Industry News

In the hydraulic system of a concrete pump truck, the outrigger and arm system have certain particularities. For safety reasons, each vertical outrigger cylinder and each boom cylinder are equipped with a balance valve (commonly known as "hydraulic lock"). Only when the reversing valve is opened will the balance valve connect to the oil circuit. Otherwise, the balance valve remains closed, isolating the hydraulic oil inside and outside the cylinder.

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.

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,

We drive a pump truck, how can we avoid getting cement stains on the truck? Moreover, after the pump truck has been driven for a long time, rust inhibitors, iron filings, rust spots, and dust and impurities will often remain on the mechanical equipment. In order to prolong the service life of the mechanical equipment, it is necessary to clean the pump truck in time.

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

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?

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.

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.

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:

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.

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;

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.

Concrete pumps are relatively commonly used mechanical equipment nowadays. When purchasing concrete pumps, not only the scale of the manufacturer and product quality must be considered, but also some professional knowledge of the products must be considered.

Concrete mixer pumps are used frequently in the construction process of construction projects and play an important role in construction. From the content of concrete equipment construction operation, the level of its operation is directly related to the quality and safety of construction projects.