Device and method for realizing limit swinging angle of 30 degrees of mower by self-adaption to terrain

Abstract

The invention relates to a device and method for realizing a limit swinging angle of 30 degrees of a mower by self-adaption to terrain, and belongs to the field of pasture harvesting machine. The mower comprises a cutter main frame, a lifting hydraulic cylinder, a lifting arm, a rotating arm and a grounding sliding plate, when the mower works on the rugged ground, the grounding sliding plate makes contact with the ground all the time, the terrain enables the lifting hydraulic cylinder to be subjected to pressing or pulling acting force, so that oil in a cylinder cavity of the lifting hydraulic cylinder can flow out to an energy accumulator, or oil in the energy accumulator flows back into the cylinder cavity of the lifting hydraulic cylinder, the cutter main frame connected with the lifting hydraulic cylinder at the first hinge point fluctuates up and down along with the terrain environment, and the grounding profiling effect is achieved. Meanwhile, through accurate design of the structure and the size of a mechanical arm of the mower, the mower can swing leftwards and rightwards by 30 degrees to the limit, and under the combined action of a hydraulic system and a floating adjusting spring, the mower can adapt to terrain environments such as slopes and the like, and a better profiling effect is achieved.

Description

technical field [0001] The invention relates to a device and a method for a lawn mower to adapt to terrain and realize a limit swing angle of 30°, belonging to the field of pasture harvesting machinery. Background technique [0002] Compared with the planting environment of farmland, pastures in artificial pastures and natural pastures are often planted in mountainous and hilly areas with large undulating ground and many rocks. Therefore, for pasture harvesting on mountainous and hilly areas, it is necessary for the mower to have good terrain adaptation And ground profiling function, at the same time, it should have an angle range that can swing 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 relies on profiling mechanisms, and its actuators are basically springs. Relying on springs, the components move up and down with the...

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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