An audio acquisition device for fault detection

Abstract

The present disclosure provides an audio acquisition device for fault detection, comprising: a holding rod; an acquisition rod, the acquisition rod being of a telescopic structure, two ends of the acquisition rod in the telescopic direction being an acquisition end and a first connecting end respectively, the first connecting end being connected to the holding rod; a sound sensor, disposed at the acquisition end; a counterweight, movably sleeved on the holding rod, the position of the counterweight in the axial direction of the holding rod being adjustable.

Description

Technical Field

[0001] This disclosure relates to the field of fault detection technology, and in particular to an audio acquisition device for fault detection. Background Technology

[0002] Acoustic-based fault detection systems can process and analyze audio information generated during the operation of the equipment or component to be tested, and determine whether the corresponding equipment or component has a fault based on the processing results. In order to obtain the aforementioned audio information, operators usually need to place a test rod equipped with a sound sensor against the surface of the equipment or component to be tested, so as to collect the aforementioned audio information using the sound sensor.

[0003] However, in practical applications, it has been found that when operators place the probe against the surface of some operating equipment or components, the probe vibrates significantly, making it difficult for the probe to maintain a stable contact with the surface of the aforementioned equipment or components. This results in poor audio signal acquisition and is not conducive to fault detection. Utility Model Content

[0004] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] In view of this, an audio acquisition device for fault detection is proposed according to an embodiment of this disclosure, comprising:

[0006] Grip the stick;

[0007] The sampling rod is a telescopic structure. The two ends of the sampling rod in the telescopic direction are the sampling end and the first connecting end, respectively. The first connecting end is connected to the holding rod.

[0008] A sound sensor is located at the data acquisition end;

[0009] The counterweight is movably fitted onto the grip rod, and its position along the axial direction of the grip rod is adjustable.

[0010] In one feasible implementation, the first connecting end is hinged to the gripping rod so that the angle between the extension / retraction direction of the sampling rod and the axis of the gripping rod is adjustable.

[0011] In one feasible implementation, the aforementioned audio acquisition device further includes:

[0012] A ball joint is located at one end of the grip lever along its axial direction, and the first connecting end is hinged to the grip lever via the ball joint.

[0013] In one feasible implementation, the ball joint includes:

[0014] The ball head is located at one end of the grip rod along the axial direction, and the ball head has a mating groove.

[0015] The ball head has a second connecting end and a ball head end at its two axial ends, which are connected to the first connecting end and rotatably disposed in the mating groove.

[0016] A damping layer is disposed between the groove wall of the mating groove and the ball end.

[0017] In one feasible implementation, the aforementioned audio acquisition device further includes:

[0018] The connecting nut has a first external thread on the outer peripheral wall of the sampling rod and a second external thread on the outer peripheral wall of the ball head rod. Both the sampling rod and the ball head rod are threadedly connected to the connecting nut.

[0019] A spring is fitted onto the ball joint rod, with one end of the spring abutting against the connecting nut and the other end abutting against the ball joint end.

[0020] In one feasible implementation, the aforementioned audio acquisition device further includes:

[0021] A damping pad is fitted onto the grip bar, and the damping pad is located between the counterweight and the ball joint.

[0022] In one feasible implementation, the aforementioned audio acquisition device further includes:

[0023] The flange is fitted onto the gripping rod and is located between the damping pad and the ball joint.

[0024] In one feasible implementation, the outer peripheral wall of the gripping rod is formed with a third external thread, the inner peripheral wall of the counterweight is formed with an internal thread, the counterweight is threadedly connected to the gripping rod, and the length of the third external thread in the axial direction of the gripping rod is greater than the axial length of the counterweight.

[0025] In one feasible implementation, the sampling rod includes:

[0026] The sleeve has one axial end configured as a first connecting end and the other axial end of the sleeve has a receiving hole that extends along the axial direction of the sleeve.

[0027] The slide rod has one axial end configured as the acquisition end, and the other axial end of the slide rod is set in the receiving hole. The slide rod and the sleeve are arranged coaxially.

[0028] A locking element is provided on the sleeve, and the locking element has a locked state and an unlocked state;

[0029] In the locked state, the locking element restricts the movement of the slide bar relative to the sleeve; in the unlocked state, the slide bar is adapted to slide along the axial direction of the sleeve.

[0030] In one feasible implementation, both the sleeve and the slide rod are made of carbon fiber material.

[0031] The above description is merely an overview of the technical solution provided in this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other features and effects of this disclosure more obvious and understandable, the following are specific examples of the implementation methods of this disclosure. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 A schematic structural diagram of an audio acquisition device according to an embodiment of this disclosure, viewed from a first perspective;

[0034] Figure 2 A schematic structural diagram of an audio acquisition device according to an embodiment of this disclosure from a second perspective;

[0035] Figure 3 A schematic structural diagram of an audio acquisition device according to an embodiment of this disclosure from a third perspective;

[0036] Figure 4 This is a schematic application scenario diagram of an audio acquisition device according to an embodiment of the present disclosure;

[0037] Figure 5 for Figure 4 A schematic enlarged view of a portion of region A in the middle;

[0038] Figure 6 for Figure 4 The diagram shows a schematic cross-sectional view of the audio acquisition device along the BB direction.

[0039] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0040] 11. Grip rod; 12. Data collection rod; 13. Flywheel; 14. Ball joint; 15. Connecting nut; 16. Spring; 17. Counterweight; 18. Damping pad; 19. Flange;

[0041] 121 Sleeve; 122 Slide rod; 123 Locking element; 123a Support; 123b Connecting shaft; 123c Eccentric wheel; 123d Handle; 123e Pressure block;

[0042] 141 ball head seat; 142 ball head club;

[0043] 1201 Acquisition end; 1202 Receiving hole; 1401 Ball end; 1501 First strip groove; 1901 Second strip groove. Detailed Implementation

[0044] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0045] like Figures 1 to 6 As shown, according to an embodiment of this disclosure, an audio acquisition device for fault detection is proposed, comprising: a gripping rod 11; a acquisition rod 12, the acquisition rod 12 being a telescopic structure, with its two ends in the telescopic direction being an acquisition end 1201 and a first connecting end, the first connecting end being connected to the gripping rod 11; a sound sensor disposed on the acquisition end 1201; and a counterweight 17 movably sleeved on the gripping rod 11, the position of the counterweight 17 in the axial direction of the gripping rod 11 being adjustable.

[0046] The audio acquisition device for fault detection disclosed herein includes the aforementioned grip rod 11, acquisition rod 12, sound sensor, and counterweight 17. The first connecting end of the acquisition rod 12 is connected to the grip rod 11. The sound sensor is located at the acquisition end 1201 of the acquisition rod 12. In practical applications, the grip can be held by the operator for easy operation of the audio acquisition device. The acquisition end 1201 can be used to abut against the surface of the object to be tested, allowing the sound sensor to approach the object and acquire audio information from the object during operation. The sound sensor can be signal-connected to an acoustic fault detection system and used to transmit the acquired audio information to the acoustic fault detection system for analysis. The fault detection system analyzes the fault condition of the object under test. A counterweight 17 is mounted on the gripping rod 11 and is movable relative to the gripping rod 11, allowing the axial position of the counterweight 17 on the gripping rod 11 to be adjustable. In practical applications, if the audio acquisition device vibrates strongly under the excitation of the object under test when the acquisition end 1201 touches the surface of the object, the operator can adjust the axial position of the counterweight 17 on the gripping rod 11 to change the natural frequency of the audio acquisition device, thereby reducing the likelihood of resonance under the excitation of the object. This reduces the vibration of the aforementioned audio acquisition device when the acquisition end 1201 touches the surface of the object to be tested, thus facilitating stable contact between the acquisition end 1201 and the surface of the object and ensuring the audio signal acquisition effect. The acquisition rod 12 is a telescopic structure, with the aforementioned first connecting end and the aforementioned acquisition end 1201 being the two ends in the telescopic direction of the acquisition rod 12. Therefore, on the one hand, if the aforementioned audio acquisition device experiences relatively strong vibration under the excitation of the object when the acquisition end 1201 touches the surface of the object to be tested, the operator can also change the aforementioned vibration by telescopically adjusting the acquisition rod 12. The inherent frequency of the audio acquisition device is used to reduce the probability of resonance of the aforementioned audio acquisition device under the excitation of the object to be tested. On the other hand, the operator can extend the acquisition rod 12 to increase the distance between his / her hand and the acquisition end 1201, thereby making it easier for the acquisition end 1201 to contact the object to be tested with a large distance between it and the operator's hand. Alternatively, the operator can shorten the acquisition rod 12 to reduce the distance between his / her hand and the acquisition end 1201, thereby reducing the overhang length of the acquisition rod 12. This makes it easier for the operator to hold the aforementioned audio acquisition device with less effort and reduces the physical exertion of the operator during the audio signal acquisition process.

[0047] It is understandable that in some cases, when the aforementioned acquisition end 1201 comes into contact with the surface of the object to be tested in operation, the object to be tested will generate mechanical vibration during operation, which will generate vibration excitation to the aforementioned audio acquisition device. If the frequency of the aforementioned vibration excitation is close to the natural frequency of the aforementioned audio acquisition device, it will cause the aforementioned audio acquisition device to resonate, resulting in a large amplitude vibration of the aforementioned audio acquisition device. This makes it difficult for the operator to stably press the aforementioned acquisition end 1201 against the surface of the aforementioned object to be tested. Furthermore, since the natural frequency of an object is related to its mass distribution, changing the structural shape of an object with a fixed mass can cause a change in the natural frequency of the object. Based on this, the aforementioned audio acquisition device provided in this disclosure, based on the aforementioned settings, allows the operator to easily change the mass distribution of the aforementioned audio acquisition device by adjusting the position of the aforementioned counterweight 17 and / or the extension and retraction amplitude of the aforementioned acquisition rod 12, thereby changing the natural frequency of the aforementioned audio acquisition device. This allows the natural frequency of the aforementioned audio acquisition device to avoid the aforementioned excitation frequency, preventing the aforementioned audio acquisition device from vibrating strongly under the excitation of the object to be tested. This is beneficial for the acquisition end 1201 to maintain stable contact with the surface of the object to be tested, ensuring the acquisition effect of the audio signal.

[0048] It is understandable that the aforementioned counterweight 17 is also beneficial for balancing the dynamic torque of the aforementioned audio acquisition device during use, thereby enhancing the stability of the aforementioned audio acquisition device.

[0049] It is understood that the aforementioned objects to be tested may be, but are not limited to, mechanical equipment or parts of mechanical equipment, such as, but not limited to, bearings, pipes, motors, etc.

[0050] It should be noted that, Figures 1 to 6 The aforementioned sound sensor is not shown in the figure. It can be understood that the aforementioned sound sensor may be embedded in the aforementioned acquisition end 1201 or fixedly disposed on the surface of the aforementioned acquisition end 1201.

[0051] It is understood that the aforementioned counterweight 17 can be made of a high-density material, such as a metal. This allows for a greater proportion of the counterweight 17's mass in the overall mass of the audio acquisition device, given the limited volume of the counterweight 17. This facilitates a significant change in the mass distribution of the audio acquisition device even with small positional changes in the counterweight 17, thereby shortening the range of movement of the counterweight 17 on the grip rod 11 and improving the structural compactness of the audio acquisition device. For example, the aforementioned counterweight 17 can be made of a tungsten-nickel-iron alloy.

[0052] It is understood that the aforementioned gripping rod 11 can be in the shape of a round rod to facilitate hand gripping by the operator. The gripping rod 11 may include a gripping section and a counterweight section arranged coaxially, wherein the gripping section is for the operator to grip, and the counterweight 17 is movably disposed on the counterweight section. For example, considering the structural strength and service life of the aforementioned gripping rod 11, the aforementioned gripping rod 11 may be made of tungsten-nickel-iron alloy; or, considering the overall lightweight design of the aforementioned audio acquisition device, the aforementioned gripping rod 11 may be made of aluminum alloy. For example, the ratio of the axial length of the aforementioned counterweight section to the overall axial length of the aforementioned gripping rod 11 is greater than or equal to 0.6, thereby ensuring the range of motion of the counterweight 17 on the gripping rod 11, which is beneficial for expanding the frequency avoidance range of the aforementioned audio acquisition device.

[0053] like Figure 3 and Figure 4 As shown, in some examples, the first connecting end is hinged to the gripping rod 11 so that the angle between the extension and retraction direction of the collection rod 12 and the axis of the gripping rod 11 is adjustable.

[0054] In this technical solution, the aforementioned first connecting end can be hinged to the gripping rod 11, so that the angle between the extension and retraction direction of the acquisition rod 12 and the axis of the gripping rod 11 is adjustable. Based on the aforementioned setting, the structural flexibility of the aforementioned audio acquisition can be further improved. On the one hand, it can expand the inherent frequency adjustment range of the aforementioned audio acquisition device, which is conducive to the aforementioned audio acquisition device to perform frequency avoidance over a wider range, and further reduce the probability of the aforementioned audio acquisition device resonating under the excitation of the object to be tested. On the other hand, it can also facilitate the operator to adjust the posture of the audio sensor relative to their hand by changing the angle between the extension and retraction direction of the acquisition rod 12 and the axis of the gripping rod 11. Based on this, in conjunction with the extension and retraction capability of the acquisition rod 12, the flexible adjustment of the posture of the aforementioned audio sensor relative to the operator's hand and the flexible transformation of the structural posture of the aforementioned audio acquisition device can be realized. This makes it easier for the operator to adapt to the fault detection operation of the object to be tested in different positions or spatial environments by adjusting the structural posture of the aforementioned audio sensor, which is conducive to improving the ease of use of the aforementioned audio acquisition device.

[0055] It is understood that the angle between the extension / retraction direction of the aforementioned sampling rod 12 and the axial direction of the gripping rod 11 can be greater than or equal to 0° and less than or equal to 90°. For example, the angle between the extension / retraction direction of the aforementioned sampling rod 12 and the axial direction of the gripping rod 11 can be greater than or equal to 0° and less than or equal to 45°.

[0056] like Figure 1 , Figures 3 to 5As shown, in some examples, the aforementioned audio acquisition device further includes: a ball joint 14, disposed at one end of the grip rod 11 in the axial direction, and the first connecting end is hinged to the grip rod 11 through the ball joint 14.

[0057] In this technical solution, the aforementioned audio acquisition device may further include the aforementioned ball joint 14. Based on the aforementioned configuration, the first connecting end can be hinged to the end of the gripping rod 11 via the ball joint 14, thereby allowing the acquisition rod 12 to deflect in multiple dimensions relative to the gripping rod 11, which can expand the adjustment range of the angle between the extension and retraction direction of the acquisition rod 12 and the axis of the gripping rod 11.

[0058] like Figure 1 , Figures 3 to 5 As shown, in some examples, the ball joint 14 includes: a ball head seat 141, disposed at one axial end of the gripping rod 11, the ball head seat 141 having a mating groove; a ball head rod 142, the two axial ends of the ball head rod 142 being a second connecting end and a ball head end 1401, the second connecting end being connected to the first connecting end, and the ball head end 1401 being rotatably disposed in the mating groove; and a damping layer disposed between the groove wall of the mating groove and the ball head end 1401.

[0059] In this technical solution, the ball joint 14 may include the aforementioned ball head seat 141, ball head rod 142, and damping layer. Based on the aforementioned configuration, the ball joint 14 can adjust the angle between the extension / retraction direction of the acquisition rod 12 and the axis of the grip rod 11 by rotating the ball head rod 142 relative to the ball head seat 141. Furthermore, the damping layer increases the relative motion resistance between the ball head end 1401 and the groove wall of the mating groove, facilitating the stabilization of the angle and ensuring that the acquisition rod 12 remains stably at the corresponding angle after deflection. This improves the posture stability of the audio acquisition device during the acquisition process. The damping layer also reduces vibration transmission at the rotational joint of the ball joint 14, enhancing the vibration resistance of the audio acquisition device.

[0060] It is understood that the aforementioned damping layer can be a damping grease layer, thereby further lubricating the rotating joint of the ball joint 14, which is beneficial to extending the service life of the ball joint 14.

[0061] It is understood that the aforementioned ball head seat 141 may be provided with a damping grease filling port, which is connected to the fitting gap between the aforementioned ball head end 1401 and the groove wall of the aforementioned mating groove. Accordingly, the aforementioned damping layer can be formed by adding damping grease to the aforementioned damping grease filling port.

[0062] It is understood that the aforementioned ball end 1401 has a spherical structure, and the diameter of the aforementioned spherical structure is larger than the diameter of the aforementioned second connecting end; the shape of the aforementioned mating groove can be a spherical notch groove adapted to the aforementioned ball end 1401, and the groove wall of the aforementioned mating groove and the aforementioned ball end 1401 can be a transition fit relationship or a clearance fit relationship.

[0063] For example, the aforementioned ball joint 142 can be made of GCr15 bearing steel, the surface of the ball end 1401 is nitrided, and the surface roughness can be Ra0.4μm; the aforementioned ball seat can be made of PA66+30% glass fiber composite material, and the groove wall of the aforementioned mating groove can be provided with an annular groove for filling the aforementioned damping layer; based on this, the service life of the ball joint 14 can be extended, and the durability of the ball joint 14 can be guaranteed.

[0064] like Figures 1 to 5 As shown, in some examples, the aforementioned audio acquisition device further includes: a connecting nut 15, the outer peripheral wall of the acquisition rod 12 having a first external thread, the outer peripheral wall of the ball head rod 142 having a second external thread, and both the acquisition rod 12 and the ball head rod 142 being threadedly connected to the connecting nut 15; and a spring 16, sleeved on the ball head rod 142, one end of the spring 16 abutting against the connecting nut 15, and the other end abutting against the ball head end 1401.

[0065] In this technical solution, the aforementioned audio acquisition device may further include the aforementioned connecting nut 15 and spring 16. Based on the aforementioned configuration, the ball joint 14 can be detachably connected to the acquisition rod 12 via the aforementioned connecting nut 15, thereby improving the ease of disassembly and assembly of the acquisition rod 12, facilitating maintenance and replacement of the acquisition rod 12. Furthermore, the threaded connection between the ball joint 14 and the acquisition rod 12 ensures the reliability of the connection when the acquisition rod 12 is installed in the ball joint 14, reducing the risk of the acquisition rod 12 becoming loose. The spring 16 can weaken the vibration transmission between the connecting nut 15 and the ball end 1401, which is beneficial to further enhance the vibration stability of the aforementioned audio acquisition device, providing a guarantee for the stable and reliable acquisition by the acquisition end 1201, and reducing the hand vibration felt by the operator during use, thus improving the user experience of the aforementioned audio acquisition device.

[0066] It is understood that both the aforementioned first external thread and the aforementioned second external thread are compatible with the aforementioned connecting nut 15.

[0067] It is understandable that in practical applications, the aforementioned spring 16 can be arranged in a compressed state between the aforementioned connecting nut 15 and the aforementioned ball head seat 141, and the compression of the spring 16 is less than the maximum compression of the spring 16, that is, to ensure that the spring 16 is in a compressed but not fully compressed state, thereby improving the vibration absorption and vibration isolation effect of the spring 16.

[0068] For example, the aforementioned spring 16 may be a left-handed spring 16, and the aforementioned spring 16 may be made of austenitic stainless steel; based on this, the structural strength and vibration absorption performance of the spring 16 can be enhanced, and the torsional resistance of the aforementioned audio acquisition device can be enhanced.

[0069] For example, the outer peripheral wall of the connecting nut 15 may be provided with a plurality of first strip grooves 1501, which are evenly arranged along the outer peripheral wall of the connecting nut 15. Based on this, on the one hand, if the connecting nut 15 is affected by temperature difference and undergoes expansion and contraction deformation, the aforementioned first strip grooves 1501 can be used to compensate for the aforementioned expansion and contraction deformation, thereby avoiding large deformation of the connecting nut 15 under temperature difference stress, reducing the risk of connection failure between the connecting nut 15 and the ball head rod 142 and the acquisition rod 12, and further improving the structural reliability and weather resistance of the aforementioned audio acquisition device. On the other hand, the aforementioned second strip groove 1901 also helps to increase the surface friction of the connecting nut 15, thereby making it easier for operators to tighten the aforementioned connecting nut 15.

[0070] like Figure 1 , Figure 3 and Figure 4 As shown, in some examples, the aforementioned audio acquisition device further includes a damping pad 18, which is fitted onto the grip rod 11 and is located between the counterweight 17 and the ball joint 14.

[0071] In this technical solution, the aforementioned audio acquisition device may further include the aforementioned damping pad 18. Based on the aforementioned configuration, the aforementioned audio acquisition device can utilize the damping pad 18 to absorb vibration energy, thereby weakening the vibration transmission between the ball joint 14 and the damping block. This is beneficial for further improving the vibration reduction capability of the aforementioned audio acquisition device, enhancing the vibration stability of the aforementioned audio acquisition device, providing a guarantee for the stable and reliable acquisition by the acquisition end 1201, reducing the hand vibration felt by the operator during use, reducing the vibration noise generated by the aforementioned audio acquisition device during use, improving the user experience of the aforementioned audio acquisition device, and providing further assurance for the audio information acquisition effect.

[0072] For example, the aforementioned damping pad 18 can be made of thermoplastic polyurethane material; based on this, the thermal stability of the damping pad 18 can be improved, which is beneficial for the use of the aforementioned audio acquisition device in high-temperature environments and can improve the weather resistance of the aforementioned audio acquisition device.

[0073] like Figures 1 to 4 As shown, in some examples, the aforementioned audio acquisition device further includes a flange 19, which is fitted onto the grip rod 11 and is located between the damping pad 18 and the ball joint 14.

[0074] In this technical solution, the aforementioned audio acquisition device may further include the aforementioned flange 19. Based on the aforementioned configuration, the aforementioned audio acquisition device can utilize the flange 19 to provide structural support for the ball joint 14, thereby improving the structural stability of the ball joint 14, the acquisition rod 12, and the sound sensor, and enhancing the overall structural reliability of the aforementioned audio acquisition device.

[0075] For example, the aforementioned flange 19 can be made of aluminum alloy, which helps to ensure the lightweight level of the aforementioned audio acquisition device.

[0076] For example, the aforementioned flange 19 may also have multiple mounting positions, which can be used to install auxiliary devices such as temperature sensors and laser positioners. It is understood that the aforementioned mounting positions may be, but are not limited to, mounting holes or mounting slots.

[0077] For example, the aforementioned ball head seat 141 is screwed to the aforementioned flange 19.

[0078] For example, the outer peripheral wall of the aforementioned flange 19 may be provided with a plurality of second strip grooves 1901, which are evenly arranged along the circumference of the flange 19. Based on this, if the flange 19 is affected by temperature difference and undergoes expansion and contraction deformation, the aforementioned second strip grooves 1901 can be used to compensate for the aforementioned expansion and contraction deformation, thereby avoiding the flange 19 from warping under temperature difference stress, reducing the risk of connection failure between the flange 19 and the ball head seat 141, and further improving the structural reliability and weather resistance of the aforementioned audio acquisition device.

[0079] In some examples, the outer peripheral wall of the gripping rod 11 is formed with a third external thread, the inner peripheral wall of the counterweight 17 is formed with an internal thread, the counterweight 17 is threaded to the gripping rod 11, and the length of the third external thread in the axial direction of the gripping rod 11 is greater than the axial length of the counterweight 17.

[0080] In this technical solution, the aforementioned counterweight 17 and the aforementioned gripping rod 11 can be connected by threads. The length of the third external thread in the axial direction of the gripping rod 11 can be set to be greater than the axial length of the counterweight 17. Thus, during use, the operator can adjust the position of the counterweight 17 in the axial direction of the gripping rod 11 by turning the counterweight 17. After the position is adjusted, based on the thread friction between the counterweight 17 and the gripping rod 11, the position of the counterweight 17 in the axial direction of the gripping rod 11 can remain stable, reducing the risk of the counterweight 17 loosening after adjustment and helping to ensure the frequency avoidance effect.

[0081] For example, the aforementioned third external thread and the aforementioned internal thread of the counterweight 17 can be self-locking threads.

[0082] like Figure 1 , Figures 3 to 6 As shown, in some examples, the sampling rod 12 includes: a sleeve 121, one axial end of which is configured as a first connecting end, and the other axial end of the sleeve 121 having a receiving hole 1202 extending along the axial direction of the sleeve 121; a slide rod 122, one axial end of which is configured as a sampling end 1201, and the other axial end of the slide rod 122 is disposed within the receiving hole 1202, and the slide rod 122 is coaxially arranged with the sleeve 121; and a locking member 123 disposed on the sleeve 121, having a locked state and an unlocked state; wherein, in the locked state, the locking member 123 restricts the movement of the slide rod 122 relative to the sleeve 121; and in the unlocked state, the slide rod 122 is adapted to slide along the axial direction of the sleeve 121.

[0083] In this technical solution, the sampling rod 12 may include the aforementioned sleeve 121, slide bar 122, and locking member 123. Based on the aforementioned configuration, the sampling rod 12 can achieve length changes in the telescopic direction by sliding the slide bar 122 along the receiving hole 1202 of the sleeve 121. During use, when the sampling rod 12 is adjusted to the required length, the operator can switch the aforementioned locking member 123 from the aforementioned unlocked state to the aforementioned locked state to limit the sliding freedom of the slide bar 122, thereby improving the positional stability of the aforementioned sampling end 1201 and facilitating the stable contact of the sampling end 1201 against the surface of the object to be measured.

[0084] For example, such as Figure 6As shown, the aforementioned locking component 123 may include a support 123a, a connecting shaft 123b, an eccentric wheel 123c, a handle 123d, and a pressure block 123e; wherein, the support 123a is sleeved on the aforementioned sleeve 121, the connecting shaft 123b is fixedly mounted on the support 123a and arranged parallel to the sleeve 121, the eccentric wheel 123c is rotatably sleeved on the sleeve 121, and there is a misalignment between the axis of the eccentric wheel 123c and the axis of the sleeve 121, a first arc-shaped groove is formed on the circumference of the slide rod 122, and the inner circumferential wall of the sleeve 121... An arc-shaped protrusion adapted to the aforementioned arc-shaped groove is formed. A second arc-shaped groove corresponding to the aforementioned arc-shaped protrusion is formed on the outer peripheral wall of the sleeve 121. The first arc-shaped groove, the second arc-shaped groove, and the arc-shaped protrusion are coaxial. One side of the aforementioned pressure block 123e faces the aforementioned connecting shaft 123b, and the other side forms an arc-shaped convex surface, which is embedded in the aforementioned second arc-shaped groove. Based on this, when the eccentric wheel 123c rotates around the aforementioned connecting shaft 123b, the minimum distance between the pressure block 123e and the eccentric wheel 123c can change, and the eccentric wheel 123c... The device has a pressing position and a relaxing position in the rotational direction. In the pressing position, the eccentric wheel 123c abuts against the pressure block 123e on the side facing the connecting shaft 123b, thereby applying pressure to the pressure block 123e in the direction close to the sleeve 121. This pressure can be further transmitted from the sleeve 121 to the slide rod 122, increasing the friction between the sleeve 121 and the slide rod 122, thus locking the slide rod 122 into the sleeve 121 and restricting its sliding. In the relaxing position… The eccentric wheel 123c separates from the aforementioned pressure block 123e, thereby reducing the friction between the sleeve 121 and the slide rod 122, making the slide rod 122 suitable for sliding along the sleeve 121; the handle 123d is provided on the periphery of the eccentric wheel 123c, so that the operator can rotate the eccentric wheel 123c by means of the handle 123d; the aforementioned support 123a has an elastic buckle, and when the aforementioned eccentric wheel 123c rotates to the aforementioned pressing position, the handle 123d can be engaged with the aforementioned elastic buckle to limit the rotation of the eccentric wheel 123c.

[0085] It is understood that the aforementioned sleeve 121 can be a thin-walled component to allow for slight deformation under the pressure of the aforementioned pressure block 123e, thereby pressing the aforementioned slide rod 122; for example, the wall thickness of the aforementioned sleeve 121 can be, but is not limited to, 1.2 mm, 1.5 mm, or 2 mm. Accordingly, the aforementioned eccentric wheel 123c and pressure block 123e can be made of hard materials to ensure contact pressure; for example, the aforementioned eccentric wheel 123c and pressure block 123e can both be made of 20CrMnTi, and the quenching hardness can be greater than or equal to HRC58 and less than or equal to HRC62.

[0086] For example, the aforementioned handle 123d may be made of nylon 66 material.

[0087] For example, the aforementioned slide bar 122 may be provided with scale lines so that operators can more intuitively determine the current length of the sampling rod 12 during use.

[0088] In some examples, both sleeve 121 and slide bar 122 are made of carbon fiber material.

[0089] In this technical solution, both the sleeve 121 and the slide bar 122 can be made of carbon fiber material, which can improve the weather resistance and corrosion resistance of the acquisition rod 12, which is conducive to the aforementioned audio acquisition components adapting to harsh operating environments, and can improve the lightweight level and vibration stability of the acquisition rod 12 while ensuring the structural strength of the acquisition rod 12.

[0090] like Figures 1 to 4 As shown, in some feasible examples, the aforementioned audio acquisition device may also include a flywheel 13, which is disposed at the end of the aforementioned grip rod 11 away from the aforementioned ball head support. It is understood that the flywheel 13 can be used to store and release kinetic energy. In practical applications, the flywheel 13 can be made to store energy before the aforementioned acquisition end 1201 contacts the object to be tested. Thus, when the acquisition end 1201 touches the object to be tested, if the object to be collected exerts a strong excitation effect on the aforementioned audio acquisition device, the aforementioned flywheel 13 can release the stored kinetic energy so that the aforementioned audio acquisition device can resist the aforementioned excitation and reduce the risk of the aforementioned audio acquisition device undergoing large-scale deformation or vibration.

[0091] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0092] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0093] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An audio acquisition device for fault detection, characterized in that, include: Grip the stick; A collection rod, wherein the collection rod is a telescopic structure, and the two ends of the collection rod in the telescopic direction are a collection end and a first connecting end, respectively, and the first connecting end is connected to the gripping rod; A sound sensor is installed at the acquisition end; A counterweight is movably fitted onto the gripping rod, and the position of the counterweight along the axial direction of the gripping rod is adjustable.

2. The audio acquisition device for fault detection according to claim 1, characterized in that, The first connecting end is hinged to the gripping rod so that the angle between the extension and retraction direction of the collection rod and the axial direction of the gripping rod is adjustable.

3. The audio acquisition device for fault detection according to claim 2, characterized in that, Also includes: A ball joint is located at one end of the grip rod along its axial direction, and the first connecting end is hinged to the grip rod via the ball joint.

4. The audio acquisition device for fault detection according to claim 3, characterized in that, The ball joint includes: A ball head seat is located at one end of the grip rod along its axial direction, and the ball head seat has a mating groove. A ball joint rod, wherein the two ends of the ball joint rod in the axial direction are a second connecting end and a ball end, the second connecting end is connected to the first connecting end, and the ball end is rotatably disposed in the mating groove; A damping layer is disposed between the groove wall of the mating groove and the ball end.

5. The audio acquisition device for fault detection according to claim 4, characterized in that, Also includes: The connecting nut is provided. The outer peripheral wall of the collecting rod has a first external thread, and the outer peripheral wall of the ball head rod has a second external thread. Both the collecting rod and the ball head rod are threadedly connected to the connecting nut. A spring is fitted onto the ball joint rod, with one end of the spring abutting against the connecting nut and the other end abutting against the ball joint end.

6. The audio acquisition device for fault detection according to claim 3, characterized in that, Also includes: A damping pad is fitted onto the grip rod, and the damping pad is located between the counterweight and the ball joint.

7. The audio acquisition device for fault detection according to claim 6, characterized in that, Also includes: A flange is fitted onto the gripping rod, and the flange is located between the damping pad and the ball joint.

8. The audio acquisition device for fault detection according to any one of claims 1 to 7, characterized in that, The outer peripheral wall of the gripping rod has a third external thread, and the inner peripheral wall of the counterweight has an internal thread. The counterweight is threadedly connected to the gripping rod, and the length of the third external thread in the axial direction of the gripping rod is greater than the axial length of the counterweight.

9. The audio acquisition device for fault detection according to any one of claims 1 to 7, characterized in that, The collection rod includes: A sleeve, one axial end of which is configured as the first connecting end, and the other axial end of which is provided with a receiving hole that extends along the axial direction of the sleeve. A sliding rod, one axial end of which is configured as the acquisition end, is disposed within the receiving hole, and the sliding rod is coaxially arranged with the sleeve; A locking element is disposed on the sleeve, and the locking element has a locked state and an unlocked state; In the locked state, the locking member restricts the movement of the slide bar relative to the sleeve; in the unlocked state, the slide bar is adapted to slide along the axial direction of the sleeve.

10. The audio acquisition device for fault detection according to claim 9, characterized in that, Both the sleeve and the slide rod are made of carbon fiber material.

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