CN218332824U - Bolt looseness monitoring and alarming device - Google Patents
Bolt looseness monitoring and alarming device Download PDFInfo
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- CN218332824U CN218332824U CN202221840224.XU CN202221840224U CN218332824U CN 218332824 U CN218332824 U CN 218332824U CN 202221840224 U CN202221840224 U CN 202221840224U CN 218332824 U CN218332824 U CN 218332824U
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- fixed contact
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Abstract
The utility model belongs to the technical field of bolt loosening monitoring, and discloses a bolt loosening monitoring and alarming device, which comprises a protective shell and a sealing cover, wherein the protective shell comprises a side plate and a bottom fixing plate, and the side plate comprises a first side plate, a second side plate and a third side plate; the sealing cover comprises a top cover and a fourth side plate, and the protective shell and the sealing cover are connected through screws to form a closed protective box body; a through hole is formed in the fixing plate in a penetrating mode, and a nut and a bolt head on the bolt penetrate through the through hole and are located inside the protective shell. The utility model is used for whether not hard up monitoring of bolt, when the bolt takes place that the trace is not hard up, in time send out the police dispatch newspaper.
Description
Technical Field
The utility model belongs to the technical field of the not hard up monitoring of bolt, a alarm device is related to, concretely relates to not hard up monitoring alarm device of bolt.
Background
The bolt connection is an important engineering structure connection mode, has the advantages of strong bearing capacity, convenience in disassembly and the like, and is widely applied to the fields of civil engineering, machinery, aerospace, automobiles and the like. The bolt is easy to loosen under the frequent action of external torsion, bending force and shearing force, namely, the nut is subjected to rotation angle displacement relative to the bolt, and facilities and equipment with higher requirements on the fastening torque of the bolt cannot estimate the brought consequences once the bolt loosens, so that greater safety risks or accidents are caused. At present, the bolt loosening detection method mainly comprises an ultrasonic method and a camera shooting method, but the ultrasonic method needs ultrasonic coupling between a probe and a detected object and is complex to install; the camera shooting method is influenced by the camera shooting visual angle, the measurement precision is low, and the alarm can be given only under the condition that the rotation angle of the nut is increased. Therefore, a simple and reliable bolt looseness monitoring and alarming device is urgently needed to monitor whether the bolt is loosened or not.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bolt looseness monitoring alarm device, the nut is not hard up takes place to drive the transfer line rotation on the magnetic suction seat when rotatory, makes movable contact and fixed contact touching, instructs illuminator to report to the police, and bolted connection's reliability is ensured to the fastening condition that can the real-time supervision bolt.
The utility model discloses a realize above-mentioned purpose, the technical scheme who adopts as follows:
a bolt looseness monitoring alarm device comprises a protective shell and a sealing cover, wherein the protective shell comprises side plates and a fixing plate at the bottom, and the side plates comprise a first side plate, a second side plate and a third side plate; the sealing cover comprises a top cover and a fourth side plate, and the protective shell and the sealing cover are connected through screws to form a closed protective box body;
a through hole is formed in the fixing plate in a penetrating manner, and a nut and a bolt head on the bolt penetrate through the through hole and are positioned in the protective shell;
a magnetic attraction seat is adsorbed on the outer side wall of the nut, which is opposite to the first side plate of the protection shell, and a transmission rod is fixedly arranged on the magnetic attraction seat;
the protection shell is internally provided with an alarm circuit, the alarm circuit comprises a power supply, a moving contact, a fixed contact and an indicating light-emitting device, the moving contact is inserted in the side wall of the transmission rod, the side wall is far away from one end of the nut, the fixed contact is arranged on the first side plate, the indicating light-emitting device is controlled to work by the contact of the moving contact and the fixed contact, and a first mounting hole for mounting the indicating light-emitting device is formed in the side plate of the protection shell;
the positive pole of the power supply is connected with the moving contact, the negative pole of the power supply is connected with one end of the indicating and light-emitting device, and the other end of the indicating and light-emitting device is connected with the fixed contact.
As a limitation, the alarm circuit further comprises a signal output socket connected with the remote monitoring system through an external circuit, and a second mounting hole for mounting the signal output socket is formed in a side plate of the protection shell;
one end of the signal output socket is connected with the negative pole of the power supply, and the other end of the signal output socket is connected with the fixed contact.
As a second definition, the indicator light is a light emitting diode.
As a third limitation, a battery slot box is arranged on the fixing plate, and the power supply is arranged in the battery slot box.
As a fourth limitation, an adjusting hole for adjusting the moving contact is formed on the fourth side plate.
As a fifth limitation, a fixing block is arranged between the first side plate and the fixed contact, the fixing block is fixedly arranged on the first side plate, and the fixed contact is fixedly arranged on the fixing block.
The utility model discloses owing to adopted foretell technical scheme, it compares with prior art, and the technical progress who gains lies in:
(1) The utility model adsorbs the magnetic suction seat on the side surface of the monitored nut, and can drive the transmission rod on the magnetic suction seat to rotate when the nut is loosened and rotates, so as to touch the movable contact and the fixed contact, switch on the alarm circuit and indicate the light-emitting device to give an alarm;
(2) One end of the transmission rod of the utility model is connected with the magnetic suction seat, and the other end is threaded and inserted with a moving contact, so that the linear displacement of the nut during rotation can be enlarged by 2-3 times through the transmission rod, and the measurement precision is improved;
(3) The moving contact screw thread of the utility model is inserted on the transmission rod, the moving contact can be rotated to adjust the clearance between the moving contact and the fixed contact as required, the monitoring precision is adjusted, and when the bolt is slightly loosened, an alarm can be given;
(4) The utility model uses the light emitting diode as the alarm lamp, and after the nut loosening alarm circuit is switched on, the light emitting diode emits twinkling light, which can be directly observed by the working personnel;
(5) The alarm circuit of the utility model is in an open circuit state when normal, does not consume electric energy, and has long service life;
(6) The utility model relates to a rationally, simple structure, processing preparation is convenient, and application range is wide, but wide application in the equipment that adopts bolted connection.
The utility model belongs to the technical field of the not hard up monitoring of bolt for whether not hard up monitoring of bolt, when the bolt takes place that the trace is not hard up, in time send out the police dispatch newspaper.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a protective casing according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a magnetic attraction seat, a transmission rod and a moving contact according to an embodiment of the present invention;
fig. 4 is a circuit diagram of an alarm circuit according to an embodiment of the present invention.
In the figure: 1. a protective housing; 2. a sealing cover; 3. a fixing plate; 4. a first side plate; 5. a fourth side plate; 6. a through hole; 7. a nut; 8. a bolt; 9. a magnetic attraction seat; 10. a transmission rod; 11. a moving contact; 12. fixing a contact; 13. a light emitting diode; 14. a signal output jack; 15. a battery cell box; 16. an adjustment hole; 17. a fixed block; 18. a screw; 19. a power source.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Embodiment bolt looseness monitoring alarm device
As shown in fig. 1, the present embodiment includes a protective case 1, a sealing cover 2; the protective shell 1 comprises side plates and a bottom fixing plate 3, wherein the side plates comprise a first side plate 4, a second side plate and a third side plate; the sealing cover 2 comprises a top cover and a fourth side plate 5, and the protective shell 1 and the sealing cover 2 are connected through a screw 18 to form a closed protective box body.
As shown in fig. 2 and 3, a through hole 6 is formed in the fixing plate 3 of the protection casing 1, and the nut 7 on the bolt 8 and the head of the bolt 8 pass through the through hole 6 and are located inside the protection casing 1; a magnetic attraction seat 9 is adsorbed on the outer side wall of the nut 7 opposite to the first side plate 4 of the protection shell 1, and a transmission rod 10 is fixedly arranged on the magnetic attraction seat 9. The magnetic suction seat 9 has magnetism, can be firmly adsorbed on the outer side wall of the monitored nut 7, and can drive the magnetic suction seat 9 to rotate when the nut 7 is loosened and rotates.
An alarm circuit is arranged in the protective shell 1, the alarm circuit comprises a power supply 19, a moving contact 11 which is inserted in the side wall of the transmission rod 10 far away from one end of the nut 7 in a penetrating manner in a threaded manner, a fixed contact 12 arranged on the first side plate 4, an indicating light-emitting device controlled to work by the contact of the moving contact 11 and the fixed contact 12 and a signal output socket 14, and the signal output socket 14 is connected with a far-end monitoring system through an external circuit; the indicating light emitting device in this embodiment is a light emitting diode 13. The first side plate 4 of the protective casing 1 is provided with a first mounting hole for mounting an indication light-emitting device and a second mounting hole for mounting a signal output socket 14. In this embodiment, the signal output jack 14 is connected with an external circuit, so that a signal can be transmitted to a remote monitoring system, and remote monitoring is realized.
As shown in fig. 4, in the alarm circuit, the positive pole of the power supply 19 is connected with the movable contact 11, the negative pole of the power supply 19 is connected with one end of the indicating light-emitting device, and the other end of the indicating light-emitting device is connected with the fixed contact 12; one end of the signal output socket 14 is connected with the negative pole of the power supply 19, and the other end is connected with the fixed contact 12.
In this embodiment, the fixing plate 3 is further provided with a battery slot case 15, and the power supply 19 is installed in the battery slot case 15. The fourth side plate 5 is provided with an adjusting hole 16 for adjusting the movable contact 11, the adjusting hole 16 is matched with the position of the movable contact 11, the extension length of the movable contact 11 on the transmission rod 10 can be adjusted through the adjusting hole 16, and a gap between the movable contact 11 and the fixed contact 12 is set. A fixed block 17 is further arranged between the first side plate 4 and the fixed contact 12, the fixed block 17 is fixedly arranged on the first side plate 4, and the fixed contact 12 is fixedly arranged on the fixed block 17.
The using process of the embodiment is as follows: the method comprises the steps that a nut 7 on a fastened bolt 8 and the head of the bolt 8 penetrate through a through hole 6 in a fixing plate 3 of a protection shell 1, the direction of the protection shell 1 is adjusted, one outer side wall of the nut 7 is opposite (parallel) to a first side plate 4 of the protection shell 1, then a magnetic suction seat 9 is adsorbed on the outer side wall of the nut 7, a fixed contact 12 is arranged on one side, which is not loosened and rotated, of the nut 7 on the first side plate 4, the extending length of a moving contact 11 on a transmission rod 10 is adjusted, and according to actual conditions, a gap between the moving contact 11 and the fixed contact 12 is set. After setting, the protective housing 1 and the sealing cover 2 are closed by the screw 18.
When the bolt 8 is loosened, the nut 7 rotates to drive the transmission rod 10 on the magnetic suction seat 9 to rotate, the movable contact 11 is in contact with the fixed contact 12, the alarm circuit is switched on, the light-emitting diode 13 gives an alarm, and the light-emitting diode emits flickering light, so that a worker can directly observe the contact.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or some technical features can be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A bolt looseness monitoring alarm device comprises a protective shell and a sealing cover, and is characterized in that the protective shell comprises side plates and a fixing plate at the bottom, and the side plates comprise a first side plate, a second side plate and a third side plate; the sealing cover comprises a top cover and a fourth side plate, and the protective shell and the sealing cover are connected through screws to form a closed protective box body;
a through hole is formed in the fixing plate in a penetrating mode, and a nut and a bolt head on the bolt penetrate through the through hole and are located inside the protective shell;
a magnetic attraction seat is adsorbed on the outer side wall of the nut, which is opposite to the first side plate of the protection shell, and a transmission rod is fixedly arranged on the magnetic attraction seat;
the protection shell is internally provided with an alarm circuit, the alarm circuit comprises a power supply, a moving contact, a fixed contact and an indicating and light-emitting device, the moving contact is inserted in the side wall of one end, far away from the nut, of the transmission rod in a threaded manner, the fixed contact is arranged on the first side plate, the indicating and light-emitting device works under the control of the contact between the moving contact and the fixed contact, and a first mounting hole for mounting the indicating and light-emitting device is formed in the side plate of the protection shell;
the positive pole of the power supply is connected with the moving contact, the negative pole of the power supply is connected with one end of the indicating and light-emitting device, and the other end of the indicating and light-emitting device is connected with the fixed contact.
2. The bolt looseness monitoring and alarming device according to claim 1, wherein the alarming circuit further comprises a signal output socket connected with a remote monitoring system through an external circuit, and a second mounting hole for mounting the signal output socket is formed in a side plate of the protection shell;
one end of the signal output socket is connected with the negative pole of the power supply, and the other end of the signal output socket is connected with the fixed contact.
3. The bolt looseness monitoring and warning device according to claim 2, wherein said indication light emitting device is a light emitting diode.
4. The bolt looseness monitoring and alarming device according to claim 1, wherein a battery groove box is arranged on the fixing plate, and a power supply is installed in the battery groove box.
5. The bolt looseness monitoring and alarming device according to claim 1, wherein an adjusting hole for adjusting the movable contact is formed in the fourth side plate.
6. The bolt looseness monitoring and alarming device according to claim 1, wherein a fixed block is arranged between the first side plate and the fixed contact, the fixed block is fixedly arranged on the first side plate, and the fixed contact is fixedly arranged on the fixed block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221840224.XU CN218332824U (en) | 2022-07-18 | 2022-07-18 | Bolt looseness monitoring and alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221840224.XU CN218332824U (en) | 2022-07-18 | 2022-07-18 | Bolt looseness monitoring and alarming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218332824U true CN218332824U (en) | 2023-01-17 |
Family
ID=84869604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221840224.XU Active CN218332824U (en) | 2022-07-18 | 2022-07-18 | Bolt looseness monitoring and alarming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218332824U (en) |
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2022
- 2022-07-18 CN CN202221840224.XU patent/CN218332824U/en active Active
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