A shallow fast pile driver suitable for soft ground

Abstract

The invention discloses a shallow fast pile driver suitable for soft ground, which includes a pile frame, a pile hammer, a toggle mechanism and a lifting device; the toggle mechanism includes a pair of guide rail beams, with a first slide block and a The second slider, the two ends of the guide are respectively provided with side stoppers, tension springs are arranged between the first slider and the second slider and the side stoppers, round holes are opened in the first slider and the second slider , the power output end of the driving motor is equipped with a cam, the cam is located in the circular hole, the first slider is provided with a first toggle arm, and the second slider is provided with a second toggle arm. Compared with the prior art, the present invention is a shallow fast pile driver suitable for soft ground, through the relative movement of the first toggle arm and the second toggle arm, the pile hammer is slightly inclined during the descent process , and when the pile hammer in a slightly inclined state hits the pile body, it will be accompanied by lateral friction, making the pile body slightly expand in the pile hole on the ground, which is conducive to the sinking of the pile body, and is suitable for use in soft ground environments .

Description

technical field [0001] The invention relates to a shallow fast pile driver suitable for soft ground, which belongs to the technical field of construction equipment. Background technique [0002] Pile driving is to squeeze the pile body into the foundation soil by the power impact of the machine tool. The construction pile driver is the infrastructure of modern building construction. supporting base. In the process of driving the pile pipe or prefabricated pile into the ground, it is necessary to overcome the huge soil resistance, so the pile head impact velocity of the pile driver should be as high as possible within a reasonable range. However, during the piling process of the current pile driver, only the acceleration of gravity is used to make the pile head drop freely from high altitude to generate the impact velocity. The impact velocity obtained by this method is very limited. For relatively solid ground, the piling efficiency is very low. Moreover, the speed is slow...

AI Technical Summary

Problems solved by technology

However, during the pile driving process, the current pile driver only uses the acceleration of gravity to make the pile head drop freely from a high altitude to generate the impact velocity. The impact velocity obtained by this method is very limited. For relatively solid ground, the piling efficiency is very low. Moreover, the speed is slow. At the same time, the pile driver is used for a long time, which will cause the pile to wear and tear, which will lead to deflection during pile driving, which is not conducive to improving the construction speed. Moreover, the pile body is subjected to a huge impact force for a long time. , easily damaged or deformed, therefore, in the shallow soft ground piling process, we can use a small impact force to impact the pile to reduce the probability of pile damage

[0003] Using a traditional pile driver and using a small impact force to impact the pile body will inevitably affect the piling efficiency and prolong the piling time. Therefore, how to improve the piling efficiency without increasing the impact force of the pile hammer when piling in shallow layers , is a technical difficulty

Images