The basic principle of Engineering Construction: the vibratory pile driver and extractor uses its high frequency vibration to vibrate the pile body at high speed, and sends the vertical vibration caused by mechanical equipment to the pile body. As a result, the soil structure around the pile body changes greatly due to the vibration, and the compressive strength is reduced. The soil around the pile body of the hydraulic pile driver manufacturer vaporizes, thus reducing the friction between the pile body and farmland, Then the pile is driven into the soil by vibration and the weight of the pile body. When pulling out the pile, the pile body is pulled up under the condition of high frequency vibration. If the vibration driving pile meets the hard soil layer and moves down too slowly, the back arm can be used to move down or lift the pile body 0.6-1.2 m long, and then it can be quickly driven down again. The excitation force required by the foundation piling machinery and equipment should be based on the soil layer and soil layer, The moisture content and the type and structure of the pile are clear. Generally, 150-350kn vibration method is adopted to drive the pile with high efficiency. The key points are U-shaped steel sheet pile, I-shaped steel sheet pile, Larsen pile, steel pipe pile and precast concrete pile with a length of 12m. This kind of pile driving method works in sandy soil, and its actual effect is weak in clay soil. At this time, the more powerful model of our factory is adopted when necessary, The technological process of pile sinking by vibration method is: pile lifting__ Check__ Flatness__ Learn to put down the pile driver to make it slowly sink into the soil. The depth must be 1. (if necessary, install the pile cap)___ Check pile position and center line__ Pile driving by vibration to design depth 1__ Move the piling machine to the next pile and work again
Clay soil layer:
For the clay soil layer, the vibration effect destroys the original soil layer structure, changes the relative density of sand and reduces the cohesive force. With the increase of sensitivity, the friction resistance around the pile will increase. Therefore, it is necessary to apply the second stage acceleration or adopt the larger model of our factory
Sandy soil layer:
In view of the fusion and destruction of sand particles caused by the vibration of sandy soil layer, resulting in vaporization, the friction resistance of sand and pile around the pile is reduced, which is conducive to pile sinking. However, for high-density sandy soil layer and loose sand layer, the actual effect of vibration will be weakened due to soil characteristics. Therefore, different vibration output should be used
The technological process of pile driving is as follows: 1. Pile lifting; 2. Inspection; 3. Vertical; 5. Learn to put down the pile driver to make it slowly sink into the soil; 1. (if necessary, install the pile cap); 4. Check the pile position and center line; 6. Vibrate the pile to the depth of the design scheme; 111. Move the pile driver to the next pile to work again
The results show that: 1. The hydraulic drill driver can rotate 190 degrees up and down, which is convenient to use; 2. It can be connected with the excavator as a whole;
3. It can be used in all kinds of work, on the spot, in rainy days, on the river, underwater operation; 4, can drive, pull steel piles, cement piles, rail columns, stainless steel plate, H plate, drainage pipe belt; 5, with French genuine oil motor drive (rotary motor and vibration motor), light weight, very light, but can output high driving power and revolution, sales price, durable; 6. The design scheme of fuel pipe makes the pile sticking and vibration go on smoothly. It can improve the efficiency of pile driving and pile pulling. It has stronger maintenance of the software of the main oil system of the excavator. The safety device of the new design scheme can make the collet fully grasp when the vibration is working, without loosening the pile plate, with high safety and efficiency;
7. The cylinder wooden rolling bearing imported from Japan is selected, with low noise, high speed and high reliability, and the bare machine quality is better;
8. When driving and pulling piles, the speed and vibration frequency can be adjusted, and the requirements of different office environment should be considered;
9. Reliability design of equipment, maintenance of both sides of the pile is not easy to damage, working close to the building is not easy to damage the building itself;
12. The shock absorber of famous brand is selected to reduce the vibration noise, which is more in line with the environmental protection regulations and improves the long-term reliability of the equipment.
Note: for underwater operation, more exhaust pipes should be added.
Add： Western industrial Park, Dongtai City, Jiangsu Province
HOT LINE：+86 13661556708