CN117375326A - Overload self-power-off type driving motor - Google Patents
Overload self-power-off type driving motor Download PDFInfo
- Publication number
- CN117375326A CN117375326A CN202311641796.4A CN202311641796A CN117375326A CN 117375326 A CN117375326 A CN 117375326A CN 202311641796 A CN202311641796 A CN 202311641796A CN 117375326 A CN117375326 A CN 117375326A
- Authority
- CN
- China
- Prior art keywords
- hydraulic tank
- hydraulic
- frame
- motor main
- elastic
- 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.)
- Granted
Links
- 238000001125 extrusion Methods 0.000 claims abstract description 52
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000003028 elevating effect Effects 0.000 claims abstract description 12
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 8
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 17
- 239000010720 hydraulic oil Substances 0.000 description 9
- 230000005611 electricity Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0856—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load characterised by the protection measure taken
Abstract
The invention relates to the technical field of motors, in particular to an overload self-powered off type driving motor, which comprises a motor main body and further comprises: the load transmission structure is connected with the motor main body and comprises a support shell, a hydraulic transmission mechanism is arranged in the support shell, a first bearing is arranged in the support shell, the first bearing is connected with a rotary extrusion mechanism, and the rotary extrusion mechanism is fixedly connected with a central shaft; install the outage insurance on motor main part, the outage insurance includes the hydraulic tank, installs the elevating platform in the hydraulic tank, installs first spring between hydraulic tank and elevating platform, and fixed mounting has the elastic reed on the elevating platform, and elastic reed swing joint has the elastic conductive mechanism, and fixed mounting has the insulator spindle on the elastic reed, install extrusion mechanism on the hydraulic tank. When the load exceeds a safety value, the electric connection between the elastic reed and the elastic conductive mechanism is actively disconnected, so that the invention is prevented from being burnt due to overlarge load.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an overload self-power-off driving motor.
Background
The motor refers to an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction. Drive motors are commonly used to drive a variety of devices. The power of the fan blade of the fan often comes from the motor, in daily life, the situation that personnel or objects block the fan blade often occurs, the load borne by the output shaft of the motor is overlarge at the moment, the motor continuously generates heat energy, and overload burning of the motor easily occurs at the moment.
Disclosure of Invention
The invention aims to provide an overload self-power-off type driving motor so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an overload self-powered off type driving motor, comprising a motor main body, and further comprising:
the load transmission structure is connected with the motor main body and comprises a support shell movably connected with the motor main body, a hydraulic transmission mechanism is arranged in the support shell, a first bearing is arranged in the support shell, the inner ring of the first bearing is connected with a rotary extrusion mechanism, the rotary extrusion mechanism is connected with the hydraulic transmission mechanism, the rotary extrusion mechanism is fixedly connected with a central shaft, and the rotary extrusion mechanism is connected with an output shaft of the motor main body;
install the outage insurance in motor main part, the outage insurance includes the hydraulic tank with motor main part fixed connection, the hydraulic tank is connected with hydraulic drive mechanism, slidable mounting has the elevating platform in the hydraulic tank, install first spring between hydraulic tank and elevating platform, fixed mounting has the elastic reed on the elevating platform, elastic reed swing joint has the elastic conductive mechanism of installing in the hydraulic tank, fixed mounting has the insulator spindle on the elastic reed, install the extrusion mechanism with insulator spindle looks adaptation on the hydraulic tank.
As a further improvement of the invention: the rotary extrusion mechanism comprises a rotating frame fixedly connected with an output shaft of the motor main body, a plurality of groups of first inclined planes are arranged on the rotating frame, the inner ring of the first bearing is movably connected with a groove frame which is fixedly connected with a central shaft, the groove frame is connected with the hydraulic transmission mechanism, a plurality of groups of arc grooves are formed in the groove frame, arc strips are connected with the arc grooves in a sliding mode, a second spring is arranged between the arc strips and the groove frame, the arc strips are fixedly connected with an extrusion head movably connected with the rotating frame, and a second inclined plane matched with the first inclined plane is formed in the extrusion head.
As a further improvement of the invention: the hydraulic transmission mechanism comprises an oil groove arranged in a supporting shell, a hose communicated with the oil groove is fixedly arranged on the supporting shell, the hose is fixedly connected with a hydraulic box, an extrusion ring is slidably connected with the oil groove, and a thrust bearing is arranged between the extrusion ring and the groove frame.
As a further improvement of the invention: the elastic conductive mechanism comprises a driven telescopic frame fixedly arranged in the hydraulic box, a third spring is arranged in the driven telescopic frame, a first triangular block is fixedly arranged at the moving end of the driven telescopic frame, and an electric shock block movably connected with the elastic reed is fixedly arranged on the first triangular block.
As a further improvement of the invention: and the elastic reed is fixedly provided with a second triangular block for extruding the first triangular block.
As a further improvement of the invention: the extrusion mechanism comprises a clamping frame fixedly connected with the hydraulic tank, a damping fin is fixedly installed on the clamping frame, the hydraulic tank is rotationally connected with a linkage handle, an extension piece movably connected with the damping fin is fixedly installed on the linkage handle, a V-shaped block in sliding connection with the inner wall of the hydraulic tank is rotationally connected with the linkage handle, and the V-shaped block is matched with the insulation rod.
As a further improvement of the invention: an oil drain bolt is arranged on the supporting shell in a threaded mode, and one end of the oil drain bolt is arranged in the oil groove.
Compared with the prior art, the invention has the beneficial effects that:
the motor main body drives the central shaft to rotate through a mode of driving the rotary extrusion mechanism to rotate, along with the rising of the load on the central shaft, the motor main body continuously applies torque to the rotary extrusion mechanism, at the moment, the rotary extrusion mechanism presses the hydraulic transmission mechanism, hydraulic oil in the hydraulic transmission mechanism is pressed into the hydraulic tank, then the hydraulic oil pushes the lifting platform, the lifting platform drives the elastic reed to move towards the extrusion mechanism, the elastic reed continuously contacts with the elastic conductive mechanism and conducts electricity during the period, when the load on the central shaft exceeds a safety value, the insulating rod moves along with the elastic reed and extrudes with the extrusion mechanism, the insulating rod drives the elastic reed to deform, so that the elastic reed slides off the elastic conductive mechanism, at the moment, the motor main body cannot form a passage with an external power supply through the elastic reed, and at the moment, the motor main body is in a power-off state. When the load exceeds a safety value, the hydraulic transmission mechanism is pressed by the rotary pressing mechanism, so that the hydraulic oil in the hydraulic tank pushes the lifting table, the insulating rod and the pressing mechanism are mutually pressed, the electric connection between the elastic reed and the elastic conductive mechanism is disconnected, and the burnout of the hydraulic transmission mechanism due to the overlarge load is avoided.
Drawings
FIG. 1 is a schematic view of a cut-away structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a cut-away perspective structure of an embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of a portion of the invention at A in FIG. 1;
FIG. 5 is an enlarged schematic view of a portion of the invention at B in FIG. 3;
FIG. 6 is a schematic perspective view of a turret, a cradle, an arcuate slot, an arcuate strip, and an extrusion head in accordance with an embodiment of the present invention;
FIG. 7 is a schematic diagram of a structure of a trough frame and extrusion head according to an embodiment of the present invention.
In the figure: 1. a motor main body; 2. a load transmission structure; 3. a support case; 4. a hydraulic transmission mechanism; 5. rotating the extrusion mechanism; 6. a central shaft; 7. power-off insurance; 8. a hydraulic tank; 9. a lifting table; 10. an elastic reed; 11. an elastic conductive mechanism; 12. an insulating rod; 13. a rotating frame; 14. a trough rack; 15. an arc-shaped groove; 16. an arc-shaped strip; 17. an extrusion head; 18. an oil groove; 19. a hose; 20. a pressing ring; 21. a driven telescopic frame; 22. a first bearing; 23. a first triangular block; 24. an electric shock block; 25. a second triangular block; 26. an extrusion mechanism; 27. an oil drain bolt; 28. a thrust bearing; 29. a clamping frame; 30. a damping sheet; 31. a linkage handle; 32. a V-shaped block; 33. an extension piece.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the specific embodiments.
In an embodiment, referring to fig. 1 to 7, an overload self-powered off driving motor includes a motor main body 1, where the motor main body 1 may be a brush motor or a brushless motor, and further includes:
the load transmission structure 2 is connected with the motor main body 1, the load transmission structure 2 comprises a support shell 3 movably connected with the motor main body 1, a hydraulic transmission mechanism 4 is arranged in the support shell 3, a first bearing 22 is arranged in the support shell 3, the inner ring of the first bearing 22 is connected with a rotary extrusion mechanism 5, the rotary extrusion mechanism 5 is connected with the hydraulic transmission mechanism 4, the rotary extrusion mechanism 5 is fixedly connected with a central shaft 6, the rotary extrusion mechanism 5 is connected with an output shaft of the motor main body 1, and the rotary extrusion mechanism 5 provides pressure for the hydraulic transmission mechanism 4 while transmitting power of the motor main body 1;
install outage insurance 7 on motor main part 1, outage insurance 7 includes hydraulic pressure case 8 with motor main part 1 fixed connection, hydraulic pressure case 8 is connected with hydraulic drive mechanism 4, slidable mounting has elevating platform 9 in hydraulic pressure case 8, install first spring between hydraulic pressure case 8 and elevating platform 9, fixed mounting has elastic reed 10 on elevating platform 9, elastic reed 10 has electric conductivity, elastic reed 10 links to each other with motor main part 1 electricity, elastic reed 10 swing joint has elastic conductive mechanism 11 of installing in hydraulic pressure case 8, elastic conductive mechanism 11 links to each other with external power source electricity, fixed mounting has insulator spindle 12 on elastic reed 10, install the extrusion mechanism 26 with insulator spindle 12 looks adaptation on hydraulic pressure case 8.
The motor main body 1 drives the central shaft 6 to rotate by driving the rotary extrusion mechanism 5 to rotate, along with the rising of the load on the central shaft 6, the motor main body 1 continuously applies torque to the rotary extrusion mechanism 5, at the moment, the rotary extrusion mechanism 5 presses the hydraulic transmission mechanism 4, hydraulic oil in the hydraulic transmission mechanism 4 is pressed into the hydraulic tank 8, then the hydraulic oil pushes the lifting platform 9, the lifting platform 9 drives the elastic reed 10 to move towards the extrusion mechanism 26, the elastic reed 10 continuously contacts with the elastic conductive mechanism 11 and conducts electricity during the period, when the load on the central shaft 6 exceeds a safety value, the insulating rod 12 moves along with the elastic reed 10 and extrudes with the extrusion mechanism 26 mutually, the insulating rod 12 drives the elastic reed 10 to deform, so that the elastic reed 10 elastically slips off the conductive mechanism 11, at the moment, the motor main body 1 cannot form a passage with an external power supply through the elastic reed 10, and the motor main body 1 is in a power-off state at the moment. When the load exceeds a safety value, the hydraulic transmission mechanism 4 is pressed by the rotary pressing mechanism 5, so that the hydraulic oil in the hydraulic tank 8 pushes the lifting table 9, the insulating rod 12 and the pressing mechanism 26 are mutually pressed, the electric connection between the elastic reed 10 and the elastic conductive mechanism 11 is disconnected, and the burnout caused by the overlarge load is avoided.
In one case of this embodiment, the rotary extrusion mechanism 5 includes a rotating frame 13 fixedly connected with an output shaft of the motor main body 1, a plurality of groups of first inclined planes are provided on the rotating frame 13, an inner ring of the first bearing 22 is movably connected with a groove frame 14, the groove frame 14 is fixedly connected with the central shaft 6, the groove frame 14 is connected with the hydraulic transmission mechanism 4, a plurality of groups of arc grooves 15 are provided on the groove frame 14, the arc grooves 15 are slidably connected with arc strips 16, a second spring is installed between the arc strips 16 and the groove frame 14, an extrusion head 17 movably connected with the rotating frame 13 is fixedly connected with the arc strips 16, and a second inclined plane adapted to the first inclined plane is provided on the extrusion head 17. The output shaft of the motor main body 1 drives the rotating frame 13 to rotate, the first inclined plane of the rotating frame 13 applies pressure to the second inclined plane of the extrusion head 17, the extrusion head 17 drives the arc-shaped strip 16, the arc-shaped strip 16 drives the groove frame 14 through the second spring, the groove frame 14 drives the central shaft 6 to rotate, when the load borne by the central shaft 6 is increased, the motor main body 1 increases torque for keeping the output rotating speed, the rotating frame 13 presses the extrusion head 17, the extrusion head 17 drives the groove frame 14 to move through the arc-shaped strip 16, at the moment, the second spring is pressed to compress, the groove frame 14 and the inner ring of the first bearing 22 slide relatively, and the moving groove frame 14 presses the hydraulic transmission mechanism 4, so that the hydraulic transmission mechanism 4 is driven to carry out hydraulic oil conveying operation.
In one case of this embodiment, the hydraulic transmission mechanism 4 includes an oil groove 18 formed in the support casing 3, a hose 19 connected to the oil groove 18 is fixedly installed on the support casing 3, the hose 19 is fixedly connected to the hydraulic tank 8, the oil groove 18 is slidably connected to a pressing ring 20, and a thrust bearing 28 is installed between the pressing ring 20 and the tank frame 14. The groove frame 14 presses the pressing ring 20 through the thrust bearing 28, and the pressing ring 20 pushes hydraulic oil in the oil groove 18, so that the hydraulic oil enters the hydraulic tank 8 through the hose 19, and the hydraulic tank 8 is pressurized.
In one case of this embodiment, the elastic conductive mechanism 11 includes a driven telescopic frame 21 fixedly installed in the hydraulic tank 8, a third spring is installed in the driven telescopic frame 21, a first triangular block 23 is fixedly installed at the moving end of the driven telescopic frame 21, the first triangular block 23 has insulation, and an electric shock block 24 movably connected with the elastic reed 10 is fixedly installed on the first triangular block 23. The electric shock block 24 is used to externally connect an external power source, so that the motor body 1 forms a path with the external power source when the electric shock block 24 contacts the elastic reed 10.
In one case of the present embodiment, the elastic spring 10 is fixedly provided with a second triangular block 25 for pressing the first triangular block 23, and the second triangular block 25 has insulation. In the process of resetting the lifting platform 9, the elastic reed 10 pulls the second triangular block 25, and the second triangular block 25 and the first triangular block 23 are mutually extruded, so that the second triangular block 25 presses the elastic reed 10, and the elastic reed 10 is convenient to reset through a gap between the first triangular blocks 23.
In one case of this embodiment, the pressing mechanism 26 includes a clamping frame 29 fixedly connected with the hydraulic tank 8, a damping fin 30 is fixedly installed on the clamping frame 29, the hydraulic tank 8 is rotationally connected with a linkage handle 31, an extension piece 33 movably connected with the damping fin 30 is fixedly installed on the linkage handle 31, the linkage handle 31 is rotationally connected with a V-shaped block 32 slidably connected with an inner wall of the hydraulic tank 8, and the V-shaped block 32 is adapted to the insulating rod 12. The V-shaped surface of the V-shaped block 32 presses the insulating rod 12 to enable the elastic reed 10 to deform the insulating rod 12, so that the elastic reed 10 slides off the electric shock block 24, the linkage handle 31 is rotated to enable the extension piece 33 to slide off the damping piece 30, the linkage handle 31 is pressed at the moment, the V-shaped block 32 continuously presses the insulating rod 12 to descend, the lifting platform 9 is assisted to reset, and as the V-shaped block 32 is separated from the insulating rod 12, the elastic reed 10 is restored to be in shape, and the elastic reed 10 is contacted with the electric shock block 24 again.
In the second embodiment, referring to fig. 1 and 3, an oil drain bolt 27 is screwed on the support shell 3, and one end of the oil drain bolt 27 is disposed in the oil groove 18. The drain bolts 27 are removed to facilitate draining of oil from the oil sump 18.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides an overload self-powered off driving motor, includes the motor main part, its characterized in that still includes:
the load transmission structure is connected with the motor main body and comprises a support shell movably connected with the motor main body, a hydraulic transmission mechanism is arranged in the support shell, a first bearing is arranged in the support shell, the inner ring of the first bearing is connected with a rotary extrusion mechanism, the rotary extrusion mechanism is connected with the hydraulic transmission mechanism, the rotary extrusion mechanism is fixedly connected with a central shaft, and the rotary extrusion mechanism is connected with an output shaft of the motor main body;
install the outage insurance in motor main part, the outage insurance includes the hydraulic tank with motor main part fixed connection, the hydraulic tank is connected with hydraulic drive mechanism, slidable mounting has the elevating platform in the hydraulic tank, install first spring between hydraulic tank and elevating platform, fixed mounting has the elastic reed on the elevating platform, elastic reed swing joint has the elastic conductive mechanism of installing in the hydraulic tank, fixed mounting has the insulator spindle on the elastic reed, install the extrusion mechanism with insulator spindle looks adaptation on the hydraulic tank.
2. The overload self-powered off type driving motor as claimed in claim 1, wherein the rotary extrusion mechanism comprises a rotating frame fixedly connected with an output shaft of the motor main body, a plurality of groups of first inclined planes are arranged on the rotating frame, the inner ring of the first bearing is movably connected with a groove frame fixedly connected with a central shaft, the groove frame is connected with the hydraulic transmission mechanism, a plurality of groups of arc grooves are formed in the groove frame, arc strips are slidably connected with the arc grooves, a second spring is arranged between the arc strips and the groove frame, the arc strips are fixedly connected with an extrusion head movably connected with the rotating frame, and a second inclined plane matched with the first inclined plane is formed in the extrusion head.
3. The overload self-powered off type driving motor as claimed in claim 2, wherein the hydraulic transmission mechanism comprises an oil groove formed in a supporting shell, a hose communicated with the oil groove is fixedly installed on the supporting shell, the hose is fixedly connected with the hydraulic tank, the oil groove is slidably connected with an extrusion ring, and a thrust bearing is installed between the extrusion ring and the groove frame.
4. The overload self-powered off type driving motor as claimed in claim 3, wherein the elastic conductive mechanism comprises a driven telescopic frame fixedly installed in the hydraulic tank, a third spring is installed in the driven telescopic frame, a first triangular block is fixedly installed at the moving end of the driven telescopic frame, and an electric shock block movably connected with the elastic reed is fixedly installed on the first triangular block.
5. The overload self-powered off type driving motor as claimed in claim 4, wherein the elastic reed is fixedly provided with a second triangular block for pressing the first triangular block.
6. The overload self-powered off type driving motor as claimed in claim 1, wherein the extruding mechanism comprises a clamping frame fixedly connected with the hydraulic tank, a damping fin is fixedly installed on the clamping frame, the hydraulic tank is rotationally connected with a linkage handle, an extension piece movably connected with the damping fin is fixedly installed on the linkage handle, a V-shaped block in sliding connection with the inner wall of the hydraulic tank is rotationally connected with the linkage handle, and the V-shaped block is matched with the insulating rod.
7. The overload self-powered off type driving motor as claimed in claim 3, wherein the support housing is provided with a drain bolt in a threaded manner, and one end of the drain bolt is disposed in the oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311641796.4A CN117375326B (en) | 2023-12-04 | 2023-12-04 | Overload self-power-off type driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311641796.4A CN117375326B (en) | 2023-12-04 | 2023-12-04 | Overload self-power-off type driving motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117375326A true CN117375326A (en) | 2024-01-09 |
| CN117375326B CN117375326B (en) | 2024-02-09 |
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ID=89398751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311641796.4A Active CN117375326B (en) | 2023-12-04 | 2023-12-04 | Overload self-power-off type driving motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117375326B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121078A (en) * | 2003-10-15 | 2005-05-12 | Sankyo Seiki Mfg Co Ltd | Conical dynamic bearing device, its manufacturing method and disc driving device |
| JP2006214431A (en) * | 2005-02-05 | 2006-08-17 | Samsung Electronics Co Ltd | Rotary compressor |
| KR20120119472A (en) * | 2011-04-21 | 2012-10-31 | 주식회사 자동기 | System for protecting overload of snow removing device |
| CN102801254A (en) * | 2012-09-07 | 2012-11-28 | 东莞市神煜机械有限公司 | Energy-saving motor for hydraulic pump drive |
| CN111720375A (en) * | 2020-07-30 | 2020-09-29 | 宁波埃科思注塑科技有限公司 | Precision closed oil-way oil-electricity composite injection molding machine |
| CN212572434U (en) * | 2020-08-18 | 2021-02-19 | 襄阳诺华机电技术有限公司 | High-voltage electro-hydraulic rheostatic starter capable of overload protection |
-
2023
- 2023-12-04 CN CN202311641796.4A patent/CN117375326B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121078A (en) * | 2003-10-15 | 2005-05-12 | Sankyo Seiki Mfg Co Ltd | Conical dynamic bearing device, its manufacturing method and disc driving device |
| JP2006214431A (en) * | 2005-02-05 | 2006-08-17 | Samsung Electronics Co Ltd | Rotary compressor |
| KR20120119472A (en) * | 2011-04-21 | 2012-10-31 | 주식회사 자동기 | System for protecting overload of snow removing device |
| CN102801254A (en) * | 2012-09-07 | 2012-11-28 | 东莞市神煜机械有限公司 | Energy-saving motor for hydraulic pump drive |
| CN111720375A (en) * | 2020-07-30 | 2020-09-29 | 宁波埃科思注塑科技有限公司 | Precision closed oil-way oil-electricity composite injection molding machine |
| CN212572434U (en) * | 2020-08-18 | 2021-02-19 | 襄阳诺华机电技术有限公司 | High-voltage electro-hydraulic rheostatic starter capable of overload protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117375326B (en) | 2024-02-09 |
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