On-line monitoring device for looseness and fracture of supporting bolt of hinged support of radial gate

Abstract

The utility model discloses an on-line monitoring device for looseness and fracture of a supporting bolt of a hinged support of a radial gate, and relates to the technical field of bolt monitoring. The device comprises a device body and a permanent magnet, the device body comprises a shell, a wire is arranged in a through hole in the outer surface of the shell, an elastic pad, an internal PCB, an ultrasonic probe, a cover plate and an inner pressing plate are arranged in the shell, a front-end PCB and a dustproof ring are arranged at the end of the shell, and the permanent magnet is arranged in the shell. An inner thread is arranged on the inner surface of the shell, a first wire passing hole and a fourth wire passing hole are formed in the outer surface of the shell, a plug is arranged in the fourth wire passing hole, a Hall sensor array is arranged on the outer surface of the front-end PCB, and the Hall sensor array is arranged to be annular. According to the utility model, integrated real-time on-line monitoring of bolt fracture and nut looseness is realized, and an important front-end data source is provided for the safety of the gate hoist.

Description

Technical Field

[0001] This utility model relates to the field of bolt monitoring technology, specifically to an online monitoring device for loosening and breakage of support bolts on an arc-shaped gate hinge seat. Background Technology

[0002] Arc-shaped gates, as key equipment in water conservancy projects, are widely used in hydropower stations, ship locks, flood control dikes, and other scenarios. Their main function is to regulate water flow through opening and closing, undertaking important tasks such as water blocking, flood discharge, and water level control. The hinge support is the core load-bearing component of the arc-shaped gate, and the support bolts of the hinge support are important stress-bearing components. During the operation of the hinge support, it maintains stability and bears loads such as the gate's own weight and water pressure, which is the foundation for ensuring the safe and stable operation of the arc-shaped gate. In engineering practice, the failure modes of the support bolts mainly include: fatigue fracture (caused by alternating loads), stress corrosion cracking (caused by the combined effects of chemical erosion by water and mechanical stress), creep deformation (slow plastic deformation of materials under long-term high loads), and loosening of the threaded pair (loss of preload due to vibration or load fluctuations). Once the bolts loosen or break, it will directly lead to the instability of the hinge support structure, which in turn will cause major safety accidents such as gate jamming, overturning, or even dam failure, threatening people's lives and property and causing huge economic losses.

[0003] However, in engineering practice, due to the special position of the support bolts of the hinge seat, it is difficult to detect abnormalities such as broken support bolts and loose nuts during general inspections. Therefore, developing an online device that can monitor the loosening and breakage of the support bolts of the hinge seat of the arc gate in real time and accurately breaks through the limitations of traditional methods. This is of great significance for improving the safety of gate operation, reducing operation and maintenance costs, and promoting the intelligent management of water conservancy facilities. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an online monitoring device for the loosening and breakage of support bolts on an arc-shaped gate hinge seat, thereby solving the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an online monitoring device for loosening and breakage of support bolts of an arc-shaped gate hinge seat, comprising a device body and a permanent magnet. The device body includes a shell, with a through hole on the outer surface of the shell for a wire. Inside the shell, there is an elastic pad, an internal PCB board, an ultrasonic probe, a cover plate, and an inner pressure plate. At the end of the shell, there is a front-end PCB board and a dustproof ring. The inner surface of the shell has an internal thread. The outer surface of the shell has a first wire-passing hole and a fourth wire-passing hole. A plug is installed inside the fourth wire-passing hole. The outer surface of the front-end PCB board has a Hall sensor array, which is arranged in a ring.

[0006] Preferably, the outer surface of the housing is provided with a mounting ring, the end of the housing is provided with a mounting platform, the dustproof ring is provided at the mounting ring, and the front PCB board is provided at the mounting platform.

[0007] Preferably, the inner surface of the housing is fixedly connected with a first mounting boss, a second mounting boss, and a third mounting boss, and the inner pressure plate is disposed at the first mounting boss.

[0008] Preferably, the first mounting boss is configured as an unclosed ring, the unclosed part of the first mounting boss is provided with a wire notch, the inner cavity of the first mounting boss is provided with a mounting chamber, and the elastic pad is disposed in the mounting chamber.

[0009] Preferably, the outer surface of the internal PCB board is provided with a microcontroller, a triaxial accelerometer, a first connecting pad, and an ultrasonic drive receiver.

[0010] Preferably, the outer surface of the internal PCB board is provided with mounting holes and a second through hole, and the interior of the mounting holes is adapted to the outer surface of the second mounting boss.

[0011] Preferably, the outer surface of the front-end PCB board is provided with parallel-in / serial-out ICs, a second connection pad, and a third through hole.

[0012] Preferably, the cover plate is configured as an annular shape, and the screw holes on the outer surface of the cover plate are adapted to the outer surface of the third mounting boss.

[0013] Beneficial effects

[0014] This utility model provides an online monitoring device for the loosening and breakage of the support bolts of an arc-shaped gate hinge seat. It has the following beneficial effects:

[0015] 1. This online monitoring device for loosening and breaking of the support bolts of the arc-shaped gate hinge seat uses the synergistic effect of a Hall sensor array and a permanent magnet to monitor the absolute position change of the nut in the circumferential direction in real time. Combined with the detection of the deviation in the direction of gravitational acceleration by a triaxial accelerometer, it realizes dual online monitoring of bolt loosening and breaking, providing an important front-end data source for the safety of the gate opening and closing machine.

[0016] 2. The online monitoring device for loosening and breaking of the support bolts of the arc-shaped gate hinge seat, through customized shell length and installation structure design, ensures the fixed distance between the device and the bolt end and permanent magnet, and can avoid the monitoring data being affected by changes in the position of the monitoring device.

[0017] 3. The online monitoring device for loosening and breaking of the support bolts of the arc-shaped gate hinge seat, through the combination design of the sealed shell, dustproof ring and plug, forms a relatively sealed internal environment, ensuring long-term stable adhesion of the ultrasonic coupling agent and improving the accuracy and reliability of ultrasonic length measurement.

[0018] 4. The online monitoring device for loosening and breaking of the support bolts of the arc-shaped gate hinge seat uses a dual fixing method of adhesive and adsorption with permanent magnets to enhance its resistance to displacement under vibration environment and prevent displacement or falling off under vibration environment.

[0019] 5. The online monitoring device for loosening and breaking of the support bolts of the arc-shaped gate hinge seat provides flexible clamping force to the ultrasonic probe through an elastic pad, buffering vibration and shock, preventing coupling failure in a vibration environment, and ensuring continuous and effective transmission of ultrasonic signals.

[0020] 6. The online monitoring device for loosening and breaking of the support bolts of the arc-shaped gate hinge seat uses the cooperation of an ultrasonic probe and a drive receiver to determine whether the bolt is broken by measuring the bolt length with ultrasonic waves, thus overcoming the limitations of traditional inspection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an exploded structural diagram of the entire utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal PCB board of this utility model;

[0025] Figure 5 This is a schematic diagram of the front-end PCB board of this utility model;

[0026] Figure 6 This is a schematic diagram of the overall installation of this utility model;

[0027] Figure 7 This is a cross-sectional view of the overall installation of this utility model.

[0028] In the diagram: 1. Device body; 101. Outer shell; 1011. First wire guide hole; 1012. Mounting ring surface; 1013. Mounting platform; 1014. First mounting boss; 1015. Second mounting boss; 1016. Third mounting boss; 1017. Internal thread; 1018. Mounting chamber; 1019. Wire guide notch; 102. Wire; 103. Elastic pad; 104. Internal PCB board; 1041. Microcontroller; 1042. Triaxial accelerometer. ; 1043, Mounting hole; 1044, First connecting pad; 1045, Second wire hole; 1046, Ultrasonic drive receiver; 105, Ultrasonic probe; 106, Cover plate; 107, Inner pressure plate; 108, Front-end PCB board; 1081, Parallel-in serial-out IC; 1082, Hall sensor array; 1083, Second connecting pad; 1084, Third wire hole; 109, Dustproof ring; 110, Plug; 111, Fourth wire hole; 2, Permanent magnet. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figure 1-7As shown, this utility model provides an online monitoring device for loosening and breaking of support bolts on an arc-shaped gate hinge seat, including a device body 1 and a permanent magnet 2. The device body 1 includes a shell 101, with a through hole on the outer surface of the shell 101 for a wire 102. Inside the shell 101 are an elastic pad 103, an internal PCB board 104, an ultrasonic probe 105, a cover plate 106, and an inner pressure plate 107. At the end of the shell 101 are a front-end PCB board 108 and a dustproof ring 109. The inner surface of the shell 101 has an internal thread 1017. The outer surface of the shell 101 has a first wire passage hole 1011 and a fourth wire passage hole 111. Inside the fourth wire passage hole 111 is a wire 102. The plug 110 has a Hall sensor array 1082 on the outer surface of the front PCB board 108. The Hall sensor array 1082 is ring-shaped. The ultrasonic probe 105 has a rigid connector. The plug 110 is made of soft rubber. The dustproof ring 109 is an annular soft rubber with an L-shaped cross-section. It is installed in conjunction with the mounting ring surface 1012 on the housing 101. The wire 102 is used to connect the front PCB board 108, the inner PCB board 104, and the ultrasonic probe 105 for power supply and external communication. When in use, the housing 101 is tightened to the end of the bolt through the internal thread 1017 inside the housing 101. The permanent magnet 2 is axially magnetized and is attracted and adhered to the end face of the nut when in use.

[0032] Specifically, the outer surface of the housing 101 is provided with a mounting ring surface 1012, the end of the housing 101 is provided with a mounting platform 1013, a dustproof ring 109 is provided at the mounting ring surface 1012, the front PCB board 108 is provided at the mounting platform 1013, the inner surface of the housing 101 is fixedly connected with a first mounting boss 1014, a second mounting boss 1015 and a third mounting boss 1016, an inner pressure plate 107 is provided at the first mounting boss 1014, the first mounting boss 1014 is set as an unclosed ring, the unclosed part of the first mounting boss 1014 is provided with a wire-passing notch 1019, the inner cavity of the first mounting boss 1014 is provided with a mounting chamber 1018, and an elastic pad 103 is installed inside the mounting chamber 1018. The outer surface of the internal PCB board 104 is provided with a microcontroller 1041, a triaxial accelerometer 1042, a first connecting pad 1044 and an ultrasonic drive receiver 1046. The outer surface of the internal PCB board 104 is provided with mounting holes 1043 and a second through hole 1045. The interior of the mounting hole 1043 is adapted to the outer surface of the second mounting boss 1015. The outer surface of the front PCB board 108 is provided with a parallel-in-serial IC 1081, a second connecting pad 1083 and a third through hole 1084. The cover plate 106 is set as an annular shape. The screw holes on the outer surface of the cover plate 106 are adapted to the outer surface of the third mounting boss 1016.

[0033] During fabrication and installation, the elastic pad 103 is installed in the mounting chamber 1018 inside the housing 101. The internal PCB board 104 is electrically connected to the ultrasonic probe 105. The power and communication wires 102 are threaded through the wire hole at the bottom of the housing 101 and electrically connected to the internal PCB board 104. The electrical wires 102 leading to the front-end PCB board 108 are connected through the first connection pad 1044 of the internal PCB board 104. The non-working end face of the ultrasonic probe 105 is placed on the elastic pad 103 in the mounting chamber 1018. The angle is adjusted so that the rigid connector on the ultrasonic probe 105 is positioned at the notch of the first mounting boss 1014. The internal PCB board 104 is then installed. Board 104 is mounted on the second mounting boss 1015 on the housing 101. Electrical wires 102 leading to the front-end PCB 108 are led out from the first through-hole 1011 (set as a right-angle channel) inside the housing 101 to the mounting platform 1013. Inner pressure plate 107 is mounted on the first mounting boss 1014 inside the housing 101. The front-end PCB 108 is placed on the mounting platform 1013 on the housing 101 and electrically connected to the inner PCB 104 via wires 102. After electrical testing confirms correctness, cover plate 106 is mounted on the third mounting boss 1016 inside the housing 101. Dust ring 109 is fitted onto the mounting ring surface 101 on the housing 101. Two locations are specified, and the front-end PCB board 108 is pressed and fixed. To facilitate the processing and wire threading of the first wire-passing hole 1011, which is set as a right-angle channel, a fourth wire-passing hole 111 communicating with the first wire-passing hole 1011 is opened on the outer shell 101. After the wire is threaded, the plug 110 is inserted into the fourth wire-passing hole 111 on the outer shell 101. During on-site installation, the outer shell 101 of different lengths is customized according to the different exposed screw lengths after the project installation (the basic principle is: when this device is screwed into the exposed screw end, when the ultrasonic probe 105 abuts against the bolt end, the working surface of the front-end PCB board 108 is 1-20mm away from the working surface of the permanent magnet 2 on the nut, that is, the structure remains unchanged, and the length is adjusted accordingly). (Customized) Grind the ends of the bolts to make them flat and expose the metallic luster. Apply or paste ultrasonic coupling agent to the ground bolt ends. Apply glue to the non-working end face of the nut. Attract and bond the S pole of the permanent magnet 2 to the non-working surface of the nut. Adjust the position so that the circle formed by the center of the permanent magnet 2 relative to the circle of the nut has the same radius as the circle of the Hall sensor array 1082 on the front PCB board. Screw the assembled and tested device body 1 into the bolt end. When the ultrasonic probe 105 touches the end of the bolt, tighten it slightly. Electrically connect and test the coupling of the ultrasonic probe 105 and record the direction of gravitational acceleration after installation.

[0034] The working principle of the above embodiments:

[0035] During operation, a permanent magnet 2 is installed on the tightened nut. The absolute position of the permanent magnet 2 in the circumferential direction is sensed by the ring Hall sensor array 1082 on the front PCB board 108 inside the housing 101, thereby determining whether the nut is rotating. The direction of the device's gravitational acceleration relative to the Earth is determined by the triaxial accelerometer 1042 on the internal PCB board 104. When the device becomes loose and rotates, the triaxial accelerometer 1042 can calculate the presence or absence of loosening and the amount of angular change caused by the detected change in gravitational acceleration. The device integrates an ultrasonic probe 105, which can monitor whether a bolt is broken by ultrasonic length measurement. When the bolt is normal, the length of the bolt can be measured by ultrasonic echo reflection. When the measured bolt length changes significantly, it can be determined whether the bolt has broken. In summary, this device can simultaneously monitor bolt loosening and bolt breakage. This device can be manufactured according to bolts of different specifications. The length of the outer shell 101 is customized to accommodate bolts of different exposed lengths. This device cannot be installed on bolts that are perpendicular to the horizontal plane, because changes in gravitational acceleration cannot be monitored in this case.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online monitoring device for loosening and breaking of support bolts of a radial gate hinge support seat, comprising a device body (1) and a permanent magnet (2), characterized in that: The device body (1) includes a housing (101), with a through hole on the outer surface of the housing (101) for a wire (102). Inside the housing (101) are an elastic pad (103), an internal PCB board (104), an ultrasonic probe (105), a cover plate (106), and an inner pressure plate (107). At the end of the housing (101) are a front-end PCB board (108) and a dustproof ring (109). The inner surface of the housing (101) is provided with an inner... The outer surface of the housing (101) is provided with a first wire hole (1011) and a fourth wire hole (111). The interior of the first wire hole (1011) is connected to the interior of the fourth wire hole (111). A plug (110) is provided inside the fourth wire hole (111). The outer surface of the front PCB board (108) is provided with a Hall sensor array (1082). The Hall sensor array (1082) is arranged in a ring shape.

2. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 1, characterized in that: The outer surface of the housing (101) is provided with a mounting ring (1012), the end of the housing (101) is provided with a mounting platform (1013), the dustproof ring (109) is provided at the mounting ring (1012), and the front PCB board (108) is provided at the mounting platform (1013).

3. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 1, characterized in that: The inner surface of the outer shell (101) is fixedly connected with a first mounting boss (1014), a second mounting boss (1015) and a third mounting boss (1016), and the inner pressure plate (107) is disposed at the first mounting boss (1014).

4. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 3, characterized in that: The first mounting boss (1014) is configured as an unclosed ring, and a wire notch (1019) is provided at the unclosed part of the first mounting boss (1014). The inner cavity of the first mounting boss (1014) is provided with a mounting chamber (1018), and the elastic pad (103) is disposed in the mounting chamber (1018).

5. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 1, characterized in that: The outer surface of the internal PCB board (104) is provided with a microcontroller (1041), a triaxial accelerometer (1042), a first connection pad (1044), and an ultrasonic drive receiver (1046).

6. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 3, characterized in that: The outer surface of the internal PCB board (104) is provided with mounting holes (1043) and a second through hole (1045), and the interior of the mounting holes (1043) is adapted to the outer surface of the second mounting boss (1015).

7. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 1, characterized in that: The outer surface of the front-end PCB board (108) is provided with a parallel-in / serial-out IC (1081), a second connection pad (1083), and a third through hole (1084).

8. The monitoring device for monitoring loosening and breaking of support bolts of a radial gate hinge seat support bolt according to claim 3, characterized in that: The cover plate (106) is configured as an annular shape, and the screw holes on the outer surface of the cover plate (106) are adapted to the outer surface of the third mounting boss (1016).

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