WO2020011063A1 - 挖掘机的斗杆摇臂机构 - Google Patents

挖掘机的斗杆摇臂机构 Download PDF

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Publication number
WO2020011063A1
WO2020011063A1 PCT/CN2019/094387 CN2019094387W WO2020011063A1 WO 2020011063 A1 WO2020011063 A1 WO 2020011063A1 CN 2019094387 W CN2019094387 W CN 2019094387W WO 2020011063 A1 WO2020011063 A1 WO 2020011063A1
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Prior art keywords
arm
rocker
shaft hole
working shaft
hinged
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PCT/CN2019/094387
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English (en)
French (fr)
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杨双来
杨棋翔
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杨双来
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Publication of WO2020011063A1 publication Critical patent/WO2020011063A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/369—Devices to connect parts of a boom or an arm

Definitions

  • the invention relates to a stick rocker arm mechanism of an excavator.
  • 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.
  • the cylinder of the arm oil cylinder is directly hinged to the power arm of the arm, and the arm oil cylinder pushes the arm to rotate.
  • the shortcomings of the prior art are that the stick cylinder moves linearly, and the stick is a rotary motion.
  • the required stroke of the stick cylinder is long. Due to the long stroke of the stick cylinder, the stick operates It takes a long time to affect the mining speed.
  • An object of the present invention is to provide an arm rocker mechanism of an excavator, which can effectively shorten the arm cylinder stroke, increase the excavation force, and increase the excavation speed.
  • a stick rocker arm mechanism of an excavator, a second shaft hole at the upper part of the stick is hinged with a front end shaft hole of the excavating motor arm, and an arm cylinder is provided for driving the arm to rotate relative to the excavating motor arm. It is provided with: a rocker swing lever, a stick push rod, and a rocker bearing seat.
  • the rocker swing lever is respectively provided with three working shaft holes, and the three working shaft holes are set in a triangle.
  • the first working shaft of the rocker swing lever The hole is hinged with the shaft hole of the rocker bearing seat.
  • the rocker bearing seat is located at the front end of the excavating motor arm.
  • the third working shaft hole of the rocker swing arm is hinged with the first shaft hole of the stick pusher.
  • the second shaft hole is hinged with the power arm of the arm at the first shaft hole in the upper part of the arm; the piston rod earrings of the arm cylinder are hinged with the second working shaft hole of the rocker arm, and the arm oil cylinder drives the rocker arm by The stick putter drives the stick to rotate.
  • the rocker swing lever has a 7-shape, corresponding to the three vertices of the rocker swing lever, and is respectively provided with a first work shaft hole, a second work shaft hole, and a third work shaft hole.
  • the three work shaft holes are arranged in a triangle. ;
  • the piston rod earrings of the stick cylinder are hinged to the rocker swing lever through the second working shaft hole corresponding to the middle vertex of the rocker swing lever.
  • rocker swing lever is arc-shaped, and the rocker swing lever is respectively provided with a first working shaft hole, a second working shaft hole, and a third working shaft hole, and the three working shaft holes are arranged in a triangular shape;
  • the piston rod earrings are hinged to the rocker lever through a second working shaft hole corresponding to the middle position of the rocker lever.
  • first working shaft hole of the rocker swing link is hinged to the front of the excavator power arm through the rocker bearing seat at the front end of the excavating motor arm, and the rocker bearing seat is provided on the top surface, side or Underside.
  • the invention is provided with a rocker swing lever, a stick push rod, and a rocker arm bearing seat.
  • the rocker swing lever is provided with three working shaft holes respectively, and the three working shaft holes are arranged in a triangle.
  • the first working shaft of the rocker swing lever The hole is hinged with the shaft hole of the rocker bearing seat.
  • the rocker bearing seat is located at the front end of the excavating motor arm.
  • the third working shaft hole of the rocker swing arm is hinged with the first shaft hole of the stick pusher.
  • the second shaft hole is hinged with the power arm of the stick; the piston rod earrings of the stick cylinder are hinged with the second working shaft hole of the rocker swing lever, and the stick cylinder drives the stick to rotate by driving the rocker swing lever and the stick push rod.
  • the present invention adds a rocker swing lever and stick pusher structure.
  • the stick cylinder drives the stick to rotate by driving the rocker swing lever and stick pusher, which effectively solves the small digging force of the stick.
  • the stick cylinder has a large stroke, the stick cylinder has a large bore, the working hydraulic pressure is large, the stick cylinder and the stick are liable to form dead points, and the excavation speed is slow.
  • the working stroke of the stick cylinder of the present invention can be shortened by about a quarter, the digging force of the stick can be increased by about a quarter, and the digging speed of the stick is accelerated by about a quarter, while also reaching The effect of reducing the hydraulic oil pressure in the cylinder and saving fuel.
  • FIG. 1 is a schematic structural diagram of the present invention
  • FIG. 2 is a schematic diagram of an arm of the present invention in a digging state.
  • the second shaft hole on the upper part of the arm 2 is hinged with the front shaft hole of the excavation motor arm 1, and the arm is between the upper end of the arm 2 and the hinge point at the second shaft hole on the upper part of the arm.
  • An arm cylinder 5 is provided for driving the arm 2 to rotate relative to the excavating motor arm 1, which is the prior art. Equipped with rocker lever 3 and stick pusher 4, the rocker lever is provided with three working shaft holes respectively, and the three working shaft holes are set in a triangle. The first working shaft hole of the rocker swing lever 3 passes through the excavator.
  • the rocker bearing support 6 at the front end of the boom 1 is hinged to the front of the excavating motor arm, and the rocker bearing support is provided on the top, side or bottom surface of the front end of the excavating motor arm.
  • the hinge point is located on the top surface of the front part of the excavating motor arm.
  • the third working shaft hole of the rocker lever 3 is hinged with the first shaft hole of the stick pusher 4, and the second shaft hole of the stick pusher 4 is connected with the Power arm articulation; the piston rod earrings of the stick cylinder 5 are hinged with the second working shaft hole of the rocker lever 3, and a hinge shaft 7 is correspondingly provided in the hinge shaft hole.
  • the arm oil cylinder 5 drives the rocker lever 3
  • the stick putter 4 drives the stick to rotate.
  • the rocker swing lever has a 7-shape, and corresponding to the three vertices of the rocker swing lever, a first working shaft hole, a second working shaft hole, a third working shaft hole, and three working shaft holes are respectively formed. It is set in a triangle; the piston rod earrings of the arm oil cylinder are hinged to the rocker lever through a second working shaft hole corresponding to the middle vertex of the rocker lever.
  • the arm cylinder 5 drives the arm 2 to rotate by driving the rocker swing lever 3 and the arm push rod 4, thereby effectively reducing the arm cylinder stroke and increasing the arm digging force. Increase digging speed.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Shovels (AREA)

Abstract

本发明涉及一种挖掘机的斗杆摇臂机构，斗杆上部的第二轴孔与挖掘机动臂的前端轴孔铰接，设有斗杆油缸，用于驱动斗杆相对挖掘机动臂转动，其特征在于：设有摇臂摆杆、斗杆推杆、摇臂轴承座，摇臂摆杆上面分别设有三个工作轴孔，三个工作轴孔呈三角形设置，摇臂摆杆的第一工作轴孔与摇臂轴承座轴孔铰接，摇臂轴承座位于挖掘机动臂的前端，摇臂摆杆的第三工作轴孔与斗杆推杆的第一轴孔铰接，斗杆推杆的第二轴孔在斗杆上部的第一轴孔处与斗杆的动力臂铰接；斗杆油缸的活塞杆耳环与摇臂摆杆第二工作轴孔铰接，斗杆油缸通过驱动摇臂摆杆、斗杆推杆带动斗杆转动。本发明能够有效缩短斗杆油缸行程，增大挖掘力，提高挖掘速度。

Description

挖掘机的斗杆摇臂机构 技术领域
本发明涉及一种挖掘机的斗杆摇臂机构。
背景技术
挖掘机是现代社会不可缺少的工程机械，随着社会的向前发展，人们对挖掘机的技术要求也越来越高，特别要求挖掘机的铲斗挖掘力越来越大。现有技术中，斗杆油缸的缸杆直接与斗杆的动力臂铰接，斗杆油缸推动斗杆转动。现有技术存在的不足之处在于，斗杆油缸直线运动，而斗杆是旋转运动，挖掘机完成斗杆挖掘动作时，斗杆油缸所需行程长，由于斗杆油缸行程长，斗杆运行时间就长，影响挖掘速度。
发明内容
本发明的发明目的在于提供一种挖掘机的斗杆摇臂机构，能够有效缩短斗杆油缸行程，增大挖掘力，提高挖掘速度。
实现本发明目的的技术方案：
一种挖掘机的斗杆摇臂机构，斗杆上部的第二轴孔与挖掘机动臂的前端轴孔铰接，设有斗杆油缸，用于驱动斗杆相对挖掘机动臂转动，其特征在于：设有摇臂摆杆、斗杆推杆、摇臂轴承座，摇臂摆杆上面分别设有三个工作轴孔，三个工作轴孔呈三角形设置，摇臂摆杆的第一工作轴孔与摇臂轴承座轴孔铰接，摇臂轴承座位于挖掘机动臂的前端，摇臂摆杆的第三工作轴孔与斗杆推杆的第一轴孔铰接，斗杆推杆的第二轴孔在斗杆上部的第一轴孔处与斗杆的动力臂铰接；斗杆油缸的活塞杆耳环与摇臂摆杆第二工作轴孔铰接，斗杆油缸通过驱动摇臂摆杆、斗杆推杆带动斗杆转动。
进一步地，摇臂摆杆呈7字形，对应摇臂摆杆的三个顶点，分别设有第一工作轴孔、第二工作轴孔、第三工作轴孔，三个工作轴孔呈三角形设置；斗杆油缸的活塞杆耳环通过摇臂摆杆中间顶点对应的第二工作轴孔与摇臂摆杆铰接。
进一步地，摇臂摆杆呈弧形，摇臂摆杆上分别设有第一工作轴孔、第二工作轴孔、第三工作轴孔，三个工作轴孔呈三角形设置；斗杆油缸的活塞杆耳环通过摇臂摆杆中间位置对应的第二工作轴孔与摇臂摆杆铰接。
进一步地，摇臂摆杆的第一工作轴孔通过挖掘机动臂前端的摇臂轴承座与挖掘机动力臂前部铰接，摇臂轴承座设在挖掘机动臂前端的顶面、侧面或者底面。
本发明具有的有益效果：
本发明设有摇臂摆杆、斗杆推杆、摇臂轴承座，摇臂摆杆上面分别设有三个工作轴孔，三个工作轴孔呈三角形设置，摇臂摆杆的第一工作轴孔与摇臂轴承座轴孔铰接，摇臂轴承座位于挖掘机动臂的前端，摇臂摆杆的第三工作轴孔与斗杆推杆的第一轴孔铰接，斗杆推杆的第二轴孔与斗杆的动力臂铰接；斗杆油缸的活塞杆耳环与摇臂摆杆第二工作轴孔铰接，斗杆油缸通过驱动摇臂摆杆、斗杆推杆带动斗杆转动。与现有技术相比，本发明增设了摇臂摆杆、斗杆推杆结构，斗杆油缸通过驱动摇臂摆杆、斗杆推杆带动斗杆转动，有效解决了斗杆挖掘力小，斗杆油缸行程大、斗杆油缸缸径大、工作液压油压力大、斗杆油缸与斗杆易形成死点、挖掘速度慢问题。与现有技术相比，本发明斗杆油缸工作行程可缩短四分之一左右，斗杆挖掘力可增大四分之一左右，斗杆的挖掘速度加快四分之一左右，同时还达到降低油缸内的液压油压力、节油的效果。
附图说明
图1为本发明的结构示意图；
图2为本发明斗杆处于挖掘状态下的示意图。
具体实施方式
实施例一：
如图1所示，斗杆2上部的第二轴孔与挖掘机动臂1的前端轴孔铰接，斗杆2的上端与斗杆上部的第二轴孔处的铰接点之间为斗杆的动力臂。设有斗杆油缸5，用于驱动斗杆2相对挖掘机动臂1转动，此为现有技术。设有摇臂摆杆3、斗杆推杆4，摇臂摆杆上面分别设有三个工作轴孔，三个工作轴孔呈三角形设置，摇臂摆杆3的第一工作轴孔通过挖掘机动臂1前端的摇臂轴承座6与挖掘机动臂前部铰接，摇臂轴承座设在挖掘机动臂前端的顶面、侧面或者底面。本实施例中，铰接点位于挖掘机动臂前部的顶面。摇臂摆杆3的第三工作轴孔与斗杆推杆4的第一轴孔铰接，斗杆推杆4的第二轴孔在斗杆2上部的第一轴孔处与斗杆2的动力臂铰接；斗杆油缸5的活塞杆耳环与摇臂摆杆3的第二工作轴孔铰接，铰接轴孔内相应设有铰接轴7，斗杆油缸5通过驱动摇臂摆杆3、斗杆推杆4带动斗杆转动。本实施例中，摇臂摆杆呈7字形，对应摇臂摆杆的三个顶点，分别设有第一工作轴孔、第二工作轴孔、第三工作轴孔，三个工作轴孔呈三角形设置；斗杆油缸的活塞杆耳环通过摇臂摆杆中间顶点对应的第二工作轴孔与摇臂摆杆铰接。
如图1、图2所示，工作时，斗杆油缸5通过驱动摇臂摆杆3、斗杆推杆4带动斗杆2转动，从而有效缩短斗杆油缸行程，增大斗杆挖掘力，提高挖掘速度。
实施例二：
实施例二与实施例一的区别在于，摇臂摆杆呈弧形，其余结构和工作原理同实施例一。

Claims (4)

  1. 一种挖掘机的斗杆摇臂机构，斗杆上部的第二轴孔与挖掘机动臂的前端轴孔铰接，设有斗杆油缸，用于驱动斗杆相对挖掘机动臂转动，其特征在于：设有摇臂摆杆、斗杆推杆、摇臂轴承座，摇臂摆杆上面分别设有三个工作轴孔，三个工作轴孔呈三角形设置，摇臂摆杆的第一工作轴孔与摇臂轴承座轴孔铰接，摇臂轴承座位于挖掘机动臂的前端，摇臂摆杆的第三工作轴孔与斗杆推杆的第一轴孔铰接，斗杆推杆的第二轴孔在斗杆上部的第一轴孔处与斗杆的动力臂铰接；斗杆油缸的活塞杆耳环与摇臂摆杆第二工作轴孔铰接，斗杆油缸通过驱动摇臂摆杆、斗杆推杆带动斗杆转动。
  2. 根据权利要求1所述的挖掘机的斗杆摇臂机构，其特征在于：
    摇臂摆杆呈7字形，对应摇臂摆杆的三个顶点，分别设有第一工作轴孔、第二工作轴孔、第三工作轴孔，三个工作轴孔呈三角形设置；斗杆油缸的活塞杆耳环通过摇臂摆杆中间顶点对应的第二工作轴孔与摇臂摆杆铰接。
  3. 根据权利要求1所述的挖掘机的斗杆摇臂机构，其特征在于：
    摇臂摆杆呈弧形，摇臂摆杆上分别设有第一工作轴孔、第二工作轴孔、第三工作轴孔，三个工作轴孔呈三角形设置；斗杆油缸的活塞杆耳环通过摇臂摆杆中间位置对应的第二工作轴孔与摇臂摆杆铰接。
  4. 根据权利要求1所述的挖掘机的斗杆摇臂机构，其特征在于：
    摇臂摆杆的第一工作轴孔通过挖掘机动臂前端的摇臂轴承座与挖掘机动力臂前部铰接，摇臂轴承座设在挖掘机动臂前端的顶面、侧面或者底面。
PCT/CN2019/094387 2018-07-12 2019-07-02 挖掘机的斗杆摇臂机构 WO2020011063A1 (zh)

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