EP0817889A1 - Double-belt soil-compacting device and steering system therefor - Google Patents
Double-belt soil-compacting device and steering system thereforInfo
- Publication number
- EP0817889A1 EP0817889A1 EP96906688A EP96906688A EP0817889A1 EP 0817889 A1 EP0817889 A1 EP 0817889A1 EP 96906688 A EP96906688 A EP 96906688A EP 96906688 A EP96906688 A EP 96906688A EP 0817889 A1 EP0817889 A1 EP 0817889A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bandage
- bandages
- pivoting
- steering
- angle
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/282—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit
Definitions
- the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 5.
- Soil compaction devices are used for compaction of soil layers e.g. B. used during road construction.
- soil layers e.g. B. used during road construction.
- the soil compaction device is moved back and forth on the layers to be compacted.
- soil compaction devices which can be steered by means of an articulated steering system shown in FIG. 1a or a schematic steering system shown in FIG. 1b.
- the representations in FIGS. 1 a and 1 b are greatly simplified and only schematically show the elements necessary for the steering process.
- a soil compacting device 1 with articulated steering (Figure la) has only a single pivot point 2, with which the two bandages 3a and 3b can be pivoted against each other for curve driving.
- the articulated soil compaction device 5 (FIG. 1b) has two pivot points 7 and 9 on the machine frame 11 for the two bandages 13a and 13b that are spaced apart from one another in the machine longitudinal axis direction by a distance a. Only the soil compaction device 5 with Schemellen ⁇ steering is discussed below.
- the front and rear brackets 13a and 13b are pivoted synchronously with respect to one another by the curve angle ⁇ during the steer steering.
- ⁇ the curve angle
- Road rollers with the above-mentioned steering are from DE-PS 884 207, US-A 3 947 142, the
- the roller operator circumvents this difficulty by not moving as close as possible to the boundary 15 as desired.
- the object of the invention is to allow the roller operator to compact soil layers close to a boundary and then easily move away from this laterally, even if he previously, for whatever reason, had been driving straight ahead along an obstacle, for whatever reason ⁇ ren is.
- the roller operator can now concentrate completely in the direction of travel.
- the transition from true-to-track driving to dog walking and back again is made automatically by a control unit.
- the other, second drum is no longer readjusted as in one of the known four-wheel steering systems in linear dependence, but non-linearly according to the conditions set out below.
- Four-wheel steering systems are described, for example, in DE-A 43 32 287, the
- dog walk was chosen for the sake of clarity. A dog can move his backside against his front legs while running and still deaus and a curve desired by him.
- Fig. La is a schematic representation of the bandage adjustment of a compaction device with articulated steering and
- FIG. 2 shows a compression device with schematic steering at a boundary of the layers to be compressed when cornering
- FIG. 3 shows a schematically illustrated compression device in dog walking in a straight line
- FIG. 7 shows a setting panel for setting some functions of the compacting device, in particular the dog walking, and
- FIG. 8 is a flowchart which shows the automatic transition to dog walking when driving straight ahead for an offset of the trailing bandage according to FIG. 6, wherein A " the angular increment for the adjustment of the trailing bandage 13b,” t the time increment for the step-by-step calculation of the adjustment, v the vehicle speed and Ad the resulting additional deflection of the trailing drum 13b according to the time increment * t.
- a cornering in crab, as shown in Figure 4, is then a superimposition of the above steering processes.
- FIGS. 5a and 5b In order to move laterally away from the boundary 15 without going into it, the roller vehicle 5, as shown schematically in FIGS. 5a and 5b, must be brought into the crab from the track-true method of travel, in which the rear bandage 13b in the direction of travel 23 is distanced from the boundary 15 by a distance d from the front 13a.
- FIG. 5a shows the starting position with the two bandages 13a and 13b adjacent to the boundary 15.
- FIG. 5b shows the final state in which the roller vehicle 5 can be moved in dog walking along the boundary 15 with a distance d between the rear bandage 13b.
- the bandages 13a and 13b are to be adjusted, whereby during the adjustment process the front 13a in the direction of travel 23 and the rear bandage 13b to the machine axis 17 differ from the state in FIGS. 3 and 5b different pivoting angles rS jj and rS v have.
- FIG. 6 shows schematically with solid lines the position of the two band axles 19a and 19b according to FIG. 5a ("track-true" initial state).
- the distance between the two drum axes 19a and 19b is a; more precisely, the distance between the two pivot points 7 and 9. If the rear drum axis 19b has now been adjusted by the pivoting angle o " h and the distance b has been traveled with this drum 13b, the front drum axis 19b must then be moved by the pivoting angle ⁇ " v be pivoted, otherwise the front bandage 13a would no longer travel along the boundary 15, but into it.
- the drum axis 19a of the front drum 13a can now be pivoted in accordance with the pivoting of the rear drum axis 19b.
- the incrementally small changes in the pivoting angle are now chosen to be so large as a function of the path b of the rear bandage 13b which has meanwhile been covered in each case that no cracking can occur due to the shear forces acting thereby on the soil to be compacted.
- rS h pivoting end angle
- end crab angle ⁇
- the crab is always set in such a way that the rear 13b bandage in the direction of travel 23 is spaced from the boundary 15.
- control deviation Due to the control size of the swivel system, there is always a so-called control deviation. This control deviation should advantageously be determined experimentally and then in accordance with the pivoting of the front bandage be overlaid. A remaining error can be compensated for by the roller driver by slight cornering.
- the steering process for adjusting the two bandages 13a and 13b is carried out according to the specifications by the roller guide via the control unit 31, which relates to measuring points 29a and 29b for the distance traveled or the travel speed and with measuring points 27b and 27b for the actual adjustment angle ⁇ working bandage 13a and 13b and actuators of the pivoting device 25a and 25b.
- the control unit 31 is a digital computer (processor).
- the condition to be observed for the steering is: The distance of the leading bandage 13a, see FIGS. 5a and 5b, to a straight obstacle (limitation) 15 (effective or to an imaginary, in particular straight line) must during the transition to the
- Dog walking remains constant, while the distance d of the trailing rear bandage 13b changes, as shown in the transition from FIG. 5a to FIG. 5b.
- This condition is met if, during the transition to dog walking, the angle between the boundary 15 in FIG. 6 and the axis 19a of the advancing bandage (direction of travel 23) in the example shown there at all times and regardless of the position or the distance traveled
- the path of the trailing band 19b is always 90 ° (with a straight line).
- the correction angle by which the leading bandage 19a must be adjusted continuously or incrementally is the above-mentioned angle Winkel " v , which can be determined from the trigonometric relationship for each position of the following bandage 13b.
- the pivoting devices 25a and 25b and the measuring devices 27a, 27b, 29a and 29b are connected to a control unit 31 which, in accordance with the above statements, corresponds to the specifications for the desired pivoting angle 6, a steering unit 33 acts on this control unit 31, with which, according to FIG. 4, it is also possible to corner in the crab, in the transition to the crab and in lane-true driving by "steering" by the roller operator .
- an input panel 35 is connected to the control unit 31.
- This input panel 35 has nine key fields 37a to 37i arranged in three rows.
- the top three key fields 37a to 37c are used to enter the vibration state of the bandages 13a and 13b.
- - II - represents.
- the keypads 37d to 37f arranged in the middle row serve to set the water sprinkling of the bandages 13a and 13b.
- the lowest keypads 37g to 37i are used to adjust the dog walking.
- a distance d analogous to FIG. 6 of the rear bandage 13b is generated on the left with the keypad 37g and from a boundary 15 with the keypad 37i on the right.
- With the middle keypad 37h the transition from dog walking to a true-to-lane driving style is made.
- the distance d of the dog walker is set by machine already at assembly. It can also be generated with appropriate (not shown) input elements a dog walking desired distance.
- the bandage axes 19a and 19b are preferably adjusted by the relevant pivoting angle ⁇ " h or fi v via hydraulic (not shown) piston-cylinder units, but other adjustment units, such as a superposition gear, can also be used , an electric drive, ... can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Massaging Devices (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH91195 | 1995-03-31 | ||
CH911/95 | 1995-03-31 | ||
PCT/CH1996/000112 WO1996030595A1 (en) | 1995-03-31 | 1996-03-29 | Double-belt soil-compacting device and steering system therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0817889A1 true EP0817889A1 (en) | 1998-01-14 |
EP0817889B1 EP0817889B1 (en) | 1999-03-03 |
Family
ID=4198047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96906688A Expired - Lifetime EP0817889B1 (en) | 1995-03-31 | 1996-03-29 | Double-belt soil-compacting device and steering system therefor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0817889B1 (en) |
AT (1) | ATE177166T1 (en) |
DE (2) | DE19536987A1 (en) |
WO (1) | WO1996030595A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ303105B6 (en) * | 2009-06-26 | 2012-04-04 | Ammann Czech Republic A.S. | Tandem-type compaction roller |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19804886A1 (en) * | 1998-02-09 | 1999-08-12 | Bomag Gmbh | Soil compaction device and method for controlling it |
DE19805038A1 (en) * | 1998-02-09 | 1999-08-12 | Bomag Gmbh | Soil compacting device and method for controlling its steering drive |
DE19804887A1 (en) | 1998-02-09 | 1999-08-12 | Bomag Gmbh | Soil compaction device and method for controlling the drive of a soil compaction device |
DE102005042932A1 (en) * | 2005-09-09 | 2007-03-22 | Man Roland Druckmaschinen Ag | Printing machine, in particular web-fed printing press |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE884207C (en) * | 1951-07-20 | 1953-07-23 | Alois Hamm | Road roller with steerable roller axles |
DE2345412C2 (en) * | 1973-09-08 | 1983-11-03 | Bomag-Menck GmbH, 5407 Boppard | Two-axle road roller |
US3868194A (en) * | 1974-02-06 | 1975-02-25 | Iowa Mfg Co | Expandable articulated tandem roller |
US3947142A (en) * | 1975-02-06 | 1976-03-30 | Raygo, Inc. | Articulated pavement compacting machine |
CA1287147C (en) * | 1985-10-24 | 1991-07-30 | Hiromu Fujimoto | Tractor equipped with working implements |
JPH02227381A (en) * | 1989-02-28 | 1990-09-10 | Mazda Motor Corp | Cooperative controller of rear-wheel steering and power steering for vehicle |
DE4005356A1 (en) * | 1990-02-16 | 1991-08-22 | Noell Gmbh | Multi-chassis vehicles - has drives to at least two wheels at each chassis to overcome obstacles |
DE4140124C1 (en) * | 1991-12-05 | 1992-12-10 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE4419131B4 (en) * | 1993-06-11 | 2008-12-18 | Volkswagen Ag | Motor vehicle, preferably passenger car |
DE4332287C1 (en) * | 1993-09-20 | 1994-11-03 | Kroll Fahrzeugbau Umwelt | Method and device for guiding a road vehicle, preferably in tight traffic areas |
-
1995
- 1995-10-04 DE DE19536987A patent/DE19536987A1/en not_active Withdrawn
-
1996
- 1996-03-29 WO PCT/CH1996/000112 patent/WO1996030595A1/en active IP Right Grant
- 1996-03-29 DE DE59601383T patent/DE59601383D1/en not_active Expired - Fee Related
- 1996-03-29 EP EP96906688A patent/EP0817889B1/en not_active Expired - Lifetime
- 1996-03-29 AT AT96906688T patent/ATE177166T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9630595A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ303105B6 (en) * | 2009-06-26 | 2012-04-04 | Ammann Czech Republic A.S. | Tandem-type compaction roller |
Also Published As
Publication number | Publication date |
---|---|
DE19536987A1 (en) | 1996-10-02 |
EP0817889B1 (en) | 1999-03-03 |
ATE177166T1 (en) | 1999-03-15 |
WO1996030595A1 (en) | 1996-10-03 |
DE59601383D1 (en) | 1999-04-08 |
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