Turnover type billboard transmission mechanism

Abstract

The invention discloses a turnover type billboard transmission mechanism, which comprises a shell and a transmission main shaft which is transversely arranged in the shell, wherein a plurality of transmission devices for driving a billboard triangular prism to turn over are arranged in the shell at intervals; each transmission device consists of a compression spring seat, a compression spring, a cam, a fixed seat, a transmission rod, a small triangular transmission plate and a large triangular connecting plate; the compression spring seat, the compression spring and the cam are sleeved on the transmission main shaft; the fixed seat is arranged on the shell; the transmission rod is arranged in the fixed seat; the small triangular transmission plate is arranged at the lower end of the transmission rod; the large triangular connecting plate is arranged at the upper end of the transmission rod; the small triangular transmission plate is in transmission connection with the cam; the large triangular connecting plate is fixedly connected with the lower end of the billboard triangular prism; and one end of the compression spring is in elastic contact with the cam, and the other end of the compression spring is in elastic contact with the compression spring seat. The cam can be automatically withdrawn and restored; wear of the transmission mechanism is effectively reduced; load of a motor is reduced; rupture of the lower end of the fixed seat and the transmission main shaft can be avoided; assembly and maintenance are facilitated; and billboard running efficiency can be effectively increased.

Description

technical field [0001] The present invention relates to a device for flipping each prism in a double-sided or triple-sided billboard, more specifically, a transmission for driving a double-sided or triple-sided billboard to flip each prism. mechanism. Background technique [0002] With the development of social economy and the continuous progress of science and technology, the role of advertising is particularly important. Advertising display machinery has also developed from one-sided flip to multi-picture, such as three-sided flip billboards. In the known technology, the transmission device used to drive the multi-faceted billboards to make each prism overturn is composed of a fixed nut and a cam fixed on the transmission shaft in turn, a fixed seat installed on the casing, and a fixed seat installed on the fixed shaft. The transmission rod in the seat is composed of a small triangular transmission plate installed at the lower end of the transmission rod, and a large tria...

AI Technical Summary

Problems solved by technology

In the known technology, the transmission device used to drive the multi-faceted billboards to make each prism overturn is composed of a fixed nut and a cam fixed on the transmission shaft in turn, a fixed seat installed on the casing, and a fixed seat installed on the fixed shaft. The transmission rod in the seat is composed of a small triangular transmission plate installed at the lower end of the transmission rod, and a large triangular connecting plate installed at the upper end of the transmission rod. A spring is installed in the fixed seat, and the spring is sleeved on the transmission rod. The transmission device has the following defects. 1. The cam is positioned by the fixed nut, and the cam cannot move along the transmission main shaft. When the billboard triangular prism connected to the big triangle is blocked and cannot rotate normally, the cam cannot automatically retreat and reset, resulting in the small triangle and The friction between the cams is greatly increased, which often causes accelerated wear of the mechanism, a large heat load of the motor, and the fracture of the lower end of the fixed seat and the drive shaft due to excessive stress

2. It is difficult to adjust the tightness between the fixed nut and the cam. If the pressure is too tight, the friction between the small triangle and the cam will be too large, and the mechanism will wear faster. If the pressure is too loose, it will easily cause slippage and cannot drive the billboard. Triangular Prism Flip

3. It is necessary to adjust the flatness of each billboard triangular prism during installation, which is difficult to adjust

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