Adjustable tree pit cover plate of glass fiber reinforced plastics

Abstract

The invention discloses an adjustable tree pit cover plate of glass fiber reinforced plastics. The cover plate comprises a positioning box and a glass fiber reinforced plastics clapboard, the positioning box is a square box-shape structure, the glass fiber reinforced clapboard is arranged inside the positioning box, a round opening is arranged in the center location of the glass fiber reinforced plastics clapboard, the glass fiber reinforced plastics clapboard comprises an outer circle clapboard, a middle circle clapboard and an inner circle clapboard, each inner side edge of the outer circle clapboard is connected in a hinged mode with the middle circle clapboard, the middle circle clapboard has in total four blocks which are the same isosceles trapezoid in structure, the adjacent vertexes of the adjacent circle clapboards are both connected in a hinged mode within the inner circle clapboard. The structure of the adjustable tree pit cover plate is simple, through the coordinated use of the outer circle clapboard and the middle circle clapboard and the inner circle clapboard arranged in the glass fiber reinforced plastics clapboard, and according to the changes of the diameters of the planted trees, shape changes are made to the cover plate in order to better fit the root parts of the trees, the breathability of the tree roots is not affected, and the service life of the device is greatly increased.

Description

technical field [0001] The invention relates to the technical field of FRP equipment, in particular to a FRP adjustable tree hole cover plate. Background technique [0002] The scientific name of FRP is fiber reinforced plastic, commonly known as FRP, that is, fiber reinforced composite plastic. According to the fiber used, it is divided into glass fiber reinforced composite plastic (GFRP), carbon fiber reinforced composite plastic (CFRP), boron fiber reinforced composite plastic, etc. It is a composite material with glass fiber and its products (glass cloth, tapes, felt, yarn, etc.) as reinforcing material and synthetic resin as a matrix material. Fiber-reinforced composites are composed of reinforcing fibers and a matrix. The diameter of the fiber (or whisker) is very small, generally below 10 μm, with fewer and smaller defects, and the fracture strain is about 30 / 1000. It is a brittle material that is easy to damage, break and corrode. Compared with fibers, the strengt...

AI Technical Summary

Problems solved by technology

However, the tree hole cover plates made of the above-mentioned materials have the problem of poor landscape effect. At the same time, with the continuous growth of trees, this type of tree hole cover limits the diameter of the rhizome of the tree, thereby affecting the root respiration of the tree.

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