Semi-automatic anchor hole drilling system

Abstract

The invention relates to a system for drilling anchor holes semi-automatically. A system for semi-automatic bolting with a hydraulic cylinder and a motor, comprising a rotary control reversing valve (1) having a first inlet connected to a pump (11), a first outlet connected to a motor, and a second inlet connected to a motor And the second outlet connected to the hydraulic oil tank; the feed control reversing valve (2), which has the first inlet connected to the main oil pump, the first outlet connected to the rodless chamber of the hydraulic cylinder, and the second inlet connected to the rod chamber of the hydraulic cylinder and a second outlet for connection to the hydraulic tank. Each of the rotation control reversing valve (1) and the feed control reversing valve (2) has at least one locking port. The locking ports of the rotary control directional valve (1) and the feed control directional valve (2) are connected so that when the rotary control directional valve (1) is placed in the neutral position, the feed control directional valve (2) ) will also be placed in the middle position.

Description

technical field [0001] The invention relates to a system for semi-automatically drilling anchor holes, in particular, a hydraulic system providing power and control for a bolter of mining equipment. Background technique [0002] When working in underground mines, safety guidelines require supports to be installed on top of the roadway at intervals. This work is usually done by a specialized machine called a "top anchor rig" (although it is called a "top anchor rig", it is also able to bolt on both sides of the top, such as installing ribs). A typical jack anchor rig is capable of making a hole (drilling) a section of the roadway and installing a roof anchor or "bolt" in the hole. [0003] figure 1 A schematic diagram of a hydraulic system for bolting is shown. During the start of bolting, the oil flows out from the constant volume pump, reaches the P1 port of the reversing valve through a long pipeline, and flows from the P3 port to the hydraulic oil tank. Since this sec...

AI Technical Summary

Problems solved by technology

Since the long pipeline cannot be omitted in the actual mechanical layout, it will result in high pressure loss and generate a lot of heat

Additionally, the system lacks a hydraulic pump safety device

For a bolting hydraulic system, the mechanical detent is inconvenient to use. When the drilling is finished or in an emergency, the joystick cannot automatically return to the neutral or neutral position.

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