WO2011048025A1

WO2011048025A1 - Clamping screw and device for tying down containers on board ships using such a clamping screw

Info

Publication number: WO2011048025A1
Application number: PCT/EP2010/065535
Authority: WO
Inventors: Christian Bederke
Original assignee: Sec Ship's Equipment Centre Bremen Gmbh
Priority date: 2009-10-22
Filing date: 2010-10-15
Publication date: 2011-04-28
Also published as: DE202009014301U1

Abstract

The invention relates to a clamping screw, comprising a threaded spindle (12), a spindle nut (15) cooperating with the threaded spindle (12), and an anti-turn device (21), which blocks a rotation of the threaded spindle (12) and of the spindle nut (15) relative to each other in a securing position and allows said rotation in a clamping position. In order to provide an anti-turn device (21) that is easy to handle, the clamping screw according to the invention is characterized in that the anti-turn device (21) can be adjusted radially to the axis (33) of the relative rotation between the threaded spindle (12) and spindle nut (15) from the clamping position into the securing position and cooperates with a stop (16) in the securing position. The clamping screw according to the invention is suitable, in particular, for use in conjunction with a device for tying down containers on board ships.

Description

description

Clamping screw and device for lashing containers on board

Ships with such a clamping screw

Technical area

The invention relates to a clamping screw with a threaded spindle and cooperating with the threaded spindle spindle nut and an anti-rotation device which locks in a locking position, a rotation of the threaded spindle and the spindle nut relative to each other and releases in a clamping position. Furthermore, the invention relates to a device for lashing of containers on board ships with such a clamping screw.

State of the art

Such a clamping screw is known in a variety of variants.

They can be essentially in clamping screws with non-positive anti-rotation and clamping screws with positive

Divide anti-rotation lock. A non-positive rotation, for example, shows the DE 100 56 341 C2. As a rotation is a screw which is screwed and countered approximately perpendicular to the longitudinal axis of the threaded spindle against the threaded spindle. A similar anti-rotation is also known from EP 1 534 584 B1, in which additionally the bolt should be made of a softer material than the threaded spindle. In addition, EP 1 534 584 B1 shows further force-locking anti-rotation devices.

Positive locking against rotation show the following writings:

From DE 10 2007 041 403 A1, a clamping screw is known in which the threaded spindle has a square end face. On this square a security element with a corresponding square hole is placed as anti-rotation, which although in the longitudinal direction of

Threaded spindle slidably but non-rotatably connected to the spindle nut. A similar anti-rotation shows the

DE 10 2004 028 585 B4. However, the free end of the threaded spindle is formed here with a kind of star and the fuse element has a recess corresponding thereto. Also with one star-like element at the free end of the threaded spindle is the

Clamping screw according to DE 10 2005 005 575 B4 formed. The securing element is provided here with spring-loaded balls, which engage in the throats of the star-shaped element and thus ensure an anti-rotation. A kind of kinematic reversal is known from DE 10 2005 002 782 B4. Here, the securing element is provided with a star-shaped recess. The free end of the threaded spindle is cylindrical and can rotate freely in principle in the star-like recess. This cylindrical end has two diametrically opposed balls, which are each arranged at the outer end of a through hole transverse to the longitudinal central axis through the cylindrical end and arranged through a bore in this

Compression spring are biased outwards. Similar form-fitting

Anti-rotation devices are furthermore known from WO 2006/046921 A1.

The above-mentioned clamping screws are used for lashing of containers as deck cargo on board ships. One end, usually the end of the spindle, is fastened to the deck of the ship, while a lashing bar is hung in the other end. The lashing bar is in turn hooked into an eye in the corner fitting of the container. Subsequently, this lashing is tightened by means of the clamping screw. Subsequently, the clamping screw is secured by means of the rotation against rotation and thus unintentional loosening, so that the voltage is reliably maintained throughout the voyage.

Presentation of the invention

The invention is based on the problem, a clamping screw of

the type mentioned above with a reliable and easy

to design a manageable fuse against twisting.

To solve this problem, the clamping screw according to the invention is characterized in that the rotation is radially adjustable relative to the axis of relative rotation between the threaded spindle and the spindle nut of the clamping position in the securing position and in the

Secured position cooperates with a stop.

The rotation of the clamping screw according to the invention can be operate in a simple manner, namely by radial adjustment. It interacts in the securing position with a stop, thus forming a positive and thus very secure protection against twisting and, consequently, unintentional release of the lashing of containers formed on board ships.

Preferably, the stop of the spindle nut is assigned. In the

In this case, the threaded spindle associated against rotation thus acts directly with a spindle nut associated stop together, whereby an unintentional relative rotation of the threaded spindle and spindle nut against each other is directly prevented. Usually, connecting struts are welded to the spindle nut, which at its other end have a jaw for receiving the lashing bar. These may particularly preferably simultaneously serve as a stop for the rotation, so that no separate stop is required.

In order to prevent the rotation even accidentally returns from the securing position in the clamping position, the rotation is locked according to a development of the invention form-fitting in its securing position. Additionally or alternatively, the rotation can also be locked in its clamping position in which it allows a rotation of the threaded spindle and spindle nut relative to each other, in which case the locking preferably also takes place in a form-fitting manner. This facilitates the handling of

Clamping screw, as the anti-rotation device does not accidentally slip into the locking position during clamping or loosening of the clamping screw and thus the desired tightening or loosening of the

Clamping screw blocked.

According to a structural embodiment of the invention, the

Anti-rotation two or more securing positions and exactly one clamping position, which is arranged between the securing positions. The rotation can be in two or more directions from one clamping position in the different

Bring backup positions, which further simplifies handling. According to another simple structural embodiment of the invention, the rotation on a holding element, which is arranged and held on the front side of the threaded spindle. Furthermore, the

Anti-rotation on a fuse element, which of the

Retained holding member and is displaceable in the radial direction of the threaded spindle to this holding element. The retaining element is preferably connected non-positively to the threaded spindle. The retaining element is so easy to install and secured against loosening. Another advantage is that existing clamping screws can easily be retrofitted with the anti-twist device. The threaded spindle can have a bore, preferably a blind bore, in which the retaining element is held in a force-fit manner, preferably pressed in.

This can be done in a particularly simple and easy to install manner in that the holding element is a bolt with a bolt thread, which is not compatible with a thread in the bore, so that a clamping when inserting or

Screwing the bolt into the bore results. This can be done, for example, in that the bolt is a threaded bolt whose

Nominal diameter is greater than the core diameter of the bore and / or the bore is a threaded bore whose core diameter is smaller than the nominal diameter of the bolt. In each case, the core diameter of the bore should be smaller than the core diameter of the bolt. A still encompassed by this embodiment of the invention, the limiting case of such a connection is that either the bolt or the hole itself no longer have threads, but

are formed circular cylindrical. After a particularly simple structural design, the bore is a circular cylindrical

Blind hole and the bolt a commercially available hexagon head screw, wherein the nominal diameter is greater than the bore diameter. The core diameter of the hex bolt should be equal to or less than the bore diameter. Hexagon bolts are easy and extremely inexpensive to acquire and circular cylindrical holes very easy to produce. But there are also other incompatible Thread pairing of hole and bolt conceivable as only about the diameter. Thus, the geometry of the threads can not be made compatible, for example, different

Thread pitch, flank angle of threads or width of threads. Of course, any combination of the measures described above are possible. Additionally or alternatively, the bolt can also be glued or soldered or, as cohesive

Connection, also be welded.

Finally, it is a kinematic reversal of the one described above

Embodiments also possible, at the free end of the

Thread spindle to form a pin, for example, turn, and provided, for example, with a mother as a head. Here then again the above-described measure for securing the head on the pin are conceivable.

Brief description of the drawings

The invention will now be described with reference to the drawing

illustrated embodiment illustrated. In the drawing show:

A clamping screw with the features of the invention in plan view, Fig. 2, the clamping screw of FIG. 1 in side view with in

Tensioning position of anti-rotation,

Fig. 3 is a vertical section in the plane III - III of the clamping screw according to

2,

4 shows a partial region of the clamping screw according to FIG. 1 in a side view with an anti-twist device in the securing position, FIG.

5 is a vertical section in the plane V - V of the clamping screw of FIG. 4,

Fig. 6 is a vertical section in the plane V - V of the clamping screw according to

Fig. 4, but with the stop abutting rotation.

Way (s) for carrying out the invention

The clamping screw according to the invention has a spindle part 10 and a nut part 1 1. The spindle part 10 is essentially formed by a threaded spindle 12 and an end piece with the threaded spindle 12 connected fork 13 formed. By means of the fork 13 is the

Spindle part 10, for example, on a deck of a ship

struck welded eye, including a bolt 14 of the fork 13 is used.

The threaded spindle 12 is guided in a known manner by a pipe-like passage 15 therethrough. On the outside of the passage 15 are diametrically opposite two connecting struts 16 are mounted, namely welded. At its opposite end of the implementation 15, the connecting struts 16 are also connected to a receptacle 17 by welding. The receptacle 17 has a mouth 18, in which a lashing bar can be hung. Further, a sliding nut 19 is arranged in a conventional manner between the connecting struts 16 and in the region between the spindle nut 15 on the one hand and the receptacle 17, which has a spindle thread complementary to the threaded spindle spindle thread as an internal thread. The sliding nut 19 forms the spindle nut in the present case. It is secured against rotation relative to the connecting struts 16 and can be moved between the connecting struts 16 in the longitudinal direction thereof, so that the

Clamping screw, if not under load or tensioned,

can push together without having to screw the threaded spindle 12 completely. But there are also known clamping screws, in which instead of the implementation 15 a fixed spindle nut is provided.

The connecting struts 16 are also still connected to each other by a connecting web 19, wherein the threaded spindle 12 can be passed through the connecting web 19, without being in a threaded engagement with him.

At the fork 13 facing away from the front end of the

Threaded spindle 12 is an anti-rotation 21 against unwanted relative rotation of the threaded spindle 12 relative to the slide nut 19 is provided. The threaded spindle 12 has at this end face a blind bore 22, in which a conventional hexagonal screw 23 is pressed with a conventional hexagonal head 24 and so against loosening is secured. Specifically, a hexagon screw 23 M 16, so with a nominal diameter of 16 mm in a material bore with a diameter of 15 mm pressed. The hexagonal head 24 is spaced from the front end of the threaded spindle 12.

The anti-rotation 21 further comprises a guide plate 25 which has a mouth-like recess 26 at their outer end faces in each case. In these mouth-like recesses 26 access the

Connecting guide 16 and thereby guide the guide plate 25. The guide plate 25 is thereby guided in the longitudinal direction of the threaded spindle 12 and thus to the arranged parallel to it connecting struts 16 slidably. Further, the connecting plate 25 is disposed between the free end face of the threaded spindle 12 and the hexagonal head 24 of the hexagonal screw 23, wherein the hexagonal screw 23 is guided with its shaft through a bore in the guide plate 25.

The shank of the hexagon screw 23 is by a compression spring 27th

enclosed, which biases the guide plate 25 in the direction away from the threaded spindle 12. The guide plate 25 is thus always pressed in the direction of the hexagonal head 24 of the hexagonal screw 23. Since the compression spring 27 surrounds the shank of the hexagon screw, the compression spring is guided simultaneously.

On the opposite side of the compression spring 27 is located on the

Guide plate 25 a securing element 28. The hexagonal screw 23 is also passed with its shaft through the securing element 28, namely concretely through a slot 29 in the

Securing element 28. Accordingly, the hexagonal head 24 of the hexagonal screw 23 is arranged on the guide plate 25 opposite side of the securing element 28. The securing element 28 is thus clamped as it were by the force of the compression spring 27 between the guide plate 25 and the hexagonal head 24. In this case, the guide plate 25 facing away from the top of the fuse element 28 has three receptacles 30, 31 and 32, which in its contour with the

Hexagonal head 24 of the hexagon screw 23 correspond, so that the hexagonal head 24 can engage in these recordings 30..32.

In Figs. 1 to 3, the securing element 28 is in his

middle position, in which the hexagonal head 24 engages in the central recess 31. As can be seen, the securing element 28 is designed such that it can rotate freely between the connecting struts 16 in this position. In this position, the securing element 28 and thus the rotation 21 in their

Clamping position in which the threaded spindle 12 and the spindle nut

15 rotated relative to each other and so the turnbuckle can be stretched or released. When the required tension is reached, the operator presses the securing element 28 and with it the guide plate 25 in the direction of the fork 13, so that the hexagonal head 24 from the

Recording 31 is released. The securing element 28 can now be moved in a direction radially to the longitudinal central axis 33 of the threaded spindle 12 in the illustration of FIG. 3 up or down. Now the operator releases the securing element 28, so that it is pressed in the direction of the receptacle 17 due to the prestressing by the compression spring 27. As a result, the hexagonal head 24 comes into engagement with the receptacle 30 or 32, depending on the direction in which the securing element 28 has been moved.

In the illustration according to FIGS. 4 to 6, the securing element 28 has been displaced upwards so that the hexagonal head 24 is in engagement with the lower receptacle 32. In this position, the securing element 28 on one side so far that it is no longer free between the

Connecting struts 16 can rotate, as this of Fig. 6 especially

Becomes clear. Now, the threaded spindle 12 rotates relative to the nut 15, the securing element 28 abuts against one of the connecting struts

16, blocking another turn. The fuse element 28 is thus in its securing position. The clamping screw is secured against unintentional release.

Since the contour of the receptacles 30..32 the contour of the hexagonal head 24 is adjusted, the securing element 28 is positively against unintentional displacement in its respective position, ie in the Clamping position or one of the two securing positions, secured. LIST OF REFERENCE NUMBERS

10 spindle part

1 1 nut part

12 threaded spindle

13 fork

14 bolts

15 implementation

16 connecting strut

17 recording

18 mouth

19 sliding nut

20 connecting bridge

21 anti-twist device

22 threaded blind bore

23 hex screw

24 hexagon head

25 guide plate

26 recess

27 compression spring

28 fuse element

29 long hole

30 recording

31 recording

32 recording

33 longitudinal central axis

Claims

claims

1st clamping screw with a threaded spindle (12) and one with the

Threaded spindle (12) cooperating spindle nut (15) and a rotation (21), which in a locking position, a rotation of the threaded spindle (12) and the spindle nut (15) locks relative to each other and releases in a clamping position, characterized in that the

Anti-rotation (21) radially to the axis (33) of the relative rotation between the threaded spindle (12) and the spindle nut (15) is adjustable from the clamping position to the securing position and cooperates in the securing position with a stop (16).

2. clamping screw according to claim 1, characterized in that the

Stop (16) of the spindle nut (15) is assigned.

3. clamping screw according to claim 2, characterized in that the

Stop by a on the spindle nut (15) attached

Connecting strut (16) is formed.

4. Clamping screw according to one of claims 1 to 3, characterized in that the anti-rotation device (21) is positively locked in its securing position.

5. Clamping screw according to one of claims 1 to 4, characterized in that the rotation lock (21) in its clamping position, in particular form-fitting, can be locked.

6. Clamping screw according to one of claims 1 to 5, characterized in that the anti-rotation (21) has at least two clamping positions and exactly one, arranged between the clamping positions securing position.

7. tightening screw according to one of claims 1 to 6, characterized in that the rotation lock (21) one of a front side of the

Threaded spindle (12) arranged holding element (23) on the threaded spindle (12) held and in the radial direction of the threaded spindle relative to

Holding element (23) slidable securing element (28).

8. tightening screw according to claim 7, characterized in that the

Retaining element (23) non-positively connected to the threaded spindle (12).

9. tightening screw according to claim 8, characterized in that the Threaded spindle (12) has a (blind) bore (22), in which the holding element frictionally held, in particular pressed, is.

10. Clamping screw according to claim 9, characterized in that the

Holding member (23) is a bolt with a bolt thread, which is not compatible with a thread in the hole.

1 1. Tightening screw according to claim 10, characterized in that the bolt is a threaded bolt, in particular a hexagonal screw, whose nominal diameter is greater than the (core) diameter of the (blind) bore (22).

12. tightening screw according to claim 10, characterized in that the

(Sack) bore (22) is a threaded bore whose core diameter is smaller than the nominal diameter of the bolt.

13. Clamping screw according to one of claims 7 to 12, characterized in that the holding element (23) by a on the securing element (28) acting and in the direction of the securing element (28) biased compression spring (27) is enclosed, so that the securing element (28) by the compression spring (27) against a head (24) of the holding element (23) is pressed.

14. Clamping screw according to claim 13, characterized in that the

Securing element (28) receptacles (30, 31, 32), in which the head (24) of the holding element (23) can engage positively and thus the securing element (28) is secured against radial displacement.

15. Device for lashing containers on board ships,

characterized by a clamping screw according to one of claims 1 to 14.