阅读说明：本技术 一种x射线设备的床体移动机构 (Bed body moving mechanism of X-ray equipment ) 是由 罗大亮 黄业同 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种X射线设备的床体移动机构,包括床体组件,还包括：升降架,沿竖向设有第一导轨和第二导轨；滑架,设置在所述第一导轨和所述第二导轨之间,所述滑架的一侧设置有滑块,所述滑块滑动连接所述第一导轨,所述滑架的另一侧设置有滑轮组,所述滑轮组包括两组滑轮且分别抵接所述第二导轨的两个侧面；回转轴承,包括相互配合的内圈和外圈,所述外圈设有啮合齿,所述内圈固定在所述滑架一侧；旋转座,后侧与所述外圈固定连接,前侧适于固定所述床体组件；第一驱动装置,设置在所述滑架上,所述第一驱动装置的输出端设有驱动齿轮,所述驱动齿轮与所述外圈啮合；第二驱动装置,适于驱使所述滑架相对所述升降架做升降运动。本发明通过第一驱动装置控制床体组件的旋转,通过第二驱动装置控制床体组件的升降,实现X射线设备的自由旋转以及升降,大大提高了X射线设备的使用灵活性,满足医生检查时需要的不同角度与位置的操作要求。(The invention discloses a bed body moving mechanism of X-ray equipment, which comprises a bed body component and also comprises: the lifting frame is vertically provided with a first guide rail and a second guide rail; the sliding frame is arranged between the first guide rail and the second guide rail, one side of the sliding frame is provided with a sliding block which is connected with the first guide rail in a sliding way, the other side of the sliding frame is provided with a pulley block, and the pulley block comprises two groups of pulleys and is respectively abutted against two side surfaces of the second guide rail; the rotary bearing comprises an inner ring and an outer ring which are matched with each other, the outer ring is provided with meshing teeth, and the inner ring is fixed on one side of the sliding frame; the rear side of the rotating seat is fixedly connected with the outer ring, and the front side of the rotating seat is suitable for fixing the bed body assembly; the first driving device is arranged on the sliding frame, and the output end of the first driving device is provided with a driving gear which is meshed with the outer ring; and the second driving device is suitable for driving the sliding frame to do lifting motion relative to the lifting frame. According to the X-ray bed, the rotation of the bed body assembly is controlled through the first driving device, the lifting of the bed body assembly is controlled through the second driving device, the free rotation and lifting of the X-ray equipment are realized, the use flexibility of the X-ray equipment is greatly improved, and the operation requirements of different angles and positions required by a doctor during examination are met.)

1. The utility model provides a bed body moving mechanism of X ray equipment, includes the bed body subassembly, its characterized in that still includes:

the lifting frame is vertically provided with a first guide rail and a second guide rail;

the sliding frame is arranged between the first guide rail and the second guide rail, one side of the sliding frame is provided with a sliding block which is connected with the first guide rail in a sliding way, the other side of the sliding frame is provided with a pulley block, the pulley block comprises two groups of pulleys, and the two groups of pulleys are respectively abutted against two side surfaces of the second guide rail;

the rotary bearing comprises an inner ring and an outer ring which are matched with each other, the outer ring is provided with meshing teeth, and the inner ring is fixed on one side of the sliding frame;

the rear side of the rotating seat is fixedly connected with the outer ring, and the front side of the rotating seat is suitable for fixing the bed body assembly;

the first driving device is arranged on the sliding frame, and the output end of the first driving device is provided with a driving gear which is meshed with the outer ring;

and the second driving device is suitable for driving the sliding frame to do lifting motion relative to the lifting frame.

2. The bed moving mechanism of an X-ray apparatus as claimed in claim 1, wherein the first driving device comprises:

a first drive motor;

the speed reducer mounting plate is arranged on the sliding frame and is provided with a through hole;

the first speed reducer is connected with the output end of the first driving motor, the first speed reducer is provided with a first gear shaft, one end of the first gear shaft penetrates through the through hole and is connected with the driving gear, the first gear shaft is provided with a bearing piece, and the bearing piece is abutted against the inner wall of the through hole;

and the stroke detection mechanism is connected with the other end of the first gear shaft and is suitable for detecting the rotation angle of the first gear shaft.

3. The bed moving mechanism of an X-ray apparatus as claimed in claim 2, wherein the stroke detecting mechanism comprises:

the rotating control gear is connected with the other end of the first gear shaft;

the first potentiometer is provided with a potentiometer driven wheel, and the potentiometer driven wheel is meshed with the rotary control gear.

4. The bed moving mechanism of an X-ray apparatus as claimed in claim 3, further comprising:

the optical coupling driven wheel is meshed with the rotary control gear;

the optical coupler is arranged on one side of the optical coupler driven wheel;

the light shielding plate is fixed on the optocoupler driven wheel and extends towards the outer side, and the light shielding plate is suitable for shielding the optocoupler.

5. The bed moving mechanism of an X-ray apparatus as claimed in claim 4, further comprising:

a limit switch;

and the collision block is arranged on the optocoupler driven wheel and is suitable for rotating along with the optocoupler driven wheel and pressing or keeping away from the limit switch.

6. The bed moving mechanism of an X-ray apparatus as claimed in claim 1, wherein the lifting frame is vertically provided with a lifting rack, the second driving device is disposed on the carriage, and an output end of the second driving device is provided with a lifting gear engaged with the lifting rack.

7. The bed moving mechanism of an X-ray apparatus as claimed in claim 6, wherein the second driving device comprises:

a second drive motor;

the second speed reducer is connected with the output end of the second driving motor, the second speed reducer is provided with a second gear shaft, and the lifting gear is arranged at one end of the second gear shaft;

and the second potentiometer is connected and arranged at the other end of the second gear shaft.

8. The bed body moving mechanism of an X-ray apparatus as claimed in claim 1, wherein the second gear shaft is provided with a key groove along a length direction, a flat key is arranged in the key groove, the one end of the second gear shaft is provided with a deep groove ball bearing, and the deep groove ball bearing abuts against an inner wall of the second reducer.

9. The bed moving mechanism of an X-ray apparatus as claimed in claim 1, wherein the sliding block and the pulley block each comprise two sets disposed on upper and lower sides of the sliding frame.

10. The bed moving mechanism of an X-ray apparatus as claimed in claim 1, wherein the bed assembly comprises a mounting beam, the front side of the rotary base extends forward to form a lap joint, and the mounting beam is fixed on the lap joint.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a bed body moving mechanism of X-ray equipment.

Background

The medical X-ray equipment is one of the equipment with more common clinical application, adopts X-rays as a detection and diagnosis basis, controls the equipment which is used for carrying out radio examination and radiotherapy on human tissues by the X-rays, and can help doctors to judge the specific state of illness of patients. The bed surface is usually placed horizontally, the setting angle of the bed surface is relatively fixed, the bed surface is difficult to adjust freely, a user needs to lie on the bed surface to shoot the X-ray, meanwhile, the height of the bed body is usually fixed and difficult to adjust, if the height of the bed surface is too high, the patient is difficult to lie on a diagnosis bed to shoot, if the bed surface is too low, the problem that a doctor is difficult to operate and position for the patient in the operation process can exist, and therefore the existing medical X-ray equipment is difficult to meet different height requirements of different users.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a bed body moving mechanism of X-ray equipment, which realizes free rotation and lifting of a bed body assembly.

According to an embodiment of the present invention, a bed moving mechanism of an X-ray apparatus includes a bed assembly, and further includes: the lifting frame is vertically provided with a first guide rail and a second guide rail; the sliding frame is arranged between the first guide rail and the second guide rail, one side of the sliding frame is provided with a sliding block, the sliding block is connected with the first guide rail in a sliding manner, the other side of the sliding frame is provided with a pulley block, and the pulley block comprises two groups of pulleys and is respectively abutted against two side surfaces of the second guide rail; the rotary bearing comprises an inner ring and an outer ring which are matched with each other, the outer ring is provided with meshing teeth, and the inner ring is fixed on one side of the sliding frame; the rear side of the rotating seat is fixedly connected with the outer ring, and the front side of the rotating seat is suitable for fixing the bed body assembly; the first driving device is arranged on the sliding frame, and the output end of the first driving device is provided with a driving gear which is meshed with the outer ring; and the second driving device is suitable for driving the sliding frame to do lifting motion relative to the lifting frame.

The bed body moving mechanism of the X-ray equipment provided by the embodiment of the invention at least has the following beneficial effects: according to the X-ray bed, the rotation of the bed body assembly is controlled through the first driving device, the lifting of the bed body assembly is controlled through the second driving device, the free rotation and lifting of the X-ray equipment are realized, the use flexibility of the X-ray equipment is greatly improved, and the operation requirements of different angles and positions required by a doctor during examination are met.

According to some embodiments of the invention, the first driving means comprises: a first drive motor; the speed reducer mounting plate is arranged on the sliding frame and is provided with a through hole; the first speed reducer is connected with the output end of the first driving motor and provided with a first gear shaft, one end of the first gear shaft penetrates through the through hole and is connected with the driving gear, and the gear shaft is provided with a bearing piece which is abutted against the inner wall of the through hole; and the stroke detection mechanism is connected with the other end of the first gear shaft and is suitable for detecting the rotation angle of the first gear shaft.

According to some embodiments of the invention, the stroke detection mechanism comprises: the rotary control gear is connected with the other end of the first gear shaft; the first potentiometer is provided with a potentiometer driven wheel, and the potentiometer driven wheel is meshed with the rotation control gear.

According to some embodiments of the invention, further comprising: the optical coupling driven wheel is meshed with the rotary control gear; the optical coupler is arranged on one side of the optical coupler driven wheel; the light screen, the light screen is fixed and is followed the driving wheel and extend towards the lateral extension at the opto-coupler, and the light screen is suitable for sheltering from the opto-coupler.

According to some embodiments of the invention, further comprising: a limit switch; and the collision block is arranged on the optocoupler driven wheel and is suitable for rotating along with the optocoupler driven wheel and pressing or keeping away from the limit switch.

According to some embodiments of the invention, the lifting frame is vertically provided with a lifting rack, the second driving device is arranged on the carriage, and the output end of the second driving device is provided with a lifting gear meshed with the lifting rack.

According to some embodiments of the invention, the second driving means comprises: a second drive motor; the second speed reducer is connected with the output end of the second driving motor and is provided with a second gear shaft, and the lifting gear is arranged at one end of the second gear shaft; and the second potentiometer is connected with the other end of the second gear shaft.

According to some embodiments of the invention, the second gear shaft is provided with a key groove along a length direction, a flat key is arranged in the key groove, and one end of the second gear shaft is provided with a deep groove ball bearing which abuts against an inner wall of the second speed reducer.

According to some embodiments of the invention, the slide and the pulley block each comprise two sets arranged on the upper and lower sides of the carriage, respectively.

According to some embodiments of the invention, the bed assembly comprises a mounting beam, the front side of the swivel base is provided with a lap joint extending forwards, and the mounting beam is fixed on the lap joint.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic front view of a bed moving mechanism of the X-ray apparatus of this embodiment;

FIG. 2 is a schematic view of a back structure of the bed moving mechanism in this embodiment;

FIG. 3 is an exploded view of the carriage and the rotary base according to the present embodiment;

fig. 4 is an exploded view of the carriage and the rotary base at another view angle in the present embodiment;

fig. 5 is a sectional view of the first reduction gear;

FIG. 6 is a schematic structural view of a stroke detection mechanism;

fig. 7 is a sectional view of a second reducer;

FIG. 8 is a schematic view of the X-ray apparatus of the present embodiment in a horizontal state;

FIG. 9 is a schematic view of the X-ray apparatus of the present embodiment in an inverted state;

reference numerals: a bed assembly 100; a mounting beam 110; a lifting frame 200; a first guide rail 201; a second guide rail 202; a lifting rack 203; a carriage 300; a slider 301; a pulley block 302; a rotary base 400; a receiving groove 401; a lap joint 402; a first driving device 500; a drive gear 501; a first drive motor 510; a reducer mounting plate 520; a through hole 521; a first speed reducer 530; a first gear shaft 531; bearing member 532; an end cap 533; a stroke detection mechanism 540; a rotation control gear 541; a first potentiometer 542; a potentiometer driven wheel 543; an opto-coupler driven wheel 544; an optical coupler 545; a light shield 546; a limit switch 547; a bump block 548; a second driving device 600; a lifting gear 601; a second drive motor 610; a second reducer 620; a second gear shaft 621; a flat key 622; deep groove ball bearings 623; a second potentiometer 630; a slew bearing 700; an inner ring 701; an outer ring 702.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "lateral", "longitudinal", "vertical", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," 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.

Referring to fig. 1, 2, 3, and 4, a bed moving mechanism of an X-ray apparatus according to an embodiment of the present invention includes a bed assembly 100, where the bed assembly 100 in this embodiment includes a mounting beam 110, and an X-ray tube, a cassette assembly, and a bed surface that are disposed on the mounting beam 110, and further includes: the lifting frame 200 comprises four vertically arranged rectangular columns, the four columns are arranged in a rectangular manner in a surrounding manner, the lifting frame 200 is vertically provided with a first guide rail 201 and a second guide rail 202, and the first guide rail 201 and the second guide rail 202 are respectively arranged on the left column and the right column of the lifting frame 200; the sliding frame 300 is arranged between the first guide rail 201 and the second guide rail 202, a sliding block 301 is arranged on the right side of the sliding frame 300, the sliding block 301 is connected with the first guide rail 201 in a sliding mode, a pulley block 302 is arranged on the left side of the sliding frame 300, the pulley block 302 comprises two groups of pulleys arranged in the front and at the back, the pulleys are rotatably arranged on the sliding frame 300 through rotating shafts, and the two groups of pulleys are respectively abutted to two side faces of the second guide rail 202; the slewing bearing 700 comprises an inner ring 701 and an outer ring 702 which are matched with each other, wherein the inner ring 701 and the outer ring 702 are matched and connected through balls, the outer ring 702 can rotate relative to the inner ring 701, the specific matching mode is a common matching mode of bearing parts in the prior art, the invention is not described in detail, the outer ring 702 is provided with meshing teeth, and the inner ring 701 is fixed on the front side of the sliding frame 300 through bolt parts; the rear side of the rotary base 400 is fixedly connected with the front surface of the outer ring 702 through bolts, and the front side of the rotary base 400 is suitable for fixing the bed body assembly 100; a first driving device 500, the first driving device 500 being disposed on the carriage 300, an output end of the first driving device 500 being provided with a driving gear 501, the driving gear 501 being engaged with an outer ring 702 of the slewing bearing 700; a second driving device 600, wherein the second driving device 600 is suitable for driving the sliding rack 300 to do lifting motion relative to the lifting rack 200.

The bed body moving mechanism of the X-ray equipment provided by the embodiment of the invention at least has the following beneficial effects: the driving device drives the sliding frame to vertically move along the first guide rail and the second guide rail, wherein one side of the sliding frame is matched with the first guide rail through the sliding block to ensure the lifting precision, and the other side of the sliding frame is matched with the second guide rail through the pulley block to greatly facilitate installation and scheduling on the premise of ensuring the precision. According to the invention, the bed body assembly is arranged on the rotating seat, the rotating seat is rotatably connected with the sliding frame through the rotary bearing, and the outer ring of the rotary bearing is driven to move together with the rotating seat by the first driving device, so that the bed body assembly rotates relative to the sliding frame; utilize second drive arrangement to order about the balladeur train simultaneously and do vertical motion along first guide rail and second guide rail, wherein the precision that goes up and down is guaranteed through the cooperation of slider with first guide rail in one side of balladeur train, and the opposite side passes through the assembly pulley and the cooperation of second guide rail very big easy to assemble dispatch under the prerequisite of guaranteeing the precision, realizes the elevating movement of control bed body subassembly. Referring to fig. 8 and 8, the invention can realize 360-degree rotation of the bed body assembly, in the actual use process, the sliding frame and the bed body assembly can be controlled to move upwards to the highest position, the bed surface can be perpendicular to the ground only by controlling the bed body assembly to rotate 90 degrees, the bed body assembly is ensured not to collide with the ground in the rotation process, the standing shooting of a user is realized, the invention has the advantages of high use flexibility, stable and accurate rotation and the like, the operation requirements of different angles and positions required by the user during examination can be met, meanwhile, the bed surface assembly can also be lifted and simultaneously performs rotary motion, and the linkage function of the X-ray equipment is ensured.

In some embodiments of the present invention, referring to fig. 2, 3, and 4, the first driving device 500 includes: a first drive motor 510; a first reducer 530, an input end of the first reducer 530 being connected to an output end of the first drive motor 510, the first reducer 530 being provided with a first gear shaft 531, the first gear shaft 531 being arranged in a horizontal direction, the drive gear 501 being arranged at a front end of the first gear shaft 531; the stroke detection mechanism 540 is arranged on the first speed reducer 530 and connected with the rear end of the first gear shaft 531, and the stroke detection mechanism 540 is used for detecting the rotation angle of the first gear shaft 531, so that the rotation number of the driving gear 501 is recorded, the rotation angle of the rotating base 400 is indirectly reflected, and the overturning angle of the bed control body assembly 100 is convenient to adjust. Wherein, first driving motor 510 and first speed reducer 530 are all fixed on balladeur train 300, drive gear 501 and first gear shaft 531 integrated into one piece, still include synchronizing wheel and hold-in range simultaneously, the synchronizing wheel includes two sets ofly and sets up the input at the output of first driving motor 510 and first speed reducer 530 respectively, the hold-in range is around establishing two sets of synchronizing wheels, first driving motor 510 orders about first speed reducer 530 through synchronizing wheel and hold-in range and operates, first speed reducer 530 orders about first gear shaft 531 and drive gear 501 corotation, guarantee the stable even output of rotational speed, be convenient for control roating seat 400's turned angle. Further, the speed reducer mounting plate 520 is arranged on the sliding frame 300, the speed reducer mounting plate 520 is fixed to the rear side of the sliding frame 300 through bolts, through holes 521 are formed in the speed reducer mounting plate 520, the speed reducer is fixed to the speed reducer mounting plate 520 through the bolts, the through holes 521 are formed in one end of the first gear shaft 531 in a penetrating mode, the bearing 532 abuts against the inner wall of the through holes 521, in more detail, the bearing 532 is a deep groove ball bearing 623, the bearing 532 comprises two groups of bearing parts and is respectively arranged at two ends of each through hole 521 along the length direction of each through hole 521, the outer side of each bearing part 532 is fixed through elastic check rings through the through holes, through the design of using the double deep groove ball bearing 623 to accelerate and decelerate the speed reducer mounting plate 520, the excessive tangential force applied to the first gear shaft 531 due to overlong output shafts is effectively reduced, and the rotation is achieved, and the rotation of the bearing parts 532 is enabled to be more stable.

Preferably, referring to fig. 5 and 6, an end cover 533 is disposed at a rear end of the first gear shaft 531, the end cover 533 is connected to the first gear shaft 531 through a bolt and abuts against an outer wall of the first speed reducer 530, and the end cover 533 is disposed to limit a horizontal degree of freedom of the first gear shaft 531, so as to prevent the first gear shaft 531 from being displaced in a self-axial direction, and ensure stability of assembly.

In some embodiments of the present invention, referring to fig. 5 and 6, the stroke detection mechanism 540 includes: a rotation control gear 541, the rotation control gear 541 is connected to the rear end of the first gear shaft 531 and can rotate together with the first gear shaft 531; first potentiometre 542, first potentiometre 542 is provided with the potentiometre from driving wheel 543, the potentiometre is from driving wheel 543 and the meshing of commentaries on classics accuse gear 541, wherein, the rear end of first speed reducer 531 is provided with the potentiometre mounting panel, first potentiometre 542 is fixed on the potentiometre mounting panel, the rotation of first gear shaft 531 drives potentiometre from driving wheel 531 rotation through changeing accuse gear 541, first potentiometre 542 changes voltage along with the rotation of potentiometre from driving wheel 543, the angle of rotation embodies on the change value of voltage, thereby reflect the rotation angle of roating seat 400 indirectly, realize the control of bed body subassembly turned angle.

In some embodiments of the present invention, referring to fig. 5 and 6, the stroke detection mechanism 540 further comprises: the optical coupling driven wheel 544 is meshed with the rotary control gear 541; the optical coupler 545, the optical coupler 545 is arranged on one side of the optical coupler driven wheel 544; the light screen 546, the light screen 546 is fixed on the opto-coupler driven wheel 544 and extends to the outside, the light screen 546 is suitable for following the opto-coupler driven wheel 544 and rotate and shelter from the opto-coupler 545, in more detail, when first drive arrangement 500 ordered about the bed body subassembly and rotated, first gear shaft 531 drove the opto-coupler driven wheel 544 and rotate together, through setting up the opto-coupler 545 in corresponding position, can realize that the bed body subassembly rotates the light screen 546 that drives the opto-coupler from the driven wheel 544 and just block the opto-coupler 545 in the position that needs the protection, realize the stopping and the protection of motion.

In some embodiments of the present invention, referring to fig. 5 and 6, the stroke detection mechanism 540 further comprises: a limit switch 547; bump 548, bump 548 sets up on the opto-coupler follows driving wheel 544, bump 548 is suitable for along with the opto-coupler follow driving wheel 544 rotate and pressfitting or keep away from limit switch 547, in this embodiment, limit switch 547 is the normal close wiring, when normal motion, bump 548 pressfitting limit switch 547, when the bed body subassembly unexpected out of control appears, bump 548 along with the opto-coupler follow driving wheel 544 together rotate and exceed limit switch 547's pressfitting position, bump 548 and limit switch 547 separation this moment, limit switch 547 control bed body outage, prevent unexpected emergence.

In some embodiments of the present invention, referring to fig. 3 and 4, a receiving groove 401 is recessed inward at a rear side of the rotary base 400, and the outer ring 702 is fixed in the receiving groove 401 by a bolt; the rotary base 400 is provided with the accommodating groove 401 for assembling the rotary bearing 700, so that the assembling precision and the structure are ensured to be compact.

In some embodiments of the invention, referring to fig. 2 and 7, the lifting frame 200 is vertically provided with a lifting rack 203, the second driving device 600 is disposed on the carriage 300, an output end of the second driving device 600 is provided with a lifting gear 601 engaged with the lifting rack 203, and the lifting motion of the carriage 300 is realized through the engagement transmission of the lifting gear 601 and the lifting rack 203, the lifting motion of the carriage 300 simultaneously drives the rotating base 400 and the bed assembly 100 to lift together, and meanwhile, the lifting stroke of the bed assembly 100 is increased by using the structures of the first guide rail 201, the second guide rail 202 and the lifting rack 203, so as to improve the moving range of the bed assembly 100 and ensure the lifting stability.

In some embodiments of the present invention, referring to fig. 2 and 7, the second driving device 600 includes: a second drive motor 610; the second speed reducer 620, the second speed reducer 620 is provided with second gear axle 621, the lifting gear 601 sets up the one end at second gear axle 621, lifting gear 601 and second gear axle 621 integrated into one piece set up, second driving motor 610 and second speed reducer 620 are all fixed in the rear side of balladeur train 300, the output of second speed reducer 620 and the output of second driving motor 610 pass through synchronizing wheel and hold-in range connection, thereby realize output's control, guarantee the motion accuracy of balladeur train 300 lift in-process. Further, a second potentiometer 630 is further included, the second potentiometer 630 is connected to the other end of the second gear shaft 621, in detail, the other end of the second gear shaft 621 is connected to the second potentiometer 630 through gear engagement, the number of rotation turns of the second gear shaft 621 is transmitted to the second potentiometer 630 through gear engagement, so that the number of rotation turns of the lifting gear 601 is recorded, and the vertical moving height of the carriage 300 is indirectly recorded.

It should be noted that the second driving device is used for driving the carriage to vertically move along the first guide rail and the second guide rail, the second driving device in the present invention is not limited to the second driving motor and the second speed reducer in the above embodiments, and the second driving device may also be a jacking cylinder, and the jacking cylinder is disposed at the bottom of the carriage and connected to the carriage to control the lifting of the carriage.

In some embodiments of the present invention, referring to fig. 7, a key groove is formed in the second gear shaft 621 along the length direction, a flat key 622 is disposed in the key groove, and the second gear shaft 621 can reduce the tangential force applied to the second gear shaft 621 when rotating through the assembly of the flat key 622, so as to ensure the strength and the rotation precision of the second gear shaft 621; preferably, one end of the second gear shaft 621 is sleeved with a deep groove ball bearing 623, the deep groove ball bearing 623 abuts against the inner wall of the speed reducer, and the deep groove ball bearing 623 can ensure the stable rotation of the second gear shaft 621, so that the transmission efficiency is improved.

In some embodiments of the present invention, referring to fig. 1, fig. 3, and fig. 4, each of the sliding blocks 301 and the pulley block 302 includes two sets respectively disposed at upper and lower sides of the sliding frame 300, wherein the two sets of sliding blocks 301 are vertically disposed at intervals, and the two sets of sliding blocks 301 disposed at intervals can ensure stable cooperation between the sliding frame 300 and the first guide rail 201, so as to improve accuracy during a lifting process; the two sets of pulley blocks 302 can ensure the stable connection between the left side of the carriage 300 and the second guide rail 202, thereby avoiding the position deviation of the carriage 300 during the movement process and improving the flexibility of the carriage 300 during the movement process.

In some embodiments of the present invention, referring to fig. 8 and 9, the bed assembly 100 includes a mounting beam 110, and further includes components such as an X-ray tube, a cassette assembly, a bed surface and the like disposed on the mounting beam 110, a bridging portion 402 is disposed at the front side of the rotary seat 400 in an extending manner, and the mounting beam 110 is fixed to the bridging portion 402 by a bolt.

In the description herein, references to the description of "some embodiments" mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.