关键词: 残膜回收, 捡拾装置, 凸轮导轨盘, 弹齿轴总成, 正交试验

Abstract: Aiming at the problems of poor reliability, low film pickup rate and high wrapping rate of the traditional telescopic pole tine type film pickup device, a guided telescopic film pickup device was designed based on the centered directaction roller cam. The key components of the pickup device were designed according to the working requirements of film picking, and the main structural parameters of the cam guide disc, pickup drum and spring tooth shaft assembly in the film pickup device were determined. In order to verify the operational performance of the pickup device, orthogonal tests were conducted with the machine advancing velocity, the speed of the film pickup roller, and the depth of the teeth into the soil as the test factors, and the film pickup rate and film wrapping rate as the test indexes. The test results showed that the primary and secondary factors affecting the film pickup rate and wrapping rates were the speed of the film pickup roller, the depth of the bullet teeth into the soil and the machine advancing velocity. The optimal operating parameters were the speed of the film pickup roller by 55 r/min, the depth of the bullet teeth into the soil by 40 mm and the machine advancing velocity by 4 km/h. The results showed that the film pickup rate was 88.87% and the film wrapping rate was 1.51%, which satisfied the requirements of the residual film recovery operation. The research results can provide reference for the structural design and optimization of the guided telescopic film pickup device.

Key words: residual film recovery, pickup device, cam guide discs, spring tooth shaft assembly, orthogonal test