Bidirectional telescopic device

Abstract

The utility model belongs to the technical field of transmission devices, and relates to a bidirectional telescopic device which comprises a base, a driving telescopic piece, a linkage telescopic piece, a transmission mechanism, a linkage mechanism and a driving motor capable of rotating forwards and backwards. The transmission mechanism is arranged between the base and the driving telescopic part, the driving motor drives the driving telescopic part to do bidirectional telescopic movement in the length direction through the transmission mechanism, and the linkage mechanism can drive the linkage telescopic part to stretch out and draw back in the movement direction of the driving telescopic part at the same time. According to the two-way telescopic device, two-way and coordinated telescopic movement of the whole two-way telescopic device can be achieved through one driving motor, the linkage telescopic piece can move synchronously with the driving telescopic piece through the linkage mechanism, the structure of the device is simplified, manufacturing cost is reduced, and efficiency and precision of telescopic movement are improved.

Description

Technical Field

[0001] The utility model relates to a bidirectional telescopic device, belonging to the technical field of transmission devices. Background Art

[0002] In intelligent pipeline analysis systems, sample flow and analysis are key links in laboratory automation processes. Traditional pipeline analysis systems primarily rely on a single-tube method as the basic unit of sample flow. Specifically, the sample is placed in a test tube, which is then mounted on a test tube holder. When the test tube holder carrying the test tube flows to the branch track where the analysis equipment is located, the sample can be drawn into the corresponding analysis equipment to complete a series of experimental steps and analysis projects. While this method achieves a certain degree of automation, its efficiency is limited when processing large numbers of samples.

[0003] In order to improve the circulation efficiency and adapt to different types of analytical equipment, analytical equipment with test tube racks as circulation units has appeared on the market. The test tube rack can carry multiple test tubes at the same time and can be reused, thereby reducing the additional demand for test tube racks in the system. This circulation method has shown obvious advantages in improving sample processing efficiency. In order to connect different types of analytical equipment to the pipeline analysis system, the existing technology also provides a sample transfer system. After the system combines single tubes into a test tube rack, it usually requires the test tube rack to be transported from a specific channel to the analytical equipment; and after the test is completed, the test tube rack needs to be returned from a specific channel to the test tube rack carrying device. However, although this setting realizes the circulation of samples to a certain extent, it strictly limits the input or output order of the test tube rack, making the scheduling of the test tube rack lack of flexibility, which in turn affects the overall analysis efficiency of the pipeline analysis system.

[0004] Furthermore, traditional sample rack transfer devices are often bulky, occupying significant laboratory space and complex in structure, with limited functionality. This not only complicates laboratory layout but also increases equipment costs. In today's increasingly space-constrained modern laboratory environment, miniaturization and integration of equipment are becoming increasingly important.

[0005] Therefore, a bidirectional telescopic device with a small size and compact structure is needed to flexibly arrange the test tube rack, improve analysis efficiency, and meet the transmission requirements of the sample rack.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present invention concept, and therefore, it may contain information that does not constitute prior art. Utility Model Content

[0007] The purpose of the present 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 the utility model is as follows: a bidirectional telescopic device, comprising a base, an active telescopic part, a linked telescopic part, a transmission mechanism, a linkage mechanism and a reversible drive motor, wherein the base, the active telescopic part and the linked telescopic part are arranged in sequence from bottom to top, the transmission mechanism is arranged between the base and the active telescopic part, the drive motor drives the active telescopic part to perform bidirectional telescopic movement along the length direction through the transmission mechanism, and the linkage mechanism can drive the linked telescopic part to simultaneously extend and retract along the movement direction of the active telescopic part.

[0009] Compared with the prior art, the technical solution provided by this utility model has the following advantages: The utility model can achieve bidirectional, coordinated telescopic motion of the entire bidirectional telescopic device through a single drive motor, which not only simplifies the device structure and reduces manufacturing costs, but also improves the efficiency and precision of the telescopic motion. Furthermore, due to the use of a linkage mechanism, the linked telescopic member can move synchronously with the active telescopic member, further enhancing the practicality and stability of the bidirectional telescopic device.

[0010] On the basis of the above technical solution, the present invention can also be 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 mounted on the base in a rotatable manner and is driven to rotate by the drive motor; the rack is mounted on the active telescopic part and is consistent with the sliding direction of the active telescopic part; the first worm gear mechanism and the second worm gear mechanism are respectively arranged 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 scheme 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, and the rack will maintain a transmission relationship with at least one of the two worm gear mechanisms during movement, so that the active telescopic member can be telescoped along the length direction of the rack, and its maximum extension length is almost equal to the full length of the rack, plus the extension length of the linkage telescopic member, and when the bidirectional telescopic device is extended to the unilateral limit position, its unidirectional total extension length can reach the sum of the active telescopic member, the linkage telescopic member and the base length minus the length of the overlapping portion designed for increasing support between the active telescopic member and the linkage telescopic member, and between the active telescopic member and the base. In addition, the drive motor equipped with the bidirectional telescopic device can drive the main shaft to rotate forward and backward, thereby ensuring that the active telescopic member can perform bidirectional telescopic motion. Therefore, when extending in both directions, the total movement length of the active telescopic member and the linkage telescopic member is twice that of the unidirectional movement, but the base length remains unchanged. Therefore, the calculation of the bidirectional total movement length requires doubling the length of the active telescopic member and the linkage telescopic member, and then adding the base length. Therefore, when the bidirectional telescopic device is extended to the extreme positions in two opposite directions, its total bidirectional movement length can reach the sum of twice the length of the active telescopic part, twice the length of the linked telescopic part and the length of the base, minus the length of the overlapping parts between the active telescopic part and the linked telescopic part, and between the active telescopic part and the base designed for increased support. Therefore, by designing a smaller overlapping part 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 two ends of the main shaft; the first worm wheel and the second worm wheel are respectively rotatably mounted at two 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 effect of adopting the above-mentioned further scheme is that by respectively installing the first worm gear mechanism and the second worm gear mechanism at the two ends of the main shaft and the base, a two-way telescopic function is realized. The coaxial connection between the first linkage gear and the second linkage gear and the worm wheel ensures the synchronous transmission of power and the smooth progress of the telescopic movement. The meshing of the rack and the linkage gear enables the telescopic device to accurately control the length of extension or contraction, thereby improving the accuracy and reliability of the telescopic device. The utility model has a compact structure as a whole, a reasonable design, can effectively realize the two-way telescopic function, and has high stability and durability.

[0015] Furthermore, the main shaft includes a left shaft body, an intermediate shaft body and a right shaft body, the left shaft body is connected to the left end of the intermediate shaft body through a left coupling, the right shaft body is connected to the right end of the intermediate shaft body through a right coupling, the first worm is installed on the left shaft body, and the second worm is installed on the right shaft body.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the split main shaft design makes it easier to install, debug and maintain each part, greatly improving the flexibility and maintainability of the transmission mechanism. The left shaft and the right shaft are connected to the intermediate shaft through a coupling, ensuring smooth transmission of power and reducing transmission losses caused by loose or wear of components, thereby improving transmission efficiency. The split main shaft design enables 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 is connected to the left side of the linkage telescopic member after passing around a first pulley installed at the right end of the active telescopic member; one end of the second transmission belt is fixed to the right side of the base, and is connected to the right side of the linkage telescopic member after passing around a second pulley installed on the left side of the linkage telescopic member.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that, through the first transmission belt and the second transmission belt, that is, the dual transmission belt scheme, not only can the linked telescopic part be able to perform telescopic movement synchronously with the telescopic movement of the active telescopic part, effectively avoiding the telescopic inconsistency problem caused by transmission error, thereby improving the coordination of the entire two-way telescopic device, but also, through the joint action of the two transmission belts, the stability of the transmission mechanism is significantly enhanced, and even when subjected to large loads or encountering external impacts, it can maintain smooth telescopic movement, thereby enhancing the stability of the overall structure.

[0019] Furthermore, the first transmission belt and the second transmission belt are connected to the linked telescopic part through the first pressure block and the second pressure block respectively. The first pressure block and the second pressure block are respectively provided with long holes, and the linked telescopic part is provided with corresponding screw holes. By adjusting the docking position of the long holes and the screw holes, the tightness of the transmission belt can be adjusted.

[0020] The beneficial effect of adopting the above further solution is that, through the design of the elongated holes on the first pressing block and the second pressing block, the tightness of the transmission belt can be easily adjusted, thereby ensuring the stability and reliability of the transmission system.

[0021] Furthermore, tracks and slide grooves are arranged between the base and the active telescopic part, and between the active telescopic part and the linked telescopic part. 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 sides of the slide groove.

[0022] The beneficial effect of adopting the above further solution is that it reduces the friction coefficient, converts sliding friction into rolling friction, improves the movement efficiency and smoothness of the two-way telescopic device, and extends the service life of the device.

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

[0024] The beneficial effect of adopting the above-mentioned further scheme is that the effect of rolling friction is further optimized, so that the sliding friction that may exist between the slide groove and the horizontal roller is converted into rolling friction, which not only significantly reduces the friction coefficient, but also improves the movement efficiency and smoothness of the two-way telescopic device, and also helps to extend its service life.

[0025] Furthermore, the linked telescopic member is provided with a loading lever, a mechanical gripper or a supporting platform.

[0026] The beneficial effect of adopting the above-mentioned further scheme is that the lever can push the sample carrier and other devices to move, thereby facilitating the loading and unloading of the sample carrier. The loading lever can also be provided with a sensor for sensing objects, and the linked telescopic part can also be equipped with a mechanical gripper for grabbing and placing the sample carrier. The top surface of the linked telescopic part can also be provided with one or more sample support platforms, so that the linked telescopic part itself becomes a carrier. In this way, the analytical instrument or the 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 that cooperates with the light sensor is provided on the active telescopic part. The baffle can move with the active telescopic part and selectively block one or more light sensors during the movement.

[0028] The beneficial effect of adopting the above-mentioned further scheme is that when the active telescopic part moves, if the baffle blocks the left light sensor, it indicates that the active telescopic part has moved to the left area of ​​the base; if the baffle blocks the right light sensor, it indicates that the active telescopic part has moved to the right area of ​​the base; through the light sensor, the bidirectional telescopic device of the utility model realizes the accurate detection and judgment of the moving direction of the active telescopic part, and provides reliable position feedback information for subsequent automatic control, thereby improving the intelligence level and operation 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 drive the bidirectional telescopic device to rise and fall.

[0030] The beneficial effect of adopting the above further solution is that, through the lifting mechanism, the flexible lifting and lowering of the entire device is achieved, which greatly enhances its ability to adapt to different working height requirements.

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

[0032] The beneficial effect of adopting the above further solution is that the flexibility and scope of application of the two-way telescopic device are increased.

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

[0034] The beneficial effect of adopting this further solution is that the first and second limiting bosses provide reliable limiting for the telescopic movement of the linked telescopic member, preventing damage or safety hazards caused by excessive extension. When the linked telescopic member reaches its extreme position, a light sensor mounted on the base can keenly sense its position and promptly transmit a signal for intelligent control or protection. Furthermore, the length of the transmission belt also provides an additional limiting effect, forming a comprehensive safety protection mechanism together with the limiting bosses.

[0035] A working method of a bidirectional telescopic device, the method is as follows:

[0036] In the initial stage, the first worm gear mechanism and the second worm gear mechanism of the transmission mechanism will be engaged with the rack at the same time; when the drive motor is started and drives the main shaft to rotate in the forward direction, the first worm gear mechanism and the second worm gear mechanism jointly push the active telescopic member to move in the direction away from the second worm gear mechanism; the rack will gradually disengage from the second worm gear mechanism and only remain in a state of engagement with the first worm gear mechanism. The first worm gear mechanism will continue to transmit power to the rack through its rotational engagement with the main shaft, thereby pushing the active telescopic member to continue moving until it reaches the set position and stops;

[0037] During the movement of the active telescopic member, the first pulley of the linkage mechanism pushes the first transmission belt to extend in a direction away from the second worm gear mechanism, so that the first transmission belt drives the linkage telescopic member to move synchronously in a direction away from the second worm gear mechanism;

[0038] When the active telescopic member needs to move in the opposite direction, the driving motor drives the main shaft to rotate in the opposite direction, and the rack is still in a coordinated state with the first worm gear mechanism. The first worm gear mechanism will push the active telescopic member in the opposite direction to move in the direction close to the second worm gear mechanism; as the active telescopic member moves in the opposite direction and gradually returns to the initial state, the first worm gear mechanism and the second worm gear mechanism cooperate with the rack at the same time, and the rack will gradually disengage from the first worm gear mechanism and maintain a coordinated state with the second worm gear mechanism; the second worm gear mechanism transmits power to the rack through the rotational coordination with the main shaft, and the movement of the rack drives the active telescopic member to move in the direction away from the first worm gear mechanism;

[0039] During the reverse movement of the active telescopic part, the second pulley of the linkage mechanism will push the second transmission belt to extend away from the first worm gear mechanism, so that the second transmission belt drives the linkage telescopic part to move synchronously away from the first worm gear mechanism until it reaches the set position and stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0041] Figure 1 This is a schematic diagram of the three-dimensional structure of the bidirectional telescopic device of the present utility model;

[0042] Figure 2 This is a schematic diagram of the three-dimensional structure of the two-way telescopic device of the utility model from a rear view angle;

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

[0044] Figure 4 This is a schematic diagram of the three-dimensional structure of the bidirectional telescopic device of the utility model extending to the left;

[0045] Figure 5 This is a front view of the bidirectional telescopic device of the utility model extended to the right;

[0046] Figure 6 For the utility model Figure 5 A schematic diagram of the enlarged structure at point A;

[0047] Figure 7 For the utility model Figure 5 A top view of

[0048] Figure 8 This is a front view of the bidirectional telescopic device of the utility model extended to the left;

[0049] Figure 9 For the utility model Figure 8 A schematic diagram of the enlarged structure at point B;

[0050] Figure 10 For the utility model Figure 8 A top view of

[0051] Figure 11 This is a simplified structural diagram of the installation of the first transmission belt, the base, the active telescopic member and the linked telescopic member of the utility model;

[0052] Figure 12 A simplified structural diagram of the installation of the second transmission belt, the base, the active telescopic member and the linked telescopic member of the present invention;

[0053] Figure 13 This is a schematic diagram of the extension structure of the first transmission belt when the active telescopic member of the utility model extends to the right;

[0054] Figure 14 This is a schematic diagram of the extension structure of the second transmission belt when the active telescopic member of the utility model extends to the right;

[0055] Figure 15 This is a schematic diagram of the extension structure of the first transmission belt when the active telescopic member of the utility model extends to the left;

[0056] Figure 16 This is a schematic diagram of the extension structure of the second transmission belt when the active telescopic member of the utility model extends to the left;

[0057] In the figure, 100, base; 200, active telescopic member; 300, linked telescopic member; 310, loading lever;

[0058] 410, main shaft; 411, left shaft; 412, intermediate shaft; 413, right shaft; 414, left coupling; 415, right coupling; 421, first worm; 422, first worm wheel; 423, first linkage gear; 431, second worm; 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 plate; 830, base plate;

[0063] 910, first horizontal roller; 920, first vertical roller; 930, second horizontal roller; 940, second vertical roller. DETAILED DESCRIPTION

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

[0065] When interpreting the description of this application, it is important to clarify that the directions or positional relationships indicated by terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," and "counterclockwise" are based on the perspectives and layouts shown in the accompanying drawings and are intended to facilitate explanation and simplify the description process. They are not intended to be absolute limitations on the actual directions, constructions, and operating modes of the devices or components described. Therefore, these terms should not be construed as restrictive 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 used to limit the scope of the present invention.

[0067] like Figure 1 - Figure 10 As shown, 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 reversible drive motor 600. The base 100, the active telescopic member 200 and the linked telescopic member 300 are arranged in sequence from bottom to top, and the transmission mechanism is arranged 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 telescope along the movement direction of the active telescopic member 200.

[0068] More specifically, if Figure 3 As shown, 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 embodiment of the utility model does not limit the transmission connection method between the drive motor 600 and the main shaft 410. The drive motor 600 and the main shaft 410 can transmit power through a chain drive, a belt drive or a gear drive. The rack 440 is mounted on the active telescopic member 200 and is consistent with the sliding direction of the active telescopic member 200. The first worm gear mechanism and the second worm gear mechanism are respectively arranged at both ends of the main shaft 410, and through the forward and reverse rotation cooperation with the main shaft 410, the power is transmitted to the rack 440, and then the movement of the rack 440 drives the active telescopic member 200 to achieve bidirectional telescopic motion. When the drive motor 600 is started and the main shaft 410 is driven to rotate, the first worm gear mechanism and the second worm gear mechanism will operate synchronously, and the rack 440 will maintain a transmission relationship with at least one of the two worm gear mechanisms during the movement, so that the active telescopic member 200 can be telescoped along the length direction of the rack 440, plus the extension length of the linkage telescopic member 300, the bidirectional telescopic device, when extended to the unilateral limit position, has a unidirectional total extension length 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 between the active telescopic member 200 and the linkage telescopic member 300, and between the active telescopic member 200 and the base 100 designed for increased support, Therefore, by designing a smaller overlap size, the telescopic range of the bidirectional telescopic device can be effectively expanded. In addition, the drive motor 600 can drive the forward and reverse rotation of the main shaft 410, ensuring that the active telescopic member 200 can perform bidirectional telescopic motion along the preset direction, not only improving the flexibility and practicality of the bidirectional telescopic device, but also further improving 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 in the forward direction, 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 in a direction 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 a mating state with the first worm gear mechanism. At this time, the first worm gear mechanism continues to utilize its rotational coordination with the main shaft 410 to transmit power to the rack 440, pushing the active telescopic member 200 to continue moving in a direction away from the second worm gear mechanism until it reaches the set position and stops; when the active telescopic member 200 needs to move in the reverse direction, the drive motor 600 is started to rotate in the reverse direction, and the main shaft 410 rotates in the reverse direction. At this time, the rack 440 and the first worm gear mechanism still maintain a matched state, and the first worm gear mechanism will push the active telescopic member 200 in the opposite direction to move closer to the second worm gear mechanism. As the active telescopic member 200 moves in the opposite direction, the active telescopic member 200 returns to its initial state. At this time, the first worm gear mechanism and the second worm gear mechanism are matched with the rack 440 at the same time. Then, the rack 440 gradually disengages from the first worm gear mechanism and maintains a matched state with the second worm gear mechanism. Subsequently, the second worm gear mechanism transmits power to the rack 440 by rotating with the main shaft 410. At this time, the movement of the rack 440 will drive the active telescopic member 200 to move in the direction away from the first worm gear mechanism. Therefore, by controlling the rotation direction of the drive motor 600, the bidirectional telescopic motion 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 opposite ends of the main shaft 410. The first worm wheel 422 and the second worm wheel 432 are respectively rotatably mounted at opposite ends of the base 100. The first linkage gear 423 is coaxially connected to the first worm wheel 422 and can rotate synchronously with it. The second linkage gear 433 is coaxially connected to the second worm wheel 432 and can rotate synchronously with it. The rack 440 can simultaneously mesh with at least one of the first linkage gear 423 and the second linkage gear 433. When the drive motor 600 drives the main shaft 410 to rotate, the first worm 421 and the second worm 431 drive the first worm wheel 422 and the second worm wheel 432 to rotate, respectively. 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 rotate synchronously. When the rack 440 is engaged with the first linkage gear 423 or the second linkage gear 433, the power of the worm gear mechanism is transmitted to the rack 440 through the linkage gears, thereby driving the active telescopic member 200 to perform telescopic motion.

[0071] The main shaft 410 includes a left shaft body 411, an intermediate shaft body 412 and a right shaft body 413. The left shaft body 411 is connected to the left end of the intermediate shaft body 412 through a left coupling 414, and the right shaft body 413 is connected to the right end of the intermediate shaft body 412 through a right coupling 415, ensuring the stability and flexibility of the main shaft 410. The first worm 421 is installed on the left shaft body 411, and the second worm 431 is installed on the right shaft body 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 synchronously extend and retract 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. Figure 11 As shown, one end of the first transmission belt 510 is fixed to the left side of the base 100, and is connected to the left side of the linkage telescopic member 300 after passing around the first pulley 550 installed at the right end of the active telescopic member 200; Figure 12 As shown, one end of the second transmission belt 520 is fixed to the right side of the base 100, passes around the second pulley 560 installed on the left side of the linkage telescopic member 300, and is connected to the right side of the linkage telescopic member 300; Figure 13As shown, 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, so that the first transmission belt 510 drives the linkage telescopic member 300 to move to the right synchronously. Figure 14 As shown, the second transmission belt 520 is dragged by the linkage telescopic member 300 and also extends to the right synchronously; Figure 16 As shown, 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, so that the second transmission belt 520 drives the linkage telescopic member 300 to move to the left synchronously. Figure 15 As shown, the first transmission belt 510 also stretches to the left synchronously under being dragged by the linked telescopic member 300. Through the linkage mechanism, the linked telescopic member 300 can maintain the same motion direction as the active telescopic member 200, and achieve synchronous telescoping.

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

[0074] In order to achieve smoother and more efficient telescopic movement, the bidirectional telescopic device of the present invention is provided with a track and a slide groove between the base 100 and the active telescopic part 200, and between the active telescopic part 200 and the linked telescopic part 300. Furthermore, horizontal rollers and vertical rollers are installed on both sides of the track, and the horizontal rollers and vertical rollers rotate around the horizontal axis and the vertical axis respectively, and are in close contact with the corresponding sides of the slide groove. In particular, the axes of adjacent horizontal rollers are staggered up and down, which can effectively convert the sliding friction that may have existed into rolling friction, greatly reducing the friction coefficient, improving the movement efficiency, and also extending the service life of the device. The detailed structural description is as follows: Figure 4As shown, the base 100 is provided with a first track, and the active telescopic member 200 is provided with a first slide groove cooperating with the first track. The first slide groove has an upper end face, a lower end face and a side face for contacting with the roller. On both sides of the first track, a row of first horizontal rollers 910 and a row of first vertical rollers 920 are respectively installed. Among them, the first horizontal roller 910 rotates around the horizontal axis, and the upper and lower ends of its rolling surface are in contact with the upper end surface and the lower end surface of the first slide respectively; and the first vertical roller 920 rotates around the vertical axis, and the rolling surface of the first vertical roller 920 is in contact with the side surface of the first slide; similarly, the active telescopic member 200 is provided with a second track, and the linked telescopic member 300 is provided with a second slide that cooperates with the second track, and a row of second horizontal rollers 930 and a row of second vertical rollers 940 are respectively provided on both sides of the second track, and the second horizontal roller 930 rotates around the horizontal axis, and the upper and lower ends of its rolling surface are in contact with the upper end surface and the lower end surface of the second slide respectively; the second vertical roller 940 rotates around the vertical axis, and its rolling surface is in contact with the side surface of the second slide. Figure 5 As shown, the axes of the first horizontal rollers 910 are staggered in the vertical direction. The upper apex of the first horizontal roller 910, which is positioned slightly upward, rolls in contact with the upper end surface of the first chute, while the lower apex of the first horizontal roller 910, which is positioned slightly downward, rolls in contact with the lower end surface of the first chute. This converts the sliding friction that might otherwise exist between the first horizontal roller 910 and the first chute into rolling friction. By employing a coordinated approach of rails and chute, 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, significantly reducing the friction coefficient and improving the movement efficiency and smoothness of the bidirectional telescopic device, while also helping to extend its service life.

[0075] The linkage telescopic member 300 is provided with a loading lever 310 on one or both sides, which can push the test tube rack to move, thereby facilitating the loading and unloading of test tubes. Of course, in order to meet the needs of specific application scenarios, other functional auxiliary devices can be added to the linkage telescopic member 300. For example, the top surface of the linkage telescopic member 300 can be set as a support platform, so that the linkage telescopic member itself becomes a carrier. In this way, the analytical instrument or external gripper can directly place the product on the support platform for movement. The linkage telescopic member can also be equipped with a mechanical gripper for grabbing and placing the sample carrier.

[0076] In this embodiment, if Figure 2As shown, 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 respectively located at the left end and the right end of the base 100, 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. The baffle 740 can move with the active telescopic member 200 and block one or more of the left light sensor 710, the right light sensor 720, or the middle light sensor 730 as its position changes during movement. Specifically, when the active telescopic member 200 is in an unextended 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 are still blocked, the control system can immediately recognize 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 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 left area. The movement in the opposite direction is as follows: when the active telescopic part 200 is in the unextended state, the baffle 740 will simultaneously block the light of the left light sensor 710, the right light sensor 720 and the middle light sensor 730. At this time, the control system can immediately recognize and judge that the active telescopic part 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, and the right light sensor 720 and the middle light sensor 730 are still blocked, the control system can immediately recognize and judge that the active telescopic part 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 leave the sensing area of ​​the middle light sensor 730 until the baffle 740 only blocks the light of the right light sensor 720. The control system will determine that the active telescopic member 200 has moved to the right area. The active telescopic member 200 continues to move to the right until the baffle 740 continues to leave the sensing area of ​​the right light sensor 720. At this time, 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 extreme position.

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

[0078] When the linkage telescopic member 300 reaches its limit, the optical sensor on the base 100 senses its position and transmits a signal in a timely manner for control or protection. Simultaneously, the length of the first transmission belt 510 and / or the second transmission belt 520 also acts as an additional limiter, working together with the limit boss to provide a limit guarantee.

[0079] like Figure 8 As shown, the bidirectional telescopic device also includes a lifting mechanism 800, and the lifting mechanism 800 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 is extended or retracted, the entire bidirectional telescopic device can be lifted or lowered accordingly, thereby realizing flexible adjustment of the height.

[0080] The bidirectional telescopic device further comprises a rotating mechanism, which can drive the bidirectional telescopic device to rotate, thereby increasing the flexibility and scope of application of the bidirectional telescopic device.

[0081] By using the bidirectional telescopic device of the present invention to transport the test tube rack, the test tube rack can be efficiently moved between the production line and the analysis equipment. The specific work flow is as follows:

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

[0083] S2. Clamping the test tube rack: The drive motor 600 is activated, rotating the main shaft 410. The worm gear mechanism and rack 440 propel the active telescopic member 200 toward the assembly line. Simultaneously, the linkage mechanism drives the telescopic member 300 to extend toward the assembly line. When the telescopic member 300 drives the loading lever 310 to reach the assembly line, the test tube rack to be tested moves along the assembly line between the two loading levers 310 and is clamped.

[0084] S3. Transporting the test tube rack: The drive motor 600 rotates in the opposite direction, pushing the active telescopic member 200 to move away from the assembly line through the worm gear mechanism and the rack 440. At this time, the loading lever 310 clamps the test tube rack and moves it toward 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 test is completed, the test tube rack needs to be returned to the assembly line. At this time, the drive motor 600 is restarted, and the main shaft 410 rotates. The worm gear mechanism and the rack 440 push the active telescopic member 200 toward the side of the assembly line. At the same time, the linkage mechanism drives the linkage telescopic member 300 to synchronously extend and retract. The loading lever 310 clamps the test tube rack and moves it toward the side of the assembly line until it is transported back to the assembly line. After the drive motor 600 stops working, the test tube rack is transported along the assembly line to the next inspection station. When the next group of test tube racks to be inspected on the assembly line moves to the loading lever 310 and is clamped, steps S3 to S4 are repeated.

[0086] The bidirectional telescopic device of this utility model ensures smooth and accurate transportation of test tube racks between the production line and analytical equipment. Furthermore, it should be noted that the bidirectional telescopic device of this utility model not only supports traditional upright installation (i.e., installation and use in the conventional direction), but also supports inverted installation or side installation according to actual application scenarios and needs. Regardless of the installation method, the bidirectional telescopic device of this utility model 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 replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A two-way telescopic device, characterized in that: The invention comprises a base (100), an active telescopic member (200), a linked telescopic member (300), a transmission mechanism, a linkage mechanism and a forward and reverse-rotating drive motor (600); the base (100), the active telescopic member (200) and the linked telescopic member (300) are arranged in sequence from bottom to top; the transmission mechanism is arranged 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; and the linkage mechanism can drive the linked telescopic member (300) to simultaneously telescope 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 comprises 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 is consistent with the sliding direction of the active telescopic member (200); the first worm gear mechanism and the second worm gear mechanism are respectively arranged at two ends of the main shaft (410); 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 two-way telescopic device according to claim 2, characterized in that: The first worm gear mechanism comprises a first worm (421), a first linkage gear (423), and a first worm wheel (422) meshed with the first worm (421); the second worm gear mechanism comprises a second worm (431), a second linkage gear (433), and a second worm wheel (432) meshed with the second worm (431); the first worm (421) and the second worm (431) are respectively mounted on two ends of the main shaft (410); the first worm wheel (422) and the second worm wheel (432) are respectively rotatably mounted on two 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; and 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 body (411), an intermediate shaft body (412) and a right shaft body (413). The left shaft body (411) is connected to the left end of the intermediate shaft body (412) through a left coupling (414), and the right shaft body (413) is connected to the right end of the intermediate shaft body (412) through a right coupling (415). The first worm (421) is installed on the left shaft body (411), and the second worm (431) is installed on the right shaft body (413).

5. The bidirectional telescopic device according to any one of claims 1 to 4, characterized in that: The linkage mechanism comprises a first transmission belt (510) and a second transmission belt (520), wherein 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 a first pulley (550) installed on the active telescopic member (200) and is connected to an end of the linkage telescopic member (300) away from the first pulley (550); and 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 a second pulley (560) installed on the linkage telescopic member (300) and is connected to an end of the linkage telescopic member (300) away from the second pulley (560).

6. The two-way 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 a first pressing block (530) and a second pressing block (540), respectively. The first pressing block (530) and the second pressing block (540) are respectively provided with long holes, and the linkage telescopic member (300) is provided with corresponding screw holes. By adjusting the docking position of the long holes and the screw holes, the tightness of the transmission belt can be adjusted.

7. The bidirectional telescopic device according to claim 5, characterized in that: A track and a slide groove are provided between the base (100) and the active telescopic member (200), and between the active telescopic member (200) and the linked telescopic member (300). A row of horizontal rollers and a row of vertical rollers are respectively 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 respectively contact the corresponding side surfaces of the slide groove.

8. The two-way 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 linked telescopic member (300) is provided with a loading lever (310), a mechanical gripper or a supporting platform.

10. The bidirectional telescopic device according to claim 1, characterized in that: One or more light sensors are respectively provided at both ends of the base (100), and a blocking piece (740) cooperating with the light sensors is provided on the active telescopic member (200). The blocking piece (740) can move with the active telescopic member (200) and selectively block one or more light sensors during the movement.

11. The bidirectional telescopic device according to claim 1, characterized in that: The device further comprises a lifting mechanism, wherein the lifting mechanism comprises a lifting motor (810), a lifting plate (820) and a base plate (830), wherein 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), and the base (100) is installed above the lifting plate (820), and the telescopic shaft of the lifting motor (810) can drive the bidirectional telescopic device to move up and down.

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

13. The two-way telescopic device according to claim 5, characterized in that: A first limiting boss (570) and a second limiting boss (580) are provided at the bottom of the linkage telescopic member. The first limiting boss (570) cooperates with the first pulley (550) to limit the extreme position of the linkage telescopic member extending to one side, and the second limiting boss (580) cooperates with the second pulley (560) to limit the extreme position of the linkage telescopic member extending to the other side.

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