SU1514898A1 - Device for expanding wells - Google Patents

Abstract

The invention relates to mining and is intended to form boiler cavities in strong rocks. The goal is to expand the operational capabilities by increasing the diameter of the cavities formed during expansion. For this, the devices 2, which are hinged on the housing 1, are made in the form of the sleeves 4 and spring-loaded rods 5. The latter are placed in the sleeves 4 with their ends extending beyond their edges with the possibility of moving inside them and the ends interacting with the striker 3 located inside the body The rod 5 is fixed with a rock-breaking element in the form of a roller cutter 7. The hinged connection of the expander with the housing 1 is made in the form of two identical diametrical axes 9 located in the walls of the housing 1 and the liner 4. The expanders 2 rotate in The axles 9, the rods 5 are lowered relative to the liner 4. A spring 6 located in the gap between the rod 5 and the liner 4 is compressed and the cone 7 hit the borehole walls while simultaneously rotating around the rods 5. The carbide inserts 8 on the cutting surfaces of the cone 7 are inserted into the breed and destroy it. The length of the rods 5 provides the required dimensions of the boiler cavities. The rocks are destroyed by the cones 7 under the action of an impact in the axial direction and the direction of extension of the rods 5, which increases the productivity of the device. 1 hp f-ly, 2 ill.

Description

one

(21) 4359028 / 23-03

(22) 01/06/88

(46) 10/15/89. Vul. } 38

(71) Research and development

design institute

on problems. development of the Kansk-Achinsk coal basin

(72) R. B. Zhelukevich, V. A. Kovalchuk

and O.A. Blagodatska

(53) 622.233.051.77 (088.8)

(56) USSR author's certificate. № 825829-, cl. Е 21 В 7/28, 1979. USSR author's certificate NS 585282, cl. Е 21 В 10/40, 1914.

(54) DEVICE FOR THE EMISSION OF THE WELLS

(57) The invention relates to mining and is intended to form boiler cavities in strong rocks. The goal is to expand the operational capabilities by increasing the diameter of the cavities formed during expansion. For this purpose, the expanders 2 are hinged on the housing 1 of the device 1 and are made in the form of sleeves 4 and spring-loaded rods 5. The latter are placed in the sleeves 4 with an outlet facing their chromel

CO OS

eo

KI with the ability to move inside and their interaction with the ends located inside the housing 1 drummer with striker 3. On the rod 5 fixed rock-breaking element in the form of a roller cutter 7. 1 arnirnaya connection of the expander with the housing 1 is made in the form of two identical diametrical axes 9, located in the walls bodies 1 and sleeves 4. Expanders 2 rotate around the axes 9, the rods 5 are lowered relative to the sleeve 4. Located in the gap between

With the rod 5 and the sleeve 4, the spring 6 is compressed and the cones 7 strike the walls of the borehole, simultaneously rotating around the rods 5. The carbide inserts 8 on the cutting surfaces of the cones 7 penetrate into the rock and destroy it. The length of the rods 5 provides the required dimensions of the boiler cavities. The rocks are crushed by the cones 7 under the action of an impact in the axial direction and the direction of extension of the rods 5. Which exceeds the device's performance, .1 Cp. f-ly, 2 ill.

The invention relates to mining, specifically to drilling devices, and is intended to form boiler cavities in strong rocks found in blastholes, i. The purpose of the invention is to enhance the operational capabilities of the device by increasing the diameter of cavities formed in the depletion.

FIG. 1 shows the device in section, a general view; in fig. 2, section A-A in FIG. one.

The device (Fig. 1) consists of a cylindrical hollow body 1 and two expanders 2 attached to the body with the possibility of extending from the center of the well to the periphery and folding back. Inside the case, there is a pneumatic impact mechanism in the form of a striker, which has a firing pin 3 for transferring the impact energy to the expanders 2. Each expander 2 consists of a SLEEVE 4, v inside which is a rod 5 mounted with axial movement inside the sleeve 4. In the gap between the stubble 5 and a sleeve 4 has a compression spring 6 installed on the rod 5. At the lower end of each stern 5, a rock-breaking tool in the form of a roller 7 is installed coaxially with it, with the possibility of free rotation around the rod. The cutting surface of the cutters 7 is equipped with carbide inserts 8. The protruding part from the side of the upper end of the rod 5 is in contact with the striker 3. The length of the upper protruding part of the rod 5 is not more than the difference of the lengths of the spring 6 in its

0

five

five

0

five

0

five

free and loaded states. Each expander 2 is connected to the housing 1 by means of two identical diametrically located axes 9. connecting the hinged sleeves 4 to the housing 1. The rods 5 are made in one piece and are not connected to the axes 9.

The device works as follows.

A housing 1 with expanders 2, being in addition, is attached to a drill rod (not shown) and lowered into a pre-drilled well to the required depth, i.e. to the depth of the strong rock, in which it is necessary to perform the boiler cavity. The drill rod is rotated and the air-impact mechanism is activated. The striker 3 strikes the ends of the rods 5. The dilators 2 rotate - around the axes 9. The rods 5 are lowered relative to the hydra.

4. The springs 6 are compressed, the cone 7 hit the borehole walls and simultaneously rotate around the rods.

5, solid carbide inserts 8 are introduced into the rock and destroy it. When the striker 3 moves upwards, the rod 5 also moves upwards under the action of the spring 6. This movement repeats with a frequency equal to the frequency of impacts of the pneumatic impact mechanism. The height of the cat-f cavity can be increased with the help of axial feed to the drill rod. After the formation of the boiler cavity, the operation of the pneumatic shock mechanism is stopped and the device is removed from the well. If several inclusions of strong rocks are found in the well, the boiler cavities

performed in each sequence, starting from the top.

The achievement of the required dimensions of the boiler cavities is ensured by the appropriate length of the rods 5, installed with the possibility of axial movement and transmitting the impact energy from the pneumatic impact mechanism to the cones 7 that directly destroy the rock. The cutters 7 destroy the rock under the action of an impact in the axial direction and in the direction of increasing the rods 5, which helps to increase the productivity of the device. Springs 6, mounted on rods x 5. contribute to improving the wear resistance of the roller cutters 7.. Taking shock load. Formula of Invention

Claims (2)

1, A well expansion machine, comprising a housing with a positioned 0 five 0 inside the drummer interacting with the extenders with a rock-destructive tool, hinged on the body, characterized in that, in order to expand operational capabilities, the extenders are made in the form of sleeves and spring-loaded rods placed in the sleeves with the ends of their ends with the possibility of movement within them and the interaction with the ends with the strikers, and the rock-destroying tool is fixed on the rod and made in the form of a roller cutter. 2. Devices according to claim 1, characterized in that the hinged connection of the reamer with the body is made in the form of two identical diametral axes located in the walls of the body and the sleeve. 2