Sample frame conveying device and analyzer

Abstract

The embodiment of the utility model discloses a sample frame conveying device and an analyzer, which comprise a base body, a sample feeding position and a sample discharging position which are arranged at an interval; the first transmission assembly can drive the sample frame to move in the direction from the sample feeding position to the sample discharging position; the second transmission assembly comprises a carrying frame capable of moving back and forth between the sample feeding position and the sample discharging position, and the carrying frame is located on the moving path of the sample frame; the positioning assembly comprises a first positioning piece and a second positioning piece which are arranged on the carrying frame in a spaced mode, and the first positioning piece and the second positioning piece are elastically and rotationally connected to the carrying frame; a limiting space which is located in the moving direction of the sample frame and can limit the position of the sample frame can be defined by the first positioning piece, the second positioning piece and the carrying frame. By arranging the carrying frame, the first positioning piece and the second positioning piece, the position of the sample frame is limited, position deviation of the sample frame in the moving process is avoided, and accurate sampling is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of analyzers, in particular to a sample rack conveying device and an analyzer. Background Art

[0002] In some chemical detection instruments such as analyzers, it is necessary to use a sample rack transmission mechanism to transmit the sample rack to a corresponding sampling position or other positions for sampling work. The sample rack transmission mechanism of the chemiluminescence immunoassay analyzer in the related art performs individual sampling of sample tubes through the cooperation of a conveyor belt and a carrier plate, and this method has a relatively simple structure.

[0003] However, the sample rack transmission structure in the related art mainly relies on the accommodation space formed by surrounding the carrier plate to limit the position of the sample rack. The sample rack is still prone to positional deviation along the moving direction during the movement. As a result, when the sample rack transmission mechanism in the related art transmits the sample rack, it is prone to positional deviation, affecting the sampling accuracy. Summary of the Utility Model

[0004] Based on this, in view of the above problems, it is necessary to propose a sample rack conveying device and an analyzer that can ensure the sampling accuracy.

[0005] An embodiment of the utility model provides a sample rack conveying device for transporting a sample rack to realize sampling of a sample on the sample rack, including:

[0006] A base body having an injection position and a sample output position arranged at intervals;

[0007] A first transmission component capable of driving the sample rack to move along the direction from the injection position to the sample output position;

[0008] A second transmission component including a carrier that can move back and forth between the injection position and the sample output position, and the carrier is located on the moving path of the sample rack;

[0009] And a positioning component including a first positioning member and a second positioning member arranged at intervals along the moving direction of the sample rack on the carrier. The first positioning member and the second positioning member are elastically rotatably connected to the carrier. In a free state, a limiting space located in the moving direction of the sample rack and capable of limiting the position of the sample rack is surrounded among the first positioning member, the second positioning member, and the carrier.

[0010] By providing the first positioning member and the second positioning member, the position of the sample rack can be defined together with the carrier, and the first positioning member and the second positioning member can limit the position of the sample rack in the moving direction, making the position of the sample rack more stable.

[0011] In one embodiment, the carrier includes a fixing portion, the first positioning member includes a first positioning main body, one end of the first positioning main body is connected with a first connecting portion, and the other end is provided with a first positioning portion. The first connecting portion is elastically connected to the fixing portion by a torsion spring;

[0012] The second positioning member includes a second positioning main body, one end of the second positioning main body is connected with a second connecting portion, and the other end is provided with a second positioning portion. The second connecting portion is elastically connected to the fixing portion by a torsion spring;

[0013] When the sample rack is located in the limiting space, the first positioning portion and the second positioning portion respectively abut against opposite ends of the sample rack.

[0014] By providing the first positioning portion and the second positioning portion, when the sample rack is in the limiting space, under the action of elastic force, the first positioning portion and the second positioning portion can respectively abut against both ends of the sample rack along its moving direction. In this way, the sample rack can be clamped in the limiting space, making its position more stable.

[0015] In one embodiment, limiting portions are provided at positions where the sample rack is used to abut against the first positioning portion and the second positioning portion. The limiting portions are groove structures, and two inclined surfaces are provided at the ends of the first positioning portion and the second positioning portion for abutting against the limiting portions, so that both the first positioning portion and the second positioning portion are arranged in a conical shape.

[0016] By setting the abutting ends of the first positioning portion and the second positioning portion to be conical, when the first positioning portion and the second positioning portion abut against the sample rack, the conical ends can cooperate with the groove structure on the sample rack to achieve an anti-slip effect.

[0017] In one embodiment, the carrier further includes a support plate fixedly connected to the fixing portion, and a sample injection right side plate and a sample injection left side plate spacedly connected to the support plate. A channel for the sample rack to pass through is formed between the sample injection right side plate and the sample injection left side plate. The sample injection right side plate is arranged away from the fixing portion and encloses and forms the limiting space with the first positioning member and the second positioning member.

[0018] The sample injection left side plate and the sample injection right side plate can limit the movement of the sample rack perpendicular to its conveying direction. Cooperating with the first positioning portion and the second positioning portion to limit the movement of the sample rack along its conveying direction, the movement of the sample rack in its conveying plane can be limited, making the position of the sample rack not easily deviate.

[0019] In one embodiment, the second transmission assembly includes a transmission frame movably disposed on the base body, the fixing portion is fixedly connected to the transmission frame, a second driving member is further connected to the base body, a second driving wheel is disposed on the output shaft of the second driving member, a second driven wheel parallel to the rotating shaft of the second driving wheel is rotatably disposed on the base body, a second transmission belt is connected between the second driving wheel and the second driven wheel, and the transmission frame is fixedly connected to the second transmission belt.

[0020] Through the cooperation of the second driving wheel, the second driven wheel and the second transmission belt, the drive of the second driving member can be transmitted so that the first positioning member, the second positioning member and the carrier can all move synchronously with the sample rack.

[0021] In one embodiment, a slide rail is further disposed on the base body along the moving direction of the carrier, and a slider for connecting with the slide rail is disposed on the transmission frame.

[0022] Through the cooperation of the slide rail and the slider, the moving direction of the carrier can be limited so that its moving direction will not deviate.

[0023] In one embodiment, a front end track and a rear end track are spaced apart on the base body, and the front end track and the rear end track serve as the sample output position and the sample input position respectively;

[0024] The front end track includes a first bottom plate fixed to the base body and a first front side plate and a second front side plate spaced apart on the first bottom plate, and a sample output space for the sample rack is formed between the first front side plate and the second front side plate;

[0025] The rear end track includes a second bottom plate fixed to the base body and a first rear side plate and a second rear side plate spaced apart on the second bottom plate, and a sample input space for the sample rack is formed between the first rear side plate and the second rear side plate.

[0026] By providing the sample input space, the trajectory of the sample rack can be limited when the sample rack is conveyed, so that it can smoothly enter the limit space when conveyed along the conveying path, and the sample output space can ensure the orderly output of the sample rack.

[0027] In one embodiment, a rear pressing plate is disposed at one end of the second rear side plate opposite to the first positioning main body, an abutting surface is disposed on one end surface of the first positioning main body facing the rear pressing plate, the abutting surface is an inclined surface or a curved surface, and when the rear pressing plate abuts against the abutting surface, the first positioning member can be forced to rotate and make way;

[0028] One end of the second positioning portion facing away from the second positioning main body is inclined, and one end of the second front side plate faces the inclined surface. When one end of the second front side plate abuts against the inclined surface, the second positioning member can be forced to rotate and make way.

[0029] Through the above arrangement, when the carrier moves, through the action of the rear pressure plate and the second front side plate, the first positioning portion and the second positioning portion can automatically give way without manually moving the first positioning portion and the second positioning portion, so as to set the end opening corresponding to the limit space, which makes it more convenient for the sample rack to enter or exit the limit space.

[0030] In one embodiment, a first frame and a second frame are spaced apart on the base, a first shaft is provided on the first frame, a second shaft is provided on the second frame, the first transmission assembly includes a first transmission wheel rotatably provided on the first shaft and the second shaft, and also includes a first driving member fixedly connected to the base, a first driving wheel is provided at the output end of the first driving member, and a first transmission belt is connected between the first transmission wheel and the first driving wheel.

[0031] The sample rack can be transported by the cooperation of the first driving member, the first driving wheel, the first driven wheel and the first transmission belt.

[0032] An embodiment of the utility model further provides an analyzer, comprising a main body and the sample rack conveying device described above, wherein the main body is provided with a loading position, a sampling position and an unloading position, and the sample rack can enter the sample introduction position of the base body at the loading position, and the sample rack can be conveyed to the sampling position for sampling through the driving of the first transmission component and the second transmission component, and the sample rack after sampling can be conveyed to the unloading position via the sample outlet position.

[0033] The following beneficial effects are achieved by using the embodiments of the present invention:

[0034] According to the sample rack conveying device and analyzer in the above-mentioned embodiments, a carrier is set on the moving path of the sample rack, and a first positioning member and a second positioning member are set to form a limited space between the two positioning members and the carrier. The limited space is located on the moving path of the sample rack, so that the sample rack can enter the limited space during the movement. The position of the sample rack in the moving direction is limited by the first positioning member and the second positioning member, which can avoid the phenomenon of position displacement of the sample rack during the movement, and further avoid the problem of inaccurate sampling caused by position displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Wherein:

[0037] Figure 1 shows a top view of a sample rack conveying device provided according to the present utility model;

[0038] Figure 2 shows a schematic structural view of a first positioning member provided according to the present utility model;

[0039] Figure 3 shows a schematic structural view of a second positioning member provided according to the present utility model;

[0040] Figure 4 shows an exploded view of a sample rack conveying device provided according to the present utility model;

[0041] Figure 5 shows a schematic structural view of a sample rack conveying device provided according to the present utility model;

[0042] Figure 6 shows another schematic structural view of a sample rack conveying device provided according to the present utility model;

[0043] Figure 7 shows a front view of a sample rack conveying device provided according to the present utility model.

[0044] Description of main component symbols:

[0045] 1. Substrate; 11. First frame; 111. First shaft; 12. Second frame; 121. Second shaft; 13. Front-end track; 131. First front side plate; 132. Second front side plate; 133. First bottom plate; 14. Rear-end track; 141. First rear side plate; 142. Second rear side plate; 143. Second bottom plate; 144. Rear pressure plate; 15. Slide rail; 16. Slide block; 2. First transmission assembly; 21. First driving member; 22. First driving wheel; 23. First transmission belt; 24. First driven wheel; 3. Second transmission assembly; 31. Carrier; 311. Fixed part; 312. Support plate; 313. Sampling right side plate; 314. Sampling left side plate; 32. Second driving member; 33. Second transmission belt; 34. Second driving wheel; 35. Second driven wheel; 36. Transmission frame; 4. Positioning assembly; 41. First positioning member; 411. First positioning body; 4111. Contact surface; 412. First connecting part; 413. First positioning part; 42. Second positioning member; 421. Second positioning body; 422. Second connecting part; 423. Second positioning part; 5. Sample rack; 51. Limiting part. Detailed implementation manners

[0046] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0049] On the one hand, the present utility model provides a sample rack 5 conveying device for transporting the sample rack 5 to realize sampling of the samples on the sample rack 5. In one embodiment, please refer to Figures 1 to 3 , the sample rack 5 conveying device includes a base body 1, a first transmission assembly 2, a second transmission assembly 3 and a positioning assembly 4. Among them, the base body 1 is the overall structure of the sample rack 5 conveying device. It can not only provide an installation environment for the components, but also serve as the support frame of the entire conveying device. The base body 1 has a sample loading position and a sample unloading position arranged at intervals. The sample loading position is the starting point for transporting the sample rack 5, and the sample unloading position is the end point for transporting the sample rack 5.

[0050] The first transmission assembly 2 can drive the sample rack 5 to move along the direction from the sample loading position to the sample unloading position. The sample rack 5 is initially located at the sample loading position, and the first transmission member can drive the sample rack 5 to move towards the sample unloading position and can move to the sample unloading position.

[0051] The second transmission assembly 3 includes a carrier 31 that can move back and forth between the sample loading position and the sample unloading position. The carrier 31 is located on the moving path of the sample rack 5. A limiting space for restricting the sample rack 5 can be formed on the carrier 31. The sample rack 5 moved by the first transmission assembly 2 can move into this limiting space to restrict the position of the sample rack 5.

[0052] Specifically, the positioning assembly 4 includes a first positioning member 41 and a second positioning member 42 which are spaced apart on the carrier 31 along the moving direction of the sample rack. The first positioning member 41 and the second positioning member 42 are elastically rotatably connected to the carrier 31. In a free state, a limiting space which is located in the moving direction of the sample rack 5 and can limit the position of the sample rack 5 can be enclosed between the first positioning member 41, the second positioning member 42 and the carrier 31.

[0053] When the carrier 31 moves to the sample feeding position, part of the structure of the sample feeding position can squeeze the first positioning member 41 to rotate, so that the first transmission component 2 drives the sample rack 5 to enter the limited space to make way, and the first transmission component 2 can drive the sample rack 5 to move into the limited space. When the carrier 31 moves toward the sample output position and the first transmission component synchronously drives the sample rack 5 to move toward the sample output position, the first positioning member 41 can return to its original position under the action of elastic force. At this time, the first positioning member 41 can cooperate with the second positioning member 42 to clamp the sample rack 5 in the limited space to limit the position of the sample rack 5. When the carrier 31 moves to the sample output position, part of the structure of the sample output position can squeeze the second positioning member 42 to rotate, so that the first transmission component 2 drives the sample rack 5 to leave the limited space to make way, and at this time, the first transmission component 2 can drive the sample rack 5 to leave the limited space and move to the sample output position. It should be noted that when the carrier 31 moves, the sample rack 5 located in the limited space can move synchronously.

[0054] By setting the carrier 31, the carrier 31 is set on the moving path of the sample rack 5, and by setting the first positioning member 41 and the second positioning member 42, a limited space is formed between the two positioning members and the carrier 31. The limited space is located on the moving path of the sample rack 5, so that the sample rack 5 can enter the limited space during the movement. The first positioning member 41 and the second positioning member 42 can limit the position of the sample rack 5 in the moving direction, which can avoid the sample rack 5 from shifting in position during the movement, and further avoid the problem of inaccurate sampling caused by the position shift.

[0055] In addition, the first positioning member 41 and the second positioning member 42 are both elastically arranged on the carrier 31, and the limiting space is in a closed state in the free state. The carrier 31 can drive the two positioning members to move during the movement between the sample inlet position and the sample outlet position. When moving to the sample inlet position, the first positioning member 41 can give way, so that the sample rack 5 can smoothly enter the limiting space. During the movement of the carrier 31 from the sample inlet position to the sample outlet position, the first positioning member 41 can return to its original position under the action of elastic force, and cooperate with the second positioning member 42 to limit the sample rack 5 in the limiting space. When the carrier 31 moves to the sample outlet position, the second positioning member 42 can be driven to rotate and give way, so that the sample rack 5 can smoothly leave the limiting space. Such a setting can realize that the limiting space can be automatically opened or closed during the movement of the carrier 31, which is more convenient to limit the position of the sample rack 5.

[0056] In one embodiment, please refer to Figures 1 to 4 , the carrier 31 includes a fixing portion 311, the first positioning member 41 includes a first positioning main body 411, one end of the first positioning main body 411 is connected with a first connecting portion 412, and the other end is provided with a first positioning portion 413. The first connecting portion 412 is rotatably connected to the fixing portion 311 through a rotating shaft, and the first connecting portion 412 is elastically connected to the fixing portion 311 by a torsion spring.

[0057] The second positioning member 42 includes a second positioning main body 421, one end of the second positioning main body 421 is connected with a second connecting portion 422, and the other end is provided with a second positioning portion 423. The second connecting portion 422 is rotatably connected to the fixing portion 311 through a rotating shaft, and the second connecting portion 422 is elastically connected to the fixing portion 311 by a torsion spring.

[0058] In the free state, under the action of the torsion spring, both the first positioning portion 413 and the second positioning portion 423 are located on the moving path of the sample rack 5. When the sample rack 5 is located in the limiting space, the first positioning portion 413 and the second positioning portion 423 respectively abut against opposite ends of the sample rack 5.

[0059] The positions of the first positioning portion 413 and the second positioning portion 423 can be restricted by the torsion spring, so that the positioning portions block the moving path of the sample rack 5. To rotate the first positioning portion 413 and the second positioning portion 423, a certain force needs to be applied to overcome the elastic force of the torsion spring.

[0060] In a specific embodiment, limiting portions 51 are provided at the positions where the sample rack 5 abuts against the first positioning portion 413 and the second positioning portion 423. The limiting portions 51 are of groove structures, and the groove structures can be formed by a plurality of spaced convex strips protruding on the sample rack 5, or can be directly grooves opened on the sample rack 5. Two inclined surfaces are provided at the ends of the first positioning portion 413 and the second positioning portion 423 for abutting against the limiting portions 51. The ends of the two inclined surfaces are connected, and there is a certain included angle between the two inclined surfaces, which is determined according to the actual situation. In this way, both the first positioning portion 413 and the second positioning portion 423 are arranged in a conical shape. When the first positioning portion 413 and the second positioning portion 423 abut against the sample rack 5, the abutting portions on the first positioning portion 413 and the second positioning portion 423 are located in the grooves, and the two inclined surfaces can respectively abut against the side walls of the grooves.

[0061] In addition, the ends of the first positioning portion 413 and the second positioning portion 423 can not only be arranged in a conical shape, but also be arranged in a curved surface, for example, can be arranged in a hemispherical shape.

[0062] By setting the first positioning portion 413 and the second positioning portion 423 to be conical, when the sample rack 5 is abutted, the sample rack 5 can be extruded towards the carrier 31, so that the position of the sample rack 5 is more stable.

[0063] In a specific embodiment, the carrier 31 further includes a pallet 312 fixedly connected to the fixing portion 311, and a sample injection right side plate 313 and a sample injection left side plate 314 spacedly connected to the pallet 312. The pallet 312 is located on the moving path of the sample rack 5. The sample injection right side plate 313 and the sample injection left side plate 314 are arranged in parallel, and the gap between the two forms a channel for the sample rack 5 to pass through. The channel is arranged opposite to the transmission path of the sample rack 5, so that the sample rack 5 located at the sample injection position can enter the channel. It should be noted that the width of the channel is preferably adapted to the thickness of the sample rack 5 to prevent the sample rack 5 from shifting.

[0064] Wherein, the sample injection right side plate 313 is arranged away from the fixing portion 311. A limiting space is formed by enclosing between the sample injection right side plate 313 and the first positioning member 41 and the second positioning member 42. The sample rack 5 is located in the limiting space, and the first positioning portion 413 and the second positioning portion 423 respectively abut against the limiting portion 51 on the sample rack 5. When the first positioning portion 413 and the second positioning portion 423 respectively abut against the corresponding limiting portion 51, there is a tendency to extrude the sample rack 5 to move towards the sample injection right side plate 313, thereby realizing the clamping of the sample rack 5.

[0065] In a specific embodiment, the second transmission assembly can drive the carrier 31 to move. Specifically, the second transmission assembly includes a transmission frame 36 movably arranged on the base 1. The fixing portion 311 is fixedly connected to the transmission frame 36. The second transmission assembly further includes a second driving member 32 arranged on the base 1. A second driving wheel 34 is arranged on the output shaft of the second driving member 32. A second driven wheel parallel to the rotating shaft of the second driving wheel 34 is rotatably arranged on the base 1. A second transmission belt 33 is connected between the second driving wheel 34 and the second driven wheel. The transmission frame 36 is fixedly connected to the second transmission belt 33. The transmission direction of the second transmission belt 33 is the same as the transmission direction of the sample rack 5.

[0066] It should be noted that a slide rail 15 is further arranged on the base 1 along the moving direction of the carrier 31, and a slider 16 for connecting with the slide rail 15 is arranged on the transmission frame 36. Through the cooperation of the slider 16 and the slide rail 15, the moving direction of the carrier 31 can be restricted to prevent the carrier 31 from shifting during the moving process. In addition to the slider 16 and slide rail 15 structure, a linear motion structure such as a linear bearing can also be used, which is not limited herein.

[0067] In one embodiment, please also combine Figure 5 and Figure 6, on the base body 1, a front track 13 and a rear track 14 are arranged at intervals. The front track 13 and the rear track 14 serve as the sample output position and the sample input position respectively, and spaces for accommodating the sample rack 5 are formed on both the front track 13 and the rear track 14.

[0068] Specifically, the front track 13 includes a first bottom plate 133 fixed on the base body 1, and a first front side plate 131 and a second front side plate 132 arranged at intervals on the first bottom plate 133. A sample output space for the sample rack 5 is formed between the first front side plate 131 and the second front side plate 132. The first front side plate 131 and the second front side plate 132 are arranged in parallel, and the width of the sample output space is preferably adapted to the thickness of the sample rack 5 (the thickness of the sample rack 5 is the dimension in the direction perpendicular to its moving direction).

[0069] The rear track 14 includes a second bottom plate 143 fixed on the base body 1, and a first rear side plate 141 and a second rear side plate 142 arranged at intervals on the second bottom plate 143. A sample input space for the sample rack 5 is formed between the first rear side plate 141 and the second rear side plate 142. The first rear side plate 141 and the second rear side plate 142 are arranged in parallel, and the width of the sample input space is preferably adapted to the thickness of the sample rack 5.

[0070] By arranging the front track 13 and the rear track 14, the running direction of the sample rack 5 can be restricted, and the running path of the sample rack 5 can be ensured.

[0071] It should be noted that the carrier 31 can move between the front track 13 and the rear track 14. At one end of the second rear side plate 142 facing the first positioning body 411, a rear pressure plate 144 is provided. On one end face of the first positioning body 411 facing the rear pressure plate 144, a contact surface 4111 is provided, and the contact surface 4111 is an inclined surface or a curved surface. In the free state of the first positioning member 41, the contact surface 4111 faces the rear pressure plate 144. When the carrier 31 moves towards the rear track 14, the rear pressure plate 144 can abut against the contact surface 4111. As the carrier 31 continues to move, the rear pressure plate 144 can force the first positioning member 41 to rotate and make way in a direction away from the sample input right side plate 313. When the carrier 31 moves to the position where the limit space is docked with the sample input space, the first positioning member 41 completely makes way, so that the sample rack 5 can smoothly move from the sample input space into the limit space.

[0072] In addition, one end of the second positioning portion 423 away from the end for abutting against the sample rack 5 is connected to one end of the second positioning main body 421 away from the second connecting portion 422, and the end face of the second positioning portion 423 facing away from the second positioning main body 421 is provided with an inclined surface, and the inclined surface gradually inclines towards the second positioning main body 421 along the transportation path of the sample rack 5. One end of the second front side plate 132 facing the second positioning member 42 is disposed opposite to the inclined surface. When the carrier 31 moves towards the front end track 13, one end of the second front side plate 132 facing the second positioning member can abut against the inclined surface. During the continuous movement of the carrier 31, the end of the second front side plate 132 moves along the inclined surface, which can force the second positioning member 42 to rotate and give way in a direction away from the sample injection right side plate 313, so as to facilitate the first transmission assembly 2 to drive the sample rack 5 out of the limiting space.

[0073] In one embodiment, please also refer to Figure 7 , a first frame body 11 and a second frame body 12 are further spaced apart on the base body 1. The first frame body 11 and the second frame body 12 are respectively located at both ends of the base body 1 in the transmission direction of the sample rack 5. A first shaft rod 111 is provided on the first frame body 11, and a second shaft rod 121 is provided on the second frame body 12. The length directions of the first shaft rod 111 and the second shaft rod 121 are both perpendicular to the transportation direction of the sample rack 5. The first transmission assembly 2 includes a first transmission wheel 24 rotatably disposed on the first shaft rod 111 and the second shaft rod 121. The first transmission assembly 2 further includes a first driving member 21 fixedly connected to the base body 1. The first driving member 21 is preferably a motor. A first driving wheel 22 is provided at the output end of the first driving member 21. The rotation axes of the first driving wheel 22, the first transmission wheel 24, and the second transmission wheel 35 are parallel. A first transmission belt 23 is connected between the first transmission wheel 24 and the first driving wheel 22. The movement of the first driving member 21 can be transmitted to the first transmission belt 23 through the first driving wheel 22 and the first transmission wheel 24, and then the sample rack 5 can be driven to move.

[0074] It should be noted that the carrier 31 and the sample rack 5 move independently. When setting, the first transmission belt 23 needs to pass through the gap between the sample injection left side plate 314 and the sample injection right side plate 313, and the first transmission belt 23 is disposed above the support plate 312.

[0075] On the other hand, the present utility model further provides an analyzer, including a main body and the above-mentioned sample rack 5 conveying device. The main body has a loading position, a sampling position, and an unloading position. The sample rack 5 can enter the sample injection position of the base body 1 at the loading position, and can be conveyed to the sampling position for sampling through the driving of the first transmission assembly 2 and the second transmission assembly 3. The sampled sample rack 5 can be conveyed to the unloading position via the sample output position.

[0076] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0077] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A sample rack conveying device, used for transporting a sample rack to achieve sampling of samples on the sample rack, characterized in that: include: A matrix having a sample inlet and a sample outlet arranged at intervals; A first transmission assembly, capable of driving the sample rack to move along a direction from the sample input position to the sample output position; A second transmission assembly comprises a carrier capable of reciprocating between the sample inlet position and the sample outlet position, wherein the carrier is located on a moving path of the sample rack; And a positioning component, including a first positioning member and a second positioning member arranged on the carrier at intervals along the moving direction of the sample rack, the first positioning member and the second positioning member are elastically connected to the carrier, and in a free state, a limiting space located in the moving direction of the sample rack and capable of limiting the position of the sample rack is surrounded by the first positioning member, the second positioning member and the carrier.

2. The sample rack conveying device according to claim 1, characterized in that: The carrier includes a fixing portion, the first positioning member includes a first positioning body, one end of the first positioning body is connected to the first connecting portion, and the other end is provided with a first positioning portion, and the first connecting portion is elastically connected to the fixing portion by a torsion spring; The second positioning member comprises a second positioning body, one end of the second positioning body is connected to a second connecting portion, and the other end is provided with a second positioning portion, and the second connecting portion is elastically connected to the fixing portion by a torsion spring; When the sample rack is located in the limiting space, the first positioning portion and the second positioning portion respectively abut against two opposite ends of the sample rack.

3. The sample rack conveying device according to claim 2, characterized in that: The positions of the sample rack for abutting the first positioning portion and the second positioning portion are both provided with limiting portions, the limiting portions are groove structures, and the ends of the first positioning portion and the second positioning portion for abutting the limiting portions are both provided with two inclined surfaces, so that the first positioning portion and the second positioning portion are both arranged in a conical shape.

4. The sample rack conveying device according to claim 2, characterized in that: The carrier also includes a support plate fixedly connected to the fixed portion, and an injection right plate and an injection left plate spaced apart from each other on the support plate. A channel for the sample rack to pass through is formed between the injection right plate and the injection left plate. The injection right plate is arranged away from the fixed portion, and the limiting space is formed between the first positioning member and the second positioning member.

5. The sample rack conveying device according to claim 2, characterized in that: The second transmission assembly includes a transmission frame movably arranged on the base, the fixing portion is fixedly connected to the transmission frame, a second driving member is also connected to the base, a second driving wheel is arranged on the output shaft of the second driving member, a second driven wheel parallel to the rotating shaft of the second driving wheel is rotatably arranged on the base, a second transmission belt is connected between the second driving wheel and the second driven wheel, and the transmission frame is fixedly connected to the second transmission belt.

6. The sample rack conveying device according to claim 5, characterized in that: A slide rail is also arranged on the base along the moving direction of the carrier, and a sliding block for connecting with the slide rail is arranged on the transmission frame.

7. The sample rack conveying device according to claim 2, characterized in that: A front track and a rear track are arranged on the base body at intervals, and the front track and the rear track serve as the sample outlet and the sample inlet, respectively; The front rail comprises a first bottom plate fixed on the base, and a first front side plate and a second front side plate arranged at intervals on the first bottom plate, and a sample rack sample outlet space is formed between the first front side plate and the second front side plate; The rear end track comprises a second bottom plate fixed on the base body and a first rear side plate and a second rear side plate spaced apart on the second bottom plate, wherein a sample introduction space of the sample rack is formed between the first rear side plate and the second rear side plate.

8. The sample rack conveying device according to claim 7, characterized in that: A rear pressure plate is arranged at one end of the second rear side plate facing the first positioning body, and an abutment surface is arranged at one end surface of the first positioning body facing the rear pressure plate. The abutment surface is an inclined surface or a curved surface, and the abutment of the rear pressure plate against the abutment surface can force the first positioning member to rotate and give way; One end of the second positioning portion facing away from the second positioning body is arranged in an inclined surface, and one end of the second front side plate faces the inclined surface. When one end of the second front side plate abuts against the inclined surface, the second positioning member can be forced to rotate and give way.

9. The sample rack conveying device according to claim 1, characterized in that: The base is also provided with a first frame and a second frame at intervals, the first frame is provided with a first shaft rod, the second frame is provided with a second shaft rod, the first transmission assembly includes a first transmission wheel rotatably provided on the first shaft rod and the second shaft rod, and also includes a first driving member fixedly connected to the base, the output end of the first driving member is provided with a first driving wheel, and a first transmission belt is connected between the first transmission wheel and the first driving wheel.

10. An analyzer, characterized in that: The invention comprises a main body and a sample rack conveying device as described in any one of claims 1 to 9, wherein the main body is provided with a loading position, a sampling position and an unloading position, the sample rack can enter the sample introduction position of the base body at the loading position, the sample rack can be conveyed to the sampling position for sampling by the driving of the first transmission component and the second transmission component, and the sample rack after sampling can be conveyed to the unloading position via the sample outlet position.

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