CN109099079B

CN109099079B - Automobile brake device

Info

Publication number: CN109099079B
Application number: CN201811024969.7A
Authority: CN
Inventors: 陈玉; 程晶晶; 王鹏; 许高齐; 张新阳; 何宏颖; 李安冉
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2018-09-04
Filing date: 2018-09-04
Publication date: 2020-06-02
Anticipated expiration: 2038-09-04
Also published as: CN109099079A

Abstract

The invention discloses an automobile brake device, which relates to the technical field of automobile braking and comprises a support plate, a brake disc brake mechanism and a rotating shaft brake mechanism, wherein the brake disc brake mechanism comprises a motor and is connected with a screw rod through gear transmission, the screw rod is symmetrically provided with threads with opposite rotation directions, sleeves are symmetrically arranged at the positions of the threads with different rotation directions, a sliding rod is arranged in each sleeve in a sliding way, the end part of each sliding rod is provided with a first pressure head, a brake disc is arranged between the first pressure heads at two sides, the rotating shaft brake mechanism comprises an upper air cylinder fixing plate, a lower air cylinder fixing plate and a clamping air cylinder, the upper air cylinder fixing plate and the lower air cylinder fixing plate are fixedly arranged together through bolts, a round hole is formed in the center of a contact surface, the rotating shaft is arranged in the round hole and is fixedly connected with the, and the tail end of a piston rod of the clamping cylinder is provided with a connecting block and a second pressure head is arranged through the connecting block. The invention has compact structure, good braking effect and strong practicability.

Description

Automobile brake device

Technical Field

The invention relates to the technical field of automobile braking, in particular to an automobile braking device.

Background

Since the birth of an automobile, a vehicle brake system plays an important role in the safety of the vehicle. In recent years, this importance has become more and more apparent with the advancement of vehicle technology and the increase in the running speed of automobiles. The automobile brake system has various types and forms. The traditional brake system mainly has the structural types of mechanical type, pneumatic type, hydraulic type and gas-liquid mixing type. The brake devices are basically the same in working principle, and gradually consume the kinetic energy of the vehicle by using the friction generated during working so as to achieve the purpose of braking and decelerating the vehicle or stopping the vehicle, but only one brake device is arranged in a common automobile, and once the brake device is damaged and fails, serious traffic accidents can happen.

Chinese patent publication No. CN105253119A discloses an automobile brake device, which includes a rotating shaft, rollers disposed at both ends of the rotating shaft, and two brake mechanisms disposed respectively near the two rollers; the braking mechanism comprises a support frame fixedly connected to an automobile chassis, two hydraulic cylinders arranged on the support frame and two braking pieces fixedly connected to the end parts of telescopic rods of the hydraulic cylinders in a one-to-one correspondence mode; the telescopic rods of the two hydraulic cylinders are oppositely arranged, so that the two brake blocks can brake the rotating shaft when the two telescopic rods move relatively. The automobile brake device can achieve the braking effect in time in an emergency state, and effectively prevents traffic accidents.

Chinese patent publication No. CN103754205A discloses an automobile brake device, which comprises a brake disc, a caliper body, brake block sets, oil cylinders, 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 caliper body is arranged on the guide pin, the caliper body can move on the guide pin along the axial direction of the brake disc under the action of the oil cylinder, the brake block sets are correspondingly arranged at two sides of the brake disc, one brake block set is connected with the oil cylinder to form a main brake block set, the other brake block set is fixedly connected with the caliper body to form a slave brake block set, the guide pin is provided with a blocking device for blocking the main brake block set from approaching the brake disc when the brake block is provided with high-pressure gas, when the main brake block moves close to the brake disc, the high-pressure gas blocks the movement of the caliper body, but when a certain pressure is reached, a gas valve arranged on, the air is discharged, and when the brake is released, high-pressure air is filled into the new pair of blocking devices.

Although the brake device for a vehicle mentioned in the above-mentioned reference solves the corresponding practical problems, it does not solve the problems proposed in the present application, and therefore, a more rational design of the brake device for a vehicle is required.

Disclosure of Invention

The present invention is directed to a brake device for an automobile, which solves the above-mentioned problems of the prior art.

An automobile braking device comprises a supporting plate, a brake disc braking mechanism and a rotating shaft braking mechanism,

the brake mechanism of the brake disc comprises a motor fixing plate and a motor, the motor is horizontally arranged on the front side below a supporting plate through the motor fixing plate, a rotating shaft of the motor penetrates through the motor fixing plate, a first gear is arranged at the tail end of the rotating shaft, a second gear is meshed outside the first gear, the two gears are symmetrically arranged on two sides of the first gear and are arranged on the motor fixing plate through a supporting shaft, a third gear is meshed outside the gear, the third gear is fixedly arranged on a screw rod, threads with opposite rotation directions are symmetrically arranged on the screw rod, first sliding blocks are symmetrically arranged at the positions of the threads with different rotation directions, a sleeve is connected below the first sliding block through a connecting plate, a sliding rod is arranged in the sleeve in a sliding mode, a spring is arranged between the sliding rod and a sleeve barrel, one end of the spring is connected with the sleeve barrel, the other end, a brake disc is arranged between the first pressure heads on the two sides;

pivot arrestment mechanism includes cylinder fixed plate, lower cylinder fixed plate and die clamping cylinder, cylinder fixed plate fixed mounting be equipped with the strengthening rib in the below rear side of backup pad and between the backup pad, cylinder fixed plate and lower cylinder fixed plate pass through bolt fixed mounting and be in the same place and locate to form a round hole at the center of contact surface, be equipped with the pivot in the round hole and with brake disc fixed connection, the die clamping cylinder is installed to the symmetry on cylinder fixed plate and the lower cylinder fixed plate, die clamping cylinder's piston rod end is equipped with the connecting block and installs pressure head two through the connecting block.

Preferably, a guide rail fixing plate is installed in the middle of the lower portion of the cylinder fixing plate, a guide rail is installed on the guide rail fixing plate, a second sliding block is installed on the guide rail in a sliding mode, a second connecting plate is welded to the upper portion of the sleeves on the two sides in a horizontal mode, and the second connecting plate is fixedly installed through screws and the second sliding block.

Preferably, the guide rail is a dovetail-shaped guide rail.

Preferably, the motor is a servo motor.

Preferably, the clamping cylinder is a double-piston-rod cylinder.

Preferably, a first friction plate and a second friction plate are respectively arranged on the working surfaces of the first pressure head and the second pressure head.

The invention has the advantages that: according to the invention, the motor drives the screw rod to rotate after being transmitted by the gear set, so that the first pressure head clamps the brake disc, and further the speed reduction or braking of the automobile rotating shaft is realized; the extension of the piston rod of the clamping cylinder realizes that the second pressure head clamps the rotating shaft, realizes the deceleration or braking of the rotating shaft of the automobile, and the braking of the automobile can be well realized by using the braking device of the brake disc and the braking device of the rotating shaft in a matching way. The invention has compact structure, good braking effect and strong practicability.

Drawings

FIG. 1 is a schematic overall side view of the present invention.

Fig. 2 is a schematic structural diagram of the whole front view of the present invention.

Fig. 3 is a structural diagram of the whole rear view of the invention.

Wherein, 1-a support plate; 2-reinforcing ribs; 3-motor fixing plate; 4, mounting a cylinder fixing plate; 5-guide rail fixing plate; 6, a motor; 7-gear one; 8-gear two; 9-supporting the shaft; 10-gear three; 11-a screw; 12-a limiting block; 13-a first sliding block; 14, connecting a first plate; 15-a sleeve; 16-a spring; 17-a slide bar; 18-a first pressure head; 19-friction plate one; 20-a slide rail fixing block; 21-a second sliding block; 22-connecting plate II; 23-a clamping cylinder; 24-connecting blocks; 25-pressure head two; 26-friction plate two; 27-a rotating shaft; 28-lower cylinder fixing plate; 29-brake disc.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

As shown in fig. 1 to 3, a brake apparatus for an automobile includes a support plate 1, a brake disc brake mechanism and a rotation shaft brake mechanism,

the brake disc braking mechanism comprises a motor fixing plate 3 and a motor 6, the motor 6 is horizontally arranged on the front side of the lower portion of a supporting plate 1 through the motor fixing plate 3, a rotating shaft of the motor 6 penetrates through the motor fixing plate 3 and is provided with a first gear 7 at the tail end of the rotating shaft, the first gear 7 is externally meshed with a second gear 8, the second gear 8 is symmetrically arranged on two sides of the first gear 7 and is arranged on the motor fixing plate 3 through a supporting shaft 9, the second gear is externally meshed with a third gear 10, the third gear 10 is fixedly arranged on a screw 12, threads with opposite screwing directions are symmetrically arranged on the screw 12, first sliding blocks 13 are symmetrically arranged at the positions of the threads with different screwing directions, a first connecting plate 14 is arranged below the first sliding blocks 13 and is connected with a sleeve 15 through the first connecting plate 14, a sliding rod 17 is arranged in the sleeve 15 in a sliding, one end of the spring 16 is connected with the sleeve 15, the other end of the spring is connected with the sliding rod 17, a first pressure head 18 is arranged at the end part of the sliding rod 17, and a brake disc 29 is arranged between the first pressure heads 18 on the two sides;

pivot arrestment mechanism includes last cylinder fixed plate 4, lower cylinder fixed plate 28 and die

clamping cylinder

23, 4 fixed mounting of last cylinder fixed plate and backup pad 1 below rear side be equipped with the strengthening rib 2 between, go up cylinder fixed plate 4 and lower cylinder fixed plate 28 and locate to form a round hole through bolt fixed mounting together and at the center of contact surface, be equipped with pivot 27 and brake disc 29 fixed connection in the round hole, go up cylinder fixed plate 4 and lower cylinder fixed plate 28 and go up the symmetry and install die clamping cylinder 23, die clamping cylinder 23's piston rod end is equipped with connecting block 24 and installs pressure head two 25 through connecting block 24.

In the invention, a guide rail fixing plate 5 is arranged in the middle of the lower part of the cylinder fixing plate 3, a guide rail 20 is arranged on the guide rail fixing plate 5, a second sliding block 21 is arranged on the guide rail 20 in a sliding manner, the upper parts of the sleeves 15 at two sides are horizontally welded with a second connecting plate 22, and the second connecting plate 22 is fixedly arranged through a screw and the second sliding block 21, so that the first pressing head 18 can be supported, and the displacement precision of the first sliding block 13 can be increased.

The invention has the advantages that: according to the invention, the motor 6 drives the screw rod 11 to rotate after being transmitted by the gear set, so that the first pressure head 18 clamps the brake disc 29, and further the speed reduction or braking of the automobile rotating shaft 27 is realized; the second pressure head 25 clamps the rotating shaft 27 through the extension of the piston rod of the clamping cylinder 23, the speed reduction or braking of the automobile rotating shaft 27 is realized, and the braking of an automobile can be well realized through the matching use of a brake disc braking device and a rotating shaft braking device. The invention has compact structure, good braking effect and strong practicability.

Example 2

clamping cylinder

In the invention, the guide rail 20 is a dovetail-shaped guide rail, and can overcome the overturning moment generated in the displacement process of the first sliding block 13.

In the invention, the motor 6 is a servo motor, and the rotation direction and the rotation speed of the motor 6 can be controlled through a PLC program, so that the contact condition between the first pressure head 18 and the brake disc 29 is controlled.

In the present invention, the clamping cylinder 23 is a double-piston rod cylinder, and the second pressing head 25 can be better installed on the piston rod of the clamping cylinder 23.

In the invention, the working surfaces of the first pressure head 18 and the second pressure head 25 are respectively provided with a first friction plate 19 and a second friction plate 26, the first friction plate 19 can increase the friction force when the first pressure head 18 is contacted with the brake disc 29, and the second friction plate 25 can increase the friction force when the second pressure head 25 is contacted with the rotating shaft 27.

The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. An automotive brake device, characterized in that: the device comprises a brake block braking mechanism, a main shaft braking mechanism and a monitoring part:

the brake block braking mechanism comprises a mounting plate (1), a rotary cylinder (2) and a cylinder fixing plate I (3), the rotary cylinder (2) is horizontally mounted on the mounting plate (1) through the cylinder fixing plate I (3), an output rotating shaft of the rotary cylinder (2) penetrates through the cylinder fixing plate (3) and is provided with a coupling (4) at the tail end of the output rotating shaft, the other end of the coupling (4) is connected with a screw rod (9), the screw rod (9) is horizontally mounted on the mounting plate (1) through a screw rod mounting plate I (5) and a screw rod mounting plate II (11), threads with opposite rotating directions are symmetrically arranged on the screw rod (9), sliding blocks (7) are symmetrically mounted at the threads, a guide rail (8) is arranged between the sliding blocks (7) and the mounting plate (1), the guide rail (8) is a dovetail-shaped guide rail and is provided with limiting pins (10) at two ends of the guide, the sliding blocks (7) are in sliding connection with the guide rails (8) and are fixed on the mounting plate (1) through screws, the sliding blocks (7) on the two sides are symmetrically provided with a left connecting plate (6) and a right connecting plate (12), sleeves (13) are arranged below the left connecting plate (6) and the right connecting plate (12), first pressure heads (15) are arranged in the sleeves (13) in a sliding mode, a buffer spring (14) is additionally arranged between each sleeve (13) and each first pressure head (15), a brake disc (17) is arranged between each two first pressure heads (15), first friction plates (16) are respectively arranged on the working surfaces of the first pressure heads (15), and the brake discs (17) are fixedly mounted on a main shaft (18) of an automobile;

the main shaft brake mechanism comprises a connecting plate (19), two cylinder fixing plates (20) and a telescopic cylinder (21), the connecting plate (19) is installed on the left side of the mounting plate (1) through screws, the two cylinder fixing plates (20) are integrally inverted U-shaped and installed on the connecting plate (19), the rotary cylinder (21) is vertically installed on the top end of the two cylinder fixing plates (20) downwards, a piston rod of the rotary cylinder (21) penetrates through the two cylinder fixing plates (20) and is provided with a wedge block (22) at the tail end of the piston rod, two sides of the lower portion of the wedge block (22) are symmetrically provided with idler wheels (23) and are rotatably installed on a U-shaped frame (25) through a pin I (24), the lower portion of the U-shaped frame (25) is provided with a mounting rod (28) and hinged together through a pin II (29), and the inner side of the lower portion of the mounting rod (28) is provided with two pressure heads, the rotating shaft (18) is arranged between the two second pressure heads (30), the working surfaces of the second pressure heads (30) are respectively provided with a second friction plate (31), the second cylinder fixing plate (20) is horizontally provided with a support rod (26) through a nut, and the support rod (26) is sleeved with two first return springs (27) and arranged on the outer sides of the two U-shaped frames (25);

the monitoring part comprises a controller (32), a rotation angle sensor (33), an angular speed sensor (39), a connecting rod (37) and a pedal (38), the controller (32) is respectively connected with the rotation angle sensor (33) and the angular velocity sensor (39) through wires, the pedal (38) is fixedly connected with the connecting rod (37) and is rotatably arranged on the hinged support (35) through the rotating shaft (34), the hinged support (35) is fixed in the automobile through a screw, a second return spring (36) is arranged below the connecting rod (37), the rotation angle sensor (33) is arranged on the rotating shaft (34), the angular velocity sensor (39) is arranged right above the brake disc (17) and is arranged on the mounting plate (1), the rotary cylinder (2) and the telescopic cylinder (21) are controlled by the same electromagnetic valve, and the electromagnetic valve is connected with the controller (32) in a wired mode.