Stepping scanning torque measuring device in magnetic-levitation bearing support structure

Abstract

The invention discloses a stepping scanning torque measuring device in a magnetic-levitation bearing support structure, belonging to the measuring equipment, particularly the equipment for detecting the change of blood flow. The stepping scanning torque measuring device comprises a measuring outer cylinder, a measuring inner cylinder, a middle shaft, an upper bearing and a lower bearing. The middle shaft is arranged on the measuring inner cylinder, and the upper bearing and the lower bearing support the middle shaft. The stepping scanning torque measuring device is characterized in that: the upper bearing and the lower bearing are both magnetic-levitation bearings and are fixed on the respective bracket, a horizontal swinging rod is fixed on the middle shaft, the inner end of a balance spring is fixed on the middle shaft, the outer end the balance spring is fixed on a balance spring bracket, the periphery of a large rotating disc which is provided with a displacement detecting component on the edge is provided with a gear, the gear is meshed with a driving supporting wheel driven by a stepping motor, and the large rotating disc is supported horizontally by three supporting wheels including the driving supporting wheel. Because the upper magnetic-levitation bearing and the lower magnetic-levitation bearing are fixedly connected with the middle shaft on the measuring inner cylinder, the phenomenon that the suspension-fiber type equipment shakes in the process of measuring is eliminated, and the defect that the jewel bearings have frictional force is overcome.

Description

technical field [0001] The invention belongs to measuring equipment, in particular to equipment for testing blood rheology. Background technique [0002] There are three main techniques for clinical testing of blood rheology, namely, capillary, cone-plate, suspension wire, and hairspring. As a result of similar shear rates, organic components such as protein in the blood are easily attached to the inner wall of the capillary, causing changes in the smoothness, especially the diameter of the tube, and the cleaning of the capillary is difficult, so the capillary type has rarely been used, and the cone-plate blood flow It can measure the viscosity of a blood sample at a specific shear rate. The rotation speed of the blood cutting head rotating in the sample is affected by the viscosity of the sample, and the steady-state rotation speed or It is deceleration to calculate the viscosity of the sample. The rotation of the blood cutting head is driven by the electromagnetic field. ...

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Problems solved by technology

[0003] In order to overcome the existing hanging wire type blood rheological detection equipment, which is prone to shaking during measurement, and the jewel bearing type cannot overcome the lack of friction in the bearing, the present invention provides a magnetic suspension bearing support structure step-scan torque measurement device, the magnetic suspension bearing The supporting structure step scanning torque measurement device accurately uses the magnetic suspension bearing support structure and the step scanning and hairspring to measure the torque structure, which can measure whole blood and plasma samples in the range of 1-200mpa.s -1 Viscosity values ​​at any shear rate within the range

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