CN2058120U - Electricity-proof kemote-control a.c.welder - Google Patents
Electricity-proof kemote-control a.c.welder Download PDFInfo
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- CN2058120U CN2058120U CN 89205009 CN89205009U CN2058120U CN 2058120 U CN2058120 U CN 2058120U CN 89205009 CN89205009 CN 89205009 CN 89205009 U CN89205009 U CN 89205009U CN 2058120 U CN2058120 U CN 2058120U
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- remote
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Abstract
The utility model discloses an electricity-proof remote-control alternating current welder, belonging to the technical field of electronic electrical engineering and machine. The schematic circuit diagram of the electricity-proof remote-control alternating current welder is displayed in the attached figure 2. A resistor R5 is arranged between output terminals A, B (A is welding tongs, and B is a workpiece to be welded), the resistor is firstly connected parallel with a capacitor C1, and then is connected in series with a crystal diode BG2, so that the circuit of a remote-regulation box (bar) can be formed, and accordingly, the functions of remote control and electricity-proof can be realized only by one current transformer LH or one flow divider FL and a set of control circuits. The utility model has the advantages of reasonable and compact structure, low cost and stable service performance.
Description
What the utility model provided is a kind of remote control protection against electric shock A.C. welder, belongs to electronics, electrician, field of mechanical technique.
Existing electric welding machine, the circuit that adopted are as shown in Figure 1.(A is a soldering turret between output terminals A, B for it, B is a welded piece) string have by resistance R 3 and crystal diode BG, form remote regulating box (rod), motor is housed in electric welding machine when remote regulating, motor drives the screw mandrel rotation that electric welding machine is regulated electric current, and is designed to: when relay J 2 adhesives, motor just changes, then transfer big welding current, when relay J 3 adhesives, welding current is then turned in motor counter-rotating down.After the welding machine turn-on current, if open a way between output terminals A, B, UR1=UR2 then, all not adhesives of J1.J2, motor does not change, uncomfortable economize on electricity stream.Output is connected to the remote regulating box between two ends, and output B links to each other with the negative terminal of crystal diode BG1, when output terminals A links to each other with an end of resistance R 3, positive half cycle at alternating current has electric current to flow through, and inductance coil LH2 is saturated when positive half cycle, makes UR1＞UR2, cause the J2 energising, transfer big welding current.If output terminals A links to each other with the negative terminal of crystal diode BG1, and the negative half period at alternating current when output B end joins with resistance R 3 one ends has electric current to flow through, and inductance L H2 causes relay J 3 energisings at the saturated UR1＜UR2 that makes of negative half period, turn welding current down, realize the remote control of welding machine.Because the existence of resistance R 3 makes loop current less this moment of relay J 1 be failure to actuate, when welding, welding rod and workpiece contacting ignition arc are exported two end A, B and are short-circuited, and electric current is bigger in the loop, the J1 adhesive makes contactor C adhesive, connects the primary return of electric welding machine.Disconnect getting in touch of winding L M and electric welding machine secondary loop simultaneously, electric welding machine breaks away from the protection against electric shock state, enters normal welded condition.As seen, the remote control of welding machine part partly is separate with protection against electric shock.Therefore, must there be two current transformers and corresponding two cover control circuits could realize remote control and two functions of protection against electric shock.
The utility model purpose is only to propose the remote control protection against electric shock A.C. welder formed with a current transformer or current divider and a cover control circuit, can realize two functions of remote control and protection against electric shock equally, and make total simple, reduce manufacturing cost, guarantee that serviceability is extremely stable.
Technical solution of the present utility model: its circuit theory sees shown in the accompanying drawing 2 that it mainly is that string between the output terminals A of circuit, B is had a remote regulating box (rod) circuit, its circuit is in parallel with capacitor C 1 by resistance R 5, be connected in series with crystal diode BG2 then, entire circuit is a remote control protection against electric shock A.C. welder circuit.Its course of work is such.When circuit output end A, B link to each other with the remote regulating box, the B end links to each other with the F end of remote regulating box (rod) circuit again, locates at the end (6) of current transformer LH or current divider FL, induces positive pulse, makes relay J 2 adhesives, and motor just changes, and transfers big welding current.When the F of output terminals A and remote regulating box circuit end links to each other, output B end induces negative pulse with the E end of remote regulating box (rod) the circuit LH that joins again, makes relay J 3 adhesives, and motor reverses, and turns welding current down.During welding, A, B two terminal shortcircuits, transformer LH or current divider FL induce the positive and negative alternating-current pulse that alternately occurs, and make relay J 1 adhesive, and J2, all not adhesives of J3 make electric welding machine enter normal welded condition from the protection against electric shock state.
The lead of output B passes a current transformer LH or links to each other with the secondary end of electric welding machine B1 by a current divider FL, therefore, the utility model has only been used a current transformer or a current divider and a cover control circuit, by discerning positive and negative pulse or alternating impulse, just can finish remote control and electroshock-proof function has been simplified circuit, reduce cost.Owing to join with diode again after the circuit of remote regulating box (rod) has adopted resistance, electric capacity parallel connection.Capacitor wherein can improve control sensitivity significantly.
Accompanying drawing 1 is the circuit theory diagrams of existing product
Accompanying drawing 2 is circuit theory diagrams of the present utility model
B1 in the accompanying drawing is an A.C. welder, and B2 is a control transformer, and LH1, LH2, LH are current transformers, the 10th, and differential amplifier, the 11st, amplifier, the 12nd, contactor.5, the 6th, two end points of transformer LH or current divider FL, A are output (being soldering turret), and B also is output (being welded piece).
Claims (1)
1, a kind of remote control protection against electric shock A.C. welder of mainly forming by current transformer and control circuit and remote regulating box (rod) circuit, it is characterized in that remote regulating box (rod) circuit is to adopt resistance R 5 in parallel with capacitor C 1, be connected in series with crystal diode BG2 then, this circuit is located between output terminals A, the B, passes a current transformer LH or current divider FL links to each other with the secondary end of electric welding machine B1 at the lead of output B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89205009 CN2058120U (en) | 1989-04-19 | 1989-04-19 | Electricity-proof kemote-control a.c.welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89205009 CN2058120U (en) | 1989-04-19 | 1989-04-19 | Electricity-proof kemote-control a.c.welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2058120U true CN2058120U (en) | 1990-06-13 |
Family
ID=4862241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89205009 Withdrawn CN2058120U (en) | 1989-04-19 | 1989-04-19 | Electricity-proof kemote-control a.c.welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2058120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11548965B2 (en) | 2013-10-30 | 2023-01-10 | Basf Se | Polymers containing S-vinylthio alkanols |
-
1989
- 1989-04-19 CN CN 89205009 patent/CN2058120U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11548965B2 (en) | 2013-10-30 | 2023-01-10 | Basf Se | Polymers containing S-vinylthio alkanols |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |