EP0438837A2 - Dispositif de sablage pour l'intérieur d'un tuyau - Google Patents

Dispositif de sablage pour l'intérieur d'un tuyau Download PDF

Info

Publication number
EP0438837A2
EP0438837A2 EP90250272A EP90250272A EP0438837A2 EP 0438837 A2 EP0438837 A2 EP 0438837A2 EP 90250272 A EP90250272 A EP 90250272A EP 90250272 A EP90250272 A EP 90250272A EP 0438837 A2 EP0438837 A2 EP 0438837A2
Authority
EP
European Patent Office
Prior art keywords
blasting
lance
pipe
tube
blasted
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.)
Withdrawn
Application number
EP90250272A
Other languages
German (de)
English (en)
Other versions
EP0438837A3 (en
Inventor
Jürgen Schulz
Walter Müller
Jürgen Hinz
Friedrich Steenkamp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0438837A2 publication Critical patent/EP0438837A2/fr
Publication of EP0438837A3 publication Critical patent/EP0438837A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes

Definitions

  • the invention relates to a device for blasting the inner surface of a tube according to the preamble of the main claim.
  • a generic device for blasting the inner surface of a tube is known from DE-OS 25 38 793, in particular Figure 1.
  • the rotating blasting head which ejects the blasting material is fastened to a blasting tube and is arranged on a carriage together with the electric motor which rotates the blasting head.
  • This trolley with its four specially designed wheels can be moved within the pipe to be blasted. Before the blasting begins, this trolley is supported on a trolley, which is placed on rails in the immediate vicinity of the open end of the tube. At a distance from it, a movable carriage is arranged on the same rails, to which the end of the jet pipe is attached.
  • the blasting material is supplied via a hose which is connected on the one hand to the regeneration device and on the other hand to the supply end of the blasting tube.
  • the cable required to drive the electric motor is attached to the jet pipe in the form of hanging loops.
  • the pipe to be blasted is mounted horizontally and is supported on the one hand in a suction device enclosing the pipe and on the other hand on a stand arranged at a distance from it.
  • a disadvantage of this device is that the blasting material affects all unprotected parts, such as the chain drive for the blasting head and the bearing and connection points of the electric motor, and the system is only suitable for pipes of approximately the same length and diameter, in addition, the jet pipe is only supported at the end points, i.e. once in the area of the jet head and on the other hand on the movable carriage Grind the jet pipe as well as the entrained cable in the pipe while moving the jet head.
  • the holding device for the centrifugal tube has a rubber mat covering the inner cross section of the tube to be blasted. Since the blasting material flying away from the centrifugal wheel only covers a part of the inner circumference of the pipe to be blasted, the pipe must be rotated during the blasting. This system is not suitable for quick adaptation to different diameters of the pipes to be blasted, and the possible length range within which blasting is possible is severely restricted.
  • the drive of the centrifugal wheel is structurally very complex and a part of it is exposed to the blasting material flying around, so that these parts are subject to heavy wear.
  • the object of the invention is therefore to provide an improved device with which, while avoiding the disadvantages described, an internal blasting of pipes with an inside diameter of greater than or equal to 100 mm with different lengths and different inside diameters is possible in a simple and inexpensive manner and the intervals for exchanging the Wear parts are significantly extended.
  • a further task consists in constructively supplementing the device in such a way that it is officially imposed Soundproofing and occupational safety while blasting is taken into account.
  • the essential aspect of the device according to the invention can be seen in the fact that the proposed lifting and lowering trestles allow a quicker and easier adaptation to different pipe dimensions.
  • the axis position of the movable jet pipe is determined once, for. B. 1.5 m above the floor and the pipes to be blasted differently in size increased more or less so that in the blasting position the axis of the pipe to be blasted is aligned with the axis of the blasting pipe.
  • the adaptation to different lengths of the pipes to be blasted is carried out in such a way that pivotable pendulum supports supporting the beam pipe are arranged in the length range from the shortest to the longest pipe to be blasted are upright or swiveled away depending on the length of the pipe to be blasted.
  • the pivot axis of these pendulum supports lies in the vertical plane containing the jet pipe axis.
  • the jet pipe itself is arranged in a lance supporting the entire length of the jet pipe, which is advantageously designed in cross-section as a hat profile standing upside down.
  • This hat profile is particularly torsional and Rigid yet light in weight ⁇
  • the brim of the hat profile is used as a tread, whereby the pendulum supports have rollers in the form of flanged wheels ⁇
  • the lance is also supported within the pipe to be blasted by means of support means which are arranged along the length of the lance are.
  • the support means consists of at least one holding element which is attached to the underside of the lance and on which a roller is arranged.
  • the lance and thus the jet pipe can be supported on the inner surface of the pipe via this roller.
  • a supporting means is arranged on the lance directly at the end of the blasting head, with two further rollers lying in the horizontal diameter plane of the blasting tube being arranged in this supporting means.
  • These rollers are also rotatably mounted on holding elements arranged on the lance.
  • the holding elements are designed as interchangeable brackets with different degrees of strength, in the central region of which the guide rollers are detachably arranged. In order to keep the number of required stirrups within limits and to reduce the changeover for different inner diameters to a minimum, a certain deflection of the unsupported lance section is permitted following the blasting head.
  • the permitted deflection can be for a diameter range of the pipes to be blasted from 180 to 620 mm e.g. be a maximum of 60 mm. Within this range, only one set of stirrups is used.
  • the limitation of the deflection is an empirical value with regard to the quality of the blasted surface and is not readily transferable to other diameter ranges.
  • the lance is supported outside the pipes to be blasted via the already mentioned pendulum supports, the pendulum supports arranged in the travel area of the lance carriage being designed as pivotable double pendulum supports.
  • This has the advantage that you can optionally support the lance and, after driving through the lance carriage, the energy chain, which has a different profile.
  • the two arms of the pendulum supports are arranged in a V-shape with respect to one another, one arm being connected in an articulated manner to a cylinder which generates the pivoting movement.
  • the arrangement of a flexible energy chain instead of a cable has the advantage that the supply hose for the jet pipe and the other lines required for moving the lance carriage, for example, are guided cleanly and the lines are largely protected from damage by storing the flexible energy chain in a shaft under the floor are.
  • an elongated sound-absorbing hood is arranged in the blasting area, which is designed so that the longest pipe to be blasted is covered and the longitudinal plane of the hood lies below the upper edge of the fixed feed and drainage grates.
  • the pipe to be blasted can roll in laterally over the inclined feed grate to a stop arranged on the drain grate, brought into the blasting position by means of the jacks which can be raised and lowered and then close the hood again. After blasting, the trestles are lowered again and the pipe leaves the blasting area via the sloping grate.
  • the number of trestles arranged within the hood depends on the length of the pipes to be blasted, with at least two raisable and lowerable trestles being used for the shortest pipe to be blasted.
  • Swiveling pendulum supports are arranged in the spaces between the trestles, so that depending on the length of the pipes to be blasted, the lance section located outside the pipe can be supported.
  • the distances between the pendulum supports are chosen so that the maximum possible free cantilever arm of the lance is only 2.50 m.
  • the pendulum supports have a U-shaped free cross section perpendicular to the travel axis in the form of a web plate.
  • This web plate is welded between the two frame plates forming the pendulum support.
  • the end face of the upper half of the hood also has a slit-shaped opening, through which the lance system, including the support means arranged on the lance, can be moved in and out. When extended, the blasting head including the three-armed support means are located outside the hood.
  • the covering of a large inner diameter range of the pipes to be blasted makes it necessary to use blasting heads of different sizes with blasting horns of different lengths.
  • it is further developed to provide an assembly carriage which can be pushed in transversely into the travel range of the lance carriage.
  • the lance system including the jet head, is moved into an assembly position outside the hood area.
  • the assembly trolley which can be moved on castors, has one in the Moving area extending table with a height-adjustable mounting bracket on which the up to 50 kg heavy blasting head can be placed. After loosening the connection between the blasting head and the blasting tube, the assembly carriage is moved across and the replacement can be carried out.
  • the blasting usually takes place starting at the open end of the tube in the direction of the suction device. So that the start of the tube is automatically recognized when the hood is closed, a sensor is arranged on the jet pipe in the immediate vicinity of the connection to the jet head. When the blasting head is moved into the tube, the sensor recognizes the tube edge and the length of the blasting head is retracted by the length from the sensor to the blasting horns, so that the blasting begins directly at the beginning of the tube. So that this dimension always remains constant, the length of the different beam head sizes is the same.
  • the jet head is retracted into the start position in slow speed or crawl mode. In order to shorten the time required for this, the lance system is pre-positioned using the movable lance carriage.
  • a precondition for pre-positioning is that the lance carriage moves without slippage.
  • a drivable pinion is mounted on the lance carriage, which engages in a hanging rack attached to a carrier.
  • the hanging construction of the rack has the advantage that it is not contaminated by flying particles, which is known to lead to either premature wear or even jamming.
  • the upper half of the hood has a roller that can be raised and lowered to scan the diameter of the rolled-up pipe. This ensures that the set of brackets for the guide rollers selected for a certain inner diameter matches the actual tube inserted. Any a bracket that extends too far be prevented from moving further by the end face of the tube. If the bracket is accidentally chosen too small, the permissible deflection would be exceeded.
  • FIGS. 1a to 1d the essential elements of the jet device according to the invention are shown in a shortened side view or in a longitudinal section and in a top view.
  • the pipe 1 to be blasted is mounted on a plurality of prismatic blocks 2 (FIG. 7) which can be raised and lowered and is surrounded by a sound-absorbing, longitudinally divided hood 3, 4 (FIG. 7) during the blasting.
  • a blasting tube 5 (FIG. 4) is inserted, which is covered and supported over the entire length by a lance system 6 (FIG. 4).
  • the jet head 7 At the front end of the jet pipe 5 is the jet head 7, which has a rotating part 49 (FIG. 5).
  • the blasting material thrown out of the blasting head 7 is sucked off at the front end of the tube 1 in the already known manner that an opening and closable sleeve 63 encompasses the tube end and the blasting material is fed via a collecting tank 8 and a pipeline 9 connected to the regeneration unit 10.
  • the details of the regeneration unit 10 will not be discussed further here since they are not essential to the invention.
  • the processed or supplemented blasting material is pressed into a flexible hose 11 (FIG. 3), the hose 11 being guided in an energy chain 12 and being connected on the one hand to the regeneration unit 10 and on the other hand to the opposite end of the blasting pipe 5.
  • the coupling of the energy chain 12 with the jet pipe 5 is arranged on a lance carriage 13 which can be moved on rails 14, 15 (FIG. 3) parallel to the axial direction of the pipe 1 to be blasted.
  • 1a shows the position of the carriage 13 in the fully extended state and in dashed lines in the fully retracted state.
  • the lance system 6 supporting the jet pipe 5 is supported several times over the length.
  • FIG. 1a and 2b show detail A in FIG. 1a on an enlarged scale.
  • the support is attached to an angle bracket 26 and in the form of a pivotable V-shaped Double pendulum support 16 formed.
  • the longer arm 27 of the pendulum support 16 intercepts the lance system 6, while the shorter arm 28 carries the energy chain 12.
  • flanged wheels 29 are arranged on the open ends of the arms 27, 28.
  • the sheet metal web of the long arm 27 of the pendulum support 16 is U-shaped, so that the roller 31 supporting the lance system 6 in the tube 1 [FIG. 4) including the replaceable bracket 32 (Fig. 4) can pass through unhindered.
  • FIG. 3 shows the lance carriage 13, which can be moved on rails 14, 15 via wheels 33, 33 ', 34, 34'.
  • the drive takes place via an electric motor 35, on the shaft of which a pinion 36 is arranged.
  • This pinion 36 meshes with a rack 37, which is attached to a continuous support 38 hanging.
  • the carriage 13 is connected to the lance system 6 or to the energy chain 12 via three angle brackets 39, 40, 41, which are fastened to the carriage 13.
  • the energy chain 12 can be deposited on the floor 42 of a shaft 43 and, as shown in FIG. 1 a, follows the travel path of the lance carriage 13 in a semicircle.
  • FIG. 1a is the inner support arranged directly behind the coupling point between the jet head 7 and the lance system 6.
  • This support has three rollers 31, two of which lie in the horizontal and one in the vertical diameter plane of the jet pipe 5. These rollers 31 are for the smallest pipe 1 ′′ to be blasted as well as for larger to the largest to be blasted Pipe 1 'is connected to the lance system 6 by means of exchangeable brackets 32. By changing the bracket 32, the adaptation to the respective diameter of the pipe to be blasted takes place.
  • This arrangement with three rollers 31 secures the support of the heavy and cantilevered jet head 7 downward and additionally offers lateral guidance of the lance system 6.
  • the subsequent support means 66 for the internal support have only one roller 31 lying in the vertical diameter plane of the jet tube 5.
  • the jet pipe 5 is encompassed by the hat-shaped lower part of the lance system 6, the jet pipe 5 being pressed firmly into the lower part by a web 44 arranged on the upper part.
  • the two other energy supply lines 45, 46 which are arranged within the lance system 6 and have a circular cross section, relate on the one hand to the energy supply for the movement of the lance carriage 13 and on the other hand to the separate compressed air supply for the rotation of the jet head 7.
  • FIG. 5 shows the detail D of Figure 1c.
  • This illustration shows the jet head 7 in the removed state with its two horns 47, 48 standing at an angle, which are arranged on a rotatable part 49.
  • the rotation of this part 49 is symbolized by the arrow 50.
  • At the rear end there is a coupling 51 which connects the blasting head 7 to the blasting tube 5.
  • the compressed air supply required for the rotation 50 takes place via a separate coupling part to the driving air motor 52.
  • the assembly carriage 23 (FIG. 1 c) has a support frame 53 on which a platform 25 is arranged for the replacement of the jet head 7. This platform 25 can be raised and lowered via a rod 55 by means of a cylinder 54.
  • the previously uncoupled blasting head 7 is placed in two pickups 56, 57 fastened on the platform 25, one of which 57 being adjustable in the longitudinal direction 58. After retracting 24 of the assembly carriage 23, the blasting head 7 cannot use one here shown hoist be removed from the assembly cart. In this way, it is easy to replace damaged jet heads or jet heads of another dimension.
  • FIG. 6 shows, in a simplified form, the supply and removal of the pipes 1, 1 ', 1' 'to be blasted, the smallest 1' 'and the largest 1' to be blasted pipe and a medium size 1 being shown here.
  • the upper part 3 of the sound-absorbing hood is lifted off and the pipe rolls up to the fixed stop 59.
  • the pipe 1 is formed by the prismatic blocks 2 (FIG. 7) which can be raised and lowered , 1 ', 1' 'raised to the center of the jet, so that the axis of the tube 1, 1', 1 '' and the axis of the jet tube 5 are aligned.
  • the tube 1, 1 ', 1' ' Due to the prismatic shape of the jacks 2, the tube 1, 1 ', 1' 'continues to roll to the right when it is lifted until it has reached the central position. After blasting, the trestles 2 are lowered again and the tube 1, 1 ', 1' 'touches the sloping upper edge of the stop 59, so that it rolls with momentum out of the cabin after the upper part of the hood 3 again had been raised. The finished blasted tubes 1, 1 ', 1' 'can then be fed to the next processing station.
  • Figure 7 shows a section along the line FF in Fig. 1b.
  • the division plane is not horizontal, since, as has already been pointed out in FIG. 6, for reasons of simple transverse transport, the grids 64, 65 in and out are arranged at different heights in the hood 3, 4.
  • the trestles 2 are simultaneously pivoted by means of a continuous pull and push rod 60, which are connected to an actuating cylinder (not shown here), so that the desired lifting and lowering movement for the pipes 1, 1 ', 1'' results.
  • a contact roller 61 is arranged on the ceiling of the upper hood half 3 and is connected to a linkage 62 so that it can be lowered.
  • the contact roller 61 lowers and supplies a corresponding diameter display to the control panel, so that the nominal and actual value of the diameter of the rolled tube 1,1 ', 1' 'can be compared with each other. This ensures that the brackets 32 attached for the internal support of the lance system 6 match the actual pipe diameter and that a pipe rolled too small in diameter would not inadvertently damage the support means.
  • the associated inner tube diameters are additionally hammered in on the brackets 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Incineration Of Waste (AREA)
EP19900250272 1989-11-30 1990-10-24 Device for blasting the inside of a pipe Withdrawn EP0438837A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939888 1989-11-30
DE19893939888 DE3939888C1 (fr) 1989-11-30 1989-11-30

Publications (2)

Publication Number Publication Date
EP0438837A2 true EP0438837A2 (fr) 1991-07-31
EP0438837A3 EP0438837A3 (en) 1991-11-21

Family

ID=6394664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900250272 Withdrawn EP0438837A3 (en) 1989-11-30 1990-10-24 Device for blasting the inside of a pipe

Country Status (2)

Country Link
EP (1) EP0438837A3 (fr)
DE (1) DE3939888C1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713974A1 (fr) * 1993-12-22 1995-06-23 Snecma Dispositif de grenaillage de surfaces non accessibles par une canalisation droite.
WO2002011152A3 (fr) * 2000-07-31 2002-10-10 Florida Internat University Systeme et procede de decontamination et caracterisation integres
CN101036977B (zh) * 2007-05-21 2010-10-13 张景远 一种管道内壁电动抛丸除锈机
CN108177093A (zh) * 2017-12-28 2018-06-19 重庆广福科技有限公司 用于对内孔进行喷砂处理的机构
US10139040B2 (en) 2015-04-15 2018-11-27 Joe C. McQueen Apparatus and method for rotating cylindrical members

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020946B4 (de) * 2004-04-28 2014-10-02 Horst-Dieter Schlick Verfahren zum Innenstrahlen von Rohren
DE102005018852B4 (de) * 2005-04-22 2007-11-08 SLF Oberflächentechnik GmbH Vorrichtung zum Bearbeiten der inneren Oberfläche von rohrförmigen Bauteilen
DE102013107966B4 (de) * 2013-07-25 2016-03-24 Wheelabrator Group Gmbh Druckluftstrahlvorrichtung für das Innenstrahlen von Rohrabschnitten und Turmsegmenten

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124863A (en) * 1964-03-17 Drill pipe peening
DE7438399U (de) * 1975-04-24 Borsig Gmbh Vorrichtung zum Innenstrahlen von gebündelten Rohren
US2358557A (en) * 1942-06-26 1944-09-19 John G Boyd Blast cleaning device
US2538793A (en) * 1948-08-10 1951-01-23 George A Breon And Company Alkamine esters of cyclopentylalkylacetic acids
US2778164A (en) * 1955-10-20 1957-01-22 Combustion Eng Pipe cleaning apparatus with novel up-ending wheel
US2951319A (en) * 1957-07-01 1960-09-06 Floyd I Kornhaus Device for sand-blasting bores
CH382016A (de) * 1960-12-29 1964-09-15 Entrag Ag Vorrichtung zum Sandstrahlen der Innenfläche von Rohrleitungen
US3109262A (en) * 1962-07-18 1963-11-05 Jack W Weaver Pneumatic motor for sand blaster
GB1025489A (en) * 1964-03-23 1966-04-14 Vacu Blast Ltd Abrasive blasting apparatus for the cleaning of tubes
FR1458354A (fr) * 1965-08-25 1966-03-04 Procédé et dispositif pour la mise en état de récipients pour métaux en fusion
US3523391A (en) * 1967-03-13 1970-08-11 Intercontinental Mfg Co Inc Abrasive blast cleaning apparatus
US3835587A (en) * 1973-07-03 1974-09-17 W Hall Pipe cleaning apparatus and method
CH562663A5 (en) * 1973-09-19 1975-06-13 Darani Marco Abrasive machining of inside of hollow workpieces - using device producing jet blast carrying abrasive grit
SE7413891L (sv) * 1974-11-06 1976-05-07 Aplicator Ab Apparat for invendig ytbehandling av rorformade element
US3902276A (en) * 1974-12-03 1975-09-02 Harold F Jarvis Spin-blast apparatus
US4036173A (en) * 1975-07-21 1977-07-19 Nicklas Manfred E Internal coating and sandblasting bug for pipe
US4016681A (en) * 1975-12-11 1977-04-12 Wheelabrator-Frye, Inc. Surface treatment device for large diameter pipe sections
DE2802313A1 (de) * 1978-01-20 1979-07-26 Wheelabrator Berger Maschf Vorrichtung zur strahlreinigung der wandflaechen von rohren
ZA792125B (en) * 1978-05-23 1980-05-28 Slag Reduction Ingot moulds
DE3215995A1 (de) * 1981-05-01 1982-11-18 USS Engineers and Consultants, Inc., 15230 Pittsburgh, Pa. Rohraufweitervorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713974A1 (fr) * 1993-12-22 1995-06-23 Snecma Dispositif de grenaillage de surfaces non accessibles par une canalisation droite.
EP0659523A1 (fr) * 1993-12-22 1995-06-28 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Dispositif de grenaillage de surfaces non accessibles par une canalisation droite
US5499519A (en) * 1993-12-22 1996-03-19 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Device for shot-blasting surfaces inaccessible by a straight pipe
WO2002011152A3 (fr) * 2000-07-31 2002-10-10 Florida Internat University Systeme et procede de decontamination et caracterisation integres
CN101036977B (zh) * 2007-05-21 2010-10-13 张景远 一种管道内壁电动抛丸除锈机
US10139040B2 (en) 2015-04-15 2018-11-27 Joe C. McQueen Apparatus and method for rotating cylindrical members
CN108177093A (zh) * 2017-12-28 2018-06-19 重庆广福科技有限公司 用于对内孔进行喷砂处理的机构

Also Published As

Publication number Publication date
EP0438837A3 (en) 1991-11-21
DE3939888C1 (fr) 1991-01-10

Similar Documents

Publication Publication Date Title
DE60023974T2 (de) Reifenwechselvorrichtung für Nutzfahrzeuge
DE2922701C2 (de) Vorrichtung zum mechanischen Entzundern von warmgewalztem Metallband
DE69219429T2 (de) Bodenflächenstrahlgerät
DE2012045C3 (fr)
DE2752817B1 (de) Vorrichtung zum Auf- oder Abspulen eines strangfoermigen Wickelgutes
DE3015547A1 (de) Rollapparat fuer bahnfoermiges gut
DE3939888C1 (fr)
DE19938705A1 (de) Entzunderungsvorrichtung für ein stranggegossenes Metallband
DE1906741A1 (de) Automatische Schweissvorrichtung zur Verbindung von Betonpfeilerabschnitten mit Stahlstirnplatten
DE4417126C2 (de) Kanalreinigungsfahrzeug
CH685059A5 (de) Fahrbare Gleisstopfmaschine mit quer- und höhenverstellbaren Stopfaggregat-Einheiten.
DE7537193U (de) Drehvorrichtung
DE4143123A1 (de) Kehrmaschine
CH640449A5 (de) Vorrichtung zum verschweissen von rohrschuessen und nachfolgenden schraubenwendelfoermigen aufschweissen eines halbprofilbandes auf die rohrschuesse.
DE19743070A1 (de) Tragwalzen-Wickelmaschine
EP0668228A2 (fr) Installation pour établir un raccordement de bandes
DE2710961A1 (de) Wenigstens halbselbsttaetige fuellanlage fuer bauchfaesser
AT390022B (de) Maschine zum gleichzeitigen schweissen an beiden seiten einer rippe
EP0473932B1 (fr) Dispositif pour la fragmentation du copeau intérieur des tuyaux soudés longitudinalement
DE3315775C2 (fr)
DE3813162A1 (de) Maschine zur herstellung einer palettenpackung od. dgl.
DE3106234C2 (fr)
DE3318693A1 (de) Vorrichtung zum strahlen von flaechen grossflaechiger werkstuecke ausserhalb geschlossener strahlkabinen
AT406060B (de) Maschine zum absaugen von schotter
DD146834A5 (de) Gleisbearbeitungsmaschine mit raeumwalzen-anordnung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19911217

17Q First examination report despatched

Effective date: 19930521

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19930913