High-bearing-capacity root knot inventory pile for wind power plant

Abstract

The invention relates to the technical field of wind power plant foundation piles, in particular to a high-bearing-capacity root knot inventory pile for a wind power plant. The problem that before a steel bar is connected with a disc, a threaded head needs to be additionally installed at the end of the steel bar, and the workload of early-stage preparation work of materials is high is mainly solved. Comprising a fixing frame, the fixing frame is fixedly connected with at least two fixing rings, the fixing rings are provided with installing holes distributed in the circumferential direction, evenly-distributed fixing clamping blocks are fixedly connected into the installing holes, the installing holes are connected with deformed steel bars in a sliding mode, and the fixing clamping blocks are used for limiting upper transverse ribs of the deformed steel bars. The installation holes and the fixing clamping blocks are used for replacing traditional threaded bolts to fix the deformed steel bars, a threaded head does not need to be additionally installed for the deformed steel bars, the workload and working time of early-stage preparation work during installation of the root knot inventory pile are saved, the speed of assembling the fixing rings and the deformed steel bars together is increased, and the installation efficiency of the root knot inventory pile is improved. And the construction speed of the wind power plant is increased.

Description

Technical Field

[0001] The invention relates to the technical field of wind farm foundation piles, and in particular to a high-bearing-capacity root-knot pile for a wind farm. Background Art

[0002] Wind power generation equipment is huge in size, so it is usually necessary to install solid foundation piles. Among them, the root-knot pile is a kind of wind power foundation pile with high bearing capacity. The existing root-knot pile is usually cast by reinforced concrete, and it is necessary to use steel bars (usually threaded steel bars with strong bonding force with concrete) to splice the overall frame of the root-knot pile before casting. There are usually multiple discs in the middle of the existing root-knot pile for connecting steel bars on all sides. The ends of the steel bars connected to the discs need to be welded with threaded heads in advance. The steel bars are connected to the threaded holes on the discs through the threaded heads at the ends, thereby improving the comprehensive mechanical properties of the overall steel bar frame. However, since the ends of each steel bar need to be manually welded with threaded heads in sequence, this will undoubtedly increase the workload of the preliminary material preparation work, resulting in the installation steps of the overall frame not being concise enough, affecting the overall progress of the wind farm construction. Summary of the invention

[0003] In order to overcome the disadvantage that before the existing steel bars are connected to the discs, additional threaded heads need to be installed at the ends of the steel bars, resulting in a high workload for preliminary material preparation, the present invention provides a high-bearing-capacity root-knotted pile for a wind farm.

[0004] The technical solution is: a high-bearing-capacity root-knot pile for a wind farm, comprising a fixing frame, the fixing frame is fixed with at least two fixing rings, the fixing ring is provided with circumferentially distributed mounting holes, the mounting holes are fixed with evenly distributed fixing blocks, the mounting holes are slidably connected with threaded steel bars, the fixing blocks are used to limit the upper transverse ribs of the threaded steel bars, the fixing ring is provided with a fixing mechanism for fixing adjacent threaded steel bars to adjacent fixing rings, and the threaded steel is provided with an anchoring mechanism for increasing the bearing capacity of the fixing ring.

[0005] Further description, the fixing mechanism includes an extrusion ring, which is slidably connected in the fixing ring, and the extrusion ring is provided with extrusion grooves evenly distributed circumferentially, the extrusion grooves are aligned with the adjacent threaded steel bars, and a driving assembly is provided on the extrusion ring.

[0006] It is further explained that the extrusion groove is composed of a horizontal groove, an inclined groove and a vertical groove, and the horizontal groove, the inclined groove and the vertical groove are respectively used to extrude the threaded steel bars in different bending states.

[0007] Further description, the drive assembly includes a threaded rod, the threaded rod is rotatably connected to the extrusion ring, the fixing ring is fixed with a mounting rod, the mounting rod is installed with a reduction gear box, the threaded rod is detachably connected to the output shaft of the reduction gear box, the threaded rod is threadedly connected to the fixing ring, and the input shaft of the reduction gear box is fixed with a drive interface.

[0008] It is further explained that the anchoring mechanism includes a plurality of anchor rods, all of which are crossed in pairs, and the anchor rods are installed between the threaded steel bars. The anchor rods are provided with friction components for increasing the friction between themselves and the hole wall.

[0009] It is further explained that the anchoring mechanism includes a plurality of anchor rods, all of which are crossed in pairs, and the anchor rods are installed between the threaded steel bars. The anchor rods are provided with friction components for increasing the friction between themselves and the hole wall.

[0010] It is further explained that a semi-arc ring is fixedly connected at the intersection of the anchor rod and the adjacent anchor rod, and the two adjacent semi-arc rings limit each other.

[0011] Further description, the friction assembly includes a plurality of circumferentially distributed auxiliary fixing parts, the angle between the auxiliary fixing parts and the axis of the anchor rod is less than 90°, and the auxiliary fixing parts are inclined upward, the auxiliary fixing parts include a flexible part and a fixed part, the flexible part is located at the contact point between the auxiliary fixing parts and the anchor rod, and the fixed part is used to provide supporting force to the flexible part.

[0012] Further description, it also includes a locking assembly arranged on the extrusion ring, the locking assembly is used to assist the extrusion ring in locking the threaded steel bent to a vertical state, the locking assembly includes a locking ring, the locking ring is rotatably connected to the extrusion ring, the locking ring is fixed with circumferentially evenly distributed limiting parts, the limiting parts are used to limit the bent threaded steel, and the locking ring is fixed with an operating rod.

[0013] It is further explained that the fixing ring is fixedly connected with guide blocks which are evenly distributed in the circumferential direction, and the guide blocks are used to limit the minimum bending curvature of the adjacent threaded steel bars.

[0014] The beneficial effects of the present invention are as follows: the present invention fixes the threaded steel bar by replacing the traditional threaded bolts with the mounting holes and the fixing blocks, without the need to install the threaded heads for the threaded steel bar additionally, thereby saving the workload and working time of the preliminary preparation work when installing the root piles, and increasing the speed of assembling the fixing ring and the threaded steel bar together, thereby increasing the speed of wind farm construction.

[0015] The present invention uses an extrusion ring to extrude the threaded steel bar to cause deformation, thereby locking and fixing the threaded steel bar, improving the fixing efficiency of the threaded steel bar, increasing the connection strength between the threaded steel bar and the fixing ring, and thus increasing the overall stability of the root-knot pile.

[0016] The present invention increases the connection strength between the anchor rod and the underground rock by installing a semi-arc ring and an auxiliary fixing piece on the anchor rod, thereby improving the pull-out resistance of the device and further improving the bearing capacity of the device.

[0017] The present invention further fixes the deformed threaded steel by means of a limiting piece, thereby reducing the difficulty of workers in assembling the threaded steel. Meanwhile, the threaded steel is guided to deform by means of a guide block, so that the deformed threaded steel still maintains its own mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing ring, threaded steel and extrusion ring of the present invention; Figure 3 is a cross-sectional view of a fixing ring of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing ring, the mounting hole and the fixing block of the present invention; Figure 5 It is a three-dimensional structural cross-sectional view of the fixing ring and the extrusion ring of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the threaded steel bar and the locking ring of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the extrusion ring, the extrusion groove and the fixing block of the present invention; Figure 8 It is a three-dimensional structural cross-sectional view of the extrusion ring and the locking ring of the present invention; Fig. 9 For the present invention Figure 1 The enlarged view of point A in the middle; Fig.10 It is a schematic diagram of the three-dimensional structure of the anchor rod, the semi-arc ring and the auxiliary fixing member of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the anchor rod, the auxiliary fixing member and the flexible part of the present invention.

[0019] Figure numerals: 1: fixing frame, 2: fixing ring, 21: mounting hole, 22: fixing block, 3: threaded steel, 4: extrusion ring, 41: extrusion groove, 411: horizontal groove, 412: inclined groove, 413: vertical groove, 42: fixing block, 5: threaded rod, 51: mounting rod, 6: reduction gear box, 61: driving interface, 7: locking ring, 71: limit member, 72: operating rod, 73: guide block, 8: anchor rod, 81: semi-arc ring, 9: auxiliary fixing member, 91: flexible part, 92: fixed part. DETAILED DESCRIPTION

[0020] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0021] A high-load-bearing wind farm root pile, such as Figure 1-Figure 6 As shown, it includes a fixing frame 1, the fixing frame 1 is fixed with at least two fixing rings 2, the fixing ring 2 is provided with circumferentially distributed mounting holes 21, the mounting holes 21 are fixed with evenly distributed fixing blocks 22, the mounting holes 21 are slidably connected with threaded steel bars 3, the fixing blocks 22 are used to limit the transverse ribs on the threaded steel bars 3, a fixing mechanism for fixing adjacent threaded steel bars 3 on adjacent fixing rings 2 is provided in the fixing ring 2, and an anchoring mechanism for increasing the bearing capacity of the fixing ring 2 is provided on the threaded steel bars 3.

[0022] The above scheme aims to address the problem that before the existing steel bars are connected to the disc, it is necessary to additionally install a threaded head at the end of the steel bar, which results in a high workload for the preliminary material preparation work. In this scheme, fine-rolled threaded steel bars without longitudinal ribs are mainly used. The fixing ring 2 can be a complete circular ring or can be composed of two semi-rings fixed to each other. The fixing ring 2 and the fixing frame 1 can be assembled in advance or assembled on site. The diameter of the mounting hole 21 is larger than the maximum outer diameter of the threaded steel bar 3 (i.e., including the diameter of the threaded section). The fixing blocks 22 in the mounting hole 21 are divided into two rows, upper and lower. The distance between the two rows of fixing blocks 22 in the vertical direction is equal to the minimum outer diameter of the threaded steel bar 3. The distance between two adjacent fixing blocks 22 on the same horizontal plane is equal to the width of the transverse rib on the threaded steel bar 3. The fixing blocks 22 in the mounting hole 21 are used to limit the adjacent threaded steel bars 3 from being pulled out of the mounting hole 21 due to force, and are mainly used to pre-fix the ends of the threaded steel bars 3.

[0023] Further explanation, such as Figure 3-Figure 5 , Figure 7 and Figure 8As shown, the fixing mechanism includes an extrusion ring 4, which is slidably connected to the fixing ring 2, and is provided with extrusion grooves 41 evenly distributed circumferentially, the extrusion grooves 41 are aligned with the adjacent threaded steel bars 3, and a driving assembly is provided on the extrusion ring 4.

[0024] Further explanation, such as Figure 7 and Figure 8 As shown, the extrusion groove 41 is composed of a horizontal groove 411, an inclined groove 412 and a vertical groove 413, and the horizontal groove 411, the inclined groove 412 and the vertical groove 413 are respectively used to extrude the threaded steel bars 3 in different bending states.

[0025] Further explanation, such as Figure 5 As shown, evenly distributed fixing blocks 42 are arranged in the horizontal groove 411 of the extrusion groove 41 , and the fixing blocks 42 are in extrusion contact with the adjacent threaded steel bars 3 .

[0026] In the above scheme, a specific fixing mechanism for fixing the ends of adjacent threaded steel bars 3 on adjacent fixing rings 2 is proposed, the number of extrusion grooves 41 on the extrusion ring 4 is equal to the number of mounting holes 21 on the adjacent fixing rings 2, and the extrusion grooves 41 correspond to the mounting holes 21 one by one. The initial state is as follows Figure 5 and Figure 6 As shown, the extrusion ring 4 is located above the adjacent mounting hole 21, and the arrangement of the fixed block 42 in the extrusion groove 41 is the same as the arrangement of the upper row of fixed blocks 22 in the adjacent mounting hole 21. Therefore, when the upper transverse rib of the threaded steel bar 3 can be inserted between two adjacent fixed blocks 22 in the mounting hole 21, the upper transverse rib of the threaded steel bar 3 is synchronously inserted between two adjacent fixed blocks 42 on the adjacent extrusion groove 41. The fixed block 42 is used to directly extrude the end of the threaded steel bar 3, thereby increasing the force area between the two when the extrusion ring 4 extrude the end of the threaded steel bar 3 and bends it. The horizontal groove 411 of the extrusion groove 41 is used to extrude the end of the threaded steel bar 3 in a horizontal state, the inclined groove 412 of the extrusion groove 41 is used to extrude the end of the threaded steel bar 3 in an inclined state, and the vertical groove 413 of the extrusion groove 41 is used to extrude the end of the threaded steel bar 3 to a vertical state and fix the threaded steel bar 3.

[0027] Further explanation, such as Figure 7 and Figure 8 As shown, the driving assembly includes a threaded rod 5, which is rotatably connected to the extrusion ring 4, the fixed ring 2 is fixedly connected with a mounting rod 51, the mounting rod 51 is installed with a reduction box 6, the threaded rod 5 is detachably connected to the output shaft of the reduction box 6, the threaded rod 5 is threadedly connected to the fixed ring 2, and the input shaft of the reduction box 6 is fixedly connected with a driving interface 61.

[0028] In the above scheme, the reduction box 6 in the drive assembly can be removed from the mounting rod 51, and two drive assemblies are arranged on a fixed ring 2, so at least two reduction boxes 6 are required for the two fixed rings 2. The reduction box 6 is a high-ratio reduction box 6, which can be a gear reduction box 6 or a worm gear reduction box 6. The drive interface 61 is a universal interface, which can be connected to an external hydraulic motor or a high-torque device, and is used to provide power to the extrusion ring 4 to bend the end of the threaded steel bar 3 downward through an external power. In this scheme, a hydraulic motor is used to provide power (not shown in the figure). The reduction box 6 and the hydraulic motor that provides power to it need to be removed from the fixed ring 2 after use, thereby saving the device cost and improving the economic benefit of the device.

[0029] The working process is as follows: before the staff prepares to install the device, they first place the fixing frame 1 and the fixing ring 2 in the middle of the site, and then the staff prepares to connect multiple threaded steel bars 3 to the fixing ring 2 in sequence. The staff first rotates the two rows of transverse ribs on the threaded steel bars 3 to a horizontal state, and then directly inserts the end of the threaded steel bars 3 into a mounting hole 21. When the threaded steel bars 3 are inserted into the inner side of the extrusion ring 4, the staff stops inserting the threaded steel bars 3 and controls the rotation of the threaded steel bars 3. At this time, if the transverse ribs on the threaded steel bars 3 are aligned with the gaps between the two adjacent fixing blocks 22, the staff rotates the threaded steel bars 3 90° so that the transverse ribs on the threaded steel bars 3 are screwed into the gaps between all the fixing blocks 22 on the mounting hole 21, and the transverse ribs on the threaded steel bars 3 located on the lower side of the horizontal groove 411 of the extrusion groove 41 are synchronously screwed into the gaps between the two adjacent fixing blocks 42. The threaded steel bars 3 are fixed by the fixing blocks 22. When the threaded steel bars 3 are subjected to a force dragging out of the mounting hole 21, they cannot slide outward from the mounting hole 21.

[0030] If the upper transverse rib of the threaded steel bar 3 is not aligned with the gap between two adjacent fixed blocks 22 when the staff rotates the threaded steel bar 3, the upper transverse rib of the threaded steel bar 3 is squeezed by the adjacent fixed blocks 22 and cannot be rotated. The staff controls the threaded steel bar 3 to move forward and backward by an appropriate distance and repeats the above operation until the threaded steel bar 3 is rotated 90° and the fixed blocks 22 complete the fixation of the end of the threaded steel bar 3.

[0031] The staff repeats the above steps until the ends of all the threaded steel bars 3 are inserted into the corresponding mounting holes 21 on the lower fixing ring 2. Then the staff installs the two reduction gearboxes 6 on the two mounting rods 51 respectively, and then installs the two hydraulic motors on the two drive interfaces 61. The staff starts the two hydraulic motors at the same time. The two hydraulic motors drive the adjacent drive interfaces 61 to rotate respectively. The reduction gearbox 6 transmits the power of the drive interface 61 on it to the threaded rod 5. The threaded rod 5 starts to rotate under the force. During the rotation of the threaded rod 5, it moves downward through the thread and squeezes the extrusion ring 4 to move downward together. The extrusion ring 4 limits the left and right swinging of the end of the threaded steel bar 3 through the extrusion groove 41 thereon, and at the same time drives the extrusion groove 41 to squeeze the end of the threaded steel bar 3 downward together.

[0032] When the threaded steel bar 3 used is made of a harder material with better bending resistance, the threaded steel bar 3 is only slightly deformed. At this time, the extrusion ring 4 locks and fixes the end of the threaded steel bar 3 by squeezing the end of the threaded steel bar 3 during the downward movement.

[0033] When the bending resistance of the threaded steel bar 3 used is weak, the end of the threaded steel bar 3 is squeezed by the extrusion ring 4 and the extrusion groove 41, and gradually bends downward. When the end of the threaded steel bar 3 is deformed, the end of the threaded steel bar 3 is gradually bent to an inclined state. At this time, the contact area between the end of the threaded steel bar 3 and the horizontal groove 411 of the adjacent extrusion groove 41 on the extrusion ring 4 gradually decreases, but the contact area between the end of the threaded steel bar 3 and the inclined groove 412 gradually increases. At this time, the inclined groove 412 squeezes the end of the threaded steel bar 3 to continue to bend downward until the end of the threaded steel bar 3 is bent 90°. At this time, the end of the threaded steel bar 3 enters the adjacent vertical groove 413, and the staff turns off the hydraulic motor and removes the reduction box 6 and the hydraulic motor from the mounting rod 51. At this time, the end of the threaded steel bar 3 is limited by the adjacent vertical groove 413 and the mounting hole 21, and is completely locked in the fixing ring 2. After pouring cement, the fixing ring 2 and the surrounding threaded steel bars 3 will form a firm meridian, thereby providing a stronger physical property for the cement base.

[0034] After the staff locks the ends of the lower fixing ring 2 and the surrounding threaded steel bars 3, they install the threaded steel bars 3 in other positions and the upper fixing ring 2, and gradually splice the threaded steel bars 3 into Figure 1 As shown, follow the same steps to lock and fix the upper fixing ring 2 and the adjacent end of the threaded steel bar 3 together. After completing the above steps, the staff reserves the holes required for the anchoring mechanism in the threaded steel bar 3, and then pours cement into the area where the threaded steel bar 3 is located. At the same time, the cement is cured according to the existing procedures. When the cement is air-dried and firm, the staff installs the anchoring mechanism into the reserved holes to complete the overall installation of the device.

[0035] Further explanation, such as Figure 1 , Fig. 9 and Fig.10 As shown, the anchoring mechanism includes a plurality of anchor rods 8, all of which are crossed in pairs, and the anchor rods 8 are installed between the threaded steel bars 3. The anchor rods 8 are provided with friction components for increasing the friction between themselves and the hole wall.

[0036] Further explanation, such as Fig. 9 and Fig.10 As shown, a semi-arc ring 81 is fixedly connected at the intersection of the anchor rod 8 and the adjacent anchor rod 8, and two adjacent semi-arc rings 81 limit each other.

[0037] Further explanation, such as Figure 9-11 As shown, the friction assembly includes a plurality of circumferentially distributed auxiliary fixing members 9, the angle between the auxiliary fixing member 9 and the axis of the anchor rod 8 is less than 90°, and the auxiliary fixing member 9 is inclined upward, and the auxiliary fixing member 9 includes a flexible portion 91 and a fixed portion 92, the flexible portion 91 is located at the contact point between the auxiliary fixing member 9 and the anchor rod 8, and the fixed portion 92 is used to provide support force to the flexible portion 91.

[0038] In the above scheme, the number of groups of anchor rods 8 is determined by actual conditions. For example, when it is necessary to make a larger wind power equipment root pile, more groups of anchor rods 8 need to be buried in the root pile to increase the firmness of the root pile; the semi-arc ring 81 is inclined relative to the anchor rod 8, and the holes reserved in the cement in the above scheme correspond one by one to the required anchor rods 8, and the anchor rods 8 of the same group cross each other at the same height from the ground, the flexible portion 91 is made of flexible metal material (such as aluminum alloy), and the fixed portion 92 and the side of the auxiliary fixing member 9 away from the flexible portion 91 are made of hard metal material (such as hard steel).

[0039] The working process is as follows: after the cement is dried, the staff uses the drilling device to drill downwards through the reserved hole to facilitate the insertion of the anchor rod 8 into the ground. When the staff has drilled all the holes, the staff begins to insert the anchor rod 8 into the drilled hole to Fig.10 Taking the middle component as an example, when inserting the anchor rod 8, the staff rotates the upper semi-arc ring 81 of the anchor rod 8 to the side away from the same group of anchor rods 8 to avoid collision between the two semi-arc rings 81. Then the staff inserts the two anchor rods 8 into the two drilled holes respectively, and makes the heights of the two anchor rods 8 protruding from the reserved holes in the cement equal. Then the staff rotates the two anchor rods 8, and the rotation direction of the two anchor rods 8 is counterclockwise (from a top-down perspective). The anchor rod 8 drives the semi-arc ring 81 to rotate together. After rotating half a circle, the two semi-arc rings 81 gradually cross each other to connect the two anchor rods 8 together. At this time, the staff stops rotating the anchor rod 8.

[0040] When the staff inserts the anchor rod 8, the auxiliary fixing member 9, the flexible portion 91 and the fixed portion 92 on the anchor rod 8 do not contact the hole wall, but at this time the gap between the auxiliary fixing member 9 away from the adjacent flexible portion 91 and the hole wall is the smallest. When the staff stops rotating the anchor rod 8, the staff injects cement into the borehole, and the cement flows deep into the borehole. At this time, the auxiliary fixing member 9 and the flexible portion 91 are gradually bent downward under the drive of the cement, and the auxiliary fixing member 9 contacts the hole wall and gradually moves downward under the drive of the flexible portion 91 until the auxiliary fixing member 9 and the flexible portion 91 contact the fixed portion 92. The auxiliary fixing member 9 and the flexible portion 91 stop deforming and moving under the support of the fixed portion 92, and the auxiliary fixing member 9 abuts against the hole wall. When the cement fills the borehole, the auxiliary fixing member 9 abuts against the hole wall, increasing the friction and extrusion force between the cement and the hole wall, thereby increasing the firmness between the anchor rod 8 and the hole wall, and increasing the pull-out resistance of the device.

[0041] When the device is in use and the wind power equipment is affected by strong winds or even impacts and is subjected to an upward pulling force, at this time, because the semi-arc ring 81 between the two connected anchor rods 8 is fixed together, the strong wind not only needs to overcome the fixing force between the auxiliary fixing part 9 and the hole wall, but also needs to overcome the fixing force between the two anchor rods 8, thereby increasing the fixing force of the anchor rod 8 on the device, and further increasing the overall bearing capacity of the root-knot pile.

[0042] Further explanation, such as Figure 4-Figure 6 and Figure 8 As shown, it also includes a locking assembly arranged on the extrusion ring 4, the locking assembly is used to assist the extrusion ring 4 to lock the threaded steel 3 bent to a vertical state, the locking assembly includes a locking ring 7, the locking ring 7 is rotatably connected to the extrusion ring 4, the locking ring 7 is fixedly connected with a circumferentially uniformly distributed limiting member 71, the limiting member 71 is used to limit the bent threaded steel 3, and the locking ring 7 is fixedly connected with an operating rod 72.

[0043] Further explanation, such as Figure 4-Figure 6 As shown, the fixing ring 2 is fixedly connected with guide blocks 73 evenly distributed in the circumferential direction, and the guide blocks 73 are used to limit the minimum bending curvature of adjacent threaded steel bars 3 .

[0044] In the above scheme, the limit member 71 is made of flexible material. By squeezing the limit member 71 into the gap between the end of the vertically-standing threaded steel bar 3 and the extrusion groove 41, the limit member 71 fixes the upper side of the bent portion of the threaded steel bar 3, thereby preventing the end of the threaded steel bar 3 from shaking after being subjected to force, thereby increasing the difficulty for the staff to assemble the end of the threaded steel bar 3.

[0045] The working process is as follows: when the end of the threaded steel bar 3 is squeezed and bent, the end of the threaded steel bar 3 is limited by the guide block 73, and is bent downward along the outer side of the guide block 73. The guide block 73 limits the curvature of the deformation of the end of the threaded steel bar 3 to prevent the curvature of the bent portion of the threaded steel bar 3 from being too small when the threaded steel bar 3 is bent, thereby affecting its own mechanical properties. When the threaded steel bar 3 is bent, the threaded steel bar 3 is limited by the adjacent vertical groove 413 and the mounting hole 21, because there is always a certain gap between the upper part of the bent end of the threaded steel bar 3 and the vertical groove 413 (not completely close), so when the staff When other threaded steel bars 3 are used to fix the outer side of the threaded steel bars 3 connected to the fixing ring 2, the threaded steel bars 3 in the fixing ring 2 are easily shaken by the force from the outer side, which is not conducive to the staff's operation on the threaded steel bars 3. Therefore, after the staff has bent the end of the threaded steel bars 3, they rotate the operating rod 72 to make the operating rod 72 drive the locking ring 7 and the limiting member 71 to rotate together, and the limiting member 71 gradually squeezes into the gap between the upper side of the threaded steel bars 3 and the extrusion groove 41, so as to limit the threaded steel bars 3 connected to the fixing ring 2 more stably. Then the staff releases the operating rod 72 to install other threaded steel bars 3.

[0046] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A high-bearing-capacity root-knot pile for a wind farm, characterized in that: The invention comprises a fixing frame (1), wherein the fixing frame (1) is fixedly connected with at least two fixing rings (2), the fixing ring (2) is provided with circumferentially distributed mounting holes (21), the mounting holes (21) are fixedly connected with evenly distributed fixing blocks (22), the mounting holes (21) are slidably connected with threaded steel bars (3), the fixing blocks (22) are used to limit the position of the upper transverse ribs of the threaded steel bars (3), the fixing ring (2) is provided with a fixing mechanism for fixing adjacent threaded steel bars (3) to adjacent fixing rings (2), and the threaded steel bars (3) are provided with an anchoring mechanism for increasing the bearing capacity of the fixing ring (2).

2. A high-load bearing root pile for a wind farm according to claim 1, characterized in that: The fixing mechanism comprises an extrusion ring (4), the extrusion ring (4) being slidably connected inside the fixing ring (2), the extrusion ring (4) being provided with extrusion grooves (41) evenly distributed in the circumferential direction, the extrusion grooves (41) being aligned with the adjacent threaded steel bars (3), and a driving assembly being provided on the extrusion ring (4).

3. A high-load bearing root pile for a wind farm according to claim 2, characterized in that: The extrusion groove (41) is composed of a horizontal groove (411), an inclined groove (412) and a vertical groove (413); the horizontal groove (411), the inclined groove (412) and the vertical groove (413) are respectively used to extrude the threaded steel bars (3) in different bending states.

4. A high-load bearing root pile for a wind farm according to claim 3, characterized in that: Evenly distributed fixing blocks (42) are arranged in the horizontal groove (411) of the extrusion groove (41), and the fixing blocks (42) are in extrusion contact with the adjacent threaded steel bars (3).

5. A high-load bearing root pile for a wind farm according to claim 2, characterized in that: The drive assembly comprises a threaded rod (5), the threaded rod (5) being rotatably connected to the extrusion ring (4), the fixing ring (2) being fixedly connected to a mounting rod (51), the mounting rod (51) being installed with a reduction box (6), the threaded rod (5) being detachably connected to an output shaft of the reduction box (6), the threaded rod (5) being threadably connected to the fixing ring (2), and the input shaft of the reduction box (6) being fixedly connected to a drive interface (61).

6. A high-load bearing root pile for a wind farm according to claim 4, characterized in that: The anchoring mechanism comprises a plurality of anchor rods (8), all of the anchor rods (8) are crossed in pairs, the anchor rods (8) are installed between the threaded steel bars (3), and the anchor rods (8) are provided with friction components for increasing the friction between themselves and the hole wall.

7. A high-load bearing root pile for a wind farm according to claim 6, characterized in that: A semi-arc ring (81) is fixedly connected at the intersection of the anchor rod (8) and the adjacent anchor rod (8), and two adjacent semi-arc rings (81) are mutually limited.

8. A high-load bearing root pile for a wind farm according to claim 7, characterized in that: The friction assembly comprises a plurality of circumferentially distributed auxiliary fixing members (9), the angle between the auxiliary fixing member (9) and the axis of the anchor rod (8) being less than 90°, and the auxiliary fixing member (9) being inclined upward, the auxiliary fixing member (9) comprising a flexible portion (91) and a fixed portion (92), the flexible portion (91) being located at a contact point between the auxiliary fixing member (9) and the anchor rod (8), and the fixed portion (92) being used to provide a supporting force to the flexible portion (91).

9. A high-load bearing root pile for a wind farm according to claim 5, characterized in that: The invention also comprises a locking assembly arranged on the extrusion ring (4), the locking assembly being used to assist the extrusion ring (4) in locking the threaded steel bar (3) bent to a vertical state, the locking assembly comprising a locking ring (7), the locking ring (7) being rotatably connected to the extrusion ring (4), the locking ring (7) being fixedly connected with circumferentially evenly distributed limiting members (71), the limiting members (71) being used to limit the bent threaded steel bar (3), and the locking ring (7) being fixedly connected with an operating rod (72).

10. A high-load bearing root pile for a wind farm according to claim 9, characterized in that: The fixing ring (2) is fixedly connected with guide blocks (73) evenly distributed in the circumferential direction, and the guide blocks (73) are used to limit the minimum bending curvature of the adjacent threaded steel bars (3).

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