一种挖掘机摇杆结构
By setting multiple connection points on the excavator rocker arm and enhancing structural strength, the problem of rocker arm breakage under impact was solved, resulting in a longer service life and higher construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO LOVOL EXCAVATOR
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing excavator rocker arms are prone to stress concentration when subjected to impact, leading to breakage at the connection point and affecting construction progress.
Three shaft holes are provided on the vertical plate of the rocker arm to connect to the stick, connecting rod and hydraulic cylinder piston rod respectively, and are fixed by the pin fixing sleeve and cylinder to avoid the connection points from being concentrated and to enhance the overall structural strength.
It effectively prevents stress concentration, improves the service life of the rocker arm and construction progress, and ensures the stability and synergy of the rocker arm.
Smart Images
Figure CN224514295U_ABST
Abstract
Claims
1. An excavator rocker structure, characterized by, The device includes two upright plates, which are symmetrically arranged and connected by a stiffening plate. Each upright plate has three shaft holes, which are rotatably connected to the boom, connecting rod, and hydraulic cylinder piston rod by pins.
2. An excavator rocker structure as claimed in claim 1, characterised in that, The upright plate is L-shaped and includes a horizontal plate and a vertical plate. The length of the horizontal plate is greater than the length of the vertical plate, and the upright plate is integrally cast.
3. An excavator rocker structure as claimed in claim 2, wherein, The three shaft holes are designated as the first shaft hole, the second shaft hole, and the third shaft hole, and the three shaft holes on the two upright plates are set one-to-one.
4. An excavator rocker structure as claimed in claim 3, wherein, The first shaft hole is located at the end of the horizontal plate away from the vertical plate, and is used for rotatable connection with the stick via a pin.
5. An excavator rocker structure as claimed in claim 3, wherein, The second shaft hole is located at the end of the vertical plate away from the horizontal plate, and is used for rotatable connection with the connecting rod via a pin.
6. An excavator rocker structure as claimed in claim 3, wherein, The third shaft hole is located at the connection between the horizontal plate and the vertical plate, and is used to rotatably connect with the piston rod of the oil cylinder via a pin.
7. An excavator rocker structure as claimed in claim 1, wherein, A pin retaining sleeve is provided on the outside of the shaft hole, and the axis of the pin retaining sleeve coincides with the axis of the shaft hole.
8. An excavator rocker structure as claimed in claim 7, wherein, The inner wall of the pin fixing sleeve is symmetrically provided with pin fixing holes.
9. An excavator rocker structure as claimed in claim 3, wherein, A cylinder is provided inside each of the two third shaft holes, and the axis of the cylinder coincides with the axis of the third shaft hole.
10. An excavator rocker structure as claimed in claim 9, wherein, The sum of the lengths of the two cylinders is less than the distance between the two vertical plates, and the distance between the two cylinders is set.