An offshore wind power bolt assembly assembly system and assembly method

Abstract

The present invention provides an offshore wind power bolt assembly assembly system and an assembly method, wherein the assembly system includes a bolt assembly, wherein the bolt assembly includes an upper anchor plate and a lower anchor plate, wherein the upper anchor plate and the lower anchor plate are assembled by screws, wherein the upper anchor plate is provided with a first nut and a second nut on the upper and lower sides, respectively, and the lower anchor plate is provided with a third nut and a fourth nut on the upper and lower sides; a lifting fixture, wherein a lifting fixture for lifting the upper anchor plate is provided along the edge of the upper anchor plate; an assembly fixture, wherein the assembly fixture includes a first support body and a second support body respectively supporting the lifting fixture and the upper anchor plate, wherein the first support body and the second support body are arranged at intervals; and a support seat, wherein a support seat for supporting the lower anchor plate is provided at the bottom of the assembly fixture. The present invention improves assembly efficiency by providing different supports for the upper and lower anchor plates and adjusting the lifting of the upper anchor plate without the need for lifting screws.

Description

Technical Field

[0001] The present invention relates to the technical field of installation of offshore wind power assemblies, and in particular to an offshore wind power bolt assembly assembly system and an assembly method. Background Art

[0002] The foundation ring is the earliest connection section used for wind turbine generator sets. This type of foundation is prone to a series of problems such as concrete detachment and water seepage during the operation of the wind turbine. As a result, the industry has developed a new type of wind turbine foundation - prestressed anchor bolt foundation. The use of prestressing improves the integrity of the wind turbine foundation and overcomes the shortcomings of the foundation ring foundation, such as sudden changes in strength and stiffness, which are prone to brittle failure. Therefore, prestressed anchor bolt foundations have been increasingly widely used, among which the anchor bolt assembly (also known as the anchor bolt cage) is its main component. The installation and tensioning construction process of the anchor bolt assembly is relatively complex compared to the foundation ring. This paper studies a complete set of prestressed anchor bolt assembly assembly and installation construction technology for the anchor bolt assembly structure. Summary of the invention

[0003] The purpose of the present invention is to provide an offshore wind power bolt assembly assembly system and an assembly method. The assembly system supports anchor plates at different positions by adding support bodies of different heights, while changing the assembly sequence of bolts in use and the assembly sequence of nuts in the bolts, thereby achieving easy assembly.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0005] An offshore wind power bolt assembly assembly system, comprising:

[0006] A bolt assembly comprises an upper anchor plate and a lower anchor plate, wherein the upper anchor plate and the lower anchor plate are assembled by screw rods, a first nut and a second nut are respectively arranged on the upper and lower sides of the upper anchor plate, and a third nut and a fourth nut are arranged on the upper and lower sides of the lower anchor plate.

[0007] A lifting tool is provided along the edge of the upper anchor plate for lifting the upper anchor plate;

[0008] An assembling tool, the assembling tool comprising a first support body and a second support body respectively supporting the lifting tool and the upper anchor plate, the first support body and the second support body being arranged at an interval;

[0009] A support seat is provided at the bottom of the assembling tooling and is used to support the lower anchor plate.

[0010] As a further improvement of the present invention, the assembly tool comprises a lower filling frame close to the lower anchor plate and an upper filling frame close to the upper anchor plate, and inner support components are arranged in the upper filling frame and the lower filling frame.

[0011] As a further improvement of the present invention, the upper filling rack and the lower filling rack form a centrally symmetrical structure concentric with the inner support assembly, and the inner support assembly is radially arranged in the upper and lower filling racks respectively.

[0012] As a further improvement of the present invention, there are several support seats, and the several support seats are arranged between the first support body and the second support body, and the avoidance in the lifting of the upper anchor plate and the assembly of the lower anchor plate are achieved by movement.

[0013] As a further improvement of the present invention, U-shaped shelf grooves are formed on the tops of the first supporting body and the second supporting body.

[0014] The present invention also discloses an offshore wind power bolt assembly assembly method, comprising the following steps:

[0015] The first support body is used to support the lifting tooling, so that the upper anchor plate is temporarily suspended on the assembly tooling;

[0016] Pass the screw rod with the second nut and the third nut through the bottom of the upper anchor plate from bottom to top, and complete the assembly of the upper anchor plate and the screw rod;

[0017] On the upper surface of the upper anchor plate, assemble a first nut to fix the upper anchor plate;

[0018] Lift the lifting tool on the upper anchor plate, drive the upper anchor plate with the screw to lift and rotate it circumferentially to the set position, so that the screw moves downward, and the upper anchor plate is supported by the second support body. At the same time, the screw is inserted into the lower anchor plate located on the support seat, and the fourth nut is assembled at the bottom of the lower anchor plate to form a bolt assembly.

[0019] As a further improvement of the present invention, it also includes the installation of the lower anchor plate, specifically: adjusting the positions of a plurality of support seats to form a supporting space matching the lower anchor plate, and placing the lower anchor plate stably in the supporting space by leveling.

[0020] As a further improvement of the present invention, the upper anchor plate is temporarily suspended on the assembly tooling by: using a lifting device to lift the lifting tooling to the first support body, and fixing and limiting it through a number of U-shaped resting grooves on the first support body.

[0021] As a further improvement of the present invention, the upper anchor plate with a screw is rotated circumferentially to a set position as follows: a plurality of the first support bodies and the second support bodies form a circular trajectory, and the lifting tooling is rotated so that it rotates from the first support body until the upper anchor plate corresponds to the second support body that is closest to the first support body.

[0022] As a further improvement of the present invention, the screw rod is inserted into the lower anchor plate on the support seat by arranging a plurality of support seats between the first support body and the second support body along the circular trajectory, and the screw rod falls into the lower anchor plate on the support seat when moving downward.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The whole system can be assembled using the original designed screw holes and screws, without the need for other auxiliary screws and nuts.

[0025] 2. Through this assembly system, the height difference between the cross-bracing rotating hanger and the supporting column is cleverly utilized to meet the requirements of the screw rod passing through the screw holes of the upper and lower anchor plates.

[0026] 3. The octagonal assembly bracket ensures the safety of the assembly process and reduces the diagonal bracing process.

[0027] 4. The octagonal assembly bracket system reduces the frequent use of lifting equipment, making each process a static installation, ensuring the quality and safety of the installation.

[0028] 5. Compared with traditional assembly technology, the four supporting screws have the risk of deformation and displacement. This assembly system uses an octagonal assembly bracket as a load-bearing structure, which has a firm structure.

[0029] 6. Compared with the traditional assembly technology, the cross hanger adopts 16 screw holes to bear the force, which has a larger force bearing area than 4 screw holes, reducing the deformation of the anchor plate. It more effectively ensures the horizontality of the anchor assembly with a precision of 2mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an offshore wind power bolt assembly assembly system provided by the present invention;

[0031] Figure 2 It is a structural schematic diagram of the assembly tool provided by the present invention;

[0032] Figure 3 It is a top view of the assembly tool provided by the present invention;

[0033] Figure 4 It is a structural schematic diagram of the lifting tool provided by the present invention;

[0034] Figure 5 It is a schematic diagram of a flow chart of an offshore wind power bolt assembly assembly method provided by the present invention;

[0035] In the figure:

[0036] 100. Bolt assembly; 110. Upper anchor plate; 111. First nut; 120. Lower anchor plate; 121. Third nut; 130. Screw rod; 200. Assembly tool; 210. First support body; 220. Second support body; 230. Internal support assembly; 240. Upper filling rack; 250. Lower filling rack; 300. Support seat; 310. Support part; 400. Lifting tool. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0038] See attached Figure 1-5 As shown, an offshore wind power bolt assembly assembly system of the present invention comprises:

[0039] The bolt assembly 100 includes an upper anchor plate 110 and a lower anchor plate 120, which are assembled by a screw rod 130. The upper anchor plate 110 is provided with a first nut 111 and a second nut on the upper and lower sides, respectively, and the lower anchor plate 120 is provided with a third nut 121 and a fourth nut on the upper and lower sides.

[0040] A lifting tool 400 is provided along the edge of the upper anchor plate 110 for lifting the upper anchor plate 110;

[0041] An assembling tool 200, wherein the assembling tool 200 comprises a first support body 210 and a second support body 220 respectively supporting the hoisting tool 400 and the upper anchor plate 110, wherein the first support body 210 and the second support body 220 are arranged at an interval;

[0042] A support seat 300 is provided at the bottom of the assembling tool 200 for supporting the lower anchor plate 120 .

[0043] In the present invention, since the support bodies of different heights are arranged at intervals, different support parts can be provided between the upper anchor plate and the lower anchor plate, and the assembly tooling formed is not a plane of equal height, but a height designed in a step-like manner to form assembly surfaces of different heights. Therefore, when supporting, the upper anchor plate and the lower anchor plate can be supported separately. During the assembly process, the heavier upper anchor plate and the lower anchor plate have their own support points respectively to ensure the safety of assembly. On the other hand, since there are two heights of support bodies, the height difference of the support bodies can be utilized to complete the suspension of the upper anchor plate during lifting, and in conjunction with the support seat 300 of fixed height, the height difference control and assembly of the upper and lower anchor plates are realized, ensuring the precise control of the height difference during assembly. At the same time, the method is simple and the cost is low.

[0044] In the present invention, before assembly, the height difference is directly controlled by using the support body. Compared with adjusting the height difference during assembly, not only is there no need to consider the safety problems caused by weighing, but also the cost is low and the construction speed is fast. The direct assembly of anchor plates of different heights can be achieved in one step, which greatly facilitates on-site construction.

[0045] Furthermore, the assembly tool 200 also includes a lower filling frame 250 near the lower anchor plate 120 and an upper filling frame 240 near the upper anchor plate 110, and an inner support assembly 230 is provided in both the upper filling frame 240 and the lower filling frame 250. In this embodiment, the purpose of providing a multi-layer filling frame is to provide a higher assembly tool, thereby providing a basis for suspension and support, and the more layers, the greater the support strength. In this embodiment, an inner support assembly 230 is also provided, so that fillers are provided in the support frame to avoid excessive hollowing and other unbalanced strength.

[0046] In this embodiment, the upper filling frame 240 and the lower filling frame 250 form a central symmetrical structure with the inner support assembly 230, and the inner support assembly 230 is radially arranged in the upper and lower filling frames. In this embodiment, the radial shape extends from the center position toward the edge, which is more suitable for forming a closed cavity structure, such as a ring-shaped bracket structure, to improve the strength of the assembly tool during use.

[0047] In order to achieve more comprehensive support, the assembly tool 200 is a central symmetrical structure, and the filling frame is a central symmetrical structure that is symmetrical with the assembly tool 200. In this embodiment, the assembly tool 200 can be an octagonal structure, and then the filling frame is an octagonal structure. At this time, no matter how it is rotated, it is a symmetrical structure, and the stability is good. Further, the inner support component adopts a cross-shaped structure, which makes the assembly tool have multiple connections from the center to the edge. At the same time, the cross-shaped structure makes the connection direction multi-directional, but not dense, to ensure the support effect.

[0048] Furthermore, an inner support component of a cross-shaped structure is also added to the lower layer of the assembly tooling to improve the overall assembly strength. Specifically, the cross-shaped structure is welded in the filling frame. Especially for higher structures, multiple layers of filling frames are provided, and each layer of the filling frame is provided with the cross-shaped structure. In this embodiment, the cross-shaped structure forms an octagon. During use, the octagonal assembly bracket ensures the safety of the assembly process and reduces the diagonal support process.

[0049] In this embodiment, since the lower anchor plate 120 is assembled later, temporary support is required, and thus a support seat 300 is further included. The support seat 300 is provided with a support portion 310 for temporary support of the lower anchor plate 120 .

[0050] In order to adjust the support position at any time, there are several support seats 300, and the several support seats 300 are arranged between the first support body 210 and the second support body 220, and the movement is used to achieve the avoidance of the upper anchor plate 110 during the hoisting and the assembly of the lower anchor plate 120.

[0051] In actual use, before and after the lower anchor plate 110 is hoisted, the lower anchor plate 120 is located at its bottom. It is necessary to consider the movement of the screw, etc., so that there is an avoidance space between it and the first support body and the second support body, etc., and in subsequent support, it is necessary to form the same support space as the upper anchor plate, so several groups of supports are cleverly designed, each group of supports includes a first support body, a second support body and a support seat with different heights, and the height between the three gradually becomes lower, but from a top view, after several support groups are connected, a circular trajectory matching the upper and lower anchor plates is formed.

[0052] In order to achieve temporary and safe support for the anchor plate, U-shaped shelving grooves are formed on the tops of the first support body 210 and the second support body 220. In this embodiment, specifically during assembly, when the upper anchor plate 110 and the screw rod 130 are assembled, the cross brace in the hanger fixture 400 is placed in the U-shaped shelving groove of the first support body 210, and when the screw rod 130 and the lower anchor plate 120 are assembled, the hanger cross brace is placed in the U-shaped shelving groove of the first support body 210; when the screw rod 130 and the lower anchor plate 120 are assembled, the hanger cross brace is placed in the U-shaped shelving groove of the first support body 210; when finally falling and rotating, the upper anchor plate 110 is placed in the U-shaped shelving groove of the second support body 220. The present invention utilizes a staggered structure to match the height and different positions of the anchor plate and the support part of the support frame, and then during rotation, the relative position of the support body, the upper anchor plate and the lifting fixture can be adjusted, and then by rotation, the cross and the upper anchor plate are located in the first support body and the second support body at different times, respectively, and the upper anchor plate is suspended and supported, which provides a basis for the assembly of the screw rod, etc.

[0053] See attached Figure 5 As shown, the present invention also discloses a method for assembling an offshore wind power bolt assembly, comprising the following steps:

[0054] Installation of the lower anchor plate: adjust the positions of several support seats to form a supporting space matching the lower anchor plate, and place the lower anchor plate stably in the supporting space by leveling.

[0055] The first support body 210 is used to support the lifting tool 400, so that the upper anchor plate 110 is temporarily suspended on the assembling tool 200;

[0056] In this step, the upper anchor plate 110 is temporarily suspended on the assembling tool 200 by using a lifting device to lift the lifting tool 400 onto the first support body 210 and fix it in place through a number of U-shaped resting grooves on the first support body 210 .

[0057] Pass the screw rod with the second nut and the third nut 121 through the bottom of the upper anchor plate 110 from bottom to top, and complete the assembly of the upper anchor plate 110 and the screw rod 130;

[0058] On the upper surface of the upper anchor plate 110 , a first nut 111 for fixing the upper anchor plate 110 is assembled;

[0059] The lifting tool 400 on the upper anchor plate 110 is lifted to drive the upper anchor plate 110 with the screw rod 130 to be lifted and rotated circumferentially to the set position, so that the screw rod 130 moves downward, and the upper anchor plate 110 is supported by the second support body 220. At the same time, the screw rod 130 is inserted into the lower anchor plate 120 located on the support seat 300, and the fourth nut is assembled at the bottom of the lower anchor plate 120 to form a bolt assembly.

[0060] Specifically, the upper anchor plate 110 with the screw 130 rotates circumferentially to the set position as follows: a number of the first support bodies 210 and the second support bodies 220 form a circular trajectory, and the lifting tool 200 is rotated so that it rotates from the first support body 210 until the upper anchor plate 110 corresponds to the second support body 220 that is closest to the first support body 210.

[0061] In this embodiment, rotation is utilized to transform the later support from the support of the lifting tooling to the upper anchor plate, and the lifting tooling can be lifted and rotated by a lifting device, thereby realizing the rotation support of the upper anchor plate with the screw.

[0062] Specifically, the screw rod 130 is inserted into the lower anchor plate 120 located on the support seat 300. Specifically, along the circumferential track, a plurality of the support seats 300 are arranged between the first support body 210 and the second support body 220, and the screw rod 130 falls into the lower anchor plate 120 located on the support seat 300 when moving downward. This rotation finally realizes the fixed support of the upper and lower anchor plates at the same position without adjusting the lower anchor plate.

[0063] In the traditional assembly method, nuts are used to follow the threads from top to bottom, and four long threads are used to support the upper and lower anchor plates: the upper anchor plate is hoisted in the air by a crane, and four screws are manually inserted into the anchor holes of the upper anchor plate. The screws are manually supported and inserted into the anchor holes of the lower anchor plate. In this way, the four screws support the upper and lower anchor plates, and then the remaining anchors are installed on the upper anchor plate. By tightening the nuts of the four screws, the screws of the upper anchor plate are lowered through the nuts to penetrate into the screw holes of the lower anchor plate. During the whole process, the screws need to be supported manually, and the nuts need to be manually adjusted to adjust the height difference between the upper and lower anchor plates. The workload is large, and there is a certain degree of safety. Other screws are also needed to assist in assembly.

[0064] In the present invention, by utilizing the added assembly tooling, during the entire assembly process, there is no need for the coordination of other screws and nuts, etc., and only the assembly sequence of the nuts needs to be adjusted to ensure the entire assembly. At the same time, in conjunction with the M-shaped internal support assembly, the frequent use of lifting equipment is reduced, and each process is in a static installation, thereby ensuring the installation quality and safety.

[0065] In actual use, the assembling tool 200 is provided with an inner support assembly 230 for filling the inner space of the assembling tool 200, and the inner support assembly 230 is welded to the first support body 110 and the second support body 220. In this embodiment, the inner support assembly 230 is used to form a filling, so that the interior of the assembling tool 200 is connected, and the overall strength is increased.

[0066] The assembly of the upper anchor plate 110 and the screw rod 130 also includes exposing the screw rod 130 , specifically, after the screw rod 130 passes through the upper anchor plate 110 from bottom to top, obtaining the exposed length of the screw rod 130 and adjusting it to meet the set requirements.

[0067] During use, the lower anchor plate 120 is also supported, specifically, a support seat 300 having the same number of first support bodies 110 and second support bodies 220 is provided, and the lower anchor plate 120 is fixedly provided on the support seat 300.

[0068] Furthermore, it also includes the assembly of a supporting seat 300, wherein there are a plurality of supporting seats 300, and the plurality of supporting seats 300 are formed with a placing surface for placing the lower anchor plate 120.

[0069] In this embodiment, the support seat has two purposes: on the one hand, the lower anchor plate needs to be placed on the support seat first, so that the screw can be inserted; on the other hand, the support seat can be leveled before the anchor plate is placed. In this embodiment, 8 support seats are set, and they are evenly placed in the middle of the assembly frame column 1 and column 2. Before the lower anchor plate is placed, the 8 support seats need to be leveled to meet the 2mm accuracy requirement. In this way, the lower anchor plate can be placed on it to meet the 2mm accuracy requirement.

[0070] In the present invention, the core steps are as follows:

[0071] The M-shaped structure is mainly used for reinforcement and stability, and the key is the design of high and low columns. In fact, this system is composed of the hanger tooling and high and low columns.

[0072] (1) Since the bolt assembly consists of upper and lower anchor plates and bolts, the bolts are inserted into the anchor plate holes of the upper and lower anchor plates. The upper and lower anchor plates are restricted by nuts and cannot be installed at will. They must be installed in a certain order. Since the thread length on the screw is customized, the figure shows that the nut at the upper anchor plate is non-threaded and wrapped with PVC sleeve and heat shrink tube. Both ends are threaded for installing nuts. The bolts connect and fix the upper and lower anchor plates through the upper and lower nuts.

[0073] (2) The entire installation sequence is: the second nut and the third nut are screwed onto the screw rod, the upper and lower anchor plates are hoisted into the air through a special hanger, the lower anchor plate is placed on the auxiliary bracket, and the upper anchor plate is placed on the assembly system through the hanger.

[0074] (3) Since the upper anchor plate cannot be suspended in the air without fixing after being lifted by the lifting tool, a U-shaped groove is set on the four high columns, and the cross brace can be placed in the U-shaped groove. In this way, the upper anchor plate is suspended in the air by the lifting tool cross brace and the four high columns, and the upper and lower anchor plates are all placed on the periphery of the columns. The staff can stand below and pass the screw with the nut installed from bottom to top. In this way, the more than 3m long screw is passed into the screw hole of the upper anchor plate. The nut is screwed on the exposed screw of the upper anchor plate, and the screw is suspended under the upper anchor plate.

[0075] (4) After the upper anchor plate and the screw are connected, the screw needs to be passed through the hole of the lower anchor plate. At this time, the upper anchor plate and the screw need to be moved as a whole and passed through the hole of the lower anchor plate. Because the installed screw is suspended in the air, the bottom is some distance away from the lower anchor plate. The upper anchor plate and the screw are lifted as a whole by the lifting tool and rotated 45° to pass the screw through the hole of the lower anchor plate. At the same time, the bracket is placed in the "U"-shaped shelf groove of the four low columns.

[0076] (5) The overall load of the upper anchor plate and the screw is distributed on the "U"-shaped mounting groove of the low column. The third nut of the lower anchor plate will not be subjected to stress, and the fourth nut is easy to install.

[0077] The prior art assembling method is to use nuts to follow the threads from top to bottom, and use 4 long threads to support the upper and lower anchor plates: the upper anchor plate is hoisted in the air by a crane, and 4 screws are manually inserted into the anchor holes of the upper anchor plate, and the screws are manually supported and inserted into the anchor holes of the lower anchor plate. In this way, the 4 screws support the upper and lower anchor plates, and then the remaining anchors are installed on the upper anchor plate. In this construction method, the screws need to be adjusted through the support and then adjusted with the anchor plate, etc., while in the present invention, there is no need to adjust the screws, and the upper anchor plate can be directly controlled, which is safe, reliable and efficient.

[0078] The scheme of the present invention is put into practical application, and the specific process is as follows:

[0079] First, assemble the tooling design

[0080] In order to meet the onshore assembly of bolt assemblies, a set of onshore assembly tooling for offshore wind power anchor bolt assemblies was designed through research and design, considering that the weight and size of the anchor plate and screw are large, the assembly process is complicated and the technical requirements are high. The tooling is used in conjunction with the hanger, and the specific design content is:

[0081] First, make preparations before construction, including the preparation of materials and design drawings;

[0082] Design the assembly tooling. In this embodiment, the assembly tooling consists of 4 high steel columns, 4 low steel columns and two layers of "M"-shaped horizontal internal supports. The 4 high columns and the 4 low columns are evenly spaced and arranged on the circular track line. The 4 high columns serve as support for the upper anchor plate when the screws are inserted; the 4 low columns serve as support for the lower anchor plate when the screws are inserted.

[0083] The bottoms of the 8 steel columns are all on the same plane, standing upright on the horizontal hard land. The height difference between the high and low columns is controlled according to the height difference when the upper and lower anchor plates pass through the screws. The tops of the 8 columns are all set into "U"-shaped grooves to place the hanger cross braces.

[0084] The "M"-shaped internal support is mainly used to connect 8 high and low columns into a whole, with two layers above and below, all fixed by welding.

[0085] Secondly, assembly construction technology

[0086] Onshore assembly needs to be assembled on a hardened land surface to meet the requirements of 50t crane lifting and storage. The main technical contents of the specific assembly construction are as follows:

[0087] (1) Installation of lower anchor plate

[0088] Eight support seats are evenly distributed on the circumference of the lower anchor plate according to its annular size on land. The support seats are composed of vertical steel plates and stiffening plates. The support seats need to be leveled in advance to meet the horizontality requirements. The vertical steel plates are evenly supported between the screw holes and holes of the lower anchor plate. The lower anchor plate is lifted to the eight support seats by a 50t truck crane using a hanger.

[0089] In this embodiment, before the lower anchor plate is installed, it is necessary to assemble the lower anchor plate and level the bracket, that is, the lower anchor plate body is placed stably through the support seat 300 to provide a basis for lifting.

[0090] (2) Installation of upper anchor plate

[0091] Lift the assembly tooling to the center of the lower anchor plate, and then use the hanger to lift the upper anchor plate to the high column of the assembly tooling, and place it in the "U"-shaped groove of the column through a cross brace to hang the upper anchor plate in the air.

[0092] (3) Screw assembly

[0093] The pre-assembled positioning support screws should be passed through the holes of the upper anchor plate from bottom to top, and the remaining non-support screws should be installed in the same way. When installing the screws, the exposed length of the screws should be controlled according to the requirements of the design drawings.

[0094] (4) Overall assembly

[0095] After the screw rod and the upper anchor plate are assembled, the upper anchor plate and the screw rod need to be installed into the bolt hole of the lower anchor plate. The upper part is hoisted by the crane with a hanger, rotated 45° and inserted into the hole of the lower anchor plate. At the same time, the bracket is placed in the "U"-shaped placement groove of the four low columns. After the overall assembly is completed, the horizontality of the upper anchor plate is measured and adjusted until it meets the design requirements.

[0096] In this embodiment, when the entire screw is assembled, the screw, nut and gasket are re-inspected to ensure the quality; after the nut, gasket and matching pipe on the screw are constructed, the anchor plate on the semi-finished screw is perforated, and then the anchor plate under the screw is perforated, and finally the matching nut and gasket are installed, the anchor bolt combination key is leveled as a whole, the upper anchor plate is reinforced and re-measured for level, and finally acceptance is carried out.

[0097] (5) Temporary reinforcement

[0098] In order to ensure that the bolt assembly does not deform as a whole during the lifting and installation process, temporary reinforcement measures are required after adjusting the levelness. This is done by using [14 channel steel for internal support welding support. After welding the support, the levelness is inspected again. Installation can only be carried out after meeting the requirements.

[0099] In the present invention, due to the addition of assembly tools and the inner support components of the M-shaped structure, the entire assembly sequence and progress are greatly improved, the technical requirements are low, the entire construction method is highly operable, and can be extended to various projects for use. The assembly equipment is easy to obtain, and the four support screws have the risk of deformation and displacement. This assembly system uses an octagonal assembly bracket as a load-bearing structure, and the structure is firm. In this embodiment, during lifting, the 16 screw holes of the cross hanger are used for force. Compared with the four screw holes, the force-bearing area is large, which reduces the deformation of the anchor plate. The horizontality of the anchor assembly is more effectively guaranteed to be 2mm.

[0100] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0101] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0102] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for assembling an offshore wind power bolt assembly, characterized in that: The bolt assembly comprises an upper anchor plate and a lower anchor plate, the upper anchor plate and the lower anchor plate are assembled by screw rods, the upper and lower sides of the upper anchor plate are respectively provided with a first nut and a second nut, and the upper and lower sides of the lower anchor plate are provided with a third nut and a fourth nut; a lifting tool is provided along the edge of the upper anchor plate for lifting the upper anchor plate; An assembling tool, the assembling tool comprising a first support body and a second support body supporting the lifting tool and the upper anchor plate, the first support body and the second support body being arranged at an interval; A support seat is provided at the bottom of the assembly tooling for supporting the lower anchor plate; The specific assembly method includes the following steps: The first support body is used to support the lifting tooling, so that the upper anchor plate is temporarily suspended on the assembly tooling; Pass the screw rod with the second nut and the third nut through the bottom of the upper anchor plate from bottom to top, and complete the assembly of the upper anchor plate and the screw rod; On the upper surface of the upper anchor plate, assemble a first nut to fix the upper anchor plate; Lift the lifting tool on the upper anchor plate, drive the upper anchor plate with the screw to lift and rotate it circumferentially to a set position, so that the screw moves downward, and the lifting tool is carried by the second support body. At the same time, the screw is inserted into the lower anchor plate located on the support seat, and the fourth nut is assembled at the bottom of the lower anchor plate to form a bolt assembly; 8 steel columns form the support, and the bottoms of the 8 steel columns are all on the same plane, standing upright on the horizontal hard land. The height difference between the high and low columns is controlled according to the height difference when the upper and lower anchor plates are inserted into the screw rods. The tops of the 8 columns are all set into "U"-shaped grooves to place the cross braces of the lifting tooling. Among the 8 steel columns, 4 high columns and 4 low columns are evenly spaced and arranged on the circular trajectory line; the 4 high columns serve as the support when the upper anchor plate is inserted into the screw rod; the 4 low columns serve as the support when the lower anchor plate is inserted into the screw rod; The upper anchor plate is temporarily suspended on the assembly tooling by using a lifting device to lift the assembly tooling onto the first support body, and is fixed and limited by a number of U-shaped resting grooves on the first support body.

2. The offshore wind power bolt assembly assembly method according to claim 1, characterized in that: The assembly tool comprises a lower filling frame close to the lower anchor plate and an upper filling frame close to the upper anchor plate, and inner support components are arranged in the upper filling frame and the lower filling frame.

3. The offshore wind power bolt assembly assembly method according to claim 2 is characterized in that: The upper filling frame and the lower filling frame form a central symmetrical structure cocentric with the inner support assembly, and the inner support assembly is radially arranged in the upper and lower filling frames respectively.

4. The offshore wind power bolt assembly assembly method according to claim 1, characterized in that: There are a plurality of support seats, which are arranged between the first support body and the second support body, and can achieve avoidance in the hoisting of the upper anchor plate and assembly of the lower anchor plate by moving.

5. The offshore wind power bolt assembly assembly method according to claim 1, characterized in that: The tops of the first supporting body and the second supporting body are both formed with U-shaped shelf grooves.

6. According to claim 1, a method for assembling offshore wind power bolt assemblies is characterized in that: It also includes the installation of the lower anchor plate, which is specifically: adjusting the positions of a plurality of support seats to form a support space matching the lower anchor plate, and placing the lower anchor plate stably in the support space by leveling.

7. According to claim 1, a method for assembling offshore wind power bolt assemblies is characterized in that: The upper anchor plate with a screw is rotated circumferentially to a set position as follows: a plurality of the first support bodies and the second support bodies form a circular trajectory, and the lifting tool is rotated so that it rotates from the first support body until the upper anchor plate corresponds to the second support body that is closest to the first support body.

8. An offshore wind power bolt assembly assembly method according to claim 7, characterized in that: The screw rod is inserted into the lower anchor plate on the support seat. Specifically, a plurality of support seats are arranged between the first support body and the second support body along the circumferential track, and the screw rod falls into the lower anchor plate on the support seat when moving downward.

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