Coaxial oscillation device

Abstract

The invention relates to a coaxial oscillation device, and discloses an oscillation device which drives a rotating assembly to move through a transmission assembly, further drives a test tube to move and can be suitable for small-batch experiments needing accurate oscillation. The device is characterized by comprising a fixed assembly, a transmission assembly and a rotating assembly, the transmission assembly is arranged on the fixing assembly and connected with the rotating assembly, and the rotating assembly drives a test tube to rotate in a reciprocating mode; the fixing assembly is composed of a supporting column, a bearing piece, a supporting and fixing plate and a motor shell, the supporting column and the bearing piece are both arranged on the supporting and fixing plate, and the motor shell is fixedly connected with the supporting column; the transmission assembly is composed of a first L-shaped connecting piece, a first connecting rod, a second L-shaped connecting piece, a sleeving shaft, a third L-shaped connecting piece and a second connecting rod, one end of the third L-shaped connecting piece is connected with the motor arranged in the motor shell, and the other end of the third L-shaped connecting piece is rotationally connected with one end of the second connecting rod.

Description

Technical Field

[0001] This invention relates to a coaxial oscillation device that enables synchronous movement of multiple oscillation units through coaxial drive. It belongs to the field of experimental instrument technology, and particularly relates to an oscillation device that drives a rotating component to move through a transmission component, which in turn drives the test tube to move. This device is suitable for small-batch experiments that require precise oscillation. Background Technology

[0002] In biochemical experiments, shaking is a common technique, primarily used to promote liquid mixing, accelerate chemical reactions, suspend cells or particulate matter, and maintain sample homogeneity. For example, in chemical analysis and biochemical reactions, shaking increases the collision frequency between substances, thereby accelerating the reaction rate. In cell culture, some cells or particles tend to settle; shaking can keep them suspended, ensuring experimental accuracy. Furthermore, for experiments requiring long-term incubation or reactions, shaking helps prevent component separation or precipitation. Currently, commercially available shaking devices are mainly divided into two types: one uses a unidirectional circular motion shaker, and the other uses a linear reciprocating motion shaker. Unidirectional circular motion shakers use a motor-driven rotating disk to move the test tube in a circular motion for mixing. However, because the rotation direction is fixed, it cannot create an effective alternating centrifugal force, resulting in limited mixing effects for high-viscosity or easily precipitated samples, and it is particularly difficult to avoid particle aggregation or cell precipitation. Linear reciprocating oscillators promote liquid mixing by vibrating back and forth in the horizontal or vertical direction. They can provide a large amplitude and frequency adjustment range. However, in actual operation, due to the lack of the effect of alternating centrifugal force and gravity, they cannot form efficient three-dimensional vortex mixing. The oscillation mixing effect is poor, and when processing high viscosity or easily precipitated samples, problems such as uneven mixing and particle aggregation are likely to occur.

[0003] Publication No. CN222795586U discloses a blood sample mixer, including a detection box. The detection box has guide rails on its two inner walls, with sliding locking blocks inserted within the guide rails. Square grooves are formed on both walls of the detection box, with a limiting groove at the center of each square groove. A lifting block is located inside the detection box, and a rotating mechanism is fixed inside the lifting block. A placement block is located at the top of the rotating mechanism, and the placement block is connected to a shaking mechanism. This mixer promotes blood mixing by using gears to control the reciprocating movement of a rack and pinion plate to create small-amplitude shaking. However, this single movement method results in poor oscillation mixing and cannot meet the mixing requirements of samples with different viscosities.

[0004] To address the aforementioned issues, the applicant filed a separate Chinese invention patent application entitled "An Oscillating Mixer," which enables a driving component to drive a oscillating component to oscillate, which in turn drives a rotating component to rotate, thus achieving forward and reverse rotation of the test tubes. However, the aforementioned oscillating mixer employs a dual-head drive design and gear meshing transmission, making it primarily suitable for large-scale processing and experiments requiring simultaneous oscillation of numerous test tubes. It is not well-suited for small-batch experiments requiring precise oscillation. Summary of the Invention

[0005] To improve the above situation, the present invention provides a coaxial oscillation device that drives a rotating component to move through a transmission component, which in turn drives the test tube to move, and is suitable for small-batch experiments that require precise oscillation.

[0006] The coaxial oscillation device of the present invention is implemented as follows: The coaxial oscillation device of the present invention includes a fixed component, a transmission component, and a rotating component; The characteristic feature is that the transmission component is placed on the fixed component, the transmission component is connected to the rotating component, and the rotating component drives the test tube to perform reciprocating rotational motion; The fixing assembly consists of a support column, a receiving component, a support fixing plate, and a motor housing. The support column and the receiving component are both placed on the support fixing plate, and the motor housing is fixedly connected to the support column. The transmission assembly consists of a first L-shaped connector, a first connecting rod, a second L-shaped connector, a sleeve shaft, a third L-shaped connector, and a second connecting rod. One end of the third L-shaped connector is connected to the motor housed inside the motor housing, and the other end of the third L-shaped connector is rotatably connected to one end of the second connecting rod. One end of the first L-shaped connector is rotatably connected to the other end of the second connecting rod and one end of the first connecting rod in sequence. The other end of the first L-shaped connector is rotatably connected to the support column, and the other end of the first connecting rod is connected to one end of the second L-shaped connector. The other end of the second L-shaped connector passes through the receiving member and is connected to the sleeve shaft. The other end of the second L-shaped connector is rotatably connected to the receiving component via a bearing. Preferably, a lubricating coating is applied to the rotating connection between the first link and the second link; The rotating assembly consists of a 30-degree angled oscillating plate and slots, and a sleeve shaft connects multiple 30-degree angled oscillating plates, which are provided with slots. Preferably, when the 30-degree angled oscillating plate is connected to the sleeve shaft, the tilt directions of two adjacent oscillating plates are opposite; Preferably, the end of the 30-degree angled oscillating plate that is not connected to the sleeve shaft is arc-shaped; The present invention also relates to an oscillating mixer, the oscillating mixer comprising a support assembly, a drive assembly, an oscillating assembly, and a rotating assembly; The characteristic feature is that the driving component is placed on the support component, the driving component drives the swinging component to swing, and the swinging component drives the rotating component to rotate through gear meshing, thereby realizing the test tube oscillation function; The support assembly consists of a base plate, columns, movable grooves, support plates, U-shaped support plates, and connectors. Four columns are placed at the four corners of the base plate, and the support plates are placed on the columns. Two movable grooves are provided at symmetrical positions on the edge of the support plates. Two U-shaped support plates are placed symmetrically on the support plates, and the connectors are placed in the middle of the crossbar of the U-shaped support plates. The drive assembly consists of a dual-head rotary motor, connecting rods, and sliding columns. The dual-head rotary motor is located in the middle of the support plate. One end of each of the two connecting rods is connected to one end of the dual-head rotary motor, and the other end of the connecting rods is provided with a sliding column. The swing assembly consists of a sector swing gear and a U-shaped swing groove. The U-shaped swing groove is connected to the middle of the connecting column, and the sector swing gear is connected to the other end of the connecting column. The rotating assembly consists of a test tube insertion hole, an oscillating plate, a gear shaft, a gear, and a fixing component. The gear is meshed with a sector-shaped oscillating gear. The fixing component is placed on a support plate. The central shaft of the gear is rotatably connected to the fixing component and passes through the fixing component to be fixedly connected to the middle of the oscillating plate. The oscillating plate is provided with a test tube insertion hole. Furthermore, the test tube swing rack is provided with insertion holes of different specifications; Furthermore, the inner wall of the socket is provided with anti-slip strips. Beneficial effects

[0007] First, it enables simultaneous oscillation of multiple test tubes, improving experimental efficiency; Second, the equipment is small in size, which reduces space occupation and is suitable for small-batch small and medium-sized experiments; Third, the coaxial structure can enhance the stability and reliability of the equipment. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of an oscillating mixer according to the present invention; Figure 2 This is a three-dimensional structural diagram of an embodiment 2 of the oscillating mixer of the present invention; Figure 3 This is a three-dimensional structural diagram of an embodiment 3 of the oscillating mixer of the present invention; Figure 4 This is a three-dimensional structural diagram of a coaxial oscillation device according to the present invention; Figure 5 This is a three-dimensional structural diagram of a coaxial oscillation device according to the present invention, wherein only the coaxial oscillation structure is shown. Attached Figure

[0009] The components are: a fan-shaped oscillating gear (1), a test tube insertion hole (2), an oscillating plate (3), a gear shaft (4), a gear (5), a fixing piece (6), a U-shaped oscillating groove (7), a base plate (8), a column (9), a movable groove (10), a double-headed rotary motor (11), a support plate (12), a connecting rod (13), a U-shaped support plate (14), a sliding column (15), a connector (16), test tube insertion holes of different specifications (17), an anti-slip strip (18), a support column (19), a first L-shaped connector (20), a first connecting rod (21), a second L-shaped connector (22), a receiving piece (23), a sleeve shaft (24), a 30-degree angled oscillating plate (25), a hole groove (26), a support fixing plate (27), a third L-shaped connector (28), a motor housing (29), and a second connecting rod (30). Detailed Implementation Example 1

[0010] The present invention provides a coaxial oscillation device comprising a fixed component, a transmission component, and a rotating component; The characteristic feature is that the transmission component is placed on the fixed component, the transmission component is connected to the rotating component, and the rotating component drives the test tube to perform reciprocating rotational motion; The fixing assembly consists of a support column (19), a receiving part (23), a support fixing plate (27), and a motor housing (29). The support column (19) and the receiving part (23) are both placed on the support fixing plate (27), and the motor housing (29) is fixedly connected to the support column (19). The transmission assembly consists of a first L-shaped connector (20), a first connecting rod (21), a second L-shaped connector (22), a sleeve shaft (24), a third L-shaped connector (28), and a second connecting rod (30). One end of the third L-shaped connector (28) is connected to the motor housed in the motor housing (29), and the other end of the third L-shaped connector (28) is rotatably connected to one end of the second connecting rod (30). One end of the first L-shaped connector (20) is rotatably connected to the other end of the second connecting rod (30) and one end of the first connecting rod (21) in sequence. The other end of the first L-shaped connector (20) is rotatably connected to the support column (19), and the other end of the first connecting rod (21) is connected to one end of the second L-shaped connector (22). The other end of the second L-shaped connector (22) passes through the receiving member (23) and is connected to the sleeve shaft (24). Preferably, the other end of the second L-shaped connector (22) is detachably connected to the sleeve shaft (24). The other end of the second L-shaped connector (22) and the receiving part (23) are rotatably connected by a bearing. Preferably, the length of the receiving member (23) is greater than half the length of the second L-shaped connector (22). Preferably, a lubricating coating is applied to the rotatable connection between the first link (21) and the second link (30); The rotating assembly consists of a 30-degree angled oscillating plate (25) and a slot (26). A sleeve shaft (24) connects multiple 30-degree angled oscillating plates (25), and the 30-degree angled oscillating plates (25) are provided with slots (26). Preferably, the plurality of the 30-degree angled oscillating plates (25) are arranged equidistantly along the circumferential direction of the sleeve shaft (24). Preferably, the width of the 30-degree angled oscillating plate (25) gradually decreases from the end not connected to the sleeve shaft (24) to the other end. Preferably, when the 30-degree angled oscillating plate (25) is connected to the sleeve shaft (24), the tilting directions of two adjacent oscillating plates are opposite; Preferably, a rubber anti-slip pad is provided inside the groove (26). Preferably, the end of the 30-degree angled oscillating plate (25) that is not connected to the sleeve shaft (24) is arc-shaped; When in use, place the test tube in the slot (26), start the motor, the motor rotates and drives the third L-shaped connector (28) to rotate, the third L-shaped connector (28) drives the lower end of the second connecting rod (30) to rotate around the connecting shaft between the third L-shaped connector (28) and the second connecting rod (30), and drives the upper end of the second connecting rod (30) to perform arc reciprocating motion, thereby driving the first L-shaped connector (20) to perform reciprocating motion, further driving the first connecting rod (21) to perform reciprocating motion, the first connecting rod (21) drives the second L-shaped connector (22) to swing back and forth, a lubricating coating is applied to the rotating connection between the first connecting rod (21) and the second connecting rod (30), which can effectively reduce friction, the other end of the second L-shaped connector (22) drives the sleeve shaft (24) to rotate, the sleeve shaft (24) drives multiple 30-degree inclined oscillating plates (25) to rotate back and forth, the test tube fixed in the slot (26) performs stable reciprocating rotational motion with the oscillating plates, thereby completing the oscillation experiment; One end of the first L-shaped connector (20) is rotatably connected to the other end of the second connecting rod (30) and one end of the first connecting rod (21) in sequence; the other end of the first L-shaped connector (20) is rotatably connected to the support column (19), and the other end of the first connecting rod (21) is connected to one end of the second L-shaped connector (22). The coaxial design ensures that the motion trajectory of each component remains consistent during the oscillation process, simplifies the transmission system, reduces vibration and noise, and improves the stability and reliability of the equipment operation. The design of coating a lubricating layer at the rotating connection of the first link (21) and the second link (30) can reduce friction, improve overall mechanical efficiency, reduce energy loss, reduce wear, improve durability, and extend service life. When the 30-degree angled oscillating plate (25) is connected to the sleeve shaft (24), the design of the opposite tilting directions of the two adjacent oscillating plates can reduce the shaking of the whole device and improve the stability of the equipment operation. The 30-degree angled oscillating plate (25) is designed with an arc shape at the end that is not connected to the sleeve shaft (24). During rotation, the arc-shaped end can make the surrounding airflow smoother, which can improve the reliability and safety of the equipment operation, and at the same time reduce the risk of test tube breakage caused by sharp edges. It achieves the goal of driving the rotating component to move through the transmission component, which in turn drives the test tube to move, making it suitable for small-batch experiments that require precise oscillation.

[0011] It should be noted that the coaxial oscillation device described above and the oscillation mixer described below are applicable to different scenarios; The oscillating mixer includes a support assembly, a drive assembly, a swing assembly, and a rotation assembly; The characteristic feature is that the driving component is placed on the support component, the driving component drives the swinging component to swing, and the swinging component drives the rotating component to rotate through gear meshing, thereby realizing the test tube oscillation function; The support assembly consists of a base plate (8), columns (9), movable grooves (10), support plates (12), U-shaped support plates (14), and connectors (16). The four columns (9) are placed at the four corners of the base plate (8), the support plates (12) are placed on the columns (9), and two movable grooves (10) are provided at symmetrical positions on the edge of the support plates (12). Two U-shaped support plates (14) are placed symmetrically on the support plates (12), and the connectors (16) are placed in the middle of the crossbar of the U-shaped support plates (14). The drive assembly consists of a double-headed rotary motor (11), a connecting rod (13), and a sliding column (15). The double-headed rotary motor (11) is located in the middle of the support plate (12). One end of each of the two connecting rods (13) is connected to the two ends of the double-headed rotary motor (11), and the other end of the connecting rod (13) is provided with a sliding column (15). The swing assembly consists of a fan-shaped swing gear (1) and a U-shaped swing groove (7). The U-shaped swing groove (7) is connected to the middle of the horizontal column of the connector (16), and the fan-shaped swing gear (1) is connected to the other end of the horizontal column of the connector (16). The rotating assembly consists of a test tube insertion hole (2), an oscillating plate (3), a gear shaft (4), a gear (5), and a fixing member (6). The gear (5) is meshed with the sector swing gear (1). The fixing member (6) is placed on the support plate (12). The central shaft of the gear (5) is rotatably connected to the fixing member (6). The gear passes through the fixing member (6) and is fixedly connected to the middle of the oscillating plate (3). The oscillating plate (3) is provided with a test tube insertion hole (2). Preferably, the fan-shaped oscillating gear (1) is designed with a double-layer structure. The outer layer is made of high wear-resistant alloy steel, and the inner layer is embedded with a shock-absorbing elastomer to absorb vibration energy. The surface of the fan-shaped oscillating gear (1) is specially polished and a self-lubricating coating is added. When in use, place the test tube in the test tube socket (2) and start the double-headed rotary motor (11). The output shafts at both ends of the double-headed rotary motor (11) drive the two connecting rods (13) to rotate respectively. The other end of the connecting rod (13) slides in the U-shaped swing groove (7) through the sliding column (15), thereby driving the U-shaped swing groove (7) to reciprocate. The U-shaped swing groove (7) drives the sector swing gear (1) to swing. The sector swing gear (1) meshes with the gear (5), thereby driving the gear (5) to rotate in both directions. The central shaft of the gear (5) passes through the fixing piece (6) and is fixedly connected to the middle of the oscillating plate (3), thereby converting the motion into the rotational motion of the oscillating plate (3). The oscillating plate (3) drives the test tube in the test tube socket (2) to oscillate, thereby realizing multi-dimensional mixing of the sample in the test tube, reducing stratification or precipitation, and can adapt to the mixing needs of samples with different viscosities (such as blood, culture medium, chemical reagents) by adjusting the motor speed. Example 2

[0012] The difference between this embodiment and embodiment 1 is that the test tube swing rack (6) is provided with test tube insertion holes (17) of different specifications. The test tube insertion holes (17) of different specifications can better fit the size and shape of the test tube, thereby fixing the test tube more firmly and preventing it from loosening or falling off due to vibration during the oscillation process, which helps to ensure the stability and safety of the experimental results. Test tubes of different specifications can be inserted into the same test tube swing rack (6) at the same time, realizing synchronous oscillation of multiple types of samples in a single batch and improving experimental efficiency. Example 3

[0013] The inner wall of the test tube insertion hole (2) is provided with an anti-slip strip (18), which fits tightly against the inner wall of the test tube insertion hole (2). The flexible material of the anti-slip strip (18) can absorb the high-frequency vibration energy during the oscillation process, reduce the direct collision between the test tube and the hard inner wall of the test tube insertion hole (2), thereby reducing the test tube breakage rate. The contact surface between the anti-slip strip (18) and the outer wall of the test tube generates static friction, preventing the test tube from sliding or detaching from the test tube insertion hole (2) due to inertia during the swing, thus ensuring the stability of the oscillation. The compression and rebound characteristics of the anti-slip strip (18) allow it to adapt to the difference in test tube diameter within a certain range, and fill the gap between the test tube insertion hole (2) and the test tube through its own deformation, thus achieving universality. At the same time, the damping characteristics of the rubber can suppress the noise generated by the collision between the test tube and the test tube insertion hole (2), reducing the operating noise of the equipment.

[0014] The dual-head rotary motor (11) is placed in the middle of the support plate (12). The symmetrical design of the two connecting rods (13) connecting the two ends of the dual-head rotary motor (11) can effectively balance the driving force, avoid system imbalance or vibration that may be caused by single-sided driving, and make the force of the whole system more uniform, reducing mechanical stress concentration or fatigue problems that may be caused by single-sided driving, and effectively extending the equipment life. The design of the two U-shaped swing grooves (7) being connected to the middle of the two connecting parts (16) and the two fan-shaped swing gears (1) being connected to the other end of the two connecting parts (16) can realize controllable forward and reverse rotation, prevent the liquid in the test tube from centrifugally separating due to continuous rotation, effectively isolate motor vibration, reduce interference to the experimental table or surrounding equipment, and reduce noise, making it especially suitable for quiet laboratory environments. The fan-shaped oscillating gear (1) is designed with a double-layer structure. The outer layer is made of high wear-resistant alloy steel, and the inner layer is embedded with a shock-absorbing elastomer to absorb vibration energy. The surface of the fan-shaped oscillating gear (1) is polished to reduce the coefficient of friction, which can improve the durability and fatigue resistance of the gear, extend its service life, reduce noise and vibration during operation, and improve the stability and comfort of the equipment.

[0015] The goal is to create a vibrating mixer that can drive the oscillating component to oscillate, which in turn drives the rotating component to rotate, thus achieving forward and reverse rotation of the test tube. This induces three-dimensional movement of the liquid inside the test tube, enabling multi-dimensional mixing, reducing liquid stratification or precipitation, and adapting to the mixing requirements of samples with different viscosities (such as blood, culture medium, and chemical reagents).

[0016] It should be noted that, unless otherwise explicitly specified and limited, the terms "placed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections such as folded edges, rivets, pins, adhesives, and welds; detachable connections such as threaded connections, snap-fit ​​connections, and hinges; integral connections; electrical connections; direct connections; or indirect connections via an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0017] It should be further noted that, in order to keep the description simple and clear, the above specific embodiments only describe the differences between them and other embodiments. However, those skilled in the art should know that the above specific embodiments are also independent technical solutions.

Claims

1. A coaxial oscillation device, comprising a fixed assembly, a transmission assembly, and a rotating assembly, characterized in that: The transmission assembly is placed on the fixed assembly and connected to the rotating assembly. The rotating assembly drives the test tube to reciprocate in rotation. The fixed assembly consists of a support column, a receiving component, a support fixing plate, and a motor housing. The support column and the receiving component are both placed on the support fixing plate, and the motor housing is fixedly connected to the support column. The transmission assembly consists of a first L-shaped connector, a first connecting rod, a second L-shaped connector, a sleeve shaft, a third L-shaped connector, and a second connecting rod. One end of the third L-shaped connector is connected to the motor located inside the motor housing, and the other end of the third L-shaped connector is rotatably connected to one end of the second connecting rod. One end of an L-shaped connector is rotatably connected to the other end of a second connecting rod and one end of a first connecting rod in sequence; the other end of the first L-shaped connector is rotatably connected to a support column, the other end of the first connecting rod is connected to one end of a second L-shaped connector, and the other end of the second L-shaped connector passes through a receiving member and is connected to a sleeve shaft; the other end of the second L-shaped connector and the receiving member are rotatably connected via a bearing; the rotating assembly consists of a 30-degree angled oscillating plate and slots; the sleeve shaft connects multiple 30-degree angled oscillating plates, and slots are provided on the 30-degree angled oscillating plates; the coaxial oscillation device and an oscillating mixer are applicable to different scenarios.

2. The coaxial oscillation device according to claim 1, characterized in that... When the 30-degree angled oscillating plate is connected to the sleeve shaft, the tilt directions of two adjacent oscillating plates are opposite.

3. The coaxial oscillation device according to claim 1, characterized in that... The end of the 30-degree angled oscillating plate that is not connected to the sleeve shaft is rounded.

4. A coaxial oscillation device according to claim 1, characterized in that... A lubricating coating is applied to the rotating connection between the first and second links.

5. A coaxial oscillation device according to claim 1, characterized in that... A rubber anti-slip pad is provided inside the groove.

6. A coaxial oscillation device according to claim 1, characterized in that... Multiple 30-degree angled oscillating plates are arranged at equal intervals along the circumferential direction of the sleeve axis.

7. A coaxial oscillation device according to claim 1, characterized in that... The width of the 30-degree angled oscillating plate gradually decreases from the end not connected to the sleeve shaft to the other end.

8. A coaxial oscillation device according to claim 1, characterized in that... The length of the receiving component is greater than half the length of the second L-shaped connector.

9. A coaxial oscillation device according to claim 1, characterized in that... The other end of the second L-shaped connector is detachably connected to the sleeve shaft.

10. A coaxial oscillation device according to claim 1, characterized in that... The aforementioned oscillating mixer includes a support assembly, a drive assembly, an oscillating assembly, and a rotating assembly. The drive assembly is placed on the support assembly and drives the oscillating assembly to oscillate. The oscillating assembly drives the rotating assembly to rotate via gear meshing, thereby achieving the test tube oscillation function. The support assembly consists of a base plate, columns, movable slots, a support plate, a U-shaped support plate, and connectors. Four columns are respectively placed at the four corners of the base plate, and the support plate is placed on the columns. Two movable slots are symmetrically located on the edge of the support plate. Two U-shaped support plates are symmetrically placed on the support plate. The connector is placed in the middle of the crossbar of the U-shaped support plate. The crossbar and vertical plate of the connector are rotatably connected. The drive assembly consists of... The system comprises a double-headed rotary motor, connecting rods, and sliding columns. The double-headed rotary motor is located in the middle of the support plate. One end of each connecting rod is connected to one end of the double-headed rotary motor, and the other end of the connecting rod is equipped with a sliding column. The swing assembly consists of a sector-shaped swing gear and a U-shaped swing groove. The U-shaped swing groove is connected to the middle of the connecting column, and the sector-shaped swing gear is connected to the other end of the connecting column. The rotating assembly consists of a test tube insertion hole, an oscillating plate, a gear shaft, a gear, and a fixing component. The gear is meshed with the sector-shaped swing gear. Two fixing components are symmetrically placed on the support plate. The central shaft of the gear is rotatably connected to the corresponding fixing component and passes through the corresponding fixing component to be fixedly connected to the middle of the oscillating plate. The oscillating plate is provided with a test tube insertion hole.

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