US20200189062A1 - Rail grinding machine displaceable manually on the rails of a track - Google Patents
Rail grinding machine displaceable manually on the rails of a track Download PDFInfo
- Publication number
- US20200189062A1 US20200189062A1 US16/615,939 US201816615939A US2020189062A1 US 20200189062 A1 US20200189062 A1 US 20200189062A1 US 201816615939 A US201816615939 A US 201816615939A US 2020189062 A1 US2020189062 A1 US 2020189062A1
- Authority
- US
- United States
- Prior art keywords
- grinding
- drive motor
- grinding tool
- blower
- rail
- 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.)
- Abandoned
Links
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/004—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding rails, T, I, H or other similar profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/08—Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators
Definitions
- the invention relates to a rail grinding machine, which is displaceable manually on the rails of a track in a longitudinal direction, the rail grinding machine comprising
- Rail grinding machines of this type which are known from DE 20 2010 007 264 U1, for example, are very flexible in use and can be moved rapidly from one position to be machined to another, for example for grinding the welding beads between weld joints.
- Rail grinding machines of this type there is the requirement that they should provide a maximum grinding performance and a high grinding quality at the same time.
- the invention is based on the object of refining a rail grinding machine of the generic type in such a way as to provide an improved grinding performance as well as an improved grinding quality.
- this object is achieved for a rail grinding machine according to the preamble of claim 1 in such a way that a blower is arranged above the grinding tool in order to move air downwardly past the drive motor and the grinding tool.
- This measure ensures that the aspirated air is guided past the drive motor, causing it to be cooled to the required extent, and that this air, which is at the same time the cooling exhaust air of the motor, is then guided past the grinding tool, causing the grinding tool to be cooled as well, which results in an increased service life and, therefore, an increased grinding performance thereof. Guiding the air from the motor downwardly past the grinding tool will cause the air to strike the rail head surface such that chips and metal dust adhering thereto are removed. This increases the grinding quality, in other words the surface roughness of the ground rail head surface is reduced.
- the effects achieved according to the invention are optimized in that a jacket is provided, which surrounds the drive motor and the grinding tool at least partly, with air ducts being formed between the jacket and the drive motor on the one hand and the grinding tool on the other, the air ducts being connected to the blower. This ensures that a targeted and, therefore, highly efficient air guidance past the motor and then towards the grinding tool is achieved.
- the blower is arranged between the drive motor and the grinding tool, wherein the air duct between the drive motor and the jacket is an air intake duct while the duct between the grinding tool and the jacket is an exhaust air duct.
- An optimum design of the blower is achieved if it has an impeller that is provided with a cover with a central intake opening and is coupled to the drive shaft in a co-rotational manner.
- the air flows from the intake duct between the jacket and the drive motor to the central opening, the air flows through the gap between the housing of the drive motor and the cover, with the result that the drive motor is also cooled at its front end.
- the air intake duct is extended, between the cover and the drive motor, towards the intake opening.
- the grinding apparatus has, in the vast majority of cases, a servo-motor arranged above the drive motor for the axial displacement of the drive shaft, which enables the grinding tool to be fed towards the rail and readjusted in the event of corresponding wear.
- the blower is fastened to the drive shaft in such a way that it is not displaceable axially in relation to the drive shaft. In other words, the blower is moved together with the grinding tool, causing the disk-shaped gap between the drive motor and the blower to be increased.
- FIG. 1 shows a side view of a manually guided rail grinding machine
- FIG. 2 shows a vertical longitudinal section through the grinding apparatus of the grinding machine as shown in FIG. 1 .
- the grinding machine 1 shown in FIG. 1 for grinding in each case one rail 2 of a track has a machine frame 3 , which is guided on the rail 2 via guide rolls 4 .
- the frame 3 is supported on the other rail (not shown) of the track as is common practice in practical application and known from DE 20 2010 007 264 U1.
- the machine frame 3 is provided with handles 5 allowing the grinding machine 1 to be arranged on and removed from the rail.
- a grinding unit 6 is mounted such as to be pivotable about a pivot axis 7 parallel to the rail 2 .
- This grinding unit 6 has a mounting bracket 8 , which is mounted, at its ends, in pivot bearings 9 disposed on the machine frame 3 , the pivot bearings 9 defining the pivot axis 7 and being supported on the rail 2 by means of sensing rollers 10 .
- the upwardly bent mounting bracket 8 carries a grinding apparatus 11 arranged approximately in the center thereof.
- This grinding apparatus 11 has, at its center, an electric grinding drive motor 12 and a servo-motor 13 , which is also electric, the servo-motor being arranged above said grinding drive motor 12 .
- a grinding tool 14 configured as a cup grinding wheel is provided below the grinding drive motor 12 .
- the drive motor 12 and the servo-motor 13 are supplied with electrical energy from an energy supply module arranged on the mentioned cross-beam, for example an electric generator, driven by means of an Otto-cycle engine, with a downstream storage battery as is common practice in practical application and known from DE 20 2010 007 264 U1.
- the grinding apparatus 11 is supplied with energy via a line 15 .
- the mounting bracket 8 with the grinding apparatus 11 is pivoted manually by means of a pivot spindle drive 16 .
- the grinding apparatus 11 has a housing 17 , which is firmly connected to the mounting bracket 8 .
- the drive motor 12 is arranged below the mounting bracket 8 .
- the drive motor 12 is a so-called external rotor motor the stator 18 of which is firmly connected to the housing 17 .
- the rotor 19 which is arranged in the housing 17 radially outside the stator 18 , is connected to the drive shaft 20 for the grinding tool 14 in a non-rotational manner while the drive shaft 20 , however, is displaceable in relation to the rotor 19 in the direction of its longitudinal center axis 21 forming the axis of rotation.
- the rotor 19 With its inner rotor sleeve 22 that accommodates the drive shaft 20 , the rotor 19 is rotatable in the stator 18 by means of roller bearings 23 but is mounted in such a way as to be non-displaceable in the direction of the longitudinal center axis 21 . Between the stator 18 and the radially outer sleeve-like rotor portion 24 , the stator laminations 25 are arranged.
- the servo-motor 13 is arranged on the housing 17 , which is capable of driving, by means of its servo-motor shaft 26 , a threaded spindle 27 firmly connected thereto of a spindle nut drive 28 .
- the threaded spindle 27 is arranged in a spindle nut 29 , which moves the drive shaft 20 in the direction of the axis 21 when the servo-motor shaft 26 and, therefore, the threaded spindle 27 , are being rotated, causing the grinding tool 14 to be shifted in the direction of the axis 21 as well.
- the drive motor 12 On its lower side, the drive motor 12 is closed by means of a cover plate 30 , which is firmly connected to the housing 17 .
- a blower 31 is arranged, which is non-rotationally and non-displaceably connected to the drive shaft 20 and is shifted together with the drive shaft 20 in the direction of the longitudinal center axis 21 when the drive shaft 20 is being displaced.
- the distance between the blower 31 and the grinding tool 14 is unchangeable whereas the distance between the blower 31 and the drive motor 12 changes in the event of said axial displacements explained above.
- the blower 31 has an impeller 32 , which has radially extending blades 33 .
- the blades 33 are covered by a cover 34 , which has a large central opening 35 .
- an air gap 36 is formed, which changes its axial width when the grinding tool 14 is being shifted as explained above.
- the cover 34 is bent downwardly in its outer area such that a downwardly directed deflecting portion 37 is formed that guides the air towards the outer circumference 38 of the grinding tool 14 .
- the drive motor 12 , the blower 31 and the grinding tool 14 are surrounded by a substantially cylindrical jacket 39 , which defines an air intake duct 40 between the jacket 39 and the region of the housing 17 that is associated to the drive motor 12 .
- This is adjoined by the air gap 36 so the aspirated air flows around the outer circumference and the lower side of the drive motor 12 in such a way that a corresponding cooling effect is obtained.
- the air is aspirated centrally through the opening 35 of the blower 31 and accelerated radially outwardly by means of the impeller 32 and discharged again in the direction of the rail 2 through an exhaust air duct 41 between the grinding tool 14 and the jacket 39 .
- the grinding tool is cooled in this manner. Also, grinding chips disposed on the rail 2 are blown away so the grinding head is cleaned.
- the air flow as a whole is designated by reference numeral 42 .
- the jacket 39 is provided with lateral protective plates 43 serving as a protection against free-flowing chips.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
A rail grinding machine, which is displaceable manually on the rails of a track in a longitudinal direction with a machine frame supportable on a rail by way of guide rolls and a grinding apparatus mounted on the machine frame in such a way as to be pivotable about a pivoting axis running in the longitudinal direction has a grinding drive motor with a drive shaft for a grinding tool to be arranged below the drive motor, the grinding tool being drivable for rotation. A blower is arranged above the grinding tool which moves air downwardly past the drive motor and the grinding tool.
Description
- The present patent application claims priority of German utility model application No. DE 20 2017 103 078.4 the content of which is incorporated herein by reference.
- The invention relates to a rail grinding machine, which is displaceable manually on the rails of a track in a longitudinal direction, the rail grinding machine comprising
-
- a machine frame supportable on a rail by means of guide rolls, and
- a grinding apparatus mounted on the machine frame in such a way as to be pivotable about a pivoting axis running in the longitudinal direction,
- the grinding apparatus having a grinding drive motor with a drive shaft for a grinding tool to be arranged below the drive motor, the grinding tool being drivable for rotation by means of the grinding drive motor.
- Rail grinding machines of this type, which are known from DE 20 2010 007 264 U1, for example, are very flexible in use and can be moved rapidly from one position to be machined to another, for example for grinding the welding beads between weld joints. As a general rule, even for manually displaceable rail grinding machines of this type, there is the requirement that they should provide a maximum grinding performance and a high grinding quality at the same time.
- Therefore, the invention is based on the object of refining a rail grinding machine of the generic type in such a way as to provide an improved grinding performance as well as an improved grinding quality.
- According to the invention, this object is achieved for a rail grinding machine according to the preamble of claim 1 in such a way that a blower is arranged above the grinding tool in order to move air downwardly past the drive motor and the grinding tool.
- This measure ensures that the aspirated air is guided past the drive motor, causing it to be cooled to the required extent, and that this air, which is at the same time the cooling exhaust air of the motor, is then guided past the grinding tool, causing the grinding tool to be cooled as well, which results in an increased service life and, therefore, an increased grinding performance thereof. Guiding the air from the motor downwardly past the grinding tool will cause the air to strike the rail head surface such that chips and metal dust adhering thereto are removed. This increases the grinding quality, in other words the surface roughness of the ground rail head surface is reduced.
- The effects achieved according to the invention are optimized in that a jacket is provided, which surrounds the drive motor and the grinding tool at least partly, with air ducts being formed between the jacket and the drive motor on the one hand and the grinding tool on the other, the air ducts being connected to the blower. This ensures that a targeted and, therefore, highly efficient air guidance past the motor and then towards the grinding tool is achieved.
- According to a particularly advantageous refinement, the blower is arranged between the drive motor and the grinding tool, wherein the air duct between the drive motor and the jacket is an air intake duct while the duct between the grinding tool and the jacket is an exhaust air duct. This arrangement of the blower results in an optimized air guidance as the air flow takes place partly on the suction side of the blower and partly on the discharge side of the blower.
- An optimum design of the blower is achieved if it has an impeller that is provided with a cover with a central intake opening and is coupled to the drive shaft in a co-rotational manner. When the air flows from the intake duct between the jacket and the drive motor to the central opening, the air flows through the gap between the housing of the drive motor and the cover, with the result that the drive motor is also cooled at its front end. In other words, the air intake duct is extended, between the cover and the drive motor, towards the intake opening.
- An optimized air flow on the discharge side of the blower is obtained if the cover has, at its outer edge, a deflecting portion leading to the exhaust air duct. This ensures a loss-free air flow into the exhaust air duct, which in turn results in an optimized cooling of the grinding tool.
- In practical application, the grinding apparatus has, in the vast majority of cases, a servo-motor arranged above the drive motor for the axial displacement of the drive shaft, which enables the grinding tool to be fed towards the rail and readjusted in the event of corresponding wear. In this regard, it is advantageous if the blower is fastened to the drive shaft in such a way that it is not displaceable axially in relation to the drive shaft. In other words, the blower is moved together with the grinding tool, causing the disk-shaped gap between the drive motor and the blower to be increased.
- Further advantages, details and features of the invention will emerge from the ensuing description of an exemplary embodiment, taken in conjunction with the drawing, in which
-
FIG. 1 shows a side view of a manually guided rail grinding machine, and -
FIG. 2 shows a vertical longitudinal section through the grinding apparatus of the grinding machine as shown inFIG. 1 . - The grinding machine 1 shown in
FIG. 1 for grinding in each case onerail 2 of a track has a machine frame 3, which is guided on therail 2 viaguide rolls 4. By means of a cross-beam not shown, the frame 3 is supported on the other rail (not shown) of the track as is common practice in practical application and known from DE 20 2010 007 264 U1. The machine frame 3 is provided withhandles 5 allowing the grinding machine 1 to be arranged on and removed from the rail. In the machine frame 3, a grinding unit 6 is mounted such as to be pivotable about apivot axis 7 parallel to therail 2. This grinding unit 6 has amounting bracket 8, which is mounted, at its ends, inpivot bearings 9 disposed on the machine frame 3, thepivot bearings 9 defining thepivot axis 7 and being supported on therail 2 by means ofsensing rollers 10. The upwardly bent mountingbracket 8 carries agrinding apparatus 11 arranged approximately in the center thereof. Thisgrinding apparatus 11 has, at its center, an electricgrinding drive motor 12 and a servo-motor 13, which is also electric, the servo-motor being arranged above saidgrinding drive motor 12. Agrinding tool 14 configured as a cup grinding wheel is provided below thegrinding drive motor 12. Thedrive motor 12 and the servo-motor 13 are supplied with electrical energy from an energy supply module arranged on the mentioned cross-beam, for example an electric generator, driven by means of an Otto-cycle engine, with a downstream storage battery as is common practice in practical application and known from DE 20 2010 007 264 U1. Thegrinding apparatus 11 is supplied with energy via aline 15. Themounting bracket 8 with thegrinding apparatus 11 is pivoted manually by means of apivot spindle drive 16. - As can be seen from
FIG. 2 , thegrinding apparatus 11 has ahousing 17, which is firmly connected to themounting bracket 8. Thedrive motor 12 is arranged below themounting bracket 8. Thedrive motor 12 is a so-called external rotor motor thestator 18 of which is firmly connected to thehousing 17. Therotor 19, which is arranged in thehousing 17 radially outside thestator 18, is connected to thedrive shaft 20 for thegrinding tool 14 in a non-rotational manner while thedrive shaft 20, however, is displaceable in relation to therotor 19 in the direction of itslongitudinal center axis 21 forming the axis of rotation. With itsinner rotor sleeve 22 that accommodates thedrive shaft 20, therotor 19 is rotatable in thestator 18 by means ofroller bearings 23 but is mounted in such a way as to be non-displaceable in the direction of thelongitudinal center axis 21. Between thestator 18 and the radially outer sleeve-like rotor portion 24, thestator laminations 25 are arranged. - Above the
mounting bracket 8, the servo-motor 13 is arranged on thehousing 17, which is capable of driving, by means of its servo-motor shaft 26, a threaded spindle 27 firmly connected thereto of a spindle nut drive 28. The threaded spindle 27 is arranged in aspindle nut 29, which moves thedrive shaft 20 in the direction of theaxis 21 when the servo-motor shaft 26 and, therefore, the threaded spindle 27, are being rotated, causing thegrinding tool 14 to be shifted in the direction of theaxis 21 as well. - On its lower side, the
drive motor 12 is closed by means of acover plate 30, which is firmly connected to thehousing 17. - Between the
drive motor 12 and thegrinding tool 14 firmly connected to thedrive shaft 20, ablower 31 is arranged, which is non-rotationally and non-displaceably connected to thedrive shaft 20 and is shifted together with thedrive shaft 20 in the direction of thelongitudinal center axis 21 when thedrive shaft 20 is being displaced. In other words, the distance between theblower 31 and thegrinding tool 14 is unchangeable whereas the distance between theblower 31 and thedrive motor 12 changes in the event of said axial displacements explained above. - The
blower 31 has animpeller 32, which has radially extending blades 33. In the direction of thedrive motor 12, the blades 33 are covered by acover 34, which has a largecentral opening 35. Between thecover 34 fastened to the blades 33 and thecover plate 30 of thedrive motor 12, anair gap 36 is formed, which changes its axial width when thegrinding tool 14 is being shifted as explained above. Thecover 34 is bent downwardly in its outer area such that a downwardly directed deflectingportion 37 is formed that guides the air towards theouter circumference 38 of thegrinding tool 14. - The
drive motor 12, theblower 31 and thegrinding tool 14 are surrounded by a substantiallycylindrical jacket 39, which defines anair intake duct 40 between thejacket 39 and the region of thehousing 17 that is associated to thedrive motor 12. This is adjoined by theair gap 36 so the aspirated air flows around the outer circumference and the lower side of thedrive motor 12 in such a way that a corresponding cooling effect is obtained. The air is aspirated centrally through theopening 35 of theblower 31 and accelerated radially outwardly by means of theimpeller 32 and discharged again in the direction of therail 2 through anexhaust air duct 41 between thegrinding tool 14 and thejacket 39. The grinding tool is cooled in this manner. Also, grinding chips disposed on therail 2 are blown away so the grinding head is cleaned. The air flow as a whole is designated byreference numeral 42. Thejacket 39 is provided with lateralprotective plates 43 serving as a protection against free-flowing chips.
Claims (8)
1-7. (canceled)
8. A rail grinding machine for grinding rails of a track, the grinding machine comprising:
a machine frame with guide rolls for supporting said machine frame on a rail and for enabling the rail grinding machine to be manually displaced on the rail of a track in a longitudinal direction;
a grinding apparatus pivotally mounted on said machine frame about a pivoting axis running in the longitudinal direction;
said grinding apparatus having a grinding drive motor with a drive shaft for a grinding tool to be arranged below said drive motor, wherein said grinding tool is drivable for rotation; and
a blower arranged above the grinding tool and disposed to move air downwardly past said drive motor and said grinding tool.
9. The grinding machine according to claim 8 , further comprising a jacket disposed to surround said drive motor and said grinding tool at least partly, air ducts formed between said jacket and said drive motor on one hand and said grinding tool on the other hand, said air ducts communicating with said blower.
10. The grinding machine according to claim 9 , wherein:
said blower is arranged between said drive motor and said grinding tool; and
said air duct between said drive motor and said jacket is an air intake duct and said duct between said grinding tool and said jacket is an exhaust air duct.
11. The grinding machine according to claim 9 , wherein said blower has an impeller, which is provided with a cover formed with a central intake opening, said impeller being coupled to said drive shaft for co-rotation therewith.
12. The grinding machine according to claim 11 , wherein said air intake duct is extended towards said intake opening radially in a direction of said drive shaft between said cover and said drive motor.
13. The grinding machine according to claim 12 , wherein said cover has a deflecting portion at an outer edge thereof, said deflecting portion leading to said exhaust air duct.
14. The grinding machine according to claim 9 , wherein:
said grinding apparatus has a servo-motor arranged above said drive motor for an axial displacement of said drive shaft; and
said blower is fastened to said drive shaft so as not to be displaceable axially relative to said drive shaft.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202017103078.4U DE202017103078U1 (en) | 2017-05-22 | 2017-05-22 | Manually slidable rail grinder on rails of a track |
DE202017103078 | 2017-05-22 | ||
PCT/EP2018/063186 WO2018215363A1 (en) | 2017-05-22 | 2018-05-18 | Rail-grinding machine which can be displaced manually on the rails of a track |
Publications (1)
Publication Number | Publication Date |
---|---|
US20200189062A1 true US20200189062A1 (en) | 2020-06-18 |
Family
ID=59295836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/615,939 Abandoned US20200189062A1 (en) | 2017-05-22 | 2018-05-18 | Rail grinding machine displaceable manually on the rails of a track |
Country Status (10)
Country | Link |
---|---|
US (1) | US20200189062A1 (en) |
EP (1) | EP3426843B1 (en) |
JP (1) | JP2020521075A (en) |
CN (1) | CN110651084B (en) |
AU (1) | AU2018274558A1 (en) |
DE (1) | DE202017103078U1 (en) |
DK (1) | DK3426843T3 (en) |
EA (1) | EA201992481A1 (en) |
PL (1) | PL3426843T3 (en) |
WO (1) | WO2018215363A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202018104152U1 (en) * | 2018-07-19 | 2019-10-23 | Robel Bahnbaumaschinen Gmbh | Rail grinding machine for grinding rails of a track |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4178724A (en) * | 1978-03-23 | 1979-12-18 | Harsco Corporation | Rail grinding system |
US4583327A (en) * | 1983-11-25 | 1986-04-22 | Jackson Jordan, Inc. | Rail grinding car |
US4829723A (en) * | 1987-10-16 | 1989-05-16 | Loram Maintenance Of Way, Inc. | Rail grinding machine |
US4864776A (en) * | 1987-08-21 | 1989-09-12 | Winders, Barlow And Morrison Pty. Ltd. | Rail grinding apparatus |
US20070066193A1 (en) * | 2005-09-16 | 2007-03-22 | Speno International S.A. | Reprofiling device for the rails of railroads that captures waste |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1722100U (en) * | 1956-02-02 | 1956-05-09 | Eisen & Stahlind Ag | RAIL AND RAIL JOINT GRINDING MACHINE. |
CH671595A5 (en) * | 1987-05-14 | 1989-09-15 | Speno International | Railway line rectifier - has filtering system with fan to remove and separate abrasive and metal particles |
US5111624A (en) * | 1990-09-10 | 1992-05-12 | Loram Maintenance Of Way, Inc. | Method and apparatus for limiting the dispersion of rail grinding machine spark and dust residue |
DE69605551T2 (en) * | 1996-10-11 | 2000-07-13 | Scheuchzer Sa | Process for welding at least one rail track and machine for using this process |
FI129765B (en) * | 2007-03-21 | 2022-08-15 | Oy Kwh Mirka Ab | Compact electric grinding machine |
DE202010007264U1 (en) * | 2010-05-26 | 2010-08-26 | Robel Bahnbaumaschinen Gmbh | Grinding machine for grinding rails of a track |
EP2671675A1 (en) * | 2012-06-07 | 2013-12-11 | Molemab France | System for cooling a tool for removing material mounted on a rotary device |
CN202945514U (en) * | 2012-12-10 | 2013-05-22 | 北京二七轨道交通装备有限责任公司 | System for grinding rails and collecting dust and grinding wagon |
CN102966014B (en) * | 2012-12-10 | 2014-12-03 | 北京二七轨道交通装备有限责任公司 | Rail grinding dust-precipitating system and rail grinding wagon |
CN204608531U (en) * | 2014-12-26 | 2015-09-02 | 北京二七轨道交通装备有限责任公司 | Rail grinding machine for grinding rails and rail milling car |
CN105178122B (en) * | 2015-10-12 | 2017-10-10 | 北京东顺博望石油设备有限公司 | A kind of abrasive belt track grinding apparatus |
-
2017
- 2017-05-22 DE DE202017103078.4U patent/DE202017103078U1/en not_active Expired - Lifetime
-
2018
- 2018-05-18 DK DK18726140.9T patent/DK3426843T3/en active
- 2018-05-18 PL PL18726140T patent/PL3426843T3/en unknown
- 2018-05-18 WO PCT/EP2018/063186 patent/WO2018215363A1/en active Application Filing
- 2018-05-18 EA EA201992481A patent/EA201992481A1/en unknown
- 2018-05-18 US US16/615,939 patent/US20200189062A1/en not_active Abandoned
- 2018-05-18 AU AU2018274558A patent/AU2018274558A1/en not_active Abandoned
- 2018-05-18 CN CN201880033812.2A patent/CN110651084B/en active Active
- 2018-05-18 JP JP2019564476A patent/JP2020521075A/en active Pending
- 2018-05-18 EP EP18726140.9A patent/EP3426843B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4178724A (en) * | 1978-03-23 | 1979-12-18 | Harsco Corporation | Rail grinding system |
US4583327A (en) * | 1983-11-25 | 1986-04-22 | Jackson Jordan, Inc. | Rail grinding car |
US4864776A (en) * | 1987-08-21 | 1989-09-12 | Winders, Barlow And Morrison Pty. Ltd. | Rail grinding apparatus |
US4829723A (en) * | 1987-10-16 | 1989-05-16 | Loram Maintenance Of Way, Inc. | Rail grinding machine |
US20070066193A1 (en) * | 2005-09-16 | 2007-03-22 | Speno International S.A. | Reprofiling device for the rails of railroads that captures waste |
Also Published As
Publication number | Publication date |
---|---|
CN110651084B (en) | 2022-04-05 |
DK3426843T3 (en) | 2019-12-16 |
AU2018274558A1 (en) | 2019-12-12 |
CN110651084A (en) | 2020-01-03 |
DE202017103078U1 (en) | 2017-06-21 |
JP2020521075A (en) | 2020-07-16 |
WO2018215363A1 (en) | 2018-11-29 |
EP3426843A1 (en) | 2019-01-16 |
EA201992481A1 (en) | 2020-04-08 |
EP3426843B1 (en) | 2019-09-11 |
PL3426843T3 (en) | 2020-04-30 |
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