SU485875A1 - Installation for the continuous manufacture of concrete products - Google Patents

Description

the largest filler. Such an embodiment of the device makes it possible to prevent leakage of cement milk and fine aggregate from the concrete mix, to reduce the differences in the links, to reduce the wear of the links and the traction chains.

FIG. 1 shows a fragment of a vibratory rolling mill with a device for compacting concrete mix, top view; in fig. 2 - the same, side view.

The vibratory rolling mill includes a shaping belt 1, above which concrete mixers 2 are installed, paver 3 and a concrete compacting device -l, made in the form of a spring-loaded plate 4 with rods 5 rigidly connected to the plate 4.

Depending on the width of the rolled product, the number of plates 4 may vary (two plates 4 are shown in Fig. I). Each of the plates is equipped with vibration groups 6 and with its screws 7 using nuts 8 and shock absorbers 9 installed in sleeves 10 rigidly connected to the bed and the mill. The length of the rods 5 of the plates 4 is chosen empirically depending on the composition of the concrete mixture being compacted and the rolling speed and lies within 0.5-1 m, while the gap between the rods should be larger than the size of the largest aggregate of concrete mix to be located in the zone of the plow 12 of the paver 3, and the distance b from the lower edge of the rods to the board 13 of the forming tape 1 should be minimal.

Each of the rods 5 is made in the form of a hollow rod of a cylindrical shape with a closed end.

The work of the mill is as follows.

When the mill drive is turned on, the molding tape 1 begins to move in the direction of the arrow B. Simultaneously, the drives of the concrete mixer 2, the concrete paver 3 and the vibratory groups of 6 plates 4 are turned on. mi 5 concrete mix

acquires the necessary mobility, flows through the gaps a between the rods 5 and fills the required volume, bounded by the forming tape 1, the boring equipment 13 and the partition boards (not shown in the drawing). After the concrete mixture is laid on the forming tape 1, it is consolidated by the lower edges of the rods 5. Excess concrete is then cut off by known devices, for example, vibrator knives (not shown in the drawing).

With the help of nuts 8, it is possible to change the rigidity of the shock absorbers 9, and thereby change the amplitude of oscillations of the plates 4 with the rods 5.

When using the described device for compacting a concrete mix on vibratory rolling mills, vibration to links and chains is transmitted through a layer of concrete mix, i.e. the intensity of vibration acting on links

forming belts and traction chains are significantly smaller than at known mills. Due to this, link drops are significantly reduced in the rolling mill, leakage of cement milk and fine aggregate is eliminated, and wear of links and draw chains is also reduced.

Subject invention

An installation for the continuous manufacture of reinforced concrete products, containing a forming tape, made in the form of hinged parts on traction chains,

drive and tensioning stations, a concrete mixer, a concrete paver, a heat chamber and a device for compacting the concrete mix with vibrators, in order to improve the quality of the surfaces

products from the forming tape, as well as reducing wear of links and drag chains, the device for compacting concrete mix is installed above the forming tape and is made in the form of a plate spring-loaded in the vertical direction with rigidly fixed rods parallel to the longitudinal axis of the mill.