Hydraulic dynamic and static cooperation pile pressing machine

Abstract

The invention discloses a hydraulic dynamic and static cooperation pile pressing machine, which is the pile pressing machine that is formed by combining a hydraulic ramming machine and a hydraulic static pressing machine to cooperate. A power source and a wheel hammer coaxially rotate, when the wheel hammer rams downwards, the wheel hammer is an eccentric wheel with larger eccentricity, when the wheel hammer rotates upwards, the wheel hammer is automatically changed into a concentric wheel; and in order to prevent the impact power which is generated during the rotation process of the wheel hammer from damaging and influencing a pile pressing oil cylinder, two portals for installing the pile pressing oil cylinder are connected into a whole, the connection with a main case is changed into an elastic connection from the rigid welding in the static pressing machine, so two different inertial systems are formed by the main case and the main case frame. Consequently, the friction force of the peripheral soil of the pile to a pile body is greatly reduced under the vertical vibration of the pile body, most of the dynamic and static forces are exerted on a pile head, the penetrating capability to a rock body is increased, and the penetrating capability to the existing hydraulic hammer is exceeded.

Description

technical field [0001] The present invention relates to construction engineering machinery for building foundation construction, referred to as pile machinery for short, and specifically relates to a pile machinery comprehensive coordination using two different principles of hammering machines (including diesel hammers and hydraulic hammers) and hydraulic static pile drivers. A hydraulic, dynamic and static collaborative pile driver. Background technique [0002] In the concrete prefabricated pile pressure engineering, the pile machinery widely used in my country currently includes hammer pile driver and hydraulic static pile driver. From the comprehensive evaluation of the two national policies of resource conservation and environmental friendliness, the hydraulic hammer pile driver is the best, followed by the static pile driver, and the diesel hammer pile driver is the third. Described below: [0003] (1) Hydraulic hammer pile driver [0004] The hydraulic hammer is c...

AI Technical Summary

Problems solved by technology

[0010] Since the cylinder barrel of the above-mentioned pile-pressing oil cylinder is fixed on the mast, and the hydraulic vibration device is installed at the lower end of the piston rod of the pile-pressing cylinder, the sealing ring in the piston rod and the guide sleeve is constantly vibrating and rubbing against the cylinder barrel and the piston rod during vibration. The sealing ring will be worn repeatedly, the working life will be greatly shortened, and it may even fail to work normally

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