Sample analysis apparatus

Abstract

The utility model provides sample analysis equipment, and relates to the technical field of detection. The reaction cup comprises a driving mechanism and a grabbing device, the grabbing device is connected with the driving mechanism to transfer the reaction cup, and the grabbing device comprises a fixed seat; the two clamping pieces are both connected to the fixing base, at least one of the two clamping pieces can rotate relative to the fixing base, a guide structure is arranged on each clamping piece, and the guide structures are configured to enable the two clamping pieces to be opened when abutting against the reaction cup so that the reaction cup can enter the position between the two clamping pieces; and the first elastic piece is connected between the two clamping pieces, and the first elastic piece is used for closing the two clamping pieces. The gripping device can efficiently fetch and place the reaction cup without being driven by driving equipment, so that the efficiency of detecting a sample in the reaction cup is improved.

Description

Technical Field

[0001] The present application relates to the field of detection technology, and in particular to a sample analysis device. Background Art

[0002] In in vitro diagnostic equipment, reaction cups are widely used as reaction carriers for blood sample testing. During the daily use of the reaction cups, mechanical grippers are required to implement the picking and placing processes. Among them, the mechanical grippers usually rely on motor drive or pneumatic drive to realize their own opening and closing.

[0003] However, the structure of the existing cuvette mechanical gripper is relatively complex and the cost is relatively high. Moreover, the process of driving the mechanical gripper by a motor or a pneumatic circuit is time-consuming, thereby affecting the efficiency of taking and placing the cuvette. Utility Model Content

[0004] The present application provides a sample analysis device, in which a gripping device can efficiently take out and place a reaction cup without being driven by a driving device, thereby improving the efficiency of sample detection in the reaction cup.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] The present application provides a sample analysis device, which includes a driving mechanism and a gripping device, wherein the gripping device is connected to the driving mechanism to transport a reaction cup, wherein the gripping device includes:

[0007] Fixed seat;

[0008] Two clamping members, both connected to the fixing base, at least one of the two clamping members being rotatable relative to the fixing base, and a guide structure being provided on the clamping members, the guide structure being configured to open the two clamping members when abutting against the reaction cup, so that the reaction cup can enter between the two clamping members;

[0009] The first elastic member is connected between the two clamping members, and is used to close the two clamping members.

[0010] In a possible implementation, the guide structure is an open groove provided on the first side surface of the clamping member, an inner wall of the open groove has a guide slope, and the guide slope extends to the opening of the open groove.

[0011] In a possible implementation, a clamping groove is further provided on the inner wall of the opening groove, and the clamping groove extends to the first side surface of the clamping member, and the clamping groove is configured to be clamped with the end flange of the reaction cup.

[0012] In a possible implementation, the inner wall of the opening groove further has a positioning arc surface, and the positioning arc surface is located at the inner wall of the opening groove away from the opening.

[0013] In a possible implementation, the gripping device further includes a positioning member protruding from the first end face of the clamping member; one end of the first elastic member is connected to the positioning member of one of the clamping members, and the other end of the first elastic member is connected to the positioning member of another of the clamping members.

[0014] In a possible implementation, the grasping device further includes a second elastic member fixedly connected to the fixing seat, and the second elastic member has an abutment portion extending toward a side away from the fixing seat to limit the axial movement of the reaction cup.

[0015] In a possible implementation, the gripping device further includes a handle, which is fixedly connected to the clamping member. The handle is subjected to a force to drive the clamping member to rotate, so that the two clamping members move away from each other.

[0016] In a possible implementation, a cup dropping device is further included, which includes a base and a baffle, the baffle is arranged on the base, and a cup dropping channel is provided on the base. The baffle cooperates with the handle to move the two clamping members away from each other, so that the reaction cup falls into the cup dropping channel.

[0017] In a possible implementation, the gripping device further includes a limiting member, the limiting member is fixedly connected to the fixing seat, and the limiting member has a limiting portion;

[0018] The limiting portion is located on the rotation path of the clamping member and is configured to limit the rotation angle of the clamping member when abutting against the clamping member.

[0019] In a possible implementation, a limiting groove is provided on one side of one of the clamping members relative to the other clamping member, and the limiting portion extends into the limiting groove to limit the rotation angle of the clamping members when they are closed.

[0020] In a possible implementation, the fixing seat has a positioning boss, which protrudes toward a side away from the clamping member. The driving mechanism includes a transmission arm, which has a positioning side wall, and the positioning boss is used to cooperate with the positioning side wall to limit the position.

[0021] In a possible implementation, a rotating shaft is further included, the clamping member has an axial hole, the fixing seat has a connecting hole, and the rotating shaft is passed through the axial hole and the connecting hole, so that the clamping member is rotatably connected to the fixing seat.

[0022] The sample analysis device provided by this application has at least the following beneficial effects:

[0023] The gripping device in the sample analysis device can efficiently take and place the reaction cup without being driven by a driving device, thereby improving the efficiency of sample detection in the reaction cup. That is, the guide structure is configured to open the two clamping parts when it abuts against the reaction cup, allowing the reaction cup to enter between the two clamping parts, thereby clamping the reaction cup. The first elastic member causes the two clamping parts to close and clamp the reaction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of the cuvette gripping device and the transmission arm provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the reaction cup grasping device grasping the reaction cup;

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the medium reaction cup grabbing device;

[0028] Figure 4 A schematic diagram of the cup dropping process of the cuvette gripping device provided in an embodiment of the present application;

[0029] Figure 5 for Figure 4 Schematic diagram of the rear view structure;

[0030] Figure 6 Schematic diagram of the layout structure of the detection unit;

[0031] Figure 7 This is a schematic diagram of the cuvette gripping device provided in an embodiment of the present application placing a cuvette on a detection unit.

[0032] Description of reference numerals:

[0033] 100, fixed seat;

[0034] 110. Limiting parts;

[0035] 111. Limiting portion; 1111. Extension section; 112. Limiting screw;

[0036] 120, positioning boss;

[0037] 130. Transmission arm; 131. Positioning side wall;

[0038] 200, clamping member;

[0039] 210, first side surface; 220, first end surface; 230, handle;

[0040] 240, reaction cup; 250, limiting groove; 260, second side surface; 270, third side surface;

[0041] 300, guide structure;

[0042] 310, opening slot; 311, guide slope;

[0043] 312, card slot; 313, positioning arc surface;

[0044] 400, first elastic member;

[0045] 410, second elastic member; 411, abutting portion; 4111, avoidance slope;

[0046] 500, positioning parts;

[0047] 600, shaft;

[0048] 700, cup-dropping device;

[0049] 710, base;

[0050] 711, Lost Cup Channel;

[0051] 720, baffle;

[0052] 800, measuring device;

[0053] 810, detection unit;

[0054] 820, support frame; 821, support column;

[0055] 830, upper cover;

[0056] 840, inner insulation cotton;

[0057] 850, bottom insulation cotton;

[0058] 900. Mixing device.

[0059] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0060] As described in the background, cuvettes are widely used in in vitro diagnostic equipment as reaction carriers for blood sample testing. In related technologies, during routine use of cuvettes, mechanical grippers are required to facilitate the placement and handling of cuvettes. These grippers typically rely on motors or pneumatic drives to open and close. However, existing mechanical grippers for cuvettes are complex and expensive. Furthermore, the motor or pneumatic drive process is time-consuming, impacting the efficiency of cuvette placement.

[0061] It can be understood that the process of transporting the reaction cup includes grabbing the reaction cup with a gripper, transporting the reaction cup with added samples and reagents to the incubation and measurement module, grabbing the reaction cup after measurement and discarding it. The inventors have found that in the above processes, each time the reaction cup is transported, the gripper needs to be opened and closed once, and each action requires a motor or air circuit drive, which will increase the time for sample detection in the reaction cup, resulting in inefficient sample detection.

[0062] In response to the above technical problems, an embodiment of the present application provides a sample analysis device, in which a gripping device in the sample analysis device can efficiently take and place a reaction cup without being driven by a driving device, thereby improving the efficiency of sample detection in the reaction cup. That is, the guide structure is configured to open the two clamping parts when it abuts against the reaction cup, allowing the reaction cup to enter between the two clamping parts, thereby clamping the reaction cup. The two clamping parts are closed by the first elastic member to clamp the reaction cup.

[0063] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0064] refer to Figure 1 and Figure 2The sample analysis device provided in an embodiment of the present application includes a driving mechanism and a gripping device, wherein the gripping device is connected to the driving mechanism to transport a reaction cup through the gripping device, wherein the gripping device includes: a fixing seat 100, two clamping members 200 and a first elastic member 400; wherein the two clamping members 200 are both connected to the fixing seat 100, at least one of the two clamping members 200 can rotate relative to the fixing seat 100, and a guide structure 300 is provided on the clamping member 200, and the guide structure 300 is configured to open the two clamping members 200 when it abuts against the reaction cup 240, so that the reaction cup 240 enters between the two clamping members 200; the first elastic member 400 is connected between the two clamping members 200, and the first elastic member 400 is used to close the two clamping members 200.

[0065] In this way, the gripping device in the sample analysis equipment can efficiently take and place the reaction cup 240 without being driven by a driving device, thereby improving the efficiency of sample detection in the reaction cup 240. That is, the guide structure 300 is configured to open the two clamping members 200 when it is in contact with the reaction cup 240, so that the reaction cup 240 enters between the two clamping members 200, thereby clamping the reaction cup 240. The first elastic member 400 is used to close the two clamping members 200 to clamp the reaction cup 240.

[0066] Combine Figure 3 As shown, each clamping member 200 has a first side surface 210, a second side surface 260, and a third side surface 270. The first side surface 210 is located on the side of the clamping member 200 away from the fixing base 100, the second side surface 260 and the third side surface 270 are arranged opposite to each other, and the first side surface 210 is located between the second side surface 260 and the third side surface 270. It should be noted that the second side surface 260 of the clamping member 200 is the side facing away from the other clamping member 200, and the third side surface 270 of the clamping member 200 is the side facing the other clamping member 200. Figure 2 As shown, the clamping member 200 further has a first end surface 220 . The first end surface 220 is the upper surface of the clamping member 200 close to the first elastic member 400 and is connected between the second side surface 260 and the third side surface 270 .

[0067] Continue to refer Figure 2In some embodiments, the guide structure 300 is an open groove 310 provided on the first side surface 210 of the clamping member 200, and the open groove 310 extends to the third side surface 270. The inner wall of the open groove 310 has a guide slope 311, and the guide slope 311 extends to the opening of the open groove 310, that is, one end of the guide slope 311 extends to the first side surface 210 of the clamping member 200. Exemplarily, both clamping members 200 are provided with an open groove 310, and accordingly, the inner walls of the open grooves 310 of the two clamping members 200 have guide slopes 311. A flare is formed between the two guide slopes 311 to facilitate guiding the reaction cup 240 to enter between the two clamping members 200, thereby strengthening the guiding effect of the reaction cup 240 entering the open groove 310.

[0068] For example, two clamping members 200 are spaced apart from each other on the fixing base 100, and both clamping members 200 can rotate relative to the fixing base 100. When the guide inclined surface 311 abuts against the reaction cup 240, the two clamping members 200 rotate and open, allowing the reaction cup 240 to enter the opening groove 310. In this way, the guide structure 300 enables the clamping members 200 to clamp the reaction cup 240 more efficiently.

[0069] In some embodiments, combined Figure 3 The inner wall of the opening groove 310 is further provided with a clamping groove 312, which extends to the first side surface 210 of the clamping member 200. The clamping groove 312 is configured to be clamped with the end flange of the reaction cup 240. In this way, the stability of the clamping member 200 in clamping the reaction cup 240 is improved by the provision of the clamping groove 312.

[0070] In some embodiments, the shape of the slot 312 matches the outer contour of the end flange of the reaction cup 240 .

[0071] Exemplarily, the slot 312 is an arc-shaped slot 312, and the reaction cup 240 has an arc-shaped end flange. In this way, the shape of the slot 312 is designed to match the shape of the outer end flange of the reaction cup 240, thereby improving the contact stability between the inner wall of the slot 312 and the end face of the reaction cup 240 and reducing the friction and wear between the two.

[0072] In some embodiments, as Figure 3 As shown, the inner wall of the opening groove 310 also has a positioning arc surface 313. The positioning arc surface 313 is located on the inner wall of the opening groove 310 away from the opening. The positioning arc surface 313 is configured to abut against the side wall of the cup body of the reaction cup 240. In this way, the stability of the grasping device in grasping the reaction cup 240 is further improved.

[0073] In some embodiments, reference Figure 2The gripping device also includes a positioning member 500, which is protruded from the first end surface 220 of the clamping member 200; one end of the first elastic member 400 is connected to the positioning member 500 of one of the clamping members 200, and the other end of the first elastic member 400 is connected to the positioning member 500 of the other clamping member 200.

[0074] Exemplarily, the positioning member 500 is a positioning pin, the first end face 220 of the clamping member 200 is the upper surface of the clamping member 200, the positioning pin is fixed to the upper surface of the clamping member 200, and the first elastic member 400 is a spring, which is elastically connected between the positioning pins on the two clamping members 200. This arrangement provides a connection position for the first elastic member 400, and the structural design is simple.

[0075] In some embodiments, combined Figure 2 and Figure 3 As shown, the grasping device also includes a second elastic member 410, which is fixedly connected to the fixing base 100. The second elastic member 410 has an abutment portion 411 extending toward a side away from the fixing base 100. The abutment portion 411 is used to abut against the top of the reaction cup 240 to limit the axial movement of the reaction cup.

[0076] Exemplarily, the second elastic member 410 is a spring structure, and the second elastic member 410 is roughly L-shaped. One end of the second elastic member 410 is fixedly connected to the fixing seat 100, and the other end extends in a direction roughly parallel to the first end face 220 to form an abutment portion 411, and the abutment portion 411 is located above the reaction cup 240. In this way, the reaction cup 240 located in the opening groove 310 can be axially limited to prevent the reaction cup 240 from moving along its axial direction when the grasping device moves the reaction cup 240. In addition, the static friction between the second elastic member 410 and the upper end of the reaction cup 240 further reduces the radial shaking of the reaction cup 240.

[0077] For example, Figure 3 As shown, the contact portion 411 is further provided with an avoidance slope 4111 , which can prevent the reaction cup 240 from interfering with the second elastic member 410 , so that the reaction cup 240 can smoothly enter between the two clamping members 200 .

[0078] In some embodiments, as Figure 2 and Figure 3 As shown, the gripping device further includes a handle 230, which is fixedly connected to the second side surface 260 of the clamping member 200. The second side surface 260 of one clamping member 200 is the side surface facing away from the other clamping member 200. The handle 230 is used to receive force to drive the clamping members 200 to rotate, so that the two clamping members 200 move away from each other.

[0079] Illustratively, the handle 230 is cylindrical, and the surface of the clamping member 200 facing away from the opening slot 310 has a connecting hole, and one end of the cylindrical handle is inserted into the connecting hole. In this way, the setting of the handle 230 facilitates manual force to separate the two clamping members 200, or, through an additional cup-dropping mechanism that abuts against the handle 230, the handle 230 drives the clamping member 200 to rotate outward to release the reaction cup 240.

[0080] In some embodiments, reference Figure 4 and Figure 5 The sample analysis device also includes a cup dropping device 700, which includes a base 710 and a baffle 720. The baffle 720 is arranged on the base 710, and a cup dropping channel 711 is provided on the base 710. The baffle 720 cooperates with the handle 230, that is, when the transmission arm of the driving mechanism drives the grasping device to move above the cup dropping channel 711, the baffle 720 abuts against the handle 230, and the handle 230 is driven by force to drive the two clamping members 200 to move away from each other, so that the reaction cup 240 falls into the cup dropping channel 711.

[0081] In this way, without manual operation, the physical contact between the baffle 720 of the cup dropping device 700 and the clamping member 200 can prompt the clamping clamp to rotate and release the reaction cup 240, thereby completing the automatic cup dropping process and improving the cup dropping efficiency.

[0082] Combine Figure 1 In some embodiments, the gripping device further includes a limiting member 110, which is fixedly connected to the fixing seat 100, and the limiting member 110 has a limiting portion 111; the limiting portion 111 is located on the rotation path of the clamping member 200, and is constructed to limit the rotation angle of the clamping member 200 when it abuts against the clamping member 200.

[0083] Exemplarily, the limiting member 110 is a plate-like structure, with two first limiting connection holes spaced apart on the limiting member, and two second limiting connection holes spaced apart on the fixing seat 100 corresponding to the limiting connection holes. The limiting member is fixedly connected to the fixing seat 100 by limiting screws passing through the first limiting connection hole and the second limiting connection hole. The limiting plate has a limiting portion 111, and part of the limiting portion 111 covers the top surface of the clamping member 200. The limiting portion 111 has an extension section 1111, which extends from the top of the clamping member 200 to the opening groove 310. When the clamping member 200 rotates a certain angle toward the inside of the opening groove 310, the extension section 1111 abuts against the inner wall of the opening groove 310, thereby better limiting the rotation angle of the clamping member 200 toward the inside to avoid excessive closure of the clamping member 200 and causing structural damage to the reaction cup 240.

[0084] On the basis of the above embodiment, it can be improved that one of the clamping members 200 is provided with a limiting groove 250 on one side relative to the other clamping member 200, the limiting groove 250 is located on the third side 270, the handle 230 is protruded from the second side 260, and the limiting portion 111 extends into the limiting groove 250 to limit the rotation angle of the clamping member 200 when it is closed, thereby further improving the limiting effect of the limiting member 110 on the clamping member 200.

[0085] In some embodiments, combined Figure 1 and Figure 2 As shown, the fixing seat 100 has a positioning boss 120, which protrudes toward the side away from the clamping member 200. The driving mechanism includes a transmission arm 130, and the transmission arm 130 has a positioning side wall. The positioning boss 120 is used to cooperate with the positioning side wall to limit the position, so as to facilitate the installation of the fixing seat 100 to the transmission arm 130.

[0086] Illustratively, two first mounting holes are provided on the fixing base 100 at intervals, and a second mounting hole is provided on the transmission arm 130 corresponding to the first mounting hole. The fixing base 100 is fixed to the moving mechanism by mounting bolts passing through the first mounting holes and the second mounting holes. When the positioning boss 120 abuts against the positioning side wall of the transmission arm, the first mounting hole and the second mounting hole are aligned to fix the fixing base 100 to the transmission arm 130, thereby enhancing the connection stability between the fixing base 100 and the transmission arm, thereby ensuring the movement stability when the driving mechanism moves the reaction cup 240 to grasp the device.

[0087] In some embodiments, as Figure 3 As shown, the gripping device also includes a rotating shaft 600, the clamping member 200 has an axial hole, the fixing seat 100 has a connecting hole, and the rotating shaft 600 is passed through the axial hole and the connecting hole. For example, there are two rotating shafts 600, and both clamping members 200 have an axial hole. The fixing seat 100 is provided with two connecting holes at intervals, and the two connecting holes are arranged in a one-to-one correspondence with the two axial holes. The two rotating shafts 600 are passed through the axial hole and the connecting hole, so that the clamping member 200 can be efficiently rotated and connected to the fixing seat 100, which is beneficial to the opening and closing of the two clamping members 200.

[0088] In some embodiments, combined Figure 6 and Figure 7 The sample analysis equipment also includes a measuring device 800 and a mixing device 900. The measuring device 800 is located on one side of the cup dropping device 700. The measuring device 800 is provided with multiple detection units 810. Each detection unit 810 has a receiving cavity for accommodating a reaction cup. The detection unit 810 can incubate and measure the sample to ensure the accuracy and stability of the reaction, and can control and monitor the temperature and time in the reaction cup; the mixing device is used to mix the materials in the reaction cup.

[0089] Furthermore, the measuring device 800 is stacked with upper cover insulation cotton and upper cover plate 830. The measuring device 800 is an arc-shaped seat, and inner insulation cotton 840 is provided on the inner side of the arc-shaped seat. Furthermore, it also includes a support frame 820. The measuring device 800 is set on the support frame 820, and bottom insulation cotton 850 is provided between the support frame 820 and the measuring device 800. Furthermore, the support frame 820 is connected to the side away from the measuring device 800 with a support column 821. In this way, the setting of multiple insulation cottons ensures the temperature of the reaction cup in the cup slot is stable, which is beneficial to the stability of the biochemical reaction of the sample in the reaction cup, so as to ensure the detection accuracy.

[0090] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 this application.

[0091] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0092] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0093] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0094] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0095] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sample analysis device, comprising a drive mechanism and a gripping device, wherein the gripping device is connected to the drive mechanism to transport a reaction cup, characterized in that: The gripping device comprises: Fixed seat; Two clamping members, both connected to the fixing base, at least one of the two clamping members being rotatable relative to the fixing base, and a guide structure being provided on the clamping members, the guide structure being configured to open the two clamping members when abutting against the reaction cup, so that the reaction cup can enter between the two clamping members; The first elastic member is connected between the two clamping members, and is used to close the two clamping members.

2. The sample analysis device according to claim 1, characterized in that The guide structure is an open groove arranged on the first side surface of the clamping member. The inner wall of the open groove has a guide slope, and the guide slope extends to the opening of the open groove.

3. The sample analysis device according to claim 2, characterized in that: The inner wall of the opening groove is further provided with a clamping groove, which extends to the first side surface of the clamping member and is configured to be clamped with the end flange of the reaction cup.

4. The sample analysis device according to claim 2, characterized in that: The inner wall of the opening groove further has a positioning arc surface, and the positioning arc surface is located at the inner wall of the opening groove away from the opening.

5. The sample analysis device according to any one of claims 1 to 4, characterized in that: The gripping device further includes a positioning member protruding from the first end surface of the clamping member; one end of the first elastic member is connected to the positioning member of one of the clamping members, and the other end of the first elastic member is connected to the positioning member of the other clamping member.

6. The sample analysis device according to any one of claims 1 to 4, characterized in that: The grabbing device further includes a second elastic member fixedly connected to the fixing seat. The second elastic member has an abutting portion extending toward a side away from the fixing seat to limit the axial movement of the reaction cup.

7. The sample analysis device according to any one of claims 1 to 4, characterized in that: The gripping device further comprises a handle, which is fixedly connected to the clamping member. The handle is subjected to a force to drive the clamping member to rotate, so that the two clamping members move in a direction away from each other.

8. The sample analysis device according to claim 7, characterized in that: It also includes a cup dropping device, which includes a base and a baffle. The baffle is arranged on the base, and a cup dropping channel is provided on the base. The baffle cooperates with the handle to move the two clamping parts in a direction away from each other so that the reaction cup falls into the cup dropping channel.

9. The sample analysis device according to any one of claims 1 to 4, characterized in that: The gripping device further includes a limiting member, the limiting member is fixedly connected to the fixing seat, and the limiting member has a limiting portion; The limiting portion is located on the rotation path of the clamping member and is configured to limit the rotation angle of the clamping member when abutting against the clamping member.

10. The sample analysis device according to claim 9, characterized in that: A limiting groove is provided on one side of one of the clamping members relative to the other clamping member, and the limiting portion extends into the limiting groove to limit the rotation angle of the clamping members when they are closed.

11. The sample analysis device according to any one of claims 1 to 4, characterized in that: The fixing seat has a positioning boss, which protrudes toward a side away from the clamping member. The driving mechanism includes a transmission arm, which has a positioning side wall. The positioning boss is used to cooperate with the positioning side wall to limit the position.

12. The sample analysis device according to any one of claims 1 to 4, characterized in that: It also includes a rotating shaft, the clamping member has an axial hole, the fixing seat has a connecting hole, and the rotating shaft is passed through the axial hole and the connecting hole, so that the clamping member is rotatably connected to the fixing seat.

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