Hydraulic control system of leveling oil cylinder of loading head
US10590627B2 · kind B2 · utility
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2Claims
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Assignee
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Key dates
| Filing date | Mar 27, 2018 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Apr 28, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/327
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention discloses a hydraulic control system of a leveling hydraulic cylinder of a loading head, characterized by comprising a hydraulic pump, a two-position three-way electronic control reversing valve, a three-position four-way electronic control reversing valve, a three-position four-way cam valve and a hydraulic cylinder. The invention not only can perform leveling by using the electric control system, but also comprises the hydraulic cam valve controlling the hydraulic cylinder for self-leveling, and the two leveling manners can be independently used or switched mutually, thus achieving a better leveling effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.