CN110747799A - Sand cleaning device and method for desert road section rails - Google Patents
Sand cleaning device and method for desert road section rails Download PDFInfo
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- CN110747799A CN110747799A CN201911003884.5A CN201911003884A CN110747799A CN 110747799 A CN110747799 A CN 110747799A CN 201911003884 A CN201911003884 A CN 201911003884A CN 110747799 A CN110747799 A CN 110747799A
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- sand
- sand cleaning
- rail
- vehicle body
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H8/00—Removing undesirable matter from the permanent way of railways; Removing undesirable matter from tramway rails
- E01H8/10—Removing undesirable matter from rails, flange grooves, or the like railway parts, e.g. removing ice from contact rails, removing mud from flange grooves
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a sand cleaning device and a sand cleaning method for rails on desert sections, wherein the sand cleaning device comprises a vehicle body, one end of the vehicle body is fixedly connected with a sand cleaning plate, a sand cleaning block is fixedly connected in the sand cleaning plate, a sand cleaning pipe is arranged in the vehicle body and extends into the sand cleaning plate, the sand cleaning pipe is connected with the sand cleaning block, one end of the sand cleaning pipe is rotatably connected with a first driving rod, a second driving rod is rotatably connected in the sand cleaning block, a working area is arranged in the sand cleaning block, one end of the second driving rod is positioned in the working area, a first driving mechanism is arranged in the working area and is connected with the second driving rod, and the sand cleaning pipe is communicated with the sand cleaning block. Has the advantages that: the sand cleaning device has the advantages of stable structure, simple operation, scientific and reasonable design, short production period, low manufacturing cost, good cleaning effect on sand buried on the rail, and convenience for moving the cleaned sand out of the rail.
Description
The invention relates to a divisional application of a sand cleaning device for a rail on a desert road section, which has an application date of 2018, 06, 11 and an application number of CN 201810596846.4.
Technical Field
The invention relates to the technical field of sand cleaning devices for rails on desert road sections, in particular to a sand cleaning device and a sand cleaning method for rails on desert road sections.
Background
Railway tracks are called rails, tracks and the like for short, are mainly used on railways and cooperate with a point switch to enable a train to walk without steering; railway tracks are usually made up of two parallel rails which are fixed on sleepers, under which there is ballast. The railway track is fastened by railway accessories such as a track brace, a fastener, a track pressing device, a track clamping plate, an elastic strip, a railway spike and the like; railway rails are made of steel and can bear larger weight than other materials. The sleeper, also known as a sleeper, or a sleeper, functions to distribute the weight of the rail and the pressure on the rail separately, to maintain a fixed gauge, and to maintain the gauge of the rail, originally a sleeper, and now a concrete sleeper.
The desert inside usually has more abundant mineral resources, and these mineral resources are after adopting, in order to make these mineral resources transport to the city in process, sell, can carry out the distant place to these mineral resources through the train, and when the operation of train, the indispensable partly during the rail, and because all be sand on the desert, often can make sand bury the rail because the blowing of wind, the transportation of the mineral resources of influence train that can be great like this.
For this reason, we propose a sand cleaning device for the rails of the desert section; the existing sand cleaning device for the rails on the desert road sections is simple in structure, poor in sand cleaning effect on the buried sand on the rails, and the cleaned sand is not convenient to move out of the rails.
Disclosure of Invention
The invention aims to solve the problems that the prior sand cleaning device for the rail on the desert road section has a simple structure, has poor cleaning effect on sand buried on the rail and is inconvenient to move the cleaned sand out of the rail, and provides the sand cleaning device for the rail on the desert road section.
In order to achieve the purpose, the invention adopts the following technical scheme: a sand cleaning device for a rail in a desert section comprises a vehicle body, wherein one end of the vehicle body is fixedly connected with a sand cleaning plate, a sand cleaning block is fixedly connected in the sand cleaning plate, a sand cleaning pipe is arranged in the vehicle body and extends into the sand cleaning plate, the sand cleaning pipe is connected with the sand cleaning block, one end of the sand cleaning pipe is rotatably connected with a first driving rod, a second driving rod is rotatably connected in the sand cleaning block, a working area is arranged in the sand cleaning block, one end of the second driving rod is positioned in the working area, a first driving mechanism is arranged in the working area and is connected with the second driving rod, the sand cleaning pipe is communicated with the sand cleaning block, a feeding belt is sleeved on the first driving rod and the second driving rod, a plurality of shifting plates are fixedly connected on the feeding belt, a storage barrel is arranged in the vehicle body, a material collecting pipe is arranged at the lower end of the storage barrel, the material collecting pipe is connected with a stirring rod in a rotating mode, blades are fixedly connected to the stirring rod, a cavity is formed in the vehicle body, one end of the stirring rod is located in the cavity, a second driving mechanism is arranged in the cavity and connected with the stirring rod, and a plurality of track wheels are symmetrically and rotatably connected to the lower end of the vehicle body.
In foretell a sand removal device for desert highway section rail, first actuating mechanism includes that vertical rotation connects the pivot in the workspace, the cover is equipped with first cloth band pulley in the pivot, the cover is equipped with second cloth band pulley on the second actuating lever, the common cover is equipped with the drive belt on first cloth band pulley and the second cloth band pulley, it is equipped with the worm wheel still to overlap in the pivot, the first motor of fixedly connected with on the inside wall of workspace, the drive end of first motor is equipped with the worm, and worm wheel meshing.
In foretell a sand removal device for desert highway section rail, second actuating mechanism is including fixing the second motor on the cavity inside wall, the drive end of second motor is equipped with the dwang, the first bevel gear of one end fixedly connected with of second motor is kept away from to the dwang, the cover is equipped with second bevel gear on the puddler, and first bevel gear and second bevel gear meshing.
In the sand cleaning device for the rails on the desert road section, the inner side wall of the working area is fixedly connected with the supporting block, and one end, far away from the first motor, of the worm is rotatably connected with the side wall of the supporting block.
In foretell a sand removal device for desert highway section rail, vertical fixedly connected with fixed block in the cavity, and the fixed block cover is established on the dwang and is rotated with the dwang and be connected.
In the sand cleaning device for the rails on the desert road sections, the sand cleaning block is provided with the sand cleaning groove, the side wall of the sand cleaning groove is obliquely provided with the plurality of spray pipes, and the sand cleaning groove is communicated with the ground.
In the sand cleaning device for the rails on the desert section, the upper end of the vehicle body is fixedly connected with the cab.
In the sand cleaning device for the rails on the desert road sections, the side wall of the vehicle body is communicated with the sand outlet pipe, the sand outlet pipe is communicated with the storage bucket, and the stirring rod is positioned in the sand outlet pipe.
Compared with the prior art, the sand cleaning device for the rails of the desert road section has the advantages that: 1. the sand cleaning device has the advantages of stable structure, simple operation, scientific and reasonable design, short production period, low manufacturing cost, good cleaning effect on sand buried on the rail, and convenience for moving the cleaned sand out of the rail; 2. through setting up the sand removal piece in the sand removal board, the first motor that is equipped with in the sand removal piece, the worm of first motor drive end, pivot in the sand removal piece, the worm wheel of establishing overlaps in the pivot, the first cloth band pulley of establishing overlaps in the pivot, the second actuating lever in the sand removal piece, the second cloth band pulley of establishing overlaps on the second actuating lever, the drive belt of establishing on first cloth band pulley and the second cloth band pulley, the pay-off area of establishing on the second actuating lever, the storage vat of establishing in the automobile body, the blade on stirring version and the puddler in the storage vat, the play sand pipe that communicates with the storage vat, can be better carry out more effective clearance to the sand in the rail, make the sand can be better get rid of the rail outside.
Drawings
FIG. 1 is a schematic structural diagram of a sand cleaning device for desert section rails according to the present invention;
FIG. 2 is a schematic view of a sand-cleaning block structure of a sand-cleaning device for a rail on a desert road section according to the present invention;
FIG. 3 is a schematic structural diagram of a material storage tank of the sand cleaning device for the rails of the desert section according to the present invention;
fig. 4 is a rear view of a sand removing device for a rail on a desert road according to the present invention;
FIG. 5 is a front schematic view of a sand removing device for a rail used in a desert section according to the present invention;
fig. 6 is a schematic structural diagram of a first driving mechanism of the sand cleaning device for the rails on the desert section.
In the figure: the device comprises a vehicle body 1, a track wheel 2, a sand cleaning plate 3, a sand cleaning block 4, a feeding belt 5, a storage tank 6, a stirring rod 7, a cab 8, a first motor 9, a second driving rod 10, a spray pipe 11, a second motor 12, a rotating rod 13, a fixed block 14, a first bevel gear 15, a second bevel gear 16, a sand outlet pipe 17, a worm 18, a rotating shaft 19, a supporting block 20, a first cloth belt wheel 21, a transmission belt 22 and a second cloth belt wheel 23.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-6, a sand cleaning device for a rail in a desert section comprises a vehicle body 1, wherein one end of the vehicle body 1 is fixedly connected with a sand cleaning plate 3, a sand cleaning block 4 is fixedly connected in the sand cleaning plate 3, a sand cleaning groove is formed in the sand cleaning block 4, a plurality of spray pipes 11 are obliquely arranged on the side wall of the sand cleaning groove, and the sand cleaning groove is communicated with the ground; a sand cleaning pipe is arranged in a vehicle body 1 and extends into a sand cleaning plate 3, the sand cleaning pipe is connected with a sand cleaning block 4, one end of the sand cleaning pipe is rotatably connected with a first driving rod, a second driving rod 10 is rotatably connected in the rotating block 4, a working area is arranged in the sand cleaning block 4, one end of the second driving rod 10 is positioned in the working area, a first driving mechanism is arranged in the working area and is connected with the second driving rod 10, the sand cleaning pipe is communicated with the sand cleaning block 4, a feeding belt 5 is sleeved on the first driving rod and the second driving rod 10, a plurality of shifting plates are fixedly connected on the feeding belt 5, the feeding pipe 5 is positioned in a sand cleaning groove and is convenient to convey sand blown up by a spray pipe 11, a storage barrel 6 is arranged in the vehicle body 1, a material collecting pipe is arranged at the lower end of the storage barrel 6 and is connected with a stirring rod 7, blades are fixedly connected on the stirring rod 7, and a spiral feeding structure is formed by the stirring rod 7 and the blades, the sand conveying device is used for conveying sand, a cavity is formed in the vehicle body 1, one end of the stirring rod 7 is located in the cavity, a second driving mechanism is arranged in the cavity and connected with the stirring rod 7, and a plurality of track wheels 2 are symmetrically and rotatably connected to the lower end of the vehicle body 1; the upper end of the vehicle body 1 is fixedly connected with a cab 8.
In the invention, a first driving mechanism comprises a rotating shaft 19 vertically and rotatably connected in a working area, a first cloth belt wheel 21 is sleeved on the rotating shaft 19, a second cloth belt wheel 23 is sleeved on a second driving rod 10, a driving belt 22 is sleeved on the first cloth belt wheel 21 and the second cloth belt wheel 23 together, a worm wheel is further sleeved on the rotating shaft 19, a first motor 9 is fixedly connected on the inner side wall of the working area, a worm 18 is arranged at the driving end of the first motor 9, and the worm 18 is meshed with the worm wheel; a supporting block 20 is fixedly connected to the inner side wall of the working area, and one end, far away from the first motor 9, of the worm 18 is rotatably connected with the side wall of the supporting block 20; the second driving mechanism comprises a second motor 12 fixed on the inner side wall of the cavity, a rotating rod 13 is arranged at the driving end of the second motor 12, a first bevel gear 15 is fixedly connected to one end, far away from the second motor 12, of the rotating rod 13, a second bevel gear 16 is sleeved on the stirring rod 7, and the first bevel gear 15 is meshed with the second bevel gear 16; a fixed block 14 is vertically and fixedly connected in the air, and the fixed block 14 is sleeved on the rotating rod 13 and is rotatably connected with the rotating rod 13; the side wall of the vehicle body 1 is communicated with a sand outlet pipe 17, the sand outlet pipe 17 is communicated with the storage vat 6, and the stirring rod 7 is positioned in the sand outlet pipe 17.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
When the device is used, the rail wheel 2 on the vehicle body 1 is placed on a rail, then the vehicle body 1 is driven by a person to run on the rail, then sand in the rail is blown through the spray pipe 11, so that the sand in the rail is raised, then the worm 18 is driven by the first motor 9 to rotate on the supporting block 20, the worm 18 is meshed with the worm wheel on the rotating shaft 19, and then the first cloth belt wheel 21 on the rotating shaft 19 can rotate, because the first cloth belt wheel 21 and the second cloth belt wheel 23 are sleeved with the transmission belt 22, the second driving rod 10 can be driven to rotate, so that the second driving rod 10 drives the feeding belt 5 to convey the sand in the rail into the storage barrel 6, the sand falls into the collection pipe in the storage barrel 6, and then the first bevel gear 15 on the rotating rod 13 is driven by the second motor 12 to rotate on the fixed block 14, due to the fact that the rotating rod 13 is meshed with the second bevel gear 16 on the stirring rod 7, the stirring rod 7 can extrude sand in the aggregate pipe, the sand is discharged through the sand discharging pipe 17 on the outer side of the vehicle body 1, the sand in the rail is discharged to the outer side of the rail, and sand cleaning efficiency is improved.
Although the terms vehicle body 1, rail wheel 2, sand cleaning plate 3, sand cleaning block 4, feeding belt 5, storage bin 6, stirring rod 7, cab 8, first motor 9, second driving rod 10, spraying pipe 11, second motor 12, rotating rod 13, fixing block 14, first bevel gear 15, second bevel gear 16, sand outlet pipe 17, worm 18, rotating shaft 19, supporting block 20, first cloth pulley 21, driving belt 22, second cloth pulley 23, etc. are used more extensively herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (7)
1. A sand cleaning device for a rail in a desert road section comprises a vehicle body (1) and is characterized in that one end of the vehicle body (1) is fixedly connected with a sand cleaning plate (3), a sand cleaning block (4) is fixedly connected in the sand cleaning plate (3), a sand cleaning pipe is arranged in the vehicle body (1) and extends into the sand cleaning plate (3), the sand cleaning pipe is connected with the sand cleaning block (4), one end of the sand cleaning pipe is rotatably connected with a first driving rod, a second driving rod (10) is rotatably connected in the sand cleaning block (4), a working area is arranged in the sand cleaning block (4), one end of the second driving rod (10) is located in the working area, a first driving mechanism is arranged in the working area and is connected with the second driving rod (10), the sand cleaning pipe is communicated with the sand cleaning block (4), a feeding belt (5) is sleeved on the first driving rod and the second driving rod (10), the feeding belt (5) is fixedly connected with a plurality of shifting plates, a storage barrel (6) is arranged in the vehicle body (1), a material collecting pipe is arranged at the lower end of the storage barrel (6), a stirring rod (7) is connected in the material collecting pipe in a rotating mode, blades are fixedly connected to the stirring rod (7), a cavity is formed in the vehicle body (1), one end of the stirring rod (7) is located in the cavity, a second driving mechanism is arranged in the cavity and connected with the stirring rod (7), and a plurality of track wheels (2) are symmetrically connected to the lower end of the vehicle body (1) in a rotating mode; a sand cleaning groove is formed in the sand cleaning block (4), a plurality of spray pipes (11) are obliquely arranged on the side wall of the sand cleaning groove, and the sand cleaning groove is communicated with the ground; the upper end of the vehicle body (1) is fixedly connected with a cab (8).
2. The sand cleaning device for the rails in the desert road sections as claimed in claim 1, wherein the first driving mechanism comprises a rotating shaft (19) which is vertically and rotationally connected in a working area, a first cloth belt wheel (21) is sleeved on the rotating shaft (19), a second cloth belt wheel (23) is sleeved on the second driving rod (10), a driving belt (22) is sleeved on the first cloth belt wheel (21) and the second cloth belt wheel (23) together, a worm wheel is further sleeved on the rotating shaft (19), a first motor (9) is fixedly connected to the inner side wall of the working area, a worm (18) is arranged at the driving end of the first motor (9), and the worm (18) is meshed with the worm wheel.
3. The sand cleaning device for the railway track on the desert road section as claimed in claim 1, wherein the second driving mechanism comprises a second motor (12) fixed on the inner side wall of the cavity, the driving end of the second motor (12) is provided with a rotating rod (13), one end of the rotating rod (13) far away from the second motor (12) is fixedly connected with a first bevel gear (15), the stirring rod (7) is sleeved with a second bevel gear (16), and the first bevel gear (15) is meshed with the second bevel gear (16).
4. The sand cleaning device for the railway track of the desert section as claimed in claim 2, wherein the inner side wall of the working area is fixedly connected with a supporting block (20), and one end of the worm (18) far away from the first motor (9) is rotatably connected with the side wall of the supporting block (20).
5. The sand cleaning device for the rail on the desert road section as claimed in claim 3, wherein the cavity is vertically and fixedly connected with a fixed block (14), and the fixed block (14) is sleeved on the rotating rod (13) and is rotatably connected with the rotating rod (13).
6. The sand cleaning device for the railway track on the desert section as claimed in claim 1, wherein a sand outlet pipe (17) is communicated with the side wall of the vehicle body (1), the sand outlet pipe (17) is communicated with the storage bucket (6), and the stirring rod (7) is positioned in the sand outlet pipe (17).
7. A method of cleaning sand using the sand cleaning apparatus according to any one of claims 1 to 6, characterized by: when the device is used, the rail wheel (2) on the vehicle body (1) is placed on a rail, then the vehicle body (1) is driven by a person to run on the rail, then the sand in the rail is blown through the spray pipe (11) so as to raise the sand in the rail, then the worm (18) is driven by the first motor (9) to rotate on the supporting block (20), the worm (18) is meshed with the worm wheel on the rotating shaft (19), so that the first cloth belt wheel (21) on the rotating shaft (19) can rotate, and the first cloth belt wheel (21) and the second cloth belt wheel (23) are sleeved with the transmission belt (22) so as to drive the second driving rod (10) to rotate, so that the second driving rod (10) drives the feeding belt (5) to convey the sand in the rail into the storage barrel (6), and the sand flows into the aggregate in the storage barrel (6), then drive first bevel gear (15) on dwang (13) through second motor (12) and rotate on fixed block (14), because dwang (13) and second bevel gear (16) meshing on puddler (7), can make puddler (7) extrude the sand in the collecting tube then for the sand is got rid of through sand outlet pipe (17) in automobile body (1) outside, discharges the rail outside to the sand in the rail, increases the efficiency of cleaning sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003884.5A CN110747799A (en) | 2018-06-11 | 2018-06-11 | Sand cleaning device and method for desert road section rails |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003884.5A CN110747799A (en) | 2018-06-11 | 2018-06-11 | Sand cleaning device and method for desert road section rails |
| CN201810596846.4A CN108867535B (en) | 2018-06-11 | 2018-06-11 | A kind of clear husky device for desert section rail |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810596846.4A Division CN108867535B (en) | 2018-06-11 | 2018-06-11 | A kind of clear husky device for desert section rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110747799A true CN110747799A (en) | 2020-02-04 |
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ID=64338638
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911003884.5A Pending CN110747799A (en) | 2018-06-11 | 2018-06-11 | Sand cleaning device and method for desert road section rails |
| CN201810596846.4A Active CN108867535B (en) | 2018-06-11 | 2018-06-11 | A kind of clear husky device for desert section rail |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810596846.4A Active CN108867535B (en) | 2018-06-11 | 2018-06-11 | A kind of clear husky device for desert section rail |
Country Status (1)
| Country | Link |
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| CN (2) | CN110747799A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172945B (en) * | 2019-05-31 | 2021-04-23 | 中国铁建高新装备股份有限公司 | Track bed sand removing vehicle |
| CN111005344B (en) * | 2019-12-04 | 2021-05-25 | 徐州金沙田环境科技有限公司 | Railway sand removing device for desert zone |
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| JPH09177056A (en) * | 1995-12-27 | 1997-07-08 | East Japan Railway Co | Guard rail clearance cleaner for grade crossing |
| CN101949141A (en) * | 2010-09-28 | 2011-01-19 | 武汉长海高新技术有限公司 | Sand-dust removing device |
| CN102433853A (en) * | 2011-09-01 | 2012-05-02 | 内蒙古工业大学 | Trailer type sand elimination machine for railway |
| CN102644256A (en) * | 2012-04-13 | 2012-08-22 | 湖南国耀重工科技有限公司 | Railway rail surface vacuum sand cleaning vehicle |
| CN103526714A (en) * | 2013-10-31 | 2014-01-22 | 南车戚墅堰机车有限公司 | Sand removal engineering truck |
| CN204455978U (en) * | 2014-12-31 | 2015-07-08 | 昆明中铁大型养路机械集团有限公司 | Railway ballast removes sand car |
| CN104831672A (en) * | 2015-05-11 | 2015-08-12 | 刘洪建 | Railway sand removal device |
| CN207211056U (en) * | 2017-07-18 | 2018-04-10 | 马福聚 | A kind of railway device husky clearly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203801288U (en) * | 2014-04-12 | 2014-09-03 | 刘亮小 | Desert shrub reaping machine |
| AT518603B1 (en) * | 2016-04-22 | 2018-02-15 | Siemens Ag Oesterreich | Entsandungseinrichtung |
| CN106759059A (en) * | 2016-12-08 | 2017-05-31 | 广西职业技术学院 | The sandbeach cleaning trolley of tractor-drawn |
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- 2018-06-11 CN CN201911003884.5A patent/CN110747799A/en active Pending
- 2018-06-11 CN CN201810596846.4A patent/CN108867535B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177056A (en) * | 1995-12-27 | 1997-07-08 | East Japan Railway Co | Guard rail clearance cleaner for grade crossing |
| CN101949141A (en) * | 2010-09-28 | 2011-01-19 | 武汉长海高新技术有限公司 | Sand-dust removing device |
| CN102433853A (en) * | 2011-09-01 | 2012-05-02 | 内蒙古工业大学 | Trailer type sand elimination machine for railway |
| CN102644256A (en) * | 2012-04-13 | 2012-08-22 | 湖南国耀重工科技有限公司 | Railway rail surface vacuum sand cleaning vehicle |
| CN103526714A (en) * | 2013-10-31 | 2014-01-22 | 南车戚墅堰机车有限公司 | Sand removal engineering truck |
| CN204455978U (en) * | 2014-12-31 | 2015-07-08 | 昆明中铁大型养路机械集团有限公司 | Railway ballast removes sand car |
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| CN207211056U (en) * | 2017-07-18 | 2018-04-10 | 马福聚 | A kind of railway device husky clearly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108867535B (en) | 2019-12-03 |
| CN108867535A (en) | 2018-11-23 |
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Application publication date: 20200204 |