SU1502311A1 - Vibration-impact platform for concrete mixes - Google Patents

Abstract

The invention relates to the manufacture of precast concrete and reinforced concrete products and allows to intensify the compaction process due to the effect on the concrete mix by the processing disturbing forces. This is achieved by the fact that in the vibro-impact platform for compacting concrete mixes, each vibroblock is made of parallel sections 4 with parallel unbalanced form axis 4 and common unbalanced shafts 2, along which eccentrics 6 are successively installed. at angles ϕ ₁ = 180 ° / (N ₁ -1)

ϕ ₂ = 180 ° / (N ₂ -1), where ϕ ₁ is the phase angle of each subsequent vibroblock relative to the previous one

ϕ ₂ is the phase angle of each subsequent section relative to the previous one in any vibroblock

N ₁ - the number of vibroblocks

N ₂ - the number of sections in the vibroblock. 5 il.

Description

g, 3

/ P I

// /// //////////////// /// /// /// // // ///, y //. /// //

.3

SP

ABOUT

with

3150

It acquires the production of precast concrete and iron products.

The purpose of a shadow image is to intensify the compaction processes by affecting the concrete mix with the processing disturbing forces.

Figure 1 shows schematically a vibro-impact platform for compacting concrete cMecefi, top view; figure 2 - section aa in figure 1; on fig.Z - section BC in figure 1; figure 4 - position of eccentrics one relative to another; Fig. 3 shows the change in the position of the plane of action of the forced forces when the debalance shaft is rotated 180.

The vibrating platform includes self-synchronized vibroblocks mounted on the base by means of elastic supports 1 and not connected to each other with parallelly located driving unbalanced shafts 2 and elastic gaskets 3 on which form 4 is supported. Each vibroblock is made of parallel sections of the unbalanced shafts 2 parallel to the longitudinal axis of the form, along which the eccentrics 6 are installed in series. The unbalanced shafts 2 are connected by couplings 7 with the engines 8. The eccentrics 6 of the subsequent vibroblocks and sections are out of phase with about relative to previous angles respectively

W, - -ISQl-. f - -1o1 p. - gp - G

where is the angle of displacement in the phase of each subsequent vibroblock relative to the previous one;

- the phase offset angle of each subsequent section in any vibroblock;

n is the number of vibroblocks; n is the number of sections in the vibroblock. The site works as follows.

On elastic pads 3 set the form 4 with a concrete mix. For- Those include drive motors 8, which rotate unbalance shafts 2 with eccentrics 6. At the moment when the eccentrics 6 of any section 5 of the vibroblock take the uppermost position, a collision occurs between the elastic gaskets 3 mounted on this section and form 4. After turning the unbalance shafts

four

Claims (1)

2 at the corner of the extreme upper position are eccentrics 6 next to the one located in the direction of the first section of the next vibroblock. Upon further rotation of the unbalance shafts 2, subsequent collisions occur on sections 5 of the following vibroblocks. As a result, the eccentrics 6 are out of phase with each other by an angle (successive collisions with the form 4 elastic pads 3 of the subsequent sections 5 of the vibroblock occur in subsequent sections of the vibroblock. For example, for a platform containing three vibroblocks, each with four sections The angle C is 90 °, and the angle fe 60 For one revolution of the unbalance shafts of such vibroplatches, four successive collisions of elastic pads with the form in each vibroblock are carried out, and in the next standing sections of different vibroblocks also Three consecutive impacts are carried out. Due to the fact that sequential collisions occur both in sections of any vibroblock and in the vicinity of standing sections of various vibroblocks, the concrete mix is affected by the processing disturbing forces, the consolidation process is intensified concrete mixture at the sides of the form. The formula of the invention " Vibro-shock platform for compacting concrete mixes containing self-synchronized vibroblocks mounted on the base by means of elastic supports not coupled with each other with parallelly located driving unbalance shafts and elastic shims on which the form is supported, which is tenuous in order to intensify the processes compaction due to the impact on the concrete mix by the processing disturbing forces, each vibroblock is made of sections of sections parallel to the longitudinal axis E shaft, along which are installed sequentially eccentric, the latter vibroblokov and subsequent sections are displaced in phase relative to the previous angles respectively vp. 180 n, - 1 f, where v is the phase mixing angle of each 11th consecutive vibration block relative to the previous one; ; 2 phase mixes of each subsequent section relative to the preceding hours in any pibroblock; n is the number of vibroblocks; n is the number of sections in the vibroblock. g /// /// /// /////////////////////// /// /// /// /// /// /// /////// .2 FIEL Р r / 4y j ± 7 I jfvM ll1 jfl ffV iiyi 1 ii "i" /  7, /,. b & bXJkJUiKLJUb ; g  D / 1  Jiv i r h trrn rr-ri r / 4y  jfl ffV (± 3b ) lvsoyoan fnJem- forces 5