Title:
HYDRAULIC CYLINDER WITH TUNING FUNCTION AND HYDRAULIC DEVICE USING THE HYDRAULIC CYLINDER
Document Type and Number:
Japanese Patent JP2020060271
Kind Code:
A
Abstract:
To provide a hydraulic cylinder with a tuning function which does not require a complicated hydraulic circuit.SOLUTION: In a hydraulic 100 attached to a piston 11 to a cylinder tube 1 so as to project from and retract into the cylinder tube 1, a cylindrical spool 30 is slidably provided in the piston rod 11, and a resilient member 50 pressing the spool 30 in a pressure oil chamber 10 direction is provided. A partition wall 34 having a decompression hole 35 is provided in the spool 30. A pressure oil inflow path H1 is provided between an inflow port 6 of pressure oil Y provided in the cylinder tube 1 and one space 36 of the partition wall 34, and a pressure oil channel H3 is provided between the other space 33 of the partition wall 34 and the pressure oil chamber 10. A logic valve 20 is provided between the pressure oil chamber 10 and a discharge port 7 of the cylinder tube 1. The pressure oil Y is supplied into an inflow port and the logic valve 20 at the time of normal operation. The discharge port 7 is connected to a tank 140, and the inflow port, the logic valve 20, and the discharge port 7 are connected to the tank 140 at the time of reverse operation.SELECTED DRAWING: Figure 1
Inventors:
KUBO TOMIO
SHIGETOMO TAKURO
OKAMURA TADASHI
SHIGETOMO TAKURO
OKAMURA TADASHI
Application Number:
JP2018192795A
Publication Date:
April 16, 2020
Filing Date:
October 11, 2018
Export Citation:
Assignee:
RAPIIT:KK
International Classes:
F15B15/14; B30B1/34; B30B15/20; B30B15/24; F15B11/08; F15B15/18
Attorney, Agent or Firm:
Yoshiaki Mori
Maki Ichikawa
Maki Ichikawa