trencher

Abstract

The invention relates to a ditching machine, which comprises a cutter assembly. The cutter assembly comprises a blade and a cutterhead seat for fixing the blade. A driving mechanism which is connected to the cutterhead seat drives the cutterhead seat to rotate. The cutterhead seat is rotatably and fixedly connected onto a support of the cutter assembly. An up-down regulating mechanism is arranged between the support of the cutter assembly and a tractor. The up-down regulating mechanism is used for regulating the blade of the cutter assembly to be contacted with or separated from the ground. The support of the cutter assembly is hinged to the tail end of the tractor and the articulated shaft is horizontally arranged. The cutter assembly and the tractor are connected through a belt. The support of the cutter assembly is provided with a tensioning roll which is abutted against the belt. Roll core of the tensioning roll is parallel to the articulated shaft of the cutter assembly support. when the up-down regulating mechanism is used for regulating height of the cutter assembly, the cutter assembly rotates around the articulated shaft of the cutter assembly support, and the roll body of the tensioning roll is always abutted against the surface of the belt. Therefore, tensioning firmness degree of the belt between the cutter assembly and the tractor is ensured so as to further avoid loosening and sliding of the belt.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a ditching machine for ditching farmland. Background technique [0002] The trencher can be used to excavate narrow and deep underground trenches in construction projects to bury underground drainage pipes, or for railways, post and telecommunications, urban construction and other departments to bury cables and pipelines, etc. It can also be used for orchards, vegetable gardens and other farmland environments. Fertilization, drainage, irrigation. [0003] Existing small-sized ditching machines for farmland ditching are mostly installed on walking tractors. The patent titled "Rear left left ditching machine" (patent number: 201310743234.0) discloses a rear left left ditching machine structure. The L-shaped frame is equipped with a gearbox, and the output spline shaft of the gearbox is driven by the power mechanism of the tractor to rotate. The roller cutter head i...

AI Technical Summary

Problems solved by technology

The patent titled "Rear left left ditching machine" (patent number: 201310743234.0) discloses a rear left left ditching machine structure. The L-shaped frame is equipped with a gearbox, and the output spline shaft of the gearbox is driven by the power mechanism of the tractor to rotate. The roller cutter head is set on the spline shaft, and multiple blades are equally distributed on the rotating roller cutter. On the outer periphery of the disc, the operator drives a walking tractor to carry out the ditching operation on the farmland. The operator needs to hold the walking tractor so that the blades on the drum cutter head are pressed against the soil of the farmland and cut into the soil to carry out the operation of turning the soil and ditching. When the above-mentioned ditching machine implements the operation of turning the soil, due to the different pressing force of the handle of the operator driving the walking tractor, the depth of the ditch is sometimes shallow and sometimes deep, and when walking on the ground that does not need to be ditched , For example, at the turning position of the field, either the L-shaped frame loaded with blades needs to be disassembled from the walking tractor, or the walking tractor is lifted to separate the blades from the ground. When using a side trencher, it is necessary to take into account both the operation of the walking tractor and the contact between the blade of the trencher and the ground, which is particularly laborious and difficult to control during the actual trenching operation

[0004] In order to solve the above technical problems, another ditching machine structure is disclosed in the patent titled "Ditching Machine" (Patent No.: 201510617483.4). One end of the tool assembly bracket, the other end of the tool assembly bracket is connected to the walking tractor, and an up and down adjustment mechanism is set between the tractor and the tool assembly bracket. Consistency in depth reduces the labor intensity of the operator. The input shaft of the gearbox of the tool holder assembly of the above-mentioned ditching machine is provided with a second pulley and is connected with the gearbox pulley of the walking tractor through a belt. When the up and down adjustment mechanism In the process of adjusting the up and down movement of the tool rest assembly, when the adjustment range is too large, the belt between the pulley on the gearbox of the tool rest assembly and the pulley of the gearbox of the walking tractor is easy to loosen, which will cause the belt to loosen. The phenomenon of slipping not only hinders the rotation of the tool holder assembly, but also reduces the service life of the belt

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