CN219943226U - Mechanism capable of automatically locking centrifuge rotor - Google Patents
Mechanism capable of automatically locking centrifuge rotor Download PDFInfo
- Publication number
- CN219943226U CN219943226U CN202321038159.3U CN202321038159U CN219943226U CN 219943226 U CN219943226 U CN 219943226U CN 202321038159 U CN202321038159 U CN 202321038159U CN 219943226 U CN219943226 U CN 219943226U
- Authority
- CN
- China
- Prior art keywords
- output shaft
- extrusion
- locating pin
- driving head
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000001125 extrusion Methods 0.000 claims abstract description 73
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000005484 gravity Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
Abstract
The utility model discloses a mechanism capable of automatically locking a centrifuge rotor, which comprises a driving motor, a driving head, an extrusion piece and a rotor, wherein the driving motor is vertically upwards provided with an output shaft, and the end part of the output shaft is in a conical shape; the bottom of the driving head is provided with a conical-like extrusion groove, the driving head is detachably spliced with the output shaft through the extrusion groove, and the top of the driving head is provided with a plurality of first positioning pins and/or a plurality of first positioning pin grooves; the extrusion piece is used for enabling the end part of the output shaft to be in inclined plane extrusion with the extrusion groove; the bottom of the rotor is provided with a plurality of second locating pins and/or a plurality of second locating pin grooves, the second locating pins are in one-to-one correspondence with the first locating pin grooves, the second locating pin grooves are in one-to-one correspondence with the first locating pins, the second locating pins are used for being inserted into the corresponding first locating pin grooves, and the second locating pin grooves are used for being inserted into the corresponding first locating pins. The rotor can solve the problem of complex disassembly during rotor replacement on the premise of ensuring stable transmission of the rotor.
Description
Technical Field
The utility model relates to the technical field of centrifuges, in particular to a mechanism capable of automatically locking a centrifuge rotor.
Background
The laboratory often needs to carry out centrifugation to the material in the test tube, and this process generally adopts centrifuge to carry out, and the rotor of centrifuge is used for bearing test tube's platform promptly, and its top surface has a plurality of tube holes, before the centrifugation with test tube insert in the tube hole can. In order to fully and effectively fix a test tube and prevent the test tube from falling off or being thrown out during centrifugation, the tube holes are reasonably matched with the outer diameter and the length of the test tube, and because the test tubes with different model parameters have different diameters and lengths, a plurality of replaceable rotors are correspondingly designed, and the tube hole parameters of each rotor have differentiation. Before use, the type of the rotor needs to be correspondingly confirmed according to the type of the test tube, so that the rotor needs to be replaced frequently.
The existing rotor is commonly connected with an output shaft of a motor in an auxiliary mode through fixing components such as bolts or spring clamps, complex disassembly and assembly operations are needed to be carried out when the rotor is replaced every time, mechanical abrasion of the rotor and the output shaft is inevitably caused by frequent disassembly operations, accordingly fixing performance of the fixing components is reduced, matching precision of a connecting position is reduced, transmission performance between the output shaft and the rotor is affected slightly, damage to the rotor or the output shaft is caused by heavy weight, and even accidents are caused.
Disclosure of Invention
The utility model aims to provide a mechanism capable of automatically locking a centrifuge rotor, which can solve the problem of complex disassembly when the rotor is replaced on the premise of ensuring stable transmission of the rotor.
The utility model is realized by the following technical scheme:
the mechanism capable of automatically locking the rotor of the centrifugal machine comprises a driving motor, wherein an output shaft is vertically upwards arranged on the driving motor, and the end part of the output shaft is in a conical shape; the driving head is provided with a conical-like extrusion groove at the bottom, the driving head is detachably connected with the output shaft through the extrusion groove, and a plurality of first positioning pins and/or a plurality of first positioning pin grooves are arranged at the top of the driving head; an extrusion member for inclined-plane extrusion of the end portion of the output shaft and the extrusion groove; the rotor, the rotor bottom is equipped with a plurality of second locating pins and/or a plurality of second locating pin grooves, the second locating pin with first locating pin groove one-to-one, the second locating pin groove with first locating pin one-to-one, the second locating pin is used for with corresponding first locating pin groove grafting, the second locating pin groove is used for with corresponding first locating pin grafting.
Optionally, an extrusion hole is formed in the end face of the output shaft along the axial direction, an internal thread is formed in the extrusion hole, the extrusion piece is a bolt, and the extrusion piece is inserted into the top face of the driving head along the vertical direction and screwed with the extrusion hole, so that the end part of the output shaft and the extrusion groove are subjected to inclined plane extrusion.
Optionally, the output shaft is slidably connected to the driving motor, so that the output shaft can slide in an axial direction.
Optionally, the output shaft is rotatably sleeved with a bearing, the diameter of the inner ring of the bearing is slightly larger than the diameter of the output shaft, and the diameter of the inner ring of the bearing is smaller than the maximum diameter of the conical end part of the output shaft.
Optionally, the bottom surface of the conical end part of the output shaft is in arc transition.
Optionally, the bottom of the driving head is provided with an extrusion ring edge, the inner diameter of the extrusion ring edge is matched with the outer diameter of the bearing outer ring, the extrusion ring edge is used for coating the bearing, and the bottom end of the bearing inner ring is in contact with the driving motor, so that a gap is reserved between the bottom end of the bearing outer ring and the driving motor.
Optionally, a slot is formed at the bottom of the rotor, and the driving head is matched with the slot and is inserted into the slot.
Optionally, the extrusion ring is provided with first conical surface along the top surface of outer wall, the notch of slot is provided with the second conical surface, first conical surface can carry out the inclined plane extrusion with the second conical surface to make the extrusion ring along holding tightly the outer loop of bearing.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
according to the mechanism capable of automatically locking the centrifuge rotor, the driving head is arranged, so that direct connection between the driving motor and the rotor is converted into indirect connection through the driving head, replacement of the rotor is converted into separation from the output shaft, and the driving head and the output shaft are fully fixed during installation, and then the driving head is not required to be detached, and only the rotor and the driving head are required to be connected and separated, so that the problems of mechanical abrasion of the output shaft and the rotor and influence on transmission performance caused by frequent disassembly are avoided; on the basis, the end part of the output shaft is in a conical shape, the bottom of the driving head is provided with an extrusion groove, and an extrusion part is arranged, so that the end part of the output shaft and the extrusion groove can be extruded tightly by utilizing an inclined plane extrusion mode, the driving head and the output shaft are effectively fixed, and the effective transmission of the torsion of the output shaft is ensured; on this basis, through setting up the vertical upward setting of output shaft, make whole mechanism adopt the mode of vertical assembly to make up, through setting up a plurality of first locating pins, first locating pin grooves, second locating pin and second locating pin grooves, utilize the mode of pinning, borrow rotor self gravity to dismantle grafting with rotor and actuating head, only need upwards lift up the rotor along vertical direction when changing can make its and actuating head separation, it is simple quick, and, rotor self gravity also can downwardly squeeze actuating head, make actuating head further compress tightly with the output shaft, with the transmission performance between further strengthening actuating head and the output shaft. In summary, the mechanism can solve the problem of complex disassembly when the rotor is replaced on the premise of ensuring stable transmission of the rotor.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a partial cross-sectional view of a mechanism for automatically locking a centrifuge rotor provided in an embodiment of the present utility model;
FIG. 2 is an enlarged view of a drive head of a mechanism for automatically locking a centrifuge rotor provided in an embodiment of the present utility model;
FIG. 3 is an assembly view of a mechanism for automatically locking a centrifuge rotor provided in an embodiment of the present utility model;
fig. 4 is a schematic diagram of a tube centrifuge according to an embodiment of the present utility model.
In the drawings, the reference numerals and corresponding part names:
10-an output shaft; 11-extruding the hole; 20-driving head; 21-an extrusion groove; 23-a first detent pin slot; 24-extruding the annular edge; 241-a first conical surface; 30-extruding; 40-rotor; 41-a second locating pin; 43-slot; 431-second conical surface; 44-tube grooves; 50-bearing.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Examples
Referring to fig. 1 to 3, the present embodiment provides a mechanism capable of automatically locking a centrifuge rotor, which includes a driving motor, wherein the driving motor is vertically provided with an output shaft 10 upwards, and an end of the output shaft 10 is in a conical shape; the second comprises a driving head 20, a conical-like extrusion groove 21 is formed in the bottom of the driving head 20, the driving head 20 is detachably connected with the output shaft 10 through the extrusion groove 21, and a plurality of first positioning pins and/or a plurality of first positioning pin grooves 23 are formed in the top of the driving head 20; the third comprises an extrusion 30, wherein the extrusion 30 is used for performing inclined plane extrusion on the end part of the output shaft 10 and the extrusion groove 21; fourth includes rotor 40, rotor 40 bottom is equipped with a plurality of second locating pins 41 and/or a plurality of second locating pin grooves, second locating pin 41 with first locating pin groove 23 one-to-one, the second locating pin groove with first locating pin 23 one-to-one, second locating pin 41 is used for with corresponding first locating pin groove 23 grafting, the second locating pin groove is used for with corresponding first locating pin grafting.
According to the mechanism capable of automatically locking the centrifuge rotor, the driving head 20 is arranged, the direct connection between the driving motor and the rotor 40 is converted into indirect connection through the driving head 20, the replacement of the rotor 40 is converted into the separation from the driving head 20 from the disassembly of the output shaft 10, the driving head 20 and the output shaft 10 are fully fixed during installation, the driving head 20 is not required to be disassembled, and only the rotor 40 and the driving head 20 are required to be connected and separated, so that the problems of mechanical abrasion of the output shaft 10 and the rotor 40 and influence on transmission performance caused by frequent disassembly are avoided; on the basis, the end part of the output shaft 10 is in a conical shape, the bottom of the driving head 20 is provided with the extrusion groove 21, and the extrusion part 30 is arranged, so that the end part of the output shaft 10 and the extrusion groove 21 can be extruded tightly by utilizing an inclined plane extrusion mode, the driving head 20 and the output shaft 10 are effectively fixed, and the effective transmission of torsion of the output shaft 10 is ensured; on this basis, through setting up the vertical upward setting of output shaft 10, make whole mechanism adopt the mode of vertical assembly to make up, through setting up a plurality of first locating pins, first locating pin groove 23, second locating pin 41 and second locating pin groove, utilize the mode of pinning, borrow rotor 40 self gravity to dismantle grafting with rotor 40 and driving head 20, only need upwards lift rotor 40 along vertical direction can make its and driving head 20 separate during the change, it is simple quick, and, rotor 40 self gravity also can push down driving head 20, make driving head 20 further compress tightly with output shaft 10, with the transmission performance between further strengthening driving head 20 and the output shaft 10.
The arrangement of the first positioning pin, the first positioning pin groove 23, the second positioning pin 41, and the second positioning pin groove may be determined according to practical needs, for example, only the first positioning pin and the second positioning pin groove are provided, for example, only the first positioning pin groove 23 and the second positioning pin 41 are provided, for example, 2 first positioning pins, 2 first positioning pin grooves 23, 2 second positioning pins 41, 2 second positioning pin grooves, and the like are provided, and in this embodiment, only the first positioning pin groove 23 and the second positioning pin 41 are provided.
Preferably, in order to further explain the specific shape and extrusion mode of the extrusion member 30, the end surface of the output shaft 10 is provided with an extrusion hole 11 in the axial direction, the extrusion member 11 is provided with an internal thread, the extrusion member 30 is a bolt, and the extrusion member 30 is inserted into the top surface of the driving head 20 in the vertical direction and screwed with the extrusion hole 11, so that the end portion of the output shaft 10 is inclined-surface extruded with the extrusion groove 21.
By the arrangement, the driving head 20 is extruded to the output shaft 10 from top to bottom along the axial direction of the output shaft 10 by utilizing the characteristic of the vertical arrangement of the device, so that the balance of various forces is effectively ensured, and the mode is superior to the mode of extruding from other directions, such as a mode of extruding downwards from the side wall of the driving head 20 in a hole-opening and hole-opening extrusion mode of inserting the extrusion 30 into the hole, and the mode obviously generates shearing force on the extrusion 30.
Preferably, in order to prevent the output shaft 10 from being subjected to axial forces resulting in friction or seizing and to provide a degree of longitudinal compensation for the threaded connection of the extrusion 30, the output shaft 10 is slidably connected to the drive motor so that the output shaft 10 can slide in the axial direction.
Preferably, in order to prevent the output shaft 10 capable of moving in the axial direction from falling into the output motor, the output shaft 10 is rotatably sleeved with a bearing 50, the diameter of the inner ring of the bearing 50 is slightly larger than the diameter of the output shaft 10, and the diameter of the inner ring of the bearing 50 is smaller than the maximum diameter of the conical end part of the output shaft 10.
Preferably, in order to prevent the bearing 50 from being damaged when the output shaft 10 contacts with the bearing 50, the bottom surface of the tapered end portion of the output shaft 10 is in arc transition.
In order to further stabilize the driving head 20, a squeezing ring edge 24 is disposed at the bottom of the driving head 20, an inner diameter of the squeezing ring edge 24 is matched with an outer diameter of an outer ring of the bearing 50, the squeezing ring edge 24 is used for wrapping the bearing 50, and a bottom end of an inner ring of the bearing 50 is in contact with the driving motor, so that a gap is reserved between the bottom end of an outer ring of the bearing 50 and the driving motor.
By arranging the extrusion rim 24, the extrusion rim 24 and the bearing 50 are sleeved by the coating sleeve, the bearing 50 is used for providing longitudinal support for the driving head 20, so that the driving head 20 is prevented from being contacted with a driving motor and producing extrusion friction, and the extrusion rim 24 is transversely (radially) supported by the outer wall of the bearing 50, so that the driving head 20 is prevented from shaking.
In order to further stabilize the rotor 40, a slot 43 is formed at the bottom of the rotor 40, and the driving head 20 is matched with the slot 43 and is inserted into the slot 43.
Since the driving head 20 is effectively fixed with the bearing 50 and the output shaft 10, the rotor 40 is stably fixed on the driving head 20 in a plugging manner, so that the stability of the rotor 40 is improved.
In order to further improve stability between the extrusion rim 24 and the bearing 50, a first conical surface 241 is provided on the top surface of the outer wall of the extrusion rim 24, a second conical surface 431 is provided on the notch of the slot 43, and the first conical surface 241 and the second conical surface 431 can perform inclined extrusion, so that the extrusion rim 24 hugs the outer ring of the bearing 50.
Through the arrangement, the rotor 40 is pressed down by self gravity, so that the first conical surface 241 presses down to press the second conical surface 431, and the pressing ring edge 24 is compressed downwards and inwards, so that further holding is carried out on the bearing 50, and the stability between the pressing ring edge 24 and the bearing 50 is further improved.
Referring to fig. 4 on the basis of fig. 1 to 3, the present embodiment further provides a tube centrifuge, including any one of the centrifugal mechanisms described above, wherein a plurality of tube slots 44 for inserting test tubes are formed at the top of the rotor 40.
When the rotor 40 of the tube centrifuge needs to be replaced, the rotor 40 is only required to be lifted upwards in the vertical direction.
Preferably, the top surface of the rotor 40 is configured as a concave curved surface, and the axis of each pipe groove 44 is perpendicular to the top surface of the rotor 40.
Through setting up the top surface of rotor 40 and being indent curved surface, further promote the surface area of rotor 40 top surface, conveniently excavate tube groove 44, through setting up the axis of tube groove 44 all perpendicular with the top surface of rotor 40, make tube groove 44 all slope setting, prevent on the one hand that the test tube from shaking along tube groove 44 oral area edge line cuts, on the other hand makes the test tube slope prevent, and the in-process test tube liquid level independently rocks, accelerates the floating and the mixing of in-tube material, optimizes centrifugal effect.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. A mechanism for automatically locking a centrifuge rotor comprising:
the driving motor is vertically upwards provided with an output shaft (10), and the end part of the output shaft (10) is in a conical shape;
the driving head (20) is provided with a conical-like extrusion groove (21) at the bottom of the driving head (20), the driving head (20) is detachably connected with the output shaft (10) through the extrusion groove (21), and a plurality of first positioning pins and/or a plurality of first positioning pin grooves (23) are arranged at the top of the driving head (20);
an extrusion member (30), the extrusion member (30) being configured to perform inclined extrusion of an end portion of the output shaft (10) and the extrusion groove (21);
the rotor (40), rotor (40) bottom is equipped with a plurality of second locating pins (41) and/or a plurality of second locating pin grooves, second locating pin (41) with first locating pin groove (23) one-to-one, second locating pin groove with first locating pin one-to-one, second locating pin (41) are used for with the correspondence first locating pin groove (23) grafting, second locating pin groove is used for with the correspondence first locating pin grafting.
2. The mechanism capable of automatically locking a centrifuge rotor according to claim 1, wherein an extrusion hole (11) is formed in an end surface of the output shaft (10) in an axial direction, the extrusion hole (11) is provided with an internal thread, the extrusion member (30) is a bolt, and the extrusion member (30) is inserted into a top surface of the driving head (20) in a vertical direction and screwed with the extrusion hole (11) so that an end portion of the output shaft (10) is inclined-surface extruded with the extrusion groove (21).
3. A mechanism for automatically locking a centrifuge rotor according to claim 2, wherein the output shaft (10) is slidably connected to the drive motor such that the output shaft (10) is axially slidable.
4. A mechanism for automatically locking a centrifuge rotor according to claim 3, wherein the output shaft (10) is rotatably mounted with a bearing (50), the diameter of the inner ring of the bearing (50) being slightly larger than the diameter of the output shaft (10), the diameter of the inner ring of the bearing (50) being smaller than the maximum diameter of the conical end of the output shaft (10).
5. The mechanism for automatically locking a centrifuge rotor according to claim 4, wherein the bottom surface of the tapered end portion of the output shaft (10) is a circular arc transition.
6. The mechanism capable of automatically locking a centrifuge rotor according to claim 4, wherein a squeezing ring edge (24) is arranged at the bottom of the driving head (20), the inner diameter of the squeezing ring edge (24) is matched with the outer diameter of the outer ring of the bearing (50), the squeezing ring edge (24) is used for coating the bearing (50), and the bottom end of the inner ring of the bearing (50) is in contact with the driving motor, so that a gap is reserved between the bottom end of the outer ring of the bearing (50) and the driving motor.
7. The mechanism for automatically locking a centrifuge rotor according to claim 6, wherein a slot (43) is formed in the bottom of the rotor (40), and the driving head (20) is matched with the slot (43) and is inserted into the slot (43).
8. The mechanism capable of automatically locking a centrifuge rotor according to claim 7, wherein a first conical surface (241) is provided on the top surface of the outer wall of the extrusion ring rim (24), a second conical surface (431) is provided on the notch of the slot (43), and the first conical surface (241) can be obliquely extruded with the second conical surface (431) so that the extrusion ring rim (24) can hug the outer ring of the bearing (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038159.3U CN219943226U (en) | 2023-04-28 | 2023-04-28 | Mechanism capable of automatically locking centrifuge rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038159.3U CN219943226U (en) | 2023-04-28 | 2023-04-28 | Mechanism capable of automatically locking centrifuge rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219943226U true CN219943226U (en) | 2023-11-03 |
Family
ID=88547200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321038159.3U Active CN219943226U (en) | 2023-04-28 | 2023-04-28 | Mechanism capable of automatically locking centrifuge rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219943226U (en) |
-
2023
- 2023-04-28 CN CN202321038159.3U patent/CN219943226U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101745799B (en) | Pressing and mounting device for pressing and mounting thin-wall sleeve | |
| CN219943226U (en) | Mechanism capable of automatically locking centrifuge rotor | |
| CN201579584U (en) | Pressing device for pressing thin-wall sleeves | |
| CN85109665A (en) | Mold thickness adjustment device in the clamping | |
| CN209380362U (en) | A kind of inclined wedge traveller centering machine | |
| US20210285499A1 (en) | Bushing insertion systems and methods | |
| CN202100618U (en) | Locking connecting flange | |
| CN210255140U (en) | Positioning element of hydraulic structure | |
| US20230142403A1 (en) | Systems And Methods For Inserting And Removing Bushing Assemblies | |
| CN217317085U (en) | Positioning device | |
| CN207387172U (en) | A kind of centrifugal cutter binder | |
| CN211772141U (en) | Low-loss multi-support high-strength washing machine brake wheel | |
| US20220063071A1 (en) | Systems and methods for inserting and removing bushing assemblies | |
| CN213673910U (en) | Roller bearing puller | |
| CN208252621U (en) | A kind of coupling arrangement of the quick-detachable axis of cone and tapered sleeve | |
| CN221361939U (en) | Top compression fittings for seamless steel pipe of combination formula | |
| CN110639653A (en) | Grinding roller shaft and belt pulley connection structure of fine konjaku flour machine | |
| CN216296694U (en) | Rotary drum mechanism convenient to dismantle | |
| CN221638322U (en) | Bearing mounting structure for stirring shaft of grinder | |
| CN211135117U (en) | Long-distance heavy tail jack | |
| CN221734709U (en) | Steel cable bearing head manufacturing device | |
| CN219074827U (en) | Hub bearing frock of colding pressing | |
| CN2641126Y (en) | Multi-point and equilibrium pressure type pile grasping mechanism of pile-pressing machine | |
| CN219802113U (en) | Stator clamping jig | |
| CN220278490U (en) | Quick-change universal end face tooth broaching machine clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |