Fan bolt looseness monitoring device

Abstract

The invention provides a fan bolt looseness monitoring device. The fan bolt looseness monitoring device comprises a bolt, a rapid installation assembly, a monitoring assembly, an early warning display assembly, a self-locking assembly and a remote reminding assembly, the rapid installation assembly is used for rapidly installing the monitoring device, the monitoring assembly is used for detecting the displacement condition of the bolt, and the early warning display assembly is used for displaying the connection state of the bolt. The self-locking assembly is used for locking the state of the early warning display assembly, the remote reminding assembly is arranged on the early warning display assembly and used for remotely reminding the state of the bolt, the fan bolt looseness monitoring device achieves real-time monitoring of the bolt looseness condition through arrangement of all the structures, the accident risk is reduced, meanwhile, the safety of the fan bolt looseness monitoring device is improved, and meanwhile the safety of the fan bolt looseness monitoring device is improved. And omission risks caused by temporary returning of the bolts are avoided through the self-locking assembly, so that the operation and maintenance efficiency of the bolts is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bolt loosening monitoring, and in particular to a wind turbine bolt loosening monitoring device. BACKGROUND

[0002] With the rapid development of renewable energy, wind power as a clean and renewable energy source is increasingly important in the energy structure in China. During long-time operation of a wind turbine, bolts may be loosened due to vibration, which may reduce the stability of the equipment and even cause accidents.

[0003] Therefore, wind turbine bolt loosening monitoring is a key link for ensuring safe operation of the wind turbine, and the core is to use a sensor to monitor physical state changes such as displacement and vibration of bolt connection in real time, so as to identify bolt loosening risks in time.

[0004] However, during bolt loosening monitoring by the sensor, the bolt may be temporarily reset due to vibration, at which time the warning signal from the sensor is interrupted, which may cause maintenance personnel to misjudge that the fault has been eliminated, and thus miss the loosened bolt and increase the risk of accidents. SUMMARY

[0005] The application provides a wind turbine bolt loosening monitoring device to solve the technical problems in the background.

[0006] The application provides a wind turbine bolt loosening monitoring device, which comprises a bolt, a quick mounting assembly, a monitoring assembly, a warning display assembly, a self-locking assembly and a remote reminding assembly. The quick mounting assembly is arranged on a flange of the wind turbine, and is used for quickly mounting the monitoring device. The monitoring assembly is arranged on the quick mounting assembly and connected with the bolt. The monitoring assembly is used for detecting displacement of the bolt. The warning display assembly is arranged on the monitoring assembly and is used for displaying a connection state of the bolt and the flange. The self-locking assembly is arranged on the monitoring assembly and connected with the warning display assembly. The self-locking assembly is used for locking a state of the warning display assembly. The remote reminding assembly is arranged on the warning display assembly and is used for remotely reminding the state of the bolt.

[0007] Optionally, the quick mounting assembly comprises a mounting base, a mounting table, a positioning buckle, a first spring and a winged bolt, the mounting base is fixedly arranged on the fan flange, the mounting base is provided with a positioning groove and a positioning hole, the positioning groove is provided with two, the two positioning grooves are respectively arranged on the two sides of the mounting base, the positioning hole is provided with two, the two positioning holes are respectively arranged on the two opposite side walls of the mounting base, the mounting table is arranged at the top end of the mounting base, the bottom end of the mounting table is provided with a positioning table, the positioning table is inserted into the positioning groove, the positioning buckle is provided with two, the two positioning buckles are respectively located at the two ends of the mounting table and are hinged with the mounting table, the positioning buckle is matched with the positioning hole, the first spring is provided with two, the two first springs correspond to the two positioning buckles, one end of the first spring is fixedly connected with the mounting table, and the other end is fixedly connected with the positioning buckle, the winged bolt is provided with a plurality of, the mounting table and the mounting base are fixed through the winged bolt.

[0008] Optionally, the monitoring assembly comprises a fixing sleeve, a displacement sliding sleeve and a second spring, the fixing sleeve is fixedly arranged on the mounting table, the displacement sliding sleeve is slidingly arranged in the fixing sleeve and abuts against the bolt, the second spring is provided with a plurality of, the plurality of second springs are all arranged in the fixing sleeve, one end of the second spring is fixedly connected with the fixing sleeve, and the other end is fixedly connected with the displacement sliding sleeve.

[0009] Optionally, two sliding grooves are arranged on the inner side wall of the fixing sleeve, two bosses are fixedly arranged on the outer side wall of the displacement sliding sleeve, the two bosses correspond to the two sliding grooves, and the bosses are slidingly arranged in the sliding grooves.

[0010] Optionally, the early warning display assembly comprises a mounting bracket, a driving shaft, a driven shaft, a driving gear, a driven gear, a transmission rod, an early warning plate, a baffle and a torsional spring, the mounting bracket is fixedly arranged at the top end of the fixing sleeve, the driving shaft and the driven shaft are both rotationally arranged on the mounting bracket, the driving gear is coaxially fixedly arranged on the driving shaft, the driven gear is coaxially fixedly arranged on the driven shaft, the driving gear is engaged with the driven gear, one end of the transmission rod is hinged with the displacement sliding sleeve, and the other end is eccentrically hinged with the driving gear, the early warning plate is coaxially arranged at the end of the driven shaft away from the driven gear and is fixedly connected with the driven shaft, the baffle is fixedly arranged on the mounting bracket, the baffle abuts against the early warning plate, a display window is arranged on the baffle, and the torsional spring is sleeved on the driven shaft, one end of the torsional spring is fixedly connected with the mounting bracket, and the other end is fixedly connected with the early warning plate.

[0011] Optionally, a locking groove is formed in the early warning plate, and the self-locking assembly comprises a rotating shaft, a self-locking claw, a trigger rod, a self-locking spring and an unlocking part, the rotating shaft is fixedly arranged on the mounting bracket, the self-locking claw is rotatably arranged on the rotating shaft, one end of the self-locking claw is matched with the locking groove, one end of the trigger rod is hingedly connected with the displacement sleeve, and the other end is abutted with one end of the self-locking claw away from the early warning plate, the middle part of the trigger rod is rotatably connected with the mounting bracket, one end of the self-locking spring is fixedly connected with the mounting bracket, and the other end is fixedly connected with the self-locking claw, and the unlocking part is arranged on the mounting bracket and used for disconnecting the self-locking claw and the early warning plate.

[0012] Optionally, the unlocking part comprises a guide sleeve, a connecting rod, a jacking rod, an unlocking rod and an unlocking spring, the guide sleeve is fixedly arranged on the mounting bracket, the connecting rod is slidably arranged in the guide sleeve, the jacking rod is fixedly arranged at one end of the connecting rod close to the self-locking claw, the unlocking rod is fixedly arranged at the other end of the connecting rod away from the jacking rod, the unlocking spring is sleeved on the connecting rod, one end of the unlocking spring is fixedly connected with the unlocking rod, and the other end is fixedly connected with the guide sleeve.

[0013] Optionally, a one-way clutch is arranged on the driven shaft, and the one-way clutch is located between the driven shaft and the driven gear.

[0014] Optionally, the remote reminding assembly comprises position sensors, a battery and a wireless transmitter, the position sensors are provided in two, both of the position sensors are fixedly arranged on the early warning plate, the battery is fixedly arranged on the early warning plate and electrically connected with the position sensors, the wireless transmitter is fixedly arranged on the early warning plate and electrically connected with the battery, and the wireless transmitter is electrically connected with the position sensors.

[0015] The beneficial effects of the present application are as follows: The bolt loosening monitoring device for the fan comprises a bolt, a quick mounting assembly, a monitoring assembly, an early warning display assembly, a self-locking assembly and a remote reminding assembly, the quick mounting assembly is used for quickly mounting the monitoring device, the monitoring assembly is used for detecting the displacement condition of the bolt, the early warning display assembly is used for displaying the connection state of the bolt, the self-locking assembly is used for locking the state of the early warning display assembly, the remote reminding assembly is arranged on the early warning display assembly and used for remotely reminding the state of the bolt, the bolt loosening monitoring device for the fan realizes real-time monitoring of the bolt loosening condition through the arrangement of various structures, reduces the accident risk, meanwhile, the self-locking assembly avoids the missing risk caused by the temporary homing of the bolt, thereby greatly improving the operation and maintenance efficiency of the bolt. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0017] Figure 1 is a structural schematic diagram of a fan bolt loosening monitoring device provided by the present application; Figure 2 is Figure 1 an enlarged view of A in Figure 3 is a structural schematic diagram intended to illustrate a quick mounting assembly; Figure 4 is a structural schematic diagram intended to illustrate a pre-warning plate; Figure 5 is Figure 4 an enlarged view of B in Figure 6 is a structural schematic diagram intended to illustrate an unlocking part; Figure 7 is a structural schematic diagram intended to illustrate a remote reminding assembly.

[0018] Explanation of reference signs: 1, bolt; 2, quick mounting assembly; 21, mounting base; 211, positioning groove; 212, positioning hole; 22, mounting table; 23, positioning buckle; 24, first spring; 25, butterfly bolt; 26, positioning table; 3, monitoring assembly; 31, fixing sleeve; 32, displacement sliding sleeve; 33, second spring; 34, boss; 4, pre-warning display assembly; 40, mounting support; 41, driving shaft; 42, driven shaft; 43, driving gear; 44, driven gear; 45, transmission rod; 46, pre-warning plate; 461, locking groove; 47, baffle; 48, torsional spring; 49, one-way clutch; 5, self-locking assembly; 51, rotating shaft; 52, self-locking claw; 53, trigger rod; 54, self-locking spring; 55, unlocking part; 551, guide sleeve; 552, connecting rod; 553, ejector rod; 554, unlocking rod; 555, unlocking spring; 6, remote reminding assembly; 61, position sensor; 62, battery; 63, wireless transmitter. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] Reference herein to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it referring to a particular alternative embodiment or set of alternative embodiments, to the exclusion of other embodiments. It is explicitly contemplated that embodiments described herein can be combined with other embodiments.

[0021] Please refer to Figures 1 to 7 The fan bolt loosening monitoring device comprises a bolt 1, a quick installation assembly 2, a monitoring assembly 3, a pre-warning display assembly 4, a self-locking assembly 5 and a remote reminding assembly 6. The quick installation assembly 2 is arranged on a fan flange, and is used for quickly installing the monitoring device. The monitoring assembly 3 is arranged on the quick installation assembly 2 and connected with the bolt 1. The monitoring assembly 3 is used for detecting the displacement of the bolt 1. The pre-warning display assembly 4 is arranged on the monitoring assembly 3 and is used for displaying the connection state of the bolt 1 and the fan flange. The self-locking assembly 5 is arranged on the monitoring assembly 3 and connected with the pre-warning display assembly 4. The self-locking assembly 5 is used for locking the state of the pre-warning display assembly 4. The remote reminding assembly 6 is arranged on the pre-warning display assembly 4 and is used for remotely reminding the state of the bolt 1. When the bolt 1 loosens, the monitoring assembly 3 detects the displacement of the bolt 1 in real time, and the pre-warning display assembly 4 directly presents different states of the bolt 1, thereby providing visual judgment basis for on-site maintenance personnel without the aid of tools. When the bolt 1 loosens seriously and there is a safety risk, immediate maintenance is needed. The self-locking assembly 5 locks the state of the pre-warning display assembly 4 at this time, so that the pre-warning display assembly 4 will not interrupt the pre-warning signal due to temporary resetting of the bolt 1, thereby avoiding the phenomenon of missing report. Meanwhile, the remote reminding assembly 6 continuously sends the loosening state of the bolt 1 to the operation and maintenance personnel, so that the operation and maintenance personnel can timely maintain and eliminate the risk of accidents.

[0022] In the embodiment, the quick installation assembly 2 comprises an installation base 21, an installation table 22, a positioning buckle 23, a first spring 24 and a butterfly bolt 25, the installation base 21 is fixedly arranged on the fan flange, the installation base 21 is provided with a positioning groove 211 and a positioning hole 212, the positioning groove 211 is provided with two, the two positioning grooves 211 are respectively arranged on the two sides of the installation base 21, the positioning hole 212 is provided with two, the two positioning holes 212 are respectively arranged on the opposite two side walls of the installation base 21, the installation table 22 is arranged at the top end of the installation base 21, the bottom end of the installation table 22 is provided with a positioning table 26, the positioning table 26 is inserted into the positioning groove 211, the positioning buckle 23 is provided with two, the two positioning buckles 23 are respectively located at the two ends of the installation table 22, and are hingedly connected with the installation table 22, the positioning buckle 23 is matched with the positioning hole 212, the first spring 24 is provided with two, the two first springs 24 correspond to the two positioning buckles 23, one end of the first spring 24 is fixedly connected with the installation table 22, and the other end is fixedly connected with the positioning buckle 23, the butterfly bolt 25 is provided with a plurality of, the installation table 22 and the installation base 21 are fixed through the butterfly bolt 25; Wherein, the installation base 21 is fixedly installed on the fan flange, the maintenance personnel aligns the positioning table 26 at the bottom end of the installation table 22 with the positioning groove 211 on the installation base 21, when the positioning table 26 is inserted into the positioning groove 211, the positioning buckle 23 is just aligned with the positioning hole 212, the first spring 24 rebounds, drives the positioning buckle 23 to be clamped into the positioning hole 212, and the preliminary positioning is completed, at this time, the device can be held by one hand, and there is no risk of falling, then the maintenance personnel manually twists the butterfly bolt 25 on the installation table 22, the screw rod of the butterfly bolt 25 is screwed into the locking hole of the installation base 21, so that the quick installation of the monitoring device is realized.

[0023] In the embodiment, the monitoring assembly 3 comprises a fixing sleeve 31, a displacement sliding sleeve 32 and a second spring 33, the fixing sleeve 31 is fixedly arranged on the installation table 22, the displacement sliding sleeve 32 is slidingly arranged in the fixing sleeve 31 and abuts against the bolt 1, the second spring 33 is provided with a plurality of, the plurality of second springs 33 are all arranged in the fixing sleeve 31, one end of the second spring 33 is fixedly connected with the fixing sleeve 31, and the other end is fixedly connected with the displacement sliding sleeve 32; In the embodiment, two sliding grooves are arranged on the inner side wall of the fixing sleeve 31, two bosses 34 are fixedly arranged on the outer side wall of the displacement sliding sleeve 32, the two bosses 34 correspond to the two sliding grooves, and the boss 34 is slidingly arranged in the sliding groove; When the bolt 1 is not loose, the second spring 33 pulls the displacement sleeve 32 upward, and the bottom of the displacement sleeve 32 is in close abutment with the top end of the head of the bolt 1. At this time, the bolt 1 and the displacement sleeve 32 remain stationary. When the bolt 1 is loose and displaced, the bolt 1 is axially loose, and the end of the bolt 1 pushes the displacement sleeve 32 to move away from the fan flange. The displacement sleeve 32 always abuts against the end of the bolt 1 under the action of the pulling force of the second spring 33, so that the abutment following displacement transmission is realized, and the maintenance personnel can directly and clearly observe the displacement of the bolt. The guide sliding groove on the fixed sleeve 31 enables the displacement sleeve 32 to only slide axially, thereby avoiding radial deviation of the displacement sleeve 32 and further causing abutment failure.

[0024] In the embodiment, the pre-warning display assembly 4 comprises a mounting bracket 40, a driving shaft 41, a driven shaft 42, a driving gear 43, a driven gear 44, a transmission rod 45, a pre-warning plate 46, a baffle 47 and a torsional spring 48. The mounting bracket 40 is fixedly arranged at the top end of the fixed sleeve 31. The driving shaft 41 and the driven shaft 42 are both rotationally arranged on the mounting bracket 40. The driving gear 43 is coaxially and fixedly arranged on the driving shaft 41. The driven gear 44 is coaxially and fixedly arranged on the driven shaft 42. The driving gear 43 is in mesh with the driven gear 44. One end of the transmission rod 45 is hingedly connected with the displacement sleeve 32, and the other end is eccentrically hingedly connected with the driving gear 43. The pre-warning plate 46 is coaxially arranged at the end of the driven shaft 42 away from the driven gear 44, and is fixedly connected with the driven shaft 42. The baffle 47 is fixedly arranged on the mounting bracket 40. The baffle 47 is in abutment with the pre-warning plate 46. A display window is formed in the baffle 47. The torsional spring 48 is sleeved on the driven shaft 42. One end of the torsional spring 48 is fixedly connected with the mounting bracket 40, and the other end is fixedly connected with the pre-warning plate 46. The pre-warning plate 46 adopts a red, yellow and green three-color sector structure. When the displacement sleeve 32 moves away from the fan flange, the transmission rod 45 moves following the displacement sleeve 31. The transmission rod 45 drives the driving gear 43 to rotate. The driving gear 43 is in mesh with the driven gear 44. The driving gear 43 drives the driven gear 44 to rotate. The driven shaft 42 rotates following the driven gear 44. The pre-warning plate 46 is coaxially and fixedly arranged on the driven shaft 42. The pre-warning plate 46 rotates following the driven shaft 42. A sector display window is formed in the baffle 47. The green area of the pre-warning plate 46 is aligned with the display window. At this time, the bolt is not loose. The yellow area is aligned with the display window. At this time, it is a first-level pre-warning. The red area is aligned with the display window, which is a second-level pre-warning. Therefore, the maintenance personnel can more directly understand the state of the bolt 1.

[0025] In the embodiment, the pre-warning plate 46 is provided with a locking groove 461, the self-locking assembly 5 comprises a rotating shaft 51, a self-locking claw 52, a trigger lever 53, a self-locking spring 54 and an unlocking part 55, the rotating shaft 51 is fixedly arranged on the mounting bracket 40, the self-locking claw 52 is rotatably arranged on the rotating shaft 51, one end of the self-locking claw 52 is matched with the locking groove 461, one end of the trigger lever 53 is hingedly connected with the displacement sleeve 32, and the other end is abutted with one end of the self-locking claw 52 away from the pre-warning plate 46, the middle part of the trigger lever 53 is rotatably connected with the mounting bracket 40, one end of the self-locking spring 54 is fixedly connected with the mounting bracket 40, and the other end is fixedly connected with the self-locking claw 52, and the unlocking part 55 is arranged on the mounting bracket 40 and is used for disconnecting the self-locking claw 52 and the pre-warning plate 46; Wherein, the bolt 1 is loose, the displacement sleeve 32 moves, the trigger lever 53 moves with the displacement sleeve 32, when the bolt 1 is seriously loose, the displacement sleeve 32 moves to the second pre-warning position, the end of the trigger lever 53 away from the displacement sleeve 32 is abutted with the self-locking claw 52, the trigger lever 53 pushes the self-locking claw 52 to rotate, the locking groove 461 on the pre-warning plate 46 rotates to the side close to the self-locking claw 52, the self-locking claw 52 is inserted into the locking groove 461, at this time, even if the bolt 1 is temporarily reset under the action of vibration, the trigger lever 53 reversely rotates, the trigger lever 53 is separated from the self-locking claw 52, but the wedge-shaped locking block of the self-locking claw 52 is always clamped in the locking groove 461 under the reaction force of the locking groove 461, so that the pre-warning plate 46 cannot reversely rotate, the red area is always exposed at the display window, thereby avoiding the missed alarm due to the interruption of the alarm.

[0026] In the embodiment, the unlocking part 55 comprises a guide sleeve 551, a connecting rod 552, a top rod 553, an unlocking lever 554 and an unlocking spring 555, the guide sleeve 551 is fixedly arranged on the mounting bracket 40, the connecting rod 552 is slidably arranged in the guide sleeve 551, the top rod 553 is fixedly arranged at one end of the connecting rod 552 close to the self-locking claw 52, the unlocking lever 554 is fixedly arranged at the other end of the connecting rod 552 away from the top rod 553, and the unlocking spring 555 is sleeved on the connecting rod 552, one end of the unlocking spring 555 is fixedly connected with the unlocking lever 554, and the other end is fixedly connected with the guide sleeve 551; Wherein, when the maintenance personnel complete the maintenance, the unlocking lever 554 is pushed, the unlocking lever 554 drives the connecting rod 552 to move, the connecting rod 552 drives the top rod 553 to move, after the top rod 553 is abutted with the self-locking claw 52, the top rod 553 continues to move, the top rod 553 drives the self-locking claw 52 to rotate, so that the self-locking claw 52 is disconnected with the pre-warning plate 46.

[0027] In the embodiment, the driven shaft 42 is provided with a one-way clutch 49, which is located between the driven shaft 42 and the driven gear 44. When the bolt 1 is temporarily returned, the displacement sleeve 32 moves towards the fan flange under the action of the second spring 33, the driving rod 45 pulls the driving gear 43 to rotate reversely, the driven gear 44 rotates reversely following the driving gear 43, the early warning plate 46 is locked by the self-locking claw 52, the driven shaft 42 is fixed, and the one-way clutch 49 makes the driven gear 44 idle, so that the driven gear 44 idling does not generate resistance to the driven shaft 42, thereby enabling the displacement sleeve 32 to move without resistance and always abutting against the end of the bolt 1.

[0028] In the embodiment, the remote reminding assembly 6 comprises two position sensors 61, a battery 62 and a wireless transmitter 63, the two position sensors 61 are fixedly arranged on the early warning plate 46, the battery 62 is fixedly arranged on the early warning plate 46 and electrically connected with the two position sensors 61, and the wireless transmitter 63 is fixedly arranged on the early warning plate 46 and electrically connected with the battery 62. When the early warning plate 46 rotates to the yellow area and aligns with the display window on the baffle 47, the position sensor 61 sends a first early warning signal, and the wireless transmitter 63 transmits the received signal to the maintenance personnel, reminding the maintenance personnel that the bolt 1 is loose, and when the red area of the early warning plate 46 aligns with the display window, the position sensor 61 sends a second early warning signal, the self-locking claw 52 locks the early warning plate 46, and the wireless transmitter 63 continuously transmits the received signal, thereby reminding the maintenance personnel that the bolt 1 is seriously loose and needs to be repaired as soon as possible.

[0029] The bolt loosening monitoring device for a fan comprises a bolt 1, a quick installation assembly 2, a monitoring assembly 3, an early warning display assembly 4, a self-locking assembly 5 and a remote reminding assembly 6, the quick installation assembly 2 is used for quickly installing the monitoring device, the monitoring assembly 3 is used for detecting the displacement of the bolt 1, the early warning display assembly 4 is used for displaying the connection state of the bolt 1, the self-locking assembly 5 is used for locking the state of the early warning display assembly 4, the remote reminding assembly 6 is arranged on the early warning display assembly 4 and is used for remotely reminding the state of the bolt 1, and the bolt loosening monitoring device for a fan realizes real-time monitoring of the loosening state of the bolt 1 through the arrangement of various structures, reduces the risk of accidents, and simultaneously, the self-locking assembly 5 avoids the omission risk caused by the temporary return of the bolt 1, thereby greatly improving the operation and maintenance efficiency of the bolt 1.

[0030] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A fan bolt loosening monitoring device, characterized by, Comprising a bolt; a quick installation assembly arranged on a fan flange, the quick installation assembly being used for quick installation of a monitoring device; a monitoring assembly arranged on the quick installation assembly and connected with the bolt, the monitoring assembly being used for detecting displacement of the bolt; a pre-warning display assembly arranged on the monitoring assembly and used for displaying a connection state of the bolt and the fan flange; a self-locking assembly arranged on the monitoring assembly and connected with the pre-warning display assembly, the self-locking assembly being used for locking a state of the pre-warning display assembly; a remote reminding assembly arranged on the pre-warning display assembly and used for remotely reminding a state of the bolt.

2. A fan bolt loosening monitoring device according to claim 1, characterised in that, The quick installation assembly comprises an installation base, an installation table, positioning buckles, first springs and butterfly bolts, the installation base is fixedly arranged on a fan flange, the installation base is provided with positioning grooves and positioning holes, the installation base is provided with two positioning grooves, the two positioning grooves are arranged on two sides of the installation base respectively, the installation base is provided with two positioning holes, the two positioning holes are arranged on two opposite side walls of the installation base respectively, the installation table is arranged at the top end of the installation base, the installation table is provided with a positioning table at the bottom end, the positioning table is inserted into the positioning groove, the positioning buckles are arranged at two ends of the installation table respectively and are hinged with the installation table, the positioning buckles are matched with the positioning holes, the first springs are arranged in pairs, the first springs are in one-to-one correspondence with the positioning buckles, one end of the first spring is fixedly connected with the installation table and the other end is fixedly connected with the positioning buckle, and the butterfly bolts are arranged in multiple numbers, the installation table and the installation base are fixed through the butterfly bolts.

3. A fan bolt loosening monitoring device according to claim 2, wherein The monitoring assembly comprises a fixing sleeve, a displacement sliding sleeve and second springs, the fixing sleeve is fixedly arranged on the installation table, the displacement sliding sleeve is slidingly arranged in the fixing sleeve and abuts against the bolt, and the second springs are arranged in multiple numbers, the second springs are arranged in the fixing sleeve, one end of the second spring is fixedly connected with the fixing sleeve and the other end is fixedly connected with the displacement sliding sleeve.

4. A fan bolt loosening monitoring device according to claim 3, wherein Two sliding grooves are arranged on the inner side wall of the fixing sleeve, two protrusions are fixedly arranged on the outer side wall of the displacement sliding sleeve, the protrusions are in one-to-one correspondence with the sliding grooves, and the protrusions are slidingly arranged in the sliding grooves.

5. A fan bolt loosening monitoring device according to claim 3, wherein The early warning display component includes a mounting bracket, a driving shaft, a driven shaft, a driving gear, a driven gear, a transmission rod, an early warning plate, a baffle and a torsional spring, the mounting bracket is fixedly arranged at the top end of the fixing sleeve, the driving shaft and the driven shaft are both rotationally arranged on the mounting bracket, the driving gear is coaxially fixedly arranged on the driving shaft, the driven gear is coaxially fixedly arranged on the driven shaft, the driving gear is engaged with the driven gear, one end of the transmission rod is hingedly connected with the displacement sleeve, the other end is eccentrically hingedly connected with the driving gear, the early warning plate is coaxially arranged on the end of the driven shaft away from the driven gear, and is fixedly connected with the driven shaft, the baffle is fixedly arranged on the mounting bracket, the baffle is abutted with the early warning plate, a display window is formed in the baffle, and the torsional spring is sleeved on the driven shaft, one end of the torsional spring is fixedly connected with the mounting bracket, and the other end is fixedly connected with the early warning plate.

6. A fan bolt loosening monitoring device according to claim 5, wherein A locking groove is formed in the early warning plate, the self-locking component includes a rotating shaft, a self-locking claw, a trigger rod, a self-locking spring and an unlocking part, the rotating shaft is fixedly arranged on the mounting bracket, the self-locking claw is rotationally arranged on the rotating shaft, one end of the self-locking claw is matched with the locking groove, one end of the trigger rod is hingedly connected with the displacement sleeve, and the other end is abutted with the end of the self-locking claw away from the early warning plate, the middle part of the trigger rod is rotationally connected with the mounting bracket, one end of the self-locking spring is fixedly connected with the mounting bracket, and the other end is fixedly connected with the self-locking claw, and the unlocking part is arranged on the mounting bracket and is used for disconnecting the connection between the self-locking claw and the early warning plate.

7. A fan bolt loosening monitoring device according to claim 6, wherein The unlocking part includes a guide sleeve, an unlocking rod, a connecting rod, a jacking rod and an unlocking spring, the guide sleeve is fixedly arranged on the mounting bracket, the connecting rod is slidingly arranged in the guide sleeve, the jacking rod is fixedly arranged at the end of the connecting rod close to the self-locking claw, the unlocking rod is fixedly arranged at the end of the connecting rod away from the jacking rod, the unlocking spring is sleeved on the connecting rod, one end of the unlocking spring is fixedly connected with the unlocking rod, and the other end is fixedly connected with the guide sleeve.

8. A fan bolt loosening monitoring device according to claim 7, wherein A one-way clutch is arranged on the driven shaft, and the one-way clutch is located between the driven shaft and the driven gear.

9. A fan bolt loosening monitoring device according to claim 8, wherein The remote reminding component includes position sensors, a battery and a wireless transmitter, the position sensors are provided in two, the two position sensors are both fixedly arranged on the early warning plate, the battery is fixedly arranged on the early warning plate and is electrically connected with the two position sensors, the wireless transmitter is fixedly arranged on the early warning plate and is electrically connected with the battery, and the wireless transmitter is electrically connected with the two position sensors.

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