A portable hydraulic steel bar craft making construction bending device

Abstract

The invention provides a portal hydraulic construction bending device used in rebar technical production. The portal hydraulic construction bending device comprises an operation handle, a four-connection-rod transmission device, a hydraulic transmission system, a rebar fixing device and a bending mechanism; the operation handle is connected with the four-connection-rod transmission device which comprises a connection rod I, a connection rod II and a depressurizing valve piston rod connected into a depressurizing valve; the operation handle is provided with two hinged points, namely the hinged point I and the hinged point II, for connection; the hinged point I is hinged to the depressurizing valve piston rod; the connection rod II is hinged to the position of the hinged point II; the connection rod I and the connection rod II are connected in a hinged manner; the connection rod II is fixed to the outer wall of the depressurizing valve; and the depressurizing valve is perpendicularly connected to the hydraulic transmission system. The hydraulic bending device can perform gradual bending after slowly and uniformly applying pressure to the local portion of a rebar; and it can be guaranteed that the geometrical diameter size of the outer surface of the bent position is free of deformation, and the bent position is free of bending trace and cracks.

Description

technical field [0001] The invention relates to a portable hydraulic steel bar craft making construction bender, which belongs to the technical field of machinery. Background technique [0002] During the "Eleventh Five-Year Plan" period, the State Grid Corporation of China put into operation the UHV AC and DC high-level construction project, and made major breakthroughs in the development of key technologies and equipment for the power grid. Under the background of deepening the research and application of standard technology, paying close attention to the basic work of project quality management, and ensuring the continuous improvement of project quality management level and physical quality level, according to the "State Grid Corporation Power Transmission and Transformation Engineering Standard Technology (3) Process Standard Library (2012 Edition ) in the grounding project (0202020000) in the grounding downconductor installation (0202020101) standard requirements for pr...

AI Technical Summary

Problems solved by technology

In the absence of special tools, it is generally bent after oxygen welding and hammering with a hammer. The grounding down conductor is usually treated with hot-dip galvanizing and anti-rust technology. Affect the service life, in the fire roasting and percussion bending, the control of different angles of each part can not meet the accuracy requirements, there are defects that the grounding down conductor is not attached and the iron tower and the foundation are not tightly combined, and the sensory process is not beautiful. The line is prone to defects such as hammering marks and breakage at the bend

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