CN111994776B - Pitching rotary mechanism and blade hoisting tool - Google Patents

Abstract

The utility model provides a every single move rotary mechanism and blade hoist and mount frock, every single move rotary mechanism includes braced frame and drive unit, drive unit is including rotationally setting up the ring gear on braced frame, be located the inboard driving gear of ring gear and arrange the driven gear between driving gear periphery and the inner periphery of ring gear, driven gear can mesh with ring gear and driving gear respectively, in order to give the ring gear with the rotation driving force transmission of driving gear, the ring gear is used for fixed connection to blade anchor clamps, with it is rotatory along with the ring gear to drive the blade anchor clamps, under the drive of driving gear, driven gear rotates and gives the ring gear with the rotation driving force transmission of driving gear, the ring gear will drive blade anchor clamps together rotate to the pitch bearing alignment with wheel hub, and need not to use the jigger mechanism in the blade installation to carry out jigger operation to wheel hub additionally.

Description

Pitching rotary mechanism and blade hoisting tool

Technical Field

The disclosure belongs to the technical field of wind power generation, and particularly relates to a pitching rotation mechanism and a blade hoisting tool with the pitching rotation mechanism.

Background

With the continuous increase of the single-machine capacity of the wind generating set, the blade size of the wind generating set is gradually increased, for example, the length of the blade of the offshore wind generating set is over 90 meters, the weight of the blade is over 35 tons, and the aerial operation of the blade on the hub is more and more difficult due to the problem of the weight of the blade.

The traditional blade installation process needs to rotate the hub by means of the jigger structure, so that the variable pitch bearing of the hub can correspond to the position of the blade flange, and along with the increase of the blade, the load required to be born by the traditional jigger structure is also larger and larger, so that the end cover structure (connected with the jigger) of the generator is deformed in the jigger process, and the normal operation of the unit is influenced.

Because blade length overlength, three leaf installation is because the restriction of installation ship, stands up and has very big risk, for example in the installation of above-mentioned blade, and the blade hoist frock of use can take the blade to carry out the rotation of low-angle, for example rotatory 30, consequently need the loop wheel machine to take blade hoist frock jigger to carry out the rotation of wide-angle, but this kind of mode has very big potential safety hazard, for example the loop wheel machine takes blade hoist frock jigger in-process, the influence of lifting hook acceleration in the process of lowering down, probably leads to the lifting hook to collide with the blade, perhaps because the loop wheel machine maloperation produces extra pulling force and makes blade hoist frock produce extra pulling force to the blade and make blade slip out from the centre gripping mouth.

Under the condition that the first blade is installed and the second blade is required to be clamped by the blade hoisting tool, the positions of the blade clamping block and the blade tip clamping block of the clamping opening are required to be interchanged generally, and the installation process is complex in operation and time-consuming and labor-consuming.

Disclosure of Invention

It is an object of one of the primary inventions of the present disclosure to provide a pitch rotation mechanism to be able to clamp the blades for rotation together without the need for additional use of a jigger mechanism during blade mounting.

Aiming at the aim of the invention, the present disclosure provides the following technical scheme:

in one aspect of the present disclosure, there is provided a pitch rotation mechanism including a support frame and a driving unit including a gear ring rotatably provided on the support frame, a driving gear inside the gear ring, and a driven gear arranged at an outer periphery of the driving gear, the driven gear being capable of meshing with the gear ring and the driving gear, respectively, to transmit a rotational driving force of the driving gear to the gear ring, the gear ring being for fixed connection to a blade jig to drive the blade jig to rotate with the gear ring.

In an exemplary embodiment of the present disclosure, the driven gears are a plurality of, and the driven gears are equiangularly spaced at the outer circumference of the driving gear.

Optionally, a plurality of fastener mounting holes are formed in the gear ring, so that the gear ring can be fixedly connected with the blade clamp through fasteners.

Further, a flange is formed to protrude outward from a side of the ring gear facing the blade jig, and the plurality of fastener mounting holes are formed on the flange.

According to another exemplary embodiment of the present disclosure, a counterweight frame structure is disposed at one end side of the support frame, which is far away from the driving unit, and at least one of an electric control cabinet, a storage battery, a frequency conversion cabinet and a counterweight is disposed on the counterweight frame structure.

Further, the number of the driven gears is 2-6, and the driven gears are symmetrically arranged around the circumference of the driving gear.

According to another aspect of the disclosure, a blade lifting tool is provided, the blade lifting tool comprises a pitching rotating mechanism and a blade clamp, the blade clamp comprises a main beam and blade clamping units arranged at two ends of the main beam, the pitching rotating mechanism is connected to the main beam and can drive the main beam to rotate along with a gear ring, the blade clamping units comprise an upper clamping assembly, a lower clamping assembly and a clamping opening adjusting unit, and the clamping opening adjusting unit is connected between the upper clamping assembly and the lower clamping assembly and is used for adjusting the size of a clamping opening formed by the upper clamping assembly and the lower clamping assembly.

Further, 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 with the lower part of the upper vertical arm and can stretch out and draw back, and the second end of the second telescopic oil cylinder is hinged with 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, wherein 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.

Preferably, the blade hoisting tool further comprises a first locking assembly for locking the upper standing arm relative to the lower standing arm, the first locking assembly comprising: a first locking member mounted on one of the lower standing arm and the upper standing arm; a second locking member mounted on the other of the lower and upper riser arms and opposite the first locking member, having a locked position in which the second locking member engages the first locking member to lock the relative positions of the upper and lower clamp assemblies, and an unlocked position in which the second locking member disengages the first locking member so that the upper riser arm is movable relative to the lower riser arm; and a first driving member connected with the second locking piece for driving the second locking piece to move to at least one of the locking position and the unlocking position.

In another exemplary embodiment of the present disclosure, the first locking member is a long rack installed on the lower standing arm and extending in a direction in which the upper standing arm moves relative to the lower standing arm; the second locking piece is a short rack, is installed on the upper vertical arm and is opposite to the long rack, and can move along the direction perpendicular to the moving direction of the upper vertical arm relative to the lower vertical arm under the driving of the first driving component, so that the short rack and the long rack are meshed with each other at the locking position, the first driving component is a telescopic oil cylinder, and the short rack is arranged at the first end of the telescopic oil cylinder.

Preferably, the blade hoisting tool further comprises a second locking assembly for locking the hold-down arm relative to the upper standing arm, the second locking assembly comprising: a stopper for restricting retraction of the first end of the second telescopic cylinder, the stopper being a locking wedge having a locking position in which the inclined surface of the locking wedge 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 is retracted, and an unlocking position in which the locking wedge 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 into at least one of the locked and unlocked positions; the second locking assembly further comprises a supporting frame, the supporting frame is mounted on the upper portion of the upper standing arm, the locking wedge is mounted on the supporting frame and can move along the direction close to or far away from the first end of the second telescopic cylinder, a groove is formed in the supporting frame and 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 is retracted, the bottom of the groove supports the first end.

Further, the second locking assembly includes: a stopper for limiting retraction of the first end of the second telescopic cylinder, the stopper comprising: a baffle plate mounted on the upper standing arm and arranged on a telescopic path of the first end of the second telescopic cylinder; and an eccentric wheel mounted on the hold-down arm and rotatable relative to the hold-down arm to a locked position in which the eccentric wheel abuts against the baffle plate to thereby limit telescoping of the first end of the second telescoping cylinder, and an unlocked position in which the eccentric wheel is disengaged from the baffle plate so that the first end of the second telescoping cylinder can telescope; the eccentric wheel comprises a long-diameter end and a short-diameter end, in the locking position, the long-diameter end rotates to the baffle plate and abuts against the baffle plate, and in the unlocking position, the short-diameter end rotates to the baffle plate and is separated from the baffle plate; 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 pitching rotating mechanism and the blade hoisting tool provided by the disclosure have the following beneficial effects: under the drive of the driving gear, the driven gear rotates and transmits the rotation driving force of the driving gear to the gear ring, and the gear ring drives the blade clamp to rotate together to be aligned with the variable pitch bearing of the hub, so that the hub is not required to be jigged by additionally using a jigger mechanism in the blade installation process.

Drawings

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

fig. 1 is a diagram illustrating a portion of a blade lifting tool provided by an exemplary embodiment of the present disclosure.

Fig. 2 is an enlarged view of the structure of the portion a in fig. 1.

Fig. 3 is a block diagram of a blade clamp provided in accordance with an embodiment of the present disclosure.

Fig. 4 shows an exploded view of the blade holding unit of fig. 3.

Fig. 5 is a perspective view showing an internal structure of the blade holding unit in fig. 4.

Fig. 6 shows an exploded view of the blade holding unit of fig. 4.

Fig. 7 shows an enlarged view of the mobile locking assembly of fig. 4.

Fig. 8, 9 and 10 are schematic views showing the process of locking the hold-down arm relative to the upper riser arm by the hold-down arm locking assembly.

Fig. 11 is a structural view of a blade gripping unit according to another embodiment.

FIG. 12 illustrates a schematic view of a blade clamp according to an exemplary embodiment of the present disclosure.

Fig. 13 shows a schematic view of the blade clamp of fig. 12 before it is used for pitching of the blade.

Fig. 14 shows a schematic view of the blade clamp of fig. 12 after use for pitching of the blade.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the embodiments of the present disclosure should not be construed as limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

In one aspect of the present disclosure, a blade lifting tool is provided, which includes a pitch rotation mechanism and a blade clamp 100, where the pitch rotation mechanism is used to drive the blade clamp 100 to perform pitch rotation in the air so as to perform attitude adjustment in the air, so that the clamped blade may be subjected to adjustment of pitch rotation attitude so as to be aligned with a pitch bearing.

Fig. 1 is a diagram illustrating a portion of a blade lifting tool provided by an exemplary embodiment of the present disclosure. Fig. 2 is an enlarged view of the structure of the portion a in fig. 1.

As shown in fig. 1, a blade lifting tool according to an exemplary embodiment of the present disclosure includes a lifting frame 200 and a pitching rotation mechanism connected below the lifting frame 200, and may further include the blade jig 100 shown in fig. 3. The blade jig 100 is connected to a pitch rotation mechanism so as to drive the blade jig through the pitch rotation mechanism to perform a pitch operation, thereby adjusting the pitch angle of the clamped blade.

Referring to fig. 1 and 2, the pitch rotation mechanism may include a support frame 410 and a driving unit including a gear ring 610 rotatably provided on the support frame 410, a driving gear 620 positioned inside the gear ring 610, and a driven gear 630 disposed at an outer circumference of the driving gear 620, the driven gear 630 being capable of meshing with the gear ring 610 and the driving gear 620, respectively, to transmit a rotational driving force of the driving gear 620 to the gear ring 610, the gear ring 610 being for being fixedly connected to the blade jig 100 to drive the blade jig 100 to rotate with the gear ring 610.

The ring gear 610 is ring-shaped and provided with teeth on an inner circumferential surface, the outer diameter of the driving gear 620 is smaller than the inner diameter of the ring gear 610, and is arranged coaxially with the ring gear 610, and the driven gear 630 is arranged between the ring gear 610 and the driving gear 620 while being meshed with the ring gear 610 and the driving gear 620.

The ring gear 610 may be bearing-mounted on the support frame 410 so as to be rotatable with respect to the support frame 410. In other words, the bearing outer race may be fixedly mounted to the support frame 410, and the ring gear 610 may be fixed to the inner peripheral surface of the bearing inner race. Alternatively, the ring gear 610 may be integrally formed with the bearing inner race.

As shown in fig. 2, one side of the support frame 410 is provided with a convex ring protruding outwards, the gear ring 610 may be connected to the convex ring through a bearing, that is, the bearing inner ring may be sleeved on the periphery of the gear ring 610, and the bearing outer ring is nested inside the convex ring, so that the gear ring 610 may be connected to the support frame 410 through a bearing, and the gear ring 610 may rotate relative to the support frame 410, but not limited to this. It will be appreciated that the support frame 410 may also be provided with a through hole for receiving the gear ring 610, in which hole the gear ring 610 may be rotatably disposed by means of a bearing.

In this embodiment, the driving gear 620 may be used as a driving unit of the pitch rotation mechanism, the driving gear 620 may transmit a rotational driving force to the gear ring 610 through the driven gear 630, that is, the gear ring 610 may be connected to the blade holder 100 to rotate by providing a rotational force of the gear ring 610 through the rotation of the driving gear 620. For example, but not limiting of, gear ring 610 may rotate blade clamp 100 360 in the air.

Pitching rotation described in this specification means rotation of the blade jig 100 so that an angle of a longitudinal direction of the blade with respect to a horizontal plane is changed, and pitching rotation means rotation of the blade jig 100 or rotation of a part of the blade jig 100 so that the blade is rotated in a circumferential direction.

Specifically, referring to fig. 2, a plurality of driven gears 630 may be disposed on the outer periphery of the driving gear 620, and for convenience of description, this embodiment only uses 4 driven gears 630 as an example, but not limited thereto, the driven gears 630 may also be 1, 2, 3, 5, etc., and the number of driven gears 630 may be selected according to actual needs.

The 4 driven gears 630 may be disposed at the outer circumference of the driving gear 620 and engaged with the driving gear 620, the gear ring 610 is sleeved at the outer circumference of the driving gear 620 and may be coaxially disposed with the driving gear 620, the gear teeth of the gear ring 610 are disposed at the inner side of the gear ring, and the gear teeth of the 4 driven gears 630 may be engaged with the gear teeth of the gear ring 610, i.e., the driven gears 630 are disposed between the gear ring 610 and the driving gear 620 and simultaneously engaged with the gear ring 610 and the driving gear 620, so as to transmit the driving force on the driving gear 620 to the gear ring 610 and rotate the blade jig 100. In this embodiment, the 4 driven gears 630 may be identical and the driving gear 620 may be driven by a motor, such as, but not limited to, the motor may be disposed on a side of the driving gear 620 facing away from the blade clamp 100. It should be understood that the driven gears 630 are the same in this embodiment, and the driving gear 620 is disposed coaxially with the gear ring 610, but not limited to this, the driving gear 620 will not be coaxial with the gear ring 610 in case of different driven gears 630.

Further, 4 pivot shafts may be provided on a circumference outside the driving gear 620, 4 driven gears 630 may be rotatably provided on the 4 pivot shafts, respectively, and the 4 pivot shafts may be supported by the support frame 410. Alternatively, 4 pivot axes may be provided at equiangular intervals, thereby making the force transmission between the drive gear 620 and the ring gear 610 more uniform. Of course, the 4 driven gears 630 may be disposed symmetrically with respect to a line where the horizontal diameter of the driving gear 620 is located, so as to improve the vertical load carrying capacity of the pitch rotation mechanism.

With continued reference to FIG. 2, the end of the ring gear 610 that faces the blade clamp 100 may be provided with a plurality of first fastener mounting holes 611 through which fasteners may pass, the blade clamp 100 may be provided with second fastener mounting holes that mate with the first fastener mounting holes 611, the fasteners may pass through both the first fastener mounting holes 611 and the second fastener mounting holes and fasten, and the blade clamp 100 may be coupled to the pitch rotation mechanism. Of course, the end of the ring gear 610 facing the blade jig 100 may be provided with an outer flange formed by a burring, and the first fastener mounting hole 611 may be provided on the outer flange, and the present embodiment is applicable to a case where the non-tooth portion of the ring gear 610 is smaller in the radial direction of the ring gear 610 and the diameter of the fastener is larger, but is not limited thereto, and a case where the non-tooth portion of the ring gear 610 is larger in the radial direction of the ring gear 610.

Referring to fig. 3, the blade clamp 100 includes a girder 120 and blade clamping units 110, 130 disposed at both ends of the girder 120. A girder flange 121 is provided at the middle of the girder 120, and a second fastener installation hole is provided on the girder flange 121, which can be matched with the first fastener installation hole. After the blade clamp 100 and the pitching rotation mechanism are assembled, that is, the gear ring 610 is connected to the main beam flange 121 through a fastener, the blade clamp 100 can rotate together with the gear ring 610 under the drive of the pitching rotation mechanism, so that the blade clamped by the blade clamp 100 can be subjected to pitching posture adjustment in the air so as to be accurately butted with the hub.

A positioning pin 122 may be disposed at a central position of the girder flange 121, a through hole matched with the positioning pin 122 is disposed at a center of the driving gear 620, and the positioning pin 122 may be inserted into the through hole of the driving gear 620, so that when the blade clamp 100 is assembled with the pitch rotation mechanism, the two can be accurately aligned, thereby improving assembly efficiency.

As shown in fig. 3, the blade clamping units 110 and 130 are used to clamp the tip and root portions of the blade, respectively, and thus may also be referred to as tip and root clamping units, respectively. The blade holding unit 110 and the blade holding unit 130 are substantially identical in structure, except that the adjustment ranges of the sizes of the holding ports are different. Therefore, in the following description, only the structure of the blade clamping unit 110 will be described.

The blade clamping unit 110 includes an upper clamping assembly 140, a lower clamping assembly 150, and a clamping opening adjusting unit 115, wherein the clamping opening adjusting unit 115 is connected between the upper clamping assembly 140 and the lower clamping assembly 150, and is used for adjusting the size of a clamping opening formed by the upper clamping assembly 140 and the lower clamping assembly 150, and the clamping opening adjusting unit 115 can adjust the size of the clamping opening formed by the upper clamping assembly 140 and the lower clamping assembly 150, so that the blade clamping device is suitable for clamping blades with different sizes.

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

The upper clamp assembly 140 includes a hold-down arm 111 and an upper standing arm 112 extending downward from one end of the hold-down arm 111, the hold-down arm 111 being pivotable relative to the upper standing arm 112. Specifically, referring to fig. 4, the pivoting end of the pressing arm 111 is pivoted to the upper standing arm 112, and when the blade is required to be loaded, 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 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 pivot angle of the hold-down arm 111, and the second locking assembly 118 is used to lock the hold-down arm 111.

The lower clamping assembly 150 includes a bearing arm 113 and a lower standing arm 114 extending upward from one end of the bearing arm 113, the lower standing arm 114 being connected with the upper standing arm 112 so that a space (i.e., a clamping port) for clamping the blade is formed with the lower clamping assembly by the upper clamping assembly 140. The nip adjusting unit 115 is connected between the upper and lower standing arms 112 and 114 for driving the upper clamping assembly to move relative to the lower clamping assembly to adjust the distance between the pressing arm 111 and the holding arm 113, thereby adjusting the nip size. The first locking assembly 116 is used to lock the upper riser 112 relative to the lower riser 114. The second locking assembly 118 is used to lock the hold down arm 111 relative to the upper riser arm 112.

According to the blade clamp 100 of the exemplary embodiment of the present disclosure, the clamping space (i.e., the clamping port) having a "C" shape or a "" shape is formed by the upper clamping assembly and the lower clamping assembly, the pressing arm 111 and the holding arm 113 form two clamp legs for clamping opposite surfaces of the blade, and the upper standing arm 112 and the lower standing arm 114 constitute a telescopic standing arm connected between the pressing arm 111 and the holding arm 113. The clamping range of the blade is adjusted in a wide range by driving the upper standing arm 112 and the lower standing arm to move relatively through the clamping opening adjusting unit 115, and the pressing arm 111 is driven to rotate relative to the upper standing arm 112 through the angle adjusting unit 117, so that the clamping force for clamping the blade is further adjusted. 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 a pressing force to the blade. In addition, the height positions of the upper and lower vertical arms 112 and 114 can be locked by the first locking assembly 116, and the rotation angle of the pressing arm 111 with respect to the upper vertical arm 112 can be locked by the second locking assembly 118, so that the clamping state between the blade clamp 100 and the blade is maintained, the release of the blade clamp after clamping the blade is prevented, and the reliability of clamping is ensured.

Referring to fig. 4 to 6, in an embodiment, the upper and lower standing arms 112 and 114 may be a cylindrical hollow structure, i.e., a hollow cylinder shape, and formed in a nested structure with each other, and as shown, may be formed in a rectangular hollow structure. Specifically, the lower portion of the upper standing arm 112 is nested inside the upper portion of the lower standing arm 114 and can relatively slide along the height direction (Y direction shown in fig. 5) under the pushing of the nip adjusting unit 115, thereby adjusting the height/length of the telescopic standing arm composed of the upper standing arm 112 and the lower standing arm 114 to improve the versatility of use of the blade lifting tool. For example, when the portion where the upper standing arm 112 and the lower standing arm 114 are nested with each other increases, that is, the height/length of the telescopic standing arm becomes smaller, the distance between the pressing arm 111 and the holding arm 113 becomes smaller, and thus the degree of opening of the grip opening becomes smaller; conversely, when the portion where the upper standing arm 112 and the lower standing arm 114 are nested with each other is reduced, the overall height/length of the telescopic standing arm becomes large, the distance between the pressing arm 111 and the holding arm 113 becomes large, and the degree of opening of the grip opening becomes large. Alternatively, the upper and lower arms 112 and 114 may be formed of stainless steel plates to improve strength and prevent corrosion, but the present disclosure is not limited thereto. The present embodiment is not limited to the connection manner and the specific shape of the upper standing arm 112 and the lower standing arm 114, as long as the upper standing arm 112 and the lower standing arm 114 can move up and down in the vertical direction (Y direction) to adjust the distance between the pressing arm 111 and the holding arm 113.

The jaw adjustment unit 115 may include a pitch telescopic drive mechanism provided inside the lower standing arm 114. The interval telescopic driving mechanism can adopt a driving mechanism with large thrust and large stroke so as to adjust the clamping range of the blade in a large range, namely, adjust the size of the clamping opening. The pitch telescopic drive mechanism may be a telescopic ram, for example an automatically controlled hydraulic ram. Wherein one end of the telescopic ram is connected to the lower riser arm 114 and the other end is connected to the upper riser 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 through 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 clamping opening adjusting unit 115 may be a driving element capable of driving the upper vertical arm 112 and the lower vertical arm 114 to relatively move, so as to adjust the distance between the pressing arm 111 and the supporting arm 113, and other driving elements for realizing linear telescopic driving may be, for example, a cylinder, an electric screw, a bolt with nut, or the like.

The opening and closing degree of the clamp opening can be adjusted by the clamp opening 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, a backup first locking assembly 116 is provided on the basis of the lifting function, and as shown in fig. 4 to 7, 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 piece 1161 is mounted on one of the lower riser arm 114 and the upper riser arm 112. The second locking piece 1162 is mounted on the other of the lower standing arm 114 and the upper standing arm 112, and is opposite to the first locking piece 1161 in the horizontal direction, having a locking position and an unlocking position. In the locked position, the second locking member 1162 engages with the first locking member 1161 to lock the relative positions of the upper clamp assembly 140 and the lower clamp assembly 150. In the unlocked position, the second locking member 1162 is disengaged from the first locking member 1161, and the upper riser arm 112 is now movable relative to the lower riser arm 114. The first drive member 1163 may be a telescoping drive member, such as a hydraulic ram, cylinder, or lead screw. In the example shown in the drawings, the first driving member 1163 is an oil cylinder or an air cylinder, a cylinder portion of the first driving member 1163 is installed at a lower portion of the upper riser arm 112, and a piston rod of the first driving member 1163 is connected to the second locking piece 1162 for driving the second locking piece 1162 to move to at least one of the locking position and the unlocking position.

In the present embodiment, the first locking piece 1161 is a long rack, mounted on the lower standing arm 114 and extending in a direction in which the upper standing arm 112 moves relative to the lower standing arm 114 (Y direction shown in fig. 7). The second locking piece 1162 is a short rack, is installed opposite to a long rack, and is movable in a direction (X direction shown in fig. 7) perpendicular to a direction in which the upper riser arm 112 moves relative to the lower riser 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 in the locking position. In this embodiment, a stepless locking between the upper and lower arms 112, 114 is achieved by means of engagement of the long and short racks. The length of the long rack may be matched to the telescopic travel of the first drive member 1163 or to the relative distance of movement between the upper clamp assembly 140 and the lower clamp assembly 150. The length of the short racks may be smaller than that of the long racks, and the specific length is not limited as long as it has a strength capable of locking the upper and lower stand arms 112 and 114 to each other.

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

Fig. 7 shows that a first latch 1161 is formed on an inner side surface of the lower standing arm 114, a first driving member 1163 is mounted on the upper standing arm 112, and a second latch 1162 is mounted on a telescopic end of the first driving member 1163, but positions of the first latch 1161 and the second latch 1162 are interchangeable as needed.

In the present embodiment, the relative position between the upper and lower vertical arms 112 and 114 is locked by the engagement of the long and short racks with each other, but the present disclosure is not limited thereto, and the first and second locking pieces 1161 and 1162 may also employ other known locking structures in the art, for example, locking holes are engaged with locking pins, etc., as long as locking or releasing of the upper and lower vertical arms 112 and 114 can be achieved by the engagement of the first and second locking pieces 1161 and 1162 with each other.

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

In order to further adjust the tightness of the clamping blade, the pressing arm 111 may be driven to rotate with respect to the upper standing arm 112 by the angle adjusting unit 117 to adjust the opened and closed state of the clamping opening of the blade.

Referring to fig. 4 to 6, the blade clamping 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 adjustment unit 117 is used to adjust the pivot angle of the hold-down arm 111 with respect to the upper standing arm 112 to adjust the inclination angle of the hold-down arm 111 with respect to the upper standing arm 112. The second locking assembly 118 serves to lock the hold-down arm 111 with respect to the upper riser arm 112, so that the safety of the blade clamping unit 110 can 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 adjustment 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 arm 112, and a second end of which is hinged to an end portion of the pressing arm 111, thereby driving the pressing arm 111 to pivot with respect to the upper arm 112 about the pivot shaft 1121, and adjusting an inclination angle of the pressing arm 111 with respect to the upper arm 112 to drive the pressing arm 111 to rotate with respect to the upper arm 112 through the angle adjustment unit 117, so as to further adjust a magnitude of a clamping force for clamping the blade.

Specifically, the upper portion of the upper standing arm 112 is provided with a pivot shaft 1121 (as shown in fig. 5 and 6), and the pressing arm 111 is connected to the upper standing arm 112 through the pivot shaft 1121. The first end of the second telescopic cylinder may be hinged to the lower portion of the upper standing arm 112, and the second end of the second telescopic cylinder may be hinged to the 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 adopts a large-thrust large-stroke design, and the other adopts a high-precision small-stroke design, so as to meet the control requirements on different precision and strokes. In addition, the angle adjustment unit 117 may be other driving elements than a hydraulic cylinder, which can drive the pressing arm 111 to rotate about the pivot shaft 1121 with respect to the upper standing arm 112, and may be, for example, an air cylinder or an electric screw or a bolt-and-nut, or the like.

A mounting plate 1122 may be connected to the upper end of the upper standing arm 112, the mounting plate 1122 extending transversely with respect to the upper end of the upper standing arm 112, and a pivot shaft 1121 may be mounted at an 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 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 correspondingly adjusting the clamping force on the blade.

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

Specifically, the second locking assembly 118 may include a stopper for restricting the retraction of the first end of the second telescopic cylinder, thereby preventing the pressing arm 111 from being pivoted upward to open in a state of clamping the blade, resulting in the blade falling off.

In an embodiment, the stop may be a locking wedge 1181. The locking wedge 1181 has a locked position in which the locking wedge 1181 abuts the first end of the second telescopic cylinder to limit retraction thereof, and an unlocked position; in the unlocked position, the locking wedge 1181 is disengaged from the first end of the second telescoping cylinder, thereby releasing the first end of the second telescoping cylinder so that it may be retracted.

To allow 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 frame 1183, the second drive member 1182 may be a telescopic ram to urge 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 frame 1183, and the piston rod of the second drive member 1182 is connected to the locking wedge 1181 for driving the locking wedge 1181 into at least one of its locked and unlocked positions.

The second locking assembly 118 may also include a support bracket 1183. A support frame 1183 is installed at the upper portion of the upper standing arm 112, and a locking wedge 1181 is installed on the support frame 1183 and is movable in a direction approaching or separating from the first end of the second telescopic cylinder. The support frame 1183 may be formed with a groove 1184, the groove 1184 extending 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 is retracted, the bottom of the groove 1184 supports the first end.

Alternatively, the locking wedge 1181 may have a ramp 1181a, with the ramp of the locking wedge 1181 abutting against a lower portion of the first end of the second telescopic cylinder in the direction in which the first end of the second telescopic cylinder is retracted in the locked position to limit retraction of the first end of the second telescopic cylinder. By the inclined surface design, when the locking wedge 1181 is pressed by the reverse acting force, the inclined surface support with the inclined angle forms a friction angle self-locking state, so that after the blade is clamped in place and the second driving member 1182 pushes the locking wedge 1181 to the locking position, the second driving member 1182 does not need to provide pushing force, the telescopic state of the angle adjusting unit 117 can be locked, the rotation angle between the pressing arm 111 and the upper standing arm 112 is kept, and the safety clamping of the blade is not at risk.

Fig. 8 to 10 show a process in which the angle adjustment unit 117 drives the pressing arm 111 to rotate relative to the upper standing arm 112 and is locked by the locking wedge 1181. As shown in fig. 8, the hold-down arm 111 is in a state of being rotated outwardly 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. 9, the first end of the second telescopic cylinder extends out 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 standing arm 112; as shown in fig. 10, after the hold-down arm 111 is rotated into position with respect to the upper standing arm 112, the formed clamping opening can clamp the blade, at this time, the second driving member 1182 pushes the locking wedge 1181 to move leftward to the locking position, i.e., the locking wedge 1181 is embedded between the first end of the second telescopic cylinder and the supporting 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, thereby restricting the retraction of the first end of the second telescopic cylinder. Meanwhile, if the blade is installed, the second driving member 1182 drives the locking wedge 1181 to move rightward 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 loose, the blade can be released, and the safe disassembly of the blade can be completed.

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

However, the present disclosure is not limited thereto, and in another embodiment, as shown in fig. 11, the stopper may include a baffle 1185 and an eccentric 1186. The baffle 1185 is mounted on the upper riser 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 riser arm 112. The eccentric wheel 1186 is mounted on the end part 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 expansion and the contraction of the piston rod of the second telescopic cylinder are limited; in the unlocked position of the eccentric 1186, the eccentric 1186 is disengaged from the baffle 1185 such that the first end of the second telescoping cylinder is telescoping. The eccentric wheel 1186 may be a disc shape, including 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, where the predetermined gap is greater than the end diameter of the eccentric wheel 1186 and less than the long diameter of the eccentric wheel 1186. In the locked position, the long diameter end rotates to the baffle 1185 and abuts against the baffle 1185 to prevent the piston rod of the second telescopic oil cylinder from retracting, and in the unlocked position, the short diameter end rotates to the baffle 1185 and is separated from the baffle 1185, and the piston rod can freely extend and retract 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 telescoping drive member, such as a hydraulic ram, cylinder, or lead screw. In the example shown in the drawings, the third drive member 1187 may be a telescopic ram, and a cylinder of the third drive member 1187 may be mounted on the hold-down arm 111, with a piston rod of the third drive member 1187 being hinged to the eccentric 1186 for driving the eccentric 1186 to rotate between the locked and unlocked positions.

The specific structures of the nip 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 nip are 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, which are used for checking the mounted blade in place, so that the mounted blade is attached in place, one end of the upper limiting block 1142 can be fixedly connected to the upper standing arm 112, and the other end of the upper limiting block 1142 can 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 stopper 1142 may be disposed at a corner of the upper clamping assembly 140 formed by the upper standing arm 112 and the pressing arm 111, and the lower stopper 1141 may be disposed at a corner of the lower clamping assembly 150 formed by the lower standing arm 114 and the holding arm 113.

FIG. 12 illustrates a schematic view of a blade clamp according to an exemplary embodiment of the present disclosure. Fig. 13 shows a schematic view of the blade clamp of fig. 12 before it is used for pitching of the blade. Fig. 14 shows a schematic view of the blade clamp of fig. 12 after use for pitching of the blade.

Referring to fig. 12 to 14, the blade clamp 100 may further include a pitch drive member 141 that drives the blade clamping units 110 and 130 to rotate relative to the main beam 120; a guide rail 142 formed on one of the blade clamping units 110 and 130 and the main beam 120; and a rail groove 143 formed on the other of the blade clamping units 110 and 130 and the girder 120 and movable with respect to the guide rail 142.

According to the blade clamp of the exemplary embodiment of the present disclosure, a small-range pitching of the blade during the assembly process of the wind turbine generator and the blade lifting process can be realized, so that the blade is aligned with the hub and accurately connected to the hub, and during the pitching process, the blade clamping units 110 and 130 are facilitated to stably rotate relative to the main beam 120 through the cooperation of the guide rail 142 and the track groove 143, so that the safety stability of the blade clamp 100 during the blade pitching process is ensured. For example, but not limited to, the blade hoisting tool provided in this embodiment may pitch in 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 portion of the lower vertical arm 114, the other end is hinged to the end of the main beam 120, and the blade clamping units 110, 130 are driven to rotate relative to the main beam 120 by linear telescopic movement of the pitch drive member 141. The linear telescopic drive 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 girder 120 has receiving spaces at both ends thereof for receiving hydraulic cylinders, the ends of piston rods of the hydraulic cylinders are connected with the lower vertical arms 114 through connection posts perpendicular to the lower vertical arms 114, and open grooves 146 for preventing the connection posts from interfering with the pitch drive members 141 are formed at the lower portions of both ends of the girder 120. The open groove 146 is an opening extending in the expansion and contraction direction of the pitch drive member 141. The other side surface of the lower standing arm 114 opposite to the side surface is also formed with a guide rail 142.

With continued reference to fig. 4-6 and 11-14, each of the upper and lower clamp assemblies 140 and 150 may include a follower 119 and a clamp driving unit 1131 for driving the follower 119 to move in the extending direction of the clamp arm 111 or the support arm 113, and the clamp driving unit 1131 may include a cylinder and a piston rod, specifically, a free end of the piston rod may be hinged to the follower 119, and a free end of the cylinder may be hinged to the clamp arm 111 or the support arm 113 to drive the follower 119 to move by telescoping of the piston rod relative to the cylinder, so that the follower 119 is located in a tight fitting position with the blade, that is, the blade clamping is more stable by adjusting the fitting degree of the blade with the follower 119, thereby improving safety during the blade mounting process. The telescoping direction of the pressing piece driving unit 1131 is parallel to the extending direction of the pressing arm 111 or the holding arm 113. Further, the compressing member driving unit 1131 is sleeved in the inner cavity of the compressing arm 111 or the supporting arm 113, so that the whole structure of the blade clamping unit is attractive.

The compliant pressure members 119 may be formed of components that adjust shape or angle based on the force of external forces to conform to the blade size and airfoil shape as it is gripped to the blade surface. The follower 119 in the upper clamp assembly and the follower 119 of the lower clamp assembly are similar in structure and face each other. Hereinafter, the following-shaped pressing member 119 in the above clamping assembly is exemplified, and its structure and connection relation with other members are described in detail.

Referring to fig. 5 and 6, the follower 119 is rotatable about a first deflection axis 1191 and a second deflection axis 1192, the first deflection axis 1191 extending along the length of the blade and the second deflection axis 1192 extending along the chord of the blade. The chord direction of the blade is perpendicular to the length direction of the blade, and may be the direction from the leading edge to the trailing edge of the blade. In other words, the chord direction of the blade coincides with the extending direction of the hold-down arm 111.

The upper clamp assembly compliant pressure member 119 may include a deflection mount 1193 and a clamp block 1194. One side of the deflection support 1193 is rotatably connected to the hold-down arm 111 via a first deflection shaft 1191; the clamping block 1194 is rotatably connected to the other side of the deflection support 1193 via a second deflection shaft 1192, so that the degree of fit between the clamping block 1194 and the blade in the transverse and longitudinal directions is ensured during the process of clamping the blade by the clamping block 1194, and the profile variation of the follow-up pressing member 119 can be adapted to the different profiles of the blade.

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

Optionally, the follower 119 may also include a deflection frame 1195 and a displacement screw 1196. The yaw frame 1195 is connected to the displacement screw 1196 and is movable back and forth (in the left-right direction in fig. 5 and 7) along the chord length direction of the blade (X direction shown in fig. 5 and 7) by the pushing of the displacement screw 1196, thereby adjusting the position of the follower 119 in the extending direction of the pressing arm 111. The first yaw axis 1191 may be mounted to a yaw frame 1195. After each installation and confirmation of the leaf shape, the displacement screw 1196 is manually adjusted by the ground to adapt to radial deviation caused by the gravity centers of different leaf shapes.

Optionally, the surfaces of the gripping blocks 1194 that contact the blade may be lined with a layer of rubber, nylon, or the like to prevent damage to the blade when the gripping process is focused on colliding with the blade, increase cushioning capacity, and reduce wear on the blade.

The utility model provides a blade hoist and mount frock need not to use extra jigger frock, can avoid under the bigger and bigger circumstances of blade, the risk that brings when using jigger frock and horizontal blade hoist and mount frock installation blade has reduced the development cost of blade hoist and mount frock, and installation simple process, the interface is few.

As shown in fig. 1, the blade hoisting tool further comprises a boom 210, a hoisting point connecting beam 220 and a telescopic member 300.

The hanging point connecting beam 220 may be disposed on the support frame 410 in a horizontal direction, and a guide rail may be formed on the hanging point connecting beam 220. The first end of the boom 210 may be adapted to be coupled to a hook of a lifting apparatus and the second end of the boom 210 may be coupled to a point of attachment cross beam 220 and movable along a rail to adjust the point of attachment position. The first end of the telescopic member 300 may be connected to the support frame 410, and the second end of the telescopic member 300 is connected to the second end of the boom 210 to move the second end of the boom 210 along the guide rail by the telescopic member 300 being telescopic.

In addition, in addition to providing a drive assembly within the support frame 410, a power source (such as a pump station) or the like may be provided for powering the telescoping member 300. Optionally, a counterweight (not shown) may be further disposed on the supporting frame 410 as required, and the posture of the member to be lifted during lifting may be further adjusted by disposing a configuration block. Therefore, the double functions of the balancing weight and the adjustment of the hanging point can facilitate the hanging piece to reach the expected posture during the hanging.

In the description of the present application, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

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 present disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (14)

1. The blade hoisting tool is characterized by comprising a pitching rotation mechanism and a blade clamp (100);

the pitch rotation mechanism includes: a support frame (410), a driving unit including a gear ring (610) rotatably provided on the support frame (410), a driving gear (620) located inside the gear ring (610), and a driven gear (630) arranged between an outer circumference of the driving gear (620) and an inner circumference of the gear ring (610), the driven gear (630) being capable of meshing with the gear ring (610) and the driving gear (620), respectively, to transmit a rotational driving force of the driving gear (620) to the gear ring (610), the gear ring (610) being for fixed connection to a blade jig (100) to drive the blade jig (100) to rotate with the gear ring (610);

The blade clamp (100) comprises a main beam (120) and blade clamping units (110, 130) arranged at two ends of the main beam (120), and the pitching rotation mechanism is connected to the main beam (120) and can drive the main beam (120) to rotate along with the gear ring (610);

the blade clamping units (110, 130) comprise 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 oil cylinder, and the clamping opening adjusting unit (115) is connected between the upper clamping assembly (140) and the lower clamping assembly (150) and is used for adjusting the size of a clamping opening formed by the upper clamping assembly (140) and the lower clamping assembly (150);

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 supporting arm (113) and a lower standing arm (114) extending upwards from one end of the supporting 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 riser arm (112) relative to the lower riser arm (114).

2. The blade lifting tool as recited in claim 1, wherein the driven gears (630) are a plurality of, and the driven gears (630) are equiangularly spaced apart from the outer periphery of the driving gear (620).

3. The blade lifting tool as claimed in claim 2, wherein a plurality of fastener mounting holes (611) are provided on the gear ring (610) so that the gear ring (610) can be fixedly connected with the blade clamp (100) through fasteners.

4. The blade lifting tool as claimed in claim 1, wherein the number of driven gears (630) is 2-6, symmetrically arranged around the circumference of the driving gear (620).

5. The blade lifting tooling of claim 1, wherein the first locking assembly (116) comprises:

a first lock (1161) mounted on one of the lower riser arm (114) and the upper riser arm (112);

a second locking member (1162) mounted on the other of the lower and upper riser arms (114, 112) and opposite the first locking member (1161), having a locked position in which the second locking member (1162) engages the first locking member (1161) to lock the relative position of the upper and lower clamp assemblies (140, 150), and an unlocked position in which the second locking member (1162) is disengaged from the first locking member (1161) such that the upper riser arm (112) is movable relative to the lower riser arm (114); and

A first drive member (1163) connected to the second lock (1162) for driving the second lock (1162) to move to at least one of the locked position and the unlocked position.

6. The blade lifting tooling of claim 5, wherein the first locking member (1161) is a long rack mounted on the lower riser arm (114) and extending in a direction in which the upper riser arm (112) moves relative to the lower riser arm (114); the second locking piece (1162) is a short rack, is mounted on the upper vertical arm (112) and is opposite to the long rack, and can move along a direction perpendicular to the moving direction of the upper vertical arm (112) relative to the lower vertical arm (114) under the driving of the first driving member (1163), so that the short rack and the long rack are meshed with each other at the locking position, the first driving member (1163) is a telescopic cylinder, and the short rack is arranged at the first end of the telescopic cylinder.

7. The blade lifting tool according to claim 1, 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) by means of the pivot shaft (1121),

The blade clamping unit (110) further comprises an angle adjusting unit (117) for driving the pressing arm (111) to rotate relative to the upper standing arm (112) so as 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 cylinder, a first end of the second telescopic cylinder is hinged with the lower part of the upper standing arm (112) and can stretch out and draw back, and a second end of the second telescopic cylinder is hinged with the end part of the pressing arm (111) so as to drive the pressing arm (111) to pivot around the pivot shaft (1121).

8. The blade lifting tooling according to claim 7, wherein the blade clamping unit (110) further comprises a second locking assembly (118) for locking the hold-down 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 ram.

9. The blade lifting tooling of claim 8, wherein the stop is a locking wedge (1181), the locking wedge (1181) having a locked position in which the inclined surface 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 is retracted, and an unlocked position in which the locking wedge (1181) is disengaged from the first end of the second telescopic cylinder.

10. The blade lifting tooling of claim 9, wherein the second locking assembly (118) further comprises a second drive member (1182) mounted on the hold-down arm (111) for driving the locking wedge (1181) into at least one of the locked and unlocked positions.

11. The blade lifting tool according to claim 10, wherein the second locking assembly (118) further comprises a support frame (1183), the support frame (1183) is mounted on the upper portion of the upper standing arm (112), the locking wedge (1181) is mounted on the support frame (1183) and can move along a direction approaching or separating from the first end of the second telescopic cylinder, a groove (1184) is formed on the support frame (1183), the groove (1184) extends along a telescopic travel of the first end of the second telescopic cylinder to guide a movement track of the first end of the second telescopic cylinder, and after the first end of the second telescopic cylinder is retracted, a bottom of the groove (1184) supports the first end.

12. The blade lifting tooling of claim 8, wherein the stop comprises:

A baffle plate (1185) mounted on the upper standing arm (112) and arranged on a telescopic path of the first end of the second telescopic cylinder; and

eccentric wheel (1186) install on compressing tightly arm (111) to can rotate relative compressing tightly arm (111) to locking position and unblock position, in locking position, eccentric wheel (1186) is supported and is leaned on baffle (1185) to restrict flexible of the first end of second flexible hydro-cylinder, in unblock position, eccentric wheel (1186) with baffle (1185) breaks away from, thereby the first end of second flexible hydro-cylinder can stretch out and draw back.

13. The blade lifting tooling of claim 12, wherein the eccentric (1186) includes a long diameter end and a short diameter end, the long diameter end rotating to the baffle (1185) and abutting against the baffle (1185) in the locked position, and the short diameter end rotating to the baffle (1185) and being separated from the baffle (1185) in the unlocked position.

14. The blade lifting tooling of claim 13, wherein the second locking assembly (118) further comprises a third drive member (1187) mounted on the hold-down arm (111) for driving the eccentric (1186) into at least one of the locked and unlocked positions.