Hydraulic valve controller for heavy construction installation

A technology for control devices and construction equipment, applied in the direction of fluid pressure actuation devices, mechanical equipment, transportation and packaging, etc., can solve the problems of reducing work efficiency, complex design, distracting drivers, etc.

CN1284933CInactive Publication Date: 2006-11-15SAMSUNG HEAVY IND CO LTD
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2006-11-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Prevent the sudden drop of the actuator by discharging high-pressure hydraulic fluid into the channel on the liquid supply side of the actuator when the actuator is lowered, and provide a device installed on the channel between the hydraulic pump and the actuator and control the drive of the actuator The main spool shaft barrel, a poppet valve installed on the channel between the main spool shaft barrel and the actuator to prevent the actuator from descending, and a spool shaft barrel installed between the back pressure chamber and the return path of the poppet valve. When connecting the back pressure chamber and the channel on the discharge port of the main valve core shaft barrel, and a liquid flow reduction channel connecting the back pressure and the return flow channel when the valve core shaft barrel is switched, so as to reduce the hydraulic fluid discharged from the actuator.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a hydraulic valve control device for heavy construction equipment, which can cause a small amount of high-pressure hydraulic fluid to be discharged when the hydraulic actuator is lowered toward the actuator holding valve core shaft barrel, so that when the main shaft is placed in neutral Or prevent the actuator from dropping suddenly when changing gears. Background technique

[0002] Figure 1 shows the main components of a conventional hydraulic valve control for heavy construction equipment. As shown in Figure 1, the hydraulic valve control device for heavy construction equipment includes a hydraulic pump; an actuator 15 connected to the hydraulic pump and driven when hydraulic fluid is supplied; a poppet valve 10 for opening and closing passage 12, which can supply the hydraulic fluid discharged from the hydraulic pump and the passage 13 communicating with the actuator 15 to the actuator 15; a back pressure chamber 1...

Examples

Embodiment Construction

[0025] A hydraulic valve control device for heavy construction equipment according to a preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] figure 2 Shown is a cross-sectional view of a hydraulic valve control device for heavy construction equipment according to an embodiment of the present invention, image 3 shown along figure 2 In the sectional view of line A-A, FIG. 4 is a schematic diagram of the hydraulic return pipeline of the hydraulic valve control device according to the embodiment of the present invention.

[0027] Such as figure 2 As shown in FIG. 4, the hydraulic valve control device for heavy construction equipment includes a hydraulic pump not shown, an actuator 40 connected to the hydraulic pump and driven when supplying hydraulic fluid, and an actuator 40 installed on the hydraulic pump and the actuator The main spool shaft barrel 42 on the channel between the actuators 40 ...