RU1787726C - Conveyer travelling head - Google Patents

Abstract

Application: for using this roller as a drive roller, in a conveyor for welding sheet material. SUMMARY OF THE INVENTION: the drive roller is provided with an auxiliary drum 2 mounted for radial movement in the working drum, regulated by weights, power bodies for moving goods and a shaft-cover having a centrifugal hole and channels for supplying the working medium to the power bodies. 2 ill.

Description

The invention relates to the field of conveyor engineering and can be used as a drive roller in a conveyor for welding sheet material of various techniques. A conveyor drive roller is known, comprising a motor, a gearbox and a drum drum, rotatably mounted in the housing on axles.

This design has a number of significant disadvantages, such as:

the presence of the gearbox increases noise and vibration during operation;

the inability to control the speed; 4

heavy weight of the roller, heating of the gears, the need to ensure their lubrication during operation.

These drawbacks are due to the fact that the induction motors used have a rotational speed of the order of 1500 rpm, and the drive roller has to make several tens of revolutions per minute. This requires a mechanism to reduce the number of revolutions of the drive motor.

In addition, when welding metal strips to obtain a high-quality weld, smooth motion is required with the ability to control the speed of the drive roller depending on the thickness of the sheet.

The purpose of the invention is the ability to control the rotational speed to ensure smooth operation.

This goal is achieved in that the conveyor drive roller is provided with an auxiliary drum and a speed control mechanism.

Figure 1 presents the drive roller of the conveyor,. general form; figure 2 is an auxiliary drum, a longitudinal section.

The roller comprises a working drum 1. an auxiliary drum 2 mounted coaxially for rotation on the frame 3. The working and auxiliary drums are rigidly interconnected. The auxiliary drum 2 consists of a stator (which is a drum 2), in which

N

x |

41

Yu

about

bearings 4 rotatably mounted on the axis of the squirrel-cage rotor 5. The stator (drum 2) has a magnetic circuit in the form of windings b electrically connected to the collector (not shown in Fig.). The axis of orientation of the rotor 5 is provided with a cover 7 and a shaft-cover 8. Radial holes are made in the drum 2, in which there are mounted organs 9, for example, in the form of force holders, at the ends of the rods of which are closed 10. The wing 8 has center hole 11

 for supplying a working medium in the cavity of the power organs 9. through channels 12 ...

As power organs 9, pneumatic and hydraulic oscillators of discrete action, electromagnets, and other displacement drives can be used.

To protect the movement of goods, cheeks 13 can be made rigidly fixed to p, me 3. .-....

The device operates as follows.

. . When voltage is applied to the windings 6, a rotating magnetic field is created which causes the rotor 5 and the drum 2 (stator) to rotate in opposite directions. This rotates and the working drum 1 ... ,.

It is known:

MDVig. M.s + -,

Qt

where is mdwig. - useful moment on the engine shaft,. . . . . .

Ms moment of resistance in bearings, friction, etc.,

I - moment of inertia, -.-. W-angle speed

t is time. ..- ..

When the moment of inertia changes, the angular velocity and the moment on the motor shaft change.

Depending on the ratio of the moments of inertia of the working 1 and auxiliary

2 drums a certain ratio of frequencies of their rotation is established. If it is necessary to regulate this ratio, a working fluid (oil) is supplied from the hydraulic system (not shown) to the hole 11, which through channels 12 enters the stock cavities of the cylinders radially extending the loads 10. The torque changes (increases). the inertia of the drums 1 and 2, a redistribution occurs, respectively. the rotational speed of the drum and rotor. As a result, the working drum 1 starts to rotate more slowly, -,. . Using the invention allows to obtain a positive quality effect:

lack of noise and vibration during the work. .

the ability to control the speed

the ability to create ultra-low speeds,

If necessary, weights can be made in the form of extendable or rising vanes interacting. with. by air ...

Claims (1)

Formula and clause 5 of the resolution - A conveyor drive roller comprising both a working drum and a drive of its rotation, characterized in that, in order to control the rotation frequency to ensure smoothness, the drum rotation drive is made in the form of a coaxially fixed a working drum of a hollow auxiliary drum with radial holes and a magnetic circuit and mounted in the cavity of the auxiliary drum with the possibility of free rotation axles with a rotor, with adjustable weights being installed in radial holes to form a container, and a channel for supplying a working medium to the container is made in the auxiliary drum