Auxiliary device for disassembling and assembling auxiliary fuel tank

Abstract

The present invention discloses an auxiliary device for disassembling and assembling an auxiliary fuel tank, belonging to the technical field of ground equipment for aircraft, and comprising a base assembly and a lifting platform. It is characterized in that: the base assembly is connected to an inclined support assembly through the lifting platform. The inclined support assembly includes an upper inclined frame and a lower inclined frame. One side of the upper inclined frame is hinged to the lower inclined frame. The lower inclined frame is connected to the upper end of the lifting platform. The upper inclined frame and the lower inclined frame are connected through a telescopic device. The upper end of the inclined support assembly is connected to a fuel tank bracket assembly. The fuel tank bracket assembly includes an inner support plate, an outer support plate, a transmission mechanism and a power mechanism. The outer support plate is slidably matched with the upper end face of the upper inclined frame. An inner support plate is installed in a rectangular through hole of the outer support plate. One end of the inner support plate is rotationally matched with the outer support plate. The inner support plate is connected to the power mechanism through the transmission mechanism. Compared with the prior art, it has the characteristic of facilitating the disassembly and assembly of the auxiliary fuel tank.

Description

Technical Field

[0001] The present invention relates to the technical field of ground equipment for aircraft, in particular to an auxiliary device for disassembling and assembling an auxiliary fuel tank. Background Art

[0002] The traditional method for disassembling and assembling the ACT auxiliary fuel tank of a business jet is mainly manual. A multi-person joint method is used to lift out the auxiliary fuel tank. Since the height is only about 1 meter and the space is narrow, it is difficult for personnel to disassemble and the intensity is high. Moreover, the auxiliary fuel tank is about 2 meters above the ground, and then another part of the maintenance personnel uses a lifting platform 2 to transport it to the ground. During installation, it is necessary to ensure that the installation position of the fuel tank is correct. Since the fuel port of the auxiliary fuel tank is in the same position as the fuel port of the aircraft to be correctly installed, under a large load, the maintenance personnel will become fatigued in a short time. And the surface of the auxiliary fuel tank is smooth, and the composite material structure is easily damaged. Therefore, there are serious safety hazards during the disassembly and assembly process.

[0003] The invention patent application "An Auxiliary Device for Disassembling and Assembling an Aircraft Auxiliary Fuel Tank" (Application No.: 2017106783121) discloses an auxiliary device for disassembling and assembling an auxiliary fuel tank. Its tray can rotate to realize the adjustment of the up and down pitching angle of the auxiliary fuel tank, so that the auxiliary fuel tank can realize multi-directional attitude adjustment, which is convenient for the installation of the auxiliary fuel tank. However, the ACT auxiliary fuel tank of a business jet is installed inside the cargo hold, and the tray of the above-mentioned invention patent application cannot enter the inside of the cargo hold of the business jet, so the disassembly and assembly of the ACT auxiliary fuel tank cannot be completed. Summary of the Invention

[0004] The purpose of the present invention is to provide an auxiliary device for disassembling and assembling an auxiliary fuel tank to solve the deficiency of the existing disassembly and assembly assistance technology that cannot enter the aircraft cargo hold to disassemble and assemble the fuel tank, so as to achieve the purpose of being able to extend the support plate into the aircraft cargo hold and facilitating the disassembly and assembly of the auxiliary fuel tank.

[0005] An auxiliary device for disassembling and assembling an auxiliary fuel tank provided by the present invention includes a base assembly and a lifting platform; it is characterized in that: the base assembly is connected to an inclined support assembly through the lifting platform. The inclined support assembly includes an upper inclined frame and a lower inclined frame. One side of the upper inclined frame is hinged to the lower inclined frame. The lower inclined frame is connected to the upper end of the lifting platform. The upper inclined frame and the lower inclined frame are connected through a telescopic device; the upper end of the inclined support assembly is connected to a fuel tank support assembly. The fuel tank support assembly includes an inner support plate, an outer support plate, a transmission mechanism and a power mechanism. The outer support plate is slidably matched with the upper end surface of the upper inclined frame; a rectangular through hole is provided in the middle position of the outer support plate, and an inner support plate is installed in the rectangular through hole of the outer support plate. One end of the inner support plate is rotatably matched with the outer support plate. The inner support plate is connected to the power mechanism through the transmission mechanism.

[0006] Further, the base assembly includes a base bracket, a support mechanism and universal wheels. Universal wheels are respectively installed at the four corner positions at the lower end of the base bracket, and support mechanisms are respectively installed on both sides at the lower end of the base bracket.

[0007] Further, the support mechanism includes a screw rod, a threaded sleeve, a footrest and a rocker. Threaded sleeves are respectively installed on both sides of the base bracket. Threaded through holes are provided on the threaded sleeves. The screw rod is matched with the threaded through holes of the threaded sleeves. The lower end of the screw rod is connected to the footrest, and a through hole is provided at the upper end. The rocker passes through the through hole at the upper end of the screw rod and is vertically matched with the screw rod.

[0008] Further, the upper end surface of the upper inclined frame is rotatably matched with a plurality of rollers, and the outer support plate is placed on the upper ends of the rollers.

[0009] Further, guide plates are installed on both sides of the upper inclined frame. The two guide plates clamp the outer support plate inside. Guide rails are installed on the inner sides of the guide plates. Chute grooves are respectively provided on both sides of the outer support plate. The guide rails are slidably matched with the chute grooves.

[0010] Further, a limit plate is installed at the lower end of the tail of the outer support plate, and a positioning plate is installed at the upper end of the front part of the upper inclined frame. The positions of the limit plate and the positioning plate correspond to each other.

[0011] Further, long strip holes are respectively provided on both sides of the middle rectangular through hole of the outer support plate, and a plurality of rollers arranged linearly and evenly are installed in the long strip holes.

[0012] Further, the transmission mechanism includes a gear and a transmission shaft. A transmission shaft is installed at one end of the inner support plate. A through hole is provided at one end of the outer support plate and is communicated with the rectangular through hole. The transmission shaft passes through the through hole at one end of the outer support plate and is matched with the gear hole of the gear.

[0013] Further, two symmetrically distributed placement grooves are provided on the outer support plate. One end of the placement groove is open. A pry plate is installed in the placement groove. One end of the pry plate close to the opening of the placement groove is rotatably matched with the outer support plate; the pry plates are respectively connected to the power mechanism through the transmission mechanism. One end of the pry plate close to the opening is connected to the transmission shaft. A through hole communicated with the placement groove is provided at one end of the outer support plate. One end of the transmission shaft passes through the through hole communicated with the placement groove and is fixedly matched with the gear and the gear hole.

[0014] Further, the power mechanism includes a motor, a lead screw, a guide rod, and a guide support. One end of the upper inclined frame is respectively equipped with a guide rod and a lead screw. The two ends of the lead screw are rotationally matched with the upper inclined frame. One end of the lead screw is fixedly connected to the motor shaft of the motor. The guide support is respectively provided with a guide through hole and a threaded through hole. The lead screw is matched with the threaded through hole of the guide support. The guide rod passes through the guide through hole of the guide support. The upper end of the guide support is fixedly connected to the connecting rod through a telescopic device. Both ends of the connecting rod are respectively equipped with racks. The two racks respectively face their corresponding gears. The toothed end of the rack faces downward.

[0015] Compared with the prior art, the present invention has the following prominent beneficial effects:

[0016] 1. In order to enable the auxiliary fuel tank to slide smoothly onto the outer support plate, the structure of the fuel tank bracket assembly is simplified in the present invention. In order to reduce the thickness of the outer support plate, the power mechanism is separated from the transmission mechanism, and the power mechanism is installed on the inclined bracket assembly, minimizing the components installed on the outer support plate, thereby reducing its thickness;

[0017] 2. An inner support plate is installed inside the outer support plate of the present invention. Since the clearance of the aircraft cargo compartment door is small, by rotating the inner support plate, the placement angle of the auxiliary fuel tank can be changed, thereby avoiding its collision with the cabin walls on both sides of the door, and thus the auxiliary fuel tank can be transported out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention.

[0019] Figure 2 is a right side view of the present invention.

[0020] Figure 3 is a top view of the present invention.

[0021] Figure 4 is Figure 1 a partial enlarged view of part A in

[0022] Figure 5 is Figure 2 a partial enlarged view of part B in DETAILED DESCRIPTION OF THE INVENTION

[0023] The present invention will be further described below in conjunction with the specification drawings and specific embodiments.

[0024] As Figure 1 shown, the present invention includes a base assembly 1, an inclined bracket assembly 3, a lifting platform 2, and a fuel tank bracket assembly 4.

[0025] As Figure 2As shown in the figure, the base assembly 1 includes a base bracket 13, a support mechanism 12 and casters 11. Casters 11 are respectively installed at the four corner positions of the lower end of the base bracket 13. Support mechanisms 12 are respectively installed on both sides of the lower end of the base bracket 13. The support mechanism 12 includes a screw 122, a threaded sleeve 123, a footrest 124 and a rocker 121. Threaded sleeves 123 are respectively installed on both sides of the base bracket 13. The threaded sleeve 123 is provided with a threaded through hole. The screw 122 is matched with the threaded through hole of the threaded sleeve 123. The lower end of the screw 122 is fixedly connected to the footrest 124, and the upper end is provided with a through hole. The rocker 121 passes through the through hole at the upper end of the screw 122 and is vertically matched with the screw 122. By rotating the rocker 121, the screw 122 can be driven to rotate, so that the footrest 124 fits with the ground, and the base assembly 1 is fixed and does not move.

[0026] The upper end of the base assembly 1 is connected to the inclined bracket assembly 3 through a lifting platform 2. The upper end of the base bracket 13 is connected to the lower end of the lifting platform 2. In this embodiment, the lifting platform 2 is a hydraulic lifting platform 2. The hydraulic lifting platform 2 is an existing device, and its specific structure will not be described in detail.

[0027] The inclined bracket assembly 3 includes an upper inclined frame 32 and a lower inclined frame 31. One side of the upper inclined frame 32 is hinged to the lower inclined frame 31. The lower inclined frame 31 is fixedly connected to the upper end of the lifting platform 2. The upper inclined frame 32 and the lower inclined frame 31 are connected through a telescopic device. The lower end of the telescopic device is hinged to the lower inclined frame 31, and the upper end of the inner rod of the telescopic device is hinged to the upper inclined frame 32. When the telescopic device expands and contracts, the upper inclined frame 32 can be driven to rotate, so as to change the angle between the upper inclined frame 32 and the lower inclined frame 31.

[0028] As Figure 3 shown, the upper end of the inclined bracket assembly 3 is fixedly connected to the fuel tank bracket assembly 4. The fuel tank bracket assembly 4 includes an inner support plate 43, an outer support plate 41, a transmission mechanism and a power mechanism 6. The outer support plate 41 is slidably matched with the upper end surface of the upper inclined frame 32. The specific matching method is as follows: A plurality of rollers 5 are rotatably matched with the upper end surface of the upper inclined frame 32, and the outer support plate 41 is placed on the upper end of the rollers 5.

[0029] Guide plates are installed on both sides of the upper inclined frame 32. The two guide plates clamp the outer support plate 41 inside. Guide rails are installed on the inner sides of the guide plates. Chute grooves are respectively provided on both sides of the outer support plate 41. The guide rails are slidably matched with the chute grooves.

[0030] As Figure 5As shown, a limiting plate 44 is installed at the lower end of the tail of the outer supporting plate 41, and a positioning plate 45 is installed at the upper end of the front part of the upper inclined frame 32. The positions of the limiting plate 44 and the positioning plate 45 correspond to each other. When the limiting plate 44 of the outer supporting plate 41 moves to the position of the positioning plate 45, the positioning plate 45 can block the limiting plate 44 to restrict the continuous movement of the outer supporting plate 41 and prevent it from detaching from the upper inclined frame 32.

[0031] A rectangular through-hole is provided at the middle position of the outer supporting plate 41. An inner supporting plate 43 is installed in the rectangular through-hole of the outer supporting plate 41. One end of the inner supporting plate 43 away from the auxiliary fuel tank is rotatably matched with the outer supporting plate 41, and a baffle 46 is installed at its upper end. The baffle 46 can play a role in blocking the auxiliary fuel tank. A placing plate is provided below the end of the inner supporting plate 43 where the baffle 46 is installed. The placing plate is fixedly connected to the two inner side walls of the rectangular through-hole of the outer supporting plate 41. The inner supporting plate 43 is placed on the placing plate to prevent the inner supporting plate 43 from rotating downward relative to the outer supporting plate 41.

[0032] Long strip holes are respectively provided on both sides of the middle rectangular through-hole of the outer supporting plate 41, and a plurality of rollers 5 arranged linearly and evenly are installed in the long strip holes.

[0033] Two symmetrically distributed placing grooves are provided on the outer supporting plate 41. One end of the placing groove is open, and a pry plate 42 is installed in the placing groove. One end of the pry plate 42 close to the opening of the placing groove is rotatably matched with the outer supporting plate 41. A placing plate is provided below the end of the pry plate 42 away from the opening of the placing groove. The placing plate is fixedly connected to the two inner side walls of the placing groove. The pry plate 42 is placed on the placing plate to prevent the pry plate 42 from rotating downward relative to the outer supporting plate 41.

[0034] The thickness of the pry plate 42 is less than the thickness of the outer supporting plate 41, and the thickness of the end of the pry plate 42 connected to the transmission shaft is greater than the thickness of the other end. When the pry plate 42 is flipped 180°, the end with a smaller thickness of the pry plate 42 faces the auxiliary fuel tank, and its thickness is lower than the height of the slide rail of the auxiliary fuel tank, so that the auxiliary fuel tank can smoothly slide onto the pry plate 42.

[0035] As Figure 4 As shown, the inner supporting plate 43 and the pry plate 42 are respectively connected to the power mechanism 6 through a transmission mechanism. The transmission mechanism includes a gear 7 and a transmission shaft. One end of the inner supporting plate 43 is installed with a transmission shaft. One end of the outer supporting plate 41 is provided with a through-hole communicating with the rectangular through-hole. The transmission shaft passes through the through-hole at one end of the outer supporting plate 41 and is fixedly matched with the gear hole of the gear 7. One end of the pry plate 42 close to the opening is connected to the transmission shaft. One end of the outer supporting plate 41 is provided with a through-hole communicating with the placing groove. One end of the transmission shaft passes through the through-hole communicating with the placing groove and is fixedly matched with the gear hole of the gear 7.

[0036] A power mechanism 6 is installed on the upper inclined frame 32. The power mechanism 6 includes a motor 66, a lead screw 62, a guide rod 61 and a guide support 65. One end of the upper inclined frame 32 is respectively provided with the guide rod 61 and the lead screw 62. The two ends of the lead screw 62 are rotatably matched with the upper inclined frame 32. One end of the lead screw 62 is fixedly connected to the motor shaft of the motor 66. The guide support 65 is respectively provided with a guide through hole and a threaded through hole. The lead screw 62 is matched with the threaded through hole of the guide support 65. The guide rod 61 passes through the guide through hole of the guide support 65. The upper end of the guide support 65 is fixedly connected to the connecting rod 64 through a telescopic device. The two ends of the connecting rod 64 are respectively provided with racks 63. The two racks 63 respectively face their corresponding gears 7. The toothed end of the rack 63 faces downward. When the lead screw 62 rotates, the guide support 65 can drive the rack 63 to move to the position of the corresponding gear 7 and engage with the gear 7, driving the gear 7 to rotate, so as to drive the inner support plate 43 and the pry plate 42 to rotate respectively.

[0037] In this embodiment, the telescopic device is a telescopic device such as a hydraulic cylinder, a pneumatic cylinder or an electric telescopic rod.

[0038] The operation process is as follows: When using the present invention, after the outer support plate 41 is dragged into the cargo hold of the Airbus A318 business jet, the gear 7 of the transmission mechanism and the rack 63 of the power mechanism 6 are in the same plane. Adjust the inclined bracket assembly 3 so that the inclination of the outer support plate 41 is the same as that of the cargo hold floor, and place the outer support plate 41 on the travel of the auxiliary fuel tank. When the thickness of the outer support plate 41 is higher than the height of the auxiliary fuel tank slide rail, start the power mechanism, so that the rack 63 of the power mechanism drives the gear 7 to rotate, and the pry plate 42 rotates 180°. Remove the block of the auxiliary fuel tank. Since the thickness of the end of the pry plate 42 close to the auxiliary fuel tank is thinner and lower than the height of the auxiliary fuel tank slide rail, the auxiliary fuel tank can slide onto the pry plate 42 by gravity. At this time, start the power mechanism to reverse-rotate the pry plate 42 and pry up one end of the auxiliary fuel tank so that its lower end is higher than the outer support plate 41, so that it can slide onto the outer support plate 41 by gravity. When the auxiliary fuel tank is placed on the outer support plate 41, it is dragged out from the aircraft cargo hold exit. Since the clearance of the aircraft cargo door is small, by rotating the inner support plate 43, the placement angle of the auxiliary fuel tank can be changed, thus avoiding collision with the cabin walls on both sides of the door.

[0039] It should be noted that specific embodiments of the present invention have described the present invention in detail. For those skilled in the art, various obvious changes made without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. An auxiliary device for disassembling and assembling an auxiliary fuel tank, comprising a base assembly (1) and a lifting platform (2); Characterized in that: The base assembly (1) is connected to an inclined support assembly (3) through the lifting platform (2). The inclined support assembly (3) includes an upper inclined frame (32) and a lower inclined frame (31). One side of the upper inclined frame (32) is hinged to the lower inclined frame (31). The lower inclined frame (31) is connected to the upper end of the lifting platform (2). The upper inclined frame (32) and the lower inclined frame (31) are connected through a telescopic device. The upper end of the inclined support assembly (3) is connected to a fuel tank bracket assembly (4). The fuel tank bracket assembly (4) includes an inner support plate (43), an outer support plate (41), a transmission mechanism, and a power mechanism (6). The outer support plate (41) is slidably matched with the upper end surface of the upper inclined frame (32). A rectangular through hole is provided in the middle position of the outer support plate (41). An inner support plate (43) is installed in the rectangular through hole of the outer support plate (41). One end of the inner support plate (43) is rotatably matched with the outer support plate (41). The inner support plate (43) is connected to the power mechanism (6) through the transmission mechanism. A limiting plate (44) is installed at the lower end of the tail of the outer support plate (41). A positioning plate (45) is installed at the upper end of the front part of the upper inclined frame (32). The positions of the limiting plate (44) and the positioning plate (45) correspond to each other. The transmission mechanism includes a gear (7) and a transmission shaft. A transmission shaft is installed at one end of the inner support plate (43). A through hole is provided at one end of the outer support plate (41) and is communicated with the rectangular through hole. The transmission shaft passes through the through hole at one end of the outer support plate (41) and is fixedly matched with the gear hole of the gear (7). The power mechanism (6) includes a motor (66), a lead screw (62), a guide rod (61), and a guide support (65). A guide rod (61) and a lead screw (62) are respectively installed at one end of the upper inclined frame (32). The two ends of the lead screw (62) are rotatably matched with the upper inclined frame (32). One end of the lead screw (62) is fixedly connected to the motor shaft of the motor (66). The guide support (65) is respectively provided with a guide through hole and a threaded through hole. The lead screw (62) is matched with the threaded through hole of the guide support (65). The guide rod (61) passes through the guide through hole of the guide support (65). The upper end of the guide support (65) is fixedly connected to a connecting rod (64) through a telescopic device. Rack bars (63) are respectively installed at both ends of the connecting rod (64). The two rack bars (63) respectively face their corresponding gears (7). The toothed ends of the rack bars (63) face downward.

2. The auxiliary device for disassembling and assembling an auxiliary fuel tank according to claim 1, Characterized in that: The base assembly (1) includes a base bracket (13), a support mechanism (12), and universal wheels (11). Universal wheels (11) are respectively installed at the four corner positions of the lower end of the base bracket (13). Support mechanisms (12) are respectively installed on both sides of the lower end of the base bracket (13).

3. The auxiliary device for disassembling and assembling an auxiliary fuel tank according to claim 2, Characterized in that: The described supporting mechanism (12) includes a screw rod (122), a threaded sleeve (123), a support foot seat (124) and a rocker (121). Threaded sleeves (123) are respectively installed on both sides of the base bracket (13). The threaded sleeve (123) is provided with a threaded through hole. The screw rod (122) is matched with the threaded through hole of the threaded sleeve (123). The lower end of the screw rod (122) is connected to the support foot seat (124), and a through hole is provided at the upper end. The rocker (121) passes through the through hole at the upper end of the screw rod (122) and is vertically matched with the screw rod (122).

4. The auxiliary device for disassembling and assembling an auxiliary fuel tank according to claim 1, characterized in that: The upper end surface of the described upper inclined frame (32) is rotationally matched with a plurality of rollers (5), and the outer support plate (41) is placed on the upper ends of the rollers (5).

5. The auxiliary device for disassembling and assembling an auxiliary fuel tank according to claim 1, characterized in that: Guide plates are installed on both sides of the described upper inclined frame (32). The two guide plates clamp the outer support plate (41) inside. Guide rails are installed on the inner sides of the guide plates. Chute grooves are respectively provided on both sides of the outer support plate (41). The guide rails are slidably matched with the chute grooves.

6. The auxiliary device for disassembling and assembling an auxiliary fuel tank according to claim 1, characterized in that: Long strip holes are respectively provided on both sides of the middle rectangular through hole of the described outer support plate (41), and a plurality of rollers (5) arranged linearly and evenly are installed in the long strip holes.

7. The auxiliary device for disassembling and assembling an auxiliary fuel tank according to claim 1, characterized in that: Two symmetrically distributed placement grooves are provided on the described outer support plate (41). One end of the placement groove is open. A pry plate (42) is installed in the placement groove. The end of the pry plate (42) close to the opening of the placement groove is rotationally matched with the outer support plate (41); the pry plate (42) is respectively connected to the power mechanism (6) through a transmission mechanism. The end of the pry plate (42) close to the opening is connected to a transmission shaft. A through hole communicating with the placement groove is provided at one end of the outer support plate (41). One end of the transmission shaft passes through the through hole communicating with the placement groove and is matched with a gear (7) and a gear hole.

Images