Brake drum for lorry

Abstract

The utility model discloses a brake drum for a lorry, which belongs to the technical field of brake drums and comprises an outer shell, an annular brake part is arranged on the inner side of the outer shell, four rectangular fixing blocks are circumferentially and fixedly connected to the outer side of the annular brake part at equal intervals, and a cylindrical through groove is formed in the front end of each rectangular fixing block; and the limiting mechanism comprises an annular limiting groove formed in the inner wall of the rear side of the outer shell, four rectangular limiting grooves are circumferentially formed in the inner wall of the rear side of the outer shell at equal intervals, and a plurality of bolts are arranged on the rear side of the outer shell. Aiming at the use problem, the equipment is provided with the limiting mechanism, maintenance and replacement of the annular brake part can be conveniently achieved, compared with replacement of the whole brake drum, the maintenance cost is reduced, meanwhile, the multiple cooling fins are further arranged and matched with the multiple ventilation openings, the cooling effect of the annular brake part can be improved, and the service life of the brake drum is prolonged. And the performance of the braking system is prevented from being influenced by over-high heat.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake drum especially relates to a brake drum for heavy duty truck. BACKGROUND

[0002] Brake drum is an important part in the automobile brake system, mainly used for drum brake system, generates brake force through friction with brake shoe, thereby makes the vehicle deceleration or stop, due to its outstanding durability and reliability, brake drum has been widely applied in the field of heavy duty truck etc.

[0003] The existing heavy duty truck brake drum in actual use, every time brake will rub with brake shoe, and easy to appear wear after long-term operation, since brake drum is integrally designed, makes need to maintain and replace periodically as a whole, increase the cost of maintenance, and a large amount of heat is generated in the brake drum during the braking process, if not in time dissipate will affect the performance of brake system, and then reduce the brake effect, therefore in order to solve these problems, design a kind of brake drum for heavy duty truck is the problem that we need to consider. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art, and provides a brake drum for heavy duty truck, which is convenient to maintain and replace the annular brake part, and the maintenance cost is reduced, and the heat dissipation effect of the annular brake part is improved by the multiple heat sinks and the multiple air vents.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A brake drum for heavy duty truck, which comprises an outer shell, an annular brake part is arranged on the inner side of the outer shell, four rectangular fixed blocks are fixedly connected to the outer side of the annular brake part in a circumferential and equidistant manner, a cylindrical through slot is formed in the front end of each rectangular fixed block, a limiting mechanism is arranged on the rear side of the outer shell, the limiting mechanism comprises an annular limiting slot formed on the inner wall of the rear side of the outer shell, four rectangular limiting slots are formed on the inner wall of the rear side of the outer shell in a circumferential and equidistant manner, a plurality of bolts are arranged on the rear side of the outer shell, the screw rod part of each bolt penetrates the rear side of the outer shell and the corresponding cylindrical through slot, and the threaded end of each bolt is threadedly connected with a nut.

[0007] Preferably, the rear end of the annular brake part is slidably connected with the inner wall of the annular limiting slot, and each rectangular fixed block is slidably connected with the inner wall of the corresponding rectangular limiting slot.

[0008] Preferably, the screw rod part of each bolt is in sliding connection with the inner wall of the corresponding cylindrical through slot, and the rear side of each nut is in abutment with the front side of the corresponding rectangular fixing block.

[0009] Preferably, the inner wall of the outer shell body is fixedly connected with a plurality of cooling fins.

[0010] Preferably, one side of each cooling fin near the annular brake member is in abutment with the outer side of the annular brake member.

[0011] Preferably, the outer side of the outer shell body is provided with a plurality of ventilation openings, and the plurality of ventilation openings cooperate with the plurality of cooling fins.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] By setting the annular limiting groove and the four rectangular limiting grooves on the outer shell body, cooperating with the four rectangular fixing blocks, the plurality of bolts and the nuts, the annular brake member for friction braking of the brake shoe can be conveniently and quickly maintained and replaced, compared with replacing the brake drum as a whole, the actual maintenance cost is effectively reduced, and meanwhile, the plurality of cooling fins are arranged, cooperating with the plurality of ventilation openings, so that the heat dissipation effect of the annular brake member is effectively improved, and the braking effect of the braking system is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structural schematic view of the brake drum for a truck is provided in the utility model;

[0015] Figure 2 A front view is provided in the utility model; Figure 1

[0016] A structural schematic view after removing the annular brake member is provided in the utility model; Figure 3 Figure 1 An enlarged view of A is provided in the utility model;

[0017] Figure 4 Figure 3 A structural schematic view of the annular brake member is provided in the utility model.

[0018] Figure 5 A structural schematic view of the annular brake member is provided in the utility model.

[0019] In the drawing: 1 outer shell body, 2 annular brake member, 3 rectangular fixing block, 4 cylindrical through slot, 5 annular limiting groove, 6 rectangular limiting groove, 7 bolt, 8 nut, 9 cooling fin, 10 ventilation opening. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. ​​

[0021] Referring to Figures 1-5 A truck brake drum, comprising an outer shell 1, the inner side of the outer shell 1 is provided with an annular brake 2, the inner side of the annular brake 2 is frictionally braked with the brake shoe, so that only the annular brake 2 needs to be replaced and maintained after a long period of braking operation, the outer side of the annular brake 2 is circumferentially and equidistantly fixedly connected with four rectangular fixed blocks 3, and a cylindrical through slot 4 is formed in the front end of each rectangular fixed block 3.

[0022] The limiting mechanism comprises an annular limiting groove 5 formed on the inner wall of the rear side of the outer shell 1, the rear end of the annular brake 2 is in sliding connection with the inner wall of the annular limiting groove 5, four rectangular limiting grooves 6 are circumferentially and equidistantly formed on the inner wall of the rear side of the outer shell 1, each rectangular fixed block 3 is in sliding connection with the inner wall of the corresponding rectangular limiting groove 6, a plurality of bolts 7 are arranged on the rear side of the outer shell 1, the threaded portion of each bolt 7 penetrates through the rear side of the outer shell 1 and the corresponding cylindrical through slot 4, the threaded portion of each bolt 7 is in sliding connection with the inner wall of the corresponding cylindrical through slot 4, the threaded end of each bolt 7 is threadedly connected with a nut 8, and the rear side of each nut 8 is attached to the front side of the corresponding rectangular fixed block 3.

[0023] The inner wall of the outer shell 1 is fixedly connected with a plurality of heat dissipation fins 9, one side of each heat dissipation fin 9 close to the annular brake 2 is attached to the outer side of the annular brake 2, can absorb the heat on the annular brake 2, so as to ensure the stability of the braking system during operation, a plurality of ventilation openings 10 are formed on the outer side of the outer shell 1, the plurality of ventilation openings 10 cooperate with the plurality of heat dissipation fins 9, and the airflow during automobile driving is conveyed to the plurality of heat dissipation fins 9 through the plurality of ventilation openings 10, so as to reduce the temperature of the heat dissipation fins 9.

[0024] In the utility model, when the braking operation is carried out, the inner side of the annular brake 2 will be rubbed with the brake shoe and make the wheel decelerate or stop rotating, during which the heat generated on the annular brake 2 by friction will be transmitted to the plurality of heat dissipation fins 9, so as to avoid that the heat of the annular brake 2 is too high to affect the performance of the braking system, and the actual braking effect is guaranteed, and the plurality of ventilation openings 10 can promote the airflow during automobile operation to air-cool and dissipate heat for the plurality of heat dissipation fins 9, so as to further improve the heat dissipation effect of the annular brake 2;

[0025] After a long brake operation, the brake drum needs to be maintained and replaced, at this time the maintenance personnel can use tools to separate the plurality of nuts 8 and the corresponding bolts 7 in turn, and then move the annular brake 2 forward to disassemble it, when installing a new annular brake 2, insert the annular brake 2 into the annular limiting groove 5, and ensure that the four rectangular fixed blocks 3 are aligned with the corresponding rectangular limiting grooves 6 to achieve the pre-positioning of the annular brake 2 before installation, then insert the plurality of bolts 7 from the rear side of the outer shell 1 and pass through the corresponding cylindrical through slot 4, and finally fasten the corresponding nut 8 and the bolt 7 to ensure the stable connection between the annular brake 2 and the outer shell 1, so as to realize the replacement of the annular brake 2, the whole replacement and maintenance process is relatively convenient, and since the brake shoe is in friction with the inner side of the annular brake 2, only the annular brake 2 needs to be maintained and replaced, compared with the maintenance and replacement of the whole brake drum, the actual maintenance cost is reduced.

[0026] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A brake drum for a heavy duty vehicle, characterized in that Include: The inner side of the outer shell (1) is provided with an annular brake (2), the outer side of the annular brake (2) is circumferentially fixedly connected with four rectangular fixed blocks (3), the front end of each rectangular fixed block (3) is provided with a cylindrical through slot (4); The limiting mechanism includes an annular limiting groove (5) opened on the inner wall of the rear side of the outer shell (1), the rear side of the outer shell (1) is circumferentially provided with four rectangular limiting grooves (6), the rear side of the outer shell (1) is provided with a plurality of bolts (7), the screw rod portion of each bolt (7) penetrates the rear side of the outer shell (1) and the corresponding cylindrical through slot (4), and the threaded end of each bolt (7) is threadedly connected with a nut (8).

2. A brake drum for a heavy duty vehicle as claimed in claim 1, wherein The rear end of the annular brake (2) is slidably connected with the inner wall of the annular limiting groove (5), and each rectangular fixed block (3) is slidably connected with the inner wall of the corresponding rectangular limiting groove (6).

3. A brake drum for a heavy duty vehicle as claimed in claim 1, wherein The screw rod portion of each bolt (7) is slidably connected with the inner wall of the corresponding cylindrical through slot (4), and the rear side of each nut (8) is in contact with the front side of the corresponding rectangular fixed block (3).

4. A brake drum for a heavy duty vehicle as defined in claim 1, characterized in that The inner wall of the outer shell (1) is fixedly connected with a plurality of cooling fins (9).

5. A brake drum for a heavy duty vehicle as claimed in claim 4 wherein, Each cooling fin (9) is in contact with the outer side of the annular brake (2) on the side close to the annular brake (2).

6. A brake drum for a heavy duty vehicle as defined in claim 4, wherein The outer side of the outer shell (1) is provided with a plurality of ventilation openings (10), and the plurality of ventilation openings (10) are matched with the plurality of cooling fins (9).

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