Coupling block element for a kenter shackle, formed from two half elements which can be pushed into one another, for anchor chains

Abstract

A coupling block element (20) for a Kenter shackle, formed from two half elements which can be pushed into one another, for anchor chains, wherein the half elements each have one short limb with a profile structure at the end and one long limb with a receiving chamber therefor, and the coupling block element can be inserted between the half elements which are pushed into one another, and wherein: - the coupling block element (20) has a housing (21) which is profiled on its side surfaces, which are to face the half elements, for positively locking guidance on the half elements; – at least one locking element (22) which can be displaced in a locking element guide bore (21.2) and the ends (22.2) of which, which exit to the outside, are configured for engaging in locking element receptacles on the inner flanks of the half elements is arranged on each of the opposite sides of the main body (21), – the two locking elements (22) can be displaced to the outside by means of a common expansion element which engages between the locking elements (22); wherein the expansion element is formed by an eccentric bolt (24) which is arranged rotatably in a central bore (21.1), oriented at a right angle with respect to the locking element guide bores (21.2) of the locking elements (22), in the housing (21), and which has an non-round cross section at least in a region which adjoins the locking element guide bores (21.2) of the locking elements (22).

Description

[0001] Coupling block element for a Kenter shackle for anchor chains formed from two nestable half-elements. The invention relates to a coupling block element for a Kenter shackle for anchor chains formed from two nestable half-elements. A generic coupling block element is known from WO2017 / 186236A1. The coupling block element inserted between the half-elements is reliably locked by the two locking elements that can be moved in opposite directions. A disadvantage is that the expansion element is secured by a thread in the housing. To assemble the coupling block element, the expansion element must first be screwed into the housing by numerous rotations, which is time-consuming and strenuous given the dimensions of such Kenter shackles and the tools required for this. If the thread, for example,If the coupling stone element becomes stuck under the influence of sand and sea water, non-destructive disassembly of the coupling stone element is no longer possible. The object of the invention is therefore to facilitate assembly and disassembly of the coupling stone element and to make it less susceptible to corrosion. This object is achieved by a coupling stone element with the features of claim 1. The advantage is that to lock and unlock the locking elements, the eccentric bolt only needs to be turned by a maximum of 180°, in particular only by 90°. During locking, the base bodies of the locking elements, which are rounded on the inside, are moved away from the eccentric surfaces on the eccentric bolt and brought into contact with the cylindrical outer surface of the eccentric bolt. This pushes the locking elements outwards and at the same time secures them in a form-fitting manner.To unlock, the reverse movement occurs: the eccentric bolt is rotated, and the locking elements, supported by inserted springs, can move from the outer casing back onto the eccentric surfaces. Additionally, the eccentric bolt can be secured once it has been moved into the desired position. Securing the locking position of the locking elements in the coupling block element is particularly important to permanently secure the assembled shackle. Securing can be achieved, for example, with a nut that is placed on a threaded shoulder at the end of the eccentric bolt and clamps the eccentric bolt axially against the housing of the coupling block element, thus securing it with friction.According to another embodiment, the central bore is designed as a blind hole, and the eccentric bolt can be pushed into the central bore in an inserted position against the force of at least one spring element. This has the advantage that one side of the eccentric bolt no longer needs to be sealed against the housing and that the eccentric bolt is not permanently connected to its securing element due to corrosion. Rather, the spring element in the blind hole, in particular a spring element positioned at the base of the blind hole, ensures that the eccentric bolt is pushed out of the blind hole after it has been rotated into the unlocked position. An advantageous embodiment provides two parallel eccentric surfaces on the eccentric bolt, which are arranged at the same distance from the axis of rotation.This means that both locking elements are moved simultaneously and, if they are the same length, reach their receptacles on the half-elements of the capstan shackle at the same time. Alternatively, the eccentric surfaces can be tilted towards each other or arranged concavely or convexly. This allows simple sequencing of the movement of the locking elements to be achieved. With the same rotation of the eccentric bolt, one locking element is extended earlier and reaches its receptacle earlier than the other. This can be advantageous because one locking element is then already aligned by engaging in its corresponding recess on the shackle, while the other is still moving towards its receptacle. If the locking elements become damaged due to corrosion or something similar.have become stuck in their bores, this design is also advantageous because the entire torque applied to the eccentric bolt acts sequentially on only one locking element, and the resulting forces are not divided between two locking elements. A complete capsize shackle for anchor chains is obtained by inserting a coupling block element according to the invention between two nestable half-elements, each with a short leg with a profile structure at the end and a long leg with a receiving chamber for it. Such a capsize shackle has the same curves on both sides and can therefore pass through an anchor winch like a chain link. The coupling block element of the invention can also be part of an anchor capsize shackle, which also comprises two nestable half-elements, each with a short leg with a profile structure at the end and a long leg with a receiving chamber for it.An anchor capsize shackle has different curves on both sides. One side forms the end of a chain and is therefore adapted to the curves of the chain links. The other side, which serves as the connection to an anchor, is less curved, but slightly pointed, and has a smaller eye. The coupling block element is inserted between the half elements at a right angle to the joining direction of the half elements, so that they can no longer come apart. On the one hand, the coupling block element is positively connected to the half elements via the locking elements. On the other hand, it is advantageous to additionally profile the two opposite inner flanks of the half elements, between which the coupling block element is inserted, and the adjacent outer sides of the coupling block element in order to achieve a positive guide. For this purpose, for example,It should be provided that raised surfaces are formed on projections on the inner flanks and complementary recesses are formed on the coupling stone element. As a result, the coupling stone element is guided in a form-fitting manner on the edges of the projections and, in its intended end position between the legs, blocks any relative movement between the two half-elements. In order to counteract the penetration of sand, salt water or organisms such as barnacles and to prevent the eccentric bolt from becoming stuck due to the effects of such factors, it is provided in particular that both the eccentric bolt and the locking elements are each sealed off from the housing by at least one sealing ring. A further preferred embodiment provides for the central bore in the housing to be designed as a blind hole and the eccentric bolt to be designed accordingly short. This means that there is only one large opening in the housing for the eccentric bolt.Furthermore, there is no longer any need for axially securing the eccentric bolt on the outside of the housing by means of a nut or the like placed on the end, which is therefore susceptible to corrosion. In order to axially secure the eccentric bolt in this variant, it is preloaded by at least one spring element acting between the eccentric bolt and the housing, preferably in such a way that it tends to be pushed out of the housing. At the same time, this embodiment provides at least one locking element projecting radially from the eccentric bolt, which engages in a locking guide slot formed on the edge of the central bore of the housing. For the rotational movements required for locking and unlocking, the locking element is guided in an arcuate groove of the locking guide slot, with the eccentric bolt also being axially secured.It is preferably provided that the axial preload is used by means of the at least one spring to axially advance the locking element out of the groove in the end positions provided for locking and unlocking, so that the locking element engages in a pocket connected to the groove in each of these positions. For the next movement, the eccentric bolt must then first be pushed axially into the housing against the force of the spring before it can be rotated again. For inserting the eccentric bolt designed in this way, a bolt insertion opening is provided which extends axially from a housing end face, at which the head of the eccentric bolt can be positioned, into the housing interior and there opens into the arcuate groove of the bolt guide slot. The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings. The figures show in detail: Fig.1 shows a disassembled Kenter shackle according to a first embodiment in a perspective view; Fig. 2 shows a coupling block element in a perspective exploded view; Fig. 3 shows the coupling block element from above; Fig. 4 shows the coupling block element from the front; Fig. 5 shows the locking position of the coupling block element in a perspective view; Fig. 6 shows the receptacle for the head of the eccentric bolt in an enlarged detail from Fig. 5; Fig. 7 shows the coupling block element in the unlocking position in a perspective view; Fig. 8 shows the unlocking position in a sectional view; Fig. 9 shows the locking position in a sectional view; Fig. 10 shows an assembled Kenter shackle with the coupling block element in longitudinal section; Fig. 11 shows a locking system of a second embodiment of a coupling block element, in a perspective view; Fig. 12 shows the locking system according to Fig. 11 in cross section;13 shows a perspective longitudinal section through the second embodiment of the coupling block element in the unlocked position; Fig. 14 shows a perspective longitudinal section through the second embodiment of the coupling block element in the locked position; Fig. 15 shows the coupling block element according to Fig. 14 in a perspective view from the outside; Fig. 16 shows the coupling block element according to Figs. 14 and 15 in a partially sectioned perspective view; Fig. 17 shows a longitudinal section through the coupling block element in the locked position; and Fig. 18 shows a cross-section through the coupling block element in the locked position. Figure 1 shows a perspective view of a disassembled Kenter shackle 100, which consists of two nestable half-elements 10 and a coupling block element 20. The half-elements 10 have the shape of a "J" in side view.Each half-element 10 has a short leg 11, at the end of which a profile structure 13 with bead-like projections and recesses located between them is formed, and a long leg 12 that extends below the profile structure 13 of the short leg 11. As the illustration of a half-element 10 on the left edge of the image shows, a receiving chamber 14 for the profile structure 13 of the other, short leg 11 is incorporated into the long leg 12. The convex profile structure 13 on the outside of the short leg 11 and a complementary, concave profile structure on the inside of the receiving chamber 14 of the long leg 12 are designed in such a way that the short leg 11 can be inserted into the receiving chamber 14 from the side. The insertion direction is indicated in Figure 1 by the block arrows. The half elements 10 pushed into each other form a closed shackle body with an oval basic shape.The legs 11, 12 are not entirely flat on their inner flanks 18, but have a slightly raised surface 15 there. The surfaces 15 on the opposite legs 11, 12 are plane-parallel. To prevent the two nested half-elements 10 from becoming detached from one another again, a coupling block element 20 is inserted between them. This is inserted between the half-elements 10 at a right angle to the direction indicated by the block arrows. It is guided in a form-fitting manner along edges 16 of the projections 15. To secure the coupling block element 20 in the end position, locking elements with a hemispherical end 22.1 are pressed out of a housing of the coupling block element 20. The ends 22.1 engage in locking element receptacles 17 on the inner surfaces of the half-elements 10.The coupling block element 20 is thus secured against displacement and is also positively secured between the half-elements 10 in the third dimension. The locking element receptacles 17 are split in half in the exemplary embodiment, as they are each formed in the edge region at the transition between the projection 15 and the receiving chamber 14 on the long leg 12 and at the transition between the projection 15 and the profile structure 13 on the short leg 11. Figure 2 shows the coupling block element 20 in a perspective exploded view. A locking element 22 is inserted into each of two locking element guide bores 21.2 of the housing 21, the hemispherical projection 22.1 of which points outwards. Cover disks 23 are connected to the housing 21, through whose central bore the projection 22.1 can be pushed out and on which a base body 22.2 of the locking element 22, which has a larger diameter, is held back in a positively locking manner. Around the projections 20.1 outward beyond the cover disks 23, an eccentric bolt 24 is inserted into a central bore 21.1, which runs transversely to the axis of the locking elements 20 and the locking element guide bores 21.2. The eccentric bolt 24 has, in a central longitudinal section, two parallel contact surfaces 24.2, 24.3, which are recessed and flattened relative to the outer circumference and against which the locking elements 22 rest when the projections 22.1 are retracted. Springs 26, designed here as disc springs, are provided to press the locking elements 22 away from the cover disk 23 and to hold them in contact with the contact surfaces 24.2, 24.3 on the eccentric bolt 24. The base bodies 22.2 of the locking elements 22 are spherically rounded on their side facing the eccentric bolt 24 and the edges between the cylindrical casing of the eccentric bolt 24 and the contact surfaces 24.2, 24.3 are bevelled or also rounded so that the locking elements 22 do not catch in the area of ​​the edges when the eccentric bolt 24 rotates. The eccentric bolt 24 has a head 24.1 with a projection 24.4, on which, for example, a wrench can be applied, and a projecting collar as a locking element 29, which extends over less than 180° of the circumference. On the other side of the housing 21, the eccentric bolt 24 is secured with a nut 25. On the opposite sides, where the locking elements 22 emerge, the housing 21 has a recess 21.3 which is bordered on two sides by parallel edges and is openly accessible on two further opposite sides, so that at these points the coupling block element 20 can be pushed onto the projections 15 on the half elements 15. Figure 3 shows the coupling stone element 20 from the top. The recess 21.3 serves to accommodate the projections 15 on the half-elements. The cover disk 23 is screwed to the housing 21 using several screws. The projection 22.1 of the locking element can protrude outwards through a hole therein. The locking elements and cover disks 23 are each arranged with an offset to an axis of symmetry S2 of the housing 21. Figure 4 shows the coupling block element 20 in a front view. Both projections 22.1 are moved outwards and protrude beyond the surface of the recess 21.3. In this view, the heads 22.1 of the locking elements are arranged on an axis of symmetry S1 of the housing 21. The head 24.1 of the eccentric element 24 is countersunk in a receptacle 27 in the housing 21. Figures 5 and 7 each show the coupling block element 20 in a perspective view. Figure 5 shows the locking position in which the hemispherical projections 22.1 of the locking elements are extended and protrude from the cover plate 23.On the left, an enlargement of a receptacle 27 in the housing 21 for the head 24.1 of the eccentric bolt is shown. The locking element 29 on the head 24.1 is positioned in a concealed groove in the receptacle 27. Figure 6 shows the receptacle 27 in the housing 21 in an enlarged detail. The receptacle 27 is formed between the opening of the central bore 21.1 and the outside of the housing 21. The upper part of the receptacle 27 is wider than the lower part, so that the locking element 29 (see Fig. 5) of the eccentric bolt can only be inserted from above. The lower part is limited by two stop edges 27.1, 27.2. Starting from the stop edge 27.1, an arcuate groove 27.3 extends along the inner circumference of the holder 27. However, the groove 27.3 does not extend completely below the stop edge 27.2. Due to this shape of the groove 27.3 and the design of the locking element on the head of the eccentric bolt ensures that the eccentric bolt can be held positively on the receptacle. The eccentric bolt is not only axially secured when its locking element engages in the groove 27.3, but is also restricted in rotation. This is advantageous in order to be able to mount a nut on the other side of the housing 21 for additional security on the eccentric bolt, even in unfavorable assembly situations, without having to counter-hold the head on the eccentric bolt. Figure 7 shows the coupling block element 20 in the unlocked position in a further perspective view. The heads 22.1 of the locking elements are retracted into the housing 21. The locking element 29 is located in the exposed part of the receptacle 27. The function of the coupling block element 20 according to the invention is explained using the sectional views in Figures 8 and 9. Figure 8 shows the unlocking position.A spring 26, designed as a compression spring, in particular as a disc compression spring, is arranged between the cover plate 23 and a base body 22.2 of the locking element 22. The eccentric pin 24 is rotated such that the locking elements 22 can engage the free spaces on the contact surfaces 24.2, 24.3 due to the force of the springs 26. As a result, the hemispherical projection 22.1 retracts to below the surface of the recess 21.3 on the housing 21. The coupling block element 20 can be inserted in this position as soon as the half elements 10 of the Kenter shackle 100 are assembled. The locking element 29 of the head 24.1 lies outside the groove 27.3 in the receptacle 27. However, the eccentric bolt 24 is axially secured by the fact that the base bodies 22.2 are engaged in the recesses at the contact surfaces 24.2, 24.3. To rotate the eccentric bolt 24, the nut 25 must first be slightly loosened.After inserting the coupling block element 20 into its final position between the half-elements of the Kenter shackle, the eccentric bolt 24 is rotated by at least 90°, but less than 180°, whereby the locking elements 22 are displaced in their bores and the projections 22.1 protrude outward so that they engage in associated receptacles on the inner flanks of the half-elements 10. This locking position is shown in Figure 9. The locking element 29 of the head 24.1 engages the groove 27.3 in the receptacle 27. Although in this position the base bodies 22.2 of the locking elements 22 rest against the cylindrical part of the outer casing of the eccentric bolt 24 and there is no longer any positive engagement between them, the eccentric bolt 24 is axially secured by the engagement of the locking element 29 in the groove 27.3. The nut 25 is retightened to prevent unintentional rotation of the eccentric bolt 24.Figure 10 shows a fully assembled Kenter shackle 100 in section, wherein the cutting plane is parallel to the longitudinal axis, but offset outwards therefrom in order to intersect one of the two locking elements 22 in the coupling block element 20. The two half-elements 10 engage with each other in a form-fitting manner, in that the profile structures 13 on the respective short legs 11 engage with the receiving chambers 14 on the long legs 12. The two mutually facing inner flanks 17 on the shackle body formed from the connected half-elements 10 merge at the edges 16 into the raised surface 15, which is formed jointly by both half-elements 11. A locking element receptacle 17 is formed exactly at the parting plane between the half-elements 10. The coupling block element 20 is inserted between the inner flanks 18. In the longitudinal direction, it is fixed in a form-fitting manner by the edges 16. Transversely to this it is through the engagement of the projections 22.1 secured in the locking element receptacles 17. Figure 11 shows a locking system as part of a second embodiment of a coupling block element, which can be inserted between two half elements 11 in exactly the same way as previously described with reference to Figure 10 to form a capstan shackle. The locking system also comprises an eccentric bolt 24' and two locking elements 22'. The eccentric bolt 24' has a head 24.1' with an enlarged diameter and two eccentric bolt sections 24.2', 24.5', over which the two locking elements 22' are axially displaceable. Different from the first embodiment is that the head 24.1' has at least one groove 24.8' on the outer circumference for receiving at least one sealing ring and is shorter overall. At one end opposite the head 24.1', it has an end shoulder 24.9', which is intended for positioning a front-end spring element. The end shoulder 24.9' is designed to be short so that the entire eccentric bolt 24' can be accommodated in a blind hole in a housing. The eccentric bolt sections 24.2', 24.5' are strongly rounded before they transition into contact surfaces 24.3', 24.6', on which the rounded end regions of the locking elements 22' are supported when the unlocking position of the coupling block element is set. Additional shoulders 24.4', 24.7', together with the end shoulder 24.9', serve to mount the eccentric bolt 24' in the housing. A locking element 29' is molded or attached into the shoulder 24.7' behind the head 24.1'. This engages with a locking guide slot in the housing to limit the rotation angle of the eccentric bolt 24' and / or to positively secure the eccentric bolt in the intended end positions. The locking elements 22' each have projections 22.1', each with a groove 22.3' for receiving a sealing ring, and an end section 22.2' with a diameter that is larger than the diameter of the projections 22.1'. Figure 12 shows a cross-section through the locking system previously shown in Figure 11. This particularly clearly shows the position of the eccentric bolt sections 24.5' in relation to the rotation axis of the eccentric bolt 24' and how their cross-sectional shape, which deviates from the circular shape indicated by the dash-dotted line, was designed. It is also visible that the spherically shaped ends of the locking elements 22' are flattened in the center. In the unlocking position shown in Figure 12, in which the locking elements 22' are located completely inside the housing, the locking elements 22' each rest with the flattened area on the flat contact surface 24.6'. Figure 13 shows a longitudinal section through the housing 21' of the coupling stone element 20' in the unlocked position.A spring 26' is attached to a shoulder on each of the locking elements 22', with which the locking element 22' is pushed off the cover plate 23' and maintains contact with the respective eccentric bolt section 24.2', 24.5'. A sealing ring 22.4' is inserted into each of the grooves 22.3'. A central bore 21.1' in the housing 21' ends in a section designed as a blind hole. The end section 24.9' of the eccentric bolt 24' is mounted there and supported on the housing 21' via a spring 28' or a set of springs. This makes it possible, on the one hand, to have the head 24.1' flush with the outside of the housing 21'. On the other hand, a permanent preload of the eccentric bolt 24' in the direction of the opening of the central bore 21.1' is specified.In the illustrated embodiment, the possible movements of the eccentric bolt 24' relative to the housing 21' are positively fixed by the eccentric bolt 24' being guided via its locking element 29' and a locking guide slot 27' formed in the housing 21'. Figure 14 shows a representation analogous to Figure 13, with the difference that the eccentric bolt 24' has been rotated by approximately 90°, so that the locking elements 22' have been pushed outward via the eccentric bolt sections 24.2', 24.5' and are now in the locking position, with their heads projecting beyond the cover plates 23'. In the perspective view of the coupling block element 20' in the locking position in Figure 15, it can be seen that, on the one hand, the eccentric bolt with its head 24.1' is flush with the side surface of the housing 21' and, on the other hand, that a bolt insertion opening 27.1' is provided in order to be able to guide the locking element 29', visible in Figure 13, from the front side of the housing 21' into the internal locking receptacle. The locking insertion opening 27.1' is closed in a watertight manner after the eccentric bolt 24' has been inserted into the housing 21'. This can be done using a rubber plug and / or a grease filling. Figure 16 shows an illustration in which the housing 21' is sectioned but shown as a transparent body, so that the contour of the central bore 21.1' is visible and the axial locking of the eccentric bolt 24' relative to the housing 21' can be shown. The locking element guide bores 21.2' are also clearly visible. The eccentric bolt 24' is already inserted into the central bore 21.1' in the illustration in Figure 16. The central bore 21.1' has an initial section 21.5' with an enlarged diameter in which the head 24.1' of the eccentric bolt 24' is received.This initial section 21.5' is extended over part of its circumference by a circular or arcuate groove 27.3'. The locking insertion opening 27.1' opens into the groove 27.3', through which the locking element 29' is inserted when the eccentric bolt 24' is inserted into the housing 21'. Two short pockets 27.2', 27.3' extend from the groove 27.3' toward the front of the housing 21', but end well before that. Their axial extent is selected to be only large enough to allow the locking element 29' of the eccentric bolt 24' to be slid just out of the groove 27.3' and into one of the pockets 27.2', 27.3'. From the illustration in Figure 16 it also follows that the eccentric bolt 24' with its locking element 29' can be inserted into the housing 21' via the locking insertion opening 27.1'.To do this, the cover plates must first be removed from the housing 21' so that the springs 26' on the locking elements 22' are released and the locking elements 22' can be moved outwards. Before the eccentric bolt is inserted, the spring 28' is placed on its end shoulder, which constantly pushes the eccentric bolt out of the central bore 21.1', which is designed as a blind hole, towards the opening of the central bore 21.1'. To insert the eccentric bolt into the housing, it must be pushed into the housing against the force of the spring 28' and is then slightly rotated, whereby the locking element engages the groove 27.3' and from then on axially secures the eccentric bolt during further movement. The locking elements 22' can engage again in the eccentric bolt sections 24.2', 24.5' (see Figure 13) after the eccentric bolt has been inserted into the housing.They are preloaded by replacing the cover disks 23 (see Figure 15) and screwing them back on. This secures the eccentric bolt via the locking elements 22' and prevents it from escaping from the housing, even if the locking element 29' is moved into position in front of the bolt insertion opening 27.1'. During normal use, the eccentric bolt is only moved back and forth between the end positions defined by the pockets 27.2', 27.4' for the unlocking and locking positions. To do this, the eccentric bolt must be moved axially into the housing interior against the force of the spring 28' in order to disengage the locking element 29' from the respective pocket 27.1', 27.4' and move it into the groove 27.3'. A rotation of approximately a quarter circle can then be performed. Finally, the locking element 29' moves into the other pocket 27.1', 27.4' due to the preload by the spring 28'.From the longitudinal section through the coupling block element 20' in Figure 17, it is clear that the diameter of the end sections 22.2' of the locking elements 22' in relation to the axial length of the eccentric bolt sections 24.2', 24.5' is dimensioned such that an axial displacement path X is still available after the eccentric bolt 24' has been inserted into the housing and the locking elements 22' engage with the eccentric bolt sections 24.2', 24.5'. This displacement path X makes it possible for the locking element 29' to be moved out of the pocket 27.1'2' into the groove 27.3', so that the eccentric bolt 24' can be rotated by approximately 90° into the other end position. Figure 18 is a perspective cross-section through the coupling block element 20'. The front side of the housing 21', which has the opening for receiving the head 24.1' of the eccentric bolt 24', is hidden at the rear in this view.The cutting plane runs through the bolt guide slot 27' for the bolt element 29', whereby the bolt guide slot 27' comprises: - the bolt insertion opening 27.1 - two pockets 27.2', 27.4' and - the groove 27.3' As can be seen from this illustration, the groove 27.3' must extend as a circular arc at least between the bolt insertion opening 27.1 and the pocket 27.4'.

[0002] Reference numerals: 100 Kenter shackle 10 half elements 11 short leg 12 long leg 13 profile structure 14 receiving chamber 15 raised surface 16 edge 17 locking element receptacle 20; 20' coupling block element 21; 21' housing 21.1; 21.1' central bore 21.2; 21.2' locking element guide bore 21.3; 21.3' recess on the housing 21.5' initial section 22; 22' locking elements 22.1, 22.1' projections 22.2; 22.2' base body 22.3' groove 22.4' sealing ring 23; 23' Cover plate 24 Eccentric bolt 24.1 Head 24.2, 24.3 Contact surfaces 24.4 Projection Eccentric bolt head Eccentric bolt sections Contact surfaces Bearing shoulders Groove End section 25 Nut 26; 26' Springs 27 Receptacle 27.1, 27.2 Stop edges 27.3 Groove 27' Bolt guide slot 27.1' Bolt insertion opening 27.2' Pocket 27.3 Groove 27.5' Pocket 28' Spring 29, 29' Bolt element S1, S2 Symmetry axes X Displacement path

Claims

VBP 001 WO A5 [24DQP0938371-Behmer] Patent claims:

1. Coupling block element (20; 20') for a Kenter shackle (100) for anchor chains formed from two half elements (10) which can be pushed into one another, wherein the half elements (10) each have a short leg with a profile structure (13) at the end and a long leg with a receiving chamber (14) therefor and the coupling block element (20; 20') can be inserted between the half elements (10) which are pushed into one another, and wherein: - the coupling block element (20; 20') has a housing (21; 21') which is profiled on its side surfaces to be assigned to the half elements (10) for the form-fitting guidance on the half elements (10); - on opposite sides of the housing (21; 21') at least one locking element (22; 22') is arranged which is displaceable in a locking element guide bore (21.2; 21.2'), the outwardly projecting ends (22.2) are designed to engage in locking element receptacles (17) on the inner flanks (18) of the half-elements (10), - both locking elements (22; 22') are displaceable outwards by means of a common expansion element engaging between the locking elements (22; 22'); characterized in that the expansion element is formed by an eccentric bolt (24; 24') which is rotatably arranged in a central bore (21.1; 21.1') in the housing (21; 21') aligned transversely to the locking element guide bores (21.2; 21.2') of the locking elements (22; 22') and which has a non-circular cross-section at least in an area adjacent to the locking element guide bores (21.2; 21.2') of the locking elements (22; 22').

2. Coupling stone element (20; 20') according to claim 1, characterized in that the non-circular cross-sectional area has at least one flat contact surface (24.2, 24.3) for the abutment of the blocking element (22; 22') in a. VBP 001 WO A5 [24DQP0938371-Behmer] in the open position and / or in a closed position of the locking elements (22; 22').

3. Coupling block element (20; 20') according to one of claims 1 to 3, characterized in that the eccentric bolt (24; 24') has a head (24.1) with a non-circular circumference, which is positively secured against rotation in a compatible, countersunk receptacle (27; 27') in a side surface of the housing (21; 21').

4. Coupling block element (20; 20') according to one of the preceding claims, characterized in that the central axis of the eccentric bolt (24; 24'), the locking element guide bores (21.2; 21.2'), and the locking elements (22; 22') are arranged on a first axis of symmetry (S1) of the housing (21; 21').

5. Coupling block element (20; 20') according to one of the preceding claims, characterized in that the locking element guide bores (21.2; 21.2') and the locking elements (22; 22') are arranged vertically in the central bore (21.1; 21.1') of the eccentric bolt (24; 24') and are arranged axially offset from one another and from a second axis of symmetry (S2).

6. Coupling block element (20; 20') according to one of the preceding claims, characterized in that a countersunk receptacle (27) for the head (24.1; 24.1') of the eccentric bolt (24; 24') is formed on the housing (21; 21') at the opening of the central bore (21.1; 21.1').

7. Coupling block element (20; 20') according to claim 6, characterized in that on the head (24.1; 24.1') of the eccentric bolt (24; 24') there is arranged a locking element (29; 29') which projects radially beyond a shoulder on the eccentric bolt (24; 24') and which engages in a locking guide slot (27.3; 27.3') on the receptacle (27) for the head (24.1; 24.1'). VBP 001 WO A5 [24DQP0938371-Behmer] 8. Coupling block element (20; 20') according to claim 9, characterized in that the eccentric bolt (24; 24') is secured axially in the central bore (21.1; 21.1') via the engagement of the locking element (29; 29') in the groove (27.3; 27.3') and / or via the locking elements (22; 22') engaged in the recesses on the eccentric bolt (24; 24') at the contact surfaces (24.2, 24.3; 24.3', 24.6').

9. Coupling block element (20') according to one of the preceding claims, characterized in that the central bore (21.1') is designed as a blind hole, and that the eccentric bolt (24') can be inserted into the central bore (21.1') against the force of at least one spring element (28'). 10.Capstan shackle (100) or anchor capstan shackle for anchor chains, comprising at least two nestable half-elements (10), each with a short leg (11) with a profile structure (13) at the end and a long leg (12) with a receiving chamber (14) therefor, wherein locking element receptacles (17) are formed on the inner flanks (18) of the half-elements (10), and a coupling block element (20; 20') according to one of the preceding claims, inserted between the nested half-elements (10).

11. A capstan shackle (100) or anchor capstan shackle according to claim 12, characterized in that the housing (21; 21') of the coupling block element (20; 20') has projections or recesses (21.3; 21.3') on its side surfaces facing the half-elements (10) for positive guidance on complementarily formed inner flanks (18) of the half-elements (10).

12. A capstan shackle (100) according to claim 10 or 11, characterized in that the projections (22.1; 22.1') of the locking elements (22; 22') are each spherically convex and the locking element receptacles (17) are each spherically concave. VBP 001 WO A5 [24DQP0938371-Behmer] 13. Kenter shackle (100) according to one of claims 10 to 12, characterized in that - the legs (11, 12) each have a raised surface (15) on their inner flanks (18), - the surfaces (15) on the opposite legs (11, 12) are plane-parallel, - the coupling block element (20; 20') is positively connected between the half-elements by its recesses (21.3; 21.3') and the edges (16) of the surfaces (15) as well as by the hemispherical projections (22.1; 22.1') ​​of the locking elements (22; 22'), which engage in locking element receptacles (17) on the inner surfaces of the half-elements (10). (10).

14. Coupling block element (20; 20') according to one of the preceding claims 10 to 13, characterized in that the blocking element receptacles (17) are split in half and are each provided in the edge region at the transition between the raised surface (15) and the receiving chamber (14) on the long leg (12) orat the transition between the raised surface (15) and the profile structure (13) on the short leg (11).

Images