The invention discloses a parking brake hydraulic control system and a forklift loader, the parking brake hydraulic control system is applied to a vehicle, and the parking brake hydraulic control system comprises a parking brake which comprises an oil port P1; the parking brake hydraulic oil circuit is connected with the oil port P1 and used for supplying hydraulic oil to a parking brake or releasing pressure of the parking brake; the first electromagnetic directional valve is arranged on the parking braking hydraulic oil way and used for switching the oil flow direction of the parking braking hydraulic oil way; the flow control valve is arranged on the parking brake hydraulic oil way, located between the first electromagnetic directional valve and the parking brake and used for adjusting the pressure relief flow of the parking brake when the vehicle is suddenly stopped. During sudden stop, the opening degree of the flow control valve can be controlled and adjusted before the first electromagnetic directional valve is switched, so that the flow control valve has proper flow, then the first electromagnetic directional valve is switched, the parking brake is slowly decompressed and reset, the parking brake is prevented from being directly locked after sudden stop, stable parking is achieved, and the whole vehicle is prevented from being impacted.
本发明公开了一种驻车制动液压控制系统及叉装车,驻车制动液压控制系统应用于车辆,包括:驻车制动器,其包括油口P1;驻车制动液压油路,与油口P1相连,用于向驻车制动器供应液压油,或使驻车制动器泄压;第一电磁换向阀,设于驻车制动液压油路,用于切换驻车制动液压油路的油液流向;流量控制阀,设于驻车制动液压油路,且位于第一电磁换向阀和驻车制动器之间,用于当车辆急停时调节驻车制动器的泄压流量。急停时,可在第一电磁换向阀切换之前,控制调节流量控制阀的开度大小,使流量控制阀具有合适流量,再切换第一电磁换向阀,使驻车制动器缓慢泄压复位,防止拍急停后驻车制动器直接抱死,实现平稳驻车,避免了车辆产生整车冲击。
Parking brake hydraulic control system and forklift loader
一种驻车制动液压控制系统及叉装车
2022-06-07
Patent
Elektronische Ressource
Chinesisch
IPC: | F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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