CN114305474A - Driving mechanism for CT machine and CT machine - Google Patents
Driving mechanism for CT machine and CT machine Download PDFInfo
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- CN114305474A CN114305474A CN202210079074.3A CN202210079074A CN114305474A CN 114305474 A CN114305474 A CN 114305474A CN 202210079074 A CN202210079074 A CN 202210079074A CN 114305474 A CN114305474 A CN 114305474A
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- machine
- rotating shaft
- fixing ring
- drive mechanism
- mounting bracket
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- 238000001816 cooling Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000002591 computed tomography Methods 0.000 abstract description 44
- 230000005540 biological transmission Effects 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
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Abstract
The invention relates to the technical field of CT (computed tomography) machine equipment, in particular to a driving mechanism for a CT machine and the CT machine. The driving mechanism for the CT machine provided by the invention comprises a motor component, wherein the motor component is integrated on a fixed rack of the CT machine, the mounting bracket is used for mounting an encoder, a ray source and a detector, the motor component is used for driving the mounting bracket to rotate, the output end of the motor can directly drive the mounting bracket to rotate, and then a tomographic image of a detected person is generated through the encoder, the ray source and the detector on the mounting bracket.
Description
Technical Field
The invention relates to the technical field of CT (computed tomography) machine equipment, in particular to a driving mechanism for a CT machine and the CT machine.
Background
The CT machine is mainly composed of an X-ray generating part (X-ray tube), an X-ray detecting part (X-ray detector), a mechanical moving part (frame, scanning bed), a computer and an image display part. The X-ray tube and the detector of the CT machine are arranged on the CT frame. In CT scanning, a rotating assembly of a gantry rotates around a subject to cause an X-ray tube to emit X-rays to different parts of the subject, and a detector receives X-ray attenuation signals transmitted through a human body (or a measured object), thereby reconstructing a tomographic image of the subject by a computer.
Traditional CT machine motion part includes motor, shaft coupling, primary pulley, driven pulleys and belt, and the motor passes through the shaft coupling to be connected with the primary pulley transmission, and the belt is around establishing on primary pulley and driven pulleys, and driven pulleys fixes in the frame, and the motor passes through belt drive's mode and drives the frame and rotate. However, the existing driving mechanism of the CT machine has many transmission parts, long transmission chains and large transmission accumulated error, and can influence the imaging definition of the CT machine.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing driving mechanism for the CT machine has long transmission chain and large transmission accumulated error, and influences the imaging definition of the CT machine.
(II) technical scheme
In order to solve the above technical problems, an embodiment of the present invention provides a driving mechanism for a CT machine, where the CT machine includes a fixed frame and a mounting bracket, the driving mechanism includes a motor assembly, the motor assembly is mounted on the fixed frame, the mounting bracket is used to mount an encoder, a radiation source and a detector, and the motor assembly is used to drive the mounting bracket to rotate.
According to an embodiment of the present invention, the driving mechanism for CT machine according to claim 1 is characterized in that: the motor assembly comprises a stator, a rotor, a shell and a rotating shaft; the rotating shaft is cylindrical, the shell is annularly sleeved outside the rotating shaft, an annular accommodating cavity is formed between the rotating shaft and the shell, and the stator and the rotor are both positioned in the accommodating cavity;
the stator is fixedly connected with the fixed rack through a shell, and the rotor is connected with the rotating shaft and can rotate relative to the mounting bracket; at least one reinforcing rib is arranged at the edge of the fixed frame.
According to an embodiment of the invention, the drive mechanism further comprises a bearing, the bearing being arranged between the rotating shaft and the stationary frame.
According to one embodiment of the invention, the fixed frame is plate-shaped, a round hole is arranged in the middle of the fixed frame, the fixed frame is sleeved on the outer side of the rotating shaft, and the bearing is arranged between the inner wall of the round hole and the outer wall of the rotating shaft.
According to one embodiment of the invention, an annular bulge is formed on the outer wall surface of the rotating shaft, the bulge is arranged corresponding to the fixed rack, and the bearing is arranged between the bulge and the inner wall of the circular hole.
According to one embodiment of the invention, the housing is cylindrical.
According to an embodiment of the invention, the drive mechanism further comprises a cooling ring, through which the stator is connected to the housing.
According to one embodiment of the invention, the mounting bracket includes a first retaining ring and a second retaining ring;
the first fixing ring is sleeved on the rotating shaft and used for mounting an encoder of the CT machine;
the second fixing ring is sleeved on the rotating shaft, and the second fixing ring is used for mounting a ray source and a detector of the CT machine.
According to an embodiment of the present invention, the first fixing ring is disposed at one end of the rotating shaft and is annular, and the second fixing ring is sleeved at the other end of the rotating shaft and is annular;
the diameter of the second fixing ring is larger than that of the first fixing ring.
In another aspect, an embodiment of the present invention further provides a CT machine, which includes a fixed frame, and the driving mechanism for the CT machine described in any of the above embodiments.
The invention has the beneficial effects that: the driving mechanism for the CT machine provided by the invention comprises a motor component, wherein the motor component is integrated on a fixed rack of the CT machine, the mounting bracket is used for mounting an encoder, a ray source and a detector, the motor component is used for driving the mounting bracket to rotate, the output end of the motor can directly drive the mounting bracket to rotate, and then a tomographic image of a detected person is generated through the encoder, the ray source and the detector on the mounting bracket.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a perspective view of a drive mechanism for a CT machine according to one embodiment of the present invention;
fig. 2 is a sectional view of a drive mechanism for a CT machine according to an embodiment of the present invention.
Icon: 1-a drive mechanism; 11-a rotating shaft; 111-bumps; 112-a receiving cavity; 12-a stator; 13-a rotor; 14-cooling the ring; 15-a first retaining ring; 16-a second retaining ring; 17-a bearing; 18-a housing; 2-fixing the frame.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "center", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a driving mechanism 1 for a CT machine, the driving mechanism 1 for a CT machine including a fixed frame 2 and a mounting bracket, and the driving mechanism is characterized in that: the driving mechanism 1 comprises a motor assembly, the motor assembly is mounted on the fixed rack 2, the mounting bracket is used for mounting the encoder, the ray source and the detector, and the motor assembly is used for driving the mounting bracket to rotate. Wherein motor element is integrated on the fixed frame 2, can support whole actuating mechanism 1, therefore motor element can directly drive the installing support and rotate, need not drive the installing support through transmission parts such as traditional motor, shaft coupling, band pulley, belt, consequently can reduce transmission accumulative error, and then improve CT machine's imaging definition.
As shown in fig. 1 and 2, the motor assembly includes a stator 12, a rotor 13, a casing 18, and a rotating shaft 11; the rotating shaft 11 is cylindrical, the casing 18 is annularly sleeved outside the rotating shaft 11, an annular accommodating cavity 112 is formed between the rotating shaft 11 and the casing 18, and the stator 12 and the rotor 13 are both located in the accommodating cavity 112; stator 12 pass through casing 18 with 2 fixed connection of fixed frame, rotor 13 with pivot 11 links to each other, just pivot 11 can rotate for stator 13, also is that pivot 11 can rotate for fixed frame 2, because pivot 11 can directly drive the installing support rotation in this application, installs encoder, ray source and detector on the installing support, consequently need not be used to transmission parts such as shaft coupling, band pulley, belt. In this embodiment, the cylindrical barrel serves as a rotating shaft 11, then the rotor 13 is connected with the rotating shaft 11, the stator 12 is connected with the fixed frame 2 through the casing 18, a coil is wound on the stator 12, after the winding of the stator 12 is electrified, a rotating magnetic field is generated and acts on the rotor 13 to form a magnetoelectric power rotating torque, after the winding of the stator 12 is electrified, the rotor 13 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the mounting bracket to rotate. The rotating shaft 11 is a cylindrical structure, so when the CT machine works, the scanning bed extends into the rotating shaft 11, the motor component drives the mounting bracket to rotate, the mounting bracket is provided with an X-ray generating part and an X-ray detecting part, the X-ray generating part and the X-ray detecting part are transmitted to the computer through X-ray emission and reception, and finally, imaging is carried out through the image display part.
According to an embodiment of the present invention, as shown in fig. 1 and fig. 2, the driving mechanism 1 further includes a bearing 17, the bearing 17 is disposed between the rotating shaft 11 and the fixed frame 2, the bearing 17 is disposed between the fixed frame 2 and the rotating shaft 11, and provides a rotary component support to reduce power loss; preferably, in this embodiment, fixed frame 2 is platelike, 2 middle parts of fixed frame are equipped with the round hole, 2 covers of fixed frame are established the outside of pivot 11, bearing 17 is located the round hole inner wall with between the outer wall of pivot 11, simultaneously the border position of fixed frame 2 still is equipped with at least one strengthening rib, improves the structural strength of fixed frame 2 through setting up the strengthening rib. In this embodiment, the fixed frame 2 may be a circular plate or a square plate, and the fixed frame 2 may also be other irregular shapes, so long as the middle of the fixed frame 2 is provided with a circular hole, which can be sleeved on the outer side of the rotating shaft 11, so as to implement the design idea of the present invention, and the present invention is within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an annular protrusion 111 is formed on an outer wall surface of the rotating shaft 11, the protrusion 111 is disposed corresponding to the fixed frame 2, and the bearing 17 is disposed between the protrusion 111 and an inner wall of the circular hole; the bearing 17 is supported by the provision of a projection 111, wherein the projection 111 acts as a bearing seat. Preferably, as shown in fig. 1 and 2, the housing 18 has a cylindrical shape.
According to an embodiment of the present invention, as shown in fig. 1 and 2, the driving mechanism 1 further includes a cooling ring 14, the stator 12 is connected to the casing 18 through the cooling ring 14, and the cooling ring 14 is disposed between the casing 18 and the stator, and is capable of cooling the stator 12 and removing heat generated by the stator 12.
According to one embodiment of the invention, the mounting bracket comprises a first fixing ring 15 and a second fixing ring 16; the first fixing ring 15 is sleeved on the rotating shaft 11, and the first fixing ring 15 is used for mounting an encoder of the CT machine; the second fixing ring 16 is sleeved on the rotating shaft 11, and the second fixing ring 16 is used for installing the ray source and the detector of the CT machine. In this embodiment, the encoder, the radiation source, and the detector are installed by two fixed rings, so that when the CT machine is operated, the rotating shaft 11 rotates, the first fixed ring 15 and the second fixed ring 16 rotate synchronously with the rotating shaft 11, at this time, the radiation source (X-ray tube) emits X-rays to different parts of the subject along with the rotation of the second fixed ring 16, and the detector receives the attenuation of the X-rays passing through the human body (or the object to be measured), so as to reconstruct a tomographic image of the subject by the computer.
As shown in fig. 1 and 2, the first fixing ring 15 is disposed at one end of the rotating shaft 11 and is annular, and the second fixing ring 16 is sleeved at the other end of the rotating shaft 11 and is annular; the diameter of the second fixing ring 16 is larger than the diameter of the first fixing ring 15.
In another aspect, the embodiment of the present invention further provides a CT machine, which includes a fixed frame 2, a mounting bracket, and a driving mechanism 1 for the CT machine according to any of the above embodiments, and since the driving mechanism 1 for the CT machine provided by this embodiment is integrated with the fixed frame of the CT machine, transmission components such as a belt and a pulley are reduced, and further, transmission accumulated errors are reduced, and the imaging definition of the CT machine can be improved.
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 that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A drive mechanism for a CT machine, the CT machine comprising a stationary gantry (2) and a mounting bracket, characterized in that: the driving mechanism (1) comprises a motor assembly, the motor assembly is installed on the fixed rack (2), the mounting bracket is used for mounting the encoder, the ray source and the detector, and the motor assembly is used for driving the mounting bracket to rotate.
2. The drive mechanism for a CT machine according to claim 1, wherein: the motor component comprises a stator (12), a rotor (13), a shell (18) and a rotating shaft (11); the rotating shaft (11) is cylindrical, the casing (18) is annularly sleeved outside the rotating shaft (11), an annular accommodating cavity (112) is formed between the rotating shaft (11) and the casing (18), and the stator (12) and the rotor (13) are both positioned in the accommodating cavity (112);
the stator (12) is fixedly connected with the fixed frame (2) through a machine shell (18), and the rotor (13) is connected with the rotating shaft (11) and can rotate relative to the mounting bracket.
3. The drive mechanism for a CT machine according to claim 2, wherein: the driving mechanism further comprises a bearing (17), and the bearing (17) is arranged between the rotating shaft (11) and the fixed rack (2).
4. The drive mechanism for a CT machine according to claim 3, wherein: the fixed rack (2) is plate-shaped, a round hole is formed in the middle of the fixed rack (2), the fixed rack (2) is sleeved on the outer side of the rotating shaft (11), and the bearing (17) is arranged between the inner wall of the round hole and the outer wall of the rotating shaft (11); at least one reinforcing rib is arranged at the edge of the fixed frame.
5. The drive mechanism for a CT machine of claim 4 wherein: form ring form arch (111) on the outer wall of pivot (11), arch (111) correspond fixed frame (2) set up, bearing (17) are located arch (111) with between the round hole inner wall.
6. The drive mechanism for a CT machine of claim 4 wherein: the casing (18) is cylindrical.
7. The drive mechanism for a CT machine according to claim 2, wherein: the driving mechanism further comprises a cooling ring (14), and the stator (12) is connected with the shell (18) through the cooling ring (14).
8. The drive mechanism for a CT machine according to claim 2, wherein: the mounting bracket comprises a first fixing ring (15) and a second fixing ring (16);
the first fixing ring (15) is sleeved on the rotating shaft (11), and the first fixing ring (15) is used for mounting an encoder of the CT machine;
the second fixing ring (16) is sleeved on the rotating shaft (11), and the second fixing ring (16) is used for installing a ray source and a detector of the CT machine.
9. The drive mechanism for a CT machine according to claim 8, wherein: the first fixing ring (15) is arranged at one end of the rotating shaft (11) and is annular, and the second fixing ring (16) is sleeved at the other end of the rotating shaft (11) and is annular;
the diameter of the second fixing ring (16) is greater than the diameter of the first fixing ring (15).
10. A CT machine comprising a stationary gantry (2), characterized in that it further comprises a drive mechanism for a CT machine according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079074.3A CN114305474A (en) | 2022-01-24 | 2022-01-24 | Driving mechanism for CT machine and CT machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079074.3A CN114305474A (en) | 2022-01-24 | 2022-01-24 | Driving mechanism for CT machine and CT machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114305474A true CN114305474A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210079074.3A Pending CN114305474A (en) | 2022-01-24 | 2022-01-24 | Driving mechanism for CT machine and CT machine |
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| Country | Link |
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| CN (1) | CN114305474A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031201A1 (en) * | 2000-09-12 | 2002-03-14 | Tsutomu Suzuki | X-ray CT scanner |
| CN103750852A (en) * | 2013-12-26 | 2014-04-30 | 中国科学院苏州生物医学工程技术研究所 | Work table system of movable X-ray diagnosing device |
| US20160235377A1 (en) * | 2015-02-12 | 2016-08-18 | Samsung Electronics Co., Ltd. | Computed tomography system having cooling system |
| US20170214279A1 (en) * | 2016-01-27 | 2017-07-27 | General Electric Company | Segmented Direct Drive Motor For Use in a Computed Tomography System |
| CN111887870A (en) * | 2020-08-26 | 2020-11-06 | 天津金曦医疗设备有限公司 | Anti-scatter X-ray computed tomography instrument and using method |
| CN112879264A (en) * | 2021-01-22 | 2021-06-01 | 散裂中子源科学中心 | Heat load chopper and control system thereof |
-
2022
- 2022-01-24 CN CN202210079074.3A patent/CN114305474A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031201A1 (en) * | 2000-09-12 | 2002-03-14 | Tsutomu Suzuki | X-ray CT scanner |
| CN103750852A (en) * | 2013-12-26 | 2014-04-30 | 中国科学院苏州生物医学工程技术研究所 | Work table system of movable X-ray diagnosing device |
| US20160235377A1 (en) * | 2015-02-12 | 2016-08-18 | Samsung Electronics Co., Ltd. | Computed tomography system having cooling system |
| US20170214279A1 (en) * | 2016-01-27 | 2017-07-27 | General Electric Company | Segmented Direct Drive Motor For Use in a Computed Tomography System |
| CN111887870A (en) * | 2020-08-26 | 2020-11-06 | 天津金曦医疗设备有限公司 | Anti-scatter X-ray computed tomography instrument and using method |
| CN112879264A (en) * | 2021-01-22 | 2021-06-01 | 散裂中子源科学中心 | Heat load chopper and control system thereof |
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