Wear-resistant cylinder hammer for guide rod type diesel pile driver and processing method thereof

Abstract

The invention discloses a wear-resistant cylinder hammer for a guide rod type diesel pile driver, which comprises a cylinder hammer body and a cylinder cavity, wherein the cylinder cavity is arranged on the cylinder hammer body; the cavity wall of the cylinder cavity is provided with a hardening layer; and the ratio of the width L of the hardening layer to the hole depth H of the cylinder cavity (4) is that L / H is between 0.8 and 1.0. To obtain the wear-resistant cylinder hammer, a processing method at least comprises the steps of: a, performing casting forming, in which a formed cylinder hammer blank with a blank hole of the cylinder cavity is cast; b, processing a cavity hole of the cylinder cavity, namely processing the cavity hole of the cylinder cavity on the formed cylinder hammer blank by a turning or / and boring processing method; c, grinding the cavity wall of the cylinder cavity, namely performing grinding processing on the cavity wall of the cylinder cavity; and d, performing surface quenching on the cavity wall of the cylinder cavity. The wear-resistant cylinder hammer has the highly hard and wear-resistant cavity wall of the cylinder cavity, and has high blow efficiency and long service life. The processing method has a reasonable process and convenient implementation.

Description

technical field [0001] The invention relates to the technical field of building construction pile machinery, in particular to a guide rod type diesel piling hammer, in particular to an improvement of the structure of a guide rod type diesel pile driver cylinder hammer. The invention also relates to a processing method of the cylinder hammer. Background technique [0002] Among the pile machinery for construction, the guide rod diesel pile driver is widely used in wooden piles, metal piles, concrete prefabricated piles and cast-in-situ piles due to its simple structure, large impact energy, convenient operation and maintenance, and excellent cold start performance. Equal pile type construction is an ideal equipment for pile foundation engineering construction such as water conservancy projects, industrial and civil buildings, bridges, road construction and dike construction. [0003] At present, the basic structure of the guide rod diesel pile driver is that two cylinder ham...

AI Technical Summary

Problems solved by technology

However, the cylinder chamber of the cylinder hammer, which has a large amount of impact and vibration and has no surface treatment, is prone to severe wear with the piston and piston ring. Although the ratio of the wear amount to the size of the cylinder hammer is small, the absolute value of the wear amount is large. It is very large, which leads to the increase of the wear gap between the piston and the piston ring and the cylinder chamber, which greatly reduces the effective compression stroke of the cylinder hammer sleeve and the piston, making it difficult to form a high oil-gas compression force and compression temperature in an instant. The fuel cannot be completely burned, and there will be extremely thick smoke, which will pollute the environment and waste fuel resources

The increase of the cylinder cavity gap will also make the effective bounce of the cylinder hammer lower, the strike will be weak, and the strike efficiency will decrease until it cannot work normally, which will directly affect the service life of the cylinder hammer

Images