CN211314924U

CN211314924U - Double-cylinder floating brake caliper

Info

Publication number: CN211314924U
Application number: CN201922310600.9U
Authority: CN
Inventors: 王开怀
Original assignee: Pingxiang Fangyuan Industry Co ltd
Current assignee: Pingxiang Fangyuan Industry Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-21
Anticipated expiration: 2029-12-20

Abstract

The utility model belongs to the technical field of the car braking, especially, relate to a double-cylinder floating braking pincers. The to-be-solved technical problem of the utility model is to provide a double piston produces braking force simultaneously, and does not influence the floating braking pincers of double-cylinder of mounted position. A double-cylinder floating brake caliper comprises a cylinder body, an air discharge nozzle, a bracket, a bolt, a sliding pin, a sliding sleeve, a friction plate, a piston, a sealing ring and a dust ring; sliding sleeves are arranged at two ends of the support, the sliding pins are connected with the sliding sleeves in a sliding mode, and the cylinder body is in threaded connection with the sliding pins through bolts; an oil filling port is arranged in the middle of the front side of the cylinder body, and air discharging nozzles are arranged at two ends of the cylinder body. The utility model discloses a set up two pistons in the cylinder body, when braking system starts, two pistons produce the effort simultaneously, can produce bigger braking force and brake the brake disc, and braking effect is better, need not increase the diameter of piston simultaneously, does not influence the annular installation of braking pincers on the brake disc.

Description

Double-cylinder floating brake caliper

Technical Field

The utility model belongs to the technical field of the car braking, especially, relate to a double-cylinder floating braking pincers.

Background

A brake refers to a component that generates a braking torque, a force to oppose motion or a tendency of motion of a vehicle. Friction brakes, which use the friction between a stationary element and a working surface of a rotating element to generate a braking torque, are often used in automobiles. The caliper of a floating caliper disc brake is generally designed to slide axially relative to the brake disc. The hydraulic cylinder is arranged only on the inner side of the brake disc, the brake block on the outer side is attached to a caliper body, a brake caliper bracket is fixed on a steering knuckle, and the brake caliper body and the bracket can slide axially along a guide pin. During braking, the piston pushes the movable brake block (with the friction block abrasion alarming device) to the brake disc under the action of hydraulic pressure, and meanwhile, the counterforce acted on the brake caliper body pushes the brake caliper body to move rightwards along the guide pin, so that the fixed brake block fixed on the brake caliper body is pressed against the brake disc. The friction blocks on two sides of the brake disc clamp the brake disc under the action of hydraulic pressure and reaction force, so that the brake disc generates braking torque on the brake disc in opposite movement directions, and the automobile is braked.

The existing floating caliper disc brake is only provided with one piston and is usually installed on a car, and some engineering machinery such as a forklift and other smaller cars which are slightly larger can cause insufficient braking force if the existing floating caliper disc brake is used, and the diameter of the piston can not be too large due to the limitation of the installation position, so that the double-piston floating caliper brake which can generate braking force simultaneously and does not influence the installation needs to be developed at present to overcome the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome current floating caliper disc brake and only be provided with a piston, use the shortcoming that the braking force that probably produces is not enough on some middle-size and small-size engineering machine tools, the to-be-solved technical problem of the utility model is to provide a double-piston produces braking force simultaneously, and does not influence the floating braking pincers of double-cylinder of installation.

The utility model is achieved by the following concrete technical means:

a double-cylinder floating brake caliper comprises a cylinder body, an air discharge nozzle, a bracket, a bolt, a sliding pin, a sliding sleeve, a friction plate, a piston, a sealing ring and a dust ring; sliding sleeves are arranged at two ends of the support, the sliding pins are connected with the sliding sleeves in a sliding mode, and the cylinder body is in threaded connection with the sliding pins through bolts; an oil filling port is arranged in the middle of the front side of the cylinder body, and air discharging nozzles are arranged at two ends of the cylinder body; the cavity in the cylinder body is provided with two pistons, the end part of the piston, which is far away from the oil injection port, is sequentially provided with a sealing ring and a dustproof ring, and the sealing ring and the dustproof ring are embedded in a groove in the cylinder body and are attached to the pistons; the two ends of the bracket are provided with sliding chutes, and the sliding chutes are positioned below the sliding sleeve; friction plates are symmetrically arranged at two ends of the sliding groove, one friction plate is attached to the end of the piston, and the other friction plate is attached to the cylinder body.

Furthermore, a dustproof sleeve is sleeved between the sliding pin and the sliding sleeve.

Furthermore, the top of the cylinder body is provided with 2 heat dissipation holes.

Furthermore, a nameplate is arranged at the top of the cylinder body.

Furthermore, the dustproof ring and the sealing ring are both made of ethylene propylene diene monomer.

Furthermore, the support and the cylinder body are made of QT450 nodular cast iron.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a set up two pistons in the cylinder body, when braking system starts, two pistons produce the effort simultaneously, can produce bigger braking force and brake the brake disc, and braking effect is better, need not increase the diameter of piston simultaneously, does not influence the annular installation of braking pincers on the brake disc, can not be because the finite existence too big restriction of mounted position.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic view of the structure of the right side of the present invention.

Fig. 4 is a schematic cross-sectional view of a-a in fig. 1 according to the present invention.

Fig. 5 is a schematic diagram of the explosion structure of the present invention.

The labels in the figures are: 1-cylinder body, 2-oil injection port, 3-air tap, 4-bracket, 5-bolt, 6-sliding pin, 7-dust-proof sleeve, 8-sliding sleeve, 9-heat dissipation hole, 10-nameplate, 11-friction plate, 12-piston, 13-sealing ring, 14-dust-proof ring, and 15-chute.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Examples

A double-cylinder floating brake caliper is shown in figures 1-5 and comprises a cylinder body 1, an air discharge nozzle 3, a support 4, a bolt 5, a sliding pin 6, a sliding sleeve 8, a friction plate 11, a piston 12, a sealing ring 13 and a dust ring 14; sliding sleeves 8 are arranged at two ends of the support 4, the sliding pin 6 is connected with the sliding sleeves 8 in a sliding mode, and the cylinder body 1 is in threaded connection with the sliding pin 6 through a bolt 5; an oil filling port 2 is arranged in the middle of the front side of the cylinder body 1, and air discharging nozzles 3 are arranged at the two ends of the cylinder body; two pistons 12 are arranged in a cavity in the cylinder body 1, a sealing ring 13 and a dust ring 14 are sequentially arranged at the end part of the piston 12 far away from the oil injection port 2, and the sealing ring 13 and the dust ring 14 are embedded in a groove in the cylinder body 1 and are attached to the piston 12; the two ends of the bracket 4 are both provided with sliding chutes 15, and the sliding chutes 15 are positioned below the sliding sleeve 8; friction plates 11 are symmetrically arranged at two ends of the sliding chute 15, one friction plate 11 is attached to the end of the piston 12, and the other friction plate 11 is attached to the cylinder body 1.

Use fork truck as an example, when this double-cylinder floating brake pincers were installed, with 4 spiro unions of support in fork truck front axle positions for the brake disc of fork truck front wheel is located between two friction discs 11, and with fork truck's braking system and oiling mouth 2 intercommunication, debugs again, opens bleeding mouth 3 this moment, tramples brake pedal with the evacuation air repeatedly, until 3 blowout brake fluid of bleeding mouth, screws up bleeding mouth 3.

When the forklift braking system is started, hydraulic oil is squeezed, the piston 12 pushes the friction plate 11 attached to the piston to move axially to lean against a brake disc under the action of hydraulic force, after the friction plate 11 is contacted with the brake disc, the axial movement cannot be continued, at the moment, the cylinder body 1 moves axially under the action of reaction force through the matching of the sliding pin 6 and the sliding sleeve 8, so that the other friction plate 11 leans against the brake disc, and the brake disc rotating at high speed can be braked.

When the hydraulic pressure disappears after the braking system of the forklift stops, and the piston 12 moves axially, the sealing ring 13 attached to the piston is made of rubber and can generate certain elastic deformation, so that after the hydraulic pressure disappears, the piston 12 can be driven to return to the initial position, and a certain acting force can be generated when the brake disc rotates, so that the friction plates 11 in contact with the two sides of the brake disc are bounced off, and the brake disc returns to the initial position.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. A double-cylinder floating brake caliper comprises a cylinder body (1) and a support (4), and is characterized by comprising a sliding pin (6), a friction plate (11) and a piston (12); sliding sleeves (8) are arranged at two ends of the support (4), the sliding pin (6) is connected with the sliding sleeves (8) in a sliding mode, and the cylinder body (1) is connected with the sliding pin (6) in a threaded mode through a bolt (5); an oil filling port (2) is arranged in the middle of the front side of the cylinder body (1), and air release nozzles (3) are arranged at the two ends of the cylinder body; two pistons (12) are arranged in a cavity in the cylinder body (1), a sealing ring (13) and a dust ring (14) are sequentially arranged at the end part of the piston (12) far away from the oil injection port (2), and the sealing ring (13) and the dust ring (14) are embedded in a groove in the cylinder body (1) and are attached to the pistons (12); the two ends of the support (4) are provided with sliding grooves (15), and the sliding grooves (15) are positioned below the sliding sleeve (8); friction plates (11) are symmetrically arranged at two ends of the sliding groove (15), one friction plate (11) is attached to the end of the piston (12), and the other friction plate (11) is attached to the cylinder body (1).

2. Double-cylinder floating brake caliper according to claim 1, characterized in that a dust boot (7) is fitted between the sliding pin (6) and the sliding sleeve (8).

3. The double-cylinder floating brake caliper according to claim 2, characterized in that the top of the cylinder (1) is provided with heat dissipation holes (9), and the number of the heat dissipation holes (9) is 2.

4. Double cylinder floating brake caliper according to claim 3, characterized in that the cylinder (1) is provided with a nameplate (10) on top.

5. The double-cylinder floating brake caliper according to claim 4, characterized in that the dust ring (14) and the sealing ring (13) are made of ethylene propylene diene monomer.

6. The double-cylinder floating brake caliper according to claim 5, characterized in that the material of the bracket (4) and the cylinder body (1) is QT450 ductile iron.