X-ray generator beam limiting device and blade driving device thereof

Abstract

The invention discloses a blade driving device of an X-ray generator beam limiting device. The blade driving device comprises a base plate (1), guide rails (10 and 11), a left blade (2), a right blade (9), eccentric wheels (5 and 7), a blade vertical retaining plate (20), pushing rods (4 and 8), springs (3 and 30), a support (16), a motor (100), a driving gear (13), a driven gear (15) and an intermediate gear (14). The guide rails (10 and 11), the left blade (2), the right blade (9), the eccentric wheels (5 and 7) and the blade vertical retaining plate (20) are fixedly connected to the base plate (1). The pushing rods (4 and 8) are fixedly connected to the blade vertical retaining plate (20). The springs (3 and 30) are fixedly connected with the base plate (1) and the blade vertical retaining plate (20). The support (16) is connected to the back side of the base plate (1). The motor (100), the driving gear (13), the driven gear (15) and the intermediate gear (14) are fixedly connected to the support (16) on the back side of the base plate (1). The intermediate gear (14) is positioned between the driving gear (13) and the driven gear (15). Irradiation range of X-rays is adjustable in square, accuracy of blade movement can be controlled well, application of limiting switches is reduced, and the blade driving device is high in efficiency, low in cost and convenient to use and maintain.

Description

【Technical field】 [0001] The invention relates to the fields of medical equipment and electromechanics, in particular to a blade driving device of a beam limiter of an X-ray machine and a beam limiter of an X-ray machine. 【Background technique】 [0002] At present, X-ray machines are widely used in the field of medical equipment, and the beam limiter, as the main component of the X-ray machine, plays the role of adjusting the range of X-ray irradiation, which can shield some redundant X-rays to minimize X-ray exposure. Rays can cause damage to the subject and operator, and at the same time reduce the area where secondary rays are generated, improving the clarity of perspective or shooting. Therefore, the beam limiter plays a decisive role in the X-ray machine. [0003] The beam limiter of traditional medical X-ray machines is mostly a manual mechanism, which is inconvenient to operate and low in efficiency. It is necessary to effectively reduce the equipment adjustment time...

AI Technical Summary

Problems solved by technology

However, it is still a traditional beam limiter, which is manually controlled and cannot be adjusted remotely. The efficiency is not high, and there is no corresponding fixed facility when the blade opening and closing size meets the requirements.

[0007] Traditional beam limiters are mostly controlled manually, which is inconvenient to operate and low in efficiency

The general new blade driving device has complex structure, inconvenient maintenance and high cost of use

Individual new beam limiters such as the double-layer blade drive device of the X-ray beam limiter announced in patent 201120006465.X and the single-layer blade drive device of the X-ray beam limiter announced in 201120006469. The spring drives the blades of the beam limiter, but because the springs are prone to fatigue, resulting in a decrease in elastic precision, and the linkage of the blades cannot be accurately achieved, resulting in a decrease in control accuracy

At the same time, most of the existing beam limiters use steel wire guide rails, springs, and belt drives to realize the linkage of the blades, and its control accuracy is difficult to accurately grasp and the precision is low

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