A combined carbon brush assembly for ct slip ring

Abstract

The invention discloses a combined carbon brush assembly for a CT slip ring. The combined carbon brush assembly comprises signal brush assemblies, power source brush assemblies, a printed circuit board, wiring terminals and a fixing plate; by means of the signal brushes and the power source brushes, carbon brushes, springs, spring buckles and slip grooves can be combined together so as to be used, and therefore, the contact pressure of the carbon brushes can be controlled, assembly can be facilitated, the excellent contact performance and wear resistance of the carbon brushes can be ensured in a work process; a plurality of carbon brushes are arranged on the same ring track, and therefore, the signal transmission reliability and stability of the ring tracks can be improved, the service lives of the carbon brushes can be prolonged; and when a certain carbon brush is worn, only the single carbon brush is required to be replaced, and thus, the check and maintenance of the use conditions of the carbon brushes can be facilitated to a great extent, and maintenance costs can be reduced.

Description

technical field [0001] The invention relates to a carbon brush assembly, in particular to a combined carbon brush assembly for a CT slip ring, which belongs to the technical field of CT slip rings. Background technique [0002] Spiral CT machines generally use slip rings to realize fast and reliable transmission of data such as power supply, images, and control signals during continuous rotation between the rotary motion detector and the scanning frame. The detection system and the radiation source are fixed on the rotating slip ring to form a rotating Part, the static part on the scanning frame uses high-quality carbon brush components, which are in close contact with the rotating slip ring to realize the electrical connection between the rotating part and the static part. Then connect the brush to the external power supply to realize the detection signal output of the detection system through the contact of the signal ring on the slip ring with the signal brush, and transm...

AI Technical Summary

Problems solved by technology

Gold alloy monofilament brush, because the contact material is mainly composed of gold and its precious metal elements, has excellent contact performance and wear resistance, but due to the small size of the monofilament brush, the service life is short when used on CT slip rings, and the brush wire After wear and tear, the ring signal is disconnected, which affects the normal use function, and the cost is high

The silver brush bundle is a bundle of silver alloy wires (the diameter of the single wire is 50-100 μm). Due to the decision of material factors, the silver alloy has certain advantages in cost and performance compared with the carbon brush and the gold alloy single wire brush. In the long-term sliding contact, it is easy to cause individual wires to be worn off first, resulting in debris, and it is easy to cause a short circuit between adjacent slip rings

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