Automatic hydraulic change-over valve

Automatic hydraulic change-over valve

CN
  • CN 100,593,645 C
  • Filed: 05/04/2008
  • Issued: 03/10/2010
  • Est. Priority Date: 05/04/2008
  • Status: Active Grant
First Claim
Patent Images

1. , automatic hydraulic change-over valve, comprise valve body, hydraulic control, pressure gauge and base, described hydraulic control is located at the valve body center upper portion, two pressure gauges place on the joint chair of valve body top the right and left, joint chair communicates with oil circuit, described valve body antetheca is provided with oil outlet A and oil outlet B, the valve body rear wall is provided with oil inlet P and return opening R, described valve inner is provided with two piston cavity, be equipped with main piston and control piston and end in the chamber respectively and leave the space respectively, described hydraulic control, the main piston chamber is communicated with by the oil circuit in the valve body with the control piston chamber, described oil circuit leads to oil inlet P respectively, oil outlet A, oil outlet B and return opening R is characterized in that described oil circuit annexation is as follows:

  • oil inlet P is communicated with middle part, main piston chamber;

    Described oil outlet A and oil outlet B are communicated with the middle left part and the middle right part in main piston chamber respectively, and oil outlet A also is communicated with the left end in control piston chamber, and oil outlet B also is communicated with the right-hand member in control piston chamber;

    Return opening R is communicated with main piston chamber and control piston chamber;

    The hydraulic control bottom is communicated with middle part, main piston chamber, below forms working connection;

    The piston place of hydraulic control is provided with an oil circuit, and an oil circuit two ends is communicated with middle part, control piston chamber;

    The middle left part in control piston chamber is communicated with main piston chamber left end, and the middle right part in control piston chamber is communicated with the right-hand member in main piston chamber.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×