A multipurpose wet brake

Abstract

The utility model discloses a multipurpose wet brake, in order to solve the problem that the existing wet brake is relatively complex in structure and is not compact enough, the utility model takes that the big end surface of the running piston (4) contacts with the dynamic friction plate or static friction plate, and the small end surface of the running piston (4) is connected with the parking piston (2) through a plurality of bolts and springs.

Description

Technical Field

[0001] This utility model relates to a brake, and more particularly to a multi-purpose wet brake composed of multiple dynamic friction pads, multiple static friction pads, multiple springs, a fixed plate, a driving piston, a parking piston, a brake cylinder body, and a gear ring. Background Technology

[0002] Currently, an adjustable wet brake with parking brake is publicly available on the market. Its structural features include: multiple moving friction pads, multiple stationary friction pads, multiple springs, a fixed plate, a service piston, a parking piston, a brake cylinder, and a gear ring. The moving and stationary friction pads are arranged alternately in parallel. A toothed spline is provided in the inner hole of the gear ring, and a toothed spline is also provided on the outer circumference of the stationary friction pads. The stationary friction pads are mounted on the toothed splines inside the gear ring, forming a single unit. The inner hole of the toothed spline of the moving friction pad is connected to the external spline at one end of the wheel hub. A parking piston is installed inside the brake cylinder. One end of the parking piston contacts a moving or stationary friction plate, and the other end contacts a fixed plate via multiple parking springs. A traveling piston is housed within the fixed plate. The large end face of the traveling piston contacts a gear ring via multiple return springs, and the small end face contacts a moving or stationary friction plate. Multiple moving and stationary friction plates are positioned between the traveling and parking pistons. An adjusting bolt is installed on the fixed plate, with its tip contacting the other large end face of the traveling piston. However, this structure, with multiple moving and stationary friction plates between the traveling and parking pistons, is relatively complex and not compact. Summary of the Invention

[0003] The purpose of this invention is to provide a simple and compact multi-purpose wet brake with parking brake.

[0004] To achieve the above objectives, this utility model provides a multi-purpose wet brake, comprising multiple dynamic friction pads, multiple static friction pads, multiple springs, a fixed plate, a traveling piston, a parking piston, a brake cylinder, and a gear ring. The dynamic and static friction pads are arranged alternately in parallel. A toothed spline is provided in the inner hole of the gear ring, and a toothed spline is also provided on the outer circle of the static friction pad. The static friction pad is mounted on the toothed spline inside the gear ring to form a single unit. The inner hole of the toothed spline of the dynamic friction pad is connected to the outer spline at one end of the wheel core. A parking piston is installed in the brake cylinder. One end of the parking piston contacts the dynamic or static friction pad, and the other end of the parking piston contacts the fixed plate through multiple parking springs. Multiple holes are provided on the fixed plate connected to the brake cylinder to facilitate the installation of parking springs. A traveling piston is installed inside the parking piston. The large end face of the traveling piston contacts the dynamic or static friction pad, and the small end face of the traveling piston is connected to the parking piston through multiple bolts and springs.

[0005] The parking piston is configured with a convex cross-section, so that the small end face of the parking piston contacts the dynamic friction plate or the static friction plate, and the large end face of the parking piston contacts the parking spring. Multiple screw holes that can be connected to bolts are evenly distributed in the axial direction of the parking piston.

[0006] The traveling piston is configured with an L-shaped axial cross section, and multiple holes for placing bolts and springs are evenly distributed in the axial direction of the traveling piston.

[0007] With this structure, the large end face of the traveling piston contacts the dynamic or static friction plate, while the small end face of the traveling piston is connected to the parking piston via multiple bolts and springs. Therefore, this structure is an integrated traveling and parking brake; the handbrake valve oil pipe is connected to the parking piston, and the foot pedal valve oil pipe is connected to the traveling piston. When the handbrake is released to release parking, the vehicle moves forward. While moving, pressing the foot pedal valve moves the traveling piston forward to achieve traveling braking. Releasing the foot pedal valve causes the traveling piston to retract under the pull of the traveling return spring, and the vehicle moves forward. After stopping, engaging the handbrake achieves parking. When the handbrake valve and the oil cut-off foot pedal valve oil pipes are connected in parallel with the parking piston, and the traveling piston is not connected to an oil pipe, it can achieve oil braking interrupted during movement or parking by engaging the handbrake after the vehicle stops, i.e., oil brake cut-off. This achieves a simple, compact, and multi-purpose structure. Attached Figure Description

[0008] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0009] Appendix Figure 1 This is a schematic front cross-sectional view of a multi-purpose wet brake according to the present invention.

[0010] In the diagram: 1. Fixed plate 2. Parking piston 3. Brake cylinder 4. Service piston 5. Gear ring 6. Parking spring. Detailed Implementation

[0011] Appendix Figure 1The present invention discloses a multi-purpose wet brake, comprising multiple dynamic friction pads, multiple static friction pads, multiple springs, a fixed plate 1, a traveling piston 4, a parking piston 2, a brake cylinder 3, and a gear ring 5. The dynamic and static friction pads are arranged alternately in parallel. A toothed spline is provided in the inner hole of the gear ring 5, and a toothed spline is also provided on the outer circumference of the static friction pads. The static friction pads are mounted on the toothed splines inside the gear ring 5, forming a single unit. The inner hole of the toothed spline of the dynamic friction pad is connected to the outer spline at one end of the wheel core. The parking piston 2 is installed inside the brake cylinder 3. One end of the parking piston 2 contacts either the dynamic or static friction pads, and the other end of the parking piston 2 contacts the fixed plate 1 through multiple parking springs 6. The fixed plate 1 connected to the brake cylinder 3 is provided with a number of holes for installing the parking spring 6. The driving piston 4 is provided inside the parking piston 2. The large end face of the driving piston 4 contacts the dynamic friction plate or the static friction plate, and the small end face of the driving piston 4 is connected to the parking piston 2 by a number of bolts and springs. The parking piston 2 is configured with a convex cross-section, so that the small end face of the parking piston 2 contacts the dynamic friction plate or the static friction plate, and the large end face of the parking piston 2 contacts the parking spring 6. A number of bolt holes for bolt connection are evenly distributed in the axial direction of the parking piston 2. The driving piston 4 is configured with an L-shaped axial cross-section, and a number of bolt holes for placing springs are evenly distributed in the axial direction of the driving piston 4.

Claims

1. A multi-purpose wet brake, comprising multiple dynamic friction pads, multiple static friction pads, multiple springs, a fixed plate, a traveling piston, a parking piston, a brake cylinder, and a gear ring. The dynamic and static friction pads are arranged alternately in parallel. A toothed spline is provided in the inner hole of the gear ring, and a toothed spline is also provided on the outer circumference of the static friction pads. The static friction pads are mounted on the toothed splines inside the gear ring to form a single unit. The inner hole of the toothed spline of the dynamic friction pad is connected to the outer spline at one end of the wheel core. A parking piston is installed in the brake cylinder. One end of the parking piston contacts either the dynamic or static friction pads, and the other end of the parking piston contacts the fixed plate through multiple parking springs. Multiple holes for installing parking springs are provided on the fixed plate connected to the brake cylinder. A traveling piston is installed inside the parking piston. The brake cylinder is characterized by: The large end face of the traveling piston (4) contacts the dynamic friction plate or the static friction plate, and the small end face of the traveling piston (4) is connected to the parking piston (2) by multiple bolts and springs.

2. The multi-purpose wet brake according to claim 1, characterized in that: The parking piston (2) is configured with a convex cross section, so that the small end face of the parking piston (2) contacts the dynamic friction plate or the static friction plate, and the large end face of the parking piston (2) contacts the parking spring (6). Multiple screw holes that can be connected to bolts are evenly distributed in the axial direction of the parking piston (2).

3. A multi-purpose wet brake according to claim 1, characterized in that: The traveling piston (4) is configured with an L-shaped axial cross section, and multiple holes for placing bolts and springs are evenly distributed in the axial direction of the traveling piston (4).

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