CN112836299A - Method for optimizing overall stability of excavator - Google Patents

Method for optimizing overall stability of excavator Download PDF

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Publication number
CN112836299A
CN112836299A CN202110158613.8A CN202110158613A CN112836299A CN 112836299 A CN112836299 A CN 112836299A CN 202110158613 A CN202110158613 A CN 202110158613A CN 112836299 A CN112836299 A CN 112836299A
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excavator
center line
overall stability
stability
optimization method
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王书真
甄建军
王成
于海亮
张幕伟
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Strong Construction Machinery Co Ltd
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Strong Construction Machinery Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation

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  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Computational Mathematics (AREA)
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  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

The invention discloses a method for optimizing the stability of the whole excavator, which optimizes the stability of the whole excavator in the front-back direction, calculates the position of the gravity center of the excavator in the most dangerous full bucket state and the empty bucket recovery state according to the moment balance principle, the gravity center line of the excavator in the two states is positioned in a slewing bearing ring in the front-back direction and is close to the slewing center line, and the ratio K of the stable moment of the gravity of each part, material, fuel oil, hydraulic oil and an operator to the tipping line and the tipping moment of the excavator is more than 1, thereby being beneficial to the stability of the whole excavator in the flat ground operation.

Description

Method for optimizing overall stability of excavator
Technical Field
The invention relates to the technical field of excavators, in particular to a method for optimizing the overall stability of an excavator.
Background
The quality of the stability of the excavator greatly affects the work of the whole excavator, the excavator with good stability not only can ensure safe work, but also can fully exert the excavating capacity in the working range, and meanwhile, the force acting on the slewing bearing device is uniform, so that the service life of the excavator is prolonged.
Therefore, the invention provides a method for improving the stability of the whole hydraulic excavator during the operation on the flat ground, which is the problem to be solved by the inventor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for optimizing the stability of the whole excavator, which can realize the function of improving the stability of the whole excavator during the operation of a hydraulic excavator on the flat ground.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for optimizing the overall stability of the excavator comprises the steps of:
(1) the stability of the excavator in the front-back direction is optimized, the position of the gravity center of the excavator in the most dangerous full bucket state and the empty bucket recovery state is calculated according to the moment balance principle, the gravity center line of the excavator in the two states is positioned in the rotary supporting ring in the front-back direction and is close to the rotary center line, and the ratio K of the stable moment of the gravity of each part, material, fuel oil, hydraulic oil and an operator to the tipping moment of the tipping line is greater than 1, so that the stability of the whole excavator in the flat ground operation is facilitated.
(2) The stability of the excavator in the left and right directions is optimized, the positions of the gravity centers of the excavator in the most dangerous full bucket state and the empty bucket retracting state are calculated according to the moment balance principle, and the gravity center line of the excavator in the two states is positioned between the rotation center line and the center line of the working device and close to the rotation center line in the left and right directions, so that the stability of the whole excavator in the flat ground operation is facilitated.
Further, the calculation formula of the moment balance principle is Lw=∑GiLi/Gw(i=1,2,3...)。
Further, L iswIs the coordinate of the gravity center position of the whole machine GwIs the total weight of the machine, GiFor excavator component weight, LiIs the position coordinate of the center of the part.
Further, L isiThe numerical value of (a) is based on the excavator rollover edge line, the part is negative on the front side of the rollover edge, and the part is positive on the rear side of the rollover edge.
Further, L isiThe numerical value of (d) is based on the center line of gyration, the component is negative on the left side of the center line of gyration, and the component is positive on the right side of the center line of gyration.
Further, the whole machine quality comprises the quality of each part forming the excavator.
The invention has the beneficial effects that:
1. according to the method, the action position which is beneficial to the stability of the whole excavator is calculated according to the moment balance principle, the stability of the excavator is adjusted to a higher degree, so that the excavator can give full play to the excavating capacity, the stress of the rotary device can be uniform, the service life is prolonged, and the function of improving the stability of the whole excavator during flat ground operation is realized.
Drawings
Fig. 1 is a front view of the excavator in a full bucket and in a most unstable state.
FIG. 2 is a front view of the excavator with the bucket retracted.
Fig. 3 is a top view of the excavator in the fully loaded most unstable state.
Fig. 4 is a top view of the empty bucket of the excavator in a retracted state.
Description of reference numerals: 1-centre of gyration; 2-tipping sidelines; 3-center line of the working device.
Detailed Description
The invention will now be further illustrated by reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Further, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents may fall within the scope of the invention as defined in the appended claims.
Referring to fig. 1 to 4, a main view of a full bucket most unstable state of an excavator, a main view of an empty bucket retracting state of the excavator, a top view of the full bucket most unstable state of the excavator, and a top view of the empty bucket retracting state of the excavator according to the present invention are shown, and an overall stability optimization method of the excavator includes a front-back stability and a left-right stability, and the overall stability optimization method includes:
(1) the stability of the excavator in the front-back direction is optimized, the position of the gravity center of the excavator in the most dangerous full bucket state and the empty bucket recovery state is calculated according to the moment balance principle, the gravity center line of the excavator in the two states is positioned in the slewing bearing ring in the front-back direction and is close to the slewing center line 1, and the ratio K of the stable moment of the gravity of each part, material, fuel oil, hydraulic oil and an operator to the tipping moment of the tipping line is greater than 1, so that the stability of the whole excavator in the flat ground operation is facilitated.
(2) The stability of the excavator in the left and right directions is optimized, the positions of the gravity centers of the excavator in the most dangerous full bucket state and the empty bucket recovery state are calculated according to the moment balance principle, and the gravity center line of the excavator in the two states is positioned between the rotation center line 1 and the working device center line 3 in the left and right directions and is close to the rotation center line 1, so that the stability of the whole excavator in the flat ground operation is facilitated.
The calculation formula of the moment balance principle is Lw=∑GiLi/Gw(i=1,2,3...)。
LwIs the coordinate of the gravity center position of the whole machine GwIs the total weight of the machine, GiFor excavator component weight, LiIs the position coordinate of the center of the part.
LiThe numerical value of (c) is based on the excavator rollover borderline 2, the part is negative on the front side of the rollover edge and the part is positive on the rear side of the rollover edge.
LiThe numerical value of (d) is based on the center line of gyration 1, the component is negative on the left side of the center line of gyration 1, and the component is positive on the right side of the center line of gyration 1.
The quality of the whole excavator comprises the quality of each part forming the excavator.
The hydraulic excavator works on the flat ground. According to the moment balance principle, the gravity center positions of the excavator in the front-back direction are calculated according to the formulas, the most dangerous state of the full bucket and the empty bucket of the excavator in the withdrawing state are calculated, the gravity center lines of the two states are positioned in the slewing bearing ring and close to the slewing center line 1 in the front-back direction, the ratio K of the stable moment of the gravity of each part, material, fuel oil, hydraulic oil and an operator to the tilting line and the tilting moment is more than 1 according to the graph 1, the stability of the excavator in the flat ground operation is facilitated, the stability of the excavator in the left-right direction is optimized according to the graphs 3 and 4, the gravity center positions of the excavator in the most dangerous state of the full bucket and the withdrawing state of the empty bucket are calculated according to the formulas, the gravity center lines of the two states are positioned between the slewing center line 1 and the working device center line 3 and are close to the slewing center line 1 in the left, the stability of the whole excavator during the operation on the flat ground is facilitated.
According to the method, the action position which is beneficial to the stability of the whole excavator is calculated according to the moment balance principle, the stability of the excavator is adjusted to a higher degree, so that the excavator can give full play to the excavating capacity, the stress of the rotary device can be uniform, the service life is prolonged, and the function of improving the stability of the whole excavator during flat ground operation is realized.

Claims (6)

1. The method for optimizing the overall stability of the excavator comprises the steps of:
(1) optimizing the stability of the excavator in the front-back direction, calculating the positions of the gravity centers of the excavator in the most dangerous full bucket state and the empty bucket recovery state according to a moment balance principle, wherein the gravity center line of the excavator in the two states is positioned in the slewing bearing ring in the front-back direction and is close to the slewing center line, and the ratio K of the stable moment of the gravity of each part, material, fuel oil, hydraulic oil and an operator of the excavator to the tipping moment is more than 1, so that the stability of the whole excavator in the flat ground operation is facilitated;
(2) the stability of the excavator in the left and right directions is optimized, the positions of the gravity centers of the excavator in the most dangerous full bucket state and the empty bucket retracting state are calculated according to the moment balance principle, and the gravity center line of the excavator in the two states is positioned between the rotation center line and the center line of the working device and close to the rotation center line in the left and right directions, so that the stability of the whole excavator in the flat ground operation is facilitated.
2. The method for optimizing the overall stability of the excavator according to claim 1, wherein the method comprises the following steps: the calculation formula of the moment balance principle is Lw=∑GiLi/Gw(i=1,2,3...)。
3. The overall stability optimization method of the excavator according to claim 2, wherein the overall stability optimization method comprises the following steps: said LwIs the coordinate of the gravity center position of the whole machine GwIs the total weight of the machine, GiFor excavator component weight, LiIs the position coordinate of the center of the part.
4. The overall stability optimization method of the excavator according to claim 3, wherein the overall stability optimization method comprises the following steps: said LiThe numerical value of (a) is based on the excavator rollover edge line, the part is negative on the front side of the rollover edge, and the part is positive on the rear side of the rollover edge.
5. The overall stability optimization method of the excavator according to claim 3, wherein the overall stability optimization method comprises the following steps: said LiThe numerical value of (d) is based on the center line of gyration, the component is negative on the left side of the center line of gyration, and the component is positive on the right side of the center line of gyration.
6. The overall stability optimization method of the excavator according to claim 2, wherein the overall stability optimization method comprises the following steps: the quality of the whole excavator comprises the quality of each part forming the excavator.
CN202110158613.8A 2021-02-05 2021-02-05 Method for optimizing overall stability of excavator Pending CN112836299A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2668706Y (en) * 2004-04-29 2005-01-05 杨双来 Digging machine
CN102259799A (en) * 2011-05-05 2011-11-30 长沙中联重工科技发展股份有限公司 Crawler crane installation torque control method and device, and crawler crane
CN102561415A (en) * 2011-12-02 2012-07-11 常熟市浩通市政工程有限公司 Excavator
CN104018529A (en) * 2014-05-20 2014-09-03 山重建机有限公司 Extractor counterweight device and arranging method thereof
JP2015059382A (en) * 2013-09-20 2015-03-30 カヤバ工業株式会社 Gravity center variable device
CN105804148A (en) * 2016-03-14 2016-07-27 柳州柳工挖掘机有限公司 Control method for preventing tipping of excavator and excavator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2668706Y (en) * 2004-04-29 2005-01-05 杨双来 Digging machine
CN102259799A (en) * 2011-05-05 2011-11-30 长沙中联重工科技发展股份有限公司 Crawler crane installation torque control method and device, and crawler crane
CN102561415A (en) * 2011-12-02 2012-07-11 常熟市浩通市政工程有限公司 Excavator
JP2015059382A (en) * 2013-09-20 2015-03-30 カヤバ工業株式会社 Gravity center variable device
CN104018529A (en) * 2014-05-20 2014-09-03 山重建机有限公司 Extractor counterweight device and arranging method thereof
CN105804148A (en) * 2016-03-14 2016-07-27 柳州柳工挖掘机有限公司 Control method for preventing tipping of excavator and excavator

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