CN211820276U - Anchor bolt with function of detecting stress state - Google Patents
Anchor bolt with function of detecting stress state Download PDFInfo
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- CN211820276U CN211820276U CN201920852117.0U CN201920852117U CN211820276U CN 211820276 U CN211820276 U CN 211820276U CN 201920852117 U CN201920852117 U CN 201920852117U CN 211820276 U CN211820276 U CN 211820276U
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- bolt
- countersunk head
- pressure sensor
- anchor bolt
- function
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Abstract
The utility model provides an crab-bolt with detect atress state, including expand tube, bolt and nut, the expand tube cup joints outside the bolt, and bolt one end has linked firmly the countersunk head post, and nut threaded connection has seted up the expanded groove near countersunk head post one end at the bolt other end, and the expand tube is equipped with the detection part on the countersunk head post, and the detection part includes pressure sensor and sheath, and pressure sensor is piezoresistive film pressure sensor, and pressure sensor is cyclic annular grafting in the countersunk head post, and the sheath cladding is outside pressure sensor to make the terminal surface level and smooth outside the countersunk head post, the utility model has the advantages of automated inspection bolt elasticity.
Description
Technical Field
The utility model relates to a fastener field, specifically speaking relates to an crab-bolt with detect stress state.
Background
The anchor bolt is generally an expansion bolt, and the anchor bolt is fixed by utilizing the wedge-shaped inclination to promote expansion to generate friction gripping force so as to achieve the fixing effect; one end of the bolt is provided with threads, the other end of the bolt is provided with a taper, an expansion pipe is sleeved outside the bolt, a half of the expansion pipe is provided with a plurality of notches and is plugged into a hole drilled in a wall together, then a nut is screwed, the bolt is pulled outwards towards the hole by the nut, the taper is pulled into the expansion pipe, the expansion pipe is expanded and inserted into the wall surface, so that the bolt is tightly fixed on the wall and is generally used for fastening engineering aspects such as guard rails, tracks and the like.
The subway rails are basically fixed by anchor bolts so as to ensure the stable fixation of the rail positions; however, during the running process of the train, great vibration is generated, and at the moment, the anchor bolt is easily loosened due to the influence of the vibration, and if the anchor bolt is not screwed in time, the safe running of the train is influenced; and the nut displacement volume when the crab-bolt pine takes off is little, and people's naked eye is difficult to distinguish, and difficult in time discovery crab-bolt pine takes off.
SUMMERY OF THE UTILITY MODEL
In order to solve the disadvantages of the prior art, an object of the present invention is to provide an anchor bolt with a stress detection function, so as to overcome the defects of the prior art.
In order to realize the above-mentioned purpose, the utility model provides an crab-bolt with detect stress, including expand tube, bolt and nut, the expand tube cup joints outside the bolt, and bolt one end has linked firmly the countersunk head post, and nut threaded connection is at the bolt other end, and the expand tube is close to countersunk head post one end and has seted up the expanding groove, is equipped with the detection part on the countersunk head post, and the detection part includes pressure sensor and sheath, and pressure sensor is film sensor, and pressure sensor is cyclic annular grafting in the countersunk head post, and the sheath cladding is outside pressure sensor to make the outer terminal surface of countersunk head post level and smooth.
By adopting the technical scheme, when the anchor bolt is installed, the countersunk head column is inserted into the expansion pipe to expand the expansion pipe, the expansion pipe is contacted with the sheath to apply pressure to the pressure sensor, and the pressure sensor generates an electric signal and records the pressure of the expansion pipe and the countersunk head column; when the bolt is loosened, the pressure of the expansion pipe on the sheath is reduced, the pressure sensor generates a new electric signal, and when the pressure value represented by the new electric signal is lower than the pressure value measured for the first time, the bolt is loosened without human naked eye identification, so that the detection is very quick and convenient; the sheath is arranged to prevent the pressure sensor from being scratched by external broken slag, so that the service life of the pressure sensor is prolonged.
As to the utility model discloses a further explanation, preferably, pressure sensor one end has linked firmly two joints, connects and stretches into in the countersunk head post, has linked firmly the signal line on the joint, and signal line one end stretches out outside the countersunk head post.
Through adopting above-mentioned technical scheme, set up the signal line and can transmit the signal that pressure sensor produced to equipment terminal, the staff of being convenient for monitors.
As a further explanation of the present invention, preferably, the extending direction of the signal line is the same as the axial direction of the countersunk head post, and the signal line extends from the planar end of the countersunk head post.
By adopting the technical scheme, the interference of the signal wire and the expansion pipe is avoided, and the signal wire is ensured to be complete and stably transmit signals.
As a further explanation of the present invention, it is preferable that the signal line is sleeved with a protection tube on the end surface extending out of the countersunk head post, and the protection tube is welded to the countersunk head post.
Through adopting above-mentioned technical scheme, set up the pillar and protect the signal line, avoid the signal line to be scratched.
As a further explanation of the present invention, it is preferable that the countersunk head pillar is in the shape of a circular truncated cone, and the inclined surface of the countersunk head pillar points to the expansion slot.
By adopting the technical scheme, the countersunk head column in the shape of the circular truncated cone plays a role in guiding, so that the expansion pipe can be gradually expanded, and labor is saved during fastening.
As to the utility model discloses a further explanation, preferably, the expand tube links firmly the boss outward, and the boss external diameter is greater than the expand tube external diameter, and the expansion tank runs through boss and length and is greater than boss length.
Through adopting above-mentioned technical scheme, set up the structural strength that the boss improved the expand tube, make expand tube and hole wall contact more stable, improve the fastening effect.
As a further explanation of the present invention, preferably, two gaskets are sleeved outside the bolt between the expansion pipe and the nut.
Through adopting above-mentioned technical scheme, the protection expand tube surface does not receive the nut scotch, can also increase the area of contact between track and the nut, improves joint strength.
The utility model discloses following beneficial effect has:
1. the utility model detects the pressure of the expanding tube to the countersunk head column by arranging the pressure sensor, thereby achieving the purpose of detecting whether the bolt is loosened;
2. the sheath is arranged to protect the pressure sensor, so that the service life of the pressure sensor is prolonged;
3. the signal that can produce pressure sensor through setting up the signal line transmits equipment terminal, the staff of being convenient for monitors.
Drawings
FIG. 1 is a diagram illustrating the assembly effect of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is an enlarged view of a in fig. 2.
Description of reference numerals:
1. expanding the tube; 11. expanding the groove; 12. a boss; 2. a bolt; 21. a countersunk head post; 3. a nut; 4. a detection section; 41. a pressure sensor; 42. a sheath; 43. a joint; 44. a signal line; 5. protecting the pipe; 6. and (7) a gasket.
Detailed Description
In order to further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention.
An anchor bolt capable of detecting a stress state is combined with a drawing 1 and a drawing 3 and comprises an expansion pipe 1, a bolt 2 and a nut 3, wherein the expansion pipe 1 is a cylindrical pipe, the expansion pipe 1 is sleeved outside the bolt 2, one end of the bolt 2 is fixedly connected with a countersunk head column 21, the nut 3 is in threaded connection with the other end of the bolt 2, one end of the expansion pipe 1, which is close to the countersunk head column 21, is provided with an expansion groove 11, the countersunk head column 21 is in a circular truncated cone shape, the inclined surface of the countersunk head column 21 points to the expansion groove 11, the countersunk head column 21 which is in the circular truncated cone shape is arranged to play a role in guiding, so that the expansion pipe 1 can; the countersunk head column 21 is provided with a detection part 4, the detection part 4 comprises a pressure sensor 41 and a protective sleeve 42, the pressure sensor 41 is a film pressure sensor, the pressure sensor 41 is annularly inserted into the countersunk head column 21, and the protective sleeve 42 is coated outside the pressure sensor 41, so that the outer end surface of the countersunk head column 21 is flat.
Referring to fig. 1 and 3, when the anchor bolt is installed, the countersunk head column 21 is inserted into the expansion pipe 1 to expand the expansion pipe 1, the expansion pipe 1 is in contact with the sheath 42 to apply pressure to the pressure sensor 41, the pressure sensor 41 generates an electric signal at the moment, and the pressure of the expansion pipe 1 and the countersunk head column 21 at the moment is recorded; when the bolt is loosened, the pressure of the expansion pipe 1 on the sheath 42 is reduced, the pressure sensor 41 generates a new electric signal, and when the pressure value represented by the new electric signal is lower than the pressure value measured for the first time, the bolt is loosened without human visual identification, so that the detection is very quick and convenient; the sheath 42 is arranged to prevent the pressure sensor 41 from being scratched by external slag, so that the service life of the pressure sensor 41 is prolonged.
With reference to fig. 2 and 3, one end of the pressure sensor 41 is fixedly connected with two connectors 43, the connectors 43 extend into the countersunk head post 21, the connectors 43 are fixedly connected with signal lines 44, and one end of the signal lines 44 extends out of the countersunk head post 21; the extending direction of the signal wire 44 is the same as the axial direction of the countersunk head column 21, and the signal wire 44 extends out of the plane end of the countersunk head column 21, so that the interference between the signal wire 44 and the expansion pipe 1 is avoided, and the signal wire 44 is ensured to transmit signals completely and stably; the end surface of the signal wire 44 extending out of the countersunk head column 21 is sleeved with a protective pipe 5, and the protective pipe 5 is welded on the countersunk head column 21.
With reference to fig. 2 and 3, the signal line 44 is arranged to transmit the signal generated by the pressure sensor 41 to the device terminal, so that the monitoring by the staff is facilitated, and the protective tube 5 is arranged to protect the signal line 44 and prevent the signal line 44 from being scratched.
With reference to fig. 1 and 2, a boss 12 is fixedly connected to the outside of the expansion pipe 1, the outer diameter of the boss 12 is larger than that of the expansion pipe 1, an expansion groove 11 penetrates through the boss 12 and is longer than the boss 12, and the boss 12 is arranged to improve the structural strength of the expansion pipe 1, so that the expansion pipe 1 is more stably contacted with the wall of the hole, and the fastening effect is improved; two gaskets 6 are sleeved outside the bolt 2 between the expansion pipe 1 and the nut 3, the outer diameter of each gasket 6 is larger than the outer diameter of the expansion pipe 1, the inner diameter of each gasket 6 is larger than the outer diameter of the bolt 2 and smaller than the inner diameter of the expansion pipe 1, the surface of the expansion pipe 1 is protected from being scratched by the nut 3, the contact area between a track and the nut 3 can be increased, and the connection strength is improved.
It should be noted that the above mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be interpreted as limiting the scope of the present invention. Various modifications, equivalent substitutions and improvements will occur to those skilled in the art and are intended to be within the spirit and scope of the present invention. The protection scope of the present invention is subject to the appended claims.
Claims (7)
1. An anchor bolt with a function of detecting a stress state comprises an expansion pipe (1), a bolt (2) and a nut (3), wherein the expansion pipe (1) is sleeved outside the bolt (2), one end of the bolt (2) is fixedly connected with a countersunk head column (21), the nut (3) is in threaded connection with the other end of the bolt (2), one end of the expansion pipe (1) close to the countersunk head column (21) is provided with an expansion groove (11), and the anchor bolt is characterized in that,
be equipped with on countersunk head post (21) and detect component (4), detect component (4) are including pressure sensor (41) and sheath (42), and pressure sensor (41) are film sensor, and pressure sensor (41) are cyclic annular grafting in countersunk head post (21), and sheath (42) cladding is outside pressure sensor (41) to make countersunk head post (21) outer terminal surface level and smooth.
2. The anchor bolt with the function of detecting the stress state as claimed in claim 1, wherein the pressure sensor (41) is fixedly connected with two connectors (43) at one end, the connectors (43) extend into the countersunk head post (21), the connectors (43) are fixedly connected with signal wires (44), and one ends of the signal wires (44) extend out of the countersunk head post (21).
3. Anchor bolt with the function of detecting stress according to claim 2, characterised in that the signal line (44) extends in the same direction as the axis of the countersink (21), the signal line (44) being led out from the threaded end through the side of the sleeve.
4. The anchor bolt with the function of detecting stress conditions as claimed in claim 3, characterized in that the signal wire (44) extends through the side of the sleeve and out of the threaded end, and the signal generator and the alarm are connected to the outlet end.
5. Anchor bolt with the function of detecting stress according to claim 1, characterised in that the countersink (21) is circular truncated cone-shaped, the slope of the countersink (21) pointing towards the expansion groove (11).
6. The anchor bolt capable of detecting the stress state according to claim 5, wherein the expansion pipe (1) is externally connected with a boss (12), the outer diameter of the boss (12) is larger than that of the expansion pipe (1), and the expansion groove (11) penetrates through the boss (12) and has a length larger than that of the boss (12).
7. Anchor bolt with the function of detecting stress according to claim 1, characterised in that two washers (6) are applied around the bolt (2) between the expansion tube (1) and the nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852117.0U CN211820276U (en) | 2019-06-06 | 2019-06-06 | Anchor bolt with function of detecting stress state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852117.0U CN211820276U (en) | 2019-06-06 | 2019-06-06 | Anchor bolt with function of detecting stress state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820276U true CN211820276U (en) | 2020-10-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920852117.0U Active CN211820276U (en) | 2019-06-06 | 2019-06-06 | Anchor bolt with function of detecting stress state |
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| Country | Link |
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| CN (1) | CN211820276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230629A (en) * | 2019-06-06 | 2019-09-13 | 法施达科技有限公司 | A kind of anchor bolt with detection stress |
| DE102022103653A1 (en) | 2022-02-16 | 2023-08-17 | Adolf Würth GmbH & Co. KG | Measuring element with fastening end and fastening thread for fastening to anchorage base to be characterized by sensors |
| DE102022103650A1 (en) | 2022-02-16 | 2023-08-17 | Adolf Würth GmbH & Co. KG | Fastening element with sensor arranged in narrowing section and protected by protective device |
-
2019
- 2019-06-06 CN CN201920852117.0U patent/CN211820276U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230629A (en) * | 2019-06-06 | 2019-09-13 | 法施达科技有限公司 | A kind of anchor bolt with detection stress |
| DE102022103653A1 (en) | 2022-02-16 | 2023-08-17 | Adolf Würth GmbH & Co. KG | Measuring element with fastening end and fastening thread for fastening to anchorage base to be characterized by sensors |
| DE102022103650A1 (en) | 2022-02-16 | 2023-08-17 | Adolf Würth GmbH & Co. KG | Fastening element with sensor arranged in narrowing section and protected by protective device |
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Address after: 300399 Zone E, Intersection of Changxing Road and Fude Road, Baodi Plastic Products Industrial Zone, Baodi District, Tianjin Patentee after: Fashida (Tianjin) Intelligent Technology Co.,Ltd. Address before: No. 1, Approach Channel, Jinqiao Industrial Park, Dongli District, Tianjin, 300399 Patentee before: FASTEN (DALIAN) ENGINEERING MATERIALS Co.,Ltd. |