WHEEL LOADER

• Main Authors: TSUKADA YOKO, MORIKI SHUICHI, TSUTSUMI YOSHIAKI
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2023
• Subjects: DREDGING; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING

To provide a wheel loader capable of accurately and easily performing loading work with an arbitrary loading weight by accurately calculating the loaded load of a bucket during the loading work.SOLUTION: A wheel loader 1 comprises a load calculation device 32 calculates thrust force of a lift cylinder 7 and a bucket cylinder 8 from the measured values of a lift pressure sensor 25 and a bucket pressure sensor 26, and calculates the load of a bucket 3 based on the calculated thrust. The load calculation device 32 calculates the loaded load of the bucket 3 during the loading work based on the difference value obtained by subtracting the thrust force of the lift cylinder 7 and the thrust force of the bucket cylinder 8 when the same operation as during the loading work is performed with the bucket 3 in an empty state from the thrust force of the lift cylinder 7 and the thrust force of the bucket cylinder 8 during the loading work in which the bucket 3 is loaded and the dump operation and the lift operation are performed.SELECTED DRAWING: Figure 3 【課題】積込作業中におけるバケットの積載荷重を正確に演算することによって、任意の積込重量での積込作業を正確且つ容易に行うことが可能なホイールローダを提供することを目的とする。【解決手段】ホイールローダ１は、リフト圧力センサ２５及びバケット圧力センサ２６の各計測値からリフトシリンダ７及びバケットシリンダ８の各推力を演算し、演算された各推力に基づいてバケット３の積載荷重を演算する荷重演算装置３２を備える。荷重演算装置３２は、バケット３を積載状態としてダンプ動作及びリフト上げ動作を行う積込作業中のリフトシリンダ７の推力及びバケットシリンダ８の推力から、バケット３を空荷状態として積込作業中と同じ動作を行った場合のリフトシリンダ７の推力及びバケットシリンダ８の推力をそれぞれ差し引いた差分値に基づいて、積込作業中におけるバケット３の積載荷重を演算する。【選択図】図３