Hydraulic lifting trolley for replacing airplane wheel brake

Abstract

The hydraulic lifting trolley for replacing the airplane wheel brake comprises a U-shaped trolley body, a bent supporting plate is fixed to the middle of the top of the U-shaped trolley body, stand columns are symmetrically fixed to the top of the U-shaped trolley body, and a machine wheel supporting frame is installed on the stand columns in a sliding mode through a pulley mechanism. A machine wheel rotating cylinder is rotationally installed on the front end face of the machine wheel supporting frame through a horizontal shaft, and a lifting power device is installed between the machine wheel supporting frame and the bending supporting plate. The trolley can be used for airplane wheel lifting operation in the airplane wheel brake dismounting process and can rotationally support airplane wheels, and it is guaranteed that the airplane wheels can rotate; and meanwhile, a movable structure is adopted, so that the whole device can be conveniently moved to the position of the airplane wheel, and the use flexibility is further enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft maintenance tools, specifically a hydraulic lifting trolley for replacing aircraft wheel brakes. Background Technology

[0002] During aircraft wheel brake replacement, the wheel needs to be lifted and supported at a certain height to ensure normal rotation during brake removal. Current replacement procedures primarily involve workers manually moving jacks to the site to lift the wheel. This process is time-consuming, labor-intensive, and inflexible, resulting in high worker fatigue. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a hydraulic lifting trolley for replacing aircraft wheel brakes. This trolley can be used for lifting the aircraft wheel during the disassembly process of the aircraft wheel brake, and can also provide rotational support for the aircraft wheel to ensure that the aircraft wheel can rotate. At the same time, it adopts a mobile structure, which can easily move the entire device to the location of the aircraft wheel, thereby enhancing the flexibility of use.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: a hydraulic lifting trolley for replacing aircraft wheel brakes includes a U-shaped body, a bent support plate fixed at the top middle part of the U-shaped body, columns symmetrically fixed at the top of the U-shaped body, a wheel support frame slidably installed on the columns via a pulley mechanism, a wheel drum rotatably installed on the front end face of the wheel support frame via a horizontal shaft, and a lifting power device installed between the wheel support frame and the bent support plate.

[0005] The head of the U-shaped vehicle body is fixed with head wheel mounting plates at both ends. A head wheel is fixedly mounted at the bottom end of the head wheel mounting plates. A cylinder is fixed at the top end of the tail of the bending support plate. A vertical shaft is rotatably mounted inside the cylinder. A tail wheel frame is rotatably mounted at the bottom end of the vertical shaft and at the bottom end of the bending support plate. A tail wheel is mounted at the bottom end of the tail wheel frame.

[0006] The head wheel is fixedly connected to the head wheel mounting plate by multiple set bolts;

[0007] A first inclined reinforcing plate is provided between the bending support plate and the outer wall of the U-shaped vehicle body.

[0008] A rotating handle is fixed to the top of the vertical shaft;

[0009] A thrust ball bearing is provided between the tail wheel frame and the bending support plate.

[0010] A top beam is fixed between the tops of the columns.

[0011] The wheel support frame includes a pair of wheel frame columns, an upper connecting beam is fixed between the upper parts of the wheel frame columns, a lower connecting beam is fixed on the lower outer wall of the wheel frame columns, and the horizontal shaft is fixed on the outer wall of the lower connecting beam.

[0012] The pulley mechanism includes an upper pulley frame fixed between the upper parts of the wheel frame columns. The end of the upper pulley frame is equipped with an upper roller for rolling cooperation with the outer wall of the column via a wheel axle. The upper pulley frames are fixed with upper connecting bolts. The lower part of the wheel frame columns is equipped with a lower pulley frame via a lower roller. The lower roller is rolled and supported on the outer wall of the column. The lower roller and the upper roller are arranged in a bidirectional staggered manner.

[0013] The lifting power device includes a manual jack fixed to the top of the bending support plate. The top of the piston rod of the manual jack is in contact with the bottom of the upper connecting beam. The manual jack is connected to a manual pump, and the manual pump is equipped with a manual operating lever.

[0014] A second inclined reinforcing plate is provided between the column and the U-shaped vehicle body.

[0015] The present invention has the following beneficial effects:

[0016] 1. The trolley of this utility model can be used for lifting the aircraft wheel during the disassembly of the aircraft wheel brake, and can also provide rotational support for the aircraft wheel to ensure that the aircraft wheel can rotate; at the same time, the mobile structure can easily move the entire device to the location of the aircraft wheel, thereby enhancing the flexibility of use.

[0017] 2. The head wheel and tail wheel mentioned above ensure the movement of the trolley.

[0018] 3. The first inclined reinforcing plate mentioned above enhances the reliability of the fixed installation of the bending support plate.

[0019] 4. The aforementioned rotating handle ensures that the vertical shaft can be rotated, thereby facilitating subsequent control of the trolley's movement direction.

[0020] 5. The thrust ball bearings mentioned above ensure that the vertical shaft can smoothly drive the tail wheel frame to rotate, and ensure that it can withstand a large axial force while rotating.

[0021] 6. The aforementioned wheel support frame facilitates stable and reliable rotational support for the wheels.

[0022] 7. The pulley mechanism described above ensures that the wheel support frame can smoothly slide up and down on the column, thereby adjusting the support height of the wheel.

[0023] 8. The above-mentioned lifting power device can be used to provide lifting power.

[0024] 9. The reliability of the fixed installation of the column can be enhanced by the second inclined reinforcing plate mentioned above. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a first-person perspective 3D view of the present invention.

[0027] Figure 2 This is a two-dimensional view of the present invention from a second perspective.

[0028] Figure 3 This is a three-dimensional view of the present invention from a third perspective.

[0029] Figure 4 This is a four-dimensional view of the present invention.

[0030] Figure 5 This is the front view of the present utility model.

[0031] In the diagram: 1. Tail wheel; 2. Tail wheel frame; 3. Thrust ball bearing; 4. Bending support plate; 5. Cylinder body; 6. U-shaped body; 7. Column; 8. Vertical shaft; 9. Rotating handle; 10. Lower roller; 11. Lower pulley frame; 12. Wheel axle; 13. Upper roller; 14. Upper pulley frame; 15. Wheel frame column; 16. Top crossbeam; 17. Upper connecting beam; 18. Piston rod; 19. Manual jack; 20. Machine wheel drum; 21. Horizontal shaft; 22. Upper connecting bolt; 23. Second inclined reinforcing plate; 24. Manual pump; 25. Manual operating lever; 26. First inclined reinforcing plate; 27. Head wheel mounting plate; 28. Head wheel; 29. ​​Lower connecting beam; 30. Set bolt. Detailed Implementation

[0032] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0033] Example 1:

[0034] See Figure 1-5The aircraft wheel brake replacement hydraulic lifting trolley includes a U-shaped body 6. A bent support plate 4 is fixed to the middle of the top of the U-shaped body 6. Columns 7 are symmetrically fixed to the top of the U-shaped body 6. A wheel support frame is slidably mounted on the column 7 via a pulley mechanism. A wheel drum 20 is rotatably mounted on the front end of the wheel support frame via a horizontal shaft 21. A lifting power device is installed between the wheel support frame and the bent support plate 4. This trolley can be used to lift the aircraft wheel during the removal of the aircraft wheel brake, and can also provide rotational support to ensure the wheel can rotate. Its mobile structure allows for easy movement of the entire device to the wheel's location, enhancing its flexibility. In practical use, the trolley is moved to the wheel's location, the wheel is supported on top of the wheel drum 20, and the lifting power device controls the lifting of the wheel support frame and the wheel drum 20, thereby lifting the wheel and ensuring smooth rotation during brake removal.

[0035] Furthermore, head wheel mounting plates 27 are fixed to both ends of the head of the U-shaped vehicle body 6, and head wheels 28 are fixedly mounted at the bottom of the head wheel mounting plates 27. A cylinder 5 is fixed to the top of the tail of the bent support plate 4, and a vertical shaft 8 is rotatably mounted inside the cylinder 5. A tail wheel frame 2 is rotatably mounted at the bottom of the vertical shaft 8, which is located at the bottom of the bent support plate 4, and a tail wheel 1 is mounted at the bottom of the tail wheel frame 2. The head wheels 28 and the tail wheel 1 ensure the movement of the vehicle.

[0036] Furthermore, the head wheel 28 is fixedly connected to the head wheel mounting plate 27 by a plurality of set bolts 30; the set bolts 30 ensure the reliable fixation of the head wheel 28.

[0037] Furthermore, a first inclined reinforcing plate 26 is provided between the bending support plate 4 and the outer wall of the U-shaped vehicle body 6. The first inclined reinforcing plate 26 enhances the reliability of the fixed installation of the bending support plate 4.

[0038] Furthermore, a rotating handle 9 is fixed to the top of the vertical shaft 8. The rotating handle 9 ensures that the vertical shaft 8 can be rotated, thereby facilitating subsequent control of the trolley's movement direction.

[0039] Furthermore, a thrust ball bearing 3 is provided between the tail wheel frame 2 and the bending support plate 4. The thrust ball bearing 3 ensures that the vertical shaft 8 can smoothly drive the tail wheel frame 2 to rotate, and ensures that it can withstand a large axial force while rotating.

[0040] Furthermore, a top crossbeam 16 is fixed between the top ends of the columns 7. The top crossbeam 16 connects the columns 7 into a whole structure, thereby ensuring the stability and reliability of the columns 7.

[0041] Furthermore, the wheel support frame includes paired wheel frame columns 15, with an upper connecting beam 17 fixed between the upper parts of the wheel frame columns 15, and a lower connecting beam 29 fixed on the lower outer wall of the wheel frame columns 15. The horizontal shaft 21 is fixed to the outer wall of the lower connecting beam 29. This wheel support frame facilitates stable and reliable rotational support for the wheel. In actual operation, the wheel support frame provides overall support for the wheel and allows it to be raised and lowered to a certain height, thus supporting the wheel on the top of the wheel drum 20, ensuring that the wheel can rotate on the wheel drum 20.

[0042] Furthermore, the pulley mechanism includes an upper pulley frame 14 fixed between the upper parts of the wheel frame columns 15. An upper roller 13, for rolling engagement with the outer wall of the column 7, is mounted at the end of the upper pulley frame 14 via a wheel axle 12. Upper connecting bolts 22 are fixed between the upper pulley frames 14. A lower roller 10 is mounted at the lower part of the wheel frame columns 15 via a lower pulley frame 11. The lower roller 10 rolls and supports the outer wall of the column 7. The lower roller 10 and the upper roller 13 are arranged in a bidirectional staggered pattern. This pulley mechanism ensures that the wheel support frame can smoothly slide up and down on the column 7, thereby adjusting the support height of the wheel.

[0043] Furthermore, the lifting power device includes a manual jack 19 fixed to the top of the bent support plate 4. The top of the piston rod 18 of the manual jack 19 contacts and engages with the bottom end of the upper connecting beam 17. The manual jack 19 is connected to a manual pump 24, and a manual operating lever 25 is provided on the manual pump 24. This lifting power device provides lifting power. During operation, when the height of the wheel support frame needs to be adjusted, the manual operating lever 25 drives the manual pump 24, which in turn drives the manual jack 19, which in turn drives the wheel support frame to lift along the wheel frame column 15.

[0044] Furthermore, a second inclined reinforcing plate 23 is provided between the column 7 and the U-shaped vehicle body 6. The second inclined reinforcing plate 23 enhances the reliability of the fixed installation of the column 7.

[0045] The working process and principle of this utility model:

[0046] When it is necessary to remove the brakes from the aircraft wheels, the trolley is moved to the position to be removed, and then the wheels are supported on top of the wheel drum 20. The manual pump 24 is driven by the manual operating lever 25, which in turn drives the manual jack 19. The manual jack 19 then drives the wheel support frame along the wheel frame column 15. At this time, the wheel support frame will synchronously drive the wheel drum 20 to rise and fall, thereby lifting the wheels and ensuring their smooth rotation during the brake removal process.

Claims

1. A hydraulic lifting trolley for replacing aircraft wheel brakes, characterized in that, The vehicle includes a U-shaped body (6), a bent support plate (4) is fixed at the middle of the top of the U-shaped body (6), and columns (7) are symmetrically fixed at the top of the U-shaped body (6). A wheel support frame is slidably installed on the column (7) through a pulley mechanism. A wheel drum (20) is rotatably installed on the front end face of the wheel support frame through a horizontal shaft (21). A lifting power device is installed between the wheel support frame and the bent support plate (4).

2. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 1, characterized in that: The head wheel mounting plates (27) are fixed at both ends of the head of the U-shaped vehicle body (6), and the head wheel (28) is fixedly installed at the bottom end of the head wheel mounting plate (27). The cylinder (5) is fixed at the top end of the tail of the bent support plate (4). The vertical shaft (8) is rotatably installed inside the cylinder (5). The tail wheel frame (2) is rotatably installed at the bottom end of the vertical shaft (8) and at the bottom end of the bent support plate (4). The tail wheel (1) is installed at the bottom end of the tail wheel frame (2).

3. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 2, characterized in that: The head wheel (28) is fixedly connected to the head wheel mounting plate (27) by a plurality of set bolts (30); A first inclined reinforcing plate (26) is provided between the bending support plate (4) and the outer wall of the U-shaped vehicle body (6).

4. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 2, characterized in that: A rotating handle (9) is fixed to the top of the vertical shaft (8). A thrust ball bearing (3) is provided between the tail wheel frame (2) and the bending support plate (4).

5. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 1, characterized in that: A top beam (16) is fixed between the top ends of the columns (7).

6. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 1, characterized in that: The wheel support frame includes a pair of wheel frame columns (15), an upper connecting beam (17) is fixed between the upper parts of the wheel frame columns (15), a lower connecting beam (29) is fixed on the lower outer wall of the wheel frame columns (15), and the horizontal shaft (21) is fixed on the outer wall of the lower connecting beam (29).

7. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 6, characterized in that: The pulley mechanism includes an upper pulley frame (14) fixed between the upper parts of the wheel frame column (15). The end of the upper pulley frame (14) is equipped with an upper roller (13) for rolling cooperation with the outer wall of the column (7) via a wheel axle (12). An upper connecting bolt (22) is fixed between the upper pulley frames (14). A lower roller (10) is installed at the lower part of the wheel frame column (15) via a lower pulley frame (11). The lower roller (10) is rolled and supported on the outer wall of the column (7). The lower roller (10) and the upper roller (13) are arranged in a bidirectional staggered manner.

8. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 6, characterized in that: The lifting power device includes a manual jack (19) fixed to the top of the bent support plate (4). The top of the piston rod (18) of the manual jack (19) is in contact with the bottom of the upper connecting beam (17). The manual jack (19) is connected to the manual pump (24). The manual pump (24) is equipped with a manual operating lever (25).

9. The hydraulic lifting trolley for replacing aircraft wheel brakes according to claim 6, characterized in that: A second inclined reinforcing plate (23) is provided between the column (7) and the U-shaped vehicle body (6).

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