RU1789803C - V-belt transmission pulley - Google Patents

Abstract

Usage: in machines for friction welding. SUMMARY OF THE INVENTION: On a shaft 1, an electromagnetic clutch housing 6 is mounted through a spline connection 4 of a sleeve 5. The pulley cup 3 is partially placed on the housing 6 of the electromagnetic clutch. In the pulley cup 3 there is a system of inclined holes 11, 12, a catcher 10 is installed above the latter. 3 sludge.

Description

The invention relates to elements of machines for friction welding and can be used to transmit torque from an electric motor to a spindle.

A known V-belt drive consists of two discs, one of which is mounted on the hub of the second with the possibility of relative axial movement by means of a screw mechanism provided with an adjusting nut. The pulley is equipped with a coupling connecting the nut to the hub of the first disk and ensures their joint axial movement. The coupling is made in the form of two half rings that enter radial protrusions into the annular groove of the nut and are rigidly connected to the hub using fasteners (1).

The disadvantage of this design is its unreliability when transmitting axial forces of lapping, heating, forging during welding of workpieces.

Prototype - a technical solution containing a V-belt drive pulley,

combined with an electromagnetic friction clutch, the shaft being connected through a key to the clutch housing, and the shaft through the friction disks of the clutch and the pulley housing is connected to the pulley (2).

The disadvantage of the prototype is low reliability and low durability, because the design uses liquid lubricant to improve the operation of the pulley and bearings, requiring frequent replacement, and therefore periodic assembly-disassembly of the structure.

The aim of the invention is to increase the reliability and durability.

This goal is achieved by the fact that in a V-belt pulley containing a hub mounted on the shaft, part of which is made in the form of a cup, and an electromagnetic friction clutch inside the latter, inclined holes are made on the end surface of the pulley, the inputs of which are located on one end, the outputs are on the other , and are offset relative to the outputs in the district or in the district and for the LO

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In the opposite direction, radial holes are made on the cup with a direction of the angle of inclination corresponding to the direction of the angle of inclination of the pulley holes, and the gear is equipped with a bowl-shaped catcher located on the side surface of the cup, the outputs of which are located on the pulley and the inlets are facing respectively; located on the glass inclined holes.

The invention is illustrated in the drawing, in which Fig. 1 is a sectional view of a main V-belt transmission; figure 2 is a view And from the side of the coupling; Fig. 3 is a view BB of the inclined hole,

The invention consists of a shaft 1 (spindle), on which a hub 2 is placed, part of which is made in the form of a cup 3, inside of which an electromagnetic friction clutch 6 is installed through a spline connection 4 of the sleeve 5.

In addition, on the shaft 1 there are radial bearings 7 between the labyrinth seal 8, preloaded by the clamping nut 9. On the side surface of the glass 3 there is a bowl-shaped catcher 10. The inclined holes 11 are made on the end surface of the pulley 11. The inputs of the holes 11 are located at one end, and the outputs are on the other end of the pulley. The inputs are offset relative to the outputs in a circumferential or circumferential and radial direction. On the glass 3 there are made radially located inclined holes 12 with a direction of the angle of inclination corresponding to the direction of the angle of inclination of the holes

11 pulleys. The outputs of the inclined holes 11 located on the pulley and the inputs of the inclined holes located on the glass 3

12 facing the inner bottom of the bowl-shaped catcher 10.

The invention works as follows. The pulley rotates constantly synchronously with the drive motor, and the rotation of the shaft 1 (spindle) depends on

whether or not the electromagnetic friction clutch 6 is turned on or off. When the electromagnetic friction clutch 6 is turned on, its disks slip relative to each other, which means strong heating.

To cool them, a system of inclined holes 11 and 12 is provided, over which a bowl-shaped catcher 10 is placed. When the pulley rotates, the air flow from

the inclined openings 11 are guided by the catcher 10 into the inclined openings 12. The doubled aerodynamic air pressure passing through the inclined openings system cools the electromagnetic clutch disks, bearings and pulley belts, which increases the reliability of the system and increases its longevity without disassembling.

Claims (1)

SUMMARY OF THE INVENTION A V-belt drive pulley comprising a hub mounted on a shaft, a part of which is made in the form of a cup, and an electromagnetic friction clutch inside the latter, characterized in that, in order to increase the reliability and durability of the transmission, inclined holes are made on the end surface of the pulley, the inputs of which are located at one end, the outputs are on the other, and are offset from the outputs in the district or circumferential and radial direction, on the glass there are made radially located inclined holes with a direction of the angle of inclination corresponding to the direction of the angle of inclination of the pulley holes, and the transmission is equipped with a bowl-shaped catcher located on the side surface of the glass, the outputs of the located on the pulley and the inputs located on the glass, respectively, are facing inclined holes. 9 -9 SH6Sh Type A fig.Z