CN215634569U

CN215634569U - Eccentric shoe shaft of drum brake

Info

Publication number: CN215634569U
Application number: CN202122246173.XU
Authority: CN
Inventors: 叶江; 李亮
Original assignee: Jingjiang Yongheng Automobile Technology Co ltd
Current assignee: Jingjiang Yongheng Automobile Technology Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-25
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses an eccentric shoe shaft of a drum brake, which comprises a shoe shaft body, wherein the right end of the shoe shaft body is integrally connected with a connecting end, the longitudinal sections of the shoe shaft body and the connecting end form a T-shaped structure, and the left end of the shoe shaft body is integrally connected with a mounting shaft; the limiting mechanism is arranged inside the mounting shaft and comprises a mounting groove, a mounting plate, a spring, a limiting block and a limiting groove; the connecting shaft is fixedly connected to the left end of the mounting shaft, the outer surface of the left end of the connecting shaft is in threaded connection with a locking nut, the locking nut is connected with the protection pieces in an embedded mode, and the front end of the front protection piece and the front protection piece are connected in a rotating mode. This drum brake's eccentric hoof piece axle prevents that the department of meeting of lock nut and connecting axle from rustting, conveniently carries on spacingly to the protective sheath moreover for the protective sheath is difficult to drop from the hoof piece is epaxial, prevents simultaneously that the hoof piece axle from being worn and torn.

Description

Eccentric shoe shaft of drum brake

Technical Field

The utility model relates to the related technical field of drum brake brakes, in particular to an eccentric shoe shaft of a drum brake.

Background

The brake is an indispensable part in heavy truck braking, the brake has various styles, one of the brake is a drum brake, and the eccentric shoe shaft is an important component in the drum brake.

However, in the eccentric shoe shaft of the general drum brake, the joint of the lock nut and the connecting shaft is easily rusted, which causes inconvenience in mounting the shoe shaft, and inconvenience in limiting the protective sleeve, which causes the protective sleeve to easily fall off from the shoe shaft, and the shoe shaft is easily worn, so that an eccentric shoe shaft of the drum brake is proposed to solve the problems mentioned above.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an eccentric shoe shaft of a drum brake, which aims to solve the problems that the joint of a locking nut and a connecting shaft of the eccentric shoe shaft of a general drum brake in the background art is easy to rust, so that the shoe shaft is inconvenient to mount, a protective sleeve is inconvenient to limit, the protective sleeve is easy to fall off from the shoe shaft, and the shoe shaft is easy to wear.

In order to achieve the purpose, the utility model provides the following technical scheme: an eccentric shoe shaft of a drum brake comprises a shoe shaft body, wherein the right end of the shoe shaft body is integrally connected with a connecting end, the longitudinal sections of the shoe shaft body and the connecting end form a T-shaped structure, the left end of the shoe shaft body is integrally connected with an installation shaft, and the shoe shaft body is arranged in a protection sleeve;

the limiting mechanism is arranged inside the mounting shaft and comprises a mounting groove, a mounting plate, a spring, a limiting block and a limiting groove, wherein the mounting groove is formed in the right end of the mounting shaft;

the connecting shaft is fixedly connected to the left end of the mounting shaft, the outer surface of the left end of the connecting shaft is in threaded connection with a locking nut, the locking nut is connected with the protection pieces in an embedded mode, and the front end of the front protection piece and the front protection piece are connected in a rotating mode.

Through adopting above-mentioned technical scheme, prevent that the department of meeting of lock nut and connecting axle from rustting, conveniently carry on spacingly to the protective sheath moreover for the protective sheath is difficult to drop from the hoof axle, prevents simultaneously that the hoof axle from being worn and torn.

As a preferred technical solution of the present invention, the shoe shaft body includes a shoe shaft main body and a protective layer, the protective layer is mounted on an outer surface of the shoe shaft main body, and a length of the shoe shaft main body is equal to a length of the protective layer.

By adopting the technical scheme, the shoe shaft is prevented from being worn because the length of the shoe shaft main body is equal to that of the protective layer.

As a preferred technical scheme of the utility model, the diameter of the shoe shaft body is equal to the inner diameter of the protective sleeve, the left side of the protective sleeve is in a circular ring shape in a longitudinal section, and the inner end of the protective sleeve is in a concave-convex structure;

the mounting groove is formed in the right side of the shoe shaft body, the mounting plate is fixedly connected to the middle end of the inside of the mounting groove, and springs which have elastic reset effects are connected to the upper end and the lower end of the mounting plate in an integrated mode.

Through adopting above-mentioned technical scheme, because the diameter of shoe axle body equals with the internal diameter of protective sheath, the inner of protective sheath is concavo-convex structure, consequently prevents that the shoe axle from being worn and torn, because the inside middle-end fixedly connected with mounting panel of the mounting groove that shoe axle body right side set up, consequently conveniently carries on spacingly to the protective sheath.

As a preferred technical scheme, the outer end of the spring is integrally connected with a limiting block, the outer end of the limiting block is connected to the inside of a limiting groove in a clamping mode, the limiting groove is formed in the upper side wall and the lower side wall of the mounting groove respectively, and the extending length of the limiting block is higher than the connecting position of the shoe shaft body and the protective sleeve.

Through adopting above-mentioned technical scheme, because the outer end block of stopper is connected in the inside of spacing groove, the extension length of stopper is higher than the junction of shoe axle body and protective sheath, consequently conveniently carries on spacingly to the protective sheath.

In a preferred embodiment of the present invention, the outer surface of the locking nut is integrally connected to a connecting block at an equal angle, the connecting block is nested in a connecting groove, the connecting groove is formed in a side wall of the protection member, and the protection member and the locking nut are in an inverted structure.

By adopting the technical scheme, the outer surface of the locking nut is integrally connected with the connecting block at equal angles, and the connecting block is connected in the connecting groove in a nested manner, so that the connecting part of the locking nut and the connecting shaft is prevented from rusting.

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

1. according to the utility model, the protection piece and the locking nut are arranged, and the protection piece and the locking nut are structurally designed, so that the protection piece is overturned and nested at the joint of the connecting shaft and the locking nut, and the positions of the upper protection piece and the lower protection piece are limited through the bolts, thereby preventing the joint of the locking nut and the connecting shaft from rusting;

2. according to the utility model, the limiting mechanism is arranged, and the outer ends of the limiting blocks are connected to the inner part of the limiting groove in a clamping manner, so that the limiting blocks which are symmetrical up and down extend out of the inner part of the mounting groove through the springs, and the limiting blocks block the left end of the protective sleeve, thereby conveniently limiting the protective sleeve;

3. according to the utility model, the shoe shaft body and the protective sleeve are arranged, the diameter of the shoe shaft body is equal to the inner diameter of the protective sleeve, so that the protective sleeve protects the shoe shaft body, the length of the shoe shaft main body is equal to that of the protective layer, and the protective layer protects the shoe shaft main body, thereby preventing the shoe shaft from being worn.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic diagram of a left side view cross-sectional structure of the shoe shaft body and the protective layer according to the present invention;

FIG. 3 is a schematic view of a left side view section structure of the connection between the limiting block and the limiting groove;

FIG. 4 is a schematic diagram of the right side view of the cross section of the locking nut and the connecting block of the present invention.

In the figure: 1. a shoe shaft body; 101. a shoe shaft body; 102. a protective layer; 2. a connecting end; 3. a protective sleeve; 4. installing a shaft; 5. a limiting mechanism; 501. mounting grooves; 502. mounting a plate; 503. a spring; 504. a limiting block; 505. a limiting groove; 6. a connecting shaft; 7. a lock nut; 8. connecting blocks; 9. connecting grooves; 10. a guard.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: an eccentric hoof shaft of a drum brake, including a hoof shaft body 1, a connection end 2, a protection sleeve 3, an installation shaft 4, a limiting mechanism 5, a connection shaft 6, a lock nut 7, a connection block 8, a connection groove 9 and a protection member 10, by adopting the above technical scheme and combining with figures 1 and 2, since the diameter of the hoof shaft body 1 is equal to the inner diameter of the protection sleeve 3, the hoof shaft body 1 can be tightly sleeved inside the protection sleeve 3 until the right end of the protection sleeve 3 abuts against the left end of the connection end 2, the connection end 2 is arranged to prevent the protection sleeve 3 from being separated from the left end of the hoof shaft body 1, and the inner end of the protection sleeve 3 is in a concave-convex structure, so that the hoof shaft body 1 cannot rotate inside the protection sleeve 3, the hoof shaft body 1 is composed of a hoof shaft body 101 and a protection layer 102, since the length of the hoof shaft body 101 is equal to the length of the protection layer 102, therefore, the protective layer 102 fully wraps the shoe axle main body 101, the protective layer 102 is silicon trioxide, and the wear resistance of the shoe axle main body 101 can be improved through the protective layer 102, so that the shoe axle main body 1 is prevented from being worn;

with reference to fig. 1 and 3, the position of the protective sleeve 3 on the shoe axle body 1 is limited by the structure consisting of the mounting groove 501, the mounting plate 502, the spring 503, the limiting block 504 and the limiting groove 505, after the protective sleeve 3 is sleeved on the shoe axle body 1, the hand pressing on the limiting block 504 is released, since the upper and lower ends of the mounting plate 502 are integrally connected with the spring 503 for elastic return, so that the upper and lower sets of springs 503 bring the stopper 504 to slide toward the outer end inside the mounting groove 501, so that the limiting block 504 is clamped and connected in the limiting groove 505 at the corresponding position until the outermost end of the limiting block 504 exceeds the joint of the protective sleeve 3 and the shoe shaft body 1, so that the right end of the limiting block 504 is abutted against the left end of the protective sleeve 3 to prevent the protective sleeve 3 from being separated from the left end of the shoe axle body 1, therefore, the protective sleeve 3 is convenient to limit, and the protective sleeve 3 is not easy to fall off from the hoof sheet shaft;

referring to fig. 1 and 4, after the shoe shaft body 1 is assembled, the front ends of the front and rear guards 10 are rotatably connected, so that the lock nut 7 is rotated to be screwed on the connecting shaft 6, the position of the shoe shaft body 1 is limited, the guards 10 are placed on the connecting shaft 6 and the lock nut 7 until the inner wall of the left end of the guard 10 contacts with the left end of the connecting shaft 6, the upper and lower guards 10 are turned over, so that the upper and lower guards 10 are sleeved on the connecting shaft 6 and the lock nut 7, the connecting grooves 9 disposed at equal angles are nested on the connecting blocks 8 at corresponding positions, the bolts are installed at the rear ends of the upper and lower guards 10 to prevent the upper and lower guards 10 from further rotating, the upper and lower guards 10 are tightly installed at the connecting position of the connecting shaft 6 and the lock nut 7 through the connecting blocks 8 and the connecting grooves 9, and the upper and lower guards 10 are surrounded on the connecting shaft 6 and the lock nut 7, thereby preventing rusting at the joint of the lock nut 7 and the connecting shaft 6.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An eccentric shoe shaft for a drum brake, comprising:

the shoe shaft comprises a shoe shaft body (1), wherein a connecting end (2) is integrally connected to the right end of the shoe shaft body (1), the longitudinal sections of the shoe shaft body (1) and the connecting end (2) form a T-shaped structure, an installation shaft (4) is integrally connected to the left end of the shoe shaft body (1), and the shoe shaft body (1) is arranged inside a protection sleeve (3);

the limiting mechanism (5) is installed inside the installation shaft (4), the limiting mechanism (5) comprises an installation groove (501), an installation plate (502), a spring (503), a limiting block (504) and a limiting groove (505), and the installation groove (501) is formed inside the right end of the installation shaft (4);

the connecting shaft (6), connecting shaft (6) fixed connection is in the left end of installation axle (4), and the left end surface threaded connection of connecting shaft (6) has locking nut (7), nested connection has protection piece (10) on locking nut (7), and the front end of two sets of protection pieces (10) is connected with each other in a rotating manner around and.

2. The eccentric shoe shaft of a drum brake according to claim 1, wherein: the shoe shaft body (1) comprises a shoe shaft main body (101) and a protective layer (102), the protective layer (102) is installed on the outer surface of the shoe shaft main body (101), and the length of the shoe shaft main body (101) is equal to that of the protective layer (102).

3. The eccentric shoe shaft of a drum brake according to claim 1, wherein: the diameter of the shoe shaft body (1) is equal to the inner diameter of the protective sleeve (3), the left side of the protective sleeve (3) is in a circular ring shape in longitudinal section, and the inner end of the protective sleeve (3) is in a concave-convex structure;

the shoe plate shaft is characterized in that a mounting plate (502) is fixedly connected to the middle end of the inside of a mounting groove (501) formed in the right side of the shoe plate shaft body (1), and springs (503) with elastic reset effects are connected to the upper end and the lower end of the mounting plate (502) in an integrated mode.

4. The eccentric shoe shaft of a drum brake according to claim 3, wherein: the outer end integration of spring (503) is connected with stopper (504), and the outer end block of stopper (504) is connected in the inside of spacing groove (505), and spacing groove (505) are seted up respectively on the upper and lower lateral wall of mounting groove (501), and wherein the extension length of stopper (504) is higher than the junction of hoof piece axle body (1) and protective sheath (3).

5. The eccentric shoe shaft of a drum brake according to claim 1, wherein: the outer surface of the locking nut (7) is in integral connection with a connecting block (8) at equal angles, the connecting block (8) is connected into a connecting groove (9) in a nested mode, the connecting groove (9) is formed in the side wall of the protection piece (10), and meanwhile the protection piece (10) and the locking nut (7) are of an overturning structure.