Hedgerow trimming cutter overload protection device

Abstract

The invention discloses a hedgerow trimming cutter overload protection device. The hedgerow trimming cutter overload protection device comprises a cutter rest, a hinge rod and a pre-tensioning rod assembly, wherein a trimming cutter is mounted on the cutter rest; the rear end of the hinge rod is fixedly connected with the right end of the cutter rest and extends towards the front portion of the cutter rest, and the front end of the hinge rod is hinged to the left end of a base provided with a support through a first rotating shaft; the pre-tensioning rod assembly is provided with a pressure spring, one end of the pre-tensioning rod assembly is hinged to the front end of the hinge rod through a second rotating shaft, and the other end of the pre-tensioning rod assembly is hinged to the right end of the base through a third rotating shaft. The hedgerow trimming cutter overload protection device is also provided with an obstacle avoidance device which not only can provide overload protection for the cutter but also can prevent the cutter from colliding with an obstacle, and is simple in structure and high in safety.

Description

technical field [0001] The invention relates to the field of hedge trimming knives, in particular to an overload protection device for hedge trimming knives. Background technique [0002] With the continuous improvement of people's requirements for quality of life, people's demand for living environment and urban greening construction is also increasing. The green area of ​​living areas, leisure areas and roadsides is also increasing. The green belt is mainly suitable for both sides of roads and expressways. The trimming of hedges is far away and the workload is heavy. Therefore, vehicle-mounted hedge trimmers are often used for hedge trimming, which has high work efficiency and good trimming quality, but vehicle-mounted hedge trimmers are relatively Due to the poor flexibility of manual pruning, for some obstacles such as utility poles or light poles located in the hedge, the avoidance mainly depends on the driver's observation to avoid them in advance. When some obstacles ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's requirements for quality of life, people's demand for living environment and urban greening construction is also increasing. The green area of ​​living areas, leisure areas and roadsides is also increasing. The green belt is mainly suitable for both sides of roads and expressways. The trimming of hedges is far away and the workload is heavy. Therefore, vehicle-mounted hedge trimmers are often used for hedge trimming, which has high work efficiency and good trimming quality, but vehicle-mounted hedge trimmers are relatively Due to the poor flexibility of manual pruning, for some obstacles such as utility poles or light poles located in the hedge, the avoidance mainly depends on the driver's observation to avoid them in advance. When some obstacles cannot be observed or the driver is negligent, it may It may cause the pruning tool to directly hit the obstacle, causing equipment damage or safety accidents; and because the density of the hedge belt is different, the force of the pruning knife is also different. Excessive reaction force will be formed when the place is in place, resulting in overload and easy to damage the tool

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