CN1156072A - Butt welding method for rails and welding apparatus - Google Patents
Butt welding method for rails and welding apparatus Download PDFInfo
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- CN1156072A CN1156072A CN 96115642 CN96115642A CN1156072A CN 1156072 A CN1156072 A CN 1156072A CN 96115642 CN96115642 CN 96115642 CN 96115642 A CN96115642 A CN 96115642A CN 1156072 A CN1156072 A CN 1156072A
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Abstract
A butt welding method for rails features use of electroslag welding mould to force shaping and control of welding current to greatly reduce manufacture cost of welder and speed up welding. Said mould has inner surface with shape matched with profile of rails. The welding tools include fixture base and frame able to be clamped to rails to be welded and to feed welding electrodes, and controller to control welding speed and rotational direction of motor. It can work manually or in conjunction with computer. Its advantages are simple process and low cost.
Description
The invention provides a kind of welding equipment of welding method and this method of realization of track bond, bits railway special equipment technical field.
Along with railway transportation develops to high speed, laying the gapless rail circuit is one of essential and key point that realizes the train high-speed cruising, the key of gapless rail circuit is again the welding of track bond termination, particularly if can realize the butt joint welding of the on-the-spot rail of steel rail laying, the progress that more can improve the railway laying greatly and switch tracks is convenient to quality management and link is transported in minimizing.The China and the track bond welding equipment of use at present in the world, be the large-scale contact butt welding machine that Ukraine produces, mainly be to utilize big electric current to make the welding ends first meltization, powerful axial upset force in addition again, two rails is welded to be integral, this body is long-pending big, weight is big, need special-purpose big capacity converting equipment, need many people, many merits preface cooperates to be implemented, and on-the-spot use of price high (as 600,000 dollars of needs of import) needs to solve many difficulties, as electric power, welding equipment transportation etc., and the qualification rate of soldering tip is difficult to guarantee, this kind welding machine that China uses in fact all is to be fixed in the factory building to use, rail welding is become certain-length after, transport to again and lay ground, and behind the certain-length of shop, still leave the gap to connect to form, much utilize gas pressure welding connection welded rails though have for many years, but welding quality does not reach requirement, and efficient is low, the technological equipment complexity causes very big difficulty to construction.
Purpose of the present invention is exactly for addressing the above problem, and design provides the track bond welding method that a kind of welding wire plate dissolves forced shaping and the equipment of this method of realization, is convenient to lay that site operation, equipment are little, in light weight, energy savings, operation can realize automation.
Method of the present invention is achieved in that
1, butt joint two rails to be welded termination level is relative, leaving certain interval is 14-21mm, removes the erosion layer on the two ends, and through fixing this state that keeps.
2, treating the commissure, left and right is provided with contact-making surface with the bottom and is corresponding contact-making surface with rail, left and right and the bottom shaping mold of respective shapes, the last mold of a hollow funnel is arranged at top, and goes up under the mold hole corresponding to treating the commissure, correspondence is treated the commissure on the left and right and following mold, Baltimore groove is all arranged, forcing seam welding moulding to be welded, and also full, chemical property is stable under the mold employing high temperature, and the exotic material with certain mechanical strength and excellent conducting performance is made.
3, the sealing compound that brushing pasty state fire clay is made between mold and rail face seals with solder flux and the molten steel outflow that prevents to melt.
4, in treating weld seam, filling flux, selecting solder flux for use is homemade 431 solder flux.
5, selecting area of section for use is the tabular welding wire of 140-160 square millimeter, welding wire plate and rail to be welded are connected to source of welding current two ends, after weld seam is treated in the welding wire insertion, make itself and following mold short circuit, welding machine starts the back and separates striking, the arc-melting solder flux, make the electricity of solder flux lead increase, temperature reaches the solder flux of fusing more than 2000 ℃ with welding wire plate and the fusing of two rails end face sent to, constantly send to the welding electrode plate and to treat that weld seam fills up gradually and is welded together, control maintenance weldingvoltage is 30V in the welding process, welding current is controlled in the 200-650 ampere scope and changes, and flange of rail part welding current maximum, rail head part welding current takes second place, web of the rail part welding current minimum.
6, after the filler wire interference is filled up and treated weld seam, cut off the source of welding current and the welding wire plate is mentioned, be sticked together to prevent welding wire plate and rail.
7, after the place to be welded cooling, take off mold and promptly finish welding, finish welding after, interference is partly removed with pushing away except that machine, with emery wheel weld is polished, carry out the weld seam normalized treatment at last.
China and the international rail specification of using have three kinds, and promptly first kind is 50kg/m, and second kind is 60kg/m, and the third is 75kg/m.And the rail section is divided into the flange of rail from bottom to up, the web of the rail, rail head three parts, each partial cross section is long-pending to vary in size, even from bottom to top for guaranteeing weld seam, the heat affected area control of weld seam both sides within the limits prescribed during the each several part welding, and even up and down, the electric current when therefore three parts are welded is segmentation control.
Among the embodiment, the welding wire cross section is best for selecting 150 square millimeters for use, and Breadth Maximum is less than rail web of the rail width, and can be designed to the cross section length and width is 5 * 30mm.
Embodiment one
Welding object is a 50kg/m specification rail.
Rail gives and waits until weld seam is 15mm, weldingvoltage is set at 30 volts, welding current is controlled in the 200-400 ampere scope, wherein, (flange of rail part) time in the first welding stage after the striking is 3 minutes, welding current is 400 amperes, and (flange of rail is to the web of the rail part) time in the second welding stage is three minutes, and welding current is progressively reduced to 200 amperes from 400 amperes in this time, (rail head go to the bottom part) time phase III is 1 minute, welding current progressively rises to 350 amperes by 200 amperes, completely treats weld seam until the interference weldering, in said process, each welding stage is continuous welding, the speed of welding wire feeding is given and established the phase I is 0.25 meter/minute, second, three stages gave and are made as 0.1 meter/minute, and the quadravalence section is given and is made as 0.25 meter/minute, should be as the criterion to keep weldingvoltage to be 30 volts, when weldingvoltage during greater than 30 volts, should increase wire feed rate, make electric arc force down weldingvoltage and reduce to 30 volts, when weldingvoltage during less than 30 volts, should reduce wire feed rate, electric arc is elongated, weldingvoltage rises to 30 volts.This process is the dynamic stability process, realizes more convenient, accurate by computer control.
Embodiment two
Welding object is a 60kg/m specification rail
Rail gives and waits until weld seam is 20mm, weldingvoltage is set 30 volts, welding current is controlled in the 250-550 ampere scope, first welding stage (flange of rail is to web of the rail part) after the striking wherein, time is 5 minutes, welding current is 550 amperes, (flange of rail is to the web of the rail part) time in the second welding stage is 3 minutes, welding current is progressively reduced to 250 amperes from 550 amperes in this time, (rail head go to the bottom part) time phase III is 1 minute, and welding current progressively rises to 400 amperes by 250 amperes, quadravalence section (rail head part), welding current is controlled at 400 amperes, completely treats weld seam until the interference weldering.Each stage is continuous welding in said process, and the feed speed of welding wire is given and established the phase I is 0.25 meter/minute, and second and third stage gives and is made as 0.1 meter/minute, and the quadravalence section is given and is made as 0.25 meter/minute, should be as the criterion to keep weldingvoltage to be 30 volts.When weldingvoltage during greater than 30 volts, should increase wire feed rate, make electric arc force down weldingvoltage and reduce to 30 volts, when weldingvoltage during less than 30 volts, should reduce wire feed rate, make electric arc elongate weldingvoltage and rise to 30 volts, this process is the dynamic stability process, realizes more convenient, accurate by computer control.
Embodiment three
Welding object is a 75kg/m specification rail
Rail gives and waits until weld seam is 20mm, weldingvoltage is set at 30 volts, welding current is controlled in the 300-650 ampere scope, wherein (flange of rail part) time in the first welding stage after the striking is 6 minutes, welding current is 650 amperes, (flange of rail is to the web of the rail part) time in the second welding stage is 3 minutes, and welding current is progressively reduced to 300 amperes from 650 amperes in this time.Phase III (rail head go to the bottom part), the time is 2 minutes, and welding current progressively rises to 550 amperes by 300 amperes.Quadravalence section (rail head remainder) welding current is controlled to be 550 amperes and completely treats weld seam until interference weldering.Each stage is continuous welding in said process, the feed speed of welding wire is given and established the phase I is 0.25 meter/minute, second and third stage gives and is decided to be 0.1 meter/minute, and the quadravalence section is given and is decided to be 0.25 meter/minute, should be as the criterion to keep weldingvoltage to be 30 volts, when weldingvoltage during greater than 30 volts, should increase wire feed rate, make electric arc force down weldingvoltage and reduce to 30 volts, when weldingvoltage during less than 30 volts, should reduce wire feed rate, make electric arc elongate weldingvoltage and rise to 30 volts.This process is the dynamic stability process, realizes more convenient, accurate by computer control.
The special welding equipment of realizing welding method of the present invention is to be held on the rail welding wire conveying device of sewing on to be welded, source of welding current ZX7-800 type IGCT contravariant arc welding power source, regulate control end according to the output current on it, regulate the IGCT turn-on frequency in it, can regulate the output current size.
Accompanying drawing 1 is the main schematic diagram of looking of mold combination;
Accompanying drawing 3 is looked schematic diagram for a mold left side;
Accompanying drawing 5 is looked schematic diagram for welding wire conveying device master;
Accompanying drawing 6 is looked schematic diagram for a welding wire conveying device left side;
Accompanying drawing 7 is an electric control system schematic diagram in the welding wire conveying device;
Accompanying drawing 8 connects block diagram for computer control.
M, n are source of welding current binding post in the accompanying drawing, the remote control socket that a, b regulate for the welding current electric current.
Special-purpose mold among the present invention is made up of the left and right body (3) of upper body (1), lower body (2) and left and right symmetry.Upper body (1) is infundibulate (4) for hollow, an arc-shaped slot corresponding with the rail top (8) is arranged in the middle of the bottom, lower body (2) has the V-type groove (5) of a corresponding gap on it for plate shape, left and right body (3) shape is identical, the curve form (6) that all has a side to be to match with the rail side, and have in the middle of this side a corresponding rail treat weld seam width 2mm etc. dark groove (7).
During use mold lower body (2) is placed the steel rail welding line bottom, treat the weld seam left and right body of left and right placement mold (3), and fix, place mold upper body (1) on it, and make the end opening correspondence of funnel (4) treat weld seam through anchor clamps.
Exclusive clamps of the present invention is held in the welding wire conveying device on the rail to be welded, being divided into mechanical part and electric part forms, mechanical part comprises that the anchor clamps (10) of two band bilateral hold-down bolts (9) are fixed on the underframe (13) of band through hole (12) through insulating barrier (11), through hole (12) is used for welding wire to be passed through, on the underframe (13), support (14) is housed, servomotor (15) is housed on it, reach driving wheel (16) through driven by motor, the change-speed gearing that matches (17), drive the driving wheel (18) of welding wire (25), driving wheel (18) opposite side is equipped with the pinch roller (19) that compresses welding wire (25), an assembly combined pressure bearing up pulley (20) that is used to keep welding wire (25) direction also is housed on the support (14), (21), support (14) top is equipped with one and is used for that the source of welding current and welding wire (25) be connected, contact carbon brush head (22) and the band spring (23) that matches, the contact roller of support (24) is formed.
Electrical equipment control comprises: motor positive and inverse main circuit, operating voltage automatic control circuit, sequence circuit and welding current automatic control circuit etc. are partly formed, wherein:
The motor positive and inverse main circuit is by fuse RD
2With by J
5, J
3, J
1With button S
3Back in parallel is given by D
1, D
2, SCR
1, SCR
2The single phase-controlled rectification circuit power supply of forming, C
21, R
41Series connection, C
22, R
42Be connected in parallel on SCR after the series connection respectively
1And SCR
2Two ends shield; SCR
1And SCR
2Positive pole and control the utmost point be connected on respectively pulse transformer two output windings on, the voltage after the rectification is by the rotating relay J
3Two normally opened contact J
3-1, J
3-4, normally-closed contact J
3-2, J
3-3Be connected on the binding post of armature; Resistance R is passed through in the armature voltage negative-feedback
1, R
2Be connected to capacitor C after the dividing potential drop
3Two ends;
Capacitor C
2Be the voltage input end of thyristor gating circuit, circuits for triggering are by RF
1Pass through resistance R after the rectification full-bridge rectification
7With voltage-stabiliser tube ZD
1, ZD
2Give transistor TY after the voltage stabilizing
2, TY
1Unijunction transistor UJT forms series connection amplifier circuits for triggering; By being connected on TY respectively
2Resistance R on the collector and emitter
5, R
6Dividing potential drop is through capacitor C
1With discharging and recharging of unijunction transistor by the former limit of pulse transformer winding output pulse signal, at C
2Two ends are parallel with diode D
7Diode D with reverse serial connection
5, D
6At transistor T Y
1The emitter stage string resistance R is arranged
4, the unijunction transistor second base stage B
2The end string has resistance R
3
Source of welding current m (+), n (-) two ends also have by RF
4The dc source that the rectification full-bridge is formed is through resistance R
22With the resistance R that is attempted by positive and negative end
21With capacitor C
7Give relay J
4Power supply, J
4With the anodal diode D of the source of welding current by a reversal connection
8Pass through J after joining
4A normally-closed contact J
4-1Make string that resistance R be arranged
13Relay J
2Be attempted by source of welding current positive and negative end, the operating voltage feedback is passed through J
2A normally opened contact J
2-3, R
14, by W
4And resistance R
20After the dividing potential drop by potentiometer W
4And R
20Draw and be attempted by capacitor C
8Two ends.
By RF
3After the rectification full-bridge rectification by the series connection resistance R
11With potentiometer W
3, in parallel capacitor C
6With the J that is serially connected in the rectifier anode end
2Normally-closed contact J
2-2By and the R that connects
12Draw at the resistance two ends, adjusts potentiometer W
3The adjustable motor speed of reeling off raw silk from cocoons.
By RF
2The circuit of rectification full-bridge power supply is to fixed voltage circuit, the positive terminal series resistance R after the rectification
8And relay J
2A normally opened contact J
2-1With capacitor C
5With Zener diode ZD
1, ZD
2Be attempted by positive and negative end after the series connection, positive terminal passes through resistance R
9Serial connection is by time relay JSZ
1A normally-closed contact JSZ
1-2, potentiometer W
1First branch road that forms; By time relay JSZ
1A normally opened contact JSZ
1-1, potentiometer RTS
1, time relay JSZ
2A normally-closed contact JSZ
2-1Second branch road that series connection forms; By time relay JSZ
2A normally opened contact JSZ
2-2, potentiometer RTS
2The 3rd branch road that series connection forms; Then by potentiometer W
2And R
10After the dividing potential drop by W
2Sliding contact and R
10Draw, this circuit is connected in series with the speed circuit of reeling off raw silk from cocoons.
Capacitor C
3And C
4Be connected in parallel on capacitor C
2Subtract each other and the operating voltage addition at two ends, given voltage and armature voltage, by capacitor C
2The control voltage as circuits for triggering is drawn at two ends.
Welding current automatic control circuit: by fuse RD
4Give rectification full-bridge RF
7Power supply, the R by connecting after the rectification
25And shnt capacitor C
19Give the ZD of series connection
3And ZD
4Voltage stabilizing is through the R of series connection
26Serial connection is by time relay JSZ
1A normally-closed contact JSZ
1-4, potentiometer W
5First branch road that series connection forms; By time relay JSZ
1A normally opened contact JSZ
1-3, potentiometer RTL
1, time relay JSZ
2A normally-closed contact JSZ
2-3Second branch road that series connection forms; By time relay JSZ
2A normally opened contact JSZ
2-4, potentiometer RTL
2The 3rd branch road that series connection forms; Then by potentiometer W
6And resistance R
27After the dividing potential drop by W
6Sliding contact and R
27Draw, deliver to the remote control socket of the source of welding current.
Sequence circuit: by relay J
3, J
1And time relay J SZ
1, JSZ
2, JSZ
3Five the tunnel compose in parallel, wherein J
3Serial connection is by J
2-4, J
4-2And S
4The parallel circuit that button is formed; J
1Series connection is by time relay JSZ
3A normally-closed contact JSZ
3-1, start button S
1With stop button S
2, the while also connects by J
1A normally opened contact J
1-2The indicator lamp PL and the dropping resistor R of series connection
16, in addition in parallel by full-bridge RF
6Give J
5Power supply and charging capacitor C
18, discharge resistance R
19The delay circuit of forming, the time relay JSZ J that connects
1A normally opened contact J
1-3Time relay JSZ
2Series connection J
1A normally opened contact J
1-3Time relay JSZ
3Series connection JSZ
2A normally opened contact JSZ
2-5
Programme-control: only when the source of welding current is unloaded, floating voltage and RF
4After given voltage subtracts each other, just can make relay J
4Action J
4-1Cut off the operating voltage feedback circuit, the protective effect when playing zero load.Make the rotating relay J simultaneously
3J is passed through in adhesive
3-1, J
3-4The contact makes motor just pass on silk, and when welding wire plate and base plate short circuit, this moment, operating voltage was zero, because D
8Oppositely end, so J
4And J
2All not adhesives, J
2-3, J
2-4, J
4-2All disconnect, anyway change relay J
3Not adhesive, motor are in the power supply state that counter-rotating is reeled off raw silk from cocoons, S
4Be manual wire feed button, S
3Be the button that manually reels off raw silk from cocoons, the speed the when usefulness of adjusting when being used for preparation is reeled off raw silk from cocoons is by W
3Adjust and determine.
Welding starts: after preparation is ready, earlier with manual wire feed button S
4With welding wire plate and base plate short circuit, behind the filling flux, press start button S
1, J
1Adhesive, J in the main source of welding current circuit
1A normally opened contact J
1-1Closure makes the adhesive of source of welding current contactor, connects external power supply, this moment welding wire be in base plate short-circuit condition, operating voltage be zero, J
3Not adhesive, the motor counter-rotating is reeled off raw silk from cocoons, and welding wire is progressively separated with base plate, and set up electric arc, when operating voltage is raised to 16 volts of left and right sides, relay J
2Adhesive, J
2-4Adhesive, J
3Adhesive, motor are initially located in just passes on thread attitude, because this moment, operating voltage was lower than 30 volts of setting, so because effect of feedback circuit, wire feed rate is lower than welding wire melting rate, and make operating voltage progressively rise to 30 volts and then enter normal wire feed state, and by circuit automatic stabilisation operating voltage.
The control circuit of welding conditions is adjusted in segmentation automatically: work as J
1When adhesive enters welding, J
1-3Closing time relay J SZ
1Energising, the time of relay deferred action this moment, the weld interval of the phase I of being set at are therefore at JSZ
1In time before the action of contact, wire feed rate is by W
1Setting value determines that welding current is by W
5Setting value is definite, thereby has guaranteed the welding conditions of phase I; When the phase I, finished weld interval, JSZ
1Contact action action JSZ
1-2Disconnect JSZ
1-1Closure, JSZ
1-4Disconnect JSZ
1-3Closure makes W
1Break W
5Break, and make RTS
1And RTL
1Connect the welding conditions that guarantee second stage respectively; Simultaneously because JSZ
1-5Give JSZ with closure
2Time-delay energising relay is connected power supply, treats JSZ
2When finishing between time-delay, because JSZ
2-1Disconnect JSZ
2-2Disconnect JSZ
2-2Closure, JSZ
2-4Closure, RTS
1And RTL
1Break and RTS
2, RTL
2Connect the welding conditions that guarantee the phase III respectively; While JSZ
2-5The closed JSZ that gives
3Time-delay energising relay turn-on current, JSZ when treating that time phase III finishes
3Contact JSZ
3-1Disconnect, make J
1Outage stops welding;
Welding wire back suction control when welding stops: work as J
1In the time of adhesive, J
5Pass through RF
6The power supply adhesive, J in the motor power supply circuits
5A normally opened contact J
5-1Closed simultaneously, also give electrical equipment C
18Charging;
When welding stops, though J
1Normally opened contact J
1-1Disconnect, but J in the motor power supply circuits
5A normally opened contact J
5-1Still connect, and J
5Rely on C this moment
18Pass through R
19Discharge and the continuation adhesive, treat C
18After having discharged, J
5Decontrol J
5-1Disconnect, this section discharge time, motor are in the counter-rotating power supply state, thereby obtaining to stop postwelding welding wire back suction a period of time then stops, in order to avoid welding wire and workpiece adhesion.
When using the welding of present device and method, can adopt computer control to be more convenient for unifying coordination and carry out welding method, accompanying drawing 8 has provided and has adopted computer-controlled connection block diagram, wherein included program setting, be meant different welding currents, different wires feed rate and time dependent relation that the flange of rail, the web of the rail, rail head three parts to the different size rail are set.
With Welding Method ﹠ Equipment welded rails joint of the present invention, speed of welding is fast, and weight of equipment is light, be convenient in the on-the-spot welding of steel rail laying, the expense of each plumb joint reduces greatly, and welding point point intensity meets the standard of the iron mark 1632-91 of the Ministry of Railways, is convenient to production domesticization and produces and promote the use of.
Claims (6)
1, a kind of track bond welding method is characterized in that:
1. the two rails termination of butt joint to be welded is removed the erosion layer, level leaves the slit to be welded of 14-21mm to relatively, and keeps this state after anchor clamps are fixing;
2. limbs are combined into weld seam is surrounded mold in it treating to be provided with around the commissure, and mold and rail contact-making surface are and the rail profile correspondingly-shaped, and a bell mouth is arranged at the bottom of the top of mold, lead in treating weld seam, and mold employing T5 high purity graphite is made;
3. between mold and rail contact-making surface, brush the sealing compound of fire clay powder furnishing, flow out with solder flux and the molten steel that prevents to melt;
4. in treating weld seam, filling flux, solder flux are 431 solder flux;
5. welding wire is made the sheet material that sectional area is the 140-160 square millimeter, be connected to source of welding current two ends respectively with rail, make mold short circuit at the bottom of welding wire and the rail earlier, then separate striking, source of welding current operating voltage is 30 volts, the welding job Current Control is at the 200-650 ampere, make welding wire striking fusing, and in fusion process, carry the speed of welding wire should make operating voltage remain on 30 volts, when operating voltage during greater than 30 volts, increase and send wire speed, make operating voltage drop to 30 volts, otherwise, should reduce and send wire speed, make operating voltage be elevated to 30 volts;
6. after treating that welding wire fusing interference weldering is completely treated weld seam, cut off the source of welding current, and the residue welding wire is mentioned, break away from weld seam;
7. after treating the weld seam cooling, take off mold, promptly finish welding.
2, track bond welding method as claimed in claim 1, it is characterized in that: treat that weld gap is 15mm, the welding wire sectional area is 150 square millimeters, welding wire feeding speed is 0.25 meter/minute, 0.1 rice/minute, 0.25 rice/minutes three sections, welding current is controlled between the 200-400 ampere, wherein, be 3 minutes weld interval phase I after the striking welding, welding current is 400 amperes, control electric current then and in 3 minutes, progressively reduce to 200 amperes, it was the second welding stage, time phase III is 1 minute, and makes welding current progressively be elevated to 350 amperes, and the 4th welding stage kept welding current at 350 amperes, completely treat weld seam until wire melting interference weldering, and four-stage is continuous welding.
3, track bond welding method as claimed in claim 1, it is characterized in that: treat that weld gap is 20mm, the welding wire sectional area is 150 square millimeters, the welding wire feeding base speed is 0.25 meter/minute, 0.1 rice/minute, 0.25 rice/minutes three sections, welding current is controlled in the 250-500 ampere scope, wherein, after the striking welding, be 5 minutes weld interval phase I, welding current is 500 amperes, second welding is 3 minutes weld interval in stage, and welding current progressively is reduced to 250 amperes from 550 amperes in this time, and time phase III is 1 minute, in this time, make welding current progressively increase to 400 amperes from 250 amperes, the 4th welding stage was completely treated weld seam for wire melting interference weldering, and welding current is controlled at 400 amperes therebetween, and above-mentioned four welding stages are continuous weldings.
4, track bond welding method as claimed in claim 1, it is characterized in that: treat that weld gap is 20mm, the welding wire sectional area is 150 square millimeters, the welding wire feeding reference speed is 0.25 meter/minute, 0.1 rice/minute, 0.25 rice/minutes three sections, welding current is controlled between the 300-650 ampere, wherein, after the striking welding, be 6 minutes weld interval phase I, and welding current is 650 amperes, second welding is 3 minutes weld interval in stage, welding current progressively is reduced to 300 amperes from 650 amperes in this welding process, and time phase III is 2 minutes, in this time, welding current is by 300 amperes, rise to 550 amperes, the 4th welding stage is for completely treating weld seam until wire melting interference weldering, welding current is 550 amperes therebetween, and four-stage is continuous welding.
5, a kind of mold of realizing the described track bond welding method of claim 1, make with exotic material, it is characterized in that mold is by placing rail to treat weld seam upper body (1) on every side respectively, the left side of lower body (2) and symmetry, right body (3) is formed, one cavity that is infundibulate (4) is arranged in the upper body (1), an arc-shaped slot corresponding with the rail top (8) is arranged in the middle of the bottom, lower body (2) is a plate shape, a V-type groove (5) is arranged on it, a left side, right body (3) is identical, a side is all arranged for being protruding with the rail side, the curved surface that concave shape matches (6), and there is dark groove (7) such as at this curved surface (6) middle part.
6, a kind of welding wire conveying device that realizes the described track bond welding method of claim 1, be grouped into by mechanical part and electrical control division, it is characterized in that: mechanical part comprises the anchor clamps (10) of two band bilateral hold-down bolts (9), through insulating barrier (11), be fixed on the underframe (13) of band through hole (12), through hole (12) is used for welding wire to be passed through, support (14) is housed on the underframe (13), on it, servomotor (15) is housed, reach driving wheel (16) through driven by motor, the change-speed gearing that matches (17), drive the driving wheel (18) of welding wire (25), driving wheel (18) other end is equipped with the pinch roller (19) that compresses welding wire (25), an assembly combined pressure bearing up pulley (20) that is used to keep welding wire (25) direction also is housed on the support (14), (21), support (14) top is equipped with a contact roller (24) that is used for band spring (23) support that contacts carbon brush head (22) and match that the source of welding current and welding wire (25) be connected and is formed.
Electrical equipment control comprises: motor positive and inverse main circuit, operating voltage automatic control circuit, sequence circuit and welding current automatic control circuit etc. are partly formed, wherein:
The motor positive and inverse main circuit is by fuse RD
2With by J
5, J
3, J
1With button S
3Back in parallel is given by D
1, D
2, SCR
1, SCR
2The single phase-controlled rectification circuit power supply of forming, C
21, R
41Series connection, C
22, R
42Be connected in parallel on SCR after the series connection respectively
1And SCR
2Two ends shield; SCR
1And SCR
2Positive pole and control the utmost point be connected on respectively pulse transformer two output windings on, the voltage after the rectification is by the rotating relay J
3Two normally opened contact J
3-1, J
3-4, normally-closed contact J
3-2, J
3-3Be connected on the binding post of armature; Resistance R is passed through in the armature voltage negative-feedback
1, R
2Be connected to capacitor C after the dividing potential drop
3Two ends;
Capacitor C
2Be the voltage input end of thyristor gating circuit, circuits for triggering are by RF
1Pass through resistance R after the rectification full-bridge rectification
7With voltage-stabiliser tube ZD
1, ZD
2Give transistor TY after the voltage stabilizing
2, TY
1Unijunction transistor UJT forms series connection amplifier circuits for triggering; By being connected on TY respectively
2Resistance R on the collector and emitter
5, R
6Dividing potential drop is through capacitor C
1With discharging and recharging of unijunction transistor by the former limit of pulse transformer winding output pulse signal, at C
2Two ends are parallel with diode D
7Diode D with reverse serial connection
5, D
6At transistor T Y
1The emitter stage string resistance R is arranged
4, the unijunction transistor second base stage B
2The end string has resistance R
3
Source of welding current m (+), n (-) two ends also have by RF
4The dc source that the rectification full-bridge is formed is through resistance R
22With the resistance R that is attempted by positive and negative end
21With capacitor C
7Give relay J
4Power supply, J
4With the anodal diode D of the source of welding current by a reversal connection
8Pass through J after joining
4A normally-closed contact J
4-1Make string that resistance R be arranged
13Relay J
2Be attempted by source of welding current positive and negative end, the operating voltage feedback is passed through J
2A normally opened contact J
2-3, R
14, by W
4And resistance R
20After the dividing potential drop by potentiometer W
4And R
20Draw and be attempted by capacitor C
8Two ends;
By RF
3After the rectification full-bridge rectification by the series connection resistance R
11With potentiometer W
3, in parallel capacitor C
6With the J that is serially connected in the rectifier anode end
2Normally-closed contact J
2-2By and the R that connects
12Draw at the resistance two ends, adjusts potentiometer W
3The adjustable motor speed of reeling off raw silk from cocoons;
By RF
2The circuit of rectification full-bridge power supply is to fixed voltage circuit, the positive terminal series resistance R after the rectification
8And relay J
2A normally opened contact J
2-1With capacitor C
5With Zener diode ZD
1, ZD
2Be attempted by positive and negative end after the series connection, positive terminal passes through resistance R
9Serial connection is by time relay JSZ
1A normally-closed contact JSZ
1-2, potentiometer W
1First branch road that forms; By time relay JSZ
1A normally opened contact JSZ
1-1, potentiometer RTS
1, time relay JSZ
2A normally-closed contact JSZ
2-1Second branch road that series connection forms; By time relay JSZ
2A normally opened contact JSZ
2-2, potentiometer RTS
2The 3rd branch road that series connection forms; Then by potentiometer W
2And R
10After the dividing potential drop by W
2Sliding contact and R
10Draw, this circuit is connected in series with the speed circuit of reeling off raw silk from cocoons;
Capacitor C
3And C
4Be connected in parallel on capacitor C
2Subtract each other and the operating voltage addition at two ends, given voltage and armature voltage, by capacitor C
2The control voltage as circuits for triggering is drawn at two ends;
Welding current automatic control circuit: by fuse RD
4Give rectification full-bridge RF
7Power supply, the R by connecting after the rectification
25And shnt capacitor C
19Give the ZD of series connection
3And ZD
4Voltage stabilizing is through the R of series connection
26Serial connection is by time relay JSZ
1A normally-closed contact JSZ
1-4, potentiometer W
5First branch road that series connection forms; By time relay JSZ
1A normally opened contact JSZ
1-3, potentiometer RTL
1, time relay JSZ
2A normally-closed contact JSZ
2-3Second branch road that series connection forms; By time relay JSZ
2A normally opened contact JSZ
2-4, potentiometer RTL
2The 3rd branch road that series connection forms; Then by potentiometer W
6And resistance R
27After the dividing potential drop by W
6Sliding contact and R
27Draw, deliver to the remote control socket of the source of welding current;
Sequence circuit: by relay J
3, J
1And time relay J SZ
1, JSZ
2, JSZ
3Five the tunnel compose in parallel, wherein J
3Serial connection is by J
2-4, J
4-2And S
4The parallel circuit that button is formed; J
1Series connection is by time relay JSZ
3A normally-closed contact JSZ
3-1, start button S
1With stop button S
2, the while also connects by J
1A normally opened contact J
1-2The indicator lamp PL and the dropping resistor R of series connection
16, in addition in parallel by full-bridge RF
6Give J
5Power supply and charging capacitor C
18, discharge resistance R
19The delay circuit of forming, time relay JSZ
1Series connection J
1A normally opened contact J
1-3Time relay JSZ
2Series connection J
1A normally opened contact J
1-3Time relay JSZ
3Series connection JSZ
2A normally opened contact JSZ
2-5
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115642 CN1156072A (en) | 1996-02-02 | 1996-02-02 | Butt welding method for rails and welding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115642 CN1156072A (en) | 1996-02-02 | 1996-02-02 | Butt welding method for rails and welding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1156072A true CN1156072A (en) | 1997-08-06 |
Family
ID=5122870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96115642 Pending CN1156072A (en) | 1996-02-02 | 1996-02-02 | Butt welding method for rails and welding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1156072A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448596C (en) * | 2002-12-02 | 2009-01-07 | 西门子公司 | Method for production of a component |
| CN102974927A (en) * | 2012-11-26 | 2013-03-20 | 南车二七车辆有限公司 | Welding method for lengthening H-shaped steel of railway freight platform wagon chassis |
| CN107931826A (en) * | 2017-12-28 | 2018-04-20 | 中国铁道科学研究院金属及化学研究所 | A kind of electroslag welding with tube electrode suitable for rail connects die device |
| CN109175675A (en) * | 2018-09-14 | 2019-01-11 | 华中科技大学 | A kind of three electroslag welding with consumable nozzle welders of rail |
| CN110394526A (en) * | 2019-07-10 | 2019-11-01 | 广汉市恒锐钢球制造有限公司 | Welding current automatic adjustment unit and welding machine and application method for welding machine |
-
1996
- 1996-02-02 CN CN 96115642 patent/CN1156072A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448596C (en) * | 2002-12-02 | 2009-01-07 | 西门子公司 | Method for production of a component |
| CN102974927A (en) * | 2012-11-26 | 2013-03-20 | 南车二七车辆有限公司 | Welding method for lengthening H-shaped steel of railway freight platform wagon chassis |
| CN107931826A (en) * | 2017-12-28 | 2018-04-20 | 中国铁道科学研究院金属及化学研究所 | A kind of electroslag welding with tube electrode suitable for rail connects die device |
| CN107931826B (en) * | 2017-12-28 | 2023-10-13 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Pipe electrode electroslag welding die device suitable for steel rail |
| CN109175675A (en) * | 2018-09-14 | 2019-01-11 | 华中科技大学 | A kind of three electroslag welding with consumable nozzle welders of rail |
| CN109175675B (en) * | 2018-09-14 | 2020-06-30 | 华中科技大学 | Steel rail three-wire melting nozzle electroslag welding device |
| CN110394526A (en) * | 2019-07-10 | 2019-11-01 | 广汉市恒锐钢球制造有限公司 | Welding current automatic adjustment unit and welding machine and application method for welding machine |
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