Granted Patent B2

US 12,492,527 · App. 18/307,331 · Granted Dec 9, 2025

Inventors: Baofeng Li (Kunshan, CN); Xing Wang (Kunshan, CN); Kunpeng Hong (Kunshan, CN)

Assignee: SANY HEAVY MACHINERY LIMITED

E02F3/435E02F9/2203

Abstract

Claims (21)

1 . A method for actively reducing an action impact of an excavator, comprising:

collecting a boom inclination angle, a stick inclination angle, a bucket inclination angle, and state information of an operating lever, of the excavator;

determining operation information of the operating lever, and judging whether the boom inclination angle, the stick inclination angle, and the bucket inclination angle are within set ranges; and

controlling, based on a judgment result whether the boom inclination angle, the stick inclination angle, and the bucket inclination angle are within the set ranges, operating states of an electronically controlled main valve and a main pump of the excavator;

wherein the judging whether the boom inclination angle, the stick inclination angle, and the bucket inclination angle are within the set ranges, comprises:

judging whether a boom real-time angle α 1 is within a set value range of α 2 to α 3 of a boom movement angle, wherein the set value range of α 2 to α 3 of the boom movement angle is a safe zone for a boom movement;

judging whether a stick real-time angle β 1 is within a set value range of β 2 to β 3 of a stick movement angle, wherein the set value range of β 2 to β 3 of the stick movement angle is a safe zone for a stick movement; and

judging whether a bucket real-time angle γ 1 is within a set value range of γ 2 to γ 3 of a bucket movement angle, wherein the set value range of γ 2 to γ 3 of the bucket movement angle is a safe zone for a bucket movement;

judging whether a change rate of the boom real-time angle satisfies α 1 /Δ t >Δ α , or whether a change rate of displacement of the operating lever in a movement direction of controlling the boom satisfies L A /Δ t >ΔV A ;

judging whether a change rate of the stick real-time angle satisfies β 1 /Δ t >Δ β , or whether a change rate of displacement of the operating lever in a movement direction of controlling the stick satisfies L B /Δ t >ΔV B ; and

judging whether a change rate of the bucket real-time angle satisfies γ 1 /Δ t >Δ γ , or whether a change rate of displacement of the operating lever in a movement direction of controlling the bucket satisfies L C /Δ t >ΔV C , wherein

Δ α is a critical value of a change rate of a boom angle, Δ β is a critical value of a change rate of a stick angle, Δ γ is a critical value of a change rate of a bucket angle, ΔV A is a critical value of the change rate of the displacement of the operating lever in the movement direction of controlling the boom, ΔV B is a critical value of the change rate of the displacement of the operating lever in the movement direction of controlling the stick, ΔV C is a critical value of the change rate of the displacement of the operating lever in the movement direction of controlling the bucket, L A is a displacement of the operating lever in the movement direction of controlling the boom, L B is a displacement of the operating lever in the movement direction of controlling the stick satisfies, L C is a displacement of the operating lever in the movement direction of controlling the bucket, and Δ t is time duration of change.

2 . The method for actively reducing the action impact of the excavator according to claim 1 , wherein the judging whether the boom inclination angle, the stick inclination angle, and the bucket inclination angle are within set ranges further comprises:

when the boom real-time angle α 1 is outside the set value range of α 2 to α 3 of the boom movement angle, judging whether an absolute value of a difference between the boom real-time angle α 1 and α Min is less than or equal to α 2 , or an absolute value of a difference between α 1 and α Max is less than or equal to α 3 ,

wherein α Max is a maximum of the boom movement angle, and α Min is a minimum of the boom movement angle.

3 . The method for actively reducing the action impact of the excavator according to claim 1 , wherein the judging whether the boom inclination angle, the stick inclination angle, and the bucket inclination angle are within set ranges further comprises:

when the stick real-time angle β 1 is outside the set value range of β 2 to β 3 of the stick movement angle, judging whether an absolute value of a difference between the stick real-time angle β 1 and β Min is less than or equal to β 2 , or an absolute value of a difference between β 1 and β Max is less than or equal to β 3 ,

wherein β Max is a maximum of the stick movement angle, and β Min is a minimum of the stick movement angle.

4 . The method for actively reducing the action impact of the excavator according to claim 1 , wherein the judging whether the boom inclination angle, the stick inclination angle, and the bucket inclination angle are within set ranges further comprises:

when the bucket real-time angle γ 1 is outside the set value range of γ 2 to γ 3 of the bucket movement angle, judging whether an absolute value of a difference between the bucket real-time angle γ 1 and γ Min is less than or equal to γ 2 , or an absolute value of a difference between γ 1 and γ Max is less than or equal to γ 3 ,

wherein γ Max is a maximum of the bucket movement angle, and γ Min is a minimum of the bucket movement angle.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (20)