An aircraft linear refueling platform

Abstract

The application relates to an aircraft straight-line refueling platform, belonging to the technical field of aircraft refueling, which comprises a ground well pit body, a refueling unit, a lifting body, a folding refueling arm, a movable connecting arm, a well cover body and a lifting mechanism, the refueling unit is arranged in the ground well pit body, the refueling unit is connected with a pre-buried oil pipe below a parking apron, the refueling unit is used for filtering and treating fuel, the lifting body is slidably arranged in the ground well pit body in the vertical direction, the folding refueling arm is arranged on the lifting body, the folding refueling arm is used for being unfolded to the aircraft fueling port for refueling or being folded on the lifting body for storage, one end of the movable connecting arm is connected with the refueling unit, and the other end is connected with the folding refueling arm, and the movable connecting arm is used for conveying fuel. The application has the effect that when fuel is not added, the refueling platform does not additionally occupy the parking apron space, and the possibility of interference between the refueling platform and other equipment of the airport is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aircraft refueling technology, in particular to a linear aircraft refueling platform. BACKGROUND

[0002] At present, the refueling of stationary aircraft at the airport is usually carried out in two ways, namely, by using a ground refueling vehicle or a fixed ground refueling station. In the former way, the refueling vehicle is moved to the vicinity of the parked aircraft to refuel it, while in the latter way, the pipeline of the refueling station is pulled out to the refueling port of the aircraft to refuel it.

[0003] In the above two aircraft refueling methods, the refueling equipment occupies a large space on the apron when not in use, and is prone to conflict with other equipment at the airport. SUMMARY

[0004] In order to prevent the refueling platform from occupying additional space on the apron when not in use and reduce the possibility of interference between the refueling platform and other equipment at the airport, the present application provides a linear aircraft refueling platform.

[0005] The linear aircraft refueling platform provided by the present application adopts the following technical solution:

[0006] A linear aircraft refueling platform comprises:

[0007] A ground well pit body embedded below the apron;

[0008] A refueling unit arranged in the ground well pit body, the refueling unit being connected to a pre-buried oil pipe below the apron, and the refueling unit being used for filtering and treating fuel;

[0009] A lifting body slidingly arranged in the ground well pit body along a vertical direction;

[0010] A folding refueling arm arranged on the lifting body, the folding refueling arm being used for unfolding to the refueling port of the aircraft for refueling or folding on the lifting body for storage;

[0011] A movable connecting arm, one end of which is connected to the refueling unit and the other end of which is connected to the folding refueling arm, the movable connecting arm being used for conveying fuel;

[0012] A well cover body arranged on the lifting body and used for sealing or opening the ground well pit body;

[0013] A lifting mechanism arranged in the ground well pit body and used for driving the lifting body to lift or lower.

[0014] Preferably, the folding oiling arm comprises a connecting pipe, a bending pipe, folding pipes, a joint pipe and an oiling joint, the connecting pipe is arranged on the lifting body, the bending pipe is communicated with the connecting pipe through a first rotary joint, the rotation axis of the first rotary joint is arranged along the vertical direction, the folding pipes are arranged in plurality, the plurality of folding pipes are communicated in sequence through second rotary joints, one end of the folding pipes is communicated with the bending pipe through a third rotary joint, the other end of the folding pipes is communicated with the joint pipe through a fourth rotary joint, the rotation axis of the second rotary joint is parallel to the rotation axis of the third rotary joint, the rotation axis of the third rotary joint is perpendicular to the rotation axis of the first rotary joint, the rotation axis of the fourth rotary joint is perpendicular to the rotation axis of the first rotary joint and the rotation axis of the second rotary joint respectively, the oiling joint is communicated on the joint pipe and used for connecting with the aircraft oiling port.

[0015] Preferably, the adjacent folding pipes are directly arranged with springs, when the angle between the adjacent folding pipes is 180°, the springs are in the stretching state.

[0016] Preferably, the plurality of folding pipes away from the oiling joint are arranged with casters, when the angle between the adjacent folding pipes is 180°, the casters on the plurality of folding pipes are located at the same end of the corresponding folding pipe and the side close to the ground.

[0017] Preferably, the movable connecting arm comprises an input pipe, a conveying pipe and an output pipe, the input pipe is communicated with the oiling unit, the output pipe is communicated with the connecting pipe, the conveying pipe is arranged in plurality, the plurality of conveying pipes are communicated in sequence through fifth rotary joints, one end of the conveying pipes is communicated with the input pipe through a sixth rotary joint, the other end of the conveying pipes is communicated with the output pipe through a seventh rotary joint, the rotation axes of the fifth rotary joint, the sixth rotary joint and the seventh rotary joint are parallel to each other and perpendicular to the rotation axis of the first rotary joint.

[0018] Preferably, the connecting pipe, the bending pipe, the folding pipes, the joint pipe, the input pipe, the conveying pipe and the output pipe all adopt hard pipes.

[0019] Preferably, the connecting pipe, the bending pipe, the folding pipes, the joint pipe, the input pipe, the conveying pipe and the output pipe all adopt stainless steel pipes, the ground well body is arranged with a grounding flat iron, copper wires are connected between the connecting pipe and the bending pipe, between the bending pipe and the corresponding folding pipe, between the adjacent folding pipes, between the joint pipe and the corresponding folding pipe, between the input pipe and the corresponding conveying pipe, between the adjacent conveying pipes, between the output pipe and the corresponding conveying pipe, between the output pipe and the connecting pipe and between the input pipe and the grounding flat iron.

[0020] Preferably, the first rotary joint, the second rotary joint, the third rotary joint, the fourth rotary joint, the fifth rotary joint, the sixth rotary joint and the seventh rotary joint are connected with corresponding stainless steel pipes at both ends through copper belts.

[0021] Preferably, the lifting body is provided with a clamping seat corresponding to the folding pipe, and the clamping seat is used for clamping and fixing the folding pipe. When the folding pipe is clamped in the corresponding clamping seat, the length direction of the folding pipe is the vertical direction.

[0022] Preferably, the ground well body is provided with a well ring, the well ring has an opening for the lifting body to move out or move in, the well cover body is used for closing or opening the opening of the well ring, the lifting body has a connecting table, the connecting pipe is fixedly arranged on the connecting table, the elbow pipe is located above the connecting table, and the movable connecting arm is located below the connecting table. The connecting table is used for abutting against the bottom wall of the well ring.

[0023] In summary, the present application has the following beneficial technical effects:

[0024] When the refueling platform is not used, the lifting body and the folding refueling arm and other aircraft refueling equipment are located in the ground well body, and the well cover body seals the ground well body, so that the apron space is not additionally occupied, and the possibility of interference between the refueling platform and other equipment of the airport is reduced. When the aircraft parked at the airport needs to be refueled, the lifting mechanism drives the lifting body to drive the folding refueling arm to extend out of the ground well body, then the folding refueling arm is taken off from the lifting body and stretched to the refueling port of the aircraft for connection, then the fuel delivered by the pre-buried oil pipe is filtered by the refueling unit, then the filtered fuel is delivered into the refueling port of the aircraft through the movable connecting arm and the folding refueling arm, and refueling is realized. When the refueling is completed, the folding refueling arm is folded and retracted to the lifting body, the folding refueling arm is stored, then the lifting body is driven to descend and retract into the ground well body, the fueling point is installed at a position close to the refueling port of the aircraft, the personnel operation intensity is effectively reduced, and the refueling efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural cross-sectional view of the ground well body in Embodiment 1 of the present application.

[0026] Figure 2 is a schematic view of the folding refueling arm in the process of refueling the aircraft in Embodiment 1 of the present application.

[0027] Figure 3 is a schematic view of the folding refueling arm in the process of refueling the aircraft in Embodiment 1 of the present application.

[0028] Figure 4 is a schematic view of the folding refueling arm in the process of refueling the aircraft in Embodiment 1 of the present application.

[0029] Figure 5 is Figure 4 is an enlarged view of part A in figure 1.

[0030] Figure 6 is a top view of the refueling platform in the process of refueling an aircraft in embodiment 1 of the present application.

[0031] Figure 7 is a schematic diagram of the overall structure of the refueling unit and the movable connecting arm in embodiment 1 of the present application.

[0032] Figure 8 is a schematic diagram of the overall structure of the lifting body and the lifting mechanism in embodiment 1 of the present application.

[0033] Figure 9 is an exploded view of the local structure of the lifting body in embodiment 1 of the present application.

[0034] Figure 10 is a schematic diagram of the overall structure of the lifting body in embodiment 2 of the present application.

[0035] BRIEF DESCRIPTION OF DRAWINGS 1, ground well pit body; 2, refueling unit; 3, lifting body; 4, folding refueling arm; 41, connecting pipe; 42, elbow pipe; 43, folding pipe; 44, joint pipe; 45, refueling joint; 5, movable connecting arm; 51, input pipe; 52, conveying pipe; 53, output pipe; 6, lifting mechanism; 61, counterweight; 62, guide wheel; 63, steel rope; 7, first rotary joint; 8, second rotary joint; 9, third rotary joint; 10, fourth rotary joint; 11, spring; 12, caster; 13, fifth rotary joint; 14, sixth rotary joint; 15, seventh rotary joint; 16, copper wire; 17, clamping seat; 18, well ring; 19, opening; 20, connecting table; 21, support; 22, first locking mechanism; 23, second locking mechanism; 24, connecting rod; 25, threaded cylinder; 26, well cover body; 27, outer threaded section. DETAILED DESCRIPTION

[0036] The present application will be further described below. Figures 1-10 The present application will be further described below.

[0037] Embodiment 1:

[0038] The embodiments of the present application disclose an aircraft linear refueling platform. Referring to Figure 1The aircraft linear refueling platform comprises a ground well pit body 1, a refueling unit 2, a lifting body 3, a folding refueling arm 4, a movable connecting arm 5, a well cover body 26 and a lifting mechanism 6, wherein the ground well pit body 1 is embedded below the apron, the ground well pit body 1 adopts a concrete pit body, the upper surface of the ground well pit body 1 is flush with the ground of the apron; a pre-buried oil pipe is arranged in the ground well pit body 1, and the pre-buried oil pipe is used for communication with a fuel source. The refueling unit 2 is arranged in the ground well pit body 1, the refueling unit 2 is in communication with the pre-buried oil pipe extending into the ground well pit body 1 below the apron, and the refueling unit 2 is used for filtering and treating fuel to ensure the cleanliness of fuel supply to the aircraft.

[0039] With reference to Figure 1 and Figure 2 Two supports 21 are fixedly arranged in the ground well pit body 1, the lifting body 3 is slidingly arranged in the ground well pit body 1 between the two supports 21 in the vertical direction, the upper end of the lifting body 3 can extend out of the ground well pit body 1, the well cover body 26 is fixedly arranged at the upper end of the lifting body 3 and is used for sealing or opening the ground well pit body 1. The folding refueling arm 4 is mounted on the lifting body 3 and is located below the well cover body 26, the folding refueling arm 4 is used for unfolding to the aircraft fuel port for refueling or folding on the lifting body 3 for storage, one end of the movable connecting arm 5 is in communication with the refueling unit 2, and the other end is in communication with the folding refueling arm 4, the movable connecting arm 5 can move, and the movable connecting arm 5 is used for conveying the fuel treated by the refueling unit 2 into the folding refueling arm 4; the lifting mechanism 6 is arranged on the support 21 in the ground well pit body 1 and is used for driving the lifting body 3 to lift or lower.

[0040] When the refueling platform is not used, the aircraft refueling equipment such as the lifting body 3 and the folding refueling arm 4 is located in the ground well pit body 1, and the well cover body 26 seals the ground well pit body 1, so that the apron space is not additionally occupied, and the possibility of interference between the refueling platform and other equipment of the airport is reduced; when the aircraft parked at the airport needs to be refueled, the lifting mechanism 6 drives the lifting body 3 to drive the folding refueling arm 4 to extend out of the ground well pit body 1, and since the movable connecting arm 5 has a certain movability, the position of the folding refueling arm 4 can be adapted, the communication between the folding refueling arm 4 and the refueling unit 2 is ensured, then the folding refueling arm 4 is taken off from the lifting body 3 and extended to the aircraft fuel port for connection, then the fuel conveyed by the pre-buried oil pipe is filtered and treated by the refueling unit 2, then the fuel treated by filtering is conveyed into the aircraft fuel port by the movable connecting arm 5 and the folding refueling arm 4, and refueling is realized; after refueling is completed, the folding refueling arm 4 is taken off from the aircraft fuel port and is folded and stored on the lifting body 3, then the lifting body 3 is driven to lower and store in the ground well pit body 1, and by arranging the refueling point at a position close to the aircraft fuel port, the operation intensity of the operator can be effectively reduced, and the refueling efficiency is improved to a certain extent.

[0041] With reference to Figure 1 andFigure 2 In order to facilitate the folding of the oiling arm 4, the lifting body 3 is provided with a connecting table 20, which is located below the well lid body 26, and the folding oiling arm 4 is located between the connecting table 20 and the well lid body 26. Specifically, the folding oiling arm 4 comprises a connecting pipe 41, an elbow pipe 42, a folding pipe 43, a joint pipe 44 and an oiling joint 45, wherein the connecting pipe 41 is fixedly provided on the connecting table 20 of the lifting body 3 in the vertical direction, the connecting pipe 41 is located on the side of the lifting body 3 close to the oiling unit 2, and the lower end of the connecting pipe 41 is used for communication with the movable connecting arm 5.

[0042] Referring to Figure 2 and Figure 3 , the folding pipe 43 is provided with a plurality of folding pipes 43, which are sequentially communicated between the plurality of folding pipes 43, and the adjacent folding pipes 43 are rotationally connected through the second rotary joint 8. The length of the plurality of folding pipes 43 can be designed to be the same or different according to the needs. Specifically, each folding pipe 43 is Z-shaped, the folding pipe 43 at one end of the plurality of folding pipes 43 is communicated with the elbow pipe 42 through the third rotary joint 9, and the folding pipe 43 at the other end is communicated with the joint pipe 44 through the fourth rotary joint 10. Further, the rotation axis of the second rotary joint 8 is parallel to the rotation axis of the third rotary joint 9, and the rotation axis of the third rotary joint 9 is perpendicular to the rotation axis of the first rotary joint 7. The rotation axis of the fourth rotary joint 10 is perpendicular to the rotation axis of the first rotary joint 7 and the rotation axis of the second rotary joint 8, respectively. The oiling joint 45 is fixedly communicated on the joint pipe 44, and the oiling joint 45 is used for connecting with the aircraft oil port.

[0043] Referring to Figure 2 and Figure 4 , wherein the first rotary joint 7, the second rotary joint 8, the third rotary joint 9 and the fourth rotary joint 10 all adopt a pipeline rotary joint with high sealing performance and low rotary damping. At the same time, a corrosion-resistant material is used as the rotary sealing element of the rotary joint, so as to resist the long-term corrosion of oil. Further, the specific structure and principle of the first rotary joint 7, the second rotary joint 8, the third rotary joint 9 and the fourth rotary joint 10 all belong to the prior art, and will not be described in detail here.

[0044] When the aircraft is refueled, the folding refueling arm 4 is removed from the lifting body 3, and the plurality of folding pipes 43 are unfolded in turn, so that the plurality of folding pipes 43 can be laid flat and extended linearly in a direction away from the lifting body 3 on the apron ground, and the elbow pipe 42 can drive the plurality of folding pipes 43 to rotate along the connecting pipe 41 through the first rotary joint 7, so that the horizontal extension direction of the folding refueling arm 4 can be changed, and the joint pipe 44 can be rotated to a vertical state, a horizontal state or an inclined state, which is beneficial to the connection of the refueling connector 45 with the refueling port of the aircraft for refueling. Through the specific design of the folding refueling arm 4, the refueling port of the aircraft can be quickly connected, and the refueling efficiency is improved to a certain extent. Moreover, the plurality of pipe bodies are not prone to mutual entanglement.

[0045] With reference to Figure 4 and Figure 5 , the adjacent folding pipes 43 are fixedly provided with springs 11. Specifically, to facilitate the installation of the springs 11, the two ends of each folding pipe 43 are fixedly provided with pins, and the two ends of each spring 11 are fixedly provided on the two pins close to each other in the adjacent folding pipes 43. When the angle between the adjacent folding pipes 43 is 180°, the spring 11 is in a stretched state. Through the provision of the plurality of springs 11, the springs 11 can provide assistance when the folding refueling arm 4 is recovered, thereby reducing the labor intensity of the operator.

[0046] With reference to Figure 4 , Figure 5 and Figure 6 , the plurality of folding pipes 43 away from the refueling connector 45 are fixedly provided with casters 12. Specifically, except for the folding pipe 43 directly connected with the joint pipe 44, the casters 12 are fixedly provided on the remaining folding pipes 43. When the angle between the adjacent folding pipes 43 is 180°, the casters 12 on the plurality of folding pipes 43 are located at the same end of the corresponding folding pipe 43 and the side close to the ground, i.e. when the plurality of folding pipes 43 are laid flat in a direction away from the lifting body 3 (with reference to Figure 3 ), the casters 12 on the folding pipes 43 are located at the side close to the ground.

[0047] Since the plurality of folding pipes 43 can be unfolded in a direction away from the lifting body 3, through the design of the plurality of casters 12, the plurality of folding pipes 43 can be supported, and the folding pipes 43 can be laid flat. Meanwhile, when the plurality of folding pipes 43 are laid on the ground, the casters 12 can avoid the folding pipes 43 from directly contacting the ground, thereby reducing the abrasion of the folding pipes 43 during movement and saving labor for stretching the folding pipes 43.

[0048] With reference to Figure 2 and Figure 7The movable connecting arm 5 is located below the connecting table 20, and the movable connecting arm 5 comprises an input pipe 51, a conveying pipe 52 and an output pipe 53 for facilitating fuel transmission. The input pipe 51 is fixedly communicated with the fuel filling unit 2, and the output pipe 53 is fixedly communicated with the lower end of the connecting pipe 41. The conveying pipe 52 is provided with a plurality of pipes, and the lengths of the pipes can be designed to be the same or different according to requirements. The pipes are sequentially communicated with each other, and the adjacent pipes are rotatably connected through the fifth rotary joint 13, so that the adjacent pipes can rotate. The pipe at one end of the pipes is communicated with the input pipe 51 through the sixth rotary joint 14, and the pipe at the other end is communicated with the output pipe 53 through the seventh rotary joint 15.

[0049] With reference to Figure 2 and Figure 7 , the rotation axes of the sixth rotary joint 14 and the seventh rotary joint 15 are parallel to each other and perpendicular to the rotation axis of the first rotary joint 7. Further, the rotation axes of the fifth rotary joints 13 between the adjacent pipes can be designed to be different from each other, and at least one of the rotation axes of the fifth rotary joints 13 is parallel to the rotation axis of the seventh rotary joint 15. The structures and principles of the fifth rotary joint 13, the sixth rotary joint 14 and the seventh rotary joint 15 are the same as those of the first rotary joint 7.

[0050] Since the pipes are connected through the rotary joints between the conveying pipe 52 and the input pipe 51, between the adjacent pipes and between the conveying pipe 52 and the output pipe 53, and can be folded and stretched in the vertical direction, the pipes can adapt to the up-down movement of the folding fuel filling arm 4 and ensure the fuel transmission.

[0051] With reference to Figure 2 and Figure 7 , the connecting pipe 41, the elbow pipe 42, the folding pipe 43, the joint pipe 44, the input pipe 51, the conveying pipe 52 and the output pipe 53 are all made of hard pipes, and further, the pipes are made of stainless steel pipes. Since the metal pipes have low friction coefficient and excellent conductivity, the pipes can effectively reduce the friction between the oil and the pipes, reduce the possibility of static electricity generation and reduce the risk of static spark. By using the hard pipes for the whole fuel conveying pipeline, the possibility of static electricity generation can be reduced, the safety can be improved, and the normal fuel filling operation can be ensured in extreme environments.

[0052] With reference to Figure 2 and Figure 7The ground flat iron (not shown in the figure) is pre-embedded in the ground well pit body 1. Copper wires 16 are fixedly connected between the connecting pipe 41 and the elbow pipe 42, between the elbow pipe 42 and the corresponding folding pipe 43, between adjacent folding pipes 43, between the joint pipe 44 and the corresponding folding pipe 43, between the input pipe 51 and the corresponding conveying pipe 52, between adjacent conveying pipes 52, between the output pipe 53 and the corresponding conveying pipe 52, between the output pipe 53 and the connecting pipe 41, and between the input pipe 51 and the ground flat iron. By reserving the connection points at both ends of the stainless steel pipe and the arrangement of the copper wire 16, an electrical clamping mechanism is formed, which helps to ensure that the potential of all stainless steel pipes is consistent at any time, so that all stainless steel pipes are grounded, facilitating the timely discharge of static electricity generated by the flow and friction of oil, and greatly reducing the risk of refueling. The ground flat iron serves as a potential grounding point in the ground well pit body 1, which helps to keep the refueling pipeline in a good grounded state and achieve the effect of timely drainage of static electricity generated in the pipeline.

[0053] Referring to Figure 2 and Figure 7 Further, the first rotary joint 7, the second rotary joint 8, the third rotary joint 9, the fourth rotary joint 10, the fifth rotary joint 13, the sixth rotary joint 14 and the seventh rotary joint 15 are all connected to the corresponding stainless steel pipes at both ends by copper belts, which helps to ensure good electrical conductivity of all stainless steel pipes.

[0054] Referring to Figure 2 and Figure 3 A plurality of clamping seats 17 are fixedly arranged on the lifting body 3, and the clamping seats 17 correspond one-to-one to the folding pipes 43. The clamping seats 17 can be elastic clamping seats, and are used to clampingly fix the folding pipes 43. When the folding pipes 43 are clamped in the corresponding clamping seats 17, the length direction of the folding pipes 43 is vertical. Through the design of the plurality of clamping seats 17, the folding refueling arm 4 can be locked on the lifting body 3, so that the folding refueling arm 4 is not easy to fall off or the like in the retracted state.

[0055] Referring to Figure 1 and Figure 2 In order to facilitate the operation of the operator, a control operation panel (not shown in the figure) is arranged on the lifting body 3, and the refueling unit 2 is electrically connected with the control operation panel to provide convenience for refueling operation. Further, in order to facilitate the filtering treatment of fuel, the refueling unit 2 includes a filter, a booster pump and a flowmeter. The pre-embedded oil pipe, the filter, the booster pump and the movable connecting arm 5 are connected in sequence. The filter is used to filter fuel, the booster pump is used to increase fuel pressure, and the flowmeter is installed on the pipeline between the booster pump and the movable connecting arm 5 and is used to measure the flow of fuel. The filter, the booster pump and the flowmeter are all electrically connected with the control operation panel. In other embodiments, the refueling unit 2 can only use a filter, a control valve and the like.

[0056] Referring to Figure 1 andFigure 8 In order to improve the sliding effect of the lifting body 3, the opposite sides of the support 21 are provided with coaxial linear guides (not shown in the figure), and the lifting body 3 is sleeved on the two linear guides of the support 21, so as to facilitate the linear lifting movement of the lifting body 3 and improve the smoothness of the lifting.

[0057] Referring to Figure 1 , Figure 8 and Figure 9 In order to drive the lifting of the lifting body 3, the lifting mechanism 6 includes a counterweight 61, a guide wheel 62 and a steel wire 63. The counterweight 61 corresponds to the support 21 one by one, the lifting body 3 is located between the two counterweights 61, the counterweight 61 is slidably arranged on the corresponding support 21 in the vertical direction, the steel wire 63 corresponds to the counterweight 61 one by one, one end of the steel wire 63 is fixed on the corresponding counterweight 61, the other end is fixed on the lower end of the lifting body 3, the guide wheel 62 corresponds to the support 21 one by one, the guide wheel 62 is installed on the corresponding support 21, and the steel wire 63 between the counterweight 61 and the lifting body 3 is slidably lapped on the corresponding side of the guide wheel 62; the sum of the gravity of the two counterweights 61 is greater than the sum of the gravity of the lifting body 3, the folding oil adding arm 4 and the well cover body 26, the counterweight 61 is used to lift the lifting body 3 out of the ground pit body 1; The first locking mechanism 22 is arranged on the well cover body 26 for locking or unlocking with the ground pit body 1.

[0058] When refueling is needed, the locking between the well cover body 26 and the ground pit body 1 is unlocked through the first locking mechanism 22. At this time, under the action of the gravity of the counterweight 61, the lifting body 3 is pulled through the steel wire 63 to drive the folding oil adding arm 4 to move out of the ground pit body 1, so as to facilitate the refueling; when the refueling is completed, the well cover body 26 is pressed manually, so that the lifting body 3 is lowered and withdrawn into the ground pit body 1, the lifting body 3 pulls the counterweight 61 upward through the steel wire 63, and then the well cover body 26 is locked with the ground pit body 1 through the first locking mechanism 22, so as to realize the closure of the ground pit body 1, reduce the operation difficulty of the operator, and improve the work efficiency.

[0059] Referring to Figure 1 and Figure 9 Further, the first locking mechanism 22 can adopt a mechanical lock similar to a door lock structure, and the lock tongue is moved by a key or a manually pulled mechanical lock lever, so as to achieve unlocking; the abutment of the lock tongue with the ground pit body 1 can realize the locking of the well cover body 26 and limit the upward movement of the well cover body 26. Specifically, the principle and structure of the first locking mechanism 22 in the field of lifting well are prior art, which will not be described here.

[0060] Referring to Figure 1 and Figure 9The well circle 18 is embedded on the ground well pit body 1, the upper surface of the well circle 18 is flush with the apron ground, the well circle 18 has an opening 19 for moving the lifting body 3 out or in, the well cover body 26 is used for closing or opening the opening 19 of the well circle 18, when the well cover body 26 closes the well circle 18, the upper surface of the well cover body 26 is flush with the apron ground; the well cover body 26 adopts a type of 6061-T6 aluminum alloy, has good mechanical properties and corrosion resistance, the bearing capacity reaches F900 level, the well cover body 26 can bear 90 tons, and meets the requirements of aircraft passing.

[0061] With reference to Figure 1 And Figure 9 The cross section of the bottom wall of the connecting table 20 is larger than that of the opening 19, the connecting table 20 is used for abutting against the bottom wall of the well circle 18, thereby automatically limiting the lifting height of the lifting body 3; the second locking mechanism 23 is designed on the connecting table 20, the second locking mechanism 23 on the connecting table 20 also adopts a mechanical lock, when the connecting table 20 abuts against the bottom wall of the well circle 18, the locking tongue of the second locking mechanism 23 on the connecting table 20 abuts against the upper surface of the well circle 18, the position of the lifting body 3 is limited, so that the lifting body 3 will not move downward under the action of external force, when the refueling is completed, the locking of the locking tongue of the second locking mechanism 23 on the connecting table 20 and the well circle 18 is manually released, so that the lifting body 3 can be lowered under the pressing of external force. Among them, the lifting height of the lifting body 3 is designed at a reasonable level according to needs, which can make the operator conveniently take out and retract the folding refueling arm 4, and also can facilitate the operator to control the refueling amount, refueling speed and the like on the control operation panel. The second locking mechanism 23 belongs to the prior art, and will not be described in detail here.

[0062] The implementation principle of the embodiment 1 of the application is that when the refueling platform is not used, the lifting body 3 and the folding refueling arm 4 and other refueling equipment are located in the ground well pit body 1, and the well cover body 26 seals the ground well pit body 1, so that the apron space is not additionally occupied, which helps to reduce the possibility of interference between the refueling platform and other equipment of the airport.

[0063] When the airport needs to refuel the stationary aircraft, the first locking mechanism 22 is manually operated to unlock the well cover body 26, and then under the action of the gravity of the counterweight 61, the counterweight 61 pulls the lifting body 3 through the steel rope 63 to drive the folding refueling arm 4 to move out of the well pit body 1, at this time the multiple delivery pipes 52 of the movable connecting arm 5 can change the posture to adapt to the position of the folding refueling arm 4, until the connecting table 20 abuts against the bottom wall of the well ring 18, and the locking tongue of the second locking mechanism 23 on the well ring 18 is locked with the upper surface of the well ring 18, the position of the lifting body 3 is locked; then the operating personnel take off the folding refueling arm 4 from the clamping seat 17 on the lifting body 3, and unfold the multiple folding pipes 43 in turn, under the support of the multiple casters 12, the folding pipes 43 can be placed horizontally, then pull the refueling connector 45 to connect with the aircraft fuel port, then connect the line between the aircraft shell and the ground well static grounding terminal, return to the lifting body 3 control operation panel, operate the control operation panel, make the fuel filtered by the fueling unit 2 pass through the movable connecting arm 5 and the folding refueling arm 4 to the aircraft fuel port, and realize refueling.

[0064] When the refueling is completed, the fueling unit 2 is closed, and then the refueling connector 45 is taken off from the aircraft fuel port, and the folding refueling arm 4 is folded back to the lifting body 3 under the assistance of the spring 11, so that the multiple folding pipes 43 of the folding refueling arm 4 are clamped on the corresponding clamping seat 17 respectively, to avoid unnecessary movement of the folding refueling arm 4; then the locking between the second locking mechanism 23 on the connecting table 20 and the well ring 18 is released, the well cover body 26 is manually pressed to drive the lifting body 3 to descend and retract into the well pit body 1, until the well cover body 26 seals the well ring 18, and the well cover body 26 is locked on the well ring 18 of the well pit body 1 through the first locking mechanism 22 at the well cover body 26, the whole refueling process is completed. By installing the refueling point near the aircraft fuel port, the personnel operation intensity can be effectively reduced, and the refueling efficiency can be improved.

[0065] Embodiment 2:

[0066] Reference Figure 10The embodiment of the application differs from the embodiment 1 in that the opposite sides of the folding pipe 43 connected with the joint pipe 44 and the opposite sides of the folding pipe 43 connected with the elbow pipe 42 are rotationally provided with the connecting rods 24, the rotation axis of the connecting rod 24 is perpendicular to the length direction of the corresponding folding pipe 43, the rotation between the connecting rod 24 and the corresponding folding pipe 43 has a certain friction, and a certain external force needs to be applied to cause the rotation, so as to avoid unnecessary rotation of the connecting rod 24; further, the hinge point of the connecting rod 24 on the corresponding folding pipe 43 is close to the caster 12 on the corresponding folding pipe 43, the hinge positions of the connecting rods 24 on the two folding pipes 43 are aligned when the plurality of folding pipes 43 are folded and mounted on the clamping seat 17; the two connecting rods 24 on one of the folding pipes 43 are both threadedly provided with the threaded cylinder 25, and the two connecting rods 24 on the other folding pipe 43 are provided with the external thread segments 27 for threadedly cooperating with the threaded cylinder 25.

[0067] The implementation principle of the embodiment 2 of the application is that when the folding oil adding arm 4 is folded into a plane, the connecting rods 24 on the two folding pipes 43 are rotated to make the two connecting rods 24 on the same side be located on the same straight line, then the threaded cylinder 25 is rotated to make the threaded cylinder 25 cooperate with the external thread segment 27, so as to connect the two connecting rods 24 on the same plane, at this time, the rotation between the adjacent folding pipes 43 is limited, so as to facilitate the simultaneous mounting of the whole folding oil adding arm 4 on the plurality of clamping seats 17 or the simultaneous taking off of the whole folding oil adding arm 4 from the clamping seats 17 of the lifting body 3, so that the folding oil adding arm 4 is not easy to rotate in the taking and placing process, and the operation of the operator is facilitated; when the folding oil adding arm 4 needs to be unfolded or folded, the connecting rod 24 is rotated to make the length direction of the connecting rod 24 consistent with the length direction of the corresponding folding pipe 43, so as not to easily affect the unfolding or storage of the folding oil adding arm 4.

[0068] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made on the structure, shape, principle of the application shall be covered within the protection scope of the application.

Claims

1. An aircraft linear refueling platform, characterized in that, include: A pit body (1) is embedded below the apron; A refueling unit (2) is installed inside the well pit (1). The refueling unit (2) is connected to the pre-buried oil pipe below the apron. The refueling unit (2) is used to filter fuel. The lifting body (3) is slidably installed in the pit body (1) in the vertical direction; Folding refueling arm (4), the folding refueling arm (4) is set on the lifting body (3), the folding refueling arm (4) is used to unfold to the aircraft refueling port for refueling or fold on the lifting body (3) for storage, the folding refueling arm (4) includes a connecting pipe (41), a bend pipe (42), a folding pipe (43), a connector pipe (44) and a refueling connector (45), the bend pipe (42) and the connecting pipe (41) are connected by a first rotary joint (7); The movable connecting arm (5) is connected at one end to the refueling unit (2) and at the other end to the folding refueling arm (4). The movable connecting arm (5) is used to transport fuel. The movable connecting arm (5) includes an input pipe (51), a delivery pipe (52) and an output pipe (53). The input pipe (51) is connected to the refueling unit (2), and the output pipe (53) is connected to the connecting pipe (41). Multiple delivery pipes (52) are provided. The multiple delivery pipes (52) are connected to each other in sequence through a fifth rotary joint (13). One end of the delivery pipe (52) is connected to the input pipe (51) through a sixth rotary joint (14), and the other end of the delivery pipe (52) is connected to the output pipe (53) through a seventh rotary joint (15). The rotation axes of the fifth rotary joint (13), the sixth rotary joint (14) and the seventh rotary joint (15) are parallel to each other and perpendicular to the rotation axis of the first rotary joint (7). Manhole cover body (26), the manhole cover body (26) is set on the lifting body (3) and is used to seal or open the pit body (1); The lifting mechanism (6) is installed inside the pit body (1) and is used to drive the lifting body (3) to rise and fall.

2. The aircraft linear refueling platform according to claim 1, characterized in that: The connecting pipe (41) is set on the lifting body (3). The rotation axis of the first rotary joint (7) is set in the vertical direction. Multiple folded pipes (43) are provided. The multiple folded pipes (43) are connected to each other in sequence through the second rotary joint (8). One end of the multiple folded pipes (43) is connected to the bend pipe (42) through the third rotary joint (9). The other end of the folded pipe (43) is connected to the connector pipe (44) through the fourth rotary joint (10). The rotation axis of the second rotary joint (8) is parallel to the rotation axis of the third rotary joint (9). The rotation axis of the third rotary joint (9) is perpendicular to the rotation axis of the first rotary joint (7). The rotation axis of the fourth rotary joint (10) is perpendicular to the rotation axis of the first rotary joint (7) and the rotation axis of the second rotary joint (8). The refueling connector (45) is connected to the connector pipe (44) and is used to connect to the aircraft refueling port.

3. The aircraft linear refueling platform according to claim 2, characterized in that: Each of the adjacent folded tubes (43) is provided with a spring (11). When the angle between the adjacent folded tubes (43) is 180°, the spring (11) is in a stretched state.

4. The aircraft linear refueling platform according to claim 2, characterized in that: Casters (12) are provided on a plurality of folded pipes (43) away from the refueling connector (45). When the angle between adjacent folded pipes (43) is 180°, the casters (12) on the plurality of folded pipes (43) are located at the same end of the corresponding folded pipe (43) and on the side closer to the ground.

5. The aircraft linear refueling platform according to claim 2, characterized in that: The connecting pipe (41), bend pipe (42), folded pipe (43), connector pipe (44), input pipe (51), delivery pipe (52) and output pipe (53) are all made of rigid pipe.

6. The aircraft linear refueling platform according to claim 5, characterized in that: The connecting pipe (41), bend pipe (42), folded pipe (43), joint pipe (44), input pipe (51), conveying pipe (52) and output pipe (53) are all made of stainless steel pipe. A grounding flat iron is installed in the pit body (1). Copper wires (16) are connected between the connecting pipe (41) and the bend pipe (42), between the bend pipe (42) and the corresponding folded pipe (43), between adjacent folded pipes (43), between the joint pipe (44) and the corresponding folded pipe (43), between the input pipe (51) and the corresponding conveying pipe (52), between adjacent conveying pipes (52), between the output pipe (53) and the corresponding conveying pipe (52), between the output pipe (53) and the connecting pipe (41), and between the input pipe (51) and the grounding flat iron.

7. The aircraft linear refueling platform according to claim 6, characterized in that: The first rotary joint (7), the second rotary joint (8), the third rotary joint (9), the fourth rotary joint (10), the fifth rotary joint (13), the sixth rotary joint (14) and the seventh rotary joint (15) are all connected to the corresponding stainless steel pipes at both ends by copper strips.

8. The aircraft linear refueling platform according to claim 2, characterized in that: The lifting body (3) is provided with a card seat (17), which corresponds one-to-one with the folding tube (43). The card seat (17) is used to fix the folding tube (43). When the folding tube (43) is fixed in the corresponding card seat (17), the length direction of the folding tube (43) is vertical.

9. An aircraft linear refueling platform according to any one of claims 2-8, characterized in that: The well pit body (1) is provided with a well ring (18), the well ring (18) has an opening (19) for the lifting body (3) to move out or move in, the well cover body (26) is used to close or open the opening (19) of the well ring (18), the lifting body (3) has a connecting platform (20), the connecting pipe (41) is fixedly installed on the connecting platform (20), the bent pipe (42) is located above the connecting platform (20), the movable connecting arm (5) is located below the connecting platform (20), and the connecting platform (20) is used to abut against the bottom wall of the well ring (18).

Images