CN2399145Y - Secondary electric shock protector for electric welder - Google Patents

Secondary electric shock protector for electric welder Download PDF

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Publication number
CN2399145Y
CN2399145Y CN 99252675 CN99252675U CN2399145Y CN 2399145 Y CN2399145 Y CN 2399145Y CN 99252675 CN99252675 CN 99252675 CN 99252675 U CN99252675 U CN 99252675U CN 2399145 Y CN2399145 Y CN 2399145Y
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China
Prior art keywords
contactor
resistance
altogether
voltage
anode
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Expired - Fee Related
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CN 99252675
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Chinese (zh)
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岳大正
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Individual
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Individual
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Priority to CN 99252675 priority Critical patent/CN2399145Y/en
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Abstract

The utility model provides a secondary electric shock protector for an electric welder, which is mainly composed of a contactor and a controller, wherein, a main contact of the contactor uses a single-phase normally open double breakpoint bridge type structure composed of two static contact plates and a moving contact plate arranged on the top; the controller is composed of a housing built-in circuit board fixed on the contactor; a control circuit is mainly composed of a rectifier, a controlled silicon triggering circuit and a time delay closing circuit. The main contact of the contactor of the utility model uses the structure that big electrical conduction cross sections are symmetrically arranged, which not only can satisfy the requirement of high-current work but also can cause the service life of the utility model to be enhanced. Moreover, the utility model has the advantages of reasonable structural design, small size, strong versatility, and high safety, and is suitable for matching with the electric welder of each type.

Description

The secondary electric protective device of electric welding machine
The utility model relates to a kind of secondary electric protective device of electric welding machine that uses with the electric welding machine configuration.
The electric welding machine electrocution-proof protection device of being made up of contactor and controller in the prior art mostly is outlet structure greatly, and the volume of equipment is bigger, and versatility is not strong; Its three-phase bridge main contact structure current capacity is little, and service life is short; The complex structural designs of controller, the deployment cost height.
The purpose of this utility model is at the problems referred to above, and provide that a kind of volume is little, highly versatile, deployment cost are low, long service life, the secondary electric protective device of electric welding machine that security reliability is high.
The technical scheme that realizes above-mentioned purpose is: the secondary electric protective device of a kind of electric welding machine, mainly be made up of contactor and controller, the main contact of its contactor is by the two static contact plates that are fixed in top and is configured between the two static contact plates moving contact plate of top and the single-phase double break point bridge architecture of often opening that constitutes; Controller is to constitute by being fixed on the shell internal circuit board on the contactor; The circuit bank of its protector becomes: the main contact KM of contactor 1Be serially connected in the electrode holder line, two inputs of the rectifier IZL in the controller are connected to the output and ground of electric welding machine, main noddle on contactor KM 1The other end and electrode holder line and resistance R wAn end be connected resistance R wWith diode D 2, resistance R 6Series connection back and photoelectronic coupler V 1The negative electrode of middle diode connects, V 1The anode of middle diode and colelctor electrode, the voltage-stabiliser tube DW of its triode 1Negative electrode and resistance R 2An end be connected in some V altogether 1The emitter stage and the controllable silicon T of middle triode 1The control utmost point be connected controllable silicon T 1Negative electrode and negative pole, the voltage-stabiliser tube DW of rectifier IZL 1Anode, controllable silicon T 2Negative electrode and capacitor C 2Negative pole and resistance R 5An end be connected in some resistance R altogether 5The other end and capacitor C 2Positive pole, resistance R 4An end and voltage-stabiliser tube DW 2Negative electrode be connected in some voltage-stabiliser tube DW altogether 2Anode and controllable silicon T 2The control utmost point link together controllable silicon T 2Anode and capacitor C 1An end and resistance R 3An end be connected in some resistance R altogether 4The other end and voltage-stabiliser tube DW 3Anode be connected voltage-stabiliser tube DW 3Negative electrode, resistance R 3The other end and contactor often open auxiliary contact KM 2An end be connected in altogether a bit, often open auxiliary contact KM 2The other end and the normally closed auxiliary contact KM of contactor 3An end, the end of indicator lamp ZD and the positive pole of rectifier IZL be connected in a bit normally closed auxiliary contact KM altogether 3The other end and the other end and the contactor coil KM of indicator lamp ZD 4An end be connected in some coil KM altogether 4The other end and resistance R 2The other end, controllable silicon T 1Anode, capacitor C 1The other end be connected in a bit altogether.
The utlity model has following advantage:
1, structural design compactness, volume are little, are convenient to be installed in the electric welding machine use;
2, low, the highly versatile of product cost is fit to and the supporting use of all types of electric welding machines;
3, long product lifecycle;
4, output voltage is low during electric welder no-load, and security performance is good.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the secondary electric protective device structural front view of this electric welding machine;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the external line chart of this protector;
Fig. 4 is the circuit diagram of this protector.
The utility model is described in further detail below in conjunction with drawings and Examples:
Provide as accompanying drawing 1, Fig. 2, the secondary electric protective device of this electric welding machine is made of contactor 1 and 2 two main parts of controller.The contactor main body adopts low capacity A.C. contactor structure.Main contact adopts the single-phase double break point bridge architecture of often opening, by the two static contact plates 3 that are fixed on contactor top and the moving contact plate 4 above being configured between it form.Its dynamic/static contact plate adopts copper plate to form through integral body is silver-plated, and contact area is big each other, and current density is little.Its dynamic/static contact adopts symmetric mode to install, and can two-sided transposing use, and the life-span of main contact is improved greatly.Its contactor pull-in winding can be selected for use and exchange 380 volts, the 220 volts methods of operation, also can adopt the DC operation mode.
Accompanying drawing 3 has provided the contactor 1 of this protector and controller 2 and and the external mode of connection of 5 of electric welding machines.Its controller leads to A, B, C, D, six external connection terminals of E, F, is connected with the corresponding external connection terminal that electric welding machine output loop and contactor are drawn respectively.
Accompanying drawing 4 provided this protector particular circuit configurations and with the concrete electric connection structure of electric welding machine.Its main noddle on contactor KM 1Be serially connected in the electrode holder line of electric welding machine, the binding post A that is drawn by two inputs of rectifier IZL in the controller is connected main noddle on contactor KM with the binding post of electric welding machine output and ground respectively with C 1The binding post B of the other end and electrode holder line and series resistor R w, negative electrode meets R wDiode D 2, resistance R 6And be connected to photoelectronic coupler V 1The binding post of middle diode cathode is connected photoelectronic coupler V 1The anode of middle diode and colelctor electrode, the voltage-stabiliser tube DW of its triode 1Negative electrode and resistance R 2An end be connected to some photoelectronic coupler V altogether 1The emitter stage and the controllable silicon T of middle triode 1The control utmost point be connected controllable silicon T 1Negative electrode and negative pole and the resistance R of rectifier IZL 5An end be connected to some resistance R altogether 5The other end and capacitor C 2Negative pole and resistance R 5An end be connected to some resistance R altogether 5The other end and capacitor C 2Negative pole and resistance R 5An end be connected to some resistance R altogether 5The other end and capacitor C 2Positive pole, resistance R 4An end and voltage-stabiliser tube DW 2Negative electrode be connected in some voltage-stabiliser tube DW altogether 2Anode and controllable silicon T 2The control utmost point link together controllable silicon T 2Anode and capacitor C 1An end and resistance R 3An end be connected in some resistance R altogether 4The other end and voltage-stabiliser tube DW 3Anode be connected voltage-stabiliser tube DW 3Negative electrode, resistance R 3The other end and contactor often open auxiliary contact KM 2An end be connected in terminal E altogether, often open auxiliary contact KM 2The other end and the normally closed auxiliary contact KM of contactor 3An end, the end of indicator lamp ZD and the positive pole of rectifier IZL are connected in terminal D altogether, normally closed auxiliary contact KM 3The other end and the other end and the contactor coil KM of indicator lamp ZD 4An end be connected in some coil KM altogether 4The other end and resistance R 2The other end, controllable silicon T 1Anode, capacitor C 1The other end be connected in terminal F altogether.
After this protector disposed with electric welding machine, output safety low-voltage when electric welder no-load during electric welder arc striking, triggered controllable silicon T by short circuit current 1Conducting, contactor coil KM 4Must be electric, make main contact KM 1Adhesive, welding process are normally carried out.After stopping welding, after delay circuit time-delay a period of time, controllable silicon T 2Triggering and conducting makes controllable silicon T simultaneously 1Close main contact KM 1Return back to normally open, electric welding machine maintains unloaded safe low-voltage output state.

Claims (1)

1, the secondary electric protective device of a kind of electric welding machine, mainly be made up of contactor (1) and controller (2), it is characterized in that: the main contact of contactor (1) is by the two static contact plates (3) that are fixed in top and is configured between the two static contact plates moving contact plate (4) of top and the single-phase double break point bridge architecture of often opening that constitutes; Controller (2) is to constitute by being fixed on the shell internal circuit board on the contactor (1); The circuit bank of its protector becomes: the main contact KM of contactor (1) 1Be serially connected in the electrode holder line, two inputs of the rectifier IZL in the controller (2) are connected to the output and ground of electric welding machine, main noddle on contactor KM 1The other end and electrode holder line and resistance R wAn end be connected resistance R wWith diode D 2, resistance R 6Series connection back and photoelectronic coupler V 1The negative electrode of middle diode connects, V 1The anode of middle diode and colelctor electrode, the voltage-stabiliser tube DW of its triode 1Negative electrode and resistance R 2An end be connected in some V altogether 1The emitter stage and the controllable silicon T of middle triode 1The control utmost point be connected controllable silicon T 1Negative electrode and negative pole, the voltage-stabiliser tube DW of rectifier IZL 1Anode, controllable silicon T 2Negative electrode and capacitor C 2Negative pole and resistance R 5An end be connected in some resistance R altogether 5The other end and capacitor C 2Positive pole, resistance R 4An end and voltage-stabiliser tube DW 2Negative electrode be connected in some voltage-stabiliser tube DW altogether 2Anode and controllable silicon T 2The control utmost point link together controllable silicon T 2Anode and capacitor C 1An end and resistance R 3An end be connected in some resistance R altogether 4The other end and voltage-stabiliser tube DW 3Anode be connected voltage-stabiliser tube DW 3Negative electrode, resistance R 3The other end and contactor often open auxiliary contact KM 2An end be connected in altogether a bit, often open auxiliary contact KM 2The other end and the normally closed auxiliary contact KM of contactor 3An end, the end of indicator lamp ZD and the positive pole of rectifier IZL be connected in a bit normally closed auxiliary contact KM altogether 3The other end and the other end and the contactor coil KM of indicator lamp ZD 4An end be connected in some coil KM altogether 4The other end and resistance R 2The other end, controllable silicon T 1Anode, capacitor C 1The other end be connected in a bit altogether.
CN 99252675 1999-12-08 1999-12-08 Secondary electric shock protector for electric welder Expired - Fee Related CN2399145Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99252675 CN2399145Y (en) 1999-12-08 1999-12-08 Secondary electric shock protector for electric welder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99252675 CN2399145Y (en) 1999-12-08 1999-12-08 Secondary electric shock protector for electric welder

Publications (1)

Publication Number Publication Date
CN2399145Y true CN2399145Y (en) 2000-10-04

Family

ID=34036788

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99252675 Expired - Fee Related CN2399145Y (en) 1999-12-08 1999-12-08 Secondary electric shock protector for electric welder

Country Status (1)

Country Link
CN (1) CN2399145Y (en)

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C19 Lapse of patent right due to non-payment of the annual fee
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