No oil mist, energy saving, low consumption air leg rock drill

Abstract

The invention discloses an air-leg rock drill without oil mist, energy saving and low consumption. The technical points of the present invention are: the piston has a three-cylindrical structure, the support friction pair is between the striking rod at the front of the piston and the inner hole of the guide sleeve, and between the air distribution rod at the rear of the piston and the inner hole of the valve body, and the gap is larger than the middle part of the piston. The gap between the inner holes of the cylinder is small, and the middle part of the piston is suspended in a large circle; the front oil chamber and the rear oil chamber are respectively added in the gaps between the guide body and the valve body, and the front oil chamber and the rear oil chamber are not connected to each other; the rear part of the piston is air-distributed. The size of the rear end of the rod satisfies: when the piston moves forward to the rear boundary of the cylinder exhaust port, the rear end surface of the piston tail lags behind the rear boundary of the return air inlet of the valve body by several millimeters. The invention provides an oil-mist-free, energy-saving, low-gas-consumption leg that saves (gas) and has higher working efficiency, and realizes exhaust without oil mist, which is good for environmental protection and ecology, saves resources, and has a more reasonable structure. rock drill.

Description

technical field [0001] The invention belongs to the technical field of construction machinery equipment, and in particular relates to an oil-mist-free, energy-saving and low-consumption air-leg rock drill. Background technique [0002] The existing air-leg rock drill is widely used in China due to its stable performance, easy operation and reliable use, and it uses air as the power medium. It is called a "conventional weapon" used in mining and stonework . It is estimated that the current national annual output is nearly 200,000 units (sets). Although this product is not large, it has a large quantity and a wide range, which is directly related to the national economy, the people's livelihood and environmental protection. Among the four models of Guoyou products evaluated by the state, the valveless rock drill (YTP26) is one of them. In the past, most of our understanding stayed on the viewpoint of traditional mechanics, and the understanding and application of modern mech...

AI Technical Summary

Problems solved by technology

Its main problems—vibration and recoil are large, can also be solved through improvement measures; at the same time, through decades of production practice and comparison with similar rock drills at home and abroad, hidden shortcomings of valveless rock drills have also been found : High impact back pressure and large internal friction directly affect the excellent performance of the product

[0004] The traditional lubrication method of the existing air leg rock drills at home and abroad is to use a separate external oiler (commonly known as the oil pot), mix the oil and gas, and distribute it to the internal surfaces of the machine through high-pressure air flow, and most of the gas with mineral oil is treated as Exhaust gas is quickly discharged into the atmosphere, which not only consumes a lot of fuel, but also pollutes the environment and destroys the ecology, and also affects the quality of rock drilling operations, the safety of operators, and the loss of labor protection supplies. Therefore, the majority of mine workers have long been eagerly looking forward to a solution

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