Street construction machine with a material deflector
Abstract
This record has no abstract on file.
Term
4.4 yearsto projected expiry
Projected expiry 23 February 2031, counted from filing; an application has no term until it is granted.
- Priority and filed
- Published
- Today
- Projected expiry
11 claims: 7 independent, 4 dependent
- 1Zastrzeżenia patentowe 1. Maszyna do budowy dróg (F) z podwoziem (R) i przynajmniej jednym, umieszczonym w kierunku jazdy przed podwoziem (R), wychyinym do góry i opuszczalnym wyrzutnikiem materiału (M), przy czym maszyna do budowy dróg (F) posiada system sterowania (S), za pomocą którego operator może wybierać przynajmniej pomiędzy rodzajami eksploatacji "wbudowywanie" i "transport", przy czym maszyna do budowy dróg w rodzaju eksploatacji "wbudowywanie" jest przeznaczona do przeprowadzania wbudowywania nawierzchni drogowej, a w rodzaju eksploatacji "transport" jest poruszana od jednego punktu do drugiego punktu, przy czym nie następuje równocześnie proces wbudowywania, znamienna tym, że system sterowania (S) jest przeznaczony ponadto do automatycznego całkowitego wychylania do góry wy rzutnika materiału (M) w rodzaju eksploatacji "transport" i do umożliwienia operatorowi w rodzaju eksploatacji "wbudowywanie" ręcznego ustawiania położenia wychylnego wyrzutnika materiału (M).
- 2Maszyna do budowy dróg według zastrzeżenia 1, znamienna tym, że wyrzutnik materiału (M) jest wychylny do góry w odniesieniu do linii poziomej pod kątem (a), wynoszącym do 30°, korzystnie do 35°.
- 3Maszyna do budowy dróg według jednego z poprzednich zastrzeżeń, znamienna tym, że wyrzutnik materiału (M) jest wychylny za pomocą systemu hydraulicznego (H).
- 4Maszyna do budowy dróg według jednego z poprzednich zastrzeżeń, znamienna tym, że wyrzutnik materiału (M) jest osadzony poza swoim całkowicie wychylonym do góry położeniem ze swobodnym przejściem, dopuszczającym wychylanie do góry i/lub wychylanie do dołu.
- 5Maszyna do budowy dróg według zastrzeżenia 4, znamienna tym, że punkt zazębienia (11) cylindra hydraulicznego (7) na wyrzutniku materiału (M) jest osadzony w otworze podłużnym (12).
- 6Maszyna do budowy dróg według zastrzeżenia 4, znamienna tym, że cylinder hydrauliczny (7) przyjmuje położenie nie związane z podłożem dla osadzenia wyrzutnika materiału (M) ze swobodnym przejściem.
- 7Maszyna do budowy dróg według jednego z poprzednich zastrzeżeń, znamienna tym, że wyrzutnik materiału (M) jest utrzymywany w swoim całkowicie wychylonym do góry położeniu przez zawór przeciwzwrotny w systemie hydraulicznym, przez rygiel i/fub przez mechaniczną dźwignię kolanową.
- 8Maszyna do budowy dróg według jednego z poprzednich zastrzeżeń, znamienna tym, że jest przewidziany szczególny element obsługowy (15), przy uruchomieniu którego w rodzaju eksploatacji "wbudowywanie" ΕΡ 2 492 396 Β1 system sterowania (5) powoduje automatycznie wychylanie do góry wyrzutnika materiału (M) do jego całkowicie wychylonego do góry położenia.
- 9Maszyna do budowy dróg według jednego z poprzednich zastrzeżeń, znamienna tym, że maszynę do budowy dróg (F) stanowi wykańczarka, koparka albo zasilacz.
- 10Sposób eksploatacji maszyny do budowy dróg (F) z podwoziem (R) i umieszczonym w kierunku jazdy przed podwoziem (R), wychylnym do góry i opuszczalnym wyrzutnikiem materiału (M), przy czym operator wybiera za pomocą systemu sterowania (S) maszyny do budowy dróg (F) przynajmniej pomiędzy rodzajami eksploatacji "wbudowywanie" i "transport", przy czym maszyna do budowy dróg w rodzaju eksploatacji "wbudowywanie" jest przeznaczona do przeprowadzania wbudowywania nawierzchni drogowej, a w rodzaju eksploatacji "transport" jest poruszana od jednego punktu do drugiego punktu, przy czym nie następuje równocześnie proces wbudowywania, znamienny tym, że wyrzutnik materiału (M) w rodzaju eksploatacji "transport" jest automatycznie wychylany do góry do jego najwyższego położenia wychylnego i że operator w rodzaju eksploatacji "wbudowywanie" ustawia ręcznie położenie wychyine wyrzutnika materiału (M).
- 11Sposób według zastrzeżenia 10, znamienny tym, że wyrzutnik materiału (M) poza swoim całkowicie wychylonym do góry położeniem osadza się ze swobodnym przejściem, dopuszczającym wychylanie do góry i/lub wychylanie do dołu. ΕΡ 2 492 396 Β1 FIG. 1 ΕΡ 2 492 396 Β1 C FIG. 2 FIG. 3 ΕΡ 2 492 396 Β1 FIG. 4 FIG. 5 ΕΡ 2 492 396 Β1 PUBLIKACJE CYTOWANE W OPISIE Poniższa lista publikacji cytowanych przez zgłaszającego ma na celu wyłącznie pomoc dla czytającego i nie stanowi części dokumentu patentu europejskiego. Pomimo, że dołożono największej staranności przy jej tworzeniu, nie można wykluczyć błędów lub przeoczeń i EUP nie ponosi żadnej odpowiedzialności w tym względzie. Dokumenty patentowe cytowane w opisie • US 3732024 A [0002] • DE 29915875 U1 [0004] [0004] • EP 1083263A1 [0004]
Independent claims11
33 paragraphs, as filed
[0001] The invention relates to a road construction machine according to the preamble of claim 1 and a method of operating such a road construction machine, embedded material which falls from the material tank of the respective road-building machine in front of the machine. The goal is to remove unevenness on the surface of the ground on which the road surface is to be produced, because such unevenness adversely affects the quality of the road surface produced. During transport travel at which the road construction machine moves outside the embedding process from one point to another point or when the road construction machine collides with a low floor vehicle, the material ejectors are folded up manually and in the fully unfolded position they are locked mechanically. Thus, they allow a larger approach angle for the road construction machine and the material ejector is not damaged by sagging on obstacles. However, manually ejecting the material ejector upwards is cumbersome and time-consuming. Such a conventional material ejector results from US 3,732,024 A.
[0003] Also during the incorporation process, the material ejector must be folded up temporarily to be able to pass, for example, obstacles such as channel covers. At the same time, the availability of the material ejector is partly very bad, because the walls of the material tank of the road construction machine, located directly above the material ejector, can be folded down.
[0004] Improvement is made possible by the material ejector for the road construction machine described in DE 299 15 875 U1 or in parallel EP 1 083 263 A1. This document, which is the closest prior art, already addresses the problem that the material scrapers can interfere with or create undesirable ruts on the road surface when reloading the finisher onto a low-floor vehicle. Thus, DE 299 15 875 U1 proposes that the material ejector be mounted in such a way that it is limited only in its downward movement path and thus has a free passage upwards. [0005] The object of the present invention is to further improve road construction machines with a material ejector, especially with regard to even simpler manipulation for the operator.
[0006] This task is solved by a road construction machine with the features of claim 1 or a method of operating a road construction machine with the features of claim 10. Advantageous developments of the invention are given in the dependent claims.
[0007] The invention is characterized in that the road construction machine has a control system by which the operator can choose between different types of operation, at least the "embedding" and "transport" types of operation being available. In the "embedding" type of operation, the road construction machine is designed to carry out embedding road pavement. In the "transport" mode of operation, a road construction machine can be moved from one point to another point, without being embedded at the same time.
ΕΡ 2 492 396 Β1 [0008] The control system of the road construction machine according to the invention is now intended for the automatic upward tilting of the material ejector in the "transport" mode of operation<sup>1</sup>. However, in the "embedding" type of operation, the control system is designed so that the operator can manually set the swinging position of the material ejector.
[0009] The advantage of the road construction machine according to the invention is that the operator practically no longer has to care for the material ejector. It is sufficient when the operator chooses between operating modes "embedding" and "transport". The control system then automatically contributes to the optimal setting of the material ejector, without the operator having to activate the material ejector separately, not to mention lifting it manually. In this way, material ejection handling is significantly improved, and damage to the road construction machine or other transport vehicles such as low-floor vehicles can be avoided. The road construction machine according to the invention can no longer follow the fact that the operator of this road construction machine during transport travel or when reloading the road construction machine forgets to bring the material ejector to its raised position.
[0010] Further simplification can be achieved by the fact that the control system stores in memory the material ejector used in the "embedding" pivoting (possibly variable) operating mode. When the operator selects or activates the "incorporation" mode of operation, the material ejector will be automatically entered into this stored swing position. From this position it can be further swung manually. The operator can store in the control system a new standard swing position for the "embedding" type of operation. [0011] Preferably, the material ejector is pivotable upwards relative to the horizontal line at an angle of up to 30 °, preferably up to 35 °. This allows both a favorable approach angle for the road construction machine, for example a low-floor vehicle, as well as reliable removal of the material ejector in the event of obstacles in front of the road construction machine.
[0012] Automatic adjustment of the material ejector to its various pivoting positions can be accomplished by means of a hydraulic system. Usually there are hydraulic circuits on road construction machines, for example for moving the tank walls to the material and leveling boards so that anticipating the next hydraulic system for the material ejector does not constitute a significant additional effort. It would also be possible to integrate the hydraulic system for the material ejector with the existing hydraulic system.
[0013] Particular advantages arise when the material ejector is mounted outside its fully pivoted up position with free passage allowing upward tilting. This free passage allows the material ejector to move up itself when it passes over obstacles in front of the road construction machine. By this, it is prevented that the material ejector hangs on obstacles such as, for example, channel covers and in this way could block the movement of the entire road construction machine. After passing an obstacle, the material ejector can move under its own weight again to the previously set swing position.
[0014] In order to allow such free passage, preferably the meshing point of the hydraulic cylinder on the material ejector is embedded in the elongated hole. Placing such a hole
ΕΡ 2 492 396 Β1 longitudinally directly at the meshing point of the hydraulic cylinder allows a structurally simple free passage for the material ejector.
[0015] Additionally or alternatively, it is possible that the hydraulic cylinder pivoting the material ejector assumes a non-ground position to seat the material ejector in the free passage. A position not related to the ground of the hydraufic cylinder could even be adjustable, to set the angle at which the material ejector can be moved with free passage, In its fully swung up position, the material ejector should be secured so that it cannot swing out in undesirable way down. This can occur because the material ejector in its fully swung up position is held by a non-return valve in the hydraulic system, by a bolt and / or by a mechanical knee lever.
[0017] On the road construction machine, a special operating element may also be provided, such as, for example, a push-button, at the start of which, in the "built-in" mode of operation, the control system automatically pivots the material ejector up into its fully upward position. This particular operating element can be actuated by the operator of a road construction machine when he recognizes an obstacle or other situation that requires quick or temporary tilting of the material ejector.
[0018] The road construction machine may be in particular a finishing machine, a power supply for the finishing machine or an excavator. Alternatively, however, other construction machines, for example track construction machines, could have a material ejector and could be configured according to the invention.
[0019] The invention also relates to a method of operating a road construction machine in which the operator selects via the control system of a road construction machine at least between the types of operation "incorporation" and "transport", the material ejector in the mode of operation "transport" being automatically pivoted up to its highest deflected position and the operator in the "embedding" mode of operation manually sets the deflected position of the material ejector.
[0020] The preferred embodiment of the invention will be explained in more detail below with reference to the drawing. They show in detail:
figure 1 the road construction machine according to the invention, in particular a finishing machine, figure 2 material ejector according to the invention in the lower tilting position, figure 3 shown in figure 2 the material ejector in its fully tilted position, figure 4 a second embodiment the material ejector according to the invention, and figure 5 shown in figure 4 the material ejector in its fully tilted position.
[0021] Equal components are indicated in the figures with the same identifiers without exception.
[0022] Figure 1 shows the finisher F as an example for the road construction machine according to the invention. Alternatively, F road machines may be an excavator or a power supply. this
ΕΡ 2 492 396 Β1 Finisher F has a base 1 with an R chassis, in the example shown is a crawler chassis. On base 1, at the front end in working direction, a material container B for built-in material is provided, filled from filling side E. On base 1 is the primary drive source 2, e.g. a diesel engine, and behind this drive source 2 there is a control station .
[0023] The tracked chassis has on both long sides of the base 1 in each one half of the chassis longitudinally lying T girder, which can be supported movably at a height or swingingly on the base 1. The girder T supports the caterpillar chain K on the chain wheels. On each T girder, in the working direction, a material ejector M is located in front of its crawler chain K. The material ejector M is used to spread the material lying in front of the finisher F on the surface of the substrate and in particular to keep it away from the chassis R. For this purpose, the material ejector M can have an ejection surface A obliquely relative to the direction of travel, by which it moves the material lying on the surface of the ground inwards between the K crawler chains in order to keep track K tracks free.
The road construction machine F according to the invention has the control system S. By means of the operating device D at the control station 3, the operator of the road construction machine F can choose between different types of operation, in particular between the "transport" and "incorporation" operating modes . The operator selects the type of operation "embedding" when the road construction machine should actively participate in the road construction process, for example by applying a road surface to the surface of the ground or by transporting the material to be built into the subsequent finishing machine. The S control system is preferably intended for supplying, when selecting the type of operation, the "incorporation" of specific working aggregates, such as conveyor devices and a leveling board for an active state of operation. The operator chooses the "transport" mode of operation, however, when the F road construction machine is only to be moved, without the road surface being built in.
[0026] The finisher F according to figure 1 also has a hydraulic system H. This schematically represented hydraulic system H is controlled by the control system S. The hydraulic system is used inter alia to pivot the material ejector M.
[0026] Figure 2 shows a side view of the material ejector according to the invention provided on the chassis R of a road construction machine F. The material ejector M is arranged so that its ejection surface A is in the direction of travel in front of the front end of the chassis R road construction machinery F. The chassis R need not be a crawler chassis, but it can be a wheeled chassis as well.
[0027] The ejection surface A is positioned obliquely with respect to the running direction of the chassis R. By means of fastening means 4, for example screws, the ejection surface A is detachably and optionally adjustable in the boom 5. This boom is pivotable about a horizontal pivot axis 6. This swing axis 6 is located on the girder T of chassis R.
[0028] A hydraulic cylinder 7 is provided between the chassis beam T of the chassis R and the boom 5. The hydraulic cylinder 7 is supplied by the hydraulic system H with fluid under pressure to draw or extend the piston 8 and thus change the length of the hydraulic cylinder 7. Left
ΕΡ 2 492 396 Β1 in figure 2 the end of the hydraulic cylinder 7 is mounted on a support element 9, which for its part is pivotably mounted by means of a pivot bearing 10 on the girder T of the chassis R. Lying opposite the support element 9, the outer end of the piston 8 (see figure 3 ) is the meshing point 11 of the hydraulic cylinder 7. This meshing point 11, which may include, for example, a pin positioned horizontally, is positioned in the oblong hole 12 in the boom 5.
[0029] Figure 2 shows the material ejector M in the lowered position, in which the boom 5 extends substantially in a horizontal direction, i.e. the material ejector (or scraper) M rests on the surface of the ground or on the thrust screw. The hydraulic cylinder 7 is in its retracted position. The engagement point 11 of the hydraulic cylinder 7 is in the center of the elongated hole 12 in the boom 5. The cooperation between the elongated hole 12 and the meshing point 11 of the hydraulic cylinder allows the material ejector M to move freely up and down. Without adjusting the hydraulic cylinder 7, the material ejector M can swing out at an angle of tilting down until the meshing point 11 of the hydraulic cylinder 7 gets to the right end 13 of the elongated hole 12 or the thrust screw, or it can swing up until the meshing point 11 hydraulic cylinder 7 gets into the left end 14 of the elongated hole 12. Such a passive, temporary pivoting movement can be carried out by the material ejector M when it encounters an obstacle in front of the road construction machine F. Free access can also be enabled by the fact that the hydraulic cylinder 7 assumes a non-ground position.
[0030] Figure 3 shows the material ejector M in its fully swung up position. Relative to the horizontal line, the material ejector M was tilted at an angle α of approximately 27 ° upwards, wherein the hydraulic system H supplied the hydraulic cylinder 7 with high pressure fluid, thereby extending the hydraulic cylinder 7. By this extension of the hydraulic cylinder 7, the engagement point 11 of the hydraulic cylinder 7 acts on the front end 13 of the elongated hole 12 and thus moves the boom 5 upwards. This movement can be caused by the H control system, with the operator selecting operating mode "transport" in operating field D. Movement can also be triggered by the operator starting at the control station 3 of road construction machines F a special operating element 15, for example button 15, to raise the "build-in" temporarily and without changing this type of operation with the material ejector M.
[0031] The operation of the road construction machine F according to the invention is greatly simplified by the fact that the movement of the material ejector M occurs automatically by the operator choosing a particular type of operation of the road construction machine F and / or activating a special operating element 15. Thereby there may be no effort by manually lifting the material ejector M.
[0032] Figure 4 shows a second embodiment of a material ejector M. This second embodiment differs from the first embodiment in that a stop screw 20 is provided on the girder T of the chassis R of the finisher F. This stop screw 20 is even more clearly visible when fully swung up the material ejector position M, which is shown in figure 5. The stop screw 20 cooperates with the respective cooperating stop on the boom 5 of the material ejector M and limits the swing path of the boom 5 to the rear. Optionally, the stop screw 20 can be adjusted to vary the rearward-swinging angle of the material ejector boom M.
ΕΡ 2 492 396 Β1 [0033] It would be possible for the material ejector M in its usual position not to have a free up and down passage, but to have only a free up (or down) free passage to avoid obstacles.
9 members in 5 offices
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 11001515 | European Patent Office (EPO) | A | |
| EP20110001515 | – | – | – |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| US2012213585A1 | United States of America | A1 | |
| CN102650115A | China | A | |
| EP2492396A1 | European Patent Office (EPO) | A1 | |
| JP2012172515A | Japan | A | |
| US8480331B2 | United States of America | B2 | |
| EP2492396B1 | European Patent Office (EPO) | B1 | |
| PL2492396T3This record | Poland | T3 | |
| CN102650115B | China | B | |
| JP5960443B2 | Japan | B2 |
Numbers
- Publication, DOCDB
- 2492396
- Publication, EPODOC
- PL2492396T
- Application
- 1515
- Application, DOCDB
- 11001515
- Application, EPODOC
- PL20110001515T
Titles2
- English
- Street construction machine with a material deflector
- Polish
- Maszyna do budowy dróg z wyrzutnikiem materiału
Classification
- CPC, 3
- E01C19/48
- B60R19/54
- E01B27/00
- IPC, 1
- E01C19 48