Tunneling machine

Abstract

The invention relates to a tunneling machine, which is characterized in that a cutting head and a cutting speed reducer form hinge connections on both ends of a stretching bush though high strength bolts, a cutting motor forms a hinge connection behind the cutting speed reducer, a cutting portion is connected with a body frame through a connection pin, a stretching cylinder drives the cutting head to move forward along the stretching bush, a shovel plate and a first conveyor are connected with a shovel plate stretching frame through pins, the shovel plate stretching frame slides along a sliding box on the body frame, and a second conveyor connection frame forms a hinge connection on a first conveyor rear groove through a high strength bolt. The tunneling machine has the following advantages that: stretching degree and dinting depth of the cutting portion of the tunneling machine are increased to improve cutting rate so as to achieve stretching of the shovel plate portion; by matching with the increase of the stretching degree of cutting portion, shipment is increased, such that the first conveyor and the second conveyor can synchronously perform stretching movements along with the shovel plate so as to significantly improve the unloading condition of the first conveyor.

Description

[0001] technical field [0002] The invention relates to the technical field of mining engineering, in particular to a roadheader used for tunneling operations in coal roadways, coal-rock roadways and rock roadways. Background technique [0003] At present, in mine roadway excavation projects, in order to alleviate the stress concentration of the floor, the excavation process of round section roadway floor backfilling is generally used instead of the original flat floor roadway mining technology, but the existing various types of roadheaders are not suitable for the excavation process of round section roadways. It is mainly reflected in the insufficient expansion and undercover of the cutting part, and the insufficient width of the shovel plate for the undercover of the arc-shaped floor, resulting in a decrease in shipments and an increase in labor for manual shipments. Due to connection problems between the first transport plane (hereinafter referred to as the first tra...

AI Technical Summary

Problems solved by technology

[0003] At present, in mine roadway excavation projects, in order to alleviate the stress concentration of the floor, the excavation process of round section roadway floor backfilling is generally used instead of the original flat floor roadway mining technology, but the existing various types of roadheaders are not suitable for the excavation process of round section roadways. Mainly reflected in the insufficient expansion and undercover of the cutting part, the width of the shovel is not enough for the undercover of the arc-shaped bottom, resulting in a decrease in shipments and an increase in labor for manual shipments

Due to connection problems between the first transport plane (hereinafter referred to as the first transport plane) and the second transport plane (hereinafter referred to as the second transport plane), the unloading and receiving status of the goods is not good, and the goods of the first transport plane often fall on the ground. Additional labor is required for secondary loading and shipment, which increases the labor intensity of mining and the danger of work

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