ES2335465A1 - Improvements made to machines for continuous production of pre-stressed or reinforced concrete pieces - Google Patents

Abstract

The machine (1) has a fixed hopper (2) fed with concrete towards a vibrator mold (3). A lower retention mold (4) and the vibrator mold forming a definitive profile of a developed piece is provided at the interior of the fixed hopper and in a rectangular lower part of a settler and agitator assembly of the concrete. A lateral closure extends between the vibrator mold and the retention mold on a fabrication path (22) and is formed by a flexible closing lip (23) having a length equivalent to that of the closure.

Description

Improvements introduced in the object of the Patent Principal nº P 200700250 by: "Improvements introduced in machines for the continuous manufacture of concrete parts prestressed or armed. "

This Addendum Patent refers to some improvements introduced in the object of Invention Patent No. P200700250 for "Improvements introduced in machines for the continuous manufacture of prestressed concrete parts or armed. "

The present patent of addition refers to the improvement introduced in machines for continuous processing of prestressed or reinforced concrete parts, characterized machines basically for being constituted by a movable chassis on rails that determine the manufacturing track, and provided with the necessary elements for the reception of concrete (a dust hopper mobile), for feeding the vibrating mold (fixed hopper), the mentioned vibrating mold, provided with a series of noyos, and next to this one a retention mold, and a last mold with function of tuner, also provided with noyos.

Object of the invention

The improvement object of this addition patent it consists of equipping the machine with continuous production and movable on rails, of a system of own traction for its displacement along the manufacturing tracks, by means of motorization of its front wheels of translation.

The application of this traction system allows to eliminate the traditional system used today in this type of scrollable machines, consisting of a mechanism of roll cable trailed on drum, driven by gearmotor The new autonomous motorized system allows eliminating the drag cable, laid along the entire track of manufacturing, extremely cumbersome installation given the length of said track (between 150 and 200 m.) avoiding the problems derived from said laying, as are the cable pulls, due to its own elasticity and its catenary, as well as the speed variation of displacement that usually occurs as the amount of cable wound on said drag drum.

The system application described in then it allows to absorb the oscillations or inertia that produces the mobile feeding dumper when moving for function, thereby preventing the machine from accelerating or increasing its speed due to the thrust exerted by the concrete when extruded. It is achieved, then, with this new traction system, that the machine acquire a uniform, variable and controlled feed rate at will, which has a positive impact on uniformity and Finishing of manufactured parts.

Finally, the traction system subject to This invention allows to reverse the direction of advance of the machine, very useful at times when, due to a cut or failure of the concrete feeding, the machine must be moved back to a certain distance to resume manufacturing, impossible displacement with the machines provided with the current displacement system by drag cable.

State of the art

The Spanish Invention Patent must be cited nº 428477, referring to "Improvements for manufacturing continuous beams, plates and similar concrete ", as well as the Spanish Invention Patent No. 200700250 concerning "Improvements introduced in the machines for continuous manufacturing of prestressed concrete parts or armadas ", a patent to which the present patent of addition.

Description and graphic information

As described above, the machine provided with the traction system object of the present invention, has a mechanism in its front part reducer driven by a suitable electric motor, which drives a transversal axis on which some chains are seated traction transmitters that, through toothed pinions, they rotate the wheels of translation of the machine, causing the displacement of this, displacement whose speed is controlled by means of a frequency inverter that acts on the electric motor of the reducer.

In order to complement the description made, as well as to help a greater understanding of the essential characteristics of the invention, some drawings are attached to this description in which, by way of illustrative and non-limiting example, an embodiment has been represented practice of said invention. In these di-
bujos,

Fig. 1 is a side elevation view of the machine, and partially sectioned in its front part to allow to show the traction system as a whole;

Fig. 2 shows the machine frontally, the drive gearmotor equipment, the transverse axis that drives the tractor wheels and chains traction transmitters to said wheels; Y

Fig. 3, finally, is a view on perspective of the machine itself, which allows observing the whole of the traction system, object of this patent, located in its part lead.

According to these drawings, the machine (1) for the continuous manufacture of prestressed concrete parts or armed, it is provided with consistent improvements in the application of a traction system located at its front, such as they represent figures 1 to 3.

It comprises said traction system in a electric gearmotor (2), fixed on a base plate (3), the which is integrated in the chassis of the machine (1), whose gearmotor (2) is provided with a variable speed drive for adequate control

From the reducer itself (4) the axis emerges traction traction (5), equipped with fixing brackets (6) and provided at its ends with the appropriate serrated sprockets (7), on which transmitter chains are located (8), provided with the tensioners (9), necessary for a correct transmission.

In the lower part of the front sides of the machine (1) two wheels are located, one of them (10) with eyelashes and the other (11) totally smooth. These wheels, subject to machine chassis (1) by means of suitable supports, they have the corresponding axes of rotation, as well as toothed crowns (12) on which the aforementioned transmitter chains are coupled (8) for proper movement.

The wheel with tabs (10) ensures the guidance rectilinear on the raceway along the track manufacturing, while the wheel without tabs (11) allows the rolling absorbing possible tolerances and misalignments existing between axes of the mentioned track rails. These wheels are height adjustable to allow set adjustment of the machine (1) with its molds on the surface of the track manufacturing.

The remaining wheels (13), free and without traction, one with eyelashes and another smooth, are located under the sides of the back of the machine (1), wheels that ensure the correct translation of the machine (1) and that they are also height-adjustable, like their tensile counterparts, to allow the adjustment of the machine on the surface of the track manufacturing.

Finally, the special must be indicated. arrangement on one side of the front of the machine (1) of a reel reel (14), on which the cable is located Electric gearmotor feeder (2), and collects correct said cable.

Having sufficiently described the object of This addition patent must indicate that any variation in dimensions, materials, shapes and types of mechanisms to be used in the practical realization of the traction system will not alter the essentiality of the invention, is summarized in the claims following.

Claims (3)

1. Improvements introduced in the object of Main Patent No. P200700250 for "Improvements introduced in machines for the continuous manufacture of prestressed or reinforced concrete parts", machines basically constituted by a movable chassis on rails along a track of manufacture, and provided with the mobile, concrete receiving hopper, the fixed feed hopper of the vibrating mold, the aforementioned vibrating mold and the tuning mold, characterized by consisting of the application of a traction system, located in the front part of the machine (1), comprising an electric gearmotor (2), fixed to the chassis plate (3) and provided with a suitable speed variator as well as a reel reel (14) of electric cable, and whose reducer, properly said (4), a transverse traction axis (5) emerges, the ends of which are held by supports (6) and topped by toothed pinions (7), which are nsmit the movement, through traction transmitter chains (8), to toothed crowns (12) of the traction wheels (10) and (11) located under the front sides of said machine (1), causing displacement , in both directions as required, of the machine assembly. 2. Improvements introduced in the object of Main Patent No. P200700250 for "Improvements introduced in machines for the continuous manufacture of prestressed or reinforced concrete parts", according to the preceding claim, characterized in that one of the traction wheels (10) It is equipped with guide tabs that guarantee the rectilinear guidance of the assembly, on the track, while the other drive wheel (11) is completely smooth and without guide tabs, in order to compensate for possible tolerances and misalignments between axes of the rails, identical arrangement of the free or non-tractor wheels (13) located at the rear of the machine (1), provided with one of them with flanges and the other smooth. 3. Improvements introduced in the object of the Main Patent No. P200700250 for "Improvements introduced in the machines for the continuous manufacture of prestressed or reinforced concrete parts", according to the preceding claims, characterized in that both the front traction wheels (10) and (11) as the subsequent free or non-tractor units (13) are height adjustable for adjustment of the machine (1) on the surface of the manufacturing track.