阅读说明：本技术 一种航空机轮组合式刹车盘 (Combined brake disc of aircraft wheel ) 是由 张万顺 王学锋 邓倩 娄金涛 孟帅 李硕 于 2021-08-25 设计创作，主要内容包括：一种航空机轮组合式刹车盘,包括压紧盘组件、动盘组件和静盘组件。压紧盘组件、动盘组件和静盘组件中的刹车片均包括碳/碳刹车片和碳/陶刹车片,并将各碳/碳刹车片和碳/陶刹车片按规律间隔排布。在排布时,以M代表碳/碳刹车片,以N代表碳/陶刹车片。压紧盘组件中,碳/碳刹车片和碳/陶刹车片的排布方式为MNMN…；在静盘组件中,碳/碳刹车片和碳/陶刹车片的排布方式为MNNMNN…；在动盘组件中,碳/碳刹车片和碳/陶刹车片的排布方式为MMNMMN…。本发明将各刹车盘组件中不同材质刹车片按照不同数量比例配装,以弥补各刹车盘刹车力矩的不足,平衡单一摩擦材料的刹车盘在使用过程中存在的问题,使刹车力矩整体平稳。(The utility model provides an aircraft wheel combination formula brake disc, includes gland plate subassembly, driving disk subassembly and quiet dish subassembly. The brake pads in the pressure disc assembly, the movable disc assembly and the static disc assembly comprise carbon/carbon brake pads and carbon/ceramic brake pads, and the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged at regular intervals. When the brake pad is arranged, M represents a carbon/carbon brake pad, and N represents a carbon/ceramic brake pad. In the compact disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNMN …; in the static disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNNMNN …; in the rotor assembly, the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged in the manner of MMNMMN …. The brake pads made of different materials in each brake disc component are assembled according to different quantity proportions so as to make up the defect of braking torque of each brake disc, balance the problems of the brake disc made of a single friction material in the using process and enable the braking torque to be stable as a whole.)

1. A combined brake disc of an aircraft wheel comprises a compression disc assembly, a movable disc assembly and a static disc assembly, wherein the compression disc assembly, the movable disc assembly, the static disc assembly, the movable disc assembly, the fixed disc assembly, the static disc assembly and the movable disc assembly are sequentially attached to a brake shell of a brake device, and key grooves in the inner circumference of the compression disc assembly and the static disc assembly are matched with convex keys of the brake shell, so that the circumferential position of the static disc assembly is fixed; the movable disc assembly can rotate along with the airplane wheel;

the method is characterized in that: the compact disc assembly, the movable disc assembly and the static disc assembly are sequentially arranged in the sequence of 1 compact disc assembly, 1 movable disc assembly, 1 static disc assembly, 1 movable disc assembly and 1 compact disc assembly; the brake pads in the pressing disc assembly, the movable disc assembly and the static disc assembly comprise carbon/carbon brake pads and carbon/ceramic brake pads, and the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged at regular intervals; when the carbon/ceramic brake pads are arranged, M represents a carbon/carbon brake pad, and N represents a carbon/ceramic brake pad; in the compact disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNMN …; in the static disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNNMNN …; in the rotor assembly, the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged in the manner of MMNMMN ….

2. The aircraft wheel assembly brake disc of claim 1, wherein the gland plate assembly comprises 1 gland plate framework and a plurality of gland plate brake pads; the ratio of the carbon/carbon brake pad to the carbon/ceramic brake pad in the compact disc brake pad is 1: 1; key grooves matched with the convex keys of the brake shell are uniformly distributed on the inner circumferential surface of the pressing disc framework; and the pressing disc brake pads are respectively fixed on one surface of the pressing disc framework.

3. An aircraft wheel combined brake disc as claimed in claim 2, wherein the brake pad mounting through holes are uniformly distributed on a reference circle with 392mm diameter and a reference circle with 308mm diameter of the framework disc surface of the pressing disc; each group of through holes are symmetrically distributed on two sides of the key groove; the included angles between the central line of the through hole positioned on the same side of the key groove and the circumferential symmetric line of the key groove are all 4.5 degrees.

4. An aircraft wheel assembly brake disc as claimed in claim 1, wherein the static disc assembly 2 comprises 1 static disc skeleton and a plurality of static disc brake pads 7; a plurality of key grooves are uniformly distributed on the inner circumferential surface of the static disc framework; the ratio of the carbon/carbon brake block M to the carbon/ceramic brake block N in the static disc brake block is 1: 2; the plurality of static brake pads are divided into two groups and are respectively arranged on two surfaces of the static disc framework, and the positions of the carbon/carbon vehicle pads respectively positioned on the two surfaces of the static disc framework correspond to each other, and the positions of the carbon/ceramic vehicle pads positioned on the two surfaces of the static disc framework correspond to each other.

5. An aircraft wheel combined brake disc as claimed in claim 4, wherein a 392mm diameter graduated circle and a 308mm diameter graduated circle of the static disc framework disc surface are respectively and uniformly provided with a plurality of groups of through holes for fixing each brake pad; each group of 2 through holes are symmetrically distributed on two sides of the key groove; the center distance of the two through holes in each group is 25 mm.

6. An aircraft wheel assembly brake rotor as claimed in claim 1, wherein said rotor assembly includes 1 rotor frame and a plurality of rotor blades; a plurality of key grooves are uniformly distributed on the outer circumferential surface of the movable disc framework; the ratio of the carbon/carbon brake pad to the carbon/ceramic brake pad in the movable disc brake pad is 2: 1; dividing each moving disc brake pad into two groups, respectively installing the two groups on two surfaces of the moving disc framework, and enabling the positions of the moving disc brake pads respectively positioned on different surfaces of the moving disc framework to correspond to each other; the positions of the carbon/carbon vehicle sheets on the two surfaces of the movable disc framework correspond to each other, and the positions of the carbon/ceramic vehicle sheets on the two surfaces of the movable disc framework correspond to each other.

7. An aircraft wheel combined brake disc as claimed in claim 6, wherein a plurality of through holes for fixing each brake pad are uniformly distributed on a graduated circle with the disc surface diameter of 382mm and the diameter of 310 mm.

8. An aircraft wheel assembly brake rotor as claimed in claim 6, wherein the angle between the two side edges of each rotor disc brake rotor is 24 °.

9. An aircraft wheel assembly brake rotor as claimed in claim 6, wherein the total weight of the brake disc assembly is 16.5 kg.

Technical Field

The invention relates to the field of aircraft brake, in particular to an aircraft wheel brake disc consisting of block-shaped brake pads.

Background

The airplane brake wheel comprises a wheel component and a brake device, and the wheel component and the brake device are mounted on a main landing gear shaft of the airplane together. The airplane wheel assembly is mainly used for bearing the weight of the airplane and supporting the airplane; the brake device is mainly used for braking the airplane. The brake device mainly comprises a cylinder seat, a piston assembly, a brake shell, a pressing disc assembly, a movable disc assembly, a static disc, a bearing disc, a steel bearing disc and the like. When an airplane is braked, brake hydraulic oil enters the cylinder seat under the action of brake pressure to push the piston to move axially, the compression disc compresses the static disc, the pressure-bearing disc and the movable disc rotating along the random wheel, and each brake disc generates brake torque through friction of a friction surface to brake the airplane wheel.

The types of brake discs in the existing brake devices include: the steel brake disc component comprises: the friction part of the brake disc is made of powder metallurgy material; carbon/carbon brake disc assembly: the brake disc is an integral brake pad deposited by carbon/carbon composite materials; a carbon/ceramic brake disc assembly is provided, the brake disc being a unitary brake pad deposited from a carbon/ceramic composite material.

At present, carbon/carbon composite materials or carbon/ceramic composite materials are mostly used for friction surfaces of integral brake discs, but the brake discs formed by integral deposition have the advantages and the disadvantages: the braking torque of the brake disc made of the carbon/carbon composite material is characterized by high front and low back and trailing low-speed section trailing, as shown in figure 1, the external field uses high-speed section slipping and low-speed section braking fatigue. The braking torque of the brake disc made of the carbon/ceramic composite material is characterized in that the torque change rate of the front low and the rear high and low-speed sections is large, as shown in figure 2, the braking of the low-speed section used in an external field is sensitive, the airplane is easy to have the phenomenon of nodding, and the vibration problem of the low-speed braking is solved.

When there is initial friction in present integral brake disc, braking torque satisfies the requirement, uses the later stage, and friction torque reduces, and the phenomenon that wearing and tearing are accelerated. The main reason is caused by the uneven internal and external density and friction material when the integral brake disc is deposited.

The utility model discloses in the utility model with patent number CN20755465U provide an aircraft wheel steel brake disc driving disk, all have radial convex lug with 8 ~ 12 sectorial pieces on the outer arc surface through being located each sectorial piece both ends respectively. Two side surfaces of each sector are respectively connected with side surfaces of other sectors. When the segments are connected, a groove is formed between the lugs of the ends of two adjacent segments, a key groove is respectively arranged in each groove through a rivet, and the segments are connected and combined through the key grooves to form the annular steel brake disc of the aircraft wheel. The utility model adopts the steel disc which has the characteristic of high density and contradicts with the light weight required by newly-developed airplanes. The utility model discloses a two side surfaces of well each segment are connected with the side surface of other segments respectively, if the installation of a segment goes wrong, can influence the stability of whole brake disc.

A steel brake disc assembly is used in a certain type of machine and comprises a static disc assembly, a movable disc assembly, a pressure disc assembly and a bearing disc assembly, wherein each assembly consists of a framework, a sector block and a rivet. The sector blocks are all made of powder metallurgy materials, and the powder metallurgy brake pad has the defects of large weight, short service life, poor friction coefficient stability and easiness in deformation and bonding at high temperature.

Disclosure of Invention

The invention provides a combined brake disc for an airplane wheel, which aims to overcome the defects that the braking torque of the brake disc in the prior art is characterized by high front and low back, trailing at a low speed section, heavy weight, short service life, poor stability of friction coefficient and easy deformation and bonding at high temperature.

The invention comprises a pressing disc component, a movable disc component and a static disc component, wherein the pressing disc component, the movable disc component, the static disc component and the movable disc component are sequentially attached to each other in sequence and are arranged on a brake shell of a brake device, and key grooves in the inner circumferences of the pressing disc component and the static disc component are matched with convex keys of the brake shell, so that the circumferential position of the static disc component is fixed; the movable disc assembly can rotate along with the wheel.

The invention is technically characterized in that: the compact disc assembly, the movable disc assembly and the static disc assembly are sequentially arranged in the sequence of 1 compact disc assembly, 1 movable disc assembly, 1 static disc assembly, 1 movable disc assembly and 1 compact disc assembly. The brake pads in the pressure disc assembly, the movable disc assembly and the static disc assembly comprise carbon/carbon brake pads and carbon/ceramic brake pads, and the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged at regular intervals. When the brake pad is arranged, M represents a carbon/carbon brake pad, and N represents a carbon/ceramic brake pad. In the compact disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNMN …; in the static disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNNMNN …; in the rotor assembly, the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged in the manner of MMNMMN ….

The pressing disc assembly comprises 1 pressing disc framework and a plurality of pressing disc brake pads. The ratio of the carbon/carbon brake pad to the carbon/ceramic brake pad in the compact disc brake pad is 1: 1. And key grooves matched with the convex keys of the brake shell are uniformly distributed on the inner circumferential surface of the pressing disc framework. And the pressing disc brake pads are respectively fixed on one surface of the pressing disc framework.

The diameter of the disc surface of the framework of the pressing disc is 392mm, and the diameter of the disc surface of the framework of the pressing disc is 308mm, and the installation through holes of the brake pads are uniformly distributed on the reference circle; each group of through holes are symmetrically distributed on two sides of the key groove; the included angles between the central line of the through hole positioned on the same side of the key groove and the circumferential symmetric line of the key groove are all 4.5 degrees.

The static disc component 2 comprises 1 static disc framework and a plurality of static disc brake pads 7. A plurality of key grooves are uniformly distributed on the inner circumferential surface of the static disc framework. The ratio of the carbon/carbon brake block M to the carbon/ceramic brake block N in the static disc brake block is 1: 2. The plurality of static brake pads are divided into two groups and are respectively arranged on two surfaces of the static disc framework, and the positions of the carbon/carbon vehicle pads respectively positioned on the two surfaces of the static disc framework correspond to each other, and the positions of the carbon/ceramic vehicle pads positioned on the two surfaces of the static disc framework correspond to each other.

A plurality of groups of through holes for fixing each brake pad are respectively and uniformly distributed on a reference circle with the 392mm diameter of the disc surface of the static disc framework and a reference circle with the 308mm diameter; each group of 2 through holes are symmetrically distributed on two sides of the key groove; the center distance of the two through holes in each group is 25 mm.

The movable disc assembly comprises 1 movable disc framework and a plurality of movable disc brake pads. And a plurality of key grooves are uniformly distributed on the outer circumferential surface of the movable disc framework. The ratio of the carbon/carbon brake pad to the carbon/ceramic brake pad in the movable disc brake pad is 2: 1. And dividing the movable disc brake pads into two groups, respectively installing the two groups on the two surfaces of the movable disc framework, and enabling the positions of the movable disc brake pads respectively positioned on the different surfaces of the movable disc framework to correspond to each other. The positions of the carbon/carbon vehicle sheets on the two surfaces of the movable disc framework correspond to each other, and the positions of the carbon/ceramic vehicle sheets on the two surfaces of the movable disc framework correspond to each other.

And a plurality of through holes for fixing each brake pad are uniformly distributed on the reference circle with the diameter of 382mm and the diameter of 310mm on the disc surface of the movable disc framework.

The included angle between the two side edges of each movable disc brake pad is 24 degrees. The total weight of the brake disc assembly was 16.5 kg.

The brake pads made of different materials in each brake disc component are assembled according to different quantity proportions so as to make up the deficiency of the braking torque of each brake disc, make the braking torque integrally stable and balance the problems of the brake disc made of a single friction material in the using process.

The invention only comprises a static disc assembly, a movable disc assembly and a pressing disc assembly, and has no bearing disc. And the brake pad in each component is composed of a carbon/carbon composite brake pad and a carbon/ceramic composite brake pad according to a proportion. The carbon/carbon composite brake pad has the advantages of light weight, high specific strength and large specific heat, but has the defects of large early-stage braking moment and small later-stage braking moment. The carbon/ceramic composite brake pad has the advantages of light weight, high specific strength, large specific heat and stable mechanical property, but has the defects of small early-stage braking moment and large later-stage braking moment. Therefore, after the carbon/carbon composite brake pad and the carbon/ceramic composite brake pad which are made of two different materials are mixed and used according to a proportion, the friction characteristics of the two brake materials can be balanced, and the brake torque is kept in a stable state.

Compared with the prior art, the aircraft wheel brake disc structure composed of the block brake pads provided by the invention has the following characteristics:

the invention adopts different brake materials, overcomes the defects that the carbon/carbon brake disc has high front and low back brake torque, namely the front brake torque is large and the rear brake torque is small (shown in figure 1) and the carbon/ceramic brake disc has low front and back brake torque, namely the front brake torque is small and the rear brake torque is large (shown in figure 2) by adjusting the proportion of the carbon/carbon brake disc and the carbon/ceramic brake disc, ensures that the front brake torque and the rear brake torque of the integral brake disc keep the same level, namely the front brake torque and the rear brake torque to be stable, reduces the brake torque fluctuation and improves the performance stability of the brake disc, and is shown in figure 3.

The friction surface of the brake disc is formed by combining a plurality of small brake blocks, the brake blocks are fixed on the framework through rivets, the framework separates the brake blocks and is equivalent to a buffer pad, and the problem of brake vibration caused by direct transmission of brake torque and no buffer pad buffering of an integral brake disc of 90 percent can be solved.

Under the condition of the same brake disc process deposition, the invention adopts the sectional brake pad with small volume, small area and small thickness, so that the parameters of permeation materials, density and the like in the brake pad are more easily ensured to be consistent. According to the size of the specific brake pad, the brake disc of the aircraft wheel consisting of the block-shaped brake pads can ensure that the friction torque and the abrasion speed of 85-95% of the brake disc at the later stage of use are consistent with those at the initial stage.

The brake disc is integrated by assembling the brake pads, after the brake pads are deposited, the minimum later processing can be ensured, the problem that the planeness of the friction surface is not easy to ensure in the large-area integral brake disc machining and machining process is solved, the machining difficulty of the brake disc is reduced, the influence of machining on the friction performance of the brake pads is reduced, and the machining quality of the brake disc is improved.

The aircraft wheel brake disc structure formed by the block-shaped brake pads adopts the brake pads in a blocking mode, and the connection points between the brake pads and the brake disc framework are positioned on the disc surface of the brake pads, so that the control of the whole size of the brake disc is facilitated. In the use process, if some brake disc brake pad has irreparable damage, the whole set of brake pad does not need to be replaced, only the damaged brake pad is replaced, the resource waste can be reduced by 80-97% by single replacement, the maintenance cost is saved, and the economical efficiency is improved.

The brake pad adopted by the invention has small volume and small area, can effectively improve the permeability, and ensures that the parameters of the inner material, the outer material, the density and the like of the brake pad are consistent.

Drawings

FIG. 1 is a brake torque curve characteristic of a carbon/carbon brake disc.

Fig. 2 is a brake torque curve characteristic of a carbon/ceramic brake disc.

FIG. 3 shows braking torque curve characteristics of a carbon/carbon and carbon/ceramic brake pad in a proportional arrangement.

FIG. 4 is a schematic structural view of the brake disc assembly.

FIG. 5 is a schematic structural view of a pressure disc assembly; wherein fig. 5a is a front view and fig. 5b is a left side view of fig. 5 a.

FIG. 6 is a schematic view of the construction of the hold-down disk skeleton; fig. 6a is a front view, and fig. 6b is a side view of fig. 6 a.

FIG. 7 is a schematic structural view of a disc brake pad; fig. 7a is a front view, and fig. 7b is a side view of fig. 7 a.

FIG. 8 is a schematic structural view of a stationary disc assembly; fig. 8a is a front view, and fig. 8b is a side view of fig. 8 a.

FIG. 9 is a schematic structural view of a stationary disc skeleton; fig. 9a is a front view, and fig. 9b is a side view of fig. 9 a.

FIG. 10 is a schematic structural view of a static disc brake pad; wherein fig. 10a is a front view, and fig. 10b is a schematic view of a section a-a in fig. 10 a.

FIG. 11 is a schematic view of the construction of the cam plate assembly; fig. 11a is a front view, and fig. 11b is a side view of fig. 11 a.

FIG. 12 is a schematic view of the construction of the rotor frame; fig. 12a is a front view, and fig. 12b is a side view of fig. 12 a.

FIG. 13 is a schematic structural diagram of a brake rotor of the movable disc; fig. 13a is a front view, and fig. 13b is a side view of fig. 13 a.

In the figure: 1. a puck assembly; 2. a stationary disc assembly; 3. a movable plate assembly; 4. a pressing disc framework; 5 pressing the disc brake pad; 6, riveting; 7 static disc brake pads; 8. a stationary disc skeleton; 9. a movable disc framework; 10. and a movable disc brake pad.

Detailed Description

Example 1

The brake disc assembly of this embodiment is used in a brake device of a certain type, and as shown in fig. 4, the brake disc assembly includes 2 pressure disc assemblies 1, 3 movable disc assemblies 2 and 2 fixed disc assemblies 3. The brake disc assembly is sequentially attached to the brake shell of the brake device in the sequence of 1 hold-down disc assembly, 1 movable disc assembly, 1 static disc assembly, 1 movable disc assembly and 1 hold-down disc assembly, and the hold-down disc assembly and the inner circumferential key groove of the static disc assembly are matched with the convex key of the brake shell, so that the circumferential position of the static disc assembly is fixed; the movable disc assembly can rotate along with the wheel. In the embodiment, the static disc framework, the dynamic disc framework and the pressing disc framework are made of GH4169 high-temperature alloy materials. The brake pads in the pressure disc assembly, the movable disc assembly and the static disc assembly comprise carbon/carbon brake pads and carbon/ceramic brake pads, and the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged at regular intervals. The total weight of the brake disc assembly was 16.5 kg.

When the brake pad is arranged, M represents a carbon/carbon brake pad, and N represents a carbon/ceramic brake pad. In the compact disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNMN …; in the static disc assembly, the arrangement mode of the carbon/carbon brake pad and the carbon/ceramic brake pad is MNNMNN …; in the rotor assembly, the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged in the manner of MMNMMN ….

As shown in fig. 5, the pressure plate assembly 1 includes 1 pressure plate frame 4 and 10 pressure plate brake pads 5. The outer diameter of the pressing disc framework is 410mm, the inner diameter of the pressing disc framework is 260mm, and the thickness of the pressing disc framework is 6 mm. The inner circumferential surface of the pressing disc framework is evenly provided with 10 key grooves used for being matched with convex keys of a brake shell, the width of each key groove is 14mm, and the depth of each key groove is 12.5 mm. 10 groups of through holes are uniformly distributed on a reference circle with the diameter of 392mm and a reference circle with the diameter of 308mm on the surface of the framework of the pressing disc respectively and used for fixing each brake pad; each group of 2 through holes with the diameter of 6mm are symmetrically distributed on two sides of the key groove and used for fixing each brake pad; the included angles between the central line of the through hole positioned on the same side of the key groove and the circumferential symmetric line of the key groove are all 4.5 degrees.

Among the compact disc brake pads, 5 pads are carbon/carbon brake pads, and 5 pads are carbon/ceramic brake pads. The outer radius of each pressing disc brake pad is 204.5mm, the inner radius is 145mm, and the thickness is 7 mm; the included angle of the two side edges of each pressing disc brake pad is 36 degrees. The brake pads of the pressing disc are respectively fixed on one surface of the pressing disc framework 4 through rivets and are arranged in a mode of MNMN ….

As shown in fig. 8, the static disc assembly 2 includes 1 static disc frame 8 and 30 static disc brake pads 7. The outer diameter of the static disc framework is 410mm, the inner diameter of the static disc framework is 260mm, and the thickness of the static disc framework is 4.5 mm. The inner circumferential surface of the static disc framework is uniformly provided with 15 key grooves, the width of each key groove is 12mm, and the depth of each key groove is 12.5 mm. 15 groups of through holes are uniformly distributed on a graduated circle with the disc surface diameter of 392mm of the static disc framework 8 for fixing each brake pad; each group of 2 through holes are symmetrically distributed on two sides of the key groove; the center distance of the two through holes in each group is 40 mm. 15 groups of through holes matched with a convex key of a brake shell are uniformly distributed on a reference circle with the disc surface diameter of 308mm of the static disc framework; the diameter of each through hole is 6 mm; the 2 through-holes of every group are symmetrically distributed in the keyway both sides, and the centre-to-centre spacing of two through-holes in every group is 25 mm.

The static disc brake pad is fan-shaped, the outer surface of the static disc brake pad is an arc surface, and the outer diameter of the arc surface is 200 mm; the included angle between the two side edges of the fan-shaped sheet is 22.5 degrees; the inner surface of the brake pad is a plane, and the distance between the plane and the top point of the outer circumference cambered surface is 62 mm. The thickness of each brake pad is 7 mm. Among the 30 static disc brake pads, 10 carbon/carbon brake pads are used, and 20 carbon/ceramic brake pads are used. During assembly, the 30 static brake pads are divided into two groups and respectively arranged on two surfaces of the static disc framework 8, and the positions of the static disc brake pads respectively positioned on different surfaces of the static disc framework correspond to each other. 5 carbon/carbon brake pads and 10 carbon/ceramic brake pads are respectively arranged in the two groups of static disc brake pads; the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged in an MNNMNN … manner, and the positions of the carbon/carbon brake pads on the two surfaces of the static disc skeleton 8 correspond to each other, and the positions of the carbon/ceramic brake pads on the two surfaces of the static disc skeleton correspond to each other.

As shown in fig. 11, the rotor assembly 3 includes 1 rotor frame 9 and 30 rotor blades 10. The movable plate framework is disc-shaped, the outer diameter is 448mm, the inner diameter is 282mm, and the thickness is 4.5 mm. 9 keyways are uniformly distributed on the outer circumferential surface of the movable disc framework 9, the width of each keyway is 20mm, and the depth of each keyway is 12 mm. 15 through holes for fixing each brake pad are uniformly distributed on a graduated circle with the disc surface diameter of 382mm and the diameter of 310mm, and the diameter of each through hole is 6 mm. The radius of the excircle surface of each movable disc brake pad is a cambered surface of 200mm, and the included angle between two side edges is 24 degrees; the inner surface of each brake pad of the movable disc is a plane, and the distance between the plane and the vertex of the cambered surface of the outer circumference is 65 mm. The thickness of each brake disc is 7 mm.

Among the 30 dynamic disc brake pads 10, 20 brake pads are carbon/carbon brake pads, and 10 brake pads are carbon/ceramic brake pads. During assembly, the 30 movable disc brake pads are divided into two groups and are respectively arranged on two surfaces of the movable disc framework 9, and the positions of the movable disc brake pads respectively positioned on different surfaces of the movable disc framework correspond to each other. 10 carbon/carbon brake pads and 5 carbon/ceramic brake pads are respectively arranged in the two groups of movable disc brake pads; the carbon/carbon brake pads and the carbon/ceramic brake pads are arranged in a manner of MMNMMN …. The positions of the carbon/carbon vehicle plates on the two surfaces of the movable disc framework 9 correspond to each other, and the positions of the carbon/ceramic vehicle plates on the two surfaces of the movable disc framework correspond to each other.