EP0771593B1 - Verfahren und Vorrichtung zum Freilegen und Reinigen von Litzen aus Stahldrähten - Google Patents
Verfahren und Vorrichtung zum Freilegen und Reinigen von Litzen aus Stahldrähten Download PDFInfo
- Publication number
- EP0771593B1 EP0771593B1 EP96116542A EP96116542A EP0771593B1 EP 0771593 B1 EP0771593 B1 EP 0771593B1 EP 96116542 A EP96116542 A EP 96116542A EP 96116542 A EP96116542 A EP 96116542A EP 0771593 B1 EP0771593 B1 EP 0771593B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- lance
- cleaning
- sheathing
- sealing element
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004140 cleaning Methods 0.000 title claims description 14
- 229910000831 Steel Inorganic materials 0.000 title claims description 12
- 239000010959 steel Substances 0.000 title claims description 12
- 238000011010 flushing procedure Methods 0.000 claims abstract description 12
- 210000004907 gland Anatomy 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 25
- 239000004519 grease Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000005260 corrosion Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- -1 Fat Chemical class 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Definitions
- the invention relates to a method and an apparatus for exposing and Cleaning length-limited sections of strands made of steel wires by a corrosion protection compound, in particular grease, surrounded and inclusive these are enclosed by a tubular covering.
- the invention has for its object a simple and economical way to expose and clean the initially mentioned, enclosed by a tubular sheath specify.
- this object is achieved by a method with the features of claim 1 solved.
- a useful device for performing the method is in the claim 2 specified.
- the invention is based on the finding that it is about the channels between to effectively clean the outer wires and the central wire by rinsing can, is required, the strand on its outer circumference tight and sealed enclose and use a flushing liquid under high pressure.
- This is achieved according to the invention in that the tubular Sheath freed strand of a sealing element made of elastically deformable Material tightly enclosed in a gland and under the influence of a high-pressure washing liquid slowly and steadily through this Sealing element is pulled through.
- a device suitable for carrying out this method consists of a tubular lance that has a connection for a pressure line for one end has a washing-up liquid and at the opposite end a sealing element which under elastic pressure against the outer circumference of the strand and through then the strand can be pulled in the longitudinal direction.
- FIG. 1 A section of a to be treated according to the invention
- Steel wire strand 1 a so-called "fat strand”
- Fig. 2 A section of a to be treated according to the invention
- the strand 2 consists of seven steel wires 3, namely one central wire 3a running in the longitudinal axis of the strand, which of the six outer wires 3b tight helically is enclosed.
- the strand 2 itself is one tubular casing 4, e.g. a plastic tube, surround.
- the gusset between the central wire 3a and the Outer wires 3b form inner channels 5 and the outer ones Gusset between the outer wires and the sheath 4 outer Channels 6.
- Both the inner channels 5 and the outer ones Channels 6 are coated with an anti-corrosion compound, e.g. Fat, backfilled.
- an anti-corrosion compound e.g. Fat
- a portion of a Strand 1 shows the actual strand 2 over the length L. already freed from the sheathing 4.
- a strand could for example as a tension member for an earth or Rock anchors are used, in which the section of the Length L as a composite section of the tension member in one Compression body made of hardening material is embedded.
- Strand of any adherent fat over this length is required, the wrapping 4 over a further distance To remove Delta l, which is about 50 mm.
- To remove the casing 4 must first be cut; this can be achieved by attaching a cutting tool, e.g. one Knives, but also by applying heat, e.g. through an electrical heating wire through which the wrapping 4 is melted.
- wrapping 4 consists of a plastic tube that the strand 2 with Distance surrounds, it is easily possible pull the relevant section from the strand, which then however is still covered by the anti-corrosion compound.
- the method according to the invention is used to carry out a tubular lance, the essential parts of which are shown in FIG. 3 are shown.
- the lance 7 consists of several Pipe sections 7a, 7b, etc., in a manner known per se are tightly connected by screw connections 8. By combining sections 7a, 7b etc. the same or the length of the lance can also be varied 7 to match the length L of the strand 2 to be treated.
- the lance 7 has a connection 9 for one at one end Detergent line; at the other end is also about the Screw connection 8 already described, a sealing element 10 connected.
- the sealing element 10 is in Fig. 5 on a larger scale and Longitudinal section shown. It consists of an inner Sealing part 11 and an outer sealing part 12 which are tubular trained and telescopically displaceable against each other are. Between the - outer - end of the inner sealing part 11 and a stop 13 at the - outer - end of the outer Sealing part 12 are sealing rings 14 which pass through telescopic displacement of the inner sealing part 11 with respect to the outer sealing part 12 under axial compression pressure set and thus to the sealing system on one in the lance 7 inserted strand 2 can be brought.
- the method according to the invention can be carried out will be explained with reference to FIG. 4.
- the length of the lance must be the length L of the correspond to the exposed section of the strand 2. It is it makes sense just after plugging in the front one
- the tensioning screw 15 into the sealing element 10 easy to put on. When inserting the wire 2 further then most of it will still be on the outside adhering anti-corrosion agent stripped.
- the clamping screw 15 is tightened; thereby the sealing rings 14 for tight contact with the Brought wire 2.
- the lance 7 is then in a container 22 hooked in, which is the result of rinsing Rinsing liquid.
- a flushing line 23 connected, e.g. about one Gun handle 24 an exposure to the interior of the Lance 7 with flushing liquid under pressure enables.
- Rinsing liquid is expediently water, which a suitable cleaning agent is added.
- the Rinsing liquid expediently has a temperature of about 100 degrees C.
- a cable winch 25 is expediently used to exert the tensile force (Fig. 6).
- To connect the winch 25 to the strand 1 serves a wedge housing 27 in which the - also - exposed end of the strand 2 anchored by a wedge 28 is.
- the wedge housing 27 with a shackle 29 Vortex 30 connected the rotation of the strand 1 around the own axis enables. Again over a shackle 31 then the rope 32 of the winch 25 connected to the an abutment block 33 sits.
- Adhesive grease can be loosened after loosening the clamping screw 15 be reinserted into the lance 7 in order to the corresponding final rinse process accordingly enable.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ropes Or Cables (AREA)
- Cleaning In General (AREA)
- Sealing Devices (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
- Fig. 1
- eine Seitenansicht einer zu behandelnden Litze,
- Fig. 2
- einen Querschnitt durch die Litze gemäß Fig. 1,
- Fig. 3
- eine Vorrichtung gemäß der Erfindung in Seitenansicht,
- Fig. 4
- eine schematische Darstellung der Vorrichtung gemäß Fig. 3 im Betrieb,
- Fig. 5
- das Dichtelement der Vorrichtung im Längsschnitt in größerem Maßstab sowie die
- Fig. 6 und 7
- schematische Darstellungen einer Seilwinde, um die Litze durch das Dichtelement hindurchzuziehen und einer Rückverankerung der Vorrichtung.
Claims (5)
- Verfahren zum Freilegen und Reinigen längenmäßig begrenzter Abschnitte von Litzen aus Stahldrähten, die von einer Korrosionsschutzmasse, insbesondere Fett, umgeben und einschließlich dieser von einer rohrförmigen Umhüllung umschlossen sind, dadurch gekennzeichnet, dass die von der Umhüllung (4) befreite Litze (2) unter Beaufschlagung eines den zu reinigenden Abschnitt der Litze umschließenden Raumes mit einer Spülflüssigkeit unter Druck durch ein die Litze (2) stopfbüchsenartig dicht umschließendes Dichtelement (10) aus elastischem Material hindurch aus dem mit der Spülflüssigkeit beaufschlagten Raum herausgezogen wird.
- Vorrichtung zum Durchführen des Verfahrens nach Anspruch 1, gekennzeichnet durch eine rohrförmige Lanze (7), in welche der von der Umhüllung (4) befreite Teil der Litze (2) einführbar ist, wobei die Lanze (7) an einem Ende einen Anschluß (9) für eine Spülleitung (23) und am anderen Ende ein stopfbüchsenartiges Dichtelement (10) aufweist, durch das die Litze (2) in axialer Richtung hindurchführbar ist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Lanze (7) aus mindestens zwei an den Enden miteinander dichtend verbindbaren Teilen (7a, 7b usw.) besteht.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Lanze (7) aus mindestens zwei teleskopartig gegeneinander verschiebbaren Teilen besteht.
- Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Lanze (7) eine durch ein Ventil (20) verschließbare Öffnung (19) aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19540392A DE19540392A1 (de) | 1995-10-30 | 1995-10-30 | Verfahren zum Freilegen und Reinigen von Bewehrungselementen in Form von Litzen aus Stahldrähten |
DE19540392 | 1995-10-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0771593A2 EP0771593A2 (de) | 1997-05-07 |
EP0771593A3 EP0771593A3 (de) | 1998-02-18 |
EP0771593B1 true EP0771593B1 (de) | 2001-12-12 |
Family
ID=7776166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96116542A Expired - Lifetime EP0771593B1 (de) | 1995-10-30 | 1996-10-16 | Verfahren und Vorrichtung zum Freilegen und Reinigen von Litzen aus Stahldrähten |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0771593B1 (de) |
AT (1) | ATE210509T1 (de) |
DE (2) | DE19540392A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100564757C (zh) * | 2006-09-21 | 2009-12-02 | 黄金伦 | 钢丝张拉终端器 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2926310B1 (fr) * | 2008-01-14 | 2010-01-15 | Rech S Et Realisations Remy | Procede et dispositif de maintenance notamment de nettoyage d'un ancrage de fil ou toron pour beton precontraint et ancrage adapte |
EP3156460A1 (de) | 2015-10-13 | 2017-04-19 | wertec GmbH | Korrosionsschutzmittel auf organischer basis für eine metallstruktur, insbesondere für spannstahl |
CN112604877A (zh) * | 2020-12-11 | 2021-04-06 | 张峻豪 | 一种施工用钢筋防锈处理装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3646748A (en) | 1970-03-24 | 1972-03-07 | Frederic A Lang | Tendons for prestressed concrete and process for making such tendons |
GB1466677A (en) * | 1974-02-19 | 1977-03-09 | Phido Co Ltd | Cable cleaning unit |
AU543452B2 (en) * | 1980-10-14 | 1985-04-18 | Paramec Engineering Limited | Improvements in or relating to the scouring of elongate material and apparatus therefor |
US4591390A (en) * | 1981-03-25 | 1986-05-27 | Shell Internationale Research Maatschappij B. V. | Cable cleaning system |
US5308406A (en) * | 1992-12-14 | 1994-05-03 | Joan Wallock | Cleaning of health care instruments |
DE4435744C2 (de) | 1994-10-06 | 1997-10-02 | Dyckerhoff & Widmann Ag | Verfahren zum Reinigen und Freilegen längenmäßig begrenzter Abschnitte von Litzen aus Stahldrähten |
-
1995
- 1995-10-30 DE DE19540392A patent/DE19540392A1/de not_active Withdrawn
-
1996
- 1996-10-16 AT AT96116542T patent/ATE210509T1/de active
- 1996-10-16 EP EP96116542A patent/EP0771593B1/de not_active Expired - Lifetime
- 1996-10-16 DE DE59608429T patent/DE59608429D1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100564757C (zh) * | 2006-09-21 | 2009-12-02 | 黄金伦 | 钢丝张拉终端器 |
Also Published As
Publication number | Publication date |
---|---|
DE19540392A1 (de) | 1997-05-07 |
EP0771593A3 (de) | 1998-02-18 |
EP0771593A2 (de) | 1997-05-07 |
DE59608429D1 (de) | 2002-01-24 |
ATE210509T1 (de) | 2001-12-15 |
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