Air hammer with double-rod piston

Abstract

The invention discloses an air hammer with a double-rod piston. The air hammer comprises a cylinder, wherein a cylinder cover is arranged on the cylinder; a piston, a piston pin and a connecting rod are arranged inside the cylinder; the piston pin is arranged below the piston; the connecting rod is connected with the piston pin; a lower guide sleeve is arranged around the connecting rod; a crank and a crankshaft are connected at the other end of the connecting rod; an upper guide sleeve is arranged in the cylinder cover and comprises a guide hole and a sealing device installed on the lower part inside the guide hole; and an upper piston rod is connected above the piston and penetrates through the guide hole and extends out of the cylinder cover. The air hammer has the following beneficial effects that abnormal wear is avoided, thus prolonging the service lives of the piston and the cylinder and prolonging the service life of the air hammer.

Description

technical field [0001] The invention relates to an air hammer, in particular to a double-rod piston air hammer. Background technique [0002] As a kind of free forging equipment, the traditional air hammer has been favored by forging enterprises because of its wide process adaptability, low failure rate, convenient maintenance, low maintenance cost, low energy consumption, flexible operation, and easy-to-learn operation methods. . [0003] like figure 2 , 4 Said, in the prior art, the piston is a schematic diagram of the air hammer crank linkage mechanism of the single rod piston driving the piston to reciprocate up and down. 6 and so on. The crankshaft 12 rotates in the direction of the arrow shown in the figure, and the crank 11 drives the piston 3 to reciprocate up and down through the connecting rod 5 . Since the piston 3 is a single rod, that is, only the lower part of the piston 3 has the lower guide sleeve 6, the piston 3 has the following disadvantages in the pr...

AI Technical Summary

Problems solved by technology

Since the piston 3 is a single rod, that is, only the lower part of the piston 3 has the lower guide sleeve 6, the piston 3 has the following disadvantages in the process of reciprocating up and down: 1. Under the condition of air hammer forging vibration, "" The tendency of the piston to yaw around the piston pin" will cause friction between the big head of the piston and the cylinder wall, which will cause abnormal wear of the cylinder wall and the big head of the piston

2. Since the crankshaft only rotates in one direction, a horizontal component force in one direction will be formed when the connecting rod moves, forming friction between the piston rod part and the inner wall of the guide sleeve, which will cause the upper left and lower right diagonal directions of the piston rod part Abnormal wear at two places and the inner wall of the guide sleeve

The abnormal wear mentioned above will seriously affect the sealing performance of the entire cylinder, and then affect the forging performance of the air hammer equipment

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