SU1756553A1 - Drilling machine - Google Patents

Abstract

Use for drilling holes when driving mines Invention The mechanism for feeding a drill head that is mounted on a skid includes a pneumatic drive for rotating the screw with external grooves and a nut mounted on the screw that is tied to the slide for increasing machine durability by eliminating abrasive particles from contacting the nut with with a screw and lubricants of the latter with an oil aerosol, the screw is hollow and has radial channels with access to the outer grooves, while the exhaust channel of the pneumatic actuator communicated with the internal cavity of the screw. 2 Il.

Description

The invention relates to mining, namely to machines for drilling holes and wells.

Known drilling machine containing frame, pneumatic drive mechanism, screw head screw nut, slide, and drilling tool

A disadvantage of the known boring machine is that the wines and the nut in it are subject to intensive abrasive wear and require daily lubrication to prolong the service life, which leads to additional time costs and high consumption of lubricants

A drilling machine is also known, comprising a frame, a pneumatically driven feed mechanism, a screw nut, a slide, a drilling tool and a boring machine.

In the described construction, the screw is lubricated by an oil spray applied to the screw from the exhaust holes of the percussion mechanism / drill machine, which reduces the time of auxiliary operations to maintain the drill machine, as well as the cost of lubricants

A disadvantage of the known boring machine is that the lubrication of the screw does not occur in the zone of contact of the screw with the nut, but outside of it, which does not exclude abrasive particles entering the zone of contact of the screw and nut, contributing to the accelerated wear of the screw peer, and its jamming

The aim of the invention is to increase the reliability of the screw pair and increase its service life.

The goal is achieved by the fact that in a boring machine containing a frame a pneumatic drive mechanism, a drill head, a screw, a slide nut and a drilling tool according to the invention, the screw is made with channels that communicate the inner cavity of the screw with its outer grooves and the exhaust channel of the drive

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filing communicated with the internal cavity of the screw.

Fig. 1 is a schematic of a drilling machine; Figure 2 shows the interaction zone of a screw pair.

Drilling machine contains frame 1, pneumatic drive 2 feed, screw 3, nut 4, slide 5, drill head b, drilling tools 7.

The screw 3 is made hollow and has radial channels 8, which communicate the internal cavity of the screw with its external grooves, and are located along the entire length of the screw in places determined by the design of the boring machine, while the exhaust channel of the drive 2 communicates with the internal cavity of the screw 3 through the channel 9, and the number and cross section of the radial channels 8 is determined by the allowable pressure at the output of the feed drive.

The actuator 2 feed is connected through the valve 10 and the channel 11 to the source of energy. The nut 4 is mounted on the screw 3 and mounted inside the slide 5, which are placed on the frame 1 with the possibility of moving along it.

Drilling machine works as follows.

The compressed air supplied through the channel 11 through the distributor 10 rotates the pneumatic actuator 2 of the feed, which transmits torque to the screw 3 and, through the nut 4 and the slide 5, the axial force is transmitted to the drill head 6 with the drilling tool 7. Drill head 6 s the drilling tool 7 is fed to the bottom or from the bottom depending on the direction of rotation of the screw. At the time of operation of the feed mechanism forward or backward part of the exhaust air, in

which contains an oil aerosol, from the exhaust channel of the feed drive through channel 9 will flow into the internal cavity of the screw and through the radial channels

8 to the direct contact area of the nut with the turns of the screw 3, as a result of which the lubricating surfaces are continuously lubricated. If abrasive particles get into the contact zone of the screw and nut,

the latter will be carried by the air flow.

Thus, such a constructive solution will significantly improve the reliability of the drilling machine for

by eliminating jamming of the screw pair, which is ensured by continuous lubrication of the rubbing surfaces, as well as increasing the service life of the screw pair by eliminating contact with the contact area

abrasive particles. and continuous lubrication of her.

Claims (1)

Claims of Invention: Drilling machine containing frame, an on-frame slide with a drill head, a feed mechanism comprising a screw connected to the pneumatic drive with external grooves and a nut connected to the screw connected to the slide drilling head, a drilling tool, characterized in that, in order to increase machine reliability and increase the service life of the screw pair by preventing abrasive particles from entering the screw and nut contact area and lubricating them, the screw is made hollow with radial channels to communicate the internal cavity of the screw with its external grooves, and the exhaust channel of the pneumatic drive supply communicates with the internal cavity of the screw. f r y / x / V / / s / / / W Y / i / Sf / SS / ff / f // fS- /  & df ± &% a 5 T /. ///////  //////. H7g