EP0920555A1 - Device for milling ground surfaces, specially roadways - Google Patents
Device for milling ground surfaces, specially roadwaysInfo
- Publication number
- EP0920555A1 EP0920555A1 EP98928243A EP98928243A EP0920555A1 EP 0920555 A1 EP0920555 A1 EP 0920555A1 EP 98928243 A EP98928243 A EP 98928243A EP 98928243 A EP98928243 A EP 98928243A EP 0920555 A1 EP0920555 A1 EP 0920555A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor
- guide
- shoe
- milling drum
- side walls
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
Definitions
- the invention relates to a device for milling off floor surfaces, in particular roadways, according to the preamble of claim 1.
- Such devices are also referred to as front loader milling.
- a front loader milling machine is known for example from DE 39 03 482 AI.
- the known milling machines have a self-propelled chassis with a pair of front wheels and a pair of rear wheels.
- the chassis carries a machine frame in which a milling drum is mounted transversely to the direction of travel.
- the milling drum is generally surrounded by a housing in which the wall pointing in the direction of travel is designed as a cover plate with a passage opening for the milled material.
- the material processed by the milling drum is thrown off the milling drum onto a first conveyor belt, which transfers the processed material at the front end of the milling machine to a discharge belt, which is transported to a loading area of a truck can be tilted and swiveled sideways.
- the milling drum is equipped with chisel tools that form a conveying helix that transports the milled material to the through opening of the cover plate.
- the first conveyor belt in front of the milling drum can easily be damaged due to breaking open base plates, the repair of the conveyor belt requiring the removal of the conveyor. Removing and installing the conveyor is very laborious and time-consuming. Furthermore, several people are required to carry out this work.
- the invention is therefore based on the object of developing a device of the type mentioned at the outset that, on the one hand, the conveying device is better protected against damage and, on the other hand, it can be removed and installed with minimal expenditure of personnel and time.
- the invention advantageously provides that the end of the conveyor on the milling drum side is mounted in an easily detachable manner in a belt shoe attached to the machine frame in a height-adjustable manner, and that the belt shoe and the conveyor device have guide and coupling devices which are matched to one another.
- the approximately L-shaped band shoe in longitudinal section has an easily removable bearing for the rear end of the conveyor device and thus enables considerably shorter assembly and disassembly times for the conveyor device during repair work. tung.
- the conveyor is better protected against damage to the floor surface and to the milling drum, so that repair work is incurred to a lesser extent.
- the main advantages of the belt shoe are, on the one hand, the protection of the conveyor against damage and, on the other hand, the integrated guidance of the lower end of the conveyor.
- the belt shoe protects against damage to the conveyor belt of the conveyor from below as well as against damage to the conveyor belt due to the milling material, in that the belt shoe prevents frayed fragments from getting between the conveyor belt and the cover plate and damage the conveyor belt at the deflection point of the conveyor belt.
- the belt shoe consists of the vertical wall element with a passage opening, a grate that protrudes horizontally at the lower end of the wall element in the direction of travel, and parallel to the conveyor device that surrounds the grate and protrudes upwardly projecting side walls, between which the milling drum-side end of the conveyor device is pivoted. While the vertical wall element of the band shoe has the function of a vertical sign, the grate serves as a support, slide and hold-down element that rests on the floor surface. The side walls enable the rear end of the conveyor, on the milling drum side, to be guided and supported. The conveyor is pivotally mounted between the side walls of the band shoe.
- a passage opening in a vertical wall element of the band shoe interacts with the passage opening of the cover plate.
- the passage opening of the band shoe which is height-adjustable depending on the milling depth is always in the same position relative to the conveyor, so that optimal conditions exist for the removal of the milled material by the conveyor.
- the guiding and coupling device of the conveying device consist for example of laterally protruding guide bolts which allow the conveying device to be pivoted.
- the conveyor can run upwards at an angle of inclination to the horizontal, the guide devices of the band shoe on the side walls consisting of guide elements running at the angle of inclination of the conveyor device.
- the guide device of the belt shoe thus forms an extension of the guide devices of the machine frame for the conveyor device.
- the side walls at the end of the guide element on the milling drum side have receiving devices for the guide pins of the conveying device, in which the guide pins can be locked and which at the same time serve as an end stop for the conveying device.
- the strap shoe thus also serves as a guiding and locking device.
- the conveying device can be movably guided and supported in the belt shoe and can be prestressed against a stop on the belt shoe in the direction of the milling drum by means of a tension spring.
- the band shoe has a longitudinal bearing.
- the guide elements of the side walls consist of a angle of the conveyor running guide surface on the upper edge of the side walls.
- the guide bolts of the conveyor can slide on these guide surfaces in the stop and locking position on the belt shoe.
- the guide surfaces on the belt shoe support the rear end of the conveyor when it is pulled out of the machine frame until the conveyor is sufficiently supported by the machine frame.
- the guide elements on the side walls can consist of rails or grooves which are adapted to the guide bolts of the conveyor device and run at the angle of inclination of the conveyor device.
- the machine frame has a shaft running at the angle of inclination of the conveyor, in which the conveyor can be inserted into the end bearings on the belt shoe with the aid of a pair of rails and rollers.
- the rails are preferably arranged on the shaft of the machine frame and the guide rollers on the conveyor.
- the axially outer regions of the support rollers for the lower run of a conveyor belt of the conveyor device are particularly preferably simultaneously used as guide rollers for the conveyor device.
- the support rollers or the guide rollers in the end position of the conveyor device in the belt shoe no longer rest on the guide rails in the shaft of the machine frame.
- the strap shoe has a bow-shaped shield on its front, which protects the strap shoe from damage.
- Stiffening ribs running transversely to the side walls can be provided in the band shoe, which give the band shoe high stability and connect the grate bars of the grate to one another.
- the conveying device At its front end facing away from the milling drum, the conveying device has two further laterally projecting guide bolts which can be inserted into a longitudinal bearing in the shaft when the guide device is inserted into the band shoe.
- the conveyor is raised so that the guide rollers of the conveyor no longer rest on the guide rails in the shaft of the machine frame.
- the longitudinal bearing also permits limited movement of the conveyor, for example if the conveyor is held against a stop in the belt shoe with the aid of a tension spring or if the conveyor is adjusted as a result of a milling depth adjustment.
- FIG. 1 shows a device according to the invention for milling off floor surfaces
- 2a is a schematic representation of the position of the belt shoe within the machine frame relative to the milling drum, 2b a conveyor with conveyor belt that can be inserted into the band shoe,
- FIG. 5 is a plan view taken along line V-V in FIG. 4.
- the milling depth is set with the aid of the height adjustment of the rear wheels 5.
- Such machines are also referred to as front loader milling machines because they transport the milled material forward in the direction of travel onto transport vehicles.
- a first conveyor device 10 with a conveyor belt 12 is arranged, which is arranged at an angle of inclination in the machine frame 6 and transfers the milled material to a second conveyor device 14 with a further conveyor belt 15.
- the second transport device 14 can be adjusted in height by means of an adjustable inclination angle and can additionally be pivoted laterally by, for example, ⁇ 30 °, so that standing transport vehicles can be loaded next to the lane of the front loader milling machine.
- the milling drum 8 is generally surrounded by a housing in which the wall pointing in the direction of travel is designed as a cover plate 20 with a passage opening 22 for the milled material.
- the passage opening 22 always has the same position relative to the milling drum 8, even with different milling depth settings.
- the milling drum 8 is provided with helically arranged chisel tools, which are arranged such that the milled material is transported to the passage opening 22 in the cover plate 20.
- a band shoe 16 is fastened in a vertically adjustable manner in a vertical guide 26, 27.
- the vertical guide consists of a plate 27 which projects vertically downward from the machine frame 6 and which engages between a side change member 29 of the band shoe 16 and a vertical guide element 26 fastened to the wall element 21.
- a piston-cylinder unit 17 fastened to the machine frame 6 is provided for height adjustment of the band shoe 16. With the help of this piston-cylinder unit, the belt shoe can be raised in the vertical direction, for example to overcome obstacles. The strap shoe 16 cannot be pressed down, but can only be raised if necessary. When the milling depth is increased, the position of the band shoe 16 is automatically set by the ground contact.
- the belt shoe 16 receives the end of the conveyor device 10 on the milling drum side and into an end stop position in the belt shoe, where the lower end of the conveyor device is pivoted.
- the conveyor 10 remains movable along guide means 40 in the longitudinal direction of the conveyor 10. Due to its own weight, the conveyor 10 remains in the end position in the band shoe 16, but can also be fixed or held against the stop with a tension spring 62 under pre-tension.
- the band shoe 16 consists of a vertical, against the cover plate 20 wall element 21 with a passage opening 23, a horizontally protruding at the lower end of the wall element 21 in the direction of travel 28 grate, and parallel to the conveyor 10, upwardly projecting side walls 32, between which the milling drum-side end of the conveyor 10 is pivotally mounted.
- the passage opening 23 of the wall element 21 interacts with the passage opening 22 of the cover plate 20 in such a way that the height of the passage openings for the milled material always remains constant and independent of the milling depth, the passage opening 23 of the wall element 21 relative to the passage height which is constant according to the milling depth the conveyor ensures.
- the guiding and coupling device of the conveying device 10 preferably consists of guide bolts 36 protruding laterally and transversely to the direction of travel, which are adapted to the guiding devices 40, 44 of the band shoe 16.
- the band shoe 16 has a one that runs at the angle of inclination of the conveyor device 10 Guide surface 40, the length of which is dimensioned such that, for example when dismantling the conveyor, it is supported at least at the rear end until other support elements are engaged in a shaft 46 of the machine frame 6.
- a bolt receptacle 44 is arranged from an approximately semicircular recess, which serves as an end stop for the conveyor device 10.
- the bolt receptacle 44 can consist of a longer groove ' which is parallel to the guide surface 40 and is open on one side, so that the guide bolts 36 can be guided longitudinally without the conveying device being able to lift off in the horizontal direction. Since the guide bolts 36 have a round cross-sectional shape, the guide device 10 can be pivoted relative to the band shoe 16, for example when the milling depth is changed.
- the guide bolts 36 can be secured to the bolt receptacle 44 by pushing washers 47 onto the guide bolts 36 and being screwed to the strap shoe 16 with screws 45 above or below the bolt receptacle 44.
- rails or grooves for receiving the guide bolts 26 can be provided on the side walls 32 of the band shoe 16.
- the lower end of the conveyor 10 can be held in the end position of the bolt receptacle 44 by means of a tension spring 62, the conveyor 10 being longitudinally displaceable. slidably rests on the guide surfaces 40.
- the grate 28 of the band shoe 16 can serve as a hold-down or as a sliding shoe, depending on the design.
- Stiffening ribs 70 running transversely to the side walls 32 can be provided in the interior of the band shoe in order to increase the load capacity of the band shoe 16 and to hold the grate bars 71 of the grate.
- Rails 52 for guiding the conveyor device 10 during assembly and disassembly are arranged in the shaft 46 of the machine frame 6 and cooperate with guide rollers 54 of the conveyor device 10.
- the guide rollers 54 extending transversely to the conveyor device 10 also serve as support rollers for the lower run 58 of the conveyor belt 12 of the conveyor device 10.
- a total of three support rollers 54 are arranged on the underside of the conveyor device 10, the spacing of which is selected such that the conveyor device 10 at Is inserted into the shaft 46 of the machine frame at least until the rear guide bolts 36 rest on the guide surfaces 40 on the upper edges of the side walls 32.
- further laterally projecting guide bolts 38 are provided, which can be inserted in the shaft 46 in longitudinal bearings 48 arranged on both sides of the conveying device 10 when the guiding device 10 is inserted into the band shoe 16.
- the longitudinal bearings 48 allow the conveyor device to pivot as part of the height adjustment of the band shoe and thereby enable the length compensation. At the same time, they lift the conveying device 10 such that the support rollers 54 are lifted off the rails 52, so that they can rotate freely to support the lower run 58 of the conveyor belt 12.
- the conveyor 10 can be installed and removed by a single person using a crane due to the quick-release storage on the belt shoe 16 and the guides provided in the shaft 46. Since the guiding and coupling device on the band shoe 16 allows quick assembly or disassembly of the rear end of the conveyor device, repairs and maintenance work can be carried out in a very short time by only one person.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19726122 | 1997-06-20 | ||
DE19726122A DE19726122C2 (en) | 1997-06-20 | 1997-06-20 | Device for milling off floor coverings, in particular roadways |
PCT/EP1998/002755 WO1998059114A1 (en) | 1997-06-20 | 1998-05-12 | Device for milling ground surfaces, specially roadways |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0920555A1 true EP0920555A1 (en) | 1999-06-09 |
EP0920555B1 EP0920555B1 (en) | 2001-08-08 |
Family
ID=7833067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98928243A Expired - Lifetime EP0920555B1 (en) | 1997-06-20 | 1998-05-12 | Device for milling ground surfaces, specially roadways |
Country Status (5)
Country | Link |
---|---|
US (1) | US6296318B1 (en) |
EP (1) | EP0920555B1 (en) |
JP (1) | JP3698267B2 (en) |
DE (2) | DE19726122C2 (en) |
WO (1) | WO1998059114A1 (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19814053B4 (en) * | 1998-03-30 | 2007-07-26 | Wirtgen Gmbh | Apparatus for milling off floor surfaces, in particular roadways |
DE19925691B4 (en) * | 1999-06-04 | 2007-05-03 | Claas Selbstfahrende Erntemaschinen Gmbh | Agricultural harvester |
US6733086B1 (en) * | 2002-03-15 | 2004-05-11 | Ri Properties, Inc. | Vacuum system for milling machine |
DE10223819B4 (en) * | 2002-05-28 | 2005-05-12 | Wirtgen Gmbh | Milling machine for processing soil surfaces, and method for disposing of generated during milling dust and vapors on a milling machine |
DE10247579B3 (en) * | 2002-10-11 | 2004-04-15 | Wirtgen Gmbh | Scraper device for milling drums of a construction machine, as well as method |
NO320692B1 (en) * | 2002-12-30 | 2006-01-16 | Stiftelsen Det Norske Veritas | Process and system for testing computer-based control and monitoring systems in a vessel via a communication channel |
DE20313422U1 (en) * | 2003-08-29 | 2003-11-06 | Hartig Juergen | Wheeled vehicle, in particular forestry machinery |
US7131704B2 (en) * | 2004-09-23 | 2006-11-07 | Wirtgen America, Inc. | Shiftable conveyor for road milling machine |
DE102006062129B4 (en) | 2006-12-22 | 2010-08-05 | Wirtgen Gmbh | Road construction machine and method for measuring the cutting depth |
DE102009013709B4 (en) * | 2009-03-20 | 2011-04-28 | Wirtgen Gmbh | Mining machine, in particular surface miner, and method for removing and installing a transport device in a mining machine |
US9328468B2 (en) | 2012-03-08 | 2016-05-03 | Wirtgen Gmbh | Self-propelled road milling machine with adjustable width scraper blade |
US8915550B2 (en) * | 2012-03-08 | 2014-12-23 | Caterpillar Paving Products Inc. | Cold planar anti-stabbing mechanism |
DE102012203649A1 (en) | 2012-03-08 | 2013-09-12 | Wirtgen Gmbh | Self-propelled road milling machine for working on road surfaces, in particular large milling machine |
DE102012012395A1 (en) | 2012-06-25 | 2014-01-02 | Wirtgen Gmbh | road milling machine |
CN103144940B (en) * | 2013-03-13 | 2015-05-13 | 中联重科股份有限公司 | Method, equipment, system for controlling horizontal motion of unloading belt, and milling machine |
DE102014011878B4 (en) | 2014-08-11 | 2021-04-01 | Bomag Gmbh | Ground milling machine, method of dismantling and method of installing a milling device |
DE102015209740A1 (en) | 2014-12-30 | 2016-06-30 | Wirtgen Gmbh | Self-propelled road milling machine for working on road surfaces, as well as methods for working on road surfaces with a road milling machine |
DE102015014573B4 (en) | 2015-11-12 | 2020-03-19 | Wirtgen Gmbh | Self-propelled milling machine and method for working a traffic area |
US20160280468A1 (en) * | 2016-06-08 | 2016-09-29 | Caterpillar Paving Products Inc. | Conveyor system for cold planer |
CN106985111A (en) * | 2017-05-21 | 2017-07-28 | 无锡市翱宇特新科技发展有限公司 | A kind of boots head aids in handler |
DE202017003790U1 (en) * | 2017-07-18 | 2017-08-04 | Bomag Gmbh | floor milling machine |
US10309583B2 (en) * | 2017-09-20 | 2019-06-04 | Caterpillar Paving Products Inc. | Support mechanism for a construction machine |
DE102017012124B4 (en) | 2017-12-29 | 2023-08-03 | Bomag Gmbh | Method for controlling the elevation of a hold-down device of a ground milling machine and ground milling machine |
DE102018214133B3 (en) | 2018-08-21 | 2019-10-24 | Wirtgen Gmbh | Soil cultivation machine with quickly removable from the milling unit conveyor and method thereof |
JP7190738B2 (en) * | 2019-01-30 | 2022-12-16 | 範多機械株式会社 | Road milling machine and road milling vehicle |
US20210010269A1 (en) * | 2019-07-11 | 2021-01-14 | Columbia Construction Services, Inc. | Roof removal device |
DE102021119491A1 (en) | 2020-08-07 | 2022-02-10 | Bomag Gmbh | GROUND MILLING MACHINE, IN PARTICULAR ROAD MILLING MACHINE, WITH A CONVEYING DEVICE FOR TRANSPORTING MILLED MATERIAL AND METHOD FOR CONVEYING MILLED MATERIAL OF A FLOOR MILLING MACHINE |
DE102021118686A1 (en) | 2021-04-06 | 2022-10-06 | Bomag Gmbh | CROILING MACHINE AND METHOD FOR VACUUMING AND EXHAUSTING DUST-LOADED AIR FROM A CROILING MACHINE |
CN113089428B (en) * | 2021-04-12 | 2022-07-12 | 祥昇建工有限公司 | Roller napping construction device for cement pavement of country road |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4184581A (en) * | 1977-04-01 | 1980-01-22 | Canadian Mine Services Limited | Loading apparatus for mines |
DE3405473A1 (en) * | 1984-02-16 | 1985-10-03 | Wirtgen, Reinhard, 5461 Windhagen | COMPACT MILLING MACHINE FOR MILLING DAMAGED ROAD COVERINGS |
DE3733644A1 (en) * | 1987-10-05 | 1989-04-20 | Reinhard Wirtgen | Loading-belt arrangement for surface-roughening machines |
DE3831161C1 (en) * | 1988-09-13 | 1990-02-01 | Reinhard 5461 Windhagen De Wirtgen | Cover shield arrangement for surface milling machines |
DE3903482A1 (en) * | 1989-02-06 | 1990-08-23 | Wirtgen Gmbh | FRONT LOADER MILLING DEVICE FOR MILLING DAMAGED ROAD COVERINGS |
US5441361A (en) * | 1993-12-17 | 1995-08-15 | Astec Industries, Inc. | Field convertible apparatus for conducting either front load road planing operation or cold in-place recycling operation |
US5577808A (en) * | 1995-04-03 | 1996-11-26 | Trencor, Inc. | Quarry miner |
-
1997
- 1997-06-20 DE DE19726122A patent/DE19726122C2/en not_active Expired - Fee Related
-
1998
- 1998-05-12 WO PCT/EP1998/002755 patent/WO1998059114A1/en active IP Right Grant
- 1998-05-12 JP JP50363199A patent/JP3698267B2/en not_active Expired - Lifetime
- 1998-05-12 DE DE59801161T patent/DE59801161D1/en not_active Expired - Lifetime
- 1998-05-12 EP EP98928243A patent/EP0920555B1/en not_active Expired - Lifetime
-
1999
- 1999-02-18 US US09/252,366 patent/US6296318B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9859114A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP3698267B2 (en) | 2005-09-21 |
WO1998059114A1 (en) | 1998-12-30 |
US6296318B1 (en) | 2001-10-02 |
DE19726122C2 (en) | 2002-03-07 |
DE59801161D1 (en) | 2001-09-13 |
EP0920555B1 (en) | 2001-08-08 |
JP2000517018A (en) | 2000-12-19 |
DE19726122A1 (en) | 1999-01-28 |
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