CN209925470U - A split brake disc structure - Google Patents

Abstract

The utility model provides a split-type brake disc structure, which divides the existing integrated structure brake disc into two parts: a connection structure connected with the hub and a friction structure with friction with the brake components. The connection structure is a brake disc. Disc body, the friction structure is two friction plates connected with the brake disc body. The two friction plates clamp the annular disc in the brake disc body through two snap rings. The brake disc body is made of ductile iron material to improve the connection strength , reduce the weight of the material; the friction plate is made of gray iron to improve the braking friction performance. When the friction performance of the brake disc decreases and needs to be replaced, only the friction plate needs to be replaced, and the brake disc body does not need to be replaced, thereby reducing the maintenance cost.

Description

A split brake disc structure

technical field

The utility model belongs to the field of automobile axle assemblies, in particular to a split brake disc structure of composite materials.

Background technique

At present, in the domestic automobile axle, the brake disc of the disc brake is mostly an integrated structure, which is made of a single metal material. With this structural feature, after the brake disc is worn, it is necessary to replace the brake disc as a whole, which increases the maintenance cost; the connection and fixing structure of the brake disc and the friction braking structure adopt the same structure, which increases the weight of the connection and fixing structure.

SUMMARY OF THE INVENTION

The utility model solves the problems of increased replacement and maintenance cost of the brake disk, increased material weight of the brake disk, etc. due to the fact that the brake disk is an integrated structure and is made of a single metal material in the existing vehicle axle, and provides a A composite split brake disc structure reduces cost and weight.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to realize:

Compared with the prior art, the beneficial effects of the present invention are:

A split brake disc structure is characterized in that it comprises a brake disc assembly connected with a wheel hub, and the brake disc assembly comprises a brake disc body and two friction plates;

The brake disc body includes an annular disc, the upper part of the annular disc is an upper friction plate positioning ring of an annular cylindrical structure, the lower part of the annular disc is a lower friction plate positioning ring of an annular cylindrical structure, and the upper part of the upper friction plate positioning ring is a In the connecting flange of the rotary body structure connected by the hub, the outer cylindrical surface of the annular disc is evenly spaced with a plurality of arc-shaped grooves recessed inward along the radial direction of the annular disc;

The friction plate is a disc structure with a central through hole. The outer edge of the upper surface of the friction plate is evenly spaced with upwardly convex arc-shaped bosses that cooperate with the arc-shaped grooves. The outer cylindrical surface of the upper friction plate positioning ring There is an annular groove on the upper part, and an annular groove on the outer cylindrical surface of the lower friction plate positioning ring;

One friction plate is sleeved on the outer cylindrical surface of the upper friction plate positioning ring from top to bottom, and the other friction plate is sleeved on the outer cylindrical surface of the lower friction plate positioning ring from bottom to top. The table is inserted into the corresponding arc-shaped groove on the annular disk, and the two snap rings are respectively embedded in the corresponding annular groove to press the two friction plates toward the annular disk;

The upper end face of the connecting flange is evenly spaced with connecting holes with internal threads, the brake disc assembly is sleeved on the journal of the wheel hub, and the connection part between the wheel hub and the brake disc assembly is provided with a connection with the connecting flange The holes correspond to the through holes one by one, and the bolts pass through the through holes of the wheel hub and then are threadedly connected with the connection holes corresponding to the connection flanges, so as to fix the brake disc assembly and the wheel hub together.

Further technical solutions include:

The outer cylindrical surface of the transition portion between the connecting flange and the upper friction plate positioning ring is recessed inward.

The brake disc body is made of ductile iron material, and the friction plate is made of gray iron material.

The utility model provides a split brake disc structure. The brake disc is decomposed into two parts: the connection structure and the friction structure. The connection structure is made of ductile iron material, which improves the connection strength and reduces the weight of the material; the friction structure is made of gray iron material to improve the braking friction performance. With this structure, when the friction of the brake disc is replaced, only the friction structure part needs to be replaced, and the connection structure does not need to be replaced, thereby reducing the maintenance cost.

Description of drawings

Below in conjunction with accompanying drawing, the present invention is further described:

1 is a schematic structural diagram of a split brake disc structure of the utility model applied to a vehicle front axle assembly;

FIG. 2 is a longitudinal cross-sectional view of a brake disc assembly of a split type brake disc structure according to the utility model;

3 is a front view of a brake disc body of a split type brake disc structure according to the utility model;

Fig. 4 is A-A sectional view of Fig. 3;

5 is a front view of a friction plate of a split brake disc structure according to the utility model;

Fig. 6 is the radial sectional view of Fig. 5;

In the figure: 1. Brake disc assembly, 2. Bolt, 3. Wheel hub, 4. Brake disc body, 5. Friction plate, 6. Snap ring, 7. Ring disc, 8. Upper friction plate positioning ring, 9 . Lower friction plate positioning ring, 10. Annular groove, 11. Connecting flange, 12. Connecting hole, 13. Arc-shaped groove, 14. Arc-shaped boss.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in detail:

As shown in FIG. 1 , a split brake disc structure disclosed in the present invention includes a brake disc assembly 1 connected with a wheel hub 3 .

As shown in FIG. 2 , the brake disc assembly 1 includes a brake disc body 4 and two friction plates 5 .

As shown in FIGS. 3 and 4 , the brake disc body 4 includes an annular disc 7 . Above the annular disc 7 is an upper friction plate positioning ring 8 of an annular cylindrical structure integrated with the annular disc 7 . A lower friction plate positioning ring 9 of an annular cylindrical structure integrated with the annular disk 7, the upper friction plate positioning ring 8 is a connecting flange 11 of a rotary structure connected with the hub 3, the connecting flange 11, the upper friction plate positioning The ring 8, the annular disc 7 and the lower friction plate positioning ring 9 are coaxially arranged, the central through hole of the connecting flange 11, the central through hole of the upper friction plate positioning ring 8, the central through hole of the annular disc 7 and the lower friction plate positioning ring The central through hole of 9 forms the central through hole of the brake disc body 4 , and a plurality of arc-shaped grooves 13 recessed radially inwardly of the annular disc 7 are evenly distributed on the outer cylindrical surface of the annular disc 7 along the circumferential direction.

The friction plate 5 is a disc structure with a central through hole. The outer edge of the upper surface of the friction plate 5 is evenly distributed with upwardly protruding arc-shaped bosses 14 that match the arc-shaped grooves. The arc surface is an arc surface that is curved from the outside to the inside along the radial direction of the friction plate 5. The outer cylindrical surface of the upper friction plate positioning ring 8 has an annular groove 10, and the outer cylindrical surface of the lower friction plate positioning ring 9 has an annular groove 10. , one friction plate 5 is sleeved on the outer cylindrical surface of the upper friction plate positioning ring 8 from top to bottom, the other friction plate 5 is sleeved on the outer cylindrical surface of the lower friction plate positioning ring 9 from bottom to top, and the two friction plates 5 The corresponding arc-shaped bosses 14 are inserted into the corresponding arc-shaped grooves 13 on the annular disk 7, and the two snap rings 6 are respectively embedded in the corresponding annular grooves 10, and the two friction plates 5 are pressed in the direction of the annular disk 7. , the upper end face of the connecting flange 11 is evenly spaced with connecting holes 12 with internal threads, the brake disc assembly 1 is sleeved on the journal of the wheel hub 3 through the central through hole of the brake disc body 4, and the wheel hub 3 and the The connecting portion of the brake disc assembly 1 is provided with through holes corresponding to the connecting holes 12 of the connecting flange 11 one-to-one. Fix the brake disc assembly 1 and the wheel hub 3 together.

In order to reduce the weight of the connecting flange 11 and the brake disc body 4 , the outer cylindrical surface of the transition portion between the connecting flange 11 and the upper friction plate positioning ring 8 is recessed inward.

The utility model provides a split-type brake disc structure, which decomposes the brake disc into two parts: a connection structure (brake disc body) connected with the wheel hub and a friction structure (friction plate) rubbed with the brake components. The connection structure (brake disc body) adopts ductile iron material to improve connection strength and reduce material weight; friction structure (friction plate) adopts gray iron material to improve braking friction performance. When the friction performance of the brake disc decreases and needs to be replaced, only the friction structure (friction plate) needs to be replaced, and the connection structure (brake disc body) does not need to be replaced, thereby reducing the maintenance cost.

Claims (3)

1. A split brake disc structure, characterized in that it comprises a brake disc assembly (1) connected to a wheel hub (3), the brake disc assembly (1) comprising a brake disc body (4) and two friction plates (5); The brake disc body (4) comprises an annular disc (7), the upper part of the annular disc (7) is an upper friction plate positioning ring (8) of an annular cylindrical structure, and the lower part of the annular disc (7) is an annular cylindrical structure. The lower friction plate positioning ring (9), the upper friction plate positioning ring (8) is the connecting flange (11) of the rotary structure connected with the hub (3), and the outer cylindrical surface of the annular disk (7) is evenly spaced A plurality of arc-shaped grooves (13) recessed radially inward along the annular disc (7) are distributed; The friction plate (5) is a disc structure with a central through hole, and the outer edge of the upper surface of the friction plate (5) is evenly distributed with upwardly convex arc-shaped bosses ( 14), there is an annular groove (10) on the outer cylindrical surface of the upper friction plate positioning ring (8), and an annular groove (10) on the outer cylindrical surface of the lower friction plate positioning ring (9); One friction plate (5) is sheathed on the outer cylindrical surface of the upper friction plate positioning ring (8) from top to bottom, and the other friction plate (5) is sheathed on the outer cylindrical surface of the lower friction plate positioning ring (9) from bottom to top The corresponding arc-shaped bosses (14) on the two friction plates (5) are inserted into the corresponding arc-shaped grooves (13) on the annular disc (7), and the two snap rings (6) are respectively embedded in the corresponding annular grooves. In the groove (10), press the two friction plates (5) in the direction of the annular disc (7); Connecting holes (12) with internal threads are evenly spaced on the upper end face of the connecting flange (11), the brake disc assembly (1) is sleeved on the journal of the hub (3), the hub (3) is connected to the The connecting part of the moving plate assembly (1) is provided with through holes corresponding to the connecting holes (12) of the connecting flange (11) one-to-one, and the bolts (2) pass through the through holes of the hub (3) and connect with the connecting flanges. (11) Corresponding connecting holes (12) are threadedly connected, and the brake disc assembly (1) and the wheel hub (3) are fixedly connected together. 2 . The split brake disc structure according to claim 1 , wherein the outer cylindrical surface of the transition portion between the connecting flange ( 11 ) and the upper friction plate positioning ring ( 8 ) is recessed inward. 3 . 3. A split brake disc structure according to claim 1 or 2, characterized in that the brake disc body (4) is made of ductile iron material, and the friction plate (5) is made of gray iron material.

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