In recent years, the electric spray excavators, which represent the future development trend, more environmental protection and more energy saving, have been gradually popularized in China. However, due to the specific environment of our market, the concerns of the users have not completely eliminated the concerns of the electric and electrical excavators. Tonnage direct injection excavator (Hitachi ZX200-3G), let's see what features it has.
The main character of this article is the latest product launched by Hitachi construction machinery in 2010: Hitachi ZX200-3G..
ZX200-3G is a new product developed on Hitachi ZX200-3 based on a specific market environment in China. For users, the biggest difference between -3G and -3 is that Hitachi built up the electric jet engine that was previously criticized by many users, equipped with a direct injection engine that is more suitable for China's national conditions, and aims to reduce the oil quality of the diesel oil. The engine failure rate caused.
Use of the Isuzu AA-6BG1T direct injection engine
This direct injection diesel engine has been adopted by many engineering machinery, and it is highly reliable in the harsh field environment. Using mechanical oil supply mode, even in the field of difficult fuel management, there are few malfunctions caused by impurities, and the time of shutdown is effectively reduced.
Substantially enhanced lower walking body
In bad working conditions, not only the front end working device and the lower walking body also bear great stress.
In order to improve the long-term reliability of the machine, it is very important to strengthen the lower walking body. Therefore, a large number of reinforcement measures for the structural parts of the lower walking body are implemented.
Strengthen the structure of X beam and improve the quality
By increasing the size of the box of the X beam and improving the structure design, the maximum section performance is increased by 35% (ZAXIS-1). Moreover, the upper and lower plates are formed by the whole plate bending. The strength and quality of the structure of the X beam are improved by reducing the welding position.
Fortified tow chain wheel
By increasing the size of the chain wheel and increasing the thickness of the mounting bracket of the sprocket, the durability is improved.
Prevent the deformation of the tensioning wheel support
The thickness of the fixed plate of the tensioning wheel support is added, and the thickness of the guard plate to prevent the rail chain from being separated from the tensioner wheel is also increased. It can prevent the support from opening outward, and can effectively improve the durability of the track chain and the rolling wheel and other parts of the lower walking body.
Reinforced track chain
The overall thickness of the track chain is 10%, which improves the durability.
Strengthened front-end work units
The H type bucket at the bottom of 0.80m3 adopts a flat bottom shovel and protects the welding position through the wear-resistant plate. Moreover, the lateral wear-resistant plate is installed at the bottom of the bucket to improve the durability of the bucket.
The wear resistance of the contact surface to the contact surface of the front end of the bucket and the front of the bucket is greatly improved by using the WC solution, and the W C (tungsten carbide) is applied to the contact surface of the front end of the bucket rod and the bucket, which greatly reduces the wear of the contact surface.
Using HN bushing
The front end connection uses the HN bushing.
The high hardness sintered metal with carburized quenching can maintain a large amount of grease and obtain excellent lubrication and durability, and the use of reinforced resin thrust sheet can prevent the noise of the connecting part of the front end working device.
Summary
Through the introduction of the above "20 ton grade direct injection excavator evaluation - Hitachi ZX200-3G", we can see that the -3G product is a new product developed on the basis of the careful investigation of the Hitachi construction machine on the basis of -3. What is the performance of the ZX200-3G product in the Chinese market and whether it can gradually make up for the user "Hitachi electric spray fault door" The shadow produced in the event also needs to be tested by the market and registered monument.
