EP2644775A2 - Fraiseuse automotrice, utilisation d'une colonne élévatrice d'une fraiseuse et procédé d'augmentation de l'efficacité de travail d'une fraiseuse - Google Patents

Fraiseuse automotrice, utilisation d'une colonne élévatrice d'une fraiseuse et procédé d'augmentation de l'efficacité de travail d'une fraiseuse Download PDF

Info

Publication number: EP2644775A2
Authority: EP; European Patent Office
Prior art keywords: milling machine; work roll; lifting; lifting columns; self
Prior art date: 2012-03-28
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

Application number

EP20130159176

Other languages

German (de)

English (en)

Other versions

EP2644775B1 (fr

EP2644775A3 (fr

Inventor

Hanjo Held

Markus Schäfer

Christian Berning

Cyrus Barimani

Günter HÄHN

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Wirtgen GmbH

Original Assignee

Wirtgen GmbH

Priority date (The priority date 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 date listed.)

2012-03-28

Filing date

2013-03-14

Publication date

2013-10-02

2013-03-14 Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH

2013-10-02 Publication of EP2644775A2 publication Critical patent/EP2644775A2/fr

2015-06-24 Publication of EP2644775A3 publication Critical patent/EP2644775A3/fr

2016-10-26 Application granted granted Critical

2016-10-26 Publication of EP2644775B1 publication Critical patent/EP2644775B1/fr

Status Active legal-status Critical Current

2033-03-14 Anticipated expiration legal-status Critical

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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
- E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
- E01C23/122—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
- E01C23/127—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
- 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 self-propelled milling machine, in particular a road milling machine, a stabilizer, a recycler or a surface miner for processing road or ground surfaces according to the preamble of claim 1, and the use of lifting columns of a milling machine according to the preamble of claim 10, and a Method for increasing the working efficiency of a milling machine according to the preamble of claim 12.
a self-propelled road milling machine with the features of the preamble of claim 1 is for example from the EP 0 916 004 known.
the road milling machine described therein has a chassis with front and rear suspension axles in the direction of travel, each chassis axle having two drives which may consist of wheel drives and / or crawler tracks.
a suspension axle preferably the front, has only a single drive for smaller machines.
the chassis carries the machine frame via lifting columns on at least two drives of a chassis axle.
the EP 0 916 004 has at least the rear suspension axle lifting columns, and at least one of the drives the rear suspension axle is pivotable in a retracted position for edge-near milling.
the work roll in the direction of travel between stored on the rear drives.
the work roll may be between the front and rear drives, or even behind the rear drives in the direction of travel.
the milling depth of the work roll can be changed using the lifting columns. It is understood that the work roll can also be adjusted in height independently of the machine frame.
the control station of the milling machine is located above the rear suspension axle.
the control station can also be provided at another location on the machine frame, for example in the direction of travel between the suspension axles or behind the rear suspension axle.
the milling machine can also be designed without a control station, wherein the milling machine is remotely operated by a driver.
the invention is therefore based on the object to increase the work efficiency in a milling machine mentioned above, and to provide a method for increasing the working efficiency of a milling machine.
the invention provides in an advantageous manner that the work roll is adjustable in a position for driving with raised work roll and the lifting columns are coupled in the set position with a spring means.
the invention makes it possible in an advantageous manner to couple the lifting columns for driving operation with raised work roll with a spring device, so that between the machine frame and the lifting columns can act a spring device.
the lifting columns previously used only for height adjustment of the machine frame are structurally modified in such a way that a suspension is made possible instead of the height adjustment.
the structural change to the lifting columns is inexpensive and space-saving executable, wherein the spring device can also be integrated into the lifting column.
the invention provides a new functionality of the lifting columns without increased space requirements and without high design or equipment expense.
the lifting columns allow suspension in such a way that the milling machine can be moved in pure driving without intervention of the work roll at much higher speeds without the machine and the driver is subjected to increased loads.
the milling machine can be moved with far more than the previously maximum possible travel speed, so that when moving the milling machine to another site a considerable time savings arises that significantly increases the working efficiency of the milling machine.
the spring device may be a mechanical or a hydraulic spring device.
a mechanical spring device this is arranged between the drive and the machine frame in series with the lifting column, wherein the spring device is mechanically blocked in the milling operation of the work roll.
a hydraulic spring device this is hydraulically locked in the milling operation of the work roll.
the lifting column comprises a hydraulic piston-cylinder unit containing a piston movable in a cylinder which divides the cylinder of the piston-cylinder unit into an upper cylinder chamber and a lower cylinder chamber.
the cylinder is rigidly connected to the machine frame and the piston is rigidly connected to the drive.
the cylinder chambers can be coupled via at least one controllable valve with the hydraulic spring device.
Such a hydraulic circuit makes it possible to use the lifting columns for cushioning the machine frame.
the spring device preferably has a diaphragm accumulator.
a diaphragm accumulator is connected for spring operation with the cylinder chambers of the piston-cylinder unit of the lifting column.
the at least one controllable valve is closed during operation and is opened during driving without use of the work roll after reaching a predetermined lifting height of the lifting column.
the coupling with the spring device when reaching a preset lifting height of the lifting columns can also be done automatically.
the rear lifting columns in the direction of travel can be coupled to the at least one spring device.
the lifting columns can each be coupled with one or more spring devices. Alternatively, all lifting columns can be coupled with at least one common spring device.
the lifting columns known in self-propelled milling machines can be used for cushioning shocks that occur when moving the milling machine while driving, when the work roll is disengaged by the lifting column is coupled with a spring device.
the piston-cylinder unit used for height adjustment can be used for suspension by the cylinder chambers are coupled alternatively via at least one controllable valve with a hydraulic spring device.
Fig. 1 shown self-propelled milling machine is a road milling machine 1 with a machine frame 3, which is supported by a chassis 2 with front in the direction of travel 18 and rear suspension axles 4.6 with a total of at least three drives 8.
the drives 8 may be wheel drives 14 or track drives, wheel drives 14 and track drives may also be present together.
the front drives 8 are steerable.
the rear drives 8 may also be steerable.
a work roll 12 is carried by the machine frame 3, wherein the milling depth can be adjusted by means of lifting columns 10 with rigid storage of the work roll 12 on the machine frame 3. If the work roll 12 itself mounted vertically adjustable on the machine frame 3, the lifting columns are used only for adjusting the distance of the machine frame 3 from the road or ground surface 5. In the raised position of the work roll 12, this has a distance from the road or ground surface 5, which also allows a deflection of the chassis 2, without the work roll 12 is damaged.
Fig. 1 shows the position of the drive 8 in normal operation.
the drive 8 can be pivoted for the edge-flush milling in a position located within the contours of the machine frame 3 position, as is apparent from Fig. 2 is removable. In this case, can be milled with close to an obstacle with the front side of the work roll 12.
the pivotable drive 8 can be steered, in particular in the pivoted position.
the work roll 12 can also be arranged between the suspension axles 4, 6, or even in the direction of travel 18 behind the rear suspension axle 6.
the lifting column 10 has two telescopically adjustable tubes, wherein the outer tube 44 is fixed to the machine frame 3 and the inner tube 46 to the drive 8.
the inner tube 46 can slide almost free of play telescopically in the outer tube 44 and can be secured against rotation.
a piston-cylinder unit 20 is arranged, the cylinder 25 is connected to the outer tube 44 and the piston 26 is fixed to the drive 8.
a height adjustment of the machine frame 3 can be made by displacing the outer tube 44 connected to the machine frame 3 relative to the inner tube 46 and the drive 8.
Fig. 4 shows the hydraulic circuit diagram for coupling the piston-cylinder unit 20 to a spring device 14 and a spring / damping device 14th
the milling machine has at its control panel a height adjustment valve 32, with which the Lifting column 10 can be adjusted in height.
the height adjustment valve 32 is a 4/3-way valve, so that depending on the switching position of the height adjustment valve 32, the upper cylinder chamber 22 is pressurized and the lower cylinder chamber 24 can be relieved of pressure, or vice versa.
the lifting column 10 is raised, lowered in the second case.
the middle position of the height adjustment valve 32 the lines leading to the cylinder chambers 22 and 24 are blocked, so that the lifting column 10 is locked in position.
the milling operation takes place. It is essential that the chassis is absolutely rigid during the milling operation and does not allow suspension. All lifting columns 10 are therefore absolutely locked, so that the milling depth can be maintained to the millimeter, despite the heavy weight of the milling machine.
a driving operation with raised work roll 12 are introduced after the work roll 12 has been brought by its own height adjustment or by the lifting columns 10 in a raised position, the cylinder chambers 22,24 can be connected to a diaphragm accumulator 34, when the simultaneously switched valves 30,36 are open. Due to the compressive elasticity of the diaphragm accumulator 34, the pressure in the cylinder chambers 22, 24 can now fluctuate, so that a suspension is made possible.
the diaphragm accumulator 34 contains a sufficient operating pressure in order, on the one hand, to bear the machine weight and, on the other hand, to allow a certain oscillation of the piston 26 in the piston-cylinder unit 20.
the leading to the diaphragm accumulator 34 line is blocked with a check valve 35 in the return direction, which is bridged by a throttle 38, so that the pressure reduction in the diaphragm accumulator 34 is slowed down via the throttle 38. Due to this, the spring device 14 also has damping properties, so that a spring / damping device is formed.
the second switching valve 36 also has a throttle 48, which prevents a jerky pressure equalization between the cylinder chambers 22 and 24 in the open position of the switching valve 36.
the switching valve 36 is connected between the leading to the cylinder chambers 22 and 24 hydraulic pressure lines, thus bridging the of the Height adjustment valve 32 to the piston-cylinder unit 20 leading hydraulic pressure lines.
the hydraulic pressure line leading to the diaphragm accumulator 34 branches off from one of the hydraulic pressure lines leading to the cylinder chambers 22, 24.
the switching valves 30,36 simultaneously release the pressure flow in the open position and block the flow in both directions in the closed position. With the help of the simultaneously switched double valve 30,36, the function of the lifting columns 10 can be changed from a height adjustment to a suspension and vice versa.
the simultaneously switched double valve 30,36 is transferred to its closed position, whereupon the lifting columns 10 can be operated as usual with the height adjustment valve 32.
the double valve 30,36, the check valve 35 and the throttle 38 may form a structural unit. This can, as of Fig. 1 can be arranged within the outer tube 44 of the lifting column 10.
Fig. 4 shows a further embodiment, which is only to the effect of the embodiment of the Fig. 3 differentiates that the throttles are now variably adjustable, as based on the adjustable throttles 40,42 in Fig. 4 is apparent.
the adjustable throttles 40,42 make it possible to adapt the damping properties to the local conditions of the road or ground surfaces or to the desired ride comfort.
the coupling of the lifting columns 10 with a spring device 14 or a spring / damping device makes it possible to convert the lifting columns 10 themselves to a suspension, so that due to the now resulting spring and damping properties higher travel speeds of, for example, more than 12 km / h, preferably more than 15 km / h can be achieved.
the relocation of the milling machine to another site can be accomplished in a significantly shorter time, making the overall work efficiency of the milling machine can be significantly improved.

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Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Architecture (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Mechanical Engineering (AREA)
Road Repair (AREA)
Vehicle Body Suspensions (AREA)

EP13159176.0A 2012-03-28 2013-03-14 Fraiseuse automotrice, utilisation d'une colonne élévatrice d'une fraiseuse et procédé d'augmentation de l'efficacité de travail d'une fraiseuse Active EP2644775B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102012205005.1A DE102012205005B4 (de)	2012-03-28	2012-03-28	Selbstfahrende Fräsmaschine, Verwendung einer Hubsäule einer Fräsmaschine, sowie Verfahren zum Erhöhen der Arbeitseffektivität einer Fräsmaschine

Publications (3)

Publication Number	Publication Date
EP2644775A2 true EP2644775A2 (fr)	2013-10-02
EP2644775A3 EP2644775A3 (fr)	2015-06-24
EP2644775B1 EP2644775B1 (fr)	2016-10-26

Family

ID=47845862

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP13159176.0A Active EP2644775B1 (fr)	2012-03-28	2013-03-14	Fraiseuse automotrice, utilisation d'une colonne élévatrice d'une fraiseuse et procédé d'augmentation de l'efficacité de travail d'une fraiseuse

Country Status (4)

Country	Link
US (1)	US9085857B2 (fr)
EP (1)	EP2644775B1 (fr)
CN (2)	CN103362059B (fr)
DE (1)	DE102012205005B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103558852A (zh) *	2013-10-31	2014-02-05	北方重工集团有限公司	一种用于硬岩巷道采矿机自动行走和纠偏的电控系统
EP3587668A1 (fr) *	2018-06-22	2020-01-01	Wirtgen GmbH	Engin de construction automoteur et procédé de traitement des revêtements de sol
EP3767033A1 (fr) *	2019-07-18	2021-01-20	Wirtgen GmbH	Engin de construction automoteur et procédé de traitement des revêtements de sol

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DE102012205005B4 (de) *	2012-03-28	2015-04-02	Wirtgen Gmbh	Selbstfahrende Fräsmaschine, Verwendung einer Hubsäule einer Fräsmaschine, sowie Verfahren zum Erhöhen der Arbeitseffektivität einer Fräsmaschine
CN103966940B (zh) *	2014-05-07	2015-12-30	中联重科股份有限公司	一种铣刨机及其立柱升降控制装置、系统及方法
CN105369723B (zh) *	2014-08-20	2017-05-24	中联重科股份有限公司	铣刨机的控制方法、控制设备、控制系统以及铣刨机
DE102015209740A1 (de) *	2014-12-30	2016-06-30	Wirtgen Gmbh	Selbstfahrende Strassenfräsmaschine zum Bearbeiten von Strassenoberflächen, sowie Verfahren zum Bearbeiten von Strassenoberflächen mit einer Strassenfräsmaschine
DE102015003153B4 (de)	2015-03-13	2019-03-28	Wirtgen Gmbh	Selbstfahrende Baumaschine
DE102016225189A1 (de)	2016-12-15	2018-06-21	Wirtgen Gmbh	Baumaschine für die Bearbeitung von einem Bodenbelag
US20190136468A1 (en) *	2017-11-07	2019-05-09	Roadtec, Inc.	System for disabling milling drum of milling machine
DE102019127745A1 (de) *	2019-10-15	2021-04-15	Wirtgen Gmbh	Selbstfahrende Baumaschine
US11255059B2 (en) *	2020-01-28	2022-02-22	Caterpillar Paving Products Inc.	Milling machine having a non-contact leg-height measurement system
US11015305B1 (en) *	2020-01-28	2021-05-25	Caterpillar Paving Products Inc.	Milling machine having a hydraulic dampening system
US11692563B2 (en) *	2020-01-28	2023-07-04	Caterpillar Paving Products Inc.	Milling machine having a valve current based height measurement system
US11585052B2 (en) *	2020-03-30	2023-02-21	Caterpillar Paving Products Inc.	Milling machine having a hydraulic dampening system
CN112459513A (zh) *	2020-10-22	2021-03-09	齐游荣	一种节能环保的用于室内混凝土破碎的装置
US11932327B2 (en)	2021-02-16	2024-03-19	Caterpillar Paving Products Inc.	Four-legged construction machine having slope stability system with relief valves
US11795664B2 (en)	2021-02-16	2023-10-24	Caterpillar Paving Products, Inc.	Four-legged construction machine having slope stability system with locking valves
US11787255B2 (en) *	2021-09-20	2023-10-17	Caterpillar Inc.	Suspension system with individual ride height and dampening control
CN116240787B (zh) *	2023-04-03	2025-05-30	西安公路研究院有限公司	一种公路路面养护工程用铣刨机

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BRPI0713752B1 (pt) *	2006-12-22	2018-03-13	Wirtgen Gmbh	Fresadora para estrada e método para posicionar a estrutura da máquina paralela ao terreno
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DE102012205005B4 (de) *	2012-03-28	2015-04-02	Wirtgen Gmbh	Selbstfahrende Fräsmaschine, Verwendung einer Hubsäule einer Fräsmaschine, sowie Verfahren zum Erhöhen der Arbeitseffektivität einer Fräsmaschine

2012
- 2012-03-28 DE DE102012205005.1A patent/DE102012205005B4/de not_active Expired - Fee Related
2013
- 2013-03-14 EP EP13159176.0A patent/EP2644775B1/fr active Active
- 2013-03-14 US US13/827,409 patent/US9085857B2/en active Active
- 2013-03-28 CN CN201310104865.8A patent/CN103362059B/zh active Active
- 2013-03-28 CN CN201320148227.1U patent/CN203487443U/zh not_active Expired - Lifetime

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103558852A (zh) *	2013-10-31	2014-02-05	北方重工集团有限公司	一种用于硬岩巷道采矿机自动行走和纠偏的电控系统
CN103558852B (zh) *	2013-10-31	2016-03-23	北方重工集团有限公司	一种用于硬岩巷道采矿机自动行走和纠偏的电控系统
EP3587668A1 (fr) *	2018-06-22	2020-01-01	Wirtgen GmbH	Engin de construction automoteur et procédé de traitement des revêtements de sol
US10968576B2 (en)	2018-06-22	2021-04-06	Wirtgen Gmbh	Self-propelled construction machine and method for working ground pavements
EP3767033A1 (fr) *	2019-07-18	2021-01-20	Wirtgen GmbH	Engin de construction automoteur et procédé de traitement des revêtements de sol
US11346065B2 (en)	2019-07-18	2022-05-31	Wirtgen Gmbh	Self-propelled construction machine and method for working ground pavements

Also Published As

Publication number	Publication date
CN103362059A (zh)	2013-10-23
CN103362059B (zh)	2016-08-03
US20130257136A1 (en)	2013-10-03
EP2644775B1 (fr)	2016-10-26
CN203487443U (zh)	2014-03-19
US9085857B2 (en)	2015-07-21
DE102012205005B4 (de)	2015-04-02
EP2644775A3 (fr)	2015-06-24
DE102012205005A1 (de)	2013-10-02

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