CN112807012A

CN112807012A - CT scanning bed and CT machine

Info

Publication number: CN112807012A
Application number: CN202110189206.3A
Authority: CN
Inventors: 齐奇
Original assignee: Suzhou Shengnuo Medical Technology Co ltd
Current assignee: Suzhou Shengnuo Medical Technology Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-05-18

Abstract

The invention provides a CT scanning bed and a CT machine, wherein the CT scanning bed comprises: the horizontal movement mechanism is arranged in the base; the lifting mechanism comprises: the base plate is arranged on the base and connected with the horizontal movement mechanism; the vertical plate is vertically connected with the bottom plate, the first inclined block is horizontally slidably arranged on the bottom plate, the second inclined block is vertically slidably arranged on the vertical plate, and the inclined surface of the second inclined block is abutted to the inclined surface of the first inclined block; the first driving piece is in transmission connection with the first inclined block and is used for driving the first inclined block to move horizontally so as to drive the second inclined block to move up and down; the bed board is arranged on the top surface of the second inclined block. The lifting of the bed plate is adjusted by the mutual matching of the two inclined blocks, the structure is simple, the operability is strong, the required space is small, the invalid length is reduced, the overall size of the CT machine is small, the center of gravity is reduced, and the stability is improved.

Description

CT scanning bed and CT machine

Technical Field

The invention relates to the technical field of CT scanning, in particular to a CT scanning bed and a CT machine.

Background

In recent years, with the rapid development of Computed Tomography (CT) technology, the diagnostic capability and scanning speed of CT are significantly improved, and the clinical application range of CT is greatly expanded. CT scanning beds are key components in CT machines for carrying a patient, typically with both vertical and horizontal motion. The vertical movement is mainly used for adjusting the position of the patient and facilitating the up and down movement of the patient; the horizontal movement can realize scanning modes such as fault, spiral and plain film.

In the prior art, a scanning bed comprises a base, a lifting mechanism, a horizontal movement mechanism and a bed board; the lifting mechanism is a parallelogram connecting rod structure connected between the base and the bed plate, the lifting driving is generally completed by a linear push rod, due to the motion characteristic of the quadrilateral connecting rod structure, the lifting process of the scanning bed is accompanied with the back and forth movement of the scanning bed, the stroke of the back and forth movement is used as an invalid length to increase the whole length of the scanning bed, the occupied area of the CT machine is increased, the scanning ring can scan when the scanning bed needs to be in invalid translation, and the efficiency is reduced. And the horizontal movement mechanism is generally arranged at the lower part of the bed plate and directly drives the bed plate to translate, so that the center of the scanning bed is inclined upwards, and the stability is poor.

Disclosure of Invention

The present invention is directed to a battery module fixing structure, a battery module and a battery pack, which can solve at least one of the above-mentioned problems. The specific scheme is as follows:

according to an embodiment of the present invention, in a first aspect, the present invention provides a CT scanning bed, comprising: the bed comprises a base, a lifting mechanism, a horizontal movement mechanism and a bed board, wherein the horizontal movement mechanism is arranged in the base; the lifting mechanism comprises: the base plate is arranged on the base and connected with the horizontal movement mechanism; the vertical plate is vertically connected with the bottom plate, the first inclined block is horizontally slidably arranged on the bottom plate, the second inclined block is vertically slidably arranged on the vertical plate, and the inclined surface of the second inclined block is abutted to the inclined surface of the first inclined block; the first driving piece is in transmission connection with the first inclined block and is used for driving the first inclined block to move horizontally so as to drive the second inclined block to move up and down; the bed board is arranged on the top surface of the second inclined block.

Optionally, the lifting mechanism further comprises: the first screw rod, the bearing seat and the first nut;

the bearing seat is arranged on the bottom plate,

one end of the first lead screw is connected with the first driving piece, and the other end of the first lead screw is rotatably limited in the bearing seat;

the first screw nut is sleeved on the first screw rod and connected with the first inclined block, and when the first screw rod rotates, the first screw nut moves horizontally to drive the first inclined block to slide.

Optionally, the first lead screw is a trapezoidal lead screw, and the first nut is an adaptive trapezoidal nut.

Optionally, a first slide rail matched with the first inclined block is arranged on the bottom plate, and a second slide rail matched with the second inclined block is arranged on the vertical plate.

Optionally, a guide rail soft belt is arranged on the inclined surface of the first inclined block and the inclined surface of the second inclined block.

Optionally, the first driving member includes a variable frequency motor and a speed reducer, and an output shaft of the variable frequency motor is connected to one end of the first lead screw through the speed reducer.

Optionally, a linear guide rail is arranged on the top surface of the base, and the bottom plate is arranged on the linear guide rail and connected with the horizontal movement mechanism.

Optionally, the horizontal movement mechanism comprises: the second driving piece, the second lead screw and the second nut;

the second driving piece is connected with the second lead screw and used for driving the second lead screw to rotate;

and the second screw nut is sleeved on the second screw rod and connected with the bottom plate, and when the second screw rod rotates, the second screw nut moves horizontally to drive the bottom plate to move horizontally.

Optionally, the second lead screw is a ball screw.

According to a second aspect, the present invention provides a CT machine comprising a CT scanning table according to any one of the above-mentioned embodiments.

Compared with the prior art, the embodiment of the invention has the following technical effects:

the invention adjusts the lifting of the bed plate by the mutual matching of the two inclined blocks, has simple structure, strong operability and smaller required space, reduces invalid length and ensures that the whole size of the CT machine is smaller. And set up horizontal movement mechanism on the base, directly set up in the bed board below with prior art and compare and reduced the focus, improved stability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic structural diagram of a CT scanning bed according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a lifting mechanism in a CT scanning bed according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a horizontal movement mechanism in a CT scanning bed according to an embodiment of the present invention.

Description of reference numerals:

1-base, 2-lifting mechanism, 21-bottom plate, 22-vertical plate, 23-first inclined block, 24-second inclined block, 25-first driving piece, 26-first screw, 27-first screw, 28-bearing seat, 3-horizontal movement mechanism, 31-second driving piece, 32-second screw, 33-second screw, 4-bed plate and 5-linear guide rail.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention 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, and "a plurality" typically includes at least two.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The words "if", as used herein may be interpreted as "at the time" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, the recitation of an element by the phrase "comprising a" does not exclude the presence of additional like elements in a commodity or device comprising the element.

Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example 1

According to an embodiment of the present invention, there is provided a CT scanning table, as shown in fig. 1 and 2, comprising: the bed comprises a base 1, a lifting mechanism 2, a horizontal movement mechanism 3 and a bed board 4, wherein the horizontal movement mechanism 3 is arranged in the base 1; the lifting mechanism 2 includes: the base plate 21 is arranged on the base 1 and is connected with the horizontal movement mechanism 3; the vertical plate 22 is vertically connected with the bottom plate 21, the first inclined block 23 is horizontally slidably arranged on the bottom plate 21, the second inclined block 24 is vertically slidably arranged on the vertical plate 22, and the inclined surface of the second inclined block 24 is abutted to the inclined surface of the first inclined block 23; the first driving piece 25 is in transmission connection with the first inclined block 23 and is used for driving the first inclined block 23 to move horizontally so as to drive the second inclined block 24 to move up and down; the bed plate 4 is arranged on the top surface of the second sloping block 24.

When the bed is used, the lifting mechanism 2 and the bed board 4 on the base 1 are driven to move horizontally by the horizontal movement of the horizontal movement mechanism 3 arranged on the base, so that the adjustment in the horizontal direction is completed. When the adjustment in the vertical direction is performed, the first inclined block 23 is driven by the first driving member 25 to move horizontally on the bottom plate 21, the second inclined block 24 abuts against the inclined surface of the first inclined block 23, and when the first inclined block 23 moves horizontally, the first inclined block 23 moves up and down. When the first inclined block 23 moves leftward with reference to the direction shown in fig. 1, the second inclined block 24 moves upward; when the first swash block 23 moves to the right, the first swash block 23 moves downward. The second inclined block 24 is driven to move up and down by the horizontal movement of the first inclined block 23, so that the lifting of the bed plate 4 is controlled.

Therefore, the CT scanning bed provided by the embodiment of the invention adjusts the lifting of the bed plate 4 by the mutual matching of the two inclined blocks, has simple structure and strong operability, requires smaller space, reduces invalid length and ensures that the whole size of the CT machine is smaller. And set up horizontal movement mechanism 3 on base 1, directly set up in bed board 4 below with prior art and compare and reduced the focus, improved stability.

Wherein, the horizontal movement stroke of the first inclined block 23 and the vertical movement stroke of the second inclined block 24 are in proportion, and the magnitude of the ratio is related to the gradient of the inclined surface. The lower the gradient of the first swash block 23, the larger the stroke ratio of the first swash block 23 to the second swash block 24, and accordingly, the higher the elevation adjustment accuracy of the second swash block 24. Therefore, the lifting adjustment is carried out by adopting the structure, the adjustment precision of the lifting process is convenient to control, and the control precision of the lifting motion is improved.

In some optional implementations of the present embodiment, as shown in fig. 2, the lifting mechanism 2 further includes: a first lead screw 26, a bearing block 28 and a first nut 27; the bearing seat 28 is arranged on the bottom plate 21, one end of the first lead screw 26 is connected with the first driving part 25, and the other end is rotatably limited in the bearing seat 28; first screw 27 suit is on first lead screw 26 to be connected with first sloping block 23, when first lead screw 26 rotated, first screw 27 horizontal motion drove first sloping block 23 and slides.

So set up, bearing frame 28 plays support and limiting displacement to first lead screw 26, keeps first lead screw 26 to keep straight rotation all the time. When the first lead screw 26 rotates, the first screw 27 sleeved on the first lead screw is driven to translate, and then the first inclined block 23 is driven to horizontally slide. The first inclined block 23 is driven to translate in a lead screw transmission mode, the movement process is smooth, and the control precision can be improved.

After the bed plate 4 is lifted and adjusted to a certain position, the bed plate should be kept at a fixed height, and in order to avoid the lifting structure from sliding downwards under the action of the gravity of the bed plate 4 and a human body, the first screw rod 26 is a trapezoidal screw rod, and the first screw nut 27 is a matched trapezoidal screw nut. The trapezoidal lead screw has a self-locking function because the lead angle of the trapezoidal lead screw is larger than the static friction angle. That is, the first screw 26 can drive the first nut 27 to translate on the first screw 26 when rotating, and the pressure acting on the first nut 27 cannot make the first nut 27 retract on the first screw 26, so that the bed board 4 has a self-locking function, and the bed board 4 is kept at a fixed height after the lifting adjustment is finished, thereby completing the CT scanning process.

Alternatively, the first driving member 25 may include a variable frequency motor and a speed reducer, and an output shaft of the variable frequency motor is connected to one end of the first lead screw 26 through the speed reducer, so as to improve the control accuracy.

The first driving member 25 may be disposed on the bottom plate 21 or on the side plate, and only needs to be located at two ends of the first lead screw 26 respectively with the bearing seat 28 to drive the first lead screw 26 to rotate, where fig. 1 and 2 show a situation where the first driving member 25 is disposed on the side plate.

It should be understood that the first driving member 25 may also be in other forms as long as it can drive the first incline block 23 to slide horizontally, for example, it may be a cylinder or a hydraulic cylinder connected to the first incline block 23, and will not be described herein again.

In some optional implementations of this embodiment, the bottom plate 21 may be provided with a first slide rail adapted to the first inclined block 23, and the vertical plate 22 is provided with a second slide rail adapted to the second inclined block 24. So set up, be convenient for first sloping block 23 and the slip of second sloping block 24 to can carry out spacing improvement stability to first sloping block 23 and second sloping block 24.

In some optional implementations of the present embodiment, the first inclined block 23 and the second inclined block 24 may be provided with a guide rail soft belt on the inclined surface. In this way, the frictional resistance between the first and second swash blocks 23 and 24 is reduced, facilitating the relative sliding of the first and second swash blocks 23 and 24.

In this embodiment, the bottom plate 21 is connected to the horizontal movement mechanism 3, and is driven by the horizontal movement mechanism 3 to translate on the base 1. In order to facilitate the movement of the base plate 21, the top surface of the base 1 is provided with a linear guide 5, and the base plate 21 is disposed on the linear guide 5 and connected to the horizontal movement mechanism 3.

In some alternative implementations of the present embodiment, as shown in fig. 3, the horizontal movement mechanism 3 includes: a second driving member 31, a second lead screw 32, and a second nut 33; the second driving piece 31 is connected with the second lead screw 32 and is used for driving the second lead screw 32 to rotate; the second screw nut 33 is sleeved on the second screw rod 32 and connected with the bottom plate 21, and when the second screw rod 32 rotates, the second screw nut 33 moves horizontally to drive the bottom plate 21 to move horizontally.

When the second screw rod 32 rotates, the second screw nut 33 sleeved on the second screw rod is driven to translate, and then the bottom plate 21 is driven to horizontally slide. The bottom plate 21 is driven to translate in a screw transmission mode to perform horizontal movement adjustment, the movement process is smooth, and the control precision can be improved.

In some optional implementation manners of this embodiment, the second screw 32 may be a ball screw, so that rolling friction is generated between the second screw 32 and the second nut 33, the friction coefficient is small, and the CT table has the advantages of fast dynamic response, high precision and the like, and is suitable for use conditions of frequent horizontal movement of the CT table during use.

Referring to fig. 1, a groove may be formed on the base 1, the bottom plate 21 is located in the linear guide 5 on the top surface of the base 1, and the second lead screw 32 and the second nut 33 are located in the groove, that is, the second nut 33 is connected to the bottom surface of the bottom plate 21. At this time, two ends of the second lead screw 32 may be respectively limited in the base 1. The second driving member 31 may be disposed on a side surface of the base 1 and connected to the second lead screw 32 to drive the second lead screw 32 to rotate.

The second driving member 31 may be a servo motor or a stepping motor, as long as it can drive the bottom plate 21 to move horizontally.

In another alternative implementation manner, the bottom plate 21 may also be pushed to move horizontally by the telescopic motion of the telescopic cylinder, and the horizontal adjustment process may also be completed, which is not described herein again.

Example 2

The same structure in this embodiment as that in embodiment 1 is not described in detail, and the same structural parts have the same technical effects and are not described in detail. According to an embodiment of the present invention, there is provided a CT machine including the CT scanning table of any one of the above.

The CT machine that this embodiment provided, through the scanning bed that adopts above-mentioned structure, mutually support through two sloping blocks and adjust the lift of bed board 4, simple structure maneuverability is strong, and required space is less, has reduced invalid length, makes CT machine's whole size less. And set up horizontal movement mechanism 3 on base 1, directly set up in bed board 4 below with prior art and compare and reduced the focus, improved stability.

Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The system or the device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.

Claims

1. A CT scanning bed comprising: a base, a lifting mechanism, a horizontal movement mechanism and a bed board, which is characterized in that,

the horizontal movement mechanism is arranged in the base;

the lifting mechanism comprises: the base plate is arranged on the base and connected with the horizontal movement mechanism; the vertical plate is vertically connected with the bottom plate, the first inclined block is horizontally slidably arranged on the bottom plate, the second inclined block is vertically slidably arranged on the vertical plate, and the inclined surface of the second inclined block is abutted to the inclined surface of the first inclined block; the first driving piece is in transmission connection with the first inclined block and is used for driving the first inclined block to move horizontally so as to drive the second inclined block to move up and down;

the bed board is arranged on the top surface of the second inclined block.

2. The CT scanning bed of claim 1, wherein the lifting mechanism further comprises: the first screw rod, the bearing seat and the first nut;

the bearing seat is arranged on the bottom plate,

3. The CT scanning bed of claim 2, wherein the first lead screw is a trapezoidal lead screw and the first nut is a matching trapezoidal nut.

4. The CT scanning bed of claims 1-3, wherein the bottom plate is provided with a first slide rail adapted to the first sloping block, and the vertical plate is provided with a second slide rail adapted to the second sloping block.

5. The CT scanning bed of any one of claims 1-3, wherein the first and second swash blocks are provided with guide rail soft belts on the inclined surfaces.

6. The CT scanning bed of claim 2, wherein the first driving member comprises a variable frequency motor and a speed reducer, and an output shaft of the variable frequency motor is connected to one end of the first lead screw through the speed reducer.

7. The CT scanning bed of claim 1, wherein the top surface of the base is provided with a linear guide, and the bottom plate is disposed on the linear guide and connected to the horizontal motion mechanism.

8. The CT scanning bed of claim 1 or 7, wherein the horizontal motion mechanism comprises: the second driving piece, the second lead screw and the second nut;

9. The CT scanning bed of claim 8, wherein the second lead screw is a ball screw.

10. A CT machine comprising a CT scanning table according to any of claims 1 to 9.