Tool structure for quickly disassembling bearing in hub of airplane

Abstract

The utility model relates to the technical field of aircraft accessory maintenance, in particular to a tool structure for quickly disassembling an inner bearing of an aircraft hub, which comprises a drawing rod, a first end of the drawing rod is provided with a guide disc, a second end of the drawing rod is provided with a limiting disc, and one side of the guide disc far away from the drawing rod is provided with a connecting block; the limiting block is connected to the connecting block; the limiting block comprises a first connecting block and a second connecting block. According to the bearing disassembling tool, the drawing rod and the limiting block are designed to be separated, the limiting block is arranged to be of two split structures, the structure is beneficial to being installed at the front end of the drawing rod from a hub inner hole with the smaller hole diameter, a bearing is pulled and disassembled, meanwhile, the guide disc is arranged at the front end of the drawing rod and can be attached to the hole wall of the inner hole of the bearing, and therefore the bearing disassembling efficiency is improved. The wheel hub pulling device plays a guiding role during pulling, prevents pulling deviation, and can effectively protect the inner wall of a wheel hub during bearing dismounting so as to reduce damage.

Description

Technical Field

[0001] This utility model relates to the field of aircraft parts repair technology, and more specifically to a tooling structure for quick disassembly of bearings inside aircraft wheel hubs. Background Technology

[0002] The disassembly and assembly of bearings inside aircraft wheel hubs is a complex and delicate process. Specialized disassembly tools, such as pullers and pressing tools, are usually used when disassembling bearings inside aircraft wheel hubs to ensure the accuracy and safety of the disassembly process.

[0003] For conventional wheel hubs, the limiting block used at the front end of the puller is an integral structure. After the front end of the puller is inserted into the inner hole of the bearing, the limiting block is then connected to the front end of the puller, allowing the bearing to be disassembled. However, some wheel hubs have small diameter holes at both ends of the shaft hole, making it impossible to install the limiting block onto the front end of the puller. If the ejection method is used, the tooling is not easily positioned correctly in the inner hole, which can lead to scratches and damage to the inner hole. Furthermore, wheel hubs are valuable, and this method can easily damage the wheel hub itself, causing potential cracks and defects, and also poses a safety hazard that could lead to aviation accidents. Utility Model Content

[0004] To address the technical problems existing in the bearing disassembly fixtures of the prior art, this utility model proposes a fixture structure for quick disassembly of bearings inside aircraft wheel hubs, comprising:

[0005] A pull rod has a guide plate at one end and a limiting plate at the other end. A connecting block is provided on the side of the guide plate away from the pull rod.

[0006] A limiting block is connected to the connecting block;

[0007] The limiting block includes a first connecting block and a second connecting block. The connecting block has a first end face and a second end face that are parallel to each other. The first connecting block is detachably connected to the first end face through a connecting component, and the second connecting block is detachably connected to the second end face through a connecting component.

[0008] After the first connecting block and the second connecting block are connected to the connecting block, the outer circle of the cross section along the axis of the pull rod is larger than the outer contour of the guide disk. The outer contour of the guide disk is clearance-fitted with the inner hole of the bearing. The width of the first connecting block or the second connecting block is smaller than the diameter of the guide disk.

[0009] Preferably, the connecting block is provided with a limiting shaft, the limiting shaft having an exposed portion extending above the first end face and the second end face, and the first connecting block and the second connecting block can be installed on the first end face or the second end face along the axial direction of the limiting shaft.

[0010] Preferably, the first connecting block and the second connecting block have the same structure.

[0011] Preferably, both the first connecting block and the second connecting block include a mounting plate and a limiting plate. The limiting plate and the mounting plate are perpendicular. The mounting plate is provided with an insertion hole. When the mounting plate is placed on the first end face or the second end face, the limiting shaft can pass through the insertion hole, and the limiting plate is in contact with the guide plate.

[0012] Preferably, a reinforcing rib is provided between the mounting plate and the limiting plate.

[0013] Preferably, there are two limiting shafts, located on both sides of the reinforcing rib.

[0014] Preferably, the axial direction of the limiting shaft is perpendicular to the axial direction of the pulling rod.

[0015] Preferably, the exposed portion is provided with a slot, and the slot is exposed when the first connecting block or the second connecting block is sleeved onto the outer wall of the limiting shaft. The connecting component includes a shaft retaining ring, which can be engaged in the slot along the axial direction of the pull rod, so that the first connecting block or the second connecting block is fixed to the first end face or the second end face of the connecting block.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] The bearing disassembly fixture proposed in this utility model features a design that separates the pull rod and the limiting block. The limiting block is configured as two separate structures. This structure facilitates installation of the pull rod into the front end of the hub bore, which has a smaller diameter, to pull and disassemble the bearing. At the same time, a guide plate is provided at the front end of the pull rod, which can fit against the inner wall of the bearing bore and play a guiding role during pulling, preventing deviation and effectively protecting the inner wall of the hub during bearing disassembly to reduce damage. Attached Figure Description

[0018] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the tooling structure for quick disassembly of the aircraft hub bearing shown in this utility model.

[0020] Figure 2 This is a front view of the limiting block installed after the connecting block is connected, as shown in this utility model.

[0021] Figure 3This is a side view of the limiting block installed after the connecting block, as shown in this utility model;

[0022] Figure 4 This is a top view of the limiting block installed after the connecting block, as shown in this utility model. Detailed Implementation

[0023] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0024] Combination Figure 1 As shown, this utility model proposes a tooling structure for quick disassembly of an aircraft wheel hub bearing, including a pull rod 10 and a limiting block.

[0025] The first end of the pull rod 10 is provided with a guide plate 11, the second end of the pull rod 10 is provided with a limiting plate 12, and the guide plate 11 is provided with a connecting block 13 on the side away from the pull rod 10. The limiting block is connected to the connecting block 13.

[0026] The limiting block and the connecting block 13 are designed to be detachably connected, and the limiting block is a split design, which is conducive to installing the connecting block 13 from the smaller shaft hole and removing the outer ring of the bearing.

[0027] Combination Figure 1 and Figure 2 As shown, the limiting block includes a first connecting block 21 and a second connecting block 22. The connecting block 13 has a first end face and a second end face that are parallel to each other. The first connecting block 21 is detachably connected to the first end face through a connecting member 30, and the second connecting block 22 is detachably connected to the second end face through a connecting member 30.

[0028] Due to the split design of the first connecting block 21 and the second connecting block 22, the volume of the first connecting block 21 and the second connecting block 22 is smaller than the inner diameter of the bearing or hub shaft hole. When the connecting block 13 at the front end of the pull rod 10 moves from one side of the bearing to the other side, the first connecting block 21 and the second connecting block 22 can be installed on the upper and lower end faces of the connecting block 13 respectively.

[0029] Specifically, after the first connecting block 21 and the second connecting block 22 are connected to the connecting block 13, the outer circle of the cross section along the axis of the pull rod 10 is larger than the outer contour of the guide disk 11. The outer contour of the guide disk 11 is clearance-fitted with the inner hole of the bearing. The width of the first connecting block 21 or the second connecting block 22 is smaller than the diameter of the guide disk 11.

[0030] Thus, when the first connecting block 21 and the second connecting block 22 are connected, the outer wall of the guide plate 11 is in contact with the inner wall of the bearing inner ring, and the sides of the first connecting block 21 and the second connecting block 22 abut against the side wall of the bearing. It should be understood that one end of the pull rod 10 can be connected to the pull device or the pull rod 10 is provided with a striking block, which causes the bearing to be gradually removed by impacting one side of the limiting plate 12.

[0031] Combination Figure 2 As shown, the connecting block 13 is provided with a limiting shaft 14. The axial direction of the limiting shaft 14 is perpendicular to the axial direction of the pull rod 10. The limiting shaft 14 has an exposed portion 141 extending above the first end face and the second end face. The first connecting block 21 and the second connecting block 22 can be installed on the first end face or the second end face along the axial direction of the limiting shaft 14.

[0032] Thus, when disassembling the bearing, the force direction of the first connecting block 21 and the second connecting block 22 is along the axial direction of the pull rod 10. The limiting shaft 14, which is set perpendicular to the axial direction of the pull rod 10, can limit the first connecting block 21 and the second connecting block 22.

[0033] In an optional embodiment, the first connecting block 21 and the second connecting block 22 have the same structure.

[0034] Combination Figures 2 to 4 As shown, both the first connecting block 21 and the second connecting block 22 include a mounting plate 203 and a limiting plate 201. The limiting plate 201 and the mounting plate 203 are perpendicular. The mounting plate 203 is provided with an insertion hole. When the mounting plate 203 is placed on the first end face or the second end face, the limiting shaft 14 can pass through the insertion hole, and the limiting plate 201 is in contact with the guide plate 11.

[0035] Furthermore, a slot is provided in the exposed portion 141, and the slot is exposed when the first connecting block 21 or the second connecting block 22 is sleeved onto the outer wall of the limiting shaft 14. The connecting component 30 includes a shaft retaining ring, which can be locked in the slot along the axial direction of the pull rod 10, so that the first connecting block 21 or the second connecting block 22 is fixed to the first end face or the second end face of the connecting block 13.

[0036] Specifically, during installation, one end of the connecting block 13 of the pull rod 10 is inserted into the inner hole of the bearing and passes through the bearing. From the other end of the hub, the first connecting block 21 or the second connecting block 22 is fitted onto the outer wall of the limiting shaft 14 along the axial direction of the limiting shaft 14, exposing the slot of the limiting shaft 14. Then, the shaft retaining ring is inserted into the slot of the limiting shaft 14 to restrict the movement of the first connecting block 21 or the second connecting block 22 along the axial direction of the limiting shaft 14. At this time, pulling the pull rod 10 outward can pull out the bearing. And because it is in contact with the inner wall of the bearing by the guide plate 11, it can ensure that the direction of the force during pulling is parallel to the axial direction of the bearing, and will not cause damage to the inner wall of the hub.

[0037] In an optional embodiment, a reinforcing rib 202 is provided between the mounting plate 203 and the limiting plate 201. The reinforcing rib 202 increases the strength of the limiting plate 201, providing greater load-bearing capacity.

[0038] Furthermore, two limiting shafts 14 are provided, located on both sides of the reinforcing rib 202 respectively. By increasing the number of limiting shafts 14, the reliability of fixing the first connecting block 21 or the second connecting block 22 can be ensured, and the first connecting block 21 or the second connecting block 22 will not detach from the connecting block 13 when the bearing is disassembled.

[0039] In conjunction with the above embodiments, the bearing disassembly fixture proposed by this utility model features a design that separates the pull rod and the limiting block. The limiting block is configured as two separate structures. This structure facilitates installation from the inner bore of the hub, which has a smaller diameter, onto the front end of the pull rod for pulling and disassembling the bearing. At the same time, a guide plate is provided at the front end of the pull rod, which can fit against the inner wall of the bearing bore and play a guiding role during pulling, preventing deviation and effectively protecting the inner wall of the hub during bearing disassembly to reduce damage.

[0040] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A tooling structure for quick disassembly of an aircraft wheel hub internal bearing, characterized in that, include: The pull rod (10) has a guide plate (11) at the first end and a limiting plate (12) at the second end. A connecting block (13) is provided on the side of the guide plate (11) away from the pull rod (10). A limiting block is connected to the connecting block (13); The limiting block includes a first connecting block (21) and a second connecting block (22). The connecting block (13) has a first end face and a second end face that are parallel to each other. The first connecting block (21) is detachably connected to the first end face through a connecting component (30), and the second connecting block (22) is detachably connected to the second end face through a connecting component (30). After the first connecting block (21) and the second connecting block (22) are connected to the connecting block (13), the outer circle of the cross section along the axis of the pull rod (10) is larger than the outer contour of the guide disk (11). The outer contour of the guide disk (11) is clearance-fitted with the inner hole of the bearing. The width of the first connecting block (21) or the second connecting block (22) is smaller than the diameter of the guide disk (11).

2. The tooling structure for quick disassembly of the aircraft wheel hub bearing according to claim 1, characterized in that, The connecting block (13) is provided with a limiting shaft (14), the limiting shaft (14) has an exposed portion (141) extending above the first end face and the second end face, and the first connecting block (21) and the second connecting block (22) can be installed on the first end face or the second end face along the axial direction of the limiting shaft (14).

3. The tooling structure for quick disassembly of the aircraft wheel hub bearing according to claim 2, characterized in that, The first connecting block (21) and the second connecting block (22) have the same structure.

4. The tooling structure for quick disassembly of the aircraft wheel hub bearing according to claim 3, characterized in that, The first connecting block (21) and the second connecting block (22) both include a mounting plate (203) and a limiting plate (201). The limiting plate (201) and the mounting plate (203) are perpendicular. The mounting plate (203) is provided with an insertion hole. When the mounting plate (203) is placed on the first end face or the second end face, the limiting shaft (14) can pass through the insertion hole. The limiting plate (201) is in contact with the guide plate (11).

5. The tooling structure for quick disassembly of the aircraft wheel hub bearing according to claim 4, characterized in that, A reinforcing rib (202) is provided between the mounting plate (203) and the limiting plate (201).

6. The tooling structure for quick disassembly of the aircraft wheel hub bearing according to claim 5, characterized in that, Two limiting shafts (14) are provided, located on both sides of the reinforcing rib (202).

7. The tooling structure for quick disassembly of the aircraft wheel hub inner bearing according to any one of claims 2-6, characterized in that, The axial direction of the limiting shaft (14) is perpendicular to the axial direction of the pull rod (10).

8. The tooling structure for quick disassembly of the aircraft wheel hub bearing according to claim 7, characterized in that, The exposed portion (141) is provided with a slot, and when the first connecting block (21) or the second connecting block (22) is sleeved onto the outer wall of the limiting shaft (14), the slot is exposed. The connecting component (30) includes a shaft retaining ring, which can be locked in the slot along the axial direction of the pull rod (10), so that the first connecting block (21) or the second connecting block (22) is fixed to the first end face or the second end face of the connecting block (13).

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