Sample tube storage device for clinical laboratory

Abstract

The invention provides a sample tube storage device for a clinical laboratory, and relates to the technical field of experimental apparatuses. A carrying table is fixedly mounted at the upper end of the bottom box; protective sleeve plates are vertically and upwards fixedly mounted at the annular edges of three sides of the upper end of the carrying table respectively; a rotating base plate is fixedly mounted between the carrying table and the top of the bottom box; the storage rack is vertically and rotatably mounted on the rotary base plate, and the sample tubes are vertically and annularly inserted on the storage rack; the packaging top plate is fixed at the upper end of the protective sleeve plate; a rotary control disc is vertically and rotatably installed on the carrying table, and a rotary shaft of the rotary control disc vertically downwards penetrates through the rotary base plate and extends into an inner cavity of the bottom box. According to the device, stable and accurate rotation of the storage rack is achieved through a transmission system composed of a control hand wheel, a control shaft rod, a worm, a worm gear and a rotary control disc, worm gear and worm transmission has the self-locking characteristic, reverse rotation of the storage rack due to accidental collision or the gravity effect is effectively prevented, and the positioning stability is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of laboratory equipment technology, and in particular to a sample tube storage device for use in a laboratory. Background Technology

[0002] In the daily work of a laboratory, the storage, management, and retrieval of sample tubes are crucial. Currently, common sample tube storage devices are mostly simple static supports or turntables, with limited functionality and low automation. Operators need to manually rotate the entire turntable and locate the target sample tube among multiple samples, which is inefficient and prone to errors. During rotation, the sample tubes lack effective top and lateral restraints, posing a risk of tipping over or slipping due to shaking, potentially leading to sample confusion or biosafety risks. Furthermore, existing devices typically lack positioning and locking functions, failing to automatically stop and lock the position when the target sample tube reaches the desired location. Retrieval operations rely entirely on visual observation and manual control, resulting in insufficient accuracy and reliability. These shortcomings are particularly pronounced in high-throughput work environments requiring frequent retrieval and placement of different samples, increasing the workload of operators and impacting the overall efficiency and accuracy of laboratory work. Summary of the Invention

[0003] This invention relates to a sample tube storage device for a laboratory, which achieves orderly, precise, and safe automated operation of the sample tube storage device through the organic combination of mechanical transmission and electronic limit control.

[0004] This invention provides a sample tube storage device for a laboratory, specifically comprising: a base box; a platform fixedly mounted on the upper end of the base box; protective sleeves fixedly mounted vertically upward on the three circumferential edges of the upper end of the platform; a rotating base plate fixedly mounted between the platform and the top of the base box; a storage rack vertically rotatably mounted on the rotating base plate, on which sample tubes are vertically inserted in a ring; a top sealing plate fixedly mounted on the upper end of the protective sleeves; a rotary control disk vertically rotatably mounted on the platform, the rotating shaft of the rotary control disk extending vertically downward through the rotating base plate into the inner cavity of the base box; a control shaft horizontally rotatably mounted in the base box on one side of the rotating shaft of the rotary control disk, the outer end of the control shaft extending out of the side plate of the base box, a control handwheel fixedly mounted at the end of the control shaft, an electromagnetic limiter fixedly mounted on the side wall of the base box on one side of the control handwheel; and a controller fixedly mounted on one side wall of the base box.

[0005] Optionally, the opening end of the protective sleeve is a "V"-shaped groove structure, and the "V"-shaped groove structure is the placement position for a single sample tube.

[0006] Optionally, the storage rack has a top plate and a bottom plate at its upper and lower ends, respectively. There is a hole between the top plate and the bottom plate for vertically inserting twelve sample tubes. The bottom plate has a twelve-petal-shaped structure, and a protruding contact sensor is provided in the middle of the outer wall of each petal of the bottom plate.

[0007] Optionally, a guide pin is fixedly installed vertically upward at the top edge of the rotary control disk. During the rotation of the rotary control disk, the guide pin always moves along the edge of the chassis. A worm gear is fixedly connected to the lower end of the rotary control disk's shaft. When the guide pin presses against the contact sensor, the corresponding sample tube is in a removable position. The electromagnetic limiter is activated to limit the control handwheel, and the position of the rotary control disk is fixed.

[0008] Optionally, the inner end of the control shaft is a worm gear, which meshes with a worm wheel. A handle is vertically fixed at the outer edge of the control handwheel. A plug is provided at the end of the handle. A grip sleeve is slidably fitted on the handle inside the plug. A top spring is fitted on the handle inside the grip sleeve. A protruding contact button is provided on the handle at the position of the top spring. The inner edge of the grip sleeve near the contact button has a chamfered structure. When the grip sleeve moves inward, it presses the contact button. After the contact button is triggered, the electromagnetic limiter is released.

[0009] Optionally, the electromagnetic limiter has a limit block slidably provided at one end facing the control handwheel. The inner end of the limit block is a magnet, and an electromagnet is provided at the position corresponding to the limit block in the inner cavity of the electromagnetic limiter. After the contact sensor is triggered, the electromagnetic limiter pushes out the limit block, and the end of the limit block presses against the control handwheel to brake. After the contact button is triggered, the electromagnetic limiter retracts the limit block, and the control handwheel is released from the braking state.

[0010] Optionally, the bottom of the top plate is provided with a limiting ring groove that is consistent with the rotation path of the sample tube, and the upper end of the sample tube is tangent to the top of the limiting ring groove.

[0011] Optionally, the top plate has an inner slot facing the pick-up / placement position. The inner slot is slidably equipped with a stop tongue block. When the stop tongue block is extended, its bottom is tangent to the upper end of the sample tube below. The upper end of the inner slot has a movable strip hole along the movement direction of the stop tongue block. The upper root of the stop tongue block is provided with a guide tongue plate vertically upward. The guide tongue plate slides through the movable strip hole. The upper end of the movable strip hole is vertically fixed to the inner side of the top of the top plate. The guide rod is vertically slidably sleeved with the top plate. The guide rod is provided with a return spring. The return spring holds the stop tongue block outward. The front end of the guide rod is a vertically upward grip structure.

[0012] This invention provides a sample tube storage device for a laboratory, which has the following advantages: First, the device achieves smooth and precise rotation of the storage rack through a transmission system consisting of a control handwheel, control shaft, worm gear, worm wheel, and rotary control disc. The worm gear transmission has a self-locking characteristic, effectively preventing the storage rack from rotating in the opposite direction due to accidental collisions or gravity, ensuring positioning stability. Second, the device achieves automated positioning and locking of the sample tube through an electronically controlled positioning system consisting of a guide pin, contact sensor, electromagnetic limiter, and controller. When the target sample tube rotates to the pick-up / placement position, the guide pin triggers the contact sensor, and the controller controls the electromagnetic limiter to actuate, causing the limit block to quickly stop the control handwheel, thereby firmly locking the entire rotating mechanism and ensuring absolute accuracy of the pick-up / placement position, greatly reducing operator visual fatigue and workload.

[0013] Third, the safety of the device has been comprehensively improved. The protective sleeve provides protection from three sides, and its V-shaped groove design not only defines a single access channel but also facilitates operation. The limiting ring groove at the bottom of the top plate circumferentially limits the upper end of the sample tube during rotation, effectively preventing shaking and tipping. In particular, the stop tongue block in Embodiment 2 is constantly extended under the action of the return spring, and its bottom is tangent to the upper end of the sample tube, forming another physical barrier. The obstruction is only released when the guide rod is manually lifted. This design greatly avoids the risk of the sample tube accidentally slipping out of the access position due to accidental contact during non-operational periods, ensuring extremely high safety.

[0014] Finally, its human-computer interaction design is highly user-friendly. Unlocking is achieved simply by gripping and moving the grip sleeve inwards; this action is ergonomic, natural, and effortless. The chamfered structure of the grip sleeve ensures smooth pressure on the contact button, making the entire process smooth and efficient. In summary, this invention integrates mechanical transmission, electrical sensing, and automatic control, successfully solving the problems of low efficiency, inaccurate positioning, and poor safety in existing technologies. It achieves intelligent, precise, and safe sample tube storage, possessing extremely high market application value. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the first axial view structure of the present invention is shown; Figure 2 A schematic diagram of the second axial view structure of the present invention is shown; Figure 3 This diagram shows a top-axis view of the protective sleeve of the present invention in the removed state. Figure 4 A schematic diagram of the axial view structure of the present invention with the protective sleeve removed is shown. Figure 5 A schematic diagram of the top plate portion in a split state is shown. Figure 6 This diagram shows an axial view of the storage rack and rotating substrate of the present invention in a separated state. Figure 7 A schematic diagram of the axial view of the control shaft portion of the present invention is shown; Figure 8 A schematic diagram of the control shaft section of the present invention in a split-view state is shown.

[0018] List of reference numerals in the attached diagram: 1. Base box; 2. Platform; 3. Protective sleeve; 4. Storage rack; 401. Chassis; 402. Top plate; 403. Contact sensor; 5. Sample tubes; 6. Rotary control disc; 601. Guide pin; 602. Worm gear; 7. Control shaft; 701. Control handwheel; 702. Hand lever; 7021. Contact button; 703. Worm gear; 704. Grip sleeve; 705. Top spring; 8. Electromagnetic limit switch; 801. Limit block; 9. Controller; 10. Top plate; 1001. Limiting ring groove; 1002. Inner slot; 1003. Tongue block; 1004. Movable strip hole; 1005. Guide tongue plate; 1006. Guide rod; 1007. Return spring; 11. Rotating substrate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please refer to Figures 1 to 8 : Example 1: This invention proposes a sample tube storage device for a laboratory, comprising: a base box 1; a platform 2 fixedly mounted on the upper end of the base box 1; protective sleeve plates 3 fixedly mounted vertically upward on the three sides of the upper end of the platform 2; a rotating base plate 11 fixedly mounted between the platform 2 and the top of the base box 1; a storage rack 4 vertically rotatably mounted on the rotating base plate 11, and sample tubes 5 vertically and annularly inserted on the storage rack 4; a top sealing plate 10 fixedly mounted on the upper end of the protective sleeve plate 3; a rotary control disk 6 vertically rotatably mounted on the platform 2, the rotating shaft of the rotary control disk 6 extending vertically downward through the rotating base plate 11 into the inner cavity of the base box 1; a control shaft 7 horizontally rotatably mounted in the base box 1 on one side of the rotating shaft of the rotary control disk 6, the outer end of the control shaft 7 extending out of the side plate of the base box 1, a control handwheel 701 fixedly mounted at the end of the control shaft 7, an electromagnetic limiter 8 fixedly mounted on the side wall of the base box 1 on one side of the control handwheel 701; and a controller 9 fixedly mounted on one side wall of the base box 1.

[0021] Among them, the opening end of the protective sleeve 3 is a "V" shaped groove structure, and the "V" shaped groove structure is the position for taking out and placing a single sample tube 5.

[0022] The storage rack 4 has a top plate 402 and a bottom plate 401 at its upper and lower ends, respectively. There are holes between the top plate 402 and the bottom plate 401 for vertically inserting twelve sample tubes 5. The bottom plate 401 has a twelve-petal-shaped structure, and a protruding contact sensor 403 is provided in the middle of the outer wall of each petal of the bottom plate 401.

[0023] Among them, a guide pin 601 is fixedly installed vertically upward at the top edge of the rotary control disk 6. During the rotation of the rotary control disk 6, the guide pin 601 always moves along the edge of the chassis 401. A worm gear 602 is fixedly connected to the lower end of the rotating shaft of the rotary control disk 6. When the guide pin 601 presses the contact sensor 403 to trigger, the corresponding sample tube 5 is in the removable position. The electromagnetic limiter 8 is activated to limit the control handwheel 701, and the position of the rotary control disk 6 is fixed.

[0024] The inner end of the control shaft 7 is a worm gear 703, which meshes with the worm wheel 602. A hand lever 702 is vertically fixed at the outer end of the control handwheel 701. A plug is provided at the end of the hand lever 702. A grip 704 is slidably mounted on the hand lever 702 inside the plug. A top spring 705 is mounted on the hand lever 702 inside the grip 704. A protruding contact button 7021 is provided on the hand lever 702 at the position of the top spring 705. The inner ring edge of the grip 704 near the contact button 7021 has a chamfered structure. When the grip 704 moves inward, it presses the contact button 7021. After the contact button 7021 is triggered, the electromagnetic limiter 8 is released.

[0025] The electromagnetic limiter 8 has a limit block 801 slidably mounted on one end facing the control handwheel 701. The inner end of the limit block 801 is a magnet, and an electromagnet is mounted at the position corresponding to the limit block 801 in the inner cavity of the electromagnetic limiter 8. After the contact sensor 403 is triggered, the electromagnetic limiter 8 pushes the limit block 801 out, and the end of the limit block 801 presses against the control handwheel 701 to brake. After the contact button 7021 is triggered, the electromagnetic limiter 8 retracts the limit block 801, and the control handwheel 701 is released from the brake state.

[0026] The top plate 10 has a limiting ring groove 1001 at the bottom that is aligned with the rotation path of the sample tube 5, and the upper end of the sample tube 5 is tangent to the top of the limiting ring groove 1001.

[0027] In Example 2, based on Example 1, an inner slot 1002 is provided on the top plate 10 facing the pick-up / placement position. A stop block 1003 is slidably provided in the inner slot 1002. When the stop block 1003 is extended, its bottom is tangent to the upper end of the sample tube 5 below. A movable slot hole 1004 is provided in the upper wall of the inner slot 1002 along the moving direction of the stop block 1003. A guide tongue plate 1005 is provided vertically upward at the upper root of the stop block 1003. The guide tongue plate 1005 slides through the movable slot hole 1004. A guide rod 1006 is vertically fixed to the upper end of the movable slot hole 1004 towards the inner side of the top of the top plate 10. The guide rod 1006 is vertically slidably sleeved with the top plate 10. A return spring 1007 is provided on the guide rod 1006. The return spring 1007 pushes the stop block 1003 outward. The front end of the guide rod 1006 is a vertically upward grip structure.

[0028] The following further explains the function and effect of each structure mentioned above, so that those skilled in the art can better understand the technical solution: The base box 1 serves as the supporting foundation for the entire device, ensuring stability and accommodating internal transmission components. The platform 2 is fixedly installed on the upper end of the base box 1, used to support and connect other components, providing a working platform. The protective sleeve 3 is vertically installed on the three sides of the upper end of the platform 2, forming a protective barrier to prevent the sample tube 5 from accidentally falling off or being disturbed by external forces during operation. Its opening end is designed with a V-shaped groove structure, facilitating the user's handling of individual sample tubes 5, improving operational convenience and safety. The rotating base plate 11 is fixed between the platform 2 and the top of the base box 1, providing a rotational support foundation to ensure the smooth rotation of the storage rack 4.

[0029] The storage rack 4 is vertically rotatably mounted on the rotating base plate 11 for vertically and annularly inserting multiple sample tubes 5, achieving orderly storage. The upper and lower ends of the storage rack 4 are a top plate 402 and a bottom plate 401, respectively. Between the top plate 402 and the bottom plate 401 are holes for vertically inserting twelve sample tubes 5, ensuring the sample tubes 5 are upright and stable. The bottom plate 401 is designed with a twelve-petal-shaped structure, with a protruding contact sensor 403 in the middle of the outer wall of each petal. This sensor detects the position of the sample tube 5. When the sample tube 5 rotates to a specific position, the contact sensor 403 is triggered, sending a signal to control subsequent actions.

[0030] The top plate 10 is fixedly encapsulated on the upper end of the protective sleeve plate 3, providing top protection and a sealed environment to prevent dust or contaminants from entering. The bottom of the top plate 10 has a limiting ring groove 1001, the shape of which matches the rotation path of the sample tube 5. The upper end of the sample tube 5 is tangent to the top of the limiting ring groove 1001, thereby stabilizing the sample tube 5 during rotation and preventing shaking or tilting. The top plate 10 has an inner slot 1002 facing the pick-and-place position. A stop tongue block 1003 slides within the inner slot 1002. When extended, the bottom of the stop tongue block 1003 is tangent to the upper end of the sample tube 5 below, effectively preventing the sample tube 5 from accidentally sliding out when not in use. A movable slot 1004 is provided in the upper end slot wall of the inner slot 1002 along the moving direction of the tongue block 1003. A guide tongue plate 1005 is provided vertically upward at the upper root of the tongue block 1003. The guide tongue plate 1005 slides through the movable slot 1004. A guide rod 1006 is vertically fixed at the upper end of the movable slot 1004 towards the inner side of the top of the top plate 10. The guide rod 1006 is vertically slidably sleeved with the top plate 10. A reset spring 1007 is provided on the guide rod 1006. The reset spring 1007 pushes the tongue block 1003 outward to achieve automatic reset. The user can operate the tongue block 1003 through the grip structure at the front end of the guide rod 1006 to easily pick up and put down the sample tube 5.

[0031] The rotary control disk 6 is vertically mounted on the platform 2, with its rotating shaft extending vertically downward through the rotating base plate 11 into the inner cavity of the base box 1, used to control the rotation of the storage rack 4. A worm gear 602 is fixedly connected to the lower end of the rotating shaft of the rotary control disk 6 to realize power transmission. A guide pin 601 is fixedly installed vertically upward at the top circumference of the rotary control disk 6. During rotation, the guide pin 601 always moves along the circumference of the base 401. When the guide pin 601 presses against the contact sensor 403, a signal is triggered, indicating that the corresponding sample tube 5 is in the removable position. At this time, the electromagnetic limiter 8 is activated to limit the control handwheel 701, thereby fixing the position of the rotary control disk 6 and ensuring accurate retrieval and placement.

[0032] The control shaft 7 is horizontally rotatably mounted in the base box 1, with one side extending out of the side plate of the base box 1. A control handwheel 701 is fixedly mounted at its end, allowing the user to drive the entire rotation mechanism by rotating the handwheel 701. The inner end of the control shaft 7 is a worm gear 703, which meshes with a worm wheel 602, achieving smooth and precise rotation control through worm gear transmission. A handle 702 is vertically fixed to the outer edge of the control handwheel 701. A plug is located at the end of the handle 702, and a grip 704 slides on the handle 702 inside the plug. A top spring 705 is mounted on the handle 702 inside the grip 704, and a protruding contact button 7021 is located on the handle 702 at the position of the top spring 705. When the user holds the grip 704 and moves it inward, the chamfered structure of the grip 704 presses against the contact button 7021. After the contact button 7021 is triggered, the electromagnetic limiter 8 is released from its limit, allowing the control handwheel 701 to rotate freely, thereby achieving smooth operation of human-machine interaction.

[0033] An electromagnetic limit switch 8 is fixed to the side wall of the base box 1 to limit the rotation of the control handwheel 701. A limit block 801 is slidably mounted on one end of the electromagnetic limit switch 8 facing the control handwheel 701. The inner end of the limit block 801 is a magnet, and an electromagnet is located at the corresponding position inside the electromagnetic limit switch 8. When the contact sensor 403 is triggered, the electromagnetic limit switch 8 is energized, pushing the limit block 801 out. The end of the limit block 801 presses against the control handwheel 701, fixing its position. When the contact button 7021 is triggered, the electromagnetic limit switch 8 is de-energized, retracting the limit block 801, releasing the brake on the control handwheel 701, and allowing rotation. A controller 9 is fixedly mounted on one side wall of the base box 1, integrating electronic components such as the control electromagnetic limit switch 8 and the contact sensor 403 to achieve automated operation and status monitoring, improving the intelligence and reliability of the entire device.

[0034] Working principle: The user operates the device by rotating the control handwheel 701, which drives the control shaft 7 and the worm gear 703 at its inner end to rotate. Since the worm gear 703 meshes with the worm wheel 602 fixed to the lower end of the rotating control disk 6 shaft, the rotational motion is transmitted and converted into the vertical rotational motion of the rotating control disk 6 on the platform 2. The rotation of the rotating control disk 6 drives the storage rack 4 to rotate synchronously through the guide pin 601 at its top, thereby causing the sample tube 5, which is annularly inserted between the top plate 402 and the bottom plate 401 of the storage rack 4, to rotate accordingly.

[0035] When a user needs to pick up or place a sample tube 5, they continuously rotate the control handwheel 701 until the target sample tube 5 rotates to the V-shaped slot of the protective sleeve 3. During this rotation, the guide pin 601 on the control disc 6 moves along the petal-shaped ring edge of the chassis 401. When the sample tube 5 precisely reaches the pick-up / placement position, the guide pin 601 presses against the contact sensor 403 on the outer wall of the petal of the chassis 401 at that position. After the contact sensor 403 is triggered, it sends a signal to the controller 9, which then activates the electromagnetic limiter 8. After the electromagnetic limiter 8 is energized, the electromagnet inside it generates magnetic force, pushing out the sliding limit block 801, causing the end of the limit block 801 to tightly press against the control handwheel 701, preventing it from rotating through a braking action. This securely locks the control disc 6 and the storage rack 4 in their current positions, ensuring the accuracy and stability of the pick-up / placement operation.

[0036] At this point, the user can place or remove the sample tube 5. Before placing or removing it, if it is necessary to operate the stop block 1003 on the top plate 10, the user can lift the grip structure at the front end of the guide rod 1006. The guide rod 1006 compresses the reset spring 1007 and drives the guide tongue plate 1005 and the stop block 1003 to retract inward along the inner slot 1002, so that its bottom is no longer in contact with the upper end of the sample tube 5, making room for operation. After placing or removing it, the guide rod 1006 is released. Under the support of the reset spring 1007, the stop block 1003 automatically resets and extends, and its bottom is tangent to the upper end of the sample tube 5 again, which serves as a limit protection function.

[0037] After completing the current sample tube 5 loading / unloading operation, the user needs to unlock the control handwheel 701 for the next rotation. The user simply grasps and moves the grip 704 on the control handwheel 701 inwards. As the grip 704 moves inwards, its chamfered inner side presses against and triggers the contact button 7021 on the lever 702. Once triggered, the contact button 7021 sends a signal to the controller 9, which de-energizes the electromagnetic limit switch 8. The limit block 801 retracts under the action of its internal mechanism, thus releasing the brake limit on the control handwheel 701. The user can then rotate the control handwheel 701 again, causing the storage rack 4 to rotate and transport the next target sample tube 5 to the loading / unloading position.

[0038] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0039] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0040] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A sample tube storage device for a laboratory, comprising: A base box (1); a platform (2) is fixedly installed on the upper end of the base box (1); protective sleeves (3) are fixedly installed vertically upward on the three sides of the upper end of the platform (2); characterized in that a rotating base plate (11) is fixedly installed between the platform (2) and the top of the base box (1); a storage rack (4) is vertically rotatably installed on the rotating base plate (11), and sample tubes (5) are vertically inserted in a ring on the storage rack (4); a top sealing plate (10) is fixedly installed on the upper end of the protective sleeve (3); a rotating base plate (10) is vertically rotatably installed on the platform (2). The control disk (6) has its rotating shaft extending vertically downward through the rotating base plate (11) into the inner cavity of the bottom box (1); a control shaft (7) is horizontally mounted in the bottom box (1) on one side of the rotating shaft of the control disk (6), the outer end of the control shaft (7) extends out of the side plate of the bottom box (1), a control handwheel (701) is fixedly mounted at the end of the control shaft (7), and an electromagnetic limiter (8) is fixedly mounted on the side wall of the bottom box (1) on one side of the control handwheel (701); a controller (9) is fixedly mounted on one side wall of the bottom box (1).

2. The sample tube storage device for a laboratory according to claim 1, characterized in that, The opening end of the protective sleeve (3) is a "V" shaped groove structure, and the "V" shaped groove structure is the place for picking up and putting in a single sample tube (5).

3. A sample tube storage device for a laboratory according to claim 1, characterized in that, The storage rack (4) has a top plate (402) and a bottom plate (401) at its upper and lower ends, respectively. There is a hole between the top plate (402) and the bottom plate (401) for vertically inserting twelve sample tubes (5). The bottom plate (401) has a twelve-petal-shaped structure. A protruding contact sensor (403) is provided in the middle of the outer wall of each petal of the bottom plate (401).

4. A sample tube storage device for a laboratory according to claim 3, characterized in that, The top edge of the rotary control disk (6) is vertically fixed with a guide pin (601). During the rotation of the rotary control disk (6), the guide pin (601) always moves along the edge of the chassis (401). The lower end of the rotating shaft of the rotary control disk (6) is fixedly connected with a worm gear (602). When the guide pin (601) presses the contact sensor (403) to trigger, the corresponding sample tube (5) is in the removable position. The electromagnetic limiter (8) starts to limit the control handwheel (701), and the position of the rotary control disk (6) is fixed.

5. A sample tube storage device for a laboratory according to claim 1, characterized in that, The inner end of the control shaft (7) is a worm (703), which meshes with the worm wheel (602). A hand lever (702) is vertically fixed at the outer end of the control handwheel (701). A plug is provided at the end of the hand lever (702). A grip (704) is slidably mounted on the hand lever (702) inside the plug. A top spring (705) is mounted on the hand lever (702) inside the grip (704). A protruding contact button (7021) is provided on the hand lever (702) at the position of the top spring (705). The inner edge of the grip (704) near the contact button (7021) is chamfered. The grip (704) moves inward to squeeze the contact button (7021). After the contact button (7021) is triggered, the electromagnetic limiter (8) is released.

6. A sample tube storage device for a laboratory according to claim 5, characterized in that, The electromagnetic limiter (8) has a limit block (801) slidably provided at one end facing the control handwheel (701). The inner end of the limit block (801) is a magnet, and an electromagnet is provided at the position corresponding to the limit block (801) in the inner cavity of the electromagnetic limiter (8). After the contact sensor (403) is triggered, the electromagnetic limiter (8) pushes out the limit block (801), and the end of the limit block (801) presses against the control handwheel (701) to brake. After the contact button (7021) is triggered, the electromagnetic limiter (8) retracts the limit block (801), and the control handwheel (701) is released from the braking state.

7. A sample tube storage device for a laboratory according to claim 1, characterized in that, The bottom of the top plate (10) is provided with a limiting ring groove (1001) that is consistent with the rotation path of the sample tube (5), and the upper end of the sample tube (5) is tangent to the top of the limiting ring groove (1001).

8. A sample tube storage device for a laboratory according to claim 1, characterized in that, The top plate (10) has an inner slot (1002) facing the pick-up / placement position. A tongue block (1003) is slidably provided in the inner slot (1002). When the tongue block (1003) is extended, its bottom is tangent to the upper end of the sample tube (5) below. An movable slot hole (1004) is provided in the upper wall of the inner slot (1002) along the direction of the tongue block (1003). A guide tongue plate is vertically upwards at the upper root of the tongue block (1003). 1005), guide tongue plate (1005) slides through movable strip hole (1004), upper end of movable strip hole (1004) is vertically fixed to the inner side of top plate (10) and guide rod (1006) is vertically slidably sleeved with top plate (10), guide rod (1006) is provided with return spring (1007) on guide rod (1006), return spring (1007) pushes the stop tongue block (1003) outward, and the front end of guide rod (1006) is a vertically upward grip structure.

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