SU891930A2 - Arrangement for working soft rock by the caving-in method - Google Patents

Description

(54) DEVICE FOR THE DEVELOPMENT OF SOFT BREEDS WAY OF COATING

I

The invention relates to machines and devices for use in the mining industry, and can be used in open pit mining.

According to the main author. St. No. 325382, a device for the development of soft rocks by the method of collapse is known, which includes a self-propelled traction mechanism mounted on the roof of the ledge, a two-cable suspension and a working body with a drive 1.

The device is equipped with a rotary platform, mounted on the platform of the traction mechanism with the help of a hydraulic cylinder and hinges, the axes of which are parallel to the longitudinal axis of the platform.

When this device is operated, the angle of inclination of the rotary joint, depending on the angle of the step, is varied by means of a hydraulic cylinder. But with an increase in the height of the ledge, the safety berm increases accordingly (the minimum safe distance from the edge of the ledge to the supporting plane of the undercarriage) and, as a result, the console swivel plate; ledge and entrance toe

when you change the angle of inclination. This leads to an increase in the length of the undercarriage of the cutting body, an increase in weight and a decrease in reliability.

The purpose of the invention is the expansion of technological capabilities.

This is achieved by the fact that the device for mining soft rocks is equipped with an entry platform equipped with an entry platform, which is connected to the turntable by means of a horizontal hinge located in the lower part of the latter, and when the entrance platform turns.

The drawing shows the device, the overall appearance.

It includes a self-propelled traction unit 1, a traction winch 2, a connected rope 5, a suspension bracket -3 with a working body 4, a rotary platform 5 on which an entrance platform 7 is attached by means of a hinge 6, which changes the angle of inclination by means of a hydraulic cylinder 8.

When operating the device at various types of bluntness, the angle of inclination of the latter can vary from 35 ° to 45 °. The angle of inclination of the entry platform 7 is set equal to the angle of slope of the ledge by the hydraulic cylinder 8 relative to the hinge 6. In this case, the plane of the entry platform becomes an extension of the plane of the ledge. With the help of the winch 2, the working body 4 moves along the step of the ledge, clearing the rock layer. Upon reaching the upper edge of the ledge of the canal, the trolley of the working body 4. continues to move in the same direction and drives into the entrance platform 7, after which the self-propelled traction unit 1 passes along the ledge front to a new approach.

The use of the invention will improve the efficiency of the device at high ledges, as well as reduce the metal intensity of the mechanisms.

Claims (1)

Invention Formula Device for the development of soft breeds by the method of collapse by author. St. No. 325382, characterized in that, in order to expand technological capabilities, it is provided with an entry platform, which is connected to the turntable by means of a horizontal joint, located in the lower part of the latter, and a drive for turning the entry platform. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 325382, cl. E 21 C 47/00, 1970.