Offshore wind power fan-shaped stator petal side coil pressing device and pressing method thereof

Abstract

The invention belongs to the technical field of wind power generation, and particularly relates to an offshore wind power fan-shaped stator petal side coil pressing device and a pressing method thereof. The coil pressing device is mainly composed of the feeding assembly and the pressing assembly, the feeding assembly is used for achieving automatic feeding of the fan-shaped stator petals preassembled with the coils, and the fan-shaped stator petals and the coils can be sequentially transferred to the pressing station; a radial displacement mechanism of the pressing assembly can adjust the radial positions of a downward pressing mechanism and a side pressing mechanism, a lifting type rotating mechanism can drive the downward pressing mechanism and the side pressing mechanism to move downwards, and when the coil needs to be pressed and repaired, a standard arc groove of the downward pressing mechanism is connected to the outer side of the upper portion of the coil in a clamped mode and heats the coil; the arc-shaped groove of the side pressing mechanism is clamped outside the outermost layer of coil, the lifting type rotating mechanism is used for driving the downward pressing mechanism and the side pressing mechanism to slowly rotate in a reciprocating mode, and automatic pressing and repairing operation of the large stator petal side coil is achieved in this way.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation, and in particular relates to a side coil pressing device for a fan-shaped stator lobe of an offshore wind power plant and a pressing method thereof. Background Art

[0002] A stator flap type wind turbine is a large direct-drive wind turbine assembled by assembling stator flaps. The direct-drive stator flap generator has the advantages of easy transportation, small failure losses, and convenient maintenance. However, its manufacturing process is more complicated than that of an ordinary direct-drive wind turbine, and it is more likely to have problems during the manufacturing process. Therefore, the requirements for the manufacturing process of the stator flap are also more stringent. During the manufacturing process, the coil of the stator flap is prone to deformation due to its long length and poor rigidity. The deformation of the coil causes a gap to exist between the coil and the iron core, resulting in residual paint in these gaps after varnishing, which is difficult to remove, so the side coils need to be pressed tightly.

[0003] The patent specification with publication number CN115459541B discloses a large stator lobe side coil clamping device and a clamping method thereof. The device includes a pressure plate body and a pad. The pad includes a pressure plate pad and a composite pad. The pressure plate body is detachably connected to the stator lobe via the pressure plate pad. The composite pad includes a side composite pad. At least one side composite pad is movably provided between the pressure plate body and the coil. The coil is compressed by applying pressure to the side composite pad. The stator lobe side coil clamping device is used in conjunction with a binding rope. A method of first pressing and then tightening is adopted to eliminate the gap between the coil and the iron core, prevent the coil from deforming, and effectively reduce the failure rate of the stator lobe varnish insulation.

[0004] The aforementioned large stator lobe side coil clamping device has drawbacks. It requires rope holes on the stator lobe to facilitate rope tying, requires numerous fasteners, and requires manual adjustment, making the overall operation cumbersome and inefficient. It also prevents automated compression and repair of large stator lobe side coils. Therefore, there is a need to optimize and improve this large stator lobe side coil clamping device. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art and to provide a side coil pressing device and a pressing method for an offshore wind turbine fan-shaped stator vane.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a side coil pressing device for fan-shaped stator blades of offshore wind power generation, comprising a feeding assembly and a pressing assembly;

[0008] The feeding assembly includes an annular turntable, an inner limit stop ring, an outer limit stop ring, a vacuum suction cup and a rotary drive. The inner edge of the annular turntable is installed with an inner limit stop ring, the outer edge of the annular turntable is installed with an outer limit stop ring, a plurality of vacuum suction cups are installed circumferentially inside the annular turntable, and the vacuum suction cups are provided with negative pressure adsorption holes extending to the upper end surface of the annular turntable; the width of the annular turntable matches the width of the fan-shaped stator petal, and a plurality of rows of coils are installed on the side of the fan-shaped stator petal; a rotary drive for driving the rotation of the annular turntable is installed on the lower side of the annular turntable;

[0009] The clamping assembly consists of a lifting and rotating mechanism, a radial displacement mechanism, a downward pressing mechanism and a side pressure mechanism. The lifting and rotating mechanism can drive the radial displacement mechanism to lift and lower and rotate horizontally. The radial displacement mechanism can drive the downward pressing mechanism and the side pressure mechanism to perform radial displacement. The downward pressing mechanism can perform hot pressing on the upper side of the coil and realize material sorting by rotation. The side pressure mechanism can squeeze both sides of the coil to eliminate the gap between the coils.

[0010] Furthermore, in the above-mentioned offshore wind turbine fan-shaped stator lobe side coil pressing device, the fan-shaped stator lobe is provided with a winding groove for facilitating the installation of the coil, and the coil is installed in the winding groove in a spiral winding manner.

[0011] Furthermore, in the above-mentioned offshore wind turbine fan-shaped stator lobe side coil pressing device, the winding groove is a groove-like structure, which is composed of an arc-shaped web groove and side plate grooves located at both ends thereof, and the single-turn diameter value of the coil is smaller than the depth value of the winding groove.

[0012] Furthermore, in the above-mentioned offshore wind turbine fan-shaped stator lobe side coil pressing device, the lifting and rotating mechanism is composed of a groove plate, a lifting push rod, a servo motor, a rotary joint, a hexagonal column, a mounting seat and a belt transmission member, the lower plate of the groove plate is installed with a lifting push rod, the movable end of the lifting push rod is connected to one end of the hexagonal column via a rotary joint, the other end of the hexagonal column is fixed with a mounting seat, the servo motor is fixed to the outer side of the web of the groove plate, and the output shaft of the servo motor is connected to the hexagonal column through a belt transmission member; the belt transmission member is composed of a driving pulley, a driven pulley and a transmission belt, the driving pulley is fixed to the outer end of the output shaft of the servo motor, the transmission belt is sleeved between the driving pulley and the driven pulley, the driven pulley is sleeved on the outer side of the hexagonal column, a hexagonal shaft hole is opened in the driven pulley, and the driven pulley is movably supported by the upper plate of the groove plate.

[0013] Furthermore, in the above-mentioned offshore wind turbine fan-shaped stator lobe side coil pressing device, the radial displacement mechanism is composed of a slide rail and a slider that can form a linear guide pair therewith, and the slide rail is fixed on the outside of the mounting seat.

[0014] Furthermore, in the above-mentioned offshore wind turbine fan-shaped stator lobe side coil pressing device, the pressing mechanism includes a hot pressing block, which is fixed on the lower side of the slider, and an electric heating plate is embedded in the hot pressing block, and the lower side of the hot pressing block is provided with several rows of gapless standard arc grooves.

[0015] Furthermore, in the above-mentioned offshore wind turbine fan-shaped stator lobe side coil pressing device, the side pressure mechanism includes a side pressure bracket, a side pressure push rod and a push block. The side pressure bracket is fixed to the side end of the slider, and the side pressure bracket is respectively installed with side pressure push rods near both ends. The movable end of the side pressure push rod is installed with a push block, and the push block is provided with an arc-shaped groove that cooperates with the coil.

[0016] The present invention also provides a method for pressing side coils of fan-shaped stator lobes of offshore wind turbines, which is implemented based on the above-mentioned device for pressing side coils of fan-shaped stator lobes of offshore wind turbines, and includes the following steps:

[0017] 1) Use the loading robot to place the fan-shaped stator flap pre-installed with coils on the annular turntable of the loading assembly, use the vacuum suction cup to absorb and lock the fan-shaped stator flap, and use the rotary drive to drive the annular turntable to rotate, so that the fan-shaped stator flap and coil are transferred to the pressing station;

[0018] 2) The radial displacement mechanism of the clamping assembly is used to adjust the radial position of the downward pressing mechanism and the side pressing mechanism, and the lifting and rotating mechanism is used to drive the downward pressing mechanism and the side pressing mechanism to move downward. The standard arc groove of the downward pressing mechanism is clamped on the upper outer side of the coil and heated. The arc groove of the side pressing mechanism is clamped on the outside of the outermost coil. The lifting and rotating mechanism is used to drive the downward pressing mechanism and the side pressing mechanism to rotate slowly back and forth, so as to achieve seamless clamping processing of each part of the coil one by one.

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a side coil pressing device for an offshore wind turbine fan-shaped stator flap, which is mainly composed of a loading assembly and a pressing assembly. The loading assembly is used to realize automatic loading of fan-shaped stator flaps pre-installed with coils, so that the fan-shaped stator flaps and coils can be transferred to the pressing station in sequence; the radial displacement mechanism of the pressing assembly can adjust the radial position of the down-pressing mechanism and the side-pressing mechanism, and the lifting and rotating mechanism can drive the down-pressing mechanism and the side-pressing mechanism to move downward. When the coil needs to be pressed and repaired, the standard arc groove of the down-pressing mechanism is clamped on the upper outer side of the coil and heated, and the arc groove of the side-pressing mechanism is clamped on the outside of the outermost coil. The lifting and rotating mechanism is used to drive the down-pressing mechanism and the side-pressing mechanism to rotate slowly back and forth, so that the automatic pressing and repair operations of the side coils of large stator flaps are realized.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the structure of the fan-shaped stator lobe side coil pressing device of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the fan-shaped stator lobes and coils in the present invention;

[0025] Figure 3 Schematic diagram of the top view of the feeding assembly in the present invention;

[0026] Figure 4 Schematic diagram of the bottom view of the loading assembly in the present invention;

[0027] Figure 5 This is a schematic diagram of the main structure of the compression assembly in the present invention;

[0028] Figure 6 It is a structural schematic diagram of the pressing mechanism in the present invention;

[0029] Figure 7 Schematic diagram of the structure of the side pressure mechanism of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the push block in the present invention;

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1- loading assembly, 101- annular turntable, 102- inner limit ring, 103- outer limit ring, 104- vacuum suction cup, 105- rotary drive;

[0033] 2- Clamping assembly, 201- Groove plate, 202- Lifting push rod, 203-Servo motor, 204- Rotary joint, 205- Hexagonal column, 206- Mounting seat, 207- Belt transmission part, 208- Slide rail, 209- Slider, 210- Hot pressing block, 211- Electric heating plate, 212- Standard arc groove, 213- Side pressure bracket, 214- Side pressure push rod, 215- Push block, 216- Arc groove. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] like Figures 1-8 As shown, this embodiment provides a side coil pressing device for an offshore wind turbine fan-shaped stator vane, including a feeding assembly 1 and a pressing assembly 2.

[0036] In this embodiment, the loading assembly 1 includes an annular turntable 101, an inner limit ring 102, an outer limit ring 103, a vacuum suction cup 104, and a rotary driver 105. The inner limit ring 102 is installed at the inner edge of the annular turntable 101, and the outer limit ring 103 is installed at the outer edge of the annular turntable 101. Multiple vacuum suction cups 104 are installed circumferentially inside the annular turntable 101. The vacuum suction cups 104 are provided with negative pressure adsorption holes extending to the upper end surface of the annular turntable 101; the width of the annular turntable 101 matches the width of the fan-shaped stator petals 3, and several rows of coils 4 are installed on the sides of the fan-shaped stator petals 3; and the lower side of the annular turntable 101 is installed with a rotary driver 105 for driving its rotation.

[0037] In this embodiment, the clamping assembly 2 consists of a lifting and rotating mechanism, a radial displacement mechanism, a downward pressing mechanism and a side pressure mechanism. The lifting and rotating mechanism can drive the radial displacement mechanism to lift and lower and rotate horizontally. The radial displacement mechanism can drive the downward pressing mechanism and the side pressure mechanism to perform radial displacement. The downward pressing mechanism can hot-press the upper side of the coil 4 and realize material sorting through rotation. The side pressure mechanism can squeeze both sides of the coil 4 to eliminate the gap between the coils 4.

[0038] In this embodiment, the fan-shaped stator flap 3 is provided with a winding groove for facilitating installation of the coil 4 , and the coil 4 is installed in the winding groove in a spiral winding manner.

[0039] In this embodiment, the winding groove is a groove-like structure, which is composed of an arc-shaped web groove and side plate grooves located at both ends. The single-turn diameter value of the coil 4 is smaller than the depth value of the winding groove, so that the lower part of the coil 4 can be hidden in the arc-shaped arc plate groove of the winding groove, which will not affect the placement of the fan-shaped stator lobe 3 on the annular turntable 101.

[0040] In this embodiment, the lifting and rotating mechanism consists of a grooved plate 201, a lifting rod 202, a servo motor 203, a rotary joint 204, a hexagonal prism 205, a mounting base 206, and a belt drive 207. The lifting rod 202 is mounted on the lower plate of the grooved plate 201. The movable end of the lifting rod 202 is connected to one end of the hexagonal prism 205 via the rotary joint 204. The mounting base 206 is fixed to the other end of the hexagonal prism 205. The servo motor 203 is fixed to the outer side of the web of the grooved plate 201. The output shaft of the servo motor 203 is connected to the hexagonal prism 205 via the belt drive 207. The belt transmission component 207 is composed of a driving pulley, a driven pulley and a transmission belt. The driving pulley is fixed to the outer end of the output shaft of the servo motor 203. The transmission belt is sleeved between the driving pulley and the driven pulley. The driven pulley is sleeved on the outer side of the hexagonal column 205. A hexagonal shaft hole is opened in the driven pulley. The driven pulley is movably supported by the upper plate of the grooved plate 201.

[0041] In this embodiment, the radial displacement mechanism is composed of a slide rail 208 and a slider 209 that can form a linear guide pair with the slide rail 208 , and the slide rail 208 is fixed on the outer side of the mounting seat 206 .

[0042] In this embodiment, the pressing mechanism includes a hot pressing block 210, which is fixed to the lower side of the slider 209. An electric heating plate 211 is embedded in the hot pressing block 210, and several rows of gapless standard arc grooves 212 are provided on the lower side of the hot pressing block 210.

[0043] In this embodiment, the side pressure mechanism includes a side pressure bracket 213, a side pressure push rod 214 and a push block 215. The side pressure bracket 213 is fixed to the side end of the slider 209. The side pressure bracket 213 is respectively installed with side pressure push rods 214 near both ends. The movable end of the side pressure push rod 214 is installed with a push block 215. The push block 215 is provided with an arc-shaped groove 216 that cooperates with the coil 4.

[0044] This embodiment also provides a method for compacting side coils of fan-shaped stator lobes of offshore wind turbines, comprising the following steps:

[0045] 1) Using a loading robot, the fan-shaped stator flap 3 pre-installed with the coil 4 is placed on the annular turntable 101 of the loading assembly 1. The fan-shaped stator flap 3 is sucked and locked by the vacuum suction cup 104. The annular turntable 101 is rotated by the rotary drive 105, so that the fan-shaped stator flap 3 and the coil 4 are transferred to the pressing station.

[0046] 2) The radial displacement mechanism of the clamping assembly 2 is used to adjust the radial position of the downward pressing mechanism and the side pressure mechanism, and the lifting and rotating mechanism is used to drive the downward pressing mechanism and the side pressure mechanism to move downward. The standard arc groove 212 of the downward pressing mechanism is clamped on the upper outer side of the coil 4 and heated. The arc groove 216 of the side pressure mechanism is clamped on the outside of the outermost coil 4. The lifting and rotating mechanism is used to drive the downward pressing mechanism and the side pressure mechanism to rotate slowly back and forth, so as to achieve seamless clamping processing of each part of the coil one by one.

[0047] The specific application of this embodiment is as follows: the offshore wind power fan-shaped stator flap side coil pressing device is mainly composed of a loading component 1 and a pressing component 2. The loading component 1 is used to realize the automatic loading of the fan-shaped stator flap 3 pre-installed with the coil 4, which can enable the fan-shaped stator flap and the coil to be transferred to the pressing station in sequence; the radial displacement mechanism of the pressing component 2 can adjust the radial position of the down-pressing mechanism and the side-pressing mechanism, and the lifting and rotating mechanism can drive the down-pressing mechanism and the side-pressing mechanism to move downward. When the coil needs to be pressed and repaired, the standard arc groove of the down-pressing mechanism is clamped on the upper outer side of the coil and heated, and the arc groove of the side-pressing mechanism is clamped on the outside of the outermost coil. The lifting and rotating mechanism is used to drive the down-pressing mechanism and the side-pressing mechanism to rotate slowly back and forth. In this way, the automatic pressing and repair operations of the large stator flap side coils are realized.

[0048] The preferred embodiments of the present invention disclosed above are merely intended to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Offshore wind turbine fan-shaped stator lobe side coil pressing device, characterized in that: It includes a feeding component and a pressing component; The feeding assembly includes an annular turntable, an inner limit stop ring, an outer limit stop ring, a vacuum suction cup and a rotary drive. The inner edge of the annular turntable is installed with an inner limit stop ring, the outer edge of the annular turntable is installed with an outer limit stop ring, a plurality of vacuum suction cups are installed circumferentially inside the annular turntable, and the vacuum suction cups are provided with negative pressure adsorption holes extending to the upper end surface of the annular turntable; the width of the annular turntable matches the width of the fan-shaped stator petal, and a plurality of rows of coils are installed on the side of the fan-shaped stator petal; a rotary drive for driving the rotation of the annular turntable is installed on the lower side of the annular turntable; The clamping assembly consists of a lifting and rotating mechanism, a radial displacement mechanism, a downward pressing mechanism and a side pressure mechanism. The lifting and rotating mechanism can drive the radial displacement mechanism to lift and lower and rotate horizontally. The radial displacement mechanism can drive the downward pressing mechanism and the side pressure mechanism to perform radial displacement. The downward pressing mechanism can perform hot pressing on the upper side of the coil and realize material sorting by rotation. The side pressure mechanism can squeeze both sides of the coil to eliminate the gap between the coils.

2. The offshore wind turbine fan-shaped stator lobe side coil pressing device according to claim 1 is characterized in that: The fan-shaped stator lobes are provided with winding slots for facilitating installation of coils, and the coils are installed in the winding slots in a spiral winding manner.

3. The offshore wind turbine fan-shaped stator lobe side coil pressing device according to claim 2 is characterized in that: The winding groove is a groove-like structure, which is composed of an arc-shaped web groove and side plate grooves located at both ends thereof. The single-turn diameter of the coil is smaller than the depth of the winding groove.

4. The offshore wind turbine fan-shaped stator lobe side coil pressing device according to claim 3 is characterized in that: The lifting and rotating mechanism is composed of a groove plate, a lifting push rod, a servo motor, a rotary joint, a hexagonal column, a mounting seat and a belt transmission member, wherein the lower plate of the groove plate is equipped with a lifting push rod, the movable end of the lifting push rod is connected to one end of the hexagonal column via a rotary joint, the other end of the hexagonal column is fixed to the mounting seat, the servo motor is fixed on the outer side of the web of the groove plate, and the output shaft of the servo motor is connected to the hexagonal column through a belt transmission member; the belt transmission member is composed of a driving pulley, a driven pulley and a transmission belt, the driving pulley is fixed to the outer end of the output shaft of the servo motor, the transmission belt is sleeved between the driving pulley and the driven pulley, the driven pulley is sleeved on the outer side of the hexagonal column, a hexagonal shaft hole is opened in the driven pulley, and the driven pulley is movably supported by the upper plate of the groove plate.

5. The offshore wind turbine fan-shaped stator lobe side coil pressing device according to claim 4 is characterized in that: The radial displacement mechanism is composed of a slide rail and a slider that can form a linear guide pair with the slide rail, and the slide rail is fixed on the outside of the mounting seat.

6. The offshore wind turbine fan-shaped stator lobe side coil pressing device according to claim 5 is characterized in that: The pressing mechanism includes a hot pressing block fixed on the lower side of the slider, an electric heating plate embedded in the hot pressing block, and a plurality of rows of standard arc grooves without gaps are provided on the lower side of the hot pressing block.

7. The offshore wind turbine fan-shaped stator lobe side coil pressing device according to claim 6 is characterized in that: The side pressure mechanism includes a side pressure bracket, a side pressure push rod and a push block. The side pressure bracket is fixed to the side end of the slider. The side pressure bracket is respectively installed with side pressure push rods near both ends. The movable end of the side pressure push rod is installed with a push block. The push block is provided with an arc-shaped groove that cooperates with the coil.

8. A method for pressing side coils of fan-shaped stator blades for offshore wind turbines, based on the device for pressing side coils of fan-shaped stator blades for offshore wind turbines according to claim 7, characterized in that: The steps include: 1) Use the loading robot to place the fan-shaped stator flap pre-installed with coils on the annular turntable of the loading assembly, use the vacuum suction cup to absorb and lock the fan-shaped stator flap, and use the rotary drive to drive the annular turntable to rotate, so that the fan-shaped stator flap and coil are transferred to the pressing station; 2) The radial displacement mechanism of the clamping assembly is used to adjust the radial position of the downward pressing mechanism and the side pressing mechanism, and the lifting and rotating mechanism is used to drive the downward pressing mechanism and the side pressing mechanism to move downward. The standard arc groove of the downward pressing mechanism is clamped on the upper outer side of the coil and heated. The arc groove of the side pressing mechanism is clamped on the outside of the outermost coil. The lifting and rotating mechanism is used to drive the downward pressing mechanism and the side pressing mechanism to rotate slowly back and forth, so as to achieve seamless clamping processing of each part of the coil one by one.

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