Bucket connecting barrel for mining excavator and manufacturing method thereof
A technology for connecting cylinders and excavators, which is applied in the directions of earthmoving machines/shovels, construction, etc., can solve the problems of difficulty in manufacturing circular connecting cylinders, the inability of strength and torsional performance to meet the use requirements of large excavators, etc. Effects of torsional resistance and stiffness, reduction of springback, reduction of manufacturing difficulty
Active Publication Date: 2011-12-28
TAIYUAN HEAVY IND
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, provide the bucket connecting cylinder of the mining excavator and its manufacturing method, the connecting cylinder adopts a circular section structure, and solve the problem that the strength and torsion resistance of the existing elliptical connecting cylinder cannot meet the requirements Requirements for the use of large excavators, and solving the problem of difficult manufacture of circular connecting barrels
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[0018] Such as figure 1 , 2 As shown in , 3, a stick connecting cylinder of a mining excavator is to weld the left stick 2 and the right stick 3 together horizontally with the connecting barrel 1, and the connecting barrel 1 is welded by two bent steel plates. The two bent steel plates are semicircular steel plates: upper semicircular steel plate 1-1, lower semicircular steel plate 1-2, the upper semicircular steel plate 1-1 and lower semicircular steel plate 1-2 are butted, and set at the joint Backing plate 4 is welded.
[0019] The specific steps of a manufacturing method of a bucket connecting cylinder of a mining excavator are as follows:
[0020] (1) Bending two steel plates into semicircles respectively, namely: upper semicircular steel plate 1-1 and lower semicircular steel plate 1-2;
[0021] (2) Open V-shaped grooves at both ends of two semicircular steel plates;
[0022] (3) Butt the two semicircular steel plates, and place the backing plate 4 at the inner groov...
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The invention discloses a manufacturing method of the bucket arm connecting cylinder of a mine excavator, relating to mine excavators. The invention solves the problems that a circular connecting cylinder is difficult to manufacture. The bucket arm connecting cylinder is formed by abutting two semicircular steel plates and welding base plates arranged in an abutting position. The manufacturing method comprises the steps of: respectively bending two steel plates into semicircular steel plates with V-shaped grooves at two ends, wherein the two semicircular steel plates are well abutted; arranging the base plates on the inner sides of the grooves, and welding to form the connecting cylinder; and placing two abutting welding seams of the connecting cylinder on the same plane with the axial lines of a left bucket arm and a right bucket arm, and welding. The invention has the advantages of improving the torsion resistance and rigidity of the bucket arms, reducing the resilience force of the bent steel plates, lowering the manufacturing difficulty and enhancing the bending resistance of the connecting cylinder, and is suitable for large mine excavators.
Description
technical field [0001] The invention relates to a mining excavator, in particular to a bucket connecting cylinder of a mining excavator. Background technique [0002] There are two types of pushing methods for mining excavators: one is gear-rack pushing, and the other is wire rope pushing. The pinion-rack push uses a double stick, such as figure 1 As shown: the left stick 2 and the right stick 3 are connected together through the connecting cylinder 1, so as to ensure the parallelism and torsion resistance of the left and right sticks. At present, the stick connecting barrel of the excavator generally adopts an elliptical structure, that is, two bent steel plates are welded into an elliptical connecting barrel. With the continuous increase of excavator bucket capacity, the strength and torsional performance of the elliptical connecting cylinder cannot meet the requirements of large excavators. Practice has proved that making the connecting cylinder into a circular shape c...
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Inventor 贺建平王晓明张明霞
Owner TAIYUAN HEAVY IND