SU1377387A1 - Apparatus for breaking blocks off solid body along hole line - Google Patents

Abstract

The invention relates to a device for spalling blocks from a monolith, and may be. used in stone mining and stone processing in industrial production. The purpose of the invention is to expand the technological capabilities of the device by adjusting the length of the locking korea. At the working end of the power cylinder (C) 1 installed pressure element 2. At the non-working end of the cylinder

Description

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pa 1 perpendicular to its longitudinal axis is rigidly mounted supporting beam 10. At the edges of the latter, transverse holes that are symmetrical with respect to the longitudinal axis of cylinder 1 are made. In the latter, the threaded ends with tension nuts of the traction rods of 8 koreas are omitted. At opposite ends of the C 8, there are reverse wedges in the form of truncated cones. Sliding cheeks (W) 4 are attached to inclined surfaces of the wedges with internal beveled surfaces. The latter are cantileverly clamped in a positioned coaxially on C 8 by moving the valve longitudinally and turning the tubular bushing (B). In the latter, a pair of locking L-shaped C 6s rigidly connected to Sch 4 is fixedly mounted.

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The transverse parts of the C 6 enter the transverse parts of the L-shaped grooves B. Perpendicular to these grooves in B, a pair of straight parallel grooves is made. Under them, diametrically opposed projections are screwed on C 8 between the wedge and B thrust nut 7. A spring 9 is installed between the nut 7 and the ends Sh 4. When installing the bore holes in adjacent boreholes of the device, turn B to align its straight grooves with the protrusions of the nut 7. At the subsequent rotation C, the transverse parts C 6 coincide with the transverse parts of the L-shaped grooves B, releasing the compressed spring 9. Relying on the nut 7 and U 4, the spring 9 extends C 8. In doing so, U 4 is engaged in the engagement with the hole. 3 il.

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The invention relates to a device for spalling blocks from a monolith along a drilling line and can be used in the stone mining and stone industry.

The aim of the invention is to expand the technological capabilities of the device by adjusting the length of the locking korea.

Figure 1 shows the device in. holes with a longitudinal section of the locking bar; figure 2 is a view along arrow A in figure 1 on fig.Z - section bb in figure 1.

The device contains a power cylinder 1, with a pressure element - a rod 2 at the working end, a device 3 for sealing and stop cor. Each stopping bark is formed by traction rods and spreading cheeks 4, cantilevered in a tubular bushing 5, in which locking L-shaped rods 6 are permanently installed, with transverse parts (stoppers) in the transverse parts of the L-shaped grooves of the tubular bushing 5, oriented in the plane of the locking korea. The second pair of straight parallel grooves is made in a plane perpendicular to the planes of the L-shaped grooves and has a groove width greater than the width of the radial protrusions of the support nut 7. The support nut is installed by threaded connections on the traction rod 8 of the locking bar and its bottom face the surface rests on the end surface of the spacer-spring 9, pressing it against the end surface of the flange of the cylindrical cup of the sliding cheeks. The core 8 of the lock bark is threaded on the torx through the through transverse guide holes of the longitudinal beam 10

5 with the end of the power cylinder housing by means of a tension nut.

The carrier beam 10 is rigidly mounted on the non-working end of the power cylinder perpendicular to its longitudinal

20 axis. The through guide holes are located on the edges of the beam 10 symmetrically with respect to the longitudinal axis of the cylinder 1. The rods are parallel to the longitudinal axis and have reverse wedges in the shape of truncated coyuses on the ends opposite to the threaded ends. Sliding cheeks adjoin their internal bevelled surfaces to inclined surfaces.

30 reverse wedges. Tubing bushing

coaxially mounted on the pull rod with the possibility of rotation and longitudinal movement. L-shaped and straight grooves are arranged in pairs diametrically opposite and longitudinally with access to the end of the tubular sleeve facing the reverse wedge. The radial protrusions of the nut 7 are located diametrically opposed and made under the straight grooves of the tubular hub.

The device works as follows.

The press rod 2 together with the sealing device 3 is moved upwards, preparing; to the working cycle. Then the device is installed in the hole (well) in the stone, which is filled with liquid, and the stop bark is installed in the adjacent holes (well). For this, the locking bar with the spacer spring 9, which is in the compressed state, is lowered into the hole (well) to a predetermined depth of pinch. Turning the tubular bushing 5 clockwise aligns the straight grooves of the bushing 5 with the protrusions of the stop nut 7. When the tubular bushing is subsequently rotated, the transverse parts of the L-shaped rods 6 coincide with the transverse parts of the L-shaped grooves of the sleeve 5, releasing the spacer spring 9. Under the action springs 9 supported by their end surfaces on the end surfaces of the support nut 7 and the ends of the cheeks 4, the pull rod 8 with a reverse wedge extends relatively symmetrically arranged sliding cheeks with beveled inner surfaces M, entering them into engagement with the inner surface of the hole (well) in a predetermined position. For the subsequent reliable coupling of the locking bar with the inner surface of the hole (well), the upward pull rod 8 of the locking bar is increased up to the required value by rotating the tension nuts.

When blocks of rock are destroyed in the plane of drilling holes, the contact of the outer surface of the sliding cheeks with the inner surface of the hole occurs, which allows free removal of the locking bar from the array. After that, I compress the spacer spring by jointly moving the pull rod

the core and the sliding cheeks towards each other, and moving the tubular bushing along the L-shaped grooves relative to the L-shaped rods up to the stop, the compression of the spacer spring is fixed by turning the tubular bushing in the opposite direction. If, for some reason, Q does not happen to destroy the array, then release carrier beam 10 and move the stop measles down.

The destruction process with the use of the device is not always carried out because of the increased strength of some blocks or insufficient spacer force. Therefore, it is necessary to remove the locking cores from the drill holes in order to prepare the device for the next cycle of loading. At the same time, the internal surface of the hole in the places of its contact with the sliding cheeks is destroyed, which does not ensure the subsequent reliable installation of the device in this hole at the same level.

The proposed device allows adjusting the installation depth of the sliding cheeks.

Claims (1)

Q claims A device for spalling blocks from a monolith along a line of bore-holes, comprising a ram with a pressing element at the working end, a carrier beam rigidly mounted on the non-working end of the ram perpendicular to its longitudinal axis and having transverse bores symmetrically relative to the longitudinal axis of the ram cylinder, retaining bores parallel to the longitudinal axis of the power cylinder of the draw rods missed by threaded ends with tension nuts in the holes of the carrier beam and having opposite ends Ah, reverse wedges in the form of truncated cones, and sliding cheeks, adjacent internal beveled surfaces to inclined reverse wedge surfaces, in order to expand the technological capabilities of the device by adjusting the length korea lock, each stop measles is supplied coaxially installed- 5 th traction rod with the possibility of rotation and longitudinal movement of the tubular sleeve with pairs of diametrically opposite L-shaped five 0 five and straight grooves extending to its end facing the reverse wedge, with a stop nut with diametrically opposite radial protrusions under the straight grooves of the tubular sleeve screwed on the pull rod between the reverse wedge and the tubular sleeve, fitted with a spacer spring mounted on Type A Figg a pull rod between the stop nut and the ends of the sliding cheeks facing it, and the G-shaped rods rigidly connected with the sliding cheeks and the transverse portions in the transverse parts of the L-shaped grooves of the tubular bushing with its buttress resting against the radial projections of the resistant the nuts. 6-5 FIG.