1. About the long arm excavator rental market.
Based on excavator leasing, Zhiguang has gone deep into the market for decades, added hundreds of excavator equipment, and set dozens of excavator leasing points in major cities across the country to provide customers with a variety of large, medium and small excavators. Our Zhiguang excavator rental company has hundreds of excellent excavator drivers to meet various engineering and technical requirements.
2. One stop rental service for long arm excavator.
Zhiguang excavator leasing company always follows the attitude of one-stop excavator leasing service. As long as the user has a phone, we use the most suitable leasing scheme to provide suitable excavator equipment for the customer and provide the best excavator construction scheme, which is closely connected with the customer.
How to solve the problem that the working speed of the long arm of excavator is too fast?
Isn't it a good thing that the extended long arm excavator works very fast in the whole project? Why does Xiaobian say it's a problem? In fact, the speed mentioned here is compared with the set speed of your excavator. Some excavators have been modified to install the telescopic boom of the excavator, which is different from the speed of the equipment itself, and the telescopic boom cannot be controlled. So how to solve this problem?
The excavator is equipped with the working device of the lengthening arm, the moving arm is long, the stick is long, the working range is large, and the safety accident is easy to occur. When the working speed of the excavator is set to the normal working speed, the speed of the moving arm and the stick line is too fast for the operator to control. Therefore, it is necessary to solve the problem that the working device of the long arm moves too fast.
2. Selection of improvement plan:
The main control valve of the excavator working device is controlled by pilot pressure oil. The valve element end of the pilot pressure oil main control valve pushes the valve element to move left and right, and opens the main control valve circuit. It can be improved by reducing the size of the main control valve.
According to the stroke and flow area curve of the main control valve core, it can be seen that the opening of the main control valve core increases gradually, and the larger the stroke of the valve core is, the larger the flow area of the main control valve is. When the spool moves to the end of the stroke, the opening is reached and the flow through the main control valve is reached.
Thus, the limit of the main control valve core can make the valve core travel. When the main slide valve controls the movement of the left and right ends, the main control slide valve can not reach the complete stroke, the opening of the main control valve can not reach, the flow area can be flowing, the flow of the hydraulic cylinder can be reduced, so as to work the speed of the equipment.
3. Implementation and verification:
Taking the dynamic split drop as an example, the operability and coordination tests of the valve core travel limit joint after installation are carried out. It is found that when a travel limit of 2.5mm is installed on the valve core displacement limit joint, the index of boom lowering and the operability of the whole machine and the standard working equipment that can reach the downward speed of the boom of the excavator can meet the demand of the excavator.