A device and method for a lawn mower to adapt to terrain and realize a limit swing angle of 30°

Abstract

The invention relates to a device and method for a lawn mower to adapt to terrain and realize a limit swing angle of 30°, belonging to the field of forage harvesting machinery. The lawn mower includes: a cutter general frame, a lifting hydraulic cylinder, a lifting arm, a rotating arm and a grounding slide , when the lawn mower is working on a rough and undulating ground, since the grounding slide plate is always in contact with the ground, the terrain will cause the lifting hydraulic cylinder to be pressed or pulled, so that the oil in the cylinder cavity of the lifting hydraulic cylinder can flow out to the energy storage The hydraulic device or the oil in the accumulator flows back into the cylinder cavity of the lifting hydraulic cylinder, so that the cutter frame connected with the lifting hydraulic cylinder at the first hinge point rises and falls with the terrain environment, which has the effect of grounding profiling. At the same time, through the precise design of the structure and size of the mechanical arm of the lawnmower, the lawnmower can swing to the left and right by 30° to the limit. Under the joint action of the hydraulic system and the floating adjustment spring, the lawnmower can self-adapt Slopes and other terrain environments have a better profiling effect.

Description

technical field [0001] The invention relates to a device and a method for a lawn mower to adapt to the terrain to achieve a limit swing angle of 30°, belonging to the field of grass harvesting machinery. Background technique [0002] Compared with the planting environment of farmland, the grass of artificial grassland and natural grassland is often planted in mountainous and hilly areas with large undulating ground and many rocks. Therefore, for grass harvesting on mountain and hills, the lawn mower needs to have good terrain adaptation. And the grounding profiling function, at the same time, it should have an angle range of swinging with the terrain to adapt to complex terrain such as slopes, and improve the adaptability of the lawn mower to the terrain. [0003] At present, the terrain adaptive system of lawn mowers in my country all rely on the profiling mechanism, and its actuators are basically springs. Relying on the springs enables the components to move up and down w...

AI Technical Summary

Problems solved by technology

[0003] At present, the terrain adaptive system of lawn mowers in my country relies on profiling mechanisms, and its actuators are basically springs. Relying on springs, the components move up and down with the undulations of the ground, providing more degrees of freedom for high-speed running components, so that they follow the ground surface Flexible angle and position adjustment can be realized under working conditions, so as to achieve the purpose of profiling on the ground. The spring profiling system is simple in structure and low in cost. The shape is unevenly stressed, which affects the profiling effect, and the deformation range of the spring is limited, making it difficult to achieve a large-angle swing range in complex terrain

Relying on the terrain adaptive profiling system of the hydraulic system, the force on the cutter is uniform, and the range of floating and swinging of the cutter is large, which is more suitable for pasture harvesting in hilly and mountainous areas. However, the current research on hydraulic control profiling in my country has not involved, and needs to be further studied. Research

[0004] In addition, there are currently a small number of small-width lawn mowers that can mow grass on slopes, but for large-width (more than 3 meters) lawn mowers, there are no models that can achieve a left and right swing angle of 30°, and none of them have the ability to mow grass on slopes. The ability to mow grass on slopes. In addition, the structure of the large and wide lawn mower mechanical arm is not reasonable enough, and the pulling force provided by the lifting hydraulic cylinder is too large. Whenever the tractor has a long service life, the subsequent output pressure is slightly lower than the rated pressure of 16MPa Therefore, for the mounted lawn mower, a reasonable mechanical arm structure is the key to smooth transportation and adapting to complex terrain.

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