Experimental Study On Track Device Circling Driving Wheel For Two-Axle Wheel Vehicle

The passing topography capacity of the general wheel vehicles on soft soil usually can't meet users'request. Hence, the improvement of passing topography capacity of the military general wheel vehicles on soft soil is very important for the improvement of the army's supporting capacity. Based on The Study of Track Device Circling Driving Wheel for Wheel Vehicle Project that is presided by Ministry of Military Traffic Transportation, General Logistics Department, the track device circling driving wheel was designed, the sinkage and driving force of the track device circling driving wheel were studied.To improve the passing topography capacity of the wheel vehicles on soft soil, track device circling driving wheel for wheel vehicle was designed and verified. For the convenience of conveying and installing track device circling driving wheel, blocking designing idea was adopted, and the special installing tools and fast linking unit were designed. Because the turning characteristic of the wheel vehicles with track device circling driving wheel is similar to that of the track, guiding baffle-trays for the successfully turning of the track device circling driving wheel were designed. The pressure-sinkage relationship proposed by Bekker does not taking the repeatedly passing topography capacity of soil into account. For the two axes wheel vehicle the track device circling driving wheel would run on the track formed by the front wheel, whose forming mechanism and characteristic were analyzed in the paper.The pressure-sinkage relationship proposed by Bekker couldn't directly use to calculate the sinkage of the track device circling driving wheel. According to the testing sinkage data, by using the data fit method, the pressure-sinkage relationship proposed by Bekker was amended. The correctness of the amended relationship was validated through using the testing data.According to the driving characteristic of track device circling driving wheel, The conception of the compound slip was proposed, and the compound slip of the track device circling driving wheel and the driving force was deduced when the slip was small. In the light of loading plan, the testing data of driving force-slip was got. By analyzing the testing data, it was discovered that the driving force of the track device was hardly affected by the front-wheel load. Hence, when calculating the driving force of track device, the influence of the track caused by the front wheel can be ignored. According to the testing driving force data, by using the data fit method, the driving force-slip relationship proposed by Bekker was amended, and the correctness of the amended relationship was validated through using the testing data too.The drawbar pull testing result on village road shows that tested vehicle with track device circling driving wheel could get more drawbar pull in comparison with tested vehicle without track device circling driving wheel with the increasing slip. The comparing testing result of the passing topography capacity on soft soil shows that the passing topography capacity of the tested vehicle with track device obviously excelled that of the tested vehicle without track device.