CN113108977A - Sensor for detecting screw looseness - Google Patents
Sensor for detecting screw looseness Download PDFInfo
- Publication number
- CN113108977A CN113108977A CN202110453525.0A CN202110453525A CN113108977A CN 113108977 A CN113108977 A CN 113108977A CN 202110453525 A CN202110453525 A CN 202110453525A CN 113108977 A CN113108977 A CN 113108977A
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- China
- Prior art keywords
- fixed
- sensor
- detecting
- fixing
- pipe
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Classifications
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- 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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/187—Machine fault alarms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a sensor for detecting screw looseness, which comprises at least one fixed shell, a following magnet and a detection mechanism, wherein the detection mechanism comprises a fixed block, a reed pipe and a signal wire, the signal wire is connected with the reed pipe, the reed pipe is fixed on the inner side of the fixed block, the fixed block is fixed in a fixed through hole in the side face of the fixed shell, the following magnet is attached to the side face of a bolt, and the following magnet and the reed pipe are arranged oppositely. The sensor for detecting the loosening of the screw has the advantages of being simple in structure, convenient to install, long in service life and low in cost, and detecting whether the bolt is loosened in a non-contact mode.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a sensor for detecting screw looseness.
Background
The tower stem of the wind power generation equipment consists of a plurality of sections of steel pipes which are connected through flanges. Due to vibration or environmental influence, bolt looseness often occurs, and great potential safety hazards can be caused if the bolt is loosened. The existing bolt looseness detection generally adopts mechanical parts, the mechanical parts are fatigue along with the time, the detection failure is caused, the service life is short, the installation is inconvenient, the structure is complex, and the cost is high.
Disclosure of Invention
The invention aims to provide a sensor for detecting screw looseness, which detects whether a bolt is loosened in a non-contact manner, and has the advantages of simple structure, convenience in installation, long service life and low cost.
In order to achieve the purpose, the invention provides a sensor for detecting screw looseness, which comprises at least one fixed shell, a following magnet and a detection mechanism, wherein the detection mechanism comprises a fixed block, a reed pipe and a signal wire, the signal wire is connected with the reed pipe, the reed pipe is fixed on the inner side of the fixed block, the fixed block is fixed in a fixed through hole in the side face of the fixed shell, the following magnet is attached to the side face of a bolt, and the following magnet and the reed pipe are arranged oppositely.
Preferably, the reed pipe is fixedly connected with the fixing block through a telescopic rod, the fixing block is in threaded connection with the fixing through hole, and the signal wire penetrates through the fixing block and is connected with the controller.
Preferably, the telescopic link includes internal thread pole and external screw thread pole, internal thread pole set up in the external screw thread pole, external screw thread pole with the regulation hole threaded connection of fixed block.
Preferably, the inner threaded rod is fixedly connected with the reed pipe through a fixing head, the fixing head comprises a U-shaped fixing plate and a fixing pipe, the fixing pipe is fixedly connected with the U-shaped fixing plate, and the U-shaped fixing plate is bonded with the reed pipe.
Preferably, the thread bush is established to fixed pipe outside cover, the through-hole has been seted up to fixed pipe, be provided with the ball in the through-hole, the ball with the annular of internal thread pole one end sets up relatively.
Preferably, the bottom of the fixed shell is embedded with a strong magnetic ring, and the side surface of the fixed shell is fixed with a fixed pin.
Therefore, the sensor for detecting the screw looseness with the structure is used for detecting whether the bolt is loosened in a non-contact mode, and is simple in structure, convenient to install, long in service life and low in cost.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a cross-sectional view of a sensor for detecting screw loosening in accordance with the present invention;
FIG. 2 is a schematic structural diagram of a detecting mechanism according to the present invention;
FIG. 3 is a schematic view of a fixing head structure according to the present invention;
fig. 4 is a perspective view of a sensor for detecting screw loosening according to the present invention.
Reference numerals
1. A stationary housing; 2. a ferromagnetic ring; 21. a fixing pin; 3. a follower magnet; 4. a reed switch; 5. a fixed block; 51. an adjustment hole; 6. a signal line; 7. a fixed head; 71. a U-shaped fixing plate; 72. a fixed tube; 721. a threaded sleeve; 722. a ball bearing; 8. a telescopic rod; 81. an inner threaded rod; 811. a ring groove; 82. an externally threaded rod.
Detailed Description
Examples
Fig. 1 is a sectional view of a sensor for detecting screw loosening according to the present invention, fig. 2 is a structural view of a detection mechanism according to the present invention, fig. 3 is a structural view of a fixing head according to the present invention, fig. 4 is a perspective view of a sensor for detecting screw loosening according to the present invention, and as shown in the drawings, a sensor for detecting screw loosening includes at least one fixing housing 1, and the number of the fixing housings 1 is adjusted according to the actual number of bolts. Be provided with detection mechanism on the fixed casing 1, detection mechanism includes fixed block 5, tongue tube 4 and signal line 6, and signal line 6 is connected with tongue tube 4, and tongue tube 4 is fixed in 5 inboards of fixed block, and tongue tube 4 passes through telescopic link 8 and fixed block 5 fixed connection, fixed block 5 and fixed casing 1's fixed through hole threaded connection. The telescopic rod 8 comprises an internal threaded rod 81 and an external threaded rod 82, the internal threaded rod 81 is arranged in the external threaded rod 82, the external threaded rod 82 is connected with the adjusting hole threads 51 of the fixed block 5, and the extension length of the reed pipe 4 can be adjusted according to the actual bolt size. The inner threaded rod 81 is fixedly connected with the reed pipe 4 through the fixing head 7, the fixing head 7 comprises a U-shaped fixing plate 71 and a fixing pipe 72, the fixing pipe 72 is fixedly connected with the U-shaped fixing plate 71, and the U-shaped fixing plate 71 is bonded with the reed pipe 4. The thread sleeve 721 is sleeved on the outer side of the fixed pipe 72, a through hole is formed in the fixed pipe 72, a ball 722 is arranged in the through hole, and the ball 722 is arranged opposite to the annular groove 811 at one end of the internal thread rod 81, so that the direction of the reed pipe 4 can be adjusted after the telescopic rod 8 is rotated. The follow magnet 3 is attached to the side of the bolt and is arranged opposite to the reed switch 4, when the bolt is loosened and rotates, the reed switch 4 sends a switching signal to a subsequent controller to give an alarm, according to the position and the quantity of the concrete actual detection bolt, the signal wire 6 penetrates through the fixed block 5 to be connected with the controller, the detected switching value is connected in series or in parallel through the signal wire 6, and the controller carries out logic judgment to carry out early warning. The bottom of the fixed shell 1 is embedded with a strong magnetic ring 2, the side face of the fixed shell 1 is fixed with a fixed pin 21, the fixed shell 1 is ensured to be adsorbed with a flange or the fixed shell 1 is directly welded on the flange, and the fixed shell 1 is ensured not to move relatively.
Therefore, the sensor for detecting the screw looseness with the structure is used for detecting whether the bolt is loosened in a non-contact mode, and is simple in structure, convenient to install, long in service life and low in cost.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (6)
1. A sensor for detecting screw loosening, comprising at least one stationary housing, characterized in that: still including following magnet and detection mechanism, detection mechanism includes fixed block, tongue tube and signal line, the signal line with the tongue tube is connected, the tongue tube is fixed in the fixed block is inboard, the fixed block is fixed in the fixed through-hole of fixed casing side, follow the attached side at the bolt of magnet, follow magnet with the tongue tube sets up relatively.
2. A sensor for detecting loosening of a screw according to claim 1, wherein: the reed pipe is fixedly connected with the fixing block through a telescopic rod, the fixing block is in threaded connection with the fixing through hole, and the signal wire penetrates through the fixing block and is connected with the controller.
3. A sensor for detecting screw loosening according to claim 2, wherein: the telescopic link includes internal thread pole and external screw thread pole, internal thread pole set up in the external screw thread pole, the external screw thread pole with the regulation hole threaded connection of fixed block.
4. A sensor for detecting screw loosening according to claim 3, wherein: the inner threaded rod is fixedly connected with the reed pipe through a fixing head, the fixing head comprises a U-shaped fixing plate and a fixing pipe, the fixing pipe is fixedly connected with the U-shaped fixing plate, and the U-shaped fixing plate is bonded with the reed pipe.
5. A sensor for detecting screw loosening according to claim 4 wherein: the thread bush is established to fixed pipe outside cover, the through-hole has been seted up to fixed pipe, be provided with the ball in the through-hole, the ball with the annular of internal thread pole one end sets up relatively.
6. A sensor for detecting loosening of a screw according to claim 1, wherein: the bottom of the fixed shell is embedded with a strong magnetic ring, and the side face of the fixed shell is fixed with a fixed pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110453525.0A CN113108977A (en) | 2021-04-26 | 2021-04-26 | Sensor for detecting screw looseness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110453525.0A CN113108977A (en) | 2021-04-26 | 2021-04-26 | Sensor for detecting screw looseness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113108977A true CN113108977A (en) | 2021-07-13 |
Family
ID=76721801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110453525.0A Pending CN113108977A (en) | 2021-04-26 | 2021-04-26 | Sensor for detecting screw looseness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113108977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541733A (en) * | 2022-02-28 | 2022-05-27 | 重庆建工集团股份有限公司 | Pre-assembled operating platform |
-
2021
- 2021-04-26 CN CN202110453525.0A patent/CN113108977A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541733A (en) * | 2022-02-28 | 2022-05-27 | 重庆建工集团股份有限公司 | Pre-assembled operating platform |
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