A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydraulic control system for power gearbox of wheel excavator
The invention discloses a hydraulic control system for a power gearbox of a wheel excavator. The hydraulic control system comprises a main pump (4), a gear pump (5), a pilot pump (6), a motor pump (11), an electromagnetic reversing valve bank (9), a power gear shifting valve (13) and a gearbox (14). The main pump, the gear pump and the pilot pump are driven by an engine (3), the motor pump is formed by driving a gear pump (11-2) through a motor (11-1), and the electromagnetic reversing valve bank, the power gear shifting valve and the gearbox sequentially communicate. The gear pump communicates with an oil inlet of the motor through a central revolving body (10). The pilot pump communicates with the power shift valve through the electromagnetic reversing valve bank. The gearbox communicates with the gear pump through the power shift valve. According to the hydraulic control system for the power gearbox of the wheel excavator, the motor pump and the specially-made power shift valve areadditionally arranged to change the hydraulic control system of a clutch, the stability of the hydraulic system is improved, gear shifting is smoother, the labor intensity of a driver is thus relieved, and the operation efficiency is improved. Especially, through the addition of the motor pump, the reliability of the gearbox is greatly improved.
本发明公开一种用于轮式挖掘机动力变速箱的液压控制系统。包括由发动机（3）驱动的主泵（4）、齿轮泵（5）和先导泵（6），由马达（11‑1）驱动齿轮泵（11‑2）构成的马达泵（11），及依次连通的电磁换向阀组（9）、动力换挡阀（13）和变速箱（14）；齿轮泵通过中心回转体（10）与马达的进油口连通；先导泵通过电磁换向阀组与动力换挡阀连通；变速箱通过动力换挡阀与齿轮泵连通。本用于轮式挖掘机动力变速箱的液压控制系统通过增加马达泵和特制的动力换挡阀改变离合器的液压控制系统，提高了液压系统稳定性，使换挡更平顺，从而降低了驾驶员的劳动强度,提高了作业效率，特别是通过增加马达泵，大幅提高了变速箱的可靠性。
Hydraulic control system for power gearbox of wheel excavator
The invention discloses a hydraulic control system for a power gearbox of a wheel excavator. The hydraulic control system comprises a main pump (4), a gear pump (5), a pilot pump (6), a motor pump (11), an electromagnetic reversing valve bank (9), a power gear shifting valve (13) and a gearbox (14). The main pump, the gear pump and the pilot pump are driven by an engine (3), the motor pump is formed by driving a gear pump (11-2) through a motor (11-1), and the electromagnetic reversing valve bank, the power gear shifting valve and the gearbox sequentially communicate. The gear pump communicates with an oil inlet of the motor through a central revolving body (10). The pilot pump communicates with the power shift valve through the electromagnetic reversing valve bank. The gearbox communicates with the gear pump through the power shift valve. According to the hydraulic control system for the power gearbox of the wheel excavator, the motor pump and the specially-made power shift valve areadditionally arranged to change the hydraulic control system of a clutch, the stability of the hydraulic system is improved, gear shifting is smoother, the labor intensity of a driver is thus relieved, and the operation efficiency is improved. Especially, through the addition of the motor pump, the reliability of the gearbox is greatly improved.
本发明公开一种用于轮式挖掘机动力变速箱的液压控制系统。包括由发动机（3）驱动的主泵（4）、齿轮泵（5）和先导泵（6），由马达（11‑1）驱动齿轮泵（11‑2）构成的马达泵（11），及依次连通的电磁换向阀组（9）、动力换挡阀（13）和变速箱（14）；齿轮泵通过中心回转体（10）与马达的进油口连通；先导泵通过电磁换向阀组与动力换挡阀连通；变速箱通过动力换挡阀与齿轮泵连通。本用于轮式挖掘机动力变速箱的液压控制系统通过增加马达泵和特制的动力换挡阀改变离合器的液压控制系统，提高了液压系统稳定性，使换挡更平顺，从而降低了驾驶员的劳动强度,提高了作业效率，特别是通过增加马达泵，大幅提高了变速箱的可靠性。
Hydraulic control system for power gearbox of wheel excavator
一种用于轮式挖掘机动力变速箱的液压控制系统
YUAN CHAOGUO (author) / YIN YANGUO (author) / WANG PIAO (author) / ZHAO PING (author) / HUANG JIANGE (author) / ZHOU PENGCHENG (author)
2020-12-08
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
Wheel excavator hydraulic torque converter gearbox and transmission mechanism
| European Patent Office | 2020
Hydraulic control system and control method for wheel excavator
| European Patent Office | 2024
| European Patent Office | 2022
Hydraulic excavator control system, hydraulic excavator and control method
| European Patent Office | 2023