C-shaped arm structure rack rotation driving device for radiotherapy equipment
A rotary drive device, radiation therapy technology, applied in radiation therapy, treatment, etc., to achieve the effect of realizing electrical limit, mechanical limit, and improving assembly efficiency
Inactive Publication Date: 2014-01-15
YICHANG SENDE ELECTRICAL EQUIP MFR
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Problems solved by technology
The traditional open transmission is easy to cause pollution due to oil leakage, poor transmission accuracy, poor positioning accuracy, and cannot form an independent assembly unit, which is not conducive to the organization of assembly operations
However, if the closed worm gear mechanism is used, it is more difficult to limit the angle.
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[0017] Such as figure 1 , 2 Among them, a C-arm structure rack rotation drive device for radiotherapy equipment, including a box body 1, a worm gear 4 and a worm 9 mechanism are installed in the box body, and a rotation angle sampling gear 2 is installed at one end of the main shaft 5 of the worm wheel 4, and the box body A limiter 10 is provided on the end surface of 1, and the limiter 10 cooperates with a limit pin 104 provided on the end surface of the rotation angle sampling gear 2, and a rotation angle sampling device 11 is also provided on the end surface of the box body 1. The rotation angle sampling device 11 is a ten-turn potentiometer or an absolute value encoder. Absolute encoders are preferably used.
[0018] Such as image 3 In the limiting device 10 described above, the limiting slider 101 is installed in the limiting waist-shaped groove 102 penetrating through the end surface of the box body 1, and the limiting slider 101 and the limiting slider 101 arranged...
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A C-shaped arm structure rack rotation driving device for radiotherapy equipment comprises a box body, a mechanism for a worm wheel and a worm is arranged in the box body, a rotating angle sampling gear is arranged at one end of the main shaft of the worm wheel, a limiting device is arranged on the end face of the box body, and is matched with a limiting pin arranged on the end face of the rotating angle sampling gear, and a rotating angle sampling device is arranged on the end face of the box body. Closed worm wheel and worm driving is adopted, a rack is rotated to achieve mechanic operating and manual functions, mechanical self-locking is achieved, and the oil leakage problem of open type driving is solved. The specially-manufactured limiting device can carry out limiting in a closed structure conveniently. Rack rotating angle signals are sampled, the function of self-adaption error compensation is achieved, precision is high, digital signals are adopted, and digital display can be carried out in real time. Through the limiting device for limiting the position of a rack rotation limit, dual safety guarantees are provided, and electrical limiting and mechanical limiting can be achieved. The C-shaped arm structure rack rotation driving device can be used as an independent assembling unit.
Description
technical field [0001] The invention relates to a rotary drive device, in particular to a rotary drive device for a C-arm structure frame of radiotherapy equipment. Background technique [0002] The rotation of the C-arm structure frame of traditional radiotherapy equipment is to use a common motor to drive a group of open worm gear mechanisms, or to drive a sprocket mechanism to realize the rotation of the frame. The rotation angle of the frame is determined by the ten-turn potential to acquire analog signals. The traditional open transmission is easy to cause pollution due to oil leakage, poor transmission accuracy, poor positioning accuracy, and cannot form an independent assembly unit, which is not conducive to the organization of assembly operations. However, if a closed worm gear mechanism is adopted, it is more difficult to limit the angle. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a C-arm stru...
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IPC IPC(8): A61N5/00
Inventor 周尤刚刘森张江城徐保钧于宁波
Owner YICHANG SENDE ELECTRICAL EQUIP MFR