CN101354065A - Apparatus and method for discharging and degaussing of electromagnetic clutch - Google Patents
Apparatus and method for discharging and degaussing of electromagnetic clutch Download PDFInfo
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- CN101354065A CN101354065A CNA2007100441875A CN200710044187A CN101354065A CN 101354065 A CN101354065 A CN 101354065A CN A2007100441875 A CNA2007100441875 A CN A2007100441875A CN 200710044187 A CN200710044187 A CN 200710044187A CN 101354065 A CN101354065 A CN 101354065A
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- magnetic clutch
- demagnetization
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Abstract
The invention discloses a discharging and degaussing device for an electromagnetic clutch and a method thereof. The discharging and degaussing device comprises the electromagnetic clutch and a control unit thereof, a PLC control unit which is connected with the electromagnetic clutch and the control unit of the electromagnetic clutch. The invention is characterized in that: the discharging and degaussing device also comprises an intermediate relay and a degaussing intermediate relay; wherein, the intermediate relay is connected to the digital output control end of the PLC control unit; the auxiliary normal open contact of the intermediate relay is connected to a main circuit of the degaussing intermediate relay; one of the auxiliary normal open contacts of the degaussing intermediate relay is connected with a grounding wire and the other is connected with the coil of the electromagnetic clutch; a discharging and degaussing circuit of the electromagnetic clutch is formed by the connection of the two auxiliary normal open contacts of the degaussing relay with the coil of the electromagnetic clutch and the grounding wire. The device of the invention can discharge and degauss the coil of the clutch, thus reducing the short circuit of the coil and preventing the electromagnetic clutch from abnormal damage.
Description
Technical field
The present invention relates to the control circuit and the method for magnetic clutch, relate in particular to magnetic clutch discharge degaussing gear and method.
Background technique
Clutch is that a kind of turning power with master end on the coaxial line (torsion) or motion send the mechanical device of slave end to, can be according to adhesive freely of user's needs and disengagement, utilize the magnetic clutch that is called that electromagnetic force moves.The electromagnetic force that magnetic clutch utilizes the energization excitation coil magnetic field to be produced is handled joint element, makes clutch adhesive or disengagement, and it is big that it has starting torque, motor reaction is fast, clutch is rapid, and is simple in structure, and installation and maintenance are convenient, long service life, characteristics such as control is simple, and power is little, therefore, magnetic clutch is applied in startup, braking, speed change and the sync control device of various machineries, is used in widely in all kinds of metallurgical industry productions.
Because the magnetic clutch brush is made of copper, brush is by receiving on the clutch coil with the rubbing contact of clutch ring made of iron, the magnetic clutch ring is made high speed rotating in gearbox, the oil film pressure that lubricant oil in the gearbox produces causes the brush copper contact to float, spring force reduces relatively, cause that easily bad connection, electric arc burn clutch ring, cause the damage of clutch ring, cause mechanical cisco unity malfunction.Simultaneously, magnetic clutch uses frequent, causes that each magnetic clutch is thrown off, the blanking time of adhesive is short, frequency is high; Add because coil is similar to inductance element, be one can stored current energy-storage travelling wave tube, under bad working environment, coil is heated and makes moist, the discharge performance variation; After each magnetic clutch is finished a periodic duty, the existence of aftercurrent all can be arranged, accumulation repeatedly causes the clutch coil demagnetization of can not in time discharging, and makes coil burnout, and magnetic clutch is damaged.
Summary of the invention
The object of the present invention is to provide a kind of magnetic clutch discharge degaussing gear and method, this discharge degaussing gear and method can be to the clutch coil demagnetizations of discharging, thereby the minimizing coil short is avoided the improper damage of magnetic clutch.
The present invention is achieved in that a kind of magnetic clutch discharge degaussing gear, comprise magnetic clutch and control unit thereof, the PLC control unit, magnetic clutch and control unit thereof comprise the magnetic clutch body, magnetic clutch amplifies control module, rectifier transformer, low-voltage circuit breaker and relevant work power supply, the PLC control unit is connected with magnetic clutch and control unit thereof, wherein two pins of magnetic clutch amplification control module are connected to the numeral input control end of PLC control unit, it is characterized in that: described magnetic clutch discharge degaussing gear also comprises auxiliary reclay and demagnetization auxiliary reclay, auxiliary reclay is connected on the digital output control terminal of PLC control unit, the auxiliary normally opened contact of auxiliary reclay is connected on the major loop of demagnetization auxiliary reclay, one of the auxiliary normally opened contact of demagnetization auxiliary reclay connects ground wire, another connects the coil of magnetic clutch, two the auxiliary normally opened contacts of demagnetization auxiliary reclay and the coil of magnetic clutch, ground wire has constituted magnetic clutch discharge demagnetization loop.
A kind of method of implementing magnetic clutch discharge degaussing gear the steps include:
In the 1st step, magnetic clutch is in preparedness, receives clutch from the PLC control unit and starts the adhesive signal, trigger magnetic clutch and amplify control module, clutch adhesive control loop proper functioning, clutch adhesive action finishes, and the PLC control unit sends the clutch opening signal;
Do you in the 2nd step, differentiate clutch and whether normally open?
In the 3rd step, if normal, then clutch is opened the control loop proper functioning, and the clutch opening action finishes;
The 4th step, if undesired, then trigger magnetic clutch discharge demagnetization loop, the normally opened contact adhesive action of demagnetization auxiliary reclay forms discharge demagnetization loop, discharges residual current over the ground; After change over to the 3rd the step.
The control flow of described triggering magnetic clutch discharge demagnetization is divided into two the tunnel,
The first via: when satisfying magnetic clutch simultaneously and " be ready to " signal and " startup adhesive " signal, to exporting to the delay function piece after the logical AND of these two signals, the negate, and delay time is set to the delay function piece, the delay function piece is exported to the pulse triggering function block, get the pulse signal of rising edge, as the asserts signal of set/reset function block;
The second the tunnel: " discharge demagnetization " signal of handling through the set/reset function block, export to the second delay function piece, and second delay time is set to the second delay function piece, the second delay function piece is exported to the pulse triggering function block, get the pulse signal of rising edge, as the reset signal of set/reset function block;
The signal of first via control is as asserts signal, and when in the time that is provided with for the first time, first via control signal just entered for the second road time that is provided with for the second time after satisfying; The signal of the second tunnel control is as reset signal, according to the time that is provided with for the second time, the demagnetization of discharging; By the adhesive of digital output control module output control auxiliary reclay, the closed demagnetization auxiliary reclay major loop of connecting of auxiliary reclay normally opened contact, the normally opened contact adhesive action of demagnetization auxiliary reclay triggers discharge demagnetization loop; After the discharge demagnetization, just adopt from the mode that resets, signal is carried out reset processing, return to normal.
The present invention is to the clutch coil demagnetization of in time discharging; thereby minimizing coil short; avoid the improper damage of magnetic clutch; solved the difficult problem that magnetic clutch in use often burns magnetic clutch coil and coil control gear; greatly reduce the accident rate of production scene magnetic clutch; guarantee to produce normal operation, improved manufacturing efficiency.
Description of drawings
Fig. 1 is magnetic clutch discharge degaussing gear circuit diagram of the present invention;
Fig. 2 is magnetic clutch discharge demagnetization method flow chart;
Fig. 3 is for triggering the control flow chart of magnetic clutch discharge demagnetization.
Among the figure: 1 magnetic clutch and control unit thereof, 2PLC control unit, 3 auxiliary reclay K17,4 demagnetization intermediate relay I K3,5 discharge demagnetization loops, 11 magnetic clutch bodies, 12 magnetic clutchs amplify control module, 21 operating table, 22PLC numeral input control, 23PLC numeral output control.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, a kind of magnetic clutch discharge degaussing gear comprises magnetic clutch and control unit 1 thereof, PLC control unit 2, discharge demagnetization unit.Magnetic clutch and control unit 1 thereof comprise that magnetic clutch body 11, magnetic clutch amplify control module 12, rectifier transformer, low-voltage circuit breaker and relevant work power supply; PLC control unit 2 comprises operating table 21, PLC numeral input control 22, PLC numeral output control 23; Discharge demagnetization unit comprises auxiliary reclay 3 and auxiliary normally opened contact 17A and 17B, demagnetization auxiliary reclay 4 and auxiliary normally opened contact 101 and 104.PLC control unit 2 is connected with magnetic clutch and control unit 1 thereof, wherein magnetic clutch two pins 12 and 13 of amplifying control module 12 are connected to numerals input control 22 ends of PLC control unit 2, transmit the signal that clutches " are ready to " for PLC control unit 2.
Like this after receiving PLC control unit 2 output signals " discharge demagnetization ", trigger auxiliary reclay 3, make its auxiliary normally opened contact 17A and 17B adhesive, the result has triggered demagnetization relay 4 again, its auxiliary normally opened contact 101 and 102 adhesives have finally triggered magnetic clutch discharge demagnetization loop 5.
Wherein employed auxiliary reclay 3 is electromagnetic type control relays, and its contact quantity is many, and capacity is big, can increase the control loop number by it, plays the effect that signal amplifies; It is arranged in the circuit, and when the terminal voltage in the circuit had reached specified value, relay is action just.
Referring to Fig. 2, a kind of magnetic clutch discharge degaussing gear, its circuit connection diagram is implemented the discharge demagnetization method of this device as shown in Figure 1, the steps include:
The 1st step, magnetic clutch is in preparedness, receive clutch from PLC control unit (operating table/upper-position unit) and start the adhesive signal, trigger magnetic clutch and amplify control module, clutch adhesive control loop proper functioning, clutch adhesive action finishes, and PLC control unit (operating table/upper-position unit) sends the clutch opening signal;
Do you in the 2nd step, differentiate clutch and whether normally open?
In the 3rd step, if normal, then clutch is opened the control loop proper functioning, and the clutch opening action finishes.
The 4th step, if undesired, then trigger magnetic clutch discharge demagnetization loop, the normally opened contact adhesive action of demagnetization auxiliary reclay forms discharge demagnetization loop, discharges residual current over the ground; After change over to the 3rd the step.
Referring to Fig. 3, the control flow of described triggering magnetic clutch discharge demagnetization is divided into two the tunnel,
The first via: when satisfying magnetic clutch simultaneously and " be ready to " signal and " startup adhesive " signal, to exporting to the delay function piece after the logical AND of these two signals, the negate, and delay time is set to the delay function piece, the delay function piece is exported to the pulse triggering function block, get the pulse signal of rising edge, as the asserts signal of set/reset function block.The delay time physical significance of this delay function piece setting is: after magnetic clutch adhesive release, to the reservation process that this adhesive signal is delayed time, the time of being delayed time is the time of setting.This time is according to the concrete condition setting at scene, such as 1s, promptly after magnetic clutch adhesive release, to the delay time reservation process of 1s of this adhesive signal.
The second the tunnel: " discharge demagnetization " signal of handling through the set/reset function block, export to the second delay function piece, and second delay time is set to the second delay function piece, the second delay function piece is exported to the pulse triggering function block, get the pulse signal of rising edge, as the reset signal of set/reset function block.The second delay time physical significance of the second delay function piece setting is: behind output " discharge demagnetization " signal, this signal is carried out delay process, second delay time of delay time for being provided with promptly discharges the used time of demagnetization.This time is provided with according to concrete field condition, is set to 500ms such as second delay time, and promptly behind output " discharge demagnetization " signal, to the delay time processing of 500ms of this signal, demagnetization 500ms promptly discharges.
The effect of set/reset function block is: the signal of first via control is as asserts signal, and the signal of the second tunnel control is as reset signal.Promptly when in the time that is provided with for the first time (being 1s here), first via control signal satisfies back (this signal will continue 1s), just enters for the second road time that is provided with for the second time; The signal of the second tunnel control is as reset signal, according to the time (being 500ms here) that is provided with for the second time, demagnetization 500ms discharges, its working procedure is: referring to Fig. 1, by 3 adhesives of numeral output control 23 modules output control auxiliary reclay, closed demagnetization auxiliary reclay 4 major loops of connecting of auxiliary reclay normally opened contact 17A and 17B, the normally opened contact 101 of demagnetization auxiliary reclay 4 and 102 adhesives action, trigger discharge demagnetization loop 5, thereby discharge residual current over the ground.After discharge demagnetization 500ms, just adopt from the mode that resets, signal is carried out reset processing, return to normal.
Then, wait for satisfying of first via control signal again, what move in circles successively handles, the final realization: each magnetic clutch is finished after the periodic duty, just once the discharge process of demagnetization, guaranteeing does not have remaining energy accumulation, thereby guarantees the normal operation of clutch.
The present invention is to the clutch coil demagnetization of in time discharging; thereby minimizing coil short; avoid the improper damage of magnetic clutch; solved the difficult problem that magnetic clutch in use often burns magnetic clutch coil and coil control gear; greatly reduce the accident rate of production scene magnetic clutch; guarantee to produce normal operation, improved manufacturing efficiency.
Claims (3)
1, a kind of magnetic clutch discharge degaussing gear, comprise magnetic clutch and control unit thereof, the PLC control unit, magnetic clutch and control unit thereof comprise the magnetic clutch body, magnetic clutch amplifies control module, rectifier transformer, low-voltage circuit breaker and relevant work power supply, the PLC control unit is connected with magnetic clutch and control unit thereof, wherein two pins of magnetic clutch amplification control module are connected to the numeral input control end of PLC control unit, it is characterized in that: described magnetic clutch discharge degaussing gear also comprises auxiliary reclay and demagnetization auxiliary reclay, auxiliary reclay is connected on the digital output control terminal of PLC control unit, the auxiliary normally opened contact of auxiliary reclay is connected on the major loop of demagnetization auxiliary reclay, one of the auxiliary normally opened contact of demagnetization auxiliary reclay connects ground wire, another connects the coil of magnetic clutch, two the auxiliary normally opened contacts of demagnetization auxiliary reclay and the coil of magnetic clutch, ground wire has constituted magnetic clutch discharge demagnetization loop.
2, a kind of method of implementing the described magnetic clutch discharge of claim 1 degaussing gear is characterized in that:
In the 1st step, magnetic clutch is in preparedness, receives clutch from the PLC control unit and starts the adhesive signal, trigger magnetic clutch and amplify control module, clutch adhesive control loop proper functioning, clutch adhesive action finishes, and the PLC control unit sends the clutch opening signal;
Do you in the 2nd step, differentiate clutch and whether normally open?
In the 3rd step, if normal, then clutch is opened the control loop proper functioning, and the clutch opening action finishes;
The 4th step, if undesired, then trigger magnetic clutch discharge demagnetization loop, the normally opened contact adhesive action of demagnetization auxiliary reclay forms discharge demagnetization loop, discharges residual current over the ground; After change over to the 3rd the step.
3, magnetic clutch discharge demagnetization method according to claim 2, it is characterized in that: the control flow that triggers magnetic clutch discharge demagnetization is divided into two the tunnel,
The first via: when satisfying magnetic clutch simultaneously and " be ready to " signal and " startup adhesive " signal, to exporting to the delay function piece after the logical AND of these two signals, the negate, and delay time is set to the delay function piece, the delay function piece is exported to the pulse triggering function block, get the pulse signal of rising edge, as the asserts signal of set/reset function block;
The second the tunnel: " discharge demagnetization " signal of handling through the set/reset function block, export to the second delay function piece, and second delay time is set to the second delay function piece, the second delay function piece is exported to the pulse triggering function block, get the pulse signal of rising edge, as the reset signal of set/reset function block;
The signal of first via control is as asserts signal, and when in the time that is provided with for the first time, first via control signal just entered for the second road time that is provided with for the second time after satisfying; The signal of the second tunnel control is as reset signal, according to the time that is provided with for the second time, the demagnetization of discharging; By the adhesive of digital output control module output control auxiliary reclay, the closed demagnetization auxiliary reclay major loop of connecting of auxiliary reclay normally opened contact, the normally opened contact adhesive action of demagnetization auxiliary reclay triggers discharge demagnetization loop; After the discharge demagnetization, just adopt from the mode that resets, signal is carried out reset processing, return to normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100441875A CN101354065B (en) | 2007-07-25 | 2007-07-25 | Apparatus and method for discharging and degaussing of electromagnetic clutch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100441875A CN101354065B (en) | 2007-07-25 | 2007-07-25 | Apparatus and method for discharging and degaussing of electromagnetic clutch |
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| CN101354065A true CN101354065A (en) | 2009-01-28 |
| CN101354065B CN101354065B (en) | 2010-06-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097184A (en) * | 2015-09-29 | 2015-11-25 | 洛阳轴研科技股份有限公司 | Photoelectricity and time control based demagnetizing apparatus |
| CN112855794A (en) * | 2020-12-28 | 2021-05-28 | 四川建筑职业技术学院 | Method for preventing simultaneous feeding of boring shaft and ram of floor type boring and milling machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2094115U (en) * | 1991-06-25 | 1992-01-22 | 河南省南阳地区微型计算机应用开发中心 | Silencing, remanence-eliminating and economizing protector for coils of electromagnetic switches |
| CN2096550U (en) * | 1991-07-19 | 1992-02-19 | 郑显玉 | Lifting electromagnet controllor |
| KR100652246B1 (en) * | 2005-07-20 | 2006-12-01 | 우리산업 주식회사 | Power connection of field coil assembly for magnetic clutch coupled to automotive compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097184A (en) * | 2015-09-29 | 2015-11-25 | 洛阳轴研科技股份有限公司 | Photoelectricity and time control based demagnetizing apparatus |
| CN112855794A (en) * | 2020-12-28 | 2021-05-28 | 四川建筑职业技术学院 | Method for preventing simultaneous feeding of boring shaft and ram of floor type boring and milling machine |
| CN112855794B (en) * | 2020-12-28 | 2022-05-31 | 四川建筑职业技术学院 | A method for preventing the simultaneous feeding of the boring shaft and the ram of a floor milling and boring machine |
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| CN101354065B (en) | 2010-06-09 |
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