Shandong Sitong supplies 8-ton knuckle arm crane with stable quality knuckle arm crane video

3-ton knuckle arm crane_Copy
Main technical parameters of four-ton knuckle arm crane
Model - :r
- :r
Engine model - :r
Quanchai
Lifting speed - :r
/- :r
Chassis model - :r
Maximum lifting capacity (main boom) - :r
- :r
Power - :r
Rotation speed - :r
r/- :r
Dimensions (length*width*height)- :r
3*.*
Maximum lifting height-:r
Main boom:-:r
Travel speed-:r
≦
Main boom+folding arm-:r
- :r
Leg span (vertical*horizontal)- :r
3.*
Folding arm parameters
Folding arm folding angle- :r
- : r
The folding arm is fully extended - :r
When the folding arm is lifting a heavy load - :r
Maximum amplitude - :r
How can we avoid the loss of hydraulic power of the small crane? Please take a look at the following four points:
Considering the diversity of actuator working conditions, sometimes the system requires large flow and low pressure, and sometimes it requires small flow and high pressure. Therefore, it is advisable to choose a pressure-limiting variable pump because the flow rate of this type of pump changes with changes in system pressure. When the system pressure is reduced, the flow rate is relatively large, which can meet the rapid stroke of the actuator. When the system pressure increases, the flow rate decreases accordingly, which can meet the working stroke of the actuator. This can not only meet the working requirements of the actuator, but also make the power consumption more reasonable.
.If the actuator has speed regulation requirements, then when selecting a speed regulation circuit, it must not only meet the speed regulation requirements, but also minimize power loss. Common speed regulating circuits mainly include: throttling speed regulating circuit, volume speed regulating circuit, and volume throttling speed regulating circuit. Among them, the power loss of the throttle speed regulation loop is large and the low speed stability is good. The volumetric speed control loop has neither overflow loss nor throttling loss, and has high efficiency, but poor low-speed stability. If you want to meet the requirements of both aspects at the same time, you can use a volumetric throttling speed regulating circuit composed of a differential pressure variable pump and a throttle valve, and make the pressure difference at both ends of the throttle valve as small as possible to reduce pressure loss.
3. When hydraulic oil flows through various types of hydraulic valves, pressure loss and flow loss are inevitable. This part of the energy loss accounts for a large proportion of the total energy loss. Therefore, rational selection of hydraulics and adjusting the pressure of the pressure valve are also important aspects of reducing power loss. The flow valve is selected according to the flow adjustment range in the system and ensures that its minimum stable flow rate can meet the usage requirements. The pressure of the pressure valve should be as low as possible while satisfying the normal operation of the hydraulic equipment.
.Select hydraulic oil reasonably. When the hydraulic oil flows in the pipeline, it will show viscosity. When the viscosity is too high, it will generate large internal friction, causing the oil to heat up and increasing the resistance when the oil flows. When the viscosity is too low, it is easy to cause leakage and reduce the volumetric efficiency of the system. Therefore, oil with appropriate viscosity and good viscosity-temperature characteristics is generally selected. In addition, when oil flows in the pipeline, there is also pressure loss along the way and local pressure loss. Therefore, when designing the pipeline, try to shorten the pipeline as much as possible and reduce bends.