Bidirectional quick-acting high-flow hydraulic power mechanism

Abstract

The invention relates to a bidirectional quick-acting high-flow hydraulic power mechanism. The bidirectional quick-acting high-flow hydraulic power mechanism comprises a hydraulic actuator and a shaft flow distribution valve which are connected with each other, wherein the hydraulic actuator is a hydraulic cylinder with a double-piston structure and comprises a cylinder body, a front piston and a rear piston; the front piston and the rear piston are arranged on a piston rod; the cylinder body comprises a front cylinder barrel and a rear cylinder barrel; the front piston is positioned in the front cylinder barrel and divides the front cylinder barrel into a first working cavity and a second working cavity; the rear piston is positioned in the rear cylinder barrel and divides the rear cylinder barrel into a third working cavity and a fourth working cavity; the shaft flow distribution valve comprises a shaft flow distribution valve body stator and a shaft flow distribution valve element rotor; an oil supply channel and an oil return channel are formed in the shaft flow distribution valve element rotor and are connected with an external pipeline; and the shaft flow distribution valve body stator and the shaft flow distribution valve element rotor are divided into four sealing regions from top to bottom through sealing rings. Compared with the prior art, the bidirectional quick-acting high-flow hydraulic power mechanism has the advantages that hydraulic control logic is simplified, the structure is simple, adjustment is facilitated, quick reciprocating motion of the pistons is facilitated, and the like.

Description

technical field [0001] The invention relates to the technical field of hydraulic power mechanisms, in particular to a two-way fast-acting large-flow hydraulic power mechanism. Background technique [0002] Hydraulic piling hammers are widely used in the foundation construction of prefabricated piles such as bridges, buildings, ports and wharves. Compared with traditional diesel piling hammers, hydraulic piling hammers have the characteristics of high piling efficiency, no exhaust emissions, low noise, etc. Energy, wide adaptability, can be used for underwater piling and inclined pile driving, etc. Pile driving hammers include single-acting hydraulic hammers and double-acting hydraulic hammers. Single-acting hydraulic hammers mean that pile hammers fall freely under the action of their own weight, such as the HH357 series of British BSP and Model 650-3505 hydraulic hammers of American HPSI; The hydraulic hammer, that is, the pile hammer, falls at an acceleration greater than...

AI Technical Summary

Problems solved by technology

The action control of the hydraulic actuator on the existing piling hammer is mostly controlled by a complex hydraulic system, and the action frequency and the stroke control method of the hydraulic cylinder are mostly realized by an additional mechanical restriction method, which has the advantages of large reversing impact and coordinated adjustment Complicated, the hydraulic components involved require a high dynamic response, a large number, and many fault points in the actual use process, etc.

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