Electric steering axle structure for small sanitation vehicle

Abstract

The utility model discloses an electric steering axle structure for a small-sized sanitation vehicle, which comprises a steering axle rod, two ends of the steering axle rod are respectively provided with a steering knuckle, the steering knuckles are fixedly connected with wheels, an electronic power-assisted steering gear assembly is fixedly mounted on the steering axle rod, two ends of the electronic power-assisted steering gear assembly are respectively connected with the steering knuckles in a hinged manner, and the steering knuckles are fixedly mounted on the steering axle rod. The steering knuckle can be controlled through the electronic power-assisted steering gear box to achieve left and right steering of the wheel, the electronic power-assisted steering gear box assembly is integrally installed between the steering arm and the axle housing, the electronic power-assisted steering gear box assembly can increase the steering angle of the wheel, the steering angle of the wheel can reach 45 degrees or above through three-dimensional simulation, and the steering angle of the wheel can reach 45 degrees or above. The whole vehicle flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body steering structures, in particular to an electric steering axle structure for a small sanitation vehicle. Background Art

[0002] Small sanitation vehicles are highly flexible and are widely used as special vehicles for urban appearance and cleaning. As the steering component of small sanitation vehicles, the rational design of the steering axle structure often directly affects the actual working efficiency of small sanitation vehicles.

[0003] The steering axle structure of an existing small sanitation vehicle mainly includes a steering axle body, a steering knuckle and a double-piston rod cylinder, wherein a connecting rod is rotatably connected between the free end of the tie rod of the double-piston rod cylinder and the steering knuckle, the end of the steering axle body is fixedly connected to the steering knuckle, the steering knuckle is connected to the vehicle body wheel hub, and the double-piston rod cylinder is connected to the steering knuckle through a connecting rod to form a trapezoidal structure, resulting in a small turning angle of the vehicle body wheel hub being limited by its own steering trapezoidal structure (generally the inner turning angle is within 35°), which affects the flexibility of the entire vehicle. Utility Model Content

[0004] The utility model aims to provide an electric steering axle structure for a small sanitation vehicle, which is used to solve the problem of small turning angle of the vehicle body wheel hub in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An electric steering axle structure for a small sanitation vehicle comprises a steering axle rod, two ends of the steering axle rod are respectively provided with steering knuckles, the steering knuckles are fixedly connected to wheels, an electronic power steering machine assembly is fixedly installed on the steering axle rod, and two ends of the electronic power steering machine assembly are respectively hinged to the steering knuckles.

[0007] As a further solution of the utility model: the electronic power steering assembly includes a power-assisted motor, a motor controller is installed on the top of the power-assisted motor, a worm gear reduction mechanism is installed on the bottom, electric push rods are respectively connected on both sides of the worm gear reduction mechanism, and a movable ball head is provided at the end of the electric push rod away from the worm gear reduction mechanism.

[0008] As a further solution of the utility model: the movable ball head is hingedly connected to a pull arm, and the pull arm is vertically connected to the steering knuckle.

[0009] As a further solution of the utility model: the worm gear reduction mechanism is installed in the middle position of the steering bridge rod through a mounting arm assembly.

[0010] As a further solution of the utility model: the motor controller is electrically connected to the vehicle VCU and the power-assisting motor.

[0011] Advantages of the present utility model: In this application, the electronic power steering gear can control the steering knuckle to realize the left and right steering of the wheels. The electronic power steering gear assembly is integrally installed between the steering arm and the axle housing. The electronic power steering gear assembly can increase the steering angle of the wheels. Through three-dimensional simulation, the steering angle of the wheels can reach more than 45°, improving the flexibility of the whole vehicle. Description of the Drawings

[0012] The following further describes the present utility model with reference to the drawings.

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is Figure 1 the schematic structural view of the steering rod in

[0015] Figure 3 is Figure 1 the schematic structural view of the electronic power steering gear assembly in

[0016] In the figure: 1, steering axle rod; 2, steering knuckle; 3, wheel; 4, electronic power steering gear assembly; 40, assist motor; 41, motor controller; 42, worm and worm gear reduction mechanism; 43, electric push rod; 44, movable ball head; 5, pull arm; 6, mounting arm. Detailed Embodiments

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be understood that the terms indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model; in the description of the present utility model, the meanings of "a plurality" and "several" are at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0019] Please refer to Figures 1 to 3As shown, the utility model is an electric steering axle structure for a small sanitation vehicle, including a steering axle rod 1, two ends of the steering axle rod 1 are respectively provided with steering knuckles 2, the steering knuckle 2 is fixedly connected to the wheel 3, an electronic power steering gear assembly 4 is fixedly installed on the steering axle rod 1, and two ends of the electronic power steering gear assembly 4 are respectively hinged to the steering knuckle 2.

[0020] During the use of the electric steering axle structure of the present application, the electronic power steering gear assembly 4 can control the steering knuckle 2 to realize the left and right steering of the wheel 3. The electronic power steering gear assembly 4 is integrated and installed between the steering arm and the bridge housing. The electronic power steering gear assembly 4 can increase the steering angle of the wheel 3. Through three-dimensional simulation, the steering angle of the wheel 3 can reach more than 45°, thereby improving the flexibility of the entire vehicle.

[0021] In this specific embodiment, the electronic power steering assembly 4 includes a power-assisted motor 40, a motor controller 41 is installed at the top of the power-assisted motor 40, a worm gear reduction mechanism 42 is installed at the bottom, and electric push rods 43 are respectively connected on both sides of the worm gear reduction mechanism 42. A movable ball head 44 is provided at the end of the electric push rod 43 away from the worm gear reduction mechanism 42, so as to facilitate the power output of the worm gear reduction mechanism 42 through the power-assisted motor 40. The power output torque is output at a reduced speed through the worm gear reduction mechanism 42. The steering knuckle 2 is controlled by stretching and shortening the electric push rod 43 to realize left and right steering of the wheel 3, and the electric push rod 43 can control the extension and retraction progress.

[0022] In this specific embodiment, the movable ball head 44 is hingedly connected to the pulling arm 5, and the pulling arm 5 is vertically connected to the steering knuckle 2. During the extension and shortening operation of the electric push rod 43, the electric push rod 43 is connected to the pulling arm 5 and the steering knuckle 2 through the movable ball head 44. Since the movable ball head 44 has a certain degree of freedom, it can ensure that the steering angle of the wheel 3 can reach more than 45°, thereby improving the flexibility of the entire vehicle.

[0023] In this specific implementation manner, the worm gear reduction mechanism 42 is assembled and installed in the middle position of the steering axle rod 1 through the mounting arm 6, which is easy to install.

[0024] In this specific embodiment, the motor controller 41 is electrically connected to the vehicle VCU and the power-assisted motor 40. When in use, the motor controller 41 interacts with the vehicle VCU to accept steering instructions. After receiving the steering instructions, the power-assisted motor 40 is controlled to work, and the power is transmitted to the internal screw piston rod of the electric push rod 43 through the worm gear reduction mechanism 42 to reduce speed and increase torque. The extension and retraction of the piston rod can drive the steering knuckle 2 to rotate, thereby realizing the steering of the wheel 3.

[0025] The above has described in detail an embodiment of the present utility model, but the above content is only a preferred embodiment of the present utility model and cannot be considered as defining the scope of implementation of the present utility model. All equivalent changes and improvements made in accordance with the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. An electric steering bridge structure for a small sanitation vehicle, comprising a steering bridge rod (1), wherein steering knuckles (2) are respectively arranged at both ends of the steering bridge rod (1), and the steering knuckles (2) are fixedly connected to wheels (3), characterized in that, An electronic power steering gear assembly (4) is fixedly mounted on the steering bridge rod (1), and two ends of the electronic power steering gear assembly (4) are respectively hingedly connected to the steering knuckle (2); The electronic power steering assembly (4) comprises a power motor (40), a motor controller (41) is installed at the top of the power motor (40), a worm gear reduction mechanism (42) is installed at the bottom, both sides of the worm gear reduction mechanism (42) are respectively connected to electric push rods (43), and the end of the electric push rod (43) away from the worm gear reduction mechanism (42) is provided with a movable ball head (44); The movable ball head (44) is hingedly connected to a pull arm (5), and the pull arm (5) is vertically connected to the steering knuckle (2).

2. The electric steering bridge structure for a small sanitation vehicle according to claim 1, characterized in that, The worm gear speed reduction mechanism (42) is assembled and installed at the middle position of the steering bridge rod (1) through a mounting arm (6).

3. The electric steering bridge structure for a small sanitation vehicle according to claim 1, characterized in that, The motor controller (41) is electrically connected to the vehicle VCU and the power-assisting motor (40).

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