Combined fixing support for end of manifold of liquefied gas carrier

Abstract

The application discloses a kind of liquefied gas carrier manifold zone end combination fixed support, support base column, pile foundation track, for being set in support base column upper and extending towards the direction of oil collecting disc setting;Pile foundation structure is connected between the shore tube, and is set in pile foundation track, and pile foundation track is equipped with pile foundation structure, and pile foundation structure includes sliding base, damping connection mechanism, sliding base adjustable position is set in pile foundation track, damping connection mechanism is set on sliding base, and shore tube is fixed on damping connection mechanism;Pile foundation track is rotated in horizontal direction relative to support base column and is adjusted as first degree of freedom, and pile foundation structure moves position in pile foundation track along its length direction as second degree of freedom.The application can move the position of pile foundation structure in pile foundation track by setting the pile foundation track extending towards the oil collecting disc, form the support close to the end of shore tube, to meet the requirement of OCIMF specification, and the fixed support can avoid the oil collecting disc below, and it is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of pipeline support technology, specifically to a combined fixed support for the end of the manifold area of ​​a liquefied petroleum vessel. Background Technology

[0002] The manifold area of ​​a liquefied petroleum carrier is an important component for loading cargo. When the ship is in port, due to the influence of wind and waves, the hoses carrying the liquid cargo exert a certain pulling force on the end of the manifold area. Due to the limitations of OCIMF specifications, there are distance requirements between the flange at the end of the manifold area and the fixed support. In addition, there is an oil collection tray located below the flange at the end of the manifold area. Therefore, the design of the fixed support for the end of the manifold area presents certain challenges.

[0003] Existing pipe end fixing support structures, such as the one disclosed in application number CN202222622076.0, include a base frame and a pipe body. The base frame has mounting screw holes at its bottom and a supporting pad at its top. As shown in the attached drawings, in this prior art, the pipe end is typically fixed to an arc-shaped bracket, with a U-shaped clamp securing the upper side of the pipe to fix its position. This type of pipe fixing is a tight-fitting method. Firstly, during pipe transportation, irregular vibrations occur due to factors such as changes in fluid velocity within the pipe, and this fixing method is not conducive to mitigating these vibrations. Secondly, since there is an oil collection tray below the flange at the end of the manifold, it is inconvenient to install support fixing near the pipe end, thus failing to meet OCIMF specifications.

[0004] according to Figure 1 The image shows the OCIMF specification for fixed bracket distance requirements. Figure 2 This is a schematic diagram of the terminal piping layout in the manifold area. The distance between the shore-connected pipe joint in the manifold area and the ship's chord edge is required to be 4600mm. (See attached diagram) Figure 2 This is a schematic diagram showing the distance "C" from the flange end of the fixed support point (black dot) in the OCIMF specification.

[0005] Taking the MR50000T DN200 shore pipe as an example, the original distance from the support point to the flange port is 400mm, exceeding the OCIMF specification: the maximum distance for DN200 is 250mm. Furthermore, the oil collection tray is located 200mm below this point, making it inconvenient to extend downwards to the deck. Therefore, the end support design of the shore pipe needs to meet the OCIMF specification. However, due to the location of the oil collection tray below the shore pipe, it is inconvenient to provide support close to the pipe end. Therefore, a design for a fixed support at the end of the manifold area on a liquefied petroleum vessel is crucial. This design can be used on liquefied petroleum vessels of various tonnages, satisfying both the fixing function of the support and the requirements of the OCIMF specification, while also addressing various pipe angle changes during pipeline laying and mitigating and absorbing pipeline vibrations.

[0006] In view of the above, it is necessary to propose a combined fixed bracket for the end of the manifold area of ​​a liquefied vessel to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned technical problems by providing a combined fixing bracket for the end of the manifold area of ​​a liquefied petroleum vessel.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a combined fixing bracket for the end of the manifold area of ​​a liquefied petroleum vessel, comprising:

[0009] Support columns are set in the pipe gathering area and close to the oil gathering pan to form a foundation for fixing the shore pipe;

[0010] The pile foundation track is set above the supporting column and extends toward the oil collection pan. The pile foundation track includes a track frame, and a guide track is provided inside the track frame along its length.

[0011] A pile foundation structure is set on a pile foundation track for connection with a shore access pipe. At least one pile foundation structure is provided in the pile foundation track. The pile foundation structure includes a sliding base and a shock-absorbing connection mechanism. The sliding base is adjustable in position and set in the pile foundation track. The shock-absorbing connection mechanism is set on the sliding base and the shore access pipe is fixed on the shock-absorbing connection mechanism.

[0012] The first degree of freedom is the horizontal rotation of the pile foundation track relative to the supporting column, and the second degree of freedom is the movement of the pile foundation structure along its length within the pile foundation track.

[0013] Furthermore, the shock-absorbing link mechanism includes a damping shock-absorbing column and a pipe fixing part; the lower end of the damping shock-absorbing column is vertically fixed on the sliding base, and at least two sets of damping shock-absorbing columns are symmetrically arranged below the pipe fixing part. The pipe fixing part includes a lower support plate and an upper clamp. The lower support plate supports the lower side of the bank pipe, and the upper clamp is clamped on the upper side of the bank pipe so that the lower support plate and the upper clamp form a tight clamping fixation on the bank pipe. The two ends of the upper clamp are locked to the lower support plate by bolts.

[0014] Furthermore, the damping shock absorber column includes a support cylinder, a piston rod, a piston, and a return spring. The support cylinder is fixed on a sliding base and is hollow inside. The piston rod slides from the upper end of the support cylinder into the support cylinder and is positioned inside the support cylinder. The piston divides the inside of the support cylinder into upper and lower damping chambers. Each of the two damping chambers is equipped with a return spring. A capillary tube connects the upper and lower damping chambers to the piston. The damping chambers are filled with hydraulic oil.

[0015] Furthermore, the pile foundation track also includes a displacement driving unit for driving the pile foundation structure to move. The displacement driving unit includes a guide shaft and a driving screw. The guide shaft and the driving screw are both arranged in the guide track along the length direction of the track frame. The guide shaft is slidably connected through the sliding base, and the driving screw passes through the sliding base and is threadedly connected to it.

[0016] Furthermore, the pile foundation structure is provided with two sets within the guide rail, and the guide rail is provided with two drive screws. Each of the two drive screws drives one set of pile foundation structures to move. The sliding base is provided with a square hole through which the other drive screw passes.

[0017] Furthermore, the supporting column includes an outer frame column and a central shaft. The outer frame column is vertically fixed on the ground, and the central shaft is coaxially arranged inside the outer frame column. The central shaft is rotatably connected to the outer frame column and is located below the pile foundation track. A first degree of freedom driving mechanism is provided inside the outer frame column.

[0018] Furthermore, the first degree of freedom driving mechanism includes a first worm gear, a first worm, and a hand crank. The lower end of the central shaft is provided with a first worm gear, which is rotatably disposed within the outer frame column. The first worm is rotatably disposed within the outer frame column, and the first worm meshes with the first worm gear. One end of the hand crank extends out of the outer frame column and is provided with a hand crank.

[0019] Furthermore, the outer frame column is provided with a side support column on the side away from the oil collection pan.

[0020] Furthermore, a third degree of freedom drive mechanism is provided between the track frame and the central axis, and the change of the pitch angle of the track frame relative to the ground is the third degree of freedom.

[0021] Furthermore, the third degree of freedom adjustment mechanism includes a U-shaped frame, a second worm gear, and a second worm. The U-shaped frame is fixedly mounted on the central shaft, the track frame is rotatably mounted on the upper end of the U-shaped frame, the lower end face of the track frame is fixedly provided with the second worm gear, and the bottom of the U-shaped frame is rotatably provided with the second worm gear, which meshes with the second worm gear.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. By setting a pile foundation track extending toward the oil collection pan, the pile foundation structure can be moved within the pile foundation track to form a support close to the end of the through-shore pipe, thereby meeting the requirements of the OCIMF specification. Furthermore, this fixed support can avoid the oil collection pan below, making it convenient to use.

[0024] 2. Setting up multiple pile foundation structures on the pile foundation track can provide multi-point support for the end of the pipe, improving the support and fixation effect of the pipe. Furthermore, the two support points can balance the pressure at both ends of the pile foundation track, making the two ends of this fixed support more stable.

[0025] 3. Install a vibration damping connection mechanism on the pile foundation structure to dampen the vibration of the pipeline when transporting materials through the shore pipe.

[0026] 4. This fixed support has a first degree of freedom, a second degree of freedom, and a third degree of freedom, which can meet the installation of pipelines at different angles. The first degree of freedom can meet the support of pipelines that deflect in the horizontal direction; the second degree of freedom can meet the adjustment of different support positions of the pipeline; and the third degree of freedom can meet the adaptive fixing of the pipeline's pitch angle. Attached Figure Description

[0027] Figure 1 To meet the OCIMF standard requirements for fixed support distance;

[0028] Figure 2 Rendering of the distance between the DN200 fixed bracket;

[0029] Figure 3 This is a structural schematic diagram of a combined fixed bracket at the end of the manifold area of ​​a liquefied petroleum vessel according to this application;

[0030] Figure 4 This is an exploded view of a combined fixed bracket at the end of the manifold area of ​​a liquefied petroleum vessel, as described in this application.

[0031] Figure 5 This is a schematic diagram of the third degree of freedom drive mechanism of this application;

[0032] Figure 6 This is a side view of the combined fixing bracket of this application;

[0033] Figure 7 For this application Figure 6 Schematic diagram of section AA;

[0034] In the diagram: 1. Oil collecting pan; 2. Bank access pipe; 3. Fixed bracket; 4. Fixed support point; 5. Track frame; 6. Guide track; 7. Sliding base; 8. Damping and shock-absorbing column; 9. Pipe fixing part; 10. Lower support plate; 11. Upper clamp; 12. Support cylinder; 13. Piston rod; 14. Piston; 15. Return spring; 16. Capillary tube; 17. Guide shaft; 18. Drive screw; 19. Square hole; 20. Outer frame column; 21. Central shaft; 22. First worm gear; 23. First worm; 24. Hand crank; 25. Side support column; 26. U-shaped frame; 27. Second worm gear; 28. Second worm; 29. ​​Support frame body; 30. Arc-shaped groove; 31. Side wing; 32. Bolt hole; 33. Worm gear shaft. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] like Figure 2 As shown, since the shore access pipe 2 needs to be installed above the oil collection tray 1 to facilitate the collection of materials dripping from the end of the shore access pipe 2 during pipeline installation and dismantling, the design of the oil collection tray 1 must cover a sufficiently large area at the end of the shore access pipe 2. Therefore, the installation of the oil collection tray 1 is consistent with the OCIMF specifications. Figure 1 The provisions regarding the support location at the end of the 2nd shore passage pipe in the original document contradict each other, making it impossible to install a support close enough to the end of the 2nd shore passage pipe. Consequently, the support point at the end of the 2nd shore passage pipe does not meet the OCIMF specifications. Figure 2 The diagram shows the layout of the end piping system in the manifold area. The distance between the shore pipe joint 2 and the ship's chord edge is required to be 4600mm. (See attached diagram.) Figure 2 This is a schematic diagram showing the distance "C" from the flange end of fixed support point 4 (black dot) in the OCIMF specification.

[0037] Taking the MR50000T DN200 shore pipe 2 as an example. The original distance C from the support point to the flange port is 400mm, which exceeds the OCIMF specification: According to Figure 1 As shown, the maximum distance for DN200 is 250mm. However, the oil collection tray 1 is located below the 200mm point, making it inconvenient to extend downwards to the deck surface.

[0038] Therefore, to meet the OCIMF specifications for the end support design of the shore access pipe 2, a combined fixed support 3 for the end of the liquefied gas tanker's manifold area is designed, including a support base column, which is set in the manifold area and close to the oil collection tray 1 to form a foundation for fixing the shore access pipe 2; as shown Figure 3 , 4As shown, the supporting column includes an outer frame column 20 and a central shaft 21. The outer frame column 20 is vertically fixed to the ground. The outer frame column 20 has two C-shaped channel steels welded together. The two C-shaped channel steels can provide high support strength, and the slots between the two channel steels are opposite each other. The central shaft 21 is set inside the slot space. Specifically, the central shaft 21 is coaxially set inside the outer frame column 20. The central shaft 21 is rotatably connected to the outer frame column 20. Multiple bearings are set from top to bottom inside the slot. The inner ring of the bearing is interference-fitted onto the central shaft 21, and the outer ring of the bearing is fixed to the inner wall of the C-shaped channel steel, so that the central shaft 21 and the outer frame column 20 can maintain a highly stable rotational connection. Furthermore, the central shaft 21 is set below the pile foundation track, and a first degree of freedom driving mechanism is provided inside the outer frame column 20. Through the setting of the central shaft 21, the upper structure set on the upper side of the supporting column can be rotated and controlled in the horizontal direction relative to the supporting column, thereby realizing the control of the first degree of freedom of the combined fixed bracket 3 of this application.

[0039] Specifically, the first degree of freedom driving mechanism includes a first worm gear 22, a first worm 23, and a hand crank 24. The first worm gear 22 is provided at the lower end of the central shaft 21 and is rotatably disposed within the outer frame post 20. The first worm 23 is rotatably disposed within the outer frame post 20 and meshes with the first worm gear 22. One end of the hand crank 24 extends out of the outer frame post 20. The first worm gear 22 is fixedly disposed at the lower part of the central shaft 21. By meshing with the worm, it drives the central shaft 21 to rotate at a certain angle to control the adjustment of the first degree of freedom. The first worm 23 is rotatably disposed within the outer frame post 20. In some embodiments, the rotation of the first worm 23 can be controlled by the hand crank 24, which is manual control of the first degree of freedom rotation. In other embodiments, it can also be designed for automatic control. Specifically, a set of reduction drive motors is provided at the hand crank 24. The reduction drive motors can automatically control the rotation of the first worm 23, thereby controlling the rotation of the central shaft 21. Furthermore, a side support column 25 is provided on the side of the outer frame column 20 away from the oil collection pan 1. For example... Figure 3 , 6 As shown, the outer frame column 20 can be set as close as possible to the oil collection tray 1 on the side near the oil collection tray 1, or the outer frame column 20 can be welded to the oil collection tray 1 to form a whole. The side support column 25 and the outer frame column 20 can form a triangular stable support to provide lateral stability for the overall equipment.

[0040] The pile foundation track is installed above the supporting column and extends towards the oil collection plate 1, such as... Figure 6As shown, the pile foundation track is connected above the central axis 21 by a reinforced support frame 29 and extends to the oil collection pan 1, so that the pile foundation track forms a support surface for the growth of the shore pipe 2. Specifically, the pile foundation track includes a track frame 5, and a guide track 6 is provided inside the track frame 5 along its length; as shown Figure 6 As shown, two sets of pile foundation structures are set on the pile foundation track. The pile foundation structures can be supported near the end of the through-bank pipe 2, thereby meeting the OCIMF specifications.

[0041] The position of the pile foundation structure on the pile foundation track can be adjusted; that is, the movement of the pile foundation structure along its length within the pile foundation track is the second degree of freedom. Specifically, the pile foundation track also includes a displacement driving unit for driving the movement of the pile foundation structure. The displacement driving unit includes a guide shaft 17 and a drive screw 18. Both the guide shaft 17 and the drive screw 18 are arranged within the guide track 6 along the length of the track frame 5. The guide shaft 17 guides the movement of the pile foundation structure, while the drive screw 18 provides the driving force for the movement of the pile foundation structure. The guide shaft 17 is slidably connected through the sliding base 7, such as... Figure 4 , Figure 7 As shown, the guide rod is arranged parallel to the guide rail 6. A linear bearing should be installed at the sliding connection between the sliding base 7 and the guide rod to reduce the resistance to movement. The drive screw 18 that drives the pile foundation structure to move needs to pass through the sliding base 7 and be threaded. A drive motor is installed at one end of the drive screw 18 to make the drive screw 18 rotate, thereby controlling the movement position of the pile foundation structure on the pile foundation rail. This makes it easy for this device to be used to adjust the support point position of the through-bank pipe 2 with different diameters.

[0042] like Figure 3-6 As shown, the pile foundation structure has two sets within the guide rail 6, as follows: Figure 6 As shown, the two sets of pile foundation structures are located on both sides of the support position of the central axis 21, so that the pressure on both sides of the pile foundation track can be balanced, which is convenient to maintain the overall stability of the fixed support 3 of this combination. When the pile foundation structure needs to be adjusted, the change of the position of the pile foundation structure is the change of the pressure point acting on the pile foundation track. In fact, it is the change of the length of the test pressure arm of the pile foundation structure on both sides. Although the movement will change the pressure on both sides of the guide track 6, the movement is relatively small overall. Moreover, the reinforced support frame 29 set on the lower side of the pile foundation track forms a stable triangular support structure with the support column, which can maintain the stable support of the extension end of the pile foundation track.

[0043] Furthermore, the two sets of pile foundation structures can be independently adjusted in position. By adjusting this second degree of freedom, the pressure at both ends of the pile foundation track is made as even as possible. Specifically, the guide track 6 is equipped with two drive screws 18, each of which drives one set of pile foundation structures to move. Figure 4 ,7 As shown, the target sliding base 7 to be driven by the drive screw 18 is threadedly connected, while it is connected to another drive screw 18 through a sleeve. The sliding base 7 is provided with a square hole 19 through which the other drive screw 18 passes, so that the square hole 19 does not contact the drive screw 18 passing through, thereby achieving the purpose of each drive screw 18 controlling the movement of the target sliding base 7.

[0044] The pile foundation structure, set on the pile foundation track, is used to connect with the shore pipe 2. At least one pile foundation structure is installed within the pile foundation track; this embodiment takes the installation of two pile foundation structures as an example. Figure 4 As shown, the pile foundation structure includes a sliding base 7 and a damping connection mechanism. The sliding base 7 is adjustablely positioned within the pile foundation track, and the damping connection mechanism is mounted on the sliding base 7. The through-bank pipe 2 is fixed to the damping connection mechanism. The damping connection mechanism includes damping shock absorber columns 8 and a pipe fixing part 9. The lower end of the damping shock absorber column 8 is vertically fixed to the sliding base 7. At least two sets of damping shock absorber columns 8 are symmetrically arranged below the pipe fixing part 9. The damping shock absorber columns 8 on both sides provide two-way connection to the pipe fixing part 9 on the upper side. The pipe fixing part 9 provides balanced support and includes a lower support plate 10 and an upper clamp 11. The lower support plate 10 has an arc-shaped groove 30 in the middle. In actual use, the pipe fixing part 9 can be replaced with a suitable size according to the diameter of the pipe. The arc-shaped groove 30 matches the outer diameter of the through-bank pipe 2. The lower support plate 10 supports the lower side of the through-bank pipe 2. Side wings 31 are provided on both sides of the lower support plate 10. The side wings 31 are connected and fixed to the damping shock absorber column 8. The side wings 31 have bolt holes 32 in the middle. Bolts pass through the bolt holes 32. Hole 32 is fixed to the top of the damping and shock-absorbing column 8. The two sides of the side wing 31 are used to fix the upper clamps 11. The upper clamps 11 are clamped onto the upper side of the bank-connecting pipe 2, forming a tight clamping fixation between the lower support plate 10 and the upper clamps 11. Both ends of the upper clamps 11 are locked to the lower support plate 10 with bolts. The upper clamps 11 are installed at both the front and rear ends of the lower support plate 10 to increase the fixing firmness of the bank-connecting pipe 2. Both ends of the upper clamps 11 are locked to both ends of the side wing 31 with bolts. In actual use, if it is necessary to adjust the pile foundation structure... The position adjustment is divided into two situations: First, when the shore pipe 2 is being laid, before it is installed, the position of the pile foundation structure is changed during the pipe laying. At this time, there is no load on the pile foundation structure, so it can be adjusted freely. Second, when the shore pipe 2 has been erected, if the support point does not meet the standard, the upper clamp 11 is loosened first, and then the jacking equipment is used to temporarily support the shore pipe 2. Then the position of the pile foundation structure is adjusted. After the adjustment is completed, the shore pipe 2 is lowered and fixed.

[0045] The damping and shock-absorbing column 8 can effectively absorb vibrations and buffer shocks, preventing excessive vibration of the through-pipe 2 during material transportation. Specifically, for example... Figure 7As shown, the device includes a support cylinder 12, a piston rod 13, a piston 14, and a return spring 15. The support cylinder 12 is fixed on the sliding base 7. The support cylinder 12 is hollow inside. The piston rod 13 slides from the upper end of the support cylinder 12 and penetrates into the support cylinder 12, where the piston 14 is located. The piston 14 divides the inside of the support cylinder 12 into upper and lower damping chambers. The damping chambers are filled with hydraulic oil, and each of the two damping chambers is equipped with a return spring 15. A capillary tube 16 connects the upper and lower damping chambers to the piston 14. It is understandable that the hydraulic oil can flow freely in the two damping chambers through the capillary tube 16, which can play a good hydraulic buffering role. The return springs 15 installed in the two damping chambers are used to maintain the piston 14 in the middle of the support cylinder 12 when in a stable position, so as to maintain the effectiveness of damping. In the free state, the upper and lower return springs 15 maintain the position of the piston rod 13. When the through pipe 2 vibrates, the piston rod 13 pushes the piston 14 to move in the support cylinder 12. Damping shock absorption can be achieved by using hydraulic oil and return springs 15.

[0046] like Figure 4 As shown in the figure, the support frame 29 is a fixed structure that can only maintain the pile foundation track in a planar position. In this embodiment, in order to adapt to the support and erection of pipelines with different pitch angles in the manifold area, the structure of the support frame 29 is improved. Specifically, a third degree of freedom drive mechanism is provided between the track frame 5 and the central axis 21, so that the pitch angle of the pile foundation track can be adjusted and controlled, and the change of the pitch angle of the track frame 5 relative to the ground is the third degree of freedom.

[0047] Specifically, such as Figure 5 As shown, the third degree of freedom adjustment mechanism includes a U-shaped frame 26, a second worm gear 27, and a second worm 28. The U-shaped frame 26 is fixedly mounted on the central shaft 21, with its bottom fixed to the upper end of the central shaft 21. The second worm gear 27 is a half-plate worm gear with a worm gear shaft 33 at its center. The upper surface of the half-plate second worm gear 27 is fixedly connected to the lower end face of the track frame 5, and the second worm gear is placed inside the U-shaped frame 26, so that the two ends of the worm gear shaft 33 are rotatably connected to the two sides of the U-shaped frame 26, allowing the track frame 5 to be rotatably mounted on the upper end of the U-shaped frame 26, forming free rotation of the pitch angle. The bottom of the U-shaped frame 26 is rotatably equipped with a second worm 28, which meshes with the second worm gear 27. When the second worm gear 28 rotates, it can mesh and drive the second worm gear 28 to rotate, thereby realizing the adjustment of the third degree of freedom, namely the pitch angle of the pile foundation track.

[0048] Understandably, this combination of fixed supports 3 can be used to adjust the end support points of the through-shore pipe 2 to meet OCIMF specifications; secondly, this combination of fixed supports 3 can also be used to support and fix various positions in the middle of the pipe, and through flexible adjustment of the first degree of freedom, the second degree of freedom, and the third degree of freedom, it can be used to adjust the horizontal angle deflection, the pitch angle rotation, and the support position, so as to achieve flexible application and stable support.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A combined fixing bracket for the end of the manifold area of ​​a liquefied petroleum vessel, characterized in that, include: Support pillars are set in the manifold area and close to the oil collection tray (1) to form a foundation for fixing the shore pipe (2); The pile foundation track is set above the supporting column and extends towards the oil collection plate (1). The pile foundation track includes a track frame (5) and a guide track (6) is provided inside the track frame (5) along its length. A pile foundation structure is set on a pile foundation track for connection with the shore pipe (2). At least one pile foundation structure is provided in the pile foundation track. The pile foundation structure includes a sliding base (7) and a shock-absorbing connection mechanism. The sliding base (7) is set in the pile foundation track in an adjustable manner. The shock-absorbing connection mechanism is set on the sliding base (7). The shore pipe (2) is fixed on the shock-absorbing connection mechanism. The first degree of freedom is the horizontal rotation of the pile foundation track relative to the supporting column, and the second degree of freedom is the movement of the pile foundation structure along its length within the pile foundation track. The pile foundation track also includes a displacement drive unit for driving the pile foundation structure to move. The displacement drive unit includes a guide shaft (17) and a drive screw (18). The guide shaft (17) and the drive screw (18) are both arranged in the guide track (6) along the length direction of the track frame (5). The guide shaft (17) is slidably connected through the sliding base (7), and the drive screw (18) passes through the sliding base (7) and is threadedly connected to it. The pile foundation structure is provided in two sets within the guide rail (6), and the guide rail (6) is provided with two drive screws (18). Each of the two drive screws (18) drives one set of pile foundation structures to move. The sliding base (7) is provided with a square hole (19) through which the other drive screw (18) passes. One set of pile foundation structures is located above the oil collection plate.

2. The combined fixed bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 1, characterized in that, The damping connection mechanism includes a damping column (8) and a pipe fixing part (9); the lower end of the damping column (8) is vertically fixed on the sliding base (7), and at least two sets of damping columns (8) are symmetrically arranged below the pipe fixing part (9). The pipe fixing part (9) includes a lower support plate (10) and an upper clamp (11). The lower support plate (10) supports the lower side of the bank pipe (2), and the upper clamp (11) is clamped on the upper side of the bank pipe (2) so that the lower support plate (10) and the upper clamp (11) form a tight clamping fixation on the bank pipe (2). The two ends of the upper clamp (11) are locked to the lower support plate (10) by bolts.

3. The combined fixing bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 2, characterized in that, The damping shock absorber column (8) includes a support cylinder (12), a piston rod (13), a piston (14), and a return spring (15). The support cylinder (12) is fixed on the sliding base (7). The support cylinder (12) is hollow inside. The piston rod (13) slides from the upper end of the support cylinder (12) into the support cylinder (12) and sets the piston (14) inside the support cylinder (12). The piston (14) divides the inside of the support cylinder (12) into upper and lower damping chambers. The two damping chambers are respectively provided with return springs (15). The piston (14) is provided with a capillary tube (16) connecting the upper and lower damping chambers. The damping chambers are filled with hydraulic oil.

4. The combined fixing bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 1, characterized in that, The supporting column includes an outer frame column (20) and a central shaft (21). The outer frame column (20) is vertically fixed on the ground. The central shaft (21) is coaxially arranged inside the outer frame column (20). The central shaft (21) is rotatably connected to the outer frame column (20). The central shaft (21) is arranged below the pile foundation track. The outer frame column (20) is provided with a first degree of freedom driving mechanism.

5. The combined fixing bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 4, characterized in that, The first degree of freedom driving mechanism includes a first worm wheel (22), a first worm (23), and a hand crank (24). The lower end of the central shaft (21) is provided with the first worm wheel (22). The first worm wheel (22) is rotatably disposed inside the outer frame column (20). The first worm (23) is rotatably disposed inside the outer frame column (20). The first worm (23) meshes with the first worm wheel (22). One end of the first worm (23) extends out of the outer frame column (20) and is provided with a hand crank (24).

6. The combined fixing bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 4, characterized in that, The outer frame column (20) is provided with a side support column (25) on the side away from the oil collection plate (1).

7. The combined fixing bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 4, characterized in that, A third degree of freedom drive mechanism is provided between the track frame (5) and the central axis (21), and the change of the pitch angle of the track frame (5) relative to the ground is the third degree of freedom.

8. The combined fixing bracket (3) at the end of the manifold area of ​​a liquefied petroleum vessel according to claim 7, characterized in that, The third degree of freedom adjustment mechanism includes a U-shaped frame (26), a second worm gear (27), and a second worm (28). The U-shaped frame (26) is fixedly mounted on the central shaft (21). The track frame (5) is rotatably mounted on the upper end of the U-shaped frame (26). The second worm gear (27) is fixedly mounted on the lower end face of the track frame (5). The second worm (28) is rotatably mounted on the bottom of the U-shaped frame (26). The second worm (28) meshes with the second worm gear (27).

Images