WO2008155049A1

WO2008155049A1 - Device for firmly gripping a rod-shaped, bar-shaped, cable-shaped or similar-shaped object

Info

Publication number: WO2008155049A1
Application number: PCT/EP2008/004655
Authority: WO
Inventors: Fernando Brasolin
Original assignee: Fernando Brasolin
Priority date: 2007-06-19
Filing date: 2008-06-11
Publication date: 2008-12-24
Also published as: ITBZ20070026A1

Abstract

The invention relates to a device for firmly gripping a rod-shaped, bar-shaped, cable-shaped or similar-shaped object that extends through the device and for displacing said object in the direction in which a counter-force is exerted, said counter-force being counter to the displacement of the object (1). Said device comprises a clamping device (2) that clamps the inside of the object (1) that is to be clamped. According to the invention, the clamping device (2) only operates in one direction, the sliding of the clamping device (2), operating in only one direction, is authorised with respect to the object (1) in the direction of actuation of the counter-force, when sliding in the direction opposite to the direction of actuation of the counter-force is prevented.

Description

FIXING DEVICE FOR A STAINLESS, STAINED, ROLLED OR SIMILAR OBJECT

DESCRIPTION The invention relates to a device for the fixed gripping of a rod-shaped, rod-shaped, rope-shaped or similar object according to the preamble of claim 1. Such devices are used when you want to insert a particularly long object in a device, while counteracting a counter force must oppose this action. This can be done, for example, in the industrial field if, for some reason, you have to insert a very long object into a device in order to bring it into a position in which blocking agents become effective, which are located inside the device.

Another common and important application is the loading of harpoons, in particular the harpoon which are pressurized with compressed air. In this action, the end of a pointed rod is inserted into the mouth of the harpoon, and then, after placing the end of the rod on the piston of the harpoon, the rod is pushed vigorously with one hand towards the inside of the harpoon. The end of the rod resting on the piston will thus push the piston along the longitudinal axis of the barrel of the harpoon, sliding in the barrel and moving away from the mouth until it is blocked in suitable blocking means. This compresses a pressurized fluid, which will then expand upon firing the harpoon and bring the piston close to the mouth, and thus the rod out of the harpoon. The pressurized fluid responds with increasing counterforce to the increasing compression.

At present such actions happen, in case of loading of a harpoon the object with hands is taken, or, in case of industrial processes the object with

Clamping devices is gripped, which clamp the object so that in no way a sliding of the object relative to the clamping device is allowed, that is, a mutual sliding between the object and

Clamping device in both directions of the direction of action of the reaction force is prevented.

Usually, especially in the case of very long objects, the moving of the object takes place in several acts by shifting the point at which one grasps the object several times. More precisely, one grasps the object and executes a first movement, then one leaves the object free while someone or something holds the object in position, one seizes again the object in a place which lies a little further back, in order to have possibility of movement again and you do a second movement and so on until the whole movement is done.

When loading harpoons, performing the above actions is not a problem as you use your hands. The use of the hands, however, is a disadvantage in other respects, since the use of the hands on the strength of the handle has influence, especially in the water where the hands are wet and because of the fact that in harpoons the counterforce is very large. In the case of industrial processes, on the other hand, there is the main disadvantage in difficulty to carry out the above actions very quickly. The fact that the jig is effective in both directions of the direction along which the movement of the object occurs, namely forces the user of the jig at each displacement of the point at which the object is taken to completely release the device, they again at one to arrange a new position and block it there again. The object of the present invention is therefore in the development of a device for the fixed gripping a rod-shaped, rod-shaped, rope-shaped or similar object, on the one hand allows a firm gripping and on the other hand, a simple displacement of their point of attack along the object. This object is achieved by a device for firmly gripping a rod-shaped, rod-shaped, rope-shaped or similar object having the features indicated in the characterizing part of claim 1. The only acting in a single direction jig which is provided according to the invention for the device, glossily eliminates all the above disadvantages. On the one hand, with harpoons, it is not necessary to grab the spear of a harpoon directly while loading a harpoon. This improves safety by reducing the risk of losing the grip. In addition, when loading, the user is able to apply greater pressure to the bar than was possible with his bare hands, and he has to exert less effort, precisely because of the fact that a firmer and more effective grip is possible. Now it is possible the harpoon with an effort and to load a fatigue smaller than those previously needed.

On the other hand, it is possible in industrial processes, thanks to the acting only in a single direction jig, which is provided according to the invention, easily reposition the point of attack of the device on the object, since the movement is carried out in the new positioning just in the direction in which the acting only in a single direction jig is not effective. The claimed in claim 2 feature claims an embodiment of the device according to the invention, which is particularly reliable. Namely, the envisaged pair of clamping elements enables that selective clamping acting only in a single direction, which is the basis of the inventive idea of the present invention.

The feature claimed in claim 3 claims an embodiment of the pair of clamping elements claimed in claim 2. The feature claimed in claim 4 claims a possible shape of the curved surface having elements claimed in claim 3. If the single-directional jig provided for the device according to the invention has the feature claimed in claim 5, a so-called self-clamping effect can be achieved, meaning that the pair of clamping elements always inclines automatically to move his effective position. This happens even if the item is not available. The claimed in claim 6 feature allows the To improve the function of the device according to the invention by placing it in the best operating conditions to pick up the object. The provided with this claim sling prevent namely, that in the absence of the object, the elements having a curved surface can move under the action of the spring force of the springs beyond their effective position.

The feature claimed in claim 7 makes it possible to increase the number of points of contact between the surface of the curved surface elements and the object. The diameter of the object is in fact, thanks to the annular grooves, in at least two places and not only at one point, as would be the case in the absence of the annular groove. The feature claimed in claim 8 facilitates insertion of the article between the curved surface elements when an annular groove is provided. Otherwise, the maximum span of the path of the curved surface elements to move from the operative position to the inoperative position and vice versa would be very large and to be able to do so would require a very large amount of rotation.

The features claimed in claim 9 allow a particular ease of use of the device according to the invention.

The feature claimed in claim 10 makes it possible to obtain a first embodiment of the device according to the invention. The device having this feature may be considered as a basic variant or standard variant thereof. The feature claimed in claim 11 makes it possible to obtain second embodiment of the device according to the invention. The turning capability introduced by this feature makes the device more versatile and more adaptable to the different sizes of objects to be handled. The feature claimed in claim 12 makes it possible to obtain a third embodiment of the device according to the invention by further improving the function. The fact that, as provided in the claim, the second frame is connected to the elements having a curved surface and is no longer connected to the first frame, allows the user to always exert an optimal pressure on the object. This feature makes it possible to act directly on the clamping force applied to the article by the curved surface elements when in their operative position. Due to the manual tension applied to the elements having a curved surface, namely, an additional lever effect is achieved due to deformation of the frame, so that the force transmitted by the elements having a curved surface is greater than that transmitted by a rigid frame would. The force exerted by the user on the device is transmitted almost entirely, with the exception of the frictional losses and the losses of the gears, to the elements having a curved surface in order to both rotate them to the operative position and above all to make them effective Positioning, which increases safety, as this further reduces the risk of losing grip on the object. The feature claimed in claim 13 claims an embodiment of acting only in a single direction Clamping device claimed in claim 16. The claimed in claim 14 feature relates to the particular and novel use of the device according to the invention when loading a harpoon, since in this area, the use of the device according to the invention enables the achievement of the above-mentioned significant advantages.

Further advantages and features will emerge more clearly from the following description of embodiments of the device according to the invention, which are explained purely by way of example and not in a restrictive manner on the basis of the attached drawings. In the drawings show:

1 shows the front view of a first embodiment of a device according to the invention which is in the operative position and has a clamping device acting only in a single direction,

2 is the rear view of the device of Figure 1, Figure 3 is the side view of the device of Figure 1, Figure 4 is the front view of the device of Figure 1, in an inoperative position,

5 shows the front view of a second embodiment of a device according to the invention, which is in the operative position and has a clamping device acting only in a single direction, Figure 6 is the rear view of the device of Figure 5, Figure 7 is the side view of the device of Figure 5, FIG 8 is the front view of the device of Figure 5, in an inoperative position, Figure 9 is a front view of a third embodiment of a device according to the invention, which is in the effective Position and has a acting only in a single direction jig,

9 is a side view of the device of FIG. 9, FIG. 12 is a front view of the device of FIG. 9, in an inoperative position, FIG.

Figure 13 is the bottom view of the device of Figure 9, Figures 14 e 15 are two front views of the first embodiment of the device of Figure 1 with two respective different preferred embodiments of the curved surface elements, Figures 16 e 17 are two front views 5, wherein there are two respective different preferred embodiments of the curved surface elements; FIGS. 18 e 19 are two front views of the third embodiment of the device of FIG. 9, with two respective different preferred embodiments of the one curved surface Figure 19a is a front view of the third embodiment of the apparatus of Figure 10, showing that embodiment of the curved surface elements shown in Figure 19, and wherein the one curved surface is shown in Figure 19a Figures 20, 20a-20d illustrate embodiments of the curved surface elements according to the embodiment shown in Figures 14, 16 and 18, Figures 21, 21a-20d illustrate embodiments of the invention curved surface having elements according to its embodiment, which is shown in Figures 15, 17,19 and 19a, Figure 22 is a perspective view of the upper part of a prior art harpoon,

Figure 23 is a partially sectional view of the harpoon of Figure 22, wherein the rod has been inserted into it and the device according to the invention, the second embodiment of her, mounted on the rod, Figure 24 is a partially sectional view of the harpoon Figure 22, wherein the rod has been inserted into it and the device according to the invention, the third embodiment of her, is mounted on the rod.

The figures, as previously indicated, schematically show three different embodiments of a device for firmly gripping a rod-shaped, rod-shaped, rope-shaped or similar article 1 extending through the device and for displacing it along a direction along which a counterforce acts opposes the displacement of the article 1.

The device comprises a clamping device 2, which clamps the object to be gripped 1 in its interior and with which it is possible to grasp the object 1.

According to the invention, the clamping device acts only in a single direction. By the term "in a single direction" is meant that the sliding of the acting only in a single direction jig 2 relative to the object 1 in the direction of action of the opposing force is allowed, while the sliding in the opposite direction of action of the opposing force prevents direction becomes.

As can be clearly seen in particular from the figures, the clamping device 2, which acts only in a single direction, comprises a pair of clamping elements 3 which are arranged laterally against one another, however are not stored in contact with each other. These clamping elements 3 are in an effective position, in which they clamp the object 1 between them and which has been shown, for example, in FIGS. 1, 2, 5, 6, 9 and 10, in a plurality of inoperative positions, of which FIG one in Figures 4, 8, 12 has been shown and in which they 3 do not touch the object 1, and vice versa, displaceable. The clamping of the article 1 in the operative position of the clamping elements 3 takes place in that in this position their mutual distance is a value h2, which is shown for example in Figures 1, 2, 5, 6, 9 and 10 and which is smaller than that Value hl, which is shown for example in Figures 4, 8, 12 and which corresponds to this mutual distance in any inoperative position of the device. To accomplish this, the chucking elements 3 may conveniently consist of a pair of curved surface elements 3 rotatably supported about respective axes of rotation A and from said operative position into said plurality of inoperative positions and vice versa. In the transition from one position to the other, the curved surface elements 3 always rotate at the same time, each around its own axis of rotation A, but each opposite to the other. In order to produce such a curved surface having elements 3, circular discs may be provided, each having an axis of rotation A, which is not arranged in alignment with its own geometric center, as has been shown in the figures, in which with a and b in each case the largest and the smallest radius have been indicated, which are arranged on the same diameter. Alternatively, it is also conceivable that the elements are 3 discs with elliptical shape or another shape with variable radius. In addition, the surface of the curved surface having elements 3 may be suitably knurled to increase the friction between the surface of the elements 3 and the object 1. Alternatively or additionally, it is also conceivable that an application of a friction material is applied to the surface of the elements 3. Note, finally, that a possible sliding of the device according to the invention, and thus acting only in a single direction jig 2, along the article 1 in the direction of action of the opposing force, thanks to the friction, the clamping elements 3 requires to take an inactive position, such as those For example, in Figures 4, 8, 12 are shown.

With 4 springs were specified. The spring force of these tension springs 4 tends to rotate the curved surface having elements 3 in their operative position. The presence of these tension springs 4 makes it possible to have an automatic self-clamping effect of the clamping device 2 acting only in a single direction.

The clamping direction 2, which acts only in a single direction, also comprises stop means 5, which can be seen, for example, in FIGS. 2, 4 and 6. In this way, the curved surface elements 3 are prevented from rotating from an inoperative position to the operative position beyond the operative position.

In the figures, 6 gears were indicated, which are each assigned to a curved surface having an element. They serve the rotations of the two elements. 3 synchronize each other and each of them rotates together with the associated element 3, since they mesh 6 with each rotation of the elements 3 into each other. In Figures 20, 20a-20d and 21, 21a-21d, two further different embodiments of the curved surface having elements 3 are shown. Both embodiments provide for the presence of an annular groove 3a having a different shape according to the different illustrated embodiments. In addition, in the case of the second embodiment shown in Figs. 21, 21a-21d, the removal of a small piece of material from the edge of the annular groove 3a is provided. The presence of the annular groove 3a makes it possible to increase the number of points of contact between the article 1 and the curved surface having elements 3, while the removal of material, by facilitating the insertion of the article 1 between the elements 3, the close of the Elements 3 and reducing the size of the associated necessary rotations to move from the inoperative position to the operative position allows, as will be explained below.

As already indicated, the device according to the invention, thanks to the provided only in a single direction acting jig 2, the object 1 no longer needs to take with his bare hands. For this purpose, it further comprises a handle 7. In addition, the handle 7 on its side facing away from the elements 3, a blind hole 13. FIGS. 1-4 show a first embodiment of the device according to the invention. It is simpler than the other two embodiments built later be explained.

In this first embodiment, the jig 2 acting only in a single direction has a frame 2c on which the curved surface elements 3, the gears 6 and the handle 7 are supported. In the region of the handle 7, this frame 2c has such a curved course extending away from the plane of rotation of the elements 3 that the handle 7 does not disturb the object 1. To turn the elements 3 from their operative position to one of their inoperative positions, they must be rotated 3 against the spring force of the tension springs 4. For this purpose, the user will act by hand on the opening levers 11, which are connected to the elements 3, and bring them from the position shown in Figure 1 in the position shown in Figure 4. This entails a corresponding rotation of the curved surface having elements 3, so that the mutual removal of the elements 3 is a value hl which is greater than h2. The value hl will of course be greater than the diameter of the article 1. As soon as the external action of the user stops on the opening levers 11, under the action of the tension springs 4, the device resumes its shape as shown in FIG. 4, in which the elements 3 are in their operative position. FIGS. 5-8 show a second embodiment of the device according to the invention. It is predominantly constructed like the first embodiment already described. The difference between the two embodiments is that, in the case of this second embodiment of the device according to the invention, the frame of the clamping direction 2 acting in only one direction is in two parts. He has a first frame 2d, on which the curved surface having elements 3 and the gears 6 are mounted, and a second frame 2e, on which the handle 7 is mounted, on. The second frame 2e is rotatably connected to an axis of rotation B on the first frame 2d, and the axis of rotation B is parallel to the plane of rotation of the elements 3. Finally, Figs. 9-13 show a third embodiment of the device according to the invention which is more complicated than the other two former embodiments. In this third embodiment, the clamping direction 2 acting only in a single direction has a first frame 2a and a second frame 2b. On the first non-deformable frame 2a, the curved surface having elements 3 and the gears 6 are mounted, while on the second frame 2b, the handle 7 is arranged.

The second frame 2b is partially deformable to accommodate the size of the rotations made by the curved surface elements 3. It is also connected to the curved surface having elements 3 and is rotatably mounted about a rotation axis C around, wherein the rotation axis C is parallel to the plane of rotation of the elements 3. More specifically, the second partially deformable frame 2b, having a curved-surface member 3, connecting means 8, for example, a screw as shown in the above-mentioned Figs. 9-13, has for connecting to the one curved surface member 3, and a first arm 9 and a second arm 10. The first arm 9 is rotatably supported on the connecting means 8 around the axis of rotation C, while the second arm 10 is supported at one first end on said first arm 9 and at the other End in rotatably, about respective axes of rotation D, E around, is mounted on the remaining part of the second frame 2b, wherein the axes of rotation D, E are perpendicular to the axis of rotation C. In order to rotate the curved surface having elements 3 from its operative position to one of its inoperative positions, the user no longer has to act on the opening levers 11, which are not provided in this embodiment, but on a handle 12. This handle 12 is shown in FIGS. 9-12. It is attached to the first frame 2a, whereby by pulling the handle in the direction of the handle 7, the first frame 2a moves relative to the second frame 2b. The curved surface having elements 3 which are mounted on the frame 2a and which are also connected to the second frame 2b, thus forced to rotate and the device goes from the shape shown in Figure 9 in the figure 12th illustrated shape in which the elements 3 are in an inoperative position. This entails a corresponding rotation of the curved surface having elements 3, so that the mutual removal of the elements 3 is a value hl, which is greater than h2. The value hl will of course be greater than the diameter of the article 1. As soon as the external action of the user ceases on the handle 12, under the action of the tension springs 4, the device resumes its shape as shown in FIG. 9, in which the elements 3 are in their operative position.

In the following, the operation of the device according to the invention is explained due to its use to load a harpoon. Such a harpoon is shown in FIG. 22 and indicates one end of an opening 21 which forms the mouth of the harpoon. The harpoon includes a container 22 and a barrel 23. The container 22 contains a pressurized fluid, usually compressed air, while the barrel 23 is at least partially disposed within the container 22 so as to be in fluid communication therewith. The fluid can thus flow from the container 22 into the barrel 23. The barrel 23 leads to the mouth 21. The mouth 21 is usually arranged on an end piece 21a, which can be attached to the other components of the harpoon, for example screwed.

In FIG. 22, one then recognizes a piston 24, which is arranged to slide along the longitudinal axis of the barrel 23. In more detail, when the harpoon is fired, the piston 24 slides from a home position (not shown in Figure 22), in which it is held in place by blocking means 27, 24 to an end position (not shown in Figure 22). , which is located near the mouth 21. Finally, 25 has a rod which is provided at its one end with a tip 26 and with its other end in loading the harpoon in the mouth 21 is inserted, as will be explained later.

The piston 24 is subjected to a pressure in the direction of the mouth 21 which is exerted by the fluid under pressure and flowing from the container 22 into the barrel 23. By being disposed between the pressurized fluid and the orifice 21, the piston 24 within the barrel 23 defines a type of expansion chamber of the pressurized fluid, the chamber consisting of the barrel portion 23 located below the piston 24. Due to the pressure effect the pressurized him Fluid transfers reach the piston 24 abruptly its end position as soon as, because of the shooting, the blocking means 27 release the piston. When loading is the movement that performs the piston 24, the opposite movement of the one that he performs when shooting. During loading, therefore, the piston slides from its end position to its starting position. The piston 24 is brought into its initial position due to the sliding action exerted on it from outside by the user and via the rod 24. This is done by the user, after he has inserted the rod 25 with its end without a tip 26 in the mouth 21, the rod presses against the piston 24 and removes it more and more of the mouth 21. By continuing this action, the piston 24 will reach its home position, in which the blocking means 27 act to hold the piston 24. The harpoon is now ready for firing and throwing the rod 25 out of the mouth 21 out. In this position, there is virtually no expansion chamber and the pressurized fluid is therefore exposed to its greatest compression and will exert on the piston 24 its greatest force, this force is absorbed by the blocking means 27 of the harpoon. In order to press the rod 25 against the piston 24 and to combat and overcome the opposing force exerted by the fluid under pressure, the device according to the invention is used, as shown for example in Figures 23 and 24, in which the device according to the invention on the pole 25 of the harpoon was attached.

FIG. 23 shows the second embodiment of the device according to the invention, but what will be explained below also applies to the first embodiment which is very similar to the second one.

In order to mount the device according to the invention on the rod 25, the procedure is as follows. First, one has to turn the curved surface elements 3 from their operative position to one of their inoperative positions. At this point, the user will act by hand on the opening levers 11 to bring the device in the configuration shown in Figs. 4 and 8 and then insert the rod 25 between the curved surface elements 3 , Thereafter, the user will release the opening levers 11 again and the rod 25 will be clamped immediately between the elements 3, since under the action of the tension springs 4 they will assume their operative position, which is shown in FIGS. 1 and 5. The user can now, by grasping the handle 7, powerfully push the rod 25 against the piston 24. If a single pushing action should not be sufficient to return the piston 24 to its initial position, the user will, with one hand, slide the device up onto the bar 25 while holding the bar 25 with the other hand. Sliding in this direction is allowed by the single-directional jig 2. Then, after positioning the device at the new point of attack, the user will resume pulling on the handle 7 to further push the rod 25 against the piston 24. In this case, the device according to the invention, in particular acting only in a single direction jig 2, automatically returns to its operative position. If then the last distance to be covered must be shorter than the distance between the handle 7 and the one Curved surface having elements 3, the user can insert the upper end of the rod 25 in the blind hole 13. After the piston 24 has been pressed in its initial position and has been blocked by the locking means 27 of the harpoon, the user will, for the last time to act on the opening levers 11 to remove the device to bring the 3 in an inoperative position that Removal of the device from the rod 25 allows. In contrast, FIG. 24 illustrates the third embodiment of the device according to the invention, for which the procedure is identical, as described with respect to FIG. 23, which relates to the first two embodiments of the device according to the invention. The only difference is that in order to place the device on the bar 25 during loading and to remove it later from the bar at the end of loading, and thus around the curved surface elements 3 from its operative position to one of its ineffective Turning positions, the user no longer has to act on the opening levers 11 but on the handle 12.

If the curved surface having elements 3 should have the annular groove 3a and the removal of material from an edge of the annular groove 3a, one will use the rod 25 between the elements 3 just in the region of this ablation, as shown in Figure 19a was, since in the region of this ablation the insertion is facilitated and the value hl of the mutual distance between the two elements 3 may thus have a size which is comparable to that of the diameter of the rod 25.

Claims

PATENT APPLICATIONS

A device for firmly gripping a rod-shaped, rod-shaped, rope-shaped or similar article (1) extending therethrough and for displacing it along a direction along which a counterforce acts which opposes the displacement of the article, the device a clamping device (2) which clamps the object to be grasped (1) in its interior, characterized in that the clamping device (2) acts in only one direction, namely the sliding of the clamping device acting only in a single direction (FIG. 2) relative to the object (1) in the direction of action of the opposing force, while the sliding is prevented in the opposite direction of action of the counter-force.

2. Apparatus according to claim 1, characterized in that the acting only in a single direction clamping direction (2) comprises a pair of clamping elements (3) which are arranged laterally but not standing in contact with each other and from an operative position, in the they (3) clamp the object (1) between them, into a plurality of inactive positions in which they (3) do not touch the object (1), and vice versa, are displaceable.

A device according to claim 2, characterized in that the pair of clamping elements (3) consists of a pair of curved surface elements (3) rotatable about respective axes of rotation (A) and from said operative position into said plurality from inoperative positions and vice versa, are stored, wherein in the transition from one position to the other, the curved surface having elements (3) always rotate simultaneously, each around its own axis of rotation (A) around, but each opposite to the other.

4. The device according to claim 3, characterized in that the curved surface having elements (3) are circular discs, each of which has an axis of rotation (A), which is not arranged in alignment with its own geometric center.

5. Device according to one of claims 3 or 4, characterized in that the force acting only in a single direction clamping direction (2) further comprises tension springs (4) whose spring force tends to have a curved surface having elements (3) in its operative position to turn.

6. Device according to one of claims 3 to 5, characterized in that acting only in a single direction

Clamping direction (2) further comprises stop means (5) which prevent the rotation of the curved surface having a member (3) from an inactive position to the operative position further rotation thereof (3) beyond the operative position.

7. Device according to one of claims 3 to 6, characterized in that the curved surface having elements (3) have an annular groove (3a).

8. Device according to claim 7, characterized in that from a rim of the annular groove (3a) a small piece of material is removed therefrom.

9. Device according to one of claims 3 to 8, characterized in that acting only in a single direction clamping direction (2) has a handle (7) which on its side facing away from the elements (3) has a blind hole (13) ,

10. Device according to one of claims 3 to 9, characterized in that acting only in a single direction clamping direction (2) has a frame (2c) on which the curved surface having a surface elements (3), the gears (6 ) and the handle (7) are mounted and in the region of the handle (7) such a curved from the plane of rotation of the elements (3) removing course that the handle (7) does not interfere with the object (1).

11. Device according to one of claims 3 to 9, characterized in that acting only in a single direction

Clamping direction (2) a first frame (2d) on which the curved surface having elements (3) and the gears (6) are mounted, and a second frame (2e) on which the handle (7) is mounted, has wherein said second frame (2e) is rotatably connected to the first frame (2d) about a rotation axis (B) and the rotation axis (B) is parallel to the plane of rotation of the elements (3).

12. Device according to one of claims 3 to 9, characterized in that acting only in a single direction Clamping direction (2) a first non-deformable frame (2a) on which the curved surface having elements (3) and the gears (6) are mounted, and a second frame (2b), adapted to adapt to the size of the a curved surface having elements (3), partially deformable and on which the handle (7) is mounted, said second frame (2b) being rotatable about a rotation axis (C) around the one curved surface having elements (3) is connected and the axis of rotation (C) parallel to the plane of rotation of the elements (3).

A device according to claim 12, characterized in that, for each element (3) having a curved surface, the second partially deformable frame (2b) has connecting means (8) for connecting to the curved surface element (3), a first arm (3). 9) rotatably supported on the connecting means (8) about the axis of rotation (C) and a second arm (10) supported at one of its first ends on said first arm (9) and at its other End in rotatable manner, about respective axes of rotation (D, E) around, on the remaining part of the second frame (2b) is mounted, wherein the axes of rotation (D, E) are perpendicular to the axis of rotation (C).

14. Use of a device according to one of claims 1 to 13 for loading a harpoon, characterized in that the object to be gripped (1) is the rod (25) of a harpoon, which at its one end with a tip (26). is provided and with its other end in the mouth (21) of the harpoon hineinsteckbar.