Absolute settlement monitoring device for offshore wind power foundation

Abstract

The utility model relates to an absolute settlement monitoring device for an offshore wind power foundation. The device comprises a monitoring table, two supporting rods are symmetrically arranged on the two sides of the monitoring table, a settlement measuring mechanism is arranged at the lower end of the monitoring table, and the settlement measuring mechanism comprises a fixed part fixed to the monitoring table and a sliding part arranged on the fixed part in a sliding mode. The fixed part or the sliding part is provided with settlement scales extending along the sliding path of the fixed part or the sliding part, a horizontal calibration mechanism is arranged on the upper end face of the monitoring table and comprises a liquid containing disc and a transparent cover plate covering the liquid containing disc, and a level bubble is formed between the liquid containing disc and the transparent cover plate. The center of the transparent cover plate is provided with an annular scale line. The inclination direction and the inclination degree of the wind power foundation can be monitored and displayed by comparing the relative positions of the level bubble and the annular scale line.

Description

Technical Field

[0001] The utility model relates to the technical field of settlement detection, in particular to an absolute settlement monitoring device for an offshore wind power foundation. Background Art

[0002] With the continuous development of social economy and the continuous construction of modern cities, large and small wind power plants are being built continuously. The construction of wind power has brought great convenience to people's electricity consumption. At the same time, the increase in the number of wind power bases is conducive to alleviating the severe power pressure. Wind turbines are power equipment that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. Wind turbines generally consist of components such as wind wheels, generators (including devices), rectifiers (tail fins), towers, speed limit safety mechanisms and energy storage devices. Offshore wind resources are better than onshore ones. The offshore wind speed 10 kilometers offshore is usually 20% higher than that on the coast, and there are few quiet wind periods at sea. In addition, offshore wind power does not occupy precious land resources and does not disturb people. Offshore wind power has a larger installed capacity per unit, a larger wind sweeping area, and more adequate use of wind resources. The demand for electricity in coastal areas is large, which helps accelerate the energy transformation in coastal areas.

[0003] However, due to the fact that most of my country's offshore areas have soft foundation conditions such as silt and silty clay, and are affected by strong winds all year round, the strength of the foundation is very important when building a wind turbine foundation. If the foundation is not strong enough, after the wind turbine foundation is built, the settlement of the foundation will cause cracks and depressions on the ground, thereby damaging the wind turbine foundation. At the same time, cracks and depressions on the ground wind turbine foundation will lead to power accidents, posing a great threat to people's lives and property.

[0004] This requires settlement monitoring during the construction of wind power infrastructure, which is currently usually carried out using absolute settlement monitoring devices.

[0005] In the prior art, for example, a Chinese utility model patent with authorization announcement number CN218097724U discloses "an offshore wind power foundation absolute settlement monitoring device". The device includes a round block, a measuring tube is welded at the bottom center of the round block, a measuring rod is slidably embedded in the measuring tube, two sliding grooves are correspondingly provided on both sides of the measuring tube, two sliding rods are welded at the top on both sides of the measuring rod, the two sliding rods extend to the outside of the two sliding grooves respectively, a measuring block is welded at the bottom of the measuring rod, scale marks are evenly engraved on the outer wall of the measuring rod, four calibration disks are evenly connected to the periphery of the round block by screws, two positioning blocks are welded on the outer wall of the round block, positioning rods are welded on the corresponding sides of the two positioning blocks, and a positioning rod is sleeved on the outer wall of the positioning rod. There is a support rod a, the other end of the support rod a is threadedly connected to a threaded rod a, the other end of the threaded rod a is sleeved with a support rod b, a T-shaped rod is welded along the width midline of the calibration disk, a round sleeve is sleeved on the outer wall of the T-shaped rod, a pointer is welded on the bottom of the round sleeve, transparent glass is embedded in the front of the calibration disk, a calibration block is welded on the outer wall of the round block, a fixed block is welded on the front of the measuring tube, a threaded rod b is slidably embedded in the fixed block, a U-shaped block is welded at one end of the threaded rod b close to the two slide grooves, two limit rods are welded on the same side of the U-shaped block, the two limit rods extend through the fixed block, a spring is sleeved on the outer wall of the threaded rod b between the U-shaped block and the fixed block, and a threaded sleeve is sleeved on the other side of the threaded rod b located on the fixed block.

[0006] During actual use, check whether the four pointers on all sides are aligned with the calibration block. Since the circular sleeve can rotate on the T-shaped rod, the pointer will always point downward vertically to the ground under the action of its own weight. When the circular block tilts, the pointer points away from the calibration block. You can turn the corresponding threaded rod a to adjust the height of the corresponding side until the four pointers are aligned with the four calibration blocks. At this time, the measuring rod will be in a vertical direction, avoiding errors in the detection data due to the tilt of the measuring rod and ensuring the accuracy of the detection data.

[0007] However, in actual use, since the offshore wind speed in the nearshore area is usually 20% higher than that in the coastal area, and there are rarely calm wind periods at sea, the wind power foundation is affected by strong winds all year round. In addition to the settlement problem, tilting may also occur.

[0008] The above-mentioned monitoring device can monitor the settlement phenomenon, but for the tilt situation, the above-mentioned monitoring device can only use the four pointers on the four sides to observe whether the tilt occurs. At the same time, since the above-mentioned monitoring device only has four calibration disks set on the four sides, it cannot well reflect the tilt situation at any angle, and cannot accurately monitor and display the tilt direction and degree. It cannot monitor the settlement and tilt conditions of the wind power foundation at the same time. The functionality is poor and has certain limitations. Utility Model Content

[0009] The technical problem to be solved by the utility model is to provide an absolute settlement monitoring device for an offshore wind power foundation. By utilizing a settlement measuring mechanism, the settlement can be monitored by observing the displacement of a sliding part on a fixed part. By utilizing a horizontal calibration mechanism, during the monitoring work, by observing whether the position of a level bubble is offset, it can be determined whether the wind power foundation is tilted due to the influence of the foundation and sea breeze. By comparing the relative positions of the level bubble and the annular scale line, the offset angle and distance of the level bubble can be determined, thereby accurately monitoring and displaying the tilt direction and degree of the wind power foundation, thereby improving practicality and monitoring accuracy.

[0010] In response to the above technical problems, the technical solution provided by the utility model is an absolute settlement monitoring device for an offshore wind power foundation, comprising a monitoring platform, two support rods are symmetrically arranged on both sides of the monitoring platform, a settlement measuring mechanism is arranged at the lower end of the monitoring platform, the settlement measuring mechanism comprises a fixing part fixed on the monitoring platform, and a sliding part slidably arranged on the fixing part, the fixing part or the sliding part is provided with a settlement scale extending along its sliding path, a horizontal calibration mechanism is arranged on the upper end surface of the monitoring platform, the horizontal calibration mechanism comprises a liquid collecting pan, and a transparent cover plate covered on the liquid collecting pan, a level bubble is formed between the liquid collecting pan and the transparent cover plate, and a ring scale line is arranged at the center of the transparent cover plate.

[0011] Furthermore, an installation cavity adapted to the liquid receiving tray is provided on the upper end surface of the monitoring platform.

[0012] Furthermore, the monitoring platform is a truncated platform, the liquid receiving tray is a circular tray, and the monitoring platform and the liquid receiving tray are arranged concentrically.

[0013] Furthermore, the support rod is a telescopic rod, the upper end of the support rod is hingedly connected to the monitoring platform, and the lower end of the support rod is used to be hingedly connected to the wind power foundation.

[0014] Furthermore, the telescopic rod comprises a first internally threaded sleeve, a second internally threaded sleeve and a screw rod, the screw rod is arranged between the first internally threaded sleeve and the second internally threaded sleeve, and two ends of the screw rod are respectively threadedly connected to the first internally threaded sleeve and the second internally threaded sleeve.

[0015] Furthermore, a turntable is provided on the screw rod extending radially outward.

[0016] Furthermore, an adjuster is arranged between the upper end of the support rod and the monitoring platform, and the adjuster includes a fixed seat and a rotating seat. The rotating seat is rotatably mounted on the fixed seat, and the rotation axis of the rotating seat is parallel to the upper end surface of the monitoring platform. The fixed seat is provided with an annular groove on the end surface facing the rotating seat, and the internal dimension of the annular groove is larger than its opening dimension. An adjusting nut is slidably embedded in the annular groove, and the rotating seat is fixed to the fixed seat by a fastening bolt adapted to the adjusting nut.

[0017] Furthermore, the fixing member includes a measuring cylinder fixedly arranged on the lower end surface of the monitoring platform, the sliding member includes a measuring rod slidably arranged inside the measuring cylinder, the measuring cylinder is provided with a slideway extending along the sliding route, the outer peripheral sliding sleeve of the measuring cylinder is provided with a lifting ring, and the lifting ring is connected to the measuring rod via a sliding rod slidably arranged in the slideway.

[0018] Furthermore, the lower end of the measuring rod is hinged to a chassis via a ball joint.

[0019] Furthermore, the settlement scale is arranged at a position on the outer circumference of the measuring vertical cylinder corresponding to the slideway.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) The settlement measurement mechanism can be used to monitor the settlement by observing the displacement of the sliding part on the fixed part. The horizontal calibration mechanism can be used to determine whether the wind turbine foundation is tilted due to the influence of the foundation and sea breeze by observing whether the position of the level bubble is offset during monitoring work. By comparing the relative position of the level bubble and the annular scale line, the angle and distance of the offset of the level bubble can be determined, and then the tilt direction and degree of the wind turbine foundation can be accurately monitored and displayed, thereby improving practicality and monitoring accuracy.

[0022] (2) The monitoring platform and the liquid tray are arranged concentrically, so that the movement of the level bubble corresponds to the movement of the monitoring device, and the level bubble can be used to more intuitively show the inclination direction and amplitude of the wind turbine foundation.

[0023] (3) The support rod is a telescopic rod. The monitoring platform can be leveled by adjusting the telescopic length of the telescopic rod to facilitate subsequent settlement and tilt monitoring.

[0024] (4) The telescopic rod comprises a first internally threaded sleeve, a second internally threaded sleeve and a screw rod, and the overall length of the telescopic rod can be conveniently adjusted by rotating the screw rod.

[0025] (5) By using the regulator in conjunction with the telescopic rod, the upper end surface of the monitoring device can be in a horizontal state during installation, so that the horizontal bubble is initially located in the center of the liquid tray, thereby improving the accuracy of tilt monitoring. At the same time, the settlement measurement mechanism can be arranged vertically, thereby improving the accuracy of settlement monitoring.

[0026] (6) The lower end of the measuring rod is hinged to the chassis through a ball joint, so that the chassis can always be attached to the wind turbine foundation. It can well adapt to the situation where the wind turbine base is tilted or the ground itself has a certain slope, providing accuracy in settlement monitoring.

[0027] (7) The lifting ring is arranged on the outer circumference of the measuring cylinder, and the settlement scale is arranged at the position of the outer circumference of the measuring cylinder corresponding to the slideway, so that the settlement amplitude can be read simply and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the planar structure of an absolute settlement monitoring device for an offshore wind power foundation in Example 1 of the utility model.

[0029] Figure 2 It is a three-dimensional structural schematic diagram of an absolute settlement monitoring device for offshore wind power foundation in Example 1 of the utility model.

[0030] Figure 3 It is a structural schematic diagram of the horizontal calibration mechanism in Example 1 of the utility model.

[0031] Figure 4 It is a schematic diagram of the installation of the fixing base, the fixing member and the monitoring platform in Example 1 of the utility model.

[0032] Figure 5 It is a structural schematic diagram of the rotating seat in Example 1 of the utility model.

[0033] Figure 6 A schematic structural diagram of the movable part in Embodiment 1 of the present invention.

[0034] In the figure: 1. settlement measuring mechanism; 11. fixing member; 111. measuring cylinder; 112. slideway; 113. settlement scale; 12. sliding member; 121. sliding rod; 122. lifting ring; 123. measuring rod; 124. chassis; 125. sphere; 2. fixing plate; 3. wind power foundation; 4. supporting rod; 41. first internal threaded sleeve; 42. screw rod; 43. turntable; 44. second internal threaded sleeve; 5. regulator; 51. fixing seat; 52. rotating seat; 53. rotating hole; 54. annular groove; 55. fastening bolt; 56. rotating table; 561. large diameter section; 57. adjusting nut; 6. monitoring station; 61. installation cavity; 7. horizontal calibration mechanism; 71. liquid tray; 72. lap ring; 73. screw; 74. transparent cover; 75. annular scale line. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application: Specific embodiment 1:

[0037] refer to Figures 1 to 6 The utility model is an offshore wind power foundation absolute settlement monitoring device (hereinafter referred to as the measuring device), comprising a monitoring platform 6, two support rods 4 are symmetrically arranged on both sides of the monitoring platform 6, and a settlement measuring mechanism 1 is arranged at the lower end of the monitoring platform 6. The settlement measuring mechanism 1 comprises a fixing member 11 fixed on the monitoring platform 6 and a sliding member 12 slidably arranged on the fixing member 11. The sliding path of the sliding member 12 on the fixing member 11 is perpendicular to the lower end surface of the monitoring platform 6, and the fixing member 11 is provided with a settlement scale 113 extending along its sliding path. The settlement measuring device can be used to monitor the settlement of the offshore wind power foundation 3.

[0038] In this embodiment, a horizontal calibration mechanism 7 is provided on the upper end surface of the monitoring platform 6. The horizontal calibration mechanism 7 includes a liquid receiving tray 71 and a transparent cover plate 74 covering the liquid receiving tray 71. The liquid receiving tray 71 contains a solution, and a level bubble is formed between the liquid receiving tray 71 and the transparent cover plate 74. A ring scale line 75 is provided in the center of the transparent cover plate 74.

[0039] Specifically, in the present embodiment, the solution is a mixed liquid containing ethylene glycol, alcohol, water and glycerin. The content of the solution is such that when the transparent cover plate 74 is covered, a level bubble is formed. In the present embodiment, the annular scale line 75 includes a plurality of groups of annular lines arranged concentrically, angles are marked on the annular lines, and the annular scale line 75 also includes a plurality of straight line segments extending radially outward from the center of the annular scale line 75, and displacement scales are marked on the straight line segments. Alternatively, in other embodiments, directions such as east, west, south and north can be marked on the annular lines, and angles can be marked on adjacent directions, so that the inclination direction and degree of inclination can be determined by combining the annular lines with the straight line segments.

[0040] By utilizing the horizontal calibration mechanism 7, during monitoring work, by observing whether the position of the level bubble is offset, it is determined whether the wind power foundation 3 is tilted due to the influence of the foundation and sea breeze. By comparing the relative position of the level bubble and the annular scale line 75, the direction and distance of the offset of the level bubble can be determined, and then the tilt direction and degree of the wind power foundation 3 can be accurately monitored and intuitively displayed, thereby improving practicality and monitoring accuracy.

[0041] In this embodiment, if Figure 3 , 4As shown, a mounting cavity 61 adapted to a liquid receiving tray 71 is provided on the upper end surface of the monitoring station 6. A countersunk hole is provided at the upper opening of the mounting cavity 61, and a lap ring 72 adapted to the countersunk hole is provided at the upper end of the liquid receiving tray 71, so that the liquid receiving tray 71 can be sunk into the mounting cavity 61 as a whole. The liquid receiving tray 71 is sealed with a transparent cover plate 74 and fixed by screws 73.

[0042] In this embodiment, preferably, the monitoring platform 6 is a round platform, the liquid receiving tray 71 is a round tray, and the monitoring platform 6 is arranged concentrically with the liquid receiving tray 71. In this way, the movement of the level bubble corresponds to the movement of the monitoring device, and the level bubble can be used to more intuitively show the tilt direction and amplitude of the wind turbine foundation 3.

[0043] In this embodiment, the support rod 4 is a telescopic rod, the upper end of the support rod 4 is hingedly connected to the monitoring platform 6, the lower end of the support rod 4 is hingedly connected to the fixing plate 2, and the lower end of the fixing plate 2 is fixed to the wind power foundation 3, so that the lower end of the support rod 4 is hingedly connected to the wind power foundation 3. The support rod 4 is a telescopic rod, and the monitoring platform 6 can be leveled by adjusting the telescopic length of the telescopic rod, which is convenient for subsequent settlement and tilt monitoring.

[0044] Specifically, Figure 1 , 2 As shown, the telescopic rod includes a first internal thread sleeve 41, a second internal thread sleeve 44 and a screw rod 42. The upper end of the first internal thread sleeve 41 is connected to the monitoring station 6, and the lower end of the second internal thread sleeve 44 is connected to the wind power foundation 3. The opposite ends of the first internal thread sleeve 41 and the second internal thread sleeve 44 are both provided with internal threads extending inward and adapted to the screw rod 42. The screw rod 42 is arranged between the first internal thread sleeve 41 and the second internal thread sleeve 44, and the two ends of the screw rod 42 are respectively penetrated and connected to the threads of the first internal thread sleeve 41 and the second internal thread sleeve 44. Specifically, the internal threads on the first internal thread sleeve 41 and the second internal thread sleeve 44 are rotated in opposite directions, so that the first internal thread sleeve 41 and the second internal thread sleeve 44 can be moved toward or away from each other by rotating the screw rod 42, thereby adjusting the length of the support rod 4 to achieve telescoping.

[0045] Of course, in other embodiments, the internal threads on the first internally threaded sleeve 41 and the second internally threaded sleeve 44 can have the same rotation direction. At this time, the threads on both sides of the axial direction of the screw rod 42 have opposite rotation directions. The screw rod 42 is a bidirectional screw rod 42. In this way, by rotating the screw rod 42, the first internally threaded sleeve 41 and the second internally threaded sleeve 44 can also move toward or away from each other, thereby realizing the extension and retraction of the support rod 4.

[0046] Alternatively, in other embodiments, the support rod 4 may only be provided with an internally threaded sleeve. Specifically, the support rod 4 includes an internally threaded sleeve, a screw rod 42 and a support sleeve. The upper end of the internally threaded sleeve is hinged on the monitoring platform 6, and the screw rod 42 is threadedly connected to the lower end of the internally threaded sleeve. The lower end of the screw rod 42 is a smooth section and is rotatably installed in the support sleeve through a bearing. The lower end of the support sleeve is hingedly connected to the wind turbine base. In this way, the internally threaded sleeve can be driven to move by rotating the screw rod 42, thereby realizing the extension and retraction of the support rod 4.

[0047] Or in other embodiments, the telescopic rod includes a supporting sleeve and a sliding rod including a sliding arrangement, and a pin hole is provided on the supporting sleeve. When the sliding rod slides to a specified position, the pin shaft is screwed in the pin hole, and the inner end of the pin shaft abuts against the sliding rod to fix the sliding rod, thereby realizing the extension and retraction of the telescopic rod.

[0048] Preferably, in this embodiment, Figure 2 As shown, a turntable 43 is provided on the screw rod 42 extending radially outward, and the specific turntable 43 is a circular ring structure, so that the turntable 43 is convenient for driving the screw rod 42 to rotate. Of course, in other embodiments, the turntable 43 can also be two protrusions extending outward along the circumference of the screw rod 42. The two protrusions are symmetrically arranged to form a handle, and the handle is used to drive the screw rod 42 to rotate.

[0049] In this embodiment, an adjuster 5 is provided between the upper end of the support rod 4 and the monitoring platform 6, and the support rod 4 is connected to the monitoring platform 6 through the adjuster 5. Specifically, the adjuster 5 includes a fixed seat 51 and a rotating seat 52, the fixed seat 51 is fixedly mounted on the monitoring platform 6, and the rotating seat 52 is hingedly connected to the support rod 4 at one side facing the support rod 4.

[0050] The rotating seat 52 is rotatably mounted on the fixed seat 51, and the rotation axis of the rotating seat 52 is parallel to the upper end surface of the monitoring platform 6, so that the monitoring platform 6 can rotate along the rotation axis. Specifically, a rotating hole 53 is opened at the center of the fixed seat 51, and a rotating platform 56 is arranged on the side of the rotating seat 52 facing the fixed seat 51, and the rotating platform 56 cooperates with the rotating hole 53 and rotates and fits.

[0051] Specifically, the rotating hole 53 is a through hole, and the hole diameter of the rotating hole 53 facing away from the rotating seat 52 is larger than the hole diameter of the rotating hole 53 facing the rotating seat 52, so that the cross section of the rotating hole 53 is T-shaped. Figure 5As shown, the end of the rotating platform 56 facing the fixed seat 51 is provided with a large diameter section 561 extending outward in the circumferential direction, the cross section of the entire rotating platform 561 is adapted to the cross section of the rotating hole 53, and the large diameter section 561 rotates in the large diameter hole of the rotating hole 53, so as to prevent the rotating seat 52 from slipping out of the fixed seat 51 when rotating. During installation, before fixing the fixed seat 51 on the monitoring platform 6, the rotating platform 56 is first inserted into the rotating hole 53 from the inside to the outside, and then the end of the rotating platform 56 facing away from the fixed seat 51 is fixed on the rotating seat 52, and then the fixed seat 51 is fixed on the monitoring platform 6 to complete the installation.

[0052] In this embodiment, the end surface of the fixed seat 51 facing the rotating seat 52 is provided with an annular groove 54, the inner dimension of the annular groove 54 is larger than the opening dimension thereof, an adjusting nut 57 is slidably embedded in the annular groove 54, the adjusting nut 57 is entirely sunk into the annular groove 54, and the opening of the annular groove 54 restricts the adjusting nut 57 from coming out, and the rotating seat 52 is fixed to the fixed seat 51 by a fastening bolt 55 adapted to the adjusting nut 57. Two fastening bolts 55 are symmetrically arranged on the rotating seat. In this embodiment, as shown in FIG. Figure 5 As shown, the adjusting nut 57 is hemispherical as a whole, and the annular groove 54 is a T-shaped groove adapted to the adjusting nut 57 , so that the adjusting nut 57 can slide in the annular groove 54 and will not fall out.

[0053] In order to facilitate the installation of the adjusting nut 57 into the annular groove 54, in the present embodiment, a notch (not shown in the figure) extending radially inward is provided at the upper end of the fixing seat 51, and the inner side of the notch is communicated with the annular groove 54, and the size of the notch is adapted to the size of the adjusting nut 57, so that the adjusting nut 57 can be easily installed into the annular groove 54.

[0054] In this embodiment, anti-skid protrusions (not shown in the figure) are provided on the groove wall of the annular groove 54, and the anti-skid protrusions are used to increase the friction between the fastening bolt 55 and the annular groove 54 to avoid slipping.

[0055] In this way, during actual installation, Figure 1 , 2 As shown, the level of the monitoring platform 6 can be corrected by using the regulator 5 in conjunction with the telescopic rod. When correcting, the turntable 43 is rotated to drive the screw 42 to rotate, so that the support rod 4 is extended and retracted, thereby driving the monitoring platform 6 to swing and adjust the left and right position of the level bubble in the liquid tray 71. By tightening the fastening bolt 55, the monitoring platform 6 can rotate relative to the telescopic rod, thereby driving the monitoring platform 6 to flip and adjust the front and rear position of the level bubble. When the level bubble in the liquid tray 71 is located at the center, the leveling is completed, and the fastening bolt 55 is tightened in the annular groove 54 to relatively fix the rotating seat 52 and the fixed seat 51.

[0056] In this embodiment, the fixing member 11 of the settlement measuring mechanism 1 includes a measuring column 111 fixedly arranged on the lower end surface of the monitoring platform 6, the sliding member 12 includes a measuring rod 123 slidably arranged inside the measuring column 111, a slideway 112 extending along the sliding route is provided on the measuring column 111, and a settlement scale 113 is arranged at a position corresponding to the slideway 112 on the periphery of the measuring column 111. A lifting ring 122 is provided on the periphery of the measuring column 111, and the lifting ring 122 is connected to the measuring rod 123 by a slideway 121 slidably arranged in the slideway 112. In this way, the lifting ring 122 is arranged on the periphery of the measuring column 111, and the settlement scale 113 is arranged at a position corresponding to the slideway 112 on the periphery of the measuring column 111, so that the settlement amplitude can be read simply and conveniently.

[0057] Specifically, two slideways 112 are symmetrically provided on both sides of the measuring cylinder 111 , and a slide rod 121 is slidably arranged in each slideway 112 . The inner end of the slide rod 121 is fixedly connected to the measuring rod 123 , and the outer end of the slide rod 121 is fixedly connected to the inner wall of the lifting ring 122 .

[0058] Preferably, the lower end of the measuring rod 123 is also hinged to the chassis 124 through a ball joint. Specifically, in the present embodiment, the ball joint includes a sphere 125, the lower part of the sphere 125 is fixedly mounted at the center of the chassis 124, and the lower end of the measuring rod 123 is rotatably mounted on the outer wall of the sphere 125. In this way, in actual use, if the wind turbine base is tilted or the ground itself has a certain slope, the chassis 124 can be flipped by using the ball joint, and it is always attached to the wind turbine foundation 3 to ensure the stability of the settlement monitoring work and provide the accuracy of the settlement monitoring.

[0059] Of course, in other embodiments, the ball joint may include a first ball joint support, a second ball joint support, and a ball 125 rotatably disposed therebetween. The specific structure is the same as that of the ball joint in the prior art and will not be repeated here.

[0060] Working principle and usage process of this application:

[0061] When working, first fix the two fixing plates 2 on the wind power foundation 3 to be tested about 10 kilometers offshore by bolts or welding. Then, with the assistance of the horizontal calibration mechanism 7, the horizontality of the monitoring platform 6 is corrected by the support rod 4 and the regulator 5 so that the initial position of the level bubble is in the center of the liquid tray 71.

[0062] The measuring rod 123 automatically descends under the action of gravity, so that the chassis 124 is placed on the ground, and the initial position of the lifting ring 122 on the measuring cylinder 111 is recorded at this time.

[0063] When monitoring the settlement, the settlement of the wind power foundation 3 is determined by observing whether the position of the lifting ring 122 on the measuring column 111 changes and how much the position changes.

[0064] By observing the position of the level bubble on the horizontal calibration mechanism 7 (whether the level bubble is offset), it is possible to determine whether the wind turbine base is tilted due to the influence of the foundation and sea breeze. By comparing the position of the annular scale line 75 with the level bubble, the tilt direction and amplitude of the wind turbine foundation 3 can be clearly found.

[0065] When the wind turbine foundation 3 is tilted or the ground itself has a certain slope, under the action of the sphere 125, the chassis 124 can flip at the bottom of the measuring rod 123, so that it can be close to the ground to ensure the stability of the settlement monitoring work. The settlement scale 113 set on the measuring column 111 can be used to clearly observe the settlement amplitude.

[0066] Embodiment 2: This embodiment provides a different sedimentation measuring mechanism. Different from Embodiment 1, in this embodiment, the sedimentation scale is arranged on the measuring rod.

[0067] Embodiment 3: This embodiment provides a different settlement measurement mechanism. Different from Embodiment 1, in this embodiment, the fixed part is a measuring rod, and the sliding part is a measuring vertical cylinder. At this time, the upper end of the measuring rod is fixed on the lower end surface of the monitoring platform.

[0068] Example 3: This example provides a different settlement measurement mechanism. Different from Example 1, in this example, when the installation surface of the wind power foundation is relatively horizontal, the support rod may not be a telescopic rod. In this case, the support rod is a straight rod. The upper end of the support rod is directly fixed on the monitoring platform, and the lower end of the support rod is also directly fixed on the wind power foundation. In actual production, it is necessary to ensure that the plane in which the two support rods are located is perpendicular to the upper end surface of the monitoring platform.

[0069] Example 4: This example provides a different sedimentation measurement mechanism. Different from Example 1, in this example, when actual use requirements are met, the upper end surface of the monitoring platform may not be provided with an installation cavity. In this case, the liquid containing tray is directly fixed on the upper end surface of the monitoring platform.

[0070] Example 5: This example provides a different sedimentation measurement mechanism. Different from Example 1, in this example, when meeting actual usage requirements, the monitoring platform can be a cubic structure, and the liquid containing plate can also be a square plate. In this case, the circle of the annular scale coincides with the center of the liquid containing plate.

[0071] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0072] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0073] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. An offshore wind power foundation absolute settlement monitoring device, characterized in that: It includes a monitoring platform, two supporting rods are symmetrically arranged on both sides of the monitoring platform, a settlement measuring mechanism is arranged at the lower end of the monitoring platform, the settlement measuring mechanism includes a fixing part fixed on the monitoring platform, and a sliding part slidably arranged on the fixing part, the fixing part or the sliding part is provided with a settlement scale extending along its sliding path, and a horizontal calibration mechanism is arranged on the upper end surface of the monitoring platform, the horizontal calibration mechanism includes a liquid receiving tray and a transparent cover plate covering the liquid receiving tray, a level bubble is formed between the liquid receiving tray and the transparent cover plate, and a ring scale line is arranged at the center of the transparent cover plate.

2. The absolute settlement monitoring device for offshore wind power foundation according to claim 1 is characterized in that: An installation cavity adapted to the liquid receiving tray is provided on the upper end surface of the monitoring platform.

3. The absolute settlement monitoring device for offshore wind power foundation according to claim 1 is characterized in that: The monitoring platform is a truncated platform, the liquid receiving tray is a circular tray, and the monitoring platform and the liquid receiving tray are arranged concentrically.

4. The absolute settlement monitoring device for offshore wind power foundation according to claim 1 is characterized in that: The support rod is a telescopic rod, the upper end of the support rod is hingedly connected to the monitoring platform, and the lower end of the support rod is used to be hingedly connected to the wind power foundation.

5. The absolute settlement monitoring device for offshore wind power foundation according to claim 4 is characterized in that: The telescopic rod comprises a first internally threaded sleeve, a second internally threaded sleeve and a screw rod, wherein the screw rod is arranged between the first internally threaded sleeve and the second internally threaded sleeve, and two ends of the screw rod are respectively threadedly connected with the first internally threaded sleeve and the second internally threaded sleeve.

6. The absolute settlement monitoring device for offshore wind power foundation according to claim 5 is characterized in that: A turntable is provided on the screw rod extending radially outward.

7. The absolute settlement monitoring device for offshore wind power foundation according to claim 4 is characterized in that: An adjuster is arranged between the upper end of the support rod and the monitoring platform, and the adjuster includes a fixed seat and a rotating seat. The rotating seat is rotatably mounted on the fixed seat, and the rotation axis of the rotating seat is parallel to the upper end surface of the monitoring platform. The end surface of the fixed seat facing the rotating seat is provided with an annular groove, and the internal dimension of the annular groove is larger than its opening dimension. An adjusting nut is slidably embedded in the annular groove, and the rotating seat is fixed to the fixed seat by a fastening bolt adapted to the adjusting nut.

8. The absolute settlement monitoring device for offshore wind power foundation according to claim 1 is characterized in that: The fixing part comprises a measuring cylinder fixedly arranged on the lower end surface of the monitoring platform, the sliding part comprises a measuring rod slidably arranged inside the measuring cylinder, a slideway extending along the sliding route is provided on the measuring cylinder, a lifting ring is provided on the outer peripheral sliding sleeve of the measuring cylinder, and the lifting ring is connected to the measuring rod via a sliding rod slidably arranged in the slideway.

9. The offshore wind power foundation absolute settlement monitoring device according to claim 8, characterized in that: The lower end of the measuring rod is hinged to a chassis via a ball joint.

10. The offshore wind power foundation absolute settlement monitoring device according to claim 8, characterized in that: The settlement scale is arranged at a position on the outer circumference of the measuring stand corresponding to the slideway.

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