Excavating mechanism
A technology of connecting rod and connecting hole, which is applied in the direction of mechanically driven excavator/dredger, etc., can solve the problems of occupation, easy damage to the mechanism, and small angular travel of the bucket.
Active Publication Date: 2013-08-07
建研机械检验检测(北京)有限公司 +1
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Problems solved by technology
When using an excavator to work in some tunnel culverts and raw soil cave excavation projects, due to the small angle travel of the bucket, it cannot be lifted to a sufficient position to make the bucket dig forward effectively. , the traditional bucket mechanism of the excavator cannot work
If the existing four-bar mechanism is used to directly increase the stroke of the hydraulic cylinder to expand the angle of the bucket, one is that the structure of the existing bucket takes up more corner space, and there is no room for larger angle enlargement; the other is that the overall structure of the mechanism The output efficiency is not high, and the third is that the strength of each part of the mechanism is insufficient, and the mechanism is easily damaged
Method used
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[0018] Such as figure 1 Shown, the present invention improves and realizes on the excavating device basis of a kind of brand excavator of prior art. An excavating mechanism of the present invention includes a bucket 1 , a connecting rod 2 , a rocker 3 , an arm 4 , and a hinge cylinder 5 . The bucket rod 4 is a fixed rod, and the bucket 1, the rocking rod 3 and the hinge point oil cylinder 5 are all connected with it. The rocking bar 3 and the connecting rod 2 are connected to each other, and the other end of the fixed hinge oil cylinder 5 is connected to the hinge point, and the other end of the connecting rod 2 is connected to the bucket 1 . The four-link structure is composed of stick 4, connecting rod 2, rocker 3 and bucket 1. The hinge point cylinder 5 is used as the power, and the hinge point cylinder 5 pushes the connecting rod cylinder to connect the hinge point to expand and contract, so as to realize the rotation and excavation of bucket 1. sports. During the desig...
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The invention relates to an excavating mechanism. A four-link structure of a hydraulic excavating machine is improved. The connection line between two connecting holes on an ear plate of an excavating bucket and the extension line of a lip of the excavating bucket form an included angle of 140 degrees+ / -1 degree. The intersection point of the extension line of the lip of the excavating bucket andthe connection line between the two connecting holes is positioned between the two connecting holes. In the four-link structure formed by a bucket rod, a connecting rod, a rocking rod and the excavating bucket, the length of each rod and the structures of the connecting rod, the rocking rod and the ear plate are further improved, thereby enabling the total stroke angle of working of the excavating bucket to be 228.5 degrees+ / -1 degree. The excavating mechanism breaks through the limit that the rotation angle of the excavating bucket of the excavating mechanism of the traditional excavating machine is about 160 degrees, the motion stroke of the four-link mechanism is expanded and the working strength of the excavating mechanism is further ensured. The excavating mechanism is suitable for the hydraulic excavating machines in the prior art and construction machines with the excavating function.
Description
technical field [0001] The invention relates to a hydraulic excavator, in particular to an excavating mechanism on the hydraulic excavator. Background technique [0002] The excavating mechanism of the backhoe hydraulic excavator is a four-bar linkage mechanism composed of a bucket, two connecting rods and a boom, and a hydraulic cylinder is used as the driving force. The working range of the backhoe excavator is at the front and lower part of the fuselage, and the maximum turning angle of the bucket is generally around 160. When using an excavator to work in some tunnel culverts and raw soil cave excavation projects, due to the small angle travel of the bucket, it cannot be lifted to a sufficient position to make the bucket dig forward effectively. At this time, the traditional bucket mechanism of the excavator cannot work. If the existing four-bar mechanism is used to directly increase the stroke of the hydraulic cylinder to expand the angle of the bucket, one is that th...
Claims
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IPC IPC(8): E02F3/36E02F3/38E02F3/40
Inventor 李杨虞洪
Owner 建研机械检验检测(北京)有限公司