DE1212699B - Lifting device for piece material, such as B. stones - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

B 66c

German class: 35 b -6/10

Number: 1212 699

File number: N21069XI / 35b

Filing date: January 15, 1962

Opened on: March 17, 1966

The invention relates to a lifting device for piece-shaped material, such as. B. stones or the like consists of a number of interconnected chains.

When digging stones from narrow pipe trenches or canals, it is often very difficult due to a lack of space difficult to attach chains or lifting tongs to the stones. In such cases it is also difficult to place the stones by hand in fixed lifting containers, especially if they are centrally loaded should be, which is of great importance when lifting the container out of narrow trenches. the Lifting device according to the invention is primarily intended for lifting stones from to facilitate narrow pipe trenches, shafts and similar floor recesses, but it is suitable also good for loading large and heavy stones.

There are known lifting devices which are made of rope-like or cable-like material. These Lifting devices are practically only used for loading soft material, for lifting and Loading of hard and heavy goods such as stones, on the other hand, is generally prohibited for safety reasons. The stones can easily damage the net material, so that the net tear and cause serious accidents.

In the known, consisting of chains lifting devices for piece-shaped material are the Chains in relation to each other adjustable to the size of the chain network in each case to the extent of the lifting stones or the like. To be able to adapt. However, it is practically difficult and relatively demanding much time to properly adjust the chains of such a device. Apart from that you can do this Use stone lifting devices only to lift a single stone at a time. It can be practically never check with certainty that the chains of the device fix the stone correctly and reliably include. The stone can therefore rotate or shift during lifting, depending on its shape and fall out of the lifting device, which also leads to serious accidents can. The aim of the invention is to remove these 1 s eight parts of the known lifting devices from one another to eliminate connected chains in a simple and safe way.

The invention consists essentially in that the chains of the lifting device with one another are firmly connected that a bag is formed, the boundary edge of which is formed by an endless chain is within which a number of the bag

Lifting device for piece-shaped material, such as. B. stones

Applicant:

Karl Erik Nilsson, Lidingö (Sweden)

Representative:

Dipl.-Ing. E. F. Eitner, patent attorney,

Munich 5, Erhardtstr. 8th

Named as inventor:

Karl Erik Nilsson, Lidingö (Sweden)

Claimed priority:

Sweden, January 19, 1961 (506)

resulting chains are firmly connected to each other and with the endless chain that is attached to two opposite The end zones of the bag have eyelet-like extensions extending beyond the bag network, so that the boundary edge of the bag when spreading on a substantially flat and horizontal base results in a substantially oval shape.

With the help of such a device it is possible to lift very large stones without these stones first put on the bag or to have to attach the same to the bag, as is the case with the known ones Chain hoists is the case. Rather, you can just use the whole bag like a noose around a stone, and when the device is then lifted, the boundary edge slips of the bag under the stone, which is thereby automatically captured by the bag and centered in the same will. Since the chains are firmly connected to each other, it is necessary to adapt the lifting device to the Size and shape of the respective stones are not necessary. There are when lifting the device according to Invention automatically encompasses one or more stones regardless of their shape from the device, in such a way that it is impossible for the stones to fall out of the bag. Handling the

609 538/89

Lifting device and its safe function is considerably facilitated or improved in this way.

An embodiment of the lifting device according to the invention is given below with reference described in more detail on the drawing.

F i g. Fig. 1 shows a plan view of the lifting device;

F i g. 2 shows a perspective view of the lifting device when lifting piece-shaped material, and '

Fig. 3 shows a perspective view of the upper part of the lifting device, on which a support member for holding apart the end parts of the Lifting device is attached.

On an endless chain 1 are with their ends Chains 3, 3 'arranged almost in parallel are attached. Between these chains 3, 3 'are with their ends a number of short chains 4, 4 'attached so that a chain bag is formed, which is attached to the endless Chain 1 is attached. The endless chain 1 forms extensions at two end zones of the chain bag 1 'and 1 "in the form of eyes for a load hook 2 or another lifting device.

If the lifting device is to be used for lifting piece-shaped material, for example stones 5, S ', these can be rolled up onto the lifting device when the latter is spread out flat. The loop-like extensions Γ, 1 "of the chain bag can then be hooked into the load hook 2. When lifting, the stones 5, 5 'are encompassed by the chain bag so that they cannot fall out When unloading the stones 5, 5 'from the chain bag, this can be lowered onto a horizontal surface so that the stones 5, 5' can be rolled out. It is also possible to use one of the loop-like extensions 1,1 'of the chain bag from the load hook 2 and then continue lifting, whereby the stones can be removed from the chain bag without manual HiMe. Through the loot network 3, 3', 4, 4 'the load on stones 5, 5 Distributed fairly evenly over the chain links in the hoist, especially the links in the bag network, which gives a very good safety factor for the lifting device. Because of its simple construction, the lifting device can be manufactured at a relatively low price.

When loading larger and therefore heavier stones, they do not first need to be lifted onto the lifting device to be brought up. The chain bag is simply placed around a larger stone and raised with a hoist. The stone is automatically when the chain bag is lifted guided into this by placing the endless chain 1 on the boundary edge of the chain bag between is pressed into the stone and the soil surface.

Since the lifting device according to the invention is made only of chains, the evenness Retains its strength for a long time, and any damage that may have occurred can easily be discovered will.

The lifting device can with a support device z. B. in the form of crosswise joined together rods 6, 6 'made of steel or the like, which are formed at their ends to hooks 7, T , in which the loop-like extensions 1', 1 "can engage , 6 'can expediently be provided with a firmly attached hook 8 at their intersection, into which a lifting element, such as the load hook 2 or an eye, can be inserted The support device can also be fixedly arranged at one end of the chain bag, so that the support device and the actual chain bag form a unit.

The invention is not limited to the described and

ao limited embodiment shown in the drawing, but it can be varied in different ways within the scope of the inventive concept. Thus, the lifting device, ie the chain bag, can be manufactured in different sizes as required, the chains being dimensioned accordingly. The hooks 7, 7 'of the support device can also be shaped so that the end zones of the bag, ie the loop-like extensions 1', 1 ", can be inserted into the hooks 7, 7 'mentioned, the loop-like extensions 1', 1 " When the chain bag is loaded, slide into the hooks 7, T , so that the chain bag is automatically centered in the supporting device with the load. The hook 8 of the support device can also be exchanged for a permanently attached ring or the like.

Claims (1)

Claim: Lifting device for piece-shaped material, such as. B. stones or the like, consisting of a number of interconnected chains, characterized in that the chains (1, Γ, 1 ", 3, 3 ', 4, 4') are firmly connected to one another in such a way that a bag is formed , the boundary edge of which is formed by an endless chain (1,1 ', 1 "), within which a number of chains (3,3', 4,4 ') forming the bag are fixed to one another and to the endless chain (1,1 ', 1 ") is connected, which at two opposite end zones of the bag has eyelet-like extensions (1', 1") going beyond the bag network, so that the boundary edge (endless chain 1,1 ', 1 ") of the bag when spreading out results in a substantially oval shape on a substantially flat and horizontal surface. Considered publications:
German Patent No. 868,658;
British Patent No. 850804; Swedish Patent No. 108,409;
U.S. Patent No. 1118 519. 1 sheet of drawings 609 538/89 3.66 © Bundesdruckerei Berlin