Pre-tightening device

Abstract

The invention relates to photovoltaic cleaning equipment, and discloses a pre-tightening device. The pre-tightening device comprises a guide rail, an adjusting base, a mounting base, a pulley, a rebounding part, a ruler and a pointer, wherein the adjusting base is slidably arranged on the guide rail, and is used for being locked and fixed with the adjusting base when sliding to a preset position;the mounting base is slidably arranged on the adjusting base, the pulley is rotatably arranged on the mounting base, and is used for being bypassed by a traction rope connected with a cleaning device,the rebounding part is arranged on the adjusting base, the ruler is arranged on the adjusting base in a sliding direction parallel to the mounting base, and comprises a tensioning upper limit and antensioning lower limit, the tensioning upper limit faces a head end of the rebounding part, and the tensioning lower limit is opposite to the tensioning upper limit; and the pointer is arranged on themounting base and is used for pointing to the ruler and marking the position of a sliding wheel. Compared with the prior art, the tightness change of the traction rope can be directly observed, so that the tightness of the traction rope can be adjusted accurately, and the cleaning device can better clean a photovoltaic panel.

Description

technical field [0001] The invention relates to photovoltaic cleaning equipment, in particular to a pretensioning device. Background technique [0002] When cleaning the photovoltaic panel, the photovoltaic panel cleaning device bypasses the sliding wheel through the traction rope, and then pulls the cleaning equipment to clean the photovoltaic panel. In long-term use, due to changes in the temperature of the external environment, or the long-term stretching deformation of the traction rope, the traction rope becomes loose or tight. When the traction rope becomes loose, it cannot closely cooperate with the sliding wheel, and slips between the traction rope and the sliding wheel, and the traction rope cannot drive the cleaning device to the working position. Equally, the traction rope becomes tight, and is fastened on the pulley, so that the traction rope cannot be pulled, affecting the cleaning device being driven by the traction rope. [0003] In the existing device, in o...

AI Technical Summary

Problems solved by technology

However, the inventor found that in actual use, the operator cannot intuitively judge the tightness of the traction rope, and often after the cleaning device has been used for a period of time, it is found that the cleaning device cannot achieve the required cleaning effect, and the tightness of the traction rope Adjustment, and the adjustment of the tightness of the traction rope is also an estimated adjustment, which cannot be adjusted accurately

As a result, when the traction rope becomes tight or loose, it cannot be observed intuitively, and the tightness of the traction rope cannot be accurately adjusted, which will affect the cleaning device driven by the traction rope to clean the photovoltaic panel

Images