SU1218106A1 - Arrangement for breaking blocks off monolithic body along blasthole line - Google Patents

Description

The invention relates to devices for separating blocks of rocks and monoliths and can be used in the stone mining and stone processing industry.

The aim of the invention is to improve the quality of the directional split by the directional use of the efforts of the expansion of the locking korea to split.

FIG. 1 schematically shows the proposed device; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one.

The device contains a ram 1 with a pressure element 2, a device 3 for sealing. Each stop measles contains a hollow tube 4, at the end of which a pair of oppositely installed sliding cheeks 5 with transverse notches along the outer surface is cantilevered, the notch pitch size decreases towards the exposed surface of the rock mass () and a pair of sliding cheeks 6 with longitudinal points, located in the direction of the split monolith. A rod 7 is movably mounted into the inner conical surface of the pipe, with an enlargement at the end in the form of a reverse cone, which is threadedly connected through guide holes and tensioning elements of the supporting element in the form of a beam 8 with the non-working end of the power cylinder 1.

The device works as follows.

The mountain massif is contoured with holes by the geometrical size of the block to be cut off. The pressure rod 2, together with the sealing device 3, is moved upwards, preparing the device for a working cycle. The device is then installed in a bore hole (well) in a stone that is filled with liquid, and

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VNIIPI Order 1100/42 Circulation 470 Subsidiary Subsidiary PPP "Patent, Uzhgorod, ul. Project, 4

pour into adjacent holes (wells). For this, the pipe 4 with the rod 7 installed in it is lowered into the bore-holes and introduced into the hole of the beam of the supporting element. With 5 of this, the cheeks 6 are positioned in the direction of the split of the monolith and the rod is moved upward by a tension element in the form of a nut. Due to the translational movement of the conical conjugate pair, the cheeks 6 are pressed to sharpen the side walls.

About the hole, thereby creating stress concentrators in the direction of the split. At the same time, the notches of the cheeks 5 are pressed against the inner surface of the hole and are inserted into the mountain massif, creating the necessary force to grip the device with the massif. Since the amount of movement of the cheeks 5 depends on the size of the cantilever, then the amount of incision of the notches in the array varies in height of the cheeks. Consequently, the notch pitch should decrease in the direction of the exposed surface of the rock mass. After providing sufficient force to adhere the device to the mountain range, the tool 3 is pulled out to be sealed in the direction of the hole. Then, the pressing rod 2 of the power cylinder 1 creates a pressure of the fluid in the borehole sufficient to separate the block from the rock mass. Upon reaching this pressure and the subsequent separation of the block, the sealing of the hole of the hole occurs, and the power cylinder 1 under the action of pressure in the hole tends to move upwards. In this case, the rods 7, moving upwards, produce the subsequent spreading of the cheeks 5, ensuring the grip of the device with the mountainous array. The application of the invention permits the creation of stress concentrators in the direction of the separation of the block from the rock mass and reliably fix the device with the rock mass.

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Claims (3)

1. A DEVICE FOR SPLITING BLOCKS FROM THE MONOLITH ON A STRING OF SKINS, including a power cylinder with a pressure element on the working end, locking anchors located on both sides of the power cylinder symmetrically and parallel to its longitudinal axis, and a supporting element connecting the locking anchors to the non-working end of the hydraulic cylinder, characterized in that, in order to improve the quality of directional cleavage by means of directional use to split the efforts of the thrust of the locking anchors, each locking anchor is made in the form of a rod with end widening in the shape of the inverse cone and symmetrically arranged around the end broadening of two pairs of sliding cheeks with beveled inner surfaces adjacent to the surface of the cone, and the supporting element in the form of a transverse beam symmetrically mounted on the inactive end of the power cylinder with guide holes and tension elements coaxial with it at the ends, this rods with free ends installed in the guide holes with the possibility of longitudinal movement and are connected with tension elements, and the sliding cheeks are connected with a pedestal beam, moreover, one pair of sliding cheeks is oriented perpendicular to the plane of location of the anchor anchors, and their outer surfaces are made with longitudinal sharpenings oriented in this plane. 2. The device according to π. 1, characterized in that the second pair of sliding cheeks is oriented parallel to the plane of the locking anchors, and their outer surfaces are made with transverse notches. 3. The device according to claim 2, characterized in that the transverse notches are made in increments decreasing towards the narrowing of the cone.