A loosening detection device for bolted connections

Abstract

The utility model relates to bolt fixed detection technical field especially a kind of loosening detection equipment suitable for bolt fixed, including fixed subassembly, including screw rod and the fixed sheet integrally formed in the end face of screw rod;And, detection subassembly, including the installation box being arranged in the end face of fixed sheet, contact point being movably arranged in the lower end surface of installation box and pressure sensor being fixedly installed in the inside of installation box;Wherein, contact point is contacted with fixed sheet, the pressure between the two is monitored in real time by pressure sensor, so that personnel can determine the fixed state of bolt, fixed subassembly further includes the fixed nut being fixedly connected in the lower end surface of screw rod, the utility model realizes the fixed state of bolt by fixed subassembly, the stability that installation box outer wall contact point and fixed sheet contact is guaranteed by nut of upper and lower side, the pressure that fixed sheet bears is simultaneously transferred to ground terminal or alarm platform in real time by pressure sensor, personnel is convenient to confirm bolt fixed state.

Description

Technical Field

[0001] This utility model relates to the field of bolt fixing detection technology, and in particular to a loosening detection device for bolt fixing. Background Technology

[0002] Bolts, as one of the most basic and widely used mechanical fasteners, consist of a head and a shank. By mating with a nut or a workpiece with internal threads, and utilizing the self-locking properties of the threaded pair, they play an indispensable role in connecting and fastening in many industrial fields such as machinery, construction, bridges, rail transportation, and wind turbine towers. They enable detachable connections between two or more parts and are a key basic component for ensuring the integrity of various equipment and structures.

[0003] The reliability of bolted connections directly determines the safety and service life of the entire structure or equipment. Once a bolted connection fails, it can lead to a decrease in the operating accuracy of the equipment and abnormal noise, or even structural disintegration, equipment shutdown, or safety accidents, resulting in huge economic losses and casualties. Therefore, real-time monitoring and early warning of the status of bolted connections is a crucial issue in the field of industrial safety.

[0004] Currently, traditional methods for detecting bolt loosening mainly rely on regular manual inspections, such as using a torque wrench to retighten, observing misaligned markings, or tapping and listening to sounds based on experience. However, these methods are not real-time monitoring, have a certain lag, cannot provide real-time alarms, and increase the workload of personnel. Although some sensor-based monitoring technologies have emerged in the market, these solutions often have problems with complex structures and inconvenient installation, making it difficult to popularize them in industrial scenarios that require large-scale, low-cost deployment. Utility Model Content

[0005] In view of the problems existing in the above or prior art, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a loosening detection device suitable for bolt fixing.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A loosening detection device suitable for bolt fixing, comprising: a fixing component including a screw and a fixing plate integrally formed on the end face of the screw; and a detection component including a mounting box disposed on the end face of the fixing plate, a contact movably disposed on the lower end face of the mounting box, and a pressure sensor fixedly installed inside the mounting box; wherein, the contact contacts the fixing plate, and the pressure sensor monitors the pressure between the two in real time, so that personnel can determine the fixing status of the bolt.

[0008] As a preferred embodiment of the loosening detection device for bolt fixing according to this utility model, the fixing component further includes a fixing nut fixedly connected to the lower end face of the screw, and a positioning nut is threadedly connected to the outer wall of the screw.

[0009] As a preferred embodiment of the present invention, a loosening detection device for bolt fixing is provided, wherein: the detection component further includes a cavity cover disposed on the outer wall of the mounting box, and a screw ring is integrally formed on the lower end face of the cavity cover.

[0010] As a preferred embodiment of the present invention, a loosening detection device for bolt fixing is provided, wherein: the inner wall of the mounting box is provided with an inner groove adapted to the screwing ring, and the screwing ring is threadedly connected to the inner wall of the inner groove.

[0011] As a preferred embodiment of the loosening detection device for bolt fixing according to this utility model, the contact points are designed in multiple groups and are distributed in a ring around the center of the mounting box, and the end face of the contact points is fixedly connected to a connecting rod.

[0012] As a preferred embodiment of the present invention, a loosening detection device for bolt fixing is provided, wherein: a connecting piece is fixedly connected to the outer wall of the connecting rod, the connecting piece is disposed on the inner bottom wall of the mounting box, and the pressure sensor is connected to the connecting piece.

[0013] The beneficial effects of this utility model on a loosening detection device for bolt fixing are as follows: This utility model achieves the fixed state of the bolt through a fixing component, and ensures the stability of the contact between the outer wall contact point of the mounting box and the fixing plate through the nuts on the upper and lower sides. At the same time, the pressure sensor transmits the pressure borne by the fixing plate to the ground terminal or alarm platform in real time, which makes it easy for personnel to confirm the bolt fixing status. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a loosening monitoring device suitable for bolt fixing.

[0016] Figure 2 This is a schematic diagram of a fixing component structure for a loosening monitoring device suitable for bolt fixing.

[0017] Figure 3This is a schematic diagram of the detection component structure of a loosening detection device for bolt fastening.

[0018] Figure 4 This is a schematic diagram of the disassembled structure of a detection component for a loosening detection device suitable for bolt fastening.

[0019] Figure 5 This is a partial structural diagram of a detection component for a bolt loosening detection device.

[0020] The components are: 1. Fixing assembly; 11. Screw; 12. Fixing plate; 13. Fixing nut; 14. Positioning nut; 2. Detection assembly; 21. Mounting box; 22. Cavity cover; 23. Inner groove; 24. Tightening ring; 25. Contact point; 26. Connecting rod; 27. Connecting plate; 28. Pressure sensor. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Reference Figures 1 to 5 A loosening detection device for bolt fixing includes a fixing component 1, which includes a screw 11 and a fixing plate 12 integrally formed on the end face of the screw 11; wherein the screw 11 has a certain length for passing through the parts that need to be connected, and the fixing plate 12 is located at the end of the screw 11, and is generally disc-shaped for contacting the contact point 25 of the detection component 2.

[0025] And, the detection component 2 includes a mounting box 21 disposed on the end face of the fixed plate 12, a contact 25 movably disposed on the lower end face of the mounting box 21, and a pressure sensor 28 fixedly installed inside the mounting box 21; wherein, the mounting box 21 is disposed on the upper surface of the fixed plate 12, and a plurality of contacts 25 are movably connected to the bottom wall of the mounting box 21.

[0026] The pressure sensor 28 transmits the pressure received by the contact 25 to the ground display terminal through an electrical signal. It can also work with an alarm system to trigger the alarm system when the monitored pressure changes. The sensor technology and alarm system mentioned above are all existing mature technologies, so they will not be explained in detail here.

[0027] The contact point 25 contacts the fixing plate 12, and the pressure sensor 28 detects the pressure between the two in real time so that personnel can determine the fixing status of the bolt.

[0028] Specifically, the fixing component 1 also includes a fixing nut 13 fixedly connected to the lower end face of the screw 11, and a positioning nut 14 threadedly connected to the outer wall of the screw 11. The fixing nut 13 is integrated with the screw 11 and positioned at the bottom of the screw 11, while the positioning nuts 14 are in two sets and located above the detection component 2. The positioning nuts 14 are used to ensure a tight connection between the screw 11 and the target component.

[0029] Reference Figures 3-5 The detection component 2 also includes a cavity cover 22 disposed on the outer wall of the mounting box 21, and a screw ring 24 integrally formed on the lower end face of the cavity cover 22. The cavity cover 22 and the mounting box 21 together form a sealed space, and the screw ring 24 is integrally designed with the cavity cover 22, and its outer wall is provided with external threads.

[0030] Specifically, the inner wall of the mounting box 21 has an inner groove 23 that matches the screw ring 24, and the screw ring 24 is threaded onto the inner wall of the inner groove 23. The inner groove 23 inside the mounting box 21 is deeper than the screw ring 24 to ensure the proper installation of the pressure sensor 28, and the inner groove 23 is used to achieve a stable connection between the cavity cover 22 and the mounting box 21.

[0031] Reference Figures 3-5 The contacts 25 are designed in multiple groups and are arranged in a ring around the center of the mounting box 21. A connecting rod 26 is fixedly connected to the end face of the contacts 25. The multiple movable contacts 25 can increase the contact area between the pressure sensor 28 and the fixed plate 12, thereby improving the accuracy of the detection results.

[0032] Specifically, a connecting piece 27 is fixedly connected to the outer wall of the connecting rod 26. The connecting piece 27 is located on the inner bottom wall of the mounting box 21, and the pressure sensor 28 is connected to the connecting piece 27. The connecting rod 26 enables the normal movement of the contact 25. The connecting rod 26 connects the contact 25 to the connecting piece 27, and multiple contacts 25 are connected together through the connecting piece 27 to achieve synchronous movement of multiple contacts 25. The receiving end of the pressure sensor 28 can monitor the pressure from the connecting piece 27 in real time. The connecting piece 27 has a ring-shaped design and is adapted to the inner groove 23, located at the bottom of the inner groove 23.

[0033] Working principle: The screw 11 is passed through the component to be fixed. The fixing plate 12 and the fixing nut 13 are integrated with the screw 11. The mounting box 21 is then passed through the screw 11. The screw ring 24 on the end face of the cavity cover 22 is aligned with the inner groove 23 inside the mounting box 21. The screw ring 24 is rotated to make it threaded into the mounting box 21, ensuring that the screw ring 24 extends into the mounting box 21, thus connecting the mounting box 21 and the cavity cover 22. Finally, the positioning nut 14 is slid along the screw 11 to the outer wall of the cavity cover 22, so that the positioning nut 14 applies a certain pressure to the cavity cover 22. The positioning nut 14 is designed in multiple sets to further ensure the stability of the force applied to the cavity cover 22 and reduce the risk of bolt loosening.

[0034] When the cavity cover 22 is subjected to pressure from the positioning nut 14, it transmits the pressure to the mounting box 21. The mounting box 21 has a movable contact 25 at its bottom, which contacts the fixing plate 12. This allows the contact 25 to drive the connecting plate 27 to move synchronously via the connecting rod 26. The pressure sensor 28 is fixedly installed inside the mounting box 21, and its position does not change. Thus, the pressure of the positioning nut 14 enables the connecting plate 27 to make close contact with the sensing surface of the pressure sensor 28, applying a certain pressure to the pressure sensor 28. The pressure sensor 28 transmits the received pressure to the terminal via an electrical signal, facilitating real-time monitoring by personnel. When the positioning nut 14 becomes loose, the contact pressure between the contact 25 and the sensing surface of the connecting plate 27 and the pressure sensor 28 will change accordingly. Monitoring personnel can then promptly detect the abnormality, inspect and tighten the bolts, and achieve automatic monitoring of bolted connection components.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A loosening detection device suitable for bolted connections, characterized in that: include, The fixing assembly (1) includes a screw (11) and a fixing piece (12) integrally formed on the end face of the screw (11); and, The detection component (2) includes a mounting box (21) disposed on the end face of the fixing plate (12), a contact (25) movably disposed on the lower end face of the mounting box (21), and a pressure sensor (28) fixedly installed inside the mounting box (21); wherein, The contact point (25) is in contact with the fixing piece (12), and the pressure between the two is monitored in real time by the pressure sensor (28) so that personnel can determine the fixing status of the bolt.

2. The loosening detection device for bolted connections as claimed in claim 1, characterized in that The fixing component (1) also includes a fixing nut (13) fixedly connected to the lower end face of the screw (11), and a positioning nut (14) is threadedly connected to the outer wall of the screw (11).

3. The loosening detection device suitable for bolt fixation according to claim 2, characterized in that: The detection component (2) also includes a cavity cover (22) disposed on the outer wall of the mounting box (21), and a screw ring (24) is integrally formed on the lower end face of the cavity cover (22).

4. The loosening detection device for bolt fixing as described in claim 3, characterized in that: The inner wall of the mounting box (21) is provided with an inner groove (23) that is adapted to the screw ring (24), and the screw ring (24) is threaded to the inner wall of the inner groove (23).

5. The loosening detection device suitable for bolt fixation according to claim 4, characterized in that: The contacts (25) are designed in multiple groups and are arranged in a ring around the center of the mounting box (21). The end face of the contacts (25) is fixedly connected to a connecting rod (26).

6. The loosening detection device suitable for bolt fixation according to claim 5, wherein: A connecting piece (27) is fixedly connected to the outer wall of the connecting rod (26). The connecting piece (27) is disposed on the inner bottom wall of the mounting box (21). The pressure sensor (28) is connected to the connecting piece (27).

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