SU979629A1 - Apparatus for drilling blast holes - Google Patents

Description

(54) DEVICE FOR DRILLING BORES

one

The invention relates to the mining industry, in particular to portable devices for drilling holes.

A device for drilling holes is known, comprising a hand drill, a mechanical feeder in the form of a drum with a rope, one end of which is fixed on the stem of the cylinder of the supporting column, and the other end to the drum of the winch 1.

The disadvantages of this device are that, due to the sufficiently large weight of the supporting column, the manual transport of the device is coupled with considerable physical effort. In addition, in order to change the drilling rate, it is necessary to stop the drilling process and adjust the friction clutch of the winch drive and drill drive.

The closest in technical essence and the achieved result to the proposed is a device for drilling holes, including a hand drill with a body, a cable feeder, in the body of which a gearbox and a drum with a rope wound on it, the element

fixings in the excavation, ratchet mechanism, latch and drive rotation of the drum, and the switch of the drive rotation of the drum is installed on the handle of the drill. The drill is fed to the bottom in the device by winding a feeder fixed to the drill body on the drum, with one end of the rope attached to the bottom of the chest 2.

The disadvantage of this device is that, due to incomplete mechanization

The drilling process, the weight of the drill along with the feeder is held by the driller. In addition, part of the drill power is expended on the rotation of the power shaft for the feeder. This leads both to a decrease in the rate of drilling, and to the preservation of the difficult working conditions of the drillers.

The purpose of the invention is to facilitate the working conditions of the drill while increasing the drilling rate.

20 This goal is achieved by the fact that in the device for drilling cranks, including a hand drill with a body, a cable feeder, the case of which is equipped with a gearbox and a drum with a rope wound on it, a fastening element in a mine, a ratchet mechanism, a latch and a rotation drive of the drum, the drum rotary drive switch is mounted on the drill handle, the fastening element in the excavation is mounted on the cable feeder body, the drum of which is made in the form of sections of different diameters, and one of the rope ends is fixed to the body drill.

FIG. 1 shows a device for drilling knobs located in the mine face; in fig. 2 - mechanical feeder, general view.

The drilling device includes a mechanical feeder 1 with a pull 2 with a rope 3 and a manual drill bit 4 with a drill 5. The mechanical feeder of the drill unit has a housing 6 with a fastening element 7, an independent drive 8, a multisection drum 9 of variable winding radius with the ratchet mechanism 10 and the latch 11, the gearbox 12. The remote control switch of the feeder together with the drill drive switch (not shown in the figure) are mounted on the body of the drill 4.

The device works as follows.

A mechanical feeder 1 is suspended in the upper part of the mine workings, in the bottom of which it is necessary to drill holes, the suspension of which is carried out by means of a support frame or temporary safety support. A drill bit, equipped with a drill 5, is attached to the rope 3 of the feeder 1 and by turning on the drill 4, the drill 5 is rotated.

When the feeder is turned on 1, the rope 3 with a force T is wound on the drum 9 of the feeder and moves the drill with the drill towards the bottom with a force P.

Maintaining the predetermined drilling direction is achieved by force M from the weight of the drill 4 (and from the force applied in this case to the drill from above, down by the driller. If necessary, if the speed of the rope is not sufficient for high-speed drilling, an increase in the speed of winding of the rope 3 is achieved by pererepleniya rope on the section of the drum 9 with a large radius of winding or by replacing the gears in the gearbox.

Thus, due to the force in the rope 3 of the feeder, during drilling, a mechanical, adjustable feed of the drill to the bottom and retention of the drill in suspension is achieved.

When using the proposed device, the working conditions of the driller are facilitated due to the lower weight held in the hands of the worker. In addition, an increase in drilling rate is achieved by maximizing the use of power.

the drills only create torque (the power supply is provided by the separately powered drive of the feeder).

Claims (2)

Invention Formula A device for drilling holes, including a hand drill with a housing, a cable feeder, in the housing of which a gearbox and a drum with a rope wound on it are placed, a fastening element in the excavation, a ratchet mechanism, a latch and a wire of rotation of the drum, the handle of the drill, characterized in that, in order to facilitate the working conditions of the driller while simultaneously increasing the drilling speed Yen in the form of sections of different diameters, and one of the ends of the rope is fixed on the drill body. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 273114, cl. E 21 11/00, 1968. 2. Reference “Machines and equipment for coal mines, M.,“ Nedra, 1979, p. 277.