General transport tool for aviation wheel

Abstract

The utility model discloses a general transport tool for aviation wheel belongs to aviation machinery technical field. The transport tool includes pull rod, self locking nut, baffle piece assembly. Both ends of pull rod are equipped with outer thread. Two groups of baffle piece assembly are respectively worn on both ends of pull rod through the through hole of respective center. The outside of two groups of baffle piece assembly is equipped with self locking nut, and self locking nut is connected with pull rod thread cooperation. Pull rod passes through the hub axle hole of aviation wheel, and simultaneously passes through the oil baffle ring, bearing, adjusting bushing in the hub axle hole, and two groups of baffle piece assembly are located at the inside and the outside of hub axle hole respectively, and two self locking nuts are screwed to make two groups of baffle piece assembly move towards along the axial direction of pull rod, and the oil baffle ring, bearing, adjusting bushing are pressed tightly. The utility model is used for the fixed bearing, oil baffle ring, adjusting bushing in the loose parts in the aviation wheel during the transfer of aviation wheel, avoids the problem of missing, knocking, bearing lubricating grease pollution.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aviation machinery, and particularly relates to a general transportation tool for aviation wheels. BACKGROUND

[0002] The aviation wheel is installed on the landing gear of an airplane and is used for supporting, taking off, landing, taxiing and braking of the airplane. The aviation wheel comprises a hub, bearings, an oil baffle ring and an adjusting bushing. The bearings, the oil baffle ring and the adjusting bushing are located in the shaft hole of the hub. The adjusting bushing is located in the middle of the shaft hole of the hub. Bearings are installed on the outer side and the inner side of the shaft hole of the hub for rotating and supporting the wheel shaft. The outer side of each bearing is provided with an oil baffle ring. The bearings, the oil baffle ring and the adjusting bushing can be fixed by the backup nut on the landing gear of the airplane only when the final wheel is installed. During the transportation before the assembly of the aviation wheel, the bearings, the oil baffle ring and the adjusting bushing in the wheel are in a loose state. During the transportation, the loose parts are prone to be lost, bumped and contaminated by bearing grease.

[0003] In order to avoid the loss, bumping and contamination of the loose parts during the transportation of the aviation wheel, it is necessary to provide a transportation tool for the aviation wheel, which can fasten the bearings, the oil baffle ring and the adjusting bushing together with the hub during the transportation to avoid the loss, bumping and contamination of the parts.

[0004] After investigation, there is no related tool in the prior art. SUMMARY

[0005] The technical problem to be solved is that, in order to avoid the shortcomings of the prior art, the present application provides a general transportation tool for aviation wheels, which can fix the loose parts, i.e. bearings, an oil baffle ring and an adjusting bushing, in the aviation wheel during the transportation of the aviation wheel before the assembly of the wheel and the landing gear to avoid the loss, bumping and contamination of the loose parts during the transportation of the aviation wheel.

[0006] The technical solution of the present application is a general transportation tool for aviation wheels, which comprises a pull rod, a self-locking nut and a baffle assembly. The pull rod is provided with external threads at both ends. The baffle assembly is provided with two groups. The two groups of baffle assemblies are respectively arranged on the pull rod through the through holes in the centers of the baffle assemblies. The outer side of each group of baffle assemblies is provided with a self-locking nut. The internal threads of the self-locking nuts are connected with the external threads of the pull rod.

[0007] The pull rod penetrates the shaft hole of the hub of the aviation wheel and simultaneously penetrates the oil baffle ring, the bearings and the adjusting bushing located in the shaft hole of the hub. The two groups of baffle assemblies are respectively located on the inner side and the outer side of the shaft hole of the hub. The two groups of baffle assemblies are moved towards each other along the axial direction of the pull rod by screwing the two self-locking nuts to compress the oil baffle ring, the bearings and the adjusting bushing.

[0008] The further technical scheme of the present application is that the baffle assembly comprises a framework and baffles; the center part of the framework is a circular ring, the inner hole of the circular ring is sleeved on the pull rod, and a plurality of tooth-shaped bones are uniformly distributed on the outer diameter circumference of the circular ring; the tooth-shaped bones are arranged along the radial direction of the circular ring, and a straight-toothed tooth-shaped structure is arranged on the tooth-shaped bones; the number of the baffles is the same as that of the tooth-shaped bones, one baffle is arranged on each tooth-shaped bone, a through hole for accommodating the tooth-shaped bone is arranged on the outer side of the baffle, and a tooth shape matched with the tooth shape of the tooth-shaped bone is arranged in the through hole; the tooth shape of the tooth-shaped bone and the tooth shape in the through hole of the baffle are in butt joint, and are used for limiting the axial position of the baffle on the tooth-shaped bone.

[0009] The further technical scheme of the present application is that the tooth-shaped bones are arranged at intervals of 120° in the same circumference on the outer diameter wall of the circular ring of the framework; the cross section of the tooth-shaped bone is square, and the tooth shape of the tooth-shaped bone is arranged on both sides of the tooth-shaped bone along the axial direction of the circular ring of the framework; the baffles are arranged at intervals of 120° in the same circumference on the outer diameter wall of the circular ring of the framework; the baffles are fan-shaped ring pieces, and three baffles are assembled into a whole circular ring; a protruding block is fixed on the outer side wall of the baffle, a square hole is arranged in the protruding block along the radial direction of the baffle, tooth-shaped structures are arranged in the square hole close to both sides of the baffle, and the square hole is a light hole away from both sides of the baffle; the tooth-shaped bone is inserted into the square hole of the baffle, and the tooth-shaped bone and the square hole have two matching modes: sliding fit at the positions where both sides of the square hole are light holes; when the tooth-shaped bone is moved along the axial direction of the pull rod, the tooth shape in the square hole is in butt joint limiting position.

[0010] The further technical scheme of the present application is that the fixed position of the baffle on the tooth-shaped bone is determined according to the diameter size of the hub shaft hole.

[0011] The further technical scheme of the present application is that the installation position of the baffle assembly and the self-locking nut on the pull rod is determined according to the width of the hub shaft hole.

[0012] The further technical scheme of the present application is that the framework and the baffle are made of engineering plastic by injection molding or machining.

[0013] The further technical scheme of the present application is that the pull rod and the self-locking nut are made of engineering plastic by injection molding or machining.

[0014] The further technical scheme of the present application is that a reinforcing skirt is arranged at the contact end of the self-locking nut and the baffle assembly, and a general spanner interface is arranged on the head of the self-locking nut.

[0015] Beneficial effects

[0016] The beneficial effect of the present application is that the aviation wheel general transportation tool is used in the transfer process before the assembly of the aviation wheel, the pull rod of the present application penetrates the hub of the aviation wheel, the baffle assembly is sleeved at both ends of the pull rod, and a self-locking nut is sleeved outside each baffle assembly, by screwing the self-locking nuts at both ends, the baffle assemblies at both ends of the pull rod can move towards each other, so as to compress the bearing and oil baffle on both sides of the hub shaft hole, and fix the adjusting bushing in the hub shaft hole. By using the tool, the phenomenon of part loss, bumping, bearing grease pollution and the like of the oil baffle, bearing and adjusting bushing preinstalled in the hub shaft hole during the transfer process is avoided.

[0017] The present application has strong universality and can be applied to aviation wheels of different specifications. The tooth-shaped bone and the baffle of the framework have two matching modes: sliding connection and tooth-shaped butt joint fixation, which can realize the position adjustment of the baffle relative to the axis of the tooth-shaped bone, so that the baffle of the present application can be applied to aircraft wheel shafts of different diameters, i.e. aviation wheel hubs, oil baffles, bearings and adjusting bushings matched with aircraft wheel shafts of different diameters, which can be achieved by adjusting the fixed position of the baffle in the tooth-shaped bone. The thread length at both ends of the pull rod in the present application is sufficient for aviation wheels of different specifications, and the installation position of the baffle assembly and the self-locking nut at both ends of the pull rod can be adjusted according to the width of the hub shaft diameter. Therefore, the transportation tool has universality, and the cost increase caused by designing special transfer tools according to the specifications of the aviation wheels is avoided.

[0018] The components in the general transportation tool of the present application are made of engineering plastics, which has the characteristics of light weight, and the total weight is less than 0.3 kg. The plastic material has good stability in storage environment and good corrosion resistance, and will not corrode and will not corrode the contacted parts.

[0019] The self-locking nut in the present application has self-locking characteristics and will not loosen due to environmental vibration, which can ensure the reliability of long-term use.

[0020] The present application has the advantages of simple structure, easy processing and manufacturing, convenient installation and operation, low cooperation requirement, no special maintenance requirement and the like. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the general structure of the aviation wheel general transportation tool of the present application;

[0022] Figure 2 is a schematic view of the aviation wheel general transportation tool of the present application after adjusting the position of the baffle;

[0023] Figure 3 is a schematic view of the pull rod structure;

[0024] Figure 4 is a schematic view of the self-locking nut structure;

[0025] Figure 5 is the structure diagram of the outside of the baffle assembly;

[0026] Figure 6 is the structure diagram of the inside of the baffle assembly;

[0027] Figure 7 is the structure diagram of the outside of the baffle assembly after adjusting the position of the baffle;

[0028] Figure 8 is the structure diagram of the inside of the baffle assembly after adjusting the position of the baffle;

[0029] Figure 9 is the axial view of the skeleton structure;

[0030] Figure 10 is the front view of the skeleton structure;

[0031] Figure 11 is the axial view of the baffle structure;

[0032] Figure 12 is the front view of the baffle structure;

[0033] Figure 13 is the structure diagram of the tooth inside the square hole of the baffle;

[0034] Figure 14 is the diagram of the baffle and the tooth skeleton in the tooth cooperation fixed state;

[0035] Figure 15 is the diagram of the baffle and the tooth skeleton in the sliding cooperation state;

[0036] Figure 16 is the diagram of the assembly of the tooling and the aviation wheel of the present application.

[0037] Explanation of reference signs: 1. pull rod, 2. self-locking nut, 21. reinforced skirt, 22. wrench interface, 3. baffle assembly, 31. skeleton, 311. circular ring, 312. tooth skeleton, 32. baffle, 321. protrusion, 322. square hole, 323. tooth structure inside the square hole, 4. hub, 5. oil baffle, 6. bearing, 7. adjusting bushing. DETAILED DESCRIPTION

[0038] The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] Referring to Figures 1-5 The aviation wheel general transportation tool comprises a pull rod 1, a self-locking nut 2 and a baffle assembly 3. Both ends of the pull rod 1 are provided with external threads, and the baffle assembly 3 is provided with two groups. The two groups of baffle assemblies 3 are respectively sleeved on the two ends of the pull rod 1 through the through holes in the centers of the baffle assemblies 3, and one self-locking nut 2 is mounted on the outer side of each of the two groups of baffle assemblies 3. The internal threads of the self-locking nuts 2 are connected with the external threads of the pull rod 1. By screwing the self-locking nuts 2 at both ends, the baffle assemblies 3 mounted on the two ends of the pull rod 1 can move towards each other.

[0041] Referring to Figures 5-15 The baffle assembly 3 comprises a framework 31 and a baffle 32. The framework 31 is used for supporting and mounting the baffle 32 and mounting the baffle assembly 3 on the pull rod 1. The central part of the framework 31 is a circular ring 311, the inner hole of the circular ring 311 is sleeved on the pull rod 1, and the outer diameter of the circular ring 311 is uniformly distributed with three tooth-shaped bones 312. Specifically, the tooth-shaped bone 312 is a columnar rod with a square cross section, one end of which is fixed on the outer diameter wall of the circular ring 311 and is arranged along the radial direction of the circular ring 311. The three tooth-shaped bones 312 are uniformly distributed in the same circle on the outer diameter wall of the circular ring 311 at intervals of 120°. Straight tooth-shaped structures are arranged on both sides of the tooth-shaped bone 312 along the axis direction of the circular ring 311, and the tooth shapes on both sides of the tooth-shaped bone 312 are symmetrically arranged relative to the tooth-shaped bone 312.

[0042] The number of the baffles 32 is the same as that of the tooth-shaped bones 312, and one baffle 32 is mounted on each tooth-shaped bone 312. The baffle 32 is a fan-shaped ring, and a protrusion 321 is fixed on the outer side wall of the baffle 32. The protrusion 321 is located at the center position of the outer side wall of the baffle 32. A through square hole 322 is arranged on the protrusion 321 along the radial direction of the baffle 32, and is used for penetrating the tooth-shaped bone 312. Specifically, referring to Figures 13-15The two side inner walls of the square hole 322 close to the baffle 32 are provided with a tooth-shaped structure 323 matched with the tooth-shaped structure of the tooth-shaped bone 312. The two side inner walls of the square hole 322 away from the baffle 32 are light holes. The tooth-shaped bone 312 is inserted into the square hole 322 of the baffle 32, and the tooth-shaped bone 312 and the square hole 322 have two matching modes: sliding fit at the two sides of the square hole 322 with light holes; when the framework 31 is moved in the axial direction of the pull rod 1, the tooth-shaped bone 312 is close to the baffle 32, at this time, the tooth-shaped structure on both sides of the tooth-shaped bone 312 is connected with the tooth-shaped structure 323 in the square hole 322, and the baffle 32 is limited and fixed in the axial position of the tooth-shaped bone 312.

[0043] The baffle 32 and the tooth-shaped bone 312 are inserted and fitted in the sliding fit mode, and after being inserted and fitted in place, the baffle 32 and the tooth-shaped bone 312 are limited and fixed by moving the framework 31 in the axial direction. Whether the insertion is in place is determined by whether the baffle 32 can block the oil ring 5 at both ends of the hub 4 shaft hole. Based on the two matching modes of the baffle 32 and the tooth-shaped bone 312, the positions of the three baffles 32 on the tooth-shaped bone 312 can be adjusted. According to the diameter size of the aircraft wheel shaft, that is, the diameter size of the hub 4 shaft hole, the radial position of the baffle 32 installed on the framework 31 is determined. When the diameter of the hub 4 shaft hole is large, the fixed position of the baffle 32 is adjusted outward in the radial direction of the framework 31; when the diameter of the hub 4 shaft hole is small, the fixed position of the baffle 32 is adjusted inward in the radial direction of the framework 31. The three baffles 32 are arranged in a whole circular ring at the minimum radial installation position on the framework 31. When the position of the baffle 32 is adjusted, the tooth-shaped structure of the baffle 32 and the tooth-shaped bone 312 is separated, the baffle 32 is moved at the sliding fit position, and then it is fixed after being moved in place.

[0044] According to the specification of the certain type of aircraft wheel, the framework 31, the baffle 32, the self-locking nut 2 and the pull rod 1 are made of engineering plastic in this embodiment, and are made by SFG-2 machine. The specifications and sizes of the parts are as follows: the length of the pull rod 1 is 250 mm, the diameter is 10 mm, and M10 threads with a length of 100 mm are machined at both ends of the pull rod 1. The specification of the self-locking nut 2 is M10, and the thickness is 15 mm. A 5 mm thick reinforcing skirt 21 is arranged at the bottom of the self-locking nut 2, i.e. the contact end of the baffle assembly 3, and a general spanner interface 22 is arranged at the head of the self-locking nut 2, with a specification of M10, for easy screwing operation. The diameter of the middle hole of the ring 311 of the framework 31 is 11 mm, the outer diameter of the ring 311 is 30 mm, and the length of the three tooth-shaped bones 312 uniformly distributed on the outer diameter wall of the ring 311 is 24 mm. The baffle 32 is a 120° sector thin-walled ring structure, with a thickness of 2 mm. The thickness of the internal tooth-shaped structure 323 of the square hole 322 is 2 mm, and the thickness of the light hole part in the square hole 322 is 2 mm. In the size structure of this embodiment, the overall weight of the tool is less than 0.3 kg by using engineering plastic, and the tool is very light to use. At the same time, the plastic material has good stability in storage environment and good corrosion resistance, and will not corrode itself or the contacted parts, so that the tool does not need special maintenance and has high practicability.

[0045] Referring to Figure 16 When the tool is used, the pull rod 1 penetrates the shaft hole of the hub 4 of the aircraft wheel, and penetrates the oil baffle 5, the bearing 6 located at both ends of the shaft hole of the hub 4, and the adjusting bushing 7 located in the shaft hole of the hub 4. The two sets of baffle assemblies 3 are sleeved on the pull rod 1 at both ends through the center holes of the respective rings 311, and are located at the inner side and the outer side of the shaft hole of the hub 4, respectively. The two self-locking nuts 2 are sleeved on the pull rod 1 at both ends, and are located at the outer side of the two sets of baffle assemblies 3, respectively. By screwing the two self-locking nuts 2, the two sets of baffle assemblies 3 are moved towards each other along the pull rod shaft 1, and the positions of the oil baffle 5, the bearing 6 and the adjusting bushing 7 are fixed, so as to avoid the loss, bumping and bearing grease pollution of the oil baffle 5, the bearing 6 and the adjusting bushing 7 pre-installed in the shaft hole of the hub 4 during transportation. The transportation tool of the present application belongs to a general tool, and the positions of the baffles 32 and the self-locking nuts 2 can be adjusted according to the width and the wheel shaft diameter of different aircraft wheels, so as to meet the use requirements of different aircraft wheels.

[0046] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments without departing from the principles and purposes of the present application within the scope of the present application.

Claims

1. A universal transport tooling for aircraft wheels, characterized in that: The assembly includes a pull rod (1), a self-locking nut (2), and a baffle assembly (3); both ends of the pull rod (1) are provided with external threads; the baffle assembly (3) is provided in two sets, and the two sets of baffle assemblies (3) are respectively installed at both ends of the pull rod (1) through the through holes in their respective centers; the outer sides of the two sets of baffle assemblies (3) are each equipped with a self-locking nut (2), and the internal thread of the self-locking nut (2) is engaged with the external thread of the pull rod (1); The pull rod (1) passes through the shaft hole of the hub (4) in the aircraft wheel, and also passes through the oil baffle (5), bearing (6), and adjusting bushing (7) located in the shaft hole of the hub (4). The two sets of baffle assemblies (3) are located on the inner and outer sides of the shaft hole of the hub (4), respectively. By screwing on the two self-locking nuts (2), the two sets of baffle assemblies (3) move towards each other along the axial direction of the pull rod (1) to press the oil baffle (5), bearing (6), and adjusting bushing (7). The baffle assembly (3) includes a frame (31) and baffles (32); the center of the frame (31) is a ring (311), the inner hole of the ring (311) is fitted onto the pull rod (1), and multiple toothed bones (312) are evenly distributed around the outer diameter of the ring (311); the toothed bones (312) are arranged radially along the ring (311), and the toothed bones (312) are provided with straight toothed structures; the number of baffles (32) is the same as that of toothed bones (312), and one baffle (32) is installed on each toothed bone (312). The outer side of the baffle (32) is provided with a through hole to accommodate the toothed bone (312) to pass through, and the through hole is provided with a toothed structure that matches the toothed structure of the toothed bone (312); the toothed structure of the toothed bone (312) and the toothed structure in the through hole of the baffle (32) are mated and matched to limit the axial position of the baffle (32) on the toothed bone (312).

2. The general-purpose transport fixture for aircraft wheels according to claim 1, characterized in that: Three serrated bones (312) are provided, evenly distributed at 120° intervals on the outer circumference of the ring (311) of the skeleton (31); the cross-section of the serrated bones (312) is square, and the teeth of the serrated bones (312) are arranged on both sides of the serrated bones (312) along the axial direction of the ring (311) of the skeleton; three baffles (32) are provided, and the baffles (32) are fan-shaped rings; a protrusion (321) is fixed on the outer wall of the baffle (32), and a square hole (322) is provided in the protrusion (321) along the radial direction of the baffle (32). The square hole (322) has toothed structures (323) on both sides near the baffle (32) and light holes on both sides away from the baffle (32). The toothed bone (312) is inserted into the square hole (322) of the baffle (32). The toothed bone (312) and the square hole (322) have two matching methods: the toothed bone (312) and the light holes on both sides of the square hole (322) slide together; when the toothed bone (312) moves along the axial direction of the pull rod (1), the toothed bone (312) and the teeth in the square hole (322) are matched and limited.

3. The general-purpose transport tooling for aircraft wheels according to claim 1, characterized in that: The fixed position of the baffle (32) on the toothed bone (312) is determined according to the diameter of the shaft hole of the hub (4).

4. The general-purpose transport fixture for aircraft wheels according to claim 1, characterized in that: The mounting positions of the baffle assembly (3) and the self-locking nut (2) on the tie rod (1) are determined according to the width of the hub (4) shaft hole.

5. The general-purpose transport fixture for aircraft wheels according to claim 1, characterized in that: The skeleton (31) and the baffle (32) are both made of engineering plastic injection molding or machining.

6. The universal transport fixture for aircraft wheels according to claim 1, characterized in that: The tie rod (1) and the self-locking nut (2) are both made of engineering plastic injection molding or machining.

7. The general-purpose transport fixture for aircraft wheels according to claim 1, characterized in that: The self-locking nut (2) has a reinforcing skirt (21) at the contact end with the baffle assembly (3), and the head of the self-locking nut (2) has a universal wrench interface (22).

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