RU1827470C - Chain transmission - Google Patents

Abstract

Usage: mechanical engineering. SUMMARY OF THE INVENTION: the teeth of one sprocket crown are offset in the circumferential direction relative to the teeth of the other sprocket crown. Multiple special ones interact with asterisks, the rollers of adjacent rows of which are displaced along the length relative to each other by at least one plate. 4 ill.

Description

The invention relates to mechanical engineering and can be used in drives containing chain transmissions.

The purpose of the invention is to increase the transmission load capacity by increasing the sprocket and chain pitch without increasing the ripple level.

In FIG. 1 is a circuit diagram; on fit. 2 asterisk; in FIG. 3 is a diagram of a chain transmission (fragment); in FIG. 4 is a gearing diagram.

The chain transmission contains sprockets 1, chain 2, consisting of several rows and having rollers 3, displaced along the chain length, plates 4 and 5. articulated by finger 6. The geometric axes of roller 3 and finger 6 are the same, i.e. e. the axis of the finger lies on the continuation of the axis of the roller.

The sum of the interaxal distances of the plates 4 and 5 is equal to the pitch of the chain P in a straight section. In accordance with the pitch of the chain P, the calculated values of the sprocket pitch Pg1 and the sprocket pitch Pg2 are set depending on their diameters and number of teeth. The amount of displacement S is determined depending on the number of rows in the chain, or, accordingly, the number of sprocket crowns.

The sprockets can have crowns made in one piece with the corresponding tooth displacement, or prefabricated, individual crowns of which are mounted with the corresponding one. angular displacement, providing the necessary mutual displacement of the teeth of the crowns.

Instead of the multi-row chains described above, separate standard single-row chains may be used.

The application of the proposed chain transmission gives the following advantages: increased uniformity, smoothness; noise reduction; reduction of shock, dynamic loads; reduction of vibrations of the chain branches, which allows to increase linear speeds; reduction of requirements for the material and heat treatment of sprockets and chain elements: reduction of transmission dimensions by reducing the number of teeth of the drive sprocket, which is possible in connection with a decrease in dynamic loads; the possibility of increasing the gear ratio

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gears by increasing the number of teeth of the driven sprocket, which is possible due to reduced wear; more uniform load distribution; it is possible to increase chain speed and angular velocity of sprockets.

The application of the proposed chain transmission ensures the achievement of the goal.

Claims (1)

SUMMARY OF THE INVENTION A chain transmission comprising multi-crown sprockets and a multiple chain spanning them, consisting of plates and rollers connecting them to interact with teeth of sprocket crowns, characterized in that, in order to increase load capacity by increasing sprocket pitch and chains without increasing the level of pulsations, the tooth of one crown of stars displaced in the circumferential direction relative to the teeth of the other sprocket crown, the rollers of adjacent chain rows are displaced along the chain length by at least one plate relative to each other, the step from each chain row in a straight section is equal to the sum of the interaxal distances of two adjacent plates, and the plates corresponding rows of chains between adjacent rollers are pivotally connected by means of a pin located coaxially with the roller of an adjacent chain row. i FIG. 3 Figs Ј Fig 2. oe-}