Constant force support lifting frame for support lifting of thermal power pipelines

Abstract

The invention provides a constant force support lifting frame for support lifting of thermal power pipelines. A main spring is mounted on a load pipe and fixed through a main spring pressure plate, auxiliary springs are mounted on two inner sides of an outer framework, two knife-shaped guide rails are mounted on the outer framework through a rotating shaft, the auxiliary springs on the two sides are connected with the knife-shaped guide rails through auxiliary spring pressure plates, and two groups of rollers are connected with the knife-shaped guide rails; the rollers move up and down and press the main spring when the load pipe is stressed by external force; and in different movement positions, swinging of the knife-shaped guide rails enable the auxiliary springs on the two sides to be compressed or stretched, the resultant force in the vertical direction is changed linearly and expresses the characteristic of being same with or opposite to the direction of the main spring force, and the force L output by the load pipe keeps constant during the whole movement process. The constant force support lifting frame has the advantages that the force balance principle design is adopted, the structural technology is simple and reasonable, friction pairs are less, the constant force support lifting frame is convenient to use, mount and maintain, the constancy is smaller than 4%, the load can exceed 200 KN greatly, the combination can be realized, and the precision can completely meet requirements of large-capability and high-performance equipment.

Description

Technical field [0001] The invention relates to a constant-force support and hanger used for supporting and hoisting thermal pipelines in power plants, petrochemical plants, steel plants and the like, and belongs to the technical field of pipeline support and hoisting. Background technique [0002] With the rapid development of the national economy, the demand for electricity, petrochemical products, steel, etc. is showing a trend that is higher than the economic growth rate. For a considerable period of time, the construction of the power, petrochemical and steel industries will continue to maintain a relatively high growth rate; A common feature of these industries is the need to use a large number of thermal pipelines, and in many occasions, in order to avoid the reaction force generated by thermal displacement during the operation of the equipment, it is necessary to use constant force equipment to suspend or support it, so as to achieve heat generation. During displacement, ...

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Problems solved by technology

At present, the constant force supports and hangers used in my country mainly refer to the American ITT. The degree is generally greater than 6%, which cannot meet the performance requirements of this occasion

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