关键词: 履带式, 甘蔗收割机, 坡道行驶稳定性, 极限倾翻角, RecurDyn仿真

Abstract:  In China, the sugarcane planting area is mainly in slowslope and hilly lands. In order to develop the hilly land operation of caterpillar sugarcane harvesters, the running stability of these harvesters on slopes should be analyzed. This study takes twotrack and fourtrack type sugarcane harvesters as research objects, and the limit tilting angle as the evaluation index to theoretically analyze the longitudinal and transverse slope tilt stability of the two harvesters. The simulation software RecurDyn was used to simulate the slope driving stability of the two harvesters. The simulation results showed that the longitudinal upslope limit tilting angles of the twotrack type (horizontal rotation of elevator 0°、+90°) and fourtrack type harvesters were 24.0°, 31.0°, and 35.0°, respectively. The longitudinal downslope limit tilting angles of the twotrack type (horizontal rotation of elevator 0°, +90°) and fourtrack type harvesters were 36.0°, 32.0°, and 27.0°, respectively. The longitudinal upslope driving stability of the twotrack type elevator with a horizontal rotation of +90° was better than that with a horizontal rotation of 0°, and the longitudinal upslope driving stability of the fourtrack type was better than that of the twotrack type. The opposite was true for longitudinal downslope driving stability. The simulation values of the transverse slope limit tilting angle of the twotrack type (horizontal rotation of elevator -90°, 0°, and +90°) and fourtrack type were 21.0°, 18.0°, 12.0°, and 16.0°, respectively. The driving stability was better for the horizontal rotation angle of the twotrack type elevator that was opposite to the transverse slope tilting angle. The transverse slope driving stability of the fourtrack type was better than that of the twotrack type elevator with a horizontal rotation of +90° and worse than that of the twotrack type elevator with a horizontal rotation of -90° and 0°. According to the slope driving stability simulation results of the two harvesters, it can be seen that the stability of the fourtrack type is better than that of the twotrack type, and it is more suitable for driving in hilly and mountainous lands. By simulating the slope driving tests of two sugarcane harvesters, the driving stability of the two machines on the slope is obtained, which provides a reference for the chassis design of sugarcane harvesters.

Key words: tracktype, sugarcane harvester, slope driving stability, limit tilting angle, RecurDyn simulation