CN111759336A - Automatic opening and closing device for O-shaped arm type CT and control method thereof - Google Patents
Automatic opening and closing device for O-shaped arm type CT and control method thereof Download PDFInfo
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- A—HUMAN NECESSITIES
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Abstract
The invention discloses an automatic opening and closing device for an O-shaped arm type CT (computed tomography) and a working method thereof, wherein the device comprises a main frame, a wire winding and unwinding assembly, an automatic opening and closing assembly and a detection assembly; the main frame is of a main structure of the O-shaped arm type CT and is used for fixedly installing the wire retracting assembly, the automatic opening and closing assembly and the detection assembly, the wire retracting assembly is used for controlling the opening and closing of the automatic opening and closing assembly, and the detection assembly is used for detecting the opening and closing state of the automatic opening and closing assembly.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an automatic opening and closing device for O-shaped arm type CT and a control method thereof.
Background
In recent years, with the rapid development of the field of medical equipment, novel innovative and intelligent high-end medical equipment is continuously emerging, modern orthopedic surgery is developed towards the direction of minimal invasion, safety and conformity with biological concepts, and an O-shaped arm 3D intraoperative image navigation system is the high-end medical equipment appearing in recent years. The O-shaped arm type CT can quickly provide a three-dimensional image of an operation position in an operation, helps a doctor to perform the operation efficiently and safely, reduces the risk and complications of the spinal surgery, reduces the radiation exposure of the doctor and a patient, and improves the safety of the doctor and the patient.
Compared with the traditional CT, the O-shaped arm type CT device provides a truly movable practical solution taking a patient as a center for the radiology medicine, avoids the condition that the patient must enter a fixed orifice by using a head or a foot, can realize flexible scanning examination of the patient from multiple directions, and enables the spine surgery to be performed more conveniently and safely. Taking the operation of placing the spinal pedicle screw as an example, in order to ensure that the posture of a patient is unchanged, the pose of the O-shaped arm type CT needs to be continuously adjusted so as to obtain a more comprehensive three-dimensional image of the surgical site of the patient and guide a doctor to perform the surgical operation, and in the process, the opening of the O-shaped arm type CT equipment needs to be opened and closed for multiple times. Therefore, a safe and rapid automatic opening and closing means for the O-shaped arm type CT opening is urgently needed, so that the scanning waiting time is reduced, and the treatment speed is increased.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an automatic opening and closing device for an O-shaped arm type CT and a control method thereof, which can safely and quickly realize the automatic opening and closing of an opening of a CT device.
In order to achieve the purpose, the invention adopts the following technical scheme: an automatic opening and closing device for an O-shaped arm type CT comprises a main frame, a wire winding and unwinding assembly, an automatic opening and closing assembly and a detection assembly;
the main frame is of a main body structure of the O-shaped arm type CT and is used for fixedly mounting a wire retracting and releasing assembly, an automatic opening and closing assembly and a detection assembly;
the winding and unwinding assembly is used for controlling the opening and closing of the automatic opening and closing assembly, the winding and unwinding assembly comprises a motor mounting seat, a motor, a double-output-shaft speed reducer, a left winding shaft, a right winding shaft, a winder, a guide rod, an electric clutch, a first steel wire rope locking buckle, a loop bar and a ratchet claw, the motor mounting seat is fixedly mounted on the main frame, a motor output shaft is connected with the double-output-shaft speed reducer and fixedly mounted on the motor mounting seat through a connection part, the left winding shaft is directly connected with the left output shaft of the double-output-shaft speed reducer, the right winding shaft is connected with the right output shaft of the double-output-shaft speed reducer through the electric clutch, spiral wire grooves are formed in the left winding shaft and the right winding shaft and are respectively meshed with the winder, the winders can move left and right back and forth along the guide rod fixedly mounted on the motor mounting seat along with the rotation of the left winding shaft and the, the loop bar is fixedly arranged on the left winding shaft, and the ratchet wheel claw is fixedly arranged on the main frame and connected with the loop bar;
the automatic opening and closing assembly is used for realizing automatic opening and closing of an O-shaped arm type CT and comprises a first air spring set, an arc-shaped slide rail, a rocker arm line guide wheel set, a first side door line guide wheel set, a second side door line guide wheel set, a conical groove, a rocker arm, a guide wheel, a rocker arm steel wire rope, a second steel wire rope locking buckle, an upper guide rail set, a lower guide rail set, an upper L-shaped frame, a lower L-shaped frame, a first baffle plate, a second air spring set, a second baffle plate, a left side door, a right side door, an electric bomb group, an electric contact group, a main steel wire rope, a three-way deconcentrator, a two-way deconcentrator, a third side door line guide wheel set, a third side steel wire rope locking buckle, an upper auxiliary steel wire rope, a fourth steel wire rope locking buckle, a lower auxiliary steel wire rope, a first air spring set, an arc-shaped slide rail, a rocker arm line guide wheel set, a first, the rocker arm moves along the arc-shaped slide rail through guide wheels arranged on the left side and the right side, one end of a rocker arm steel wire rope is fixed on a first steel wire rope locking buckle at the end part of the left winding shaft, the other end of the rocker arm steel wire rope is fixed on a second steel wire rope locking buckle at the upper side of the rocker arm through the left winding shaft, a winder and a rocker arm wire guide wheel group, an upper guide rail group and a lower guide rail group are respectively and fixedly arranged at the upper side and the lower side of the rocker arm and are connected with an upper L-shaped frame and a lower L-shaped frame through a slide block on the rocker arm, first blocking pieces are arranged at the left sides of the upper L-shaped frame and the lower L-shaped frame, a second air spring group is fixedly arranged under the upper guide rail group and is connected with the upper L-shaped frame, a second blocking piece is fixedly arranged at the lower side of the rocker arm, a left side door and a right side door, the other end of the rocker arm sequentially passes through a right winding shaft, a winder, a first side door wire guide wheel group, a three-way deconcentrator, a third side door wire guide wheel group in the middle of the rocker arm and a two-way deconcentrator and is fixed on a fourth steel wire rope locking buckle on the left side of the lower L-shaped frame, an upper auxiliary steel wire rope is separated from the three-way deconcentrator and is respectively fixed on the third steel wire rope locking buckles on the two sides of the upper L-shaped frame, and a lower auxiliary steel wire rope is separated from the two-way deconcentrator and is fixed on a fourth steel wire rope locking buckle;
the detection assembly is used for detecting the opening and closing state of the automatic opening and closing assembly and comprises a rocker zero photoelectric switch, a rocker final photoelectric switch, a first micro switch group and a second micro switch group, wherein the rocker zero photoelectric switch is fixedly arranged in the middle of the upper end of a C-shaped opening of the main frame, and the rocker final photoelectric switch is fixedly arranged in the middle of the lower end of the C-shaped opening of the main frame and used for detecting the opening and closing state of an O-shaped arm type CT; the first micro switch group and the second micro switch group are respectively provided with two, the two first micro switch groups are distributed on the left side and the right side of the upper end of the C-shaped opening of the main frame, and the two second micro switch groups are distributed on the left side and the right side of the lower end of the C-shaped opening of the main frame and are used for detecting the opening and closing states of the left side door and the right side door.
Furthermore, the wire winding and unwinding assembly controls the on-off of the electric clutch, so that the left winding shaft and the right winding shaft can complete two actions of step-by-step and synchronization, when the O-shaped arm is opened, the left door and the right door are opened firstly, then the left door and the right door move upwards along the arc-shaped slide rail along with the rocker arm, when the O-shaped arm is closed, the left door and the right door move downwards along the arc-shaped slide rail along with the rocker arm, and after the rocker arm reaches the final position, the left door and the right door are closed; when the switchboard is powered off, the loop bar penetrates through the ratchet wheel clamping jaw to be installed on the left winding shaft, the rocker arm can move upwards along the arc-shaped sliding rail by using the wrench, the rocker arm is prevented from moving in the opposite direction, and safety is guaranteed.
Further, under O type arm-type CT closed state, when left side door and right side door were closed, electrical contact group and electrical shrapnel group contacted, the circular lamp area switch-on the main frame shows bulb tube position, and when left side door and right side door were opened, electrical contact group broke away from with electrical shrapnel group, and the circular lamp area on the main frame was disconnected to the break-make electricity state in control lamp area when realizing O type arm switching simultaneously.
Further, the right sides of the upper L-shaped frame and the lower L-shaped frame are provided with torsion spring buckles, each torsion spring buckle comprises an engaging block, a fixed block and a torsion spring, the fixed block is fixed with the right side door, and the engaging block is connected with the fixed block through the torsion spring;
a main frame guide rail is arranged on the inner side of the main frame, an outer main frame gear ring is arranged on the main frame guide rail, and the outer main frame gear ring can slide along the main frame guide rail and is relatively fixed with the X-ray source and the detector assembly;
the right door guide rail is arranged on the inner side of the right door, a right door outer gear ring is arranged on the right door guide rail, and the right door outer gear ring can slide along the right door guide rail;
when the left door and the right door are opened, the lower part of the meshing block is meshed with the outer gear ring of the right door under the action of the torsion spring, and the right door drives the torsion spring buckle to act simultaneously and drives the outer gear ring of the right door through the meshing block, so that the outer gear ring of the right door is separated from the outer gear ring of the main frame;
when the left side door and the right side door are closed, the upper portion of the meshing block is abutted by the supporting columns on the main frame, the meshing block is separated from the right side door outer gear ring and is in contact with the first micro switch group and the second micro switch group, the right side door outer gear ring is pushed through the right side door, so that the right side door outer gear ring is spliced with the main frame outer gear ring to form a closed gear ring, meanwhile, the right side door guide rail and the main frame guide rail are spliced to form a closed track, and the closed gear ring can freely rotate along the closed track.
A control method of an automatic opening and closing device for an O-shaped arm type CT is characterized in that: the method comprises the following steps:
a) when the O-shaped arm type CT is in an open state, the rocker arm, the left side door and the right side door are arranged on the upper side of the C-shaped opening of the main frame, and the second stop plate is positioned at the detection groove of the rocker arm zero photoelectric switch;
b) when the O-shaped arm type CT is closed, the electric clutch is powered off, the left winding shaft rotates to pay off, the rocker wire rope is loosened, the rocker arm moves downwards along the arc-shaped slide rail under the action of self gravity after the first air spring group extends out to push the rocker arm out of the initial position;
c) the left side door and the right side door move downwards under the driving of the rocker arm, the right winding shaft is paid off, when the second blocking piece is detected by the rocker arm final position photoelectric switch, the rocker arm reaches the position of the conical groove, the left winding shaft continues to rotate at the moment to release the rocker arm steel wire rope for a certain distance, and the O-shaped arm type CT is in a closed state at the moment;
d) the electric switch is powered on in an ionization mode, the right winding shaft is used for rotatably winding up the wire, the main steel wire rope of the side door is tightened, the left winding shaft is used for rotatably winding up the wire, the left side door and the right side door are driven by the upper auxiliary steel wire rope and the lower auxiliary steel wire rope to be closed towards the center along the upper guide rail group and the lower guide rail group, when the left side door and the right side door are closed, the first stop piece and the torsion spring buckle can jointly trigger the first micro switch group and the second micro switch group, when electric signals of the first micro switch group and the second micro switch group are detected, the left side door and the right side door are closed, meanwhile, the rocker;
e) when the O-shaped arm type CT is opened, the ionization closing and electrifying are carried out, the right winding shaft rotates to pay off, the main steel wire rope of the side door, the upper auxiliary steel wire rope and the lower auxiliary steel wire rope are loosened, the left side door and the right side door are completely opened towards two sides of the center under the action of the second gas spring set, the meshing block is meshed with the outer gear ring of the right side door under the action of the torsion spring, then the electric clutch and the power off are carried out, the left winding shaft rotates to take up wires, after the rocker arm steel wire rope is tightened up, the rocker arm is separated from the conical groove, the second baffle leaves the final position photoelectric switch detection groove of the rocker arm, the ionization closing and electrifying are carried out at the same time, the right winding shaft and the left winding shaft rotate to take up wires at the same time, the rocker arm moves upwards along the arc-shaped sliding rail, the left side.
Has the advantages that: the invention has reasonable structure and simple operation, realizes the simultaneous control of the rocker arm and the side door through a single motor, saves cost, can safely and quickly realize the automatic opening and closing of the opening of the CT equipment, reduces the scanning waiting time, improves the treatment speed, saves the CT installation space so as to reduce the overall volume of the CT, provides a manual control access port for the complete machine power failure and is easy to maintain.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an automatic opening/closing device for an O-arm CT;
FIG. 2 is a schematic view of a take-up and pay-off assembly;
FIG. 3 is a first schematic view of the automatic opening/closing assembly structure and the wire rope path;
FIG. 4 is a second schematic diagram of the structure of the automatic opening and closing assembly and the path of the steel wire rope;
FIG. 5 is a third schematic view of the automatic opening and closing assembly structure and the wire rope path;
FIG. 6 is a schematic view of a detection assembly;
FIG. 7 is a sectional view of the torsion spring fastener structure;
FIG. 8 is a schematic view of the state of the torsion spring fastener when the right side door is opened;
FIG. 9 is a schematic view of the state of the torsion spring buckle when the right door is closed;
FIG. 10 is a schematic view showing the relative positions of the torsion spring and the gear on the main frame when the right door is closed;
FIG. 11 is a schematic view showing a state in which an outer gear ring of the right door is engaged with an outer gear ring of the main frame when the right door is closed;
fig. 12 is a schematic diagram of a bi-directional splitter connected to a three-directional splitter.
The specific implementation mode is as follows:
the invention is further explained below with reference to the drawings.
As shown in fig. 1, the automatic opening and closing device for an O-arm CT of the present invention includes a main frame 1, a wire winding and unwinding assembly 2, an automatic opening and closing assembly 3, and a detection assembly 4.
The main frame 1 is of a main structure of an O-shaped arm type CT, is in a C-shaped opening shape and is used for fixedly mounting a take-up and pay-off assembly 2, an automatic opening and closing assembly 3 and a detection assembly 4.
As shown in fig. 2, the wire retracting and releasing assembly 2 is used for controlling the opening and closing of the automatic opening and closing assembly 3, the wire retracting and releasing assembly 2 comprises a motor mounting seat 201, a motor 202, a double-output shaft reducer 203, a left winding shaft 204, a right winding shaft 205, a winder 206, a guide rod 207, an electric clutch 208, a first steel wire rope locking buckle 209, a loop bar 210 and a ratchet pawl 211, the motor mounting seat 201 is fixedly mounted on the main frame 1, an output shaft of the motor 202 is connected with the double-output shaft reducer 203 and fixedly mounted on the motor mounting seat 201, the left winding shaft 204 is directly connected with a left output shaft of the double-output shaft reducer 203, the right winding shaft 205 is connected with a right output shaft of the double-output shaft reducer 203 through the electric clutch 208, the left winding shaft 204 and the right winding shaft 205 are provided with spiral grooves and respectively engaged with the winder 206, the winders 206 can move left and right along the guide rod 207 fixedly mounted on the motor mounting seat 201 along with the rotation of the left winding, the end parts of the left winding shaft 204 and the right winding shaft 205 are both provided with a first steel wire rope locking buckle 209, a loop bar 210 is fixedly arranged on the left winding shaft 204, and a ratchet pawl 211 is fixedly arranged on the main frame 1 and is connected with the loop bar 210.
As shown in fig. 3 to 6, the automatic opening and closing assembly 3 is configured to realize automatic opening and closing of an O-arm CT, and the automatic opening and closing assembly 3 includes a first air spring set 301, an arc-shaped slide rail 302, a rocker line guide wheel set 303, a first side door line guide wheel set 304, a second side door line guide wheel set 305, a tapered groove 306, a rocker arm 307, a guide wheel 308, a rocker line 309, a second line lock buckle 310, an upper rail set 311, a lower rail set 312, an upper L-shaped frame 313, a lower L-shaped frame 314, a first blocking plate 315, a second air spring set 317, a second blocking plate 318, a left side door 319, a right side door 320, an electrical spring set 321, an electrical contact set 322, a side door main line 323, a three-way splitter 324, a two-way splitter 325, a third side door line guide wheel set 326, a third line lock buckle 327, an upper auxiliary line 328, a fourth line lock buckle 329, and a lower auxiliary line.
A first air spring set 301, an arc-shaped sliding rail 302, a rocker line guide wheel set 303, a first side door line guide wheel set 304, a second side door line guide wheel set 305, a taper groove 306 and an electric spring plate set 321 are fixedly arranged on the main frame 1, the rocker 307 moves along the arc-shaped sliding rail 302 through guide wheels 308 arranged on the left side and the right side, one end of a rocker steel wire rope 309 is fixed on a first steel wire rope locking buckle 209 at the end part of the right winding shaft 205, one end of the rocker steel wire rope is fixed on a second steel wire rope locking buckle 310 at the upper side of the rocker 307 through the right winding shaft 205, a winder 206 and the rocker line guide wheel set 303, an upper guide rail set 311 and a lower guide rail set 312 are respectively and fixedly arranged at the upper side and the lower side of the rocker 307 and are connected with an upper L-shaped frame 313 and a lower L-shaped frame 314 through sliders arranged on the rocker, a first baffle 315 is arranged at the left sides of the upper L-shaped frame 313 and, the second baffle plate 318 is fixedly arranged at the lower side of the rocker arm 307, the left side door 319 and the right side door 320 are fixedly arranged on the upper L-shaped frame 313 and the lower L-shaped frame 314, the electrical contact group 322 is respectively fixed at the upper sides of the left side door 319 and the right side door 320, one end of a main steel wire rope 323 of the side door is fixed on a first steel wire rope locking buckle 209 at the end part of the left winding shaft 204, the other end of the main steel wire rope 323 of the side door sequentially passes through the left winding shaft 204, the winder 206 and the first, the three-way wire divider 324, the third side door wire guide wheel group 326 in the middle of the rocker arm 307 and the two-way wire divider 325 are fixed on a fourth steel wire rope locking buckle 329 on the left side of the lower L-shaped frame 314, the upper auxiliary steel wire rope 328 is separated from the three-way wire divider 324 and respectively fixed on third steel wire rope locking buckles 327 on two sides of the upper L-shaped frame 313, and the lower auxiliary steel wire rope 330 is separated from the two-way wire divider 325 and fixed on the fourth steel wire rope locking buckle 329 on the right side of the lower L-shaped frame 314.
As shown in fig. 12, the main steel cable 323 of the side door passes through the through holes of the three-way splitter 324 and the two-way splitter 325 and is fixed to the three-way splitter 324 and the two-way splitter 325 by the fastening screws at the bottom, the upper auxiliary steel cable 328 has two through holes passing through the two sides of the three-way splitter 324, one end of the upper auxiliary steel cable is fixed to the three-way splitter 324 by the fastening screws at the bottom, the other end of the upper auxiliary steel cable is fixed to the third steel cable locking buckle 327, the lower auxiliary steel cable 330 passes through the through hole at one side of the two-way splitter 325, one end of the upper auxiliary steel cable is fixed to the two-way splitter 325 by the fastening screws at the bottom, the other end of the upper auxiliary steel cable is fixed to the fourth steel cable locking buckle 329, when the left door 319 and the right door 320 are opened and closed, the three-way splitter 324 and the two-way splitter 325 are kept stationary relative to the main steel cable 323 of the side door and move along 330 are tightened and loosened to open and close the left door 319 and the right door 320.
In addition, when the rocker arm 307 drives the left door 319 and the right door 320 to move downward, the main wire rope 323 of the side door between the first side door line guide wheel group 304 and the third side door line guide wheel group 326 falls into the guide groove of the second side door line guide wheel group 305, and the second side door line guide wheel group 305 plays a role in transition connection between the first side door line guide wheel group 304 and the third side door line guide wheel group 326 when the O-shaped arm CT is opened and closed.
As shown in fig. 6, the detecting assembly 4 is configured to detect an open/close state of the automatic opening/closing assembly 3, and includes a rocker zero position photoelectric switch 401, a rocker final position photoelectric switch 402, a first micro switch set 403, and a second micro switch set 404, where the rocker zero position photoelectric switch 401 is fixedly installed in the middle of the upper end of the main frame 1C-shaped opening, and the rocker final position photoelectric switch 402 is fixedly installed in the middle of the lower end of the main frame 1C-shaped opening and configured to detect an open/close state of an O-arm CT; the number of the first micro switch sets 403 and the number of the second micro switch sets 404 are two, the two first micro switch sets 403 are distributed on the left side and the right side of the upper end of the main frame 1C-shaped opening, and the two second micro switch sets 404 are distributed on the left side and the right side of the lower end of the main frame 1C-shaped opening and used for detecting the opening and closing states of the left side door 319 and the right side door 320.
The wire winding and unwinding assembly 2 controls the on-off of the electric clutch 208, so that the left winding shaft 204 and the right winding shaft 205 can complete two actions of step-by-step and synchronization, when the O-shaped arm is opened, the left door 319 and the right door 320 are opened firstly, then the left door 319 and the right door 320 move upwards along the arc-shaped sliding rail 302 along with the rocker arm 307, when the O-shaped arm is closed, the left door 319 and the right door 320 move downwards along the arc-shaped sliding rail 302 along with the rocker arm 307, and after the rocker arm 307 reaches the final position, the left door 319 and the right door 320 are closed; when the switchboard is powered off, the loop bar 210 penetrates through the ratchet wheel claw 211 and is installed on the left winding shaft 204, the rocker arm 307 can move upwards along the arc-shaped sliding rail 302 by using a wrench, the rocker arm 307 is prevented from moving in the opposite direction, and safety is guaranteed.
When the left side door 319 and the right side door 320 are closed, the electrical contact group 322 is in contact with the electrical spring sheet group 321, the annular lamp strip on the main frame 1 is connected, the position of the bulb tube is displayed, when the left side door 319 and the right side door 320 are opened, the electrical contact group 322 is separated from the electrical spring sheet group 321, the annular lamp strip on the main frame 1 is disconnected, and therefore the on-off state of the lamp strip is controlled when the O-shaped arm is opened and closed.
As shown in fig. 7-11, a torsion spring buckle 316 is mounted on the right sides of the upper L-shaped frame 313 and the lower L-shaped frame 314, the torsion spring buckle 316 includes an engaging block 3161, a fixing block 3162, and a torsion spring 3163, the fixing block 3162 is fixed to the right door 320, and the engaging block 3161 is connected to the fixing block 3162 through the torsion spring 3163;
a main frame guide rail 103 is arranged on the inner side of the main frame 1, a main frame outer gear ring 101 is arranged on the main frame guide rail 103, and the main frame outer gear ring 101 can slide along the main frame guide rail 103 and is relatively fixed with the X-ray source and detector assembly;
a right door guide rail 332 is arranged on the inner side of the right door 320, a right door outer gear ring 331 is arranged on the right door guide rail 332, and the right door outer gear ring 331 can slide along the right door guide rail 332;
when the left door 319 and the right door 320 are opened, the lower part of the meshing block 3161 is meshed with the right door external gear ring 331 under the action of the torsion spring 3163, and at the moment, the right door 320 drives the torsion spring buckle 316 to act simultaneously and drives the right door external gear ring 331 through the meshing block 3161, so that the right door external gear ring 331 is separated from the main frame external gear ring 101;
when the left door 319 and the right door 320 are closed, the upper part of the meshing block 3161 is propped against the supporting column 102 on the main frame 1, the meshing block 3161 is separated from the right door outer gear ring 331 and is in contact with the first micro switch group 403 and the second micro switch group 404, the right door outer gear ring 331 is pushed by the right door 320, the right door outer gear ring 331 is spliced with the main frame outer gear ring 101 to form a closed gear ring, meanwhile, the right door guide rail 332 and the main frame guide rail 103 are spliced to form a closed track, and the closed gear ring can freely rotate along the closed track.
As shown in fig. 11, the closed ring gear is engaged with a transmission gear installed on the main frame 1, the transmission gear is driven by a motor, the transmission gear is driven by the motor, and the transmission gear drives the closed ring gear to freely rotate along the closed track, so as to adjust the angle of the X-ray source and the detector assembly.
On the basis of the embodiment, the motor 202 and the double-output-shaft speed reducer 203 in the take-up and pay-off assembly 2 can be replaced by two motors to respectively carry out synchronous or step-by-step control on the opening and closing of the rocker arm 307, the left door 319 and the right door 320; the rocker arm steel wire rope and the side door main steel wire rope can be replaced by chains, steel belts and the like, and the rocker arm 307, the left side door 319 and the right side door 320 can be opened and closed by winding and unwinding the chains or the steel belts; it is within the scope of the present invention that the second gas spring assembly 317 may be replaced by a motor, an electric cylinder or a pneumatic cylinder to control the opening and closing of the left door 319 and the right door 320.
On the basis of this embodiment, the inner arc surfaces on the two side edges of the rocker arm 307 are processed into racks, and the motor drives the gear to drive the rocker arm to move up and down, so that the opening and closing of the rocker arm 307 can also be realized through the motor 202, the double-output-shaft speed reducer 203 and the rocker-arm steel wire rope in the embodiment.
The invention discloses a control method of an automatic opening and closing device for an O-shaped arm type CT, which comprises the following steps:
a) when the arm type CT is turned on, the rocker arm 307, the left side door 319 and the right side door 320 are on the upper side of the main frame 1C-shaped opening, and at this time, the second stopper 318 on the right side is located at the detection groove of the rocker arm zero position photoelectric switch 401;
b) when the arm type CT is closed, the ionization clutch 208 is powered off, the left winding shaft 204 rotates to pay off, the rocker arm steel wire rope 309 is loosened, the first air spring set 301 extends out to push the rocker arm 307 out of an initial position, and then the rocker arm 307 moves downwards along the arc-shaped slide rail 302 under the action of self gravity;
c) the left door 319 and the right door 320 move downwards under the driving of the rocker arm 307, the right winding shaft 205 is paid off, when the second blocking piece 318 on the left side is detected by the rocker arm final position photoelectric switch 402, the rocker arm 307 reaches the position of the conical groove 306, at the moment, the left winding shaft 204 continues to rotate to release the rocker arm steel wire rope 309 for a certain distance, and at the moment, the O-shaped arm CT is in a closed state;
d) the electric clutch 208 is electrified, the right winding shaft 205 is rotated to take up wires, the main wire rope 323 of the side door is tightened, meanwhile, the left winding shaft 204 is rotated to take up wires, the left side door 319 and the right side door 320 are driven by the upper auxiliary wire rope 328 and the lower auxiliary wire rope 330 to be closed towards the center along the upper guide rail group 311 and the lower guide rail group 312, when the left side door 319 and the right side door 320 are closed, the first baffle plate 315 and the torsion spring buckle 316 can jointly trigger the first micro switch group 403 and the second micro switch group 404, when electric signals of the first micro switch group 403 and the second micro switch group 404 are detected, the left side door 319 and the right side door 320 are closed, meanwhile, the rocker wire rope 309 is tightened, the lamp strip is connected;
e) when the arm type CT is opened, the electric clutch 208 is electrified, the right winding shaft 205 rotates to pay off, the main side door wire rope 323, the upper auxiliary wire rope 328 and the lower auxiliary wire rope 330 are loosened, the left side door 319 and the right side door 320 are completely opened towards the two sides of the center under the action of the second gas spring set 317, the meshing block 3161 is meshed with the outer gear ring 331 of the right side door under the action of the inner torsion spring 3163, then the electric clutch 208 is powered off, the left winding shaft 204 rotates to take up wires, after the rocker arm wire rope 309 is tightened, the rocker arm 307 is separated from the conical groove 306, the second baffle plate 318 leaves the detection groove of the rocker arm final position photoelectric switch 402, at the moment, the electric clutch 208 is electrified, the right winding shaft 205 and the left winding shaft 204 rotate to take up wires simultaneously, the rocker arm 307 moves upwards along the arc-shaped slide rail 302, the left side door 319 and the right side door 320 move upwards simultaneously, when the tail end, at this time, the O-arm CT is in an open state.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides an automatic switching device for O type arm-type CT which characterized in that: comprises a main frame (1), a wire take-up and pay-off component (2), an automatic opening and closing component (3) and a detection component (4);
the main frame (1) is of an O-shaped arm type CT main body structure and is used for fixedly mounting a take-up and pay-off assembly (2), an automatic opening and closing assembly (3) and a detection assembly (4);
the wire collecting and releasing assembly (2) is used for controlling the automatic opening and closing assembly (3) to be opened and closed, the wire collecting and releasing assembly (2) comprises a motor mounting seat (201), a motor (202), a double-output-shaft speed reducer (203), a left winding shaft (204), a right winding shaft (205), a wire winder (206), a guide rod (207), an electric clutch (208), a first steel wire rope locking buckle (209), a sleeve rod (210) and a ratchet clamping jaw (211), the motor mounting seat (201) is fixedly arranged on a main frame (1), an output shaft of the motor (202) is connected with the double-output-shaft speed reducer (203) and fixedly arranged on the motor mounting seat (201), the left winding shaft (204) is directly connected with a left output shaft of the double-output-shaft speed reducer (203), the right winding shaft (205) is connected with a right output shaft of the double-output-shaft speed reducer (203) through the electric clutch (208), and spiral wire grooves are formed in the left winding shaft (, the two wire winders are respectively meshed with one wire winder (206), the wire winders (206) can move left and right back and forth along a guide rod (207) fixedly arranged on a motor mounting seat (201) along with the rotation of a left wire winding shaft (204) and a right wire winding shaft (205), the end parts of the left wire winding shaft (204) and the right wire winding shaft (205) are respectively provided with a first steel wire rope locking buckle (209), a sleeve rod (210) is fixedly arranged on the left wire winding shaft (204), and a ratchet wheel claw (211) is fixedly arranged on a main frame (1) and is connected with the sleeve rod (210);
the automatic opening and closing component (3) is used for realizing automatic opening and closing of an O-shaped arm type CT (computed tomography), and the automatic opening and closing component (3) comprises a first air spring set (301), an arc-shaped sliding rail (302), a rocker arm line guide wheel set (303), a first side door line guide wheel set (304), a second side door line guide wheel set (305), a conical groove (306), a rocker arm (307), a guide wheel (308), a rocker arm steel wire rope (309), a second steel wire rope locking buckle (310), an upper guide rail set (311), a lower guide rail set (312), an upper L-shaped frame (313), a lower L-shaped frame (314), a first baffle plate (315), a second air spring set (317), a second baffle plate (318), a left side door (319), a right side door (320), an electric shrapnel set (321), an electric contact set (322), a side door main steel wire rope (323), a three-way deconcentrator (324), a two-way, A third steel wire rope locking buckle (327), an upper auxiliary steel wire rope (328), a fourth steel wire rope locking buckle (329), a lower auxiliary steel wire rope (330), a first air spring group (301), an arc-shaped slide rail (302), a rocker line guide wheel group (303), a first side door line guide wheel group (304), a second side door line guide wheel group (305), a taper groove (306) and an electric shrapnel group (321) are fixedly arranged on the main frame (1), the rocker arm (307) moves along the arc-shaped slide rail (302) through guide wheels (308) arranged at the left side and the right side, one end of the rocker steel wire rope (309) is fixed on the first steel wire rope locking buckle (209) at the end part of the left winding shaft (204), one end of the rocker steel wire rope (309) is fixed on the second steel wire rope locking buckle (310) at the upper side of the rocker arm (307) through the left winding shaft (204), a winder (206) and the rocker line guide wheel group (303), the upper guide rail, the electric wire rope distribution device is connected with an upper L-shaped frame (313) and a lower L-shaped frame (314) through a sliding block on the electric wire rope distribution device, a first blocking piece (315) is arranged on the left sides of the upper L-shaped frame (313) and the lower L-shaped frame (314), a second gas spring group (317) is fixedly arranged under an upper guide rail group (311) and is connected with the upper L-shaped frame (313), a second blocking piece (318) is fixedly arranged on the lower side of a rocker arm (307), a left side door (319) and a right side door (320) are fixedly arranged on the upper L-shaped frame (313) and the lower L-shaped frame (314), an electric contact group (322) is respectively fixed on the upper sides of the left side door (319) and the right side door (320), one end of a main steel wire rope (323) is fixed on a first steel wire rope locking buckle (209) at the end of a right winding shaft (205), and the other end of the main steel wire rope passes through the right winding shaft (205), a winder (206), a first side door wire guide wheel group (, The bidirectional deconcentrator (325) is fixed on a fourth steel wire rope locking buckle (329) on the left side of the lower L-shaped frame (314), the upper auxiliary steel wire rope (328) is separated from the three-way deconcentrator (324) and is respectively fixed on the third steel wire rope locking buckles (327) on two sides of the upper L-shaped frame (313), and the lower auxiliary steel wire rope (330) is separated from the bidirectional deconcentrator (325) and is fixed on the fourth steel wire rope locking buckle (329) on the right side of the lower L-shaped frame (314);
the detection assembly (4) is used for detecting the opening and closing state of the automatic opening and closing assembly (3) and comprises a rocker arm zero-position photoelectric switch (401), a rocker arm final-position photoelectric switch (402), a first micro switch group (403) and a second micro switch group (404), the rocker arm zero-position photoelectric switch (401) is fixedly installed in the middle of the upper end of a C-shaped opening of the main frame (1), and the rocker arm final-position photoelectric switch (402) is fixedly installed in the middle of the lower end of the C-shaped opening of the main frame (1) and used for detecting the opening and closing state of an O-shaped arm type CT; the first micro switch sets (403) and the second micro switch sets (404) are respectively provided with two, the two first micro switch sets (403) are distributed on the left side and the right side of the upper end of the C-shaped opening of the main frame (1), and the two second micro switch sets (404) are distributed on the left side and the right side of the lower end of the C-shaped opening of the main frame (1) and used for detecting the opening and closing states of the left side door (319) and the right side door (320).
2. The automatic opening and closing device for an O-arm CT of claim 1 wherein: the wire winding and unwinding assembly (2) enables the left winding shaft (204) and the right winding shaft (205) to complete two actions of step-by-step and synchronization by controlling the on-off of the electric clutch (208), so that when the O-shaped arm is opened, the left door (319) and the right door (320) are opened firstly, then the left door (319) and the right door (320) move upwards along the arc-shaped slide rail (302) along with the rocker arm (307), when the O-shaped arm is closed, the left door (319) and the right door (320) move downwards along the arc-shaped slide rail (302) along with the rocker arm (307), and after the rocker arm (307) reaches the final position, the left door (319) and the right door (320) are closed; when the switchboard is powered off, the loop bar (210) penetrates through the ratchet wheel claw (211) to be installed on the left winding shaft (204), the rocker arm (307) can move upwards along the arc-shaped sliding rail (302) by using a wrench, the rocker arm (307) is prevented from moving in the opposite direction, and safety is guaranteed.
3. The automatic opening and closing device for an O-arm CT of claim 2, wherein: under O type arm-type CT closed state, when left side door (319) and right side door (320) were closed, electrical contact group (322) contacted with electric bomb group (321), the circular lamp area switch-on main frame (1), show bulb tube position, when left side door (319) and right side door (320) were opened, electrical contact group (322) broke away from with electric bomb group (321), the circular lamp area disconnection on main frame (1), thereby the on-off electricity state in simultaneous control lamp area when realizing O type arm switching.
4. The automatic opening and closing device for an O-arm CT of claim 3 wherein: the right sides of the upper L-shaped frame (313) and the lower L-shaped frame (314) are provided with a torsion spring buckle (316), the torsion spring buckle (316) comprises an engaging block (3161), a fixed block (3162) and a torsion spring (3163), the fixed block (3162) is fixed with the right side door (320), and the engaging block (3161) is connected with the fixed block (3162) through the torsion spring (3163);
a main frame guide rail (103) is arranged on the inner side of the main frame (1), a main frame outer gear ring (101) is arranged on the main frame guide rail (103), and the main frame outer gear ring (101) can slide along the main frame guide rail (103) and is relatively fixed with the X-ray source and detector assembly;
a right door guide rail (332) is arranged on the inner side of the right door (320), a right door outer gear ring (331) is arranged on the right door guide rail (332), and the right door outer gear ring (331) can slide along the right door guide rail (332);
when the left door (319) and the right door (320) are opened, the lower part of the meshing block (3161) is meshed with the right door outer gear ring (331) under the action of the torsion spring (3163), and at the moment, the right door (320) drives the torsion spring buckle (316) to simultaneously act and drives the right door outer gear ring (331) through the meshing block (3161), so that the right door outer gear ring (331) is separated from the main frame outer gear ring (101);
when the left side door (319) and the right side door (320) are closed, the upper part of the meshing block (3161) is propped against the supporting column (102) on the main frame (1), the meshing block (3161) is separated from the right side door outer gear ring (331) and is in contact with the first micro switch group (403) and the second micro switch group (404), the right side door outer gear ring (331) is pushed through the right side door (320), so that the right side door outer gear ring (331) is spliced with the main frame outer gear ring (101) to form a closed gear ring, meanwhile, the right side door guide rail (332) and the main frame guide rail (103) are spliced to form a closed track, and the closed gear ring can freely rotate along the closed track.
5. The method of claim 4, wherein the method further comprises: the method comprises the following steps:
a) when the O-shaped arm type CT is in an open state, the rocker arm (307), the left side door (319) and the right side door (320) are arranged on the upper side of the C-shaped opening of the main frame (1), and at the moment, the second baffle (318) is positioned at the detection groove of the rocker arm zero photoelectric switch (401);
b) when the O-shaped arm type CT is closed, the electric clutch (208) is powered off, the left winding shaft (204) rotates to pay off, the rocker arm steel wire rope (309) is loosened, the first air spring set (301) extends out to push the rocker arm (307) out of the initial position, and the rocker arm (307) moves downwards along the arc-shaped sliding rail (302) under the action of self gravity;
c) the left door (319) and the right door (320) move downwards under the driving of the rocker arm (307), the right winding shaft (205) is paid off, when the second blocking piece (318) is detected by the rocker arm final position photoelectric switch (402), the rocker arm (307) reaches the position of the conical groove (306), at the moment, the left winding shaft (204) continues to rotate to release the rocker arm steel wire rope (309) for a certain distance, and at the moment, the O-shaped arm type CT is in a closed state;
d) the electric clutch (208) is electrified, the right winding shaft (205) is wound in a rotating mode, the main steel wire rope (323) of the side door is tightened, the left winding shaft (204) is wound in a rotating mode, the left side door (319) and the right side door (320) are closed towards the center along the upper guide rail group (311) and the lower guide rail group (312) under the driving of the upper auxiliary steel wire rope (328) and the lower auxiliary steel wire rope (330), when the left side door and the right side door are closed, the first blocking piece (315) and the torsion spring buckle (316) can trigger the first micro switch group (403) and the second micro switch group (404) together, when electric signals of the first micro switch group (403) and the second micro switch group (404) are detected, the left side door (319) and the right side door (320) are closed, meanwhile, the rocker wire rope (309) is tightened, the lamp strip is connected, and the meshing block (;
e) when the O-shaped arm type CT is opened, the electric clutch (208) is electrified, the right winding shaft (205) rotates to pay off, the main steel wire rope (323) of the side door, the upper auxiliary steel wire rope (328) and the lower auxiliary steel wire rope (330) are loosened, the left side door (319) and the right side door (320) are completely opened towards the two sides of the center under the action of the second gas spring set (317), the meshing block (3161) is meshed with the outer gear ring (331) of the right side door under the action of the torsion spring (3163), then the electric clutch (208) is powered off, the left winding shaft (204) rotates to take up, after the rocker arm steel wire rope (309) is tightened, the rocker arm (307) is separated from the conical groove (306), the second blocking piece (318) is separated from the detection groove of the final position photoelectric switch (402) of the rocker arm, at the moment, the electric clutch (208) is electrified, the right winding shaft (205) and the left winding shaft (204) rotate to take up simultaneously, the rocker arm (307) moves upwards along, when the tail end of the rocker arm (307) abuts against the first gas spring set (301), the second blocking piece (318) is detected by the rocker arm zero photoelectric switch (401), and the O-shaped arm type CT is in an open state.
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| CN111759336B (en) | 2022-12-30 |
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