Track vehicles self-extrication mechanism

International Conference of Young Scientists and Students "Topical Problems of Mechanical Engineering 2018"

Belov, N.V.^1 ; Kiper, D.S.^1 ; Chabunin, I.S.^1

Moscow Higher All-Arms Command School, Golovacheva street 21, Moscow

09380, Russia^1

关键词: Equivalent stress distribution;    Fixed bearings;    Fixed block;    Heavy vehicle;    Labor intensity;    Track vehicles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/489/1/012012/pdf
DOI  :  10.1088/1757-899X/489/1/012012

来源: IOP

【 摘 要 】

The analysis of extrication of stuck track vehicles methods available led to the conclusion that in case of light or moderate sticking it is justified to employ the self-extrication method using the drive wheels of the vehicle as winch heads. However, it is seldom resorted to taking into account high labor intensity and complexity of the efforts necessary to accomplish it. To exclude this drawback the authors propose a structure containing a drum with a wire wound on it that is attached to the drive wheel externally. To increase the efficiency rate and to reduce the load on the wire and the head with the wheel a fixed block is used. Essentially, this results in a winch with a tackle system whose ratio is 2. For self-extrication it is necessary to mount the mechanism on the drive wheels of the track vehicle (without removing the tracks), to fasten the blocks on fixed bearing(s), such as a stump, a tree or an anchor log, located at a distance from the vehicle, to pass the wire from the head through the block and to fasten it on the vehicle's towing shackle. The authors use the example of a 14-ton heavy vehicle to determine the main geometrical parameters of the mechanism and provide the fields of equivalent stress distribution calculated using the finite element method.