CN218118406U

CN218118406U - Quick-change lightweight wedge brake

Info

Publication number: CN218118406U
Application number: CN202222507152.3U
Authority: CN
Inventors: 瞿义清; 程正; 江洋; 全康; 贾德望; 王万清
Original assignee: Shiyan Baolun Auto Parts Co ltd
Current assignee: Shiyan Baolun Auto Parts Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-23
Anticipated expiration: 2032-09-21

Abstract

The utility model provides a quick change formula lightweight wedge brake relates to stopper technical field, include: a brake drum; the brake drum is sleeved outside the bottom plate, and the bottom plate is fixedly connected with the upper dust cover and the lower dust cover respectively; a driving assembly is arranged on one side of the bottom plate and is positioned on the outer sides of the upper dust cover and the lower dust cover; the other side of the bottom plate is provided with a wedge block assembly, and the driving assembly is connected with the wedge block assembly; the brake shoe assemblies are connected with the bottom plate and positioned in the brake drum, the wedge block assemblies are connected with the two brake shoe assemblies, and tension spring pins are arranged in the brake shoe assemblies; the brake shoe assembly comprises two retaining springs, a brake shoe assembly and a brake assembly, wherein the two retaining springs are connected with the brake shoe assembly; the utility model discloses utilize wedge type opening mechanism, reduced the fault rate, made things convenient for the maintenance to use, reduced the maintenance cost.

Description

Quick-change lightweight wedge brake

Technical Field

The utility model belongs to the technical field of the stopper, more specifically say, in particular to quick change formula lightweight wedge brake.

Background

Wheel end brakes adopted by the conventional commercial vehicle braking system mainly comprise drum brakes and disc brakes, wherein the drum brakes occupy the market leading position; the drum brake basically adopts a cam type opening mechanism, the working principle is that a brake air chamber provides braking force, an air chamber push rod is pushed to enable an adjusting arm to drive a cam shaft to rotate, a brake shoe assembly is opened to be in contact with a brake drum, the vehicle speed is reduced under the action of friction force to stop the vehicle from running, when the braking force is relieved, the cam shaft returns, and the brake shoe assembly is separated from the brake drum under the action of a return spring to relieve the brake.

Traditional drum brake is because of bulky, and the leakproofness is not good, and inside receives the erosion of silt easily, and the fault rate is high at ordinary times to cam-type opening mechanism weight is heavy, and it is comparatively inconvenient to dismantle the maintenance, and later maintenance expense is high, is difficult to satisfy the in-service use demand.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a quick change formula lightweight wedge brake to solve traditional drum brake because of bulky, the leakproofness is not good, and inside receives the erosion of silt easily, and the fault rate is higher, and cam-type opening mechanism weight is heavy moreover, dismantles the problem that the maintenance is inconvenient, later stage maintenance cost is high.

The utility model relates to a purpose and efficiency of quick change formula lightweight wedge brake are reached by following specific technological means:

a quick-change, lightweight wedge brake, comprising: a brake drum; the brake drum is sleeved outside the bottom plate, and the bottom plate is fixedly connected with the upper dust cover and the lower dust cover respectively; a driving assembly is arranged on one side of the bottom plate and is positioned on the outer sides of the upper dust cover and the lower dust cover; a wedge block assembly is arranged on the other side of the bottom plate, and a driving assembly is connected with the wedge block assembly; the brake shoe assemblies are connected with the bottom plate and positioned in the brake drum, the wedge block assemblies are connected with the two brake shoe assemblies, and tension spring pins are arranged in the brake shoe assemblies; the brake shoe assembly comprises two retaining springs, a brake shoe assembly and a brake shoe, wherein the two retaining springs are connected with the brake shoe assembly; the number of the return springs is two, and the return springs are connected with the tension spring pins.

Furthermore, the upper dust cover is in contact with the lower dust cover, the upper dust cover and the lower dust cover are internally provided with three dust covers to block, and the upper dust cover and the lower dust cover are positioned at the opening of the brake drum.

Furthermore, two shoe shafts are symmetrically arranged in one end of the bottom plate, one end of the brake shoe assembly is rotatably connected with the shoe shafts, one end of the brake shoe assembly is in a semi-annular structure, and the semi-annular structure of the brake shoe assembly is in rotating contact with the shoe shafts.

Furthermore, two ends of the retaining spring are respectively connected with the two brake shoe assemblies, and the retaining spring is located at the semi-annular structure position of the brake shoe assemblies.

Furthermore, two ends of the wedge block assembly are respectively contacted with the inner sides of the two brake shoe assemblies.

Furthermore, two ends of the return spring are respectively connected with the two tension spring pins, and the return spring is located at the position of the wedge block assembly.

Has the beneficial effects that:

1. the utility model seals the opening of the brake drum through the blockage of the upper dust cover, the lower dust cover and the dust cover, thereby ensuring the cleanness inside the brake drum and preventing external silt from eroding the inside of the brake drum, which leads to the increase of failure rate; and the spring is kept to apply inward tension to the two brake shoe assemblies, so that the semi-annular structures of the two brake shoe assemblies are in close contact with the two shoe shafts, the stability of the rotary connection of the brake shoe assemblies and the shoe shafts is ensured, and the later brake shoe assemblies are more convenient to disassemble, assemble and maintain.

2. The utility model applies outward thrust to the two brake shoe assemblies through the wedge block assembly, so that the two brake shoe assemblies are contacted with the inner wall of the brake drum, thereby realizing the braking and decelerating effect, reducing the failure rate by utilizing the wedge type opening mechanism, facilitating the maintenance and the use and reducing the maintenance cost; when the wedge block assemblies stop applying pushing force outwards, the two brake shoe assemblies rotate inwards under the influence of the pulling force of the return springs, so that the brake shoe assemblies are separated from the brake drum, and the smoothness of rotation of the brake drum is guaranteed.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic view of the overall axial structure of the present invention;

FIG. 2 is a schematic view of the connection structure of the bottom plate and the brake shoe assembly of the present invention;

FIG. 3 is a schematic view of the connecting structure of the bottom plate, the driving assembly and the wedge block assembly of the present invention;

fig. 4 is a schematic side structure diagram of the brake shoe assembly of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a brake drum; 2. an upper dust cover; 3. a lower dust cover; 4. blocking the dust cover; 5. a base plate; 6. a drive assembly; 7. a wedge assembly; 8. a brake shoe assembly; 9. a hoof sheet axis; 10. a retention spring; 11. a tension spring pin; 12. and a return spring.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1 to 4:

the utility model provides a quick change formula lightweight wedge brake, include: a brake drum 1; the brake drum 1 is sleeved outside the bottom plate 5, and the bottom plate 5 is fixedly connected with the upper dust cover 2 and the lower dust cover 3 respectively; a driving assembly 6 is arranged on one side of the bottom plate 5, and the driving assembly 6 is positioned on the outer sides of the upper dust cover 2 and the lower dust cover 3; the upper dust cover 2 is in contact with the lower dust cover 3, three dust cover plugs 4 are respectively arranged in the upper dust cover 2 and the lower dust cover 3, the upper dust cover 2 and the lower dust cover 3 are positioned at the opening of the brake drum 1, and the opening of the brake drum 1 is sealed through the upper dust cover 2, the lower dust cover 3 and the dust cover plugs 4, so that the cleanness of the interior of the brake drum 1 is ensured, and the phenomenon that the exterior silt erodes the interior of the brake drum 1 to increase the failure rate is prevented; the other side of the bottom plate 5 is provided with a wedge block assembly 7, and the driving assembly 6 is connected with the wedge block assembly 7; the brake drum comprises two brake shoe assemblies 8, wherein the two brake shoe assemblies 8 are arranged, the brake shoe assemblies 8 are connected with a bottom plate 5, the brake shoe assemblies 8 are positioned in the brake drum 1, a wedge block assembly 7 is connected with the two brake shoe assemblies 8, and a tension spring pin 11 is arranged in each brake shoe assembly 8; two retaining springs 10 are arranged, and the retaining springs 10 are connected with the brake shoe assembly 8; two shoe shafts 9 are symmetrically arranged in one end of the bottom plate 5, one end of a brake shoe assembly 8 is rotatably connected with the shoe shafts 9, one end of the brake shoe assembly 8 is of a semi-annular structure, the semi-annular structure of the brake shoe assembly 8 is rotatably contacted with the shoe shafts 9, two ends of a retaining spring 10 are respectively connected with the two brake shoe assemblies 8, the retaining spring 10 is positioned at the semi-annular structure position of the brake shoe assembly 8, the retaining spring 10 applies inward tension to the two brake shoe assemblies 8, so that the semi-annular structures of the two brake shoe assemblies 8 are tightly contacted with the two shoe shafts 9, the stability of the rotary connection of the brake shoe assembly 8 and the shoe shafts 9 is ensured, and the later brake shoe assembly 8 is more convenient to disassemble and maintain; the number of the return springs 12 is two, and the return springs 12 are connected with the tension spring pin 11.

Wherein, two ends of the wedge block assembly 7 are respectively contacted with the inner sides of the two brake shoe assemblies 8;

by adopting the technical scheme, the wedge block assembly 7 applies outward thrust to the two brake shoe assemblies 8, so that the two brake shoe assemblies 8 are in contact with the inner wall of the brake drum 1, the braking and speed reducing effects are realized, the wedge type opening mechanism is utilized, the failure rate is reduced, the maintenance and the use are facilitated, and the maintenance cost is reduced.

Wherein, two ends of a return spring 12 are respectively connected with two tension spring pins 11, and the return spring 12 is positioned at the position of the wedge block assembly 7;

by adopting the technical scheme, when the wedge block assembly 7 stops applying the thrust outwards, the two brake shoe assemblies 8 rotate inwards under the influence of the tension of the return spring 12, so that the brake shoe assemblies 8 are separated from the brake drum 1, and the smoothness of the rotation of the brake drum 1 is ensured.

The specific use mode and function of the embodiment are as follows:

when the utility model is used, the opening of the brake drum 1 is sealed through the upper dust cover 2, the lower dust cover 3 and the dust cover plug 4, so as to ensure the cleanness inside the brake drum 1 and prevent external silt from eroding the inside of the brake drum 1, thereby increasing the failure rate; the spring 10 is kept to apply inward tension to the two brake shoe assemblies 8, so that the semi-annular structures of the two brake shoe assemblies 8 are in close contact with the two shoe shafts 9, the stability of the rotary connection between the brake shoe assemblies 8 and the shoe shafts 9 is ensured, and the later brake shoe assemblies 8 are more convenient to disassemble, assemble and maintain; the driving assembly 6 drives the brake shoe assemblies 8, the wedge block assembly 7 applies outward thrust to the two brake shoe assemblies 8, the two brake shoe assemblies 8 are in contact with the inner wall of the brake drum 1, the braking and speed reducing effects are achieved, the wedge type opening mechanism is utilized, the failure rate is reduced, the maintenance and the use are facilitated, and the maintenance cost is reduced; when the wedge block assemblies 7 stop applying pushing force outwards, the two brake shoe assemblies 8 rotate inwards under the influence of the pulling force of the return springs 12, so that the brake shoe assemblies 8 are separated from the brake drum 1, and the smoothness of rotation of the brake drum 1 is guaranteed.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A quick-change lightweight wedge brake, comprising: a brake drum (1); the brake drum (1) is sleeved outside the bottom plate (5), and the bottom plate (5) is fixedly connected with the upper dust cover (2) and the lower dust cover (3) respectively; a driving assembly (6) is installed on one side of the bottom plate (5), and the driving assembly (6) is located on the outer sides of the upper dust cover (2) and the lower dust cover (3); a wedge block assembly (7) is installed on the other side of the bottom plate (5), and a driving assembly (6) is connected with the wedge block assembly (7); the brake shoe assembly (8) is provided with two brake shoe assemblies (8), the brake shoe assemblies (8) are connected with the bottom plate (5), the brake shoe assemblies (8) are positioned in the brake drum (1), the wedge block assemblies (7) are connected with the two brake shoe assemblies (8), and tension spring pins (11) are arranged in the brake shoe assemblies (8); the brake shoe assembly comprises two retaining springs (10), wherein the two retaining springs (10) are arranged, and the retaining springs (10) are connected with the brake shoe assembly (8); the spring fixing device comprises two return springs (12), wherein the two return springs (12) are arranged, and the return springs (12) are connected with a tension spring pin (11).

2. The quick-change lightweight wedge brake of claim 1, wherein: go up dust cover (2) and contact with lower dust cover (3), go up all to install three dust cover jam (4) in dust cover (2) and lower dust cover (3), go up dust cover (2) and be located brake drum (1) opening part with lower dust cover (3).

3. The quick-change lightweight wedge brake of claim 1, wherein: two shoe shafts (9) are symmetrically installed in one end of the bottom plate (5), one end of the brake shoe assembly (8) is rotatably connected with the shoe shafts (9), one end of the brake shoe assembly (8) is of a semi-annular structure, and the semi-annular structure of the brake shoe assembly (8) is in rotating contact with the shoe shafts (9).

4. The quick-change lightweight wedge brake of claim 1, wherein: two ends of the holding spring (10) are respectively connected with the two brake shoe assemblies (8), and the holding spring (10) is located at the semi-annular structure position of the brake shoe assemblies (8).

5. The quick-change lightweight wedge brake of claim 1, wherein: and two ends of the wedge block assembly (7) are respectively contacted with the inner sides of the two brake shoe assemblies (8).

6. The quick-change lightweight wedge brake of claim 1, wherein: two ends of the return spring (12) are respectively connected with the two tension spring pins (11), and the return spring (12) is positioned at the wedge block assembly (7).