Heliostat pitch angle transmission gear

Abstract

The invention discloses a heliostat pitch angle transmission gear. The heliostat pitch angle transmission gear comprises a case body, a worm and gear mechanism, a drive motor and an output shaft, wherein the case body comprises a lower case body assembly and an upper case body assembly which are assembled together; the worm and gear mechanism is arranged in the case body, and a worm wheel assembly of the worm and gear mechanism is coaxially connected with an output gear shaft; the drive motor is connected with a worm shaft of the worm and gear mechanism through a reduction gear; and the output shaft is supported on the case body, the two ends of the output shaft are respectively provided with an output flange which is positioned outside the case body, the output shaft is provided with an output gear which is meshed with a gear of the output gear shaft, and the diameter of the output gear is larger than the diameter of the gear of the output gear shaft. The output level of the heliostat pitch angle transmission gear is a parallel gear pair which has low rotating speed, the heating expansion amount of the gear is small and can be ignored, the backlash of the gear pair is controlled to be the tens of micron level by teeth, accordingly, the return different of the whole transmission gear is controlled, and higher mechanical efficiency is obtained.

Description

technical field [0001] The invention relates to the technical field of solar tower power generation systems, and more specifically, to a heliostat pitch angle transmission device. Background technique [0002] The application of solar tower power generation is a tower system, which is also called a centralized system. It is equipped with many large solar reflectors on a large area, usually called heliostats, each equipped with a tracking mechanism to accurately reflect sunlight to a receiver on the top of a high tower. The light-gathering magnification on the receiver can exceed 1000 times. Here, the absorbed solar light energy is converted into heat energy, and then the heat energy is transferred to the fluid working fluid in the receiver pipeline. The type of working fluid can be: water, heat transfer oil, molten salt, air, etc. [0003] The working fluid takes water as an example. When the water is heated to several hundred degrees, it is sent to a high-temperature stor...

AI Technical Summary

Problems solved by technology

At present, there are the following solutions at home and abroad: "Multi-stage planetary reduction components + worm gear pair + worm gear anti-backlash mechanism". Large, affecting positioning accuracy

[0006] In addition, the complex structure of the worm gear anti-backlash mechanism reduces the efficiency of the system, and the simple structure of the spring-type worm gear anti-backlash mechanism will cause fatigue failure after repeated use and poor durability

[0007] Therefore, how to avoid the problems that the worm gear and worm pair as the output stage bring about larger volume, greater force, greater wear and tear during long-term operation, and affect positioning accuracy has become a technical problem to be solved urgently by those skilled in the art.

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