CN112476341A - T-shaped head and installation method of stud bolt thereof - Google Patents
T-shaped head and installation method of stud bolt thereof Download PDFInfo
- Publication number
- CN112476341A CN112476341A CN202011329817.5A CN202011329817A CN112476341A CN 112476341 A CN112476341 A CN 112476341A CN 202011329817 A CN202011329817 A CN 202011329817A CN 112476341 A CN112476341 A CN 112476341A
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- China
- Prior art keywords
- stud bolt
- fastening
- shaped head
- insulating plug
- plug
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Abstract
The invention discloses a method for installing and fastening a stud bolt with a T-shaped head, which comprises the following steps: mounting one end of a stud bolt and an insulating plug; sleeving a stop washer at the other end of the stud bolt; the insulating plug and the stud bolt are arranged in a boot sleeve with a T-shaped head and fastened together; removing the insulating plug; fastening the joint of the stud bolt and the boot sleeve; and (5) installing and fastening an insulating plug. The invention utilizes the stop washer between the stud bolt and the T-shaped head, and carries out disassembly operation after the stud bolt and the T-shaped head are fastened by using the original installation mode. Due to the action of the stop gasket, the insulating plug is detached, and meanwhile the stud bolt and the T-shaped head are kept in an installation state. Thus, the stud bolt is fastened independently by using the torque wrench, and the purpose of fastening the stud bolt is achieved. The centering accuracy of the stud bolt and the T-shaped head is ensured, and meanwhile, the mounting torque of the stud bolt and the T-shaped head is ensured.
Description
Technical Field
The invention relates to the technical field of installation of electric locomotive transformers, in particular to a T-shaped head and an installation method of a stud bolt of the T-shaped head.
Background
The T-shaped head of the stud single-stop washer is widely used for the conductive connection of a 25KV loop of a locomotive. In some kinds of electric locomotives, there are factors such as high-voltage cable stiffness and sight shielding during installation of the T-shaped head, which are not favorable for the centering installation operation of the stud bolt, as shown in fig. 1-3, when the stud bolt 3 is installed and fastened, the conductive contact surface 6 between the transformer high-voltage terminal 5 and the high-voltage cable T-shaped head 1 will loosen, and discharge and even burning will be caused under the working voltage of 25 KV.
In order to solve the problem, in the prior art, the insulating plugs 4 are firstly fastened with the stud bolts 3, the insulating plugs 4 are of a cone structure, the installation guide effect of the cone is utilized to perform centering operation, the insulating plugs are installed in the boot sleeve 2, and then the insulating plugs and the boot sleeve are fastened together, as shown in fig. 1-3.
However, the stud bolt 3 is preassembled with the insulation plug 4 and then the T-head 1 is installed. In this operation, a process of co-torqueing fastening of three threaded fasteners is involved. The insulating plug 4 and the T-shaped head 1 have friction, and the fastening torque among the insulating plug, the T-shaped head and the T-shaped head is seriously influenced. Insufficient mounting torque of the stud bolt 3 and the T-shaped head 1 can seriously affect the running quality of the locomotive.
Based on this, the prior art still remains to be improved.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention provide a method for mounting and fastening a stud bolt of a T-head and a method for mounting a T-head, which can solve the technical problems caused by insufficient mounting torque between the stud bolt and the T-head in the prior art.
On one hand, the mounting and fastening method for the stud bolt with the T-shaped head disclosed by the embodiment of the invention comprises the following steps:
s1, mounting one end of the stud bolt and the insulating plug;
s2, sleeving a stop washer at the other end of the stud bolt;
s3, the insulation plug and the stud bolt are installed into the boot sleeve of the T-shaped head and fastened together; (ii) a
S4, removing the insulation plug;
s5 fastening the joint of the stud bolt and the boot sleeve;
and S6, installing and fastening the insulating plug.
Further, before the S1, the method further includes:
s0 removing the grease in the T-head boot sleeve and the insulation plug, and coating new grease on the surface of the insulation plug and the inner surface of the boot sleeve.
Further, still include:
s7 installing the dust cap on the boot sleeve end.
Further, the torque applied for fastening in S3 is 45 to 55N · m.
Further, the fastening torque used in S5 is 45 to 55N · m.
Further, the fastening torque used in S6 is 45 to 55N · m.
Further, the stop washer is provided with a through hole for the stud bolt to pass through on the side away from the insulating plug;
and one surface far away from the insulating plug is provided with anti-skid grains.
Further, the stop washer gradually arches from the edge to the center towards the direction close to the insulating plug.
Furthermore, the insulating plug is of a cone structure.
On the other hand, the embodiment of the invention also discloses a mounting method of the T-shaped head, which comprises the mounting and fastening method, and the other end of the T-shaped head is connected to a high-voltage terminal of the transformer.
By adopting the technical scheme, the invention at least has the following beneficial effects:
the invention utilizes the stop washer between the stud bolt and the T-shaped head, and carries out disassembly operation after the stud bolt and the T-shaped head are fastened by using the original installation mode. Due to the action of the stop gasket, the insulating plug is detached, and meanwhile the stud bolt and the T-shaped head are kept in an installation state. Thus, the stud bolt is fastened independently by using the torque wrench, and the purpose of fastening the stud bolt is achieved. The centering accuracy of the stud bolt and the T-shaped head is ensured, and meanwhile, the mounting torque of the stud bolt and the T-shaped head is ensured.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1, 2 and 3 are schematic views of a prior art mounting structure of the present invention;
FIG. 4 is a schematic view of the stud installation orientation of one embodiment of the present invention;
FIG. 5 is a schematic view of the insulating plug according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating installation of a dust cap according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
As shown in fig. 4 to 6, some embodiments of the present invention disclose a method for installing and fastening a stud bolt 3 of a T-head 1, including the steps of:
s0 removing the grease in the boot sleeve 2 of the T-shaped head 1 and on the insulating plug 4, and smearing new grease on the surface of the insulating plug 4 and the inner surface of the boot sleeve 2;
s1, mounting one end of the stud bolt 3 and the insulating plug 4;
s2, sleeving a stop washer at the other end of the stud bolt 3;
s3, the insulating plug 4 and the stud bolt 3 are installed into the shoe sleeve 2 of the T-shaped head 1 together and are fastened by adopting a torque of 45-55 N.m; the insulating plug 4 is of a cone structure, so that a guiding effect is achieved, and the double-headed bolt 3 can be quickly centered with the T-shaped head 1; the other end of the T-shaped head is connected to a transformer high-voltage terminal 5;
s4, removing the insulation plug 4;
s5 fastening the joint of the stud bolt 3 and the shoe sleeve 2, wherein the fastening torque is 45-55 N.m;
s6, installing and fastening the insulating plug 4, wherein the fastening torque is 45-55 N.m;
s7 fitting the dust cap 9 to the end of the boot sleeve 2.
In this embodiment, the stop washer is a through hole for the stud bolt 3 to pass through on the side away from the insulating plug 4; and one surface far away from the insulating plug 4 is provided with anti-skid grains. Preferably, the stop washer gradually arches from the edge to the center in the direction close to the insulating plug 4.
After a plurality of tests on site, the T-shaped head 1 is installed after the stud bolt 3 and the insulating plug 4 are preassembled, and then the disassembly operation is carried out. It is determined that the stud bolt 3 and the T-shaped head 1 are maintained in the mounted state each time the insulating plug 4 is removed. And when the torque wrench 8 is used for torque fastening, 1/4-3/4 circles can be rotated again, which shows that the original operation can not ensure the fastening torque of the stud bolt 3 and the T-shaped head 1.
Example 1
As shown in fig. 4 to 6, the present embodiment discloses a method for mounting a T-head 1, including:
and (4) completely wrapping the insulating plug by using dust-free wiping cloth, and placing aside. The insulating plug is required not to be in direct contact with the ground and dust during the whole process.
And wiping lubricating grease on the inner part of the boot sleeve 2 and the insulating plug by using dust-free wiping cloth and absolute ethyl alcohol, and then coating new lubricating grease on the surface of the insulating plug 4 and the inner surface of the boot sleeve 2.
Installing a stud bolt 3 and insulating a plug:
the short end of the stud bolt 3 and the insulating plug are installed first.
The stopper washer is attached to the long end side of the stud bolt 3, and the tapered surface of the stopper washer faces the stud bolt 3.
The insulating plug and the stud bolt 3 are installed into the boot sleeve 2, and the torque is 50 N.m.
And then the insulating plug is removed, after removal, the stud bolt 3 is remained in the boot sleeve 2 due to the action of the stop pad, and the stud bolt 3 is subjected to torque fastening by using a torque wrench 8 and a 22mm lengthened sleeve 7, wherein the fastening value is 50 N.m.
The moment wrench 8 and the 24mm sleeve 7 are used for insulating plug installation, and the tightening moment is 50 N.m.
The inside of the dustproof cap 9 is cleaned (without applying lubricating grease), and the dustproof cap is pushed onto the boot sleeve 2 of the T-shaped head 1 with strength until the boot sleeve is clawed, and then is bound by a binding belt.
In summary, in the embodiment of the invention, the assembled stud bolt and the insulating plug are separated after being installed by using the stop washer; after the insulating plug auxiliary stud bolt is used for centering installation, the stud bolt is fastened for the second time so as to ensure that the stud bolt is firmly installed. The installation quality of the T-shaped head of the high-voltage cable of the main transformer of the electric locomotive can be improved, and the possibility that the locomotive has major accidents in the running process due to the installation and fastening problems of the T-shaped head is eliminated.
It should be particularly noted that the various components or steps in the above embodiments can be mutually intersected, replaced, added or deleted, and therefore, the combination formed by the reasonable permutation and combination conversion shall also belong to the protection scope of the present invention, and the protection scope of the present invention shall not be limited to the embodiments.
The above is an exemplary embodiment of the present disclosure, and the order of disclosure of the above embodiment of the present disclosure is only for description and does not represent the merits of the embodiment. It should be noted that the discussion of any embodiment above is exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to those examples, and that various changes and modifications may be made without departing from the scope, as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A method for installing and fastening a T-head stud bolt is characterized by comprising the following steps:
s1, mounting one end of the stud bolt and the insulating plug;
s2, sleeving a stop washer at the other end of the stud bolt;
s3, the insulation plug and the stud bolt are installed into the boot sleeve of the T-shaped head and fastened together; (ii) a
S4, removing the insulation plug;
s5 fastening the joint of the stud bolt and the boot sleeve;
and S6, installing and fastening the insulating plug.
2. The installation fastening method of claim 1, further comprising, before said S1:
s0 removing the grease in the T-head boot sleeve and the insulation plug, and coating new grease on the surface of the insulation plug and the inner surface of the boot sleeve.
3. The installation fastening method of claim 1, further comprising:
s7 installing the dust cap on the boot sleeve end.
4. The installation fastening method according to claim 1, wherein the torque applied for fastening in S3 is 45 to 55N · m.
5. The installation fastening method according to claim 1, wherein the fastening torque used in S5 is 45 to 55N · m.
6. The installation fastening method according to claim 1, wherein the fastening torque used in S6 is 45 to 55N · m.
7. The installation fastening method of claim 2,
the stop gasket is provided with a through hole for the stud bolt to pass through at one side far away from the insulating plug;
and one surface far away from the insulating plug is provided with anti-skid grains.
8. The installation fastening method of claim 7, wherein the stop washer is gradually arched from the edge to the center in a direction approaching the insulation plug.
9. The installation fastening method of claim 1, wherein the insulating plug is of a cone structure.
10. A method for mounting a T-head, comprising the method for mounting and fastening a T-head according to any one of claims 1 to 9, wherein the other end of the T-head is connected to a high-voltage terminal of a transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011329817.5A CN112476341B (en) | 2020-11-24 | 2020-11-24 | T-shaped head and installation method of stud bolt thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011329817.5A CN112476341B (en) | 2020-11-24 | 2020-11-24 | T-shaped head and installation method of stud bolt thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112476341A true CN112476341A (en) | 2021-03-12 |
| CN112476341B CN112476341B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011329817.5A Active CN112476341B (en) | 2020-11-24 | 2020-11-24 | T-shaped head and installation method of stud bolt thereof |
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| Country | Link |
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| CN (1) | CN112476341B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524120A (en) * | 2021-08-04 | 2021-10-22 | 长春中车轨道车辆有限公司 | CRH5G brake disc reducing bolt assembling platform and assembling process thereof |
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| JP2012249366A (en) * | 2011-05-25 | 2012-12-13 | J-Power Systems Corp | T-shaped insulation tap for directly connecting equipment and t-shaped terminal connection part for directly connecting equipment |
| CN105406439A (en) * | 2015-12-02 | 2016-03-16 | 成都科创佳思科技有限公司 | Cable joint |
| US20180269639A1 (en) * | 2014-10-01 | 2018-09-20 | Ormazabal Protection & Automation, S.L.U. | Insulated High-Voltage Adapter |
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2020
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| CN201478695U (en) * | 2009-05-05 | 2010-05-19 | 苏州阿海珐开关有限公司 | Cable junction plug assembly on bus side of intermediate-pressure switch cabinet |
| US20110256746A1 (en) * | 2010-04-20 | 2011-10-20 | Thomas & Betts International, Inc. | Electrical connector having alignment mechanism |
| JP2012249366A (en) * | 2011-05-25 | 2012-12-13 | J-Power Systems Corp | T-shaped insulation tap for directly connecting equipment and t-shaped terminal connection part for directly connecting equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524120A (en) * | 2021-08-04 | 2021-10-22 | 长春中车轨道车辆有限公司 | CRH5G brake disc reducing bolt assembling platform and assembling process thereof |
| CN113524120B (en) * | 2021-08-04 | 2022-10-28 | 长春中车轨道车辆有限公司 | CRH5G brake disc reducing bolt assembling platform and assembling process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112476341B (en) | 2022-07-12 |
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