Land-based wind power prestressed anchor bolt wind turbine foundation and construction method

Abstract

The application relates to the technical field of wind turbine foundations, and discloses a land wind power prestressed anchor bolt wind turbine foundation and a construction method. The lower end of a support base is provided with a bottom framework mechanism, a wire pipe penetrates through the middle of the bottom framework mechanism, and a wire upwardly extending in the wire pipe is fixed through an auxiliary positioning mechanism. The middle part of the support base is provided with a connecting clamp member covering the outer side of the auxiliary positioning mechanism. A middle reinforcing framework is fixed between a plurality of groups of vertical steel bars. The middle part of the middle reinforcing framework is fixed with an adjusting screw cylinder mechanism. The bottom part of the adjusting screw cylinder mechanism is screwed to the top outer side of the connecting clamp member, so that the auxiliary positioning mechanism extends into the inside of the adjusting screw cylinder mechanism. The combination between various components of the application is simple and convenient. After the concrete is poured, the overall structural strength meets the requirements. The wire is isolated from the concrete under the protection of the connecting clamp member and the adjusting screw cylinder mechanism, so that the wire is prevented from being damaged after the concrete is poured, and the service life of the wire is improved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine foundation technology, specifically to an onshore wind turbine prestressed anchor bolt foundation and its construction method. Background Technology

[0002] Onshore wind power refers to wind power generation projects constructed and operated on land. It utilizes wind power to rotate the blades of a wind turbine, generating mechanical energy, which is then converted into electrical energy by the generator. Onshore wind turbine units generally consist of a wind turbine tower, generator blades at the top of the tower, and a concrete base for securing the tower. Currently, the framework of the concrete base is often fabricated on-site by binding. Due to the complex structure of the concrete base framework, this not only leads to inconvenient operation and low construction efficiency during the binding process, but also makes it difficult for power conductors to pass through the framework. Furthermore, the lack of protection for the power conductors means that after the concrete is poured, they are directly covered by the concrete, which is detrimental to their service life. Therefore, we introduce a prestressed anchor bolt wind turbine foundation and construction method for onshore wind power. Summary of the Invention

[0003] The purpose of this invention is to provide a prestressed anchor bolt wind turbine foundation and construction method for onshore wind power, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A prestressed anchor bolt wind turbine foundation for onshore wind power includes a support base. The lower end of the support base is provided with a bottom frame mechanism. A cable routing pipe runs through the middle of the bottom frame mechanism. An auxiliary positioning mechanism is provided on the cable routing pipe that extends through and out of the support base. The upward-extending wire inside the cable routing pipe is fixed by the auxiliary positioning mechanism.

[0006] The support base is provided with a connecting clip in the middle that covers the outside of the auxiliary positioning mechanism. The bottom of the connecting clip extends into the cable tray, and after the nut on the connecting clip is tightened, the support base and the cable tray are connected and fixed through the connecting clip.

[0007] The support base is provided with several sets of vertical steel bars that are circular and evenly spaced. A middle reinforcing frame is fixed between the several sets of vertical steel bars. An adjusting screw mechanism is fixed in the middle of the middle reinforcing frame. The bottom of the adjusting screw mechanism is screwed to the outside of the top of the connecting clip, so that the auxiliary positioning mechanism extends into the adjusting screw mechanism. The wire inside the auxiliary positioning mechanism extends through the adjusting screw mechanism.

[0008] The adjusting screw mechanism is used to adjust the vertical length of the intermediate reinforcing frame and to protect the conductors.

[0009] Preferably, the bottom skeleton mechanism comprises a square skeleton fixed at the lower end of the support base, support skeletons symmetrically connected at the lower end of the square skeleton, and a bottom protection skeleton connected to the side edges of the lower end of the support base.

[0010] The square skeleton is located in the bottom protection skeleton, and the bottom protection skeleton comprises vertical short bars fixed at the side edges of the lower end of the support base and side edge stirrups fixed outside the vertical short bars.

[0011] Preferably, the square skeleton is located at the upper end of the wiring pipe, and the wiring pipe passes through the front and rear support skeletons, and the corresponding vertical steel bars pass through the support base and are inserted into the square skeleton and the support skeleton.

[0012] Preferably, the upper middle part of the wiring pipe is provided with a wire outlet hole, and the upper middle part of the support base is provided with a through hole, and the diameter of the wire outlet hole is smaller than the diameter of the through hole.

[0013] The auxiliary positioning mechanism comprises two groups of vertical columns and a plurality of groups of rubber ring seats penetrating the two groups of vertical columns, and the two groups of vertical columns penetrate upward through the wire outlet hole and the through hole.

[0014] The plurality of groups of rubber ring seats are arranged at equal intervals from top to bottom, and the wires penetrate upward through the wire outlet hole and the through hole and then pass out through the middle part of the rubber ring seat.

[0015] Preferably, the connecting clamp comprises a bottom connecting cylinder, a rotating clamping block movably connected by a pin shaft at both sides of the lower part of the bottom connecting cylinder, an arc-shaped elastic metal plate fixed inside the slot, and a rubber ring sleeved outside the bottom connecting cylinder.

[0016] The outer diameter of the rubber ring is smaller than the diameter of the through hole, and the outer diameter of the rubber ring is larger than the diameter of the wire outlet hole.

[0017] The rotating clamping block rotates around the pin shaft at the bottom of the rotating clamping block to the inside of the slot, and the rubber ring is sleeved on the top of the rotating clamping block, so that the inner wall of the rotating clamping block tightly abuts against the arc-shaped elastic metal plate, and the rotating clamping block is fixed in the slot.

[0018] Preferably, the bottom connecting cylinder covers the outside of the auxiliary positioning mechanism, and after the lower end of the bottom connecting cylinder penetrates into the wiring groove inside the wiring pipe through the through hole and the wire outlet hole in sequence, the rubber ring is located at the upper end of the wiring pipe, so that the rubber ring is no longer sleeved on the top of the rotating clamping block. At this time, under the elastic force of the arc-shaped elastic metal plate on the rotating clamping block, the rotating clamping block rotates around the pin shaft and opens, and after the nut is locked on the outside of the upper part of the bottom connecting cylinder, the nut is clamped on the upper end of the support base, and the rotating clamping block is clamped on the top of the wiring groove.

[0019] Preferably, the adjusting screw mechanism comprises an upper protection cylinder and upper and lower groups of adjusting internal screw threads screwed on the upper protection cylinder.

[0020] The intermediate reinforcing framework comprises two groups of connecting ring seats sleeved on the upper protective cylinder, a sleeving cylinder fixed by a plurality of groups of connecting arms on the side of the connecting ring seat, and two groups of vertical stirrups connected between the corresponding two groups of connecting arms;

[0021] The sleeving cylinder is sleeved on the vertical steel bars;

[0022] The upper adjusting internal threaded seat is located at the lower end of the upper connecting ring seat, and the lower adjusting internal threaded seat is located at the upper end of the lower connecting ring seat;

[0023] The upper protective cylinder is sleeved outside the auxiliary positioning mechanism, and the bottom of the upper protective cylinder is screwed outside the top of the bottom connecting cylinder.

[0024] Preferably, a plurality of groups of upper and lower equidistantly distributed internal annular stirrups are fixed between the internal vertical stirrups, a plurality of groups of upper and lower equidistantly distributed external annular stirrups are fixed between the external vertical stirrups, and the internal annular stirrups and the corresponding external annular stirrups are staggered in the upper and lower directions.

[0025] The application also provides a construction method of the onshore wind power prestressed anchor bolt wind turbine foundation.

[0026] S1, the bottom framework mechanism is seated on the wiring pipe, so that the wiring pipe penetrates and extends out from the middle part of the bottom framework mechanism, and the wires extending upwards in the wiring pipe are fixed by the auxiliary positioning mechanism;

[0027] S2, the support seat is seated on the top of the bottom framework mechanism, the auxiliary positioning mechanism and the wires inside the auxiliary positioning mechanism penetrate and extend out of the support seat, and the plurality of groups of vertical steel bars are connected to the support seat;

[0028] S3, the connecting clamp is covered outside the auxiliary positioning mechanism, the bottom of the connecting clamp extends into the wiring pipe, and the nut is locked, so that the support seat and the wiring pipe are connected and fixed by the connecting clamp;

[0029] S4, the auxiliary positioning mechanism extends into the adjusting screw cylinder mechanism, and the intermediate reinforcing framework is assembled with the plurality of groups of vertical steel bars, the bottom of the adjusting screw cylinder mechanism is screwed outside the top of the connecting clamp, so that the wires inside the auxiliary positioning mechanism penetrate and extend out through the adjusting screw cylinder mechanism.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up the support base and bottom frame mechanism, the present invention can increase the contact area between the onshore wind turbine foundation and the ground pit after concrete pouring, preventing the onshore wind turbine foundation from sinking; all components of the onshore wind turbine foundation can be prefabricated and then assembled on-site, which is simple and convenient and helps to improve construction efficiency; the upward-extending wires in the conduit are fixed by an auxiliary positioning mechanism, and the wires extend upward through the outlet hole and through hole and then pass through the middle of the rubber ring seat, allowing the wires to extend vertically upward from the ground pit. After the onshore wind turbine tower is installed at the top of the onshore wind turbine foundation, the wires can easily enter the wind turbine tower.

[0031] The conductor of this invention is isolated from the concrete under the protection of the connecting clip and the adjusting screw mechanism, preventing damage to the conductor after concrete pouring and thus improving the service life of the conductor. The bottom of the connecting clip extends into the conduit, and after the nut on the connecting clip is tightened, the support base and the conduit are connected and fixed through the connecting clip. The connection between the connecting clip and the support base and the conduit is simple and quick, and can ensure the firmness of the connection between the support base and the conduit, further improving the overall structural strength of the onshore wind turbine prestressed anchor bolt foundation. An intermediate reinforcing skeleton is fixed between the vertical steel bars, thereby improving the overall structural strength of several sets of vertical steel bars and the intermediate reinforcing skeleton after concrete pouring. An adjusting screw mechanism is fixed in the middle of the intermediate reinforcing skeleton, and the bottom of the adjusting screw mechanism is screwed to the outside of the top of the connecting clip to ensure the vertical state of the adjusting screw mechanism, thereby ensuring that several sets of vertical steel bars and the intermediate reinforcing skeleton are also in a vertical state, thereby improving the compressive strength of the overall structure of several sets of vertical steel bars, intermediate reinforcing skeleton and adjusting screw mechanism after concrete pouring. Attached Figure Description

[0032] Figure 1 This is an exploded structural diagram of the overall assembly of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the connection between the support base, the bottom protective frame, and the vertical steel bars of the present invention;

[0034] Figure 3 This is a three-dimensional structural diagram of the cable routing tube, auxiliary positioning mechanism, and wire connection of the present invention.

[0035] Figure 4 For the present invention Figure 3 A schematic diagram of the cross-sectional structure;

[0036] Figure 5 This is a three-dimensional structural diagram of the connecting card of the present invention;

[0037] Figure 6 The sectional structure schematic diagram of the present application Figure 5

[0038] Figure 7 The three-dimensional structure schematic diagram of the intermediate reinforcing framework in the present application

[0039] Figure 8 The top view structure schematic diagram of the vertical steel bar, the intermediate reinforcing framework, the outer ring-shaped stirrup and the inner ring-shaped stirrup connection in the present application

[0040] Figure 9 The three-dimensional structure schematic diagram of the adjusting screw cylinder mechanism in the present application

[0041] Figure 10 The sectional structure schematic diagram of the adjusting screw cylinder mechanism, the intermediate reinforcing framework, the outer ring-shaped stirrup and the inner ring-shaped stirrup connection in the present application

[0042] Figure 11 The sectional structure schematic diagram of the connecting card bottom extending into the wiring groove in the present application

[0043] Figure 12 The sectional structure schematic diagram of the connecting card realizing the support seat and the wiring tube connection in the present application

[0044] Figure 13 The structure schematic diagram of the whole assembly in the present application

[0045] In the figure: 1, support seat; 101, through hole; 2, bottom protection framework; 201, side stirrup; 202, vertical short steel; 3, square framework; 4, support framework; 5, wiring tube; 501, wiring groove; 502, wire outlet hole; 6, auxiliary positioning mechanism; 601, rubber ring seat; 602, vertical column; 7, wire; 8, connecting card; 801, bottom connecting cylinder; 802, rubber ring; 803, rotating clamping block; 804, slot; 805, pin shaft; 806, arc-shaped elastic metal plate; 9, nut; 10, vertical steel bar; 11, intermediate reinforcing framework; 1101, connecting ring seat; 1102, connecting arm; 1103, sleeve joint cylinder; 1104, vertical stirrup; 12, adjusting screw cylinder mechanism; 121, upper protection cylinder; 122, adjusting internal thread seat; 13, outer ring-shaped stirrup; 14, inner ring-shaped stirrup. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. ​

[0047] Embodiment:

[0048] Please refer to Figure 1 -13, the application provides a technical scheme:

[0049] A land wind power prestressed anchor bolt wind turbine foundation, including support seat 1, the lower end of support seat 1 is provided with bottom framework mechanism, the middle part of bottom framework mechanism is penetrated by wiring pipe 5;

[0050] The bottom framework mechanism includes the square framework 3 fixed at the lower end of the support seat 1, the support framework 4 connected symmetrically on the front and back sides of the lower end of the square framework 3 and the bottom protection framework 2 connected to the side edges of the lower end of the support seat 1;

[0051] As Figure 2 , 11 -13 shows that the square framework 3 is located in the bottom protection framework 2, and the bottom protection framework 2 includes vertical short bars 202 fixed at equal intervals on the side edges of the lower end of the support seat 1 and side edge stirrups 201 fixed outside the vertical short bars 202.

[0052] The square framework 3 is located on the upper end of the wiring pipe 5, and the wiring pipe 5 passes through between the front and back two groups of support frameworks 4, and the corresponding lower end of the vertical steel bars 10 is inserted into the square framework 3 and the support framework 4 through the support seat 1.

[0053] The wiring pipe 5 is provided with an auxiliary positioning mechanism 6 penetrating and extending out of the support seat 1, and the wires 7 extending upward in the wiring pipe 5 are fixed through the auxiliary positioning mechanism 6;

[0054] The upper end of the wiring pipe 5 is provided with a wire outlet hole 502, and the upper end of the support seat 1 is provided with a through hole 101, and the diameter of the wire outlet hole 502 is smaller than the diameter of the through hole 101;

[0055] As Figure 3 and 4 shown, the auxiliary positioning mechanism 6 includes two groups of vertical columns 602 and a plurality of groups of rubber ring seats 601 penetrating the two groups of vertical columns 602, and the two groups of vertical columns 602 penetrate and extend upward through the wire outlet hole 502 and the through hole 101;

[0056] A plurality of groups of rubber ring seats 601 are arranged at equal intervals upward and downward, and the wires 7 penetrate and extend upward through the wire outlet hole 502 and the through hole 101 and then pass out through the middle part of the rubber ring seat 601.

[0057] The middle part of the support seat 1 is provided with a connecting clamp 8 covering the outside of the auxiliary positioning mechanism 6, the bottom of the connecting clamp 8 extends into the wiring pipe 5, and after the nut 9 on the connecting clamp 8 is locked, the support seat 1 and the wiring pipe 5 are connected and fixed through the connecting clamp 8;

[0058] As Figure 5and 6 As shown, the connecting clip 8 includes a bottom connecting cylinder 801, a rotating clip 803 movably connected to the slots 804 on both sides of the lower part of the bottom connecting cylinder 801 by a pin 805, an arc-shaped elastic metal plate 806 fixed inside the slots 804, and a rubber ring 802 sleeved on the outside of the bottom connecting cylinder 801.

[0059] The outer diameter of the rubber ring 802 is smaller than the diameter of the through hole 101, and the outer diameter of the rubber ring 802 is larger than the diameter of the outlet hole 502.

[0060] After the rotating block 803 rotates to the inside of the slot 804 with the bottom pin 805 as the center, the rubber ring 802 is put on the top of the rotating block 803 so that the inner wall of the rotating block 803 is in close contact with the arc-shaped elastic metal plate 806, and the rotating block 803 is fixed in the slot 804.

[0061] The bottom connecting cylinder 801 covers the outside of the auxiliary positioning mechanism 6. The lower end of the bottom connecting cylinder 801 extends sequentially through the through hole 101 and the outlet hole 502 into the cable tray 501 inside the cable tray 5. The rubber ring 802 then sits on the upper end of the cable tray 5, thus the rubber ring 802 is no longer fitted onto the top of the rotating block 803. At this time, under the elastic force of the arc-shaped elastic metal plate 806 on the rotating block 803, the rotating block 803 rotates and opens around the pin 805 as the center (as shown). Figure 11 (As shown).

[0062] After the nut 9 on the upper outer side of the bottom connecting cylinder 801 is tightened, the nut 9 is locked onto the upper end of the support base 1, and the rotating locking block 803 is locked onto the top of the cable tray 501 (e.g. Figure 12 (As shown).

[0063] The support base 1 is provided with several groups of vertical steel bars 10 that are circular and evenly distributed, and an intermediate reinforcing skeleton 11 is fixed between the several groups of vertical steel bars 10.

[0064] like Figure 7 As shown, the intermediate reinforcing frame 11 includes two sets of connecting ring seats 1101 fitted onto the upper protective cylinder 121, a sleeve cylinder 1103 fixed to the side of the connecting ring seat 1101 by several sets of connecting arms 1102, and two sets of inner and outer vertical stirrups 1104 connected between the corresponding two sets of connecting arms 1102.

[0065] The upper protective cylinder 121 is fitted onto the outside of the auxiliary positioning mechanism 6, and the bottom of the upper protective cylinder 121 is screwed to the outside of the top of the bottom connecting cylinder 801 (e.g., Figure 13 (As shown).

[0066] A plurality of groups of inner annular stirrups 14 are fixed between the inner vertical stirrups 1104 in a sleeved manner and are distributed equidistantly in up and down directions; a plurality of groups of outer annular stirrups 13 are fixed between the outer vertical stirrups 1104 in a sleeved manner and are distributed equidistantly in up and down directions; and the inner annular stirrups 14 and the corresponding outer annular stirrups 13 are staggered in up and down directions (as shown in Figure 10 ).

[0067] The middle part of the intermediate reinforcing framework 11 is fixed with an adjusting screw mechanism 12, the bottom of the adjusting screw mechanism 12 is screwed to the top outer side of the connecting clamp 8, so that the auxiliary positioning mechanism 6 extends into the inside of the adjusting screw mechanism 12, and the guide wire 7 in the inside of the auxiliary positioning mechanism 6 extends out through the adjusting screw mechanism 12;

[0068] The adjusting screw mechanism 12 is used for adjusting the up and down length of the intermediate reinforcing framework 11, and protecting the guide wire 7.

[0069] As shown in Figure 9 , the adjusting screw mechanism 12 comprises an upper protection cylinder 121 and two groups of adjusting inner threaded seats 122 screwed on the upper protection cylinder 121.

[0070] The upper adjusting inner threaded seat 122 is located at the lower end of the upper connecting ring seat 1101, and the lower adjusting inner threaded seat 122 is located at the upper end of the lower connecting ring seat 1101.

[0071] In this way, by adjusting the positions of the two groups of adjusting inner threaded seats 122, the distance between the two groups of connecting ring seats 1101 can be changed, and then the up and down length of the intermediate reinforcing framework 11 can be changed.

[0072] And after the positions of the two groups of adjusting inner threaded seats 122 are adjusted so that the adjusting inner threaded seats 122 are no longer tightly attached to the corresponding connecting ring seats 1101, the upper protection cylinder 121 can be screwed to the top outer side of the bottom connecting cylinder 801 by rotating in the middle part of the intermediate reinforcing framework 11 (as shown in Figure 13 ).

[0073] The application also provides a construction method of the onshore wind power prestressed anchor bolt wind turbine foundation, and specifically comprises the following steps:

[0074] S1, the bottom framework mechanism is placed on the wiring pipe 5, so that the wiring pipe 5 extends out from the middle part of the bottom framework mechanism, and the guide wire 7 extending upwards in the wiring pipe 5 is fixed by the auxiliary positioning mechanism 6;

[0075] S2, the support seat 1 is placed on the top of the bottom framework mechanism, the auxiliary positioning mechanism 6 and the guide wire 7 in the inside of the auxiliary positioning mechanism 6 extend out through the support seat 1, and a plurality of groups of vertical steel bars 10 are connected to the support seat 1;

[0076] S3. Connecting clip 8 covers the outside of auxiliary positioning mechanism 6, and the bottom of connecting clip 8 extends into cable conduit 5. Nut 9 is tightened so that support base 1 and cable conduit 5 are connected and fixed through connecting clip 8.

[0077] S4. The auxiliary positioning mechanism 6 extends into the adjusting screw mechanism 12 and assembles the intermediate reinforcing frame 11 with several sets of vertical steel bars 10. The bottom of the adjusting screw mechanism 12 is screwed to the top outside of the connecting clip 8, so that the wire 7 inside the auxiliary positioning mechanism 6 passes through the adjusting screw mechanism 12 and extends out.

[0078] Specifically, in use, the cable conduit 5 is placed in the ground pit, and the bottom frame mechanism sits on the cable conduit 5, so that the cable conduit 5 extends through the middle of the bottom frame mechanism;

[0079] The square frame 3 sits on the upper end of the conduit 5, and the conduit 5 passes through the front and rear sets of support frames 4. The lower end of the corresponding vertical steel bar 10 passes through the support base 1 and is inserted into the square frame 3 and the support frame 4.

[0080] The conductor 7 extending upward inside the conduit 5 is fixed by the auxiliary positioning mechanism 6. That is, the conductor 7 extends upward through the outlet hole 502 and the through hole 101 and then passes through the middle of the rubber ring seat 601. This allows the conductor 7 to extend vertically upward from the ground pit. After the wind turbine tower of the onshore wind power is installed at the top of the prestressed anchor bolt wind turbine foundation, the conductor 7 can easily enter the wind turbine tower.

[0081] The support base 1 is placed on top of the bottom frame mechanism. The auxiliary positioning mechanism 6 and the wire 7 inside the auxiliary positioning mechanism 6 pass through and extend out of the support base 1. Several sets of vertical steel bars 10 are connected to the support base 1. The lower end of the corresponding vertical steel bar 10 on the support base 1 passes through the support base 1 and is inserted into the square frame 3 and the support frame 4.

[0082] The connecting clip 8 covers the outside of the auxiliary positioning mechanism 6. The bottom of the connecting clip 8 extends into the cable tray 5, and the nut 9 is tightened, so that the support base 1 and the cable tray 5 are connected and fixed by the connecting clip 8. That is, after the lower end of the bottom connecting cylinder 801 extends into the cable tray 501 inside the cable tray 5 through the through hole 101 and the cable outlet hole 502, the rubber ring 802 sits on the upper end of the cable tray 5, so that the rubber ring 802 is no longer fitted on the top of the rotating block 803. At this time, under the elastic force of the arc-shaped elastic metal plate 806 on the rotating block 803, the rotating block 803 rotates and opens around the pin 805 as the center (as shown). Figure 11 (as shown);

[0083] After the nut 9 is locked on the upper outer side of the bottom connecting cylinder 801, the nut 9 is clamped on the upper end of the support base 1, and the rotating clamping block 803 is clamped on the top of the wiring groove 501 (as shown in Figure 12

[0084] The auxiliary positioning mechanism 6 extends into the adjusting screw cylinder mechanism 12, and assembles the intermediate reinforcing framework 11 and the plurality of groups of vertical steel bars 10. The sleeve connecting cylinder 1103 is sleeved on the vertical steel bars 10, and the adjusting screw cylinder mechanism 12 is screwed on the top outer side of the connecting clamping piece 8, so that the wires 7 in the auxiliary positioning mechanism 6 extend out through the adjusting screw cylinder mechanism 12.

[0085] Then, the concrete is poured into the ground pit, so that the concrete completely covers the support base 1, the bottom protection framework 2, the bottom framework mechanism, the wiring pipe 5, the auxiliary positioning mechanism 6, the adjusting screw cylinder mechanism 12, the intermediate reinforcing framework 11, the vertical steel bars 10, etc. After the concrete is cured, the vertical steel bars 10, the upper protection cylinder 121 and the wires 7 extend out of the concrete.

[0086] After the flange at the bottom of the fan tower base penetrates through the vertical steel bars 10, the stainless steel nut is locked on the top of the vertical steel bars 10, so as to fix the fan tower base. The upper protection cylinder 121 extends into the middle of the fan tower base, and the wires 7 are connected with the distribution box at the side of the bottom of the fan tower base.

[0087] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.​

Claims

1. A land-based wind power pre-stressed anchor wind turbine foundation comprising a support base, characterized in that: The lower end of the support seat is provided with a bottom framework mechanism, a wire routing pipe is penetrated in the middle of the bottom framework mechanism, an auxiliary positioning mechanism is provided on the wire routing pipe and extends out of the support seat, and the wires extending upward in the wire routing pipe are fixed through the auxiliary positioning mechanism; A connecting clamp is provided in the middle of the support seat and covers the outer side of the auxiliary positioning mechanism, the bottom of the connecting clamp extends into the wire routing pipe, and after the nut on the connecting clamp is locked, the support seat and the wire routing pipe are connected and fixed through the connecting clamp; A plurality of groups of vertical steel bars in a circular shape and equidistantly distributed are provided on the support seat, a middle reinforcing framework is fixed between the plurality of groups of vertical steel bars, an adjusting screw mechanism is fixed in the middle of the middle reinforcing framework, the bottom of the adjusting screw mechanism is screwed to the top outer side of the connecting clamp, the auxiliary positioning mechanism extends into the adjusting screw mechanism, and the wires in the auxiliary positioning mechanism penetrate and extend out through the adjusting screw mechanism; The adjusting screw mechanism is used for adjusting the length of the middle reinforcing framework and protecting the wires.

2. The pre-stressed anchor bolt foundation for onshore wind turbine according to claim 1, characterized in that: The bottom framework mechanism comprises a square framework fixed at the lower end of the support seat, support frameworks symmetrically connected at the front and back of the lower end of the square framework, and a bottom protection framework connected at the side edges of the lower end of the support seat; The square framework is located in the bottom protection framework, and the bottom protection framework comprises vertical short bars fixed at the side edges of the lower end of the support seat at equal intervals and side edge stirrups fixed at the outer sides of the plurality of groups of vertical short bars.

3. A pre-stressed anchor bolt foundation for onshore wind turbines according to claim 2, characterized in that: The square framework is located on the upper end of the wire routing pipe, the wire routing pipe penetrates between the front and back two groups of support frameworks, and the lower ends of the corresponding vertical steel bars penetrate the support seat and are inserted into the square framework and the support frameworks.

4. The pre-stressed anchor bolt foundation for onshore wind turbine according to claim 1, characterized in that: A wire outlet hole is provided in the middle of the upper end of the wire routing pipe, a penetration hole is provided in the middle of the upper end of the support seat, the diameter of the wire outlet hole is smaller than the diameter of the penetration hole; The auxiliary positioning mechanism comprises two groups of vertical columns and a plurality of groups of rubber ring seats penetrated on the two groups of vertical columns, and the two groups of vertical columns penetrate and extend upward through the wire outlet hole and the penetration hole; The plurality of groups of rubber ring seats are arranged at equal intervals upward and downward, and the wires penetrate and extend upward through the wire outlet hole and the penetration hole and then penetrate out through the middle of the rubber ring seat.

5. A pre-stressed anchor bolt foundation for onshore wind turbines according to claim 4, characterized in that: The connecting clamp comprises a bottom connecting cylinder, rotating clamping blocks movably connected by pin shafts in the slots at the two sides of the lower part of the bottom connecting cylinder, an arc-shaped elastic metal plate fixed in the slots, and a rubber ring sleeved on the outer side of the bottom connecting cylinder; The outer diameter of the rubber ring is smaller than the diameter of the penetration hole and larger than the diameter of the wire outlet hole; The rotating clamping blocks rotate to the inside of the slots with the pin shafts at the bottoms of the rotating clamping blocks as the centers, the rubber ring is sleeved on the top of the rotating clamping blocks, the inner wall of the rotating clamping blocks is tightly attached to the arc-shaped elastic metal plate, and the rotating clamping blocks are fixed in the slots.

6. A pre-stressed anchor bolt foundation for onshore wind turbines according to claim 5, characterized in that: The bottom connecting cylinder covers the outer side of the auxiliary positioning mechanism, the bottom connecting cylinder extends into the wire routing groove in the wire routing pipe through the penetration hole and the wire outlet hole in sequence, and the rubber ring is located on the upper end of the wire routing pipe, so that the rubber ring is no longer sleeved on the top of the rotating clamping blocks, the rotating clamping blocks rotate and open with the pin shafts as the centers under the elastic force of the arc-shaped elastic metal plate on the rotating clamping blocks, and the nut on the upper part of the bottom connecting cylinder is locked, so that the nut is clamped on the upper end of the support seat and the rotating clamping blocks are clamped on the top of the wire routing groove.

7. A pre-stressed anchor bolt foundation for onshore wind turbines according to claim 5, characterized in that: The adjusting screw cylinder mechanism comprises an upper protection cylinder and two groups of adjusting inner threaded seats screwed on the upper protection cylinder; The intermediate reinforcing framework comprises two groups of connecting ring seats sleeved on the upper protection cylinder, a sleeving cylinder fixed by a plurality of groups of connecting arms on the side edges of the connecting ring seats, and two groups of vertical stirrups connected between the corresponding connecting arms; The sleeving cylinder is sleeved on the vertical steel bars; The upper adjusting inner threaded seat is located at the lower end of the upper connecting ring seat, and the lower adjusting inner threaded seat is located at the upper end of the lower connecting ring seat; The upper protection cylinder is sleeved outside the auxiliary positioning mechanism, and the bottom of the upper protection cylinder is screwed outside the top of the bottom connecting cylinder.

8. A pre-stressed anchor bolt foundation for onshore wind turbines according to claim 7, characterized in that: A plurality of groups of inner annular stirrups distributed at equal intervals upward and downward are fixed between the inner vertical stirrups, a plurality of groups of outer annular stirrups distributed at equal intervals upward and downward are fixed between the outer vertical stirrups, and the inner annular stirrups and the corresponding outer annular stirrups are distributed upward and downward in a staggered manner.

9. A method for constructing the land-based wind power pre-stressed anchor bolt wind turbine foundation according to any one of claims 1-8, characterized in that: Specifically, the method comprises the following steps: S1, the bottom framework mechanism is placed on the wiring pipe, so that the wiring pipe penetrates and extends out from the middle of the bottom framework mechanism, the wires extending upward in the wiring pipe are fixed by the auxiliary positioning mechanism; S2, the support seat is placed on the top of the bottom framework mechanism, the auxiliary positioning mechanism and the wires inside the auxiliary positioning mechanism penetrate and extend out of the support seat, and the plurality of groups of vertical steel bars are connected to the support seat; S3, the connecting clamp is covered outside the auxiliary positioning mechanism, the bottom of the connecting clamp extends into the wiring pipe, and the nut is locked, so that the support seat and the wiring pipe are connected and fixed by the connecting clamp; S4, the auxiliary positioning mechanism is inserted into the adjusting screw cylinder mechanism, and the intermediate reinforcing framework is assembled with the plurality of groups of vertical steel bars, the bottom of the adjusting screw cylinder mechanism is screwed outside the top of the connecting clamp, so that the wires inside the auxiliary positioning mechanism penetrate and extend out through the adjusting screw cylinder mechanism.

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