CN211003508U - Rack pipe clamping mechanism - Google Patents
Rack pipe clamping mechanism Download PDFInfo
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- CN211003508U CN211003508U CN201922194048.1U CN201922194048U CN211003508U CN 211003508 U CN211003508 U CN 211003508U CN 201922194048 U CN201922194048 U CN 201922194048U CN 211003508 U CN211003508 U CN 211003508U
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- base body
- guide rod
- clamping mechanism
- racks
- pipe
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Abstract
The utility model discloses a rack tube clamping mechanism, which comprises a base body, an even number of clamping jaws arranged along the radial direction of the base body in a sliding way, a driving device for driving the plurality of clamping jaws to be opened or closed, a tube pushing block arranged along the axial direction of the base body in a sliding way, and an elastic element A for driving the tube pushing block to push a sample test tube away from the clamping jaws; the pipe pushing block is arranged between the clamping jaws; the driving device comprises a rotary driving device, a gear fixed at the output end of the rotary driving device and a plurality of groups of racks distributed along the axial direction of the base body; each group of racks comprises two opposite racks which are meshed with the gear; the multiple groups of racks are arranged in a cross mode, and the multiple racks are fixedly connected with the multiple clamping jaws respectively. The utility model discloses a rotation driving device drives the gear revolve to drive every rack of group motion in opposite directions, and then make the clamping jaw open or closed, reach the purpose that presss from both sides tightly or loosen the sample test tube.
Description
Technical Field
The utility model belongs to the technical field of biological sample storage, concretely relates to rack clamp pipe mechanism.
Background
The biological sample needs to be stored in a low temperature environment to maintain the activity of the biological sample. Currently, biological sample banks are used to store biological samples. Specifically, the sample tubes containing the biological samples are placed in the sample box, the sample box is placed in the biological sample library, and liquid nitrogen is filled in the biological sample library, so that low-temperature storage of the biological samples is realized. When a biological sample is put into or taken out from a biological sample library, generally, only a part of sample tubes in a sample box are taken and put, and therefore, a tube clamping mechanism for clamping the sample tubes needs to be designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem of clamping the sample test tube in the prior art, the utility model aims to provide a rack tube clamping mechanism. The utility model discloses a rotation driving device drives the gear revolve to drive every rack of group motion in opposite directions, and then make the clamping jaw open or closed, reach the purpose that presss from both sides tightly or loosen the sample test tube.
The utility model discloses the technical scheme who adopts does:
a rack tube clamping mechanism comprises a base body, an even number of clamping jaws arranged in a sliding mode along the radial direction of the base body, a driving device for driving the plurality of clamping jaws to be opened or closed, a tube pushing block arranged in a sliding mode along the axial direction of the base body, and an elastic element A for driving the tube pushing block to push a sample test tube away from the clamping jaws; the pipe pushing block is arranged between the clamping jaws; the driving device comprises a rotary driving device, a gear fixed at the output end of the rotary driving device and a plurality of groups of racks distributed along the axial direction of the base body; each group of racks comprises two opposite racks which are meshed with the gear; the multiple groups of racks are arranged in a cross mode, and the multiple racks are fixedly connected with the multiple clamping jaws respectively.
As a further alternative of the rack tube clamping mechanism, the rack tube clamping mechanism further comprises a tube pressing block arranged in a sliding mode along the axial direction of the base body and an elastic element B for driving the tube pressing block to move towards the sample test tube; the pipe pressing block is provided with a plurality of avoiding holes for avoiding the clamping jaws.
As a further alternative of the rack pipe clamping mechanism, the rack pipe clamping mechanism further comprises at least two guide rods A which penetrate through the base body along the axial direction of the base body; a plurality of one end of the guide rod A is provided with a limiting part A, and the other end of the guide rod A is detachably connected with the push pipe block.
As a further alternative of the rack pipe clamping mechanism, the elastic element a is a compression spring a sleeved outside the guide rod a; and two ends of the compression spring A are respectively abutted against the pipe pushing block and the base body.
As a further alternative of the rack pipe clamping mechanism, the pipe pushing block is provided with a through hole A matched with the guide rod A; the wall of the through hole A is provided with a through threaded hole A; and a set screw A is matched with the internal thread of the threaded hole A.
As a further alternative of the rack pipe clamping mechanism, a groove A is formed in the outer circular surface of the guide rod A positioned in the through hole A; one end of the set screw A extends into the groove A.
As a further alternative of the rack pipe clamping mechanism, the rack pipe clamping mechanism further comprises at least two guide rods B which penetrate through the base body along the axial direction of the base body; and one end of each guide rod B is provided with a limiting part B, and the other end of each guide rod B is detachably connected with the pressure pipe block.
As a further alternative of the rack pipe clamping mechanism, the elastic element B is a compression spring B sleeved outside the guide rod B; and two ends of the compression spring B are respectively abutted against the pipe pressing block and the base body.
As a further alternative of the rack pipe clamping mechanism, the pipe pressing block is provided with a through hole B matched with the guide rod B; the wall of the through hole B is provided with a through threaded hole B; and a set screw B is matched with the internal thread of the threaded hole B.
As a further alternative of the rack pipe clamping mechanism, a groove B is formed in the outer circular surface of the guide rod B in the through hole B; one end of the set screw B extends into the groove B.
The utility model has the advantages that:
the utility model discloses a rotation driving device drives the gear revolve to drive every rack of group motion in opposite directions, and then make the clamping jaw open or closed, reach the purpose that presss from both sides tightly or loosen the sample test tube.
Other advantageous effects of the present invention will be described in detail in the detailed description of the invention.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, it should be understood that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a rack pipe clamping mechanism of the present invention;
FIG. 2 is a schematic structural view of the rack pipe clamping mechanism shown in FIG. 1, with a pipe pressing block and a pipe pushing block omitted;
FIG. 3 is a schematic structural view of the rack pipe clamping mechanism shown in FIG. 1 without a pipe pressing block;
FIG. 4 is a schematic structural view of a rotary driving device in the rack pipe clamping mechanism shown in FIG. 1;
FIG. 5 is a schematic structural view of the nut to base connection, the screw to base connection, and the screw and nut connection of the rack clamping mechanism shown in FIG. 4;
FIG. 6 is an enlarged view of the area A in FIG. 7;
FIG. 7 is a schematic structural view of a driving mechanism A in the rack bar pipe clamping mechanism shown in FIG. 4;
fig. 8 is a schematic structural view of the rotary driving device connected to each clamping jaw in the rack pipe clamping mechanism shown in fig. 4.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, the rack tube clamping mechanism of the present embodiment includes a base body 2, an even number of clamping jaws 7 slidably disposed along a radial direction of the base body 2, a driving device for driving the plurality of clamping jaws 7 to open or close, a tube pushing block 3 slidably disposed along an axial direction of the base body 2, and an elastic element a20 for driving the tube pushing block 3 to push a sample tube away from the clamping jaws; the pipe pushing block 3 is arranged among a plurality of clamping jaws 7; the driving device comprises a rotary driving device 1, a gear 8 fixed at the output end of the rotary driving device and a plurality of groups of racks 10 distributed along the axial direction of the base body 2; each group of racks 10 comprises two opposite racks 10 which are meshed with the gear 8; the multiple groups of racks 10 are arranged in a crossed manner, and the multiple racks 10 are fixedly connected with the multiple clamping jaws 7 respectively.
In fig. 1, the Z direction is an axial direction of the base body 2, and a direction perpendicular to the Z direction is a radial direction of the base body 2.
When N ═ 1, that is, when two clamping jaws 7 are provided, clamping jaws 7 are arranged opposite to each other, and the profile of the sample tube is provided on the opposite faces of two clamping jaws 7, so that it is ensured that two clamping jaws 7 can clamp the sample tube. In this embodiment, N is 2, that is, four jaws 7 are provided, as shown in fig. 1 and 2, two sets of racks 10 are provided, and two sets of racks 10 are orthogonally provided, and four racks 10 are respectively fixedly connected to the four jaws 7.
The sliding connection between the clamping jaw 7 and the base body 2 can be realized by using the prior art, such as a sliding groove and sliding block structure and a guide post and bushing structure. In this embodiment, the sliding connection between the clamping jaws 7 and the base body 2 is realized by means of linear guides 9 arranged between the clamping jaws 7 and the base body 2, as shown in fig. 2. Specifically, the guide rail 91 of the linear guide 9 is fixedly connected with the base body 2, and the slider 92 of the linear guide 9 is fixedly connected with the clamping jaw 7. In this way, direct contact of the clamping jaws 7 with the base body 2, which leads to wear of the base body 2, is avoided.
The sliding connection between the pipe pushing block 3 and the base body 2 can also be realized by adopting a sliding connection structure between the clamping jaw 7 and the base body 2. In the embodiment, as shown in fig. 1, the sliding connection between the tube pushing block 3 and the base body 2 is realized by a plurality of guide rods a5, specifically, a plurality of guide rods a5 axially penetrate through the base body 2 along the base body 2; one end of each guide rod A is provided with a limiting part A51, and the other end of each guide rod A is detachably connected with the push pipe block 3. The stopper portion a51 functions to prevent the guide bar a51 from being detached from the base body 2.
In this embodiment, as shown in fig. 1, a bushing is disposed between each guide rod a5 and the base body 2 to prevent the guide rod a5 from directly contacting the base body 2, which may cause the base body 2 to wear.
The elastic member a20 may be implemented by using an extension spring, a compression spring, a leaf spring, etc. known in the art. As shown in FIG. 1, in the present embodiment, the elastic member A20 is a compression spring A sleeved outside the guide rod A5; two ends of the compression spring A respectively lean against the push pipe block 3 and the base body 2.
As shown in fig. 1 and 2, in the present embodiment, the tube pushing block 3 is provided with a through hole a adapted to the guide rod a 5; the hole wall of the through hole A is provided with a through threaded hole A31; threaded hole a31 is internally threaded with a set screw a (not shown). Thus, the position of the ejector block 3 on the guide rod A5 can be adjusted, and the initial elastic force of the compression spring A can be adjusted.
As shown in fig. 3, a groove a52 is formed on the outer circumferential surface of the guide rod a5 located in the through hole a, and the set screw a extends into the groove a52, so as to avoid the problem that the push block 3 falls off due to insufficient friction force.
When this rack tube clamping mechanism put into the sample box with the sample test tube, push away the pipe block 3 under elastic element A20's elasticity effect, push away the clamping jaw 7 with the sample test tube to avoid the sample test tube to bond on clamping jaw 7 because of low temperature.
As shown in fig. 1, the link clamping mechanism in this embodiment further includes a clamping block 4 slidably disposed along the axial direction of the base body 2, and an elastic member B21 for driving the clamping block 4 to move toward the sample tube; the tube pressing block 4 is provided with an avoiding hole 42 avoiding the plurality of clamping jaws 7. Through setting up pressure pipe piece 4, before 7 take out the sample test tube from the sample box at clamping jaw or put into the sample box with the sample test tube before, utilize pressure pipe piece 4 to compress tightly other sample test tubes and sample box earlier, avoid getting and put sample test tube in-process, other sample test tubes rock and lead to damaging or bonding problem.
The sliding connection between the pipe pressing block 4 and the base body 2 can also be realized by adopting a sliding connection structure between the clamping jaw 7 and the base body 2. In the present embodiment, as shown in fig. 1, the sliding connection between the pressure tube block 4 and the base body 2 is realized by a plurality of guide rods B6, specifically, a plurality of guide rods B6 axially penetrate through the base body 2 along the base body 2; one end of each guide rod B6 is provided with a limiting part B61, and the other end of each guide rod B6 is detachably connected with the pressure pipe block 4.
In this embodiment, as shown in fig. 1, a bushing is disposed between each guide rod B6 and the base body 2 to prevent the guide rod B6 from directly contacting the base body 2, which may cause the base body 2 to wear.
The elastic member B21 may be implemented by using an extension spring, a compression spring, a leaf spring, etc. known in the art. As shown in fig. 1, in the present embodiment, the elastic element B21 is a compression spring B sleeved outside the guide rod B; two ends of the compression spring B respectively abut against the pipe pressing block 4 and the base body 2.
As shown in fig. 1 and 2, the pressure pipe block 4 is provided with a through hole B adapted to the guide rod B; the hole wall of the through hole B is provided with a through threaded hole B41; threaded hole B41 is internally threaded with set screw B (not shown). In this way, the position of the pressure tube block 4 on the guide rod B6 can be adjusted, and the initial elastic force of the compression spring B can be adjusted. As shown in fig. 3, a groove B62 is formed on the outer circumferential surface of the guide rod B6 located in the through hole B, and the set screw B abuts against the bottom of the groove B62, so that the problem that the push pipe block 3 falls off due to insufficient friction force is avoided.
The rotary drive device 1 may be implemented by a rotary drive device known in the art, such as an electric motor, a hydraulic motor, or a pneumatic motor. Specifically, the motor, the hydraulic motor or the pneumatic motor is fixedly connected with the base body 2, and the output end of the motor, the hydraulic motor or the pneumatic motor is fixedly connected with the gear 8 or in transmission connection through a transmission mechanism.
In this embodiment, as shown in fig. 4 and 5, the rotation driving device 1 includes a hollow screw rod 11, a nut 18 which is sleeved outside the screw rod 11 and is in threaded fit with the screw rod 11, a base 13 which is sleeved outside the nut 18 and is rotatably connected with the nut 18, a rotating shaft 17 which is rotatably supported in the screw rod 11, a driving mechanism a12 which is fixed at one end of the screw rod 11 and drives the rotating shaft 17 to rotate, and a driving mechanism B14 which is fixedly connected with the base 13 and drives the nut 18 to rotate; an anti-rotation structure for preventing the screw rod 11 from rotating is arranged between the base 13 and the screw rod 11; the rotating shaft 17 is arranged along the axial direction of the screw 11, and one end of the rotating shaft 17 far away from the driving mechanism a12 penetrates through the screw 11.
The driving mechanism A12 and the driving mechanism B14 can be realized by adopting the existing rotary driving pieces such as a motor, a hydraulic motor and the like, and can also be realized by adopting a motor and a transmission mechanism such as a speed reducer and the like.
As shown in fig. 4 and 7, the driving mechanism a12 in the present embodiment includes a mounting plate 124 fixed to one end of the screw 11, a motor a123 fixed to a side of the mounting plate 124 remote from the screw 11, and a transmission mechanism a provided between the motor a123 and the rotary shaft 17. The transmission mechanism A can be realized by a gear transmission mechanism, a chain transmission mechanism or a belt transmission mechanism and other transmission mechanisms known in the field. In the present embodiment, as shown in fig. 4, the transmission mechanism a includes a timing pulley a121, a timing pulley B122, and a timing belt wrapped around the timing pulley a121 and the timing pulley B122. The synchronous belt wheel A121 and the synchronous belt wheel B122 are respectively and fixedly connected with the output end of the motor A123 and one end of the rotating shaft 17 far away from the clamping mechanism 2; the motor a123 rotates, and the rotating shaft 17 is driven to rotate through the transmission mechanism a.
As shown in fig. 4, the driving mechanism B14 in the present embodiment includes a motor B141 fixed to the base 13 and a transmission mechanism B provided between the motor B141 and the nut 18. The transmission mechanism B can be realized by a gear transmission mechanism, a chain transmission mechanism or a belt transmission mechanism and other transmission mechanisms known in the art. In the present embodiment, as shown in fig. 4, the transmission mechanism B includes a timing pulley C142, a timing pulley D143, and a timing belt (not shown) wrapped around the timing pulley C142 and the timing pulley D143. The synchronous belt wheel C142 and the synchronous belt wheel D143 are respectively fixedly connected with the output end of the motor B141 and the nut 18; the motor B141 rotates to drive the nut 18 to rotate through the transmission mechanism B, and the nut 18 rotates to drive the screw 11 and the rotating shaft 17 in the screw 11 to lift.
In order to slow down the wear of the nut 18 and reduce the resistance to the rotation of the nut 18, in this embodiment, as shown in fig. 5, a bearing B15 is disposed between the nut 18 and the base 13, specifically, the base 13 is provided with a bearing hole a, an outer ring of the bearing B15 is in interference fit with the bearing hole a, and an inner ring of the bearing B15 is in interference fit with an outer circumferential surface of the nut 18.
The purpose of the anti-rotation structure is to prevent the screw 11 from rotating with the nut 18. The rotation-preventing structure can be realized by adopting a guide mechanism, for example, a guide rod eccentric to the screw rod 11 can be arranged, the guide rod is in sliding fit with the base 13, and one end of the guide rod is fixedly connected with the screw rod 11.
As shown in fig. 5 and 6, the anti-rotation structure in this embodiment includes a long groove 111 formed along the axial direction of the screw 11, and an anti-rotation protrusion 161 disposed in the long groove 111; one of the base 13 and the screw 11 has a long slot 111, and the other is fixedly connected to the rotation-stopping protrusion 161. In this embodiment, as shown in fig. 6, one end of the base 13 away from the nut 18 is fixedly connected with a rotation stopping nut 16, the rotation stopping nut 16 is in threaded fit with the screw 11, a rotation stopping protrusion 161 adapted to the elongated slot 111 is fixed on an inner wall of the rotation stopping nut 16, and the elongated slot 111 is opened on an outer surface of the screw, so that the size of the base 13 along the axial direction of the screw 11 can be greatly reduced.
In the present embodiment, as shown in fig. 6, the rotation stop projection 161 is elongated and is provided along the axial direction of the screw 11. Thus, the contact length between the rotation stop projection 161 and the long groove 111 is increased, and the angle of rotation of the screw 11 is greatly reduced.
In order to slow down the wear of the rotating shaft 17 and reduce the resistance to the rotation of the rotating shaft 17, in this embodiment, as shown in fig. 7 and 8, bearings a19 are respectively sleeved at two ends of the rotating shaft 17 extending out of the screw 11, inner rings of two bearings a19 are in interference fit with the rotating shaft 17, outer rings of two bearings a19 are in interference fit with the mounting plate 124 and the mounting seat 21 respectively, and compared with the case that the bearings a19 are installed between the rotating shaft 17 and the screw 11, the diameter of the screw 11 can be greatly reduced.
As shown in fig. 8, one end of the rotating shaft 17 far from the driving mechanism a12 is fixedly connected with the gear 8.
Through set up pivot 17 in hollow screw rod 11, utilize nut 18 drive screw rod 11 and pivot 17 lift with screw rod 11 screw-thread fit, reuse actuating mechanism A12 drive pivot 17 rotatory, drive gear 8 rotatory to drive every group rack 10 and remove in opposite directions, make clamping jaw 7 open the closure, thereby loosen or press from both sides tight sample test tube. Since the driving mechanism a12 is far away from the clamping jaw 7, that is, there is no air pipe, sensor cable or/and cable around the clamping jaw 7, the clamping jaw 7 is prevented from interfering with the pipeline, and simultaneously the pipeline can be prevented from taking up other sample test tubes in the sample box.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. The rack pipe clamping mechanism is characterized in that: the sample tube pushing device comprises a base body, an even number of clamping jaws arranged in a sliding mode along the radial direction of the base body, a driving device for driving the plurality of clamping jaws to be opened or closed, a tube pushing block arranged in a sliding mode along the axial direction of the base body, and an elastic element A for driving the tube pushing block to push a sample tube away from the clamping jaws; the pipe pushing block is arranged between the clamping jaws; the driving device comprises a rotary driving device, a gear fixed at the output end of the rotary driving device and a plurality of groups of racks distributed along the axial direction of the base body; each group of racks comprises two opposite racks which are meshed with the gear; the multiple groups of racks are arranged in a cross mode, and the multiple racks are fixedly connected with the multiple clamping jaws respectively.
2. The rack pipe clamping mechanism according to claim 1, wherein: the sample tube pressing device also comprises a tube pressing block arranged in a sliding manner along the axial direction of the base body and an elastic element B for driving the tube pressing block to move towards the sample tube; the pipe pressing block is provided with a plurality of avoiding holes for avoiding the clamping jaws.
3. The rack pipe clamping mechanism according to claim 1, wherein: the guide rod A penetrates through the base body along the axial direction of the base body; a plurality of one end of the guide rod A is provided with a limiting part A, and the other end of the guide rod A is detachably connected with the push pipe block.
4. The rack pipe clamping mechanism according to claim 3, wherein: the elastic element A is a compression spring A sleeved outside the guide rod A; and two ends of the compression spring A are respectively abutted against the pipe pushing block and the base body.
5. The rack pipe clamping mechanism according to claim 3, wherein: the push pipe block is provided with a through hole A matched with the guide rod A; the wall of the through hole A is provided with a through threaded hole A; and a set screw A is matched with the internal thread of the threaded hole A.
6. The rack pipe clamping mechanism according to claim 5, wherein: a groove A is formed in the outer circular surface of the guide rod A positioned in the through hole A; one end of the set screw A extends into the groove A.
7. The rack pipe clamping mechanism according to claim 2, wherein: the guide rod B penetrates through the base body along the axial direction of the base body; and one end of each guide rod B is provided with a limiting part B, and the other end of each guide rod B is detachably connected with the pressure pipe block.
8. The rack pipe clamping mechanism according to claim 7, wherein: the elastic element B is a compression spring B sleeved outside the guide rod B; and two ends of the compression spring B are respectively abutted against the pipe pressing block and the base body.
9. The rack pipe clamping mechanism according to claim 7, wherein: the pressure pipe block is provided with a through hole B matched with the guide rod B; the wall of the through hole B is provided with a through threaded hole B; and a set screw B is matched with the internal thread of the threaded hole B.
10. The rack pipe clamping mechanism according to claim 9, wherein: a groove B is formed in the outer circular surface of the guide rod B positioned in the through hole B; one end of the set screw B extends into the groove B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922194048.1U CN211003508U (en) | 2019-12-09 | 2019-12-09 | Rack pipe clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922194048.1U CN211003508U (en) | 2019-12-09 | 2019-12-09 | Rack pipe clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211003508U true CN211003508U (en) | 2020-07-14 |
Family
ID=71498616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922194048.1U Active CN211003508U (en) | 2019-12-09 | 2019-12-09 | Rack pipe clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211003508U (en) |
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2019
- 2019-12-09 CN CN201922194048.1U patent/CN211003508U/en active Active
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Address after: 611730 129 Shengli North Street, Deyuan town (Jingrong town), Pidu District, Chengdu City, Sichuan Province Patentee after: Base Biotechnology (Chengdu) Co.,Ltd. Address before: 611730 129 Shengli North Street, Deyuan town (Jingrong town), Pidu District, Chengdu City, Sichuan Province Patentee before: JIDIAN WEIKE (CHENGDU) MEDICAL ROBOT TECHNOLOGY Co.,Ltd. |
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