Aircraft brake disc thermal barrier assembly with life indication function

Abstract

The application discloses a kind of aviation brake wheel heat insulation components with life indicating function, including indicating rod, stainless steel wire, first heat insulation pad, heat insulation ring, second heat insulation pad, nut, gasket, circular heat insulation pad and rivet, the heat insulation ring is equipped with the hole, the first heat insulation pad, second heat insulation pad is circular arc, the first heat insulation pad, second heat insulation pad is equipped with through hole with the hole corresponding position, the diameter of the through hole on the first heat insulation pad is less than the diameter of the through hole on the second heat insulation pad, the indicating rod is sequentially passed through second heat insulation pad, heat insulation ring and first heat insulation pad by through hole, the indicating rod has thread, the nut is locked with thread and indicating rod, the first heat insulation pad and second heat insulation pad are connected together by riveting form with heat insulation ring, the first heat insulation pad and second heat insulation pad are arranged, indicating rod is installed on heat insulation pad, so that heat insulation component not only has heat insulation effect, also play the role of brake disc, brake pad wear indication.

Description

Technical Field

[0001] This invention relates to the field of aircraft brake wheel technology, and in particular to an aircraft brake wheel heat insulation component with a life indication function. Background Technology

[0002] Currently, according to professional technical standards, aircraft brake wheels are designed with heat insulation components to prevent brake temperature from damaging non-metallic parts inside the hydraulic or pneumatic piston chamber. Existing heat insulation components generally consist of heat insulation pads riveted to heat insulation rings. The heat insulation pads correspond to the hydraulic or pneumatic piston chambers and serve a heat insulation function. The rivets ensure that the heat insulation pads will not detach during use due to the harsh environment during takeoff, landing, support, and braking of the aircraft. Existing heat insulation components only serve a heat insulation function and do not have any additional functions.

[0003] During the design of the brake system, the indicator function for brake disc and brake pad wear must also be considered. Existing indicator rods for wear indication are mostly designed as an integral and detachable structure with the brake system's pressure plate. The indicator rod passes through the through hole on the heat insulation component, which is convenient for indication and does not affect the replacement of brake disc and brake pad. However, in actual use, there are problems such as the field not knowing how to replace the indicator rod, how to prevent loosening after replacement, and whether the replaced indicator rod can still guarantee the original function. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides an aircraft brake wheel heat insulation component with a lifespan indication function.

[0005] This invention discloses the following technical solution: a heat insulation component for an aircraft brake wheel with a lifespan indication function, comprising an indicator rod, a stainless steel wire, a first heat insulation pad, a heat insulation ring, a second heat insulation pad, a nut, a washer, a circular heat insulation pad, and a rivet. The heat insulation ring has a through hole. The first and second heat insulation pads are arc-shaped, and their positions correspond to two pistons. The first and second heat insulation pads have through holes corresponding to the through holes. The diameter of the through hole on the first heat insulation pad is smaller than the diameter of the through hole on the second heat insulation pad. The indicator rod has a round boss at its tail. The diameter of the round boss is smaller than the diameter of the through hole and the through hole on the second heat insulation pad, and the diameter of the round boss is larger than the diameter of the through hole on the first heat insulation pad. The indicator rod passes through the through hole in sequence through the second heat insulation pad, the heat insulation ring, and the first heat insulation pad. The end face of the round boss of the indicator rod abuts against the first heat insulation pad. The indicator rod has threads, and the nut engages with the threads to lock the indicator rod. The first heat insulation pad and the second heat insulation pad are connected to the heat insulation ring by riveting. The round heat insulation pad, the first heat insulation pad, and the second heat insulation pad are all heat insulation pads.

[0006] Furthermore, the gasket is fitted onto the indicator rod between the nut and the first heat-insulating pad.

[0007] Furthermore, the indicator rod is provided with small holes, and the nut has three small holes evenly distributed on its hexagonal surface. The stainless steel wire passes through the small holes to lock the nut and the indicator rod together.

[0008] Furthermore, the rivet is a countersunk rivet, and the rivet hole is a tapered hole.

[0009] Beneficial effects: Compared with the prior art, the heat insulation component of the present invention is provided with an arc-shaped first heat insulation pad and a second heat insulation pad, and the indicator rod for wear indication is installed on the heat insulation pad. This makes the heat insulation component not only heat insulation, but also serve as an indicator of the wear of the brake disc and brake pad of the braking device. The indicator rod is installed in a flexible position, which solves the problem of inconvenience in replacing the indicator rod. In addition, the indicator rod is designed to prevent loosening, which effectively prevents it from coming loose. The installation is simple, quick, firm and reliable. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a thermal insulation component in the prior art;

[0011] Figure 2 This is a schematic diagram of the structure of the aircraft brake wheel heat insulation component with life indication function according to the present invention;

[0012] In the diagram: 1-Indicator rod, 2-Stainless steel wire, 3-First heat insulation pad, 4-Heat insulation ring, 5-Second heat insulation pad, 6-Nut, 7-Washer, 8-Circular heat insulation pad, 9-Rivet, 10-Through hole. Detailed Implementation

[0013] like Figure 1 As shown, the heat insulation component of the existing aircraft braking device is a separate functional component, generally a circular heat insulation pad 8 riveted to the heat insulation ring 4 by rivets 9. The position of the circular heat insulation pad 8 corresponds to the hydraulic or pneumatic piston chamber, and plays a role in heat insulation. The existing indicator rod mostly adopts the design of connecting to the pressure plate. The heat insulation component is designed with a through hole 10 for the indicator rod. The indicator rod passes through the heat insulation component and plays a role in indicating. Its installation is limited by the position of the connection hole of the pressure plate. This structure is not conducive to the replacement and installation of the indicator rod.

[0014] like Figure 2As shown, an aircraft brake wheel heat insulation assembly with life indication function includes an indicator rod 1, a stainless steel wire 2, a first heat insulation pad 3, a heat insulation ring 4, a second heat insulation pad 5, a nut 6, a washer 7, a circular heat insulation pad 8, and a rivet 9. The heat insulation ring 4 has a through hole 10. To facilitate the installation of the indicator rod 1, the small circular heat insulation pads 8 on both sides of the heat insulation ring 4, corresponding to the pistons, are designed as arc-shaped first heat insulation pads 3 and second heat insulation pads 5 arranged along the heat insulation ring 4, which can simultaneously correspond to the positions of the two pistons. The first heat insulation pads 3 and 5 have through holes at positions corresponding to the through hole 10. The diameter of the through hole on the first heat insulation pad 3 is smaller than the diameter of the through hole on the second heat insulation pad 5. The tail of the indicator rod 1 has a circular boss, the diameter of which is smaller than that of the through hole 10 and the second heat insulation pad. The diameter of the through hole on pad 5 is larger than the diameter of the through hole on the first heat insulation pad 3. The indicator rod 1 passes through the through hole in sequence through the second heat insulation pad 5, the heat insulation ring 4 and the first heat insulation pad 3. The end face of the round boss of the indicator rod 1 abuts against the first heat insulation pad 3. The indicator rod 1 has threads, and the nut 6 engages with the threads to lock the indicator rod 1. The first heat insulation pad 3 and the second heat insulation pad 5 are connected to the heat insulation ring 4 by rivets 9, which plays a role in heat insulation and effectively blocks the heat of the brake disc and brake pad from being transferred to the piston chamber of the brake device. The design of the position of the indicator rod 1 is only related to the position of the heat insulation pad. The position and direction can be adjusted according to the design needs, which facilitates the replacement and installation of the indicator rod 1. The above-mentioned round heat insulation pad 8, the first heat insulation pad 3 and the second heat insulation pad 5 are all heat insulation pads.

[0015] The gasket 7 is fitted onto the indicator rod 1 between the nut 6 and the first heat insulation pad 3 to prevent the nut 6 from loosening. The indicator rod 1 is also provided with small holes. The nut 6 has three small holes evenly distributed on its hexagonal surface. The stainless steel wire 2 passes through the small holes to lock the nut 6 and the indicator rod 1, preventing the nut 6 from loosening and the indicator rod 1 from coming off. The rivet 9 is a countersunk rivet with a tapered riveting hole to ensure that the rivet 9 will not protrude from the heat insulation pad after riveting and will not interfere with other parts such as the piston, brake disc, and brake pad.

[0016] The heat insulation component of this invention not only ensures the heat insulation function, but also serves as an indicator of the wear of the brake disc and brake pads of the braking device. The indicator rod 1 has a flexible installation position and is designed to prevent loosening, effectively preventing it from coming loose. The installation is simple, quick, and reliable.

[0017] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heat insulation assembly for an aircraft brake wheel with a lifespan indication function, comprising an indicator rod (1), a stainless steel wire (2), a first heat insulation pad (3), a heat insulation ring (4), a second heat insulation pad (5), a nut (6), a washer (7), a circular heat insulation pad (8), and a rivet (9), wherein the circular heat insulation pad (8) is riveted to the heat insulation ring (4) by the rivet (9), the position of the circular heat insulation pad (8) corresponds to the piston chamber, and the heat insulation ring (4) is provided with a through hole (10), characterized in that: The first heat insulation pad (3) and the second heat insulation pad (5) are arc-shaped. The positions of the first heat insulation pad (3) and the second heat insulation pad (5) correspond to the two pistons. The first heat insulation pad (3) and the second heat insulation pad (5) are provided with through holes at positions corresponding to the through hole (10). The diameter of the through hole on the first heat insulation pad (3) is smaller than the diameter of the through hole on the second heat insulation pad (5). The end of the indicator rod (1) is provided with a round boss. The diameter of the round boss is smaller than the diameter of the through hole (10) and the diameter of the through hole on the second heat insulation pad (5). The diameter of the round boss is larger than that of the first heat insulation pad. (3) The diameter of the through hole, the indicator rod (1) passes through the through hole in sequence through the second heat insulation pad (5), the heat insulation ring (4) and the first heat insulation pad (3), the round boss end face of the indicator rod (1) abuts against the first heat insulation pad (3), the indicator rod (1) has a thread, the nut (6) engages with the thread to lock the indicator rod (1), the first heat insulation pad (3) and the second heat insulation pad (5) are connected together with the heat insulation ring (4) by riveting with rivets (9), the above-mentioned round heat insulation pad (8), the first heat insulation pad (3) and the second heat insulation pad (5) are all heat insulation pads.

2. The aircraft brake wheel heat insulation assembly with life indication function according to claim 1, characterized in that: The gasket (7) is fitted onto the indicator rod (1) between the nut (6) and the first heat insulation pad (3).

3. The aircraft brake wheel heat insulation assembly with life indication function according to claim 1, characterized in that: The indicator rod (1) is also provided with small holes, and the nut (6) has three small holes evenly distributed on its hexagonal surface. The stainless steel wire (2) passes through the small holes to lock the nut (6) and the indicator rod (1).

4. The aircraft brake wheel heat insulation assembly with life indication function according to claim 1, characterized in that: The rivet (9) is a countersunk rivet, and the rivet hole is a tapered hole.

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