CN101475003A - Railway bed laying emergency stone self-discharging train - Google Patents
Railway bed laying emergency stone self-discharging train Download PDFInfo
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Abstract
铁路路基铺设抢险石料自卸列车包括火车机车、平板列车组和供电及控制系统；在平板列车组上装有石料输送和装卸物流系统，该系统由料箱(3)、一个头部和尾部输送单元及多个中间输送单元组成；每个中间输送单元设有一个两层结构的整体支架(7)，下层安装两套满箱输送机(5)形成下输送线的一段，上层安装一套空箱输送机(6)形成上输送线的一段，这两段输送线是料箱在立面内的循环运行通道，各个中间输送单元中的循环运行通道连通，则料箱通过连通的下输送线将其箱内的石料在列车的正前方或正前方两侧自动卸出，然后料箱由连通的上输送线运至列车尾部，由尾部输送单元送回下输送线。本列车用于为铁路路基塌方抢险或正常路基建设供给所需石料。
The emergency stone dump train for laying the railway embankment includes a train locomotive, a flat train set, and a power supply and control system; a stone conveying and loading and unloading logistics system is installed on the flat train set, and the system consists of a material box (3), a head and a tail conveying unit and a plurality of intermediate conveying units; each intermediate conveying unit is provided with a two-layer structure integral support (7), and two sets of full container conveyors (5) are installed on the lower layer to form a section of the lower conveying line, and a set of empty containers is installed on the upper layer Conveyor (6) forms a section of the upper conveying line. These two sections of conveying line are the circulation passages of the feed boxes in the facade. The circulation passages in each intermediate conveying unit are connected, and the feed boxes will be transported through the connected lower conveying line The stones in the box are automatically unloaded at the front of the train or on both sides of the front, and then the material box is transported to the rear of the train by the connected upper conveying line, and sent back to the lower conveying line by the tail conveying unit. This train is used to supply the required stones for emergency rescue of railway embankment collapse or normal embankment construction.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of railway bed laying emergency stone self-discharging train.
Background technology
Railway transportation is the artery of national economy.The improper transportation of railway is interrupted will having a strong impact on railway transportation with obstruction, the operation that influence is economic.China has the railway of very long distance to be among lofty mountains and steep hills, owing to be subjected to flood, disasteies such as mud-rock flow, the influence of factors such as the roadbed situation is bad, a lot of roadbed landslides and the disconnected road of railway accident all can take place every year inevitably, had a strong impact on the normal operation of railway, caused great economic loss and social influence for country and place, particularly be in Fujian, the railway on ground such as Guizhou, owing to be located in the mountain area, and mostly be single line, in case run into disconnected road of railway and roadbed landslide accident, railway transportation is substantially just in paralyzed state, and economic loss that causes like this and social influence will be unable to estimate.Disaster can't be avoided, and has only the time that shortens railway recovery as much as possible, guarantees that disrupted circuit is unobstructed as early as possible, and the economic loss and the social influence that it could be brought drop to minimum level.
To in the speedily carrying out rescue work of roadbed landslide and the disconnected road of railway accident, often need a large amount of building stones in order to fill up the roadbed of landslide, normally with the high side train building stones are transported to and close on the landslide point, then by manually building stones being discharged to the railway both sides from train, the building stones that will pile up along the line are transported to landslide place and fill up again, at a lot of remote places, mountain area, big machinery can't participate in work at all, and the building stones carrying can only be with artificial master, and therefore the labour intensity of speedily carrying out rescue work is big, efficient is low, poor stability.
Also unspecial both at home and abroad at present the equipment of speedily carrying out rescue work at roadbed landslide and the disconnected road of railway accident.In order to shorten the time of repairing railway as early as possible, guarantee that disrupted circuit is unobstructed as early as possible, reduce economic loss as far as possible, it is very to be necessary that the professional railway recovery equipment of developing a kind of automation solves this class problem.
China drops into the construction that a large amount of funds is used for railway at present, and the laying of railroad bed will need a large amount of building stones, adopt this equipment to be used among the normal railway construction, can improve the efficient of railway construction undoubtedly, saves construction cost.
Summary of the invention
Technical matters to be solved by this invention is: a kind of railway bed laying emergency stone self-discharging train is provided, be railroad bed landslide to be speedily carried out rescue work or normal roadbed is built required building stones and is loaded on the hopper of this train in the stone pit, be transported to from the stone pit by this train again and close on landslide ground or lay ground, and a special-purpose train that can automatically building stones be unloaded to the landslide point or lay.
The present invention solves its technical matters and adopts following technical scheme:
Railway bed laying emergency stone self-discharging train provided by the invention, its structure is: comprise engine, dull and stereotyped train groups and power supply and control system.Building stones are housed on dull and stereotyped train groups carry and load and unload logistics system, the processing unit that described system carries and loads and unloads as containerization with hopper, this system is made up of a plurality of hoppers, head supply unit, afterbody supply unit and a plurality of middle transport unit between these two unit, and two middle transport unit headtotails are contained on the flat truck; Each middle transport unit is provided with an integral support with double-layer structure, lower floor installs two cover trunkful conveyers and forms a section of travel line under the described system, the upper strata is installed a cover empty van conveyer and is formed a section of travel line in the described system, and these two sections travel lines are hopper circular flow passages in facade; The hopper of the fully loaded building stones in each middle transport unit is migrated to the head supply unit by the following travel line that is communicated with, head unloader by this head supply unit draws off dead ahead or the dead ahead both sides of the building stones in the hopper at the train head automatically, unloaded hopper after discharging is intact is migrated to last vehicle of train by the last travel line that is communicated with, and sends down travel line back to by the afterbody supply unit.
Railway bed laying emergency stone self-discharging train provided by the invention, its purposes is: railroad bed landslide is speedily carried out rescue work or normal roadbed is built required building stones and is loaded on the hopper of this train by the stone pit, be transported to from the stone pit by this train again and close on landslide ground or lay ground, and can automatically building stones be unloaded to the landslide point or lay point.
Railway bed laying emergency stone self-discharging train provided by the invention mainly contains following remarkable result:
The building stones that utilize railway freight dressing plate car and engine to transport to be mounted with emergency stone carry and the loading and unloading logistics system to landslide ground or lay ground, carry and load and unload the material self-loopa of logistics system and unload function certainly by building stones, can automatically all building stones be offloaded to the landslide point or lay point, reduction manpower labour intensity that will be bigger, raise the efficiency and safety, shortening are speedily carried out rescue work the time, the normal operation of train can be recovered as early as possible, can also improve the quick reaction capability of railway, will have remarkable social benefit and economic benefit emergent accident.In addition, train provided by the invention also can be used for supplying with required building stones for the laying of roadbed in the normal construction of railway, improves railway construction efficient.
Description of drawings
Fig. 1 is the composition scheme drawing of railway bed laying emergency stone self-discharging train of the present invention.
Fig. 2 is a middle transport unit scheme drawing.
Fig. 3 is the lateral plan of Fig. 2.
Fig. 4 is the structural representation of hopper 3.
Fig. 5 is the lateral plan of Fig. 4.
Fig. 6 is that trunkful conveyer 5 is formed scheme drawing.
Fig. 7 is the birds-eye view of Fig. 6.
Fig. 8 is that empty van conveyer 6 is formed scheme drawing.
Fig. 9 is the birds-eye view of Fig. 8.
Figure 10 is that head lifter 8 is formed scheme drawing.
Figure 11 is the lateral plan of Figure 10.
Figure 12 is that afterbody elevator 10 is formed scheme drawing.
Figure 13 is the birds-eye view of Figure 12.
Figure 14 is that head unloader 9 is formed scheme drawing.
Figure 15 is the lateral plan of Figure 14.
Figure 16 is hopper 3 mobile scheme drawing between head lifter 8 and head unloader 9.
Among the figure: 1. engine; 2. dull and stereotyped train; 3. hopper; 4. power and control system; 5. trunkful conveyer; 6. empty van conveyer; 7. integral support; 8. head lifter; 9. head unloader; 10. afterbody elevator; 11. carrying roller track; 12. guide roller track; 13. side direction baffle plate; 14. latching device; 15. casing; 16. lance; 17. trunkful carrying roller; 18. sprocket wheel; 19. trunkful guide roller; 20. trunkful feed drive reducing motor; 21. transmission shaft; 22. chain; 23. drive sprocket; 24. empty van carrying roller set; 25. empty van orienting roll wheels; 26. empty van chain type driving device; 27. head lifting table; 28. head fixed support; 29. horizontal guide wheel; 30. vertical guide wheel; 31. the head lifting drives reducing motor; 32. reel; 33. steel rope; 34. afterbody lifting drive; 35. afterbody lifting table; 36. afterbody fixed support; 37. cantilever girder; 38. support cylinder base; 39. tilt stand; 40. pitch drives reducing motor; 41. gear; 42. tooth bar; 43. reel cage; 44. hook; 45. power hydraulic pressure push rod; 46. swing bearing; 47. revolution drives reducing motor; 48. miniature gears.
The specific embodiment
Railway bed laying emergency stone self-discharging train provided by the invention, be railroad bed landslide to be speedily carried out rescue work or normal roadbed is built required building stones and is loaded on the hopper of this train in the stone pit, be transported to from the stone pit by this train again and close on landslide ground or lay ground, and a roadbed laying emergency stone self-discharging train that can automatically building stones be unloaded to the landslide point or lay.
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Railway bed laying emergency stone self-discharging train provided by the invention comprises engine 1, dull and stereotyped train groups and power supply and control system 4, building stones is housed on dull and stereotyped train groups carries and load and unload logistics system.
The structure of dull and stereotyped train groups is as shown in Figure 1: be made up of 12 joint flat trucks 2.Engine 1 is common engine, and it moves on railway for the dull and stereotyped train groups of permutation power is provided.Flat truck 2 is a railway freight dressing plate car, and it is used to load, and building stones are carried and the loading and unloading logistics system.
Building stones are carried and the loading and unloading logistics system, its structure as shown in Figure 1: form by 20 middle transport unit, head supply unit, afterbody supply unit, 40 hoppers 3 and power supply and control control system 4.Building stones are carried and the loading and unloading logistics system is carried as containerization with hopper 3 and the processing unit of loading and unloading, the hopper 3 that will be fully loaded with building stones in the stone pit successively is placed on the trunkful conveyer 5 of each middle transport unit lower floor, place a fully loaded hopper 3 on each trunkful conveyer 5, after transporting landslide ground to or lay ground from the stone pit by dull and stereotyped train groups, by the up and down circular flow of two strip transmission lines of hopper 3 in facade, each fully loaded hopper 3 on the train is migrated to the train head by following travel line, by head unloader 9 dead ahead or the dead ahead both sides of building stones at the train head are drawn off automatically, unloaded hopper 3 after discharging is intact is migrated to last vehicle of train by last travel line, sends back to travel line down by afterbody elevator 10.
Middle transport unit: referring to Fig. 1, Fig. 2, it is made up of two cover trunkful conveyers 5, a cover empty van conveyer 6 and an integral support 7.Integral support 7 comprises two-layer up and down, lower floor install that two cover trunkful conveyers 5 form that building stones are carried and the loading and unloading logistics system under a section of travel line, the upper strata install that a cover empty van conveyer 6 forms that building stones are carried and the loading and unloading logistics system on a section of travel line, these two sections travel lines are hopper 3 circular flow passages in facade.The integral support 7 that two cover trunkful conveyers 5, a cover empty van conveyer 6 are installed constitutes a middle transport unit, and two middle transport unit headtotails are installed on the flat truck 2.Circular flow channel connection in each middle transport unit, the following travel line that is communicated be will fully loaded building stones hopper 3 be sent to the train head and by the passage of the head supply unit discharging at this place, the last travel line of connection is that the unloaded hopper after discharging is finished is sent last vehicle of train back to and returned down the passage of travel line by the afterbody supply unit at this place.
The head supply unit: referring to Fig. 1, Figure 16, it comprises a cover head elevator 8, two cover trunkful conveyers 5 and a cover head unloader 9.In head lifter 8 and head unloader 9 a cover trunkful conveyer 5 is installed respectively.Head lifter 8 realizes the transition of fully loaded hopper from following delivery conduit to head unloader 9, and with the upwards transition of delivery conduit transfer of unloader 9 from the head of unloaded hopper.Head unloader 9 is realized dead ahead or the dead ahead both sides of all building stones from the train head are drawn off.The head supply unit is installed on the flat truck 2 of train head.
The afterbody supply unit: referring to Fig. 1, Figure 12, it comprises a cover afterbody elevator 10, a cover empty van conveyer 6.Empty van conveyer 6 is installed on the afterbody elevator 10, and afterbody elevator 10 is realized the transition of unloaded hopper from last delivery conduit to following delivery conduit.Afterbody supply unit and power supply and control control system 4 are installed on the flat truck 2 of last vehicle of train.
Hopper 3: referring to Fig. 4, Fig. 5, the processing unit that it is carried as the containerization loading and unloading of loading building stones, the open top container body structure that adopts the steel plate welding to make.The bottom of hopper 3 and side are welded with carrying roller track 11 and guide roller track 12, the bearing track that carrying roller track 11 moves on conveyer as hopper 3, the guide track that guide roller track 12 moves on conveyer as hopper 3.The two ends of hopper 3 are provided with side direction baffle plate 13 to be opened/closed, side direction baffle plate 13 tops and casing 15 are hinged, side direction baffle plate 13 belows have latching device 14 to be connected with casing 15, when hopper 3 inclination dischargings, the latching device 14 of side direction baffle plate 13 belows is opened, and building stones are pushed the baffle plate lower edge open and drawn off automatically under the effect of gravity.The two ends of hopper 3 also are provided with lance 16, when hopper 3 moves on the tilt stand 39 of head unloader 9 can with hook 44 automatic engagements on the tilt stand 39, when hopper 3 is tilted with tilt stand 39, can not come off from support.
Trunkful conveyer 5: referring to Fig. 6, Fig. 7, the roller mode of movement that it adopts chain type to drive, be used to transport hopper 3 that building stones are housed from after move forward or move backward in the past.Trunkful conveyer 5 respectively is provided with two covers on each middle transport unit, on head lifter 8 and head unloader 9 cover is set respectively.Trunkful conveyer 5 is made up of trunkful carrying roller set, trunkful orienting roll wheels and trunkful chain type driving device.Trunkful carrying roller set comprises two groups of parallel trunkful carrying rollers 17, on each trunkful carrying roller 17 sprocket wheel 18 is housed all, actuating device drives each trunkful carrying roller 17 by chain-driving and rotates, when hopper 3 is placed on the trunkful carrying roller 17, realize the parallel motion of hopper 3 on trunkful carrying roller 17.At the bearing of integral support 7 lower floors, at the bearing of the head lifting table 27 of head lifter 8 with on the bearing of tilt stand 39, trunkful carrying roller set 17 is housed all.Trunkful orienting roll wheels comprise two groups of parallel trunkful guide rollers 19, be installed in the two sides of integral support 7 or head lifting table 27 or afterbody lifting table 35 respectively, when hopper 3 is mobile on trunkful carrying roller 17, the mobile of hopper 3 play the guiding role, prevent that hopper 3 from wandering off.When the roller pitch arrangement of trunkful carrying roller set and trunkful orienting roll wheels need guarantee to make hopper 3 to move, the bottom of hopper 3 and the track of side strode across three pair rollers all the time at least, made the stressed even of hopper 3 tracks and carrying roller, and guiding steadily.The roller height of trunkful carrying roller set at every joint flat truck 2 both ends is designed to from low to high, can guarantee that hopper 3 can overcome the differences of height between the two joint flat trucks 2 during transition automatically between two joint flat trucks 2, and pulsation-free moves.The two side wheel spacings of trunkful orienting roll wheels at every joint flat truck 2 both ends are designed to descending, can guarantee to stop at when working on the bend when train, and guiding hopper 3 moves smooth and easy transition along bend between two joint flat trucks 2.The actuating device of trunkful conveyer 5 is made of trunkful feed drive reducing motor 20, transmission shaft 21, chain 22, drive sprocket 23.
Empty van conveyer 6: referring to Fig. 8, Fig. 9, the roller mode of movement that it also adopts chain type to drive, be used to transport empty charging box 3 by move behind the forward direction or from after move forward.Empty van conveyer 6 respectively is provided with a cover on each middle transport unit, a cover is set on afterbody elevator 10.Empty van conveyer 6 is made up of empty van carrying roller set 24, empty van orienting roll wheels 25 and empty van chain type driving device 26.Empty van chain type driving device 26 is made of empty van feed drive reducing motor, transmission shaft, chain.The actuating device of empty van conveyer 6, the composition of roller set and layout and trunkful conveyer 5 are similar, and just relevant parameters is less.
Head lifter 8: referring to Figure 10, Figure 11, it realizes the transition of full hopper 3 from following delivery conduit to head unloader 9, and with the upwards transition of delivery conduit transfer of unloader 9 from the head of unloaded hopper.Head lifter 8 is made up of head lifting drive and head lifting table 27 and head fixed support 28.Head lifting table 27 is at horizontal guide wheel 29, vertically under the draw of the directional tagging of guide wheel 30 and head lifting drive, can on the guide rail of head fixed support 28, move vertically, and be connected mutually with upper and lower delivery conduit and head unloader 9 respectively.One cover trunkful conveyer 5 is installed on the head lifting table 27.The head lifting drive adopts two cover duplex hoist machines, and this winch is made up of major parts such as head lifting reducing motor 31, reel 32, steel ropes 33, moves up and down by steel rope 33 traction head lifting tables 27.Whole head lifter 8 is installed on the flat truck 2 by head fixed support 28.
Afterbody elevator 10: referring to Figure 12, Figure 13, it realizes the transition of empty van from last delivery conduit to following delivery conduit.Afterbody elevator 10 is made up of afterbody lifting drive 34, afterbody lifting table 35 and afterbody fixed support 36.Afterbody lifting table 35 can move vertically on the guide rail of afterbody fixed support 36, and be connected mutually with upper and lower delivery conduit respectively under the draw of directional tagging horizontal, vertically guide wheel and afterbody lifting drive.One cover empty van conveyer 6 is installed on the afterbody lifting table 35.The composition of afterbody lifting drive 34 is similar to the head lifting drive, and just correlation parameter is less.Afterbody lifting drive 34 moves up and down by rope traction afterbody lifting table 35.Whole afterbody elevator 10 is installed on the flat truck 2 by afterbody fixed support 36.
Head unloader 9: referring to Figure 14, Figure 15, it is full circle swinging, cantilevered unloader, is made up of leaning device, swing type mechanism, cantilever girder 37 and support cylinder base 38.Leaning device comprises reclining drive device, tilt stand 39 and hopper hooking device, and leaning device is installed on the cantilever girder 37; Be furnished with a cover trunkful conveyer 5 on the tilt stand 39, an end and the cantilever girder 37 of tilt stand 39 are hinged, and tooth bar 42 ends of the other end and reclining drive device are hinged; Reclining drive device adopts the rack-and-gear transmission, form by pitch drives reducing motor 40, gear 41, tooth bar 42 and reel cage 43 etc., tooth bar 42 is done straight reciprocating motion under the driving of pitch drives reducing motor 40, order about the hinge of tilt stand 39 on cantilever girder 37 and rotate, thereby realize making the hopper 3 inclination dischargings that are fixed on the tilt stand 39; Reel cage 43 can be provided with the back lash that gear 41 and tooth bar 42 could be adjusted and guarantee to three track adjusting wheels around fixedly hinge rotation as the guide piece of tooth bar 42 motions on the reel cage 43.The hopper hooking device comprises hook 44 and power hydraulic pressure push rod 45, when hopper 3 moves on the tilt stand 39, lance 16 on the hopper 3 hits the into gib head of hook 44, when hopper 3 is tilted with tilt stand 39, hook 44 hooks hopper 3 can not come off it from support, after hopper 3 dischargings were finished, under the effect of power hydraulic pressure push rod 45, hook 44 was thrown off with lance 16.Swing type mechanism is made up of swing bearing 46 and device for revolving and driving, the effect of swing type mechanism be support and drive head unloader 9 on cantilever girder 37 and leaning device mounted thereto in horizontal surface, rotate, make head unloader 9 reach various discharging scope; Swing bearing 46 Internal and external cycles link with the flange of cantilever girder 37 and support cylinder base 38 respectively with bolt, with vertical power, horizontal force and the capsizing moment of bearing head unloader 9 rotating parts; Device for revolving and driving drives external toothing on reducing motor 47, miniature gears 48, the swing bearing 46 etc. by revolution to be formed, and the engagement by the external toothing on miniature gears 48 and the swing bearing 46 drives cantilever girder 37 and leaning device mounted thereto rotates in horizontal surface relative to support cylinder base 38.Support cylinder base 38 tops link to each other with swing bearing 46, and bottom and flat truck 2 are fixed.
Integral support 7: referring to Fig. 2, Fig. 3, it is a frame-type double-level-metal framing member, lower floor is used to install two cover trunkful conveyers 5, the upper strata is used to install 6, two integral supports 7 of a cover empty van conveyer and is placed on the flat truck 2 together with mounted two cover trunkful conveyers 5, empty van conveyer 6.
Railway bed laying emergency stone self-discharging train provided by the invention, its purposes is: railroad bed landslide is speedily carried out rescue work or normal roadbed is built required building stones and is loaded on the hopper of this train by the stone pit, be transported to from the stone pit by this train again and close on landslide ground or lay ground, and can automatically building stones be unloaded to the landslide point or lay point.
This train adopts the method that may further comprise the steps in application process:
1. vanning process:
(1) hopper 3 loads building stones;
(2) will be fully loaded with hopper 3 is placed on the head lifting table 27 successively;
(3) head lifting table 27 drops to delivery conduit;
(4) will be fully loaded with hopper 3 successively by trunkful conveyer 5 carries backward;
(5) repeat above-mentioned four steps, until filling the permutation train;
(6) transport landslide ground to or lay ground by the fully loaded train of engine 1 traction.
2. unload the case process:
(1) starts trunkful conveyer 5, the fully loaded hopper 3 case position that moves forward successively;
(2) head lifter 8 will be fully loaded with hopper and rise to the identical height of head unloader 9 from following delivery conduit;
(3) the trunkful conveyer 5 on startup head lifter 8 and the head unloader 9 makes hopper 3 move on the head unloader 9 and hook;
(4) head unloader 9 operation hoppers 3 dischargings comprise that rotation, rack-and-gear drive, the inclination discharging;
(5) head unloader 9 transports unloaded hopper to head lifting table 27 back;
(6) head lifter 8 with unloaded Skip hoisting to last delivery conduit;
(7) start empty van conveyer 6, unloaded hopper moves after on the last delivery conduit and is back to afterbody;
(8) afterbody elevator 10 is admitted unloaded hopper;
(9) afterbody elevator 10 carries unloaded hopper and descends and dock with following delivery conduit;
(10) successively unloaded hopper is moved forward by trunkful conveyer 5.
(11) repeat the described action of above-mentioned steps, unsnatch until car load.
Wherein:, can carry out step (7) simultaneously to step (10) carrying out the above-mentioned case step (1) of unloading to the process of step (6).
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100605677A CN101475003B (en) | 2009-01-19 | 2009-01-19 | Railway bed laying emergency stone self-discharging train |
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| CN2009100605677A CN101475003B (en) | 2009-01-19 | 2009-01-19 | Railway bed laying emergency stone self-discharging train |
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| WO2014075959A1 (en) * | 2012-11-15 | 2014-05-22 | K & K Maschinenentwicklungs Gmbh & Co. Kg | System for rail-bound transport of objects |
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- 2009-01-19 CN CN2009100605677A patent/CN101475003B/en not_active Expired - Fee Related
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| WO2014075959A1 (en) * | 2012-11-15 | 2014-05-22 | K & K Maschinenentwicklungs Gmbh & Co. Kg | System for rail-bound transport of objects |
| WO2014075960A1 (en) * | 2012-11-15 | 2014-05-22 | K & K Maschinenentwicklungs Gmbh & Co. Kg | System for track-bound transportation of objects |
| CN105452084B (en) * | 2013-06-04 | 2017-10-13 | 哈斯科公司 | Repeat system and method for railcar |
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| CN110055828A (en) * | 2019-04-28 | 2019-07-26 | 中铁二院工程集团有限责任公司 | A kind of embankment heavy grade cogwheel railway structure and construction method |
| CN110055828B (en) * | 2019-04-28 | 2023-09-26 | 中铁二院工程集团有限责任公司 | Construction method of embankment large-gradient toothed rail railway structure |
| CN112340485A (en) * | 2020-12-15 | 2021-02-09 | 北京国电龙源环保工程有限公司 | Movable automobile discharging platform and discharging method based on same |
| CN113494030A (en) * | 2021-07-27 | 2021-10-12 | 武汉理工大学 | Multi-channel ballast blowing device and method |
| CN115402285A (en) * | 2022-09-13 | 2022-11-29 | 成都威奥轨道科技有限公司 | A Method of Accelerating the Mitigation of Vehicles in the Rear of a Long Train |
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| CN101475003B (en) | 2010-11-10 |
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