Combine harvester cleaning sieve inclination angle automatically regulating device

Abstract

The invention relates to a combine harvester cleaning sieve inclination angle automatically regulating device. The combine harvester cleaning sieve inclination angle automatically regulating device comprises a linear sliding table, a servo motor cleaning sieve, an inclination angle sensor device, a control system and the like, wherein the inclination angle sensor is installed at the tail part of the cleaning sieve, the linear sliding table is arranged in the vertical direction, a roller guide rail plate is installed at a working slide block of the linear sliding table, under the drive of a servo motor, the working slide block is driven to conduct motion, the roller guide rail is further driven to conduct motion, and thus the purpose that the inclination angle of the cleaning sieve can be adjusted is achieved. According to the combine harvester cleaning sieve inclination angle automatically regulating device, under the joint action of the inclination angle sensor, the control system, and the linear sliding table, real-time regulation of the inclination angle of the cleaning sieve can be achieved, the cleaning sieve can be adapted to harvesting conditions in croplands especially in hill zones in which terrains fluctuate up and down, and the cleaning sieve can be adapted to regulation of differences in respective optimum inclination angles of various crops. The normal work of the cleaning sieve surface can be guaranteed; the combine harvester cleaning sieve inclination angle automatically regulating device is beneficial to increasing of cleaning efficiency and complete machine efficiency; the combine harvester cleaning sieve inclination angle automatically regulating device has a wide theorectical significance and application prospect.

Description

technical field [0001] The invention belongs to the field of intelligent control of combine harvesters, and in particular relates to an automatic adjustment device for the inclination angle of a cleaning screen of a combine harvester. Background technique [0002] In the process of mechanical harvesting in the field, the harvesting situation is complicated; factors that may change at any time, such as field terrain and crop conditions, put forward higher requirements for the adaptability of the harvesting and cleaning device. The specific problem is that when crops are harvested uphill, materials may be thrown backward on the cleaning sieve, and when harvesting downhill, materials may be tilted forward on the cleaning sieve, resulting in cleaning losses. At the same time, when the combine harvester harvests different varieties of crops, the inclination angle of the screen surface must be adjustable, so that it has wide adaptability. On the international advanced combine har...

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Problems solved by technology

In the field of oil field drilling equipment, the Chinese patent CN202877111 U solves the influence of the unevenness of the screen surface on the inclination angle of the screen surface. By adjusting the nut on the rotating screw rod, the diamond-shaped four-bar mechanism is used to adjust the inclination angle. The diamond-shaped four-bar mechanism is used as a supporting device. It is used in drilling equipment, which requires high strength, and the stability of the four-bar mechanism is not good, and the rotating screw rod is manually adjusted.

Chinese patent CN 102877112 U adopts the combination of motor and hydraulic system to overcome the shortcomings of manual adjustment, but the mechanism of the device is complex, the hydraulic pump and hydraulic cylinder have high requirements for sealing, and the cost is high; and it cannot be adjusted in real time according to the working conditions

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