Excavator counter weight and manufacture method thereof

Abstract

The invention discloses an excavator counter weight and a manufacture method thereof. The excavator counter weight comprises a box body and a cover plate, wherein filling openings are formed in the top of the box body; the box body is welded with the cover plate to form a counter weight housing. The excavator counter weight is characterized in that a plurality of concrete blocks are arranged in the counter weight housing; at least one filling through hole is formed in each concrete block; an upper layer of the concrete blocks is connected with a lower layer of the concrete blocks through connecting shafts. The excavator counterweight has the advantages as follows: the concrete blocks in the excavator counter weight are distributed uniformly; the operation stationarity of an excavator is high when the excavator is in operation; when the excavator counter weight is filled with the concrete blocks, the concrete blocks are prevented from impacting the counter weight housing so as not cause deformation of the counter weight housing; local cavities in the counter weight housing are avoided; the phenomenon that during operation, the counter weight housing is depressed or deformed duo to impacts of external forces is avoided; the manufacture method of the excavator counter weight can adopt an industrial assembly line to effectively improve the production efficiency.

Description

technical field [0001] The invention relates to a counterweight filled with concrete, which is especially suitable for counterweights of construction machines such as excavators and a manufacturing method thereof. Background technique [0002] Construction machinery such as hydraulic excavators generally need to be equipped with counterweights in order to balance the swing of the machine during operation. The traditional counterweight is to weld the hollow box and the cover to form the box. The box is equipped with a concrete filling port, and the concrete is filled into the counterweight shell through the concrete filling port to achieve the specified weight, and then used Appropriate vibrating devices vibrate to remove the internal air, and seal it after the concrete solidifies. [0003] Because this kind of counterweight is filled in the whole box, the fluidity of the concrete filled inside is poor, and it is easy to produce uneven filling. Some places have more filling...

AI Technical Summary

Problems solved by technology

[0003] Because this kind of counterweight is filled in the whole box, the fluidity of the concrete filled inside is poor, and it is easy to produce uneven filling. Some places have more filling, and some places have less filling, which eventually leads to uneven weight distribution of the counterweight. The counterweight makes construction machinery such as excavators shake during operation, and the operation stability of the machine is poor

When this kind of counterweight is filled with concrete, the filled concrete impacts the box body, causing serious deformation of the box body and affecting the appearance quality of construction machinery such as excavators.

Due to the uneven filling of the counterweight, it is easy to generate local cavities in the shell, which will cause the box to sag and deform when the excavator is impacted by external forces during operation, which affects the appearance quality of the excavator.

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