CN114360847A - Electromagnet with accurately controlled low temperature rise and high thrust - Google Patents
Electromagnet with accurately controlled low temperature rise and high thrust Download PDFInfo
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- CN114360847A CN114360847A CN202210024133.7A CN202210024133A CN114360847A CN 114360847 A CN114360847 A CN 114360847A CN 202210024133 A CN202210024133 A CN 202210024133A CN 114360847 A CN114360847 A CN 114360847A
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Abstract
The utility model provides an accurate control low temperature rise, big thrust electro-magnet, includes the electro-magnet, the electro-magnet include yoke, coil, magnet core pipe, quiet iron, move the iron, move iron axial slidable mounting in the magnet core pipe, quiet iron fixed mounting is in the front portion of the interior quiet iron of magnet core pipe, push rod fixed connection is on moving the iron, the push rod passes from the hole of quiet iron, the electro-magnet still include control circuit board, control circuit has on the control circuit board, hall sensor fixed mounting in the electro-magnet, moving iron rear end fixedly connected with rear end pole, fixedly connected with permanent magnet on the rear end pole, hall sensor is fixed to be set up near rear end pole, hall sensor be normally open type, after the electro-magnet actuation, respond to each other between permanent magnet and the hall sensor. The invention makes the electromagnet more reliable in use and simpler in debugging.
Description
Technical Field
The invention relates to an electromagnet, in particular to an electromagnet with accurately controlled low temperature rise and high thrust, belonging to the technical field of electromagnets.
Background
The applicant discloses a low temperature rise and large thrust electromagnet in Chinese patent No. 2014107891755, the power of the coil during and after attraction is controlled by a circuit, so that the electromagnet is powered to start with large current and small current during working, the power of the coil is large when powered to attract so as to generate large attraction and quick response, the power of the coil is small after powered to attract so as to reduce temperature rise, the circuit adopts a delay circuit for controlling, the initial output of the circuit is large current, the output of the circuit is changed into small current after a certain time delay, the output of the circuit is changed into small current (or voltage drop) after a certain time delay, and the electromagnet is attracted within a long time delay, so that the problems of small attraction and high temperature rise of the common electromagnet are well solved, but the electromagnet is found in practical use and needs to be optimized, and the low temperature rise and large thrust electromagnet mainly shows that: because the time of the circuit delay is a fixed value, and each electromagnet has different conditions due to the manufacturing process, the using occasion, the abrasion degree and the like, the attracting time is not consistent, when the attracting time of the electromagnet is equal to the time delay of the circuit, no problem exists in use, but in the design, the time delay of the general design is longer than the attracting time in order to ensure the attraction, so that a coil can work with high power for a certain time after the electromagnet is attracted, and redundant heat can be generated, which can cause energy waste and temperature rise height, and in some cases, when the attracting time of the electromagnet is longer than the time delay of the circuit, the coil which is not attracted yet attracted of the electromagnet becomes the low power to work, and the attraction is obviously reduced under the condition, the attraction of the electromagnet is influenced, and the control is failed, aiming at the problems existing in the current low temperature rise and high thrust electromagnets, new solutions are needed.
Disclosure of Invention
The invention aims to overcome the problems in the prior high-thrust low-temperature-rise electromagnet and provide the electromagnet with low temperature rise and high thrust, which is accurately controlled.
In order to realize the purpose of the invention, the following technical scheme is adopted: the utility model provides an accurate control low temperature rise, big thrust electro-magnet, includes the electro-magnet, the electro-magnet include yoke, coil, core pipe, quiet iron, move indisputable axial slidable mounting in the core pipe, quiet iron fixed mounting moves the front portion of indisputable in the core pipe, push rod fixed connection moves indisputable, the push rod passes in the hole of quiet iron from, the electro-magnet still include control circuit board, control circuit has control circuit on the control circuit board, control circuit have positive pole, negative pole and 555 chips, its characterized in that: a resistor R01, a resistor R02 and a resistor R07 are sequentially connected in series and then connected between the positive electrode and the negative electrode of a power supply, a capacitor C01 is connected in parallel with a resistor R02, two ends of the resistor R02 are connected with a diode D05, one end of a resistor R04 is connected with the high-potential end of a resistor R02, the other end of the resistor R03 and the capacitor C02 are sequentially connected in series, a capacitor C02 is connected with the low-potential end of a resistor R02, an 8 pin of a 555 chip is connected with the high-potential end of a resistor R02, a 1 pin of the resistor R02 and a 7 pin of the resistor R04 are connected between the resistor R04 and the resistor R04, a 3 pin of the Hall sensor is connected between the resistor R04 and the resistor R04 in series, a ground terminal of the resistor R04 and a low-potential end of the resistor R04, a resistor R04 and an output terminal of the triode 04 are connected in series, and a high-potential emitter of the resistor R04 of the triode 04, and a triode 04 are connected in series, and a triode 04, and a triode, A base electrode is connected between a resistor R10 and a resistor R11, a collector electrode is connected between a resistor R08 and a resistor R09, the resistor R08 is connected with a negative electrode, the resistor R08 and the resistor R09 are connected in series and then connected to the grid electrode of the MOS tube I1, one end of a coil is connected with an anode, the other end of the coil is connected with the drain electrode of the MOS tube I1, the source electrode of the MOS tube I1 is connected with a negative electrode, the resistor R12 is connected with a capacitor C11 in series and then connected between the drain electrode and the negative electrode of the MOS tube I1 with the MOS tube, and two diodes D11 and a diode D10 which are opposite in direction are connected in series at two ends of the coil;
the Hall sensor is fixedly installed in the electromagnet, a rear end rod is fixedly connected to the rear end of the moving iron, a permanent magnet is fixedly connected to the rear end rod, the Hall sensor is fixedly arranged near the rear end rod, the Hall sensor is normally open, and the permanent magnet and the Hall sensor are mutually sensed after the electromagnet is attracted.
Further, the method comprises the following steps of; the rear end of the magnetic core tube is fixedly connected with a rear guide sleeve, a sensor framework is sleeved on the rear guide sleeve, the Hall sensor is fixedly connected to the sensor framework, threads are arranged on the periphery of the rear guide sleeve, and a nut is screwed on the threads.
Further, the method comprises the following steps of; the rear guide sleeve is riveted with the magnetic core tube, the rear guide sleeve is a cone close to the magnetic core tube, the sensor framework is sleeved on the cone, and the rear end of the sensor framework is locked by a nut.
Further, the method comprises the following steps of; the back end of the magnetic yoke is provided with a protective cap.
The invention has the positive and beneficial technical effects that: the electromagnet can realize that large current always passes through the coil before attraction, so that large thrust is generated during attraction, the Hall sensor after attraction enables the MOS tube I1 to be switched on and off in a crossed manner through the multivibrator circuit formed by the 555 chip, so that pulse current with a certain duty ratio is in the coil to control the temperature rise of the electromagnet, the circuit controls the size of the current passing through the coil through the position of the moving iron, can accurately control the current in the coil after the electromagnet is attracted, does not cause the inconsistency between the attraction time point and the time point of current change in the coil due to different conditions of the manufacturing process, the use occasion, the abrasion degree, the matching condition of a valve and the like of each electromagnet individual, and is more reliable in use and simpler to debug.
Drawings
Figure 1 is a schematic view of an electromagnet according to the present invention.
Fig. 2 is a control circuit diagram.
Detailed Description
In order to more fully explain the implementation of the present invention, examples of the implementation of the present invention are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.
The invention is explained in further detail in connection with the accompanying drawings, in which: 1: a magnetic yoke; 2: a core tube; 3: a coil; 4: static iron; 5: moving iron; 6: a push rod; 7: a rear end rod; 8: a permanent magnet; 9: a Hall sensor; 10: a circuit board; 11: a rear guide sleeve; 12: a sensor skeleton; 13: a nut; 14: a protective cap.
As shown in the accompanying drawings, an accurate control low temperature rise, high thrust electro-magnet, including the electro-magnet, the electro-magnet include yoke 1, coil 3, magnetic core pipe 2, quiet indisputable 4, move indisputable 5 axial slidable mounting in the magnetic core pipe, quiet indisputable fixed mounting moves the front portion of indisputable in the magnetic core pipe, push rod 6 fixed connection is on moving indisputable, the push rod passes in the hole of quiet iron, hall sensor 9 fixed mounting is in the electro-magnet, move indisputable rear end fixedly connected with rear end pole 7, rear end pole and push rod can be as an organic whole, fixedly connected with permanent magnet 8 on the rear end pole, hall sensor is fixed to be set up near the rear end pole, hall sensor be normally open type, after the electro-magnet actuation, respond to mutually between permanent magnet and the hall sensor. In this embodiment, more specifically, a rear guide sleeve 11 is fixedly connected to the rear end of the magnetic core tube, a sensor skeleton is sleeved on the rear guide sleeve, the hall sensor is fixedly connected to the sensor skeleton 12, a screw thread is arranged on the periphery of the rear guide sleeve, and a nut 13 is screwed on the screw thread. The rear guide sleeve is riveted with the magnetic core tube, the rear guide sleeve is a cone close to the magnetic core tube, the sensor framework is sleeved on the cone, and the rear end of the sensor framework is locked by a nut 13. The back end of the yoke has a protective cap 14.
When this electro-magnet installation, it is as an organic whole with the riveting of back guide pin bushing and magnetic core pipe earlier, with push rod (rear end pole) and move between the iron fixed connection, the permanent magnet is connected to the rear end pole on, then will move the iron and install to the magnetic core pipe in, again with between quiet iron and the magnetic core pipe tight fit fixed connection can.
The electromagnet further comprises a control circuit board, a control circuit is arranged on the control circuit board, the control circuit is provided with an anode, a cathode and a 555 chip, the 555 chip can be an IC7555 module, a resistor R01, a resistor R02 and a resistor R07 are sequentially connected in series and then connected between the anode and the cathode of a power supply, a capacitor C01 is connected with the resistor R02 in parallel, two ends of the resistor R02 are connected with a diode D05, one end of a resistor R04 is connected with the high-potential end of the resistor R02, the other end of the resistor R02 is sequentially connected with a resistor R03 and a capacitor C02 in series, a capacitor C02 is connected with the low-potential end of the resistor R02, an 8 pin of the 555 chip is connected with the high-potential end of the resistor R02, a 1 pin of the low-potential end of the resistor R02, a 7 pin of the resistor R04 and a resistor R5, a 3 pin is connected between the resistor R10 and the resistor R11 in series, a resistor R02 is connected with the high-potential end of the resistor R02, a resistor R05 and the low potential end of the resistor R06 are connected in series, the power supply end of the Hall sensor is connected between a resistor R05 and a resistor R06, the ground end is connected to the low-potential end of a resistor R02, the output end is connected to the 4 pin of the 555 chip, two ends of the resistor R06 provide 5V working voltage for the Hall sensor, the emitter of a triode Q1 is connected to the high-potential end of a resistor R02, the base is connected between a resistor R10 and a resistor R11, the collector is connected between the resistor R08 and a resistor R09, the resistor R08 is connected to the negative pole, the resistor R08 and the resistor R09 are connected in series and then connected to the grid of an MOS tube I1, one end of a coil is connected to the positive pole, the other end of the coil is connected to the drain of the MOS tube I1, the source of the MOS tube I1 is connected to the negative pole, the resistor R12 is connected in series with the capacitor C11 and then connected in parallel to the MOS tube between the coil and the negative pole, and two diodes D11 and D10 which are opposite in direction are connected in series to two ends of the coil.
The working principle of the control circuit in the application is the same as that of the circuit of the low-temperature-rise and high-thrust electromagnet disclosed in Chinese patent No. 2014107891755 by the applicant, compared with the patent, the control circuit adopts the Hall sensor to replace a delay capacitor and a diode connected with the delay capacitor in parallel, and the Hall sensor is installed inside the electromagnet, so that the accurate control of the current conversion time point before and after the electromagnet is attracted is realized. The control circuit adopts 24V voltage, when the power is just switched on, because the Hall sensor is in a normally open type and outputs a low potential, 4 feet of a 555 chip are low potential, 3 feet of the 555 chip are not output, an emitting electrode of a triode Q1 is high potential, a triode Q1 is conducted, a grid electrode of an MOS tube I1 is high potential, an MOS tube I1 is conducted, current flows through a negative electrode from a coil through the MOS tube I1, large current passes through the coil, a moving iron is attracted under the thrust generated by the large current, a permanent magnet is induced with the Hall sensor after attraction, the Hall sensor outputs the high potential, 4 feet of the 555 chip are changed into the high potential, 3 feet alternately output the high potential and the low potential, the triode Q1 is alternately switched on and switched off, the MOS tube I1 is alternately switched on and switched off, pulses with a certain duty ratio flow through the coil, the whole current of the coil is reduced, the temperature rise is controlled, and after the electromagnet is switched off, the induction between the permanent magnet and the Hall sensor is not conducted any more, the hall sensor returns to the normally open state. The functions and working processes of components except the Hall sensor of the control circuit can refer to the explanation in Chinese patent No. 2014107891755.
Because hall sensor itself is magnetic induction element, and the electro-magnet also can produce magnetism in work, in this application, select to install hall sensor in the electro-magnet rear end position, the magnetism of electro-magnet does not have the influence to hall sensor's normal work through the experiment, and the permanent magnet also does not have the influence to the working property of electro-magnet. The sensor framework is matched with the cone to install the Hall sensor and then the Hall sensor is locked through the nut, so that the position of the Hall sensor can be adjusted, and the Hall sensor and the permanent magnet can be reliably induced.
After the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and it is intended that all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical spirit of the present invention shall fall within the technical scope of the present invention, and the present invention shall not be limited to the embodiments illustrated in the description.
Claims (4)
1. The utility model provides an accurate control low temperature rise, big thrust electro-magnet, includes the electro-magnet, the electro-magnet include yoke, coil, core pipe, quiet iron, move indisputable axial slidable mounting in the core pipe, quiet iron fixed mounting moves the front portion of indisputable in the core pipe, push rod fixed connection moves indisputable, the push rod passes in the hole of quiet iron from, the electro-magnet still include control circuit board, control circuit has control circuit on the control circuit board, control circuit have positive pole, negative pole and 555 chips, its characterized in that: a resistor R01, a resistor R02 and a resistor R07 are sequentially connected in series and then connected between the positive electrode and the negative electrode of a power supply, a capacitor C01 is connected in parallel with a resistor R02, two ends of the resistor R02 are connected with a diode D05, one end of a resistor R04 is connected with the high-potential end of a resistor R02, the other end of the resistor R03 and the capacitor C02 are sequentially connected in series, a capacitor C02 is connected with the low-potential end of a resistor R02, an 8 pin of a 555 chip is connected with the high-potential end of a resistor R02, a 1 pin of the resistor R02 and a 7 pin of the resistor R04 are connected between the resistor R04 and the resistor R04, a 3 pin of the Hall sensor is connected between the resistor R04 and the resistor R04 in series, a ground terminal of the resistor R04 and a low-potential end of the resistor R04, a resistor R04 and an output terminal of the triode 04 are connected in series, and a high-potential emitter of the resistor R04 of the triode 04, and a triode 04 are connected in series, and a triode 04, and a triode, A base electrode is connected between a resistor R10 and a resistor R11, a collector electrode is connected between a resistor R08 and a resistor R09, the resistor R08 is connected with a negative electrode, the resistor R08 and the resistor R09 are connected in series and then connected to the grid electrode of the MOS tube I1, one end of a coil is connected with an anode, the other end of the coil is connected with the drain electrode of the MOS tube I1, the source electrode of the MOS tube I1 is connected with a negative electrode, the resistor R12 is connected with a capacitor C11 in series and then connected between the drain electrode and the negative electrode of the MOS tube I1 with the MOS tube, and two diodes D11 and a diode D10 which are opposite in direction are connected in series at two ends of the coil;
the Hall sensor is fixedly installed in the electromagnet, a rear end rod is fixedly connected to the rear end of the moving iron, a permanent magnet is fixedly connected to the rear end rod, the Hall sensor is fixedly arranged near the rear end rod, the Hall sensor is normally open, and the permanent magnet and the Hall sensor are mutually sensed after the electromagnet is attracted.
2. The accurate control low temperature rise, high thrust electro-magnet of claim 1, characterized by: the rear end of the magnetic core tube is fixedly connected with a rear guide sleeve, a sensor framework is sleeved on the rear guide sleeve, the Hall sensor is fixedly connected to the sensor framework, threads are arranged on the periphery of the rear guide sleeve, and a nut is screwed on the threads.
3. The accurate control low temperature rise, high thrust electro-magnet of claim 2, characterized by: the rear guide sleeve is riveted with the magnetic core tube, the rear guide sleeve is a cone close to the magnetic core tube, the sensor framework is sleeved on the cone, and the rear end of the sensor framework is locked by a nut.
4. The accurate control low temperature rise, high thrust electro-magnet of claim 1, characterized by: the back end of the magnetic yoke is provided with a protective cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024133.7A CN114360847B (en) | 2022-01-11 | 2022-01-11 | Electromagnet capable of accurately controlling low temperature rise and high thrust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024133.7A CN114360847B (en) | 2022-01-11 | 2022-01-11 | Electromagnet capable of accurately controlling low temperature rise and high thrust |
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| CN114360847A true CN114360847A (en) | 2022-04-15 |
| CN114360847B CN114360847B (en) | 2023-08-04 |
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| CN202977054U (en) * | 2012-12-13 | 2013-06-05 | 韩明泽 | Switch-type electromagnetic actuator |
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| CN104505214A (en) * | 2014-12-19 | 2015-04-08 | 安阳凯地电磁技术有限公司 | High-thrust low-temperature-rise noise-free alternating-current electromagnet |
| CN207038279U (en) * | 2017-06-30 | 2018-02-23 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of electromagnet |
| CN112382458A (en) * | 2020-10-29 | 2021-02-19 | 江麓机电集团有限公司 | Electronic control type sensing electromagnet capable of adjusting delay switching and keeping |
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2022
- 2022-01-11 CN CN202210024133.7A patent/CN114360847B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10122415A (en) * | 1996-10-14 | 1998-05-15 | Sanmei Denki Kk | Miniature solenoid valve |
| US6819208B1 (en) * | 1999-04-23 | 2004-11-16 | Johnson Controls Automotive Electronics | Electromagnetic linear actuator with position sensor |
| JP2003059716A (en) * | 2001-08-20 | 2003-02-28 | Mitsubishi Electric Corp | Coil drive circuit of electromagnet unit |
| CN101065276A (en) * | 2004-11-26 | 2007-10-31 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Electromagnetically controllable adjusting device and method for the production thereof and/or rectification |
| JP2007059729A (en) * | 2005-08-26 | 2007-03-08 | Terasaki Electric Co Ltd | Electromagnet controller |
| CN202977054U (en) * | 2012-12-13 | 2013-06-05 | 韩明泽 | Switch-type electromagnetic actuator |
| CN104485196A (en) * | 2014-12-19 | 2015-04-01 | 安阳凯地电磁技术有限公司 | Low-temperature-rise great-thrust direct current electromagnet |
| CN104505214A (en) * | 2014-12-19 | 2015-04-08 | 安阳凯地电磁技术有限公司 | High-thrust low-temperature-rise noise-free alternating-current electromagnet |
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| CN112382458A (en) * | 2020-10-29 | 2021-02-19 | 江麓机电集团有限公司 | Electronic control type sensing electromagnet capable of adjusting delay switching and keeping |
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| CN114360847B (en) | 2023-08-04 |
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