FR2874349A1 - Pre-fabricated mortar and concrete product e.g. reinforced concrete beam, fabricating device for e.g. building industry, has two beams, where each beam has three pairs of chisels to constitute lift table vertically moved by two jacks - Google Patents

Abstract

The device has a tubular frame that rests on two beams, where each beam has three pairs of chisels for constituting a motorized lift table vertically moved by two jacks. A horizontal form panel (3) or base is located on the frame. A movable vertical form panel or side is disposed on a series of grooved wheels. A series of screw plungers permits to adjust position of cross-pieces that reinforce two vertical plates forming mould walls. The vertical form panel has its structure fixed vertically with trapezoidal reinforcements. The horizontal form panel or base and mould walls are formed with the plates in a single piece.

Description

The present invention relates to a multi-purpose machine for

  molding most of the reinforced concrete construction elements with a higher quality of finishing and a relatively short implementation time, but also to use it as a support for many shape molds.

  The molding of these building elements is traditionally performed through the assembly of small panels on a floor structure; process involving a relatively long implementation time and poor quality of finish due to the many joints between the panels, which leave their mark on the product.

  In addition, handling these banches increases the risk of accidents for operators. Their light structures do not always withstand the significant pressures suffered, following the vibration operation of the reinforced concrete.

  The machine according to the invention makes it possible to adjust a bottom and two vertical cheeks using cylinders, all in a few seconds.

  The design of the structure allows to mold products up to 400 mm wide, 1 meter high and 12 ml without appearance defects and without deformation due to the expansion of the metal due to possible thermal stresses. (See Figures 7 and 8) The machine according to the invention can be fully automated by programming the dimensions on a console.

  The bottom, or horizontal branch, is a metal plate on tubular frame (according to its width); the latter rests on two beams each equipped with three pairs of scissors. The set forms a table moved vertically by two cylinders. The two beams are independent and allow to obtain a setting of the seat of the bottom wall. (See Figure 6) One of the beam-scissors sets is movable laterally, allowing the opening of the movable cheek independently of the bottom table. (See Figures 3, 4 and 6) The cheek, or mobile form, is a welded structure placed on a series of grooved wheels guided on the structure. The surface in contact with the product is a plate reinforced by sleepers. (See Figures 5, 7 and 8) The two vertical plates forming walls of the mold are reinforced by cross members independent of the structure on which they rest. A series of push screws makes it possible to adjust the position of these sleepers, thus to obtain the desired flatness and to allow the steel plates to expand as a function of any external thermal stresses. (See Figures 3, 4, 5 and 6) Trapezoidal steel reinforcements are fixed vertically on the structure of the vertical panels, thus allowing to absorb considerable efforts produced by the concrete and its implementation (vibration, elevation of the temperature, dilation). (Figure 2) The accompanying drawings illustrate the invention: Figure 1 shows in 3 dimensions the invention in its entirety consists of two bags of 12 ml in length by 1 meter of useful height.

  Figure 2 shows in section the invention where we can visualize the movable trusses with vertical reinforcements, fixed trusses and lifting tables.

  Figures 3 and 4 show in section the invention in the molding position with a product inside.

  Figure 5 shows a 3-dimensional pocket where one can view the movable cheek, its tubular structure and its reinforcements on its raceways.

  Figure 6 shows a 3-dimensional exploded view of the lift table.

  Figure 7 shows a 3-dimensional section of a pocket, to visualize the tubular structure that allows the expansion of the form.

  Figure 8 shows in section the tubular structure of a pocket, and the lifting table consists of three scissors linked to the fixed formwork and three movable scissors independent of the mobile form.

Description of the drawings:

  Figure 1: the pocket (1) and the pocket (2) symmetrical forms formwork in which will be implemented the various components of reinforced concrete (reinforcement, concrete mix).

  Figure 2: the vertical reinforcement (1) is a solid steel part with varying thicknesses between 10 and 30 mm depending on the dimensioning of the vertical movable sleeve (1 '). The vertical movable sleeve (1 ') is composed of a tubular structure, vertical reinforcements and a steel plate forming a mold wall; the assembly mounted on wheels with triangular grooves for the translation of the form.

  The fixed formwork (2) is composed of a tubular structure and a steel plate forming a mold wall fixed to the frame (4).

  The horizontal wall (3) not shown in this drawing consists of a single steel plate, optionally reinforced by a tubular structure according to these dimensions, the simply placed on the IPE beams of the lift table.

  The frame (4) is a steel structure consisting of HEA and HEB beams forming a support base of the assembly of the invention and supporting the rail angles necessary for the movement of the movable blade and movable scissors.

  The structural adjustment cylinders (5) are simple M30 screws quality 12.19 allowing the adjustment of the flatness of the structure and to catch any deformations of the civil engineering slab.

  Figures 3 and 4: the products (2) are the representation of prefabricated concrete elements for the construction, in these figures in molding configuration.

  Figure 5: (1) represents the vertical deflection of the lifting table to carry the bottom handle for adjusting the molding height.

  (2) represents the lateral displacement of the mobile part of the lifting table allowing the adjustment of the molding width.

  Figure 6: (2) represents the lateral displacement of the vertical movable body allowing the adjustment of the molding width.

  Figure 7: the crosspieces (1) of construction tube are integral with the steel plate forming the mold walls and free from the structure of the formwork allowing expansion. The connection and adjustment of these sleepers (1) are made by threaded rods with nuts and locknuts.

  Figure 8: The adjusting screws (2) are threaded rods with nuts and locknuts for adjusting the flatness of the steel plate forming the mold walls. The sleepers (1) are described in FIG.

  The invention is particularly intended for the Construction and Public Works industry and in particular for the manufacture of prefabricated concrete and mortar products.

Claims (6)

  1) Device for vertically positioning the bottom of concrete mold characterized by a lifting table consisting of a set of scissors moved by a jack and to absorb considerable loads.   2) According to claim 1, device for laterally positioning a set of scissors moved by a jack necessary to adjust the width of the mold base.   3) Design of a structure to support a steel plate 12 meters long by 1 meter high while leaving it free to expand in its plan.   4) According to claim 3, design of a laterally movable tray, allowing the use of a steel plate 12 meters long by 1 meter high forming mold walls to adjust the molding width.   5) According to claim 3, use of steel plates 12 meters long by 1 meter high forming mold walls allowing a flawless finish over 12 meters.   6) Design of a vertically and horizontally adjustable mold allowing the intervention of a single operator in a reduced time.