A hoisting device with multi-point balance control for offshore wind turbine installation

Abstract

The present invention discloses a hoisting device with multi-point balance control for installing an offshore wind turbine, belonging to the field of offshore wind turbine installation. A hoisting device with multi-point balance control for installing an offshore wind turbine includes a hoisting equipment body. A hook is connected to the lower end of the hoisting equipment body, and a balance controller is connected to the lower end of the hook. A multi-chamber regulation cylinder is fixedly connected to the lower end of the balance controller, and a multi-chamber equalization cylinder is fixedly connected to the lower end of the multi-chamber regulation cylinder. Through the cooperation of the hydraulic fine-tuning component and the balance control component, after the gravity lifting rope is tightened and limited by the gravity of the wind turbine blade, the pulling length of the gravity lifting rope can be adjusted, thereby effectively realizing the regulation of the installation position of the wind turbine blade, effectively improving the control accuracy of the hoisting equipment body, and with the cooperation of multiple multi-point grip sleeves, effectively controlling the gravity balance of the wind turbine blade through multi-point connection, improving the passability and installation convenience of the wind turbine blade.

Description

Technical Field

[0001] The present invention relates to the field of installation of offshore wind turbines, and more specifically, to a hoisting device with multi-point balance control for installing offshore wind turbines. Background Art

[0002] Wind power generation is the fastest developing green energy technology in the world. While the construction of onshore wind farms is developing rapidly, people have noticed some limitations in the utilization of onshore wind energy, such as large land occupation area, noise pollution, etc. Due to the rich wind energy resources in the sea and the feasibility of current technologies, the ocean will become a rapidly developing wind power market. With the development and maturity of offshore wind farm technologies, wind power will surely become an important energy source for the sustainable development of China's eastern coastal areas.

[0003] An offshore wind turbine, abbreviated as an offshore wind machine, is a power device that converts wind energy into mechanical work, the mechanical work drives the rotor to rotate, and finally outputs alternating current. A wind turbine generally consists of components such as a wind wheel, a generator (including devices), a yaw device (tail fin), a tower, a speed limit safety mechanism, and an energy storage device. The wind wheel generally consists of a rotor and blades, and the blades capture the wind and transmit the wind power to the rotor axis.

[0004] Offshore wind turbines are mainly installed through an offshore wind power installation ship and the hoisting equipment on the ship. When using the hoisting equipment to hoist the blades, since the blades need to be connected and installed with the rotor to complete the driving of the wind power, it is necessary to ensure that the adjustment angle of the flange threaded holes is aligned with the bolts during hoisting to ensure the effectiveness of the installation. However, in the prior art, the control accuracy of the position adjustment of the blades during hoisting is relatively low, and the control difficulty is relatively large, which is not conducive to the fine adjustment of the installation position of the blades, thereby reducing the construction efficiency. Summary of the Invention

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a hoisting device with multi-point balance control for installing offshore wind turbines. Through the cooperation of a hydraulic fine adjustment component and a balance control component, after the gravity suspension ropes are tightened and limited by the gravity of the wind turbine blades, the pulling length of the gravity suspension ropes can be adjusted by controlling the flow direction of the balanced hydraulic oil, thereby effectively realizing the regulation of the installation position of the wind turbine blades, effectively improving the control accuracy of the hoisting equipment body, reducing the control difficulty, improving the construction efficiency, and effectively controlling the gravity balance of the wind turbine blades through multi-point connection with the cooperation of multiple multi-point grip sleeves, improving the passability and installation convenience of the wind turbine blades.

[0007] 2. Technical Solutions

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A hoisting device with multi-point balance control for installing an offshore wind turbine, comprising a hoisting equipment body. A hook is connected to the lower end of the hoisting equipment body. A balance controller is connected to the lower end of the hook. A multi-chamber regulation cylinder is fixedly connected to the lower end of the balance controller. A multi-chamber equalization cylinder is fixedly connected to the lower end of the multi-chamber regulation cylinder. A plurality of hydraulic fine-tuning components are connected to the outer end of the multi-chamber equalization cylinder. A gravity lifting rope is connected to the lower end of the hydraulic fine-tuning component. A multi-point grip is connected to the lower end of the gravity lifting rope. A multi-point balance support plate is fixedly connected between the plurality of multi-point grips. A pair of automatic claws are arranged at the lower end of the multi-point balance support plate, and a wind turbine blade is clamped inside the automatic claws;

[0010] A plurality of regulation chambers are opened in the multi-chamber regulation cylinder. A plurality of equalization chambers are opened in the multi-chamber equalization cylinder. An oil pressure equalization component matched with the hydraulic fine-tuning component is arranged in the regulation chamber and the equalization chamber. The oil pressure equalization component includes an oil pressure regulation tank. The oil pressure regulation tank is fixedly connected in the regulation chamber. A balance control component is arranged in the oil pressure regulation tank. An oil pressure equalization tank is fixedly connected in the equalization chamber, and the oil pressure equalization tank is communicated with the corresponding oil pressure regulation tank. Equalization hydraulic oil is filled in both the oil pressure regulation tank and the oil pressure equalization tank. Through the cooperation of the hydraulic fine-tuning component and the balance control component, after the gravity lifting rope is tightened and limited by the gravity of the wind turbine blade, the pulling length of the gravity lifting rope can be adjusted by controlling the flow direction of the equalization hydraulic oil, thereby effectively realizing the regulation of the installation position of the wind turbine blade, effectively improving the control accuracy of the hoisting equipment body, reducing the control difficulty, improving the construction efficiency, and effectively controlling the gravity balance of the wind turbine blade through the multi-point connection mode with the cooperation of a plurality of multi-point grips, improving the passability and installation convenience of the wind turbine blade.

[0011] Further, a balance regulation system is arranged in the balance controller. The balance regulation system includes a balance regulation processing unit. The input end of the balance regulation processing unit is connected to the control end of the hoisting equipment body. The output end of the balance regulation processing unit is respectively connected to a gravity regulation unit and a pressure relief control unit. The gravity regulation unit cooperates with the balance control component. The pressure relief control unit cooperates with the hydraulic fine-tuning component. Through the cooperation of the balance regulation system, the regulation efficiency and regulation applicability of the hydraulic fine-tuning component and the balance control component can be improved, and it can effectively cooperate with construction workers to be applicable to different construction environments. While improving the construction efficiency, the environmental applicability of the hydraulic fine-tuning component and the balance control component is also improved.

[0012] Furthermore, the hydraulic fine-tuning assembly includes a hydraulic fine-tuning cylinder. A plurality of hydraulic fine-tuning cylinders corresponding to the equalization cavities are fixedly connected to the outer end of the multi-chamber equalization cylinder, and the hydraulic fine-tuning cylinders are communicated with the oil pressure equalization tank. An oil seal sliding plug is slidably connected in the hydraulic fine-tuning cylinder. A fine-tuning application core cylinder is fixedly connected to the lower end of the oil seal sliding plug. The hydraulic fine-tuning cylinder cooperates with the balance control assembly. By moving the position of the fine-tuning application core cylinder in the hydraulic fine-tuning cylinder, the pulling length of the gravity suspension rope in different point directions is controlled, and then the installation direction of the wind turbine blade is balanced and regulated under the action of the gravity of the wind turbine blade, which not only reduces the control difficulty, but also effectively combines with the wind turbine blade, improving the versatility of hoisting the wind turbine blade.

[0013] Furthermore, a non-twisting ball head grip column is rotatably connected to the lower end of the gravity suspension rope, and the non-twisting ball head grip column is connected to the multi-point grip sleeve. A sealing adapter sleeve is fixedly connected to the upper end of the gravity suspension rope. The lower end of the fine-tuning application core cylinder extends to the outside of the hydraulic fine-tuning cylinder and is fixedly connected to the sealing adapter sleeve. The non-twisting ball head grip column can effectively meet the adjustment of the direction of the multi-point balance support plate when the pulling length of the gravity suspension rope changes, reduce the shear force generated on the gravity suspension rope when the multi-point balance support plate deflects, effectively ensure the pulling balance in the axial direction of the gravity suspension rope, reduce the damage of the gravity suspension rope, improve the service life of the gravity suspension rope, and at the same time reduce the rotation of the wind turbine blade around the gravity direction during adjustment, improving the stability of the wind turbine blade.

[0014] Furthermore, a capacity sliding plug is slidably connected in the fine-tuning application core cylinder. A sealing strip is fixedly connected to the upper end of the capacity sliding plug. The sealing strip extends to the upper side of the oil seal sliding plug and is slidably connected to the oil seal sliding plug. A pressure relief inductive strip is fixedly connected to the lower end of the capacity sliding plug, and the lower end of the pressure relief inductive strip is fixedly connected to the lower inner wall of the fine-tuning application core cylinder. When the equalization hydraulic oil adjusts the displacement of the fine-tuning application core cylinder, the ratio of the equalization hydraulic oil flow rate to the displacement amount of the fine-tuning application core cylinder can be adjusted through the cooperation of the capacity sliding plug and the sealing strip, thereby increasing the adjustment range of the fine-tuning application core cylinder, further enhancing the accuracy of the adjustment of the installation position of the wind turbine blade, and reducing the hoisting difficulty of the wind turbine blade.

[0015] Furthermore, a plurality of guide wires are fixedly connected to the lower end of the capacity sliding plug outside the pressure relief inductive strip. An auxiliary elastic sleeve is fixedly connected to the lower end of the capacity sliding plug outside the guide wires, and the lower ends of the auxiliary elastic sleeve and the guide wires are both fixedly connected to the lower inner wall of the fine-tuning application core cylinder. The cooperation of the guide wires and the auxiliary elastic sleeve can assist in supporting the oil pressure borne by the capacity sliding plug, improving the compression strength of the capacity sliding plug, and thus improving the adjustment effect of the capacity sliding plug.

[0016] Further, the balance control component includes a partition oil seal plate. The partition oil seal plate on the outer side of the displacement oil pressure control tank is fixedly connected inside the regulation cavity. One end of the partition oil seal plate close to the oil pressure control tank is slidably connected with a counterweight oil pressure plate, and the counterweight oil pressure plate is fixedly connected to the upper end of the oil pressure control tank. The inner wall of the lower part of the regulation cavity is fixedly connected with a balance control air bag located outside the partition oil seal plate. Through the cooperation of the balance control air bag and the counterweight oil pressure plate, the oil volume in the oil pressure control tank can be controlled, so as to facilitate the control of the flow direction of the hydraulic oil, improve the effectiveness of the oil pressure balance, and regulate the pulling length of the gravity suspension rope by means of the oil pressure balance in cooperation with the gravity of the fan blade, effectively maintaining the linkage between the gravity suspension rope and the fan blade and improving the sensitivity of the fan blade regulation.

[0017] Further, a limiting oil separation ring located above the counterweight oil pressure plate is fixedly connected to one end of the partition oil seal plate close to the oil pressure control tank. A guiding hole is opened at the upper end of the partition oil seal plate. A supporting column is fixedly connected to the inner wall of the lower part of the guiding hole. An arc-shaped guiding groove is fixedly connected to the upper end of the supporting column. A linkage sliding bar is slidably connected to the upper end of the arc-shaped guiding groove.

[0018] Further, a counterweight air pressure plate is fixedly connected to the upper end of the balance control air bag, and the counterweight air pressure plate is slidably connected with the partition oil seal plate. The two ends of the linkage sliding bar are respectively fixedly connected between the counterweight air pressure plate and the counterweight oil pressure plate. An air pressure regulation thin tube is fixedly connected to the outer end of the balance control air bag and is communicated with it. The outer end of the air pressure regulation thin tube penetrates through the multi-chamber regulation cylinder and cooperates with the hydraulic fine-tuning component. By connecting the balance control air bag and the hydraulic fine-tuning cylinder through the air pressure regulation thin tube, when the balance control air bag is magnetically regulated, the air pressure balance can be used to assist in regulating the fine-tuning applicable core cylinder. While effectively maintaining the oil pressure regulation of the oil pressure balance component, the action precision and smoothness of the fine-tuning applicable core cylinder are maintained, effectively avoiding the reduction of the adjustability of the fine-tuning applicable core cylinder due to the influence of the gravity of the fan blade. The pulling length of the gravity suspension rope is controlled by the gravity balance of the fan blade and the oil pressure balance of the oil pressure balance component. The pulling effectiveness of the gravity suspension rope is maintained by the air pressure balance of the balance control component. Therefore, while effectively ensuring the regulation of the installation position of the fan blade, the pulling effectiveness of the gravity suspension rope is effectively maintained, the pulling force on the fan blade is maintained, and the cooperation strength between the hydraulic fine-tuning component and the oil pressure balance component is improved.

[0019] Further, a plurality of electromagnetic control strips are fixedly connected to the inner wall of the lower part of the balance control air bag, and a plurality of strong magnetic adsorption strips are fixedly connected to the inner wall of the upper part of the balance control air bag. A plurality of magnetic conduction strips are directly fixedly connected between the electromagnetic control strips and the strong magnetic adsorption strips.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] (1) Through the cooperation of the hydraulic fine-tuning component and the balance control component, after the gravity suspension rope is tightened and limited by the gravity of the wind turbine blade, the pulling length of the gravity suspension rope can be adjusted by controlling the flow direction of the balanced hydraulic oil, thereby effectively realizing the control of the installation position of the wind turbine blade, effectively improving the control accuracy of the hoisting equipment body, reducing the control difficulty, improving the construction efficiency, and effectively controlling the gravity balance of the wind turbine blade through the multi-point connection method with the cooperation of multiple multi-point grip sleeves, improving the passability and installation convenience of the wind turbine blade.

[0023] (2) Through the cooperation of the balance control system, the control efficiency and applicability of the hydraulic fine-tuning component and the balance control component can be improved, which can effectively cooperate with the construction personnel to be applicable to different construction environments. While improving the construction efficiency, it also improves the environmental applicability of the hydraulic fine-tuning component and the balance control component.

[0024] (3) By adjusting the position of the fine-tuning adapter core cylinder in the hydraulic fine-tuning cylinder, the pulling length of the gravity suspension rope in different point directions can be controlled, and then the installation direction of the wind turbine blade can be balanced and controlled under the action of the gravity of the wind turbine blade, which not only reduces the control difficulty, but also effectively combines with the wind turbine blade to improve the versatility of hoisting the wind turbine blade.

[0025] (4) When the balanced hydraulic oil regulates the displacement of the fine-tuning adapter core cylinder, the ratio of the flow rate of the balanced hydraulic oil to the displacement of the fine-tuning adapter core cylinder can be regulated through the cooperation of the capacity slide plug and the sealing strip, thereby increasing the regulation range of the fine-tuning adapter core cylinder, further enhancing the accuracy of controlling the installation position of the wind turbine blade, and reducing the hoisting difficulty of the wind turbine blade.

[0026] (5) Through the cooperation of the balance control airbag and the weight pressing oil plate, the oil volume in the oil pressure regulating tank can be controlled, thereby facilitating the control of the flow direction of the balanced hydraulic oil, improving the effectiveness of oil pressure balance, and regulating the pulling length of the gravity suspension rope by using the oil pressure balance method under the cooperation of the gravity of the wind turbine blade, effectively maintaining the linkage between the gravity suspension rope and the wind turbine blade, and improving the sensitivity of wind turbine blade control.

[0027] (6) By connecting the balance control airbag and the hydraulic fine-tuning cylinder through the air pressure distribution thin tube, when the balance control airbag is magnetically regulated, the fine-tuning adapter core cylinder can be assisted in regulation by using air pressure balance, while effectively maintaining the oil pressure regulation of the oil pressure balance component, maintaining the action accuracy and smoothness of the fine-tuning adapter core cylinder, and effectively avoiding reducing the adjustability of the fine-tuning adapter core cylinder due to the influence of the gravity of the wind turbine blade.

[0028] (7) Control the pulling length of the gravity suspension rope by using the gravity balance of the fan blade and the oil pressure balance of the oil pressure equalization component, and maintain the pulling effectiveness of the gravity suspension rope by using the air pressure balance of the balance control component. Furthermore, while effectively ensuring the regulation of the installation position of the fan blade, the pulling effectiveness of the gravity suspension rope is effectively maintained, the pulling force on the fan blade is maintained, and the cooperation strength of the hydraulic fine-tuning component and the oil pressure equalization component is improved. Description of the Drawings

[0029] Figure 1 Front view structural schematic diagram of the hoisting equipment body of the present invention;

[0030] Figure 2 Structural schematic diagram of the control flow of the balance regulation system of the present invention;

[0031] Figure 3 Axonometric structural schematic diagram of the balance controller of the present invention;

[0032] Figure 4 Front view sectional structural schematic diagram of the balance controller of the present invention;

[0033] Figure 5 Front view sectional structural schematic diagram of the oil pressure equalization component of the present invention;

[0034] Figure 6 Of the present invention Figure 5 Schematic diagram of the structure at position A in;

[0035] Figure 7 Front view sectional structural schematic diagram of the hydraulic fine-tuning component of the present invention;

[0036] Figure 8 Front view sectional structural schematic diagram of the balance control air bag of the present invention;

[0037] Figure 9 Front view structural schematic diagram when the fan blade of the present invention is fine-tuned.

[0038] Explanation of the reference numerals in the drawings:

[0039] 1 Hoisting equipment body, 101 Hook, 2 Balance controller, 201 Multi-chamber regulation cylinder, 202 Multi-chamber equalization cylinder, 3 Multi-point balance support plate, 301 Automatic claw, 4 Gravity lifting rope, 401 Anti-twist ball head grip post, 402 Sealed adapter sleeve, 5 Hydraulic fine-tuning component, 501 Hydraulic fine-tuning cylinder, 502 Oil seal sliding plug, 503 Fine-tuning applicable core cylinder, 5031 Pressure relief inductance strip, 5032 Auxiliary elastic sleeve, 5033 Guide wire, 5034 Capacity sliding plug, 5035 Plugging strip, 6 Oil pressure equalization component, 601 Oil pressure regulation tank, 602 Oil pressure equalization tank, 603 Equalization hydraulic oil, 7 Balance control component, 701 Partition oil seal plate, 7011 Limit oil separation ring, 7012 Pilot hole, 7013 Support post, 7014 Arc guide groove, 702 Counterweight pressure oil plate, 703 Linkage sliding bar, 704 Balance control air bag, 7041 Counterweight pressure air plate, 7042 Air pressure distribution fine tube, 7043 Electromagnetic control strip, 7044 Strong magnetic adsorption strip, 7045 Magnetic conduction strip, 8 Multi-point grip sleeve, 10 Wind turbine blade. Detailed implementation mode

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0043] Embodiment 1:

[0044] Please refer to Figures 1-9, a hoisting device with multi-point balance control for offshore wind turbine installation, including the hoisting equipment body 1. A hook 101 is connected to the lower end of the hoisting equipment body 1. A balance controller 2 is connected to the lower end of the hook 101. A multi-chamber regulation cylinder 201 is fixedly connected to the lower end of the balance controller 2. A multi-chamber equalization cylinder 202 is fixedly connected to the lower end of the multi-chamber regulation cylinder 201. A plurality of hydraulic fine-tuning components 5 are connected to the outer end of the multi-chamber equalization cylinder 202. A gravity lifting rope 4 is connected to the lower end of the hydraulic fine-tuning component 5. A multi-point grip 8 is connected to the lower end of the gravity lifting rope 4. A multi-point balance support plate 3 is fixedly connected between the plurality of multi-point grips 8. A pair of automatic claws 301 are arranged at the lower end of the multi-point balance support plate 3, and a wind turbine blade 10 is clamped inside the automatic claws 301;

[0045] A plurality of regulation chambers are opened in the multi-chamber regulation cylinder 201, and a plurality of equalization chambers are opened in the multi-chamber equalization cylinder 202. An oil pressure equalization component 6 that cooperates with the hydraulic fine-tuning component 5 is arranged in the regulation chamber and the equalization chamber. The oil pressure equalization component 6 includes an oil pressure regulation tank 601. The oil pressure regulation tank 601 is fixedly connected in the regulation chamber. A balance control component 7 is arranged in the oil pressure regulation tank 601. An oil pressure equalization tank 602 is fixedly connected in the equalization chamber, and the oil pressure equalization tank 602 is connected to the corresponding oil pressure regulation tank 601. Equalization hydraulic oil 603 is filled in both the oil pressure regulation tank 601 and the oil pressure equalization tank 602. Through the cooperation of the hydraulic fine-tuning component 5 and the balance control component 7, after the gravity lifting rope 4 is tightened and limited by the gravity of the wind turbine blade 10, by controlling the flow direction of the equalization hydraulic oil 603, the pulling length of the gravity lifting rope 4 can be adjusted, thereby effectively realizing the regulation of the installation position of the wind turbine blade 10, effectively improving the control accuracy of the hoisting equipment body 1, reducing the control difficulty, improving the construction efficiency, and effectively controlling the gravity balance of the wind turbine blade 10 through the multi-point connection method with the cooperation of a plurality of multi-point grips 8, improving the passability and installation convenience of the wind turbine blade 10.

[0046] Please refer to Figures 1-4 and Figure 9 , a balance regulation system is arranged in the balance controller 2. The balance regulation system includes a balance regulation processing unit. The input end of the balance regulation processing unit is connected to the control end of the hoisting equipment body 1. The output end of the balance regulation processing unit is respectively connected to a gravity regulation unit and a pressure relief control unit. The gravity regulation unit cooperates with the balance control component 7, and the pressure relief control unit cooperates with the hydraulic fine-tuning component 5. Through the cooperation of the balance regulation system, the regulation efficiency and regulation applicability of the hydraulic fine-tuning component 5 and the balance control component 7 can be improved, and it can effectively cooperate with construction personnel to be applicable to different construction environments. While improving the construction efficiency, it also improves the environmental applicability of the hydraulic fine-tuning component 5 and the balance control component 7.

[0047] Please refer to Figure 4 and Figure 7, the hydraulic fine-tuning assembly 5 includes a hydraulic fine-tuning cylinder 501. A plurality of hydraulic fine-tuning cylinders 501 corresponding to the equalizing cavities are fixedly connected to the outer end of the multi-cavity equalizing cylinder 202, and the hydraulic fine-tuning cylinder 501 is connected to the oil pressure equalizing tank 602. A sealing oil plug 502 is slidably connected in the hydraulic fine-tuning cylinder 501. A fine-tuning application core cylinder 503 is fixedly connected to the lower end of the sealing oil plug 502. The hydraulic fine-tuning cylinder 501 cooperates with the balance control assembly 7. By moving the position of the fine-tuning application core cylinder 503 in the hydraulic fine-tuning cylinder 501, the pulling length of the gravity suspension rope 4 in different point directions is controlled, so as to balance and regulate the installation direction of the fan blade 10 under the action of the gravity of the fan blade 10. This not only reduces the control difficulty, but also effectively combines with the fan blade 10 to improve the versatility of hoisting the fan blade 10.

[0048] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 9 , a non-twisting ball head grip column 401 is rotatably connected to the lower end of the gravity suspension rope 4, and the non-twisting ball head grip column 401 is connected to the multi-point grip sleeve 8. A sealing adapter sleeve 402 is fixedly connected to the upper end of the gravity suspension rope 4. The lower end of the fine-tuning application core cylinder 503 extends to the outside of the hydraulic fine-tuning cylinder 501 and is fixedly connected to the sealing adapter sleeve 402. The non-twisting ball head grip column 401 can effectively meet the adjustment of the direction of the multi-point balance support plate 3 when the pulling length of the gravity suspension rope 4 changes, reduce the shear force generated on the gravity suspension rope 4 when the multi-point balance support plate 3 deflects, effectively ensure the pulling balance in the axial direction of the gravity suspension rope 4, reduce the damage of the gravity suspension rope 4, improve the service life of the gravity suspension rope 4, and at the same time reduce the rotation of the fan blade 10 around the gravity direction during adjustment, and improve the stability of the fan blade 10.

[0049] Please refer to Figure 5 and Figure 7 , a capacity slide plug 5034 is slidably connected in the fine-tuning application core cylinder 503. A sealing strip 5035 is fixedly connected to the upper end of the capacity slide plug 5034. The sealing strip 5035 extends to the upper side of the sealing oil plug 502 and is slidably connected to the sealing oil plug 502. A pressure relief inductive strip 5031 is fixedly connected to the lower end of the capacity slide plug 5034. The pressure relief inductive strip 5031 is made of electroactive polymer composite, and the lower end of the pressure relief inductive strip 5031 is fixedly connected to the lower inner wall of the fine-tuning application core cylinder 503. When the equalizing hydraulic oil 603 adjusts the displacement of the fine-tuning application core cylinder 503, the ratio of the flow rate of the equalizing hydraulic oil 603 to the displacement of the fine-tuning application core cylinder 503 can be regulated through the cooperation of the capacity slide plug 5034 and the sealing strip 5035, so as to improve the regulation range of the fine-tuning application core cylinder 503, further enhance the accuracy of regulating the installation position of the fan blade 10, and reduce the hoisting difficulty of the fan blade 10.

[0050] Please refer to Figure 7, a plurality of guide wires 5033 are fixedly connected to the lower end of the capacity slide plug 5034 outside the pressure relief inductive strip 5031. An auxiliary elastic sleeve 5032 is fixedly connected to the lower end of the capacity slide plug 5034 outside the guide wires 5033. Both the lower ends of the auxiliary elastic sleeve 5032 and the guide wires 5033 are fixedly connected to the lower inner wall of the fine-tuning applicable core cylinder 503. The cooperation of the guide wires 5033 and the auxiliary elastic sleeve 5032 can assist in supporting the oil pressure borne by the capacity slide plug 5034, improve the compressive strength of the capacity slide plug 5034, and thus improve the regulation effect of the capacity slide plug 5034.

[0051] Please refer to Figures 4-6 and Figure 8 , the balance control assembly 7 includes a partition oil-sealing plate 701. The partition oil-sealing plate 701 is fixedly connected inside the regulation cavity outside the displacement oil pressure regulation tank 601. A counterweight oil pressure plate 702 is slidably connected to one end of the partition oil-sealing plate 701 close to the oil pressure regulation tank 601, and the counterweight oil pressure plate 702 is fixedly connected to the upper end of the oil pressure regulation tank 601. The lower inner wall of the regulation cavity is fixedly connected with a balance control air bag 704 outside the partition oil-sealing plate 701. Through the cooperation of the balance control air bag 704 and the counterweight oil pressure plate 702, the amount of oil in the oil pressure regulation tank 601 can be controlled, and then it is convenient to control the flow direction of the hydraulic oil 603 to improve the effectiveness of oil pressure balance. With the cooperation of the gravity of the fan blade 10, the pulling length of the gravity suspension rope 4 is regulated by the way of oil pressure balance, effectively maintaining the linkage between the gravity suspension rope 4 and the fan blade 10 and improving the sensitivity of the regulation of the fan blade 10.

[0052] Please refer to Figure 4 and Figure 5 , a limit oil-separating ring 7011 is fixedly connected to one end of the partition oil-sealing plate 701 close to the oil pressure regulation tank 601 above the counterweight oil pressure plate 702. A lead hole 7012 is opened in the upper end of the partition oil-sealing plate 701. A support column 7013 is fixedly connected to the lower inner wall of the lead hole 7012. The upper end of the support column 7013 is fixedly connected with an arc-shaped guide groove 7014. A linkage slide bar 703 is slidably connected to the upper end of the arc-shaped guide groove 7014. Please refer to Figure 8 , a plurality of electromagnetic control bars 7043 are fixedly connected to the lower inner wall of the balance control air bag 704, and a plurality of strong magnetic adsorption bars 7044 are fixedly connected to the upper inner wall of the balance control air bag 704. A plurality of magnetic conduction bars 7045 are directly fixedly connected between the electromagnetic control bars 7043 and the strong magnetic adsorption bars 7044.

[0053] Please refer to Figures 4-6 and Figure 8, a counterweight air pressure plate 7041 is fixedly connected to the upper end of the balance control airbag 704, and the counterweight air pressure plate 7041 is slidably connected to the partition oil sealing plate 701. The two ends of the linkage slide bar 703 are fixedly connected between the counterweight air pressure plate 7041 and the counterweight oil pressure plate 702. An air pressure regulating thin tube 7042 that is communicated with it is fixedly connected to the outer end of the balance control airbag 704. The outer end of the air pressure regulating thin tube 7042 penetrates through the multi-chamber regulating cylinder 201 and is matched with the hydraulic fine-tuning assembly 5. The balance control airbag 704 and the hydraulic fine-tuning cylinder 501 are connected through the air pressure regulating thin tube 7042. Then, when the balance control airbag 704 is magnetically regulated, the air pressure balance can be used to assist in regulating the fine-tuning applicable core barrel 503. While effectively maintaining the oil pressure regulation of the oil pressure balance assembly 6, the action accuracy and smoothness of the fine-tuning applicable core barrel 503 are maintained, and the adjustability of the fine-tuning applicable core barrel 503 is effectively prevented from being reduced due to the gravity influence of the fan blade 10. The pulling length of the gravity suspension rope 4 is controlled by using the gravity balance of the fan blade 10 and the oil pressure balance of the oil pressure balance assembly 6. The pulling effectiveness of the gravity suspension rope 4 is maintained by using the air pressure balance of the balance control assembly 7. Then, while effectively ensuring the regulation of the installation position of the fan blade 10, the pulling effectiveness of the gravity suspension rope 4 is effectively maintained, the pulling force on the fan blade 10 is maintained, and the cooperation strength of the hydraulic fine-tuning assembly 5 and the oil pressure balance assembly 6 is improved.

[0054] Please refer to Figures 1-9, when hoisting an offshore wind turbine, the main body 1 of the hoisting equipment is connected to the balance controller 2 through the hook 101. The automatic claw 301 grabs the wind turbine blade 10, and then the wind turbine blade 10 is lifted by the control of the main body 1 of the hoisting equipment and moved to the position where installation is required. When the wind turbine blade 10 is connected to the rotor, the installation position of the wind turbine blade 10 needs to be adjusted to keep the adjustment angle of the flange threaded hole aligned with the bolt. The construction personnel can send an adjustment command to the balance control processing unit in the balance controller 2 through the control terminal of the main body 1 of the hoisting equipment. After receiving the control command, the balance control processing unit processes and converts it, and then conveys the control data to the gravity control unit, so that the gravity control unit adjusts the voltage of the electromagnetic control bar 7043 in the balance control airbag 704, causing the balance control airbag 704 to generate corresponding actions, thereby controlling the corresponding displacement of the fine-tuning applicable core barrel 503, and further facilitating the control of the pulling length of the gravity lifting rope 4. If it is necessary to adjust the displacement amount of the fine-tuning applicable core barrel 503, the balance control processing unit conveys the control data to the pressure relief control unit, so that the pressure relief control unit conducts on-off control of the pressure relief inductance bar 5031 in the fine-tuning applicable core barrel 503, causing the capacity sliding plug 5034 to displace, and relieving the pressure of the balanced hydraulic oil 603 in the oil pressure control tank 601 and the oil pressure equalizing tank 602, thereby changing the displacement amount of the fine-tuning applicable core barrel 503 under a certain flow rate of the balanced hydraulic oil 603. Through the cooperation of the hydraulic fine-tuning assembly 5 and the balance control assembly 7, after the gravity lifting rope 4 is tightened and limited by the gravity of the wind turbine blade 10, the pulling length of the gravity lifting rope 4 can be adjusted by controlling the flow direction of the balanced hydraulic oil 603, thereby effectively realizing the control of the installation position of the wind turbine blade 10, effectively improving the control accuracy of the main body 1 of the hoisting equipment, reducing the control difficulty, improving the construction efficiency, and with the cooperation of multiple multi-point grip sleeves 8, effectively controlling the gravity balance of the wind turbine blade 10 through the multi-point connection method, improving the passability and installation convenience of the wind turbine blade 10;

[0055] When the electromagnetic control bar 7043 is energized, by increasing the current intensity in the electromagnetic control bar 7043, the magnetic force of the electromagnetic control bar 7043 is increased. The magnetic force generated by it and the strong magnetic adsorption bar 7044 are of opposite magnetic poles. The attracting magnetic force will resist the gravity of the limit oil separation ring 7011, causing the counterweight air pressure plate 7041 to move downward, and through the action of the linkage slider 703, pulling the limit oil separation ring 7011 upward, causing the balance control air bag 704 to be compressed, the oil pressure regulation tank 601 to expand, and the oil pressure regulation tank 601 to generate suction, absorbing the balanced hydraulic oil 603 in the oil pressure balance tank 602 and the hydraulic fine-tuning cylinder 501, reducing the pressure of the balanced hydraulic oil 603 on the oil seal sliding plug 502. Under the action of the oil pressure suction, the fine-tuning applicable core cylinder 503 moves upward, shortening the pulling strength of the gravity suspension rope 4, and the balance control air bag 704 continuously contracts, and can convey gas into the hydraulic fine-tuning cylinder 501 through the air pressure distribution thin tube 7042, causing the air pressure to lift the oil seal sliding plug 502, and the fine-tuning applicable core cylinder 503 and the oil seal sliding plug 502 move upward. Through the dual action of air pressure and oil pressure, while shortening the pulling strength of the gravity suspension rope 4, it can also effectively resist the gravity of the fan blade 10, improving the stability of the regulation; after the electromagnetic control bar 7043 is powered off, the magnetic attraction generated by the electromagnetic control bar 7043 on the strong magnetic adsorption bar 7044 disappears. Due to the self-weight of the fan blade 10, a downward pressure will be generated on the fine-tuning applicable core cylinder 503 through the gravity suspension rope 4, causing the fine-tuning applicable core cylinder 503 to move downward, extending the pulling length of the gravity suspension rope 4. At this time, the movement of the fine-tuning applicable core cylinder 503 causes the hydraulic fine-tuning cylinder 501 to generate suction, absorbing the balanced hydraulic oil 603 in the oil pressure balance tank 602 and the oil pressure regulation tank 601, causing the oil pressure regulation tank 601 to contract, the limit oil separation ring 7011 to move downward, pulling the counterweight air pressure plate 7041 through the linkage slider 703, causing the balance control air bag 704 to expand and generate air suction, absorbing the gas in the hydraulic fine-tuning cylinder 501 through the air pressure distribution thin tube 7042, reducing the resistance of the gas in the hydraulic fine-tuning cylinder 501 to the oil seal sliding plug 502, and further improving the movement effect of the fine-tuning applicable core cylinder 503. Using the gravity balance of the fan blade 10 and the oil pressure balance of the oil pressure balance component 6 to control the pulling length of the gravity suspension rope 4, and using the air pressure balance of the balance control component 7 to maintain the pulling effectiveness of the gravity suspension rope 4, thereby effectively ensuring the regulation of the installation position of the fan blade 10 while effectively maintaining the pulling effectiveness of the gravity suspension rope 4, maintaining the pulling force on the fan blade 10, and improving the cooperation strength of the hydraulic fine-tuning component 5 and the oil pressure balance component 6;When the balanced hydraulic oil 603 enters the hydraulic fine-tuning cylinder 501 and squeezes the oil seal sliding plug 502, the energized shrinkage of the pressure relief inductive strip 5031 will cause the capacity sliding plug 5034 and the sealing strip 5035 to slide downward in the fine-tuning applicable core cylinder 503, enabling the balanced hydraulic oil 603 to enter the fine-tuning applicable core cylinder 503, increasing the oil storage capacity of the hydraulic fine-tuning cylinder 501 and the fine-tuning applicable core cylinder 503, and thereby changing the displacement of the fine-tuning applicable core cylinder 503; it should be noted that when hoisting the wind turbine blade 10, the electromagnetic control strip 7043 is in an energized state to maintain the pulling strength of the gravity lifting rope 4 while ensuring the two-way adjustability of the fine-tuning applicable core cylinder 503.

[0056] The above are only the preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improved concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A hoisting device with multi-point balance control for installing an offshore wind turbine, comprising a hoisting equipment body (1), and a hook (101) is connected to the lower end of the hoisting equipment body (1), characterized in that: A balance controller (2) is connected to the lower end of the hook (101). A multi-chamber regulation cylinder (201) is fixedly connected to the lower end of the balance controller (2). A multi-chamber equalization cylinder (202) is fixedly connected to the lower end of the multi-chamber regulation cylinder (201). A plurality of hydraulic fine-tuning components (5) are connected to the outer end of the multi-chamber equalization cylinder (202). A gravity lifting rope (4) is connected to the lower end of the hydraulic fine-tuning component (5). A multi-point grip sleeve (8) is connected to the lower end of the gravity lifting rope (4). A multi-point balance support plate (3) is fixedly connected between the plurality of multi-point grip sleeves (8). A pair of automatic claws (301) are arranged at the lower end of the multi-point balance support plate (3), and a fan blade (10) is clamped inside the automatic claw (301); A plurality of regulation chambers are formed in the multi-chamber regulation cylinder (201). A plurality of equalization chambers are formed in the multi-chamber equalization cylinder (202). An oil pressure equalization component (6) that cooperates with the hydraulic fine-tuning component (5) is arranged in the regulation chambers and the equalization chambers. The oil pressure equalization component (6) includes an oil pressure regulation tank (601). The oil pressure regulation tank (601) is fixedly connected in the regulation chamber. A balance control component (7) is arranged in the oil pressure regulation tank (601). An oil pressure equalization tank (602) is fixedly connected in the equalization chamber, and the oil pressure equalization tank (602) is communicated with the corresponding oil pressure regulation tank (601). Equalization hydraulic oil (603) is filled in both the oil pressure regulation tank (601) and the oil pressure equalization tank (602); The balance control component (7) includes a partition oil-sealing plate (701). The partition oil-sealing plate (701) is fixedly connected in the regulation chamber on the outer side of the oil pressure regulation tank (601). A counterweight oil-pressing plate (702) is slidably connected to one end of the partition oil-sealing plate (701) close to the oil pressure regulation tank (601), and the counterweight oil-pressing plate (702) is fixedly connected to the upper end of the oil pressure regulation tank (601). A balance control air bag (704) is fixedly connected to the lower inner wall of the regulation chamber on the outer side of the partition oil-sealing plate (701); A limit oil-separating ring (7011) is fixedly connected to one end of the partition oil-sealing plate (701) close to the oil pressure regulation tank (601) and on the upper side of the counterweight oil-pressing plate (702). A lead hole (7012) is formed in the upper end of the partition oil-sealing plate (701). A support column (7013) is fixedly connected to the lower inner wall of the lead hole (7012). An arc-shaped guiding groove (7014) is fixedly connected to the upper end of the support column (7013). A linkage sliding bar (703) is slidably connected to the upper end of the arc-shaped guiding groove (7014); The upper end of the balance control airbag (704) is fixedly connected with a counterweight air compression plate (7041), and the counterweight air compression plate (7041) is slidably connected with the partition oil sealing plate (701). Both ends of a linkage slide bar (703) are fixedly connected between the counterweight air compression plate (7041) and the counterweight oil compression plate (702). The outer end of the balance control airbag (704) is fixedly connected with a pneumatic pressure regulating thin tube (7042) communicated therewith. The outer end of the pneumatic pressure regulating thin tube (7042) penetrates through the multi-chamber regulating cylinder (201) and is matched with the hydraulic fine-tuning assembly (5). A plurality of electromagnetic control strips (7043) are fixedly connected to the lower inner wall of the balance control airbag (704), and a plurality of strong magnetic adsorption strips (7044) are fixedly connected to the upper inner wall of the balance control airbag (704). A plurality of magnetic conduction strips (7045) are directly fixedly connected between the electromagnetic control strips (7043) and the strong magnetic adsorption strips (7044).

2. The hoisting device with multi-point balance control for installing an offshore wind turbine according to claim 1, characterized in that: A balance control system is arranged in the balance controller (2). The balance control system includes a balance control processing unit. The input end of the balance control processing unit is connected with the control end of the hoisting equipment body (1). The output end of the balance control processing unit is respectively connected with a gravity control unit and a pressure relief control unit. The gravity control unit is matched with the balance control assembly (7), and the pressure relief control unit is matched with the hydraulic fine-tuning assembly (5).

3. The hoisting device with multi-point balance control for installing an offshore wind turbine according to claim 1, wherein: The hydraulic fine-tuning assembly (5) includes a hydraulic fine-tuning cylinder (501). A plurality of hydraulic fine-tuning cylinders (501) corresponding to the balance chambers are fixedly connected to the outer end of the multi-chamber balance cylinder (202), and the hydraulic fine-tuning cylinder (501) is communicated with the oil pressure balance tank (602). An oil seal sliding plug (502) is slidably connected in the hydraulic fine-tuning cylinder (501). The lower end of the oil seal sliding plug (502) is fixedly connected with a fine-tuning application core cylinder (503). The hydraulic fine-tuning cylinder (501) is matched with the balance control assembly (7).

4. A hoisting device with multi-point balance control for installing an offshore wind turbine according to claim 3, characterized in that: The lower end of the gravity lifting rope (4) is rotatably connected with an anti-twist ball head grip column (401), and the anti-twist ball head grip column (401) is connected with the multi-point grip sleeve (8). The upper end of the gravity lifting rope (4) is fixedly connected with a sealing adapter sleeve (402). The lower end of the fine-tuning application core cylinder (503) extends to the outside of the hydraulic fine-tuning cylinder (501) and is fixedly connected with the sealing adapter sleeve (402).

5. The hoisting device with multi-point balance control for installing an offshore wind turbine according to claim 3, wherein: A capacity sliding plug (5034) is slidably connected in the fine-tuning application core cylinder (503). The upper end of the capacity sliding plug (5034) is fixedly connected with a sealing strip (5035). The sealing strip (5035) extends to the upper side of the oil seal sliding plug (502) and is slidably connected with the oil seal sliding plug (502). The lower end of the capacity sliding plug (5034) is fixedly connected with a pressure relief inductive strip (5031), and the lower end of the pressure relief inductive strip (5031) is fixedly connected with the lower inner wall of the fine-tuning application core cylinder (503).

6. The hoisting device with multi-point balance control for installing an offshore wind turbine according to claim 5, characterized in that: A plurality of guiding wires (5033) are fixedly connected to the lower end of the capacity sliding plug (5034) and are located outside the pressure relief inductance strip (5031). An auxiliary elastic sleeve (5032) is fixedly connected to the lower end of the capacity sliding plug (5034) and is located outside the guiding wires (5033). The lower ends of both the auxiliary elastic sleeve (5032) and the guiding wires (5033) are fixedly connected to the lower inner wall of the fine-tuning applicable core cylinder (503).

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