CN114703909A - A kind of offshore wind turbine type foundation model test sinking auxiliary device and using method - Google Patents

Abstract

The invention discloses a subsidence auxiliary device for an offshore wind turbine type foundation model test and a method for using the same. The upper part of the tubular foundation structure model is detachably connected with a subsidence auxiliary mechanism, and the subsidence auxiliary mechanism comprises monitoring components arranged in sequence from top to bottom, A driving assembly and a grabbing assembly; also include a specific use method of the device; the device provided by the present invention is a sinking auxiliary device specially developed for the offshore wind turbine type foundation model test. Compared with the traditional method, the device and its use method The sinking stability and controllability of the tubular foundation structure model can be significantly improved, and the risk of eccentricity during the sinking process of the tubular foundation structure model can be significantly reduced. The device is simple in structure, practical and convenient, and easy to adjust, and is suitable for cylindrical basic models of various sizes.

Description

A kind of offshore wind turbine type foundation model test sinking auxiliary device and using method

technical field

The invention relates to the technical field of indoor model testing of offshore wind turbine-type foundations, in particular to an auxiliary device for sinking an offshore wind-torch-type foundation model test and a method for using the same.

Background technique

In recent years, combined with the offshore wind conditions and engineering geological characteristics of my country, a new type of offshore wind turbine foundation that is convenient for construction, has strong anti-overturning ability, and is suitable for a variety of foundation soils has been developed and widely used in my country's coastal wind power development. Indoor model test is one of the main technical means to study many scientific and technological problems such as the response characteristics of this new type of base bearing. Usually, such indoor test models generally include a seabed foundation model and a tubular foundation structure model. After the two are prefabricated separately, the tubular foundation structure model needs to be inserted into the seabed foundation model to a preset position before further testing. Research. Whether the cylindrical base structure model can maintain the ideal posture during the insertion process without offset or rotation, and whether the posture of the cylindrical base structure can be corrected in time after the insertion of the cylindrical base structure is important for the scientificity and accuracy of the indoor model test results. Sex has a significant direct impact.

At present, due to the lack of professional leveling equipment, the testers mostly rely on operational experience, take visual inspection and other methods, use simple equipment or manually press the cylindrical foundation structure model to the seabed foundation model, and also use simple equipment or manual adjustment. The inserted cylindrical base structure model is subjected to pose correction. Obviously, this operation method will cause the actual posture of the structural model to be different from the expected, and the size of the error depends heavily on the operating experience of the tester, which often results in the failure of one-time insertion of the cylindrical basic structure.

With the deepening of research on the foundation of offshore wind turbines, the adverse effects of the above operating methods cannot be ignored. In order to meet the needs of the high-precision model test of the offshore wind turbine type foundation at this stage, it is inevitable to develop a professional sinking auxiliary device.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an auxiliary device for subsidence of an offshore wind turbine type foundation model test and a method of use, so as to solve the problems existing in the above-mentioned prior art.

In order to achieve the above purpose, the present invention provides the following solutions: the present invention provides an auxiliary device for subsidence of an offshore wind turbine type foundation model test, including a tubular foundation structure model and a computer, and the upper part of the tubular foundation structure model is detachably connected with a A sinking auxiliary mechanism, the sinking auxiliary mechanism includes a monitoring component, a driving component and a grabbing component arranged in sequence from top to bottom;

The monitoring assembly includes several groups of laser displacement sensors, and each group of the laser displacement sensors is electrically connected with a monitoring data acquisition system;

The driving assembly includes several groups of hydraulic telescopic rods, and the several groups of the hydraulic telescopic rods are connected with hydraulic pumps; the driving assembly further includes a pneumatic pump, and the pneumatic pump communicates with the grabbing assembly;

The grabbing assembly includes a transition section grabbing member and a barrel surface grabbing member.

Preferably, the monitoring assembly further includes a first steel plate, and a plurality of groups of first holes for installing the laser displacement sensor are opened on the first steel plate, and the number of the first holes is the same as that of the laser displacement sensor. The number is the same; four groups of support legs are arranged under the first steel plate, and the four groups of the support legs are respectively corresponding to the four corners of the first steel plate; wherein, the support legs are used to support and fix the entire monitoring assembly , the spacing of the support legs is designed according to the size of the model box; the support legs need to be fixed on the outside of the model box to ensure the absolute stability of the monitoring components; among them, the first steel plate needs to be provided with a number of first holes as a laser displacement sensor The laser transmission channel; wherein, the laser displacement sensor is arranged above the first hole of the first steel plate, and the monitoring data is transmitted to the monitoring data acquisition system through the data line, and then transmitted to the computer.

Preferably, the drive assembly further includes a second steel plate, and a plurality of groups of second holes are formed on the second steel plate, each group of the second holes is threadedly connected with each group of the hydraulic telescopic rods, and each group of the hydraulic A first hydraulic hose is communicated between the telescopic rod and the hydraulic pump; the hydraulic pump is connected with the computer through a data cable; the hydraulic telescopic rod is connected with the hydraulic pump through the first hydraulic hose; the computer realizes the hydraulic telescopic rod by controlling the hydraulic pump elongation and compression.

The second steel plate is provided with a third hole, the inside of the third hole is detachably connected with a pneumatic hose, one end of the pneumatic hose is communicated with the pneumatic pump, and the other end of the pneumatic hose is communicated with a cylinder The air pressure pump is connected with the computer through a data cable; the rubber suction cup in the cylinder surface grabbing component is connected with the air pressure pump through the air pressure hose; the computer realizes the air extraction and air supply of the rubber suction cup by controlling the air pressure pump; the second The steel plate is fixed on the top of the model box, and the steel plate also needs to be provided with a number of second holes and third holes, which are used as the laser transmission channel of the laser displacement sensor, and the embedded channel of the hydraulic telescopic rod and the air pressure hose;

Preferably, the hydraulic telescopic rod comprises a steel casing, the steel casing is a hollow sleeve with a closed top and an open bottom, and the outer circumference of the steel casing is engraved with a hole matching the second hole. Thread; a connecting shaft is threadedly connected inside the steel casing, the connecting shaft is a hollow sleeve with a closed top and an open bottom, and a push rod is detachably connected inside the connecting shaft, and the push rod is close to the connecting shaft A set of hydraulic chambers are arranged between the end of the connecting shaft and the inner end face of the connecting shaft, and the hydraulic chambers communicate with the hydraulic pump through a first hydraulic hose. The steel shell is a hollow sleeve with an opening at the bottom, with threads on the outside for connecting with the first steel plate, and threads on the inside for connecting with the connecting shaft; the connecting shaft is provided with threads on the outside, and the inside is hollow for inserting the push rod. .

Preferably, the transition section grabbing member includes a rubber sealing sheet, the rubber sealing sheet is annular, and a rubber water bladder is connected inside the rubber sealing sheet, the rubber water bladder is annular, and the rubber water bladder is annular. The sealing sheet is adapted to the rubber water bag; the upper part of the rubber water bag is connected with two sets of second hydraulic hoses, the two sets of second hydraulic hoses are symmetrically arranged about the center of the rubber water bag, and the two sets of second hydraulic hoses are arranged symmetrically with respect to the center of the rubber water bag. The second hydraulic hoses are all communicated with the hydraulic pump; the annular rubber sealing sheet is used to protect the transition section of the cylindrical base model; the annular rubber water bladder is located on the upper part of the rubber sealing sheet, and is connected to the It performs water injection and pumping to realize the fitting or separation with the surface of the transition section of the cylindrical base model, that is, to grasp the transition section components of the cylindrical base model; the annular steel top cover is buckled above the rubber water bladder, The top of the top cover is connected with the connecting rod through threads; the two sides of the circular steel top cover are provided with through holes for the arrangement of the air pressure hoses.

The upper part of the rubber sealing sheet is overlapped with a top cover, and the top cover is made of steel; several groups of connecting rods are fixedly arranged on the upper part of the top cover at equal intervals in the circumferential direction, and the interiors of the several groups of the connecting rods are all hollow structures. The top of the connecting rod is communicated with the hydraulic telescopic rod; the upper part of the top cover is symmetrically provided with a through hole with respect to the center of the top cover, and the second hydraulic hose passes through the through hole.

Preferably, the cylinder surface grabbing member includes a rubber suction cup, the outside of the rubber suction cup is communicated with the air pressure hose, and a protective shell is sleeved outside the rubber suction cup; the protective shell is communicated with the connecting rod. The pneumatic pump realizes the grasping of the cylindrical foundation model by extracting the air between the rubber suction cup and the top surface of the cylindrical foundation; the steel casing is connected with the hydraulic telescopic rod through the connecting rod.

Preferably, the top cover is in the shape of a circular ring, and six groups of the connecting rods are provided, and the six groups of the connecting rods are arranged symmetrically in a hexagonal shape with respect to the center of the top cover.

Preferably, the pneumatic pump, the hydraulic pump and the monitoring data acquisition system are all electrically connected to the computer.

A method for using a sinking auxiliary device for an offshore wind turbine type foundation model test, comprising the following steps:

a) After installing and connecting all parts, first make the cylinder surface grab member contact with the cylinder surface of the cylinder base model, turn on the air pump, and extract the air in the rubber suction cup until the cylinder base model is successfully grasped;

b) Sleeve the transition section grabbing members into the transition section of the cylindrical base model in turn, and then turn on the monitoring components to obtain the initial vertical distance between each laser displacement sensor and the cylindrical base surface;

c) Turn on the hydraulic pump, and adjust the telescopic amount of each hydraulic telescopic rod in turn, until the error between the vertical distance between each laser displacement sensor and the cylindrical base surface is less than 1%;

d) Through the hydraulic pump, inject water into the annular rubber water bladder in the grasping member of the transition section until the rubber water bladder and the curved surface of the transition section are fitted together, and after grasping the transition section of the cylindrical foundation model, repeat the process. step (c);

e) Through the hydraulic pump, the liquid is injected into all the hydraulic telescopic rods at a constant velocity, so that all the hydraulic telescopic rods are extended synchronously;

f) Monitor the sinking posture of the cylindrical foundation model through the monitoring component, until the cylindrical foundation model sinks to the design position, pump water to the annular rubber water bladder in the grasping member of the transition section, and remove the grasping member of the transition section. Take the component and repeat step (c) again to level the model;

g) Inject air into all rubber suction cups, and at the same time, carry out isokinetic liquid extraction to all hydraulic telescopic rods through a hydraulic pump, so that all hydraulic telescopic rods shrink synchronously, and remove the cylinder surface grabbing member.

The invention discloses the following technical effects: the equipment provided by the invention is a sinking auxiliary device specially developed for the test of the offshore wind turbine type foundation model. Compared with the traditional method, the device and the using method thereof can significantly improve the tubular foundation structure model The stability and controllability of the sinking can significantly reduce the risk of eccentricity during the sinking of the tubular foundation structure model. The device is simple in structure, practical and convenient, and easy to adjust, and is suitable for cylindrical basic models of various sizes.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

1 is a schematic diagram of the overall structure of the sinking auxiliary device of the present invention;

Figure 2 is a three-dimensional view of the monitoring assembly of the present invention;

Figure 3 is a schematic diagram of the positional relationship between the model box and the monitoring components;

Fig. 4 is the second steel plate structure schematic diagram of the present invention;

5 is a schematic diagram of the positional relationship of the hydraulic telescopic rod according to the present invention;

6 is a schematic structural diagram of a hydraulic rod of the present invention;

FIG. 7 is a schematic structural diagram of the grasping assembly of the present invention;

Figure 8 is a schematic diagram of the structure of the connecting rod of the present invention;

Fig. 9 is a schematic diagram of the structure of the rubber water bladder of the present invention;

10 is a schematic structural diagram of the rubber sealing sheet of the present invention;

11 is a schematic structural diagram of the rubber suction cup of the present invention;

FIG. 12 is a schematic diagram of the positional relationship between the protective casing and the connecting rod according to the present invention.

Among them: 1. Monitoring component; 11. Support leg; 12. First steel plate; 13. First hole; 131, Through hole; 132, Model box; 14, Laser displacement sensor; 15, Second hole; Hole; 2. Drive assembly; 21. Second steel plate; 22. Hydraulic telescopic rod; 23. Steel casing; 24. Connecting shaft; 25. Hydraulic chamber; 26. Push rod; 27. Thread; 3. Grabbing assembly; 31. Transition section grabbing member; 32. Cylinder surface grabbing member; 33. Rubber sealing sheet; 34. Rubber water bladder; 35. Top cover; 36. Protective shell; 37. Rubber suction cup; ;5. Data cable;6.Monitoring data acquisition system;7.Pneumatic hose;8.Pneumatic pump;9.First hydraulic hose;901.Second hydraulic hose;10.Hydraulic pump;111.Computer;222 ,Connecting rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

1-12, the present invention provides an offshore wind turbine type foundation model test sinking auxiliary device, including a tubular foundation structure model 4 and a computer 111, the upper part of the tubular foundation structure model 4 is detachably connected with a sinking auxiliary mechanism, The sinking auxiliary mechanism includes a monitoring component 1, a driving component 2 and a grabbing component 3 arranged in sequence from top to bottom; the equipment provided by the present invention is a sinking auxiliary device specially developed for the offshore wind turbine type foundation model test. The traditional method, the device and the use method thereof can significantly improve the sinking stability and controllability of the tubular foundation structure model 4, and can significantly reduce the risk of eccentricity during the sinking process of the tubular foundation structure model 4. The device is simple in structure, practical and convenient, and easy to adjust, and is suitable for cylindrical basic models of various sizes.

The monitoring assembly 1 includes several groups of laser displacement sensors 14, and each group of the laser displacement sensors 14 is electrically connected to the monitoring data acquisition system 6; the monitoring assembly 1 also includes a first steel plate 12, and several groups are opened on the first steel plate 12 for installing the laser The first holes 13 of the displacement sensor 14, the number of the first holes 13 is the same as the number of the laser displacement sensors 14; four groups of support legs 11 are arranged below the first steel plate 12, corresponding corners. One end of the monitoring assembly 1 is connected to the monitoring data acquisition system 6 and the computer 111 through the data cable 5; the other end is fixed outside the scope of the model box through the support leg 11; during implementation, the monitoring assembly 1 specifically includes the support leg 11 and the first steel plate 12. and a laser displacement sensor 14 ; the laser displacement sensor 14 monitors the spatial position of the cylindrical foundation through the holes on the first steel plate 12 .

The driving assembly 2 includes several groups of hydraulic telescopic rods 22, which are connected to the hydraulic pump 10; the driving assembly 2 also includes a pneumatic pump 8, which is communicated with the grabbing assembly 3; the grabbing assembly 3 includes a transition section grabbing The pickup member 31 and the cylindrical surface grasping member 32 .

The drive assembly 2 also includes a second steel plate 21, on which there are several groups of second holes 15, each group of second holes 15 is connected with each group of hydraulic telescopic rods 22 with threads 27, and each group of hydraulic telescopic rods 22 is connected to the hydraulic pump. A first hydraulic hose 9 is communicated between 10; the hydraulic telescopic rod 22 includes a steel casing 23, the steel casing 23 is a hollow sleeve with a closed top and an open bottom, and the outer circumference of the steel casing 23 is engraved with a second The thread 27 is adapted to the hole 15; the inner thread 27 of the steel casing 23 is connected with a connecting shaft 24, the connecting shaft 24 is a hollow sleeve with a closed top and an open bottom, and a push rod 26 is detachably connected inside the connecting shaft 24. The push rod 26 A set of hydraulic chambers 25 are arranged between the end of the connecting shaft 24 and the inner end face of the connecting shaft 24. The hydraulic chamber 25 is communicated with the hydraulic pump 10 through the first hydraulic hose 9; the second steel plate 21 is provided with a third hole 16 , the inside of the third hole 16 is detachably connected with an air pressure hose 7, one end of the air pressure hose 7 is connected with the air pressure pump 8, and the other end of the air pressure hose 7 is connected with the cylinder surface grabbing member 32; one end of the drive assembly 2 is connected with the air pressure hose 7. The hydraulic hoses are respectively connected with the air pressure pump 8 and the hydraulic pump 10; the other end is connected with the grabbing component 3 through the connecting rod 222; the grabbing component 3 is directly connected with the cylindrical basic structure model 4; Including a second steel plate 21 and a hydraulic telescopic rod 22; the hydraulic telescopic rod 22 specifically includes a steel casing, a connecting shaft 24, and a push rod 26; wherein the steel casing 23 is a hollow sleeve with a closed top and an open bottom, with threads 27 on the outside. It is used to connect with the second steel plate 21, and there is also a thread 27 inside for connecting with the connecting shaft 24; A hydraulic chamber 25 is arranged between, which is connected with the hydraulic pump 10 through a hose; the hydraulic pump 10 injects and extracts insulating liquid into the hydraulic chamber 25 to realize the extension or contraction of the hydraulic telescopic rod 22 .

The transition section grabbing member 31 includes a rubber sealing sheet 33, the rubber sealing sheet 33 is annular, the rubber sealing sheet 33 is internally connected with a rubber water bladder 34, the rubber water bladder 34 is annular, the rubber sealing sheet 33 and the rubber water bladder The upper part of the rubber water bladder 34 is connected with two sets of second hydraulic hoses 901, the two sets of second hydraulic hoses 901 are symmetrically arranged about the center of the rubber water bladder 34, and the two sets of second hydraulic hoses 901 are connected with the hydraulic pump. 10 is connected; during implementation, the grasping assembly 3 includes a transition section grasping member 31 and a cylindrical surface grasping member 32; the transition section grasping member 31 is composed of an annular rubber sealing sheet 33 and an annular rubber water bladder 34. 1 ring-shaped steel top cover 35 and 6 connecting rods 222; the ring-shaped rubber sealing gasket is used to protect the transition section of the cylindrical base model; the ring-shaped rubber water bladder 34 is located on the rubber sealing sheet The upper part of 33 is filled with water by two hydraulic hoses to realize the fitting and separation of the transition section surface of the cylindrical base model, that is, the grasping and detaching of the cylindrical base model; the annular steel top cover 35 Buckled above the rubber water bladder 34, the top of the top cover 35 is connected to the connecting rod 222 through the thread 27 (not marked in the figure); the annular steel top cover 35 has holes on both sides for the passage of the hydraulic hose.

The single cylinder surface grabbing member 32 is composed of a rubber suction cup 37, a steel protective shell 36, a hose and a connecting rod 222; the rubber suction cup 37 is located inside the steel protective shell 36, which is connected to the air pressure pump 8 through a rubber hose; the device works When the operation is completed, the air between the rubber suction cup 37 and the top surface of the cylindrical foundation can be extracted by the air pump 8 to realize the grasping of the barrel surface of the cylindrical basic model; when the work is completed, the rubber suction cup 37 can be injected with air to realize the The steel shell is connected with the hydraulic telescopic rod 22 through the connecting rod 222, and the expansion and contraction of the hydraulic telescopic rod 22 can drive the lifting and lowering of the cylindrical base model.

The upper part of the rubber sealing sheet 33 is overlapped with a top cover 35, and the top cover 35 is made of steel; several groups of connecting rods 222 are fixedly arranged on the upper part of the top cover 35 at equal intervals, and the interiors of the several groups of connecting rods 222 are all hollow structures, and each group is connected to The top of the rod 222 is communicated with the hydraulic telescopic rod 22; the upper part of the top cover 35 is symmetrically provided with a through hole about the center of the top cover 35, and the second hydraulic hose 901 penetrates the through hole.

The cylinder surface grabbing member 32 includes a rubber suction cup 37 . The outside of the rubber suction cup 37 communicates with the air pressure hose 7 , and a protective shell 36 is sleeved outside the rubber suction cup 37 ; the protective shell 36 communicates with the connecting rod 222 .

The top cover 35 is annular, and six groups of connecting rods 222 are provided. The six groups of connecting rods 222 are symmetrically arranged in a hexagonal shape with respect to the center of the top cover 35 , which can enhance the stability of the entire device.

The pneumatic pump 8 , the hydraulic pump 10 and the monitoring data acquisition system 6 are all electrically connected to the computer 111 .

work process:

a) After installing and connecting all parts, first make the barrel surface grab member 32 contact the barrel surface of the barrel base model, turn on the air pressure pump 8, and extract the air in the rubber suction cup 37 until the barrel base model is successfully captured;

b) Insert the transition section grabbing member 31 into the transition section of the cylindrical base model in turn, and then open the monitoring assembly 1 to obtain the initial vertical distance between each laser displacement sensor 14 and the cylindrical base surface;

c) Turn on the hydraulic pump 10, and adjust the telescopic amount of each hydraulic telescopic rod 22 in turn, until the error between the vertical distance between each laser displacement sensor 14 and the cylindrical base surface is less than 1%;

d) Through the hydraulic pump 10, the annular rubber water bladder 34 in the transition section grasping member 31 is filled with water until the rubber water bladder 34 and the transition section curved surface are fitted together to realize the grasping of the transition section of the cylindrical foundation model. After taking, repeat step (c);

e) through the hydraulic pump 10, liquid is injected into all the hydraulic telescopic rods 22 at a constant velocity, so that all the hydraulic telescopic rods 22 are synchronously elongated;

f) Monitor the sinking posture of the cylindrical base model through monitoring component 1, until the cylindrical base model sinks to the design position, pump water to the annular rubber water bladder 34 in the transition section grabbing member 31, remove it The transition section grabs the member 31, and repeats step (c) again to level the model;

g) Injecting air into all the rubber suction cups 37, and at the same time, the hydraulic pump 10 is used to extract the liquid of all the hydraulic telescopic rods 22 at the same speed, so that all the hydraulic telescopic rods 22 are synchronously contracted, and the cylinder surface grabbing member 32 is removed.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The above-mentioned embodiments are only to describe the preferred modes of the present invention, but not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. Variations and improvements should fall within the protection scope determined by the claims of the present invention.

Claims (9)

1. The utility model provides an experimental auxiliary device that sinks of marine wind power cartridge type foundation model, includes cartridge type foundation structure model (4) and computer (111), its characterized in that: the upper part of the cylindrical foundation structure model (4) is detachably connected with a sinking auxiliary mechanism, and the sinking auxiliary mechanism comprises a monitoring assembly (1), a driving assembly (2) and a grabbing assembly (3) which are sequentially arranged from top to bottom;

the monitoring assembly (1) comprises a plurality of groups of laser displacement sensors (14), and each group of laser displacement sensors (14) is electrically connected with a monitoring data acquisition system (6);

the driving assembly (2) comprises a plurality of groups of hydraulic telescopic rods (22), and the hydraulic telescopic rods (22) are connected with a hydraulic pump (10); the driving assembly (2) further comprises a pneumatic pump (8), and the pneumatic pump (8) is communicated with the grabbing assembly (3);

the grabbing component (3) comprises a transition section grabbing component (31) and a barrel surface grabbing component (32).

2. The marine wind power cylinder type foundation model test sinking auxiliary device of claim 1, characterized in that: the monitoring assembly (1) further comprises a first steel plate (12), a plurality of groups of first holes (13) used for mounting the laser displacement sensors (14) are formed in the first steel plate (12), the number of the first holes (13) is the same as that of the laser displacement sensors (14), four groups of supporting legs (11) are arranged below the first steel plate (12), and the four groups of supporting legs (11) correspond to four corners of the first steel plate (12) respectively.

3. The marine wind power cylinder type foundation model test sinking auxiliary device of claim 2, characterized in that: the driving assembly (2) further comprises a second steel plate (21), a plurality of groups of second holes (15) are formed in the second steel plate (21), each group of second holes (15) is in threaded connection with each group of hydraulic telescopic rods (22) (27), and a first hydraulic hose (9) is communicated between each group of hydraulic telescopic rods (22) and the hydraulic pump (10);

the steel plate is characterized in that a third hole (16) is formed in the second steel plate (21), an air pressure hose (7) is detachably connected to the inside of the third hole (16), one end of the air pressure hose (7) is communicated with the air pressure pump (8), and the other end of the air pressure hose (7) is communicated with a cylinder face grabbing component (32).

4. The marine wind power cylinder type foundation model test sinking auxiliary device of claim 3, characterized in that: the hydraulic telescopic rod (22) comprises a steel shell (23), the steel shell (23) is a hollow sleeve with a closed top and an open bottom, and threads (27) matched with the second hole are engraved on the outer side of the steel shell (23) in the circumferential direction; the steel shell (23) internal thread (27) is connected with connecting axle (24), connecting axle (24) are top-closed, bottom open-ended cavity sleeve, connecting axle (24) inside can be dismantled and be connected with push rod (26), push rod (26) are close to the tip of connecting axle (24) with be provided with a set of hydraulic pressure chamber (25) between connecting axle (24) the inside terminal surface, hydraulic pressure chamber (25) through first hydraulic hose (9) with hydraulic pump (10) intercommunication.

5. The marine wind power cylinder type foundation model test sinking assisting device as claimed in claim 4, is characterized in that: the transition section grabbing component (31) comprises a rubber sealing piece (33), the rubber sealing piece (33) is in a circular ring shape, a rubber water bag (34) is connected inside the rubber sealing piece (33), the rubber water bag (34) is in a circular ring shape, and the rubber sealing piece (33) is matched with the rubber water bag (34); two groups of second hydraulic hoses (901) are communicated with the upper part of the rubber water bag (34), the two groups of second hydraulic hoses (901) are symmetrically arranged around the center of the rubber water bag (34), and the two groups of second hydraulic hoses (901) are communicated with the hydraulic pump (10);

a top cover (35) is lapped on the upper part of the rubber sealing sheet (33), and the top cover (35) is made of steel; a plurality of groups of connecting rods (222) are fixedly arranged on the upper part of the top cover (35) at equal intervals in the circumferential direction, the interiors of the plurality of groups of connecting rods (222) are all of a hollow structure, and the top of each group of connecting rods (222) is communicated with the hydraulic telescopic rod (22); through holes are symmetrically formed in the upper portion of the top cover (35) relative to the center of the top cover (35), and the second hydraulic hoses (901) penetrate through the through holes.

6. The marine wind power cylinder type foundation model test sinking assisting device as claimed in claim 5, is characterized in that: the cylinder surface grabbing component (32) comprises a rubber suction cup (37), the outside of the rubber suction cup (37) is communicated with the air pressure hose (7), and a protective shell (36) is sleeved on the outside of the rubber suction cup (37); the protective shell (36) is communicated with the connecting rod (222).

7. The marine wind power cylinder type foundation model test sinking auxiliary device of claim 6, characterized in that: the top cover (35) is in a circular ring shape, six groups of connecting rods (222) are arranged, and the six groups of connecting rods (222) are arranged in a hexagonal symmetrical mode around the center of the top cover (35).

8. The marine wind power cylinder type foundation model test sinking auxiliary device of claim 7, characterized in that: the pneumatic pump (8), the hydraulic pump (10) and the monitoring data acquisition system (6) are electrically connected with the computer (111).

9. A use method of an offshore wind power cylinder type foundation model test sinking auxiliary device is applied to the offshore wind power cylinder type foundation model test sinking auxiliary device of any one of claims 1 to 8, and is characterized in that: the method comprises the following steps:

a) after all the parts are installed and connected, firstly, the cylinder surface grabbing component (32) is in contact with the cylinder surface of the cylinder type basic model, the air pressure pump (8) is started, and air in the rubber suction cup (37) is extracted until the cylinder type basic model is grabbed successfully;

b) sequentially sleeving a transition section grabbing component (31) into the transition section of the cylindrical foundation model, then starting a monitoring assembly (1) and obtaining the initial vertical distance between each laser displacement sensor (14) and the surface of the cylindrical foundation;

c) starting a hydraulic pump (10), and sequentially adjusting the telescopic amount of each hydraulic telescopic rod (20) until the error between the vertical distance between each laser displacement sensor (14) and the surface of the cylindrical foundation is less than 1%;

d) injecting water into a circular rubber water bag (34) in the transition section grabbing component (31) through a hydraulic pump (10) until the rubber water bag (34) is attached to the curved surface of the transition section, grabbing the transition section of the cylindrical basic model, and repeating the step (c);

e) injecting liquid into all the hydraulic telescopic rods (22) at a constant speed through the hydraulic pump (10) so that all the hydraulic telescopic rods (22) extend synchronously;

f) monitoring the sinking posture of the cylindrical foundation model through the monitoring assembly (1), pumping water to an annular rubber water bag (34) in the transition section grabbing component (31) after the cylindrical foundation model sinks to the design position, removing the transition section grabbing component (31), repeating the step (c) again, and leveling the model;

g) and (3) injecting gas into all the rubber suction cups (37), and simultaneously extracting all the hydraulic telescopic rods (22) at a constant speed through the hydraulic pump (10), so that all the hydraulic telescopic rods (22) contract synchronously, and removing the cylinder surface grabbing component (32).

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