Research on Fast Drawing Method of Excavation Envelope Diagram of Hydraulic Excavator

Author(s):  
Li Anhu ◽  
Zhao Zusheng ◽  
Xiao Xuekun ◽  
Gong Wei
2019 ◽  
Vol 139 (4) ◽  
pp. 388-394 ◽  
Author(s):  
Masatoshi Kozui ◽  
Kazushige Koiwai ◽  
Toru Yamamoto ◽  
Koji Ueda ◽  
Koji Yamashita ◽  
...  
Keyword(s):  

2019 ◽  
Vol 16 (3) ◽  
pp. 202-213 ◽  
Author(s):  
G. G. Buriy ◽  
V. S. Shherbakov ◽  
S. B. Skobelev ◽  
V. F. Kovalevskiy

Introduction.Construction of engineering structures is impossible without building and road machines. The large volume of financing is allocated for such machines’ purchase. The main ways of reducing costs of the equipment consist in more rational operation of the equipment and also in decrease of equipment’s cost by constructive changes. The paper demonstrates the new design of the single-bucket hydraulic excavator with smaller cost.Materials and methods.The main ways of cost reduction for construction machines are more rational operation and depreciation of a design with the required characteristics’ maintaining. The paper describes constructive changes of the working equipment of the single-bucket hydraulic excavator, which allow decreasing the production costs.Results.The authors describe the new bucket design of the single-bucket hydraulic excavator. Moreover, the authors carry out the analysis of the existing buckets’ design. The paper also illustrates the functioning on bucket forces while digging process. The authors describe the solutions of the problem for productivity increase of the single-bucket in hydraulic excavators. In addition, the authors make the scheme of the bucket loading while digging process. Such scheme helps to reduce resistance forces of digging.Discussion and conclusions.As a result, the paper presents the design of the working equipment of the hydraulic excavator’s single-bucket, which allows reducing resistance forces of digging. Such results would help to establish buckets of bigger capacity and would lead to the productivity increase.


IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 64776-64784
Author(s):  
Masatoshi Kozui ◽  
Toru Yamamoto ◽  
Hideo Yoshihara ◽  
Kazushige Koiwai ◽  
Koji Yamashita

1993 ◽  
Vol 115 (2) ◽  
pp. 224-229 ◽  
Author(s):  
K. Yamaguchi ◽  
K. Kanayama ◽  
M. H. Parsa ◽  
N. Takakura

A new deep drawing process of sheet metals is developed to facilitate small-lot production of deep cups with large drawing ratio. In this process, unlike the conventional deep drawing method, a few drawn cups are always stacked on the punch and used as a part of punch for the subsequent deep drawing of a given blank. Before drawing a new blank, a drawn cup which is in contact with the punch is stripped off. The repetition of such stripping and drawing operations makes it possible to carry out both the first-stage drawing and the subsequent slight redrawings in one drawing operation using only one pair of punch and die. In this paper, this new deep drawing process is applied to the production of tapered cups and the main feature of the process is shown.


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