CN211788828U - Novel electromagnetic contactor control device - Google Patents
Novel electromagnetic contactor control device Download PDFInfo
- Publication number
- CN211788828U CN211788828U CN202020045371.2U CN202020045371U CN211788828U CN 211788828 U CN211788828 U CN 211788828U CN 202020045371 U CN202020045371 U CN 202020045371U CN 211788828 U CN211788828 U CN 211788828U
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- Prior art keywords
- coil
- travel switch
- contact
- electromagnetic contactor
- movable
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000004907 flux Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Abstract
The utility model discloses a novel electromagnetic contactor control device, which is used for controlling a contact actuation component, wherein the contact actuation component comprises a first coil, a second coil and a movable component; the coil suction control assembly comprises a first travel switch; the normally closed contact of the first travel switch is connected with the second coil in parallel and then connected in series in a loop of the first coil; after the first coil is electrified to drive the contact of the first travel switch to act, the second coil is connected in series in the loop of the first coil, the normally closed contact of the first travel switch is connected in series in the loop of the first coil after being connected in parallel with the second coil, then the normally closed contact of the first travel switch can short-circuit the second coil when starting, thereby the voltage of a starting power supply is directly loaded at two ends of the first coil, after the movable contact is contacted with the static contact by sucking down the movable core of the first coil, the contact at the beginning of the first travel is pressed down by the pressing block, the normally closed contact is separated, the second coil is connected in series in the loop of the first coil, and the effect of reducing the voltage and limiting the current is realized.
Description
Technical Field
The utility model belongs to the technical field of the contactor, specifically speaking relates to a novel electromagnetic contactor control device.
Background
The electric locomotive and other locomotives installed with electric transmission devices are provided with a current transformer arranged in a traction main circuit. The traction converter functions to convert electrical energy between the dc system and the ac system and to control and regulate various traction motors to control the operation of the locomotive.
In order to realize the on/off of the input end of the auxiliary converter and the secondary side auxiliary winding of the main transformer, an electromagnetic contactor is required to be installed in the traction auxiliary converter of the power-concentrated motor car; although the existing electromagnetic contactor can realize the on/off of the input end of the auxiliary converter and the secondary side auxiliary winding of the main transformer, because the voltage of the input end of the converter and the secondary side auxiliary winding of the main transformer is high and the current is large, strong electric arcs can be generated when the electromagnetic contactor is switched in an on-off mode, the existing electromagnetic contactor often adopts an arc extinguishing cover to extinguish the electric arcs, but the arc extinguishing effect is poor, so that the contacts and the internal structure of the electromagnetic contactor are often burnt by the electric arcs, and the electromagnetic contactor is damaged; in addition, when the electromagnetic contactor is closed, a coil with larger current and high attractive force is needed to be used for starting, and the movable contact is contacted with the fixed contact, but the requirements on the power and the attractive force of the coil are reduced after starting, so that the movable contact and the fixed contact can be maintained to be continuously contacted in a long-term power-on operation state only by using a coil working with low power.
Disclosure of Invention
The utility model aims at providing a novel electromagnetic contactor control device, it is anticipated to solve the technical problem who exists in the background art.
In order to solve the technical problem, the purpose of the utility model is to realize like this:
a novel electromagnetic contactor control device is used for controlling a contact actuation assembly, wherein the contact actuation assembly comprises a first coil, a second coil and a movable assembly; comprises that
The coil suction control assembly comprises a first travel switch; the normally closed contact of the first travel switch is connected with the second coil in parallel and then connected in series in a loop of the first coil; after the contact of the first travel switch can be squeezed when the first coil is electrified to drive the movable assembly to act, the second coil is connected in series in a loop of the first coil.
On the basis of the above scheme and as a preferable scheme of the scheme: the movable iron core is characterized by further comprising a second travel switch, the first travel switch and the second travel switch are symmetrically arranged on two sides of the movable iron core, and the two pressing blocks are symmetrically arranged and correspond to the first travel switch and the second travel switch respectively.
On the basis of the above scheme and as a preferable scheme of the scheme: the electromagnetic contactor also comprises a movable contact leading-out end fixedly arranged on the electromagnetic contactor main body, and the movable contact is connected with the movable contact leading-out end through a flexible conductive material.
On the basis of the above scheme and as a preferable scheme of the scheme: the movable assembly can simultaneously press or release the contacts of the first travel switch and the second travel switch.
On the basis of the above scheme and as a preferable scheme of the scheme: the two power line leading-out ends of the first coil and the second coil which are connected in series are also connected in parallel by a voltage dependent resistor and a capacitor.
On the basis of the above scheme and as a preferable scheme of the scheme: the movable assembly comprises a movable iron, and a pressing block is fixedly arranged on the movable iron core; after the movable iron core moves downwards for a set distance, the pressing block extrudes the contact of the first travel switch, so that the normally closed contact of the first travel switch is disconnected.
On the basis of the above scheme and as a preferable scheme of the scheme: the first travel switch and the second travel switch are symmetrically arranged on two sides of the movable iron core, the movable iron core is symmetrically provided with two press blocks, and each press block corresponds to the first travel switch and the second travel switch respectively.
Compared with the prior art, the utility model outstanding and profitable technological effect is: the normally closed contact of the first travel switch is connected with the second coil (holding coil) in parallel and then connected in series in the loop of the first coil, so that the normally closed contact of the first travel switch can be in short circuit with the second coil when the first travel switch is started, the voltage of a starting power supply is directly loaded at two ends of the first coil, and after the movable contact and the static contact are sucked under the movable iron core of the first coil (starting coil), the pressing block can press the contact at the beginning of the first travel to separate the normally closed contact, so that the second coil is connected in series in the loop of the first coil, the voltage reduction and current limitation effects are realized, the power of the first coil is reduced, and the heat productivity of the first coil is reduced; and a mechanical switching mode is adopted, so that the reliability is high, the cost is low, the interference is not easy to happen, and the long-term stable operation in a high-pressure environment is facilitated.
Drawings
Fig. 1 is a perspective view of the overall structure of the present invention;
fig. 2 is another perspective view of the overall structure of the present invention;
FIG. 3 is a front view of the overall structure of the present invention;
fig. 4 is a schematic view of the internal structure of the present invention;
fig. 5 is a schematic diagram of the coil attracting control principle of the present invention.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
Referring to fig. 1 to 4, an electromagnetic contactor includes an electromagnetic contactor main body 10 including a base 11, a base side plate 12, and a main body side plate 13; a contact assembly 20, located inside the electromagnetic contactor body 10, including a movable contact 22 and a stationary contact 21; the electromagnetic contactor also comprises a movable contact leading-out end 24 and a fixed contact leading-out end 23 which are fixedly arranged on the electromagnetic contactor main body 10, and the movable contact 22 is connected with the movable contact 22 leading-out end through a flexible conductive material 25. Preferably, the flexible conductive material is a braided copper strip, one end of the braided copper strip is connected with the movable contact, and the other end of the braided copper strip is connected with the leading-out end 24 of the movable contact.
Also comprises
The contact attraction assembly 30 comprises a first coil 31, a second coil 32 and a movable assembly 33, wherein the movable assembly 33 comprises a movable iron core 331, a swing arm 332, a pressure spring 334 and a contact fixing seat 336, the first coil 31 and the second coil 32 are fixedly arranged on a base 11, the contact assembly 20 and the contact attraction assembly 30 are shielded by a base side plate 12 and a main body side plate 13, the movable iron core 331 is positioned above the first coil 31, the lower end of the movable iron core 331 enters the middle part of the first coil 31, the upper end of the movable iron core is hinged with one end of the swing arm 332, the other end of the swing arm 332 is hinged with the electromagnetic contactor main body 10 through a hinge shaft 333, one end of the contact fixing seat 336 is fixedly arranged on the swing arm 332, and the movable contact 22 is fixedly arranged at the other end of; when the first coil 31 is powered to move the movable iron core 331 downward, the swing arm 332 and the contact fixing seat 336 can be driven to swing, so that the movable contact 22 is slapped on the fixed contact 21; the pressure spring 334 is sleeved outside the movable iron core 331, the lower end of the pressure spring 334 is in contact with the upper end of the first coil 31, and the upper end of the pressure spring is in contact with a spring seat fixedly arranged on the movable iron core 331, so that the movable iron core 331 moves upwards under the action of the pressure spring 334 after the first coil is powered off, the swing arm is pushed upwards, the movable contact 22 is separated from the static contact 21, and the switching between the closing and the opening of the electromagnetic contactor is realized.
A coil attraction control assembly 50 including a first travel switch 51; a pressing block 335 is fixedly arranged on the movable iron core 331, and after the movable iron core 331 moves downwards for a set distance, the pressing block 335 presses a contact of the first travel switch 51 to connect the second coil 32 in series in a loop of the first coil 31; specifically, referring to fig. 5, the first coil 31 and the second coil 32 are separated and arranged side by side, which is beneficial to heat dissipation of the coils; the normally closed contact SQ1 of the first travel switch is connected with the second coil 32 in parallel and then connected in series in the loop of the first coil 31, so that the normally closed contact of the first travel switch can short-circuit the second coil when starting, the voltage of a starting power supply is directly loaded at two ends of the first coil, and after the movable iron core of the first coil (starting coil) sucks the movable contact and the static contact down, the pressing block can press down the contact at the beginning of the first travel to separate the normally closed contact, so that the second coil is connected in series in the loop of the first coil, the voltage reduction and current limitation effects are realized, the power of the first coil is reduced, and the heating value of the first coil is reduced; and a mechanical switching mode is adopted, so that the reliability is high, the cost is low, the interference is not easy to happen, and the long-term stable operation in a high-pressure environment is facilitated.
Further preferably, the movable iron core further comprises a second travel switch 52, the first travel switch 51 and the second travel switch 52 are symmetrically arranged on two sides of the movable iron core 331, and two pressing blocks 335 are symmetrically arranged and respectively correspond to the first travel switch 51 and the second travel switch 52; specifically, in the process of moving the plunger 331 downward, the two pressing blocks 335 can simultaneously contact the contact 511 of the first travel switch 51 and the contact 521 of the second travel switch 52 and press the contacts downward, so as to switch on or off the contacts inside the first travel switch 51 and the second travel switch 52. It should be noted that the second travel switch 52 is used to connect with the communication interface 53, and after the movable contact and the fixed contact are closed to the designated positions, the contacts inside the second travel switch 52 are triggered, so as to satisfy the transmission of signals, and then the signals can be fed back through the communication interface 53 and the external control system.
And the arc extinguishing assembly 40, wherein the arc extinguishing assembly 40 comprises an arc extinguishing cover 41, and the arc extinguishing cover 41 is covered outside the movable contact 22 and the fixed contact 21. The arc extinguishing assembly 40 further comprises an arc striking assembly 42, the arc striking assembly 42 comprises an arc striking coil 421 and magnetic flux plates 422 symmetrically arranged on two sides of the contact assembly 20, a magnetic conductive column 4211 penetrates through the middle of the arc striking coil 421, the magnetic flux plates 422 are respectively in contact with two end surfaces of the magnetic conductive column 4211, and the magnetic flux plates 422 are located in the electromagnetic contactor main body 10 and attached to the outer surface of the arc extinguishing cover 41. Preferably, the wire diameter of the arc striking coil 421 is increased from Φ 1.8 to Φ 2.0, so as to increase the magnetic flux, and the magnetic flux plate further extends above and below the contact assembly, for example, the magnetic flux plate is increased to 50mm on the basis of the existing magnetic flux plate, so that the arc is more easily introduced into the arc extinguishing chamber, and the problem that the existing electromagnetic contactor cannot normally draw the arc or draw the arc unstably is solved.
Further preferably, the arc welding device further comprises a first arc ignition plate 451 and a second arc ignition plate 452; the first arc-striking plate 451 is positioned above the moving contact 22, the front end of the first arc-striking plate is close to the moving contact 22, and the rear end of the first arc-striking plate extends into the arc-striking cover 41; the second arc-striking plate 452 is located above the stationary contact 21, and the front end of the second arc-striking plate is close to the stationary contact 21, and the rear end of the second arc-striking plate extends into the arc-striking cover 41. The first arc striking plate and the second arc striking plate are added to further enhance the arc striking effect, so that the arc extinguishing speed is higher.
After the arc-extinguishing cover is used for a period of time, comparatively obvious damage can appear in the place that electric arc is comparatively concentrated in the arc-extinguishing cover to influence arc extinguishing effect, but inside other components and parts of electromagnetic contactor are still intact this moment, do not reach life, so if directly carry out the complete machine and change the cost too high, but continue to use and will have the risk, for this application further preferred arc-extinguishing cover 41 set firmly in through a quick detach subassembly 46 detachable on the electromagnetic contactor main part 10. Specifically, the quick release assembly 46 includes a clamping portion 462 fixedly disposed on the electromagnetic contactor body 10, and a clamping piece 461 connected to the arc extinguishing cover 41, where the clamping piece 461 has a clamping portion 4611 bent or protruded toward the clamping portion 462, and after the arc extinguishing cover 41 is pressed against the upper end surface of the electromagnetic contactor body 10, the clamping portion 4611 is clamped on the clamping portion 462; the locking portion 4611 is provided with a handle 46111 on a side away from the locking portion 462, and the locking portion 462 can be separated from the locking portion 4611 by applying an external force to the handle 46111. A spring 464 is in contact with the side surface of the clamping piece, which is far away from one end 4612 of the clamping portion, a supporting pillar 463 is arranged between the spring 464 and the clamping portion 462, the clamping piece 461 rotates around the supporting pillar 463, and the spring 464 always exerts a biasing force on the clamping piece 461, and the biasing force enables the clamping portion 4611 to be clamped on the clamping portion 462. With arc-extinguishing chamber 41 set firmly in the electromagnetic contactor main part through a quick detach subassembly 46 detachable, just so can make electromagnetic contactor can continue good operation through the mode of quick replacement arc-extinguishing chamber when arc-extinguishing chamber 41 damages, avoid current electromagnetic contactor arc-extinguishing chamber integral design, be unfavorable for the maintenance, the problem that the maintenance cost is high is led to maintaining to the overall change of arc-extinguishing chamber goes wrong.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (5)
1. A novel electromagnetic contactor control device is used for controlling a contact actuation assembly, wherein the contact actuation assembly comprises a first coil, a second coil and a movable assembly; the method is characterized in that: comprises that
The coil suction control assembly comprises a first travel switch; the normally closed contact of the first travel switch is connected with the second coil in parallel and then connected in series in a loop of the first coil; after the contact of the first travel switch can be squeezed when the first coil is electrified to drive the movable assembly to act, the second coil is connected in series in a loop of the first coil.
2. The novel electromagnetic contactor control device according to claim 1, characterized in that: the movable assembly can simultaneously press or release the contacts of the first travel switch and the second travel switch.
3. The novel electromagnetic contactor control device according to claim 1, characterized in that: the two power line leading-out ends of the first coil and the second coil which are connected in series are also connected in parallel by a voltage dependent resistor and a capacitor.
4. The novel electromagnetic contactor control device according to claim 1, characterized in that: the movable assembly comprises a movable iron core, and a pressing block is fixedly arranged on the movable iron core; after the movable iron core moves downwards for a set distance, the pressing block can press the contact of the first travel switch, so that the normally closed contact of the first travel switch is disconnected.
5. The novel electromagnetic contactor control device according to claim 4, characterized in that: the first travel switch and the second travel switch are symmetrically arranged on two sides of the movable iron core, the movable iron core is symmetrically provided with two press blocks, and each press block corresponds to the first travel switch and the second travel switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020045371.2U CN211788828U (en) | 2020-01-09 | 2020-01-09 | Novel electromagnetic contactor control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020045371.2U CN211788828U (en) | 2020-01-09 | 2020-01-09 | Novel electromagnetic contactor control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211788828U true CN211788828U (en) | 2020-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020045371.2U Expired - Fee Related CN211788828U (en) | 2020-01-09 | 2020-01-09 | Novel electromagnetic contactor control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211788828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360061A (en) * | 2022-09-26 | 2022-11-18 | 北京天创凯睿科技有限公司 | Self-holding electromagnetic contactor and electric control system of fighter |
-
2020
- 2020-01-09 CN CN202020045371.2U patent/CN211788828U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360061A (en) * | 2022-09-26 | 2022-11-18 | 北京天创凯睿科技有限公司 | Self-holding electromagnetic contactor and electric control system of fighter |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 |