CN1257768A - Welder for flash butt welding steel rail - Google Patents
Welder for flash butt welding steel rail Download PDFInfo
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- CN1257768A CN1257768A CN 98106266 CN98106266A CN1257768A CN 1257768 A CN1257768 A CN 1257768A CN 98106266 CN98106266 CN 98106266 CN 98106266 A CN98106266 A CN 98106266A CN 1257768 A CN1257768 A CN 1257768A
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Abstract
A welding machine for the flash-butt welding betweenrails is composed of two jaw-type clampers with dual arms and common pin axle, which are electrically insulated, two flash butt-forging hydraulic cylinders to make two clampers move relatively along the pin axle, and two welding transformmers installed in hollow dual arms for one of clampers and electrically connected to two jaws via the electrically conductive part of the piston rod of flash butt-forging hydraulic cylinder. The hydraulic booster is made on the piston rod of clamping hydraulic cylinder. Two pistons of serially linked two flash butt-forging hydraulic cylinders are separated by partition and mounted to a same piston rod of each hydraulic cylinder.
Description
The present invention relates to flash-butt welding equipment, more particularly, relate to the equipment that has pincerlike clamping device of the on-the-spot welding of a kind of rail.
Known a kind of flash-butt welding rail welder (seeing Soviet Union inventors certificate No.129758) comprises welding transformer, contact jaw, apparatus for fastening.This apparatus for fastening has to be fitted with to be used for finishing and changes translational speed and upset by the fluid pressure drive device of the device of the preset sequence of welding steel rail and upset fluid pressure drive device, the shell of this equipment is made two pincerlike chucks, be installed on the same axle, put into institute's welding steel rail from top suspension.
Known another kind of flash-butt welding connects equipment (seeing Soviet Union inventors certificate No.201561), comprise two ligulate clamping devices installing and clamp the welder of institute part, have conduct electricity claw welding transformer and be used for the fluid pressure drive device of in flash of light and compressing process clamping and travelling workpiece, clamping device is connected with each other by three bars, wherein place with respect to the workpiece symmetry at grade for two, the 3rd bar is the turning cylinder of a pincerlike clamping device bar, be inserted in the cover as the turning cylinder of another clamping device bar, the center-pole that has cover can be used as the guide that clamping device relatively moves.
Known a kind ofly independently be installed in outside the welding machine at the device of removing burr on the rail after the flash-butt welding removed burr after cooling off.This just requires great effort time-consuming.See U.S. Patent No. 3336839 cl.90-24,1967.
It comprises the cover plate of base plate, side plate and fixed frame rail.The axis of guide is changed in the side plate.The cutter of removing burr along the whole periphery of rail is fixed on by hydraulic cylinder or pneumatic cylinder by screw and passes through on the moving member of crank, tooth bar or gear drive.She Ji this device can be regulated the tool position according to rail type like this.The cutter that burr is removed from rail foot is a stationary fixing, does not contact with the sole plate metal of rail.
Known a kind of device of removing burr on the rail, it is installed on the pincerlike rail welder, comprises shell and surrounds three cutters of the whole periphery of rail profile, utilizes the power of welding machine upset cylinder to remove burr.Its upper knife comprises two parts, fixedly secure on shell, and the side direction cutter of two symmetries can rotate with respect to the welding machine clamping lever, by hinged connecting rod the top of side cutter is coupled together (see Soviet Union inventors certificate No.517429, cl.V23K 11,/04 1974).
Immediate on key technology is equipment described in " flash-butt welding rail welding equipment and operation thereof " book, sees Naukova Dumka publishing house, Kiev, 1974,73-84 page or leaf.
This equipment has pincerlike chuck, is used at the scene welded rails under the condition, and it comprises two pincerlike clamping devices that are installed on the same axle, and the two is insulated from each other, can they be moved relative to each other by two flash of light upset hydraulic cylinders that link with them; Flash of light upset hydraulic cylinder is installed in the kernel of section of institute's welding steel rail, and has bimetallic conduction piston rod; Utilize the conduction connecting rod, the current-carrying part of the piston rod by flash of light upset hydraulic cylinder links to each other two welding transformers with the current-carrying part of claw; Claw is made the monoblock type rod iron, and the copper overlay is arranged on current-carrying part.
The spring heading is installed in the claw, is used for the steel rail rolling face is pressed onto on the support that is installed in pincerlike claw edge.Generally speaking, in all flash-butt welding equipment, (comprise above-mentioned immediate equipment) following defective all arranged with pincerlike chuck:
1. the power of upset and clamping is limited, make and to weld relatively short rail section, and can not weld long rail section, and the rail that links to each other with sleeper can not be welded when perhaps in finite time, repairing rail, perhaps can't the welded closed banjo fixing butt jointing when laying gapless rail.
2. this design performance is poor, and reliability is low.In this design; by the annular projection of piston rod current-carrying part and by the bar of the piston rod of band projection and strap bolt being pulled in clamping ring together; the bimetal piston bar of flash of light upset hydraulic cylinder is fixed on the bar wall of actionless pincerlike chuck; this has just weakened the bar wall; the ability variation that the piston rod of its protection flash of light upset cylinder avoids spattering the motlten metal spark, the motlten metal spark has splashed a lot of places in the weld zone.Pull down from welding equipment for the upset hydraulic cylinder that will glisten, just have to many parts of appliance are taken apart.
3. the spring heading that is installed on the claw can not guarantee the steel rail rolling face is pressed on the support of pliers type clip head reliably, so just can not guarantee that rail centering is good.
4. need clamping a period of time to strengthen the banjo fixing butt jointing that is welded when operating the said equipment; Open a dop of welding equipment, again clamp dop again, this needs extra time, and during this period of time burr cools off, removing burr needs sizable power and big energy consumption, welded closure banjo fixing butt jointing when this just can not weld above-mentioned long section rail and lay gapless rail.Because exist burr to remove the self poisoning problem of cutter, remove the degradation of burr.
Basic purpose of the present invention is a kind of flash-butt welding rail welder of invention, wherein, owing to increased the design feature of new parts, this new parts, the new design (tandem hydraulic cylinder) of flash of light upset hydraulic cylinder in the design of clamping hydraulic cylinder piston rod, the lower pressure that enters into the fluid of clamping hydraulic cylinder just is being transformed into elevated pressures under the situation of outside feeding pipe, thereby chucking power increases.Owing to adopted the tandem oil cylinder, upsetting force has also increased, and does not need to increase the diameter of flash of light upset hydraulic cylinder or pressure wherein.Thereby just can weld the long joining section rail, when repairing rail the rail that is fixed on the sleeper is welded, and when laying gapless rail the welded closure banjo fixing butt jointing, so just enlarged the function of this equipment; On equipment, increased burr remover, and this Design of device feature can so that cutter locate automatically according to the rail profile; After welding, just can under hot state, the rail of burr from be clipped in the equipment claw be removed with less power, so just make the weld cycle time decreased, boost productivity and reduce and remove the burr energy consumption.
Key point of the present invention is in the flash-butt welding rail welder, comprise that two pliers type clips making two double armed lever forms hold device, connected and insulated from each other by common axle, making two pliers type clips hold device by two flash of light upset hydraulic cylinders that are attached thereto and have a bimetallic conduction piston rod can relatively move along axle; One end of each double armed lever is hinged on respectively on the shell of piston rod or clamping hydraulic cylinder, and the other end is equipped with clamping claw and conduction claw; Two welding transformers are installed in the hollow double armed lever of one of two pincerlike gripping mechanisms, utilize the conduction bonding jumper to link to each other with the conduction claw by the current-carrying part of the piston rod of flash of light upset hydraulic cylinder, be provided with hydraulic intensifier in the clamping hydraulic cylinder, be installed in its piston rod, the return valve that has regulating spring and end bar is installed in the plunger rod of hydraulic intensifier, pressure valve is installed on the cap of hydraulic intensifier, this valve links to each other with the hydraulic intensifier chamber by inner valve, two flash of light upset hydraulic cylinders are all made the serial connection type, two pistons separate with dividing plate, are installed on the same piston rod of each hydraulic cylinder.
Because clamping hydraulic cylinder is shaped on hydraulic intensifier on its piston rod, the return valve that has regulating spring and end bar is installed in the plunger rod of hydraulic intensifier, pressure valve is installed on the cap of hydraulic intensifier, link to each other with hydraulic intensifier by this valve of inner valve, the clamping oil cylinder just can increase to elevated pressures from lower pressure automatically with the fluid that enters, and without any need for outside feeding pipe, this need not increase the diameter of clamping hydraulic cylinder with regard to having increased clamping force greatly.
Because two flash of light upset hydraulic cylinders are made serial connection type hydraulic cylinder, two pistons that separated by dividing plate in each hydraulic cylinder are contained on the common piston rod, thereby increased upsetting force, do not need to increase diameter of piston rod or internal pressure, so just can keep rail foot to arrive this equipment design minimum point, be that upset hydraulic cylinder bottom distance is identical, this is apart from having determined the height of rail in the lifting of railway basal plane.All these feasible closed and butted joints that can weld long joining section rail and continuous welded rail track, this has just enlarged the function of this equipment.
Essence of the present invention comprises that also the centering hydraulic cylinder is installed between the double armed lever of pincerlike chuck, hydraulic cylinder piston rod is fixedly secured, wherein one of available scheme is directly to be fixed on the axle, the another one scheme is to be fixed to be contained in putting on the axle, and the centering hydraulic cylinder is hinged on two bars, hook-type is made in the lower end of bar, and clamping device has the block on the axle of being installed in; And the bearing pin that can move in described bar groove is installed on the double armed lever of clamping device.This just makes rail along rolling surface centering and irrelevant with jam more reliably.
In addition, essence of the present invention also is, this welding machine also has burr remover, it comprises along whole peripheral three cutters that surround whole rail profile, two side direction cutters can move with respect to a pincerlike chuck, be hinged on the 3rd cutter in upper end, and be fixed on the piston rod of two auxiliary hydraulic cylinders in the clamping bar of one of two pincerlike chucks in the welding machine; The piston rod of each auxiliary hydraulic cylinder comprises two hinged parts, and the piston rod part that is connected with the side cutter can partly be rotated around the piston rod that is fixed with the auxiliary hydraulic cylinder piston.Because this welding machine also comprises burr remover, this device is by forming along whole peripheral three cutters that surround the rail profile, and the operation of welding and deburring is combined on the welding machine, so the function of this welding machine has just been expanded.
Because burr remover includes two two auxiliary hydraulic cylinders that are arranged in the clamping bar of a pincerlike chuck, two side cutters are thereon affixed, the clamping time of welding back enhancing welding point has just saved, simultaneously when also need not be again during operation from a technology operational transition to another technology clamping rail again, just when when welding forwards deburring to, the stationary state when rail still remains on welding.Closed and butted joint when welded long rail section and laying gapless rail, this point particular importance.In this case, burr just has been removed under the hot state of postwelding, and used power is less than selected device as original model machine, and energy consumes low.The production efficiency of this process has just improved.
Because each piston rod of auxiliary hydraulic cylinder is all made the two parts that are hinged, the piston rod part that has cutter can be rotated with respect to the piston rod section axial of band piston, thereby cutter just can be located automatically along the rail profile.
Can improve the quality of removing burr like this.
The present invention is further detailed explanation below in conjunction with drawings and Examples, wherein
Fig. 1 is the side view of described welding machine.
Fig. 2 is an end-view.
Fig. 3 is the cutaway view that cuts open the upset cylinder of getting along B-B line among Fig. 1.
Fig. 4 is the cutaway view that cuts open the clamping cylinder of getting along the A-A line of Fig. 2.
Fig. 5 cuts open the cutaway view of getting along Fig. 1 central axes C-C.
Fig. 6 is the enlarged drawing at D place among Fig. 3.
Fig. 7 be from Fig. 3 E to the clamping claw of being looked with contact claw.
Fig. 8 is the cutaway view along the contact claw of F-F line intercepting among Fig. 7.
Fig. 9 is the sectional view along the last press mechanism of the G-G line intercepting of Fig. 1.
Figure 10 is the view of the burr removal device looked along Fig. 3 H arrow.
Welding machine is formed (Fig. 1) by two pliers type clip heads 1 and 2.Each pliers type clip head comprises two double armed levers 3 and 4 (Fig. 2), is installed on the common axle 5, and each pliers type clip head is driven by two flash of light upset cylinders 6 that connect them and have a bimetallic conducting rod 7 (Fig. 3), can relatively move on axle.Pliers type clip head 1 is insulated from each other along three piston rods that are connected them with 2, and the end of each is hinged with the piston rod or the shell of clamping hydraulic cylinder 8 respectively in the double armed lever 3 and 4, and the other end is equipped with clamping claw 9 and conduction claw 10 (Fig. 3).Two welding transformers 11 (Fig. 3) are installed in each double armed lever 3,4 of one of pliers type clip head, and utilize conduction bonding jumper (jumper) 12 with 13 by flash of light hydraulic cylinder 6 bimetal piston bar 7 current-carrying part with conduct electricity claw 10 and link to each other.Each clamping hydraulic cylinder 8 (Fig. 4) comprises shell 14, the working piston 15 that has piston rod, the piston rod of piston 15 also is a hydraulic force multiplier device cylinder body simultaneously herein, and piston 16 and plunger 17 are installed in it, and the area of piston 16 and plunger 17 is than the pressure increment corresponding to working piston 15.Return valve 18 has the spring 19 of regulating required pressure, is installed in the plunger 17 of hydraulic force multiplier device, and return valve 18 has an end bar 20, and end bar 20 reaches the low order end initial position and opens return valve when being resisted against on the cap 21 of hydraulic force multiplier device when plunger 17.
In order to be transformed into multiplication pressure automatically by the oil pressure that oil pump infeeds in the primary work loop, a pressure valve 22 is installed on the cap 21, and is communicated with each chamber of hydraulic force multiplier device " α " and " γ " by inner passage " a " and " b ".Pressure valve 22 comprises shell 23, guiding valve 24 and regulating spring 25 and return valve 26.
Flash of light upset hydraulic cylinder 6 (Fig. 3) make the tandem hydraulic cylinder.Here, in each hydraulic cylinder, two pistons 27 and 28 are installed on same piston rod, separate by dividing plate 29.Each upset hydraulic cylinder 6 that glistens is connected and concurrent working by common pipeline, is driven by servo drive or hydraulic force multiplier device according to command unit (not shown) preset program.When flash of light and upset, simultaneously oil is sent in chamber " ε " and " η ", when claw is separated, hydraulic oil is transported to chamber " ν " and " ι ".
The bimetal piston bar 7 of flash of light upset hydraulic cylinder is made up of two parts: bronze current-carrying part 30 and copper part 31 (Fig. 4), and both are by spiral marking connection; Piston rod bronze current-carrying part 30 be water-cooled and by rubber ring 32 sealings.The bronze current-carrying part 30 of piston rod has a groove, and two semicircular ring 33 are inserted in wherein (Fig. 6), by the detachable ring 34 of integral body it is fastened in the groove.Here, the piston rod 7 that has a current-carrying part is inserted in the double armed lever 3 and 4 cinclides of actionless pincerlike chuck 1, and insulation with it, up to being close to semicircular ring 33 and fixing by nut 35.Clamp steel claw 9 and contact bronze claw 10 and be separated from each other, respectively comprise two parts (Fig. 7-8), substrate 36 and quick-detach liner 37 soon are used for admitting the rail web.Here, in the bronze claw substrate boring is arranged, be used for leading to cooling water.
Each hydraulic cylinder 38 that is used for the rail calibration is between each double armed lever of clamping device (Fig. 9).The piston rod 39 of calibration solution cylinder pressure is connected in axle 5 (Fig. 2 and Fig. 5) respectively or overlaps on 40.The calibration cylinder is articulated on two bars 41, two bars 41 link to each other with axle 42 on the double armed lever that is fixed on clamping device by means of the intermediate portion, and a cannelure arranged, and can vertically move, and the hook-type lower end of the enough bars 41 of energy clamps the head of rail during last hydraulic fluid cylinder pressure upward stroke, the steel rail rolling face is pressed against on the block of pincerlike chuck 43, so just rail has been fixed in one plane.
Burr removal device (Figure 10) is installed on two double armed levers of pincerlike chuck of welding machine, and comprise 3 cutters: two side direction cutters 44 and 45 and upper knife 46 hinged with the side direction cutter, the three surrounds the profile of rail fully. Side direction cutter 44,45 links to each other with the piston rod 47 of hydraulic cylinder 48 (Fig. 3), and bar 47 is contained in the double armed lever.The piston rod 47 of hydraulic cylinder 48 comprises the two parts that are hinged, and the part that the equipped part on it of the side direction cutter of piston rod can install with respect to the piston of piston rod on it is rotated, and so just can pass through the rail profile with self poisoning.
When closing and opening the pincerlike chuck of welding machine, upper knife 46 can be so that the side direction cutter freely passes through below rail foot with the articulated joint of side direction cutter 44 and 45, and the burr of rail foot is sheared in side direction cutter bottom.
Be connected to by the flow divider (not shown) that will know in the hydraulic technique in the feed flow pipeline of hydraulic cylinder 48, thereby just can be implemented in the same moved further of three cutters of hydraulic cylinder piston when removing burr.
This equipment running is as follows:
At initial position, before clamping by the end of welding steel rail, pincerlike chuck 1 and opening in 2 minutes, double armed lever 3,4 opens simultaneously, and multiplier plunger 17 is in the low order end position, and return valve 18 is opened.Clamp guiding valve at meta (the welding machine hydraulic circuit diagram does not show).Welding machine reduces the rail that is beneficial to contact through scraping in the end with its clamping claw closing.Clamp guiding valve and move to " clamping " position, its pressure from oil pump injects two pressure valve 22 (clamping of two end of rail takes place simultaneously) by the road simultaneously by the oil that pressure-reducing valve is set at P1, and be injected into chamber " γ " through passage " c " and " a ", simultaneously via the boring in return valve of opening 18 and the multiplier plunger, hydraulic oil enters into the chamber " λ " of working piston 15, piston 15 begins to move together with piston rod, rotate double armed lever 3 around axle 5 simultaneously, 4, little by little clamp the rail web by contact claw 10 and clamping claw 9, the oil pressure P in clamping force and the major loop and the product of working piston 15 areas are directly proportional.Simultaneously, pressure is P
1The passage " b " of hydraulic oil through guiding valve 24 belows enter into chamber " α ", reaching at full capacity pressure P
1After, along with the pressure that carries out that clamps rises, compression adjustment spring 25 is also pushed guiding valve 24 to right-hand member, so just makes hydraulic oil pass through the multiplier chamber " α " that passage " b " enters into piston 16; Piston 16 begins to be moved to the left together with plunger 17, and end bar 20 moves apart and covers 21, and return valve 18 cuts out, and the pressure in the chamber of piston 15 " λ " will rise, and reaches the difference of two squares that its value equals the diameter of piston 16 and plunger 17 and multiply by pressure P
1Multiplication pressure, so just under the pressure condition that is proportional to multiplication pressure, realize the final clamping of rail.
After clamping rail, export a signal so that begin to glisten and upset subsequently, this is all carried out automatically by default program, and here, pressure is P
1Hydraulic oil penetrate into the chamber " ε " of two flash of light upset hydraulic cylinders 6 and " η " simultaneously (Fig. 3), and pincerlike chuck 1 and 2 is pulled to each other by means of bimetal piston bar 7, flash of light takes place, and carries out upset (quick end of rail with surface melting draws and is close together) in the predetermined moment of program.After finishing welding, remove burr (removing a metal oxide and the high part of weld seam projection).
As follows from the get on device course of work of flash removed of rail.When rail was clamped by pincerlike chuck, this installed the profile that each cutter surrounds rail fully, and side direction cutter 44 and 45 (Figure 10) adapts to the rail profile owing to can rotating around the axis of hydraulic cylinder 48 (Fig. 3), just can positioning oneself here.After rail welding is finished, under the situation in rail still is clamped in the welding machine jaw, when burr still is in the state of heat, send out the signal of flash removed, fluid enters into the piston chamber of hydraulic cylinder 48 by flow divider, in order to remove burr.Hydraulic cylinder piston is in the burr under the state of heat with removal with moved further along rail together with piston rod 4 and cutter 44,45 and 46 (Figure 10).After burr was removed, the pincerlike chuck of welding machine was opened together with cutter 44,45 and 46, unclamps rail.The piston of hydraulic cylinder 48 turns back to initial position together with piston rod and cutter.
Send the signal that rail is discharged from clamp position.Clamping guiding valve (not shown) moves to " opening " position, and the passage of pressure valve 22 " c " links with the earial drainage loop, when the pressure P of major loop
1When putting on the passage " q " of clamping hydraulic cylinder 8, hydraulic oil enters in the chamber " σ ", and piston 15 and hydraulic cylinder shell 14 are pulled in together, and double armed lever 3,4 is rotated around axle 5, so just from clamping claw and contacting the rail that claw 9 and 10 releases weld, pressure is P simultaneously
1Hydraulic oil enter into the chamber " " of multiplier by the passage of piston 15, the piston 16 and the plunger 17 of multiplier is pulled away to the low order end position, the end bar 20 compression adjustment springs 21 on the cap 21 are also opened valve 18.Last at opening procedure, working piston 15 moves to the high order end position, and piston 16 and plunger 17 move to the low order end position.Be pulled away from by two-way guiding valve is switched to, the hydraulic oil in flash of light upset hydraulic cylinder chamber " ε " and " η " is connected on the earial drainage loop, and is P with pressure
1Oil be sent to chamber " ν " and " ι ", so pincerlike chuck 1 and 2 just is pulled away from and is moved to initial position each other.
Claims (4)
1. flash-butt welding rail welder, comprise two pincerlike clamping devices that are made for two double armed lever forms, these two pincerlike clamping devices are fitted on the common axle, both are insulated from each other, and can relatively move along described axle by two flash of light upset hydraulic cylinders that connect them and have a bimetallic conduction piston rod; One end of each double armed lever is hinged on the piston rod or shell of clamping hydraulic cylinder, disposes on the other end to clamp long pawl and conduction claw; Two welding transformers are installed in the hollow double armed lever of one of two pincerlike clamping devices, utilize the conduction bonding jumper to be connected in the conduction claw by the current-carrying part of flash of light upset hydraulic cylinder piston rod, it is characterized in that, the clamping hydraulic cylinder is fitted with the hydraulic force multiplier device in its piston rod, a return valve that has regulating spring and end bar is installed in the plunger rod of hydraulic force multiplier device, one pressure valve is installed on the hydraulic force multiplier device cap, this valve links by inner valve and each chamber of hydraulic force multiplier device, and two flash of light upset hydraulic cylinders are made the pattern of tandem hydraulic cylinder, and two pistons that separated by a dividing plate are installed in the common bimetallic of one in each hydraulic cylinder and conduct electricity on the piston rod.
2. flash-butt welding rail welder as claimed in claim 1, it is characterized in that, each claw is made up of two independent parts: inner conduction bronze part and outside steel part, the bronze part of jaw and steel part also all are made up of two parts: substrate and be inserted in intrabasement replaceable wear-resisting part, the bronze substrate partly of claw is equipped with cooling system.
3. flash-butt welding rail welder as claimed in claim 1 or 2, it is characterized in that, the rail calibration is installed between the double armed lever of clamping device with hydraulic cylinder, the piston rod of this hydraulic cylinder directly is fixed on the welding machine axle securely or is fixed on the sleeve that is fitted on the axle, and the calibration solution cylinder pressure is articulated on two bars, hook-type is made in described bar lower end, described clamping device has the block on the axle of being installed in, and the bearing pin that can move in the groove of described bar is installed on each double armed lever of clamping device.
4. as each described flash-butt welding steel wheel welding machine in the claim 1 to 3, it is characterized in that, described welding machine also is equipped with burr remover in addition, this device comprises three cutters that surround the rail profile along whole periphery, two side cutters are mounted to and can rotate with respect to a pincerlike clamping device, they be articulated in the upper end the 3rd cutter on and be installed on the piston rod of two auxiliary hydraulic cylinders, these two auxiliary hydraulic cylinders are installed in the clamping bar of one of two pincerlike clamping devices of welding machine, each piston rod of these two auxiliary hydraulic cylinders all is made up of hinged each other two parts, and the part that is fixed with the side cutter on its of piston rod can be rotated with respect to the part that is fixed with the auxiliary hydraulic cylinder piston on its of piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98106266 CN1110398C (en) | 1998-02-04 | 1998-02-04 | Welder for flash butt welding steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98106266 CN1110398C (en) | 1998-02-04 | 1998-02-04 | Welder for flash butt welding steel rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1257768A true CN1257768A (en) | 2000-06-28 |
| CN1110398C CN1110398C (en) | 2003-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98106266 Expired - Fee Related CN1110398C (en) | 1998-02-04 | 1998-02-04 | Welder for flash butt welding steel rail |
Country Status (1)
| Country | Link |
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| CN (1) | CN1110398C (en) |
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| CN101979208A (en) * | 2010-10-12 | 2011-02-23 | 宁波信泰机械有限公司 | Flash butt welding machine for vehicle door corner welding |
| CN102665994A (en) * | 2009-10-30 | 2012-09-12 | 新日本制铁株式会社 | Flash-butt welding method for rail steel |
| CN102861978A (en) * | 2011-07-08 | 2013-01-09 | 乌克兰国家科学学会E.O.派顿电子焊接协会 | Machine for flash-butt welding of rails |
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- 1998-02-04 CN CN 98106266 patent/CN1110398C/en not_active Expired - Fee Related
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| CN102665994A (en) * | 2009-10-30 | 2012-09-12 | 新日本制铁株式会社 | Flash-butt welding method for rail steel |
| US9617690B2 (en) | 2009-10-30 | 2017-04-11 | Nippon Steel & Sumitomo Metal Corporation | Flash butt welding method of rail steel |
| CN102665994B (en) * | 2009-10-30 | 2015-04-01 | 新日铁住金株式会社 | Flash-butt welding method for rail steel |
| CN101979208A (en) * | 2010-10-12 | 2011-02-23 | 宁波信泰机械有限公司 | Flash butt welding machine for vehicle door corner welding |
| CN101979208B (en) * | 2010-10-12 | 2013-02-13 | 宁波信泰机械有限公司 | Flash butt welding machine for vehicle door corner welding |
| CN102861978A (en) * | 2011-07-08 | 2013-01-09 | 乌克兰国家科学学会E.O.派顿电子焊接协会 | Machine for flash-butt welding of rails |
| CN102861978B (en) * | 2011-07-08 | 2016-12-14 | 乌克兰国家科学学会E.O.派顿电子 焊接协会 | Machine for the flash butt welding of track |
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| CN103042294B (en) * | 2011-10-15 | 2014-12-10 | 常州市瑞泰工程机械有限公司 | Direct current welder |
| CN103042294A (en) * | 2011-10-15 | 2013-04-17 | 常州市瑞泰工程机械有限公司 | Direct current welder |
| CN103042300B (en) * | 2011-10-15 | 2015-12-16 | 常州市瑞泰工程机械有限公司 | Welder frame |
| CN103047522A (en) * | 2011-10-15 | 2013-04-17 | 常州市瑞泰工程机械有限公司 | Leveling lifting appliance |
| CN103042300A (en) * | 2011-10-15 | 2013-04-17 | 常州市瑞泰工程机械有限公司 | Welding machine frame |
| CN103331554A (en) * | 2013-07-24 | 2013-10-02 | 常州市瑞泰工程机械有限公司 | Positioning clamping device for nonsymmetrical rails |
| CN103331554B (en) * | 2013-07-24 | 2015-07-29 | 常州市瑞泰工程机械有限公司 | A kind of asymmetric rail positioning clamping device |
| CN107262894A (en) * | 2017-07-18 | 2017-10-20 | 中国铁道科学研究院金属及化学研究所 | Steel rail flash welding machine with interrupt central shaft |
| CN107262894B (en) * | 2017-07-18 | 2023-11-03 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Rail flash welder with interrupted central shaft |
| CN107553097A (en) * | 2017-10-11 | 2018-01-09 | 泰州学院 | The automatic assembly equipment that a kind of flexible pipe is connected with joint |
| CN115401292A (en) * | 2022-05-11 | 2022-11-29 | 中北大学 | Wire connecting equipment and method for magnesium alloy electric arc additive manufacturing |
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| CN1110398C (en) | 2003-06-04 |
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