CN110542443A - Intelligent sensor for preventing nut from loosening and falling - Google Patents
Intelligent sensor for preventing nut from loosening and falling Download PDFInfo
- Publication number
- CN110542443A CN110542443A CN201910806882.3A CN201910806882A CN110542443A CN 110542443 A CN110542443 A CN 110542443A CN 201910806882 A CN201910806882 A CN 201910806882A CN 110542443 A CN110542443 A CN 110542443A
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- Prior art keywords
- nut
- conducting
- loosening
- outer shell
- falling
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- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses an intelligent sensor for preventing a nut from loosening and falling, which comprises an outer shell, an inner shell column and an early warning assembly, wherein the early warning assembly is fixedly installed on the outer shell, the outer shell and the inner shell column enclose a hollow cylindrical structure, the top end of the whole formed by the outer shell and the inner shell column is provided with an upper cover, an elastic body is arranged between the inner bottom end of the outer shell and the outer surface of the lower end of the upper cover, the elastic body is sleeved on the outer surface of the inner shell column, the outer surface of the lower end of the upper cover is provided with a conducting ring, the inner bottom end of the outer shell is provided with a conducting plate, the top end of the conducting plate is provided with a conducting contact. The sensor adopts a contact type conduction structure, and has the advantages of simple structure, small size, low processing and manufacturing cost and stable service performance.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to an intelligent sensor for preventing a nut from loosening and falling.
Background
The bolt and nut fastening connection form is very widely applied, the nut is one of the most common fasteners, the matched thread is a self-locking thread in principle, the self-locking thread is a thread when a pressure angle of a thread pair is larger than a residual angle of a friction angle, the self-locking thread cannot be loosened due to the existence of axial force, however, working conditions of many occasions of the thread application are severe, the force applied to the thread pair has the axial force and also has the force in other directions, and therefore the loosening of the nut can be generated. The influence of the loosening of the nut cannot be predicted, and serious property loss such as life safety and the like can be caused seriously.
The anti-loosening form of the nut is various, for example, modes such as an anti-loosening nut, a bolt mounting split pin and a double nut are adopted, but the nut can still be loosened after long-time use, and the time for loosening the nut cannot be predicted by people. In the prior art, most of the tightening force measuring sensors are used for detecting the loosening of the nut, but the tightening force measuring sensors are thick, complex in structure, expensive and high in cost, each sensor is provided with a rear-end analog quantity acquisition processor, and if a plurality of sensors are combined, an early warning judgment system is complex.
Aiming at the problems in the related art, an intelligent sensor for preventing a nut from loosening and falling is provided.
Disclosure of Invention
Technical problem to be solved
aiming at the defects of the prior art, the invention provides the intelligent sensor for preventing the nut from loosening and falling, which has the advantages of sensing the nut loosening phenomenon, sending out a warning signal and further preventing the nut from falling, thereby solving the problems in the background art.
(II) technical scheme
In order to realize the advantages of sensing the loosening phenomenon of the nut, sending out a warning signal and further preventing the nut from falling off, the invention adopts the following specific technical scheme:
The utility model provides a prevent not hard up intelligent sensor who drops of nut, includes shell body, shell inner prop and early warning subassembly, early warning subassembly fixed mounting is on the shell body, shell body and shell inner prop enclose into a hollow cylinder structure, the holistic top of shell body and shell inner prop constitution is provided with the upper cover, be provided with the elastomer between the lower extreme surface of the inside bottom of shell body and upper cover, just the elastomer cover is established at shell inner prop surface, the lower extreme surface of upper cover is provided with the conducting ring, the inside bottom of shell body is provided with the conducting strip, just the top of conducting strip is provided with conductive contact, conducting strip and conductive contact electric connection, the input/output end electric connection of conducting strip has two core wires.
Furthermore, the number of the conducting strips and the number of the conducting contacts are set to be two, and the conducting strips and the conducting contacts are symmetrically distributed on two sides of the elastic body.
Furthermore, the number of the conducting rings is two, and the conducting rings are positioned right above the conducting contacts.
Furthermore, an outgoing line sheath is arranged on the outer shell, and the two-core lead penetrates through the outgoing line sheath and extends out of the outer shell.
Further, the upper end of the elastic body is pressed against the top end of the inner surface of the upper cover in a normal state.
(III) advantageous effects
Compared with the prior art, the invention provides an intelligent sensor for preventing a nut from loosening and falling, which has the following beneficial effects:
The contact type conduction structure is adopted, the structure is simple, the use thickness is smaller than that of the existing sensor, the principle structure is simple, an analog quantity acquisition processor is not required to be configured, the cost is low, and the use performance is stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of an intelligent sensor for preventing a nut from loosening and falling off in a nut fastening state in the present embodiment;
Fig. 2 is a schematic structural view of an intelligent sensor for preventing the nut from loosening and falling off in the loosening state of the nut in the embodiment.
In the figure:
1. An elastomer; 2. conducting rings; 3. a conductive contact; 4. a conductive sheet; 5. an outer housing; 6. an upper cover; 7. a wire outlet sheath; 8. two-core wires; 9. the shell is provided with an inner column.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to an embodiment of the invention, an intelligent sensor for preventing a nut from loosening and falling is provided.
Referring to the drawings and the detailed description, as shown in fig. 1-2, an intelligent sensor for preventing a nut from loosening and falling according to an embodiment of the present invention includes an outer shell 5, an inner shell column 9 and an early warning assembly (not shown in the drawings), where the outer shell 5 and the inner shell column 9 enclose a hollow cylindrical structure, the outer shell 5 and the inner shell column 9 form an integral body and are sleeved on an outer surface of a stud, an upper cover 6 is disposed at a top end of the integral body formed by the outer shell 5 and the inner shell column 9, the upper cover 6 is disposed on a lower surface of the nut, an elastic body 1 is disposed between a bottom end inside the outer shell 5 and a lower end outer surface of the upper cover 6, an upper end of the elastic body 1 abuts against a top end of an inner surface of the upper cover 6 in a normal state, the elastic body 1 is sleeved on an outer surface of the inner shell column 9, a lower end outer surface of, and the top of conducting strip 4 is provided with conductive contact 3, conducting strip 4 and conductive contact 3 electric connection, the input/output end electric connection of conducting strip 4 has two core wires 8, be provided with the sheath 7 of being qualified for the next round of competitions on the shell body 5, the sheath 7 of being qualified for the next round of competitions of passing of two core wires 8 extends outside shell body 5, the contact position of two core wires 8 and shell body 5 is protected, reduce the friction, early warning subassembly fixed mounting is on shell body 5, insert the sensor internal circuit, the preferred bee calling organ and pilot lamp of early warning subassembly.
The quantity of conducting strip 4 and conductive contact 3 all sets up to two sets ofly, and conducting strip 4 and conductive contact 3 symmetric distribution are in the both sides of elastomer 1, and the quantity of conducting ring 2 sets up to two sets ofly, and conducting ring 2 is located conductive contact 3 directly over, and this sensor adopts conducting ring 2 and conductive contact 3 contact mode of switching on, avoids because the nut screws up the phenomenon that the contact that the in-process drove 6 rotations of upper cover and lead to switches on the inefficacy.
In the intelligent sensor electrifying use process for preventing the nut from loosening and falling, when the nut loosens, the early warning device carried by the sensor changes the original fastening display state to send out a loosening early warning signal, and the nut state can be intuitively observed on site according to the state of the early warning device.
In the intelligent sensor electrifying use process for preventing the nut from loosening and falling, when the nut loosens, the sensor provides loosening signals for the back-end processing circuit in an on-off circuit mode, and the background system gives early warning.
in the power-on use process of the intelligent sensor for preventing the nut from loosening and falling, when the nut is loosened, the early warning device carried by the sensor changes the original fastening display state to send out a loosening early warning signal, meanwhile, the sensor sends out the loosening early warning signal to the background system, and the background system sends out early warning; the method can realize the function of early warning on site and background at the same time.
The working principle is as follows: as shown in fig. 1, when the nut is in a fastened state, the elastic body 1 is compressed, the conductive ring 2 descends along with the upper cover 6 to be in contact communication with the conductive contact 3, the conductive contact 3 is in a compressed state, the two-core wire 8 is conducted with the conductive ring 2 through the conductive sheet 4 and the conductive contact 3, and the sensor sends out a nut fastening signal; as shown in fig. 2, when the nut is loosened to a certain state, the elastic body 1 rebounds to prop up the upper cover 6 to drive the conductive ring 2 to leave the conductive contact 3, the conductive sheet 4, the conductive contact 3 and the conductive ring 2 are disconnected, and the sensor sends out a nut loosening warning signal.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An intelligent sensor for preventing a nut from loosening and falling is characterized by comprising an outer shell (5), an inner shell column (9) and an early warning assembly, wherein the early warning assembly is fixedly installed on the outer shell (5), the outer shell (5) and the inner shell column (9) are enclosed into a hollow cylindrical structure, the top end of the whole body formed by the outer shell (5) and the inner shell column (9) is provided with an upper cover (6), an elastic body (1) is arranged between the bottom end inside the outer shell (5) and the outer surface of the lower end of the upper cover (6), the elastic body (1) is sleeved on the outer surface of the inner shell column (9), the outer surface of the lower end of the upper cover (6) is provided with a conducting ring (2), the bottom end inside the outer shell (5) is provided with a conducting plate (4), the top end of the conducting plate (4) is provided with a conducting contact (3), and the conducting plate (4, the input/output end of the conducting strip (4) is electrically connected with a two-core conducting wire (8).
2. The intelligent sensor for preventing the nut from loosening and falling off according to claim 1, wherein the number of the conducting strips (4) and the conducting contacts (3) is two, and the conducting strips (4) and the conducting contacts (3) are symmetrically distributed on two sides of the elastic body (1).
3. The intelligent sensor for preventing the nut from loosening and falling off as claimed in claim 2, wherein the number of the conductive rings (2) is set to two groups, and the conductive rings (2) are located right above the conductive contacts (3).
4. The intelligent sensor for preventing the nut from loosening and falling off according to claim 1, wherein an outlet sheath (7) is arranged on the outer shell (5), and the two-core lead (8) passes through the outlet sheath (7) and extends out of the outer shell (5).
5. The intelligent sensor for preventing the nut from loosening and falling off as claimed in claim 1, wherein the upper end of the elastic body (1) is pressed against the top end of the inner surface of the upper cover (6) in a normal state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806882.3A CN110542443A (en) | 2019-08-29 | 2019-08-29 | Intelligent sensor for preventing nut from loosening and falling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806882.3A CN110542443A (en) | 2019-08-29 | 2019-08-29 | Intelligent sensor for preventing nut from loosening and falling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542443A true CN110542443A (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910806882.3A Pending CN110542443A (en) | 2019-08-29 | 2019-08-29 | Intelligent sensor for preventing nut from loosening and falling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110542443A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362327A (en) * | 2020-11-12 | 2021-02-12 | 重庆大学 | Application method of intelligent threaded fastener |
| CN113380013A (en) * | 2021-06-09 | 2021-09-10 | 重庆大学 | Bolt pre-tightening force alarm ring piece with installation prompting function and installation method thereof |
| CN115376288A (en) * | 2021-05-20 | 2022-11-22 | 广东博智林机器人有限公司 | Fastener loosening monitoring system and fastener loosening monitoring method |
| CN113380012B (en) * | 2021-06-09 | 2023-11-07 | 重庆大学 | Contact type fixed-load intelligent early warning nut and installation method thereof |
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| CN2671249Y (en) * | 2003-10-28 | 2005-01-12 | 刘建秋 | Mechanical alarming devices |
| JP2008111468A (en) * | 2006-10-30 | 2008-05-15 | Nsk Ltd | Ball-screw device, its abrasion-loss detection method, and electric injection-molding machine provided with it |
| CN201622662U (en) * | 2010-04-09 | 2010-11-03 | 刘旭东 | Nut anti-theft alarm device |
| CN104100142A (en) * | 2014-07-24 | 2014-10-15 | 黄桂平 | Split mechanical combination door lock with function of alarming |
| CN104851246A (en) * | 2015-05-26 | 2015-08-19 | 重庆大学 | Device used to monitor bolt fracture or looseness |
| CN207909315U (en) * | 2018-03-26 | 2018-09-25 | 张阳 | A kind of prior-warning device of anti-nut loosening |
| CN211317342U (en) * | 2019-08-29 | 2020-08-21 | 无锡必创传感科技有限公司 | Intelligent sensor for preventing nut from loosening and falling |
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2019
- 2019-08-29 CN CN201910806882.3A patent/CN110542443A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2671249Y (en) * | 2003-10-28 | 2005-01-12 | 刘建秋 | Mechanical alarming devices |
| JP2008111468A (en) * | 2006-10-30 | 2008-05-15 | Nsk Ltd | Ball-screw device, its abrasion-loss detection method, and electric injection-molding machine provided with it |
| CN201622662U (en) * | 2010-04-09 | 2010-11-03 | 刘旭东 | Nut anti-theft alarm device |
| CN104100142A (en) * | 2014-07-24 | 2014-10-15 | 黄桂平 | Split mechanical combination door lock with function of alarming |
| CN104851246A (en) * | 2015-05-26 | 2015-08-19 | 重庆大学 | Device used to monitor bolt fracture or looseness |
| CN207909315U (en) * | 2018-03-26 | 2018-09-25 | 张阳 | A kind of prior-warning device of anti-nut loosening |
| CN211317342U (en) * | 2019-08-29 | 2020-08-21 | 无锡必创传感科技有限公司 | Intelligent sensor for preventing nut from loosening and falling |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362327A (en) * | 2020-11-12 | 2021-02-12 | 重庆大学 | Application method of intelligent threaded fastener |
| CN115376288A (en) * | 2021-05-20 | 2022-11-22 | 广东博智林机器人有限公司 | Fastener loosening monitoring system and fastener loosening monitoring method |
| CN113380013A (en) * | 2021-06-09 | 2021-09-10 | 重庆大学 | Bolt pre-tightening force alarm ring piece with installation prompting function and installation method thereof |
| CN113380013B (en) * | 2021-06-09 | 2023-11-03 | 重庆大学 | Bolt pretightening force alarm ring piece with installation prompt function and installation method thereof |
| CN113380012B (en) * | 2021-06-09 | 2023-11-07 | 重庆大学 | Contact type fixed-load intelligent early warning nut and installation method thereof |
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