CN111994787A

CN111994787A - Blade hoisting tool

Info

Publication number: CN111994787A
Application number: CN202010871114.9A
Authority: CN
Inventors: 沈星星; 张竹; 程伟; 黄可唯; 黄建伟; 邓艳
Original assignee: CHENGDU SHIWEI TECHNOLOGY CO LTD; Jiangsu Goldwind Science and Technology Co Ltd
Current assignee: CHENGDU SHIWEI TECHNOLOGY CO LTD; Jiangsu Goldwind Science and Technology Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-27

Abstract

The utility model provides a blade hoist and mount frock, blade hoist and mount frock includes pitch rotary mechanism and blade anchor clamps, pitch rotary mechanism includes braced frame, pitch rotation axis and rotation axis drive assembly, the pitch rotation axis rotatably sets up on braced frame, and the first end and the blade anchor clamps of pitch rotation axis are connected, the second end and the rotation axis drive assembly of pitch rotation axis are connected, rotation axis drive assembly includes the turbine and drives the rotatory worm of turbine, the turbine is held with the coaxial setting of pitch rotation axis and be fixed in the second of pitch rotation axis, it is rotatory to drive the turbine through the worm, and then it is rotatory to drive the blade anchor clamps, thereby adjust the pitch angle of blade, consequently, blade hoist and mount frock can the blade co-rotation of centre gripping, just also need not additionally to use the barring mechanism in blade.

Description

Blade hoisting tool

Technical Field

The utility model belongs to the technical field of wind power generation, especially, relate to a blade hoist and mount frock.

Background

With the increasing single-machine capacity of wind generating sets, the size of blades of the wind generating sets is gradually increased, for example, the length of the blades of offshore wind generating sets exceeds 90 meters, and the weight of the blades exceeds 35 tons.

The hub needs to be rotated by means of the barring structure in the traditional blade installation process, so that a variable pitch bearing of the hub can correspond to the position of a blade flange, along with the increase of the blade, the load required to be borne by the traditional barring structure is also larger and larger, and therefore the end cover structure (connected with the barring) of the generator deforms in the barring process, and normal operation of a unit is affected.

Because blade length is overlength, trefoil installation is because the restriction of installation ship, it has very big risk to stand up, for example in the installation of above-mentioned blade, the blade hoist and mount frock of use can take the blade to carry out the small-angle rotation, for example rotatory 30, consequently need the loop wheel machine to take blade hoist and mount frock barring to carry out the rotation of large angle, but this kind of mode has very big potential safety hazard, for example, the loop wheel machine takes blade hoist and mount frock barring in-process, the influence of lifting hook in-process acceleration is put down, probably lead to the lifting hook to collide with the blade, perhaps because the loop wheel machine maloperation produces extra pulling force and makes the blade slide out from the grip opening because the blade hoist frock produces extra pulling force to the blade.

The installation of first blade is accomplished at above-mentioned blade hoist and mount frock and under the condition that needs the centre gripping second blade, need exchange the position of the blade grip block of centre gripping mouth and apex grip block usually, and this installation complex operation is wasted time and energy.

Disclosure of Invention

The main invention of the present disclosure aims to provide a blade hoisting tool, which can clamp a blade to rotate together, and can realize large-angle rotation in the pitch direction, so that an additional turning mechanism is not needed in the blade installation process.

Aiming at the above purpose, the present disclosure provides the following technical solutions:

according to an aspect of the present disclosure, a blade hoisting tool is provided, the blade hoisting tool includes a pitching rotating mechanism and a blade clamp, the pitching rotating mechanism includes a supporting frame, a pitching rotating shaft and a rotating shaft driving component, the pitching rotating shaft is rotatably disposed on the supporting frame, a first end of the pitching rotating shaft is connected with the blade clamp, a second end of the pitching rotating shaft is connected with the rotating shaft driving component, the rotating shaft driving component includes a turbine and a driving worm of the turbine rotation, the turbine and the pitching rotating shaft are coaxially disposed and fixed at a second end of the pitching rotating shaft, so as to drive the turbine rotation through the worm, and further drive the blade clamp rotation, thereby adjusting a pitching angle of the blade.

Preferably, the number of the worms is two, and the worms are symmetrically arranged on two sides of the worm wheel.

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

Further, the blade hoisting tool further comprises a variable pitch driving mechanism, wherein the first end of the variable pitch driving mechanism is hinged to the hanging bracket, and the second end of the variable pitch driving mechanism is hinged to the supporting frame.

Preferably, the spreader comprises two downwardly extending vertical beams, the two vertical beams being spaced apart, the support frame being disposed between the two vertical beams, the pitch rotation axis extending from both sides of the support frame and being 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 at both sides of the supporting frame.

Preferably, the pitch control driving mechanism is a telescopic oil cylinder, the number of the pitch control driving mechanisms is two, the supporting frame comprises a supporting seat and two supporting plates, the two supporting plates are arranged on the side surface of the supporting seat and located on two sides of the rotating shaft driving assembly, a piston rod of the telescopic oil cylinder is connected to the supporting plates, and a cylinder body of the telescopic oil cylinder is connected to the hanger.

Furthermore, the variable-pitch driving mechanism comprises a cylinder body and a piston rod, the first end of the supporting plate is provided with a variable-pitch driving pivot shaft, the free end of the piston rod is pivoted on the variable-pitch driving pivot shaft, and the free end of the cylinder body is pivoted on 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 a middle portion of the main beam is provided with a spline groove matching the spline.

Further, the blade anchor clamps still including set up in the blade centre gripping unit at girder both ends, every single move rotary mechanism connect in the girder can drive the girder winds the every single move rotation axis rotates, blade centre gripping unit includes centre gripping subassembly, lower centre gripping subassembly and presss from both sides a mouthful regulating unit, it includes first flexible actuating mechanism to press from both sides a mouthful regulating unit, first flexible actuating mechanism is first flexible hydro-cylinder, it connects respectively to press from both sides a mouthful regulating unit's both ends go up the centre gripping subassembly with between the centre gripping subassembly down, be used for adjusting go up the centre gripping subassembly with the size of the centre gripping mouth that the centre gripping subassembly formed down.

Further preferably, the upper clamping assembly comprises a pressing arm, an upper vertical arm and an angle adjusting unit, the upper vertical arm extends downwards from one end of the pressing arm, a pivot shaft is arranged at the upper part of the upper vertical arm, the pressing arm is connected to the upper vertical arm through the pivot shaft, the angle adjusting unit comprises a second telescopic driving mechanism, the second telescopic driving mechanism is a second telescopic oil cylinder, the first end of the second telescopic oil cylinder is hinged to the lower part of the upper vertical arm and can be telescopic, and the second end of the second telescopic oil cylinder is hinged to the end part of the pressing arm so as to drive the pressing arm to pivot around the pivot shaft; and/or the lower clamping assembly comprises a bearing arm and a lower vertical arm extending upwards from one end of the bearing arm, and the lower vertical arm is connected with the upper vertical arm, so that the upper clamping assembly and the lower clamping assembly form a space for clamping the blade.

Another exemplary embodiment of this disclosure, blade hoist and mount frock still includes first locking Assembly for with the upper vertical arm is relative lower vertical arm locking, first locking Assembly includes: a first locking member mounted on one of the lower and upper vertical arms; a second locking member mounted on the other of the lower vertical arm and the upper vertical arm and opposed to the first locking member, having a locked position in which the second locking member is engaged with the first locking member to lock the relative position of the upper clamp assembly and the lower clamp assembly, and an unlocked position in which 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 connected to the second locking member for driving the second locking member 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 stand arm and extending in a direction in which the upper stand arm moves relative to the lower stand arm; the second locking member is a short rack mounted on the upper boom to be opposed to the long rack and movable in a direction perpendicular to a direction in which the upper boom moves relative to the lower boom by the drive of the first drive member, which is a telescopic cylinder, so that the short rack and the long rack are engaged with each other in the lock position.

Preferably, the blade hoisting tool further comprises a second locking assembly for locking the pressing arm relative to the upper vertical arm, the second locking assembly comprises a stopping part for limiting the retraction of the first end of the second telescopic cylinder, the stopping part is a locking wedge block, the locking wedge block has a locking position and an unlocking position, the locking wedge block has an inclined surface, in the locking position, the inclined surface of the locking wedge block abuts against the lower part of the first end of the second telescopic cylinder along the retraction direction of the first end of the second telescopic cylinder to limit the retraction of the first end of the second telescopic cylinder, and in the unlocking position, the locking wedge block is disengaged from the first end of the second telescopic cylinder; the second locking assembly further includes a second drive member mounted on the hold down arm for driving the locking wedge to move to at least one of the locked position and the unlocked position; the second locking assembly further comprises a support frame, the support frame is installed on the upper portion of the upper vertical arm, the locking wedge block is installed on the support frame and can move along the direction close to or far away from the first end of the second telescopic oil cylinder, a groove is formed in the support frame and extends along the telescopic stroke of the first end of the second telescopic oil cylinder to guide the motion track of the first end of the second telescopic oil cylinder, and after the first end of the second telescopic oil cylinder retracts, 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 limiting retraction of the first end of the second telescopic cylinder, the stopper including: a baffle mounted on the upper boom and disposed on a telescopic path of the first end of the second telescopic cylinder; the eccentric wheel is arranged on the pressing arm and can rotate to a locking position and an unlocking position relative to the pressing arm, the eccentric wheel abuts against the baffle plate at the locking position so as to limit the extension and contraction of the first end of the second telescopic oil cylinder, and the eccentric wheel is separated from the baffle plate at the unlocking position so as to enable the first end of the second telescopic oil cylinder to extend and contract; the eccentric wheel comprises a long diameter end and a short diameter end, the long diameter end rotates to the baffle plate and abuts against the baffle plate in the locking position, and the short diameter end rotates to the baffle plate and is separated from the baffle plate in the unlocking position; the second locking assembly further includes a third drive member mounted on the hold down arm for driving the eccentric to at least one of the locked and unlocked positions.

The utility model provides a blade hoist and mount frock has following beneficial effect: the pitching rotating mechanism of the blade hoisting tool comprises a pitching rotating shaft and a rotating shaft driving assembly, wherein two ends of the pitching rotating shaft are respectively connected with the blade clamp and the rotating shaft driving assembly so as to drive the turbine to rotate through the worm and further drive the blade clamp to rotate, and thus the pitching angle of the blade is adjusted.

Drawings

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

fig. 1 is a structural diagram of a blade hoisting tool according to an exemplary embodiment of the present disclosure.

Fig. 2 is an exploded view of the blade lifting tool in fig. 1.

Fig. 3 is an operational schematic diagram of the worm gear assembly of fig. 1.

Fig. 4 is a structural diagram of a blade lifting tool according to another exemplary embodiment of the present disclosure.

Fig. 5 is a partial exploded view of the blade lifting tool in fig. 4.

Fig. 6 is a structural diagram of a blade hoisting tool according to an exemplary embodiment of the present disclosure.

Fig. 7 is a using state diagram of the blade hoisting tool in fig. 6.

Fig. 8 shows an exploded view of the blade holding unit of fig. 1.

Fig. 9 shows a perspective view of the internal structure of the blade holding unit in fig. 8.

Fig. 10 shows an exploded view of the blade holding unit in fig. 8.

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

Figures 12, 13 and 14 show a schematic view of the process of the second locking assembly locking the hold down arm relative to the upper stand arm.

Fig. 15 is a structural view of a blade holding unit according to another embodiment.

FIG. 16 illustrates a schematic view of a blade clamp according to an exemplary embodiment of the present disclosure.

FIG. 17 illustrates a schematic view of the blade clamp of FIG. 16 in a state prior to being used for pitching a blade.

FIG. 18 illustrates a schematic view of the blade clamp of FIG. 16 after being used to pitch a blade.

Detailed Description

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 features in various embodiments of the present disclosure may be combined arbitrarily. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

An exemplary embodiment of the present disclosure provides a blade lifting tool, which includes a hanger 200, a blade clamp 100, a support frame 610, and a pitch rotation mechanism 600, wherein the pitch rotation mechanism 600 is connected to a lower end of the hanger 200, and the blade clamp 100 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, so as to perform pitch operation.

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 a first end of the pitch rotation shaft 620 is used to connect with the blade jig 100, and a second end of the pitch rotation shaft 620 is connected with the pitch driving mechanism to receive a rotational driving force provided by the pitch driving mechanism, so that the pitch rotation shaft 620 is driven to rotate, and finally the blade jig 100 is rotated.

The pitch driving mechanism may be a worm gear and worm assembly 630, the worm gear and worm assembly 630 may include a worm gear 6301 and a worm 6302 for driving the worm gear 6301 to rotate, and the worm 6301 is coaxially disposed with the pitch rotating shaft 620 and fixed on an outer circumference of the second end of the pitch rotating shaft 620, so as to drive the worm gear 6301 to rotate through the worm 6302, and further drive the blade clamp 100 to rotate, thereby adjusting 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 to the worm gear assembly 630 and the blade clamp 100, so as to drive the worm gear 6301 to rotate through the worm 6302, and further drive 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 according to an exemplary embodiment of the present disclosure. Fig. 2 is an exploded view of the blade lifting tool in fig. 1.

Referring to fig. 1 and 2, in the present embodiment, the supporting base 613 may be a structural form of the supporting frame 610, the supporting base 613 may be a hexahedral structure, and the supporting base 613 is provided with a first through hole extending along a front-rear direction of the supporting base 613 for the pitch rotating shaft 620 to pass through, for example, but not limited to, the first through hole may pass through the supporting base 613 along the front-rear direction. The front-rear direction of the support 613 defined in this embodiment may be parallel to the extending direction of the pitch rotation shaft 620, in other words, the front-rear direction of the support 613 is a direction perpendicular to the main beam 120 of the blade jig. In addition, the supporting seat 613 may further have a second through hole for the worm 6302 to pass through, and the second through hole may be perpendicular to the first through hole but not intersecting the first through hole.

Pitch rotation axis 620 may include a spline shaft section, a turbine shaft section, and an optical axis section disposed between the spline shaft section and the turbine shaft section, specifically, the spline shaft section may be located at a first end of pitch rotation axis 620, and the spline shaft section may be inserted on blade clamp 100 to be able to drive 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 assembly 630 is disposed on an outer circumference of the turbine shaft segment, for example, but not limited to, the turbine 6301 may be sleeved on the outer circumference of the pitch rotation shaft 620 and disposed coaxially with the pitch rotation shaft 620. The optical axis segment may be positioned at the middle of the pitch rotation shaft 620, and the optical axis segment may be rotatably coupled to the support frame 610 by a bearing. The worm 6302 can drive the turbine 6301 to rotate around the pitch rotation axis 620 through the linear motion, and further drive the pitch rotation axis 620 to rotate, so as to drive the blade clamp 100 to rotate together. For example, and without limitation, the pitch rotation range of blade grip 100 may be between +40 ° and-220 ° driven by pitch rotation axis 620.

In this embodiment, in order to improve the strength of the output load of the turbine-worm assembly 630, the number of the worms 6302 may be increased, for example, but not limited to, two worms 6302 may be symmetrically arranged on the outer periphery of the turbine 6301, and specifically, refer to fig. 3.

Fig. 4 is a structural diagram of a blade lifting tool according to another exemplary embodiment of the present disclosure. Fig. 5 is a partial exploded view of the blade lifting tool in fig. 4.

In the example shown in fig. 4 and 5, the blade clamp 100 is capable of pitch rotation relative to the pylon 200 about a pitch rotation axis 650 for pitch operations. As shown in fig. 4 and 5, the pitch rotating shaft 650 is fixedly disposed on the support frame 610 and extends in a horizontal direction, a shaft hole 231 is disposed at a lower end of the hanger 200, and the pitch rotating shaft 650 is mounted in the shaft hole 231 at the lower end of the hanger 200 through a bearing.

The blade hoisting tool according to the embodiment of the disclosure further includes a pitch driving mechanism 640, two ends of the pitch driving mechanism 640 are respectively connected to the hanger 200 and the support frame 610 to drive the support frame 610 to perform pitch rotation relative to the hanger 200 around the pitch rotation axis 650, and since the blade clamp 100 is connected to the support frame 610 through the pitch rotation axis 620, that is, the support frame 610 carries the blade clamp 100 to rotate around the pitch rotation axis 650 together, so that the pitch operation is performed.

Referring to fig. 4 and 5, support frame 610 includes a support base 613 and a support plate 611 extending from support base 613, and support plate 611 may be used to support one end of pitch drive mechanism 640. Pitch drive mechanism 640 may be provided in two, and thus, support plates 611 may be provided in a pair. The pair of support plates 611 may be disposed on two side surfaces of the support base 613, and on two sides of the worm gear assembly 630, and may be arranged 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 disposed on two sides of the pitch rotation axis 650, one end of the pitch drive mechanism 640 is disposed on the support plates 611, and the other end of the pitch drive mechanism 640 is connected to the hanger 200, so as to drive the blade clamp 100 to rotate around the pitch rotation axis 650, and the blade 1 may be driven to pitch within a wide range, for example, but not limited to, the pitch angle may be any value between-20 ° and +120 °. Preferably, the pitch angle can be any value between-7 ° and 90 °.

The pitch rotation axis 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 axis of rotation of pitch rotation shaft 650 is arranged perpendicular to the axis of rotation of 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 a support frame 610 may be disposed between the two vertical beams 230. The lower end of the vertical beam 230 is provided with a shaft hole 231, and the variable pitch rotating shaft 650 is arranged in the shaft hole 231 in a penetrating way through a bearing. The pitch rotating shaft 650 may be integrally formed as a shaft, and both ends are inserted into the shaft holes 231, respectively, after passing through the support frame 610. In order to avoid interference with the pitch rotation shaft 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, pitch rotation shaft 650 may comprise two shaft segments, each attached to a side surface of support frame 610 and arranged coaxially. Since pitch rotation shaft 650 does not have a section penetrating into support frame 610, so that interference does not occur even if it is disposed in the same plane as pitch rotation shaft 620, support frame 610 can be relatively compact in size.

Specifically, two rotating shaft segments may be disposed on two sides of the supporting seat 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 supporting seat 613 in the width direction, and the pitch rotating shaft 650 extends along the width direction of the supporting seat 613, and the two rotating shaft segments may be disposed coaxially.

Pitch drive mechanism 640 may be a telescoping cylinder, one end of which may be connected to support plate 611 and the other end of which may be connected to vertical beam 230. In the example shown in the drawings, the telescopic cylinder includes a cylinder body 641 and a piston rod 642, the piston rod 642 may be pivotally connected to the support plate 611, and the cylinder body 641 may be pivotally connected to the vertical beam 230. For example, the lower part of the side of the support plate 611 facing away from the pitch rotation axis 650 is provided with a pitch drive pivot shaft 612, the free end of the piston rod 642 is pivoted on the pitch drive pivot shaft 612, and the free end of the cylinder 641 is pivoted on the blade clamp 100.

In particular, a pivot hole is provided in a lower portion of the side of the support plate 611 facing away from the pitch rotation axis 650, into which pivot hole the pitch drive pivot shaft 612 can be passed, and a free end of the piston rod 642 can pivot on the pitch drive pivot shaft 612. The free end of the cylinder 641 may pivot on the upper portion of the vertical beam 230 to rotate the blade clamp 100 and pitch rotation mechanism 600 about the pitch rotation axis 650 by the extension and retraction of the piston rod 642 relative to the cylinder 641.

Fig. 6 is a structural diagram of a blade hoisting tool according to an exemplary embodiment of the present disclosure. Fig. 7 is a using state diagram of the blade hoisting tool in fig. 6.

Compare with blade hoist and mount frock in fig. 4, in this embodiment, braced frame 610 is still including the box structure that the one end side of keeping away from blade anchor clamps 100 set up, this box structure has the chamber that holds, hold and to hold at least one among automatically controlled cabinet 681, generator 682, the balancing weight, the battery, and the frequency conversion cabinet in the chamber, through set up above-mentioned automatically controlled cabinet 681 in holding the chamber, parts such as balancing weight, can provide the counter weight for whole blade hoist and mount frock, thereby the structure of blade hoist and mount frock has been simplified, the volume of blade hoist and mount frock has been reduced. In this embodiment, the blade hoisting tool further includes a counterweight adjusting mechanism 684 located below the front portion of the shell structure to adjust the position of the counterweight. Further, bottom sprag can be provided with in the bottom of box structure, and when marine use, this bottom sprag can increase the ground of box structure apart from operation platform's interval to can prevent that the sea water from entering this box structure, avoid automatically controlled cabinet 681 to meet the water and produce for the limit.

With continued reference to fig. 1-5, the blade clamp 100 includes a main beam 120, with a splined groove provided in the middle of the main beam 120, which is capable of mating with a splined shaft segment of the pitch rotation shaft 620. A vertical beam 230 (as shown in fig. 5) may be fixedly disposed behind the main beam 120, a shaft hole 231 for receiving the pitch rotating shaft 650 may be disposed at a lower end of the vertical beam 230, a driving mechanism connecting portion may be disposed at an upper end of the vertical beam 230, the driving mechanism connecting portion may be a through hole for passing a pin, and a free end of the cylinder block 641 may be connected to the vertical beam 230 through the pin, but not limited thereto.

Referring to fig. 1 to 7, the blade clamp 100 includes a main beam 120 and

blade clamping units

110 and 130 disposed at two ends of the main beam 120, and a pitch rotation mechanism is connected to the main beam 120 and can rotate the main beam 120 around a pitch rotation axis 620.

As shown, the blade clamping unit 110 and the blade clamping unit 130 are configured to clamp a tip portion and a root portion of a blade, respectively, and thus may also be referred to as a tip clamping mechanism and a root clamping mechanism, respectively. The blade holding unit 110 and the blade holding unit 130 have substantially the same structure, except that the size adjustment range of the holding opening is different. Therefore, in the following description, only the structure of the blade holding unit 110 will be described.

Referring to fig. 8, the

blade clamping unit

110, 130 includes an upper clamping assembly 140, a lower clamping assembly 150, and a nip adjusting unit 115, the nip adjusting unit 115 is connected between the upper clamping assembly 140 and the lower clamping assembly 150 for adjusting the size of the clamping nip formed by the upper clamping assembly 140 and the lower clamping assembly 150, and the nip adjusting unit 115 can adjust the size of the clamping nip formed by the upper clamping assembly 140 and the lower clamping assembly 150, thereby being suitable for clamping blades of different sizes.

Specifically, the blade clamping unit 110 may further include a first locking member 116 for locking the nip adjusting unit 115 after the nip adjusting unit 115 adjusts the size of the nip to an appropriate size, thereby preventing the upper and

lower clamping members

140 and 150 from moving relative to each other.

With continued reference to fig. 8, upper clamp assembly 140 includes a hold-down arm 111 and an upper upright arm 112 extending downwardly from one end of hold-down arm 111, with hold-down arm 111 being pivotable relative to upper upright arm 112. Specifically, referring to fig. 6, the pivoting end of the pressing arm 111 is pivoted to the upper standing arm 112, and when it is desired to load the blade, the free end of the pressing arm 111 is lifted up, and after the blade is loaded in place, the free end of the pressing arm 111 is rotated downward again to clamp the blade. The blade holding unit 110 according to the embodiment of the present disclosure may further include an angle adjusting unit 117 and a second locking assembly 118. The angle adjusting 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 clamp assembly 150 includes a support arm 113 and a lower standing arm 114 extending upward from one end of the support arm 113, and the lower standing arm 114 is connected to the upper standing arm 112, thereby forming a space (i.e., a clamping opening) for clamping the blade 1 with the lower clamp assembly through the upper clamp assembly 140. The nip adjusting unit 115 is connected between the upper standing arm 112 and the lower standing arm 114, and is used for driving 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, and thus adjust the size of the nip. A first locking assembly 116 is used to lock the upper upright arm 112 relative to the lower upright arm 114. A second locking assembly 118 is used to lock the hold down arm 111 relative to the upper stand arm 112.

According to the blade clamp 100 of the exemplary embodiment of the present disclosure, a clamping space (i.e., a clamping port) having a "C" shape or a "T" shape is formed by the upper and lower clamping members, the pressing arm 111 and the supporting arm 113 form two clamp legs for clamping opposite surfaces of the blade, and the upper and lower standing

arms

112 and 114 constitute a telescopic standing arm connected between the pressing arm 111 and the supporting arm 113. The clamping range of the blade is adjusted to a large extent by relatively moving the upper vertical arm 112 and the lower vertical arm by the clamping port adjusting unit 115, and the pressing arm 111 is driven to rotate relative to the upper vertical arm 112 by the angle adjusting unit 117 to further adjust the magnitude of the clamping force for clamping the blade. Specifically, the pressing arm 111 may be rotated counterclockwise to open to increase the entry space of the blade, or may be rotated clockwise to press down to apply the pressing force to the blade. In addition, the height positions of the upper standing arm 112 and the lower standing arm 114 can be locked through the first locking assembly 116, and the rotation angle of the pressing arm 111 relative to the upper standing arm 112 can be locked through the second locking assembly 118, so that the clamping state between the blade clamp 100 and the blade is maintained, the blade clamp is prevented from loosening after clamping the blade, and the clamping reliability is ensured.

Referring to fig. 8 to 10, in an embodiment, the upper and lower standing

arms

112 and 114 may be a cylindrical hollow structure, i.e., a hollow cylinder, and formed in a nested structure with each other, as shown, may be formed in a rectangular hollow structure. Specifically, the lower part of the upper standing arm 112 is nested inside the upper part of the lower standing arm 114, and can slide relatively along the height direction (Y direction shown in fig. 9) under the pushing of the nip adjusting unit 115, so as to adjust the height/length of the telescopic standing arm composed of the upper standing arm 112 and the lower standing arm 114, thereby improving the use versatility of the blade hoisting tool. For example, when the number of portions in which the upper and

lower arms

112 and 114 are fitted to each other is increased, that is, the height/length of the telescopic arm becomes smaller, the distance between the pressing arm 111 and the holder arm 113 becomes smaller, and the opening degree of the nip becomes smaller; conversely, when the portion where the upper and lower stand

arms

112 and 114 are nested with each other is reduced, the overall height/length of the telescopic stand arm becomes large, the distance between the pressing arm 111 and the retainer arm 113 becomes large, and the degree of opening of the nip becomes large. Alternatively, the upper and lower stand

arms

112 and 114 may be formed of a stainless steel plate to improve strength and prevent corrosion, but the present disclosure is not limited thereto. The present embodiment does not limit the connection manner and the specific shape of the upper standing arm 112 and the lower standing arm 114, and the upper standing arm 112 and the lower standing arm 114 may be moved up and down in the vertical direction (Y direction) to adjust the distance between the pressing arm 111 and the holding arm 113.

The nip adjusting unit 115 may include a pitch extension driving mechanism provided inside the lower stand arm 114. The distance telescopic driving mechanism can adopt a driving mechanism with large thrust and large stroke to adjust the clamping range of the blade 1 in a large range, namely, adjust the size of a clamping opening. The pitch telescoping drive mechanism may be a telescoping cylinder, for example, an automatically controlled hydraulic cylinder. One end of the telescopic 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 cylinder may be relatively large, and the upper vertical arm 112 is driven to move relative to the lower vertical arm 114 by the linear telescopic motion of the telescopic cylinder, so as to adjust the distance between the pressing arm 111 and the supporting arm 113, but the present disclosure is not limited thereto, and the nip adjusting unit 115 may also be another driving element that can drive the upper vertical arm 112 and the lower vertical arm 114 to move relative to each other, so as to adjust the distance between the pressing arm 111 and the supporting arm 113, and realize the linear telescopic driving, for example, an air cylinder, an electric screw rod, or a bolt with a nut.

The opening and closing degree of the nip can be adjusted by the nip adjusting unit 115 in cooperation with the lifting of the upper standing arm 112 relative to the lower standing 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 to more firmly clamp the blade 1, a backup first locking assembly 116 is provided on the basis of the elevating function, as shown in fig. 8 to 11, the first locking assembly 116 includes a first locking piece 1161, a second locking piece 1162 and a first driving member 1163.

Wherein the first locking member 1161 is mounted on one of the lower and

upper stand arms

114 and 112. The second locking member 1162 is mounted on the other one of the lower and upper

vertical arms

114 and 112 to be horizontally opposed to the first locking member 1161, and has a locking position and an unlocking position. In the locked position, the second locking member 1162 is engaged 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 unlocked position, the second lock 1162 is disengaged from the first lock 1161, and the upper stand arm 112 can move relative to the lower stand arm 114. The first drive member 1163 may be a telescoping drive member, such as a hydraulic ram, air cylinder, or lead screw. In the example shown in the drawings, the first driving member 1163 is a cylinder or an air cylinder, a cylinder portion of the first driving member 1163 is installed at a lower portion of the upper upright arm 112, and a piston rod of the first driving member 1163 is connected to the second locking member 1162 for driving the second locking member 1162 to move to at least one of the locking position and the unlocking position.

In the present embodiment, the first locking member 1161 is a long rack, is mounted on the lower stand arm 114, and extends in the direction in which the upper stand arm 112 moves relative to the lower stand arm 114 (Y direction shown in fig. 11). The second locking piece 1162 is a short rack, is installed to be opposed to the long rack, and is movable in a direction (X direction shown in fig. 11) perpendicular to a direction in which the upper standing arm 112 moves relative to the lower standing arm 114 by the driving of the first driving member 1163, so that the short rack and the long rack are engaged with each other when in the locking position. In this embodiment, stepless locking between the upper standing arm 112 and the lower standing arm 114 can be achieved by adopting the engagement of the long rack and the short rack. The length of the long rack may match the telescopic stroke of first drive member 1163, or the relative movement distance between upper clamp assembly 140 and lower clamp assembly 150. The length of the short rack may be smaller than that of the long rack, and the specific length is not limited as long as it has strength capable of locking the upper and lower standing

arms

112 and 114 to each other.

Here, the first driving member 1163 may be a telescopic cylinder installed on the upper standing arm 112, and the short rack is disposed at a first end (i.e., an extended end of the piston rod) of the telescopic cylinder, but the present disclosure is not limited thereto, and the first driving member 1163 may also be other driving elements capable of driving the second locking member 1162 to move in a direction to approach or move away from the first locking member 1161.

In fig. 11, the first locking piece 1161 is shown 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 may be interchanged as necessary.

In the present embodiment, the relative position between the upper standing arm 112 and the lower standing arm 114 is locked by the engagement of the long rack and the short rack with each other, but the present disclosure is not limited thereto, and the first locking member 1161 and the second locking member 1162 may also adopt other locking structures known in the art, for example, a locking hole is engaged with a locking pin, etc., as long as the locking or releasing of the upper standing arm 112 and the lower standing arm 114 can be achieved by the engagement of the first locking member 1161 and the second locking member 1162 with each other.

In the above, the upper vertical arm 112 is moved relative to the lower vertical arm 114 by the nip adjusting unit 115, and the size of the nip is adjusted in a wide range in the vertical direction.

To further adjust the tightness of the clamping blade 1, the pressing arm 111 may be driven to rotate with respect to the standing arm 112 by the angle adjusting unit 117 to adjust the open and close state of the clamping opening of the blade 1.

Referring to fig. 8 to 10, the blade holding 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 adjusting unit 117 is used to adjust the pivoting angle of the pressing arm 111 with respect to the upper standing arm 112 to adjust the inclination angle of the pressing arm 111 with respect to the upper standing arm 112. The second locking assembly 118 is used to lock the pressing arm 111 with respect to the standing arm 112, so that the safety of the blade holding unit 110 may be improved.

Specifically, the upper portion of the upper standing arm 112 is provided with a pivot shaft 1121, and the pressing arm 111 is connected to the upper standing arm 112 through the pivot shaft 1121. The angle adjusting unit 117 may include a second telescopic driving mechanism, which may be a second telescopic cylinder, a first end of which is hinged to a lower portion of the upper standing arm 112, and a second end of which is hinged to an end of the pressing arm 111, so as to drive the pressing arm 111 to pivot about the pivot shaft 1121 relative to the upper standing arm 112, and adjust an inclination angle of the pressing arm 111 relative to the upper standing arm 112, so as to drive the pressing arm 111 to rotate relative to the upper standing arm 112 through the angle adjusting unit 117, so as to further adjust the magnitude of the clamping force for clamping the blade.

Specifically, the upper portion of the upper standing arm 112 is provided with a pivot shaft 1121 (shown in fig. 9 and 10), and the pressing arm 111 is connected to the upper standing arm 112 through the pivot shaft 1121. A first end of the second telescopic cylinder may be hinged to a lower portion of the upper standing arm 112, and a second end of the second telescopic cylinder may be hinged to an end of the pressing arm 111, thereby driving the pressing arm 111 to pivot about the pivot shaft 1121 with respect to the upper standing arm 112.

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 and also can adopt different structural designs, namely one of the second telescopic oil cylinder adopts a large-thrust large-stroke design, and the other one adopts a high-precision small-stroke design, so as to meet the control requirements on different precisions and strokes. In addition, the angle adjusting unit 117 may be other driving elements capable of driving the pressing arm 111 to rotate around the pivot shaft 1121 relative to the upper standing arm 112, such as an air cylinder, an electric screw, a bolt with a nut, or the like, in addition to the hydraulic cylinder.

A mounting plate 1122 may be connected to an upper end of the upper stand arm 112, the mounting plate 1122 extending laterally with respect to the upper end of the upper stand arm 112, and the pivot shaft 1121 may be mounted at an end of the mounting plate 1122 so as to be spaced apart from an upper end of the angle adjusting unit 117. The position where the pressing arm 111 is connected to the pivot shaft 1121 is spaced 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 rotation support shaft, so that the pressing arm 111 can pivot around the pivot shaft 1121 under the driving of the angle adjusting unit 117, thereby adjusting the inclination angle of the pressing arm 111 and accordingly adjusting the clamping force on the blade.

After the angle adjusting unit 117 drives the pressing arm 111 to rotate to a desired angle with respect to the standing arm 112, the rotational positions of the pressing arm 111 and the standing arm 112 may be locked by the second locking assembly 118, thereby maintaining the clamped state between the blade clamp and the blade 1.

Specifically, the second locking assembly 118 may include a stopper for restricting the first end of the second telescopic cylinder from being retracted, thereby preventing the pressing arm 111 from being pivoted upward to be opened in a state of clamping the vane 1, resulting in the falling-off of the vane 1.

Referring to fig. 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, and when the locking position is reached, the locking wedge 1181 abuts against the first end of the second telescopic cylinder to limit the retraction of the second telescopic cylinder; in the unlocked position, locking wedge 1181 disengages from the first end of the second telescopic cylinder, thereby releasing the first end of the second telescopic cylinder so that it can retract.

To enable the locking wedge 1181 to be switched between its locked and unlocked positions, the second locking assembly 118 may further include a second drive member 1182 and a support bracket 1183, and the second drive member 1182 may be a telescopic cylinder to push the locking wedge 1181 to move between the locked and unlocked positions. The cylinder of the second drive member 1182 is mounted on a support bracket 1183, and the piston rod of the second drive member 1182 is connected to the locking wedge 1181 for driving the locking wedge 1181 to move to at least one of its locked and unlocked positions.

The second locking assembly 118 may also include a support bracket 1183. A support 1183 is installed at the upper portion of the upper arm 112, and a locking wedge 1181 is installed on the support 1183 and can move in a direction approaching to or departing from the first end of the second telescopic cylinder. A groove 1184 may be formed on the supporting frame 1183, the groove 1184 extends along the telescopic stroke of the first end of the second telescopic cylinder to guide the movement track of the first end of the second telescopic cylinder, and after the first end of the second telescopic cylinder retracts, the bottom of the groove 1184 supports the first end.

Alternatively, the locking wedge 1181 may have a slope 1181a, and when 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. Through the inclined plane design, when the locking wedge 1181 is pressed by reverse acting force, a friction angle self-locking state is formed due to inclined plane support with an inclined angle, so that after the blade is clamped in place and the second driving member 1182 pushes the locking wedge 1181 to a locking position, the second driving member 1182 can lock the telescopic state of the angle adjusting unit 117 without providing thrust, and a rotating angle between the pressing arm 111 and the upper standing arm 112 is kept, so that the blade is safely clamped without risk.

Fig. 12 to 14 show a process in which the angle adjustment unit 117 drives the pressing arm 111 to rotate relative to the standing arm 112 and is locked by the locking wedge 1181. As shown in fig. 12, the pressing arm 111 is in a state of being rotated outward with respect to the upper standing arm 112, and at this time, the first end of the second telescopic cylinder is in a retracted state; as shown in fig. 13, the first end of the second telescopic cylinder extends out and moves upwards along the groove 1184 of the supporting frame 1183, so as to drive the pressing arm 111 to rotate downwards relative to the upper standing arm 112; as shown in fig. 14, after the pressing arm 111 is rotated to a position relative to the upper standing arm 112 to form a clamping opening to clamp the blade 1, the second driving member 1182 pushes the locking wedge 1181 to move leftward to a locking position, that is, the locking wedge 1181 is embedded between the first end of the second telescopic cylinder and the support frame 1183, and the inclined surface of the locking wedge 1181 abuts against the lower portion of the first end of the second telescopic cylinder, so as to limit the retraction of the first end of the second telescopic cylinder. Meanwhile, if the blade is mounted, the second driving member 1182 drives the locking wedge 1181 to move rightwards to the unlocking position, at this time, the first end of the second telescopic cylinder can be freely telescopic, so that the clamping opening is loosened, the blade can be released, and the blade can be safely detached.

The end of the piston rod of the second telescopic cylinder may be provided with a projection to enable the end of the piston rod to interfere with the locking wedge 1181 when the locking wedge 1181 is located between the first end of the telescopic cylinder of the pitch telescopic drive mechanism and the support shelf 1183, thereby preventing retraction of the piston rod.

The present disclosure is not so limited and in another embodiment, as shown in fig. 15, the stop may include a stop 1185 and an eccentric 1186. A barrier 1185 is mounted on the upper vertical arm 112 and is disposed on the telescopic path of the piston rod of the second telescopic cylinder, for example, on the inner side surface of the upper vertical arm 112. The eccentric wheel 1186 is mounted at the end of the piston rod of the second telescopic cylinder and can rotate to a locking position and an unlocking position, and in the locking position of the eccentric wheel 1186, the eccentric wheel 1186 abuts against the baffle 1185, so that the piston rod of the second telescopic cylinder is limited to stretch; in the unlocked position of the eccentric wheel 1186, the eccentric wheel 1186 is disengaged from the baffle 1185, so that the first end of the second telescopic cylinder can be telescopic. The eccentric wheel 1186 may be a disk, and includes a long diameter end and a short diameter end, and a predetermined gap is provided between the baffle 1185 and the piston rod of the second telescopic cylinder, and the predetermined gap is greater than the end diameter of the eccentric wheel 1186 and smaller than the long diameter of the eccentric wheel 1186. In the locking position, the long diameter end rotates to the position of the baffle 1185 and abuts against the baffle 1185, the piston rod of the second telescopic cylinder is prevented from retracting, in the unlocking position, the short diameter end rotates to the position of the baffle 1185 and is separated from the baffle 1185, and the piston rod can freely stretch and retract to pass through the baffle 1185.

Likewise, to allow the eccentric 1186 to be switched between its locked and unlocked positions, the second locking assembly 118 may further include a third drive member 1187, which may be a telescopic drive member, such as a hydraulic ram, an air cylinder, or a lead screw. In the example shown in the figures, the third drive member 1187 may be a telescopic cylinder, the cylinder of the third drive member 1187 may be mounted on the hold-down arm 111, and the piston rod of the third drive member 1187 is hinged to the eccentric 1186 for driving the eccentric 1186 to rotate between the locked and unlocked positions.

Specific structures of the nip adjusting unit 115, the angle adjusting unit 117, the first locking member 116, and the second locking member 118 for adjusting and locking the opening and closing degree of the nip have been described above with reference to the drawings.

Further, the upper clamping assembly 140 and the lower clamping assembly 150 in this embodiment are respectively provided with an upper limiting block 1142 and a lower limiting block 1141 for checking after the blade is mounted in place, so that the blade is mounted and attached in place, one end of the upper limiting block 1142 may be fixedly connected to the upper standing arm 112, and the other end of the upper limiting block 1142 may be provided with a flexible gasket to flexibly contact with the surface of the blade, so as to prevent the blade from being scratched. One end of the lower limiting block 1141 may be fixedly connected to the lower standing arm 114, and the other end of the lower limiting block 1141 may also be provided with a flexible gasket. Preferably, the upper limit block 1142 may be disposed at a corner of the upper clamp assembly 140 formed by the upper standing arm 112 and the pressing arm 111, and the lower limit block 1141 may be disposed at a corner of the lower clamp assembly 150 formed by the lower standing arm 114 and the supporting arm 113.

FIG. 16 illustrates a schematic view of a blade clamp according to an exemplary embodiment of the present disclosure. FIG. 17 illustrates a schematic view of the blade clamp of FIG. 16 in a state prior to being used for pitching a blade. FIG. 18 illustrates a schematic view of the blade clamp of FIG. 16 after being used to pitch a blade.

With reference to fig. 16 to 18, the blade clamp 100 may further comprise a pitch drive member 141 driving the

blade clamping units

110 and 130 to rotate with respect to the main beam 120; a rail 142 formed on one of the

blade clamping units

110 and 130 and the girder 120; and a rail groove 143 formed on the other one of the

blade clamping units

110 and 130 and the girder 120 and movable with respect to the rail 142.

According to the blade clamp disclosed by the exemplary embodiment of the disclosure, the blade 1 can be subjected to small-range pitch variation in the assembling process and the blade hoisting process of the wind generating set, so that the blade 1 is aligned with a hub and accurately connected to the hub, and in the pitch variation process, the

blade clamping units

110 and 130 can be helped to stably rotate relative to the main beam 120 through the matching of the guide rail 142 and the rail groove 143, so that the safety and stability of the blade clamp 100 with the blade 1 in the pitch variation process are ensured. For example, but not limited to, the blade hoisting tool provided by the embodiment can change the pitch within the angle range of-10 ° - +10 °.

Specifically, the pitch driving member 141 is a linear telescopic driving mechanism, one end of the pitch driving member 141 is hinged to the lower portion of the lower standing arm 114, and the other end is hinged to the end of the main beam 120, and the

blade clamping units

110 and 130 are driven to rotate relative to the main beam 120 through the linear telescopic driving of the pitch driving member 141. The linear telescopic driving mechanism is a hydraulic cylinder, the cylinder body of which 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. The main beam 120 has a receiving space at both ends thereof for receiving a hydraulic cylinder, the end of a piston rod of the hydraulic cylinder is connected to the lower upright arm 114 through a connecting column perpendicular to the lower upright arm 114, and an opening groove 146 for preventing the connecting column from interfering with the pitch drive member 141 is formed on the lower portion of both ends of the main beam 120. The opening groove 146 is an opening extending in the telescoping direction of the pitch drive member 141. A guide rail 142 is also formed on the other side surface of the lower stand arm 114 opposite to the side surface.

Referring to fig. 8 to 10 and 15, each of the upper clamping assembly 140 and the lower clamping assembly 150 may include a conformal pressing member 119 and a pressing member driving unit 1131 for pushing the conformal pressing member 119 to move along the extending direction of the pressing arm 111 or the supporting arm 113, and the pressing member driving unit 1131 may include a cylinder and a piston rod, specifically, a free end of the piston rod may be hinged to the conformal pressing member 119, and a free end of the cylinder may be hinged to the pressing arm 111 or the supporting arm 113, so as to drive the conformal pressing member 119 to move by the expansion and contraction of the piston rod relative to the cylinder, so that the conformal pressing member 119 is located at a position closely attached to the vane, that is, by adjusting the attachment degree of the vane and the conformal pressing member 119, the vane is clamped more stably, thereby improving the safety during the vane installation process. The extending and retracting direction of the pressing member driving unit 1131 is parallel to the extending direction of the pressing arm 111 or the holding 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 compression member 119 may be formed of a member whose shape or angle is adjusted according to the action of an external force so as to be conformable to the surface of the blade 1 along with the size and airfoil shape of the blade 1 when the blade 1 is clamped. The follower compression element 119 in the upper clamp assembly and the follower compression element 119 in the lower clamp assembly are similar in construction and face each other. Hereinafter, the following pressing member 119 in the above clamping assembly is taken as an example, and the structure and the connection relationship with other components will be described in detail.

The follower link 119 is rotatable about a first axis 1191 and a second axis 1192, the first axis 1191 extending along the length of the blade and the second axis 1192 extending along the chord of the blade. The chord length direction of the blade 1 is perpendicular to the length direction of the blade 1, and may be the leading edge to trailing edge direction of the blade. In other words, the chordwise direction of the blade coincides with the extending direction of the pressing arm 111.

Follower clamp 119 of the upper clamp assembly may include a deflection support 1193 and a clamp block 1194. One side of the deflection support 1193 is rotatably connected to the pressing arm 111 via a first deflection shaft 1191; the clamping block 1194 is rotatably connected with the other side of the deflection support 1193 through a second deflection shaft 1192, so that the clamping block 1194 and the blade 1 are ensured to be fitted in the transverse direction and the longitudinal direction in the process of clamping the blade by the clamping block 1194, and the different profile changes of the blade can be self-adapted along with the shape pressing piece 119.

The specific construction of the compliant clamp 119 of the lower clamp assembly is the same as the compliant clamp 119 of the upper clamp assembly, except that the deflection support 1193 of the compliant clamp 119 of the lower clamp assembly is rotatably connected to the bolster arm 113 and the clamp blocks 1194 of the compliant clamp 119 of the upper and lower clamp assemblies face each other.

Optionally, the conformal compaction member 119 can further include a yaw frame 1195 and a displacement screw 1196. The yaw frame 1195 is connected to the displacement screw 1196 and is capable of moving back and forth (left and right directions in fig. 4 and 5) in the chord length direction (X direction shown in fig. 4 and 5) of the blade 1 by the urging of the displacement screw 1196, thereby adjusting the position of the follower pressing member 119 in the extending direction of the pressing arm 111. The first yaw axis 1191 may be mounted on a yaw frame 1195. After confirming the blade shape each time of installation, the displacement screw 1196 is manually adjusted through the ground, so that the radial deviation caused by the gravity centers of different blade shapes can be adapted.

Optionally, the surface of the contact portion of the clamp block 1194 with the blade 1 may be paved with rubber layer, nylon block, etc. to prevent damage to the blade when the clamping process is aggregated and collided with the blade, increase the damping capacity and reduce the wear to the blade.

The blade hoisting tool provided by the disclosure does not need to use an additional turning tool, can avoid risks brought when the blade is installed by using the turning tool and a horizontal blade hoisting tool under the condition that the blade is larger and larger, reduces the development cost of the blade hoisting tool, and is simple in installation process and few in interface.

The blade hoisting tool is provided with independent pitch rotation and pitch rotation functions, so that the function that the blade hoisting tool drives the blade 1 to rotate in the air in a pitching mode can be realized, and the function that the blade hoisting tool drives the blade 1 to rotate in the air in a pitch mode can also be realized. In addition, the blade hoisting tool has a large pitching rotation angle, the angle range is from +40 degrees to-220 degrees, the blade hoisting tool also has a large pitching rotation angle range, the angle range can be from-10 degrees to +10 degrees, and the problems and risks brought when the blade is installed by the conventional blade hoisting tool adjusted within a small angle range (30 degrees) can be solved. Besides, the blade hoisting tool provided by the disclosure is provided with the wind catching system, so that the problem of high installation tool cost caused by the fact that the wind catching system needs to be additionally arranged no matter the current horizontal blade hoisting tool or the 30-degree inclined blade hoisting tool is provided with the wind catching system can be solved, and the blade can be kept in a stable state all the time when being lifted and butted in the air without additionally and independently purchasing or additionally arranging the wind catching system on a crane. The blade hoisting tool has a function of adjusting the gravity center position in real time, and when the blade hoisting tool drives the blade to perform pitching rotation and pitching rotation in the air, the integral gravity center of the blade and the blade hoisting tool can be changed, and an operator can adjust the top hoisting point in real time through the operating handle to balance the whole hoisting tool and the blade. The moving function of the upper clamping assembly 140 of the blade hoisting tool can be used as an emergency release system function of the blade hoisting tool. Under normal conditions, the upper clamping assembly 140 clamps the blade through the pressing arm 111, and when the blade is installed and the pressing arm 111 cannot be opened and the blade hoisting tool cannot be withdrawn from the blade, the angle adjusting unit 117 can be moved upwards, so that the blade hoisting tool can be withdrawn from the blade when enough clearance is left between the upper clamping assembly 140 and the blade.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to 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 explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims

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.