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Note: Because the boom cylinder is extended and retracted in place before oil is discharged, only one chamber of all boom cylinders is filled with oil; the other chamber is filled with oil due to the expansion and contraction of the oil cylinder, so the volume of oil contained in the other chamber is very small and can be ignored. . For example: the boom cylinder is extended in place before oil discharge,

The 32-meter pump truck boom, especially the plates of the first few arms connected to the turntable, generally use high-strength steel plates. When high-strength steel plates ensure yield strength, some indicators such as plasticity, ductility, and weldability are reduced, especially during welding. The thermal stress affected zone formed during the welding process causes the strength of the weld and surrounding areas to decrease.

The 32-meter 5RZ short boom pump truck has become the focus of attention in the recent urban and rural markets. With the continuous advancement of new rural construction, the market demand for short booms is also increasing. Why is the 32-meter pump truck of Saintyol DAWIN so popular?

Saintyol DAWIN newly launched a 32-meter pump truck with five-section boom and two bridges. Here are some highlights of this truck:

The location of the pump truck should be flat and firm, with no obstacles around it and no high-voltage power lines in the sky. Pump trucks must not be parked on slopes.

Today, I have summarized some rules for you to pay attention to when operating a concrete pump truck. How to do it correctly and according to the regulations. Here are some important points to share with you:

At the top dead center of the oil cylinder, check whether the S valve is operating at normal speed and position. After the oil cylinder reaches the top dead center, it will automatically change direction. At the top dead center of the oil cylinder, check whether one of the two swing valve cylinders reaches the discharge port correctly.

Many people don't understand the importance of the cleanliness of pump trucks. Many people mistakenly think that as long as the equipment is checked regularly and there is nothing wrong with it, it is not the case. Its cleanliness also has a crucial impact on pumping. Let me analyze for you today, how big the impact is.

Secondary piston: In the state of electronic control, the secondary oil flow of the pilot controls the secondary piston independently. The negative flow does not participate in direct control, but the pressure parameter is collected by the negative pressure sensor and provided to the computer, which is calculated by the computer as the control electric ratio A parameter of the valve current is used to control the secondary oil flow of the pilot;

Control electronic control state: The control hydraulic signals related to the displacement change are the oil flow of the front pump, the oil flow of the rear pump, the pilot oil and the negative flow. The oil flow of the front and rear pumps directly controls the oil pump, and the pilot oil is throttled by the electric proportional valve.