Three-jaw sliding positioning piece and test tube sample lifting and uniform mixing device with three-jaw sliding positioning piece

Abstract

The invention relates to a three-jaw sliding positioning piece and a test tube sample lifting and blending device with the same, and discloses the three-jaw sliding positioning piece for stably clamping a test tube by driving a corresponding adjusting motor to rotate in the same direction and driving a vertical rod clamping jaw to slide towards a central shaft along an arc-shaped sliding rail through a connecting rod. The device is characterized in that the device is composed of electric push rods, a jacking disc, arc-shaped sliding rails, vertical rod clamping jaws, connecting rods and an adjusting motor, the electric push rods are fixedly arranged on a test tube disc, one ends of the electric push rods are fixedly connected with the top face of the test tube disc, and the multiple electric push rods are arranged on the test tube disc and evenly distributed on the top face of the test tube disc; the middle of the bottom face of each jacking disc is fixedly connected with the other end of the corresponding electric push rod, the jacking discs are of a disc-shaped structure and correspond to the electric push rods in a one-to-one mode, the distance between center shafts of the jacking discs is larger than the diameter of the jacking discs, and arc-shaped sliding rails are formed in the jacking discs and are of an arc-shaped strip-shaped structure.

Description

Technical Field

[0001] This invention relates to a three-jaw sliding positioning component and a lifting and mixing device for test tube samples, which is installed on a lifting and mixing device for test tube samples to position the test tubes. It belongs to the field of test tube mixing technology, and particularly relates to a positioning component that drives a corresponding adjusting motor to rotate in the same direction, and drives the upright clamping jaws to slide along the arc-shaped slide rail toward the central axis via a connecting rod to stably clamp the test tubes. Background Technology

[0002] Sample mixing is a crucial step in laboratory sample processing. 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 homogenization. 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 is designed to ensure stable placement of the device through a support component and to convert rotational motion into vertical movement through a mixing component, thereby achieving lifting and mixing of samples within the test tube. However, the aforementioned 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, failing to ensure stability throughout the mixing process and affecting the mixing effect and the accuracy of experimental results. Furthermore, while it can accommodate various common test tube outer diameters to some extent, in actual scientific research and experiments, test tube specifications are extremely diverse, 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. Summary of the Invention

[0005] To improve the above situation, the present invention provides a three-jaw sliding positioning component and a lifting and mixing device for test tube samples having the same. The three-jaw sliding positioning component is provided by driving a corresponding adjusting motor to rotate in the same direction, and driving the upright clamping jaws to slide along the arc-shaped slide rail toward the central axis via a connecting rod, thereby stably clamping the test tube.

[0006] The present invention discloses a three-jaw sliding positioning component and a lifting and mixing device for test tube samples containing the component, which are implemented as follows: The three-jaw sliding positioning component of the present invention consists of an electric push rod, a lifting plate, an arc-shaped slide rail, a vertical clamping jaw, a connecting rod, and an adjusting motor. An electric actuator is fixedly placed on a test tube tray, with one end of the actuator fixedly connected to the top surface of the test tube tray. Multiple electric actuators are provided on the test tube tray, and these actuators are evenly distributed on the top surface of the test tube tray. The lifting plate is fixedly connected to the other end of the electric actuator at the center of its bottom surface. The lifting plate has a disc-shaped structure, and each lifting plate corresponds to one electric actuator. The distance between the central axes of the lifting plates is greater than the diameter of the lifting plates. The lifting plate has an arc-shaped slide rail, which has an arc-shaped strip structure. The arc-shaped slide rail bends in an arc from one end near the side of the lifting plate towards the central axis of the lifting plate to the other end. Each lifting plate corresponds to a set of arc-shaped slide rails, and multiple arc-shaped slide rails in each set are arranged at equal intervals along the circumference of the corresponding lifting plate. One end of the upright clamp is positioned below the lifting plate. The upright clamp extends vertically upward from one end through the arc-shaped slide rail to the other end. Each upright clamp corresponds one-to-one with the arc-shaped slide rail. The upright clamp has a cylindrical structure. The connecting rod is fixedly connected to one end of the upright clamp near its top surface. The connecting rod has a long strip-shaped structure, with the width at both ends greater than the width in the middle. The connecting rod and the upright clamp are in one-to-one correspondence. The adjusting motor is fixedly placed on the top surface of the test tube tray. The motor shaft of the adjusting motor is fixedly connected to the bottom surface of the connecting rod near the other end. The adjusting motor and the connecting rod correspond one-to-one, and the central axis of the adjusting motor coincides with the central axis of its corresponding arc-shaped slide rail. Furthermore, a soft silicone layer is fitted onto the upright gripper. The soft silicone layer has a cylindrical structure, and its inner surface is in contact with the side surface of the upright gripper. Furthermore, the side of the arc-shaped slide rail is coated with a wear-resistant coating.

[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] Second, multiple upright clamps fit tightly against the test tube from different directions to ensure that the test tube will not shake or slip during the mixing process.

[0010] Third, by adjusting the forward and reverse rotation of the motor and the lifting and lowering of the electric push rod, the fixing and placement of test tubes can be completed quickly, simplifying the operation process and improving experimental efficiency. 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 three-claw sliding positioning component according to the present invention; Figure 6 This is a three-dimensional structural diagram of a three-claw sliding positioning component according to the present invention; Figure 7 This is a perspective structural diagram of Embodiment 2 of the three-claw sliding positioning component of the present invention; Figure 8 This is a three-dimensional structural diagram of Embodiment 3 of the three-claw sliding positioning component of the present invention. Attached Figure

[0012] Among them are: test tube (1), different specification sockets (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), upright clamp (18), lifting plate (19), arc slide rail (20), adjusting motor (21), connecting rod (22), electric push rod (23), soft silicone layer (24), wear-resistant coating (25). Detailed Implementation Example 1

[0013] The present invention discloses a three-jaw sliding positioning component and a lifting and mixing device for test tube samples containing the same, which is implemented as follows: The present invention discloses a three-jaw sliding positioning component and a lifting and mixing device for test tube samples containing the same, which consists of an electric push rod (23), a lifting plate (19), an arc-shaped slide rail (20), a vertical clamp (18), a connecting rod (22), and an adjusting motor (21). An electric actuator (23) is fixedly placed on a test tube tray (3). One end of the electric actuator (23) is fixedly connected to the top surface of the test tube tray (3). Multiple electric actuators (23) are provided on the test tube tray (3), and the multiple electric actuators (23) are evenly distributed on the top surface of the test tube tray (3). The bottom center of the lifting plate (19) is fixedly connected to the other end of the electric push rod (23). The lifting plate (19) has a disc-shaped structure, and the lifting plate (19) corresponds one-to-one with the electric push rod (23). The distance between the central axes of the lifting plates (19) is greater than the diameter of the lifting plates (19). The lifting plate (19) has an arc-shaped slide rail (20). The arc-shaped slide rail (20) has an arc-shaped strip structure. The arc-shaped slide rail (20) bends in an arc shape from one end near the side of the lifting plate (19) towards the central axis of the lifting plate (19) to the other end. Each lifting plate (19) corresponds to a set of arc-shaped slide rails (20). Multiple arc-shaped slide rails (20) in each set are arranged at equal intervals around the circumference of their corresponding lifting plate (19). One end of the upright clamp (18) is placed below the lifting plate (19). The upright clamp (18) extends vertically upward from one end through the arc-shaped slide rail (20) to the other end. The upright clamp (18) corresponds one-to-one with the arc-shaped slide rail (20). The upright clamp (18) has a cylindrical structure. The connecting rod (22) is fixedly connected to one end of the upright clamp (18) near its top surface. The connecting rod (22) has a long strip structure, and the width at both ends is greater than the width in the middle. The connecting rod (22) corresponds one-to-one with the upright clamp (18). The adjusting motor (21) is fixedly placed on the top surface of the test tube tray (3). The motor shaft of the adjusting motor (21) is fixedly connected to the bottom surface of the connecting rod (22) near the other end. The adjusting motor (21) and the connecting rod (22) correspond one-to-one, and the central axis of the adjusting motor (21) coincides with the central axis of its corresponding arc-shaped slide rail (20). In use, gently place the test tube (1) near the center of the lifting plate (19), and drive the multiple adjusting motors (21) corresponding to the lifting plate (19) to rotate synchronously in the same direction. The motor shaft of the adjusting motor (21) drives the connecting rod (22) connected to it to rotate. The connecting rod (22) then pulls the upright clamp (18). Since the arc-shaped slide rail (20) limits the upright clamp (18), the multiple upright clamps (18) slide along the arc-shaped slide rail (20) on the lifting plate (19) towards the central axis of the lifting plate (19) until the side of the upright clamp (18) is tightly attached to the test tube (1), thereby accurately and stably fixing the position of the test tube (1) and completing the test tube (1). After being fixed, the test tube tray (3) in the main patent starts to operate, and mixes the sample in the test tube (1) through its lifting action. When the sample is mixed, the electric push rod (23) is activated. The electric push rod (23) pushes the lifting plate (19) upward, so that the top of the test tube (1) is higher than the top of the upright clamp (18). At this time, the staff holds the top of the test tube (1) and drives the adjustment motor (21) corresponding to the lifting plate (19) to make it rotate in the opposite direction. Under the reverse drive of the adjustment motor (21), the connecting rod (22) drives the upright clamp (18) to slide in the opposite direction along the arc slide rail (20), quickly loosening the clamp on the test tube (1) and making it easy for the staff to take out the test tube (1). Example 2

[0014] The difference between this embodiment and embodiment 1 is that: a soft silicone layer (24) is fitted on the upright clamp (18). The soft silicone layer (24) has a cylindrical structure. The inner side of the soft silicone layer (24) is in contact with the side of the upright clamp (18). When in use, the soft silicone layer (24) is in close contact with the outer wall of the test tube, which can greatly increase the friction between the two. During the sample mixing process, it can effectively prevent the test tube from falling off due to these external forces, ensuring that the test tube remains stable throughout the mixing process. At the same time, the soft silicone layer (24) can evenly disperse the clamping force of the upright clamp (18) on the test tube, avoiding the test tube from breaking due to excessive local force. Example 3

[0015] The difference between this embodiment and embodiment 1 is that the arc-shaped slide rail (20) is coated with a wear-resistant coating (25) on its side. When in use, the friction between the upright clamp (18) and the arc-shaped slide rail (20) will cause the surfaces of the two to wear gradually. The wear-resistant coating (25) can effectively resist the wear caused by friction, reduce the loss of surface materials, and maintain the structural integrity and accuracy of the arc-shaped slide rail (20). The multiple electric push rods (23) are evenly distributed on the top surface of the test tube tray (3), and one end is fixedly connected to the test tube tray (3), while the other end is connected to the lifting plate (19). This design allows the lifting plate (19) to be moved upward by driving the electric push rods (23) after the sample is mixed, so that the top of the test tube (1) is higher than the top of the upright clamp (18), making it convenient for staff to hold the top of the test tube (1) and take it out. This greatly improves the convenience of operation and reduces the difficulty and time cost of manual operation. The arc-shaped slide rail (20) on the lifting plate (19) is designed to bend in an arc from one side towards the central axis. Combined with the upright clamp (18) and the connecting rod (22), it can achieve precise positioning of the upright clamp (18), so that the upright clamp (18) moves closer to the test tube (1) along a predetermined arc trajectory during the sliding process, thereby achieving stable clamping of the test tube and ensuring that the test tube will not be affected by shaking during the sample mixing process. At the same time, the upright clamp (18) can automatically adjust the clamping position according to the diameter of the test tube (1) during the sliding process. For test tubes with smaller diameters, the clamp is close to the test tube near the central axis of the lifting plate (19), and for test tubes with larger diameters, the clamp is close to the test tube near the edge of the lifting plate (19), thereby achieving effective clamping of test tubes with different diameters and further improving the versatility of the device. The connecting rod (22) has a long strip structure with the width at both ends being greater than the width in the middle. One end is fixedly connected to the upright clamp (18), and the other end is fixedly connected to the motor shaft of the regulating motor (21). This design can effectively transmit the rotational power of the regulating motor (21) to the upright clamp (18), causing the upright clamp (18) to slide along the arc-shaped slide rail (20). The wider design at both ends increases the connection stability with the upright clamp (18) and the regulating motor (21), ensuring that there will be no loosening or disconnection during the power transmission process, thus ensuring the reliability of the device operation. The purpose is to achieve the goal of stably clamping the test tube (1) by driving the corresponding adjustment motor (21) to rotate in the same direction, and driving the upright clamp (18) to slide along the arc slide rail (20) towards the central axis via the connecting rod (22).

[0016] It should be noted that the three-claw sliding positioning structure needs to be installed in the following type of lifting and mixing device for test tube samples; 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) are in one-to-one correspondence. 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

[0017] 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

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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 three-jaw sliding positioning component, characterized in that: It consists of an electric actuator, a lifting plate, an arc-shaped slide rail, a vertical clamp, a connecting rod, and an adjusting motor. The electric actuator is fixedly placed on the test tube tray, with one end fixedly connected to the top surface of the test tube tray. The middle of the bottom surface of the lifting plate is fixedly connected to the other end of the electric actuator. The lifting plate has an arc-shaped slide rail, with each lifting plate corresponding to a set of arc-shaped slide rails. Multiple arc-shaped slide rails in each set are arranged equidistantly along the circumference of their corresponding lifting plate. One end of the vertical clamp is placed below the lifting plate, and the vertical clamp extends vertically upward from one end through the arc-shaped slide rail to the other end. The top surface of the connecting rod near one end is fixedly connected to one end of the vertical clamp. The adjusting motor is fixedly placed on the top surface of the test tube tray, and the motor shaft of the adjusting motor is fixedly connected to the bottom surface of the connecting rod near the other end. The three-jaw sliding positioning component needs to be installed on a lifting and mixing device for test tube samples.

2. A three-claw sliding positioning component according to claim 1, characterized in that... A soft silicone layer is fitted onto the upright clamp, the soft silicone layer having a cylindrical structure, and the inner side of the soft silicone layer being in contact with the side of the upright clamp.

3. A three-jaw sliding positioning component according to claim 1, characterized in that... The sides of the arc-shaped slide rail are coated with a wear-resistant coating.

4. A three-claw sliding positioning component according to claim 1, characterized in that... The test tube tray is equipped with multiple electric actuators, which are evenly distributed on the top surface of the test tube tray. The lifting plate has a disc-shaped structure, and each lifting plate corresponds to one of the electric actuators.

5. A three-claw sliding positioning component according to claim 1, characterized in that... The distance between the central axes of the lifting plates is greater than the diameter of the lifting plates, and the arc-shaped slide rail has an arc-shaped strip structure.

6. A three-claw sliding positioning component according to claim 1, characterized in that... The arc-shaped slide rail bends in an arc from one end near the side of the lifting plate towards the central axis of the lifting plate to the other end.

7. A three-claw sliding positioning component according to claim 1, characterized in that... The upright clamps correspond one-to-one with the arc-shaped slide rails, and the upright clamps have a cylindrical structure.

8. A three-claw sliding positioning component according to claim 1, characterized in that... The connecting rod has a long strip-shaped structure, and the width at both ends is greater than the width in the middle. The connecting rod corresponds one-to-one with the clamp of the upright.

9. A three-jaw sliding positioning component according to claim 1, characterized in that... The adjusting motor corresponds one-to-one with the connecting rod, and the central axis of the adjusting motor coincides with the central axis of the corresponding arc-shaped slide rail.

10. A three-claw sliding positioning component 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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