“Pros and Cons of Hydraulic Control”
Pros
-
High force transmission capability
Hydraulic cylinders can generate significant force, making them suitable for lifting heavy loads and exerting high pressure.
-
Easy control for power and speed
Hydraulic systems use highly precise control valves, allowing for fine adjustments of flow and pressure.
This enables precise control of cylinder speed and power.
Cons
-
No-Selflocking Mechanism
Hydraulic and pneumatic cylinders lack self-locking, making them prone to movement under external loads. Locking devices are needed, especially for vertical loads to prevent unintentional lowering.
-
Poor positioning accracy
Hydraulic cylinders, controlled by pressure, struggle with precise positioning. Oil viscosity varies with temperature, causing inconsistent performance and making stable high-accuracy positioning difficult under changing environmental conditions.
-
Low efficiency of hydraulic pumps
Hydraulic pumps operate continuously, leading to higher energy consumption across the entire system.
-
The need for additional components
Hydraulic cylinders require additional components such as pumps, tanks, regulators and piping, leading to more complex systems.
-
Maintenance frequency
Hydraulic cylinders require regular maintenance due to issues such as oil-leaks and deterioration of piping.
| Item | Hydraulic system | Screw jacks |
|---|---|---|
| Initial cost | High | Low |
| Load capacity | High | High |
| Energy consumption due to idling | Yes | No |
| The need for additional devices | Yes （Pumps、tunks、pipes etc） | No |
| Precision of adjustment | Middle | High |
| Self-locking | No | Yes |
| Maintenance frequency | High （oil-leaks、deterioration of pipings ） | Low |
Screw Jacks Can Reduce Factory Power Consumption and Contribute to the SDGs
Energy Saving and Environmental Impact Reduction by Introducing Electric Screw Jacks
Optimizing factory energy use is key to reducing both environmental impact and costs, with power system choice greatly affecting efficiency and the work environment.
| Item | Hydraulic System | Electric Screw Jack |
|---|---|---|
| Energy Efficiency | Requires constant pump operation, consuming electricity even in standby. Excess energy is often lost as heat. | Operates only when needed, significantly reducing power consumption. High energy conversion efficiency. |
| Environmental Impact | Requires oil management and regular replacement. Waste oil disposal and potential oil leakage pose environmental risks. | No oil used, eliminating the risk of oil leakage and environmental contamination. |
| Maintenance | Requires frequent oil replenishment, replacement, and leakage prevention, increasing maintenance workload. | No oil changes required. Greatly reduces maintenance effort. |
| Work Environment | Oil leakage can pollute factory floors, requiring extra cleaning and leading to a poorer work environment. | Enables clean equipment operation and contributes to a cleaner, safer workplace. |
| Implementation Effect | Lower energy efficiency and higher operating costs. | Reduces CO₂ emissions, saves energy, improves environment, and lowers long-term costs. |
| Contribution to SDGs | High environmental impact and less sustainable. | Low environmental burden and high efficiency make it a sustainable solution. |