Classifications

• • 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
• • 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
  • 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 manually displaceable on the rails of a track in a longitudinal direction
• a grinding unit mounted pivotably about a longitudinally extending pivot axis on the machine frame, comprising - a grinding drive motor with a drive shaft for a below the grinding drive motor to be arranged from the
• Grinding drive motor has rotatably drivable grinding tool.
• Such rail grinders known, for example, from DE 20 2010 007 264 U1 can be used very flexibly and can be quickly transferred from one point to be processed to another, for example for grinding the weld beads on rail joints. Basically, even with such manually displaceable rail grinding machines the requirement that they provide the highest possible grinding performance with high grinding quality.
• the invention is therefore the object of developing a rail grinding machine of the generic type so that it provides improved grinding performance with improved grinding quality.
• This object is achieved in a rail grinding machine according to the preamble of claim 1, characterized in that above the grinding tool, a fan is arranged, which promotes air on the drive motor and the grinding tool over.
• the effects achieved in accordance with the invention are optimized by providing a jacket enveloping the drive motor and the grinding tool at least partially, between which and the drive motor on the one hand and the grinding tool, on the other hand, air channels are formed, which are connected to the fan are connected. This ensures that a targeted and thus highly efficient air flow on the one hand past the engine and then secured to the grinding tool.
• the fan is arranged between the drive motor and the grinding tool, wherein the air channel between the drive motor and the jacket has an airflow.
• Intake channel and the channel between the grinding tool and the jacket is an exhaust air duct.
• An optimal design of the blower is present when it has a non-rotatably coupled to the drive shaft fan wheel with a lid attached to this central intake opening.
• the grinding aggregate very often has a positioning motor arranged above the drive motor for the axial adjustment of the drive shaft, by means of which the feed of the grinding tool to the rail and the adjustment with corresponding wear is made possible. It is advantageous if the fan is fixed relative to the drive shaft axially immovable on this. The fan is thus moved together with the grinding tool, whereby the disc-shaped gap between the drive motor and the blower is increased.
• Fig. 1 is a manually guided rail grinding machine in
• Fig. 2 is a vertical longitudinal section through the working unit of
• the grinding machine 1 shown in FIG. 1 for grinding a respective rail 2 of a track has a machine frame 3, which is guided on the rail 2 via guide rollers 4.
• the frame 3 is supported on the other - not shown - rail of the track via a transverse arm, not shown, as is common practice in practice and known from DE 20 2010 007 264 Ul.
• handles 5 are attached, by means of which the grinding machine 1 on or ausgleisbar.
• a grinding unit 6 is pivotally mounted about a pivot axis 7 parallel to the rail 2.
• This grinding unit 6 has a support bracket 8 which is mounted at its ends in pivot bearings 9 which are mounted on the machine frame 3, which define the pivot axis 7 and the touch rollers 10 on the rail second rest.
• the upwardly bent support bracket 8 carries approximately centrally a grinding unit 1 1.
• This grinding unit 1 1 has in the middle an electric grinding drive motor 12 and above this also an electric adjusting motor 13. Below the grinding drive motor 12, a grinding tool 14 is provided in the form of a pot grinding wheel.
• the electrical power supply of the drive motor 12 and the servo motor 13 is carried out by a arranged on said cross arm energy supply module, for example, a powered by gasoline engine electric generator with downstream storage battery, as is common practice in practice and from DE 20 2010 007 264 Ul is known.
• the power supply of the grinding unit 1 1 via a line 15.
• the pivotal movement of the support bracket 8 with grinding unit 1 1 takes place manually via a pivot-spindle drive 16.
• the grinding unit 1 1 has - as Fig.
• stator sheet packets 25 are arranged between the stator 18 and the radially outer sleeve-like rotor portion 24, the stator sheet packets 25 are arranged.
• the adjusting motor 13 is mounted on the housing 17, which can drive via its adjusting motor shaft 26 a fixedly connected to him threaded spindle 27 of a spindle nut drive 28.
• the threaded spindle 27 is arranged in a spindle nut 29, which upon rotation of the adjusting motor shaft 26 and thus the threaded spindle 27 shifts the drive shaft 20 in the direction of the axis 21, whereby the grinding tool 14 is displaced in the direction of the axis 21.
• the drive motor 12 is closed at its bottom by means of a cover plate 30 which is fixedly connected to the housing 17.
• a fan 31 is arranged, which is non-rotatably and immovably connected to the drive shaft 20 and upon adjustments of the drive shaft 20 in the direction of the means Longitudinal axis 21 is moved with.
• the distance of the blower 31 to the grinding tool 14 is therefore unchangeable; In contrast, the distance of the blower 31 to the drive motor 12 changes in the described axial adjustments.
• the fan 31 has a fan wheel 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 in the described displacements of the grinding tool 14 its axial width.
• the lid 34 is bent downwards in its outer region, so that a downwardly directed deflection section 37 is formed, which directs the air to the outer periphery 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 has an air intake channel 40 between the jacket 39 and the region of the housing. limited housing 17 which is associated with the drive motor 12. This is followed by the air gap 36, so that a total of the sucked air flows around the drive motor 12 at its outer periphery and on its underside with appropriate cooling.
• the air is drawn centrally through the opening 35 of the blower 31 and accelerated radially outward by the fan wheel 32 and in turn blown through an exhaust duct 41 between the grinding tool 14 and the shell 39 in the direction of the rail 2. This is done cooling the grinding tool.
• the existing on the rail 2 grinding chips are blown away, so that a cleaning of the rail head takes place.
• the air flow is indicated overall by the reference numeral 42.
• On the jacket 39 side fenders 43 are mounted as protection against free-flying 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)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=59295836

Family Applications (1)

Country Status (10)

Families Citing this family (1)

Citations (6)

Family Cites Families (10)

• 2017
  • 2017-05-22 DE DE202017103078.4U patent/DE202017103078U1/de not_active Expired - Lifetime
• 2018
  • 2018-05-18 AU AU2018274558A patent/AU2018274558A1/en not_active Abandoned
  • 2018-05-18 JP JP2019564476A patent/JP2020521075A/ja active Pending
  • 2018-05-18 CN CN201880033812.2A patent/CN110651084B/zh active Active
  • 2018-05-18 EP EP18726140.9A patent/EP3426843B1/de active Active
  • 2018-05-18 DK DK18726140.9T patent/DK3426843T3/da active
  • 2018-05-18 PL PL18726140T patent/PL3426843T3/pl unknown
  • 2018-05-18 US US16/615,939 patent/US20200189062A1/en not_active Abandoned
  • 2018-05-18 WO PCT/EP2018/063186 patent/WO2018215363A1/de active Application Filing
  • 2018-05-18 EA EA201992481A patent/EA201992481A1/ru unknown

Patent Citations (7)

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