SU996200A1 - Void former - Google Patents

Description

(5) EMPLOYER

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The invention relates to the production of large-sized reinforced concrete hollow blocks, namely, devices for their manufacture.

A hollow core is known, which contains a split housing consisting of three elements that are movably connected to each other and pivotally connected by means of transverse straps with a central thrust, mounted with the possibility of rotation for mounting the housing elements into the working position. 1 Disadvantages hollow balers are a difficulty of manufacture, unreliable fixation of the forming 15 elements and large strengthening during the demolition, since the separation of the elements takes place simultaneously over the entire area.

Closest to the proposed 20 is a hollow core, comprising a split housing comprising side and bottom elements pivotally interconnected and a central link pivotally connected by transverse rims with side elements and mounted movably along the longitudinal axis of the body C 2 .

Specified Baler; it is simple to manufacture, however, the stripping is quite laborious, since it is produced by mechanical action on the levers, and because of the large number of elements of the body and their unreliable fixation, a quality hole in the product is not obtained.

The purpose of the invention is to reduce the pipeworking capacity of the process of stripping and improving the quality of the hole formed.

Claims (2)

This goal is achieved by the fact that in a hollow core including a detachable body comprising bo. The central and lower elements, pivotally interconnected, and the central rod, pivotally connected by transverse ribs with side elements, the central traction of sleep, are nuts and threads at the points of their attachment, with the nuts being sariirno connected to the transverse thrusts. The lower element under the fingers of the hinged joints of the latter and the lateral elements are made elongated one of which is figured with a notch along a circular arc with a center in the hinge connecting the side elements, and the other part of this groove is mirrored relative to This is the opposite groove of the lower element, I It is advisable hinged connected side elements with transverse thrusts positioned in the lower part, side elements. FIG. 1 shows a hollow image of the front; in fig. 2- times cut AA in FIG. one . The emptying device contains a demountable case 1 consisting of two lateral 2 and 3 and one: lower -k elements, which are interconnected by means of hinges 5-7 made in the form of fingers mounted in the holes of lateral ribs 2.3 and lower items. Inside the case there is a central traction ha 8, which, by means of transverse traction r 9 and hinges 10, is connected with side elements 2 1 and 3 Central traction ha is made as a composite shaft consisting of individual shafts connected by couplings 11 and provided with a thread 12 for nuts 13, which are provided with lugs 14 for swiveling the nuts 13 with the transverse rods 9. Hinges 5 and 6, connecting the square bottom element k to the side elements 2 and 3, are mounted to ensure that the movement of the ribs the bottom element T holes for hinges 5 and 6 are in the form of elongate slots whose width JBCO-etstvuet diameter of fingers, wherein one of the grooves formed shaped, with a recess 15 along the circular arc with center at the hinge 7, and another portion of the groove mirror is positioned relative to the opposed groove bottom member. Hinges 5 and 6; the connecting side elements 2 and 3 with the transverse arms 9, are located in the lower part of the side elements. 04 Pustotoobrazovatel works as follows. Before forming, the core former is brought to its working position. To do this, by rotating the central rod 8 of the body, the body is pushed to the required size, placed in a mold and filled with concrete. After molding and heat treatment, rotating the center rod 8 in the opposite direction moves the nuts 13, which transverse the side elements 2 and 3 relative to the hinge 7 through transverse t 9, detach them from the concrete, and the hinges 5 and 6 move in the guide grooves , at the same time the lower element 4 begins to tear off from the concrete from the side of the hinge 5, and the hinge finger b moves along the recess T5 of the guide groove. Upon further rotation of the centerpiece 8 after the finger of the hinge 6 of the recess 15 passes, the bottom element 4 is separated from the concrete from the hinge 6 side. When the hinges 5 and 6 reach their extreme position, the side 2 and 3 and the bottom elements are completely separated from the hinges 5 and 6 concrete and void former are removed from the product. The use of the proposed hollow core allows to ensure the safety of the moldable screw and reduce the labor intensity of the stripping due to the presence of a screw pair, a shaped guide groove and a lower arrangement of the hinged joints of the lateral elements with transverse drafts. Claim 1. A void-forming device comprising a split body comprising side and bottom elements pivotally interconnected and a central link pivotally connected by transverse t g with side elements, characterized in that in order to reduce the laboriousness of the stripping process and increase of the quality of the hole formed, the central part of the ha is fitted with nuts and threads at the points of their attachment, the nuts being pivotally connected to the transverse rods, and the grooves of the lower element for the hinge fingers after it and the side members are elongated, odi of which - shaped recess with a circular arc with center hinge 8, the binding side members and another portion of -paza mirror is positioned relative to the opposed groove bottom member. 2. Pustotoobrazovatel according to claim 1, distinguished by the fact that The hinged connection of the lateral elements with transverse straps is located in the lower part of the lateral elements. Sources of information taken ro attention with aKCiiepfiz 1. German Patent ff 06133 cl. 80 a 3/15,: 1924. 2. Authors certificate of the USSR No. B 28 B 7/30, 1973 (prototype).