Helicopter fuel sediment discharge device

Abstract

The utility model discloses a kind of helicopter fuel sediment discharge devices, the utility model relates to helicopter maintenance technical field.The helicopter fuel sediment discharge device includes support frame, the upper portion of the support frame is provided with discharge mechanism for discharging sediment fuel, the discharge mechanism includes: support assembly, including the universal wheel of fixed mounting in the bottom of support frame, the front side of the support frame is fixedly installed with button, the upper portion of the support frame is fixedly installed with fixed frame, electric push rod is as core power component, linkage is formed with lifting frame by connecting block, lifting frame bottom then cooperates with movable shaft, limit shaft, movable shaft slides on fixed frame, limit shaft rotates on fixed frame, the coordinated action of both makes lifting frame can be stably and accurately lifted upwards;Lifting frame further drives support plate, support plate is stably supported to hopper by bracket, so that hopper is synchronously lifted with lifting frame and directly opens fuel valve.

Description

Technical Field

[0001] This utility model relates to the field of helicopter maintenance technology, specifically a helicopter fuel sedimentation and discharge device. Background Technology

[0002] Helicopter fuel settling and draining is a frequent routine maintenance task. Sometimes, routine checks of the fuel tank require the fuel to be completely drained. This requires the operator to lie flat, crawl under their abdomen, and carry the fuel drain bottle into the confined space to perform the operation. In routine fuel tank checks, the fuel must be completely drained before work can begin.

[0003] The existing reference is Chinese utility model patent CN220443252U, which discloses an aircraft fuel tank sedimentation device, including an oil collecting funnel, a drainage pipe, and a pin. The oil collecting funnel includes a funnel body and a leak nozzle. The lower end of the drainage pipe is connected to the upper end of the leak nozzle. The pin is installed on the upper end of the drainage pipe. A first air guide pipe is provided in the drainage cavity of the drainage pipe, and a second air guide pipe is provided in the oil leakage cavity of the leak nozzle. A vent hole and multiple first drainage holes are provided on the side wall of the drainage pipe. The second air guide pipe is connected to the vent hole through the first air guide pipe. The oil collecting cavity in the funnel body is connected to the oil leakage cavity through the first drainage hole and the drainage cavity. The device is equipped with an air guide tube on the drain pipe and the leak nozzle, which guides the air below the leak nozzle to the vent at the upper end of the drain pipe for discharge. This prevents the air below the leak nozzle from creating negative pressure on the fuel deposits flowing through the leak nozzle, making it easier to discharge the fuel deposits in the fuel collection funnel. It also prevents the fuel deposits from accumulating in the funnel and overflowing, thus improving the safety of discharging fuel deposits from the aircraft fuel tank.

[0004] The aforementioned sediment discharge device still requires manual operation by crawling under the machine belly. During operation, the valve needs to be manually lifted upwards. Due to the oil pressure above the valve, a certain upward force needs to be applied to the sediment discharge device to lift the valve, resulting in low efficiency. Furthermore, the device discharges oil by its own weight, which is slow. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a helicopter fuel sedimentation and discharge device, which solves the problems of low fuel discharge efficiency and inconvenient valve opening.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A helicopter fuel sedimentation discharge device includes a support frame, and a discharge mechanism is provided above the support frame for discharging sedimented fuel. The discharge mechanism includes:

[0007] The support assembly includes casters fixedly mounted on the bottom of the support frame, a button fixedly mounted on the front side of the support frame, a fixed frame fixedly mounted on the top of the support frame, a movable shaft movably mounted on one side of the fixed frame, a limiting shaft inserted through the other side of the fixed frame, a lifting frame fixedly mounted above the movable shaft and the limiting shaft, connecting blocks fixedly mounted on the center of the two pins on the center of the lifting frame, an electric push rod fixedly mounted between the connecting blocks, and a support plate provided on the top of the lifting frame.

[0008] A flow guide assembly, positioned above the support assembly, is used to open the valve and discharge fuel.

[0009] Preferably, the flow guiding assembly includes a battery and a hopper fixedly installed above the support frame, and a bracket above the support plate. A funnel is fixedly installed above the bracket, a gear pump is connected to the bottom of the funnel, a diversion chamber is connected to the discharge port of the gear pump, bamboo tubes are fixedly installed on both sides of the diversion chamber, and a drive motor is connected to one side of the gear pump.

[0010] Preferably, the movable shaft and the fixed frame are slidably connected, the limiting shaft and the fixed frame are rotatably connected, and the bottom sides of the lifting frame are rotatably connected to the movable shaft and the limiting shaft, respectively.

[0011] Preferably, the electric actuator is movably connected to the fixed frame via a connecting block, and the support plate is rotatably connected to both sides of the top of the lifting frame.

[0012] Preferably, the funnel is fixedly connected to the support plate via a bracket, the bottom of the funnel is provided with a bent tube structure, the inside of the funnel is provided with a tubular structure with an opening at the bottom, and the inlet of the gear pump is connected to the bottom of the funnel.

[0013] Preferably, the bamboo-joint tubes are mirror-symmetrically installed on both sides of the diversion cavity, the ends of the bamboo-joint tubes are located inside the hopper, and the shaft of the drive motor is connected to the drive shaft of the gear pump.

[0014] Beneficial effects

[0015] This invention provides a helicopter fuel sedimentation and discharge device. Compared with the prior art, it has the following advantages:

[0016] (1) The helicopter fuel sedimentation and discharge device effectively solves the problem of inconvenient valve opening by replacing manual operation with a power-driven structure. The electric actuator, as the core power component, is linked with the lifting frame through the connecting block. The bottom of the lifting frame cooperates with the movable shaft and the limiting shaft. The movable shaft slides on the fixed frame and the limiting shaft rotates on the fixed frame. The two work together to enable the lifting frame to be raised stably and accurately. The lifting frame further drives the support plate, which forms a stable support for the funnel through the bracket. The funnel rises synchronously with the lifting frame and directly opens the fuel valve. There is no need for staff to crawl into the confined space under the fuselage, nor is there a need to manually apply upward force to overcome the oil pressure above the valve. This realizes the automatic and convenient opening of the valve.

[0017] (2) This helicopter fuel sedimentation and discharge device improves the fuel discharge efficiency through an active oil extraction system, changing the inefficient traditional method of relying on fuel gravity for discharge. The drive motor and gear pump form a power transmission cooperation. The drive motor drives the gear pump to run at high speed. The gear pump can actively and quickly extract the fuel collected in the funnel. The extraction speed is much higher than the natural flow speed of the fuel. At the same time, the structure design of the funnel can efficiently collect the fuel flowing out after the valve is opened, avoiding waste and retention caused by fuel spillage. The diversion chamber and bamboo tube form a flow guiding cooperation, stably guiding the fuel extracted by the gear pump to the hopper, ensuring that there is no blockage or retention in the fuel discharge process. The fuel discharge efficiency is improved from both the aspects of "active oil extraction" and "smooth flow guidance". Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the elevated frame of this utility model;

[0020] Figure 3 This is a schematic diagram of the bamboo-joint tube installation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the funnel of this utility model;

[0022] In the diagram: 1. Support frame; 2. Discharge mechanism; 21. Support assembly; 211. Casters; 212. Button; 213. Fixing frame; 214. Movable shaft; 215. Limiting shaft; 216. Lifting frame; 217. Connecting block; 218. Electric actuator; 219. Support plate; 22. Flow guide assembly; 221. Battery; 222. Hopper; 223. Bracket; 224. Funnel; 225. Gear pump; 226. Diverter chamber; 227. Bamboo tube; 228. Drive motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a helicopter fuel sedimentation discharge device includes a support frame 1, and a discharge mechanism 2 is provided above the support frame 1 for discharging sedimented fuel. The discharge mechanism 2 includes:

[0025] Support assembly 21 includes casters 211 fixedly mounted to the bottom of support frame 1, a button 212 fixedly mounted on the front side of support frame 1, a fixed frame 213 fixedly mounted on the top of support frame 1, a movable shaft 214 movably mounted on one side of fixed frame 213, a limiting shaft 215 inserted on the other side of fixed frame 213, a lifting frame 216 fixedly mounted above the movable shaft 214 and the limiting shaft 215, and connecting blocks 217 fixedly mounted at the center of the center pins on both sides of the center of the lifting frame 216. An electric actuator 218 is fixedly installed between 17. A support plate 219 is provided above the lifting frame 216. The movable shaft 214 is slidably connected to the fixed frame 213. The limiting shaft 215 is rotatably connected to the fixed frame 213. The bottom sides of the lifting frame 216 are rotatably connected to the movable shaft 214 and the limiting shaft 215, respectively. The electric actuator 218 is movably connected to the fixed frame 213 through the connecting block 217. The support plate 219 is rotatably connected to the top sides of the lifting frame 216.

[0026] Specifically, the casters 211 facilitate the movement of the support frame 1, the fixed frame 213 restricts the position of the lifting frame 216, and the electric push rod 218 is connected to the lifting frame 216 by the connecting blocks 217 on both sides of the electric push rod 218. When the electric push rod 218 extends or retracts, it will adjust the inner angle of the quadrilateral structure at the center of the lifting frame 216 and adjust the height of the support plate 219 so as to push the funnel 224 in the flow guide assembly 22 into the valve. The button 212 controls the extension and retraction of the electric push rod 218 and the start and stop of the drive motor 228 respectively.

[0027] A flow guide assembly 22, positioned above the support assembly 21, is used to open the valve and discharge fuel. The flow guide assembly 22 includes a battery 221 and a hopper 222 fixedly mounted above the support frame 1, and a bracket 223 above the support plate 219. A funnel 224 is fixedly mounted above the bracket 223. A gear pump 225 is connected to the bottom of the funnel 224. The discharge port of the gear pump 225 is connected to a diversion chamber 226. Bamboo-joint tubes 227 are fixedly mounted on both sides of the diversion chamber 226. One side of the gear pump 225... A drive motor 228 is connected to the side. The funnel 224 is fixedly connected to the support plate 219 through the bracket 223. The bottom of the funnel 224 is provided with a bent tube structure. The inside of the funnel 224 is provided with a tubular structure with an opening at the bottom. The inlet of the gear pump 225 is connected to the bottom of the funnel 224. The bamboo tube 227 is mirror-symmetrically installed on both sides of the diversion chamber 226. The end of the bamboo tube 227 is located inside the hopper 222. The rotating shaft of the drive motor 228 is connected to the drive shaft of the gear pump 225.

[0028] Specifically, the battery 221 can power the electric actuator 218 and the drive motor 228, the hopper 222 can receive the discharged fuel, the funnel 224 can prevent fuel from spraying out after the valve is opened, the drive motor 228 drives the gear pump 225 to rotate and draw the fuel out of the funnel 224 and deliver it to the diversion chamber 226, and guide the fuel out of the hopper 222 through the bamboo tube 227. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0029] During operation, the support frame 1 is moved to the helicopter fuel settling and discharge position using the casters 211. The operation button 212 activates the electric actuator 218, which drives the lifting frame 216 via the connecting block 217. Since the bottom sides of the lifting frame 216 are connected to the movable shaft 214 and the limiting shaft 215 respectively, and the movable shaft 214 is slidably connected to the fixed frame 213 while the limiting shaft 215 is rotatably connected to the fixed frame 213, the lifting frame 216 rises upwards under the combined action of the sliding of the movable shaft 214 and the rotation of the limiting shaft 215, thereby driving the upper support... As plate 219 rises, support plate 219 drives funnel 224 through bracket 223 to open helicopter fuel valve, and fuel flows into funnel 224. Press button 212 again to start drive motor 228, drive motor 228 to drive gear pump 225, gear pump 225 to pump fuel in funnel 224 to distribution chamber 226, distribution chamber 226 to bamboo tubes 227 on both sides, and finally fuel is discharged into hopper 222 through bamboo tubes 227. Throughout the process, battery 221 provides power to electric actuator 218 and drive motor 228.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A helicopter fuel sedimentation and discharge device, comprising a support frame (1), characterized in that: A discharge mechanism (2) is provided above the support frame (1) for discharging settled fuel oil. The discharge mechanism (2) includes: The support assembly (21) includes casters (211) fixedly installed at the bottom of the support frame (1), a button (212) fixedly installed on the front side of the support frame (1), a fixed frame (213) fixedly installed on the top of the support frame (1), a movable shaft (214) movably installed on one side of the fixed frame (213), a limiting shaft (215) inserted on the other side of the fixed frame (213), a lifting frame (216) fixedly installed above the movable shaft (214) and the limiting shaft (215), a connecting block (217) fixedly installed at the center of the two pins on the center of the lifting frame (216), an electric push rod (218) fixedly installed between the connecting blocks (217), and a support plate (219) provided above the lifting frame (216). A flow guide assembly (22) is positioned above the support assembly (21) to open the valve and discharge fuel.

2. The helicopter fuel sedimentation and discharge device according to claim 1, characterized in that: The flow guiding assembly (22) includes a battery (221) and a hopper (222) fixedly installed above the support frame (1), and a bracket (223) above the support plate (219). A funnel (224) is fixedly installed above the bracket (223). A gear pump (225) is connected to the bottom of the funnel (224). A diversion chamber (226) is connected to the outlet of the gear pump (225). Bamboo tubes (227) are fixedly installed on both sides of the diversion chamber (226). A drive motor (228) is connected to one side of the gear pump (225).

3. The helicopter fuel sedimentation and discharge device according to claim 1, characterized in that: The movable shaft (214) and the fixed frame (213) are slidably connected, the limiting shaft (215) and the fixed frame (213) are rotatably connected, and the bottom sides of the lifting frame (216) are rotatably connected to the movable shaft (214) and the limiting shaft (215) respectively.

4. The helicopter fuel sedimentation and discharge device according to claim 1, characterized in that: The electric actuator (218) is movably connected to the fixed frame (213) via the connecting block (217), and the support plate (219) is rotatably connected to the top two sides of the lifting frame (216).

5. A helicopter fuel sedimentation and discharge device according to claim 2, characterized in that: The funnel (224) is fixedly connected to the support plate (219) via the bracket (223). The bottom of the funnel (224) is provided with a bent tube structure. The inside of the funnel (224) is provided with a tubular structure with an opening at the bottom. The inlet of the gear pump (225) is connected to the bottom of the funnel (224).

6. A helicopter fuel sedimentation and discharge device according to claim 2, characterized in that: The bamboo tube (227) is installed symmetrically on both sides of the diversion cavity (226), and the end of the bamboo tube (227) is located inside the hopper (222). The shaft of the drive motor (228) is connected to the drive shaft of the gear pump (225).

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