Stress detection device for offshore wind turbine pile foundation
By designing a stress detection device for pile foundation of offshore fan including mounting base plate, mounting sleeve, clamping assembly and adjustment assembly, the problem of difficulty in controlling the position of the fixture during welding is solved, and a higher detection accuracy is achieved.
Patent Information
- Application Number
- CN202421319422.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The prior art is difficult to accurately control the position distance between the two fixtures during welding, resulting in the impact of detection accuracy.
A stress detection device for pile foundation of offshore fan is designed, and the installation structure includes a mounting base plate, a mounting sleeve, a clamping assembly and a adjustment assembly. Through the L-shaped structure of the clamping assembly and the screw mechanism of the adjustment assembly, the clamping position of the detector is ensured to be stable, and the distance between the two mounting sleeves is controlled.
By stably controlling the distance between the two clamping components, the detection accuracy is improved and the risk that the detection accuracy is affected by welding operations is reduced.
Smart Images
Figure CN222822356U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stress detection, in particular to a stress detection device for an offshore wind turbine pile foundation. Background Art
[0002] The foundation structure of offshore wind turbines is affected by wind loads, wave loads, tidal currents, seawater corrosion, etc. for a long time. Structural monitoring is one of the means to evaluate the safety status of the wind turbine foundation structure. Understand the state changes of the wind turbine pile foundation structure, discover abnormal signs in time, analyze the causes and take corresponding measures to ensure the safe and stable operation of the wind turbine. In order to understand the stress changes of the pile foundation during the operation of the wind turbine, it is necessary to monitor the stress of the pile foundation. The monitoring instrument generally uses a vibrating wire steel plate stress gauge. The principle of use of the vibrating wire steel plate stress gauge is: when the stress of the measured steel structure changes, it will drive the strain gauge to deform, and the deformation of the strain gauge is converted into a change in the stress of the vibrating wire, thereby changing the vibration frequency of the vibrating wire. The electromagnetic coil excites the vibrating wire and measures its vibration frequency. The frequency signal is transmitted to the reading device via a cable, and the strain of the steel structure can be measured.
[0003] The installation of the existing vibrating-wire steel plate stress gauge is to first weld the clamp to the inner wall of the pile foundation, then put the steel plate stress gauge into the clamp, and tighten the nut to clamp it. For this installation method, after the clamp is welded to the inner wall of the pile foundation, the position distance between the two clamps is fixed. However, it is difficult to achieve precise control during the welding process, resulting in a gap between the position distance between the two clamps and the gauge length. The gap between the position distance between the two clamps and the gauge length will affect the detection accuracy. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide a stress detection device for offshore wind turbine pile foundations to solve the technical problem that it is difficult to control the position distance between the two clamps during the welding process in the prior art, thereby affecting the detection accuracy.
[0005] The utility model is realized by the following technical solutions:
[0006] A stress detection device for an offshore wind turbine pile foundation comprises a detector and a mounting structure, wherein the mounting structure comprises two mounting base plates, both mounting base plates are slidably connected with mounting sleeves, the two mounting sleeves are respectively used to place the two ends of the detector, a clamping assembly is further arranged in the mounting sleeve, the clamping assembly comprises a plurality of clamping rods, the clamping rods comprise a horizontal portion and a vertical portion, the horizontal portion and the vertical portion of the clamping rod are connected to form an L-shaped structure, and are hinged to the mounting sleeves through the connection point between the horizontal portion and the vertical portion, and an adjustment assembly for adjusting the distance between the two mounting sleeves is arranged on the mounting base plate.
[0007] The two ends of the first screw and the second screw are respectively connected to the two convex sliding blocks, and the ...
[0008] Furthermore, a rotating portion is provided on one end of the first screw rod away from the mounting base plate, a plurality of rotating grooves are provided on the side wall of the rotating portion, and a rotating handle is detachably provided in any one of the rotating grooves.
[0009] Furthermore, a first limiting plate is provided on the first screw rod, and the first limiting plate abuts against the end of the connecting sleeve.
[0010] Furthermore, positioning rods are provided on opposite sides of the two mounting bases, and a positioning sleeve is provided between the two mounting bases. Both ends of the positioning sleeve are respectively sleeved outside the ends of the two positioning rods.
[0011] Furthermore, a second limiting plate is provided on one of the positioning rods, and the second limiting plate abuts against the end of the positioning sleeve.
[0012] Furthermore, limiting blocks are provided on opposite sides of the two mounting base plates.
[0013] Furthermore, a spring is provided between the horizontal portions of every two adjacent clamping rods, one end of the spring is connected to the horizontal portion of one of the clamping rods, and the other end of the spring is connected to the horizontal portion of the other clamping rod.
[0014] Furthermore, a clamping block is provided on the vertical portion of the clamping rod.
[0015] Furthermore, welding portions are provided on the sides of the bottom surfaces of the two mounting base plates.
[0016] The beneficial effects of the utility model are:
[0017] In the stress detection device for offshore wind turbine pile foundation, since the clamping position of the clamping assembly for the detector remains basically unchanged, the position distance between the two installation sleeves is relatively stable and not easy to change. Compared with the prior art, since it is difficult to control the distance between the two clamps during welding, there is a gap between the distance between the two clamps and the gauge length, which in turn affects the detection accuracy, the difference between the distance between the two clamps and the gauge length is reduced, so that it has higher detection accuracy.
[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0020] Figure 2 for Figure 1 The cross-sectional structure of Figure 1 ;
[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;
[0022] Figure 4 for Figure 1 The cross-sectional structure of Figure 2 ;
[0023] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;
[0024] Figure 6 It is a front view of an embodiment of the utility model;
[0025] Figure 7 It is a left side view of an embodiment of the utility model;
[0026] Figure 8 It is a top view of an embodiment of the utility model.
[0027] In the figure: detector 1, mounting base plate 2, mounting sleeve 3, clamping rod 4, slide groove 5, slider 6, connecting block 7, first screw 8, second screw 9, strip clamping part 10, connecting sleeve 11, clamping groove 12, rotating part 13, rotating handle 14, first limit plate 15, positioning rod 16, positioning sleeve 17, second limit plate 18, limit block 19, spring 20, clamping block 21, welding part 22. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0031] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0032] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.
[0033] See also Figure 1-8The utility model provides a technical solution: a stress detection device for an offshore wind turbine pile foundation, comprising a detector 1 and a mounting structure, the mounting structure comprising two mounting bases 2, both mounting bases 2 being slidably connected with mounting sleeves 3, the two mounting sleeves 3 being respectively used to place the two ends of the detector 1, a clamping assembly is also arranged in the mounting sleeve 3, the clamping assembly comprises a plurality of clamping rods 4, the clamping rod 4 comprises a horizontal part and a vertical part, the horizontal part and the vertical part of the clamping rod 4 are connected to form an L-shaped structure, and are hinged to the mounting sleeve 3 through the connection point between the horizontal part and the vertical part, and an adjustment assembly for adjusting the distance between the two mounting sleeves 3 is arranged on the mounting base 2.
[0034] When in use, firstly weld the two mounting base plates 2 on the pile foundation, use the adjustment assembly to slide the two mounting sleeves 3 in the direction away from each other, then place the two ends of the detector 1 in the mounting sleeve 3, and then use the adjustment assembly to slide the two mounting sleeves 3 in the direction close to each other. During the sliding process, the end of the detector 1 first contacts the horizontal part of the clamping rod 4. During the further sliding process, the end of the detector 1 gradually squeezes and pushes the horizontal part of the clamping rod 4, so that the horizontal part of the clamping rod 4 rotates upward with the connection point of the horizontal part and the vertical part and the hinge point of the mounting sleeve 3 as the rotation center. Correspondingly, the vertical part of the clamping rod 4 rotates downward with the connection point of the horizontal part and the vertical part and the hinge point of the mounting sleeve 3 as the rotation center, and gradually clamps the detector 1. After clamping, stop using the adjustment assembly and fix it. During the use of the clamping assembly, since the degree of squeezing and pushing the horizontal part of the clamping rod 4 by the end of the detector 1 is basically the same, the clamping part of the two ends of the detector 1 by the clamping assembly does not change, and the distance between the clamping parts of the two clamping assemblies on the detector 1 is basically unchanged. During the design, it is only necessary to pre-set the clamping position of the clamping assembly, which makes it easier to control the distance between the clamping parts of the two clamping assemblies, and thus it is also easier to determine the distance between the clamps. Compared with the prior art, since it is difficult to achieve precise control during the welding process, the difference between the position distance between the two clamps and the gauge length is easily affected by the welding operation, thereby affecting the detection accuracy. The difference between the distance between the two mounting sleeves 3 and the gauge length is reduced, so that it has higher detection accuracy.
[0035] Specifically, the detector 1 uses a SXB-15 vibrating-wire steel plate stress gauge.
[0036] Specifically, the end of the horizontal portion of the clamping rod 4 extends obliquely downward to form a contact portion. Through this design, the horizontal portion of the clamping rod 4 can more easily contact the end of the detector 1 during the sliding process of the mounting sleeve 3.
[0037] In this embodiment: two slide grooves 5 are provided on the two mounting base plates 2, and the two slide grooves 5 extend parallel to the length direction of the mounting base plates 2. Slide blocks 6 are provided in the two slide grooves 5, and the two slide blocks 6 are connected to the mounting sleeve 3. A connecting hole is provided between the two slide grooves 5, and the two slide blocks 6 are connected through the connecting hole. A connecting block 7 is provided in the connecting hole, and the two ends of the connecting block 7 are respectively connected to the side surfaces of the two convex slide blocks 6. The adjusting assembly includes a first screw rod 8 and a second screw rod 9 respectively installed on the two mounting base plates 2. The first screw rod 8 and the second The screw rod 9 is threadedly connected to the two connecting blocks 7 respectively, and the spiral directions of the threads are opposite. The ends of the first screw rod 8 and the second screw rod 9 that are close to each other are each provided with a strip-shaped clamping portion 10. A connecting sleeve 11 is provided between the two mounting base plates 2. A clamping groove 12 is provided on the inner wall of the connecting sleeve 11. The clamping groove 12 extends along the length direction of the connecting sleeve 11, and the two ends extend out of the two ends of the sleeve respectively. The ends of the first screw rod 8 and the second screw rod 9 are respectively located in the connecting sleeve 11, and the strip-shaped clamping portion 10 is clamped in the clamping groove 12.
[0038] When in use, the first screw rod 8 is rotated, and the second screw rod 9 will be driven to rotate together under the connection of the connecting sleeve 11. Since the first screw rod 8 and the second screw rod 9 are both threadedly connected to the two connecting blocks 7, and the spiral directions of the threads are opposite, when the first screw rod 8 is rotated, the two connecting blocks 7 will move away from or towards each other in the connecting hole at the same time. When approaching each other, the detector 1 can be clamped by the clamping assembly, and can be fixed with the help of the self-locking function of the screw rod, and will not move easily under the influence of external force; when moving away from each other, it is convenient to place and remove the detector 1. The design of the two sliders 6 and the slide groove 5 is to make the sliding of the installation sleeve 3 more stable.
[0039] Specifically, two ends of the mounting base plates 2 extend from opposite sides of the two connecting holes. This design allows the slider 6 and the connecting block 7 to be directly inserted from the ends of the connecting holes when being installed, making installation more convenient. The slider 6 and the connecting block 7 are integrated.
[0040] Specifically, the cross-sections of the slider 6 and the slide groove 5 are both in a convex shape, and the convex shape is designed to effectively prevent the slider 6 from detaching from the top of the mounting base plate 2.
[0041] In this embodiment: a rotating portion 13 is provided on one end of the first screw rod 8 away from the mounting base plate 2, a plurality of rotating grooves are provided on the side wall of the rotating portion 13, and a rotating handle 14 is detachably provided in any rotating groove.
[0042] By using the rotating part 13 and the rotating handle 14 as a labor-saving structure for rotating the first screw rod 8, when in use, the rotating handle 14 is inserted into the rotating groove, and then the rotating handle 14 is rotated, the rotating part 13 rotates, and then the first screw rod 8 is driven to rotate. When the rotating handle 14 is restricted by the pile foundation, the rotating handle 14 can be removed, and the rotating handle 14 can be inserted into another rotating groove and rotated again. This arrangement makes it more labor-saving to rotate the first screw rod 8 and is not easily restricted by the pile foundation.
[0043] In this embodiment, a first limiting piece 15 is provided on the first screw rod 8 , and the first limiting piece 15 abuts against the end of the connecting sleeve 11 .
[0044] By using the first limiting plate 15 as a limiting structure of the connecting sleeve 11, when installing the connecting sleeve 11, the end of the strip-shaped clamping portion 10 is facing the clamping groove 12, and the connecting sleeve 11 is moved toward the direction close to the first screw rod 8, so that the strip-shaped clamping portion 10 is engaged in the clamping groove 12. After the connecting sleeve 11 is moved to the end of the first limiting plate 15, the first limiting plate 15 plays a limiting role, hindering the further movement of the connecting sleeve 11.
[0045] Specifically, a magnet with opposite magnetic poles is provided on the opposite side of the connecting sleeve 11 and the first limiting plate 15. Through the suction force between the two magnets, the connecting sleeve 11 can be temporarily fixed to the first limiting plate 15, thereby making the connection of the connecting sleeve 11 to the first screw 8 and the second screw 9 more stable and not easy to move under the influence of external forces. Specifically, a magnet with opposite magnetic poles is also provided on the side of the connecting sleeve 11 facing away from the first limiting plate 15 and the side opposite to the mounting base plate 2. After the detector 1 is installed, the connecting sleeve 11 is moved away from the first limiting plate 15 until it moves to the end of the second screw 9, so that the two magnets attract each other, thereby preventing the connecting sleeve 11 from moving easily. The reason why the screws are separately set as the first screw 8 and the second screw 9 is that the screws set as one body will affect the axial stiffness of the detector 1 when the detector 1 detects, thereby affecting the detection accuracy. The first screw 8 and the second screw 9 are connected by the connecting sleeve 11, and the adjustment of the two mounting sleeves 3 can be achieved by turning one screw, which is also more convenient to use.
[0046] In this embodiment, positioning rods 16 are disposed on opposite sides of the two mounting base plates 2 , and a positioning sleeve 17 is disposed between the two mounting base plates 2 . Both ends of the positioning sleeve 17 are respectively sleeved outside the ends of the two positioning rods 16 .
[0047] The above arrangement uses the positioning rod 16 and the positioning sleeve 17 as a detachable connection structure between the two mounting base plates 2, and the positioning sleeve 17 is moved and the two ends of the positioning sleeve 17 are sleeved outside the ends of the positioning rod 16 to make them temporarily connected. The reason for this arrangement is that if the two positioning rods 16 are set as one body, the axial rigidity of the detector 1 will be affected during the detection of the detector 1, thereby affecting the detection accuracy. If the positioning rod 16 is not set, the two mounting base plates 2 cannot be positioned during welding, and the two mounting base plates 2 are difficult to keep on the same horizontal line, thereby affecting the subsequent fixing of the mounting sleeve 3 to the detector 1.
[0048] In this embodiment, a second limiting piece 18 is disposed on one positioning rod 16 , and the second limiting piece 18 abuts against the end of the positioning sleeve 17 .
[0049] By using the second limiting plate 18 as a limiting structure for the positioning sleeve 17 , the positioning sleeve 17 is moved toward the second limiting plate 18 until the end of the positioning sleeve 17 abuts against the second limiting plate 18 , and the second limiting plate 18 plays a limiting role, hindering further movement of the positioning sleeve 17 .
[0050] In this embodiment: limiting blocks 19 are provided on opposite sides of the two mounting base plates 2 .
[0051] By using the limiting block 19 as a limiting structure of the slider 6 , when the slider 6 slides, it can effectively prevent the slider 6 from sliding out from the side of the mounting base plate 2 close to the positioning sleeve 17 .
[0052] In this embodiment, a spring 20 is disposed between the horizontal portions of every two adjacent clamping rods 4 , one end of the spring 20 is connected to the horizontal portion of one of the clamping rods 4 , and the other end of the spring 20 is connected to the horizontal portion of the other clamping rod 4 .
[0053] By using the spring 20 as a reset structure of the clamping rod 4, when the first screw rod 8 is adjusted so that the two mounting sleeves 3 are close to each other, the horizontal part of the clamping rod 4 is opened, so that the spring 20 is in a stretched state. When the first screw rod 8 is adjusted so that the two mounting sleeves 3 are away from each other, the horizontal part of the clamping rod 4 is contracted under the elastic force of the spring 20, and then the vertical part of the clamping rod 4 is opened. When the detector 1 is placed next time, the vertical part of the clamping rod 4 is not easy to hinder the detector 1 from entering the mounting sleeve 3.
[0054] In this embodiment: a clamping block 21 is provided on the vertical portion of the clamping rod 4 .
[0055] By providing the clamping block 21, the vertical part of the clamping rod 4 can increase its clamping force when clamping the detector 1, so that it has a better clamping effect. Specifically, the clamping block 21 is made of a rigid material, and a clamping block 21 of a flexible material will affect the detection accuracy of the detector 1.
[0056] In this embodiment, welding portions 22 are provided on the sides of the bottom surfaces of the two mounting base plates 2 .
[0057] By providing the welding portion 22, when the installation base plate 2 is welded to the pile foundation, the welding space can be increased, and a better welding effect can be achieved.
[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A stress detection device for offshore wind turbine pile foundation, comprising a detector (1) and a mounting structure, characterized in that: The mounting structure comprises two mounting base plates (2), and mounting sleeves (3) are slidably connected to the two mounting base plates (2). The two mounting sleeves (3) are respectively used to place the two ends of the detector (1). A clamping assembly is also arranged in the mounting sleeve (3), and the clamping assembly comprises a plurality of clamping rods (4). The clamping rods (4) comprise a horizontal portion and a vertical portion. The horizontal portion and the vertical portion of the clamping rod (4) are connected to form an L-shaped structure, and are hinged to the mounting sleeve (3) through the connection point between the horizontal portion and the vertical portion. An adjustment assembly for adjusting the distance between the two mounting sleeves (3) is arranged on the mounting base plate (2).
2. The stress detection device for offshore wind turbine pile foundation according to claim 1, characterized in that: Two slide grooves (5) are provided on the two mounting base plates (2), and the two slide grooves (5) extend in parallel along the length direction of the mounting base plates (2). Slide blocks (6) are provided in the two slide grooves (5), and the two slide blocks (6) are connected to the mounting sleeve (3). A connecting hole is provided between the two slide grooves (5), and the two slide blocks (6) are connected through the connecting hole. A connecting block (7) is provided in the connecting hole, and the two ends of the connecting block (7) are respectively connected to the side surfaces of the two convex slide blocks (6). The adjusting component comprises a first screw rod (8) and a second screw rod (9) respectively installed on the two mounting base plates (2), and the first screw rod (8) and the second screw rod (9) are respectively installed on the two mounting base plates (2). The second screw rod (9) is respectively threadedly connected to the two connection blocks (7), and the spiral directions of the threads are opposite. The ends of the first screw rod (8) and the second screw rod (9) that are close to each other are each provided with a strip-shaped clamping portion (10). A connecting sleeve (11) is provided between the two mounting base plates (2). A clamping groove (12) is provided on the inner wall of the connecting sleeve (11). The clamping groove (12) extends along the length direction of the connecting sleeve (11), and the two ends extend out of the two ends of the sleeve respectively. The ends of the first screw rod (8) and the second screw rod (9) are respectively located in the connecting sleeve (11), and the strip-shaped clamping portion (10) is clamped in the clamping groove (12).
3. The stress detection device for offshore wind turbine pile foundation according to claim 2 is characterized in that: A rotating portion (13) is provided on one end of the first screw rod (8) away from the mounting base plate (2), and a plurality of rotating grooves are provided on the side wall of the rotating portion (13), and a rotating handle (14) is detachably provided in any one of the rotating grooves.
4. The stress detection device for offshore wind turbine pile foundation according to claim 3 is characterized in that: The first screw rod (8) is provided with a first limiting plate (15), and the first limiting plate (15) abuts against the end of the connecting sleeve (11).
5. The stress detection device for offshore wind turbine pile foundation according to any one of claims 1 to 4, characterized in that: Positioning rods (16) are arranged on opposite sides of the two mounting base plates (2), and a positioning sleeve (17) is arranged between the two mounting base plates (2). The two ends of the positioning sleeve (17) are respectively sleeved outside the ends of the two positioning rods (16).
6. The stress detection device for offshore wind turbine pile foundation according to claim 5, characterized in that: A second limiting plate (18) is provided on one of the positioning rods (16), and the second limiting plate (18) abuts against the end of the positioning sleeve (17).
7. The stress detection device for offshore wind turbine pile foundation according to claim 6, characterized in that: Limiting blocks (19) are arranged on opposite sides of the two mounting base plates (2).
8. The stress detection device for offshore wind turbine pile foundation according to claim 7, characterized in that: A spring (20) is provided between the horizontal parts of each two adjacent clamping rods (4), one end of the spring (20) is connected to the horizontal part of one of the clamping rods (4), and the other end of the spring (20) is connected to the horizontal part of the other clamping rod (4).
9. The stress detection device for offshore wind turbine pile foundation according to claim 8, characterized in that: The vertical portion of the clamping rod (4) is provided with a clamping block (21).
10. The stress detection device for offshore wind turbine pile foundation according to claim 9, characterized in that: The bottom side edges of the two installation base plates (2) are both provided with welding portions (22).