阅读说明：本技术 一种盘式制动器自吸式冷却结构 (Self-suction type cooling structure of disc brake ) 是由 张涵 王亚飞 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种盘式制动器自吸式冷却结构,属于车辆制动技术领域。制动夹钳后臂上部固定有储液缸；储液缸活塞杆中滑动套装有导杆；所述导杆前端固定在制动夹钳前臂上；制动缸外端固定有压杆,压杆上端滑动套装在储液缸活塞杆上；储液缸活塞杆端部安装有轴用挡圈,轴用挡圈抵在压杆上端前侧；储液缸活塞杆中部具有挡台；弹簧套装在储液缸活塞杆上,弹簧前端抵在压杆上端,弹簧后端抵在挡台前侧。车辆刹车时,储液缸缩回,在制动时间内储液缸内的冷却液持续流入副制动块,对副制动块进行冷却,冷却效率高,提高制动器制动效果,保证行车安全。(The invention discloses a self-suction type cooling structure of a disc brake, and belongs to the technical field of vehicle braking. A liquid storage cylinder is fixed on the upper part of the rear arm of the brake clamp; a guide rod is slidably sleeved in a piston rod of the liquid storage cylinder; the front end of the guide rod is fixed on the front arm of the braking clamp; a pressure rod is fixed at the outer end of the brake cylinder, and the upper end of the pressure rod is slidably sleeved on a piston rod of the liquid storage cylinder; the end part of the piston rod of the liquid storage cylinder is provided with a retaining ring for a shaft, and the retaining ring for the shaft is abutted against the front side of the upper end of the pressure rod; a baffle table is arranged in the middle of a piston rod of the liquid storage cylinder; the spring is sleeved on the piston rod of the liquid storage cylinder, the front end of the spring is propped against the upper end of the pressing rod, and the rear end of the spring is propped against the front side of the blocking table. When the vehicle brakes, the liquid storage cylinder retracts, the cooling liquid in the liquid storage cylinder continuously flows into the auxiliary brake block in the braking time, the auxiliary brake block is cooled, the cooling efficiency is high, the braking effect of the brake is improved, and the driving safety is guaranteed.)

1. A self-suction cooling structure of a disc brake comprises an axle (10), a brake disc (11) and a brake clamp (1); a brake cylinder (2) is mounted on the front arm of the brake caliper (1), a main brake block (3) is connected to the end of the brake cylinder (2), and an auxiliary brake block (12) is mounted on the rear arm of the brake caliper (1); the main brake block (3) and the auxiliary brake block (12) are oppositely arranged on two sides of the brake disc (11); the method is characterized in that:

a liquid storage cylinder (5) for providing cooling liquid for the auxiliary brake block (12) is fixed at the upper part of the rear arm of the brake clamp (1); a piston rod of the liquid storage cylinder (5) is of a hollow structure; a guide rod (13) is sleeved in a piston rod of the liquid storage cylinder (5) in a sliding manner; the front end of the guide rod (13) is fixed on the front arm of the braking clamp (1);

a pressure rod (4) is fixed at the outer end of the brake cylinder (2), and the upper end of the pressure rod (4) is slidably sleeved on a piston rod of the liquid storage cylinder (5); a shaft check ring (4-1) is arranged at the end part of a piston rod of the liquid storage cylinder (5), and the shaft check ring (4-1) is abutted against the front side of the upper end of the pressure rod (4); the middle part of a piston rod of the liquid storage cylinder (5) is provided with a baffle table (5-1); the spring (6) is sleeved on the piston rod of the liquid storage cylinder (5), the front end of the spring (6) abuts against the upper end of the pressure lever (4), and the rear end of the spring (6) abuts against the front side of the blocking table (5-1).

2. The self-priming cooling structure of the disc brake as claimed in claim 1, wherein the brake clamp (1) is provided with a main channel (a), an oil inlet of the liquid storage cylinder (5) is connected to the main channel (a) through an auxiliary channel I (b), and a first check valve (7) is installed in the auxiliary channel I (b); an oil outlet of the liquid storage cylinder (5) is connected to the auxiliary brake block (12) through an auxiliary channel II (c), and a second one-way valve (8) is installed in the auxiliary channel II (c); the auxiliary brake block (12) is connected to the main channel (a) through an auxiliary channel III (d), and a damper (9) is installed in the auxiliary channel III (d).

3. The self-priming cooling structure for the disc brake as claimed in claim 2, wherein the main passage (a), the auxiliary passage i (b), the auxiliary passage ii (c) and the auxiliary passage iii (d) are oil holes formed in the brake caliper (1).

4. The self-priming cooling structure for a disc brake as claimed in claim 3, wherein the primary channel (a), the secondary channel I (b), the secondary channel II (c) and the secondary channel III (d) are cast holes.

5. The self-priming cooling structure for a disc brake as claimed in claim 2, wherein the primary channel (a), the secondary channel i (b), the secondary channel ii (c) and the secondary channel iii (d) are cast holes.

6. The self-priming cooling structure of a disc brake as claimed in claim 1, wherein the front end of the guide rod (13) is provided with an external thread; a sinking groove is formed in the front arm of the braking clamp (1), and a threaded blind hole is formed in the bottom of the sinking groove; the front end of the guide rod (13) is connected and installed in a blind hole of the upper thread of the front arm of the brake clamp (1) through an external thread, and the front end of the guide rod (13) is provided with a fastening nut (14).

Technical Field

The invention relates to the technical field of vehicle braking, in particular to a self-suction cooling structure of a disc brake.

Background

A brake is a device having a function of decelerating, stopping, or maintaining a stopped state of a moving member (or a moving machine), and is an important component of an automobile. Disc brakes are a type of brake device commonly used for vehicle hubs. When a vehicle brakes in the running process, the friction between the brake block and the brake disc is relatively rubbed under high-strength pressure, a large amount of heat is generated, and the temperature of the brake part is increased. The temperature rise causes heat fading of the brake components and the braking effect is reduced, so that the cooling device must be used for cooling the brake system.

The Chinese patent discloses a cooling device (CN 206268327U) for automobile braking, which comprises a brake disc, a brake caliper body, a brake block group, an oil cylinder, a guide pin and an axle, wherein the axle is connected with the brake disc, the guide pin is fixedly arranged on the axle, the brake caliper body is arranged on the guide pin, a bulge is arranged on the brake caliper, and the brake block group is correspondingly arranged on two sides of the brake disc. The piston of the oil cylinder is fixedly connected with the main brake block group, and a plurality of slotted holes for guiding the circulation of brake fluid in the oil cylinder are formed in the piston along the direction of the main brake block. The brake master is cooled by the brake fluid in the oil cylinder, so that the problem of brake failure caused by the temperature rise of the brake block group is solved. The defects of the technology are as follows: the cooling of the secondary brake pad is lacking and the cooling efficiency of the brake assembly is therefore reduced.

Disclosure of Invention

In order to solve the technical problem, the invention provides a self-suction cooling structure of a disc brake.

The invention adopts the following technical scheme: the invention provides a self-suction cooling structure of a disc brake, which comprises an axle, a brake disc and a brake clamp; a brake cylinder is mounted on the front arm of the brake caliper, the end part of the brake cylinder is connected with a main brake block, and an auxiliary brake block is mounted on the rear arm of the brake caliper; the main brake block and the auxiliary brake block are oppositely arranged on two sides of the brake disc; a liquid storage cylinder for providing cooling liquid for the auxiliary brake block is fixed at the upper part of the rear arm of the brake clamp; a piston rod of the liquid storage cylinder is of a hollow structure; a guide rod is slidably sleeved in a piston rod of the liquid storage cylinder; the front end of the guide rod is fixed on the front arm of the braking clamp; a pressure rod is fixed at the outer end of the brake cylinder, and the upper end of the pressure rod is slidably sleeved on a piston rod of the liquid storage cylinder; the end part of the piston rod of the liquid storage cylinder is provided with a retaining ring for a shaft, and the retaining ring for the shaft is abutted against the front side of the upper end of the pressure rod; a baffle table is arranged in the middle of a piston rod of the liquid storage cylinder; the spring is sleeved on the piston rod of the liquid storage cylinder, the front end of the spring is propped against the upper end of the pressing rod, and the rear end of the spring is propped against the front side of the blocking table.

It further comprises the following steps: the brake clamp is provided with a main channel, an oil inlet of the liquid storage cylinder is connected to the main channel through an auxiliary channel I, and a first one-way valve is installed in the auxiliary channel I; the oil outlet of the liquid storage cylinder is connected to the auxiliary brake block through an auxiliary channel II, and a second one-way valve is installed in the auxiliary channel II; the auxiliary brake block is connected to the main channel through an auxiliary channel III, and a damper is installed in the auxiliary channel III.

The main channel, the auxiliary channel I, the auxiliary channel II and the auxiliary channel III are oil holes formed in the brake clamp.

The main channel, the auxiliary channel I, the auxiliary channel II and the auxiliary channel III are casting holes.

The main channel, the auxiliary channel I, the auxiliary channel II and the auxiliary channel III are metal tubes fixed on the braking clamp.

The front end of the guide rod is provided with an external thread; a sinking groove is formed in the front arm of the brake clamp, and a threaded blind hole is formed in the bottom of the sinking groove; the front end of the guide rod is connected and installed in a threaded blind hole on the front arm of the brake clamp through an external thread, and a fastening nut is arranged at the front end of the guide rod.

The invention has the beneficial effects that: when the vehicle is braked, the brake cylinder is ejected out, the liquid storage cylinder is pushed through the pressure lever, and the cooling liquid enters the auxiliary brake block to realize the brake cooling of the auxiliary brake block; a spring is arranged between the pressure rod and the liquid storage cylinder to limit the retraction speed of the liquid storage cylinder, and a liquid return port of the auxiliary brake block is provided with a damping to limit the backflow speed, so that the cooling liquid in the liquid storage cylinder can be ensured to continuously flow into the auxiliary brake block in the braking time, and the braking cooling efficiency is improved; when the brake cylinder retracts, the liquid storage cylinder is driven to extend out through the pressure rod, and the liquid storage cylinder is matched with the two one-way valves and the damping to suck cooling liquid for next brake cooling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the present invention.

Description of reference numerals: 1. braking the clamp; 2. a brake cylinder; 3. a master brake pad; 4. a pressure lever; 4-1, a retainer ring for a shaft; 5. a liquid storage cylinder; 5-1, blocking the platform; 6. a spring; 7. a first check valve; 8. a second one-way valve; 9. damping; 10. an axle; 11. a brake disc; 12. a secondary brake pad; 13. a guide bar; 14. fastening a nut; a. a main channel; b. a secondary channel I; c. a secondary channel II; d. and a secondary channel III.

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.

As shown in fig. 1, the self-priming cooling structure of the disc brake comprises an axle 10, a brake disc 11 and a brake clamp 1; a brake cylinder 2 is arranged on the front arm of the brake caliper 1, a main brake block 3 is connected to the end part of the brake cylinder 2, and an auxiliary brake block 12 is arranged on the rear arm of the brake caliper 1; the master brake pad 3 and the slave brake pad 12 are disposed on opposite sides of the brake disc 11.

The improvement of the embodiment is that: the liquid storage cylinder 5 is fixed on the upper part of the rear arm of the brake clamp 1 through bolts or welding, and the liquid storage cylinder 5 is used for supplying cooling liquid to the auxiliary brake block 12 during braking. The piston rod of the liquid storage cylinder 5 is arranged forwards, and the front end of the piston rod is of a hollow structure provided with a shaft center hole. The front end of the guide rod 13 is provided with an external thread, the front arm of the brake clamp 1 is provided with a sinking groove, and the bottom of the sinking groove is provided with a threaded blind hole opposite to the guide rod 13. The front end of the guide rod 13 is connected and installed in a threaded blind hole on the front arm of the brake clamp 1 through external threads, and is fastened through a fastening nut 14, and the fastening nut 14 does not exceed a sinking groove on the front arm of the brake clamp 1. The guide rod 13 is slidably sleeved in a shaft center hole at the front end of the piston rod and plays a role in guiding in the telescopic process of the liquid storage cylinder 5.

The outer end of the brake cylinder 2 is fixed with a pressure lever 4, the upper end of the pressure lever 4 is of a hollow slip ring structure, and a slip ring at the upper end of the pressure lever 4 is slidably sleeved on a piston rod of the liquid storage cylinder 5. The end part of a piston rod of the liquid storage cylinder 5 is provided with a shaft check ring 4-1, the shaft check ring 4-1 is abutted against the front side of the upper end of the pressure rod 4, and when the brake cylinder 2 retracts, the pressure rod 4 pushes the shaft check ring 4-1 forwards to drive the piston rod of the liquid storage cylinder 5 to extend out to complete liquid suction. The middle part of a piston rod of the liquid storage cylinder 5 is provided with a baffle table 5-1, the front end of a spring 6 is propped against the upper end of the pressure rod 4, and the rear end of the spring 6 is propped against the front side of the baffle table 5-1. When the brake cylinder 2 is extended, the pressure rod 4 pushes the spring 6 backwards, and the spring 6 pushes the liquid storage cylinder 5 backwards to retract a piston rod. The arrangement of the spring 6 ensures that the retraction process of the piston rod of the liquid storage cylinder 5 does not correspond to that of the brake cylinder 2, when the brake cylinder 2 is completely extended to start braking, the spring 6 provides continuous pressure for the piston rod of the liquid storage cylinder 5, and the continuous extrusion of cooling liquid in the liquid storage cylinder 5 is ensured.

The main channel a, the auxiliary channel Ib, the auxiliary channel IIc and the auxiliary channel IIId are casting holes on the brake caliper 1. The main channel a is connected with a cooling liquid storage device, and the cooling liquid storage device can increase certain pressure, so that the flow of the cooling liquid is smoother. An oil inlet of the liquid storage cylinder 5 is connected to the main channel a through an auxiliary channel Ib, and a first one-way valve 7 is installed in the auxiliary channel Ib to ensure that cooling liquid flows into the liquid storage cylinder 5 in a one-way mode. An oil outlet of the liquid storage cylinder 5 is connected to the auxiliary brake block 12 through an auxiliary channel IIc, and a second one-way valve 8 is installed in the auxiliary channel IIc to ensure that cooling liquid flows into the auxiliary brake block 12 in a one-way mode. The auxiliary brake block 12 is connected to the main channel a through an auxiliary channel IIId, and a damper 9 is installed in the auxiliary channel IIId; the damper 9 limits the outflow speed of the cooling liquid on one hand, improves the cooling efficiency, and is convenient to prevent the suction phenomenon in the auxiliary brake block 12 when the liquid storage tank 5 absorbs liquid.

The working principle is as follows: when the brake cylinder 2 is ejected out during the braking of the vehicle, the liquid storage cylinder 5 is pushed through the pressure lever 4, and the cooling liquid enters the auxiliary brake block 12, so that the brake cooling of the auxiliary brake block 12 is realized; in the process, a spring 6 is arranged between the pressure rod 4 and the liquid storage cylinder 5 to limit the retraction speed of the liquid storage cylinder 5, and a liquid return port of the auxiliary brake block 12 is provided with a damper 9 to limit the return speed, so that the coolant in the liquid storage cylinder 5 can continuously flow into the auxiliary brake block 12 in the braking time, and the braking cooling efficiency is improved; when the brake cylinder 2 retracts, the compression rod 4 pushes the shaft check ring 4-1 forwards to drive the piston rod of the liquid storage cylinder 5 to extend, and the liquid storage cylinder 5 is matched with the two one-way valves and the damper 9 to suck cooling liquid for next braking and cooling.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.