WO2022241801A1 - 加样机构及分析仪 - Google Patents

加样机构及分析仪 Download PDF

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Publication number
WO2022241801A1
WO2022241801A1 PCT/CN2021/095378 CN2021095378W WO2022241801A1 WO 2022241801 A1 WO2022241801 A1 WO 2022241801A1 CN 2021095378 W CN2021095378 W CN 2021095378W WO 2022241801 A1 WO2022241801 A1 WO 2022241801A1
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Prior art keywords
sample
sample adding
needle
disk
rotating shaft
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PCT/CN2021/095378
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English (en)
French (fr)
Inventor
甘宜梧
朱立国
王波
温英利
李爱玲
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山东博科生物产业有限公司
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Publication of WO2022241801A1 publication Critical patent/WO2022241801A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1065—Multiple transfer devices
    • G01N35/1067—Multiple transfer devices for transfer to or from containers having different spacing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1004—Cleaning sample transfer devices

Definitions

  • the invention relates to the technical field of in vitro diagnostic instruments, in particular to a sample adding mechanism and an analyzer.
  • the invention provides a sample adding mechanism and an analyzer capable of increasing the analysis speed without increasing the number of test module machines.
  • a sample adding mechanism comprising a bracket and at least three sample adding needle mechanisms, the bracket is provided with a vertical drive mechanism for controlling the up and down movement of each sample adding needle mechanism and a horizontal drive mechanism for simultaneously controlling all the sample adding needle mechanisms to rotate simultaneously mechanism, the horizontal driving mechanism drives all the sampling needle mechanisms to rotate once, and each sampling needle mechanism moves to the top of the cleaning disk, the sample disk and the reaction disk in sequence.
  • the sampling needle mechanism includes a rotating shaft drivingly connected to the vertical driving mechanism, a cross arm fixedly connected to the end of the rotating shaft, and a sampling needle fixedly connected to the cross arm.
  • the horizontal driving mechanism includes a first motor arranged on the support, a rotating disk connected to the output end of the first motor, a guide sleeve is fixedly arranged inside the rotating disk, and the guide sleeve An axial opening groove is arranged on the side wall, and a boss matching the opening groove is arranged on the outer edge of the rotating shaft.
  • cross-section of the rotating shaft is elliptical.
  • the vertical driving mechanism includes a second motor and a transmission mechanism connected to the output end of the second motor, and the transmission mechanism is fixedly connected to the rotating shaft.
  • bracket is provided with a first photoelectric switch
  • transmission mechanism is provided with a first photoelectric switch blocking piece matched with the first photoelectric switch
  • bracket is provided with a second photoelectric switch
  • rotating disk is provided with a second photoelectric switch blocking piece matched with the second photoelectric switch
  • a code disc is arranged on the second motor.
  • An analyzer comprising a cleaning tray, a sample tray, a reaction tray and any of the above-mentioned sample loading mechanisms.
  • the present invention has the following beneficial effects:
  • the sample adding mechanism and the analyzer of the present invention control its up and down movement by configuring an independent vertical drive mechanism for each sample adding needle mechanism, and all the sample adding needle mechanisms are controlled by a horizontal drive mechanism to rotate simultaneously and stay on the cleaning tray and the sample tray respectively.
  • (Reagent disk) and the top of the reaction disk realize the function of time-sequential sampling by multiple sampling needle mechanisms, which can be cleaned and sampled while adding samples, saving the running time of the sampling mechanism in a cycle and improving the efficiency of each cycle.
  • the number of internal sample additions greatly improves the analysis speed of the analyzer for samples.
  • the present invention can improve the analysis speed of the low-speed analyzer without adding a testing machine module, and the cost is relatively low.
  • Fig. 1 is the structural representation of sample loading mechanism of the present invention
  • Fig. 2 is the sectional structure schematic diagram of sample loading mechanism of the present invention
  • Fig. 3 is the sectional structure schematic diagram of sample loading mechanism of the present invention.
  • Fig. 4 is the top view of sample loading mechanism of the present invention.
  • FIG. 5 is a schematic diagram of the connection between the rotating shaft and the guide sleeve in the sample loading mechanism of the present invention
  • Fig. 6 is a schematic structural view of the analyzer of the present invention.
  • the present invention provides a sample adding mechanism, as shown in Fig. 1 to Fig. 5, comprising a bracket 1 and at least three sample adding needle mechanisms 4, and the bracket 1 is provided with a device for controlling each sample adding needle mechanism 4 to move up and down respectively.
  • the vertical driving mechanism 2 and the horizontal driving mechanism 3 that controls all the sampling needle mechanisms 4 to rotate at the same time, the horizontal driving mechanism 3 controls all the sampling needle mechanisms 4 to rotate once, and each sampling needle mechanism 4 moves to the cleaning tray 5, sample Above the plate 6 and the reaction plate 7.
  • a biochemical analyzer containing a cleaning tray 5, a sample tray 6 and a reaction tray 7 is taken as an example to introduce the working principle of the sample loading mechanism.
  • the sampling needle mechanism 4 can be designed as three, respectively named the first sampling needle mechanism 4-1, the second sampling needle mechanism 4 and the second sampling needle mechanism 4-2, and the corresponding vertical driving mechanism 2 Respectively named as the first vertical driving mechanism 2-1, the second vertical driving mechanism 2-2 and the third vertical driving mechanism 2-3, the working cycle is as follows:
  • the first sampling needle mechanism 4-1, the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 respectively rotate to the cleaning tray 5, sample Above the plate 6 and the reaction plate 7. Afterwards, the first sampling needle mechanism 4-1 performs the action of cleaning the inner and outer needles, and the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 do not work.
  • the first sampling needle mechanism 4-1, the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 rotate to the sample disk 6, reaction Plate 7 and wash the top of plate 5.
  • the first vertical drive mechanism 2-1 controls the first sampling needle mechanism 4-1 to descend to the designated position, and the first sampling needle mechanism 4-1 and the third sampling needle mechanism 4-3 perform sampling and cleaning work respectively
  • the first vertical drive mechanism 2-1 controls the first sampling needle mechanism 4-1 to rise to the designated position.
  • the second injection needle mechanism 4-2 does not work.
  • the first sampling needle mechanism 4-1, the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 are respectively rotated to the reaction disk 7, cleaning Plate 5 and sample plate 6 above.
  • the first vertical drive mechanism 2-1 and the third vertical drive mechanism 2-3 respectively drive the first sampling needle mechanism 4-1 and the third sampling needle mechanism 4-3 down to the designated position, and the first sampling needle The mechanism 4-1 and the third sampling needle mechanism 4-3 carry out the sample adding and sampling work respectively.
  • the first vertical driving mechanism 2-1 and the third vertical driving mechanism 2-3 respectively drive the first sampling needle mechanism 4-1 and the third needle mechanism 4-3 rise to the designated position.
  • the second needle feeding mechanism 4-2 only performs the action of cleaning the inner and outer needles, and the second vertical driving mechanism 2-2 does not work.
  • the first sampling needle mechanism 4-1, the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 rotate to the cleaning tray 5, sample Above the plate 6 and the reaction plate 7.
  • the second vertical driving mechanism 2-2 and the third vertical driving mechanism 2-3 respectively drive the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 down to the designated position, and the second sampling needle mechanism 4 -2 and the third sampling needle mechanism 4-3 carry out the sampling and sample adding work respectively.
  • the second vertical driving mechanism 2-2 and the third vertical driving mechanism 2-3 respectively drive the second sampling needle mechanism 4- 2 and the third needle mechanism 4-3 rise to the designated position.
  • the first needle feeding mechanism 4-1 only performs the action of cleaning the inner and outer needles, and the first vertical driving mechanism 2-1 does not work.
  • the first sampling needle mechanism 4-1, the second sampling needle mechanism 4-2 and the third sampling needle mechanism 4-3 are respectively rotated to the sample disk 6, reaction Plate 7 and wash the top of plate 5.
  • the first vertical driving mechanism 2-1 and the second vertical driving mechanism 2-2 respectively drive the first sampling needle mechanism 4-1 and the second sampling needle mechanism 4-2 to the designated position, and the first sampling needle mechanism 4 -1 and the second sampling needle mechanism 4-2 carry out the sampling and sample adding work respectively.
  • the first vertical driving mechanism 2-1 and the second vertical driving mechanism 2-2 respectively drive the first sampling needle mechanism 4- 1 and the second needle mechanism 4-2 rise to the designated position.
  • the third needle mechanism 4-3 only cleans the inner and outer needles, and the third vertical drive mechanism 2-3 does not work.
  • the sampling needle mechanism 4 sequentially executes the actions of the 3rd to 5th cycles.
  • the sampling mechanism of the present invention controls its up and down movement by configuring an independent vertical drive mechanism 2 for each sampling needle mechanism 4, and all the sampling needle mechanisms 4 are controlled by a horizontal driving mechanism 3 while rotating and staying on the cleaning tray respectively. 5.
  • the function of multiple sampling needle mechanisms for 4-point sequential sampling can be realized, and cleaning and sampling can be performed while adding samples, which saves the running time of the sampling mechanism in a cycle and improves the efficiency.
  • the number of times of adding samples in each cycle greatly improves the analysis speed of the analyzer for samples.
  • the sampling needle mechanism 4 preferably includes a rotating shaft 4-1-3 that is drivingly connected to the vertical driving mechanism 2, a cross arm 4-1-1 that is fixedly connected to the end of the rotating shaft 4-1-3, and A sampling needle 4-1-2 fixedly connected with the cross arm 4-1-1.
  • the vertical drive mechanism 2 can control the rotating shaft 4-1-3 to move up and down so that the sampling needle 4-1-2 enters the reaction cup in the reaction disk 7 and the sample disk 6, so as to complete the sample adding and sampling work.
  • the horizontal drive mechanism 3 may adopt a motor drive structure.
  • the horizontal drive mechanism 3 includes a first motor 3-1 arranged on the support 1, connected to the output end of the first motor 3-1
  • the rotating disk 3-2, the rotating disk 3-2 is fixedly provided with a guide sleeve 3-3, the side wall of the guide sleeve 3-3 is provided with an opening groove 3-3-1 in the axial direction, and the rotating shaft 4-1-
  • the outer edge of 3 is provided with a boss 4-1-4 matched with the opening groove 3-3-1. The cooperation between the boss 4-1-4 and the opening groove 3-3-1 can make the rotating shaft 4-1-3 move horizontally while restricting the radial movement between the rotating shaft 4-1-3 and the guide sleeve 3-3.
  • the relative guide sleeve 3-3 moves up and down.
  • the sample needle mechanism 4 can either rotate horizontally under the control of the horizontal driving mechanism 3 , or move up and down under the control of the vertical driving mechanism 2 . Furthermore, independent up and down movement of each sampling needle mechanism 4 is realized, and all the sampling needle mechanisms 4 can be rotated simultaneously.
  • connection between the first motor 3-1 and the rotating disk 3-2 can be either gear transmission or belt transmission.
  • the number of rotating shafts 4-1-3 corresponds to the number of sample needle mechanisms 4, the number of rotating shafts 4-1-3 is at least three, in order to ensure that each rotating shaft 4-1-3 Can move up and down stably, the guide sleeve 3-3 can play a guiding role for each rotating shaft 4-1-3, the cross section of the rotating shaft 4-1-3 can be designed as an ellipse, and the rotating shaft 4-1-3 can be increased The matching area with the guide sleeve 3-3, wherein the ellipse size can be determined according to the quantity of the rotating shaft 4-1-3 and the diameter of the guide sleeve 3-3.
  • the vertical drive mechanism 2 may also adopt a motor drive structure.
  • the vertical drive mechanism 2 includes a second motor 2-1-1 arranged on the support 1, and a second motor 2-1-1.
  • the transmission mechanism 2-1-2 connected to the output end of 1, the transmission mechanism 2-1-2 is fixedly connected with the boss 4-3-1.
  • the transmission mechanism 2-1-2 may also adopt a belt transmission structure, and the connection between the rotating shaft 4-1-3 and the transmission mechanism 2-1-2 is realized through the fixed connection between the boss 4-3-1 and the belt.
  • each rotating shaft 4-1-3 can A first photoelectric switch (not shown) is provided, and a first photoelectric switch blank 2-4 matched with the first photoelectric switch is provided on the bracket 1 .
  • the second photoelectric switch (not shown) can also be set on the rotating disk 3-2, and the second photoelectric switch blank 3-4 matched with the second photoelectric switch is set on the support 1;
  • a code disc is set on the motor 3-1 to measure the rotation angle of the first motor 3-1, and finally the sampling needle mechanism 4 can accurately stay above the cleaning disc 5, the sample disc 6 and the reaction disc 7.
  • the present invention also provides an analyzer, as shown in FIGS. 1 to 6 , comprising a cleaning tray 5 , a sample tray 6 , a reaction tray 7 and any of the above-mentioned sample adding mechanisms.
  • the analyzer of the present invention controls its up and down movement by configuring an independent vertical drive mechanism 2 for each sample needle mechanism 4, and all sample needle mechanisms 4 are controlled by a horizontal drive mechanism 3 to rotate and stay on the cleaning tray 5 and the sample tray respectively.
  • 6 and the top of the reaction disk 7, realize the function of multiple sampling needle mechanism 4-point time-sequential sampling, which can clean and sample while adding samples, save the time of running the sampling mechanism in the cycle, and improve the efficiency of each cycle.
  • the number of times of adding samples greatly improves the analysis speed of the analyzer for samples.

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Abstract

一种加样机构及分析仪，涉及体外诊断仪器技术领域。加样机构包括支架（1）和至少三个加样针机构（4），支架（1）上设置有分别控制每个加样针机构（4）上下移动的垂直驱动机构（2）和同时控制所有加样针机构（4）同时转动的水平驱动机构（3），水平驱动机构（3）驱动所有加样针机构（4）转动一次，每个加样针机构（4）依次运动至清洗盘（5）、样本盘（6）和反应盘（7）的上方。该加样机构和分析仪能够在不增加测试模块机的前提下提高分析速度。

Description

加样机构及分析仪 技术领域
本发明涉及体外诊断仪器技术领域，具体涉及一种加样机构及分析仪。
背景技术
在目前医疗器械领域中，如生化分析仪、化学发光分析仪(测定仪)等均需要加样、取样和清洗的步骤，这些步骤需要加样机构完成。而现有市场上常规分析仪的测速在现有的结构基础上，很难有较高的提升，只能依靠增加测试模块机数量来提高测速，但成本较高，普及率低。对于相对低测速的分析仪，也无法进行模块机的组合，导致速度提升空间有限。如果大批量的人群体检，常规速度的分析仪满足不了要求只能更换速度较高的分析仪，无疑会增加诊疗机构的负担。
发明内容
本发明提供一种能够在不增加测试模块机的前提下能够提高分析速度的加样机构及分析仪。
为解决上述技术问题，本发明提供技术方案如下：
一种加样机构，包括支架和至少三个加样针机构，所述支架上设置有分别控制每个加样针机构上下移动的垂直驱动机构和同时控制所有加样针机构同时转动的水平驱动机构，所述水平驱动机构驱动所有加样针机构转动一次，每个加样针机构依次运动至清洗盘、样本盘和反应盘的上方。
进一步的，所述加样针机构包括与所述垂直驱动机构驱动连接的转轴，与所述转轴的端部固定连接的横臂以及与所述横臂固定连接的加样针。
进一步的，所述水平驱动机构包括设置于所述支架上的第一电机、与所述第一电机的输出端连接的旋转盘，所述旋转盘内固定设置有导向套， 所述导向套的侧壁上设置有轴向方向的开口槽，所述转轴的外缘上设置有与所述开口槽相配合的凸台。
进一步的，所述转轴的横截面为椭圆形。
进一步的，所述垂直驱动机构包括第二电机以及与第二电机的输出端连接的传动机构，所述传动机构与转轴固定连接。
进一步的，所述支架上设置有第一光电开关，所述传动机构上设置有与所述第一光电开关相配合的第一光电开关挡片。
进一步的，所述支架上设置有第二光电开关，所述旋转盘上设置有与所述第二光电开关相配合的第二光电开关挡片；
或者，所述第二电机上设置有码盘。
一种分析仪，包括清洗盘、样本盘、反应盘以及上述任一所述的加样机构。
与现有技术相比，本发明具有以下有益效果：
本发明的加样机构及分析仪通过对每个加样针机构配置独立的垂直驱动机构控制其上下移动，所有加样针机构由一个水平驱动机构控制进行同时转动分别停留在清洗盘、样本盘(试剂盘)和反应盘的上方，实现多个加样针机构分时序采样的功能，能够在加样的同时进行清洗和取样，节约了加样机构周期内运行的时间，提高了每个周期内加样的次数，大幅度提高了分析仪对样本的分析速度。
本发明无需增加测试机模块即可提高了对于低速分析仪的分析速度，成本相对较低。
附图说明
图1为本发明的加样机构的结构示意图；
图2为本发明的加样机构的剖视结构示意图；
图3为本发明的加样机构的剖视结构示意图；
图4为本发明的加样机构的俯视图；
图5为本发明的加样机构中转轴与导向套的连接示意图；
图6为本发明的分析仪的结构示意图。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
一方面，本发明提供一种加样机构，如图1至图5所示，包括支架1和至少三个加样针机构4，支架1上设置有分别控制每个加样针机构4上下移动的垂直驱动机构2和控制所有加样针机构4同时转动的水平驱动机构3，水平驱动机构3控制所有加样针机构4转动一次，每个加样针机构4依次运动至清洗盘5、样本盘6和反应盘7的上方。
由于反应盘7的转动是周期性，所有加样针机构4也需要在周期内完成相应动作，每个加样针机构4在一个周期内转动相应的角度，分别停留在清洗盘5、样本盘6和反应盘7上方进行清洗、取样、加样工作。
本发明一实施例中以含有一个清洗盘5、样本盘6和反应盘7的生化分析仪为例介绍加样机构的工作原理，当生化分析仪含有一个清洗盘5、样本盘6和反应盘7时，加样针机构4可设计为3个，分别取名第一加样针机构4-1、二加样针机构4和第二加样针机构4-2，对应的垂直驱动机构2分别取名为第一垂直驱动机构2-1、第二垂直驱动机构2-2和第三垂直驱动机构2-3，工作周期如下：
第1个周期，第一加样针机构4-1、第二加样针机构4-2和第三加样针机构4-3在水平驱动机构3的控制下分别转动至清洗盘5、样本盘6和反应盘7的上方。之后，第一加样针机构4-1进行清洗内外针动作，第二加样针机构4-2和第三加样针机构4-3不工作。
第2个周期，第一加样针机构4-1、第二加样针机构4-2和第三加样针机构4-3在水平驱动机构3的控制下分别转动至样本盘6、反应盘7和清洗盘5的上方。之后，第一垂直驱动机构2-1控制第一加样针机构4-1下降至指定位置，第一加样针机构4-1和第三加样针机构4-3分别进行取样和清洗工作，完成后，第一垂直驱动机构2-1控制第一加样针机构4-1 上升至指定位置。在该周期内，第二加样针机构4-2不工作。
第3个周期，第一加样针机构4-1、第二加样针机构4-2和第三加样针机构4-3在水平驱动机构3的控制下分别转动至反应盘7、清洗盘5和样本盘6的上方。之后，第一垂直驱动机构2-1和第三垂直驱动机构2-3分别驱动第一加样针机构4-1和第三加样针机构4-3下降至指定位置，第一加样针机构4-1和第三加样针机构4-3分别进行加样和取样工作，完成后，第一垂直驱动机构2-1和第三垂直驱动机构2-3分别驱动第一加样针机构4-1和第三加样针机构4-3上升至指定位置。在该周期内，第二加样针机构4-2只进行清洗内外针动作，第二垂直驱动机构2-2不工作。
第4个周期，第一加样针机构4-1、第二加样针机构4-2和第三加样针机构4-3在水平驱动机构3的控制下分别转动至清洗盘5、样本盘6和反应盘7的上方。第二垂直驱动机构2-2和第三垂直驱动机构2-3分别驱动第二加样针机构4-2和第三加样针机构4-3下降至指定位置，第二加样针机构4-2和第三加样针机构4-3分别进行取样和加样工作，完成后，第二垂直驱动机构2-2和第三垂直驱动机构2-3分别驱动第二加样针机构4-2和第三加样针机构4-3上升至指定位置。在该周期内，第一加样针机构4-1只进行清洗内外针动作，第一垂直驱动机构2-1不工作。
第5个周期，第一加样针机构4-1、第二加样针机构4-2和第三加样针机构4-3在水平驱动机构3的控制下分别转动至样本盘6、反应盘7和清洗盘5的上方。第一垂直驱动机构2-1和第二垂直驱动机构2-2分别驱动第一加样针机构4-1和第二加样针机构4-2下降至指定位置，第一加样针机构4-1和第二加样针机构4-2分别进行取样和加样工作，完成后，第一垂直驱动机构2-1和第二垂直驱动机构2-2分别驱动第一加样针机构4-1和第二加样针机构4-2上升至指定位置。在该周期内，第三加样针机构4-3只进行清洗内外针动作，第三垂直驱动机构2-3不工作。
从第6个周期开始，加样针机构4依次顺序执行第3-5个周期的动作。
综上，本发明的加样机构通过对每个加样针机构4配置独立的垂直驱动机构2控制其上下移动，所有加样针机构4由一个水平驱动机构3控制 同时转动分别停留在清洗盘5、样本盘6和反应盘7的上方，实现多个加样针机构4分时序采样的功能，能够在加样的同时进行清洗和取样，节约了加样机构周期内运行的时间，提高了每个周期内加样的次数，大幅度提高了分析仪对样本的分析速度。
本发明一实施例中，加样针机构4优选包括与垂直驱动机构2驱动连接的转轴4-1-3，与转轴4-1-3的端部固定连接的横臂4-1-1以及与横臂4-1-1固定连接的加样针4-1-2。垂直驱动机构2可以通过控制转轴4-1-3上下移动使加样针4-1-2进入反应盘7和样本盘6内的反应杯内，以完成样本的加样和取样工作。
本发明一实施例中，水平驱动机构3可以采用电机驱动结构形式，具体的，水平驱动机构3包括设置于支架1上的第一电机3-1、与第一电机3-1的输出端连接的旋转盘3-2，旋转盘3-2内固定设置有导向套3-3，导向套3-3的侧壁上设置有轴向方向的开口槽3-3-1，转轴4-1-3的外缘上设置有与开口槽3-3-1相配合的凸台4-1-4。凸台4-1-4与开口槽3-3-1的配合，在限制转轴4-1-3与导向套3-3之间径向移动的同时，可以使得转轴4-1-3在水平驱动机构3的驱动下相对导向套3-3上下移动。由此，加样针机构4既可以在水平驱动机构3的控制下水平转动，也可以在垂直驱动机构2的控制下上下移动。进而既实现了每个加样针机构4独立的上下移动，又可以使所有加样针机构4同时转动。
其中，第一电机3-1与旋转盘3-2之间的连接既可以采用齿轮传动、也可以采用皮带传动。
本发明一实施例中，由于转轴4-1-3的数量与加样针机构4的数量相对应，转轴4-1-3的数量至少为3个，为保证每个转轴4-1-3能够稳定的进行上下移动，导向套3-3能够对每个转轴4-1-3起到导向作用，可以将转轴4-1-3的横截面设计为椭圆形，增加转轴4-1-3与导向套3-3的配合面积，其中椭圆形尺寸可以根据转轴4-1-3的数量和导向套3-3的直径进行确定。
本发明一实施例中，垂直驱动机构2也可以采用电机驱动结构形式， 具体的，垂直驱动机构2包括设置于支架1上的第二电机2-1-1、与第二电机2-1-1的输出端连接的传动机构2-1-2，传动机构2-1-2与凸台4-3-1固定连接。
其中，传动机构2-1-2也可以采用皮带传动结构，通过凸台4-3-1与皮带的固定连接实现转轴4-1-3与传动机构2-1-2的连接。
本发明一实施例中，垂直驱动机构2在驱动加样针机构4上下移动时，为确保加样针机构4每次上下移动的位置准确性，可以在每个转轴4-1-3上都设置第一光电开关(未示出)，并在支架1上设置与第一光电开关相配合的第一光电开关挡片2-4。
同理，也可以在旋转盘3-2上设置第二光电开关(未示出)，在支架1上设置与第二光电开关相配合的第二光电开关挡片3-4；或者在第一电机3-1上设置码盘测量第一电机3-1的转动角度，最终实现加样针机构4能够准确的停留在清洗盘5、样本盘6和反应盘7的上方。
另一方面，本发明还提供一种分析仪，如图1至图6所示，包括清洗盘5、样本盘6和反应盘7以及上述任一所述的加样机构。
本发明的分析仪通过对每个加样针机构4配置独立的垂直驱动机构2控制其上下移动，所有加样针机构4由一个水平驱动机构3控制同时转动分别停留在清洗盘5、样本盘6和反应盘7的上方，实现多个加样针机构4分时序采样的功能，能够在加样的同时进行清洗和取样，节约了加样机构周期内运行的时间，提高了每个周期内加样的次数，大幅度提高了分析仪对样本的分析速度。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (8)

  1. 一种加样机构，其特征在于，包括支架和至少三个加样针机构，所述支架上设置有分别控制每个加样针机构上下移动的垂直驱动机构和同时控制所有加样针机构同时转动的水平驱动机构，所述水平驱动机构驱动所有加样针机构转动一次，每个加样针机构依次运动至清洗盘、样本盘和反应盘的上方。
  2. 根据权利要求1所述的加样机构，其特征在于，所述加样针机构包括与所述垂直驱动机构驱动连接的转轴，与所述转轴的端部固定连接的横臂以及与所述横臂固定连接的加样针。
  3. 根据权利要求2所述的加样机构，其特征在于，所述水平驱动机构包括设置于所述支架上的第一电机、与所述第一电机的输出端连接的旋转盘，所述旋转盘内固定设置有导向套，所述导向套的侧壁上设置有轴向方向的开口槽，所述转轴的外缘上设置有与所述开口槽相配合的凸台。
  4. 根据权利要求3所述的加样机构，其特征在于，所述转轴的横截面为椭圆形。
  5. 根据权利要求1至4中任一所述的加样机构，其特征在于，所述垂直驱动机构包括第二电机以及与第二电机的输出端连接的传动机构，所述传动机构与转轴固定连接。
  6. 根据权利要求5所述的加样机构，其特征在于，所述支架上设置有第一光电开关，所述传动机构上设置有与所述第一光电开关相配合的第一光电开关挡片。
  7. 根据权利要求5所述的加样机构，其特征在于，所述支架上设置有第二光电开关，所述旋转盘上设置有与所述第二光电开关相配合的第二光电开关挡片；
    或者，所述第二电机上设置有码盘。
  8. 一种分析仪，包括清洗盘、样本盘和反应盘，其特征在于，还包括权利要求1至7中任一所述的加样机构。
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