Direct current fan vibration fault detection device

Abstract

The utility model discloses a direct-current fan vibration fault detection device, which belongs to the field of fan detection and comprises a heat dissipation cover, a fan blade is movably connected to the middle of the inner arc surface of the heat dissipation cover through a rotating shaft, a transmission shaft is fixedly mounted on the back surface of the fan blade, and through holes are formed in the two sides of the outer arc surface of a fan-shaped clamping piece. The two fan-shaped clamping pieces are connected in a penetrating mode through a through hole, the change of the magnetic flux in the electromagnetic coil can be directly reflected on the change of the inductance value of the electromagnetic coil, the change of the inductance value in the electromagnetic coil is accurately detected and analyzed through a special detection circuit and equipment, the vibration amplitude associated with the change of the inductance value is reversed, and the vibration amplitude of the electromagnetic coil is accurately detected. In the whole transmission and induction process, the vibration of the fan is finally converted into detectable change of the inductance value in the electromagnetic coil through the synergistic effect of a series of components, so that a reliable basis is provided for accurately judging the vibration condition of the fan, and possible fault hidden dangers of the fan can be found in time.

Description

Technical Field

[0001] The utility model relates to the technical field of fan detection, in particular to a DC fan vibration fault detection device. Background Art

[0002] In the field of modern industrial and electronic equipment, DC fans are widely used in various cooling systems, such as computer servers, communication base station equipment, industrial control cabinets, etc. Their stable operation is crucial to ensuring the normal operating temperature of the equipment and preventing overheating damage. However, with the increase in usage time and changes in the working environment, DC fans may experience various faults, among which vibration faults are more common.

[0003] Traditional DC fan fault detection often focuses on electrical parameters such as current, voltage, and speed. While these parameters can reflect the fan's operating status to a certain extent, they are difficult to accurately detect vibration problems caused by the fan's internal mechanical structure. If not discovered in time, the vibration will gradually intensify, not only causing the fan's own performance to decline and noise to increase, but also may cause abnormal vibration of the entire equipment, affecting the reliability and lifespan of other surrounding components, and even causing equipment shutdown failure.

[0004] Therefore, the utility model provides a DC fan vibration fault detection device to solve the above problems. Utility Model Content

[0005] The utility model provides a DC fan vibration fault detection device, which aims to solve the problem proposed in the background technology that the existing detection method relies on electrical parameters and cannot intuitively detect internal vibrations, resulting in reduced performance of the fan itself and increased noise. It may also cause abnormal vibration of the entire equipment, affecting the reliability and life of other surrounding components.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes a heat dissipation cover, the middle part of the inner arc surface of the heat dissipation cover is movably connected with a fan blade through a rotating shaft, the back of the fan blade is fixedly installed with a transmission shaft, and an adapter block is fixedly installed with one end of the transmission shaft, and fan-shaped clips are provided on both sides of the outer arc surface of the adapter block, and through holes are provided on both sides of the outer arc surface of the fan-shaped clip, and the two fan-shaped clips are connected through the through holes, and the outer arc surface of the adapter block is movably sleeved with a sleeve, and the back of the adapter block is provided with an abutment end, and the top of the sleeve is provided with an inner curved surface, and the inner curved surface of the sleeve is movably fitted on the inner curved surface of the adapter block, and one side of the inner curved surface of the sleeve is connected to the transmission shaft together with the adapter block.

[0007] Preferably, a connecting piece is slidably connected to the inner arc surface of the sleeve near the adapter block, one end of the connecting piece is provided with a touch end, and a fixing piece is slidably sleeved on the inner arc surface of the sleeve near the connecting piece, and a protruding end is provided in the middle of the inner arc surface of the fixing piece.

[0008] Preferably, the top of the protruding end is a hollow structure, the inner arc surface of the protruding end is movably adapted to the touch end on the connecting piece, the top of the outer arc surface of the protruding end is sleeved with a magnet, and the side of the protruding end close to the magnet is movably sleeved with an electromagnetic coil.

[0009] Preferably, one side of the magnet is fitted on the inner top wall of the fixing part, a bottom cover is sleeved on one edge of the outer arc surface of the sleeve, a sealing end is provided in the middle of the inner arc surface of the bottom cover, the upper surface of the sealing end is fitted and connected with the lower surface of the sleeve, and a spring is sleeved on the outer arc surface of the abutting end, and the spring is fixedly adapted to the connecting part.

[0010] Preferably, a clamping portion is provided at the top of the bottom cover, the inner arc surface of the clamping portion is movably clamped on the outer arc surface of the sleeve, and an outer convex end is provided in the middle of the inner wall of one side of the bottom cover, and the upper surface of the outer convex end is abutted and connected with the protruding end of the fixing part.

[0011] Preferably, probes are connected to both sides of the outer arc surface of the bottom cover, and one end of the probe away from the bottom cover is electrically connected to a wire, which extends to the power supply connection of the fan blade.

[0012] Preferably, the outer arc surface of the transmission shaft is movably connected with an assembly fixing cover, and the outer arc surface circumference of the assembly fixing cover is provided with assembly pins, and one side of the assembly pin is fixed with a high-temperature resistant anti-slip rubber sheet by bolts.

[0013] Beneficial effects

[0014] The utility model directly reflects the change of the magnetic flux in the electromagnetic coil in the change of its inductance through the change of the magnetic flux in the electromagnetic coil. The change of the inductance in the electromagnetic coil is accurately detected and analyzed by a special detection circuit and equipment, and the vibration amplitude associated with it is reversed. Because in the entire transmission and induction process, the vibration of the fan is finally converted into a detectable change in the inductance of the electromagnetic coil through the coordinated action of a series of components, thereby providing a reliable basis for accurately judging the vibration condition of the fan, so as to timely discover possible hidden dangers of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a DC fan vibration fault detection device;

[0016] Figure 2 It is a schematic side cross-sectional structural diagram of a DC fan vibration fault detection device;

[0017] Figure 3 This is a schematic diagram of the overall internal structure of a sleeve of a DC fan vibration fault detection device;

[0018] Figure 4 This is a schematic diagram of a sleeve vertical cross-section structure of a DC fan vibration fault detection device;

[0019] Figure 5 The figure is a schematic diagram of the bottom cover tail structure of a DC fan vibration fault detection device.

[0020] In the picture:

[0021] 1. Heat dissipation cover; 2. Fan blades; 3. Drive shaft; 4. Adapter block; 401. Fan-shaped clip; 402. Through hole; 403. Abutment end; 5. Sleeve; 501. Inner curved surface; 6. Connector; 601. Touch end; 7. Fixing part; 701. Protruding end; 8. Magnet; 9. Electromagnetic coil; 10. Bottom cover; 101. Sealing end; 102. Clamping part; 103. Outer protruding end; 11. Probe; 12. Wire; 13. Assembly fixing cover; 14. Assembly pin; 15. High-temperature resistant and non-slip rubber sheet; 16. Spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0023] The utility model provides a DC fan vibration fault detection device, such as Figures 1 to 5As shown, it includes a heat dissipation cover 1, the middle part of the inner arc surface of the heat dissipation cover 1 is movably connected to a fan blade 2 through a rotating shaft, a transmission shaft 3 is fixedly installed on the back of the fan blade 2, and an adapter block 4 is fixedly installed on one end of the transmission shaft 3. Both sides of the outer arc surface of the adapter block 4 are provided with fan-shaped clips 401, and both sides of the outer arc surface of the fan-shaped clips 401 are provided with through holes 402. The two fan-shaped clips 401 are connected through the through holes 402. The outer arc surface of the adapter block 4 is movably sleeved with a sleeve 5, and the back of the adapter block 4 is provided with an abutment end 403 The top of the sleeve 5 is provided with an inner curved surface 501, and the inner curved surface 501 of the sleeve 5 is movably fitted on the inner curved surface of the adapter block 4. One side of the inner curved surface of the sleeve 5 is connected to the transmission shaft 3 together with the adapter block 4. The inner curved surface of the sleeve 5 close to the adapter block 4 is slidably connected with a connecting piece 6, and one end of the connecting piece 6 is provided with a touch end 601. The inner curved surface of the sleeve 5 close to the connecting piece 6 is slidably sleeved with a fixing piece 7. The middle part of the inner curved surface of the fixing piece 7 is provided with a protruding end 701, and the top of the protruding end 701 is a hollow structure. The inner arc surface of the protruding end 701 is movably adapted to the touch end 601 on the connecting member 6, the top of the outer arc surface of the protruding end 701 is sleeved with a magnet 8, and the side of the protruding end 701 close to the magnet 8 is movably sleeved with an electromagnetic coil 9, and one side of the magnet 8 is fitted on the inner top wall of the fixing member 7. The edge of one side of the outer arc surface of the sleeve 5 is sleeved with a bottom cover 10, and a sealing end 101 is provided in the middle of the inner arc surface of the bottom cover 10. The upper surface of the sealing end 101 is fitted and connected to the lower surface of the sleeve 5, and the outer arc surface of the abutting end 403 is sleeved There is a spring 16, which is fixedly fitted with the connecting piece 6. A clamping portion 102 is provided at the top of the bottom cover 10. The inner arc surface of the clamping portion 102 is movably clamped on the outer arc surface of the sleeve 5. An outer convex end 103 is provided in the middle of the inner wall of one side of the bottom cover 10. The upper surface of the outer convex end 103 is abutted and connected with the protruding end 701 of the fixing piece 7. Probes 11 are connected to both sides of the outer arc surface of the bottom cover 10. The end of the probe 11 away from the bottom cover 10 is electrically connected to a wire 12, and the wire 12 extends to the connection power supply of the fan blade 2.

[0024] The adapter block 4 is used to establish a connection with the transmission shaft 3. Specifically, its two fan-shaped clips 401 are clamped on the outer arc surface of the transmission shaft 3 from both sides, and then tightened through the bolts in the through hole 402, so as to achieve a firm clamping of the transmission shaft 3 of the fan blade 2, and thus can effectively receive the mechanical energy generated by the rotation of the fan blade 2.

[0025] The front end of the adapter block 4 is connected to the overall structure of the fan, and its outer arc surface is tightly connected to the sleeve 5. When the fan is running, the adapter block 4 will exert a force on the inner arc surface of the sleeve 5. Once the fan blades 2 or other related components vibrate, the pressure of the transmission shaft 3 on the adapter block 4 will increase. This pressure change causes the spring 16 to be compressed. At the same time, the adapter block 4 will slide along the inner wall of the sleeve 5. During this process, the touch end 601 on the connecting part 6 will come into contact with the protruding end 701 on the fixing part 7 and apply pressure, thereby causing relative displacement between the magnet 8 and the electromagnetic coil 9. Due to the change in their relative positions, the electromagnetic coil 9 The magnetic flux at will also change accordingly. According to the principle of electromagnetic induction, the change of magnetic flux in the electromagnetic coil 9 will be directly reflected in the change of its inductance. Through special detection circuits and equipment, this change of inductance in the electromagnetic coil 9 is accurately detected and analyzed, and the vibration amplitude associated with it is inverted. Because in the entire transmission and induction process, the vibration of the fan is finally converted into a detectable change in the inductance in the electromagnetic coil 9 through the coordinated action of a series of components such as the fan blades 2, transmission shaft 3, adapter block 4, spring 16, connector 6, and fixing part 7, thereby providing a reliable basis for accurately judging the vibration condition of the fan, so as to timely discover possible hidden dangers of fan failure.

[0026] At the same time, the probe 11 is inserted into the interior of the bottom cover 10, and the sensor system is powered on. Subsequently, a multimeter with high precision is used to monitor the output voltage of the proximitor. During this process, the gap between the probe 11 and the side surface is carefully adjusted. When the output voltage of the proximitor is monitored to reach a specific value (to be determined according to the actual equipment requirements and calibration standards), the two fastening nuts of the probe 11 are tightened immediately to achieve precise fixation of the position of the probe 11, thereby ensuring that the entire vibration detection can operate stably and accurately.

[0027] The outer arc surface of the transmission shaft 3 is movably connected with an assembly fixing cover 13. The outer arc surface of the assembly fixing cover 13 is provided with assembly pins 14 on its circumference. A high temperature resistant anti-skid rubber sheet 15 is fixed to one side of the assembly pin 14 by bolts.

[0028] The four assembly pins 14 provided at the bottom end of the assembly fixing cover 13 are tightly fitted on the engine casing. After ensuring complete fit, they are firmly fixed with bolts. A high-temperature resistant and non-slip rubber sheet 15 is installed on the bottom surface of the assembly pins 14. It can effectively absorb and slow down the vibration generated during the operation of the engine and prevent the vibration from being transmitted to the outside of the device. At the same time, its anti-slip performance can also ensure that the device is installed more firmly on the engine casing, avoiding displacement or loosening due to vibration or other external force factors during the operation of the engine, thereby ensuring the stability and reliability of the operation of the entire device.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A DC fan vibration fault detection device, comprising a heat dissipation cover (1), characterized in that: The middle part of the inner arc surface of the heat dissipation cover (1) is movably connected to a fan blade (2) through a rotating shaft, a transmission shaft (3) is fixedly installed on the back of the fan blade (2), and an adapter block (4) is fixedly installed on one end of the transmission shaft (3). Both sides of the outer arc surface of the adapter block (4) are provided with fan-shaped clips (401), and both sides of the outer arc surface of the fan-shaped clips (401) are provided with through holes (402). The two fan-shaped clips (401) are connected to each other through the through holes (402). The outer arc surface of the adapter block (4) is movably sleeved with a sleeve (5), and the back of the adapter block (4) is provided with an abutting end (403). The top of the sleeve (5) is provided with an inner curved surface (501), and the inner curved surface (501) of the sleeve (5) is movably fitted on the inner curved surface of the adapter block (4). One side of the inner curved surface of the sleeve (5) and the adapter block (4) are connected to the transmission shaft (3).

2. A DC fan vibration fault detection device according to claim 1, characterized in that: A connecting piece (6) is slidably engaged with the inner arc surface of the sleeve (5) on one side close to the adapter block (4), and a contact end (601) is provided at one end of the connecting piece (6). A fixing piece (7) is slidably engaged with the inner arc surface of the sleeve (5) on one side close to the connecting piece (6), and a protruding end (701) is provided in the middle of the inner arc surface of the fixing piece (7).

3. A DC fan vibration fault detection device according to claim 2, characterized in that: The top of the protruding end (701) is a hollow structure, the inner arc surface of the protruding end (701) is movably adapted to the touch end (601) on the connecting member (6), the top of the outer arc surface of the protruding end (701) is sleeved with a magnet (8), and the side of the protruding end (701) close to the magnet (8) is movably sleeved with an electromagnetic coil (9).

4. A DC fan vibration fault detection device according to claim 3, characterized in that: One side of the magnet (8) is fitted on the inner top wall of the fixing member (7); a bottom cover (10) is sleeved on one edge of the outer arc surface of the sleeve (5); a sealing end (101) is provided in the middle of the inner arc surface of the bottom cover (10); the upper surface of the sealing end (101) is fitted and connected to the lower surface of the sleeve (5); a spring (16) is sleeved on the outer arc surface of the abutting end (403); and the spring (16) is fixedly fitted with the connecting member (6).

5. A DC fan vibration fault detection device according to claim 4, characterized in that: The top end of the bottom cover (10) is provided with a clamping portion (102), the inner arc surface of the clamping portion (102) is movably clamped on the outer arc surface of the sleeve (5), and the middle part of the inner wall of one side of the bottom cover (10) is provided with an outer convex end (103), and the upper surface of the outer convex end (103) is abutted and connected with the protruding end (701) of the fixing member (7).

6. A DC fan vibration fault detection device according to claim 5, characterized in that: Both sides of the outer arc surface of the bottom cover (10) are connected to probes (11), and one end of the probe (11) away from the bottom cover (10) is electrically connected to a wire (12), and the wire (12) extends to the power supply connection of the fan blade (2).

7. A DC fan vibration fault detection device according to claim 1, characterized in that: The outer arc surface of the transmission shaft (3) is movably engaged with an assembly fixing cover (13), and the outer arc surface circumference of the assembly fixing cover (13) is provided with assembly pins (14), and one side of the assembly pins (14) is fixed with a high-temperature resistant anti-skid rubber sheet (15) by means of bolts.

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