Anti-loose connecting device with displacement sensing function suitable for transmission tower

Abstract

The invention discloses an anti-loose connecting device with a displacement sensing function and suitable for a power transmission tower, and relates to the field of looseness prevention of connecting components of the tower, the anti-loose connecting device comprises a main bolt, a main nut is in threaded connection with the main bolt, a gasket is arranged on one side of the main nut, and the anti-loose connecting device further comprises a mounting base and two connecting assemblies, the mounting seat is detachably connected to the other ends of the two groups of connecting assemblies; through cooperation of the thin screw rod and the clamping nut, the installation base and the touch switch are fixed to the rear side of the main nut, when the main nut loosens and displaces, the end face of the main nut gets close gradually and finally triggers the touch switch located on the rear side of the main nut, the touch switch is triggered, and the main nut is driven to rotate. Therefore, timely sensing and active early warning of the bolt connection state are achieved, and structural failure or safety accidents caused by looseness of the nut are effectively prevented.

Description

Technical Field

[0001] This invention belongs to the field of anti-loosening of connection components for power transmission towers, and specifically relates to an anti-loosening connection device with displacement sensing function suitable for power transmission towers. Background Technology

[0002] As a key supporting structure for high-voltage transmission lines, the reliability of the connection nodes of transmission towers directly affects the safe and stable operation of the entire power system. During long-term service, the tower connection bolts are subject to complex dynamic loads such as wind vibration, conductor galloping, and earthquakes, making them prone to loosening. Once the nuts loosen, the stiffness and load-bearing capacity of the node will be significantly weakened, and in severe cases, it can lead to structural instability or even tower collapse.

[0003] In order to address the problem of loose bolts, in addition to traditional mechanical anti-loosening measures such as double nuts and spring washers, intelligent monitoring technology has been gradually introduced in recent years.

[0004] Currently, some bolt loosening monitoring devices integrate miniature displacement or pressure sensors inside the nut to detect changes in preload or relative displacement. However, embedding the sensor inside the nut body not only involves complex manufacturing processes and high costs, but may also weaken the nut's mechanical properties.

[0005] Therefore, we propose an anti-loosening connection device with displacement sensing function suitable for transmission towers to solve the above problems. Summary of the Invention

[0006] To address the problem that embedding sensors inside the nut body not only involves complex manufacturing processes and high costs, but may also weaken the mechanical properties of the nut, this invention provides an anti-loosening connection device with displacement sensing function suitable for power transmission towers.

[0007] The solution adopted by the present invention to solve its technical problem is: a non-loosening connection device with displacement sensing function suitable for transmission towers, including a main bolt, a main nut threaded on the main bolt, a washer provided on one side of the main nut, a mounting base and two sets of connecting components, one end of the connecting components being connected to the washer, and the mounting base being detachably connected to the other end of the two sets of connecting components; The mounting base is provided with a displacement detection element on the side near the main nut, and the mounting base is also provided with an alarm indicator connected to the displacement detection element; When the main nut is loosened and displaced, the relative position between the main nut and the displacement detection element changes, thereby triggering the displacement detection element and causing the alarm indicator to issue an alarm signal.

[0008] Preferably, the washer has a tapered sleeve on the side near the main nut, and the main nut has a tapered hole on the corresponding side that mates with the tapered sleeve.

[0009] Preferably, the conical sleeve has multiple notches circumferentially formed.

[0010] Preferably, the washer has two protruding lugs integrally connected, and the front and rear sides of the mounting base are integrally connected with connecting lugs.

[0011] Preferably, the displacement detection element is a tactile switch, with its trigger end corresponding to the end face of the main nut.

[0012] Preferably, the alarm indicator is an LED indicator or an audible and visual alarm.

[0013] Preferably, the connecting assembly includes a thin screw, one end of which is fixedly connected to the lug, and the other end of which passes through a through hole in the connecting lug. Two clamping nuts are threaded onto the thin screw, and the two clamping nuts clamp and fix the connecting lug.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a fine screw and a clamping nut to fix the mounting base and tactile switch to the rear side of the main nut. When the main nut loosens and shifts, the end face of the main nut will gradually approach and eventually trigger the tactile switch located on its rear side. The tactile switch is triggered, causing the alarm indicator to emit an alarm signal, thereby realizing timely perception and proactive warning of the bolt connection status, effectively preventing structural failure or safety accidents caused by nut loosening.

[0015] 2. This invention uses washers to connect the thin screw, providing a mounting base for the mounting seat without changing the structure of the nut. This allows for reliable fixing of the tactile switch without weakening the mechanical properties of the main nut. Furthermore, the external mounting seat and tactile switch make maintenance and replacement more convenient.

[0016] 3. The present invention further enhances the tightness of the connection between the main nut and the washer by using the tapered sleeve on the washer to cooperate with the tapered hole of the main nut, as well as the notch design on the tapered sleeve, thus realizing the integrated design of anti-loosening function and loosening monitoring function.

[0017] 4. By setting an alarm indicator, this invention can immediately emit a clear light or sound signal the moment the main nut becomes loose and triggers the tactile switch, enabling inspection personnel to quickly locate the specific position of the loose main nut without having to check all connection nodes of the transmission tower one by one, greatly improving the efficiency of fault diagnosis and significantly improving the efficiency of operation and maintenance. Attached Figure Description

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention; Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention; Figure 3This is a schematic diagram of the three-dimensional structure of the gasket of the present invention; Figure 4 This is a block diagram of the alarm system of the present invention.

[0019] In the diagram: 1 main bolt, 2 main nut, 3 washer, 31 lug, 32 tapered sleeve, 4 alarm indicator, 5 fine screw, 6 clamping nut, 7 mounting base, 71 connecting lug, 8 tactile switch. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1-4 This invention provides a technical solution for an anti-loosening connection device with displacement sensing function suitable for power transmission towers: Example 1: according to Figure 1-4 As shown, it includes a main bolt 1, a main nut 2 threadedly connected to the main bolt 1, a washer 3 on one side of the main nut 2, and two symmetrically distributed lugs 31 integrally connected to the washer 3.

[0022] The device also includes a mounting base 7 and two sets of connecting components. The mounting base 7 has connecting ears 71 integrally connected to both the front and rear sides. The connecting components include a thin screw 5. One end of the thin screw 5 is fixedly connected to the lug 31 by welding or thread fastening, and the other end passes through the through hole opened in the connecting ear 71. Two clamping nuts 6 are threaded on the thin screw 5. By tightening these two clamping nuts 6, the connecting ear 71 can be firmly clamped in the middle, thereby realizing the detachable connection between the mounting base 7 and the washer 3.

[0023] The mounting base 7 is provided with a displacement detection element on the side near the main nut 2. In this embodiment, the displacement detection element is a tactile switch 8, and its trigger end corresponds to the end face of the main nut 2. The mounting base 7 is also provided with an alarm indicator 4 connected to the tactile switch 8. The alarm indicator 4 can be a high-brightness LED indicator or an audible and visual alarm.

[0024] When the main nut 2 becomes loose and axially displaced due to external vibration or other factors, its end face will gradually move backward and eventually contact the trigger end of the tactile switch 8 and press it down. After the tactile switch 8 is closed, it will send an electrical signal to the local microcontroller (such as the low-power STM32L series). After receiving the signal, the microcontroller will immediately drive the alarm indicator 4 to emit a clear light or sound alarm signal to remind the inspection personnel that the connection here has become loose.

[0025] In practical use, the present invention provides an anti-loosening connection device with displacement sensing function for transmission towers. First, at the location where bolt connection is required on the transmission tower, the main bolt 1 is passed through the component to be connected (such as angle steel or crossarm), the washer 3 is put into the main bolt 1 and made to fit tightly against one side of the component to be connected, and then the main nut 2 is screwed in and tightened according to the torque specified in the engineering specifications, so that the main bolt 1 and the connected component form a reliable and fast connection. Align the two through holes of the connecting ear 71 with the two thin screws 5 on the washer 3 respectively, and insert the mounting base 7 through the two thin screws 5. Then, tighten the clamping nuts 6 on both sides of the connecting ear 71 one by one to fix the position of the mounting base 7. At this time, the trigger end of the light touch switch 8 is facing the end face of the main nut 2 and maintaining a distance of 0.5-2mm. When the main nut 2 loosens and undergoes axial displacement due to external vibration or other factors, its end face will gradually move backward and eventually contact the trigger end of the tactile switch 8 and press it down. After the tactile switch 8 is closed, it will send an electrical signal to the local microcontroller. After receiving the signal, the microcontroller will immediately drive the alarm indicator 4 to emit a clear light or sound alarm signal. If an inspection officer notices an alarm indicator 4 light up or sounds during a routine inspection, they can quickly locate the loose part and tighten or maintain it in time to prevent safety accidents caused by connection failure.

[0026] Example 2: Based on Example 1, such as Figure 1 and Figure 3 As shown, in order to enhance the anti-loosening effect, the washer 3 is provided with a tapered sleeve 32 on the side near the main nut 2, and the main nut 2 is provided with a tapered hole that mates with the tapered sleeve 32 on the corresponding side. When the main nut 2 is tightened, the tapered sleeve 32 will be embedded in the tapered hole, further enhancing the tightness of the connection between the main nut 2 and the washer 3.

[0027] The tapered sleeve 32 has multiple notches around its perimeter, which allows the tapered sleeve 32 to undergo a certain elastic deformation when under pressure, thereby better fitting the tapered hole and achieving the dual functions of mechanical anti-loosening and displacement sensing.

[0028] Example 3: Based on Example 1, such as Figure 4 As shown, this device can also integrate remote communication functions to achieve remote intelligent operation and maintenance.

[0029] Specifically, while triggering a local alarm, the microcontroller also activates a remote communication module. In this embodiment, the remote communication module adopts a 4G network-based wireless communication module (e.g., model: SIM868), which supports all networks and can insert a dedicated IoT SIM card.

[0030] The microcontroller sends out an alarm signal containing data such as the unique number of the faulty device, GPS location information, and the precise time of the fault occurrence through the remote communication module.

[0031] The receiving end includes a remote monitoring platform deployed in the power dispatch center, as well as mobile terminals (e.g., smartphones or tablets) carried by maintenance personnel.

[0032] Alarm information is displayed on the remote monitoring platform for centralized management. On the other hand, the system will directly notify nearby inspection personnel via SMS or a dedicated APP. This design allows maintenance personnel to accurately locate and handle loose faults in the first instance without relying on periodic manual inspections or waiting for user reports, greatly improving the intelligence level and response efficiency of power grid operation and maintenance.

Claims

1. A non-loosening connection device with displacement sensing function suitable for transmission towers, comprising a main bolt, a main nut threaded onto the main bolt, and a washer provided on one side of the main nut, characterized in that: It also includes a mounting base and two sets of connecting components, one end of which is connected to a washer, and the mounting base is detachably connected to the other end of the two sets of connecting components; The mounting base is provided with a displacement detection element on the side near the main nut, and the mounting base is also provided with an alarm indicator connected to the displacement detection element; When the main nut is loosened and displaced, the relative position between the main nut and the displacement detection element changes, thereby triggering the displacement detection element and causing the alarm indicator to issue an alarm signal.

2. The anti-loosening connection device with displacement sensing function applicable to transmission towers according to claim 1, characterized in that: The washer has a tapered sleeve on the side near the main nut, and the main nut has a tapered hole on the corresponding side that mates with the tapered sleeve.

3. The anti-loosening connection device with displacement sensing function applicable to transmission towers according to claim 2, characterized in that: The conical sleeve has multiple notches circumferentially opened around it.

4. The anti-loosening connection device with displacement sensing function applicable to transmission towers according to claim 1, characterized in that: The washer has two protruding lugs integrally connected, and the front and rear sides of the mounting base are integrally connected with connecting lugs.

5. The anti-loosening connection device with displacement sensing function applicable to transmission towers according to claim 1, characterized in that: The displacement detection element is a tactile switch, and its trigger end corresponds to the end face of the main nut.

6. The anti-loosening connection device with displacement sensing function applicable to transmission towers according to claim 1, characterized in that: The alarm indicator is an LED indicator or an audible and visual alarm.

7. The anti-loosening connection device with displacement sensing function applicable to transmission towers according to claim 4, characterized in that: The connecting assembly includes a thin screw, one end of which is fixedly connected to a lug, and the other end of which passes through a through hole in the connecting lug. Two clamping nuts are threaded onto the thin screw, and the two clamping nuts clamp and fix the connecting lug.

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