Traction driven shearing fork telescopic lifting mechanism

Abstract

A drawing draws drive shear fork expansion and contraction lifting gearing forms from shear fork column, block, alachlor and drawing draw drive gear. It draws by anchoring and controlling the alachlor, which string through each block. It drives the shear fork mechanism expansion and contraction lifting support by changing or limiting the change of the included angle of the shear fork arm by force deliver by the block and alachlor. It can be used in many application and it got many actuation and high power, Part or all shear fork columns can use drawing draw drive during the lift of the association shear fork expansion and contraction lifting gearing, The drawing draw drive can be formed from a group or two of block and alachlor in a same shear fork column. And make the shear fork machinery meet the challenge of each loaded area and load. It is reasonable in strution and is in stable expansion and contraction, support fast and broad in usage. It is simple in structure, save material, light empty weight, easy to make and high efficiency. The invention can be use in all kind of fork lifts, and serves in fields of architectural decoration mount work, lifting hoisting forwarding working machinery, up-down movable pylon and so on.

Description

technical field [0001] The invention relates to an improvement of a scissors mechanism telescopic lifting drive mode. Especially the scissor telescopic lifting mechanism driven by the pull of the cable. Background technique [0002] In the prior art, the scissor mechanism is widely used in production and daily life as a telescopic lifting support, and they are usually driven by a screw or a pneumatic hydraulic cylinder to realize lifting and telescopic changes; Hydraulic cylinder-driven scissor lifts, tables, racks, ladders, etc. have formed many series of products, which are widely used in various facilities or operations such as climbing, lifting, and transportation. Like the Chinese patents "A Self-Control Hydraulic Elevator" 95209483.5, "Shaft Type Hydraulic Lifting Platform" 03229183.8, etc., the innovation is to place the hydraulic cylinder in a different position to push and change the angle of the scissor rod to drive the scissor telescopic lifting support . Howev...

AI Technical Summary

Problems solved by technology

However, although hydraulic cylinders are used to drive the telescopic lift of the scissors row, although the power is powerful and the movements are flexible, it must be from oil pump pressurization, pipeline transportation, high-pressure control to oil cylinder work. The system is complicated, there are many mechanisms, and the parts are precise. circuit and control system, once leakage and other failures will seriously endanger safety, so its protection settings must be particularly comprehensive and complete

At the same time, it is difficult for the hydraulic cylinder to maintain a constant state under heavy load for a long time.

In short, large volume and complex structure, difficult manufacturing and high cost, troublesome maintenance and frequent failures, and many safety limitations are obvious shortcomings of hydraulic cylinder-driven scissors mechanical telescopic lifting support

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