SU1682554A1 - Rock distribution device - Google Patents

Abstract

The invention relates to the mining industry and is intended for the destruction of rocks during preparatory workings in hard rocks by a drilling and blasting method. The purpose of the invention is to increase the efficiency of use of the device due to mechanization of operation mode control. The device for rock destruction contains a drilling mechanism with a manipulator, a drill rod 4 with a wedge-type element and a fixed steady. In this case, the shock-wedge element is made in the form of a threaded sleeve 6 placed on the thread 5 on the drill rod 4. On the outer surface of the sleeve 6 there is a groove 1 capable of interacting with the stopper 3 mounted on the manipulator. Initially, when drilling a bore hole in a rotary percussion method, the feed speed and rotational speed are such that the sleeve 6 on the stopper 3 must remain in place. stop sleeve 6 in the face. In this case, the sleeve 6, moving with the rod 4, freely descends from the stopper 3. The shock mechanism and the forward feed are turned on without rotation, and strikes are made on the borehole mouth.

Description

FIG.

The invention relates to the mining industry, in particular, to the destruction of rocks, and is intended primarily for use in carrying out preparatory workings in hard rocks in a harmless manner.

The aim of the invention is to increase the efficiency of use of the device by mechanizing the control of the operating mode.

Figure 1 shows the end of drilling a hole; figure 2 - the return of the rod to its original position; FIG. 3 shows the start of breaking off; 4 shows the end of breaking off; figure 5 - the return of the rod to its original position; 6 shows the beginning of the drilling of the next hole; 7 - the relative position of the stopper and sleeve.

A fixed steady rest 2 and a spring-loaded stopper 3 are mounted on the manipulator of the drilling mechanism 1. Through the steady rest 2 a drill rod 4 passes with a power thread 5 and a crown at the end. The rod 4 carries a threaded sleeve 6 with a conical surface facing the face, and a groove 7 in which the manipulator stopper 3 can enter with two cobwebs 8.

The device works as follows.

The mechanisms of rotation, percussion and feed of rod 4 to the bottom (not shown) and drill hole in a rotational percussion manner are included. At the same time, the feed rate and rotational speed are matched so that the sleeve 6, held by the stopper 3 from rotation, remains in place. At the end of the drilling of the hole, the rod 4 and the sleeve 6 occupy the position shown in FIG.

The rotation of the rod 4 is reversed and the reverse feed is communicated to it with such speeds that the sleeve b, kept by the stopper 3 from rotation, remains stationary. At the end of the reverse feed, the sleeve 6 is located at the front end of the rod 4 (FIG. 2).

The forward feed of the rod 4 is turned on without rotation up to the stop of the sleeve 6 in the bottom. In this case, the sleeve 6, moving with the rod 4, freely comes off the stopper 3 (FIG. 3).

The percussion mechanism and forward feed are turned on without rotation and the blows are applied to the hole mouth. As the rock breaks off, the rod 4 is advanced with the sleeve 6. Impact energy is transmitted to the sleeve 6 through a power thread on the rod. If the skyscraper occupy the spatial position shown in Fig. 7, the breaking off occurs along the line A. A. During the breaking-off, the sleeve b does not rotate, as it self-stops on the thread. IF you need to break off on a different line, then barbell 4 with sleeve 6, not

interacting with the stopper 3, turn to the desired angle. The position of the parts of the device at the end of the breaking off is shown in FIG. 4.

The return feed is turned on without rotation and the rod 4 is retracted from the bottom until the stopper 3 enters the groove 7 of the sleeve 6. If the sleeve is in the position preventing the stopper 3 from entering the groove 7, turn the rod to the required angle. Position

parts shown in figure 5.

The drilling of the next hole is shown in FIG. 6.

The device can be used for cleaning and tunneling works. On

cleaning works it is advisable to drill holes in parallel to the face and break the rock into the cleaning space. In the preparatory work, the holes must be drilled perpendicular to the face, therefore for

breaking off the rock, it is necessary to pre-form a cavity. It can serve as a well, drilled in advance in the direction of the development. In less durable rocks, the proposed device can be used. In this case, the rock around the hole is destroyed not by breaking it off, but by crushing, crushing. The hole thus extended can be used to break rock volumes from other holes into it.

In figures 1 and 4 shows the bearing rod in the lunet smooth area, and in figure 2, 3, 5 and 6 - threaded. May be provided for bearing the same diameter area - threaded. To do this, you need to increase the length of the threaded section.

Claims (1)

The invention of the device for the destruction of rocks including a drilling mechanism with a manipulator, a fixed rest, a drill rod with a shock-wedge element, characterized in that, in order to increase the efficiency of the use of the device the account of the mechanization of control of the mode of operation, the shock-wedge element is made in the form of a threaded sleeve placed on a thread made on the drill rod, while on the outer surface of the sleeve a groove is made, and a stopper is installed on the handle, with the ability to interact with the sleeve groove. 1 P R 3 7 WITH l / /// F / XX / UX / XX L (JL / 77/77 / S / S Fy H3f / XX XXX XXX f / 7 FIG. five Fig.b