WO2020011064A1

WO2020011064A1 - Bucket swing arm mechanism of excavator

Info

Publication number: WO2020011064A1
Application number: PCT/CN2019/094391
Authority: WO
Inventors: 杨双来; 杨棋翔
Original assignee: 杨双来
Priority date: 2018-07-12
Filing date: 2019-07-02
Publication date: 2020-01-16
Also published as: CN108915003A

Abstract

The present invention relates to a bucket swing arm mechanism of an excavator. The lug at the end of a bucket is hingedly connected to a shaft hole at the lower end of a dipper. The lug at the middle of the bucket is hingedly connected to a shaft hole at the lower end of a bucket push rod. A bucket oil cylinder is provided. The bucket oil cylinder is used for driving the bucket to turn. A swing arm is provided. Three working shaft holes are provided on the swing arm. The three working shaft holes are triangularly arranged. The third working shaft hole of the swing rod is hingedly connected to the shaft hole at the lower end of the dipper. The first working shaft hole of the swing rod is hingedly connected to the shaft hole at the upper end of the bucket push rod. The piston rod lug of the bucket oil cylinder is hingedly connected to the second working shaft hole of the swing rod.

Description

Bucket rocker mechanism of excavator

Technical field

The invention relates to a bucket rocker arm mechanism of an excavator.

Background technique

Excavator is an indispensable engineering machine in modern society. With the development of society, people's technical requirements for excavators are getting higher and higher, especially the bucket digging force of excavators is getting bigger and bigger. In the prior art, the rocker arm (swing arm) of the bucket cylinder of the excavator is in the form of a straight arm. Two ends of the straight arm are provided with shaft holes. The bucket push rod is connected to the cylinder rod of the bucket cylinder. The bucket cylinder directly pushes the bucket to dig through the bucket push rod. In this process, the existing two-hole rocker arm only serves as a support. The shortcomings of the existing two-hole rocker arm are that the bucket cylinder requires a large stroke to push the bucket into place, and has the problems of small digging force and slow digging speed.

Summary of the invention

The object of the present invention is to provide a bucket rocker arm mechanism of an excavator, which can effectively shorten the bucket cylinder stroke, increase the digging force, and increase the digging speed.

Technical solution to achieve the purpose of the present invention:

A bucket rocker mechanism of an excavator, a bucket end earring is hinged with a lower shaft hole of a bucket rod, a bucket middle earring is hinged with a lower shaft hole of a bucket push rod, and a bucket oil cylinder is provided for driving a bucket The bucket flip is characterized in that it is provided with a rocker swing lever, which is provided with three working shaft holes, the three working shaft holes are arranged in a triangle, and the third working shaft hole of the rocker swing lever and the lower shaft hole of the stick The first work shaft hole of the rocker swing lever is hinged with the upper shaft hole of the bucket push rod, and the piston rod earring of the bucket cylinder is hinged with the second work shaft hole of the rocker swing lever.

Further, the rocker swing lever has a 7-shaped shape, corresponding to the three vertices of the rocker swing lever, respectively provided with three working shaft holes, the three working shaft holes are set in a triangle; the piston rod earrings of the bucket cylinder pass through the rocker swing lever The second working shaft hole is hinged with the rocker swing lever; the second working shaft hole corresponds to the middle vertex of the rocker swing lever.

Further, the rocker swing lever is arc-shaped, the rocker swing lever is provided with three working shaft holes, and the three working shaft holes are set in a triangular shape. The piston rod earrings of the bucket cylinder are connected with the second work shaft hole of the rocker swing lever. The rocker swing lever is hinged; the second working shaft hole is a shaft hole in the middle position of the rocker swing lever.

The invention has the beneficial effects:

In the present invention, a rocker swing lever is provided with three working shaft holes, and the three working shaft holes are arranged in a triangle. The third working shaft hole of the rocker swing lever is hinged with the lower shaft hole of the stick. The first working shaft hole of the swing lever is hinged with the upper end shaft hole of the bucket push rod, and the piston rod earring of the bucket cylinder is hinged with the second working shaft hole of the rocker swing lever. The rocker swing lever of the present invention is provided with three working shaft holes. The rocker swing lever not only plays a supporting role but also plays a driving role. That is, the bucket cylinder pushes the bucket stick through the rocker swing lever, so that the bucket is turned over. . Due to the unique three-hole rocker swing lever structure of the present invention, the present invention can effectively shorten the bucket cylinder stroke, increase the digging force, and increase the digging speed. Compared with the prior art, the present invention can shorten the stroke length of the bucket cylinder by about one fifth, the bucket digging force of the excavator can be increased by about one fifth, and the bucket digging speed can be accelerated by about one fifth. At the same time, it also achieves the effect of reducing the pressure of the hydraulic oil in the cylinder and saving fuel.

The rocker swing lever of the present invention is 7-shaped or arc-shaped, corresponding to the three vertices of the rocker swing lever, respectively provided with three working shaft holes, and the three working shaft holes are set in a triangle; the piston rod earrings of the bucket cylinder pass through the rocker arm. The second working shaft hole of the swing lever is hinged with the swing arm swing lever. The three working shaft holes of the rocker swing lever of the present invention are not on the same straight line, which further ensures the effects of shortening the bucket cylinder stroke, increasing the digging force, and increasing the digging speed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of a bucket in a digging state according to the present invention.

detailed description

Embodiment one:

As shown in FIG. 1, the front end of the boom 1 is hinged with the arm 2, and an arm cylinder 3 is provided correspondingly, and the arm cylinder 3 is used to drive the arm 2 to rotate. Buckle 8 end earrings are hinged to the lower shaft hole of the bucket 2; bucket 8 middle earrings are hinged to the lower shaft hole of the bucket pusher 5; a bucket cylinder 7 is provided to drive the bucket 8 to flip, this is current technology.

A rocker swing lever 4 is provided, each of which is provided with three working shaft holes, and the three working shaft holes are arranged in a triangle. The third working shaft hole of the rocker swing lever is hinged with the lower shaft hole of the arm 2 and the rocker swing The first working shaft hole of the rod is hinged with the upper shaft hole of the bucket pusher 5. The piston rod earring of the bucket cylinder 7 is hinged with the second working shaft hole of the rocker lever 4. A corresponding hinge shaft is provided in the working shaft hole. 6. In this embodiment, the rocker swing lever has a 7-shaped shape, corresponding to the three vertices of the rocker swing lever, respectively provided with three working shaft holes, and the three working shaft holes are set in a triangle; the piston rod earrings of the bucket cylinder pass through the rocker arm. The second working shaft hole of the swing lever is hinged with the rocker swing lever; the second working shaft hole corresponds to the middle vertex of the swing arm swing lever.

As shown in Figures 1 and 2, during operation, the bucket cylinder 7 pushes the bucket push rod 5 through the rocker lever 4 to drive the bucket 8 to turn over, thereby effectively shortening the bucket cylinder stroke, increasing the digging force and improving the digging. speed.

Embodiment two:

The difference between the second embodiment and the first embodiment is that the swing arm swing bar is arc-shaped, and the remaining structure and working principle are the same as those of the first embodiment.

Claims

A bucket rocker mechanism of an excavator, a bucket end earring is hinged with a lower shaft hole of a bucket rod, a bucket middle earring is hinged with a lower shaft hole of a bucket push rod, and a bucket oil cylinder is provided for driving a bucket The bucket flip is characterized in that it is provided with a rocker swing lever, which is provided with three working shaft holes, the three working shaft holes are arranged in a triangle, and the third working shaft hole of the rocker swing lever and the lower shaft hole of the stick The first work shaft hole of the rocker swing lever is hinged with the upper shaft hole of the bucket push rod, and the piston rod earring of the bucket cylinder is hinged with the second work shaft hole of the rocker swing lever.
The bucket rocker mechanism of the excavator according to claim 1, wherein:

The rocker swing lever has a 7-shaped shape, corresponding to the three vertices of the rocker swing lever. There are three working shaft holes, which are set in a triangle. The piston rod earrings of the bucket cylinder work through the rocker swing lever second. The shaft hole is hinged with the rocker swing lever; the second working shaft hole corresponds to the middle vertex of the rocker swing lever.
The bucket rocker mechanism of the excavator according to claim 1, wherein:

The rocker swing lever is arc-shaped. The rocker swing lever is provided with three working shaft holes and the three working shaft holes are set in a triangle. The piston rod earrings of the bucket cylinder pass through the second working shaft hole of the rocker swing lever and the rocker swing. The lever is hinged; the second working shaft hole is a shaft hole located at the middle position of the swing arm swing lever.