Power assisting equipment for replacing brake drum of aircraft tire

Abstract

The invention discloses a power assisting device for replacing an aircraft tire brake drum, the power assisting device comprises a transport vehicle, a power assisting arm and a side clamp, the power assisting arm is mounted on the transport vehicle, the power assisting arm can be horizontally stretched and folded manually, and the side clamp is arranged at the movable end of the power assisting arm; the side clamping fixture comprises a support, a winch, two clamping arms, a sliding power mechanism, two clamping plates and an overturning power mechanism, the winch is arranged on the upper portion of the support and used for hoisting and laying down the brake drum, the two clamping arms are arranged on the lower portion of the support in a relatively sliding mode, and the sliding power mechanism is arranged on the lower portion of the support and connected with the two clamping arms respectively. The two clamping arms can be driven to slide relatively, the two clamping plates are arranged at the front ends of the clamping arms respectively and can turn over, and the turning-over power mechanisms are arranged on the clamping arms and used for driving the clamping plates to turn over. Through assistance of the power assisting equipment, the personnel investment during replacement of the aircraft tire brake drum can be reduced, the labor intensity is reduced, the brake drum can be better protected in the replacement process, and safety is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft tire brake drum maintenance, and particularly relates to a boosting device for replacing an aircraft tire brake drum. Background Art

[0002] Currently, there are mainly the following two methods for replacing an aircraft tire brake drum:

[0003] 1. Directly lift it by manpower.

[0004] 2. Use a lifting device similar to a forklift. The lifting arm that horizontally extends forward of the lifting device supports the lower part of the brake drum to support and carry the brake drum.

[0005] However, both of the above two methods have deficiencies:

[0006] For the first method, aircraft tire brake drums are relatively heavy, weighing about 67 KG. Lifting by manual labor requires a large amount of manpower and is time-consuming. It requires 4 people to work together for 3 hours (total man-hours of 12H). In addition, manual lifting is likely to cause lumbar muscle strain to personnel, and is not safe, easily hurting personnel or damaging the brake drum.

[0007] For the second method, the lifting arm of the lifting device cannot fit completely with the brake drum, resulting in the brake drum being extremely likely to fall and be damaged. Moreover, the length of the lifting arm of the lifting device is limited, resulting in easy collision with the axle during the use of the lifting device, and the situation of damaging the axle occurs. Summary of the Invention

[0008] The purpose of the present invention is to provide a boosting device for replacing an aircraft tire brake drum. With the assistance of the boosting device of the present invention, the personnel input during the replacement of the aircraft tire brake drum can be reduced, the labor intensity can be lowered, and the brake drum can be better protected and safer during the replacement process.

[0009] The purpose of the present invention is achieved through the following technical solutions:

[0010] A boosting device for replacing an aircraft tire brake drum, characterized in that: it includes a transport vehicle, a boosting arm and a side clamping fixture. The boosting arm is installed on the transport vehicle. The boosting arm can be manually horizontally extended and folded. The side clamping fixture is arranged at the movable end of the boosting arm. The side clamping fixture includes a bracket, a winch, two clamping arms, a sliding power mechanism, two clamping plates and a flipping power mechanism. The winch is arranged at the upper part of the bracket and is used for lifting and lowering the brake drum. The two clamping arms are arranged at the lower part of the bracket and can slide relatively. The sliding power mechanism is arranged at the lower part of the bracket and is respectively connected with the two clamping arms and can drive the two clamping arms to slide relatively. The two clamping plates are respectively arranged at the front ends of the clamping arms. The clamping plates can be flipped. The flipping power mechanism is arranged on the clamping arms and is used for driving the clamping plates to flip.

[0011] A further technical solution of the present invention is as follows: The assisting arm includes a base, a rotating vertical arm, an assisting cylinder, a quadrilateral arm, a middle joint, and a front arm. The base is fixedly installed on the transport vehicle. The lower end of the rotating vertical arm is rotatably connected to the base. The rear end of the quadrilateral arm is hinged to the upper end of the rotating vertical arm. A force - adding plate extends backward from the rear end of the quadrilateral arm. The assisting cylinder is vertically installed on the rotating vertical arm. The lower end of the assisting cylinder is hinged to the rotating vertical arm. The upper end of the piston rod of the assisting cylinder is hinged to the force - adding plate. The front end of the quadrilateral arm is hinged to the middle joint. The rear end of the front arm is rotatably connected to the middle joint. The front arm can rotate horizontally relative to the middle joint. The upper end of the bracket of the side clamping fixture is rotatably connected to the front end of the front arm.

[0012] A further technical solution of the present invention is as follows: The quadrilateral arm includes an upper cross - bar and a lower cross - bar which are arranged parallel to each other up and down. The rear ends of the upper cross - bar and the lower cross - bar are respectively hinged to the upper end of the rotating vertical arm. The front ends of the upper cross - bar and the lower cross - bar are respectively hinged to the middle joint. The force - adding plate is arranged at the rear end of the upper cross - bar.

[0013] A further technical solution of the present invention is as follows: Joint brakes for braking the rotation are respectively provided at the rotational connection between the rotating vertical arm and the base, the rotational connection between the front arm and the middle joint, and the rotational connection between the bracket and the front arm.

[0014] A further technical solution of the present invention is as follows: The sliding power mechanism includes a clamping cylinder. The clamping cylinder is horizontally arranged at the lower part of the bracket and located between the two clamping arms. The clamping cylinder has two piston rods that move synchronously and in opposite directions. The piston rods of the clamping cylinder are connected to the clamping arms.

[0015] A further technical solution of the present invention is as follows: The middle part of the clamping plate is rotatably connected to the front end of the clamping arm through a horizontal connecting shaft. The flipping power mechanism includes two flipping cylinders. The two flipping cylinders are respectively located on the two clamping arms. The rear end of the flipping cylinder is hinged to the clamping arm. The two flipping cylinders are used to drive the two clamping plates to flip respectively. A radially extending connecting plate is fixedly connected to the horizontal connecting shaft. The front end of the piston rod of the flipping cylinder is hinged to the connecting plate.

[0016] A further technical solution of the present invention is as follows: The clamping plate is in an arc shape.

[0017] A further technical solution of the present invention is as follows: The upper part of the bracket is provided with an installation platform extending forward. The winch is installed on the installation platform. A hook is provided on the lifting rope of the winch.

[0018] A further technical solution of the present invention is as follows: The transport vehicle is provided with a tire storage area, a wheel jack storage area, a brake drum wooden box storage area, and an assisting arm installation area. The assisting arm is installed on the assisting arm installation area of the transport vehicle.

[0019] A further technical solution of the present invention is as follows: Nitrogen cylinders are provided on both sides of the front end of the transport vehicle.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention clamps, lifts and lowers the aircraft tire brake drum through side clamping fixtures. During the disassembly and assembly process, manually moving the power arm can achieve easy and flexible pushing and taking out of the brake drum. Moreover, both the replaced brake drum and tire can be placed on a transport vehicle for long-distance transportation. It can be seen that with the assistance of the present invention, the disassembly and assembly of the brake drum can be made easier, labor costs can be reduced, labor intensity can be lowered, and the brake drum can be better protected during the replacement process, making it safer. The present invention can effectively reduce and even avoid equipment damage or personal injury caused by the heavy weight of the brake drum during installation or disassembly, that is, avoid generating unnecessary construction costs.

[0022] 2. The power-assisted device of the present invention is movable, its power arm can be folded, and it can load the replacement parts and tools required for the brake drum, integrating various components, which can effectively save construction time, reduce construction costs, and thus improve work efficiency.

[0023] 3. The effect of the power-assisted device of the present invention in saving labor costs can be illustrated by the following data:

[0024] According to the statistics of the aircraft operation status and the number of flights, about 8 brake drums need to be replaced every month, and at least 96 brake drums need to be replaced every year. When replacing the brake drum by the method in the background art before, the replacement of each brake drum required 4 people to work together for 3 hours (total man-hours of 12H). After being assisted by the present invention, now only 2 people need to work for 2 hours (total man-hours of 4H) to complete the replacement. The man-hours that can be effectively saved every year reach 768 hours, and the man-hour cost that can be saved every year is about 213,100 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of the power-assisted device of the present invention when carrying a tire, a wooden box of the brake drum and the brake drum;

[0026] Figure 2 is a three-dimensional schematic diagram of the transport vehicle of the present invention;

[0027] Figure 3 is a three-dimensional schematic diagram of the transport vehicle of the present invention when carrying a tire, a wooden box of the brake drum and the brake drum, and with a power arm installed;

[0028] Figure 4 is a three-dimensional schematic diagram of the power arm of the transport vehicle of the present invention when folded above the vehicle frame;

[0029] Figure 5 is a three-dimensional schematic diagram of the power arm of the present invention;

[0030] Figure 6 is a front view schematic diagram of the power arm of the present invention;

[0031] Figure 7 It is a schematic structural diagram when the side clamping fixture on the power assist arm of the present invention clamps the brake drum;

[0032] Figure 8 It is a schematic structural diagram when the side clamping fixture of the present invention clamps the brake drum;

[0033] Figure 9 It is a schematic structural diagram when the side clamping fixture of the present invention flips the brake drum by 90 degrees and hooks it with a lifting hook to prepare for placing it into the wooden box for the brake drum.

[0034] Meanings of the reference numerals in the figure:

[0035] 1 - Transport vehicle; 1.1 - Frame; 1.2 - Rear wheel assembly; 1.3 - Hand - operated support feet; 1.4 - Front wheel assembly; 1.5 - Storage area for brake drum wooden boxes; 1.6 - Storage area for tires; 1.7 - Storage area for wheel jacks; 1.8 - Installation area for power assist arm; 2 - Power assist arm; 2.1 - Base; 2.2 - Rotating vertical arm; 2.3 - Power assist cylinder; 2.4 - Quadrilateral arm; 2.5 - Middle joint; 2.6 - Forearm; 2.7 - Upper crossbar; 2.8 - Lower crossbar; 2.9 - Piston rod of the power assist cylinder; 2.10 - Force - adding plate; 2.11 - First vertical connecting shaft; 2.12 - Second vertical connecting shaft; 3 - Side clamping fixture; 3.1 - Bracket; 3.2 - Clamping cylinder; 3.3 - Clamping arm; 3.4 - Flipping cylinder; 3.5 - Clamping plate; 3.6 - Winch; 3.7 - Installation table; 3.8 - Lifting hook; 3.9 - Connecting ear; 3.10 - Piston rod of the flipping cylinder; 3.11 - Horizontal connecting shaft; 3.12 - Connecting plate; 4 - Tire; 5 - Nitrogen cylinder; 6 - Wooden box for brake drum; 7 - Brake drum; 8 - Pneumatic control box; 9 - Joint brake. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with embodiments.

[0037] In the description of the present invention, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc. indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0038] In the description of the present invention, "several" means one or more, "multiple" means more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0040] Embodiment:

[0041] As Figures 1 to 9 shown is a boosting device for replacing the brake drum of an aircraft tire in this embodiment, which includes a transport vehicle 1, a boosting arm 2, and a side clamping fixture 3.

[0042] As Figure 2 shown, the transport vehicle 1 includes a vehicle frame 1.1, a rear wheel assembly 1.2, a front wheel assembly 1.4, and a hand-cranked support foot 1.3. The rear wheel assembly 1.2 and the front wheel assembly 1.4 are respectively arranged at the rear and front of the vehicle frame 1.1 for supporting walking, and both adopt conventional wheel structures, wherein the front wheel assembly 1.4 can be steered. Hand-cranked support feet 1.3 are respectively arranged at the four corners of the vehicle frame 1.1. The hand-cranked support feet 1.3 are conventional components, and the lifting of the support feet is adjusted by manually cranking. During use, after the transport vehicle moves into place, the support feet are lowered and supported on the ground by manually cranking, which can prevent the transport vehicle 1 from being moved during operation.

[0043] On the vehicle frame 1.1, there are provided a tire storage area 1.6, a wheel jack storage area 1.7, a brake drum wooden box storage area 1.5, and a boosting arm installation area 1.8. The tire storage area 1.6 is used to store new or replaced tires 4, the wheel jack storage area 1.7 is used to store wheel jacks, the brake drum wooden box storage area 1.5 is used to store brake drum wooden boxes 6, and the brake drum 7 is installed in the brake drum wooden box 6. The boosting arm 2 is installed on the boosting arm installation area 1.8 of the transport vehicle 1, and the boosting arm installation area 1.8 is located at the rear end of the transport vehicle 1. Of course, other tools required for replacing the brake drum of an aircraft tire can also be placed on the transport vehicle 1. In this embodiment, nitrogen cylinders 5 are provided on both sides of the front end of the transport vehicle 1, and the nitrogen cylinders 5 provide a gas source for pneumatic components.

[0044] Among them, the boosting arm 2 can be manually horizontally extended and folded to flexibly move the brake drum 7 to achieve the propulsion and removal of the brake drum 7. As Figure 5 and Figure 6As shown in the figure, the assisting arm 2 of this embodiment includes a base 2.1, a rotating vertical arm 2.2, an assisting cylinder 2.3, a quadrilateral arm 2.4, a middle joint 2.5 and a forearm 2.6. The base 2.1 is fixedly installed on the assisting arm installation area 1.8 of the transport vehicle 1. The lower end of the rotating vertical arm 2.2 is rotatably connected to the base 2.1, enabling the entire assisting arm 2 to rotate. The quadrilateral arm 2.4 includes an upper cross bar 2.7 and a lower cross bar 2.8 which are arranged parallel to each other up and down. The rear ends of the upper cross bar 2.7 and the lower cross bar 2.8 are respectively hinged to the upper end of the rotating vertical arm 2.2 through horizontal pin shafts, enabling the upper cross bar 2.7 and the lower cross bar 2.8 to rotate up and down relative to the upper end of the rotating vertical arm 2.2. The front ends of the upper cross bar 2.7 and the lower cross bar 2.8 are respectively hinged to the rear end of the middle joint 2.5 through horizontal pin shafts, enabling the upper cross bar 2.7 and the lower cross bar 2.8 to rotate up and down relative to the middle joint 2.5. By arranging the upper cross bar 2.7 and the lower cross bar 2.8 which are parallel to each other up and down, a parallelogram structure is formed. When adjusting the height of the middle joint 2.5 up and down, the horizontal state of the middle joint 2.5 can be maintained. A force - adding plate 2.10 extending backward is provided at the rear end of the upper cross bar 2.7. The assisting cylinder 2.3 is vertically installed on the rotating vertical arm 2.2. The lower end of the assisting cylinder 2.3 is hinged to the side of the rotating vertical arm 2.2. The piston rod 2.9 of the assisting cylinder faces upward, and the upper end of the piston rod 2.9 of the assisting cylinder is hinged to the force - adding plate 2.10. The assisting cylinder 2.3 can maintain the state of the quadrilateral arm 2.4. By adjusting the extension and shortening of the assisting cylinder 2.3, the height of the middle joint 2.5 can be adjusted within a certain range, that is, the height of the forearm 2.6 connected to the middle joint 2.5 and the side clamping fixture 3 connected to the forearm 2.6 is adjusted.

[0045] The rear end of the forearm 2.6 is rotatably connected to the middle joint 2.5 through a first vertical connecting shaft 2.11, enabling the forearm 2.6 to rotate horizontally relative to the middle joint 2.5.

[0046] As Figures 7 to 9 shown in the figure, the side clamping fixture 3 of this embodiment includes a bracket 3.1, a winch 3.6, two clamping arms 3.3, a sliding power mechanism, two clamping plates 3.5 and a flipping power mechanism. The sliding power mechanism includes a clamping cylinder 3.2, and the flipping power mechanism includes two flipping cylinders 3.4.

[0047] The upper end of the bracket 3.1 of the side clamping fixture 3 is rotatably connected to the front end of the front arm 2.6 through the second vertical connecting shaft 2.12, enabling the side clamping fixture 3 to rotate horizontally. Here, the front end of the front arm 2.6 is the movable end of the assisting arm 2. In this embodiment, pneumatic joint brakes 9 are respectively provided at the rotational connection of the rotating vertical arm 2.2 and the base 2.1, at the rotational connection of the front arm 2.6 and the middle joint 2.5, and at the rotational connection of the bracket 3.1 and the front arm 2.6. The joint brake 9 is a conventional component that can brake the rotation to lock the state of the assisting arm 2 and the rotation of the side clamping fixture 3.

[0048] An installation platform 3.7 extending forward is provided at the upper part of the bracket 3.1. The winch 3.6 is installed on the installation platform 3.7. A hook 3.8 is provided on the lifting rope of the winch 3.6. The winch 3.6 is used for lifting and lowering the brake drum 7. Two clamping arms 3.3 are arranged corresponding to each other on the left and right at the lower part of the bracket 3.1. The rear ends of the two clamping arms 3.3 are slidably connected to the bracket 3.1 through a conventional slide rail and slider structure, enabling the two clamping arms 3.3 to slide relatively left and right. The winch 3.6 and the two clamping arms 3.3 are on the same side, and the winch 3.6 is corresponding to the middle position between the two clamping arms 3.3.

[0049] The clamping cylinder 3.2 is horizontally arranged at the lower part of the bracket 3.1 and is located between the two clamping arms 3.3. The clamping cylinder 3.2 is a conventional cylinder with two piston rods that move synchronously in opposite directions. The two piston rods are respectively located at both ends. Connection ears 3.9 are provided on the upper surface of the rear ends of the clamping arms 3.3. The two piston rods of the clamping cylinder 3.2 are respectively connected to the connection ears 3.9 of the two clamping arms 3.3. The two clamping arms 3.3 can be synchronously driven to slide relatively by the clamping cylinder 3.2, and the brake drum 7 can be clamped by the mutual approach of the clamping cylinder 3.2 during use.

[0050] The clamping plate 3.5 is in an arc shape adapted to the outer arc surface of the brake drum 7, enabling the clamping plate 3.5 to better fit the outer surface of the brake drum 7 and stably clamp the brake drum 7. The two clamping plates 3.5 are respectively arranged at the front ends of the clamping arms 3.3. The clamping plate 3.5 is located inside the clamping arm 3.3. The middle part of the clamping plate 3.5 is rotationally connected to the front end of the clamping arm 3.3 through a horizontal connecting shaft 3.11, enabling the clamping plate 3.5 to flip. Radially extending connecting plates 3.12 are respectively fixedly connected to the outer ends of the horizontal connecting shaft 3.11. The two flipping cylinders 3.4 are respectively located above the two clamping arms 3.3. The rear ends of the flipping cylinders 3.4 are hinged to the upper surfaces of the clamping arms 3.3, enabling the flipping cylinders 3.4 to flip up and down relative to the clamping arms 3.3. The front ends of the piston rods 3.10 of the flipping cylinders are hinged to the connecting plates 3.12. The two flipping cylinders 3.4 are used to respectively drive the two clamping plates 3.5 to flip. During use, the clamping plate 3.5 can be driven to flip by 90 degrees through the extension and shortening of the flipping cylinder 3.4, so that the brake drum 7 clamped between the two clamping plates 3.5 can be flipped by 90 degrees.

[0051] Of course, for pneumatic components such as the boosting cylinder 2.3, the clamping cylinder 3.2, and the flipping cylinder 3.4, conventional air circuits and pneumatic control components will be correspondingly set. The pneumatic control components will also be correspondingly arranged in the air control box 8. In this embodiment, air control boxes 8 are respectively arranged on the boosting arm 2 and the side clamping fixture 3. The air source required for the pneumatic components to operate can be provided by the nitrogen cylinder 5 or the removed tire.

[0052] The usage process of the boosting device in this embodiment is as follows:

[0053] Load the necessary workpieces and tools for disassembling and assembling the brake drum 7 (new tires, new brake drums, brake drum wooden boxes, wheel jacks, wheel shovels, toolboxes, etc.) and the nitrogen cylinder 5 onto the transport vehicle 1 to the work site of the apron for replacing the brake drum 7. Connect the air inlet end of the air circuit to the air source (the removed tire or the nitrogen cylinder). Use the wheel jack to lift the aircraft tire for which the brake drum needs to be replaced, then remove the fixing bolts of the aircraft tire, remove the aircraft tire from the wheel axle of the aircraft landing gear, and put a protective cover on the wheel axle. Roll the replaced aircraft tire to a safe position beside, remove the fixing bolts and hydraulic hoses of the brake drum on the wheel axle, then manually extend the boosting arm 2, move the side clamping fixture 3, and adjust the height of the side clamping fixture 3 through the boosting cylinder 2.3. Finally, make the position of the side clamping fixture 3 correspond to the brake drum 7. The two clamping plates 3.5 are in a vertical state and are respectively located on both sides of the brake drum 7. Then control the clamping cylinder 3.2 to make the two clamping plates 3.5 clamp the brake drum 7. After that, move the boosting arm 2 to slowly remove the brake drum 7 from the wheel axle. At this time, if Figure 8As shown. Finally, move the brake drum 3.5 above the empty wooden box 6 for the brake drum. Control the tipping cylinder 3.4 to tip the clamping plate 3.5 together with the brake drum 7 clamped between the two clamping plates 3.5 by ninety degrees. Then, hook the hook 3.8 of the winch 3.6 to the middle of the brake drum 7. At this time, as Figure 9 shown. Then, control the clamping cylinder 3.4 to release the brake drum 7 from the clamping plate 3.5. Then, control the winch 3.6 to slowly lower the brake drum 7 and finally place the removed brake drum 7 into the wooden box 6 for the brake drum, and disconnect the connection between the hook 3.8 and the brake drum 7. Operate the power arm 2 to move the side clamping fixture 3 above the new brake drum. At this time, the two clamping plates 3.5 are in a horizontal state. Lift the new brake drum by the winch 3.6 and raise it between the two clamping plates 3.5. Then, control the clamping cylinder 3.2 to clamp the new brake drum with the two clamping plates 3.5. Then, disconnect the connection between the hook 3.8 and the new brake drum. Control the tipping cylinder 3.4 to tip the clamping plate 3.5 together with the new brake drum clamped between the two clamping plates by ninety degrees. Move the power arm 2 to move the new brake drum to the position corresponding to the axle and slowly push the new brake drum into the axle. Control the clamping cylinder 3.2 to release the new brake drum. Then, reconnect the brake drum fixing bolts and the hydraulic hoses, remove the axle protective sleeve, use the tire-changing shovel to push the new tire into the axle and fix it. Roll the replaced old tire onto the transport vehicle 1 to complete the installation, and fold the power arm 2 back above the transport vehicle 1.

[0054] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited to this. All these, based on the above content of the present invention, according to the common general knowledge and conventional means in the art, without departing from the above basic technical idea of the present invention, various other forms of modification, replacement or change made to the above structure of the present invention shall fall within the protection scope of the present invention.

Claims

1. A power assist device for replacing aircraft tire brake drums, characterized in that: It includes a transport vehicle, a power-assisting arm and a side clamp, wherein the power-assisting arm is installed on the transport vehicle, the power-assisting arm can be manually extended and folded horizontally, and the side clamp is arranged at the movable end of the power-assisting arm; the side clamp includes a bracket, a winch, two clamping arms, a sliding power mechanism, two clamping plates and a flipping power mechanism, the winch is arranged at the upper part of the bracket, and is used for lifting and lowering the brake drum, the two clamping arms are arranged at the lower part of the bracket so as to be able to slide relative to each other, the sliding power mechanism is arranged at the lower part of the bracket and is respectively connected to the two clamping arms, and can drive the two clamping arms to slide relative to each other, the two clamping plates are respectively arranged at the front ends of the clamping arms, the clamping plates can be flipped, and the flipping power mechanism is arranged on the clamping arms, and is used for driving the clamping plates to flip.

2. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: The boost arm includes a base, a rotating vertical arm, a boost cylinder, a quadrilateral arm, a middle joint and a forearm. The base is fixedly installed on the transport vehicle, the lower end of the rotating vertical arm is rotatably connected to the base, the rear end of the quadrilateral arm is hinged to the upper end of the rotating vertical arm, and a force plate is extended backward from the rear end of the quadrilateral arm. The boost cylinder is vertically installed on the rotating vertical arm, the lower end of the boost cylinder is hinged to the rotating vertical arm, the upper end of the piston rod of the boost cylinder is hinged to the force plate, the front end of the quadrilateral arm is hinged to the middle joint, the rear end of the forearm is rotatably connected to the middle joint, the forearm can rotate horizontally relative to the middle joint, and the upper end of the bracket of the side clamp is rotatably connected to the front end of the forearm.

3. The power assist device for replacing aircraft tire brake drum according to claim 2, characterized in that: The quadrilateral arm comprises an upper crossbar and a lower crossbar which are arranged in parallel up and down, the rear ends of the upper crossbar and the lower crossbar are respectively hinged to the upper end of the rotating vertical arm, the front ends of the upper crossbar and the lower crossbar are respectively hinged to the middle joint, and the force plate is arranged at the rear end of the upper crossbar.

4. The power assist device for replacing aircraft tire brake drum according to claim 2, characterized in that: The rotation connection between the rotating upright arm and the base, the rotation connection between the forearm and the middle joint, and the rotation connection between the bracket and the forearm are respectively provided with joint brakes for braking the rotation.

5. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: The sliding power mechanism comprises a clamping cylinder, which is horizontally arranged at the lower part of the bracket and located between the two clamping arms. The clamping cylinder has two piston rods that move synchronously in opposite directions, and the piston rods of the clamping cylinder are connected to the clamping arms.

6. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: The middle part of the clamp plate is rotatably connected to the front end of the clamp arm through a horizontal connecting shaft, and the flipping power mechanism includes two flipping cylinders, which are respectively located on the two clamp arms, and the rear ends of the flipping cylinders are hinged to the clamp arms. The two flipping cylinders are used to drive the two clamp plates to flip respectively, and a radially extending connecting plate is fixedly connected to the horizontal connecting shaft, and the front end of the piston rod of the flipping cylinder is hinged to the connecting plate.

7. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: The clamping plate is in an arc shape.

8. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: The upper part of the bracket is provided with a mounting platform extending forward, the hoist is installed on the mounting platform, and a hook is provided on the hoisting rope of the hoist.

9. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: The transport vehicle is provided with a tire storage area, a wheel jack storage area, a brake drum wooden box storage area and a booster arm installation area, and the booster arm is installed on the booster arm installation area of ​​the transport vehicle.

10. The power assist device for replacing aircraft tire brake drum according to claim 1, characterized in that: Nitrogen cylinders are provided on both sides of the front end of the transport vehicle.

Images