CN202867493U - Bolt provided with pretightening force detecting ring - Google Patents
Bolt provided with pretightening force detecting ring Download PDFInfo
- Publication number
- CN202867493U CN202867493U CN 201220585044 CN201220585044U CN202867493U CN 202867493 U CN202867493 U CN 202867493U CN 201220585044 CN201220585044 CN 201220585044 CN 201220585044 U CN201220585044 U CN 201220585044U CN 202867493 U CN202867493 U CN 202867493U
- Authority
- CN
- China
- Prior art keywords
- bolt
- fixing rod
- pretightening force
- detecting ring
- detection ring
- 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.)
- Expired - Lifetime
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Abstract
A bolt provided with a pretightening force detecting ring comprises the bolt, the detecting ring, a fixed bar and an adhesion agent. A stepped hole is formed in the axial center of the bolt. The fixed bar is a polished bar, wherein one end of the polished bar is provided with a tapered bar cap. The fixed bar is arranged inside the stepped hole. The adhesion agent is used for fixedly connecting the fixed bar. The detecting ring is arranged on the fixed bar in a sleeved mode and arranged between the bar cap of the fixed bar and a counter bored hole of the bolt. According to the bolt provided with the pretightening force detecting ring, through a method that the detecting ring is touched by hand, reduction or failure of pretightening force of the bolt can be found as soon as possible. The bolt provided with the pretightening force detecting ring has the advantages of being simple in structure and convenient to detect.
Description
Technical field
The utility model relates to technical field of fastening, especially a kind of bolt that is provided with the pretightening force detection ring.
Background technique
In the prior art, can be found everywhere with the be connected fastening means of mechanical parts of bolt, in particular for the connecting bolt of motor on the wind-driven generator and tower cylinder and the connecting bolt of motor and blade, and the connecting bolt that is used for bridge upper connecting rod and bridge arch or bridge floor, all belong to important connection, because these bolts all bear oscillating load, loosening phenomenon is difficult to avoid, and must make regular check on these bolts, and the problem of existence is, the method that how can accomplish with the naked eye to observe or touch with hand, find early the sign of bolt looseness, the workload that not only can reduce to keep in repair is increased work efficiency, also can prevent trouble before it happens, reduce and avoid the generation of contingency.
The model utility content
The purpose of this utility model is a kind of bolt that is provided with the pretightening force detection ring that provides for the deficiencies in the prior art, the utility model is by touching the method for detection ring with hand, the pretightening force that can find bolt reduces or inefficacy, has advantage simple in structure, easy to detect.
The concrete technological scheme that realizes the utility model purpose is:
A kind of bolt that is provided with the pretightening force detection ring, its characteristics comprise bolt, detection ring, fixing rod and Bond, and the axle center of described bolt is provided with step hole, and step hole is made of fixed hole, transitional pore and counterbore, and fixing rod is the polished rod that an end is provided with pole cap; Described fixing rod is located in the step hole, and its polished rod termination embeds in the fixed hole of step hole, and Bond is connected fixing rod polished rod termination and fixed hole, and detection ring is sleeved on the fixing rod, and between the counterbore of the pole cap of fixing rod and bolt.
The utility model can find early that by touch the method for detection ring with hand the pretightening force of bolt reduces or inefficacy, has advantage simple in structure, easy to detect.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the local structure for amplifying schematic diagram in the A place of Fig. 1;
Fig. 3 is use view of the present utility model;
Fig. 4 is another use view of the present utility model.
Embodiment
Consult Fig. 1, Fig. 2, the utility model comprises bolt 1, detection ring 2, fixing rod 3 and Bond 4, and the axle center of described bolt 1 is provided with step hole, and step hole is made of fixed hole 12, transitional pore 13 and counterbore 14, and fixing rod 3 is the polished rod that an end is provided with pole cap 31; Described fixing rod 3 is located in the step hole, its polished rod termination embeds in the fixed hole 12 of step hole, Bond 4 is connected fixing rod 3 polished rod terminations and fixed hole 12, and detection ring 2 is sleeved on the fixing rod 3, and between the counterbore 14 of the pole cap 31 of fixing rod 3 and bolt 1.
The assembling of dispatching from the factory of the present utility model:
The utility model is to use like this:
After 1 pair of mechanical parts enforcement of bolt is fastening, under the effect of clamping force, bolt 1 produces stress and corresponding axial strain, because the polished end of fixing rod 3 is fixed in the fixed hole 12 of step hole, when bolt 1 produces the strain elongation, fixing rod 3 does not stress, do not extend yet, and the △ L value that keeps between the counterbore 14 of the pole cap 31 of fixing rod 3 and bolt 1 reduces, be that distance between the counterbore 14 of the pole cap 31 of fixing rod 3 and bolt 1 diminishes, at this moment, the detection ring 2 between pole cap 31 and counterbore 14 is compacted, and detection ring 2 can not rotate, expression bolt 1 has been tightened, is in normal working; Otherwise, when bolt 1 generation is loosening, reduce and even disappear with clamping force, the axial strain that bolt 1 produces disappears, the △ L value change between the pole cap 31 that causes fixing rod 3 and the counterbore 14 of bolt 1 greatly, at this moment, detection ring 2 between pole cap 31 and counterbore 14 is extracted, whether loosening by touching and rotate detection ring 2, can judge whether bolt 1 is loosening, and whether working state is normal.
Consult Fig. 3, the utility model detection ring 2 is located at the structural representation of the bolt the other end.
Consult Fig. 4, the utility model detection ring 2 is located at the structural representation of stud bolt.
Claims (1)
1. bolt that is provided with the pretightening force detection ring, it is characterized in that it comprises bolt (1), detection ring (2), fixing rod (3) and Bond (4), the axle center of described bolt (1) is provided with step hole, step hole is made of fixed hole (12), transitional pore (13) and counterbore (14), and fixing rod (3) is the polished rod that an end is provided with pole cap (31); Described fixing rod (3) is located in the step hole, its polished rod termination embeds in the fixed hole (12) of step hole, Bond (4) is connected fixing rod (3) polished rod termination and fixed hole (12), detection ring (2) is sleeved on the fixing rod (3), and is positioned between the counterbore (14) of the pole cap (31) of fixing rod (3) and bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585044 CN202867493U (en) | 2012-11-08 | 2012-11-08 | Bolt provided with pretightening force detecting ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585044 CN202867493U (en) | 2012-11-08 | 2012-11-08 | Bolt provided with pretightening force detecting ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867493U true CN202867493U (en) | 2013-04-10 |
Family
ID=48034215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220585044 Expired - Lifetime CN202867493U (en) | 2012-11-08 | 2012-11-08 | Bolt provided with pretightening force detecting ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867493U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872092A (en) * | 2015-12-11 | 2017-06-20 | 天津航天瑞莱科技有限公司 | A kind of method of testing of dynamometry bolt and axial force |
| CN107339309A (en) * | 2017-06-30 | 2017-11-10 | 上海应谱科技有限公司 | A kind of pretightning force monitoring system of intelligent fastener |
| CN107588079A (en) * | 2017-09-06 | 2018-01-16 | 河海大学 | It can monitor and control the friction type high strength bolt, connector and its construction method of pretension |
| CN108571504A (en) * | 2018-05-08 | 2018-09-25 | 上海威纳工程技术有限公司 | Accurate pretension bolt |
| CN109716073A (en) * | 2016-06-21 | 2019-05-03 | 智能元件技术公司 | Monitor system and method |
-
2012
- 2012-11-08 CN CN 201220585044 patent/CN202867493U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872092A (en) * | 2015-12-11 | 2017-06-20 | 天津航天瑞莱科技有限公司 | A kind of method of testing of dynamometry bolt and axial force |
| CN109716073A (en) * | 2016-06-21 | 2019-05-03 | 智能元件技术公司 | Monitor system and method |
| CN107339309A (en) * | 2017-06-30 | 2017-11-10 | 上海应谱科技有限公司 | A kind of pretightning force monitoring system of intelligent fastener |
| CN107588079A (en) * | 2017-09-06 | 2018-01-16 | 河海大学 | It can monitor and control the friction type high strength bolt, connector and its construction method of pretension |
| CN108571504A (en) * | 2018-05-08 | 2018-09-25 | 上海威纳工程技术有限公司 | Accurate pretension bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |