End surface processing device for wind turbine blades with embedded bolts

Abstract

The present invention provides an end surface processing device for pre-embedded bolt wind turbine blades, comprising a rotating assembly and a milling assembly; the rotating assembly comprises a rotating arm, a center disk and telescopic legs; the rotating arm is rotatably arranged at the center of the front end surface of the center disk; the telescopic legs are multiple and evenly distributed and annularly arranged on the rear end surface of the center disk; the milling assembly comprises a milling head; the milling head is vertically arranged on the rotating arm, and the working end of the milling head is away from the center disk. The present invention is used to solve the problem of poor end surface flatness and finish when processing the end surface of the pre-embedded bolt of the existing wind turbine blade.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine blade processing devices, and in particular relates to a wind turbine blade end surface processing device with embedded bolts. Background Art

[0002] Wind energy is known as the most promising energy among renewable energy sources due to its environmental protection, low cost and high maturity of manufacturing technology. It has been vigorously developed and applied in countries around the world. As a key component of wind turbines, the cost of wind turbine blades accounts for more than 20% of the entire wind turbine. Its safety and durability are the guarantee for the safe and economical operation of the entire unit.

[0003] With the maturity of wind power manufacturing and operation technology, the power of wind turbines is increasing, and the size of wind turbine blades is increasing. When processing the end face of wind turbine blades with embedded bolts, milling machines are mostly used. However, due to the large size of wind turbine blades, vibration is prone to occur during processing, and the processing efficiency is low. At the same time, the flatness and finish of the end face are poor, which affects the processing quality. Summary of the invention

[0004] In view of the defects of the prior art, the present invention provides an end face processing device for wind turbine blades with embedded bolts, which is used to solve the problem of poor end face flatness and smoothness during the existing wind turbine blade end face processing with embedded bolts.

[0005] The present invention provides a pre-embedded bolt wind turbine blade end surface processing device, comprising a rotating component and a milling component;

[0006] The rotating assembly includes a rotating arm, a center plate and telescopic legs;

[0007] The rotating arm is rotatably arranged at the center of the front end surface of the central disk;

[0008] The telescopic legs are multiple and evenly distributed on the rear end surface of the center plate;

[0009] The milling surface assembly includes a milling head;

[0010] The milling head is vertically arranged on the rotating arm, and the working end of the milling head is away from the center disk.

[0011] In the above technical solution, the present invention can also be improved as follows.

[0012] The preferred technical solution has the additional technical feature that the telescopic leg comprises a first telescopic cylinder and a leg, the fixed end of the first telescopic cylinder is fixedly connected to the rear end of the center plate, and the telescopic end of the first telescopic cylinder is connected to the leg.

[0013] The preferred technical solution has the additional technical feature that it also includes a flipping and clamping assembly, which includes a flipping cylinder, a support block, a second telescopic cylinder and a clamping claw. A mounting frame is provided on the side end of the leg away from the center disk, and the flipping cylinder is fixedly arranged in the mounting frame. There are two support blocks and they are symmetrically fixed on the two flipping ends of the flipping cylinder. There are two second telescopic cylinders and they are vertically fixed on the two support blocks respectively. The two ends of the clamping claw are respectively fixedly connected to the telescopic ends of the two second telescopic cylinders.

[0014] The preferred technical solution has the additional technical feature that a vertical block is vertically fixed on the upper end of each support block, and the two ends of the clamping jaws are respectively connected to the vertical block by linear slide rails.

[0015] The preferred technical solution has the additional technical feature that a sleeve is provided at one end of the support block close to the flip cylinder, and the sleeve is fixedly sleeved with the rotating end of the flip cylinder.

[0016] The preferred technical solution has the additional technical feature that the lower end of the clamping jaw is concave to form a groove, and an anti-slip gasket is provided in the groove.

[0017] The preferred technical solution has the additional technical feature that a lifting pipe is vertically provided on the center plate, and a lifting hole is provided at the upper end of the lifting pipe.

[0018] The preferred technical solution has the additional technical feature that it also includes a milling surface positioning component, wherein a milling surface positioning component is provided at the side end of the lifting tube, two milling surface positioning components are symmetrically provided at the lower end of the rotating arm, and the three milling surface positioning components are arranged in a cocircle.

[0019] The preferred technical solution has the additional technical feature that the milling surface positioning assembly includes a fixed plate, a third telescopic cylinder and a positioning plate, the fixed plate is fixedly arranged on the side end of the lifting tube or the lower end of the swing arm, the fixed end of the third telescopic cylinder is fixedly connected to the positioning plate, and the telescopic end of the third telescopic cylinder is connected to the positioning plate.

[0020] The preferred technical solution has the additional technical feature that the milling head is a right-angle milling head, and there are two milling heads that are vertically arranged on the upper end surface of the rotating arm in a left-right symmetrical manner.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a rotating assembly and a milling assembly, lifts the entire device by a crane and moves it to the end face of the wind turbine blade root, extends a number of telescopic legs to tighten the blade, and forms a whole with the blade, then starts the milling head, rotates the rotating arm at the same time, drives the milling head to process the end face of the wind turbine blade root, and after the processing is completed, the device can be removed from the wind turbine blade by the crane. The present invention has a novel structure and is easy to operate. When processing the end face of the wind turbine blade root, it can ensure good end face flatness and finish. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0023] Figure 1 It is a structural schematic diagram of a pre-embedded bolt wind turbine blade end surface processing device according to Example 1 of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the flip clamping assembly of Example 1 of the present invention.

[0025] Figure 3 It is a structural schematic diagram of a pre-embedded bolt wind turbine blade end surface processing device according to Example 2 of the present invention.

[0026] Figure 4 It is a schematic diagram of the support, dual-axis hydraulic motor, chain frame and hanging plate structure of Example 2 of the present invention.

[0027] Figure 5 It is a schematic diagram of the installation structure of the base, the adjustment base and the support base of Example 2 of the present invention.

[0028] Figure 6 It is a top view of the installation structure of the base, adjustment base and support base of Example 2 of the present invention.

[0029] Figure 7 It is a schematic structural diagram of the shock absorbing assembly of Example 2 of the present invention.

[0030] In the figure, the meanings of each mark are as follows:

[0031] 1. Rotating assembly; 11. Rotating arm; 12. Center plate; 121. Lifting tube; 122. Lifting hole; 13. Telescopic legs; 131. First telescopic cylinder; 132. Legs; 2. Milling assembly; 3. Turnover clamping assembly; 31. Turnover cylinder; 32. Support block; 321. Vertical block; 322. Sleeve; 33. Second telescopic cylinder; 34. Clamping claw; 341. Anti-skid pad; 4. Milling positioning assembly; 41. Fixing plate; 42. Third telescopic cylinder Cylinder; 43. Positioning plate; 5. Load-bearing assembly; 51. Load-bearing platform; 511. Bracket; 512. Dual-axis hydraulic motor; 513. Chain rack; 514. Hanging plate; 515. First horizontal slide rail; 52. Base; 521. Second horizontal slide rail; 53. Adjustment seat; 54. Support seat; 541. Inclined slide rail; 542. First seat body; 543. Second seat body; 6. Shock-absorbing assembly; 61. Shock-absorbing frame; 62. Silicone sleeve; 63. Straight rod. DETAILED DESCRIPTION

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given and described in detail as follows:

[0033] Example 1

[0034] See also Figure 1 to Figure 2 , this embodiment provides a pre-embedded bolt wind turbine blade end surface processing device, including a rotating component 1 and a milling component 2;

[0035] The rotating assembly 1 comprises a rotating arm 11, a center plate 12 and telescopic legs 13;

[0036] The rotating arm 11 is rotatably arranged at the center of the front end surface of the central disk 12;

[0037] There are four telescopic legs 13 evenly arranged on the rear end surface of the center plate 12;

[0038] The milling surface assembly 2 includes a milling head;

[0039] The milling head is vertically arranged on the rotating arm 11 , and the working end of the milling head faces away from the center disk 12 .

[0040] In this embodiment, a flip clamping assembly 3 and a milling assembly 2 are provided, and the device is hoisted to the root end surface of the wind turbine blade by a crane. The four telescopic legs 13 are extended to tighten the blade and form a whole with the blade. Then the milling head is started and the rotating arm 11 is rotated at the same time. A driving motor (not shown) can be installed on the center disk 12. The output end of the driving motor is connected to the middle driving part of the rotating arm 11. The rotation of the motor drives the rotating arm 11 to rotate, and finally drives the milling head to rotate, thereby realizing the processing of the root end surface of the wind turbine blade.

[0041] The driving motor in this embodiment may also be replaced by a rotary hydraulic cylinder.

[0042] See also Figure 1 The telescopic leg 13 shown includes a first telescopic cylinder 131 and a leg 132 , wherein the fixed end of the first telescopic cylinder 131 is fixedly connected to the rear end of the center disk 12 , and the telescopic end of the first telescopic cylinder 131 is connected to the leg 132 .

[0043] By setting a first telescopic cylinder 131 and a support leg 132, the first telescopic cylinder 131 is a hydraulic telescopic cylinder. When the first telescopic cylinder 131 is extended, the support leg 132 is driven to extend outward, and the four support legs 132 are in contact with the root end surface of the wind turbine blade and tighten the blade at the same time, so as to fix the device. After the root end surface of the wind turbine blade is processed, the first telescopic cylinder 131 is retracted, driving the support leg 132 to separate from the root end surface of the wind turbine blade, thereby realizing the separation of the device and the root end surface of the wind turbine blade.

[0044] See also Figure 1 and Figure 2 , also includes a flip clamping assembly 3, the flip clamping assembly 3 includes a flip cylinder 31, a support block 32, a second telescopic cylinder 33 and a clamping claw 34, the side end of the support leg 132 away from the center disk 12 is provided with a mounting frame, the flip cylinder 31 is fixedly arranged in the mounting frame, the support blocks 32 are two and symmetrically fixedly arranged on the two flipping ends of the flip cylinder 31, the second telescopic cylinders 33 are two and vertically fixedly arranged on the two support blocks 32, and the two ends of the clamping claw 34 are respectively fixedly connected to the telescopic ends of the two second telescopic cylinders 33.

[0045] By setting the flip clamping assembly 3, the telescopic legs 13 open the flip cylinder 31 after tightening the blades. Since the support block 32 is set on the rotating end of the flip cylinder 31, the support block 32 can be flipped. The rotation of the support block 32 further drives the clamping jaw 34 to flip. In this embodiment, the flipping angle is 180 degrees. At this time, the clamping jaw 34 is just aligned with the outer end surface of the root of the wind turbine blade. Then the second telescopic cylinder 33 contracts downward, driving the clamping jaw 34 to move downward, and finally pressing the wind turbine blade to achieve rigid fixation of the wind turbine blade, avoid violent shaking of the wind turbine blade and the device during processing, ensure the milling surface feed amount, and improve production efficiency.

[0046] See also Figure 2 A vertical block 321 is vertically fixed on the upper end of each support block 32, and both ends of the clamping jaws 34 are connected to the vertical block 321 by linear slide rails.

[0047] The vertical block 321 is used to increase the stability and reliability of the connection between the support block 32 and the clamp 34. By setting a linear slide rail connection between the clamp 34 and the vertical block 321, the two ends of the clamp 34 are respectively fixedly connected to the slide table of the linear slide rail. During the operation of the second telescopic cylinder 33, the up and down movement of the clamp 34 is more reliable.

[0048] See also Figure 2 A sleeve 322 is provided at one end of the support block 32 close to the flip cylinder 31 , and the sleeve 322 is fixedly sleeved with the rotating end of the flip cylinder 31 .

[0049] The sleeve 322 is provided to ensure that the support block 32 can be stably connected to the flip cylinder 31. When the sleeve 322 in this embodiment is sleeved on the rotating end of the flip cylinder 31, the sleeve 322 is connected to the flip cylinder 31 by bolts.

[0050] See also Figure 2 The lower end of the clamping jaw 34 is concave to form a groove, and an anti-slip pad 341 is provided in the groove.

[0051] The anti-skid pad 341 is provided to prevent the clamping jaw 34 from sliding during clamping.

[0052] See also Figure 1 A lifting pipe 121 is vertically provided on the center plate 12 , and a lifting hole 122 is provided at the upper end of the lifting pipe 121 .

[0053] The provided lifting pipe 121 facilitates the lifting of the entire device by a crane.

[0054] See also Figure 1 , and also includes a milling surface positioning component 4. The side end of the lifting tube 121 is provided with a milling surface positioning component 4, and the lower end of the rotating arm 11 is symmetrically provided with two milling surface positioning components 4, and the three milling surface positioning components are arranged in a cocircle.

[0055] When the hoisting device reaches the end face of the wind turbine blade root, the hoisting device passes through the milling surface positioning component 4, and the milling surface positioning component 4 conflicts with the end face of the wind turbine blade root, thereby preventing the device from moving when the hoisting device continues to move forward.

[0056] See also Figure 1 The milling surface positioning assembly 4 includes a fixed plate 41, a third telescopic cylinder 42 and a positioning plate 43. The fixed plate 41 is fixedly arranged on the side end of the lifting tube 121 or the lower end of the swing arm 11. The fixed end of the third telescopic cylinder 42 is fixedly connected to the positioning plate 43. The telescopic end of the third telescopic cylinder 42 is connected to the positioning plate 43.

[0057] The third telescopic cylinder 42 is extended to drive the positioning plate 43 to extend forward and contact the root end surface of the wind turbine blade, thereby preventing the device from moving when the crane continues to move forward, thereby achieving the initial positioning of the device.

[0058] The telescopic ends of the three third telescopic cylinders 42 in this embodiment are all located on a circle.

[0059] See also Figure 1 The milling head is a right-angle milling head, and there are two milling heads that are vertically arranged on the upper end surface of the rotating arm 11 in a left-right symmetrical manner.

[0060] The two milling heads are set to work simultaneously, which can improve the milling efficiency, and the right-angle milling head is an existing structure.

[0061] In this embodiment, another linear slide rail can be installed on the rotating arm 11, and the milling head can be set on the slide of the linear slide rail. After one circular ring is processed, the slide rail moves, driving the two milling heads to move, thereby processing another circular ring, thereby increasing the working range of the milling head.

[0062] Example 2

[0063] The difference between this embodiment and embodiment 1 is: Figures 3 to 7The present embodiment further comprises a bearing assembly 5, the bearing assembly 5 comprising a bearing platform 51, a base 52, an adjustment seat 53 and a support seat 54; a bracket 511 is provided at the upper end of the bearing platform 51, a double-shaft hydraulic motor 512 and a chain frame 513 are fixedly provided at the upper end of the bracket 511, the chain frame 513 is two and symmetrically connected to the two output ends of the double-shaft hydraulic motor 512, the chain is two and vertically arranged on the left and right sides of the double-shaft hydraulic motor 512, one of the chains is The first end of the chain is connected to the corresponding chain frame 513, and the other end of the chain is connected to the lifting plate 514. The lifting plate 514 is provided with a hook, and the hook is connected to the lifting hole 122. The upper end of the support platform 51 is horizontally arranged with a plurality of first horizontal slide rails 515; the base 52 is horizontally arranged on a slide platform of the plurality of first horizontal slide rails 515, and the upper end of the base 52 is symmetrically provided with second horizontal slide rails 521; the adjustment seat 53 is two and is respectively arranged on the two first horizontal slide rails. The support seat 54 is provided with two horizontal slide rails 521; the support seat 54 is provided with two and is arranged on the upper side of the two adjustment seats 53 in an inclined manner; the upper end surface of the adjustment seat 53 is an inclined surface and is inclined toward the middle of the base 52; the lower end of the support seat 54 is provided with an inclined slide rail 541; the upper end of the adjustment seat 53 is fixedly connected with the slide of the corresponding inclined slide rail 541; the support seat 54 includes a first seat body 542 and a second seat body 543; the lower end of the first seat body 542 is provided with the second horizontal slide rail 541; Smooth rail 521, the upper end of the first seat body 542 has an obtuse-angled bevel end, the second seat body 543 includes two right-angled triangle vertical plates, the two vertical plates are vertically arranged at the horizontal end surface of the upper end of the first seat body 542, the right-angled sides of the two vertical plates are fixedly connected, the beveled sides of the two vertical plates are both downward arc-shaped concave surfaces, and a bracket is connected between the two first seat bodies 542, and the upper end surface of the bracket is higher than or flush with the lowermost end surface of the bevel end of the first seat body 542.

[0064] This embodiment is provided with a bearing platform 51, a base 52, an adjustment seat 53 and a support seat 54. By placing the wind turbine blades directly on the two support seats 54, the two support seats 54 are used to bear the wind turbine blades. The sliding of the slides on the first horizontal slide rails 515 can drive the base 52 to slide on the bearing platform 51 and then slide the adjustment seat 53. When the two adjustment seats 53 slide in the same direction, the two support seats 54 can be driven to move in the same direction, thereby realizing the left or right movement of the wind turbine blades. When the two adjustment seats 53 move close to or away from each other, the two support seats 54 can be driven to rise or fall in the vertical direction, thereby driving the wind turbine blades to rise or fall in the vertical direction. In this embodiment, the slide of the second horizontal slide rail 521 slides left and right, thereby driving the two support seats 54 to move left or right. The inclined slide rail 541 is provided so that the two adjustment seats 53 can slide on the support seat 54. Since the inclined slide rail 541 is inclined, the adjustment seat 53 will make the support seat 54 rise or fall during the sliding process relative to the support seat 54. After the position of the wind turbine blade is adjusted, the hook is hooked on the lifting hole 122, and then the double-axis hydraulic motor 512 is turned on. The double-axis hydraulic motor 512 drives the chain to rise during the rotation, so that the rotating assembly 1 is lifted upward and aligned with the wind turbine blade, and the milling head is aligned with the area to be milled of the wind turbine blade to start milling.

[0065] See also Figure 3 and Figure 7 This embodiment also includes a shock absorbing component 6, which includes a shock absorbing frame 61, a silicone sleeve 62 and a straight rod 63. The shock absorbing frame 61 is two and is arranged opposite to each other up and down. A cylinder is integrally formed at the top corner of the shock absorbing frame 61. The silicone sleeve 62 is vertically inserted in each cylinder, and the two silicone sleeves 62 opposite to each other up and down are connected by the straight rod 63.

[0066] By hoisting the support platform 51 on the upper shock-absorbing frame 61, the design of the upper and lower double silicone sleeves 62 can damp the vibration, and can play a good shock-absorbing role even when the milling head is in the cutting process or the chain is in the lifting process.

[0067] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory. Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limitations on the present invention, and those of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An end face processing device for embedded bolts of wind turbine blades, characterized in that: it includes a rotating assembly and a milling surface assembly; the rotating assembly includes a rotating arm, a central disk and telescopic legs; the rotating arm is rotatably arranged at the center of the front end face of the central disk; the telescopic legs are multiple and are evenly distributed and arranged on the rear end face of the central disk in a ring shape; the milling surface assembly includes a milling head; the milling head is vertically arranged on the rotating arm, and the working end of the milling head faces away from the central disk; the shown telescopic leg includes a first telescopic cylinder and a leg, the fixed end of the first telescopic cylinder is fixedly connected to the rear end of the central disk, and the telescopic end of the first telescopic cylinder is connected to the leg; it further includes a flipping and clamping assembly, the flipping and clamping assembly includes a flipping cylinder, a support block, second telescopic cylinders and clamping jaws, an installation frame is provided at the side end of the leg away from the central disk, the flipping cylinder is fixedly arranged in the installation frame, there are two support blocks and they are symmetrically and fixedly arranged on the two flipping ends of the flipping cylinder, there are two second telescopic cylinders and they are respectively vertically and fixedly arranged on the two support blocks, and the two ends of the clamping jaw are respectively fixedly connected to the telescopic ends of the two second telescopic cylinders; After the telescopic legs tighten the blade, the flipping cylinder is opened, the support block is arranged at the rotating end of the flipping cylinder, so that the support block can flip, the rotation of the support block drives the clamping jaw to flip, the clamping jaw aligns with the outer end face of the root of the wind turbine blade, the second telescopic cylinder contracts downward, driving the clamping jaw to move downward, and finally pressing the wind turbine blade to achieve rigid fixation of the wind turbine blade; A vertical block is vertically and fixedly arranged at the upper end of each support block, and the two ends of the clamping jaw are respectively connected by a linear slide rail with the vertical block; A sleeve is provided at one end of the support block close to the flipping cylinder, and the sleeve is fixedly sleeved on the rotating end of the flipping cylinder; The lower end of the clamping jaw is concave to form a groove, and an anti-slip gasket is arranged in the groove; A lifting pipe is vertically arranged on the central disk, and a lifting hole is provided at the upper end of the lifting pipe; It further includes a milling surface positioning assembly, a milling surface positioning assembly is provided at the side end of the lifting pipe, and two milling surface positioning assemblies are symmetrically arranged on the left and right at the lower end of the rotating arm, and the three milling surface positioning assemblies are arranged concentrically; The milling surface positioning assembly includes a fixing plate, a third telescopic cylinder and a positioning plate, the fixing plate is fixedly arranged at the side end of the lifting pipe or the lower end of the rotating arm, the fixed end of the third telescopic cylinder is fixedly connected to the positioning plate, and the telescopic end of the third telescopic cylinder is connected with the positioning plate.

2. The end face processing device for embedded bolts of wind turbine blades according to claim 1, characterized in that: the milling head is a right-angle milling head, and there are two milling heads and they are symmetrically and vertically arranged on the upper end face of the rotating arm on the left and right.

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