CN204803371U - A thermal treatment machine for bainite steel rail alumino thermic welding joint - Google Patents
A thermal treatment machine for bainite steel rail alumino thermic welding joint Download PDFInfo
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- CN204803371U CN204803371U CN201520537667.5U CN201520537667U CN204803371U CN 204803371 U CN204803371 U CN 204803371U CN 201520537667 U CN201520537667 U CN 201520537667U CN 204803371 U CN204803371 U CN 204803371U
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Abstract
The utility model discloses a thermal treatment machine that bainite steel rail aluminothermy connects, the heater is drawn together to this thermal treatment press packed bale, and the heater includes: the body, central authorities' through -hole, central through -hole setting body central authorities and have can with the cross section matched with shape of pending rail, the air flue, the air flue is linked together with the external heating gas source through the air inlet that sets up at the body top, and the air flue sets up at the wide face of this central through -hole in internal edge, and one side of the central through -hole of air flue orientation is provided with a plurality of gas pockets in order to be linked together through a plurality of gas pockets and central through -hole, and the water course, the water course is linked together through water inlet and outside water source, and passes through the circulating water in the delivery port discharge water course, and the water course surrounds the air flue setting so that the heater keeps at the normal atmospheric temperature state in the body. This thermal treatment machine has effectively improved machine life through the scheme that reduces the complete machine temperature to accomplish accurate centering operation and swing operation, make to the thermal treatment of rail welding seam even more effectively.
Description
Technical field
The utility model relates to rail welding Field of Heat-treatment, more specifically, relates to a kind of heat-treating machine for bainite rail joint made by alumino-thermal weldin.
Background technology
Because heavy haul railway path wear is serious, therefore, adopting high-strength material and improve its wear resistance is the preferred method extending rail work-ing life.The rail of bainite material, due to the intensity of superelevation and good toughness, is extremely suitable for heavy haul railway circuit.In recent years, bainite rail is progressively promoted the use of.
As continuous welded rail track circuit, the rail of finite length must carry out welding and could form gapless track, and bainite rail welding is also the work that must carry out.
The welding on the line of part bainite rail must adopt thermite welding method to complete.The thermit welding technology of bainite rail is comparatively complicated, and the mechanical property of welding joint is second-rate, can not show a candle to common pearlite type rail.The ropy major cause of bainite rail joint made by alumino-thermal weldin is that the alloying constituent of bainite rail is higher, and the weld seam of postwelding and overheated zone not only segregation are serious, and metal microstructure differs greatly, and austenite crystal is thick simultaneously.
Bainite rail joint made by alumino-thermal weldin is heat-treated, can the crystal grain of significantly refinement bainite joint made by alumino-thermal weldin, microstructure homogenizing, thus the mechanical property increasing substantially bainite joint made by alumino-thermal weldin, improve the work-ing life of bainite joint made by alumino-thermal weldin.
The application number bainite rail welding joint heat treating method that has been the Introduction To Cn Patent of 201410135909.8, bainite rail welding joint Principles of Heating Processing are introduced, but be not described in detail for bainite thermit welding, also do not mention concrete bainite rail joint made by alumino-thermal weldin equipment for Heating Processing and technique.
The patent No. is that the Chinese patent " thermal treatment unit of steel rail weld joint and well heater thereof " of ZL2009102428395 discloses one and is used in steel rail weld joint treatment unit and well heater thereof, wherein well heater comprises multiple fire hole, and heating material, the fire hole degree of depth, diameter, number and layout are specified, but this equipment well heater adopts the anhydrous type of cooling, be only applicable to WELDING JOINT, the thermal treatment of bainite joint made by alumino-thermal weldin cannot be applied to.The heat treated feature of bainite rail thermit welding is requirement not only joint homogeneous heating, meanwhile, also requires " low temperature " heating and Slow cooling.Because the alloying constituent of bainite rail is higher, the segregation degree of material is higher, particularly after welding, weld seam and weld overheated zone, not only organize thick, meanwhile, local is higher along the alloying constituent of grain boundary area, easily crack, the martensitic stucture etc. of crystal boundary local melting and high rigidity, the mechanical property of joint is very low.For this reason, be badly in need of providing a kind of aluminum weld equipment for Heating Processing for bainite rail aluminum weld feature.
Utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of bainite rail joint made by alumino-thermal weldin heat-treating machine, this bainite rail joint made by alumino-thermal weldin heat-treating machine comprises:
Well heater, well heater comprises:
Body;
Center through hole, center through hole is arranged on body center, and center through hole has the shape that can match with the cross section of pending rail;
Air flue, air flue is connected with indirect heating gas source by the inlet mouth being arranged on the top of body, and the wide face of air flue along center through hole in body is arranged, air flue is provided with multiple pore to be connected with center through hole by multiple pore towards the side of center through hole; With
Water channel, water channel is connected with external water source by the water-in at the top being arranged on body, and discharges the recirculated water in water channel by the water outlet at the top being arranged on body, and water channel is arranged around air flue to make well heater remain on normal temperature state in body.
Further, well heater is divided into two portions along the short transverse of rail cross section, and well heater can be combined with rail in the mode of opposite opened.
Further, the every one end in the two ends at the top of body is all provided with inlet mouth, water-in and water outlet.
Further, heated air is propane.
Further, water channel also comprises the square tube be arranged on along center through hole on body surface, and the two ends of square tube are connected with the water channel being arranged on body interior, and the side of square tube and air flue adjacent.
Further, heat-treating machine also comprises tilting mechanism, centering regulating mechanism and drive unit, and centering regulating mechanism and tilting mechanism are arranged on the same side of well heater,
Wherein:
Tilting mechanism is connected with the mode that the location square hole being arranged on well heater side matches by the location square be arranged on tilting mechanism with well heater, and tilting mechanism is provided with linear bearings, tilting mechanism is used for fixed heater and drives well heater to swing in heat treatment process;
Centering regulating mechanism comprises front rail head retaining plate and rear rail head retaining plate, and the central authorities of front rail head retaining plate and rear rail head retaining plate are respectively arranged with " n " nibs matched with rail head cross section, be connected with fixed base plate between front rail head retaining plate with rear rail head retaining plate, and fixed base plate is provided with track, linear bearings can be slided in orbit, and centering regulating mechanism is for being fixed on rail by heat-treating machine; And
Drive unit is connected with tilting mechanism.
Further, a side towards rail of " n " nibs of front rail head retaining plate and " n " nibs of rear rail head retaining plate is respectively arranged with front standing bolt and rear standing bolt, and the side away from well heater of rear rail head retaining plate is provided with vertical adjustment bolt.
Further, the position that fixed base plate is connected with rear rail head retaining plate is provided with the bolt slot of length direction perpendicular to the length direction of fixed base plate, is connected by fixed base plate by the bolt be arranged in bolt slot with rear rail head retaining plate.
Further, centering regulating mechanism also comprises thermal baffle, and thermal baffle is arranged on the side towards well heater of front rail head retaining plate, and thermal baffle has and " n " nibs of aligning identical with " n " nibs; Preferably, a part for thermal baffle tilts to fixed base plate direction.
Further, tilting mechanism also comprises:
U-shaped plate, rail head can be accommodated in U-shaped plate;
Two connect stringer board, and two connect stringer board along rail length direction respectively by being bolted on two side direction vertical plates of U-shaped plate;
Two well heater retaining plates, two well heater retaining plates are separately fixed at one end away from U-shaped plate that two connect stringer board, to be fixed on tilting mechanism by well heater; With
Swing arm, swing arm is arranged on the top of U-shaped plate and is connected with drive unit, and swing along track length direction to control tilting mechanism, swing arm comprises:
Rocker arm support, rocker arm support is arranged on U-shaped plate;
Rocking arm, one end of rocking arm is connected by rotating shaft with rocker arm support; With
Swivel arm, swivel arm is connected with the other end of rocking arm by rotating shaft.
Further, well heater retaining plate comprises:
Well heater backup plate, well heater backup plate is arranged on the one end away from U-shaped plate connecting stringer board, and the plane orthogonal of well heater backup plate is in the length direction connecting stringer board; With
Rotary handle, rotary handle is arranged on the side towards well heater on well heater backup plate, to lock the well heater be positioned on tilting mechanism.
Further, heat-treating machine also comprises the rail head stay-warm case for carrying out isothermal holding to the rail head after thermal treatment, and rail head stay-warm case comprises:
Stay-warm case shell, the central authorities of stay-warm case shell have the through hole matched with rail head appearance; With
Stay-warm case liner, stay-warm case liner is attached to the inside of stay-warm case shell.
Disclosed in the utility model, bainite rail joint made by alumino-thermal weldin heat-treating machine has the following advantages: 1. the temperature effectively reducing well heater, tilting mechanism and centering regulating mechanism in bainite rail thermit welding heat treatment process, thus extends complete machine work-ing life; 2. the mode by passing into water coolant in water channel cools well heater and adopts cooling gas cooling heater mode more effectively and safety relative to tradition; 3. centering regulating mechanism and tilting mechanism are set, make heat treatment process accurately stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bainite rail joint made by alumino-thermal weldin heat-treating machine according to the utility model embodiment;
Fig. 2 is the front view of the well heater of bainite rail joint made by alumino-thermal weldin heat-treating machine according to the utility model embodiment;
Fig. 3 is the stereographic map of the well heater of bainite rail joint made by alumino-thermal weldin heat-treating machine according to the utility model embodiment;
Fig. 4 is the stereographic map of the tilting mechanism of bainite rail joint made by alumino-thermal weldin heat-treating machine according to the utility model embodiment;
Fig. 5 is the stereographic map of the centering regulating mechanism of bainite rail joint made by alumino-thermal weldin heat-treating machine according to the utility model embodiment; With
Fig. 6 is the stereographic map of the stay-warm case of cutting somebody's hair of bainite rail joint made by alumino-thermal weldin heat-treating machine according to the utility model embodiment.
Embodiment
Describe illustrative, non-limiting example of the present utility model with reference to the accompanying drawings in detail, be further described according to the heat-treating machine for bainite rail joint made by alumino-thermal weldin of the present utility model.
Fig. 1 is the structural representation of the heat-treating machine for bainite rail joint made by alumino-thermal weldin according to the utility model embodiment, and this heat-treating machine comprises well heater 100.Well heater 100 is provided with center through hole 118, and center through hole 118 can match to heat-treat steel rail weld joint with the cross section of pending rail 400.
With reference to Fig. 2 and Fig. 3, well heater 100 comprises body 114, center through hole 118, air flue (not shown), inlet mouth 112, pore 117, water channel (not shown), water-in 111 and water outlet 113.Center through hole 118 is arranged on the central authorities of body 114 and can matches with the cross section of pending rail 400.Air flue is arranged along the wide face of center through hole 118, is connected with indirect heating gas source by inlet mouth 112, and this air flue is provided with multiple pore 117 in order to be connected with center through hole 118 towards the side of center through hole 118.Air flue being provided with water channel, for lowering the temperature to this heat-treating machine, to make can keep at normal temperatures in its working process, thus extending the work-ing life of well heater 100.
Body 114 is agent structures of the well heater 100 according to the heat-treating machine for bainite rail thermit welding of the present utility model, for forming the structures such as center through hole 118, air flue and water channel thereon.
Center through hole 118 is arranged on body 114 central authorities, center through hole 118 has the shape that can match with the cross section of pending rail 400, make pending rail 400 to pass center through hole 118, and utilize the weld seam of the multiple pores 117 pairs of rail 400 arranged on the wide face of center through hole 118 to heat-treat further.
It is inner that air flue (not shown) is arranged on body 114, and arrange along the wide face of center through hole 118, is connected with indirect heating gas source by the inlet mouth 112 being arranged on body 114 top.Air flue is provided with multiple pore 117 towards center through hole 118 side, and air flue is communicated with center through hole 118 by pore 117, makes the gas in air flue can spray to heat steel rail welding line through pore 117.It will be understood by those skilled in the art that the layout of pore 117 on air flue can be equably, the spacing namely between adjacent two pores 117 is equal; The layout of pore 117 on air flue also can be unevenly, namely can design the density of the pore 117 of corresponding position according to the thickness of the rail head of steel rail welding line to be heated, the web of the rail and the flange of rail.Preferably, above-mentioned heated air is propane, to meet the heat treated needs of bainite rail joint made by alumino-thermal weldin.
Water channel is arranged around air flue in body 114, well heater 100 make under in heat treatment process, can remain on normal temperature state, and water channel is connected with external water source by the water-in 111 being arranged on the top of body 114, and discharge the recirculated water in water channel by the water outlet 113 being arranged on body 114 top.Well heater 100 heats in the mode of the weld seam flame around rail 400, so the rising of well heater 100 self-temperature can be caused in rail 400 heat-processed, and well heater 100 long term operation can cause the shortening in well heater 100 work-ing life at high operating temperatures, so the utility model utilizes recirculated water to reduce the temperature of well heater 100 entirety by the mode arranging water channel in the body 114 of well heater 100, and then improve the work-ing life of well heater 100.
Preferably, water channel also comprises the square tube 115 be arranged on along center through hole 118 on body surface, the two ends of this square tube 115 are connected with the water channel of body interior, and side and the air flue of square tube 115 are adjacent, effectively can improve the cooling performance to well heater 100, solve air flue and the clover leaf problem of water channel simultaneously.
Further, well heater 100 is divided into two portions along the short transverse of rail 400, thus well heater 100 can be combined with rail profile in the mode of opposite opened.Well heater 100 being installed from being merged by rail profile both sides, conveniently well heater 100 being matched with rail 400.
Preferably, be divided in two-part embodiment at above-mentioned well heater 100, the every one end in the two ends at the top of body 114 is all provided with inlet mouth 112, water-in 111 and water outlet 113.When heat-treating the weld seam of rail 400, heated air is entered by inlet mouth 112, flows to rail head, the web of the rail and the flange of rail in the drift angle punishment of body 114, and heated air sprays from pore 117 and burns and to heat with butt welded seam.Simultaneously, recirculated water enters body 114 from water-in 111, position in the middle part of rail head is entered along water-in 111, then enter in square tube 115 by the water channel of body interior and the connecting hole of square tube 115, and the mid-way of rail foot is flow to along square tube 115, flow in the water channel of body 114 inside by the other end of square tube 115 and the connecting hole of body 114 internal water channel again, at body 114 internal water channel internal circulation flow to water outlet 113, complete the refrigeration cycle of well heater 100.Make to be cooled with circulating water to two portions of well heater 100 respectively in heat-processed, the loss of high temperature to well heater 100 can be reduced, thus extend the work-ing life of well heater 100.
With reference to Fig. 1, Fig. 4 and Fig. 5, the heat-treating machine for bainite rail joint made by alumino-thermal weldin according to the utility model embodiment also comprises tilting mechanism 300, centering regulating mechanism 200 and drive unit 600.Tilting mechanism 300 and centering regulating mechanism 200 are arranged on the same side of well heater 100, for being fixed on rail 400 by according to the heat-treating machine of the utility model embodiment, and centering adjustment is carried out to match with steel rail welding line to be heated to the position of well heater 100.
Tilting mechanism 300 is provided with location square 302 and linear bearings 306.Location square 302 can match with the location square hole 116 on well heater 100, thus well heater 100 is located on tilting mechanism 300, realize the effect of the position of fixed heater 100, and driving well heater 100 to swing in a certain direction on fixed position further, concrete swing process will elaborate hereinafter.Linear bearings 306 can match with the track 205 on centering regulating mechanism 200, and tilting mechanism 300 can be moved along track 205, and drives well heater 100 to swing to reach the effect to steel rail welding line homogeneous heating on track 205 length direction further.
Drive unit 600 is connected with tilting mechanism 300, for driving this tilting mechanism 300 to swing, and drives the swing of well heater 100 further.Drive unit 600 can drive well heater 100 to swing centered by steel rail welding line along rail length direction, makes well heater 100 can cover all zones being subject to welding impact to the heated perimeter of steel rail welding line, reaches better thermal effectiveness.
Centering regulating mechanism 200 comprises front rail head retaining plate 202 and rear rail head retaining plate 206, and the central authorities of front rail head retaining plate 202 and rear rail head retaining plate 206 are respectively arranged with " n " nibs matched with rail head cross section, " n " nibs should be used for rail head being contained in front rail head retaining plate 202 and rear rail head retaining plate 206, thus play the object be fixed on by well heater 100 on rail 400.Fixed base plate 204 is used to be connected between front rail head retaining plate 202 with rear rail head retaining plate 206.Fixed base plate 204 is provided with track 205, track 205 can match with the linear bearings 306 on tilting mechanism 300, tilting mechanism 300 can be moved along this track 205, and drive well heater 100 to swing to reach the effect to steel rail welding line homogeneous heating on track 205 length direction further.When use is heat-treated according to the weld seam of heat-treating machine to rail 400 of the utility model embodiment, centering regulating mechanism 200 is needed to be fixedly connected with rail 400, now, first by rail head retaining plate 202 before the rail head of pending rail 400 insertion centering regulating mechanism 200, reach the object of fixing centering regulating mechanism 200; Rear rail head retaining plate 206 and fixed base plate 204 can relatively transverse shiftings, thus after regulating rail head retaining plate 206 and pending rail 400 perpendicular to the position on rail length direction, thus centering adjustment is carried out to well heater 100.Centering regulating mechanism 200 adopts the scheme of front rail head retaining plate 202, rear rail head retaining plate 206 and fixed base plate 204 to be fixed on by heat-treating machine on pending rail 400, and carries out centering adjustment to well heater 100, ensures that heat treatment process is stable and carries out.
Further, a side towards rail 400 of " n " nibs of the front rail head retaining plate 202 of centering regulating mechanism 200 and " n " nibs of rear rail head retaining plate 206 is respectively arranged with front standing bolt 203 and rear standing bolt 209, and the side away from well heater 100 of rear rail head retaining plate 206 is provided with vertical adjustment bolt 208.When using heat-treating machine to heat-treat steel rail welding line, first by " n " type structure of rail head retaining plate 202 before the railhead part of rail 400 insertion centering regulating mechanism 200, then standing bolt 203 before front rail head retaining plate 202 is locked, complete the operation of fixing centering regulating mechanism 200.Rear standing bolt 209 on rear rail head retaining plate 206 is locked, rear rail head retaining plate 206 can be fixed on pending rail 400.Unclamp front standing bolt 203 and rear standing bolt 209, fixed base plate 204 can be moved, thus regulate well heater 100 on rail head length direction relative to the position of steel rail welding line, complete centering regulate.Front standing bolt 203 and rear standing bolt 209 is tightened after centering has regulated.Unclamp rear standing bolt 209 rotary vertically to adjusting bolt 208, the position of rear rail head retaining plate 206 in rail 400 short transverse can be regulated, and then regulate well heater 100 in rail 400 short transverse with the position relationship of steel rail welding line, ensure that the pore 117 of well heater 100 the upper side and lower side is equal to the distance of the cross section of rail 400.
Further, the position that fixed base plate 204 is connected with rear rail head retaining plate 206 is provided with the bolt slot 207 of length direction perpendicular to the length direction of fixed base plate 204, is connected by fixed base plate 204 by the bolt be arranged in bolt slot 207 with rear rail head retaining plate 206.After front rail head retaining plate 202 is fixedly completed with rail 400, by the position of the bolt in adjusting bolt elongated hole 207, rear rail head retaining plate 206 can be moved along bolt slot 207 length direction relative to fixed base plate 204, thus centering adjustment is carried out to rear rail head retaining plate 206, and then well heater 100 is moved along the direction contrary with rear rail head retaining plate 206 travel direction, the centering completing the transverse direction of well heater 100 regulates.
Further, above-mentioned centering regulating mechanism 200 also comprises thermal baffle 201, thermal baffle 201 is arranged on the side towards well heater 100 of front rail head retaining plate 202, and thermal baffle 201 has and " n " nibs of aligning identical with " n " nibs of front rail head retaining plate 202, makes rail head can be contained in " n " nibs of thermal baffle 201.Because well heater in heat treatment process 100 produces very high temperature, so by arranging thermal baffle 201, tilting mechanism 300 and centering regulating mechanism 200 are all arranged on the side away from well heater 100 of thermal baffle 201, block most of heat, thus reduce high temperature to the impact of heat-treating machine, improve complete machine work-ing life.Preferably, a part for thermal baffle 201 tilts towards the direction of fixed base plate 204.As shown in Figure 4, consider and risen by the gas heated and a part of heat is conducted to tilting mechanism 300 and centering regulating mechanism 200 from upside, in an embodiment of the present utility model, the direction of the upper end of thermal baffle 201 towards fixed base plate 204 is tilted, block the hot gas of upside, reach better effect of heat insulation.But it will be appreciated by those skilled in the art that the part that thermal baffle 201 tilts towards fixed base plate 204 direction and shape are all not limited to embodiment illustrated in fig. 4.
Fig. 5 is the structural representation of the tilting mechanism 300 of the heat-treating machine for bainite rail thermit welding according to the utility model embodiment.With reference to Fig. 5, tilting mechanism 300 comprises U-shaped plate 305, two and connects stringer board 303, two well heater retaining plates and swing arms.U-shaped plate 305 can tip upside down on rail head, two connect stringer board 303 and are separately fixed on two vertical plates of U-shaped plate 305, two well heater retaining plates are connected stringer board 303 respectively and are connected in order to be fixed on tilting mechanism 300 by well heater 100 with two, simultaneously, on the upside of U-shaped plate 305, swing arm is set, utilize this swing arm to control tilting mechanism 300 moving along the track 205 on centering regulating mechanism 200, the movement of further control heater 100 on track 205 direction.
The railhead part of pending rail 400 can be accommodated in U-shaped plate 305, thus tilting mechanism 300 and rail 400 is fixed.
Two connect stringer board 303 along rail 400 length direction respectively by being bolted on two side direction vertical plates of U-shaped plate 305.By adopting the scheme connecting stringer board 303, tilting mechanism 300 and centering regulating mechanism 200 are widened with the distance of well heater 100, high temperature when further reduction well heater 100 heats, on the impact of tilting mechanism 300 and centering regulating mechanism 200, improves the work-ing life of complete machine.These two length connecting stringer board 303 can be selected according to concrete operating mode, in this no limit.
Two well heater retaining plates are separately fixed at one end away from U-shaped plate 305 that two connect stringer board 303, in order to be fixed on tilting mechanism 300 by well heater 100, make the dismounting of well heater 100 on tilting mechanism 300 all very convenient, constructability.
Swing arm is arranged on the top of U-shaped plate 305, this swing arm can at the driving lower swing of drive unit 600, and then drive the linear bearings 306 of tilting mechanism 300 to swing along the length direction of the track 205 on centering regulating mechanism 200, and drive the swing of well heater 100 further.Swing arm comprises rocker arm support 307, rocking arm 308 and swivel arm 309.Rocker arm support 307 is arranged on above U-shaped plate 305, to support rocking arm 308 and swivel arm 309.One end of rocking arm 308 is connected by rotation axis with rocker arm support 307, the other end is connected with swivel arm 309.Swivel arm 309 can rotate under the driving of drive unit 600, and drives rocking arm 308 to move.When pending steel rail welding line is heated, drive unit 600 drives swing arm to swing along the length direction of the track 205 on centering regulating mechanism 200, drive the swing of well heater 100, well heater 100 can be swung centered by steel rail welding line along rail length direction, and hunting range covers the part by welding near the steel rail welding line that affects, improve heats, improve thermit welding weld metal microstructure, improve joint mechanical property.
Further, above-mentioned well heater retaining plate comprises well heater backup plate 304 and rotary handle 301.Well heater backup plate 304 is arranged on the one end away from U-shaped plate 305 connecting stringer board 303, and the plane orthogonal of this well heater backup plate 304 is in the length direction connecting stringer board 303, for supporting well heater 100.Rotary handle 301 is arranged on the side towards well heater 100 of well heater backup plate 304, can be locked on well heater backup plate 304 by well heater 100 by rotating this rotary handle 301.Well heater 100 is locked on tilting mechanism 300 by rotary handle 301, ensures that well heater 100 can stably swing to carry out homogeneous heating to rail 400 weld seam along with the motion of tilting mechanism 300.Because well heater 100 is built with the water channel of water-cooled, so rotary handle 301 can not be inconvenient to dismantle because temperature raises.
Further, the rail head stay-warm case for carrying out isothermal holding to the rail head after thermal treatment is also comprised according to the heat-treating machine for bainite rail thermit welding of the utility model embodiment.Rail head stay-warm case comprises stay-warm case shell 501 and stay-warm case liner 502.The central authorities of stay-warm case shell 501 have the through hole matched with rail head appearance, for being contained in this stay-warm case shell 501 by rail head.Arrange stay-warm case liner 502 in stay-warm case shell 501, stay-warm case liner 502 effectively can isolate ambient temperature, and the rail after process 400 weld seam Slow cooling is got off.
The using method according to the heat-treating machine for bainite rail thermit welding of the utility model embodiment is described in detail referring to Fig. 1.After bainite thermit welding completes, be polished flat by rail head suitable, temperature is cooled to less than 300 DEG C, is arranged on pending rail head of rail by tilting mechanism 300, and makes the well heater backup plate 304 of tilting mechanism 300 aim at joint made by alumino-thermal weldin position.Centering regulating mechanism 200 is arranged on the upside of tilting mechanism 300, the track 205 of centering regulating mechanism 200 is combined with the linear bearings 306 of tilting mechanism 300.Two portions 110 and 120 of well heater 100 are installed to the well heater backup plate 304 of tilting mechanism 300 from rail 400 both sides respectively, the location square 302 of tilting mechanism 300 is matched with the location square hole 116 on well heater 100, and rotate rotary handle 301, with rotary handle 301, well heater 100 is locked on well heater backup plate 304.Observe well heater 100 whether consistent with the gap in rail 400 cross section, if there is left-right deviation, unclamp the bolt in the bolt slot 207 on centering regulating mechanism 200, move horizontally fixed base plate 204, well heater 100 is moved along the direction perpendicular to rail 400 length direction, till being adjusted to well heater 100 and rail cross section left and right centering, the bolt then tighted a bolt in elongated hole 207.Complete well heater 100 to regulate to the centering of cross section in rail 400 short transverse of rail: observe the distance between well heater about 100 fire hole and corresponding rail 400 surface, if apart from inconsistent, unclamp the rear standing bolt 209 on centering regulating mechanism 200, rotary vertically is to adjusting bolt 208, regulate fixed base plate 204 in the position of rail 400 short transverse, make well heater 100 that position occur in opposite direction to change until the fire hole up and down of well heater 100 is equal with the distance of rail section, then tighten rear standing bolt 209.Complete well heater 100 to regulate with the centering of rail cross section on rail length direction: open drive unit 600, tilting mechanism 300 is driven to swing and observe the swing situation of well heater 100 on rail length direction, if oscillation centre and the steel rail welding line of well heater 100 are inconsistent, explanation needs to carry out centering adjustment, now, unclamp front standing bolt 203 and rear standing bolt 209, mobile heat-treating machine, well heater 100 is swung centered by steel rail welding line, then tightens front standing bolt 203 and rear standing bolt 209.Pass into heated air to inlet mouth 112 and start heating, and pass into recirculated water to cool well heater 100 to water-in 111.After heat treated completes, rail head stay-warm case is used to be incubated the rail head after thermal treatment, until be cooled to normal temperature.
Although be illustrated exemplary embodiments of the present utility model, but obviously it will be appreciated by those skilled in the art that, can change when not deviating from spirit of the present utility model and principle, its scope limits in claims and its equivalent.
Claims (12)
1. for a heat-treating machine for bainite rail joint made by alumino-thermal weldin, it is characterized in that, described heat-treating machine comprises:
Well heater, described well heater comprises:
Body;
Center through hole, described center through hole is arranged on described body center, and described center through hole has the shape that can match with the cross section of pending rail;
Air flue, described air flue is connected with indirect heating gas source by the inlet mouth being arranged on the top of described body, and the wide face of described air flue along described center through hole in described body is arranged, described air flue is provided with multiple pore to be connected with described center through hole by described multiple pore towards the side of described center through hole; With
Water channel, described water channel is connected with external water source by the water-in at the top being arranged on described body, and discharge the recirculated water in described water channel by the water outlet at the top being arranged on described body, described water channel is arranged around described air flue to make described well heater remain on normal temperature state in described body.
2. heat-treating machine according to claim 1, is characterized in that, described well heater is divided into two portions along the short transverse of described rail cross section, and described well heater can be combined with rail in the mode of opposite opened.
3. heat-treating machine according to claim 2, is characterized in that, the every one end in the two ends at the top of described body is all provided with described inlet mouth, described water-in and described water outlet.
4. heat-treating machine according to claim 1, is characterized in that, described heated air is propane.
5. heat-treating machine according to claim 1, it is characterized in that, the described water channel border also comprised along described center through hole is arranged on the square tube on described body surface, the two ends of described square tube are connected with the water channel being arranged on described body interior, and the side of described square tube and described air flue adjacent.
6. heat-treating machine according to claim 1, is characterized in that, described heat-treating machine also comprises tilting mechanism, centering regulating mechanism and drive unit, and described centering regulating mechanism and described tilting mechanism are arranged on the same side of described well heater,
Wherein:
Described tilting mechanism is connected with the mode that the location square hole being arranged on described well heater side matches by the location square be arranged on described tilting mechanism with described well heater, and described tilting mechanism is provided with linear bearings, described tilting mechanism is used for fixing described well heater and drives described well heater to swing in heat treatment process;
Described centering regulating mechanism comprises front rail head retaining plate and rear rail head retaining plate, and the central authorities of described front rail head retaining plate and described rear rail head retaining plate are respectively arranged with " n " nibs matched with described rail head cross section, be connected with fixed base plate between described front rail head retaining plate with described rear rail head retaining plate, and described fixed base plate is provided with track, described linear bearings can be slided on the track, and described centering regulating mechanism is for being fixed on described rail by described heat-treating machine; And
Described drive unit is connected with described tilting mechanism.
7. heat-treating machine according to claim 6, it is characterized in that, a side towards rail of " n " nibs of described front rail head retaining plate and " n " nibs of described rear rail head retaining plate is respectively arranged with front standing bolt and rear standing bolt, and the side away from described well heater of described rear rail head retaining plate is provided with vertical adjustment bolt.
8. heat-treating machine according to claim 6, it is characterized in that, the position that described fixed base plate is connected with described rear rail head retaining plate is provided with the bolt slot of length direction perpendicular to the length direction of described fixed base plate, is connected by described fixed base plate by the bolt be arranged in described bolt slot with described rear rail head retaining plate.
9. heat-treating machine according to claim 6, it is characterized in that, described centering regulating mechanism also comprises thermal baffle, described thermal baffle is arranged on the side towards described well heater of described front rail head retaining plate, and described thermal baffle has and " n " nibs of aligning identical with described " n " nibs; Preferably, a part for described thermal baffle tilts to described fixed base plate direction.
10. heat-treating machine according to claim 6, is characterized in that, described tilting mechanism also comprises:
U-shaped plate, rail head can be accommodated in described U-shaped plate;
Two connect stringer board, and described two connect stringer board along rail length direction respectively by being bolted on two side direction vertical plates of described U-shaped plate;
Two well heater retaining plates, described two well heater retaining plates are separately fixed at one end away from described U-shaped plate of described two connection stringer boards, to be fixed on described tilting mechanism by described well heater; With
Swing arm, described swing arm is arranged on the top of described U-shaped plate and is connected with described drive unit, and swing along described track length direction to control described tilting mechanism, described swing arm comprises:
Rocker arm support, described rocker arm support is arranged on described U-shaped plate;
Rocking arm, one end of described rocking arm is connected by rotating shaft with described rocker arm support; With
Swivel arm, described swivel arm is connected by the other end of rotating shaft with described rocking arm.
11. heat-treating machines according to claim 10, is characterized in that, described well heater retaining plate comprises:
Well heater backup plate, described well heater backup plate is arranged on one end away from described U-shaped plate of described connection stringer board, and the plane orthogonal of described well heater backup plate is in the length direction of described connection stringer board; With
Rotary handle, described rotary handle is arranged on the side towards described well heater on described well heater backup plate, to lock the described well heater be positioned on described tilting mechanism.
12. heat-treating machines according to claim 1, is characterized in that, described heat-treating machine also comprises the rail head stay-warm case for carrying out isothermal holding to the rail head after thermal treatment, and described rail head stay-warm case comprises:
Stay-warm case shell, the central authorities of described stay-warm case shell have the through hole matched with rail head appearance; With
Stay-warm case liner, described stay-warm case liner is attached to the inside of described stay-warm case shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520537667.5U CN204803371U (en) | 2015-07-23 | 2015-07-23 | A thermal treatment machine for bainite steel rail alumino thermic welding joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520537667.5U CN204803371U (en) | 2015-07-23 | 2015-07-23 | A thermal treatment machine for bainite steel rail alumino thermic welding joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643803A (en) * | 2019-11-05 | 2020-01-03 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN110656230A (en) * | 2019-11-05 | 2020-01-07 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN112662861A (en) * | 2020-12-17 | 2021-04-16 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Heat treatment process after thermite welding of bainite steel rail |
| CN112695189A (en) * | 2020-12-22 | 2021-04-23 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Heat treatment process for bainite steel rail welded joint |
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2015
- 2015-07-23 CN CN201520537667.5U patent/CN204803371U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643803A (en) * | 2019-11-05 | 2020-01-03 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN110656230A (en) * | 2019-11-05 | 2020-01-07 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN110643803B (en) * | 2019-11-05 | 2023-10-27 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod piece heating method |
| CN110656230B (en) * | 2019-11-05 | 2024-01-19 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod piece heating method |
| CN112662861A (en) * | 2020-12-17 | 2021-04-16 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Heat treatment process after thermite welding of bainite steel rail |
| CN112695189A (en) * | 2020-12-22 | 2021-04-23 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Heat treatment process for bainite steel rail welded joint |
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