Wind power blade cutting matching device

Abstract

The invention relates to the technical field of cutting clamps, in particular to a wind power blade cutting matching device. The device comprises a plurality of sleepers which are laid on the ground side by side, the tops of the sleepers are fixedly connected with a pair of transferring mechanisms, the two transferring mechanisms are both perpendicular to the multiple sleepers, the tops of the two transferring mechanisms are fixedly connected with a locking mechanism, and a supporting mechanism is arranged at the bottom of the center of the locking mechanism; the synchronism of the two transfer mechanisms during moving can be balanced through the arranged locking mechanisms, and in the process that the supporting mechanisms move along with the transfer mechanisms, the supporting mechanisms can discharge and skip foreign matter located on the tops of the multiple sleepers, so that the supporting mechanisms support the wind power blades all the time. When the adhesion degree of the foreign matter in the limiting groove is low, the supporting rod moving along with the transfer seat can discharge the foreign matter out of the limiting groove; when the adhesion degree of the foreign matter in the limiting groove is high, the bottom of the supporting rod can skip the foreign matter to synchronously move along with the transferring base.

Description

Technical Field

[0001] The invention relates to the technical field of cutting fixtures, and in particular to a wind turbine blade cutting matching device. Background Art

[0002] Wind turbine blades have a certain service life, and the recycling and reuse of retired wind turbine blades has become an urgent problem to be solved. Retired wind turbine blades can still maintain their good mechanical properties, but this also brings certain difficulties to the recycling of retired wind turbine blades. After the wind turbine blades are retired and disassembled, they need to be cut for easy transportation. Because of their long length and different sizes of various parts, the cutting process requires multiple adjustments of the fixing device by manual or mechanical means according to the size changes, resulting in low cutting efficiency.

[0003] In the related art, the invention patent with announcement number CN114701004B discloses a fixing clamp and a retired wind turbine blade cutting device, and the key points of its technical solution are as follows: the fixing clamp includes: two first telescopic parts, two second telescopic parts and a flexible belt; the two first telescopic parts are arranged at intervals, and the free ends of the first telescopic parts are provided with through holes; the two second telescopic parts are arranged at intervals, and the second telescopic parts are arranged one by one with the first telescopic parts; one end of the flexible belt is provided with a through hole and connected to the free end of a second telescopic part, and the other end of the flexible belt is provided with another through hole and connected to the free end of another second telescopic part; the two first telescopic parts can clamp the opposite ends of the material, and the two second telescopic parts drive the flexible belt to be tensioned, so that the flexible belt is close to the wall surface of the material to compress the material. In the fixing clamp of the present invention, the two first telescopic parts clamp the two opposite end surfaces of the material, and the two second telescopic parts drive the two ends of the flexible belt to move in the direction away from the through holes, so that the flexible belt compresses the material, and the material is firmly fixed, which is conducive to improving the cutting quality.

[0004] However, the fixing device in the prior art may cause the following problems when fixing the wind turbine blade and moving it toward the saw blade for cutting:

[0005] 1. When the blade cuts the blade, the pressure generated by the cutting will be directly applied to the telescopic part. In other words, the blade will exert an opposing force on the blade, which may not only cause the position of the saw blade in the two telescopic parts to shift, so that the blade cannot be cut into the original required shape. Moreover, in the above background technology, the wind turbine blade is transported by a conveyor shaft, and the tangential opposing force of the blade may also "push" the wind turbine blade away from the cutting position, thereby affecting the cutting efficiency.

[0006] 2. When the blade cuts the wind turbine blade, the pressure exerted by the blade on the blade will be transmitted to the transfer device through the blade. Over time, the pulley and track of the transfer device will continue to be squeezed, which will affect the efficiency and stability of the subsequent transfer of the wind turbine blade.

[0007] In view of this, we propose a wind turbine blade cutting supporting device to improve the deficiencies in the prior art. Summary of the invention

[0008] In view of the technical problems existing in the prior art, the present invention provides a wind turbine blade cutting supporting device to solve the problem in the above-mentioned background technology that the pressure generated by the blade during cutting is directly applied to the transfer device.

[0009] In order to solve the above-mentioned problems, the technical solution of the present invention is as follows: a wind turbine blade cutting supporting device, comprising a plurality of sleepers laid on the ground and arranged side by side, a pair of transfer mechanisms being fixedly connected to the top of the sleepers, two of the transfer mechanisms being perpendicular to the plurality of sleepers, a locking mechanism being fixedly connected to the top of the two transfer mechanisms, a supporting mechanism being provided at the bottom of the center of the locking mechanism, one end of the supporting mechanism away from the locking mechanism being slidably connected to the plurality of sleepers, and a cutting mechanism being provided at the same end of the two transfer mechanisms;

[0010] The locking mechanism is used to fix the two sides of the blade to be cut, the two transfer mechanisms are used to drive the blade to move to the cutting mechanism, the cutting mechanism is used to cut the blade, and during the process of the cutting mechanism cutting the blade, the supporting mechanism is used to share the extrusion force on the locking mechanism;

[0011] The locking mechanism can balance the synchronization of the two transfer mechanisms when they move. In the process in which the support mechanism follows the movement of the transfer mechanism, the support mechanism can discharge and jump over foreign objects located on top of multiple sleepers, so that the support mechanism always supports the wind turbine blades.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the wind turbine blade cutting supporting device, a locking mechanism is provided to fix the two sides of the blade to be cut, two transfer mechanisms are used to drive the blade to move toward the cutting mechanism, the cutting mechanism is used to cut the blade, and during the process of the cutting mechanism cutting the blade, the supporting mechanism is used to share the extrusion force exerted on the locking mechanism.

[0014] 2. In the wind turbine blade cutting supporting device, the locking mechanism can balance the synchronization of the two transfer mechanisms when they move. When the support mechanism follows the transfer mechanism to move, the support mechanism can discharge and jump over the foreign objects on top of the multiple sleepers, so that the support mechanism always supports the wind turbine blades. When the degree of adhesion of the foreign objects in the limit groove is loose, the support rod that moves with the transfer seat can discharge the foreign objects out of the limit groove; when the degree of adhesion of the foreign objects in the limit groove is tight, the bottom of the support rod can jump over the foreign objects and move synchronously with the transfer seat.

[0015] On the basis of the above technical solution, the present invention can also make the following improvements:

[0016] As a further improvement of the technical solution, the transfer mechanism includes a track fixedly connected to the top of a plurality of sleepers, and a transfer seat is slidably connected to the top of the track.

[0017] As a further improvement of the technical solution, the transfer seat is internally rotatably connected with a plurality of pulleys, and the pulleys are driven by a motor.

[0018] The beneficial effect of adopting the above improved scheme is that the motor drives the pulley coaxially connected to its output shaft to rotate, and driven by the friction between the pulley and the track, the transfer seat will move along the track, thereby driving the wind turbine blade to be cut to move below the cutting mechanism, and when the wind turbine blade exceeds the length required by the cutting mechanism (this length is generally a length that is convenient for subsequent transportation and recycling), the cutting mechanism cuts the blade. Repeat the above operation to achieve continuous cutting of the wind turbine blade.

[0019] As a further improvement of the technical solution, the locking mechanism includes two pairs of locking clamps fixedly connected to the tops of the two transfer seats, the two locking clamps at different heights are fixed by bolts, and a connecting frame is fixedly connected between the two locking clamps at the same height.

[0020] The beneficial effect of adopting the above-mentioned improved scheme is that after separating the upper and lower support rods, the two sides of the wind turbine blade are placed between the upper and lower locking clamps, and then the two sides of the wind turbine blade are fixed by bolts, waiting for the cutting mechanism to cut it from the top of the blade, which can prevent the wind turbine blade from shifting during the cutting process.

[0021] As a further improvement of the present technical solution, the supporting mechanism includes a rotating bolt and a limiting groove, the rotating bolt is fixedly connected to a connecting frame located below, the limiting groove is opened on the top of a plurality of sleepers, a support rod is provided between the rotating bolt and the limiting groove, one end of the support rod is rotatably connected to the rotating bolt, and the end of the support rod away from the rotating bolt is slidably connected to the limiting groove.

[0022] As a further improvement of the technical solution, both ends of the rotating bolt that are far away from each other are provided with limit rings, and the inside of the two limit rings are provided with torsion springs. The inner ring of the torsion spring is fixedly connected to the outer ring of the rotating shaft at the top of the support rod, and the outer ring of the torsion spring is fixedly connected to the inner ring of the corresponding limit ring.

[0023] The beneficial effect of adopting the above-mentioned improvement scheme is that when the degree of adhesion of foreign matter in the limit groove is loose (that is, the maximum static friction force between the foreign matter and the limit groove is less than the elastic force of the torsion spring deformation), the support rod that moves with the transfer seat can expel the foreign matter out of the limit groove; when the degree of adhesion of foreign matter in the limit groove is tight (that is, the maximum static friction force between the foreign matter and the limit groove is greater than the elastic force of the torsion spring deformation), the bottom of the support rod can jump over the foreign matter and move synchronously with the transfer seat. After the top of the support rod rotates and then the bottom of the support rod jumps over the foreign matter, the restoring force of the deformed torsion spring drives the support rod back to a state perpendicular to the connecting frame, so as to ensure that the support rod can always provide support force for the wind turbine blades.

[0024] As a further improvement of the technical solution, the cutting mechanism includes a gantry located at the same end of the two tracks, and the gantry is provided with a saw blade on a side close to the track.

[0025] As a further improvement of the technical solution, a plurality of guide rods are provided on one side of the gantry, a mounting frame is slidably connected to the plurality of guide rods, the saw blade is rotatably connected to the mounting frame, a hydraulic rod is provided on the top of the gantry, a fixed part of the hydraulic rod is fixedly connected to the gantry, and a movable part of the hydraulic rod is fixedly connected to the mounting frame.

[0026] The beneficial effect of adopting the above-mentioned improved scheme is that after the wind turbine blade slides out a certain length from the bottom of the saw blade (this length can be adjusted according to actual needs), the motor driving the saw blade is started, and the motor drives the saw blade to rotate. At this time, the movable part of the hydraulic rod drives the mounting frame to slide downward along the guide rod to complete the cutting of the wind turbine blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0028] Figure 2 It is a left view of the overall structure of the present invention;

[0029] Figure 3 It is a front view of the overall structure of the present invention;

[0030] Figure 4 A three-dimensional diagram of the transfer mechanism of the present invention;

[0031] Figure 5 is a three-dimensional diagram of the locking mechanism of the present invention;

[0032] Figure 6 It is a left side view of the support mechanism of the present invention;

[0033] Figure 7 For the present invention Figure 5 The enlarged view of point A in the middle;

[0034] Figure 8 is a front view of the support mechanism of the present invention;

[0035] Fig. 9 It is a three-dimensional diagram of the cutting mechanism of the present invention.

[0036] The meaning of each number in the figure is:

[0037] 100. Sleepers;

[0038] 200, transfer mechanism; 210, track; 220, transfer seat; 230, pulley;

[0039] 300, locking mechanism; 310, locking clip; 320, bolt; 330, connecting frame;

[0040] 400, support mechanism; 410, rotating bolt; 420, limiting groove; 430, support rod; 440, limiting ring; 450, torsion spring; 500, cutting mechanism; 510, gantry; 520, saw blade; 530, guide rod; 540, mounting frame; 550, hydraulic rod. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In order to solve the problem in the background art that the pressure generated by the blade cutting will be directly applied to the transfer device, the cutting device in the present application (i.e. the cutting mechanism 500 to be described below) is arranged above the wind turbine blade, and the cutting device adopts a method of cutting from top to bottom to prevent the lateral friction generated by the blade cutting the wind turbine blade from causing the position of the wind turbine blade to be skewed, resulting in the blade not being cut into the required shape. At the same time, a supporting device (i.e. the supporting mechanism 400 to be described) is arranged below the wind turbine blade to share the pressure on the sliding device (i.e. the transfer mechanism 200 to be described below) throughout the process (this pressure includes the gravity of the wind turbine blade and the squeezing force of the cutting device during cutting).

[0043] See also Figure 1-Figure 3As shown, the purpose of this embodiment is to provide a wind turbine blade cutting supporting device, including a plurality of sleepers 100 laid on the ground and arranged side by side, a pair of transfer mechanisms 200 are fixedly connected to the top of the sleepers 100, the two transfer mechanisms 200 are perpendicular to the plurality of sleepers 100, a locking mechanism 300 is fixedly connected to the top of the two transfer mechanisms 200, a supporting mechanism 400 is provided at the bottom of the center of the locking mechanism 300, one end of the supporting mechanism 400 away from the locking mechanism 300 is slidably connected to the plurality of sleepers 100, and a cutting mechanism 500 is provided at the same end of the two transfer mechanisms 200;

[0044] The locking mechanism 300 is used to fix the two sides of the blade to be cut, and the two transfer mechanisms 200 are used to drive the blade to move to the cutting mechanism 500. The cutting mechanism 500 is used to cut the blade. During the process of the cutting mechanism 500 cutting the blade, the supporting mechanism 400 is used to share the squeezing force on the locking mechanism 300.

[0045] The locking mechanism 300 can balance the synchronization of the movement of the two transfer mechanisms 200. When the support mechanism 400 follows the movement of the transfer mechanism 200, the support mechanism 400 can discharge and jump over foreign objects located on top of the plurality of sleepers 100, so that the support mechanism 400 always supports the wind turbine blades.

[0046] Working principle:

[0047] First, the wind turbine blade to be cut is fixed in the locking mechanism 300 , wherein two sides of the wind turbine blade that are away from each other are respectively located at the tops of the two transfer mechanisms 200 .

[0048] Next, the transfer mechanism 200 is started, and the two transfer mechanisms 200 drive the blades to be cut to move below the cutting mechanism 500. The length of the wind turbine blades passing under the cutting mechanism 500 is the length that needs to be cut. During this period, the locking mechanism 300 ensures the synchronization of the two transfer mechanisms 200 when transporting the wind turbine blades.

[0049] When the support mechanism 400 moves following the transfer mechanism 200, if foreign matter appears at the center of the plurality of sleepers 100, it will affect the synchronization of the support mechanism 400 moving following the transfer mechanism 200. If the foreign matter is loosely attached to the sleeper 100, the bottom of the support mechanism 400 can directly scrape the foreign matter on the sleeper 100; if the foreign matter is tightly attached to the sleeper 100, the bottom of the support mechanism 400 will skip the foreign matter and move synchronously with the transfer mechanism 200 to ensure that the support mechanism always supports the wind turbine blades.

[0050] Since the length of the wind turbine blades to be cut is usually long, they need to be cut into multiple sections for the convenience of subsequent transportation. Therefore, a transfer mechanism 200 is provided to cooperate with the cutting mechanism 500 to continuously cut the blades.

[0051] like Figure 4 As shown, the transfer mechanism 200 includes a track 210 fixedly connected to the top of a plurality of sleepers 100 , and a transfer seat 220 is slidably connected to the top of the track 210 .

[0052] The improvement lies in that a plurality of pulleys 230 are rotatably connected inside the transfer seat 220, and the pulleys 230 are driven by a motor.

[0053] It should be noted that after the power of the motor (a servo motor is selected, which can rotate forward and backward) is turned on, the motor drives the pulley 230 coaxially connected to its output shaft to rotate, and driven by the friction between the pulley 230 and the track 210, the transfer seat 220 will move along the track 210, thereby driving the wind turbine blade to be cut to move below the cutting mechanism 500. After the wind turbine blade exceeds the length required by the cutting mechanism 500 (this length is generally a length that is convenient for subsequent transportation and recycling), the cutting mechanism 500 cuts the blade. Repeat the above operation to achieve continuous cutting of the wind turbine blade.

[0054] exist Figure 5 In the figure, the locking mechanism 300 includes two pairs of locking clamps 310 fixedly connected to the tops of the two transfer seats 220, the two locking clamps 310 at different heights are fixed by bolts 320, and a connecting frame 330 is fixedly connected between the two locking clamps 310 at the same height.

[0055] It should be disclosed that the upper and lower support rods 430 are separated, the two sides of the wind turbine blade are placed between the upper and lower locking clamps 310, and then the two sides of the wind turbine blade are fixed by bolts 320, waiting for the cutting mechanism 500 to cut it from the top of the blade.

[0056] When the cutting mechanism 500 cuts the wind turbine blade, the pressure exerted by the blade on the blade will be transmitted to the pulley 230 and the track 210 through the blade. Over time, the pulley 230 and the track 210 will be squeezed, which will affect the efficiency and stability of the subsequent transfer of the wind turbine blade.

[0057] Next, through Figure 6-Figure 8The working process of the support mechanism 400 is explained. The support mechanism 400 includes a rotating bolt 410 and a limiting groove 420. The rotating bolt 410 is fixedly connected to the connecting frame 330 located below. The limiting groove 420 is opened on the top of multiple sleepers 100. A support rod 430 is provided between the rotating bolt 410 and the limiting groove 420. One end of the support rod 430 is rotatably connected to the rotating bolt 410, and the end of the support rod 430 away from the rotating bolt 410 is slidably connected to the limiting groove 420.

[0058] Moreover, both ends of the rotating bolt 410 that are far away from each other are provided with limit rings 440, and the interiors of the two limit rings 440 are provided with torsion springs 450, the inner rings of the torsion springs 450 are fixedly connected to the outer rings of the rotating shaft at the top of the support rod 430, and the outer rings of the torsion springs 450 are fixedly connected to the inner rings of the corresponding limit rings 440.

[0059] That is to say, when the degree of adhesion of foreign matter in the limiting groove 420 is loose (that is, the maximum static friction between the foreign matter and the limiting groove 420 is less than the elastic force of the deformation of the torsion spring 450), the support rod 430 that moves with the transfer seat 220 can expel the foreign matter from the limiting groove 420; when the degree of adhesion of foreign matter in the limiting groove 420 is tight (that is, the maximum static friction between the foreign matter and the limiting groove 420 is greater than the elastic force of the deformation of the torsion spring 450), the bottom of the support rod 430 can jump over the foreign matter and move synchronously with the transfer seat 220. After the top of the support rod 430 rotates and then the bottom of the support rod 430 jumps over the foreign matter, the restoring force of the deformed torsion spring 450 drives the support rod 430 back to a state perpendicular to the connecting frame 330, so as to ensure that the support rod 430 can always provide support for the wind turbine blades.

[0060] like Fig. 9 As shown, the cutting mechanism 500 includes a gantry 510 located at the same end of the two rails 210 , and the gantry 510 is provided with a saw blade 520 on a side close to the rails 210 .

[0061] Furthermore, a plurality of guide rods 530 are provided on one side of the gantry 510, a mounting frame 540 is slidably connected to the plurality of guide rods 530, the saw blade 520 is rotatably connected to the mounting frame 540, a hydraulic rod 550 is provided on the top of the gantry 510, a fixed part of the hydraulic rod 550 is fixedly connected to the gantry 510, and a movable part of the hydraulic rod 550 is fixedly connected to the mounting frame 540.

[0062] It should be noted that after the wind turbine blade slides out a certain length from the bottom of the saw blade 520, the motor driving the saw blade 520 is started, and the motor drives the saw blade 520 to rotate. At this time, the movable part of the hydraulic rod 550 drives the mounting frame 540 to slide downward along the guide rod 530 to complete the cutting of the wind turbine blade.

[0063] In summary, the working principle of the present invention is as follows:

[0064] First, separate the upper and lower support rods 430, place the two sides of the wind turbine blade between the upper and lower locking clamps 310, and then fix the two sides of the wind turbine blade with bolts 320, waiting for the saw blade 520 to cut it from the top of the blade.

[0065] Next, after the power of the motor (a servo motor is selected, which can rotate forward and backward) is turned on, the motor drives the pulley 230 coaxially connected to its output shaft to rotate, and driven by the friction between the pulley 230 and the track 210, the transfer seat 220 will move along the track 210, thereby driving the wind turbine blade to be cut to move below the saw blade 520. After the wind turbine blade passes the required length of the saw blade 520, the saw blade 520 cuts the blade. Repeat the above operation to achieve continuous cutting of the wind turbine blade.

[0066] In the process that the support rod 430 moves following the transfer seat 220 , if foreign matter appears inside the limiting groove 420 , it will affect the synchronization of the support rod 430 moving following the transfer seat 220 . When the degree of adhesion of foreign matter in the limiting groove 420 is loose (that is, the maximum static friction between the foreign matter and the limiting groove 420 is less than the elastic force of the deformation of the torsion spring 450), the support rod 430 that moves with the transfer seat 220 can expel the foreign matter from the limiting groove 420; when the degree of adhesion of foreign matter in the limiting groove 420 is tight (that is, the maximum static friction between the foreign matter and the limiting groove 420 is greater than the elastic force of the deformation of the torsion spring 450), the bottom of the support rod 430 can jump over the foreign matter and move synchronously with the transfer seat 220. After the top of the support rod 430 rotates and then the bottom of the support rod 430 jumps over the foreign matter, the restoring force of the deformed torsion spring 450 drives the support rod 430 back to a state perpendicular to the connecting frame 330, so as to ensure that the support rod 430 can always provide support for the wind turbine blades.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind turbine blade cutting device, comprising a plurality of sleepers (100) arranged side by side and laid on the ground, characterized in that: A pair of transfer mechanisms (200) are fixedly connected to the top of the sleepers (100), the two transfer mechanisms (200) are perpendicular to the multiple sleepers (100), a locking mechanism (300) is fixedly connected to the top of the two transfer mechanisms (200), a supporting mechanism (400) is provided at the bottom of the center of the locking mechanism (300), one end of the supporting mechanism (400) away from the locking mechanism (300) is slidably connected to the multiple sleepers (100), and a cutting mechanism (500) is provided at the same end of the two transfer mechanisms (200); The locking mechanism (300) is used to fix two sides of the blade to be cut, the two transfer mechanisms (200) are used to drive the blade to move toward the cutting mechanism (500), the cutting mechanism (500) is used to cut the blade, and during the process of the cutting mechanism (500) cutting the blade, the supporting mechanism (400) is used to distribute the squeezing force exerted on the locking mechanism (300); The locking mechanism (300) can balance the synchronization of the two transfer mechanisms (200) when they move, and when the support mechanism (400) follows the movement of the transfer mechanism (200), the support mechanism (400) can discharge and jump over foreign objects located on top of a plurality of sleepers (100), so that the support mechanism (400) always supports the wind turbine blades.

2. The wind turbine blade cutting device according to claim 1 is characterized in that: The transfer mechanism (200) comprises a track (210) fixedly connected to the top of a plurality of sleepers (100), and a transfer seat (220) is slidably connected to the top of the track (210).

3. The wind turbine blade cutting device according to claim 2 is characterized in that: The transfer seat (220) is rotatably connected to a plurality of pulleys (230) inside, and the pulleys (230) are driven by a motor.

4. The wind turbine blade cutting device according to claim 2 is characterized in that: The locking mechanism (300) comprises two pairs of locking clamps (310) fixedly connected to the tops of the two transfer seats (220), the two locking clamps (310) at different heights are fixed by bolts (320), and a connecting frame (330) is fixedly connected between the two locking clamps (310) at the same height.

5. The wind turbine blade cutting device according to claim 4 is characterized in that: The support mechanism (400) comprises a rotating bolt (410) and a limiting groove (420); the rotating bolt (410) is fixedly connected to a connecting frame (330) located below; the limiting groove (420) is arranged on the top of a plurality of sleepers (100); a support rod (430) is arranged between the rotating bolt (410) and the limiting groove (420); one end of the support rod (430) is rotatably connected to the rotating bolt (410); and one end of the support rod (430) away from the rotating bolt (410) is slidably connected to the limiting groove (420).

6. The wind turbine blade cutting device according to claim 5, characterized in that: The two ends of the rotating bolt (410) that are far away from each other are each provided with a limiting ring (440), and the interior of the two limiting rings (440) is provided with a torsion spring (450), the inner ring of the torsion spring (450) is fixedly connected to the outer ring of the rotating shaft at the top of the support rod (430), and the outer ring of the torsion spring (450) is fixedly connected to the inner ring of the corresponding limiting ring (440).

7. The wind turbine blade cutting device according to claim 2, characterized in that: The cutting mechanism (500) comprises a gantry (510) located at the same end of two rails (210), and a saw blade (520) is provided on a side of the gantry (510) close to the rails (210).

8. The wind turbine blade cutting device according to claim 7, characterized in that: A plurality of guide rods (530) are provided on one side of the gantry (510), a mounting frame (540) is slidably connected to the plurality of guide rods (530), the saw blade (520) is rotatably connected to the mounting frame (540), a hydraulic rod (550) is provided on the top of the gantry (510), a fixed portion of the hydraulic rod (550) is fixedly connected to the gantry (510), and a movable portion of the hydraulic rod (550) is fixedly connected to the mounting frame (540).

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