CN215641314U

CN215641314U - Transfer device and sample analyzer

Info

Publication number: CN215641314U
Application number: CN202122008966.8U
Authority: CN
Inventors: 陈长英; 杨黎明; 王浩
Original assignee: Maccura Medical Electronics Co Ltd
Current assignee: Maccura Medical Electronics Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-25
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a transfer device and a sample analyzer, wherein the transfer device comprises: the device comprises a support assembly, an outer arm assembly, an inner arm assembly, a first rotary driving mechanism and a second rotary driving mechanism, wherein the second rotary driving mechanism is arranged on the support assembly; the outer arm assembly is used for arranging the needle assembly, the outer arm assembly is rotatably arranged on the inner arm assembly, the second rotary driving mechanism drives the inner arm assembly to rotate, the first rotary driving mechanism drives the outer arm assembly to rotate, and a first rotary driver of the first rotary driving mechanism is arranged on the supporting assembly. In the transfer device, the needle assembly can move on at least two circles, and the positions which can be reached by the needle assembly are increased, so that the limitation on the whole equipment layout is reduced, and the layout flexibility is improved; and the increase of the load of the inner arm component is reduced, the inertia of the inner arm component is reduced, and the transfer function of the reagent or the sample is more efficiently completed on the premise of ensuring the sampling precision.

Description

Transfer device and sample analyzer

Technical Field

The utility model relates to the technical field of sample analysis, in particular to a transfer device and a sample analyzer.

Background

At present, the transfer device mainly adopts a single-arm structure, so that the needle assembly can only move back and forth on a certain circumference, the positions where the needle assembly can reach are limited, and the limitation on the whole equipment layout is large.

In addition, when the manufacturing error and the assembly error of the parts are large, the needle tip of the needle assembly may exceed the set circumferential range, and the needle tip may not be operated at the designated position.

In summary, a need exists in the art for a solution to the problem of increasing the number of positions that can be reached by a needle assembly and reducing the limitations on the layout of a sample analyzer.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a transfer device for filling and transferring reagents and samples, so as to increase the positions that can be reached by the needle assembly and reduce the limitations on the layout of the sample analyzer. It is another object of the present invention to provide a sample analyzer comprising the above transfer device.

In order to achieve the purpose, the utility model provides the following technical scheme:

a transfer device, comprising: the device comprises a support assembly, an outer arm assembly, an inner arm assembly, a first rotary driving mechanism and a second rotary driving mechanism, wherein the second rotary driving mechanism is arranged on the support assembly;

wherein the outer arm assembly is used for arranging a needle assembly, the outer arm assembly is rotatably arranged on the inner arm assembly, the second rotary driving mechanism drives the inner arm assembly to rotate, the first rotary driving mechanism drives the outer arm assembly to rotate, and a first rotary driver of the first rotary driving mechanism is arranged on the supporting assembly.

Optionally, the first rotary drive mechanism comprises the first rotary driver, a first rotary shaft and a first transmission mechanism, and the second rotary drive mechanism comprises a second rotary driver and a second rotary shaft;

the second rotating shaft is sleeved on the first rotating shaft, the first rotating shaft and the second rotating shaft are both rotatably arranged on the supporting component, and the first transmission mechanism is arranged on the inner arm component;

the first rotary driver drives the first rotary shaft to rotate, and the first rotary shaft drives the outer arm assembly to rotate through the first transmission mechanism;

the second rotary driver drives a second rotary shaft to rotate, and the second rotary shaft is fixedly connected with the inner arm assembly.

Optionally, the first transmission mechanism comprises: the transmission mechanism comprises a first driving wheel, a first driven wheel, a first transmission piece and a transmission shaft, wherein the first transmission piece is wound on the first driving wheel and the first driven wheel;

the first rotating shaft is fixedly connected with the first driving wheel, the outer arm assembly is fixedly connected with the transmission shaft, and the transmission shaft is a first hollow shaft.

Optionally, the transfer device further comprises a lifting driving mechanism arranged on the support assembly;

the first rotating shaft and the second rotating shaft are connected in a sliding mode in the circumferential direction and fixedly connected in the axial direction, the first rotating shaft is rotatably arranged on the supporting assembly around the axis of the first rotating shaft and movably arranged in the axial direction of the first rotating shaft, the second rotating shaft is rotatably arranged on the supporting assembly around the axis of the second rotating shaft and movably arranged in the axial direction of the second rotating shaft, and the lifting driving mechanism drives the first rotating shaft and the second rotating shaft to lift synchronously.

Optionally, the first rotary drive mechanism comprises a first bearing assembly, the first bearing assembly comprises a first bearing seat and a first bearing, the first bearing seat is fixed to the support assembly, an outer ring of the first bearing is fixed to the first bearing seat, an inner ring of the first bearing and the outer ring of the first bearing are in running fit, and the inner ring of the first bearing and the first rotary shaft are fixedly connected in the circumferential direction and slidably connected in the axial direction;

the second rotary driving mechanism comprises a second bearing assembly, the second bearing assembly comprises a second bearing seat and a second bearing, the second bearing seat is fixed on the support assembly, an outer ring of the second bearing is fixed on the second bearing seat, an inner ring of the second bearing is in running fit with the outer ring of the second bearing, and the inner ring of the second bearing is fixedly connected with the second rotary shaft along the circumferential direction and is in sliding connection along the axial direction;

the first rotation axis with the second rotation axis passes through third bearing assembly and connects, third bearing assembly includes third bearing frame and third bearing, the third bearing frame with second rotation axis fixed connection, the outer lane of third bearing with third bearing frame fixed connection, the inner circle of third bearing with the outer lane normal running fit of third bearing, the inner circle of third bearing with first rotation axis fixed connection.

Optionally, the first rotating shaft includes at least two shaft sections fixedly connected to each other, at least one of the shaft sections is a first spline shaft, the first spline shaft is sleeved with a first spline female shaft that is axially slidably connected to the first spline shaft and fixedly connected to the first spline female shaft in the circumferential direction, and the first spline female shaft is fixedly connected to the inner ring of the first bearing; at least one shaft section is a second hollow shaft, and the second hollow shaft is fixedly connected with the inner ring of the third bearing;

the second rotating shaft comprises a second spline shaft, a second spline female shaft which is connected with the second spline shaft in an axial sliding mode and fixedly connected with the second spline shaft along the circumferential direction is sleeved outside the second spline shaft, the second spline female shaft is fixedly connected with the inner ring of the second bearing, and the third bearing seat is fixedly connected with the second spline shaft.

Optionally, the second rotating shaft is sleeved outside the first rotating shaft, and the lifting driving mechanism drives the second rotating shaft to lift.

Optionally, the lifting drive mechanism comprises a lifting driver and a lifting connector; the lifting driver drives the lifting connecting piece to lift, the lifting connecting piece is connected with the second rotating shaft along the axial direction in a fixed mode and connected with the second rotating shaft in a sliding mode along the circumferential direction, and the lifting connecting piece is arranged on the supporting assembly in a sliding mode along the lifting direction.

Optionally, a first limiting part and a second limiting part are fixed on the second rotating shaft, the lifting connecting piece is located between the first limiting part and the second limiting part, and the lifting connecting piece is axially limited by the first limiting part and the second limiting part so that the lifting connecting piece and the second rotating shaft are fixedly connected along the axial direction.

Optionally, the lifting driving mechanism further comprises a weight member and a second transmission mechanism;

wherein the second transmission mechanism comprises: the second driving wheel, the second driven wheel and a second conveying piece are wound on the second driving wheel and the second driven wheel;

the lifting driver drives the second driving wheel to rotate; one end of the counterweight is slidably arranged in the supporting component along the vertical direction, the other end of the counterweight and the lifting connecting piece are fixed on the second conveying piece, and the lifting connecting piece and the counterweight are respectively positioned on two sides of the second driving wheel.

Optionally, a bearing is disposed between the first rotating shaft and the second rotating shaft.

Optionally, the transfer device further comprises a lifting driving mechanism arranged on the support assembly, and the lifting driving mechanism drives the inner arm assembly and the outer arm assembly to lift synchronously;

wherein the support assembly comprises: the bottom of the supporting frame is fixedly connected with the bottom plate, the top of the supporting frame is fixedly connected with the top plate, the first rotary driver is arranged on the bottom plate, the second rotary driving mechanism is arranged on the top plate, and the lifting driving mechanism is arranged on the supporting frame.

Optionally, the inner arm assembly is provided with a pipe winding hub for winding a liquid pipe, the outer arm assembly includes a connecting portion externally sleeved on the pipe winding hub, the connecting portion is rotatably provided on the inner arm assembly, and a gap is formed between the connecting portion and the pipe winding hub.

Optionally, the transfer device further comprises a first detector, and/or a second detector, and/or a third detector, and/or a fourth detector, and/or a fifth detector;

wherein the first detector is used for detecting whether the needle assembly reaches a first preset position, and the outer arm assembly and the inner arm assembly can rotate when the needle assembly reaches the first preset position;

the second detector is used for detecting whether the needle assembly reaches a second preset position, and the storage bin can move in a horizontal plane only when the needle assembly reaches the second preset position in the process of leaving the storage bin; and the needle assembly does not disengage from the storage bin and from a storage container within the storage bin for storing a reagent or sample when the needle assembly reaches the second preset position during its exit from the storage bin;

the third detector is used for detecting whether the inner arm assembly reaches a reset position or not;

the fourth detector is used for detecting whether the inner arm assembly reaches a third preset position, and the third preset position is a position where the inner arm assembly stays when the needle assembly is at the discharging and spitting position;

the fifth detector is configured to detect whether the outer arm assembly reaches a fourth preset position, where the outer arm assembly stays when the needle assembly is at the washing position.

Based on the transfer device provided by the utility model, the utility model further provides a sample analyzer, which comprises the transfer device, wherein the transfer device is any one of the transfer devices.

According to the transfer device provided by the utility model, the outer arm assembly and the inner arm assembly are adopted, the needle assembly is arranged on the outer arm assembly, the outer arm assembly is rotatably arranged on the inner arm assembly, the first rotary driving mechanism drives the outer arm assembly to rotate, and the second rotary driving mechanism drives the inner arm assembly to rotate, so that the needle assembly can move on at least two circumferences, the positions where the needle assembly can reach are increased, the limitation on the whole equipment layout is reduced, and the layout flexibility is improved; moreover, the first rotary driver of the first rotary driving mechanism is arranged on the supporting component, the first rotary driver is separated from the moving mechanism, and the increase of the load of the inner arm component is reduced, so that the inertia of the inner arm component is reduced, and the function of transferring the reagent or the sample is more efficiently completed on the premise of ensuring the sample adding precision.

Meanwhile, the transfer device provided by the utility model can adjust the position of the needle assembly through the rotation of the inner arm assembly and the outer arm assembly, can relax the requirements on manufacturing errors and assembly errors of certain parts, and also improves the accuracy of the needle point of the needle assembly reaching the set position.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a transfer device provided in an embodiment of the present invention;

FIG. 2 is a front view of a transfer device provided in accordance with an embodiment of the present invention;

FIG. 3 is a bottom view of a transfer device provided in accordance with an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of a transfer device provided in accordance with an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of a transfer device provided in accordance with an embodiment of the present invention;

FIG. 6 is a partial cross-sectional view of a transfer device provided in accordance with an embodiment of the present invention;

FIG. 7 is a partial cross-sectional view of a transfer device provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an inner arm assembly of a transfer device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an outer arm assembly in the transfer device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 9, a transfer device provided in an embodiment of the present invention includes: a support assembly 100, an outer arm assembly 600, an inner arm assembly 500, a first rotary drive mechanism 200, and a second rotary drive mechanism 400 disposed on the support assembly 100.

The outer arm assembly 600 is used to position the needle assembly 900. the outer arm assembly 600 is rotatably positioned within the inner arm assembly 500.

To shorten the length of the outer arm assembly 600, one end of the outer arm assembly 600 may be selected to be rotatably disposed on the inner arm assembly 500 and the other end of the outer arm assembly 600 may be selected to be disposed on the needle assembly 900. The needle assembly 900 is used for aspirating and discharging a reagent or for aspirating and discharging a sample, and is selected according to actual needs, which is not limited in this embodiment.

The second rotation driving mechanism 400 drives the inner arm assembly 500 to rotate, the first rotation driving mechanism 200 drives the outer arm assembly 600 to rotate, and the first rotation driver 201 of the first rotation driving mechanism 200 is disposed on the support assembly 100.

According to the transfer device provided by the above embodiment, by adopting the outer arm assembly 600 and the inner arm assembly 500, the needle assembly 900 is arranged on the outer arm assembly 600, since the outer arm assembly 600 is rotatably arranged on the inner arm assembly 500, the first rotary driving mechanism 200 drives the outer arm assembly 600 to rotate, and the second rotary driving mechanism 400 drives the inner arm assembly 500 to rotate, that is, a folding double-arm structure is adopted, so that the needle assembly 900 can move on at least two circles, the positions that the needle assembly 900 can reach are increased, the limitation on the whole equipment layout is reduced, and the layout flexibility is improved.

Meanwhile, the transfer device provided by the above embodiment can adjust the position of the needle assembly 900 by rotating the inner arm assembly 500 and the outer arm assembly 600, can relax the requirements on manufacturing errors and assembly errors of some parts, and also improves the accuracy of the set position which can be reached by the needle point of the needle assembly 900.

In the transfer device provided in the above embodiment, the first rotary actuator 201 is disposed on the support assembly 100, and the first rotary actuator 201 is isolated from the moving mechanism, so that an increase of the load of the inner arm assembly 500 is reduced, thereby reducing the inertia of the inner arm assembly 500, and completing the transfer function of the reagent or the sample more efficiently on the premise of ensuring the sample adding precision.

The specific configurations of the first rotary drive mechanism 200 and the second rotary drive mechanism 400 are selected according to actual needs. Alternatively, the first rotary drive mechanism 200 includes a first rotary driver 201, a first rotary shaft, and a first transmission mechanism 207, and the second rotary drive mechanism 400 includes a second rotary driver 401 and a second rotary shaft 404; the first rotating shaft and the second rotating shaft 404 are both rotatably disposed on the supporting assembly 100, the first rotating driver 201 drives the first rotating shaft to rotate, and the first rotating shaft drives the outer arm assembly 600 to rotate through the first transmission mechanism 207; the second rotation driver 401 drives the second rotation shaft 404 to rotate, and the second rotation shaft 404 is fixedly connected to the inner arm assembly 500.

To simplify the structure, the first transmission mechanism 207 is disposed on the inner arm assembly 500 to facilitate the rotation of the outer arm assembly 600. Of course, other distribution manners may be selected, and this embodiment does not limit this.

In practical applications, in order to facilitate the independent rotation of the first rotation shaft and the second rotation shaft 404, the second rotation shaft 404 may be selected to be sleeved on the first rotation shaft. Therefore, the structural form of the shaft middle shaft is adopted, the structure is simplified, and the space occupied by the whole device is reduced.

Specifically, the second rotating shaft 404 is sleeved on the first rotating shaft, or the first rotating shaft is sleeved on the second rotating shaft 404, which is selected according to actual requirements.

The types of the first rotary actuator 201 and the second rotary actuator 401 are selected according to actual needs, for example, the first rotary actuator 201 and the second rotary actuator 401 are motors or rotary cylinders, and the present embodiment is not limited thereto.

The type of the first transmission 207 is selected according to actual needs. Specifically, the first transmission mechanism 207 includes: the transmission mechanism comprises a first driving wheel, a first driven wheel, a first transmission piece wound on the first driving wheel and the first driven wheel, and a transmission shaft fixedly connected with the first driven wheel; wherein, first rotation axis and first action wheel are fixed continuous, and outer arm subassembly 600 is fixed continuous with the transmission shaft. It is understood that the first driving wheel, the first driven wheel and the transmission shaft are rotatably disposed on the inner arm assembly 500.

To reduce weight and facilitate the routing of the fluid lines, the drive shaft is a first hollow shaft 208.

The first conveying member can be a conveying belt or a conveying chain, and is selected according to actual requirements. If the first conveying member is a conveyor belt, the first transmission mechanism 207 further includes a tensioning device 209 for tensioning the first conveying member in order to ensure the moving direction. The tensioning device 209 can adjust the tensioning force of the first conveying piece within a certain range, and can eliminate uncontrollable factors of the tensioning force caused by the length error of the conveying belt and the size error of the center distance.

The type of the tensioning device 209 is selected according to actual needs, and the embodiment is not limited thereto.

In order to ensure that the needle assembly 900 moves to the set position, the transfer device further includes a lifting driving mechanism 300 disposed on the support assembly 100, wherein the lifting driving mechanism 300 drives the outer arm assembly 600 and the inner arm assembly 500 to synchronously lift.

In order to simplify the structure, the first rotating shaft and the second rotating shaft 404 are slidably connected in the circumferential direction and fixedly connected in the axial direction, the first rotating shaft is rotatably provided around the axis thereof and movably provided in the axial direction thereof to the support member 100, the second rotating shaft 404 is rotatably provided around the axis thereof and movably provided in the axial direction thereof to the support member 100, and the lifting drive mechanism 300 drives the first rotating shaft and the second rotating shaft 404 to be lifted and lowered synchronously.

In the transfer device, synchronous lifting of the inner arm assembly 500 and the outer arm assembly 600, rotation of the inner arm assembly 500, and rotation of the outer arm assembly 600 are independent and do not interfere with each other, so that the movement accuracy and reliability of synchronous lifting of the inner arm assembly 500 and the outer arm assembly 600, rotation of the inner arm assembly 500, and rotation of the outer arm assembly 600 are improved; moreover, the load increment of the lifting driving mechanism 300 is also reduced, so that the inertia of the lifting driving mechanism 300 is reduced, and the reagent or sample transferring function is more efficiently completed on the premise of ensuring the sample adding precision.

To facilitate ensuring the lifting and rotation of the first and second rotary shafts 404, the first rotary drive mechanism 200 further includes a first bearing assembly 205 and the second rotary drive mechanism 400 further includes a second bearing assembly 403.

Specifically, the first bearing assembly 205 includes a first bearing seat fixed to the support assembly 100, and a first bearing having an outer ring fixed to the first bearing seat, the outer ring of the first bearing and the inner ring of the first bearing being rotatably engaged, and the first rotating shaft and the inner ring of the first bearing being fixedly connected in a circumferential direction and slidably connected in an axial direction.

Specifically, the second bearing assembly 403 includes a second bearing seat 4031 and a second bearing 4032, the second bearing seat 4031 is fixed to the support assembly 100, an outer ring of the second bearing 4032 is fixed to the second bearing seat 4031, an inner ring of the second bearing 4032 is in rotating fit with the outer ring of the second bearing 4032, and an inner ring of the second rotating shaft 404 and the second bearing 4032 are fixedly connected in the circumferential direction and slidably connected in the axial direction.

In the transfer device, by adopting the first bearing seat and the second bearing seat 4031, boring on the support component 100 is not needed, and only a through hole is needed to be formed in the support component 100, so that the processing is simplified, and the manufacturing cost is reduced.

To facilitate control of the coaxiality of the first and second rotary shafts 404, the first and second rotary shafts 404 are connected by a third bearing assembly 307.

Specifically, the third bearing assembly 307 includes a third bearing seat and a third bearing, the third bearing seat is fixedly connected to the second rotating shaft 404, an outer ring of the third bearing is fixedly connected to the third bearing seat, an inner ring of the third bearing is rotatably engaged with the outer ring of the third bearing, and the inner ring of the third bearing is fixedly connected to the first rotating shaft.

In the above structure, the third bearing assembly 307 prevents the two shafts from being relatively deflected due to assembly errors and component manufacturing errors, thereby preventing the two shafts from being worn.

For convenience of manufacturing, the first rotating shaft may include at least two shaft sections that are fixedly connected, at least one of the shaft sections is a first spline shaft 202, the first spline shaft 202 is sleeved with a first spline female shaft that is axially slidably connected with the first spline shaft and is fixedly connected with the first spline female shaft along the circumferential direction, and the first spline female shaft is fixedly connected with the inner ring of the first bearing; at least one shaft section is a second hollow shaft 203, and the second hollow shaft 203 and the inner ring of the third bearing are connected in a sliding mode along the circumferential direction and are fixedly connected along the axial direction; the second rotating shaft 404 includes a second spline shaft, the second spline shaft is sleeved with a second spline female shaft which is connected with the second spline shaft in an axial sliding manner and fixedly connected with the second spline shaft along the circumferential direction, the second spline female shaft is fixedly connected with the inner ring of the second bearing 4032, and the third bearing seat is fixedly connected with the second spline shaft.

In the above structure, two adjacent shaft segments can be selected to be fixedly connected by the coupling 204, for example, the first spline shaft 202 and the second hollow shaft 203 are fixedly connected by the coupling 204.

In the above-described transfer device, in order to simplify the structure, the second rotating shaft 404 may be selectively sleeved on the first rotating shaft, and the elevation driving mechanism 300 may drive the second rotating shaft 404 to be elevated. If the first rotating shaft includes the second hollow shaft 203, the second rotating shaft 404 is sleeved on the second hollow shaft 203.

Specifically, the lifting drive mechanism 300 includes a lifting driver 301 and a lifting connector 305; the lifting driver 301 drives the lifting connecting member 305 to lift, and the lifting connecting member 305 is fixedly connected to the second rotating shaft 404 along the axial direction and slidably connected to the second rotating shaft along the circumferential direction. It can be understood that the lifting link 305 is fixedly connected to the second rotating shaft 404 along the axial direction of the second rotating shaft 404 and slidably connected along the circumferential direction of the second rotating shaft 404.

For the sake of simplifying the structure, the lifting link 305 may be selected to be fixedly connected to the second rotating shaft in the axial direction and slidably connected in the circumferential direction through a fourth bearing assembly. Specifically, the fourth bearing seat of the fourth bearing assembly is fixed to the lifting link 305, the outer race of the fourth bearing assembly is fixed to the fourth bearing seat, the inner race of the fourth bearing is fixedly connected to the second rotating shaft 404, and the outer race and the inner race of the fourth bearing are rotationally engaged. Of course, other structures may be selected to realize that the lifting link 305 is fixedly connected to the first rotating shaft in the axial direction and slidably connected to the first rotating shaft in the circumferential direction through a bearing assembly, and the structure is not limited to the above embodiment.

For stability, the lifting link 305 may be slidably disposed on the support assembly 100 along the lifting direction. Specifically, the lifting link 305 is provided with a guide rod 308, the end of the guide rod 308 is provided with a guide wheel 309, and the support assembly 100 is provided with a guide hole 105 in sliding fit with the guide wheel 309. It can be understood that the guide hole 105 is a strip-shaped hole, and the length direction of the guide hole 105 is the lifting direction. In practical applications, the lifting link 305 may also be slidably disposed on the supporting assembly 100 along the lifting direction through other structures, such as a guide rail, and the like, which is not limited in this embodiment.

The type of the lifting driver 301 is selected according to actual needs, for example, the lifting driver 301 is a motor or a rotary cylinder, and the like, which is not limited in this embodiment.

The size and shape of the lifting link 305 are selected according to actual needs, and this embodiment is not limited thereto.

In the above transfer device, in order to facilitate the fixed connection of the lifting link 305 and the second rotating shaft 404 in the axial direction, the second rotating shaft 404 is fixed with a first limiting member and a second limiting member, the lifting link 305 is located between the first limiting member and the second limiting member, and the lifting link 305 and the second rotating shaft 404 are fixedly connected in the axial direction by the axial limitation of the lifting link 305 by the first limiting member and the second limiting member.

Specifically, one of the first stopper member and the second stopper member may be integrated with the second rotating shaft 404, and the other may be fixed to the second rotating shaft 404 by a connecting member, so as to simplify the installation. If the first position-limiting member is located at the top of the lifting link 305 and the second position-limiting member is located at the bottom of the lifting link 305, for the convenience of assembly, the first position-limiting member and the second rotation shaft 404 may be selected to be of an integral structure, and the second position-limiting member is fixed to the second rotation shaft 404 through a connecting member.

The type of the connecting member is selected according to actual needs, for example, the connecting member is a fastener, and the like, and this embodiment does not limit this.

In the transfer device, the lifting connecting piece 305 is axially limited by the first limiting part and the second limiting part, so that the lifting connecting piece 305 is prevented from falling under the action of self gravity, and the reliability is improved.

If the transfer device includes the third bearing assembly 307, the third bearing assembly can be selected as the second limiting member, so that the number of parts is reduced, the structure is simplified, and the compactness is improved.

In order to realize the deceleration driving, the lifting driving mechanism 300 may further include a second transmission mechanism 302, and the lifting driver 301 drives the lifting connection member 305 to lift through the second transmission mechanism 302.

The type of the second transmission 302 is selected according to actual needs. Specifically, the second transmission mechanism 302 includes: a second driving wheel 3021, a second driven wheel 3022, and a second transmitting member 3023 wound around the second driving wheel 3021 and the second driven wheel 3022; wherein, the lifting driver 301 drives the second driving wheel 3021 to rotate; the elevating link 305 is fixed to the second transfer unit 3023.

The second conveying member 3023 may be a conveyor belt or a conveyor chain, which is selected according to actual needs and is not limited in this embodiment.

In order to further optimize the above technical solution, the lifting driving mechanism 300 further includes a weight 306, one end of the weight 306 is slidably disposed on the support assembly 100 along the vertical direction, the other end of the weight 306 is fixed to the second conveying member 3023, and the lifting connecting member 305 and the weight 306 are respectively located at two sides of the second driving wheel 3021.

To facilitate the provision of the weight member 306, the support assembly 100 is provided with a slide rail 104, and the weight member 306 is slidably engaged with the slide rail 104. Specifically, the slide rail 104 is a linear guide rail, and the linear guide rail is a pre-stressed linear guide rail, so that the damping in the vertical motion direction is increased, and therefore, the start-stop damping effect is achieved, and the motion is more stable.

In the second transfer member 3023, a portion of the second transfer member 3021 on one side of the second driving wheel 3021 is a second transfer member a portion, a portion of the second transfer member 3021 on the other side of the second driving wheel is a second transfer member B portion, the weight member 306 is fixed to the second transfer member a portion, the elevating link 305 is fixed to the second transfer member B portion, and the weight member 306 is used for balancing a load of the second transfer member B portion. Therefore, the power-off self-locking function of the whole transfer device is realized, the stability of the needle assembly 900 during starting and stopping is also provided, and the probability that reagents or samples are splashed out of the needle assembly 900 due to overlarge vibration intensity is reduced.

The size and shape of the weight 306 are selected according to actual needs, and this embodiment is not limited to this.

For convenience of installation, the lifting connecting member 305 may be fixedly connected to the lifting connecting plate 304, and the lifting connecting plate 304 is fixedly connected to the second transferring member 3023 via the first lifting/lowering plate 303. Specifically, the lifting connection plate 304 and the first lifting pressure plate 303 are respectively located at two sides of the second conveying member 3023, and the connection plate 304 and the lifting pressure plate 303 clamp the second conveying member 3023 through a fixed connection.

The weight member 306 is fixedly connected to the second transmission member 3023 through the second step-up and step-down plate 310, specifically, the weight member 306 and the second step-up and step-down plate 310 are respectively located at two sides of the second transmission member 3023, and the weight member 306 and the second step-up and step-down plate 310 clamp the second transmission member 3023 through the fixed connection.

To improve the accuracy, the first rotary actuator 201 drives the first rotary shaft to rotate via the third transmission mechanism 206. Since the first rotation shaft drives the outer arm assembly 600 to rotate through the first transmission mechanism 207, the rotation of the outer arm assembly 600 is decelerated in two stages, and the rotation positioning error of the outer arm assembly 600 caused by the repeated positioning accuracy of the first rotation driver 201 can be synchronously reduced without increasing the size of the first driven wheel.

The specific structure of the third transmission mechanism 206 is selected according to actual needs. Alternatively, the third transmission mechanism 206 includes: the third driving wheel, the third driven wheel and a third conveying piece wound on the third driving wheel and the third driven wheel; the first rotating shaft is fixedly connected with the third driven wheel, and the first rotating driver 201 drives the third driving wheel to rotate.

It will be appreciated that the third driving wheel and the third driven wheel are both rotatably disposed on the support assembly 100, and if the first rotary driving mechanism 200 includes the first bearing assembly 205, the third driven wheel and the inner ring of the first bearing may be selected to be fixedly connected in the circumferential direction and slidably connected in the axial direction for the sake of simplicity, and at this time, the first rotary shaft is fixedly connected in the circumferential direction and slidably connected in the axial direction through the third driven wheel and the inner ring of the first bearing.

Accordingly, in order to improve accuracy, the second rotary driver 401 drives the second rotary shaft 404 to rotate through the fourth transmission mechanism 402.

The specific structure of the fourth transmission mechanism 402 is selected according to actual needs. Optionally, wherein the fourth transmission mechanism 402 includes: the fourth driving wheel, the fourth driven wheel and a fourth conveying piece are wound on the fourth driving wheel and the fourth driven wheel; the second rotation shaft 404 is fixedly connected to the fourth driven wheel, and the second rotation driver 401 drives the fourth driving wheel to rotate.

It will be appreciated that the fourth driving wheel and the fourth driven wheel are both rotatably disposed on the support assembly 100, and if the second rotary drive mechanism 400 includes the second bearing assembly 403, the fourth driven wheel and the inner ring of the second bearing may be selected to be fixedly connected in the circumferential direction and slidably connected in the axial direction for the sake of simplicity, and at this time, the second rotary shaft 404 is fixedly connected in the circumferential direction and slidably connected in the axial direction through the fourth driven wheel and the inner ring of the second bearing.

Since the second rotating shaft 404 is sleeved on the first rotating shaft, the first rotating shaft and the second rotating shaft 404 rotate independently, and a gap is formed between the first rotating shaft and the second rotating shaft 404. In order to ensure the coaxiality of the first rotating shaft and the second rotating shaft 404, a bearing may be optionally disposed between the first rotating shaft and the second rotating shaft 404. The type of the bearing is selected according to actual needs, for example, the bearing is a linear bearing, which is not limited in this embodiment.

In the above-mentioned transfer device, the specific structure of the support assembly 100 is selected according to actual needs. If the transfer device further includes a lifting driving mechanism 300 disposed on the support assembly 100, the lifting driving mechanism 300 drives the inner arm assembly 500 and the outer arm assembly 600 to lift and lower synchronously, the support assembly 100 may be selected to include: the lifting device comprises a bottom plate 103, a top plate 101 and a supporting frame 102, wherein the bottom of the supporting frame 102 is fixedly connected with the bottom plate 103, the top of the supporting frame 102 is fixedly connected with the top plate 101, a first rotary driver 201 is arranged on the bottom plate 103, a second rotary driving mechanism 400 is arranged on the top plate 101, and a lifting driving mechanism 300 is arranged on the supporting frame 102.

In the transfer device, the first rotary driver 201, the second rotary driver 401 and the lifting driver 301 are respectively fixed at different heights, so that the mutual influence among the first rotary driver 201, the second rotary driver 401 and the lifting driver 301 is avoided; moreover, the first rotary driver 201 is arranged on the bottom plate 103, so that the load of the lifting driver 301 is reduced, and the stability and the reliability are improved.

Specifically, if the transfer device includes the second transmission mechanism 302, the third transmission mechanism 206 and the fourth transmission mechanism 402, the second driving wheel 3021 and the second driven wheel 3022 are both rotatably disposed on the supporting frame 102, the third driving wheel and the third driven wheel are both rotatably disposed on the bottom plate 103, and the fourth driving wheel and the fourth driven wheel are both rotatably disposed on the top plate 101. If the transfer device includes the first bearing assembly 205 and the second bearing assembly 403, the first bearing assembly 205 is disposed on the bottom plate 103 and the second bearing assembly 403 is disposed on the top plate 101.

Further, in order to reduce the influence between the drivers, the lifting driver 301 of the lifting driving mechanism 300 may be selected to be disposed on the top of the supporting frame 102, and the second rotary driver 401 of the second rotary driving mechanism 400 is located at one end of the top plate 101 far from the lifting driver 301.

For the convenience of detachment, the supporting frame 102 and the bottom plate 103 may be detachably and fixedly connected, and the supporting frame 102 and the top plate 101 may be detachably and fixedly connected, for example, the supporting frame 102 is fixed to the bottom plate 103 by a fastener, and the supporting frame 102 is fixed to the top plate 101 by a fastener, which is a fixing pin, a fixing bolt, or the like, and this embodiment is not limited thereto.

In practical applications, the lifting driving mechanism 300, the first rotation driving mechanism 200, and the second rotation driving mechanism 400 may be alternatively arranged in other manners, and are not limited to the above embodiments.

In the above transfer device, the specific structures of the inner arm assembly 500 and the outer arm assembly 600 are selected according to actual needs. Specifically, the inner arm assembly 500 includes an inner arm body 501, and the outer arm assembly 600 includes an outer arm body 601. The needle assembly 900 is provided to the outer arm body 601.

To facilitate the arrangement of the fluid path tube connected to the needle assembly 900, the inner arm assembly 500 further includes a tube winding hub 502 for winding the fluid path tube, the outer arm assembly 600 includes a connecting portion externally sleeved on the tube winding hub 502, the connecting portion is rotatably disposed on the inner arm assembly 500, and a gap is formed between the connecting portion and the tube winding hub 502.

Specifically, the pipe winding boss 502 is fixed to the inner arm body 501, and the connection portion is fixed to the outer arm body 601.

Optionally, the outer arm assembly 600 further includes: and a liquid level detection plate 603 provided in the outer arm body 601 and detecting the remaining amount of the liquid line pipe. The specific structure of the liquid level detection plate 603 is selected according to actual needs, and this embodiment does not limit this.

If the inner arm assembly 500 is provided with the first transmission mechanism 207, the outer arm assembly 600 further includes a collar 602 fixedly connected to the transmission shaft. Of course, other structures may be selected to be fixedly connected with the transmission shaft, which is not limited in this embodiment.

In the above transfer device, before the inner arm assembly 500 and the outer arm assembly 600 rotate, it is necessary to ensure that the needle assembly 900 is at a predetermined distance from the plane of the entire transfer device, so as to avoid damaging the needle assembly 900. Specifically, the transfer device further comprises a first detector for detecting whether the needle assembly 900 reaches a first preset position, and the outer arm assembly 600 and the inner arm assembly 500 can rotate when the needle assembly 900 reaches the first preset position. Illustratively, the outer arm assembly 600 and the inner arm assembly 500 can rotate only when the needle assembly 900 reaches the first predetermined position; if the needle assembly 900 does not reach the first preset position, the outer arm assembly 600 and the inner arm assembly 500 do not rotate.

It should be noted that the plane of the transfer device is a predetermined distance from a first predetermined position, which is a position where the needle assembly 900 stays before aspirating the reagent or the sample.

The specific structure and type of the first detector are selected according to actual needs, for example, the first detector is a photosensor, and the like, which is not limited in this embodiment.

Currently, storage containers for storing reagents or samples are placed in a storage compartment with the top end of the storage container lower than the top end of the storage compartment. After the needle assembly 900 has aspirated a reagent or sample, the cartridge needs to be moved in a horizontal plane to perform the next reagent or sample, e.g., the cartridge is rotated in a horizontal plane. It will be appreciated that the needle assembly 900 is raised and lowered in a direction perpendicular to the horizontal plane. To avoid damage to the needle assembly 900, the cartridge is typically selected to move after the needle assembly 900 is removed from the cartridge. Thus, the time required is long. In order to shorten the time, the above transfer device may further include a second detector for detecting whether the needle assembly 900 reaches a second preset position, and the storage bin can move in the horizontal plane only when the needle assembly 900 reaches the second preset position in the process of leaving the storage bin; and the needle assembly 900 reaches the second preset position as it exits the cartridge without the needle assembly 900 being removed from the cartridge and from the storage container within the cartridge.

In the transfer device, the second detector is arranged, so that the storage bin can move in the horizontal plane without waiting for the needle assembly 900 to be completely separated from the storage bin, time guarantee is provided for the operation time sequence of the storage bin, and the time sequence of the whole transfer device can be set conveniently.

The specific structure and type of the second detector are selected according to actual needs, for example, the second detector is a photosensor, and the like, which is not limited in this embodiment.

In the above transfer device, since the inner arm assembly 500 and the outer arm assembly 600 are provided, the needle assembly 900 reaches a certain position with two different solutions, and the needle assembly 900 reaches a certain position with two different movement modes, so that the control system of the transfer device cannot recognize which movement mode the transfer device should operate according to. In order to solve the above problem, the above transfer device further includes a third detector for detecting whether the inner arm assembly 500 reaches the reset position.

It should be noted that, when the inner arm assembly 500 reaches the reset position, the inner arm assembly 500 rotates counterclockwise or clockwise.

The type of the third detector is selected according to actual needs. To facilitate detection, the optional third detector is a first photodetector comprising a first photosensor 700 and a first stop 1000 for use with the first photosensor 700. For the convenience of detection, the first photoelectric sensor 700 is fixed to the support member 100, and the first blocking piece 1000 is fixedly connected to the second rotating shaft 404.

In practical applications, the third detector may be selected to be of other types, and is not limited to the above-mentioned embodiment.

In order to facilitate control of the vertical position of the inner arm assembly 500, the transfer device further comprises a fourth detector for detecting whether the inner arm assembly 500 reaches a third predetermined position, which is a position at which the inner arm assembly 500 stays when the needle assembly 900 is in the discharge position. In this way, an initial reference is provided for the inner arm assembly 500 to reach other positions.

The discharge position refers to a position where the needle assembly 900 discharges a reagent or a sample.

The type of the fourth detector is selected according to actual needs. To facilitate detection, the optional row four detector is a second photodetector comprising a second photosensor 800 and a second stop for use with the second photosensor 800. For the convenience of detection, the second photoelectric sensor 800 is fixed to the support assembly 100, and the second blocking piece is fixedly connected to the inner arm assembly 500.

In order to facilitate the control of the vertical position of the outer arm assembly 600, the above transfer device further comprises a fifth detector for detecting whether the outer arm assembly 600 reaches a fourth preset position, which is the position where the outer arm assembly 600 stays when the needle assembly 900 is in the cleaning position. In this way, an initial reference is provided for the arrival of the outer arm assembly 600 at other positions.

The cleaning position is a position where the needle assembly 900 is cleaned.

For the type of the fifth detector, for example, a photoelectric sensor is selected according to actual needs, which is not limited in this embodiment.

Based on the transfer device provided by the above embodiment, the embodiment of the utility model further provides a sample analyzer, which comprises the transfer device, wherein the transfer device is the transfer device provided by the above embodiment.

Because the transfer device that above-mentioned embodiment provided has above-mentioned technological effect, above-mentioned sample analyzer includes above-mentioned transfer device, and above-mentioned sample analyzer also has corresponding technological effect, and the no longer repeated description herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transfer device, comprising: the device comprises a support assembly, an outer arm assembly, an inner arm assembly, a first rotary driving mechanism and a second rotary driving mechanism, wherein the second rotary driving mechanism is arranged on the support assembly;

2. The transfer device of claim 1, wherein the first rotary drive mechanism comprises the first rotary drive, a first rotary shaft, and a first transmission mechanism, and the second rotary drive mechanism comprises a second rotary drive and a second rotary shaft;

3. Transfer device according to claim 2, wherein the first transmission comprises: the transmission mechanism comprises a first driving wheel, a first driven wheel, a first transmission piece and a transmission shaft, wherein the first transmission piece is wound on the first driving wheel and the first driven wheel;

4. The transfer device of claim 2, further comprising a support assembly disposed on the support assembly

Wherein the first rotating shaft and the lifting drive mechanism of the member; the second rotating shaft is connected in a sliding mode in the circumferential direction and fixedly connected in the axial direction, the first rotating shaft is rotatably arranged on the supporting assembly around the axis of the first rotating shaft and movably arranged in the axial direction of the first rotating shaft, the second rotating shaft is rotatably arranged on the supporting assembly around the axis of the second rotating shaft and movably arranged in the axial direction of the second rotating shaft, and the lifting driving mechanism drives the first rotating shaft and the second rotating shaft to lift synchronously.

5. Transfer device according to claim 4,

the first rotary driving mechanism comprises a first bearing assembly, the first bearing assembly comprises a first bearing seat and a first bearing, the first bearing seat is fixed on the support assembly, an outer ring of the first bearing is fixed on the first bearing seat, an inner ring of the first bearing is in running fit with the outer ring of the first bearing, and the inner ring of the first bearing is fixedly connected with the first rotating shaft along the circumferential direction and is in sliding connection along the axial direction;

6. Transfer device according to claim 5,

the first rotating shaft comprises at least two shaft sections which are fixedly connected, at least one shaft section is a first spline shaft, a first spline female shaft which is in sliding connection with the first spline shaft along the axial direction and fixedly connected with the first spline female shaft along the circumferential direction is sleeved outside the first spline shaft, and the first spline female shaft is fixedly connected with the inner ring of the first bearing; at least one shaft section is a second hollow shaft, and the second hollow shaft is fixedly connected with the inner ring of the third bearing;

7. The transfer device of claim 4, wherein the second rotating shaft is sleeved on the first rotating shaft, and the lifting drive mechanism drives the second rotating shaft to lift.

8. The transfer device of claim 7, wherein the lift drive mechanism includes a lift drive and a lift link; the lifting driver drives the lifting connecting piece to lift, the lifting connecting piece is connected with the second rotating shaft along the axial direction in a fixed mode and connected with the second rotating shaft in a sliding mode along the circumferential direction, and the lifting connecting piece is arranged on the supporting assembly in a sliding mode along the lifting direction.

9. The transfer device of claim 8, wherein the second rotating shaft is fixed with a first limiting member and a second limiting member, the lifting connector is positioned between the first limiting member and the second limiting member, and the lifting connector is axially limited by the first limiting member and the second limiting member so that the lifting connector and the second rotating shaft are axially and fixedly connected.

10. The transfer device of claim 8, wherein the lift drive mechanism further comprises a counterweight and a second transmission mechanism;

11. Transfer device according to claim 4, wherein a bearing is arranged between the first and second rotation axis.

12. The transfer device of claim 1, further comprising a lift drive mechanism disposed on the support assembly, the lift drive mechanism driving the inner arm assembly and the outer arm assembly to lift and lower synchronously;

13. The transfer device of claim 1, wherein the inner arm assembly is provided with a spool hub for winding a fluid line spool, the outer arm assembly includes a coupling portion that is externally fitted over the spool hub, and the coupling portion is rotatably provided to the inner arm assembly with a gap therebetween.

14. Transfer device according to any of claims 1-13, further comprising a first detector, and/or a second detector, and/or a third detector, and/or a fourth detector, and/or a fifth detector;

15. A sample analyser comprising a transfer device, wherein the transfer device is as claimed in any one of claims 1 to 14.