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Bolt for blade

A technology of bolts and blades, applied in the direction of screws, threaded fasteners, connecting components, etc., can solve the problems of not meeting the requirements of use and great changes in performance

Inactive Publication Date: 2013-08-14
SHANDONG GAOQIANG FASTENER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of traditional blade bolts is good at room temperature, but the performance changes greatly at low temperatures, which cannot meet the requirements for use

Method used

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  • Bolt for blade

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Embodiment Construction

[0009] Such as figure 1 As shown, the present invention is respectively provided with long thread 2 and short thread 3 at the two ends of screw rod 1, and the external diameter of described long thread 2 and short thread 3 is slightly larger than the external diameter of screw rod 1, and long thread 2 and short thread 3 The inner sides of the inner side are respectively provided with conical slopes 4, and the outer ends of the long thread 2 and the short thread 3 are respectively provided with chamfers 5. Through the above settings, the present invention is completed through the atmosphere protection multi-purpose furnace heat treatment, surface dacromet treatment and subsequent treatment, to ensure a number of mechanical performance requirements, especially low temperature impact resistance requirements, so that various performance indicators such as product corrosion resistance can reach the best state. The invention meets the assembly requirements of the blower fan and has...

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Abstract

The invention discloses a bolt for a blade. The bolt is characterized in that long threads and short threads are respectively arranged at two ends of a threaded rod, the outer diameter of each of the long threads and the short threads is slightly larger than that of the threaded rod, conical oblique planes are respectively arranged on the inner side of the long threads and the inner side of the short threads, and chamfers are respectively arranged at the outer end of the long threads and the outer end of the short threads. The bolt for the blade has the advantages that service requirements on the external shape and various performance indexes under the condition that the temperature is minus 40 DEG C are met, installation and service requirements of various generating sets with fans are met, and land and marine service requirements under severe conditions across the world are met.

Description

technical field [0001] The invention relates to a bolt, in particular to a blade bolt used for wind energy generating equipment. Background technique [0002] Blade bolts are an important connecting component of wind power generation equipment. Its performance directly affects the quality of wind turbines. The high cost of wind turbine operation and installation requires that the equipment must have perfect quality, and wind towers with a height of tens of meters or even nearly 100 meters are even more Reliable blade bolts are required. Blade bolts must not only ensure a certain tensile strength, but also have low-temperature impact resistance, corrosion resistance, and good anti-loosening performance. The performance of traditional blade bolts is good at room temperature, but the performance changes greatly at low temperatures, which cannot meet the requirements for use. Contents of the invention [0003] The object of the present invention is to provide a blade bolt wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/04
Inventor 陈永臻董增斌王翠
Owner SHANDONG GAOQIANG FASTENER
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