WO2014194502A1

WO2014194502A1 - Pin-locking type mooring anchor chain balancing weight

Info

Publication number: WO2014194502A1
Application number: PCT/CN2013/076841
Authority: WO
Inventors: 金琦
Original assignee: Jin Qi
Priority date: 2013-06-06
Filing date: 2013-06-06
Publication date: 2014-12-11

Abstract

Disclosed is a pin-locking type mooring anchor chain balancing weight, comprising two partitioned block bodies (11, 12) which are oppositely arranged, wherein the opposite surfaces of the two partitioned block bodies (11, 12) are provided with an anchor chain groove (2) in an axial direction, two bonding surfaces (3) are formed at both sides of an opening on the anchor chain groove (2), each bonding surface (3) is provided with at least one locking lug (4) thereon, the locking lug (4) is provided with a through hole (5) thereon in the axial direction, the locking lugs (4) on the mutually corresponding bonding surfaces (3) of the two partitioned block bodies (11, 12) are alternately arranged in sequence in an alignment mode in the axial direction and form locking lug groups arranged in the axial direction, the through holes (5) in the locking lugs (4) of each row of the locking lug groups are communicated in sequence in the axial direction to form a locking through hole, and the two partitioned block bodies (11, 12) are locked and fixed by a locking pin (6) penetrating through the locking through hole. The rigidity of a mooring leg system is increased, the security and reliability are improved, and the service life is long.

Description

Pin lock type mooring anchor chain weight

Technical field

The present invention relates to a counterweight, and more particularly to a pin lock type mooring anchor chain weight mounted on a mooring line of a marine floating structure mooring leg on the seabed or near the seabed to provide a mooring system Resilience and increase the stiffness of the mooring leg system. Background technique

At present, as shown in Fig. 1, the existing mooring anchor chain weight 100 is composed of two identical arched bodies 101 and a plurality of compression bolts 102. The middle of the bottom of the arched body 101 has a concave structure for placing a link of the anchor chain 6; the two sides of the concave structure are the joint faces of the bottom of the arched body 101, parallel to the geometrical axis of the anchor chain legs, and the two sides are combined There are bolt holes on the surface for the compression bolts 102 to pass through. The compression bolt 102 is perpendicular to the joint surface (in other words, perpendicular to the geometric axis of the anchor leg). The two arched bodies 101 are closed from the upper and lower sides of the link, and the chain ring is enclosed in the middle of the weight. The two arched bodies 101 are pressed by the contact of the joint surfaces by the plurality of pressing bolts 102. In one piece, the installation of the weight 100 on the anchor chain 10 is completed.

In addition, some weights are additionally provided with a central compression bolt 103 parallel to the plurality of compression bolts 102, and the central compression bolt 103 penetrates the central space of the chain ring from the center of the top of the two arched bodies 101. Further, the weights are provided with positioning pins 104 parallel to the pressing bolts 102 on the above two joint faces to prevent slippage and misalignment of the two joint faces. The body 101 of the weight 100 is typically cast from grey cast iron.

In use, the float will produce 6 degrees of freedom due to the effects of wind and waves. Under severe sea conditions, the counterweights with floating platform legs on the seabed and nearby will be repeatedly lifted off the seabed and then slammed into the seabed, and the counterweights are thus subjected to impact loads. Therefore, the existing weights often suffer from the problem of breakage and loss of the weight during the production operation of the floating body. This is because the existing weight 100 has the following two structural defects: First, the weight 100 is pressed by the compression bolt 102 and the central compression bolt 103 perpendicular to the joint surface of the two bodies 101. Connect as a whole. Although the locking bolts are applied to the nuts of the connecting bolts, and even the bolts and nuts are welded together, under the combined impact load and large tension, the nuts are inevitably loosened and detached from the bolt heads, eventually resulting in two The block body 101 is separated, causing the weight 100 to fall off the anchor chain 6, reducing the safety and reliability of use.

Secondly, in order to press the two bodies 101, the pressing bolt 102 and the central pressing bolt 103 usually have a large pre-tension applied, so that the screw hole of the body 101 corresponding to the bolt is correspondingly subjected to a large inner portion. stress. Once There is a defect in the quality of the casting near the screw hole. Under the combined action of the impact load and the above internal stress, the casting is prone to local fracture, breakage and shedding, which affects the use effect and service life of the weight, and will eventually lead to the distribution. The weight 100 is detached from the anchor chain 6. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a pin-lock type mooring anchor chain weight which can increase the rigidity of the mooring leg system, greatly improve safety and reliability, and prolong the service life.

In order to solve the above technical problem, the present invention provides a pin lock type mooring anchor chain weight, comprising two oppositely disposed body bodies, and an anchor chain is axially opened on opposite sides of the two block body a groove, a link for placing the anchor chain; two joint faces are formed on both sides of the opening of the anchor chain groove, and at least one locking protrusion is provided on each of the joint faces; a through hole is arranged on the axial direction of the axial direction of the anchor chain; when the two partial bodies are butted, the locking protrusions on the corresponding joint surfaces are sequentially staggered in the axial direction Arranging, engaging with each other, and forming a locking protrusion group arranged along the axial direction; the through holes on the locking protrusions of each row of the locking protrusion groups are sequentially connected in the axial direction to form a locking through hole, The two-part body is locked by a locking pin penetrating the locking through-hole; the locking protrusion, the locking through-hole and the locking pin together form a pin-locking structure of the mooring chain weight The two block bodies are stably mounted on the anchor chain by the two pin lock structures. Said locking pin were fixed to the locking of said through hole.

The pin lock type mooring anchor chain weight as described above, wherein an optimized form is that the two block bodies are a first block and a second block, on one side of the first block a middle portion of the joint surface is provided with a first middle locking lug, and two first end locking lugs are provided at two ends of the joint surface of the other side of the first block; correspondingly, Two ends of the joint surface of the second block are provided with two second end locking lugs, and a second middle lock is disposed at a middle of the joint surface of the other side of the second block. a first convex locking protrusion is engaged between the two locking lugs of the second end portion, and the second middle locking convex portion is engaged between the two locking body blocks The block is fitted between the two locking lugs of the first end.

The pin lock type mooring anchor chain weight as described above, wherein the corresponding faces of the adjacent locking projections in the locking cam group are tightly coupled.

The pin lock type mooring anchor chain weight as described above, wherein the locking pin is a locking bolt.

a pin-lock type mooring anchor chain weight as described above, wherein a centrally located position on the oppositely disposed two-piece body is provided with a vertically-mounted through-hole through a vertical direction in the axial direction, in the mounting slot A central positioning pin is fixed throughout. The pin lock type mooring anchor chain weight as described above, wherein the center positioning pin is a center positioning bolt. The pin lock type mooring anchor chain weight as described above, wherein the locking projection has a rectangular parallelepiped shape or a square shape or a regular quadrangular prism shape.

Compared with the prior art, the present invention has the following features and advantages:

1. Since the two segments of the present invention are fixed by two pin locks instead of relying on the bolt tensioning force, the two segments are pressed and fixed, so that the weight of the present invention is pulled and then hits the seabed. The impact load of the locking pin is mainly shearing force, and the tension is small. As long as the conventional anti-loose measures are taken, the nut will not loosen; as long as the locking pin and the lug have sufficient strength and are not broken. , the pin lock structure will not work.

2. The center locating pin of the present invention extends from the center of the top of the two segmented bodies and passes through the central space of the link placed in the chain of the chain and is fastened by a nut fit. The center locating pin has a positioning function, and at the same time further strengthens the pressing force between the two block bodies, which is the second line of defense for ensuring the reliability of the weight block of the present invention.

The weight of the present invention is based on the above two features. Only when one pin lock structure fails and the nut of the center pin is loosened simultaneously, it is possible for the two block bodies of the weight of the present invention to separate and fall off. Therefore, the safety reliability and life of the weight of the present invention are much higher than those of the prior art. DRAWINGS

The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. In addition, the shapes, proportions, and the like of the components in the drawings are merely illustrative and are used to help the understanding of the present invention, and do not specifically limit the shapes and proportions of the components of the present invention. Those skilled in the art, in light of the teachings of the present invention, may choose various possible shapes and ratios to implement the present invention.

1 is a schematic perspective view of a conventional weight block;

2 is a schematic perspective view showing the structure of a pin lock type mooring anchor chain weight according to the present invention;

Figure 3 is a side view showing the structure of the A direction of Figure 2;

4 is a schematic exploded view of the pin lock type mooring anchor chain weight according to the present invention.

Description of the reference signs:

current technology:

100- mooring anchor chain weight; 101-arch body; 102-compression bolt; 103-center compression bolt; 104-positioning pin.

this invention:

10-anchor chain; 1-weighted block; 11-first block; 12-second block; 2-chain chain slot; 3-bonding surface; 4-locking Bump; 411 - first middle locking lug; 412 - first end locking lug; 421 - second middle locking lug; 422 - second end locking lug; 5-through hole ( Locking through hole); 6-locking pin (locking bolt); 7-nut; 8-mounting slot; 9-center positioning pin. detailed description

The details of the present invention can be more clearly understood from the description of the drawings and the description of the invention. However, the specific embodiments of the invention described herein are intended to be illustrative only and not to be construed as limiting the invention. Those skilled in the art can devise any possible variations based on the present invention, which are considered to be within the scope of the present invention.

Please refer to FIG. 2 to FIG. 4 , which are respectively schematic perspective views of the pin lock type mooring anchor chain weight according to the present invention; FIG. 2 is a side view structural view of the A direction; and the exploded structure diagram of the present invention. As shown in the figure, the pin lock type mooring anchor chain weight 1 provided by the present invention comprises two opposite block bodies, that is, a first block 11 and a second block 12; as shown in FIG. 4, the first The middle portion of the opposite faces of the block 11 and the second block 12 is axially opened with an anchor chain groove 2 for placing a link of the anchor chain 10; opening on the anchor chain groove 2 of each block body Two joint faces 3 are formed on both sides, and at least one locking projection 4 is disposed on each joint face 3, and a through hole 5- is disposed in the axial direction on the lock bump 4. When the two blocks are docked, on the joint surface of the first block 11 and the second block 12 corresponding to each other (that is, on the same side butt joint surface of the first block 11 and the second block 12) The locking projections 4 are sequentially staggered and aligned in the axial direction, and form a locking projection group arranged in the axial direction (as shown in FIG. 2), each group comprising at least two convex blocks; each row of locking convex blocks The through holes on the locking projections 4 of the group are sequentially connected in parallel with the axial direction parallel to the geometrical axis of the anchor chain to form a locking through hole, and the first block 11 and the second block 12 are penetrated by the two through the locking Through holes and parallel locking pins are locked. The locking projection 4, the locking through hole 5 and the locking pin 6 together constitute a pin lock structure of the mooring anchor chain weight. The two block bodies 11, 12 are securely mounted on the chain 10 by two pin lock structures, and the lock pins 6 are fixed in the lock through holes 5. In this embodiment, the locking pin is a locking bolt 6, and a nut 7 is screwed on the protruding end of the locking bolt 6 (as shown in FIG. 3). After the nut is tightened, the locking pin can be fixed to the lock. In the through hole, the first block 11 and the second block 12 can be clamped and locked. In short, the two sub-blocks 11, 12 of the present invention are locked and fixed by providing the locking projections 4 which can be engaged with each other, and the locking pins 6 penetrating through the through-holes 5 of the locking projections 4. The following advantages are concentrated later.

As an optional embodiment of the present invention, as shown in FIG. 4, a first middle locking protrusion 411 is disposed in a middle portion of a joint surface of one side of the first block 11, and the first block 11 is Two ends of the joint face of the other side are provided with two first end locking projections 412; correspondingly, two second ends are provided at both ends of the joint face of one side of the second block 12 The locking protrusion 422 is provided with a second middle locking protrusion in the middle of the joint surface of the other side of the second block 12 421. When the two blocks are butted, the first middle locking protrusion 411 is fitted between the two second end locking protrusions 422 to form an axially arranged first locking protrusion group, and the second middle locking The protrusion 421 is fitted between the two first end locking protrusions 412 to form an axially arranged second locking protrusion group. The locking pin 6 is inserted through the two locking lug sets respectively to achieve the locking and fixing of the first block 11 and the second block 12. In the present invention, two or more locking protrusions spaced apart on each bonding surface of each of the block bodies can be provided, as long as the locking protrusions on the corresponding bonding faces of the two-block body can be sequentially The staggered arrangement and the formation of a continuous set of locking lugs in the axial direction is sufficient. The present invention does not limit the number of locking projections.

Further, in order to constrain the tendency of the two segment bodies 11, 12 to slide along the locking pin 6, the present invention is provided with a vertical connection perpendicular to the axial direction at a central position on the oppositely disposed two-piece bodies 11, 12. The slot 8 is mounted, and a center positioning pin 9 is inserted and fixed in the mounting slot 8. The center locating pin 9 runs through the center of the top of the two block bodies 11, 12 and passes through the central space of the link placed in the chain slot 2 and is fastened by a nut fit. The center locating pin 9 has a positioning function while further reinforcing the pressing force between the two block bodies, but the center locating pin 9 of the present invention produces a pressing force that is much smaller than the center of the existing weight block 100. The pressing force generated by the bolt 103 is pressed. In the present invention, the center positioning pin 9 is a center positioning bolt and is screwed with the nut.

Further, in the present invention, the locking projection 4 has a rectangular parallelepiped shape, but the present invention is not limited thereto, and the locking projection 4 may be designed in a geometric shape such as a square shape or a regular quadrangular shape as needed.

The invention adds a keyhole bump 4 on the joint surface on both sides of the block body. When the two block bodies 11, 12 are mounted on the anchor chain 6, "close" from the upper and lower sides of the chain ring, through the two pins The lock structure is fixed: the lock hole projections 4 of the two block bodies 11 and 12 are misaligned and engaged with each other, and the through holes on the adjacent lock hole protrusions 4 have the same inner diameter and the central axis coincides to ensure the smooth locking bolts. Through the locking through hole. Two locking bolts 6 pass through the locking projections 4 from both sides of the weight 1 and are screwed and fixed with the nuts, so that the two blocking bodies 11, 12 are locked as a whole and cannot be separated. Therefore, the weight of the present invention completely overcomes the shortcomings of the existing weights. In the process of being pulled and then hitting the seabed, the pin lock structure of the present invention fails only when one of the following three conditions occurs: 1) Nut 7 Loosening causes the locking pin 6 to fall out of the locking through hole, 2) the locking pin 6 is sheared, and 3) the locking projection 4 is completely broken. Since the impact load of the locking pin 6 is mainly shearing force, the tensioning force is small, and the nut 7 and the locking pin 6 are not loosened as long as the conventional anti-loose measures are taken; as long as the locking pin 6 and the locking pin 6 are secured The bump 4 has sufficient strength and is not broken, and the pin lock structure failure cannot occur.

The central positioning pin 9 of the present invention penetrates from the center of the tops of the two segment bodies 11, 12 and passes through the central space of the link placed in the anchor chain groove, and is fastened by a nut fit, which is the weight of the present invention. The second "defense line" of block reliability. In addition, in the process of installing the weight to the anchor chain of the present invention, the two block bodies 11, 12 are pre-tensioned. The load is not large, and the protection of the block body is very advantageous.

Based on the above characteristics, the reliability of the weight of the present invention is mainly ensured by the pin lock structure rather than by a large bolt tension. Only when one pin lock structure fails and the nut of the center pin is loosened simultaneously, it is possible for the two block bodies 11, 12 of the weight of the present invention to separate and fall off. Therefore, the safety reliability and life of the weight of the present invention are much higher than those of the prior art.

The detailed description of the various embodiments described above is intended to be illustrative of the present invention in order to provide a better understanding of the present invention, but these descriptions are not to be construed as limiting the invention in any way, particularly, in different The various features described in the embodiments can also be arbitrarily combined with each other to form other embodiments, and the features are to be understood as being applicable to any one embodiment, and not limited to the described embodiments. the way.

Claims

claims

1. A pin lock type mooring anchor chain weight block, including two block bodies arranged oppositely, with anchor chain grooves axially opened on the opposite surfaces of the two block bodies, and in the anchor chain grooves Two joint surfaces are formed on both sides of the upper opening, and the characteristic is that at least one locking bump is provided on each joint surface; on the locking bump, the axial direction is parallel to the geometric axis of the anchor chain. A through hole is provided. When the two block bodies are butted together, the locking bumps on the corresponding joining surfaces are arranged in staggered positions along the axial direction, engage with each other, and form locking arrangements arranged along the axial direction. Bump group; The through-holes on the locking bumps of each row of the locking block group are connected in sequence along the axial direction to form a locking through-hole, and the two-block body is passed through a lock that penetrates the locking through-hole. Locking with a locking pin; The locking bump, the locking through hole and the locking pin together constitute the pin lock structure of the mooring anchor chain weight block, and the two block bodies are locked by the two pins The structure is firmly installed on the anchor chain, and the locking pin is fixed in the locking through hole.

2. The pin lock type mooring anchor chain weight block according to claim 1, characterized in that the two-block body is a first block and a second block, and one of the first blocks is A first middle locking bump is provided in the middle of the joining surface on one side, and two first end locking bumps are provided on both ends of the joining surface on the other side of the first block; accordingly, Two second end locking protrusions are provided at both ends of the joining surface on one side of the second block, and a second end locking bump is provided in the middle of the joining surface on the other side of the second block. Middle locking bump; When the two block bodies are butted, the first middle locking bump is fitted between the two second end locking bumps, and the second middle locking bump is The bump is fitted between the two first end locking bumps.

3. The pin lock type mooring anchor chain weight block according to claim 1, characterized in that the corresponding surfaces of adjacent locking convex blocks in the locking convex group are closely connected.

4. The pin lock type mooring anchor chain weight block according to any one of claims 1 to 3, characterized in that the locking pin is a locking bolt.

5. The pin-lock type mooring anchor chain weight block as claimed in claim 1, characterized in that an installation slot hole extending up and down is opened at the center position of the two oppositely arranged two-block bodies perpendicular to the axial direction. A center positioning pin is fixed through the installation slot hole.

6. The pin lock type mooring anchor chain weight block according to claim 5, characterized in that the center positioning pin is a center positioning bolt.

7. The pin lock type mooring anchor chain weight block according to claim 1, characterized in that the locking convex block is in the shape of a rectangular parallelepiped, a cube, or a square pyramid.