DE20210692U1 - Roller for a container that is loaded on a lorry, consists of a number of roller sections on the same axis, which is held in a holder - Google Patents

Abstract

A roller for a container (1) that is loaded on a lorry, consists of a number of roller sections (10,11,12) on the same axis (5), which is held in a yoke type holder (7) by a fixing member (6). The sections are made of a polymer material, eg a polyurethane or polyamide, or out of steel.

Description

DARH0001 (949/02)

D16/D5207

KB-AC/co

Container roll
The invention relates to a roller for roll-off containers.

Roll-off containers are known from the prior art which have a pair of rollers at their rear end and are provided with engagement means at their opposite end into which a hook, for example, can engage. A roll-off container of this type is loaded onto a truck by a hook connected to a lifting device attached to the truck engaging an opening on the front of the roll-off container, the lifting device slightly lifting the container on this side and finally pulling it onto the truck. Further devices ensure that the roll-off container is firmly locked in place after it has been loaded onto the truck.

is Since the container is initially only lifted on one side when it is loaded onto the truck, it is dragged along the ground on the opposite side until it is finally loaded onto the truck. To make it easier to drag along the ground and to avoid excessive wear and tear on it, roll-off containers are fitted with rollers on the rear on which the side of the container that is not lifted can roll during the dragging. Typically, a pair of rollers is used, one on the left and the other on the right.

Apart from being loaded onto a truck, such roll-off containers are also useful because they can be lifted on one side and transported on the aforementioned rollers in a slight longitudinal incline.

Lifting on one side and transporting over short distances often takes place on company premises, for example by waste disposal companies, and can be carried out using a wheel loader or similar.

The German utility model 93 16 637 discloses such rollers for roll-off containers with roller bodies made of a polyurethane material. Alternatively, the roller bodies can also be made of other polymers such as polyamides or steel. The use of a polymer for the roller bodies has the advantage that rolling is significantly quieter and the floor is significantly less worn.

&iacgr;&ogr; A disadvantage of the prior art is that such rollers can quickly become blocked if dirt or other objects come into the area of the bearings that allow the rollers to rotate. The rollers can also become blocked simply by driving over objects on the floor, for example if the object becomes stuck in the roller surface, which can happen particularly with rollers made of polymer material. Finally, the roller can also become blocked if an object that appears in front of the roller is not overcome by the roller but is pushed in front of the roller. The latter is a problem in particular because the diameter of the rollers is comparatively small.

If a roll-off container with a blocked roller is pulled over a long distance without the driver of the towing vehicle noticing, the blocked roller drags along the ground, wears down significantly and becomes out of round. This wear is so severe that the roller is no longer usable after a short time and has to be replaced. The ground over which the roll-off container is pulled, for example the asphalt of a company site, is also subject to increased wear. Experience has shown that excessive wear on container rollers is a particular problem because a typical company site often has a large number of objects that can cause the roller to become blocked.

The aim of the invention was therefore to provide a roller for roll-off containers that is less prone to wear.

The object is achieved according to the invention in that the roller is divided into several partial rollers which can rotate independently of one another on a common axis.

The installation of several individual rollers on a common axle, which can rotate independently of one another, has the advantage that if one roller is blocked, at least one other, but preferably several freely rotating rollers remain, so that the container is supported by the rollers that continue to rotate. Since the probability of several rollers blocking at the same time is very low, the roller consisting of several rollers can practically always rotate. Accordingly, the rear side of the container does not drag on the floor, but continues to roll. In this way, both roller wear and abrasion of the floor are reduced.

is prevented or at least significantly limited. Since the remaining rotating rollers take over the function of the blocking roller, their abrasion is also reduced.

The roller bodies of the individual roller sections are advantageously made of a polymer, for example a polyurethane or a polyamide material. 0 Roller bodies made of polymers of this type produce significantly less noise and wear down the floor over which they are pulled less than rollers made of steel.

Alternatively, it is of course also possible to manufacture the roller bodies from steel, which offers the advantage of greater durability.

Where necessary, the partial rollers are each mounted on bushings on their common axis. This ensures that the partial rollers can rotate around the axis without any problems and can be easily replaced if they become worn.

The invention is illustrated by the accompanying drawings. They show:

Figure 1 Figure 2

the rear view of a roll-off container with rollers according to the state of the art,

a roller according to the state of the art and

Figure 3

a roller according to the invention.

The rear view of a roll-off container 1 according to the prior art is shown in Figure 1. The roll-off container 1 has a roller 2 on the left and right, the roller body 4 of which is one piece. In addition, the roll-off container 1 has means 3 on its underside with the aid of which it can be locked onto a truck or similar.

Figure 2 shows a roller 2 according to the prior art in detail.

is The roller body 4 is one-piece here. This roller body 4 is rotatably mounted on a fixed axle body 5, which is fastened by detachable fastening means 6 to a fork-shaped holder 7, which in turn is fastened to the roll-off container 1. The roller body 4 of the roller 2 has a common axis 8 with the axle body 5, is mounted on this axle body 5 by a simple plain bearing and rolls on the floor 9.

Finally, Figure 3 shows a roller according to the invention in which the roller body is divided into three parts. The roller here is therefore made up of three individual roller parts 10, 11 and 12, which are mounted independently of one another on the common axle body 5, also by means of a plain bearing. If, for example, the middle roller part 11 is blocked, the two outer roller parts 10 and 12 are still functional, so that the rollers 10, 11 and 12 as a whole can continue to roll over the floor 9, which reduces abrasion and thus increases the service life.

Claims (5)

1. Roller for roll-off containers ( 1 ), characterized in that the roller is divided into several partial rollers ( 10 , 11 , 12 ) which are mounted on a common axle body ( 5 ) so as to be independently rotatable. 2. Roller according to claim 1, characterized in that the roller bodies of the partial rollers ( 10 , 11 , 12 ) consist of a polymer material. 3. Roller according to claim 2, characterized in that the polymer material is a polyurethane or polyamide material. 4. Roller according to claim 1, characterized in that the roller bodies of the partial rollers ( 10 , 11 , 12 ) consist of steel. 5. Roller according to one of claims 1 to 4, characterized in that the partial rollers ( 10 , 11 , 12 ) are bush-mounted.