CN203738689U - Device used for measuring extension amount of bolt - Google Patents
Device used for measuring extension amount of bolt Download PDFInfo
- Publication number
- CN203738689U CN203738689U CN201420134895.3U CN201420134895U CN203738689U CN 203738689 U CN203738689 U CN 203738689U CN 201420134895 U CN201420134895 U CN 201420134895U CN 203738689 U CN203738689 U CN 203738689U
- Authority
- CN
- China
- Prior art keywords
- measuring
- shaft coupling
- hollow stud
- measuring stick
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001808 coupling Effects 0.000 claims description 28
- 238000010168 coupling process Methods 0.000 claims description 28
- 238000005859 coupling reaction Methods 0.000 claims description 28
- 210000004907 Glands Anatomy 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The utility model relates to a device used for measuring the extension amount of a bolt. The device comprises a coupler. A connection part of the coupler is a hollow stud, coupler connection nuts are arranged at the two ends of the hollow stud, and a measuring bar is arranged inside the hollow stud. The two ends of the measuring bar extend out of the outer sides of the coupler connection nuts in a suspension mode respectively, one end of the measuring bar is connected with a measuring sleeve, the measuring sleeve is provided with a dial indicator, a measuring head of the dial indicator points to the end of the measuring bar, and the other end of the measuring bar is fixed to the hollow stud through a pressing nut and a pressing cover. The device further comprises a spanner matched with the coupler connection nuts. According to the technical scheme, the measuring bar is arranged in the center of the hollow stud, the extension amount of the measuring bar can be measured through combination of the measuring sleeve and the dial indicator, and therefore the extension amount of the bolt can be measured.
Description
Technical field
The utility model relates to a kind of for measuring the device of bolt elongate amount.
Background technology
In large-size thermal power plant Turbo-generator Set installation process, shaft coupling connects employing hollow stud, without measurement specific purpose tool in the situation that, bolt initial data cannot accurately be measured, and measure and must in fastening bolt, connect and carry out, be interrupted once the reason such as be given a shock, the data of measurement just lose accuracy; In addition, shaft coupling locus of living in is little, in the situation that not coiling rotor, once symmetrical fastening tight 2 bolts only, and designing requirement for the first time critical 8 bolts again concentricity of coupling is carried out to preliminary surveying, so will coil rotor, but the moving rotor of tight 2 bolt hour indicators, often, because Tightening moment is inadequate, cause concentricity of coupling overproof.
Utility model content
It is a kind of for measuring the device of bolt elongate amount that the purpose of this utility model is to provide,
For achieving the above object, the utility model has adopted following technical scheme: comprise shaft coupling, the connector of shaft coupling is hollow stud, the two ends of hollow stud are provided with shaft coupling attaching nut, the inside of hollow stud is provided with measuring stick, the two ends of measuring stick are overhung at respectively shaft coupling attaching nut outside, one end of measuring stick is connected with measurement sleeve, measure on sleeve and be provided with dial gauge, and the gage outfit of dial gauge points to the end of measuring stick, the other end of measuring stick is fixed by clamp nut and gland and hollow stud, this device also comprises the spanner matching with shaft coupling attaching nut.
Described measuring stick is polished rod structure with the end that measurement sleeve matches, and the end that described measuring stick matches with clamp nut and gland is external thread structure.
Described spanner is connected with power set, and described power set are chain block.
The end that described spanner matches with shaft coupling attaching nut is circular ring structure, and a side end face of circular ring structure is the shiny surface of being combined with gland, and the opposite side end face of circular ring structure is the groove surface matching with shaft coupling attaching nut.
As shown from the above technical solution, the utility model is placed in measuring stick at the center of hollow stud, can measure the elongation of measuring stick by measuring the combination of sleeve and dial gauge, thereby draw the elongation of bolt, simultaneously by the cooperation of spanner, can in the situation that not coiling rotor, realize fastening to all bolts, this device is easy to operate, can make again fastening torque of bolt consistent, ensure the accuracy that concentricity of coupling is measured.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that the utility model spanner matches with power set.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1 a kind of for measuring the device of bolt elongate amount, comprise shaft coupling 1, the connector of shaft coupling 1 is hollow stud 2, the two ends of hollow stud 2 are provided with shaft coupling attaching nut 3, the inside of hollow stud 2 is provided with measuring stick 4, the two ends of measuring stick 4 are overhung at respectively shaft coupling attaching nut 3 outsides, one end of measuring stick 4 is connected with measures sleeve 5, measure on sleeve 5 and be provided with dial gauge 6, and the gage outfit of dial gauge 6 points to the end of measuring stick 4, the other end of measuring stick 4 is fixing with hollow stud 2 by clamp nut 7 and gland 8, this device also comprises the spanner 9 matching with shaft coupling attaching nut 3.
Further, measuring stick 4 is polished rod structure with the end that measurement sleeve 5 matches, and the end that measuring stick 4 matches with clamp nut 7 and gland 8 is external thread structure.
Preferably, as shown in Figure 2, spanner 9 is connected with power set 10, and power set 10 are chain block.Because needing tight 8 bolts for the first time, designing requirement just can carry out the preliminary surveying of rotor concentricity, this device coordinates with spanner by the motor car device 10 by outside, can be in the situation that not coiling rotor, carry out fastening to all bolts, so both ensured the design Tightening moment of bolt, can make again the concentricity of shaft coupling not change, not only save the set-up time, also promote the installation accuracy of unit.Power set 10 can adopt chain block or other devices carry out.
Further, the end that spanner 9 matches with shaft coupling attaching nut 3 is circular ring structure, and a side end face of circular ring structure is and the shiny surface of gland 8 combinations that the opposite side end face of circular ring structure is the groove surface matching with shaft coupling attaching nut 3.
Operation principle of the present utility model is:
Measuring stick is fixed on by clamp nut and gland in the centre bore of hollow stud 2, while using spanner 9 fastening coupling bolt, the elongation of measuring stick is consistent with the elongation of hollow stud 2, measure the elongation of measuring stick by the dial gauge on measurement sleeve, thereby draw the elongation of hollow stud 2, by looking into design moment and bolt elongate discharge curve, can determine whether Tightening moment meets design requirement again; Simultaneously by the cooperation of spanner, can in the situation that not coiling rotor, realize fastening to all bolts.
Above-described embodiment is described preferred embodiment of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skill in the art make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (4)
1. one kind for measuring the device of bolt elongate amount, comprise shaft coupling (1), the connector of shaft coupling (1) is hollow stud (2), the two ends of hollow stud (2) are provided with shaft coupling attaching nut (3), it is characterized in that: the inside of hollow stud (2) is provided with measuring stick (4), the two ends of measuring stick (4) are overhung at respectively shaft coupling attaching nut (3) outside, one end of measuring stick (4) is connected with measures sleeve (5), measure on sleeve (5) and be provided with dial gauge (6), and the gage outfit of dial gauge (6) points to the end of measuring stick (4), the other end of measuring stick (4) is fixing with hollow stud (2) by clamp nut (7) and gland (8), this device also comprises the spanner (9) matching with shaft coupling attaching nut (3).
2. according to claim 1 for measuring the device of bolt elongate amount, it is characterized in that: described measuring stick (4) is polished rod structure with the end that measurement sleeve (5) matches, and described measuring stick (4) is external thread structure with the end that clamp nut (7) and gland (8) match.
3. according to claim 1 for measuring the device of bolt elongate amount, it is characterized in that: described spanner (9) is connected with power set (10), described power set (10) are chain block.
4. according to claim 1 for measuring the device of bolt elongate amount, it is characterized in that: the end that described spanner (9) matches with shaft coupling attaching nut (3) is circular ring structure, one side end face of circular ring structure is and the shiny surface of gland (8) combination that the opposite side end face of circular ring structure is the groove surface matching with shaft coupling attaching nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134895.3U CN203738689U (en) | 2014-03-24 | 2014-03-24 | Device used for measuring extension amount of bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134895.3U CN203738689U (en) | 2014-03-24 | 2014-03-24 | Device used for measuring extension amount of bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203738689U true CN203738689U (en) | 2014-07-30 |
Family
ID=51338552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420134895.3U Active CN203738689U (en) | 2014-03-24 | 2014-03-24 | Device used for measuring extension amount of bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203738689U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104723092A (en) * | 2015-03-20 | 2015-06-24 | 国家电网公司 | Clamping device and method used for guaranteeing equality of extension lengths of two ends of through bolt |
| CN105313055A (en) * | 2015-10-30 | 2016-02-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Force limiting device for locking circumferential annular groove blade combined block |
| CN107225393A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Compressor auxiliary installation device |
| CN107270849A (en) * | 2017-06-02 | 2017-10-20 | 中国北方发动机研究所(天津) | A kind of engine high-strength bolt elongation test device |
-
2014
- 2014-03-24 CN CN201420134895.3U patent/CN203738689U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104723092A (en) * | 2015-03-20 | 2015-06-24 | 国家电网公司 | Clamping device and method used for guaranteeing equality of extension lengths of two ends of through bolt |
| CN105313055A (en) * | 2015-10-30 | 2016-02-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Force limiting device for locking circumferential annular groove blade combined block |
| CN107225393A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Compressor auxiliary installation device |
| CN107270849A (en) * | 2017-06-02 | 2017-10-20 | 中国北方发动机研究所(天津) | A kind of engine high-strength bolt elongation test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CEEC ANHUI ELECTRIC POWER CONSTRUCTION FIRST ENGIN Free format text: FORMER NAME: ANHUI ELECTRICAL POWER CONSTRUCTION NO.1 COMPANY, CEEC |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 218 camphor Avenue, Hefei hi tech Development Zone of Anhui province 230088 Patentee after: China Energy Engineering Group Anhui No.1 Electric Power Construction Co.,Ltd. Address before: No. 218 camphor Avenue, Hefei hi tech Development Zone of Anhui province 230088 Patentee before: China Energy Construction Group Anhui Power Construction First Engineering Co. |
|
| CP03 | Change of name, title or address |
Address after: 230000 no.218, Xiangzhang Avenue, hi tech Development Zone, Hefei City, Anhui Province Patentee after: China Energy Construction Group Co.,Ltd. Address before: No.218, Xiangzhang Avenue, high tech Development Zone, Hefei City, Anhui Province, 230088 Patentee before: China Energy Engineering Group Anhui No.1 Electric Power Construction Co.,Ltd. |
|
| CP03 | Change of name, title or address |