CN210178801U

CN210178801U - Novel drum brake

Info

Publication number: CN210178801U
Application number: CN201920832796.5U
Authority: CN
Inventors: Xue Li; 李雪; Hongyan Guan; 关红艳; Xuehao Song; 宋雪昊
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-03-24
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses a novel drum brake in the technical field of brake equipment, including brake chassis, brake disc and return spring, the brake disc is installed the preceding lateral wall on brake chassis, the brake disc includes brake block, brake shoe, fixed pivot and braking wheel cylinder, the brake block inlays and is fixed in the lateral wall of brake shoe, the brake block with the inside wall contact on brake chassis, the quantity of brake shoe is four, four the brake shoe presents annular distribution, adjacent two the brake shoe is connected through fixed pivot, the both ends of fixed pivot are inlayed fixedly with the brake shoe respectively, two level correspondences the brake shoe between connect through the braking wheel cylinder; this novel drum brake's setting, the use of mutually supporting of brake shoe and brake cylinder to brake shoe and brake cylinder can dismantle the change, and then make the brake disc have that braking force is big, and braking efficiency is high, and life is high.

Description

Novel drum brake

Technical Field

The utility model relates to a brake equipment technical field specifically is a novel drum brake.

Background

The brakes are generally classified into a shoe brake, a disc brake, and a band brake according to their structures, the shoe brake having a cylinder and a cam, and a loader multi-purpose cylinder shoe brake. The existing brake has the serious problems of large combined impact force of a brake shoe and a brake drum, unstable work, high requirement on lining belt materials and poor braking efficiency, and is sensitive to the friction coefficient of the lining belt.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel drum brake to the stopper that provides in solving above-mentioned background art is big with brake drum combined impact force when using, and work is unstable, and is very sensitive to the coefficient of friction of lining area, requires very high to the lining area material, the problem of the poor shortcoming of braking efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel drum brake, includes brake chassis, brake disc and return spring, the brake disc is installed brake chassis's preceding lateral wall, the brake disc includes brake block, brake shoe, fixed pivot and braking wheel cylinder, the brake block is inlayed and is fixed in brake shoe's lateral wall, the brake block with brake chassis's inside wall contact, brake shoe's quantity is four, four brake shoe presents the annular and distributes, adjacent two brake shoe passes through fixed pivot and connects, fixed pivot's both ends respectively with brake shoe inlays fixedly, and two levels correspond pass through between the brake shoe the braking wheel cylinder is connected, open inside of brake shoe has the mounting hole, two return spring's both ends are pegged graft respectively in two levels inside the brake shoe in the mounting hole.

Preferably, two ends of the return spring respectively extend outwards to form a connector, and the connectors are hook-shaped structures.

Preferably, a connecting buckle is welded and fixed at one end of the brake shoe, a bolt is welded and fixed at the other end of the brake shoe, a concave groove is formed in one side of the fixed fulcrum, a pin hole is formed in the other side of the fixed fulcrum, the connecting buckle is matched with the concave groove, and the bolt is matched with the pin hole.

Preferably, four brake shoes form a pair of leading shoes and a pair of trailing shoes.

Compared with the prior art, the beneficial effects of the utility model are that: this novel drum brake's setting, structural design is reasonable, and the use of mutually supporting of brake shoe and brake wheel cylinder to brake shoe and brake wheel cylinder can dismantle the change, and then make the brake disc have that braking force is big, and braking efficiency is high, and life is high.

Drawings

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

fig. 2 is a schematic view of the brake shoe structure of the present invention.

In the figure: the brake comprises a brake base plate 100, a brake disc 200, a brake pad 210, a brake shoe 220, a connecting buckle 221, a bolt 222, a mounting hole 223, a fixed fulcrum 230, a brake cylinder 240, a return spring 300 and a connecting head 310.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a novel drum brake for make its brake disc have bigger brake force, improve braking efficiency and life, please refer to fig. 1, including braking chassis 100, brake disc 200 and return spring 300.

Referring to fig. 1 again, the brake base plate 100 is a circular structure, a circular hole is formed in the interior of the brake base plate 100, the brake base plate 100 is installed outside the driving shaft through the circular hole, the brake base plate 100 is used for being connected with the wheels into a whole, the speed of the wheels is reduced when the brake base plate 100 is rubbed, and the brake base plate 100 is made of steel.

Referring to fig. 1-2, a brake disc 200 is installed on a front sidewall of a brake base plate 100, the brake disc 200 has brake pads 210, brake shoes 220, fixed pivot points 230 and brake cylinders 240, outer sidewalls of the brake shoes 220 are provided with insertion holes, the brake pads 210 are inserted into the insertion holes of the outer sidewalls of the brake shoes 220, the brake pads 210 contact the inner sidewalls of the brake base plate 100, four brake shoes 220 are annularly distributed, two adjacent brake pads 210 are connected through the fixed pivot points 230, an installation hole 223 is formed inside the brake shoe 220, two brake cylinders 240 are horizontally distributed, both ends of the brake cylinders 240 are respectively connected with two brake shoes 220 in a horizontal direction, inner sidewalls of the brake shoes 220 are provided with threaded grooves, ends of the brake cylinders 240 are provided with threaded grooves, the brake cylinders 240 are connected with the brake shoes 220 through the threaded grooves and bolts, the brake disc 200 is used for braking the brake base plate 100 to reduce a rotation speed of the brake base plate 100, the materials used by the brake plate 210, the brake shoe 220, the fixed fulcrum 230 and the brake cylinder 240 are steel.

Referring to fig. 1 again, two ends of the return spring 300 are respectively connected to the brake shoes 220, a mounting hole 223 is formed in the interior of each brake shoe 220, the two return springs 300 are horizontally distributed at the front of the brake disc 200, two ends of the return spring 300 are respectively inserted into the mounting holes 223 in the interior of the two brake shoes 220 in the horizontal direction, the return spring 300 is used for connecting the two brake shoes 220 in the horizontal direction, and the return spring 300 is made of spring steel.

Referring to fig. 1 again, in order to improve the connection stability of the return spring 300, two ends of the return spring 300 respectively extend outward to form a connector 310, ends of the connector 310 are hook-shaped structures, the hook-shaped structures at the ends of the connector 310 are used for matching with the mounting holes 223, and the material of the connector 310 is spring steel.

Referring to fig. 1-2 again, in order to enable the brake disc 200 to be stably used, a connecting buckle 221 is welded and fixed at one end of the brake shoe 220, a bolt 222 is welded and fixed at the other end of the brake shoe 220, a concave groove is formed in one side wall of the fixed fulcrum 230, a pin hole is formed in the other side wall of the fixed fulcrum 230, the connecting buckle 221 is matched with the concave groove, the bolt 222 is matched with the pin hole, the connecting buckle 221 and the bolt 222 are used for improving the connection stability of the brake shoe 220, and the connecting buckle 221 and the bolt 222 are made of steel.

Referring to fig. 1 again, in order to increase the braking speed of the brake disc 200, four brake shoes 220 are formed into one brake shoe by two, one is a leading shoe, the other is a trailing shoe, and the brake shoes 220 are used for braking the brake base plate 100.

The number of the return springs 300 and the brake cylinders 240 is not limited to the specific number described in the embodiment, and those skilled in the art may increase or decrease the number as needed on the premise that the device can perform the stirring function.

The working principle is as follows: when braking, the brake cylinder 240 applies pressure to the brake piston, the brake piston moves towards two sides to push the brake shoes 220 at two sides open, the brake shoes 220 drive the return springs 300 to stretch while opening, so that the return springs 300 have elastic potential energy, the bolts 222 move outwards along the horizontal axis to enable the brake pads 210 to be in contact with the wheel hub to generate braking force, further the rotating speed of the wheel is reduced, after braking is finished, the brake cylinder 240 reduces pressure, when the brake piston retracts, the return springs 300 release the elastic potential energy, so that the four brake shoes 220 are restored to the original positions under the elastic force of the two return springs 300, the brake pads 210 are separated from the wheel hub, further braking on the wheel is relieved, and the wheel is enabled to operate normally.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A novel drum brake is characterized in that: including brake chassis (100), brake disc (200) and return spring (300), brake disc (200) are installed the preceding lateral wall of brake chassis (100), brake disc (200) are including brake block (210), brake shoe (220), fixed fulcrum (230) and braking wheel cylinder (240), brake block (210) are inlayed and are fixed in the lateral wall of brake shoe (220), brake block (210) with the inside wall contact of brake chassis (100), the quantity of brake shoe (220) is four, four brake shoe (220) present the annular and distribute, adjacent two brake shoe (220) are connected through fixed fulcrum (230), the both ends of fixed fulcrum (230) respectively with brake shoe (220) are inlayed fixedly, two levels correspond pass through between brake shoe (220) braking wheel cylinder (240) connect, mounting holes (223) are formed in the brake shoes (220), and two ends of the two return springs (300) are respectively inserted into the mounting holes (223) in the two horizontal brake shoes (220).

2. A new drum brake according to claim 1, characterised in that: two ends of the return spring (300) respectively extend outwards to form a connector (310), and the connectors (310) are hook-shaped structures.

3. A new drum brake according to claim 1, characterised in that: one end of the brake shoe (220) is fixedly welded with a connecting buckle (221), the other end of the brake shoe (220) is fixedly welded with a bolt (222), one side of the fixed fulcrum (230) is provided with a concave groove, the other side of the fixed fulcrum is provided with a pin hole, the connecting buckle (221) is matched with the concave groove, and the bolt (222) is matched with the pin hole.

4. A new drum brake according to claim 1, characterised in that: the four brake shoes (220) form a pair of leading shoes and a pair of trailing shoes.