Solar heliostat driving device

Abstract

The invention relates to a solar heliostat driving device which comprises a driving box body and a driving box pedestal, wherein the driving box body is coaxially installed on the driving box pedestal, the driving box body is installed on the driving box pedestal through a box body connecting shaft and a thrust bearing, an azimuth driving system is installed on the driving box pedestal, and a pitching driving system is installed on the driving box body. The invention has small tooth side gap of a driving gear, high driving precision, large bearing capacity, light weight and convenient installation, adjustment and maintenance, the tooth side gap can be adjusted at any moment in the installation and use processes according to the tooth side gap size of the gear, and the tooth side gap of the gear can be adjusted to be below 0.1mm and theoretically can reach a zero side gap. Calculated according to the gear diameter of 400mm, a tracking error is below 0.5mrad, the minimum tooth side gap of the output gear of a general heliostat driving device is above 0.2mm, the tracking error is above 1.0mrad, and the tracking precision is improved by more than one time than that of an ordinary driving device.

Description

technical field [0001] The invention belongs to the field of solar power generation, and relates to a heliostat, in particular to a solar heliostat transmission device. Background technique [0002] At present, solar energy is being used more and more widely as a clean and renewable energy source. The heliostat in the solar thermal power generation system is mainly used to track and receive sunlight and focus and reflect it into the heat collector. The heliostat is driven by the heliostat transmission to achieve horizontal and vertical rotation. The structure of the existing heliostat transmission device mainly has two types: (1) It is realized by gear transmission / common worm gear transmission. The existing problem is: when using gear transmission or common worm gear transmission, the backlash depends on Processing accuracy, due to the large backlash of the tooth side and cannot be adjusted during use, the tracking error of this structure is relatively large; (2) It is rea...

AI Technical Summary

Problems solved by technology

The structure of the existing heliostat transmission device mainly has two types: (1) It is realized by gear transmission / common worm gear transmission. The existing problem is: when using gear transmission or common worm gear transmission, the backlash depends on Processing accuracy, due to the large backlash of the tooth side and cannot be adjusted during use, the tracking error of this structure is relatively large; (2) It is realized by ball screw transmission, and the existing problem is: the rigidity of the ball screw transmission Poor, bulky and expensive

[0004] The upper and lower boxes of the invention patent application are connected by the lower worm gear shaft and the spline groove in the center of the upper box. The transmission system adopts ordinary worm gear transmission, which has low transmission efficiency and complicated structure; Machining accuracy guaranteed, tracking accuracy is not high

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