Assembling and locking device, tower and wind generating set

Abstract

The invention relates to an assembling and locking device, a tower and a wind generating set, the assembling and locking device comprises a first locking assembly and a second locking assembly, the first locking assembly comprises a first mounting part and a guide structure arranged on the first mounting part, and the first mounting part can be connected with one of two adjacent tower tube sections; the second locking assembly is arranged opposite to the first locking assembly in the first direction, the second locking assembly comprises a second mounting part and a locking structure arranged on the second mounting part, and the second mounting part can be connected with the other one of the two adjacent tower drum sections; the assembly locking device can be switched between a locking state and an unlocking state, in the locking state, the guide structure partially extends into the second mounting part and is clamped with the locking structure, and the relative positions of the first locking assembly and the second locking assembly are fixed; and in the unlocking state, the locking structure releases the guide structure, and the first locking assembly and the second locking assembly can be separately arranged. The butt joint of the tower can be facilitated, and the construction difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind power, and in particular to an assembly locking device, a tower and a wind power generator set. Background Art

[0002] As wind turbines have officially entered the era of parity, the state has cancelled subsidies for grid-connected electricity prices, and domestic equipment manufacturers are trying to reduce the cost of their equipment. In order to reduce the cost of equipment, all equipment manufacturers are innovating technology to increase the capacity of a single unit, so domestic wind turbines are gradually developing towards large capacity.

[0003] At the same time, as the offshore project areas are gradually developed and saturated, offshore wind power projects are gradually developing towards the deep sea, and the operating water depth of the projects will develop towards the sea areas above 70 meters or even above 100 meters. For offshore wind turbines in the deep sea, the foundation form will use floating foundations.

[0004] At present, the construction process of floating units is mainly to assemble the wind turbines onto the floating foundation by crane at the dock, and then transport them to the machine site by wet dragging. Due to the high weight and height of affordable large-capacity units, there are currently no larger and more suitable cranes on the market that can assemble large-capacity units at the dock. Even if crane resources exist, the carrying capacity of the dock is very limited. There are very few docks in China that can meet such a large carrying capacity. Therefore, in order to reduce the construction cost of the unit, the best way is to install the unit at the offshore machine site.

[0005] As the water depth in far-flung seas becomes deeper and deeper, when the water depth exceeds 80 meters, only large floating cranes can be used to install the units. The current tower structure of wind turbines is not conducive to assembly at offshore units, and the construction is difficult. Summary of the invention

[0006] The embodiment of the present invention provides an assembly locking device, a tower and a wind turbine generator set. The assembly locking device can facilitate the assembly of the tower and reduce the difficulty of construction.

[0007] On the one hand, according to an embodiment of the present invention, an assembly locking device is proposed for a tower, the tower comprising more than two stacked tower sections, the assembly locking device comprising: a first locking component, comprising a first mounting portion and a guide structure arranged on the first mounting portion, the first mounting portion being capable of being connected to one of two adjacent tower sections; a second locking component, arranged opposite to the first locking component in a first direction, the second locking component comprising a second mounting portion and a locking structure arranged on the second mounting portion, the second mounting portion being capable of being connected to the other of the two adjacent tower sections; wherein the assembly locking device can be switched between a locked state and an unlocked state; in the locked state, the guide structure partially extends into the second mounting portion and engages with the locking structure, and the relative positions of the first locking component and the second locking component are fixed; in the unlocked state, the locking structure releases the guide structure, and the first locking component and the second locking component can be separately arranged.

[0008] According to one aspect of an embodiment of the present invention, the first mounting portion and the second mounting portion are respectively annular structures, the number of guide structures and the number of locking structures are both more than two and are arranged one to one, and along the circumference of the first mounting portion, a plurality of guide structures are distributed at intervals on the first mounting portion, and a plurality of locking structures are distributed at intervals on the second mounting portion.

[0009] According to one aspect of an embodiment of the present invention, the guide structure is provided with a first mounting portion protruding along a first direction toward the side where the second locking component is located, a card slot is provided on the guide structure, and a mounting slot is provided on the second mounting portion; in a locked state, the guide structure extends into the mounting slot, and the locking structure partially extends into the card slot; in an unlocked state, the locking structure is separated from the card slot, and the guide structure has freedom of movement in the first direction.

[0010] According to one aspect of an embodiment of the present invention, the guiding structure includes a first shaft segment and a second shaft segment distributed along a first direction, the first shaft segment is connected between the second shaft segment and a first mounting portion, the radial dimension of the second shaft segment on the side facing the first shaft segment in the first direction is greater than the radial dimension of the first shaft segment, and the first shaft segment, the second shaft segment and the first mounting portion enclose a groove.

[0011] According to one aspect of an embodiment of the present invention, a plurality of slide grooves respectively connected to the mounting grooves are arranged on the second mounting portion, and the locking structure includes a plurality of locking blocks and a first elastic member, each locking block is arranged in one of the slide grooves and is movably connected to the second mounting portion, the first elastic member is connected between the locking block and the second mounting portion, and the length of the first elastic member in the second direction is adjustable, and the second direction intersects with the first direction.

[0012] According to one aspect of an embodiment of the present invention, the surface of the locking block facing away from the first elastic member in the second direction is an arc-shaped surface. In the locked state, each locking block extends into the slot of the guiding structure along the second direction and each arc-shaped surface is spliced ​​in sequence and enclosed to form a circular hole.

[0013] According to one aspect of an embodiment of the present invention, the locking structure also includes a positioning portion, a first slot and a second slot connected to the slide slot are provided on the second mounting portion, along the second direction, the first slot is located between the second slot and the mounting slot, a through hole extending along the first direction is provided on the locking block, the positioning portion is inserted into the through hole and has freedom of movement relative to the locking block; in the locked state, the positioning portion protrudes from the locking block along the first direction and extends into the first slot; in the unlocked state, the positioning portion protrudes from the locking block along the first direction and extends into the second slot.

[0014] According to one aspect of the embodiment of the present invention, the locking structure further includes a second elastic member, which is disposed in the through hole and connected between the locking block and the positioning portion to drive the positioning portion to move along the first direction.

[0015] According to one aspect of an embodiment of the present invention, the through hole includes a first hole segment, a second hole segment and a third hole segment distributed along a first direction, a radial dimension of the second hole segment is greater than a radial dimension of the first hole segment and the third hole segment, a second elastic member is located in the second hole segment and is sleeved on the positioning portion, one end of the second elastic member in the first direction abuts against the second mounting portion, and the other end of the second elastic member in the first direction abuts against an adapter ring connected to the positioning portion.

[0016] According to one aspect of an embodiment of the present invention, the positioning portion is provided with a movable column, and a movable groove extending along the second direction is provided on the second mounting portion, the movable column matches the shape of the movable groove, and the positioning portion and the locking block have a first matching state and a second matching state; in the first matching state, the movable column is located in the movable groove and can move along the second direction with the locking block; in the second matching state, the movable column is separated from the movable groove and extends into the slide groove along the first direction, and the positioning portion is inserted into one of the first slot or the second slot.

[0017] According to one aspect of the embodiment of the present invention, the locking structure includes a plurality of positioning portions, and the plurality of positioning portions are arranged at intervals around the same guiding structure.

[0018] According to one aspect of the embodiment of the present invention, the positioning portion is rod-shaped and protrudes from the second mounting portion in the first direction. The first mounting portion is provided with a strip groove extending in the second direction. In the locked state, the positioning portion extends into the strip groove.

[0019] On the other hand, according to an embodiment of the present invention, there is provided a tower, comprising: a tower section, wherein two or more tower sections are stacked, each tower section comprises a tower body and end flanges arranged on both sides of the tower body on its own axial direction, and the end flanges of two adjacent tower sections are connected by fasteners; the above-mentioned assembly locking device, the first mounting portion is connected to one of the two adjacent tower sections, and the second mounting portion is connected to the other of the two adjacent tower sections.

[0020] According to another aspect of the embodiment of the present invention, the surface of the first mounting portion axially facing the second mounting portion is flush with the top surface of the end flange of the tower section in which it is located, and the surface of the second mounting portion axially facing the first mounting portion is flush with the top surface of the end flange of the tower section in which it is located.

[0021] In yet another aspect, a wind turbine generator set according to an embodiment of the present invention includes the above-mentioned tower.

[0022] According to the assembly locking device, tower and wind turbine generator set provided by the embodiment of the present invention, the assembly locking device is used for the tower, including a first locking component and a second locking component, the first locking component includes a first mounting portion and a guide structure, and the second locking component includes a second mounting portion and a locking structure. When used for the tower, the first mounting portion can be connected to one of the two adjacent tower sections, and the second mounting portion can be connected to the other of the two adjacent tower sections. Since the assembly locking device can be switched between a locked state and an unlocked state, when the two adjacent tower sections are connected, the locking device can be switched to a locked state, at which time the guide structure part extends into the second mounting portion and is engaged with the locking structure, so that the relative positions of the first locking component and the second locking component are fixed, and then the relative positions of the two adjacent tower sections are fixed. At this time, bolts and other fasteners can be installed on the two adjacent tower sections to connect the end flanges of the two. When the tower sections are spliced, there is no risk of misalignment or tipping of the fasteners between the two adjacent tower sections during the installation process due to the influence of the wind turbine foundation on which they are located by the action of the waves, which is conducive to the assembly of the tower and reduces the difficulty of construction. When the tower section needs to be disassembled or maintained, the locking device is kept in a locked state. All fasteners connecting the two adjacent tower sections can be removed first, and then the crane is connected to the upper tower section, and the assembly locking device is switched to an unlocked state. The locking structure releases the guide structure, and the first locking component is separated from the second locking component, thereby allowing the two adjacent tower sections to be separated for easy disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] Figure 1 is a schematic structural diagram of a wind turbine generator set according to an embodiment of the present invention;

[0025] Figure 2 is a partial exploded view of a tower according to an embodiment of the present invention;

[0026] Figure 3 is an exploded schematic diagram of an assembled locking device according to an embodiment of the present invention;

[0027] Figure 4is an isometric view of a first locking assembly according to an embodiment of the present invention;

[0028] Figure 5 is a partial enlarged view of a second locking assembly according to an embodiment of the present invention;

[0029] Figure 6 is a partial structural schematic diagram of a second locking assembly according to an embodiment of the present invention;

[0030] Figure 7 is a side view of a second locking assembly according to an embodiment of the present invention;

[0031] Figure 8 yes Figure 7 The cross-sectional view along the AA direction;

[0032] Fig. 9 yes Figure 8 A partial enlarged view of point B in the middle;

[0033] Fig.10 It is a cross-sectional schematic diagram of a locking block according to an embodiment of the present invention.

[0034] in:

[0035] 100-Assembly locking device;

[0036] 10-first locking assembly; 11-first mounting portion; 111-strip groove; 12-guiding structure; 121-first shaft section; 122-second shaft section; 123-slot;

[0037] 20-second locking assembly; 21-second mounting portion; 211-mounting slot; 212-sliding slot; 213-first slot; 214-second slot; 215-movable slot;

[0038] 22-locking structure;

[0039] 221-locking block; 2211-arc surface; 2212-through hole; 2212a-first hole section; 2212b-second hole section; 2212c-third hole section;

[0040] 222-first elastic member; 223-positioning portion; 2231-moving column;

[0041] 224-second elastic member; 225-adapter ring;

[0042] 1-tower frame; 101-tower section; 101a-tower body; 101b-end flange;

[0043] 2-nacelle; 3-impeller; 301-hub; 302-blade; 4-fan foundation;

[0044] X-first direction; Y-second direction; Z-circumferential direction;

[0045] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0046] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity of the present invention; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the assembly locking device, tower and wind turbine generator set of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0048] As wind turbines have entered the era of parity, the state has cancelled subsidies for grid-connected electricity prices, and domestic equipment manufacturers are trying to reduce the cost of their equipment. In order to reduce the cost of equipment, all equipment manufacturers are innovating technology to increase the capacity of a single unit, so domestic wind turbines are gradually developing towards large capacity. After the parity era, 8MW, 11MW, 12MW, 13MW and even 16MW large megawatt units have appeared on the market, and the size of the units is getting bigger and heavier.

[0049] At the same time, as the offshore project areas are gradually developed and saturated, offshore wind power projects are gradually developing towards the deep sea. The project operating water depth will develop from 20m, 30m to 50m, 70m or even 100m. For offshore wind turbines in the deep sea, the foundation form will use floating foundations. Floating foundations are much higher than fixed foundations in terms of economy and construction difficulty.

[0050] At present, the construction process of floating units is mainly to assemble the wind turbines onto the floating foundation by crane at the dock, and then transport them to the machine site by wet dragging. Due to the high weight and height of affordable large-capacity units, there are currently no larger and more suitable cranes on the market that can assemble large-capacity units at the dock. Even if crane resources exist, the carrying capacity of the dock is very limited. There are very few docks in China that can meet such a large carrying capacity. Therefore, in order to reduce the construction cost of floating units, the best way is to install floating units at offshore machine sites.

[0051] The installation of floating units at sea generally uses a self-elevating platform to lift the units onto the floating foundation. The unit components are a static-to-dynamic docking, which is slightly difficult. As the water depth in deep sea areas becomes deeper and deeper, when the water depth exceeds 80m, only large floating cranes can be used to install the units. The installation of unit components by floating cranes is a dynamic-to-dynamic docking, which is more difficult. The current tower structure of wind turbines is not conducive to the assembly of offshore units, and the construction is difficult.

[0052] like Figure 1 As shown, based on the above problems, an embodiment of the present application provides a wind turbine generator set, including a wind turbine foundation 4, a tower 1, a nacelle 2, a generator and an impeller 3. The tower 1 is connected to the wind turbine foundation 4, the nacelle 2 is arranged at the top of the tower 1, and the generator is arranged in the nacelle 2. In some examples, the generator can be located outside the nacelle 2. Of course, in some examples, the generator can also be located inside the nacelle 2. The impeller 3 includes a hub 301 and a plurality of blades 302 connected to the hub 301. The impeller 3 is connected to the rotor of the generator through the hub 301, thereby driving the rotor to rotate relative to the stator to achieve the power generation demand of the wind turbine generator set.

[0053] The wind turbine foundation 4 may be a floating foundation, and the tower 1 is connected to the floating foundation.

[0054] like Figure 1 as well as Figure 2 As shown, in order to facilitate the construction of wind turbines and reduce the difficulty of docking, an embodiment of the present application further provides a tower 1, which includes more than two tower sections 101, and the more than two tower sections 101 are stacked. Each tower section 101 includes a tube body 101a and end flanges 101b arranged on both sides of the tube body 101a on its own axial direction, and the end flanges 101b of two adjacent tower sections 101 are connected by fasteners.

[0055] In order to ensure the stability of the tower section 101 during docking, reduce the difficulty of docking and improve the safety of docking, an embodiment of the present application further provides an assembly locking device 100, which can be produced and sold as an independent product, and of course, can also be used for the tower 1 and serve as a component of the tower 1. The assembly locking device 100 provided in an embodiment of the present application can facilitate the assembly of the tower 1 and reduce the difficulty of construction.

[0056] like Figures 1 to 5 As shown, an assembly locking device 100 provided in one embodiment of the present application can be used for a tower 1. The assembly locking device 100 includes a first locking assembly 10 and a second locking assembly 20. The first locking assembly 10 includes a first mounting portion 11 and a guide structure 12 disposed on the first mounting portion 11. The first mounting portion 11 can be connected to one of two adjacent tower sections 101. The second locking assembly 20 is arranged opposite to the first locking assembly 10 in the first direction X. The second locking assembly 20 includes a second mounting portion 21 and a locking structure 22 disposed on the second mounting portion 21. The second mounting portion 21 can be connected to the other of the two adjacent tower sections 101. The assembly locking device 100 can be switched between a locked state and an unlocked state. In the locked state, the guide structure 12 partially extends into the second mounting portion 21 and is engaged with the locking structure 22, and the relative positions of the first locking assembly 10 and the second locking assembly 20 are fixed. In the unlocked state, the locking structure 22 releases the guide structure 12, and the first locking assembly 10 and the second locking assembly 20 can be separated.

[0057] The first mounting portion 11 may be an annular structure, or an arcuate structure, etc. In the locked state, the guide structure 12 may protrude from the first mounting portion 11 in the first direction X, and in the unlocked state, the guide structure 12 may protrude from the first mounting portion 11, or may be accommodated in the first mounting portion 11, and may protrude from the first mounting portion 11.

[0058] The second mounting portion 21 may be an annular structure, or an arc-shaped structure. The locking structure 22 may be disposed inside the second mounting portion 21 , or may protrude from the second mounting portion 21 .

[0059] The guide structure 12 and the locking structure 22 can be connected by means of snap connection, etc. Optionally, a snap slot can be provided on one of the locking structure 22 and the guide structure 12, and a retractable snap protrusion can be provided on the other. In the locked state, the snap protrusion can be inserted into the snap slot and snap-locked, and in the unlocked state, the snap protrusion can be separated from the snap slot 123 to achieve unlocking. Of course, this is an optional example, and the locking structure 22 and the guide structure 12 can also be connected by means of electromagnetic adsorption, etc., and connected by means of power-on locking and power-off unlocking, etc., to ensure that the assembled locking device 100 can switch between the locked state and the unlocked state.

[0060] The assembly locking device 100 provided in one embodiment of the present application, when used in a tower 1, can make the first mounting portion 11 connected to one of the two adjacent tower sections 101, and the second mounting portion 21 connected to the other of the two adjacent tower sections 101. Since the assembly locking device 100 can be switched between a locked state and an unlocked state, when the two adjacent tower sections 101 are connected, the assembly locking device 100 can be switched to a locked state, at which time the guide structure 12 partially extends into the second mounting portion 21 and engages with the locking structure 22, so that the relative positions of the first locking assembly 10 and the second locking assembly 20 are fixed, and then the relative positions of the two adjacent tower sections 101 are fixed. At this time, bolts and other fasteners can be installed on the end flanges 101b of the two adjacent tower sections 101 to connect the two, so that when the tower sections 101 are assembled, there is no risk of misalignment or tipping of the fasteners between the two adjacent tower sections 101 during the installation process due to the floating foundation on which they are located being affected by the action of waves, which is conducive to the assembly of the tower and reduces the difficulty of construction.

[0061] When the tower section 101 needs to be disassembled or maintained, the locking state of the assembly locking device 100 is maintained. All the fasteners connecting the two adjacent tower sections 101 can be removed first, and then the crane is connected to the upper tower section 101, and the assembly locking device 100 is switched to the unlocked state. The locking structure 22 releases the guide structure 12, and the first locking component 10 and the second locking component 20 are separated. The two adjacent tower sections 101 can be separated for easy disassembly and maintenance.

[0062] In some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, the first mounting portion 11 and the second mounting portion 21 are respectively annular structures, the number of guide structures 12 and the number of locking structures 22 are both more than two and are arranged one to one, and along the circumferential direction Z of the first mounting portion 11, multiple guide structures 12 are distributed at intervals on the first mounting portion 11, and multiple locking structures 22 are distributed at intervals on the second mounting portion 21.

[0063] In some optional embodiments, the radial dimensions of the first mounting portion 11 and the second mounting portion 21 may be equal. Of course, the radial dimension of one may be larger than the radial dimension of the other, and they may be equal.

[0064] The number of the guiding structures 12 provided on the first mounting portion 11 may be two, three or more, and the plurality of guiding structures 12 are distributed at intervals in the circumferential direction Z of the first mounting portion 11, and may be optionally distributed at intervals and evenly, and the angles between two adjacent guiding structures 12 are equal.

[0065] The number of the locking structures 22 on the second mounting portion 21 may be two, three or more, which may be equal to the number of the guiding structures 12 , and the guiding structures 12 can be locked or unlocked one-to-one.

[0066] The first mounting portion 11 can be sleeved on one of the two adjacent tower sections 101, and the end face of the first mounting portion 11 in the first direction X is flush with the end face of the end flange 101b of the tower section 101, and the corresponding second mounting portion 21 can be sleeved on the other of the two adjacent tower sections 101, and the end face of the second mounting portion 21 in the axial direction is flush with the end face of the end flange 101b of the tower section 101.

[0067] An assembly locking device 100 provided in an embodiment of the present application can achieve multi-point locking of the first locking component 10 and the second locking component 20 in the circumferential direction Z through the above-mentioned configuration, thereby ensuring the stability of the relative positions of the two in the locked state and improving the safety of the tower section 101 during docking.

[0068] Continue reading Figures 3 to 9 As shown, in some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, the guide structure 12 is provided along the first direction X to the side where the second locking component 20 is located, and the first mounting portion 11 is protruded, and a card slot 123 is provided on the guide structure 12, and a mounting slot 211 is provided on the second mounting portion 21. In the locked state, the guide structure 12 extends into the mounting slot 211, and the locking structure 22 partially extends into the card slot 123; in the unlocked state, the locking structure 22 is separated from the card slot 123, and the guide structure 12 has the freedom of movement in the first direction X.

[0069] The slot 123 provided on the guiding structure 12 can be an annular slot, or an arcuate slot. When it is an arcuate slot, the number of the arcuate slots can be one, or multiple. When there are multiple arcuate slots, the multiple arcuate slots are arranged around the same axial interval.

[0070] The locking structure 22 can at least partially match the shape of the slot 123 and extend into the slot 123. The locking structure 22 can control part of its structure to extend into the slot 123 or be separated from the slot 123 through a telescopic cylinder. Of course, elastic parts or the like can also be used to adaptively control part of its structure to extend into the slot 123 or be separated from the slot 123.

[0071] An assembly locking device 100 provided by an embodiment of the present application is provided with a card slot 123 and an installation slot 211, so that when the assembly locking device 100 is installed on two tower sections 101 to be assembled, during the docking process of the two tower sections 101, the guide structure 12 can be extended into the installation slot 211 and cooperate with the locking structure 22, so that the relative position of the tower sections 101 can be locked by the assembly locking device 100 when the docking is completed, even under the condition of shaking of the structure such as the wind turbine foundation 4, there will be no relative displacement between the two tower sections 101 locked by the assembly locking device 100 after docking, and the operator can safely connect the fasteners to the end flanges 101b of the two adjacent tower sections 101, thereby reducing the difficulty of docking and improving the docking efficiency and the safety performance of the operator.

[0072] In some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, the guiding structure 12 includes a first shaft segment 121 and a second shaft segment 122 distributed along a first direction X, the first shaft segment 121 is connected between the second shaft segment 122 and the first mounting portion 11, the radial dimension of the second shaft segment 122 toward the side of the first shaft segment 121 in the first direction X is greater than the radial dimension of the first shaft segment 121, and the first shaft segment 121, the second shaft segment 122 and the first mounting portion 11 are enclosed to form a slot 123.

[0073] Optionally, the first shaft segment 121 and the second shaft segment 122 may be cylindrical, or prismatic, and may be cylindrical, and the formed groove 123 may be an annular groove.

[0074] An assembly locking device 100 provided by an embodiment of the present application, the guide structure 12 adopts the above-mentioned structural form, which is conducive to the cooperation with the locking structure 22, and is conducive to the tower section 101 extending into the installation groove 211 during the docking process, and the formed card groove 123 is in the form of an annular groove, which is conducive to the cooperation with the locking structure 22 to ensure the locking strength.

[0075] In some optional embodiments, the first shaft segment 121 can be a uniform cross-sectional structure in the first direction X, and the second shaft segment 122 can be a truncated cone. In the first direction X, the radial dimension of the second shaft segment 122 toward the first shaft segment 121 is larger than the radial dimension of the second shaft segment 122 away from the first shaft segment 121, so as to facilitate insertion into the second mounting portion 21.

[0076] like Figures 6 to 9 As shown, in some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, a plurality of slide grooves 212 respectively connected to the mounting grooves 211 are arranged on the second mounting portion 21, and the locking structure 22 includes a plurality of locking blocks 221 and a first elastic member 222, each locking block 221 is arranged in one of the slide grooves 212 and is movably connected to the second mounting portion 21, the first elastic member 222 is connected between the locking block 221 and the second mounting portion 21, and the length of the first elastic member 222 in the second direction Y is adjustable, and the second direction Y intersects with the first direction X.

[0077] A plurality of slide grooves 212 may be arranged at intervals around each mounting groove 211 , and an extension direction of each slide groove 212 intersects with the first direction X, and may be perpendicular to the first direction X.

[0078] The first elastic member 222 includes at least one of a spring, an elastic washer, a compressible elastic airbag and the like.

[0079] The shape of the end of the locking block 221 may match the shape of the locking slot 123 .

[0080] The angle between the second direction Y and the first direction X may be 80°-100°, and may be 90°.

[0081] The assembly locking device 100 provided by an embodiment of the present application is provided with a plurality of slide grooves 212 connected to the installation grooves 211, and the corresponding locking blocks 221 and the first elastic members 222. When two adjacent tower sections 101 are spliced, the second shaft section 122 of the guide structure 12 is first inserted into the second installation portion 21 through the installation groove 211. Since the radial dimension of at least part of the second shaft section 122 is larger, the first elastic member 222 is first pushed to be compressed, and the locking block 221 retreats to the inside of the slide groove 212. When the first shaft section 121 is inserted into the area opposite to the locking block 221, since the radial dimension of the first shaft section 121 is smaller than the radial dimension of the second shaft section 122 toward the first shaft section 121, the locking block 221 slides along the slide groove 212 and is inserted into the card slot 123 under the action of the first elastic member 222, thereby locking the guide structure 12 and switching the assembly locking device 100 to a locked state. The locking is simple and the response is quick.

[0082] In some optional embodiments, an assembly locking device 100 is provided in one embodiment of the present application, wherein the surface of the locking block 221 facing away from the elastic member in the second direction Y is an arc-shaped surface 2211, and in the locked state, each locking block 221 extends into the guiding structure 12 along the second direction Y and each arc-shaped surface 2211 is spliced ​​in sequence and enclosed to form a circular hole.

[0083] The circular hole formed by splicing the arcuate surfaces 2211 of the guiding structure 12 has the same radial dimension as the first shaft segment 121, so that in the locked state, each locking block 221 can be stuck between the first mounting portion 11 and the second shaft segment 122 and surround the first shaft segment 121, avoiding relative shaking between the first locking assembly 10 and the second locking assembly 20 and ensuring the stability of the docking lock.

[0084] In some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, the locking structure 22 also includes a positioning portion 223, and the second mounting portion 21 is provided with a first slot 213 and a second slot 214 connected to the slide groove 212. Along the second direction Y, the first slot 213 is located between the second slot 214 and the mounting groove 211, and a through hole 2212 extending along the first direction X is provided on the locking block 221. The positioning portion 223 is inserted into the through hole 2212 and has freedom of movement relative to the locking block 221; in the locked state, the positioning portion 223 protrudes from the locking block 221 along the first direction X and extends into the first slot 213; in the unlocked state, the positioning portion 223 protrudes from the locking block 221 along the first direction X and extends into the second slot 214.

[0085] The assembly locking device 100 provided in one embodiment of the present application, through the above-mentioned setting, enables in the locked state, the positioning portion 223 protrudes from the locking block 221 along the first direction X and extends into the first slot 213, restricting the movement of the locking block 221, and ensuring the locking requirement of the guide structure 12. When in the unlocked state, the positioning portion 223 protrudes from the locking block 221 along the first direction X and inserts into the second slot 214, and the positioning portion 223 is separated from the guide structure 12, so that the guide structure 12 can be smoothly pulled out from the second mounting portion 21 and separated from the locking structure 22, so that when the tower 1 needs to maintain two adjacent tower sections 101 and needs to be disassembled and separated, the first locking assembly 10 and the second locking assembly 20 can be unlocked smoothly, and the locking block 221 is prevented from being drawn into the card slot 123 during the unlocking process to affect the disassembly and assembly between the first locking assembly 10 and the second locking assembly 20.

[0086] Optionally, the first slot 213 and the second slot 214 may extend axially and communicate with the corresponding slide groove 212 .

[0087] Optionally, each slide groove 212 is correspondingly provided with a first slot 213 and a second slot 214 , and along the first direction X, the orthographic projection of each slide groove 212 covers the first slot 213 and the second slot 214 correspondingly provided thereto.

[0088] The positioning portion 223 includes but is not limited to being in a rod shape, a block shape, etc.

[0089] The positioning portion 223 may be disposed protruding from the second mounting portion 21 in the first direction X.

[0090] Continue reading Figures 6 to 10 As shown, in some optional embodiments, the locking structure 22 of the assembly locking device 100 provided in one embodiment of the present application also includes a second elastic member 224, which is arranged in the through hole 2212 and connected between the locking block 221 and the positioning portion 223 to drive the positioning portion 223 to move along the first direction X.

[0091] The second elastic member 224 includes at least one of a spring, an elastic washer, a compressible elastic airbag, etc. The second elastic member 224 is elastically deformable in the first direction X.

[0092] An assembly locking device 100 provided in an embodiment of the present application is provided with a second elastic member 224. When the positioning portion 223 is required to protrude the locking block 221 along the first direction X and extend into the first slot 213 or the second slot 214, the positioning portion 223 can be pushed out of the locking block 221 and extend into the first slot 213 or the second slot 214 under the action of the second elastic member 224 to ensure locking or unlocking requirements.

[0093] Continue reading Figures 6 to 10 As shown, in some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, the through hole 2212 includes a first hole segment 2212a, a second hole segment 2212b and a third hole segment 2212c distributed along the first direction X, the radial dimension of the second hole segment 2212b is greater than the radial dimension of the first hole segment 2212a and the third hole segment 2212c, the second elastic member 224 is located in the second hole segment 2212b and is sleeved on the positioning portion 223, one end of the second elastic member 224 in the first direction X abuts against the second mounting portion 21, and the other end of the second elastic member 224 in the first direction X abuts against the adapter ring 225 connected to the positioning portion 223.

[0094] The adapter ring 225 can be sleeved on the positioning portion 223 and connected to the positioning portion 223, and can be optionally connected by welding.

[0095] An assembly locking device 100 provided by an embodiment of the present application, the through hole 2212 adopts the above-mentioned structural form, so that the second hole section 2212b can be used to place the second elastic member 224, and the step surface between the second hole section 2212b and the first hole section 2212a can be used to press and limit the second elastic member 224 at one end in the first direction X, and the step surface between the second hole section 2212b and the third hole section 2212c can be used to press and limit the adapter ring 225, which is beneficial to the installation of the second elastic member 224 and the realization of the elastic driving function of the positioning portion 223.

[0096] like Figures 7 to 10As shown, in some optional embodiments, an assembly locking device 100 provided by an embodiment of the present application, the positioning portion 223 is provided with a movable column 2231, and a movable groove 215 extending along the second direction Y is provided on the second mounting portion 21, the movable column 2231 matches the shape of the movable groove 215, and the positioning portion 223 and the locking block 221 have a first matching state and a second matching state; in the first matching state, the movable column 2231 is located in the movable groove 215 and can move along the second direction Y with the locking block 221; in the second matching state, the movable column 2231 is separated from the movable groove 215 and extends into the slide groove 212 along the first direction X, and the positioning portion 223 is inserted into one of the first slot 213 or the second slot 214.

[0097] Optionally, a movable column 2231 is correspondingly provided on the positioning portion 223 provided on each locking block 221 , and the movable groove 215 may be located in the second mounting portion 21 , and the extending direction of the movable groove 215 may be consistent with that of the sliding groove 212 .

[0098] In the first mating state, the movable column 2231 is located in the movable groove 215, so that the second elastic member 224 is compressed, and the axial end of the positioning portion 223 is located in the locking block 221, that is, one end of the second mounting portion 21 inserted in the first direction X does not protrude from the locking block 221, so that the locking block 221 can move along the second direction Y.

[0099] In the second matching state, the positioning part 223 can be rotated to separate the movable column 2231 from the movable groove 215, and the second elastic member 224 can be released from the compression state. Under the action of the second elastic member 224, the positioning part 223 is pushed to axially protrude the locking block 221 and be inserted into one of the first slot 213 and the second slot 214 to ensure the stability of the locked state or the unlocked state.

[0100] In some optional embodiments, in an assembly locking device 100 provided by an embodiment of the present application, the movable columns 2231 of the positioning portion 223 can be arranged in pairs, and correspondingly, the movable grooves 215 can also be arranged in pairs, and each movable column 2231 can be slidably matched with one of the movable grooves 215 to ensure the stability of the positioning portion 223 and the locking block 221 in the first matching state and the second matching state.

[0101] In some optional embodiments, in an assembly locking device 100 provided by an embodiment of the present application, each locking structure 22 includes a plurality of positioning portions 223 , and the plurality of positioning portions 223 are arranged at intervals around the same guide structure 12 .

[0102] Optionally, the number of the positioning portions 223 may be equal to the number of the locking blocks 221 and they may be arranged one to one.

[0103] An assembly locking device 100 provided in an embodiment of the present application can achieve stability of the relative position of each locking block 221 and the guide structure 12 in the locked state and the unlocked state by making the number of positioning parts 223 included in the locking structure 22 be multiple, thereby ensuring the locking and unlocking effects.

[0104] In some optional embodiments, an assembly locking device 100 provided in an embodiment of the present application, the positioning portion 223 is rod-shaped and protrudes from the second mounting portion 21 along the first direction X, and a strip groove 111 is provided on the first mounting portion 11. In the locked state, the positioning portion 223 extends into the strip groove 111. Optionally, the strip groove can extend along the second direction Y.

[0105] The assembly locking device 100 provided in one embodiment of the present application, through the above-mentioned configuration, facilitates the switching of the positioning portion 223 and the locking block 221 between the first matching state and the second matching state. At the same time, the configuration of the strip groove 111 can not only achieve a double positioning and locking effect, but also avoid the positioning portion 223 to avoid interference during docking.

[0106] The assembly locking device 100 provided in one embodiment of the present application has the following working principle when in use:

[0107] Before the tower section 101 is docked, the positioning portion 223 and the locking block 221 are in a first matching state, that is, the movable column 2231 is located in the movable groove 215 and can move along the second direction Y with the locking block 221. At this time, the second elastic member 224 is in a compressed state, and the positioning portion 223 in the lower part of the first direction X will not exceed the lower surface of the locking block 221, and is completely inside the locking block 221. The first elastic member 222 is in a free state. At this time, the arc structures at the head ends of multiple locking blocks 221 of each locking structure 22 are docked to form a full circle. When the tower sections 101 are butted, the guiding structure 12 on one tower section 101 is inserted into the full circle formed by the arc structure of the head end of the multiple locking blocks 221 of the locking structure 22 on the other tower section 101. Since the diameter of the full circle is smaller than the conical structure at the lower end of the guiding structure 12, the multiple locking blocks 221 will move backwards during the insertion process, and the first elastic member 222 will be gradually compressed. Then, the positioning portion 223 will gradually penetrate the strip hole 111 on the first mounting portion 11. When the guiding structure 12 The conical structure at the lower end is completely inserted into the locking structure 22. At this time, since the conical structure switches to a cylindrical structure, the multiple locking blocks 221 will be rebounded by the first elastic member 222, firmly clamping the first shaft section 121 at the upper end of the guiding structure 12, and rotating the positioning portion 223 so that the positioning portion 223 and the locking block 221 are switched to the second matching state. The moving column 2231 is separated from the moving groove 215 and extends into the sliding groove 212 along the first direction X, and the positioning portion 223 is inserted into the first slot 213.

[0108] At this time, multiple locking blocks 221 firmly fix the upper tower section 101 to be installed on the lower tower section 101, and the floating crane can unload the force, and the upper tower section 101 and the lower tower section 101 will move with the wind turbine foundation 4, without relative movement, and then the personnel will wear the tower connection bolts and other fasteners and apply the bolt torque. In the dynamic installation process, this method can realize the rapid docking and tightening of the towers, and the floating crane can unload the force in time without waiting for the tower bolts to be tightened. Because the crane cannot unload the force in advance, the upper tower section and the lower tower section will not move relative to each other due to the shaking of the floating foundation, thereby causing safety risks to personnel and the crane.

[0109] When a large part of the tower 1 needs to be dismantled for replacement, first remove the bolts and other fasteners connecting the tower sections 101, pull the positioning portion 223 along the first direction X, and switch the positioning portion 223 and the locking block 221 to the first matching state again. At this time, the lower part of the positioning portion 223 does not exceed the lower surface of the locking block 221, and is completely inside the locking block 221. The second elastic member 224 is in a compressed state, and the positioning portion 223 and the locking block 221 are quickly retracted backwards, so that the positioning portion 223 corresponds to the second slot 214 up and down, so that the positioning portion 223 and the locking block 221 are switched to the second matching state again. At this time The second elastic member 224 rebounds to penetrate the bottom of the positioning portion 223 through the locking block 221 and snap it into the second slot 214. At this time, multiple locking blocks 221 are firmly fixed in the retracted position. During the above-mentioned retreat process, the crane also synchronously separates the upper tower section 101 from the lower tower section 101. This method can achieve rapid dismantling between towers. The floating crane does not need to lift the tower section 101 in advance. After all the tower bolts are removed, the lifted tower section 101 is quickly separated. The crane will not be loaded in advance when dismantling the tower section 101. However, the shaking of the floating foundation will cause safety risks to personnel and the crane when removing the bolts.

[0110] In some optional embodiments, an assembly locking device 100 provided in one embodiment of the present application, when used for the tower 1 provided in the above embodiments, the surface of the first mounting portion 11 axially facing the second mounting portion 21 is flush with the top surface of the end flange 101b of the tower section 101 in which it is located, and the surface of the second mounting portion 21 axially facing the first mounting portion 11 is flush with the top surface of the end flange 101b of the tower section 101 in which it is located, which can ensure that during the splicing process of two adjacent tower sections 101, not only can the requirements of quick docking and relative position locking be guaranteed, but also the end flanges 101b of the two adjacent tower sections 101 can be overlapped without gaps, thereby ensuring the safety of the docking of the tower 1.

[0111] The assembly locking device 100, tower 1 and wind turbine generator set provided in one embodiment of the present application have the following advantages:

[0112] 1. By adopting the novel tower 1 structure with the assembly locking device 100, in the face of future deep sea areas, even if there is no jack-up platform available on the market, a floating crane can be used at the offshore machine site to hoist the large-capacity unit onto the floating foundation, thereby ensuring the feasibility of the future deep sea large-capacity floating unit offshore construction technology.

[0113] 2. The use of the new tower 1 structure with the assembly locking device 100 can achieve rapid docking and tightening between the tower sections 101, thereby improving the efficiency of on-site unit installation. Since the floating crane can unload force in time, the tower section 101 and the wind turbine foundation 4 can shake together in a relatively static state, and then personnel can install the tower section 101 connection bolts and tighten them, reducing potential risks to personnel and cranes.

[0114] 3. By adopting the novel tower 1 structure with the assembly locking device 100, a floating crane can be used to install a floating wind turbine at sea, without the need for a self-elevating platform, without the need to select a large-sized and large-tonnage dock crane at the dock, and without occupying dock resources to transform the dock's bearing capacity, which can greatly reduce the construction cost of large-capacity floating units. At the same time, when installing floating units at sea, there is no need to tow the floating foundation and the wind turbine as a whole, which greatly reduces the towing cost and the uncertain risks (such as typhoon interference) during the towing process.

[0115] 4. The use of the new tower 1 structure with the assembly locking device 100 can also take into account the replacement of large components of the floating unit in the later stage, ensuring the feasibility of future deep-sea large-capacity floating units at sea. There is no need to adopt the existing method of towing the entire floating body and wind turbine to the dock for replacement of large components, which greatly reduces the maintenance cost of the floating unit.

[0116] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An assembly locking device for a tower, wherein the tower comprises two or more stacked tower sections, characterized in that: The assembly locking device comprises: A first locking assembly, comprising a first mounting portion and a guide structure disposed on the first mounting portion, wherein the first mounting portion can be connected to one of the two adjacent tower sections; a second locking assembly, arranged opposite to the first locking assembly in a first direction, the second locking assembly comprising a second mounting portion and a locking structure arranged on the second mounting portion, the second mounting portion being capable of being connected to the other of the two adjacent tower sections; Wherein, the assembled locking device can be switched between a locked state and an unlocked state; In the locked state, the guide structure partially extends into the second mounting portion and is engaged with the locking structure, and the relative positions of the first locking component and the second locking component are fixed; In the unlocked state, the locking structure releases the guiding structure, and the first locking component and the second locking component can be separately disposed.

2. The assembly locking device according to claim 1, characterized in that: The first mounting portion and the second mounting portion are respectively annular structures, the number of the guide structures and the number of the locking structures are both more than two and are arranged one to one, and along the circumference of the first mounting portion, a plurality of the guide structures are distributed at intervals on the first mounting portion, and a plurality of the locking structures are distributed at intervals on the second mounting portion.

3. The assembly locking device according to claim 1, characterized in that: The guiding structure protrudes from the first mounting portion along the first direction toward the side where the second locking assembly is located, the guiding structure is provided with a card slot, and the second mounting portion is provided with a mounting slot; In the locked state, the guide structure extends into the installation slot, and the locking structure partially extends into the card slot; In the unlocked state, the locking structure is separated from the locking slot, and the guiding structure has freedom of movement in the first direction.

4. The assembly locking device according to claim 3, characterized in that: The guiding structure includes a first shaft segment and a second shaft segment distributed along the first direction, the first shaft segment is connected between the second shaft segment and the first mounting portion, the radial dimension of the second shaft segment in the first direction toward the first shaft segment is larger than the radial dimension of the first shaft segment, and the first shaft segment, the second shaft segment and the first mounting portion enclose the slot.

5. The assembly locking device according to claim 3, characterized in that: The second mounting portion is provided with a plurality of slide grooves respectively connected with the mounting grooves, the locking structure includes a plurality of locking blocks and a first elastic member, each of the locking blocks is provided in one of the slide grooves and is movably connected with the second mounting portion, the first elastic member is connected between the locking block and the second mounting portion, the length of the first elastic member in the second direction is adjustable, and the second direction intersects with the first direction.

6. The assembly locking device according to claim 5, characterized in that: The surface of the locking block facing away from the first elastic member in the second direction is an arc-shaped surface. In the locked state, each locking block extends into the slot of the guiding structure along the second direction and each arc-shaped surface is spliced ​​and enclosed in sequence to form a circular hole.

7. The assembly locking device according to claim 6, characterized in that: The locking structure further includes a positioning portion, the second mounting portion is provided with a first slot and a second slot communicating with the slide slot, along the second direction, the first slot is located between the second slot and the mounting slot, the locking block is provided with a through hole extending along the first direction, the positioning portion is plugged into the through hole and has a degree of freedom of movement relative to the locking block; In the locked state, the positioning portion protrudes from the locking block along the first direction and extends into the first slot; In the unlocked state, the positioning portion protrudes from the locking block along the first direction and extends into the second slot.

8. The assembly locking device according to claim 7, characterized in that: The locking structure further includes a second elastic member, which is disposed in the through hole and connected between the locking block and the positioning portion to drive the positioning portion to move along the first direction.

9. The assembly locking device according to claim 8, characterized in that: The through hole includes a first hole segment, a second hole segment and a third hole segment distributed along the first direction, the radial size of the second hole segment is larger than the radial size of the first hole segment and the third hole segment, the second elastic member is located in the second hole segment and is sleeved on the positioning portion, one end of the second elastic member in the first direction abuts against the second mounting portion, and the other end of the second elastic member in the first direction abuts against an adapter ring connected to the positioning portion.

10. The assembly locking device according to claim 7, characterized in that: The positioning portion is provided with a moving column, the second mounting portion is provided with a moving groove extending along the second direction, the moving column matches the shape of the moving groove, and the positioning portion and the locking block have a first matching state and a second matching state; In the first matching state, the moving column is located in the moving groove and can move along the second direction with the locking block; In the second matching state, the moving post is separated from the moving slot and extends into the sliding slot along the first direction, and the positioning portion is inserted into one of the first slot or the second slot.

11. The assembly locking device according to claim 7, characterized in that: The locking structure includes a plurality of positioning portions, and the plurality of positioning portions are arranged at intervals around the same guiding structure.

12. The assembly locking device according to claim 7, characterized in that: The positioning portion is rod-shaped and protrudes from the second mounting portion in a first direction. A strip groove is provided on the first mounting portion. In the locked state, the positioning portion extends into the strip groove.

13. A tower, characterized in that: include: A tower section, wherein two or more tower sections are stacked, each tower section comprises a tower body and end flanges arranged on both sides of the tower body on its own axial direction, and the end flanges of two adjacent tower sections are connected by fasteners; According to the assembly locking device as described in any one of claims 1 to 12, the first mounting portion is connected to one of the two adjacent tower sections, and the second mounting portion is connected to the other of the two adjacent tower sections.

14. The tower according to claim 13, characterized in that The surface of the first mounting portion facing the second mounting portion in the axial direction is flush with the top surface of the end flange of the tower section, and the surface of the second mounting portion facing the first mounting portion in the axial direction is flush with the top surface of the end flange of the tower section.

15. A wind turbine generator set, characterized in that: Comprising a tower as claimed in claim 13 or 14.

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