Bidirectional telescopic device and working method thereof

Abstract

A bidirectional telescopic device and a working method thereof. The bidirectional telescopic device comprises a base (100), an active telescopic member (200), a linkage telescopic member (300), a transmission mechanism, a linkage mechanism, and a drive motor (600) capable of forward and reverse rotation. The base (100), the active telescopic member (200), and the linkage telescopic member (300) are sequentially arranged from bottom to top; the transmission mechanism is arranged between the base (100) and the active telescopic member (200); the drive motor (600) drives, by means of the transmission mechanism, the active telescopic member (200) to perform bidirectional telescopic movement in a length direction; and the linkage mechanism can drive the linkage telescopic member (300) to simultaneously perform telescopic movement in the movement direction of the active telescopic member (200). The bidirectional telescopic device can achieve, by means of one drive motor (600), bidirectional and coordinated telescopic movement of the entire bidirectional telescopic device, and the linkage telescopic member (300) can move synchronously with the active telescopic member (200) by means of the linkage mechanism, thereby simplifying the structure of the device, reducing manufacturing costs, and improving the efficiency and precision of the telescopic movement.

Description

A bidirectional telescopic device and its working method Technical Field

[0001] This invention relates to a bidirectional telescopic device and its working method, belonging to the technical field of transmission devices. Background Technology

[0002] In intelligent automated analytical systems, sample transfer and analysis are crucial steps in laboratory automation. Traditional automated analytical systems primarily rely on a single-tube approach as the basic unit for sample transfer. The sample is placed in a test tube, which is then mounted on a tube holder. When the tube holder reaches the branch track containing the analytical device, the sample is aspirated and transferred to the corresponding device to complete a series of experimental steps and analyses. While this method achieves a degree of automation, its efficiency is limited when processing large numbers of samples.

[0003] To improve throughput efficiency and accommodate different types of analytical equipment, analytical devices using test tube racks as throughput units have emerged on the market. Test tube racks can hold multiple test tubes simultaneously and can be reused repeatedly, thus reducing the additional need for test tube racks within the system. This throughput method demonstrates a significant advantage in improving sample processing efficiency. To integrate different types of analytical equipment into a pipeline analytical system, existing technology also provides a sample transfer system. This system, after assembling single tubes into a test tube rack, typically requires the test tube rack to be transported to the analytical equipment through a specific channel; after testing, the test tube rack needs to return to the test tube rack carrying device through a specific channel. However, while this setup achieves sample throughput to some extent, it strictly limits the input or output sequence of the test tube racks, making the scheduling of the test tube racks inflexible, thereby affecting the overall analytical efficiency of the pipeline analytical system.

[0004] Furthermore, traditional sample rack transfer devices are often bulky, occupying a significant amount of laboratory space, and are structurally complex with limited functionality. This not only increases the difficulty of laboratory layout but also raises equipment costs. In the increasingly space-constrained modern laboratory environment, miniaturization and integration of equipment have become urgent needs.

[0005] Therefore, a bidirectional telescopic device is needed that can flexibly schedule test tube racks, improve analytical efficiency, and is small in size and compact in structure to meet the transfer requirements of sample racks.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] The purpose of this invention is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0008] The technical solution provided by this invention is as follows: A bidirectional telescopic device includes a base, an active telescopic component, a linked telescopic component, a transmission mechanism, a linkage mechanism, and a forward and reverse reversible drive motor. The base, the active telescopic component, and the linked telescopic component are arranged sequentially from bottom to top. The transmission mechanism is disposed between the base and the active telescopic component. The drive motor drives the active telescopic component to perform bidirectional telescopic movement along the length direction through the transmission mechanism. The linkage mechanism can drive the linked telescopic component to simultaneously telescopically move along the movement direction of the active telescopic component.

[0009] Compared with existing technologies, the technical solution provided by this invention has the following advantages: This invention achieves bidirectional, coordinated telescopic movement of the entire bidirectional telescopic device using only one drive motor, which not only simplifies the device structure and reduces manufacturing costs but also improves the efficiency and precision of the telescopic movement. Furthermore, the use of a linkage mechanism allows the linked telescopic component to move synchronously with the active telescopic component, further enhancing the practicality and stability of the bidirectional telescopic device.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the transmission mechanism includes a main shaft, a first worm gear mechanism, a second worm gear mechanism, and a rack. The main shaft is rotatably mounted on the base and driven to rotate by the drive motor. The rack is mounted on the active telescopic member and is aligned with the sliding direction of the active telescopic member. The first worm gear mechanism and the second worm gear mechanism are respectively disposed at both ends of the main shaft, and the rack maintains a transmission relationship with at least one of the first worm gear mechanism and the second worm gear mechanism.

[0012] The beneficial effect of adopting the above-mentioned further solution is that when the drive motor starts and drives the main shaft to rotate, the first worm gear mechanism and the second worm gear mechanism will operate synchronously. During the movement, the rack will maintain a transmission relationship with at least one of the two worm gear mechanisms, so that the active telescopic component can extend and retract along the length direction of the rack. Its maximum extension length is almost equal to the total length of the rack. Adding the extension length of the linkage telescopic component, when the bidirectional telescopic device extends to the limit position on one side, its total unidirectional extension length can reach the sum of the lengths of the active telescopic component, the linkage telescopic component, and the base, minus the length of the overlap between the active telescopic component and the linkage telescopic component, and between the active telescopic component and the base designed due to the addition of support. In addition, the drive motor equipped with the bidirectional telescopic device can drive the main shaft to rotate in both directions, thereby ensuring that the active telescopic component can perform bidirectional telescopic movement. Therefore, in the case of bidirectional extension, the total movement length of the active telescopic component and the linkage telescopic component is twice that in the unidirectional case, but the base length remains unchanged. Therefore, the calculation of the total bidirectional movement length requires doubling the lengths of the active telescopic component and the linkage telescopic component, and then adding the base length. Therefore, when the bidirectional telescopic device extends to its limit position in two opposite directions, its total bidirectional movement length can reach twice the length of the active telescopic component, twice the length of the linkage telescopic component, and the base length, minus the length of the overlapping portion designed for the addition of support between the active telescopic component and the linkage telescopic component, and between the active telescopic component and the base. Therefore, by designing a smaller overlapping portion size, the telescopic range of the bidirectional telescopic device can be effectively expanded.

[0013] Furthermore, the first worm gear mechanism includes a first worm, a first linkage gear, and a first worm wheel meshing with the first worm; the second worm gear mechanism includes a second worm, a second linkage gear, and a second worm wheel meshing with the second worm; the first worm and the second worm are respectively mounted at both ends of the main shaft; the first worm wheel and the second worm wheel are respectively rotatably mounted at both ends of the base; the first linkage gear is coaxially connected to the first worm wheel and can rotate synchronously; the second linkage gear is coaxially connected to the second worm wheel and can rotate synchronously; and the rack can mesh with at least one of the first linkage gear and the second linkage gear.

[0014] The beneficial effects of adopting the above-mentioned further solution are that by installing the first worm gear mechanism and the second worm gear mechanism at both ends of the main shaft and the base respectively, a bidirectional telescopic function is realized. The coaxial connection of the first and second linkage gears with the worm gear ensures the synchronous transmission of power and the smooth operation of the telescopic movement. The meshing of the rack and the linkage gears enables the telescopic device to accurately control the length of extension or retraction, thereby improving the accuracy and reliability of the telescopic device. Overall, the invention has a compact structure and reasonable design, can effectively realize the bidirectional telescopic function, and has high stability and durability.

[0015] Furthermore, the spindle includes a left shaft, an intermediate shaft, and a right shaft. The left shaft is connected to the left end of the intermediate shaft via a left coupling, and the right shaft is connected to the right end of the intermediate shaft via a right coupling. The first worm gear is mounted on the left shaft, and the second worm gear is mounted on the right shaft.

[0016] The beneficial effects of adopting the above-mentioned further solutions are that the split spindle design makes it easier to install, debug and maintain each part, greatly improving the flexibility and maintainability of the transmission mechanism. The left and right shafts are connected to the intermediate shaft through a coupling, ensuring smooth power transmission and reducing transmission losses caused by loose or worn parts, thereby improving transmission efficiency. The split spindle design allows the transmission mechanism to better adapt to different working environments and installation conditions, improving its application range and adaptability.

[0017] Furthermore, the linkage mechanism includes a first transmission belt and a second transmission belt. One end of the first transmission belt is fixed to the left side of the base, and after passing around the first pulley installed on the right side of the active telescopic member, it is connected to the left side of the linkage telescopic member. One end of the second transmission belt is fixed to the right side of the base, and after passing around the second pulley installed on the left side of the linkage telescopic member, it is connected to the right side of the linkage telescopic member.

[0018] The beneficial effects of adopting the above-mentioned further solution are that, through the first transmission belt and the second transmission belt, i.e., the double transmission belt solution, not only can the linkage telescopic component move synchronously with the extension and retraction of the active telescopic component, effectively avoiding the problem of inconsistent extension and retraction caused by transmission errors, thereby improving the coordination of the entire bidirectional telescopic device, but also, through the joint action of the two transmission belts, the stability of the transmission mechanism is significantly enhanced. Even when subjected to large loads or encountering external impacts, it can maintain smooth extension and retraction movement, enhancing the stability of the overall structure.

[0019] Furthermore, the first and second transmission belts are connected to the linkage telescopic component via the first and second pressure blocks, respectively. The first and second pressure blocks are provided with elongated holes, and the linkage telescopic component is provided with corresponding screw holes. The tension of the transmission belts can be adjusted by adjusting the mating position of the elongated holes and the screw holes.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the elongated hole design on the first and second pressure blocks allows for convenient adjustment of the tension of the transmission belt, ensuring the stability and reliability of the transmission system.

[0021] Furthermore, a track and a groove are provided between the base and the active telescopic member, and between the active telescopic member and the linkage telescopic member. A row of horizontal rollers and a row of vertical rollers are installed on both sides of the track. The horizontal rollers and the vertical rollers rotate around the horizontal axis and the vertical axis respectively, and contact the corresponding side of the groove.

[0022] The beneficial effects of adopting the above-mentioned further solution are that it reduces the coefficient of friction, transforms sliding friction into rolling friction, improves the motion efficiency and smoothness of the bidirectional telescopic device, and extends the service life of the device.

[0023] Furthermore, the horizontal rollers located in the same row are staggered in the vertical direction.

[0024] The beneficial effect of adopting the above-mentioned further solution is that it further optimizes the effect of rolling friction, transforming the sliding friction that may exist between the groove and the horizontal roller into rolling friction. This not only significantly reduces the coefficient of friction, but also improves the motion efficiency and smoothness of the bidirectional telescopic device, while also helping to extend its service life.

[0025] Furthermore, the linkage telescopic component is equipped with a loading lever, a mechanical gripper, or a support platform.

[0026] The beneficial effect of adopting the above-mentioned further solution is that the lever can drive the sample carrier and other devices to move, thereby facilitating the loading and unloading of the sample carrier. The loading lever can also be equipped with a sensor for sensing objects, and the linkage telescopic component can also be equipped with a mechanical gripper for gripping and placing the sample carrier. The top surface of the linkage telescopic component can also be provided with one or more sample support platforms, so that the linkage telescopic component itself becomes a carrier. In this way, the analytical instrument or external gripper can directly place the product on the support platform for movement.

[0027] Furthermore, one or more light sensors are respectively provided at both ends of the base, and a baffle is provided on the active telescopic member to cooperate with the light sensors. The baffle can move with the active telescopic member and selectively block one or more of the light sensors during the movement.

[0028] The beneficial effect of adopting the above-mentioned further solution is that when the active telescopic component moves, if the baffle blocks the left light sensor, it indicates that the active telescopic component has moved to the left side of the base; if the baffle blocks the right light sensor, it indicates that the active telescopic component has moved to the right side of the base. Through the light sensor, the bidirectional telescopic device of the present invention realizes accurate detection and judgment of the movement direction of the active telescopic component, providing reliable position feedback information for subsequent automated control, thereby improving the intelligence level and operating efficiency of the entire bidirectional telescopic device.

[0029] Furthermore, it also includes a lifting mechanism, which includes a lifting motor, a lifting plate, and a base plate. The cylinder of the lifting motor is fixed on the base plate, the telescopic shaft of the lifting motor is connected to the lifting plate, and the base is installed above the lifting plate. The telescopic shaft of the lifting motor can extend and retract to drive the bidirectional telescopic device to rise and fall.

[0030] The beneficial effect of adopting the above-mentioned further solution is that the lifting mechanism enables the entire device to be raised and lowered flexibly, greatly enhancing its ability to adapt to different working height requirements.

[0031] Furthermore, it also includes a rotating mechanism that can drive the bidirectional telescopic device to rotate.

[0032] The beneficial effect of adopting the above-mentioned further solutions is that it increases the flexibility and applicability of the bidirectional telescopic device.

[0033] Furthermore, the bottom of the telescopic link is provided with a first limiting boss and a second limiting boss. The first limiting boss cooperates with the first pulley to limit the extreme position of the telescopic link extending to one side, and the second limiting boss cooperates with the second pulley to limit the extreme position of the telescopic link extending to the other side.

[0034] The beneficial effect of adopting the above-mentioned further solution is that the first and second limiting bosses provide reliable limiting protection for the telescopic movement of the linkage component, avoiding damage or safety hazards caused by excessive extension or retraction. When the linkage telescopic component extends or retracts to its limit position, the light sensor installed on the base can sensitively detect its position and transmit signals in a timely manner for intelligent control or protection. At the same time, the length of the transmission belt also plays an additional limiting role, forming a complete safety protection mechanism together with the limiting bosses.

[0035] A method for operating a bidirectional telescopic device is as follows:

[0036] In the initial stage, the first and second worm gear mechanisms of the transmission mechanism simultaneously mesh with the rack. When the drive motor starts and drives the main shaft to rotate in the forward direction, the first and second worm gear mechanisms together push the active telescopic component to move away from the second worm gear mechanism. The rack gradually disengages from the second worm gear mechanism and remains engaged only with the first worm gear mechanism. The first worm gear mechanism continues to transmit power to the rack through its rotational engagement with the main shaft, thereby pushing the active telescopic component to continue moving until it reaches the set position and stops.

[0037] During the movement of the active telescopic component, the first pulley of the linkage mechanism will push the first transmission belt to extend away from the second worm gear mechanism, thereby causing the first transmission belt to drive the linkage telescopic component to move synchronously away from the second worm gear mechanism.

[0038] When the active telescopic component needs to move in the opposite direction, the drive motor drives the main shaft to rotate in the opposite direction. The rack remains engaged with the first worm gear mechanism, which pushes the active telescopic component towards the second worm gear mechanism. As the active telescopic component moves in the opposite direction and gradually returns to its initial state, the first and second worm gear mechanisms engage with the rack simultaneously. The rack gradually disengages from the first worm gear mechanism while maintaining engagement with the second worm gear mechanism. The second worm gear mechanism, through its rotational engagement with the main shaft, transmits power to the rack, and the rack's movement drives the active telescopic component away from the first worm gear mechanism.

[0039] During the reverse movement of the active telescopic component, the second pulley of the linkage mechanism pushes the second transmission belt to extend away from the first worm gear mechanism, thereby causing the second transmission belt to drive the linkage telescopic component to move synchronously away from the first worm gear mechanism until it reaches the set position and stops. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0041] Figure 1 is a three-dimensional structural schematic diagram of the bidirectional telescopic device of the present invention;

[0042] Figure 2 is a three-dimensional structural diagram of the bidirectional telescopic device of the present invention from the rear view angle;

[0043] Figure 3 is a schematic diagram of the internal transmission mechanism of the bidirectional telescopic device of the present invention;

[0044] Figure 4 is a three-dimensional structural diagram of the bidirectional telescopic device of the present invention extending to the left.

[0045] Figure 5 is a front view of the bidirectional telescopic device of the present invention extended to the right.

[0046] Figure 6 is an enlarged structural schematic diagram of point A in Figure 5 of the present invention;

[0047] Figure 7 is a top view of Figure 5 of the present invention;

[0048] Figure 8 is a front view of the bidirectional telescopic device of the present invention extended to the left;

[0049] Figure 9 is an enlarged structural schematic diagram of point B in Figure 8 of the present invention;

[0050] Figure 10 is a top view of Figure 8 of the present invention;

[0051] Figure 11 is a simplified structural diagram of the installation of the first transmission belt with the base, active telescopic component and linkage telescopic component of the present invention.

[0052] Figure 12 is a simplified structural diagram of the installation of the second transmission belt with the base, active telescopic component and linkage telescopic component of the present invention.

[0053] Figure 13 is a schematic diagram of the extension structure of the first transmission belt when the active telescopic member of the present invention extends to the right.

[0054] Figure 14 is a schematic diagram of the extension structure of the second transmission belt when the active telescopic member of the present invention extends to the right.

[0055] Figure 15 is a schematic diagram of the extension structure of the first transmission belt when the active telescopic member of the present invention extends to the left.

[0056] Figure 16 is a schematic diagram of the extension structure of the second transmission belt when the active telescopic member of the present invention extends to the left.

[0057] In the diagram, 100 is the base; 200 is the active telescopic component; 300 is the linkage telescopic component; and 310 is the loading lever.

[0058] 410. Main shaft; 411. Left shaft body; 412. Intermediate shaft body; 413. Right shaft body; 414. Left coupling; 415. Right coupling; 421. First worm gear; 422. First worm wheel; 423. First linkage gear; 431. Second worm gear; 432. Second worm wheel; 433. Second linkage gear; 440. Rack;

[0059] 510, First transmission belt; 520, Second transmission belt; 530, First pressure block; 540, Second pressure block; 550, First pulley; 560, Second pulley; 570, First limiting boss; 580, Second limiting boss;

[0060] 600. Drive motor;

[0061] 710, Left light sensor; 720, Right light sensor; 730, Middle light sensor; 740, Baffle;

[0062] 800. Lifting mechanism; 810. Lifting motor; 820. Lifting platform; 830. Base plate;

[0063] 910. First horizontal roller; 920. First vertical roller; 930. Second horizontal roller; 940. Second vertical roller. Detailed Implementation

[0064] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0065] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0066] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0067] As shown in Figures 1-10, a bidirectional telescopic device includes a base 100, an active telescopic member 200, a linked telescopic member 300, a transmission mechanism, a linkage mechanism, and a forward and reverse reversible drive motor 600. The base 100, the active telescopic member 200, and the linked telescopic member 300 are arranged sequentially from bottom to top. The transmission mechanism is located between the base 100 and the active telescopic member 200. The drive motor 600 drives the active telescopic member 200 to perform bidirectional telescopic movement along its length direction through the transmission mechanism. The linkage mechanism can drive the linked telescopic member 300 to simultaneously telescopically move along the movement direction of the active telescopic member 200.

[0068] More specifically, as shown in Figure 3, the transmission mechanism includes a main shaft 410, a first worm gear mechanism, a second worm gear mechanism, and a rack 440. The main shaft 410 is rotatably mounted on the base 100 and is driven to rotate by the drive motor 600. In this embodiment of the invention, the transmission connection between the drive motor 600 and the main shaft 410 is not limited; power can be transmitted between the drive motor 600 and the main shaft 410 via chain drive, belt drive, or gear drive. The rack 440 is mounted on the active telescopic member 200 and slides in the same direction as the active telescopic member 200. The first worm gear mechanism and the second worm gear mechanism are respectively located at both ends of the main shaft 410 and, through forward and reverse rotational cooperation with the main shaft 410, transmit power to the rack 440. The movement of the rack 440 then drives the active telescopic member 200 to achieve bidirectional telescopic movement. When the drive motor 600 starts and drives the main shaft 410 to rotate, the first and second worm gear mechanisms operate synchronously. During movement, the rack 440 maintains a transmission relationship with at least one of these two worm gear mechanisms, allowing the active telescopic member 200 to extend and retract along the length of the rack 440. Combined with the extension length of the linkage telescopic member 300, when the bidirectional telescopic device extends to its single-sided limit position, its total unidirectional extension length is equal to the sum of the lengths of the active telescopic member 200, the linkage telescopic member 300, and the base 100, minus the length of the overlap portion designed for added support between the active telescopic member 200 and the linkage telescopic member 300, and between the active telescopic member 200 and the base 100. Therefore, by designing a smaller overlap portion, the telescopic range of the bidirectional telescopic device can be effectively expanded. Furthermore, the drive motor 600 can drive the main shaft 410 to rotate in both directions, ensuring that the active telescopic member 200 can perform bidirectional telescopic movement along a preset direction. This not only improves the flexibility and practicality of the bidirectional telescopic device but also further enhances its working efficiency and stability.

[0069] More specifically, in the initial state, the active telescopic member 200 is located directly above the base 100, and the two ends of the rack 440 are respectively engaged with the first worm gear mechanism and the second worm gear mechanism. When the drive motor 600 drives the main shaft 410 to rotate forward, in the initial stage, the first worm gear mechanism and the second worm gear mechanism simultaneously engage with the rack 440, pushing the active telescopic member 200 to move away from the second worm gear mechanism. As the active telescopic member 200 moves, the rack 440 gradually disengages from the second worm gear mechanism, but continues to maintain engagement with the first worm gear mechanism. At this time, the first worm gear mechanism continues to use its rotational engagement with the main shaft 410 to transmit power to the rack 440, pushing the active telescopic member 200 to continue moving away from the second worm gear mechanism until it reaches a set position and stops; when the active telescopic member 200 needs to move in the opposite direction, the drive motor 600 is started to rotate in the opposite direction, and the main shaft 410 will rotate in the opposite direction. At this time, the rack 440 remains engaged with the first worm gear mechanism. The first worm gear mechanism pushes the active telescopic member 200 in the opposite direction, moving it closer to the second worm gear mechanism. As the active telescopic member 200 moves in the opposite direction, it returns to its initial state. At this point, both the first and second worm gear mechanisms engage with the rack 440 again. Then, the rack 440 gradually disengages from the first worm gear mechanism while maintaining engagement with the second worm gear mechanism. Subsequently, the second worm gear mechanism transmits power to the rack 440 through rotational engagement with the main shaft 410. The movement of the rack 440 then drives the active telescopic member 200 to move away from the first worm gear mechanism. Therefore, by controlling the rotation direction of the drive motor 600, the bidirectional telescopic movement of the active telescopic member 200 can be achieved.

[0070] The first worm gear mechanism includes a first worm 421, a first linkage gear 423, and a first worm wheel 422 meshing with the first worm 421; the second worm gear mechanism includes a second worm 431, a second linkage gear 433, and a second worm wheel 432 meshing with the second worm 431. The first worm 421 and the second worm 431 are respectively mounted at both ends of the main shaft 410. The first worm wheel 422 and the second worm wheel 432 are respectively rotatably mounted at both ends of the base 100. The first linkage gear 423 is coaxially connected to the first worm wheel 422 and can rotate synchronously. The second linkage gear 433 is coaxially connected to the second worm wheel 432 and can rotate synchronously. The rack 440 can mesh with at least one of the first linkage gear 423 and the second linkage gear 433 at any given time. When the drive motor 600 drives the main shaft 410 to rotate, the first worm 421 and the second worm 431 will respectively drive the first worm wheel 422 and the second worm wheel 432 to rotate. Since the first worm gear 422 and the second worm gear 432 are coaxially connected to the first linkage gear 423 and the second linkage gear 433 respectively, they will rotate synchronously. When the rack 440 meshes with the first linkage gear 423 or the second linkage gear 433, the power of the worm gear mechanism will be transmitted to the rack 440 through the linkage gear, thereby driving the active telescopic member 200 to perform telescopic movement.

[0071] The main shaft 410 includes a left shaft 411, an intermediate shaft 412, and a right shaft 413. The left shaft 411 is connected to the left end of the intermediate shaft 412 via a left coupling 414, and the right shaft 413 is connected to the right end of the intermediate shaft 412 via a right coupling 415, ensuring the stability and flexibility of the main shaft 410. The first worm gear 421 is mounted on the left shaft 411, and the second worm gear 431 is mounted on the right shaft 413. They are responsible for driving the first worm gear mechanism and the second worm gear mechanism, respectively.

[0072] The linkage mechanism is responsible for driving the linkage telescopic member 300 to extend and retract synchronously along the movement direction of the active telescopic member 200. The linkage mechanism includes a first transmission belt 510 and a second transmission belt 520. As shown in Figure 11, one end of the first transmission belt 510 is fixed to the left side of the base 100, and after passing over the first pulley 550 installed at the right end of the active telescopic member 200, it connects to the left side of the linkage telescopic member 300. As shown in Figure 12, one end of the second transmission belt 520 is fixed to the right side of the base 100, and after passing over the second pulley 560 installed on the left side of the linkage telescopic member 300, it connects to the right side of the linkage telescopic member 300. As shown in Figure 13... When the active telescopic member 200 moves to the right, the first pulley 550 pushes the first transmission belt 510 to extend to the right, causing the first transmission belt 510 to drive the linked telescopic member 300 to move to the right synchronously. Simultaneously, as shown in Figure 14, the second transmission belt 520 is also dragged to the right by the linked telescopic member 300 and extends synchronously. As shown in Figure 16, when the active telescopic member 200 moves to the left, the second pulley 560 pushes the second transmission belt 520 to extend to the left, causing the second transmission belt 520 to drive the linked telescopic member 300 to move to the left synchronously. Simultaneously, as shown in Figure 15, the first transmission belt 510 is also dragged to the left by the linked telescopic member 300 and extends synchronously. Through this linkage mechanism, the linked telescopic member 300 can maintain the same direction of movement as the active telescopic member 200, achieving synchronous telescopic extension and retraction.

[0073] As shown in Figure 4, in order to ensure the stable operation of the transmission belt, the first transmission belt 510 and the second transmission belt 520 are connected to the linkage telescopic member 300 through the first pressure block 530 and the second pressure block 540, respectively. The first pressure block 530 and the second pressure block 540 are respectively provided with elongated holes, and the linkage telescopic member 300 is provided with corresponding screw holes. By adjusting the docking position of the elongated holes and the screw holes, the tension of the transmission belt can be adjusted. More specifically, the first transmission belt 510 is connected to the linkage telescopic member 300 via a first pressure block 530. The first pressure block 530 has a first elongated hole, and the linkage telescopic member 300 has a first screw hole. The tension of the first transmission belt 510 can be adjusted by the mating position of the first elongated hole and the first screw hole. The second transmission belt 520 is connected to the linkage telescopic member 300 via a second pressure block 540. The second pressure block 540 has a second elongated hole, and the linkage telescopic member 300 has a second screw hole. The tension of the second transmission belt 520 can be adjusted by the mating position of the second elongated hole and the second screw hole.

[0074] To achieve smoother and more efficient telescopic movement, the bidirectional telescopic device of the present invention incorporates tracks and grooves between the base 100 and the active telescopic member 200, and between the active telescopic member 200 and the linkage telescopic member 300. Furthermore, horizontal rollers and vertical rollers are installed on both sides of the track, rotating around horizontal and vertical axes respectively, and making close contact with the corresponding sides of the grooves. In particular, the axes of adjacent horizontal rollers are staggered vertically, effectively transforming potential sliding friction into rolling friction, greatly reducing the coefficient of friction, improving movement efficiency, and extending the device's service life. Detailed structural description is as follows: As shown in Figure 4, the base 100 has a first track, and the active telescopic member 200 has a first groove that mates with the first track. The first groove has an upper end face, a lower end face, and a side face for contacting the rollers. A row of first horizontal rollers 910 and a row of first vertical rollers 920 are installed on both sides of the first track. The first horizontal roller 910 rotates around a horizontal axis, with its upper and lower ends of its rolling surface contacting the upper and lower ends of the first groove, respectively. The first vertical roller 920 rotates around a vertical axis, with its rolling surface contacting the side of the first groove. Similarly, the active telescopic member 200 is provided with a second track, and the linkage telescopic member 300 is provided with a second groove that cooperates with the second track. On both sides of the second track, there is a row of second horizontal rollers 930 and a row of second vertical rollers 940, respectively. The second horizontal roller 930 rotates around a horizontal axis, with its upper and lower ends of its rolling surface contacting the upper and lower ends of the second groove, respectively. The second vertical roller 940 rotates around a vertical axis, with its rolling surface contacting the side of the second groove. As shown in Figure 5, the axes of the first horizontal rollers 910 are staggered in the vertical direction. The upper vertex of the first horizontal roller 910 positioned slightly above rolls in contact with the upper end face of the first groove, while the lower vertex of the first horizontal roller 910 positioned slightly below rolls in contact with the lower end face of the first groove. This transforms the sliding friction that might have existed between the first horizontal rollers 910 and the first groove into rolling friction. By employing a track and groove combination and staggering the axes of the horizontal rollers in the vertical direction, the bidirectional telescopic device of the present invention effectively converts sliding friction into rolling friction. This not only significantly reduces the coefficient of friction but also improves the movement efficiency and smoothness of the bidirectional telescopic device, while also helping to extend its service life.

[0075] The telescopic linkage 300 is equipped with loading levers 310 on one or both sides. These levers can move the test tube rack, facilitating the loading and unloading of test tubes. Of course, to meet the needs of specific application scenarios, other functional auxiliary devices can be added to the telescopic linkage 300. For example, the top surface of the telescopic linkage 300 can be configured as a support platform, making the telescopic linkage itself a carrier. In this way, analytical instruments or external grippers can directly place products on the support platform for movement. The telescopic linkage can also be equipped with mechanical grippers for grasping and placing sample carriers.

[0076] In this embodiment, as shown in FIG2, the base 100 is provided with a left light sensor 710, a right light sensor 720, and a middle light sensor 730. The left light sensor 710 and the right light sensor 720 are located at the left and right ends of the base 100, respectively, and the middle light sensor 730 is located between the left light sensor 710 and the right light sensor 720. The active telescopic member 200 is provided with a baffle 740, which can move with the active telescopic member 200 and, during the movement, blocks one or more of the left light sensor 710, the right light sensor 720, or the middle light sensor 730 as its position changes. Specifically, when the active telescopic member 200 is in the non-extended state, the baffle 740 will simultaneously block the light from the left light sensor 710, the right light sensor 720, and the middle light sensor 730. At this time, the control system can immediately identify and determine that the active telescopic member 200 is in the initial position. Once the baffle 740 leaves the sensing area of ​​the right light sensor 720, while the left light sensor 710 and the middle light sensor 730 remain blocked, the control system can immediately identify and determine that the active telescopic member 200 has begun to move to the left. As the active telescopic member 200 continues to move to the left, the baffle 740 will continue to leave the sensing area of ​​the middle light sensor 730. At this time, the baffle 740 only blocks the light from the left light sensor 710 on the left side of the base 100, and the control system will determine that the active telescopic member 200 has moved to the left side area; when the baffle 740 continues to leave the sensing area of ​​the left light sensor 710, the control system will determine that the active telescopic member 200 has moved to the leftmost extreme position. The reverse movement is as follows: When the active telescopic component 200 is in the non-extended state, the baffle 740 will simultaneously block the light from the left light sensor 710, the right light sensor 720, and the middle light sensor 730. At this time, the control system can immediately identify and determine that the active telescopic component 200 is in the initial position. When the baffle 740 leaves the sensing area of ​​the left light sensor 710 on the left side of the base 100, while the right light sensor 720 and the middle light sensor 730 are still blocked, the control system can immediately identify and determine that the active telescopic component 200 has started to move to the right. As the active telescopic member 200 continues to move to the right, the baffle 740 will continue to move away from the sensing area of ​​the middle light sensor 730 until the baffle 740 only blocks the light from the right light sensor 720. At this point, the control system will determine that the active telescopic member 200 has moved to the right side area. The active telescopic member 200 continues to move to the right until the baffle 740 continues to move away from the sensing area of ​​the right light sensor 720. At this point, the baffle 740 does not block any light sensor, and the control system will determine that the active telescopic member 200 has moved to the right limit position.

[0077] As shown in Figures 6-9, the bottom of the telescopic linkage 300 is provided with a first limiting boss 570 and a second limiting boss 580. The first limiting boss 570 cooperates with the first pulley 550 to limit the extreme position of the telescopic linkage 300 extending to one side, and the second limiting boss 580 cooperates with the second pulley 560 to limit the extreme position of the telescopic linkage 300 extending to the other side. The first limiting boss 570 and the second limiting boss 580 provide reliable limiting protection for the telescopic movement of the telescopic linkage 300, avoiding damage or safety hazards caused by excessive extension or retraction.

[0078] When the telescopic component 300 extends or retracts to its limit position, the light sensor installed on the base 100 can detect its position and transmit a signal in a timely manner for control or protection. At the same time, the length of the first transmission belt 510 and / or the second transmission belt 520 also plays an additional limiting role, providing limit protection together with the limiting boss.

[0079] As shown in Figure 8, the bidirectional telescopic device also includes a lifting mechanism 800, which includes a lifting motor 810, a lifting plate 820, and a base plate 830. The cylinder of the lifting motor 810 is fixed on the base plate 830, and the telescopic shaft of the lifting motor 810 is connected to the lifting plate 820. The base 100 is installed above the lifting plate 820. When the telescopic shaft of the lifting motor 810 extends or retracts, the entire bidirectional telescopic device can rise or fall accordingly, thereby achieving flexible height adjustment.

[0080] The bidirectional telescopic device also includes a rotating mechanism, which can drive the bidirectional telescopic device to rotate, increasing the flexibility and applicability of the bidirectional telescopic device.

[0081] The bidirectional telescopic device of this invention allows for the efficient movement of the test tube rack between the production line and analytical equipment. The specific workflow is as follows:

[0082] S1. Initial State: The bidirectional telescopic device is in the off-state. The active telescopic component 200 is located directly above the base 100, and the linkage telescopic component 300 is vertically opposite to the active telescopic component 200. The rack 440 is mounted on the active telescopic component 200 and meshes with the first worm gear mechanism and the second worm gear mechanism. The first transmission belt 510 and the second transmission belt 520 are respectively connected to the linkage telescopic component 300 through pressure blocks to maintain appropriate tension. The lifting mechanism 800 is in the initial low position.

[0083] S2. Clamping the test tube rack: Start the drive motor 600, the main shaft 410 rotates, and the active telescopic component 200 is pushed to move towards the production line side through the worm gear mechanism and rack 440. At the same time, the linkage mechanism drives the linkage telescopic component 300 to extend towards the production line side. When the linkage telescopic component 300 drives the loading lever 310 to reach the production line, the test tube rack to be tested will move along the production line between the two loading levers 310 and be clamped.

[0084] S3. Transporting the test tube rack: The drive motor 600 rotates in the opposite direction, pushing the active telescopic component 200 to move away from the production line through the worm gear mechanism and rack 440. At this time, the loading lever 310 clamps the test tube rack and moves it towards the analysis equipment. After reaching the designated position, the drive motor 600 stops working and the analysis equipment starts working.

[0085] S4. Test tube rack return operation: After the inspection is completed, the test tube rack needs to be returned to the production line. At this time, the drive motor 600 is restarted, the main shaft 410 rotates, and the active telescopic component 200 is pushed to move to one side of the production line through the worm gear mechanism and rack 440. At the same time, the linkage mechanism drives the linkage telescopic component 300 to extend and retract synchronously. The loading lever 310 clamps the test tube rack and moves it to one side of the production line until it is transported back to the production line. After the drive motor 600 stops working, the test tube rack will be transported to the next inspection station along the production line. When the next set of test tube racks to be inspected on the production line moves to the loading lever 310 and is clamped, the steps S3 to S4 are repeated.

[0086] The bidirectional telescopic device of this invention ensures smooth and accurate transport of test tube racks between the production line and analytical equipment. Furthermore, it should be noted that the bidirectional telescopic device of this invention not only supports the traditional upright mounting method (i.e., installation and use in the conventional direction), but can also be installed upside down or side-mounted according to actual application scenarios and needs. Regardless of the installation method, the bidirectional telescopic device of this invention can operate stably.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bidirectional telescopic device, characterized in that, The device includes a base (100), an active telescopic member (200), a linked telescopic member (300), a transmission mechanism, a linkage mechanism, and a reversible drive motor (600). The base (100), the active telescopic member (200), and the linked telescopic member (300) are arranged sequentially from bottom to top. The transmission mechanism is located between the base (100) and the active telescopic member (200). The drive motor (600) drives the active telescopic member (200) to perform bidirectional telescopic movement along the length direction through the transmission mechanism. The linkage mechanism can drive the linked telescopic member (300) to simultaneously telescopically move along the movement direction of the active telescopic member (200).

2. The bidirectional telescopic device according to claim 1, characterized in that, The transmission mechanism includes a main shaft (410), a first worm gear mechanism, a second worm gear mechanism, and a rack (440). The main shaft (410) is rotatably mounted on the base (100) and driven to rotate by the drive motor (600). The rack (440) is mounted on the active telescopic member (200) and its sliding direction is consistent with that of the active telescopic member (200). The first worm gear mechanism and the second worm gear mechanism are respectively disposed at both ends of the main shaft (410), and the rack (440) maintains a transmission relationship with at least one of the first worm gear mechanism and the second worm gear mechanism.

3. The bidirectional telescopic device according to claim 2, characterized in that, The first worm gear mechanism includes a first worm (421), a first linkage gear (423), and a first worm wheel (422) meshing with the first worm (421). The second worm gear mechanism includes a second worm (431), a second linkage gear (433), and a second worm wheel (432) meshing with the second worm (431). The first worm (421) and the second worm (431) are respectively mounted at both ends of the main shaft (410). The first worm wheel (422) and the second worm wheel (432) are respectively rotatably mounted at both ends of the base (100). The first linkage gear (423) is coaxially connected to the first worm wheel (422) and can rotate synchronously. The second linkage gear (433) is coaxially connected to the second worm wheel (432) and can rotate synchronously. The rack (440) can mesh with at least one of the first linkage gear (423) and the second linkage gear (433).

4. The bidirectional telescopic device according to claim 3, characterized in that, The main shaft (410) includes a left shaft (411), an intermediate shaft (412), and a right shaft (413). The left shaft (411) is connected to the left end of the intermediate shaft (412) via a left coupling (414), and the right shaft (413) is connected to the right end of the intermediate shaft (412) via a right coupling (415). The first worm gear (421) is mounted on the left shaft (411), and the second worm gear (431) is mounted on the right shaft (413).

5. The bidirectional telescopic device according to any one of claims 1-4, characterized in that, The linkage mechanism includes a first transmission belt (510) and a second transmission belt (520). One end of the first transmission belt (510) is fixed to one side of the base (100), and the other end of the first transmission belt (510) passes around the first pulley (550) installed on the active telescopic member (200) and is connected to the end of the linkage telescopic member (300) away from the first pulley (550). One end of the second transmission belt (520) is fixed to the other side of the base (100), and the other end of the second transmission belt (520) passes around the second pulley (560) installed on the linkage telescopic member (300) and is connected to the end of the linkage telescopic member (300) away from the second pulley (560).

6. The bidirectional telescopic device according to claim 5, characterized in that, The first transmission belt (510) and the second transmission belt (520) are connected to the linkage telescopic member (300) through the first pressure block (530) and the second pressure block (540) respectively. The first pressure block (530) and the second pressure block (540) are respectively provided with elongated holes, and the linkage telescopic member (300) is provided with corresponding screw holes. The tension of the transmission belt can be adjusted by adjusting the docking position of the elongated holes and the screw holes.

7. The bidirectional telescopic device according to claim 5, characterized in that, The base (100) and the active telescopic member (200) are provided with a track and a groove for cooperation, as are the active telescopic member (200) and the linkage telescopic member (300). A row of horizontal rollers and a row of vertical rollers are installed on both sides of the track. The horizontal rollers and the vertical rollers rotate around the horizontal axis and the vertical axis respectively, and contact the corresponding side of the groove respectively.

8. The bidirectional telescopic device according to claim 7, characterized in that, The horizontal rollers in the same row are staggered in the vertical direction.

9. The bidirectional telescopic device according to claim 1, characterized in that, The linkage telescopic component (300) is equipped with a loading lever (310), a mechanical gripper, or a support platform.

10. The bidirectional telescopic device according to claim 1, characterized in that, One or more light sensors are provided at each end of the base (100). The active telescopic member (200) is provided with a baffle (740) that cooperates with the light sensor. The baffle (740) can move with the active telescopic member (200) and selectively block one or more of the light sensors during the movement.

11. The bidirectional telescopic device according to claim 1, characterized in that, It also includes a lifting mechanism, which includes a lifting motor (810), a lifting plate (820), and a base plate (830). The cylinder of the lifting motor (810) is fixed on the base plate (830). The telescopic shaft of the lifting motor (810) is connected to the lifting plate (820). The base (100) is installed above the lifting plate (820). The telescopic shaft of the lifting motor (810) can extend and retract to drive the bidirectional telescopic device to rise and fall.

12. The bidirectional telescopic device according to claim 1 or 11, characterized in that, It also includes a rotating mechanism that can drive the bidirectional telescopic device to rotate.

13. The bidirectional telescopic device according to claim 5, characterized in that, The bottom of the telescopic link is provided with a first limiting boss (570) and a second limiting boss (580). The first limiting boss (570) cooperates with the first pulley (550) to limit the extreme position of the telescopic link extending to one side. The second limiting boss (580) cooperates with the second pulley (560) to limit the extreme position of the telescopic link extending to the other side.

14. A method of operating the bidirectional telescopic device as described in any one of claims 1-13, characterized in that, The method is as follows: When the drive motor (600) starts and drives the main shaft (410) to rotate in the forward direction, the first worm gear mechanism and the second worm gear mechanism together push the active telescopic member (200) to move away from the second worm gear mechanism; the rack (440) will gradually disengage from the second worm gear mechanism and only maintain engagement with the first worm gear mechanism. The first worm gear mechanism will continue to transmit power to the rack (440) through its rotational engagement with the main shaft (410), thereby pushing the active telescopic member (200) to continue moving until it reaches the set position and stops. During the movement of the active telescopic member (200), the first pulley (550) of the linkage mechanism will push the first transmission belt (510) to extend away from the second worm gear mechanism, thereby causing the first transmission belt (510) to drive the linkage telescopic member (300) to move away from the second worm gear mechanism in a synchronous manner. When the active telescopic component (200) needs to move in the reverse direction, the drive motor (600) drives the main shaft (410) to rotate in the reverse direction. The rack (440) remains engaged with the first worm gear mechanism, which pushes the active telescopic component (200) in the reverse direction toward the second worm gear mechanism. As the active telescopic component (200) moves in the reverse direction and gradually returns to its initial state, the first and second worm gear mechanisms engage with the rack (440) again. The rack (440) gradually disengages from the first worm gear mechanism but remains engaged with the second worm gear mechanism. The second worm gear mechanism transmits power to the rack (440) through rotational engagement with the main shaft (410). The movement of the rack (440) drives the active telescopic component (200) to move away from the first worm gear mechanism. During the reverse movement of the active telescopic component (200), the second pulley (560) of the linkage mechanism pushes the second transmission belt (520) to extend away from the first worm gear mechanism, thereby causing the second transmission belt (520) to drive the linkage telescopic component (300) to move synchronously away from the first worm gear mechanism until it reaches the set position and stops.

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