EP0534954A1 - Procede et dispositif de fabrication d'elements de beton vibre. - Google Patents
Procede et dispositif de fabrication d'elements de beton vibre.Info
- Publication number
- EP0534954A1 EP0534954A1 EP90910154A EP90910154A EP0534954A1 EP 0534954 A1 EP0534954 A1 EP 0534954A1 EP 90910154 A EP90910154 A EP 90910154A EP 90910154 A EP90910154 A EP 90910154A EP 0534954 A1 EP0534954 A1 EP 0534954A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mould
- mould table
- hydraulic cylinders
- vibrated
- base
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
Definitions
- the present invention relates to a method and a device for making vibrated concrete elements, preferably building elements, comprising the steps of mounting a mould on a mould table which in operation is horizontally oriented; arranging reinforcement steel, insulation, cast- in fittings, adjusting members etc. in the mould; filling the mould with concrete; and vibrating the mould table and the mould.
- a base supports the mould table, and a vibrator is connectible to the mould table and the base.
- the invention relates to the making of insulated facing elements in the size 4x10 m and weighing about 40 t.
- the concrete is usually vibrated in the mould by means of pokers which are immersed manually in the concrete. This method is not only irrational; it is also annoying because of the noise made by the pokers which oscillate at a fre ⁇ quency of about 10 kHz.
- EP-A2-0,183,682 discloses a method for vibrating con- crete.
- the mould walls which are in con ⁇ tact with the fresh concrete are caused to make a simul ⁇ taneous and synchronised oscillating motion which causes shearing motions in the fresh concrete.
- extremely thin concrete structures can be pro ⁇ quizzed.
- the vibration is carried out by means of a camshaft device which is connected to the mould walls.
- This patent specification thus is directed to the manufacture of lightweight structures and therefore is not applicable to the manufacture of heavy building elements, such as the above-mentioned facing elements.
- This prior art mechanical vibrator cannot vibrate heavy elements.
- the object of the present invention is to provide a method and a device for making vibrated concrete elements which can have a high weight and be provided with an em ⁇ bedded insulation.
- a further object of the invention is to provide a method and a device which give a concrete element, the concrete being homogeneous and without voids through the entire element in the making of both massive and insulated concrete elements.
- One more object of the invention is to provide a method and a device for making vibrated concrete elements, by means of which the vibration of the concrete can be ef ⁇ fected in a comparatively silent manner.
- a still further object of the invention is to provide a device in accordance with that stated above, which can be applied to most of the existing mould tables that are intended for the production of massive or insulated walls or bases of concrete. Many mould tables are already equip ⁇ ped with hydraulic cylinders for raising the mould table when lifting out the elements. At a relatively moderate cost, it will be possible to supplement existing hydraulic assemblies with the vibrator according to the present invention.
- these objects are a- chieved by a method as stated above, which is charac- terised in that said mould table is vibrated but in the horizontal plane in one or two directions, that said moul table is vibrated in the frequency range below the audibl 3 range, and that said mould table is vibrated by means of at least one pair of cooperating hydraulic cylinders, the frequency of vibration being controlled by a control de ⁇ vice which is connected to the hydraulic cylinders.
- a device for carrying out the method and as stated above is characterised according to the invention in that the vibrator comprises at least one pair of cooperating hydraulic cylinders, the two hydraulic cylinders included in each pair being aligned with one another and directed towards or away from one another, the pair or pairs of cooperating cylinders being attached to said mould table and adapted to releasably engage said base, or being attached to said base and adapted to releasably engage said mould table, and a control device being connected to each pair of hydraulic cylinders for alternately increas ⁇ ing the pressure in one hydraulic cylinder and lowering the pressure in the other hydraulic cylinder.
- Figs 1 - 4 are schematic, perspective views of the device according to the invention, with no mould for better clarity, one pair of cooperating hydraulic cylinders being alterna ⁇ tively positioned.
- Fig. 1 shows the hydraulic cylinders attached to the . base and directed towards one another and releasably en ⁇ gaging the circumferential portion of the mould table
- Fig. 2 shows the hydraulic cylinders attached to the circumferential portion of the mould table and directed away from one another and releasably engaging the base
- Fig. 3 shows the hydraulic cylinders attached to the base in the area of the central portion of the mould table and releasably engaging the central portion of the mould table
- Fig. 4 shows the hydraulic cylinders attached to the central portion of the mould table and releasably engaging the base in the area of the central portion of the mould table
- Fig. 5 is a top plan view of an application of the invention.
- Fig. 6 is a partial side view illustrating the appli ⁇ cation of the invention as shown in Fig. 5, the hydraulic cylinders being attached to the mould table and released from the base.
- Figs 1 - 4 the unfilled double arrows indicate the mould table direction of vibration in the horizontal plane.
- the smaller, filled single arrows indicate the direction of motion of the piston rods of the hydraulic cylinders for engaging the mould table and the base, respectively.
- the device according to the invention comprises a mould table 1 having a mount 2, the mould table being movably arranged on the mount, and friction elements 3 being mounted between the mould table and the mount.
- the mould table 1 is horizontally oriented and joined with a mould (not shown).
- the mount 2 is supported by a base 4, preferably a strong concrete floor or the like, in a recess 5 formed in the floor as shown in Figs 1 and 2, or above supporting struc ⁇ tures 6 of the floor.
- a pair of hydraulic cylinders 7 and 8 are arranged between the mould table 1 and the base 4. The hydraulic cylinders 7 and 8 are aligned with one another and cooperate so as to cause the mould table to vibrate, as will be explained in detail below.
- Figs 1 - 4 show only one pair of cooperating hydraulic cylinders 7 and 8, but when required it is of course possible to ar ⁇ range more than one pair of hydraulic cylinders between the mould table 1 and the base 4. Further the hydraulic cylinders are shown to be oriented in the longitudinal direction of the mould table, but if desired it is of course possible to orient the hydraulic cylinders in the transverse direction of the mould table or in both the longitudinal and transverse direction of the mould table.
- Fig. 1 showing the mould table 1 positioned in a recess 5 formed in the base 4.
- the hydraulic cylinders 7 and 8 are attached to the walls of the recess and are directed towards one another.
- their piston rods are extended in the direction of the filled arrows and are caused to engage the mould table.
- the piston rods are retracted in the hydraulic cylinders and thus released from the mould table.
- Fig. 2 distinguishes from Fig. 1 only in that the hydraulic cylinders 7 and 8 are attached to the mould table and directed away from one another, i.e. towards the recess walls which they are caused to engage during opera ⁇ tion, as the piston rods are extended in the direction of the arrows.
- Fig. 3 illustrates the hydraulic cylinders 7 and 8 attached to supporting structures 6 of the base 4 and di- rected towards one another and towards a mould table por ⁇ tion 9 which projects downwardly.
- the piston rods are extended in the direction of the arrows and are caused to engage the projecting portion 9.
- the piston rods are retracted in the hydraulic cylinders and thus released from the mould table.
- Fig. 4 differs from Fig. 3 only in that the hydraulic cylinders 7 and 8 are attached to the projecting portion 9 of the mould table 1 and directed away from one another, i.e. towards the base supporting structures 6 which they are caused to engage during operation, as the piston rods are extended in the direction of the arrows.
- the mould When making vibrated concrete elements, preferably flat building elements having a large surface, the mould is attached to the mould table the size of which can be 4x8 m. Subsequently, reinforcement steel, insulation, cast-in fittings, and adjusting members for windows and other openings are arranged in the mould and on the hori ⁇ zontal mould table, whereupon the mould is filled with concrete.
- the vibration of the mould table and the mould is ef- fected by causing the hydraulic cylinders to engage the mould table and the base, respectively, as described a- bove.
- the pair or pairs of cooperating hydraulic cylinders 7 and 8 are connected to a control device (not shown), a given pressure prevailing in the hydraulic cylinders.
- the mould table is caused to move in that hydraulic oil is pumped at a predetermined pressure and flow to the hydrau ⁇ lic cylinders via reversing valves included in the control device, such as on-off valves, proportioning valves or servo valves, depending on the required swiftness of the shifting operation.
- the solenoids of the reversing valves are shifted electronically and, thus, also the motions of the mould table are changed electronically, e.g. by means of a potentiometer.
- the amplitude and frequency of the mould table are changed, preferably by adjustment of the time (electronically), the pressure and/or flow (hy- draulically).
- the mould table is vibrated by alternately in ⁇ creasing the pressure in one hydraulic cylinder and lower ⁇ ing the pressure in the other hydraulic cylinder.
- the frequency and amplitude of the vibration are selected by the control device.
- a preferred frequency is in the range 0.5 - 5 Hz, i.e. far below the range audible to human beings.
- the optimal frequency has been found to be in the range 0.5 - 7.0 Hz, i.e. in the size of 100 - 400 strokes a minute for the hydraulic cylinders.
- the preferred amplitude is about ⁇ 10 mm.
- Figs 5 and 6 are a top plan view and a partial side view of an application of the present invention.
- the mould table 1 as well as its longitudinal beams 10 and the mount 2 are indicated by dash-dot lines.
- the mould table 1 is pivoted to the mount 2 by hinge means 11 permitting mould table motions in the horizontal plane in relation to the mount 2 which is fixedly attached to the base 4.
- the mould table can be pivoted about the hinge means 11 to a raised position for stripping the finished concrete element or to be serviced.
- the hydraulic cylinders 12 are connected both to the mould table 1 and to the mount 2 and, like the hinge means 11, permit mould table motions in relation to the mount.
- a substantially U-shaped supporting structure 6 is attached to the base 4 by bolt joints 13. Moreover, the supporting structure 6 is, via inclined beams 14, fixedly connected to the mount 2.
- the supporting structure 6 is generally designed as a box girder with end walls 15 ex ⁇ tending above the box girder, see especially Fig. 6.
- the hydraulic cylinders 7 and 8 are attached to the mould table projecting portion 9 and directed away from one another, as schematically shown in Fig. 4.
- the projecting portion 9 is indi- cated by dash-dot lines, but in this Figure the mould table has been left out for better clarity.
- the piston rods of the hydraulic cylinders 7 and 8 are extended away from the projecting portion 9 and en ⁇ gaged with the end walls 15 of the supporting structure 6, whereupon the mould table is vibrated in its longitudinal direction, as described above.
- the mould table slides on coacting pairs of the friction elements 3, one friction element in each pair being mounted on the mould table lower side and the other one on the mount 2 (not shown in Figs 5 and 6).
- one friction ele ⁇ ment is convex in cross-section and the other friction element complementarily concave in cross-section so that the friction elements jointly form a guide for the motions of the mould table.
- Figs 5 and 6 can, as is obvious to a person skil ⁇ led in the art in the light of what has been stated above, be applied to new constructions as well as to most ex ⁇ isting mould tables for making vibrated concrete elements.
- the hy ⁇ draulic cylinders 7 and 8 of the vibrator can be asymmet- rically arranged in relation to the mould table.
- the present invention has been described to be particularly advantageous in the making of insulated concrete elements since the concrete is homogeneous and without voids throughout the concrete element.
- the invention is also advantageous when making massive concrete elements, inter alia owing to the comparatively low sound level in operation.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90910154T ATE125192T1 (de) | 1990-05-16 | 1990-05-16 | Verfahren und vorrichtung zum herstellen von bauteilen aus rüttelbeton. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8900855A SE465613B (sv) | 1989-03-10 | 1989-03-10 | Foerfarande och anordning foer tillverkning av vibrerade betongelement |
PCT/SE1990/000330 WO1991017874A1 (fr) | 1989-03-10 | 1990-05-16 | Procede et dispositif de fabrication d'elements de beton vibre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0534954A1 true EP0534954A1 (fr) | 1993-04-07 |
EP0534954B1 EP0534954B1 (fr) | 1995-07-19 |
Family
ID=20375305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90910154A Expired - Lifetime EP0534954B1 (fr) | 1989-03-10 | 1990-05-16 | Procede et dispositif de fabrication d'elements de beton vibre |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0534954B1 (fr) |
DE (1) | DE69021087T2 (fr) |
DK (1) | DK0534954T3 (fr) |
FI (1) | FI97454C (fr) |
NO (1) | NO180226C (fr) |
SE (1) | SE465613B (fr) |
WO (1) | WO1991017874A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4335944A1 (de) * | 1993-10-25 | 1995-04-27 | Ebawe Maschinenbau Gmbh | Verfahren und Rüttelvorrichtung zur Herstellung von plattenförmigen Betonfertigteilen |
US5606231A (en) * | 1993-12-04 | 1997-02-25 | Netter Gmbh | Vibrating table for masses to be compacted and a vibratory method of compaction for the compaction of concrete |
GB9806534D0 (en) * | 1998-03-27 | 1998-05-27 | Finlay Blockmaking Equipment L | Method and machine for producing concrete blocks |
GB9821274D0 (en) * | 1998-10-01 | 1998-11-25 | Gribole Meirion | A plastics moulding press |
DE102004009251B4 (de) | 2004-02-26 | 2006-05-24 | Hess Maschinenfabrik Gmbh & Co. Kg | Vibrator zum Beaufschlagen eines Gegenstandes in einer vorbestimmten Richtung und Vorrichtung zum Herstellen von Betonsteinen |
CN104029277B (zh) * | 2014-06-19 | 2016-08-24 | 福建群峰机械有限公司 | 一种砌块成型机敲击式振动台的固定架简易调整装置 |
CN104908144B (zh) * | 2015-06-19 | 2017-08-08 | 李铁军 | 一种浆料开浆机 |
CN108098980B (zh) * | 2017-12-28 | 2023-06-02 | 四川建筑职业技术学院 | 一种装配式建筑构件生产模具 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2700933A1 (de) * | 1977-01-12 | 1978-07-13 | Avermann Masch Bernard | Kipptisch, insbesondere fuer betonfertigteile |
FI64073C (fi) * | 1981-11-10 | 1983-10-10 | Partek Ab | Foerfarande foer gjutning av voluminoesa foeremaol av styv gjutmassa samt form foer genomfoerande av foerfarandet |
IE822428L (en) * | 1982-10-07 | 1984-04-07 | Attwell Ronald Leslie | Cement filled container for nuclear or toxic waste |
FI844686L (fi) * | 1984-11-29 | 1986-05-30 | Rakennusvalmiste Oy | Foerfarande foer komprimering av betong. |
-
1989
- 1989-03-10 SE SE8900855A patent/SE465613B/sv not_active Application Discontinuation
-
1990
- 1990-05-16 DK DK90910154.5T patent/DK0534954T3/da active
- 1990-05-16 DE DE69021087T patent/DE69021087T2/de not_active Expired - Fee Related
- 1990-05-16 WO PCT/SE1990/000330 patent/WO1991017874A1/fr active IP Right Grant
- 1990-05-16 EP EP90910154A patent/EP0534954B1/fr not_active Expired - Lifetime
-
1992
- 1992-11-09 NO NO924300A patent/NO180226C/no unknown
- 1992-11-13 FI FI925165A patent/FI97454C/fi not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9117874A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0534954B1 (fr) | 1995-07-19 |
NO924300D0 (no) | 1992-11-09 |
DE69021087D1 (de) | 1995-08-24 |
FI925165A0 (fi) | 1992-11-13 |
FI97454B (fi) | 1996-09-13 |
DE69021087T2 (de) | 1995-11-30 |
NO924300L (no) | 1992-11-16 |
FI97454C (fi) | 1996-12-27 |
SE8900855D0 (sv) | 1989-03-10 |
DK0534954T3 (da) | 1995-11-27 |
SE8900855L (sv) | 1990-09-11 |
WO1991017874A1 (fr) | 1991-11-28 |
NO180226C (no) | 1997-03-12 |
SE465613B (sv) | 1991-10-07 |
FI925165A (fi) | 1992-11-13 |
NO180226B (no) | 1996-12-02 |
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