Aviation brake wheel heat insulation assembly with service life indication function

Abstract

An aviation brake airplane wheel heat insulation assembly with a service life indication function comprises an indication rod, a stainless steel wire, a first heat insulation pad, a heat insulation ring, a second heat insulation pad, a nut, a gasket, a round heat insulation pad and a rivet, the heat insulation ring is provided with a penetrating hole, and the first heat insulation pad and the second heat insulation pad are in an arc shape. Through holes are formed in the positions, corresponding to the penetrating holes, of the first heat insulation pad and the second heat insulation pad, the diameter of the through hole in the first heat insulation pad is smaller than that of the through hole in the second heat insulation pad, the indicating rod sequentially penetrates through the second heat insulation pad, the heat insulation ring and the first heat insulation pad through the through holes, and threads are arranged on the indicating rod. The first heat insulation pad and the second heat insulation pad are arranged, the indicating rod is installed on the heat insulation pads, so that the heat insulation assembly not only has a heat insulation function, but also has a heat insulation function, and the heat insulation effect of the indicating rod is improved. And the function of indicating the abrasion of the brake disc and the brake pad is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft brake wheels, and in particular to an aircraft brake wheel heat insulation component with a life indication function. Background Art

[0002] At present, according to the requirements of professional technical standards, thermal insulation components are designed for aircraft brake wheels to prevent brake temperature from damaging non-metallic parts in the hydraulic or pneumatic piston cavity. Existing thermal insulation components are generally thermal insulation pads riveted to thermal insulation rings by rivets. The thermal insulation pads correspond to the hydraulic or pneumatic piston cavity to play a thermal insulation role. The rivets ensure that the thermal insulation pads will not fall out during use due to the harsh environment during the take-off, landing, support and braking of the aircraft. The existing thermal insulation components only play a thermal insulation role and have no other functions.

[0003] In the design process of the brake device, the wear indication function of the brake disc and brake pad also needs to be considered. The existing indicator rod for wear indication is mostly designed as a detachable structure installed integrally with the pressure plate of the brake device. The indicator rod passes through the hole on the heat insulation component, which is convenient for indication without affecting the replacement of the brake disc and brake pad. However, in actual use, there will be problems such as the field not understanding how to replace the indicator rod, how to prevent loosening after replacement, and whether the indicator rod after replacement can still guarantee the original function. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides an aircraft brake wheel thermal insulation component with a life indication function.

[0005] The present invention discloses the following technical scheme: an aircraft brake wheel insulation component with a life indication function, comprising an indication rod, a stainless steel wire, a first insulation pad, an insulation ring, a second insulation pad, a nut, a gasket, a circular insulation pad and a rivet, wherein the insulation ring is provided with a through hole, the first insulation pad and the second insulation pad are arc-shaped, the positions of the first insulation pad and the second insulation pad correspond to two pistons, the first insulation pad and the second insulation pad are provided with through holes at positions corresponding to the through holes, the diameter of the through hole on the first insulation pad is smaller than the diameter of the through hole on the second insulation pad, and the indication A circular boss is provided at the tail of the indicator rod, and the diameter of the circular boss is smaller than the diameter of the through hole and the through hole on the second thermal insulation pad, and the diameter of the circular boss is larger than the diameter of the through hole on the first thermal insulation pad. The indicator rod passes through the second thermal insulation pad, the thermal insulation ring and the first thermal insulation pad in sequence through the through hole, and the end face of the circular boss of the indicator rod abuts against the first thermal insulation pad. The indicator rod is provided with threads, and the nut cooperates with the threads to lock the indicator rod. The first thermal insulation pad and the second thermal insulation pad are connected together with the thermal insulation ring by riveting, and the above-mentioned circular thermal insulation pad, the first thermal insulation pad and the second thermal insulation pad are all thermal insulation pads.

[0006] Furthermore, the gasket is sleeved on the indicator rod and located between the nut and the first thermal insulation pad.

[0007] Furthermore, the indicator rod is provided with a small hole, and three small holes are evenly distributed on the hexagon of the nut. The stainless steel wire passes through the small holes to lock the nut and the indicator rod.

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

[0009] Beneficial effect: Compared with the prior art, the thermal insulation component of the present invention is provided with a first arc-shaped thermal insulation pad and a second thermal insulation pad, and the indicator rod for wear indication is installed on the thermal insulation pad, so that the thermal insulation component not only has a thermal insulation effect, but also plays a role in indicating the wear of the brake disc and brake pad of the brake device. The installation position of the indicator rod is flexible, which solves the problem of inconvenient replacement of the indicator rod, and the indicator rod is designed to prevent loosening, which effectively prevents it from loosening. The installation is simple, fast, firm and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the heat insulation component of the prior art; Figure 2 It is a schematic structural diagram of the aircraft brake wheel heat insulation assembly with life indication function of the present invention; In the figure: 1-indicator rod, 2-stainless steel wire, 3-first thermal insulation pad, 4-thermal insulation ring, 5-second thermal insulation pad, 6-nut, 7-washer, 8-round thermal insulation pad, 9-rivet, 10-through hole. DETAILED DESCRIPTION

[0011] like Figure 1 As shown, the thermal insulation component of the aircraft brake device in the prior art is a single functional component, which is generally a circular thermal insulation pad 8 riveted to the thermal insulation ring 4 by rivets 9. The position of the circular thermal insulation pad 8 corresponds to the hydraulic or pneumatic piston cavity to play a thermal insulation role; the existing indicator rod is mostly designed to be connected to the clamping plate, and a through hole 10 for the indicator rod is designed on the thermal insulation component. The indicator rod passes through the thermal insulation component to play an indicating function. Its installation is limited by the position of the connection hole of the clamping plate. This structure is not conducive to the replacement and installation of the indicator rod.

[0012] like Figure 2As shown, an aircraft brake wheel insulation component with a life indication function includes an indicator rod 1, a stainless steel wire 2, a first insulation pad 3, an insulation ring 4, a second insulation pad 5, a nut 6, a gasket 7, a circular insulation pad 8 and a rivet 9. The insulation ring 4 is provided with a through hole 10. To facilitate the installation of the indicator rod 1, the single small circular insulation pads 8 corresponding to the pistons on both sides of the insulation ring 4 are designed to be a first insulation pad 3 and a second insulation pad 5 arranged along the insulation ring 4 in an arc shape that can correspond to the positions of two pistons at the same time. The first insulation pad 3 and the second insulation pad 5 are provided with through holes at positions corresponding to the through holes 10, and the diameter of the through holes on the first insulation pad 3 is smaller than the diameter of the through holes on the second insulation pad 5. The tail of the indicator rod 1 is provided with a circular boss, and the diameter of the circular boss is smaller than the diameter of the through holes 10 and the second insulation pad 5. The diameter of the through hole on the pad 5, the diameter of the circular boss is larger than the diameter of the through hole on the first thermal insulation pad 3, the indicator rod 1 passes through the second thermal insulation pad 5, the thermal insulation ring 4 and the first thermal insulation pad 3 in sequence through the through hole, the end face of the circular boss of the indicator rod 1 abuts against the first thermal insulation pad 3, the indicator rod 1 is threaded, and the nut 6 cooperates with the thread to lock the indicator rod 1, the first thermal insulation pad 3 and the second thermal insulation pad 5 are connected to the thermal 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 thermal insulation pad, and the position and direction can be adjusted according to the design requirements to facilitate the replacement and installation of the indicator rod 1. The above-mentioned circular thermal insulation pad 8, the first thermal insulation pad 3 and the second thermal insulation pad 5 are all thermal insulation pads.

[0013] The gasket 7 is mounted on the indicator rod 1 and located between the nut 6 and the first thermal insulation pad 3 to prevent the nut 6 from loosening; the indicator rod 1 is also provided with small holes, and 3 small holes are evenly distributed on the hexagon of the nut 6. The stainless steel wire 2 passes through the small holes to lock the nut 6 and the indicator rod 1 to prevent the nut 6 from loosening and the indicator rod 1 from falling out; the rivet 9 is a countersunk rivet, and the riveting hole is a tapered hole to ensure that the rivet 9 will not protrude from the thermal insulation pad after riveting, and will not interfere with other parts such as the piston, brake disc, brake pad, etc.

[0014] The heat insulation component of the present invention not only ensures the heat insulation function, but also plays the role of indicating the wear of the brake disc and brake pad of the brake device. The installation position of the indicator rod 1 is flexible, and the indicator rod 1 is designed to prevent loosening, which effectively prevents it from loosening. The installation is simple, fast, firm and reliable.

[0015] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aircraft brake wheel insulation component with a life indication function, comprising an indication rod (1), a stainless steel wire (2), a first insulation pad (3), an insulation ring (4), a second insulation pad (5), a nut (6), a gasket (7), a circular insulation pad (8) and a rivet (9), wherein the insulation ring (4) is provided with a through hole (10), and is characterized in that: The first thermal insulation pad (3) and the second thermal insulation pad (5) are arc-shaped, the positions of the first thermal insulation pad (3) and the second thermal insulation pad (5) correspond to the two pistons, through holes are provided on the first thermal insulation pad (3) and the second thermal insulation pad (5) at positions corresponding to the through holes (10), the diameter of the through hole on the first thermal insulation pad (3) is smaller than the diameter of the through hole on the second thermal insulation pad (5), a round boss is provided at the tail of the indicator rod (1), the diameter of the round boss is smaller than the diameter of the through hole on the through hole (10) and the second thermal insulation pad (5), and the diameter of the round boss is larger than the diameter of the first thermal insulation pad ( 3), the indicating rod (1) passes through the second thermal insulation pad (5), the thermal insulation ring (4) and the first thermal insulation pad (3) in sequence through the through hole, the circular boss end face of the indicating rod (1) abuts against the first thermal insulation pad (3), the indicating rod (1) is provided with a thread, the nut (6) cooperates with the thread to lock the indicating rod (1), the first thermal insulation pad (3) and the second thermal insulation pad (5) are connected to the thermal insulation ring (4) by riveting with rivets (9), and the circular thermal insulation pad (8), the first thermal insulation pad (3) and the second thermal insulation pad (5) are all thermal insulation pads.

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

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

Images