SU1232882A1 - Belt gearing - Google Patents

Description

eleven

The invention relates to mechanical engineering and can be used in all areas of the industry for converting speeds and torques.

The purpose of the invention is to increase safety by eliminating belt slippage due to the mutual balancing of axial forces arising on the sides of the teeth.

Figure 1 shows the transmission, general view; figure 2 is a view of And figure 1; figure 3 - section bb in figure 2.

The transmission contains the leading 1 and the driven 2 pulleys, an endless belt 3 with oblique trapezoidal teeth 4. Each two adjacent teeth form between themselves equal angles of inclination tp, the magnitude of which is chosen from 2-6. A slight inclination of the teeth eliminates the slipping of the belts along those that form on their lateral side, i.e. provides samotormo328822

living The number of teeth on the belt must be even. On the driving and driven pulleys 1 and 2, trapezoid depressions interact, interacting 5 with the trapezoidal teeth on the belt. To ensure that the pitch of the engagement elements is constant, the belt is reinforced with steel wires 5, woven, for example, from thin, high-strength steel brass-plated wire (FIG. 3).

The transmission works as follows.

The load applied to the branches of the belt is distributed along the circumference arc over a number of teeth. Axial forces arising on the sides of the teeth, as a result of small angles of inclination

insignificant, directed in different directions, and therefore mutually balanced, which eliminates the slipping of the belt from the pulleys.

Type A

one

i

five

Bb

1

Compiled by O. Klimov Editor N. Yatsola Tehred I. Popovich Corrector G. Reshetnik

Order 2753/37 Circulation 880 Subscription VNISHI of the USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

FIG. J

Claims (1)

GEAR BELT TRANSMISSION, containing the leading and driven pulleys and the toothed belt covering them, characterized in that, in order to increase the reliability of work by eliminating the slipping of the belt due to the mutual balancing of axial forces arising on the lateral sides of the teeth, adjacent teeth of the belt and each pulley are located each other to a friend at an acute angle not exceeding the sliding friction angle for a pair of materials pulley-belt. 1232882 A1