Fan hub supporting device for blade installation and blade installation method

Abstract

The invention discloses a fan hub supporting device for blade installation and a blade installation method, and particularly relates to the technical field of supporting devices.The fan hub supporting device comprises a base, a plurality of positioning holes are formed in the base, a supporting platform is arranged at the top of the base, a fixing pile is arranged at the top end of the base, and a counterweight assembly is arranged at the outer end of the fixing pile; the counterweight assembly comprises an extension beam, the end, facing the fixed pile, of the extension beam is sleeved with a sleeve, and the end, facing the fixed pile, of the sleeve is fixedly connected with the fixed pile. The acting force of the blades on the supporting device is counteracted through the counterweight assembly, so that the supporting device is reinforced, the supporting device is prevented from toppling over due to the blades, the stability of the supporting device is improved, meanwhile, the size and the supporting area of the supporting device do not need to be increased, and the connecting strength between the supporting device and the ground does not need to be increased; the supporting device can be disassembled and transported more conveniently after being used, and follow-up use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of support devices, and particularly relates to a support device for a wind turbine hub for blade installation and a blade installation method. Background Art

[0002] The wind turbine hub is a key component in a wind power generation unit, mainly used for connecting the blades and the main shaft. During the construction of a wind power generation unit, each component needs to be assembled, and a key step is to install the blades at the outer end of the wind turbine hub.

[0003] Generally, when installing the blades, the wind turbine hub needs to be placed on the support device first. After the blades are installed on the support device, the assembled hub and blades are hoisted to a high place and connected to the main part of the wind power generation unit.

[0004] The support device is connected to the ground. For example, in a support device and method for a wind turbine hub for blade installation disclosed in the prior art with the publication number CN116816606A, during the installation of the blades, since the blades are relatively long, the blades connected to the hub will extend outward from the support device, and the extended blades are suspended without support. Their weight acting on the support device can easily cause the support device to tip over.

[0005] To solve this problem, there are generally two methods in the prior art. One is to increase the support area of the support device to reduce the degree of outward extension of the blades, and the other is to increase the connection strength between the support device and the ground. However, the support device is not disposable but can be used repeatedly. The first method greatly increases the volume and floor area of the support device, making it inconvenient for the disassembly and transportation of the support device. The second method increases the difficulty of disassembling and separating the support device from the ground while increasing the connection strength between the support device and the ground, making it inconvenient to remove the support device after use. Summary of the Invention

[0006] The purpose of the present invention is to provide a support device for a wind turbine hub for blade installation and a blade installation method. By setting a counterweight assembly to offset the acting force of the blades on the support device, the support device is strengthened, avoiding the tipping of the support device caused by the blades. While improving the stability of the support device, there is no need to increase the volume and support area of the support device, nor to increase its connection strength with the ground. The support device can be disassembled and transported more conveniently after use, and subsequent use is more convenient.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A support device for a wind turbine hub for blade installation, including a base, a plurality of positioning holes are opened on the base, a support platform is arranged on the top of the base, a fixing pile is arranged at the top end of the base, and a counterweight assembly is arranged at the outer end of the fixing pile;

[0008] The counterweight assembly includes an extension beam. One end of the extension beam facing the fixed pile is sleeved with a sleeve. One end of the sleeve facing the fixed pile is fixedly connected to the fixed pile. A counterweight water tank is provided at the end of the extension beam away from the fixed pile. An external interface with a sealing cover is fixedly provided at one end of the counterweight water tank. Water is added to or discharged from the counterweight water tank through the external interface. In the daily use state, the sealing cover closes the external interface.

[0009] A U-shaped frame is fixedly provided at the end of the extension beam away from the sleeve. A fixing rod passes through the U-shaped frame. A fixing cap is sleeved on the outer end of the fixing rod through a thread. The U-shaped frame is clamped between the two fixing caps. A plurality of steel cables are fixedly provided at the bottom end of the fixing rod. The bottom ends of the steel cables are fixedly connected to the counterweight water tank. Therefore, the counterweight water tank can be disassembled and separated from the U-shaped frame by disassembling the fixing rod.

[0010] A hydraulic cylinder is provided at the bottom of the sleeve. The two ends of the hydraulic cylinder are respectively connected to the sleeve and the extension beam. Connecting plates are fixedly provided at both ends of the hydraulic cylinder. The two connecting plates are respectively provided at the bottom ends of the sleeve and the extension beam through bolts.

[0011] Furthermore, a sliding plate is movably connected to the top end of the base through an annular guide rail. Thus, the fixed pile can move along a circular track on the top end of the base. The fixed pile is detachably installed on the top end of the sliding plate. A driving component is provided at the outer end of the fixed pile. A plurality of tooth grooves are provided at the outer end of the base.

[0012] Furthermore, the driving component includes a cross plate fixedly provided at the outer end of the fixed pile. A gear is provided at the bottom of the cross plate. The gear meshes with the outer end of the base through the tooth groove. A driving motor for driving the gear to rotate is fixedly provided at the top end of the cross plate.

[0013] Furthermore, two sections of guardrails are fixedly provided at the top end of the support platform. The guardrails protect the safety of construction workers and prevent them from falling from the support platform. A notch is provided at the outer end of the support platform. A ladder is provided at the top of the base. The top end of the ladder extends into the notch and is rotatably connected to the inner wall of the notch through a damping rotating shaft.

[0014] Furthermore, a support plate is provided at the top of the base. Four columns are detachably provided at the bottom end of the support plate. The bottom ends of the columns are detachably connected to the top end of the base. A plurality of pressure sensors are fixedly provided at the top end of the support plate. The pressure sensors are arranged in a ring around the center of the support platform. The top ends of the pressure sensors are in contact with the bottom end of the support platform.

[0015] Furthermore, a cushion plate is provided at the bottom of the support plate. A controller is fixedly provided at the bottom end of the cushion plate. A networking module is fixedly provided at the top end of the fixed pile. The controller is remotely and wirelessly connected to a control center through the networking module. The pressure sensors are arranged at the input end of the controller. The hydraulic cylinder and the driving motor are both arranged at the output end of the controller.

[0016] Furthermore, a through hole penetrating the support plate is provided at the center of the support plate, a fixing block and a plurality of connecting rods are fixedly provided at the top of the pad, and the top of the connecting rods is detachably connected to the bottom of the support plate;

[0017] The fixed block is inlaid with an adjusting ball, which can roll arbitrarily relative to the fixed block. A top column is fixedly provided on the top of the adjusting ball. The top of the top column penetrates the support plate through a through hole and is detachably connected to the bottom of the supporting platform.

[0018] The present invention also includes a blade installation method, which is performed using any of the above-mentioned fan hub support devices for blade installation, and the specific steps are as follows:

[0019] Step 1: Install the support device on a flat ground, place the base on a flat soil ground, and insert a rod-shaped positioning pile into the positioning hole to connect and fix the base to the ground, then assemble the column, support plate, pad and support platform from bottom to top, and finally install the fixing pile on the top of the sliding plate to complete the assembly of the entire support device;

[0020] Step 2: The fan hub on which the blades need to be installed is hoisted to the top of the support platform by the hoisting equipment. Then the relevant construction personnel climb to the top of the support platform by the ladder to install the blades. The bottom of the support platform is connected to the outer end of the adjustment ball through the top column, and the adjustment ball can rotate at will. Therefore, in theory, the support platform can tilt in any direction around the adjustment ball. However, since there are multiple pressure sensors at the bottom of the support platform, the pressure sensors are supported at the bottom of the support platform, which blocks the tilt of the support platform. Therefore, the support platform has a tendency to tilt and rotate, but it cannot actually rotate and tilt.

[0021] Step three: According to the influence caused by the blades, adjust the positions of the fixed pile and the counterweight assembly, control the extension and retraction of the counterweight assembly, adjust the lateral distance between the counterweight water tank and the base, so that the support device is balanced in force, install the counterweight water tank on the extension beam, and then fill the counterweight water tank with water so that the counterweight water tank as a whole has a certain weight, control the driving motor through the controller, and then drive the gear to rotate, the gear engages with the tooth groove, and after it rotates, the gear can roll along the edge of the base and drive the sliding plate to slide along the annular guide rail, so that the fixed pile moves with the sliding plate and drives the counterweight assembly to move synchronously with it, so as to adjust the direction of the counterweight assembly so that the direction of the counterweight assembly is opposite to the direction in which the support device is going to tip over, and when the counterweight assembly moves to the target position, the weight of the counterweight water tank and the water can offset the force of the blades extending outside on the support device, thereby preventing the support device from tipping over;

[0022] Step 4: After the blades are assembled, lift the entire wind turbine hub together with the blades from the support device and connect them to the main body of the wind power generation unit. Subsequently, disassemble the support platform, backing plate, carrier plate, column, and fixed pile from top to bottom in sequence. Finally, disassemble and separate the base from the ground. Thus, the support device completes the installation of the entire blades and the wind turbine hub. Each disassembled part is convenient for transportation and can be reassembled until the next use.

[0023] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0024] 1. By setting a counterweight assembly and filling water into the counterweight water tank, the weight of the counterweight water tank acts on the base, and the acting force of the counterweight water tank on the base is used to offset the acting force of the blades on the support device, thereby strengthening the support device. This can prevent the support device from tipping over caused by the blades. While improving the stability of the support device, there is no need to increase the volume and support area of the support device, nor is it necessary to increase its connection strength with the ground. The support device can be disassembled and transported more conveniently after use, and subsequent use is more convenient.

[0025] 2. The driving assembly can drive the fixed pile and the counterweight assembly to move, thereby adjusting the direction of the counterweight assembly according to the possible tipping direction of the support device, and can also flexibly adjust the acting force of the counterweight water tank according to the acting force of the blades on the support device, so as to more flexibly and accurately offset the acting force of the blades, and the reinforcement effect on the support device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is the front view structure diagram of the present invention;

[0028] Figure 2 It is the rear view structure diagram of the present invention;

[0029] Figure 3 It is the side view cross-sectional view of the support platform and the carrier plate of the present invention;

[0030] Figure 4 It is for the present invention Figure 3 The enlarged view of part A in;

[0031] Figure 5 It is the structure diagram of the carrier plate of the present invention;

[0032] Figure 6It is the upward view structure diagram of the support platform of the present invention;

[0033] Figure 7 It is the structure diagram of the counterweight assembly and the drive assembly of the present invention;

[0034] Figure 8 It is the system diagram of the present invention.

[0035] Explanation of reference numerals:

[0036] 1. Base; 101. Tooth groove; 2. Support platform; 3. Column; 4. Sliding plate; 5. Fixed pile; 6. Drive assembly; 601. Cross plate; 602. Drive motor; 603. Gear;

[0037] 7. Counterweight assembly; 701. Sleeve; 702. Extension beam; 703. Hydraulic cylinder; 704. Counterweight water tank; 8. Ladder; 9. Support plate; 901. Through hole; 10. Controller;

[0038] 11. Lining plate; 1101. Fixed block; 1102. Adjusting ball; 1103. Connecting rod; 1104. Jacking post; 12. Pressure sensor; 13. Networking module. Detailed implementation manners

[0039] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0040] The present invention provides a blade installation wind turbine hub support device and a blade installation method as Figure 1-8 shown. The support device includes a base 1, and a plurality of positioning holes are opened on the base 1. The base 1 is placed on a flat soil ground, and rod-shaped positioning piles are inserted into the positioning holes to connect and fix the base 1 to the ground. A support platform 2 is provided on the top of the base 1. A fixed pile 5 is provided at the top end of the base 1, and a counterweight assembly 7 is provided at the outer end of the fixed pile 5;

[0041] Two sections of guardrails are fixedly provided at the top end of the support platform 2. The guardrails protect the safety of construction workers and prevent them from falling from the support platform 2. A notch is opened at the outer end of the support platform 2. A ladder 8 is provided on the top of the base 1. The top end of the ladder 8 extends into the notch and is rotatably connected to the inner wall of the notch through a damping rotating shaft. When not in use, the bottom end of the ladder 8 can be rotated towards the direction close to the center position of the base 1 to avoid the ladder 8 blocking the movement of the fixed pile 5. The wind turbine hub to be installed with blades is hoisted to the top end of the support platform 2 by a hoisting device, and then relevant construction workers climb to the top end of the support platform 2 through the ladder 8 to carry out the blade installation work.

[0042] A support plate 9 is provided at the top of the base 1. Four columns 3 are detachably provided at the bottom end of the support plate 9. The bottom ends of the columns 3 are detachably connected to the top end of the base 1. A plurality of pressure sensors 12 are fixedly provided at the top end of the support plate 9. The pressure sensors 12 are arranged in a ring around the center of the support platform 2. The top ends of the pressure sensors 12 are in contact with the bottom end of the support platform 2.

[0043] A backing plate 11 is provided at the bottom of the support plate 9. A controller 10 is fixedly provided at the bottom end of the backing plate 11. A networking module 13 is fixedly provided at the top end of the fixed pile 5. The controller 10 is remotely wirelessly connected to a control center through the networking module 13. Specifically, it is connected to a computer in the control center.

[0044] The support device is installed on a flat ground. Then, the columns 3, the support plate 9, the backing plate 11, and the support platform 2 are assembled in sequence from bottom to top. Finally, the fixed pile 5 is installed at the top end of the sliding plate 4, and thus the entire support device is assembled.

[0045] A wind turbine hub is placed at the top end of the support platform 2, and blades are assembled at the outer end of the wind turbine hub. One end of the blade extends to the outside of the support device. Therefore, the weight of the blade is applied to the support platform 2, causing the support platform 2 to tend to rotate and tilt, but no actual tilt occurs.

[0046] In the direction where the support platform 2 has a tendency to tilt, the pressure sensors 12 close to this direction will be subjected to the pressure of the support platform 2. At this time, the entire support device may tip over in this direction. The pressure value is remotely transmitted to the control center through the controller 10 and the networking module 13. Relevant personnel can then understand the direction in which the support device may tip over and the specific force-bearing situation, and take measures accordingly.

[0047] A through hole 901 penetrating the support plate 9 is provided at the central position of the support plate 9. A fixed block 1101 and a plurality of connecting rods 1103 are fixedly provided at the top end of the backing plate 11. The top ends of the connecting rods 1103 are detachably connected to the bottom end of the support plate 9.

[0048] An adjusting ball 1102 is embedded in the fixed block 1101. The adjusting ball 1102 can roll freely relative to the fixed block 1101. A top column 1104 is fixedly provided at the top end of the adjusting ball 1102. The top end of the top column 1104 passes through the support plate 9 through the through hole 901 and is detachably connected to the bottom end of the support platform 2.

[0049] Since the bottom end of the support platform 2 is connected to the outer end of the adjustment ball 1102 through the top column 1104, and the adjustment ball 1102 can rotate freely, theoretically speaking, the support platform 2 can tilt in any direction around the adjustment ball 1102. However, since a plurality of pressure sensors 12 are provided at the bottom end of the support platform 2, and the pressure sensors 12 support the bottom end of the support platform 2, which plays a role in blocking the tilt of the support platform 2, so the support platform 2 has a tendency to tilt and rotate, but actually it cannot rotate and tilt.

[0050] To offset the acting force generated by the blade extending outward, as Figure 1 , 7 , as shown in Figures 7 and 8, the counterweight assembly 7 includes an extension beam 702. One end of the extension beam 702 facing the fixed pile 5 is sleeved with a sleeve 701. One end of the sleeve 701 facing the fixed pile 5 is fixedly connected to the fixed pile 5. A counterweight water tank 704 is provided at the end of the extension beam 702 away from the fixed pile 5. One end of the counterweight water tank 704 is fixedly provided with an outer interface with a sealing cover. Water is added to or discharged from the counterweight water tank 704 through the outer interface. In the daily use state, the sealing cover closes the outer interface;

[0051] A U-shaped frame is fixedly provided at the end of the extension beam 702 away from the sleeve 701. A fixing rod passes through the U-shaped frame. The outer end of the fixing rod is sleeved with a fixing cap through a thread. The U-shaped frame is clamped between the two fixing caps. A plurality of steel cables are fixedly provided at the bottom end of the fixing rod. The bottom ends of the steel cables are fixedly connected to the counterweight water tank 704. Therefore, the counterweight water tank 704 can be disassembled and separated from the U-shaped frame by disassembling the fixing rod.

[0052] A hydraulic cylinder 703 is provided at the bottom of the sleeve 701. Both ends of the hydraulic cylinder 703 are respectively connected to the sleeve 701 and the extension beam 702. Connecting plates are fixedly provided at both ends of the hydraulic cylinder 703. The two connecting plates are respectively provided at the bottom ends of the sleeve 701 and the extension beam 702 through bolts.

[0053] The counterweight water tank 704 is installed on the extension beam 702 so that the counterweight water tank 704 is suspended. Then, water is filled into the counterweight water tank 704 so that the whole counterweight water tank 704 has a certain weight. When the counterweight assembly 7 moves to the target position, the weight of the counterweight water tank 704 and the water pulls the extension beam 702 and the sleeve 701 downward, and then pulls the fixed pile 5. The fixed pile 5 drives the sliding plate 4 and the base 1 accordingly, so that the whole support device has a tendency to tilt towards the side where the counterweight assembly 7 is located. The direction of the counterweight assembly 7 is opposite to the direction of the blade acting force. Therefore, the acting force of the blade extending outside on the support device can be offset, thus avoiding the tipping of the support device;

[0054] Meanwhile, it is also possible to control the telescopic movement of the extension beam 702 in the sleeve 701 through the telescopic movement of the hydraulic cylinder 703, so as to adjust the horizontal distance between the counterweight water tank 704 and the base 1. The larger this distance is, the larger the lever arm of the force exerted by the counterweight water tank 704 on the base 1 will be, and the greater the force that can be offset. Conversely, it will be smaller. In this way, the magnitude of the force exerted by the counterweight water tank 704 can be flexibly adjusted according to the force exerted by the blade on the support device, ensuring that the force exerted by the blade can be more accurately offset, and improving the stability of the support device.

[0055] In this way, while preventing the support device from tipping over, there is no need to increase the volume and support area of the support device, nor is it necessary to increase its connection strength with the ground. After the support device is used, it can be disassembled and transported more conveniently, and subsequent use is more convenient.

[0056] In addition, the counterweight assembly 7 can adjust its own direction according to the possible tipping direction of the support device, and can also adjust the lever arm of the counterweight water tank 704 according to the force exerted by the blade on the support device, more flexibly and accurately offsetting the force exerted by the blade, and having a better reinforcement effect on the support device.

[0057] To adjust the direction of the counterweight assembly 7, as shown in Figure 1 、 7 、8, a sliding plate 4 is movably connected to the top end of the base 1 through an annular guide rail. Therefore, the fixed pile 5 can move along a circular track on the top end of the base 1. The fixed pile 5 is detachably installed on the top end of the sliding plate 4. A driving assembly 6 is provided at the outer end of the fixed pile 5, and a plurality of tooth grooves 101 are formed at the outer end of the base 1.

[0058] The driving assembly 6 includes a cross plate 601 fixedly provided at the outer end of the fixed pile 5. A gear 603 is provided at the bottom of the cross plate 601. The gear 603 meshes with the outer end of the base 1 through the tooth groove 101. A driving motor 602 for driving the gear 603 to rotate is fixedly provided at the top end of the cross plate 601. A pressure sensor 12 is provided at the input end of the controller 10, and the hydraulic cylinder 703 and the driving motor 602 are both provided at the output end of the controller 10.

[0059] By controlling the driving motor 602 through the controller 10, the gear 603 is further driven to rotate. The gear 603 meshes with the tooth groove 101. After it rotates, the gear 603 can roll along the edge of the base 1 and drive the sliding plate 4 to slide along the annular guide rail. The fixed pile 5 thus moves with the sliding plate 4 and drives the counterweight assembly 7 to move synchronously with it, so as to adjust the direction of the counterweight assembly 7, making the direction of the counterweight assembly 7 opposite to the direction in which the support device is about to tip over.

[0060] Only certain exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A fan hub support device for blade installation, comprising a base (1), characterized in that: A supporting platform (2) is provided on the top of the base (1), a fixing pile (5) is provided on the top of the base (1), and a counterweight assembly (7) is provided on the outer end of the fixing pile (5); The counterweight assembly (7) comprises an extension beam (702), one end of the extension beam (702) facing the fixed pile (5) is sleeved with a sleeve (701), one end of the sleeve (701) facing the fixed pile (5) is fixedly connected to the fixed pile (5), and one end of the extension beam (702) away from the fixed pile (5) is provided with a counterweight water tank (704); A hydraulic cylinder (703) is provided at the bottom of the sleeve (701), and two ends of the hydraulic cylinder (703) are respectively connected to the sleeve (701) and the extension beam (702).

2. A fan hub support device for blade installation according to claim 1, characterized in that: The top of the base (1) is movably connected to a sliding plate (4) via an annular guide rail, the fixing pile (5) is detachably mounted on the top of the sliding plate (4), a driving assembly (6) is provided at the outer end of the fixing pile (5), and a plurality of tooth grooves (101) are provided at the outer end of the base (1).

3. A fan hub support device for blade installation according to claim 2, characterized in that: The driving assembly (6) comprises a transverse plate (601) fixedly arranged at the outer end of the fixing pile (5); a gear (603) is arranged at the bottom of the transverse plate (601); the gear (603) is meshed with the outer end of the base (1) through a tooth groove (101); and a driving motor (602) for driving the gear (603) to rotate is fixedly arranged at the top of the transverse plate (601).

4. A fan hub support device for blade installation according to claim 1, characterized in that: Two sections of guardrails are fixedly provided on the top of the support platform (2), a notch is provided on the outer end of the support platform (2), a ladder (8) is provided on the top of the base (1), and the top of the ladder (8) extends into the inside of the notch and is rotatably connected to the inner wall of the notch.

5. A fan hub support device for blade installation according to claim 1, characterized in that: A support plate (9) is provided at the top of the base (1), four columns (3) are provided at the bottom of the support plate (9), the bottom ends of the columns (3) are connected to the top of the base (1), a plurality of pressure sensors (12) are fixedly provided at the top of the support plate (9), and the top ends of the pressure sensors (12) are in contact with the bottom end of the support platform (2).

6. A fan hub support device for blade installation according to claim 5, characterized in that: A pad (11) is provided at the bottom of the support plate (9), a controller (10) is fixedly provided at the bottom end of the pad (11), a networking module (13) is fixedly provided at the top end of the fixing pile (5), and the controller (10) is remotely wirelessly connected to a control center via the networking module (13).

7. A fan hub support device for blade installation according to claim 6, characterized in that: A through hole (901) penetrating the support plate (9) is provided at the center of the support plate (9); a fixing block (1101) and a plurality of connecting rods (1103) are fixedly provided at the top end of the pad (11); and the top end of the connecting rods (1103) is connected to the bottom end of the support plate (9); The fixing block (1101) is inlaid with an adjusting ball (1102), and a top column (1104) is fixedly provided on the top of the adjusting ball (1102). The top of the top column (1104) passes through the support plate (9) through the through hole (901) and is connected to the bottom end of the supporting platform (2).

8. A blade installation method, the method being performed using the fan hub support device for blade installation according to any one of claims 1 to 7, characterized in that: The specific steps of the method are as follows: Step 1: Install the support device on a flat ground; Step 2: The fan hub on which the blades are to be installed is hoisted to the top of the support platform (2) by means of a hoisting device, and then the relevant construction personnel climb to the top of the support platform (2) by means of a ladder (8) to install the blades; Step 3: According to the influence of the blades, the positions of the fixed pile (5) and the counterweight assembly (7) are adjusted, and the extension and contraction of the counterweight assembly (7) are controlled to adjust the lateral distance between the counterweight water tank (704) and the base (1), so as to balance the force of the support device; Step 4: After the blades are assembled, the entire wind turbine hub together with the blades is lifted from the support device and connected to the main part of the wind turbine generator set. The support device thus completes the installation of the entire blade and the wind turbine hub.

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