Rotary device of medicine image-forming system

A technology for a medical imaging system and a rotating device, applied in the field of rotating devices, can solve the problems of ball damage, increased contact fatigue damage on the surface of the ball, high noise and vibration, and achieve the effects of ensuring stability and increasing the rotation speed.

Active Publication Date: 2010-04-07
SIEMENS SHANGHAI MEDICAL EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the speed increases, the pressure and friction of the balls inside the bearing will increase sharply, and the contact fatigue damage on the surface of the balls will increase, which will lead to higher and higher temperature, noise and vibration of the bearing until the balls are damaged, affecting the system. normal work

Method used

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  • Rotary device of medicine image-forming system
  • Rotary device of medicine image-forming system
  • Rotary device of medicine image-forming system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 2 It is a front view and a sectional view of a rotating device using double slewing bearings according to Embodiment 1 of the present invention, wherein the left figure is a front view, and the right figure is a sectional view along the A-A' axis of the left figure. Such as figure 2 As shown, the rotating device is installed on the fixed support 251 of the CT, and includes two nested slewing bearings, and the two nested slewing bearings are composed of a fixed outer ring 211 , a low-speed turntable 212 and a high-speed turntable 213 . Wherein, the fixed outer ring 211, the low-speed turntable 212 and the high-speed turntable 213 are three iron rings respectively.

[0035] The outer side of the fixed outer ring 211 is fixed on the support 251 of the CT frame, and the low-speed bearing driving device can be a low-speed bearing driving motor (or motor) 221, which is installed on the ground. The base of the CT frame can be placed on the ground, and the supports a...

Embodiment 2

[0047] image 3 It is a schematic cross-sectional view of a rotating device using double slewing bearings according to Embodiment 2 of the present invention. This cross-sectional view is also along the figure 2 The A-A' axis profile of the front view, with figure 2 The difference in the cross-section in is that, image 3 Only the section with the double slew bearing is shown, not the entire section.

[0048] This embodiment is basically the same as Embodiment 1, and also adopts a double bearing structure, and image 3 neutralize figure 2 The reference numerals with the same last two digits indicate components with the same function, and their functions will not be repeated here. Such as image 3 As shown, the difference between this embodiment and the first embodiment is that the low-speed bearing driving motor 321 is installed on the fixed outer ring 311 . In addition, in image 3 In , the X-ray tube 361 and the slip ring 371 installed on the high-speed turntable 31...

Embodiment 3

[0051] Figure 4 It is a front view and a sectional view of a rotating device using double slewing bearings according to Embodiment 3 of the present invention, wherein the left figure is a front view, and the right figure is a sectional view along the A-A' axis of the left figure.

[0052] This embodiment is basically the same as Embodiment 1, and Figure 4 neutralize figure 2 The reference numerals with the same last two digits indicate components with the same function, and their functions will not be repeated here. Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the width of the low-speed turntable 412 is larger, at least larger than the width of the high-speed turntable 413, and its cross-sectional shape is concave, and the concave shape includes an upper side, a lower side and a vertical side. The low-speed turntable 412 surrounds the high-speed turntable 413 inside its notch, the high-speed bearing drive motor 422 is instal...

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Abstract

This invention discloses a swiveling mechanism in a medical imaging system, comprising a fixed outer ring which is arranged fixedly on a support saddle of the medical imaging system; a low speed turntable which is arranged inside the inner edge the fixed outer ring and rotates relative to the fixed outer ring; a low speed bearing drive device which drives the low speed turntable to rotate relativeto the fixed outer ring; a high speed turntable which rotates relative to the low speed turntable, and the rotation direction is the same as the rotation direction of the low speed turntable; a highspeed bearing drive device which drives the high speed turntable to rotate relative to the low speed turntable. The swiveling mechanism of the invention uses a secondary swing bearing which not only increases the rotation speed of the medical imaging system, but also ensures the work stability of the medical imaging system.

Description

technical field [0001] The invention relates to a medical imaging system, in particular to a rotating device in the medical imaging system. Background technique [0002] Medical imaging systems, especially X-ray imaging systems and computed tomography (CT, Computed Tomography) imaging systems are composed of X-ray emitting tubes (tubes), detectors, calibrators, high-voltage generators and many other precision electrical physical equipment complex imaging system. These electrical and physical devices are installed on a huge turntable and rotate at a high speed under the drive of the slewing bearing. [0003] figure 1 It is a structural schematic diagram of an existing CT gantry, wherein the left figure is a front view, and the right figure is a sectional view. Such as figure 1 As shown, a fixed outer ring 111 is installed on the support 151 of the CT frame, and a bearing driving motor 121 is installed on the fixed outer ring 111. The bearing driving motor 121 drives the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03H05G1/02G01T1/161
Inventor 赵文江
Owner SIEMENS SHANGHAI MEDICAL EQUIP LTD
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