Externally-mounted angle-adjustable bolt looseness early warning device

Abstract

The invention discloses an externally-mounted angle-adjustable bolt looseness early warning device, and relates to the technical field of thread looseness prevention, the externally-mounted angle-adjustable bolt looseness early warning device comprises a plate, the surface of the plate is in threaded connection with a bolt, the top of the bolt is provided with an anti-looseness mechanism, the anti-looseness mechanism comprises a protection part, and the protection part is in contact with the surface of the bolt. A contact component is arranged on the surface of the protection component, an alarm component is installed on the surface of the contact component, a housing mechanism is installed on the surface of the anti-loosening mechanism, and an inner shell plate mechanism is arranged in the housing mechanism. The device is installed on a nut, when a bolt is loosened, a guide block slides in an arc-shaped groove plate, a circuit in the device detects that resistance is increased to a certain value, an alarm starts to give an alarm, a pyramid and a ridge groove are in sliding connection, connection is simple, disassembly and assembly are easy, a sliding plate in sliding connection with the interior of an outer cover shell can be opened when an anti-loosening mechanism is adjusted, and the anti-loosening mechanism is convenient to adjust. And the positioning groove and the convex block can prevent the sliding plate from deviating during sliding.

Description

Technical Field

[0001] The invention relates to the technical field of thread anti-loosening, and in particular to an externally mounted angle-adjustable bolt loosening warning device. Background Art

[0002] There are various methods for detecting bolt loosening. Traditional physical methods (such as torque detection, torsion angle measurement, tapping judgment and visual feel inspection) are mainly based on basic physical quantities or intuitive feelings. Vibration-based methods capture changes in structural vibration characteristics by analyzing spectral characteristics and impact response. Detection based on deformation or displacement uses strain gauges to monitor strain or lasers to measure tiny displacements. Acoustic emission technology can capture high-frequency sound wave signals generated by loosening. Visual detection combines high-definition images with AI algorithms to identify characteristics such as thread deformation. The Internet of Things and smart sensor principles integrate micro sensors on bolts and transmit data to the cloud for real-time analysis to achieve intelligent monitoring.

[0003] For example, the bolt loosening detection gasket disclosed in Chinese patent publication number CN214750758U only requires a simple modification of the original gasket, which is low-cost and simple to implement.

[0004] For example, a bolt loosening detection device and method disclosed in Chinese Patent Publication No. CN119086038A provides a rotating cover and a conductive spring on the bolt stud / nut, and a conductive fixing ring on the fastener, so that the conductive spring and the conductive fixing ring can form a closed detection circuit when the bolt is tightened.

[0005] The existing technology has the following defects:

[0006] 1. For bolt loosening detection gaskets, they need to be installed before the bolts are tightened. They cannot be adapted to already installed bolts. In addition, the requirements for bolt gaskets are not uniform for bolts of different specifications, and they need to be constantly adjusted during production and use.

[0007] 2. Regarding a bolt loosening detection device and method, the device has the disadvantage of being a split-type device (one part is mounted on the nut, the other part is mounted on the fastener, and the two parts are connected by a conductive spring), which requires precise alignment during installation, making installation inconvenient;

[0008] Therefore, the present invention proposes an externally mounted, angle-adjustable bolt loosening warning device, which is configured as an integrated device that can be installed from the outside, and then achieves a warning setting for different bolt loosening angles by changing the arc length of the conductor connection part. Summary of the Invention

[0009] The present invention aims to provide an externally mounted, angle-adjustable bolt loosening warning device to solve the problems raised in the above-mentioned background technology.

[0010] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0011] A bolt loosening warning device with an externally mounted adjustable angle comprises a plate, a bolt being threadedly connected to the surface of the plate, an anti-loosening mechanism being installed on the top of the bolt, a cover mechanism being installed on the surface of the anti-loosening mechanism, an inner shell plate mechanism being arranged inside the cover mechanism, the anti-loosening mechanism comprising a protective component, the protective component being in contact with the surface of the bolt, a contact component being arranged on the surface of the protective component, an alarm component being installed on the surface of the contact component, the alarm component comprising a connecting component, the connecting component being connected to the outer surface of the protective component, a circuit component being arranged inside the connecting component, and the cover mechanism and the inner shell plate mechanism cooperating to form effective protection.

[0012] A further improvement of the technical solution of the present invention is that: the protective component includes a prismatic block, the outer surface of the prismatic block is fixedly connected to a bearing, the inner wall of the bearing is rotatably connected to a connecting shaft, the surface of the prismatic block is provided with a ridge groove, the surface of the prismatic block is provided with a battery compartment, the side of the prismatic block close to the plate is fixedly connected to a boss, the outer surface of the boss is fixedly connected to a convex strip, the outer surface of the boss is movably connected to the outer surface of the bolt, and the prismatic block and the boss constitute the main body of the anti-loosening mechanism.

[0013] A further improvement of the technical solution of the present invention is that: the contact component includes an arc-shaped slot plate, one end of the arc-shaped slot plate is fixedly connected to a baffle, the inner wall of the arc-shaped slot plate is provided with a conical slot, the inner wall of the arc-shaped slot plate is provided with a rectangular rail, the inner wall of the conical slot is slidably connected with a conical key, the outer surface of the conical key is fixedly connected with a guide block, the inner wall of the rectangular rail is slidably connected with a rectangular key, the outer surface of the rectangular key is fixed to the outer surface of the guide block, the outer surface of the guide block slides with the inner wall of the arc-shaped slot plate, the end of the guide block away from the arc-shaped slot plate is fixed to the outer surface of the ridge, and installing a conical key and a rectangular key on the guide block can make the guide block more sensitive.

[0014] A further improvement of the technical solution of the present invention is that: the connecting assembly includes a connecting rod, one end of the connecting rod is fixedly connected to the bearing, the end of the connecting rod away from the bearing is fixedly connected to the outer ring, the surface of the outer ring is provided with a guide groove, the inner side of the outer ring is fixedly connected to a fixing cylinder, the inner side of the fixing cylinder is fixedly connected to the outer surface of the arc-shaped groove plate, the outer ring is fixed on the plate, and the connecting rod is used to connect the outer ring and the prismatic block.

[0015] A further improvement of the technical solution of the present invention is that: the circuit component includes an outer ring wiring, one end of the outer ring wiring is fixedly connected to the inner wall of the arc groove plate, the end of the outer ring wiring away from the arc groove plate is fixedly connected to the outer surface of the bearing, the end of the bearing close to the boss is fixedly connected to a conductive plate, the side of the conductive plate close to the boss is fixedly connected to the bearing wiring, the end of the bearing wiring away from the bearing is fixedly connected to a power supply, the outer surface of the power supply is fixedly connected to a connecting wire, the end of the connecting wire away from the power supply is fixedly connected to an alarm, the outer surface of the alarm is fixedly connected to a tube wiring, the end of the tube wiring away from the alarm is fixed to the outer surface of the guide block, and the alarm relies on the resistance value in the circuit to determine whether to alarm.

[0016] A further improvement of the technical solution of the present invention is that: the outer surface of one end of the outer ring wiring is fixedly connected to the inner wall of the connecting rod, the outer surface of one end of the outer ring wiring away from the connecting rod is fixedly connected to the inner wall of the fixed cylinder, the outer surfaces of the alarm, connecting wires and power supply are all fixedly connected to the inner wall of the battery compartment, the outer surface of the cylinder wiring is fixedly connected to the inner wall of the ridge ring, and the embedded installation of the circuit component can effectively extend the service life.

[0017] A further improvement of the technical solution of the present invention is that: the cover shell mechanism includes an outer cover shell, the inner wall of the outer cover shell is fixedly connected with a positioning column, the end of the positioning column away from the outer cover shell is movably connected to the outer surface of the connecting shaft, the inner wall of the outer cover shell is fixedly connected with a pyramid, the outer surface of the pyramid is slidingly connected to the inner wall of the prism groove, the inner wall of the outer cover shell is rotatably connected to the outer surface of the outer ring, the inner wall of the outer cover shell is fixedly connected with a key ring, the side of the key ring is fixedly connected with a positioning block, the key ring ensures the movement trajectory, and the positioning block prevents falling off during use.

[0018] A further improvement of the technical solution of the present invention is that: the inner shell plate mechanism includes a sliding plate, a connecting groove is provided on the outer surface of the sliding plate, a positioning groove is provided on the inner wall of the connecting groove, a protrusion is fixedly connected to the end of the sliding plate close to the outer ring, and a shift plate is fixedly connected to the outer surface of the sliding plate, which can make the operation of the sliding plate more time-saving and labor-saving.

[0019] A further improvement of the technical solution of the present invention is that the outer surface of the protrusion slides with the inner wall of the guide groove, the inner wall of the connecting groove is slidably connected to the outer surface of the key ring, and the inner wall of the positioning groove is slidably connected to the outer surface of the positioning block.

[0020] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0021] 1. The present invention provides an externally mounted, angle-adjustable bolt loosening warning device. When the bolt is loose, it rotates to cause the guide block to slide in the arc-shaped slot plate, resulting in an increase in resistance in the circuit. When the resistance in the circuit increases to a certain value, the detection device inside the alarm sends a signal, and the alarm starts to alarm. The circuit resistance can be adjusted by the distance the guide block moves in the arc-shaped slot plate, and can be adjusted according to actual conditions during use.

[0022] 2. The present invention provides an externally mounted, angle-adjustable bolt loosening warning device, in which the outer ring wiring is fixed inside the connecting rod and the fixed cylinder, the arc-shaped slot plate and the guide block are both conductors, one end of the outer ring wiring is fixed at the end of the arc-shaped slot plate, and the two cooperate to act as a sliding rheostat. When the guide block starts to move, the resistance increases, and the other end of the guide block is fixed to the cylinder wiring, which is fixed inside the ridge ring, and the other end is fixed to the alarm. The power supply is connected to the bearing through the bearing wiring, and a layer of conductive material is fixed on the outside of the bearing to ensure the connection between the outer ring wiring and the bearing wiring.

[0023] 3. The present invention provides an externally mounted, angle-adjustable bolt loosening warning device, in which the pyramid is embedded in the prism groove, and the positioning column is fixed to the bearing. When the bolt rotates, the outer cover shell rotates at the same time, which will not affect the operation of the alarm. The sliding plate is installed inside the outer cover shell, and the cooperation between the positioning block and the positioning groove makes the installation of the sliding plate and the outer cover shell more tight. The protrusion at the bottom of the sliding block can prevent the sliding plate from offsetting during movement, and the dial plate can make the operation of the sliding plate more convenient. Since the guide block and the arc-shaped groove plate are exposed conductors, wind, sand, rain, snow and other environments will greatly affect the operation of the circuit, and the closing of the sliding plate and the cooperation with the outer cover shell can effectively reduce the impact of the environment on the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematic diagram of the three-dimensional structure of the appearance of the present invention;

[0026] Figure 2 Schematic diagram of the three-dimensional structure of the anti-loosening mechanism of the present invention;

[0027] Figure 3 Schematic diagram of the cooperation structure of the cover mechanism and the anti-loosening mechanism of the present invention;

[0028] Figure 4 Schematic diagram of the three-dimensional structure of the protective component of the present invention;

[0029] Figure 5It is a partial enlarged structural schematic diagram of the contact component of the present invention;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the alarm component of the present invention;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the connection assembly of the present invention;

[0032] Figure 8 A partially enlarged schematic diagram of a circuit assembly of the present invention;

[0033] Figure 9 Schematic diagram of the three-dimensional structure of the cover mechanism of the present invention;

[0034] Figure 10 Schematic diagram of the assembly structure of the cover plate mechanism and the inner shell plate mechanism of the present invention;

[0035] Figure 11 Schematic diagram of the three-dimensional structure of the inner shell plate mechanism of the present invention;

[0036] Figure 12 It is a partially enlarged schematic diagram of the connecting groove of the present invention.

[0037] In the figure: 1, plate; 2, bolt; 3, anti-loosening mechanism; 31, protective component; 311, prismatic block; 312, bearing; 313, connecting shaft; 314, ribbed groove; 315, boss; 316, battery compartment; 317, ribbed ring; 318, ribbed strip; 32, contact component; 321, arc groove plate; 322, baffle; 323, guide block; 324, tapered groove; 325, rectangular rail; 326, rectangular key; 327, tapered key; 33, alarm component; 331, connecting component; 3311, connecting Rod; 3312, outer ring; 3313, guide groove; 3314, fixed cylinder; 332, circuit assembly; 3321, outer ring wiring; 3322, cylinder wiring; 3323, alarm; 3324, connecting wire; 3325, bearing wiring; 3326, power supply; 4, cover mechanism; 41, outer cover; 42, positioning column; 43, pyramid; 44, key ring; 45, positioning block; 5, inner shell mechanism; 51, sliding plate; 52, connecting groove; 53, positioning groove; 54, protrusion; 55, dial plate. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Example 1, as Figures 1 to 12 As shown, the present invention provides an externally mounted angle-adjustable bolt loosening warning device, comprising a plate 1, a bolt 2 being threadedly connected to the surface of the plate 1, an anti-loosening mechanism 3 being installed on the top of the bolt 2, the anti-loosening mechanism 3 comprising a protective component 31, the protective component 31 being in contact with the surface of the bolt 2, a contact component 32 being provided on the surface of the protective component 31, an alarm component 33 being installed on the surface of the contact component 32, the alarm component 33 comprising a connecting component 331, the connecting component 331 being connected to the outer surface of the protective component 31, a circuit component 332 being provided inside the connecting component 331, a cover mechanism 4 being installed on the surface of the anti-loosening mechanism 3, an inner shell plate mechanism 5 being provided inside the cover mechanism 4, the bolt 2 being connected to the plate 1, the anti-loosening mechanism 3 being installed at the nut of the bolt 2, the cover mechanism 4 and the inner shell plate mechanism 5 being installed in cooperation with each other on the outside of the anti-loosening mechanism 3, and the cover mechanism 4 and the inner shell plate mechanism 5 being cooperated to form effective protection.

[0040] Example 2, as Figures 1 to 12As shown, based on Example 1, the present invention provides a technical solution: preferably, the protective component 31 includes a prismatic block 311, the outer surface of the prismatic block 311 is fixedly connected to a bearing 312, the inner wall of the bearing 312 is rotatably connected to a connecting shaft 313, the surface of the prismatic block 311 is provided with a prism groove 314, the surface of the prismatic block 311 is provided with a battery compartment 316, the side of the prismatic block 311 close to the plate 1 is fixedly connected to a boss 315, the outer surface of the boss 315 is fixedly connected to a ridge 318, the ridge 318 serves as a scale, which is easier to identify during adjustment, the outer surface of the boss 315 is movably connected to the outer surface of the bolt 2, the contact component 32 includes an arcuate slot plate 321, one end of the arcuate slot plate 321 is fixedly connected to a baffle 322, The inner wall of the arc groove plate 321 is provided with a tapered groove 324, and the inner wall of the arc groove plate 321 is provided with a rectangular rail 325. The inner wall of the tapered groove 324 is slidably connected with a tapered key 327, and the outer surface of the tapered key 327 is fixedly connected with a guide block 323. The opening of the tapered groove 324 and the rectangular rail 325 can make the guide block 323 more sensitive when sliding in the arc groove plate 321. The inner wall of the rectangular rail 325 is slidably connected with a rectangular key 326. The outer surface of the rectangular key 326 is fixed to the outer surface of the guide block 323. The outer surface of the guide block 323 slides with the inner wall of the arc groove plate 321. The end of the guide block 323 away from the arc groove plate 321 is fixed to the outer surface of the ridge 317. The guide block 323 cooperates with the arc groove plate 321 to have the function of a sliding rheostat. When the bolt 2 is loosened When the guide block 323 slides inside the arc-shaped slot plate 321, the resistance increases, and the connecting component 331 includes a connecting rod 3311, one end of the connecting rod 3311 is fixedly connected to the bearing 312, and the end of the connecting rod 3311 away from the bearing 312 is fixedly connected to the outer ring 3312, and a guide groove 3313 is provided on the surface of the outer ring 3312. The inner side of the outer ring 3312 is fixedly connected to the fixed cylinder 3314, and the inner side of the fixed cylinder 3314 is fixedly connected to the outer surface of the arc-shaped slot plate 321. The circuit component 332 includes an outer ring wiring 3321, one end of the outer ring wiring 3321 is fixedly connected to the inner wall of the arc-shaped slot plate 321, and the end of the outer ring wiring 3321 away from the arc-shaped slot plate 321 is fixedly connected to the outer surface of the bearing 312, and the bearing 312 is close to the boss 31 5 is fixedly connected to a conductive plate, and the side of the conductive plate close to the boss 315 is fixedly connected to a bearing wiring 3325. The end of the bearing wiring 3325 away from the bearing 312 is fixedly connected to a power supply 3326. A connecting wire 3324 is fixedly connected to the outer surface of the power supply 3326. The end of the connecting wire 3324 away from the power supply 3326 is fixedly connected to the alarm 3323. The outer surface of the alarm 3323 is fixedly connected to a cylinder wiring 3322. The end of the cylinder wiring 3322 away from the alarm 3323 is fixed to the outer surface of the guide block 323. The outer surface of one end of the outer ring wiring 3321 is fixedly connected to the inner wall of the connecting rod 3311. The outer surface of the end of the outer ring wiring 3321 away from the connecting rod 3311 is fixedly connected to the inner wall of the fixed cylinder 3314.The outer surfaces of the alarm 3323, connecting wire 3324, and power supply 3326 are all fixedly connected to the inner wall of the battery compartment 316. The outer surface of the barrel connection 3322 is fixedly connected to the inner wall of the ridge 317. The power supply 3326 and alarm 3323 are the main working components and can be easily replaced by placing them in the battery compartment 316.

[0041] Example 3, as Figures 1 to 12 As shown, on the basis of embodiments 1-2, the present invention provides a technical solution: the cover mechanism 4 includes an outer cover shell 41, the inner wall of the outer cover shell 41 is fixedly connected with a positioning column 42, the end of the positioning column 42 away from the outer cover shell 41 is movably connected to the outer surface of the connecting shaft 313, the inner wall of the outer cover shell 41 is fixedly connected with a pyramid 43, the outer surface of the pyramid 43 is slidably connected to the inner wall of the prism groove 314, the inner wall of the outer cover shell 41 is rotatably connected to the outer surface of the outer ring 3312, the inner wall of the outer cover shell 41 is fixedly connected with a key ring 44, the side of the key ring 44 is fixedly connected with a positioning block 45, the inner shell plate mechanism 5 includes a sliding plate 51, the outer surface of the sliding plate 51 is provided with a connecting groove 52, and the inner wall of the connecting groove 52 is provided with a fixed The positioning groove 53, the end of the sliding plate 51 close to the outer ring 3312 is fixedly connected with a protrusion 54, the outer surface of the sliding plate 51 is fixedly connected with a dial plate 55, the outer surface of the protrusion 54 slides with the inner wall of the guide groove 3313, the inner wall of the connecting groove 52 is slidably connected with the outer surface of the key ring 44, the inner wall of the positioning groove 53 is slidably connected with the outer surface of the positioning block 45, the pyramid 43 is slidably connected with the prism groove 314, the connection is simple and the disassembly and assembly are convenient, the sliding plate 51 slidably connected inside the outer cover shell 41 can be opened when the anti-loosening mechanism 3 needs to be adjusted, the guide block 323 and the arc groove plate 321 are made of conductive materials and are easily affected by the outside. When the sliding plate 51 is closed, the guide block 323 and the arc groove plate 321 can be isolated from contact with the external environment.

[0042] The following describes in detail the working principle of the externally mounted adjustable angle bolt loosening warning device:

[0043] When in use, the device is installed on the nut. When the bolt 2 is loosened, the guide block 323 slides in the arc groove plate 321. When the circuit in the device detects that the resistance increases to a certain value, the alarm 3323 starts to alarm. The tapered key 327 installed on the guide block 323 can reduce the resistance encountered during sliding, making the detection of the alarm 3323 more accurate. The pyramid 43 is slidably connected to the prism groove 314, the connection is simple and easy to assemble and disassemble, the sliding plate 51 slidably connected inside the outer cover shell 41 can be opened when the anti-loosening mechanism 3 needs to be adjusted, the positioning groove 53 and the protrusion 54 can prevent the sliding plate 51 from deviating when sliding, and the outer cover shell 41 can be rainproof and sun-proof when used outdoors. After the sliding plate 51 is closed, it can effectively resist the negative influence of the outdoor environment. The connection between the outer cover shell 41 and the outer ring 3312 and the prism block 311 can make the entire device more closely connected.

[0044] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An externally mounted, angle-adjustable bolt loosening warning device, comprising a plate (1), characterized in that: The surface of the plate (1) is threadedly connected with a bolt (2), the top of the bolt (2) is installed with an anti-loosening mechanism (3), the surface of the anti-loosening mechanism (3) is installed with a cover mechanism (4), the interior of the cover mechanism (4) is provided with an inner shell plate mechanism (5), the anti-loosening mechanism (3) includes a protective component (31), the protective component (31) is in contact with the surface of the bolt (2), the surface of the protective component (31) is provided with a contact component (32), the surface of the contact component (32) is installed with an alarm component (33), the alarm component (33) includes a connecting component (331), the connecting component (331) is connected to the outer surface of the protective component (31), and the interior of the connecting component (331) is provided with a circuit component (332).

2. The externally mounted, angle-adjustable bolt loosening warning device according to claim 1, characterized in that: The protective component (31) includes a prismatic block (311), the outer surface of the prismatic block (311) is fixedly connected to a bearing (312), the inner wall of the bearing (312) is rotatably connected to a connecting shaft (313), a prism groove (314) is provided on the surface of the prismatic block (311), a battery compartment (316) is provided on the surface of the prismatic block (311), a boss (315) is fixedly connected to the side of the prismatic block (311) close to the plate (1), a convex strip (318) is fixedly connected to the outer surface of the boss (315), and the outer surface of the boss (315) is movably connected to the outer surface of the bolt (2).

3. The externally mounted, angle-adjustable bolt loosening warning device according to claim 2, characterized in that: The contact component (32) comprises an arc-shaped slot plate (321), one end of the arc-shaped slot plate (321) is fixedly connected to a baffle (322), the inner wall of the arc-shaped slot plate (321) is provided with a tapered slot (324), the inner wall of the arc-shaped slot plate (321) is provided with a rectangular rail (325), the inner wall of the tapered slot (324) is slidably connected to a tapered key (327), the outer surface of the tapered key (327) is fixedly connected to a guide block (323), the inner wall of the rectangular rail (325) is slidably connected to a rectangular key (326), the outer surface of the rectangular key (326) is fixed to the outer surface of the guide block (323), the outer surface of the guide block (323) slides with the inner wall of the arc-shaped slot plate (321), and the end of the guide block (323) away from the arc-shaped slot plate (321) is fixed to the outer surface of the ridge (317).

4. The externally mounted angle-adjustable bolt loosening warning device according to claim 3, characterized in that: The connecting assembly (331) includes a connecting rod (3311), one end of the connecting rod (3311) is fixedly connected to a bearing (312), and the end of the connecting rod (3311) away from the bearing (312) is fixedly connected to an outer ring (3312), a guide groove (3313) is provided on the surface of the outer ring (3312), and a fixed cylinder (3314) is fixedly connected to the inner side of the outer ring (3312), and the inner side of the fixed cylinder (3314) is fixedly connected to the outer surface of the arc-shaped groove plate (321).

5. The externally mounted, angle-adjustable bolt loosening warning device according to claim 4, characterized in that: The circuit assembly (332) includes an outer ring wiring (3321), one end of the outer ring wiring (3321) is fixedly connected to the inner wall of the arc-shaped slot plate (321), and the end of the outer ring wiring (3321) away from the arc-shaped slot plate (321) is fixedly connected to the outer surface of the bearing (312), and the end of the bearing (312) close to the boss (315) is fixedly connected to a conductive plate, and the side of the conductive plate close to the boss (315) is fixedly connected to the bearing wiring (3325), and the bearing wiring (3321) is fixedly connected to the inner wall of the arc-shaped slot plate (321). The end of the guide block (325) away from the bearing (312) is fixedly connected to a power supply (3326), the outer surface of the power supply (3326) is fixedly connected to a connecting wire (3324), the end of the connecting wire (3324) away from the power supply (3326) is fixedly connected to an alarm (3323), the outer surface of the alarm (3323) is fixedly connected to a tube wiring (3322), and the end of the tube wiring (3322) away from the alarm (3323) is fixed to the outer surface of the guide block (323).

6. The externally mounted, angle-adjustable bolt loosening warning device according to claim 5, characterized in that: The outer surface of one end of the outer ring wiring (3321) is fixedly connected to the inner wall of the connecting rod (3311), the outer surface of one end of the outer ring wiring (3321) away from the connecting rod (3311) is fixedly connected to the inner wall of the fixed cylinder (3314), the outer surfaces of the alarm (3323), the connecting wire (3324) and the power supply (3326) are all fixedly connected to the inner wall of the battery compartment (316), and the outer surface of the cylinder wiring (3322) is fixedly connected to the inner wall of the prism (317).

7. The externally mounted angle-adjustable bolt loosening warning device according to claim 6, characterized in that: The cover mechanism (4) includes an outer cover shell (41), the inner wall of the outer cover shell (41) is fixedly connected to a positioning column (42), one end of the positioning column (42) away from the outer cover shell (41) is movably connected to the outer surface of the connecting shaft (313), the inner wall of the outer cover shell (41) is fixedly connected to a pyramid (43), the outer surface of the pyramid (43) is slidably connected to the inner wall of the prism groove (314), the inner wall of the outer cover shell (41) is rotatably connected to the outer surface of the outer ring (3312), the inner wall of the outer cover shell (41) is fixedly connected to a key ring (44), and the side of the key ring (44) is fixedly connected to a positioning block (45).

8. The externally mounted, angle-adjustable bolt loosening warning device according to claim 7, characterized in that: The inner shell plate mechanism (5) includes a sliding plate (51), the outer surface of the sliding plate (51) is provided with a connecting groove (52), the inner wall of the connecting groove (52) is provided with a positioning groove (53), one end of the sliding plate (51) close to the outer ring (3312) is fixedly connected to a protrusion (54), and the outer surface of the sliding plate (51) is fixedly connected to a shift plate (55).

9. The externally mounted, angle-adjustable bolt loosening warning device according to claim 8, characterized in that: The outer surface of the protrusion (54) slides with the inner wall of the guide groove (3313), the inner wall of the connecting groove (52) is slidably connected with the outer surface of the key ring (44), and the inner wall of the positioning groove (53) is slidably connected with the outer surface of the positioning block (45).

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