Rotary clamping structure and test tube sample lifting and uniform mixing device with rotary clamping structure

Abstract

The invention discloses a rotary clamping structure and a test tube sample lifting and blending device with the rotary clamping structure. A clamping motor is driven to drive a lead screw to rotate, so that a sliding block slides, an arc ring is driven to rotate through a connecting rod, and a clamping strip rotates towards the center to fix a test tube; the clamping motor rotates reversely, and the clamping strips rotate reversely to loosen the test tubes to complete taking and placing operation. The device is characterized in that the device is composed of a fixed circular ring, a vertical plate, a clamping motor, a lead screw, a sliding block, a second arc ring, a connecting rod, a first arc ring, a square hollow sleeve piece, a cylindrical fixed block, a fixed pin and a clamping strip, a plurality of circular holes are formed in the test tube disc, the circular holes are evenly distributed in the test tube disc, the fixed circular ring is of a circular ring structure, and the vertical plate is arranged on the fixed circular ring. The outer ring surfaces of the fixed circular rings are fixedly connected with the side surfaces of the circular holes, each circular hole corresponds to two fixed circular rings, the two fixed circular rings are arranged up and down, and the top surface of the upper fixed circular ring and the top surface of the test tube disc are on the same plane.

Description

Technical Field

[0001] This invention relates to a rotary clamping structure and a lifting and mixing device for test tube samples, which can stably clamp test tubes of different sizes and is installed on a lifting and mixing device for test tube samples. It belongs to the field of test tube mixing technology, and particularly relates to a rotary clamping structure that drives a clamping motor to rotate a lead screw, causing a sliding block to slide and a connecting rod to rotate an arc ring, causing the clamping bar to rotate towards the center to fix the test tube. The clamping motor reverses the rotation of the clamping bar to release the test tube and complete the pick-and-place operation. Background Technology

[0002] In laboratory sample processing, sample mixing is a crucial step. While various sample mixing devices are available on the market, they suffer from several problems. First, existing devices generally have poor sample adaptability; the limited size of the test tube jacks cannot meet the diverse sample requirements, necessitating frequent device changes when processing different samples. Second, traditional vortexing and rotation mixing methods generate strong centrifugal forces during operation, causing light components to accumulate at the tube edges, severely affecting sample homogeneity. Furthermore, precise control of force and speed during operation is difficult, easily generating numerous air bubbles. For samples sensitive to mechanical shear forces, such as enzymes, proteins, or cells, their activity can be severely impaired. Additionally, some devices have poorly designed support structures, making them prone to shaking and tipping during operation. This not only compromises stable operation and affects sample mixing but can also lead to device damage and sample waste, posing significant risks and losses to the experiment.

[0003] Publication number CN222795586U discloses a blood sample mixer, including a test box. The test box has guide rails on its two inner walls, and a sliding locking block is inserted in the guide rails. Square grooves are formed on both walls of the test box, and a limiting groove is formed in the center of the square grooves. A lifting block is provided inside the test box, and a rotating mechanism is fixed inside the lifting block. A placement block is provided at the top of the rotating mechanism, and the placement block is connected to a shaking mechanism. The above-mentioned mixing device mixes the blood flow by small-amplitude shaking through the meshing of a fixed gear connected to the rear end of the rotating shaft with a bidirectional rack plate that moves back and forth. However, the shaking amplitude is small, and the dispersion and mixing effect is poor.

[0004] To address the aforementioned issues, the applicant filed a separate Chinese invention patent application entitled "A Lifting and Mixing Device for Test Tube Samples." This device utilizes a support component to ensure stable placement and a mixing component to convert rotational motion into vertical movement, enabling the lifting and mixing of samples within the test tube. However, this mixing device, relying solely on the connection method of inserting the test tube into the socket, is insufficient to withstand the vibrations generated during device operation and the forces exerted during sample mixing. The test tube is prone to shaking and may even slip, failing to ensure stability throughout the mixing process and affecting the mixing effect and accuracy of experimental results. Furthermore, while it can accommodate various common test tube outer diameters to some extent, actual scientific research and experiments involve a wide variety of test tube specifications, including not only standard sizes but also special shapes and non-standard sizes. For test tubes with outer diameters falling between standard specifications, it is often impossible to effectively fix them in place. Summary of the Invention

[0005] To improve the above situation, the present invention provides a rotary clamping structure and a lifting and mixing device for test tube samples having the same. The rotary clamping structure provides a method in which a clamping motor drives a lead screw to rotate, causing a sliding block to slide and a connecting rod to drive an arc ring to rotate, causing the clamping bar to rotate towards the center to fix the test tube. The method in which the clamping motor reverses and the clamping bar rotates in the opposite direction to release the test tube and complete the picking and placing operation.

[0006] The present invention discloses a rotary clamping structure and a lifting and mixing device for test tube samples, which is implemented as follows: The rotary clamping structure of the present invention consists of a fixed ring, a vertical plate, a clamping motor, a lead screw, a sliding block, a second arc ring, a connecting rod, a first arc ring, a square hollow kit, a cylindrical fixing block, a fixing pin, and clamping strips. The test tube tray has multiple circular holes, which are evenly distributed on the tray. The fixing rings have a circular structure. The outer ring surface of the fixing ring is fixedly connected to the side of the circular hole. Each circular hole corresponds to two fixing rings, which are placed one above the other. The top surface of the upper fixing ring is on the same plane as the top surface of the test tube tray, and the bottom surface of the upper fixing ring has a circular sliding groove. The bottom surface of the lower fixing ring is on the same plane as the bottom surface of the test tube tray, and the top surface of the lower fixing ring has a circular sliding groove. There is a certain distance between the two fixing rings. The upright plate is placed between two fixed rings in the same group. The fixed rings are rotatably connected to the lower fixed ring via a rotating shaft, and the upright plate is placed close to the outer surface of the fixed ring. The clamping motor is fixedly connected to the upright plate. One end of the lead screw passes through the vertical plate and is fixedly connected to the motor shaft of the clamping motor, with a supporting bearing placed between it and the vertical plate. The diameter of the lead screw near the other end is larger than the diameter of the rest of the screw. The sliding block is fitted onto the smaller diameter portion of the sliding block and is threadedly connected to the lead screw. The second arc ring has a circular ring structure. A circular sliding rib is provided on the bottom surface of the second arc ring. The second arc ring is rotatably connected to the fixed ring below via the circular sliding rib and the circular sliding groove. The inner diameter of the second arc ring is the same as the inner diameter of the fixed ring. One end of the connecting rod is fixedly connected to the side of the second arc ring, and the other end of the connecting rod is rotatably connected to the sliding block via a rotating shaft. The first arc ring has a circular ring structure, and a circular sliding rib is provided on the top surface of the first arc ring. The first arc ring is rotatably connected to the fixed ring above it through the circular sliding rib and the circular sliding groove. The inner ring diameter of the first arc ring is the same as the inner ring diameter of the fixed ring. A square hollow component is placed between the first and second arc rings. The square hollow component has a square frame structure with its opening facing horizontally. The top of the square hollow component is rotatably connected to the first arc ring via a pivot, and the bottom of the square hollow component is rotatably connected to the second arc ring via a pivot. Each second arc ring corresponds to multiple square hollow components, and the number of square hollow components is greater than or equal to three. The multiple square hollow components are arranged at equal intervals along the circumference of their corresponding second arc rings. The cylindrical fixing block is fixedly connected to the top surface of the fixing ring described below, and is positioned between the outer ring surface of the second arc ring and the outer ring surface of the fixing ring. One end of the fixing pin is fixedly connected to the upper fixing ring, and the other end of the fixing pin is fixedly connected to the top surface of the cylindrical fixing block. The fixing pin extends vertically upwards from one end connected to the cylindrical fixing block, passes through the clamping strip to the other end, and is rotatably connected to the cylindrical fixing block near one end via the fixing pin. It also slides through the square hollowed-out kit and is slidably connected to it. The other end of the clamping strip has an arc-shaped structure. Furthermore, an anti-slip strip is attached to the curved surface of the other end of the clip. The anti-slip strip is made of rubber and has high friction. Furthermore, a sealing strip is fixedly placed on the top surface where the upper fixed ring intersects with the test tube tray. The sealing strip has a circular structure, with the inner ring diameter being smaller than the outer ring diameter of the fixed ring, and the outer ring diameter being larger than the outer ring diameter of the fixed ring.

[0007] The present invention also relates to a lifting and mixing device for test tube samples, the test tube sample lifting and mixing device comprising a support component and a mixing component. The support assembly consists of an arc-shaped bracket, a rotating sliding groove, an arc-shaped connecting block, and an L-shaped support frame. The arc-shaped support has a disc-shaped structure with an open top, and a square hole in the middle. The inner bottom surface of the arc-shaped bracket has a rotating sliding groove, which is circular in structure and coaxial with the arc-shaped bracket. The bottom surface of the arc-shaped connecting block is provided with a circular sliding rib. The arc-shaped connecting block is rotatably connected to the arc-shaped bracket through the circular sliding rib and the rotating sliding groove. The arc-shaped connecting block has a ring-shaped structure, and the radius of the inner side of the arc-shaped connecting block is greater than the distance from the central axis of the arc-shaped bracket to the four corners of its square hole. The top of the L-shaped support frame is fixedly connected to the bottom surface of the arc-shaped bracket. Multiple L-shaped support frames are provided, with a quantity of three or more, and these L-shaped support frames are arranged at equal intervals along the circumference of the arc-shaped bracket. The L-shaped support frame has an L-shaped structure. It extends vertically downward from one end connected to the arc-shaped bracket and then bends at a right angle in the opposite direction to the central axis of the arc-shaped bracket to the other end. The mixing assembly consists of a large gear, a rotary motor, fixed connectors, a drive shaft, a small gear, a second connecting rod, a first connecting rod, a test tube tray, a connecting shaft, different sized insertion holes, and test tubes. The bottom surface of the large gear is fixedly placed on the top surface of the arc-shaped connecting block, and the large gear has a ring-shaped structure. The top surface of the large gear has teeth, and multiple teeth are arranged at equal intervals along the circumference of the large gear. The rotary motor is fixedly mounted on the top surface of the arc-shaped bracket. The fixing connectors are fixedly placed on the inner bottom surface of the arc-shaped bracket. Each fixing connector has a cuboid structure and four connectors are arranged equidistantly along the circumference of the arc-shaped bracket. One side of each fixing connector corresponds to one side of a square hole inside the arc-shaped bracket, and they are all on the same plane. The fixing connectors are placed near the center of the side of the square hole in the arc-shaped bracket. The drive shaft passes through and is rotatably connected to the fixed connector, and a supporting bearing is placed between the drive shaft and the fixed connector. Each drive shaft corresponds to a fixed connector, and one end of each drive shaft is fixedly connected to the shaft of a rotary motor. The inner side of the pinion is fixedly connected to one end of the drive shaft. One of the pinions is positioned between the fixed connector and the rotary motor. The pinion meshes with multiple teeth on the large gear. One end of the second connecting rod is fixedly connected to the other end of the drive shaft, and the width at both ends of the second connecting rod is greater than the width at the middle. The other end of the second connecting rod is rotatably connected to the first connecting rod via a pivot. The width of the first connecting rod at both ends is greater than its width at the middle. The test tube tray has a rectangular parallelepiped structure with all four sides having the same width. The other end of the first connecting rod is rotatably connected to the center of the side of the test tube tray via a connecting shaft. The four outer sides of the positioning frame correspond one-to-one with the four first connecting rods. The test tube tray has insertion holes of different sizes, each hole being cylindrical and extending from the top to the bottom of the tray. Multiple insertion holes of different sizes are evenly distributed on the top surface of the test tube tray. Test tubes are connected to the test tube tray via insertion and removal through different sized insertion holes. Furthermore, a shock-absorbing pad is fixedly placed on the bottom surface of the L-shaped support frame from the bend to the other end. The shock-absorbing pad corresponds one-to-one with the L-shaped support frame, and the shock-absorbing pad is made of rubber. Furthermore, the sides of the different sized insertion holes are fixedly connected to the outer side of the rubber sealing strip. The rubber sealing strip has a circular structure, and each of the different sized insertion holes corresponds to multiple rubber sealing strips. The multiple rubber sealing strips are arranged at equal intervals along the axial direction of the different sized insertion holes. Beneficial effects

[0008] 1. It can automatically adjust the clamping position according to the diameter of the test tube, and can adapt to test tubes of different specifications.

[0009] 2. Fit the test tube tightly from different directions to ensure that the test tube will not shake or slip during the mixing process.

[0010] Third, the clamp has a large contact area with the test tube and the force is evenly distributed, which avoids damage to the test tube due to concentrated clamping force and ensures sample safety. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of a lifting and mixing device for test tube samples according to the present invention; Figure 2 This is a three-dimensional structural diagram of a lifting and mixing device for test tube samples according to the present invention; Figure 3 This is a three-dimensional structural diagram of Embodiment 2 of the test tube sample lifting and mixing device of the present invention; Figure 4 This is a three-dimensional structural diagram of Embodiment 3 of the test tube sample lifting and mixing device of the present invention; Figure 5 This is a three-dimensional structural diagram of a rotating clamping structure according to the present invention; Figure 6 This is a three-dimensional structural diagram of a rotating clamping structure according to the present invention; Figure 7 This is a perspective view of Embodiment 2 of the rotary clamping structure of the present invention; Figure 8 This is a three-dimensional structural diagram of embodiment 3 of the rotary clamping structure of the present invention. Attached Figure

[0012] The components are: test tube (1), different sized insertion holes (2), test tube tray (3), connecting shaft (4), first connecting rod (5), second connecting rod (6), arc bracket (7), L-shaped support frame (8), large gear (9), rotary motor (10), small gear (11), transmission shaft (12), fixed connector (13), arc connecting block (14), rotating sliding groove (15), shock absorber (16), rubber sealing strip (17), fixed ring (18), fixed pin (19), clamping strip (20), first arc ring (21), second arc ring (22), columnar fixing block (23), square hollow kit (24), connecting rod (25), sliding block (26), lead screw (27), upright plate (28), clamping motor (29), anti-slip strip (30), and sealing strip (31). Detailed Implementation Example 1

[0013] The present invention discloses a rotary clamping structure and a lifting and mixing device for test tube samples, which is implemented as follows: The rotary clamping structure of the present invention consists of a fixed ring (18), a vertical plate (28), a clamping motor (29), a lead screw (27), a sliding block (26), a second arc ring (22), a connecting rod (25), a first arc ring (21), a square hollow kit (24), a cylindrical fixing block (23), a fixing pin (19), and a clamping strip (20). The test tube tray (3) has multiple round holes, which are evenly distributed on the test tube tray (3). The fixing ring (18) has a circular structure. The outer ring surface of the fixing ring (18) is fixedly connected to the side of the circular hole. Each circular hole corresponds to two fixing rings (18). The two fixing rings (18) are placed one above the other. The top surface of the upper fixing ring (18) is on the same plane as the top surface of the test tube tray (3), and the bottom surface of the upper fixing ring (18) has a circular sliding groove. The bottom surface of the lower fixing ring (18) is on the same plane as the bottom surface of the test tube tray (3), and the top surface of the lower fixing ring (18) has a circular sliding groove. There is a certain distance between the two fixing rings (18). The upright plate (28) is placed between two fixed rings (18) in the same group. The fixed rings (18) are rotatably connected to the lower fixed ring (18) via a rotating shaft, and the upright plate (28) is placed close to the outer ring surface of the fixed rings (18). The clamping motor (29) is fixedly connected to the upright plate (28). One end of the lead screw (27) is inserted into the vertical plate (28) and fixedly connected to the motor shaft of the clamping motor (29), and a supporting bearing is placed between the lead screw (27) and the vertical plate (28). The diameter of the lead screw (27) near the other end is larger than the diameter of the other parts. The sliding block (26) is fitted onto the smaller diameter portion of the sliding block (26) and is threadedly connected to the lead screw (27). The second arc ring (22) has a circular ring structure. A circular sliding rib is placed on the bottom surface of the second arc ring (22). The second arc ring (22) is rotatably connected to the fixed ring (18) below through the circular sliding rib and the circular sliding groove. The inner ring diameter of the second arc ring (22) is the same as the inner ring diameter of the fixed ring (18). One end of the connecting rod (25) is fixedly connected to the side of the second arc ring (22), and the other end of the connecting rod (25) is rotatably connected to the sliding block (26) via a rotating shaft. The first arc ring (21) has a circular ring structure. A circular sliding rib is placed on the top surface of the first arc ring (21). The first arc ring (21) is rotatably connected to the fixed ring (18) above through the circular sliding rib and the circular sliding groove. The inner ring diameter of the first arc ring (21) is the same as the inner ring diameter of the fixed ring (18). A square hollow component (24) is placed between the first arc ring (21) and the second arc ring (22). The square hollow component (24) has a square frame structure and the opening is placed horizontally. The top of the square hollow component (24) is rotatably connected to the first arc ring (21) through a pivot, and the bottom of the square hollow component (24) is rotatably connected to the second arc ring (22) through a pivot. Each second arc ring (22) corresponds to multiple square hollow components (24). The number of square hollow components (24) is greater than or equal to three. Multiple square hollow components (24) are arranged equidistantly along the circumference of their corresponding second arc ring (22). The cylindrical fixing block (23) is fixedly connected to the top surface of the fixing ring (18) below, and is placed between the outer ring surface of the second arc ring (22) and the outer ring surface of the fixing ring (18). One end of the fixing pin (19) is fixedly connected to the upper fixing ring (18), and the other end of the fixing pin (19) is fixedly connected to the top surface of the cylindrical fixing block (23). The fixing pin (19) extends vertically upward from one end connected to the cylindrical fixing block (23), passes through the clamping strip (20), and reaches the other end. Near one end, the clamping strip (20) is rotatably connected to the cylindrical fixing block (23) via the fixing pin (19), and slidably connected to the square hollowed-out kit (24) via the square hollowed-out kit. The other end of the clamping strip (20) has an arc-shaped structure. In use, insert the test tube (1) between the fixed rings (18) from above the test tube tray (3), ensuring that the bottom of the test tube (1) is lower than the lowest end of the fixed ring (18). Then, start the clamping motor (29). The clamping motor (29) starts to run, and its motor shaft drives the lead screw (27) connected to it to rotate. As the lead screw (27) rotates, the sliding block (26) connected to it by the thread begins to slide on the lead screw (27). The sliding of the sliding block (26) is transmitted through the connecting rod (25), causing the second arc ring (22) to rotate counterclockwise. Since the first arc ring (21) and the second arc ring (22) are linked by the structure such as the square hollow kit (24), the first arc ring (21) also rotates counterclockwise in sync. During this process, multiple clamping strips (20) are on the first arc ring (21) and the second arc ring (22). Driven by the second arc ring (22), the other end rotates towards the central axis of the fixed ring (18) until the arc surface of the other end of the clamping strip (20) is in close contact with the side of the test tube (1), thereby achieving a stable fixation of the test tube (1). After the sample in the test tube (1) has been mixed, the operator holds the top of the test tube (1) and operates the clamping motor (29) again to make it rotate in the opposite direction. The reverse rotation of the clamping motor (29) drives the lead screw (27) to rotate in the opposite direction, and the sliding block (26) slides in the opposite direction. Through the connecting rod (25), the second arc ring (22) and the first arc ring (21) rotate clockwise. During this process, the other end of the multiple clamping strips (20) rotates in the opposite direction towards the central axis of the fixed ring (18), quickly releasing the clamping of the test tube (1), and the operator can easily remove the test tube (1). Example 2

[0014] The difference between this embodiment and embodiment 1 is that: an anti-slip strip (30) is attached to the arc-shaped surface of the other end of the clamping strip (20). The anti-slip strip (30) is made of rubber and has a large friction. When in use, the anti-slip strip (30) is in close contact with the test tube (1), which can effectively prevent the test tube from slipping during the fixing and mixing process. At the same time, its soft properties make it play a buffering role when the clamping strip (20) holds the test tube, avoiding rigid contact that could damage the test tube. It can protect the fragile glass or plastic test tube and ensure the integrity of the sample, thus improving the reliability and practicality of the device. Example 3

[0015] The difference between this embodiment and embodiment 1 is that a sealing strip (31) is fixedly placed on the top surface of the intersection of the upper fixed ring (18) and the test tube tray (3). The sealing strip (31) has a ring-shaped structure. The inner ring diameter of the sealing strip (31) is smaller than the outer ring diameter of the fixed ring (18), and the outer ring diameter of the sealing strip (31) is larger than the outer ring diameter of the fixed ring (18). When in use, the first arc ring (21) tightly fits the intersection of the fixed ring (18) and the test tube tray (3), effectively preventing liquid from seeping into the gap between them. This not only avoids bacterial growth due to liquid residue and ensures the hygiene of the experimental environment, but also prevents liquid from corroding the device, extends the service life of the equipment, and improves the reliability and stability of the device. The fixed ring (18) has a ring-shaped structure. The outer ring surface of the fixed ring (18) is fixedly connected to the side of the circular hole. Each circular hole corresponds to two fixed rings (18). The design of placing the two fixed rings (18) one above the other provides a stable foundation support for the entire rotating clamping structure, ensuring the stability of the structure during operation. It provides a precise positioning reference for fixing and rotating the test tube (1), ensuring the positional accuracy of the test tube during fixing and mixing. One end of the lead screw (27) is inserted into the vertical plate (28) and fixedly connected to the motor shaft of the clamping motor (29), and a support bearing is placed between it and the vertical plate (28). The design of the diameter of the lead screw (27) near the other end is larger than the diameter of other parts. Under the drive of the clamping motor (29), the lead screw (27) efficiently converts the rotational motion of the motor into the linear motion of the sliding block (26). The design of the larger diameter part avoids the sliding block (26) from disengaging from the lead screw (27), ensuring the stable operation of the entire transmission system, ensuring the accurate clamping and releasing action of the test tube, and avoiding device failure due to accidental disengagement of the sliding block, which would affect the experimental process. The clamping bar (20) is rotatably connected to the cylindrical fixing block (23) near one end by a fixing pin (19), and slides through the square hollow kit (24) and is connected to the square hollow kit (24). The other end is designed with an arc structure. Under the drive of the second arc ring (22) and the first arc ring (21), the arc end of the clamping bar (20) can rotate towards the central axis of the fixing ring (18) and contact the side of the test tube (1) to achieve effective clamping of the test tube. The arc structure design can better fit the outer surface of the test tube, increase the contact area with the test tube, make the clamping force more evenly distributed, and avoid the test tube from being damaged due to excessive local force. At the same time, during the rotation, the clamping bar (20) can flexibly adjust its position through the sliding connection with the square hollow kit (24) to adapt to the clamping needs of test tubes of different diameters, thus improving the versatility of the device.

[0016] The purpose is to achieve the following: the screw (27) is driven to rotate by the clamping motor (29), causing the sliding block (26) to slide and the arc ring to rotate via the connecting rod (25), so that the clamping bar (20) rotates towards the center to fix the test tube (1). The test tube (1) is released by the reverse rotation of the clamping bar (20) by the clamping motor (29).

[0017] The aforementioned lifting and mixing device for test tube samples comprises a support assembly and a mixing assembly. The support assembly consists of an arc-shaped bracket (7), a rotating sliding groove (15), an arc-shaped connecting block (14), and an L-shaped support frame (8). The arc-shaped support (7) has a disc-shaped structure with an open top. A square hole is opened in the middle of the arc-shaped support (7). The inner bottom surface of the arc-shaped bracket (7) has a rotating sliding groove (15), which is circular in structure and coaxial with the arc-shaped bracket (7). The bottom surface of the arc-shaped connecting block (14) is provided with a circular sliding rib. The arc-shaped connecting block (14) is rotatably connected to the arc-shaped bracket (7) through the circular sliding rib and the rotating sliding groove (15). The arc-shaped connecting block (14) has a ring-shaped structure, and the radius of the inner side of the arc-shaped connecting block (14) is greater than the distance from the central axis of the arc-shaped bracket (7) to the four corners of its square hole. The top of the L-shaped support frame (8) is fixedly connected to the bottom surface of the arc-shaped bracket (7). There are multiple L-shaped support frames (8), and the number is greater than or equal to three. The multiple L-shaped support frames (8) are arranged at equal intervals along the circumference of the arc-shaped bracket (7). The L-shaped support frame (8) has an L-shaped structure. The L-shaped support frame (8) extends vertically downward from one end connected to the arc-shaped bracket (7) and then bends at a right angle in the opposite direction to the central axis of the arc-shaped bracket (7) to the other end. The mixing assembly consists of a large gear (9), a rotary motor (10), a fixed connector (13), a transmission shaft (12), a small gear (11), a second connecting rod (6), a first connecting rod (5), a test tube tray (3), a connecting shaft (4), different specification insertion holes (2), and test tubes (1). The bottom surface of the large gear (9) is fixedly placed on the top surface of the arc-shaped connecting block (14). The large gear (9) has a ring-shaped structure. The top surface of the large gear (9) is provided with teeth, and a plurality of the teeth are arranged at equal intervals along the circumference of the large gear (9). The rotary motor (10) is fixedly placed on the top surface of the arc-shaped bracket (7). The fixing connector (13) is fixedly placed on the inner bottom surface of the arc-shaped bracket (7). The fixing connector (13) has a cuboid structure. There are four fixing connectors (13). The four fixing connectors (13) are arranged at equal intervals along the circumference of the arc-shaped bracket (7). One side of each fixing connector (13) corresponds to one side of the square hole in the arc-shaped bracket (7) and is on the same plane. The fixing connector (13) is placed near the center of the side of the square hole in the arc-shaped bracket (7). The drive shaft (12) passes through the fixed connector (13) and is rotatably connected to the fixed connector (13), and a support bearing is placed between the drive shaft (12) and the fixed connector (13). The drive shaft (12) and the fixed connector (13) correspond one-to-one. One end of one of the drive shafts (12) is fixedly connected to the motor shaft of the rotary motor (10). The inner side of the small gear (11) is fixedly connected to one end of the transmission shaft (12). One of the small gears (11) is placed between the fixed connector (13) and the rotary motor (10). The small gear (11) meshes with multiple teeth on the large gear (9). One end of the second connecting rod (6) is fixedly connected to the other end of the drive shaft (12), and the width at both ends of the second connecting rod (6) is greater than the width at the middle. The other end of the second connecting rod (6) is rotatably connected to the first connecting rod (5) via a pivot. The width of the two ends of the first connecting rod (5) is greater than the width of the middle part. The test tube dish (3) has a rectangular parallelepiped structure, and all four sides are the same width. The other end of the first connecting rod (5) is rotatably connected to the middle of the side of the test tube tray (3) via a connecting shaft (4). The four outer sides of the positioning frame correspond one-to-one with the four first connecting rods (5). The test tube tray (3) has insertion holes (2) of different specifications. The insertion holes (2) of different specifications are cylindrical and extend from the top surface of the test tube tray (3) to the bottom surface of the test tube tray (3). The test tube tray (3) has multiple insertion holes (2) of different specifications, which are evenly distributed on the top surface of the test tube tray (3). Test tubes (1) are connected to test tube trays (3) through different sized insertion holes (2). When in use, place the entire device stably, insert the test tube (1) into the different specification sockets (2) that match its size, so as to fix it to the test tube tray (3), drive the rotary motor (10) to drive the transmission shaft (12) to rotate, and through the meshing of the small gear (11) and the large gear (9), the large gear (9) can be driven to rotate, thereby driving multiple transmission shafts (12) to rotate synchronously. During the rotation of the transmission shaft (12), through the rotational connection between the second link (6) and the first link (5), the test tube tray (3) can be driven to move up and down to mix the sample in the test tube (1); Example 2

[0018] The difference between this embodiment and embodiment 1 is that: the L-shaped support frame (8) is fixed with a shock-absorbing pad (16) from the bend to the bottom surface of the other end. The shock-absorbing pad (16) corresponds one-to-one with the L-shaped support frame (8). The shock-absorbing pad (16) is made of rubber. When in use, the shock-absorbing pad (16) can effectively buffer the vibration generated during the operation of the device. At the same time, the rubber shock-absorbing pad (16) has a large friction force. When in contact with the ground, it can significantly increase the friction force between the device and the ground, effectively preventing the device from sliding due to vibration or external force during operation. Even on a relatively smooth experimental table, the device can be kept stable. Example 3

[0019] The difference between this embodiment and embodiment 1 is that the sides of the different specification sockets (2) are fixedly connected to the outer side of the rubber sealing strip (17). The rubber sealing strip (17) has a circular structure. Each different specification socket (2) corresponds to multiple rubber sealing strips (17). The multiple rubber sealing strips (17) are arranged equidistantly along the axial direction of the different specification sockets (2). When in use, the rubber sealing strip (17) greatly increases the contact friction between the test tube (1) and the different specification sockets (2), ensuring that the test tube (1) will not slip during frequent lifting and lowering movements and always maintains a stable position. The bottom surface of the arc-shaped connecting block (14) is provided with a circular sliding rib. The arc-shaped connecting block (14) is designed to rotate with the arc-shaped bracket (7) through the circular sliding rib and the rotating sliding groove (15). This design provides a stable and smooth rotation path for the arc-shaped connecting block (14), making the rotation of the large gear (9) and related components more stable, reducing jamming and wear during rotation, improving the stability and reliability of the device operation, and extending the service life of the device. The L-shaped structure extends vertically downward from the end connected to the arc-shaped bracket (7) and then bends at a right angle in the opposite direction to the central axis of the arc-shaped bracket (7), which increases the stability of the support and prevents the device from shaking or tipping over during operation. It also makes it easy to place the device on a flat surface and adapt to different working environments. It can be placed stably on a laboratory desktop or other working platform. The fixed connector (13) is fixedly placed on the inner bottom surface of the arc-shaped bracket (7). The four fixed connectors (13) are arranged equidistantly along the circumference of the arc-shaped bracket (7). One side of each fixed connector (13) corresponds to one side of the square hole in the arc-shaped bracket (7) and is on the same plane. The design of placing the fixed connector (13) close to the middle of the side of the square hole in the arc-shaped bracket (7) provides stable support and positioning for the drive shaft (12), so that the drive shaft (12) will not deviate during rotation, ensuring the accuracy of the meshing between the small gear (11) and the large gear (9), and also enhancing the stability of the entire device structure, avoiding the impact of the device operation on the shaking of the drive shaft (12). The drive shaft (12) passes through the fixed connector (13) and is rotatably connected to the fixed connector (13). The design of the support bearing between the drive shaft (12) and the fixed connector (13) reduces the friction during rotation and improves the transmission efficiency. Multiple drive shafts (12) rotate synchronously under the action of small gear (11) and large gear (9), providing stable power for the up and down movement of the test tube tray (3), ensuring the consistency and uniformity of sample mixing in the test tube (1), so that the sample in each test tube can be mixed to the same degree. The design that the width at both ends of the first link (5) and the second link (6) is greater than the width in the middle not only ensures the stability of the connection between the transmission shaft (12), the first link (5), the second link (6) and the test tube disk (3), but also reduces its own weight to a certain extent and improves the flexibility of movement; The test tube tray (3) has insertion holes (2) of different specifications. The insertion holes (2) of different specifications are cylindrical and extend from the top surface of the test tube tray (3) to the bottom surface of the test tube tray (3). The test tube tray (3) has multiple insertion holes (2) of different specifications. The design of multiple insertion holes (2) of different specifications evenly distributed on the top surface of the test tube tray (3) facilitates the insertion and removal of test tubes (1). The operation is simple and convenient. The design of different specifications makes the device compatible with various types of test tubes (1), which greatly improves the applicability of the device, reduces the experimental cost, and eliminates the need to purchase different mixing equipment for different test tubes.

[0020] The purpose of the device is to ensure stable placement through the support components and to achieve the purpose of lifting and mixing the sample in the test tube (1) by converting the rotational motion into up and down movement through the mixing components.

[0021] 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.

[0022] 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 rotary clamping structure, characterized in that: Composed of a fixed ring, a vertical plate, a clamping motor, a lead screw, a sliding block, a second arc ring, a connecting rod, a first arc ring, a square hollow kit, a cylindrical fixing block, a fixing pin, and clamping strips, the test tube tray has multiple circular holes. The outer ring surface of the fixed ring is fixedly connected to the side of the circular hole. Each circular hole corresponds to two fixed rings, which are placed one above the other. The bottom surface of the upper fixed ring has a circular sliding groove, and the top surface of the lower fixed ring has a circular sliding groove. The vertical plate is placed within the same group of two fixed rings. Between them, the fixed ring is rotatably connected to the lower fixed ring via a rotating shaft, and the upright plate is placed close to the outer ring surface of the fixed ring. The clamping motor is fixedly connected to the upright plate. One end of the lead screw passes through the upright plate and is fixedly connected to the motor shaft of the clamping motor. A support bearing is placed between the lead screw and the upright plate. The sliding block is fitted onto the smaller diameter part of the sliding block and is threadedly connected to the lead screw. The bottom surface of the second arc ring has a circular sliding rib. The second arc ring is rotatably connected to the lower fixed ring via the circular sliding rib and the circular sliding groove. Connecting rod one The first arc ring is fixedly connected to the side of the second arc ring. The connecting rod is rotatably connected to the sliding block via a rotating shaft near the other end. A circular sliding rib is provided on the top surface of the first arc ring. The first arc ring is rotatably connected to the upper fixed ring via the circular sliding rib and the circular sliding groove. A square hollow kit is placed between the first and second arc rings. The top of the square hollow kit is rotatably connected to the first arc ring via a rotating shaft. The bottom of the square hollow kit is rotatably connected to the second arc ring via a rotating shaft. A cylindrical fixing block is fixedly connected to the top surface of the lower fixed ring and is placed between the outer ring surface of the second arc ring and the outer ring surface of the fixed ring. One end of the fixing pin is fixedly connected to the upper fixed ring, and the other end of the fixing pin is fixedly connected to the top surface of the cylindrical fixing block. The fixing pin extends vertically upward from the end connected to the cylindrical fixing block, passes through the clamping strip to the other end, and is rotatably connected to the cylindrical fixing block near one end via the fixing pin. It also passes through the square hollow kit and is slidably connected to the square hollow kit. The rotating clamping structure needs to be installed on a lifting and mixing device for test tube samples.

2. The rotary clamping structure according to claim 1, characterized in that... An anti-slip strip is attached to the curved surface of the other end of the clip. The anti-slip strip is made of rubber and has a high friction.

3. The rotary clamping structure according to claim 1, characterized in that... A sealing strip is fixedly placed on the top surface where the upper fixed ring intersects with the test tube tray. The sealing strip has a circular structure, with the inner ring diameter being smaller than the outer ring diameter of the fixed ring, and the outer ring diameter being larger than the outer ring diameter of the fixed ring.

4. The rotary clamping structure according to claim 1, characterized in that... Multiple circular holes are evenly distributed on the test tube tray, and the fixing ring has a circular structure. The top surface of the fixing ring is on the same plane as the top surface of the test tube tray.

5. A rotary clamping structure according to claim 1, characterized in that... The bottom surface of the fixed ring and the bottom surface of the test tube tray are on the same plane, and there is a certain distance between the two fixed rings.

6. The rotary clamping structure according to claim 1, characterized in that... The diameter of the lead screw near the other end is larger than the diameter of the other parts, and the second arc ring has a circular structure.

7. A rotary clamping structure according to claim 1, characterized in that... The diameter of the inner ring of the second arc ring is the same as the diameter of the inner ring of the fixed ring, and the first arc ring has a circular structure.

8. A rotary clamping structure according to claim 1, characterized in that... The inner diameter of the first arc ring is the same as the inner diameter of the fixed ring. The square hollow kit has a square frame structure and the opening direction is horizontal.

9. A rotary clamping structure according to claim 1, characterized in that... Each of the second arcs corresponds to multiple square hollow kits, the number of which is greater than or equal to three. The multiple square hollow kits are arranged at equal intervals along the circumference of their corresponding second arcs, and the other end of the clamping strip has an arc-shaped structure.

10. A rotary clamping structure according to claim 1, characterized in that... The aforementioned lifting and mixing device for test tube samples comprises a support assembly and a mixing assembly. The support assembly consists of an arc-shaped bracket, a rotating sliding groove, an arc-shaped connecting block, and an L-shaped support frame. The arc-shaped bracket has a disc-shaped structure with an open top. A square hole is formed in the center of the arc-shaped bracket. A rotating sliding groove is formed on the inner bottom surface of the arc-shaped bracket. The rotating sliding groove has a circular structure and is coaxially arranged with the arc-shaped bracket. A circular sliding rib is provided on the bottom surface of the arc-shaped connecting block. The arc-shaped connecting block is rotatably connected to the arc-shaped bracket through the circular sliding rib and the rotating sliding groove. The arc-shaped connecting block has a ring-shaped structure. The radius of the inner side of the arc-shaped connecting block is greater than the distance from the central axis of the arc-shaped bracket to the four corners of its square hole. The top of the L-shaped support frame is connected to the arc-shaped bracket. The support base is fixedly connected, and multiple L-shaped support frames are provided, with a quantity of three or more. These L-shaped support frames are arranged equidistantly along the circumference of the arc-shaped support. Each L-shaped support frame has an L-shaped structure, extending vertically downwards from one end connected to the arc-shaped support and then bending at a right angle in the opposite direction to the central axis of the arc-shaped support to the other end. The mixing assembly consists of a large gear, a rotary motor, fixed connectors, a transmission shaft, a small gear, a second connecting rod, a first connecting rod, a test tube tray, a connecting shaft, different sized insertion holes, and test tubes. The bottom surface of the large gear is fixedly placed on the top surface of the arc-shaped connecting block. The large gear has a ring-shaped structure, and its top surface has teeth arranged equidistantly along the circumference of the large gear. The rotary motor is fixedly placed on the top surface of the arc-shaped support. A fixed connector is fixedly placed on the inner bottom surface of the arc-shaped bracket. The fixed connector has a cuboid structure, and four fixed connectors are arranged equidistantly along the circumference of the arc-shaped bracket. One side of each fixed connector corresponds to one side of a square hole inside the arc-shaped bracket, and they are on the same plane. The fixed connector is placed near the center of the side of the square hole in the arc-shaped bracket. A drive shaft passes through the fixed connector and is rotatably connected to it. A support bearing is placed between the drive shaft and the fixed connector. Each drive shaft corresponds one-to-one with a fixed connector. One end of one drive shaft is fixedly connected to the motor shaft of a rotary motor, and the inner side of a pinion is fixedly connected to the side of the drive shaft near one end. One pinion is placed between the fixed connector and the rotary motor. Multiple teeth on the small gear and the large gear mesh with each other. One end of the second connecting rod is fixedly connected to the other end of the transmission shaft. The width of the two ends of the second connecting rod is greater than the width in the middle. The other end of the second connecting rod is rotatably connected to the first connecting rod via a rotating shaft. The width of the two ends of the first connecting rod is greater than the width in the middle. The test tube tray has a cuboid structure with four sides of equal width. The other end of the first connecting rod is rotatably connected to the middle of the side of the test tube tray via a connecting rotating shaft. The four outer sides of the positioning frame correspond one-to-one with the four first connecting rods. The test tube tray has insertion holes of different specifications. The insertion holes of different specifications have a cylindrical structure and extend from the top surface of the test tube tray to the bottom surface. The test tube tray has multiple insertion holes of different specifications, which are evenly distributed on the top surface of the test tube tray.Test tubes are connected to the test tube tray via insertion and removal through sockets of different sizes.

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