CN112413009A - Stall automatic braking's rotating machine for hardware processing - Google Patents
Stall automatic braking's rotating machine for hardware processing Download PDFInfo
- Publication number
- CN112413009A CN112413009A CN202011306248.2A CN202011306248A CN112413009A CN 112413009 A CN112413009 A CN 112413009A CN 202011306248 A CN202011306248 A CN 202011306248A CN 112413009 A CN112413009 A CN 112413009A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- stall
- starting
- rotating part
- automatic braking
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/002—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a medium with electrically or magnetically controlled internal friction, e.g. electrorheological fluid, magnetic powder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to the technical field of mechanical equipment, and discloses a stall-controlled automatic braking rotating machine for hardware processing, which comprises a shell, wherein a rotating part is movably connected inside the shell, starting grooves are formed in two sides of the rotating part, a first spring is fixedly connected to the outer sides of the starting grooves, a starting block is fixedly connected to the inner sides of the first springs, a dielectric plate is fixedly connected to the inner parts of the starting blocks, a positive plate is fixedly connected to the outer parts of the starting grooves, and a negative plate is fixedly connected to the outer parts of the starting grooves. This stall automatic braking's rotating machine for hardware processing, through mutually supporting of positive plate, negative plate and dielectric plate to control piezo-resistor both ends voltage, under the condition of rotating part stall, make piezo-resistor circular telegram work, thereby switch on the electromagnetic ring circuit, make liquid intracavity magnetorheological fluid have liquid state to change into class solid state, thereby hinder the driving shaft and rotate, reduce the output of driving shaft to the rotating part, realize the automatic braking function of rotating part.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a stall-controlled automatic braking rotating machine for hardware machining.
Background
Along with the improvement of industry and the promotion of machining level, people require more and more to the processing of part, in the production course of working of part, often need use the rotary machine centre gripping part to carry out processing to the part when rotatory, and in the rotatory in-process of part, the condition of rotary machine stall often can appear, thereby lead to the processingquality of part unqualified, the rotating part wearing and tearing are too fast, have caused unnecessary economic loss for the user, can not satisfy user's user demand.
In the use of rotating machine, the condition of rotating part stall that often can appear leading to because of the unstable change of circuit voltage, because of the stall of rotating part, can make the part of centre gripping overspeed rotation in the course of working to cause the excessive processing of part, make the quality of part can not satisfy the production requirement, thereby caused the waste of raw materials, simultaneously, the rotating part of stall can increase user's use risk, is unfavorable for user's use.
Therefore, we propose a stall-controlled automatic-braking rotary machine for hardware processing to solve the above problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a stall automatic braking rotary machine for hardware processing, which has the advantage of automatic braking when a rotating part stalls, and solves the problems that the automatic braking cannot be realized when a common rotary mechanism stalls, and the use risk is increased.
(II) technical scheme
In order to achieve the purpose of automatic braking when the rotating part stalls, the invention provides the following technical scheme: a stall automatic braking rotating machine for hardware processing comprises a shell, wherein a rotating part is movably connected inside the shell, starting grooves are formed in two sides of the rotating part, a first spring is fixedly connected to the outer side of each starting groove, a starting block is fixedly connected to the inner side of the first spring, a dielectric plate is fixedly connected to the inner part of each starting block, a positive plate is fixedly connected to the outer part of each starting groove, a negative plate is fixedly connected to the outer part of each starting groove, a first electromagnet is fixedly connected to two sides of the rotating part, six uniformly distributed deceleration grooves are formed in the inner side of the rotating part, a second spring is fixedly connected to the outer side of each deceleration groove, a deceleration block is fixedly connected to the inner side of each spring, a permanent magnet is fixedly connected to the inner part of each deceleration block, a roller is fixedly connected to the inner side of each, the both sides of stopper all fixedly connected with electromagnetism ring, the inside liquid chamber of having seted up of stopper, the inside swing joint of stopper has the driving shaft.
Preferably, the inside swivelling chute of having seted up of casing, the degree of depth of swivelling chute is less than the height of rotating part, and the installation of the rotating part of being convenient for and casing makes the rotating part can normally rotate in the casing swivelling chute, and the product of being convenient for is to the processing of metal component.
Preferably, the rotating part is metal material, and the recess has been seted up to the inside of rotating part, and the diameter of recess is greater than the diameter of stopper, and the degree of depth of recess is less than the height of stopper, and the mutually supporting of rotating part and stopper of being convenient for makes the gyro wheel stretch out and contact with the outer wall of stopper after two circular telegrams of electro-magnet to produce frictional resistance, brake the rotation part.
Preferably, the positive plate is the same with the negative plate highly, and the negative plate links to each other with the piezo-resistor electrical property, overcomes a spring elastic action and outwards moves under the condition of stall through the dielectric plate to insert between positive plate and the negative plate, change the relative area of positive plate and negative plate, change the voltage at piezo-resistor both ends, thereby control piezo-resistor's operating condition and switch.
Preferably, the actuating block comprises a magnetic assembly, a movable block body and an electric contact, the diameter of the actuating block is smaller than that of the actuating groove, the friction force between the actuating block and the actuating groove is reduced, the movement of the actuating block in the actuating groove is facilitated, and therefore the position of the dielectric plate in the actuating groove is controlled through the rotation speed of the rotating part.
Preferably, the first electromagnet and the opposite surface of the magnetic component in the starting block have the same magnetism, when the first electromagnet is electrified, the first electromagnet generates a magnetic field, and the first electromagnet and the magnetic component in the starting block repel each other due to the same magnetism of the opposite surfaces, so that the starting block cannot move due to the reduction of the rotating speed of the rotating part.
Preferably, the deceleration block is made of metal materials, the diameter of the deceleration block is smaller than that of the deceleration groove, friction force between the deceleration block and the deceleration groove is reduced, the deceleration block can move in the deceleration groove conveniently, the deceleration block is controlled to extend out of the deceleration groove through the work of the electromagnet II, the roller and the brake are in contact extrusion with each other, and friction resistance is generated.
Preferably, the opposite surfaces of the permanent magnet and the second electromagnet are same in magnetism, when the second electromagnet is electrified, the second electromagnet generates a magnetic field, and the second electromagnet and the permanent magnet repel each other due to the fact that the opposite surfaces are same in magnetism, so that the second electromagnet and the permanent magnet are driven to overcome the elastic force of the second spring to move inwards, the roller is in contact with the brake, and the function of reducing the speed of the rotating portion is achieved under the action of frictional resistance.
Preferably, the liquid cavity is filled with magnetorheological fluid, when the electromagnetic ring does not work, the magnetorheological fluid is in a liquid state and does not influence the rotation of the driving shaft, and when the electromagnetic ring works in a power-on mode, the magnetorheological fluid is changed into a solid-like state, so that the rotation of the driving shaft is retarded, the torque of the driving shaft is offset, the output power of the driving shaft to the rotating part is reduced, and the rotating speed of the rotating part is reduced.
(III) advantageous effects
Compared with the prior art, the invention provides a stall-controlled automatic braking rotating machine for hardware processing, which has the following beneficial effects:
1. this stall automatic braking's rotating machine for hardware processing, through mutually supporting of positive plate, negative plate and dielectric plate to control piezo-resistor both ends voltage, under the condition of rotating part stall, make piezo-resistor circular telegram work, thereby switch on the electromagnetic ring circuit, make liquid intracavity magnetorheological fluid have liquid state to change into class solid state, thereby hinder the driving shaft and rotate, reduce the output of driving shaft to the rotating part, realize the automatic braking function of rotating part.
2. This stall automatic braking's rotating machine for hardware processing through the mutually supporting of second electro-magnet and permanent magnet, produces the magnetic field when second electro-magnet is circular telegram because of the rotating part stall, and second electro-magnet and permanent magnet interact drive the deceleration piece and overcome two elasticity of spring and inwards move to make gyro wheel and stopper outer wall extrusion produce frictional resistance, further brake the rotating part, thereby realized the function of product quick braking when the stall.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a rotary portion according to the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 1 according to the present invention;
FIG. 4 is a partially enlarged view of portion B of FIG. 1 according to the present invention.
In the figure: 1. a housing; 2. a rotating part; 3. starting a groove; 4. a first spring; 5. a start block; 6. a dielectric plate; 7. a positive plate; 8. a negative plate; 9. an electromagnet I; 10. a deceleration tank; 11. a second spring; 12. a deceleration block; 13. a permanent magnet; 14. a roller; 15. an electromagnet II; 16. a brake; 17. a voltage dependent resistor; 18. an electromagnetic ring; 19. a liquid chamber; 20. a drive shaft.
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. 1-4, a stall automatic braking rotating machine for hardware processing includes a housing 1, a rotating slot is formed in the housing 1, the depth of the rotating slot is less than the height of a rotating portion 2, so as to facilitate the installation of the rotating portion 2 and the housing 1, so that the rotating portion 2 can normally rotate in the rotating slot of the housing 1, so as to facilitate the processing of metal components by the product, the rotating portion 2 is movably connected in the housing 1, the rotating portion 2 is made of metal material, a groove is formed in the rotating portion 2, the diameter of the groove is greater than the diameter of a brake 16, the depth of the groove is less than the height of the brake 16, so as to facilitate the mutual matching of the rotating portion 2 and the brake 16, so that a roller 14 extends out and contacts with the outer wall of the brake 16 after an electromagnet 15 is energized, thereby generating frictional resistance to brake the rotating portion 2, starting slots 3 are formed in both sides of, the inside fixedly connected with of spring 4 starts piece 5, starts piece 5 and includes magnetic component, removal block and electrical contact, and the diameter of starting piece 5 is less than the diameter that starts groove 3, reduces the frictional force between starting piece 5 and the start groove 3, and the removal of starting piece 5 in starting groove 3 of being convenient for to through the rotation speed of rotating part 2, control the position of dielectric plate 6 in starting groove 3.
The inside of the starting block 5 is fixedly connected with a dielectric plate 6, the outside of the starting groove 3 is fixedly connected with a positive plate 7, the outside of the starting groove 3 is fixedly connected with a negative plate 8, the height of the positive plate 7 is the same as that of the negative plate 8, the negative plate 8 is electrically connected with a piezoresistor 17, the dielectric plate 6 overcomes the elastic action of a spring I4 to move outwards under the condition of stall, so that the dielectric plate is inserted between the positive plate 7 and the negative plate 8, the relative area of the positive plate 7 and the negative plate 8 is changed, the voltage at two ends of the piezoresistor 17 is changed, the working state switching of the piezoresistor 17 is controlled, the two sides of the rotating part 2 are both fixedly connected with an electromagnet I9, the electromagnet I9 is the same as the opposite surface of the magnetic component in the starting block 5 in magnetism, when the electromagnet I9 is electrified, the electromagnet I9, therefore, the starting block 5 cannot move due to the reduction of the rotating speed of the rotating part 2, six deceleration grooves 10 which are uniformly distributed are formed in the inner side of the rotating part 2, the second spring 11 is fixedly connected to the outer side of each deceleration groove 10, the deceleration block 12 is fixedly connected to the inner side of the second spring 11, the deceleration block 12 is made of metal materials, the diameter of the deceleration block 12 is smaller than that of the deceleration groove 10, the friction force between the deceleration block 12 and the deceleration groove 10 is reduced, the deceleration block 12 can move in the deceleration groove 10 conveniently, the deceleration block 12 is controlled to stretch out of the deceleration groove 10 through the operation of the second electromagnet 15, the idler wheel 14 and the brake 16 are in contact extrusion with each other, and friction resistance is generated.
The inside of the speed reducing block 12 is fixedly connected with a permanent magnet 13, the inner side of the speed reducing block 12 is fixedly connected with a roller 14, the outer side of the rotating part 2 is fixedly connected with a second electromagnet 15 which is uniformly distributed by a dielectric plate 6, the opposite surface magnetism of the permanent magnet 13 is the same as that of the second electromagnet 15, when the second electromagnet 15 is electrified, the second electromagnet 15 generates a magnetic field, the second electromagnet 15 and the permanent magnet 13 repel each other due to the same opposite surface magnetism, so that the speed reducing block 12 is driven to move inwards by overcoming the elasticity of the second spring 11, the roller 14 is in contact with a brake 16, the speed reducing function of the rotating part 2 is realized under the action of friction resistance, the inside of the shell 1 is fixedly connected with a brake 16, the top and the bottom of the brake 16 are both fixedly connected with piezoresistors 17, both sides of the brake 16, when the electromagnetic ring 18 does not work, the magnetorheological fluid is in a liquid state, the rotation of the driving shaft 20 is not influenced, and when the electromagnetic ring 18 works in a power-on mode, the magnetorheological fluid is in a solid-like state, so that the rotation of the driving shaft 20 is retarded, the torque of the driving shaft 20 is offset, the output power of the driving shaft 20 to the rotating part 2 is reduced, the rotating speed of the rotating part 2 is reduced, and the driving shaft 20 is movably connected inside the brake 16.
The working principle is as follows: when the product normally works, the centrifugal force of the starting block 5 cannot overcome the elastic force of the first spring 4 to enable the dielectric plate 6 to be completely inserted between the positive plate 7 and the negative plate 8, the first electromagnet 9, the second electromagnet 15 and the electromagnetic ring 18 are not electrified, the speed reducing block 12 is completely accommodated in the speed reducing groove 10 under the action of the second spring 11, the magnetorheological fluid in the liquid cavity 19 is in a liquid state, when the rotating part 2 stalls, the centrifugal force of the starting block 5 is increased due to the increase of the rotating speed, so that the elastic force of the first spring 4 is overcome, the dielectric plate 6 is driven to be completely inserted between the positive plate 7 and the negative plate 8, the voltage at two ends of the piezoresistor 17 is changed to enable the piezoresistor 17 to work, so that the circuit of the electromagnetic ring 18 is connected, the electromagnetic ring 18 generates a magnetic field, the property of the magnetorheological fluid in the liquid cavity 19 is changed, the rotation of the driving shaft 20 is retarded, partial output torque of the driving shaft 20 is offset, so that the rotation speed of the rotating part 2 is rapidly reduced, and the automatic braking function is realized, meanwhile, the starting block 5 is in contact with an electric contact inside the starting groove 3, a circuit of the first electromagnet 9 and the second electromagnet 15 is switched on, the first electromagnet 9 is electrified to generate a magnetic field and interacts with a magnetic component inside the starting block 5, so that the starting block 5 is prevented from moving due to the reduction of the rotation speed of the rotating part 2, the second electromagnet 15 is electrified to generate the magnetic field until the rotating part 2 is reduced to a safe rotation speed, the second electromagnet 15 interacts with the permanent magnet 13, the speed reducing block 12 is driven to overcome the elastic force action of the second spring 11 to move in a phase, the roller 14 is in contact with and extrusion with the brake 16, the friction resistance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 stall automatic braking's rotating machine for hardware processing, includes casing (1), its characterized in that: the improved structure of the motor is characterized in that a rotating part (2) is movably connected inside a shell (1), starting grooves (3) are formed in two sides of the rotating part (2), a first spring (4) is fixedly connected to the outer side of each starting groove (3), a starting block (5) is fixedly connected to the inner side of each first spring (4), a dielectric plate (6) is fixedly connected inside each starting block (5), a positive plate (7) is fixedly connected to the outer side of each starting groove (3), a negative plate (8) is fixedly connected to the outer side of each starting groove (3), a first electromagnet (9) is fixedly connected to two sides of each rotating part (2), six uniformly distributed speed reduction grooves (10) are formed in the inner side of each rotating part (2), a second spring (11) is fixedly connected to the outer side of each speed reduction groove (10), a speed reduction block (12) is fixedly connected to the inner side of each spring, the rotating part (2) outside fixedly connected with dielectric plate (6) evenly distributed's two (15) electromagnets, casing (1) inside fixedly connected with stopper (16), the equal fixedly connected with piezo-resistor (17) in stopper (16) top and bottom, the equal fixedly connected with electromagnetic ring (18) in stopper (16) both sides, liquid chamber (19) have been seted up in stopper (16), stopper (16) inside swing joint has driving shaft (20).
2. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the rotary groove is formed in the shell (1), and the depth of the rotary groove is smaller than the height of the rotary part (2).
3. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the rotating part (2) is made of metal materials, a groove is formed in the rotating part (2), the diameter of the groove is larger than that of the brake (16), and the depth of the groove is smaller than the height of the brake (16).
4. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the positive plate (7) and the negative plate (8) are the same in height, and the negative plate (8) is electrically connected with the piezoresistor (17).
5. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the starting block (5) comprises a magnetic assembly, a moving block body and an electric contact, and the diameter of the starting block (5) is smaller than that of the starting groove (3).
6. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the first electromagnet (9) and the opposite surface of the magnetic component in the starting block (5) have the same magnetism.
7. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the speed reducing block (12) is made of metal materials, and the diameter of the speed reducing block (12) is smaller than that of the speed reducing groove (10).
8. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: and the opposite surfaces of the permanent magnet (13) and the electromagnet II (15) have the same magnetism.
9. The stall-controlled automatic braking rotating machine for hardware processing according to claim 1, characterized in that: the liquid cavity (19) is filled with magnetorheological fluid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011306248.2A CN112413009A (en) | 2020-11-19 | 2020-11-19 | Stall automatic braking's rotating machine for hardware processing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011306248.2A CN112413009A (en) | 2020-11-19 | 2020-11-19 | Stall automatic braking's rotating machine for hardware processing |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112413009A true CN112413009A (en) | 2021-02-26 |
Family
ID=74774626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011306248.2A Withdrawn CN112413009A (en) | 2020-11-19 | 2020-11-19 | Stall automatic braking's rotating machine for hardware processing |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112413009A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113104749A (en) * | 2021-03-26 | 2021-07-13 | 杭州荒楠信息技术有限公司 | Agricultural lifting device stall self-locking device based on centrifugal force principle |
CN113119400A (en) * | 2021-04-18 | 2021-07-16 | 泗县黑犀鸟商贸有限公司 | Card injection molding machine capable of automatically controlling blockage cleaning for finance |
CN113264463A (en) * | 2021-05-20 | 2021-08-17 | 张�杰 | Industrial engineering is carried with crane protection pivot based on electromagnetic damping principle |
CN114872827A (en) * | 2022-03-23 | 2022-08-09 | 泰兴市依科攀船舶设备股份有限公司 | Ship anchoring machine is with speed limiting device that breaks down certainly |
-
2020
- 2020-11-19 CN CN202011306248.2A patent/CN112413009A/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113104749A (en) * | 2021-03-26 | 2021-07-13 | 杭州荒楠信息技术有限公司 | Agricultural lifting device stall self-locking device based on centrifugal force principle |
CN113119400A (en) * | 2021-04-18 | 2021-07-16 | 泗县黑犀鸟商贸有限公司 | Card injection molding machine capable of automatically controlling blockage cleaning for finance |
CN113264463A (en) * | 2021-05-20 | 2021-08-17 | 张�杰 | Industrial engineering is carried with crane protection pivot based on electromagnetic damping principle |
CN113264463B (en) * | 2021-05-20 | 2022-12-30 | 国网浙江慈溪市供电有限公司 | Industrial engineering is carried with crane protection pivot based on electromagnetic damping principle |
CN114872827A (en) * | 2022-03-23 | 2022-08-09 | 泰兴市依科攀船舶设备股份有限公司 | Ship anchoring machine is with speed limiting device that breaks down certainly |
CN114872827B (en) * | 2022-03-23 | 2023-08-18 | 泰兴市依科攀船舶设备股份有限公司 | Self-anchoring speed limiting device for ship anchor machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN112413009A (en) | Stall automatic braking's rotating machine for hardware processing | |
CN110445298B (en) | Motor for centrifugal protection electromagnetic adsorption type electro-rheological glass lifter | |
CN101136565B (en) | Brake motor | |
CN113059206A (en) | Drilling machine for damage-proof drill bit for hardware plate processing | |
CN112616257A (en) | Edging device is used in production of SMT circuit board | |
CN110718986A (en) | Flywheel with controllable rotational inertia | |
CN105370762A (en) | Normally open type centrifugal clutch | |
CN203722400U (en) | Dual-gear direct-current motor brake | |
CN113070788A (en) | Automatic flange grinding device of control | |
CN112059905A (en) | Polishing roller based on polishing of ceramic home ornaments | |
CN112894998A (en) | Perforating device for hollow plate in building decoration | |
CN209046445U (en) | Band-type brake structure and directly drive electric rotary machine | |
CN201113660Y (en) | Braking electric motor | |
CN106601512A (en) | Automatic diverter switch electrical appliance | |
CN108506365A (en) | A kind of novel clutch | |
CN112827091B (en) | Automatic control emergency stop rope pulley for forest rescue | |
CN105370753A (en) | Centrifugal electromagnetic clutch | |
CN212360551U (en) | Electromagnetic clutch mechanism | |
CN204825392U (en) | Two motor dynamic devices that drive and washing machine thereof | |
CN112873359A (en) | Anti-stall cutting machine for manufacturing composite insulation board | |
CN207801681U (en) | A kind of durable electric machine structure | |
CN112476036A (en) | Drilling machine protection device for casting drilling | |
CN219040360U (en) | Stroke-adjustable contactor | |
CN214258314U (en) | Anti-locking electric rotary disc | |
CN217070964U (en) | Anti-stall hardware processing cutting machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210226 |
|
WW01 | Invention patent application withdrawn after publication |