Clamping device and sample analyzer

Abstract

The utility model relates to the technical field of mechanical grippers, in particular to a clamping device and a sample analyzer. The clamping device comprises a fixing frame, a driving mechanism and a clamping mechanism; the clamping mechanism comprises a first clamping assembly, a second clamping assembly and a pre-tightening piece, and the driving mechanism is used for driving the push block to move towards the clamping mechanism, so that the first abutting slope abuts against the first guide wheel, the second abutting slope abuts against the second guide wheel, and the first clamping piece and the second clamping piece are far away from each other. According to the clamping device, the driving assembly is adopted to drive the pushing block to be matched with the first guide wheel and the second guide wheel in the clamping mechanism, when the pushing block moves, the two clamping pieces can be driven to move in the direction away from each other so as to release the reaction cup, and the pre-tightening piece can drive the two clamping pieces to move towards each other and grasp the reaction cup. The whole device is simple, low in manufacturing and maintenance cost and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical grippers, in particular to a clamping device and a sample analyzer. Background Art

[0002] In the field of mechanical grippers, various types of gripping devices are widely used in industrial and medical equipment to achieve the gripping and movement of objects. Hydraulic, pneumatic and electric grippers are currently used in the market. Each type has its advantages and limitations. For example, hydraulic grippers require high manufacturing precision and sealing performance, and are prone to leakage and contamination; pneumatic grippers are difficult to control speed and generate noise; and electric grippers are relatively expensive. It can be seen that the technical problems existing in the prior art mainly include high manufacturing costs, difficulty in control, and easy leakage and contamination.

[0003] Therefore, it is necessary to improve the above problems to change the current situation. Utility Model Content

[0004] The utility model provides a clamping device and a sample analyzer, which are used to solve the problems of high manufacturing cost, great control difficulty, easy leakage and easy pollution of mechanical clamping devices in the prior art.

[0005] The utility model provides a clamping device, comprising:

[0006] Fixed frame;

[0007] The driving mechanism comprises a driving assembly and a push block, wherein the driving assembly is connected to the fixing frame, the push block is connected to the output end of the driving assembly, and the driving assembly is used to drive the push block to move relative to the fixing frame, and the two sides of the push block are respectively provided with a first abutting inclined surface and a second abutting inclined surface;

[0008] The clamping mechanism comprises a first clamping component, a second clamping component and a pre-tightening member, wherein the first clamping component comprises a first clamping component and a first guide wheel connected to the first clamping component, the second clamping component comprises a second clamping component and a second guide wheel connected to the second clamping component, the first clamping component and the second clamping component are respectively movably connected to the fixing frame, the pre-tightening member is respectively connected to the first clamping component and the second clamping component, and provides a pre-tightening force for the first clamping component and the second clamping component to approach each other;

[0009] Wherein, the driving mechanism is used to drive the push block to move toward the clamping mechanism, so that the first abutting slope abuts against the first guide wheel, and the second abutting slope abuts against the second guide wheel, so as to achieve the mutual distance between the first clamping member and the second clamping member.

[0010] According to one embodiment of the utility model, the first clamping member includes a first movable part connected to the first guide wheel and a first bearing part connected to the first movable part, the second clamping member includes a second movable part connected to the second guide wheel and a second bearing part connected to the second movable part, the first movable part and the second movable part are also respectively connected to the fixed frame for sliding connection, and the first bearing part and the second bearing part cooperate with each other to carry or release the reaction cup.

[0011] According to one embodiment of the utility model, the first bearing part forms a first limiting surface and a first accommodating space, and the second bearing part forms a second limiting surface and a second accommodating space, the first limiting surface and the second limiting surface are respectively used to abut and limit with one axial end of the reaction cup, and the first accommodating space and the second accommodating space are respectively used to accommodate part of the reaction cup.

[0012] According to an embodiment of the present invention, the pre-tightening member comprises a tension spring, and opposite ends of the tension spring are respectively connected to the first moving part and the second moving part; or,

[0013] The pre-tightening member includes a first magnetic member and a second magnetic member, wherein the first magnetic member is connected to the first moving part, and the second magnetic member is connected to the second moving part.

[0014] According to one embodiment of the utility model, the clamping mechanism also includes a sliding member, which includes a first slider, a second slider and a guide rail, the first slider is connected to the first moving part, the second slider is connected to the second moving part, the guide rail is arranged on the fixed frame, and the first slider and the second slider are respectively slidably matched with the guide rail.

[0015] According to an embodiment of the utility model, the clamping mechanism further includes a first sensor component and a second sensor component, the first sensor component is used to obtain a position signal of the push block; the second sensor component is used to obtain a relative position signal of the two clamping members.

[0016] According to one embodiment of the utility model, the first sensing assembly includes a first sensor and a first sensing member, the first sensor and the first sensing member are inductively matched, one of the first sensor and the first sensing member is connected to the fixing frame, and the other of the first sensor and the first sensing member is connected to the push block.

[0017] According to one embodiment of the utility model, the second sensing assembly includes a second sensor and a second sensing member, the second sensor and the second sensing member are inductively matched, one of the first clamping member and the second clamping member is connected to the second sensor, and the other of the first clamping member and the second clamping member is connected to the second sensing member.

[0018] According to one embodiment of the utility model, the fixing frame includes a connecting part and a fixing part, the connecting part is connected to the fixing part; the driving assembly includes a motor and a push rod, the motor is installed on the connecting part, one end of the push rod is dynamically connected to the motor, and the other end is connected to the push block, the first clamping member and the second clamping member are respectively slidably matched with the fixing part; and / or the first guide wheel and the second guide wheel are rubber-coated rollers.

[0019] The utility model also provides a sample analyzer, comprising:

[0020] detection device; and

[0021] As described in any one of the above-mentioned clamping devices, wherein the clamping device is used to move the reaction cup loaded with the sample to be tested to the detection position, so that the detection device can detect the sample to be tested.

[0022] Implementing the embodiments of the utility model has the following beneficial effects:

[0023] In the clamping device of this embodiment, a driving assembly is used to drive the push block to cooperate with the first guide wheel and the second guide wheel in the clamping mechanism. When the push block moves, the two clamping members can be driven to move away from each other to release the reaction cup. The pre-tightening member can drive the two clamping members to move toward each other and grasp the reaction cup. The overall structure is simple, the manufacturing and maintenance costs are low, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] in:

[0026] Figure 1 is a three-dimensional view of a clamping device in an embodiment of the utility model;

[0027] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0028] Figure 3 It is a front view schematic diagram of the clamping device in the embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of a partial structure of a clamping device in an embodiment of the utility model;

[0030] Figure 5 is a schematic diagram of another viewing angle of the clamping device in the embodiment of the utility model;

[0031] Figure 6 It is a structural schematic diagram of a clamping member in an embodiment of the utility model;

[0032] Reference numerals:

[0033] 10. Clamping device;

[0034] 100, fixing frame; 110, connecting portion; 120, fixing portion;

[0035] 200, driving mechanism; 210, driving assembly; 211, motor; 212, push rod; 220, push block; 221, first abutting inclined surface; 222, second abutting inclined surface;

[0036] 300, clamping mechanism; 310, first clamping assembly; 311, first clamping member; 3111, first moving part; 3112, first bearing part; 31121, first limiting surface; 31122, first accommodating space; 3113, first positioning pin; 312, first guide wheel; 320, second clamping assembly; 321, second clamping member; 3211, second moving part; 3212, second bearing part; 32121, second limiting surface; 32122, second accommodating space; 3213, second positioning pin; 322, second guide wheel; 330, preload member; 340, sliding member; 341, first slider; 342, second slider; 343, guide rail;

[0037] 400, first sensing component; 410, first sensor; 420, first sensing element;

[0038] 500, second sensing assembly; 510, second sensor; 520, second sensing element;

[0039] 20. Reaction cup. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] See also Figures 1 to 6 As shown, the embodiment of the utility model provides a clamping device 10, which includes a fixed frame 100, a driving mechanism 200 and a clamping mechanism 300; the fixed frame 100 serves as a mounting carrier for the driving mechanism 200 and the clamping mechanism 300 and is used to connect with an external component; the driving mechanism 200 includes a driving component 210 and a push block 220, the driving component 210 is connected to the fixed frame 100, the push block 220 is connected to the output end of the driving component 210, and the driving component 210 is used to drive the push block 220 to move relative to the fixed frame 100, and the two sides of the push block 220 are respectively provided with a first abutting inclined surface 221 and a second abutting inclined surface 222; the clamping mechanism 300 includes a first clamping component 310, a second clamping component 320 and a preload 330, and the first clamping component 310 includes a second clamping component 320 and a preload 330. A clamping member 311 and a first guide wheel 312 connected to the first clamping member 311, the second clamping assembly 320 includes a second clamping member 321 and a second guide wheel 322 connected to the second clamping member 321, the first clamping member 311 and the second clamping member 321 are respectively movably connected to the fixed frame 100, the pre-tightening member 330 is respectively connected to the first clamping member 311 and the second clamping member 321, and provides a pre-tightening force for the first clamping member 311 and the second clamping member 321 to approach each other; wherein the driving mechanism 200 is used to drive the push block 220 to move toward the clamping mechanism 300, so that the first abutting inclined surface 221 abuts against the first guide wheel 312, and the second abutting inclined surface 222 abuts against the second guide wheel 322, so as to realize the first clamping member 311 and the second clamping member 321 to move away from each other.

[0042] In the clamping device 10 of the present embodiment, the driving assembly 210 is used to drive the push block 220 to cooperate with the guide wheel 320 of the clamping mechanism 300. When the push block 220 moves, the two clamping members 310 can be driven to move away from each other to release the reaction cup 20. The pre-tightening member 330 can drive the two clamping members 310 to move toward each other and grasp the reaction cup 20. The overall structure is simple, the manufacturing and maintenance costs are low, and it is easy to use.

[0043] In some embodiments, the first abutting inclined surface 221 and the second abutting inclined surface 222 can be a plane or a curved surface, or a plane connected to a curved surface, which is not limited here; for example, when the reaction cup 20 needs to be released, the push block 220 drives the first guide wheel 312 and the second guide wheel 322 to contact and drive the first guide wheel 312 and the second guide wheel 322 to move away from each other through the first abutting inclined surface 221 and the second abutting inclined surface 222, so that the first clamping component 310 and the second clamping component 320 can release the reaction cup 20; when the first abutting inclined surface 221 and the second abutting inclined surface 222 have a curved surface portion When moving, the curvature of the curved surface can be set according to the expected movement trajectory of the first clamping component 310 and the second clamping component 320 so that the first clamping component 310 and the second clamping component 320 can move at a preset speed; of course, the curved surface can also be used to position the first guide wheel 312 and the second guide wheel 322. For example, when the first clamping component 310 and the second clamping component 320 move to the preset position, the curved surface structure on the first abutting slope 221 and the second abutting slope 222 can be engaged with the first guide wheel 312 and the second guide wheel 322 to position the first clamping component 310 and the second clamping component 320.

[0044] Specifically, the first clamping member 311 includes a first movable portion 3111 connected to the first guide wheel 312 and a first bearing portion 3112 connected to the first movable portion 3111. The second clamping member 321 includes a second movable portion 3211 connected to the second guide wheel 322 and a second bearing portion 3212 connected to the second movable portion 3211. The first movable portion 3111 and the second movable portion 3211 are also respectively slidably connected to the fixed frame 100. The first bearing portion 3112 and the second bearing portion 3212 cooperate with each other to carry or release the reaction cup 20.

[0045] In this embodiment, when the first clamping member 311 is movably connected to the fixing frame 100 through the first movable portion 3111, when the first bearing portion 3112 is worn and needs maintenance or the clamping device 10 is used for reaction cups 20 of different models, the clamping member 310 can be easily replaced, and the second clamping member 321 is also the same; when the clamping mechanism 300 grabs or releases the reaction cup 20, the reaction cup 20 can be clamped and released by the first bearing portion 3112 and the second bearing portion 3212 under the driving action of the driving mechanism 200.

[0046] See also Figure 6As shown, in one embodiment, the first bearing portion 3112 is formed with a first limiting surface and a first accommodating space 31122, and the second bearing portion 3212 is formed with a second limiting surface 32121 and a second accommodating space 32122, the first limiting surface 32121 and the second limiting surface 32121 are respectively used to abut against one axial end of the reaction cup 20 for limiting, and the first accommodating space 31122 and the second accommodating space 32122 are respectively used to accommodate parts of the reaction cup 20.

[0047] According to the configuration, when the clamping mechanism 300 cooperates with the reaction cup 20, it is accommodated in the first accommodating space 31122 and the second accommodating space 32122 and applies pressure in the axial direction of the reaction cup 20 through the first bearing portion 3112 and the second bearing portion 3212 to achieve the fixing function; specifically, the reaction cup 20 can be a cylinder, and the cross-sections of the first accommodating space 31122 and the second accommodating space 32122 are also arc-shaped. When the first clamping member 311 and then the second clamping member 321 are close to each other, the inner walls of the first accommodating space 31122 and the second accommodating space 32122 can abut against the outer wall of the reaction cup 20 to achieve the grasping and fixing function, and the first limiting surface 32121 and the second limiting surface 32121 are provided to abut against the reaction cup 20. 0, after the reaction cup 20 enters the first accommodating space 31122 and the second accommodating space 32122, the axial movement of the reaction cup 20 can be limited by the first limiting surface and the second limiting surface 32121, so as to avoid the first bearing part 3112 and the second bearing part 3212 covering the reaction cup 20 as a whole, so as to facilitate the subsequent placement and movement; of course, under normal circumstances, the reaction cup 20 is at least partially located in the first accommodating space 31122 and the second accommodating space 32122, for example, the cup mouth of the reaction cup 20 is usually located in the first accommodating space 31122 and the second accommodating space 32122, but the cup bottom of the reaction cup 20 can be partially located outside the first accommodating space 31122 and the second accommodating space 32122

[0048] Further, see Figure 5 As shown, the pre-tightening member 330 includes a tension spring, and the opposite ends of the tension spring are respectively connected to the first movable part 3111 and the second movable part 3211; or, the pre-tightening member 330 includes a first magnetic member and a second magnetic member, the first magnetic member is connected to the first movable part 3111, and the second magnetic member is connected to the second movable part 3211.

[0049] In this embodiment, when the tension spring in the pre-tightening member 330 can drive the first bearing portion 3112 and the second bearing portion 3212 to move in a direction close to each other under the action of elasticity, so as to realize the function of resetting the clamping and applying pressure toward the reaction cup 20, specifically, when clamping the reaction cup 20, first, the driving component 210 drives the push block 220 to move and drives the two clamping members 310 to move in a direction away from each other, at which time the pre-tightening member 330 stretches and stores elastic potential energy, and then moves the clamping mechanism 300 to the reaction cup 20 so that the reaction cup 20 is located between the first accommodating space 31122 and the second accommodating space 32122; after the driving component 210 drives the push block 220 to move in the opposite direction, the pre-tightening member 330 can release the elastic potential energy and drive the two clamping members 310 to move in a direction close to each other, at which time the reaction cup 20 can be clamped by the two clamping members 310 under the elastic force of the pre-tightening member 330. In some embodiments, the first clamping assembly 310 further includes a first positioning pin 3113 , which is detachably connected to the first movable portion 3111 , and opposite ends of the tension spring are respectively connected to the first positioning pin 3113 and the second positioning pin 3213 .

[0050] When the pre-tightening member 330 adopts the first magnetic member and the second magnetic member, the magnetic force between the first magnetic member and the second magnetic member can also realize the function of driving the first clamping component 310 and the second clamping member 321 to reset and clamp the reaction cup 20.

[0051] Specifically, see Figure 3 and Figure 4 As shown, the clamping mechanism 300 also includes a sliding member 340, and the sliding member 340 includes a first slider 341, a second slider 342 and a guide rail 343. The first slider 341 is connected to the first movable part 3111, the second slider 342 is connected to the second movable part 3211, and the guide rail 343 is arranged on the fixed frame 100. The first slider 341 and the second slider 342 are respectively slidably matched with the guide rail 343.

[0052] In this embodiment, the guide rail 343 is detachably connected to the fixing frame 100 for disassembly and subsequent maintenance. The first moving part 3111 is slidably matched with the guide rail 343 through the first slider 341, and the second moving part 3211 is slidably matched with the guide rail 343 through the second slider 342, so as to guide and limit the movement of the clamping member 310, that is, to ensure that the first clamping component 310 and the second clamping component 320 can move in a direction perpendicular to the movement direction of the push block 220 to achieve the gripping and releasing functions. Specifically, the first slider 341 and the second slider 342 can share a guide rail 343, or the first slider 341 and the second slider 342 can each cooperate with a guide rail 343, which is not limited here.

[0053] Further, see Figure 1and Figure 3 As shown, the clamping mechanism 300 further includes a first sensor assembly 400 and a second sensor assembly 500. The first sensor assembly 400 is used to obtain a position signal of the push block 220; the second sensor assembly 500 is used to obtain a relative position signal of the two clamping members.

[0054] In this configuration, the first sensor assembly 400 and the second sensor assembly 500 can be connected to the control module of the clamping device 10 or an external control module, the first sensor assembly 400 can obtain the position signal of the push block 220, and the second sensor assembly 500 can obtain the relative position signal between the two clamping members 310. By comparing and calculating the two position signals, the control module can judge the gripping state of the clamping mechanism 300, so as to realize the automatic control function of the clamping device 10. Specifically, the control module can be, but is not limited to, various PLCs (Programmable Logic Controllers, full name Programmable Logic Controller), STM32 (STM32 microcontroller, a 32-bit microcontroller with ARM Cortex-M core), single-chip microcomputer, FPGA (Field Programmable Gate Array, full name Field Programmable Gate Array), ARM (ARM processor, full name Advanced RISC Machi ne), etc.

[0055] Specifically, see Figure 2 and Figure 3 As shown, the first sensing assembly 400 includes a first sensor 410 and a first sensing member 420. The first sensor 410 and the first sensing member 420 are inductively matched. One of the first sensor 410 and the first sensing member 420 is connected to the fixing frame 100, and the other of the first sensor 410 and the first sensing member 420 is connected to the push block 220.

[0056] In this embodiment, the first sensing element 420 can be connected to the push block 220, and the first sensor 410 can be fixed on the fixed frame 100. When the driving component 210 drives the push block 220 to move, it can drive the first sensing element 420 to move in the sensing position of the first sensor 410 and obtain the position signal of the first sensing element 420; the first sensor 410 can be a slot-type optical coupling sensor, and when the first sensing element 420 moves, the light in the first sensor 410 can be shielded to realize the sensing function of the first sensor 410, thereby realizing the function of judging the position signal of the push block 220.

[0057] Specifically, see Figure 3 and Figure 4As shown, the second sensing component 500 includes a second sensor 510 and a second sensing element 520, the second sensor 510 and the second sensing element 520 cooperate with each other in sensing, one of the first clamping element 311 and the second clamping element 321 is connected to the second sensor 510, and the other of the first clamping element 311 and the second clamping element 321 is connected to the second sensing element 520.

[0058] In this embodiment, the second sensing element 520 can be connected to one of the first clamping element 311 and the second clamping element 321, and the second sensor 510 can be fixed to the other of the first clamping element 311 and the second clamping element 321. When the two clamping mechanisms 300 of the driving mechanism 200 move relative to each other, the second sensing element 520 can be driven to move in the sensing position of the second sensor 510 and obtain the position signal of the second sensing element 520; the second sensor 510 can be a slot-type optical coupling sensor, and when the second sensing element 520 moves, the light in the second sensor 510 can be shielded to realize the sensing function of the second sensor 510, thereby realizing the function of judging the relative position between the first clamping component 310 and the second clamping component 320.

[0059] See also Figure 4 and Figure 5 As shown, in one embodiment, the fixing frame 100 includes a connecting portion 110 and a fixing portion 120, and the connecting portion 110 is connected to the fixing portion 120; the driving assembly 210 includes a motor 211 and a push rod 212, the motor 211 is installed on the connecting portion 110, one end of the push rod 212 is dynamically connected to the motor 211, and the other end is connected to the push block 220, the first clamping member 311 and the second clamping member 321 are respectively slidably matched with the fixing portion 120; and / or the first guide wheel 312 and the second guide wheel 322 are rubber-coated rollers.

[0060] By this arrangement, the driving mechanism 200 and the clamping mechanism 300 can be located on the same side of the fixing part 120, so that the overall structure of the clamping device 10 is compact and the fixing frame 100 is conveniently connected to the external component. In addition, when the first guide wheel 312 and the second guide wheel 322 are rubber-coated rollers, the impact force between the push block 220 and the first guide wheel 312 and the second guide wheel 322 can be reduced, and the friction between the two contacting parts can be increased. When the push block 220 contacts the first guide wheel 312 and the second guide wheel 322, it can be ensured that the first guide wheel 312 and the second guide wheel 322 are driven to rotate relative to the first clamping member 311 and the second clamping member 321, respectively, so as to avoid relative friction between the push block 220 and the first guide wheel 312 and the second guide wheel 322, and the clamping mechanism 300 moves smoothly.

[0061] The utility model also provides a sample analyzer, which includes a detection device and a clamping device 10 in any one of the above embodiments, the detection device is used to detect the sample to be tested in the reaction cup 20; the clamping device 10 is used to move the reaction cup 20 loaded with the sample to be tested to the detection position, so that the detection device can detect the sample to be tested.

[0062] It can be understood that, in the sample analyzer of the present embodiment, by setting the clamping device 10 in any one of the above embodiments, the clamping device 10 drives the push block 220 to cooperate with the first guide wheel 312 and the second guide wheel 322 of the clamping mechanism 300 by using the driving component 210. When the push block 220 moves, the first clamping member 311 and the second clamping member 321 can be driven to move away from each other to release the reaction cup 20. The pre-tightening member 330 can drive the first clamping member 311 and the second clamping member 321 to move toward each other and grasp the reaction cup 20. The overall structure is simple, the manufacturing and maintenance costs of the sample analyzer are low, and it is easy to use.

[0063] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0064] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0065] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature 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. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A clamping device, characterized in that: include: Fixed frame; The driving mechanism comprises a driving assembly and a push block, wherein the driving assembly is connected to the fixing frame, the push block is connected to the output end of the driving assembly, and the driving assembly is used to drive the push block to move relative to the fixing frame, and the two sides of the push block are respectively provided with a first abutting inclined surface and a second abutting inclined surface; The clamping mechanism comprises a first clamping component, a second clamping component and a pre-tightening member, wherein the first clamping component comprises a first clamping component and a first guide wheel connected to the first clamping component, the second clamping component comprises a second clamping component and a second guide wheel connected to the second clamping component, the first clamping component and the second clamping component are respectively movably connected to the fixing frame, the pre-tightening member is respectively connected to the first clamping component and the second clamping component, and provides a pre-tightening force for the first clamping component and the second clamping component to approach each other; Wherein, the driving mechanism is used to drive the push block to move toward the clamping mechanism, so that the first abutting slope abuts against the first guide wheel, and the second abutting slope abuts against the second guide wheel, so as to achieve the mutual distance between the first clamping member and the second clamping member.

2. The clamping device according to claim 1, characterized in that: The first clamping member includes a first movable part connected to the first guide wheel and a first bearing part connected to the first movable part, and the second clamping member includes a second movable part connected to the second guide wheel and a second bearing part connected to the second movable part. The first movable part and the second movable part are also respectively connected to the fixed frame in a sliding manner, and the first bearing part and the second bearing part cooperate with each other to carry or release the reaction cup.

3. The clamping device according to claim 2, characterized in that: The first bearing part is formed with a first limiting surface and a first accommodating space, and the second bearing part is formed with a second limiting surface and a second accommodating space. The first limiting surface and the second limiting surface are respectively used to abut against one axial end of the reaction cup for limiting position, and the first accommodating space and the second accommodating space are respectively used to accommodate part of the reaction cup.

4. The clamping device according to claim 2, characterized in that: The pre-tightening member comprises a tension spring, and opposite ends of the tension spring are respectively connected to the first moving part and the second moving part; or, The pre-tightening member includes a first magnetic member and a second magnetic member, wherein the first magnetic member is connected to the first moving part, and the second magnetic member is connected to the second moving part.

5. The clamping device according to claim 2, characterized in that: The clamping mechanism also includes a sliding member, which includes a first slider, a second slider and a guide rail. The first slider is connected to the first moving part, the second slider is connected to the second moving part, and the guide rail is arranged on the fixed frame. The first slider and the second slider are respectively slidably matched with the guide rail.

6. The clamping device according to claim 1, characterized in that: The clamping mechanism further comprises a first sensor assembly and a second sensor assembly, wherein the first sensor assembly is used to obtain a position signal of the push block; and the second sensor assembly is used to obtain a relative position signal of the two clamping members.

7. The clamping device according to claim 6, characterized in that: The first sensing assembly includes a first sensor and a first sensing member, the first sensor and the first sensing member are inductively matched, one of the first sensor and the first sensing member is connected to the fixing frame, and the other of the first sensor and the first sensing member is connected to the pushing block.

8. The clamping device according to claim 6, characterized in that: The second sensing assembly includes a second sensor and a second sensing member, the second sensor and the second sensing member are inductively matched, one of the first clamping member and the second clamping member is connected to the second sensor, and the other of the first clamping member and the second clamping member is connected to the second sensing member.

9. The clamping device according to claim 1, characterized in that: The fixing frame includes a connecting portion and a fixing portion, wherein the connecting portion is connected to the fixing portion; the driving assembly includes a motor and a push rod, wherein the motor is installed on the connecting portion, one end of the push rod is dynamically connected to the motor, and the other end is connected to the push block, and the first clamping member and the second clamping member are respectively slidably matched with the fixing portion; And / or the first guide wheel and the second guide wheel are rubber-coated rollers.

10. A sample analyzer, characterized in that: include: Detection device; as well as The clamping device according to any one of claims 1 to 9, wherein the clamping device is used to move a reaction cup loaded with a sample to be tested to a detection position so that the detection device can detect the sample to be tested.

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