JPH0198712U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a hydraulic control circuit showing an embodiment of the device of the present invention, and FIG. 2 is a longitudinal sectional view showing an example of a switching valve in the device of the present invention. Explanation of symbols, 1... Oil pump, 2... Reserve tank, 3... Relief valve, 5, 6... Main accumulator, 7... Suspension cylinder, 8... Control valve, 11, 31... Normally open type electromagnetic on-off valve, 13, 14, 15... Normally closed type operated check valve.

Claims (1)

[Claims for Utility Model Registration] (1) In an attitude control mechanism in which hydraulic oil supply pressure from an oil pump is applied to a suspension cylinder after pressure reduction processing by a control valve, the supply pressure circuit is of a normally open type. A bypass circuit to the oil tank having an electromagnetic on-off valve is attached, and the supply pressure circuit is branched into a front wheel side circuit and a rear wheel side circuit each equipped with an independent accumulator, and Each normally-closed switching valve that opens and closes using the set static load equivalent pressure as a pilot pressure is placed at the branch position of these circuits on both sides, and furthermore, the hydraulic oil is supplied to the hydraulic oil discharge circuit from the front wheel side and the rear wheel side. A vehicle attitude control device comprising a normally closed switching valve that opens and closes using pilot pressure. (2) The vehicle attitude control device according to claim 1, wherein the control valve is a flow rate control valve with pressure compensation. (3) The vehicle attitude control device according to claim 1, wherein the bypass circuit is an orifice passage with a throttle. (4) The vehicle attitude control device according to claim 1, wherein the switching valve is an operated check valve. (5) When the exhaust circuit is a common circuit for the front wheel side and the rear wheel side, the scope of the utility model registration claim is that an inflow prevention check valve is disposed in the exhaust circuit on the side where the static load is smaller. The vehicle attitude control device according to item 1. (6) Claim 1 of the Utility Model Registration Claim, in which the front wheel side circuit and the rear wheel side circuit are each provided with a normally open electromagnetic shut-off valve with a throttle that communicates with the left and right wheel suspension cylinders. Attitude control device for vehicles.