An open-chain method for a hydraulic changer

Abstract

The invention relates to a chain opening method for a hydraulic gantry transfer crane. The hydraulic gantry transfer crane comprises bases, mounting bases, oil cylinder assemblies, two-way guide column assemblies, sliding sleeves, lifting shoulder poles and lifting tool assemblies. The chain opening method comprises the steps as follows: 1, arranging redirecting pulleys and fixing rope bases; 2, providing a third traction steel wire rope; 3, when the lifting shoulder poles are used for lifting, separating the third traction steel wire rope from the fixing rope bases, and enabling lifting steel wire ropes of the lifting tool assemblies to be in a free state; 4, when a chain needs to be opened during the non lifting, controlling the rising and the falling of the lifting shoulder poles to enable the third traction steel wire rope to pull the lifting steel wire ropes of the lifting tool assemblies to move towards the sides of the redirecting pulleys, so that the width of the inner headroom is enlarged to be convenient for transportation equipment to pass. For the hydraulic reloading frame adopted by the chain opening method, the structure is simple, and the transfer of beam slices or rail rows can be rapidly realized. Besides, through the adoption of the method disclosed by the invention, locomotives or rail row (beam slice) transportation vehicles can pass conveniently, and the convenience of the hydraulic gantry transfer crane is further improved.

Description

Technical field [0001] The invention relates to a chain opening method for a hydraulic reloading rack. Background technique [0002] With the rapid development of my country's railways, the rapid transportation system of large cities will be connected with the national railway network and cooperate closely to form a unified passenger transportation network. In terms of cargo transportation, centralization, unitization, and heavy-loading of bulk cargo transportation are common trends in the development of railways in various countries. [0003] During the "Twelfth Five-Year Plan" period, my country's rapid railway network (speed above 160km / h) will reach 40,000 km. The bridges of the express railway network all use 2201 or 2101 speed-increasing T-beams. The speed-increasing T-beams are all factory-made, transported by rail and erected on site. After the beams are transported to the site, the inversion of the beams becomes one of the key factors affecting the construction speed of ...

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