DE202019100477U1 - shortening element - Google Patents

Abstract

Shortening element 1 preferably for shortening round link chains consisting of a head part 2 with a connection part, which is e.g. as a tab 13, fork 15 or the like. May be formed and a molded below the connecting part shortening hooks 5 for shortening the lower chain strand 17 whose end member 8 can be captively connected by means of a retaining bolt with the component, characterized in that in the head part 2 below the connector part on the same vertical parallel to the shortening hook 5 extending axis a fork 6 is provided, in which the end member 8 of the lower chain strand 17 can be secured by means of lockable locking pin 7.

Description

The invention relates to a shortening element, preferably for shortening round link chains consisting of a head part with a connection part, which is e.g. may be formed as a tab, fork or the like. And arranged below the head portion shortening hook, shortening claw or the like. To shorten a chain strand whose end member can be connected by means of a retaining pin with the shortening element.

Shortening hooks, shortening claws or the like are used primarily for shortening round link chains in the lifting and transport technology. Shortening hooks, shortening claws or the like. Are known in the art and are usually installed with additional fasteners or special stop means in chain hangers. If, for example, existing and already in use chain suspensions are retrofitted with shortening hooks, shortening claws or the like. Depending on the application and embodiment of the shortening hooks, shortening claws or the like. Often, the replacement of the existing suspension members against Sonderaufhängeglieder required because of the connecting elements of the shortening, shortening claws or the like. Additional connections in the suspension head are required, which in addition to considerable installation effort also causes additional costs.

In order to avoid additional connections are further state-of-the-art designs of shortening hooks, shortening claws or the like. Known, which can be installed directly in a chain strand. The shortening hooks, shortening claws or the like. Have at the upper end designed as a fork connecting device in which the end member of an upper chain strand can be fastened by means of a bolt. A chain link of the lower chain strand is then hooked into the shortening hook, the shortening claw or the like. In order to prevent the loss of hanging in a shortening hook, shortening claw or the like. Unexpectedly dropped chain strand and also for safety reasons trying to attach the end member of the lower chain strand to the shortening hook, the shortening claw or the like.

Such a shortening element is for example from the DE 4021032 A1 known. In such a shortening element is located at the lower end of the shortening hook a fork with provided in their legs aligned holes for receiving a retaining bolt, with the aid of an end member of the chain is hooked into the fork, the main axis lying between the legs of the fork approximately through the Center axis of the insertion slot runs. A disadvantage of such a shortening element is that due to the arrangement of the retaining bolt for the end member of the chain below the shortening hook the minimum value of the shortenability of the chain strand is comparatively high, since the number of chain links required to form the required chain loop between the end member of the chain strand and the hook in the shortening hook chain link is comparatively large.

Another shortening element is from the DE 202005006757 U1 known. With such a shortening element, the minimum value of the shortenability is considerably shorter than in the embodiment according to the arrangement of the retaining bolt for the end member of the chain strand DE 4021032A1 , but due to the arrangement of the retaining bolt for the end member of the chain strand of this shortening element can be installed directly in a special suspension head or intermediate member with flattening in the leg. The mounting position directly on the suspension head of a chain strand is often disadvantageous especially for long chain hangers, since for operating the shortening element the suspended in the crane hook suspension head with the shortening element located on it must be completely shut down, which makes the alignment of the respective load considerably more difficult because the length adjustment of the Load-bearing chains often must be repeated until the load gets the desired position.

By means of such solutions while shortening the chain strand and securing against loss by fixing the end member is possible, but it always requires more complex special designs of suspension heads and shortening elements. The integration of existing and widely used shortening hooks, shortening claws or the like. While maintaining the standardized suspension heads is not possible.

Based on this prior art, the present invention seeks to further develop an abovementioned shortening element such that both the minimum value of shortenability is significantly reduced and the universal installation position in the chain strand without special links is possible and on the other hand, the use of existing suspension heads and shortening hooks , Shortening claws or the like. Is possible.

This object is achieved for a shortening element of the type mentioned fact that the head of the shortening element is releasably connected to the shortening hook, the shortening claw or the like., And that the fork, in which the end member of the shortenable chain strand can be fastened with a lockable retaining bolt, in the head part directly below the z. B. as a tab, fork or the like. Formed for receiving a chain link serving connection part is arranged. The detachable connection between the head part and shortening hook, shortening claw or the like. Is advantageously designed as a tab with mounting hole so that it can be secured by means of lockable retaining bolt in the fork of a prior art shortening hook, a shortening claw or the like.

By arranging the attachment of the end link of the lower chain strand above the shortening hook, the minimum value of the shortenability can be significantly reduced. Due to the design of the connection part as a fork with provided in their legs aligned bores for receiving a retaining bolt by means of which the end member of the upper chain strand is suspended, the shortening element can be used without additional aids. It proves to be advantageous beyond that the entire length of the shortening element can be shortened by the fact that the head part is arranged parallel to the shortening hook with the connection part and lying below on a common axis fork for the end member of the lower chain strand.

In an alternative embodiment, the connecting part of the head part is designed as a tab with a mounting hole which can be attached directly by means of retaining bolts in the fork of a fork connector, as in the prior art and in suspension heads in sling chains customary. It is particularly advantageous here that e.g. existing chain hangers that are not yet equipped with a shortening hook, shortening claw or the like., Can easily be retrofitted with these, without the existing suspension head must be replaced by a suspension head with additional Abmöglichungsmöglichketen for shortening hooks, shortening claws or the like.

In a further alternative embodiment, the head part is formed directly on the shortening hook, shortening claw or the like. Particularly advantageous is the use of such an embodiment in the field of transport technology, since e.g. in a lashing chain in which as few components as possible are to be installed, all components especially when not in use against e.g. Losing must be secured. The connecting element described above can be directly connected to a prior art tensioning device without the need for additional connecting elements for the connection of shortening hooks, shortening claws or the like.

The invention is described below with reference to several embodiments with reference to the figures.

• 1: eine schematische Vorderansicht einer Ausführungsform des Verkürzungselementes mit unverkürztem Kettenstrang;
• 2: die schematische Vorderansicht des Verkürzungselementes gemäß 1 mit verkürztem Kettenstrang;
• 3: die schematische Vorderansicht einer weiteren Ausführungsform des Verkürzungselementes mit unverkürztem Kettenstrang und Kettenglied im Anschlussteil;
• 4: die schematische Vorderansicht des Verkürzungselementes gemäß 3 mit verkürztem Kettenstrang und Lasche eines Kettenspanners im Anschlussteil;
• 5: die schematische Vorderansicht einer weiteren Ausführungsform des Verkürzungselementes mit unverkürztem Kettenstrang;
• 6: eine schematische Seitenansicht des Verkürzungselementes gemäß 5 mit unverkürztem Kettenstrang.

Show it:

• 1 a schematic front view of an embodiment of the shortening element with unabridged chain strand;
• 2 : The schematic front view of the shortening element according to 1 with shortened chain strand;
• 3 : The schematic front view of another embodiment of the shortening element with unabridged chain strand and chain link in the connection part;
• 4 : The schematic front view of the shortening element according to 3 with shortened chain strand and lug of a chain tensioner in the connection part;
• 5 : The schematic front view of another embodiment of the shortening element with unabridged chain strand;
• 6 : a schematic side view of the shortening element according to 5 with uncut chain strand.

1 , shows the front view of a shortening element 1 with one in the headboard 2 as a tab 13 trained connection part by means of a fastening bolt 14 in the fork 19 of the fork connector 4 of the suspension link 3 is attached and at the below the connection part on the same vertical axis a fork 6 is provided, in which the end member 8th of the lower chain strand 17 by means of lockable retaining bolt 7 is attached. Parallel to the axis of the uncut lower chain strand 17 is a shortening hook 5 arranged with the headboard 2 of the shortening element 1 connected is. The tab 13 The connecting part is designed so that it is both for direct inclusion in the fork 19 a fork connector 4 a suspension link 3 a lifting chain or in the fork of a chain tensioner, not shown here a lashing chain is suitable.

2 , shows the front view of the in 1 , shown shortening element 1 with shortened lower chain strand 17 , To shorten the lower chain strand 17 the smallest possible amount requires only 5 links to form the loop required for shortening. This corresponds to a shortening of the lower chain strand 17 by an amount that corresponds to only the 1-fold chain link division. That in the shortening hook 5 hinged chain link 9 rests with its longitudinal leg on the cross yoke 18 of the shortening hook 5 from.

3 , shows the front view of another embodiment of the shortening element 1 with a fork 15 trained connection part in the headboard 2 , In the fork 15 is by means of retaining bolts 14 the end member 16 attached to the upper chain strand.

4 , shows the front view of the in 3 shown shortening element with shortened lower chain strand 17 , In the fork 15 is by means of retaining bolts 14 the tab 23 the chain tensioner 24 attached.

5 , shows the front view of another embodiment of the shortening element 1 with a fork 15 trained connection part in the headboard 2 in the end member 16 of the upper chain strand by means of retaining bolts 14 is attached. The shortening hook 5 is in this embodiment directly to the headboard 2 formed.

6 , shows the side view of the in 5 shown shortening element. The shortening hook 5 has an insertion slot 10 with substantially mutually parallel lateral support surfaces 11 and 12 and a cross yoke 18 ,

LIST OF REFERENCE NUMBERS

1

shortening element

2

headboard

3

Master link

4

fork connector

5

shortening hook

6

Fork of Endgliedaufnahme lower chain strand

7

Retaining pin of the end link lower chain strand

8th

End link lower chain strand

9

Hinged chain link

10

insertion slot

11

front lateral support surface

12

Rear lateral support surface

13

Tab as connection part

14

Mounting bolt connection part

15

Fork connection part

16

End link upper chain strand

17

Lower chain strand

18

crosshead

19

Fork of the fork connector

20

Tab as a connection to the shortening hook

21

Bolt shortening hook

22

Fork shortening hook

23

Tab chain tensioner

24

chain tensioner

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4021032 A1 [0004, 0005]
• DE 202005006757 U1 [0005]

Claims (6)

Shortening element 1 preferably for shortening round link chains consisting of a head part 2 with a connection part, which may be formed as a tab 13, fork 15 or the like. And formed below the connection part shortening hook 5 for shortening the lower chain strand 17 whose end member 8 by means of a retaining bolt can be permanently connected to the component, characterized in that in the head part 2 below the connection part on the same vertical parallel to the shortening hook 5 axis extending a fork 6 is provided, in which the end member 8 of the lower chain strand 17 can be secured by means of lockable locking pin 7. Shortening element 1 according to Claim 1 characterized in that the distance between the retaining pin 7 and the transverse yoke 18 of the shortening hook 5 is dimensioned so that the shortest possible shortenability of the lower chain strand 17 corresponds to the amount of 1 times chain link division. Shortening element 1 according to Claim 1 to 2 characterized in that the head part 2 is releasably connected to the shortening hook 5 by means of a fork 20 of the shortening hook 5 dipping lug 20 and lockable pin 21. Shortening element 1 according to one of Claims 1 to 3 characterized in that the connecting part is formed in the head part 2 as a fork 15, in which, for example, the end member 16 of the upper chain strand can be secured by means of lockable retaining bolt 14. Shortening element 1 according to Claim 1 to 3 characterized in that the connecting part is formed in the head part 2 as a tab 12 which can be secured by means of lockable retaining pin 14 in the fork 19 of the fork connector 4. Shortening element 1 according to Claim 1 to 2 characterized in that the head part 2 is formed directly on the shortening hooks 5.

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