Light electric drive axle with wheel edges capable of simultaneously achieving running and parking functions
By using wheel edge structure in the light-duty electric drive axle, the parking and driving brakes are connected to a brake disc and the dual hydraulic brakes are used to solve the problem of the reducer being not compact, achieving an efficient, low-cost and lightweight electric drive axle design.
Patent Information
- Application Number
- CN202422906992.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The parking brake of the light hydraulic structure electric drive axle is arranged on the reducer intermediate shaft, resulting in the reducer structure not being compact and taking up a large space, which cannot meet the needs of high efficiency, low cost and lightweight.
The wheel edge structure is adopted, and the parking brake and driving brake are connected to a brake disc through the brake mounting plate. The dual hydraulic brake structure is used to realize the driving and parking functions respectively, reduce the transmission shaft and gear, and change it to a three-axle and two-stage design.
The compact design of the reducer is realized, reducing weight and layout space, improving efficiency, and meeting lightweight and low-cost needs.
Smart Images
Figure CN223266550U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to a hydraulic structure electric drive axle of a light commercial vehicle, and relates to a wheel side structure of the hydraulic electric drive axle which can realize driving and parking functions, and is convenient for the design of a reducer. Background Art
[0002] The electric drive axle of light vehicles such as light buses requires a hydraulic brake structure, and the parking brake is generally arranged on the intermediate shaft of the reducer to achieve the parking function.
[0003] However, due to the light hydraulic brake structure of the electric drive axle, the parking brake is arranged on the intermediate shaft of the reducer, which will cause the reducer structure to be not compact enough and occupy a large space, and cannot meet the requirements of high efficiency, low cost and lightweight. Utility Model Content
[0004] The technical problem to be solved by the utility model is: in view of the problem that the parking brake of the light hydraulic structure electric drive axle product cannot be arranged on the reducer housing due to the space limitation of the whole vehicle, a light electric drive axle with a wheel side that can simultaneously realize driving and parking functions is provided.
[0005] The technical solution of the utility model is specifically as follows:
[0006] A light electric drive axle with a wheel side capable of simultaneously realizing driving and parking functions includes a parking brake and a service brake, wherein the parking brake and the service brake are connected via a brake mounting plate, the other end of the brake mounting plate being connected to a brake disc; a service brake connection interface and a parking brake connection interface are provided on the brake mounting plate.
[0007] The brake disc includes an outer service brake friction surface, which is a disc brake and has a circular shape; the service brake friction surface is connected to the inner parking drum brake friction surface, which is a hollow cylindrical surface.
[0008] The brake mounting plate is disc-shaped as a whole, wherein the service brake connection interface includes two service brake bolt holes, both of which are located on the outer circumference, and the parking brake connection interface includes at least two parking brake bolt holes, which are located on the inner circumference.
[0009] The beneficial effects of the utility model are as follows: a dual hydraulic brake structure is adopted, the dual brakes are simultaneously connected to the brake mounting plate and share a brake disc, a single brake disc realizes the driving function, and a single brake disc realizes the parking function. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is the overall structural diagram of the utility model;
[0011] Figure 2This is a schematic diagram of the structure of the brake mounting plate;
[0012] Figure 3 It is the structural diagram of the brake disc;
[0013] Figure 4 This is the bridge shell structure diagram. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0015] like Figure 1 、 Figure 2 、 Figure 3 As shown, a light electric drive bridge with a wheel side that can simultaneously realize driving and parking functions includes a parking brake 1 and a service brake 2. The parking brake 1 and the service brake 2 are connected through a brake mounting plate 3, and the other end of the brake mounting plate 3 is connected to a brake disc 4; a service brake connection interface 31 and a parking brake connection interface 32 are provided on the brake mounting plate 3.
[0016] Furthermore, the brake disc 4 includes an outer service brake friction surface 41, which is a disc brake and has a circular ring shape; the service brake friction surface 41 is connected to the inner parking drum brake friction surface 42, which is a hollow cylindrical surface.
[0017] Furthermore, the brake mounting plate 3 is disc-shaped as a whole, wherein the service brake connection interface 31 includes two service brake bolt holes, both of which are located on the outer circumference, and the parking brake connection interface 32 includes at least two parking brake bolt holes, which are located on the inner circumference.
[0018] The working principle of this utility model is:
[0019] The wheel side adopts a brake disc 4 structure, the inner side of which serves as the parking drum brake friction surface 42, and the outer disc surface serves as the service brake friction surface 41. The parking brake 1 and the service brake 2 are connected through the brake mounting plate 3. The service brake 2 adopts a hydraulic disc brake structure, and the parking brake 1 adopts a cable-type drum brake mechanism, thereby realizing driving and parking functions. This structure can solve the problem of the close distance between the parking brake and the bridge housing, and change the reducer from four-axis three-stage to three-axis two-stage, reducing one drive shaft and two gears, making the reducer design more compact, reducing the reducer weight, and improving efficiency and saving layout space.
[0020] In this way, the wheel-side brake disc of the present invention can realize driving and parking functions at the same time, and the layout of driving and parking brakes is arranged at the same time. The present invention adopts EPB structure and uses two motors for parking brake, which meets the parking force requirements and realizes driving and parking functions at the same time.
[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.
Claims
1. A lightweight electric drive axle with wheels that can simultaneously realize driving and parking functions, characterized by: The invention comprises a parking brake (1) and a driving brake (2), wherein the parking brake (1) and the driving brake (2) are connected via a brake mounting plate (3), and the other end of the brake mounting plate (3) is connected to a brake disc (4); a driving brake connection interface (31) and a parking brake connection interface (32) are provided on the brake mounting plate (3).
2. The lightweight electric drive axle with a wheel that can simultaneously realize driving and parking functions according to claim 1, characterized in that: The brake disc (4) includes an outer service brake friction surface (41), which is a disc brake and is in the shape of a ring; the service brake friction surface (41) is connected to an inner parking drum brake friction surface (42), which is in the shape of a hollow cylinder.
3. The lightweight electric drive axle with wheels capable of simultaneously achieving driving and parking functions according to claim 1, characterized in that: The brake mounting plate (3) is disc-shaped as a whole, wherein the service brake connection interface (31) includes two service brake bolt holes, both of which are located on the outer circumference, and the parking brake connection interface (32) includes at least two parking brake bolt holes, which are located on the inner circumference.