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EP0008276A1 - Verfahren und Anlagen zur serienweisen Herstellung langer Betonteile, wie Pfähle - Google Patents

Verfahren und Anlagen zur serienweisen Herstellung langer Betonteile, wie Pfähle Download PDF

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Publication number
EP0008276A1
EP0008276A1 EP79430015A EP79430015A EP0008276A1 EP 0008276 A1 EP0008276 A1 EP 0008276A1 EP 79430015 A EP79430015 A EP 79430015A EP 79430015 A EP79430015 A EP 79430015A EP 0008276 A1 EP0008276 A1 EP 0008276A1
Authority
EP
European Patent Office
Prior art keywords
mold
bench
casting
drying room
workshop
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Withdrawn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
EP79430015A
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English (en)
French (fr)
Inventor
Honoré Attardi
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.)
L'entreprise Industrielle SA
Original Assignee
L'entreprise Industrielle SA
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 L'entreprise Industrielle SA filed Critical L'entreprise Industrielle SA
Publication of EP0008276A1 publication Critical patent/EP0008276A1/de
Withdrawn legal-status Critical Current

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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
    • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations

Definitions

  • the subject of the present invention is a method and installations for manufacturing elongated concrete elements such as poles, in particular poles intended to support electrical lines.
  • the elements are cast in molds which are reused after demolding and, in order to reduce the costs of equipment in molds, interest in minimizing the rotation period of each mold.
  • the mold In some existing installations, once the concrete has been poured, the mold remains in place. After 24 hours of drying, the sides are removed from the mold and the bottom of the mold is left in place for a further 24 hours, which requires two sets of mold bases. In other installations, once the mold is filled with concrete, it is transported in an oven to accelerate the setting of the concrete. Parboiling presents the risk of altering the mechanical characteristics of the posts. On the other hand, it consumes energy. However, in temperate climates, the ambient temperature is above 15 ° for a large part of the year and is enough to obtain in 24 hours, sufficient hardening to allow to unmold and lift the post out of the mold. It is not profitable to spend energy to get faster curing.
  • the objective of the present invention is to provide a method and facilities for manufacturing elongated concrete elements, which allow to ensure throughout the year, with minimum energy expenditure, a rotation of the molds every 24 hours by organizing the continuation of the stages of the manufacturing process and the mutual arrangement of the workstations to obtain maximum security, the elimination of expensive handling and the reduction of the physical efforts of the personnel.
  • each element is poured into a mold, it is left to harden in a drying room for approximately 24 hours, it is demoulded and the mold is reused in a new cycle lasting 24 hours.
  • the work shop of an installation according to the invention comprises a demoulding bench and a self-propelled casting bench, which are perpendicular to the longitudinal axis of the workshop and which move one behind the other on raceways parallel to said longitudinal axis.
  • the bottom of each of the casting and demolding benches is equipped with a train of rollers making it possible to move a mold axially along said bench and the floor of the drying room comprises a plurality of trains of rollers, which trains are arranged parallel to said ones.
  • demoulding and casting benches and are composed of rollers whose axes are parallel to the longitudinal axis of the workshop.
  • the bottom of the casting bench comprises vibrating supports and rollers which are retractable vertically so that the mold rests on said vibrating supports during casting.
  • An installation according to the invention comprises, in known manner, a concrete plant equipped with a mixer.
  • this mixer is located high on one side of the work shop and the work shop includes a first self-propelled skip, with a bottom opening, which moves parallel to the longitudinal tracks on which move the casting and demolding benches.
  • the casting bench comprises gantries supporting rails and a second self-propelled skip, with a bottom opening, which moves on these rails and the top of this second bucket is located at a level below that of the bottom of the first bucket.
  • the invention results in the industrial mass production of elongated concrete elements such as beams, beams or posts, in particular electrical posts intended to support the power lines, according to manufacturing cycles which are repeated every 24 hours. .
  • the manufacturing cycle is reached, with a stock of molds equal to that of daily production and, for a large part of the year, without energy expenditure. Even during the coldest periods, it is sufficient to heat for a few hours at night to prevent the temperature of the drying room from falling below 15 °.
  • the drying room can be an insulated room, with well insulated walls in order to reduce the exchange of calories through the walls.
  • the heat given off by the concrete during setting helps to keep the minimum temperature above 15 °. of the room where an additional energy saving.
  • the temperature of the drying room may vary for example between 15 ° and 30 ° depending on the shape of the posts and the quality of cement used.
  • An advantage of the installations according to the invention lies in the fact that they make it possible to reduce the daily production rate by half without disturbing the production cycle too much.
  • the first half day of work is occupied in demolding half of the molds and during the other half day, we pour in the molds which have been demolded. If we have a stock of mussels equal to normal daily production, we unmold those that were poured the day before and whose drying time is then 44 hours. If there is a mold stock equal to half a normal daily production, the drying time of each mold is reduced to around 20 hours. It is then sufficient to slightly increase the temperature of the drying room to allow demolding.
  • Another advantage of the installations according to the invention lies in the fact that the workstations are separate, in particular the demoulding bench and the casting bench, which makes it possible to use on each of these benches specialized teams who are familiar with their job.
  • the workstations of the two teams can be shifted by an hour or two, so that the casting team does not start work until the demolding team has already prepared a certain number of molds.
  • Another advantage lies in the fact that the storage area can be placed at the end of the work shop situated in the direction of advance of the two demolding and casting machines which follow each other in this order.
  • the storage area can be placed at the end of the work shop situated in the direction of advance of the two demolding and casting machines which follow each other in this order.
  • Figure 1 is a plan view of the entire installation;
  • Figure 2 is a cross section through II-II of Figure 1;
  • Figure 3 is a cross section on a larger scale along III-III of the casting bench and the demoulding bench.
  • FIG. 1 represents a plan view of the whole of a installation for the mass production of reinforced concrete posts intended to support electrical lines. It should be noted that this example is not limiting and the installation described could also be used to mass produce other elongated or slender reinforced concrete elements similar to posts, for example beams, beams, pillars, etc. .., this list is not exhaustive.
  • the hatched areas represent the roads and traffic areas of the vehicles serving the facility.
  • the installation comprises a work shop 1 which is a hall equipped with an overhead crane 2 which moves axially over the entire length of the shop.
  • the rails 3a, 3b of the overhead crane extend beyond one end of hall 1, to a park 4 for storing posts. Outside of hall 1, the rails 3a, 3b are supported by posts or gantries 5.
  • the workshop 1 has rolling tracks parallel to the longitudinal axis of the building, for example two rails 6a, 6b placed on floor. It comprises a casting bench 7 and a demoulding bench 8, both self-propelled, which both move on the rails 6a, 6b.
  • the demoulding bench and the storage yard 4 are arranged on the same side of the casting bench 7 and during a work station, the two benches move one behind the other, in the direction towards the storage yard 4, the demoulding bench 8 preceding the casting bench 7.
  • On one side of the work shop 1 is a conventional concrete plant comprising in particular a mixer 9, a silo 10, and a stock of aggregates 11, separated by partitions 13 and served by a scraper 12.
  • the mixer 9 is located high up and it pours into a chute which enters workshop 1 and which pours into a self-propelled bucket 14 which circulates on a raceway for example two rails fixed in height along the side wall of the building 1.
  • the bucket 14 has an opening bottom which allows it to pour into a second self-propelled bucket 15, also with opening bottom which is moves along the casting bench 7.
  • the installation includes a drying room 16, which is juxtaposed in workshop 1, on the side opposite to the concrete plant.
  • the walls of room 16 are thermally insulated by heat insulation and this room includes heating and regulation means which make it possible to control the temperature inside the room and to maintain in it, in any season, a minimum temperature of around 15 °, the temperature in the room being able to be significantly higher than this minimum and for example between 15 ° and 30 °.
  • the floor of the drying room has a series of roller trains 17. Each roller train has several rollers or rollers 18 whose axes of rotation are parallel to the longitudinal axis of the room 16 and the trains 17 are arranged parallel to the benches of work 7 and 8.
  • the number of roll trains 17 is at least equal to the number of molds, which is itself equal to the daily production, so that the drying room can contain all the production of a working day .
  • Each bench 7 and 8 also comprises a train of rollers or rollers 7a, 8a so that after having placed one or the other of the benches 7 or 8 in the extension of a mold located in the drying room, it is possible to move the mold axially on the rollers to pass it from the drying room to a bench or vice versa.
  • Each bench 7 and 8 has a motorized endless chain or any other equivalent translation device which allows the mussels to be pulled out of the drying room to bring them onto the bench then to push the mussels out of the bench to bring them back to the drying room.
  • An installation according to the invention further comprises a park 19 on which concrete irons intended to serve as reinforcements are stored and a workshop 20 comprising ironwork benches 21 on which the carcasses of reinforcements intended for each mold are prefabricated .
  • a handling gantry 22, moving on tracks 23a and 23b, serves the workshop 20 and extends under the rails 3a, 3b of the traveling crane 2, at an intermediate point between the workshop 1 and the park 4, so that when the overhead crane returns empty from the storage yard, where it has just placed a post after demolding, it takes a prefabricated carcass in passing and it transports it to the demolding bench 8 on which finds the mold that has just been removed from the mold.
  • the operators mounted on the demoulding machine 8 put it into operation and bring it into the extension of the first mold located at the end of the drying room opposite park No. 4, that is to say opposite of the first mold which was sunk the day before so for about 24 hours.
  • the operators then move the first mold axially by pulling it out of the drying room by means of the endless chain fitted to the demoulding bench.
  • the mold rolls on the rollers 18 of the drying room and on the train of rollers 8a located on the demoulding bench.
  • the molds have two cheeks or side walls articulated by their lower edge on the sides of the bottom. The operators tilt the two cheeks by means of jacks which equip the demoulding bench.
  • the operators move it axially again by pushing it by means of the drive chain of the demoulding bench.
  • the mold is returned to its original place in the drying room.
  • the operators of the demoulding bench 8 move it one step towards the park storage to bring it into alignment with a second mold located in the drying room and the same operating cycle is repeated for the second mold and for the following.
  • a certain time lag for example half an hour, or an hour
  • the operators of the casting bench 7 bring this bench in alignment with the first mold placed in the drying room. They transfer this first mold to the casting bench by pulling it by means of the translation device which equips the casting bench.
  • the rollers 7a of the casting bench are mounted on jacks which make it possible to retract them vertically and to rest the bottom of the mold on vibrating supports.
  • the bucket 14 is filled with concrete under the mixer 9 and the bucket 14 is moved to bring it above the end of the casting bench 7 where it is poured into the bucket 15.
  • the bucket 15 is handled by an operator of the casting bench which fills the mold with concrete at the same time as the mold is vibrated. After filling the mold, the operators of the bench 7 smooth the upper face. Then, they transfer the full mold to the drying room by pushing it by means of the translation device which equips the casting bench.
  • FIG 2 is a cross section along II-II of Figure 1.
  • the stock of aggregates 11 served by a movable arm 12a pivoting around a pivot 12b, which arm carries a return pulley 12c and a winch 12d for driving the cable 12e of the scraper 12 which is used to raise the aggregates towards the hopper lla.
  • the cement silo 10 and the mixer 9 All these elements making up a concrete plant are well known and it is unnecessary to describe them in detail.
  • the mixer 9 is located high up and pours into a inclined chute 9a.
  • the self-propelled skip 14 which moves on two rails 14a, 14b in the form of a slide carried by supports 24 fixed in console on the side of the building 1.
  • FIG. 2 represents the traveling crane 2 which equips the workshop 1 and which rolls on the rails 3a, 3b. It represents a longitudinal section of the casting bench 7 which is carried by wheels 7b rolling on two rails 6a, 6b placed on the floor of the building 11.
  • the casting bench 7 comprises gantries 25 which support two rails or two slides 26 on which rolls the second self-propelled skip 15 which is shown in its two extreme positions.
  • the bench 7 is equipped with an endless chain 31 which is driven by a geared motor group 32.
  • This chain carries a handling arm which allows the molds 27 to be pulled out of the drying room to bring them on the bench then push them back to the drying room.
  • the same motorized chain equips the demoulding bench.
  • FIG. 2 represents, in addition, the drying room 16 which is attached to the work shop 1.
  • the drying room 16 In order to reduce the consumption of calories necessary to maintain a minimum temperature in the room 16, the latter is preferably separated from the room 1, by an insulating partition comprising openings for the passage of molds provided with doors or curtains.
  • the height of the room 16 is reduced, of the order of 2.50 m in order to avoid having to maintain a large volume of air in temperature.
  • a cross section of a train of rollers 18 and a mold 27 being dried placed on these rollers.
  • Figure 3 is a cross section of the casting bench 7 and the demoulding bench 8 placed on the rails 6.
  • a mold 27 placed on the casting bench and two operators busy pouring concrete into the mold in means of the self-propelled skip with opening bottom 15.
  • FIG. 3 represents the motors 29 and 30 which equip the casting and demolding benches which are self-propelled.
  • rollers 7a and the vibrating supports 32a which equip the floor of the casting bench.
  • the rollers 7a can be moved vertically by means of jacks. As soon as an empty mold has been brought onto the bench, the rollers are retracted downwards, so that the bottom of the mold rests on the vibrating supports 32a during the casting.
  • the upper generatrices of the rollers 7a as well as the upper faces of the vibrating supports 32a are placed in an inclined plane whose slope is equal to the angle formed by the two upper and lower faces of the post, so that the upper face is horizontal.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Rod-Shaped Construction Members (AREA)
EP79430015A 1978-08-04 1979-08-01 Verfahren und Anlagen zur serienweisen Herstellung langer Betonteile, wie Pfähle Withdrawn EP0008276A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7823429A FR2432371A1 (fr) 1978-08-04 1978-08-04 Procedes et installations de fabrication en serie d'elements allonges en beton arme tels que des poteaux
FR7823429 1978-08-04

Publications (1)

Publication Number Publication Date
EP0008276A1 true EP0008276A1 (de) 1980-02-20

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ID=9211714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79430015A Withdrawn EP0008276A1 (de) 1978-08-04 1979-08-01 Verfahren und Anlagen zur serienweisen Herstellung langer Betonteile, wie Pfähle

Country Status (3)

Country Link
EP (1) EP0008276A1 (de)
FR (1) FR2432371A1 (de)
MA (1) MA18549A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573697A1 (fr) * 1984-11-23 1986-05-30 Beton Es Vasbetonipari Muevek Procede et installation de fabrication d'elements en beton
CN107901208A (zh) * 2017-12-07 2018-04-13 郑州市第建筑工程集团有限公司 预制钢筋混凝土管片全自动生产线
CN116442368A (zh) * 2023-05-31 2023-07-18 江苏三工建材科技有限公司 一种新型蒸压加气混凝土板材生产线及生产方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402878A (fr) * 1964-02-03 1965-06-18 Force Et Lumiere Electr Forclu Nouveau procédé de fabrication en continu de pièces moulées en béton, installations et dispositifs pour la mise en oeuvre de ce procédé
FR2199684A5 (de) * 1972-09-19 1974-04-12 Lely Nv C Van Der
DE2345941A1 (de) * 1973-09-12 1975-03-27 Stetter Gmbh Verfahren und vorrichtung zur fertigung grossflaechiger zweischaliger wandelemente vornehmlich aus beton
DE2649030A1 (de) * 1976-10-28 1978-05-11 Avermann Masch Bernard Anlage zur herstellung von betonfertigteilen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402878A (fr) * 1964-02-03 1965-06-18 Force Et Lumiere Electr Forclu Nouveau procédé de fabrication en continu de pièces moulées en béton, installations et dispositifs pour la mise en oeuvre de ce procédé
FR2199684A5 (de) * 1972-09-19 1974-04-12 Lely Nv C Van Der
DE2345941A1 (de) * 1973-09-12 1975-03-27 Stetter Gmbh Verfahren und vorrichtung zur fertigung grossflaechiger zweischaliger wandelemente vornehmlich aus beton
DE2649030A1 (de) * 1976-10-28 1978-05-11 Avermann Masch Bernard Anlage zur herstellung von betonfertigteilen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BETONSTEIN-ZEITUNG, Fascicule, No. 3, Mars 1969, pages 172 et 173 Wiesbaden (DE) "Neue Anlagen, Gerate und Hilfsmittel fur das Betonwerk". * Article en entier, figures 1-4 * *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573697A1 (fr) * 1984-11-23 1986-05-30 Beton Es Vasbetonipari Muevek Procede et installation de fabrication d'elements en beton
CN107901208A (zh) * 2017-12-07 2018-04-13 郑州市第建筑工程集团有限公司 预制钢筋混凝土管片全自动生产线
CN116442368A (zh) * 2023-05-31 2023-07-18 江苏三工建材科技有限公司 一种新型蒸压加气混凝土板材生产线及生产方法

Also Published As

Publication number Publication date
MA18549A1 (fr) 1980-04-01
FR2432371B1 (de) 1983-01-14
FR2432371A1 (fr) 1980-02-29

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