Knife grinder for hay cutter

Abstract

The invention relates to a knife grinder for a hay cutter, and belongs to the field of agricultural production. A polishing device is arranged at the top end of a first support; a pressure sensor is arranged on a second support; a first hydraulic cylinder is arranged on the pressure sensor; a controller is arranged on a working table; a first ultrasonic sensor is arranged on a third support; a limiting device is arranged on a fifth support; a limiting plate is arranged on a fourth support; a second ultrasonic sensor is arranged on a sixth support; and a rubber pad is arranged on a main shaft of the first hydraulic cylinder. According to the knife grinder for the hay cutter provided by the invention, a blade is pressed on the limiting plate through the first hydraulic cylinder, a position of the blade is detected through the three ultrasonic sensors, a grinding wheel clings to a knife edge through the second hydraulic cylinder, and the knife edge is polished through reciprocating movement of the rotating grinding wheel by repetitive co-rotation and reverse rotation of a first electromotor, so that a manual knife edge polishing process is replaced, the polishing quality and the polishing efficiency are improved, and the safety of workers is ensured.

Description

technical field [0001] The invention relates to a sharpening device for a hay cutter, in particular to a device that detects the position of a blade fixed on a limit plate through an ultrasonic sensor, and attaches the grinding wheel to the blade through a second hydraulic cylinder. The utility model relates to a device in which a first electric motor rotates forward and reversely to drive a grinding wheel to move back and forth on a blade to grind the blade, and belongs to the field of agricultural production. Background technique [0002] Hay cutters are mainly used for cutting crop straws and pastures, etc., and are widely used in agricultural production. Because most of the chopped plants are relatively hard and thick plants, the degree of damage to the blade is relatively large, and often needs to be polished. blade. [0003] The traditional way of grinding blades is mostly manual grinding, which consumes a lot of working time. Moreover, the blades of the chaff cutter ...

AI Technical Summary

Problems solved by technology

[0003] The traditional way of grinding blades is mostly manual grinding, which consumes a lot of working time. Moreover, the blades of the chaff cutter are large in size, so manual grinding is very inconvenient, and the grinding accuracy is not high. It takes a long time to grind each blade, which is time-consuming and laborious. , reducing work efficiency

There are also people who use hand-held grinders to sharpen their knives. The blades are not smooth. During the grinding process, workers often use too much force to damage the blades, and the flying sparks and iron filings can easily cause safety accidents.

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