CN115365760A - Remanufacturing and repairing method for abraded yaw brake disc - Google Patents
Remanufacturing and repairing method for abraded yaw brake disc Download PDFInfo
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- CN115365760A CN115365760A CN202210957353.5A CN202210957353A CN115365760A CN 115365760 A CN115365760 A CN 115365760A CN 202210957353 A CN202210957353 A CN 202210957353A CN 115365760 A CN115365760 A CN 115365760A
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to the technical field of a yaw brake disc of a wind generating set, and discloses a remanufacturing and repairing method for abrasion of the yaw brake disc, which comprises the following steps: the yaw system is transferred to a construction position, each part of the brake is disassembled, and the surface of the yaw brake disc is pretreated; installing a milling device on a tool surface of the brake; determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc; milling the yaw brake disc until the milling depth of the yaw brake disc is reached; judging whether an insert needs to be installed or not based on the determined milling depth; fixing an insert on a milling surface of the yaw brake disc after milling, and polishing and milling the surface of the insert; and installing various parts of the brake, replacing the brake pad, and adjusting the gap between the brake pad and the yaw brake disc. The method solves the problem of high maintenance cost of the existing yaw brake disc for repairing the wind generating set on the basis of reducing the damage to the yaw brake disc as much as possible.
Description
Technical Field
The invention relates to the technical field of a yaw brake disc of a wind generating set, in particular to a remanufacturing and repairing method for abrasion of the yaw brake disc.
Background
The yaw brake disc plays an important role in a yaw system, and the yaw brake disc and a yaw brake are matched to provide certain damping for the whole yaw system; when the yaw brake is used for yaw brake, the yaw brake clamps the yaw brake disc to provide brake torque for the whole machine, and the fan is ensured to be always in a windward state. For abrasion of the yaw brake disc, the conventional method is to hang down the whole machine to replace the yaw brake disc, so that the wind field maintenance cost is greatly increased, and the economic loss is large.
The existing method overcomes the defects of the traditional method, when the abrasion depth of the yaw brake disc is less than 3mm, uniform milling processing is carried out on the abrasion surface of the yaw brake disc, the milling depth is 3mm at most from a reference surface, and the cut yaw brake disc can be directly put into use; when the abrasion depth of the yawing brake disc is 3-8 mm, unified milling is carried out on the abrasion surface of the yawing brake disc, the milling depth is 8mm at most from a reference surface, and then an insert consistent with the thickness and the shape of the milling part is welded according to the area size of the milling part so as to ensure the original thickness size of the yawing brake. However, this insert welding operation can be performed only once.
Disclosure of Invention
The invention aims to provide a remanufacturing and repairing method for abraded yaw brake discs, which solves the problem that the existing method for repairing the yaw brake discs of a wind generating set is high in maintenance cost on the basis of reducing damage to the brake discs of the wind generating set as much as possible.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a remanufacturing and repairing method for abrasion of a yaw brake disc, which comprises the following steps: s1, moving a yaw system to a construction position, disassembling each part of a brake, and performing surface pretreatment on a yaw brake disc;
s2, mounting a milling device on a tool surface of the brake;
s3, determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc;
s4, milling the yaw brake disc until the milling depth of the yaw brake disc is reached;
step S5, judging whether an insert needs to be installed or not based on the determined milling depth, if so, entering step S6, otherwise, skipping step S6, and entering step S7;
s6, fixing an insert on the milling surface of the yaw brake disc after milling, and polishing and milling the surface of the insert;
and S7, mounting all parts of the brake, replacing the brake pad, and adjusting the gap between the brake pad and the yaw brake disc.
In some embodiments of the present application, in step S4, milling the yaw brake disc to the milling depth of the yaw brake disc includes:
determining the milling depth of the yaw brake disc based on the relationship between the rough milling depth of the yaw brake disc and the preset rough milling depth of the yaw brake disc;
and selecting a correction coefficient based on the relation between the yaw brake disc finish milling depth and a preset yaw brake disc finish milling depth to correct the yaw brake disc finish milling depth.
In some embodiments of the present application, a preset yaw brake disc rough milling depth matrix X0 is preset, and X0 (X1, X2, X3, X4) is set, where X1 is a first preset yaw brake disc rough milling depth, X2 is a second preset yaw brake disc rough milling depth, X3 is a third preset yaw brake disc rough milling depth, and X4 is a fourth preset yaw brake disc rough milling depth, where X1 < X2 < X3 < X4;
presetting a preset milling depth matrix G0, and setting G0 (G1, G2, G3, G4), wherein G1 is a first preset milling depth, G2 is a second preset milling depth, G3 is a third preset milling depth, G4 is a fourth preset milling depth, and G1 is greater than G2 and greater than G3 and less than G4;
setting the milling depth G of the yaw brake disc according to the relationship between the rough milling depth X of the yaw brake disc and the rough milling depth of each preset yaw brake disc:
when X is less than X1, selecting the first preset milling depth G1 as the milling depth G of the yaw brake disc;
when X is more than or equal to X1 and less than X2, selecting the second preset milling depth G2 as the milling depth G of the yaw brake disc;
when X2 is more than or equal to X and less than X3, selecting the third preset milling depth G3 as the milling depth G of the yaw brake disc;
and when X3 is not less than X and is less than X4, selecting the fourth preset milling depth G4 as the milling depth G of the yaw brake disc.
In some embodiments of the present application, a preset yaw brake disc finish-milling depth matrix Y0 is preset, and for the preset yaw brake disc finish-milling depth matrix Y0, Y0 (Y1, Y2, Y3, Y4) is set, where Y1 is a first preset yaw brake disc finish-milling depth, Y2 is a second preset yaw brake disc finish-milling depth, Y3 is a third preset yaw brake disc finish-milling depth, Y4 is a fourth preset yaw brake disc finish-milling depth, and Y1 < Y2 < Y3 < Y4;
presetting a preset correction coefficient matrix ai, and setting ai (a 1, a2, a3, a 4) for the preset correction coefficient matrix ai, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1 is more than a2 and less than a3 and less than a4;
selecting an ith preset correction coefficient ai according to the relation between the yaw brake disc finish milling depth Y and each preset yaw brake disc finish milling depth to correct the milling depth G, wherein i =1,2,3,4:
when Y is smaller than Y1, selecting the first preset correction coefficient a1 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a1;
when Y1 is not more than Y and is less than Y2, selecting the second preset correction coefficient a2 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a2;
when Y2 is more than or equal to Y and less than Y3, selecting the third preset correction coefficient a3 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a3;
and when Y3 is more than or equal to Y and less than Y4, selecting the fourth preset correction coefficient a4 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a4.
In some embodiments of the present application, in step S5, the determining whether an insert needs to be fixed based on the determined milling depth includes:
when the distance between the determined milling depth of the yaw brake disc and the reference surface of the yaw brake disc is smaller than 3mm, judging that a fixed insert is not needed;
and when the determined distance between the milling depth of the yaw brake disc and the reference surface of the yaw brake disc is 3-8 mm, determining that the insert needs to be fixed.
In some embodiments of the present application, in step S6, an insert is mounted on a milled surface of a yaw brake disc after milling, and the insert surface is subjected to polishing milling, including:
determining the milling depth of the insert based on the relation between the insert rough milling depth and the preset insert rough milling depth;
selecting a correction coefficient based on the relation between the insert finish milling depth and a preset insert processing depth to correct the milling depth of the insert;
and polishing the surface of the insert after finish milling.
In some embodiments of the present application, a preset insert rough milling depth matrix A0 is preset, and A0 (A1, A2, A3, A4) is set, where A1 is a first preset insert rough milling depth, A2 is a second preset insert rough milling depth, A3 is a third preset insert rough milling depth, and A4 is a fourth preset insert rough milling depth, where A1 < A2 < A3 < A4;
presetting a preset milling depth matrix D0, and setting D0 (D1, D2, D3, D4), wherein D1 is a first preset milling depth, D2 is a second preset milling depth, D3 is a third preset milling depth, D4 is a fourth preset milling depth, and D1 is more than D2 and less than D3 and less than D4;
setting the milling depth D of the insert according to the relation between the insert rough milling depth A and each preset insert rough milling depth:
when A is less than A1, selecting the first preset milling depth D1 as the milling depth D of the insert;
when A1 is more than or equal to A and less than A2, selecting the second preset milling depth D2 as the milling depth D of the insert;
when A2 is more than or equal to A and less than A3, selecting the third preset milling depth D3 as the milling depth D of the insert;
and when A3 is more than or equal to A and less than A4, selecting the fourth preset milling depth D4 as the milling depth D of the insert.
In some embodiments of the present application, a preset insert finish-milling depth matrix B0 is preset, and for the preset insert finish-milling depth matrix B0, B0 (B1, B2, B3, B4) is set, where B1 is a first preset insert finish-milling depth, B2 is a second preset insert finish-milling depth, B3 is a third preset insert finish-milling depth, B4 is a fourth preset insert finish-milling depth, and B1 < B2 < B3 < B4;
presetting a preset correction coefficient matrix ai, and setting ai (a 1, a2, a3, a 4) for the preset correction coefficient matrix ai, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1 is more than a2 and less than a3 and less than a4;
and selecting an ith preset correction coefficient ai according to the relation between the insert finish milling depth B and each preset insert finish milling depth to correct the milling depth D, wherein i =1,2,3,4:
when B is less than B1, selecting the first preset correction coefficient a1 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a1;
when B1 is not more than B and less than B2, selecting the second preset correction coefficient a2 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a2;
when B2 is not more than B and less than B3, selecting the third preset correction coefficient a3 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a3;
and when B3 is not less than B and less than B4, selecting the fourth preset correction coefficient a4 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a4.
In some embodiments of the present application, further comprising: judging whether the yaw brake disc is installed with an insert for over-repair;
if so, judging whether the thickness of the insert is larger than the preset insert thickness; if so, judging that the yaw brake disc cannot be remanufactured and repaired; if not, determining the milling depth H of the yaw brake disc based on the insert block thickness T;
and if not, determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc.
In some embodiments of the present application, a preset insert thickness matrix T0 is preset, and T0 (T1, T2, T3, T4) is set, where T1 is a first preset insert thickness, T2 is a second preset insert thickness, T3 is a third preset insert thickness, and T4 is a fourth preset insert thickness, where T1 < T2 < T3 < T4;
presetting a preset milling depth matrix H0 and H0 (H1, H2, H3 and H4), wherein H1 is a first preset milling depth, H2 is a second preset milling depth, H3 is a third preset milling depth, H4 is a fourth preset milling depth, and H1 is more than H2 and less than H3 and less than H4;
setting milling depth H according to the relation between the insert thickness T and each preset insert thickness:
when T is less than T1, selecting the first preset milling depth H1 as the milling depth H;
when T1 is not less than T and less than T2, selecting the second preset milling depth H2 as the milling depth H;
when T2 is more than or equal to T and less than T3, selecting the third preset milling depth H3 as the milling depth H;
and when T3 is more than or equal to T and less than T4, selecting the fourth preset milling depth H4 as the milling depth H.
The invention has the technical effects that:
determining the milling depth of the yaw brake disc based on the relationship between the rough milling depth of the yaw brake disc and the preset rough milling depth of the yaw brake disc; and selecting a correction coefficient based on the relation between the yaw brake disc finish milling depth and the preset yaw brake disc finish milling depth to correct the yaw brake disc milling depth, so that the accuracy of the yaw brake disc milling depth is improved, and insufficient or excessive milling is avoided.
The abrasion surface of the yaw brake disc does not need to be machined to 8mm, the milling depth of the yaw brake disc is accurately determined, the insert with the thickness of 8mm is embedded and welded after the abrasion is avoided, then the surface of the insert is milled to be horizontal to the reference surface of the yaw brake disc, the milling depth of the yaw brake disc is reduced, after the yaw brake disc is abraded again, remanufacturing and repairing can be carried out again, and the wind field on-site maintenance cost is reduced.
Determining the milling depth of the insert based on the relation between the insert rough milling depth and the preset insert rough milling depth; selecting a correction coefficient based on the relation between the insert finish milling depth and the preset insert processing depth to correct the milling depth of the insert; the surface of the insert after finish milling is polished, so that the accuracy of the milling depth of the insert can be improved, and the insufficient or excessive milling is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a method for remanufacturing and repairing worn yaw brake discs according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the existing remanufacturing and repairing method for the abrasion of the yaw brake disc,
to achieve the above object, as shown in fig. 1, there is provided a remanufactured repairing method of wear of a yaw brake disc, the method comprising: s1, transferring a yaw system to a construction position, disassembling each part of a brake, and performing surface pretreatment on a yaw brake disc;
s2, mounting a milling device on a tool surface of the brake;
s3, determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc;
s4, milling the yaw brake disc until the milling depth of the yaw brake disc is reached;
step S5, judging whether the insert needs to be installed or not based on the determined milling depth, if so, entering step S6, otherwise, skipping step S6 and entering step S7;
s6, fixing an insert on the milling surface of the yaw brake disc after milling, and polishing and milling the surface of the insert;
and S7, mounting each part of the brake, replacing the brake pad, and adjusting the gap between the brake pad and the yaw brake disc.
It can be understood that in the step S1, the guardian operates the fan, and the person climbs the tower to enter the yaw platform to adjust the repair position to a position convenient for construction; and according to the operation requirement, disassembling the brake. Packaging each part of the disassembled brake with a clean plastic bag, fastening the parts with a binding belt, placing the parts on a platform, and covering the platform with big cloth to avoid welding slag, dust and the like; preliminarily cleaning dust, oil stains on the surface and oil stains and iron rust in surface grooves of a damaged area by using a steel wire brush, a rag, an oil stain cleaning agent and the like; after the cleaning is finished, the cleaning agent is placed for a period of time, so that the cleaning agent is completely volatilized, and the surface of the brake disc is ensured to be dry.
In the step S2, the milling processing device is a milling disc, a base support of the milling disc device is installed at the installation position of the brake and fastened by using a brake installation bolt, and the damage caused by the falling of the device is avoided during installation.
And in the steps S3-S4, after the milling disc is subjected to tool setting, milling the part, needing to be milled, of the yaw brake disc until the milling surface is flat and has no pits. In step S6, an insert with the thickness of 8mm is added in a riveting and high molecular structure glue fixing mode. And (4) polishing and milling the surface of the insert by using a milling tool. In step S7, the brake is installed with reference to the installation manual; replacing the brake pad; the gap between the brake pad and the brake disc is adjusted, three positions are randomly selected for measurement, and the yaw brake disc remanufacturing repairing effect is conveniently confirmed through measurement and photographing records.
The roughness of the processed surface of the yaw brake disc is less than or equal to Ra6.3; the surface runout of the processed surface of the yaw brake disc is less than or equal to 0.5mm; the insert material is QT400.
In order to improve the precision of the milling depth of the yaw brake disc and avoid insufficient or excessive milling, in some specific embodiments of the present application, the milling depth of the yaw brake disc is determined based on the relationship between the rough milling depth of the yaw brake disc and a preset rough milling depth of the yaw brake disc;
and selecting a correction coefficient based on the relation between the yaw brake disc finish milling depth and the preset yaw brake disc finish milling depth to correct the yaw brake disc finish milling depth.
Further explaining, a preset yaw brake disc rough milling processing depth matrix X0 is preset, and X0 (X1, X2, X3, X4) is set, wherein X1 is a first preset yaw brake disc rough milling processing depth, X2 is a second preset yaw brake disc rough milling processing depth, X3 is a third preset yaw brake disc rough milling processing depth, and X4 is a fourth preset yaw brake disc rough milling processing depth, wherein X1 is more than X2 and less than X3 and less than X4;
presetting a preset milling depth matrix G0, and setting G0 (G1, G2, G3, G4), wherein G1 is a first preset milling depth, G2 is a second preset milling depth, G3 is a third preset milling depth, G4 is a fourth preset milling depth, and G1 is more than G2 and less than G3 and less than G4;
setting the milling depth G of the yaw brake disc according to the relationship between the rough milling depth X of the yaw brake disc and the rough milling depth of each preset yaw brake disc: when X is smaller than X1, selecting a first preset milling depth G1 as the milling depth G of the yaw brake disc; when X1 is not less than X and is less than X2, selecting a second preset milling depth G2 as the milling depth G of the yaw brake disc; when X2 is larger than or equal to X and is smaller than X3, selecting a third preset milling depth G3 as the milling depth G of the yaw brake disc; and when X3 is more than or equal to X and less than X4, selecting a fourth preset milling depth G4 as the milling depth G of the yaw brake disc.
It can be understood that the accuracy of the milling depth G of the yaw brake disc is improved by setting the milling depth G of the yaw brake disc according to the relationship between the rough milling depth X of the yaw brake disc and the rough milling depths of the preset yaw brake discs.
Further explaining, a preset yaw brake disc finish-milling depth matrix Y0 is preset, and for the preset yaw brake disc finish-milling depth matrix Y0, Y0 (Y1, Y2, Y3, Y4) is set, wherein Y1 is a first preset yaw brake disc finish-milling depth, Y2 is a second preset yaw brake disc finish-milling depth, Y3 is a third preset yaw brake disc finish-milling depth, Y4 is a fourth preset yaw brake disc finish-milling depth, and Y1 is more than Y2 and less than Y3 and less than Y4;
presetting a preset correction coefficient matrix ai, and setting ai (a 1, a2, a3, a 4) for the preset correction coefficient matrix ai, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1 is greater than a2 and is greater than a3 and is greater than a4;
selecting an ith preset correction coefficient ai according to the relation between the finish milling depth Y of the yaw brake disc and the finish milling depth of each preset yaw brake disc to correct the milling depth G, wherein i =1,2,3,4:
when Y is smaller than Y1, selecting a first preset correction coefficient a1 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a1; when Y1 is not more than Y and is less than Y2, selecting a second preset correction coefficient a2 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a2; when Y2 is not more than Y and is less than Y3, selecting a third preset correction coefficient a3 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a3; and when Y3 is not less than Y and is less than Y4, selecting a fourth preset correction coefficient a4 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G a4.
It can be understood that the ith preset correction coefficient ai is selected according to the relationship between the yaw brake disc finish milling depth Y and each preset yaw brake disc finish milling depth to correct the milling depth G, and the precision of the yaw brake disc milling depth G is further improved.
In some embodiments of the present application, in step S5, determining whether the insert needs to be fixed based on the determined milling depth includes:
when the distance between the determined milling depth of the yaw brake disc and the reference surface of the yaw brake disc is less than 3mm, judging that an insert does not need to be fixed;
and when the distance between the determined milling depth of the yaw brake disc and the reference surface of the yaw brake disc is 3-8 mm, determining that the insert needs to be fixed.
It can be understood that when the surface damage of the brake disc is small, and the thickness of the milled yaw brake disc is larger than 27mm (the original thickness of the yaw brake disc is 30 mm), the fixed insert blocks are not needed for subsequent repair; when the surface damage of the brake disc is large and the thickness of the brake disc after milling is less than or equal to 27mm, the insert needs to be fixed for subsequent repair.
In order to improve the milling depth accuracy of the insert and avoid insufficient or excessive milling, in some embodiments of the present application, the milling depth of the insert is determined based on a relationship between the insert rough milling depth and a preset insert rough milling depth; selecting a correction coefficient based on the relation between the insert finish milling depth and the preset insert processing depth to correct the milling depth of the insert; and polishing the surface of the insert after finish milling.
Further explaining, a preset insert rough milling processing depth matrix A0 is preset, and A0 (A1, A2, A3, A4) is set, wherein A1 is a first preset insert rough milling processing depth, A2 is a second preset insert rough milling processing depth, A3 is a third preset insert rough milling processing depth, and A4 is a fourth preset insert rough milling processing depth, wherein A1 is more than A2 and more than A3 and more than A4;
presetting a preset milling depth matrix D0 and setting D0 (D1, D2, D3 and D4), wherein D1 is a first preset milling depth, D2 is a second preset milling depth, D3 is a third preset milling depth, D4 is a fourth preset milling depth, and D1 is more than D2 and less than D3 and less than D4;
setting the milling depth D of the insert according to the relation between the insert rough milling depth A and each preset insert rough milling depth:
when A is less than A1, selecting a first preset milling depth D1 as the milling depth D of the insert; when A1 is more than or equal to A and less than A2, selecting a second preset milling depth D2 as the milling depth D of the insert; when A2 is more than or equal to A and less than A3, selecting a third preset milling depth D3 as the milling depth D of the insert; and when A3 is more than or equal to A and less than A4, selecting a fourth preset milling depth D4 as the milling depth D of the insert.
It can be understood that the milling depth D of the insert is set according to the relationship between the insert rough milling depth A and each preset insert rough milling depth, so that the precision of the milling depth D of the insert is improved.
Explaining, a preset insert finish-milling machining depth matrix B0 is preset, and B0 (B1, B2, B3 and B4) is set for the preset insert finish-milling machining depth matrix B0, wherein B1 is a first preset insert finish-milling machining depth, B2 is a second preset insert finish-milling machining depth, B3 is a third preset insert finish-milling machining depth, B4 is a fourth preset insert finish-milling machining depth, and B1 is greater than B2 and greater than B3 and less than B4;
presetting a preset correction coefficient matrix ai, and setting ai (a 1, a2, a3, a 4) for the preset correction coefficient matrix ai, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1 is more than a2 and less than a3 and less than a4;
and selecting an ith preset correction coefficient ai according to the relation between the insert finish milling depth B and each preset insert finish milling depth to correct the milling depth D, wherein i =1,2,3,4:
when B is less than B1, selecting a first preset correction coefficient a1 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a1; when B1 is not more than B and less than B2, selecting a second preset correction coefficient a2 to correct the milling depth D of the insert, wherein the corrected milling depth is D a2; when B2 is not less than B and less than B3, selecting a third preset correction coefficient a3 to correct the milling depth D of the insert, wherein the corrected milling depth is Da 3; and when B3 is not more than B and less than B4, selecting a fourth preset correction coefficient a4 to correct the milling depth D of the insert, wherein the corrected milling depth is D a4.
It can be understood that the milling depth D is corrected by selecting the ith preset correction coefficient ai according to the relationship between the insert finish milling depth B and each preset insert finish milling depth, so that the precision of the milling depth D of the insert is further improved.
In order to accurately determine the milling depth H of the yaw brake disc, in some specific embodiments of the present application, the method further includes: judging whether the yaw brake disc is installed with the insert for over-repair;
if so, judging whether the thickness of the insert is larger than the preset insert thickness; if so, judging that the yaw brake disc cannot be remanufactured and repaired; if not, determining the milling depth H of the yaw brake disc based on the insert block thickness T;
and if not, determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc.
It can be understood that, if the insert is installed on the yaw brake disc for repair, the insert installed in the previous repair needs to be milled and cleaned up, so that the use effect of the yaw brake disc is prevented from being influenced. Wherein the thickness of the preset insert is 8mm.
It should be noted that the above solution of the preferred embodiment is only one specific implementation proposed in the present application, and those skilled in the art can select other preset insert thicknesses according to practical situations, which does not affect the protection scope of the present application.
In order to accurately mill and clean the insert which is repaired and installed at the last time, in some specific embodiments of the present application, a preset insert thickness matrix T0 is preset, and T0 (T1, T2, T3, T4) is set, where T1 is a first preset insert thickness, T2 is a second preset insert thickness, T3 is a third preset insert thickness, and T4 is a fourth preset insert thickness, where T1 < T2 < T3 < T4;
presetting a preset milling depth matrix H0 and H0 (H1, H2, H3 and H4), wherein H1 is a first preset milling depth, H2 is a second preset milling depth, H3 is a third preset milling depth, H4 is a fourth preset milling depth, and H1 is more than H2 and less than H3 and less than H4;
setting milling depth H according to the relation between the insert thickness T and each preset insert thickness:
when T is less than T1, selecting a first preset milling depth H1 as the milling depth H; when T1 is more than or equal to T and less than T2, selecting a second preset milling depth H2 as a milling depth H; when T2 is more than or equal to T and less than T3, selecting a third preset milling depth H3 as the milling depth H; and when T3 is more than or equal to T and less than T4, selecting a fourth preset milling depth H4 as the milling depth H.
It can be understood that, in the above embodiment, the milling depth H is set according to the relationship between the insert thickness T and each preset insert thickness, so that the accuracy of the milling depth H can be improved.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least a portion of the sub-steps or stages of other steps.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of remanufacturing a repair of worn yaw brake disc, the method comprising:
s1, moving a yaw system to a construction position, disassembling each part of a brake, and performing surface pretreatment on a yaw brake disc;
s2, mounting a milling device on a tool surface of the brake;
s3, determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc;
s4, milling the yaw brake disc until the milling depth of the yaw brake disc is reached;
step S5, judging whether an insert needs to be installed or not based on the determined milling depth, if so, entering step S6, otherwise, skipping step S6, and entering step S7;
s6, fixing an insert on the milling surface of the yaw brake disc after milling, and polishing and milling the surface of the insert;
and S7, mounting each part of the brake, replacing the brake pad, and adjusting the gap between the brake pad and the yaw brake disc.
2. The method for remanufacturing and repairing worn yaw brake disc according to claim 1, wherein in step S4, milling the yaw brake disc to a milling depth of the yaw brake disc comprises:
determining the milling depth of the yaw brake disc based on the relationship between the rough milling depth of the yaw brake disc and the preset rough milling depth of the yaw brake disc;
and selecting a correction coefficient based on the relationship between the yaw brake disc finish milling depth and a preset yaw brake disc finish milling depth to correct the yaw brake disc finish milling depth.
3. The method for remanufacturing and repairing worn yaw brake discs according to claim 2, wherein a preset yaw brake disc rough milling depth matrix X0 is preset, and X0 (X1, X2, X3, X4) is set, wherein X1 is a first preset yaw brake disc rough milling depth, X2 is a second preset yaw brake disc rough milling depth, X3 is a third preset yaw brake disc rough milling depth, and X4 is a fourth preset yaw brake disc rough milling depth, wherein X1 < X2 < X3 < X4;
presetting a preset milling depth matrix G0, and setting G0 (G1, G2, G3, G4), wherein G1 is a first preset milling depth, G2 is a second preset milling depth, G3 is a third preset milling depth, G4 is a fourth preset milling depth, and G1 is more than G2 and less than G3 and less than G4;
setting the milling depth G of the yaw brake disc according to the relationship between the rough milling depth X of the yaw brake disc and the rough milling depth of each preset yaw brake disc:
when X is less than X1, selecting the first preset milling depth G1 as the milling depth G of the yaw brake disc;
when X1 is not less than X and is less than X2, selecting the second preset milling depth G2 as the milling depth G of the yaw brake disc;
when X2 is more than or equal to X and less than X3, selecting the third preset milling depth G3 as the milling depth G of the yaw brake disc;
and when X3 is not less than X and is less than X4, selecting the fourth preset milling depth G4 as the milling depth G of the yaw brake disc.
4. The remanufacturing and repairing method for the worn yaw brake disc according to claim 2, wherein a preset yaw brake disc finish milling depth matrix Y0 is preset, and Y0 (Y1, Y2, Y3, Y4) is set for the preset yaw brake disc finish milling depth matrix Y0, wherein Y1 is a first preset yaw brake disc finish milling depth, Y2 is a second preset yaw brake disc finish milling depth, Y3 is a third preset yaw brake disc finish milling depth, Y4 is a fourth preset yaw brake disc finish milling depth, and Y1 < Y2 < Y3 < Y4;
presetting a preset correction coefficient matrix ai, and setting ai (a 1, a2, a3, a 4) for the preset correction coefficient matrix ai, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1 is greater than a2 and less than a3 and less than a4;
selecting an ith preset correction coefficient ai according to the relation between the yaw brake disc finish milling depth Y and each preset yaw brake disc finish milling depth to correct the milling depth G, wherein i =1,2,3,4:
when Y is smaller than Y1, selecting the first preset correction coefficient a1 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a1;
when Y1 is not more than Y and is less than Y2, selecting the second preset correction coefficient a2 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a2;
when Y2 is not more than Y and is less than Y3, selecting the third preset correction coefficient a3 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a3;
and when Y3 is not less than Y and is less than Y4, selecting the fourth preset correction coefficient a4 to correct the milling depth G of the yaw brake disc, wherein the corrected milling depth is G x a4.
5. The method for remanufacturing and repairing worn yaw brake disc according to claim 1, wherein in step S5, the determining whether insert fixing is required based on the determined milling depth comprises:
when the distance between the determined milling depth of the yaw brake disc and the reference surface of the yaw brake disc is smaller than 3mm, judging that a fixed insert is not needed;
and when the determined distance between the milling depth of the yaw brake disc and the reference plane of the yaw brake disc is 3-8 mm, determining that the insert needs to be fixed.
6. The method for remanufacturing and repairing worn yaw brake disc according to claim 1, wherein in step S6, the insert is installed on the milled surface of the yaw brake disc, and the surface of the insert is polished and milled, and the method comprises the following steps:
determining the milling depth of the insert based on the relation between the insert rough milling depth and the preset insert rough milling depth;
selecting a correction coefficient based on the relation between the insert finish milling depth and a preset insert processing depth to correct the milling depth of the insert;
and polishing the surface of the insert after finish milling.
7. The method of remanufacturing and reconditioning wear of a yaw brake disc according to claim 6,
presetting a preset insert rough milling depth matrix A0, and setting A0 (A1, A2, A3, A4), wherein A1 is a first preset insert rough milling depth, A2 is a second preset insert rough milling depth, A3 is a third preset insert rough milling depth, and A4 is a fourth preset insert rough milling depth, wherein A1 is more than A2 and less than A3 and less than A4;
presetting a preset milling depth matrix D0, and setting D0 (D1, D2, D3, D4), wherein D1 is a first preset milling depth, D2 is a second preset milling depth, D3 is a third preset milling depth, D4 is a fourth preset milling depth, and D1 is more than D2 and less than D3 and less than D4;
setting the milling depth D of the insert according to the relation between the insert rough milling depth A and each preset insert rough milling depth:
when A is less than A1, selecting the first preset milling depth D1 as the milling depth D of the insert;
when A1 is more than or equal to A and less than A2, selecting the second preset milling depth D2 as the milling depth D of the insert;
when A2 is more than or equal to A and less than A3, selecting the third preset milling depth D3 as the milling depth D of the insert;
and when A3 is more than or equal to A and less than A4, selecting the fourth preset milling depth D4 as the milling depth D of the insert.
8. The method of remanufacturing a repair of worn yaw brake disc according to claim 6,
a preset insert finish-milling depth matrix B0 is preset, and B0 (B1, B2, B3 and B4) is set for the preset insert finish-milling depth matrix B0, wherein B1 is a first preset insert finish-milling depth, B2 is a second preset insert finish-milling depth, B3 is a third preset insert finish-milling depth, B4 is a fourth preset insert finish-milling depth, and B1 is greater than B2 and greater than B3 and less than B4;
presetting a preset correction coefficient matrix ai, and setting ai (a 1, a2, a3, a 4) for the preset correction coefficient matrix ai, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1 is more than a2 and less than a3 and less than a4;
and selecting an ith preset correction coefficient ai according to the relation between the insert finish milling depth B and each preset insert finish milling depth to correct the milling depth D, wherein i =1,2,3,4:
when B is less than B1, selecting the first preset correction coefficient a1 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a1;
when B1 is not more than B and less than B2, selecting the second preset correction coefficient a2 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a2;
when B2 is not more than B and less than B3, selecting the third preset correction coefficient a3 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a3;
and when B3 is not less than B and less than B4, selecting the fourth preset correction coefficient a4 to correct the milling depth D of the insert, wherein the corrected milling depth is D x a4.
9. The method of remanufacturing a repair of worn yaw brake disc according to claim 1,
judging whether the yaw brake disc is installed with an insert for over-repair;
if so, judging whether the thickness of the insert is larger than the preset insert thickness; if so, judging that the yaw brake disc cannot be remanufactured and repaired; if not, determining the milling depth H of the yaw brake disc based on the insert thickness T;
and if not, determining the milling depth of the yaw brake disc based on the wear condition of the yaw brake disc.
10. The method of remanufacturing a repair of worn yaw brake disc according to claim 9,
presetting a preset insert thickness matrix T0, and setting T0 (T1, T2, T3, T4), wherein T1 is a first preset insert thickness, T2 is a second preset insert thickness, T3 is a third preset insert thickness, and T4 is a fourth preset insert thickness, wherein T1 is more than T2 and less than T3 and less than T4;
presetting a preset milling depth matrix H0 and H0 (H1, H2, H3 and H4), wherein H1 is a first preset milling depth, H2 is a second preset milling depth, H3 is a third preset milling depth, H4 is a fourth preset milling depth, and H1 is more than H2 and less than H3 and less than H4;
setting the milling depth H according to the relation between the insert thickness T and each preset insert thickness:
when T is less than T1, selecting the first preset milling depth H1 as the milling depth H;
when T1 is not less than T and less than T2, selecting the second preset milling depth H2 as the milling depth H;
when T2 is more than or equal to T and less than T3, selecting the third preset milling depth H3 as the milling depth H;
and when T3 is more than or equal to T and less than T4, selecting the fourth preset milling depth H4 as the milling depth H.
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| CN202210957353.5A CN115365760A (en) | 2022-08-10 | 2022-08-10 | Remanufacturing and repairing method for abraded yaw brake disc |
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| CN202210957353.5A CN115365760A (en) | 2022-08-10 | 2022-08-10 | Remanufacturing and repairing method for abraded yaw brake disc |
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| CN202210957353.5A Pending CN115365760A (en) | 2022-08-10 | 2022-08-10 | Remanufacturing and repairing method for abraded yaw brake disc |
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Cited By (1)
| 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 |
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| EP0492740A1 (en) * | 1990-12-21 | 1992-07-01 | Turbine Support Europa B.V. | Gas turbine engine blade repair |
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| 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 |
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