EP1211354A2 - Verfahren zur Reinigung von Steinschüttungen - Google Patents
Verfahren zur Reinigung von Steinschüttungen Download PDFInfo
- Publication number
- EP1211354A2 EP1211354A2 EP01250423A EP01250423A EP1211354A2 EP 1211354 A2 EP1211354 A2 EP 1211354A2 EP 01250423 A EP01250423 A EP 01250423A EP 01250423 A EP01250423 A EP 01250423A EP 1211354 A2 EP1211354 A2 EP 1211354A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stones
- suction
- boiler
- pipe
- suction pipe
- 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
- 239000004575 stone Substances 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004140 cleaning Methods 0.000 title claims abstract description 17
- 238000011109 contamination Methods 0.000 claims abstract description 5
- 238000001739 density measurement Methods 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 abstract description 2
- 239000000356 contaminant Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002250 progressing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
- E01B27/08—Renewing or cleaning the ballast in situ, with or without concurrent work on the track the track having been taken-up
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/02—Removing or re-contouring ballast
- E01B2203/025—Suction
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/04—Cleaning or reconditioning ballast or ground beneath
- E01B2203/042—Cleaning or reconditioning ballast or ground beneath in situ, e.g. vacuum-cleaners
Definitions
- the invention is based on the knowledge that a Separation of substances of different densities as well of stones with high volume of particles like Dense but comparatively small volume the physics of thin-current production can be achieved can.
- a stone is promoted here or an object due to the local (along the longitudinal extent of the suction pipe) acting pressure difference. Due to a high flow velocity the object (stone, dirt particles or object) carried away and flies into the intake manifold. The associated buoyancy the higher the free cross section, the higher is in the intake manifold, i.e. the higher the air flow is in the intake manifold.
- the stones behave as dynamic Variable area group with vertical density distribution within the variable area group. Stones that in the upper area of the variable area group (due to inertia) be carried up into one Low density area (few stones) with the result that the buoyancy forces due to the increasing free cross section become smaller. Therefore, the Stones falling down again. Falling stones get thereby in an area with more stones and consequently relatively high density. This makes it deeper in this lying area the buoyancy forces due to the smaller free cross section again higher, so that stones in turn are carried up there etc. The result is a constant circulation of the stones the float group instead.
- the Suction opening brought directly over the stone bed is and by means of a controllable suction pump the air flow is increased until the desired float group at the desired height of the suction pipe with the suction opening raised.
- a controllable and / or adjustable throttle valve can be used, for example, via a controllable and / or adjustable throttle valve.
- one control of the suction pump, for example a fan, according to the literature reference DE 38 37 907 C2 take place, the setpoint of the control loop adjustable, preferably continuously, is.
- the invention is a very simple in-situ cleaning process created, with the stones on Clean the place of installation, without any intermediate storage and put it back in the same place.
- a route is cleaned in that laterally progressing the intake of contaminated Stones and storage of the cleaned stones performed becomes.
- This is considerably more effective than the ex situ Working method (on-site or off-site), because everyone There is no need to transport stones.
- the cleaning process can also arbitrarily interrupted and resumed without any static limitation the resilience of the trail takes place overall.
- Eventually, through the dynamic processes within the float group a very effective cleaning achieved, and without the use of chemicals or similar. It finally becomes fundamental no water needed either. As a result thus achieving a remarkable environmental friendliness.
- the method according to the invention considerably less expensive than prior art processes of technology feasible.
- the repetition is expedient because dirt leaves the float group (as intended) and thus creates a free internal cross section. In order to maintain the desired height of the float group, this can be reduced again to the value to be set for the desired equilibrium by additionally taking up stones (with dirt).
- the time period t1 can be in the range from 1 to 60 s.
- the time period t2 can be in the range from 5 to 600 s.
- the time period t3 can be in the range from 1 to 60 s and is preferably equal to the time period tl.
- the air flow through the intake manifold can be in the range from 5000 to 80,000 m 3 / h with an internal intake manifold diameter of 100 to 1000 mm. These values are suitable to effectively clean stone beds carrying rails in particular.
- the stones typically have a weight in the range of 0.02 to 5 kg, preferably 0.05 to 1 or 0.5 kg.
- the invention also teaches the use of an invention Process for cleaning bed stones in railways, cleaning without Lifting or removing rail elements and / or Carrying elements of the rails are carried out. Sucking in Stones should only be at a maximum depth the difference "height of the bed of stones" minus "height the lower edge of the support elements ". In stone beds of Wegetechnik show the Stones are usually of a substantially uniform size (based on volume or weight). typically, are more than 90% (based on volume or weight the stones within a range of ⁇ 80%, or ⁇ 50%, the mean size of the bed, such as brought in.
- the invention further teaches the use of a Suction excavators with a suction pump, one to the suction pump connected boiler and one connected to the boiler Intake pipe with suction opening in an inventive Method or an inventive Application of the procedure.
- the invention finally teaches a suction dredger Use in a method according to the invention a suction pump, one connected to the suction pump Boiler and with one connected to the boiler Suction pipe with suction opening, the one from the suction pump generated air flow adjustable and / or controllable is.
- a density sensor can be set up, density values be measured and read out in the floating area.
- a Electronics can measure density values as a function of Evaluate time and with no longer changing Density values a control signal to control electronics the suction pump or an actuator of an air damper to reduce the amount of air flow.
- a Air valve can remove the suction pipe from the suction pump or the boiler are separated with the result that the Air flow is reduced or switched off.
- Such an air damper can of course also for one manual operation / control with non-automated Operation set up.
- Figure 1 you can see a trained as a truck Suction excavator 1. This comprises a suction pump 2, one Boiler 3, and a suction pipe 4 with a suction opening 5. The intake air is again through a fine filter 6 left out in the area. Recognizes in the figure one, like light dirt already from the surface the stone bed 7 can be suctioned off. The Stone fill 7 is lowered under a Railroad set up.
- the Suction port 5 is again for after a period of time t2 a period of time t3 directly over the bed of stones 7 brought, with more stones 8 and dirt 9 are sucked in (Fig. 2d). Levels c) to d) (Fig. 2c to 2d) are repeated until none other stones 8 and / or dirt 9 more in the suction pipe 4 are entrained (Fig. 2e), in the embodiment with a repeat. Finally the air flow is switched off, whereby the cleaned stones 8 from the suction pipe 4 into the stone bed 7 fall into it and ultimately a cleaned one Form stone fill 7.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning In General (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Description
- Fig. 1:
- einen für ein erfindungsgemäßes Verfahren geeigneter Saugbagger,
- Fig. 2a-f:
- die Durchführung des erfindungsgemäßen Verfahrens.
Claims (17)
- Verfahren zur Reinigung von Steinschüttungen (7) von leichten und feinteiligen Verschmutzungen (9), wobei eine Saugöffnung (5) eines Saugbaggers (1), welcher einen Kessel (3), eine an den Kessel (3) angeschlossene Saugpumpe (2), und ein an den Kessel (3) angeschlossenes Saugrohr (4) mit Saugöffnung (5) aufweist, über der Steinschüttung (7) so angesetzt wird, daß durch das Saugrohr (4) die Steine (8) der Steinschüttung (7) mit den leichten und feinteiligen Verschmutzungen (9) in das Saugrohr (4) aufgesaugt werden, wobei die leichten und feinteiligen Verschmutzungen (9) in den Kessel (3) abgesaugt werden, wobei der Luftmengenstrom in dem Saugrohr (4) mit der Maßgabe eingestellt ist, daß die Steine (8) in einem Schwebebereich des Saugrohres (4) in Schwebe gehalten werden und wobei nach einer definierten Zeitspanne der Luftmengenstrom verringert und so die gereinigten Steine (8) in den Entnahmeort der Steinschüttung (7) wieder abgelegt werden.
- Verfahren nach Anspruch 1, wobei die Saugpumpe (2) mit konstantem Luftmengenstrom betrieben wird.
- Verfahren nach Anspruch 1 oder 2, wobei das Saugrohr (4) über eine Länge von zumindest 1 m, vorzugsweise 2 m, gemessen ab der Saugöffnung, vertikal ausgerichtet ist.
- Verfahren nach einem der Ansprüche 1 bis 3, mit den folgenden Verfahrensstufen:a) die Saugpumpe (2) wird aktiviert,b) die Saugöffnung (5) wird unmittelbar über die Steinschüttung (7) gebracht, wobei sich die Luftströmungsgeschwindigkeit im Bereich der Saugöffnung (5) erhöht und Steine (8) sowie Verschmutzungen (9) mitgerissen und in das Saugrohr (4) angesaugt werden,c) die Saugöffnung (5) wird nach einer definierten Zeitspanne t1 von der Steinschüttung (7) angehoben, wobei Verschmutzungen (9) in den Kessel abgesaugt und Steine (8) bis zur Einstellung eines Gleichgewichtszustandes zwischen der Gewichtskraft der Steine (8) und der durch den Luftmengenstrom auf die Steine (8) wirkenden Auftriebskräfte in das Saugrohr (4) hinein angehoben werden,d) die Saugöffnung (5) wird nach einer Zeitspanne t2 wieder für eine Zeitspanne t3 unmittelbar über die Steinschüttung (7) gebracht, wobei weitere Steine (8) sowie Verschmutzungen (9) angesaugt werden,e) die Stufen c) bis d) werden sooft wiederholt, bis keine weiteren Steine (8) und/oder Verschmutzungen (9) mehr in das Saugrohr (4) mitgerissen werden.
- Verfahren nach Anspruch 4, wobei die Zeitspanne t1 im Bereich von 1 bis 60 s beträgt.
- Verfahren nach Anspruch 4 oder 5, wobei die Zeitspanne t2 im Bereich von 5 bis 600 s beträgt.
- Verfahren nach einem der Ansprüche 4 bis 6, wobei die Zeitspanne t3 im Bereich von 1 bis 60 s beträgt und vorzugsweise gleich der Zeitspanne t1 ist.
- Verfahren nach einem der Ansprüche 1 bis 7, wobei der Luftmengenstrom durch das Saugrohr (4) im Bereich von 5000 bis 80000 m3/h bei einem Saugrohrinnendurchmesser von 100 bis 1000 mm beträgt.
- Verfahren nach einem der Ansprüche 1 bis 8, wobei die Steine (8) ein Gewicht im Bereich von 0,02 bis 5 kg, vorzugsweise von 0,05 bis 0,5 kg, aufweisen.
- Verfahren nach einem der Ansprüche 1 bis 9, wobei der Luftmengenstrom durch Ansteuerung der Saugpumpe (2) einstellbar und vorwählbar ist.
- Verfahren nach einem der Ansprüche 1 bis 10, wobei ein Sensor zur Dichtemessung im Schwebebereich des Saugrohres (4) eingerichtet ist und Dichtemessungen durchgeführt werden, und wobei nach Einlaufen der gemessenen Dichtewerte in einen konstanten Wert die Steine (8) abgelegt werden.
- Verwendung eines Verfahrens nach einem der Ansprüche 1 bis 11 zur Reinigung von Steinschüttungsbetten in Schienenwegen, wobei die Reinigung ohne Anheben oder Entfernen von Schienenelementen und/oder Tragelementen der Schienen erfolgt.
- Verwendung nach Anspruch 12, wobei ein Ansaugen von Steinen (8) bis einer Tiefe von maximal der Differenz Höhe der Steinschüttung (7) minus Höhe der Unterkante der Tragelemente durchgeführt wird.
- Verwendung eines Saugbaggers (1) mit einer Saugpumpe (2), einem an die Saugpumpe (2) angeschlossenen Kessel (3) und einem an den Kessel (3) angeschlossenen Saugrohr (4) mit Saugöffnung (5) in einem Verfahren nach einem der Ansprüche 1 bis 11.
- Saugbagger (1) zur Verwendung in einem Verfahren nach einem der Ansprüche 1 bis 11 mit einer Saugpumpe (2), einem an die Saugpumpe (2) angeschlossenen Kessel (3) und mit einem an den Kessel (3) angeschlossenen Saugrohr (4) mit Saugöffnung (5), wobei der von der Saugpumpe (2) erzeugte Luftmengenstrom einstell- und ansteuerbar ist.
- Saugbagger (1) nach Anspruch 15, wobei in einem Schwebebereich des Saugrohres (4) ein Dichtesensor eingerichtet ist, wobei Dichtewerte im Schwebebereich gemessen und ausgelesen werden.
- Saugbagger (1) nach Anspruch 16, wobei eine Meßelektronik die Dichtewerte als Funktion der Zeit auswertet und bei sich nicht mehr verändernden Dichtewerten ein Steuersignal an eine Steuerelektronik der Saugpumpe (2) oder ein Stellelement einer Luftklappe zur Reduktion der Luftstrommenge ausgibt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10059729 | 2000-11-30 | ||
| DE10059729A DE10059729A1 (de) | 2000-11-30 | 2000-11-30 | Verfahren zur Reinigung von Steinschüttungen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1211354A2 true EP1211354A2 (de) | 2002-06-05 |
| EP1211354A3 EP1211354A3 (de) | 2003-10-29 |
| EP1211354B1 EP1211354B1 (de) | 2006-09-06 |
Family
ID=7665413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01250423A Expired - Lifetime EP1211354B1 (de) | 2000-11-30 | 2001-11-30 | Verfahren zur Reinigung von Steinschüttungen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1211354B1 (de) |
| AT (1) | ATE338850T1 (de) |
| DE (2) | DE10059729A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015024558A1 (de) * | 2013-08-22 | 2015-02-26 | Reschwitzer Saugbagger Produktions Gmbh | Saugbagger zur pneumatischen aufnahme von sauggut |
| DE102015105836B3 (de) * | 2015-04-16 | 2016-03-10 | Reschwitzer Saugbagger Produktions Gmbh | Saugbagger mit Strömungsumkehr sowie Verfahren zu dessen Steuerung |
| CN106087833A (zh) * | 2016-08-03 | 2016-11-09 | 中山市易路美道路养护科技有限公司 | 道路环保吸尘清理设备 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3837907C2 (de) | 1988-11-04 | 1990-10-31 | Schoerling Gmbh & Co Waggonbau, 3000 Hannover, De |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2025543A (en) * | 1932-11-08 | 1935-12-24 | Railway Maintenance Corp | Apparatus for cleaning ballast |
| US3326298A (en) * | 1964-12-10 | 1967-06-20 | Speno International | Ballast cleaner |
| FR1484830A (fr) * | 1966-05-07 | 1967-06-16 | Dégarnisseuse-regarnisseuse légère par aspiration pour ballast de chemin de fer | |
| DE2217975C3 (de) * | 1972-04-14 | 1980-08-21 | Schoerling Gmbh & Co Waggonbau, 3000 Hannover | An einem Fahrzeug, insbesondere Schienenfahrzeug, angeordnete Einrichtung zum Reinigen von Schotterbetten, Gleisschwellen u.dgl. einer Gleisanlage |
| DE3318756C2 (de) * | 1983-05-24 | 1994-12-08 | Schneider Walter Gmbh Co Kg | Fahrbare Einrichtung zum Aufnehmen von Abfällen, insbesondere aus Schotterbetten einer Gleisanlage |
| EP0337048B1 (de) * | 1988-04-13 | 1990-10-03 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Gleisfahrbare Maschine zum Reinigen eines Gleisoberbaues mit Saug-Einrichtung |
| EP0603149B2 (de) * | 1992-12-16 | 1999-04-07 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Saugmaschine |
| DE29508588U1 (de) * | 1995-05-29 | 1995-08-31 | System Hydraulik GmbH, 64807 Dieburg | Gleisbett-Reinigungsvorrichtung |
| DE19622236A1 (de) * | 1995-09-29 | 1997-04-03 | Wiebe Hermann Grundstueck | Schienengebundenes Fahrzeug zum Reinigen eines Gleisoberbaus |
| DE19739430C1 (de) * | 1997-09-09 | 1999-02-11 | Helmut Wachter | Verfahren sowie Reinigungseinrichtung für Tennisplätze |
-
2000
- 2000-11-30 DE DE10059729A patent/DE10059729A1/de not_active Ceased
-
2001
- 2001-11-30 AT AT01250423T patent/ATE338850T1/de active
- 2001-11-30 DE DE50110929T patent/DE50110929D1/de not_active Expired - Lifetime
- 2001-11-30 EP EP01250423A patent/EP1211354B1/de not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3837907C2 (de) | 1988-11-04 | 1990-10-31 | Schoerling Gmbh & Co Waggonbau, 3000 Hannover, De |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015024558A1 (de) * | 2013-08-22 | 2015-02-26 | Reschwitzer Saugbagger Produktions Gmbh | Saugbagger zur pneumatischen aufnahme von sauggut |
| DE102015105836B3 (de) * | 2015-04-16 | 2016-03-10 | Reschwitzer Saugbagger Produktions Gmbh | Saugbagger mit Strömungsumkehr sowie Verfahren zu dessen Steuerung |
| WO2016166021A1 (de) | 2015-04-16 | 2016-10-20 | Reschwitzer Saugbagger Produktions Gmbh | Saugbagger mit strömungsumkehr sowie verfahren zu dessen steuerung |
| US10640938B2 (en) | 2015-04-16 | 2020-05-05 | Reschwitzer Saugbagger Produktions Gmbh | Suction excavator with flow reversal and method for controlling same |
| CN106087833A (zh) * | 2016-08-03 | 2016-11-09 | 中山市易路美道路养护科技有限公司 | 道路环保吸尘清理设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10059729A1 (de) | 2002-06-13 |
| DE50110929D1 (de) | 2006-10-19 |
| EP1211354B1 (de) | 2006-09-06 |
| EP1211354A3 (de) | 2003-10-29 |
| ATE338850T1 (de) | 2006-09-15 |
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