RU1802072C - Holder for drill rods - Google Patents

Description

low, it moves to the position when the rod 12 is placed on the axis of the drilling (see Fig. 3). The lower end of the rod 12 is above the upper end of the rod of the drill string 19 (see, Fig. 2). Next, the application is filed in the piston cavity of the cylinder 5, the lowering of the sector 1 begins, the internal thread of the rod 12 is pushed against the external thread. The rod 19, thereby fixing the lower end of the rod 12. The sector 1 continues to lower until the cylinder 5 is in full stroke as a result of which the cylindrical part of the rod 12 leaves the cylindrical socket 18 of the sector 1, which allows the rods 12 to exit the sector 1 (this position is shown in Fig. 2 by dashed lines).

Next, the upper end of the rod 12 is connected to a spindle of a rotator (not shown) having an internal thread. The rod is kept from turning in this position by a groove 14 interacting with the flats 13 of the rod. As a result of these operations, the upper and lower ends of the rod 12 are fixed, which creates the conditions for moving the cartridge to its former position, which is carried out by applying pressure to the rod cavity of the cylinder 7 after releasing the latch 17.

The extension is completed by screwing the rod 12 onto the rod 19 using a rotator,

At the next build-up of the drill stand, the rod 11 is likewise fed to the axis of the drill. In this case, the rod of the cylinder 7 makes a full stroke.

After the completion of the well drilling, the drill stand is disassembled; as the disassembly is completed, the rods are placed in the cassette. This process is performed in reverse order to the boom extension process discussed above.

The use of the proposed device simplifies the design and improves drilling productivity.

Determination of the approximate economic effect of the use of the proposed device. We will calculate the economic effect in relation to the basic object - the SBSh-250MNA machine, mass-produced by the Voronezh mining and processing equipment plant.

The said machine has a cassette, the design of which requires the presence of additional lunettes that hold the rods on the drilling axis after removing the cassette. Extra time is required for the inlet and outlet operations of the lunettes on the drilling axis.

The use of the cassette of the present invention will reduce the indicated time costs since lunettes are eliminated; this will increase drilling productivity by approximately 3%.

During a year (300 working days) during two-shift operation of the walls of the SBSh-250 MNA, 55,200,333,000 m of wells are drilled.

By increasing productivity, he will additionally drill

33000 0.03 990 m

An additional economic effect is created by simplifying the design.

Claims (1)

The claims Cassette for drill rods, including mounted on supports mounted on the mast, rotary shaft, mounted on the rotary shaft upper sector with a groove for drill rods and a lower sector with a groove for flats of drill rods and cylindrical sockets, a drive for turning sectors and an axial displacement drive for drill rods, characterized in that, in order to reduce the metal consumption, the groove of the upper sector is made with the possibility of covering the rod along the outer diameter, the lower sector is fixed on the rotary shaft with limited movement along the last under the action drive axial displacement of the rod and receive torque from the rotary shaft. fia.3 Bb