CN113437837A - Anti-friction disc alarm device, disc type permanent magnet eddy current coupling and alarm method thereof - Google Patents
Anti-friction disc alarm device, disc type permanent magnet eddy current coupling and alarm method thereof Download PDFInfo
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- CN113437837A CN113437837A CN202110519819.9A CN202110519819A CN113437837A CN 113437837 A CN113437837 A CN 113437837A CN 202110519819 A CN202110519819 A CN 202110519819A CN 113437837 A CN113437837 A CN 113437837A
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
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- Microelectronics & Electronic Packaging (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to an anti-friction disc alarm device, a disc type permanent magnet eddy current coupling and an alarm method thereof, which are arranged on a magnetic transmission device with a driving disc and a driven disc, and comprise the following components: the anti-friction disc assembly is arranged on the driving disc or the driven disc and is positioned on one side, opposite to the driven disc, of the driving disc, when the driving disc and the driven disc are displaced in the axial direction in the opposite direction, a gap between the driving disc and the driven disc is smaller than a preset gap, and the anti-friction disc assembly eliminates the friction resistance and the axial pressure between the driving disc and the driven disc; and the at least one alarm component is arranged corresponding to the anti-friction disc component, and when the clearance between the driving disc and the driven disc is smaller than the safety clearance, the corresponding alarm component is triggered to alarm.
Description
Technical Field
The invention relates to an anti-friction disc alarm device, in particular to an anti-friction disc alarm device for a disc type permanent magnet eddy current coupling and an alarm method thereof.
Background
As a novel product, the disc type permanent magnet eddy current coupling has the structural characteristics of small and exquisite structure, light weight, small vibration, high energy efficiency of permanent magnet materials, small eddy current loss and the like, and is favored by the market due to the advantages of energy conservation and noise reduction, and is applied to various industries.
However, in practical use, due to the influence of various factors, the driving disc and the driven disc of the disc-type permanent magnet eddy current coupling are easy to axially move, deviate from the preset clearance distance, gradually approach to each other until friction occurs, and disc-wiping accidents occur. If the light person can not be found in time, the light person can cause the damage of the product, and the serious person can cause the safety accident. How to effectively solve the problem of cleaning the disc is always a difficult problem in the same industry.
Therefore, in order to solve the defects, the invention particularly provides a device capable of preventing the disc-type permanent magnet eddy current coupling from disc wiping, and meanwhile, a disc wiping alarm device is additionally arranged, when the driving disc and the driven disc exceed a set safety clearance, an alarm switch is triggered, and the alarm emits light and sounds to give an alarm, thereby drawing attention of personnel, maintaining and protecting in time and avoiding safety accidents.
Disclosure of Invention
The invention provides a scratch prevention alarm device aiming at the technical problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a scratch prevention disc alarm device, which is arranged on a magnetic transmission device with a driving disc and a driven disc, and comprises:
and when the driving disc and the driven disc generate axial opposite displacement, the clearance between the driving disc and the driven disc is less than or equal to a preset clearance, and the anti-friction disc assembly eliminates the friction resistance and the axial pressure between the driving disc and the driven disc.
Preferably, the above-mentioned anti-scrub warning device further includes:
and the at least one alarm component is arranged corresponding to the anti-friction disc component, and when the driving disc and the driven disc generate axial opposite displacement, the clearance between the driving disc and the driven disc is less than or equal to a safety clearance, and the corresponding alarm component is triggered to alarm.
Preferably, in the above anti-scrub warning apparatus, the anti-scrub disc assembly includes: the anti-wiping disk comprises an anti-wiping disk front end part and a pressure relief part, wherein the anti-wiping disk front end part is arranged in a through hole in the driving disk and movably protrudes out of the surface of the driving disk, the pressure relief part is arranged in the through hole, and the front end of the pressure relief part contacts the anti-wiping disk front end part and blocks the anti-wiping disk front end part in the through hole.
Preferably, in the anti-friction disc alarm device, the anti-friction front end component is a sphere, and the sphere is rotatably disposed in the through hole.
Preferably, in the above anti-scrub disc alarm device, the pressure relief component includes a stepped columnar thimble and a spring, the spring is enclosed outside the thimble, and one end of the spring is pressed against the stepped portion of the thimble.
Preferably, in the above anti-scrub warning device, the anti-scrub device further includes a plugging device, the plugging device is a cover plate, the cover plate is fixedly disposed on the through hole of the driving disk and located on the outer side of the side, opposite to the driven disk, of the driving disk, and the other end of the spring is pressed against the cover plate.
Preferably, in the above anti-friction disc alarm device, the diameter of the through hole in the driving disc at the outlet on the opposite side of the driving disc and the driven disc is smaller than the diameter of the sphere.
Preferably, in the anti-disc-wiping alarm device, the alarm assembly comprises an alarm, and the pressure relief component is pushed to trigger the alarm to give an alarm;
still include a battery pack, battery pack connects the alarm, works as pressure relief part axial displacement surpasss safety clearance, battery pack switches on the power, supplies the alarm reports to the police.
The invention also provides a disc permanent magnet eddy current coupling comprising: the anti-friction disc alarm device comprises a driving disc and a driven disc, a preset gap is reserved between the driving disc and the driven disc, and any one of the anti-friction disc alarm devices is further arranged on the driving disc or the driven disc.
The invention also provides a disc-wiping prevention warning method for the disc-type permanent magnet eddy current coupler, wherein the disc-type permanent magnet eddy current coupler comprises the following steps: the anti-friction disc alarming method comprises the following steps of:
(1) when the driving disc and the driven disc are displaced in the axial direction, the clearance between the driving disc and the driven disc is smaller than the preset clearance, and the friction resistance between the driving disc and the driven disc is eliminated through the anti-friction disc assembly;
(2) axial pressure from the driven disc is transmitted to the anti-friction disc assembly, and the anti-friction disc assembly counteracts the axial pressure, so that the driving disc and the driven disc are prevented from approaching;
(3) when the distance between the driving disc and the driven disc is further reduced to be smaller than the safety clearance, the anti-friction disc component triggers the alarm component to alarm.
Drawings
FIG. 1 is a schematic cross-sectional view of an anti-scrub alarm device in accordance with an embodiment of the present invention;
FIG. 2 is a perspective view of an embodiment of the present invention;
FIG. 3 is a perspective view of another embodiment of the present invention;
FIG. 4 is a schematic view of the movement direction of the anti-scuffing plate alarm device;
FIG. 5 is a schematic side cross-sectional view of a disc permanent magnet eddy current coupling of the present invention;
FIG. 6 is a side perspective view of the disc permanent magnet eddy current coupling of the present invention;
FIG. 7 is a perspective view of FIG. 6 from another perspective;
FIG. 8 is a schematic diagram of the components of an anti-scrub warning unit in accordance with an embodiment of the present invention;
fig. 9 is another view of fig. 8.
In the above figures:
1. stainless steel ball 2, thimble 3, spring
4. Cover plate 5, button cell holder 6 and flash buzzer
7. Button cell 8, vortex disk 9, permanent magnetism dish
10. Anti-disc-wiping alarm device 20, driving disc 30 and driven disc
100. Anti-scrub pad assembly 101, anti-scrub pad front end component 102, pressure relief component
103. Plugging device 112, stepped columnar thimble 122 and spring
113. Cover plate 200, alarm assembly 201 and alarm
202. Battery pack 203 and battery
Detailed Description
The technical solutions in the embodiments of the present invention will be fully described in detail below with reference to the accompanying drawings. It is obvious that the described embodiments are only some specific embodiments, not all embodiments, of the general technical solution of the present invention. All other embodiments, which can be derived by a person skilled in the art from the general idea of the invention, fall within the scope of protection of the invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Please refer to fig. 1 to 4. Fig. 1 is a schematic cross-sectional view of an anti-scuffing plate alarm device according to an embodiment of the invention. Fig. 2 is a perspective view of an embodiment of the invention. Fig. 3 is a perspective view of another view angle according to an embodiment of the present invention. Fig. 4 is a schematic view of the movement direction of the anti-scratch disc alarm device.
As shown in fig. 1 to 3, a scuff plate preventing alarm device 10 according to an embodiment of the present invention includes: at least one anti-scrub assembly 100 and at least one warning assembly 200; wherein, the anti-friction disc assembly 100 is arranged on the magnetic transmission device with the driving disc 20 and the driven disc 30, and is arranged on the driving disc 20 or the driven disc 30 and is positioned at one side of the driving disc 20 opposite to the driven disc 30; when the driving disk 20 and the driven disk 30 are displaced axially and oppositely, and the clearance between the driving disk 20 and the driven disk 30 is smaller than the preset clearance D2, the friction resistance and the axial pressure between the driving disk 20 and the driven disk 30 are eliminated by the anti-friction disk assembly;
as shown in fig. 1, the scuff plate assembly 100 includes: a front end part 101 of the anti-friction disc, a pressure relief part 102 and a plugging device 103;
the anti-scratch disk front end component 101 is arranged in a through hole in the vortex disk 8 of the driving disk 20 and movably protrudes out of the surface of the driving disk 20, the pressure relief component 102 is arranged in the through hole, and the front end of the pressure relief component 102 contacts the anti-scratch disk front end component 101 and blocks the anti-scratch disk front end component 101 in the through hole. In the embodiment of the present invention, the anti-friction front-end component 101 is a sphere, and the sphere is rotatably disposed in the through hole. The diameter of the through hole of the driving disk 20 at the outlet of the driving disk 20 on the side opposite to the driven disk 30 is smaller than that of the sphere. The pressure relief component 102 includes a stepped cylindrical thimble 112 and a spring 122, the spring 122 is disposed around the outside of the thimble 112, and one end of the spring 122 is pressed against the step of the thimble 112. The blocking device 103 is a cover plate fixedly disposed on the through hole of the driving disk 20 and located outside the opposite side of the driving disk 20 and the driven disk 30, and the other end of the spring 122 is pressed against the cover plate 113.
As shown in fig. 1, the alarm assembly 200 is installed corresponding to the anti-friction disc assembly 100, and when the driving disc 20 and the driven disc 30 are displaced axially toward each other, the clearance between the driving disc 20 and the driven disc 30 is less than or equal to the safety clearance D3, and the corresponding alarm assembly 200 is triggered to alarm.
Wherein, the alarm assembly 200 comprises an alarm 201, when the clearance between the driving disk 20 and the driven disk 30 is smaller than the safety clearance D3, the anti-friction front-end component 101 is pressed by the driving disk 20 and the driven disk 30 to generate an axial pressure, and the pressure relief component 102 is pushed to trigger the alarm 201 to give an alarm.
The alarm assembly 200 further includes a battery assembly 202, the battery assembly 202 being connected to the alarm 201, the battery assembly 202 engaging the battery 203 for alarming by the alarm 201 when the pressure relief member 102 is axially displaced beyond the safety clearance D3.
As shown in fig. 1, the anti-friction front part 101 is mounted on the vortex disk 8 of the active disk 20 and is provided with a convex vortex disk surface D2 of 2mm, which can rotate freely. When the coupler operates, the vortex disc 8 and the permanent magnetic disc 9 on the driven disc 30 rotate in the same direction, the vortex disc 8 rotates at a high speed, the permanent magnetic disc 9 rotates at a low speed, when the two discs move axially and the distance D2 is not more than 2mm, the ball body of the anti-friction front end part 101 contacts with the permanent magnetic disc 9, and the ball body of the anti-friction front end part 101 rubs with the permanent magnetic disc 9 under the influence of the rotation speed difference of the two discs, so that the permanent magnetic disc 9 is prevented from being worn. Meanwhile, the ball of the anti-friction front-end component 101 transmits the axial pressure from the permanent magnet disk 9 to the ejector pin 112, and the spring 122 surrounding the ejector pin 112 counteracts the axial force, so as to achieve the purpose of preventing the permanent magnet disk 8 and the vortex disk 9 from approaching.
When the distance between the permanent magnet disc 9 and the vortex disc 8 is further reduced, the ball body is pressed and continues to move towards the battery 203 along the axial direction, and meanwhile, the thimble 112 is pushed to move towards the battery 203. When the thimble 112 moves to the battery 203 to a certain distance D3 which is not more than 1mm, the positive metal elastic sheet on the battery assembly 202 is pressed on the positive electrode of the button battery 203, the alarm 201 is powered on, and the alarm starts.
As shown in fig. 4, the rotational motion of the two disks is expanded along the axial direction, the rotational speed V1 of the vortex disk 8 is greater than the rotational speed V2 of the permanent magnetic disk 9, and the sphere rotates counterclockwise under the action of the rotational speed difference between the two disks and the friction force of the permanent magnetic disk 9.
In the embodiment, the anti-friction front-end component 101 is a sphere, but the arrangement of the sphere is not intended to limit the invention. In other embodiments, it need not be a sphere. In the present embodiment, the thimble 112 is a stepped column, but the present invention is not limited thereto, and in other embodiments, the thimble need not be stepped.
In the present embodiment, the spring 122 and the thimble 112 are provided as a pressure relief member, but the invention is not limited thereto. In other embodiments, other means for pressure relief may be used.
Please refer to fig. 5 to 7. Fig. 5 is a schematic side cross-sectional view of a disc permanent magnet eddy current coupling of the present invention. Fig. 6 is a side perspective view of the disc permanent magnet eddy current coupling of the present invention. Fig. 7 is a perspective view of fig. 6 from another perspective.
As shown in fig. 1 and 5, a disc-type permanent magnet eddy current coupling according to an embodiment of the present invention includes: the driving disk 20 and the driven disk 30 have a preset gap D1 between the driving disk 20 and the driven disk 30, and the anti-friction disk alarm device 10 is further provided on the driving disk 20 or the driven disk 30.
As shown in fig. 5, the disc-type permanent magnet eddy current coupling 300 is mainly composed of two parts: one part is a driving disc 20 connected with the side of the motor and consists of components such as an annular vortex disc and the like; the other part is a driven disc 30 connected to the load side and composed of a high-strength permanent magnet. The two driving discs are fixed through bolts, a disc-shaped cavity is formed in the middle of the two driving discs, and the driven disc is arranged in the disc-shaped cavity;
meanwhile, the driving disc 20 and the driven disc 30 are of a split structure and are respectively fixed on the motor shaft 40 and the load shaft 50, the driving disc 20 and the driven disc 30 are in non-contact, a gap D1 is formed between the driving disc 20 and the driven disc 30, the gap is generally called as an air gap in the industry, the gap is generally set to be D1-3-4 mm, and the effect of adjusting torque transmission is achieved by adjusting the gap between the two discs.
As shown in fig. 6 and 7, in consideration of the dynamic balance problem of the rotating products, at least 4 (2 left vortex disks and 2 right vortex disks) anti-scratch disk alarm devices 10 are required to be arranged and uniformly distributed on the same circumference. As shown in fig. 6, 8 anti-scrub disc alarm devices 10 are uniformly distributed on the driving disc 8, 4 left vortex discs and 4 right vortex discs, and the anti-scrub disc alarm devices 10 are uniformly distributed on the same circumference, so that the balance requirement of a product can be met, the reliability of the product can be improved, and the problem of scrubbing of the permanent magnetic disc and the vortex disc is effectively solved.
When the driving disk 20 rotates, the vortex disk on the driving disk 20 rotates relatively to the permanent magnet on the driven disk 30, the vortex disk cuts magnetic lines of force to generate an induction magnetic field, the magnetic field interacts with the permanent magnet on the driven disk to drive the driven disk to rotate along with the driving disk, and then the load is driven to rotate. The output torque is controlled by adjusting the clearance between the driving disc and the driven disc, so that the load rotating speed is adjusted and controlled.
In the present embodiment, 8 anti-scrub alarm devices 10 are provided, but the present invention is not limited thereto. In other embodiments, other numbers of scrub protection alarm devices 10 may be provided.
Referring to fig. 8 and 9, it can be seen that the embodiment of the present invention mainly includes: the device comprises a stainless steel ball 1, a thimble 2, a spring 3, a cover plate 4, a button cell seat 5, a flash buzzer 6 and a button cell 7.
As shown in fig. 8, a stepped hole is processed in advance on the vortex disk 8 on the driving disk 20, and the small end of the hole is arc-shaped and is in contact fit with the surface of the stainless steel ball 1 to prevent the stainless steel ball 1 from falling out. 4M 3 threaded holes are uniformly processed around the holes and used for fixing the cover plate 4 and the flash buzzer 6. The stainless steel ball 1 is contacted with the arc surface in the counter bore, the other end is contacted with the thimble 2, under the action of the spring 3, the axial thrust from the permanent magnetic disk 9 is counteracted through the thimble 2. One end of the thimble 2 is contacted with the stainless steel ball, the other end is contacted with the positive pole metal shrapnel on the button cell seat 5, a spring 3 is arranged on the thimble, and under the action of the spring 3, the thimble provides thrust for the stainless steel ball 1 to offset the axial force from the permanent magnetic disk 9. When the stainless steel balls move backwards under the thrust action of the permanent magnetic disc, the ejector pins are pushed by the stainless steel balls to move backwards, and then the ejector pins push the metal elastic sheet on the button battery seat to approach the positive electrode of the button battery. One end is pressed on the small section of the thimble 2, and the other end is pressed on the cover plate 4. In order to prevent the influence of magnetic force, the stainless steel ball 1, the spring 3 and the cover plate 4 are all made of 304 stainless steel materials, the thimble 2 is made of glass fiber reinforced plastics in order to prevent electromagnetism and electricity, and the shell of the button cell holder 5 and the flash buzzer 6 is made of plastics.
The cover plate 4 is in a shape of a circular sheet, 4 phi 3.2 holes are uniformly distributed on the cover plate, and the hole distance is the same as that of 4M 3 threaded holes on the vortex disc 8. After the stainless steel ball 1, the thimble 2 and the spring 3 are sequentially loaded into the counter bore, the cover plate 4 is screwed to the vortex plate 8 by 2M 3X 22 screws. One side of the cover plate 4 is provided with a small boss, the size of the small boss is the same as that of the counter bore of the vortex disc 8, when the cover plate 4 is installed, the direction needs to be noticed, one side of the small boss is installed in the counter bore, on one hand, the small boss is used for compressing the spring 3, on the other hand, the central axis of the cover plate 4 is restrained to be coincident with the central axis of the counter bore, and the limiting effect is achieved. The cover plate 4 is also provided with a groove with the same shape as the button cell holder 5 for installing the button cell holder 5, and the groove can accommodate the whole button cell holder 5.
The button cell seat 5 is used for installing and fixing the button cell, is made of plastic, and is provided with two metal elastic sheets, one metal elastic sheet is positioned in the cell seat, and the other metal elastic sheet is positioned outside the cell seat and is respectively used for connecting the negative electrode and the positive electrode of the button cell 7. When the button battery 7 is arranged in the button battery seat 5, the negative pole of the battery is connected with the metal elastic sheet in the battery seat, the positive pole of the battery is not connected with the metal elastic sheet outside the battery seat, and a gap of 1mm is arranged between the positive pole of the battery and the metal elastic sheet. On the back of the button cell holder 5, two metal elastic sheets respectively extend out to form a small section for connecting with the positive and negative circuits of the flash buzzer 6. Thus, the flashing buzzer 6 and the button cell 7 form a loop. Under normal operating mode, because button cell 7 anodal and the outer metal shrapnel of battery holder do not connect, have 1mm clearance, consequently under normal operating mode, flash of light bee calling organ 6 does not switch on, does not report to the police yet. Only the metal elastic sheet is pushed by the thimble for 1mm until the button cell anode is connected, the flash buzzer 6 is electrified, and then the alarm is given.
Two flash buzzers 6 are processedHoles, pitch and cover plate 4The holes are identical, and two M3X 22 screws can be used to sequentially penetrate through the flashing buzzer 7 and the cover plate 4 and screw the flashing buzzer and the cover plate together on the vortex disc 8. Two circuits extend out of the flash buzzer 6, one circuit is connected to the positive metal elastic piece on the button cell seat 5, and the other circuit is connected to the negative metal elastic piece on the button cell seat 5. Forming a loop with the button cell 7. Because the field noise of the coupler is generally high, the buzzer 6 with the flash light is used, and even if a person cannot hear the sound of the buzzer, the person can see the flash light, so that the attention of the person is attracted.
The invention also provides a disc-wiping prevention alarm method for the disc type permanent magnet eddy current coupling, which comprises the following steps:
(1) when the driving disk 20 and the driven disk 30 are displaced axially and oppositely, and the clearance between the driving disk 20 and the driven disk 30 is smaller than the preset clearance, the friction resistance between the driving disk 20 and the driven disk 30 is eliminated through the anti-friction disk assembly 100;
(2) axial pressure from the driven disk 30 is transmitted to the anti-friction disk assembly 100 and is counteracted by the anti-friction disk assembly 100, thereby preventing the driving disk 20 and the driven disk 30 from approaching;
(3) when the distance between the driving disk 20 and the driven disk 30 is further reduced to be less than the safety clearance, the anti-friction disk assembly 100 triggers the alarm assembly 200 to alarm.
The whole moving process of the stainless steel ball 1 can be divided into two stages, the first stage is that when the distance between the two discs is 1< x and is less than or equal to 2mm, at the moment, the flash buzzer 6 does not give an alarm, and the stainless steel ball 1 gives a counterforce to the permanent magnetic disc 9 under the action of the thimble 2 and the spring 3 to prevent the two discs from approaching. And in the second stage, when the distance x between the two disks is less than or equal to 1mm, the thimble 2 pushes the metal elastic sheet on the button cell seat 5 to be connected with the anode of the button cell 7, the flash buzzer 6 is electrified, and the flash buzzer 6 starts to give an alarm. Meanwhile, the stainless steel ball 1 continues to provide a counterforce to the permanent magnetic disk 9 under the action of the thimble 2 and the spring 3, so that the two disks are prevented from approaching.
In summary, the present invention can eliminate the friction force generated by the contact between the driving disk 20 and the driven disk 30 when the driving disk 20 and the driven disk 30 are axially displaced and the clearance between the driving disk 20 and the driven disk 30 is smaller than the predetermined clearance, and can prevent the driving disk 20 and the driven disk 30 from approaching to some extent; furthermore, the invention can also realize that when the clearance between the driving disc 20 and the driven disc 30 is smaller than the safety clearance, the alarm is given by sound and light, and the attention of workers can be effectively reminded in time so as to avoid disc-wiping accidents; the disc-wiping hidden danger of the disc-type permanent magnet eddy current coupling in the practical use is effectively solved, the safety accidents are reduced, and a large amount of equipment maintenance cost is saved for enterprises.
The above description is for the purpose of describing particular embodiments of the present invention, and is not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and all changes and modifications that can be made therein without departing from the spirit and scope of the present invention. It is noted that in the drawings and in the description, implementations not shown or described are all in a form known to those of ordinary skill in the art and are not described in detail. Furthermore, the above definitions of the various components and processes are not intended to be limited to the specific structures, shapes, or configurations shown in the examples.
Claims (10)
1. An anti-friction disc alarm device is arranged on a magnetic transmission device with a driving disc and a driven disc, and is characterized by comprising:
and when the driving disc and the driven disc generate axial opposite displacement, the clearance between the driving disc and the driven disc is less than or equal to a preset clearance, and the anti-friction disc assembly eliminates the friction resistance and the axial pressure between the driving disc and the driven disc.
2. The scuff plate alarm device of claim 1, further comprising:
and the at least one alarm component is arranged corresponding to the anti-friction disc component, and when the driving disc and the driven disc generate axial opposite displacement, the clearance between the driving disc and the driven disc is less than or equal to a safety clearance, and the corresponding alarm component is triggered to alarm.
3. The scuff plate alarm device of claim 1, wherein the scuff plate assembly includes: the anti-wiping disk comprises an anti-wiping disk front end part and a pressure relief part, wherein the anti-wiping disk front end part is arranged in a through hole in the driving disk and movably protrudes out of the surface of the driving disk, the pressure relief part is arranged in the through hole, and the front end of the pressure relief part contacts the anti-wiping disk front end part and blocks the anti-wiping disk front end part in the through hole.
4. The scuff plate alarm device of claim 3, wherein the anti-friction front member is a ball rotatably disposed within the through hole.
5. The alarm of claim 3, wherein the pressure relief member comprises a stepped cylindrical thimble and a spring, the spring is disposed around the outside of the thimble, and one end of the spring is pressed against the stepped thimble.
6. The anti-friction disc alarm device according to claim 3, wherein the anti-friction disc device further comprises a blocking device, the blocking device is a cover plate, the cover plate is fixedly arranged on the through hole of the driving disc and is positioned on the outer side of the side, opposite to the driven disc, of the driving disc, and the other end of the spring is pressed on the cover plate.
7. The scuff plate alarm device of claim 3, wherein the through hole in the driving plate has a diameter at the outlet on the opposite side of the driving plate from the driven plate that is less than the diameter of the sphere.
8. The anti-scratch disc alarm device of claim 2, wherein the alarm assembly comprises an alarm, and the pressure relief component is pushed to trigger the alarm to give an alarm;
still include a battery pack, battery pack connects the alarm, works as pressure relief part axial displacement surpasss safety clearance, battery pack switches on the power, supplies the alarm reports to the police.
9. A disc permanent magnet eddy current coupling, comprising: the anti-friction disc alarm device comprises a driving disc and a driven disc, a preset gap is reserved between the driving disc and the driven disc, and the anti-friction disc alarm device is further arranged on the driving disc or the driven disc according to any one of claims 1 to 8.
10. A disc-wiping prevention alarm method for a disc type permanent magnet eddy current coupling comprises the following steps: the anti-friction disc alarming device is characterized by comprising a driving disc and a driven disc, wherein a preset gap is reserved between the driving disc and the driven disc, the driving disc or the driven disc is further provided with the anti-friction disc alarming device as claimed in any one of claims 1 to 9, and the anti-friction disc alarming method comprises the following steps:
(1) when the driving disc and the driven disc are displaced in the axial direction, the clearance between the driving disc and the driven disc is smaller than the preset clearance, and the friction resistance between the driving disc and the driven disc is eliminated through the anti-friction disc assembly;
(2) axial pressure from the driven disc is transmitted to the anti-friction disc assembly, and the anti-friction disc assembly counteracts the axial pressure, so that the driving disc and the driven disc are prevented from approaching;
(3) when the distance between the driving disc and the driven disc is further reduced to be smaller than the safety clearance, the anti-friction disc component triggers the alarm component to alarm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110519819.9A CN113437837B (en) | 2021-05-13 | 2021-05-13 | Anti-friction disc alarm device, disc type permanent magnet eddy current coupling and alarm method thereof |
Applications Claiming Priority (1)
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Cited By (1)
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CN113949242A (en) * | 2021-10-19 | 2022-01-18 | 北京巴什卡科技有限公司 | Magnetic torque limiter with overload protection |
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