CN210235263U - Connecting rod adjusting type flexible bracket - Google Patents

Abstract

The utility model relates to an ocean engineering equips the field, especially relates to a flexible bracket of connecting rod regulation formula. The connecting rod adjusts flexible carrier and includes: the protective disc, the connecting disc positioned in the protective disc and the four-bar linkage mechanisms arranged between the protective disc and the connecting disc are arranged at intervals along the inner periphery of the protective disc; each four-bar mechanism is respectively provided with a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft, the first hinge shaft and the third hinge shaft of the same four-bar mechanism are connected through an elastic part, each second hinge shaft is connected with a protective disc, and each fourth hinge shaft is connected with a connecting disc; the first hinge shaft of each four-bar linkage mechanism is also connected with the nearest third hinge shaft of two adjacent four-bar linkage mechanisms through a second elastic piece. The utility model discloses can reduce the great concentrated effort of riser and floating platform junction, reduce riser probability of failure, promote riser safety in service and the life in service.

Description

Connecting rod adjusting type flexible bracket

Technical Field

The utility model mainly relates to a marine oil gas conveyor belongs to the ocean engineering and equips the field, especially relates to a flexible bracket of connecting rod regulation formula.

Background

Deep water oil and gas development generally adopts a mode of deepening a water riser by a floating platform, and the common floating platform comprises: tension Leg Platforms (TLP), mono-hull platforms (SPAR), SEMI-submersible platforms (SEMI) and floating production storage offloading platforms (FPSO), etc. Risers are the key pathways for subsea transport of oil and gas from below the sea surface, and the deepwater riser is the steel catenary riser which is the most widely used and most simple to construct. The marine oil transfer riser and the floating platform are in a complex marine working environment and are often influenced by factors such as strong wind, wave and flow, and the motion forms of the floating platform and the riser are inconsistent, so that the joint of the riser and the platform is easy to fatigue and lose efficacy or even break. Riser fatigue damage is a slow cumulative and undetected failure that is often overlooked. However, when the damage is accumulated for a certain time, the damage may suddenly break or burst, and as a result, a large amount of oil gas may leak, which may cause serious environmental pollution accidents. If typhoon occurs, the platform can generate large displacement under the action of strong load, the overlarge swing amplitude of the platform can cause the joint of the vertical pipe and the platform to bear a very large bending moment, the vertical pipe can be bent, and the overlarge heave amplitude of the platform can cause the buckling deformation damage of the vertical pipe.

Stress joint device (Marangg, xu Li Xin, Sun LianLi, etc.; a stress joint device [ P ] for controlling the bending load distribution of marine riser, China: CN201710108632.3, 2017-06-20) prevents the concentrated stress caused by the rigid fixed connection of the end of the riser to the marine floating platform by adding a reinforcing member and a pair of tightening hoops for fixing the reinforcing member at intervals on the outer wall of the riser in the circumferential direction, but the device does not change the rigid connection mode of the riser and the floating platform, and can not effectively eliminate the impact load and the large bending load at the connection position of the floating platform and the riser.

Therefore, the joint of the riser and the floating platform is easy to lose efficacy due to the rigid connection mode of the conventional riser and the floating platform, the joint of the riser and the floating platform has large concentrated acting force, the failure probability of the riser is high, and the service safety and service life are low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is overcome prior art's is not enough, provide a convenient to use, reliability height, can realize slowing down the fatigue damage of riser and floating platform junction, reduce the great concentrated effort of riser and floating platform junction by a wide margin, reduce riser probability of failure, promote riser safety of being in service and the flexible bracket of the connecting rod regulation formula of being in service life-span.

The utility model provides a flexible bracket of connecting rod regulation formula, include: the protective disc comprises a protective disc, a connecting disc positioned in the protective disc and a plurality of four-bar mechanisms arranged between the protective disc and the connecting disc, wherein the four-bar mechanisms are arranged at intervals along the inner periphery of the protective disc;

each four-bar mechanism is provided with a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft respectively, the first hinge shaft and the third hinge shaft of the same four-bar mechanism are connected through a first elastic piece, each second hinge shaft is connected with the protective disc, and each fourth hinge shaft is connected with the connecting disc;

the first hinge shaft of each four-bar linkage mechanism is also connected with the nearest third hinge shaft of two adjacent four-bar linkage mechanisms through a second elastic piece.

Further, the first elastic piece and the second elastic piece are both springs, and the length of the first elastic piece is smaller than that of the second elastic piece.

Furthermore, a plurality of connecting ear plates are arranged on the inner peripheral wall of the protective disc, and the connecting ear plates and the four-bar mechanisms are arranged in a one-to-one correspondence manner; and a second hinge shaft in each four-bar linkage is connected with the corresponding connecting lug plate.

Further, the four-bar linkage is a diamond four-bar linkage.

Further, the thicknesses of the connecting lugs are equal to the thickness of the connecting disc; the thicknesses of four connecting rods in the four-connecting-rod mechanism are also equal; the plurality of first elastic parts and the plurality of second elastic parts are all located on the same plane.

Furthermore, each four-bar linkage mechanism comprises two flat connecting rods and two folded connecting rods, the two flat connecting rods in the same four-bar linkage mechanism are positioned on two sides of the corresponding connecting lug plate and connected with the connecting lug plate, and the two folded connecting rods in the same four-bar linkage mechanism are positioned on two sides of the connecting disc and connected with the connecting disc;

each folded connecting rod comprises a long straight arm and a short straight arm which are folded, the long straight arm is connected with the fourth hinged shaft, and the short straight arm is connected with the flat connecting rod, so that the long straight arm and the flat connecting rod are located in the same plane.

Further, flexible bracket of connecting rod regulation formula still includes big-end bolt and fender dish, be equipped with the through-hole on the bottom plate of fender dish, big-end bolt includes end cover and pole portion, the pole portion of big-end bolt passes in proper order protect the through-hole of dish, keep off dish and connection pad, the end cover with keep off the dish and be located respectively the both sides of the bottom plate of fender dish, and the end cover of big-end bolt with keep off the dish and form and be greater than the recess of the bottom plate thickness of fender dish.

Further, the through hole is a round hole, and the diameter of the through hole is larger than that of the rod part of the large-head bolt.

Furthermore, the connecting rod adjusting type flexible bracket further comprises a supporting fork used for being connected with the vertical pipe, and the supporting fork is fixedly connected with the connecting disc.

Further, the connecting rod adjusting type flexible bracket further comprises a support used for being connected with a floating platform, and the protection disc is hinged to the support.

The utility model discloses a plurality of first elastic components, a plurality of second elastic components, a plurality of four-bar linkage, connection pad and protection dish are connected and are formed connecting rod formula automatically regulated mechanism. On one hand, the four-bar mechanism is a hinge mechanism, can deform and allows relative rotation among parts respectively connected with the first hinge shaft, the second hinge shaft, the third hinge shaft and the fourth hinge shaft, so that the concentrated acting force at the joint of the vertical pipe and the floating platform is buffered; on the other hand, the first elastic part and the second elastic part can absorb vibration through self deformation, and further, the concentrated acting force at the joint of the vertical pipe and the floating platform is buffered. The utility model discloses can be used for being connected of any offshore oil gas pipeline and floating platform, compare with fixed rigid connection bracket, the utility model discloses convenient to use, reliability are high, can eliminate the alternating concentrated load between riser and the floating platform that arouses because of stormy waves flows, can realize slowing down the fatigue damage of riser and floating platform junction, reduce the great concentrated effort of riser and floating platform junction by a wide margin, reduce riser failure probability, promote the equipment of riser safety in active service and active service life-span.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a connecting rod adjusting flexible bracket of the present invention;

fig. 2 is a schematic structural diagram of a connecting rod type automatic adjusting mechanism of the connecting rod adjusting type flexible bracket according to the present invention;

FIG. 3 is a schematic view showing the assembling relationship between the guard plate, the connection plate, the fourth hinge shaft, the baffle plate and the large head bolt of the connecting rod adjusting type flexible bracket of the present invention;

FIG. 4 is a schematic view showing the assembling relationship between the guard plate, the baffle plate and the large head bolt of the connecting rod adjusting type flexible bracket of the present invention;

FIG. 5 is a schematic view of the connection rod adjusting type flexible bracket according to the present invention showing the assembling relationship between the guard plate and the large head bolt;

FIG. 6 is a schematic view of the rear mounting relationship of the connecting rod adjusting flexible bracket of the present invention;

fig. 7 is a schematic view of a C-shaped fork structure of the connecting rod adjusting type flexible bracket of the present invention;

fig. 8 is a schematic view of a guard plate of the connecting rod adjusting type flexible bracket of the present invention;

fig. 9 is a schematic view of a first articulation axis of the connecting rod adjusting flexible bracket of the present invention;

fig. 10 is a schematic view of a second articulation axis of the link-adjusting flexible carrier of the present invention;

FIG. 11 is a schematic view of a third pivot axis of the connecting rod adjusting flexible bracket of the present invention;

FIG. 12 is a schematic view of a dog leg of the link adjusting flexible bracket of the present invention;

FIG. 13 is a schematic diagram of a connection pad of the connecting rod adjusting flexible bracket of the present invention;

FIG. 14 is a schematic view of a baffle disc of the connecting rod adjusting flexible bracket of the present invention;

FIG. 15 is a schematic view of a large head bolt of the connecting rod adjusting type flexible bracket of the present invention;

fig. 16 is a schematic view of a bracket of the connecting rod adjusting type flexible bracket of the present invention.

In the figure: 1. a C-shaped support fork; 101. opening the gap; 102. a ring platform; 103. a collar; 104. a square boss; 105. a column base; 106. a large threaded hole; 107. a small threaded hole; 2. protecting the disc; 201. connecting the ear plates; 202. a lug plate hole; 203. hinging a shaft; 204. a ring plate; 205. a circular hole; 206. a base plate; 3. a long spring; 4. a first hinge shaft; 41. a first hinge shaft; 42. a first shaft cover; 43. A first pin; 5. a second hinge shaft; 51. a second hinge shaft; 52. a second shaft cover; 53. a second pin; 6. a third hinge shaft; 61. a third hinge shaft; 62. a third shaft cover; 63. a third pin; 7. a flat connecting rod; 8. a folded connecting rod; 801. a first through hole; 802. a long straight arm; 803. A second through hole; 804. a short straight arm; 9. a short spring; 10. a connecting disc; 1001. a petal ear plate; 1002. hinging the shaft hole; 1003. a square opening; 1004. a large through hole; 1005. fixing bolt holes; 11. a fourth hinge shaft; 12. a catch tray; 1201. a through hole; 1202. a ring platform; 1203. A disc; 13. a big head bolt; 1301. a threaded rod; 1302. a post rod; 1303. an end cap; 1304. a hexagonal table; 14. fixing the bolt; 15. a support; 1501. a flange hole; 1502. a flange plate; 1503. a wedge-shaped rib plate; 1504. and (6) hinging and supporting the hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that the present invention provides a link-adjusted flexible cradle that can be used with a floating platform support riser, such as an FPSO support steel catenary riser.

The utility model provides a flexible bracket of connecting rod regulation formula, include: the protective disc 2, a connecting disc 10 positioned in the protective disc 2 and a plurality of four-bar linkages arranged between the protective disc 2 and the connecting disc 10, wherein the four-bar linkages are arranged at intervals along the inner periphery of the protective disc 2; each four-bar linkage mechanism is respectively provided with a first articulated shaft 4, a second articulated shaft 5, a third articulated shaft 6 and a fourth articulated shaft 11, the first articulated shaft 4 and the third articulated shaft 6 of the same four-bar linkage mechanism are connected through a first elastic piece, each second articulated shaft 5 is connected with a protective disc 2, and each fourth articulated shaft 11 is connected with a connecting disc 10; the first hinge shaft 4 of each four-bar linkage is also connected to the third hinge shaft 6, which is the nearest of the adjacent two four-bar linkages, by a second elastic member.

When in use, the protective disc 2 is connected with a floating platform through a bracket 15, and the connecting disc 10 is connected with a vertical pipe.

The utility model discloses a plurality of first elastic components, a plurality of second elastic components, a plurality of four-bar linkage, connection pad 10 and protection dish 2 are connected and are formed connecting rod formula automatically regulated mechanism. On one hand, the four-bar mechanism is a hinge mechanism, can deform and allows relative rotation among parts respectively connected with the first hinge shaft, the second hinge shaft, the third hinge shaft and the fourth hinge shaft, so that the concentrated acting force at the joint of the vertical pipe and the floating platform is buffered; on the other hand, the first elastic part and the second elastic part can absorb vibration through self deformation, and further, the concentrated acting force at the joint of the vertical pipe and the floating platform is buffered. The utility model discloses can be used for being connected of any offshore oil gas pipeline and floating platform, compare with fixed rigid connection bracket, the utility model discloses convenient to use, reliability are high, can eliminate the alternating concentrated load between riser and the floating platform that arouses because of stormy waves flows, can realize slowing down the fatigue damage of riser and floating platform junction, reduce the great concentrated effort of riser and floating platform junction by a wide margin, reduce riser failure probability, promote the equipment of riser safety in active service and active service life-span.

Specifically, the first hinge shaft 4, the second hinge shaft 5, the third hinge shaft 6 and the fourth hinge shaft 11 are all composed of hinge shafts, shaft covers and pins; the protective disc 2 is hinged with the bracket through a hinged shaft, and the bracket is connected with the floating platform through a flange plate arranged on the bracket.

The number of the four-bar linkages may be set according to requirements, for example, two, three, four, five, six, seven, eight, and so on. The formation of the land 10 may be provided as required without affecting the function of the land 10. When the four-bar linkage is six, as shown in fig. 2, it is preferable that the coupling disc 10 is a quincunx coupling disc 10. 6 long springs 3, 6 short springs 9, 12 flat connecting rods 7, 12 folded connecting rods 8, a plum blossom connecting plate 10, a protective disc 2, and 6 sets of a first hinging shaft 4, a second hinging shaft 5, a third hinging shaft 6 and a fourth hinging shaft 11 are connected to form a connecting rod type automatic adjusting mechanism.

The first elastic member and the second elastic member may be of any suitable structure such as a spring, a spring plate, rubber, etc. Preferably, as shown in fig. 2, the first elastic member and the second elastic member are both springs, and the length of the first elastic member is smaller than that of the second elastic member.

In order to facilitate the connection between the protection disc 2 and the four-bar linkage, in this embodiment, a plurality of connecting ear plates 201 are disposed on the inner peripheral wall of the protection disc 2, and the plurality of connecting ear plates 201 and the plurality of four-bar linkage are disposed in one-to-one correspondence; the second hinge shaft 5 of each four-bar linkage is connected to the corresponding connecting lug 201.

The utility model discloses in, as long as four bar linkage, just can reduce the great concentrated effort of riser and floating platform junction through four bar linkage's deformation, reduce riser probability of failure, promote riser safety in service and the life-span in service. Preferably, the four-bar linkage is a diamond four-bar linkage, i.e. a parallelogram linkage, which deforms more smoothly and uniformly.

In order to facilitate the quadrilateral mechanism to operate smoothly, the thickness of the plurality of connecting lug plates 201 is preferably equal to that of the connecting disc 10; the thicknesses of four connecting rods in the four-connecting-rod mechanism are also equal; the plurality of first elastic members and the plurality of second elastic members are located on the same plane.

The four-bar mechanism consists of four connecting bars, and the four connecting bars can be straight bars. In order to enhance the smoothness of force transmission, preferably, each four-bar linkage mechanism comprises two flat connecting rods 7 and two folded connecting rods 8, the two flat connecting rods 7 in the same four-bar linkage mechanism are positioned on two sides of the corresponding connecting lug plate 201 and connected with the connecting lug plate 201, and the two folded connecting rods 8 in the same four-bar linkage mechanism are positioned on two sides of the connecting disc 10 and connected with the connecting disc 10; each fold-shaped connecting rod 8 comprises a long straight arm 802 and a short straight arm 804 which are arranged in a fold shape, each long straight arm 802 is connected with the fourth hinge shaft 11, and each short straight arm 804 is connected with the flat connecting rod, so that the long straight arm 802 and the flat connecting rod 7 are in the same plane.

Further, the connecting rod adjusting type flexible bracket further comprises a large-head bolt 13 and a baffle disc 12, a through hole is formed in a bottom plate 206 of the protective disc 2, the large-head bolt 13 comprises an end cover and a rod portion, the rod portion of the large-head bolt 13 sequentially penetrates through the through hole of the protective disc 2, the baffle disc 12 and the connecting disc 10, the end cover and the baffle disc 12 are respectively located on two sides of the bottom plate 206 of the protective disc 2, and the end cover of the large-head bolt 13 and the baffle disc 12 form a groove which is larger than the thickness of the bottom plate 206 of the protective disc. In the embodiment shown in fig. 15, the end cap may be a tortilla cap. The shank of the stud 13 includes a post 1302 and a threaded shaft 1301 coupled to the post 1302.

The through hole may be a square hole, a circular hole, an elliptical hole, a polygonal hole, or any other suitable shape. Preferably, as shown in fig. 8, the through hole is a circular hole 205, and the diameter of the through hole is larger than that of the rod part of the large-head bolt 13. So that the whole formed by the connecting disc 10, the baffle disc 12 and the large head bolt 13 can move along any direction radiating from the radius of the round hole, and further the impact between the riser and the floating platform can be relieved in 360 degrees.

In order to facilitate the connection of the connecting plate 10 and the stand pipe, the connecting rod adjusting type flexible bracket further comprises a support fork connected with the stand pipe, and the support fork is fixedly connected with the connecting plate 10. Specifically, welding, bolting, and the like may be performed. In the embodiment shown in fig. 7, the fork is embodied as a C-shaped fork 1.

In order to facilitate the connection of the protective plate 2 to the floating platform, the link-adjustable flexible cradle further comprises a support 15 for connection to the floating platform. Preferably, the protection plate 2 is hinged to the support 15. The utility model discloses a flexible bracket of connecting rod regulation formula, protection plate 2 and 15 hinged joint of support, the support passes through flange fixed connection with FPSO, and then FPSO can not produce big influence to the stand pipe round the rotation of support hinge fulcrum shaft axis, compares with traditional fixed rigid support, has removed rotatory restraint, and then has eliminated the moment of flexure around support hinge axis direction, further promotes riser safety in service and service life.

Fig. 1 to 16 show an embodiment of the link adjusting type flexible bracket of the present invention, as shown in fig. 1 to 16, the flexible bracket includes a C-shaped supporting fork 1, a protective plate 2, a long spring 3, a first hinge shaft 4, a second hinge shaft 5, a third hinge shaft 6, a flat link 7, a zigzag link 8, a short spring 9, a connecting plate 10, a fourth hinge shaft 11, a blocking plate 12, a large head bolt 13, a fixing bolt 14 and a bracket 15. As shown in fig. 7, the C-shaped fork 1 is provided with a notch 101, a ring platform 102, a collar 103, a square boss 104, a column platform 105, a large threaded hole 106 and a small threaded hole 107. The protective disc 2 is provided with a connecting lug plate 201, a lug plate hole 202, a hinge shaft 203, a ring plate 204, a round hole 205 and a bottom plate 206; the first articulated shaft 4 comprises a first articulated shaft 41, a first shaft cover 42 and a first pin 43, the articulated shaft is provided with a ring platform for isolating the flat connecting rod 7, the folded connecting rod 8, the long spring 3 and the short spring 9, and the first articulated shaft 41 and the first shaft cover 42 are both provided with pin holes for placing the first pin 43; the fourth hinge shaft 11 has the same structure as the second hinge shaft 5, the second hinge shaft 5 comprises a second hinge shaft 51, a second shaft cover 52 and a second pin 53, and the second hinge shaft 51 and the second shaft cover 52 are provided with pin holes for placing the second pin 53; the third hinge shaft 6 comprises a third hinge shaft 61, a third shaft cover 62 and a third pin 63, the third hinge shaft 61 is provided with a ring platform for isolating the flat connecting rod 7, the folded connecting rod 8, the long spring 3 and the short spring 9, and the third hinge shaft 61 and the third shaft cover 62 are both provided with pin holes for placing the third pin 63; the zigzag connecting rod 8 is provided with a first through hole 801, a long straight arm 802, a second through hole 803 and a short straight arm 804; a petal lug plate 1001, a hinge shaft hole 1002 for mounting a fourth hinge shaft 11, a square notch 1003, a large through hole 1004 for placing a large head bolt and a fixing bolt hole 1005 are arranged on the connecting disc 10; the baffle disc 12 is provided with a through hole 1201, a ring table 1202 and a disc 1203; the large-head bolt 13 is provided with a threaded rod 1301, a post 1302, an end cover 1303 and a hexagonal platform 1304; the fixing bolt 14 is used for connecting the connecting disc 10 and the C-shaped support fork 1; the bracket 15 is provided with a flange hole 1501, a flange plate 1502, a wedge-shaped rib plate 1503 and a hinge hole 1504.

When the floating platform is used, the protection disc is hinged with the support through the hinged shaft, the support is connected with the FPSO ship body through the flange plate arranged on the support, the connecting disc is connected with the C-shaped support fork, and the vertical pipe is placed on the C-shaped support fork.

In the structure, a C-shaped support fork 1 is provided with a notch 101 with the width larger than the diameter of a vertical pipe, the notch is a passage through which the vertical pipe passes when the end part of the vertical pipe is placed in the C-shaped support fork 1, and meanwhile, in order to stably support the frustum-shaped end part of the vertical pipe, the C-shaped support fork 1 is also provided with a ring platform 102 and a large threaded hole 106 and a small threaded hole 107 which are respectively connected with a large head bolt 13 and a connecting disc 10; the protection disc 2 is provided with 6 ear plate holes 202 which are uniformly distributed and arranged in the circumferential direction and used for accommodating the second articulated shaft 5, and is also provided with an articulated shaft 203 which is articulated with the bracket 15 and can increase the degree of freedom of the device, the protection disc 2 is articulated with the bracket 15 through the articulated shaft 203, the center of the bottom plate 206 is provided with a round hole 205 with a larger diameter, and the round hole provides a motion space for the big-end bolt 13.

Specifically, in each four-bar linkage, 2 flat connecting rods 7 and 2 folded connecting rods 8 are connected through a first hinge shaft 4, a second hinge shaft 5, a third hinge shaft 6 and a fourth hinge shaft 11 to form a diamond-shaped four-bar linkage, a short spring 9 is located on the short diagonal of the diamond, one end of the short spring is connected with a first hinge shaft 41, and the other end of the short spring is connected with a third hinge shaft 61. The first hinge shaft 41 and the first hinge shaft 41 of any two adjacent rhombic four-bar mechanisms are adjacent, the third hinge shaft 61 and the third hinge shaft 61 are adjacent, and the long spring 3 is used for connecting the first hinge shaft 41 and the first hinge shaft 41 of the two adjacent rhombic four-bar mechanisms or connecting the third hinge shaft 61 and the third hinge shaft 61. The first hinge shaft 4, the second hinge shaft 5, the third hinge shaft 6 and the fourth hinge shaft 11 have similar structures and components, and the second hinge shaft 5 and the fourth hinge shaft 11 belong to the same structural form of components. The hinge shaft is a pin shaft structure with a special structural form formed by connecting a step shaft with a certain shape and an end cover thereof by pins, parts connected with the hinge shaft structure can rotate around the pin shaft, taking the first hinge shaft 41 as an example, a shaft shoulder on the hinge shaft divides the shaft into two parts, a thin shaft section close to the first shaft cover 42 is used for connecting the flat connecting rod 7 and the folded connecting rod 8, and a thin shaft section far from the first shaft cover 42 is used for connecting the long spring 3 and the short spring 9, and similarly, other pin shafts have the same function. One end of the flat connecting rod 7 is connected with the connecting lug plate 201 on the protective disc 2, and is respectively arranged at two sides of the lug plate 201, and the other end is connected with the folded connecting rod 8 through the first hinge shaft 4 or the third hinge shaft 6; the fold-shaped connecting rod 8 is provided with a first through hole 801 used for being connected with the connecting disc 10 through a fourth hinge shaft 11, a long straight arm 802, a second through hole 803 used for being connected with the flat connecting rod 7 through the first hinge shaft 4 or the third hinge shaft 6, and a short straight arm 804, wherein the long straight arm 802 is close to the connecting disc 10, the short straight arm 804 is close to the flat connecting rod 7, and the fold-shaped connecting rods 8 are respectively arranged on two sides of the connecting disc 10.

In order to ensure that a rhombic four-bar mechanism formed by 4 connecting bars can operate smoothly, the thicknesses and the widths of the flat connecting bar 7 and the folded connecting bar 8 are equal, the thicknesses of the lug plate 201 and the connecting disc 10 are also equal, in addition, the 6 long springs 3 and the 6 short springs 9 are also required to be distributed on a plane, and when no force is applied, the 6 long springs 3 and the 6 short springs 9 just enclose a regular 12-sided shape; the connecting disc 10 is a central symmetrical pattern, and is provided with 6 hinge shaft holes 1002 for connecting with all the long straight arms 802 and a large through hole 1004 for connecting with a large head bolt 13; the baffle disc 12 is provided with a through hole 1201 for passing through the large-head bolt 13, a ring platform 1202 for isolating the connecting disc 10 and a disc 1203 with a diameter larger than that of the round hole 205, one surface of the baffle disc 12 provided with the ring platform 1202 is arranged towards the connecting disc 2, namely, the ring platform 1202 is positioned between the disc 1203 and the connecting disc 2; the large-head bolt 13 is provided with a threaded rod 1301 connected with a large threaded hole 106 on the C-shaped supporting fork 1, a post 1302 capable of moving in the round hole 205, an end cover 1303 with the same diameter and thickness as the disc 1203 and a hexagonal table 1304 convenient to assemble and disassemble; one end of the bracket 15 is connected with the FPSO, the other end of the bracket 15 is hinged with the protection disc 2, and a flange hole 1501 and a flange plate 1502 which are used for being fixedly connected with the FPSO, a wedge-shaped rib plate 1503 and a hinging hole 1504 are arranged on the bracket.

The specific assembling condition is that, in the first step, all the flat connecting rods 7 are assembled with the connecting lug plates 201 on the protective disc 2 through the second articulated shafts 5; secondly, assembling all the folded connecting rods 8 with the connecting disc 10 through a fourth hinged shaft 11; thirdly, placing the baffle disc 12 and enabling the central axis of the through hole 1201 to coincide with the central axis of the round hole 205 on the protective disc 2; fourthly, assembling the flat connecting rod 7 and the folded connecting rod 8 by using the first articulated shaft 4 and the third articulated shaft 6; fifthly, connecting the 6 long springs 3 and the 6 short springs 9 with the first hinge shaft 4 and the third hinge shaft 6 in sequence; sixthly, assembling the C-shaped support fork 1 with the connecting disc 10 by using a fixing bolt 14; and eighthly, the large-head bolt 13 sequentially penetrates through the round hole 205 of the protective disc 2, the through hole 1201 of the baffle disc 12 and the large through hole 1004 on the connecting disc 10, and then is screwed and fixed to the large threaded hole 106 on the C-shaped supporting fork 1.

Adopt by the hinge, first articulated shaft 4 that axle cover and pin are constituteed jointly, second articulated shaft 5, third articulated shaft 6 and fourth articulated shaft 11 connect flat connecting rod 7 and fold shape connecting rod 8 and connect the connected mode of protecting dish 2 and connection pad 10, can adapt to the clockwise or anticlockwise rotation of connection pad 10 round its axis, the motion flexibility of connecting rod regulation formula flexible bracket has been increased, the self-adaptation regulation's of the device reliability has been promoted, and simultaneously, be convenient for load and unload and maintain the flexible bracket of connecting rod regulation formula.

Preferably, in this embodiment, the distance by which the long straight arm 802 and the short straight arm 804 of the fold-shaped connecting rod 8 are dislocated in the thickness direction of the fold-shaped connecting rod 8 is skillfully made to be just the thickness of the long straight arm 802, so that after the fold-shaped connecting rod 8 is connected with the flat connecting rod 7, the wide surfaces of the long straight arm 802 and the flat connecting rod 7 of the fold-shaped connecting rod 8 are in the same plane, and thus the stability of force transmission can be increased.

In this embodiment, the C-shaped fork 1, the protection disc 2, the plum blossom connecting disc 10 and the baffle disc 12 are all disposed on the large-head bolt 13, after the large-head bolt 13 is fastened to the C-shaped fork 1, the end surface of the column 1302 of the large-head bolt 13 is pressed on the disc 1203 of the baffle disc 12, the ring platform 1202 of the baffle disc 12 is pressed on the plum blossom connecting disc 10, the plum blossom connecting disc 10 is connected with the C-shaped fork 1 through the fixing bolt 14, and the disc cover 1303 of the large-head bolt 13 and the disc 1203 of the baffle disc 12 form a groove slightly wider than the thickness of the bottom plate 206 of the protection disc 2. This embodiment may mitigate the impact between the riser and the FPSO.

In this embodiment, the thickness and the diameter of the disc 1203 arranged on the blocking disc 12 are equal to those of the end cover 1303 arranged on the stud 13, and the diameters of the disc 1203 and the end cover 1303 are both larger than the diameter of the circular hole 205, the disc 1203 and the end cover 1303 are located on both sides of the bottom plate 206, and the distance between the disc 1203 and the end cover 1303 is slightly larger than the thickness of the bottom plate 206, and meanwhile, the diameter of the post 1302 is far smaller than the diameter of the circular hole 205, and this ingenious design is beneficial to the adaptive adjustment mechanism to smoothly adapt to the movement and rotation of the stud 13 structure caused.

In the embodiment, the connection form of the guard plate 2 and the support 15 in a hinged mode increases the rotation freedom degree of the connecting rod adjusting type flexible bracket, further relieves the rigid constraint condition, and changes the fatigue damage risk of the end part of the traditional riser due to rigid connection.

As shown in fig. 1 and 2, the utility model discloses flexible bracket's of connecting rod regulation formula theory of operation:

firstly, the stand pipe is hoisted through a steel cable, after the frustum-shaped end part of the stand pipe rises and is higher than the C-shaped supporting fork 1 of the flexible bracket, the frustum-shaped end part of the stand pipe needs to be translated to the position right above the C-shaped supporting fork 1 through a crane, and then the pipe body of the stand pipe can reach the inside of a C-shaped ring of the C-shaped supporting fork 1 through the notch 101, and then the stand pipe is placed downwards, and the frustum-shaped end part of the stand pipe is located in the C-shaped supporting fork 1. When a wave current or the like acts on the riser and the FPSO, both move in their own way, for example, when the FPSO has a strong lifting movement, the force generated by the lifting movement is not directly transmitted to the riser, but the FPSO drives the bracket 15 to rise, the bracket 15 drives the protective disc 2 to rise, and the vertical pipe and the C-shaped supporting fork 1 keep the original state due to inertia, that is, the protection plate 2 moves upward relative to the C-shaped fork 1, that is, the protection plate 2 moves upward relative to the connecting plate 10, then the diamond-shaped four-bar linkage is deformed, and the upper diamond-shaped four-bar linkage is elongated, the lower diamond-shaped four-bar linkage is shortened, the long spring 3 connected with the upper diamond-shaped four-bar linkage is stretched and the short spring 9 is compressed, and conversely, the long spring 3 connected with the lower diamond-shaped four-bar linkage is compressed and the short spring 9 is stretched, so that the vertical pipe is driven to move upward after being buffered to a certain degree.

When the vertical pipe rotates around the axis of the big-end bolt 13 counterclockwise relative to the FPSO, the C-shaped bracket 1 drives the connecting disc 10 and the big-end bolt 13 to rotate counterclockwise, the connecting disc rotates counterclockwise relative to the protective disc, which is represented by the vertex of the diamond-shaped four-bar linkage represented by the position of the fourth hinge shaft 11 and the other vertex of the diamond-shaped represented by the position of the third hinge shaft 6 to relatively dislocate and increase the distance between the vertex and the other vertex, that is, the diamond is pulled to be thin and long, the short spring 9 is compressed along with the stretching of all the long springs 3, the process of storing potential energy by the spring is also the process of damping and buffering larger impact load, and simultaneously, compared with rigid connection, the bending moment effect caused by the rotation motion is greatly reduced. In addition, since the protection plate 2 is hinged with the bracket 15, the link adjusting type flexible bracket further releases the constraint, increasing the flexible connection performance of the device.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a flexible bracket of connecting rod regulation formula for FPSO supports steel catenary riser, 6 long springs, 6 short springs and all connecting rods all become central symmetric distribution about the axis of big head bolt 13 to long spring and short spring are in on the coplanar and form a polygon, and when riser and FPSO were acted on by random load, the self-adaptation adjustment mechanism homoenergetic that spring and connecting rod are constituteed was realized steadily buffering.

2. The utility model discloses a flexible bracket of connecting rod regulation formula for FPSO supports steel catenary riser, there is great heave motion with the floating platform when settling in the riser of C shape support fork, in particular, for example when the platform rises suddenly, by 6 long springs, 6 short springs, 12 flat connecting rods, 12 folding connecting rod 8, the connection pad, protection dish and 6 sets of first articulated shafts, the second articulated shaft, the self-adaptation adjustment will take place for the automatic regulating mechanism that third articulated shaft and fourth articulated shaft constitute, can absorb great impact load between riser and the floating platform, six rhombus energy storage units that the concrete presentation is automatic regulating mechanism take place to warp, use the axis of articulated shaft as the limit, cause the long spring of the above part of axis to be compressed by tensile short spring, and the long spring of the below part of axis is stretched by the short spring of compression.

3. The utility model discloses a flexible bracket of connecting rod regulation formula for FPSO supports steel catenary riser, C shape holds in the palm fork 1, connection pad 10, it is as an organic whole by stud 13 and fixing bolt connection to keep off dish 12, keep off dish 12 and stud 13's end cover constitutes a recess that is slightly bigger than fender 2 bottom plate 206 thickness together, stud 13's pole diameter is compared with the round hole diameter of fender 2 for a short time very much, stud 13's pole can follow its axis and the state of round hole axis coincidence to round hole week has great range of movement, then under the control of connecting rod, C shape holds in the palm the fork, connection pad 10, fender dish 12, the whole that stud 13 and fixing bolt formed can move to any direction of round hole radius radiation, and then 360 directions can all slow down the impact between riser and the FPSO.

4. The utility model discloses a flexible bracket of connecting rod regulation formula for FPSO supports steel catenary riser can cushion the riser that comes from vertical state well and the great impact that the relative big head bolt 13 axis of FPSO rotated and arouses, can greatly reduced because the two inconsistent rotation effect and attach the great moment of flexure on riser top. No matter the vertical pipe and the FPSO which are installed on the C-shaped support fork rotate anticlockwise or clockwise around the axis of the large-head bolt 13, the self-adaptive adjusting mechanism which is composed of the 6 long springs, the 6 short springs, the 12 flat connecting rods 7, the 12 folded connecting rods 8 and the connecting disc 10 can well relieve the rotation impact between the vertical pipe and the FPSO, the rhombus formed by the connecting rods deforms, the diagonal line in the direction of the connecting line of the 6 rhombus second hinge shafts and the fourth hinge shaft is lengthened, the diagonal line in the direction of the connecting line of the first hinge shaft and the third hinge shaft is shortened, the short springs are compressed, the long springs are stretched, and the work of the impact load is converted into the elastic potential energy of the springs.

5. The utility model discloses a flexible bracket of connecting rod regulation formula for FPSO supports steel catenary riser, protection plate 2 and support hinged joint, support and FPSO pass through flange fixed connection, then FPSO can not produce big influence to the stand pipe round the rotation of support hinge fulcrum shaft axis, compares with traditional fixed rigid support, has removed rotatory restraint, and then has eliminated the moment of flexure around support hinge axis direction, has further improved the feasibility of scheme.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A connecting rod adjusting flexible carrier, comprising: the protective disc comprises a protective disc, a connecting disc positioned in the protective disc and a plurality of four-bar mechanisms arranged between the protective disc and the connecting disc, wherein the four-bar mechanisms are arranged at intervals along the inner periphery of the protective disc;

each four-bar mechanism is provided with a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft respectively, the first hinge shaft and the third hinge shaft of the same four-bar mechanism are connected through a first elastic piece, each second hinge shaft is connected with the protective disc, and each fourth hinge shaft is connected with the connecting disc;

the first hinge shaft of each four-bar linkage mechanism is also connected with the nearest third hinge shaft of two adjacent four-bar linkage mechanisms through a second elastic piece.

2. The link adjusting flexible bracket according to claim 1,

the first elastic piece and the second elastic piece are both springs, and the length of the first elastic piece is smaller than that of the second elastic piece.

3. The connecting rod adjusting type flexible bracket as claimed in claim 1, wherein a plurality of connecting ear plates are provided on an inner peripheral wall of the protective disc, and the plurality of connecting ear plates are provided in one-to-one correspondence with the plurality of four-bar linkages; and a second hinge shaft in each four-bar linkage is connected with the corresponding connecting lug plate.

4. The link adjusting flexible bracket of claim 3, wherein the four-bar linkage is a diamond shaped four-bar linkage.

5. The link adjusting flexible bracket of claim 4, wherein a plurality of said attachment lugs each have a thickness equal to a thickness of said attachment plate; the thicknesses of four connecting rods in the four-connecting-rod mechanism are also equal; the plurality of first elastic parts and the plurality of second elastic parts are all located on the same plane.

6. The link adjusting flexible bracket according to claim 5, wherein each of the four-bar linkages includes two flat links and two bent links, the two flat links of the same four-bar linkage being located on both sides of and connected to the corresponding connecting lug plate, and the two bent links of the same four-bar linkage being located on both sides of and connected to the connecting plate;

each folded connecting rod comprises a long straight arm and a short straight arm which are folded, the long straight arm is connected with the fourth hinged shaft, and the short straight arm is connected with the flat connecting rod, so that the long straight arm and the flat connecting rod are located in the same plane.

7. The connecting rod adjustable flexible bracket according to any one of claims 1 to 6, further comprising a large head bolt and a baffle disc, wherein a through hole is formed in the bottom plate of the protective disc, the large head bolt comprises an end cover and a rod part, the rod part of the large head bolt sequentially penetrates through the through hole of the protective disc, the baffle disc and the connecting disc, the end cover and the baffle disc are respectively located on two sides of the bottom plate of the protective disc, and the end cover of the large head bolt and the baffle disc form a groove with a thickness larger than that of the bottom plate of the protective disc.

8. The link adjusting flexible bracket according to claim 7, wherein the through hole is a circular hole having a diameter greater than a diameter of a shank of the large head bolt.

9. The connecting rod adjusting flexible carrier according to any one of claims 1-6, further comprising a bracket for connection to a riser, the bracket being fixedly connected to the connecting plate.

10. The link adjustable flexible carrier according to any one of claims 1 to 6, further comprising a bracket for connection to a floating platform, the fender being hingedly connected to the bracket.

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