Tensioning mechanism and rotary cultivator

Abstract

The invention discloses a tensioning mechanism and a rotary cultivator. The tensioning mechanism comprises a support, an operation rod, a pull rod, a swing arm, a first rotation arm and a second rotation arm, the support is fixed to a bottom rack, and two ends of the swing arm are connected with a second tensioning wheel and the bottom rack respectively; the first rotation arm is connected with the second rotation arm through a rotation shaft, the first rotation arm is connected with the operation rod, and two ends of the pull rod are connected with the second rotation arm and the swing arm respectively; the operation rod drives the second rotation arm to rotate through the first rotation arm, and the second rotation arm drives the second tensioning wheel to up and down swing through the pull rod and the swing arm. The tensioning mechanism is ingenious in structure and convenient to operate, saves labor, and generates little vibration. In the process of power separation and joining between an engine and a second transmission mechanism, the tensioning mechanism is stable and reliable.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a tensioning mechanism and a rotary tiller. Background technique [0002] Rotary tiller is a kind of soil tillage machine driven by power. It has strong ability to cut soil and crush soil. It can achieve the effect of plowing and raking several times in one operation. With the continuous improvement of the level of agricultural science and technology, it has become a common method to complete the rotary tillage of farmland soil by rotary tiller. As we all know, the operating principle of the rotary tiller is to use the rotary tiller shaft to loosen and mash the mud (or clods) to achieve the purpose of tillage. The rotation direction of the existing rotary tiller shaft is a single rotary motion, which cannot be realized in positive and negative directions. to rotate. Also can only realize the one-way chain tensioning in the transmission box that drives rotary tiller shaft t...

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Problems solved by technology

[0006] In view of this, in order to engage and separate the power of the second transmission mechanism, make the operation convenient and labor-saving, and solve the problems of remote operation, etc., the present invention proposes a tensioning mechanism, including a bracket, an operating rod, a pull rod, a swing arm, a first rotating arm, the second pivoting arm, the bracket is fixed on the chassis, the two ends of the swinging arm are respectively connected with the second tensioning wheel and the chassis, the first pivoting arm and the second pivoting arm are connected by a rotating shaft, the first pivoting arm is connected with the operating rod Connection, the two ends of the pull rod are respectively connected with the second swing arm and the swing arm; the operating lever drives the second swing arm to rotate through the first swing arm, and the second swing arm drives the second tension wheel to swing up and down through the pull rod and swing arm

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