Clamping mechanism of sample analysis system and sample analysis system

Abstract

The invention relates to a clamping mechanism of a sample analysis system and the sample analysis system. The clamping mechanism comprises a first driving assembly, a clamping assembly and a first position obtaining assembly. The clamping assembly is arranged at the execution tail end of the first driving assembly, and the first driving assembly can drive the clamping assembly to rotate around the axis of the target piece so as to conduct position calibration operation or reset operation; the first position obtaining assembly is arranged at the end, connected with the execution tail end, of the clamping assembly and can obtain the rotating position of the clamping assembly relative to the axis of the target piece when the clamping assembly conducts position calibration operation or reset operation. The clamping assembly can conduct clamping operation on a target piece. According to the clamping mechanism, the first position obtaining assembly is arranged at the execution tail end of the first driving assembly, so that detection errors caused by transmission of a transmission structure of the first driving assembly can be avoided, and clamping fingers of the clamping assembly are prevented from colliding with a sample tube.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a clamping mechanism of a sample analysis system and a sample analysis system. Background Art

[0002] In the field of laboratory automation production lines, a clamping mechanism is usually used to transfer sample tubes to a sample tray for detection by a detection instrument. The clamping mechanism is usually equipped with a rotating structure, so that each clamping finger on the clamping mechanism can rotate to a suitable position, and then can extend into the gap between adjacent sample tubes in the sample rack to grab the sample tube.

[0003] Traditional rotating structures usually use motors with encoders to determine the rotational position of the clamping mechanism. However, the rotating structure also has one or more reduction mechanisms, which may result in transmission errors. Under the premise of normal operation of the encoder, the rotation angle of the clamping mechanism may deviate to a certain extent, causing the clamping fingers of the clamping mechanism to collide with the sample tube, resulting in damage to the sample tube, which causes great trouble to customers. Summary of the invention

[0004] Based on this, it is necessary to provide a clamping mechanism of a sample analysis system and a sample analysis system to address the above technical issues.

[0005] A clamping mechanism of a sample analysis system, comprising:

[0006] a first drive assembly;

[0007] A gripping assembly, disposed at the execution end of the first driving assembly, the first driving assembly being capable of driving the gripping assembly to rotate around the axis of the target part to perform a position calibration operation or a reset operation; and

[0008] The first position acquisition component is arranged at one end of the clamping component connected to the execution end, and can obtain the rotational position of the clamping component relative to the axis of the target part when the clamping component performs a position calibration operation or a reset operation. When the first position acquisition module detects that the clamping component rotates to a preset position, the clamping component can clamp the target part.

[0009] In one embodiment, the first position acquisition component includes a first code disk and a first sensing element. The first code disk is mounted outside the clamping component and rotates synchronously with the clamping component. The first sensing element is fixed to the outer peripheral side of the first code disk and can cooperate with the first code disk to obtain the rotational position of the clamping component.

[0010] In one embodiment, the outer edge of the first code disk is provided with a plurality of notch portions and a plurality of non-notch portions, and the notch portions and the non-notch portions are alternately arranged along the circumference of the first code disk;

[0011] The first sensing element has a transmitting end and a receiving end that are arranged opposite to each other. When the notch portion or the non-notch portion rotates to between the transmitting end and the receiving end, the first sensing element can generate a first signal, wherein the first signal is used to determine the rotation position.

[0012] In one embodiment, the first sensing element is a photoelectric sensor or a Hall sensor.

[0013] In one embodiment, the first drive assembly includes a rotary motor;

[0014] The clamping mechanism also includes a control component, which is used to obtain the motor steps of the rotating motor between two adjacent notch portions or two adjacent non-notch portions, and determine whether the clamping component is stuck during rotation based on the motor steps.

[0015] In one embodiment, the clamping assembly includes a plurality of clamping fingers and a rotatable rotating shaft; the rotating shaft is arranged on the execution end of the first driving assembly and is connected to the first position acquisition assembly; the plurality of clamping fingers are arranged along the circumference of the rotating shaft and are rotatably connected to the bottom of the rotating shaft so as to be expanded or folded.

[0016] In one embodiment, the first driving component includes a rotating power member and a first transmission member, the first transmission member includes a driving wheel arranged on the output end of the rotating power member and a driven wheel arranged on the outer circumference of the rotating shaft, and the driving wheel is connected to the driven wheel through a transmission part.

[0017] In one embodiment, the clamping mechanism also includes a second drive component, the execution end of the second drive component extends into the rotating shaft and cooperates with the clamping fingers, so that the execution end of the second drive component can drive the clamping fingers to expand or retract when moving axially along the rotating shaft.

[0018] In one embodiment, the second driving assembly includes a clamping power member and a plurality of clamping push blocks, wherein the clamping push blocks are arranged in the rotating shaft at circumferential intervals along the rotating shaft and can move synchronously with the output end of the clamping power member or the rotating shaft, and the clamping push blocks have strip holes, and the side of the clamping fingers close to the clamping power member extends into the corresponding strip hole and can rotate relative to the rotating shaft when the corresponding clamping push blocks move.

[0019] A sample analysis system, comprising an analyzer and a clamping mechanism as described in any one of the above items;

[0020] The clamping mechanism is used to transfer the target part to the analyzer so that the analyzer can analyze the sample in the target part.

[0021] The clamping mechanism and sample analysis system of the above-mentioned sample analysis system can avoid the detection error caused by the transmission of the transmission structure of the first drive component by arranging the first position acquisition component at the execution end of the first drive component, and can accurately determine the rotational position of the clamping fingers of the clamping component relative to the axis of the sample tube, thereby preventing the clamping fingers of the clamping component from colliding with the sample tube, thereby ensuring the safety of the sample in the sample tube; and, the position calibration operation and the reset operation of the clamping component share the first position acquisition component, which can reduce the number of first position acquisition components used and reduce the cost of the clamping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a schematic diagram of placing a conventional sample tube on a sample rack.

[0023] FIG. 2 is a schematic diagram of the three-dimensional structure of a clamping mechanism provided in an embodiment of the present application.

[0024] FIG. 3 is a schematic diagram of the three-dimensional structure of the first position acquisition component of the clamping mechanism provided in FIG. 2 .

[0025] FIG. 4 is a schematic diagram of the process flow of the clamping mechanism provided in FIG. 2 during operation.

[0026] The reference numerals in the accompanying drawings are described as follows:

[0027] 10. Clamping mechanism; 100. First driving component; 110. Rotating power member; 120. First transmission member; 121. Driving wheel; 122. Driven wheel; 123. Transmission part; 200. Clamping component; 210. Clamping finger; 220. Rotating axis; 300. First position acquisition component; 310. First code disk; 311. Notch part; 312. Non-notch part; 320. First sensing element; 400. Second driving component; 410. Clamping power member; 420. Clamping push block; 420a. Strip hole; 500. Mounting seat; 600. Mounting frame; 700. Second position acquisition component; 710. Second code disk; 720. Second sensing element; 20. Sample tube; 30. Sample rack; Q. Gap. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0034] A sample tube is a container used to store and transport biological samples. It is usually made of medical-grade plastic and is widely used in laboratories. It can be used to store various types of biological samples, including saliva, blood, feces, urine, sputum, viruses, etc.

[0035] When performing biochemical analysis or immunoassay, the collected sample tubes are usually placed in the sample rack first, and then the sample tubes are transferred to the sample tray by a clamping mechanism for the analyzer to perform the corresponding analysis. As shown in FIG1 , the sample tubes 20 are usually placed in a matrix on the sample rack 30, so that a gap Q is surrounded between each four adjacent sample tubes 20. For this purpose, the clamping mechanism 10 is usually equipped with a rotating structure, so that each clamping finger on the clamping mechanism 10 can be rotated to a suitable position, and then can be extended into the gap Q between adjacent sample tubes 20 in the sample rack 30 to grab the sample tube 20, which can prevent the clamping finger of the clamping mechanism from colliding with the sample tube 20.

[0036] However, traditional rotating structures usually use motors with encoders to determine the rotational position of the clamping mechanism. However, the rotating structure also has one or more reduction mechanisms, which may result in transmission errors. Under the premise of normal operation of the encoder, the rotation angle of the clamping mechanism may deviate to a certain extent, causing the clamping fingers of the clamping mechanism to collide with the sample tube, resulting in damage to the sample tube, which causes great trouble to customers.

[0037] In this regard, as shown in FIG2 , an embodiment of the present application provides a clamping mechanism 10 of a sample analysis system, which can transfer a sample tube 20 on a sample rack 30 to a sample disk. Of course, the clamping mechanism 10 can also transfer other sample containers to corresponding analysis containers.

[0038] As shown in FIG2 , the clamping mechanism 10 includes a mounting seat 500, a driving module, a clamping assembly 200, and a first position acquisition assembly 300. The mounting seat 500 serves as a supporting structure of the entire clamping mechanism 10 and plays a role in mounting the driving module, the clamping assembly 200, and the first position acquisition assembly 300. The mounting seat 500 can be set as a frame structure or a plate structure as required, and this application does not impose any specific restrictions.

[0039] The driving module is the power structure of the entire clamping mechanism 10, and mainly provides power to the clamping assembly 200, so that the clamping assembly 200 can perform corresponding actions. As shown in FIG. 2 , the driving assembly includes a first driving assembly 100 and a second driving assembly 400, both of which are arranged on a mounting seat 500. The first driving assembly 100 and the second driving assembly 400 both have an execution end, which refers to the end of the power output.

[0040] The clamping assembly 200 is a structure for clamping the sample tube 20, which can clamp the sample tube 20 and is disposed at the execution end of the first driving assembly 100. The first driving assembly 100 can drive the clamping assembly 200 to rotate around the axis of the target part to perform a position calibration operation or a reset operation, and the second driving assembly 400 can drive the clamping assembly 200 to clamp the target part to achieve clamping of the sample tube 20. It should be noted that the target part may refer to the sample tube 20 mentioned above.

[0041] Optionally, as shown in FIG2 , the gripping assembly 200 may include a plurality of gripping fingers 210 and a rotatable rotating shaft 220; the rotating shaft 220 is rotatably disposed on the mounting seat 500 and disposed on the execution end of the first driving assembly 100, and the plurality of gripping fingers 210 are arranged along the circumference of the rotating shaft 220 and are rotatably connected to the bottom of the rotating shaft 220 to be expanded or retracted. Optionally, the rotating shaft 220 is rotatably disposed on the mounting seat 500 via a bearing.

[0042] The number of the clamping fingers 210 can be set accordingly according to the arrangement of the sample tubes 20 on the sample rack 30. For example, as shown in FIG1 , when the sample tubes 20 are arranged in a matrix on the sample rack 30, four gaps Q can be evenly formed around the axis of the sample tube 20 and the four adjacent sample tubes 20. In this regard, as shown in FIG2 , four clamping fingers 210 evenly arranged along the circumference of the rotating shaft 220 can be set on the clamping assembly 200.

[0043] When the first drive assembly 100 receives the instruction to clamp the sample tube 20, it drives the clamping assembly 200 to rotate around the axis of the sample tube 20, so that each clamping finger 210 on the clamping mechanism 10 can extend into the gap Q corresponding to the adjacent sample tube 20 in the sample rack 30 to grab the sample tube 20. The entire operation process can be called a position calibration operation process. After that, the second drive assembly 400 drives the clamping assembly 200 to clamp the sample tube 20. The entire operation process can be called a clamping operation process. After the sample tube 20 is transferred to the sample tray, the first drive assembly 100 drives the clamping assembly 200 to rotate to the initial position to facilitate the clamping of the next sample tube 20. The entire operation process can be called a reset operation process.

[0044] The first position acquisition component 300 serves as the positioning structure of the entire clamping mechanism 10. It is arranged at one end of the rotating shaft 220 of the clamping component 200 that is connected to the execution end of the first driving component 100. It can obtain the rotational position of the clamping component 200 relative to the axis of the target part when the clamping component 200 performs a position calibration operation or a reset operation. When the first position acquisition module 300 detects that the clamping component 200 rotates to a preset position, the clamping component 200 can clamp the sample tube 20 under the drive of the second driving component 400. The first position acquisition component 300 is arranged at the execution end of the first driving component 100, so as to avoid the detection error caused by the transmission of the transmission structure of the first driving component 100, and can accurately determine the rotation position of the clamping finger 210 of the clamping component 200 relative to the axis of the sample tube, thereby preventing the clamping finger 210 of the clamping component 200 from colliding with the sample tube, thereby ensuring the safety of the sample; moreover, the position calibration operation and the reset operation of the clamping component 200 share the first position acquisition component 300, thereby reducing the number of the first position acquisition component 300 used and reducing the cost of the clamping mechanism 10.

[0045] As shown in FIG3 , in some embodiments of the present application, the first position acquisition component 300 includes a first code disk 310 and a first sensing element 320. The first code disk 310 is sleeved on the outside of the rotating shaft 220 of the clamping component 200 and can rotate synchronously with the rotating shaft 220 of the clamping component 200. The first sensing element 320 is fixed to the outer peripheral side of the first code disk 310 and can cooperate with the first code disk 310 to obtain the rotation position of the clamping component 200. The first code disk 310 can rotate synchronously with the clamping component 200, and the first sensing element 320 can be used to obtain the position of the first code disk 310 relative to the axis of the sample tube 20 to determine the position of the clamping component 200 relative to the axis of the sample tube 20. The structure of the first position acquisition component 300 is simple.

[0046] Further, as shown in FIG3 , the outer edge of the first code disk 310 is provided with a plurality of notch portions 311 and a plurality of non-notch portions 312, and the notch portions 311 and the non-notch portions 312 are alternately arranged along the circumference of the first code disk 310; the first sensing element 320 has a transmitting end and a receiving end that are relatively arranged, and when the notch portion 311 or the non-notch portion 312 rotates to between the transmitting end and the receiving end, the first sensing element 320 can generate a first signal, wherein the first signal is used to determine the rotation position. When the notch portion 311 or the non-notch portion 312 of the first code disk 310 rotates to between the transmitting end and the receiving end of the first sensing element 320, the first sensing element 320 is not blocked or blocked, and at this time, it can be determined that the clamping component 200 is rotated into place, so that the position calibration operation or reset operation of the clamping component 200 can be completed; otherwise, it is determined that the clamping component 200 is not rotated into place.

[0047] The number of the notch portions 311 can be set accordingly according to the situation of the clamping fingers 210. For example, when the clamping assembly 200 is evenly provided with 4 clamping fingers 210 along the circumference of the first code disk 310, as shown in FIG3, the notch portions 311 are also evenly provided with 4 corresponding notch portions 311 along the circumference of the first code disk 310. It can be understood that the number and distribution of the non-notch portions 312 and the notch portions 311 are the same as those of the notch portions 311. In addition, the circumferential width of the notch portions 311 or the non-notch portions 311 along the first code disk 310 can be adjusted accordingly according to the detection accuracy.

[0048] Optionally, the first sensing element 320 is a photoelectric sensor (eg, a zero-point optical coupler) or a Hall sensor.

[0049] Optionally, as shown in FIG2 , the clamping mechanism 10 further includes a mounting frame 600, the mounting frame 600 is disposed on the mounting seat 500, and the first sensing element 320 is disposed on the mounting frame 600. Optionally, the mounting frame 600 includes a first mounting portion and a second mounting portion vertically connected, the first mounting portion can be connected to the mounting seat 500 by screw connection, welding, clamping, etc., and the second mounting portion can be connected to the first sensing element 320 by screw connection, welding, clamping, etc.

[0050] As shown in FIG. 2 , in some embodiments of the present application, the first driving assembly 100 includes a rotating power member 110 and a first transmission member 120; the rotating power member 110 is disposed on the mounting seat 500; the first transmission member 120 includes a driving wheel 121 disposed on the output end of the rotating power member 110 and a driven wheel 122 disposed on the outer circumference of the rotating shaft 220, and the driving wheel 121 is connected to the driven wheel 122 through a transmission part 123. When the output end of the rotating power member 110 rotates, the driving wheel 121 also rotates, and then drives the driven wheel 122 to rotate through the transmission part 123, thereby causing the rotating shaft 220 of the clamping assembly 200 to rotate.

[0051] Among them, the rotating power part 110 can be a rotating motor. Optionally, the clamping mechanism 10 also includes a control component, which is used to obtain the motor steps of the rotating motor between two adjacent notches 311 or two adjacent non-notches 312 in the first code disk 310, and judge whether the clamping component 200 is stuck during rotation based on the motor steps. When the clamping component 200 rotates smoothly, the motor steps of the rotating motor between two adjacent notches 311 or two adjacent non-notches 312 in the first code disk 310 are K1; and when the clamping component 200 rotates unsmoothly, the motor steps of the rotating motor between two adjacent notches 311 or two adjacent non-notches 312 in the first code disk 310 are K2, then K2>K1, and whether the clamping component 200 is stuck during rotation can be judged based on the number of motor steps. As shown in Figure 4, when the first drive component 100 receives the tube grasping and releasing instruction, it drives the clamping component 200 to rotate at a preset angle, and then the control component determines whether the rotation of the clamping component 200 is stuck. If so, an error is reported that the rotation of the clamping component 200 is stuck; if not, the first position acquisition component 300 determines whether the clamping finger 210 of the clamping component 200 is rotated into place. If not, an error is reported that the angle of the clamping finger 210 is abnormal. If in place, the second drive component 400 drives the clamping finger 210 of the clamping component 200 to grasp or release the sample tube 20.

[0052] Optionally, the transmission part 123 is a transmission gear or a conveyor belt as shown in FIG. 2 .

[0053] As shown in FIG. 2 , in some embodiments of the present application, the execution end of the second driving component 400 extends into the rotating shaft 220 and cooperates with the clamping fingers 210, so that the execution end of the second driving component 400 can drive the clamping fingers 210 to expand or retract when moving along the axial direction of the rotating shaft 220. When the clamping component 200 is rotated into place, the execution end of the second driving component 400 moves along the axial direction of the rotating shaft 220 to drive the clamping fingers 210 to expand or retract, thereby grabbing or releasing the sample tube 20.

[0054] Further, as shown in FIG. 2 , the second driving assembly 400 includes a clamping power member 410 and a plurality of clamping push blocks 420; the clamping power member 410 is disposed on the mounting seat 500; the clamping push blocks 420 are disposed in the rotating shaft 220 at intervals along the circumference of the rotating shaft 220 and can move synchronously with the output end of the clamping power member 410 or the rotating shaft 220, and the clamping push blocks 420 have bar holes 420a, and the side of the clamping finger 210 close to the clamping power member 410 extends into the corresponding bar hole 420a and can rotate relative to the rotating shaft 220 when the corresponding clamping push block 420 moves. When the clamping push block 420 moves along the axial direction of the rotating shaft 220, the side of the clamping finger 210 close to the clamping power member 410 can rotate relative to the rotating shaft 220 under the limitation of the corresponding obliquely disposed bar hole 420a, so as to be expanded or retracted. The second driving assembly 400 of this structure is simple in structure, which can simplify the structure of the entire clamping structure.

[0055] Optionally, the clamping power member 410 may be a clamping motor with a lead screw nut structure at the output end. When the output end of the clamping motor rotates, the lead screw nut structure may convert the rotational motion of the output end of the clamping motor into a linear motion, thereby causing the clamping push block 420 to perform a linear motion along the axial direction of the rotating shaft 220. The mounting seat 500 has a through hole for the lead screw nut structure to pass through.

[0056] Optionally, the outer circumference of the screw nut structure is provided with a first stopper and a second stopper at intervals along the axial direction of the rotating shaft 220, and the connection of the plurality of clamping push blocks 420 is sleeved on the outer circumference of the screw nut structure and located between the first stopper and the second stopper. In this way, the clamping push block 420 can move linearly synchronously with the screw nut structure at the output end of the clamping power member 410 or rotate synchronously with the rotating shaft 220.

[0057] Optionally, a roller is provided on one side of the clamping finger 210 close to the clamping power member 410, and the roller can move in the corresponding strip hole 420a. In this way, the expansion or contraction of the clamping finger 210 can be smoother.

[0058] Regarding the number of clamping push blocks 420, it can be set accordingly according to the situation of the clamping fingers 210. For example, when the clamping assembly 200 is evenly provided with 4 clamping fingers 210 along the circumference of the first code disk 310, 4 clamping push blocks 420 are also correspondingly evenly provided along the circumference of the first code disk 310.

[0059] 2 , in some embodiments of the present application, the clamping mechanism 10 further includes a second position acquisition component 700, which can acquire the position of the lead screw nut structure of the second drive component 400 in the axial direction along the rotation axis 220. In this way, it can be determined whether the clamping component 200 has clamped or released the sample tube 20 in place according to the position of the lead screw nut structure of the second drive component 400 in the axial direction along the rotation axis 220.

[0060] Optionally, as shown in FIG2 , the second position acquisition component 700 includes a second code disk 710 and a second sensing element 720. The second code disk 710 is arranged around the rotating shaft 220 and connected to the lead screw nut structure. The second sensing element 720 is mounted on the mounting frame 600 and has a transmitting end and a receiving end arranged oppositely. When the second code disk 710 extends between the transmitting end and the receiving end, the second sensing element 720 can generate a second signal, wherein the second signal is used to determine the position of the lead screw nut structure of the second driving component 400 along the axial direction of the rotating shaft 220. When the second sensing element 720 senses the second code disk 710 (i.e., is blocked by the second code disk 710), the second signal is generated, and it can be determined that the clamping component has not clamped or released the sample tube 20 in place; otherwise, it is determined that the clamping component has clamped or released the sample tube 20 in place.

[0061] Optionally, the mounting bracket 600 further includes a third mounting portion vertically connected to the second mounting portion, and the third mounting portion is connected to the second sensing element 720 by welding, screw connection, clamping, or the like.

[0062] Optionally, the second sensing element 720 is a photoelectric sensor (eg, a zero-point optical coupler) or a Hall sensor.

[0063] On the other hand, an embodiment of the present application further provides a sample analysis system, which includes an analyzer and a clamping mechanism 10 as described in any one of the above items; the clamping mechanism 10 is used to transfer the target part to the analyzer so that the analyzer can detect the sample in the target part.

[0064] Alternatively, the analyzer may be a biochemical analyzer or an immunoassay analyzer.

[0065] The sample analysis system as described above can avoid detection errors caused by the transmission of the transmission structure of the first driving component 100 by setting the first position acquisition component 300 of the clamping mechanism 10 at the execution end of the first driving component 100, and can accurately determine the rotational position of the clamping finger 210 of the clamping component 200 relative to the axis of the sample tube, thereby preventing the clamping finger 210 of the clamping component 200 from colliding with the sample tube, thereby ensuring the safety of the sample; and, the position calibration operation and the reset operation of the clamping component 200 share the first position acquisition component 300, thereby reducing the number of first position acquisition components 300 used and reducing the cost of the clamping mechanism 10.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A clamping mechanism for a sample analysis system, characterized in that: include: a first drive assembly; A gripping assembly, disposed at the execution end of the first driving assembly, the first driving assembly being capable of driving the gripping assembly to rotate around the axis of the target part to perform a position calibration operation or a reset operation; as well as The first position acquisition component is arranged at one end of the clamping component connected to the execution end, and can obtain the rotational position of the clamping component relative to the axis of the target part when the clamping component performs a position calibration operation or a reset operation. When the first position acquisition module detects that the clamping component rotates to a preset position, the clamping component can clamp the target part.

2. The clamping mechanism according to claim 1, characterized in that: The first position acquisition component includes a first code disk and a first sensing element. The first code disk is mounted outside the clamping component and rotates synchronously with the clamping component. The first sensing element is fixed to the outer peripheral side of the first code disk and can cooperate with the first code disk to obtain the rotational position of the clamping component.

3. The clamping mechanism according to claim 2, characterized in that: The outer edge of the first code disk is provided with a plurality of notch portions and a plurality of non-notch portions, and the notch portions and the non-notch portions are alternately arranged along the circumference of the first code disk; The first sensing element has a transmitting end and a receiving end that are arranged opposite to each other. When the notch portion or the non-notch portion rotates to between the transmitting end and the receiving end, the first sensing element can generate a first signal, wherein the first signal is used to determine the rotation position.

4. The clamping mechanism according to claim 3, characterized in that: The first sensing element is a photoelectric sensor or a Hall sensor.

5. The clamping mechanism according to claim 3, characterized in that: The first drive assembly includes a rotating motor; The clamping mechanism also includes a control component, which is used to obtain the motor steps of the rotating motor between two adjacent notch portions or two adjacent non-notch portions, and determine whether the clamping component is stuck during rotation based on the motor steps.

6. The clamping mechanism according to any one of claims 1 to 5, characterized in that: The clamping assembly includes a plurality of clamping fingers and a rotatable rotating shaft; the rotating shaft is arranged on the execution end of the first driving assembly and connected to the first position acquisition assembly; the plurality of clamping fingers are arranged along the circumference of the rotating shaft and are rotatably connected to the bottom of the rotating shaft so as to be expanded or folded.

7. The clamping mechanism according to claim 6, characterized in that: The first driving assembly includes a rotating power member and a first transmission member, wherein the first transmission member includes a driving wheel arranged on the output end of the rotating power member and a driven wheel arranged on the outer peripheral surface of the rotating shaft, and the driving wheel is connected to the driven wheel through a transmission part.

8. The clamping mechanism according to claim 6, characterized in that: The clamping mechanism also includes a second drive assembly, the execution end of which extends into the rotating shaft and cooperates with the clamping fingers, so that the execution end of the second drive assembly can drive the clamping fingers to expand or retract when moving axially along the rotating shaft.

9. The clamping mechanism according to claim 8, characterized in that: The second driving assembly includes a clamping power member and a plurality of clamping push blocks, wherein the clamping push blocks are arranged in the rotating shaft at circumferential intervals along the rotating shaft and can move synchronously with the output end of the clamping power member or the rotating shaft, and the clamping push blocks have strip holes, and the side of the clamping fingers close to the clamping power member extends into the corresponding strip hole and can rotate relative to the rotating shaft when the corresponding clamping push blocks move.

10. A sample analysis system, characterized in that: comprising an analyzer and a clamping mechanism as claimed in any one of claims 1 to 9; The clamping mechanism is used to transfer the target part to the analyzer so that the analyzer can analyze the sample in the target part.

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