Self-locking type steel pipe pile marine transportation base
By setting up a self-locking structure on the transportation base of offshore wind power steel pipe piles, the problem of sliding between steel pipe piles and transportation barges under adverse weather conditions is solved, and the firm fixation and transportation safety of steel pipe piles are achieved.
Patent Information
- Application Number
- CN202422629818.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The fixing method between the existing offshore wind power steel pipe piles and the transportation barge is prone to damage to welds or loose connections under adverse weather conditions, resulting in unsafe transportation process.
A self-locking steel pipe pile sea transportation base is designed, and a pile holding unit, a baffle and a quadrilateral self-locking unit are installed on the base with a self-locking structure. Through the deformation ability of the self-locking unit, the force is converted under adverse weather conditions, and the wrapping force of the pile holding unit on the steel pipe pile is increased, forming a self-locking effect to ensure that the steel pipe piles are firmly fixed.
Under unhealthy marine meteorological conditions, the self-locking base can effectively prevent the steel pipe piles from sliding relative to each other, ensure safe transportation, and have the advantages of reasonable structure, easy manufacturing, strong self-locking ability and easy installation.
Smart Images
Figure CN223266997U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of offshore wind turbine foundation transportation equipment, and more specifically, relates to a self-locking steel pipe pile offshore transportation base. Background Art
[0002] Offshore wind power does not occupy land area and has abundant offshore wind resources, making it suitable for large-scale development. It is now gradually becoming an important part of my country's new energy development.
[0003] At present, the foundations of offshore wind turbines in offshore areas mostly use steel pipe single pile foundations, and transport barges are mainly used to transport the steel pipe piles from the dock to the construction area. Offshore wind power steel pipe piles have large diameters, long pile bodies, and heavy weight. In addition, the marine weather is complex, and strong winds and high surges are often encountered during transportation, causing the ship to tilt, rise, or fall. It is very important to ensure a firm connection between the steel pipe piles and the ship during transportation.
[0004] At present, offshore wind power steel pipe piles and transport barges are fixed by welding or traditional base fixation. When encountering adverse weather conditions, the steel pipe piles tend to slide frequently due to the ship's roll, uplift, downstroke, etc., causing the connection between the steel pipe piles and the ship to be subjected to dynamic loads, which can easily lead to weld damage or loosening of the pile-barge connection. Utility Model Content
[0005] The purpose of the utility model is to provide a self-locking steel pipe pile offshore transport base, which increases the connection firmness between the steel pipe pile and the ship by arranging a self-locking structure on the transport base.
[0006] To achieve the above-mentioned purpose, the present invention provides a self-locking steel pipe pile offshore transport base, comprising:
[0007] The bottom plate is provided with a slide groove.
[0008] A pile holding unit is slidably connected in the chute; the pile holding unit comprises two symmetrically arranged first pile holding units and a second pile holding unit; the first pile holding unit and the second pile holding unit are provided with an arc surface in contact with the steel pipe pile;
[0009] a baffle connected to the bottom plate;
[0010] The quadrilateral self-locking unit includes a first self-locking rod, a third self-locking rod, a second self-locking rod, and a fourth self-locking rod connected in sequence; the four corner points of the self-locking unit are respectively connected to the baffle, the first pile-holding unit, the bottom plate, and the second pile-holding unit; the first self-locking rod, the third self-locking rod, the second self-locking rod, and the fourth self-locking rod are all rotatably connected to each other; and
[0011] The limiting unit includes a first limiting unit and a second limiting unit; the first limiting unit and the second limiting unit are respectively abutted against one side of the first pile-holding unit and the second pile-holding unit.
[0012] Furthermore, it also includes a third limiting unit and a fourth limiting unit, the third limiting unit and the first limiting unit are provided with a first inclined surface structure that cooperates with each other and is slidably connected, and the two sides of the third limiting unit are respectively abutted with the first limiting unit and the first pile-holding unit; the fourth limiting unit and the second limiting unit are provided with a second inclined surface structure that cooperates with each other and is slidably connected, and the two sides of the fourth limiting unit are respectively abutted with the second limiting unit and the second pile-holding unit.
[0013] Furthermore, the third limiting unit and the fourth limiting unit are wedge-shaped blocks.
[0014] Furthermore, the first self-locking rod, the third self-locking rod, the second self-locking rod and the fourth self-locking rod are all connected by bolts and can rotate freely around the connection points.
[0015] Furthermore, the first self-locking rod, the third self-locking rod, the second self-locking rod and the fourth self-locking rod are all rods with a male head at one end and a female head at the other end. The male head is a single-leaf lock with a round hole, and the female head is a double-leaf lock with a round hole. The male head is inserted into the female head and connected by bolts.
[0016] Furthermore, the baffle, the first pile-holding unit and the second pile-holding unit are each provided with a connecting unit, and the connecting unit includes two oppositely arranged first connecting plates and second connecting plates, and the first connecting plates and the second connecting plates are each provided with bolt mounting holes; the first bolt passes through the bolt mounting holes on the first connecting plates and the second connecting plates, and its two ends are fixed with nuts; the first self-locking rod, the third self-locking rod, the second self-locking rod and the fourth self-locking rod are all rotatably connected to the first bolt.
[0017] Furthermore, a second bolt is connected to the base plate, one end of the second bolt is fixed with a nut, and the third self-locking rod and the second self-locking rod are rotatably connected to the second bolt.
[0018] Furthermore, the self-locking unit is rhombus-shaped.
[0019] Furthermore, two slide grooves are arranged in parallel on the bottom plate.
[0020] Furthermore, the limiting unit and the base plate are fixed via teeth and grooves; or the limiting unit is fixed to the base plate via hydraulic equipment.
[0021] Compared with the prior art, the present invention has the following technical effects:
[0022] The utility model provides a self-locking steel pipe pile offshore transport base by arranging a quadrilateral self-locking unit on the base. The quadrilateral self-locking unit serves as a connecting part between the baffle and the pile holding unit and has a conversion force. When the transport barge encounters adverse weather conditions that cause the ship to tilt, pitch up, or plunge down, there will be a sliding or relative sliding tendency between the pile holding unit and the steel pipe pile, and the steel pipe pile will generate a thrust on the baffle. Based on the deformation ability of the quadrilateral component of the self-locking unit, the thrust will generate an inward pulling force on the two pile holding units through the self-locking unit, thereby forming a trend of moving closer, increasing the holding force of the pile holding unit on the steel pipe pile, making it difficult for the steel pipe pile to slide relatively, forming a self-locking effect, ensuring that the steel pipe pile can be firmly fixed on the transport barge, and is not prone to slipping during transportation, thereby ensuring transportation safety.
[0023] The utility model provides a self-locking steel pipe pile offshore transportation base with the advantages of reasonable structure, easy manufacturing, strong self-locking ability, and easy installation. It can be widely used for fixing offshore wind power steel pipe piles during transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0025] Figure 1 A schematic structural diagram of a self-locking steel pipe pile offshore transport base provided by an embodiment of the present utility model;
[0026] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the self-locking unit;
[0027] Figure 3 for Figure 2 A schematic structural diagram of the first self-locking rod;
[0028] Figure 4 for Figure 1 An enlarged structural diagram of the middle limit unit;
[0029] Figure 5 for Figure 1 A schematic diagram of the partially enlarged structure of the connection between the middle self-locking unit and the baffle;
[0030] Figure 6 for Figure 1 A schematic diagram of the partially enlarged structure of the connection between the middle self-locking unit and the base plate.
[0031] Among them, the reference numerals in the figures are:
[0032] 1. Base plate, 21. First pile-holding unit, 22. Second pile-holding unit, 3. Baffle, 41. First self-locking rod, 42. Second self-locking rod, 43. Third self-locking rod, 44. Fourth self-locking rod, 51. First limiting unit, 52. Second limiting unit, 53. Third limiting unit, 54. Fourth limiting unit, 101. Slide, 611. First connecting plate, 612. Second connecting plate, 613. First bolt, 641. Second bolt. DETAILED DESCRIPTION
[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0034] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0035] It should be understood that the terms "length", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the present invention.
[0036] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise.
[0037] The terms "first" and "second" are used solely for descriptive purposes, to distinguish objects, such as substances, from one another, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. For example, a first XX could also be referred to as a second XX, and similarly, a second XX could also be referred to as a first XX, without departing from the scope of the embodiments of the present invention. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features.
[0038] See also Figures 1-6 Now, a self-locking steel pipe pile offshore transportation base provided by an embodiment of the present invention is described.
[0039] In one embodiment of the present invention, a self-locking steel pipe pile offshore transport base of the embodiment of the present invention includes a base plate 1, a pile holding unit, a baffle 3, a quadrilateral self-locking unit and a limiting unit, and the quadrilateral self-locking unit is axially symmetrical about the central axis of the steel pipe pile. A slide groove 101 is provided on the base plate 1, and the pile holding unit is slidably connected in the slide groove 101; the pile holding unit includes two symmetrically arranged first pile holding units 21 and second pile holding units 22; the first pile holding unit 21 and the second pile holding unit 22 are provided with an arc surface that contacts the steel pipe pile; the baffle 3 is connected to the base plate 1; the quadrilateral self-locking unit includes a first self-locking rod 41, a third self-locking rod 43, a second self-locking rod 42 and a fourth self-locking rod 44 connected in sequence; the four corner points of the self-locking unit are respectively connected to the baffle 3, the first pile holding unit 21, the base plate 1 and the second pile holding unit 22; the first self-locking rod 41, the third self-locking rod 43, the second self-locking rod 42 and the fourth self-locking rod 44 are all rotatably connected to each other; the limiting unit includes a first limiting unit 51 and a second limiting unit 52; the first limiting unit 51 and the second limiting unit 52 respectively abut against one side of the first pile holding unit 21 and the second pile holding unit 22.
[0040] During use, a self-locking steel pipe pile offshore transport base according to an embodiment of the present invention secures the base plate 1 to the ship's deck by welding or bolting. The bottom surface of the pile-holding unit is located within the chute 101 of the base plate 1. The pile-holding unit is only allowed to slide along the chute 101 relative to the base plate 1, while remaining fixed in all other directions. A first limiting unit 51 and a second limiting unit 52 are disposed on the outside of the pile-holding unit. After the positions of the first and second pile-holding units 21 and 22 on the base plate 1 are determined, the first and second limiting units 51 and 52 are positioned at predetermined positions and then secured. The securing method may employ a toothed groove or hydraulic system, so that the first and second limiting units 51 and 52 limit the positions of the first and second pile-holding units 21 and 22, preventing them from sliding further outward within the chute 101. Then, the steel pipe pile is placed on the base, and the pile end section of the steel pipe pile is parallel to the plane of the baffle 3, and the baffle 3 is in contact with the lower edge of the pile end section of the steel pipe pile to limit the sliding of the steel pipe pile along the pile body direction.
[0041] Specifically, in this embodiment, the first limiting unit 51, the second limiting unit 52 and the base plate 1 can be fixed by teeth and grooves. For example, several teeth and grooves can be arranged at intervals on the base plate 1, and the first limiting unit 51 and the second limiting unit 52 are provided with connecting parts that cooperate with the teeth and grooves for positioning. When the first limiting unit 51 and the second limiting unit 52 are moved to the position where the teeth and grooves are provided on the base plate 1, they can be positioned with the base plate 1 through the teeth and grooves; or when the first limiting unit 51 and the second limiting unit 52 are moved to the predetermined position on the base plate 1, the first limiting unit 51 and the second limiting unit 52 are fixed at the predetermined position on the base plate 1 by using hydraulic equipment to prevent the first limiting unit 51 and the second limiting unit 52 from moving, so as to limit the first pile holding unit 21 and the second pile holding unit 22.
[0042] In this embodiment, the self-locking unit is composed of 4 rods. Preferably, each rod is of equal length to form a diamond shape. The rods are connected by bolts and can rotate freely around the connection points. Figure 2 As shown. The length of each rod is generally 1-2m, which can be adjusted accordingly according to the diameter of the transported steel pipe pile. Among the four corner points of the rhombus, two relative corner points are fixedly connected to the first pile holding unit 21 and the second pile holding unit 22, one corner point is fixedly connected to the baffle 3, and one corner point is fixedly connected to the bottom plate 1. When the steel pipe pile tends to slide relative to the base, the steel pipe pile will generate a thrust on the baffle 3, and this thrust will generate an inward pulling force on the first pile holding unit 21 and the second pile holding unit 22 through the self-locking unit, thereby forming a tendency to move closer, increasing the holding force of the pile holding unit on the steel pipe pile. The greater the sliding tendency of the steel pipe pile relative to the base, the greater the holding force of the pile holding unit on the steel pipe pile, and the less likely it is to slide relative to each other, forming a self-locking effect.
[0043] In this embodiment, the base plate 1 is a thick steel plate with a slide groove 101. Preferably, two slide grooves 101 are arranged in parallel on the base plate 1. The lower side of the first pile holding unit 21 and the second pile holding unit 22 is respectively provided with two sliders that slide in cooperation with the two slide grooves 101, so as to facilitate the first pile holding unit 21 and the second pile holding unit 22 to slide smoothly on the base plate 1.
[0044] In this embodiment, the pile-holding unit consists of two triangular steel blocks with curved edges. The curved edges, which approximate a quarter-circle arc, serve as the contact surface for the steel pipe pile. These blocks are securely connected to the base plate 1 and can slide along the slide grooves 101 on the base plate 1, thereby adjusting the distance between the two triangular steel blocks to accommodate steel pipe piles of varying diameters. The baffle 3 is a rectangular steel plate that securely connects to the self-locking unit and transmits force. The self-locking unit consists of four steel rods, with the first and second limiter units 51, 52 being two steel piers.
[0045] Furthermore, the transport base of the embodiment of the present invention further includes a third limiting unit 53 and a fourth limiting unit 54. The third limiting unit 53 and the first limiting unit 51 are provided with a first inclined surface structure that cooperates with each other and is slidably connected. The two sides of the third limiting unit 53 are respectively in contact with the first limiting unit 51 and the first pile-holding unit 21; the fourth limiting unit 54 and the second limiting unit 52 are provided with a second inclined surface structure that cooperates with each other and is slidably connected. The two sides of the fourth limiting unit 54 are respectively in contact with the second limiting unit 52 and the second pile-holding unit 22. Figure 4 That is, the third limiting unit 53 has the same inclination angle as the first limiting unit 51 , and the fourth limiting unit 54 has the same inclination angle as the second limiting unit 52 .
[0046] Furthermore, the third limiting unit 53 and the fourth limiting unit 54 are wedge-shaped blocks, which can be steel wedge-shaped blocks. That is, in this embodiment, the third limiting unit 53 and the fourth limiting unit 54 are two steel wedge-shaped sliders. Thus, the limiting units of this embodiment are composed of two steel piers and two steel wedge-shaped sliders. The limiting units are divided into two groups, one steel pier and one steel wedge-shaped slider. The first limiting unit 51 and the third limiting unit 53 form one group, and the second limiting unit 52 and the fourth limiting unit 54 form one group. Each group is arranged outside the first pile-holding unit 21 and the second pile-holding unit 22, respectively. The steel piers can move on the surface of the base plate 1 and are fixed in place after moving to a predetermined position. When the steel pipe pile slides relative to the base, the self-locking unit pulls the first pile holding unit 21 and the second pile holding unit 22 inward, causing the distance between the pile holding unit and the steel pier (the first limiting unit 51 and the second limiting unit 52) to increase, and the steel wedge-shaped sliders (the third limiting unit 53 and the fourth limiting unit 54) immediately slide down to fill the gap, limiting the pile holding unit from sliding outward and returning to its original position, thereby consolidating the self-locking effect.
[0047] Furthermore, the first self-locking rod 41, the third self-locking rod 43, the second self-locking rod 42 and the fourth self-locking rod 44 of this embodiment are all connected by bolts and can rotate freely around the connection points. Figure 2 Specifically, the first self-locking rod 41 and the fourth self-locking rod 44 are connected to the baffle 3, the first self-locking rod 41 and the third self-locking rod 43 are connected to the first pile-holding unit 21 with an arc edge, the second self-locking rod 42 and the fourth self-locking rod 44 are connected to the second pile-holding unit 22 with an arc edge, and the second self-locking rod 42 and the third self-locking rod 43 are connected to the base plate 1.
[0048] Furthermore, the first self-locking rod 41, the third self-locking rod 43, the second self-locking rod 42 and the fourth self-locking rod 44 are rods with a male end and a female end. The male end is a single-leaf lock with a round hole, and the female end is a double-leaf lock with a round hole. The male end is inserted into the female end and connected by bolts. Figure 3 shown.
[0049] Furthermore, in this embodiment, the connection mode of the self-locking unit with the first pile holding unit 21, the second pile holding unit 22 and the baffle 3 is the same. The connection mode of the self-locking unit with the baffle 3 is used as an example for explanation. Figure 5 As shown. The baffle 3, the first pile-holding unit 21, and the second pile-holding unit 22 are each provided with a connecting unit, which includes two oppositely arranged first connecting plates 611 and second connecting plates 612. The first connecting plates 611 and the second connecting plates 612 are each provided with bolt mounting holes. The first bolt 613 passes through the bolt mounting holes on the first connecting plates 611 and the second connecting plates 612, and its two ends are fixed with nuts. The first self-locking rod 41, the third self-locking rod 43, the second self-locking rod 42, and the fourth self-locking rod 44 are all rotatably connected to the first bolt 613. Specifically, 611 and 612 are both steel plates with a circular hole in the middle, and are welded to the baffle 3. The male end of the first self-locking rod 41 and the female end of the fourth self-locking rod 44 are aligned with each other and connected by the first bolt 613. The first self-locking rod 41 and the fourth self-locking rod 44 can both rotate around the first bolt 613.
[0050] Furthermore, a second bolt 641 is connected to the bottom plate 1, one end of the second bolt 641 is fixed with a nut, and the third self-locking rod 43 and the second self-locking rod 42 are rotatably connected to the second bolt 641. Figure 6 As shown, the male end of the second self-locking rod 42 and the female end of the third self-locking rod 43 are aligned with each other through the circular hole. The second bolt 641 passes through the circular hole and is fixed to the base plate 1. Both the second self-locking rod 42 and the third self-locking rod 43 can rotate around the second bolt 641. When the steel pipe pile tends to slide relative to the base, the self-locking unit converts the thrust of the steel pipe pile on the baffle into the holding force of the pile holding unit on the steel pipe pile. The greater the sliding tendency of the steel pipe pile relative to the base, the greater the holding force of the pile holding unit on the steel pipe pile, making relative sliding less likely, thus forming a self-locking effect.
[0051] The self-locking steel pipe pile offshore transport base of the present invention improves upon the existing steel pipe pile offshore transport base by adding a self-locking unit. The self-locking unit is composed of four steel rod ends connected in sequence by bolts to form a diamond-shaped assembly. The self-locking unit, as the connecting portion between the baffle 3 and the pile-holding unit, functions to convert force. When the transport barge encounters adverse weather conditions that cause the ship to tilt, pitch up, or plunge, the pile-holding unit and the steel pipe pile will experience a tendency to slide or slide relative to each other. Based on the deformability of the self-locking unit's diamond-shaped assembly, the thrust of the steel pipe pile on the baffle 3 is converted into a gripping force between the pile-holding unit and the steel pipe pile. Combined with the position limiting unit, the self-locking effect is achieved, ensuring that the steel pipe pile can be securely fixed to the transport barge under adverse marine weather conditions, preventing slippage during transportation and ensuring safe transportation. Furthermore, considering that the diameters of the transported steel pipe piles may vary, the spacing between the two pile-holding units can be adjusted within a certain range, thereby increasing the applicability of the base of the present invention.
[0052] The self-locking steel pipe pile offshore transportation base of the embodiment of the present invention has the advantages of reasonable structure, easy manufacturing, strong self-locking ability, and easy installation, and can be widely used for fixing offshore wind power steel pipe piles during transportation.
[0053] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. A self-locking steel pipe pile offshore transport base, characterized in that: include: a bottom plate having a slide groove thereon; A pile holding unit is slidably connected in the chute; the pile holding unit comprises two symmetrically arranged first pile holding units and a second pile holding unit; the first pile holding unit and the second pile holding unit are provided with an arc surface in contact with the steel pipe pile; a baffle connected to the bottom plate; The quadrilateral self-locking unit includes a first self-locking rod, a third self-locking rod, a second self-locking rod, and a fourth self-locking rod connected in sequence; the four corner points of the self-locking unit are respectively connected to the baffle, the first pile-holding unit, the bottom plate, and the second pile-holding unit; the first self-locking rod, the third self-locking rod, the second self-locking rod, and the fourth self-locking rod are all rotatably connected to each other; as well as, The limiting unit includes a first limiting unit and a second limiting unit; the first limiting unit and the second limiting unit are respectively abutted against one side of the first pile-holding unit and the second pile-holding unit.
2. A self-locking steel pipe pile offshore transport base as claimed in claim 1, characterized in that: It also includes a third limiting unit and a fourth limiting unit, the third limiting unit and the first limiting unit are provided with a first inclined surface structure that cooperates with each other and is slidably connected, and the two sides of the third limiting unit are respectively abutted against the first limiting unit and the first pile-holding unit; the fourth limiting unit and the second limiting unit are provided with a second inclined surface structure that cooperates with each other and is slidably connected, and the two sides of the fourth limiting unit are respectively abutted against the second limiting unit and the second pile-holding unit.
3. The self-locking steel pipe pile offshore transport base according to claim 2, characterized in that: The third limiting unit and the fourth limiting unit are wedge-shaped blocks.
4. The self-locking steel pipe pile offshore transport base according to claim 1, characterized in that: The first self-locking rod, the third self-locking rod, the second self-locking rod and the fourth self-locking rod are all connected by bolts and can rotate freely around the connection points.
5. The self-locking steel pipe pile offshore transport base according to claim 4, characterized in that: The first self-locking rod, the third self-locking rod, the second self-locking rod and the fourth self-locking rod are all rods with a male head at one end and a female head at the other end. The male head is a single-leaf lock with a round hole, and the female head is a double-leaf lock with a round hole. The male head is inserted into the female head and connected by bolts.
6. The self-locking steel pipe pile offshore transport base according to claim 5, characterized in that: The baffle, the first pile-holding unit and the second pile-holding unit are all provided with a connecting unit, and the connecting unit includes two oppositely arranged first connecting plates and second connecting plates, and the first connecting plates and the second connecting plates are both provided with bolt mounting holes; the first bolt passes through the bolt mounting holes on the first connecting plates and the second connecting plates, and its two ends are fixed with nuts; the first self-locking rod, the third self-locking rod, the second self-locking rod and the fourth self-locking rod are all rotatably connected to the first bolt.
7. The self-locking steel pipe pile offshore transport base according to claim 5, characterized in that: The bottom plate is connected with a second bolt, one end of the second bolt is fixed with a nut, and the third self-locking rod and the second self-locking rod are rotatably connected to the second bolt.
8. A self-locking steel pipe pile offshore transport base according to any one of claims 1 to 7, characterized in that: The self-locking unit is rhombus-shaped.
9. A self-locking steel pipe pile offshore transport base according to any one of claims 1 to 7, characterized in that: The sliding grooves are provided in parallel with each other on the bottom plate.
10. A self-locking steel pipe pile offshore transport base according to any one of claims 1 to 7, characterized in that: The limiting unit and the base plate are fixed via teeth and grooves; or the limiting unit is fixed to the base plate via hydraulic equipment.