Self-climbing hoisting mechanism and hoisting method thereof

Abstract

The present invention discloses a self-climbing hoisting mechanism and a hoisting method thereof, which relates to the technical field of wind power installation, and solves the problem that the existing hoisting process has increasingly higher requirements for the maximum lifting height of the crane, and it is increasingly difficult to meet various requirements for wind power installation. It includes an upper fixed cylinder and a lower fixed cylinder, wherein the lower fixed cylinder is clamped on the outer periphery of the tower, and a rotary lifting device and a winch are also connected to the lower fixed cylinder, and the rotary lifting device is used to hoist the wind power components and install them on the tower; the upper fixed cylinder is clamped on the outer periphery of the tower or detachably connected to the top of the tower, and the winch is upwardly connected to the upper fixed cylinder, and after the lower fixed cylinder releases the tower, it moves upward under the pull of the winch, and then clamps on the outer periphery of the tower to achieve upward climbing. The self-climbing of the hoisting mechanism can be achieved, thereby reducing the cost of the hoisting mechanism, and is suitable for wind power installation in different regions and with different height requirements.

Description

Technical Field

[0001] The invention relates to the technical field of wind power installation, and in particular to a self-climbing hoisting mechanism and a hoisting method thereof. Background Art

[0002] In recent years, the wind power technology industry has developed rapidly, and wind power equipment has been continuously changing towards high-power and high-hub designs, and the size of the tower has also been changing towards large diameters and thicker designs.

[0003] Among them, the installation of wind power equipment is generally completed with the assistance of large cranes. However, due to the location in areas such as beaches, on the one hand, large cranes are difficult to reach, and on the other hand, the requirements for the maximum lifting height of the crane are becoming higher and higher. It is becoming increasingly difficult to meet various requirements of wind power installation. Therefore, a self-climbing lifting mechanism is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a self-climbing hoisting mechanism and a hoisting method thereof, which can realize the self-climbing of the hoisting mechanism, reduce the cost of the hoisting mechanism, and is suitable for wind power installation in different regions and with different height requirements.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A self-climbing hoisting mechanism comprises an upper fixed cylinder and a lower fixed cylinder, wherein the lower fixed cylinder is clamped on the outer periphery of the tower, and a rotary lifting device and a winch are connected to the lower fixed cylinder, wherein the rotary lifting device is used to lift the wind power components and is installed on the tower;

[0007] The upper fixed cylinder is clamped on the outer periphery of the tower or detachably connected to the top of the tower. The winch is upwardly connected to the upper fixed cylinder. After the lower fixed cylinder releases the tower, it moves upward under the pull of the winch and is then clamped on the outer periphery of the tower to achieve upward climbing.

[0008] Furthermore, the upper fixed cylinder is clamped on the outer periphery of the tower. After the upper fixed cylinder releases the tower, it moves upward under the upward pull of the rotary lifting device and is clamped on the outer periphery of the tower again, allowing the lower fixed cylinder to climb upward through the winch.

[0009] Furthermore, the upper fixed cylinder is detachably connected to the top of the tower, so that the lower fixed cylinder can climb upwards through a winch.

[0010] Furthermore, the tower includes a plurality of tower sections installed in sequence, the lower fixed cylinder is clamped on the outer wall of the installed tower section, the rotary lifting device hoists the next tower section to the top of the installed tower section, and the upper fixed cylinder is detachably connected to the top of the next tower section; after the next tower section is installed, the lower fixed cylinder climbs upward to the next tower section through the winch.

[0011] Furthermore, a circular groove matching the tower section is provided at the bottom of the upper fixed cylinder, and the upper fixed cylinder is plugged into the tower section through the circular groove;

[0012] The rotary lifting device is first hoisted on the top of the next tower section. After the next tower section is installed, the rotary lifting device is pre-hoisted on the upper fixed cylinder, and the rope end of the winch is also connected to the upper fixed cylinder;

[0013] After the lower fixed cylinder climbs to the next tower section, the rotary lifting device removes the upper fixed cylinder.

[0014] Furthermore, the top of each tower section is internally reinforced, and the lower fixing tube is clamped on the reinforced portion of the tower section.

[0015] Furthermore, the upper fixed tube includes two telescopic arc blocks arranged opposite to each other, and the two ends of the telescopic arc blocks are respectively connected to bidirectional screws. The bidirectional screws drive the telescopic arc blocks to move closer to or away from each other, so that the telescopic arc blocks clamp or leave the outer wall of the tower / abut or leave the top of the tower.

[0016] Furthermore, the lower fixed tube includes an inner fixed semicircular clamp and a plurality of outer movable semicircular clamps, and the two ends of the movable semicircular clamps are driven by telescopic cylinders to move closer to or away from the fixed semicircular clamps.

[0017] Furthermore, the rotary lifting device is also used for lifting fan blades. The rotary lifting device includes a lifting beam. Both ends of the lifting beam are respectively provided with lifting points, and the lifting beam is lifted to the blades through the two lifting points.

[0018] The present invention also provides a method for hoisting a self-climbing hoisting mechanism, comprising the following steps:

[0019] First, connect the upper and lower fixed cylinders to the upper and lower ends of the lowest tower section respectively; the winch is connected to the upper fixed cylinder upwards, and after the lower fixed cylinder releases the tower, it moves upwards under the pull of the winch, and then clamps on the outer periphery of the tower, climbing upwards to the upper end of the lowest tower section;

[0020] Then, the rotary hoisting device on the lower fixed cylinder hoists the next tower section to the top of the lowest tower section, and the next tower section is installed; the upper fixed cylinder is pulled up to the top of the next tower section by the rotary hoisting device and then clamped, or directly removed and manually fixed to the top of the next tower section, and finally the lower fixed cylinder is pulled up to the next tower section by the winch;

[0021] As the tower sections are installed upward, the lower fixed tube continues to climb upward.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. It can realize the self-climbing of the hoisting mechanism, reduce the cost of the hoisting mechanism, and is suitable for wind power installation in different regions and with different height requirements;

[0024] 2. As the overall weight of the climbing structure is relatively large, when the climbing mechanism is in close contact with the tower wall, in order to avoid depression or even damage to the tower wall surface, it is necessary to fix a climbing track on the outside of the tower or strengthen the entire section inside the tower so that the tower can support the climbing of the lifting mechanism, which is inconvenient and costly;

[0025] The self-climbing mechanism in the present application can only grasp a specific point position of the tower, and only the corresponding position needs to be strengthened, without the need to strengthen the entire section, thereby reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a self-climbing hoisting mechanism in Embodiment 1 of the present invention;

[0027] Figure 2 It is a structural schematic diagram of an upper fixed cylinder part in a self-climbing hoisting mechanism in Embodiment 1 of the present invention;

[0028] Figure 3 It is a structural schematic diagram of a lower fixed cylinder part in a self-climbing hoisting mechanism in Embodiment 1 of the present invention;

[0029] Figure 4 It is a climbing schematic diagram of a self-climbing hoisting mechanism in Embodiment 1 of the present invention;

[0030] Figure 5 This is a schematic diagram of a single blade hoisting of a self-climbing hoisting mechanism in Embodiment 1 of the present invention;

[0031] Figure 6 It is a climbing schematic diagram of a self-climbing hoisting mechanism in Embodiment 2 of the present invention.

[0032] In the figure, 0, reinforcement plate; 1, upper fixed cylinder; 11, telescopic arc block; 12, bidirectional screw; 2, lower fixed cylinder; 21, fixed semicircular clamp; 22, movable semicircular clamp; 3, rotary lifting device; 31, lifting beam; 4, winch. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Embodiment 1:

[0034] A self-climbing hoisting mechanism, such as Figure 1As shown, it includes an upper fixed cylinder 1 and a lower fixed cylinder 2, the lower fixed cylinder 2 is clamped on the outer periphery of the tower, and a rotary lifting device 3 and a winch 4 are also connected to the lower fixed cylinder 2. The rotary lifting device 3 is used to hoist the wind power component and install it on the tower. The wind power component includes a plurality of tower sections and may also include a top hub and / or wind turbine blades. The rotary lifting device 3 includes a rotating table at the bottom and a lifting mechanism at the top. How to realize rotation and lifting is the prior art and will not be described in detail here.

[0035] The upper fixed cylinder 1 is clamped on the outer periphery of the tower, and is pulled upward to another tower section or another part of the tower by the rotary lifting device 3 and then clamped, so that the lower fixed cylinder 2 can climb upward. The winch 4 is upwardly connected to the upper fixed cylinder 1. After the lower fixed cylinder 2 releases the tower, it moves upward under the pull of the winch 4 and is then clamped on the outer periphery of the tower to achieve upward climbing.

[0036] In this embodiment,

[0037] like Figure 2 As shown, the upper fixed tube 1 includes two telescopic arc blocks 11 arranged opposite to each other, and the two ends of the telescopic arc blocks 11 are respectively connected to the bidirectional screws 12, and the bidirectional screws 12 drive the telescopic arc blocks 11 to move closer to or away from each other, so that the telescopic arc blocks 11 clamp or leave the outer wall of the tower / abut or leave the top of the tower; the telescopic arc block 11 can be installed in the middle of the upper fixed tube 1, so that the tube wall above it provides certain support for the extended telescopic arc block 11, and the upper fixed tube 1 can also be clamped on the outside of the tower wall by other clamping mechanisms;

[0038] The upper fixed tube 1 and the lower fixed tube 2 can be fixed on the top of a tower section each time, so that each tower section only needs to be reinforced inside the top, so that the lower fixed tube 2 is clamped on the reinforced part of the tower section, and the upper fixed tube 1 is abutted or clamped on the top or outer periphery of the reinforced part of the tower section; specifically, a number of axial and circumferential reinforcement plates 0 are welded on the inner side of the top of each tower section.

[0039] like Figure 3 As shown, the lower fixed cylinder 2 includes an inner fixed semicircular clamp 21 and a plurality of outer movable semicircular clamps 22. Electric / hydraulic telescopic cylinders are fixed at both ends of the fixed semicircular clamp 21, and both ends of the movable semicircular clamp 22 are driven by the telescopic cylinders to move closer to or away from the fixed semicircular clamp 21; a plurality of abutment blocks for increasing friction can be connected to the inner sides of the fixed semicircular clamp 21 and the movable semicircular clamp 22, and the lower fixed cylinder 2 can also be clamped on the outside of the tower wall by other clamping mechanisms. A plurality of guide rollers are fixed at the upper and lower ends of the upper fixed cylinder 1 and the lower fixed cylinder 2 to facilitate climbing up and down.

[0040] like Figure 4As shown, the upper fixed cylinder 1 is clamped on the outer periphery of the tower, and another tower section is hoisted above the tower through the rotary lifting device 3 and installed and fixed. After the installation is completed, the rotary lifting device 3 is hoisted above the upper fixed cylinder 1; after the upper fixed cylinder 1 is released from the tower, it moves upward under the upward pull of the rotary lifting device 3, and then is clamped on the outer periphery of the tower, so that the lower fixed cylinder 2 can climb upward through the winch 4.

[0041] like Figure 5 As shown, in other embodiments, the rotary lifting device 3 can also be used to hoist the fan blades. In this embodiment, the rotary lifting device 3 can adopt the original single lifting point hoisting method, but it is easy to rotate and shake around the upper lifting point, which is difficult to control and is greatly affected by the weather and other environmental factors;

[0042] It can also be hoisted with two lifting points, that is, the rotary lifting device 3 includes a lifting beam 31, and its lifting arm is driven by a hydraulic cylinder to rotate and adjust the angle, and the end is rotatably connected to the lifting beam 31. The top of the lifting beam 31 can be connected to a driving motor and a gear to drive its rotation to control the angle of the lifting beam 31; blade-specific lifting points are respectively arranged at both ends of the lifting beam 31, and the wire rope is connected to the blade-specific lifting point through a steering wheel, or a winch device is directly connected in the lifting beam 31; the two lifting points are hoisted to the blade hanger, so that when the blade rotates and moves the angle, the lifting beam 31 can provide a reverse pulling force to maintain the relative stability of the blade.

[0043] The steel wire ropes at the two lifting points can be finally wound on the same hoisting mechanism to achieve synchronous lifting and lowering, or they can be controlled by two hoisting mechanisms to achieve independent control, which is convenient for installation angle adjustment.

[0044] The present invention also provides a method for hoisting a self-climbing hoisting mechanism, such as Figure 4 As shown, the following steps are included:

[0045] First, the upper fixed cylinder 1 and the lower fixed cylinder 2 are connected to the upper and lower ends of the lowest tower section respectively; the hoist 4 is connected to the upper fixed cylinder 1 upwards, and after the lower fixed cylinder 2 releases the tower, it moves upwards under the pull of the hoist 4, and then clamps on the outer periphery of the tower, and climbs upwards to the upper end of the lowest tower section;

[0046] Then, the rotary hoisting device 3 on the lower fixed cylinder 2 hoists the next tower section to the top of the lowest tower section, and the next tower section is installed; the rotary hoisting device 3 is then hoisted to the upper fixed cylinder 1, and after the upper fixed cylinder 1 is released, it is pulled upward by the rotary hoisting device 3 (while the winch 4 releases the rope synchronously) to the top of the next tower section and then clamped, or directly disassembled and manually fixed to the top of the next tower section, and finally the lower fixed cylinder 2 is pulled upward by the winch 4 to climb to the next tower section;

[0047] As the tower sections are installed upward, the lower fixed tube 2 continuously climbs upward; after the last tower section is installed, the hub on the top of the tower is finally hoisted and installed. Embodiment 2:

[0048] The structure of this embodiment is roughly the same as that of the first embodiment, with the main differences being:

[0049] like Figure 6 As shown, the upper fixed cylinder 1 is detachably connected to the top of the tower, so that the lower fixed cylinder 2 can climb upward through the winch 4. Compared with the upper fixed cylinder 1 in the first embodiment, which needs to be provided with an automatic clamping assembly, although it is more convenient, it has higher requirements for the clamping assembly. The upper fixed cylinder 1 in this embodiment can avoid a complex structure, that is, the upper fixed cylinder 1 does not need to automatically climb and automatically clamp, and can be directly disassembled from the top of each tower section to realize the climbing of the lower fixed cylinder 2;

[0050] The tower includes several tower sections installed in sequence, the lower fixed cylinder 2 is clamped on the outer wall of the installed tower section, the rotary lifting device 3 hoists the next tower section to the top of the installed tower section, and the upper fixed cylinder 1 is detachably connected to the top of the next tower section; after the next tower section is installed, the lower fixed cylinder 2 climbs upward to the next tower section through the winch 4.

[0051] In this embodiment, a circular groove matching the tower section is provided at the bottom of the upper fixing tube 1, and the upper fixing tube 1 is plugged into the tower section through the circular groove; a plurality of fixing structures such as screws can be added to the upper fixing tube 1 to improve the stability of the connection with the tower section.

[0052] The upper fixed cylinder 1 is pre-installed on the top of the next tower section, and the rotary lifting device 3 is first hoisted on the top of the next tower section. After the next tower section is installed, the rotary lifting device 3 is pre-hoisted on the upper fixed cylinder 1, and the rope end of the hoist 4 is also connected to the upper fixed cylinder 1 (if the rope end of the hoist 4 is long enough, it can also be installed in the upper fixed cylinder 1 on it before the tower section is hoisted);

[0053] After the lower fixed cylinder 2 climbs to the next tower section (the winch 4 is retracted upward and the slewing crane 3 is lowered downward) and is clamped, the slewing crane 3 is retracted upward to remove the upper fixed cylinder 1, which can also be directly removed manually for the installation of the next tower section.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A self-climbing hoisting mechanism, characterized in that: It includes an upper fixed cylinder and a lower fixed cylinder, wherein the lower fixed cylinder is clamped on the outer periphery of the tower, and a rotary lifting device and a winch are connected to the lower fixed cylinder, and the rotary lifting device is used to hoist the wind power components and install them on the tower; The tower includes a plurality of tower sections installed in sequence, the lower fixed tube is clamped on the outer wall of the installed tower section, and the rotary lifting device hoists the next tower section on the top of the installed tower section; the upper fixed tube is clamped on the outer periphery of the tower, and is pulled up to another tower section or another part of the tower by the rotary lifting device and then clamped, so that the lower fixed tube can climb upward; The winch is connected to the upper fixed cylinder upwards. After the lower fixed cylinder releases the tower, it moves upwards under the pull of the winch and then clamps itself on the outer periphery of the tower to achieve upward climbing.

2. A self-climbing hoisting mechanism according to claim 1, characterized in that: The top of each tower section is internally reinforced, and the lower fixing tube is clamped at the reinforced portion of the tower section.

3. A self-climbing hoisting mechanism according to claim 1, characterized in that: The upper fixed cylinder includes two telescopic arc blocks arranged opposite to each other, and the two ends of the telescopic arc blocks are respectively connected to bidirectional screws. The bidirectional screws drive the telescopic arc blocks to move closer to or away from each other, so that the telescopic arc blocks clamp or leave the outer wall of the tower / abut or leave the top of the tower.

4. A self-climbing hoisting mechanism according to claim 1 or 3, characterized in that: The lower fixed cylinder comprises an inner fixed semicircular clamp and a plurality of outer movable semicircular clamps, and the two ends of the movable semicircular clamps are driven by telescopic cylinders to approach or move away from the fixed semicircular clamps.

5. The self-climbing hoisting mechanism according to claim 1, characterized in that: The rotary lifting device is also used for lifting fan blades. The rotary lifting device comprises a lifting beam. Both ends of the lifting beam are respectively provided with lifting points, and the blades are lifted by the two lifting points.

6. A hoisting method based on the self-climbing hoisting mechanism according to claim 1, characterized in that: The following steps are included: First, connect the upper and lower fixed cylinders to the upper and lower ends of the lowest tower section respectively; the winch is connected to the upper fixed cylinder upwards, and after the lower fixed cylinder releases the tower, it moves upwards under the pull of the winch, and then clamps on the outer periphery of the tower, climbing upwards to the upper end of the lowest tower section; Then, the rotary hoisting device on the lower fixed cylinder hoists the next tower section to the top of the lowest tower section, and the next tower section is installed; the upper fixed cylinder is pulled up to the top of the next tower section by the rotary hoisting device and then clamped, and finally the lower fixed cylinder is pulled up to the next tower section by the winch; As the tower sections are installed upward, the lower fixed tube continues to climb upward.

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