RU1788235C - Device destruction of monolithic objects - Google Patents

Abstract

Usage: the destruction of rocks and concrete structures. SUMMARY OF THE INVENTION: A spacer element with sliding cheeks is mounted in a well. Liquid is supplied into the cavity of the power cylinder. The rod moves with the spacer element (RE) and the cheeks are bursting. They turn on the vibrator and create a variable radial load perpendicular to the axis of the RE. Under the influence of this load RE experiences an alternating cantilever bending. This facilitates the movement of RE between the cheeks and accelerates the destruction of the monolithic object. 3 ill.

Description

Ј The invention relates to the mining industry, and in particular to means for destroying rocks and concrete structures.

. It is an object of the invention to achieve failure efficiency by applying a variable radial load to the spacer element.

In Fig.1 shows a device in section; Figures 2 and 3 of section AA and BB respectively. ..; ..-... .... ::

The device consists of a power cylinder 1 with a stem 2, the spacer element 3 is made in the form of a truncated cone and is fixed with its smaller base at the end of the rod 2 (for example, using a thread). Sliding cheeks 4 are adjacent to the lateral surfaces of the spacer element 3 with their inner surfaces, which in turn are pivotally mounted on the supporting element 5. The cheeks 4 are pressed against the spacer element 3 by an annular spring 6.

The carrier element 5 is made in the form of a plate with a central hole 7 for the rod 2, and the spacer element 3 is provided with spherical joints 8, spring grips 9 and a vibrator 10 with an unbalanced rotating mass. In this case, the supporting element 5 is connected to the power cylinder 1 by means of the eckW spheres of the hinges 8 and spring grippers b, and the mother pair. The spring clamps 9 enter the cutout T1 of the end wall 12 of the actuator 1. The vibrator 10 is mounted on the free end of the actuator 1, while the axis of rotation of the mass coincides with the axis of the rod.

During operation of the device, its spacer element 3 and sliding cheeks 4 are placed in a hole (or well) 13 previously drilled in a destructible monolithic object 14. The device operates as follows.

After placing the spacer and sliding cheeks in the bore of the monolith 14 is tired

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The equipment is connected to the power unit and liquid is supplied under pressure to the rod cavity of the force cylinder 1, as a result of which the rod 2 moves towards the vibrator and the spacer element 3 attached to it extends the sliding cheeks 4 into the walls of the borehole 13. creating the necessary force on them. Then turn on the vibrator 10. This leads to the fact that under the influence of a variable radial load created by the vibrator. perpendicular to the axis of the wedge, the housing of the ram will rotate on spherical joints 8 relative to the supporting element 5, forming a kinematic pair that is insured against being disconnected by spring grips 9. ...;.

Given that from the vibrator the power cylinder at each moment of time experiences a load in a strictly defined direction and transfers it through the rod 2 to the spacer element 3, the latter will experience an alternating cantilever bending during operation of the vibrator, which leads to the bending of the axis of the spacer element at each time and redistribution of contact pressures on its surface. An increase in contact pressure on the compressed side of the spacer element causes it to return downward, and on the stretched side at the same time, the resistance to movement of the spacer element decreases due to a decrease in contact pressure. The successive circular repetition of the indicated phenomenon on the diametrically opposite sides of the conical spacer element gives rise to a buoyant force acting along the axis in the direction of its smaller base. Thus, in the proposed device, in addition to the power cylinder, the wedge is also affected by an additional buoyant force arising from a variable radial load and coinciding in direction with the main force. This contributes to the movement of the spacer between the sliding cheeks and, consequently, to a faster increase in critical

stresses in the monolith, its early destruction.

After the destruction of the monolith, the device’s vibrator turns off, and the fluid supply

switch so that it enters the chamber above the piston. As a result, the rod of the power cylinder with the spacer element is moved to its original position, and under the action of an annular spring 6

the sliding cheeks also return to their original position. After that, the device is transferred to a new monolith or freed from the power plant. The use of the proposed device in the destruction of the next monolith is performed as described.

The use of the proposed device for the destruction of monolithic objects can reduce the number of drill holes

in monolith, i.e. for normal operation of the device, one hole is sufficient. In addition, due to the occurrence of additional force, the destruction time of monoliths by this device is reduced, and the distance

between holes with the simultaneous operation of several similar devices can be increased in comparison with the use of known devices.

Claims (1)

The claims A device for destroying monolithic objects, including a power cylinder with a rod, a truncated cone-shaped spacer element, fixed with a smaller base at the end of the rod, and a bearing element with sliding cheeks pivotally mounted on it, so that , in order to increase the destruction efficiency by applying a variable radial load to the spacer element, it is equipped with a vibrator with an unbalanced rotating mass, spherical joints and spring grippers, the bearing element is made in the form of plates with a central opening for rod and is connected to the power cylinder by means of spherical joints and spring grippers in a kinematic pair, and the vibrator is mounted on the free end of the power cylinder, while the axis of rotation mass coincides with the axis of the rod. &. 9sh. d Editor S. Kulakova Compiled by S. Ivanov Tehred M. Morgenthal Proofreader M. Weaver