Active carry scraper and frame lifting control device thereof

Abstract

The invention relates to the field of machinery, and in particular relates to a frame lifting control device of an active carry scraper. The active carry scraper comprises a hydraulic pump, a left pitching oil cylinder and a right pitching oil cylinder, wherein the left end and the lower end of the left pitching oil cylinder are respectively hinged with a frame and a left driving gear; and the upper end and the lower end of the right pitching oil cylinder are respectively hinged with the frame and a right driving gear. The frame lifting control device comprises a left position sensor, a rightposition sensor, a controller, an operating handle and an electronic-control hydraulic control valve, wherein the left position sensor is used for measuring the position of the left pitching oil cylinder; the right position sensor is used for measuring the position of the right pitching oil cylinder; the electronic-control hydraulic control valve is connected onto an oil line among the hydraulic pump, the left pitching oil cylinder and the right pitching oil cylinder; the input end of the controller is connected with the left position sensor and the right position sensor; the output end of the controller is connected with the control end of the electronic-control hydraulic control valve; and the controller outputs a control signal to the electronic-control hydraulic control valve. Becausethe left position sensor, the right position sensor and the controller carry out real-time measuring control, the frame is precisely controlled to lift.

Description

technical field [0001] The invention relates to the mechanical field, and more specifically, relates to a frame lifting control device of an active scraper. In addition, the present invention also relates to an active scraper comprising the above-mentioned active scraper frame lifting control device. Background technique [0002] With the rapid development of my country's economic construction, there are more and more types of construction machinery used in the field of infrastructure construction, including active scrapers with predetermined power sources. Active scrapers are a kind of excavation, soil transportation, Construction machinery that integrates multiple functions such as soil unloading and bulldozing. This kind of active scraper includes a left travel device, a right travel device, a scraper bucket and a vehicle frame. Usually, those skilled in the art will set the left travel device and the right travel device as crawler belts to adapt to harsh environments. C...

AI Technical Summary

Problems solved by technology

[0003] In order to drive the vehicle frame to rotate upwards or downwards relative to the left traveling device and the right traveling device, the active scraper includes a left pitching oil cylinder, a right pitching oil cylinder, a hydraulic pump and a hydraulic pump connected in series with the left pitching oil cylinder, the right pitching The hydraulic control valve on the oil circuit between the pitching cylinders, the upper and lower ends of the left pitching cylinder are respectively hinged with the frame and the left traveling device, the upper and lower ends of the right pitching cylinder are respectively hinged with the frame and the right traveling device, provided by the hydraulic pump The pressure oil, the left pitch cylinder and the right pitch cylinder both provide driving force for the frame to rotate relative to the left traveling device and the right traveling device, that is to say, provide driving force for the rotation of the scraper bucket fixed to the frame, and In the prior art, the hydraulic pump provides pressure oil, and the hydraulic control valve controls the flow direction of the pressure oil in the hydraulic system, and then controls the expansion and contraction of the left and right pitch cylinders. Since the hydraulic control valve needs to be opened or closed manually, it is often not accurate. 1. Timely control the flow direction of the pressure oil in the hydraulic system, so that it is impossible to accurately and timely control the lifting of the active scraper frame, it is not easy to grasp the thickness of the cut earth, and it is easy to make the active scraper frame upward or downward The lower rotation angle exceeds the allowable range, resulting in a collision between the frame and the left and right travel devices, or a collision between the frame and the ground, which shortens the life of the active scraper

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