Mine equipment vibration monitoring device

Abstract

A mine equipment vibration monitoring device comprises a vibration coupling body, a hose, a hydrophone and a signal processing system. One end of the vibration coupling body has a coupling surface, and the other end has a conduction column; sound conducting liquid is filled in the hose, one end of the hose is sleeved on the conducting column, the other end of the hose is sleeved on the hydrophone, and a wire outlet end of the hydrophone is connected with the signal processing system; a flange plate is arranged between the coupling face and the conduction column, a plurality of bolts are arranged in the circumferential direction of the flange plate in a penetrating mode, the heads of the bolts are connected with magnets used for magnetically attracting mining equipment, the tails of the bolts are in threaded connection with nuts, and compression springs are arranged between the nuts and the flange plate. The vibration monitoring device can be magnetically attracted on a shell of mining equipment, and can remotely monitor the mining equipment in an all-weather manner after being installed. The vibration monitoring device is accurate and reliable in measurement, the influence of transverse waves on vibration signal processing is eliminated, and whether mine equipment is abnormal or not can be judged in time by processing the vibration signals.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment monitoring, in particular to a mining equipment vibration monitoring device. Background Art

[0002] Mining equipment comes in many varieties. During routine inspections, monitoring the sound of rotating parts can be used to determine if any equipment is experiencing anomalies. Traditional monitoring methods involve placing a metal rod or other tool against the equipment's casing, transmitting the sound to the ear. This method has the following drawbacks:

[0003] 1. Inspection personnel must stand near the equipment. Due to the huge size of mining equipment, inspection personnel need to climb up and down, which is both laborious and unsafe.

[0004] 2. Whether the equipment is normal or not depends heavily on the inspection personnel’s hearing and experience, and there are human factors;

[0005] 3. The device cannot be monitored all day long. Utility Model Content

[0006] In order to overcome the shortcomings of the background technology, the utility model discloses a mining equipment vibration monitoring device, which adopts the following technical solutions:

[0007] A mining equipment vibration monitoring device includes a vibration coupling body, a hose, a hydrophone, and a signal processing system. The vibration coupling body has a coupling surface at one end and a conductive column at the other end. The hose is filled with a sound-conducting liquid, one end of the hose is sleeved on the conductive column, and the other end is sleeved on the hydrophone. The output end of the hydrophone is connected to the signal processing system.

[0008] A flange is provided between the coupling surface and the conductive column. A plurality of bolts are provided along the circumference of the flange. The head of the bolt is connected to a magnet for magnetically attracting mining equipment. The tail of the bolt is screwed with a nut. A compression spring is provided between the nut and the flange.

[0009] To further improve the technical solution, the vibration coupling body is a cone, the coupling surface is arranged at the bottom of the cone, and the conductive column is arranged at the top of the cone.

[0010] To further improve the technical solution, the signal processing system is composed of a data acquisition card, a digital-to-analog conversion module and a PC, and the output end of the hydrophone is connected to the data acquisition card.

[0011] To further improve the technical solution, a sound-conducting film is provided on the probe portion of the hydrophone, and an acoustic coupling gel is filled between the sound-conducting film and the hydrophone.

[0012] To further improve the technical solution, the hose is a soft rubber tube or a soft plastic tube, and the sound-conducting liquid is water or low-viscosity mineral oil.

[0013] To further improve the technical solution, the magnet is an annular magnet, which is sleeved on the head of the bolt.

[0014] After implementing the above technical solution, compared with the background technology, the beneficial effects produced by the present invention are:

[0015] 1. This vibration monitoring device can be magnetically attached to the outer casing of mining equipment. After installation, it can monitor the mining equipment remotely around the clock without the need for inspection personnel to climb up and down.

[0016] 2. The monitoring is accurate and reliable, and does not rely on the hearing and experience of the inspectors;

[0017] 3. Adjustable fitting force of vibration coupling body;

[0018] 4. The influence of shear waves on vibration signal processing is eliminated, and by processing the vibration signal, it is possible to promptly determine whether there is any abnormality in the mining equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attachment Figure 1 Shown is a schematic diagram of the overall structure of the mining equipment vibration monitoring device.

[0020] Attachment Figure 2 Shown is a schematic structural diagram of a vibration coupling body.

[0021] Attachment Figure 3 Shown is a schematic diagram of the structure of a hydrophone.

[0022] In the accompanying drawings: 1. Vibration coupling body; 11. Coupling surface; 12. Conductive column; 13. Flange; 14. Bolt; 15. Ring magnet; 16. Nut; 17. Compression spring; 2. Hose; 3. Hydrophone; 4. Acoustic coupling gel; 5. Sound-conducting film; 6. Sound-conducting liquid; 7. Signal processing system; 8. Mining equipment. DETAILED DESCRIPTION

[0023] The following describes preferred embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely intended to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that, in the description of the present invention, terms such as "front," "rear," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or component must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can mean fixed, detachable, or integral; mechanical or electrical; direct, indirect through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] Refer to the attached Figure 1 A vibration monitoring device for mining equipment includes a vibration coupling body 1, a hose 2, a hydrophone 3 and a signal processing system 7, and its structure and function are described in detail below.

[0025] Refer to the attached Figure 2 , attached Figure 2 The diagram shows the structure of the vibration coupling body 1. Figure 2 As can be seen, the main body of the vibration coupler 1 is conical, with a coupling surface 11 at its base and a conductive column 12 at its top. Coupling surface 11 is the side of the vibration coupler 1 that contacts the outer casing of the mining equipment 8. Depending on the shape of the outer casing, coupling surface 11 can be flat or curved. The function of the vibration coupler 1 is to transmit the vibrations generated by the rotating components of the mining equipment 8 to the acoustic fluid 6, thereby generating an underwater acoustic signal. The hydrophone 3 then converts the underwater acoustic signal into an electrical signal. The cone amplifies the vibration signal, generating a larger vibration signal on the conductive column 12.

[0026] The hose 2 can be a soft rubber tube or a soft plastic tube. The hose 2 has three functions: first, it forms a liquid sound-conducting channel; second, the hose 2 is a flexible elastomer that can isolate mechanical vibration signals; and third, the hose 2 has a long-distance sound transmission function. The hose 2 is filled with a sound-conducting liquid 6, which can be water or low-viscosity mineral oil. One end of the hose 2 is sleeved on the conductive column 12, and the other end is sleeved on the hydrophone 3. The output end of the hydrophone 3 is connected to the signal processing system 7. In this embodiment, the signal processing system 7 is composed of a data acquisition card, a digital-to-analog conversion module, and a PC. The output end of the hydrophone 3 is connected to the data acquisition card. The signal data collected by the data acquisition card is converted by the digital-to-analog conversion module, and then the PC performs data analysis and processing to finally determine whether the mining equipment 8 has any abnormality.

[0027] During the measurement process, there are certain requirements for the fitting force of the vibration coupling body 1 on the mining equipment 8. The fitting force cannot be too small to prevent the vibration coupling body 1 from losing contact with the mining equipment 8; the fitting force cannot be too large to prevent the vibration signal transmitted by the vibration coupling body 1 from attenuating.

[0028] To ensure that the vibration coupling body 1 adheres to the housing of the mining equipment 8 with appropriate pressure, a flange 13 is provided between the coupling surface 11 and the conductive column 12. Three bolts 14 are provided along the circumference of the flange 13. The heads of the bolts 14 are provided with annular magnets 15. The annular magnets 15 fit over the heads of the bolts 14 and magnetically attach the vibration coupling body 1 to the housing of the mining equipment 8. Nuts 16 are threaded onto the tails of the bolts 14. A compression spring 17 is provided between the nut 16 and the flange 13. Rotating the nut 16 adjusts the adhesion force of the vibration coupling body 1 to the mining equipment 8.

[0029] Refer to the attached Figure 3 , attached Figure 3 FIG. 3 shows a schematic diagram of the structure of the hydrophone 3. Figure 3 As can be seen, hydrophone 3, also known as an underwater microphone, is a transducer that converts underwater acoustic signals into electrical signals. An acoustically conductive film 5 is provided on the probe portion of hydrophone 3. Acoustic coupling gel 4 is filled between the film 5 and the hydrophone 3 to improve the coupling between the film 5 and the hydrophone 3.

[0030] Mechanical vibration signals are primarily composed of shear and longitudinal waves. Conventional vibration sensors have difficulty separating these waves, hindering signal processing. It is well known that liquids can transmit waves, but they only propagate longitudinal waves, not shear waves. This vibration monitoring device uses an acoustically conductive liquid to transmit mechanical vibration signals, filtering out shear waves and retaining only longitudinal waves. This eliminates the influence of shear waves on signal processing and facilitates the extraction of the vibration signal's spectral characteristics.

[0031] Parts not described in detail are prior art. Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mining equipment vibration monitoring device, characterized by: The invention comprises a vibration coupling body, a hose, a hydrophone and a signal processing system; one end of the vibration coupling body has a coupling surface, and the other end has a conductive column; the hose is filled with a sound-conducting liquid, one end of the hose is sleeved on the conductive column, and the other end is sleeved on the hydrophone, and the outlet end of the hydrophone is connected to the signal processing system; A flange is provided between the coupling surface and the conductive column. A plurality of bolts are provided along the circumference of the flange. The head of the bolt is connected to a magnet for magnetically attracting mining equipment. The tail of the bolt is screwed with a nut. A compression spring is provided between the nut and the flange.

2. The mining equipment vibration monitoring device according to claim 1, wherein: The vibration coupling body is a cone-shaped body, the coupling surface is arranged at the bottom of the cone-shaped body, and the conductive column is arranged at the top of the cone-shaped body.

3. The mining equipment vibration monitoring device according to claim 1, characterized in that: The signal processing system consists of a data acquisition card, a digital-to-analog conversion module and a PC, and the output end of the hydrophone is connected to the data acquisition card.

4. The mining equipment vibration monitoring device according to claim 1, wherein: A sound-conducting film is provided on the probe portion of the hydrophone, and an acoustic coupling gel is filled between the sound-conducting film and the hydrophone.

5. The mining equipment vibration monitoring device according to claim 1, wherein: The hose is a soft rubber tube or a soft plastic tube, and the sound-conducting liquid is water or low-viscosity mineral oil.

6. The mining equipment vibration monitoring device according to claim 1, characterized in that: The magnet is an annular magnet which is sleeved on the head of the bolt.

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