CN110094411B

CN110094411B - Single-point mooring yoke joint structure capable of replacing bearing on sea

Info

Publication number: CN110094411B
Application number: CN201910335619.0A
Authority: CN
Inventors: 李剑; 董海防; 朱刚; 李光明; 李慧; 尧白莲; 李婉婉
Original assignee: 719th Research Institute of CSIC
Current assignee: 719th Research Institute of CSIC
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-07-03
Anticipated expiration: 2039-04-24
Also published as: CN110094411A

Abstract

The invention discloses a single-point mooring yoke joint structure capable of replacing a bearing on the sea, which comprises a nose cone, wherein the lower end of the nose cone is provided with an inner ring, the upper surface of the inner ring, the outer side surface and the lower surface are respectively provided with an upper outer ring and a middle outer ring, the lower surface of the upper outer ring is contacted with the inner ring through an upper ring lining plate, the upper outer ring is fixedly connected with the middle outer ring through a bolt, the inner surface of the middle outer ring is stepped, the vertical surface of an inner step is contacted with the outer side surface of the inner ring through a side lining plate, the horizontal plane of the inner step is contacted with the lower surface of the inner ring through a lower ring lining plate, the middle outer ring is fixedly connected with the lower outer ring through a bolt, the center of the lower outer ring is provided with a ring platform groove, the lower end center of the nose cone is provided with an auxiliary bearing seat, the outer ring of the auxiliary. The invention solves the problem that the yoke hinged joint roll bearing is difficult to replace at sea.

Description

Single-point mooring yoke joint structure capable of replacing bearing on sea

Technical Field

The invention relates to the technical field of offshore platform single-point mooring, in particular to a single-point mooring yoke joint structure capable of replacing a bearing at sea.

Background

The single point mooring system can moor a ship in an operating sea area, has a wind vane effect and can enable the ship to rotate and swing around the single point mooring. The yoke joint is a part for connecting the mooring rigid arm and the rotating tower in the single-point mooring system, has two rotational degrees of freedom while transferring mooring force, and comprises two bearings for controlling the roll and pitch of the mooring rigid arm so as to adapt to the roll and pitch motions of the ship body under various loads such as wind, wave, flow, ice and the like.

Wherein, the yoke articulated joint roll bearing is used for releasing the roll freedom degree of the mooring rigid arm and swings along with the roll of the mooring rigid arm. In the case of the existing single point mooring, the yoke joint roll bearing has two forms of a turntable bearing and a self-lubricating bearing, wherein the single point mooring designed by SBM company is in the form of a turntable bearing, and the single point mooring designed by sofcs company is in the form of a self-lubricating bearing. However, in any case, once the bearing is damaged, the mooring steel arm must be lifted away, and the yoke joint is detached to replace the bearing. The replacing method is complex, high cost is needed, the operation days for mooring the ship can be reduced, and certain economic loss is caused.

Considering that the single point mooring system needs to be in service at sea for many years, the yoke articulated joint roll bearing also needs to work at sea for a long time, and the bearing is difficult to replace once damaged. Therefore, it is necessary to design a single point mooring yoke joint structure with replaceable bearings at sea so that the roll bearing can be replaced during the normal operation of the moored vessel.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a single-point mooring yoke joint structure capable of replacing a bearing at sea, and solves the problem that the yoke joint roll bearing is difficult to replace at sea.

In order to achieve the purpose, the single point mooring yoke hinging head structure capable of replacing the bearing at sea comprises a nose cone, wherein the lower end of the nose cone is provided with an inner ring, and the single point mooring yoke hinging head structure is characterized in that the upper surface, the outer side surface and the lower surface of the inner ring are respectively provided with an upper outer ring and a middle outer ring, the lower surface of the upper outer ring is contacted with the inner ring through an upper ring lining plate, the upper outer ring is fixedly connected with the middle outer ring through bolts, the inner surface of the middle outer ring is step-shaped, the vertical surface of an inner step is contacted with the outer side surface of the inner ring through a side lining plate, the horizontal surface of the inner step is contacted with the lower surface of the inner ring through a lower ring lining plate, the middle outer ring is fixedly connected with the lower outer ring through bolts, the center of the lower outer ring is provided, and the boss of the auxiliary bearing seat is embedded into the annular groove of the lower outer ring and is contacted with the annular groove through an auxiliary lining plate.

Furthermore, the inner ring is annular and is fixed on the periphery of the lower end of the nose cone through an inner ring bolt.

Furthermore, the upper outer ring is in a shape of two semi-rings and is respectively arranged above two sides of the inner ring, and an upper ring lining plate groove for placing an upper ring lining plate is formed in the inner side of the lower surface of the upper outer ring.

Furthermore, the middle outer ring is of a plurality of fan-shaped structures and is uniformly distributed on the periphery of the inner ring, a first load reduction groove is formed in the periphery of the upper surface of the middle outer ring, and a second load reduction protrusion is formed in the periphery of the lower surface of the middle outer ring.

Furthermore, the periphery of the lower surface of the upper outer ring is provided with a first load shedding protrusion, and the first load shedding protrusion is in butt fit with a first load shedding groove arranged on the middle outer ring.

Furthermore, the lower outer ring is circular, the center ring platform groove is small in upper portion and large in lower portion, and the edge of the center ring platform groove is stepped.

Furthermore, a second load reduction groove is formed in the edge of the upper surface of the lower outer ring, and the second load reduction groove is in grounding fit with a second load reduction bulge of the middle outer ring.

Furthermore, the auxiliary bearing seat is in a circular ring shape, the outer ring is a boss with a small upper part and a large lower part, and an auxiliary lining plate groove for placing an auxiliary lining plate is formed in the edge of the outer ring.

Furthermore, the upper ring lining plate, the lower ring lining plate and the auxiliary lining plate are all fan-shaped and are composed of a plurality of blocks and are evenly distributed along the circumferential direction, and the side lining plate is arc-shaped and is composed of a plurality of blocks and is evenly distributed along the axial outer ring of the inner ring.

Furthermore, the upper ring lining plate, the side lining plates, the lower ring lining plate and the auxiliary lining plate are self-lubricating bearings.

The invention provides a single point mooring yoke joint structure capable of replacing a bearing on the sea, wherein a rolling bearing of the structure is composed of three rows of lining plates made of self-lubricating materials and is provided with an auxiliary bearing. The axial force, the radial force and the overturning moment borne by the rolling bearing are borne by different lining plates respectively, so that the bearing capacity is high, and the maintenance is convenient. Compared with the prior art, the invention divides the bearing seat structure outer ring of the roll bearing into an upper section, a middle section and a lower section, decomposes the middle outer ring into a plurality of fan-shaped structural members, and adds the auxiliary bearing structure, so that the self-lubricating lining plate of the roll bearing can be replaced at sea, the problems of difficult and high replacement cost of the yoke hinged joint roll bearing at sea are solved, and the normal operation of a mooring ship is not influenced during the replacement.

Drawings

Fig. 1 is a cross-sectional view of a single point mooring yoke joint structure with a bearing replaceable at sea according to the present invention;

FIG. 2 is an enlarged view of the roll bearing of FIG. 1;

FIG. 3 is a cross-sectional view of section A-A of FIG. 1;

FIG. 4 is a view of FIG. 3 with a middle outer ring removed;

fig. 5 is a detail view of the inner ring 2;

fig. 6 is a part view of the upper outer ring 3;

fig. 7 is a detail view of the middle outer ring 4;

fig. 8 is a part view of the lower outer race 5;

fig. 9 is a part view of the auxiliary bearing housing 6;

in the figure: a nose cone 1; an inner ring 2; an upper outer ring 3; an upper ring liner plate groove 3.1; a first relief projection 3.2; a middle outer ring 4; a first load relief groove 4.1 and a second load relief protrusion 4.2; side lining plate grooves 4.3; a lower ring liner plate groove 4.4; a lower outer ring 5; the center is provided with a ring platform groove 5.1 and a second load shedding groove 5.2; an auxiliary bearing seat 6; 6.1 of a boss; an auxiliary lining plate groove 6.2; an auxiliary bearing block bolt 7; an inner ring bolt 8; an upper outer ring bolt 9; a middle outer ring bolt 10; an upper ring liner plate 11; side liners 12; a lower ring liner 13; an auxiliary lining plate 14; upper ring liner plate screws 15; side liner screws 16; lower ring liner plate screws 17; auxiliary backing plate screws 18.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments.

As shown in fig. 1, the single point mooring yoke joint structure capable of replacing a bearing at sea according to the present invention includes a nose cone 1, an inner ring 2, an upper outer ring 3, a middle outer ring 4, a lower outer ring 5, and an auxiliary bearing seat 6.

The lower end of the nose cone 1 is provided with an inner ring 2, the inner ring 2 is annular and is fixed on the periphery of the lower end of the nose cone 1 through an inner ring bolt 8. The upper surface, the outer side surface and the lower surface of the inner ring 2 are respectively provided with an upper outer ring 3 and a middle outer ring 4. The upper portion outer lane 3 is two semi-annular, sets up respectively in the both sides top of inner circle 2, and the lower surface inboard of upper portion outer lane 3 is equipped with the welt groove 3.1 of fitting with a contraceptive ring that is used for placing the welt 11 of fitting with a contraceptive ring. The lower surface of upper portion outer lane 3 contacts with inner circle 2 through fitting with a contraceptive ring welt 11, and the welt 11 of fitting with a contraceptive ring is fixed in upper portion outer lane 3 through fitting with a contraceptive ring welt screw 15, and upper portion outer lane 3 passes through upper portion outer lane bolt 9 and middle part outer lane 4 fixed connection. Middle part outer lane 4 is the fan-shaped structure of a plurality of, evenly distributed in the periphery of inner circle 2, and the internal surface of middle part outer lane 4 is the step type, and the perpendicular of inside step contacts with the lateral surface of inner circle 2 through the side welt 12 that sets up in side welt groove 4.3, and the horizontal plane of inside step contacts with the lower surface of inner circle 2 through the lower ring welt 13 that sets up in lower ring welt groove 4.4. The side lining plates 12 and the lower ring lining plate 13 are fixed to the middle outer ring 4 by side lining plate screws 16 and lower ring lining plate screws 17, respectively. The middle outer ring 4 is fixedly connected with the lower outer ring 5 through a middle outer ring bolt 10. The outer periphery of the upper surface of the middle outer ring 4 is provided with a first load shedding groove 4.1, and the outer periphery of the lower surface is provided with a second load shedding protrusion 4.2. First deloading groove 4.1 with set up in the protruding 3.2 butt cooperations of first deloading of 3 lower surface peripheries of upper portion outer lanes, the protruding 4.2 and the second deloading groove 5.2 butt cooperations that set up in the upper surface edge of lower part outer lane 5 of second deloading for the radial force that the transmission structure received.

The lower outer ring 5 is circular, the center is provided with a ring platform groove 5.1, the shape of the central ring platform groove 5.1 is small at the top and big at the bottom, and the edge of the central ring platform groove 5.1 forms a step shape. The center of the lower end of the nose cone 1 is provided with an auxiliary bearing seat 6. The auxiliary bearing seat 6 is in a ring shape, the outer ring is a boss 6.1 with a small upper part and a big lower part, and the edge of the outer ring is provided with an auxiliary lining plate groove 6.2 for placing an auxiliary lining plate 14. The auxiliary lining plate 14 is fixed to the auxiliary bearing housing 6 by means of auxiliary lining plate screws 18. The boss 6.1 of the auxiliary bearing seat 6 is embedded into the annular groove 5.1 of the lower outer ring 5 and is contacted with the auxiliary lining plate 14 arranged in the auxiliary lining plate groove 6.2. The auxiliary bearing block 6 is fixed with the nose cone 1 by an auxiliary bearing block bolt 7.

As shown in fig. 2 and 3, the upper ring liner 11, the side liner 12, the lower ring liner 13, and the auxiliary liner 14 are self-lubricating bearings. The upper ring lining plate 11, the lower ring lining plate 13 and the auxiliary lining plate 14 are all fan-shaped, the side lining plates 12 are arc-shaped, and the lining plates are all composed of a plurality of blocks and are evenly distributed along the circumferential direction.

The upper outer ring 3 is composed of two semi-rings, the middle outer ring 4 is divided into a plurality of fan-shaped structural members which are uniformly distributed along the circumferential direction and form a ring shape, and a plurality of side lining plates 12 and lower lining plates 13 are arranged on each structural member of the middle outer ring 4. The outer ends of the contact ring surfaces of the lower outer ring 5 and the middle outer ring 4 and the outer ends of the contact ring surfaces of the middle outer ring 4 and the upper outer ring 3 are provided with load reduction grooves for transmitting the radial force borne by the structure.

As shown in fig. 5, three outer surfaces of the inner ring 2 are respectively surfaces which rub against the upper ring liner 11, the side liner 12 and the lower ring liner 13, and need to be processed smoothly. As shown in fig. 6, the upper outer ring 3 is a semi-annular structure, and the lower end surface thereof is provided with an upper ring liner groove 3.1 and a threaded hole for mounting an upper ring liner 11. As shown in fig. 7, the middle outer ring 4 has a fan-shaped structure, and is provided with a side lining groove 4.3, a lower ring lining groove 4.4 and a threaded hole for mounting the side lining 12 and the lower ring lining 13, respectively, and a first relief groove 4.1 for transmitting a lateral force to the upper outer ring 3. As shown in fig. 8, the upper end surface of the lower outer ring 5 is provided with a second relief groove 5.2 for transmitting lateral force to the middle outer ring 4, and the inner lower end surface is a surface which is rubbed with the auxiliary lining plate 14 and needs to be processed smoothly. As shown in fig. 9, the outer upper end surface of the auxiliary bearing seat 6 is provided with an auxiliary lining plate groove 6.2 and a threaded hole for installing the auxiliary lining plate 14.

The self-lubricating lining plate is the part of the rolling bearing which is most easily damaged. When the self-lubricating lining plate is worn and needs to be replaced, the upper outer ring bolt 9 is firstly detached, the upper outer ring 3 is removed, and the upper ring lining plate 11 can be replaced at the moment. The upper outer ring 3 is designed into two semi-rings, so that the structural part can be conveniently taken down and replaced from the yoke hinged joint after being detached. After the upper ring liner 11 is removed, the auxiliary liner 14 is engaged with the lower ring liner 13 to bear the axial force and the overturning moment. One of the centre rings 4 and its corresponding centre ring bolt 10 is then removed and the respective parts of the side lining plate 12 and the lower ring lining plate 13 replaced, as shown in figure 4. And after the lining plate is replaced, the replaced middle outer ring 4 is installed again, and other parts of the middle outer ring 4 which are not replaced are replaced in sequence according to the steps. And after all parts of the middle outer ring 4 are completely replaced, the replaced upper outer ring 3 is installed again and fixed by the outer ring bolts 9, so that the replacement of all the upper ring lining plates 11, the side lining plates 12 and the lower ring lining plates 13 is completed.

The change of the rolling bearing needs to be carried out under the condition of good sea condition, the whole stress of the yoke joint is small and mainly pulled, the load is mainly concentrated on the upper ring lining plate 11 and the auxiliary lining plate 14, and the middle outer ring 4 is more favorably dismantled. The design of the rolling bearing needs to meet the stress requirement of the current working condition after a middle outer ring 4 is removed.

The auxiliary bearing seat 6 is mounted inside the roll bearing, and the auxiliary bearing seat 6 can be removed from the inside and the auxiliary lining plate 14 can be replaced. In the normal working state of the roll bearing, the auxiliary bearing seat 6 and the auxiliary lining plate 14 do not need to be installed.

The rolling bearing of the structure is composed of three rows of lining plates made of self-lubricating materials and is provided with an auxiliary bearing. The axial force, the radial force and the overturning moment borne by the rolling bearing are borne by different lining plates respectively, so that the bearing capacity is high, and the maintenance is convenient. Compared with the prior art, the invention divides the bearing seat structure outer ring of the roll bearing into an upper section, a middle section and a lower section, decomposes the middle outer ring into a plurality of fan-shaped structural members, and adds the auxiliary bearing structure, so that the self-lubricating lining plate of the roll bearing can be replaced at sea, the problems of difficult and high replacement cost of the yoke hinged joint roll bearing at sea are solved, and the normal operation of a mooring ship is not influenced during the replacement.

Finally, it should be noted that the above detailed description is only for illustrating the technical solution of the patent and not for limiting, although the patent is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the patent can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the patent, which should be covered by the claims of the patent.

Claims

1. The utility model provides a but single point mooring yoke body hinge joint structure of marine change bearing, includes nose cone (1), the lower extreme of nose cone (1) is provided with inner circle (2), its characterized in that: the upper surface, the outer side surface and the lower surface of the inner ring (2) are respectively provided with an upper outer ring (3) and a middle outer ring (4), the lower surface of the upper outer ring (3) is contacted with the inner ring (2) through an upper ring lining plate (11), the upper outer ring (3) is in two semi-rings and is respectively arranged above two sides of the inner ring (2), and an upper ring lining plate groove (3.1) for placing the upper ring lining plate (11) is arranged on the inner side of the lower surface of the upper outer ring (3); the upper outer ring (3) is fixedly connected with the middle outer ring (4) through bolts, the middle outer ring (4) is of a plurality of fan-shaped structures and is uniformly distributed on the periphery of the inner ring (2), a first load reduction groove (4.1) is formed in the periphery of the upper surface of the middle outer ring (4), and a second load reduction protrusion (4.2) is formed in the periphery of the lower surface of the middle outer ring (4); the inner surface of the middle outer ring (4) is stepped, the vertical surface of an inner step is contacted with the outer side surface of the inner ring (2) through a side lining plate (12), the horizontal surface of the inner step is contacted with the lower surface of the inner ring (2) through a lower ring lining plate (13), the middle outer ring (4) is fixedly connected with the lower outer ring (5) through a bolt, the center of the lower outer ring (5) is provided with a ring platform groove (5.1), the center of the lower end of the nose cone (1) is provided with an auxiliary bearing seat (6), the outer ring of the auxiliary bearing seat (6) is a boss (6.1), and the boss (6.1) of the auxiliary bearing seat (6) is embedded into the ring platform groove (5.1) of the lower outer ring (5) and is contacted through an auxiliary lining plate (; it is fan-shaped to go up ring liner board (11), lower ring liner board (13) and supplementary welt (14), comprises a plurality of blocks, along circumferencial direction evenly distributed, side welt (12) are the arc, comprise a plurality of blocks, along the axial outer lane evenly distributed of inner circle (2).

2. The single point mooring yoke joint structure with replaceable bearing at sea of claim 1, wherein: the inner ring (2) is annular and is fixed on the periphery of the lower end of the nose cone (1) through an inner ring bolt (8).

3. The single point mooring yoke joint structure with replaceable bearing at sea of claim 1, wherein: the outer ring of upper portion (3) lower surface periphery is equipped with first deloading protruding (3.2), first deloading protruding (3.2) with set up in the cooperation of the first deloading groove (4.1) butt of middle part outer lane (4).

4. The single point mooring yoke joint structure with replaceable bearing at sea of claim 1, wherein: the lower outer ring (5) is annular, the center ring platform groove (5.1) is small in upper portion and large in lower portion, and the edge of the center ring platform groove (5.1) forms a step shape.

5. The single point mooring yoke joint structure with replaceable bearing at sea of claim 1, wherein: and a second load reduction groove (5.2) is arranged at the edge of the upper surface of the lower outer ring (5), and the second load reduction groove (5.2) is in butt joint with a second load reduction bulge (4.2) of the middle outer ring (4).

6. The single point mooring yoke joint structure with replaceable bearing at sea of claim 1, wherein: the auxiliary bearing seat (6) is in a circular ring shape, the outer ring is a step with a small upper part and a large lower part, and an auxiliary lining plate groove (6.2) for placing an auxiliary lining plate (14) is formed in the edge of the outer ring.

7. The single point mooring yoke joint structure with replaceable bearing at sea of claim 1, wherein: the upper ring lining plate (11), the side lining plates (12), the lower ring lining plate (13) and the auxiliary lining plate (14) are all self-lubricating bearings.