CN110916698A

CN110916698A - Self-locking CT (computed tomography) rack and vehicle-mounted CT machine

Info

Publication number: CN110916698A
Application number: CN201911121269.4A
Authority: CN
Inventors: 于军; 刘莹
Original assignee: Neusoft Medical Systems Co Ltd
Current assignee: Neusoft Medical Systems Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-03-27
Anticipated expiration: 2039-11-15
Also published as: CN110916698B

Abstract

The application provides a from lock type CT frame and on-vehicle type CT machine, from lock type CT frame is used for on-vehicle type CT machine, and it includes fixed equipment in the main frame of moving vehicle and with main frame rotatable coupling's slope frame, be equipped with the locking control system of adaptation in main frame and the slope frame, locking control system includes key seat, bolt, drive arrangement and position sensor, the key seat set up in the main frame, the bolt set up in slope frame and with the key seat adaptation, drive arrangement set up in the slope frame is used for the drive the bolt is changed between latched position and unblock position, position sensor is used for detecting the locking and the unblock position with definite bolt and key seat of the position of bolt. The self-locking device has the advantages that the self-locking of the inclined rack and the main rack is realized by the locking control system, the structure is simple, the performance is reliable, and the performance of the vehicle-mounted CT machine is favorably improved.

Description

Self-locking CT (computed tomography) rack and vehicle-mounted CT machine

Technical Field

The invention relates to the field of medical equipment, in particular to a self-locking CT (computed tomography) rack and a vehicle-mounted CT machine.

Background

CT belongs to a precise image detection device, and has a relatively strict requirement on the environment, thereby limiting the timeliness and accuracy of doctor diagnosis in many medical practice scenes, such as areas with underdeveloped medical resources, disaster relief and resistance sites, field hospitals, frontier areas, high-end personalized medical services, and the like. Therefore, as a mobile scanning room, the vehicle-mounted mobile CT has unique value.

In order to prevent the damage of the frame, especially the inclined frame, caused in the long-term transportation process, the current solution is that a connecting rod is usually arranged near a rotating shaft and is connected with the inclined part and the frame part through bolts, and the three parts form a stable triangle, so that the protection of the inclined mechanism is realized; the connecting rod has to be manually dismantled after the equipment is installed, which is very inconvenient for the vehicle-mounted CT machine with limited internal operation space.

Therefore, a frame structure with a self-locking function and a simple structure is needed.

Disclosure of Invention

The invention provides a self-locking CT (computed tomography) rack and a vehicle-mounted CT machine.

According to the first aspect of this application, provide a from lock type CT frame for on-vehicle type CT machine, including fixed equipment in the main frame of moving vehicle and with main frame rotatable coupling's slope frame, be equipped with the locking control system of adaptation in main frame and the slope frame, locking control system includes key seat, bolt, drive arrangement and position sensor, the key seat set up in the main frame, the bolt set up in the slope frame and with the key seat adaptation, drive arrangement set up in the slope frame is used for the drive the bolt is changed between latched position and unblock position, position sensor is used for detecting the locking and the unblock position in order to confirm bolt and key seat of the position of bolt.

Further, the position sensor includes a sensing end disposed on the main frame or the tilt frame and a sensed end disposed on the tilt frame or the main frame.

Furthermore, the sensing end is a photoelectric switch, the sensed end is a metal sheet with a slit, and when a light beam of the photoelectric switch passes through the slit of the sensed end, the optimum combination position of the bolt and the pin seat is determined to execute the locking and unlocking procedures.

Furthermore, the inclined rack is provided with a mounting seat, the mounting seat is provided with a first assembly part for accommodating the driving device and a sensor support, the sensor support is provided with a first position sensor and a second position sensor, and the top end of the bolt is provided with a sensor pressure plate which can abut against the first position sensor and the second position sensor.

Further, the center of the sensor pressure plate is provided with an assembling hole, the top end of the bolt penetrates through the assembling hole and is assembled and fixed with the sensor pressure plate through a screw, when the sensor pressure plate is abutted to the first position sensor, the bolt and the pin seat are in an unlocking state, and when the sensor pressure plate is abutted to the second position sensor, the bolt and the pin seat are in a locking state.

Further, be equipped with on the mount pad with the second equipment portion of first equipment portion intercommunication, be equipped with the thread bush in the second equipment portion, the bottom of bolt with the thread bush adaptation forms the screw thread pair, be equipped with connecting screw in the key seat, the bottom of bolt be equipped with connecting screw assorted screw hole.

Furthermore, the driving device is a worm and gear speed reducing motor, a connecting key capable of sliding along the axial direction is arranged in an output hole of the worm and gear speed reducing motor, the connecting key is fixedly assembled with the bolt, a through hole corresponding to the output hole of the worm and gear speed reducing motor is arranged at the top of the mounting seat, and the bolt penetrates through the through hole, the output hole of the motor and the thread sleeve from top to bottom.

Furthermore, a first accommodating part and a second accommodating part which are communicated with each other are arranged on the pin boss, a jacking spring is arranged in the first accommodating part, the connecting screw is arranged in the second accommodating part, the bottom of the connecting screw abuts against the jacking spring, and the connecting screw and the bolt are coaxially arranged.

Further, the sensor bracket comprises a fixing part assembled with the mounting seat and an assembling part perpendicular to the fixing part and arranged above the mounting seat in parallel, and the first position sensor and the second position sensor are arranged on the assembling part in parallel along the axial direction.

Further, the bottom of mount pad is equipped with first inclined plane, the top of key seat be equipped with the second inclined plane of first inclined plane adaptation, when bolt and key seat are in the lock-out state, first inclined plane with the laminating of second inclined plane.

According to a second aspect of the present application, there is provided a vehicle-mounted CT machine comprising the self-locking CT gantry as described above.

According to the technical scheme, the adaptive locking control system is arranged on the main frame and the inclined bracket of the CT machine, so that the inclined frame is automatically locked and unlocked, and the CT machine is simple in structure and reliable in performance.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic perspective view of a self-locking CT gantry according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of an unlocked state of the locking control system according to an embodiment of the present application;

FIG. 3 is a front view of an unlocked state of the locking control system according to an embodiment of the present application;

FIG. 4 is a right side view of an unlocked state of the locking control system of an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of FIG. 4 along direction A-A;

FIG. 6 is a schematic perspective view of a locking state of the locking control system according to an embodiment of the present application;

FIG. 7 is a front view of a lockout condition of the lockout control system of an embodiment of the present application;

FIG. 8 is a right side view of a lockout condition of the lockout control system of an embodiment of the present application;

FIG. 9 is a schematic cross-sectional view of FIG. 8 taken along direction A-A;

FIG. 10 is an enlarged partial schematic view of the position sensor of the present application.

Reference numerals:

self-locking CT machine frame 100

Main frame 1 rotating shaft 10

Tilting frame 2

Through hole 202 of first assembling portion 201 of mounting seat 20

Second assembly 203 threaded sleeve 204 sensor support 21

Holding part 210 assembling part 211 first position sensor 22

Second position sensor 23 sensor platen 24 assembly hole 240

First inclined surface 25

Lock control system 3

Bolt 30 screw hole 301 pin seat 31

The first receiving portion 310 is tightly pressed against the spring 311 and the second receiving portion 312

Second inclined surface 314 driving device 32 of connecting screw 313

Output aperture 320

Connecting key 321 position sensor 33 sensing end 330

Sensed terminal 331

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The following describes a self-locking CT gantry and a vehicle-mounted CT machine in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 to 10, a vehicle-mounted CT machine according to the present invention at least includes a CT main machine and a self-locking CT frame 100. The CT host is provided with a control system, the structural arrangement of the CT host is basically the same as the component arrangement of a conventional CT host, and no special description is given in the application.

Specifically, the self-locking CT machine frame 100 is used for a vehicle-mounted CT machine, and includes a main frame 1 fixedly assembled on a mobile vehicle and an inclined machine frame 2 rotatably connected with the main frame 1, a locking control system 3 adapted to the main frame 1 and the inclined machine frame 2 is provided on the main frame 1 and the inclined machine frame 2, the locking control system 3 includes a pin seat 31, a bolt 30, a driving device 32 and a position sensor 33, the pin seat 31 is provided on the main frame 1, the bolt 30 is provided on the inclined machine frame 2 and adapted to the pin seat 31, the driving device 32 is provided on the inclined machine frame 2 and used for driving the bolt 30 to switch between a locking position and an unlocking position, and the position sensor 33 is used for detecting the position of the bolt 30 so as to determine the locking and unlocking positions of the bolt 30 and the pin seat 31. In the present case, the tilting frame 2 is connected to the main frame 1 by a pivot 10. The rotating shaft 10 is arranged on the main frame 1. The self-locking CT gantry 100 performs the locking and unlocking actions of the tilt gantry 2 under the control command of the control component. The control components of the self-locking CT gantry 100 can communicate with the CT mainframe, and issue commands and inform status to each other. Preferably, the control components of the self-locking CT gantry 100 are fully integrated into the host control system.

In one embodiment, the position sensor 33 includes a sensing end 330 disposed on the main frame 1 and a sensed end 331 disposed on the tilting frame 2. Indeed, the positions of the sensing end 330 and the sensed end 331 can be interchanged. In another embodiment, the sensing end 330 is disposed on the tilting frame 2, and the sensed end 331 is disposed on the main frame 1. Preferably, the sensing terminal 330 is a photoelectric switch, the sensed terminal 331 is a metal plate with a slit, and when a light beam of the photoelectric switch passes through the slit of the sensed terminal 331, it is determined that the latch 30 and the pin seat 31 are at the optimal coupling position to perform the locking and unlocking procedure. Indeed, the position sensor 33 signal may be replaced by another sensor signal with similar functionality inside the CT machine.

The purpose of the position sensor 33 is to determine the optimum engagement position of the bolt 30 with the housing 31, in which engagement position the locking effect is optimum. The locking requires aligning the pin 30 with the keyway 31. Before the bolt 30 is coupled with the pin seat 31, the tilting frame 2 rotates slowly, and when the sensing end 330 of the position sensor 33 detects that the sensed end 331 of the position sensor 33 is in a desired position, which is equivalent to the optimum coupling position of the bolt 30 with the pin seat 31, the tilting frame 2 stops rotating. The bolt 30 is then driven into engagement with the housing 31 to perform the locking action. Preferably, the position sensor 33 is disposed at a position farthest from the rotating shaft 10 in order to improve the positioning accuracy.

Specifically, the inclined frame 2 is provided with a mounting seat 20. The mounting base 20 is provided with a first assembling portion 201 for accommodating the driving device 32 and a sensor holder 21. The mounting seat 20 has a v-21274a-shaped main body including a top wall, a side wall and a bottom wall connected in sequence, and the first assembling portion 201 is surrounded by the top wall, the side wall and the bottom wall to facilitate the assembling of the driving device 32. The sensor bracket 21 is provided with a first position sensor 22 and a second position sensor 23, and the top end of the bolt 30 is provided with a sensor pressure plate 24 which can abut against the first position sensor 22 and the second position sensor 23. The sensor holder 21 is assembled to the side wall. In one embodiment, the sensor bracket 21 includes a holding portion 210 assembled with the mounting seat 20 and an assembling portion 211 perpendicular to the holding portion 210 and disposed above the mounting seat 20 in parallel. The first position sensor 22 and the second position sensor 23 are disposed in parallel in the axial direction on the assembly portion 211. In one embodiment, the holding portion 210 is integrally formed with the assembling portion 211, and the assembling portion 211 is vertically extended from the top end of the holding portion 210. In another embodiment, the holding portion 210 and the assembling portion 211 are assembled separately and perpendicular to each other.

The sensor platen 24 is provided with an assembly hole 240 in the center. The top end of the bolt 30 passes through the assembly hole 240 and is assembled and fixed with the sensor pressure plate 24 through a screw. The sensor pressure plate 24 presses the first position sensor 22 and the second position sensor 23 together to determine the unlocked state and the locked state. Specifically, when the sensor pressure plate 24 abuts against the first position sensor 22, the latch 30 and the pin seat 31 are in an unlocked state; when the sensor pressure plate 24 is pressed against the second position sensor 23, the latch 30 and the pin seat 31 are in a locked state.

The mounting seat 20 is provided with a second assembly portion 203 communicated with the first assembly portion 201. A threaded sleeve 204 is arranged in the second assembling portion 203. The bottom end of the bolt 30 is matched with the threaded sleeve 204 to form a thread pair, and a connecting screw 313 is arranged in the pin seat 31. The bottom end of the bolt 30 is provided with a threaded hole 301 matched with the connecting screw 313 to realize the locking of the bolt and the connecting screw.

The pin boss 31 is provided with a first accommodating portion 310 and a second accommodating portion 312 which are communicated with each other. A jacking spring 311 is arranged in the first accommodating part 310. The connecting screw 313 is disposed in the second accommodating portion 312, a bottom of the connecting screw 313 abuts against the tightening spring 311, and the connecting screw 313 and the plug 30 are coaxially disposed. The shape of the plug 30 and the pin holder 31 in the present application is not limited to a standard cylindrical structure, but may be other relative convex-concave geometries, in which concave-convex parts contact with each other when combined. And will not be described in detail herein.

Before locking, when the bolt 30 and the pin seat 31 are in the optimal combination position, the connecting screw 313 is coaxial with the bolt 30. The connecting screw 313 is jacked up by the jacking spring 311 below the connecting screw, so that the bottom end of the connecting screw 313 is higher than the end surface of the bottom of the pin seat 31, and butt locking of the connecting screw 313 and the bolt 30 is facilitated.

In one embodiment, the drive 32 is a worm gear motor. A connecting key 321 which can slide along the axial direction is arranged in an output hole 320 of the worm gear speed reducing motor. The connecting key 321 is fixedly assembled with the plug pin 30. The top of the mounting base 20 is provided with a through hole 202 corresponding to the output hole 320 of the worm gear speed reduction motor. The bolt 30 passes through the through hole 202, the output hole 320 of the motor and the threaded sleeve 204 from top to bottom and is assembled on the mounting seat. The end of the bolt 30 is provided with a threaded hole 301, and the connecting screw 313 can extend into the threaded hole 301 to be matched with the bolt 30.

The bottom of the mounting seat 20 is provided with a first inclined surface 25. The top of the pin boss 31 is provided with a second inclined surface 314 matched with the first inclined surface 25. When the bolt 30 and the pin seat 31 are in the locked state, the first inclined surface 25 and the second inclined surface 314 abut.

The working principle of the locking control system 3 is as follows: after the sensor pressure plate 24 triggers the first position sensor 22 to receive the locking command, the worm gear speed reducing motor drives the bolt 30 to rotate. The threaded sleeve 204 pushes the plug pin 30 to move towards the pin seat 31, and the connecting key 321 slides along the axial direction while rotating in the output hole 320 of the worm gear speed reducing motor; the plug pin 30 gradually enters the second accommodating part 312, and the connecting screw 313 is screwed into the threaded hole at the end of the plug pin 30 to realize connection; the sensor pressure plate 24 triggers the second position sensor 23, the worm gear speed reducing motor stops rotating, the bolt 30 and the pin seat 31 complete locking, and the CT rack enters a locking state. When the unlocking is needed, the worm and gear speed reducing motor rotates reversely, the bolt 30 moves upwards in a reverse direction, the connecting screw 313 is screwed out from the threaded hole, the whole process is opposite to the locking process, and details are not repeated here. When the sensor pressure plate 24 triggers the first position sensor 22, the latch 30 and the pin seat 31 complete locking and unlocking, and the CT gantry is in an unlocked state. In the present case, the drive 32 must have a self-locking or force-retaining function. Indeed, the driving device 32 may also use a cylinder mechanism or a screw mechanism with a lead angle smaller than the friction angle, which is not described in detail in this application.

The self-locking method of the self-locking CT machine frame 100 comprises the following steps:

1. the CT host computer is shut down, and a control system of the host computer sends a shutdown locking command;

2. a control component of the CT frame receives a shutdown locking command sent by a control system of the host computer and sends a driving signal;

3. the inclined rack rotates, and after the detection end of the position sensor detects the detection end of the position sensor, the inclined rack stops rotating;

4. the control component of the CT frame sends out a locking actuating signal to drive the bolt and the pin seat to approach, contact and combine, and then sends out a combination completion signal;

5. the control component of the inclined frame senses a signal that the combination of the driving bolt and the pin seat is completed, interrupts a locking actuating signal and sends a locking completion signal;

6. the CT host computer receives the locking completion signal and continues to complete the rest actions of shutdown.

The method for unlocking the self-locking CT machine frame comprises the following execution steps:

1. starting up the CT host computer and sending a starting-up unlocking command;

2. the control assembly of the inclined rack receives the starting unlocking command and sends an unlocking actuating signal to drive the bolt and the pin seat to separate; sending a separation completion signal after the separation is completed;

3. the control component of the inclined frame senses a separation completion signal, interrupts an unlocking actuation signal and sends an unlocking completion signal;

4. and the CT host computer receives the unlocking completion signal and enters a standby state.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A self-locking CT frame used for a vehicle-mounted CT machine is characterized by comprising a main frame (1) fixedly assembled on a moving vehicle and an inclined frame (2) rotatably connected with the main frame (1), the main frame (1) and the inclined frame (2) are provided with adaptive locking control systems (3), the locking control system (3) comprises a pin seat (31), a bolt (30), a driving device (32) and a position sensor (33), the pin seat (31) is arranged on the main frame (1), the bolt (30) is arranged on the inclined frame (2) and is matched with the pin seat (31), the driving device (32) is arranged on the inclined frame (2) and used for driving the bolt (30) to switch between a locking position and an unlocking position, the position sensor (33) is used for detecting the position of the bolt (30) so as to determine the locking and unlocking positions of the bolt (30) and the pin seat (31).

2. Self-locking CT gantry according to claim 1, characterized in that the position sensor (33) comprises a sensing end (330) arranged at the main frame (1) or tilt frame (2) and a sensed end (331) arranged at the tilt frame (2) or main frame (1).

3. The self-locking CT gantry of claim 2, wherein the sensing terminal (330) is a photo switch, the sensed terminal (331) is a metal plate with a slit, and when the photo switch beam passes through the slit of the sensed terminal (331), it is determined that the latch (30) and the pin seat (31) are in the best combination position to perform the locking and unlocking procedure.

4. The self-locking CT machine frame according to any one of claims 1 to 3, wherein a mounting seat (20) is arranged on the inclined machine frame (2), a first assembling portion (201) for accommodating the driving device (32) and a sensor support (21) are arranged on the mounting seat (20), a first position sensor (22) and a second position sensor (23) are arranged on the sensor support (21), and a sensor pressure plate (24) capable of abutting against the first position sensor (22) and the second position sensor (23) is arranged at the top end of the bolt (30).

5. The self-locking CT machine frame according to claim 4, wherein the sensor pressure plate (24) is provided with an assembly hole (240) at the center, the top end of the bolt (30) passes through the assembly hole (240) and is assembled and fixed with the sensor pressure plate (24) through a screw, the bolt (30) and the pin seat (31) are in an unlocked state when the sensor pressure plate (24) abuts against the first position sensor (22), and the bolt (30) and the pin seat (31) are in a locked state when the sensor pressure plate (24) abuts against the second position sensor (23).

6. The self-locking CT machine frame according to claim 5, wherein a second assembling portion (203) communicated with the first assembling portion (201) is arranged on the mounting seat (20), a threaded sleeve (204) is arranged in the second assembling portion (203), the bottom end of the bolt (30) is matched with the threaded sleeve (204) to form a thread pair, a connecting screw (313) is arranged in the pin seat (31), and a threaded hole (301) matched with the connecting screw (313) is arranged at the bottom end of the bolt (30).

7. The self-locking CT machine frame according to claim 6, wherein the driving device (32) is a worm gear speed reduction motor, a connecting key (321) capable of sliding along an axial direction is arranged in an output hole (320) of the worm gear speed reduction motor, the connecting key (321) is fixedly assembled with the bolt (30), a through hole (202) corresponding to the output hole (320) of the worm gear speed reduction motor is arranged at the top of the mounting seat (20), and the bolt (30) penetrates through the through hole (202), the output hole (320) of the motor and the threaded sleeve (204) from top to bottom.

8. The self-locking CT gantry of claim 7, wherein the pin seat (31) is provided with a first accommodating portion (310) and a second accommodating portion (312) which are communicated with each other, the first accommodating portion (310) is provided with a tightening spring (311), the connection screw (313) is provided in the second accommodating portion (312) and the bottom of the connection screw abuts against the tightening spring (311), and the connection screw (313) and the pin (30) are coaxially arranged.

9. Self-locking CT gantry according to any of the claims 5 to 8, wherein the sensor holder (21) comprises a holding portion (210) assembled with the mounting seat (20) and an assembling portion (211) perpendicular to the holding portion (210) and arranged parallel above the mounting seat (20), the first position sensor (22) and the second position sensor (23) being arranged axially parallel on the assembling portion (211).

10. Self-locking CT gantry according to claim 9, characterized in that the bottom of the mounting seat (20) is provided with a first inclined surface (25), the top of the pin seat (31) is provided with a second inclined surface (314) adapted to the first inclined surface (25), the first inclined surface (25) and the second inclined surface (314) abut when the bolt (30) and the pin seat (31) are in the locked state.

11. A vehicle-mounted CT machine, comprising the self-locking CT gantry of any one of claims 1 to 10.