CN105769227A - Mechanical device for driving multiple layers of protective blades of medical X-ray beam limiting device - Google Patents
Mechanical device for driving multiple layers of protective blades of medical X-ray beam limiting device Download PDFInfo
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- CN105769227A CN105769227A CN201410816159.0A CN201410816159A CN105769227A CN 105769227 A CN105769227 A CN 105769227A CN 201410816159 A CN201410816159 A CN 201410816159A CN 105769227 A CN105769227 A CN 105769227A
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Abstract
The invention relates to a mechanical device for driving multiple layers of protective blades of a medical X-ray beam limiting device. Multiple layers of lead blades and a transmission mechanism are arranged in a shell, wherein the multiple layers of lead blades are divided into two groups which are arranged in an X direction and a Y direction, and a shield barrel is arranged in a path where an X-ray beam passes; the first layer of lead blades in the X direction are arranged in an X-ray tube shell, the second layer of lead blades in the X direction are arranged at the lower part of the shield barrel and the third layer of lead blade in the X direction are arranged at the lower parts of the second layer of lead blades in the X direction; the first layer of lead blades in the Y direction are arranged in the X-ray tube shell, the second layer of lead blade in the Y direction are arranged at the lower part of the shield barrel and the third layer of lead blade in the Y direction are arranged at the lower parts of the second layers of lead blades in the Y direction; and the output part of the transmission mechanism is connected to lead blade brackets of the various layers of lead blades. According to the mechanical device disclosed by the invention, radiation of X rays can be shielded to the greatest extent, the dosage of lead in the beam limiting device can be reduced and the weight of the beam limiting device can be reduced, and the medical device is conducive to environmental protection and is relatively high in reliability, transmission precision and service life.
Description
Technical field
The present invention relates to a kind of medical X-ray beam-defining clipper, specifically a kind of medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device.
Background technology
Medical X-ray beam-defining clipper (hereinafter referred to as beam-defining clipper) is the essential element of Medical X-ray diagnostic equipment.Beam-defining clipper is arranged on the ray of X-ray tube ball and sends the lower section of window, the needs according to diagnosis, it is possible to limit the radiation scope of X ray within the specific limits, be reduced as far as the X ray radiation to human body.For realizing this function, beam-defining clipper adopts certain thickness stereotype to be fabricated to plumbous leaf shielding X ray, in X-direction and Y-direction respectively by a pair plumbous leaf group, X-radiation ranges for rectangle, plumbous leaf is installed in the frame for movement within beam-defining clipper, manually or motor drive make the plumbous leaf group of X-direction and Y-direction move respectively, change X-radiation scope.
In order to make the operator of x-ray diagnostic equipment can be visually observed that the X-radiation scope of setting, a set of optical system being made up of visible light source and reflecting optics is have employed inside beam-defining clipper, visible ray consistent with X-radiation scope throwing is shone on human body, to indicate radiation scope.
The structure of current beam-defining clipper lead leaf mainly has the mode of two groups of monolayers and two groups of multilamellars.Two groups of mono-layer fashion frame for movements are simple, but the radiation effect of shielding stray x-rays is poor, in order to shield stray x-rays, need to shield with more stereotype at beam-defining clipper housing or inside, just the standard-required of X ray leakage can be met.But the stray radiation through the radiation of beam-defining clipper window cannot shield, and directly affects the quality of radioscopic image, particularly evident when being especially applied in Digitized X-ray diagnostic device.
Summary of the invention
For structual shield stray x-rays radiation effect this weak point poor of X ray beam-defining clipper lead leaf in prior art, the technical problem to be solved in the present invention be to provide a kind of can shield X ray to greatest extent radiation, reduce plumbous consumption in beam-defining clipper, be conducive to the medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device of environmental conservation.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
One medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device of the present invention, has multilamellar lead leaf and drive mechanism in its housing, wherein multilamellar lead leaf is two groups, is respectively arranged on X-direction and Y-direction, is provided with shielding cylinder on the path that X-ray beam passes through；The ground floor lead leaf of X-direction is located in X-ray tube housing, and the second layer lead leaf of X-direction is positioned at the lower section of shielding cylinder, and the third layer lead leaf of X-direction is located at the lower section of the second layer lead leaf of X-direction；The ground floor lead leaf of Y-direction is located in X-ray tube housing, and the second layer lead leaf of Y-direction is positioned at the lower section of shielding cylinder, and the third layer lead leaf of Y-direction is located at the lower section of the second layer lead leaf of Y-direction；The output part of drive mechanism is connected with the plumbous leaf support of above layers lead leaf.
The third layer lead leaf of second and layer lead leaf of described X-direction, the third layer lead leaf of X-direction and the second layer lead leaf of Y-direction and Y-direction is installed in housing respectively through X-direction lead leaf support and Y-direction lead leaf support, the second layer lead leaf of X-direction and the second layer lead leaf of Y-direction, the third layer lead leaf of X-direction and the third layer lead leaf of Y-direction are symmetrically arranged two groups, between group and group, the lower section at shielding cylinder is crisscross arranged, and the axial direction at X-ray beam forms groined type.
Described drive mechanism includes motor, X-direction motor gear, X-direction driving gear pair, Y-direction driving gear pair and X-direction lead leaf support, Y-direction lead leaf support, wherein the plumbous leaf support X-direction support shaft of X-direction and the X-direction rocking bar that is arranged on X-direction driving gear pair are connected with X-direction driving gear pair, X-direction driving gear pair engages with X-direction motor gear, and the output shaft of X-direction direct current generator is connected with X-direction motor gear；The plumbous leaf support of Y-direction is connected with Y-direction driving gear pair by Y-direction support shaft, and Y-direction driving gear pair is connected with Y-direction tumbler gear, and the output shaft Y-direction tumbler gear of Y-direction direct current generator connects.
X-direction lead leaf support and Y-direction lead leaf support are respectively arranged with two, and two plumbous leaf supports of X-direction are linked by the direct current generator of X-direction and the driving gear pair of X-direction；Two plumbous leaf supports of Y-direction are linked by the direct current generator of Y-direction and the driving gear pair of Y-direction.
The ground floor lead leaf of X-direction is two, is individually positioned on two ground floor lead leaf supports of X-direction；The ground floor lead leaf of Y-direction is two, is individually positioned on two ground floor lead leaf supports of Y-direction, and two ground floor lead leaf supports of X-direction are connected by X-direction ground floor support shaft with the plumbous leaf support of X-direction；Two ground floor lead leaf supports of Y-direction are connected by Y-direction ground floor support shaft with the plumbous leaf support of Y-direction.
Described shielding cylinder is square tube, and its outer surface is provided with lead layer.
The invention have the advantages that and advantage:
1. the present invention adopts the effect of the structual shield stray x-rays of two groups of multilamellar lead leaves significantly better than monolayer lead impeller structure, especially probe into the ground floor lead leaf shield effectiveness of X-ray tube ball window clearly, be applied in and can obtain good digitized video in Digitized X-ray diagnostic device.If adding the shielding cylinder of certain size inside beam-defining clipper, it is possible to shield the radiation of X ray to greatest extent, reducing plumbous consumption in beam-defining clipper, being conducive to the protection to environment, reduce the weight of beam-defining clipper.
2. the mechanical transmission structure that in the present invention, plumbous leaf drives adopts gear drive, has higher reliability and transmission accuracy and service life.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention front view；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the top view of Fig. 1.
nullWherein，1 is Y-direction third layer lead leaf，2 is X-direction lead leaf support，3 is Y-direction second layer lead leaf，4 is shielding cylinder，5 is Y-direction ground floor lead leaf，6 is Y-direction lead leaf support，7 is X-direction ground floor lead leaf，8 is X-direction second layer lead leaf，9 is Y-direction support shaft，10 is Y-direction rocking bar，11 is Y-direction ground floor support shaft，12 is Y-direction ground floor lead leaf support，13 is X-direction third layer lead leaf，14 is X-direction ground floor lead leaf support，15 is X-direction direct current generator，16 is X-direction motor gear，17 is X-direction potentiometer driving gear pair，18 detect potentiometer for X-direction position，19 is Y-direction commutating tooth wheel set，20 is Y-direction driving gear pair，21 detect potentiometer for Y-direction position，22 is X-direction support shaft，23 is X-direction rocking bar，24 is Y-direction potentiometer driving gear pair，25 is Y-direction direct current generator，26 is Y-direction ground floor support shaft，27 is 13 for X-direction driving gear pair.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is further elaborated.
As shown in Figures 1 to 3, one medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device of the present invention, has multilamellar lead leaf and drive mechanism in its housing, wherein multilamellar lead leaf is two groups, it is respectively arranged on X-direction and Y-direction, the path that X-ray beam passes through is provided with shielding cylinder；The ground floor lead leaf of X-direction is located in X-ray tube housing, and the second layer lead leaf of X-direction is positioned at the lower section of shielding cylinder, and the third layer lead leaf of X-direction is located at the lower section of the second layer lead leaf of X-direction；The ground floor lead leaf of Y-direction is located in X-ray tube housing, and the second layer lead leaf of Y-direction is positioned at the lower section of shielding cylinder, and the third layer lead leaf of Y-direction is located at the lower section of the second layer lead leaf of Y-direction；The output part of drive mechanism is connected with the plumbous leaf support of above layers lead leaf.
The third layer lead leaf of second and layer lead leaf of described X-direction, the third layer lead leaf of X-direction and the second layer lead leaf of Y-direction and Y-direction is installed in housing respectively through X-direction lead leaf support and Y-direction lead leaf support, the second layer lead leaf of X-direction and the second layer lead leaf of Y-direction, the third layer lead leaf of X-direction and the third layer lead leaf of Y-direction are symmetrically arranged two groups, between group and group, the lower section at shielding cylinder is crisscross arranged, and the axial direction at X-ray beam forms groined type.
X-direction lead leaf support and Y-direction lead leaf support are respectively arranged with two, and two plumbous leaf supports of X-direction are linked by the direct current generator of X-direction and the driving gear pair of X-direction；Two plumbous leaf supports of Y-direction are linked by the direct current generator of Y-direction and the driving gear pair of Y-direction.
The ground floor lead leaf of X-direction is two, is individually positioned on two ground floor lead leaf supports of X-direction；The ground floor lead leaf of Y-direction is two, is individually positioned on two ground floor lead leaf supports of Y-direction, and two ground floor lead leaf supports of X-direction are connected by X-direction ground floor support shaft with the plumbous leaf support of X-direction；Two ground floor lead leaf supports of Y-direction are connected by Y-direction ground floor support shaft with the plumbous leaf support of Y-direction；Shielding cylinder is square tube, and its outer surface is provided with lead layer.
The present invention adopts the effect of the structual shield stray x-rays of two groups of multilamellar lead leaves significantly better than monolayer lead impeller structure, especially probe into the ground floor lead leaf shield effectiveness of X-ray tube ball window clearly, be applied in and can obtain good digitized video in Digitized X-ray diagnostic device.If adding the shielding cylinder of certain size inside beam-defining clipper, it is possible to shield the radiation of X ray to greatest extent, reducing plumbous consumption in beam-defining clipper, being conducive to the protection to environment, reduce the weight of beam-defining clipper.
Described drive mechanism includes motor, X-direction motor gear, X-direction driving gear pair, Y-direction driving gear pair and X-direction lead leaf support, Y-direction lead leaf support, wherein the plumbous leaf support X-direction support shaft of X-direction and the X-direction rocking bar that is arranged on X-direction driving gear pair are connected with X-direction driving gear pair, X-direction driving gear pair engages with X-direction motor gear, and the output shaft of X-direction direct current generator is connected with X-direction motor gear；The plumbous leaf support of Y-direction is connected with Y-direction driving gear pair by Y-direction support shaft, and Y-direction driving gear pair is connected with Y-direction tumbler gear, and the output shaft Y-direction tumbler gear of Y-direction direct current generator connects.
Move into manual actuation and the motor of beam-defining clipper lead leaf drive two ways.Manual actuation mode simple in construction, less costly, it is suitable for nearby operating.The relative manual mode of motor drive mode structure is complicated, and cost is also of a relatively high, not only can nearby operate, and also can carry out remote-controlled operation, if equipped with Digital Control module, it is possible to make beam-defining clipper possess higher automaticity.The beam-defining clipper of this type of drive is applicable to the x-ray diagnostic equipment that automaticity is higher, and other has the x-ray diagnostic equipment of special applications.The commonly used direct current permanent magnet motor of current motor drive mode and the two kinds of motor of motor, DC motor control circuit is simple, motor and control circuit less costly, and owing to the structure of direct current generator itself is limit, positioning control accuracy is poor.The cost of stepping motor control circuit relative complex, motor and control circuit is relative and direct current generator is higher, but positioning control accuracy is high.What the present embodiment adopted is direct current generator.
The mechanical transmission structure that plumbous leaf drives currently mainly adopts gear drive and two kinds of structures of wire rope gearing.Gear transmission mode is frame for movement the most ripe in mechanical transmission structure, has higher reliability and transmission accuracy and service life.Wire rope gearing structure manufacturing cost is relatively low, but assembling and setting relative complex, reliability and service life are not as gear transmission structure, and what the present embodiment adopted is gear transmission structure.
The operation principle of the present invention is:
The major function of this beam-defining clipper is the square frames being centrally formed a rectangle at beam-defining clipper of the two groups of lead leaves of three layers by two groups of lead leaves of three layers of X-direction and X-direction, X ray forms radiation field size by square frame, and the X ray outside square frame is shielded by two groups of lead leaves of three layers of X-direction and two groups of lead leaves of three layers of X-direction and shielding cylinder respectively.Two groups of lead leaves of three layers of two groups of lead leaves of the three layers of X-direction and X-direction are rotated by the direct current generator of respective direction and drive, and move to beam-defining clipper center or opposite direction respectively, change the size of radiation field size.
When X-direction direct current generator is energized, direct current generator rotates, engaged with X-direction driving gear pair by the X-direction motor gear being arranged on motor output shaft, X-direction travelling gear pinion is made to rotate, drive the X-direction rocking bar being arranged on X-direction travelling gear pinion to rotate simultaneously, the also equidirectional rotation under the drive of the support shaft loaded in X-direction rocking bar of X-direction lead leaf support, makes to be arranged on the X-direction second layer lead leaf of X-direction lead leaf support and X-direction third layer lead leaf moves；The ground floor support shaft being simultaneously located at X-direction lead leaf support drives X-direction ground floor lead leaf support to move, and makes X-direction ground floor lead leaf also move simultaneously.Owing to 2 X-direction lead leaf supports are connected with X-direction driving gear pair with identical structure, the three layers lead leaf of 2 X-direction lead leaf supports and two groups of X-directions is made to move with the X-direction centrage symmetry of beam-defining clipper.Simultaneously under the drive of X-direction potentiometer gear pair, X-direction position detection potentiometer is simultaneously rotated, make the resistance value of X-direction position detection potentiometer output change in proportion with the movement of the three layers lead leaf of two groups of X-directions, reach the purpose of detection X-direction radiation field size size.Change and be added on X-direction direct current generator the polarity of DC voltage, make X-direction direct current generator clockwise or counterclockwise, it is possible to change the direction that the three layers lead leaf of two groups of X-directions moves.
When Y-direction direct current generator is energized, direct current generator rotates, rotated with driving Y-direction driving gear pair by the Y-direction commutating tooth wheel set being arranged on motor on output shaft, drive the Y-direction rocking bar being arranged on Y-direction travelling gear pinion to rotate simultaneously, the also equidirectional rotation under the drive of the support shaft loaded in Y-direction rocking bar of Y-direction lead leaf support, makes to be arranged on the Y-direction second layer lead leaf of Y-direction lead leaf support and Y-direction third layer lead leaf moves；The ground floor support shaft being simultaneously located at Y-direction lead leaf support drives Y-direction ground floor lead leaf support to move, and makes Y-direction ground floor lead leaf also move simultaneously.Owing to 2 Y-direction lead leaf supports are connected with Y-direction driving gear pair with identical structure, the three layers lead leaf of 2 Y-direction lead leaf supports and two groups of Y-directions is made to move with the Y-direction centrage symmetry of beam-defining clipper.Simultaneously under the drive of potentiometer gear pair in the Y direction, Y-direction position detection potentiometer is simultaneously rotated, make the resistance value of Y-direction position detection potentiometer output change in proportion with the movement of the three layers lead leaf of two groups of Y-directions, reach the purpose of detection Y-direction radiation field size size.Change and add the polarity of DC voltage on direct current generator in the Y direction, make Y-direction direct current generator clockwise or counterclockwise, it is possible to change the direction that the three layers lead leaf of two groups of Y-directions moves.
Claims (6)
1. a medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device, it is characterized in that: there is in its housing multilamellar lead leaf and drive mechanism, wherein multilamellar lead leaf is two groups, is respectively arranged on X-direction and Y-direction, is provided with shielding cylinder on the path that X-ray beam passes through；The ground floor lead leaf of X-direction is located in X-ray tube housing, and the second layer lead leaf of X-direction is positioned at the lower section of shielding cylinder, and the third layer lead leaf of X-direction is located at the lower section of the second layer lead leaf of X-direction；The ground floor lead leaf of Y-direction is located in X-ray tube housing, and the second layer lead leaf of Y-direction is positioned at the lower section of shielding cylinder, and the third layer lead leaf of Y-direction is located at the lower section of the second layer lead leaf of Y-direction；The output part of drive mechanism is connected with the plumbous leaf support of above layers lead leaf.
2. by the medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device described in claim 1, it is characterized in that: second and layer lead leaf of described X-direction, the third layer lead leaf of the third layer lead leaf of X-direction and the second layer lead leaf of Y-direction and Y-direction is installed in housing respectively through X-direction lead leaf support and Y-direction lead leaf support, the second layer lead leaf of X-direction and the second layer lead leaf of Y-direction, the third layer lead leaf of X-direction and the third layer lead leaf of Y-direction are symmetrically arranged two groups, between group and group, the lower section at shielding cylinder is crisscross arranged, axial direction at X-ray beam forms groined type.
3. by the medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device described in claim 1, it is characterized in that: described drive mechanism includes motor, X-direction motor gear, X-direction driving gear pair, Y-direction driving gear pair and X-direction lead leaf support, Y-direction lead leaf support, wherein the plumbous leaf support X-direction support shaft of X-direction and the X-direction rocking bar that is arranged on X-direction driving gear pair are connected with X-direction driving gear pair, X-direction driving gear pair engages with X-direction motor gear, and the output shaft of X-direction direct current generator is connected with X-direction motor gear；The plumbous leaf support of Y-direction is connected with Y-direction driving gear pair by Y-direction support shaft, and Y-direction driving gear pair is connected with Y-direction tumbler gear, and the output shaft Y-direction tumbler gear of Y-direction direct current generator connects.
4. by the medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device described in claim 1, it is characterized in that: X-direction lead leaf support and Y-direction lead leaf support are respectively arranged with two, two plumbous leaf supports of X-direction are linked by the direct current generator of X-direction and the driving gear pair of X-direction；Two plumbous leaf supports of Y-direction are linked by the direct current generator of Y-direction and the driving gear pair of Y-direction.
5. by the medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device described in claim 1, it is characterised in that: the ground floor lead leaf of X-direction is two, is individually positioned on two ground floor lead leaf supports of X-direction；The ground floor lead leaf of Y-direction is two, is individually positioned on two ground floor lead leaf supports of Y-direction, and two ground floor lead leaf supports of X-direction are connected by X-direction ground floor support shaft with the plumbous leaf support of X-direction；Two ground floor lead leaf supports of Y-direction are connected by Y-direction ground floor support shaft with the plumbous leaf support of Y-direction.
6. by the medical X-ray beam-defining clipper multilayer proofing blade driving machine tool device described in claim 1, it is characterised in that: described shielding cylinder is square tube, and its outer surface is provided with lead layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816159.0A CN105769227A (en) | 2014-12-24 | 2014-12-24 | Mechanical device for driving multiple layers of protective blades of medical X-ray beam limiting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410816159.0A CN105769227A (en) | 2014-12-24 | 2014-12-24 | Mechanical device for driving multiple layers of protective blades of medical X-ray beam limiting device |
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| CN105769227A true CN105769227A (en) | 2016-07-20 |
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| CN201410816159.0A Pending CN105769227A (en) | 2014-12-24 | 2014-12-24 | Mechanical device for driving multiple layers of protective blades of medical X-ray beam limiting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107714077A (en) * | 2016-08-10 | 2018-02-23 | 南京普爱医疗设备股份有限公司 | A kind of x-ray collimator for increasing C arm machine for shadow |
| CN111000582B (en) * | 2019-12-31 | 2024-04-26 | 南通市亿东医疗仪器有限公司 | X-ray radiation protection device for joint lifting of bulb tube, screen frame and DR imaging plate |
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| US3448270A (en) * | 1966-11-23 | 1969-06-03 | Machlett Lab Inc | X-ray collimating device wherein a plurality of adjustable overlapping leaves define a collimating cone |
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Application publication date: 20160720 |