CN217111434U - Square-neck bolt capable of detecting tightness - Google Patents
Square-neck bolt capable of detecting tightness Download PDFInfo
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- CN217111434U CN217111434U CN202123159964.5U CN202123159964U CN217111434U CN 217111434 U CN217111434 U CN 217111434U CN 202123159964 U CN202123159964 U CN 202123159964U CN 217111434 U CN217111434 U CN 217111434U
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Abstract
The utility model discloses a square neck bolt capable of detecting tightness, which comprises a bolt head and a bolt body, wherein the bottom of the bolt head is cut and extruded to form a square neck part, the bolt body comprises a telescopic part, a detection part and a thread part from top to bottom, the thread part is provided with external threads, one end of the telescopic part is fixedly connected with the square neck part, the other end of the telescopic part is fixedly connected with the detection part, and the other end of the detection part is fixedly connected with the thread part; the detection part comprises a shell, a circuit board, a battery and a pressure sensor are arranged in the shell, the circuit board is electrically connected with the battery, and the pressure sensor is electrically connected with the circuit board. The square neck of this bolt is through cutting crowded shaping for bolt stable quality, and through MEMS pressure sensor's setting, from fastening to not hard up in-process as the bolt, the analog quantity output of sensor can be littleer and smaller, and the elasticity state of bolt can be monitored through MEMS pressure sensor's output signal size, and then judges the elasticity of bolt accurately.
Description
Technical Field
The utility model relates to a fastener field, concretely relates to can detect square neck bolt of elasticity.
Background
With the great application of the half-round square-neck bolt in the fields of engineering machinery, bridge construction, highways and the like, the half-round square-neck bolt is a fastener which is widely applied. Under the environment of long-term vibrations, such as bridge building, engineering machine tool, steel construction factory building etc. the bolt is not hard to avoid not hard up. Early detection of bolt loosening becomes particularly important when it may cause an accident. At present, whether the operating personnel often judges the bolt through regularly patrolling and examining and take place to become flexible, patrol and examine and in time consolidate the bolt when discovering the bolt is not flexible, and the artifical mode of patrolling and examining is consuming time and is hard up, and the efficiency greatly reduced of inspection, can't carry out accurate judgement to the bolt elasticity condition.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a can detect square neck bolt of elasticity, the square neck of this bolt is through cutting crowded shaping for the bolt stable in quality, and through MEMS pressure sensor's setting, from fastening to not hard up in-process when the bolt, the analog output of sensor can be more and more littleer, and the elasticity state of bolt can be monitored through MEMS pressure sensor's output signal size, and then accurately judges the elasticity of bolt.
In order to achieve the above object, the utility model provides a following technical scheme: a square-neck bolt capable of detecting tightness comprises a bolt head and a bolt body, wherein a square neck part is formed at the bottom of the bolt head in a cutting and extruding mode, the bolt body comprises a telescopic part, a detection part and a thread part from top to bottom, external threads are arranged on the thread part, one end of the telescopic part is fixedly connected with the square neck part, the other end of the telescopic part is fixedly connected with the detection part, and the other end of the detection part is fixedly connected with the thread part; the detection part comprises a shell, a circuit board, a battery and a pressure sensor are arranged in the shell, the circuit board is electrically connected with the battery, and the pressure sensor is electrically connected with the circuit board.
On the basis of the above scheme and as a preferable scheme of the scheme: the circuit board comprises a main control circuit and a signal processing circuit, the signal processing circuit comprises an operational amplifier U1, an operational amplifier U2 and an operational amplifier U3, the positive end of the operational amplifier U1 is grounded through a capacitor C1, the output end of the operational amplifier U1 is electrically connected with the negative end of the operational amplifier U2 through a capacitor C2, the positive end of the operational amplifier U2 is grounded, the output end of the operational amplifier C2 is electrically connected with the positive end of the operational amplifier U3, and the output end of the operational amplifier U3 is electrically connected with the main control circuit.
On the basis of the above scheme and as a preferable scheme of the scheme: the negative end of the operational amplifier U1 is electrically connected with the positive end thereof, the negative end of the operational amplifier U2 is electrically connected with the output end thereof through a capacitor C3, and the negative end of the operational amplifier U3 is electrically connected with the positive end of the operational amplifier U1 through a capacitor C4.
On the basis of the above scheme and as a preferable scheme of the scheme: the telescopic part comprises a telescopic rod and a telescopic sleeve, a first limit hole is formed in the telescopic rod, a plurality of second limit holes with different heights are formed in the telescopic sleeve, the first limit hole can be opposite to any one of the second limit holes, an elastic limit block is arranged in the inner space of the telescopic rod, and the elastic limit block passes through the first limit hole and extends out of the telescopic rod, so that the telescopic rod can be clamped in the second limit holes.
On the basis of the above scheme and as a preferable scheme of the scheme: the bolt head is a semicircular bolt head.
On the basis of the above scheme and as a preferable scheme of the scheme: the diameters of the telescopic sleeve, the shell and the threaded part are the same.
On the basis of the above scheme and as a preferable scheme of the scheme: the pressure sensor is a MEMS pressure sensor.
The utility model has the advantages as follows: compared with the prior art, the square neck of this bolt is through cutting crowded shaping (the square neck of traditional square neck bolt passes through cold-heading shaping, easily cause the bolt to pull wrong height not enough, the square neck department is not full scheduling problem), make bolt stable quality, and through MEMS pressure sensor's setting, from fastening to not hard up in-process when the bolt, the analog output of sensor can be littleer and smaller, the elasticity state of bolt can be monitored through MEMS pressure sensor's output signal size, and then judge the elasticity of bolt accurately.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a circuit diagram of the signal processing circuit of the present invention.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, however, the specific embodiments and embodiments described below are only for illustrative purposes and are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 2 of the drawings, in the embodiment, a square-neck bolt capable of detecting tightness includes a bolt head 10 and a bolt body, in this embodiment, the bolt head 10 is preferably a semicircular bolt head, a square neck 11 is formed at the bottom of the bolt head 10 in a cutting and extruding manner, the problem that the bolt is not enough in wrenching height, the square neck is not full and the like is easily caused by cold heading forming of the square neck 11 of the conventional square-neck bolt, and the quality of the bolt is stable by cutting and extruding forming of the square neck 11 of the bolt; the bolt body comprises an expansion part 20, a detection part 30 and a thread part 40 from top to bottom, wherein the thread part 40 is provided with an external thread 41, one end of the expansion part 20 is fixedly connected with the square neck part 11, the other end of the expansion part 20 is fixedly connected with the detection part 30, and the other end of the detection part 30 is fixedly connected with the thread part 40; the detection portion 30 includes a housing, a circuit board, a battery and a pressure sensor are disposed inside the housing, the circuit board is electrically connected to the battery, and the pressure sensor is electrically connected to the circuit board. The telescopic part 20 comprises a telescopic rod 21 and a telescopic sleeve 22, and the diameters of the telescopic sleeve 22, the shell and the threaded part 40 are the same; and this embodiment prefers pressure sensor to be MEMS pressure sensor, measurable quantity bolt fastening force, in the bolt from fastening to not hard up in-process, the analog quantity output of sensor can be littleer and littleer, the elasticity state of bolt can be monitored through MEMS pressure sensor's output signal size, and the master control circuit on the circuit board in this embodiment still is provided with wireless communication module, can carry out signal communication between its and staff's the terminal equipment, the data that the sensor was gathered all can be received by terminal equipment, so whether can take place to become flexible with accurate judgement and monitoring bolt in this alright.
Further, the circuit board further comprises a signal processing circuit, the signal processing circuit comprises an operational amplifier U1, an operational amplifier U2 and an operational amplifier U3, the positive terminal of the operational amplifier U1 is grounded through a capacitor C1, the output terminal of the operational amplifier U1 is electrically connected with the negative terminal of the operational amplifier U2 through a capacitor C2, the positive terminal of the operational amplifier U2 is grounded, the output terminal of the operational amplifier C2 is electrically connected with the positive terminal of the operational amplifier U3, and the output terminal of the operational amplifier U3 is electrically connected with the main control circuit.
Furthermore, the negative terminal of the operational amplifier U1 is electrically connected to the positive terminal thereof, the negative terminal of the operational amplifier U2 is electrically connected to the output terminal thereof through a capacitor C3, and the negative terminal of the operational amplifier U3 is electrically connected to the positive terminal of the operational amplifier U1 through a capacitor C4.
In a possible implementation manner, the telescopic portion 20 includes a telescopic rod 21 and a telescopic tube 22, a first limiting hole 210 is formed in the telescopic rod 21, a plurality of second limiting holes 220 with different heights are formed in the telescopic tube 20, the first limiting hole 210 can be opposite to any one of the second limiting holes 220, an elastic limiting block (not watched in the drawing) is arranged in an inner space of the telescopic rod 21, and the elastic limiting block can be clamped in the second limiting hole 220 when extending out of the telescopic rod 21 through the first limiting hole 210. The telescopic part 20 is arranged, so that the bolt has certain flexibility, and the length can be adjusted according to actual conditions; the structure of the expansion/contraction portion 20 can be regarded as conventional.
In the present embodiment, both the MEMS sensor and the signal processing circuit are regarded as the prior art, and the method for controlling, analyzing and processing data thereof will not be described in detail herein.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a can detect square neck bolt of elasticity which characterized in that: the bolt comprises a bolt head and a bolt body, wherein a square neck part is formed at the bottom of the bolt head in a cutting and extruding mode, the bolt body comprises a telescopic part, a detection part and a threaded part from top to bottom, external threads are arranged on the threaded part, one end of the telescopic part is fixedly connected with the square neck part, the other end of the telescopic part is fixedly connected with the detection part, and the other end of the detection part is fixedly connected with the threaded part; the detection part comprises a shell, a circuit board, a battery and a pressure sensor are arranged in the shell, the circuit board is electrically connected with the battery, and the pressure sensor is electrically connected with the circuit board.
2. The square-neck bolt capable of detecting tightness according to claim 1, wherein: the circuit board comprises a main control circuit and a signal processing circuit, the signal processing circuit comprises an operational amplifier U1, an operational amplifier U2 and an operational amplifier U3, the positive terminal of the operational amplifier U1 is grounded through a capacitor C1, the output terminal of the operational amplifier U1 is electrically connected with the negative terminal of the operational amplifier U2 through a capacitor C2, the positive terminal of the operational amplifier U2 is grounded, the output terminal of the operational amplifier C2 is electrically connected with the positive terminal of the operational amplifier U3, and the output terminal of the operational amplifier U3 is electrically connected with the main control circuit.
3. The square-neck bolt capable of detecting tightness according to claim 2, wherein: the negative end of the operational amplifier U1 is electrically connected with the positive end thereof, the negative end of the operational amplifier U2 is electrically connected with the output end thereof through a capacitor C3, and the negative end of the operational amplifier U3 is electrically connected with the positive end of the operational amplifier U1 through a capacitor C4.
4. The square-neck bolt capable of detecting tightness according to claim 1, wherein: the telescopic part comprises a telescopic rod and a telescopic sleeve, a first limit hole is formed in the telescopic rod, a plurality of second limit holes with different heights are formed in the telescopic sleeve, the first limit hole can be opposite to any one of the second limit holes, an elastic limit block is arranged in the inner space of the telescopic rod, and the elastic limit block passes through the first limit hole and extends out of the telescopic rod, so that the telescopic rod can be clamped in the second limit holes.
5. The square-neck bolt capable of detecting tightness according to claim 1, wherein: the bolt head is a semicircular bolt head.
6. The square-neck bolt capable of detecting tightness according to claim 4, wherein: the diameters of the telescopic sleeve, the shell and the threaded part are the same.
7. The square-neck bolt capable of detecting tightness according to claim 1, wherein: the pressure sensor is a MEMS pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123159964.5U CN217111434U (en) | 2021-12-15 | 2021-12-15 | Square-neck bolt capable of detecting tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123159964.5U CN217111434U (en) | 2021-12-15 | 2021-12-15 | Square-neck bolt capable of detecting tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217111434U true CN217111434U (en) | 2022-08-02 |
Family
ID=82590211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123159964.5U Active CN217111434U (en) | 2021-12-15 | 2021-12-15 | Square-neck bolt capable of detecting tightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217111434U (en) |
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2021
- 2021-12-15 CN CN202123159964.5U patent/CN217111434U/en active Active
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