A wind power main machine and hub universal lifting appliance and lifting method

Abstract

The application discloses a wind power main machine and hub universal lifting appliance and hoisting method, the lifting appliance includes a character-shaped lifting beam, a Y-shaped lifting beam, a support column assembly, a connecting assembly and a support, the character-shaped lifting beam and the Y-shaped lifting beam are detachably connected through the connecting flanges arranged on the respective end faces, the Y-shaped lifting beam includes a beam body, a pin shaft, a support and a movable support leg, one movable support leg is installed in each large through hole, the pin shaft passes through the large through hole and one end of the movable support leg, so that one end of the movable support leg is movably hinged with the beam body, the free ends of the two movable support legs are connected through the support column assembly, and the free end of each movable support leg and the free end of the character-shaped lifting beam are provided with the connecting assembly; the application can improve the stress state of the lifting beam, improve the carrying capacity, change the length and the included angle and other parameter information of components, so that the application can be used for more wind turbines, the universality is improved, and thus the material is saved and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of a general-purpose lifting device for wind power, in particular to a general-purpose lifting device for wind power main units and hubs and a hoisting method. BACKGROUND

[0002] In recent years, in order to ensure the safety, convenience and efficiency of the installation of wind power units, the method of hoisting the main unit and the hub as a whole is mostly adopted. However, as the requirements for wind turbines are getting higher and higher, the power generation capacity of the wind turbines is greatly improved, and at the same time, the weight of the wind turbines themselves is getting larger and larger, which leads to higher difficulty and safety requirements for hoisting.

[0003] At present, in the hoisting method of hoisting the main unit and the hub as a whole, the hoisting beam requires a large amount of material and has a large weight, and is often subjected to a large bending moment. Due to the differences between wind turbine models, the current hoisting scheme has poor universality. In most cases, a set of main unit and hub lifting device can only be used for hoisting one type of wind turbine, which ultimately leads to serious waste of materials and high cost.

[0004] In summary, the hoisting method of hoisting the main unit and the hub as a whole has unreasonable stress state of the hoisting beam, poor universality, serious waste of materials and high cost. Therefore, there is an urgent need for a general-purpose lifting device for hoisting the main unit and the hub of a wind turbine as a whole, which has good stress state, strong universality, saves materials and cost. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provides a general-purpose lifting device for wind power main units and hubs and a hoisting method, which improves the stress state of the hoisting beam so that it is not subjected to a bending moment or only subjected to a very small bending moment, thereby improving its carrying capacity. By changing the length and angle of the components and other parameter information, the device can be used for more wind turbine units, improving its universality, thereby saving materials and reducing costs.

[0006] The present application achieves the above-mentioned purpose by the following technical scheme: a general-purpose lifting device for wind power main units and hubs, comprising a straight-shaped hoisting beam, a Y-shaped hoisting beam, a support column assembly, a connecting assembly and a support base, the straight-shaped hoisting beam and the Y-shaped hoisting beam are detachably connected through connecting flanges arranged on the end faces thereof, and the free end of the straight-shaped hoisting beam is provided with a pin hole; the Y-shaped hoisting beam comprises a beam body, a pin and a movable support leg, at least two large holes are formed in the beam body, one movable support leg is installed in each large hole, the pin passes through the large hole and one end of the movable support leg, so that one end of the movable support leg is movably connected with the beam body, the free ends of the two movable support legs are connected through the support column assembly, and the connecting assembly is installed at the free end of each movable support leg and the free end of the straight-shaped hoisting beam; and the support base is installed at the bottom of the beam body and the movable support leg.

[0007] Further, the free end of the movable leg is provided with two end plates parallel to each other, and each of the two end plates is provided with a pin hole for mounting a pin.

[0008] Further, the connecting assembly comprises two parallel pull plates, a pin and an end plate. Each of the two pull plates is provided with a pin hole, and the pin is connected to a lifting belt for lifting through the pin holes. One of the pin holes is provided with four evenly distributed bolt holes in the circumferential direction, and the other pin hole is aligned with the pin holes of the I-shaped beam and the end plate to form a movable hinge through the pin.

[0009] Further, a plurality of small holes are arranged circumferentially along each large hole in the beam body, and the end of the movable leg is provided with an arc-shaped hole. The rotation range of the movable leg is limited by the pin passing through the small holes and the arc-shaped hole between the beam body and the movable leg.

[0010] Further, the lifting lug is installed at the top of the I-shaped beam and the Y-shaped beam for lifting each component.

[0011] Further, the support column assembly comprises a first cylinder, a second cylinder and a pin. The inner diameter of the first cylinder is larger than the outer diameter of the second cylinder, so that the first cylinder can be nested with the second cylinder. The first cylinder is provided with a fixing hole, and the second cylinder is provided with a plurality of fixing holes. The fixing hole of the first cylinder and the fixing holes of the second cylinder are fixed together by the pin, which is used to adjust the length of the support column assembly. The two ends of the support column assembly are movably connected to the free end of the movable leg through the pin, so that the two ends of the support column assembly can rotate around the connection point.

[0012] Further, the connecting assembly at the free end of the I-shaped beam is provided with a lifting ring, which can be connected to the pin and the lifting belt respectively.

[0013] Further, the surface of the pin is provided with a bushing for reducing the wear of the pin.

[0014] Further, each movable leg comprises a first leg and a second leg, and the first leg and the second leg are detachably connected through the flanges provided on the respective end faces.

[0015] A lifting method of the wind power main machine and hub universal lifting device described above, the method comprises:

[0016] According to the weight, the gravity center position of the wind power main machine and the hub, and the relative position of the three lifting points, the length of the one-shaped lifting beam is changed, or the length of the supporting leg of the Y-shaped lifting beam is changed, or the supporting leg angle of the Y-shaped lifting beam and the connecting length of the supporting column assembly are adjusted, so that the three lifting belt connection positions of the universal lifting device correspond to the projection positions of the three lifting points of the main machine and the hub in the horizontal direction one by one, and the intersection position of the three center lines of the Y-shaped lifting beam corresponds to the gravity center position of the main machine and the hub; the positions below the three connection assemblies of the universal lifting device are connected with the three lifting point positions of the main machine and the hub through the lifting belt and the shackle, the positions above the three connection assemblies of the universal lifting device are connected with the hooks of the crane through the three lifting belts, and in order to ensure that the main machine and the hub are lifted horizontally, the position of the hook needs to be located directly above the gravity center of the main machine and the hub; at this time, the horizontal projection of the center lines of the three lifting belts above and the three axial directions of the Y-shaped lifting beam are respectively coincident, and through stress analysis, it can be obtained that the one-shaped lifting beam and the Y-shaped lifting beam are not affected by the bending moment.

[0017] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0018] 1. The present application can improve the stress state of the lifting device, so that it is not affected by the bending moment or is affected by a very small bending moment, thereby greatly improving the carrying capacity of the lifting device;

[0019] 2. The present application can adjust the connection assembly position of the free end of the lifting device by changing the length of the one-shaped lifting beam, the angle of the two movable supporting legs, the length of the movable supporting leg and the length of the supporting column, thereby being suitable for more wind power main machines and hub overall lifting working conditions, and having strong universality;

[0020] 3. The universal lifting device of the present application has simple structure and low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the universal lifting device.

[0022] Figure 2 It is a structural schematic diagram of the one-shaped lifting beam.

[0023] Figure 3 It is a structural schematic diagram of the Y-shaped lifting beam.

[0024] Figure 4 It is a structural schematic diagram of the beam body.

[0025] Figure 5 It is a structural schematic diagram of the first supporting leg.

[0026] Figure 6 It is a structural schematic diagram of the second supporting leg.

[0027] Figure 7 It is a structural schematic diagram of the pull plate.

[0028] Figure 8 Figure 1 is a schematic diagram of a wind power main machine and a hub hoisting using the universal lifting appliance. DETAILED DESCRIPTION

[0029] The application will be further described in conjunction with specific examples.

[0030] Example 1

[0031] Referring to Figures 1 to 7 The wind power main machine and hub universal lifting appliance provided by the embodiment includes a straight lifting beam 1, a Y-shaped lifting beam 2, a support column assembly, a connecting assembly 4, a support 5 and a lifting lug 6.

[0032] The lifting lug 6 is installed at the top of the straight lifting beam 1 and the Y-shaped lifting beam 2, and is used for hoisting each component.

[0033] The straight lifting beam 1 and the Y-shaped lifting beam 2 are detachably connected through the connecting flanges 1-1 and 2-1-1 arranged on the end faces thereof, and the free end of the straight lifting beam 1 is provided with a pin hole 1-2.

[0034] The Y-shaped lifting beam 2 includes a beam body 2-1, a pin (not shown in the figure) and a movable support leg 2-3, the support 5 is respectively installed at the bottom of the beam body 2-1 and the movable support leg 2-3, two large holes 2-1-2 are formed in the beam body 2-1, three small holes 2-1-3 are arranged circumferentially along each large hole 2-1-2, one movable support leg 2-3 is installed corresponding to each large hole 2-1-2, the pin (not shown in the figure) passes through the large hole 2-1-2 and one end of the movable support leg 2-3, so that the one end of the movable support leg 2-3 is movably connected with the beam body 2-1, the end of the movable support leg 2-3 is provided with a large hole 2-4-1 and an arc-shaped hole 2-4-2 corresponding to the beam body 2-1, the rotation range of the movable support leg 2-3 is limited by the pin passing through the small hole 2-1-3 and the arc-shaped hole 2-4-2 between the beam body 2-1 and the movable support leg 2-3, each movable support leg 2-3 includes a first support leg A and a second support leg B, the first support leg A and the second support leg B are detachably connected through the flanges A1 and B1 arranged on the end faces thereof.

[0035] The free ends of the two movable legs 2-3 are connected by a support column assembly, which comprises a first cylinder 3-1, a second cylinder 3-2 and a pin shaft 3-3. The inner diameter of the first cylinder 3-1 is larger than the outer diameter of the second cylinder 3-2, so that the first cylinder 3-1 can be nested with the second cylinder 3-2. A fixing hole 3-1-1 is formed on the first cylinder 3-1, and a plurality of fixing holes 3-2-1 are formed on the second cylinder 3-2. The fixing hole 3-1-1 of the first cylinder and the fixing holes 3-2-1 of the second cylinder are fixed together by the pin shaft 3-3, which is used to adjust the length of the support column assembly. The two ends of the support column assembly are movably connected with the free ends of the movable legs 2-3 by pin shafts, so that the two ends of the support column assembly can rotate around the connection points.

[0036] The free ends of each movable leg 2-3 and the free end of the I-shaped hoisting beam 1 are provided with a connecting assembly 4. The free end of each movable leg 2-3 is provided with two end plates 7 parallel to each other, and the two end plates 7 are each provided with a pin shaft hole 7-1 for mounting a pin shaft. The pin shaft holes 7-1 of the two end plates are connected by a pin shaft. The connecting assembly 4 comprises two parallel pull plates 4-1, a pin shaft (not shown in the figure) and an end plate 4-3. The two ends of the pull plate 4-1 are each provided with a pin shaft hole 4-1-1 and 4-1-2. One of the pin shaft holes 4-1-1 is provided with four evenly distributed bolt holes for fixing the pin shaft in the circumferential direction, which are used to connect and fix the lifting belt 8 for lifting. The other pin shaft hole 4-1-2 is aligned with the pin shaft hole 1-2 of the I-shaped hoisting beam 1 and the pin shaft hole 7-1 of the end plate 7, and is connected by a pin shaft to form a movable hinge. The end plate 4-3 is installed at the two ends of the pin shaft to limit the axial displacement of the pin shaft.

[0037] In addition, the surfaces of all the pin shafts are provided with bushings to reduce the wear of the pin shafts.

[0038] Example 2

[0039] Referring to Figure 8 The hoisting method of the wind power main machine and hub universal lifting device provided by the embodiment comprises:

[0040] According to the weight of the wind power main machine and the hub, the position of the center of gravity and the relative position of the three lifting points, the length of the I-shaped lifting beam is changed, or the length of the legs of the Y-shaped lifting beam is changed, or the leg angle of the Y-shaped lifting beam and the connection length of the support column assembly are adjusted, so that the three lifting belt connection positions of the universal lifting device correspond one by one with the three lifting point positions of the main machine and the hub, and the three-line intersection position of the Y-shaped lifting beam corresponds to the center of gravity position of the main machine and the hub; the positions below the three connection assemblies of the universal lifting device are connected with the three lifting point positions of the main machine and the hub through the lifting belt and the shackle, and the positions above the three connection assemblies of the universal lifting device are connected with the hooks of the crane through the three lifting belts, and in order to ensure that the main machine and the hub are lifted horizontally, the position of the hook needs to be located directly above the center of gravity of the main machine and the hub; at this time, the projection of the center line of the three lifting belts in the horizontal direction is coincided with the three center lines of the Y-shaped lifting beam, and in the static or uniform straight-line driving state, the stress state of the lifting beam remains balanced and only receives the horizontal direction extrusion force, without vertical direction component force, that is, the scheme makes the lifting beam not subjected to bending moment effect; the lifting beam is mainly damaged due to shear and bending, so that the lifting beam is not subjected to bending moment or only subjected to very small bending moment, which can significantly improve the carrying capacity of the lifting beam in the lifting method.

[0041] The above-mentioned embodiments are only the preferred embodiments of the present application, and do not limit the scope of the present application. Any changes made according to the shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A universal hanger for wind turbine main engine and hub, characterized by: The y-shaped support leg is a vertical cam and a horizontal cam, and the cam is connected to the vertical cam by a bolt, and the bolt has a round cam and a hook at the bottom end of the cam. The cam is connected to the support frame by a pin hole, and the cam is connected to the support frame by a pin hole.

2. A universal hanger for wind turbine main engine and hub according to claim 1, characterized in that: The beam body is provided with a plurality of small through holes along the circumference of each large through hole, and the end of the movable leg is provided with an arc-shaped through hole. The beam body and the movable leg are limited in their rotation range by a pin passing through the small through holes and the arc-shaped through hole.

3. The universal hanger for wind turbine main engine and hub according to claim 1, characterized in that: It also includes lifting ears; the lifting ears are installed on the top of the I-shaped hanging beam and the Y-shaped hanging beam, and are used to lift various components.

4. The universal hanger for wind turbine main engine and hub according to claim 1, characterized in that: The connecting assembly at the free end of the straight-shaped hanging beam is provided with a lifting ring, and the lifting ring can be connected to the pin and the lifting belt respectively.

5. The universal hanger for wind turbine main engine and hub according to claim 1, characterized in that: A bushing is provided on the surface of the pin shaft to reduce pin shaft wear.

6. The universal hanger for wind turbine main engine and hub according to claim 1, characterized in that: Each movable leg includes a first leg and a second leg, and the first leg and the second leg are detachably connected via flanges provided on their respective end surfaces.

7. A method for hoisting a universal hoist for a wind turbine main engine and a hub according to any one of claims 1 to 6, characterized in that: The method includes: According to the weight, center of gravity position and relative position of the three lifting points of the wind turbine main engine and hub, change the length of the straight beam, or change the length of the legs of the Y-shaped beam, or adjust the angle of the legs of the Y-shaped beam and the connection length of the support column assembly, so that the three sling connection positions of the universal sling correspond to the projection positions of the three lifting points of the main engine and hub in the horizontal direction, and the intersection position of the three center lines formed by the two legs of the Y-shaped beam and the straight beam corresponds to the center of gravity position of the main engine and hub; the universal sling The three connecting components of the lifting equipment are connected to the three lifting points of the main engine and the hub through lifting straps and shackles below. The three connecting components of the universal lifting equipment are connected to the hook of the crane through three lifting straps above. In order to ensure that the main engine and the hub are lifted horizontally, the position of the hook must be located directly above the center of gravity of the main engine and the hub. At this time, the horizontal projection of the center lines of the three upper lifting straps coincides with the three axial directions of the Y-shaped lifting beam. Through force analysis, it can be concluded that the I-shaped lifting beam and the Y-shaped lifting beam are not subject to bending moment.

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