CN219367205U - Support device for CT equipment and CT equipment - Google Patents

Abstract

The utility model provides a supporting device for CT equipment and the CT equipment, and relates to the technical field of radiation inspection. The CT apparatus includes a rotatable portion, and the supporting device includes: the CT equipment comprises a pivotable arm, a pivot, a driving motor and at least two rotating wheels, wherein the pivotable arm is pivotably connected to a rack of the CT equipment through the pivot, the at least two rotating wheels are arranged on the pivotable arm and are respectively positioned on two sides of a pivot axis of the pivotable arm, at least one of the at least two rotating wheels is a driving wheel, the driving motor is directly connected with the driving wheel, the driving wheel can drive the rotatable part to rotate around the pivot axis, the driving motor comprises a power output shaft, and the power output shaft of the driving motor is parallel to the pivot.

Description

Support device for CT equipment and CT equipment

Technical Field

The present utility model relates to the technical field of radiation inspection, and more particularly, to a support device for a CT apparatus and a CT apparatus.

Background

CT technology plays an important role in security inspection because it can eliminate the effects of object overlapping. CT equipment is also widely used in technical fields such as article detection, and CT equipment not only can detect smaller articles such as traveling bags and aviation containers, but also can detect larger articles such as containers and vehicles.

In the related art, a CT apparatus acquires projection data at different angles by rotation of an X-ray machine and a detector using a slip ring device, acquires tomographic images by a reconstruction method, and thus acquires internal information of a baggage item to be detected. The existing baggage item inspection equipment can reconstruct the atomic number and electron density of the inspected substance by matching with a dual-energy or multi-energy imaging technology, thereby realizing the identification of the substance type and playing a good role in the detection of explosives, dangerous goods and the like.

For example, in the related art, the CT apparatus mainly employs a single large bearing as a rotation support, the entire CT imaging system is mounted on the large bearing, and the CT imaging system is driven to rotate by a motor and a v-ribbed belt. When the rotatable part on the large bearing is driven, the driving electrode needs larger power, so that on one hand, the power consumption of equipment is larger, on the other hand, the installation of the driving motor is more complex, and when the driving motor or the rotatable part breaks down, the disassembly and the maintenance are inconvenient.

The above information disclosed in this section is only for understanding the background of the technical idea of the present utility model, and thus, the above information may contain information that does not constitute the prior art.

Disclosure of Invention

In order to solve the above problems in the prior art, embodiments of the present utility model provide a support device for a CT apparatus and the CT apparatus, which have advantages of easy maintenance, light weight, and low power consumption of the apparatus.

An aspect of the present utility model provides a supporting device for a CT apparatus including a rotatable part, the supporting device comprising: the CT equipment comprises a pivotable arm, a pivot, a driving motor and at least two rotating wheels, wherein the pivotable arm is pivotably connected to a rack of the CT equipment through the pivot, the at least two rotating wheels are arranged on the pivotable arm and are respectively positioned on two sides of a pivot axis of the pivotable arm, at least one of the at least two rotating wheels is a driving wheel, the driving motor is directly connected with the driving wheel, the driving wheel can drive the rotatable part to rotate around the pivot axis, the driving motor comprises a power output shaft, and the power output shaft of the driving motor is parallel to the pivot.

According to some exemplary embodiments, the support means comprises two rotating wheels, the pivot axis of the pivotable arm and the orthographic projection of the respective axes of rotation of the two rotating wheels on a first plane being substantially on the same line, wherein the first plane is a plane perpendicular to the axis of rotation of the rotatable part.

According to some exemplary embodiments, the support device further comprises a first bearing, a second bearing and a third bearing, the pivot shaft is connected to the frame, the pivotable arm is connected to the pivot shaft by the first bearing, and the two driving wheels are connected to the pivotable arm by the second bearing and the third bearing, respectively.

According to some exemplary embodiments, the driving wheel is sleeved on the power output shaft, and the two third bearings are respectively sleeved on the power output shaft and positioned on two sides of the driving wheel.

According to some exemplary embodiments, an orthographic projection of the drive motor on the first plane falls within an orthographic projection of the pivotable arm on the first plane.

According to some exemplary embodiments, the other of the at least two rotating wheels is a driven wheel, and the rotatable portion is capable of imparting a friction force to the driven wheel to rotate the driven wheel during rotation.

According to some exemplary embodiments, the perpendicular distance between the rotational axis of the two rotating wheels and the pivot axis of the pivotable arm is substantially equal.

In another aspect, a CT apparatus is provided, comprising a rotatable part and a support device as described above for driving and supporting the rotatable part.

According to some exemplary embodiments, the CT apparatus comprises a plurality of the support devices, an angle α is formed between a line between a pivot axis of the pivotable arm of the same support device and an orthographic projection of a rotation axis of the rotating wheel on a first plane and a vertical direction, the angle α being between 30 ° and 60 °, wherein the first plane is a plane perpendicular to the rotation axis of the rotatable part.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

For a more complete understanding of the present utility model, and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:

fig. 1A is a front view of a CT apparatus according to some exemplary embodiments of the present utility model;

FIG. 1B is a side view of a CT apparatus according to some exemplary embodiments of the present utility model;

fig. 2A is a front view of a rotatable portion of a CT apparatus according to some exemplary embodiments of the present utility model;

fig. 2B is a side view of a rotatable portion of a CT apparatus according to some exemplary embodiments of the present utility model;

fig. 3A is a front view of a supporting device of a CT apparatus according to an embodiment of the present utility model;

FIG. 3B is a side view of a support device of the CT apparatus of the embodiment of FIG. 3A, in accordance with the present utility model;

fig. 4A is a front view of a supporting device of a CT apparatus according to another embodiment of the present utility model;

fig. 4B is a side view of a supporting device of the CT apparatus according to the embodiment of fig. 4A of the present utility model.

Detailed Description

Hereinafter, embodiments of the present utility model will be described with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model. In addition, the respective embodiments of the present utility model and technical features in the embodiments may be combined with each other in any manner.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Furthermore, the terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components. All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The CT apparatus according to the embodiment of the present utility model will be described in detail with reference to fig. 1A to 4B.

Fig. 1A is a front view of a CT apparatus according to some exemplary embodiments of the present utility model. Fig. 1B is a side view of a CT apparatus according to some exemplary embodiments of the present utility model.

As shown in fig. 1A and 1B, the CT apparatus 100 includes: a gantry 110, a support device 1, a rotatable part 2, and a scanning device 3.

The gantry 110 is used to support the CT apparatus 100, the support device 1 is disposed on the gantry 110, and the support device 1 may be disposed in plural, for example, two opposite to a first side near the lower side of the gantry 110, and two opposite to a second side near the lower side of the gantry 110 opposite to the first side. The support device 1 is used for supporting the rotatable part 2, for example, every two support devices 1 located on the same side constitute a support device group for supporting the rotatable part 2.

The support device 1 comprises a plurality of rotatable wheels 13, wherein at least one rotatable wheel 13 of at least one support device 1 acts as a driving wheel. The specific structure of the support device 1 is described in detail below.

The rotatable part 2 is rotatable about the rotation axis AX1 by driving of the driving wheels of the supporting device 1, and the rotatable part 2 is commonly supported by the plurality of supporting devices 1 during rotation of the rotatable part 2. For example, the rotatable part 2 is supported by two sets of the supporting devices 1 near the lower left and lower right in fig. 1A, respectively, and the rotatable part 2 is rotated by the driving wheel, and when the rotatable part 2 rotates, the rotatable wheels 13 of the other supporting devices 1 without driving wheels are in the opposite direction to the rotation direction of the rotatable part 2, thereby effectively reducing the resistance when the rotatable part 2 rotates.

Fig. 2A is a front view of a rotatable portion of a CT apparatus according to some exemplary embodiments of the present utility model. Fig. 2B is a side view of a rotatable portion of a CT apparatus according to some exemplary embodiments of the present utility model.

As shown in fig. 2A and 2B, the scanning device 3 includes a radiation source 31 and a detector 32, both of which are disposed on the rotatable portion 2, and the radiation source 31 and the detector 32 are disposed opposite to each other in a radial direction of the rotatable portion. For example, the radiation source 31 is disposed at a first position on the circumferential side of the rotatable part 2, the detector 32 is disposed at a second position opposite to the first position on the circumferential side, and the centers of gravity of the radiation source 31 and the detector 32 are located on the rotation axis AX1 or substantially in the vicinity of the rotation axis AX1, thereby ensuring that no or less vibration occurs when the rotatable part 2 rotates the radiation source 31 and the detector 32.

In the embodiment of the present utility model, the plurality of supporting means 1 restrict the movement of the rotatable part 2 in the first radial direction D1. I.e. each support means may provide a supporting force to the rotatable part 2 at a second radial clearance D2 opposite to the first radial direction D1, so that the rotatable part 2 can be kept substantially free from displacement of the rotation axis AX1 during rotation.

Illustratively, the first radial direction D1 and the second radial direction D2 each intersect the rotation axis AX1 of the rotatable part 2, that is, each supporting device 1 limits the movement of the rotatable part 2, so that the rotation axis AX1 of the rotatable part 2 is substantially maintained at a fixed position, and the rotatable part 2 is maintained in a stable state during rotation, thereby avoiding the problem of vibration of the CT apparatus caused by the deviation of the rotation center of the rotatable part 2 during rotation.

In some embodiments of the present utility model, as shown in fig. 1A to 2B, the rotatable part 2 includes a rotatable body 22 and at least one rotatable rail 21, and the scanning device 3 is disposed on the rotatable body 22, and the at least one rotatable rail 21 may be an annular rail, that is, at least one of the rotatable rails 21 is an annular rail having an inner peripheral surface and an outer peripheral surface, and an annular center formed by the inner peripheral surface and an annular center formed by the outer peripheral surface of the annular rail are the same, that is, concentric circles.

Illustratively, the rotatable portion includes a rotatable body and a rotatable track disposed on one side of the rotatable body in a direction parallel to the rotational axis AX1 of the rotatable body. In some alternative embodiments, the rotatable portion may be provided as one rotatable body and more than two rotatable tracks.

In other alternative embodiments, the rotatable track 21 may be, for example, a disc-shaped track, with the rotatable body 22 sandwiched between the two disc-shaped tracks.

In some embodiments of the present utility model, as shown in fig. 2A and 2B, the rotatable part 2 includes two rotatable rails 21, and the rotatable body 22 is sandwiched between the two rotatable rails 21 in a direction parallel to the rotation axis AX1 of the rotatable part 2, and the two rotatable rails 21 may be provided as annular rails and/or disc-shaped rails. The support device 1 may be at least partially in contact with each rotatable rail 21, for example the support device 1 is in contact with the outer circumferential surface of the rotatable rail 21. Specifically, the outer peripheral surface of the rotatable wheel 13 of the supporting device 1 is in contact with the outer peripheral surface of the rotatable rail 21.

As shown in fig. 1A and 1B, each rotatable rail 21 is provided with two supporting devices 1, respectively, and the two supporting devices 1 are symmetrically disposed on both sides of the rotation axis AX1 of the rotatable rail 21. For example, at a position of the rotatable part 2 near the lower side of the frame 110.

In some embodiments of the present utility model, two or more supporting devices are provided corresponding to each rotatable rail 21, and among the two or more supporting devices provided correspondingly, for example, only one supporting device including a driving wheel may be provided, and the other supporting devices may not be provided with a driving wheel and include only a driven wheel.

In an alternative embodiment the number of support means comprising the drive wheel may be set according to the actual need, for example when the rotatable part is large and for detecting large articles, a plurality of support means comprising the drive wheel may be provided, whereby an efficient rotation control of the rotatable part is achieved. When the rotatable part is smaller, a smaller number of supporting devices comprising driving wheels can be arranged, so that the power consumption of the CT equipment is reduced, and the effective rotation control of the rotatable part is ensured.

Fig. 3A is a front view of a supporting device of a CT apparatus according to an embodiment of the present utility model. Fig. 3B is a side view of a supporting device of the CT apparatus according to the embodiment of fig. 3A of the present utility model. Fig. 4A is a front view of a supporting device of a CT apparatus according to another embodiment of the present utility model. Fig. 4B is a side view of a supporting device of the CT apparatus according to the embodiment of fig. 4A of the present utility model.

As shown in fig. 3A to 4B, the support device 1 includes a pivotable arm 11, a pivot 12, and a rotating wheel 13. For example, the rotating wheels 13 are provided in two or more.

Fig. 3A and 3B show a structure of the supporting device 1. The support device 1 comprises a pivotable arm 11, a pivot 12 and two rotating wheels, the pivot axis of the pivotable arm 11 being 11AX. The pivotable arm 11 is pivotably connected to the frame 110 by a pivot 12, and two rotating wheels are provided on the pivotable arm 11 on both sides of the pivot axis 11AX of the pivotable arm 11, respectively.

One of the two rotating wheels is a driven wheel 13 and the other is a driving wheel 13'.

In an exemplary embodiment of the present utility model, as shown in fig. 1B and 3B, the CT apparatus further includes a driving motor 14, the driving motor 14 being provided on the pivotable arm 11 of the supporting means, for example, the driving motor 14 being fixed to one side of the pivotable arm 11 by a screw or a nut.

The drive motor 14 is directly connected to the drive wheel 13', and the drive wheel 13' is capable of driving the rotatable portion 2 to rotate about the rotation axis AX1, the drive motor 14 including a power output shaft 141, the power output shaft 141 of the drive motor being disposed in parallel with the pivot shaft 12.

For example, the rotation axis 13AX of the driving wheel 13' coincides with the rotation axis of the output shaft 141 of the driving motor, and the driving wheel 13' is directly sleeved on the output shaft 141 of the driving electrode, so that the driving motor 14 can drive the driving wheel 13' to rotate.

For example, as shown in fig. 3B, each supporting device may comprise a pivotable arm 11, on each of which a plurality of rotating wheels are arranged, for example two rotating wheels symmetrically arranged at both ends of the pivotable arm, comprising a driven wheel 13 and a driving wheel 13'. The pivotable arm 11 is pivotally connected to the frame 110, e.g. the pivotable arm 11 is pivotally connected to the frame by a pivot 12, the pivotable arm 11 being rotatable about the pivot 12.

Illustratively, the support device 1 as shown in fig. 1A includes two rotating wheels, one of which is a driving wheel and the other of which is a driven wheel. Through setting up the swiveling wheel that is located the below as the drive wheel to can produce bigger frictional force to rotatable portion 2, prevent that drive wheel and rotatable portion from taking place relative slip, improve the control to rotatable portion 2 rotation precision, effectively improve CT equipment's imaging quality.

In one embodiment, the at least one support device 1 may comprise a pivotable arm 11, a pivot 12 and at least two rotating wheels 13, the pivotable arm 11 being pivotably connected to the frame 110 by means of the pivot 12, the at least two rotating wheels 13 being arranged on the pivotable arm 11 on both sides of the pivot axis of the pivotable arm 11, respectively, for example two rotating wheels 13 being symmetrically arranged on both ends of the pivotable arm. At least two of the rotating wheels 13 are driven wheels, and the rotatable part 2 can apply friction force to the driven wheels to drive the driven wheels to rotate during rotation. In the embodiment of the present utility model, by designing the supporting devices 1 as a "see-saw" type structure, each supporting device 1 can adaptively support the rotatable part 2 during the rotation of the rotatable part 2, that is, according to the contact, rotation, etc. of each supporting point, the pivotable arm 11 of each supporting device 1 can adaptively pivot, and the supporting force given to the rotatable part 2 by each rotating wheel is automatically distributed, so that a good supporting effect on the rotatable part can be achieved.

In some exemplary embodiments of the present utility model, at least one support device 1 may serve the dual function of driving and supporting the rotatable part 2 among the plurality of support devices 1. The structure of the support device 1 that serves the dual function of driving and supporting the rotatable portion 2 is mainly different from the structure of the support device 1 that serves the function of supporting the rotatable portion 2 in that: the supporting device 1, which serves the dual function of driving and supporting the rotatable part 2, is connected with components such as a driving motor, and the like, except for the fact that the two are substantially identical in structure, and in this context, substantially identical structures and components are denoted by the same reference numerals. Specifically, the at least one supporting device 1 may comprise a pivotable arm 11, a pivot 12, a driving motor 14 and at least two rotating wheels 13, the pivotable arm 11 being pivotably connected to the frame 110 by the pivot 12, the at least two rotating wheels 13 being arranged on the pivotable arm 11 and being located on both sides of the pivot axis of the pivotable arm 11, respectively, at least one of the at least two rotating wheels 13 being a driving wheel, which is connected to the driving motor 14 and is rotatable under the driving of the driving motor 14. In the embodiment of the present utility model, the supporting device 1, which serves the dual function of driving and supporting the rotatable part 2, also has a "teeter-totter" structure, so that the supporting device 1 can also adaptively support the rotatable part 2 during the rotation of the rotatable part 2.

In some embodiments of the utility model, as shown in fig. 3B and 4B, at least one support means comprises a pivotable arm 11 and two rotating wheels, each having a respective axis of rotation 13AX, the orthographic projection of the pivot axis 11AX of the pivotable arm 11 and the respective axes of rotation 13AX of the two rotating wheels on a first plane for the same support means 1 being substantially on the same line, wherein the first plane is a plane perpendicular to the axis of rotation AX1 of the rotatable part.

Illustratively, in the same support means, the vertical distance between the rotational axis 13AX of the two rotating wheels and the pivot axis 11AX of the pivotable arm is substantially equal. As shown in fig. 3A, the distance between the rotation axis 13AX of the driven wheel 13 on the upper side of the supporting device 1 and the pivot axis 11AX is d1, and the distance between the rotation axis 13AX of the driving wheel 13' on the lower side of the supporting device 1 and the pivot axis 11AX is d2, and d1 and d2 are substantially equal.

In some embodiments of the utility model, the front projection of the drive motor 14 on the first plane falls within the front projection of the pivotable arm 11 on the first plane.

As shown in fig. 1A, the line X1 between the pivot axis of the pivotable arm and the orthographic projection of the rotation axis of the rotary wheel on the first plane of the same supporting device forms an angle α with the vertical direction X2, the angle α being between 30 ° and 60 °.

For example, the angle α may be 30 °, 45 °, 60 °, or the like.

According to the embodiment of the utility model, the supporting device can be better contacted with the peripheral surface of the rotatable part by setting the angle alpha, the rotatable part is more stable in the rotating process, vibration caused by rotation is avoided, and the imaging quality of the CT equipment is reduced.

Illustratively, in the same supporting device 1, the vertical distance between the rotation axis 13AX of the two rotation wheels and the pivot axis 11AX of the pivotable arm is substantially equal. That is, the two rotating wheels are symmetrically arranged relative to the pivot axis 11AX, so that the rotatable part 2 can keep a stable state during rotation, and the supporting device is prevented from interfering with the rotation of the two pairs of rotatable parts 2 due to the asymmetric arrangement.

According to the embodiment of the utility model, the rotation stability of the ray source and the detector is effectively improved by arranging a distributed and self-adaptive multi-point support mode, which is beneficial to improving the image quality of CT equipment, improving the detection accuracy and prolonging the service life of each structural component of the CT equipment.

As shown in fig. 3A to 4B, the at least one supporting means further comprises a first bearing 121, a second bearing 132 and a third bearing 133, the pivot 12 is connected to the frame 110, the pivotable arm 11 is connected to the pivot 12 through the first bearing 121, and the two rotary wheels 13 are connected to the pivotable arm 11 through the second bearing 132 and the third bearing 133, respectively.

As shown in fig. 3B, the driving wheel 13' is sleeved on the power output shaft 141, and two third bearings 133 are respectively sleeved on the power output shaft 141 and are positioned at two sides of the driving wheel. By connecting the power take-off shaft 141 with the driving wheel 13' using two third bearings, it is ensured that the driving wheel rotates smoothly when driven by the driving motor.

That is, the pivotable arm 11 is rotatably supported on the pivot shaft 12 by means of the first bearing 121, and the two rotary wheels 13 can rotatably support the sub-pivotable arm 11 by means of the second bearing 132 and the third bearing 133, respectively. In the embodiment of the utility model, through the distributed multi-point support design, the rotation support mode of a single large bearing in CT equipment in related technology is adjusted to the rotation support mode of a plurality of distributed small bearings, and compared with the large bearings, the small bearings are lower in manufacturing difficulty and cost and more convenient to maintain and replace.

In addition, through setting up the mode of driving motor and drive wheel lug connection, can reduce the loss that the drive force transmission caused to can set up the different numbers that have drive motor's strutting arrangement to the rotatable portion of equidimension, satisfy the demand of different scenes, can reduce the equipment energy consumption of CT equipment.

As shown in fig. 4A and 4B, the supporting device 1' includes a pivotable arm 11, a pivot 12, and two rotating wheels, wherein the pivotable arm 11 is pivotably connected to the frame 110 through the pivot 12, at least two rotating wheels are disposed on the pivotable arm 11 and respectively located at two sides of a pivot axis 11AX of the pivotable arm 11, the two rotating wheels are driven wheels 13, and the rotatable part 2 can apply friction to the driven wheels 13 to rotate the driven wheels 13 during rotation.

In other alternative embodiments, the support means may comprise 3, 4 or more rotating wheels.

In some embodiments of the utility model, as shown in fig. 2A and 2B, the rotatable part comprises a rotatable body 22 and at least one rotatable track 21, the scanning device 3 is arranged on the rotatable body 22, and the plurality of support devices 1 are at least partially in contact with the at least one rotatable track 21, respectively. Specifically, the plurality of support devices 1 are respectively in contact with the outer peripheral surface portion of at least one rotatable rail 21.

Illustratively, the rotatable part 2 comprises two rotatable tracks 21, between which rotatable body 22 is sandwiched in a direction parallel to the rotational axis AX1 of the rotatable part 2, each of the two rotatable tracks 21 being supported by at least two support means 1, the at least two support means 1 being arranged below the rotatable tracks and on both sides of the rotational axis AX1 of the rotatable part 2.

The rotatable body 22 is sandwiched between the two rotatable rails 21, so that more stable support of the rotatable body 22 can be realized based on a simpler structure, and the center of gravity of the rotating part of the CT apparatus can be conveniently positioned between the two rotatable rails 21, thereby enhancing the running stability. That is, by providing the dual-track support structure, the rotation stability of the CT apparatus can be further improved based on a simpler structure, so that a more stable and clear CT image can be conveniently obtained.

According to the CT equipment provided by the embodiment of the utility model, the rotation stability of the ray source and the detector is effectively improved by arranging the distributed and self-adaptive multi-point support mode, so that the image quality of the CT equipment is improved, the detection accuracy is improved, and the service lives of all structural components of the CT equipment are prolonged.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents. Those skilled in the art will appreciate that the features recited in the various embodiments of the utility model and/or in the claims may be combined in various combinations and/or combinations, even if such combinations or combinations are not explicitly recited in the utility model. In particular, the features recited in the various embodiments of the utility model and/or in the claims can be combined in various combinations and/or combinations without departing from the spirit and teachings of the utility model. All such combinations and/or combinations fall within the scope of the utility model.

Claims (9)

1. A support device for a CT apparatus, the CT apparatus comprising a rotatable portion, the support device comprising:

a pivotable arm pivotably connected to a frame of the CT apparatus by means of a pivot, a drive motor and at least two rotating wheels arranged on the pivotable arm on both sides of the pivot axis of the pivotable arm,

at least one of the at least two rotating wheels is a driving wheel, the driving motor is directly connected with the driving wheel, the driving wheel can drive the rotatable part to rotate around the rotating axis, the driving motor comprises a power output shaft, and the power output shaft of the driving motor is parallel to the pivot.

2. The support device of claim 1, comprising two rotating wheels, wherein the pivot axis of the pivotable arm and the orthographic projection of the respective axes of rotation of the two rotating wheels on a first plane are substantially collinear, wherein the first plane is a plane perpendicular to the axis of rotation of the rotatable portion.

3. The support device of claim 2, further comprising a first bearing, a second bearing, and a third bearing, wherein the pivot is coupled to the frame, wherein the pivotable arm is coupled to the pivot via the first bearing, and wherein the two drive wheels are coupled to the pivotable arm via the second bearing and the third bearing, respectively.

4. A support device according to claim 3, wherein the drive wheel is sleeved on the power output shaft, and two third bearings are respectively sleeved on the power output shaft and located on two sides of the drive wheel.

5. A support device according to claim 3, wherein the orthographic projection of the drive motor on the first plane falls within the orthographic projection of the pivotable arm on the first plane.

6. The support device of claim 1, wherein the other of the at least two rotating wheels is a driven wheel, and wherein the rotatable portion is configured to apply a frictional force to the driven wheel to rotate the driven wheel during rotation.

7. Support device according to claim 1, wherein the perpendicular distance between the rotation axes of the two rotation wheels and the pivot axis of the pivotable arm is substantially equal.

8. A CT apparatus comprising a rotatable part and a support device according to any one of claims 1-7 for driving and supporting the rotatable part.

9. The CT apparatus of claim 8, comprising a plurality of the support devices, wherein an angle α is formed between a line between a pivot axis of the pivotable arm of the same support device and an orthographic projection of a rotational axis of the rotating wheel on a first plane and a vertical direction, the angle α being between 30 ° and 60 °, wherein the first plane is a plane perpendicular to a rotational axis of the rotatable portion.