CN215180276U

CN215180276U - Sampling arm sampling device

Info

Publication number: CN215180276U
Application number: CN202121583653.9U
Authority: CN
Inventors: 田永帅; 杨帆; 李大伟; 王江勇; 孙志辉; 唐大伟; 高文晓; 彭丹蕾; 汪亚利; 徐栋; 王品; 魏小凯
Original assignee: Qingdao Hightop Biotech Co ltd
Current assignee: Qingdao Hightop Biotech Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-14
Anticipated expiration: 2031-07-13

Abstract

The utility model provides a sample adding arm sampling device, including mounting bracket and the rotation axis of setting on the mounting bracket, the upper end fixedly connected with cantilever of rotation axis, the one end that the rotation axis was kept away from to the cantilever is connected with the sample needle, be provided with the first power device of drive rotation axis reciprocating rotation and the second power device of reciprocating motion about the drive rotation axis on the mounting bracket, first power device is step motor passes through first hold-in range and is connected with the rotation axis, the cover is equipped with linear bearing and bearing frame on the rotation axis, the bearing frame outside overlaps in proper order and is equipped with roating seat, first separation blade, second synchronous pulley and first bearing. Increase linear bearing length, stability when can guaranteeing rotation axis vertical motion and rotary motion adopts linear bearing, first curb plate and connecting block common drive rotation axis to rotate, increases the area of being connected with the rotation axis, improves rotation axis motion's stability.

Description

Sampling arm sampling device

Technical Field

The utility model relates to a full-automatic magnetic particle chemiluminescence immunoassay field, specifically speaking relates to a application of sample arm sampling device.

Background

The existing sampling device is driven by a stepping motor to complete rotation, a synchronous belt pulley is generally adopted to be directly connected with a rotating shaft, a linear bearing is arranged between the rotating shaft and a rack, the length of the linear bearing arranged in the mode is small, and the stability of the rotating shaft during vertical movement is influenced. And the motion of the sampling device in the vertical direction is driven by a common stepping motor, so that the sampling needle arm is easy to slide down under the condition of power failure of the device, and the needle head is damaged, thereby causing the problem of sampling precision.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned conventional art's weak point, provide a application of sample arm sampling device.

The purpose of the utility model is achieved through the following technical measures: the utility model provides a sample application arm sampling device which characterized in that: including mounting bracket and the rotation axis of setting on the mounting bracket, the upper end fixedly connected with cantilever of rotation axis, the one end that the rotation axis was kept away from to the cantilever is connected with the sample needle, be provided with drive rotation axis reciprocating motion's first power device and drive rotation axis reciprocating motion's second power device from top to bottom on the mounting bracket, first power device is step motor passes through first hold-in range and is connected with the rotation axis, the cover is equipped with linear bearing and bearing frame on the rotation axis, the bearing frame outside is equipped with roating seat, first separation blade, second synchronous pulley and first bearing in proper order.

As a preferred scheme, the bearing seat is connected with the mounting frame through a first bearing, and a gland is sleeved on the outer side of the first bearing.

As a preferred scheme, the first blocking piece is fixedly connected with the second synchronous pulley, and a first optocoupler matched with the first blocking piece is arranged on the mounting frame.

As a preferred scheme, a first side plate is arranged on the mounting frame, the lower end of the bearing seat is fixedly connected with the first side plate, the length of the linear bearing is greater than that of the bearing seat, and the first side plate is connected with the mounting frame through a hinge shaft.

As a preferred scheme, the second power device is a coding motor, the coding motor is fixed on the mounting frame and connected with a second synchronous belt, a transmission block is sleeved on the rotating shaft and fixedly connected with the second synchronous belt.

As a preferred scheme, be provided with the slide rail on the first curb plate, the slide rail sets up along vertical direction, rotation axis fixedly connected with connecting block, connecting block fixedly connected with and slide rail complex slider.

As a preferred scheme, the second synchronous belt is arranged in parallel with the sliding rail.

As a preferred scheme, the transmission block is located on the lower side of the connecting block, the diameter of the joint of the rotating shaft and the transmission block is smaller than that of the joint of the rotating shaft and the connecting block, a stop block is arranged on one side, away from the connecting block, of the transmission block, and the stop block and the rotating shaft are fixedly arranged.

Preferably, a second bearing is arranged between the transmission block and the rotating shaft.

As a preferred scheme, a second optical coupler is arranged on the mounting frame, and a second stop block matched with the second optical coupler is fixedly connected to the transmission block.

Owing to adopted above-mentioned technical scheme, compare with prior art, the utility model has the advantages that: the length of the linear bearing is increased, so that the vertical movement and the stability of the rotating shaft during the rotating movement can be ensured, the linear bearing, the first side plate and the connecting block are adopted to drive the rotating shaft to rotate together, the connecting area with the rotating shaft is increased, and the movement stability of the rotating shaft is improved; the coding motor is used to ensure the accuracy of the motor step number and ensure that adverse consequences caused by the natural falling of the sampling needle under the action of gravity can be effectively prevented when the equipment is powered off.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is the overall structure schematic diagram of the sampling arm sampling device of the present invention.

Fig. 2 is a schematic view of the sectional structure of the sampling arm sampling device of the present invention.

Fig. 3 is a schematic view of the upper structure of the sampling arm sampling device of the present invention.

Fig. 4 is a schematic view of a lower structure of the sampling arm sampling device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b): as shown in fig. 1, a sampling arm sampling device comprises an installation frame 1, wherein a rotating shaft 2 is arranged on the installation frame 1, one end of the rotating shaft 2 is fixedly connected with a cantilever 3, one end of the cantilever 3, which is far away from the rotating shaft 2, is connected with a sampling needle 5 through a needle seat 4, and the rotating shaft 2 is connected with a first power device for driving the rotating shaft to rotate and a second power device for driving the rotating shaft to move up and down.

As shown in fig. 1, 2 and 4, in this embodiment, the first power device is a stepping motor 6, the stepping motor 6 is fixed on the mounting frame 1, the output end of the stepping motor is connected with a first synchronous pulley 7, the rotating shaft 2 is fixedly connected with a second synchronous pulley 8, and a first synchronous belt 9 is sleeved between the first synchronous pulley 7 and the second synchronous pulley 8. The top end of the mounting rack 1 is provided with a transverse plate 10, the lower end of the mounting rack is provided with a bottom plate 13, and the side edge of the mounting rack is provided with a first side plate 14 and a second side plate 15. The stepping motor 6 is arranged at the lower end of the transverse plate 10, the first synchronous belt wheel 7, the second synchronous belt wheel 8 and the first synchronous belt 9 are all arranged above the transverse plate 10, one end of the rotating shaft 2 passes through the transverse plate 10, and the cross plate 10 are connected through a linear bearing 11 and a bearing seat 12, in this embodiment, as shown in fig. 2, the linear bearing 11 is sleeved on the rotating shaft 2, the bearing seat 12 is located outside the linear bearing 11, and is fixedly connected with a linear bearing 11, a bearing seat 12 is connected with a transverse plate 10 through a first bearing 16, a second synchronous pulley 8 is arranged on the upper side of the first bearing 16, fixedly connected with the bearing seat 12, a gland 17 is arranged outside the first bearing 16, and the part of the bearing seat 12, which is positioned at the lower side of the transverse plate 10, is connected with the first side plate 14, in the embodiment, the bearing seat 12 is fixedly mounted on the first side plate 14 through bolts, and the lower end of the first side plate 14 is hinged with the bottom plate 13 through a hinge shaft 18. Like this, step motor 6 rotates, drives second synchronous pulley 8 through first hold-in range 9 and rotates, and second synchronous pulley 8 drives bearing frame 12 and linear bearing 11 and rotates to drive rotation axis 2 and rotate, realize the rotation of application of sample needle 5. In this embodiment, second synchronous pulley 8 top is provided with roating seat 19, and linear bearing 11's lower extreme is located outside bearing frame 12, and the upper end is with roating seat 19 parallel and level, compares with linear bearing 11 among the prior art, and its length has increased, and is corresponding, has increased the contact surface with rotation axis 2, has increased rotation axis 2 rotation and vertical motion's stability. In this embodiment, bearing frame 12 rotates the in-process and drives first curb plate 14 and rotate along hinge 18, be provided with the slide rail 22 of vertical direction on the first curb plate 14, slide rail 22 passes through bolt fixed connection with first curb plate 14, the lower extreme fixedly connected with connecting block 20 of rotation axis 2, connecting block 20 fixedly connected with slider 21, slider 21 sets up with slide rail 22 cooperation, when step motor 6 drives rotation axis 2 and rotates, slide rail 22 and slider 21 follow the rotation together, the cover is equipped with synchronous pivoted linear bearing 11 and connecting block 20 on the rotation axis 2, make rotation axis 2 more stable at the rotation in-process.

As shown in fig. 1-2, a first blocking piece 23 is disposed between the rotating base 19 and the second synchronous pulley 8, the first blocking piece 23 is fixed on the second synchronous pulley 8 and rotates under the driving of the second synchronous pulley 8, a first optical coupler 24 is disposed on one side of the first blocking piece 23, the first optical coupler 24 is fixed on the horizontal plate 10, and the rotation angle of the rotating shaft 2 is controlled through the first blocking piece 23 and the first optical coupler 24.

As shown in fig. 1 and fig. 4, in this embodiment, the second power device is a coding motor 25, the coding motor 25 is fixed on the second side plate 15, the output end of the coding motor 25 is connected with a third synchronous pulley 26, a fourth synchronous pulley 27 is further disposed on the second side plate 15, a second synchronous belt 28 is sleeved between the third synchronous pulley 26 and the fourth synchronous pulley 27, the second synchronous belt 28 and the slide rail 22 are both disposed along the vertical direction, a transmission block 29 is disposed on the rotating shaft 2, the transmission block 29 is sleeved outside the rotating shaft 2 and is connected with the rotating shaft 2 through a second bearing 30, the transmission block 29 is fixedly connected with the second synchronous belt 28, when the coding motor 25 drives the second synchronous belt 28 to move up and down, the transmission block 29 moves synchronously under the driving of the second synchronous belt 28. As shown in fig. 2, in the present embodiment, the transmission block 29 is located below the connection block 20, the diameter of the rotation shaft 2 connected to the transmission block 29 is smaller than the diameter of the rotation shaft 2 connected to the connection block 20, and a stopper 31 is disposed below the transmission block 29, and the stopper 31 is fixedly connected to the rotation shaft 2. The coding motor 25 drives the transmission block 29 to move up and down through the second synchronous belt 28, and the transmission block 29 drives the rotating shaft 2 to move up and down, so that the up-and-down movement of the sample adding needle 5 is realized.

In this embodiment, as shown in fig. 1 and 4, the transmission block 29 is fixedly connected with a second blocking piece 32, the second side plate 15 is fixedly provided with a second optical coupler 33, the second optical coupler 33 is arranged below the fourth synchronous pulley 27, and the moving distance of the rotating shaft 2 is controlled by the second blocking piece 32 and the second optical coupler 33.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a sample application arm sampling device, includes mounting bracket and the rotation axis of setting on the mounting bracket, the upper end fixedly connected with cantilever of rotation axis, the one end that the rotation axis was kept away from to the cantilever is connected with the sample needle, be provided with drive rotation axis reciprocating motion's first power device and drive rotation axis reciprocating motion's second power device from top to bottom on the mounting bracket, its characterized in that: the first power device is a stepping motor, the stepping motor is connected with the rotating shaft through a first synchronous belt, the rotating shaft is sleeved with a linear bearing and a bearing seat, and a rotating seat, a first blocking piece, a second synchronous belt pulley and a first bearing are sequentially sleeved on the outer side of the bearing seat.

2. The sampling device of claim 1, wherein: the bearing seat is connected with the mounting frame through a first bearing, and a gland is sleeved on the outer side of the first bearing.

3. The sampling device of claim 1, wherein: the first blocking piece is fixedly connected with the second synchronous belt wheel, and a first optocoupler matched with the first blocking piece is arranged on the mounting frame.

4. A sampling device according to any one of claims 1 to 3, wherein: the bearing comprises a mounting frame, and is characterized in that a first side plate is arranged on the mounting frame, the lower end of a bearing seat is fixedly connected with the first side plate, the length of a linear bearing is greater than that of the bearing seat, and the first side plate is connected with the mounting frame through a hinge shaft.

5. The sampling device of claim 4, wherein: the second power device is a coding motor, the coding motor is fixed on the mounting frame and connected with a second synchronous belt, a transmission block is sleeved on the rotating shaft and fixedly connected with the second synchronous belt.

6. The sampling device of claim 5, wherein: the sliding rail is arranged on the first side plate and arranged along the vertical direction, the rotating shaft is fixedly connected with a connecting block, and the connecting block is fixedly connected with a sliding block matched with the sliding rail.

7. The sampling device of claim 6, wherein: the second synchronous belt is arranged in parallel with the sliding rail.

8. The sampling device of claim 7, wherein: the transmission block is located on the lower side of the connecting block, the diameter of the joint of the rotating shaft and the transmission block is smaller than that of the joint of the rotating shaft and the connecting block, a stop block is arranged on one side, away from the connecting block, of the transmission block, and the stop block is fixedly arranged with the rotating shaft.

9. The sampling device of claim 8, wherein: and a second bearing is arranged between the transmission block and the rotating shaft.

10. The sampling device of claim 9, wherein: the mounting bracket is provided with a second optical coupler, and the transmission block is fixedly connected with a second stop dog matched with the second optical coupler.