CN111994787A - Blade hoisting tool - Google Patents

Abstract

The present disclosure provides a blade hoisting tool, the blade hoisting tool includes a pitch rotation mechanism and a blade clamp, the pitch rotation mechanism includes a support frame, a pitch rotation shaft and a rotation shaft drive assembly, the pitch rotation shaft is rotatably arranged on the support frame, and the pitch The first end of the rotating shaft is connected with the blade clamp, the second end of the pitching rotating shaft is connected with the rotating shaft driving assembly, the rotating shaft driving assembly includes a turbine and a worm for driving the turbine to rotate, and the turbine and the pitching rotating shaft are coaxially arranged and fixed to the pitch The second end of the rotating shaft is used to drive the turbine to rotate through the worm, and then drive the blade clamp to rotate, so as to adjust the pitch angle of the blade, so the blade hoisting tool can clamp the blade to rotate together, and there is no need to use additional barring during the blade installation process. mechanism.

Description

Blade lifting tooling

technical field

The present disclosure belongs to the technical field of wind power generation, and in particular relates to a blade hoisting tool.

Background technique

With the continuous increase of the single capacity of the wind turbine, the blade size of the wind turbine is also gradually increasing. For example, the length of the blade of the offshore wind turbine has exceeded 90 meters and the weight has exceeded 35 tons. Due to the weight of the blade, the blade is operated in the air. Attaching to the hub is also increasingly difficult.

The traditional blade installation process requires the use of a cranking structure to rotate the hub, so that the pitch bearing of the hub can correspond to the position of the blade flange. As the blade increases, the traditional cranking structure needs to bear more and more loads. , resulting in deformation of the end cover structure of the generator (connecting position with the crank) during the cranking process, affecting the normal operation of the unit.

Due to the extremely long length of the blade, the three-blade installation has a great risk of turning over due to the limitation of the installation vessel. For example, during the installation of the above-mentioned blade, the blade lifting tool used can rotate the blade at a small angle, for example, rotate 30° Therefore, it is necessary for the crane to carry the blade hoisting and jigging to perform large-angle rotation, but this method has great potential safety hazards. The impact of the hoisting hook may cause the hook to bump the blade, or the blade will slide out from the clamping opening due to the extra pulling force generated by the misoperation of the crane, which will cause the blade lifting tool to exert additional pulling force on the blade.

When the above-mentioned blade lifting tool completes the installation of the first blade and needs to clamp the second blade, it is usually necessary to exchange the positions of the blade clamping block and the blade tip clamping block at the clamping port. Cumbersome and time consuming.

SUMMARY OF THE INVENTION

The main purpose of the present disclosure is to provide a blade hoisting tool, which can clamp the blade to rotate together, and can realize a large-angle rotation in the pitch direction, so there is no need to use an additional turning mechanism during the blade installation process.

For the above-mentioned purpose of the invention, the present disclosure provides the following technical solutions:

According to one aspect of the present disclosure, there is provided a blade lifting tool including a pitch rotation mechanism and a blade clamp, the pitch rotation mechanism including a support frame, a pitch rotation shaft and a rotation shaft drive assembly, the pitch rotation shaft rotatably arranged on the support frame, and the first end of the pitch rotation shaft is connected with the blade clamp, the second end of the pitch rotation shaft is connected with the rotation shaft drive assembly, the rotation shaft The drive assembly includes a turbine and a worm for driving the turbine to rotate, the turbine is coaxially arranged with the pitching rotation shaft and is fixed to the second end of the pitching rotation shaft, so as to drive the turbine to rotate through the worm, and then The blade clamp is driven to rotate, thereby adjusting the pitch angle of the blade.

Preferably, there are two worms, which are symmetrically arranged on both sides of the turbine.

According to another exemplary embodiment of the present disclosure, the blade hanger further includes a hanger, the support frame is provided with a pitch rotating shaft, and the pitch rotating shaft is rotatably mounted to the lower end of the hanger , the rotation axis of the pitch rotation shaft is perpendicular to the rotation axis of the pitch rotation shaft, and is parallel to the length direction of the blade clamp.

Further, the blade hoisting tool further includes a pitch drive mechanism, the first end of the pitch drive mechanism is hinged on the hanger, and the second end of the pitch drive mechanism is hinged on the support frame .

Preferably, the hanger comprises two vertical beams extending downward, the two vertical beams are arranged at intervals, the support frame is arranged between the two vertical beams, and the pitch rotating shaft extends from the Both sides of the support frame extend and are rotatably connected to the two vertical beams.

According to another exemplary embodiment of the present disclosure, the pitch rotating shaft is two rotating shaft segments, which are coaxially arranged on both sides of the supporting frame.

Preferably, the pitch drive mechanism is a telescopic oil cylinder, the pitch drive mechanism is two, the support frame includes a support seat and two support plates, and the two support plates are arranged on the sides of the support seat On the surface and on both sides of the rotating shaft drive assembly, the piston rod of the telescopic oil cylinder is connected to the support plate, and the cylinder body of the telescopic oil cylinder is connected to the hanger.

Further, the pitch drive mechanism includes a cylinder body and a piston rod, the first end of the support plate is provided with a pitch drive pivot shaft, and the free end of the piston rod is pivoted to the pitch drive pivot. On the rotating shaft, the free end of the cylinder is pivotally connected to the blade clamp.

In another exemplary embodiment of the present disclosure, the blade clamp includes a main beam, the second end of the pitch rotation shaft is provided with a spline, and the middle of the main beam is provided with a spline groove matching the spline.

Further, the blade clamp further includes blade clamping units arranged at both ends of the main beam, the pitching rotation mechanism is connected to the main beam and can drive the main beam to rotate around the pitching rotation axis, the The blade clamping unit includes an upper clamping assembly, a lower clamping assembly and a jaw adjusting unit. The jaw adjusting unit includes a first telescopic driving mechanism, and the first telescopic driving mechanism is a first telescopic oil cylinder. Two ends of the adjusting unit are respectively connected between the upper clamping assembly and the lower clamping assembly, and are used for adjusting the size of the clamping opening formed by the upper clamping assembly and the lower clamping assembly.

Further preferably, the upper clamping assembly includes a pressing arm, an upper vertical arm and an angle adjustment unit, the upper vertical arm extends downward from one end of the pressing arm, and the upper part of the upper vertical arm is provided with a pivot. a rotating shaft, the pressing arm is connected to the upper vertical arm through the pivot shaft, the angle adjustment unit includes a second telescopic drive mechanism, the second telescopic drive mechanism is a second telescopic oil cylinder, the second The first end of the telescopic oil cylinder is hinged with the lower part of the upper vertical arm and can be telescopic, and the second end of the second telescopic oil cylinder is hinged with the end of the pressing arm, so as to drive the pressing arm to surround the and/or the lower clamping assembly includes a supporting arm and a lower vertical arm extending upward from one end of the supporting arm, the lower vertical arm is connected with the upper vertical arm, so that the The upper clamping assembly and the lower clamping assembly form a space for clamping the blades.

In another exemplary embodiment of the present disclosure, the blade lifting tool further includes a first locking assembly for locking the upper vertical arm relative to the lower vertical arm, the first locking assembly including: a first locking member , mounted on one of the lower upright arm and the upper upright arm; a second locking piece, mounted on the other of the lower upright arm and the upper upright arm, and connected with the first A locking piece is opposite and has a locking position and an unlocking position. In the locking position, the second locking piece is combined with the first locking piece to lock the relative positions of the upper clamping assembly and the lower clamping assembly , in the unlocking position, the second locking member is disengaged from the first locking member, so that the upper vertical arm can move relative to the lower vertical arm; and a first driving member, and the second locking member A piece is connected for driving the second locking piece to move to at least one of the locking position and the unlocking position.

Further, the first locking member is a long rack, mounted on the lower vertical arm and extending along the direction in which the upper vertical arm moves relative to the lower vertical arm; the second locking member is short A rack is mounted on the upper vertical arm and is opposite to the long rack, and can be driven by the first driving member to move along the movement of the upper vertical arm relative to the lower vertical arm The direction is vertical to move, so that in the locking position, the short rack and the long rack are engaged with each other, wherein the first driving member is a telescopic cylinder, and the short rack is arranged on the telescopic cylinder the first end.

Preferably, the blade lifting tool further includes a second locking assembly for locking the pressing arm relative to the upper upright arm, and the second locking assembly includes a stop portion for restricting the second The first end of the telescopic oil cylinder is retracted, the stop part is a locking wedge, the locking wedge has a locking position and an unlocking position, the locking wedge has an inclined surface, and in the locking position, the locking The inclined surface of the wedge abuts against the lower part of the first end of the second telescopic oil cylinder along the retracting direction of the first end of the second telescopic oil cylinder, so as to limit the movement of the second telescopic oil cylinder. The first end is retracted, and in the unlocked position, the locking wedge is disengaged from the first end of the second telescopic oil cylinder; the second locking assembly further includes a second driving member mounted on the On the pressing arm, the locking wedge is used to drive the locking wedge to move to at least one of the locking position and the unlocking position; the second locking assembly further includes a support frame, the support frame is installed on the On the upper part of the upper vertical arm, the locking wedge is mounted on the support frame and can move in a direction close to or away from the first end of the second telescopic oil cylinder, and the support frame is formed with a groove extending along the telescopic stroke of the first end of the second telescopic oil cylinder to guide the movement trajectory of the first end of the second telescopic oil cylinder, and at the second telescopic oil cylinder After the first end of the telescopic cylinder is retracted, the bottom of the groove supports the first end.

In another exemplary embodiment of the present disclosure, the second locking assembly includes a stopper for restricting the retraction of the first end of the second telescopic oil cylinder, and the stopper includes a baffle plate installed on the an eccentric wheel mounted on the pressing arm and capable of rotating relative to the pressing arm to a locked position and an unlocked position, in which the eccentric abuts on the baffle plate, thereby restricting the extension and contraction of the first end of the second telescopic oil cylinder, and in the unlocked position, the eccentric The wheel is disengaged from the baffle, so that the first end of the second telescopic oil cylinder can be telescopic; the eccentric wheel includes a long-diameter end and a short-diameter end, and in the locked position, the long-diameter end rotates to at the baffle and abutting on the baffle, in the unlocking position, the short-diameter end rotates to the baffle and separates from the baffle; the second locking assembly further includes a third drive A member is mounted on the pressing arm for driving the eccentric to move to at least one of the locking position and the unlocking position.

The blade lifting tool provided by the present disclosure has the following beneficial effects: the pitch rotation mechanism of the blade lifting tool includes a pitch rotation shaft and a rotation shaft drive assembly, and both ends of the pitch rotation shaft are respectively connected with the blade clamp and the rotation shaft drive assembly, so as to be driven by a worm. The turbine rotates, which in turn drives the blade clamp to rotate, thereby adjusting the pitch angle of the blade.

Description of drawings

The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a structural diagram of a blade hoisting tool provided by an exemplary embodiment of the present disclosure.

FIG. 2 is an exploded view of the blade hoisting tool of FIG. 1 .

FIG. 3 is a working principle diagram of the turbine worm assembly in FIG. 1 .

FIG. 4 is a structural diagram of a blade hoisting tool provided by another exemplary embodiment of the present disclosure.

FIG. 5 is a partial exploded view of the blade hoisting tool of FIG. 4 .

FIG. 6 is a structural diagram of a blade hoisting tool provided by an exemplary embodiment of the present disclosure.

FIG. 7 is a use state diagram of the blade hoisting tool in FIG. 6 .

FIG. 8 shows an exploded view of the blade clamping unit of FIG. 1 .

FIG. 9 is a perspective view showing the internal structure of the blade clamping unit in FIG. 8 .

FIG. 10 shows an exploded view of the blade clamping unit of FIG. 8 .

FIG. 11 shows an enlarged view of the first locking assembly of FIG. 8 .

Figures 12, 13 and 14 show schematic diagrams of a process in which the second locking assembly locks the pressing arm relative to the upper vertical arm.

FIG. 15 is a structural diagram of a blade clamping unit according to another embodiment.

16 shows a schematic diagram of a blade clamp according to an exemplary embodiment of the present disclosure.

FIG. 17 is a schematic diagram showing the state of the blade clamp in FIG. 16 before it is used for blade pitching.

FIG. 18 is a schematic diagram showing the state after the blade clamp in FIG. 16 is used for blade pitching.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the embodiments of the present disclosure are limited to the embodiments set forth herein, and the features of the various embodiments in the present disclosure may be combined arbitrarily. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

An exemplary embodiment of the present disclosure provides a blade lifting tool. The blade lifting tool includes a hanger 200, a blade clamp 100, a support frame 610, and a pitch rotation mechanism 600. The pitch rotation mechanism 600 is connected to the lower end of the hanger 200, and the blade clamp 100 It is connected to the pitch rotation mechanism 600 to perform pitch rotation with respect to the hanger 200 under the driving of the pitch rotation mechanism 600 to perform a pitch operation.

The pitch rotation mechanism 600 includes a support frame 610, a pitch rotation shaft 620, and a pitch drive mechanism. The pitch rotation shaft 620 is rotatably disposed on the support frame 610, and the first end of the pitch rotation shaft 620 is used to connect with the blade clamp 100, and the second end of the pitch rotation shaft 620 is connected with the pitch drive mechanism to receive the pitch drive mechanism The provided rotational driving force drives the pitch rotation shaft 620 to rotate, and finally drives the blade clamp 100 to rotate.

The pitch drive mechanism may be a turbine worm assembly 630, the turbine worm assembly 630 may include a turbine 6301 and a worm 6302 for driving the turbine 6301 to rotate, the turbine 6301 is coaxially disposed with the pitch rotation shaft 620 and fixed to the outer circumference of the second end of the pitch rotation shaft 620 , to drive the turbine 6301 to rotate through the worm 6302, and then drive the blade clamp 100 to rotate, so as to adjust the pitch angle of the blade.

The pitch rotation shaft 620 is rotatably supported on the support frame 610, and both ends of the pitch rotation shaft 620 are respectively connected with the turbine worm assembly 630 and the blade clamp 100, so as to drive the turbine 6301 to rotate through the worm 6302, thereby driving the blade clamp 100 to rotate, Thereby adjusting the pitch angle of the blade.

FIG. 1 is a structural diagram of a blade hoisting tool provided by an exemplary embodiment of the present disclosure. FIG. 2 is an exploded view of the blade hoisting tool of FIG. 1 .

Referring to FIGS. 1 and 2 , in this embodiment, the support seat 613 may be a structural form of the support frame 610 , the support seat 613 may be a hexahedron structure, and the support seat 613 is provided with front and rear along the support seat 613 . The first through hole extending in the direction is for the pitch rotation shaft 620 to pass through. For example, but not limited to, the first through hole can pass through the support base 613 in the front-rear direction. The front-rear direction of the support seat 613 defined in this embodiment may be parallel to the extending direction of the pitch rotation axis 620 , in other words, the front-rear direction of the support seat 613 is a direction perpendicular to the main beam 120 of the blade clamp. In addition, the support base 613 may further have a second through hole through which the worm 6302 passes, and the second through hole may be perpendicular to the first through hole but not intersect.

The pitch shaft 620 may include a spline shaft section, a turbine shaft section, and an optical shaft section disposed between the spline shaft section and the turbine shaft section. Specifically, the spline shaft section may be located at the first position of the pitch shaft 620 . The spline shaft segment can be inserted on the blade clamp 100 to drive the blade clamp 100 to rotate together. The turbine shaft segment may be located at the second end of the pitch rotation shaft 620, and a turbine worm screw assembly 630 is provided on the outer circumference of the turbine shaft section. For example, but not limited to, the turbine 6301 may be sleeved on the outer circumference of the pitch rotation shaft 620 and be connected with the pitch shaft. The rotating shaft 620 is arranged coaxially. The optical shaft segment may be located in the middle of the pitch rotation shaft 620, and the optical shaft segment may be rotatably connected to the support frame 610 through a bearing. The linear motion of the worm 6302 can drive the turbine 6301 to rotate around the pitch rotation axis 620, thereby driving the pitch rotation axis 620 to rotate, and also driving the blade clamp 100 to rotate together. For example, but not limited to, driven by the pitch rotation shaft 620, the pitch rotation range of the blade clamp 100 may be between +40° and -220°.

In this embodiment, in order to improve the strength of the output load of the turbine worm assembly 630, the number of worms 6302 may be increased. For example, but not limited to, two worms 6302 may be symmetrically arranged on the outer circumference of the turbine 6301. For details, please refer to FIG. 3 .

FIG. 4 is a structural diagram of a blade hoisting tool provided by another exemplary embodiment of the present disclosure. FIG. 5 is a partial exploded view of the blade hoisting tool of FIG. 4 .

In the examples shown in FIGS. 4 and 5 , the blade clamp 100 is capable of pitch rotation about the pitch rotation axis 650 relative to the hanger 200 to perform a pitch operation. As shown in FIGS. 4 and 5 , the pitch rotating shaft 650 is fixed on the support frame 610 and extends in the horizontal direction. A shaft hole 231 is provided at the lower end of the hanger 200 , and the pitch rotating shaft 650 is mounted on the hanger through a bearing. in the shaft hole 231 at the lower end of the frame 200 .

The blade hoisting tool according to the embodiment of the present disclosure further includes a pitch drive mechanism 640 , two ends of which are connected to the hanger 200 and the support frame 610 respectively, so as to drive the support frame 610 around the pitch rotation axis 650 relative to the pitch rotation axis 650 . The hanger 200 performs pitch rotation because the blade clamp 100 is connected to the support frame 610 through the pitch rotation shaft 620 , that is, the support frame 610 rotates with the blade clamp 100 around the pitch rotation shaft 650 , thereby performing pitch operation.

4 and 5 , the support frame 610 includes a support base 613 and a support plate 611 extending from the support base 613 , and the support plate 611 may be used to support one end of the pitch driving mechanism 640 . The pitch driving mechanisms 640 may be provided as two, and thus, the support plates 611 may be provided as a pair. The above-mentioned pair of support plates 611 can be disposed on the two side surfaces of the support seat 613 and located on both sides of the turbine worm assembly 630, and can be arranged to be perpendicular to the length direction of the main beam 120 of the blade clamp 100. The support plates 611 and the blade clamp 100 are respectively located on both sides of the pitch rotating shaft 650, one end of the pitch driving mechanism 640 is arranged on the support plate 611, and the other end of the pitch driving mechanism 640 is connected to the hanger 200 to drive the blade clamp 100 around the pitch rotating shaft 650 rotation can drive the blade 1 to pitch in a wide range, for example, but not limited to, the pitch angle can be any value between -20° and +120°. Preferably, the pitch angle can be any value between -7° and 90°.

The pitch rotating shafts 650 may be disposed on both sides of the support frame 610 and extend in a direction parallel to the main beam 120 of the blade clamp 100 . The rotation axis of the pitch rotation shaft 650 is arranged perpendicular to the rotation axis of the pitch rotation shaft 620 .

The hanger 200 may include two vertical beams 230 extending downward, the two vertical beams 230 being spaced apart from each other, and the support frame 610 may be disposed between the two vertical beams 230 . A shaft hole 231 is defined at the lower end of the vertical beam 230 , and the pitch rotating shaft 650 passes through the shaft hole 231 through a bearing. The pitch rotating shaft 650 may be integrally formed as a shaft, and after passing through the support frame 610 , both ends are inserted into the shaft holes 231 respectively. In order to avoid interference with the pitch rotation axis 620 , the two need to be offset from each other in the height direction of the support frame 610 . In this case, the size of the support frame 610 may be relatively large. Preferably, the pitch rotating shaft 650 may include two rotating shaft segments, which are respectively connected to the side surfaces of the support frame 610 and are coaxially arranged. Since the pitch rotating shaft 650 does not have a section passing through the support frame 610 , even if the pitch rotating shaft 620 is disposed in the same plane, no interference occurs, so the size of the support frame 610 can be relatively compact.

Specifically, two rotating shaft segments may be disposed on both sides of the support base 613 in the width direction, for example, but not limited to, one end of the rotating shaft segment is fixed on the side surface of the support base 613 in the width direction, and the pitch rotating shaft 650 Extending along the width direction of the support base 613 , the two rotating shaft segments may be coaxially arranged.

The pitch driving mechanism 640 can be a telescopic oil cylinder, one end of the telescopic oil cylinder can be connected to the support plate 611 , and the other end of the telescopic oil cylinder can be connected to the vertical beam 230 . In the example shown in the drawings, the telescopic oil cylinder includes a cylinder block 641 and a piston rod 642 , the piston rod 642 can be pivotally connected to the support plate 611 , and the cylinder block 641 can be pivotally connected to the vertical beam 230 . For example, a pitch driving pivot shaft 612 is provided at the lower part of the side of the support plate 611 away from the pitch rotating shaft 650, the free end of the piston rod 642 is pivotally connected to the pitch driving pivot shaft 612, and the free end of the cylinder 641 is pivoted connected to the blade clamp 100 .

Specifically, a pivot hole is provided at the lower part of the side of the support plate 611 away from the pitch rotating shaft 650 , the pitch driving pivot shaft 612 can pass through the pivot hole, and the free end of the piston rod 642 can pivot on the pitch drive pivot shaft 612 . The free end of the cylinder 641 can be pivoted on the upper part of the vertical beam 230 to drive the blade clamp 100 and the pitch rotation mechanism 600 to rotate around the pitch rotation axis 650 through the expansion and contraction of the piston rod 642 relative to the cylinder 641 .

FIG. 6 is a structural diagram of a blade hoisting tool provided by an exemplary embodiment of the present disclosure. FIG. 7 is a use state diagram of the blade hoisting tool in FIG. 6 .

Compared with the blade hoisting tool in FIG. 4 , in this embodiment, the support frame 610 further includes a box structure disposed away from one end side of the blade clamp 100 . At least one of the cabinet 681, the generator 682, the counterweight block, the battery, and the frequency conversion cabinet, by arranging the above-mentioned components such as the electric control cabinet 681, the counterweight block and the like in the accommodating chamber, the counterweight can be provided for the entire blade hoisting tool, Therefore, the structure of the blade hoisting tool is simplified, and the volume of the blade hoisting tool is reduced. In this embodiment, the blade hoisting tool further includes a counterweight adjusting mechanism 684 located under the front part of the housing structure to adjust the position of the counterweight block. Further, a bottom support can be provided at the bottom of the box structure. When used at sea, the bottom support can increase the distance between the ground of the box structure and the operating platform, thereby preventing seawater from entering the box structure and avoiding electricity. The control cabinet 681 is limited to being generated when it encounters water.

Continuing to refer to FIGS. 1 to 5 , the blade clamp 100 includes a main beam 120 , and a spline groove is provided in the middle of the main beam 120 , and the spline groove can be matched with the spline shaft section of the pitch rotation shaft 620 . A vertical beam 230 (as shown in FIG. 5 ) can be fixedly arranged behind the main beam 120 , the lower end of the vertical beam 230 is provided with a shaft hole 231 for accommodating the pitch rotating shaft 650 , and the upper end of the vertical beam 230 can be provided with a drive Mechanism connection part, the drive mechanism connection part can be set as a through hole for the pin shaft to pass through, the free end of the cylinder 641 can be connected to the vertical beam 230 through the pin shaft, but not limited to this.

Referring to FIGS. 1 to 7 , the blade clamp 100 includes a main beam 120 and blade clamping units 110 and 130 disposed at both ends of the main beam 120 . The pitch rotation mechanism is connected to the main beam 120 and can drive the main beam 120 to rotate around the pitch rotation axis 620 . .

As shown in the figure, the blade clamping unit 110 and the blade clamping unit 130 are respectively used for clamping the blade tip portion and the blade root portion of the blade, so they can also be referred to as a blade tip clamping mechanism and a blade root clamping structure, respectively. The structure of the blade clamping unit 110 and the blade clamping unit 130 are substantially the same, and the difference is that the size adjustment range of the clamping opening is different. Therefore, in the following description, only the structure of the blade clamping unit 110 will be described.

8 , the blade clamping units 110 and 130 include an upper clamping assembly 140 , a lower clamping assembly 150 and a jaw adjusting unit 115 , and the jaw adjusting unit 115 is connected between the upper clamping assembly 140 and the lower clamping assembly 150 , is used to adjust the size of the clamping opening formed by the upper clamping assembly 140 and the lower clamping assembly 150, and the clamping opening adjustment unit 115 can adjust the size of the clamping opening formed by the upper clamping assembly 140 and the lower clamping assembly 150, thereby Suitable for clamping blades of different sizes.

Specifically, the blade clamping unit 110 may further include a first locking component 116 for locking the jaw adjusting unit 115 after the jaw adjusting unit 115 adjusts the size of the jaw to an appropriate size, thereby preventing the upper The clamp assembly 140 and the lower clamp assembly 150 move relative to each other.

Continuing to refer to FIG. 8 , the upper clamping assembly 140 includes a pressing arm 111 and an upper vertical arm 112 extending downward from one end of the pressing arm 111 , and the pressing arm 111 can pivot relative to the upper vertical arm 112 . Specifically, referring to FIG. 6 , the pivoting end of the pressing arm 111 is pivoted on the upper vertical arm 112. When the blade needs to be loaded, the free end of the pressing arm 111 is lifted up. After the blade is loaded in place, the pressing arm 111 The free end of the swivel is then rotated downwards to clamp the blade. The blade clamping unit 110 according to the embodiment of the present disclosure may further include an angle adjustment unit 117 and a second locking assembly 118 . The angle adjustment unit 117 is used to adjust the pivoting angle of the pressing arm 111 , and the second locking assembly 118 is used to lock the pressing arm 111 .

The lower clamping assembly 150 includes a supporting arm 113 and a lower upright arm 114 extending upward from one end of the supporting arm 113 , the lower upright arm 114 is connected with the upper upright arm 112 so as to be formed with the lower clamping assembly through the upper clamping assembly 140 A space for holding the blade 1 (ie, a holding port). The jaw adjusting unit 115 is connected between the upper vertical arm 112 and the lower vertical arm 114, and is used to drive the upper clamping assembly to move relative to the lower clamping assembly, so as to adjust the distance between the pressing arm 111 and the supporting arm 113, Thereby adjusting the size of the jaws. The first locking assembly 116 is used to lock the upper upright arm 112 relative to the lower upright arm 114 . The second locking assembly 118 is used to lock the pressing arm 111 relative to the upper vertical arm 112 .

According to the blade clamp 100 according to the exemplary embodiment of the present disclosure, a clamping space (ie, a clamping opening) having a "C" shape or a "claw" shape is formed by the upper clamping assembly and the lower clamping assembly, the pressing arm 111 and the The support arm 113 forms two clamp feet for clamping the opposite surfaces of the blade. The upper vertical arm 112 and the lower vertical arm 114 form a telescopic vertical arm, which is connected between the pressing arm 111 and the support arm 113 . In addition, the upper vertical arm 112 and the lower vertical arm are driven to move relative to each other by the jaw adjusting unit 115 , so as to adjust the clamping range of the blade in a wide range, and the angle adjusting unit 117 drives the pressing arm 111 to rotate relative to the upper vertical arm 112 , to further adjust the clamping force of the clamping blade. Specifically, the pressing arm 111 can be rotated counterclockwise to increase the entry space of the blade, or it can be rotated clockwise and pressed down to apply a pressing force to the blade. In addition, the height positions of the upper vertical arm 112 and the lower vertical arm 114 can be locked by the first locking assembly 116 , and the rotation angle of the pressing arm 111 relative to the upper vertical arm 112 can be locked by the second locking assembly 118 , thereby maintaining the blade clamp The clamping state between the 100 and the blade prevents the blade clamp from loosening after clamping the blade, and ensures the reliability of clamping.

8 to 10 , in an embodiment, the upper vertical arm 112 and the lower vertical arm 114 may be a cylindrical hollow structure, that is, a hollow cylindrical shape, and are formed into a structure nested with each other, as shown in the figures, can be A rectangular hollow structure is formed. Specifically, the lower part of the upper vertical arm 112 is nested inside the upper part of the lower vertical arm 114, and can slide relatively along the height direction (Y direction shown in FIG. The height/length of the telescopic vertical arm formed by the vertical arm 112 and the lower vertical arm 114 is to improve the use versatility of the blade hoisting tool. For example, when the number of parts where the upper vertical arm 112 and the lower vertical arm 114 are nested with each other increases, that is, the height/length of the telescopic vertical arm becomes smaller, the distance between the pressing arm 111 and the supporting arm 113 becomes smaller, so that the clamping The opening degree of the mouthpiece becomes smaller; on the contrary, when the nested part of the upper vertical arm 112 and the lower vertical arm 114 is reduced, the overall height/length of the telescopic vertical arm becomes larger, and the compression arm 111 and the supporting arm 113 become larger. The distance between them becomes larger, so that the opening degree of the clamping port becomes larger. Optionally, the upper upright arm 112 and the lower upright arm 114 may be formed of stainless steel plates to improve strength and prevent corrosion, but the present disclosure is not limited thereto. This embodiment does not limit the connection method and specific shape of the upper vertical arm 112 and the lower vertical arm 114, as long as the upper vertical arm 112 and the lower vertical arm 114 can move up and down along the vertical direction (Y direction) to adjust the pressing arm The distance between 111 and the supporting arm 113 is sufficient.

The jaw adjusting unit 115 may include a distance telescopic drive mechanism disposed inside the lower vertical arm 114 . The distance telescopic drive mechanism can adopt a drive mechanism with a large thrust and a large stroke, so as to adjust the clamping range of the blade 1 in a wide range, that is, to adjust the size of the clamping opening. The pitch telescopic drive mechanism may be a telescopic cylinder, eg an automatically controlled hydraulic cylinder. One end of the telescopic oil cylinder is connected to the lower vertical arm 114 , and the other end is connected to the upper vertical arm 112 . The telescopic stroke of the telescopic oil cylinder can be relatively large, and the linear telescopic movement of the telescopic oil cylinder drives the upper vertical arm 112 to move relative to the lower vertical arm 114, thereby adjusting the distance between the pressing arm 111 and the supporting arm 113, but the present disclosure Not limited to this, the jaw adjusting unit 115 can also be other driving elements that can drive the upper vertical arm 112 and the lower vertical arm 114 to move relatively, thereby adjusting the distance between the pressing arm 111 and the supporting arm 113 to realize linear telescopic driving For example, it can also be a cylinder, an electric screw, or a bolt with a nut, etc.

The opening and closing degree of the clamping opening can be adjusted by the clamping opening adjustment unit 115 in coordination with the lifting and lowering of the upper vertical arm 112 relative to the lower vertical arm 114 .

After the opening and closing degree of the clamping opening is properly adjusted, in order to maintain the size of the clamping opening and hold the blade 1 more stably, a backup first locking component 116 is provided on the basis of the lifting function, as shown in FIGS. 8 to 11 . As shown, the first locking assembly 116 includes a first locking member 1161 , a second locking member 1162 and a first drive member 1163 .

Wherein, the first locking member 1161 is installed on one of the lower upright arm 114 and the upper upright arm 112 . The second locking piece 1162 is mounted on the other of the lower upright arm 114 and the upper upright arm 112, and is horizontally opposite to the first locking piece 1161, and has a locking position and an unlocking position. In the locking position, the second locking member 1162 is combined with the first locking member 1161 to lock the relative positions of the upper clamping assembly 140 and the lower clamping assembly 150 . In the unlocking position, the second locking member 1162 is disengaged from the first locking member 1161 , and at this time, the upper upright arm 112 can move relative to the lower upright arm 114 . The first drive member 1163 may be a telescopic drive member, eg, a hydraulic ram, an air cylinder, or a lead screw. In the example shown in the drawings, the first driving member 1163 is an oil cylinder or an air cylinder, the cylinder part of the first driving member 1163 is mounted on the lower part of the upper arm 112, the piston rod of the first driving member 1163 is connected to the second locking member 1162 is connected for driving the second locking member 1162 to move to at least one of the locking position and the unlocking position.

In this embodiment, the first locking member 1161 is a long rack, mounted on the lower vertical arm 114 and extending along the direction in which the upper vertical arm 112 moves relative to the lower vertical arm 114 (the Y direction shown in FIG. 11 ). The second locking member 1162 is a short rack, installed opposite to the long rack, and can be driven by the first driving member 1163 along a direction perpendicular to the direction in which the upper vertical arm 112 moves relative to the lower vertical arm 114 (Fig. 11), so that in the locked position, the short rack and the long rack mesh with each other. In this embodiment, the stepless locking between the upper vertical arm 112 and the lower vertical arm 114 can be achieved by using the engagement method of the long rack and the short rack. The length of the long rack can be matched with the telescopic stroke of the first driving member 1163 , or with the relative moving distance between the upper clamping assembly 140 and the lower clamping assembly 150 . The length of the short rack can be shorter than the length of the long rack, and the specific length is not limited as long as it has the strength to lock the upper vertical arm 112 and the lower vertical arm 114 to each other.

Wherein, the first driving member 1163 may be a telescopic oil cylinder installed on the upper vertical arm 112, and a short rack is provided at the first end of the telescopic oil cylinder (ie, the extension end of the piston rod), but the present disclosure is not limited to this, the first A driving member 1163 may also be other driving elements capable of driving the second locking piece 1162 to move toward or away from the first locking piece 1161 .

11 shows that the first locking piece 1161 is formed on the inner side surface of the lower vertical arm 114, the first driving member 1163 is mounted on the upper vertical arm 112, and the second locking piece 1162 is mounted on the telescopic end of the first driving member 1163 , but the positions of the first locking piece 1161 and the second locking piece 1162 can be interchanged as required.

In this embodiment, the relative position between the upper vertical arm 112 and the lower vertical arm 114 is locked by the long rack and the short rack being engaged with each other, but the present disclosure is not limited thereto, the first locking member 1161 and the second locking member 1162 can also adopt other known locking structures in the prior art, for example, a locking hole is matched with a locking pin, etc., as long as the first locking member 1161 and the second locking member 1162 cooperate with each other, the upper vertical arm 112 and the lower vertical arm can be realized. 114 can be locked or released.

In the above, the upper vertical arm 112 is driven to move relative to the lower vertical arm 114 by the jaw adjusting unit 115 , so as to adjust the size of the clamping opening in a wide range in the vertical direction.

In order to further adjust the tightness of the clamping blade 1 , the angle adjustment unit 117 can drive the pressing arm 111 to rotate relative to the upper vertical arm 112 to adjust the opening and closing state of the clamping opening of the blade 1 .

8 to 10 , the blade clamping unit 110 according to an embodiment of the present disclosure may further include an angle adjusting unit 117 and a second locking assembly 118 . The angle adjustment unit 117 is used to adjust the pivoting angle of the pressing arm 111 relative to the upper vertical arm 112 to adjust the inclination angle of the pressing arm 111 relative to the upper vertical arm 112 . The second locking assembly 118 is used to lock the pressing arm 111 relative to the upper vertical arm 112 , so that the safety of the blade clamping unit 110 can be improved.

Specifically, the upper part of the upper vertical arm 112 is provided with a pivot shaft 1121 , and the pressing arm 111 is connected to the upper vertical arm 112 through the pivot shaft 1121 . The angle adjustment unit 117 may include a second telescopic drive mechanism, the second telescopic drive mechanism may be a second telescopic oil cylinder, the first end of the second telescopic oil cylinder is hinged with the lower part of the upper vertical arm 112, and the second end of the second telescopic oil cylinder The end of the pressing arm 111 is hinged, so as to drive the pressing arm 111 to pivot relative to the upper vertical arm 112 around the pivot shaft 1121 , and adjust the inclination angle of the pressing arm 111 relative to the upper vertical arm 112 to be driven by the angle adjustment unit 117 The pressing arm 111 rotates relative to the upper vertical arm 112 to further adjust the magnitude of the clamping force for clamping the blades.

Specifically, the upper part of the upper vertical arm 112 is provided with a pivot shaft 1121 (as shown in FIG. 9 and FIG. 10 ), and the pressing arm 111 is connected to the upper vertical arm 112 through the pivot shaft 1121 . The first end of the second telescopic oil cylinder can be hinged with the lower part of the upper vertical arm 112, and the second end of the second telescopic oil cylinder can be hinged with the end of the pressing arm 111, so as to drive the pressing arm 111 around the pivot shaft 1121 relative to the upper The upright arm 112 pivots.

Similar to the first telescopic cylinder, the second telescopic cylinder may be an automatically controlled hydraulic cylinder. The second telescopic oil cylinder can adopt the same structural design as the first telescopic oil cylinder, or can adopt a different structural design, that is, one adopts a large thrust and large stroke design, and the other adopts a high-precision small stroke design to meet the requirements of different precisions. and travel control requirements. In addition, in addition to the hydraulic cylinder, the angle adjustment unit 117 can also be other driving elements that can drive the pressing arm 111 to rotate relative to the upper vertical arm 112 around the pivot axis 1121, for example, it can also be an air cylinder or an electric screw or a bolt with a nut, etc. .

The upper end of the upper vertical arm 112 may be connected with a mounting plate 1122 , the mounting plate 1122 extends laterally relative to the upper end of the upper vertical arm 112 , and the pivot shaft 1121 may be installed at the end of the mounting plate 1122 so as to be spaced apart from the upper end of the angle adjustment unit 117 . The position where the pressing arm 111 is connected to the pivot shaft 1121 is spaced apart from the end of the pressing arm 111, so that after the end of the pressing arm 111 is connected to the upper end of the angle adjusting unit 117, the pivot shaft 1121 is used as a rotating support shaft, The pressing arm 111 can pivot around the pivot shaft 1121 under the driving of the angle adjusting unit 117, so as to adjust the inclination angle of the pressing arm 111 and adjust the clamping force on the blade accordingly.

After the angle adjusting unit 117 drives the pressing arm 111 to rotate relative to the upper vertical arm 112 to a desired angle, the rotation positions of the pressing arm 111 and the upper vertical arm 112 can be locked by the second locking assembly 118 , thereby maintaining the blade clamp and the blade 1 clamping state.

Specifically, the second locking assembly 118 may include a stopper for restricting the retraction of the first end of the second telescopic cylinder, so as to prevent the pressing arm 111 from pivoting upwardly to open the blade in the state of clamping the blade 1 , causing the blade 1 fall off.

Referring to FIGS. 9 and 10 , in an embodiment, the stop may be a locking wedge 1181 . The locking wedge 1181 has a locking position and an unlocking position. In the locking position, the locking wedge 1181 abuts against the first end of the second telescopic oil cylinder to limit its retraction; in the unlocking position, the locking wedge 1181 is in contact with the second telescopic cylinder. The first end of the cylinder is disengaged, thereby releasing the first end of the second telescopic cylinder so that it can be retracted.

In order for the locking wedge 1181 to be switched between its locking position and its unlocking position, the second locking assembly 118 may further include a second driving member 1182 and a support frame 1183, the second driving member 1182 may be a telescopic oil cylinder to push the locking wedge Block 1181 moves between a locked position and an unlocked position. The cylinder of the second driving member 1182 is mounted on the support frame 1183, and the piston rod of the second driving member 1182 is connected to the locking wedge 1181 for driving the locking wedge 1181 to move to at least one of its locking position and unlocking position. .

The second locking assembly 118 may also include a support bracket 1183 . A support frame 1183 is installed on the upper part of the upper vertical arm 112, and a locking wedge 1181 is installed on the support frame 1183 and can move in a direction close to or away from the first end of the second telescopic oil cylinder. A groove 1184 may be formed on the support frame 1183, and the groove 1184 extends along the telescopic stroke of the first end of the second telescopic oil cylinder to guide the movement trajectory of the first end of the second telescopic oil cylinder, and the groove 1184 extends along the telescopic stroke of the first end of the second telescopic oil cylinder to guide the movement trajectory of the first end of the second telescopic oil cylinder. After the first end is retracted, the bottom of the groove 1184 supports the first end.

Optionally, the locking wedge 1181 may have an inclined surface 1181a, and in the locking position, the inclined surface of the locking wedge 1181 abuts against the lower portion of the first end of the second telescopic oil cylinder along the direction in which the first end of the second telescopic oil cylinder is retracted , to limit the retraction of the first end of the second telescopic cylinder. Through the inclined surface design, when the locking wedge 1181 is pressed by an opposite force, the friction angle self-locking state is formed due to the support of the inclined surface with an inclined angle, so that when the blade is clamped in place, the second driving member 1182 pushes the locking wedge After 1181 reaches the locked position, the second driving member 1182 does not need to provide a thrust force to lock the telescopic state of the angle adjustment unit 117, and maintain the rotation angle between the pressing arm 111 and the upper vertical arm 112, so that there is no risk for the blade to be securely clamped .

12 to 14 show the process in which the angle adjusting unit 117 drives the pressing arm 111 to rotate relative to the upper vertical arm 112 and is locked by the locking wedge 1181 . As shown in FIG. 12, the pressing arm 111 is in a state of outward rotation relative to the upper vertical arm 112. At this time, the first end of the second telescopic oil cylinder is in a retracted state; as shown in FIG. 13, the second telescopic oil cylinder The first end protrudes and moves upward along the groove 1184 of the support frame 1183, thereby driving the pressing arm 111 to rotate downward relative to the upper vertical arm 112; as shown in FIG. 14, when the pressing arm 111 is relatively After the arm 112 is rotated in place, the formed clamping opening can clamp the blade 1. At this time, the second driving member 1182 pushes the locking wedge 1181 to move to the left to the locking position, that is, the locking wedge 1181 is embedded in the second telescopic cylinder. Between one end and the support frame 1183, and the inclined surface of the locking wedge 1181 abuts against the lower part of the first end of the second telescopic oil cylinder, thereby restricting the retraction of the first end of the second telescopic oil cylinder. At the same time, if the second driving member 1182 drives the locking wedge 1181 to the unlocking position after the installation of the blade is completed, at this time, the first end of the second telescopic cylinder can be freely extended and retracted, so that the clamping opening is loosened, and the blade can be released. Thereby, the safe disassembly of the blade can be completed.

The end of the piston rod of the second telescopic oil cylinder may be provided with a protrusion, so that the end of the piston rod can lock with the locking wedge 1181 between the first end of the telescopic oil cylinder of the distance telescopic drive mechanism and the support frame 1183 The wedge 1181 interferes, preventing the piston rod from retracting.

But the present disclosure is not limited thereto, and in another embodiment, as shown in FIG. 15 , the stopper may include a baffle 1185 and an eccentric 1186 . The baffle 1185 is mounted on the upper vertical arm 112 and arranged on the telescopic path of the piston rod of the second telescopic oil cylinder, for example, on the inner side surface of the upper vertical arm 112 . The eccentric wheel 1186 is installed on the end of the piston rod of the second telescopic oil cylinder, and can be rotated to the locking position and the unlocking position. The expansion and contraction of the piston rod of the telescopic oil cylinder; in the unlocked position of the eccentric wheel 1186, the eccentric wheel 1186 is disengaged from the baffle plate 1185, so that the first end of the second telescopic oil cylinder can be telescopic. The eccentric wheel 1186 can be disc-shaped, which includes a long diameter end and a short diameter end. A predetermined gap is set between the baffle plate 1185 and the piston rod of the second telescopic oil cylinder, and the predetermined gap is larger than the end diameter of the eccentric wheel 1186 and smaller than the eccentric wheel 1186 long diameter. In the locked position, the long-diameter end rotates to the baffle 1185 and abuts on the baffle 1185 to prevent the piston rod of the second telescopic cylinder from retracting. In the unlocked position, the short-diameter end rotates to the baffle 1185 and contacts the baffle 1185 is separated, and the piston rod can freely extend and retract through the baffle 1185.

Likewise, in order for the eccentric 1186 to be switchable between its locked position and its unlocked position, the second locking assembly 118 may further include a third driving member 1187, which may be a telescopic driving member, such as a hydraulic cylinder, an air cylinder, or a lead screw . In the example shown in the drawings, the third driving member 1187 can be a telescopic oil cylinder, the cylinder of the third driving member 1187 can be mounted on the pressing arm 111, the piston rod of the third driving member 1187 is hinged to the eccentric wheel 1186, Used to drive the eccentric 1186 to rotate between the locked and unlocked positions.

Above, the specific structures of the jaw adjusting unit 115 , the angle adjusting unit 117 , the first locking assembly 116 , and the second locking assembly 118 for adjusting and locking the opening and closing degree of the clamping ports are described above with reference to the accompanying drawings.

Further, the upper clamping assembly 140 and the lower clamping assembly 150 in this embodiment are respectively provided with an upper limit block 1142 and a lower limit block 1141, which are used for checking after the blades are installed in place, so that the blades are installed and fit in place. One end of the upper limit block 1142 can be fixedly connected to the upper vertical arm 112, and the other end of the upper limit block 1142 can be provided with a flexible gasket to flexibly contact the surface of the blade to prevent scratches on the blade. One end of the lower limit block 1141 can be fixedly connected to the lower vertical arm 114, and the other end of the lower limit block 1141 can also be provided with a flexible gasket. Preferably, the upper limit block 1142 can be disposed at the corner of the upper clamping assembly 140 formed by the upper vertical arm 112 and the pressing arm 111 , and the lower limit block 1141 can be disposed at the lower clamp formed by the lower vertical arm 114 and the support arm 113 Hold the corners of assembly 150.

16 shows a schematic diagram of a blade clamp according to an exemplary embodiment of the present disclosure. FIG. 17 is a schematic diagram showing the state of the blade clamp in FIG. 16 before it is used for blade pitching. FIG. 18 is a schematic diagram showing the state after the blade clamp in FIG. 16 is used for blade pitching.

16 to 18 , the blade clamp 100 may further include a pitch driving member 141 for driving the blade clamping units 110 and 130 to rotate relative to the main beam 120 ; guide rails 142 formed on the blade clamping units 110 and 130 and the main beam 120 and a track groove 143 , which is formed on the other of the blade clamping units 110 and 130 and the main beam 120 and is movable relative to the guide rail 142 .

According to the blade clamp of the exemplary embodiment of the present disclosure, the blade 1 can be pitched in a small range during the assembly process of the wind turbine and the blade hoisting process, so as to align the blade 1 with the hub and accurately connect it to the hub, During the pitching process, the cooperation of the guide rails 142 and the track grooves 143 helps the blade clamping units 110 and 130 to rotate stably relative to the main beam 120 , thereby ensuring the safety and stability of the blade clamp 100 during the pitching process with the blade 1 . For example, but not limited to, the blade hoisting tool provided in this embodiment can be pitched within an angle range of -10° to +10°.

Specifically, the pitch drive member 141 is a linear telescopic drive mechanism. One end of the pitch drive member 141 is hinged to the lower part of the lower vertical arm 114 , and the other end is hinged to the end of the main beam 120 , through the linear expansion and contraction of the pitch drive member 141 . The blade clamping units 110 , 130 are driven to rotate relative to the main beam 120 . The linear telescopic drive mechanism is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is arranged on the main beam 120 , and the end of the piston rod of the hydraulic cylinder is connected to the lower vertical arm 114 . Both ends of the main beam 120 have accommodating spaces for accommodating hydraulic cylinders. The ends of the piston rods of the hydraulic cylinders are connected to the lower vertical arms 114 through connecting columns that are perpendicular to the lower vertical arms 114. The opening slot 146 where the connecting post interferes with the pitch driving member 141 . The opening groove 146 is an opening extending along the telescopic direction of the pitch driving member 141 . A guide rail 142 is also formed on the other side surface of the lower upright arm 114 opposite to the side surface.

8 to 10 and 15 , both the upper clamping assembly 140 and the lower clamping assembly 150 may include a conformable pressing member 119 and a conformable pressing member 119 for pushing the conforming pressing member 119 along the pressing arm 111 or the supporting arm The pressing member driving unit 1131 that moves in the extending direction of 113, the pressing member driving unit 1131 may include a cylinder and a piston rod. The free end can be hinged on the pressing arm 111 or the supporting arm 113, so as to drive the following pressing member 119 to move through the telescopic driving of the piston rod relative to the cylinder, so that the following pressing member 119 is located in a position in close contact with the blade, That is to say, by adjusting the fit between the blade and the conformal pressing member 119, the blade is clamped more firmly, thereby improving the safety during the installation of the blade. The telescopic direction of the pressing member driving unit 1131 is parallel to the extending direction of the pressing arm 111 or the supporting arm 113 . Further, the pressing member driving unit 1131 is sleeved in the inner cavity of the pressing arm 111 or the supporting arm 113, so that the overall structure of the blade clamping unit is beautiful.

The conformal pressing member 119 can be composed of a component whose shape or angle is adjusted according to the external force, so as to be able to conform to the surface of the blade 1 according to the size and airfoil shape of the blade 1 when the blade 1 is clamped. The conformal pressing member 119 in the upper clamping assembly and the conforming pressing member 119 in the lower clamping assembly are similar in structure and face each other. Hereinafter, taking the conforming pressing member 119 in the above clamping assembly as an example, the structure and the connection relationship with other components will be described in detail.

The conformal pressing member 119 can rotate around a first deflection axis 1191 and a second deflection axis 1192, the first deflection axis 1191 extends along the length direction of the blade, and the second deflection axis 1192 extends along the chord length direction of the blade. The chord length direction of the blade 1 is perpendicular to the length direction of the blade 1, which may be the direction from the leading edge to the trailing edge of the blade. In other words, the chordwise direction of the blade is consistent with the extension direction of the pressing arm 111 .

The conformable pressing member 119 of the upper clamping assembly may include a deflection support 1193 and a clamping block 1194 . One side of the deflection support 1193 is rotatably connected to the pressing arm 111 through the first deflection shaft 1191; the clamping block 1194 is rotatably connected to the other side of the deflection support 1193 through the second deflection shaft 1192, so as to ensure the clamping During the process of clamping the blade by the holding block 1194, the degree of fit between the holding block 1194 and the blade 1 in the lateral and longitudinal directions, so that the conformal pressing member 119 can adapt to the different profile changes of the blade.

The specific structure of the conformal pressing member 119 of the lower clamping assembly is the same as that of the conformal pressing member 119 of the upper clamping assembly, the difference is that the deflection support 1193 of the conformal pressing member 119 of the lower clamping assembly is different from that of the conformal pressing member 119 of the lower clamping assembly. The supporting arms 113 are rotatably connected, and the clamping blocks 1194 of the conformal pressing members 119 of the upper and lower clamping assemblies face each other.

Optionally, the conformable pressing member 119 may further include a yaw frame 1195 and a displacement screw 1196 . The yaw frame 1195 is connected with the displacement screw 1196 and can move back and forth along the chord length direction (X direction shown in FIGS. 4 and 5 ) of the blade 1 (the left and right directions in FIGS. 4 and 5 ) under the push of the displacement screw 1196 upward movement), thereby adjusting the position of the conformable pressing member 119 in the extending direction of the pressing arm 111 . The first yaw shaft 1191 may be mounted on the yaw frame 1195 . After each installation and confirmation of the blade shape, manually adjust the displacement screw 1196 on the ground to adapt to the radial deviation caused by the center of gravity of different blade shapes.

Optionally, the surface of the contact part of the clamping block 1194 with the blade 1 can be covered with a rubber layer, nylon block, etc., to prevent damage to the blade when the clamping process collides with the blade, increase the buffer capacity and reduce the wear on the blade.

The blade hoisting tool provided by the present disclosure does not need to use additional turning tooling, can avoid the risks brought by using turning turning tooling and horizontal blade hoisting tool to install the blade when the blade becomes larger and larger, and reduces the blade hoisting tooling The development cost is low, the installation process is simple, and the interface is few.

The blade hoisting tool is equipped with independent pitch rotation and pitch rotation functions, which can not only realize the function of pitching and rotating the blade hoisting tool with blade 1 in the air, but also realize the function of pitching and rotating in the air with the blade hoisting tool. In addition, the blade hoisting tool has a large pitch rotation angle, the angle range is +40°～-220°, and also has a large pitch rotation angle range, the angle range can be -10°～+10°, It can solve the problems and risks brought by the blade hoisting tool that is currently adjusted in a small angle range (30°) when installing the blade. In addition, the blade hoisting tool provided by the present disclosure is equipped with a wind sweeping system, which can solve the problem of high installation tooling cost caused by the need to additionally be equipped with a wind sweeping system whether it is a horizontal blade hoisting tool or a 30° oblique blade hoisting tool. There is no need to purchase separately or add a wind system on the crane, which can keep the blades in a stable state when they are lifted and docked in the air. The blade hoisting tool has the function of real-time adjustment of the position of the center of gravity. When the blade hoisting tool carries the blade in the air for pitching and pitching rotation, the overall center of gravity of the blade and the blade hoisting tool will change, and the operator can adjust the top in real time through the operating handle. Lifting point to balance the spreader and blade as a whole. The movement function of the upper gripping assembly 140 of the blade lifting tool can function as an emergency release system of the blade lifting tool. Under normal circumstances, the pressing arm 111 of the upper clamping assembly 140 holds the blade. After the blade is installed, when the pressing arm 111 cannot be opened and the blade hoisting tool cannot be evacuated from the blade, the angle adjustment unit 117 can be adjusted. When the upper clamping assembly 140 and the blade are moved upward enough to leave enough clearance, the blade lifting tool can be withdrawn from the blade.

In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present disclosure, unless stated otherwise, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood in specific situations.

The features, structures, or characteristics described in this disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present disclosure. However, one skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or with other methods, components, materials, etc., being employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

Claims (15)

1. The blade hoisting tool is characterized by comprising a pitching rotating mechanism (600) and a blade clamp (100), wherein the pitching rotating mechanism (600) comprises a supporting frame (610), a pitching rotating shaft (620) and a rotating shaft driving assembly, the pitching rotating shaft (620) is rotatably arranged on the supporting frame (610), a first end of the pitching rotating shaft (620) is connected with the blade clamp (100), a second end of the pitching rotating shaft (620) is connected with the rotating shaft driving assembly, the rotating shaft driving assembly comprises a turbine (6301) and a worm (6302) for driving the turbine (6301) to rotate, the turbine (6301) and the pitching rotating shaft (620) are coaxially arranged and fixed at a second end of the pitching rotating shaft (620) so as to drive the turbine (6301) to rotate through the worm (6302), and then the blade clamp (100) is driven to rotate, so that the pitch angle of the blade (1) is adjusted.

2. The blade hoisting tool according to claim 1, wherein the number of the worms (6302) is two, and the worms are symmetrically arranged on two sides of the turbine (6301).

3. The blade lifting tool according to claim 1, characterized in that the blade lifting tool further comprises a lifting frame (200), the support frame (610) is provided with a pitch rotation shaft (650), the pitch rotation shaft (650) is rotatably mounted to the lower end of the lifting frame (200), and the rotation axis of the pitch rotation shaft (650) is arranged perpendicular to the rotation axis of the pitch rotation shaft (620) and parallel to the length direction of the blade fixture (100).

4. The blade hoisting tool according to claim 3, further comprising a pitch drive mechanism (640), wherein a first end of the pitch drive mechanism (640) is hinged to the hanger (200) and a second end of the pitch drive mechanism (640) is hinged to the support frame (610).

5. The blade lifting tool according to claim 4, characterized in that the hanger (200) comprises two vertical beams (230) extending downwards, the two vertical beams (230) being arranged at a distance, the support frame (610) being arranged between the two vertical beams (230), the pitch rotation axis (650) extending from both sides of the support frame (610) and being rotatably connected to the two vertical beams (230).

6. The blade hoisting tool according to claim 5, wherein the pitch rotation shaft (650) is a two-section rotation shaft section, coaxially arranged on both sides of the support frame (610).

7. The blade hoisting tool according to claim 5, wherein the pitch drive mechanism (640) is a telescopic cylinder, the pitch drive mechanism (640) is two, the support frame (610) comprises a support base (613) and two support plates (611), the two support plates (611) are arranged on the side surface of the support base (613) and located on both sides of the rotating shaft drive assembly, a piston rod (642) of the telescopic cylinder is connected to the support plates (611), and a cylinder body (641) of the telescopic cylinder is connected to the hanger (200).

8. The blade hoisting tool according to claim 7, wherein the first end of the support plate (611) is provided with a pitch drive pivot shaft (612), the free end of the piston rod (642) is pivoted to the pitch drive pivot shaft (612), and the free end of the cylinder block (641) is pivoted to the blade clamp (100).

9. The blade lifting tool according to any one of claims 1 to 8, wherein the blade clamp (100) comprises a main beam (120), the second end of the pitch rotation shaft (620) is provided with a spline, and the middle of the main beam (120) is provided with a spline groove matched with the spline.

10. The blade hoisting tool according to claim 9, wherein the blade clamp (100) further comprises blade clamping units (110, 130) disposed at two ends of the main beam (120), and the pitch rotating mechanism (600) is connected to the main beam (120) and can drive the main beam (120) to rotate around the pitch rotating shaft (620).

11. The blade hoisting tool according to claim 10, wherein the blade clamping unit (110, 130) comprises an upper clamping assembly (140), a lower clamping assembly (150) and a clamping opening adjusting unit (115), the clamping opening adjusting unit (115) comprises a first telescopic cylinder, and two ends of the clamping opening adjusting unit (115) are respectively connected between the upper clamping assembly (140) and the lower clamping assembly (150) and used for adjusting the size of a clamping opening formed by the upper clamping assembly (140) and the lower clamping assembly (150).

12. The blade hoisting tool according to claim 11, wherein the upper clamping assembly (140) comprises a pressing arm (111), an upper standing arm (112) and a first locking assembly (116), the upper standing arm (112) extends downwards from one end of the pressing arm (111), the lower clamping assembly (150) comprises a bearing arm (113) and a lower standing arm (114) extending upwards from one end of the bearing arm (113), and the lower standing arm (114) is connected with the upper standing arm (112) so that the upper clamping assembly (140) and the lower clamping assembly (150) form a space for clamping a blade; the first locking assembly (116) is for locking the upper arm (112) relative to the lower arm (114).

13. Blade hoisting tool according to claim 12, characterized in that the upper part of the upper standing arm (112) is provided with a pivot shaft (1121), the hold-down arm (111) is connected to the upper standing arm (112) through the pivot shaft (1121),

the blade holding unit (110) further comprises an angle adjusting unit (117) for driving the pressing arm (111) to rotate relative to the upper standing arm (112) to adjust the inclination angle of the pressing arm (111) relative to the upper standing arm (112),

the angle adjusting unit (117) comprises a second telescopic oil cylinder, a first end of the second telescopic oil cylinder is hinged with the lower part of the upper vertical arm (112) and can be telescopic, and a second end of the second telescopic oil cylinder is hinged with the end part of the pressing arm (111), so that the pressing arm (111) is driven to pivot around the pivot shaft (1121).

14. The blade hoisting tool according to claim 13, wherein the blade clamping unit (110) further comprises a second locking assembly (118) for locking the pressing arm (111) relative to the upper standing arm (112), the second locking assembly (118) comprising a stop for limiting retraction of the first end of the second telescopic cylinder.

15. The blade hoisting tool according to claim 14, wherein the stopper is a locking wedge (1181), the locking wedge (1181) has a locking position and an unlocking position, the locking wedge (1181) has a slope (1181a), in the locking position, the slope of the locking wedge (1181) abuts against a lower portion of the first end of the second telescopic cylinder in a direction in which the first end of the second telescopic cylinder retracts so as to limit the retraction of the first end of the second telescopic cylinder, and in the unlocking position, the locking wedge (1181) is disengaged from the first end of the second telescopic cylinder; or

The stopper portion includes:

a barrier (1185) mounted on the upper boom (112) and disposed on a telescopic path of the first end of the second telescopic cylinder; and

the eccentric wheel (1186) is mounted on the pressing arm (111) and can rotate to a locking position and an unlocking position relative to the pressing arm (111), in the locking position, the eccentric wheel (1186) abuts against a baffle (1185) so as to limit the extension and retraction of the first end of the second telescopic oil cylinder, and in the unlocking position, the eccentric wheel (1186) is separated from the baffle (1185) so as to enable the first end of the second telescopic oil cylinder to extend and retract.

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