A device and method for driving a tracked vehicle to turn

A vehicle and crawler technology, applied in non-deflectable wheel steering, vehicle components, steering mechanisms, etc., can solve the problems of stepless steering difficulty, insufficient steering power, and large motor torque requirements, and achieve high-speed steering performance. The effect of slowing down and improving output performance

Active Publication Date: 2020-06-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure does not consider the situation of low speed, small radius and large resistance steering, the coupling performance is not high, and the advantages of the planetary coupling system are not fully utilized
4) The dual-motor independent drive and the single-steering motor configuration are used to solve the problem of insufficient steering power, but the torque output capability of this structure is limited when the vehicle is running at low speed, and it is difficult to balance the power of direct driving and steering Utilization
It can be seen that the existing electromechanical coupling device still has the problem of large motor torque demand when the dual-motor drive tracked vehicle turns at low speed and small radius, and excessive power demand of one-side motor when high-speed and large-radius steering. Difficulty in stepless vehicle steering and complex coordination control

Method used

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  • A device and method for driving a tracked vehicle to turn
  • A device and method for driving a tracked vehicle to turn
  • A device and method for driving a tracked vehicle to turn

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Experimental program
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Effect test

Embodiment 1

[0034] figure 1 It is a structural schematic diagram of a device for driving a tracked vehicle to steer according to an embodiment of the present invention.

[0035] see figure 1, the device that is used to drive the steering of crawler vehicle of embodiment, comprises: two driving motors 3a and 3b (the left side is driving motor 3a, the right side is driving motor 3b), two planetary coupling devices 2a and 2b (left side is The planetary coupling device 2a, the right side is the planetary coupling device 2b) and a steering motor 4; the output shaft of the driving motor 3a is connected with the drive wheel 1a on the left side of the tracked vehicle through the planetary coupling device 2a, and the output shaft of the driving motor 3b is connected through the planetary coupling The device 2b is connected with the driving wheel 1b on the right side of the tracked vehicle; the output shaft of the steering motor 4 is connected with the planetary coupling device 2a and the planetar...

Embodiment 2

[0053] The present invention also provides a method for driving a tracked vehicle to turn, which is applied to the above-mentioned device for driving a tracked vehicle to turn.

[0054] The method for driving a tracked vehicle to turn includes:

[0055] When the tracked vehicle is running straight or when the turning radius of the tracked vehicle is not less than the first preset threshold and not greater than the second preset threshold (normal steering), the device for driving the tracked vehicle to turn is in the straight driving mode, at this time, control the ring gear brake 17 to brake, control the external electromagnetic clutch to disconnect the output shaft 15 of the steering motor 4 from the first steering motor shaft gear 11a, and control the internal electromagnetic clutch to disconnect the output shaft 15 of the steering motor 4 The connection between the shaft 15 and the second steering motor shaft gear 14a is disconnected, and the steering motor 4 stops driving;...

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Abstract

The invention discloses an apparatus and method for driving a steering of a tracked vehicle. The device comprises two driving motors, two planetary coupling devices and one steering motor. The outputshaft of each drive motor is connected with the driving wheel on the corresponding side of the tracked vehicle through a planetary coupling device. The output shaft of the steering motor is respectively connected with each planetary coupling device, and the output shaft of the steering motor is respectively connected with the driving wheels on both sides of the tracked vehicle through two planetary coupling devices; the planetary coupling device includes a first steering motor shaft gear, a second steering motor shaft gear, a drive motor gear, an outer electromagnetic clutch, an inner electromagnetic clutch, and a planetary gear train. The invention can realize the switching of several coupling modes, can ensure that the power of the driving motor is fully utilized, can improve the outputperformance of the torque and the power of the vehicle, and can realize the stepless steering of the vehicle.

Description

technical field [0001] The invention relates to the technical field of electromechanical coupling, in particular to a device and method for driving a tracked vehicle to turn. Background technique [0002] Tracked vehicles are widely used in many fields such as military affairs, agriculture, construction industry, mining industry, disaster relief and so on. With the development of the times and technological progress, electric drive technology has also become an important development direction of tracked vehicle drive systems. The dual-motor independent drive structure is the most widely used drive form in electric drive crawler vehicles. This type of driving form is simple and flexible in arrangement, and it is convenient to realize differential steering. However, when turning at low speed and small radius, the vehicle is subjected to a large steering resistance torque, which requires a very high torque for the drive motor. If the torque provided by the motor is insuffici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D11/00
CPCB62D11/00
Inventor 翟丽黄鸿
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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