[0047] The general usage process of the hydraulic-electric power supply device in this embodiment is as follows:

[0048] The hydraulic-electric power supply unit is towed to the vicinity of the repair point via the handle 4. The connecting oil pipe 10 is removed, and the quick-release connector 10.1 at the connecting end of the connecting oil pipe 10 is connected to the oil circuit connection end of the engine thrust reverser cowl opening actuator. This provides hydraulic pressure to the engine thrust reverser cowl opening actuator, enabling the engine thrust reverser cowl to open. After using the hydraulic-electric power supply unit, the power is turned off, the connecting oil pipe 10 is rolled up and stored in the oil pipe storage space on the partition 8, and finally the hydraulic-electric power supply unit is towed away from the repair site.

[0049] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A hydraulic-electric supply device for opening the engine thrust reverser cowling, characterized in that: The device includes a movable housing, an electric hydraulic pump, a battery module, flow and pressure regulating oil circuits, and connecting oil pipes. The housing has a cover, and the interior is divided by a partition into a lower component mounting space and an upper oil pipe storage space. The electric hydraulic pump, battery module, and flow and pressure regulating oil circuits are all installed in the component mounting space, while the connecting oil pipes are stored in the oil pipe storage space. The connecting oil pipes are connected to the electric hydraulic pump via the flow and pressure regulating oil circuits. The battery module provides power to the hydraulic electric power supply device.

2. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 1, characterized in that: The flow and pressure regulating oil circuit is connected to a flow regulating valve, a flow meter, a pressure regulating valve, and a pressure meter.

3. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 2, characterized in that: A control panel is provided at one end of the housing, and the display terminals of the flow meter and pressure gauge are exposed on the control panel. The control button of the electric hydraulic oil pump is located on the control panel.

4. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 1, characterized in that: The box has a stepped ring near the top, and the partition is supported on the stepped ring.

5. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 4, characterized in that: One end of the partition is provided with a handle hole.

6. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 1, characterized in that: The partition has a notch on one side, and the end of the connecting oil pipe that is connected to the flow and pressure regulating oil circuit passes through the notch.

7. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 1, characterized in that: The bottom of the box is equipped with a set of casters, and the rear end of the box is equipped with a handrail.

8. The hydraulic-electric supply device for opening the engine thrust reverser cowling according to claim 1, characterized in that: The charging port of the battery module is located at the rear end of the enclosure.

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