Intelligent anti-loosening early warning nut

Abstract

The utility model provides a kind of intelligent anti-loose early warning nut, including first nut, gasket and second nut, and the side end face of first nut is provided with early warning switch;Gasket is provided with mounting hole along its axial direction, and switch starting block is slidably arranged in mounting hole, and the side of gasket is provided with fixed ring coaxial with it, and switch starting block can enter and exit fixed ring in sliding process, and protrude from gasket end face after leaving fixed ring;Fixed ring is sleeved in second nut outer, and rotates synchronously with second nut, so that switch starting block triggers early warning switch.The utility model can issue alarm when nut occurs circumferential slight rotation, compared with the mode that early warning is triggered after nut rotates multiple rounds and occurs axial movement, can issue alarm when nut axial movement is not obvious, improves early warning sensitivity to some extent.

Description

Technical Field

[0001] This utility model relates to the field of early warning nuts, specifically an intelligent anti-loosening early warning nut. Background Technology

[0002] In the power industry, transmission towers are constantly exposed to the natural environment and are highly susceptible to external factors. Especially under extreme weather conditions such as strong winds, torrential rain, and freezing temperatures, the loosening of tower fasteners poses a serious threat to the safety and stability of the entire structure. Traditional fasteners such as nuts and bolts commonly loosen over long-term use due to the harsh environmental conditions of high and low temperatures and high humidity.

[0003] Currently, traditional fasteners lack effective monitoring methods, and maintenance work mainly relies on regular manual inspections. This method is not only inefficient but also makes it difficult to detect potential safety hazards in a timely manner, leading to increased maintenance costs for transmission towers and posing significant challenges to the safety and stability of power transmission.

[0004] To improve the efficiency of fastener condition monitoring and promptly detect potential safety hazards, existing technologies have disclosed several early warning devices capable of detecting fastener conditions and triggering alarms when nuts become loose. For example, Chinese utility model patent CN210983646 U uses microswitches, infrared, or sensing principles to monitor the distance between the nut and a multi-platform alarm device; when the distance is less than or equal to a set value, the control device is triggered, and the device emits light to sound an alarm. Another Chinese utility model patent CN 218886676 U uses a pressure-sensing switch to generate on / off signals; a control circuit board generates alarm signals based on these on / off signals.

[0005] Accurate monitoring of nut tightness and timely alarm issuance when nuts become loose are crucial for ensuring the safety of power transmission and the stability of power systems. Most current early warning devices require monitoring the nut for loosening and axial movement before triggering an alarm by detecting the distance of axial movement or the nut pressing against a switch. Their sensitivity needs further improvement. Utility Model Content

[0006] In order to accurately monitor the tightness of nuts and improve the sensitivity of early warning, this utility model provides an intelligent anti-loosening early warning nut.

[0007] To achieve the above objectives, the specific solution adopted by this utility model is as follows: an intelligent anti-loosening early warning nut, comprising a first nut, a washer, and a second nut.

[0008] A warning switch is provided on one end face of the first nut;

[0009] The gasket has an axial mounting hole, in which a switch starter block is slidably mounted. A retaining ring is provided on one side of the gasket, which is coaxial with it. The switch starter block can move in and out of the retaining ring during sliding and protrude from the end face of the gasket after leaving the retaining ring. The retaining ring is sleeved on the second nut and rotates synchronously with the second nut so that the switch starter block triggers the warning switch.

[0010] As a further optimization of the above technical solution: both ends of the switch start block are provided with limit plates to prevent it from disengaging from the mounting hole.

[0011] As a further optimization of the above technical solution: the sum of the width of the fixing ring and the thickness of the gasket is not less than the length of the switch starting block along the axial direction of the fixing ring.

[0012] As a further optimization of the above technical solution: the switch start block is set to one.

[0013] As a further optimization of the above technical solution: three warning switches are set and arranged circumferentially along the end face of the first nut.

[0014] As a further optimization of the above technical solution: the second nut is a hexagonal nut, and the retaining ring is an internal hexagonal ring that is compatible with the hexagonal nut.

[0015] As a further optimization of the above technical solution: an anti-loosening spring is embedded in the second nut in an interference fit manner.

[0016] As a further optimization of the above technical solution: the first nut has a mounting hole for the fastening screw to pass through, and the fastening screw can pass through the inner surface of the first nut.

[0017] As a further optimization of the above technical solution: the first nut has a receiving chamber, and a flashlight and a button power supply are installed in the receiving chamber.

[0018] As a further optimization of the above technical solution: the first nut includes a nut body and an end cap, the end cap is located on the side opposite to the warning switch and is detachably connected to the nut body, and the receiving chamber is disposed in the nut body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention can issue an alarm when the nut rotates slightly in the circumferential direction. Compared with the method of triggering an alarm after the nut rotates many times and moves a certain distance in the axial direction, this invention issues an alarm when the axial movement of the nut is not obvious, which improves the warning sensitivity to a certain extent.

[0021] This invention involves creating mounting holes in a gasket and sliding a switch activation block within those holes. Before the gasket's retaining ring engages with the second nut, the switch activation block is located within the retaining ring. When the retaining ring engages with the second nut, the second nut pushes the activation block to slide away from the retaining ring. The switch activation block protrudes from the gasket surface and is positioned within the gap between the first nut and the gasket. When the second nut becomes loose, it first undergoes circumferential rotation. This rotation causes the gasket and the activation block on it to rotate circumferentially, bringing the switch activation block into contact with the warning switch and triggering an alarm.

[0022] This invention achieves primary anti-loosening by incorporating an anti-loosening spring within the second nut, and secondary anti-loosening by securing the first nut to the bolt with a fastening screw. The dual function of primary and secondary anti-loosening improves the tightness of the warning nut at the target position, enhances the anti-loosening effect, and reduces the possibility of nut loosening. This invention features a simple overall structure, reliable connection, and convenient installation and use, facilitating simplified production and manufacturing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 A schematic diagram of the structure on the side where a warning switch is installed for the first nut;

[0026] Figure 4 This is a schematic diagram of the gasket structure;

[0027] Figure 5 This is a cross-sectional view of the gasket;

[0028] Figure 6 This is a cross-sectional view of the nut body;

[0029] Figure 7 This is a schematic diagram of the internal structure of the nut body;

[0030] Figure 8 This is a schematic diagram of the end cap structure;

[0031] Figure 9 This is a schematic diagram of the second nut.

[0032] Reference numerals: 1. First nut; 101. Nut body; 102. End cap; 2. Washer; 3. Retaining ring; 4. Second nut; 5. Bolt; 6. Fastening screw; 7. Switch start block; 8. Warning switch; 9. Limit plate; 10. Mounting hole; 11. Flashing light; 12. Button power supply; 13. Anti-loosening spring; 14. First thread. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art, such as the specific structure of the warning switch 8, the connection method between the warning switch 8 and the button power supply 12 and the flash lamp 11, etc.

[0034] like Figure 1 As shown, this utility model discloses an intelligent anti-loosening early warning nut, including a first nut 1, a washer 2, and a second nut 4. In use, the first nut 1, washer 2, and second nut 4 are all installed on bolts 5 at target positions such as tower angle steel and diversion plates. The bolt heads of the second nut 4 and bolts 5 are located on both sides of the target position. When the second nut 4 becomes loose, the second nut 4 drives the washer 2 to rotate, causing the switch activation block 7 on the washer 2 to contact the early warning switch 8 and issue an alarm signal.

[0035] The structure of the warning nut is described below, taking into account its state after installation on bolt 5:

[0036] Combination Figure 7 , 8 As shown, the inner surface of the first nut 1 is provided with a first thread 14 that is compatible with the bolt 5. A warning switch 8 is provided on one end face of the first nut 1. Multiple warning switches 8 are provided and are evenly distributed around the end face of the first nut 1. The first nut 1 has a receiving chamber, which is equipped with a flashlight 11 and a button power supply 12. When the second nut 4 becomes loose and triggers the warning switch 8, the flashlight 11 can emit a warning light, making it easy for staff to notice in time and realizing intelligent warning of loose nuts.

[0037] The first nut 1 includes a nut body 101 and an end cap 102, with a receiving compartment located inside the nut body 101. The end cap 102 is located on the side opposite to the warning switch 8 and is detachably connected to the nut body 101. In this embodiment, the nut body 101 and the end cap 102 are detachably connected by a snap-fit ​​mechanism, facilitating the installation, replacement, and maintenance of the flash lamp 11 and the button power supply 12 within the receiving compartment. The threads of the first nut 1 that are compatible with the bolt 5 are formed on the nut body 101. When it is necessary to replace the flash lamp 11 or the button power supply 12, the end cap 102 can be removed from the nut body 101 for the corresponding operation. The method of fixing the flash lamp 11 and the button power supply 12 within the receiving compartment, as well as the connection method between the flash lamp 11, the button power supply 12, and the warning switch 8, are all existing technologies.

[0038] like Figure 1 , 4As shown in Figure 5, a retaining ring 3 is provided on the right side of the washer 2, which can be locked onto the second nut 4. The retaining ring 3 is coaxially arranged with the washer 2. A mounting hole 10 is provided on the washer 2, and a switch actuating block 7 is slidably disposed in the mounting hole 10. The switch actuating block 7 can enter the retaining ring 3 and can be moved to the side of the washer 2 opposite to the retaining ring 3 under external force, protruding from the surface of the washer 2. The retaining ring 3 has an inner ring that is adapted to fit the second nut 4, so that it is sleeved on the second nut 4, so that the retaining ring 3, the washer 2 on it, and the switch actuating block 7 can rotate synchronously with the second nut 4. During the circumferential rotation of the switch actuating block 7, the warning switch 8 is triggered. The thickness of the washer 2 is greater than the pitch of the bolt 5 to prevent the washer 2 from getting stuck in the thread of the bolt 5 and affecting the axial movement of the washer 2.

[0039] like Figure 3 , 4 As shown, there are three warning switches 8 evenly distributed along the end face of the first nut 1. A single switch activation block 7 is provided, protruding from the surface of the washer 2 and located between two of the warning switches 8. Therefore, the switch activation block 7 can activate one of the warning switches 8 within a 120° rotation. Compared to the method where the alarm is triggered after the second nut 4 rotates multiple times and undergoes axial movement, this invention can issue an alarm when the axial movement of the second nut 4 is not significant, thus improving the warning sensitivity to a certain extent.

[0040] The switch start block 7 is a rectangular block, and limit plates 9 are provided at both ends along the axial direction of the gasket 2. The limit plates 9 are vertically fixed to the switch start block 7. The connection method can be welding or integral molding. The plate surface of the limit plate 9 is parallel to the gasket 2. The shape of the limit plate 9 is not limited, such as rectangular or circular, as long as the limit plate 9 does not detach from the mounting hole 10.

[0041] The sum of the width of the retaining ring 3 and the thickness of the gasket 2 is not less than the length of the switch actuating block 7 along the axial direction of the retaining ring 3, providing space for the movement of the switch actuating block 7. It should be noted that the width of the retaining ring 3 is the height by which the retaining ring 3 protrudes from the gasket 2.

[0042] like Figure 1 , 2As shown, in use, first install the second nut 4 on the bolt 5 and screw it in to the target position; then install the washer 2 on the bolt 5. At this time, the switch start block 7 is located inside the fixing ring 3 of the washer 2, and the second nut 4 is located outside the fixing ring 3. The left limiting plate 9 of the switch start block 7 is close to the left surface of the washer 2; then install the first nut 1 on the bolt 5. Since the limiting plate 9 of the switch start block 7 is close to the surface of the washer 2, it can prevent the switch start block 7 from contacting the warning switch 8 on the first nut 1 in advance when the first nut 1 rotates and moves axially on the bolt 5, thus affecting the installation of the first nut 1; after the first nut 1 is installed, there is a certain gap between it and the washer 2, and the warning switch 8 is located in the gap; then adjust the angle of the washer 2 circumferentially and push the washer 2 to the right, so that the fixing ring 3 of the washer 2 is locked on the second nut 4. The second nut 4 pushes out the switch start block 7, so that the left end of the switch start block 7 protrudes from the surface of the washer 2. When the switch start block 7 rotates circumferentially with the loosened second nut 4, the warning switch 8 is located within the area swept by the switch start block 7 as the shim 2 rotates, which can trigger the warning switch 8.

[0043] Considering practical application scenarios and versatility, the second nut 4 is a hexagonal nut, and the retaining ring 3 is an internal hexagonal ring that is compatible with the hexagonal nut, which facilitates installation and operation. Furthermore, the cooperation between the hexagonal nut and the internal hexagonal ring ensures that the internal hexagonal ring rotates with the hexagonal nut, preventing the second nut 4 from sliding inside the retaining ring 3 and affecting the synchronous rotation of the washer 2 and the second nut 4.

[0044] like Figure 1 , 6 As shown in Figures 9 and 1, in order to enhance the anti-loosening effect, an anti-loosening spring 13 is embedded in the second nut 4 with an interference fit. The first nut 1 has an installation hole 10 for the fastening screw 6 to pass through, and the fastening screw 6 can pass through the inner surface of the first nut 1 and press against the thread groove on the outside of the bolt 5. Through the double anti-loosening design, the tightness of the warning nut on the bolt 5 is improved.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smart lock nut for providing a pre-warning of loosening, characterized in that: The first nut (1), the gasket (2) and the second nut (4), The first nut (1) is provided with a warning switch (8) on one side end face; The gasket (2) is provided with a mounting hole (10) along the axial direction, and the mounting hole (10) is slidably provided with a switch starting block (7). One side of the gasket (2) is provided with a fixing ring (3) coaxial with the gasket (2). The switch starting block (7) can enter and exit the fixing ring (3) during sliding, and protrude from the end face of the gasket (2) after leaving the fixing ring (3). The fixing ring (3) can be sleeved outside the second nut (4) and rotate synchronously with the second nut (4), so that the switch starting block (7) triggers the warning switch (8).

2. The intelligent anti-loosening early-warning nut according to claim 1, characterized in that: Both ends of the switch starting block (7) are provided with limiting plates (9) for limiting the disengagement of the switch starting block (7) from the mounting hole (10).

3. The intelligent anti-loosening warning nut according to claim 1, characterized in that: The sum of the width of the fixing ring (3) and the thickness of the gasket (2) is not less than the length of the switch starting block (7) along the axial direction of the fixing ring (3).

4. The intelligent anti-loosening warning nut according to claim 1, characterized in that: The switch starting block (7) is provided as one.

5. The intelligent anti-loosening warning nut according to claim 1, characterized in that: The warning switch (8) is provided as three and arranged circumferentially along the end face of the first nut (1).

6. The intelligent anti-loosening warning nut of claim 1, wherein: The second nut (4) is a hexagonal nut, and the fixing ring (3) is an internal hexagonal ring matched with the hexagonal nut.

7. The intelligent anti-loosening warning nut according to claim 1, characterized in that: The second nut (4) is embedded with a lock spring (13) in an interference fit manner.

8. The intelligent anti-loosening warning nut according to claim 1, characterized in that: The first nut (1) is provided with a mounting hole for the fastening screw (6) to pass through, and the fastening screw (6) can pass through the inner surface of the first nut (1).

9. The intelligent anti-loose warning nut according to claim 1, characterized in that: The first nut (1) has a containing bin, and the containing bin is provided with a flash lamp (11) and a button power supply (12).

10. The intelligent anti-loosening early-warning nut of claim 9, wherein: The first nut (1) includes a nut body (101) and an end cover (102), the end cover (102) is located on the side opposite to the warning switch (8), and is detachably connected with the nut body (101). The containing bin is arranged in the nut body (101).

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