SU1400890A2 - Multiple-mould installation for manufacturing ferroconcrete articles - Google Patents

Abstract

This invention relates to cassette installations for the manufacture of reinforced concrete products. The invention makes it possible to reduce the energy consumption of the installation by reducing the intensity of oscillations of the spacer frame due to the fact that the spacer frame is made of composite, consisting of pivotally connected longitudinal 14, 15 and transverse 2, 16 beams, their connecting parts 17. plates with holes, two spacer sleeves between them, a finger and fiksipyyup bolts located around the circumference of the hinge in the holes of the plates with a gap. 5 il.

Description

(L

14)

fug. 2

The invention relates to cassette installations for the manufacture of reinforced concrete products and is an improvement of the known cassette installation according to the authors. St. No. 1147570.

The purpose of the invention is to reduce the energy consumption of the installation by reducing the intensity of vibrations of the expansion frame.

FIG. 1 shows the installation, general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows the node I in FIG. 2 in FIG. 4 shows a section BB in FIG. 3; in fig. 5 shows a section B-B in FIG. 3

The cassette unit comprises an expansion frame 1 with a vibrating moulder 2, vibration exciters 3, a stripping mechanism 4, a cassette form with spacer cones (not shown) consisting of a fixed thermal wall 5, intermediate thermal walls 6 and an extreme mobile wall 7

The expansion frame 1 is mounted on the base 8 by means of elastic supports 5. The vibrator 2 is rigidly connected with the vertical cross-members 10, which are provided with support plates 11. On the side of the moving wall 7, vertical cross-members 12 are installed with the support plates 13. The crossbars 12 are hinged Zana with the mechanism 4 stripping.

Base plates 11 and 13 are aligned with the spacer cones (not shown).

The spreader frame 1 of the cassette installation is made of a composite, consisting of two pivotally connected longitudinal beams 14 and 15 (right and left), two transverse beams 2 and 16 (front and rear) and connection nodes 17.

Each node connecting the beams is made in the form of support plates 18 and 19 with holes, two spacer sleeves 20 and 21 between them, a finger 22 and. fixing bolts 23 located circumferentially about the center of the hinge in the holes of the plates 18 with an annular gap. Plates 18 and 19 are welded along the edges of the beams, with plate 19 welded to the longitudinal beams 14 and 15 from above, and plate 18 to the transverse beams from below.

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Cassette installation works as follows.

When the cassette form is rallying, the cross beams 2 and 16 experience a bending deformation due to the thrust forces.

Due to the hinges, the deflection of the transverse beams is accompanied by rotation of the plates 18 with holes relative to the fixed openings of the plates 19 attached to the longitudinal beams. With this, the bending moments redistribute with decreasing to zero in the hinges of the beams.

To eliminate the resonance of oscillations of the longitudinal beams 14 and 15 with respect to the transverse beams 2 and 16 with the stripping mechanism 4, an annular gap is required between the holes in the plates and the bolts 23, the gap being determined by the following relationship:

0

5 o

Q

,

five

0

five

where d, is the diameter of the holes in the plates;

d is the diameter of the bolts;

P is the load of the beam;

R is the radius of the marking of the bolts relative to the center of the hinge;

E is the modulus of elasticity of the material of the beam;

Y, (is the moment of inertia of the cross section of the transverse beam 16;

1 - the estimated length of the beam;

a is the distance from the point of application of the load to the hinge. The operation of the cassette unit cyclically repeats.

Claims (1)

Claims. Cassette plant for the manufacture of reinforced concrete products according to ed. St. No. 1147570, characterized in that, in order to reduce the energy consumption of the installation by reducing the intensity of vibrations of the spacer frame, the spacer frame is made of a composite of pivotally connected longitudinal and transverse beams connected by nodes, each of which is made in the form of support plates with holes between which two spacers are installed, connected by means of a finger and fixing bolts located circumferentially about the center of the hinge in the holes of the plates with a gap to prevent the occurrence of resonance for the longitudinal beams with respect to the transverse beams with the stripping mechanism. sixteen 1 Fig.Z 5 - & noBepHtftno fa FagM 23 5