Processing apparatus for preventing pistons on hydraulic cylinder for hammer from deforming, and method thereof

Abstract

The invention discloses a processing apparatus for preventing pistons on a hydraulic cylinder for a hammer from deforming, and a method thereof. The apparatus comprises a chassis, a guardrail, a suspension rod and a positioning galvanized wire, wherein the chassis is horizontally arranged, and a plurality of round fixed grooves used for the inserting of the lower ends of pistons are uniformly distributed on the surface of the chassis; the lower end of the guardrail is arranged on the edge of the surface of the chassis; the suspension rod is vertically arranged in the center of the surface of the chassis; and the positioning galvanized wire is fixed between the upper ends of the pistons and the guardrail. The processing apparatus for preventing pistons on a hydraulic cylinder for a hammer from deforming utilizes the fixed grooves on the apparatus and the positioning galvanized wire to firmly fix the upper and lower ends of the pistons, so the gravity generating deformation and bending stress are offset in the heat treatment process, thereby waste pistons caused by the heat treatment deformation are reduced, the stock removal is substantially reduced, and the product qualification rate is guaranteed. Additionally, the processing method is simple and is convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment and processing, and in particular relates to a processing device and method capable of preventing deformation of a piston on a hydraulic cylinder for a breaker. Background technique [0002] Breaking hammer is a kind of hydraulic energy as power to drive the piston inside the upper middle cylinder of the hydraulic cylinder to reciprocate, and beat the drill rod through the piston to transfer energy to the drill rod, and then the drill rod is beaten and hit Hit the object, in this process, the energy on the chisel is absorbed by the hit object, so as to break the hit object into important construction machinery, mainly used for breaking, demolition, excavation of hard layers and other work in construction , usually installed on hydraulic excavators, loaders or power packs, has the advantages of large impact, easy to use, good maneuverability and high efficiency. figure 1 It is a struc...

AI Technical Summary

Problems solved by technology

However, this prior art hydraulic cylinder for a breaker has the following problems: as mentioned above, during the crushing operation, the piston 12 is required to perform reciprocating high-frequency movement inside the middle cylinder body 2, so the piston 12 is required to have a higher resistance. At the same time, the piston 12 needs to use the striking surface at the lower end to hit the drill rod 4, so it is required to have high impact resistance. Therefore, the surface heat treatment method is commonly used to improve the wear resistance and impact resistance of the piston 12.

However, since the piston 12 is a slender rod, it is extremely prone to deformation problems during heat treatment

And under the premise that the deformation cannot be solved, the grinding allowance must be increased, and it is easy to grind out a qualified piston due to excessive deformation, resulting in a high scrap rate of the piston 12 and an increase in product cost

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