SU520440A2 - The executive body of the tunnel miner - Google Patents

Description

EXECUTIVE BODY

(54) COMBINE

The invention relates to mining machines, in particular to tunneling machines, which destroy the massif by cutting cores.

According to the main auth. No. 439603 is known for the executive body of the tunneling machine, including a drive shaft, percussion, an annular anvil, an ejector, a tubular hollow crown with incisors installed at the end, impact rods placed circumferentially between the incisors, while the shanks of the rods are rigidly connected with the drill.

The disadvantage of the known executive body is the asynchronous operation of the strikers.

In order to eliminate this drawback, the proposed executive body is equipped with a central percussion device, designed in the form of an annular drummer and an annular shaped cocking rail located on the crown.

This allows synchronization of the work of the firing pin.

No. of FIG. 1 depicts the proposed executive body; in fig. 2 is a view along arrow A in FIG. one.

The actuator includes a boom body 1, inside which a hollow shaft 2 passes, transmitting torque to the crown 3,

associated with a spring-loaded annular splitter 4, an ejector 5, spring-loaded shock rods 6, an annular charging rod 7, an annular charging piston 8, a stabilizing key 9 and a ring-shaped piston 10. The crown is equipped with incisors 11 and a tear-off device 12.

The annular platoon piston 8 forms with the body of the boom 1 an injection cavity B, and with an annular piston 10 - a priming cavity B. The volume of the injection cavity B is larger than the volume of the initial cavity B, as a result of which the resistance of the fluid in cavity B to the movement of the annular piston - primary 10 at its working stroke is insignificant, therefore, the accumulated energy in the pneumatic accumulator 13 is almost completely spent on producing an impact on the working rods 6.

The executive body works as follows.

The annular profiled rail 7 (platoon) fixed on the crown, rotating with the latter, acts with its teeth on the annular platoon piston 8, moving it along the axis of the crown.

The fluid from the cavity B under pressure enters the cavity B and moves the annular piston-striker 10, compressing the gas in the accumulator 13. With further rotation of the rail 7, the teeth of the charging piston 8 end up opposite the depression between the teeth of the rail 7, which allows the compressed gas to move the pneumatic accumulator 13 to move the annular piston-bushing 10, which displaces the fluid from the cavity B to the cavity B, moving the charging piston 8 and at the same time striking all the working rods. The cycle is repeated. The incisors 11 and the rotating crown percussion tool form an annular slot 14 in the array, which has a core 15. The external device 12, which is, for example, the tide of the wedge-shaped profile on the inner surface of the crown, enters the gap between the crown and core and denies it from the array. If the core for some reason does not detach from the array, then its length continues to increase.

FIG. 2

towards the bottom of the crown. Ultimately, with its end plane, the core will press down on the spring-loaded annular extender 4, which are approximately connected together by means of the guides 16 to the piston jack 10. The piston head passes the blow to the annular puller, and the latter crushes the core core 15. The broken core together with the crown is removed from holes drilled in the bottom, and ejected by the ejector 5 to the bottom of the slaughter on the working soil or on the loading device.

Claims (1)

Invention Formula The executive body of the tunnel miner auth. St. No. 439603, characterized in that, in order to synchronize the work of the impactors, it is provided with a central impactor, made in the form of an annular impactor and an annular shaped platoon rail, located on the crown. 9 iO B