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Four-wheel independent drive wheel carrier posture-adjustable vehicle steering performance improving device and method

A four-wheel independent drive and steering performance technology, which is applied in power units, electrical devices, control drives, etc., can solve the problems of slow in-situ steering speed, influence of wheelbase adjustment, and complex structure.

Active Publication Date: 2021-04-09
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology uses the suspension to adjust the wheelbase, the adjustment speed is slow and the wheelbase adjustment range is small, the wheelbase adjustment speed is slow, and the in-situ steering speed is slow; the existing technology uses mechanical mechanisms to cooperate with hydraulic transmission to adjust the wheelbase, or Use the clutch to adjust the distribution of power, and the complex structure of the wheelbase adjustment slowly affects the speed and controllability of the spot steering

Method used

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  • Four-wheel independent drive wheel carrier posture-adjustable vehicle steering performance improving device and method
  • Four-wheel independent drive wheel carrier posture-adjustable vehicle steering performance improving device and method
  • Four-wheel independent drive wheel carrier posture-adjustable vehicle steering performance improving device and method

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Effect test

Embodiment 1

[0052] An embodiment of the present invention provides a steering performance improvement device for a four-wheel independently driven wheel frame with an attitude-adjustable vehicle, including:

[0053] Four wheel frames 10;

[0054] controller;

[0055] The four wheel frame driving mechanisms are connected to the controller, and each wheel frame driving mechanism is respectively connected to the corresponding wheel frame to control the pose of the corresponding wheel frame;

[0056] Four sets of wheel units, each set of wheel units includes at least two wheels 11, each wheel 11 is set on the same side of the corresponding wheel frame, and the pose is controlled by the corresponding wheel frame;

[0057] Four groups of walking drive units are connected to the controller, and each group of walking driving units is connected to the corresponding wheel unit respectively, and the running state of each wheel 11 in the corresponding wheel unit is controlled to be a walking state, ...

Embodiment 2

[0073] An embodiment of the present invention provides a method for improving the steering performance of a vehicle based on any one of the four-wheel independent drive frame adjustable attitude vehicle described in Embodiment 1, which is characterized in that it includes the following steps:

[0074] Utilize each wheel frame drive mechanism to control the pose of the corresponding wheel frame, and then change the pose of the wheel 11 connected to the wheel frame;

[0075] Utilize each walking driving unit to control the running state of each wheel 11 in the corresponding wheel unit to be walking state, steering state or stop state, so as to realize the improvement of the steering performance of the four-wheel independently driven wheel frame with adjustable attitude.

[0076] In a specific implementation manner of the embodiment of the present invention, the method further includes: the overturning speed of the wheel frame meets the requirement for steering at low speed. When...

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Abstract

The invention discloses a four-wheel independent drive wheel carrier posture-adjustable vehicle steering performance improving device and method. The device comprises four wheel carriers, a controller, four wheel carrier driving mechanisms, four groups of wheel units, four groups of walking driving units; the four wheel carrier driving mechanisms are connected with the controller, and each wheel carrier driving mechanism is connected with the corresponding wheel carrier to control the posture of the corresponding wheel carrier; each group of wheel unit comprises at least two wheels, all the wheels are arranged on the same sides of the corresponding wheel carriers, and the pose of each wheel is controlled by the corresponding wheel carrier; and the four groups of walking driving units are connected with the controller, each group of walking driving unit is connected with the corresponding wheel unit, and the running state of each wheel in the corresponding wheel unit is controlled to be a walking state, a steering state or a stopping state. According to the invention, the landing steering of four wheels on the inner side of the whole vehicle can be realized, the steering resistance distance can be reduced, the rapidity of pivot steering is further realized, and the steering time is prolonged.

Description

technical field [0001] The invention belongs to the field of multi-wheel independent drive, in particular to a device and method for improving steering performance of a four-wheel independent drive wheel frame with adjustable attitude vehicle. Background technique [0002] Multi-wheel independently driven vehicles have the characteristics of maneuverability, flexibility, quick response, high reliability, and easy realization of complex driving force control. Each wheel of the multi-wheel independent drive electric vehicle is equipped with a drive motor, which can still realize center steering after canceling the steering mechanism. When one or several drive motors are damaged, the vehicle can still run normally under a reasonable control strategy, and the damaged drive motors can be replaced at a convenient time, which improves the redundancy and reliability of the drive system. [0003] The multi-wheel independent drive is suitable for the passability requirements on compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K7/00B60L15/20B60L15/32B60K17/04
CPCB60K7/0007B60L15/20B60L15/32B60K17/043B60L2260/28B60L2220/44Y02T10/72
Inventor 李勇杜万亮吴昊洋
Owner XCMG CONSTR MACHINERY
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