An installation tool

Abstract

This utility model relates to the field of aircraft maintenance technology, and in particular to an installation tool for installing dust caps. The tool includes an elastic ring, a handle portion, an extension portion, and an installation portion arranged sequentially from back to front. The front end of the installation portion has an installation hole. Multiple abutment portions are spaced circumferentially along the wall of the installation hole. The abutment portions extend in a front-rear direction. A receiving groove is provided on the side of the abutment portion away from the wall of the installation hole. The receiving groove penetrates both sides of the abutment portion relative to the axial direction of the installation hole. The elastic ring is disposed within the installation hole and passes through the multiple receiving grooves. The elastic ring has a break. In summary, using this utility model's installation tool to install dust caps can prevent the dust caps from detaching during installation, avoiding them falling into the gap between the wheel hub and the fairing, thereby ensuring maintenance efficiency and reducing the risk of flight delays.

Description

Technical Field

[0001] This utility model relates to the field of aircraft maintenance technology, and in particular to an installation tool. Background Technology

[0002] In aircraft maintenance, especially the maintenance of the B737 aircraft's main landing gear, the installation of dust caps is a crucial step. The dust caps for the B737's main landing gear are installed on the inner part of the wheel hub. For the outer main landing gear wheel hubs, which also have fairings installed, the space for removing and installing the dust caps is extremely limited. The installation process primarily relies on directly twisting the dust caps with fingers. Due to the limited operating space, twisting the dust caps with fingers is extremely inconvenient, and they are prone to falling into the gap between the wheel hub and the fairing during installation. This requires a considerable amount of time to remove the dust caps, reducing maintenance efficiency and potentially causing flight delays. Utility Model Content

[0003] The purpose of this utility model is to provide an installation tool to solve the technical problem that the operation of installing dust caps is very inconvenient, and that dust caps are prone to falling into the gap between the wheel hub and the fairing during the installation process, thereby reducing maintenance efficiency.

[0004] To achieve the above objectives, this utility model provides an installation tool for installing a dust cap, comprising an elastic ring, a handheld part, an extension part, and an installation part arranged sequentially from back to front. The front end of the installation part is provided with an installation hole, and the wall of the installation hole is provided with multiple abutment parts spaced apart along its circumference. The abutment parts extend in the front-back direction, and the side of the abutment part away from the wall of the installation hole is provided with a receiving groove. The receiving groove passes through the two sides of the abutment part relative to the axial direction of the installation hole. The elastic ring is disposed in the installation hole and passes through the multiple receiving grooves. The elastic ring is provided with a break.

[0005] Optionally, the abutting portion extends from the opening of the mounting hole to the bottom of the mounting hole.

[0006] Optionally, the mounting hole has a first guide ring around its opening.

[0007] Optionally, the front end of the abutting part is provided with a second guide part, the second guide part is connected to the first guide part, and the abutting part is provided with a third guide part on two sides circumferentially opposite to the mounting part.

[0008] Optionally, the distance between the bottom of the receiving groove and the mounting hole is greater than the distance between the opening of the receiving groove and the mounting hole.

[0009] Optionally, the bottom of the mounting hole is further provided with a receiving hole, the receiving hole and the mounting hole are coaxial, and the receiving hole is connected to the side of each of the abutting portions away from the hole wall of the mounting hole.

[0010] Optionally, the elastic ring abuts against the wall of the receiving groove to be fixed in the mounting hole.

[0011] Optionally, the outer diameter of the handheld part is larger than the outer diameter of the mounting part, and the outer diameter of the mounting part is larger than the outer diameter of the handheld part.

[0012] Optionally, the outer side of the handheld part is provided with an arc-shaped gripping groove, and the gripping groove is provided with a plurality of anti-slip patterns at intervals along the circumference of the handheld part, and the anti-slip patterns extend along the front-back direction.

[0013] Optionally, the inner diameter of the mounting hole is 11mm to 13mm, the number of abutting parts is 12, the distance between two adjacent abutting parts is 1.5mm to 2.5mm, the distance between the side of the abutting part away from the mounting hole and the hole wall of the mounting hole is 0.9mm to 1.5mm, the inner diameter of the elastic ring is 9mm to 11mm and the outer diameter is 11mm to 13mm, the break width is 0.5mm to 1mm, and the distance between the bottom of the receiving groove and the bottom of the mounting hole is no more than 0.3mm.

[0014] Compared with the prior art, the installation tool implemented in this utility model has the following advantages:

[0015] In this utility model installation tool, the handheld part provides a gripping position for the user, and the extension part extends the tool's length so that it can be installed across the fairing (the installation part and the handheld part are located on opposite sides of the fairing). The installation part is used to install a dust cap. After the dust cap is inserted into the mounting hole located at the front end of the installation part, multiple abutment parts circumferentially arranged inside the mounting hole abut against the outer surface of the dust cap. When the user holds and rotates the handheld part, the abutment parts can drive the dust cap to rotate together, thereby threading the dust cap onto the hub. Each abutment part is also provided with a receiving groove for... The tool is equipped with a flexible ring with a break. When the dust cap is inserted into the mounting hole, one end of the dust cap expands the flexible ring, and then the dust cap moves further into the mounting hole. The flexible ring fits into the groove on the outside of the dust cap to prevent it from dislodging forward from the mounting hole. After the dust cap is installed, the user can pull it outward by holding the handle to separate the tool from the dust cap. In summary, using this utility model's installation tool to install dust caps can prevent the dust cap from detaching during installation, avoiding the dust cap falling into the gap between the wheel hub and the fairing, thereby ensuring maintenance efficiency and reducing the risk of flight delays. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation tool of this utility model.

[0017] Figure 2 This is the front view of the installation tool of this utility model.

[0018] Figure 3 This is a top view of the installation tool of this utility model.

[0019] Figure 4 for Figure 3 Sectional view of AA.

[0020] Figure 5 for Figure 4 A magnified view of part B in the middle.

[0021] Figure 6 This is a schematic diagram of the installation tool of this utility model with a dust cap attached.

[0022] Figure 7 This is a cross-sectional view of the installation tool of this utility model with a dust cap attached.

[0023] Figure 8 for Figure 7 A magnified view of part C in the middle.

[0024] Figure 9 This is an assembly diagram for installing the dust cap using this utility model.

[0025] Reference numerals: 1. Mounting part; 11. Mounting hole; 12. Abutting part; 13. Receiving groove; 14. First guide part; 15. Second guide part; 16. Third guide part; 17. Receiving hole; 2. Extension part; 3. Hand grip part; 31. Grip groove; 32. Anti-slip texture; 4. Elastic ring; 41. Break; 5. Dust cap; 51. First part; 52. Second part; 53. Third part; 531. Connecting hole; 6. Fairing; 7. Hub. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0027] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] like Figures 1 to 9 As shown, an installation tool of this utility model is used to install a dust cap 5. It includes an elastic ring 4, a handheld part 3, an extension part 2, and an installation part 1 arranged sequentially from back to front. The front end of the installation part 1 is provided with an installation hole 11. The wall of the installation hole 11 is provided with a plurality of abutment parts 12 spaced apart along its circumference. The abutment parts 12 extend in the front-back direction. The side of the abutment part 12 away from the wall of the installation hole 11 is provided with a receiving groove 13. The receiving groove 13 penetrates the two sides of the abutment part 12 relative to the axial direction of the installation hole 11. The elastic ring 4 is disposed in the installation hole 11 and passes through the plurality of receiving grooves 13. The elastic ring 4 is provided with a break 41.

[0030] In the above technical solution, the handheld part 3 provides a gripping position for the user, and the extension part 2 extends the length of the tool so that the tool can be installed across the fairing 6 (the mounting part 1 and the handheld part 3 are located on both sides of the fairing 6). The mounting part 1 is used to install the dust cap 5. After the dust cap 5 is inserted into the mounting hole 11 located at the front end of the mounting part 1, multiple abutment parts 12 arranged circumferentially inside the mounting hole 11 can abut against the outer side of the dust cap 5. When the user holds and rotates the handheld part 3, the abutment parts 12 can drive the dust cap 5 to rotate together, so as to thread the dust cap 5 to the hub 7. Each abutment part 12 is also provided with a receiving groove 13 for... The elastic ring 4 with a break 41 is installed. When the dust cap 5 is inserted into the mounting hole 11, one end of the dust cap 5 opens the elastic ring 4, and then the dust cap 5 moves further into the mounting hole 11. The elastic ring 4 fits into the groove on the outside of the dust cap 5 to prevent it from dislodging forward from its mounting hole 11. After the dust cap 5 is installed, the user can pull the tool and the dust cap 5 apart by holding the handle 3 outward. In summary, using the installation tool of this utility model to install the dust cap 5 can prevent the dust cap 5 from dislodging during the installation process and avoid the dust cap 5 from falling into the gap between the wheel hub 7 and the fairing 6 during the installation process, thereby ensuring maintenance efficiency and reducing the risk of flight delays.

[0031] The dust cap 5 includes a first part 51, a second part 52, and a third part 53 arranged sequentially from back to front. The front end of the third part 53 is provided with a connecting hole 531 for threaded connection to the hub 7. The first part 51 and the third part 53 are hexagonal prisms, and the second part 52 is a cylindrical prism. The outer surfaces of the first part 51 and the third part 53 protrude from the outer surface of the second part 52. The rear edge of the first part 51 is provided with a large guide chamfer or guide fillet, and the front edge of the first part 51 is provided with a small guide chamfer or guide fillet. This makes it easier to open the elastic ring 4 when the dust cap 5 moves backward, and more difficult to open the elastic ring 4 when it moves forward. This effectively prevents the dust cap 5 from detaching from the mounting hole 11 due to gravity. In addition, the maximum outer diameter of the first part 51 is greater than the inner diameter of the elastic ring 4 and smaller than the inner diameter of the mounting hole 11.

[0032] Among them, the elastic ring 4 is a component that is prone to elastic deformation. It can be made of rubber and its cross-sectional shape can be circular.

[0033] Furthermore, the abutting part 12 extends from the opening of the mounting hole 11 to the bottom of the mounting hole 11 to ensure that the abutting part 12 can abut against the outer side of the dust cap 5, and increase the abutting area, reduce the pressure on the abutting part 12, and reduce the risk of damage to the abutting part 12.

[0034] Furthermore, the mounting hole 11 is provided with a first guide portion 14 around its opening. The first guide portion 14 is used to guide the dust cap 5 into the mounting hole 11. In addition, the diameter of the first guide portion 14 gradually decreases from front to back. The first guide portion 14 can be a slope or an arc surface.

[0035] Furthermore, the front end of the abutment portion 12 is provided with a second guide portion 15, which is connected to the first guide portion 14. The abutment portion 12 is provided with a third guide portion 16 on two circumferential sides relative to the mounting portion 1. The second guide portion 15 is used to guide the dust cap 5 to the abutment portions 12, and the third guide portion 16 is used to guide the dust cap 5 to the point where the edge between two adjacent sides of the dust cap 5 is located between two adjacent abutment portions 12. In addition, the diameter of the second guide portion 15 gradually decreases from front to back, and the distance between the two third guide portions 16 located on both sides of the abutment portion 12 gradually increases from the distance away from the hole wall of the mounting hole 11 to the distance close to the hole wall of the mounting hole 11. The second guide portion 15 and the third guide portion 16 can be inclined surfaces or curved surfaces.

[0036] Furthermore, the distance between the bottom of the receiving groove 13 and the mounting hole 11 is greater than the distance between the opening of the receiving groove 13 and the mounting hole 11, so that after the first part 51 passes through the elastic ring 4, the third part 53 can protrude from the front end of the mounting hole 11. Furthermore, in order to ensure that the first part 51 can pass through the elastic ring 4, the distance between the bottom of the receiving groove 13 and the mounting hole 11 is greater than 7mm, and in order to ensure that the third part 53 can protrude from the front end of the mounting hole 11, the distance between the receiving groove 13 and the opening of the mounting hole 11 is less than 2.5mm.

[0037] Furthermore, the bottom of the mounting hole 11 is provided with a receiving hole 17. The receiving hole 17 is coaxial with the mounting hole 11. The receiving hole 17 is connected to the side of each of the abutting portions 12 away from the hole wall of the mounting hole 11 to accommodate the position where the rear end of the first part 51 has a rounded corner. After the first part 51 passes through the elastic ring 4, the receiving hole 17 can accommodate the guide rounded corner of the rear end of the first part 51 to reduce the necessary distance between the receiving groove 13 and the bottom of the mounting hole 11.

[0038] Furthermore, the elastic ring 4 abuts against the groove wall of the receiving groove 13 to be fixed in the mounting hole 11. The elastic ring 4 may be a spiral structure along the axial direction of the mounting part 1. The elastic ring 4 abuts against the groove wall on one side of a portion of the receiving groove 13 and the groove wall on the other side of another portion of the receiving groove 13. The elastic ring 4 may also abut against the groove walls on both sides of each receiving groove 13.

[0039] Furthermore, the outer diameter of the handheld part 3 is larger than the outer diameter of the mounting part 1, and the outer diameter of the mounting part 1 is larger than the outer diameter of the handheld part 3, so as to ensure that the handheld part 3 is easy to grip, the extension part 2 can reduce weight, and the mounting part 1 has a mounting hole 11 of sufficient size and sufficient strength.

[0040] Furthermore, the outer surface of the handheld part 3 is provided with an arc-shaped gripping groove 31. The gripping groove 31 is provided with a plurality of anti-slip patterns 32 at intervals along the circumference of the handheld part 3. The anti-slip patterns 32 extend along the front-back direction. When the user grips the gripping groove 31, the probability of the hand and the handheld part 3 slipping in the front-back direction can be reduced. The anti-slip patterns 32 are used to reduce the probability of the hand and the handheld part 3 slipping in the circumference of the handheld part 3 during use. In addition, the anti-slip patterns 32 can be grooves or protrusions.

[0041] Furthermore, the inner diameter of the mounting hole 11 is 11mm to 13mm, the number of abutting parts 12 is 12, the distance between two adjacent abutting parts 12 is 1.5mm to 2.5mm, the distance between the side of the abutting part 12 away from the mounting hole 11 and the hole wall of the mounting hole 11 is 0.9mm to 1.5mm, to adapt to the size of the dust cap 5, ensuring that the dust cap 5 can be installed in the mounting hole 11 and abutted by each abutting part 12, the inner diameter of the elastic ring 4 is 9mm to 11mm, the outer diameter is 11mm to 13mm, the width of the break 41 is 0.5mm to 1mm, and the distance between the bottom of the receiving groove 13 and the bottom of the mounting hole 11 is no more than 0.3mm, to adapt to the size of the dust cap 5, so that it can expand the elastic ring 4.

[0042] Furthermore, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit ​​connection.

[0043] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.

[0044] In summary, the present invention provides an installation tool, the technical effects of which are as follows:

[0045] In this utility model installation tool, the handheld part 3 provides a gripping position for the user, and the extension part 2 extends the length of the tool so that it can be installed across the fairing 6 (the installation part 1 and the handheld part 3 are located on opposite sides of the fairing 6). The installation part 1 is used to install the dust cap 5. After the dust cap 5 is inserted into the installation hole 11 located at the front end of the installation part 1, multiple abutment parts 12 arranged circumferentially inside the installation hole 11 can abut against the outer side of the dust cap 5. When the user holds and rotates the handheld part 3, the abutment parts 12 can drive the dust cap 5 to rotate together, so as to thread the dust cap 5 to the hub 7. Each abutment part 12 is also provided with a receiving groove 13. The tool is used to install an elastic ring 4 with a break 41. When the dust cap 5 is inserted into the mounting hole 11, one end of the dust cap 5 opens the elastic ring 4, and then the dust cap 5 moves further into the mounting hole 11. The elastic ring 4 fits into the groove on the outside of the dust cap 5 to prevent it from coming out of the mounting hole 11. After the dust cap 5 is installed, the user can pull the tool and the dust cap 5 apart by holding the handle 3 outward. In summary, using the installation tool of this utility model to install the dust cap 5 can prevent the dust cap 5 from coming out during the installation process and avoid the dust cap 5 from falling into the gap between the hub 7 and the fairing 6 during the installation process, thereby ensuring maintenance efficiency and reducing the risk of flight delays.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An installation tool for installing a dust cap (5), characterized in that, The device includes an elastic ring (4), a handheld part (3), an extension part (2), and a mounting part (1) arranged sequentially from back to front. The mounting part (1) has a mounting hole (11) at its front end. The wall of the mounting hole (11) is provided with a plurality of abutment parts (12) spaced apart along its circumference. The abutment parts (12) extend in the front-back direction. The side of the abutment part (12) away from the wall of the mounting hole (11) is provided with a receiving groove (13). The receiving groove (13) penetrates the two sides of the abutment part (12) relative to the axial direction of the mounting hole (11). The elastic ring (4) is disposed in the mounting hole (11) and passes through the plurality of receiving grooves (13). The elastic ring (4) is provided with a break (41).

2. The installation tool of claim 1, wherein, The abutting part (12) extends from the opening of the mounting hole (11) to the bottom of the mounting hole (11).

3. Mounting tool according to claim 1 or 2, characterized in that The mounting hole (11) has a first guide portion (14) around its opening.

4. The installation tool of claim 3, wherein, The front end of the abutting part (12) is provided with a second guide part (15), which is connected to the first guide part (14). The abutting part (12) is provided with a third guide part (16) on two sides circumferentially opposite to the mounting part (1).

5. The installation tool according to claim 1, characterized in that, The distance between the bottom of the receiving groove (13) and the mounting hole (11) is greater than the distance between the opening of the receiving groove (13) and the mounting hole (11).

6. The installation tool of claim 1, wherein, The bottom of the mounting hole (11) is also provided with a receiving hole (17), the receiving hole (17) and the mounting hole (11) are coaxial, and the receiving hole (17) is connected to the side of each of the abutment portions (12) away from the hole wall of the mounting hole (11).

7. The installation tool of claim 1, wherein, The elastic ring (4) abuts against the groove wall of the receiving groove (13) to be fixed in the mounting hole (11).

8. The installation tool of claim 1, wherein, The outer diameter of the handheld part (3) is larger than the outer diameter of the mounting part (1), and the outer diameter of the mounting part (1) is larger than the outer diameter of the handheld part (3).

9. The installation tool of claim 1, wherein, The outer side of the handheld part (3) is provided with an arc-shaped grip groove (31), and the grip groove (31) is provided with a plurality of anti-slip textures (32) at intervals along the circumference of the handheld part (3), and the anti-slip textures (32) extend along the front-back direction.

10. The installation tool of claim 1, wherein, The inner diameter of the mounting hole (11) is 11mm to 13mm, the number of abutting parts (12) is 12, the distance between two adjacent abutting parts (12) is 1.5mm to 2.5mm, the distance between the side of the abutting part (12) away from the mounting hole (11) and the hole wall of the mounting hole (11) is 0.9mm to 1.5mm, the inner diameter of the elastic ring (4) is 9mm to 11mm and the outer diameter is 11mm to 13mm, the width of the break (41) is 0.5mm to 1mm, and the distance between the bottom of the receiving groove (13) and the bottom of the mounting hole (11) is no more than 0.3mm.

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