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Hydraulic buffer When the spring is compressed, it absorbs a very small portion of the energy. When the piston moves, it compresses the liquid inside the hydraulic cylinder. The pressurized hydraulic oil flows from the cylinder through the annular gap between the push rod and the bottom of the piston into the oil storage chamber, where the absorbed impact energy is converted into heat energy, providing a buffering effect.
After the crane runs in reverse, the buffer gradually separates from the stop block, and the spring in the buffer's hydraulic cylinder returns the piston to its original position. At this time, the liquid in the oil storage chamber flows back into the hydraulic cylinder, and the撞头 (impact head) is also pushed back to its original position by the spring. The hydraulic buffer can absorb large impact energy, and its stroke can be made short, so its size is also relatively small.
The hydraulic buffer can absorb large impact energy, and its stroke can be made short, so its size is also relatively small. The biggest advantage of the hydraulic buffer is that it has no rebound effect, so it operates smoothly and reliably. The exhaust buffer includes a bladder, an interface, and an outlet. The bladder is made of elastic rubber material, and the shape from the bladder to the outlet is tapered from large to small. The extension direction of the outlet forms an angle of about 90 degrees with the bladder. The interface is provided with a protruding edge. With the above structure, the interface can be conveniently fitted onto the heating exhaust valve at any time. The buffer bladder can buffer the gushing water and collect it without leakage from the outlet, thereby ensuring heating quality and avoiding affecting environmental hygiene.
Polyurethane buffer is a protective device required for elevators, cranes, tower cranes, loaders, weighing instruments, railway machinery, and mine cars at their travel limit positions or during collisions. It can quickly convert impact kinetic energy into elastic potential energy. It has characteristics such as high hardness, good elasticity, large capacity, fast recovery, no noise during collision, resistance to high and low temperatures, and anti-aging properties. It also has certain corrosion resistance to oils, dilute acids, and dilute alkalis. It has a simple structure, small size, light weight, easy installation, and requires no maintenance or repair. It can replace hydraulic buffers in non-high-temperature occasions.
Below, we will tell you the precautions for storing hydraulic buffers:
1. The hydraulic buffer needs to be installed horizontally and must not be tilted;
2. The working temperature of the hydraulic buffer needs to be within a certain range, 22—80 degrees Celsius;
3. To avoid hydraulic oil overflowing, do not invert the hydraulic buffer;
4. The hydraulic buffer should be placed in a ventilated area, and the humidity should not be too high;
5. Do not place the hydraulic buffer near fire sources, and pay attention to fire prevention.
For elevators, the hydraulic buffer is a * safety device; otherwise, the rapid stopping and starting of the equipment will inevitably have a significant safety impact on the equipment and passengers.
The hydraulic buffer inside the elevator must be equipped with a support base with a height of at least 0.5M. Its average deceleration should not be greater than 1g, and the duration of deceleration above 25g should not exceed 0.04s. Otherwise, excessive impact can cause harm to the human body.
The hydraulic buffer on trains is used on the coupler. The buffering effect of trains is the same as that of elevators, also to improve passenger comfort and safety. The performance requirement for the hydraulic buffer is naturally that when the train stops, the human body should not feel much impact. For example, when the impact speed is 7km/h, the maximum force of the hydraulic buffer should be 600kN, and the maximum stroke should be 58mm.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
