SU814734A1 - Vibrated-impact platform for shaping articles of concrete mixed - Google Patents

Description

8 - distance between central vertical axes of adjacent vibroblocks Each vibroblock is provided with a damper of angular oscillations of a movable frame in the form of a rod with a weight fixed on its lower end, mounted on a movable frame along the vertical axis of the vibroblock using a clamp, and the total mass of absorbers is 3Q - J- mass of the moving frame.

FIG. 1 shows the device, a general view; on. 2 - the same plan view.

The vibro-shock platform for molding concrete mix products consists of separate vibroblocks 1 mounted on elastic supports 2, with a movable frame 3 mounted on vibroblocks, which with the help of strikers consisting of rigidly interconnected plates 4, interacts with the upper 5 and lower 6 elastic strikers, fixed 1and on the waterbrushes

one..,

Single-shaft unbalanced pathogens 7 oscillations of each vibroblock, kinematically unrelated to each other, are mounted in pairs and symmetrically to its central vertical axis.

On the movable frame 3 by means of clips 8 fixed form 9 with a concrete mix. Each vibroblox is supplied with a damper of angular oscillations of the movable frame 3 in the form of cores 10 with a weight 11- fixed on its lower end mounted on the movable frame along the vertical axis of the vibroblock using a clamp 12.

The rigidity of the movable frame K (0.1-0, 2) mw2l

where K is the rigidity of the movable frame

bending;

m is the mass of the movable frame; W is the oscillation frequency; g is the distance between the central vertical axes of the neighboring vibroblocks, and the total mass of absorbers is equal to ZQ of the mass of the moving frame 3, moreover, the natural frequency of the damper is the frequency of forced oscillations of the system.

Urtanovka works as follows.

Before starting work, the non-common frame 3 is fitted with a form 9, which is attached to frame 3 with clamps 8 and filled with concrete. The vibrators 7 are turned on simultaneously. Each pair of vibrators 7 begins to rotate in opposite directions with a slight deviation from synchronous and antiphase pressure. In this case, additional small oscillations arise in the frame 3, which create vibrational moments acting on the vibrators 7 and synchronizing their rotation. Dampers eliminate small angular oscillations of these sections, thereby improving the conditions of self-synchronization, which allows you to expand the range of molded products. Synchronously and antiphase rotating vibrators 7 excite vertically directed disturbing forces in vibroblocks, under the action of which vibroblocks impactors simultaneously strike the upper 5, and then the elastic strikes on the lower b, because of its overall frame 3 of the vibro-impact platform receives vibro-shock oscillations.

The proposed implementation of the vibro-impact platform expands the range of manufactured products.

invention formula

Vibro-shock platform for molding concrete mixes according to ed. St. 591315, characterized in that, in order to increase plant efficiency by expanding the range of vibratory impacts, each vibroblock is equipped with an angular oscillation damper of the movable frame in the form of a rod with a weight fixed on its lower end mounted on the movable frame along the vertical axis of the vibroblock using a clip , moreover, the total mass of absorbers

equal to 2 moving masses

frame.

Sources of information taken into account during the examination

1. USSR author's certificate 591315, cl. B 28 B 1/08, 1976.

Claims (1)

Claim Vibro-impact platform for molding products from concrete mixtures according to ed. St. No. 591315, characterized in that, in order to increase the efficiency of the installation by expanding the range of vibration 40 actions, each vibration unit is equipped with a damper of angular vibrations of the moving frame in the form of a rod with a load fixed on its lower end mounted on a moving frame along the vertical axis of the 45th vibration unit using a clamp, and the total mass of the absorbers is equal to X - dGG of the mass of the movable frame.