A structurally improved constant force spring support and hanger

Abstract

The invention discloses a structure-improved type constant-force spring hanger which comprises a load output shaft, a first sawtooth bearing, a second sawtooth bearing, a main shaft, a load output bearing, a first rotary frame vertical plate, a second rotary frame vertical plate and a fixing device. The side face of the first rotary frame vertical plate and the side face of the second rotary frame vertical plate are provided with rectangular grooves respectively. The two inner side walls of each rectangular groove are of a rack structure. The end of the first sawtooth bearing and the end of the second sawtooth bearing are each of a rectangular structure. The two side faces of each rectangular structure are provided with saw teeth matched with the rack structures. The rectangular structure of the end of the first sawtooth bearing is embedded into the rectangular groove in the side face of the first rotary frame vertical plate. The rectangular structure of the end of the second sawtooth bearing is embedded into the rectangular groove in the side face of the second rotary frame vertical plate. The structure-improved type constant-force spring hanger is large in load adjustment range, not prone to clamping, and convenient to disassemble and replace.

Description

technical field [0001] The invention relates to a spring support and hanger, in particular to a structure-improved constant force spring support and hanger. Background technique [0002] At present, the lever-type constant force spring hanger widely used in the domestic electric power and petrochemical industry is manufactured according to the "Constant Force Spring Support" JB / T 8130.1-1999 standard. Its shortcomings are as follows: 1) The output load adjustment range is small ( Through the load bolt adjustment ±10%), the load adjustment bolts will not be able to be adjusted due to corrosion when the outdoor layout is arranged, and even breakage will occur when the adjustment is forced; The board is stuck and the rotation is not smooth, resulting in the bending or even breaking of the threaded hanger connected to the load output shaft. This phenomenon is particularly prominent in the constant force spring support hanger arranged in the open air (especially in coastal power ...

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Problems solved by technology

[0002] At present, the lever-type constant force spring hanger widely used in the domestic electric power and petrochemical industry is manufactured according to the "Constant Force Spring Support" JB / T 8130.1-1999 standard. Its shortcomings are as follows: 1) The output load adjustment range is small ( Through the load bolt adjustment ±10%), the load adjustment bolts will not be able to be adjusted due to corrosion when the outdoor layout is arranged, and even breakage will occur when the adjustment is forced; The board is stuck and the rotation is not smooth, resulting in the bending or even breaking of the threaded hanger connected to the load output shaft. This phenomenon is particularly prominent in the constant force spring support hanger arranged in the open air (especially in coastal power plants or petrochemical plants). And the load output shafts fixed in the vertical plates on both sides of the slewing frame cannot be disassembled and replaced at the work site due to the overall processing and one-time assembly in production

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