CN212632504U - Sample mixing device - Google Patents

Abstract

The utility model relates to the technical field of medical instrument, a sample mixing device is provided, including device mounting bracket, two-dimensional plane motion and rotatory rocking mechanism, two-dimensional plane motion sets up on the device mounting bracket and is used for the rotatory rocking mechanism of drive to move in the two-dimensional plane, and rotatory rocking mechanism is used for driving the sample test tube and rotates and wave, and two motors that two-dimensional plane motion adopted fixed position provide power for same hold-in range jointly and control rotatory rocking mechanism and move in the two-dimensional plane. The utility model discloses a sample mixing device avoids the motor to move along with horizontal motion or vertical lift motion's moving part, alleviates moving part's load, avoids the wire rod of motor and opto-coupler the ageing cracked problem of wire rod in the process of following moving part motion simultaneously.

Description

Sample mixing device

Technical Field

The utility model relates to the technical field of medical equipment, more precisely relate to a sample mixing device.

Background

In the analysis process of clinical examination and in vitro diagnosis, in order to ensure the accuracy of the examination result, the sample is uniformly mixed before the sample is sucked. The mixing device that carries out the mixing operation generally all takes to carry out horizontal motion and vertical lift motion earlier to the test tube that is equipped with the sample and be used for getting to put the sample test tube and send it to the mixing position, then carries out rotatory the shaking so that sample liquid mixing in the vibration backward flow that relapses to the sample test tube.

Although the existing blending device applied to various analyzers can meet the movement requirements, two motors for respectively controlling horizontal movement and vertical lifting movement and respective optical couplers need to be dragged to synchronously move during movement, so that the load of moving parts is increased, and the sample test tube has the risk of falling off when sudden power failure occurs; in addition, in the process that wires of the motor and the optical coupler move along with the moving part, the wires are aged and broken due to repeated bending, so that the service life is shortened; moreover, the rotatory part that rocks of traditional mixing device all adopts single-row bearing to support, and the degree of freedom restriction is not enough, and the sample test tube can produce great swing when rotatory rocking, and the test tube afterbody exists and produces the hidden danger of scraping even collision with other parts.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a sample mixing device, avoid the motor to move along with the moving part of horizontal motion or vertical lift motion together, alleviate the load of moving part, avoid the wire rod of motor and opto-coupler simultaneously at the problem of the ageing cracked wire rod in the process of following the moving part motion.

The technical solution of the utility model is, a sample mixing device is provided, including device mounting bracket, two-dimensional plane motion mechanism and rotatory rocking mechanism, two-dimensional plane motion mechanism sets up on the device mounting bracket and is used for the rotatory rocking mechanism of drive to move in the two-dimensional plane, and rotatory rocking mechanism is used for driving the sample test tube and rotates and wave, and two motors that two-dimensional plane motion mechanism adopted fixed position provide power for same hold-in range jointly and control rotatory rocking mechanism and move in the two-dimensional plane.

Compared with the prior art, the utility model discloses a sample mixing device has following advantage: two motors at fixed positions are adopted to provide power for the same synchronous belt to control two-dimensional plane motion, the motors are prevented from moving along with moving parts of horizontal motion or vertical lifting motion, the load of the moving parts is reduced, and meanwhile the problem that wires of the motors and optical couplers are aged and broken in the process of moving along with the moving parts is solved.

Preferably, the two-dimensional plane motion mechanism comprises a transmission part, a vertical lifting part and a horizontal sliding part, wherein the transmission part is arranged on the device mounting frame, and the vertical lifting part is connected with the transmission part and driven by the transmission part to generate vertical lifting motion; the horizontal sliding component is connected with the transmission component and the vertical lifting component, is driven by the transmission component to generate horizontal motion, and is driven by the vertical lifting component to generate vertical lifting motion; the rotary shaking mechanism is connected with the horizontal sliding component and moves in a two-dimensional space along with the horizontal sliding component. By adopting the structure, the rotary rocking mechanism can perform two-dimensional motion in a plane.

Preferably, the transmission part comprises a motor fixing part, a transmission belt, a first motor and a second motor which are installed on the motor fixing part, output rotating shafts of the first motor and the second motor are respectively connected with a first driving wheel and a second driving wheel, a first driven wheel and a second driven wheel are arranged on the device installation frame, the first driving wheel, the second driving wheel, the first driven wheel and the second driven wheel are connected with the inner side of the transmission belt and driven by the first motor and the second motor to realize synchronous transmission. By adopting the structure, two motors with fixed positions are adopted to provide power for the same synchronous belt to control two-dimensional plane motion.

Preferably, the first driven wheel and the second driven wheel are located at the same height, the first driving wheel and the second driving wheel are located at the same height, and the first driven wheel is higher than the first driving wheel. By adopting the structure, a heavy object is prevented from being hung on the rotating shaft of the motor during power failure, and the load of the motor is reduced.

Preferably, the vertical lift part includes the vertical mounting panel, is provided with 4 leading wheels on the vertical mounting panel, and two leading wheels of top all are connected with the outside of first driving wheel and the second driving belt from between the driving wheel, and two leading wheels of below all are connected with the outside of the first driving wheel and the second driving belt between the driving wheel, and the driving belt drives vertical mounting panel up-and-down motion after being tensioned by 4 leading wheels. By adopting the structure, the vertical mounting plate can be driven to move up and down by the driving belt conveniently.

Preferably, the vertical mounting plate is provided with a horizontal guide rail, the horizontal sliding component comprises a horizontal sliding block and a horizontal mounting plate, the horizontal sliding block is connected to the horizontal guide rail and slides left and right along the horizontal guide rail, and the horizontal mounting plate is simultaneously fixed on the horizontal sliding block and a transmission belt between two guide wheels below the horizontal sliding block. By adopting the structure, under the driving of the driving belt, the horizontal mounting plate drives the horizontal sliding block to slide left and right along the horizontal guide rail, and meanwhile, the horizontal mounting plate also moves up and down along with the vertical mounting plate.

Preferably, rotatory rocking mechanism includes the rotation mounting panel, and the rotation mounting panel is fixed on the horizontal installation board and moves in two-dimensional space along with the horizontal installation board, is provided with third motor, synchronous belt drive part, driven shaft on the rotation mounting panel, and the third motor passes through synchronous belt drive part drive driven shaft and rotates, and the one end of driven shaft is connected with the chuck of rocking that is used for pressing from both sides to get the test tube. By adopting the structure, the rotary shaking mechanism can move in a two-dimensional plane and drive the sample test tube to rotate and shake.

Preferably, the rotary mounting plate is provided with a bearing sleeve, a double-row bearing is arranged in the bearing sleeve, and the driven shaft is connected with the double-row bearing. With this structure, excessive radial swing of the driven shaft that rotationally swings can be restricted.

Preferably, the shaking chuck adopts a torsion spring clamping plate mode or a spring steel clamping plate mode. By adopting the structure, the assembly is easy, the working hours are saved, and the cost is lower.

Preferably, the inner wall of the clamping plate of the shaking clamping head is provided with an anti-slip material. Adopt this structure, prevent that the afterbody from appearing swinging or dropping when the rotation is waved in the test tube.

Drawings

Fig. 1 is the utility model discloses a sample mixing device overall structure schematic diagram.

Fig. 2 is a schematic view of a partial structure of a two-dimensional plane motion mechanism in the sample blending device of the present invention.

Fig. 3 is a schematic view of a partial structure of a transmission part in the sample blending device of the present invention.

Fig. 4 is a schematic structural view of the motor fixing member in the sample blending device of the present invention.

Fig. 5 is a schematic structural diagram of the vertical sliding block in the sample blending device of the present invention.

Fig. 6 is the structure diagram of the horizontal slider in the sample mixing device of the present invention.

Fig. 7 is a cross-sectional view of the rotation rocking mechanism in the sample mixing device of the present invention.

Fig. 8 is a schematic structural view of a first embodiment of a shaking chuck of the sample mixing device according to the present invention.

Fig. 9 is a schematic structural view of a second embodiment of the shaking chuck of the sample mixing device according to the present invention.

Fig. 10 is a schematic structural view of a third embodiment of a shaking chuck of the sample mixing device according to the present invention.

As shown in the figure: 1. the device comprises a device mounting frame, 2, a transmission part, 2-1, a motor fixing part, 2-2, a first motor, 2-3, a second motor, 2-4, a transmission belt, 2-5, a first driving wheel, 2-6, a second driving wheel, 2-7, a first driven wheel, 2-8, a second driven wheel, 3, a vertical lifting part, 3-1, a vertical sliding block, 3-2, a vertical guide rail, 3-3, a first guide wheel, 3-4, a second guide wheel, 3-5, a third guide wheel, 3-6, a fourth guide wheel, 3-7, a first vertical optical coupler, 3-8, a second vertical optical coupler, 3-9, a vertical mounting plate, 3-10, a lifting chopping block, 4, a horizontal sliding part, 4-1, a horizontal sliding block, 4-2, a horizontal sliding block, 3-1, a light sheet, a vertical mounting plate, 3-7, a lifting chopping, 4-3 parts of horizontal guide rail, 4-4 parts of first horizontal optical coupler, 4-5 parts of second horizontal optical coupler, 4-6 parts of horizontal mounting plate, 4-7 parts of upper light chopping plate, 5 parts of lower light chopping plate, 5-1 parts of rotary shaking mechanism, 5-2 parts of rotary mounting plate, 5-3 parts of third motor, 5-4 parts of synchronous belt transmission part, 5-4 parts of shaking chuck, 5-5 parts of rotary optical coupler, 5-6 parts of rotary light chopping plate, 5-7 parts of driven shaft, 5-8 parts of bearing sleeve, 5-9 parts of bearing, 6 parts of test tube.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Further, when a statement such as "… at least one" appears after the list of listed features, the entire listed feature is modified rather than modifying individual elements in the list.

As shown in fig. 1, the sample blending device of the present invention includes a device mounting frame 1, a transmission member 2, a vertical lifting member 3, a horizontal sliding member 4, and a rotary shaking mechanism 5, wherein the transmission member 2 is mounted on the device mounting frame 1, and the vertical lifting member 3 is connected to the transmission member 2 and driven by the transmission member 2 to generate a vertical lifting motion; the horizontal sliding component 4 is connected with the transmission component 2 and the vertical lifting component 3, and is driven by the transmission component 2 to generate horizontal movement, and is driven by the vertical lifting component 3 to generate vertical lifting movement; the rotary shaking mechanism 5 is connected with the horizontal sliding part 4 and moves in a two-dimensional space along with the horizontal sliding part 4, and simultaneously the rotary shaking mechanism 5 drives the test tube 6 to rotate and shake so as to uniformly mix samples in the test tube.

The transmission part 2 comprises a motor fixing part 2-1, a first motor 2-2, a second motor 2-3, a transmission belt 2-4, a first driving wheel 2-5, a second driving wheel 2-6, a first driven wheel 2-7 and a second driven wheel 2-8; as shown in fig. 4, a first motor 2-2 and a second motor 2-3 are mounted on a motor fixing member 2-1, and a first driving wheel 2-5 and a second driving wheel 2-6 are respectively connected with output rotating shafts of the first motor 2-2 and the second motor 2-3; as shown in fig. 2, the device mounting frame 1 is provided with 2 connecting columns, and the first driven wheels 2-7 and the second driven wheels 2-8 are connected to the connecting columns on the device mounting frame 1; the first driven wheel 2-7, the first driving wheel 2-5, the second driven wheel 2-8 and the second driving wheel 2-6 are all connected with the transmission belt 2-4 in an inscribed mode and synchronously transmit. As shown in fig. 3, the vertical lifting component 3 includes a vertical mounting plate 3-9, the left and right sides of the vertical mounting plate 3-9 are respectively provided with 2 connecting columns, and the 4 connecting columns are sequentially provided with a first guide wheel 3-3, a second guide wheel 3-4, a third guide wheel 3-5 and a fourth guide wheel 3-6. The first guide wheel 3-3 and the second guide wheel 3-4 are externally connected with the transmission belt 2-4 between the first driven wheel 2-7 and the second driven wheel 2-8, so that the vertical lifting component 3 can move upwards along with the transmission belt 2-4; the third guide wheel 3-5 and the fourth guide wheel 3-6 are externally connected with the transmission belt 2-4 between the first driving wheel 2-5 and the second driving wheel 2-6, so that the vertical lifting component 3 can move downwards along with the transmission belt 2-4.

The up-and-down movement principle of the vertical lifting member 3 is as follows: when the rotating speeds of the first motor 2-2 and the second motor 2-3 are the same, the moving direction of the vertical lifting component 3 is determined according to the rotating directions of the first motor 2-2 and the second motor 2-3, and if the first motor 2-2 rotates anticlockwise and the second motor 2-3 rotates clockwise, the vertical lifting component 3 moves vertically upwards; if the first motor 2-2 rotates clockwise and the second motor 2-3 rotates counterclockwise, the vertical lifting component 3 moves vertically downwards. When the first motor 2-2 and the second motor 2-3 have different rotation speeds, the moving direction of the vertically lifting member 3 is determined by the rotation differential speed and the rotation direction of the two motors.

As shown in figures 2 and 3, a vertical guide rail 3-2 is arranged on the device mounting frame 1, the vertical lifting component 3 comprises a vertical sliding block 3-1, the vertical sliding block 3-1 is connected on the vertical guide rail 3-2 and can slide up and down along the vertical guide rail 3-2, and a vertical mounting plate 3-9 is fixed on the vertical sliding block 3-1. Under the drive of the transmission belt 2-4, the vertical mounting plate 3-9 drives the vertical slide block 3-1 to slide up and down along the vertical guide rail 3-2. As shown in FIGS. 2 and 5, the left side of the vertical mounting plate 3-9 is further provided with a lifting chopper 3-10, and the device mounting frame 1 is provided with a first vertical optical coupler 3-7 and a second vertical optical coupler 3-8 in sequence from top to bottom corresponding to the movement path of the lifting chopper 3-10. The first vertical optical couplers 3-7 are used for detecting whether the vertical mounting plates 3-9 rise to a high position, and the second vertical optical couplers 3-8 are used for detecting whether the vertical mounting plates 3-9 fall to a low position.

As shown in fig. 1 and 5, a horizontal guide rail 4-2 is provided on the vertical mounting plate 3-9, the horizontal sliding member 4 includes a horizontal slider 4-1 and a horizontal mounting plate 4-5, the horizontal slider 4-1 is connected to the horizontal guide rail 4-2 and can slide left and right along the horizontal guide rail 4-2, the back of the horizontal mounting plate 4-5 is fixed on the horizontal slider 4-1, and the lower end of the horizontal mounting plate 4-5 is fixed on the transmission belt 2-4 between the third guide wheel 3-5 and the fourth guide wheel 3-6. Under the drive of the transmission belt 2-4, the horizontal mounting plate 4-5 drives the horizontal sliding block 4-1 to slide left and right along the horizontal guide rail 4-2, and meanwhile, the horizontal mounting plate 4-5 also moves up and down along with the vertical mounting plate 3-9. As shown in FIGS. 1 and 6, the upper and lower ends of the horizontal mounting plate 4-5 are respectively provided with an upper chopper 4-6 and a lower chopper 4-7, the device mounting frame 1 is provided with a first horizontal optical coupler 4-3, and the first horizontal optical coupler 4-3 is used for detecting whether the horizontal mounting plate 4-5 moves to the leftmost end of the upper position; as shown in fig. 1 and 4, a second horizontal optical coupler 4-4 is disposed on the motor mount 2-1, the second horizontal optical coupler 4-4 is used for detecting whether the horizontal mounting plate 4-5 moves to a low position and is located at a position where the sample tube is clamped, and the second horizontal optical coupler 4-4 is also called a zero optical coupler for clamping the sample.

The principle of the left-right movement of the horizontal sliding member 4 is as follows: when the rotating speeds of the first motor 2-2 and the second motor 2-3 are the same, the moving direction of the horizontal sliding component 4 is determined according to the rotating directions of the first motor 2-2 and the second motor 2-3, if the first motor 2-2 rotates anticlockwise and the second motor 2-3 rotates anticlockwise, the horizontal sliding component 4 moves horizontally to the right; if the first motor 2-2 rotates clockwise and the second motor 2-3 rotates clockwise, the horizontal sliding component 4 moves horizontally to the left. When the rotation speeds of the first motor 2-2 and the second motor 2-3 are different, the moving direction of the horizontal sliding member 4 is determined by the rotation differential speed and the rotation direction of the two motors.

As shown in fig. 1 and 6, the rotary shaking mechanism 5 comprises a rotary mounting plate 5-1, the rotary mounting plate 5-1 is fixed on a horizontal mounting plate 4-5 and moves in a two-dimensional space together with the horizontal mounting plate 4-5, a third motor 5-2, a synchronous belt transmission part 5-3 and a driven shaft 5-7 are arranged on the rotary mounting plate 5-1, the third motor 5-2 drives the driven shaft to rotate through the synchronous belt transmission part 5-3, one end of the driven shaft is connected with a shaking chuck 5-4, the shaking chuck 5-4 is used for clamping a test tube 6, one side of the shaking chuck 5-4 moves in the two-dimensional space along with the rotary mounting plate 5-1, meanwhile, the shaking chuck 5-4 is driven by the driven shaft to rotate, so that the sample in the test tube 6 is uniformly mixed in the shaking process. The other end of the driven shaft is connected with a rotary chopping piece 5-6, a rotary optical coupler 5-5 is arranged on the rotary mounting plate 5-1, and the rotary optical coupler 5-5 is used for detecting whether the shaking chuck 5-4 is located at an initial reset angle for clamping the test tube. As shown in figure 7, the driven shaft 5-7 is connected with a bearing 5-9, the bearing 5-9 is positioned in a bearing sleeve 5-8, the bearing sleeve 5-8 is fixed on the rotary mounting plate 5-1, and the bearing 5-9 adopts a double-row bearing to limit the swing of the driven shaft which rotates and shakes.

The shaking chuck 5-4 can adopt a torsion spring clamping plate mode, as shown in fig. 8 and 9, and clamps and fixes the test tube by means of the elastic potential energy stored by the torsion spring in combination with the lever principle; the rocking jaw 5-4 may also be of the spring steel clamping type, which, as shown in fig. 10, is simple in structure, has a small number of parts, is easier to assemble, saves man-hours, and is relatively low in cost, but the clamping plate is made of a special material and requires special handling. No matter which kind of chuck, the manufacturability of bending of its splint require comparatively rigorously, the angle of bending has certain precision requirement, have higher matching nature with sample test tube outer wall, the angle of splint and the too big and undersize effect that all can influence the centre gripping of length, moreover, the splint inner wall all should be provided with such as the material of rubber characteristic, the increase is to the frictional force of test tube wall, prevent that the test tube from taking place relative motion with splint when the rotation from shaking and causing the test tube afterbody to appear the swing or take place the test tube incident such as drop.

The utility model discloses a sample mixing device's theory of operation as follows:

1. after power-on reset, after power-on, the vertical lifting component 3, the horizontal sliding component 4 and the rotary shaking mechanism 5 all move upwards until reaching the height of uniform mixing, the first vertical optical coupler 3-7 collects the information of the lifting chopping piece 3-10, the horizontal direction is reset, the first horizontal optical coupler 4-3 collects the information of the upper chopping piece 4-6, the angle of the shaking chuck is reset, and the rotary optical coupler 5-5 collects the information of the rotary chopping piece 5-6;

2. before clamping a test tube, the vertical lifting part 3, the horizontal sliding part 4 and the rotary shaking mechanism 5 all move downwards to reach the clamping height of a sample, the second vertical optical coupler 3-8 acquires information of the lifting chopping sheet 3-10, the reset before clamping the sample is carried out in the horizontal direction, and the second horizontal optical coupler 4-4 acquires information of the lower chopping sheet 4-7;

3. clamping the test tube, and shaking the chuck 5-4 to move forwards along with the horizontal sliding part 4 horizontally to clamp the test tube;

4. shaking and mixing, wherein the shaking chuck 5-4 clamps the test tube and moves to a mixing height to perform rotary shaking, the rotation angle is an obtuse angle, a certain time delay exists during rotation so as to facilitate the backflow of the sample at the bottom of the test tube and achieve the purpose of full mixing, and after the rotary action is repeated for a plurality of times, the shaking angle returns to the initial reset position;

5. and (3) putting the test tube back to the original position and withdrawing, shaking and uniformly mixing, putting the test tube back to the original position through actions in the horizontal and vertical directions, moving the horizontal sliding part 4 back, withdrawing from the sample holding position, and finishing the whole uniformly mixing action.

Vertical lift part 3 and horizontal slip part 4 are when the motion, and the hold-in range can drag a plurality of leading wheels to rotate, and overall structure self has certain damping, can guarantee that vertical lift part 3 can not descend because of self gravity is too big when the outage, arouses other accidents. And after the machine is started, the utility model discloses a but sample mixing device automatic re-setting.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention. It should be understood that the application of the present patent is not limited to the above-mentioned specific examples, and it will be obvious to those skilled in the art that the same functions can be achieved by modifying and changing the principle of the two-dimensional plane motion, and the two-dimensional plane motion achieved by the principle is not limited to the application of the blending component, and all the related modifications and changes fall within the protection scope of the appended claims. Likewise, the use of double-row bearings to limit the oscillation of the mixing output shaft is also the main scope of protection of this patent.

Claims (10)

1. The utility model provides a sample mixing device, including device mounting bracket (1), two-dimensional plane motion mechanism and rotatory rocking mechanism (5), two-dimensional plane motion mechanism sets up on device mounting bracket (1) and is used for driving rotatory rocking mechanism (5) and moves in the two-dimensional plane, rotatory rocking mechanism (5) are used for driving the sample test tube and rotate and rock, a serial communication port, two motors that two-dimensional plane motion mechanism adopted fixed position provide power for same hold-in range jointly and control rotatory rocking mechanism (5) and move in the two-dimensional plane.

2. The sample blending device according to claim 1, wherein the two-dimensional plane motion mechanism comprises a transmission part (2), a vertical lifting part (3) and a horizontal sliding part (4), the transmission part (2) is mounted on the device mounting frame (1), and the vertical lifting part (3) is connected with the transmission part (2) and driven by the transmission part (2) to generate vertical lifting motion; the horizontal sliding part (4) is connected with the transmission part (2) and the vertical lifting part (3), and is driven by the transmission part (2) to generate horizontal motion, and is driven by the vertical lifting part (3) to generate vertical lifting motion; the rotary shaking mechanism (5) is connected with the horizontal sliding component (4) and moves in a two-dimensional space together with the horizontal sliding component (4).

3. The sample mixing device according to claim 2, wherein the transmission member (2) comprises a motor fixing member (2-1), a transmission belt (2-4), and a first motor (2-2) and a second motor (2-3) which are mounted on the motor fixing member (2-1), output rotating shafts of the first motor (2-2) and the second motor (2-3) are respectively connected with a first driving wheel (2-5) and a second driving wheel (2-6), the device mounting frame (1) is provided with a first driven wheel (2-7) and a second driven wheel (2-8), the first driving wheel (2-5), the second driving wheel (2-6), the first driven wheel (2-7) and the second driven wheel (2-8) are connected with the inner side of the transmission belt (2-4) and are connected with the first motor (2-2) and the second motor (2-3) ) The drive of (2) and the synchronous transmission.

4. The sample mixing device according to claim 3, wherein the first driven wheel (2-7) and the second driven wheel (2-8) are located at the same height, the first driving wheel (2-5) and the second driving wheel (2-6) are located at the same height, and the first driven wheel (2-7) is higher than the first driving wheel (2-5).

5. The sample blending device according to claim 4, wherein the vertical lifting component (3) comprises a vertical mounting plate (3-9), the vertical mounting plate (3-9) is provided with 4 guide wheels, the upper two guide wheels are connected with the outer sides of the transmission belts (2-4) between the first driven wheels (2-7) and the second driven wheels (2-8), the lower two guide wheels are connected with the outer sides of the transmission belts (2-4) between the first driving wheels (2-5) and the second driving wheels (2-6), and the transmission belts (2-4) are tensioned by the 4 guide wheels to drive the vertical mounting plate (3-9) to move up and down.

6. The sample mixing device according to claim 5, wherein the vertical mounting plate (3-9) is provided with a horizontal guide rail (4-2), the horizontal sliding component (4) comprises a horizontal sliding block (4-1) and a horizontal mounting plate (4-5), the horizontal sliding block (4-1) is connected to the horizontal guide rail (4-2) and slides left and right along the horizontal guide rail (4-2), and the horizontal mounting plate (4-5) is simultaneously fixed on the horizontal sliding block (4-1) and the transmission belt (2-4) between the two guide wheels below.

7. The sample mixing device according to claim 6, wherein the rotary shaking mechanism (5) comprises a rotary mounting plate (5-1), the rotary mounting plate (5-1) is fixed on the horizontal mounting plate (4-5) and moves in a two-dimensional space along with the horizontal mounting plate (4-5), a third motor (5-2), a synchronous belt transmission part (5-3) and a driven shaft (5-7) are arranged on the rotary mounting plate (5-1), the third motor (5-2) drives the driven shaft (5-7) to rotate through the synchronous belt transmission part (5-3), and one end of the driven shaft (5-7) is connected with a shaking chuck (5-4) for clamping a test tube.

8. The sample mixing device according to claim 7, wherein the rotary mounting plate (5-1) is provided with a bearing sleeve (5-8), a bearing (5-9) is arranged in the bearing sleeve (5-8), the driven shaft (5-7) is connected with the bearing (5-9), and the bearing (5-9) is a double-row bearing.

9. The sample mixing apparatus according to claim 7, wherein the shaking clamp (5-4) is a torsion spring clamp or a spring steel clamp.

10. The sample mixing device according to claim 7, wherein the inner wall of the clamp plate of the shaking clamp (5-4) is provided with an anti-slip material.

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