A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC DRIVE DEVICE FOR EXCAVATION WORK MACHINES
Provided is a hydraulic drive apparatus capable of precisely performing control of making a construction surface by a bucket closer to a target construction surface and making a pressing force by which the bucket is pressed against the construction surface closer to a target pressing force. The hydraulic drive apparatus includes a boom flow rate control valve (36), a target boom cylinder speed calculation part, a pressing force calculation part, a correction part, and a boom flow rate operation part. The target boom cylinder speed calculation part calculates a target boom cylinder speed for making the construction surface by the bucket closer to the target construction surface. The pressing force calculation part calculates the pressing force by which the bucket is pressed against the construction surface, based on the cylinder thrust of the boom cylinder (26) and the center-of-gravity position information on the center-of-gravity position of the work device. The correction part corrects the target boom cylinder speed to make the deviation between the target pressing force and the calculated pressing force closer to 0. The boom flow rate operation part operates the boom flow rate control valve (36) to provide the corrected target boom cylinder speed.
HYDRAULIC DRIVE DEVICE FOR EXCAVATION WORK MACHINES
Provided is a hydraulic drive apparatus capable of precisely performing control of making a construction surface by a bucket closer to a target construction surface and making a pressing force by which the bucket is pressed against the construction surface closer to a target pressing force. The hydraulic drive apparatus includes a boom flow rate control valve (36), a target boom cylinder speed calculation part, a pressing force calculation part, a correction part, and a boom flow rate operation part. The target boom cylinder speed calculation part calculates a target boom cylinder speed for making the construction surface by the bucket closer to the target construction surface. The pressing force calculation part calculates the pressing force by which the bucket is pressed against the construction surface, based on the cylinder thrust of the boom cylinder (26) and the center-of-gravity position information on the center-of-gravity position of the work device. The correction part corrects the target boom cylinder speed to make the deviation between the target pressing force and the calculated pressing force closer to 0. The boom flow rate operation part operates the boom flow rate control valve (36) to provide the corrected target boom cylinder speed.
HYDRAULIC DRIVE DEVICE FOR EXCAVATION WORK MACHINES
HYDRAULISCHE ANTRIEBSVORRICHTUNG FÜR AUSHUBMASCHINEN
DISPOSITIF DE COMMANDE HYDRAULIQUE DE MACHINES DE TRAVAIL D'EXCAVATION
NOGI TOSHIHIRO (author) / MAEKAWA SATOSHI (author) / TSUTSUI AKIRA (author) / FUJIWARA SHO (author)
2023-10-18
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
Machines for hydraulic excavation work
| Springer Verlag | 1975
Machines for hydraulic excavation work
| Online Contents | 1975