Dual rim wheel edge retarder service brake system

Abstract

The utility model discloses a kind of dual rim wheel edge speed reducer vehicle braking systems, including the mainframe being connected with frame, the one end of mainframe is provided with driving motor, the other end is provided with speed reducer;The outside of speed reducer is provided with coaxial rotary cylinder, the input shaft of speed reducer is fixedly connected with the output shaft of driving motor, the output planet carrier of speed reducer is fixedly connected with the rotary cylinder;The outside of mainframe is coaxially provided with the output outer cylinder rotationally connected therewith, the outside of output outer cylinder is fixedly connected with the first rim and the second rim arranged side by side;One end of output outer cylinder is fixedly connected with rotary cylinder, brake is arranged between the other end of output outer cylinder and mainframe, and the brake is located first rim / second rim inside.The utility model is compact in structure, control is sensitive, effectively shorten the axial length of electric wheel assembly, help to control whole vehicle width, solve the arrangement problem of brake under the width limited working condition.

Description

Technical Field

[0001] This utility model relates to the field of wheel-side reducer brake technology, and in particular to a double-rim wheel-side reducer service braking system. Background Technology

[0002] For heavy-duty trucks, off-road vehicles, and large mining trucks, a two-stage final drive structure is typically used to meet the requirements of a large main drive ratio and high ground clearance. The second-stage reduction mechanism (i.e., wheel-side reducers) is positioned near the drive wheels on both sides, along with service brakes. However, current mainstream designs place the brakes closer to the motor and further away from the wheel-side reducers, resulting in the occupancy of valuable axial space in the chassis and a significant increase in overall vehicle width. This drawback is particularly pronounced in open-pit mines where road width is limited, severely impacting the vehicle's passing ability and maneuverability. For large mining trucks that must use dual rims to enhance load-bearing capacity, controlling overall vehicle width and meeting regulatory compliance present even greater challenges. Furthermore, the long hydraulic brake lines connecting the brakes increase the risk of system leakage and potential failure rates. In summary, existing brake placement schemes have significant shortcomings in terms of overall vehicle layout, maintenance convenience, and system reliability, necessitating the design of an innovative braking system layout to address these issues. Summary of the Invention

[0003] To solve the above problems, this utility model provides a dual-rim wheel-side reducer service braking system that occupies less vehicle width, specifically adopting the following technical solution: The dual-rim wheel-side reducer vehicle braking system of this utility model includes a main frame connected to the vehicle frame. A drive motor is provided at one end of the main frame, and a reducer is provided at the other end. A coaxial rotary cylinder is provided on the outer side of the reducer. The input shaft of the reducer is fixedly connected to the output shaft of the drive motor, and the output planetary carrier of the reducer is fixedly connected to the rotary cylinder. An output outer cylinder is coaxially provided on the outer side of the main frame and rotatably connected thereto. The outer side of the output outer cylinder is fixedly connected to a first rim and a second rim arranged in parallel. One end of the output outer cylinder is fixedly connected to the rotary cylinder, and a brake is provided between the other end of the output outer cylinder and the main frame. The brake is located inside the first rim / second rim.

[0004] Preferably, the main frame is an axisymmetric hollow cylindrical structure. One end of the main frame is provided with a motor mounting seat connected to the drive motor, and the other end of the main frame is provided with a reducer mounting seat connected to the reducer. The central cavity of the main frame is used to pass through the input shaft of the reducer and the output shaft of the drive motor. A brake mounting seat is provided on the outer side of the main frame near the motor mounting seat.

[0005] Preferably, the brake includes a brake caliper and a brake disc. One side arm of the brake caliper is fixedly connected to the brake mounting base. The opening of the brake caliper faces the central axis of the main frame. The brake disc is a U-shaped annular structure. The opening of the brake disc is opposite to the opening of the brake caliper. One side wing of the brake disc is fixedly connected to the end of the output outer cylinder. The other side wing of the brake disc is inserted between the two arms of the brake caliper.

[0006] Preferably, the brake caliper is connected to the master cylinder via a hydraulic pipe.

[0007] Preferably, the input shaft of the reducer is fixedly connected to the output shaft of the drive motor via a coupling.

[0008] Preferably, at least two rotating bearings are provided between the output outer cylinder and the main frame.

[0009] Preferably, the drive motor is located inside the axle housing.

[0010] The dual-rim wheel-side reducer vehicle braking system provided by this utility model has a compact structure and sensitive operation. Its ingenious design of the main frame structure, which installs the brake between the drive motor and the reducer, makes reasonable and efficient use of the limited space between the main frame and the rim, effectively shortening the axial length of the electric wheel assembly. This helps to control the overall vehicle width and solves the problem of brake placement under width-constrained conditions. The brake is located between the drive motor and the reducer, and the distance between it and the front wheel brake master cylinder is shortened, effectively solving the risk of oil leakage caused by excessively long hydraulic lines and improving the sealing reliability and overall safety of the braking system. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 Enlarged view of part A. Detailed Implementation

[0013] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific working processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0014] like Figure 1 , 2As shown, the dual-rim wheel-side reducer vehicle braking system of this utility model includes a main frame 1 connected to the vehicle frame. The main frame 1 is an axisymmetric hollow cylindrical structure. One end of the main frame 1 is provided with a motor mounting seat for mounting a drive motor 2 (the drive motor 2 is located inside the axle housing); the other end of the main frame 1 is provided with a reducer mounting seat for mounting a reducer 3. The output shaft of the drive motor 2 and the input shaft of the reducer 3 are coaxially arranged, both located in the central cavity of the main frame 1, and are fixedly connected together by a coupling. A brake mounting seat 4 is provided on the outer side of the main frame 1 near the drive motor 2, and an output outer cylinder 6 is rotatably mounted near the reducer 3. The brake mounting seat 4 and the output outer cylinder 6 are spaced apart for mounting brakes 7.

[0015] The aforementioned output outer cylinder 6 is coaxially arranged with the main frame 1, and at least two rotating bearings 8 are provided between them. The output outer cylinder 6 is fixedly connected to the first wheel rim 91 and the second wheel rim 92 arranged side by side on the outside. It rotates under the drive of the reducer 3 and is decelerated and braked under the action of the brake 7.

[0016] Specifically, a coaxial rotary drum 31 is provided on the outer side of the reducer 3. One end of the rotary drum 31 is fixedly connected to the output planetary carrier 32 of the reducer 3, and the other end is fixedly connected to the output outer cylinder 6. When the drive motor 2 starts, the reducer 3 works to achieve the purpose of speed reduction and torque increase. Through the output planetary carrier 32, the rotary drum 31, the output outer cylinder 6, the first rim 91 and the second rim 92 are driven to rotate synchronously.

[0017] The brake 7 is installed between the brake mounting seat 4 and the output outer cylinder 6 inside the first wheel rim 91, and mainly consists of a brake caliper 71 and a brake disc 72. The brake caliper 71 is connected to the master cylinder via a hydraulic pipe, with its opening facing the central axis of the main frame 1. One of its caliper arms is fixedly connected to the brake mounting seat 4. The brake disc 72 is a U-shaped annular structure, which is opposite to and staggered with the opening of the brake caliper 71. Specifically, one wing of the brake disc 72 is fixedly connected to the end of the output outer cylinder 6, and the other wing is inserted between the two caliper arms of the brake caliper 71. When deceleration is required, the master cylinder is activated, causing the two caliper arms of the brake caliper 71 to tighten, pressing against the wing of the brake disc 72, thereby generating a frictional torque that causes the brake disc 72, the output outer cylinder 6, the first wheel rim 91, and the second wheel rim 92 to brake and decelerate.

[0018] One or more brakes 7 may be installed on the brake mounting base 4.

[0019] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A vehicle braking system with a dual-rim wheel-side reducer, characterized in that: The system includes a main frame connected to the vehicle frame. A drive motor is mounted on one end of the main frame, and a speed reducer is mounted on the other end. A coaxial rotary cylinder is mounted on the outer side of the speed reducer. The input shaft of the speed reducer is fixedly connected to the output shaft of the drive motor, and the output planetary carrier of the speed reducer is fixedly connected to the rotary cylinder. An output outer cylinder is coaxially mounted on the outer side of the main frame and rotatably connected thereto. The outer side of the output outer cylinder is fixedly connected to a first wheel rim and a second wheel rim arranged in parallel. One end of the output outer cylinder is fixedly connected to the rotary cylinder, and a brake is mounted between the other end of the output outer cylinder and the main frame. The brake is located inside the first wheel rim / second wheel rim.

2. The dual-rim wheel-side reducer service braking system according to claim 1, characterized in that: The main frame is an axisymmetric hollow cylindrical structure. One end of the main frame is provided with a motor mounting base connected to the drive motor, and the other end of the main frame is provided with a reducer mounting base connected to the reducer. The central cavity of the main frame is used to pass through the input shaft of the reducer and the output shaft of the drive motor. A brake mounting base is provided on the outer side of the main frame near the motor mounting base.

3. The dual-rim wheel-side reducer service braking system according to claim 2, characterized in that: The brake includes a brake caliper and a brake disc. One side arm of the brake caliper is fixedly connected to the brake mounting base. The opening of the brake caliper faces the central axis of the main frame. The brake disc is a U-shaped annular structure. The opening of the brake disc is opposite to the opening of the brake caliper. One side wing of the brake disc is fixedly connected to the end of the output outer cylinder. The other side wing of the brake disc is inserted between the two arms of the brake caliper.

4. The dual-rim wheel-side reducer service braking system according to claim 3, characterized in that: The brake caliper is connected to the master cylinder via a hydraulic pipe.

5. The dual-rim wheel-side reducer service braking system according to claim 1, characterized in that: The input shaft of the reducer is fixedly connected to the output shaft of the drive motor via a coupling.

6. The dual-rim wheel-side reducer service braking system according to claim 1, characterized in that: At least two rotating bearings are provided between the output outer cylinder and the main frame.

7. The dual-rim wheel-side reducer service braking system according to claim 1, characterized in that: The drive motor is located inside the axle housing.

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