Self-hoisting tower structure for wind power and use method thereof

Abstract

The present invention discloses a self-lifting tower structure for wind power and a method for using the same. The self-lifting tower structure for wind power comprises a tower body and a lifting device. The lifting device comprises a lifting bracket, a climbing bracket is arranged on the lifting bracket, a lifting arm is arranged on the upper end of the lifting bracket, a first driving device is arranged on the lifting arm, the first driving device is connected to a lifting rope for lifting the tower body and a wind turbine generator, and a second driving device and a third driving device are arranged on the lifting bracket for driving the climbing bracket to slide on the lifting bracket; the tower body is composed of a plurality of tower sections, and each tower section is provided with at least two lifting support plates. After using the self-lifting tower for wind power of the present invention, the installation of wind turbines can be carried out in areas with inconvenient transportation or scarce equipment, without the need to rent special crane equipment, and the tower body, wind turbine generator set, and blades can be lifted by utilizing the structure of the tower body and the self-made lifting equipment.

Description

Technical Field

[0001] The invention relates to a self-hoisting tower structure dedicated to wind power and a use method thereof, belonging to the technical field of hoisting of wind power generators. Background Art

[0002] At present, most of the traditional wind turbines are hoisted by external equipment such as large cranes or offshore vessels.

[0003] The current lifting structure has the following disadvantages:

[0004] Patent CN109650267B is mainly applicable to small towers with the same diameter at the bottom and top. The rack cannot be very long, and the entire supporting structure relies on only a single ring outside the tower, so stability is also a problem.

[0005] Patent CN109941897B mainly talks about the application of tower cranes in the traditional construction industry. It is an independent self-lifting crane that requires a dedicated foundation. The tower crane itself requires high strength and high production cost, and cannot be used in the wind turbine industry.

[0006] Patent CN211496696 improves the auxiliary boom of the existing crane, and the structure is more stable. The disadvantage is that it is a modification of the existing crane and cannot solve the problem of not using the crane. Summary of the invention

[0007] The technical problem to be solved by the present invention is: how to install a wind turbine in an area with inconvenient transportation or scarce equipment.

[0008] In order to solve the above technical problems, the technical solution of the present invention is to provide a self-lifting tower structure dedicated to wind power, including a tower body, characterized in that it also includes lifting equipment for lifting the tower body and a wind turbine, the lifting equipment includes a lifting bracket, the lifting bracket is provided with a climbing bracket that can slide up and down, the upper end of the lifting bracket is provided with a lifting arm that can be flipped around the upper end of the lifting bracket, the lifting arm is provided with a first driving device, the first driving device is connected to the lifting rope for lifting the tower body and the wind turbine, the lifting bracket is provided with a second driving device for driving the climbing bracket to slide on the lifting bracket and a third driving device for driving the lifting bracket from a horizontal state to a vertical state; the tower body is composed of a plurality of tower sections, and each tower section is provided with at least two lifting support plates.

[0009] Preferably, the first driving device is a main hoisting winch, and the main hoisting winch is connected to the hoisting rope;

[0010] The third driving device is a hoisting bracket flip winch;

[0011] The second driving device includes a climbing support hoisting winch and a hoisting support hoisting winch, the hoisting support hoisting winch is arranged below the climbing support, and the climbing support hoisting winch is arranged above the climbing support; the climbing support hoisting winch is connected to the climbing support through a cable; the hoisting support hoisting winch is connected to the climbing support through a cable;

[0012] Preferably, the lifting bracket is also provided with a fourth driving device for driving the boom to flip or maintain horizontality; the fourth driving device is a boom unfolding winch, and the boom unfolding winch is connected to one end of the boom through a pull rope; the boom unfolding winch is arranged above the climbing bracket.

[0013] Preferably, the lifting bracket flip hoist is arranged in the middle position of the lifting bracket.

[0014] Preferably, the climbing bracket matches the hanging bracket; the climbing bracket is sleeved on the hanging bracket.

[0015] Preferably, the hoisting bracket, climbing bracket and boom are all welded from steel structures.

[0016] A method for using a self-hoisting tower structure dedicated to wind power generation, characterized in that it comprises the following steps:

[0017] Step 1: Assemble the lifting equipment, connect the bottom of the lifting bracket to the foundation through a hinge, connect one end of the flip wire rope to the pre-buried lifting point of the foundation, and connect the other end to the lifting bracket flip winch; turn on the lifting bracket flip winch, pull the lifting bracket to a vertical state through the flip wire rope, so that the lifting equipment is vertically fixed on the foundation; the boom is horizontally set at the upper end of the lifting bracket;

[0018] Step 2: Use the erected hoisting equipment to start the main hoisting winch on the top of the hoisting equipment, and hoist the first tower section of the tower body through the hoisting rope connected to the main hoisting winch. After the first tower section is installed on the foundation, lay the hoisting equipment on the ground, connect the hoisting bracket to the lowest hoisting support plate on the first tower section, connect one end of the flipping wire rope to the highest hoisting support plate on the first tower section, and connect the other end of the flipping wire rope to the hoisting bracket flipping winch. Start the hoisting bracket flipping winch, pull the hoisting equipment to a vertical state through the flipping wire rope, connect it to the hoisting bracket of the hoisting equipment through multiple hoisting support plates on the first tower section, and disconnect the flipping wire rope from the hoisting bracket flipping winch;

[0019] Step 3: Use the hoisting rope connected to the main hoist winch to hoist the second tower section of the tower body, hoist the second tower section onto the first tower section and fix it to the first tower section;

[0020] Step 4: Use the climbing bracket lifting winch to lift the climbing bracket, and connect the climbing bracket to at least two lifting support plates of the second tower section. After the climbing bracket is connected, use the lifting bracket lifting winch to lift the lifting bracket, and connect the lifting bracket to at least two lifting support plates of the second tower section, completing a lifting step of the lifting equipment;

[0021] Step 5: Use the hoisting equipment to hoist the other towers of the tower body, the body and blades of the wind turbine generator in sequence according to the methods of steps 3 and 4;

[0022] Step 6: Follow the reverse operation sequence of Step 4 to lower the hoisting equipment to the ground and separate it from the tower body to complete the project.

[0023] Preferably, in step 1, the lifting equipment is vertically fixed on the foundation by connecting the climbing bracket to the ground embedded parts and pulling auxiliary safety ropes around the climbing bracket.

[0024] Preferably, each time the hoisting device is moved from a horizontal state to a vertical state, a boom unfolding winch connected to one end of a pull rope needs to be started, and the boom parallel to the hoisting bracket is pulled to be perpendicular to the hoisting bracket through the pull rope.

[0025] Preferably, in step 4, the climbing bracket hoisting winch hoists the climbing bracket as follows: since the lifting bracket is fixed on the tower body, the climbing bracket hoisting winch fixed on the lifting bracket is started, and the climbing bracket is pulled up through the cable between the climbing bracket hoisting winch and the climbing bracket;

[0026] The lifting winch of the lifting bracket lifts the lifting bracket as follows: since the climbing bracket is fixed on the tower body, the lifting winch of the lifting bracket fixed on the lifting bracket is started, and the lifting bracket is lifted relative to the climbing bracket through the cable between the lifting winch of the lifting bracket and the climbing bracket.

[0027] After using the wind power dedicated self-hoisting tower of the present invention, wind turbines can be installed in areas with inconvenient transportation or scarce equipment. There is no need to rent special crane equipment. The tower body and wind turbine generator sets and blades can be hoisted by using the tower body structure and self-made hoisting equipment.

[0028] The tower body of the present invention is consistent with the conventional wind power tower, except that a series of hoisting support plates are welded on the periphery of the tower body according to a certain size distribution. These support plates are used as the support and lifting and lowering fulcrums of the hoisting equipment, so that the tower crane can be raised and lowered. The hoisting equipment is all made of welded steel structure, and the lifting, turning, and up and down are all achieved by winches and wire ropes; except for the tower body, the rest of the hoisting equipment can be reused. The present invention can realize self-hoisting, which solves the problem of installing wind turbines in areas with inconvenient transportation or scarce equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a self-hoisting tower structure dedicated to wind power;

[0030] Figure 2 It is a schematic diagram of the lifting equipment;

[0031] Figure 3 A schematic diagram of pulling the hoisting equipment from a horizontal state to a vertical state;

[0032] Figure 4 This is a schematic diagram of the connection and pulling of the first tower section with the lifting equipment after installation on the foundation;

[0033] Figure 5 This is a schematic diagram of using lifting equipment to lift the second tower section;

[0034] Figure 6 A schematic diagram of a climbing bracket sliding from a first tower section to a second tower section and being connected thereto;

[0035] Figure 7 Schematic diagram of the lifting bracket being raised to the position of the second tower section. DETAILED DESCRIPTION

[0036] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0037] The present invention provides a self-hoisting tower structure dedicated to wind power generation, such as Figure 1 As shown, it includes a tower body 1 and a lifting device for lifting the tower body 1 and a wind turbine. A plurality of lifting support plates 11 are provided on the tower body 1. When the tower body 1 is lifted by the lifting device, the tower body 1 and the lifting device are connected by a plurality of lifting support plates 11. The position G in the figure is the position of the tower body 1 and the wind turbine during lifting.

[0038] like Figure 2As shown, the hoisting equipment is mainly composed of a hoisting bracket 2, a climbing bracket 3, a boom 4 and a plurality of winches. The hoisting bracket 2, the climbing bracket 3 and the boom 4 are all welded steel structures. The foundation of the wind turbine needs to be pre-embedded with the hoisting bracket 2, the wire rope lifting point and other embedded parts (used when hoisting the first section of the tower).

[0039] The climbing bracket 3 is a hollow square tubular structure. The climbing bracket 3 is sleeved on the hoisting bracket 2 and can slide up and down on the hoisting bracket 2. The climbing bracket 3 matches the hoisting bracket 2. The lower part of the hoisting bracket 2 is provided with a hoisting bracket hoisting winch 9, and the hoisting bracket hoisting winch 9 is arranged below the climbing bracket 3. The hoisting bracket 2 is provided with a climbing bracket hoisting winch 6, a boom unfolding winch 7 and a hoisting bracket flipping winch 8 above the climbing bracket 3. The upper end of the hoisting bracket 2 is provided with a boom 4, and the boom 4 can be flipped at the upper end of the hoisting bracket 2. The boom 4 is provided with a main hoisting winch 5, and the main hoisting winch 5 is connected to the hoisting rope used to hoist the tower body 1 and the wind turbine. One end of the boom 4 is connected to the boom unfolding winch 7 through a pull rope.

[0040] The climbing support hoisting winch 6 is connected to the climbing support 3 via a cable or other pullable device; the hoisting support hoisting winch 9 is connected to the climbing support 3 via a cable or other pullable device.

[0041] The tower body 1 is composed of multiple tower sections, and each tower section is provided with at least two lifting support plates 11. When fixedly connected to the tower body 1, the lifting bracket 2 or the climbing bracket 3 is connected to at least two lifting support plates 11.

[0042] In this embodiment, the tower body 1 is composed of three tower sections. Each tower section is provided with three groups of upper, middle and lower hoisting support plates 11, and each group of hoisting support plates 11 is provided with two hoisting support plates 11. When fixedly connected to the tower body 1, the hoisting bracket 2 or the climbing bracket 3 is connected to the three hoisting support plates 11.

[0043] The working process of the present invention is as follows:

[0044] (1) Figure 3 As shown, before the wind turbine is hoisted, the hoisting equipment is assembled, the hinge at the bottom of the hoisting bracket 2 is connected to the foundation, one end of the flip wire rope is connected to the pre-embedded lifting point of the foundation, and the other end is connected to the hoisting bracket flip hoist 8. The hoisting bracket flip hoist 8 is turned on, and the hoisting equipment is pulled to a vertical state by the flip wire rope, the climbing bracket 3 is connected to the ground embedded part, and the auxiliary safety rope is pulled around the climbing bracket 3. The flip wire rope is disconnected from the hoisting bracket flip hoist 8, and the boom deployment hoist 7 is connected to one end of the pull rope, and the other end of the pull rope is connected to the boom 4. The boom deployment hoist 7 is started, and the boom 4 is pulled from a vertical state to a horizontal state by the pull rope;

[0045] (2) Figure 4 As shown, using the erected hoisting equipment, start the main hoisting winch 5 on the top of the hoisting equipment, and hoist the first section of the tower body 1 through the hoisting rope connected to the main hoisting winch 5. After the first section of the tower is installed on the foundation, start the boom unfolding winch 7, and pull the boom 4 from a horizontal state to a vertical state through the pull rope. The climbing bracket 3 is disconnected from the ground embedded parts, the climbing bracket 3 is disconnected from the auxiliary safety ropes around it, the hoisting bracket 2 is disconnected from the foundation, and the climbing hoisting bracket flipping winch 8 is turned on to put the hoisting equipment on the ground, connect the hoisting bracket 2 to the lowest hoisting support plate 11 on the first section of the tower, and flip the wire rope. One end is connected to the topmost lifting support plate 11 on the first tower section, and the other end of the flipping wire rope is connected to the lifting bracket flipping winch 8. The lifting bracket flipping winch 8 is turned on, and the lifting equipment is pulled to a vertical state by the flipping wire rope, and connected to the lifting bracket 2 of the lifting equipment through multiple lifting support plates 11 on the first tower section, and the boom unfolding winch 7 is started, and the boom 4 is pulled from a vertical state to a horizontal state (that is, the boom 4 parallel to the lifting bracket 2 is pulled to be perpendicular to the lifting bracket 2) by the pull rope; the climbing bracket lifting winch 6 is turned on, and the climbing bracket 3 is lifted and connected to at least two lifting support plates 11 in the middle of the first tower section;

[0046] (3) Use the hoisting rope connected to the main hoisting winch 5 to hoist the second section of the tower body 1, such as Figure 5 As shown, the second tower section is hoisted onto the first tower section and fixed to the first tower section;

[0047] (4) Use the climbing support hoisting winch 6 to lift the climbing support 3, and connect the climbing support 3 to at least two lifting support plates 11 of the second tower section, such as Figure 6 As shown, after the climbing bracket 3 is connected, the hoisting bracket 2 is lifted by the hoisting bracket lifting winch 9, and the hoisting bracket 2 is connected to at least two hoisting support plates 11 of the second tower section, as shown in FIG. Figure 7 As shown, one lifting step of the hoisting equipment is completed;

[0048] (5) Use the hoisting equipment to hoist the third tower section (such as Figure 1 As shown), the body and blades of the wind turbine;

[0049] (6) Following the reverse operation sequence of step (4), the lifting equipment is lowered to the ground and separated from the tower body 1 to complete the project.

Claims

1. A method for using a self-hoisting tower structure dedicated to wind power, characterized in that: A self-lifting tower structure for wind power generation comprises a tower body (1), and also comprises a lifting device for lifting the tower body (1) and a wind turbine generator, the lifting device comprising a lifting bracket (2), the lifting bracket (2) being provided with a climbing bracket (3) capable of sliding up and down, the upper end of the lifting bracket (2) being provided with a lifting arm (4) capable of turning around the upper end of the lifting bracket (2), the lifting arm (4) being provided with a first driving device, the first driving device being connected to a lifting rope for lifting the tower body (1) and the wind turbine generator, the lifting bracket (2) being provided with a second driving device for driving the climbing bracket (3) to slide on the lifting bracket (2) and a third driving device for driving the lifting bracket (2) from a horizontal state to an upright state; the tower body (1) is composed of a plurality of tower sections, each of which is provided with at least two lifting support plates (11); The first driving device is a main hoisting winch (5), and the main hoisting winch (5) is connected to a hoisting rope; The third driving device is a hoisting bracket tilting winch (8); The second driving device comprises a climbing support hoisting winch (6) and a hoisting support hoisting winch (9), wherein the hoisting support hoisting winch (9) is arranged below the climbing support (3), and the climbing support hoisting winch (6) is arranged above the climbing support (3); the climbing support hoisting winch (6) is connected to the climbing support (3) via a cable; and the hoisting support hoisting winch (9) is connected to the climbing support (3) via a cable; The hoisting bracket (2) is also provided with a fourth driving device for driving the boom (4) to flip or keep it horizontal; the fourth driving device is a boom unfolding winch (7), and the boom unfolding winch (7) is connected to one end of the boom (4) via a pull rope; the boom unfolding winch (7) is arranged above the climbing bracket (3); The method for using the self-hoisting tower structure for wind power generation includes the following steps: Step 1: The lifting equipment is assembled, the bottom of the lifting bracket (2) is connected to the foundation through a hinge, one end of the tilting wire rope is connected to the pre-buried lifting point of the foundation, and the other end is connected to the lifting bracket tilting winch (8); the lifting bracket tilting winch (8) is turned on, and the lifting bracket (2) is pulled to a vertical state through the tilting wire rope, so that the lifting equipment is vertically fixed on the foundation; the lifting arm (4) is horizontally arranged at the upper end of the lifting bracket (2); Step 2: Using the erected lifting equipment, start the main lifting winch (5) on the top of the lifting equipment, and lift the first tower section of the tower body (1) through the lifting rope connected to the main lifting winch (5). After the first tower section is installed on the foundation, lay the lifting equipment on the ground, connect the lifting bracket (2) to the lowest lifting support plate (11) on the first tower section, connect one end of the turning wire rope to the highest lifting support plate (11) on the first tower section, connect the other end of the turning wire rope to the lifting bracket turning winch (8), start the lifting bracket turning winch (8), pull the lifting equipment to a vertical state through the turning wire rope, connect the lifting bracket (2) of the lifting equipment through the multiple lifting support plates (11) on the first tower section, and disconnect the turning wire rope from the lifting bracket turning winch (8); Step 3: Use a lifting rope connected to the main lifting winch (5) to lift the second tower section of the tower body (1), lift the second tower section onto the first tower section and fix it to the first tower section; Step 4: using the climbing support hoisting winch (6) to lift the climbing support (3), and connecting the climbing support (3) to at least two lifting support plates (11) of the second tower section; after the climbing support (3) is connected, using the lifting support hoisting winch (9) to lift the lifting support (2), and connecting the lifting support (2) to at least two lifting support plates (11) of the second tower section, thereby completing a lifting step of the lifting equipment; Step 5: Using lifting equipment, sequentially lift other towers of the tower main body (1), the body of the wind turbine generator and blades in the manner of steps 3 and 4; Step 6: Follow the reverse operation sequence of step 4 to lower the lifting equipment to the ground and separate it from the tower body (1).

2. The method for using a self-hoisting tower structure for wind power as claimed in claim 1, characterized in that: The lifting bracket tilting winch (8) is arranged at the middle position of the lifting bracket (2).

3. The method for using a self-hoisting tower structure for wind power as claimed in claim 1, characterized in that: The climbing bracket (3) matches the hanging bracket (2); the climbing bracket (3) is sleeved on the hanging bracket (2).

4. The method for using a self-hoisting tower structure for wind power as claimed in claim 1, characterized in that: The hoisting bracket (2), the climbing bracket (3) and the boom (4) are all made of welded steel structures.

5. The method for using the self-hoisting tower structure for wind power as claimed in claim 1, characterized in that: In the above-mentioned step 1, the lifting equipment is vertically fixed on the foundation by: connecting the climbing bracket (3) to the ground embedded part, and pulling an auxiliary safety rope around the climbing bracket (3).

6. The method for using a self-hoisting tower structure for wind power as claimed in claim 1, characterized in that: Each time the hoisting device is moved from a horizontal state to a vertical state, a boom unfolding winch (7) connected to one end of a pull rope needs to be started, and the boom (4) parallel to the hoisting bracket (2) is pulled to be perpendicular to the hoisting bracket (2) through the pull rope.

7. The method for using the self-hoisting tower structure for wind power as claimed in claim 1, characterized in that: In the step 4, the climbing support hoisting winch (6) hoists the climbing support (3) as follows: since the lifting support (2) is fixed on the tower body (1), the climbing support hoisting winch (6) fixed on the lifting support (2) is started, and the climbing support (3) is pulled up through the cable between the climbing support hoisting winch (6) and the climbing support (3); The lifting bracket lifting winch (9) lifts the lifting bracket (2) as follows: since the climbing bracket (3) is fixed on the tower body (1), the lifting bracket lifting winch (9) fixed on the lifting bracket (2) is started, and the lifting bracket (2) is lifted relative to the climbing bracket (3) through the cable between the lifting bracket lifting winch (9) and the climbing bracket (3).

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