An Electromagnetic Gravity Balance Device

Abstract

The invention relates to the fields of precise testing technologies and instruments, in particular to an electromagnetic gravity balance device. The electromagnetic gravity balance device comprises a guide rail wound by a spiral coil and a rotor. A first contact arm and a second contact arm are installed on the rotor; the rotor is installed in the hollow guide rail and can vertically move along the hollow guide rail; the first contact arm and the second contact arm are in contact with the spiral coil outside the guide rail in the mode that pre-tightening force is exerted through springs; the first contact arm and the second contact arm are connected with a first contact and a second contact respectively and connected with the positive electrode and the negative electrode of a power source through the contacts; when the electromagnetic gravity balance device works, a current connected through the first contact and the second contact is adjusted according to the rotor and externally-loaded corresponding gravity, and then gravity balance force is generated. The electromagnetic gravity balance device has the advantages of being simple in structure and high in dynamic response speed; the defects that an existing gravity balance structure is large in system inertia and low in dynamic response speed are overcome.

Description

technical field [0001] The invention relates to the field of precision testing technology and instruments, in particular to an electromagnetic gravity balance device. Background technique [0002] Many guide rails in industrial products adopt a vertical structure. At this time, the force in the upper and lower directions of the guide rail movement is inconsistent, resulting in inconsistent motion states. For precision control systems, a balance system must be used to balance the downward gravity of the system. The existing balance system basically uses a gravity balance block (the gravity balance block refers to a mover device similar to a pulley device with a guide rail suspended on one side, and a heavy object of corresponding weight is suspended on the other side. This heavy object is a gravity balance block) Or the balance cylinder (the balance cylinder fills and deflates air according to the movement state of the mover, and then achieves the effect of balancing gravity)...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide an electromagnetic gravity balance device; it can overcome the shortcomings of the existing gravity balance structure, such as large system inertia and low dynamic response speed

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