Portable bolt looseness detection device

Abstract

The utility model discloses a portable bolt looseness detection device which comprises a suitcase, a man-machine interaction host, a sound wave emitter, a plurality of sound wave sensors and a transmission line. The suitcase is composed of a storage box body and a box cover, a buffer cushion is arranged at the bottom in the storage box body, damping foam is arranged above the buffer cushion, and the damping foam is provided with a first storage groove, a second storage groove and a plurality of storage groove sets. According to the utility model, key components such as the sound wave sensor, the sound wave emitter, the man-machine interaction host and the like are integrated in one box body, so that the complexity and the operation difficulty of equipment are greatly simplified. The buffer pad is arranged in the box body, key components such as the acoustic sensor, the acoustic transmitter and the man-machine interaction host are limited and fixed, equipment damage caused by external impact or vibration is effectively prevented, the damping effect is fully considered in the damping material and structural design, impact force can be absorbed and dispersed to a certain degree, and the service life of the equipment is prolonged. And equipment is protected from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission tower bolt loosening fault diagnosis, in particular to a portable bolt loosening detection device. Background Art

[0002] Bolt loosening detection is an integral part of mechanical equipment maintenance, and its importance cannot be overstated. In complex and ever-changing industrial environments, mechanical equipment often endures enormous workloads and vibrations. These external factors can easily lead to loosening of bolted connections. If loose bolts are not detected and addressed promptly, they can cause misalignment of equipment components, increased wear, and even the collapse of the entire mechanical system, leading to serious equipment failures and safety accidents, resulting in significant losses to production activities and threatening the lives of operators.

[0003] Therefore, exploring efficient and accurate bolt loosening detection methods is extremely important for ensuring the safe operation of mechanical equipment. As an important technology in the field of modern non-destructive testing, acoustic wave detection technology has been widely used in bolt loosening detection in recent years and has shown significant advantages.

[0004] Acoustic wave detection technology exploits the physical phenomena of sound waves reflecting, refraction, and scattering when they encounter different interfaces or defects in a medium. By measuring and analyzing the changes in these acoustic wave signals, it enables non-contact and rapid detection of the state of bolted joints. For bolt loosening detection, acoustic wave detection technology can capture the tiny vibrations or acoustic emission signals generated by loose bolts, which contain crucial information about the looseness of the bolts. By precisely analyzing and processing these signals, it is possible to accurately determine whether the bolts are loose, as well as the extent and location of the looseness. Compared with traditional detection methods such as visual inspection and percussion listening, acoustic wave detection technology offers higher accuracy and reliability, enabling timely detection of potential bolt loosening issues and effectively preventing equipment failures and safety accidents caused by loose bolts. Furthermore, acoustic wave detection technology offers the advantages of being non-contact, non-destructive, and rapid, enabling detection without disrupting the normal operation of mechanical equipment, thereby improving detection efficiency and convenience. Utility Model Content

[0005] The utility model aims to provide a portable bolt loosening detection device.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a portable bolt loosening detection device includes a suitcase, a human-computer interaction host, an acoustic wave transmitter, a plurality of acoustic wave sensors and a transmission line;

[0007] The suitcase is composed of a storage box body and a box lid. A cushion is provided at the bottom of the storage box body, and shock-absorbing foam is provided above the cushion. The upper end surface of the shock-absorbing foam is provided with a first storage slot for placing a human-computer interaction host, a second storage slot for placing an acoustic wave transmitter, and a plurality of storage slot groups for placing acoustic wave sensors and transmission lines. The plurality of storage slot groups are arranged on both sides of the first storage slot, and each storage slot group includes a third storage slot for placing an acoustic wave sensor and a fourth storage slot for placing a transmission line.

[0008] The inner side of the box cover is provided with a first flexible extrusion block corresponding to the first storage slot, a second flexible extrusion block corresponding to the second storage slot, a third flexible extrusion block corresponding to the third storage slot, and a fourth flexible extrusion block corresponding to the fourth storage slot. When the box cover is in a closed state, the first flexible extrusion block is located in the first storage slot and squeezes the human-computer interaction host, the second flexible extrusion block is located in the second storage slot and squeezes the sound wave transmitter, the third flexible extrusion block is located in the third storage slot and squeezes the sound wave sensor, and the fourth flexible extrusion block is located in the fourth storage slot and squeezes the transmission line;

[0009] The human-computer interaction host includes a display screen and operation buttons, and is equipped with a signal processing module and a data analysis module. The sound wave transmitter can be installed on the iron tower to be tested, and is used to generate and transmit sound waves of a specific frequency. The sound wave sensor can be installed at the bolt to be tested and is connected to the human-computer interaction host through a transmission line, and is used to capture the reflected sound waves generated by the bolt. The signal processing module is used to receive the sound wave signal transmitted by the sound wave sensor and output the signal to the data analysis module. The data analysis module is used to receive the pre-processed sound wave signal transmitted by the signal processing module and output a judgment result.

[0010] As a further optimization of the portable bolt loosening detection device of the utility model: the bases of the first flexible extrusion block, the second flexible extrusion block, the third flexible extrusion block and the fourth flexible extrusion block are all sponges, and the sponges have springs built in, and the axial direction of the springs is perpendicular to the surface of the box cover.

[0011] As a further optimization of the portable bolt loosening detection device of the utility model: the frequency of the transmitted sound waves of the sound wave transmitter is adjustable to meet the detection needs of bolts of different materials and sizes.

[0012] As a further optimization of the portable bolt loosening detection device of the utility model: the acoustic wave sensor is a bone conduction voiceprint sensor.

[0013] As a further optimization of the portable bolt loosening detection device of the utility model: the buffer pad is a shock-absorbing rubber pad.

[0014] As a further optimization of the portable bolt loosening detection device of the utility model: the material of the shock-absorbing foam is EPE, EPS or EPP.

[0015] As a further optimization of the portable bolt loosening detection device of the utility model: finger buckle grooves are further extended on both sides of the first storage slot.

[0016] As a further optimization of the portable bolt loosening detection device of the utility model: the signal processing module includes a filter, a signal amplifier and an analog-to-digital converter.

[0017] The present invention has the following beneficial effects: The present invention integrates key components such as the acoustic wave sensor, acoustic wave transmitter, and human-machine interaction host into one box, greatly simplifying the complexity of the equipment and the difficulty of operation. Operators do not need to carry multiple independent devices, and only need one box to meet all needs, which greatly improves work efficiency and portability. At the same time, a buffer pad is provided in the box to limit and fix key components such as the acoustic wave sensor, acoustic wave transmitter, and human-machine interaction host, effectively preventing damage to the equipment due to external impact or vibration. The shock-absorbing material and structural design fully consider the shock-absorbing effect, and can absorb and disperse the impact force to a certain extent, protecting the equipment from damage and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the suitcase in the bolt loosening detection device;

[0019] Markings in the figure:

[0020] 1. Storage box;

[0021] 2. Box cover;

[0022] 3. Shock-absorbing foam;

[0023] 201, first flexible extrusion block;

[0024] 202, second flexible extrusion block;

[0025] 203, third flexible extrusion block;

[0026] 204, fourth flexible extrusion block;

[0027] 301, first storage slot;

[0028] 302, second storage slot;

[0029] 303, third storage slot;

[0030] 304. The fourth storage slot. DETAILED DESCRIPTION

[0031] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0032] As shown in the figure: A portable bolt loosening detection device includes a suitcase, a human-computer interaction host, an acoustic wave transmitter, multiple acoustic wave sensors and a transmission line.

[0033] The suitcase consists of a storage box 1 and a lid 2. The bottom of the storage box 1 is provided with a cushioning pad, which is a shock-absorbing rubber pad. Shock-absorbing foam 3 is provided above the cushioning pad. The material of the shock-absorbing foam 3 is EPE, EPS, or EPP. The upper end surface of the shock-absorbing foam 3 is provided with a first storage slot 301 for placing the human-computer interaction host, a second storage slot 302 for placing the acoustic wave transmitter, and multiple storage slot groups for placing acoustic wave sensors and transmission lines. The multiple storage slot groups are arranged on both sides of the first storage slot 301. Each storage slot group includes a third storage slot 303 for placing the acoustic wave sensor and a fourth storage slot 304 for placing the transmission line. Finger clip grooves are also extended on both sides of the first storage slot 301 to facilitate the removal of the human-computer interaction host when needed.

[0034] The inner side of the box cover 2 is provided with a first flexible extrusion block 201 corresponding to the first storage slot 301, a second flexible extrusion block 202 corresponding to the second storage slot 302, a third flexible extrusion block 203 corresponding to the third storage slot 303, and a fourth flexible extrusion block 204 corresponding to the fourth storage slot 304. When the box cover 2 is in a closed state, the first flexible extrusion block 201 is located in the first storage slot 301 and squeezes the human-computer interaction host, the second flexible extrusion block 202 is located in the second storage slot 302 and squeezes the sound wave transmitter, the third flexible extrusion block 203 is located in the third storage slot 303 and squeezes the sound wave sensor, and the fourth flexible extrusion block 204 is located in the fourth storage slot 304 and squeezes the transmission line.

[0035] The bases of the first flexible extrusion block 201 , the second flexible extrusion block 202 , the third flexible extrusion block 203 and the fourth flexible extrusion block 204 are all sponges, and the sponges have springs built in them, and the axial direction of the springs is perpendicular to the surface of the box cover 2 .

[0036] The human-computer interaction host and other components (sound wave transmitter, multiple sound wave sensors and transmission lines) are placed in the corresponding storage slots respectively. When the box cover 2 is closed, the flexible extrusion block on the inside of the box cover 2 squeezes the above components, which can be placed in the process of moving or transporting to provide shock absorption protection for the above components.

[0037] The human-computer interaction host includes a display and operation buttons, and is equipped with a signal processing module and a data analysis module. An acoustic wave transmitter, which can be installed on the tower to be inspected, generates and transmits sound waves of a specific frequency. An acoustic wave sensor, which can be installed at the bolt to be tested and connected to the human-computer interaction host via a transmission line, captures the reflected sound waves generated by the bolt. The signal processing module receives the acoustic wave signal from the acoustic wave sensor and outputs it to the data analysis module. The data analysis module receives the pre-processed acoustic wave signal from the signal processing module and outputs the judgment result.

[0038] The acoustic wave transmitter's frequency is adjustable to accommodate bolts of varying materials and sizes. The acoustic wave sensor is a bone conduction voiceprint sensor. The signal processing module includes a filter, a signal amplifier, and an analog-to-digital converter.

[0039] It should be noted that the above-mentioned human-computer interaction host is existing technology, and the built-in signal processing module and data analysis module are also existing technology. There are mature technical solutions in the existing technology for detecting whether the bolts are loose based on voiceprints. The innovation of the present utility model does not lie in the built-in hardware and software content of the human-computer interaction host, and will not be described in detail here.

[0040] The operator starts the device, and the acoustic wave transmitting module begins to emit acoustic waves. When the acoustic wave encounters a bolt, it is reflected, and the reflected acoustic wave is captured by the receiving module. The received acoustic wave signal is then transmitted to the signal processing unit, which analyzes characteristics such as the frequency, amplitude, and phase change of the acoustic wave to determine the degree of looseness of the bolt. The analysis results are then sent to the control unit, which determines whether the bolt needs to be tightened based on the preset looseness threshold. Finally, the test results are displayed to the operator through the user interface and can be output to an external device through the communication interface for recording or further analysis. The flowchart should also include exception handling processes, such as a retry mechanism in the event of signal loss or interference, to ensure the accuracy and reliability of the test results.

[0041] <Bolt loosening detection method>

[0042] S1. Install the acoustic wave sensor at the predetermined monitoring bolt position, ensuring that the contact surface between the sensor and the bolt is flat to obtain accurate acoustic wave data.

[0043] S2. Connect the human-computer interaction host and the acoustic wave sensor through a dedicated cable to realize signal transmission between the acoustic wave sensor and the signal processing module, ensure a stable connection, and avoid interference during signal transmission.

[0044] S3. Start the human-computer interaction host and preheat it to ensure that all components reach a stable working state. Set the detection parameters through the built-in software of the human-computer interaction host and start the detection. The acoustic wave transmitter will emit sound waves of a specific frequency. The acoustic wave sensor will receive the acoustic wave signal generated by the loose bolt and transmit the signal to the signal processing module.

[0045] S4. The signal processing module performs noise reduction processing on the received sound wave signal and transmits it to the data analysis module. The data analysis module analyzes the processed signal, identifies abnormal signal data, determines whether the bolt is loose, generates a test report and displays it on the screen of the human-computer interaction host.

[0046] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A portable bolt loosening detection device, characterized by: It includes a suitcase, a human-computer interaction host, an acoustic wave transmitter, multiple acoustic wave sensors and a transmission line; The suitcase is composed of a storage box body (1) and a box cover (2); a buffer pad is provided at the bottom of the storage box body (1); a shock-absorbing foam (3) is provided above the buffer pad; an upper end surface of the shock-absorbing foam (3) is provided with a first storage slot (301) for placing a human-computer interaction host, a second storage slot (302) for placing an acoustic wave transmitter, and a plurality of storage slot groups for placing acoustic wave sensors and transmission lines; the plurality of storage slot groups are arranged on both sides of the first storage slot (301); each storage slot group includes a third storage slot (303) for placing an acoustic wave sensor and a fourth storage slot (304) for placing a transmission line; The inner side of the box cover (2) is provided with a first flexible extrusion block (201) corresponding to the first storage slot (301), a second flexible extrusion block (202) corresponding to the second storage slot (302), a third flexible extrusion block (203) corresponding to the third storage slot (303), and a fourth flexible extrusion block (204) corresponding to the fourth storage slot (304); when the box cover (2) is in a closed state, the first flexible extrusion block (201) is located in the first storage slot (301) and squeezes the human-computer interaction host, the second flexible extrusion block (202) is located in the second storage slot (302) and squeezes the sound wave transmitter, the third flexible extrusion block (203) is located in the third storage slot (303) and squeezes the sound wave sensor, and the fourth flexible extrusion block (204) is located in the fourth storage slot (304) and squeezes the transmission line; The human-computer interaction host includes a display screen and operation buttons, and is equipped with a signal processing module and a data analysis module. The sound wave transmitter can be installed on the iron tower to be tested, and is used to generate and transmit sound waves of a specific frequency. The sound wave sensor can be installed at the bolt to be tested and is connected to the human-computer interaction host through a transmission line, and is used to capture the reflected sound waves generated by the bolt. The signal processing module is used to receive the sound wave signal transmitted by the sound wave sensor and output the signal to the data analysis module. The data analysis module is used to receive the pre-processed sound wave signal transmitted by the signal processing module and output a judgment result.

2. The portable bolt loosening detection device according to claim 1, characterized in that: The bases of the first flexible extrusion block (201), the second flexible extrusion block (202), the third flexible extrusion block (203) and the fourth flexible extrusion block (204) are all sponges, and the sponges have springs built into them, with the axial direction of the springs being perpendicular to the surface of the box cover (2).

3. The portable bolt loosening detection device according to claim 1, characterized in that: The frequency of the sound waves emitted by the sound wave transmitter is adjustable to meet the needs of detecting bolts of different materials and sizes.

4. The portable bolt loosening detection device according to claim 1, characterized in that: The acoustic wave sensor is a bone conduction voiceprint sensor.

5. The portable bolt loosening detection device according to claim 1, characterized in that: The buffer pad is a shock-absorbing rubber pad.

6. The portable bolt loosening detection device according to claim 1, characterized in that: The material of the shock-absorbing foam (3) is EPE, EPS or EPP.

7. The portable bolt loosening detection device according to claim 1, characterized in that: Finger buckle grooves are also extended on both sides of the first storage groove (301).

8. The portable bolt loosening detection device according to claim 1, characterized in that: The signal processing module includes a filter, a signal amplifier and an analog-to-digital converter.

Images