A net pulling device suitable for variable temperature environment

Abstract

The invention discloses a net stretching device suitable for variable temperature environments, which includes an adjustment mechanism, a connection mechanism and a net pressure mechanism; the adjustment mechanism includes a guide cylinder, a positioning cylinder, a spring and a mounting support, and the guide cylinder is sleeved on the positioning cylinder And the inner wall of the guide cylinder is in contact with the outer wall of the positioning cylinder, and the spring is installed in the cavity formed by the positioning cylinder and the guide cylinder; the connecting mechanism includes a connecting rod and a double U-shaped hinge, and one end of the connecting rod passes through the mounting bracket in turn The seat, spring, and the top of the guide cylinder are fixed, and the other end is connected with the connecting part I of the double U-shaped hinge. The net pressing mechanism includes pressing plate I and pressing plate II, and the screen is pressed between pressing plate I and pressing plate II; The net mechanism is fixedly connected with the connecting portion II of the double U-shaped hinge. The stretching device utilizes the design principles of spring expansion and stiffness to adapt to the needs of wire mesh changes with temperature and load, and achieves the purpose of changing the tension force or tension position of the stretching mechanism.

Description

technical field [0001] The invention belongs to the technical field of net-drawing mechanisms, and relates to a net-drawing device suitable for variable temperature environments. Background technique [0002] Large-scale netting devices are mainly used in wind tunnel damping nets and protective nets for engineering construction. In a temperature-changing environment, the length of large-size wire mesh has the characteristics of increasing with temperature rise and decreasing with temperature drop. When the temperature drops, the wire mesh becomes smaller, and the wire mesh stress becomes larger under load, which is easy to be damaged; when the temperature rises, the wire mesh becomes smaller. When the mesh is elongated and under load, the deformation of the mesh will exceed the design value. [0003] The stretching mesh mechanism can expand and contract according to the deformation trend of the structural mesh, which is conducive to the safety of the mesh structure and achi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a net stretching device suitable for variable temperature environments, aiming at problems such as the size of the wire mesh varies with temperature, the stretching mechanism has low adaptability, and the deformation and tension are uncontrollable in a variable temperature environment. Based on the adjustment mechanism composed of guide parts and springs, using the spring expansion and stiffness can be designed to meet the needs of the wire mesh with changes in temperature and load, to achieve controllable deformation of the wire mesh

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