Patents by Inventor Junhui ZOU

Junhui ZOU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • CONTROL METHOD FOR CONTROLLING RETRACTION OF BOOM, MECHANICAL DEVICE AND STORAGE MEDIUM
    Publication number: 20240343530
    Abstract: A control method for controlling retraction of a boom is applied to a hydraulic system which combines retraction of the boom by self-weight with retraction of the boom by pressure. The control method includes: when the boom is retracted, controlling the self-weight retraction proportional valve to be at a maximum opening; obtaining an actual speed at which the boom is retracted; controlling a rotation speed of the pressure retraction motor to rise or an opening degree of the pressure retraction proportional valve to increase when the actual speed is less than a preset speed; and controlling the rotation speed of the pressure retraction motor to reduce or the opening degree of the pressure retraction proportional valve to decrease when the actual speed is greater than the preset speed.
    Type: Application
    Filed: June 24, 2024
    Publication date: October 17, 2024
    Applicant: HUNAN SINOBOOM INTELLIGENT EQUIPMENT CO., LTD.
    Inventors: Junhui ZOU, Guoliang LIU, Wei SHI