CN220040468U - Clamping device for sample tube and sample analyzer - Google Patents

Abstract

The utility model discloses a clamping device for a sample tube and a sample analyzer, wherein the clamping device for the sample tube comprises a mounting seat, a rotary driving part, a transmission assembly and two clamping assemblies, wherein the rotary driving part is arranged on the mounting seat and sequentially drives a driving gear, a driven gear and a bidirectional driving rotating shaft to rotate, a first external thread section and a second external thread section with opposite rotation directions are formed at two ends of the bidirectional driving rotating shaft, the first ends of the two clamping assemblies are respectively in threaded connection with the first external thread section and the second external thread section in a one-to-one correspondence manner, the rotary driving part is controlled to rotate forward so as to drive the two clamping assemblies to move in opposite directions, and the rotary driving part is controlled to rotate in opposite directions so as to drive the two clamping assemblies to move in opposite directions.

Description

Clamping device for sample tube and sample analyzer

Technical Field

The utility model belongs to the technical field of sample detection, and particularly relates to a clamping device for a sample tube and a sample analyzer.

Background

With the rapid development of molecular biology, sample analysis technology is increasingly playing a vital role in a variety of fields. For mass detection, the detection efficiency can be effectively improved through automatic detection equipment, and before the sample is specifically detected, the detection equipment needs to adopt a clamping device to perform cover opening operation on a sample tube with the sample to be detected, and the existing clamping device generally adopts two cylinders as driving pieces for butt clamping from the left side and the right side, so that the production cost is high, and the large layout space is occupied.

Disclosure of Invention

The utility model provides a clamping device for a sample tube and a sample analyzer, aiming at solving the technical problems that the production cost is high and the large layout space is occupied due to the fact that two air cylinders are used as driving pieces for clamping from the left side and the right side of the clamping device.

In order to achieve the above object, the utility model provides a clamping device for a sample tube, wherein the clamping device for a sample tube comprises a mounting seat, a rotary driving piece, a transmission assembly and two clamping assemblies, wherein the rotary driving piece is arranged on the mounting seat, the transmission assembly comprises a driving gear, a driven gear and a bidirectional driving rotating shaft, the driving gear is sleeved at the output end of the rotary driving piece, the bidirectional driving rotating shaft is rotatably arranged on the mounting seat, a first external thread section and a second external thread section with opposite rotation directions are formed at two ends of the bidirectional driving rotating shaft, the driven gear is meshed with the driving gear and is sleeved on the bidirectional driving rotating shaft between the first external thread section and the second external thread section, the first ends of the two clamping assemblies are respectively in one-to-one correspondence with the first external thread section and the second external thread section in threaded connection, and the second ends are used for clamping or loosening the sample tube.

In the embodiment of the utility model, the mounting seat is provided with the sliding rail which is parallel to the bidirectional driving rotating shaft, and the two clamping assemblies are movably arranged on the sliding rail.

In the embodiment of the utility model, the clamping assembly comprises a driving connecting plate, a sliding frame and an elastic clamping block for clamping the sample tube, wherein the first end of the driving connecting plate is provided with an internal threaded hole for the first external thread section or the second external thread section to penetrate, the upper end of the sliding frame is connected with the second end of the driving connecting plate, the elastic clamping block is arranged on one side facing the other clamping assembly, and the lower end of the sliding frame is movably arranged on the sliding rail.

In the embodiment of the utility model, the sliding frame is L-shaped and comprises a connecting plate and sliding plates, wherein the driving connecting plate and the elastic clamping blocks are respectively arranged on the two opposite sides of the connecting plate, and the sliding plates are bent, extended and arranged towards the outer side from the lower end of the connecting plate and are movably arranged on the sliding rail.

In the embodiment of the utility model, the clamping assembly further comprises a movable shaft and an elastic buffer piece, wherein the movable shaft is arranged on one side of the sliding frame, which is far away from the elastic clamping block, the elastic buffer piece is sleeved on the movable shaft, and a movable hole for the movable shaft to pass through is formed in the second end of the driving connecting plate and is positioned on one side of the elastic buffer piece, which is far away from the sliding frame.

In the embodiment of the utility model, the driving connecting plate comprises a connecting plate body and a nut sleeve, wherein a unthreaded hole is formed in the first end of the connecting plate body, the nut sleeve is arranged on the connecting plate body corresponding to the unthreaded hole, the first external thread section or the second external thread section sequentially penetrates through the unthreaded hole and the nut sleeve, and the second end of the connecting plate body is connected with the upper end of the sliding frame.

In the embodiment of the utility model, the clamping device for the sample tube further comprises a guide shaft arranged on the mounting seat, wherein the two clamping assemblies are respectively provided with a guide hole, and two ends of the guide shaft penetrate through the guide holes of the two clamping assemblies in a one-to-one correspondence manner.

In the embodiment of the utility model, a guide sleeve through which a guide shaft can pass is arranged in the guide hole.

In the embodiment of the utility model, the mounting seat comprises a base, a cover plate and two mounting vertical plates, wherein the two mounting vertical plates are oppositely arranged at intervals, the upper end and the lower end of the two mounting vertical plates are respectively connected with the cover plate and the base to form a transmission space, the rotary driving part is positioned at the outer side of the transmission space, the output end of the rotary driving part stretches into the transmission space, the driving gear and the driven gear are both arranged in the transmission space, the bidirectional driving rotating shaft is rotatably arranged on the two mounting vertical plates in a penetrating manner, and the two clamping assemblies are respectively arranged at the outer sides of the two mounting vertical plates and are in threaded connection with a first external thread section and a second external thread section of the bidirectional driving rotating shaft, which stretch out of the transmission space, in a one-to-one correspondence manner.

In order to achieve the above object, the present utility model also provides a sample analyzer, wherein the sample analyzer comprises a clamping device for a sample tube according to the above.

Through the technical scheme, the clamping device for the sample tube provided by the embodiment of the utility model has the following beneficial effects:

when the clamping device for the sample tube is used, as the clamping device comprises the mounting seat, the rotary driving piece, the transmission component and the two clamping components, the rotary driving piece is arranged on the mounting seat and sequentially drives the driving gear, the driven gear and the bidirectional driving rotating shaft to rotate, the two ends of the bidirectional driving rotating shaft are provided with the first external thread section and the second external thread section which are opposite in rotation direction, the first ends of the two clamping components are respectively in one-to-one correspondence with the first external thread section and the second external thread section in threaded connection, namely when the sample tube is required to be clamped, the rotary driving piece is controlled to rotate forward so as to drive the two clamping components on the bidirectional driving rotating shaft to move oppositely, and when the sample tube is required to be loosened, the rotary driving piece is controlled to rotate reversely so as to drive the two clamping components on the bidirectional driving rotating shaft to move oppositely.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide an understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view showing the structure of a clamping device for a sample tube according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a slider and resilient clamp block in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of a transmission assembly according to an embodiment of the present utility model;

fig. 4 is a perspective view of a clamping device for a sample tube according to an embodiment of the present utility model.

Description of the reference numerals

1. Mounting seat 11 base

12. Cover 13 mounting riser

14. Driving space 2 rotary driving piece

3. Driving gear of transmission assembly 31

32. Driven gear 33 bidirectional driving rotating shaft

331. First external thread segment 332 second external thread segment

4. Clamping assembly 41 drives the web

411. Nut sleeve of connecting plate 412

413. Nut sleeve main body 414 extension plate

42. Sliding frame 421 connecting vertical plate

422. Sliding plate 423 sliding block

43. Elastic clamping block 44 movable shaft

45. Elastic buffer 5 sliding rail

6. Guide shaft 7 stop plate

8. Bearing 9 spacer bush

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.

The clamping device for a sample tube and the sample analyzer according to the present utility model will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present utility model provides a clamping device for a sample tube, wherein the clamping device for a sample tube comprises:

a mounting base 1;

the rotary driving piece 2 is arranged on the mounting seat 1;

the transmission assembly 3 comprises a driving gear 31, a driven gear 32 and a bidirectional driving rotating shaft 33, wherein the driving gear 31 is sleeved at the output end of the rotary driving piece 2, the bidirectional driving rotating shaft 33 is rotatably arranged on the mounting seat 1, a first external thread section 331 and a second external thread section 332 with opposite rotation directions are formed at two ends of the bidirectional driving rotating shaft, and the driven gear 32 is meshed with the driving gear 31 and is sleeved on the bidirectional driving rotating shaft 33 between the first external thread section 331 and the second external thread section 332; and

the first ends of the two clamping assemblies 4 are respectively in threaded connection with the first external thread section 331 and the second external thread section 332 in a one-to-one correspondence, and the second ends are used for clamping or loosening the sample tube.

When the clamping device for the sample tube is used, as the clamping device comprises the mounting seat 1, the rotary driving piece 2, the transmission component 3 and the two clamping components 4, the rotary driving piece 2 is arranged on the mounting seat 1 and sequentially drives the driving gear 31, the driven gear 32 and the bidirectional driving rotating shaft 33 to rotate, the two ends of the bidirectional driving rotating shaft 33 are provided with the first external thread section 331 and the second external thread section 332 with opposite rotation directions, the first ends of the two clamping components 4 are respectively in threaded connection with the first external thread section 331 and the second external thread section 332 in one-to-one correspondence, namely, when the sample tube is required to be clamped, the rotary driving piece 2 is controlled to rotate forwards to drive the two clamping components 4 on the bidirectional driving rotating shaft 33 to move oppositely, and when the sample tube is required to be loosened, the rotary driving piece 33 is controlled to rotate reversely to drive the two clamping components 4 on the bidirectional driving rotating shaft 33 to move oppositely.

Specifically, the rotation driving member 2 is a stepping motor, so that the rotation speed and the rotation direction can be conveniently adjusted.

In the embodiment of the present utility model, the mounting base 1 is provided with a sliding rail 5 parallel to the bidirectional driving shaft 33, and both clamping assemblies 4 are movably arranged on the sliding rail 5. The slide rail 5 is used for supporting and guiding the clamping assembly 4, and ensures that the clamping assembly performs reciprocating linear motion in a given direction.

In the embodiment of the present utility model, the clamping assembly 4 includes a driving connection plate 41, a sliding frame 42, and an elastic clamping block 43 for clamping the sample tube, wherein a first end of the driving connection plate 41 is formed with an internal threaded hole through which the first external thread section 331 or the second external thread section 332 passes, an upper end of the sliding frame 42 is connected with a second end of the driving connection plate 41, and the elastic clamping block 43 is installed at a side facing to the other clamping assembly 4, and a lower end of the sliding frame 42 is movably disposed on the slide rail 5. When the sample tube is clamped, the elastic clamping block 43 plays a role in buffering to prevent the sample tube from being damaged, and meanwhile, the elastic clamping block 43 can better fit the sample tube due to deformation caused by extrusion, so that the friction force between the elastic clamping block and the sample tube is increased, and the sample tube is prevented from falling out of the clamping device in the uncapping process; the bidirectional driving rotating shaft 33 and the driving connecting plate 41 are in threaded transmission, the sliding frame 42 drives the sliding frame 42 to move along the sliding rail 5, the transmission process is stable, and the moving speed of the sliding frame 42 is convenient to control.

Specifically, the elastic clamping block 43 is formed with a clamping opening corresponding to the outer wall of the sample tube. Further, as shown in fig. 1, one driving connection board 41 is connected with one sliding frame 42, one elastic clamping block 43 is correspondingly arranged on one sliding frame 42, it should be noted that the number of sliding frames 42 connected on one driving connection board 41 is not limited to one, two or more sliding frames 42 are also possible, and one elastic clamping block 43 is arranged on each sliding frame 42, so that by the two clamping assemblies 4 arranged as described above, clamping of a plurality of sample tubes can be realized at the same time, and correspondingly, when the number of sliding frames 42 in one clamping assembly 4 is set to be multiple, the number of sliding rails 5 is also set to be corresponding to the number of sliding frames 42.

In the embodiment of the utility model, the sliding frame 42 is L-shaped and comprises a connecting vertical plate 421 and a sliding plate 422, the driving connecting plate 41 and the elastic clamping block 43 are respectively arranged on two opposite sides of the connecting vertical plate 421, and the sliding plate 422 is bent and extended from the lower end of the connecting vertical plate 421 towards the outer side (i.e. the side far away from the sample tube) and is movably arranged on the sliding rail 5. The sliding frame 42 is L-shaped, so that a sufficient contact area can be provided between the sliding plate 422 and the guide rail, and the stability of the sliding frame 42 during operation is ensured. Specifically, the lower end of the sliding plate 422 is provided with a sliding block 423, and the sliding block 423 is connected with the sliding rail 5.

In the embodiment of the present utility model, the clamping assembly 4 further includes a moving shaft 44 and an elastic buffer member 45, the moving shaft 44 is disposed on a side of the sliding frame 42 away from the elastic clamping block 43, the elastic buffer member 45 is sleeved on the moving shaft 44, and the second end of the driving connection plate 41 is provided with a moving hole through which the moving shaft 44 passes and is located on a side of the elastic buffer member 45 away from the sliding frame 42. When the sample tube is clamped, the elastic buffer piece 45 is compressed under force, and the impact of the sample tube during clamping can be further reduced through the elastic buffer piece 45, so that the sample tube is prevented from being damaged; the movable shaft 44 is used to connect the slider 42 and the drive connection plate 41, and allows relative movement therebetween to compress the elastic buffer 45. Specifically, the distal end of the movable shaft 44 is externally threaded to be coupled to the slider 42, and a stopper is formed at an end of the movable shaft 44 extending from the elastic clamping block 43 to the drive connection plate 41 to prevent the movable shaft 44 from being removed from the movement hole. More specifically, a contour screw is selected as the movable shaft 44, a spring is selected as the elastic buffer 45, two contour screws are connected to each sliding frame 42, and a spring is sleeved on each contour screw.

In the embodiment of the present utility model, the driving connection board 41 includes a connection board body 411 and a nut sleeve 412, a light hole is formed at a first end of the connection board body 411, the nut sleeve 412 is disposed on the connection board body 411 corresponding to the light hole, the first external thread section 331 or the second external thread section 332 sequentially passes through the light hole and the nut sleeve 412, and a second end of the connection board body 411 is connected with an upper end of the sliding frame 42. When the nut sleeve 412 is installed, the connecting plate 411 is sleeved on the bidirectional driving rotating shaft 33, the nut sleeve 412 is rotatably installed on the first external thread section 331 or the second external thread section 332, and finally the connecting plate 411 and the nut sleeve 412 are fixed by using a fastener. Specifically, the nut sleeve 412 includes a nut sleeve body 413 and an extension plate 414 extending outward from the nut sleeve body 413, wherein the nut sleeve body 413 is inserted into the unthreaded hole and is formed with an internal threaded hole corresponding to the first external threaded section 331 or the second external threaded section 332, and the extension plate 414 abuts against the outer side surface of the connecting plate body 411 and is formed with a connecting hole for the fastener to pass through.

In the embodiment of the utility model, the clamping device for the sample tube further comprises a guide shaft 6 arranged on the mounting seat 1, wherein guide holes are formed in both clamping assemblies 4, and two ends of the guide shaft 6 are correspondingly arranged through the guide holes of the two clamping assemblies 4 one by one. The guide shaft 6 serves to improve the stability of the reciprocating rectilinear movement of the clamping assembly 4. Specifically, the guide shaft 6 extends from both ends of the two clamping assemblies 4 to form stop plates 7, and the stop plates 7 are used for limiting the maximum displacement of the two clamping assemblies 4 when the two clamping assemblies 4 move oppositely to prevent the clamping assemblies 4 from being separated from the guide shaft 6.

In the embodiment of the utility model, a guide sleeve through which the guide shaft 6 passes is arranged in the guide hole. The guide sleeve can reduce friction and prolong the service life of the guide shaft 6.

In the embodiment of the utility model, the mounting seat 1 comprises a base 11, a cover plate 12 and two mounting vertical plates 13, the two mounting vertical plates 13 are oppositely arranged at intervals, the upper end and the lower end of the two mounting vertical plates are respectively connected with the cover plate 12 and the base 11 to form a transmission space 14, the rotary driving part 2 is positioned at the outer side of the transmission space 14, the output end of the rotary driving part extends into the transmission space 14, the driving gear 31 and the driven gear 32 are both arranged in the transmission space 14, the bidirectional driving rotating shaft 33 rotatably penetrates through the two mounting vertical plates 13, the two clamping assemblies 4 are respectively arranged at the outer sides of the two mounting vertical plates 13, and are in threaded connection with a first external thread section 331 and a second external thread section 332 of the bidirectional driving rotating shaft 33 extending out of the transmission space 14 in a one-to-one correspondence. By constructing the transmission space 14, a hidden design of the driving gear 31 and the driven gear 32 is facilitated.

Specifically, the transmission assembly 3 further comprises a bearing 8 and a spacer bush 9, the mounting vertical plate 13 is provided with a bearing hole for accommodating the bearing 8, the spacer bush 9 is sleeved on the bidirectional driving rotating shaft 33 and is positioned between the driven gear 32 and the bearing 8, and the spacer bush 9 has the function of preventing the driven gear 32 from moving along the axial direction of the bidirectional driving rotating shaft 33, so that the reliability of transmission is ensured.

In addition, the utility model also provides a sample analyzer, wherein the sample analyzer comprises the clamping device for the sample tube. The sample analyzer adopts all the technical solutions of the above embodiments, so that the sample analyzer has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A clamping device for a sample tube, the clamping device comprising:

a mounting base (1);

the rotary driving piece (2) is arranged on the mounting seat (1);

the transmission assembly (3) comprises a driving gear (31), a driven gear (32) and a bidirectional driving rotating shaft (33), wherein the driving gear (31) is sleeved at the output end of the rotary driving piece (2), the bidirectional driving rotating shaft (33) is rotatably arranged on the mounting seat (1), a first external thread section (331) and a second external thread section (332) with opposite rotation directions are formed at two ends of the bidirectional driving rotating shaft, and the driven gear (32) is connected with the driving gear (31) in a meshed mode and sleeved on the bidirectional driving rotating shaft (33) between the first external thread section (331) and the second external thread section (332); and

and the two clamping assemblies (4) are respectively in one-to-one correspondence with the first external thread sections (331) and the second external thread sections (332) at the first ends of the two clamping assemblies (4), and the second ends are used for clamping or loosening the sample tube.

2. Clamping device for a sample tube according to claim 1, characterized in that the mounting base (1) is provided with a slide rail (5) arranged parallel to the bi-directional drive shaft (33), both clamping assemblies (4) being movably arranged on the slide rail (5).

3. Clamping device for a sample tube according to claim 2, characterized in that the clamping assembly (4) comprises a drive connection plate (41), a sliding frame (42) and an elastic clamping block (43) for clamping the sample tube, wherein the first end of the drive connection plate (41) is formed with an internally threaded hole for the first externally threaded section (331) or the second externally threaded section (332) to pass through, the upper end of the sliding frame (42) is connected with the second end of the drive connection plate (41), and the elastic clamping block (43) is mounted on the side arranged towards the other clamping assembly (4), and the lower end of the sliding frame (42) is movably arranged on the sliding rail (5).

4. A clamping device for a sample tube according to claim 3, wherein the sliding frame (42) is L-shaped and comprises a connecting vertical plate (421) and sliding plates (422), the driving connecting plate (41) and the elastic clamping block (43) are respectively arranged on two opposite sides of the connecting vertical plate (421), and the sliding plates (422) are bent, extended and arranged towards the outer side from the lower end of the connecting vertical plate (421) and are movably arranged on the sliding rail (5).

5. A clamping device for a sample tube according to claim 3, wherein the clamping assembly (4) further comprises a moving shaft (44) and an elastic buffer member (45), the moving shaft (44) is arranged at one side of the sliding frame (42) away from the elastic clamping block (43), the elastic buffer member (45) is sleeved on the moving shaft (44), and the second end of the driving connecting plate (41) is provided with a moving hole for the moving shaft (44) to pass through and is positioned at one side of the elastic buffer member (45) away from the sliding frame (42).

6. A clamping device for a sample tube according to claim 3, characterized in that the drive connection plate (41) comprises a connection plate body (411) and a nut sleeve (412), wherein a light hole is formed in a first end of the connection plate body (411), the nut sleeve (412) is arranged on the connection plate body (411) corresponding to the light hole, the first external thread section (331) or the second external thread section (332) sequentially passes through the light hole and the nut sleeve (412), and a second end of the connection plate body (411) is connected with an upper end of the sliding frame (42).

7. Clamping device for a sample tube according to any of claims 1 to 6, characterized in that it further comprises a guiding shaft (6) provided on the mounting base (1), both clamping assemblies (4) being formed with guiding holes, both ends of the guiding shaft (6) being provided through the guiding holes of both clamping assemblies (4) in a one-to-one correspondence.

8. Clamping device for a sample tube according to claim 7, characterized in that a guiding sleeve is provided in the guiding hole for the guiding shaft (6) to pass through.

9. Clamping device for a sample tube according to any one of claims 1 to 6, characterized in that the mounting base (1) comprises a base (11), a cover plate (12) and two mounting vertical plates (13), the two mounting vertical plates (13) are arranged at opposite intervals and are respectively connected with the cover plate (12) and the base (11) at the upper end and the lower end so as to form a transmission space (14), the rotary driving piece (2) is positioned at the outer side of the transmission space (14) and the output end extends into the transmission space (14), the driving gear (31) and the driven gear (32) are both arranged in the transmission space (14), the bidirectional driving rotating shaft (33) is rotatably arranged on the two mounting vertical plates (13), and the two clamping assemblies (4) are respectively arranged at the outer sides of the two mounting vertical plates (13) and are in threaded connection with the first external threaded section (331) and the second threaded section (332) of the transmission space (14) in a one-to-one correspondence.

10. A sample analyzer, characterized in that it comprises a clamping device for a sample tube according to any of claims 1 to 9.