A sacrificial anode cage device for underwater pile foundation

Abstract

The invention relates to a sacrificial anode cage device for an underwater pile foundation, comprising a cage frame, a sacrificial anode block, and a plurality of bracket mechanisms and a plurality of dovetail buckles, wherein the plurality of bracket mechanisms are arranged in a circle around the outer wall of the pile foundation and are fixed in advance, the bracket mechanism comprises a seat plate and a support beam located below the seat plate, the support beam is arranged radially along the pile foundation, the upper side of the seat plate is provided with a guide limit surface, the inner side of the guide limit surface is higher than the outer side, and smoothly extends from the inner side to the outer side, the cage frame comprises two upper and lower transverse annular beams, the cage frame is sleeved on the pile foundation, and the lower end annular beam is pressed against the guide limit surface, the dovetail buckle comprises a dovetail clamping plate, and a clamping bolt, the dovetail clamping plate is provided with a dovetail clamping groove facing downwards, the dovetail clamping groove is clamped on the upper side of the support beam, and the clamping bolt is pressed against the lower side of the support beam; the cage frame and the pile foundation are electrically connected through the bracket mechanism and the dovetail buckle.

Description

Technical Field

[0001] The invention relates to the field of offshore construction, and in particular to a sacrificial anode cage device of an underwater pile foundation. Background Art

[0002] In recent years, offshore wind power has been widely promoted and used in my country as a new type of green energy. my country has a vast coastline and rich offshore wind energy resources. Offshore wind power has broad development prospects and commercial value. While offshore wind power is developing rapidly, it is also facing challenges one after another.

[0003] The marine environment is complex and the seawater is highly corrosive, which places high demands on the corrosion protection of offshore structures. The design life of offshore wind power is generally 25 years. At present, the most commonly used corrosion protection measure for offshore structures is the combined corrosion protection of coating + sacrificial anode. The sacrificial anode installation method of the pile foundation of traditional wind turbines is generally to install the sacrificial anode base on the surface of the pile foundation in advance, and then perform underwater welding and installation after the pile sinking operation is completed. This installation method is difficult to construct, has high technical requirements, low construction efficiency, and high cost. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a sacrificial anode cage device for an underwater pile foundation, which has a simple structure, is easy to construct and install, and works stably and reliably.

[0005] To achieve the above-mentioned object, the present invention provides a sacrificial anode cage device for an underwater pile foundation, comprising a cage frame, a sacrificial anode block mounted on the cage frame, and a plurality of corbel mechanisms and a plurality of dovetail buckles corresponding to the corbel mechanisms, wherein the plurality of corbel mechanisms are arranged in a circle around the outer wall of the pile foundation and are pre-fixed on the outer wall of the pile foundation, wherein the corbel mechanisms comprise a seat plate and a support beam located below the seat plate, wherein the support beam is arranged radially along the pile foundation, wherein the upper side of the seat plate has a guide limit surface, wherein the guide limit surface is higher on the inner side close to the pile foundation than on the outer side away from the pile foundation , and extends smoothly from the inside to the outside, the cage frame includes two upper and lower transverse annular beams, and a longitudinal support connecting the two annular beams, the cage frame is mounted on the pile foundation, and the lower end annular beam is pressed against the guide limit surface, the dovetail clip includes a dovetail clamping plate fixed at the lower end of the cage frame, and a clamping bolt installed on the dovetail clamping plate, a downward dovetail clamping groove is provided on the dovetail clamping plate, the dovetail clamping groove is clamped on the upper side of the support beam, and the clamping bolt is against the lower side of the support beam; the cage frame and the pile foundation are conductively connected through a corbel mechanism and a dovetail clip.

[0006] Furthermore, the cross-section of the annular beam of the cage frame is circular, and the guide limiting surface of the seat plate is arc-shaped in the cross-section along the radial direction of the pile foundation.

[0007] Furthermore, the guide limiting surface of the seat plate is arranged to bend and extend along the circumferential direction of the outer wall of the pile foundation.

[0008] Furthermore, an arc-shaped guide ring is fixedly provided on the upper end of the seat plate and is arranged along the circumferential direction of the outer wall of the pile foundation. The outer wall of the arc-shaped guide ring is smoothly connected with the upper end of the guide limit surface, and the outer wall of the arc-shaped guide ring is smoothly connected with the outer wall of the pile foundation.

[0009] Furthermore, the corbel mechanism also includes a supporting side plate connecting the seat plate and the supporting beam, and the supporting side plate is welded to the outer wall of the pile foundation.

[0010] Furthermore, the corbel mechanism also includes a stiffening plate welded to the lower side of the support beam, and the stiffening plate is welded to the outer wall of the pile foundation.

[0011] Furthermore, the dovetail clip also includes a bolt mounting plate fixed on the dovetail clamping plate, the clamping bolts are inserted into the bolt mounting plate, and a conductive structure is connected between the bolt mounting plate and the stiffening plate.

[0012] Furthermore, it also includes a plurality of radial clamping mechanisms arranged at the upper end of the cage frame, and the plurality of radial clamping mechanisms are arranged around the outer wall of the pile foundation. The radial clamping mechanisms include a support seat fixed on the cage frame, and radial clamping bolts screwed on the support seat, and the radial clamping bolts can be screwed until they are supported on the outer wall of the pile foundation.

[0013] Furthermore, an arc-shaped top plate is fixedly provided at the end of the radial clamping bolt, and the arc-shaped top plate is used to be supported on the outer wall of the pile foundation, and the two are in close contact with each other.

[0014] Furthermore, the cage frame is electrically connected to the pile foundation via a radial clamping mechanism.

[0015] As described above, the sacrificial anode cage device according to the present invention has the following beneficial effects:

[0016] By setting the cage frame, sacrificial anode block and dovetail buckle, the bracket mechanism is pre-fixed on the pile foundation, the cage frame, sacrificial anode block and dovetail buckle are manufactured and assembled into a whole on the water, and the cage frame is set on the pile foundation when in use, and the annular beam at the lower end of the cage frame is pressed on the guide limit surface of the seat plate. Through the guidance of the guide limit surface, the cage frame can finally be stably pressed against the guide limit surface, and because the guide limit surface is high inside and low outside, the radial movement of the cage frame can be effectively limited to perform radial limit; the dovetail slot at the lower end of the dovetail clamping plate is clamped on the upper side of the support beam, and the clamping bolt is against the lower side of the support beam to achieve vertical limit for the cage frame; at the same time, due to the clamping cooperation between the dovetail clamping plate and the support beam, the cage frame is not easy to rotate around the pile foundation, and the circumferential limit is achieved. The cage frame and the pile foundation are electrically connected through the bracket mechanism and the dovetail buckle, and the sacrificial anode block can smoothly play a protective role. The sacrificial anode cage device of the present invention has a simple structure, is easy to construct and install, has less underwater workload, has lower risks, greatly reduces the installation cost of the sacrificial anode, shortens the offshore construction period, and the cage frame can be stably fixed in the circumferential, radial and vertical directions, and has stable installation, ensuring that the sacrificial anode block and the pile foundation can be stably connected, and the operation is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the sacrificial anode cage device of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the sacrificial anode cage device of the present invention when viewed from the top of the pile foundation.

[0019] Figure 3 It is a structural schematic diagram of the bracket mechanism in the present invention.

[0020] Figure 4 for Figure 3 Left side view.

[0021] Figure 5 It is a schematic diagram of the cooperation between the dovetail buckle and the corbel mechanism in the present invention.

[0022] Figure 6 for Figure 5 Right side view.

[0023] Figure 7 It is a structural schematic diagram of the radial clamping mechanism in the present invention.

[0024] Figure 8 It is a schematic diagram of the guide limit surface in the present invention being arranged along the circumferential bending of the outer wall of the pile foundation.

[0025] Component number description

[0026] 1 Pile foundation

[0027] 2 sets of cages

[0028] 21 Ring beam

[0029] 22 Longitudinal support

[0030] 3 Sacrificial anode block

[0031] 4. Corbel mechanism

[0032] 41 Seat Plate

[0033] 411 Guide limit surface

[0034] 42 Support beam

[0035] 43 Support side panels

[0036] 44 Stiffener

[0037] 45 Guide ring

[0038] 5 Dovetail buckle

[0039] 51 Dovetail Pallet

[0040] 511 Dovetail Slot

[0041] 52 Clamp bolt

[0042] 53 Bolt Mounting Plate

[0043] 6 Radial clamping mechanism

[0044] 61 Support seat

[0045] 62 Radial clamping bolt

[0046] 63 Curved top plate

[0047] 7 Lifting lugs

[0048] 8 Conductive plate DETAILED DESCRIPTION

[0049] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0050] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0051] See also Figures 1 to 8 The present invention provides a sacrificial anode cage device for an underwater pile foundation, comprising a cage frame 2, and a sacrificial anode block 3 installed on the cage frame 2, and also comprising a plurality of corbel mechanisms 4, and a plurality of dovetail buckles 5 corresponding to the corbel mechanisms 4, wherein the plurality of corbel mechanisms 4 are arranged in a circle around the outer wall of the pile foundation 1 and are pre-fixed on the outer wall of the pile foundation 1, the corbel mechanisms 4 comprise a seat plate 41, and a support beam 42 located below the seat plate 41, the support beam 42 is arranged radially along the pile foundation 1, the seat plate 41 has a guide limit surface 411 on the upper side, the guide limit surface 411 is closer to the inner side of the pile foundation 1 than the outer side away from the pile foundation 1, and the guide limit surface 411 is closer to the inner side of the pile foundation 1 than the outer side of ... The outer side extends smoothly, the cage frame 2 includes two upper and lower transverse annular beams 21, and a longitudinal support 22 connecting the two annular beams 21, the cage frame 2 is mounted on the pile foundation 1, and the lower end annular beam 21 is pressed against the guide limit surface 411, the dovetail clip 5 includes a dovetail clamping plate 51 fixed to the lower end of the cage frame 2, and a clamping bolt 52 installed on the dovetail clamping plate 51, a dovetail clamping groove 511 facing downward is opened on the dovetail clamping plate 51, the dovetail clamping groove 511 is clamped on the upper side of the support beam 42, and the clamping bolt 52 is against the lower side of the support beam 42; the cage frame 2 and the pile foundation 1 are conductively connected through the corbel mechanism 4 and the dovetail clip 5. Among them, the cage frame 2 and the pile foundation 1 are conductively connected through the corbel mechanism 4 and the dovetail buckle 5. This can be achieved by making the relevant components of the corbel mechanism 4 and the dovetail buckle 5 made of conductive metal materials, or by adding an additional conductive structure, or by adopting other existing reasonable methods to ensure smooth conduction between the cage frame 2 and the pile foundation 1.

[0052] The basic working principle of the sacrificial anode cage device of the present invention is as follows: a bracket mechanism 4 is fixed on a pile foundation 1 in advance, and can be installed at an optimal protection height position according to actual engineering calculation results; a cage frame 2, a sacrificial anode block 3 and a dovetail buckle 5 are manufactured and assembled into a whole on water; then the cage frame 2 is sleeved on the pile foundation 1; there is a suitable gap between the annular beam 21 and the pile foundation 1, and the gap is about 40 to 60 mm; the dovetail buckle 5 at the lower end of the cage frame 2 is matched with the bracket mechanism 4 in a one-to-one correspondence; the annular beam 21 at the lower end of the cage frame 2 is pressed on a guide limit surface 411 of a seat plate 41, and slides along the guide limit surface 411 during the descending process; and through the guidance of the guide limit surface 411, the cage frame 2 can finally be stably pressed against the guide limit surface 411, and the spacing between each part and the pile foundation 1 is also relatively uniform. At the same time, since the guide limit surface 411 is higher inside and lower outside, the radial movement of the cage frame 2 can be effectively limited to perform radial limit. When the cage frame 2 is installed in place on the guide limit surface 411, the dovetail slot 511 at the lower end of the dovetail clamping plate 51 is clamped on the upper side of the support beam 42, and then the clamping bolt 52 is installed to abut against the lower side of the support beam 42. Through the clamping action of the dovetail clamping plate 51 and the clamping bolt 52, the cage frame 2 is vertically limited. At the same time, since the dovetail clamping plate 51 is clamped with the support beam 42, the cage frame 2 is not easy to rotate around the pile foundation 1, and the circumferential limit is achieved. After the installation is completed, the cage frame 2 is electrically connected to the pile foundation 1 through the bull leg mechanism 4 and the dovetail buckle 5, and the sacrificial anode block 3 can smoothly play a protective role. The sacrificial anode cage device of the present invention has a simple structure, is easy to construct and install, has less underwater workload and lower risk, greatly reduces the sacrificial anode installation cost, shortens the offshore construction period, and the cage frame 2 can be stably fixed in the circumferential, radial and vertical directions, and is stably installed, ensuring that the sacrificial anode block 3 and the pile foundation 1 can be stably connected and work stably and reliably.

[0053] The sacrificial anode cage device of the present invention can be applied to various underwater pile foundations 1, and in particular can be applied to underwater pile foundations 1 of offshore wind power equipment.

[0054] Figures 1 to 8 A specific embodiment of the present invention is given, and the sacrificial anode cage device of the present invention is further described by taking this embodiment as an example.

[0055] As a preferred design, in this embodiment, see Figure 4 , Figure 5 and Figure 6The cross-section of the annular beam 21 of the cage frame 2 is circular. Specifically, the annular beam 21 is made of a bent round tube. During the lowering and installation process of the cage frame 2, the friction and impact between the cage frame 2 and the outer surface of the foundation can be greatly reduced. In addition, the material is easy to obtain and the construction is convenient. The guide limit surface 411 of the seat plate 41 is arc-shaped in the radial section along the pile foundation 1, so that the guide limit surface 411 and the annular beam 21 can fit perfectly and play a certain vertical support role. The seat plate 41 has a suitable length, and the guide limit surface 411 of the seat plate 41 is arranged to bend and extend circumferentially along the outer wall of the pile foundation 1, and its bending radius is 2 to 5 mm larger than the radius of the annular beam 21, that is, the distance between the guide limit surface 411 and the outer wall of the foundation in the circumferential direction is constant, see Figure 8 As shown, the guide limit surface 411 and the annular beam 21 can fit well, have a large contact area, and further stabilize the cage frame 2. In addition, an arc guide ring 45 is fixedly arranged at the upper end of the seat plate 41 and is arranged along the circumferential bending of the outer wall of the pile foundation 1. The outer wall of the arc guide ring 45 smoothly transitions with the upper end of the guide limit surface 411, and the outer wall of the arc guide ring 45 smoothly transitions with the outer wall of the pile foundation 1. When the cage frame 2 is installed from top to bottom, the cage frame 2 will first be guided by the guide ring 45 and then enter the guide limit surface 411, and the installation process is smooth.

[0056] See also Figure 1 and Figure 2 In the present invention, the number of the corbel mechanism 4 and the dovetail buckle 5 can be determined according to actual needs. In this embodiment, the corbel mechanism 4 and the dovetail buckle 5 are preferably evenly arranged around the pile foundation 1. The longitudinal supports 22 in the cage frame 2 are also evenly arranged in an annular shape, and their number is determined according to actual conditions. Each longitudinal support 22 is fixedly mounted with 1 to 3 sacrificial anode blocks 3.

[0057] In this embodiment, as a preferred design, see Figure 3 and Figure 4 The support beam 42 is a section of round tube, and its length direction is along the radial direction of the pile foundation 1. The corbel mechanism 4 also includes a support side plate 43 connecting the seat plate 41 and the support beam 42, and a stiffening plate 44 welded to the lower side of the support beam 42. The support side plate 43 is welded to the seat plate 41 and the support beam 42. The support beam 42, the support side plate 43 and the stiffening plate 44 are all welded to the outer wall of the pile foundation 1, thereby ensuring the overall firmness of the corbel mechanism 4 and being able to more stably bear the weight of the cage frame 2. All components in the corbel mechanism 4 are made of conductive metal materials.

[0058] In this embodiment, as a preferred design, see Figure 5 and Figure 6The dovetail clip 5 also includes a bolt mounting plate 53 fixed on the dovetail clip plate 51, and the clamping bolt 52 is transversely inserted into the bolt mounting plate 53 and is located at the opening of the dovetail clip slot 511, wherein the clamping bolt 52 can be installed on the bolt mounting plate 53 by a nut, or can be directly threadedly connected with the bolt mounting plate 53. The dovetail clip plate 51, the bolt mounting plate 53 and the clamping bolt 52 in the dovetail clip 5 are all made of conductive metal materials, so that the dovetail clip 5 and the bracket mechanism 4 are electrically connected through the contact between the dovetail clip plate 51 and the support beam 42, and the contact between the clamping bolt and the support beam 42.

[0059] In this embodiment, preferably, a conductive structure is also connected between the bolt mounting plate 53 of the dovetail buckle 5 and the stiffening plate 44 of the bull foot mechanism, and the conductive structure includes two connected conductive plates 8, one of which is fixed to the bolt mounting plate 53 by a clamping bolt 52, and the other conductive plate 8 is connected to the bolt hole reserved on the stiffening plate 44 by bolts, thereby increasing the conductive path between the dovetail buckle 5 and the bull foot mechanism 4 through the two conductive plates 8, and the connection is firm, and the conductive path is stable and reliable.

[0060] See also Figure 1 , Figure 2 and Figure 7 In this embodiment, the sacrificial anode cage device also includes a plurality of radial clamping mechanisms 6 arranged at the upper end of the cage frame 2. The plurality of radial clamping mechanisms 6 are evenly arranged around the outer wall of the pile foundation 1. The radial clamping mechanism 6 includes a support seat 61 fixed on the cage frame 2 and a radial clamping bolt 62 screwed on the support seat 61. The radial clamping bolt 62 can be screwed to support the outer wall of the pile foundation 1. The support seat 61 is welded and fixed on the annular beam 21. The radial clamping bolt 62 can be installed on the support seat 61 by double nuts or directly threaded. Before the cage frame 2 is lowered, the radial clamping bolt 62 is rotated to keep a distance of 40 to 60 mm from the pile wall to ensure that the cage frame 2 can be smoothly lowered; when the cage frame 2 reaches the designated installation position, the radial clamping bolt 62 is rotated to support the outer wall of the pile foundation 1 to achieve a further radial limit effect. Furthermore, an arc-shaped top plate 63 is fixedly provided at the end of the radial clamping bolt 62. The arc-shaped top plate 63 is designed according to the size of the pile foundation 1. The arc-shaped top plate 63 is used to support the outer wall of the pile foundation 1, and the two are kept in close contact, thereby further improving stability and reducing damage to the pile foundation 1.

[0061] In this embodiment, further, the support seat 61 , the radial clamping bolts 62 and the arc-shaped top plate 63 in the radial clamping mechanism 6 are also made of conductive metal materials, so that the cage frame 2 and the pile foundation 1 can still be connected through the radial clamping mechanism 6 .

[0062] As a preferred design, see Figure 1 and Figure 2 A plurality of lifting ears 7 are evenly fixed on the annular beam 21 at the upper end of the cage frame 2. During specific operation, one of the lifting ears 7 can be used for holding weight, and the other two lifting ears 7 are used to adjust the position of the cage frame 2, thereby ensuring that the cage frame 2 can be accurately positioned.

[0063] As can be seen from the above, the sacrificial anode cage structure in this embodiment has the following beneficial effects:

[0064] 1) Simple structure, easy manufacturing, strong applicability, can be promoted and used on a large scale, and low manufacturing cost.

[0065] 2) Offshore construction and installation are convenient. During underwater installation, only simple operations such as tightening bolts are required, eliminating tedious work such as underwater welding. The underwater workload is less and the risk is lower, which effectively shortens the construction period and reduces the project cost.

[0066] 3) It can be installed in the best protection position according to the actual engineering calculation results, and the top and bottom can be electrically connected, which greatly improves the protection effect of the sacrificial anode on the pile foundation.

[0067] 4) The limiting structure is considered in the circumferential, radial and vertical directions, and the operation is stable and reliable, ensuring that the sacrificial anode cage device remains stable and safe under the complex marine environment load.

[0068] In summary, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A sacrificial anode cage device for an underwater pile foundation, comprising a cage frame (2) and a sacrificial anode block (3) mounted on the cage frame (2), characterized in that: The invention also comprises a plurality of corbel mechanisms (4) and a plurality of dovetail buckles (5) corresponding to the corbel mechanisms (4). The plurality of corbel mechanisms (4) are arranged in a circle around the outer wall of the pile foundation (1) and are pre-fixed on the outer wall of the pile foundation (1). The corbel mechanisms (4) comprise a seat plate (41) and a support beam (42) located below the seat plate (41). The support beam (42) is arranged radially along the pile foundation (1). The seat plate (41) has a guide limit surface (411) on its upper side. The guide limit surface (411) is higher on the inner side close to the pile foundation (1) than on the outer side away from the pile foundation (1), and is parallel to the outer side from the inner side to the outer side. The bracket mechanism (4) further comprises a supporting side plate (43) connecting the seat plate (41) and the supporting beam (42), and the supporting side plate (43) is welded to the outer wall of the pile foundation (1); the seat plate (41), the supporting beam (42) and the supporting side plate (43) of the bracket mechanism (4) are all made of conductive metal materials; the cage frame (2) comprises two upper and lower transverse annular beams (21) and a longitudinal support (22) connecting the two annular beams (21); the cage frame (2) is sleeved on the pile foundation (1), and the lower end annular beam (21) is pressed against the guide limit surface (411); the sleeve The cross section of the annular beam (21) of the cage (2) is circular, and the guide limit surface (411) of the seat plate (41) is arc-shaped in the radial cross section of the pile foundation (1); the guide limit surface (411) of the seat plate (41) is arranged to bend and extend along the circumferential direction of the outer wall of the pile foundation (1); the upper end of the seat plate (41) is also fixedly provided with an arc-shaped guide ring (45) arranged to bend and extend along the circumferential direction of the outer wall of the pile foundation (1), the outer wall of the arc-shaped guide ring (45) is smoothly transitioned to the upper end of the guide limit surface (411), and the outer wall of the arc-shaped guide ring (45) is smoothly transitioned to the outer wall of the pile foundation (1); the The tail clip (5) comprises a dovetail clip plate (51) fixed to the lower end of the cage frame (2), and a clamping bolt (52) installed on the dovetail clip plate (51); the dovetail clip plate (51) is provided with a dovetail clip groove (511) facing downwards, the dovetail clip groove (511) is clamped on the upper side of the support beam (42), and the clamping bolt (52) is against the lower side of the support beam (42); the dovetail clip plate (51) and the clamping bolt (52) of the dovetail clip (5) are both made of conductive metal materials; the cage frame (2) and the pile foundation (1) are conductively connected via a corbel mechanism (4) and the dovetail clip (5).

2. The sacrificial anode cage device according to claim 1, characterized in that: The bracket mechanism (4) further comprises a stiffening plate (44) welded to the lower side of the support beam (42), and the stiffening plate (44) is welded to the outer wall of the pile foundation (1).

3. The sacrificial anode cage device according to claim 1, characterized in that: The dovetail buckle (5) further comprises a bolt mounting plate (53) fixed on the dovetail clamping plate (51), the clamping bolts (52) are inserted into the bolt mounting plate (53), and a conductive structure is connected between the bolt mounting plate (53) and the stiffening plate (44).

4. The sacrificial anode cage device according to claim 1, characterized in that: It also includes a plurality of radial clamping mechanisms (6) arranged at the upper end of the cage frame (2), and the plurality of radial clamping mechanisms (6) are arranged in a circle around the outer wall of the pile foundation (1), the radial clamping mechanisms (6) including a support seat (61) fixed on the cage frame (2), and radial clamping bolts (62) screwed on the support seat (61), and the radial clamping bolts (62) can be screwed until they are supported on the outer wall of the pile foundation (1).

5. The sacrificial anode cage device according to claim 4, characterized in that: An arc-shaped top plate (63) is fixedly provided at the end of the radial clamping bolt (62), and the arc-shaped top plate (63) is used to support the outer wall of the pile foundation (1), and the two are in close contact with each other.

6. The sacrificial anode cage device according to claim 4, characterized in that: The cage frame (2) is electrically connected to the pile foundation (1) via a radial clamping mechanism (6).

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