Ultralow-temperature precise intelligent sampling instrument

Abstract

The invention discloses an ultralow-temperature precise intelligent sampling instrument which comprises an ultralow-temperature sample platform arranged at the top of a base, a plurality of sets of drill pins are movably inserted into the surface of the ultralow-temperature sample platform, an electric control platform is rotationally arranged on one side of the top of the base, and a U-shaped placement frame is arranged on one side of the electric control platform through a lifting motor in a vertical moving mode. A clamping mechanism is erected on the top of the U-shaped placement frame through a transmission frame, the clamping mechanism comprises a transmission motor and a pull rod assembly, and the transmission motor drives the pull rod assembly to integrally move up and down on one side of the U-shaped placement frame; the two sets of conical clamping blocks are oppositely arranged, the tops of the conical clamping blocks are rotationally arranged at the bottom of the driving side plate through connecting rods, the surfaces of the conical clamping blocks are in an inclined plane shape, and the pull rod assembly drives the two sets of conical clamping blocks to oppositely rotate and conduct clamping operation on the upper portion of a drill point; according to the device, automatic clamping, mounting, dismounting and sampling work of the drill point can be effectively achieved, and the collecting efficiency is improved while labor force is liberated.

Description

Technical Field

[0001] The present invention relates to the technical field of sample extraction, and in particular to an ultra-low temperature precision intelligent sampler. Background Art

[0002] The collection and preservation of biological samples is a crucial link in biomedical research, especially in the fields of precision medicine, disease diagnosis, drug development, genomics research, etc. The quality of biological samples directly affects the reliability and accuracy of subsequent experimental results. Due to the complexity and variability of biological samples themselves and their vulnerability under different environmental conditions, the collection process of biological samples requires not only precise sampling techniques and equipment, but also strict compliance with relevant standard operating procedures and biosafety regulations.

[0003] Currently, biological sample sampling is mostly carried out inside the laboratory. The biological drill chuck of the biological sample collection equipment must be manually installed and disassembled, and the samples are stored manually. This may cause sample contamination, and the operators will be exposed to potential biosafety threats from the samples. At the same time, the manual collection method cannot effectively guarantee the collection efficiency of biological samples.

[0004] Therefore, how to provide an ultra-low temperature precision intelligent sampler is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] One purpose of the present invention is to provide an ultra-low temperature precision intelligent sampler, which can effectively realize the automatic clamping, installation, disassembly and sampling of the drill bit, thereby freeing up labor and improving the collection efficiency.

[0006] According to an embodiment of the present invention, an ultra-low temperature precision intelligent sampler comprises an ultra-low temperature sample platform arranged on the top of a base, a plurality of groups of drill needles are movably plugged into the surface of the ultra-low temperature sample platform, an electric control platform is rotatably arranged on one side of the top of the base, a U-shaped mounting frame is moved up and down by a lifting motor on one side of the electric control platform, a clamping mechanism is arranged on the top of the U-shaped mounting frame through a transmission frame, the clamping mechanism comprises a transmission motor and a pull rod assembly, and the transmission motor drives the pull rod assembly to move up and down as a whole on one side of the U-shaped mounting frame;

[0007] Two groups of conical clamping blocks facing each other, the top of the conical clamping block is rotatably arranged at the bottom of the driving side plate through a connecting rod, the surface of the conical clamping block is in the shape of an inclined plane, and the pull rod assembly drives the two groups of conical clamping blocks to rotate in opposite directions and perform a clamping operation on the top of the drill needle;

[0008] A separation mechanism is provided on the inner side of the U-shaped mounting frame near the output shaft of the transmission motor. The separation mechanism drives the docking teeth to engage with the meshing teeth at the bottom of the U-shaped mounting frame. One side of the meshing teeth is meshed with transmission teeth. The driving side plate is fixed to the bottom of the transmission teeth. The transmission motor drives the conical clamping block and the drill needle to rotate under the U-shaped mounting frame through the transmission teeth.

[0009] Furthermore, the output shaft of the transmission motor is fixedly connected to the rotating shaft rod, and the upper and lower surfaces of the rotating shaft rod are respectively provided with limiting grooves, and the limiting groove position at the top of the rotating shaft rod is slidably connected with a main tooth, and a secondary tooth is meshed with one side of the main tooth, and the secondary tooth is limited to rotate in the transmission frame.

[0010] Furthermore, the pull rod assembly includes a threaded rod and a rotating rod, the rotating rod rotates at the bottom of the threaded rod through a movable pin, the threaded rod passes through the auxiliary teeth and is threadedly connected to the auxiliary teeth, the top of the threaded rod is fixedly connected to the limiting wheel, the top of the transmission frame is fixedly connected to the rail plate near the limiting wheel, and the limiting wheel and the rail plate slide in a limited manner.

[0011] Furthermore, a wedge-shaped notch is provided at the bottom of the rotating rod, and a driving slide groove is provided transversely through the upper position of the rotating rod near the wedge-shaped notch, and the rotating rod movably passes through the U-shaped mounting frame and the transmission gear.

[0012] Furthermore, the rotating rod drives the sliding groove and the side plate below the side plate to slide in a limited manner, the wedge surface notch and the inclined angle of the conical clamping block surface match each other, and the two groups of connecting rods are elastically connected by a spring member.

[0013] Furthermore, the separation mechanism includes a first sleeve bracket and a second sleeve bracket, the top of the second sleeve bracket is fixed to the bottom of the first sleeve bracket through a connecting plate, and one side of the first sleeve bracket is fixed to the output end of the actuator electric rod through a connecting plate, and the actuator electric rod drives the first sleeve bracket and the second sleeve bracket to move up and down on the surface of the rotating shaft.

[0014] Furthermore, a first outer convex ring is rotatably connected inside the first sleeve bracket, and the first outer convex ring is fixed to the bottom of the main tooth. A second outer convex ring is rotatably connected inside the second sleeve bracket, and the bottom of the second outer convex ring is fixed to the docking tooth. A retention groove is penetrated through the U-shaped mounting frame near the docking tooth.

[0015] Furthermore, a chuck drilling mechanism is provided on the bottom surface of the U-shaped mounting frame, and the chuck drilling mechanism includes docking teeth, meshing teeth and transmission teeth. The transmission teeth and docking teeth are respectively meshed on the left and right sides of the meshing teeth, and the meshing teeth are limited and rotated at the bottom of the U-shaped mounting frame through the shaft rod.

[0016] Furthermore, the axial center position of the docking tooth is penetrated and opened in a spline shape, and the docking tooth is limitedly slidably connected with the limiting sliding groove at the bottom of the rotating shaft.

[0017] Furthermore, the transmission gear is limitedly rotated at the bottom of the U-shaped mounting frame, driving two groups of side plates, and the two groups of driving side plates are respectively located on the left and right sides of the bottom of the rotating rod.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a clamping mechanism and a chuck drilling mechanism. Under normal driving of the transmission motor, the pull rod assembly can be driven to move downward on one side of the U-shaped mounting frame as a whole. When the rotating rod moves downward, the surface of the conical clamping block below the driving side plate can be pushed through the wedge surface notch. Under the contact of the inclined surfaces of the two, the two groups of conical clamping blocks will come close to each other, thereby clamping the drill rod and the drill needle on the top of the ultra-low temperature sample platform. Otherwise, the clamping operation is realized, and the drill needle is taken and placed in cooperation with the driving of the electric control platform, thereby replacing manual sampling and effectively eliminating the problem that the sample poses a potential safety threat to the operator during the sampling process.

[0020] The present invention provides a separation mechanism and a chuck rotary drilling mechanism. After the electric rod is started, the connection between the first sleeve bracket and the second sleeve bracket can simultaneously drive the main tooth to move downward so that it is separated from the auxiliary tooth, and the docking tooth is pushed and meshed with the meshing tooth. In this case, the driving effect of the transmission motor is converted from driving the pull rod assembly to directly driving the transmission tooth to rotate, and driving the side plate and the conical clamping block and other components to be directly connected to the bottom of the transmission tooth. At this time, under the driving effect, the drill needle clamped by the conical clamping block will rotate, thereby cooperating with the descending effect of the electric control platform to achieve specific drilling and sampling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of an ultra-low temperature precision intelligent sampler proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the structural connection of a U-shaped mounting frame for an ultra-low temperature precision intelligent sampler proposed in the present invention.

[0024] Figure 3 This is a schematic diagram of the surface structure connection of the rotating shaft of an ultra-low temperature precision intelligent sampler proposed by the present invention.

[0025] Figure 4This is a schematic diagram of the partial cross-section structure of a pull rod assembly of an ultra-low temperature precision intelligent sampler proposed by the present invention.

[0026] Figure 5 This is a schematic diagram of the half-section connection structure of the rotating rod of an ultra-low temperature precision intelligent sampler proposed by the present invention.

[0027] Figure 6 An ultra-low temperature precision intelligent sampler proposed by the present invention Figure 3 A magnified schematic diagram of the structure at point A.

[0028] Figure 7 An ultra-low temperature precision intelligent sampler proposed by the present invention Figure 5 Enlarged schematic diagram of the structure at point B.

[0029] In the figure: 1. base; 2. ultra-low temperature sample platform; 3. electric control platform; 4. lifting motor; 5. U-shaped placement frame; 6. transmission frame; 7. clamping mechanism; 8. separation mechanism; 9. chuck rotary drilling mechanism;

[0030] 71. Transmission motor; 72. Rotating shaft; 73. Main gear; 74. Auxiliary gear; 75. Pull rod assembly; 81. Executing electric rod; 82. First sleeve bracket; 83. Second sleeve bracket; 84. First outer convex ring; 85. Second outer convex ring; 86. Limiting slide groove; 91. Docking teeth; 92. Engaging teeth; 93. Transmission teeth; 94. Driving side plate; 95. Driving slide groove; 96. Wedge notch; 97. Conical clamping block; 98. Connecting rod; 99. Spring member; 751. Threaded rod; 752. Rotating rod; 753. Movable pin; 754. Limiting wheel; 755. Track plate. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] refer to Figure 1-Figure 7 , including an ultra-low temperature sample platform 2 arranged on the top of the base 1, a plurality of groups of drill needles are movably inserted on the surface of the ultra-low temperature sample platform 2, an electric control platform 3 is rotatably arranged on one side of the top of the base 1, a U-shaped placement frame 5 is moved up and down by a lifting motor 4 on one side of the electric control platform 3, a clamping mechanism 7 is arranged on the top of the U-shaped placement frame 5 through a transmission frame 6, and the clamping mechanism 7 includes a transmission motor 71 and a pull rod assembly 75, and the transmission motor 71 drives the pull rod assembly 75 to move up and down as a whole on one side of the U-shaped placement frame 5;

[0033] Two groups of conical clamping blocks 97 are respectively arranged opposite to each other. The top of the conical clamping block 97 is rotatably arranged at the bottom of the driving side plate 94 through a connecting rod 98. The surface of the conical clamping block 97 is in the shape of an inclined plane. The pull rod assembly 75 drives the two groups of conical clamping blocks 97 to rotate oppositely and clamp the top of the drill needle.

[0034] A separation mechanism 8 is provided on the inner side of the U-shaped mounting frame 5 near the output shaft of the transmission motor 71. The separation mechanism 8 drives the docking teeth 91 to engage with the meshing teeth 92 at the bottom of the U-shaped mounting frame 5. A transmission tooth 93 is engaged on one side of the meshing tooth 92, driving the side plate 94 to be fixed at the bottom of the transmission tooth 93. The transmission motor 71 drives the conical clamping block 97 and the drill bit to rotate below the U-shaped mounting frame 5 through the transmission tooth 93.

[0035] Under normal circumstances, the electric control platform 3 rotating above the base 1 cooperates with the lifting motor 4 above the electric control platform 3 to drive the U-shaped mounting frame 5 to rotate and move up and down in the space, and the conical clamping block 97 under the U-shaped mounting frame 5 is used to align the drill needle above the ultra-low temperature sample platform 2 and clamp it, thereby replacing human output, improving sampling efficiency, and eliminating hidden dangers such as biological safety.

[0036] The ultra-low temperature sample platform 2 uses liquid nitrogen cooling technology to store internal biological samples at low temperatures, and the drill needle on the upper side facilitates direct drilling and sampling of the samples.

[0037] In this embodiment, the transmission motor 71 located on the transmission frame 6 can directly drive the pull rod assembly 75 to move up and down after being driven, and then under the effect of the up and down movement of the pull rod assembly 75, drive the two groups of conical clamping blocks 97 to achieve the clamping or loosening operation of the drill needle above the ultra-low temperature sample platform 2, and cooperate with the electric control platform 3 to drive the U-shaped placement frame 5 to move up and down as a whole to achieve the drill needle from the ultra-low temperature sample platform 2, thereby achieving the purpose of sampling;

[0038] The function of the separation mechanism 8 is to drive the docking teeth 91 to engage with the meshing teeth 92 below the U-shaped mounting frame 5. Since one side of the meshing teeth 92 is meshed with the transmission teeth 93, the transmission teeth 93 can be driven to rotate by the transmission motor 71 to drive the two groups of conical clamping blocks 97 to rotate by driving the side plates 94. This effect can effectively realize the rotation of the drill needle, thereby sampling samples in ultra-low temperature conditions.

[0039] refer to Figure 3 , Figure 4 , Figure 5 and Figure 6The output shaft of the transmission motor 71 is fixedly connected to the rotating shaft 72. The upper and lower surfaces of the rotating shaft 72 are respectively provided with limited sliding grooves 86. The limited sliding groove 86 at the top of the rotating shaft 72 is slidably connected with the main tooth 73. The main tooth 73 is meshed with the auxiliary tooth 74 on one side. The auxiliary tooth 74 is limited to rotate in the transmission frame 6. The pull rod assembly 75 includes a threaded rod 751 and a rotating rod 752. The rotating rod 752 is rotated at the bottom of the threaded rod 751 through a movable pin 753. The threaded rod 751 passes through the auxiliary tooth 74 and is threadedly connected with the auxiliary tooth 74. The top of the threaded rod 751 is fixedly connected to the limited wheel 754. The top of the transmission frame 6 near the limited wheel 754 is fixedly connected to the rail plate 755. The limited wheel 754 and the rail plate 755 slide in a limited manner.

[0040] In this embodiment, the transmission motor 71 directly drives the rotating shaft 72 to rotate after starting. The engagement relationship between the limiting sliding groove 86 provided above the rotating shaft 72 and the main tooth 73 enables the main tooth 73 to be directly driven to rotate, so that the auxiliary tooth 74 meshed on one side of the main tooth 73 is also driven to rotate, and the auxiliary tooth 74 is limited to rotate in the transmission frame 6, and it cannot move up and down. In this way, the threaded connection effect of the auxiliary tooth 74 and the threaded rod 751 at this time will provide the threaded rod 751 with a rotation trend, and the threaded rod 751 is above the limiting wheel 75 4 and the rail plate 755, so that the threaded rod 751 will move up and down as a whole, pushing the rotating rod 752 to move synchronously, and when the threaded rod 751 moves upward, since the top of the rotating rod 752 is connected to the threaded rod 751 by the movable pin 753, the rising effect of the threaded rod 751 will also pull the rotating rod 752 up synchronously, so that the transmission motor 71 controls the up and down movement of the threaded rod 751 and the rotating rod 752, and the movement effect is mainly coordinated with the clamping and releasing operation of the conical clamping block 97 later.

[0041] refer to Figure 3 , Figure 4 , Figure 5 and Figure 7 The bottom of the rotating rod 752 is provided with a wedge-shaped notch 96, and a driving slot 95 is provided horizontally through the upper position of the rotating rod 752 near the wedge-shaped notch 96. The rotating rod 752 movably passes through the U-shaped mounting frame 5 and the transmission gear 93. The rotating rod 752 is limitedly slidable with the side plate below the driving side plate 94 through the driving slot 95, and the angle of the inclined surface of the wedge-shaped notch 96 and the surface of the conical clamping block 97 match each other, and the two sets of connecting rods 98 are elastically connected by a spring member 99.

[0042] In this embodiment, the wedge-shaped notch 96 provided at the bottom of the rotating rod 752 matches the inclined surface angle of the conical clamping block 97, so that when the rotating rod 752 descends, its wedge-shaped notch 96 will push the conical clamping blocks 97 to dock with each other until the inclined surfaces are completely fitted. At this time, the two groups of conical clamping blocks 97 will clamp the drill needle below. Otherwise, the two groups of conical clamping blocks 97 will bounce off each other through the spring member 99 between the upper connecting rod 98, thereby achieving separation. A driving groove 95 is provided at the bottom of the rotating rod 752. The sliding effect of the driving groove 95 and the driving side plate 94 enables the rotating rod 752 to descend normally to push the conical clamping block 97, and the height position of the conical clamping block 97 does not change.

[0043] refer to Figure 3 and Figure 6 The separation mechanism 8 includes a first sleeve bracket 82 and a second sleeve bracket 83. The top of the second sleeve bracket 83 is fixed to the bottom of the first sleeve bracket 82 through a connecting plate. One side of the first sleeve bracket 82 is fixed to the output end of the execution electric rod 81 through a connecting plate. The execution electric rod 81 drives the first sleeve bracket 82 and the second sleeve bracket 83 to move up and down on the surface of the rotating shaft 72. The first sleeve bracket 82 is rotatably connected with a first outer convex ring 84, which is fixed to the bottom of the main tooth 73. The second sleeve bracket 83 is rotatably connected with a second outer convex ring 85, and the bottom of the second outer convex ring 85 is fixed to the docking tooth 91. A retardation groove is provided through the U-shaped placement frame 5 near the docking tooth 91.

[0044] In this embodiment, after the execution electric rod 81 is started, it can simultaneously drive the first sleeve bracket 82 and the second sleeve bracket 83 to move up and down. The first sleeve bracket 82 and the second sleeve bracket 83 have the same function, respectively pulling the first outer convex ring 84 and the second outer convex ring 85, and a ball bearing is provided between the first sleeve bracket 82 and the first outer convex ring 84 or the second sleeve bracket 83 and the second outer convex ring 85. It can be understood that when the first sleeve bracket 82 is pulling the first outer convex ring 84, the first outer convex ring 84 can also rotate normally inside the first sleeve bracket 82. In this way, when the execution electric rod 81 is started, the first outer convex ring 84 and the second outer convex ring 85 are simultaneously The first outer convex ring 84 drives the main tooth 73 to move downward at the upper end of the rotating shaft 72 until it is separated from the auxiliary tooth 74, and the docking tooth 91 fixed under the second outer convex ring 85 will move downward until it docks and meshes with the meshing tooth 92. In this way, the transmission effect of the transmission motor 71 will not drive the pull rod assembly 75 to descend to achieve clamping. Instead, the meshing effect of the docking tooth 91 and the meshing tooth 92 will drive the transmission tooth 93 to rotate normally. Since the upper and lower sides of the rotating shaft 72 are close to the main tooth 73 and the docking tooth 91, the docking tooth 91 and the main tooth 73 can meet the up and down movement while completing the rotation effect of following the rotating shaft 72.

[0045] refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 The bottom surface of the U-shaped mounting frame 5 is provided with a chuck drilling mechanism 9, which includes a docking tooth 91, a meshing tooth 92 and a transmission tooth 93. The transmission tooth 93 and the docking tooth 91 are respectively meshed on the left and right sides of the meshing tooth 92, and the meshing tooth 92 is rotated at the bottom of the U-shaped mounting frame 5 through the shaft rod. The axial position of the docking tooth 91 is penetrated and opened in a spline shape, and the docking tooth 91 is limitedly slidably connected with the limiting slide groove 86 at the bottom of the rotating shaft rod 72.

[0046] When the connecting teeth 91 drive the transmission teeth 93 to rotate under the U-shaped mounting frame 5 through the meshing teeth 92, the driving side plate 94 is directly fixed at the bottom of the transmission teeth 93, and the driving side plate 94 slides in the driving groove 95 provided under the rotating rod 752. In this way, the rotation of the driving side plate 94 will drive the rotating rod 752 to rotate as a whole through the driving groove 95. The rotating rod 752 is connected to the threaded rod 751 through the movable pin 753 at this time, and the connecting rod 98 at the top of the two sets of conical clamping blocks 97 is movably connected to the driving side plate 94. The dynamic connection effect is achieved by a rotational connection through the side plate and the axle pin, so only the relative swing between the two groups of conical clamping blocks 97 is satisfied. In this way, when the side plate 94 is driven to rotate, the two groups of conical clamping blocks 97 will also rotate synchronously, and the rotation of the rotating rod 752 can synchronously drive the conical clamping block 97 to rotate through the fitting effect of the wedge surface notch 96 and the conical clamping block 97, so that the transmission effect is more stable. The drill needle can rotate at this time, and cooperate with the lifting motor 4 on the top of the electric control platform 3 to drive the U-shaped mounting frame 5 to move downward as a whole, which is convenient for drilling and sampling biological samples in ultra-low temperature conditions.

[0047] refer to Figure 2 The transmission gear 93 is limited to rotate at the bottom of the U-shaped mounting frame 5, driving the side plates 94 in two groups, and the two groups of driving side plates 94 are respectively located on the left and right sides of the bottom of the rotating rod 752.

[0048] In this embodiment, the two sets of driving side plates 94 correspond to the driving effects of the two sets of driving grooves 95 that penetrate through the bottom of the rotating rod 752, so as to more stably drive the rotating rod 752 to rotate under the threaded rod 751.

[0049] Working principle: first, by starting the electric control platform 3 on the top of the base 1, the electric control platform 3 can rotate normally above the base 1, so as to drive the U-shaped mounting frame 5 to move to above the drill needle on the top of the ultra-low temperature sample platform 2, and then the lifting motor 4 on the top of the electric control platform 3 is started. Driven by the lifting motor 4, the U-shaped mounting frame 5 can move downward normally. Here, the connection between the lifting motor 4 and the U-shaped mounting frame 5 can be a transmission connection method of a threaded screw, so it will not be elaborated in detail. Then, the two groups of conical clamping blocks 97 at the bottom of the U-shaped mounting frame 5 can align the drill needle, and then the transmission motor 71 above the transmission frame 6 is started. At this time, the transmission motor 71 will normally drive the main gear 73 to rotate in the transmission frame 6 by rotating the shaft rod 72. One side of the main gear 73 engages with the auxiliary gear 74, and the surface of the auxiliary gear 74 is threaded with the threaded rod 751, and the top of the threaded rod 751 is limited to slide between the limit wheel 754 and the rail plate 755. In this way, after the auxiliary gear 74 rotates, the threaded rod 751 will move downward, thereby driving the rotating rod 752 to move downward synchronously;

[0050] When the rotating rod 752 moves downward, the wedge notch 96 at the bottom thereof will contact between the two groups of conical clamping blocks 97. Under the pushing effect, the two groups of conical clamping blocks 97 will swing in opposite directions through the movable connection relationship between the connecting rod 98 at the top and the driving side plate 94, until the two groups of conical clamping blocks 97 clamp the two sides of the drill needle respectively, and at the same time, the rotating rod 752 is also slidably connected with the driving side plate 94 through the driving slide groove 95 to ensure the basic movement effect;

[0051] After the clamping is completed, the execution electric rod 81 in the separation mechanism 8 on the inner side of the U-shaped mounting frame 5 is started, and the first sleeve bracket 82 will drive the first sleeve bracket 82 and the second sleeve bracket 83 to move downward at the same time. The first sleeve bracket 82 is movably connected to the bottom of the main tooth 73 through the first outer convex ring 84. During the pulling process, the main tooth 73 will be separated from the auxiliary tooth 74, and the second sleeve bracket 83 will drive the docking tooth 91 to move downward on the surface of the rotating shaft 72 through the second outer convex ring 85 until the docking tooth 91 The meshing teeth 92 on the bottom surface of the U-shaped mounting frame 5 are meshed with each other, and since the rotating shaft 72 is close to the docking teeth 91 and the main teeth 73, a limiting slot 86 is provided. Under the action of the limiting slot 86, when the transmission motor 71 drives the rotating shaft 72 to rotate again, the docking teeth 91 and the main teeth 73 will rotate again. At this time, the main teeth 73 and the auxiliary teeth 74 are separated, and the main teeth 73 are idle, while the docking teeth 91 directly drive the meshing teeth 92 to rotate, and the transmission teeth 93 meshing on one side of the meshing teeth 92 rotate, thereby realizing the belt The movable side plate 94 rotates at the bottom of the U-shaped mounting frame 5. At this time, the side plate 94 is driven to slide with the driving groove 95, so that the rotating rod 752 is directly rotated at the bottom of the threaded rod 751 through the movable pin 753. The rotating rod 752 can directly drive the cone clamping block 97 to rotate through the fitting relationship between the wedge surface notch 96 and the cone clamping block 97. On the other hand, the driving side plate 94 itself can also drive the cone clamping block 97 to rotate through the connection effect between the connecting rod 98 and the cone clamping block 97. The body rotates, thereby achieving a stable rotation effect of the drill needle, and the start-up of the lifting motor 4 on the top of the electric control platform 3 drives the U-shaped mounting frame 5 to move downward as a whole, so that the drill needle can sample the biological sample inside the ultra-low temperature sample platform 2. Finally, after the sampling is completed, the rising effect of the rotating rod 752 will loosen the two groups of conical clamping blocks 97 below, and the connecting rods 98 on the top of the two groups of conical clamping blocks 97 are elastically connected through the spring member 99. Under the elastic resistance, the two groups of conical clamping blocks 97 loosen the clamping of the drill needle.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultra-low temperature precision intelligent sampler, characterized in that: It comprises an ultra-low temperature sample platform (2) arranged on the top of a base (1), and a plurality of groups of drill needles are movably plugged on the surface of the ultra-low temperature sample platform (2). An electric control platform (3) is rotatably arranged on one side of the top of the base (1), and a U-shaped placement frame (5) is arranged on one side of the electric control platform (3) to move up and down through a lifting motor (4). A clamping mechanism (7) is arranged on the top of the U-shaped placement frame (5) through a transmission frame (6), and the clamping mechanism (7) comprises a transmission motor (71) and a pull rod assembly (75). The transmission motor (71) drives the pull rod assembly (75) to move up and down as a whole on one side of the U-shaped placement frame (5); Two groups of conical clamping blocks (97) are respectively arranged opposite to each other. The top of the conical clamping block (97) is rotatably arranged on the bottom of the driving side plate (94) through a connecting rod (98). The surface of the conical clamping block (97) is in the shape of an inclined plane. The pull rod assembly (75) drives the two groups of conical clamping blocks (97) to rotate oppositely and perform a clamping operation on the top of the drill needle. A separation mechanism (8) is provided at a position on the inner side of the U-shaped mounting frame (5) near the output shaft of the transmission motor (71), and the separation mechanism (8) drives the docking teeth (91) to engage with the meshing teeth (92) at the bottom of the U-shaped mounting frame (5), one side of the meshing teeth (92) is meshed with a transmission tooth (93), and the driving side plate (94) is fixed to the bottom of the transmission tooth (93). The transmission motor (71) drives the conical clamping block (97) and the drill bit to rotate below the U-shaped mounting frame (5) through the transmission tooth (93).

2. The ultra-low temperature precision intelligent sampler according to claim 1, characterized in that: The output shaft of the transmission motor (71) is fixedly connected to the rotating shaft (72), and the upper and lower surfaces of the rotating shaft (72) are respectively provided with limit sliding grooves (86), and the limit sliding groove (86) at the top of the rotating shaft (72) is slidably connected with a main tooth (73), and a secondary tooth (74) is meshed on one side of the main tooth (73), and the secondary tooth (74) is limitedly rotated in the transmission frame (6).

3. The ultra-low temperature precision intelligent sampler according to claim 1, characterized in that: The pull rod assembly (75) comprises a threaded rod (751) and a rotating rod (752); the rotating rod (752) is rotated at the bottom of the threaded rod (751) via a movable pin (753); the threaded rod (751) passes through the auxiliary tooth (74) and is threadedly connected to the auxiliary tooth (74); the top of the threaded rod (751) is fixedly connected to a limiting wheel (754); the top of the transmission frame (6) is fixedly connected to a rail plate (755) near the limiting wheel (754); and the limiting wheel (754) and the rail plate (755) are limitedly slidable.

4. The ultra-low temperature precision intelligent sampler according to claim 3, characterized in that: A wedge-shaped notch (96) is provided at the bottom of the rotating rod (752), a driving slide groove (95) is provided transversely through the rotating rod (752) at an upper position close to the wedge-shaped notch (96), and the rotating rod (752) movably passes through the U-shaped mounting frame (5) and the transmission gear (93).

5. The ultra-low temperature precision intelligent sampler according to claim 4, characterized in that: The rotating rod (752) drives the sliding groove (95) and the side plate below the side plate (94) to slide in a limited manner, the angles of the inclined surfaces of the wedge surface notches (96) and the surfaces of the conical clamping blocks (97) match each other, and the two groups of connecting rods (98) are elastically connected via spring members (99).

6. The ultra-low temperature precision intelligent sampler according to claim 1, characterized in that: The separation mechanism (8) comprises a first sleeve bracket (82) and a second sleeve bracket (83); the top of the second sleeve bracket (83) is fixed to the bottom of the first sleeve bracket (82) through a connecting plate; one side of the first sleeve bracket (82) is fixed to the output end of an actuator electric rod (81) through a connecting plate; the actuator electric rod (81) drives the first sleeve bracket (82) and the second sleeve bracket (83) to move up and down on the surface of the rotating shaft (72).

7. The ultra-low temperature precision intelligent sampler according to claim 6, characterized in that: A first outer convex ring (84) is rotatably connected inside the first sleeve support (82), and the first outer convex ring (84) is fixed to the bottom of the main tooth (73). A second outer convex ring (85) is rotatably connected inside the second sleeve support (83), and the bottom of the second outer convex ring (85) is fixed to the docking tooth (91). A retention groove is provided through the U-shaped mounting frame (5) near the docking tooth (91).

8. The ultra-low temperature precision intelligent sampler according to claim 1, characterized in that: The bottom surface of the U-shaped mounting frame (5) is provided with a chuck rotary drilling mechanism (9), the chuck rotary drilling mechanism (9) comprises a docking tooth (91), a meshing tooth (92) and a transmission tooth (93), the transmission tooth (93) and the docking tooth (91) are respectively meshed on the left and right sides of the meshing tooth (92), and the meshing tooth (92) is rotated at the bottom of the U-shaped mounting frame (5) through a shaft rod.

9. The ultra-low temperature precision intelligent sampler according to claim 8, characterized in that: The axle center position of the docking tooth (91) is penetrated and opened in a spline shape, and the docking tooth (91) is connected to the limiting sliding groove (86) at the bottom of the rotating shaft (72) in a limiting sliding manner.

10. The ultra-low temperature precision intelligent sampler according to claim 8, characterized in that: The transmission gear (93) is limitedly rotated at the bottom of the U-shaped mounting frame (5), driving two groups of side plates (94), and the two groups of driving side plates (94) are respectively located on the left and right sides of the bottom of the rotating rod (752).

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