Vibrating straw walker separation test stand with adjustable parameters

Abstract

The invention discloses a vibrating straw walker separation test stand with adjustable parameters. The test stand comprises a rack, a vibrating screen installed on the rack in an inclined mode through an oscillating bar mechanism, and a drive device used for driving the vibrating screen to swing in a reciprocating mode. The drive device comprises a crank, a rotating shaft, a connecting rod with the adjustable length, and a rotating drive assembly. The crank is connected with the rotating shaft. The crank is provided with a first connecting mechanism with the installing distance to the rotating center of the crank being adjustable. One end of the connecting rod is hinged to the vibrating screen, and the other end of the connecting rod is hinged to the first connecting mechanism. A feeding device used for conveying materials to the vibrating screen is arranged above the front of the vibrating screen. A receiving hopper is arranged under the vibrating screen. An impurity discharging hopper is arranged below the rear of the vibrating screen. According to the test stand, all the work parameters can be adjusted conveniently and fast without replacing parts, the basis is provided for studying factors influencing the screening efficiency and seeking measures for improving the work efficiency of vibrating straw walker separation, and a vibrating straw walker separation system with the optimized reasonable structure can be designed out conveniently.

Description

technical field [0001] The invention relates to a test platform, in particular to a parameter-adjustable vibration draft-by-draft separation test platform for small rapeseed and rice-wheat threshing machinery at the miscellaneous discharge port. Background technique [0002] Loss rate is one of the important indicators to measure the quality of harvesting operations. Rapeseed, rice and wheat harvest losses include header loss, cleaning loss and entrainment loss, where entrainment loss refers to the grains discharged from the grass outlet along with the stalk. Due to the thinness of the ejected material from the waste discharge port of small threshing machines and the low draft load, the draft separation device on the combine harvester is generally removed, and a grass discharge plate similar to a fan blade is installed at the end of the threshing drum instead. In the threshing chamber, the grains that are not screened out by the concave plate will be wrapped in straw or pod...

AI Technical Summary

Problems solved by technology

Due to the thinness of the ejected material from the waste discharge port of small threshing machines and the low draft load, the draft separation device on the combine harvester is generally removed, and a grass discharge plate similar to a fan blade is installed at the end of the threshing drum instead. In the threshing chamber, the grains that are not screened out from the concave plate will be wrapped in straw or pod shells and will be directly discharged out of the machine with the grass discharge plate, resulting in loss

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