Multipurpose unmanned vehicle chassis modular steering system

A steering system and unmanned vehicle technology, which is applied in the field of multi-purpose unmanned vehicle chassis modular steering system, can solve the difficulty in meeting the requirements of unmanned vehicle steering accuracy and reliability, the steering response is not fast enough, and the unfavorable modular design and other problems, to achieve the effects of simplified development and debugging, good handling stability, and stable front wheel alignment parameters

Inactive Publication Date: 2021-02-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This arrangement has a long transmission chain and a large transmission gap, which leads to a large difference between the feedback rotation angle and the actual rotation angle, and the steering response is not fast enough. It is difficult to meet the requirements of unmanned vehicles for steering accuracy and reliability, and it is not conducive to modular design.

Method used

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  • Multipurpose unmanned vehicle chassis modular steering system
  • Multipurpose unmanned vehicle chassis modular steering system
  • Multipurpose unmanned vehicle chassis modular steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a modular steering system assembly, which is specifically designed according to the technical characteristics of the unmanned vehicle steering system and the modular technical requirements of the steering system. Compared with the steering system of passenger cars, the steering system of unmanned vehicles omits the steering control device, such as steering wheel, steering column tube and other components, and the steering system is directly driven by the motor; the modular design of the steering system requires all the mechanical parts of the steering system Components and electrical circuits are integrated in the front axle module; at the same time, the multi-purpose chassis requires that the components in the front axle module can be easily replaced according to different bodywork.

[0040] Such as figure 2 As shown, the modular steering system assembly includes: steering gear housing 11, dust cover 12, steering tie rod inner ball joint 13, s...

Embodiment 2

[0043] On the basis of the above-mentioned embodiment 1, the wheel assemblies on both sides are added. Such as image 3 Shown is a schematic diagram of the connection between the modular steering system and the wheel assembly. Wherein it comprises: steering knuckle 19, tire 31, wheel hub 32, hub axle 37, wheel hub and hub axle connecting bolt 33, wheel hub and brake assembly connecting bolt 34, wheel hub bearing 36. The tie rod controls the deflection of the steering wheel through the steering knuckle 19 .

[0044]The steering knuckle 19 is an important node part of the front axle, and it is connected with the tie rod inner ball joint 13, the tie rod outer ball joint 14, the brake assembly 35, the wheel assembly 3, and the suspension assembly 2 at the same time. In addition, the knuckle, along with the wheel and suspension components, transfers loads in all directions between the ground and the frame. The steering knuckle needs to be designed according to the form of the su...

Embodiment 3

[0049] Such as Figure 4 As shown, on the basis of Embodiment 1 and Embodiment 2, a sub-frame 4 and a suspension assembly 2 are added to form a modular front axle assembly. The suspension adopts unequal length double wishbone independent suspension. In the suspension assembly, the upper control arm lug 21 provides a hinge point for the upper control arm 22, and is welded or bolted to the two sides of the upper longitudinal beam of the subframe 4; the other end of the upper control arm 22 is also connected to the lug. Hinged, and fixed on the upper end of the steering knuckle 19 by bolts. The lower control arm lug 25 is fixed on the subframe lower longitudinal beam, and the lower control arm 23 connects it with the steering knuckle 19 . In addition, the shock absorber 24 is installed on the lower control arm, and the other end will be hinged on the main frame of the chassis to ease and attenuate the impact and vibration from the road surface. Among them, the upper and lower ...

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PUM

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Abstract

The invention provides a multipurpose unmanned vehicle chassis modular steering system, and relates to the field of unmanned vehicles. By dividing the chassis into three parts: a front axle module, arear axle module and an intermediate equipment cabin, the development flexibility of the unmanned vehicle chassis is higher, universalization, modularization and platformization of the unmanned vehicle chassis are achieved, and the unmanned vehicle chassis can meet the differentiated requirements of different uploads for chassis performance. The front axle module comprises a modular steering system assembly, a suspension assembly, a wheel assembly, an auxiliary frame and other connecting pieces. The modular steering system comprises a steering gear assembly, a coupler, a speed reducing mechanism and a steering driving motor. Mechanical and electrical parts of the whole module are highly integrated and packaged, the structure is compact, and plug and play can be realized. All components involved have mature products or are easy to process and manufacture, so that the invention has good implementability.

Description

technical field [0001] The invention relates to the technical field of unmanned vehicles, in particular to a multi-purpose unmanned vehicle chassis modular steering system. Background technique [0002] With the development of autonomous driving technology, the demand for small unmanned vehicle platforms in various application scenarios is increasing day by day. The smart car platform integrates various key technologies such as environmental perception, path planning, behavior decision-making and wire-controlled chassis. Perceive the surrounding environment through a variety of sensors, and control the driving state of the vehicle through the terminal equipped with intelligent algorithms with the sensed information, which has a wide range of applications in travel, logistics distribution, cleaning, inspection, reconnaissance and other fields. Especially during the epidemic period, the unmanned disinfection vehicles, cleaning vehicles and distribution vehicles operating in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/12B60G3/20B60G13/00B62D5/04B62D6/00B62D113/00
CPCB60G3/20B60G13/003B62D3/12B62D5/0421B62D6/001
Inventor 高镇海张汉英高菲胡宏宇王雨蒙
Owner JILIN UNIV
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