Line drawing device for ball court

Abstract

The invention belongs to the technical field of sports facilities and relates to a line drawing device for a ball court. The device comprises a machine frame, a paint bucket, a compression roller, right adhesive tape, left adhesive tape, an inflatable shaft and a spray head. The two ends of the compression roller and the machine frame form a rotating pair. The inflatable shaft comprises a shaft body, an air bag, an inflation and deflation device and an expanding key. The expanding key is in a long strip shape and is located in an expanding key groove and fixedly connected with the outer surface of the air bag. The expanding key extends out of or retracts into the expanding key groove. The inflatable shaft is sleeved with the right adhesive tape and the left adhesive tape. The expanding key extends out of the expanding key groove and supports a right adhesive tape core tube and a left adhesive tape core tube. The paint bucket and the machine frame are fixedly connected. The paint bucket is connected with the spray head through an oil supply pipe. The contour of the line drawn by the line drawing device is quite flat, straight, orderly and attractive, the boundary interior and the boundary exterior have an obvious edge line, no transition area is formed, the drawn line left on the court finally has the quite clear edge, the phenomenon that the line is not uniform in thickness and weight is avoided, and dispute caused by the boundary on the court can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of sports equipment, and in particular relates to a field marking device. Background technique [0002] Many sports fields need to be marked on the field, and various marking vehicles are correspondingly supplied on the market. [0003] The marking car that uses at present has two types, and a kind of is to brush paint on the ground by roller or brush, and another kind is to utilize shower head to spray paint on the ground. [0004] For example, the invention patent application with the application number 201110125378.0, the title of the invention is "Roller-Driven Marking Vehicle", which describes an example of brushing paint on the ground with a roller brush. This invention relates to a wheel-driven marking vehicle , suitable for temporary marking in small-scale sports venues such as schools and practice venues. This invention is made up of vehicle bar, handle, left and right two wheels, railway carriage...

AI Technical Summary

Problems solved by technology

[0009] Sometimes the local area is sprayed more, and the paint flows to the low-lying areas, and flows outside the marked area, resulting in unclear outlines

[0010] The lines generated in this way are uneven at the edges, which is very unsightly

[0011] If it is designated as a badminton court, if the shuttlecock falls on the boundary of the transition zone during the game, the standard of whether it is in or out of the boundary is not clear, disputes often arise, and the referee cannot make a clear judgment

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