Casting technology of nodular cast iron valve body for hydraulic control valve of excavator
The casting adopts the green sand production process, and the sand core is made of coated sand. The mold plate […]
The casting adopts the green sand production process, and the sand core is made of coated sand. The mold plate […]
Excavators are widely used in highway, bridge, construction, breeding pond, underground engineering, emergency excavation and other engineering construction fields. It
Under the same process parameters, three sand casting schemes were numerically simulated (Fig. 1). It can be seen from the
Three process schemes of sand casting were numerically simulated by ProCAST software. The model is modeled by Pro / E
The sand casting of the boss at the root of a boom is made of ZG25, with a total length
The boom is one of the key parts of the excavator frame (boss). In the early stage, this product was
Because the image segmentation method based on deep learning can segment the better bucket tooth contour of excavator, the length
The series of studies are carried out on the related problems of bucket tooth fault detection of excavator bucket, and
From the algorithm description of fault bucket tooth positioning designed, it can be seen that the analysis logic of fault
It is the algorithm flow of the whole bucket tooth fault detection system of excavator. This algorithm needs to detect
In computer vision, the purpose of target detection is to extract the region of interest from the image or video,
In the process of investigation and research, after certain search, it is found that there is no special arrangement of
Starting from the application background and application status of open-pit mining excavator, this paper discusses the importance of fault detection
This paper studies the bucket tooth fault detection of mining excavator bucket, combines digital image processing, computer vision and other
1. Simulation of mold filling process of excavator rear axle casting After improving the process, the mold filling process of
1. Optimization of gating system In view of the turbulent flow caused by the unstable flow of liquid metal in
The numerical simulation is carried out by AnyCasting software. The material is set as zg20simn, the pouring temperature is 1580
During the operation of the electric shovel, the bucket is the main working part. In the mining process, the bucket,
(1) There should not be too much recycled sand in the core sand, because there are too many fine sand
Bucket teeth are the key vulnerable parts of mining excavators. Their working objects are generally ore, rock or soil. The
China has a vast territory, vast territory and abundant resources, rich and complete types of mineral resources, and open-pit mining
The rear axle of the excavator is shell type and of high quality. The original process of the factory adopts
The rear axle of high-speed excavator is the installation device of differential and half shaft, and bears the counter torque
Therefore, we analyze and sort out the causes of sand sticking in cast wear-resistant low alloy steel and the preventive
Bucket teeth are the main vulnerable parts of the open pit excavator. The casting has a unit weight of 130kg,
1. Pattern making The quality of pattern is one of the keys to the success or failure of lost foam
The loading of rock (hardness f = 12-14) in a mine is mainly completed by w-1001, w401 and km-602a excavators.
The main machine of excavator balance weight is an export product, and the requirements of surface quality and geometric size
The counterweight iron material is HT100, and the structure is shown in Figure 1. It is a “bread” shape, on
With low carbon and low alloy steel zg14crmnsini, the wear resistance and hardness of bucket teeth are improved by advanced