CN109494951B - Installation method of motor end cover - Google Patents
Installation method of motor end cover Download PDFInfo
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- CN109494951B CN109494951B CN201811615492.XA CN201811615492A CN109494951B CN 109494951 B CN109494951 B CN 109494951B CN 201811615492 A CN201811615492 A CN 201811615492A CN 109494951 B CN109494951 B CN 109494951B
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- end cover
- short bolt
- mounting
- positioning rod
- hole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a mounting method of a motor end cover, which is applied to the assembly of a large end cover and a small end cover, wherein the large end cover and the small end cover are provided with at least three mounting holes for mounting short bolts, and the mounting method comprises the following steps: mounting the two positioning rods into the two mounting holes respectively; mounting a short bolt in the mounting hole without the positioning rod; replacing the positioning rod by using a short bolt, so that each mounting hole is provided with the short bolt, and in the replacement process, at least two mounting holes are provided with positioning structures; wherein, location structure includes the locating lever and/or short bolt. According to the installation method, the positioning rod is used for positioning the large end cover and the small end cover, so that the small end cover can be simply and accurately installed on the large end cover through the short bolt, the installation quality and the installation efficiency of the motor end cover are improved, and the problems of poor re-installation quality and long maintenance time of the motor bearing end cover are solved.
Description
Technical Field
The invention relates to the technical field of motor assembly, in particular to a method for mounting a motor end cover.
Background
At present, in the process of motor disassembly and assembly and bearing maintenance, workers usually perform centering on holes of an inner end cover of a bearing by means of experience and feeling, the problem that the holes of the inner end cover of the bearing and the holes of the outer end cover of the bearing are not concentric often occurs in the assembly process, the inner end cover of the bearing is separated from the bearing, the end cover of the motor and the outer end cover of the bearing need to be disassembled again at the moment, the hole aligning work needs to be repeated, the assembly efficiency is low, and the motor maintenance delay is caused.
In summary, how to improve the working efficiency of installing the motor end cover by the user is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of this, an object of the present invention is to provide a method for mounting a motor end cover, which can easily mount a small end cover of a motor on a large end cover, and improve assembly efficiency.
In order to achieve the above purpose, the invention provides the following technical scheme:
a mounting method of a motor end cover is applied to assembly of a large end cover and a small end cover, wherein the large end cover and the small end cover are provided with at least three mounting holes which correspond to each other one by one and are used for mounting short bolts, and the mounting method comprises the following steps:
installing two positioning rods into the two installation holes respectively so as to position the installation position of the small end cover; wherein the length of the positioning rod is greater than that of the short bolt;
installing the short bolt in the installation hole without the positioning rod;
replacing the positioning rod by using the short bolt, so that the short bolt is installed in each installation hole, and in the replacement process, positioning structures are arranged in at least two installation holes; wherein the positioning structure comprises the positioning rod and/or the short bolt.
Preferably, the replacing the positioning rod with the short bolt to make each mounting hole have the short bolt installed therein includes:
and removing one positioning rod, and installing one short bolt in the mounting hole from which the positioning rod is removed until each mounting hole is internally provided with the short bolt.
Preferably, the number of the mounting holes is three, and the three mounting holes are uniformly distributed along the circumferential direction of the small end cover.
Preferably, before the two positioning rods are respectively installed in the two installation holes, the positioning device further includes:
and installing an output shaft of a motor into a bearing hole of the large end cover, and installing a bearing between the output shaft and the bearing hole.
Preferably, when the short bolt is disposed in at least two of the mounting holes, the positioning rod is replaced by the short bolt, so that the short bolt is mounted in each mounting hole, including:
removing all the positioning rods;
and respectively installing one short bolt in each installation hole without the short bolt.
Preferably, before the two positioning rods are installed in the installation holes, the installation device further includes:
prefabricating the positioning rod with a flat head structure convenient to pull and twist at one end and a threaded structure at the other end;
correspondingly, install two locating levers respectively to two in the mounting hole, include:
and fixing the thread structure and the mounting hole of the large end cover in a thread manner, and sleeving the positioning rod in the mounting hole of the small end cover.
Preferably, the length of the positioning rod is greater than 250mm, the length of the thread structure is 25mm, and the length of the flat head structure is 25 mm.
The invention provides a mounting method of a motor end cover, which is applied to the assembly of a large end cover and a small end cover, wherein the large end cover and the small end cover are respectively provided with at least three mounting holes for mounting short bolts, and the mounting method comprises the following steps: a positioning rod is respectively arranged in the two mounting holes, and a short bolt is arranged in the mounting hole without the positioning rod; on the basis that positioning structures are arranged in at least two mounting holes, the positioning rods are replaced by the short bolts, so that the short bolts are mounted in each mounting hole, and each positioning structure comprises a positioning rod and/or a short bolt.
In the process of mounting the large end cover and the small end cover, the position of the small end cover is firstly positioned by the positioning rod, so that the short screw rod can be easily mounted in the mounting hole; then, the short bolt that the installation was accomplished fixes a position the position of little end cover, and then makes little end cover can be in the location state all the time at the in-process of demolising the locating lever, installing the short bolt to simplify the installation process who utilizes short bolt replacement locating lever.
The mounting method provided by the application always positions the large end cover and the small end cover by utilizing the at least two positioning structures, so that the small end cover can be simply and accurately mounted on the large end cover by the short bolt, and the mounting efficiency and the mounting quality of the motor end cover are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for mounting a motor end cover according to the present invention;
fig. 2 is a schematic structural diagram of a motor provided in the present invention;
FIG. 3 is a schematic structural diagram of a positioning rod according to the present invention;
fig. 4 is a schematic cross-sectional view of a flathead structure according to the present invention.
The reference numerals in FIGS. 1-4 are:
the device comprises a small end cover 1, a large end cover 2, a positioning rod 3, a flat head structure 4 and a thread structure 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
The core of the invention is to provide the mounting method of the motor end cover, which can easily mount the small end cover of the motor on the large end cover and improve the assembly efficiency and the assembly quality.
Referring to fig. 1 to 4, fig. 1 is a schematic flow chart illustrating a method for mounting a motor end cover according to the present invention; fig. 2 is a schematic structural diagram of a motor provided in the present invention; FIG. 3 is a schematic structural diagram of a positioning rod according to the present invention; fig. 4 is a schematic cross-sectional view of a flathead structure according to the present invention.
Referring to fig. 1, the invention provides a method for mounting a motor end cover, which is applied to the assembly of a large end cover 2 and a small end cover 1, wherein the large end cover 2 and the small end cover 1 are provided with at least three mounting holes which are in one-to-one correspondence and used for mounting short bolts, and the method comprises the following steps:
step S1, respectively installing the two positioning rods 3 into the two installation holes to position the installation position of the small end cover 1; wherein, the length of locating lever 3 is greater than the length of short bolt.
Specifically, big end cover 2 is equipped with a plurality of first mounting holes, and tip cap 1 is equipped with a plurality of second mounting holes, first mounting hole and second mounting hole one-to-one, and the two communicates under the state of tip cap 2 and 1 terminal surface laminating of tip cap and forms a complete mounting hole. In the assembling process, short bolts are required to sequentially penetrate through the second mounting hole and the first mounting hole, and the large end cover 2 and the small end cover 1 are fixed. In addition, in order to ensure the fixing effect of the large end cover 2 and the small end cover 1, the first mounting hole is preferably a threaded hole, and the second mounting hole is preferably a unthreaded hole.
During same locating lever 3 penetrated corresponding first mounting hole and second mounting hole, locating lever 3 and first mounting hole can be fixed through little clearance fit or threaded connection's mode. The number of the positioning rods 3 is two, and the small end cap 1 is movable only in the longitudinal direction of the positioning rods 3. In the installation process, the small end cover 1 is controlled to move towards the direction close to the large end cover 2, and then the small end cover 1 can be placed at a proper installation position.
Step S2 is to attach a short bolt to the attachment hole where the positioning rod 3 is not provided. Specifically, the small end cover 1 and the large end cover 2 are controlled to be attached, then the short bolts are fixed in the mounting holes, and the small end cover 1 and the large end cover 2 are fixed.
S3, replacing the positioning rod 3 with a short bolt, so that each mounting hole is provided with the short bolt, and in the replacement process, at least two mounting holes are provided with positioning structures; wherein the positioning structure comprises a positioning rod 3 and/or a short bolt.
Specifically, the replacement specifically means that the positioning rod 3 is removed, and the short bolt is installed in the installation hole in which the positioning rod 3 is originally installed. In the replacement process, at least two positioning structures are required to be ensured to always position the small end cover 1, all the positioning structures can be positioning rods 3 and also can be short bolts, and one part of the positioning rods 3 and the other part of the positioning rods are short bolts.
In the prior art, a user needs to center the large end cover 2 and the small end cover 1 by experience and feeling, so that the reloading quality is poor, and the reloading efficiency is low. The application provides an installation method utilizes locating lever 3 to fix a position big end cover 2 and little end cover 1, 3 one end of locating lever and the hookup of big end cover 2, big end cover 2 and the 1 hole center position of little end cover can be adjusted to the other end, be convenient for measure the bearing path condition simultaneously, thereby make the short bolt can be simple, the accuracy is installed little end cover 1 on big end cover 2, the installation quality and the installation effectiveness of motor end cover have been improved, effectual solution motor bearing end cover repacking quality is difficult to control, can't satisfy the problem of requirements such as electrical equipment assembly, overhaul time length.
Optionally, in an embodiment that the positioning rod 3 is replaced with a short bolt provided by the present application, in step S3, the positioning rod 3 is replaced with a short bolt, so that each mounting hole is mounted with a short bolt, including: and (3) dismantling one positioning rod 3, and installing a short bolt in the installation hole for dismantling the positioning rod 3 until each installation hole is internally provided with a short bolt. Namely, in the replacement process, the positioning rods 3 are removed one by one, and each time one positioning rod 3 is removed, a short bolt is installed at the removed positioning rod 3.
Optionally, in another embodiment that the positioning rod 3 is replaced with a short bolt provided in this application, when the short bolt is disposed in at least two mounting holes, the positioning rod 3 is replaced with a short bolt in step S3, so that each mounting hole is mounted with a short bolt, including: dismantling all the positioning rods 3; then, a short bolt is installed in each installation hole where the short bolt is not installed. When little end cover 1 has been fixed with two short bolts promptly, then utilize short bolt to fix a position little end cover 1, can once only demolish two locating levers 3 this moment, and then install short bolt, until accomplishing the assembling process.
Optionally, in an embodiment provided by the present application, the number of the mounting holes is three, and the three are uniformly distributed along the circumferential direction of the small end cover 1. The assembly process can be simplified by only providing three mounting holes; in addition, the small end cover 1 and the large end cover 2 are more firm and stable after the assembly is completed due to the uniform distribution of the mounting holes. In the actual assembly process, firstly, two positioning rods 3 are utilized for positioning, then a short bolt is installed, then one positioning rod 3 is disassembled, and a short bolt is installed, and finally another positioning rod 3 is disassembled, and a short bolt is installed.
Optionally, in an embodiment provided by the present application, before installing the two positioning rods 3 into the two installation holes respectively, the method further includes:
and step S4, mounting the output shaft of the motor into the bearing hole of the large end cover 2, and mounting the bearing between the output shaft and the bearing hole. Specifically, a bearing hole is formed in the middle of the large end cover 2, a through hole is formed in the middle of the small end cover 1, and the output shaft penetrates through the through hole of the small end cover 1 and the bearing hole of the large end cover 2; meanwhile, the bearing is arranged between the output shaft and the bearing hole of the large end cover 2 according to certain matching.
Optionally, during actual assembly, the fit between the bearing and the bearing chamber is preferably interference fit, and certainly, for the convenience of assembling and disassembling the asynchronous motor, a clearance fit mode can be selected for fixing, and the clearance is not more than 0.03 mm. Optionally, the bearing and large end cap 2 are between 1.55 and 2.5mm apart, with an upper tolerance of 0.02 and a lower tolerance of 0.
Optionally, in order to optimize the use effect of the installation method, on the basis of any one of the above embodiments, before installing the two positioning rods 3 into the two installation holes, the installation method further includes:
and step S5, prefabricating a positioning rod 3 with a flat head structure 4 convenient to pull and twist at one end and a threaded structure 5 at the other end.
Correspondingly, install two locating levers 3 into the mounting hole, include:
and step S6, fixing the thread structure 5 and the mounting hole of the large end cover 2 by threads, and sleeving the positioning rod 3 in the mounting hole of the small end cover 1.
Specifically, the positioning rod 3 is a long screw-shaped structure, and the specification of the diameter of the positioning rod is flexibly selected according to the specification of the motor. 3 one end of locating lever sets up can with the fixed external screw thread of first mounting hole cooperation, and the other end sets up flat head structure 4, and flat head structure 4 can be for following the interior hexagon head that the terminal surface extends to the middle part, also can be for the transversal structure of personally submitting flat bar shape, can use with the spanner cooperation, convenience of customers control locating lever 3 can.
Optionally, in the actual processing process, the total length of the positioning rod 3 is preferably greater than 250mm, the length of the thread structure 5 is 25mm, and the length of the flat head structure 4 is 25mm, so that the use effect of the positioning rod 3 is guaranteed.
Optionally, the present application also provides a preferred embodiment of specific specifications of the positioning rod 3, and specific parameters may refer to the marks in fig. 3 and fig. 4, and it should be noted that the numbers marked at the positions of the dotted lines in the drawings all represent the size, unit mm. It can be understood that the specific dimensions are merely used as references, and can be flexibly adjusted according to requirements in actual use.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The method for mounting the motor end cover provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (1)
1. The mounting method of the motor end cover is applied to assembly of a large end cover and a small end cover, wherein the large end cover and the small end cover are provided with at least three mounting holes which correspond to each other one by one and are used for mounting short bolts, and the mounting method comprises the following steps:
installing two positioning rods into the two installation holes respectively so as to position the installation position of the small end cover; wherein the length of the positioning rod is greater than that of the short bolt;
installing the short bolt in the installation hole without the positioning rod;
replacing the positioning rod by using the short bolt, so that the short bolt is installed in each installation hole, and in the replacement process, positioning structures are arranged in at least two installation holes; wherein the positioning structure comprises the positioning rod and/or the short bolt;
utilize the short bolt replacement the locating lever makes every all install in the mounting hole the short bolt includes:
removing one positioning rod, and installing one short bolt in the installation hole for removing the positioning rod until each installation hole is provided with the short bolt;
the number of the mounting holes is three, and the three mounting holes are uniformly distributed along the circumferential direction of the small end cover;
before installing two locating levers respectively in two mounting hole, still include:
installing an output shaft of a motor into a bearing hole of the large end cover, installing a bearing between the output shaft and the bearing hole, wherein the clearance between the bearing and a bearing chamber is not more than 0.03mm, the clearance between the bearing and the large end cover is between 1.55 and 2.5mm, the upper tolerance of the large end cover is 0.02, and the lower tolerance of the large end cover is 0;
when at least two be equipped with in the mounting hole short bolt, utilize short bolt replacement the locating lever makes every all install in the mounting hole short bolt includes:
removing all the positioning rods;
installing a short bolt in each installation hole where the short bolt is not installed;
before installing two locating levers in the mounting hole, still include:
prefabricating the positioning rod with a flat head structure convenient to pull and twist at one end and a threaded structure at the other end;
correspondingly, install two locating levers respectively to two in the mounting hole, include:
fixing the thread structure and the mounting hole of the large end cover in a thread manner, and sleeving the positioning rod in the mounting hole of the small end cover;
the length of locating bar is greater than 250mm, the length of helicitic texture is 25mm, the length of flat head structure is 25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615492.XA CN109494951B (en) | 2018-12-27 | 2018-12-27 | Installation method of motor end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615492.XA CN109494951B (en) | 2018-12-27 | 2018-12-27 | Installation method of motor end cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494951A CN109494951A (en) | 2019-03-19 |
| CN109494951B true CN109494951B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811615492.XA Active CN109494951B (en) | 2018-12-27 | 2018-12-27 | Installation method of motor end cover |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6998739B2 (en) * | 2004-01-26 | 2006-02-14 | Mccain Van D | Alternator cover shield |
| CN100482422C (en) * | 2007-09-25 | 2009-04-29 | 重庆长安汽车股份有限公司 | ISG electrical machine mounting jig of the engine |
| CN103001400B (en) * | 2011-09-13 | 2014-12-10 | 上海南洋电机有限公司 | Assembling and disassembling tool for disk type permanent magnet motors and method for installing motor end covers |
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| CN109494951A (en) | 2019-03-19 |
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