CN114006501B - Motor rotating shaft rotating speed control system with safety alarm - Google Patents
Motor rotating shaft rotating speed control system with safety alarm Download PDFInfo
- Publication number
- CN114006501B CN114006501B CN202111303479.2A CN202111303479A CN114006501B CN 114006501 B CN114006501 B CN 114006501B CN 202111303479 A CN202111303479 A CN 202111303479A CN 114006501 B CN114006501 B CN 114006501B
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- alarm
- safety alarm
- motor
- shaft
- rheostat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- 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
- H02H7/20—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 electronic equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of control of the rotating speed of a motor rotating shaft, in particular to a motor rotating shaft rotating speed control system with a safety alarm, which comprises a rotating shaft, wherein the rotating shaft is rotatably connected with a motor, a fixed gear which is meshed with a reduction gearbox is fixedly sleeved on the rotating shaft, the fixed gear is meshed with a reduction gear in the reduction gearbox, the reduction gear is connected with a rotating generator through a transmission shaft, the output end of the rotating generator is electrically connected with a sliding rheostat and an equivalent resistor, the equivalent resistor is connected with the alarm in parallel, and the safety alarm has the advantages that: the linkage is realized through the meshing of gear, and then makes the generator electricity generation of rotating, and the rotational speed after the transmission is reflected through the electric current size of electricity generation, through setting up the slide rheostat, through the resistance that changes the slide rheostat, realizes injecing the electric current in the circuit to make the siren adaptation in the warning of different rotational speeds.
Description
Technical Field
The invention relates to the technical field of control of the rotating speed of a motor rotating shaft, in particular to a motor rotating shaft rotating speed control system with a safety alarm.
Background
The motor converts electric energy into rotation kinetic energy of the rotating shaft through built-in energy conversion, and in order to control rotation stability, the rotating speed of the rotating shaft needs to be monitored in real time.
The existing motor rotating speed is mostly detected through the rotating speed of the rotating shaft, and then alarm warning is given, but because of the difference between processing requirements and accuracy requirements, different requirements are provided for the peak values of different equipment rotating speeds, the existing alarm can only alarm at a single rotating speed, adaptation can not be adjusted according to the rotating speed, meanwhile, the existing alarm can detect the rotating speed through an intelligent rotating speed detection device, so that the detection cost is increased, and meanwhile, the time delay performance is realized, and the judgment can not be made in time.
Therefore, the motor rotating shaft rotating speed control system with the safety alarm is provided to solve the problem of adaptation and accuracy of the alarm.
Disclosure of Invention
The present invention is directed to a system for controlling the rotational speed of a rotating shaft of a motor with a safety alarm, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a motor shaft rotational speed control system with safety alarm, includes the pivot, the pivot is rotated and is connected the motor, fixed cup joint has the fixed gear who is connected with the reducing gear box meshing in the pivot, fixed gear meshes with the reduction gear in the reducing gear box, reduction gear passes through the transmission shaft and connects the rotation generator, the output electric connection who rotates the generator has slip rheostat and equivalent resistance, the equivalent resistance is last to have the siren in parallel, be provided with the slider that the telescopic link control goes up and down on the slip rheostat, the equivalent resistance is connected to the one end series connection of slider, and the other end of slider is provided with the plectrum of slip laminating slip rheostat outer wall spiral resistance.
Preferably, the rotating shaft and the motor are arranged on the protective sleeve, the protective sleeve is provided with a positioning insert ring, the inner cavity of the reduction gearbox is arranged to be a transmission inner cavity, one side, close to the protective sleeve, of the transmission inner cavity is provided with an opening, and the outer side of the opening is provided with the positioning sleeve inserted on the positioning insert ring.
Preferably, the reduction gear is arranged in the transmission inner cavity, the reduction gear is fixedly sleeved on the transmission shaft, one end of the transmission shaft is rotatably arranged on the side wall of the reduction gearbox through a bearing, and the other end of the transmission shaft extends to the outer side of the reduction gearbox.
Preferably, connecting pipes are arranged between the reduction gearbox and the rotary generator, the adjacent connecting pipes are mounted through symmetrically distributed flange plates, the flange plates are fastened through bolts distributed in a circumferential array, a conversion block and an input shaft are distributed in the adjacent connecting pipes, and the input shaft is connected with the rotary generator.
Preferably, the transmission shaft and the input shaft are symmetrically provided with side strips near the arc outer walls of the ends of the conversion block, the two sides of the conversion block are respectively provided with an insertion hole, the insertion holes are provided with a limit groove, the transmission shaft and the input shaft are respectively inserted into the insertion holes, and the side strips are inserted into the limit grooves.
Preferably, the rotary generator, the sliding rheostat and the equivalent resistor form a loop, the sliding rheostat is I-shaped, a cooling pipe is arranged in the middle of the sliding rheostat, top plates are arranged at two ends of the sliding rheostat, the spiral resistor is sleeved on the cooling pipe, and the resistance value of the spiral resistor is larger than that of the equivalent resistor.
Preferably, the sliding rheostat is connected with an equivalent resistor through a connecting rod, the resistance value of the equivalent resistor is the same as that of the alarm, the alarm is fixedly installed on the rotating generator, and the alarm is connected in parallel into the loop.
Preferably, the slide rheostat is provided with a cooling device, the cooling device is composed of a cooling pipe and a top plate, a pair of top plates which are symmetrical up and down are provided with external interfaces, the external interfaces are externally connected with a water tank, and the inner sides of the external interfaces are communicated with the cooling pipe through a flow channel.
Preferably, a loop bar is arranged between a pair of top plates which are adjacent up and down, the telescopic rod is fixed on the top plates, a sliding block sleeved on the loop bar is arranged at the end part of the telescopic rod, and a splayed shifting piece attached to the spiral resistor is arranged on the sliding block.
Compared with the prior art, the invention has the beneficial effects that:
1. the linkage is realized through the meshing of the gears, so that the generator is rotated to generate electricity, the rotating speed after transmission is reflected through the magnitude of the generated current, and the current in the circuit is limited by arranging the slide rheostat and changing the resistance value of the slide rheostat, so that the alarm is adaptive to the warning of different rotating speeds;
2. the invention realizes energy conversion by arranging the rotary generator, reflects the change of the rotating speed in real time by the change of the current in the circuit, and the alarm gives an alarm in time when the current reaches a specified value, thereby greatly reducing the time delay.
Drawings
FIG. 1 is a schematic view of the transmission mounting structure of the reducer of the present invention;
FIG. 2 is a schematic view of the alarm mounting structure of the present invention;
FIG. 3 is a schematic view of a sliding varistor in accordance with the present invention;
fig. 4 is a schematic perspective view of the slide rheostat of the present invention;
FIG. 5 is a schematic perspective view of a conversion block according to the present invention;
fig. 6 is a schematic perspective view of the connection of the device in the alarm circuit according to the present invention.
In the figure: 1. a motor; 2. a rotating shaft; 3. a protective sleeve; 4. fixing a gear; 5. positioning the insert ring; 6. a reduction gearbox; 7. a transmission inner cavity; 8. a positioning sleeve; 9. a drive shaft; 10. a reduction gear; 11. a bearing; 12. a conversion block; 13. a flange plate; 14. an input shaft; 15. rotating the generator; 16. an alarm; 17. equivalent resistance; 18. a slide rheostat; 19. a cooling tube; 20. a connecting rod; 21. a telescopic rod; 22. a slider; 23. a loop bar; 24. a spiral resistor; 25. a top plate; 26. an external interface; 27. a flow channel; 28. a shifting sheet; 29. side strips; 30. connecting pipes; 31. a jack; 32. a limiting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution:
the utility model provides a motor shaft rotational speed control system with safety alarm, including pivot 2, pivot 2 rotates and connects motor 1, fixed gear 4 of being connected with the meshing of reducing gear box 6 is cup jointed to the fixed being connected in the pivot 2, pivot 2 and motor 1 are installed on lag 3, be provided with location insert ring 5 on the lag 3, the inner chamber of reducing gear box 6 sets up to transmission inner chamber 7, one side that transmission inner chamber 7 is close to lag 3 is provided with the opening, and the open-ended outside is provided with the position sleeve 8 of pegging graft on location insert ring 5, utilize the cooperation of location insert ring 5 and position sleeve 8, realize the accurate position installation of reducing gear box 6 on lag 3.
The fixed gear 4 is meshed with a reduction gear 10 in the reduction gearbox 6, and the transmission of kinetic energy is realized through the meshing between the gears.
The speed reduction gear 10 is connected with a rotary generator 15 through a transmission shaft 9, the speed reduction gear 10 is installed in a transmission inner cavity 7, the speed reduction gear 10 is fixedly sleeved on the transmission shaft 9, one end of the transmission shaft 9 is rotatably installed on the side wall of the reduction gearbox 6 through a bearing 11, the other end of the transmission shaft 9 extends to the outer side of the reduction gearbox 6, connecting pipes 30 are arranged between the reduction gearbox 6 and the rotary generator 15, adjacent connecting pipes 30 are installed through symmetrically distributed flange plates 13, the flange plates 13 are fastened through bolts distributed in a circumferential array, a conversion block 12 and an input shaft 14 are arranged in the adjacent connecting pipes 30, side strips 29 are symmetrically arranged on the circular arc outer walls of one ends, close to the conversion block 12, of the transmission shaft 9 and the input shaft 14, insertion holes 31 are formed in two sides of the conversion block 12, limiting grooves 32 are formed in the insertion holes 31, the transmission shaft 9 and the input shaft 14 are respectively inserted into the insertion holes 31, the side strips 29 are inserted into the limiting grooves 32, and the conversion block 12 with the transmission shaft 9 and the input shaft 14 are arranged to achieve convenient installation and disassembly of the device and provide stable transmission connection.
The input shaft 14 is connected with a rotary generator 15, the output end of the rotary generator 15 is electrically connected with a sliding rheostat 18 and an equivalent resistor 17, the equivalent resistor 17 is connected with an alarm 16 in parallel, the rotary generator 15, the sliding rheostat 18 and the equivalent resistor 17 form a loop, the sliding rheostat 18 is arranged in an I shape, a cooling pipe 19 is arranged in the middle of the sliding rheostat 18, top plates 25 are arranged at two ends of the sliding rheostat 18, a spiral resistor 24 is sleeved on the cooling pipe 19, the resistance value of the spiral resistor 24 is larger than that of the equivalent resistor 17, kinetic energy is converted into electric energy through the rotary generator 15, the rotating speed of the rotating shaft 2 is further reflected through current in a circuit, when the rotating shaft 2 rotates at a specified rotating speed, current generated by the rotary generator 15 acts on the sliding rheostat 18, and the resistance value of the sliding rheostat 18 is far larger than that of the equivalent resistor 17, so that the current in the circuit is not enough to reach the power of the alarm 16, and the alarm 16 is in a closed state.
The slide rheostat 18 is provided with a cooling device, the cooling device is composed of a cooling pipe 19 and a top plate 25, a pair of top plates 25 which are symmetrical up and down are provided with external interfaces 26, the external interfaces 26 are externally connected with a water tank, the inner sides of the external interfaces 26 are communicated with the cooling pipe 19 through a flow passage 27, in a normal state, as the resistance value of the slide rheostat 18 is large, the voltage shared under series connection is large, the slide rheostat 18 generates heat, cooling water is externally connected with the external interfaces 26 through the cooling pipe 19, the purpose of cooling and radiating the slide rheostat 18 is achieved, meanwhile, energy recovery is achieved, and the utilization efficiency of resources is improved.
One end of the sliding block 22 is connected with an equivalent resistor 17 in series, the sliding rheostat 18 is connected with the equivalent resistor 17 through a connecting rod 20, the resistance value of the equivalent resistor 17 is the same as that of the alarm 16, the alarm 16 is fixedly installed on the rotating generator 15, the alarm 16 is connected into a loop in parallel, the alarm 16 is protected by arranging the equivalent resistor 17, and when the rotating speed of the rotating shaft 2 is overloaded, the equivalent resistor 17 connected in parallel achieves the purpose of shunting the alarm 16.
The slide rheostat 18 is provided with a slide block 22 of which the lifting is controlled by a telescopic rod 21, the other end of the slide block 22 is provided with a shifting piece 28 which is in slide fit with a spiral resistor 24 on the outer wall of the slide rheostat 18, a loop bar 23 is arranged between a pair of top plates 25 which are adjacent up and down, the telescopic rod 21 is fixed on the top plates 25, the end part of the telescopic rod 21 is provided with the slide block 22 which is sleeved on the loop bar 23, the slide block 22 is provided with a splayed shifting piece 28 which is in fit with the spiral resistor 24, when the alarm value of the rotating speed needs to be adjusted and adapted, the slide block 22 and the shifting piece 28 are driven by the telescopic rod 21 to slide on the spiral resistor 24, so that the resistance value is adjusted, and the current in the current is limited.
The working principle is as follows: the cooperation of utilizing location insert ring 5 and position sleeve 8 at first, realize the accurate position installation of reducing gear box 6 on lag 3, through the meshing between the gear, realize the transmission of kinetic energy, through setting up the connection that has conversion block 12 and transmission shaft 9, input shaft 14 of spacing groove 32, and then realize the convenient installation and the dismantlement of device, provide stable transmission connection simultaneously, through rotating generator 15 with kinetic energy for the electric energy, and then through the rotational speed of the electric current reaction pivot 2 in the circuit.
Example 1: when the rotating shaft 2 rotates at a specified rotating speed, the current generated by the rotating generator 15 acts on the slide rheostat 18, because the resistance value of the slide rheostat 18 is far larger than the equivalent resistor 17, the slide rheostat 18 shares most of voltage, so that the current in the circuit is not enough to reach the power of the alarm 16, the alarm 16 is in a closed state, and in a normal state, because the resistance value of the slide rheostat 18 is large, the voltage shared in series is large, the slide rheostat 18 generates heat, cooling water is externally connected through the cooling pipe 19 and the external connector 26, the purposes of cooling and heat dissipation of the slide rheostat 18 are achieved, meanwhile, the recovery of energy is achieved, and the utilization efficiency of resources is improved.
Example 2: when the rotating speed of the rotating shaft 2 exceeds the peak value, the generating power of the rotating generator 15 is increased, the current in the circuit reaches the rated value, the alarm 16 gives an alarm, and when the rotating speed of the rotating shaft 2 is overloaded, the equivalent resistor 17 connected in parallel achieves the purpose of shunting the alarm 16, so that the alarm 16 is protected.
Example 3: when the equipment is replaced and the alarm peak value of the rotating speed of the equipment is changed, the telescopic rod 21 drives the sliding block 22 and the poking piece 28 to slide on the spiral resistor 24, the resistance value of the slide rheostat 18 is adjusted, the voltage required by the current reaching the rated value in the circuit is limited, the voltage required by the current is reflected by the generated power of the rotating generator 15, the generated power of the rotating generator 15 is reflected by the rotating speed of the rotating shaft 2, and then before adjustment, the resistance value of the slide rheostat 18 is deduced according to the rotating speed peak value of the rotating shaft 2, so that the alarm 16 is adaptive to the alarm of different rotating speeds.
The electric devices such as the rotating generator 15, the motor 1 and the alarm 16 belong to common technical means in the field and are not described in detail.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a motor shaft rotational speed control system with safety alarm, includes pivot (2), pivot (2) are rotated and are connected motor (1), its characterized in that: the fixed gear (4) meshed with the reduction gearbox (6) is fixedly sleeved on the rotating shaft (2), the fixed gear (4) is meshed with a reduction gear (10) in the reduction gearbox (6), the reduction gear (10) is connected with a rotary generator (15) through a transmission shaft (9), the output end of the rotary generator (15) is electrically connected with a sliding rheostat (18) and an equivalent resistor (17), an alarm (16) is connected in parallel on the equivalent resistor (17), a sliding block (22) controlled to lift by a telescopic rod (21) is arranged on the sliding rheostat (18), one end of the sliding block (22) is connected with the equivalent resistor (17) in series, and a shifting piece (28) slidably attached to a spiral resistor (24) on the outer wall of the sliding rheostat (18) is arranged at the other end of the sliding block (22).
2. The system of claim 1, wherein the motor shaft comprises a safety alarm, and the system comprises: the utility model discloses a motor, including lag (3), reducing gear box (6), pivot (2) and motor (1), be provided with location insert ring (5) on lag (3), the inner chamber of reducing gear box (6) sets up to transmission inner chamber (7), one side that transmission inner chamber (7) are close to lag (3) is provided with the opening, and the open-ended outside is provided with position sleeve (8) of pegging graft on location insert ring (5).
3. The system of claim 2, wherein the motor shaft speed control system comprises a safety alarm, and the safety alarm comprises: the speed reduction gear (10) is arranged in the transmission inner cavity (7), the speed reduction gear (10) is fixedly sleeved on the transmission shaft (9), one end of the transmission shaft (9) is rotatably arranged on the side wall of the reduction gearbox (6) through a bearing (11), and the other end of the transmission shaft (9) extends to the outer side of the reduction gearbox (6).
4. The system of claim 3, wherein the motor shaft speed control system comprises a safety alarm, and the safety alarm comprises: connecting pipes (30) are arranged between the reduction gearbox (6) and the rotary generator (15), adjacent connecting pipes (30) are mounted through symmetrically distributed flange plates (13), the flange plates (13) are fastened through bolts distributed in a circumferential array mode, conversion blocks (12) and input shafts (14) are arranged in the adjacent connecting pipes (30), and the input shafts (14) are connected with the rotary generator (15).
5. The system of claim 3, wherein the motor shaft speed control system comprises a safety alarm, and the safety alarm comprises: the side strips (29) are symmetrically arranged on the outer walls of circular arcs of one ends, close to the conversion block (12), of the transmission shaft (9) and the input shaft (14), insertion holes (31) are respectively formed in two sides of the conversion block (12), limiting grooves (32) are formed in the insertion holes (31), the transmission shaft (9) and the input shaft (14) are respectively inserted into the insertion holes (31), and the side strips (29) are inserted into the limiting grooves (32).
6. The system of claim 1, wherein the motor shaft comprises a safety alarm, and the system comprises: the rotary generator (15), the sliding rheostat (18) and the equivalent resistor (17) form a loop, the sliding rheostat (18) is arranged in an I shape, a cooling pipe (19) is arranged in the middle of the sliding rheostat (18), top plates (25) are arranged at two ends of the sliding rheostat (18), the spiral resistor (24) is sleeved on the cooling pipe (19), and the resistance value of the spiral resistor (24) is larger than that of the equivalent resistor (17).
7. The system of claim 6, wherein the motor shaft speed control system comprises: the sliding rheostat (18) is connected with an equivalent resistor (17) through a connecting rod (20), the resistance value of the equivalent resistor (17) is the same as that of the alarm (16), the alarm (16) is fixedly installed on the rotating generator (15), and the alarm (16) is connected into a loop in parallel.
8. The system of claim 1, wherein the motor shaft comprises a safety alarm, and the system comprises: the slide rheostat (18) is provided with a cooling device, the cooling device is composed of a cooling pipe (19) and a top plate (25), a pair of top plates (25) which are symmetrical up and down are provided with external interfaces (26), the external interfaces (26) are externally connected with a water tank, and the inner sides of the external interfaces (26) are communicated with the cooling pipe (19) through runners (27).
9. The system of claim 8, wherein the motor shaft comprises a safety alarm, and the system further comprises: a loop bar (23) is arranged between the top plates (25) which are vertically adjacent, the telescopic rod (21) is fixed on the top plates (25), a sliding block (22) sleeved on the loop bar (23) is arranged at the end part of the telescopic rod (21), and a splayed shifting sheet (28) attached to the spiral resistor (24) is arranged on the sliding block (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111303479.2A CN114006501B (en) | 2021-11-05 | 2021-11-05 | Motor rotating shaft rotating speed control system with safety alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111303479.2A CN114006501B (en) | 2021-11-05 | 2021-11-05 | Motor rotating shaft rotating speed control system with safety alarm |
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| Publication Number | Publication Date |
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| CN114006501A CN114006501A (en) | 2022-02-01 |
| CN114006501B true CN114006501B (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111303479.2A Active CN114006501B (en) | 2021-11-05 | 2021-11-05 | Motor rotating shaft rotating speed control system with safety alarm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117361066A (en) * | 2023-10-16 | 2024-01-09 | 徐州立方机电设备制造有限公司 | Chain conveyor safety alarm device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB732767A (en) * | 1952-12-17 | 1955-06-29 | Electro Mecanique De Laveyron | Improvements in speed-limiting devices for rotating shafts subjected to variable driving torque |
| CN103560726A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Circuit used for detecting and controlling rotating speed of motor |
| CN109120202A (en) * | 2017-06-26 | 2019-01-01 | 黄静仪 | A kind of rotational speed governor of food processing refiner |
| CN111953260A (en) * | 2020-08-17 | 2020-11-17 | 菏泽学院 | Intelligent control system for motor work monitoring |
-
2021
- 2021-11-05 CN CN202111303479.2A patent/CN114006501B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB732767A (en) * | 1952-12-17 | 1955-06-29 | Electro Mecanique De Laveyron | Improvements in speed-limiting devices for rotating shafts subjected to variable driving torque |
| CN103560726A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Circuit used for detecting and controlling rotating speed of motor |
| CN109120202A (en) * | 2017-06-26 | 2019-01-01 | 黄静仪 | A kind of rotational speed governor of food processing refiner |
| CN111953260A (en) * | 2020-08-17 | 2020-11-17 | 菏泽学院 | Intelligent control system for motor work monitoring |
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