CN111195858A

CN111195858A - Wind-powered electricity generation blade root terminal surface equipment of polishing

Info

Publication number: CN111195858A
Application number: CN201811289773.0A
Authority: CN
Inventors: 丁国彪; 王爱忠; 王战坚; 齐长峰; 韩瑞峰; 张亚涛; 刘忠俊
Original assignee: Sinomatech Wind Power Blade Co Ltd
Current assignee: Sinomatech Wind Power Blade Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-05-26

Abstract

The invention provides a grinding device for the end face of a blade root of a wind power blade. The frame comprises a first fixing plate; the supporting mechanism is used for supporting in the blade root. The supporting mechanism comprises at least three supporting rods and a turntable. At least three support rods are slidably arranged on the first fixing plate, one end of each support rod is provided with a sliding part, and the other end of each support rod is used for abutting against the blade root of the blade; the turntable is arranged on the first fixing plate, the turntable is provided with guide parts the number of which is the same as that of the support rods, and the sliding parts can move along the guide parts; when the turntable rotates, the sliding part gradually moves away from or approaches to the rotation center of the turntable along the guide part.

Description

Wind-powered electricity generation blade root terminal surface equipment of polishing

Technical Field

The invention relates to grinding equipment in general, in particular to grinding equipment for the end face of a blade root of a wind power blade.

Background

Most of wind power blades are formed by vacuum casting by using glass fiber reinforced epoxy resin as a main material. In the blade cutting process, due to the fact that the material contains the cloth layer, the cut part of the blade cannot be guaranteed to be neat, and the end face of the root of the blade is uneven.

In the prior art, a grinding device is adopted to grind the end face of the root of the cut blade. The triangular support frame is often adopted in the existing grinding equipment to support the grinding equipment in the inner circle of the blade, but in the installation process, the length of each supporting rod needs to be adjusted independently to adapt to the diameter of the inner circle of the blade. Thus, the mounting or dismounting time is greatly increased. In addition, because three bracing pieces are not synchronous adjustment, can cause the length overlength of a bracing piece or short for the rotation center of equipment of polishing is not coincident with the interior round axial lead of blade, still need to adjust repeatedly, and efficiency is not high.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The invention mainly aims to overcome at least one defect in the prior art and provide wind power blade root end surface grinding equipment to solve the problems that a supporting mechanism in the prior art is long in installation time and a rotating center is not coincident with an inner circle axial lead of a blade.

In order to achieve the purpose, the invention adopts the following technical scheme:

according to one aspect of the invention, the grinding equipment for the end face of the blade root of the wind power blade comprises a machine frame and a supporting mechanism. The frame comprises a first fixing plate; the support mechanism is used for supporting in the blade root. The supporting mechanism comprises at least three supporting rods and a turntable. At least three support rods are slidably arranged on the first fixing plate, one end of each support rod is provided with a sliding part, and the other end of each support rod is used for abutting against the blade root of the blade; the rotary table is arranged on the first fixing plate, the rotary table is provided with guide parts with the same number as the support rods, and the sliding part can move along the guide parts; when the turntable rotates, the sliding part gradually gets away from or approaches to the rotation center of the turntable along the guide part.

According to an embodiment of the present invention, the guide portion is an arc-shaped waist hole, the sliding portion is a pressure roller, the pressure roller is disposed in the arc-shaped waist hole, and the pressure roller is rotatably connected to the support rod.

According to an embodiment of the present invention, an installation portion is disposed at an end of each of the support rods away from the sliding portion, and at least one rubber pad is disposed on the installation portion.

According to an embodiment of the present invention, the number of the support rods is three, and an included angle between two adjacent support rods is 120 degrees.

According to an embodiment of the present invention, the first fixing plate includes a first mounting surface and a second mounting surface that are oppositely disposed, and the at least three support rods and the turntable are mounted on the first mounting surface.

According to an embodiment of the present invention, the supporting mechanism further includes a transmission assembly for driving the turntable to rotate, and the transmission assembly is mounted on the second mounting surface.

According to an embodiment of the present invention, the supporting mechanism includes a transmission shaft, the transmission shaft penetrates through the first fixing plate, one end of the transmission shaft is fixedly connected to the rotating disc, and the other end of the transmission shaft is in transmission connection with the transmission assembly.

According to an embodiment of the present invention, the transmission assembly includes a lead screw, a lead screw base, a rack, and a gear, and further includes a connecting portion, the connecting portion is slidably mounted on the second mounting surface, the gear is fixedly connected to the transmission shaft, the rack is fixedly connected to the connecting portion, and the lead screw base is fixedly connected to the connecting portion.

According to an embodiment of the present invention, the frame includes a second fixing plate disposed opposite to the first fixing plate, and a plurality of connecting rods are disposed between the two fixing plates.

According to an embodiment of the invention, two of the fixing plates are discs.

According to the technical scheme, the wind power blade root end surface grinding equipment has the advantages and positive effects that:

compared with the prior art, the wind power blade root end surface grinding equipment provided by the invention can drive at least three support rods to synchronously expand outwards by rotating the rotary table, so that the installation time of the support mechanism is effectively saved. Simultaneously, the shrinkage and the expansion are uniformly controlled by at least three support rods, the shrinkage and the expansion are the same in length, the length of a single support rod is prevented from being too long or too short, and the coincidence of the rotation center of the polishing equipment and the axial lead of the inner circle of the blade is ensured.

In addition, be provided with the cushion between bracing piece and the interior circle of blade, because the cushion is continuously compressed, the inside elastic potential energy conversion of cushion is for the cushion to the holding power of circle in the blade for supporting mechanism's support stability is more firm.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 illustrates a perspective view of a wind turbine blade root face grinding apparatus in accordance with one embodiment of the present invention;

FIG. 2 shows a schematic view of a swing mechanism in an embodiment of the present invention;

FIG. 3 illustrates a top view of a grinding mechanism in one embodiment of the present invention;

FIG. 4 illustrates a perspective view of a drive device of the support mechanism in one embodiment of the present invention;

FIG. 5 illustrates a perspective view of a support bar and turntable of the support mechanism in one embodiment of the present invention;

fig. 6 shows a schematic view of a wind turbine blade root end surface grinding device installed in an inner circle of a wind turbine blade root according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

1. a support mechanism; 11. a support bar; 111. a sliding part; 112. an installation part; 113. a rubber pad; 12. a turntable; 121. a guide portion; 13. locking the nut; 14. a fixed block; 15. a lead screw; 151. a lead screw seat; 16. a connecting portion; 17. a gear; 171. a rack; 18. a drive shaft; 2. a swing mechanism; 21. an annular outer ring; 211. screw holes; 22. an annular inner ring; 221. internal teeth; 23. a centering shaft; 24. a shaft seat; 3. a polishing mechanism; 31. rotating the large arm; 32. connecting ribs; 33. sealing the cover; 34. a polishing unit; 341. polishing the motor; 342. a grinding wheel; 343. a feeding module; 3431. a feed motor; 3432. a feed screw; 3433. a slider; 4. a frame; 41. a second fixing plate; 411. a third mounting surface; 412. a fourth mounting surface; 42. a first fixing plate; 421. a first mounting surface; 422. a second mounting surface; 43. a connecting rod; 5. a rotation driving mechanism; 51. a driving gear; 52. a rotary motor; 53. a drive shaft; 6. and (4) the inner circle of the blade.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "top", "bottom", and the like, are also intended to have similar meanings. The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," "third," and "fourth," etc. are used merely as labels, and are not limiting as to the number of their objects.

In the following, some embodiments of the invention will be described in detail with reference to the accompanying drawings, and features of the embodiments described below may be combined with each other without conflict.

Referring to fig. 1, the grinding apparatus for the end surface of the blade root of the wind turbine blade provided by the invention includes a frame 4, a supporting mechanism 1, a rotating mechanism 2 and a grinding mechanism 3. The frame 4 comprises a first fixing plate 42 and the support means 1 are intended to be supported inside the inner circle 6 of blades.

Referring to fig. 4, the supporting mechanism 1 includes at least three supporting rods 11 and a rotating disc 12. In other embodiments of the present invention, when the diameter of the inner circle 6 of the blade is large, the number of the support rods 11 may also be four, five or more, in order to ensure the support stability of the support mechanism 1, and a person skilled in the art may determine the number of the support rods 11 according to design requirements. For the sake of convenience of the following description, three support rods 11 are schematically illustrated.

The three support rods 11 are slidably mounted on the first fixing plate 42. Specifically, the first fixing plate 42 is provided with fixing blocks 14 having the same number as the supporting rods 11, the fixing blocks 14 are provided with grooves, the supporting rods 11 are provided with slide rails capable of being accommodated in the grooves, and the supporting rods 11 slide in the grooves in an outward or inward direction by sliding the slide rails in the grooves. The outward direction refers to the direction of the support rod 11 away from the center of the circle 6 of the blade inner circle, and the inward direction refers to the direction of the support rod 11 close to the center of the circle 6 of the blade inner circle. Of course, the supporting rod 11 may also be provided with a groove, and the fixing block 14 is provided with a slide rail capable of being accommodated in the groove.

It should be understood that a person skilled in the art can use a common method in the art to slidably mount the support rod 11 on the first fixing plate 42, for example, the support rod 11 is provided with a long through hole, and the fixing block 14 is provided with a boss which can pass through the long through hole and move along the long through hole.

With reference to fig. 4, one end of each support rod 11 is provided with a sliding portion 111, and the other end is used for abutting against the blade root. The rotary table 12 is mounted on the first fixing plate 42, and in the present embodiment, the rotary table 12 and the three support rods 11 are mounted on the same side of the first fixing plate 42. The turntable 12 is provided with the same number of guide portions 121 as the support rods 11, and in the present embodiment, the turntable 12 is provided with three guide portions 121. When the turntable 12 rotates, the sliding portion 111 may move along the guide portion 121, and the sliding portion 111 gradually moves away from or closer to the rotation center of the turntable 12 along the guide portion 121. In other words, the distance between the point of the sliding part 111 on the moving track of the guiding part 121 and the rotation center of the turntable 12 is gradually increased or decreased, and further, the difference between the distance between the two points on the moving track and the rotation center of the turntable 12 determines the sliding distance of the support rod 11.

The supporting action of the supporting mechanism 1 of the present invention is specifically that when the turntable 12 rotates, the guide portion 121 drives the sliding portion 111 to move within the track range thereof, so as to drive the supporting rod 11 to slidably move outwards until abutting against the inner circle 6 of the blade. The retracting action of the support mechanism 1 is the opposite of the supporting action and will not be described in detail here.

Compared with the prior art, the grinding equipment for the end face of the blade root of the wind power blade can drive the three support rods 11 to synchronously expand outwards by rotating the rotary table 12, and effectively saves the installation time of the support mechanism 1. Meanwhile, the three support rods 11 uniformly control contraction and expansion, the contraction length is the same as the expansion length, the overlong or overlong length of a single support rod 11 is prevented, and the coincidence of the rotation center of the polishing equipment and the axis line of the inner circle 6 of the blade is ensured.

Further, as shown in fig. 4, the guide portion 121 may be an arc-shaped waist hole, and the sliding portion 111 may be a pressure roller rotatably coupled to the support bar 11. After rotating the carousel 12, the pressure roller can roll along arc waist hole for carousel 12 drive bracing piece 11 is more smooth and easy, prevents that unexpected jamming from appearing.

Of course, a person skilled in the art can also use a common manner in the art to enable the sliding portion 111 to move along the guiding portion 121, for example, the above-mentioned sliding manner of the supporting rod 11 and the fixing block 14, which is not described herein again.

Further, as shown in fig. 4, an installation part 112 is disposed at an end of each support rod 11 away from the sliding part 111, and at least one rubber pad 113 is disposed on the installation part 112. It should be understood that the specific structure of the mounting portion 112 may be selected by one skilled in the art according to specific design requirements, and is not particularly limited herein.

When the three support rods 11 abut against the inner circle 6 of the blade, the rubber pad 113 is arranged between the mounting part 112 and the inner circle 6 of the blade, and because the rubber pad 113 is continuously compressed, the elastic potential energy inside the rubber pad 113 is converted into the supporting force of the rubber pad 113 to the inner circle 6 of the blade, so that the supporting stability of the supporting mechanism 1 is firmer.

Further, in this embodiment, the number of the support rods 11 may be three, and an included angle between two adjacent support rods 11 is 120 degrees. The three support rods 11 are uniformly arranged on the first fixing plate 42, so that the support force given to the inner circle 6 of the blade by the support rods 11 is uniform and stable.

Further, the first fixing plate 42 includes a first mounting surface 421 and a second mounting surface 422 which are oppositely disposed, and at least three support rods 11 and the rotating disc 12 are mounted on the first mounting surface 421.

Further, the supporting mechanism 1 further includes a transmission assembly for driving the turntable 12 to rotate, and the transmission assembly is mounted on the second mounting surface 422. The supporting mechanism 1 further comprises a transmission shaft 18, wherein the transmission shaft 18 penetrates through the first fixing plate 42, one end of the transmission shaft 18 is fixedly connected to the rotating disc 12, and the other end of the transmission shaft is in transmission connection with the transmission assembly. Specifically, the turntable 12 may be mounted on a bushing and secured to the drive shaft 18 by a retaining nut 13.

Further, as shown in fig. 5, the transmission assembly includes a lead screw 15, a lead screw seat 151, a rack 171 and a gear 17, the transmission assembly further includes a connecting portion 16, the connecting portion 16 is slidably mounted on the second mounting surface 422, the gear 17 is fixedly connected to the transmission shaft 18, the rack 171 is fixedly connected to the connecting portion 16, and the lead screw seat 151 is fixedly connected to the connecting portion 16.

Specifically, the motor drives the screw rod 15 to rotate, the screw rod 15 drives the screw rod seat 151 to move transversely, the screw rod seat 151 drives the connecting portion 16 to slide on the second mounting surface 422 of the first fixing plate 42, and then drives the rack 171 to move transversely, so that the driving gear 17 rotates and finally drives the rotation of the turntable 12. After the support rod 11 is abutted to the inner circle 6 of the blade, the lead screw 15 has a self-locking function, so that the support mechanism 1 forms effective mechanical self-locking, and the support rod 11 is prevented from being accidentally contracted.

Further, as shown in fig. 1, the frame 4 further includes a second fixing plate 41 disposed opposite to the first fixing plate 42, and a plurality of connecting rods 43 are disposed between the first fixing plate 42 and the second fixing plate 41.

Further, the first fixing plate 42 and the second fixing plate 41 are circular, and the diameters of the two fixing plates are equal. The mechanism design makes the two discs more convenient to store and transport. Meanwhile, compared with other shapes, the disc is easier to process, and the processing difficulty is reduced, so that the processing cost is reduced.

Further, as shown in fig. 1 and 2, the swing mechanism 2 of the wind turbine blade root end surface grinding device of the present invention is mounted on the frame 4. The turning mechanism 2 includes an annular outer ring 21 and an annular inner ring 22 disposed within the annular outer ring 21 and concentrically disposed with the annular outer ring 21. The annular outer ring 21 is fixedly connected to the frame 4, for example, a plurality of screw holes 211 may be formed at a circumferential edge of the annular outer ring 21, and screws pass through the screw holes 211 to fix the annular outer ring 21 to the frame 4. The annular inner ring 22 has a ring of internal teeth 221 and is rotatably connected to the annular outer ring 21, and for example, a plurality of rolling bodies, which may be balls, rollers, or the like, may be provided between the annular inner ring 22 and the annular outer ring 21.

The rotary drive mechanism 5 is fixedly connected to the frame 4, and the rotary drive mechanism 5 includes a drive gear 51 that meshes with the internal teeth 221 of the annular inner ring 22. The driving gear 51 can drive the annular inner ring 22 to rotate through the internal teeth 221.

Further, at the center of the annular outer ring 21 and the annular inner ring 22, a centering shaft 23 is provided, one end of the centering shaft 23 is rotatably connected to the second fixing plate 41, and the other end is fixedly connected to the grinding mechanism 3, for example, by welding.

Specifically, the connection between the centering shaft 23 and the second fixing plate 41 may be provided with a shaft seat 24, and the shaft seat 24 is fixedly connected to the second fixing plate 41, for example, by a screw connection. The centering shaft 23 passes through the shaft seat 24 and is rotatably connected to the third mounting surface 411 of the second fixing plate 41. Of course, other connection means may be used, and will not be described in detail here.

During the grinding process, on the one hand, the centering shaft 23 ensures that the rotation center of the large rotating arm 31 coincides with the axis of the inner circle 6 of the blade at all times. On the other hand, the centering shaft 23 can reduce the acting force between the annular inner ring 22 and the driving gear 51, and avoid the abrasion of the gears at the meshing position. On the other hand, when the driving main wheel and the annular inner ring 22 work for a long time, the gears at the meshing position may be accidentally worn, and the large rotating arm 31 is suddenly inclined. When gear wear occurs, the centering shaft 23 can prevent the rotating large arm 31 from suddenly inclining, and the end face of the blade root is seriously unqualified.

Further, the above-mentioned revolving driving mechanism 5 further includes a revolving motor 52 mounted on the fourth mounting surface 412, the revolving motor 52 transmits power to the driving gear 51 through the driving shaft 53, and the driving gear 51 is located on the third mounting surface 411 and meshed with the internal teeth 221 of the annular inner ring 22. In the polishing process, the driving gear 51 transmits power to the annular inner ring 22, and the power is transmitted from the pinion to the large gear ring, so that the rotating speed of the annular inner ring 22 is stable and slow, and the polishing quality of the polishing mechanism 3 is further ensured.

Further, the grinding mechanism 3 includes a rotating large arm 31 and a grinding unit 34 at an end of the rotating large arm 31. The rotation center of the large rotating arm 31 is aligned with the axis of the inner circle of blades 6, in other words, the distance between the grinding unit 34 and the rotation center of the large rotating arm 31 is equal to the radius of the inner circle of blades 6. In addition, one end of the fixed shaft 23 coincides with the center of the annular inner ring 22, and the other end of the fixed shaft 23 is fixedly connected to the center of the large rotating arm 31, so that the rotating center of the large rotating arm 31, the centers of the fixed shaft 23 and the annular inner ring 22, and the axis of the inner blade circle 6 coincide.

Further, as shown in fig. 3, a cover 33 and a connecting rib 32 are further provided between the rotating arm 31 and the annular inner ring 22. The cover 33 is fixedly connected to the annular inner ring 22, for example by means of screws. The centering shaft 23 passes through the cover 33 and is connected to the center of the rotating arm 31.

In the present embodiment, the specific number of the connecting ribs 32 is not particularly limited, and for convenience of description, two connecting ribs 32 are schematically described.

Two connecting ribs 32 are provided between the cover 33 and the rotating arm 31, and both ends of the connecting ribs 32 are fixed to the cover 33 and the rotating arm 31, respectively, by welding, for example. The two connecting ribs 32 may be equidistant from the centering shaft 23. A sealing cover 33 is added between the annular inner circle and the large rotating arm 31, so that external dust can be prevented from entering the rotating mechanism 2 and influencing the normal operation of the rotating mechanism 2.

Further, the number of the sharpening units 34 of the present invention may be two, respectively provided at both end portions of the large rotating arm 31. The two grinding units 34 ensure that the weights of the two ends of the large rotating arm 31 are the same, and further ensure the dynamic balance effect of the large rotating arm 31 in the working process.

Specifically, each grinding unit 34 includes a grinding motor 341, a grinding wheel 342, and a feeding module 343. The grinding motor 341 drives the grinding wheel 342 to grind, and the grinding wheel 342 is gradually close to the end surface of the blade root by driving the sliding block 3433. The feeding module 343 includes a feeding screw 3432, a sliding block 3433, and a feeding motor 3431, the grinding motor 341 and the grinding wheel 342 are disposed on the sliding block 3433, and the feeding screw 3432 can drive the sliding to move toward or away from the blade.

Specifically, the feeding speed and the feeding distance of the feeding module 343 can be determined by measuring the distance to be polished of the end surface of the blade root, and the feeding motor 3431 drives the feeding screw 3432 to rotate, so as to drive the sliding block 3433 to feed to the end surface of the blade root.

When the wind power blade root end surface grinding equipment provided by the invention is used, as shown in fig. 6, the supporting mechanism 1 is supported inside the inner circle 6 of the blade, the rotating mechanism 2 is connected to the supporting mechanism 1 through the machine frame 4, so that the rotating mechanism 2 is suspended and extends outwards, and the grinding mechanism 3 is connected to the annular inner ring 22 of the rotating mechanism 2. The driving gear 51 drives the annular inner ring 22 to rotate through the internal teeth 221, so as to drive the grinding mechanism 3 to grind along the end face of the blade root. Compared with the transmission mode of a main shaft and a bearing in the prior art, the annular inner ring 22 is rotationally connected with the annular outer ring 21 through the rolling bodies and transmits power to the grinding mechanism 3. Due to the structural design, the annular inner ring 22 and the annular outer ring 21 can bear axial force, radial force and overturning moment at the same time, the dynamic balance effect of the polishing mechanism 3 is ensured, and the polishing quality of the end face of the blade root is effectively improved.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the description. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for carrying out the invention and will enable those skilled in the art to utilize the invention.

Claims

1. The utility model provides a wind-powered electricity generation blade root terminal surface equipment of polishing which characterized in that includes:

a frame including a first fixing plate;

a support mechanism for supporting within the blade root, the support mechanism comprising:

the at least three support rods are slidably arranged on the first fixing plate, one end of each support rod is provided with a sliding part, and the other end of each support rod is used for abutting against the blade root of the blade;

a rotary table installed on the first fixing plate, the rotary table having guide portions the same in number as the support rods, the sliding portion being movable along the guide portions;

when the turntable rotates, the sliding part gradually gets away from or approaches to the rotation center of the turntable along the guide part.

2. The wind turbine blade root end face grinding apparatus as claimed in claim 1, wherein the guide portion is an arc-shaped waist hole, the sliding portion is a pressure roller, the pressure roller is disposed in the arc-shaped waist hole, and the pressure roller is rotatably connected to the support rod.

3. The wind turbine blade root end surface grinding device as claimed in claim 1, wherein an installation part is arranged at one end of each support rod away from the sliding part, and at least one rubber pad is arranged on the installation part.

4. The wind turbine blade root end surface grinding device as claimed in claim 1, wherein the number of the support rods is three, and an included angle between two adjacent support rods is 120 degrees.

5. The wind blade root end face grinding apparatus as defined in any one of claims 1 to 4, wherein the first fixing plate includes a first mounting surface and a second mounting surface which are oppositely arranged, and the at least three support rods and the rotary table are mounted on the first mounting surface.

6. The wind turbine blade root end face grinding apparatus as set forth in claim 5, wherein said support mechanism further comprises a transmission assembly for driving said turntable to rotate, said transmission assembly being mounted on said second mounting surface.

7. The wind turbine blade root end surface grinding device as claimed in claim 6, wherein the support mechanism comprises a transmission shaft, the transmission shaft penetrates through the first fixing plate, one end of the transmission shaft is fixedly connected to the rotary table, and the other end of the transmission shaft is in transmission connection with the transmission assembly.

8. The wind turbine blade root end surface grinding device according to claim 7, wherein the transmission assembly includes a lead screw, a lead screw seat, a rack, and a gear, and further includes a connecting portion slidably mounted on the second mounting surface, the gear is fixedly connected to the transmission shaft, the rack is fixedly connected to the connecting portion, and the lead screw seat is fixedly connected to the connecting portion.

9. The wind turbine blade root end surface grinding device as claimed in any one of claims 1 to 4, wherein the frame comprises a second fixing plate disposed opposite to the first fixing plate, and a plurality of connecting rods are disposed between the two fixing plates.

10. The wind blade root end face grinding apparatus as claimed in claim 9, wherein two of the fixing plates are disks.