US3741083A - Compaction device for loose materials or concrete - Google Patents

Abstract

A compaction device for loose materials or concrete comprising a vibrator whose table is movably connected with a plate; said plate has holes through which vibrating bars are passed, said bars being rigidly fastened to the table. The use of said plate imposes a static load on the compacted layer of material, thereby preventing said layer from being loosened particularly when said bars are leaving said layer.

Description

United States Patent [191 Freidenberg et al.

[ COMPACTION DEVICE FOR LOOSE MATERIALS OR CONCRETE [76] Inventors: Anatoly Samuilovich Freidenberg,

ulitsa Malysheva, 111, kv. 57; Igor Pavlovich Basias, ulitsa Gagarina, l2, kv. 80, both of Sverdlovsk; Vladimir Ilich Shakhlin, ulitsa Lenina, 60/1, kv. 51, Magnitogorsk; Alexei Grigorlevich Trifonov, ulitsa Pushkina, 30, kv. 14, Magnitogorsk; Timoiei Grigorievich Shunin, poselok Dzerzhinskogo, ulitsa Dzhambula, l0, Magnitogorsk; Andrei Dmitrievich Filatov, ulitsa Oktyabrskaya, l5, kv. 7, Magnitogorsk; Mikhail Moiseevich Prlvalov, Bolshaya' Dekabrskaya, 3,

korpus l4, kv. 49, Moscow; Gennady Elizarovich Ovchinnikov, ulitsa Kalinina, 3, kv. 85,

Magnitogorsk, all of USSR.

22 Filed: Aug. 26, 1970 21 App]. No.: 66,998

521 US. Cl. .Q ..404/116 June 26, 1973 [51] Int. Cl. E0lc 19/30 [58] Field of Search 94/48 [5 6] References Cited UNITED STATES PATENTS 2,224,506 12/1940 Baily 94/48 FOREIGN PATENTS OR APPLICATIONS 441,228 1/1936 Great Britain 94/48 418,882 11/1934 Great Britain 1,107,666 10/1955 France 94/48 Primary Examiner-Nile C. Byers, Jr. Attorney-Holman and Stern [57] ABSTRACT A compaction device for loose materials or concrete comprising a vibrator whose table is movably connected with a plate; said plate has holes through which vibrating bars are passed, said bars being rigidly fastened to the table. The use of said plate imposes a static load on the compacted layer of material, thereby preventing said layer from being loosened particularly when said bars are leaving said layer.

3 Claims, 1 Drawing Figure PAIENTEDJUNZS I975 3.741.083

I llllllllll illlll| l llll! Illllllll ||1 COMPACTION DEVICE FOR LOOSE MATERIALS OR CONCRETE The present invention relates to the compaction devices for loose materials or concrete.

Most successfully the present invention can be utilized in making highly compact linings of furnace hearths and of the baths of heat-generating installations, though it may be used equally well for compacting loose soils in highway engineering.

At present there exist the devices for compacting loose materials comprising a vibrator with vibrating bars located under the table of said vibrator, said bars being secured rigidly to said table and compacting the materials as the vibrator is being moved towards the compacted layer during its vibration.

Though the vibrating bars ensure uniform compac-. tion throughout the thickness of the layer of material, they however, loosen it, particularly on the surface, when they are withdrawn from the material.

The furnace hearths made from the material compacted by vibrating bars withstand only 40 to 60 melts which results in heavy expenditures of refractory materials and in frequent repairs of the furnace hearths. It is obvious that this cuts down their output to a considerable extent.

The main object of the invention resides in providing a compaction device for loose materials with the vibrator table improved so that said device would ensure uniform compaction throughout the thickness of the layer.

This object is accomplished by providing a compaction device for loose materials or concrete comprising a vibrator and vibrating bars located under the table of said vibrator, said bars being secured rigidly to said table in which, according to the invention, there is a plate connected movably with the table and having holes through which the vibrating bars pass and whose dimensions donot interfere with their vibration; the movable joint of the plate with the table allows them to move freely towards each other. Such an arrangement imposes a static load on the layer being compacted both when the vibrating bars are dipped in to this layer and when they leave it, thereby preventing the material, particularly the surface layer thereof, against being loosened.

It is practicable that the movable joint of the plate and table be made in the form of bolts secured to the plate and extending through the holes in the table, said holes serving as guides for said bolts.

The proposed device usedfor compacting magnesite powders makes it possible to obtain a volumetric weight of 2.8 2.9 g/cm of the layer, the grain porosity beingBg/cm.

The furnace hearths made from a material compacted with the aid of the proposed device withstand 200 and more melts.

To make the invention more apparent, given below is an actual example of its realization with reference to the accompanying drawing (which illustrates a partly cutaway front view of the compaction device according to the invention.

The compaction device for loose materials comprises a vibrator l with vibrating bars 3 located under the table 2 of said vibrator, said bars being rigidly secured to said table.

. the movable joint or loss-motion connection means allows the plate to float, and the plate and the table to move towards each other.

The vibrator 1 is fastened to the table 2 by welded angles 8. The vibrator 1 is placed on the surface of the compacted layer with the aid of handles 9 so that the plate 4 would fit against the surface of the layer and the bars 3, passing through the holes 5, would enter this layer. The plate 4 imposes a static load, thereby preventing the compacted material from being loosened. Then the vibrator is switched on and the table 2 with the bars 3 goes slowly down under its own weight and the bars compact the layer of the material. After the bars 3 have been completely dipped into the material, the vibrator 1 returns to the initial position and the bars leave the compacted layer.

At the. moment when the bars come out of the material, the plate .4 prevents the surface layers of the material from being loosened. Then the vibrator 1 is moved to the next area of the material to be compacted and the cycle is repeated over again.

While a specific ambodiment of the invention has been disclosed in the description, it will be understood that various modifications and changes within the spirit and the scope of the invention may occur to those skilled in the art.

Weclaim 1. In a compaction device for vibrationally compacting loose material such as concrete, refractory material and the like comprising: table means;

vibrator means on said table means; vibrator bar means integral with said table means for receiving vibrations of said vibrator means through said table means and consolidating material in which said bars are immersed, said vibrator bar means having free lowerends, the improvement comprising, in combination: reciprocable static-load plate means supported below and from said table means intermediately of said vibrator bar means and forming static load transmitting surfaces therebetween, said static-load plate means including openings through which said bar means project and spaced from said bar means so that vibrations or the bar means are not transmitted thereto; and

means connecting said static-load plate means to said table means, said table means including lossmotion connection means for permitting said static-load plate means to freely move upwardly relative to said bar means when a static load is applied to the material being compacted and substantially retaining the character of the compacted surface when the vibrator bar means is withdrawn from the compacted material.

2. The structure as claimed in claim 1 in which the free ends of said vibrator bar means are tapered a substantial distance above the free ends to substantially space the operating portions of the bar means from the 3 ,74 l ,08 3 1 3 4 opening of said static-load plate surfaces' between the secured to said static-load plate means and projecting vibrator bar means. through said table means for free relative movement in 3. The structure as claimed in claim 1 in which guide said table means. means comprises elongated guide elements terminally

Claims (3)

1. In a compaction device for vibrationally compacting loose material such as concrete, refractory material and the like comprising: table means; vibrator means on said table means; vibrator bar means integral with said table means for receiving vibrations of said vibrator means through said table means and consolidating material in which said bars are immersed, said vibrator bar means having free lower ends, the improvement comprising, in combination: reciprocable static-load plate means supported below and from said table means intermediately of said vibrator bar means and forming static load transmitting surfaces therebetween, said static-load plate means including openings through which said bar means project and spaced from said bar means so that vibrations or the bar means are not transmitted thereto; and means connecting said static-load plate means to said table means, said table means including loss-motion connection means for permitting said static-load plate means to freely move upwardly relative to said bar means when a static load is applied to the material being compacted and substantially retaining the character of the compacted surface when the vibrator bar means is withdrawn from the compacted material.

2. The structure as claimed in claim 1 in which the free ends of said vibrator bar means are tapered a substantial distance above the free ends to substantially space the operating portions of the bar means from the opening of said static-load plate surfaces between the vibrator bar means.

3. The structure as claimed in claim 1 in which guide means coMprises elongated guide elements terminally secured to said static-load plate means and projecting through said table means for free relative movement in said table means.

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