SU815272A2 - Percussive device for drilling rock - Google Patents

Description

The invention relates to the mining industry and can be used when drilling mining prod.

According to the main author. St. "415360 known percussion device for drilling rocks, including a rotary drive tool, a percussion piston with air distribution grooves, frame-valuable in the cylinder and interacting with a plunger installed in a chamber filled with fluid from the supply line. This chamber is in communication with the drive turning the tool through the channel, and in the spring-loaded plunger, Canada ^{1 is made} periodically communicating the supply line with a chamber filled with fluid flj.

The disadvantage of this device is that the rotation of the tool occurs only at the end of the reverse stroke of the piston.

The purpose of the invention is to increase the efficiency of the device due to the implementation of the rotation of the tool during the whole cycle (with forward and reverse stroke of the shock piston).

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This goal is achieved as a result of the fact that the device has a receiver, which is made with a spring-loaded lid and is integrated into the channel, which communicates a chamber filled with liquid with a drive turning the tool.

The drawing schematically shows a percussion device for drilling rocks.

The device contains cylinder 1 with channels! 2 and 3 of forward and reverse strokes, inside of which an impact piston 4 is placed with an air distribution recess 5, which is constantly connected to the network channel 6.

The cylinder has a chamber 7, filled with liquid. In the cavity of the chamber 7 there is a plunger 8 with a return spring 9. In the plunger 8 a channel 10 is made with the possibility of its periodic communication with the supply ___ line through the inlet channel 11. The chamber 7 is connected by a channel 12 to the receiver 13, the cover of which 14 is provided with a spring 15. The receiver 13 is connected channel 16 with a rotation drive (hydraulic motor) 17, designed to rotate the tool (drill) 18. The exhaust air is exhausted through channels 19. The cylinder 1 has working chambers 19 and 20.

The device operates as follows.

The operation of the device begins with the supply of compressed air to the network channel 6, from which through the recess 5 the air alternately, depending on the position of the piston 4, enters the channels 2 or 3, providing reciprocating movement of the piston 4. | q Exhaust air from the working chambers A and B are alternately discharged into the atmosphere through channels 19. After the piston 4 collides with the plunger 8, the latter transmits a shock impulse to the liquid j filling the chamber 7.

The liquid through the channel 12 enters the receiver 13, in which the cover 14 experiences the action of the spring 15, which abuts the other end against the housing of the receiver 13, due to which the liquid * 0 is constantly under pressure, and not only during the arrival of the shock pulse, which allows the hydraulic motor 17 to rotate the drill 18 during the entire cycle of the device. 25

Further, the liquid along the channel 16 post. falls into the hydraulic motor 17, forcing him to rotate the drill 18. The waste fluid is used to wash the hole. Due to the movement of the plunger 8 jn, the channel 10 is aligned with the inlet channel 11, which ensures filling of the chamber .7 with liquid.

After the piston 4 leaves the plunger 8, the latter, with the help of a return spring 9, returns to its original position, separating the channels 10 and 11.

The presence of the receiver with a spring-loaded upper wall allows you to keep the fluid under constant pressure, so that the drill is rotated during the entire cycle of the proposed device.

Claims (1)

Claim Percussion device for rock drilling according to ed. St. No. 415360, characterized in that, in order to increase the efficiency of the device, it has a receiver, which is made with a spring-loaded Cover and is built into the channel, which communicates the filled liquid chamber with a drive turning the tool. •