DE20008843U1 - Holding device to reduce physical stress during welding - Google Patents

Description

Holding device to reduce physical strain during welding

The invention relates to a holding device for reducing the physical strain during welding, in particular the static arm strain and the influences caused by weather conditions when welding outdoors. It is particularly suitable for narrow-gap welding of rails, which requires relatively long work processes.

It is generally known that the welder is exposed to a high level of physical strain, particularly in technologically unchangeable work processes, and in particular to strain on the arm. This is particularly true for narrow-gap welding of rails, as in this case the welding torch must be held and guided relatively steadily in a very small space over a long period of time. But other welding tasks are also comparable. It should be remembered that the welder has to support the weight of the welding torch and part of the hose package with his arm.

In metalworking technology, it has long been known to hang tools such as screw drivers, drills or grinders on so-called spring balancers, so that the craftsman is essentially freed from the burden of the tool and only has to take on the task of guiding the tool. In welding technology, such a procedure is unknown for unknown reasons. Another problem is that the welding point must be covered as much as possible from the surroundings.

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There are two reasons for this: Firstly, the welding point needs to be shielded from the surroundings because of the risk of glare, especially when welding tram tracks. Secondly, the welder and the welding point need to be protected from the effects of the weather, such as rain. This has generally been done by installing screens around the welding point, which are arranged separately in the area of the welding point. This situation is generally considered unsatisfactory, as it requires more preparation work.

The aim of the present invention is therefore to reduce the physical strain on the welder. This applies in particular to the static strain on the arm, which is unavoidable when welding narrow gaps on rails with the necessarily long working sequence. On the other hand, the welder should be protected from special weather conditions such as rain and snow and possibly wind. The risk of glare in the area surrounding the welding point should not be underestimated, as this can occur particularly when welding tram rails and must be avoided.

This object is achieved by the invention in that a gallows-shaped suspension device for a known, commercially available spring balancer is attached to a fastening element which is adapted to the local conditions, which takes up the load of the welding torch and hose package and supports the arm of the welder, especially during long work processes - as

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when welding narrow gap rail joints. In order to adjust the optimum suspension point to the attachment of the device to the base, for example to the rail head of the rail to be welded, the holding device is expediently designed so that the stand is mounted telescopically vertically and can also be rotated about its axis. In addition, the spring balancer should be able to be moved horizontally on the suspension device so that a real 3-dimensional positioning of the pull wire end and thus the suspension point of the hose package including the welding torch is possible. At the same time, the holding device takes over the puncture of the welding point protection, which serves both to protect the welder from environmental influences and to protect the welding point environment before the welding process.

For this purpose, the horizontal guide arm of the holding device is provided with mounting elements that can accommodate a weather protection and anti-glare screen. They enable the screen to be moved horizontally or relocated, and can also be adjusted vertically and/or at an angle to the horizontal. The weather protection and anti-glare screen can also be designed in such a way that it largely covers the area around the welding point with additional protective screens.

The invention is explained in more detail below using an embodiment:

A fastening bolt is placed on the rail crown 2 in the area of the rail joint to be welded.

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fastening element 1 on which the base bearing 1.1 is placed and fixed with clamping elements 3 (not shown). The fastening element 1 with base bearing 1.1 carries the stand 4, which is expediently designed as a tubular construction in two parts, telescopic, rotatable and lockable. The stand 4 has a cantilever and guide arm 5, which can be locked with clamping elements 12 or designed as a welded connection. Two components are movably attached to the cantilever arm 5: This is the spring balancer 6, the tension wire 7 of which is attached to the hose package 8 or the welding torch 9 in such a way that there is balanced statics in the area of the welding torch 9, and on the other hand there are receiving elements 10; 4.1 which can accommodate a weather shield 11 in a horizontally and vertically adjustable manner.

The weather shield 11 can also be provided with anti-glare elements (not shown) which extend down to the area of the welding point and thus ensure ideal protection for the welder and the environment.

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List of reference symbols

1. Fastening element 1 . 1 floor bearing

2. Rail crown

3; 12, 12.1 Clamping elements, welded joint

Ai Stand

5. Guide arm

6. Spring balance

7. Pull wire

8. Hose package

9. Welding torch

10; 4.1,Receiving elements

11. Anti-glare (weather) umbrella

Claims (4)

1. Holding device for reducing the physical strain during welding, in particular the static arm strain and the influences caused by weather conditions when welding outdoors, preferably when welding narrow gaps on rails, characterized in that a base bearing ( 1.1 ) fastened to a fastening element ( 1 ), for example a U-shaped profile adapted to the rail crown ( 2 ) with suitable clamping elements ( 3 ), a telescopically longitudinally adjustable and rotatably mounted stand ( 4 ) is fastened to which a horizontal guide arm ( 5 ) is located which horizontally displaceably receives a spring balancer ( 6 ) known per se, the pull wire ( 7 ) of which is suspended loosely and movably on the hose package ( 8 ) of the welding torch ( 9 ) at a statically balanced point in a receiving ring ( 8.1 ). 2. Holding device according to claim 1, characterized in that the horizontal guide arm ( 5 ) is simultaneously provided with receiving elements ( 10 ; 4.1 ) which can receive a weather protection and anti-glare screen ( 11 ) which can also be used in a suitable manner vertically and, if necessary, at a horizontal angle. 3. Holding device according to claim 1 or 2, characterized in that the support arm ( 5 ) is screwed to detachable bracing elements ( 12 ). 4. Holding device according to one of claims 1-3, characterized in that the support arm ( 5 , 4 ) is designed in a welded connection ( 12.1 ).