Milling machine control system and control method

Abstract

The invention relates to the technical field of engineering machinery, in particular to a milling machine control system and a control method. The control system comprises a vibration signal detectorand a back pressure valve, the vibration signal detector is arranged on a scraper, and the back pressure valve is communicated with a first lift cylinder; a controller can collect the vibration signals detected by the vibration signal detector, and can adjust the back pressure of the back pressure valve according to the collected vibration signals to realize the automatic voltage regulation function; in particular, the logic control can be used to realize the automatic diagnosis, preliminary elimination and alarm functions of the fault in the working condition of the scraper, so that the anti-deformation protection is achieved on the scraper. The control system further comprises a first displacement detector, the controller is capable of converting the displacement A detected by the firstdisplacement detector into the displacement B of a second lift cylinder and controlling a reversing valve of the second lift cylinder to move, so that the second lift cylinder drives the material conveying device to lift or lower the displacement B, and cooperative movement of the second lift cylinder and the first lift cylinder is achieved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a milling machine control system and control method. Background technique [0002] Milling machine is one of the main equipment for asphalt concrete pavement maintenance construction. Because of its advantages of easy control, convenient and flexible operation, good maneuverability, and the direct recycling of old milling materials, it is widely used in urban municipal roads and expressway maintenance operations. project. [0003] The scraper is the key part at the rear of the milling bin, and it plays the role of supporting the feeding device and scraping the material. During operation, the lifting cylinder of the scraper is in a floating state. If the back pressure is too large, the attachment of the scraper to the ground will If the force is small, the cleanliness of the ground after milling will be less ideal; if the back pressure is too small, the adhesion of ...

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Problems solved by technology

[0003] The scraper is the key part at the rear of the milling chamber, and it plays the function of supporting the feeding device and scraping the material. During operation, the lifting cylinder of the scraper is in a floating state. If the back pressure is too large, the attachment of the scraper to the ground will If the force is small, the cleanliness of the ground after milling will be less ideal; if the back pressure is too small, the adhesion of the scraper to the ground will be large, and the ground will be gnawed tightly. In addition, the scraper bears the weight of the conveying device, so It will cause the whole machine to vibrate violently following the scraper

[0004] In addition, under special working conditions such as maintenance, the scraper lifting cylinder needs to lift the scraper together with the feeding device to the maximum limit height along the slideway at the rear of the milling bin. At this time, it is necessary to properly adjust the lifting cylinder of the feeding device , if the lifting cylinder of the scraper is not well matched with the lifting cylinder of the conveying device, it will cause the scraper to get stuck in the slideway, and the blind lifting will also cause the deformation of the scraper, so that the scraper will be jammed due to deformation during subsequent operations A series of problems such as stagnation, unclean scraping, violent shaking of the whole machine and loose sealing

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