NO20161707A1

NO20161707A1 - Structure of a hook

Info

Publication number: NO20161707A1
Application number: NO20161707A
Authority: NO
Inventors: Eldar Lien
Original assignee: Selantic As
Priority date: 2015-10-27
Filing date: 2016-10-27
Publication date: 2017-04-28
Also published as: NO345612B1; NO20151461A1

Description

HOOK STRUCTURE

Field of the invention.

The present invention relates to a new structure of a twin hook, as given in preamble of the following claim 1. Two essential applications of the twin hook structure are also disclosed.

Background of the invention.

The hook structure of the invention relates in particular to a hook structure for cranes for hoisting of different kinds of cargo.

An essential object of the invention is to have the advantage of håving a twin hook, where the hook angle will adjust to the sling angle, and thereby you can cope with different lifting/sling angles such as for handling container loads, without overloading the hook.

Disclosure of the state of art.

As to the state of art, reference is made to the following patent documents.US-3.337.256, RU-2.097303, SE-409.495 and CA-981.426.

Objects of the present invention.

Thus it is an object for the two hooks of the assembly to operate to automatically adjust their individual position or direction as to the rotation axis of the It is also an object to provide for preferred applications of the hook structure.

In short:

• It consists of two hooks that can have the same or different capacities.

• One is made with an eye interface in the top.

• The other is made with a Clevis interface in the top, and so that the eye hook fits into the clevis. • Both of them are connected with the same pin, either to a shackle as shown or a plate shackle.

The hooks can also be used one by one in performing lifting and lowering (hoist) operations of load.

Summary of the invention

The hook structure of the present invention ischaracterized ina twin hook structure of first and second hook members, wherein each of the hook members are individually rotatable (pivotable) on a common shaft, in that the second hook is arranged to be rotatable mounted on said shaft anchored in between two separate legs of the first hook member.

The preferred embodiments of the hook structure are defined in the following independent claims 2-7.

According to a first preferred aspect hook structure is used to handle load slings, such as of containers, or in offshore anchoring operations, said sling being directed in different angles from the hook members, in that the hook members individually will adjust automatic to the sling angle, and thereby one can cope with different lifting/sling angles without overloading the hook.

According to a second aspect hook structure with its the hook members and used one by one to handle and lifting or lowering load of any kind, i.a. performing offshore anchoring operations.

Description of the diagrams.

Embodiments of the present invention will now be described, by way of example only, with reference to the following diagrams wherein: Figure 1 shows a side perspective view partly in section of the twin hook of the invention.

Figure 2 shows an oblique perspective view the twin hook seen from above.

Figure 3 shows a perspective/sectioned view similar to that of figure 1.

Figure 4 shows a perspective view of the second hook element of the invention. Figure 5 shows a perspective view of the first hook element of the invention.

Description of preferred embodiments of the invention

By referring to figure 1 and 2, there is shown the hook assembly 40 mounted on suspending in or connection to for example a lifting line 140 (shown in general), such as a wire, lifting hawser of a crane for handling loads such as cargo or to operate anchoring systems at sea or similar uses.

In the example two separate hook structures or members 20 and 30 are mounted to rotate individually on a common axle 52 around an axis 50 in a shackle as shown by 40 in figures 1 and 2. The shackle consist normally of two parallel legs 42 and 44 to anchor the hook structures 20,30 onto the rotation axle 50. Preferably the axle 52 is rigidly connected to between the shackle legs 42, 44 while the two hook structures are enabled to rotate on the axle 50 around said axis 52.

Each hook structure comprise (in vertical) a shank or neck part 24,34 while the toe, horn or hook tips are shown at 23 and 33 respectively. The hook body is curved as well known and define line or sling 60 and 62 entrances shown at 22 and 32, representing the line, becket or strap holding parts of each hook, respectively. The curved portion between each tip 21/23 and each neck portion subtends an are of about 180° defines said line 60,62 holding part. The entrances 22, 32 of the two hooks may also be closed by a not shown latch structure.

The top interface part of a plate shape includes eye sections (bore) through which the axle extends.

The first hook member 20.

The top interface part of the first hook member 20 is also defined as a Clevis structure, in that it is composed of two separate and mainly parallel legs 36,38 in the form of plate structures 36,38 each one including its own eye section through which the shaft 52 extends. The two legs are at a fixed mutual distance from each other. In direction towards the line holding part, each leg is bent inwards and they are joined in the common shank portion 24. The first hook member may rotate on the axle 52.

The free end of the first hook member forms the line holding part as disclosed above.

The second hook member 30.

The second hook member is a single leg or plate structure 37 (figures 2, 3 and 4) mounted on the axle 52 in between said two separate plate structures 38 and 38. The free end of the second hook member forms the line holding part as disclosed above mainly similar to the first hook member.

The two hooks are arranged to rotate mutually individually around the common axis 50/axle 52 between the shackle legs 42 and 44.

The two hook structures are preferably mounted so that their curved portion, i.e. the line holding hook entrances 22 and 32 are directed mutually in opposite directions.

The second hook member 20, is arranged to be anchored to the axle 52 between the legs 36,38 of the first hook structure 30. The two plate structure of the first hook member define a cleft, cleavage or recession 35 into which the anchoring or rotating part of the second hook 20 is installed.

The rear/back side 41 of the second hook member 20 rests on the rear back side 39 in the cleft 35 between the to plates 36,38 of the first hook member 20. The two line holding hook parts face in opposite directions.

This leads to the structural feature that the back or rear side 41 of second hook structure 30 with its shank/neck 34 rests or rides on the similar rear/back (i.e. the neck 24) portion of the first hook structure 20.

This structure gives some restrictions to the mutual movement or rotation properties of the two hooks 20 and 30, but one of their objects in this invention is to handle slings, for example as shown by the two slings 60 and 62 that may extend in two different angle directions. When the rear sides 41 and 39 respectivley, abut against each other, a lowest angle a, of for example 30-45<0>(degrees) is defined between the two members. They are not enabled to pivot doser to each other around the axis, this issue being restricted by the shape of the rear sides 41,39 of their shank portions 24,34 respectively.

Thus, as mentioned above a major advantage of this is that twin hook is now established, where the hook angle will adjust automatic to the sling angle, and thereby one can cope with different lifting/sling angles without overloading the hook. The hooks 20 and 30 can also be used one by one.

Claims

1. Hook structure connecting hoisting line,characterized in thatthe hook structure is a twin hook structure of first (20) and second hook (30) members, wherein each of the hook members (20) are individually rotatable (pivotable) on a common shaft (52), in that the second hook (30) is arranged to be rotatable mounted on said shaft (52) anchored in between two separate legs (36,38) of the first hook member (20).

2. Hook structure according to claiml,characterized in thatthe legs of the first hook member (20) for connecting to the axle (52) defines a clevis structure, i.e. two separate plate structures (36,38) (figures 2, 3 and 5) respectively, and the second hook member (30) is a single plate structure (37) (figures 2, 3 and 4) mounted on the axle (52) in between said two separated plate structures (36,38).

3. Hook structure according to claims 1-2,characterized in thatthe two plate structures (36,38) of the first hook member define a cleft or recession (35) into which the anchoring or rotating part of the second hook (20) is installed.

4. Hook structure according to any of the preceding claims,characterized inthat the rear/back side (41) of the second hook member (20) rests on the rear back side (39) in the cleft (35) between the to plates (36,38) of the first hook member (20), in that the two line holding hook parts face in opposite directions.

5. Hook structure according to any of the preceding claims,characterized inthat the two hook members are structured to define a lowest angle a of 30-45<0>(degrees) between the two members.

6. Hook structure according to any of the preceding claims,characterized inthat the free ends of each of the first (20) and second (30) includes a line (60,62) holding part.

7. Hook structure according to any of the preceding claims,characterized in thatthe hook assembly (40) is mounted or suspending in or connection to for example a lifting line, such as wire, lifting hawser (140) of a crane for handling loads such as cargo or to operate anchoring systems at sea.

8. Use of the hook structure according to claims 1 -7, to handle load slings (60,62), such as of containers, or offshore anchoring operations, said sling being directed in different angles from the hook members (20,30), in that the hook members individually will adjust automaticto the sling angle, and thereby one can cope with different lifting/sling angles without overloading the hook.

9. Use of the hook structure according to claims 1 - 7, in that the hooks (20) and 30 are used one by one to handle and lifting or lowering load of any kind, i.a. performing offshore anchoring operations.