An offshore wind power construction platform pile extraction test device and test method

Abstract

The present invention relates to the technical field of high-end equipment for underwater and underground pile extraction tests, and specifically relates to a pile extraction test device and test method for an offshore wind power construction platform, including a test platform, a clamping mechanism, a safety mechanism, and a lifting mechanism. A test pile is arranged inside the test platform. Rotating grooves are evenly formed inside the test platform, and three groups of moving grooves are formed at the top ends of the rotating grooves. The inner walls of one ends of the rotating grooves are all connected to threaded rods through bearings, and first plug plates are slidably connected inside the first slots. By pulling up the test pile upward and fixing it at the same time, the device facilitates the user to disassemble and assemble the test pile without the need for the user to fix it with bolts, which is very simple and convenient. At the same time, by lifting the bearing platform, the top plate, and the clamping member, the influence of the shaking test platform on the test is avoided, thereby improving the accuracy of the test results. At the same time, the safety of the test is ensured through the safety mechanism, thus reducing losses.

Description

Technical Field

[0001] The present invention relates to the technical field of high-end equipment for underwater and underground pile pulling tests, and particularly to a pile pulling test device and test method for an offshore wind power construction platform. Background Technique

[0002] The bottom end of the wind power platform is connected to the seabed through foundation piles. The safety and reliability of the foundation piles ensure the safety of the wind power platform. The pile pulling capacity is one of the important performance indicators of offshore self-elevating platforms and has a significant impact on the operation safety of the platform. During the pile pulling test of the foundation piles, the foundation piles are mainly subject to the friction between the surface and the pile holes in the seabed.

[0003] In the use of some existing pile pulling test equipment for offshore wind power construction platforms, the fixing method of the foundation piles is mostly through bolts. This method makes it very cumbersome for users to disassemble and assemble. Moreover, when the construction platform is conducting tests, due to the frequent shaking of the sea surface, the accuracy of the test results is relatively poor, and the safety is also poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a pile pulling test device and test method for an offshore wind power construction platform, so as to solve the problems raised in the above background technique that in the use of some existing pile pulling test equipment for offshore wind power construction platforms, the fixing method of the foundation piles is mostly through bolts, which makes it very cumbersome for users to disassemble and assemble, and when the construction platform is conducting tests, due to the frequent shaking of the sea surface, the accuracy of the test results is relatively poor, and the safety is also poor. This solution fixes the test pile while pulling it up, thus facilitating users to disassemble and assemble the test pile without the need for users to fix it with bolts, which is very simple and convenient. At the same time, by lifting the bearing platform, the top plate and the clamping parts, the influence of the shaking test platform on the test is avoided, thereby improving the accuracy of the test results. At the same time, the safety of the test is ensured through a safety mechanism, thereby reducing losses.

[0005] To achieve the above object, the present invention provides the following technical solutions: A pile pulling test device and test method for an offshore wind power construction platform, including a test platform, a clamping mechanism, a safety mechanism, and a lifting mechanism. An experimental pile is arranged inside the test platform. Rotating grooves are evenly formed inside the test platform. Three groups of moving grooves are formed at the top ends of the rotating grooves. The inner walls of one ends of the rotating grooves are respectively connected to threaded rods through bearings. The inner walls of the other ends of the rotating grooves are respectively provided with first motors, and the output ends of the first motors are respectively fixedly connected to one ends of the threaded rods. One ends of the threaded rods are respectively connected to threaded sleeves through threads, and the threaded sleeves are respectively slidably connected to the rotating grooves. Push plates are slidably connected inside the moving grooves, and one ends of the push plates are respectively fixedly connected to the threaded sleeves. Four groups of bearing platforms are arranged at the top end of the test platform. Push grooves are formed at the bottom ends of the bearing platforms. The push plates are respectively located inside the push grooves. First slots are formed at both ends of the bearing platforms. First plug plates are slidably connected inside the first slots, and one ends of the first plug plates are respectively fixedly connected to the bearing platforms. Positioning grooves are evenly formed at the top end of the test platform. Positioning plates are slidably connected inside the positioning grooves. The positioning grooves are respectively located on both sides of the push plates.

[0006] Preferably, the output ends of the first motors are electrically connected to an external power supply through an external switch, which is convenient for users to control the operation of the device.

[0007] Preferably, the inner walls of the positioning grooves are inclined surfaces, and the bottom ends of the positioning plates are inclined surfaces, which is convenient for the positioning plates to enter the positioning grooves when the bearing platform moves downward.

[0008] Preferably, the clamping mechanism includes a top plate, a first electric jack, a clamping member, a second slot, a second plug board, a receiving groove, a movable plate, a first sliding groove, a first sliding member, a first spring, a second sliding groove, a second sliding member and a second spring. The tops of the two bearing platforms are both provided with a top plate, and the top plate is located on both sides of the test pile. The tops of the two bearing platforms are both provided with a first electric jack, and the output ends of the first electric jacks are fixedly connected to the bottom end of the top plate. One ends of the top plates close to each other are both provided with a clamping member, and one sides of the clamping members close to each other are both in contact with the test pile. One ends of the top plates are both provided with a second slot, and the second plug boards are slidably connected to the inside of the second slot, and the movements of the second plug boards are respectively fixedly connected to the top plates. One ends of the top plates close to each other are both provided with a receiving groove, and a movable plate is slidably connected to one end of the receiving groove, and one ends of the movable plates are respectively fixedly connected to the clamping members. The inner walls of the ends of the receiving grooves away from each other are both provided with a first sliding groove, and a first sliding member is slidably connected to the inside of the first sliding groove. One ends of the first sliding members are both fixedly connected to a first spring, and one ends of the first springs are respectively fixedly connected to one ends of the movable plates. The inner walls of the bottom ends of the receiving grooves are both provided with a second sliding groove, and a second sliding member is slidably connected to the inside of the second sliding groove. The tops of the second sliding members are both evenly fixedly connected to a second spring, and the top ends of the second springs are both fixedly connected to the movable plate, which is convenient for automatically clamping the test pile.

[0009] Preferably, the control ends of the first electric jacks are both electrically connected to an external power supply through an external switch. The outer surfaces of the clamping members are both inclined surfaces, and the surfaces of the top plates close to each other are both inclined surfaces, which is convenient for clamping the test pile when moving upward.

[0010] Preferably, the safety mechanism includes a second electric jack, a safety plate and a distance sensor. The tops of the two bearing platforms are both provided with a second electric jack. The output ends of the second electric jacks are both fixedly connected to a safety plate, and the safety plates are respectively located at the bottom ends of the joints of the top plates. Distance sensors are both provided at both ends of the safety plate. The control ends of the second electric jacks are both electrically connected to an external power supply through the distance sensors, which improves the safety of use.

[0011] Preferably, the lifting mechanism includes a top ring, brackets, mounting holes, guide wheels, winding members, turbines, second motors, worm gears, hanging plates, connecting members, first steel wires, and second steel wires. A top ring is provided at the top end of the test platform. Brackets are evenly and fixedly connected to the outer surface of the top ring. The bottom ends of the brackets are fixedly connected to the test platform. Mounting holes are evenly formed at the top ends of the top ring and the brackets. Guide wheels are connected to the inside of the mounting holes through bearings. Winding members are provided at one end of each bracket, and the bottom ends of the winding members are fixedly connected to the test platform. One end of each winding member is fixedly connected to a turbine. Second motors are provided at one end of each bracket. The output ends of the second motors are fixedly connected to worm gears, and the worm gears are respectively meshed with the turbines. Hanging plates are provided at the top ends of the bearing platforms. Connecting members are provided at both ends of the bearing platforms. The top ends of the connecting members are fixedly connected to first steel wires, and the top ends of the first steel wires are respectively fixedly connected to the hanging plates. Second steel wires are fixedly connected to both ends of the hanging plates, and one end of each second steel wire respectively passes through the mounting hole and is fixedly connected to the winding member, reducing shaking and test errors.

[0012] Preferably, the output ends of the second motors are electrically connected to an external power supply through external switches. The middle parts of the second steel wires are respectively located in the middle parts of the guide wheels, facilitating the user to control the operation of the device.

[0013] The present invention includes a test method for a pile pulling test device of an offshore wind power construction platform:

[0014] Step 1: Assemble the bearing platform. The user controls the first motors to work simultaneously. Through the threaded rods and the first motors, the push plates drive the bearing platforms to move simultaneously towards the test pile. At the same time, the bearing platforms drive the positioning plates to slide inside the positioning grooves. During the process of the four bearing platforms approaching each other, the first insertion plates can be inserted into the first insertion slots, thus completing the assembly of the bearing platform.

[0015] Step 2: Assemble the top plate. The moving bearing platforms drive the top plate to move through the first electric jacks. The approaching top plates enable the second insertion plates to be inserted into the second insertion slots. The top plate drives the clamping members to approach the test pile. When the clamping members are in contact with the test pile, the movable plates slide inside the receiving grooves. Under the action of the first springs, one side of the clamping members closely contacts and abuts against the test pile.

[0016] Step 3: Lift the bearing platform. The user connects the first steel wires to the bearing platform through the connecting members. The second motors, worm gears, and turbines drive the winding members to rotate. The second steel wires are wound by the winding members. Through the second steel wires, hanging plates, first steel wires, and second steel wires, the bearing platform can be lifted, and at this time, the entire bearing platform can be hoisted.

[0017] Step 4: Test and clamp. The user controls the operation of the first electric jack and the distance sensor. The top plate is lifted upward integrally by the first electric jack. The inclined surface of the top plate abuts against the inclined surface of the clamping member, so that the clamping member clamps the test pile. The test pile is pulled upward by the upward-moving top plate and the clamping member. At the same time, the distance sensor ensures that a certain distance is always maintained between the connection of the safety plate and the top plate.

[0018] Step 5: Reset. After the test is completed, the user controls the downward movement of the top plate and the clamping member through the first electric jack. When the top plate is reset, the safety plate is reset by the distance sensor and the second electric jack. The user controls the output end of the second motor to reverse, so that the bearing platform drops. The push plate can accurately enter the inside of the push groove through the positioning plate and the positioning groove. The bearing platform is separated from the first steel wire rope through the connecting member. The bearing platform is reset by the first motor. The clamping member is reset by the first electric jack and the top plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] When the user uses this device, the user controls the first motor to work simultaneously. Through the threaded rod and the first motor, the push plate moves simultaneously in the direction close to the test pile. The push plate drives the bearing platform to move. At this time, the bearing platform moves to one side of the test pile simultaneously. At the same time, the positioning plate slides inside the positioning groove. During the process of the four bearing platforms approaching each other, the first plug board can be inserted into the inside of the first slot, which is convenient for lifting the bearing platforms simultaneously in the later stage. The moving bearing platform drives the top plate to move through the first electric jack. The approaching top plates can make the second plug board inserted into the inside of the second slot, which is convenient for the first electric jack to lift the top plates simultaneously in the later stage. The approaching top plates drive the clamping piece to approach the test pile. When the clamping piece fits with the test pile, the clamping piece stops moving. At this time, the movable plate slides inside the receiving groove, and at the same time, the movable plate compresses the first spring. Under the action of the first spring, one side of the clamping piece closely fits and abuts against the test pile. When the movable plate slides inside the receiving groove, it drives the second sliding piece to slide inside the second chute through the second spring. When the four bearing platforms fit together, at this time, the safety plate is at the bottom end of the connection of the top plate. Then the user connects the first steel wire rope with the bearing platform through the connecting piece. The user controls the second motor to work simultaneously. The output end of the second motor drives the winding piece to rotate through the worm and the turbine. The rotating winding piece winds the second steel wire rope. The guide wheel facilitates the movement of the second steel wire rope. While winding, one end of the second steel wire rope drives the hanging plate to move upward. The hanging plate drives the first steel wire rope and the bearing platform to move upward. The upward moving bearing platform drives the top plate to move upward through the first electric jack. Since one side of the clamping piece abuts against the test pile, the movable plate moves inside the receiving groove. At the same time, the second spring is compressed through the movable plate. At the same time, the movable plate drives the first sliding piece to slide inside the first chute through the first spring, and then the whole bearing platform can be lifted. Due to the self-locking performance of the turbine and the worm, it can prevent the bearing platform from falling after the power is turned off. Then the user can carry out the pile pulling test. The user controls the first electric jack and the distance sensor to work. The first electric jack jacks up the whole top plate upward. Through the inclined plane of the top plate abutting against the inclined plane of the clamping piece, the clamping piece clamps the test pile, which is very convenient. The test pile is pulled upward by the upward moving top plate and the clamping piece. At the same time, the second electric jack is controlled to work through the distance sensor. The output end of the second electric jack drives the safety plate to move upward. The distance sensor makes the safety plate always maintain a certain distance from the connection of the top plate to protect the upward moving top plate and improve the safety of use. After the bearing platform, the top plate and the clamping piece are all at the top of the test platform, the bearing platform does not contact the test platform. Therefore, the shaking test platform cannot drive the bearing platform, the top plate and the clamping piece to shake, thus improving the accuracy of the test results. After the test is over, the user controls the first electric jack to lower the top plate and the clamping piece. When the top plate returns to its original position, the safety plate returns to its original position through the distance sensor and the second electric jack. The user controls the second motor to work,The output end of the second motor drives the worm, the turbine and the winding member to rotate in the reverse direction. At this time, the bearing platform can fall. Through the inclined surfaces of the positioning plate at the bottom end of the bearing platform and the positioning groove on the surface of the test platform, it is convenient for the positioning plate to enter the inside of the positioning groove. At the same time, the push plate can accurately enter the inside of the push groove. Then the user separates the bearing platform from the first steel wire rope through the connecting member. At this time, the user controls the output end of the first motor to rotate in the reverse direction, and the bearing platform is reset through the threaded rod, the threaded sleeve and the push plate. The first electric jack and the top plate drive the clamping member to reset. This device facilitates the disassembly and assembly of the test pile for the user by pulling up the test pile and fixing it at the same time, without the user having to fix it with bolts, which is very simple and convenient. At the same time, by lifting the bearing platform, the top plate and the clamping member, the influence of the shaking test platform on the test is avoided, thereby improving the accuracy of the test results. At the same time, the safety mechanism ensures the safety of the test, thus reducing losses. Brief Description of the Drawings

[0021] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 is a sectional three-dimensional schematic diagram of the present invention;

[0023] Figure 3 is a sectional three-dimensional schematic diagram of the test platform, the rotating groove and the positioning groove in the present invention;

[0024] Figure 4 is a sectional three-dimensional schematic diagram of the bearing platform and the first slot in the present invention;

[0025] Figure 5 is a sectional three-dimensional schematic diagram of the top plate, the receiving groove and the second sliding groove in the present invention;

[0026] Figure 6 is a sectional three-dimensional schematic diagram of the top plate and the second slot in the present invention;

[0027] Figure 7 is a three-dimensional schematic diagram of the lifting mechanism in the present invention;

[0028] Figure 8 is an exploded three-dimensional schematic diagram of the clamping mechanism in the present invention.

[0029] In the figure: 1. Test platform; 2. Test pile; 3. Rotating groove; 4. Moving groove; 5. Threaded rod; 6. First motor; 7. Threaded sleeve; 8. Pushing plate; 9. Bearing platform; 10. Pushing groove; 11. First slot; 12. First plug board; 13. Positioning groove; 14. Positioning plate; 15. Top plate; 16. First electric jack; 17. Clamping member; 18. Second slot; 19. Second plug board; 20. Receiving groove; 21. Movable plate; 22. First sliding groove; 23. First sliding member; 24. First spring; 25. Second sliding groove; 26. Second sliding member; 27. Second spring; 28. Second electric jack; 29. Safety plate; 30. Distance sensor; 31. Top ring; 32. Bracket; 33. Mounting hole; 34. Guide wheel; 35. Reeling member; 36. Turbine; 37. Second motor; 38. Worm; 39. Hanging plate; 40. Connecting member; 41. First steel wire rope; 42. Second steel wire rope. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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, rather than all 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.

[0031] Please refer to Figures 1 - 8 , an embodiment provided by the present invention:

[0032] A pile pulling test device and test method for an offshore wind power construction platform, including a test platform 1, a clamping mechanism, a safety mechanism, and a lifting mechanism. A test pile 2 is arranged inside the test platform 1. Rotating grooves 3 are evenly opened inside the test platform 1. Three groups of moving grooves 4 are opened at the top ends of the rotating grooves 3. The inner walls at one end of the rotating grooves 3 are all connected to threaded rods 5 through bearings. The inner walls at the other end of the rotating grooves 3 are all provided with first motors 6, and the output ends of the first motors 6 are respectively fixedly connected to one ends of the threaded rods 5. One ends of the threaded rods 5 are all threadedly connected to threaded sleeves 7, and the threaded sleeves 7 are respectively slidably connected to the rotating grooves 3. Pushing plates 8 are slidably connected inside the moving grooves 4, and one ends of the pushing plates 8 are respectively fixedly connected to the threaded sleeves 7. Four groups of bearing platforms 9 are arranged at the top end of the test platform 1. Pushing grooves 10 are opened at the bottom ends of the bearing platforms 9. The pushing plates 8 are respectively located inside the pushing grooves 10. First slots 11 are opened at both ends of the bearing platforms 9. First plug boards 12 are slidably connected inside the first slots 11, and one ends of the first plug boards 12 are respectively fixedly connected to the bearing platforms 9. Positioning grooves 13 are evenly opened at the top end of the test platform 1. Positioning plates 14 are slidably connected inside the positioning grooves 13, and the positioning grooves 13 are respectively located on both sides of the pushing plates 8;

[0033] Please refer toFigure 3 , Figure 5 , Figure 6 and Figure 8, in this embodiment, the clamping mechanism includes a top plate 15, a first electric jack 16, a clamping member 17, a second slot 18, a second plug board 19, a receiving groove 20, a movable plate 21, a first sliding groove 22, a first sliding member 23, a first spring 24, a second sliding groove 25, a second sliding member 26 and a second spring 27. Top plates 15 are provided at the tops of two groups of bearing platforms 9, and the top plates 15 are located on both sides of the test pile 2. First electric jacks 16 are provided at the tops of two groups of bearing platforms 9, and the output ends of the first electric jacks 16 are fixedly connected to the bottom ends of the top plates 15. Clamping members 17 are provided at the ends of the top plates 15 close to each other, and the sides of the clamping members 17 close to each other are in contact with the test pile 2. Second slots 18 are formed at one end of each top plate 15, second plug boards 19 are slidably connected inside the second slots 18, and the movements of the second plug boards 19 are respectively fixedly connected to the top plates 15. Receiving grooves 20 are formed at the ends of the top plates 15 close to each other, movable plates 21 are slidably connected to one end of each receiving groove 20, and one end of each movable plate 21 is respectively fixedly connected to the clamping member 17. First sliding grooves 22 are formed in the inner walls of the ends of the receiving grooves 20 away from each other, first sliding members 23 are slidably connected inside the first sliding grooves 22, one end of each first sliding member 23 is fixedly connected to a first spring 24, and one end of each first spring 24 is respectively fixedly connected to one end of the movable plate 21. Second sliding grooves 25 are formed in the inner walls of the bottoms of the receiving grooves 20, second sliding members 26 are slidably connected inside the second sliding grooves 25, the tops of the second sliding members 26 are evenly fixedly connected to second springs 27, and the tops of the second springs 27 are fixedly connected to the movable plates 21. The moving bearing platform 9 drives the top plate 15 to move through the first electric jack 16. The top plates 15 close to each other can make the second plug boards 19 insert into the second slots 18 at the same time, which is convenient for the first electric jack 16 to lift the top plates 15 at the same time later. The top plates 15 close to each other drive the clamping members 17 to approach the test pile 2. When the clamping members 17 are in contact with the test pile 2, the clamping members 17 stop moving. At this time, the movable plate 21 slides inside the receiving groove 20, and at the same time, the movable plate 21 compresses the first spring 24. Under the action of the self-return force of the first spring 24, one side of the clamping member 17 is closely in contact with and abuts against the test pile 2. When the movable plate 21 slides inside the receiving groove 20, it drives the second sliding member 26 to slide inside the second sliding groove 25 through the second spring 27. When the four groups of bearing platforms 9 are in contact with each other, at this time, the safety plate 29 is at the bottom end of the connection of the top plates 15. When the hanging plate 39 drives the first steel wire rope 41 and the bearing platform 9 to move upward, the upward moving bearing platform 9 drives the top plate 15 to move upward through the first electric jack 16. Since one side of the clamping member 17 abuts against the test pile 2, the movable plate 21 moves inside the receiving groove 20, compresses the second spring 27 through the movable plate 21, and at the same time, the movable plate 21 drives the first sliding member 23 to slide inside the first sliding groove 22 through the first spring 24, and the inclined surface of the top plate 15 gradually fits with the inclined surface of the clamping member 17.At this time, the entire bearing platform 9 can be lifted. Due to the self-locking performance of the turbine 36 and the worm 38, it can prevent the bearing platform 9 from falling after the power is turned off. Then, the user can conduct a pile-pulling test. The user controls the first electric jack 16 and the distance sensor 30 to work. The first electric jack 16 jacks up the entire top plate 15 upward. At this time, the inclined surface of the top plate 15 abuts against the inclined surface of the clamping member 17, so that the clamping member 17 moves upward, and at the same time, the clamping members 17 approach each other and clamp the test pile 2, which facilitates the clamping work of the device and is very convenient;

[0034] Please refer to Figure 5 、 Figure 6 and Figure 8 In this embodiment, the safety mechanism includes a second electric jack 28, a safety plate 29 and a distance sensor 30. Second electric jacks 28 are provided at the tops of two groups of bearing platforms 9. The output ends of the second electric jacks 28 are fixedly connected with safety plates 29, and the safety plates 29 are respectively located at the bottoms of the connection parts of the top plates 15. Distance sensors 30 are provided at both ends of the safety plates 29. The control ends of the second electric jacks 28 are electrically connected to an external power supply through the distance sensors 30. The test pile 2 is pulled upward by the upward-moving top plate 15 and the clamping member 17. At the same time, the user controls the second electric jack 28 to work through the distance sensor 30. The output end of the second electric jack 28 drives the safety plate 29 to move upward. The distance sensor 30 keeps a certain distance between the safety plate 29 and the connection part of the top plate 15 all the time, protecting the upward-moving top plate 15 and improving the safety of use;

[0035] Please refer to Figure 1 、 Figure 2 and Figure 7, in this embodiment, the lifting mechanism includes a top ring 31, a bracket 32, a mounting hole 33, a guide wheel 34, a winding member 35, a turbine 36, a second motor 37, a worm 38, a hanging plate 39, a connecting member 40, a first steel wire rope 41 and a second steel wire rope 42. A top ring 31 is provided at the top end of the test platform 1. The outer surface of the top ring 31 is uniformly and fixedly connected with brackets 32. The bottom ends of the brackets 32 are all fixedly connected with the test platform 1. Mounting holes 33 are uniformly formed at the top ends of the top ring 31 and the brackets 32. Guide wheels 34 are connected inside the mounting holes 33 through bearings. Winding members 35 are provided at one ends of the brackets 32, and the bottom ends of the winding members 35 are all fixedly connected with the test platform 1. One ends of the winding members 35 are all fixedly connected with turbines 36. Second motors 37 are provided at one ends of the brackets 32. The output ends of the second motors 37 are all fixedly connected with worms 38, and the worms 38 are respectively meshed with the turbines 36. Hanging plates 39 are provided at the top ends of the bearing platforms 9. Connecting members 40 are provided at both ends of the bearing platforms 9. The top ends of the connecting members 40 are all fixedly connected with first steel wire ropes 41, and the top ends of the first steel wire ropes 41 are respectively fixedly connected with the hanging plates 39. Second steel wire ropes 42 are fixedly connected to both ends of the hanging plates 39, and one ends of the second steel wire ropes 42 respectively pass through the mounting holes 33 and are fixedly connected with the winding members 35. The user connects the first steel wire rope 41 with the bearing platform 9 through the connecting member 40. When the user controls the second motors 37 to work simultaneously, the output ends of the second motors 37 drive the worms 38 to rotate. The rotating worms 38 drive the turbines 36 to rotate. The rotating turbines 36 drive the winding members 35 to rotate. One ends of the second steel wire ropes 42 are wound by the rotating winding members 35. The guide wheels 34 facilitate the movement of the second steel wire ropes 42. While winding, one ends of the second steel wire ropes 42 drive the hanging plates 39 to move upward. The hanging plates 39 drive the first steel wire ropes 41 and the bearing platforms 9 to move upward. During the test, the bearing platforms 9, the top plates 15 and the clamping members 17 are all at the top end of the test platform 1. The bearing platforms 9 do not contact the test platform 1. The shaking test platform 1 cannot drive the bearing platforms 9, the top plates 15 and the clamping members 17 to shake, reducing the test error, thereby improving the accuracy of the test results;

[0036] It should be noted that the output ends of the second motors 37 are all electrically connected to the external power supply through external switches. The middle parts of the second steel wire ropes 42 are respectively located in the middle parts of the guide wheels 34, facilitating the user to control the operation of the device. The control ends of the first electric jacks 16 are all electrically connected to the external power supply through external switches. The outer surfaces of the clamping members 17 are all bevel-shaped. The surfaces of the top plates 15 close to each other are all bevel-shaped, facilitating clamping the test pile 2 when moving upward. The inner walls of the positioning grooves 13 are all bevel-shaped. The bottom ends of the positioning plates 14 are all bevel-shaped, facilitating the positioning plates 14 to enter the inside of the positioning grooves 13 when the bearing platforms 9 move downward. The output ends of the first motors 6 are all electrically connected to the external power supply through external switches, facilitating the user to control the operation of the device;

[0037] Test method of this device:

[0038] Step 1: Assemble the bearing platform 9. The user controls the first motors 6 to work simultaneously. Through the threaded rods 5 and the first motors 6, the push plate 8 drives the bearing platform 9 to move towards the test pile 2 at the same time. Meanwhile, the bearing platform 9 drives the positioning plate 14 to slide inside the positioning groove 13. During the process of the four bearing platforms 9 approaching each other, the first plug board 12 can be inserted into the first slot 11, so that the bearing platform 9 is assembled completely;

[0039] Step 2: Assemble the top plate 15. The moving bearing platform 9 drives the top plate 15 to move through the first electric jack 16. The approaching top plates 15 can make the second plug board 19 inserted into the second slot 18. The top plate 15 drives the clamping member 17 to approach the test pile 2. When the clamping member 17 is in contact with the test pile 2, the movable plate 21 slides inside the receiving groove 20. Under the action of the first spring 24, one side of the clamping member 17 is closely in contact with and abuts against the test pile 2;

[0040] Step 3: Lift the bearing platform 9. The user connects the first steel wire rope 41 with the bearing platform 9 through the connecting member 40. The second motor 37, the worm 38 and the turbine 36 drive the winding member 35 to rotate. The second steel wire rope 42 is wound by the winding member 35. Through the second steel wire rope 42, the hanging plate 39, the first steel wire rope 41 and the second steel wire rope 42, the bearing platform 9 can be lifted, and at this time, the bearing platform 9 can be lifted as a whole;

[0041] Step 4: Test and clamp. The user controls the first electric jack 16 and the distance sensor 30 to work. The first electric jack 16 jacks up the top plate 15 as a whole. Through the inclined surface of the top plate 15 abutting against the inclined surface of the clamping member 17, the clamping member 17 clamps the test pile 2. The test pile 2 is pulled up by the upward moving top plate 15 and the clamping member 17. At the same time, through the distance sensor 30, a certain distance is always maintained between the connection part of the safety plate 29 and the top plate 15;

[0042] Step 5: Reset. After the test is completed, the user controls the top plate 15 and the clamping member 17 to move down through the first electric jack 16. When the top plate 15 is reset, the safety plate 29 is reset through the distance sensor 30 and the second electric jack 28. The user controls the output end of the second motor 37 to reverse, so that the bearing platform 9 drops. Through the positioning plate 14 and the positioning groove 13, the push plate 8 can accurately enter the inside of the push groove 10. The bearing platform 9 is separated from the first steel wire rope 41 through the connecting member 40. The bearing platform 9 is reset through the first motor 6. The clamping member 17 is reset through the first electric jack 16 and the top plate 15.

[0043] Working principle: When the user uses this device, the user controls the first motor 6 to work simultaneously. The output end of the first motor 6 drives the threaded rod 5 to rotate. Through the rotating threaded rod 5, the threaded sleeve 7 moves inside the rotating groove 3. The moving threaded sleeve 7 drives the push plate 8 to move inside the moving groove 4. By the moving push plate 8 abutting against the inner wall of the push groove 10, the push plate 8 drives the bearing platform 9 to move on the surface of the test platform 1 and at the same time move in the direction close to the test pile 2. The bearing platform 9 drives the positioning plate 14 to slide inside the positioning groove 13. During the process of the four bearing platforms 9 approaching each other, the first plug board 12 can be inserted into the first slot 11 at the same time, which is convenient for lifting the bearing platform 9 at the later stage. The moving bearing platform 9 drives the top plate 15 to move through the first electric jack 16. The approaching top plates 15 can make the second plug board 19 inserted into the second slot 18 at the same time, which is convenient for the first electric jack 16 to lift the top plate 15 at the later stage. The approaching top plates 15 drive the clamping member 17 to approach the test pile 2. When the clamping member 17 fits with the test pile 2, the clamping member 17 stops moving. At this time, the movable plate 21 slides inside the receiving groove 20, and at the same time the movable plate 21 compresses the first spring 24. Under the action of the self-return force of the first spring 24, one side of the clamping member 17 closely abuts against the test pile 2. When the movable plate 21 slides inside the receiving groove 20, it drives the second sliding member 26 to slide inside the second sliding groove 25 through the second spring 27. When the four bearing platforms 9 are fitted together, at this time the safety plate 29 is at the bottom end of the connection of the top plate 15. Then the user connects the first steel wire rope 41 with the bearing platform 9 through the connecting member 40. The user controls the second motor 37 to work simultaneously. The output end of the second motor 37 drives the worm 38 to rotate. The rotating worm 38 drives the turbine 36 to rotate. The rotating turbine 36 drives the winding member 35 to rotate. One end of the second steel wire rope 42 is wound through the rotating winding member 35. The guide wheel 34 facilitates the movement of the second steel wire rope 42. During the winding process, one end of the second steel wire rope 42 drives the hanging plate 39 to move upward. The hanging plate 39 drives the first steel wire rope 41 and the bearing platform 9 to move upward. The upward moving bearing platform 9 drives the top plate 15 to move upward through the first electric jack 16. Since one side of the clamping member 17 abuts against the test pile 2, the movable plate 21 moves inside the receiving groove 20, compresses the second spring 27 through the movable plate 21, and at the same time the movable plate 21 drives the first sliding member 23 to slide inside the first sliding groove 22 through the first spring 24. The inclined surface of the top plate 15 gradually fits with the inclined surface of the clamping member 17. At this time, the whole bearing platform 9 can be lifted. Due to the self-locking performance of the turbine 36 and the worm 38, it can prevent the bearing platform 9 from falling after the power is turned off. Then the user can carry out the pile pulling test. The user controls the first electric jack 16 and the distance sensor 30 to work. The first electric jack 16 jacks up the whole top plate 15 upward. At this time, the inclined surface of the top plate 15 abuts against the inclined surface of the clamping member 17, so that the clamping member 17 moves upward.Meanwhile, the clamping members 17 are moved closer to each other to clamp the test pile 2, facilitating the clamping operation of the device, which is very convenient. The test pile 2 is pulled upward by the upward-moving top plate 15 and the clamping members 17. At the same time, the user controls the operation of the second electric jack 28 through the distance sensor 30. The output end of the second electric jack 28 drives the safety plate 29 to move upward. Through the distance sensor 30, a certain distance is always maintained between the connection of the safety plate 29 and the top plate 15 to protect the upward-moving top plate 15 and improve the safety of use. During the test, the bearing platform 9, the top plate 15, and the clamping members 17 are all at the top of the test platform 1, and the bearing platform 9 does not contact the test platform 1. Thus, the shaking test platform 1 cannot drive the bearing platform 9, the top plate 15, and the clamping members 17 to shake, thereby improving the accuracy of the test results. After the test, the user controls the downward movement of the top plate 15 and the clamping members 17 through the first electric jack 16. At the same time, the distance sensor 30 controls the second electric jack 28 to move the safety plate 29 downward. When the top plate 15 is reset, the safety plate 29 is reset through the distance sensor 30 and the second electric jack 28. The user controls the operation of the second motor 37. The output end of the second motor 37 drives the worm 38, the turbine 36, and the winding member 35 to rotate in the reverse direction. At this time, the bearing platform 9 can be lowered. Through the inclined surfaces of the positioning plate 14 at the bottom of the bearing platform 9 and the positioning groove 13 on the surface of the test platform 1, it is convenient for the positioning plate 14 to enter the inside of the positioning groove 13, and at the same time, the push plate 8 can accurately enter the inside of the push groove 10. Then the user separates the bearing platform 9 from the first steel wire rope 41 through the connecting member 40. At this time, the user controls the output end of the first motor 6 to rotate in the reverse direction. Through the threaded rod 5, the threaded sleeve 7, and the push plate 8, the bearing platform 9 is reset. The clamping members 17 are reset by the first electric jack 16 and the top plate 15. By pulling up the test pile 2 and fixing it at the same time, the device facilitates the disassembly and assembly of the test pile 2 for the user without the need for the user to fix it with bolts, which is very simple and convenient. At the same time, by lifting the bearing platform 9, the top plate 15, and the clamping members 17, the influence of the shaking test platform 1 on the test is avoided, thereby improving the accuracy of the test results. At the same time, the safety of the test is ensured through the safety mechanism, thus reducing losses.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An extraction pile test device for an offshore wind power construction platform, characterized in that, it includes a test platform (1), a clamping mechanism, a safety mechanism and a hoisting mechanism. A test pile (2) is arranged inside the test platform (1). Rotating grooves (3) are evenly formed inside the test platform (1). Three groups of moving grooves (4) are formed at the top ends of the rotating grooves (3). The inner walls at one ends of the rotating grooves (3) are all connected to threaded rods (5) through bearings. The inner walls at the other ends of the rotating grooves (3) are all provided with first motors (6), and the output ends of the first motors (6) are respectively fixedly connected to one ends of the threaded rods (5). One ends of the threaded rods (5) are all connected to threaded sleeves (7) through threads, and the threaded sleeves (7) are respectively slidably connected to the rotating grooves (3). Push plates (8) are slidably connected inside the moving grooves (4), and one ends of the push plates (8) are respectively fixedly connected to the threaded sleeves (7). Four groups of bearing platforms (9) are arranged at the top end of the test platform (1). Push grooves (10) are formed at the bottom ends of the bearing platforms (9). The push plates (8) are respectively located inside the push grooves (10). First insertion slots (11) are formed at both ends of the bearing platforms (9). First insertion plates (12) are slidably connected inside the first insertion slots (11), and one ends of the first insertion plates (12) are respectively fixedly connected to the bearing platforms (9). Positioning grooves (13) are evenly formed at the top end of the test platform (1). Positioning plates (14) are slidably connected inside the positioning grooves (13), and the positioning grooves (13) are respectively located on both sides of the push plates (8); The hoisting mechanism includes a top ring (31), a bracket (32), a mounting hole (33), a guide wheel (34), a winding member (35), a turbine (36), a second motor (37), a worm (38), a hanging plate (39), a connecting member (40), a first steel wire rope (41) and a second steel wire rope (42). A top ring (31) is provided at the top end of the test platform (1). The outer surface of the top ring (31) is uniformly and fixedly connected with brackets (32). The bottom ends of the brackets (32) are all fixedly connected with the test platform (1). Mounting holes (33) are uniformly formed at the top ends of the top ring (31) and the brackets (32). Guide wheels (34) are connected inside the mounting holes (33) through bearings. Winding members (35) are provided at one ends of the brackets (32). One ends of the winding members (35) are fixedly connected with turbines (36). Second motors (37) are provided at one ends of the brackets (32). The output ends of the second motors (37) are fixedly connected with worms (38). Hanging plates (39) are provided at the top ends of the bearing platforms (9). Connecting members (40) are provided at both ends of the bearing platforms (9). First steel wire ropes (41) are fixedly connected to the top ends of the connecting members (40). Second steel wire ropes (42) are fixedly connected to both ends of the hanging plates (39). The bottom ends of the winding members (35) are all fixedly connected with the test platform (1). The worms (38) are respectively meshed with the turbines (36). The top ends of the first steel wire ropes (41) are respectively fixedly connected with the hanging plates (39). One ends of the second steel wire ropes (42) respectively pass through the mounting holes (33) and are fixedly connected with the winding members (35).

2. The pile extraction test device for an offshore wind power construction platform according to claim 1, characterized in that: The output ends of the first motors (6) are electrically connected to an external power supply through external switches.

3. The pile extraction test device for an offshore wind power construction platform according to claim 2, characterized in that: The inner walls of the positioning grooves (13) are all inclined surfaces, and the bottom ends of the positioning plates (14) are all inclined surfaces.

4. The pile extraction test device for an offshore wind power construction platform according to claim 3, characterized in that: The clamping mechanism includes a top plate (15), a first electric jack (16), a clamping member (17), a second slot (18), a second plug board (19), a receiving groove (20), a movable plate (21), a first sliding groove (22), a first sliding member (23), a first spring (24), a second sliding groove (25), a second sliding member (26) and a second spring (27). Top plates (15) are provided at the tops of the two groups of bearing platforms (9), and the top plates (15) are located on both sides of the test pile (2). First electric jacks (16) are provided at the tops of the two groups of bearing platforms (9), and the output ends of the first electric jacks (16) are fixedly connected to the bottom ends of the top plates (15). Clamping members (17) are provided at the ends of the top plates (15) close to each other, and the sides of the clamping members (17) close to each other are in contact with the test pile (2). Second slots (18) are formed at one ends of the top plates (15), second plug boards (19) are slidably connected inside the second slots (18), and one ends of the second plug boards (19) are fixedly connected to the top plates (15) respectively. Receiving grooves (20) are formed at the ends of the top plates (15) close to each other, movable plates (21) are slidably connected to one ends of the receiving grooves (20), and one ends of the movable plates (21) are fixedly connected to the clamping members (17) respectively. First sliding grooves (22) are formed on the inner walls of the receiving grooves (20) at the ends away from each other, first sliding members (23) are slidably connected inside the first sliding grooves (22), one ends of the first sliding members (23) are fixedly connected to first springs (24), and one ends of the first springs (24) are fixedly connected to one ends of the movable plates (21) respectively. Second sliding grooves (25) are formed on the inner walls of the bottoms of the receiving grooves (20), second sliding members (26) are slidably connected inside the second sliding grooves (25), second springs (27) are uniformly fixedly connected to the tops of the second sliding members (26), and the tops of the second springs (27) are fixedly connected to the movable plates (21).

5. The pile pulling test device for an offshore wind power construction platform according to claim 4, characterized in that: The control ends of the first electric jacks (16) are electrically connected to an external power supply through an external switch. The outer surfaces of the clamping members (17) are all inclined surfaces, and the surfaces of the top plates (15) on the sides close to each other are all inclined surfaces.

6. The pile pulling test device for an offshore wind power construction platform according to claim 5, characterized in that: The safety mechanism includes a second electric jack (28), a safety plate (29) and a distance sensor (30). Second electric jacks (28) are provided at the tops of the two groups of bearing platforms (9), the output ends of the second electric jacks (28) are fixedly connected to the safety plates (29), and the safety plates (29) are respectively located at the bottoms of the joints of the top plates (15). Distance sensors (30) are provided at both ends of the safety plates (29), and the control ends of the second electric jacks (28) are electrically connected to an external power supply through the distance sensors (30).

7. An extraction pile test device for an offshore wind power construction platform according to claim 1, characterized in that: The output ends of the second motors (37) are electrically connected to an external power supply through external switches, and the middle parts of the second steel ropes (42) are respectively located in the middle parts of the guide wheels (34).

8. A test method for an extraction pile test device for an offshore wind power construction platform according to claim 6, characterized in that: Step 1: Assemble the bearing platform (9). The user controls the first motors (6) to work simultaneously. Through the threaded rods (5) and the first motors (6), the push plates (8) drive the bearing platform (9) to move simultaneously towards the direction close to the test pile (2). At the same time, the bearing platform (9) drives the positioning plate (14) to slide inside the positioning groove (13). During the process of the four groups of bearing platforms (9) approaching each other, the first plug board (12) can be inserted into the first slot (11), so that the assembly of the bearing platform (9) is completed; Step 2: Assemble the top plate (15). The moving bearing platform (9) drives the top plate (15) to move through the first electric jack (16). The approaching top plates (15) can make the second plug board (19) inserted into the second slot (18). The top plate (15) drives the clamping member (17) to approach the test pile (2). When the clamping member (17) is in contact with the test pile (2), the movable plate (21) slides inside the receiving groove (20). Under the action of the first spring (24), one side of the clamping member (17) is closely in contact with and abuts against the test pile (2); Step 3: Lift the bearing platform (9). The user connects the first steel rope (41) to the bearing platform (9) through the connecting member (40). The second motor (37), the worm (38) and the turbine (36) drive the winding member (35) to rotate. The second steel rope (42) is wound through the winding member (35). Through the second steel rope (42), the hanging plate (39), the first steel rope (41) and the second steel rope (42), the bearing platform (9) can be lifted upwards, and at this time, the whole bearing platform (9) can be lifted; Step 4: Test and clamp. The user controls the first electric jack (16) and the distance sensor (30) to work. The first electric jack (16) jacks up the top plate (15) as a whole. Through the inclined surface of the top plate (15) abutting against the inclined surface of the clamping member (17), the clamping member (17) clamps the test pile (2). The test pile (2) is pulled upwards by the upward moving top plate (15) and the clamping member (17). At the same time, through the distance sensor (30), the connection between the safety plate (29) and the top plate (15) always maintains a certain distance; Step 5: Reset. After the test, the user controls the lowering of the top plate (15) and the clamping member (17) through the first electric jack (16). After the top plate (15) is reset, the safety plate (29) is reset by the distance sensor (30) and the second electric jack (28). The user controls the output end of the second motor (37) to reverse, causing the carrier table (9) to drop. Through the positioning plate (14) and the positioning groove (13), the push plate (8) can accurately enter the inside of the push groove (10). The carrier table (9) is separated from the first steel wire rope (41) through the connecting member (40). The carrier table (9) is reset by the first motor (6). The clamping member (17) is reset by the first electric jack (16) and the top plate (15).

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