CA2087879A1 - Vehicle and method for repairing road surfaces - Google Patents
Vehicle and method for repairing road surfacesInfo
- Publication number
- CA2087879A1 CA2087879A1 CA002087879A CA2087879A CA2087879A1 CA 2087879 A1 CA2087879 A1 CA 2087879A1 CA 002087879 A CA002087879 A CA 002087879A CA 2087879 A CA2087879 A CA 2087879A CA 2087879 A1 CA2087879 A1 CA 2087879A1
- Authority
- CA
- Canada
- Prior art keywords
- vehicle
- scraping tool
- filling material
- compacting
- vibration
- 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
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 60
- 238000007790 scraping Methods 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 230000008439 repair process Effects 0.000 claims description 18
- 230000006872 improvement Effects 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 244000201986 Cassia tora Species 0.000 description 1
- VGMFHMLQOYWYHN-UHFFFAOYSA-N Compactin Natural products OCC1OC(OC2C(O)C(O)C(CO)OC2Oc3cc(O)c4C(=O)C(=COc4c3)c5ccc(O)c(O)c5)C(O)C(O)C1O VGMFHMLQOYWYHN-UHFFFAOYSA-N 0.000 description 1
- 241000283014 Dama Species 0.000 description 1
- AJLFOPYRIVGYMJ-UHFFFAOYSA-N SJ000287055 Natural products C12C(OC(=O)C(C)CC)CCC=C2C=CC(C)C1CCC1CC(O)CC(=O)O1 AJLFOPYRIVGYMJ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- JNSGIVNNHKGGRU-JYRVWZFOSA-N diethoxyphosphinothioyl (2z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetate Chemical compound CCOP(=S)(OCC)OC(=O)C(=N/OC)\C1=CSC(N)=N1 JNSGIVNNHKGGRU-JYRVWZFOSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- AJLFOPYRIVGYMJ-INTXDZFKSA-N mevastatin Chemical compound C([C@H]1[C@@H](C)C=CC2=CCC[C@@H]([C@H]12)OC(=O)[C@@H](C)CC)C[C@@H]1C[C@@H](O)CC(=O)O1 AJLFOPYRIVGYMJ-INTXDZFKSA-N 0.000 description 1
- BOZILQFLQYBIIY-UHFFFAOYSA-N mevastatin hydroxy acid Natural products C1=CC(C)C(CCC(O)CC(O)CC(O)=O)C2C(OC(=O)C(C)CC)CCC=C21 BOZILQFLQYBIIY-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NCAIGTHBQTXTLR-UHFFFAOYSA-N phentermine hydrochloride Chemical compound [Cl-].CC(C)([NH3+])CC1=CC=CC=C1 NCAIGTHBQTXTLR-UHFFFAOYSA-N 0.000 description 1
- XXPDBLUZJRXNNZ-UHFFFAOYSA-N promethazine hydrochloride Chemical compound Cl.C1=CC=C2N(CC(C)N(C)C)C3=CC=CC=C3SC2=C1 XXPDBLUZJRXNNZ-UHFFFAOYSA-N 0.000 description 1
- 230000002226 simultaneous effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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
- E01C19/12—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 distributing granular or liquid materials
- E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
- E01C19/185—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect for both depositing and spreading-out or striking-off the deposited mixture
-
- 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
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
- E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
-
- 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
- E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
Abstract
ABSTRACT OF THE DISCLOSURE
A vehicle and method for repairing depressions in road surfaces by filling with asphalt or a similar filling material, wherein the vehicle includes a unit for heating and ripping existing road material, a delivery device for the filling material, a compacting machine, and a horizontally vibrating scraping tool. According to the inventive material, the damaged road surface is heated and ripped, the ripped material is mixed with an excess of filling material, the resulting mixture is compacted to a level above the level of the undamaged road surface, with excess filling material being removed by scraping with the remaining mixture of filling material and ripped road material being further compacted with a horizontally vibrating element.
A vehicle and method for repairing depressions in road surfaces by filling with asphalt or a similar filling material, wherein the vehicle includes a unit for heating and ripping existing road material, a delivery device for the filling material, a compacting machine, and a horizontally vibrating scraping tool. According to the inventive material, the damaged road surface is heated and ripped, the ripped material is mixed with an excess of filling material, the resulting mixture is compacted to a level above the level of the undamaged road surface, with excess filling material being removed by scraping with the remaining mixture of filling material and ripped road material being further compacted with a horizontally vibrating element.
Description
~8~
VEHICLE AND METHOD FOR REPAIRING ROAD SURFACES
BACKGROUND OF THE INVENTION
Field o~ the Invention The invention i9 directed generally to a vehicle and method for repairing road surfaces by filling depressions therein with asphalt or a similar filling material.
Description of Backqround Technoloqy Road repair vehicles of the type including a heating and repair unit,~a delivery device for filling material, and a compacting machine have generally been used only for the repair of large area road surfaces by removing the old surface layer, treating it, and reapplying it as described, for example, in DE-OS 26 55 ga4 (July 14, 1977) and counterpart U.S.
Patent No. 4,124,325 (November 7, 1978) to Cutler.
The use of such vehicles for local improvement of impact holes or similar depressions has not generally been successful due to the problem of applying the correct amount o~ filling material to areas to be repaired of widely variable size and distribukion. For the same reasons, it i8 difficult to subsequently homogeneously compact the applied material.
In practice, therefore, frequently an operator located outside the vehicle must ensure that the amount of filling material applied to a repair is correct. However, this procedure is expensive and the repair quality also depends on the ability of the particular operator and thus will be inconsistent and difficult to control.
SUMMARY ~F THE INVENTION
It i9 an ob;ect of the invention to overcome one or more oE the problem~ described above by providing an improved vehicle and method for repairing road surfaces, 90 that it will bP possible not only to repair entire street surfaces, but also to permit local 2~8~73 improvement of damaged road surfaces, whereby sufficiently homogeneous compacting may be provided independently of the size and distribution of the areas to be repaired, as well as ensuring a flush connection to the undamaged neighboring road surface.
The road repair vehicle of the invention includes a heating and repair unit for heating and ripping existing road material, a delivery device for filling material, a compacting machine disposed rearwardly of the delivery device, and a horizontally vi~rating scraping tool disposed rearwardly of the compacting machine. The compacting machine is adapted to compact ripped road material and added filling material mixed therewith supplied from the delivery device to a level which i9 higher than the surrounding, undamaged road surface, and the scraping tool is adapted to remove excess filling material.
According to the inventive method of repairing road surfaces, the material of the road surface is heated and ripped, the ripped material is mixed with an excess of filling material, the resulting mixture i9 precompacted to a leve~ which is above the level of the undamaged road ~urface, the e~ccess filling material is subsequently removed by scraping, and the remaining mixture of filling material and ripped road material i~ further compacted with a horizontally vibrating element.
Other objects and advantages of the invention will be apparent to those skilled in the art from a review of the following detailed description, taken in conjunction with the drawings and the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a somewhat schematic side elevation of a road repair vehicle of the invention.
Fig. 2 is an enlaryed sectional view of a portion of the vehicle of Fig. 1.
Fig. 3 i9 an enlar~ed overhead ~ectional view of the vehicle of Fig. 1.
Fig. ~ is a cros~-~ectional view of the vehicle of Fig. 3 ta}cen along line I~-IV of Fig. 3.
2~7~7~
DETAI~ED DESCRI_TION OF TH~ INVBNTION
According to the invention, a road repair vehicle and method are provided wherein a compacting m~chine ensures the compacting of a mixture of material heated and ripped from the damaged road surface and added heated filling material to a level which is higher than the surrounding undamaged road surface. A
horizontally vibrating scraping tool is disposed rearwardly of the compacting machine to remove exce3s material. Thus, more filling material is added than is necessary to improve the damaged area, and compacting is then carried out to an artificially elevated level, which is preferably about 1 to 3 cm above the level of the undamaqed road surface. Then, in a second step, the excess mixture of ripped surface material and filling material is removed with simultaneous compacting and smoothing of the road surface. This second compacting step follows immediately after the first step, so that the filling mixture is still at an elevated temperature, preferably of at least about 150C, and can be worked appropri.ately.
It h~s been found that ~ith these measures, excellent repair qualit~ of damaged road surface~ can be done with machinery alone, without manual labor of an operator located outside o~ the vehicle, and that the nature of the depressions (e.g. impact holes, cracks due to freezing, tracks or other damaged areas) and variations in size, depth, and distribution of the depressions do not affect the quality of repair.
Expediently, the horizontal vibrations of the scraping tool are carrie~ out transversely to the direction of travel of the vehicle with an amplitude of at least about 1 cm, pre~erably about 2 to about 5 cm, and at a frequency o a few Hertz, preferably about 1 to about 10 Hz, highly preferably about 2 to about 5 Hz. The speed of the vehicle is preferably about 2 m/min, and can be adap~ed to the depth of the damaged area a~ required.
A secondary vibration with an ampl.ttude o~
fractions of millimeters (i.e. less than about 1 mm, and preferably in the range of about 0.01 to about 0.5 2 ~
mm) and a fre~uency o~ at least about 50 H7, pre~erably about 50 to about 100 Hertz, and highly preferably above about 70 Hertz can be superimposed to the primary vibration. The secondary vibration can occur in either the horizontal or vertical direction, but horizontal vibration is preferred. As a result, the compacting quality is further improved.
A particularly preferred scraping tool has a concave bowed bottom side, preferably with a radius of curvature smaller than about 10 cm. It has been found, surprisingly, that with such a bottom profile o the scraping tool, protruding chipped particles and similar elements are removed from the coating surface or are pressed into it, and that gaps caused by small particles are closed. As a result of this, an optimal smooth road sur~ace i5 obtained.
In order to obtain smooth equalization of the repaired area with neighboring areas, it is preferred that the scraping tool is pressed onto the level of the neighboring undamaged road surface by loading with a weight, generally in the range of at least about one ton~
The scraping tool may be constructed in any of a variety of ways. For example, it can comprise two tools dispo~ed side by side at an obtuse angle, in order to discharge scraped material toward the outside or inside, as desired. However, it is generally simpler to provide a scraping tool which extends transversely with respect to the vehicle and mounted forwardly of a conveying device, which accepts, optionally warms, and conveys scraped material to the delivery unit or to a storage container.
The compacting machine comprises several compacting elements that are disposed side by side transversely to the dire~tion o~ travel o~ the vehicle.
The compactin~ elements each independently vibrates in the vertical direction with an amplitude in the centimeter ran~e, i.e. in the range of about 2 to about 10 cm. As a result, homo~eneous compacting is ensured, indapendently o~ the particular suitability o~ the various dama~ed areas to compa~tin~. Preferabl~, the ' 2 ~
individual compacting elements are elastically coupled in the vertical direction to individual associated driver units. While efficient operation contributing to homogeneous compacting i9 ensured by the use of individual driver units, it is especially preferred to operatively associate or couple the compacting elements with neighboring crank~ of a comnlon crankshaft.
For the regulation of the level of the resurfaced road, it is preferred that at least the compacting machine and the scraping tool, and optionally the delivery unit for the filling material, be mounted 80 that they can be moved in the ver~ical direction on the vehicle and rest on supporting wheels disposed on the side of the vehicle and rolling on the intact (undamaged) road surface or on tracks. With the aid of a lifting device, the compacting machine, scraping tool and optionally the delivery unit can be lifted from their working positions into an upper resting position, so that the vehicle can be moved rapidly between constxuction locations. When doing this, the delivery unit for the filling material is closed in the lower delivery region by a closin~
mechanism.
Turning to the drawings, an embodiment of a road repair vehicle of the invention is illustrated.
Fig. 1 shows a steerable road repair vehicle, generally desi~nated 1, which has on a forward structure 2 a plurality of surface heating devices 3 and 4, a plurality of ripper teeth 5 to rip the preheated, partially damaged underlying road s~rface, a delivery unit 6 with heated asphalt or similar filling material, with a compacting machine 7 and a scraping tool 8 disposed rearwardly (with respect to the direction of travel of the vehicle 1) of the delivery unit 6. In a rear structure of the vehicle 1, there i9 a drive motor and space to store gas cylinders, which supply the heating devices 3 and ~ and if necessary a source ~or heating the delivery unit 6 shown i~ Fi~s. ~ and 3, the delivery unit ~0 6 compri~es a ~tora~e contain~r with a delivery opening 6a, which lntrod~l.es ~illing material at or just above 2 ~
the level of the undamaged underlying surface. The delivery opening 6a has a guide shoe 6b at its forward end, while a rear wall is defined, at least in the lower region, by a scraper 6c, the height of which (i.e. the spacing from the underlying surface) can be adjusted. The lower edge of the scraper 6c is adjusted to a distance of a few centimeters above the level of the road and defines the amount of filling material which flows out from the delivery unit 6. The delivery opening 6a can be closed by a closure (not shown in the drawing for simplicity).
The compacting machine 7 which is disposed rearwardly of the delivery unit 6 includes one or a plurality of vertically vibrating compacting elements (7a-c) disposed side by side transversely to the direction of travel of the vehicle. The amplitude of vibration of each compacting element is independent the amplitude of vibration of the others, so that the resulting compacting effect is independent of the level of the base. For example, filling material collected in a relatively deep impact hole will of necessity be ~ompressed more deeply than that collected in a relatively shallow or flat damaged area. Thus, a highly homogeneous compacting quality is obtained independently of the depth and size of the damaged area. Yet, the compacting machine m~y be adjusted so that the level of the precompacted material will be a few centimeters above the final desired level.
In the embodiment of Figs. 2-4, the compacting machine 7 includes four oscillating plates 7a disposed ~ide by side, each coupled to a connecting rod 7c through, associated springs 7b. The connecting rods 7c are ultimately driven by a common crankshaft 7d, which carries a flywheel. The lower ends of the springs 7b are preferably surrounded by bellows 7e to protect them against soiling. Of course, other forms of the individual vibrating components are useul.
Optionally, a second, adjustable hei~ht scraper 9 may be disposed rearwardly of the compacting ~0 machine 7. Together with ~wo vertical side wall9 19 extending in the dire~tion oE travel (see Fig. ~) and 7 ~
the forward scraper 6c, the rear scraper 9 forms a kind of framework or box in order to retain the filling material in the region that is being compacted for a longer period of time. However, the height of the side walls 19 can be adjusted independently of the height of the scrapers 6c and 9, since they are intended to glide on the undamaged road surface. Therefore, the walls can be designed elastically in their lower regions, so that they can readily adapt to the unevenness of the road surface.
The compacting machine 7 and the two side walls 19 can be moved vertically on the vehicle 1 and may be supported on side wheels 13 (see Fig. 4) on the undamaged road surface or on corresponding tracks. The wheels 13 are mounted on struts 14 which, in turn, are designed so that they can be moved vertically on the forward vehicle structure 2. In addition, the compacting machine 7 is mounted on the struts 14 via elastic elements 15. Independently of the compacting machine 7 and the side walls 19, the scrapers 6c and 9 can also be moved vertically in order to adjust the desired dumping height.
Toward the rear end o~ the vehicle, a scraping tool comprisin~ a cylindrical tube 8, preferably having a diameter of about 10 to about 15 cm, is disposed transversely to the direction of travel of the vehicle. Its lowest point is tangent to the desired road le~el, i.e., the level of the undamaged neighboring road area, and vibrates horizontally transversely to the direction of vehicle travel at an amplitude of at least about 1 cm and at a frequency of about 2 to about 10 Hz, preferably about 2 to about 5 Hz, and highly preferably about 3 Hz. As a result, excess filling material will be shaved off and simultaneously, the repaired road surface will be finally compacted and smoothed by flush contact with the intact road surEace.
The slow primary vibration of the scraping tool is produced, ~or example, by an eccentric or crank ~0 mechanism 10, as show~ in Fi~. 3, while a superimposed secondary vibration of higher frequency is produced by 2~7~
a gyrating driver, a guided vibrator, or a similar unit (not shown).
In order that the framework defined by the side walls 19 and the scrapers 6c and 9 effectively extends rearwardly, to be able to encompass the scraping tool 8, the rear portions l9a of the walls 19 are connected to a back plate 20 and the scraping tool 8 through an elastic vibration joint 21 connected to the front portions of the wall 19. ~See Figs. 2 and 3.) The vibration joint 21 is designed so that it is able to take up the horizontal vibrations of the scraping tool 8 and of the walls associated therewith.
As a result, all the elements necessary for repair are effectively enclosed in a bo~-like framework having closed sides, which largely prevents discharge of unused fil:Ling material.
At the same time, the vibration joint 21 allows the rear area of the framework enclosing the scraping tool 8 to be moved vert$cally on the vehicle 1, by virtue of this region being supported on the intact road surface through the wheels 16 on both side~
of the vehicle. E~pediently, ad~ustment of height between the ~craping ~ool 8 and the wheels 16 i~l possible. Naturally, the wheels 16 mu~t be uncoupled from the horizontal vibrations of the scraping tool 8 by, for example, a horizontal guide or with the aid of elas~ic elements. This ensures that the compacting machine and the scraping tool are guided at a defined distance from the underlying road ~urface, that the previously existing variations in height are evenly smoothed, and that the compacted filling material will be flush with the undamaged road surface.
Alternatively, the scraping tool 8 can be raised without the wheels 16 with the aid of the wheels 13, when the vibration ]oint 21 is appropriately designed.
The mi~ture of excess filling material and road material scraped off by the scraping tool 8 iY
m~ved by a conveyin~ device disposed rearwardly of the ~0 scraplng tool 8, optionally with simultaneou~ heating, into the delivery container 6. In the illustrAted 2~7~
g embodiment, a continuous feed screw 11 disposed behind and parallel to the scraping tool 8 serves as a conveyor to move the scraped material to one side, where it is transported by an inclined endless belt 12 and is discharged into the delivery unit 6.
The working widths of the compacting machine 7 and the scraping tool 8 are selected to be wider than commonly encountered impact holes, etc. In any case, the side supporting wheels 13 and 16 must roll on the intact road surface or on tracks, so that the correct finished road level i9 ensured.
It is within the scope of the invention to separate the heating unit from the vehicle, or, alternatively, to operate with separate heating units lS in a separate vehicle to improve maneuverability.
The foregoing detailed description is given for clearnes3 of understanding only, and no unnecessary limitations should be understood therefrom, as modifications within the scope of the invention will be apparent to those skilled in the art.
VEHICLE AND METHOD FOR REPAIRING ROAD SURFACES
BACKGROUND OF THE INVENTION
Field o~ the Invention The invention i9 directed generally to a vehicle and method for repairing road surfaces by filling depressions therein with asphalt or a similar filling material.
Description of Backqround Technoloqy Road repair vehicles of the type including a heating and repair unit,~a delivery device for filling material, and a compacting machine have generally been used only for the repair of large area road surfaces by removing the old surface layer, treating it, and reapplying it as described, for example, in DE-OS 26 55 ga4 (July 14, 1977) and counterpart U.S.
Patent No. 4,124,325 (November 7, 1978) to Cutler.
The use of such vehicles for local improvement of impact holes or similar depressions has not generally been successful due to the problem of applying the correct amount o~ filling material to areas to be repaired of widely variable size and distribukion. For the same reasons, it i8 difficult to subsequently homogeneously compact the applied material.
In practice, therefore, frequently an operator located outside the vehicle must ensure that the amount of filling material applied to a repair is correct. However, this procedure is expensive and the repair quality also depends on the ability of the particular operator and thus will be inconsistent and difficult to control.
SUMMARY ~F THE INVENTION
It i9 an ob;ect of the invention to overcome one or more oE the problem~ described above by providing an improved vehicle and method for repairing road surfaces, 90 that it will bP possible not only to repair entire street surfaces, but also to permit local 2~8~73 improvement of damaged road surfaces, whereby sufficiently homogeneous compacting may be provided independently of the size and distribution of the areas to be repaired, as well as ensuring a flush connection to the undamaged neighboring road surface.
The road repair vehicle of the invention includes a heating and repair unit for heating and ripping existing road material, a delivery device for filling material, a compacting machine disposed rearwardly of the delivery device, and a horizontally vi~rating scraping tool disposed rearwardly of the compacting machine. The compacting machine is adapted to compact ripped road material and added filling material mixed therewith supplied from the delivery device to a level which i9 higher than the surrounding, undamaged road surface, and the scraping tool is adapted to remove excess filling material.
According to the inventive method of repairing road surfaces, the material of the road surface is heated and ripped, the ripped material is mixed with an excess of filling material, the resulting mixture i9 precompacted to a leve~ which is above the level of the undamaged road ~urface, the e~ccess filling material is subsequently removed by scraping, and the remaining mixture of filling material and ripped road material i~ further compacted with a horizontally vibrating element.
Other objects and advantages of the invention will be apparent to those skilled in the art from a review of the following detailed description, taken in conjunction with the drawings and the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a somewhat schematic side elevation of a road repair vehicle of the invention.
Fig. 2 is an enlaryed sectional view of a portion of the vehicle of Fig. 1.
Fig. 3 i9 an enlar~ed overhead ~ectional view of the vehicle of Fig. 1.
Fig. ~ is a cros~-~ectional view of the vehicle of Fig. 3 ta}cen along line I~-IV of Fig. 3.
2~7~7~
DETAI~ED DESCRI_TION OF TH~ INVBNTION
According to the invention, a road repair vehicle and method are provided wherein a compacting m~chine ensures the compacting of a mixture of material heated and ripped from the damaged road surface and added heated filling material to a level which is higher than the surrounding undamaged road surface. A
horizontally vibrating scraping tool is disposed rearwardly of the compacting machine to remove exce3s material. Thus, more filling material is added than is necessary to improve the damaged area, and compacting is then carried out to an artificially elevated level, which is preferably about 1 to 3 cm above the level of the undamaqed road surface. Then, in a second step, the excess mixture of ripped surface material and filling material is removed with simultaneous compacting and smoothing of the road surface. This second compacting step follows immediately after the first step, so that the filling mixture is still at an elevated temperature, preferably of at least about 150C, and can be worked appropri.ately.
It h~s been found that ~ith these measures, excellent repair qualit~ of damaged road surface~ can be done with machinery alone, without manual labor of an operator located outside o~ the vehicle, and that the nature of the depressions (e.g. impact holes, cracks due to freezing, tracks or other damaged areas) and variations in size, depth, and distribution of the depressions do not affect the quality of repair.
Expediently, the horizontal vibrations of the scraping tool are carrie~ out transversely to the direction of travel of the vehicle with an amplitude of at least about 1 cm, pre~erably about 2 to about 5 cm, and at a frequency o a few Hertz, preferably about 1 to about 10 Hz, highly preferably about 2 to about 5 Hz. The speed of the vehicle is preferably about 2 m/min, and can be adap~ed to the depth of the damaged area a~ required.
A secondary vibration with an ampl.ttude o~
fractions of millimeters (i.e. less than about 1 mm, and preferably in the range of about 0.01 to about 0.5 2 ~
mm) and a fre~uency o~ at least about 50 H7, pre~erably about 50 to about 100 Hertz, and highly preferably above about 70 Hertz can be superimposed to the primary vibration. The secondary vibration can occur in either the horizontal or vertical direction, but horizontal vibration is preferred. As a result, the compacting quality is further improved.
A particularly preferred scraping tool has a concave bowed bottom side, preferably with a radius of curvature smaller than about 10 cm. It has been found, surprisingly, that with such a bottom profile o the scraping tool, protruding chipped particles and similar elements are removed from the coating surface or are pressed into it, and that gaps caused by small particles are closed. As a result of this, an optimal smooth road sur~ace i5 obtained.
In order to obtain smooth equalization of the repaired area with neighboring areas, it is preferred that the scraping tool is pressed onto the level of the neighboring undamaged road surface by loading with a weight, generally in the range of at least about one ton~
The scraping tool may be constructed in any of a variety of ways. For example, it can comprise two tools dispo~ed side by side at an obtuse angle, in order to discharge scraped material toward the outside or inside, as desired. However, it is generally simpler to provide a scraping tool which extends transversely with respect to the vehicle and mounted forwardly of a conveying device, which accepts, optionally warms, and conveys scraped material to the delivery unit or to a storage container.
The compacting machine comprises several compacting elements that are disposed side by side transversely to the dire~tion o~ travel o~ the vehicle.
The compactin~ elements each independently vibrates in the vertical direction with an amplitude in the centimeter ran~e, i.e. in the range of about 2 to about 10 cm. As a result, homo~eneous compacting is ensured, indapendently o~ the particular suitability o~ the various dama~ed areas to compa~tin~. Preferabl~, the ' 2 ~
individual compacting elements are elastically coupled in the vertical direction to individual associated driver units. While efficient operation contributing to homogeneous compacting i9 ensured by the use of individual driver units, it is especially preferred to operatively associate or couple the compacting elements with neighboring crank~ of a comnlon crankshaft.
For the regulation of the level of the resurfaced road, it is preferred that at least the compacting machine and the scraping tool, and optionally the delivery unit for the filling material, be mounted 80 that they can be moved in the ver~ical direction on the vehicle and rest on supporting wheels disposed on the side of the vehicle and rolling on the intact (undamaged) road surface or on tracks. With the aid of a lifting device, the compacting machine, scraping tool and optionally the delivery unit can be lifted from their working positions into an upper resting position, so that the vehicle can be moved rapidly between constxuction locations. When doing this, the delivery unit for the filling material is closed in the lower delivery region by a closin~
mechanism.
Turning to the drawings, an embodiment of a road repair vehicle of the invention is illustrated.
Fig. 1 shows a steerable road repair vehicle, generally desi~nated 1, which has on a forward structure 2 a plurality of surface heating devices 3 and 4, a plurality of ripper teeth 5 to rip the preheated, partially damaged underlying road s~rface, a delivery unit 6 with heated asphalt or similar filling material, with a compacting machine 7 and a scraping tool 8 disposed rearwardly (with respect to the direction of travel of the vehicle 1) of the delivery unit 6. In a rear structure of the vehicle 1, there i9 a drive motor and space to store gas cylinders, which supply the heating devices 3 and ~ and if necessary a source ~or heating the delivery unit 6 shown i~ Fi~s. ~ and 3, the delivery unit ~0 6 compri~es a ~tora~e contain~r with a delivery opening 6a, which lntrod~l.es ~illing material at or just above 2 ~
the level of the undamaged underlying surface. The delivery opening 6a has a guide shoe 6b at its forward end, while a rear wall is defined, at least in the lower region, by a scraper 6c, the height of which (i.e. the spacing from the underlying surface) can be adjusted. The lower edge of the scraper 6c is adjusted to a distance of a few centimeters above the level of the road and defines the amount of filling material which flows out from the delivery unit 6. The delivery opening 6a can be closed by a closure (not shown in the drawing for simplicity).
The compacting machine 7 which is disposed rearwardly of the delivery unit 6 includes one or a plurality of vertically vibrating compacting elements (7a-c) disposed side by side transversely to the direction of travel of the vehicle. The amplitude of vibration of each compacting element is independent the amplitude of vibration of the others, so that the resulting compacting effect is independent of the level of the base. For example, filling material collected in a relatively deep impact hole will of necessity be ~ompressed more deeply than that collected in a relatively shallow or flat damaged area. Thus, a highly homogeneous compacting quality is obtained independently of the depth and size of the damaged area. Yet, the compacting machine m~y be adjusted so that the level of the precompacted material will be a few centimeters above the final desired level.
In the embodiment of Figs. 2-4, the compacting machine 7 includes four oscillating plates 7a disposed ~ide by side, each coupled to a connecting rod 7c through, associated springs 7b. The connecting rods 7c are ultimately driven by a common crankshaft 7d, which carries a flywheel. The lower ends of the springs 7b are preferably surrounded by bellows 7e to protect them against soiling. Of course, other forms of the individual vibrating components are useul.
Optionally, a second, adjustable hei~ht scraper 9 may be disposed rearwardly of the compacting ~0 machine 7. Together with ~wo vertical side wall9 19 extending in the dire~tion oE travel (see Fig. ~) and 7 ~
the forward scraper 6c, the rear scraper 9 forms a kind of framework or box in order to retain the filling material in the region that is being compacted for a longer period of time. However, the height of the side walls 19 can be adjusted independently of the height of the scrapers 6c and 9, since they are intended to glide on the undamaged road surface. Therefore, the walls can be designed elastically in their lower regions, so that they can readily adapt to the unevenness of the road surface.
The compacting machine 7 and the two side walls 19 can be moved vertically on the vehicle 1 and may be supported on side wheels 13 (see Fig. 4) on the undamaged road surface or on corresponding tracks. The wheels 13 are mounted on struts 14 which, in turn, are designed so that they can be moved vertically on the forward vehicle structure 2. In addition, the compacting machine 7 is mounted on the struts 14 via elastic elements 15. Independently of the compacting machine 7 and the side walls 19, the scrapers 6c and 9 can also be moved vertically in order to adjust the desired dumping height.
Toward the rear end o~ the vehicle, a scraping tool comprisin~ a cylindrical tube 8, preferably having a diameter of about 10 to about 15 cm, is disposed transversely to the direction of travel of the vehicle. Its lowest point is tangent to the desired road le~el, i.e., the level of the undamaged neighboring road area, and vibrates horizontally transversely to the direction of vehicle travel at an amplitude of at least about 1 cm and at a frequency of about 2 to about 10 Hz, preferably about 2 to about 5 Hz, and highly preferably about 3 Hz. As a result, excess filling material will be shaved off and simultaneously, the repaired road surface will be finally compacted and smoothed by flush contact with the intact road surEace.
The slow primary vibration of the scraping tool is produced, ~or example, by an eccentric or crank ~0 mechanism 10, as show~ in Fi~. 3, while a superimposed secondary vibration of higher frequency is produced by 2~7~
a gyrating driver, a guided vibrator, or a similar unit (not shown).
In order that the framework defined by the side walls 19 and the scrapers 6c and 9 effectively extends rearwardly, to be able to encompass the scraping tool 8, the rear portions l9a of the walls 19 are connected to a back plate 20 and the scraping tool 8 through an elastic vibration joint 21 connected to the front portions of the wall 19. ~See Figs. 2 and 3.) The vibration joint 21 is designed so that it is able to take up the horizontal vibrations of the scraping tool 8 and of the walls associated therewith.
As a result, all the elements necessary for repair are effectively enclosed in a bo~-like framework having closed sides, which largely prevents discharge of unused fil:Ling material.
At the same time, the vibration joint 21 allows the rear area of the framework enclosing the scraping tool 8 to be moved vert$cally on the vehicle 1, by virtue of this region being supported on the intact road surface through the wheels 16 on both side~
of the vehicle. E~pediently, ad~ustment of height between the ~craping ~ool 8 and the wheels 16 i~l possible. Naturally, the wheels 16 mu~t be uncoupled from the horizontal vibrations of the scraping tool 8 by, for example, a horizontal guide or with the aid of elas~ic elements. This ensures that the compacting machine and the scraping tool are guided at a defined distance from the underlying road ~urface, that the previously existing variations in height are evenly smoothed, and that the compacted filling material will be flush with the undamaged road surface.
Alternatively, the scraping tool 8 can be raised without the wheels 16 with the aid of the wheels 13, when the vibration ]oint 21 is appropriately designed.
The mi~ture of excess filling material and road material scraped off by the scraping tool 8 iY
m~ved by a conveyin~ device disposed rearwardly of the ~0 scraplng tool 8, optionally with simultaneou~ heating, into the delivery container 6. In the illustrAted 2~7~
g embodiment, a continuous feed screw 11 disposed behind and parallel to the scraping tool 8 serves as a conveyor to move the scraped material to one side, where it is transported by an inclined endless belt 12 and is discharged into the delivery unit 6.
The working widths of the compacting machine 7 and the scraping tool 8 are selected to be wider than commonly encountered impact holes, etc. In any case, the side supporting wheels 13 and 16 must roll on the intact road surface or on tracks, so that the correct finished road level i9 ensured.
It is within the scope of the invention to separate the heating unit from the vehicle, or, alternatively, to operate with separate heating units lS in a separate vehicle to improve maneuverability.
The foregoing detailed description is given for clearnes3 of understanding only, and no unnecessary limitations should be understood therefrom, as modifications within the scope of the invention will be apparent to those skilled in the art.
Claims (23)
1. A vehicle for the repair of road surfaces by filling of depressions therein with a filling material, said vehicle comprising heating and repair units for heating and ripping existing road material, respectively, a delivery device for the filling material, a compacting machine disposed rearwardly of said delivery device, and a horizontally vibrating scraping tool disposed rearwardly of said compacting machine, wherein the compacting machine is adapted to compact ripped road material and added filling material mixed therewith and supplied from said delivery device to a level which is higher than the surrounding, undamaged road surface, and wherein said scraping tool is adapted to remove excess filling material.
2. The vehicle of claim 1 wherein the horizontal vibration of the scraping tool takes place transversely to the direction of travel of said vehicle.
3. The vehicle of claim 1 wherein the amplitude of vibration of the horizontally vibrating scraping tool is at least about 1 cm and the frequency of said vibration is about 1 to about 10 Hertz.
4. The vehicle of claim 3 wherein the amplitude of vibration of the scraping tool is about 2 to about 5 centimeters and the frequency of said vibration is about 2 to about 5 Hertz.
5. The vehicle of claim 1 wherein the scraping tool is given a secondary vibration with an amplitude of less than about 1 millimeter and a frequency of at least about 50 Hertz.
6. The vehicle of claim 5 wherein the amplitude of said secondary vibration is less at about 0.5 millimeter and the frequency of said additional vibration is about 70 to about 100 Hertz.
7. The vehicle of claim 5 wherein said secondary vibration is in the horizontal direction.
8. The vehicle of claim 1 wherein the scraping tool has a concave bottom side.
9. The vehicle of claim 8 wherein said bottom side has a radius of curvature of less than about 10 cm.
10. The vehicle of claim 8 wherein the scraping tool comprises a cylindrical tube.
11. The vehicle of claim 1 wherein the scraping tool is pressed to the level of the undamaged road surface by loading with a weight.
12. The vehicle of claim 1 wherein the scraping tool extends transversely to the vehicle.
13. The vehicle of claim 1 further comprising a conveying device associated with the scraping tool for removal of material scraped by the scraping tool.
14. The vehicle of claim 13 wherein said conveying device comprises a conveying element disposed parallel to and forwardly of the scraping tool.
15. The vehicle of claim 14 wherein said conveying element comprises a rotating screw.
16. The vehicle of claim 1 wherein said compacting machine comprises several compacting elements disposed side by side transversely to the direction of travel of said vehicle.
17. The vehicle of claim 16 wherein said compacting elements vibrate vertically with an amplitude in the range of about 2 to about 10 centimeters.
18. The vehicle of claim 16 wherein said compacting elements are vertically elastically coupled with associated driver units.
19. The vehicle of claim 16 wherein said compacting elements are operatively associated with neighboring cranks of a common crankshaft.
20. The vehicle of claim 1 wherein at least the compacting machine and the scraping tool are disposed for vertical movement on the vehicle and are supported on supporting wheels disposed on the side of the vehicle and rolling on surrounding undamaged road surface or on tracks.
21. The vehicle of claim 20 wherein the delivery device is disposed for vertical movement on the vehicle and is supported on supporting wheels disposed on the side of the vehicle on surrounding undamaged road surface or on tracks.
22. The vehicle of claim 1 wherein at least the compacting machine, the delivery device and the scraping tool are connected to a lifting device, which can be moved from a lower working position to an upper resting position.
23. In a method for repair of road surfaces by filling of depressions therein wherein the material of the road surface is heated and ripped, the ripped material is mixed with filling material, and the resulting mixture is compacted, the improvement wherein the filling material is added in excess, the resulting mixture is precompacted to a level which is above the level of the undamaged road surface, the excess filling material is subsequently removed by scraping, and by simultanously further compacting the precompacted material with a horizontally vibrating element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4201984.2 | 1992-01-25 | ||
| DE4201984A DE4201984A1 (en) | 1992-01-25 | 1992-01-25 | VEHICLE FOR REPAIRING ROAD CEILINGS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2087879A1 true CA2087879A1 (en) | 1993-07-26 |
Family
ID=6450214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002087879A Abandoned CA2087879A1 (en) | 1992-01-25 | 1993-01-22 | Vehicle and method for repairing road surfaces |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0560021B1 (en) |
| JP (1) | JPH05247910A (en) |
| AT (1) | ATE143077T1 (en) |
| CA (1) | CA2087879A1 (en) |
| DE (2) | DE4201984A1 (en) |
| ES (1) | ES2094387T3 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967695A (en) * | 1995-02-27 | 1999-10-19 | Wacker Werke Gmbh & Co. Kg | Vehicle for repairing road surfaces |
| US8556536B2 (en) | 2009-01-02 | 2013-10-15 | Heatwurx, Inc. | Asphalt repair system and method |
| US8562247B2 (en) | 2009-01-02 | 2013-10-22 | Heatwurx, Inc. | Asphalt repair system and method |
| USD700633S1 (en) | 2013-07-26 | 2014-03-04 | Heatwurx, Inc. | Asphalt repair device |
| US8801325B1 (en) | 2013-02-26 | 2014-08-12 | Heatwurx, Inc. | System and method for controlling an asphalt repair apparatus |
| US9416499B2 (en) | 2009-12-31 | 2016-08-16 | Heatwurx, Inc. | System and method for sensing and managing pothole location and pothole characteristics |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE208090T1 (en) * | 1997-02-20 | 2001-11-15 | Ccs Technology Inc | METHOD FOR INSERTING AN OPTICAL OR ELECTRICAL CABLE INTO A SOLID LAYING GROUND AND DEVICE FOR LAYING THE CABLE |
| ITAN20020055A1 (en) | 2002-11-21 | 2004-05-22 | Mario Farinelli | APPARATUS FOR CLOSING HOLES, CRACKS AND / OR |
| JP4687968B2 (en) * | 2005-10-04 | 2011-05-25 | 清水建設株式会社 | Impermeable member construction device and impermeable member construction method |
| JP4835922B2 (en) * | 2006-02-28 | 2011-12-14 | 清水建設株式会社 | Compaction machine |
| DE202008008979U1 (en) * | 2008-07-04 | 2009-08-13 | Metzner Pflasterbau Gmbh | Bedding and Einrüttelvorrichtung for processing a floor surface, in particular for Einsanden a paved floor covering |
| 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 |
| CN111877114A (en) * | 2020-08-09 | 2020-11-03 | 杜东升 | Concrete pavement repairing device and construction method thereof |
| CN112482172A (en) * | 2020-10-30 | 2021-03-12 | 张傲 | Pavement repairing device and method for highway maintenance |
| CN112853902B (en) * | 2021-01-14 | 2022-03-22 | 杜文瑞 | Highway road surface patching device |
| CN112832090B (en) * | 2021-01-14 | 2022-06-10 | 广东晟泰工程有限公司 | Road pouring equipment and pouring method |
| CN112921776A (en) * | 2021-02-02 | 2021-06-08 | 广州亿新建设集团有限公司 | Road repair pitch sprinkler |
| CN113293673A (en) * | 2021-05-25 | 2021-08-24 | 浙江原野建设有限公司 | Construction device for water-retaining combined layer |
| CN113737623A (en) * | 2021-09-02 | 2021-12-03 | 龙奕宇 | Road surface prosthetic devices for highway engineering |
| CN114182605A (en) * | 2022-01-04 | 2022-03-15 | 屠文水 | Road repairing and tamping vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2524762C2 (en) * | 1975-06-04 | 1983-02-03 | Christoph Dipl.-Ing. 2104 Hamburg Stiehler | Method for filling a lane channel with bituminous mix and a roller for carrying out the method |
| CA1081516A (en) * | 1975-12-31 | 1980-07-15 | Earl F. Cutler | Asphalt pavement recycling apparatus |
| DE2700137A1 (en) * | 1977-01-04 | 1978-07-13 | Hoes Maschf Klaus Gerd | Road asphalt surface renovating machine - has old surface heated and softened for planing of set thickness to relay with new additive |
| DE2705687A1 (en) * | 1977-02-11 | 1978-08-17 | Marks Gmbh & Co Kg | Bitumen road surface renovating machine - has supply hopper supported on hinged A=frames driven by hydraulic cylinders to lower hopper for loading |
| DE2812801A1 (en) * | 1978-03-23 | 1979-09-27 | Marks Gmbh & Co Kg | Road surface cutter support roller - has hydraulic unit holding end of wheel spindle attaching it to support device |
| DE3022513C2 (en) * | 1980-06-16 | 1984-12-20 | Reinhard 5461 Windhagen Wirtgen | Method and device for repairing gaping longitudinal seams or cracks in road surface courses |
| DE3906352A1 (en) * | 1989-03-01 | 1990-09-13 | Wirtgen Gmbh | Apparatus for repairing longitudinally running damage in roadway pavings |
-
1992
- 1992-01-25 DE DE4201984A patent/DE4201984A1/en not_active Withdrawn
-
1993
- 1993-01-19 AT AT93100710T patent/ATE143077T1/en active
- 1993-01-19 ES ES93100710T patent/ES2094387T3/en not_active Expired - Lifetime
- 1993-01-19 DE DE59303794T patent/DE59303794D1/en not_active Expired - Fee Related
- 1993-01-19 EP EP93100710A patent/EP0560021B1/en not_active Expired - Lifetime
- 1993-01-22 CA CA002087879A patent/CA2087879A1/en not_active Abandoned
- 1993-01-22 JP JP5008694A patent/JPH05247910A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967695A (en) * | 1995-02-27 | 1999-10-19 | Wacker Werke Gmbh & Co. Kg | Vehicle for repairing road surfaces |
| US8556536B2 (en) | 2009-01-02 | 2013-10-15 | Heatwurx, Inc. | Asphalt repair system and method |
| US8562247B2 (en) | 2009-01-02 | 2013-10-22 | Heatwurx, Inc. | Asphalt repair system and method |
| US8714871B2 (en) | 2009-01-02 | 2014-05-06 | Heatwurx, Inc. | Asphalt repair system and method |
| US9022686B2 (en) | 2009-12-31 | 2015-05-05 | Heatwurx, Inc. | System and method for controlling an asphalt repair apparatus |
| US9416499B2 (en) | 2009-12-31 | 2016-08-16 | Heatwurx, Inc. | System and method for sensing and managing pothole location and pothole characteristics |
| US8801325B1 (en) | 2013-02-26 | 2014-08-12 | Heatwurx, Inc. | System and method for controlling an asphalt repair apparatus |
| USD700633S1 (en) | 2013-07-26 | 2014-03-04 | Heatwurx, Inc. | Asphalt repair device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0560021A1 (en) | 1993-09-15 |
| ES2094387T3 (en) | 1997-01-16 |
| DE4201984A1 (en) | 1993-07-29 |
| EP0560021B1 (en) | 1996-09-18 |
| DE59303794D1 (en) | 1996-10-24 |
| ATE143077T1 (en) | 1996-10-15 |
| JPH05247910A (en) | 1993-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |