SU1229339A2 - Device for breaking monolithic objects - Google Patents

Description

The invention relates to mining and construction, in particular to wedge-type devices for separating blocks from an array along a line of holes, for destroying the oversized foundations, and is an improvement of the known device according to Autom. No. 065595.

The aim of the invention is to increase the reliability of the device by increasing the durability of the sliding cheeks.

Fig. 1 shows the arrangement, general view; FIG. 2 is a section A-A in FIG. one.

The device consists of a housing 1 with a drive (not shown), sliding cheeks 2 and 3 connected to the housing I, and connected with the drive of a spacer wedge 4, having on the working surfaces protrusions 5 of segment shape in cross section and a hollow 6., The cheeks 2 and 3 have, on their working surfaces, one longitudinal protrusion 7 in contact with the projections 5 of the wedge 4 with a segment cross-section along their entire length. The points 8 of the conjugation of the protrusions of the wedge between them and the points 9 of the conjugation of the projections of the wedge with the surfaces not in contact with the cheeks are located on the arcs 10 concentric to the arcs of the segments of the cross sections of the protrusions on the working surfaces of the corresponding cheeks 2 and 3.

293391

The device works as follows. at once.

Device cheeks 2 and 3 with k'inom; 4 between them (Fig. 1) is entered into

ij pre-drilled hole in the rock. Then the wedge 4 is driven by a drive (not shown) and opens the pressure with its protrusions 5 onto the protrusions 7 of the cheeks 2 and 3, which

10, in turn, presses against the walls of the bore-hole and causes destruction. After the destruction of the rock, the device is brought to its original position and ready for the next cycle,

I h With the destruction of particularly strong

and strong rocks, the optimal number of protrusions on the working surfaces of the khshna is two, of the depressions — one. The execution of the wedge surfaces, the conch joint with cheeks in the form of more than two protrusions and one depression, causes a relatively small radius of curvature and protrusion surfaces, which leads to the appearance of increased contact stresses upon the destruction of hard rocks.

Such a constructive arrangement of the device reduces lateral loads from wedge protrusions along the edges of the rij, barrel surfaces of the cheeks due to lateral components of the transverse loads directed towards the central axis of the cheeks and reducing the effect of breaking the cheeks in their longitudinal symmetry plane.

Editor G. Volkova

Compiled by OLTopov Tehred N. Bonkalo

Akaz 2428/28 Circulation 470 Subscription

VNIIPI USSR State Committee

for inventions and discoveries P3035, Moscow, Zh-35, Raushsk nab., d.4 / 5

Proizv1:) a polygraphic enterprise, Uzhgorod, Projecto st., 4

Proofreader M. Pojo

Claims (1)

DEVICE FOR DESTRUCTION OF MONOLITHIC OBJECTS by ed. St. No. 1065595, characterized in that, in order to increase the reliability of the device by increasing the durability of the sliding cheeks, the surfaces of the sliding cheeks on the side of the spacer wedge are made with longitudinal protrusions having a cross-sectional shape of segments whose symmetry axis passes through the mating points of the protrusions of the spacer 'wedge with each other, and these points and the point of contact of the protrusions of the spacer wedge with surfaces not in contact with the sliding cheeks are located on arcs concentric to the arcs of segments transverse to cheny respective sliding cheeks. Yu yo GO GO CO