US20080110330A1 - Connector for Filling Concrete Formworks - Google Patents

Connector for Filling Concrete Formworks Download PDF

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Publication number
US20080110330A1
US20080110330A1 US11/855,783 US85578307A US2008110330A1 US 20080110330 A1 US20080110330 A1 US 20080110330A1 US 85578307 A US85578307 A US 85578307A US 2008110330 A1 US2008110330 A1 US 2008110330A1
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US
United States
Prior art keywords
piston
tube
formwork
connector
stopper
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
Application number
US11/855,783
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English (en)
Inventor
Andreas Reymann
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.)
RATEC LLC
Original Assignee
RATEC LLC
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 RATEC LLC filed Critical RATEC LLC
Assigned to RATEC LLC reassignment RATEC LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REYMANN, ANDREAS
Publication of US20080110330A1 publication Critical patent/US20080110330A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • 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
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • 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
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0472—Details of connection of the hose to the formwork, e.g. inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/246—Combination of a sliding valve and a lift valve

Definitions

  • formwork systems which comprise two formwork elements running parallel.
  • various methods are known. For example, conventional concrete is introduced from above into the formwork, so that the concrete falls in free fall into the interior of the formwork. The concrete then fills the formwork until it reaches the top edge of the formwork elements. Such filling is preferably performed for vertically oriented building walls.
  • the concrete is pumped into the formwork through filling connections in a side formwork element.
  • the filling connections are usually located in the bottom area of the formwork.
  • a connecting port on which a filling tube can be connected in a pressure tight way, is provided on the formwork, so that the concrete can be pumped with pressure through the port into the formwork.
  • the filling tube is removed from the connecting port. If the concrete has hardened both in the formwork and also in the filling connection, then removal of the formwork is very difficult because an interfering hardened concrete plug remains.
  • the present invention provides an improved connector for filling concrete formworks.
  • a connector in accordance with the invention for pouring concrete into a formwork comprises a piston tube and a filling port tube which is connected to the piston tube.
  • the piston tube and the filling port tube together form, essentially, a V-shaped filling connector.
  • the piston tube of the filling connector is arranged flush with the formwork at one end of the piston tube.
  • the piston tube includes a movable stopper piston, which has an end wall oriented in the direction of the formwork and which is moved within the interior of the piston tube by a control unit.
  • the stopper piston can be moved in the piston tube so that its end wall closes flush with the formwork on which the piston tube is arranged.
  • the filling port tube is fixed in the area of the formwork at an acute angle to the wall of the piston tube.
  • the connection between the piston tube and the filling port tube is provided such that concrete, which is introduced into the filling port tube, flows into the piston tube in order to be led finally into the formwork.
  • the stopper piston is moved in the direction of the formwork.
  • the concrete in the piston tube is pressed into the formwork until the end wall of the stopper piston forms a flush seal with the formwork.
  • no concrete remains in the piston tube of the filling connector. Therefore, after the concrete is dried, no plug is formed on the formwork wall which would prevent removal of the formwork.
  • a concrete formwork filling connector includes a stopper piston which closes off the filling port tube with its side wall when the stopper piston forms a smooth seal with its end wall with the formwork. In this position, the end wall of the stopper piston is essentially flush with the end of the piston tube of the filling connector.
  • the piston tube either stands on the formwork element of the formwork or projects so far into the formwork element of the formwork until it is flush with the inside surface of the formwork element.
  • the end position of the stopper piston is also to be fixed in the piston tube as well as the cross section of the opening in the formwork.
  • the stopper piston reaches, in its end position, past the end of the piston tube of the connector.
  • the opening cross section in the formwork is adapted to the inner cross section of the piston tube or to the outer cross section of the piston tube.
  • the stopper piston if the stopper piston is to be moved within the piston tube from its starting position in the direction towards the formwork, then the stopper piston extends with its side wall advancing increasingly into the connection point between the filling port tube and the piston tube, so that the size or cross section of a passage formed at the connection between the piston tube and filling port tube is reduced.
  • the flow of concrete into the formwork can be controlled to provide a predetermined amount or dose.
  • the stopper piston can be moved so far in the direction towards the formwork that it completely closes the connection passage cross section or size between the filling port tube and the piston tube. Further inflow of concrete into the piston tube may then be prevented.
  • the filling connector is simultaneously blocked flush with the formwork element, which is formed in the formwork, after stopping the flow.
  • a residual concrete connecting piece also called a plug
  • the filling connector according to the invention has proven to be very advantageous. Due to the formwork filling provided by the stopper piston to be flush with the inside surface of the formwork element, only barely visible traces of the connector are to be detected on the hardened concrete.
  • a connector for filling concrete formwork is provided with a stopper piston movable past the free end of the piston tube, in order to intentionally leave, for example, a shape in the concrete body to be created.
  • a stopper piston movable past the free end of the piston tube, in order to intentionally leave, for example, a shape in the concrete body to be created.
  • the end wall of the stopper piston has an exchangeable end surface that comprises, for example, a punch or a die plate, on which indicia, such as for example, the production date of the concrete part, can be stamped.
  • Other information can also be stamped into the concrete part, such as the name of the manufacturing company or the composition of the concrete.
  • a control unit for moving the stopper piston within the piston tube comprising a spindle which can be driven rotatably either by hand, in that a hand crank is attached at the free end of the spindle, or by a motor, in that such motor is connected directly or via gearing to the spindle.
  • the movement of the stopper piston in the piston tube can then be automated, so that the flow rate of concrete can be regulated automatically.
  • Several filling connectors in one formwork can be controlled centrally.
  • adjustments of the position of the stopper piston can also be regulated by means of a central control, for example, in the form of software.
  • catches can be provided on the spindle, which can be fixed such that further rotation past the catch is not possible.
  • the filling port tube of the filling connector has a coupling on its free end.
  • the coupling is used for connecting concrete feed lines, or hoses, through which concrete is pumped to the filling connector.
  • these couplings are provided as quick connect couplings in order to allow quick coupling and decoupling of the feed lines.
  • the quick connect couplings can be exchangeable, so that they always correspond to coupling pieces of various manufacturers and different systems. In this way, the filling connector can be adapted to the available quick connect coupling of the appropriate feed line.
  • a coupling which is constructed as a quarter turn fastener, has proven to be advantageous whereby the feed line can be coupled very easily to the filling connector.
  • the filling connector according to the invention has the additional advantage that it is possible, due to the closure of the filling port and the quick removal of the feed line from the filling connector through the quick connect coupling, to clean the filling port tube after filling the formwork.
  • the filling port tube is flushed with water until all of the concrete in the filling port tube is removed.
  • This process is usually performed when the non hardened fresh concrete has converted into young concrete, that is, it has hardened far enough that, for example, the formwork can be removed, but the young concrete has not hardened completely.
  • the cleaning of the filling connector is simple, the handling of the connector as a whole is significantly improved.
  • the stopper piston must seal the filling port during the cleaning to the extent that the injected water does not reach into the formwork.
  • a seal is provided between the stopper piston and the piston tube, so that no concrete can flow between the stopper piston and the piston tube, which would lead to damage to the filling connector.
  • the seal between the stopper piston and the piston tube is constructed as an amorphous seal.
  • the amorphous seal can be realized by providing a grease film. The grease film also supports the sliding movement of the piston in the piston tube, so that the piston is supported and seizing is prevented.
  • the sealing grease film it is guaranteed that the concrete flowing through the piston tube does not remain adhered to the inner wall of the piston tube.
  • the present invention also provides a filling connector which is detachable from or fixed to the formwork.
  • the filling connector is flanged to the formwork.
  • a flange is provided at the end of the piston tube which is guided or inserted into a receptacle in the formwork, so that the filling connector is held securely and reliably on the formwork.
  • the filling connector may also be welded to the formwork, which represents a durable, reliable, and robust connection.
  • the proper connection of the filling connector and formwork can be realized in advance in the manufacturing plant, just like the fixing of the end position of the stopper piston. For on site assembly, no additional work is necessary. Readjustment of the motion path of the stopper piston can usually be eliminated. Thus, only the feed line must be connected to the filling port tube.
  • the piston tube and the stopper piston have a cylindrical construction.
  • tube piston tube and filling port tube
  • piston stopper piston
  • tube and piston piston
  • both the tubes and also the piston may have nearly arbitrary cross sections. However, they must be fitted to each other. It is also possible to use square cross section tubes, in which a square stopper piston can move, for example.
  • At least part of the filling port tube preferably can have a cylindrical cross section, so that the feed lines usually constructed with a round cross section can be connected in a simple way and without additional adapters.
  • FIGS. 1A through 1C are cutaway perspective views illustrating a concrete filling connector in accordance with the invention.
  • FIGS. 2A through 2C are longitudinal central section views of the connector shown in FIGS. 1A through 1C with the stopper piston in various positions corresponding to the positions in FIGS. 1A through 1C , respectively;
  • FIG. 3 is a cutaway perspective view of an alternate embodiment of the invention.
  • FIGS. 4A and 4B are cutaway perspective views illustrating a modified stopper piston of the filling connector including an exchangeable end face insert for the stopper piston.
  • FIGS. 1A through 1C show a filling connector 1 , which is connected rigidly to a formwork 2 .
  • the essentially V shaped filling connector 1 comprises a piston tube 3 and a filling port tube 4 fixed to the piston tube so that a one piece outer structure of the filling connector 1 is formed.
  • the piston tube 3 is welded to a formwork element 5 of the formwork 2 , so that a durable connection between the piston tube and formwork is formed.
  • the piston tube 3 is positioned at an angle of ninety degrees, that is, perpendicular to the formwork 2 .
  • the piston tube 3 is connected with the formwork element 5 such that the open end 3 a of the piston tube 3 is flush with and forms a flush seal with the inside surface 5 a of the formwork element 5 .
  • the formwork element 5 has an opening 6 , whose diameter corresponds to the outer diameter of the piston tube 3 .
  • the filling port tube 4 is fixed to the piston tube 3 at an acute angle adjacent to or in the area of the formwork 2 .
  • the filling port tube 4 is arranged at the side of the piston tube 3 at an angle of about thirty degrees.
  • a stopper piston 7 is supported so that it can move in the piston tube 3 .
  • the stopper piston 7 can be moved in a linear motion from the rear end 8 of the piston tube 3 in the direction towards the formwork 2 , that is, in the direction of the piston tube end 3 a .
  • the linear motion of the stopper piston 7 is realized by a control unit 10 comprising a rotatable spindle 9 .
  • the spindle 9 is connected on one end to a hand crank 11 , with which an operator can activate the spindle by hand.
  • a motor can also be attached directly or via gearing to the free end of the spindle 9 , so that the spindle 9 is turned by such motor.
  • a spindle holder 12 At the free end 8 of the piston tube 3 there is a spindle holder 12 , at which a stop 13 is formed.
  • the stop 13 is part of an adjustment device 14 , which also includes two nuts 15 a , 15 b that are threaded onto the spindle 9 and act as locknuts opposite each other, in order to fix their positions on the spindle.
  • the spindle 9 is supported in and cooperates with the spindle holder 12 so that it can rotate, and advance and retract the stopper piston 7 .
  • the spindle 9 is turned until the nut 15 a lying opposite the piston tube 3 engages the stop 13 . In this way, the motion path of the spindle 9 and thus the motion path of the stopper piston 7 in the piston tube 3 may be limited.
  • the end position of the stopper piston 7 , FIG. 1C relative to the formwork 2 can be fixed in a simple and uncomplicated way by positioning the nuts 15 a , 15 b on the spindle 9
  • the filling port tube 4 comprises on its free end a coupling 16 constructed as a quick connect coupling, to which a concrete feed line or hose, not shown, can be attached for introducing flowable concrete into the filling connector 1 .
  • FIG. 1A illustrates the stopper piston 7 arranged in its starting position on the free end 8 of the piston tube 3 .
  • Flow of concrete through the filling port tube 4 is introduced into the formwork 2 in an unimpaired way through the piston tube 3 and the opening 6 of the formwork element 5 .
  • the direction of flow of concrete is represented by the arrows 17 in the filling port tube 4 .
  • a passage or opening 18 formed at the intersection of tubes 3 and 4 is at a maximum size in the position of stopper piston 7 in FIG. 1A whereby the greatest possible concrete flow is guaranteed.
  • FIG. 1B illustrates the stopper piston 7 moved in the direction towards the formwork 2 .
  • the opening 18 formed between the piston tube 3 and the filling port tube 4 is partially closed by the stopper piston 7 .
  • Stopper piston sidewall 19 projects into the opening 18 , so that concrete flow is reduced. Because the stopper piston 7 is longer than the greatest extent of the opening 18 , flow of concrete in the piston tube 3 in the direction of the free end 8 can be prevented, but concrete may still be forced into the formwork 2 .
  • FIG. 1C illustrates the completion of the process of filling the formwork 2 .
  • the stopper piston 7 has been moved in the piston tube 3 so far forward that its end wall 20 forms a flush seal with the inside surface 5 a of the formwork element 5 .
  • the passage or opening 18 between the piston tube 3 and the filling port tube 4 is now completely closed so that concrete cannot flow through the filling connector 1 into the formwork 2 .
  • any concrete remaining in the piston tube 3 is pressed into the formwork 2 .
  • FIG. 1C also illustrates that the nut 15 a presses against or is in contact with the stop 13 of the adjustment device 14 .
  • the motion path of the stopper piston 7 is limited and its end position is defined uniquely so that the end wall 20 of the stopper piston 7 forms a flush seal with the inside surface 5 a of the formwork element 5 .
  • a continuous concrete surface flush with the formwork is created within the formwork element 5 . Therefore, in the concrete part to be produced, there are no visible traces of the stopper piston 7 or the point of introduction of the concrete.
  • FIGS. 2A through 2C also illustrate that the piston tube 3 forms a seal that is flush with the inside surface 5 a of the formwork element 5 .
  • the opening 6 of the formwork element 5 has a diameter that corresponds substantially to the outer diameter of the piston tube 3 .
  • the piston tube 3 is connected essentially at a right angle to the formwork element 5 and, preferably, welded to the formwork element. It is also important that the filling port tube 4 be fixed to the piston tube 3 adjacent to or in the area of the formwork 2 .
  • the filling port tube 4 is arranged so that, between the side of the filling port tube 4 close to the formwork 5 and the end 3 a of the piston tube 3 there is enough projecting length of the piston tube 3 so that the piston tube 3 can be pushed flush with the formwork into the opening 6 of the formwork element 5 and a seam or weld bead can be formed on the piston tube 3 between the outside surface of the formwork element 5 and the filling port tube 4 .
  • FIG. 2C illustrates that the adjustment device 14 can be adjusted such that the end wall 20 of the stopper piston 7 projects somewhat past the end 3 a of the piston tube 3 and the formwork surface 5 a , so that the stopper piston 7 is pressed into still fluid concrete in the formwork 2 .
  • This may be useful under certain conditions, for example, when indicia related to the concrete filling is to be intentionally provided in the final concrete part.
  • FIG. 3 shows an embodiment of the filling connector 1 , which is not welded to the formwork 2 . Instead, a flange 21 is provided on the end of the piston tube 3 close to the formwork and is held in a receptacle or connector holder 22 on the outside of the formwork element 5 .
  • the holder 22 which is realized in the example shown by spaced apart pins 23 , guarantees a reliable and precisely fitting positioning of the filling connector 1 on the formwork 2 .
  • the holder 22 including the pins 23 and the flange 21 must be suitably adapted to each other.
  • the end of the piston tube 3 projects beyond the flange 21 .
  • the opening 6 of the formwork element 5 may be slightly larger than the outer diameter of the piston tube 3 .
  • the piston tube 3 is inserted into the opening 6 of the formwork element 5 which produces good fixing and exact positioning of the filling connector 1 on the formwork 2 .
  • the length of the piston tube 3 which projects past the flange 21 corresponds in this case to the thickness of the formwork element 5 .
  • the flange 21 may be arranged flush with the end of the piston tube 3 .
  • the inner diameter of the piston tube 3 then corresponds exactly to the diameter of the opening 6 of the formwork element 5 .
  • This disadvantage is prevented by exact fixing of the filling connector 1 on the formwork 2 , especially by robust and precise attachment of the flange 21 in the holder or receptacle 22 .
  • FIGS. 4A And 4B show a filling connector 1 from the inside surface 5 a of the formwork element 5 .
  • the filling connector 1 includes a stopper piston 7 that has a modified wall 20 constructed, for example, to receive a die plate or punch 24
  • the die plate 24 can also include, as in the shown example in FIG. 4B , a number code in addition to the manufacturing date, for example. In this way, it is possible to characterize the final concrete part to be created, for example, with suitable indicia, such as the production year or the production date.
  • the die plate 24 is preferably disposed on piston 7 by insertion into a recess in the end wall 20 and is arranged so that it is flush with an edge 25 of the end wall 20 , FIG. 4B . Through such an arrangement, the die plate 24 does not effect or require adjustment of the stopper piston 7 , because the outer dimensions of the piston do not change.
  • the filling connector 1 described hereinbefore is believed to be understood by those of ordinary skill in the art based on the foregoing description and viewing the accompanying drawings. Conventional engineering materials and practices may be used to fabricate the connector 1 and carry out its intended use.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
US11/855,783 2006-11-14 2007-09-14 Connector for Filling Concrete Formworks Abandoned US20080110330A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006053552A DE102006053552B3 (de) 2006-11-14 2006-11-14 Füllanschluss für eine Schalung zum Einfüllen von Beton
DE102006053552.9 2006-11-14

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US20080110330A1 true US20080110330A1 (en) 2008-05-15

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ID=38885266

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Application Number Title Priority Date Filing Date
US11/855,783 Abandoned US20080110330A1 (en) 2006-11-14 2007-09-14 Connector for Filling Concrete Formworks

Country Status (7)

Country Link
US (1) US20080110330A1 (de)
EP (1) EP1923527A1 (de)
CA (1) CA2610544A1 (de)
DE (1) DE102006053552B3 (de)
MX (1) MX2007014244A (de)
RU (1) RU2007141762A (de)
ZA (1) ZA200708875B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100164140A1 (en) * 2007-04-23 2010-07-01 Andreas Reymann Battery formwork for the vertical manufacturing of planar precast concrete parts
WO2012110526A1 (en) 2011-02-15 2012-08-23 Universiteit Gent Automatic connection valve for concrete pumping
ITMI20130377A1 (it) * 2013-03-12 2014-09-13 Cifa Spa Valvola per casseforme e casseforme dotate di detta valvola
WO2016112332A1 (en) * 2015-01-08 2016-07-14 Marion Mixers, Inc. Zero pocket valve
CN110344596A (zh) * 2019-08-08 2019-10-18 中国矿业大学 一种防反气的增强型气动混凝土输送系统
CN111395765A (zh) * 2020-03-30 2020-07-10 南京工程学院 自带封堵功能装配式混凝土结构注浆转接头及其施工方法

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Publication number Priority date Publication date Assignee Title
AT507554B1 (de) 2008-12-22 2010-06-15 Betonwerk Rieder Gmbh Schalung zur vertikalen herstellung von flächigen betonfertigteilen
NL1037267C2 (nl) 2009-09-10 2011-03-14 Romein Beton B V Afsluitbaar aansluitstuk voor een mal en een mal voorzien van een afsluitbaar aansluitstuk.
DE102011007689A1 (de) * 2011-04-19 2012-10-25 Putzmeister Engineering Gmbh Anordnung und Verfahren zum Einbringen von Dickstoffmaterial in eine Schalung sowie Steuerarmatur hierfür
CN107060342B (zh) * 2017-05-17 2019-04-09 武汉盛大长青建材有限公司 一种用于混凝土浇筑车软管的安全定位调整装置
CN108724455B (zh) * 2018-08-07 2023-12-19 浙江巨龙管业科技有限公司 可调式预应力钢筒混凝土管模具
CN112681610A (zh) * 2020-12-24 2021-04-20 上海建工二建集团有限公司 异型混凝土柱的施工方法

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US2089149A (en) * 1934-08-17 1937-08-03 Chain Belt Co Plastic concrete induction apparatus for tunnel forms
US3682575A (en) * 1970-12-10 1972-08-08 Karl Guddal Concrete pump
US4959003A (en) * 1987-02-23 1990-09-25 Kvm Industrimaskiner A/S Device for die-casting of concrete goods such as block stones in a cellular mould

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DE684422C (de) * 1936-06-30 1939-11-28 Gerhard Rost Einrichtung zum Einpumpen von Beton in unzugaengliche Raeume
DE3732894A1 (de) * 1987-08-26 1989-03-09 Gebhardt & Koenig Gesteins Und Verfahren und vorrichtung zur herstellung gewebearmierter ausbaustuetzen oder schlanker tragender bauglieder
JP2859546B2 (ja) * 1994-12-12 1999-02-17 株式会社金澤製作所 切換弁
JP2859547B2 (ja) * 1994-12-12 1999-02-17 株式会社金澤製作所 切換弁
JPH112339A (ja) * 1997-06-11 1999-01-06 Shimizu Corp コンクリート打設配管用のバルブ
DE10034040A1 (de) * 2000-07-13 2002-03-14 Zueblin Ag Betonverteiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2089149A (en) * 1934-08-17 1937-08-03 Chain Belt Co Plastic concrete induction apparatus for tunnel forms
US3682575A (en) * 1970-12-10 1972-08-08 Karl Guddal Concrete pump
US4959003A (en) * 1987-02-23 1990-09-25 Kvm Industrimaskiner A/S Device for die-casting of concrete goods such as block stones in a cellular mould

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100164140A1 (en) * 2007-04-23 2010-07-01 Andreas Reymann Battery formwork for the vertical manufacturing of planar precast concrete parts
WO2012110526A1 (en) 2011-02-15 2012-08-23 Universiteit Gent Automatic connection valve for concrete pumping
ITMI20130377A1 (it) * 2013-03-12 2014-09-13 Cifa Spa Valvola per casseforme e casseforme dotate di detta valvola
WO2014141083A2 (en) 2013-03-12 2014-09-18 Cifa Spa Valve for formworks and formworks equipped with said valve
WO2014141083A3 (en) * 2013-03-12 2015-07-02 Cifa Spa Valve for formworks and formworks equipped with said valve
WO2016112332A1 (en) * 2015-01-08 2016-07-14 Marion Mixers, Inc. Zero pocket valve
CN110344596A (zh) * 2019-08-08 2019-10-18 中国矿业大学 一种防反气的增强型气动混凝土输送系统
CN111395765A (zh) * 2020-03-30 2020-07-10 南京工程学院 自带封堵功能装配式混凝土结构注浆转接头及其施工方法

Also Published As

Publication number Publication date
DE102006053552B3 (de) 2008-02-07
MX2007014244A (es) 2009-02-11
CA2610544A1 (en) 2008-05-14
RU2007141762A (ru) 2009-05-20
ZA200708875B (en) 2008-10-29
EP1923527A1 (de) 2008-05-21

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