Keel beam bearing bush installation tool

Abstract

The utility model relates to a keel beam bearing bush installation tool. The installation tool comprises a pressing pull rod, a first cover plate, a first coaxial guarantee block, a cushion block, a second coaxial guarantee block, a second cover plate and a pressing nut, and the pressing pull rod sequentially penetrates through the first cover plate, the first coaxial guarantee block, the cushion block, the second coaxial guarantee block, the second cover plate and the pressing nut. The diameter of the first coaxial guarantee block and the diameter of the second coaxial guarantee block are equal to the diameter of a preset hole in the inner wall of an aircraft body, a first through hole is formed in the middle of the cushion block, and the diameter of the first through hole is larger than that of a to-be-treated bearing bush. Compared with the prior art, the tool has the advantages that the installation success rate and the installation efficiency of the keel beam bearing bush are improved, and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to aircraft parts installation technical field especially is a keel beam bearing bush installation tool. BACKGROUND

[0002] At present, the bearing bush installation method of A320 landing gear keel beam includes: using wooden hammer, rubber hammer left and right up and down knock extrusion bearing bush head, knock or extrusion bearing bush to the preset position of aircraft keel beam. However, the head of bearing bush is prone to damage in the process of knocking, and in the process of knocking, the bearing bush is unevenly stressed during approach, which can easily lead to installation failure and low efficiency. SUMMARY

[0003] The utility model discloses a keel beam bearing bush installation tool, which can overcome the defects of low installation success rate and low installation efficiency of the prior art.

[0004] The purpose of the utility model can be realized by the following technical scheme:

[0005] The utility model provides a keel beam bearing bush installation tool, including pressure pull rod, first cover, first coaxial guarantee block, cushion block, second coaxial guarantee block, second cover and pressure nut, the pressure pull rod is sequentially penetrated in first cover first coaxial guarantee block cushion block second coaxial guarantee block second cover and pressure nut, the diameter of first coaxial guarantee block and second coaxial guarantee block is the hole size of the inner wall of the preset hole of aircraft body, the middle part of cushion block is equipped with first through -hole, and the diameter of first through -hole is greater than the diameter of the bearing bush to be handled.

[0006] As a preferred technical scheme, the pressure pull rod is an integral forming piece, including nut head, light pole section and thread section connected in sequence, the first cover, the first coaxial guarantee block, the cushion block, the second coaxial guarantee block, the second cover are sequentially set in the light pole section and the thread section, and the pressure nut is screwed with the thread section.

[0007] As a preferred technical scheme, the nut head is a hexagonal nut head.

[0008] As a preferred technical scheme, the other side of the nut head is fixedly connected with the clamping element, and the clamping element is used for clamping and fixing the installation tool during the installation of the bearing bush.

[0009] As a preferred technical scheme, the height of the first coaxial guarantee block and the second coaxial guarantee block is the depth of the preset hole of the inner wall of the aircraft body.

[0010] As a preferred technical scheme, the first cover plate and the second cover plate are round cakes, and a second through hole is arranged in the middle of the first cover plate and the second cover plate, and the second through hole is used for passing the compression pull rod.

[0011] As a preferred technical scheme, the first coaxial guarantee block and the second coaxial guarantee block are cylinders with a third through hole arranged in the middle, and the third through hole is used for passing the compression pull rod.

[0012] As a preferred technical scheme, a circular groove is arranged on one side of the first cover plate close to the first coaxial guarantee block and on one side of the second cover plate close to the second coaxial guarantee block.

[0013] As a preferred technical scheme, the cushion block is a cylinder, and the thickness of the cushion block is greater than the width of the bearing bush to be processed.

[0014] As a preferred technical scheme, the compression nut is a hexagonal nut.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model discloses a bearing bush installation structure, which comprises a light pole section, a threaded section, a first cover plate, a first coaxial guarantee block, a cushion block, a second coaxial guarantee block, a second cover plate and a compression nut.

[0017] 2. The utility model discloses a bearing bush installation structure, which comprises a light pole section, a threaded section, a first cover plate, a first coaxial guarantee block, a cushion block, a second coaxial guarantee block, a second cover plate and a compression nut. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure schematic view of the utility model;

[0019] Figure 2The dismounting structure schematic view of the utility model;

[0020] Wherein: 1, the compression pull rod; 2, the first cover plate; 3, the first coaxial guarantee block; 4, the cushion block; 5, the second coaxial guarantee block; 6, the second cover plate; 7, the compression nut; 11, the nut head; 12, the polished rod section; 13, the threaded section. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts shall belong to the protection scope of the utility model.

[0022] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings or the orientation or position relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0023] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] Embodiment:

[0025] As Figure 1 shown, the embodiment provides a keel beam bearing bush mounting tool, which comprises a compression pull rod 1, a first cover plate 2, a first coaxial guarantee block 3, a cushion block 4, a second coaxial guarantee block 5, a second cover plate 6 and a compression nut 7, the compression pull rod 1 penetrates through the first cover plate 2, the first coaxial guarantee block 3, the cushion block 4, the second coaxial guarantee block 5, the second cover plate 6 and the compression nut 7 in sequence, the diameters of the first coaxial guarantee block 3 and the second coaxial guarantee block 5 are the hole diameters of the preset holes in the inner wall of the aircraft body, a first through hole is formed in the middle of the cushion block 4, and the hole diameter of the first through hole is greater than the diameter of the bearing bush to be processed. Specifically:

[0026] As Figure 2 shown, the compression pull rod 1 is an integral molded part, including a nut head 11, a light rod section 12 and a threaded section 13 connected in sequence. The main function of the compression pull rod 1 is to bear the cover plate, the coaxial assurance block, the spacer 4 and the compression nut 7, and to ensure that the bearing bushing moves according to the predetermined trajectory when disassembled. Among them, the first cover plate 2, the first coaxial assurance block 3, the spacer 4, the second coaxial assurance block 5 and the second cover plate 6 are sequentially sleeved on the light rod section 12 and the threaded section 13; the compression nut 7 is screwed with the threaded section 13 to form a threaded pair, so as to exert a compression force on the bearing bush 2 to be processed. Optionally, the nut head 11 is a hexagonal nut head. In some other embodiments, the other side of the nut head 11 is fixedly connected with a clamping element, which is used to clamp and fix the installation tool during the installation of the bearing bushing.

[0027] The first cover plate 2 and the second cover plate 6 are both circular structures with a certain thickness, in the shape of a round cake, and a second through hole is provided in the middle part for passing through the compression pull rod 1. The function of the two-part cover plate is to bear the pressure of the compression pull rod 1 and the compression nut 7, and to uniformly transmit this pressure to the bearing bushing or the corresponding coaxial assurance block, so as to ensure that the bearing bushing or the corresponding coaxial assurance block moves according to the predetermined trajectory.

[0028] The first coaxial assurance block 3 and the second coaxial assurance block 5 are both cylindrical bodies with a third through hole provided in the middle part for passing through the compression pull rod 1. The diameter and height of the two-part coaxial assurance block are respectively the hole size and depth of the pre-set hole in the inner wall of the aircraft body, and the main function is to bear the pressure of the corresponding cover plate and act on the old bearing bushing, so that the bearing bushing moves in the hole of the inner wall of the aircraft body according to the predetermined trajectory, so as to achieve the purpose of disassembling the bearing bushing. Optionally, the side of the first cover plate 2 close to the first coaxial assurance block 3 and the side of the second cover plate 6 close to the second coaxial assurance block 5 are respectively provided with a circular groove. The circular groove is used to avoid interference between the cover plate and the bearing bushing.

[0029] The spacer 4 is a cylindrical body with a first through hole provided in the middle part for passing through the compression pull rod 1 and the bearing bushing, and the hole diameter is greater than the diameter of the bearing bushing and the thickness is greater than the width of the bearing bushing. The main function of the spacer 4 is to ensure that the two lugs on the aircraft body do not deform when the compression pull rod 1 and the compression nut 7 are tightened, and to protect the lugs of the aircraft body, and to ensure that the old bearing bushing passes smoothly through the first through hole in the center of the spacer 4 when disassembling.

[0030] The compression nut 7 is a hexagonal nut, which is used in cooperation with the compression pull rod 1 to tighten.

[0031] The aforementioned keel beam bearing bushing installation tool takes the compression pull rod 1 as the main body during installation, and the installation sequence is the first cover plate 2, the first coaxial guarantee block 3, the cushion block 4, the second coaxial guarantee block 5, the second cover plate 6 and the compression nut 7 in turn. The position of the bearing bushing is arranged according to the needs of disassembly or installation. The specific working principle is as follows:

[0032] When disassembling the old bearing bushing, the compression pull rod 1 penetrates through the entire installation tool, the first cover plate 2 is clamped between the compression pull rod 1 and the first coaxial guarantee block 3, and the second cover plate 6 is clamped between the compression pull rod 1 and the second coaxial guarantee block 5. The cushion block 4 is placed between the two ears of the keel beam, the compression pull rod 1 is tightened through the rotation of the compression nut 7, the old bearing bushing is pressed out from the inner wall of the ear, and the old bearing bushing is taken out.

[0033] When installing the new bearing bushing, the new bearing bushing is arranged on the compression pull rod 1 and placed after the first cover plate 2 and the first coaxial guarantee block 3, the cushion block 4 is placed between the two ears of the keel beam, the compression pull rod 1 is tightened by rotating the compression nut 7, and the bushing is pressed into the installation hole of the ear of the keel beam through the cover plate section of the compression pull rod 1.

[0034] The above describes the preferred embodiments of the present application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A tool for installing bearing bushings on a keel beam, characterized in that, The device includes a clamping rod, a first cover plate, a first coaxial retaining block, a pad, a second coaxial retaining block, a second cover plate, and a clamping nut. The clamping rod passes sequentially through the first cover plate, the first coaxial retaining block, the pad, the second coaxial retaining block, the second cover plate, and the clamping nut. The diameters of the first and second coaxial retaining blocks are the same as the diameters of pre-set holes on the inner wall of the aircraft body. A first through hole is formed in the middle of the pad, and the diameter of the first through hole is larger than the diameter of the bearing bushing to be processed.

2. The keel beam bearing bushing installation tool according to claim 1, characterized in that, The clamping rod is an integrally formed part, including a nut head, a smooth rod section and a threaded section connected in sequence. The first cover plate, the first coaxial guarantee block, the pad block, the second coaxial guarantee block and the second cover plate are sequentially sleeved on the smooth rod section and the threaded section. The clamping nut is screwed to the threaded section.

3. The keel beam bearing bushing installation tool according to claim 2, characterized in that, The nut head is a hexagonal nut head.

4. The keel beam bearing bushing installation tool according to claim 2, characterized in that, The other side of the nut head is fixedly connected to a clamping element, which is used to clamp and fix the installation tool during the installation of the bearing bushing.

5. The keel beam bearing bushing installation tool according to claim 1, characterized in that, The height of the first coaxial support block and the second coaxial support block is the depth of the preset hole on the inner wall of the aircraft body.

6. The keel beam bearing bushing installation tool according to claim 1, characterized in that, The first cover plate and the second cover plate are disc-shaped, and a second through hole is opened in the middle, which is used for the clamping rod to pass through.

7. The keel beam bearing bushing installation tool according to claim 6, characterized in that, The first coaxial retaining block and the second coaxial retaining block are cylinders with a third through hole in the middle, and the third through hole is used for the clamping pull rod to pass through.

8. The keel beam bearing bushing installation tool according to claim 7, characterized in that, Circular grooves are respectively formed on the side of the first cover plate near the first coaxial support block and on the side of the second cover plate near the second coaxial support block.

9. The keel beam bearing bushing installation tool according to claim 1, characterized in that, The pad is cylindrical and its thickness is greater than the width of the bearing bushing to be processed.

10. The keel beam bearing bushing installation tool according to claim 1, characterized in that, The clamping nut is a hexagonal nut.

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