CN2654660Y - Hydraulic steel rail stretching machine - Google Patents
Hydraulic steel rail stretching machine Download PDFInfo
- Publication number
- CN2654660Y CN2654660Y CN 03249170 CN03249170U CN2654660Y CN 2654660 Y CN2654660 Y CN 2654660Y CN 03249170 CN03249170 CN 03249170 CN 03249170 U CN03249170 U CN 03249170U CN 2654660 Y CN2654660 Y CN 2654660Y
- Authority
- CN
- China
- Prior art keywords
- pull bar
- rail
- machine
- link
- stretching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title description 2
- 239000010959 steel Substances 0.000 title description 2
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 11
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The utility model relates to a hydraulic rail drawing machine, which is provided with at least two hydraulic cylinders. The two hydraulic cylinders are both fixed on a connecting bracket; a piston rod is connected with a movable clamping head, and two drawing rods are arranged on both sides of the connecting bracket respectively. A first side of the drawing rod is connected with the two sides of the connecting bracket, while a second side of the drawing rod is connected with the two sides of a fixed clamping head. The two sides of the movable clamping head are connected with two drawing rods slidingly. The utility model overcomes the defect of the widely-known technique and enhances the quality of the drawing rail. The rail-connecting and rail hot aluminous welding can be done instantly after the rail-drawing so that the working efficiency is increased. Besides, because the drawing can be done in a plurality of times, the length of the cylinder can be shortened when the requirement of maximum drawing distance is met. Thus, the producing and repairing cost of the equipment is reduced and the weight of the equipment is reduced so that the assembly and transportation is very convenient.
Description
Technical field
The utility model relates to a kind of railway track road maintainance machinery, and especially a kind of gapless track thermal stresses that is used for is diffused with hydraulic pressure rail stretching-machine, is specially adapted to the disconnected rail repairing operation of gapless track.
Background technology
Gapless track destressing and disconnected rail repairing operation are very important work of railway department.At present, the gapless track destressing is that a kind of pressure of taking when being lower than fastening-down temperature of rail is diffused, and needs special-purpose stretching-machine; Disconnected rail repairing operation when the needs REPAIR WELDING, also needs stretching-machine to draw rail, keeps the regulation rail gap, puts the exothermic welding facility, the multiple rail of weldering.
Present known stretching-machine, as the Chinese patent of the applicant in first to file, application number is: 94220940.0, name is called: the hydraulic pressure rail tensor is to be configured to by two card rails, the piston rod by hydraulic jack connects this two card rail framves, forms stretcher.Be separately fixed at the end of homonymy two one steel rails of the operation that need stretch during operation, the rod chamber that hydraulic oil enters hydraulic jack drives fixedly connected with it card rail frame generation displacement by piston rod, thereby rail is stretched.All there is following defective in this known configurations:
1, rail gap is difficult to maintain, the hydraulic jack of above-mentioned rail tensor is fixed therein on the card rail frame, two card rail framves produce relative motion under the effect of hydraulic oil, rail is stretched, when the stretching operation reaches the regulation rail gap, make hydraulic oil pump enter packing state to reach the purpose that keeps rail gap, when hydraulic system has leakage, rail gap then is difficult to guarantee, will influence welding quality simultaneously, and this stretcher is in running order always.
2, long, the Heavy Weight of the length of hydraulic jack.In the known technology, be, need not very big amount of tension in the ordinary course of things, thereby cause the waste of oil cylinder stroke, and increased length, the weight of oil cylinder, make oil cylinder comparatively heavy with the oil cylinder of maximum tension amount design.
3, this known stretcher is when the stretching operation, the rod chamber of hydraulic jack applies the operation end of pulling force for it, because the piston area of rod chamber is less than the piston area of rodless cavity, therefore to reach same pulling force, the cylinder diameter of its hydraulic jack of stretcher of known technology is big, has correspondingly increased the overall weight of equipment.
4, two of above-mentioned known stretcher card rail frame spacings are by the stroke decision of hydraulic jack, and two card rail frame spacings are less, can't carry out immediately after drawing rail rail and exothermic welding rail, must lay down welding again behind the stretcher earlier, therefore can not satisfy the needs of disconnected rail quick service.
Because the defective that above-mentioned known technology exists, the design people through the permanent research and experiment of making great efforts, develops out hydraulic pressure rail stretching-machine of the present utility model to be engaged in the practical experience of this area for many years finally.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of two pull bars that have are provided, which is provided with the hydraulic pressure rail stretching-machine of the active chuck that oil cylinder link, fixed chuck and can move along pull bar, this stretching-machine can overcome the defective of existing stretching-machine, satisfies behind the disconnected rail that weldering fast is multiplexing draws rail operation needs and draw that rail power is big, in light weight, easy accessibility.
For this reason, hydraulic pressure rail stretching-machine of the present utility model has at least two hydraulic jacks, this two hydraulic jack all is fixedly set on the link, its piston rod is connected with an active chuck, the two side ends of described link is respectively equipped with a pull bar, first end of this pull bar is connected with the two side ends of link, and second end of this pull bar is connected with the two ends of a fixed chuck respectively, and described active chuck two ends are connected slidably with two pull bars respectively.
Aforesaid hydraulic pressure rail stretching-machine, described two pull bars longitudinally are provided with corresponding chute, and the both ends of above-mentioned active chuck are placed through in the chute of pull bar.
Aforesaid hydraulic pressure rail stretching-machine, described pull bar comprises first pull bar and second pull bar, and first pull bar is a U type pull bar, and its U type notch constitutes chute, the notch of second pull bar and first pull bar is complementary, and the one end is placed through in the U type notch of first pull bar and with it fixedlys connected.
Aforesaid hydraulic pressure rail stretching-machine, described pull bar is square pull bar.
Aforesaid hydraulic pressure rail stretching-machine, described pull bar is provided with a plurality of through holes that run through chute.
Aforesaid hydraulic pressure rail stretching-machine, the two side ends of described link is placed through in the chute of pull bar, and two wear fixedly connected described link of through hole and the pull bar that pin runs through link two side ends and pull bar respectively.
Aforesaid hydraulic pressure rail stretching-machine, the two side ends of described active chuck is placed through in the chute of described pull bar slidably, and between link and fixed chuck.
Characteristics of the present utility model and advantage are:
1, rail stretching-machine of the present utility model, form by link, active chuck, fixed chuck and pull bar, be assembled structure, fixedly connected during use by wearing pin, and pull bar adopts two sections drawing and pulling type pull bars, during not operation second pull bar can in contract and be contained in the chute of first pull bar, thereby reduced the volume of stretching-machine off working state, be convenient to stretching-machine transportation, deposit; Strengthened the spacing between fixed chuck and the active chuck simultaneously, can after drawing rail, carry out immediately rail and exothermic welding rail have been improved operating efficiency.
2, the pulling force of the utility model stretching-machine is big, is the operation end that applies pulling force owing to adopt the rodless cavity of hydraulic jack, and therefore the rod chamber than known technology is the structure that applies pulling force operation end, under the identical condition of oil cylinder volume, has improved pulling force greatly; Otherwise, satisfying under the situation that pulling force equates, the oil cylinder of the more known stretching-machine of cylinder diameter is little, thereby dwindled oil cylinder volume, alleviated weight of equipment.
3, because pull bar of the present utility model is a two-part, which is provided with a plurality of perforation, therefore can repeatedly stretch, after promptly finishing stretching for the first time, be fixed in the pin-and-hole by wearing pin, after the hydraulic jack off-load, the pin of wearing that the link two ends are connected with pull bar is extracted, link is moved to the position of close active chuck together with cylinder barrel, by wearing pin pull bar is fixedlyed connected with link again, carry out stretching the second time, in like manner also can carry out for the third time, the 4th time ... stretch, thereby even add operation by oil cylinder stroke, satisfy the needs of maximum tension amount, shortened the length of oil cylinder, reduced device fabrication, maintenance cost, alleviate weight of equipment, be convenient to assembling, transportation.
4, stretching-machine of the present utility model, when rail is stretched when putting in place, the spacing of active chuck and fixed chuck can lock, whole stretching-machine is rigid connection, hydraulic system need not pressurize, and the rail gap length of regulation is maintained exactly, improved and drawn the rail quality, for follow-up weldering rail has been carried for guaranteeing.
Description of drawings
Fig. 1 looks schematic diagram for the utility model hydraulic pressure rail stretching-machine overall structure master;
Fig. 2 is the utility model hydraulic pressure rail stretching-machine overall structure schematic top plan view;
Fig. 3 A, B are that the utility model hydraulic pressure rail stretching-machine link master looks and schematic top plan view;
Fig. 4 A, B are that the utility model hydraulic pressure rail stretching-machine oil cylinder chuck master looks and schematic top plan view;
Fig. 5 A, B are that the utility model hydraulic pressure rail stretching-machine fixed chuck master looks and schematic top plan view;
Fig. 6 A, B are that the utility model hydraulic pressure rail stretching-machine pull bar master looks and schematic top plan view;
Fig. 7 is be stretched operation schematic diagram after putting in place of the utility model hydraulic pressure rail stretching-machine rail;
Fig. 8 even adds schematic diagram for the stroke of the utility model hydraulic pressure rail stretching-machine.
The specific embodiment
Below in conjunction with drawings and the specific embodiments the concrete structure that the utility model proposes is further described.
As shown in Figure 1, 2, a kind of hydraulic pressure rail stretching-machine that the utility model proposes, have at least two hydraulic jacks 1, this two hydraulic jack all is fixedly set on the link 4, its piston rod 11 is connected with an active chuck 5, and the two side ends of described link 4 is respectively equipped with a pull bar 7, and first end of this pull bar 7 is connected with the two side ends of link 4, second end of this pull bar is connected with the two ends of a fixed chuck 12 respectively, and described active chuck 5 two ends are connected slidably with two pull bars 7 respectively.Above-mentioned hydraulic jack 1 can adopt two-way cylinder, is driven by electric hydraulic station, drives chuck rail is applied pulling force.
Described two pull bars 7 longitudinally are provided with corresponding chute, and the both ends of above-mentioned active chuck 5 are placed through in the chute of pull bar.Wherein, this pull bar 7 can be a whole rod member (not shown), and an end is provided with chute, places for active chuck 5, and carries out laterally moving along this chute.
In the present embodiment, described pull bar 7 is made up of two parts, cooperation is referring to Fig. 6 A, B, described pull bar comprises first pull bar 72 and second pull bar 73, first pull bar 72 is a U type pull bar, the notch that its U type notch constitutes chute 71, the second pull bars 73 and first pull bar is complementary, and it is interior and fixedly connected with it that the one end is placed through the U type notch of first pull bar.Described pull bar is preferably square pull bar, also can be circle or other geometry certainly.Described pull bar 7 is provided with a plurality of through hole 74,741,742... that run through chute 71.
The two side ends of described link 4 is placed through in the chute 71 of pull bar, and two wear fixedly connected described link of through hole and the pull bar that pin 3 runs through link 4 two side ends and pull bar 7 respectively.
The two side ends of described active chuck 5 is placed through in the chute 71 of described pull bar slidably, and between link 4 and fixed chuck 12.
Described active chuck 5 is the shape of a saddle with fixed chuck 12, in the middle of it wedge guide groove 51,121 is arranged, and in the guide groove a pair of wedge 6 can be housed respectively, shown in Fig. 2, Fig. 4 A, B and Fig. 5 A, B.Certainly this active chuck and fixed chuck also can adopt known structure.
The hydraulic pressure rail stretching-machine that the utility model proposes is an assembled structure, is fixed together with wearing pin between them.And owing to adopt the two-part pull bar, thereby reduced the volume of stretching-machine off working state, can be convenient to stretching-machine transportation, deposit; Strengthened the spacing between fixed chuck 12 and the active chuck 5 simultaneously, can after drawing rail, carry out immediately rail and exothermic welding rail have been improved operating efficiency.
When the rail operation is drawn in the repairing of needs destressing or disconnected rail, referring to Fig. 1 to 6A, B, be equipped with two hydraulic jacks 1 on the described link 4, with locknut 2 lockings, hydraulic cylinder piston rod 11 is with after active chuck 5 is connected, with this link 4 together with hydraulic jack 1, active chuck 5 straddles two ends that need the rail 8 of butt joint of homonymy, fixed chuck 12 straddles the other end of these two butt joint rail 8, then two of two two ends band pin-and-holes are saved drawing and pulling type pull bars 72,73 extract out, be connected and fixed and constitute a whole pull bar 7 with wearing pin 9, parallelization is in rail 8 both sides, its first end is worn pin 3 with link 4 usefulness respectively and is fixedlyed connected, and second end is worn pin 13 with fixed chuck 12 usefulness respectively and fixedlyed connected.As required draw rail length, calculate the length that hydraulic cylinder piston rod stretches out in advance, then wedge 6 is fastened in respectively between the wedge guide groove 51,121 and rail 8 of active chuck 5 and fixed chuck 12, clamp rail head of rail.Start electronic high pressure pumping plant, hydraulic oil enters the rodless cavity of hydraulic jack 1, at this moment, hydraulic cylinder piston rod 11 is overhanging, drive active chuck 5 moves along the guide groove 71 of pull bar 7, and also move by the fixedly connected rail 8 of wedge 6 and be stretched with active chuck 5, promptly two chucks 5,12 drive the relative motion of two butt joint rail, and when reaching the regulation rail gap, active chuck 5 is just crossed the through hole 741 on the pull bar, wear pin 14 at through hole 741 places fixing, shown in Fig. 2,7, at this moment, the hydraulic jack off-load, pumping plant is not worked, and has promptly finished and has drawn the rail operation process.Can carry out at last rail and the operation of exothermic welding rail.
When required amount of tension bigger, when the stroke of hydraulic jack 1 does not satisfy, can carry out twice stretching, after promptly finishing stretching for the first time, be fixed in the through hole 741 by wearing pin 14, after hydraulic jack 1 off-load, the pin 3 of wearing that link 4 two ends are connected with pull bar 7 is extracted, hydraulic oil enters the rod chamber of hydraulic jack 1, because oil cylinder chuck 5 maintains static piston rod and cylinder barrel relative motion, link 4 moves to the position of pull bar through hole 742 together with cylinder barrel, with wearing pin 15 pull bar 7 is fixedlyed connected with link 4, carry out stretching the second time, referring to Fig. 8.Certainly, also can carry out repeatedly the position to rail as required stretches.
During dismounting, the link 4 and the pin of wearing of pull bar 7 are extracted, and hydraulic oil enters the rod chamber of hydraulic jack 1 then, between link 4 and active chuck 5, put top iron or push rod, wedge on the active chuck 5 is ejected, and the wedge on the chuck 12 of an end of not getting loose that strikes with a hammer makes the wedge rail that gets loose, extract that all wear pin on the pull bar, take off pull bar 7, chuck 12, link 4 together with hydraulic jack 1 and active chuck 5, so far, finish dismounting.
The above person only; only be specific embodiment of the utility model, when can not with the scope implemented of qualification the utility model, so the displacement of its equivalent assemblies; or, all should still belong to the category that this patent is contained according to equivalent variations and modification that the utility model scope of patent protection is done.
Claims (7)
1, a kind of hydraulic pressure rail stretching-machine, it is characterized in that: described rail stretching-machine has at least two hydraulic jacks, this two hydraulic jack all is fixedly set on the link, its piston rod is connected with an active chuck, the two side ends of described link is respectively equipped with a pull bar, first end of this pull bar is connected with the two side ends of link, and second end of this pull bar is connected with the two ends of a fixed chuck respectively, and described active chuck two ends are connected slidably with two pull bars respectively.
2, hydraulic pressure rail stretching-machine as claimed in claim 1, it is characterized in that: described two pull bars longitudinally are provided with corresponding chute, and the both ends of above-mentioned active chuck are placed through in the chute of pull bar.
3, hydraulic pressure rail stretching-machine as claimed in claim 2, it is characterized in that: described pull bar comprises first pull bar and second pull bar, first pull bar is a U type pull bar, its U type notch constitutes chute, the notch of second pull bar and first pull bar is complementary, and the one end is placed through in the U type notch of first pull bar and with it fixedlys connected.
4, as claim 1 or 2 or 3 described hydraulic pressure rail stretching-machines, it is characterized in that: described pull bar is square pull bar.
5, as each described hydraulic pressure rail stretching-machine of claim 1 to 3, it is characterized in that: described pull bar is provided with a plurality of through holes that run through chute.
6, hydraulic pressure rail stretching-machine as claimed in claim 5, it is characterized in that: the two side ends of described link is placed through in the chute of pull bar, and two wear fixedly connected described link of through hole and the pull bar that pin runs through link two side ends and pull bar respectively.
7, hydraulic pressure rail stretching-machine as claimed in claim 5, it is characterized in that: the two side ends of described active chuck is placed through in the chute of described pull bar slidably, and between link and fixed chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249170 CN2654660Y (en) | 2003-09-26 | 2003-09-26 | Hydraulic steel rail stretching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249170 CN2654660Y (en) | 2003-09-26 | 2003-09-26 | Hydraulic steel rail stretching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2654660Y true CN2654660Y (en) | 2004-11-10 |
Family
ID=34327538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03249170 Expired - Fee Related CN2654660Y (en) | 2003-09-26 | 2003-09-26 | Hydraulic steel rail stretching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2654660Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007065360A1 (en) * | 2005-12-06 | 2007-06-14 | Suzhou Yuehai Stretching Machinery Co., Ltd. | Numerically controlled hydraulic double-acting stretcher |
| CN105606458A (en) * | 2016-03-01 | 2016-05-25 | 青岛迪玛尔海洋工程有限公司 | Two-time pressurization testing machine and method |
| CN110904749A (en) * | 2019-12-09 | 2020-03-24 | 郑州铁路职业技术学院 | A railway hydraulic rail tensioner |
-
2003
- 2003-09-26 CN CN 03249170 patent/CN2654660Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007065360A1 (en) * | 2005-12-06 | 2007-06-14 | Suzhou Yuehai Stretching Machinery Co., Ltd. | Numerically controlled hydraulic double-acting stretcher |
| DE212006000075U1 (en) | 2005-12-06 | 2008-07-31 | Suzhou Yuehai Stretching Machinery Co., Ltd., Suzhou | Numerically controlled, hydraulically double-acting forming device |
| CN105606458A (en) * | 2016-03-01 | 2016-05-25 | 青岛迪玛尔海洋工程有限公司 | Two-time pressurization testing machine and method |
| CN105606458B (en) * | 2016-03-01 | 2023-07-21 | 青岛迪玛尔海洋工程有限公司 | Secondary pressurization testing machine and testing method |
| CN110904749A (en) * | 2019-12-09 | 2020-03-24 | 郑州铁路职业技术学院 | A railway hydraulic rail tensioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102828343B (en) | Weft paving device of warp knitting machine | |
| CN202655396U (en) | Hydraulic stretching straightening machine | |
| CN2654660Y (en) | Hydraulic steel rail stretching machine | |
| CN214350699U (en) | Hydraulic type traction pull rod dismounting device | |
| CN203508822U (en) | Water pressure expanding machine for compound steel pipe | |
| CN211251409U (en) | Large-scale high-speed servo stamping hydraulic machine | |
| CN215482339U (en) | Hydraulic clamping device for adjusting tension degree of steel strand | |
| CN202438574U (en) | Pulling tower capable of outputting two strokes | |
| CN211614785U (en) | Self-positioning type feeding and conveying device of press-fitting machine | |
| CN203282405U (en) | Inner embrace type assembly machine for plate heat exchanger | |
| CN215970232U (en) | Hydraulic shaping machine for bundled sectional materials | |
| CN214401232U (en) | Steel rail stretching machine | |
| CN219986770U (en) | Hydraulic system for replacing C-shaped frame of roller | |
| CN212243958U (en) | Movable automatic bundling machine device for steel bar trusses | |
| CN203566991U (en) | Rolling tool positioning and pressing device | |
| CN222739978U (en) | A powerful steel coil tower repair machine | |
| CN209453481U (en) | A kind of automobile axle housing spindle nose dismounting device | |
| CN108907665B (en) | Cylinder drawing machine for upright column | |
| CN220166549U (en) | Novel portable hydraulic rail puller | |
| CN209238715U (en) | Pressure ram moves left and right short stroke aluminum section extruder | |
| CN212018904U (en) | Steel cord fabric separating and recycling machine | |
| CN113512950B (en) | Hydraulic clamping device for adjusting tension of steel strand and using method thereof | |
| CN221760480U (en) | Whole beam passing trolley for bridge | |
| CN222059254U (en) | Platform for welding reinforcing ribs on aluminum templates | |
| CN223043867U (en) | A table traction mechanism for laser cutting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |