CN209830554U - Automatic power-off and power-transmission device of alternating current welding machine - Google Patents
Automatic power-off and power-transmission device of alternating current welding machine Download PDFInfo
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- CN209830554U CN209830554U CN201821683692.4U CN201821683692U CN209830554U CN 209830554 U CN209830554 U CN 209830554U CN 201821683692 U CN201821683692 U CN 201821683692U CN 209830554 U CN209830554 U CN 209830554U
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Abstract
The utility model discloses an automatic power-off and power transmission device of an alternating current welding machine, which relates to the field of alternating current welding machine control and comprises an alternating current welding machine, a welding handle electrically connected with the alternating current welding machine and a voltage detector, wherein the welding handle is electrically connected with the input end of the alternating current welding machine through a starting switch; the utility model relates to a rationally, can realize alternating current welding machine's auto-power-off and power transmission, ensure alternating current welding machine's normal work, safe energy-conservation has the necessity of advocating.
Description
Technical Field
The utility model relates to a technical field of electric welding power-saving control, specific alternating current welding machine auto-power-off power transmission device that says so.
Background
The original alternating current welding machine needs to be switched on and powered on when in use, and needs to be switched off and powered off after the use is finished. When the welding position is far away from the welding machine, the power supply and power failure work is complicated, so that the alternating current welding machine always supplies power after workers are dried on a workshop, the welding wire is always electrified, the potential fire hazard is easily caused, a large amount of electric energy is wasted, the energy-saving and safe production is not facilitated, and the service life of the alternating current welding machine is influenced due to the fact that the alternating current welding machine is electrified and does not carry out idle running for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an alternating current welding machine auto-power-off power transmission device is provided, according to the circuit control device of the safety of the operating condition auto-power-off of alternating current welding machine, power transmission, economize on electricity.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model discloses an AC electric welding, with the electric weld handle and the voltage detector of being connected of AC electric welding, the weld handle is connected through starting switch and AC electric welding's input electricity, AC electric welding's output is connected with voltage detector's input electricity, voltage detector's output passes through power control circuit and is connected with AC electric welding's input electricity.
The utility model discloses a further improvement lies in: the starting switch is an infrared induction switch.
The utility model discloses a further improvement lies in: the power control circuit includes contactor and relay, the contactor includes contactor coil and contactor normally open contact, the relay includes relay coil and relay normally closed contact, the relay coil is connected with the voltage detection appearance electricity, relay normally closed contact is connected with the contactor coil electricity, contactor normally open contact's one end is connected with the power electricity, and the other end is connected with the AC welding machine input electricity, through the switch-on or the disconnection of the self-locking circuit control power supply that relay coil, relay normally closed contact, contactor coil and contactor normally open contact constitute and AC welding machine input.
Since the technical scheme is used, the utility model discloses the beneficial effect who gains is:
the utility model relates to an electricity-saving control device of alternating current welding machine auto-power-off, power transmission guarantees that alternating current welding machine gets electric in welding process, the no-load process outage. When the distance between the alternating current welding machine and the welding position is far, the trouble caused by power failure and power transmission of the alternating current welding machine can be avoided, the risk of safety accidents caused by the fact that the alternating current welding machine is not powered on after being normally used is reduced, and meanwhile, the electric energy loss caused by long-term no-load operation of the alternating current welding machine is avoided.
The voltage monitor is a statistical voltage monitor which continuously monitors and counts voltage deviation caused by slow change of a normal operation state of a power system. The system has the functions of monitoring, analyzing, memorizing, inquiring, parameter setting and the like. The device adopts circuit control, and when welding is realized, the inductive switch on the welding handle realizes whether the welding handle is connected with the alternating current welding machine or not, so as to control whether the alternating current welding machine 2 works or not; the voltage detector controls the power supply control circuit to switch on the power supply to supply power for the alternating current welding machine through the detected voltage value; when the welding is stopped, the voltage detector controls the power supply control circuit to cut off the power supply through the detected voltage vertically so as to cut off the power supply for the switching off of the alternating current welding machine.
The device can realize automatic power off and power transmission of the alternating current welding machine, prolong the service life of the alternating current welding machine, not only is beneficial to energy conservation, but also is beneficial to safety production. The utility model discloses job stabilization is reliable, the fault rate is low, and energy-conserving effect is showing, does not have any requirement to alternating current welding machine type, capacity size, welding condition, distance far and near.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a working schematic diagram of the power control circuit of the present invention.
Wherein, 1, welding a handle; 2. an alternating current welding machine; 3. a voltage detector; 4. a power supply control circuit.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
an automatic power-off and power-on device of an alternating current welding machine is shown in a figure 1 and comprises an alternating current welding machine 2, a welding handle 1 and a voltage detector 3, wherein the welding handle 1 is electrically connected with the alternating current welding machine 2. The electric welding machine is a special transformer, the voltage drop is large when the electric welding machine is connected with a load, at the moment when the welding rod is lifted, the voltage between the welding rod and a weldment is generally 60-70V, the temperature of an arc discharge part reaches more than 2000K, the welding rod and the weldment are melted, the welding is realized, the voltage drop of the end point of the welding rod and the weldment is about 30V, the voltage value detected by the voltage detector 3 is more than 70V, and the power supply control circuit is controlled to be connected with the power supply to cut off the power supply of the alternating current electric welding machine 2.
The welding handle 1 is electrically connected with the input end of the alternating current welding machine 2 through a starting switch, the starting switch is an infrared induction switch, the welding handle 1 is held by a hand and does not leave the induction range of the infrared induction switch, the infrared induction switch is continuously connected, and the alternating current welding machine 2 and the welding handle 1 are in a connected state; when the hand leaves the welding handle 1 and does not act in the induction area for a long time, the starting switch is automatically turned off in a delayed mode and is disconnected with the alternating current welding machine 2. Guarantee 2 course of working of alternating current welding machine, weld handle 1 and be in all the time with the electric connection of alternating current welding machine 2, alternating current welding machine 2 is in the state of being electrified, breaks away from when the hand welds handle 1, and when alternating current welding machine 2 was in standby state, the long time does not have the action in starting switch's the induction area, and starting switch automatic delay is closed, and alternating current welding machine 2 and weld between the handle 1 outage, alternating current welding machine 2 stop work.
The voltage monitor 3 is a statistical voltage monitor that continuously monitors and counts voltage deviations caused by slow changes in the normal operating state of the power system. The system has the functions of monitoring, analyzing, memorizing, inquiring, parameter setting and the like. The voltage detector 3 can detect the output voltage value of the alternating current welding machine 2, and controls the on-off of the alternating current welding machine 2 through the power supply control circuit 4 according to the voltage value, so that the function of automatically switching on and off the power supply and the alternating current welding machine 2 is realized.
The output end of the alternating current welding machine 2 is electrically connected with the input end of the voltage detector 3, the voltage detector 3 can detect the voltage value of the output end of the alternating current welding machine 2 at any time, and the output end of the voltage detector 3 is electrically connected with the input end of the alternating current welding machine 2 through the power supply control circuit 4. And the voltage detector 3 controls the power supply control circuit 4 to be connected with or disconnected from the alternating current welding machine 2 according to the detected voltage value.
As shown in fig. 2, power control circuit 4 is a control circuit, control circuit includes contactor and relay, the contactor includes contactor normally open contact and contactor coil, the relay includes relay coil and relay normally closed contact, relay coil and voltage detector 3 parallel connection are connected, relay normally closed contact and contactor coil series connection are connected, and contactor normally open contact's one end is connected with the power electricity, and the other end is connected with ac welding machine 2's input electricity, through the switch-on or the disconnection of self-locking circuit contactor normally open contact control power.
The self-locking circuit that relay coil, relay normally closed contact, contactor coil and contactor normally open contact that set up in power control circuit 4 constitute, its theory of operation is as follows: when the voltage detector 3 detects that the voltage at the output end of the alternating current electric welding machine 2 is larger than 70V, the normally closed contact of the relay in the power supply control circuit 4 is disconnected, and the normally open contact of the contactor coil power-off contactor is disconnected; when the voltage value of the output end of the alternating current welding machine 2 is measured by the voltage detector 3 to be below 70V, the relay coil loses power, the normally closed contact of the relay in the power control circuit 4 is closed, the contactor coil is electrified, and the normally open contact of the contactor is closed.
When the alternating current electric welding machine 2 works, the voltage at the output end is about 70 volts of alternating current, when the alternating current electric welding machine is welded, the voltage can be reduced to about 35 volts of alternating current, two states are obtained through the voltage value measured by the voltage detector 3, the output voltage of the alternating current electric welding machine is higher than 70V, when the alternating current electric welding machine is not welded, the output voltage is high voltage, at the moment, the voltage detector 3 controls the relay K coil to be electrified, the relay K normally closed contact in the power control circuit 4 is disconnected, the contactor KM coil is powered off, the contactor KM normally open contact is disconnected, and the; when the voltage detector 3 detects that the output voltage of the alternating current welding machine 2 is lower than 70V, the output is low voltage, at the moment, the voltage detector 3 controls the relay K coil to be powered off, the relay K normally closed contact is closed, the contactor KM coil is powered on, the contactor KM normally open contact is closed, the power supply supplies power to the alternating current welding machine 2, and the normal work of the alternating current welding machine 2 is realized.
The output end of the alternating current welding machine 2 is electrically connected with the voltage detector 3, when the voltage detector 3 detects that the output voltage of the alternating current welding machine 2 is below 70V and the welding handle 1 is welded, the voltage detector 3 transmits the detection information to the power control circuit 4 to control the power supply to be connected with the input end of the alternating current welding machine 2 to supply power to the alternating current welding machine 2, and the welding handle 7 realizes full-voltage welding; when the voltage detector 3 detects that the output end of the alternating current electric welding machine 2 is higher than 70V and the welding handle 7 stops welding, the voltage detector 3 transmits the signal to the power supply control circuit 4 to control the power supply to be disconnected, so that the output end of the power supply control circuit 4 and the input end of the alternating current electric welding machine 2 form a broken circuit to power off the alternating current electric welding machine 2. All the processes are automatically controlled.
Therefore, the starting switch automatically controls the connection and disconnection of the welding handle 1 and the alternating current welding machine 2, whether the alternating current welding machine 2 works is controlled, the voltage detector 3 can control the working state of the alternating current welding machine 2 according to the detected voltage value of the output end of the alternating current welding machine 2, and the relay K normally closed contact is controlled to be connected and disconnected through the detected working state, so that the power-on and power-off of the coil of the contactor KM are controlled, the power-off and power-transmission of the alternating current welding machine 2 are controlled through the contactor KM normally open contact, and the automatic power-off and power-transmission energy-saving control.
The voltage detector 3 and the power control circuit 4 can be arranged inside the alternating current welding machine 2 or outside the alternating current welding machine 2, and can realize the functions of automatic power off and power transmission.
Claims (3)
1. The utility model provides an alternating current welding machine auto-power-off power transmission device which characterized in that: it includes alternating current welding machine (2), welds handle (1) and voltage detection appearance (3) with alternating current welding machine (2) electricity is connected, it is connected with the input electricity of alternating current welding machine (2) through starting switch to weld handle (1), the output of alternating current welding machine (2) is connected with the input electricity of voltage detection appearance (3), the output of voltage detection appearance (3) passes through power control circuit (4) and is connected with the input electricity of alternating current welding machine (2).
2. The automatic power-off and power-on device of the alternating current welding machine as claimed in claim 1, wherein the starting switch is an infrared induction switch.
3. The automatic power-off and power-on device of the alternating current welding machine according to claim 2, wherein: power control circuit (4) include contactor and relay normally closed contact, the contactor includes contactor coil and contactor normally open contact, the relay includes relay coil and relay normally closed contact, the relay coil is connected with voltage detector (3) electricity, relay normally closed contact is connected with contactor coil electricity, contactor normally open contact's one end is connected with the power electricity, and the other end is connected with the input electricity of AC welding machine (2), through the switch-on or the disconnection of the self-locking circuit control power that relay coil, relay normally closed contact, contactor coil and contactor normally open contact constitute and AC welding machine (2) input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821683692.4U CN209830554U (en) | 2018-10-17 | 2018-10-17 | Automatic power-off and power-transmission device of alternating current welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821683692.4U CN209830554U (en) | 2018-10-17 | 2018-10-17 | Automatic power-off and power-transmission device of alternating current welding machine |
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| CN209830554U true CN209830554U (en) | 2019-12-24 |
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| CN201821683692.4U Active CN209830554U (en) | 2018-10-17 | 2018-10-17 | Automatic power-off and power-transmission device of alternating current welding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985872A (en) * | 2022-05-31 | 2022-09-02 | 中铁隧道局集团建设有限公司 | AC arc welding machine and one-time end power-off protection device thereof |
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2018
- 2018-10-17 CN CN201821683692.4U patent/CN209830554U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985872A (en) * | 2022-05-31 | 2022-09-02 | 中铁隧道局集团建设有限公司 | AC arc welding machine and one-time end power-off protection device thereof |
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