CN112675441A - Portable CT device for radiotherapy - Google Patents
Portable CT device for radiotherapy Download PDFInfo
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- CN112675441A CN112675441A CN202011553516.0A CN202011553516A CN112675441A CN 112675441 A CN112675441 A CN 112675441A CN 202011553516 A CN202011553516 A CN 202011553516A CN 112675441 A CN112675441 A CN 112675441A
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Abstract
The invention belongs to the technical field of CT devices, in particular to a movable CT device for radiotherapy, which comprises a scanning ring and a fixed frame; the scanning ring is connected to the fixed frame; universal wheels are fixedly connected to four corners of the fixing frame; the bottom end of the fixing frame is provided with a cavity; the side wall of the bottom end of the fixed frame is fixedly connected with a fixed box; a motor is arranged in the fixed box; the output end of the motor is fixedly connected with a first rotating shaft; the first rotating shaft extends into the cavity, and the end part of the first rotating shaft is fixedly connected with a first bevel gear; the side walls of the two sides of the cavity are rotatably connected with second rotating shafts; the second rotating shaft and the first rotating shaft are perpendicular to each other; the invention provides a movable CT device for radiotherapy, which aims to solve the problem that in the prior art, a roller is adopted to move in the whole moving process of the CT device, then the roller is fixed to fix the whole CT device, but the roller is fixed and then is in rolling friction on the ground, so that the situation of shaking is easy to occur, and the detection of the CT device is influenced.
Description
Technical Field
The invention belongs to the technical field of CT devices, and particularly relates to a movable CT device for radiotherapy.
Background
In the field of modern medical technology, a CT scanning device is a frequently used detection device, and can assist doctors to make professional judgment on focuses and provide guarantee for life safety of patients. Radiotherapy, i.e., radiation therapy, may utilize ionizing radiation produced by radiation to kill tumor cells in a focal region of a subject. Radiotherapy is one of the important means for treating cancer, and more than half of tumor patients need to receive radiotherapy. Wherein the radiation is generated by a radiotherapy apparatus. X (gamma) rays, electron rays or proton rays are generally used to kill and damage tumor cells. The CT device is needed in the preparation stage of radiotherapy, along with the medical development and the health needs of people, the CT device can provide fast and efficient treatment services for tumor radiotherapy patients, the treatment services at the sides are urgent, and the design of the movable CT device for radiotherapy is valuable.
Some technical solutions related to the CT apparatus technology also appear in the prior art, for example, a chinese patent with application number 2012103860335 discloses a mobile CT scanning apparatus, which includes a frame and a scanning ring, the axis of the scanning ring is transversely arranged, and the mobile CT scanning apparatus is characterized in that: the horizontal moving parts are connected with the left side and the right side of the scanning ring and used for moving the scanning ring back and forth relative to the rack along the axial direction of the scanning ring, and wheels are further arranged at the bottom of the rack.
In the prior art, in the whole moving process of the CT device, the roller is moved, and then the whole CT device is fixed by the fixed roller, but the roller is in rolling friction on the ground after being fixed, so that the situation of shaking is easy to occur, and the CT device is influenced to be detected.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problem that in the prior art, the whole moving process of the CT device is realized by moving the roller wheel and fixing the whole CT device by the fixed roller wheel, but the roller wheel is positioned on the ground after being fixed and is in rolling friction, so that the situation of shaking is easy to occur, and the detection of the CT device is influenced, the movable CT device for radiotherapy is provided by the invention.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a movable CT device for radiotherapy, which comprises a scanning ring and a fixing frame; the scanning ring is connected to the fixed frame; universal wheels are fixedly connected to four corners of the fixing frame; the bottom end of the fixing frame is provided with a cavity; the side wall of the bottom end of the fixed frame is fixedly connected with a fixed box; a motor is arranged in the fixed box; the output end of the motor is fixedly connected with a first rotating shaft; the first rotating shaft extends into the cavity, and the end part of the first rotating shaft is fixedly connected with a first bevel gear; the side walls of the two sides of the cavity are rotatably connected with second rotating shafts; the second rotating shaft and the first rotating shaft are perpendicular to each other; a second bevel gear is fixedly connected to the second rotating shaft; the first bevel gear and the second bevel gear are meshed with each other; a pair of third bevel gears which are symmetrically distributed is fixedly connected to the second rotating shaft; a pair of first lead screws which are symmetrically distributed is fixedly connected to the side wall of the bottom end of the cavity; a fourth bevel gear is fixedly connected to the top end of the first lead screw; the third bevel gear and the fourth bevel gear are meshed with each other; the first lead screw is connected with a first sliding block through a nut; the side walls of two sides of the first sliding block are fixedly connected with first connecting rods; the bottom end of the first connecting rod is fixedly connected with a first supporting column; a first through hole is formed in the position, relative to the first support column, of the cavity; a through groove is formed in the first connecting rod; a sliding column is fixedly connected to the position of the cavity relative to the through groove; the sliding column is connected in the through groove in a sliding manner; when the CT device is operated, in the prior art, the roller is used for moving in the whole moving process of the CT device, then the fixed roller is used for fixing the whole CT device, but the roller is positioned on the ground after being fixed and is in rolling friction, the shaking condition is easy to occur, the detection of the CT device is influenced, and when the CT device needs to be fixed for a long time, the fixing of the roller is easy to be influenced by external factors and can drive the device to move. The first sliding block moves to drive the first supporting column to extend out of the device through the first through hole through the first connecting rod, the whole device is lifted by utilizing downward pushing of the first supporting column, the roller is separated from the ground, the first supporting column is adopted to support the whole CT device, the influence of the roller on the fixation of the whole device is avoided, and when the device needs to be moved, the motor is reversed, the supporting column is contracted back into the cavity, the roller is enabled to be contacted with the ground again, and the whole device is pushed to move.
Preferably, the first support column comprises a second support column and a third support column; the top end of the second support column is fixedly connected to the first connecting rod, and the bottom end of the second support column is provided with a thread groove; the top end of the third support column is rotatably connected with a threaded column; a quadrangular nut is fixedly connected to the threaded column; the third supporting column is connected in the thread groove through a thread column; when the device is in operation, when the whole device is fixed under the condition of uneven ground, the condition of instability of the device can occur, the detection effect of the device is influenced, the gravity center of the device is unstable, and the device is prone to toppling.
Preferably, a first annular groove is formed in the side wall of the bottom end of the second supporting column; the first annular groove surrounds the thread groove; an annular plate is fixedly connected to the side wall of the top end of the first annular groove through a spring; the bottom end of the annular plate is fixedly connected with a first rubber layer; a second annular groove is formed in the position, corresponding to the first annular groove, of the quadrangular nut; during operation, generally, disinfection water is used for disinfection every day in hospitals, sprayed disinfection water contains water vapor, threaded columns are exposed in the water vapor environment for a long time, rusting can occur, the threaded columns are blocked, and the height of the first supporting columns cannot be adjusted.
Preferably, a first annular cavity is arranged in the four-corner nut; the first annular cavity is positioned right below the second annular groove, the first annular cavity is communicated with the second annular groove through a second through hole, and four first cavities are formed in the four-corner nut; the first cavity is opposite to the side wall of the quadrangular nut; a first push plate is fixedly connected to the side wall of the first cavity, which is close to the threaded column, through a spring; the first push plate is connected in the first cavity in a sealing and sliding manner; a first push rod is fixedly connected to the side wall of the first push plate far away from the threaded column; the end part of the first push rod, which is far away from the first push plate, extends out of the four-corner nut and is fixedly connected with a first pressing plate; the first cavity is communicated with the first annular cavity through a first hose; during operation, when first support column height needs to be adjusted, need with on the spanner centre gripping four corners nut lateral wall, spanner centre gripping in-process can extrude first clamp plate and promote first push pedal inwardly moved through first push rod this moment, first push pedal is gaseous inwards to the extrusion, it is gaseous to get into first annular chamber through first hose, can remove the adsorption state to first rubber layer through the second through-hole, then after rotating four corners nut and adjusting, first push pedal kick-backs under the spring action, adsorb the gas in the first annular chamber, let first annular chamber be in the negative pressure state, tightly adsorb first rubber layer through the second through-hole, further seal whole screw thread post, guarantee the operating condition of screw thread post.
Preferably, the bottom end of the third supporting column is provided with a first groove; a supporting block is fixedly connected to the side wall of the top end of the first groove through a spring; a supporting plate is hinged to the side wall of the bottom end of the supporting block; the supporting plate is provided with a first sliding groove; a hinge rod is hinged to the side wall of the bottom end of the third support column; a second sliding block is hinged to the end part, far away from the third supporting column, of the hinged rod; the second sliding block is connected in the first sliding groove in a sliding manner; when the whole device needs to be fixed, the third supporting column is pressed downwards, the supporting block contacts the ground firstly, the third supporting column is continuously pressed downwards to drive the supporting block to move towards the first groove, the third supporting column moves downwards at the moment, the hinge rod drives the second sliding block to move in the first sliding groove, the whole supporting plate is unfolded, the supporting block completely enters the first groove, the third supporting column completely unfolds the supporting plate through the hinge rod at the moment, the supporting block is pressed on the ground, the coverage area of the ground is increased, and the stability of the whole device is further increased.
Preferably, the side wall of the first groove and the side wall of the supporting block are both inclined planes, and the angle of the inclined plane side wall of the first groove is greater than that of the supporting block; a second rubber layer is fixedly connected to the side wall of the supporting block; the second rubber layer is hollow; when the device works, in the process of pressing down the supporting block to perform the first groove, the inclined plane angle of the supporting block is smaller than that of the first groove, because the side wall of the supporting block is provided with the second rubber layer, in the entering process, the distance between the supporting block and the side wall of the first groove is reduced, the second rubber layer is extruded until the supporting block completely enters the first groove, the side wall of the supporting block props against the side wall of the first groove through the second rubber layer at the moment, the second rubber layer has a buffer function, so that the whole device slowly rises, and because the inclined plane angles are different, when the supporting force is applied to the ground, the supporting block is supporting sharing force, the concentration of the supporting force is reduced, the damage to the ground is prevented, in the process of pressing down the supporting block, the gap between the supporting block and the first groove is larger at the bottom end of the third supporting column, the inside of the second rubber layer is hollow, the top end, the gas enters the non-compressed part of the second rubber layer to make the second rubber layer expand and fill the gap.
Preferably, the top end of the supporting block is provided with a guide sleeve; a guide post is fixedly connected to the side wall of the top end of the first groove; the guide sleeve and the guide pillar are both square; the guide post is connected in the guide sleeve in a sliding manner; when the device is in work, the supporting block is fixedly connected into the first groove through the spring, the supporting block can shake in the first groove in the moving process of the whole device to generate noise, and when the whole device needs to be fixed, the spring can be dislocated due to long-time shaking, so that the clamping condition of the fixing device can be caused.
Preferably, a group of second grooves is formed in the side wall of the bottom end of the first sliding chute; an arc-shaped plate is fixedly connected to the side wall of the bottom end of the second groove through a spring; the arc-shaped plate is connected to the inner wall of the second groove in a sealing and sliding manner; the top end of the arc-shaped plate extends into the first sliding groove; the bottom end of the second sliding block is an arc-shaped end; a third through hole is formed in the side wall of the bottom end of the second groove; the third through hole is communicated with the outside of the supporting plate; when the device works, under the condition that solid particles exist on the ground, the supporting plate is unfolded and pressed downwards, so that the whole device is prone to being uneven.
The invention has the following beneficial effects:
1. according to the movable CT device for radiotherapy, the motor is turned on to drive the first supporting column to extend out of the device through the first through hole, the whole device is lifted by downward pushing of the first supporting column, the roller is separated from the ground, the first supporting column supports the whole CT device, the influence of the roller on the fixation of the whole device is avoided, and when the device needs to be moved, the motor is reversed, the supporting column is retracted into the cavity, the roller is contacted with the ground again, and the whole device is pushed to move.
2. According to the movable CT device for radiotherapy, the height of the first support column can be adjusted by adjusting the distance from the third support column to the second support column, and the whole device is still at the horizontal height under the condition of uneven ground by manually adjusting the height of the first support column, so that the detection stability of the device is ensured.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is an enlarged view of area C of FIG. 4;
FIG. 6 is an enlarged view of region D of FIG. 5;
FIG. 7 is an enlarged view of area E of FIG. 5;
FIG. 8 is an enlarged view of area F of FIG. 6;
in the figure: 1. scanning a ring; 2. a fixed mount; 21. a universal wheel; 3. an electric motor; 31. a first rotating shaft; 32. a first bevel gear; 33. a second bevel gear; 34. a second rotating shaft; 35. a third bevel gear; 36. a fourth bevel gear; 37. a first lead screw; 38. a first slider; 39. a first connecting rod; 391. a first support column; 392. a first through hole; 393. a traveler; 394. a through groove; 4. a second support column; 41. a third support column; 42. a thread groove; 43. a threaded post; 44. a square nut; 5. a first annular groove; 51. an annular plate; 52. a second annular groove; 53. a first rubber layer; 6. a first ring cavity; 61. a second through hole; 62. a first cavity; 63. a first push plate; 64. a first push rod; 65. a first platen; 7. a first groove; 71. a support block; 72. a support plate; 73. a first chute; 74. a second slider; 75. a hinged lever; 76. a second rubber layer; 77. a second groove; 78. an arc-shaped plate; 79. a third through hole; 791. a guide post; 792. and (4) guiding a sleeve.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 7, the movable CT apparatus for radiotherapy of the present invention comprises a scan ring 1 and a fixing frame 2; the scanning ring 1 is connected to the fixed frame 2; universal wheels 21 are fixedly connected to four corners of the fixing frame 2; the bottom end of the fixed frame 2 is provided with a cavity; a fixed box is fixedly connected to the side wall of the bottom end of the fixed frame 2; a motor 3 is arranged in the fixed box; the output end of the motor 3 is fixedly connected with a first rotating shaft 31; the first rotating shaft 31 extends into the cavity, and the end part of the first rotating shaft is fixedly connected with a first bevel gear 32; the side walls of the two sides of the cavity are rotatably connected with second rotating shafts 34; the second rotation shaft 34 and the first rotation shaft 31 are perpendicular to each other; a second bevel gear 33 is fixedly connected to the second rotating shaft 34; the first bevel gear 32 and the second bevel gear 33 are meshed with each other; a pair of third bevel gears 35 which are symmetrically distributed is fixedly connected to the second rotating shaft 34; a pair of first lead screws 37 which are symmetrically distributed is fixedly connected to the side wall of the bottom end of the cavity; a fourth bevel gear 36 is fixedly connected to the top end of the first lead screw 37; the third bevel gear 35 and the fourth bevel gear 36 are meshed with each other; the first lead screw 37 is connected with a first sliding block 38 through a nut; the side walls of two sides of the first sliding block 38 are fixedly connected with first connecting rods 39; the bottom end of the first connecting rod 39 is fixedly connected with a first supporting column 391; a first through hole 392 is formed in the position, corresponding to the first support column 391, of the cavity; a through groove 394 is formed in the first connecting rod 39; a sliding column 393 is fixedly connected to the position of the cavity corresponding to the through groove 394; the sliding posts 393 are slidably connected in the through slots 394; in the prior art, the whole moving process of the CT device is realized by moving the roller, then fixing the whole CT device by using the fixed roller, but the roller is in rolling friction on the ground after being fixed, the shaking condition is easy to occur, the detection of the CT device is influenced, and when the CT device needs to be fixed for a long time, the fixing of the roller is easy to be influenced by external factors and can drive the device to move, after the roller is moved to a specified position, the motor 3 is started, the motor 3 rotates to drive the first rotating shaft 31 to rotate, the first rotating shaft 31 rotates to drive the second rotating shaft 34 to rotate through the mutual meshing of the first bevel gear 32 and the second bevel gear 33, the second rotating shaft 34 rotates to drive the third bevel gear 35 to rotate, and the first lead screw 37 is driven to move through the meshing between the third bevel gear 35 and the fourth bevel gear 36, the first lead screw 37 moves to drive the first sliding block 38 to move downwards, the first sliding block 38 moves to drive the first supporting column 391 to extend out of the device through the first through hole 392 through the first connecting rod 39, the whole device is lifted by utilizing the downward pushing of the first supporting column 391, the roller is separated from the ground, the first supporting column 391 is adopted to support the whole CT device, the influence of the roller on the fixation of the whole device is avoided, and when the device needs to be moved, the motor 3 is reversed, the supporting column is contracted back into the cavity, the roller is contacted with the ground again, and the whole device is pushed to move.
As an embodiment of the present invention, the first support column 391 includes a second support column 4 and a third support column 41; the top end of the second supporting column 4 is fixedly connected to the first connecting rod 39, and the bottom end of the second supporting column 4 is provided with a thread groove 42; the top end of the third supporting column 41 is rotatably connected with a threaded column 43; a quadrangular nut 44 is fixedly connected to the threaded column 43; the third supporting column 41 is in threaded connection with the thread groove 42 through a thread column 43; when the device is in operation, when the whole device is fixed under the condition of uneven ground, the condition of instability of the device can occur, the detection effect of the device is influenced, the gravity center of the device is unstable, and the device is prone to toppling over.
As an embodiment of the present invention, a first annular groove 5 is formed on a side wall of a bottom end of the second supporting column 4; the first annular groove 5 surrounds the thread groove 42; the side wall of the top end of the first annular groove 5 is fixedly connected with an annular plate 51 through a spring; the bottom end of the annular plate 51 is fixedly connected with a first rubber layer 53; a second annular groove 52 is formed in the position, corresponding to the first annular groove 5, of the quadrangular nut 44; during operation, generally, disinfection is carried out by using disinfection water in hospitals every day, the sprayed disinfection water contains water vapor, the threaded column 43 is exposed in a water vapor environment for a long time, rusting can occur, the threaded column 43 is blocked, and the height of the first support column 391 cannot be adjusted.
As an embodiment of the present invention, a first annular cavity 6 is provided in the quadrangular nut 44; the first annular cavity 6 is positioned right below the second annular groove 52, the first annular cavity 6 is communicated with the second annular groove 52 through a second through hole 61, and four first cavities 62 are formed in the quadrangular nut 44; the first cavity 62 is opposite to the side wall of the quadrangular nut 44; a first push plate 63 is fixedly connected to the side wall of the first cavity 62 close to the threaded column 43 through a spring; the first push plate 63 is connected in the first cavity 62 in a sealing and sliding manner; a first push rod 64 is fixedly connected to the side wall of the first push plate 63 far away from the threaded column 43; the end part of the first push rod 64 far away from the first push plate 63 extends out of the quadrangular nut 44 and is fixedly connected with a first pressure plate 65; the first cavity 62 is communicated with the first annular cavity 6 through a first hose; during operation, when needing to adjust first support column 391 height, need with the spanner centre gripping on the four corners nut 44 lateral wall, spanner centre gripping in-process can extrude first clamp plate 65 and promote first push pedal 63 inwards to move through first push rod 64 this moment, first push pedal 63 extrudees gas inwards, gas gets into first annular chamber 6 through first hose, can remove the adsorption state to first rubber layer 53 through second through-hole 61, then after rotating four corners nut 44 and adjusting, first push pedal 63 kick-backs under the spring action, adsorb gas in first annular chamber 6, let first annular chamber 6 be in the negative pressure state, tightly adsorb first rubber layer 53 through second through-hole 61, further seal whole screw thread post 43, guarantee the operating condition of screw thread post 43.
As an embodiment of the present invention, the bottom end of the third supporting pillar 41 is provided with a first groove 7; a supporting block 71 is fixedly connected to the side wall of the top end of the first groove 7 through a spring; a supporting plate 72 is hinged to the side wall of the bottom end of the supporting block 71; the supporting plate 72 is provided with a first sliding groove 73; the side wall of the bottom end of the third supporting column 41 is hinged with a hinge rod 75; a second sliding block 74 is hinged to the end of the hinge rod 75 away from the third supporting column 41; the second sliding block 74 is slidably connected in the first sliding groove 73; when the device is required to be fixed, the third support column 41 is pressed downwards, the support block 71 contacts the ground firstly, the third support column 41 is pressed downwards continuously to drive the support block 71 to move into the first groove 7, the third support column 41 moves downwards to drive the second slider 74 to move in the first sliding groove 73 through the hinge rod 75, the whole support plate 72 is unfolded, the support block 71 completely enters the first groove 7, the third support column 41 completely unfolds the support plate 72 through the hinge rod 75 to press on the ground, the coverage area of the ground is increased, and the stability of the device is further increased.
As an embodiment of the present invention, the side wall of the first groove 7 and the side wall of the supporting block 71 are both inclined surfaces, and the angle of the inclined surface side wall of the first groove 7 is greater than the angle of the inclined surface of the supporting block 71; a second rubber layer 76 is fixedly connected to the side wall of the supporting block 71; the second rubber layer 76 is hollow inside; in operation, in the process of pressing down the supporting block 71 to perform the first groove 7, the slope angle of the supporting block 71 is smaller than that of the first groove 7, because the sidewall of the supporting block 71 is provided with the second rubber layer 76, in the entering process, the distance between the supporting block 71 and the sidewall of the first groove 7 becomes smaller, the second rubber layer 76 is pressed until the supporting block 71 completely enters the first groove 7, at this time, the sidewall of the supporting block 71 abuts against the sidewall of the first groove 7 through the second rubber layer 76, the second rubber layer 76 has a buffer function, so that the whole device is raised slowly, and because the slope angles are different, when the supporting force is applied to the ground, the supporting block 71 shares the supporting force, so as to reduce the concentration of the supporting force and prevent the ground from being damaged, and in the process of pressing down the supporting block 71, the gap between the supporting block 71 and the first groove 7 is larger at the bottom end of the third supporting column 41, the invention arranges that the inside of the second, the top end of the second rubber layer 76 is pressed and cushioned, and the gas enters the non-pressed portion of the second rubber layer 76, allowing the second rubber layer 76 to expand and fill the gap.
As an embodiment of the present invention, a guide sleeve 792 is disposed on a top end of the supporting block 71; a guide post 791 is fixedly connected to the side wall of the top end of the first groove 7; the guide sleeve 792 and the guide post 791 are both square; the guide post 791 is slidably connected in the guide sleeve 792; during operation, the supporting block 71 is fixedly connected in the first groove 7 through the spring, the supporting block 71 can shake in the first groove 7 in the moving process of the whole device to generate noise, and when the whole device needs to be fixed, the spring can be dislocated due to long-time shaking, so that the fixing device can be clamped.
As an embodiment of the present invention, a set of second grooves 77 is disposed on a sidewall of a bottom end of the first sliding chute 73; an arc-shaped plate 78 is fixedly connected to the side wall of the bottom end of the second groove 77 through a spring; the arc-shaped plate 78 is connected on the inner wall of the second groove 77 in a sealing and sliding manner; the top end of the arc plate 78 extends into the first sliding groove 73; the bottom end of the second sliding block 74 is an arc end; a third through hole 79 is formed in the side wall of the bottom end of the second groove 77; the third through hole 79 is communicated with the outside of the support plate 72; when the device works, under the condition that solid particles exist on the ground, the supporting plate 72 is unfolded and pressed downwards, so that the whole device is prone to being uneven, the bottom end of the first sliding groove 73 is provided with the second groove 77, when the supporting plate 72 is unfolded, the second sliding block 74 can move towards the direction of the third supporting column 41, in the moving process, the arc-shaped end of the second sliding block 74 can press the arc-shaped plate 78 downwards, the arc-shaped plate 78 presses downwards to extrude air in the second groove 77, air is sprayed through the second through hole 61, the ground contacted with the supporting plate 72 is cleaned, the cleanness of the ground is guaranteed, and the stability of the whole device is further guaranteed.
The working principle is as follows: after the roller is moved to a specified position, the motor 3 is started, the motor 3 rotates to drive the first rotating shaft 31 to rotate, the first rotating shaft 31 rotates to drive the second rotating shaft 34 to rotate through the mutual engagement of the first bevel gear 32 and the second bevel gear 33, the second rotating shaft 34 rotates to drive the third bevel gear 35 to rotate, the first lead screw 37 is driven to move through the engagement between the third bevel gear 35 and the fourth bevel gear 36, the first lead screw 37 moves to drive the first slider 38 to move downwards, the first slider 38 moves to drive the first supporting column 391 to extend out of the device through the first through hole 392 through the first connecting rod 39, the third supporting column 41 is pressed downwards, the supporting block 71 is firstly contacted with the ground, the third supporting column 41 continues to press downwards to drive the supporting block 71 to move towards the first groove 7, at this time, the third supporting column 41 moves downwards to drive the second slider 74 to move in the first sliding groove 73 through the hinge rod 75, the entire support plate 72 is unfolded, and when the support plate 72 is unfolded, the second slider 74 moves toward the third support post 41, and during the movement, the arc-shaped end of the second sliding block 74 presses the arc-shaped plate 78 downwards, the arc-shaped plate 78 presses and extrudes the air in the second groove 77 downwards, the air is sprayed through the second through hole 61, the ground contacted with the supporting plate 72 is cleaned, when the supporting block 71 completely enters the first groove 7, the third supporting column 41 completely expands the supporting plate 72 through the hinge rod 75 and presses on the ground, the whole device is lifted by pushing the first supporting column 391 downwards to enable the roller to be separated from the ground, the first supporting column 391 is adopted to support the whole CT device, the influence of the roller on the fixation of the whole device is avoided, when the device needs to be moved, the motor 3 is reversed, the supporting columns are contracted back into the cavities, the rollers are contacted with the ground again, and the whole device is pushed to move; when the device works, the first support column 391 comprises the second support column 4 and the third support column 41, the third support column 41 is in threaded connection with the threaded groove 42 through the threaded column 43, the threaded column 43 is driven to rotate through rotating the four-corner nut 44, the distance from the third support column 41 to the second support column 4 is adjusted, the height of the first support column 391 can be adjusted, the whole device is still at the horizontal height under the condition that the ground is uneven through manually adjusting the height of the first support column 391, and the detection stability of the heat preservation device is guaranteed.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A movable CT device for radiotherapy is characterized by comprising a scanning ring (1) and a fixed frame (2); the scanning ring (1) is connected to the fixed frame (2); four corners of the fixed frame (2) are fixedly connected with universal wheels (21); the bottom end of the fixed frame (2) is provided with a cavity; a fixed box is fixedly connected to the side wall of the bottom end of the fixed frame (2); a motor (3) is arranged in the fixed box; the output end of the motor (3) is fixedly connected with a first rotating shaft (31); the first rotating shaft (31) extends into the cavity, and the end part of the first rotating shaft is fixedly connected with a first bevel gear (32); the side walls of the two sides of the cavity are rotatably connected with second rotating shafts (34); the second rotation axis (34) and the first rotation axis (31) are perpendicular to each other; a second bevel gear (33) is fixedly connected to the second rotating shaft (34); the first bevel gear (32) and the second bevel gear (33) are meshed with each other; a pair of third bevel gears (35) which are symmetrically distributed is fixedly connected to the second rotating shaft (34); a pair of first lead screws (37) which are symmetrically distributed is fixedly connected to the side wall of the bottom end of the cavity; a fourth bevel gear (36) is fixedly connected to the top end of the first lead screw (37); the third bevel gear (35) and the fourth bevel gear (36) are meshed with each other; the first lead screw (37) is connected with a first sliding block (38) through a nut; the side walls of the two sides of the first sliding block (38) are fixedly connected with first connecting rods (39); the bottom end of the first connecting rod (39) is fixedly connected with a first supporting column (391); a first through hole (392) is formed in the position, relative to the first support column (391), of the cavity; a through groove (394) is formed in the first connecting rod (39); a sliding column (393) is fixedly connected to the position of the cavity corresponding to the through groove (394); the sliding columns (393) are connected in the through grooves (394) in a sliding mode.
2. A mobile CT apparatus for radiotherapy according to claim 1, characterized in that said first support column (391) comprises a second support column (4) and a third support column (41); the top end of the second supporting column (4) is fixedly connected to the first connecting rod (39), and a thread groove (42) is formed in the bottom end of the second supporting column (4); the top end of the third supporting column (41) is rotatably connected with a threaded column (43); a quadrangular nut (44) is fixedly connected to the threaded column (43); the third supporting column (41) is in threaded connection in the threaded groove (42) through a threaded column (43).
3. The movable CT device for radiotherapy according to claim 2, wherein the side wall of the bottom end of the second supporting column (4) is provided with a first annular groove (5); the first annular groove (5) surrounds a thread groove (42); an annular plate (51) is fixedly connected to the side wall of the top end of the first annular groove (5) through a spring; the bottom end of the annular plate (51) is fixedly connected with a first rubber layer (53); and a second annular groove (52) is formed in the position, corresponding to the first annular groove (5), of the quadrangular nut (44).
4. A mobile CT device for radiotherapy according to claim 3, characterized in that said quadrangular nut (44) is provided with a first annular chamber (6); the first annular cavity (6) is positioned under the second annular groove (52), the first annular cavity (6) is communicated with the second annular groove (52) through a second through hole (61), and four first cavities (62) are formed in the four-corner nut (44); the first cavity (62) is opposite to the side wall of the quadrangular nut (44); a first push plate (63) is fixedly connected to the side wall, close to the threaded column (43), of the first cavity (62) through a spring; the first push plate (63) is connected in the first cavity (62) in a sealing and sliding mode; a first push rod (64) is fixedly connected to the side wall, far away from the threaded column (43), of the first push plate (63); the end part of the first push rod (64) far away from the first push plate (63) extends out of the four-corner nut (44) and is fixedly connected with a first pressure plate (65); the first cavity (62) is communicated with the first annular cavity (6) through a first hose.
5. The movable CT device for radiotherapy according to claim 4, wherein the bottom end of the third supporting column (41) is provided with a first groove (7); a supporting block (71) is fixedly connected to the side wall of the top end of the first groove (7) through a spring; a supporting plate (72) is hinged to the side wall of the bottom end of the supporting block (71); a first sliding groove (73) is formed in the supporting plate (72); the side wall of the bottom end of the third supporting column (41) is hinged with a hinge rod (75); a second sliding block (74) is hinged to the end part, away from the third supporting column (41), of the hinge rod (75); the second sliding block (74) is connected in the first sliding groove (73) in a sliding mode.
6. The movable CT apparatus for radiotherapy according to claim 5, wherein the side walls of the first groove (7) and the side walls of the supporting block (71) are inclined planes, and the angle of the inclined side wall of the first groove (7) is larger than that of the supporting block (71); a second rubber layer (76) is fixedly connected to the side wall of the supporting block (71); the second rubber layer (76) is hollow inside.
7. The movable CT device for radiotherapy according to claim 6, wherein a guide sleeve (792) is arranged at the top end of the supporting block (71); a guide post (791) is fixedly connected to the side wall of the top end of the first groove (7); the guide sleeve (792) and the guide pillar (791) are both square; the guide post (791) is connected in the guide sleeve (792) in a sliding mode.
8. The movable CT apparatus for radiotherapy according to claim 7, wherein a set of second grooves (77) is formed on the side wall of the bottom end of the first sliding chute (73); an arc-shaped plate (78) is fixedly connected to the side wall of the bottom end of the second groove (77) through a spring; the arc-shaped plate (78) is connected to the inner wall of the second groove (77) in a sealing and sliding manner; the top end of the arc-shaped plate (78) extends into the first sliding groove (73); the bottom end of the second sliding block (74) is an arc-shaped end; a third through hole (79) is formed in the side wall of the bottom end of the second groove (77); the third through hole (79) is communicated with the outside of the support plate (72).
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| CN202011553516.0A CN112675441B (en) | 2020-12-24 | 2020-12-24 | Portable CT device for radiotherapy |
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| CN202011553516.0A CN112675441B (en) | 2020-12-24 | 2020-12-24 | Portable CT device for radiotherapy |
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| CN112675441B CN112675441B (en) | 2022-09-27 |
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| CN112675441B (en) | 2022-09-27 |
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