Positioning support for airplane wheel maintenance

Abstract

The utility model provides a positioning support for airplane wheel maintenance, which comprises a fixed disc arranged at the upper part of a movable support, and a universal positioning mechanism is arranged on the fixed disc. The universal positioning mechanism comprises a positioning pin used for positioning an inner ring of the airplane wheel and a limiting plate arranged on the fixing disc and used for limiting an outer ring of a hub of the airplane wheel, and the positioning pin is of a circular truncated cone structure with the diameter of the lower portion larger than that of the upper portion. And a plurality of limiting grooves used for limiting tires of airplane wheels with different specifications and diameters are formed in the limiting plate. According to the airplane wheel supporting and fixing device, the airplane wheels with the various specifications and diameters can be conveniently, stably and firmly supported and fixed through the universal positioning mechanism, and the airplane wheels with the various specifications and diameters can be positioned; the maintenance and overhaul efficiency of the airplane wheel is greatly improved, the practicability is higher, subsequent storage and management are facilitated, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of brackets, in particular to a positioning bracket for wheel maintenance. Background Art

[0002] In the field of aviation maintenance, during the maintenance and repair of aircraft landing gear, the aircraft landing gear wheels are often disassembled for inspection and maintenance. After the wheels are removed, they usually need to be fixed on a positioning table and then inspected and maintained. At present, due to the different passenger carrying capacities of aircraft, the sizes and types of aircraft wheels are also different. Therefore, when performing maintenance operations on them, it is necessary to prepare multiple positioning mechanisms of different specifications and models for positioning. When performing maintenance and inspection on different wheels, it is necessary to frequently disassemble and replace the positioning mechanisms, which greatly reduces the maintenance and inspection efficiency of the wheels, resulting in poor applicability and more troublesome storage management in the later stage. Utility Model Content

[0003] In view of this, the utility model provides a positioning bracket for wheel maintenance, which can achieve convenient, stable and firm support and fixation operations for wheels of various specifications and diameters by designing a universal positioning mechanism. It can position wheels of various specifications, greatly improving the maintenance and repair efficiency of the wheels, being more practical, convenient for subsequent storage and management, and more convenient to operate.

[0004] In order to solve the above technical problems, the utility model provides a positioning bracket for wheel maintenance, including a fixed plate arranged on the upper part of the mobile bracket, and a universal positioning mechanism is arranged on the fixed plate. The universal positioning mechanism includes a positioning pin for positioning the inner ring of the wheel and a limiting plate arranged on the fixed plate for limiting the outer ring of the wheel hub of the wheel. The positioning pin is a truncated cone structure with a lower diameter greater than the upper diameter, and a plurality of limiting grooves for limiting the tires of wheels of different diameters are provided on the limiting plate. The utility model can realize convenient, stable and firm support and fixing operations for wheels of various diameters through the universal positioning mechanism, and can position wheels of various specifications, thereby greatly improving the maintenance and repair efficiency of the wheel, being more practical, convenient for subsequent storage and management, and more convenient to operate.

[0005] The cam is provided with a spring inside the fixing cylinder, and a fixing rod which is parallel to the axial direction of the fixing cylinder is provided on the upper part of the spring. The limiting plate is provided on the upper part of the fixing rod, and the plane where the lower part of the limiting plate is located is parallel to the plane where the upper part of the push rod is located. The limiting groove is a stepped arc structure, and the lower part of the tire of the wheel is placed on the horizontal plane of the limiting groove, and the outer wall of the tire of the wheel contacts the inner side of the vertical part in the limiting groove. The hollow part of the inner ring of the wheel hub is sleeved on the locating pin, and the lower part of the wheel hub fits with the diameter adapted to the conical locating pin, and the conical structure can also be used for positioning the inner ring of the wheel hub of the wheel with a size error, and has stronger applicability. The utility model can realize the limiting and fixing operation of aircraft wheels of various specifications with different outer diameters through the limiting groove of the stepped arc structure, and has stronger applicability.

[0006] A telescopic push rod is arranged on the fixed plate, and a push rod is arranged at the end of the telescopic push rod. There are two telescopic push rods, which are symmetrically arranged on the fixed plate, and there are two fixed cylinders, which are symmetrically arranged on the fixed plate. The angle between adjacent fixed cylinders and the telescopic push rods is 90 degrees. The cross-design of the two fixed cylinders and the two telescopic push rods and the symmetrical arrangement of the two fixed cylinders themselves and the two telescopic push rods themselves can not only ensure the firm support, fixation and limitation of the tire of the wheel, but also realize the stable and convenient upward ejection of the repaired wheel, which greatly improves the maintenance efficiency of the wheel and makes the operation more convenient.

[0007] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0008] 1. The utility model can realize convenient, stable and firm support and fixation operations for wheels of various specifications and diameters through a universal positioning mechanism, and can position wheels of various specifications, greatly improving the maintenance and repair efficiency of the wheels, being more practical, convenient for subsequent storage and management, and more convenient to operate.

[0009] 2. The utility model can realize the limiting and fixing operation of aircraft wheels of various specifications and outer diameters through the limiting groove of the stepped arc structure. The limiting groove is a stepped arc structure. The lower part of the tire of the wheel is placed on the horizontal plane of the limiting groove. The outer side wall of the tire of the wheel is in contact with the inner side of the vertical part in the limiting groove. The hollow part of the inner ring of the wheel hub is sleeved on the positioning pin, and the lower part of the wheel hub is fitted with the diameter corresponding to the tapered positioning pin. The tapered structure can also be used to position the inner ring of the wheel hub of the wheel with size error, and the applicability is stronger.

[0010] 3. The utility model can set the angle between adjacent fixed cylinders and telescopic push rods to 90 degrees. The cross design of the two fixed cylinders and the two telescopic push rods and the symmetrical arrangement between the two fixed cylinders themselves and the two telescopic push rods themselves can not only ensure the firm support, fixation and positioning of the tire of the wheel, but also realize the stable and convenient upward ejection of the repaired wheel, which greatly improves the maintenance efficiency of the wheel and makes the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the positioning bracket for wheel maintenance of the utility model;

[0012] Figure 2 This is a front view of the positioning bracket for wheel maintenance of the utility model;

[0013] Figure 3 It is a top view of the positioning bracket for wheel maintenance of the utility model;

[0014] Figure 4 It is a cross-sectional view of the utility model taken along line AA.

[0015] Explanation of the reference numerals: 100, fixed plate; 200, universal positioning mechanism; 201, positioning pin; 202, limiting plate; 203, limiting groove; 204, fixed cylinder; 205, spring; 206, fixed rod; 207, telescopic push rod; 208, push rod. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-4 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0017] like Figure 1-4As shown: This embodiment provides a positioning bracket for wheel maintenance, including a fixed plate 100 arranged on the upper part of the mobile bracket, the mobile bracket is a support bracket with a universal wheel in the prior art, a stepped hole is opened on the fixed plate 100, and a threaded hole matching the stepped hole is arranged on the support bracket, the fixed plate 100 is fixed to the support bracket by countersunk bolts, and a universal positioning mechanism 200 is arranged on the fixed plate 100, and the universal positioning mechanism 200 includes a positioning pin 201 for positioning the inner ring of the wheel and a positioning pin 201 arranged on the fixed plate 100 for positioning the inner ring of the wheel. The limiting plate 202 is used to limit the outer ring of the wheel hub, and the positioning pin 201 is a truncated cone structure with a lower diameter larger than an upper diameter. The limiting plate 202 is provided with a plurality of limiting grooves 203 for limiting the tires of wheels of different diameters. The utility model can realize convenient, stable and firm support and fixation operations for wheels of various diameters through a universal positioning mechanism 200, and can position wheels of various specifications, which greatly improves the maintenance and repair efficiency of the wheels, is more practical, facilitates subsequent storage and management, and is more convenient to operate.

[0018] According to one embodiment of the utility model, Figure 1 , Figure 3 and Figure 4 As shown, a fixing cylinder 204 is obliquely arranged on the fixing plate 100 located on the outer side of the positioning pin 201, and the axis of the fixing cylinder 204 corresponds to the taper of the positioning pin 201. A spring 205 is arranged inside the fixing cylinder 204, and a fixing rod 206 parallel to the axial direction of the fixing cylinder 204 is arranged on the upper part of the spring 205. The limiting plate 202 is arranged on the upper part of the fixing rod 206, and the plane where the lower part of the limiting plate 202 is located is parallel to the plane where the upper part of the top rod 208 is located. The limiting groove 203 is a stepped arc structure, and the lower part of the tire of the wheel is placed on the horizontal plane of the limiting groove 203. The outer side wall of the tire of the wheel contacts the inner side of the vertical part in the limiting groove 203, and the hollow part of the inner ring of the wheel hub is sleeved on the positioning pin 201, and the lower part of the wheel hub is in contact with the tapered fixing The locating pin 201 fits in with the corresponding diameter, and the conical structure can also be used to position the inner ring of the hub of the wheel with dimensional error, and it is more applicable. When the hub of the wheel that needs to be repaired and maintained is placed in the corresponding stepped limiting groove 203, the gravity of the wheel itself will press the fixing rod 206 to compress the spring 205, and the compressed spring 205 will move downward with the fixing rod 206 until it moves downward with the wheel to the corresponding height of the hollow part of the inner ring of the hub of the wheel and is stuck in the corresponding locating pin 201, thereby realizing the rapid positioning operation of the wheel, which is more convenient and efficient. The utility model can realize the limiting and fixing operation of aircraft wheels of various specifications and outer diameters through the limiting groove 203 of the stepped arc structure, and it is more applicable.

[0019] According to another embodiment of the present invention, Figure 1 and Figure 2 As shown, a telescopic push rod 207 is provided on the fixed plate 100, and a push rod 208 is provided at the end of the telescopic push rod 207. There are two telescopic push rods 207, which are symmetrically arranged on the fixed plate 100. There are two fixed cylinders 204, which are symmetrically arranged on the fixed plate 100. The angle between the adjacent fixed cylinders 204 and the telescopic push rods 207 is 90 degrees. The cross-design of the two fixed cylinders 204 and the two telescopic push rods 207 and the symmetrical arrangement between the two fixed cylinders 204 themselves and the two telescopic push rods 207 themselves can not only ensure the firm support, fixation and position limiting of the tire of the wheel, but also realize the stable and convenient upward ejection of the repaired wheel, which greatly improves the maintenance efficiency of the wheel and makes the operation more convenient. It should be noted here that in the positioning support During the operation, the output rod of the telescopic push rod 207 is always in a retracted state. During the wheel maintenance process, the upper part of the push rod 208 is always separated from the lower part of the tire of the wheel. When the maintenance is completed, the output rod of the telescopic push rod 207 is started to extend to push the push rod 208 upward to push the wheel out of the outer side of the positioning pin 201, which is more convenient and labor-saving. In this process, the compressed spring 205 will overcome the gravity of the wheel and return to its initial state under the effect of the output rod of the telescopic push rod 207 extending. In this process, the restoring elastic force of the spring 205 can also cooperate with the effect of the output rod of the telescopic push rod 207 extending to complete the lifting work of the wheel, which also reduces the pressure on the output rod of the telescopic push rod 207 to a certain extent, improves the service life of the telescopic push rod 207, and is more convenient.

[0020] The use of the utility model:

[0021] First of all, it should be made clear that the positioning bracket involved in the utility model is mainly used for auxiliary positioning operations during the maintenance of cylindrical objects. The utility model takes the maintenance of aircraft wheels as an example to explain its usage method in detail. When it is necessary to repair and maintain the disassembled wheel, the operator places the tire of the wheel in the corresponding limit groove 203 with the help of a lifting device. The gravity of the wheel itself will press the fixing rod 206 to compress the spring 205. The compressed spring 205 will move the fixing rod 206 downward with the wheel until it moves downward with the wheel to the corresponding height of the hollow part of the inner ring of the wheel hub and is stuck in the corresponding positioning pin 201, thereby realizing the rapid positioning operation of the wheel. Then the operator starts the output rod of the telescopic push rod 207 to extend it to the lower part of the push rod 208 to contact the lower part of the wheel, and then the maintenance operation can be carried out. After the maintenance is completed, continue to start The output rod of the movable telescopic push rod 207 extends to push the push rod 208 upward to push the wheel out of the outer side of the positioning pin 201, which is more convenient and labor-saving. In this process, the compressed spring 205 can overcome the gravity of the wheel and return to its initial state under the action of the output rod of the telescopic push rod 207 extending. In this process, the restoring elastic force of the spring 205 can also cooperate with the output rod of the telescopic push rod 207 to extend to complete the lifting work of the wheel, which to a certain extent also reduces the pressure on the output rod of the telescopic push rod 207 and increases the service life of the telescopic push rod 207. The utility model can realize convenient, stable and firm support and fixing operations for wheels of various specifications and diameters through the universal positioning mechanism 200, can be used for positioning wheels of various specifications, greatly improves the maintenance and inspection efficiency of the wheel, is more practical, facilitates subsequent storage and management, and is more convenient to operate.

[0022] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A positioning bracket for wheel maintenance, comprising a fixed plate (100) arranged on the upper part of a movable bracket, characterized in that: The fixed plate (100) is provided with a universal positioning mechanism (200), the universal positioning mechanism (200) comprising a positioning pin (201) for positioning the inner ring of the wheel and a limiting plate (202) provided on the fixed plate (100) for limiting the outer ring of the wheel hub of the wheel, the positioning pin (201) being a truncated cone structure with a lower diameter greater than an upper diameter, and the limiting plate (202) being provided with a plurality of limiting grooves (203) for limiting the tires of wheels of different diameters.

2. The wheel maintenance positioning bracket according to claim 1, characterized in that: A fixing cylinder (204) is obliquely arranged on the fixing plate (100) located outside the positioning pin (201), the axis of the fixing cylinder (204) corresponds to the taper of the positioning pin (201), a spring (205) is arranged inside the fixing cylinder (204), a fixing rod (206) parallel to the axial direction of the fixing cylinder (204) is arranged on the upper part of the spring (205), the limiting plate (202) is arranged on the upper part of the fixing rod (206), and the plane where the lower part of the limiting plate (202) is located is parallel to the plane where the upper part of the push rod (208) is located.

3. The wheel maintenance positioning bracket according to claim 2, characterized in that: The limiting groove (203) is a stepped arc structure.

4. The wheel maintenance positioning bracket according to claim 3, characterized in that: A telescopic push rod (207) is provided on the fixed plate (100), and a push rod (208) is provided at the end of the telescopic push rod (207).

5. The wheel maintenance positioning bracket according to claim 4, characterized in that: There are two telescopic push rods (207), which are symmetrically arranged on the fixed plate (100).

6. The wheel maintenance positioning bracket according to claim 5, characterized in that: There are two fixed cylinders (204), which are symmetrically arranged on the fixed plate (100), and the angle between adjacent fixed cylinders (204) and the telescopic push rods (207) is 90 degrees.

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