CN113188707B - Device for rapidly detecting looseness of flange bolt - Google Patents
Device for rapidly detecting looseness of flange bolt Download PDFInfo
- Publication number
- CN113188707B CN113188707B CN202110359828.6A CN202110359828A CN113188707B CN 113188707 B CN113188707 B CN 113188707B CN 202110359828 A CN202110359828 A CN 202110359828A CN 113188707 B CN113188707 B CN 113188707B
- Authority
- CN
- China
- Prior art keywords
- flange
- shaped frame
- bolt
- screw rod
- scale
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a device for rapidly detecting the looseness of a flange bolt, which comprises a connecting part and a detecting part, wherein the connecting part comprises a fixing clamp and is used for connecting a detecting device and a flange; the inspection part comprises a micrometer screw, a U-shaped frame and a measuring scale; the measuring scale is sequentially provided with a fixed scale, a movable scale, a coarse adjusting knob and a fine adjusting knob; the micrometric screw is positioned on the inner side of the U-shaped frame, one end of the outer side of the U-shaped frame is connected with the fixing clamp, and the fixing clamp is fixedly connected with the U-shaped frame through an L-shaped plate; the other end of the outer side of the U-shaped frame is connected with a measuring scale. According to the invention, the inspection by a worker is not needed, the workload of the worker is reduced, the time is saved, and the accuracy of positioning the position of the loosened bolt can be improved.
Description
Technical Field
The invention relates to a device for rapidly detecting looseness of flange bolts, and belongs to the field of mechanical detection equipment.
Background
Bolted connections are widely adopted in engineering practice due to their effectiveness and relatively low construction costs relative to welded connections, so the problem of bolt loosening is also of great concern. During the construction and operation phases, the bolts may be subjected to mechanical shock and vibration, causing the bolts to loosen, thereby threatening the required load bearing capacity of the bolted joint.
In the known documents and patents, the loosening of the bolt is mostly detected by detecting the rotation angle of the nut and the like, and it is rare to detect whether the bolt is loosened by detecting the longitudinal movement of the screw. This approach has the following problem one: the screw is sheared and damaged, the part of the screw, which is in contact with the nut, rotates, the nut does not rotate, and therefore whether the bolt is loosened or not cannot be detected. II, secondly: the nut slips causing the bolt to loosen but the nut does not rotate and the nut does not separate from the upper part of the member.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the existing bolt looseness detection and provides a novel bolt looseness detection scheme.
The invention does not change the structure and the strength of the original bolt, and a device for detecting the bolt looseness is additionally arranged on the outer side of the bolt and is used for detecting the distance from the bottom of the screw rod to the bottom of the flange plate contacted with the nut, and detecting whether the bolt is loosened or not through distance comparison.
The invention provides a device for detecting looseness of a flange bolt, which comprises a connecting part and a detecting part, wherein the connecting part comprises a fixing clamp and is used for connecting a detecting device and a flange; the inspection part comprises a micrometer screw, a U-shaped frame and a measuring scale; an L-shaped plate is arranged at the upper part of one end of the U-shaped frame and is connected with a fixing clamp through the L-shaped plate, a measuring scale is connected to the upper part of the other end of the U-shaped frame, and a fixed scale, a movable scale, a coarse adjusting knob and a fine adjusting knob are sequentially arranged on the measuring scale; a micrometer screw rod is arranged on the inner side of the U-shaped frame and connected with the measuring scale; the flange plate is placed in the L-shaped plate, the nut is positioned in the L-shaped plate, and the screw is positioned in the U-shaped frame; the measurement is carried out by adjusting the micrometer screw of the inspection part to contact with the bottom of the screw of the flange.
Furthermore, the upper end of the L-shaped plate is provided with a small hole for connecting a fixing clamp, and the end part of the fixing clamp is in contact with the flange plate to fix the fixing clamp on the U-shaped frame.
Further, U type frame and dipperstick are equipped with cavity steel connector, and the connector the left side is the micrometer screw rod, and the micrometer screw rod passes the fixed scale of cavity steel connector and the dipperstick on the right and is connected.
Furthermore, the coarse adjustment knob is a rigid sleeve and is sleeved on the fixed scale, the movable scale rotates along with the rotation of the coarse adjustment knob, and the fine adjustment knob performs detailed measurement on the tail end of the fixed graduated scale.
The invention provides a detection method of the device for detecting the looseness of the flange plate bolts, which comprises the following steps: after the installation is successful, carrying out first measurement, and measuring the distance from the bottom of the screw rod of the flange disc to the bottom of the nut by using a measuring ruler; and after the operation is carried out for a period of time, measuring the distance from the bottom of the screw rod to the bottom of the flange plate nut again, comparing the measured distance with the first measured data, and if the front data and the rear data are inconsistent, loosening the bolt relative to the first detection.
The detection method specifically comprises the following steps:
the method comprises the following steps: mounting a detection device at a flange plate bolt to be detected; the flange plate is placed between the L-shaped plate and the U-shaped frame, and the flange plate is fixed with the U-shaped frame of the detection device by using a fixing clamp;
step two: aligning the micrometer screw rod to the bottom of the flange screw rod to prepare for starting to measure the distance;
step three: rotating the coarse adjustment knob to clamp the tested object until the ratchet wheel makes a sound;
step four: rotating the fine adjustment knob to fix the micrometer screw rod, and recording an initial numerical value;
step five: after the operation is carried out for a period of time and when the measurement is needed, the steps II, III and IV are repeated to record newly obtained numerical values;
step six: and comparing the initial value with the newly obtained value, and if the values are inconsistent, judging that the bolt is loosened in comparison with the first detection.
The principle of the detection is as follows: after the device is installed successfully, the distance from the bottom of the screw to the bottom of a plate contacted with the nut is measured for the first time, after the bolt is loosened, the length of the screw in the axial direction is shortened, the fine adjustment knob is rotated, the distance from the bottom of the screw to the plate is measured, the distance is compared with first-time data (the first-time data are measured after the bolt is screwed up and also can be measured after the device is installed), and if the front data and the rear data are inconsistent, the bolt is loosened relative to the first-time detection.
The invention has the beneficial effects that:
(1) Whether the bolt is loosened can be quickly checked;
(2) The change of the axial direction is innovatively provided and detected, the influence factor is less, and the accuracy is high;
(3) Simple structure, convenient operation and strong practicability.
Drawings
FIG. 1 is a front view of the device for detecting loosening of flange bolts according to the present invention.
FIG. 2 is a detection installation diagram of the device for detecting loosening of the flange bolt.
FIG. 3 is a flow chart of the method for detecting flange bolt loosening according to the present invention.
In the figure: the device comprises a fixing clamp 1, a micrometer screw rod 2, a U-shaped frame 3, a fixed scale 4, a movable scale 5, a coarse adjustment knob 6, a fine adjustment knob 7, a nut 8, a flange 9, a screw rod 10 and a hollow steel connector 11.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
Example 1:
as shown in fig. 1 to 2, a device for detecting the loosening of a flange bolt comprises a connecting part and a detecting part, wherein the connecting part comprises a fixing clamp 1 for connecting a detecting device and a flange 9; the inspection part comprises a micrometer screw 2, a U-shaped frame 3 and a measuring scale; an L-shaped plate is arranged at the upper part of one end of the U-shaped frame 3 and is connected with the fixed clamp 1 through the L-shaped plate, a measuring scale is connected at the upper part of the other end of the U-shaped frame 2, and a fixed scale 4, a movable scale 5, a coarse adjusting knob 6 and a fine adjusting knob 7 are sequentially arranged on the measuring scale; a micrometer screw 2 is arranged on the inner side of the U-shaped frame 3, and the micrometer screw 2 is connected with a measuring scale; a flange plate 9 to be detected is placed in the L-shaped plate, a nut 8 of the flange plate is positioned in the L-shaped plate, and a screw 10 of the flange plate is positioned in the U-shaped frame 3; the measurement is carried out by adjusting the micrometer screw 2 of the inspection part to contact with the bottom of the screw 10 of the flange.
Furthermore, the upper end of the L-shaped plate is provided with a small hole for connecting the fixing clamp 1, and the end part of the fixing clamp is in contact with the flange plate 9 to be fixed on the U-shaped frame 3.
Further, U type frame 3 is equipped with cavity steel connector 11 with the dipperstick, and the connector the left side is micrometering screw rod 2, and micrometering screw rod 2 passes cavity steel connector 11 and is connected with the fixed scale 4 of the dipperstick on the right.
Furthermore, the coarse adjustment knob 6 is a rigid sleeve and is sleeved on the fixed scale 4, the movable scale 5 rotates along with the rotation of the coarse adjustment knob 6, and the fine adjustment knob 7 performs detailed measurement at the tail end of the fixed scale 4.
The invention provides a detection method of the device for detecting the looseness of the flange plate bolts, which comprises the following steps: after the installation is successful, measuring for the first time, and measuring the distance from the bottom of the flange screw 10 to the bottom of the nut 8 by using a measuring scale; and after the operation is carried out for a period of time, measuring the distance from the bottom of the screw rod to the bottom of the flange plate nut again, comparing the measured distance with the first measured data, and if the front data and the rear data are inconsistent, loosening the bolt relative to the first detection.
The detection method specifically comprises the following steps:
the method comprises the following steps: mounting a detection device at a bolt of a flange plate 9 to be detected; the flange 9 is placed between the L-shaped plate and the U-shaped frame 3, and the flange 9 and the U-shaped frame 3 of the detection device are fixed by the fixing clamp 1;
step two: aligning the micrometer screw 2 to the bottom of the screw of the flange plate 9 to prepare for measuring the distance;
step three: rotating the coarse adjustment knob 6 until clamping the tested flange bolt until the ratchet wheel makes a sound;
step four: rotating the fine adjustment knob 7 to fix the micrometer screw 2, and recording an initial numerical value;
step five: after the operation is carried out for a period of time and when measurement is needed, the steps II, III and IV are repeated to record newly obtained numerical values;
step six: and comparing the initial value with the newly obtained value, and if the values are inconsistent, judging that the bolt is loosened in comparison with the first detection.
The working principle and the process of the detection device provided by the invention are as follows:
the device is arranged on a bolt to be detected, a micrometric screw is aligned with a screw of a flange bolt to be detected, a coarse adjustment knob is rotated to clamp a detected object until a ratchet wheel makes a sound, then the fine adjustment knob is rotated to fix the micrometric screw, and the reading is recorded as an initial value
And after the bolt is loosened, the rough adjusting knob is rotated again until the ratchet wheel makes a sound until the object to be detected is clamped, then the fine adjusting knob is rotated to fix the micrometer screw, the second data is recorded, the second data is compared with the initial value, and if the front value and the rear value are different, the bolt is loosened when being detected for the first time.
In conclusion, the invention can well solve the problems of safety, economy and the like in the existing scheme, the scheme has low manufacturing cost and high automation degree, further improves the construction efficiency, has small operation radius compared with the existing scheme, has relatively small danger to people and objects on the ground, greatly reduces the potential safety hazard, and is convenient to operate compared with the existing scheme.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that the above examples are not intended to limit the invention in any way and that variations, modifications, equivalents or equivalent arrangements may be resorted to, falling within the scope of the invention.
Claims (6)
1. The utility model provides a detect not hard up device of flange bolt which characterized in that: the detection device comprises a connecting part and a detection part, wherein the connecting part comprises a fixing clamp used for connecting the detection device and a flange plate;
the inspection part comprises a micrometer screw, a U-shaped frame and a measuring scale; an L-shaped plate is arranged at the upper part of one end of the U-shaped frame and is connected with a fixing clamp through the L-shaped plate, a measuring scale is connected to the upper part of the other end of the U-shaped frame, and a fixed scale, a movable scale, a coarse adjustment knob and a fine adjustment knob are sequentially arranged on the measuring scale; a micrometer screw rod is arranged on the inner side of the U-shaped frame and connected with the measuring scale;
the flange plate is placed in the L-shaped plate, the nut is positioned in the L-shaped plate, and the screw is positioned in the U-shaped frame;
the micrometer screw of the inspection part is adjusted to be in contact with the bottom of the screw of the flange plate for measurement;
the device is used for detecting the distance from the bottom of the screw rod to the bottom of the flange plate contacted with the nut, and whether the bolt is loosened or not is detected through distance comparison.
2. The device for detecting loosening of flange bolts according to claim 1, wherein: the upper end of the L-shaped plate is provided with a small hole for connecting a fixing clamp, and the end part of the fixing clamp is in contact with the flange plate to fix the fixing clamp on the U-shaped frame.
3. The device for detecting loosening of flange bolts according to claim 1, wherein: the U type frame is equipped with cavity steel connector with the dipperstick junction, and the connector the left side is the micrometer screw rod, and the micrometer screw rod passes cavity steel connector and is connected with the fixed scale of right dipperstick.
4. The device for detecting loosening of flange bolts according to claim 1, wherein: the coarse adjustment knob is a rigid sleeve and is sleeved on the fixed scale, the movable scale rotates along with the rotation of the coarse adjustment knob, and the fine adjustment knob performs detailed measurement at the tail end of the fixed scale.
5. The method for detecting the device for detecting the loosening of the flange bolt according to any one of claims 1 to 4, which is characterized by comprising the following steps: after the installation is successful, carrying out first measurement, and measuring the distance from the bottom of the screw rod of the flange disc to the bottom of the nut by using a measuring ruler; and after the operation is carried out for a period of time, measuring the distance from the bottom of the screw rod to the bottom of the flange plate nut again, comparing the measured distance with the first measured data, and if the front data and the rear data are inconsistent, loosening the bolt relative to the first detection.
6. The method for detecting the loosening of the flange bolt according to claim 5, comprising the steps of:
the method comprises the following steps: mounting a detection device at a flange plate bolt to be detected; the flange plate is placed between the L-shaped plate and the U-shaped frame, and the flange plate is fixed with the U-shaped frame of the detection device by using a fixing clamp;
step two: aligning the micrometer screw rod to the bottom of the flange screw rod to prepare for starting to measure the distance;
step three: rotating the coarse tuning knob to clamp the object to be tested until the ratchet wheel makes a sound;
step four: rotating the fine adjustment knob to fix the micrometer screw rod, and recording an initial numerical value;
step five: after the operation is carried out for a period of time and when measurement is needed, the steps II, III and IV are repeated to record newly obtained numerical values;
step six: and comparing the initial value with the newly obtained value, and if the values are inconsistent, judging that the bolt is loosened in comparison with the first detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110359828.6A CN113188707B (en) | 2021-04-02 | 2021-04-02 | Device for rapidly detecting looseness of flange bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110359828.6A CN113188707B (en) | 2021-04-02 | 2021-04-02 | Device for rapidly detecting looseness of flange bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113188707A CN113188707A (en) | 2021-07-30 |
| CN113188707B true CN113188707B (en) | 2022-11-25 |
Family
ID=76974686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110359828.6A Active CN113188707B (en) | 2021-04-02 | 2021-04-02 | Device for rapidly detecting looseness of flange bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113188707B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116067555B (en) * | 2023-04-06 | 2023-06-23 | 西南交通大学 | Bolt looseness detection system and method for urban rail transit and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006317288A (en) * | 2005-05-12 | 2006-11-24 | Central Japan Railway Co | Bolt height measuring method and device, bolt looseness determination method, and bolt looseness detection device |
| US9127998B1 (en) * | 2012-09-04 | 2015-09-08 | University Of South Florida | Active ultrasonic method of quantifying bolt tightening and loosening |
| CN206020020U (en) * | 2016-09-12 | 2017-03-15 | 三峡大学 | Bolt looseness tester |
| CN107579364A (en) * | 2017-08-31 | 2018-01-12 | 国网河南省电力公司内乡县供电公司 | A kind of binding post with loosened screw prompt facility |
| CN209311073U (en) * | 2019-01-28 | 2019-08-27 | 大连交通大学 | A kind of bolt fastener loosens experimental provision |
| CN211954195U (en) * | 2020-06-05 | 2020-11-17 | 郑州爱因特电子科技有限公司 | Flange bolt looseness monitoring device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05231824A (en) * | 1992-02-25 | 1993-09-07 | Ishikawajima Harima Heavy Ind Co Ltd | Method for detecting loosened state of tightened bolt during transportation |
| CN205175670U (en) * | 2015-11-18 | 2016-04-20 | 森特士兴集团股份有限公司 | Not hard up management system that detects of intelligence roofing fastener |
| CN107478132A (en) * | 2017-09-15 | 2017-12-15 | 利丰海洋工程（深圳）有限公司 | Bolt fastens verifying attachment |
| CN107907096B (en) * | 2017-11-27 | 2020-08-07 | 北京中元瑞讯科技有限公司 | Bolt looseness online detection sensing device based on strain type principle and detection method thereof |
| CN210293055U (en) * | 2019-07-01 | 2020-04-10 | 深圳航空标准件有限公司 | Tool for detecting thickness of screw head |
| CN110345187B (en) * | 2019-07-17 | 2020-09-29 | 太原理工大学 | Composite self-resetting energy dissipation and shock absorption device and using method thereof |
| CN211373400U (en) * | 2019-12-30 | 2020-08-28 | 佳仕传动科技(天津)有限公司 | Positioning detection device of ball screw |
| CN211401237U (en) * | 2020-02-28 | 2020-09-01 | 浙江天煌科技实业有限公司 | Ultrasonic-based bolt looseness real-time monitoring experiment device |
| CN111692946A (en) * | 2020-06-28 | 2020-09-22 | 江苏核电有限公司 | Device and method for measuring elongation of back wheel bolt of steam turbine rotor |
| CN112097706B (en) * | 2020-08-24 | 2021-12-21 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Wind power tower cylinder flange bolt looseness real-time monitoring system and early warning method |
-
2021
- 2021-04-02 CN CN202110359828.6A patent/CN113188707B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006317288A (en) * | 2005-05-12 | 2006-11-24 | Central Japan Railway Co | Bolt height measuring method and device, bolt looseness determination method, and bolt looseness detection device |
| US9127998B1 (en) * | 2012-09-04 | 2015-09-08 | University Of South Florida | Active ultrasonic method of quantifying bolt tightening and loosening |
| CN206020020U (en) * | 2016-09-12 | 2017-03-15 | 三峡大学 | Bolt looseness tester |
| CN107579364A (en) * | 2017-08-31 | 2018-01-12 | 国网河南省电力公司内乡县供电公司 | A kind of binding post with loosened screw prompt facility |
| CN209311073U (en) * | 2019-01-28 | 2019-08-27 | 大连交通大学 | A kind of bolt fastener loosens experimental provision |
| CN211954195U (en) * | 2020-06-05 | 2020-11-17 | 郑州爱因特电子科技有限公司 | Flange bolt looseness monitoring device |
Non-Patent Citations (3)
| Title |
|---|
| Research articleFull text access;Anirban Bhattacharya, et al.;《Mechanism and Machine Theory》;20100831;全文 * |
| 种植义齿部件松动的试验研究Ⅰ.力学模型的建立和基台螺丝疲劳寿命的测定;李四群等;《口腔医学纵横》;20011130(第04期);全文 * |
| 紧固件防松性能振动试验台的研制;叶涛等;《矿山机械》;20160410(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113188707A (en) | 2021-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113188707B (en) | Device for rapidly detecting looseness of flange bolt | |
| CN111043944A (en) | In-situ calibration device for eddy current displacement sensor | |
| CN211085095U (en) | Eddy current displacement sensor normal position calibration device | |
| CN200952931Y (en) | Two-dimensional measuring instrument for irregular and nonplanar | |
| US20130152411A1 (en) | Method for determining defects in a wind turbine blade root attachment and measuring tool for carrying out such method | |
| CN210154458U (en) | Checking fixture for rapidly detecting size of part | |
| CN111879208A (en) | Wheel offset distance measuring gauge | |
| CN207423506U (en) | Wheel nut seat intensity detecting device | |
| CN212778999U (en) | Tangential displacement measuring device for shield segment joint | |
| CN109000548A (en) | The coaxality measuring mechanism and method of crankshaft end and interim abutment shaft | |
| CN106813556B (en) | Adjusting device, measuring device comprising adjusting device and measuring method | |
| CN218411215U (en) | Inclination sensor detection device | |
| CN209961099U (en) | Multipurpose L-shaped plate checking fixture | |
| CN210220927U (en) | Flange pitch detection tool | |
| CN107283142B (en) | Method for installing, adjusting and detecting seventh shaft of robot | |
| CN212989033U (en) | Deformation detection device is remained to well lid | |
| CN220516555U (en) | Piston outer ring size detection clamping device | |
| CN215865022U (en) | Calibrating device for electrical out-of-roundness measuring instrument | |
| CN215598435U (en) | Connecting device for online detection of coiled tubing | |
| CN213932304U (en) | Detection tool for measuring shaft diameter of arc eccentric bolt | |
| CN113970280B (en) | Measuring method for grinding dimensional accuracy of machine tool guide rail | |
| CN216927068U (en) | Automobile angle radar positioning tool | |
| CN220153421U (en) | Automobile buffer bushing inner pipe end face detection go-no-go gauge | |
| CN216348242U (en) | Measuring device for measuring space angle and distance | |
| CN217819672U (en) | Hardness detection device is used in automobile piston processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |