Mechanical vibration frequency spectrum fault detection device

Abstract

The invention relates to the technical field of mechanical vibration detection, and discloses a mechanical vibration frequency spectrum fault detection device which comprises a shell, a sealing sleeve is fixedly installed in the middle of the bottom face of an inner cavity of the shell, a circuit board is arranged in the middle of the inner cavity of the shell, and a six-axis accelerometer used for transmitting vibration is fixedly installed on the lower end face of the circuit board. Clamping seats are attached to the left side and the right side of the side wall of the circuit board, and the clamping mechanisms are arranged on the left side and the right side of the bottom face of an inner cavity of the shell; the buffer mechanism is arranged on the side wall of the clamping seat; the heat dissipation mechanisms are arranged on the left side and the right side of the bottom face of the inner cavity of the shell. Through cooperation of the clamping mechanism and the buffer mechanism, a circuit board can be rapidly and softly clamped and fixed, meanwhile, the heat dissipation mechanism is arranged, when a machine vibrates, the circuit board can be blown and cooled, the temperature of the circuit board in the working process is reduced, and the detection precision of the whole device is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical vibration detection, and in particular to a mechanical vibration spectrum fault detection device. Background Art

[0002] Mechanical vibration is inevitable during the operation of machinery. Strong mechanical vibration will have a great impact on the working performance of the mechanical transmission mechanism and cause danger. For example, during the operation of hydraulic fracturing machine reducers, shield machine reducers, and heavy machinery transmissions, due to their harsh working environment, body vibration can easily cause failures and extremely high maintenance costs. There is an urgent need for accurate fault prediction and diagnosis technology, especially mechanical vibration detection.

[0003] After searching, it was found that a mechanical transmission vibration spectrum online fault warning device proposed in publication number CN214951785U includes a detection body, the detection body includes a mounting shell, and a mounting circuit board is detachably connected to the inside of the mounting shell. The upper end of the mounting circuit board is fixedly connected to a battery for power supply, an Internet of Things module for connecting to the Internet of Things, an MCU microprocessor for processing information, and a spring antenna for receiving vibration signals in sequence. The lower end of the mounting circuit board is fixedly connected to a six-axis accelerometer for transmitting vibration, and the lower end of the mounting shell is fixedly connected to an attractive magnet.

[0004] This patent completes the fixation of the installed circuit board through the cooperation of the mounting column and the fixing screw hole, etc., achieving the effect of facilitating detection, reducing construction costs and facilitating maintenance. However, in actual use, due to mechanical vibration, the environment in the factory is generally used in a high temperature and dusty environment, and the above-mentioned device lacks timely cooling measures for the circuit board, which can easily lead to sensor performance drift (such as decreased accelerometer sensitivity) or cable aging and short circuit. Therefore, a mechanical vibration spectrum fault detection device is urgently needed to solve such problems. Summary of the Invention

[0005] (1) Technical problems solved

[0006] The object of the present invention is to provide a mechanical vibration spectrum fault detection device to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a mechanical vibration spectrum fault detection device, comprising a housing, wherein attraction magnets are fixedly mounted around the lower end surface of the housing, a cover plate is placed on the upper end surface of the housing, a sealing sleeve is fixedly mounted in the middle of the bottom surface of the inner cavity of the housing, a circuit board is provided in the middle of the inner cavity of the housing, a six-axis accelerometer for transmitting vibration is fixedly mounted on the lower end surface of the circuit board, the six-axis accelerometer is connected to the sealing sleeve through-and-through, and clamping seats are attached to the left and right sides of the side walls of the circuit board, and further comprising:

[0009] A clamping mechanism, the clamping mechanism being arranged on the left and right sides of the bottom surface of the inner cavity of the shell, and the clamping mechanism being used to bring the clamping seats on both sides close to each other;

[0010] A buffer mechanism, the buffer mechanism being arranged on the side wall of the clamping seat and being used to provide buffering when clamping the circuit board;

[0011] The heat dissipation mechanism is arranged on the left and right sides of the bottom surface of the inner cavity of the shell, and is used to cool the circuit board.

[0012] Preferably, the clamping mechanism includes a bidirectional screw rotatably mounted on the front side of the left and right side walls of the inner cavity of the shell, a limit rod fixedly mounted on the rear side of the left and right side walls of the inner cavity of the shell, a dual-axis motor fixedly mounted on the middle part of the front side of the bottom of the inner cavity of the shell through a frame, the output shaft end of the dual-axis motor is fixedly connected to the bidirectional screw, the left and right sides of the bidirectional screw have opposite thread directions, and the left and right sides of the outer wall of the bidirectional screw are threadedly mounted with a limit sleeve, the limit sleeve located on the rear side is slidably connected to the limit rod, and a sliding frame is fixedly mounted on the side walls of the limit sleeve on the front and rear sides.

[0013] Preferably, the buffer mechanism includes a positioning rod fixedly mounted on the inner side wall of the sliding frame, a positioning seat is slidably mounted on the front and rear sides of the side wall of the positioning rod, a first connecting ear is fixedly mounted on the side wall of the positioning seat, a second connecting ear is fixedly mounted on the side wall of the clamping seat, a buffer spring is wound around the front and rear sides of the side wall of the positioning rod, and a positioning plate is rotatably mounted on the inner cavity of the first connecting ear.

[0014] Preferably, one end of the buffer spring is fixedly mounted on the bottom surface of the inner cavity of the sliding frame, the other end of the buffer spring is fixedly mounted on the side wall of the positioning seat, and the other end of the positioning plate rotates in the inner cavity of the second connecting ear.

[0015] Preferably, the heat dissipation mechanism includes a support plate fixedly mounted on the left and right side walls of the inner cavity of the shell, a vertical rod is rotatably mounted on the inner cavity of the support plate, a worm is slidably mounted on the upper part of the side wall of the vertical rod, a worm wheel is meshingly mounted on the rear side of the worm, a screw sleeve is fixedly mounted on the inner cavity of the worm wheel, and a tripod is threadedly mounted on the inner cavity of the screw sleeve.

[0016] Preferably, a connecting spring is wound and installed on the side wall of the vertical rod, a threaded groove is opened on the lower side wall of the vertical rod, a vibration seat is threadedly installed on the lower side wall of the vertical rod, the thread lead angle of the vertical rod is greater than the equivalent friction angle of the vibration seat, one end of the connecting spring is fixedly installed on the bottom surface of the inner cavity of the shell, and the other end of the connecting spring is fixedly installed on the side wall of the vibration seat.

[0017] Preferably, the inner cavity of the clamping seat is provided with a pressure storage chamber, and a piston plate is slidably installed in the inner cavity of the pressure storage chamber, a piston rod is fixedly installed on the side wall of the piston plate, the piston rod is fixedly connected to the tripod, and a return spring is wound around the side wall of the piston rod, one end of the return spring is fixedly installed on the side wall of the piston plate, and the other end of the return spring is fixedly installed on the inner cavity side wall of the pressure storage chamber.

[0018] Preferably, an air inlet hole connected to the pressure storage chamber is provided on the front and rear side walls of the clamping seat, and the inner cavity of the air inlet hole is provided with a one-way air valve with the outlet to the inner cavity of the pressure storage chamber. An air outlet hole connected to the pressure storage chamber is provided on the inner side wall of the clamping seat, and the inner cavity of the air outlet hole is provided with a one-way air valve with the outlet to the outside world. A dustproof air cover is provided around the outer side wall of the shell.

[0019] Preferably, a locking column is fixedly installed around the lower end surface of the cover plate, a locking sleeve is fixedly installed around the inner side wall of the shell, a locking groove is provided around the inner side wall of the locking sleeve, a recovery groove is provided on the side wall of the locking column, a locking block is slidably installed on the side wall of the inner cavity of the recovery groove, a locking spring is fixedly installed on the side wall of the locking block, one end of the locking spring is fixedly installed on the bottom surface of the inner cavity of the recovery groove, the locking block slides in the inner cavity of the locking groove, and the locking column is slidably connected to the locking sleeve.

[0020] Preferably, a handle is fixedly installed on the middle part of the upper end surface of the cover plate, a display is fixedly installed on the right side of the upper end surface of the cover plate, a battery is fixedly installed on the left side of the lower end surface of the cover plate, the display is electrically connected to the battery, and the upper end surface of the circuit board is fixedly installed with a battery for power supply, an Internet of Things module for connecting to the Internet of Things, an MCU microprocessor for processing information, and a spring antenna for receiving vibration signals.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] When the circuit board is pressed against the side wall of the clamping seat, the bidirectional screw rods are continuously rotated to move the clamping seat inward, thereby achieving stable clamping of the circuit board; when the circuit board is pressed against the side wall of the clamping seat, the bidirectional screw rods are continuously rotated to move the clamping seat inward, thereby achieving stable clamping of the circuit board; when the circuit board is pressed against the side wall of the clamping seat, the bidirectional screw rods are continuously rotated to move the clamping seat inward, thereby achieving stable clamping of the circuit board; when the circuit board is pressed against the side wall of the clamping seat, the bidirectional screw rods are continuously rotated to move the clamping seat inward, thereby achieving stable clamping of the circuit board; when the circuit board is pressed against the side wall of the clamping seat

[0023] 2. In this invention, when the machine vibrates, the vibration seat will also move up and down under the action of its own vibration force. At this time, the vibration seat will drive the vertical rod to rotate continuously, and the vertical rod can drive the worm to rotate, and the worm wheel will drive the screw sleeve to rotate. Under the limit constraint of the piston rod, the tripod will continuously screw in or out of the inner cavity of the screw sleeve; when the tripod drives the piston rod to move the piston plate to the left side of the inner cavity of the pressure accumulation chamber, the volume of the cavity on the left side of the pressure accumulation chamber continues to decrease, and the pressure in the internal cavity increases, and finally the high-pressure airflow can be discharged through the air outlet. By setting the dustproof air cover, the flow of air inside the shell can be accelerated, and the function of stable cooling of the circuit board can be realized to ensure that the circuit board is always working at normal temperature, thereby improving the accuracy of the entire device in detecting machine vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a mechanical vibration spectrum fault detection device according to the present invention;

[0025] Figure 2 This is a bottom-up schematic diagram of the overall structure of a mechanical vibration spectrum fault detection device according to the present invention;

[0026] Figure 3 This is a schematic diagram of a partial top view of a mechanical vibration spectrum fault detection device according to the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of a housing of a mechanical vibration spectrum fault detection device according to the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of a clamping mechanism of a mechanical vibration spectrum fault detection device of the present invention;

[0029] Figure 6This is a schematic diagram of the heat dissipation structure of a mechanical vibration spectrum fault detection device of the present invention;

[0030] Figure 7 This is a schematic cross-sectional view of the clamping seat of a mechanical vibration spectrum fault detection device according to the present invention;

[0031] Figure 8 This is a schematic diagram showing the structure of the cover of a mechanical vibration spectrum fault detection device of the present invention;

[0032] Figure 9 The figure is a schematic cross-sectional view of the locking sleeve of a mechanical vibration spectrum fault detection device according to the present invention.

[0033] In the figure: 1. Housing; 11. Attracting magnet; 12. Dustproof air cover; 2. Cover; 21. Locking column; 211. Recovery slot; 212. Locking block; 213. Locking spring; 22. Locking sleeve; 221. Locking slot; 23. Handle; 24. Display; 25. Battery; 3. Sealing sleeve; 4. Circuit board; 5. Six-axis accelerometer; 6. Clamping seat; 61. Pressure storage chamber; 611. Air inlet; 612. Air outlet; 7. Clamping mechanism; 71. Bidirectional screw; 72. Limit rod; 73, dual-axis motor; 74, limit sleeve; 75, sliding frame; 8, buffer mechanism; 81, positioning rod; 82, positioning seat; 83, first connecting ear; 84, second connecting ear; 85, buffer spring; 86, positioning plate; 9, heat dissipation mechanism; 91, support plate; 92, vertical rod; 93, worm; 94, worm gear; 95, screw sleeve; 96, tripod; 97, connecting spring; 98, vibration seat; 99, piston plate; 910, piston rod; 911, return spring. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-9 The present invention provides a technical solution for a mechanical vibration spectrum fault detection device, comprising a housing 1, with attracting magnets 11 fixedly mounted around the lower end surface of the housing 1, a cover plate 2 placed on the upper end surface of the housing 1, a sealing sleeve 3 fixedly mounted in the middle of the bottom surface of the inner cavity of the housing 1, a circuit board 4 disposed in the middle of the inner cavity of the housing 1, a six-axis accelerometer 5 for transmitting vibration fixedly mounted on the lower end surface of the circuit board 4, the six-axis accelerometer 5 being connected to the sealing sleeve 3 through-hole, and clamping seats 6 attached to the left and right sides of the side walls of the circuit board 4, and further comprising:

[0036] The clamping mechanism 7 is provided on the left and right sides of the bottom surface of the inner cavity of the housing 1 and is used to bring the clamping seats 6 on both sides close to each other;

[0037] The buffer mechanism 8 is provided on the side wall of the clamping seat 6 and is used to provide a buffer when clamping the circuit board 4;

[0038] The heat dissipation mechanism 9 is arranged on the left and right sides of the bottom surface of the inner cavity of the shell 1 , and is used to cool the circuit board 4 .

[0039] Furthermore, the clamping mechanism 7 includes a bidirectional screw 71 rotatably mounted on the front sides of the left and right side walls of the inner cavity of the shell 1, a limit rod 72 fixedly mounted on the rear sides of the left and right side walls of the inner cavity of the shell 1, a dual-axis motor 73 fixedly mounted on the middle part of the front side of the bottom of the inner cavity of the shell 1 through a frame, the output shaft end of the dual-axis motor 73 is fixedly connected to the bidirectional screw 71, the left and right sides of the bidirectional screw 71 have opposite thread directions, and the left and right sides of the outer wall of the bidirectional screw 71 are threadedly mounted with a limit sleeve 74, the limit sleeve 74 located on the rear side is slidably connected to the limit rod 72, and sliding frames 75 are fixedly mounted on the side walls of the limit sleeve 74 on the front and rear sides;

[0040] The buffer mechanism 8 includes a positioning rod 81 fixedly mounted on the inner side wall of the sliding frame 75, a positioning seat 82 is slidably mounted on the front and rear sides of the side wall of the positioning rod 81, a first connecting ear 83 is fixedly mounted on the side wall of the positioning seat 82, and a second connecting ear 84 is fixedly mounted on the side wall of the clamping seat 6, a buffer spring 85 is wound around the front and rear sides of the side wall of the positioning rod 81, and a positioning plate 86 is rotatably mounted in the inner cavity of the first connecting ear 83;

[0041] One end of the buffer spring 85 is fixedly mounted on the bottom surface of the inner cavity of the sliding frame 75 , the other end of the buffer spring 85 is fixedly mounted on the side wall of the positioning seat 82 , and the other end of the positioning plate 86 rotates in the inner cavity of the second connecting ear 84 .

[0042] It should be noted that the user can place the circuit board 4 between the left and right clamping seats 6, and then start the dual-axis motor 73 to rotate the bidirectional screw 71. Under the restraining action of the limit rod 72, the limit sleeves 74 on the left and right sides can drive the sliding frame 75 to move closer to each other, that is, the distance between the left and right clamping seats 6 will also be shortened, so as to achieve stable clamping of the circuit board 4.

[0043] When the circuit board 4 is pressed against the side wall of the clamping seat 6, the bidirectional screw 71 is continuously rotated to continue to move the clamping seat 6 inward. At this time, the clamping seat 6 will transmit the reaction force given to the circuit board 4 to the second connecting ear 84. Since the length of the positioning plate 86 is fixed, the angle between the positioning plates 86 on the front and rear sides will continue to increase. The first connecting ears 83 on the front and rear sides will drive the positioning seat 82 to slide toward the front and rear ends of the positioning rod 81, so that the buffer spring 85 is compressed. At this time, the reaction force given to the circuit board 4 by the clamping seat 6 will be stored in the buffer spring 85 to avoid damage to the circuit board 4 caused by the excessive clamping of the clamping seat 6, thereby ensuring the safety of the circuit board 4 during installation.

[0044] Furthermore, the heat dissipation mechanism 9 includes a support plate 91 fixedly mounted on the left and right side walls of the inner cavity of the housing 1, a vertical rod 92 is rotatably mounted on the inner cavity of the support plate 91, a worm 93 is slidably mounted on the upper side wall of the vertical rod 92, a worm gear 94 is meshedly mounted on the rear side of the worm 93, a screw sleeve 95 is fixedly mounted on the inner cavity of the worm gear 94, and a tripod rod 96 is threadedly mounted on the inner cavity of the screw sleeve 95;

[0045] A connecting spring 97 is wound around the side wall of the vertical rod 92. A threaded groove is formed on the lower side wall of the vertical rod 92. A vibration seat 98 is threadedly mounted on the lower side wall of the vertical rod 92. The thread lead angle of the vertical rod 92 is greater than the equivalent friction angle of the vibration seat 98. One end of the connecting spring 97 is fixedly mounted on the bottom surface of the inner cavity of the housing 1, and the other end of the connecting spring 97 is fixedly mounted on the side wall of the vibration seat 98.

[0046] The inner cavity of the clamping seat 6 is provided with a pressure storage chamber 61. A piston plate 99 is slidably mounted in the inner cavity of the pressure storage chamber 61. A piston rod 910 is fixedly mounted on the side wall of the piston plate 99. The piston rod 910 is fixedly connected to the tripod rod 96. A return spring 911 is wound around the side wall of the piston rod 910. One end of the return spring 911 is fixedly mounted on the side wall of the piston plate 99, and the other end of the return spring 911 is fixedly mounted on the inner cavity side wall of the pressure storage chamber 61.

[0047] An air inlet 611 communicating with the pressure storage chamber 61 is provided on the front and rear side walls of the clamping seat 6. The inner cavity of the air inlet 611 is provided with a one-way air valve whose outlet is to the inner cavity of the pressure storage chamber 61. An air outlet 612 communicating with the pressure storage chamber 61 is provided on the inner side wall of the clamping seat 6. The inner cavity of the air outlet 612 is provided with a one-way air valve whose outlet is to the outside. A dustproof air cover 12 is provided around the outer wall of the shell 1.

[0048] It should be noted that when the machine vibrates, the vibration seat 98 will also move up and down under the action of its own vibration force. Since the thread lead angle of the vertical rod 92 is greater than the equivalent friction angle of the vibration seat 98, the vibration seat 98 will drive the vertical rod 92 to rotate continuously clockwise and counterclockwise. The vertical rod 92 is fixedly connected to the worm 93, and the vertical rod 92 can drive the worm 93 to rotate. The worm gear 94 is meshed with the worm 93, and the worm gear 94 drives the screw sleeve 95 to rotate. Under the limit constraint of the piston rod 910, the tripod rod 96 will continuously rotate in or out of the inner cavity of the screw sleeve 95.

[0049] When the tripod 96 drives the piston rod 910 to move the piston plate 99 to the right side of the inner cavity of the pressure storage chamber 61, the volume of the cavity on the left side of the pressure storage chamber 61 continues to increase, and the outside air can enter the inner cavity of the pressure storage chamber 61 through the air inlet 611 to replenish the air capacity. When the tripod 96 drives the piston rod 910 to move the piston plate 99 to the left side of the inner cavity of the pressure storage chamber 61, the volume of the cavity on the left side of the pressure storage chamber 61 continues to decrease, and the internal cavity pressure increases, and finally the high-pressure airflow can be discharged through the air outlet 612. Through the setting of the dustproof air cover 12, the flow of air inside the shell 1 can be accelerated, thereby realizing the function of stable cooling of the circuit board 4, so as to ensure that the circuit board 4 is always working at normal temperature, thereby improving the accuracy of the entire device in detecting machine vibration.

[0050] Furthermore, a locking column 21 is fixedly installed around the lower end surface of the cover plate 2, a locking sleeve 22 is fixedly installed around the inner side wall of the shell 1, a locking groove 221 is opened around the inner side wall of the locking sleeve 22, a recovery groove 211 is opened on the side wall of the locking column 21, a locking block 212 is slidably installed on the side wall of the inner cavity of the recovery groove 211, a locking spring 213 is fixedly installed on the side wall of the locking block 212, one end of the locking spring 213 is fixedly installed on the bottom surface of the inner cavity of the recovery groove 211, the locking block 212 slides in the inner cavity of the locking groove 221, and the locking column 21 is slidably connected to the locking sleeve 22;

[0051] A handle 23 is fixedly installed on the middle part of the upper end surface of the cover plate 2, a display 24 is fixedly installed on the right side of the upper end surface of the cover plate 2, a battery 25 is fixedly installed on the left side of the lower end surface of the cover plate 2, the display 24 is electrically connected to the battery 25, and the upper end surface of the circuit board 4 is fixedly installed with a battery for power supply, an Internet of Things module for connecting to the Internet of Things, an MCU microprocessor for processing information, and a spring antenna for receiving vibration signals.

[0052] When the cover 2 is completely closed on the upper end of the shell 1, the locking groove 221 is flush with the recovery groove 211. Under the elastic action of the locking spring 213, the locking column 21 can slide into the locking groove 221, thereby locking the cover 2 and keeping the air inside the entire device in a closed state, thereby preventing external dust from falling onto the circuit board 4, reducing the possibility of dust clogging the sensor or heat dissipation holes, and ensuring the heat dissipation and measurement accuracy of the entire device.

[0053] Working principle:

[0054] Before working, the user can place the circuit board 4 between the left and right clamping seats 6, and then start the dual-axis motor 73 to rotate the bidirectional screw 71. Under the restraint of the limit rod 72, the limit sleeves 74 on the left and right sides can drive the sliding frame 75 to move closer to each other, that is, the distance between the left and right clamping seats 6 will also be shortened, so as to achieve stable clamping of the circuit board 4.

[0055] When the circuit board 4 is pressed against the side wall of the clamping seat 6, the bidirectional screw 71 is continuously rotated to continue to move the clamping seat 6 inward. At this time, the clamping seat 6 transmits the reaction force exerted on the circuit board 4 to the second connecting ear 84. Since the length of the positioning plate 86 is fixed, the angle between the positioning plates 86 on the front and rear sides will continue to increase. The first connecting ears 83 on the front and rear sides will drive the positioning seat 82 to slide toward the front and rear ends of the positioning rod 81, so that the buffer spring 85 is compressed. At this time, the reaction force exerted on the circuit board 4 by the clamping seat 6 will be stored in the buffer spring 85, so as to avoid damage to the circuit board 4 caused by the clamping seat 6 being too hard, thereby ensuring the safety of the circuit board 4 during installation.

[0056] When the cover 2 is completely closed on the upper end of the shell 1, the locking groove 221 is flush with the recovery groove 211, and the elastic force of the locking spring 213 can make the locking column 21 slide into the locking groove 221, thereby locking the cover 2, so as to keep the air inside the entire device in a closed state, avoid external dust from falling onto the circuit board 4, reduce the possibility of dust clogging the sensor or heat dissipation holes, and ensure the heat dissipation and measurement accuracy of the entire device;

[0057] During operation, the user attaches the entire device to the outer casing of the machine through the magnet 11. The vibration force generated by the machine can be received by the six-axis accelerometer 5, and the information is processed by the MCU microprocessor, so that the obtained information can be transmitted to the mobile terminal through the Internet of Things module. The initial vibration data measurement of the device is uploaded to the cloud for storage. At this time, the entire device can realize the function of real-time monitoring of the machine vibration;

[0058] When the machine vibrates, the vibration seat 98 will also move up and down under the action of its own vibration force. The thread lead angle of the vertical rod 92 is greater than the equivalent friction angle of the vibration seat 98. At this time, the vibration seat 98 will drive the vertical rod 92 to continuously rotate clockwise and counterclockwise. The vertical rod 92 is fixedly connected to the worm 93, and the vertical rod 92 can drive the worm 93 to rotate. The worm gear 94 is engaged with the worm 93, and the worm gear 94 will drive the screw sleeve 95 to rotate. Under the limit constraint of the piston rod 910, the tripod rod 96 will continuously rotate in or out of the inner cavity of the screw sleeve 95;

[0059] When the tripod 96 drives the piston rod 910 to move the piston plate 99 to the right side of the inner cavity of the pressure storage chamber 61, the volume of the cavity on the left side of the pressure storage chamber 61 continues to increase, and the outside air can enter the inner cavity of the pressure storage chamber 61 through the air inlet 611 to replenish the air capacity. When the tripod 96 drives the piston rod 910 to move the piston plate 99 to the left side of the inner cavity of the pressure storage chamber 61, the volume of the cavity on the left side of the pressure storage chamber 61 continues to decrease, and the internal cavity pressure increases, and finally the high-pressure airflow can be discharged through the air outlet 612. Through the setting of the dustproof air cover 12, the flow of air inside the shell 1 can be accelerated, thereby realizing the function of stable cooling of the circuit board 4, so as to ensure that the circuit board 4 is always working at normal temperature, thereby improving the accuracy of the entire device in detecting machine vibration.

[0060] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A mechanical vibration spectrum fault detection device, comprising a housing (1), wherein an attracting magnet (11) is fixedly mounted around the lower end surface of the housing (1), and characterized in that: A cover plate (2) is placed on the upper end surface of the shell (1), a sealing sleeve (3) is fixedly installed in the middle of the bottom surface of the inner cavity of the shell (1), a circuit board (4) is provided in the middle of the inner cavity of the shell (1), a six-axis accelerometer (5) for transmitting vibration is fixedly installed on the lower end surface of the circuit board (4), the six-axis accelerometer (5) is connected to the sealing sleeve (3), and the left and right sides of the side wall of the circuit board (4) are affixed with a clamping seat (6), and further comprising: A clamping mechanism (7), the clamping mechanism (7) being arranged on the left and right sides of the bottom surface of the inner cavity of the shell (1), and the clamping mechanism (7) being used to bring the clamping seats (6) on both sides closer to each other; A buffer mechanism (8), the buffer mechanism (8) being arranged on a side wall of the clamping seat (6), and the buffer mechanism (8) being used to provide buffering when clamping the circuit board (4); A heat dissipation mechanism (9) is provided on the left and right sides of the bottom surface of the inner cavity of the housing (1), and the heat dissipation mechanism (9) is used to cool the circuit board (4).

2. The mechanical vibration spectrum fault detection device according to claim 1, characterized in that: The clamping mechanism (7) includes a bidirectional screw (71) rotatably mounted on the front side of the left and right side walls of the inner cavity of the shell (1); a limiting rod (72) is fixedly mounted on the rear side of the left and right side walls of the inner cavity of the shell (1); a biaxial motor (73) is fixedly mounted on the middle part of the front side of the bottom of the inner cavity of the shell (1) through a frame; the output shaft end of the biaxial motor (73) is fixedly connected to the bidirectional screw (71); the left and right sides of the bidirectional screw (71) have opposite thread directions; the left and right sides of the outer wall of the bidirectional screw (71) are threadedly mounted with limiting sleeves (74); the limiting sleeve (74) located on the rear side is slidably connected to the limiting rod (72); and sliding frames (75) are fixedly mounted on the side walls of the limiting sleeve (74) on the front and rear sides.

3. The mechanical vibration spectrum fault detection device according to claim 2, characterized in that: The buffer mechanism (8) includes a positioning rod (81) fixedly mounted on the inner side wall of the sliding frame (75), a positioning seat (82) is slidably mounted on the front and rear sides of the side wall of the positioning rod (81), a first connecting ear (83) is fixedly mounted on the side wall of the positioning seat (82), a second connecting ear (84) is fixedly mounted on the side wall of the clamping seat (6), a buffer spring (85) is wound around the front and rear sides of the side wall of the positioning rod (81), and a positioning plate (86) is rotatably mounted in the inner cavity of the first connecting ear (83).

4. The mechanical vibration spectrum fault detection device according to claim 3, characterized in that: One end of the buffer spring (85) is fixedly mounted on the bottom surface of the inner cavity of the sliding frame (75), the other end of the buffer spring (85) is fixedly mounted on the side wall of the positioning seat (82), and the other end of the positioning plate (86) rotates in the inner cavity of the second connecting ear (84).

5. The mechanical vibration spectrum fault detection device according to claim 4, characterized in that: The heat dissipation mechanism (9) comprises a support plate (91) fixedly mounted on the left and right side walls of the inner cavity of the housing (1); a vertical rod (92) is rotatably mounted in the inner cavity of the support plate (91); a worm (93) is slidably mounted on the upper portion of the side wall of the vertical rod (92); a worm wheel (94) is meshingly mounted on the rear side of the worm wheel (93); a screw sleeve (95) is fixedly mounted in the inner cavity of the worm wheel (94); and a tripod rod (96) is threadedly mounted in the inner cavity of the screw sleeve (95).

6. The mechanical vibration spectrum fault detection device according to claim 5, characterized in that: A connecting spring (97) is wound and installed on the side wall of the vertical rod (92), a thread groove is opened on the lower side wall of the vertical rod (92), and a vibration seat (98) is threadedly installed on the lower side wall of the vertical rod (92), the thread lead angle of the vertical rod (92) is greater than the equivalent friction angle of the vibration seat (98), one end of the connecting spring (97) is fixedly installed on the bottom surface of the inner cavity of the shell (1), and the other end of the connecting spring (97) is fixedly installed on the side wall of the vibration seat (98).

7. The mechanical vibration spectrum fault detection device according to claim 6, characterized in that: The inner cavity of the clamping seat (6) is provided with a pressure storage chamber (61), the inner cavity of the pressure storage chamber (61) is slidably mounted with a piston plate (99), a piston rod (910) is fixedly mounted on the side wall of the piston plate (99), the piston rod (910) is fixedly connected to the tripod (96), a return spring (911) is wound around the side wall of the piston rod (910), one end of the return spring (911) is fixedly mounted on the side wall of the inner cavity of the pressure storage chamber (61), and the other end of the return spring (911) is fixedly mounted on the side wall of the inner cavity of the pressure storage chamber (61).

8. The mechanical vibration spectrum fault detection device according to claim 1, characterized in that: An air inlet (611) communicating with the pressure storage chamber (61) is provided on the front and rear side walls of the clamping seat (6), and the inner cavity of the air inlet (611) is provided with a one-way air valve that exports to the inner cavity of the pressure storage chamber (61). An air outlet (612) communicating with the pressure storage chamber (61) is provided on the inner side wall of the clamping seat (6), and the inner cavity of the air outlet (612) is provided with a one-way air valve that exports to the outside. A dustproof air cover (12) is provided around the outer wall of the shell (1).

9. The mechanical vibration spectrum fault detection device according to claim 1, characterized in that: A locking column (21) is fixedly mounted around the lower end surface of the cover plate (2), a locking sleeve (22) is fixedly mounted around the inner side wall of the shell (1), a locking groove (221) is provided around the inner side wall of the locking sleeve (22), a recovery groove (211) is provided on the side wall of the locking column (21), a locking block (212) is slidably mounted on the inner side wall of the recovery groove (211), a locking spring (213) is fixedly mounted on the side wall of the locking block (212), one end of the locking spring (213) is fixedly mounted on the bottom surface of the inner cavity of the recovery groove (211), the locking block (212) slides in the inner cavity of the locking groove (221), and the locking column (21) is slidably connected to the locking sleeve (22).

10. The mechanical vibration spectrum fault detection device according to claim 1, characterized in that: A handle (23) is fixedly mounted on the middle portion of the upper end surface of the cover plate (2), a display (24) is fixedly mounted on the right side of the upper end surface of the cover plate (2), a battery (25) is fixedly mounted on the left side of the lower end surface of the cover plate (2), the display (24) is electrically connected to the battery (25), and a battery for power supply, an Internet of Things module for connecting to the Internet of Things, an MCU microprocessor for processing information, and a spring antenna for receiving vibration signals are fixedly mounted on the upper end surface of the circuit board (4) in sequence.

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