Dynapac paver spiral cloth stop suddenly cause analysis       

For concrete pavement paving, a SD2550 CS Dynapac multifunctional paver spiral cloth suddenly stopped, and a metal friction sound strong, the left and right screw oil pressure gauge instructions are zero, the other system is working properly.

Dynapac paver spiral cloth stop suddenly causes:

1, circuit

2. Mechanical transmission system

3. Hydraulic system

Dynapac paver spiral cloth stop suddenly causes a detailed analysis:

1, according to the sudden stop when there is a strong gold chip friction sound to analyze, you can exclude the reasons for the circuit

2, from the mechanical drive system has a power source of screw pump and screw the hydraulic motor output two. Paver spiral distributor pump is through shaft on contact, this system consists of 3 pump up, left and right l screw pump screw pump 2, left potential shift controller 8 and the right 4 potential shift controller and other components.

3, if the screw pump has no power source, it certainly does not turn. The spiral cloth spreading machine screw hydraulic motor has two power output lines, namely power output left screw hydraulic motor power output and the right spiral distributor of hydraulic motor.

4, according to the experience, the possibility of damage to the two lines at the same time is very small, so we can initially determine the screw distributor hydraulic motor power output is no problem

Hydraulic principle figure 5, from the paver spiral distributor, left screw pump and left screw hydraulic motor, the right screw pump and right screw hydraulic motors respectively form a hydraulic circuit that two hydraulic circuit failure at the same time possible cloth spiral to stop is most likely due to a part of the damage caused by the insufficient oil pressure, the left and right screw pump idling, resulting in the left and right spiral cloth stop.

6, so can spread machine screw pump in the mouth with a pool of measuring pressure gauge, and start the engine, when the engine speed reaches 2500r/min, found that the spiral distributor pump output pressure, but significantly lower than the normal working pressure, so we can determine the source of the paver spiral distributor pump is normal when, in the hydraulic system of the screw.