SU1745925A1 - Load-bearing member - Google Patents

Abstract

Use: directional destruction of rocks and concrete. The body of the force element is formed by longitudinal diametrically opposed sliding cheeks and end caps, an elastic tubular chamber is installed between the cheeks, which is connected with the fittings for supplying the working fluid. To restrict the stroke of the cheeks and return them to their original position, there are bars that are longitudinally mounted in the direction of the slide on both sides of the chamber and enter with longitudinal edge thickenings in the expansion of the longitudinal grooves of the cheeks. The length of the bulges in the direction of expanding the cheeks is greater than the length of the bulges in the same directions. 1 Cpfla, 5 Il.

Description

The invention relates to mining and construction and can be used in crushing oversized pieces of mineral raw materials, in splitting large blocks of block stone, as well as for blast-free blasting in open pit mining and in underground conditions or in industry where large directional targets are required. force with limited movement.

A device for the destruction of monolithic objects is known, comprising longitudinal spacers constituting a cylinder with a longitudinal axial cavity with a tubular elastic sheath, end clamps with inlet fittings

the working fluid in the elastic shell, the nodes of limiting the stroke of the cheeks and return them to their original position.

The disadvantage of this device is the difficulty of interconnecting.

groups of signs that limit the progress of separation and ensure the return of the cheeks to their original position, which reduces the reliability of the power element.

The purpose of the invention is to increase the efficiency and reliability of the power element due to structural features that prevent rupture of the working elastic sheath when pressure is applied and there are no restrictive cheeks-supports for the borehole walls.

FIG. 1 shows the force element, a section in the plane of movement of the cheeks; in fig. 2 is a view A of FIG. 1; in fig. 3 shows a section BB in FIG. 1, in the absence of pressure in the working chamber; in fig. 4 - the same, when pressure is applied to the working chamber; in fig. 5 shows a section B-B in FIG. 3

The power element consists of sliding cheeks 1, between which the shell of the working chamber 2 is placed, is put on

VJ Ch

with about

ND SJ

hollow perforated assembly rod 3, which has a thread 4 at the ends for connecting hoses through which working fluid is supplied, in the lower part a cylindrical tank 5 for fastening and sealing the shell of the working chamber 2, for sealing the shell 2 is made with shoulder 6 the parts are reached by a sealing washer 7, which is clamped by bolts 8 between the head of the rod 5 and the working flange 9, on which there is a sample 10 and the corresponding threaded holes for the bolts 8. The figured mills the grooves 11 for placing the connecting strips 12 therein, and the shaped grooves 13 for accommodating the return springs 14. The cheeks 1 are joined by planks 12, which are inserted into the grooves 11 through the end of the cheeks, and the cheeks are pressed flat by springs 14 1 is inserted into the grooves 13. The joined cheeks 1 are put on the rod 3 and rest against the bottom flange 9, then the upper flange 9 is put on the rod 3 and the shoulder is pulled through the hole 15 and sealed by the washer 7. figurn cover 16 which presses erhny flange 9 to the end faces of the cheeks 1, shoulder seals the working envelope 6 and to achieve complete sealing flange 9 is biased by bolts 8 to the shaped cap 16.

Holes 17, 18 are drilled in the rod 3 for supplying fluid and removing air from the working chamber. Undercuts (sampling) 19 are provided to connect hoses or install plugs.

In order to prevent crushed chips from falling between the cheeks 1, steel curtains 20 are provided, which are fastened to the element assembled in the working position by bolts 21.

The power cell is prepared for operation as follows.

After assembly, a hose is connected to the lower end of the rod 3, through which fluid is pumped through the holes 17 and 18 into the working chamber after the air is expelled from the working chamber 2, the lower end of the rod 3 is silenced and the hose is connected to the upper end (or and the item is flipped over)

The power element works as follows.

The element is placed in the drilled hole or hole, along the length of the hole is held at the desired depth by a high pressure hose, through which through holes

17 and 18, the working fluid is supplied to the working chamber 2, the working pressure expands the chamber 2, its shell fits tightly to the cheeks and pushes them apart, as shown in FIG. 4, The shell can not break, so

as is under the conditions of volumetric compression, and part of it rests on the cheeks 1, and the rest part - on the bar 12. When the cheek moves apart, pressure is transferred to the walls of the hole, creating splitting forces. When split

The block of the stroke of the cheeks is limited by the size of the curly grooves 11, and the cheeks will be held by the bar 12, which at this stage will work to break, and its thickenings are calculated for shear. After relieving pressure

The working chamber of the spring 14 returns the cheeks to their original position, displacing the liquid through the holes 18, 17.

Claims (2)

Along with the improvement of working conditions and safety, the use of the proposed power element will reduce the damage from downtime of mining equipment. Claim 1 Power element comprising a body formed by longitudinal diametrically opposed sliding cheeks and end caps, an elastic tubular chamber longitudinally between the sliding cheeks and end caps, inlets the working fluid into the tubular chamber, the nodes of limiting the stroke of the cheeks and returning them to their original position, which is different, in order to increase the reliability of the power element, each node The limitation of the stroke of the cheeks is made in the form of two planks, longitudinally mounted in the direction of the sliding of the cheeks on both sides of the tubular chamber, rigidly connected with end caps and having thickening on the longitudinal ends, while in the sliding cheeks on the surfaces facing one another, longitudinal grooves are made under the slats with extensions under the bulges, and the length of the extensions in the direction of expanding the cheeks more than the length of the bulges in the same directions. 2. The element according to claim 1, characterized in that, in order to prevent destructible material from entering the gaps between the sliding cheeks, the power element is provided with curtains to close the gap between the sliding cheeks. 1G hp 9 $ 1 nineteen 13 1U Figz Schi 2 20 1Z eleven 12