Excavator supporting arm front end manufactured by casting technique and its manufacturing method

Abstract

This invention is a front end of excavator supporting arm manufactured by casting technique and manufacturing method thereof, including: a through hole located at a secondary through part formed on a bucket head and connected with the secondary through part; a bucket head occluding part located a supporting arm end bump formed at the front end of the supporting arm (ARM); a lateral plate part that is occluded with the tail end of the end bump of the bucket head occluding part and is parallel to two lateral sides with the plate shape; and a main body part that includes a cylindrical pipe column vertically connected with the center of the lateral plate part thereof and is inserted into an inserting opening of the supporting arm front end. All the components form a whole through the casting method. The manufacturing method includes following steps: a design step; a manufacturing process of mould; a process of heat treatment and a mechanically processing step. The manufacturing cost for manufacturing the integral supporting arm front end and the fraction defective will be reduced through the preceding casting technique. At the same time, the lead time for manufacturing the product to the finished product is reduced, which improves the production rate.

Description

Technical field [0001] The invention relates to an excavator arm front end (ARM FRONT) which is combined with the front end of a support arm (ARM) assembled on an excavator and combines a bucket (BUCKET) with the support arm. More specifically, the front end of the excavator arm does not need to be welded by the riveting process, but is cast into a whole through the casting process. Background technique [0002] In general, such as figure 1 and image 3 As shown, combined with the front end of the arm (20) assembled on the excavator, the front end (10) of the arm (10) that combines the arm (20) with the bucket (30) is composed of the following parts: The front end fixing part (12) combined with the secondary penetration part (36) on the shovel head (BUCKET HEAD) (32); the two side panels (14) combined with the ends respectively; and the upper part of the side panel (14) The occlusal hole (15) is combined with the connecting fixing member (16) which is connected to the hydraulic ...

AI Technical Summary

Problems solved by technology

[0003] However, in order to combine the arm with the bucket, which frequently rotates at the front end of the arm and is constantly impacted and subjected to external forces, its components must be strong and durable.

However, at present, the front fixing piece, the two side panels, the connecting fixing piece, and the joint are welded separately through the riveting process. The manufacturing process is complicated, and the structure of the iron plate changes due to the heat generated by the welding section making it less durable and prone to breakage when impacted

In addition, if there are air holes inside during the welding process, cracks will easily occur, resulting in the disadvantage of increasing the defective rate.

Images