CN210954075U - Crown block mechanism of automatic enzyme-linked immunoassay analyzer - Google Patents

Abstract

The utility model discloses an overhead traveling crane mechanism of an automatic enzyme-linked immunoassay analyzer, which has simple structure and simple and convenient operation. The crown block mechanism comprises an x-direction component for driving a liquid transfer device of the automatic enzyme-linked immunoassay analyzer to move along an x direction, a y-direction component for driving the liquid transfer device to move along a y direction and a z-direction component for driving the liquid transfer device to move along a z direction; the y-direction component is arranged on the x-direction component, and the z-direction component is arranged on the y-direction component.

Description

Crown block mechanism of automatic enzyme-linked immunoassay analyzer

Technical Field

The utility model belongs to the technical field of analysis and detection, a overhead traveling crane mechanism of automatic enzyme-linked immunoassay analyzer is related to.

Background

The detection principle of enzyme-linked immunoassay is to use the combination of antibody and enzyme complex and then detect by color development. The enzyme linked immunoassay analyzer based on the detection principle can be used for screening allergens and the like. However, the existing enzyme-linked immunoassay analyzer has the defects of low automation degree, large instrument size and the like, and the detection efficiency is influenced. Some improvements based on these problems have been made, for example, chinese patent application CN109030809A discloses an automatic analyzer for allergen IgE antibody. This chinese patent application CN109030809A discloses an allergen IgE antibody autoanalyzer, including reaction vessel strorage device, sample introduction device, allergen reagent storage device, detection reagent storage device, transfer device and reaction detection device, reaction vessel strorage device sample introduction device allergen reagent storage device with detection reagent storage device encircles the reaction detection device sets up. The above automatic analyzer for allergen IgE antibody employs a transfer device to add reagent, and specifically, the rotary rocker arm dispensing mechanism is used to achieve liquid suction and liquid transfer, and the rotary rocker arm dispensing mechanism has a complex structure and is complicated to operate.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the utility model provides an automatic overhead traveling crane mechanism of enzyme-linked immunoassay analyzer, its simple structure and easy and simple to handle.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the crown block mechanism comprises an x-direction component for driving a liquid transfer device of the automatic enzyme-linked immunoassay analyzer to move along an x direction, a y-direction component for driving the liquid transfer device to move along a y direction and a z-direction component for driving the liquid transfer device to move along a z direction; the y-direction component is arranged on the x-direction component, and the z-direction component is arranged on the y-direction component.

Preferably, the x-direction assembly comprises an overhead traveling crane plate, an x-direction slider arranged on the overhead traveling crane plate in a manner of sliding along the x-direction, and a second motor used for driving the x-direction slider to slide along the x-direction relative to the overhead traveling crane plate; the y-direction assembly comprises a second mounting plate fixedly arranged on the x-direction sliding block, a y-direction sliding block arranged on the second mounting plate in a y-direction sliding mode and a third motor used for driving the y-direction sliding block to slide along the y-direction relative to the second mounting plate; the z-direction assembly comprises a third mounting plate, a sliding plate and a fourth motor, the sliding plate is used for driving the liquid transfer device to lift along the z direction, the fourth motor is used for driving the sliding plate to slide along the z direction relative to the third mounting plate, the third mounting plate is fixedly arranged on the y-direction sliding block, and the sliding plate can be movably arranged on the third mounting plate along the z direction sliding block.

More preferably, an x-direction slide rail extending along the x direction is fixedly arranged on the overhead traveling crane board, the x-direction slide block is in sliding fit with the x-direction slide rail, and the second motor is connected with the x-direction slide block through a synchronous belt transmission mechanism.

More preferably, the second mounting plate is fixedly provided with a y-direction slide rail extending along a y direction, the y-direction slide block is in sliding fit with the y-direction slide rail, the y-direction assembly further comprises a second lead screw driven to rotate by the third motor, and the y-direction slide block is in threaded fit with the second lead screw.

More preferably, the second lead screw extends along the y direction and is rotatably arranged on the second mounting plate around the axis of the second lead screw, the second lead screw and a synchronous wheel are coaxially arranged, the third motor is arranged at the lower part of the second mounting plate, a motor shaft of the third motor is connected with the other synchronous wheel, and the two synchronous wheels are provided with a synchronous belt in a tensioning manner.

More preferably, a nut is sleeved on the second lead screw, the nut is in threaded fit connection with the second lead screw, and the nut is fixedly connected to the y-direction sliding block.

More preferably, the fourth motor is a linear motor, and a motor shaft of the linear motor is connected to the sliding plate.

The utility model adopts the above scheme, compare prior art and have following advantage:

the utility model discloses an among the overhead traveling crane mechanism for automatic enzyme-linked immunoassay appearance, realize the removal in the three dimension of liquid-transfering device to subassembly, y to subassembly and z through x, simple structure and easy and simple to handle.

Drawings

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

FIG. 1 is a schematic perspective view of an enzyme-linked immunoassay analyzer according to an embodiment;

FIG. 2 is another schematic perspective view of the ELISA analyzer of the embodiment, wherein the reagent card tray device is in the loading position;

FIG. 3 is an exploded schematic view of an enzyme-linked immunoassay analyzer of an embodiment, wherein the housing is not shown;

FIG. 4 is a top view of an enzyme linked immunoassay analyzer of an embodiment, wherein the housing is not shown;

FIG. 5 is a front view of the enzyme linked immunoassay analyzer of the embodiment, wherein the housing is not shown;

FIG. 6 is a schematic perspective view of a reagent card tray apparatus according to an embodiment;

FIG. 7 is an exploded schematic view of a reagent card tray apparatus of an embodiment;

FIG. 8 is an exploded view of the crown block mechanism of the embodiment;

FIG. 9 is a partial cross-sectional view of a y-directed component of an embodiment;

FIG. 10 is a partially further exploded schematic view of the pipetting device of an embodiment;

fig. 11 is a partial sectional view of the pipetting device of the embodiment.

In the above-described figures of the drawings,

1. a frame; 10. a housing; 101. a door; 11. a first motor; 12. a first lead screw; 13. a first guide member;

2. a reagent card tray device; 2a, a reagent card tray unit; 20. a first mounting plate; 21. a heat insulation plate; 22. heating plates; 23. a reaction tank; 24. a reagent tank; 25. buckling; 26. a rotating shaft; 27. a suction head storage; 28. a waste material box; 29. a conductive joint;

3. a crown block mechanism; 3a, x-direction components; 3b, y-direction components; 3c, z-direction components; 30. a ceiling plate; 301. an x-direction slide rail; 31. an x-direction slider; 32. a second motor; 320. a synchronous belt transmission mechanism; 33. a second mounting plate; 331. a y-direction slide rail; 34. a y-direction slider; 35. a third motor; 351. a synchronizing wheel; 352. a synchronous belt; 353. a second lead screw; 354. a nut; 36. a third mounting plate; 361. a z-direction guide rail; 37. a sliding plate; 371. connecting holes; 372. a long groove; 38. a fourth motor;

4. a pipetting device; 40. a suction head seat; 41. a micro pump; 42. a damping plate; 421. connecting holes; 422. a long groove; 43. a buffer spring; 44. an unloading head;

5. a detection device; 51. an optical detection mechanism; 52. a fifth motor; 53. a second guide member;

x, a suction head; s, reagent card.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, enables the advantages and features of the invention to be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the present embodiment, the x direction, the y direction, and the z direction refer to directions represented by x, y, and z axes constituting a rectangular spatial coordinate system, where the x direction and the y direction are two directions extending along a horizontal plane and perpendicular to each other, respectively, and the z direction is a vertical direction.

Figures 1-11 show an automated enzyme linked immunoassay analyzer for screening for allergens. Referring to fig. 1-5, the elisa instrument mainly comprises a reagent card tray device 2, a crown block mechanism 3, a liquid-transferring device 4 and a detecting device 5, wherein the reagent card tray device 2, the crown block mechanism 3, the liquid-transferring device 4 and the detecting device 5 are all integrated on a frame 1. The enzyme-linked immunoassay analyzer also comprises a shell 10 which covers the periphery of the frame 1, and in a normal working state, the reagent card tray device 2, the crown block mechanism 3, the liquid-moving device 4 and the detection device 5 are all covered in the shell 10.

The reagent card tray device 2 is mainly used for mounting a reagent card S, and a reaction device, a reagent hole, and the like are integrated in the reagent card S. The reaction device in this embodiment specifically adopts the solid phase carrier for enzyme linked immunosorbent assay disclosed in chinese patent CN 206684168U. As shown in fig. 6 and 7, the reagent card tray device 2 includes one or more reagent card tray units 2a arranged in parallel, and in this embodiment, preferably includes a plurality of (ten as shown in fig. 6) reagent card tray units 2a arranged in parallel in the x direction. Each reagent card tray unit 2a can detachably mount one reagent card S, and each reagent card tray unit 2a includes a reaction hole site for receiving a reaction vessel of the reagent card and a reagent hole site for receiving a reagent hole, respectively.

Specifically, as shown in fig. 7, each reagent card tray unit 2a includes a reaction tank 23, a reagent tank 24, and a buckle 25 sequentially arranged along the y-direction, a reaction hole is formed in the reaction tank 23, a reagent hole is formed in the reagent tank 24, the buckle 25 has a first end portion for abutting against a reagent card, the buckle 25 is rotatably disposed on an outer side wall of the reagent tank 24 through a rotating shaft 26, the buckle 25 further has a second end portion, the rotating shaft 26 is located between the first end portion and the second end portion, and an elastic member (not shown in the figure) is disposed between the second end portion of the buckle 25 and the reagent tank 24. Specifically, the reaction device on the reagent card is inserted into the reaction groove 23, the reagent hole on the reagent card is inserted into the reagent groove 24, and the first end of the catch 25 is inserted into the hole of the reagent card to fit the reaction groove 23 and the reagent groove 24 to fix the reagent card on the reagent card tray unit 2 a. The mounting hole has been seted up on the lateral wall of reagent groove 24, and in the second end of buckle 25 inserted the mounting hole, the elastic component specifically was for locating the pressure spring in the mounting hole, and the upper end of this pressure spring supports on the last pore wall of mounting hole, and the lower extreme supports on the second end of buckle 25 to provide the elastic force of chucking reagent card for buckle 25.

The reagent card tray device 2 further comprises a first mounting plate 20, a heat insulation plate 21, a heating plate 22, a suction head storage 27 and a waste material box 28. The heat insulation plate 21 is fixedly arranged on the first installation plate 20, the heating plate 22 is fixedly arranged on the heat insulation plate 21, and the three are fixed through screws. The reaction wells 23 of the respective reagent card tray units 2a are fixedly provided on the heating plate 22, and the reagent wells 24 are fixedly provided on the first mounting plate 20 with a gap from the reaction wells 23. The reaction device in the reaction tank 23 is heated by the heating plate 22 to facilitate the reaction; and the reagent well 24 is directly mounted on the first mounting plate 20 with a gap from the reaction well 23, so that the influence of the heating plate 22 on the reagent in the reagent well 24 can be reduced. In this embodiment, the reaction tank 23 is made of aluminum, and the reagent tank 24 is made of plastic. The reagent card tray device 2 further comprises an electrically conductive connector 29 for supplying power to the heating plate 22, which is capable of being brought into contact with a power supply on the housing 1. A tip storage 27 and a waste box 28 are fixedly provided on the first mounting plate 20, a plurality of tips to be used are stored in the tip storage 27, and the waste box 28 is used for storing the used tips.

The reagent card tray device 2 is provided on the rack 1 so as to be movable in the y direction. The housing 10 is provided with a door 101 through which the reagent card tray device 2 passes, and the reagent card tray device 2 has an operating position (shown in fig. 1) inside the housing 10 and a loading position (shown in fig. 2) outside the housing 10. When a new reagent card and a new suction head need to be installed, the whole reagent card tray device 2 is drawn out, and the used suction head can be conveniently loaded or cleaned. As shown in fig. 2 and 6, the first mounting plate 20 is movably disposed at the lower portion of the frame 1 along the y-direction. The enzyme-linked immunoassay analyzer also comprises a first motor 11 used for driving the reagent card tray device 2 to slide along the y direction and a first lead screw 12 driven by the first motor 11 to rotate, wherein the first motor 11 is arranged on the rack 1, the first lead screw 12 can be rotationally arranged on the rack 1 around the axis line of the first lead screw 12 and extends along the y direction, the first mounting plate 20 is in threaded fit with the first lead screw 12, and the first mounting plate 20 moves along the y direction along with the rotation of the first lead screw 12. A pair of first guide components 13 arranged oppositely is fixedly connected to the frame 1, the first guide components 13 extend along the y direction, and the first mounting plate 20 is arranged between the pair of first guide components 13 and two side ends of the first mounting plate are respectively in sliding fit with the first guide components 13. The first guiding member 13 in this embodiment is a drawer slide similar to a ball slide used in a drawer, and is not described herein.

A limiting mechanism is arranged between the first mounting plate 20 and the frame 1. The limiting mechanism comprises a limiting shaft sleeve (not shown in the figure) fixedly arranged on the first mounting plate 20 and a limiting pin (not shown in the figure) arranged on the rack 1, and when the reagent card tray device 2 slides to the working position, the limiting pin is inserted into the limiting shaft sleeve to prevent the reagent card tray device from continuously moving and ensure the repeated precision of the position. Furthermore, when the reagent card tray device 2 is in the working position, the conductive connector 29 for supplying power to the heating plate 22 can be in contact with the power supply on the rack 1.

Referring to fig. 3, the crown block mechanism 3 is configured to drive the pipetting device 4 to move; the pipetting device 4 comprises a tip holder 40 for loading tips X taken from a tip stock 27, which is capable of performing pipetting operations, such as taking liquids from reagent wells and adding them to the reaction device; the detection device 5 comprises an optical detection mechanism 51 which is movable relative to the gantry 1. The enzyme-linked immunoassay analyzer has a liquid adding state and a detection state. When the enzyme linked immunoassay analyzer is in a liquid adding state, the optical detection mechanism 51 deviates from the position right above the reaction groove 23, and the pipette seat 40 is provided with a position right facing the reagent groove 24 so as to pipette the reagent from the reagent hole; the pipette tip holder 40 also has a position facing the reaction well 23 to feed the pipetted reagent into the reaction device. When the ELISA is in the detection state, the optical detection mechanism 51 is located right above the reaction tank 23 for detection. In this embodiment, the tip holder 40 also has a position at the tip storage magazine 27 for loading tips and a position at the waste magazine 28 for unloading tips. The pipetting device 4 is driven by the crown block mechanism 3 to move between the above-described respective positions.

Referring to fig. 3 and 8, the crown block mechanism 3 includes an x-direction component 3a for moving the pipetting device 4 in the x direction, a y-direction component 3b for moving the pipetting device 4 in the y direction, and a z-direction component 3c for moving the pipetting device 4 in the z direction. Preferably, the x-direction unit 3a is provided on the rack 1, the y-direction unit 3b is provided on the x-direction unit 3a, the z-direction unit 3c is provided on the y-direction unit 3b, and the pipetting device 4 is provided on the z-direction unit 3 c.

As shown in fig. 8, the x-direction assembly 3a includes an upper plate 30 fixedly disposed on the illustrated machine frame 1, an x-direction slider 31 slidably disposed on the upper plate 30 along the x-direction, and a second motor 32 for driving the x-direction slider 31 to slide along the x-direction relative to the upper plate 30. In this embodiment, a pair of x-direction slide rails 301 extending along the x-direction is fixedly disposed on the crown block plate 30, the two x-direction sliders 31 are respectively in sliding fit with the x-direction slide rails 301, and the second motor 32 is connected with the x-direction sliders 31 through a synchronous belt transmission mechanism 320. When the second motor 32 operates, the synchronous belt transmission mechanism 320 drives the x-direction slider 31 to move along the x-direction slide rail 301.

As shown in fig. 8 and 9, the y-direction component 3b includes a second mounting plate 33 fixedly disposed on the x-direction slider 31, a y-direction slider 34 slidably disposed on the second mounting plate 33 along the y-direction, and a third motor 35 for driving the y-direction slider 34 to slide along the y-direction relative to the second mounting plate 33. In this embodiment, the second mounting plate 33 is fixed to the two x-direction sliders 31 by screws, a y-direction slide rail 331 extending along the y-direction is fixed to the second mounting plate 33, and the y-direction slider 34 and the y-direction slide rail 331 are in sliding fit with each other. The y-direction component 3b further comprises a second lead screw 353 driven by the third motor 35 to rotate. Specifically, the second lead screw 353 extends along the y direction and is rotatably disposed on the second mounting plate 33 around the axis thereof, the second lead screw 353 and a synchronous wheel 351 are coaxially and fixedly disposed, the third motor 35 is mounted at the lower portion of the second mounting plate 33, a motor shaft of the third motor 35 is connected with the other synchronous wheel 351 and can drive the synchronous wheel 351 to rotate, the two synchronous wheels 351 are provided with a synchronous belt 352 in a tensioned manner, and transmission is performed through the synchronous belt 352, so that the second lead screw 353 can rotate along with the third motor 35 when the third motor 35 operates. The second lead screw 353 is sleeved with a nut, the nut 354 is connected with the second lead screw 353 in a threaded fit manner, and the nut 354 is fixedly connected to the y-direction slider 34, so that the y-direction slider 34 and the second lead screw 353 can be matched through threads, and when the second lead screw 353 rotates, the y-direction slider 34 can move along the y-direction slide rail 331.

Referring to fig. 8, the z-direction assembly 3c includes a third mounting plate 36, a sliding plate 37 for driving the pipetting device 4 to move up and down along the z-direction, and a fourth motor 38 for driving the sliding plate 37 to slide along the z-direction relative to the third mounting plate 36. The third mounting plate 36 is fixedly provided on the y-direction slider 34, the slide plate 37 is movably provided on the third mounting plate 36 along the z-direction slider, and the liquid transfer device 4 is specifically provided on the slide plate 37. Specifically, the fourth motor 38 is a linear motor, and a motor shaft of the linear motor is connected to the sliding plate 37. A z-guide rail 361 extending in the z-direction is fixedly provided on the third mounting plate 36, and the slide plate 37 is slidably engaged with the z-guide rail 361. When the fourth motor 38 is operated, the slide plate 37 is lifted along the z-guide rail 361.

Referring to fig. 10 and 11, the pipetting device 4 includes a tip holder 40, and the tip holder 40 has a lower end portion which is engaged with the tip and can be inserted into the tip. The suction head base 40 is provided with an air flow channel for communicating with the suction head, that is, the suction head base 40 is hollow, and negative pressure for sucking liquid and positive pressure for discharging liquid can be provided for the suction head through the air flow channel. The pipetting device 4 further comprises a micro pump 41 for providing the negative pressure and the positive pressure, and the tip holder 40 is communicatively arranged on the micro pump 41. In this embodiment, the upper end of the pipette tip holder 40 is connected to the micro pump 41 by a screw, and the pipette tip holder 40 is screwed into the micro pump 41. The micro pump 41 is connected to the slide plate 37 through a damping plate 42 to be able to ascend and descend in the z direction.

The damping plate 42 is connected to the sliding plate 37 and can move a certain distance along the z-direction relative to the sliding plate 37, and a buffer spring 43 is disposed between the damping plate 42 and the sliding plate 37 to provide buffer for the sucker base 40. Specifically, the damping plate 42 and the sliding plate 37 are connected by a connecting pin (typically, a step screw), the damping plate 42 and the sliding plate 37 are respectively provided with connecting holes 421 and 371 through which the connecting pin passes, and at least the connecting holes on the damping plate 42 or the sliding plate 37 are kidney-shaped holes or long holes extending along the z-direction. In this embodiment, the connection hole 371 of the sliding plate 37 is a waist-shaped hole extending along the z-direction, so that the damping plate 42 can move up and down a slight distance relative to the sliding plate 37, which is smaller than the length of the waist-shaped hole. Furthermore, the damping plate 42 and the sliding plate 37 are respectively and correspondingly provided with elongated slots 422 and 372 extending along the z direction, the two elongated slots are aligned and overlapped, the buffer spring 43 is positioned in the two elongated slots, the upper end of the buffer spring 43 is connected with the sliding plate 37, and the lower end of the buffer spring 43 is connected with the damping plate 42.

The liquid-transfering device 4 also includes an unloading head 44 which can move relative to the micro pump 41, the unloading head 44 is provided with a through hole for the suction head seat 40 to pass through, the aperture of the through hole is smaller than the outer diameter of the suction head, and the suction head seat 40 is arranged in the through hole in a penetrating way. The unloading head 44 is slidably fitted over the lower end portion of the micro pump 41 and is connected to the micro pump 41 or the damping plate 42 via a plurality of springs. The pipetting device 4 further comprises an unloading section formed on the third mounting plate 36, the unloading head 44 being located below the unloading section. After the pipetting device 4 moves up by one end, the unloading head 44 moves to a position where it is in close contact with the lower end of the unloading section, and is stopped by the unloading section, the unloading head 44 stops moving up, and the micro pump 41 and the pipette tip holder 40 continue to move up by the driving of the fourth motor 38, so that the pipette tip on the pipette tip holder 40 is dropped by the relative movement between the unloading head 44 and the pipette tip holder 40.

As shown in fig. 3 to 5, the optical detection mechanism 51 is movably disposed in the x direction. The optical detection mechanism 51 in the present embodiment specifically includes an integrating sphere detection device. The detecting device 5 further includes a second guiding member 53 extending along the x-direction, the optical detecting mechanism 51 is slidably disposed on the second guiding member 53 along the x-direction, and the detecting device 5 further includes a fifth motor 52 for driving the optical detecting mechanism 51 to move. The second guiding component 53 is specifically an x-direction guiding rail fixedly arranged on the frame 1 and extending along the x direction, the fifth motor 52 drives a third lead screw to rotate through a synchronous belt transmission mechanism, the third lead screw extends along the x direction, and the optical detection mechanism 51 is slidably arranged on the x-direction guiding rail and is in threaded fit with the third lead screw. When the fifth motor is operated, the optical detection mechanism 51 moves along the x-direction guide rail, and can move above each reaction vessel 23 to detect the movement.

The working process of the automatic enzyme-linked immunoassay analyzer is as follows:

drawing out the reagent card tray device 2 to the outside of the casing 10, mounting reagent cards on each reagent card tray unit 2a, loading new tips in the tip stocker 27 for standby, and then pushing the reagent card tray device 2 back into the casing 10;

the y-direction component 3b of the crown block mechanism 3 acts to move the suction head seat 40 to the position right above a certain suction head to be used in the suction head storage 27; the z-direction component 3c acts to move the liquid-moving device 4 downwards to the pipette seat 40 and insert the pipette head into the pipette head, and the loading of the pipette head is completed; the z-direction component 3c moves reversely, the suction head seat 40 moves upwards, and the suction head is carried out from the hole position of the suction head storage 27;

the y-direction component 3b acts reversely to move the sucker seat 40 carrying the sucker to the upper part of the reagent groove 24; the x-direction component 3a acts to move the sucker seat 40 carrying the sucker to the position right above the reagent hole of a certain reagent card; the execution sequence of the two processes can be exchanged;

the z-direction component 3c is operated to insert the suction head into the reagent in the reagent well; the micro pump 41 acts to provide negative pressure for the suction head, and the reagent is sucked into the suction head; the z-direction component 3c moves to move the sucker out of the reagent groove 24;

the y-direction component 3b continues to move reversely, so that the suction heads carrying the reagents move to the positions right above the corresponding reaction grooves 23; the z-direction component 3c moves to make the suction head move downwards to the upper part of the reaction device; the micro pump 41 is reversely operated to inject the reagent in the suction head into the reaction device; the z-direction component 3c moves reversely to move the sucker out of the reagent groove 24;

when the suction head needs to be replaced, the used suction head is moved to the position right above the waste material groove through the action of the x-direction component 3a and the y-direction component 3b, the action of the z-direction component 3c enables the micro pump 41, the suction head seat 40 and the suction head to move upwards together, after a certain displacement is moved, the unloading head 44 on the suction head seat 40 is blocked by the unloading plate, the unloading head 44 stops moving upwards, at the moment, the suction head seat 40 continues moving upwards under the drive of the z-direction component 3c, and the suction head is separated from the suction head seat 40 and falls into the waste material box 28 below; the tip seat 40 is moved to the upper side of the tip storage 27 by the operation of the x-direction unit 3a and the y-direction unit 3b, and the above steps are repeated.

The automatic enzyme-linked immunoassay analyzer can realize full-automatic operation of enzyme-linked immunoassay, reduce manual intervention and improve the correctness and reliability of a test result; and the structure is compact, the layout is reasonable, and the volume is reduced. In addition, the reagent card and the suction head can be installed outside the casing 10, and the use is convenient.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred embodiments, which are intended to enable persons skilled in the art to understand the contents of the present invention and to implement the present invention, and thus, the protection scope of the present invention cannot be limited thereby. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (7)

1. The crown block mechanism of the automatic enzyme-linked immunoassay analyzer is characterized in that: the overhead traveling crane mechanism comprises an x-direction component for driving a liquid transfer device of the automatic enzyme-linked immunoassay analyzer to move along the x direction, a y-direction component for driving the liquid transfer device to move along the y direction and a z-direction component for driving the liquid transfer device to move along the z direction; the y-direction component is arranged on the x-direction component, and the z-direction component is arranged on the y-direction component.

2. The crown block mechanism according to claim 1, characterized in that: the x-direction assembly comprises an overhead traveling crane plate, an x-direction sliding block which is arranged on the overhead traveling crane plate in a manner of sliding along the x direction, and a second motor which is used for driving the x-direction sliding block to slide along the x direction relative to the overhead traveling crane plate; the y-direction assembly comprises a second mounting plate fixedly arranged on the x-direction sliding block, a y-direction sliding block arranged on the second mounting plate in a y-direction sliding mode and a third motor used for driving the y-direction sliding block to slide along the y-direction relative to the second mounting plate; the z-direction assembly comprises a third mounting plate, a sliding plate and a fourth motor, the sliding plate is used for driving the liquid transfer device to lift along the z direction, the fourth motor is used for driving the sliding plate to slide along the z direction relative to the third mounting plate, the third mounting plate is fixedly arranged on the y-direction sliding block, and the sliding plate can be movably arranged on the third mounting plate along the z direction sliding block.

3. The crown block mechanism according to claim 2, characterized in that: the overhead traveling crane is characterized in that an x-direction sliding rail extending along the x direction is fixedly arranged on the overhead traveling crane plate, the x-direction sliding block is in sliding fit with the x-direction sliding rail, and the second motor is connected with the x-direction sliding block through a synchronous belt transmission mechanism.

4. The crown block mechanism according to claim 2, characterized in that: the fixed y that is provided with along y to the extension on the second mounting panel is to the slide rail, y to the slider with y is to slide rail looks sliding fit, y still include to the subassembly by third motor drive pivoted second lead screw, y to the slider with the second lead screw passes through screw-thread fit.

5. The crown block mechanism according to claim 4, characterized in that: the second lead screw extends along the y direction and can set up in around self axial lead rotation on the second mounting panel, second lead screw and a synchronizing wheel coaxial arrangement, the third motor install in the lower part of second mounting panel, the motor shaft and another synchronizing wheel of third motor are connected, and two the tensioning is provided with the hold-in range on the synchronizing wheel.

6. The crown block mechanism according to claim 4, characterized in that: the second lead screw is sleeved with a nut, the nut is in threaded fit with the second lead screw, and the nut is fixedly connected with the y-direction sliding block.

7. The crown block mechanism according to claim 2, characterized in that: the fourth motor is a linear motor, and a motor shaft of the linear motor is connected with the sliding plate.

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