DE10350268B3 - Traction mechanism bearing for flexible fixing of rotating cylindrical machine parts surrounds a drum with the upper end of a continuous traction mechanism - Google Patents

Abstract

Traction mechanism bearing for flexible fixing of rotating cylindrical machine parts, especially of unstable drums such as mixers, driers, composting drums, etc., surrounds a drum (1), which can be a bearing journal or a traction mechanism roller, with the upper end (O) of a continuous traction mechanism (7), which is attached in the bearing housing (4) to deviating rollers (8-10) and a tensioning roller (15). Independent claims are also included for alternative traction mechanism bearings. Preferred Features: The upper end of the continuous traction mechanism is supported by support wheels in the region of the angle of belt contact with the drum.

Description

The Invention relates to a Zugmittellager for the attachment of rotating, cylindrical machine parts, especially of long and unstable drums such as mixers, dryers, composting drums or the like, which are taken in coercion with the traction means to store them or at the same time store and drive.

It It is known that drums to rotate, stored like waves Need to become. Because of their big ones Diameter and tolerances for welded Parts, storage is based mostly on other principles such as the storage of the waves.

Outside the drum, in the immediate vicinity the faces, There are two tires or annular flanges, the two roller rails form, with pairs of rollers on which the drum rolls, engage. The two rollers are in suitable, on the ground rotatable bearings. The rotation of the drum is by a geared motor produced, which is fixed to the ground and with an output pinion is provided, on which a chain is carried. The necklace will too led around a cog, that on the outside the drum is attached, creating an arrangement in a closed Chain is formed.

stiffness and short drums, like tube mill, the have round neck from both sides are with plain bearings over the Neck taken.

A drum that is hung in rows of endless chains with sprockets in the DE 340 025 C described in more detail. The chains are used both for storage and the drive.

A suspended on ropes rotating drum is in the American patent US 4354799 presented. The drum is positioned by its weight.

A drum, which hangs on the upper Trumm and has Aufspannorgane for adjustment of the horizontal position, is in the DE 27 06 902 A1 described in more detail.

There is also a British patent GB 773,398 in which rotating and oscillating rollers are suspended elastically on chains.

difficulties Occur when a traction device is overstressed or the thin-walled drum shell deformed by the burden of the round shape.

thin-walled and long drums are unstable, they need to be in more than two points be stored and driven.

Drums, those on support rollers They need precise and very robust roller rails on their mantle as careers for Supporting roles. Bearings require high precision and complicated cooling and thrusting of trunnion pins Lubrication systems.

The Bearing load of the rotating drum is of the drum contents decisively dependent. Of the moving content of the drum requires very stable base, because any deviation of the drum position adversely affects the drum drive effect. Drums with stiff drum bearings are only allowed in two points their length be attached.

Of the Invention has for its object to propose a Zugmittellager which is suitable, long and thin-walled with usual Run deviations manufactured drums multiple times to store their length or at the same time to store and drive, the traction means does not have to absorb the entire weight and the drum walls form-fitting supported become.

This object is achieved by the invention in that the Zugmittellager with an endless traction means which is mounted in a frame of deflection pulleys or pulleys, the drum, which is considered as a journal or a pulley, with upper run, wherein the endless traction means ( 7 ) at the upper run (O) in the region of the drum wrap angle (β) with support wheels ( 10 ) is supported.

The Zugmittellager is a flexible bearing for running deviations around the axis the rotating drum.

When Traction means can Tension elements for friction or positive locking flexible drives be used.

When friction Traction means is for example a flat belt, steel belt or V-belt in question. For positive Traction means, for example, a link chain or a toothed belt can be selected.

The Zugmittellager with free running traction stored the drum. If the traction means is attached to driven pulleys, then works the Zugmittellager simultaneously as a bearing and a traction drive the drum.

The Zugmttellager stores and drives at the same time Tig the drum with high welding tolerances for circularity and concentricity without any problems. The career of the traction device is reinforced on the thin-walled drum shell with a bandage.

Around the traction means for very heavy drums to the limit of the necessary traction means bias To relieve, the traction means at the circumferential angle with elastic Supports roles.

For the hassle-free Movement about the axis of rotation in the case of two or more long-stored long drums, because of usual Sweat deformations, can the Support wheels springy be stored. The bigger the Swinging the drum from the center of the bearing, the larger the Restoring force in response to the swinging.

at Zugmittelagern comes the Zugmittelbelastung of the drum load. The traction means in Zugmittellagern with drive is with the force for the Drive torque of the drum additionally loaded.

at Zugmittellagerung the direction of rotation of the drum is arbitrary.

The invention will be apparent from the attached 1 for example, explained in more detail.

1 schematically shows an inventive, frictional Zugmittellager for a drum 1 with training wheels 10 , It consists of the housing 3 with arranged upper deflecting disks 5 and 6 , Deflection pulley 7 and a clamping device 8th ,

About deflection pulleys 5 . 6 . 7 and the chipboard 9 is an endless traction device 4 appropriate. Between upper deflectors 5 and 6 is an upper strand O of the traction device 4 , The upper strand O engages around the axis A rotating drum 1 at the circumferential angle β.

With a lot of weight of the drum 1 is the traction device 4 heavily loaded: To the traction means 4 Relaxing becomes a part of the burden of the drum by training wheels 10 accepted. training wheels 10 with elastic tires press independent of drum weight with unchanged surface pressure on the traction means 4 in the region of the wrap angle β.

By the execution with training wheels 10 is it possible the drum 1 to guide with the advantages of a Zugmittellagerung more accurate and the traction means 4 To relieve, to store and drive in two or more points very long and thin-walled drums, which are manufactured as welded constructions with normal running deviations, so that the bearings with the Zugmittellager in the context of the invention is much more economical.

1

drum

2

bandage

3

bearing housing

4

traction means

5, 6

upper deflection plate

7

deflection plate

8th

jig

9

tensioning pulley

10

stabilizer

A

axis

L

career

O

upper strand

R

outlet chamber

β

Wrap angle

Claims (1)

A Zugmittellager for the flexible attachment of rotating cylindrical machine parts or drums, characterized in that the Zugmittellager an endless traction means ( 4 ) in a bearing housing ( 3 ) on deflecting discs ( 5 . 6 . 7 ) and on a clamping disk ( 9 ) and a drum ( 1 ), which is considered as a journal or a pulley, with an upper run (O), said endless pulling means ( 4 ) at the upper run (O) in the region of the drum wrap angle (β) with support wheels ( 10 ) is supported.