CN107919252B - Electromagnetic contactor with counter - Google Patents
Electromagnetic contactor with counter Download PDFInfo
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- CN107919252B CN107919252B CN201711455486.8A CN201711455486A CN107919252B CN 107919252 B CN107919252 B CN 107919252B CN 201711455486 A CN201711455486 A CN 201711455486A CN 107919252 B CN107919252 B CN 107919252B
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- counter
- electromagnetic contactor
- support
- contact support
- contactor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/08—Indicators; Distinguishing marks
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to an electromagnetic contactor with a counter, which comprises an electromagnetic contactor, the counter, a counter driving piece and a moving contact support, wherein the electromagnetic contactor comprises a shell, the moving contact support is arranged on the electromagnetic contactor, the counter driving piece is arranged on the counter, the end part of the counter driving piece is connected with the moving contact support, and the moving contact support drives the counter driving piece to move so that the counter driving piece triggers the counter to count. The electromagnetic contactor has the advantages of simple structure, reasonable design and convenient assembly, does not occupy auxiliary contacts of the electromagnetic contactor, can reasonably count the times of electric contact actions, ensures that the electromagnetic contactor is maintained and replaced at proper time, and improves the economy and the safety of the electromagnetic contactor in use.
Description
Technical Field
The invention relates to an electromagnetic contactor, in particular to an electromagnetic contactor with a counter.
Background
Electromagnetic contactors are widely used in industrial automation control equipment. The actual number of times of operation of each electromagnetic contactor varies greatly depending on the use environment, the use frequency, and the like. Electromagnetic contactor data provided by manufacturers include mechanical life and electrical life. Since the charged action is much more damaging to the contacts than the uncharged action, the number of electrical lifetimes is much lower than the mechanical lifetime. Generally, electromagnetic contactors are used in a charged state, so in practical application, the number of times of electric life is generally concerned.
If the electromagnetic contactor needs to be repaired or replaced is determined according to the uniform service time, the actual electrification operation times of each electromagnetic contactor are unknown, and the actual electrification operation times of each electromagnetic contactor are greatly different, so that the actual electrification operation times of the electromagnetic contactors and the electricity life data provided by manufacturers are greatly different. It is not economical if the electromagnetic contactor is repaired or replaced too early; if the electromagnetic contactor is repaired or replaced too late, potential safety hazards are caused.
Chinese utility model patent publication No. CN2805064Y introduces "a contactor with self-detection device", and its counter pulse counting contact is connected to the auxiliary contact of the contactor, and the input terminal of the counter driving power supply is connected to the main contact main loop power supply of the control contactor. When the contactor causes the main power circuit to lose phase due to poor contact quality, although the contactor is closed, the counter cannot count due to insufficient driving voltage; when the executing mechanism has mechanical jamming and other phenomena, the counter cannot count because the pulse counting point of the counter cannot be completely closed.
This patent has the following problems: the wiring is complex, and the counter needs to be connected with a pulse counting contact line of the counter besides a power line; resources are occupied, and the pulse counting contact of the counter is connected to the auxiliary contact of the contactor, so that the auxiliary contact is occupied, and the function expansion of the contactor is not facilitated; the counting of the electric service life is unreasonable, when the electromagnetic contactor causes the main power circuit to lack of phase due to poor quality of the contact, the counter should count at the moment because the probability of the lack of phase when three phases are the same is very small, and some phases lack of phase and other phases still have live action. The count cannot be accurately determined for a virtual contact condition that is too damaging to the contacts. The contactor may cause the phase loss of the main power circuit due to poor contact quality, and may also cause the virtual contact of the moving contact and the static contact. The virtual contact can cause arc discharge between the moving contact and the fixed contact, and the burning loss of the contact is aggravated. In the case of the dummy contact, the voltage between the contacts increases rapidly, and the counter may not count due to insufficient driving voltage, which may affect the determination of the contact state of the contactor.
The chinese patent publication No. CN201449946U discloses an electromagnetic contactor capable of recording the number of times of actions, in which a counter is connected in parallel to a control coil of the electromagnetic contactor, when the control coil of the electromagnetic contactor is powered on, the electromagnetic contactor acts, and the counter is powered on at the same time, so that the counter acts.
This patent has the following problems: the counting is inaccurate, and when the executing mechanism has mechanical jamming and the like, the counting can be carried out, so that the judgment of the contact state of the contactor is influenced.
The invention patent publication No. CN201449947U of China introduces an electromagnetic contactor with a counter, the counter is fixed on the side surface of the electromagnetic contactor and is connected with an auxiliary contact of the electromagnetic contactor, when the electromagnetic contactor is electrified and closed, the auxiliary contact inputs an action signal to the counter, and the counter counts once.
This patent has the following problems: the wiring is complex, and the counter needs to be connected with an auxiliary contact of the contactor besides a power supply wire; and resources are occupied, and the counter is connected with an auxiliary contact of the contactor, so that an auxiliary contact is occupied, and the function expansion of the contactor is not facilitated.
Disclosure of Invention
The invention aims to: the electromagnetic contactor with the counter is provided for solving the technical problems that an electromagnetic contactor with the counter in the prior art is complex in structure, inconvenient to assemble, occupies an auxiliary contact of the electromagnetic contactor during counting, and is unreasonable in calculation of the number of electrical contact actions.
The technical scheme adopted by the invention is as follows: the utility model provides a take electromagnetic contactor of counter, includes electromagnetic contactor, counter driving piece and moving contact support, electromagnetic contactor include the shell, the last moving contact support that is equipped with of electromagnetic contactor, the counter on be equipped with the counter driving piece, the tip and the moving contact support of counter driving piece link to each other, drive the motion of counter driving piece through moving contact support, make the counter driving piece trigger the counter and count.
In the present invention: the counter is connected with the electromagnetic contactor through the counter support.
In the present invention: the counter support is provided with a buckle matched with the clamping groove, and the counter support is fixed on the shell of the electromagnetic contactor through the clamping of the buckle and the clamping groove.
In the present invention: the counter support is provided with a first threaded hole, the base of the counter is provided with a second threaded hole, and the first threaded hole and the second threaded hole are fixed through screws, so that the counter is fixed on the counter support.
In the present invention: the counter driving piece is arranged in the second groove on the moving contact support through the first groove on the shell of the electromagnetic contactor.
In the present invention: when the movable contact support triggers the counter to count, the stroke of the movable contact support is greater than 1/2 of the total stroke of the movable contact support.
In the present invention: the counter is a mechanical counter.
After the technical scheme is adopted, the invention has the beneficial effects that: the electromagnetic contactor has the advantages of simple structure, reasonable design and convenient assembly, does not occupy auxiliary contacts of the electromagnetic contactor, can reasonably count the times of electric contact actions, ensures that the electromagnetic contactor is maintained and replaced at proper time, and improves the economy and the safety of the electromagnetic contactor in use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an electromagnetic contactor according to the present invention;
FIG. 3 is a schematic diagram of a counter according to the present invention;
FIG. 4 is a schematic view of the structure of the counter support of the present invention.
In the figure: 1. an electromagnetic contactor; 2. a moving contact support; 3. a counter support; 4. a counter; 5. a counter drive; 11. a first groove; 12. a card slot; 21. a second groove; 31. buckling; 32. a first threaded hole; 41. and a second threaded hole.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As can be seen from fig. 1-4, an electromagnetic contactor with a counter includes an electromagnetic contactor 1, a counter 4, a counter driving element 5 and a movable contact support 2, the counter 4 is a mechanical counter, the electromagnetic contactor 1 includes a housing, the movable contact support 2 is disposed on the electromagnetic contactor 1, the counter driving element 5 is disposed on the counter 4, an end of the counter driving element 5 is connected to the movable contact support 2, the movable contact support 2 drives the counter driving element 5 to move, so that the counter driving element 5 triggers the counter 4 to count; the counter 4 is connected with the electromagnetic contactor 1 through the counter support 3. The shell of the electromagnetic contactor 1 is provided with two clamping grooves 12, the counter support 3 is provided with a buckle 31 matched with the clamping grooves 12, and the counter support 3 is fixed on the shell of the electromagnetic contactor 1 through the clamping connection of the buckle 31 and the clamping grooves 12; the counter support 3 is provided with a first threaded hole 32, the base of the counter 4 is provided with a second threaded hole 41, and the first threaded hole 32 and the second threaded hole 41 are fixed through screws, so that the counter 4 is fixed on the counter support 3. The counter driving piece 5 is arranged in the second groove 21 on the movable contact support 2 through the first groove 11 on the shell of the electromagnetic contactor 1. When the movable contact support 2 triggers the counter 4 to count, the stroke of the movable contact support 2 is greater than 1/2 of the total stroke of the movable contact support 2.
In specific implementation, when the electromagnetic contactor 1 is electrified and attracted, the upper surface of the second slot 21 on the movable contact support 2 drives the counter driving part 5 to move downwards, and when the counter driving part 5 moves downwards to a specified position, the counter 4 counts once.
Through proper design, when the movable contact support 2 moves downwards to a designated distance, the counter driving piece 5 moves downwards to a designated position, and the counter 4 counts once. The distance ensures that electric arcs can not be generated between the movable contact and the fixed contact when the movable contact and the fixed contact are away from the distance in the attracting process. For example, when the stroke of the movable contact support 2 is 2/3 of the total stroke of the movable contact support 2, the counter 4 is made to count once.
When the moving contact support 2 continues to move downwards, the distance between the moving contact and the static contact is rapidly reduced, and arc discharge is likely to occur between the moving contact and the static contact, so that even if the moving contact and the static contact are not finally contacted due to some reason, the electromagnetic contactor is considered to have once electrified action and count once.
When the moving contact support 2 moves downwards to the attraction position, if the electromagnetic contactor causes the main power circuit to lack of phase due to poor contact quality, the probability of the lack of phase when three phases are the same is very small, and some phases lack of phase and other phases are still in contact, so the counter counts at the moment. If the electromagnetic contactor makes a virtual contact due to poor quality of the contactor, the counter should count at this time because the continuous arcing has a great influence on the contactor. Because the open-phase and virtual contact triggering occurs under the condition of the attraction of the electromagnetic contactor, when the moving contact support 2 moves downwards to the attraction position, the counter 4 counts once, so the counting under the conditions of the open-phase and virtual contact can not be omitted.
When the executing mechanism of the electromagnetic contactor 1 has mechanical blocking and the like, the moving contact support 2 stops moving when not moving downwards to a specified distance, and at the moment, electric arcs cannot be generated between the moving contact and the static contact, so that the number of electrified actions of the electromagnetic contactor 1 is not counted. At this time, the upper surface of the second slot 21 of the movable contact support 2 cannot drive the counter driving element 5 to move downwards to a specified position, so that the counter 4 does not count.
The invention can reasonably record the number of the electrified actions of the electromagnetic contactor, and can judge whether the electromagnetic contactor needs to be maintained or replaced by comparing the number of the electrified actions recorded by the counter with the number of the electric service life of the electromagnetic contactor provided by a manufacturer, thereby improving the economical efficiency and the safety of the electromagnetic contactor in use.
The technical scheme does not need to occupy an auxiliary contact and does not influence the function expansion of the contactor. The present embodiment employs a mechanical counter, but is not limited to a mechanical counter. The embodiment adopts the mechanical counter, so that a power line does not need to be connected, and the assembly is simpler.
The counter 4 is mounted on the electromagnetic contactor 1 through the counter support 3, and may also be mounted on the electromagnetic contactor 1 through other fixing methods, for example, the counter 4 is directly fixed on the electromagnetic contactor 1 through a super glue.
In the invention, during specific implementation, a microswitch can be arranged on one side of the electromagnetic contactor 1 and fixed on the electromagnetic contactor 1 through a corresponding support, the end part of a microswitch driving part passes through a groove I11 on the shell of the electromagnetic contactor 1 to be connected with a movable contact support 2, and the movable contact support 2 drives a microswitch driving part to move, so that the microswitch driving part triggers the microswitch and the on-off state of the microswitch is changed; the micro switch is provided with two outgoing lines and can be connected to the electronic counter, and the electronic counter counts through the change of the on-off state of the micro switch, so that the electronic counter at a distance is controlled through the micro switch. This solution also makes it possible to dispense with auxiliary contacts.
The above description is directed to specific embodiments of the present invention, but the present invention is not limited to the above description. Any equivalent modifications and alterations to this technical solution would be considered within the scope of this invention by those skilled in the art. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (3)
1. An electromagnetic contactor with a counter is characterized in that: the electromagnetic contactor comprises a shell, the electromagnetic contactor is provided with a moving contact support, the counter is provided with a counter driving piece, the end part of the counter driving piece is connected with the moving contact support, the moving contact support drives the counter driving piece to move, and the counter driving piece triggers the counter to count;
the counter is connected with the electromagnetic contactor through a counter support;
the end part of the counter driving part is arranged in the second groove on the movable contact support through the first groove on the shell of the electromagnetic contactor;
when the movable contact support triggers the counter to count, the stroke of the movable contact support is greater than 1/2 of the total stroke of the movable contact support, and the stroke of the movable contact support enables electric arcs between the movable contact and the fixed contact not to be generated;
the counter is a mechanical counter.
2. The electromagnetic contactor with a counter according to claim 1, wherein: the counter support is provided with a buckle matched with the clamping groove, and the counter support is fixed on the shell of the electromagnetic contactor through the clamping of the buckle and the clamping groove.
3. The electromagnetic contactor with a counter according to claim 2, wherein: the counter support is provided with a first threaded hole, the base of the counter is provided with a second threaded hole, and the first threaded hole and the second threaded hole are fixed through screws, so that the counter is fixed on the counter support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455486.8A CN107919252B (en) | 2017-12-28 | 2017-12-28 | Electromagnetic contactor with counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455486.8A CN107919252B (en) | 2017-12-28 | 2017-12-28 | Electromagnetic contactor with counter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107919252A CN107919252A (en) | 2018-04-17 |
| CN107919252B true CN107919252B (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711455486.8A Active CN107919252B (en) | 2017-12-28 | 2017-12-28 | Electromagnetic contactor with counter |
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| Country | Link |
|---|---|
| CN (1) | CN107919252B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160900A (en) * | 1978-01-11 | 1979-07-10 | General Motors Corporation | Mileage switch and latch means |
| GB2288260A (en) * | 1994-04-08 | 1995-10-11 | Gen Electric | Circuit breaker indication counter |
| CN2805064Y (en) * | 2005-06-27 | 2006-08-09 | 宝钢集团上海梅山有限公司 | Contacting means with self-testing device |
| CN101183620A (en) * | 2006-10-17 | 2008-05-21 | Ls产电株式会社 | Operation counter driving apparatus for air circuit breaker |
| CN201072733Y (en) * | 2007-08-21 | 2008-06-11 | 西安开天铁路牵引电器有限公司 | Electromagnetic contactor with counter |
| CN201449947U (en) * | 2009-08-07 | 2010-05-05 | 西安开天铁路牵引电器有限公司 | Electromagnetic contactor with counter |
| CN201449946U (en) * | 2009-08-07 | 2010-05-05 | 西安开天铁路牵引电器有限公司 | Electromagnetic contactor capable of recording movement times |
| CN205911258U (en) * | 2016-08-10 | 2017-01-25 | 广州白云电器设备股份有限公司 | A link mechanism formula counting assembly for circuit breaker operating device |
| CN205959914U (en) * | 2016-06-30 | 2017-02-15 | 新疆特变电工自控设备有限公司 | Can read circuit breaker of combined floodgate number of times |
| CN207587641U (en) * | 2017-12-28 | 2018-07-06 | 南京工程学院 | A kind of electromagnetic contactor of tape counter |
-
2017
- 2017-12-28 CN CN201711455486.8A patent/CN107919252B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160900A (en) * | 1978-01-11 | 1979-07-10 | General Motors Corporation | Mileage switch and latch means |
| GB2288260A (en) * | 1994-04-08 | 1995-10-11 | Gen Electric | Circuit breaker indication counter |
| CN2805064Y (en) * | 2005-06-27 | 2006-08-09 | 宝钢集团上海梅山有限公司 | Contacting means with self-testing device |
| CN101183620A (en) * | 2006-10-17 | 2008-05-21 | Ls产电株式会社 | Operation counter driving apparatus for air circuit breaker |
| CN201072733Y (en) * | 2007-08-21 | 2008-06-11 | 西安开天铁路牵引电器有限公司 | Electromagnetic contactor with counter |
| CN201449947U (en) * | 2009-08-07 | 2010-05-05 | 西安开天铁路牵引电器有限公司 | Electromagnetic contactor with counter |
| CN201449946U (en) * | 2009-08-07 | 2010-05-05 | 西安开天铁路牵引电器有限公司 | Electromagnetic contactor capable of recording movement times |
| CN205959914U (en) * | 2016-06-30 | 2017-02-15 | 新疆特变电工自控设备有限公司 | Can read circuit breaker of combined floodgate number of times |
| CN205911258U (en) * | 2016-08-10 | 2017-01-25 | 广州白云电器设备股份有限公司 | A link mechanism formula counting assembly for circuit breaker operating device |
| CN207587641U (en) * | 2017-12-28 | 2018-07-06 | 南京工程学院 | A kind of electromagnetic contactor of tape counter |
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| Publication number | Publication date |
|---|---|
| CN107919252A (en) | 2018-04-17 |
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