CN201190254Y - Double variable span multipurpose track laying machine and - Google Patents
Double variable span multipurpose track laying machine and Download PDFInfo
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- CN201190254Y CN201190254Y CNU2008200078345U CN200820007834U CN201190254Y CN 201190254 Y CN201190254 Y CN 201190254Y CN U2008200078345 U CNU2008200078345 U CN U2008200078345U CN 200820007834 U CN200820007834 U CN 200820007834U CN 201190254 Y CN201190254 Y CN 201190254Y
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Abstract
The utility model discloses a multipurpose double variable-span track laying machine and variable-span mechanisms thereof. The multipurpose double variable-span track laying machine comprises a steel truss and a plurality of travelling wheel groups arranged below the steel truss, wherein, a variable-span mechanism is arranged between each travelling wheel group and the steel truss, each variable-span mechanism comprises a telescopic case and a telescopic mast sleeved in the telescopic case, the telescopic case is fixedly connected with the steel truss, and the telescopic mast is transversely and horizontally arranged relatively to the telescopic mast, and is fixedly connected with one travelling wheel group. The travelling wheel and the telescopic case are respectively and fixedly connected with a variable-span lead screw and a nut, the variable-span lead screws are screwed to the nuts, and the variable-span lead screws are driven to rotate by a variable-span motor.
Description
Technical field
The utility model relates to a kind of lifting, displacement of railway ballastless track structure object, the construction equipment of laying operation, specifically, relates to the laydown machine of a kind of precast concrete track plate, sleeper, the section of track, point components.
Background technology
The China's railway system construction has entered a great-leap-forward development stage, adopted the non-fragment orbit technology in Line for Passenger Transportation and the high speed railway construction in a large number, the construction equipment that is just needing a large amount of liftings, displacement, laid rail guidance tape, sleeper, the section of track, point components operation, adopt the lifting of wheel-track type gantry crane and track plate spreading machine at present, but all come with some shortcomings.
Following shortcoming is arranged when adopting the wheel-track type gantry crane to mat formation:
1. track need be laid in the base both sides, and back work is many, and labour intensity is big;
2. can't adapt to installation, bad adaptability at bridge, tunnel, the different base width of roadbed;
Following shortcoming is arranged when adopting existing track plate spreading machine to lay:
1. monolateral top becomes strides and the drivers' cab fixed placement, and construction adaptability is poor in the tunnel;
2. the steering angle of traveling wheels is less, the need transition sidewalk of reaching the standard grade, roll off the production line;
3. the traversing positioning accuracy of hoist engine wire rope is not high;
4. the hanging beam dolly freely hangs to hydraulic tube and control line on the suspender, damage easily, and the influence construction;
5. suspender function singleness, usage ratio of equipment is not high;
6. dynamical system does not have access path, maintenance difficult.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes known technology, provides a kind of two change that is applicable to railway solid concrete roabed precast concrete track plate, sleeper, the section of track, point components laying work to stride the multipurpose track laydown machine and mechanism is striden in change.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of two change strides the multipurpose track laydown machine, comprises a steel framework and several traveling wheels that are arranged on the steel frame underneath left and right sides, it is characterized in that:
Between each traveling wheels and steel framework, be provided with a change and stride mechanism, each change is striden mechanism and is comprised telescopic and slide over the interior telescopic mast of telescopic, described telescopic mast relative orbit direction is transverse horizontal and places, described telescopic is connected with the steel framework, and described telescopic mast is connected with described traveling wheels;
Be connected with actuating unit between described telescopic mast and the described telescopic, to control the flexible slippage in described telescopic of described telescopic mast.
In the preferable technical scheme, also adding has following technical characterictic:
Described actuating unit is feed screw nut's transmission mechanism, is connected with respectively on described telescopic mast and the described telescopic to become to stride screw mandrel and nut, and screw mandrel is striden in described change and described nut is spirally connected, and described change is striden screw mandrel and striden motor-driven by change and rotate.
Described actuating unit is the hydraulically extensible cylinder, and the two ends of described hydraulically extensible cylinder are affixed with telescopic mast and telescopic respectively.
The inwall of described telescopic is provided with the groove that stores lubrication oil.
Stride in each corresponding change and to be provided with a double-deck steering mechanism between mechanism and the traveling wheels, described double-deck steering mechanism comprises turning cylinder, cursor, slewing equipment, upper strata telescopic oil cylinder and lower floor's telescopic oil cylinder, described turning cylinder vertically is provided with, and with change to stride the telescopic mast of mechanism affixed, described cursor and slewing equipment all are articulated on the described turning cylinder, one end of described cursor one end and described upper strata telescopic oil cylinder articulates, the other end of described upper strata telescopic oil cylinder is articulated on the described telescopic mast, one end of the described cursor other end and described lower floor telescopic oil cylinder articulates, the other end of described lower floor telescopic oil cylinder is articulated on the described slewing equipment, and described slewing equipment is connected with the traveling wheels and drives the traveling wheels and turns to.
Two girders before and after the steel framework of described track laying machine is provided with also are provided with a trolley for the traction suspender on the every girder, described trolley is to move on girder by a transverse-moving mechanism; Described transverse-moving mechanism comprises two bearings, threaded screw rod, nut and drive units, described two bearings are arranged on the two ends of threaded screw rod, and it is affixed with girder, the two ends of described threaded screw rod are articulated in described two bearings, threaded screw rod is by traversing motor-driven, and is spirally connected with the nut that is fixed on the trolley.
Described trolley is to be connected by the lifting chain with suspender, and described lifting chain comprises a plurality of free bearings, a plurality of folded tube, a plurality of angle limiter and at least one leading truck; Described a plurality of folded tube is from beginning to end by described free bearing serial connection, be provided with the angle limiter of " U " type in the described free bearing, to guarantee the fold sequence and the direction of folding siphunculus, device has control line and the hydraulic tube piece from the trolley to the suspender in the folded tube of described lifting chain.
Also be provided with drivers' cab on described steel framework, described drivers' cab bottom also is provided with slipping mechanism and is connected with the steel framework, and " form by two by [" type chute, support wheel, driving wheel, tooth bar and locking device for described slipping mechanism; Two " [" type chute is fixed under the base plate of drivers' cab in opposite directions or the layout that supports or opposes, and support wheel, driving wheel are embedded in and " in [" type chute, can be free to slide; Tooth bar is solidly connected to that " upper wall or lower wall dispose gear on the driving wheel in [" type chute, and wheel and rack is meshed.
Also be provided with the dynamical system case on described steel framework, be provided with collapsible inspection platform in the outside of described dynamical system case, described collapsible inspection platform is made up of platform, railing, splicer and ladder; The inboard and the headstock of platform are hinged, the hinged support bar of the lower disposed of platform; Railing, ladder are all hinged with platform.
For achieving the above object, the technical solution adopted in the utility model also comprises:
Mechanism is striden in a kind of change, it is characterized in that: comprise telescopic and slide over the interior telescopic mast of telescopic, described telescopic mast horizontal positioned, and be connected with actuating unit between described telescopic mast and the described telescopic, to control the flexible slippage in described telescopic of described telescopic mast.
Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:
1, left side, right side become and stride mechanism and can laterally become simultaneously and stride, and promptly bilateral change is striden, and has not only increased greatly to become the traversing amount of striding, and adapts to the roadbed and the base that more broaden and narrow down; And the center of laydown machine upper lateral can with construction line center basically identical, in other words, the utility model when constructing tunnel, the minimum range basically identical of its top and tunnel inwall, and the gap is bigger, construction party many.
2, becoming the telescopic mast stride in the mechanism and an end of cursor turns to the hinged formation first floor in the two ends of upper strata telescopic oil cylinder respectively; The other end of cursor and slewing equipment turn to the hinged formation second layer in two ends of lower floor telescopic oil cylinder respectively; The flexible slewing equipment that all can promote of telescopic oil cylinder rotates arbitrarily, thereby realizes the all-wheel steering of traveling wheels.
3, the transverse-moving mechanism of trolley is placed on two girders of steel framework, can drive trolley and axially accurately move and the location, thereby guarantee that trolley 30 is in horizontal positioning accuracy.
4, the leading truck of described lifting chain is " U " structure, can protect its inner control line and hydraulic tube piece.
Description of drawings
Fig. 1 is two structural representation of striding the multipurpose track laydown machine that becomes described in the utility model;
Figure 1A is the local enlarged diagram of k part among Fig. 1, is to become the structural representation of striding mechanism;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the right view of Fig. 1;
Fig. 4 is the vertical view of Fig. 1.
Fig. 5 A, Fig. 5 B, Fig. 5 C are the all-wheel steering schematic diagrames of double-deck steering mechanism;
Fig. 6 is the side direction view of slipping mechanism;
Fig. 7 is that the fragmentary top of collapsible inspection platform is to view.
Description of reference numerals: 10-steel framework; The 100-door frame; The 110-column; The 120-girder; 130-left side top rail; 140-left side lower transverse beam; 150-right side top rail; 160-right side lower transverse beam; The 170-support cylinder; 20-traveling wheels; Mechanism is striden in the 200-change; The 210-telescopic; The 220-telescopic mast; Screw mandrel is striden in the 230-change; Motor is striden in the 240-change; The 250-nut; The 30-trolley; The double-deck steering mechanism of 300-; The 310-turning cylinder; The 320-cursor; The 330-slewing equipment; 340-upper strata telescopic oil cylinder; 350-lower floor telescopic oil cylinder; The 400-transverse-moving mechanism; The 410-bearing; The 420-threaded screw rod; The 430-nut; The 440-drive unit; The 50-drivers' cab; 500-lifting chain; The 510-free bearing; The 520-folded tube; The 530-angle limiter; The 540-leading truck; 60-dynamical system case; The 600-slipping mechanism; The 610-chute; The 620-support wheel; The 630-driving wheel; The 640-tooth bar; The 650-locking device; The 700-inspection platform; The 710-railing; The 720-platform; The 725-support bar; The 730-splicer; The 740-ladder; The 800-suspender; Suspension bracket under the 810-; The 820-over sling; The 825-grab jaw.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, two change described in the utility model is striden the multipurpose track laydown machine and is comprised steel framework 10, traveling wheels 20, trolley 30 and combined sling 800, described steel framework 10 is by four crossbeams 130,140,150,160 left and right pillars 110 with two door frames 100 connect the framework steel structure of one up and down, dynamical system case 60 is set above left side lower transverse beam 130, control drivers' cab 50 is set above right side lower transverse beam 160, left and right sides lower transverse beam 140,160 all have support cylinder 170, described traveling wheels 20 are positioned at the lower end of four columns 110 of steel framework 10, trolley 30 is on the girder 120 of two door frames 100, and suspender 800 links to each other with trolley 30 by wire rope.
In addition, the application comprises that also the change that is arranged between column 110 and the traveling wheels 20 strides mechanism 200, double-deck steering mechanism 300, the transverse-moving mechanism 400 of trolley 30, the collapsible inspection platform 700 outside the lifting chain 500 between trolley 30 and the suspender 800, the slipping mechanism 600 of drivers' cab 50 and the dynamical system case 60.Described combined sling 800 comprises suspension bracket 820,810 up and down, and over sling 820 disposes clamp devices such as grab jaw 825, cloth pillow device and gripping rail device.
Referring to Fig. 1, the lower end that mechanism 200 lays respectively at four columns 110 of steel framework 10 is striden in described change, and left side, right side become strides mechanism 200 and can laterally become simultaneously and stride, and promptly bilateral change is striden, not only increased greatly and become the traversing amount of striding, adapted to the roadbed and the base that more broaden and narrow down; And the center of laydown machine upper lateral can with construction line center basically identical, in other words, the utility model when constructing tunnel, the minimum range basically identical of its top and tunnel inwall, and the gap is bigger, construction party many.
Change is striden mechanism 200 and is comprised telescopic 210 and the telescopic mast 220 that slides in the telescopic 210, and the inwall of telescopic 210 is provided with the groove that stores lubrication oil, and its top and column 110 are affixed; Telescopic mast 220 horizontal directions are placed, and top arranges to become and stride screw mandrel 230 that the bottom is vertical affixed with traveling wheels 20; Change is striden screw mandrel 230 and is striden motor 240 drivings by change, becomes the nut 250 of striding on the screw mandrel 230 and is fixed on the telescopic 210.The cross section of described telescopic 210 is square-section or circular cross-section, and the cross section of telescopic mast 220 is and corresponding to cross section, the cross section of telescopic 210.
Certainly, between described telescopic mast 220 and the described telescopic 210 except adopting feed screw nut's transmission mechanism as actuating unit, also can adopt the hydraulically extensible cylinder as actuating unit, the two ends of described hydraulically extensible cylinder are affixed with telescopic mast 220 and telescopic 210 respectively, can reach the purpose of control telescopic mast 220 relative telescopic 210 flexible slippages equally.
Referring to Fig. 5 A, double-deck steering mechanism 300 lays respectively to become and strides between mechanism 200 and the traveling wheels 20, comprises turning cylinder 310, cursor 320, slewing equipment 330 and two oil cylinders 340,350.Turning cylinder 310 is affixed with the telescopic mast 220 that change is striden in the mechanism 200, cursor 320 and slewing equipment 330 all are hubbed on the turning cylinder 310, become the telescopic mast 220 stride in the mechanism 200 and an end of cursor 320 and turn to the hinged formation first floor in the two ends of upper strata telescopic oil cylinder 340 respectively; The other end of cursor 320 and slewing equipment 330 turn to the hinged formation second layer in two ends of lower floor telescopic oil cylinder 350 respectively; Described slewing equipment 330 is connected with traveling wheels 20 and drives traveling wheels 20 revolution.The flexible slewing equipment 330 that all can promote of any one telescopic oil cylinder 340,350 rotates, thereby realizes the all-wheel steering of traveling wheels 20.Double-deck steering mechanism 300 can accurately finish traveling wheels 20 and be not less than turning to of 180 degree, add the rotating of traveling wheels 20,360 degree all-wheel steerings of traveling wheels 20 have been realized, thereby laydown machine can be finished travelings at any angle such as comprising craspedodrome, diagonal, vertical, the Eight characters, not only satisfy the construction on the line, can also satisfy the use of track plate factory, sleeper factory and track switch assembly plant.
Referring to Fig. 5 A, lower floor's telescopic oil cylinder 350 of double-deck steering mechanism 300 stretches out fully, and when upper strata telescopic oil cylinder 340 was withdrawn fully, traveling wheels 20 were zero degree; Referring to Fig. 5 B, lower floor's telescopic oil cylinder 350 of double-deck steering mechanism 300 is withdrawn fully, and when upper strata telescopic oil cylinder 340 kept complete retracted mode, traveling wheels 20 turned to clockwise and are not less than 90 degree; Referring to Fig. 5 C, lower floor's telescopic oil cylinder 350 of double-deck steering mechanism 300 keeps retracted mode, when upper strata telescopic oil cylinder 340 stretches out fully, traveling wheels 20 turn to again clockwise be not less than 90 the degree, thereby double-deck steering mechanism 300 can accurately finish be not less than 180 the degree turn to.
Referring to Fig. 1, Fig. 4, the transverse-moving mechanism 400 of trolley 30 is placed on two girders 120 of steel framework 10, is made of two bearings 410, threaded screw rod 420, nut 430, drive unit 440.Two bearings 410 are at the two ends of threaded screw rod 420, and affixed with girder 120; Described threaded screw rod 420 and bearing 410 can rotate by bearing, and threaded screw rod 420 is driven by drive unit 440, become the nut 430 of striding on the screw mandrel 230 and are fixed on the trolley 30.Threaded screw rod 420 can rotating under the driving of drive unit 440, promoting nut 430 axially accurately the moving and the location of threaded screw rod 420, thereby has guaranteed that trolley 30 is in horizontal positioning accuracy.
Referring to Fig. 1, described lifting chain 500 is hinged with trolley 30 and suspender 800 respectively, mainly contains free bearing 510, folded tube 520, angle limiter 530 and leading truck 540 and forms.A plurality of folded tube 520 head and the tail connect by free bearing 510, and arrangement angles limiter 530, and the maximum angle of two adjacent folds pipes 520 of restriction is guaranteed this fold sequence and the direction of folding siphunculus less than 180 degree; Leading truck 540 is " U " structure, and individual layer is stacked only in leading truck 540 for folded tube 520.Devices have from trolley 30 to suspender 800 control line and hydraulic tube piece in the folded tube 520 of lifting chain 500, and lifting chain 500 orders are folding when suspender 800 rises, and lifting chain 500 sequential deployments have been protected control line and hydraulic tube piece when suspender 800 declines.
Referring to Fig. 3 and Fig. 6, described slipping mechanism 600 is positioned at drivers' cab 50 bottoms, and " [" type chute 610, support wheel 620, driving wheel 630, tooth bar 640 and locking device 650 etc. are formed by two.Two " [" type chute 610 is fixed under the base plate of drivers' cab 50 in opposite directions or the layout that supports or opposes, and support wheel 620, driving wheel 630 are embedded in and " in [" type chute 610, can be free to slide; Tooth bar 640 is solidly connected to " upper wall or lower wall in [" type chute 610, dispose gear on the driving wheel 630, wheel and rack 640 is meshed, when driving wheel 630 rotates, gear on the driving wheel 630 moves on tooth bar 640, moves on chute 610 directions thereby drive drivers' cab 50.When headroom need strengthen in the laydown machine middle part is horizontal, drivers' cab 50 can be toward the moving certain distance of outside slip; Vice versa.
Referring to Fig. 1, Fig. 2 and Fig. 7, on described steel framework 10, also be provided with dynamical system case 60, described collapsible inspection platform 700 is positioned at the outside of dynamical system case 60, is made up of platform 720, railing 710, splicer 730 and ladder 740.The inboard of platform 720 and headstock 750 are hinged, the hinged support bar of the lower disposed of platform 720; Railing 710, ladder 740 are all hinged with platform 720.When the laterally outer headroom of laydown machine has requirement, or need not use inspection platform 700 time, platform 720, railing 710, ladder 740 can be stacked together by splicer; Vice versa.
Rubber-tyred described in the utility model is variable strides multi-functional laydown machine and is a kind of lifting, lays the construction equipment of operation, can carry out railway concrete solid concrete roabed pre-track plate, sleeper, the section of track, the lifting of point components, laying work.
More than explanation is just illustrative for the utility model; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within the protection domain of the present utility model.
Claims (10)
1, a kind of two change strides the multipurpose track laydown machine, comprises a steel framework and several traveling wheels that are arranged on the steel frame underneath left and right sides, it is characterized in that:
Between each traveling wheels and steel framework, be provided with a change and stride mechanism, each change is striden mechanism and is comprised telescopic and slide over the interior telescopic mast of telescopic, described telescopic mast relative orbit direction is transverse horizontal and places, described telescopic is connected with the steel framework, and described telescopic mast is connected with described traveling wheels;
Be connected with actuating unit between described telescopic mast and the described telescopic, to control the flexible slippage in described telescopic of described telescopic mast.
2, the two change according to claim 1 strides the multipurpose track laydown machine, it is characterized in that: described actuating unit is feed screw nut's transmission mechanism, be connected with respectively on described telescopic mast and the described telescopic to become and stride screw mandrel and nut, screw mandrel is striden in described change and described nut is spirally connected, and described change is striden screw mandrel and striden motor-driven rotation by change.
3, the two change according to claim 1 strides the multipurpose track laydown machine, and it is characterized in that: described actuating unit is the hydraulically extensible cylinder, and the two ends of described hydraulically extensible cylinder are affixed with telescopic mast and telescopic respectively.
4, the two change according to claim 1 strides the multipurpose track laydown machine, and it is characterized in that: the inwall of described telescopic is provided with the groove that stores lubrication oil.
5, the two change according to claim 1 strides the multipurpose track laydown machine, it is characterized in that: stride in each corresponding change and be provided with a double-deck steering mechanism between mechanism and the traveling wheels, described double-deck steering mechanism comprises turning cylinder, cursor, slewing equipment, upper strata telescopic oil cylinder and lower floor's telescopic oil cylinder, described turning cylinder vertically is provided with, and with change to stride the telescopic mast of mechanism affixed, described cursor and slewing equipment all are articulated on the described turning cylinder, one end of described cursor one end and described upper strata telescopic oil cylinder articulates, the other end of described upper strata telescopic oil cylinder is articulated on the described telescopic mast, one end of the described cursor other end and described lower floor telescopic oil cylinder articulates, the other end of described lower floor telescopic oil cylinder is articulated on the described slewing equipment, and described slewing equipment is connected with the traveling wheels and drives the traveling wheels and turns to.
6, the two change according to claim 1 strides the multipurpose track laydown machine, it is characterized in that: two girders before and after the steel framework of described track laying machine is provided with, also be provided with a trolley on the every girder for the traction suspender, described trolley is to move on girder by a transverse-moving mechanism;
Described transverse-moving mechanism comprises two bearings, threaded screw rod, nut and drive units, described two bearings are arranged on the two ends of threaded screw rod, and it is affixed with girder, the two ends of described threaded screw rod are articulated in described two bearings, threaded screw rod is by traversing motor-driven, and is spirally connected with the nut that is fixed on the trolley.
7, the two change according to claim 6 strides the multipurpose track laydown machine, it is characterized in that: described trolley is to be connected by the lifting chain with suspender, and described lifting chain comprises a plurality of free bearings, a plurality of folded tube, a plurality of angle limiter and at least one leading truck; Described a plurality of folded tube is from beginning to end by described free bearing serial connection, be provided with the angle limiter of " U " type in the described free bearing, to guarantee the fold sequence and the direction of folding siphunculus, device has control line and the hydraulic tube piece from the trolley to the suspender in the folded tube of described lifting chain.
8, the two change according to claim 1 strides the multipurpose track laydown machine, it is characterized in that: on described steel framework, also be provided with drivers' cab, described drivers' cab bottom also is provided with slipping mechanism and is connected with the steel framework, and " form by two by [" type chute, support wheel, driving wheel, tooth bar and locking device for described slipping mechanism; Two " [" type chute is fixed under the base plate of drivers' cab in opposite directions or the layout that supports or opposes, and support wheel, driving wheel are embedded in and " in [" type chute, can be free to slide; Tooth bar is solidly connected to that " upper wall or lower wall dispose gear on the driving wheel in [" type chute, and wheel and rack is meshed.
9, the two change according to claim 1 strides the multipurpose track laydown machine, it is characterized in that: on described steel framework, also be provided with the dynamical system case, be provided with collapsible inspection platform in the outside of described dynamical system case, described collapsible inspection platform is made up of platform, railing, splicer and ladder; The inboard and the headstock of platform are hinged, the hinged support bar of the lower disposed of platform; Railing, ladder are all hinged with platform.
10, mechanism is striden in a kind of change, it is characterized in that: comprise telescopic and slide over the interior telescopic mast of telescopic, described telescopic mast horizontal positioned, and be connected with actuating unit between described telescopic mast and the described telescopic, to control the flexible slippage in described telescopic of described telescopic mast.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200078345U CN201190254Y (en) | 2008-03-19 | 2008-03-19 | Double variable span multipurpose track laying machine and |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200078345U CN201190254Y (en) | 2008-03-19 | 2008-03-19 | Double variable span multipurpose track laying machine and |
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| CN201190254Y true CN201190254Y (en) | 2009-02-04 |
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| CNU2008200078345U Expired - Fee Related CN201190254Y (en) | 2008-03-19 | 2008-03-19 | Double variable span multipurpose track laying machine and |
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| CN105064150A (en) * | 2015-08-13 | 2015-11-18 | 中铁十一局集团有限公司 | Lifting appliance acting on rails F |
| CN106638185A (en) * | 2016-10-10 | 2017-05-10 | 中铁上海工程局集团有限公司 | Track layer automatically changing span in advancing process and use method |
| CN106468041A (en) * | 2016-10-18 | 2017-03-01 | 中铁上海工程局集团有限公司 | A kind of relevant track-laying machine traveling process automatically becomes cross-device and becomes across method |
| CN106337329A (en) * | 2016-11-22 | 2017-01-18 | 储培兰 | Tire type subway rail laying vehicle |
| CN106667486A (en) * | 2016-12-10 | 2017-05-17 | 上海联影医疗科技有限公司 | Load moving device and method for moving coil |
| CN106667486B (en) * | 2016-12-10 | 2019-10-08 | 上海联影医疗科技有限公司 | It loads mobile device and carries out mobile method to coil |
| CN110027122A (en) * | 2019-05-13 | 2019-07-19 | 中铁科工集团轨道交通装备有限公司 | High-speed rail route concrete railway board engraving machine and engraving process |
| CN112281557A (en) * | 2020-10-19 | 2021-01-29 | 中车株洲车辆有限公司 | Track laying machine and track construction method |
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