Precision testing device for current-carrying friction pair of conductive slip ring of satellite

A technology of conductive slip ring and current-carrying friction, which is applied in the direction of measuring devices, testing wear resistance, and testing material strength by applying repetitive force/pulsation force, etc. problems, to facilitate measurement and characterization, ensure positioning accuracy, and improve accuracy

CN113281153AActive Publication Date: 2021-08-20HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-08-20

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Abstract

A precision testing device for a current-carrying friction pair of a conductive slip ring of a satellite disclosed by the present invention comprises at least one group of testing assemblies, each group of testing assemblies comprises an upper sample loading measurement mechanism and a lower sample detachable positioning mechanism, and the lower sample detachable positioning mechanism comprises a lower sample positioning support block and a lower sample positioning fixing block. The lower sample positioning fixing block and the lower sample positioning supporting block are circumferentially positioned through a lower sample positioning structure; a lower sample reciprocating swing driving mechanism drives the lower sample to swing back and forth in the circumferential direction; and the upper sample loading measurement mechanism comprises an upper sample clamp, an upper sample positioning and supporting block, an upper sample positioning and fixing block and a shear stress sensor group, an upper sample is driven to move through an upper sample displacement loading module, and the magnitude of force borne by the upper sample is detected through the shear stress sensor group. The device disclosed by the invention has the advantages that the position consistency of the sample after being disassembled and reassembled is ensured, and the circumferential reciprocating swing of the lower sample can be realized.
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Description

technical field

[0001] The invention relates to the technical field of experimental equipment, in particular to a precision testing device for a current-carrying friction pair of a satellite conductive slip ring. Background technique

[0002] The conductive slip ring is mainly composed of slip ring and brush wire. The surface of the slip ring is processed with V-shaped grooves, and the surface is treated with multi-layer precious metal plating. The brush wire is made of gold alloy wire. The conductive slip ring transmits current through the sliding contact between the brush wire and the V-shaped groove of the slip ring. As a key component in the satellite, the conductive slip ring usually requires a maintenance-free working life of more than 10 million revolutions, which puts forward high requirements for ground testing. However, in long-term actual work, the conductive slip ring will experience unexpected additional wear and unstable contact resistance in the electrical co...

Examples

Embodiment Construction

[0036] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0037] see Figure 1 to Figure 8 , this embodiment discloses a precision test device for satellite conductive slip ring current-carrying friction pairs, including a base 1, at least one set of test components is arranged on the base 1, three sets of test components are used in this embodiment, three sets of test components The components are arranged sequentially in the front-to-back direction. Each set of test components includes an upper sample loading and measuring mechanism, a lower sample detachable positioning mechanism, a temperature measurement module, and a water cooling module.

[0038] The detachable p...