Method and device for pre-burying anchor plate at bottom of wind power tower

Abstract

The invention relates to the technical field of wind generating sets, in particular to a wind power tower bottom anchor plate pre-embedding method and device. Comprising the steps that a lower anchor plate is hoisted to the position not smaller than 300 mm above an embedded part, a screw hole in the lower anchor plate and a lower anchor plate supporting bolt correspondingly penetrate into the lower anchor plate, a nut is placed at the upper end and the lower end of the lower anchor plate respectively, a gasket is additionally arranged on the nut at the lower end of the lower anchor plate, and after the embedded part and the supporting bolt are vertically aligned, the lower anchor plate is fixed to the lower anchor plate. The lower anchor plate is placed on the embedded part; a supporting bolt used for supporting the lower anchor plate is welded to the corresponding embedded part, and the height of a welded leg is not smaller than 6 mm; and the supporting bolts are adjusted to reach the preset standard height, and the levelness of the lower anchor plate is not larger than 3 mm. According to the method, parameters of all links in the whole pre-embedding process and the using number of bolts are controlled, so that the stress concentration phenomenon is fully avoided, and the engineering quality is guaranteed.

Description

Background Art

[0002] In onshore wind farm projects, there are two common ways to connect wind turbine towers to foundations: foundation rings (also known as pre-buried towers) and anchor cages. Foundation rings were widely used in early wind farm construction. However, with the development of the wind power industry, the requirements for wind turbine foundations have continued to increase, and the economic applicability of foundation rings has deteriorated. Compared with foundation ring connections, anchor cages run through the entire wind turbine foundation, and by applying prestress, the integrity, durability, and fatigue resistance of the wind turbine foundation are significantly improved.

[0003] However, in the prior art, in order to avoid stress concentration when the foundation ring is connected, most of the wind turbine foundations and towers are connected by anchor bolts. Since manual construction cannot fully guarantee accuracy, it will lead to uneven force on the part above the lower anchor plate of the anchor during the actual anchor plate pre-embedding process. Since prestress is applied to the anchor bolts, the concrete foundation is always under pressure. If the pre-embedding process is not performed accurately, the final quality will be affected. Therefore, how to provide a method and device for pre-embedding the anchor plate at the bottom of the wind turbine tower is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a method and device for pre-embedding anchor plates at the bottom of a wind power tower. The present invention fully avoids stress concentration and ensures engineering quality by controlling parameters of each link in the whole pre-embedding process and the number of bolts used.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A method for pre-embedding an anchor plate at the bottom of a wind power tower, characterized by comprising:

[0007] Lift the lower anchor plate to a position not less than 300mm above the embedded part, insert the screw holes on the lower anchor plate and the lower anchor plate support bolts respectively, place a nut on the upper and lower ends of the lower anchor plate, and add a gasket to the nut at the lower end of the lower anchor plate. When the embedded part is vertically aligned with the support bolt, place the lower anchor plate on the embedded part;

[0008] Welding the support bolts used to support the lower anchor plate to the corresponding embedded parts, with the height of the weld leg being no less than 6 mm;

[0009] The support bolts are adjusted to a preset standard height, and the horizontality of the lower anchor plate is not greater than 3 mm.

[0010] In some embodiments of the present application, it also includes:

[0011] Lift the upper anchor plate, and evenly and symmetrically insert positioning anchor bolts through the inner and outer bolt holes of the upper anchor plate, insert the positioning anchor bolts into the upper anchor plate, and install temporary steel nuts on the upper anchor plate;

[0012] A half nut is arranged at the lower end of the positioning anchor bolt, and a PVC sleeve is inserted into the positioning anchor bolt, a heat shrink tube is sleeved on the PVC sleeve, and a nylon adjustment nut is arranged at the upper end of the positioning anchor bolt;

[0013] Lift the upper anchor plate and the positioning anchor bolt, and move the upper anchor plate and the positioning anchor bolt to the top of the lower anchor plate, insert the positioning anchor bolt and the bolt holes of the lower anchor plate into the corresponding holes, and tighten the nut under the lower anchor plate. The tightening torque of the nut is 300N*m.

[0014] In some embodiments of the present application, it also includes:

[0015] After the positioning anchor bolts are installed, install the common anchor bolts in diagonal order, insert the upper anchor plate at the upper end of the common anchor bolts in turn, and insert the lower anchor plate at the end where the half nut has been installed. The tightening torque of the half nut is 300N*m.

[0016] Set stakes at every 90° on the outside of the fan, connect the upper anchor plate to the stakes, adjust the upper anchor plate and the lower anchor plate until they are concentric, when the upper anchor plate and the lower anchor plate are concentric, adjust the level of the upper anchor plate until it reaches a preset standard level, and the level of the upper anchor plate is not greater than 1.5mm, heat the heat shrink tube at the port of the PVC sleeve to shrink it and seal the gap between the PVC sleeve and the anchor bolt.

[0017] In some embodiments of the present application, it also includes:

[0018] A plurality of steel bars are inserted into the anchor assembly, and one end of the steel bar is welded to the upper anchor plate, and the other end of the steel bar is welded to the embedded part, and the levelness of the upper anchor plate is detected. When the levelness of the upper anchor plate reaches the preset standard levelness, concrete is poured.

[0019] In some embodiments of the present application, it also includes:

[0020] Detecting the diameter d of the wind turbine tower and the prestress F of the anchor bolts, and determining the number of anchor bolts to be used according to the diameter d of the wind turbine tower and the prestress F of the anchor bolts;

[0021] A preset wind turbine tower diameter matrix T0 and a preset anchor bolt usage number matrix A are preset. For the preset anchor bolt usage number matrix A, A(A1, A2, A3, A4) is set, wherein A1 is the first preset anchor bolt usage number, A2 is the second preset anchor bolt usage number, A3 is the third preset anchor bolt usage number, A4 is the fourth preset anchor bolt usage number, and A1<A2<A3<A4;

[0022] For the preset wind turbine tower diameter matrix T0, set T0(T01, T02, T03, T04), wherein T01 is the first preset wind turbine tower diameter, T02 is the second preset wind turbine tower diameter, T03 is the third preset wind turbine tower diameter, T04 is the fourth preset wind turbine tower diameter, and T01<T02<T03<T04;

[0023] According to the relationship between d and the preset wind turbine tower diameter matrix T0, a corresponding number of anchor bolts to be used is selected as the determined number of anchor bolts to be used;

[0024] When d<T01, the first preset anchor bolt usage quantity A1 is selected as the determined usage quantity of the anchor bolts;

[0025] When T01≤d<T02, the second preset anchor bolt usage quantity A2 is selected as the determined usage quantity of the anchor bolts;

[0026] When T02≤d<T03, the third preset anchor bolt usage quantity A3 is selected as the determined anchor bolt usage quantity;

[0027] When T03≤d<T04, the fourth preset anchor bolt usage quantity A4 is selected as the determined anchor bolt usage quantity;

[0028] A preset anchor bolt prestress matrix R0 and a preset anchor bolt usage quantity correction coefficient matrix B are preset. For the preset anchor bolt usage quantity correction coefficient matrix B, B(B1, B2, B3, B4) is set, where B1 is the first preset anchor bolt usage quantity correction coefficient, B2 is the second preset anchor bolt usage quantity correction coefficient, B3 is the third preset anchor bolt usage quantity correction coefficient, B4 is the fourth preset anchor bolt usage quantity correction coefficient, and 1<B1<B2<B3<B4<1.5;

[0029] For the preset anchor bolt prestress matrix R0, set R0(R01, R02, R03, R04), wherein R01 is the first preset anchor bolt prestress, R02 is the second preset anchor bolt prestress, R03 is the third preset anchor bolt prestress, R04 is the fourth preset anchor bolt prestress, and R01<R02<R03<R04;

[0030] According to the relationship between F and the preset anchor bolt prestress matrix R0, a corresponding anchor bolt usage correction coefficient is selected to correct the preset anchor bolt usage quantity, and the corrected anchor bolt usage quantity is rounded up;

[0031] When F<R01, the fourth preset anchor bolt usage correction coefficient B4 is selected to correct the first preset anchor bolt usage quantity A1, and the corrected anchor bolt usage quantity is A1*B4;

[0032] When R01≤F<R02, the third preset anchor bolt usage correction coefficient B3 is selected to correct the second preset anchor bolt usage quantity A2, and the corrected anchor bolt usage quantity is A2*B3;

[0033] When R02≤F<R03, the second preset anchor bolt usage correction coefficient B2 is selected to correct the third preset anchor bolt usage quantity A3, and the corrected anchor bolt usage quantity is A3*B2;

[0034] When R03≤F<R04, the first preset anchor bolt usage quantity correction coefficient B1 is selected to correct the fourth preset anchor bolt usage quantity A4, and the corrected anchor bolt usage quantity is A4*B1.

[0035] In order to achieve the above-mentioned object, the present invention also provides a wind turbine tower bottom anchor plate pre-embedding device, which is applied to the wind turbine tower bottom anchor plate pre-embedding method, comprising:

[0036] A control unit is used to lift the lower anchor plate to a position not less than 300 mm above the embedded part, insert the screw holes on the lower anchor plate and the lower anchor plate support bolts respectively, place a nut at the upper end and the lower end of the lower anchor plate, and add a gasket to the nut at the lower end of the lower anchor plate. When the embedded part is vertically aligned with the support bolt, the lower anchor plate is placed on the embedded part;

[0037] A welding unit, used for welding the supporting bolts for supporting the lower anchor plate to the corresponding embedded parts, and the height of the welding leg is not less than 6 mm;

[0038] The adjusting unit is used to adjust the supporting bolt to a preset standard height, and the horizontality of the lower anchor plate is not greater than 3 mm.

[0039] In some embodiments of the present application, the control unit is further used to hoist the upper anchor plate, and evenly and symmetrically penetrate the inner and outer bolt holes of the upper anchor plate with positioning anchor bolts, penetrate the positioning anchor bolts into the upper anchor plate, and set temporary steel nuts on the upper anchor plate;

[0040] A setting unit, used for setting a half nut at the lower end of the positioning anchor bolt, inserting a PVC sleeve into the positioning anchor bolt, sleeve a heat shrink tube on the PVC sleeve, and setting a nylon adjusting nut at the upper end of the positioning anchor bolt;

[0041] The control unit is also used to lift the upper anchor plate and the positioning anchor bolt, and move the upper anchor plate and the positioning anchor bolt to the top of the lower anchor plate, insert the positioning anchor bolt and the bolt holes of the lower anchor plate into the corresponding holes, and tighten the nut under the lower anchor plate, and the tightening torque of the nut is 300N*m.

[0042] In some embodiments of the present application, the control unit is further used to install the common anchor bolts in a diagonal order after the positioning anchor bolts are installed, and sequentially penetrate the upper anchor plate at the upper end of the common anchor bolts, and penetrate the lower anchor plate at the end where the half nut has been installed, and the tightening torque of the half nut is 300N*m;

[0043] The control unit is also used to set stakes at every 90° position on the outside of the fan, connect the upper anchor plate with the stakes, adjust the upper anchor plate and the lower anchor plate until they are concentric, and when the upper anchor plate and the lower anchor plate are concentric, adjust the level of the upper anchor plate until it reaches a preset standard level, and the level of the upper anchor plate is not greater than 1.5mm, heat the heat shrink tube at the port of the PVC sleeve to shrink it and seal the gap between the PVC sleeve and the anchor bolt.

[0044] In some embodiments of the present application, the control unit is also used to pass a plurality of steel bars into the anchor assembly, and one end of the steel bar is welded to the upper anchor plate, and the other end of the steel bar is welded to the embedded part, and the horizontality of the upper anchor plate is detected. When the horizontality of the upper anchor plate reaches the preset standard horizontality, concrete is poured.

[0045] In some embodiments of the present application, the control unit is further used to detect the diameter d of the wind turbine tower and the prestress F of the anchor bolt, and determine the number of anchor bolts to be used according to the diameter d of the wind turbine tower and the prestress F of the anchor bolt;

[0046] The control unit is pre-set with a preset wind turbine tower diameter matrix T0 and a preset anchor bolt usage number matrix A. For the preset anchor bolt usage number matrix A, A(A1, A2, A3, A4) is set, wherein A1 is the first preset anchor bolt usage number, A2 is the second preset anchor bolt usage number, A3 is the third preset anchor bolt usage number, A4 is the fourth preset anchor bolt usage number, and A1<A2<A3<A4;

[0047] For the preset wind turbine tower diameter matrix T0, set T0(T01, T02, T03, T04), wherein T01 is the first preset wind turbine tower diameter, T02 is the second preset wind turbine tower diameter, T03 is the third preset wind turbine tower diameter, T04 is the fourth preset wind turbine tower diameter, and T01<T02<T03<T04;

[0048] The control unit is further used to select a corresponding number of anchor bolts to be used as the determined number of anchor bolts to be used according to the relationship between d and the preset wind turbine tower diameter matrix T0;

[0049] When d<T01, the first preset anchor bolt usage quantity A1 is selected as the determined usage quantity of the anchor bolts;

[0050] When T01≤d<T02, the second preset anchor bolt usage quantity A2 is selected as the determined usage quantity of the anchor bolts;

[0051] When T02≤d<T03, the third preset anchor bolt usage quantity A3 is selected as the determined anchor bolt usage quantity;

[0052] When T03≤d<T04, the fourth preset anchor bolt usage quantity A4 is selected as the determined anchor bolt usage quantity;

[0053] A preset anchor bolt prestress matrix R0 and a preset anchor bolt usage quantity correction coefficient matrix B are preset. For the preset anchor bolt usage quantity correction coefficient matrix B, B(B1, B2, B3, B4) is set, where B1 is the first preset anchor bolt usage quantity correction coefficient, B2 is the second preset anchor bolt usage quantity correction coefficient, B3 is the third preset anchor bolt usage quantity correction coefficient, B4 is the fourth preset anchor bolt usage quantity correction coefficient, and 1<B1<B2<B3<B4<1.5;

[0054] For the preset anchor bolt prestress matrix R0, set R0(R01, R02, R03, R04), wherein R01 is the first preset anchor bolt prestress, R02 is the second preset anchor bolt prestress, R03 is the third preset anchor bolt prestress, R04 is the fourth preset anchor bolt prestress, and R01<R02<R03<R04;

[0055] According to the relationship between F and the preset anchor bolt prestress matrix R0, a corresponding anchor bolt usage correction coefficient is selected to correct the preset anchor bolt usage quantity, and the corrected anchor bolt usage quantity is rounded up;

[0056] When F<R01, the fourth preset anchor bolt usage correction coefficient B4 is selected to correct the first preset anchor bolt usage quantity A1, and the corrected anchor bolt usage quantity is A1*B4;

[0057] When R01≤F<R02, the third preset anchor bolt usage correction coefficient B3 is selected to correct the second preset anchor bolt usage quantity A2, and the corrected anchor bolt usage quantity is A2*B3;

[0058] When R02≤F<R03, the second preset anchor bolt usage correction coefficient B2 is selected to correct the third preset anchor bolt usage quantity A3, and the corrected anchor bolt usage quantity is A3*B2;

[0059] When R03≤F<R04, the first preset anchor bolt usage quantity correction coefficient B1 is selected to correct the fourth preset anchor bolt usage quantity A4, and the corrected anchor bolt usage quantity is A4*B1.

[0060] The present invention provides a method and device for pre-embedding anchor plates at the bottom of a wind power tower. Compared with the prior art, the present invention has the following beneficial effects:

[0061] The anchor cage adopted in the present invention has the advantages of simple process and fast installation speed. In view of its high precision requirement, accurate parameter control is performed during the installation and assembly process of the anchor assembly to improve the installation accuracy of each installation step, improve the overall installation quality, and fully ensure the safety and reliability of the infrastructure. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 is a flow chart of a method for pre-embedding anchor plates at the bottom of a wind power tower according to an embodiment of the present invention;

[0063] Figure 2 It is a functional block diagram of the anchor plate pre-embedded device at the bottom of the wind turbine tower in an embodiment of the present invention. DETAILED DESCRIPTION

[0064] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0065] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0066] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0067] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the inner sides of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0068] See also Figure 1 As shown, the disclosed embodiment of the present invention provides a method for pre-embedding an anchor plate at the bottom of a wind power tower, which is characterized by comprising:

[0069] Lift the lower anchor plate to a position not less than 300mm above the embedded part, insert the screw holes on the lower anchor plate and the support bolts of the lower anchor plate respectively, put a nut on the upper and lower ends of the lower anchor plate, and add a gasket to the nut at the lower end of the lower anchor plate. When the embedded part is vertically aligned with the support bolt, place the lower anchor plate on the embedded part;

[0070] Weld the supporting bolts used to support the lower anchor plate to the corresponding embedded parts, and the height of the weld leg should not be less than 6mm;

[0071] Adjust the supporting bolts to the preset standard height, and the horizontality of the lower anchor plate shall not exceed 3mm.

[0072] In a specific embodiment of the present application, it also includes:

[0073] Lift the upper anchor plate, and evenly and symmetrically insert the positioning anchor bolts through the inner and outer bolt holes of the upper anchor plate, insert the positioning anchor bolts into the upper anchor plate, and install temporary steel nuts on the upper anchor plate;

[0074] A half nut is set at the lower end of the positioning anchor bolt, and the PVC sleeve is inserted into the positioning anchor bolt, the heat shrink tube is set on the PVC sleeve, and a nylon adjustment nut is set at the upper end of the positioning anchor bolt;

[0075] Lift the upper anchor plate and the positioning anchor bolts, and move them to the top of the lower anchor plate, insert the positioning anchor bolts and the bolt holes of the lower anchor plate into the corresponding holes, and tighten the nuts under the lower anchor plate. The tightening torque of the nuts is 300N*m.

[0076] In a specific embodiment of the present application, it also includes:

[0077] After the positioning anchor bolts are installed, install the common anchor bolts in diagonal order, insert the upper anchor plate at the upper end of the common anchor bolts in turn, and insert the lower anchor plate at the end where the half nut has been installed. The tightening torque of the half nut is 300N*m.

[0078] Set stakes at every 90° on the outside of the fan, connect the upper anchor plate to the stakes, adjust the upper anchor plate and the lower anchor plate until they are concentric. When the upper anchor plate and the lower anchor plate are concentric, adjust the levelness of the upper anchor plate until it reaches the preset standard level, and the levelness of the upper anchor plate is not greater than 1.5mm. Heat the heat shrink tube at the port of the PVC sleeve to shrink it and seal the gap between the PVC sleeve and the anchor bolt.

[0079] In a specific embodiment of the present application, it also includes:

[0080] A number of steel bars are inserted into the anchor assembly, and one end of the steel bar is welded to the upper anchor plate, and the other end of the steel bar is welded to the embedded part. The levelness of the upper anchor plate is detected, and when the levelness of the upper anchor plate reaches the preset standard levelness, concrete is poured.

[0081] In a specific embodiment of the present application, it also includes:

[0082] Detect the diameter d of the wind turbine tower and the prestress F of the anchor bolts, and determine the number of anchor bolts to be used based on the diameter d of the wind turbine tower and the prestress F of the anchor bolts;

[0083] A preset wind turbine tower diameter matrix T0 and a preset anchor bolt usage number matrix A are preset. For the preset anchor bolt usage number matrix A, A(A1, A2, A3, A4) is set, wherein A1 is the first preset anchor bolt usage number, A2 is the second preset anchor bolt usage number, A3 is the third preset anchor bolt usage number, A4 is the fourth preset anchor bolt usage number, and A1<A2<A3<A4;

[0084] For the preset wind turbine tower diameter matrix T0, set T0(T01, T02, T03, T04), where T01 is the first preset wind turbine tower diameter, T02 is the second preset wind turbine tower diameter, T03 is the third preset wind turbine tower diameter, T04 is the fourth preset wind turbine tower diameter, and T01<T02<T03<T04;

[0085] According to the relationship between d and the preset wind turbine tower diameter matrix T0, the corresponding number of anchor bolts to be used is selected as the determined number of anchor bolts to be used;

[0086] When d<T01, the first preset anchor bolt usage quantity A1 is selected as the determined anchor bolt usage quantity;

[0087] When T01≤d<T02, the second preset anchor bolt usage quantity A2 is selected as the determined anchor bolt usage quantity;

[0088] When T02≤d<T03, the third preset anchor bolt usage quantity A3 is selected as the determined anchor bolt usage quantity;

[0089] When T03≤d<T04, the fourth preset anchor bolt usage quantity A4 is selected as the determined anchor bolt usage quantity;

[0090] A preset anchor bolt prestress matrix R0 and a preset anchor bolt usage quantity correction coefficient matrix B are preset. For the preset anchor bolt usage quantity correction coefficient matrix B, B(B1, B2, B3, B4) is set, where B1 is the first preset anchor bolt usage quantity correction coefficient, B2 is the second preset anchor bolt usage quantity correction coefficient, B3 is the third preset anchor bolt usage quantity correction coefficient, B4 is the fourth preset anchor bolt usage quantity correction coefficient, and 1<B1<B2<B3<B4<1.5;

[0091] For the preset anchor bolt prestress matrix R0, set R0(R01, R02, R03, R04), where R01 is the first preset anchor bolt prestress, R02 is the second preset anchor bolt prestress, R03 is the third preset anchor bolt prestress, R04 is the fourth preset anchor bolt prestress, and R01<R02<R03<R04;

[0092] According to the relationship between F and the preset anchor bolt prestress matrix R0, a corresponding anchor bolt usage correction coefficient is selected to correct the preset anchor bolt usage quantity, and the corrected anchor bolt usage quantity is rounded up;

[0093] When F<R01, the fourth preset anchor bolt usage correction coefficient B4 is selected to correct the first preset anchor bolt usage quantity A1, and the corrected anchor bolt usage quantity is A1*B4;

[0094] When R01≤F<R02, the third preset anchor bolt usage correction coefficient B3 is selected to correct the second preset anchor bolt usage quantity A2, and the corrected anchor bolt usage quantity is A2*B3;

[0095] When R02≤F<R03, the second preset anchor bolt usage correction coefficient B2 is selected to correct the third preset anchor bolt usage quantity A3, and the corrected anchor bolt usage quantity is A3*B2;

[0096] When R03≤F<R04, the first preset anchor bolt usage quantity correction coefficient B1 is selected to correct the fourth preset anchor bolt usage quantity A4, and the corrected anchor bolt usage quantity is A4*B1.

[0097] Based on the same technical concept, see Figure 2As shown, the present invention also provides a wind power tower bottom anchor plate pre-embedding device, which is applied to the wind power tower bottom anchor plate pre-embedding method, comprising:

[0098] The control unit is used to lift the lower anchor plate to a position not less than 300 mm above the embedded part, insert the screw holes on the lower anchor plate and the support bolts of the lower anchor plate into the corresponding positions, place a nut on the upper and lower ends of the lower anchor plate, and add a gasket to the nut at the lower end of the lower anchor plate. When the embedded part is vertically aligned with the support bolt, the lower anchor plate is placed on the embedded part;

[0099] The welding unit is used to weld the supporting bolts used to support the lower anchor plate to the corresponding embedded parts, and the height of the welding leg is not less than 6mm;

[0100] The adjustment unit is used to adjust the support bolts to a preset standard height, and the horizontality of the lower anchor plate is not greater than 3mm.

[0101] In a specific embodiment of the present application, the control unit is further used to hoist the upper anchor plate, and evenly and symmetrically penetrate the positioning anchor bolts through the inner and outer bolt holes of the upper anchor plate, penetrate the positioning anchor bolts into the upper anchor plate, and set temporary steel nuts on the upper anchor plate;

[0102] A setting unit is used to set a half nut at the lower end of the positioning anchor bolt, insert the PVC sleeve into the positioning anchor bolt, sleeve the heat shrink tube on the PVC sleeve, and set a nylon adjustment nut at the upper end of the positioning anchor bolt;

[0103] The control unit is also used to lift the upper anchor plate and the positioning anchor bolt, and move the upper anchor plate and the positioning anchor bolt to the top of the lower anchor plate, insert the positioning anchor bolt and the bolt holes of the lower anchor plate into the corresponding holes, and tighten the nut under the lower anchor plate. The tightening torque of the nut is 300N*m.

[0104] In a specific embodiment of the present application, the control unit is also used to install the common anchor bolts in a diagonal order after the positioning anchor bolts are installed, and the upper anchor plate at the upper end of the common anchor bolts is inserted in sequence, and the lower anchor plate is inserted at the end where the half nut has been installed, and the tightening torque of the half nut is 300N*m;

[0105] The control unit is also used to set stakes every 90° on the outside of the fan, connect the upper anchor plate to the stakes, adjust the upper anchor plate and the lower anchor plate until they are concentric. When the upper anchor plate and the lower anchor plate are concentric, adjust the levelness of the upper anchor plate until it reaches the preset standard level, and the levelness of the upper anchor plate is not more than 1.5mm. Heat the heat shrink tube at the port of the PVC sleeve to shrink it and seal the gap between the PVC sleeve and the anchor bolt.

[0106] In a specific embodiment of the present application, the control unit is also used to pass a number of steel bars into the anchor assembly, and one end of the steel bar is welded to the upper anchor plate, and the other end of the steel bar is welded to the embedded part, and the horizontality of the upper anchor plate is detected. When the horizontality of the upper anchor plate reaches a preset standard horizontality, concrete is poured.

[0107] In a specific embodiment of the present application, the control unit is further used to detect the diameter d of the wind turbine tower and the prestress F of the anchor bolt, and determine the number of anchor bolts to be used according to the diameter d of the wind turbine tower and the prestress F of the anchor bolt;

[0108] The control unit is pre-set with a preset wind turbine tower diameter matrix T0 and a preset anchor bolt usage number matrix A. For the preset anchor bolt usage number matrix A, A(A1, A2, A3, A4) is set, where A1 is the first preset anchor bolt usage number, A2 is the second preset anchor bolt usage number, A3 is the third preset anchor bolt usage number, A4 is the fourth preset anchor bolt usage number, and A1<A2<A3<A4;

[0109] For the preset wind turbine tower diameter matrix T0, set T0(T01, T02, T03, T04), where T01 is the first preset wind turbine tower diameter, T02 is the second preset wind turbine tower diameter, T03 is the third preset wind turbine tower diameter, T04 is the fourth preset wind turbine tower diameter, and T01<T02<T03<T04;

[0110] The control unit is further used to select the corresponding number of anchor bolts to be used as the determined number of anchor bolts to be used according to the relationship between d and the preset wind turbine tower diameter matrix T0;

[0111] When d<T01, the first preset anchor bolt usage quantity A1 is selected as the determined anchor bolt usage quantity;

[0112] When T01≤d<T02, the second preset anchor bolt usage quantity A2 is selected as the determined anchor bolt usage quantity;

[0113] When T02≤d<T03, the third preset anchor bolt usage quantity A3 is selected as the determined anchor bolt usage quantity;

[0114] When T03≤d<T04, the fourth preset anchor bolt usage quantity A4 is selected as the determined anchor bolt usage quantity;

[0115] A preset anchor bolt prestress matrix R0 and a preset anchor bolt usage quantity correction coefficient matrix B are preset. For the preset anchor bolt usage quantity correction coefficient matrix B, B(B1, B2, B3, B4) is set, where B1 is the first preset anchor bolt usage quantity correction coefficient, B2 is the second preset anchor bolt usage quantity correction coefficient, B3 is the third preset anchor bolt usage quantity correction coefficient, B4 is the fourth preset anchor bolt usage quantity correction coefficient, and 1<B1<B2<B3<B4<1.5;

[0116] For the preset anchor bolt prestress matrix R0, set R0(R01, R02, R03, R04), where R01 is the first preset anchor bolt prestress, R02 is the second preset anchor bolt prestress, R03 is the third preset anchor bolt prestress, R04 is the fourth preset anchor bolt prestress, and R01<R02<R03<R04;

[0117] According to the relationship between F and the preset anchor bolt prestress matrix R0, a corresponding anchor bolt usage correction coefficient is selected to correct the preset anchor bolt usage quantity, and the corrected anchor bolt usage quantity is rounded up;

[0118] When F<R01, the fourth preset anchor bolt usage correction coefficient B4 is selected to correct the first preset anchor bolt usage quantity A1, and the corrected anchor bolt usage quantity is A1*B4;

[0119] When R01≤F<R02, the third preset anchor bolt usage correction coefficient B3 is selected to correct the second preset anchor bolt usage quantity A2, and the corrected anchor bolt usage quantity is A2*B3;

[0120] When R02≤F<R03, the second preset anchor bolt usage correction coefficient B2 is selected to correct the third preset anchor bolt usage quantity A3, and the corrected anchor bolt usage quantity is A3*B2;

[0121] When R03≤F<R04, the first preset anchor bolt usage quantity correction coefficient B1 is selected to correct the fourth preset anchor bolt usage quantity A4, and the corrected anchor bolt usage quantity is A4*B1.

[0122] In summary, the anchor cage used in the present invention has the advantages of simple process and fast installation speed, and in view of its high precision requirement, accurate parameter control is performed during the installation and assembly process of the anchor assembly to improve the installation accuracy of each installation step, improve the overall installation quality, and fully ensure the safety and reliability of the infrastructure. The present invention has the advantages of accuracy, efficiency and reliability.

[0123] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention should be regarded as falling within the protection scope of the present invention and subject to restrictions as long as they do not lose the essence of the present invention.

[0124] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process and related instructions of the system described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0125] It should be noted that the system provided in the above embodiment is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be decomposed or combined. For example, the modules in the above embodiments can be combined into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not regarded as improper limitations of the present invention.

[0126] Those skilled in the art should be able to appreciate that the modules and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two, and the programs corresponding to the software modules and method steps can be placed in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the technical field. In order to clearly illustrate the interchangeability of electronic hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0127] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0128] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0129] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A method for pre-embedding anchor plates at the bottom of a wind turbine tower. It is characterized in that include: Lift the lower anchor plate to a position not less than 300mm above the embedded part, insert the screw holes on the lower anchor plate and the lower anchor plate support bolts respectively, place a nut on the upper and lower ends of the lower anchor plate, and add a gasket to the nut at the lower end of the lower anchor plate. When the embedded part is vertically aligned with the support bolt, place the lower anchor plate on the embedded part; Welding the support bolts used to support the lower anchor plate to the corresponding embedded parts, with the height of the weld leg being no less than 6 mm; The support bolts are adjusted to a preset standard height, and the horizontality of the lower anchor plate is not greater than 3 mm.

2. A method for pre-embedding anchor plates at the bottom of a wind turbine tower according to claim 1, It is characterized in that Also includes: Lift the upper anchor plate, and evenly and symmetrically insert positioning anchor bolts through the inner and outer bolt holes of the upper anchor plate, insert the positioning anchor bolts into the upper anchor plate, and install temporary steel nuts on the upper anchor plate; A half nut is arranged at the lower end of the positioning anchor bolt, and a PVC sleeve is inserted into the positioning anchor bolt, a heat shrink tube is sleeved on the PVC sleeve, and a nylon adjustment nut is arranged at the upper end of the positioning anchor bolt; Lift the upper anchor plate and the positioning anchor bolt, and move the upper anchor plate and the positioning anchor bolt to the top of the lower anchor plate, insert the positioning anchor bolt and the bolt holes of the lower anchor plate into the corresponding holes, and tighten the nut under the lower anchor plate. The tightening torque of the nut is 300N*m.

3. A method for pre-embedding anchor plates at the bottom of a wind turbine tower according to claim 2, It is characterized in that Also includes: After the positioning anchor bolts are installed, install the common anchor bolts in diagonal order, insert the upper anchor plate at the upper end of the common anchor bolts in turn, and insert the lower anchor plate at the end where the half nut has been installed. The tightening torque of the half nut is 300N*m. Set stakes at every 90° on the outside of the fan, connect the upper anchor plate to the stakes, adjust the upper anchor plate and the lower anchor plate until they are concentric, when the upper anchor plate and the lower anchor plate are concentric, adjust the level of the upper anchor plate until it reaches a preset standard level, and the level of the upper anchor plate is not greater than 1.5mm, heat the heat shrink tube at the port of the PVC sleeve to shrink it and seal the gap between the PVC sleeve and the anchor bolt.

4. A method for pre-embedding anchor plates at the bottom of a wind turbine tower according to claim 3, It is characterized in that Also includes: A plurality of steel bars are inserted into the anchor assembly, and one end of the steel bar is welded to the upper anchor plate, and the other end of the steel bar is welded to the embedded part, and the levelness of the upper anchor plate is detected. When the levelness of the upper anchor plate reaches the preset standard levelness, concrete is poured.

5. A method for pre-embedding anchor plates at the bottom of a wind turbine tower according to claim 4, It is characterized in that Also includes: Detecting the diameter d of the wind turbine tower and the prestress F of the anchor bolts, and determining the number of the anchor bolts to be used according to the diameter d of the wind turbine tower and the prestress F of the anchor bolts; A preset wind turbine tower diameter matrix T0 and a preset anchor bolt usage number matrix A are preset. For the preset anchor bolt usage number matrix A, A(A1, A2, A3, A4) is set, wherein A1 is the first preset anchor bolt usage number, A2 is the second preset anchor bolt usage number, A3 is the third preset anchor bolt usage number, A4 is the fourth preset anchor bolt usage number, and A1<A2<A3<A4; For the preset wind turbine tower diameter matrix T0, set T0(T01, T02, T03, T04), wherein T01 is the first preset wind turbine tower diameter, T02 is the second preset wind turbine tower diameter, T03 is the third preset wind turbine tower diameter, T04 is the fourth preset wind turbine tower diameter, and T01<T02<T03<T04; According to the relationship between d and the preset wind turbine tower diameter matrix T0, a corresponding number of anchor bolts to be used is selected as the determined number of anchor bolts to be used; When d<T01, the first preset anchor bolt usage quantity A1 is selected as the determined usage quantity of the anchor bolts; When T01≤d<T02, the second preset anchor bolt usage quantity A2 is selected as the determined usage quantity of the anchor bolts; When T02≤d<T03, the third preset anchor bolt usage quantity A3 is selected as the determined anchor bolt usage quantity; When T03≤d<T04, the fourth preset anchor bolt usage quantity A4 is selected as the determined anchor bolt usage quantity; A preset anchor bolt prestress matrix R0 and a preset anchor bolt usage quantity correction coefficient matrix B are preset. For the preset anchor bolt usage quantity correction coefficient matrix B, B(B1, B2, B3, B4) is set, where B1 is the first preset anchor bolt usage quantity correction coefficient, B2 is the second preset anchor bolt usage quantity correction coefficient, B3 is the third preset anchor bolt usage quantity correction coefficient, B4 is the fourth preset anchor bolt usage quantity correction coefficient, and 1<B1<B2<B3<B4<1.5; For the preset anchor bolt prestress matrix R0, set R0(R01, R02, R03, R04), wherein R01 is the first preset anchor bolt prestress, R02 is the second preset anchor bolt prestress, R03 is the third preset anchor bolt prestress, R04 is the fourth preset anchor bolt prestress, and R01<R02<R03<R04; According to the relationship between F and the preset anchor bolt prestress matrix R0, a corresponding anchor bolt usage correction coefficient is selected to correct the preset anchor bolt usage quantity, and the corrected anchor bolt usage quantity is rounded up; When F<R01, the fourth preset anchor bolt usage correction coefficient B4 is selected to correct the first preset anchor bolt usage quantity A1, and the corrected anchor bolt usage quantity is A1*B4; When R01≤F<R02, the third preset anchor bolt usage correction coefficient B3 is selected to correct the second preset anchor bolt usage quantity A2, and the corrected anchor bolt usage quantity is A2*B3; When R02≤F<R03, the second preset anchor bolt usage correction coefficient B2 is selected to correct the third preset anchor bolt usage quantity A3, and the corrected anchor bolt usage quantity is A3*B2; When R03≤F<R04, the first preset anchor bolt usage quantity correction coefficient B1 is selected to correct the fourth preset anchor bolt usage quantity A4, and the corrected anchor bolt usage quantity is A4*B1.

6. A wind turbine tower bottom anchor plate pre-embedding device, used in the wind turbine tower bottom anchor plate pre-embedding method as claimed in any one of claims 1 to 5, It is characterized in that include: A control unit is used to lift the lower anchor plate to a position not less than 300 mm above the embedded part, insert the screw holes on the lower anchor plate and the lower anchor plate support bolts respectively, place a nut at the upper end and the lower end of the lower anchor plate, and add a gasket to the nut at the lower end of the lower anchor plate. When the embedded part is vertically aligned with the support bolt, the lower anchor plate is placed on the embedded part; A welding unit, used for welding the supporting bolts for supporting the lower anchor plate to the corresponding embedded parts, and the height of the welding leg is not less than 6 mm; The adjusting unit is used to adjust the supporting bolt to a preset standard height, and the horizontality of the lower anchor plate is not greater than 3 mm.

7. A wind power tower bottom anchor plate pre-embedded device according to claim 6, It is characterized in that The control unit is also used to lift the upper anchor plate, and evenly and symmetrically penetrate the inner and outer bolt holes of the upper anchor plate with positioning anchor bolts, penetrate the positioning anchor bolts into the upper anchor plate, and set temporary steel nuts on the upper anchor plate; A setting unit, used for setting a half nut at the lower end of the positioning anchor bolt, inserting a PVC sleeve into the positioning anchor bolt, sleeve a heat shrink tube on the PVC sleeve, and setting a nylon adjusting nut at the upper end of the positioning anchor bolt; The control unit is also used to lift the upper anchor plate and the positioning anchor bolt, and move the upper anchor plate and the positioning anchor bolt to the top of the lower anchor plate, insert the positioning anchor bolt and the bolt holes of the lower anchor plate into the corresponding holes, and tighten the nut under the lower anchor plate, and the tightening torque of the nut is 300N*m.

8. A wind power tower bottom anchor plate pre-embedded device according to claim 7, It is characterized in that The control unit is also used to install the common anchor bolts in a diagonal order after the positioning anchor bolts are installed, insert the upper anchor plate at the upper end of the common anchor bolts in sequence, and insert the lower anchor plate at the end where the half nut has been installed, and the tightening torque of the half nut is 300N*m; The control unit is also used to set stakes at every 90° position on the outside of the fan, connect the upper anchor plate with the stakes, adjust the upper anchor plate and the lower anchor plate until they are concentric, and when the upper anchor plate and the lower anchor plate are concentric, adjust the level of the upper anchor plate until it reaches a preset standard level, and the level of the upper anchor plate is not greater than 1.5mm, heat the heat shrink tube at the port of the PVC sleeve to shrink it and seal the gap between the PVC sleeve and the anchor bolt.

9. A wind power tower bottom anchor plate pre-embedded device according to claim 8, It is characterized in that The control unit is also used to insert a plurality of steel bars into the anchor assembly, and one end of the steel bar is welded to the upper anchor plate, and the other end of the steel bar is welded to the embedded part, and the horizontality of the upper anchor plate is detected. When the horizontality of the upper anchor plate reaches the preset standard horizontality, concrete is poured.

10. A wind power tower bottom anchor plate pre-embedded device according to claim 9, It is characterized in that The control unit is further used to detect the diameter d of the wind turbine tower and the prestress F of the anchor bolt, and determine the number of the anchor bolts to be used according to the diameter d of the wind turbine tower and the prestress F of the anchor bolt; The control unit is pre-set with a preset wind turbine tower diameter matrix T0 and a preset anchor bolt usage number matrix A. For the preset anchor bolt usage number matrix A, A(A1, A2, A3, A4) is set, wherein A1 is the first preset anchor bolt usage number, A2 is the second preset anchor bolt usage number, A3 is the third preset anchor bolt usage number, A4 is the fourth preset anchor bolt usage number, and A1<A2<A3<A4; For the preset wind turbine tower diameter matrix T0, set T0(T01, T02, T03, T04), wherein T01 is the first preset wind turbine tower diameter, T02 is the second preset wind turbine tower diameter, T03 is the third preset wind turbine tower diameter, T04 is the fourth preset wind turbine tower diameter, and T01<T02<T03<T04; The control unit is further used to select a corresponding number of anchor bolts to be used as the determined number of anchor bolts to be used according to the relationship between d and the preset wind turbine tower diameter matrix T0; When d<T01, the first preset anchor bolt usage quantity A1 is selected as the determined usage quantity of the anchor bolts; When T01≤d<T02, the second preset anchor bolt usage quantity A2 is selected as the determined usage quantity of the anchor bolts; When T02≤d<T03, the third preset anchor bolt usage quantity A3 is selected as the determined anchor bolt usage quantity; When T03≤d<T04, the fourth preset anchor bolt usage quantity A4 is selected as the determined anchor bolt usage quantity; A preset anchor bolt prestress matrix R0 and a preset anchor bolt usage quantity correction coefficient matrix B are preset. For the preset anchor bolt usage quantity correction coefficient matrix B, B(B1, B2, B3, B4) is set, where B1 is the first preset anchor bolt usage quantity correction coefficient, B2 is the second preset anchor bolt usage quantity correction coefficient, B3 is the third preset anchor bolt usage quantity correction coefficient, B4 is the fourth preset anchor bolt usage quantity correction coefficient, and 1<B1<B2<B3<B4<1.5; For the preset anchor bolt prestress matrix R0, set R0(R01, R02, R03, R04), wherein R01 is the first preset anchor bolt prestress, R02 is the second preset anchor bolt prestress, R03 is the third preset anchor bolt prestress, R04 is the fourth preset anchor bolt prestress, and R01<R02<R03<R04; According to the relationship between F and the preset anchor bolt prestress matrix R0, a corresponding anchor bolt usage correction coefficient is selected to correct the preset anchor bolt usage quantity, and the corrected anchor bolt usage quantity is rounded up; When F<R01, the fourth preset anchor bolt usage correction coefficient B4 is selected to correct the first preset anchor bolt usage quantity A1, and the corrected anchor bolt usage quantity is A1*B4; When R01≤F<R02, the third preset anchor bolt usage correction coefficient B3 is selected to correct the second preset anchor bolt usage quantity A2, and the corrected anchor bolt usage quantity is A2*B3; When R02≤F<R03, the second preset anchor bolt usage correction coefficient B2 is selected to correct the third preset anchor bolt usage quantity A3, and the corrected anchor bolt usage quantity is A3*B2; When R03≤F<R04, the first preset anchor bolt usage quantity correction coefficient B1 is selected to correct the fourth preset anchor bolt usage quantity A4, and the corrected anchor bolt usage quantity is A4*B1.

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