CN2117647U

CN2117647U - Transporting mechanism of radiation source

Info

Publication number: CN2117647U
Application number: CN 92205834
Authority: CN
Inventors: 饶孝枢; 张石逊; 杨晓雁
Original assignee: Guangdong Weida Medical Equipment Group Co ltd
Current assignee: Guangdong Weida Medical Equipment Group Co ltd
Priority date: 1992-04-04
Filing date: 1992-04-04
Publication date: 1992-09-30

Abstract

The utility model provides a transporting mechanism of radiation source, which belongs to a component of a machine using x-ray to carry out treatment. The utility model solves the problem of complicated transporting mechanism of radiation source in the existing homogenous machines, and adopts a set of driving device to realize the alternating transmission of double source. The utility model comprises a set of driving device, a convertor arranged in a source storage container and controlling the kind of transporting source, and an intermediate memory. The convertor is drawn by an electromagnet to do indexing action and can alternatively change the kind of the source sent out, and the source being not sent out is transported to the intermediate memory and is still reserved in the shielding device. The utility model has the advantages of simple structure and protective security.

Description

Transporting mechanism of radiation source

The utility model belongs to parts in the radioactivity instrument, and it relates to the structure of sending source and source of bank savings part.

Along with the development of industrial technology, the use that the ray width of cloth of radiomaterial is penetrated has development widely in industrial and agricultural production, as uses the radiation exposure seed since this century, and energy diseases prevention, high yield can produce peculiar variation.With it shine energy that mineral and metal have anticorrosion have can produce transformation.The ray of radiomaterial has very strong lethal effect to the human normal cell, and therefore requiring when operation must be accurately strict, guarantee safety.For this reason, the radio exposure source makes a small and exquisite right cylinder, be connected in the wire rope cable-end of conveying, only allow during output to move in the hose passages of regulation, any mistake does not appear when guaranteeing to export, do the experiment of the unimpeded reliability of passage with the dummy source that is provided with earlier and make radioactive source output detection and localization, carry radioactive source to select concrete position to place passage as required each time with other control device.What have in existing machine can send a plurality of radioactive sources simultaneously, and the usefulness that has two covers or many covers drive and connecting gear, and such machine setting comprises that hardware and software is all very complicated, and can only be used in low dose for a long time at a slow speed in the operation.

The purpose of this utility model is to provide the source feeding mechanism of the radio exposure operation machinery of a kind of heavy dose of short time, it adopts a single radioactive source and a dummy source, computerized control working position, the radioactive source output back of output channel in time of ducted dwell point and stop, adopt a cover drive unit and a source feeding mechanism simple in structure, it can send different source kinds selectively, another still is retained among the safe shielding apparatus, to guarantee safety when a source is sent.

By as above design, driving wheel, the head that the novel source feeding mechanism that this programme provided used the stepper motor power source that drives usefulness, have big cornerite tightening belt and cable sector installs homology kind afterbody not and be fixed on that on the driving wheel two send source cable, security mask source storage device, and to the radioactive source sent or the detection and location mechanism of dummy source, what it was concrete is characterized as: it is by the driving mechanism of a cover transmission radioactive source and dummy source and be arranged on the converter of controlled delivery source kind in the security mask source storage device and intermediate store forms.Its converter is that an inside has the element that transposition device external belt has two source input channels and two source output channels; Its intermediate store is an element that has the storage area that can collect the source that is not sent and cable.

The present invention program takes is the method that realizes radioactive source and dummy source alternate transmission with a cover driving mechanism, and this method is that the converter and an intermediate store of a controlled delivery source kind being provided with in the security mask source storage device behind driving wheel realizes.Two provenances through drive wheel enter converter simultaneously, and one of two output channels of converter are delivered to intermediate store, another pipeline is delivered to human body through corresponding other mechanism, realize the operation of two source alternate transmission in each program through the conversion of converter inside, the source that is not sent is retained among the intermediate store of security mask source storage device.

The converter of the controlled delivery source kind in this source feeding mechanism by valve head, transposition body, valve end, transposition with tractive magnet, and inner hose form, its transposition body is positioned between valve head and the valve end, the transposition body can be done the parallel transposition of moving or rotating, the input channel in two sources of converter connects with the cable sector on driving wheel limit, receives on the intermediate store for one in the output channel in its two sources.Another output channel is delivered to human body through corresponding other mechanism with the source of output.Converter in the present invention provides three kinds of following schemes: the 1. device valve head of this conversion, valve end and transposition body all are rectangular parallelepipeds, the transposition body is near the front end face of valve end, certain distance is arranged between transposition body and the valve head, the two through hole that connects the source input channel on the valve head is for horizontal, two equidistant horizontal through holes contour with it are also arranged on transposition body, in the distance between transposition body and valve head, each connects diplopore between the two with flexible pipe, the front end face of valve end has three contour holes of the horizontal hole with the transposition body, the lateral opening distance of its interstitial hole to two all with the transposition body on the distance of two through hole equate, the transposition body can be done the translation of transposition on the horizontal direction, the distance of transposition translation is the distance in two holes on the transposition body, and two holes before and after the transposition on the transposition body and the interstitial hole and a corresponding lateral opening strictness of valve end align.Valve end rear end face has the hole of two homeotropic alignments of connection source output channel, the following hole straight hole UNICOM on interstitial hole on the front end face and the rear end face, the last hole straight hole UNICOM of two lateral opening and rear end faces on the front end face.2. the valve head of this converter, valve end and transposition body all are rectangular parallelepipeds, and the transposition body is positioned between valve head, the valve end, and the three contacts with each other cooperation, and the transposition body can be done the transposition translation of horizontal direction.Two holes that connect the source input channel on the valve head are the through hole of homeotropic alignment, transposition body front end face has totally four holes of two row's homeotropic alignments, four holes that transposition body rear end face has a row of horizontal to arrange, two horizontal through holes are arranged on the valve end, the D of the left side two homeotropic alignments of transposition body front end face, the H that E hole and the rear end face left side two are horizontal, K uses in the hole straight hole UNICOM, the F of front end face the right two homeotropic alignments, the M that G hole and rear end face the right two is horizontal, L uses in the hole straight hole UNICOM, D before the transposition of transposition body, two hole strictnesses on E hole and the valve head align, meanwhile, H, the two through hole strictness of K hole and valve end aligns, F after the transposition, two holes and L on G hole and the valve head, two hole strictnesses of M hole and valve end align, and the distance of transposition body translation transposition is D, distance between the F hole.3. the transposition body in this converter is to constitute by connecting institute with coilable reed in the middle of two sections right cylinders, the leading portion right cylinder of transposition body have two with valve head on connect the through hole that two hole strictnesses of source input align, have on the back segment right cylinder with the valve end on the two through hole that aligns of two hole strictnesses, two flexible pipe UNICOMs are used in two holes before and after the transposition body on two right cylinders respectively, one end of its transposition body is fixed, the other end can be done 180 ° of transpositions and rotate under the tractive magnet effect, the corresponding two hole strictnesses of two Kong Yingyu of rotating part align before and after the transposition.

Intermediate store in this programme is a flat cylindrical box body, and it is made up of the box body that has central shaft, lid and rotor wheel.Wherein its box body and lid constitute an airtight container, its rotor is held on the central shaft by bearing bracket stand, its rotor is the wheel of a short cylindrical shape, face upper shed at one end, there is the space that can hold the source and send the source cable inside, on lid, have one the source that is stored can be input in the rotor wheel and with the joining inclined via-hole of converter source output channel, the center line in this hole is vertical with the box body radius and become less acute angle with lid.This is arranged on intermediate store in the security mask source storage device and also can be arranged among other source of bank savings shield facility outside the security mask source storage device.

Adopt this programme can embody following superiority: 1. under the prerequisite that makes dummy source and brachytherapy sources operate as normal equally, to use a cover drive unit, simplified the structure of machinery and hardware, the program of the control that simplifies the operation; 2. another source still is retained among the security mask source storage device in output one provenance, has guaranteed handling safety, also avoids the radioactivity width of cloth of surrounding environment is penetrated pollution; 3. the modular construction of being set up is simple, has reduced the cost of complete machine, is suitable for promoting the use of.

Fig. 1 is the general illustration of the novel source feeding mechanism of this programme;

Fig. 2, Fig. 3, Fig. 4 are three kinds of embodiment structural representations of converter;

Fig. 5 is the structural representation of intermediate storage.

The structure and the course of work below in conjunction with this device of description of drawings, driving wheel (1) is directly installed on the stepper motor (11), around driving wheel, pack tightly with tightening belt (12), send source cable (2) and (3) the head on installing radioactive source and dummy source, adopting miniature radioactive source external form in this programme is ∮ 1.1 * 6, radiation source material can adopt iridium 192, dummy source can adopt low dose of radioactive source, its physical dimension is identical with radioactive source, the cable sector on self-powered driving wheel limit picks out two and send source capsule road (4), (5), converter (7) and intermediate store (10) all are located among the security mask source storage device (6), the input channel in two sources is connected on the front end of converter (7), source output channel (9) is received on the intermediate store (10), and another source output channel (18) is delivered to human body through corresponding other mechanism.Valve head 1(13 in first scheme of converter) external source input channel (4), (5), through two flexible pipes (14), (15) and transposition body 1(16) link, the transposition body can be done the translation of transposition under the effect of tractive magnet (17), valve end 1(18) front end face has A, B, three holes of C, and rear end face has two Kong Yuyuan output channels (8), (9) to connect.Valve head 2(19 in the alternative plan of converter) through hole of two homeotropic alignments is arranged, take over road (4), (5), transposition body 2(20) front end face has D, E, F, G four holes, rear end face has H, K, L, M four holes, valve end 2(21) have two through holes to take over roads (8), (9), transposition body 2(20 on) under the effect of tractive magnet (17), can do the translation of transposition.Valve head 3(27 in third party's case of converter) (4), (5) are taken in two holes on, conversion body 3 comprises preceding right cylinder (22) but torsion film (23), hose (24), (25) and back right cylinder (26), the preceding right cylinder (22) of transposition body 3 can be made 180 ° transposition rotation, valve end 3(28 in tractive magnet (17) effect down) connect output channel (8), (9).Lid of intermediate store (29) and box body (30) are tight to be cooperated, and central shaft (31) is held rotor wheel (32) by bearing bracket stand, has inclined hole to connect with the efferent duct (9) in source on the lid.The security mask source storage device is made up of metal shell and the inner lead of filling, to prevent that ray from penetrating, the everything of this afterloading unit all is to carry out under the digital process control of computing machine, job initiation guarantees to send earlier the dummy source test channel by digital process, this moment, radioactive source entered intermediate store through pipeline (9), because source and cable are to send into from the tangential direction of lid, with then promote its rotation after rotor wheel contacts, source and cable are reeled and be stored in the inner space of rotor wheel, dummy source is tested the rear drive sprocket counter-rotating that puts in place and is regained two sources, digital process control makes the converter transposition when next program is carried, and radioactive source is sent and dummy source enters intermediate store.

The model machine of this programme is through trial run proof, and its stable performance, protection are reliable, easy to operate, there is no any abnormal occurrence to occur.This device decapacitation is used and is being utilized on the various processors of ray, also can be used in the radiotherapeutic medicine equipment simultaneously.

Claims

1, a kind of novel source feeding mechanism that utilizes the machine that radioactive ray handle other material, it includes the stepper motor power source that drives usefulness, the driving wheel that has big cornerite tightening belt and cable sector, install two of radioactive source or dummy source at head and send the source cable, the security mask source storage device, and to the radioactive source sent or the detection and location mechanism of dummy source, it is characterized in that: it is by the driving mechanism of a cover transmission radioactive source and dummy source, and the converter (7) and the intermediate store (10) that are arranged on the controlled delivery source kind in the security mask source storage device (6) form, and wherein its two are sent source cable (2), (3) afterbody all is fixed on the driving wheel (1); Its converter (7) is that an inside has the element that transposition device external belt has the output channel in the input channel in two sources and two sources; Its intermediate store (10) is one and has the element that can collect the kind storage area, source that is not sent.

2, according to the described source feeding mechanism of claim 1, it is characterized in that it controlled delivery source kind converter by valve head, transposition body, valve end, tractive magnet, and the inner flexible pipe that connects usefulness form, wherein its transposition body is positioned between valve head and the valve end, the transposition body can be done the transposition campaign of translation or rotation, the input channel in two sources of converter connects with the cable sector on driving wheel limit, defeated source capsule road (8) in its two source output channels is received on the intermediate store, and another output channel (9) is delivered to human body through other corresponding mechanism with the source.

3, according to claim 1 or 2 described source feeding mechanisms, the valve head 1(13 that it is characterized in that its converter (7)), valve end 1(18) and transposition body 1(16) all be rectangular parallelepiped, connect source input channel (4) on the valve head, (5) two through hole is horizontal, two contour equidistant horizontal through holes are also arranged on the transposition body, use flexible pipe (14) between the two, (15) connect, valve end 1(18) front end face has three contour holes of the horizontal hole with the transposition body, the lateral opening distance of its interstitial hole to two all with the transposition body on the distance in two holes equate, transposition body 1(16) can do the translation of the transposition on the horizontal direction, the distance of transposition translation is the distance in two holes on the transposition body, and two holes before and after the transposition on its transposition body and the corresponding interstitial hole of valve end and a lateral opening strictness align; Valve end rear end face has the hole of two homeotropic alignments of connection source output channel, and the interstitial hole of front end face is connected by straight line pylone with the following hole of rear end face, and two on the front end face lateral openingly connected by straight line pylone with the last hole of rear end face.

4, according to claim 1 or 2 described source feeding mechanisms, the valve head 2(19 that it is characterized in that its converter (7)), valve end 2(21) and transposition body 2(20) all be rectangular parallelepiped, connect source input channel (4) on the valve head, (5) two holes are the through hole of homeotropic alignment, the both ends of the surface of transposition body contact with valve head and valve end respectively, transposition body 2(20) can do the transposition translation of horizontal direction, transposition body 2(20) front end face has the hole of two row's homeotropic alignments, the rear end face of transposition body has horizontal four holes of a row, horizontal two through hole is arranged on the valve end, the D of the left side two homeotropic alignments of transposition body front end face, the H that E hole and rear end face and the rear end face left side two are horizontal, the K hole connects with straight line pylone, the F of two homeotropic alignments on front end face the right, G hole and the horizontal M in rear end face the right, the L hole connects with straight line pylone, D before the transposition of transposition body, two hole through hole strictnesses on E hole and the valve head align, meanwhile, H, K hole and the two hole strictnesses of valve end align, F after the transposition, G hole and valve head two holes and L, M hole and the two hole strictnesses of valve end align, the last D of distance of transposition body translation transposition, distance between the F hole.

5, according to claim 1 or 2 described source feeding mechanisms, it is characterized in that the transposition body in its converter is two sections right cylinders (22), (26), the centre connects with coilable reed (23), the leading portion right cylinder of transposition body have two with valve head on the through hole that aligns of two hole strictnesses of source input, have on the back segment right cylinder with the valve end on the two through hole that aligns of two hole strictnesses, two flexible pipes (24) are used in two holes before and after the transposition body on two right cylinders respectively, (25) UNICOM, one end of its transposition body is fixed, can do 180 ° transposition in another and rotate under the effect of tractive magnet (27), the corresponding two hole strictnesses of two Kong Yingyu of rotating part align before and after the transposition.

6, according to the described source feeding mechanism of claim 1, the intermediate store that it is characterized in that it is a flat cylinder box body, it is by the box body (30) of band central shaft (31), lid (29), and rotor wheel (32) is formed, wherein its box body (30) and lid (29) constitute a closed container, its rotor wheel (32) is held on the central shaft (31) by bearing bracket stand, its rotor is that the wheel of a short cylindrical shape is in its end face upper shed, there is the space that holds the source and send the source cable inside, on lid, have one the source that is stored can be input in the rotor wheel and with the joining inclined via-hole of source delivery hose (9) of converter, the center line in this hole is vertical with the box body radius and become less acute angle with lid.

7,, it is characterized in that its intermediate store also can be by among the shield facility that comes other source of bank savings outside the radioactive source storage screen shielding apparatus according to the source feeding mechanism of claim 1 or 6.