SU1629453A1 - Churn drilling tool - Google Patents

Abstract

The invention relates to the construction and m. Used in the shock-cable drilling of wells for various purposes in hard rocks. The goal is to increase the drilling efficiency by cutting-cutting action. Snare for shock-cable drilling includes a chisel 1, a hollow hermetic rod 2 connected to it, anvil (H) 6 mounted above each other on the rod 2. The latter are made with diametrical grooves 7, one of which is vertical 8, and the other is inclined 9. The side surfaces of the upper slot are opposite to the side surfaces of the bottom slot. The strikers 11 are made with counter grooves 7 surfaces and fixed to the hammer 10 on the upper and lower ends. When the projectile is thrown off by the percussion mechanism of the machine, chisel 1 is buried in the face. The drummer 10 under the action of inertial forces arising from the impact of the bit on the face, moves downward, compressing the spring 12, until the impact interaction of the inclined surfaces of the lower striker 11c by the inclined sections 9 of the groove 7 of the lower H 6. This process is accompanied by the rotation of the striker 10 inside the hollow rod 2. Process ends with striking the vertical surface of the striker 11 against the vertical sections 8 of the walls of the groove 7. Then the drummer 10 moves upwards and hits the inclined surfaces of the upper striker 11 along the inclined sections of the walls of the groove 7 of the upper H 6. pouring down the inclined surfaces with the turn of the striker and hitting the vertical surfaces of the upper striker 11 against the vertical portions of the walls of the groove 7 of the upper H 6. After this, the cycle is repeated. 3 il. V-1

Description

The invention relates to the construction and can be used in the shock-cable drilling of wells for various purposes in hard rocks.

The aim of the invention is to increase the drilling efficiency by a shearing-cutting action.

Fig. 1 shows a tool for hammering; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 2.

The hammer drill rig contains a chisel 1, a hollow hermetic rod 2, scissors 3, and a cable lock 5 connected to the cable 4 of the drum rope machine.

At the inner ends of the hollow hermetic rod 2 are located anvils b, which are provided with diametrical grooves 7, Each wall of the groove 7 is made with equal length 8 vertical and inclined 9 sections. The upper anvil is made similarly to the bottom, while the inclined sections of the walls of its groove are mounted above the vertical walls of the lower anvil. The drummer 10 is mounted in the cavity of the hermetic rod 2 and is equipped at both ends with strikers 11 made with counter slots 7 surfaces. The striker 10 is bent with the help of spring 12 and elastically pressed to the upper anvil of the hermetic rod 2,

Snar d works as follows. When the projectile is thrown off by the percussion mechanism of the machine tool, the chisel 1 is buried with its blade into the face. Drummer 10 under the action of inertial forces arising from the impact of the chisel on the bottom, continues to move downward, compressing the spring 12, until the impact interaction of the inclined surfaces of its lower striker, located on either side of the projectile axis, with inclined sections 9 of the groove 7 of the lower anvil. The vertical component of this impact provides additional compressive stresses in the rock, and the horizontal components provide a couple of forceful forces to turn the bit at the bottom, which makes cutting of the rock. Such dynamic loading continues as long as the sloping surfaces of the striker slide along the sloping portions.

the walls of the groove. This process is accompanied by the rotation of the striker 10 inside the hollow sealed rod 2. The process ends with the impact of the vertical surface of the striker

the vertical sections 8 of the walls of the groove 7. During this impact, a pair of forces occurs, tending to turn the chisel on the bottom in the opposite direction. After the collision of the vertical surfaces of the striker and the anvil, the striker 10 from the elasticity of the impacted bodies and the energy of the compressed spring 12 moves upwards, strikes the inclined surfaces of the upper striker along the sloped sections of the groove walls of the upper

the anvil, glide along inclined surfaces with a turn of the striker to its original position and a blow of the vertical surfaces of the upper striker of the striker against the vertical sections of the groove walls of the upper anvil. After that, the cycle repeats.

Thus, in one shot cycle with a percussion mechanism of the machine, multiple dynamic loading of the bottom occurs, surpassing the fatigue properties of the rock. In this case, due to cleaving and cutting, its effective destruction occurs.

Claims (1)

Invention Formula A shock-drilling tool comprising a chisel connected to the chisel by a hollow hermetic rod secured in the rod one above the other anvil located in the rod between the anvil spring-loaded drummer and strikers attached to the drummer on the upper and lower ends, characterized in that , in order to increase the efficiency of the drilling process by the shearing-cutting action, the anvils are made with diametric grooves, one of the walls of which is vertical and the other is inclined, the strikers are with counter slots than the side surfaces the upper groove is located opposite the lateral surfaces of the lower groove, and the firing pin is mounted so as to interact with the upper anvil in the non-working position. 01 / S.3