CN217879244U

CN217879244U - Sampling mechanism and sample analyzer

Info

Publication number: CN217879244U
Application number: CN202221281556.9U
Authority: CN
Inventors: 易奇浩; 蒋庭彦
Original assignee: Shenzhen Dymind Biotechnology Co Ltd
Current assignee: Shenzhen Dymind Biotechnology Co Ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-11-22
Anticipated expiration: 2032-05-24

Abstract

The application discloses a sample introduction mechanism and a sample analyzer, wherein the sample introduction mechanism comprises a base, a pushing assembly, a driving motor and a rotating crank; the pushing assembly is supported on the base in a sliding mode along the vertical direction and is provided with a transmission groove; the driving motor and the base are relatively fixed; the rotating crank is connected with an output shaft of the driving motor, and is provided with a transmission handle eccentrically arranged with the output shaft, the transmission handle is arranged in the transmission groove in a penetrating manner, and then the driving motor drives the rotating crank to rotate, so that the pushing assembly is pushed to reciprocate along the vertical direction, and the sample frame is pushed to realize sample introduction. The sample introduction mechanism pushes the sample frame in a crank transmission mode, the structure is compact, the transmission space is small, the size of the sample introduction mechanism can be reduced, and the sample analyzer is favorably miniaturized.

Description

Sampling mechanism and sample analyzer

Technical Field

The application relates to the technical field of medical instruments, in particular to a sample introduction mechanism and a sample analyzer.

Background

In the field of medical instruments, a sample analyzer is a common in vitro diagnostic and analytical instrument, which is generally used for detecting and analyzing samples and is a conventional device for hospital examination. In which the sample analyzer is usually provided with a sample introduction mechanism to transfer the sample rack into a transport mechanism of the sample analyzer.

In current sampling mechanism, use synchronous belt drive's mode to promote the sample frame to conveying mechanism in usually, to the less sampling mechanism of some loading capacity, synchronous belt drive can occupy a large amount of spaces, therefore sampling mechanism is bulky, is unfavorable for realizing sample analyzer's miniaturization.

SUMMERY OF THE UTILITY MODEL

The application provides a kind mechanism and sample analyzer to solve the bulky technical problem of kind mechanism among the prior art.

In order to solve the above problem, the present application provides a first technical solution: the sample feeding mechanism of the sample analyzer comprises a base, a pushing assembly, a driving motor and a rotating crank; the pushing assembly is supported on the base in a sliding mode along the vertical direction and is provided with a transmission groove; the driving motor and the base are relatively fixed; the rotary crank with driving motor's output shaft to be provided with the transmission handle of output shaft eccentric settings, the transmission handle is worn to locate in the transmission groove, and then driving motor drives rotary crank carries out pivoted in-process and promotes the subassembly is followed vertical direction reciprocating motion to promote the sample frame and realize advancing the appearance.

Wherein, the sampling mechanism further comprises a bearing which is rotatably supported on the transmission handle, and the bearing is arranged in the transmission groove in a penetrating way.

The base comprises a first base plate and two second base plates, wherein the first base plate is provided with a supporting surface for placing the sample rack; the two second substrates are connected with the first substrate and extend towards the same side of the first substrate, the surfaces of the two second substrates are arranged at intervals, the pushing assembly is slidably supported on the first substrate, and the driving motor is arranged between the two second substrates.

The base further comprises a guide rail arranged on one side of the first base plate, which is far away from the second base plate, and the sliding block is slidably supported on the guide rail and connected with the rotating crank.

The sliding block comprises a sliding block body and an extending portion, the sliding block body is slidably supported on the guide rail, the extending portion is connected with the sliding block body and extends to the outer side of the second base plate provided with the through hole, the transmission groove is formed in the extending portion, the rotating crank is located on the outer side of the second base plate provided with the through hole, and the push plate is fixed on the sliding block body and used for contacting the sample frame.

Wherein, the sampling mechanism includes position sensor, set up in the base is used for detecting the position of push pedal.

Wherein, the position sensor is an optical coupling detector.

In order to solve the above problems, the present application provides a second technical solution: providing a sample analyzer comprising a transport mechanism, a sample introduction mechanism and an unloading mechanism as described above; the conveying mechanism is used for conveying the sample rack loaded on the conveying mechanism to a sampling position; the sample feeding mechanism is used for loading the sample rack placed in the sample loading area to the conveying mechanism; the unloading mechanism is used for unloading the sample rack from the conveying mechanism.

Wherein, the sampling mechanism with the sample loading area is located in the lateral direction of the conveying mechanism, and the sampling mechanism pushes the sample rack into the conveying mechanism in a crank transmission mode along the vertical direction of the conveying mechanism.

Wherein, conveying mechanism includes the conveyer belt and follows the direction of delivery interval set up in a plurality of fixture blocks on the conveyer belt, advance kind mechanism will the sample frame pushes into to adjacent two between the fixture block.

Wherein the sample analyzer further comprises a sampling mechanism for collecting samples of the sample rack located at the sampling location.

The application provides a sample introduction mechanism and a sample analyzer, wherein the sample introduction mechanism comprises a base, a pushing assembly, a driving motor and a rotating crank; the pushing assembly is supported on the base in a sliding mode along the vertical direction and is provided with a transmission groove; the driving motor and the base are relatively fixed; the rotating crank is connected with an output shaft of the driving motor, and is provided with a transmission handle eccentrically arranged with the output shaft, the transmission handle is arranged in the transmission groove in a penetrating mode, and then the driving motor drives the rotating crank to rotate, so that the pushing assembly is pushed to reciprocate along the vertical direction, and the sample frame is pushed to realize sample introduction. The sample introduction mechanism pushes the sample frame in a crank transmission mode, is compact in structure and small in transmission space, can reduce the size of the sample introduction mechanism, and is favorable for realizing miniaturization of a sample analyzer.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a block diagram of an embodiment of a sample injection mechanism provided herein;

FIG. 2 is a side view of one embodiment of a sample injection mechanism provided herein;

FIG. 3 is a schematic view of the structure of the rotary crank of FIG. 1;

FIG. 4 is a schematic view of the slider structure of FIG. 1;

FIG. 5 is a schematic block diagram of one embodiment of a sample analyzer provided herein;

fig. 6 is a schematic structural view of the conveying mechanism in fig. 5.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "are provided," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

This application has at first proposed a kind mechanism of sample analyzer, and this kind mechanism of advancing is applied to medical treatment or biochemical analysis field for carry out the autoinjection to the sample frame of placing the sample test tube in sample analyzer. A more common sample analyzer may be an immunoassay analyzer; the sample analyzer may also be other clinical laboratory equipment.

Referring to fig. 1-2, fig. 1 is a structural diagram of an embodiment of a sample injection mechanism provided in the present application, fig. 2 is a side view of the embodiment of the sample injection mechanism provided in the present application, and fig. 3 is a schematic structural diagram of a rotating crank in fig. 1. As shown in fig. 1-3, the sample injection mechanism 20 includes a base 220, a pushing assembly 250, a drive motor 230, and a rotary crank 240.

The pushing assembly 250 is supported on the base 220 in a sliding manner along the vertical direction and is provided with a transmission groove 263; the driving motor 230 is kept relatively fixed with respect to the base 220; the rotating crank 240 is connected to the output shaft of the driving motor 230, and is provided with a transmission handle 241 eccentrically disposed with the output shaft, the transmission handle 241 penetrates through the transmission groove 263, so as to push the pushing assembly 250 to reciprocate along the vertical direction in the process that the driving motor 230 drives the rotating crank 240 to rotate, and push the sample rack.

Specifically, the base 220 of the sample injection mechanism 20 is used for mounting the pushing assembly 250, the driving motor 230 and the rotating crank 240; the driving motor 230 is used for providing power to drive the rotating crank 240 to rotate; the pushing assembly 250 is used to push the sample rack. The driving motor 230 is relatively fixed to the base 220, and an output shaft of the driving motor 230 is connected to the rotary crank 240. The rotating crank 240 is provided with a transmission handle 241 eccentrically arranged with the output shaft, the pushing component 250 is provided with a transmission groove 263, and the transmission handle 241 penetrates through the transmission groove 263, so that in the process that the driving motor 230 drives the rotating crank 240 to rotate, the transmission handle 241 pushes the pushing component 250 to reciprocate along the vertical direction, thereby pushing the sample rack to realize sample introduction.

In this embodiment, the rotating crank 240 of the sample feeding mechanism 20 is provided with a transmission handle 241 eccentrically disposed with the output shaft, the pushing assembly 250 is provided with a transmission groove 263, the transmission handle 241 penetrates through the transmission groove 263, and then the driving motor 230 drives the rotating crank 240 to rotate, so as to push the pushing assembly 250 to reciprocate along the vertical direction, thereby pushing the sample rack. Different from the prior art, the sample injection mechanism 20 is driven by the rotating crank 240, so that the structure of the sample injection mechanism 20 is more compact, the driving space of the sample injection mechanism 20 is small, and the miniaturization of the sample analyzer is facilitated.

Optionally, the sample injection mechanism 20 further includes a bearing 242 rotatably supported on the transmission handle 241, and the bearing 242 is disposed in the transmission groove 263.

The sample injection mechanism 20 further includes a bearing 242 rotatably supported on the transmission handle 241, the transmission handle 241 penetrates through the transmission groove 263 through the bearing 242, and the bearing 242 is used for transmitting force and reducing the abrasion of the transmission handle 241.

Optionally, the base 220 includes a first substrate 221 and two second substrates 222, the first substrate 221 is used for carrying the sample injection mechanism 20, and the second substrates 222 are used for supporting the sample injection mechanism 20. The pushing assembly 250 is slidably supported on the first substrate 221, and the driving motor 230 is disposed between the two second substrates 222.

The first substrate 221 has a supporting surface for placing a sample rack; the second base plates 222 are perpendicular to the first base plate 221, the plate surfaces of the two second base plates 222 are spaced from each other, the driving motor 230 is disposed between the two second base plates 222, the pushing assembly 250 is slidably supported on the first base plate 221, and the rotating crank 240 is disposed on one of the two second base plates 222. Different from the prior art, the sample injection mechanism 20 of the embodiment has a compact structure and a reasonable layout.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the slider in fig. 1. As shown in fig. 4, further, one second substrate 222 of the two second substrates 222 is provided with a through hole for the output shaft of the driving motor 230 to pass through; the pushing assembly 250 includes a slider 260 and a pushing plate 251, the base 220 further includes a guide rail 223 disposed on a side of the first base 221 facing away from the second base 222, and the slider 260 includes a slider body 261 and an extension 262.

A slider body 261 of the slider 260 is slidably supported on the guide rail 223, an extension part 262 is connected with the slider body 261 and extends to the outside of the second base plate 222 provided with a through hole, a transmission groove 263 is arranged on the extension part 262, the rotary crank 240 is positioned on the outside of the second base plate 222 provided with a through hole, and the push plate 251 is fixed on the slider body 261 and is used for contacting the sample holder.

When the sample injection mechanism 20 works, the driving motor 230 works and drives the rotating crank 240 to rotate through the through hole, the transmission handle 241 of the rotating crank 240 penetrates through the transmission groove 263, the rotating crank 240 rotates and drives the sliding block 260 to reciprocate along the guide rail 223, and the push plate 251 pushes the sample rack under the action of the sliding block 260, so that the sample rack is loaded to the conveying mechanism 10.

Different from the prior art, the slide block 260 of the embodiment includes a slide block body 261 and an extension portion 262, the transmission groove 263 is disposed on the extension portion 262, and the rotary crank 240 rotates and drives the slide block 260 to reciprocate along the guide rail 223, so that the transmission path of the sample injection mechanism 20 is short, and the loading or unloading of a small number of test tube racks is more facilitated.

Further, the sample injection mechanism 20 includes a position sensor 270 disposed on the base 220 for detecting the position of the push plate 251.

Specifically, the position sensor 270 of the sample injection mechanism 20 is disposed on the first substrate 221. The push plate 251 of the sample injection mechanism 20 has a sample injection initial position and a sample injection end position; the initial sampling position is the initial position where the push plate 251 starts to push the sample rack, and the sample rack starts to sample at the initial sampling position; the sample introduction end position is a position where the push plate 251 finishes pushing the sample rack, and the sample injection of the sample rack is finished at the sample introduction end position.

When the push plate 251 is located at the initial sampling position, the push plate 251 is located between the position sensors 270, and the push plate 251 shields the position sensors 270. At this time, the driving motor 230 of the sample injection mechanism 20 operates to drive the rotating crank 240 to rotate, so that the push plate 251 pushes the sample rack and realizes sample injection.

When the push plate 251 is at the sample feeding end position, the sample feeding mechanism 20 controls the driving motor 230 to reset, and determines whether the sample feeding mechanism 20 returns to the sample feeding initial position again by acquiring whether the push plate 251 shields the position sensor 270. In an alternative embodiment, the driving motor 230 includes, but is not limited to, a stepping motor, and the sample injection mechanism 20 can determine whether the sample injection mechanism 20 is in the sample injection end position according to the number of steps of the driving motor 230, and reset the push plate 251 when the push plate 251 is in the sample injection end position, so that the push plate 251 returns to the sample injection initial position again for sample injection of the next sample rack.

In this embodiment, the sample injection mechanism 20 includes the position sensor 270, and is disposed on the base 220, and this embodiment determines whether the sample injection mechanism 20 is located at the initial position of sample injection through the position sensor 270, so as to perform sample injection of the next sample holder, and realize continuous sample injection of the sample test tube.

In an alternative embodiment, the position sensor 270 includes, but is not limited to, a photo-coupler detector.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of a sample analyzer provided in the present application. As shown in fig. 5, the present application also provides a sample analyzer that can be used for fluorescence detection of a sample. The sample analyzer includes a sample introduction platform 30, a transport mechanism 10, a sample introduction mechanism 20, and an unloading mechanism 40.

The sample introduction platform 30 is used for installing the conveying mechanism 10, the sample introduction mechanism 20 and the unloading mechanism 40; the conveying mechanism 10 is arranged on one side of the sample introduction platform 30; the conveying mechanism 10 is used for conveying the sample rack 212 loaded on the conveying mechanism 10 to the sampling position; the sample feeding mechanism 20 is used for loading the sample rack 212 placed in the sample loading area 211 to the conveying mechanism 10; the sample injection mechanism 20 and the unloading mechanism 40 are sequentially arranged on the sample injection platform 30 along the conveying direction of the conveying mechanism 10.

Specifically, the sample loading area 211 can be used for placing a plurality of sample racks 212, and since the sample feeding mechanism 20 of any of the above embodiments is adopted in the sample analyzer of this embodiment, the sample feeding mechanism 20 is driven by a crank, and the driving space is small, the loading area of the sample loading area 211 of this embodiment can be set relatively small, and the number of loaded sample racks 212 is small, so as to realize the miniaturization of the sample analyzer; the number of the sample racks 212 loaded by the sample injection mechanism 20 can also be set according to the sample injection amount of the sample injection mechanism 20, and is not particularly limited herein.

When the sample test tube enters the sample injection mechanism 20, the sample injection mechanism 20 detects that the sample rack 212 enters the sample loading area 211, and the sample injection mechanism 20 drives and loads the sample rack 212 to the conveying mechanism 10. The transport mechanism 10 transports the sample rack 212 located on the transport mechanism 10 to the sampling site so that the sample analyzer can sequentially sample and analyze the sample tubes located at the sampling site.

In the present embodiment, the conveying mechanism 10 is used for conveying the sample rack 212 loaded on the conveying mechanism 10 to the sampling position; the sample feeding mechanism 20 is used for loading the sample rack 212 placed in the sample loading area 211 to the conveying mechanism 10; the unloading mechanism 40 is used to unload the sample rack 212 from the conveying mechanism 10. The sample injection mechanism 20 of the sample analyzer of this embodiment pushes the sample rack 212 to the conveying mechanism 10 in a crank transmission manner, so as to realize automatic sample injection of the sample rack 212, and thus the sample analyzer performs sampling analysis on the sample test tube located at the sampling position.

Optionally, the sample introduction mechanism 20 and the sample loading zone 211 are located laterally of the transport mechanism 10; when the sampling mechanism 20 starts to work, the sampling mechanism 20 detects that the sample rack 212 is placed in the sample loading area 211, and the sampling mechanism 20 pushes the sample rack 212 from the sample loading area 211 into the conveying mechanism 10 in a crank transmission manner along a direction perpendicular to the conveying direction of the conveying mechanism 10.

Different from the prior art, the sample injection mechanism 20 of the embodiment loads the sample rack 212 to the conveying mechanism 10 in a crank transmission manner, and the crank transmission structure is more compact, so that the transmission space of the sample injection mechanism 20 is smaller, and the sample injection mechanism 20 is more suitable for sample injection of a small number of sample racks 212, thereby being beneficial to miniaturization of a sample analyzer.

Alternatively, the plate surface of the push plate 251 is parallel to the supporting surface of the conveying mechanism 10 for the sample rack 212, and the contact width of the push plate 251 with the sample rack 212 in the conveying direction of the conveying mechanism 10 is smaller than the width of the sample rack 212 in the conveying direction. When the sample injection mechanism 20 is operated, the push plate 251 reciprocates along the guide rail 223, so that the push plate 251 pushes the sample rack 212 into the conveying mechanism 10 in a direction perpendicular to the conveying direction of the conveying mechanism 10.

Referring to fig. 6, fig. 6 is a schematic structural diagram of the conveying mechanism in fig. 5. As shown in fig. 6, the conveying mechanism 10 includes a conveyor belt 110 and a plurality of blocks 120 disposed on the conveyor belt 110 at intervals along the conveying direction, and the sample injection mechanism 20 pushes the sample rack 212 into between two adjacent blocks 120.

Specifically, the conveyor belt 110 of the conveying mechanism 10 is used for conveying the sample rack 212 to the sampling position; the conveyor belt 110 is provided with a plurality of blocks 120 at intervals along the conveying direction, and two adjacent blocks 120 are used for positioning the sample rack 212.

During the sample analysis, the sample injection mechanism 20 pushes the sample rack 212 into the space between two adjacent blocks 120 of the conveyor belt 110, and the two adjacent blocks 120 can prevent the sample rack 212 from sliding on the conveyor belt 110, and can limit the position of the sample rack 212 to ensure that the sample rack 212 can be transported to a specific position.

Different from the prior art, the conveying mechanism 10 of the present embodiment includes a conveyor belt 110 and a plurality of blocks 120 disposed on the conveyor belt 110 at intervals along the conveying direction, and the positions of the sample holders 212 on the conveyor belt 110 are limited by the blocks 120, so that the conveying mechanism 10 can convey the sample holders 212 to the sampling positions.

Optionally, the sampling mechanism 20 may further include a barcode scanning mechanism for scanning and identifying the barcodes of the sample racks 212 and the barcodes of the sample test tubes. The code scanning mechanism includes, but is not limited to, a rotary code scanning mechanism.

After the conveying mechanism 10 conveys the sample frame 212 to the sampling position, the code scanning mechanism identifies the bar code of the sample frame 212, the sample test tube of the sample frame 212 sequentially scans the code position, and the rotary code scanning mechanism clamps and rotates the test tube, so that the code scanner can perform universal scanning on the bar code of the sample test tube, and the data of the sample test tube corresponds to the detection data of the sample analyzer.

Optionally, the sample analyzer further comprises a sampling mechanism for collecting samples from the sample rack 212 at the sampling location.

Further, the sample analyzer also comprises a conveying module, a reagent module and a reaction module. When the sampling device is used, an original sample is conveyed to a sampling position of the sampling module through the sampling mechanism 20, and the sampling of the sampling module carries out quantitative sampling on the original sample and transfers the original sample to the reaction module to wait for reaction.

The reagent module is used for accommodating and preparing reagents required by sample detection, the conveying module conveys the reagents which need to be added into the samples to the reagent station, and the reagent needles of the reagent module absorb the corresponding reagents and accurately and quantitatively add the reagents into the reaction module so as to obtain the samples to be detected. The sample analyzer detects a sample to be detected to obtain detection data.

Different from the prior art, the sample injection mechanism 20 of the present application includes a base 220, a pushing assembly 250, a driving motor 230, and a rotating crank 240; the pushing assembly 250 is slidably supported on the base 220 along a vertical direction and is provided with a transmission groove 263; the driving motor 230 is relatively fixed with respect to the base 220; the rotary crank 240 is connected to the output shaft of the driving motor 230, and is provided with a transmission handle 241 eccentrically disposed with the output shaft, the transmission handle 241 penetrates through the transmission groove 263, so as to push the pushing assembly 250 to reciprocate along the vertical direction in the process that the driving motor 230 drives the rotary crank 240 to rotate, and push the sample holder 212 to realize sample injection. The sample feeding mechanism 20 pushes the sample frame 212 in a crank transmission mode, the structure is compact, the transmission space is small, the size of the sample feeding mechanism 20 can be reduced, and the miniaturization of a sample analyzer is facilitated.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A kind mechanism that advances of sample analyzer, its characterized in that includes:

a base;

the pushing assembly is supported on the base in a sliding mode along the vertical direction and is provided with a transmission groove;

the driving motor is relatively fixed with the base;

the rotary crank is connected with an output shaft of the driving motor and provided with a transmission handle eccentrically arranged with the output shaft, the transmission handle is arranged in the transmission groove in a penetrating mode, and then the driving motor drives the rotary crank to push in the rotating process to push the pushing assembly to move in a reciprocating mode in the vertical direction, so that the sample frame is pushed to realize sample introduction.

2. The sampling mechanism according to claim 1, further comprising a bearing rotatably supported on the transmission handle, wherein the bearing is disposed in the transmission groove.

3. The sample injection mechanism according to claim 2, wherein the base comprises a first base plate and two second base plates, the first base plate has a supporting surface for placing the sample rack; the two second substrates are connected with the first substrate and extend towards the same side of the first substrate, the surfaces of the two second substrates are arranged at intervals, the pushing assembly is slidably supported on the first substrate, and the driving motor is arranged between the two second substrates.

4. The sampling mechanism according to claim 3, wherein one of the two second substrates is provided with a through hole for passing through the output shaft of the driving motor, the pushing assembly comprises a sliding block and a pushing plate, the base further comprises a guide rail provided on a side of the first substrate facing away from the second substrate, and the sliding block is slidably supported on the guide rail and connected with the rotating crank.

5. The sampling mechanism according to claim 4, wherein the slider includes a slider body and an extension portion, the slider body is slidably supported on the guide rail, the extension portion is connected to the slider body and extends to an outer side of the second substrate having the through hole, the transmission slot is disposed on the extension portion, the rotary crank is located at the outer side of the second substrate having the through hole, and the push plate is fixed on the slider body and is configured to contact the sample rack.

6. The sampling mechanism of claim 5, wherein the sampling mechanism comprises a position sensor disposed on the base for detecting a position of the push plate.

7. The sample injection mechanism of claim 6, wherein the position sensor is a position sensor.

8. A sample analyzer, comprising:

the conveying mechanism is used for conveying the sample rack loaded on the conveying mechanism to a sampling position;

the sample introduction mechanism of any of claims 1 to 7, configured to load a sample rack placed in a sample loading zone to the transport mechanism;

an unloading mechanism for unloading the sample rack from the conveying mechanism.

9. The sample analyzer of claim 8 wherein the sample introduction mechanism and the sample loading zone are located laterally of the transport mechanism, the sample introduction mechanism crank-driving the sample rack into the transport mechanism in a direction perpendicular to the transport direction of the transport mechanism.

10. The sample analyzer as claimed in claim 9, wherein the conveying mechanism comprises a conveyor belt and a plurality of blocks spaced along the conveying direction, and the sample feeding mechanism pushes the sample rack into between two adjacent blocks.

11. The sample analyzer of claim 10 further comprising a sampling mechanism for collecting samples from the sample racks at the sampling location.