Device and method for detecting action of knotter and tension variation of baling rope synchronously

Abstract

The invention relates to a device and a method for detecting actions of a knotter and tension variations of a baling rope synchronously. The device comprises the knotter, wherein the knotter is placed on one side of a bale, a tension sensor is installed between the knotter and the bale, and the tension sensor transmits acquired tension information of the baling rope to a PC through a synchronous circuit board; a No.1 high-speed video camera is arranged near a viewing port of the knotter, and a No.2 high-speed video camera is arranged at the rear end of the knotter and close to one side of a transmission box; the No.1 high-speed video camera and the No.2 high-speed video camera are arranged on the periphery of the knotter at 90 degrees and transmit acquired image information to the PC; a small magnet is arranged at a vertex of a fluted disc of the knotter; a proximity switch is installed through a magnetic base at the rear end of the knotter and close to one side of the transmission box; and the distance between the small magnet and the proximity switch is less than a preset induction distance, and the proximity switch is connected with the PC through the synchronous circuit board. The device and the method have the advantages of good synchronism, simple operation and fast signal response speed, and can be widely used in the field of balers.

Description

technical field [0001] The invention relates to an on-line detection device and method in the field of agricultural machinery, in particular to a device and method for synchronously detecting the action of a D-type knotter and the change of the tension of a binding rope. Background technique [0002] With the change of technical requirements for straw collection and bundling, the square baler has been widely used. The knotter is the key component of the square baler. The baler presses the scattered straw picked up on the ground into a rectangular bundle, and the knotter knots the straw bundles for easy loading, unloading, transportation, storage, etc. Knotter is a mechanism with extremely complex structure and movement. It completes the actions of sending rope, clamping rope, winding rope, catching rope, cutting rope, returning, tripping and so on in a short time of a few seconds or even less than 1 second. The action is completed by the rope feeding arc needle, rope clampi...

AI Technical Summary

Problems solved by technology

However, because it is difficult to simulate and analyze the binding rope and the compressed material, the research on the movement of each mechanism of the knotter at this stage is mostly based on the model simulation research in the state of no material and no binding rope, and the action of the knotter and the tension of the binding rope during the knotting process The research on the change has not been reported, but the accurate quantitative analysis of the action of the knotter and the change of the tension of the rope during the knotting process is helpful for the in-depth analysis of the knot theory and plays an important role in the optimization of the structure of the D-type knotter.

At this stage, the research on the kinematics of the knotter with the help of high-speed photography has been reported in related articles, and the relevant literature on the mechanical change of the knotter’s binding rope has also been elaborated, but the analysis of one type of data alone cannot provide insight into another. The data is defined and analyzed, and the results have certain limitations. Therefore, it is necessary to propose a technical means to analyze the obtained data synchronously, and then analyze the motion state and tension value of the binding rope at a certain moment. The results are useful for in-depth analysis of the knotter. Knotting principle plays a fundamental role

At this stage, there are no reports on the patents and articles related to the technical means of analyzing and researching the two simultaneously

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