Mechanical mast-type tunnel drilling rig

Abstract

The invention discloses a mechanical mast-type tunnel drilling rig which comprises a rack seat, a motor, a clutch, a transmission, a mast, a drive shaft, a power head, a two-stage oil cylinder and an oil cylinder tray, wherein the drive shaft is arranged on the mast; the power head is arranged on the mast and is slidingly matched with the mast; the drive shaft penetrates through the power head and can drive the main shaft of a drill rod to rotate; a vertically downward piston rod of a primary-stage oil cylinder is fixed on the bottom of the mast; the oil cylinder tray is arranged on the mast and is slidingly matched with the mast; the body of the two-stage oil cylinder is fixedly connected with the oil cylinder tray; and a vertically upward piston rod of the two-stage oil cylinder is fixedly connected with the power head. According to the invention, the power head is lifted by adopting the two-stage oil cylinder, the highest climbing height of the power head on the mast equals to the total length of the piston rod of the two-stage oil cylinder, and the feed height of the drill rod can be increased; the primary-stage oil cylinder is installed at the bottom of the mast, and the two-stage oil cylinder is installed on the primary-stage oil cylinder through the oil cylinder tray; and the structure for driving the power head to climb along the mast is simple, the weight of the structure is light, the center of gravity is lower, and the complete machine has good stability.

Description

technical field [0001] The invention relates to a tunnel drilling machine, in particular to a mechanical mast type tunnel drilling machine for drilling in tunnels (tunnels). Background technique [0002] In the construction of consolidation grouting and curtain grouting in the construction corridor of the hydropower station, it is necessary to drill several holes with a certain diameter and depth in multiple cross-sections of the corridor and on the circumference of 0°~360°; In the construction of highway and railway tunnels, in many fields such as coal mine tunnel construction and geological disaster management, it is necessary to drill holes in multiple directions and directions in the tunnel. In the existing corridor or tunnel construction, the height of the corridor or tunnel is required to be relatively high. In order to meet the construction requirements of existing corridors or tunnels, a tunnel drilling rig with a chain lifting power head is often used in the prior ...

AI Technical Summary

Problems solved by technology

[0004] The tunnel drilling rig of the above-mentioned structure mainly has the following deficiencies in construction: 1. The hoisting sprocket, transmission sprocket and transmission chain are set on the mast, and the transmission chain bypasses the top and bottom of the mast. The load of the drilling rig itself is increased; 2. The weight of the set hoisting sprocket, transmission sprocket and transmission chain is all loaded on the mast, and the mast is set above the frame base, which will cause the center of gravity of the whole machine to move upward, and the stability of the entire drilling rig Poor; 3. The two ends of the power head are installed on the mast and can slide up and down along the mast. The sliding fit increases the friction between the power head and the mating surface of the mast, shortening the service life of the power head and the mast

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