CN114985872A - AC arc welding machine and one-time end power-off protection device thereof - Google Patents
AC arc welding machine and one-time end power-off protection device thereof Download PDFInfo
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- CN114985872A CN114985872A CN202210607822.0A CN202210607822A CN114985872A CN 114985872 A CN114985872 A CN 114985872A CN 202210607822 A CN202210607822 A CN 202210607822A CN 114985872 A CN114985872 A CN 114985872A
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- alternating current
- input end
- welding machine
- contactor
- arc welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/321—Protecting means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
The invention discloses a primary end power-off protection device of an alternating current arc welding machine, which comprises: the input end of one main contact of the alternating current contactor is directly connected with alternating current, and the output ends of the two main contacts are respectively used for being connected with the input end of an arc welding machine; the alternating current contactor comprises an alternating current transformer, one voltage input end of the alternating current transformer is directly connected with alternating current, the other voltage input end of the alternating current transformer is connected with one main contact input end of the alternating current contactor in parallel and then connected with the alternating current, two voltage output ends of the alternating current transformer are respectively connected with a normally open auxiliary contact input end and a normally open auxiliary contact output end of the alternating current contactor, and a start-stop switch is connected between the two voltage output ends in series. The invention has the advantages that a secondary control loop is formed, and the on-off of the primary end of the alternating current arc welding machine is realized by switching on or off the on-off switch, so that the operation safety is improved.
Description
Technical Field
The invention relates to the technical field of protection of alternating current arc welding machines. More particularly, the invention relates to a primary end power-off protection device of an alternating current arc welding machine and the alternating current arc welding machine.
Background
In engineering construction, the welding operation of the alternating-current arc welding machine is widely applied, and the working principle is as follows: and large current is obtained through voltage transformation, and the welding material is instantly melted on the welded workpiece according to the heat effect of the current. The method is characterized by mainly comprising the following steps: the application is wide, the operation is frequent, but the operation power consumption is large. When a welding worker operates or works in a gap, the alternating-current arc welding machine generally operates in a live mode, and the potential electric shock hazard caused by misjudgment, misoperation and other actions exists in the working worker; after the welding operation is finished, the power supply is not turned off in time, so that power resources are lost, and the construction and production cost is greatly increased.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a primary side power-off protection device of an ac arc welder, comprising:
the input end of one main contact of the alternating current contactor is directly connected with alternating current, and the output ends of the two main contacts are respectively used for being connected with the input end of an arc welding machine;
the alternating current contactor comprises an alternating current transformer, one voltage input end of the alternating current transformer is directly connected with alternating current, the other voltage input end of the alternating current transformer is connected with one main contact input end of the alternating current contactor in parallel and then connected with the alternating current, two voltage output ends of the alternating current transformer are respectively connected with a normally open auxiliary contact input end and a normally open auxiliary contact output end of the alternating current contactor, and a start-stop switch is connected between the two voltage output ends in series.
Preferably, the input voltage of the ac transformer is 220V, and the output voltage thereof is 24V.
Preferably, the fuse-type switch is connected between the main contact input end of the alternating current contactor and the alternating current in series.
Preferably, two main contact input ends of the alternating current contactor are respectively connected to two live wires of alternating current, and the other voltage input end of the alternating current transformer is connected to a zero wire of the alternating current.
An ac arc welder is provided comprising:
the primary end power-off protection device of the alternating current arc welding machine;
and the input end of the arc welding machine body is connected with the main contact output end of the alternating current contactor.
Preferably, the start-stop switch is a button switch, the start-stop switch is arranged on a welding tongs of the arc welding machine body, and the button switch is switched on when pressed by external force and switched off when not pressed by external force.
Preferably, the arc welding machine further comprises an installation box which is arranged on the side wall of the shell of the arc welding machine body, and the alternating current contactor and the alternating current transformer are arranged in the installation box.
Preferably, the power supply further comprises a soft packing tube, and the soft packing tube is sleeved outside an electric wire connected between the start-stop switch and the alternating current transformation.
The invention at least comprises the following beneficial effects: the invention forms a secondary control loop by arranging the alternating current contactor, the alternating current transformer and the start-stop switch, realizes the on-off of the primary end of the alternating current arc welding machine by switching on or off the start-stop switch, and ensures the operation safety by selecting the 24V safety voltage as the voltage provided by the alternating current transformer. The electric shock safety hidden trouble in the use process of the alternating current arc welding machine is reduced, the safety performance of the alternating current arc welding machine is improved, the electric shock safety risk caused by misoperation of workers is reduced, and the construction safety management level is improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic circuit diagram of the power-off protection device according to one embodiment of the present invention;
fig. 2 is a schematic connection diagram of the ac arc welder according to one embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in FIGS. 1-2, the present invention provides a primary power-off protection device for an AC arc welding machine, comprising:
the alternating current contactor 1 is characterized in that one main contact input end of the alternating current contactor is directly connected with alternating current, and two main contact output ends are respectively used for being connected with the input end of an arc welding machine 6;
the alternating current contactor comprises an alternating current transformer 2, one voltage input end of the alternating current transformer is directly connected with alternating current, the other voltage input end of the alternating current transformer is electrically connected with alternating current after being connected with a main contact input end of an alternating current contactor 1 in parallel, two voltage output ends of the alternating current transformer 2 are respectively connected with a normally open auxiliary contact input end and a normally open auxiliary contact output end of the alternating current contactor 1, and a start-stop switch 3 is connected between the two voltage output ends in series.
In the technical scheme, the secondary control loop is formed by arranging the alternating current contactor 1, the alternating current transformer 2 and the start-stop switch 3, the power on/off of the primary end of the alternating current arc welding machine 6 is realized by switching on or switching off the start-stop switch 3, and the voltage provided by the alternating current transformer 2 can be 24V safe voltage, so that the operation safety is ensured.
When the power-off protection device is connected to the alternating current arc welding machine 6, the operation flow is as follows: after the AC is connected, an operator presses the start-stop switch 3 (connected) to control the secondary circuit to be electrified to attract the AC contactor 1, and the AC arc welding machine 6 is electrified to carry out welding operation. At the working gaps of adjusting stations, welding pieces, replacing welding materials, having a rest midway and the like, the operation workers loosen the start-stop switch 3 (turn off), the alternating current contactor 1 is powered off and disconnected, the alternating current arc welding machine 6 is powered off, and the alternating current arc welding machine 6 is in a disconnected and stopped state, so that the power loss and potential safety hazards in a standby state are thoroughly eliminated. And after the operation is finished, the working power supply is timely turned off.
In another technical scheme, the input voltage of the alternating current transformer 2 is 220V, and the output voltage is 24V. And 24V is a safe voltage, so that potential safety hazards can be eliminated.
In another technical scheme, the device further comprises a fuse switch 8 which is connected in series between the main contact input end of the alternating current contactor 1 and the alternating current. When the barrier appears or the short circuit occurs, the fuse switch 8 is arranged to automatically cut off the power in time, and the safety performance is improved.
In another technical scheme, two main contact input ends of the alternating current contactor 1 are respectively connected to two live wires of alternating current, and the other voltage input end of the alternating current transformer 2 is connected to a zero line of the alternating current. The specific wiring mode with alternating current is provided, wiring is simple and easy to operate, and the whole power-off protection device is reliable and safe to operate.
An ac arc welder is provided comprising:
the primary end power-off protection device of the alternating current arc welding machine;
and the input end of the arc welding machine body is connected with the main contact output end of the alternating current contactor 1.
In the above technical scheme, an arc welding machine with a power-off protection device is provided, and the action flow is as follows: after the AC is connected, an operator presses the start-stop switch 3 (connected) to control the secondary circuit to be electrified to close the AC contactor 1, and the AC arc welder 6 is electrified immediately to carry out welding operation. At the working gaps of adjusting stations, welding pieces, replacing welding materials, having a rest midway and the like, the operation workers loosen the start-stop switch 3 (turn off), the alternating current contactor 1 is powered off and disconnected, the alternating current arc welding machine 6 is powered off, and the alternating current arc welding machine 6 is in a disconnected and stopped state, so that the power loss and potential safety hazards in a standby state are thoroughly eliminated. And after the operation is finished, the working power supply is timely turned off.
In another technical scheme, the start-stop switch 3 is a button switch, the start-stop switch 3 is arranged on a welding tongs 4 of the arc welding machine body, and the button switch is switched on when pressed by external force and switched off when not pressed by external force.
In the technical scheme, the start-stop switch 3 is arranged on the welding tongs 4, so that an operator can conveniently control the start-stop switch 3. Adopt push-button switch, connect when keeping being pressed and pass through, when not pressing, then break off, can avoid when the pause operation, forget to break off and open and stop switch 3, and the unnecessary potential safety hazard that causes can further promote the security.
Compared with the traditional alternating current arc welding machine, the safety performance is greatly improved. Under the non-working condition, the power supply of the primary end (main circuit) of the AC arc welding machine 6 is cut off, so that the AC arc welding machine 6 is in a cut-off state, and the method is safe and reliable.
When the operation is not needed, the AC arc welding machine 6 is in a complete power-off state, so that the utilization rate of the AC arc welding machine 6 is greatly improved, and the service life is effectively prolonged; meanwhile, abnormal damage of the alternating current arc welding machine 6 caused by misoperation of workers is avoided, and the maintenance cost is saved.
In another technical scheme, the arc welding machine further comprises an installation box 5 which is arranged on the side wall of the shell of the arc welding machine body, and the alternating current contactor 1 and the alternating current transformer 2 are arranged in the installation box 5. Because ac contactor 1 and ac transformer 2 all belong to the power consumption product, adopt install bin 5 to protect, have dustproof dampproofing effect.
In another technical scheme, the device further comprises a soft packing tube 7, and the soft packing tube 7 is sleeved outside an electric wire connected between the start-stop switch 3 and the alternating current transformer. Because the electric wire is many, when the welding action, the electric wire that needs is also long, so set up soft packaging tube 7, accomodate the electric wire together, can avoid the electric wire to be mixed and disorderly, also have the effect of protection electric wire moreover.
As shown in fig. 1, L1 and L2 represent two live lines of alternating current, N represents a neutral line of alternating current, and 3 KM1 represent internal circuits and connection terminals of the same alternating current contactor.
Example (b): the welding operation is carried out by adopting the alternating current arc welding machine before the transformation and the alternating current arc welding machine of the invention, and the operation conditions are shown in the table 1:
TABLE 1 test results
As shown in table 1, by comparing with the conventional ac arc welding machine, 1 shift is used as the test duration, the average power consumption of the conventional ac arc welding machine is 114.3KW · h, the average power consumption of the protection device is 93KW · h, 21.3KW · h is saved, 21.3/8 is saved by 2.67KW · h/h per hour, and the energy consumption is saved by 21.3/114.3 by 18.6%. According to the method, 30 machine shifts are used by 1 AC arc welding machine every month, the electric quantity is saved by 21.3 multiplied by 30 as 639 KW.h every month, the electricity price is calculated according to 0.8 yuan/KW.h, and the cost can be saved by 639 multiplied by 0.8 as 511.2 yuan/month/station. Taking 30 ac arc welding machines as an example, the cost can be saved by 511.2 × 30 × 12 ═ 184032 yuan each year.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. An end power-off protection device of an alternating current arc welding machine, which is characterized by comprising:
the input end of one main contact of the alternating current contactor is directly connected with alternating current, and the output ends of the two main contacts are respectively used for being connected with the input end of an arc welding machine;
the alternating current contactor comprises an alternating current transformer, one voltage input end of the alternating current transformer is directly connected with alternating current, the other voltage input end of the alternating current transformer is connected with one main contact input end of the alternating current contactor in parallel and then connected with the alternating current, two voltage output ends of the alternating current transformer are respectively connected with a normally open auxiliary contact input end and a normally open auxiliary contact output end of the alternating current contactor, and a start-stop switch is connected between the two voltage output ends in series.
2. The primary side power-off protection device of an ac arc welder as claimed in claim 1, wherein the input voltage of said ac transformer is 220V and the output voltage is 24V.
3. The primary side power-off protection device of an ac arc welder as claimed in claim 1, further comprising a fusible switch connected in series between the main contact input terminal of the ac contactor and the ac power.
4. A primary side power-off protection arrangement for an ac arc welder as defined in claim 1, wherein said ac contactor has two main contact inputs connected to two live lines of ac power, and the other voltage input of said ac transformer is connected to a neutral line of ac power.
5. An alternating current arc welder, comprising:
the primary power-off protection device of the AC arc welder as set forth in any one of claims 1 to 4;
and the input end of the arc welding machine body is connected with the main contact output end of the alternating current contactor.
6. An AC arc welder as set forth in claim 5, characterized in that said start/stop switch is a push button switch, said start/stop switch is disposed on a welding jaw of said arc welder body, said push button switch is turned on when pressed by external force and turned off when not pressed by external force.
7. An AC arc welder according to claim 5, further comprising a mounting box disposed on a side wall of said arc welder body housing, said AC contactor and said AC transformer being disposed within said mounting box.
8. The ac arc welder according to claim 7, further comprising a flexible hose sheathed outside the wire connecting said start-stop switch and said ac transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607822.0A CN114985872A (en) | 2022-05-31 | 2022-05-31 | AC arc welding machine and one-time end power-off protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607822.0A CN114985872A (en) | 2022-05-31 | 2022-05-31 | AC arc welding machine and one-time end power-off protection device thereof |
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| Publication Number | Publication Date |
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| CN114985872A true CN114985872A (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210607822.0A Pending CN114985872A (en) | 2022-05-31 | 2022-05-31 | AC arc welding machine and one-time end power-off protection device thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357874Y (en) * | 1998-10-28 | 2000-01-12 | 徐云亭 | Fase energy-saving controller for A. C. electric welding machine |
| CN2523546Y (en) * | 2001-12-17 | 2002-12-04 | 牛凤芹 | Triggering button of electrode holders and accessories |
| CN2726782Y (en) * | 2004-09-24 | 2005-09-21 | 许庆荣 | Transformer type anti-electric shock device for arc welding machine |
| CN203667737U (en) * | 2014-01-13 | 2014-06-25 | 邢台亚泰重工机械有限公司 | Lift control circuit |
| CN209830554U (en) * | 2018-10-17 | 2019-12-24 | 新兴铸管股份有限公司 | Automatic power-off and power-transmission device of alternating current welding machine |
| CN209867633U (en) * | 2018-12-08 | 2019-12-31 | 郑州工业应用技术学院 | Electricity saver for electric welder |
-
2022
- 2022-05-31 CN CN202210607822.0A patent/CN114985872A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357874Y (en) * | 1998-10-28 | 2000-01-12 | 徐云亭 | Fase energy-saving controller for A. C. electric welding machine |
| CN2523546Y (en) * | 2001-12-17 | 2002-12-04 | 牛凤芹 | Triggering button of electrode holders and accessories |
| CN2726782Y (en) * | 2004-09-24 | 2005-09-21 | 许庆荣 | Transformer type anti-electric shock device for arc welding machine |
| CN203667737U (en) * | 2014-01-13 | 2014-06-25 | 邢台亚泰重工机械有限公司 | Lift control circuit |
| CN209830554U (en) * | 2018-10-17 | 2019-12-24 | 新兴铸管股份有限公司 | Automatic power-off and power-transmission device of alternating current welding machine |
| CN209867633U (en) * | 2018-12-08 | 2019-12-31 | 郑州工业应用技术学院 | Electricity saver for electric welder |
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