CN113976960A - Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator - Google Patents

Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator Download PDF

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Publication number
CN113976960A
CN113976960A CN202111215618.6A CN202111215618A CN113976960A CN 113976960 A CN113976960 A CN 113976960A CN 202111215618 A CN202111215618 A CN 202111215618A CN 113976960 A CN113976960 A CN 113976960A
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CN
China
Prior art keywords
milling cutter
milling
disc
brake disc
driven generator
Prior art date
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Pending
Application number
CN202111215618.6A
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Chinese (zh)
Inventor
王超
刘洪冰
姚鹏
陈超凡
李振国
张永辉
王金生
姜慧韬
崔艳东
师维
腾依海
陈祥召
张大龙
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Luoyang Advanced Manufacturing Industry Research And Development Base tianjin Research Institute For Advanced Equipment tsinghua University
Dasheng Qingfeng Beijing Technology Co ltd
Original Assignee
Luoyang Advanced Manufacturing Industry Research And Development Base tianjin Research Institute For Advanced Equipment tsinghua University
Dasheng Qingfeng Beijing Technology Co ltd
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Application filed by Luoyang Advanced Manufacturing Industry Research And Development Base tianjin Research Institute For Advanced Equipment tsinghua University, Dasheng Qingfeng Beijing Technology Co ltd filed Critical Luoyang Advanced Manufacturing Industry Research And Development Base tianjin Research Institute For Advanced Equipment tsinghua University
Priority to CN202111215618.6A priority Critical patent/CN113976960A/en
Publication of CN113976960A publication Critical patent/CN113976960A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw

Abstract

The invention provides a device and a method for repairing the abrasion of the bottom surface of a yawing brake disc of a wind driven generator, belonging to the field of machining and specifically comprising a bracket; a milling mechanism; a vertical adjustment mechanism; a lateral adjustment mechanism; a fan connecting mechanism; the milling and grinding mechanism comprises a milling cutter disc, a milling cutter shaft, a first belt pulley and a fixed seat; the fixed seat is movably fixed on the bracket and is respectively connected with the vertical adjusting mechanism, the power mechanism and the transverse adjusting mechanism; the milling cutter shaft penetrates through the fixed seat and can rotate around a preset central axis; the first belt pulley is sleeved on the milling cutter shaft, is positioned in the fixed seat and is used for driving the milling cutter shaft to rotate around the central axis; the milling cutter heads are detachably arranged on the periphery of the milling cutter shaft in a ring mode and are located at the upper end of the fixed seat. Through the processing scheme of this application, device small in size, the simple installation, easy operation can effectively reduce wind farm fortune dimension cost, improves the generated energy of wind farm.

Description

Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator
Technical Field
The invention relates to the field of machining, in particular to a device and a method for repairing abrasion of the bottom surface of a yawing brake disc of a wind driven generator.
Background
After a yaw brake disc of the wind driven generator runs for a period of time, pits and furrow-shaped abrasion easily occur at the bottom of the yaw brake disc, and the thickness of the brake disc is abraded to a degree that the running state of a fan cannot be met in serious cases. The traditional scheme is through hoist and mount aerogenerator, maintains the mode that driftage brake disc changed, and this scheme is consuming time, power and money, changes the cycle simultaneously and causes the extravagant condition of a large amount of electric powers easily.
Therefore, a device for repairing the abrasion of the yaw brake disc of the wind driven generator is urgently needed.
Disclosure of Invention
Therefore, in order to overcome the defects of the prior art, the invention provides a device and a method for repairing the abrasion of the bottom surface of the yaw brake disc of the wind driven generator.
In order to achieve the above object, the present invention provides a device for repairing the wear of the bottom surface of a yaw brake disc of a wind turbine, comprising: a support; the milling and grinding mechanism is arranged on one side surface of the support and used for milling the bottom surface of a yaw brake disc of the wind driven generator; the vertical adjusting mechanism is arranged on the side surface of the support, is positioned below the milling and grinding mechanism and is used for adjusting the vertical displacement of the milling and grinding mechanism; the transverse adjusting mechanism is fixed on the other side surface of the bracket and is used for adjusting the horizontal displacement of the milling and grinding mechanism; the fan connecting mechanism is detachably connected with a preformed hole of a yaw system main body frame of the wind driven generator and is fixedly connected with the transverse adjusting mechanism; the power mechanism is fixed on the other side surface of the support and positioned below the transverse adjusting mechanism and used for controlling milling of the milling and grinding mechanism, wherein the milling and grinding mechanism comprises a milling cutter disc, a milling cutter shaft, a first belt pulley and a fixed seat; the fixed seat is movably fixed on the bracket and is respectively connected with the vertical adjusting mechanism, the power mechanism and the transverse adjusting mechanism; the milling cutter shaft penetrates through the fixed seat and can rotate around a preset central axis; the first belt pulley is sleeved on the milling cutter shaft, is positioned in the fixed seat and is used for driving the milling cutter shaft to rotate around the central axis; a plurality of the milling cutter head can be disassembled and annularly arranged on the periphery of the milling cutter shaft and positioned at the upper end of the fixed seat.
In one embodiment, the vertical adjusting mechanism comprises an upper cross beam, a screw rod nut arranged on the screw rod, a screw rod nut sleeve fixedly connected with the screw rod nut and a lower cross beam; the upper cross beam and the lower cross beam are correspondingly fixed on the support, two ends of the screw rod are connected with the upper cross beam and the lower cross beam, the screw rod rotates to drive the screw rod nut to move up and down, and the screw rod nut sleeve is connected with the milling and grinding mechanism through a connecting plate with a hole to drive the milling and grinding mechanism to vertically move.
In one embodiment, the transverse adjusting mechanism comprises a hand wheel, a screw rod and a sliding table, the upper end of the sliding table is fixedly connected with the milling mechanism, a sliding block is arranged at the bottom end of the sliding table, a sliding groove is formed in the bottom of the sliding block, the shape and the size of the sliding groove correspond to those of the sliding block, the sliding block is embedded inside the sliding groove, one end of the screw rod is connected with the sliding block, the other end of the screw rod is connected with the hand wheel, and the hand wheel enables the milling cutter disc to move forwards and backwards by rotating the hand wheel.
In one embodiment, the fan connecting mechanism comprises a transverse L-shaped connecting plate, the long edge of the connecting plate is fixed to a yawing system of the wind driven generator through a bolt, and the short edge of the connecting plate is fixedly connected with a sliding table of the transverse adjusting mechanism.
In one embodiment, the milling cutter disc is of a cylindrical structure, and in order to facilitate installation of the milling cutter blade, the side surface of the milling cutter disc is processed into a square section, the long side of the section ranges from 80 mm to 125mm, and the short side of the section ranges from 10mm to 30 mm.
In one of the embodiments, the milling cutter head comprises a milling cutter body having a plurality of cutting insert seats connected with an end of the milling cutter body, the milling cutter body cooperating with tool coupling means at axially opposite ends thereof, indexable cutting inserts being secured in the cutting insert seats, each of the indexable cutting inserts having a top face and a bottom face substantially parallel to the top face, wherein side faces extend between the top face and the bottom face, the top face of each indexable cutting insert facing the chip end of the milling cutter, and a main cutting edge of the indexable cutting insert extending from the top face of the indexable cutting insert in a direction towards the bottom face of the indexable cutting insert. .
In one embodiment, the power mechanism comprises a motor and a second belt pulley, and the motor is mounted on the bracket; the second belt pulley is fixed on the output shaft of the motor and connected with the first belt pulley through a belt to drive the milling cutter disc to rotate.
In one embodiment, the gear ratio of the first belt pulley and the second belt pulley ranges from 2 to 5: 1.
The invention also provides a method for repairing the abrasion of the bottom surface of the yawing brake disc of the wind driven generator, which comprises the following steps: adjusting a milling cutter disc of the milling mechanism by rotating the transverse adjusting mechanism and the vertical adjusting mechanism to enable the milling cutter disc to be located at an installation position; connecting a device with a reserved hole of a main body frame of a yawing system of the wind driven generator through a bolt, adjusting a vertical adjusting mechanism, and controlling the distance between the milling cutter disc and a yawing brake disc of the wind driven generator to be within a preset distance; adjusting the position of the milling cutter disc again to enable the milling width to meet the requirements corresponding to the abrasion width of the yaw brake disc and the manufacturing width of the insert; adjusting the horizontal position of the milling cutter disc to ensure the parallelism of the bottom surface of the yaw brake disc after milling, so that the milling cutter disc is in contact with the bottom surface of the yaw brake disc for milling; and (3) bonding and fixing the insert made of the same material as the yaw brake disc to the bottom of the milled yaw brake disc, and milling the insert by adopting the preorder steps to ensure that the insert meets the running requirement of a fan.
Compared with the prior art, the invention has the advantages that: the device can meet the requirements of ground abrasion repair of all the yaw brake discs of the wind driven generator, effectively solves the problem of abrasion repair of the bottoms of the yaw brake discs of the wind driven generator, simultaneously enables the brake discs to recover in size in a mode of adhering the inserts, avoids damage to the original discs caused by welding, is small in size, simple and convenient to install, simple to operate, and capable of effectively reducing the operation and maintenance cost of a wind field and improving the generated energy of the wind field.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a device for repairing the wear of the bottom surface of a yaw brake disc of a wind turbine according to an embodiment of the present invention;
FIG. 2 is a right side view of a yaw brake disc bottom surface wear repair device of a wind turbine in an embodiment of the present invention;
FIG. 3 is a schematic view of a yaw brake disc bottom surface wear repair device of a wind turbine according to an embodiment of the present invention;
FIG. 4 is a left side view of a yaw brake disc bottom surface wear repair device of a wind turbine in an embodiment of the present invention.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
As shown in fig. 1 to 4, an embodiment of the present application provides a device for repairing abrasion on a bottom surface of a yaw brake disc of a wind turbine generator, including a bracket 301, a milling mechanism 4, a vertical adjusting mechanism 3, a horizontal adjusting mechanism 2, a fan connecting mechanism 1, and a power mechanism 5.
The milling and grinding mechanism 4 is arranged on one side surface of the bracket 301 and is used for milling the bottom surface of the yaw brake disc of the wind driven generator. The milling mechanism 4 includes a milling cutter disc 401, a milling cutter shaft 402, a first belt pulley and a fixing seat 403. The fixing base 403 is movably fixed on the bracket 301, and is connected with the vertical adjusting mechanism, the power mechanism and the horizontal adjusting mechanism respectively. The milling shaft 402 extends through the holder and is rotatable about a predetermined central axis. The first belt pulley is sleeved on the milling cutter shaft and is positioned in the fixed seat and used for driving the milling cutter shaft to rotate around the central axis. A plurality of facing cutter 401 can be dismantled and encircle and establish at the milling cutter axle periphery and be located the upper end of fixing base. The milling requirements of brake discs with different sizes can be met by replacing the milling cutter disc.
The vertical adjusting mechanism 3 is arranged on one side surface of the bracket 301 and below the milling mechanism 4, and is used for adjusting the vertical displacement of the milling mechanism 4. The vertical adjustment mechanism 3 may be a screw mechanism or other component capable of achieving vertical movement.
The transverse adjusting mechanism 2 is fixed on the other side surface of the bracket and is used for adjusting the horizontal displacement of the milling and grinding mechanism 4.
The fan connecting mechanism 1 is detachably connected with a reserved hole of a yaw system main body frame of the wind driven generator and is fixedly connected with the transverse adjusting mechanism.
The power mechanism 5 is fixed on the other side surface of the bracket 301 and is positioned below the transverse adjusting mechanism 2, and is used for controlling the milling of the milling and grinding mechanism 4.
Therefore, the method for repairing the abrasion of the bottom surface of the yaw brake disc of the wind driven generator can comprise the following steps:
the milling cutter disc 401 of the milling mechanism 4 is adjusted by rotating the transverse adjusting mechanism 2 and the vertical adjusting mechanism 3, so that the milling cutter disc 401 is located at the installation position, and at the moment, the milling cutter disc 401 is located at the outermost position and the lowest position, and the device is prevented from colliding with other parts or electric wires of the yaw system of the wind driven generator during installation;
the device is connected with a reserved hole of a yaw system main body frame of the wind driven generator through a bolt, a vertical adjusting mechanism is adjusted, the distance between a milling cutter disc and a yaw brake disc of the wind driven generator is controlled to be within a preset distance, and the preset distance can be 5-10 mm;
adjusting the position of the milling cutter disc again to enable the milling width to meet the requirements corresponding to the abrasion width of the yaw brake disc and the manufacturing width of the insert;
when judging whether the abrasion loss is larger than 10% of the original disc thickness, adjusting the horizontal position of the milling cutter disc to ensure the parallelism of the bottom surface of the yaw brake disc after milling, and enabling the milling cutter disc to be in contact with the bottom surface of the yaw brake disc for milling;
and fixing the insert made of the same material as the yaw brake disc to the bottom of the milled yaw brake disc, and milling the insert by adopting the preorder steps to meet the running requirement of the fan.
Aiming at the condition that the abrasion loss is less than 10% of the thickness of the original disc, the disc can be directly maintained in a milling and polishing mode; aiming at the condition that the abrasion loss is more than 10% of the thickness of the original disc, the bottom surface of the brake disc can be milled flat in a milling and polishing mode, and then an insert made of the same material as the brake disc is fixed to the bottom of the brake disc in a bonding mode to restore the size of the brake disc.
According to the device and the method for repairing the abrasion of the bottom surface of the yawing brake disc of the wind driven generator, the requirement for repairing the abrasion of the ground of the yawing brake disc of all the wind driven generators can be met, the problem of repairing the abrasion of the bottom of the yawing brake disc of the wind driven generator is effectively solved, meanwhile, the size of the brake disc is recovered in a bonding mode, the damage to an original disc caused by welding is avoided, the device is small in size, simple and convenient to install and easy to operate, the operation and maintenance cost of a wind field can be effectively reduced, and the generated energy of the wind field is improved.
In one embodiment, the vertical adjustment mechanism 3 includes an upper beam 306, a lead screw 305, a lead screw nut 302 mounted on the lead screw, a lead screw nut sleeve 303 fixedly connected with the lead screw nut, and a lower beam 305. The upper cross beam 306 and the lower cross beam 307 are correspondingly fixed on the bracket 301, two ends of the screw 305 are connected with the upper cross beam 306 and the lower cross beam 307, the screw 305 rotates to drive the screw nut 302 to move up and down, and the screw nut sleeve 303 is connected with the milling and grinding mechanism through the connecting plate 304 with holes to drive the fixing seat 403 of the milling and grinding mechanism 4 to vertically move. Two ends of the support 301 are respectively connected with the side faces of the upper cross beam and the lower cross beam, so that the support can support the upper cross beam and the lower cross beam, and meanwhile, the support can play a role in assisting in fixing the lead screw nut in the milling process.
In one embodiment, the transverse adjusting mechanism 2 comprises a hand wheel 7, a screw 202 and a sliding table 201, and the upper end of the sliding table 201 is fixedly connected with the milling and grinding mechanism 4. The bottom end of the milling cutter head is provided with a sliding block 201, the bottom of the sliding block is provided with a sliding groove, the shape and the size of the sliding groove correspond to those of the sliding block, the sliding block is embedded in the sliding groove, one end of a screw rod is connected with the sliding block, the other end of the screw rod is connected with a hand wheel, and the milling cutter head moves forwards and backwards by rotating the hand wheel.
In one embodiment, the fan connecting mechanism 1 comprises a transverse L-shaped connecting plate 101, the long side of the connecting plate is fixed to a yaw system of the wind driven generator through a bolt 6, and the short side of the connecting plate is fixedly connected with a sliding table of a transverse adjusting mechanism.
In one embodiment, the milling cutter disc is of a cylindrical structure, and in order to facilitate installation of the milling cutter blade, the side surface of the milling cutter disc is processed into a square section, the long side of the section ranges from 80 mm to 125mm, and the short side of the section ranges from 10mm to 30 mm.
In one embodiment, the milling cutter disc has a central axis about which the milling cutter disc is arranged to rotate, the milling cutter disc having a centre line arranged perpendicularly to the central axis, the milling cutter disc comprising a plurality of cutting edges arranged symmetrically about the centre line.
The milling cutter disc has a disc-shaped basic shape with a top side, an underside and an edge surface extending therebetween. The milling cutter disc has a thickness T defined by the distance between the top side and the underside. The thickness may be chosen, for example, in the interval 2-5 mm. The workpiece has a centrally disposed through-hole. A plurality of notches, preferably made by grinding, are provided at the periphery of the workpiece. In some embodiments, the number of notches may be five, but a number of notches from two to ten is possible. The notches form protruding teeth. The inner circle of the milling cutter disc may represent the imaginary maximum diameter D of the finished milling cutter disc. The diameter D may be chosen, for example, in the interval 15-30 mm. Thus, each tooth may protrude a certain distance radially outside the inner circle, thereby to obtain mechanical tolerances. The milling cutter disc has a centre axis about which the milling cutter disc is arranged to rotate during milling. The top side has a contoured shape and the underside is substantially planar. A plurality of teeth may be provided on the side edge surface of the ring, each tooth having a convex cutting edge. Each tooth includes a rake surface and a clearance surface. The rake face may be disposed in a plane that intersects a centerline of the facing cutter or intersects the through-hole. A cutting edge is formed in the intersection between the rake surface and the clearance surface. The cutting edge may be defined by a radius in a plane, which in this embodiment is of the order of half the thickness T of the milling cutter disc. The milling cutter disc has a centre line which is preferably perpendicular to the centre axis. The cutting edges are symmetrically disposed about the centerline. The cutting edge may be defined by a curve in a plane and/or one or more cutting angles, and the cutting edge may be convexly curved along a curve that is part-circular, parabolic, elliptical, or irregular.
In one of the embodiments, the milling cutter head comprises a milling cutter body having a plurality of cutting insert seats connected with an end of the milling cutter body, the milling cutter body cooperating with tool coupling means at axially opposite ends thereof, indexable cutting inserts being secured in the cutting insert seats, each of the indexable cutting inserts having a top face and a bottom face substantially parallel to the top face, wherein side faces extend between the top face and the bottom face, the top face of each indexable cutting insert facing the chip end of the milling cutter, and a main cutting edge of the indexable cutting insert extending from the top face of the indexable cutting insert in a direction towards the bottom face of the indexable cutting insert.
The milling cutter head includes a milling cutter body having a plurality of cutting insert seats at a forward end thereof, in which a corresponding number of indexable cutting inserts are received. Each indexable cutting insert has a central hole and is secured in the associated cutting insert seat by a central screw that is received by the central hole.
The centre screw extends in the axial direction of the milling cutter, however, it is not parallel to the axis of rotation C-C. Indexable cutting inserts are mounted tangentially to the milling cutter body. The milling cutter body is formed for connection at its rear end with a tool attachment or the like. When the indexable cutting insert is mounted in the milling cutter body, the indexable cutting insert is tilted, i.e. the central axis of the indexable cutting insert, which coincides with the longitudinal direction of the associated center screw, is not parallel to the central axis C-C of the milling cutter. The main cutting edge and the minor cutting edge of the cutting insert form a right angle.
Each indexable cutting insert comprises a top surface and a bottom surface parallel thereto. The area of the top surface is larger than that of the bottom surface. The top and bottom surfaces may be joined together by four side surfaces. The central bore of the indexable cutting insert opens into a top surface and a bottom surface. The top surface 7 corresponds to a large base surface and the bottom surface corresponds to a small base surface. When the milling cutter body is equipped with indexable cutting inserts, the bottom surface of each indexable cutting insert abuts against a support surface of each cutting insert seat, which support surface extends substantially transversely to the milling cutter axial direction C-C. Each major cutting edge is disposed radially inward of the intersection.
In one embodiment, the power mechanism comprises a motor and a second belt pulley, and the motor is arranged on the bracket; the second belt pulley is fixed on the output shaft of the motor and connected with the first belt pulley through a belt to drive the milling cutter disc to rotate. In one embodiment, the power mechanism may be composed of a motor 503, an electric wire box 501, a second pulley and a switch 502, and the milling cutter head is driven to rotate by the pulley transmission.
In one embodiment, the gear ratio of the first belt pulley and the second belt pulley ranges from 2 to 5: 1.
In one embodiment, the milling cutter disc and the fixed seat in the milling mechanism are detachably connected, the milling mechanism further comprises an abrasive disc used for replacing the milling cutter disc, and the abrasive disc is used for grinding a brake disc or an insert. Through the installation abrasive disc, can realize the function of polishing, promote the roughness of milling back work piece bottom surface for mill back brake disc bottom surface roughness can reach Ra1.6.
In another embodiment, the method for repairing the abrasion of the bottom surface of the yaw brake disc of the wind driven generator can further comprise the following steps:
(1) all the structural parts are connected through bolts, the power is turned on to test the operation, and the operation is stopped after the equipment is confirmed to be correct.
(2) The hand wheels 7 of the transverse adjusting and moving mechanism 2 and the vertical adjusting mechanism 3 are respectively rotated to adjust the milling cutter disc, so that the milling cutter disc 401 is positioned at the outermost position and the lowest position, and the device is prevented from colliding with other parts or wires of the wind driven generator yaw system during installation.
(3) The device is fixed in a reserved hole of a yaw system main body frame of the wind driven generator through a bolt 6, a hand wheel 7 is rotated again, and the vertical adjusting mechanism 3 is adjusted, so that the distance between the milling cutter disc 401 and a yaw brake disc of the wind driven generator is 5 mm.
(4) According to the abrasion width of a yaw brake disc of the wind driven generator and the manufacturing width of the insert, a hand wheel 7 of the transverse adjusting moving mechanism 2 is rotated, the position of a milling cutter disc is adjusted, after the milling width meets related requirements, the hand wheel 7 is locked, and the situation of position deviation caused by vibration in the milling process is avoided.
(5) And rotating a hand wheel 7 connected with the screw 305 to adjust the horizontal position of the milling cutter disc 401, so as to ensure the parallelism of the bottom surface of the yaw brake disc of the wind driven generator after milling.
(6) And starting a switch 502, slowly rotating a hand wheel 7 in the center of the bottom of the vertical adjusting mechanism 3 to enable the milling cutter disc to be in contact with the bottom surface of the yaw brake disc of the wind driven generator, and then starting the yaw system of the wind driven generator.
(7) In the milling process, the feed amount can be adjusted according to the milling requirement every time, and all hand wheels 7 of the vertical adjusting mechanism 3 are locked after the milling amount is adjusted to a proper position. The milling cutter can be adjusted to move in the transverse and vertical directions through the hand wheel, the adjustment can be carried out in real time as required in the milling process, the milling amount can be set according to the abrasion condition of a brake disc, and the feed amount can be selected independently between 0mm and 8mm each time.
(8) And (4) continuously milling the yaw brake disc of the wind driven generator by repeating the steps (1) to (7).
(9) After milling is finished, the grinding disc can be installed on the position of the milling cutter disc 401, and grinding and polishing are carried out on the yaw brake disc of the wind driven generator so as to meet the requirement of surface roughness.
(10) When an insert gluing process is needed, the wind driven generator yaw brake disc needs to be milled to a desired thickness, then the insert is fixedly installed at the bottom of the wind driven generator yaw brake disc through special glue, and finally the insert is milled and polished again through the device according to the steps (1) - (7), so that the operation requirement of the fan is met.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (9)

1. A device for repairing the abrasion of the bottom surface of a yawing brake disc of a wind driven generator is characterized by comprising:
a support;
the milling and grinding mechanism is arranged on one side surface of the support and used for milling the bottom surface of a yaw brake disc of the wind driven generator;
the vertical adjusting mechanism is arranged on the side surface of the support, is positioned below the milling and grinding mechanism and is used for adjusting the vertical displacement of the milling and grinding mechanism;
the transverse adjusting mechanism is fixed on the other side surface of the bracket and is used for adjusting the horizontal displacement of the milling and grinding mechanism;
the fan connecting mechanism is detachably connected with a preformed hole of a yaw system main body frame of the wind driven generator and is fixedly connected with the transverse adjusting mechanism;
the power mechanism is fixed on the other side surface of the bracket and positioned below the transverse adjusting mechanism and is used for controlling the milling of the milling and grinding mechanism,
the milling and grinding mechanism comprises a milling cutter disc, a milling cutter shaft, a first belt pulley and a fixed seat;
the fixed seat is movably fixed on the bracket and is respectively connected with the vertical adjusting mechanism, the power mechanism and the transverse adjusting mechanism;
the milling cutter shaft penetrates through the fixed seat and can rotate around a preset central axis;
the first belt pulley is sleeved on the milling cutter shaft, is positioned in the fixed seat and is used for driving the milling cutter shaft to rotate around the central axis;
a plurality of the milling cutter head can be disassembled and annularly arranged on the periphery of the milling cutter shaft and positioned at the upper end of the fixed seat.
2. The yaw brake disc bottom surface wear repair device of claim 1, wherein the vertical adjustment mechanism comprises an upper cross beam, a lead screw nut mounted on the lead screw, a lead screw nut sleeve fixedly connected with the lead screw nut, and a lower cross beam; the upper cross beam and the lower cross beam are correspondingly fixed on the support, two ends of the screw rod are connected with the upper cross beam and the lower cross beam, the screw rod rotates to drive the screw rod nut to move up and down, and the screw rod nut sleeve is connected with the milling and grinding mechanism through a connecting plate with a hole to drive the milling and grinding mechanism to vertically move.
3. The device of claim 1 for repairing abrasion of the bottom surface of a yaw brake disc, characterized in that the transverse adjusting mechanism comprises a hand wheel, a screw rod and a sliding table, the upper end of the sliding table is fixedly connected with the milling mechanism, a sliding block is arranged at the bottom end of the sliding table, a sliding groove is formed in the bottom of the sliding block, the shape and the size of the sliding groove correspond to those of the sliding block, the sliding block is embedded inside the sliding groove, one end of the screw rod is connected with the sliding block, the other end of the screw rod is connected with the hand wheel, and the hand wheel enables the milling cutter disc to advance and retreat by rotating.
4. The device for repairing the bottom surface abrasion of the yaw brake disc according to claim 1, wherein the fan connecting mechanism comprises a transverse L-shaped connecting plate, a long edge of the connecting plate is fixed to a yaw system of the wind driven generator through a bolt, and a short edge of the connecting plate is fixedly connected with a sliding table of the transverse adjusting mechanism.
5. The device for repairing abrasion on the bottom surface of a yaw brake disc according to claim 1, wherein the milling cutter disc is of a cylindrical structure, the side surface of the milling cutter disc is machined into a square section for facilitating installation of the milling cutter blade, the long side of the section ranges from 80 mm to 125mm, and the short side of the section ranges from 10mm to 30 mm.
6. The apparatus of claim 1, wherein the milling cutter disc includes a milling cutter body having a plurality of cutting insert seats coupled to an end of the milling cutter body, the milling cutter body cooperating with a cutter coupling arrangement at axially opposite ends thereof, indexable cutting inserts secured in the cutting insert seats, each of the indexable cutting inserts having a top surface and a bottom surface substantially parallel to the top surface, wherein a side surface extends between the top surface and the bottom surface, the top surface of each indexable cutting insert faces the chip end of the milling cutter, and the main cutting edge of the indexable cutting insert extends from the top surface of the indexable cutting insert in a direction toward the bottom surface of the indexable cutting insert. .
7. The apparatus of claim 1, wherein the power mechanism comprises a motor and a second pulley,
the motor is arranged on the bracket;
the second belt pulley is fixed on the output shaft of the motor and connected with the first belt pulley through a belt to drive the milling cutter disc to rotate.
8. The yaw brake disc bottom surface abrasion repairing device according to claim 7, wherein the gear ratio of the first belt pulley and the second belt pulley is in a range of 2-5: 1.
9. A method for repairing the abrasion of the bottom surface of a yawing brake disc of a wind driven generator is characterized by comprising the following steps:
adjusting a milling cutter disc of the milling mechanism by rotating the transverse adjusting mechanism and the vertical adjusting mechanism to enable the milling cutter disc to be located at an installation position;
connecting a device with a reserved hole of a main body frame of a yawing system of the wind driven generator through a bolt, adjusting a vertical adjusting mechanism, and controlling the distance between the milling cutter disc and a yawing brake disc of the wind driven generator to be within a preset distance;
adjusting the position of the milling cutter disc again to enable the milling width to meet the requirements corresponding to the abrasion width of the yaw brake disc and the manufacturing width of the insert; when the abrasion loss is judged to be more than 10% of the thickness of the original disc, adjusting the height and the horizontal position of the milling cutter disc, ensuring that the parallelism and the thickness of the bottom surface of the yaw brake disc after milling meet the repair requirement, and then enabling the milling cutter disc to be in contact with the bottom surface of the yaw brake disc for milling;
and (3) bonding and fixing the insert made of the same material as the yaw brake disc to the bottom of the milled yaw brake disc, and milling the insert by adopting the preorder steps to ensure that the insert meets the running requirement of a fan.
CN202111215618.6A 2021-10-19 2021-10-19 Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator Pending CN113976960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111215618.6A CN113976960A (en) 2021-10-19 2021-10-19 Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111215618.6A CN113976960A (en) 2021-10-19 2021-10-19 Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator

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Publication Number Publication Date
CN113976960A true CN113976960A (en) 2022-01-28

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Application Number Title Priority Date Filing Date
CN202111215618.6A Pending CN113976960A (en) 2021-10-19 2021-10-19 Device and method for repairing abrasion of bottom surface of yaw brake disc of wind driven generator

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116618953A (en) * 2023-06-14 2023-08-22 河北金巽源科技有限公司 Repairing method for yaw brake disc of fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116618953A (en) * 2023-06-14 2023-08-22 河北金巽源科技有限公司 Repairing method for yaw brake disc of fan
CN116618953B (en) * 2023-06-14 2023-10-24 河北金巽源科技有限公司 Repairing method for yaw brake disc of fan

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