CN115307910A

CN115307910A - Fault monitoring device and monitoring method for simulating gear of rotating unit

Info

Publication number: CN115307910A
Application number: CN202210943531.9A
Authority: CN
Inventors: 林水泉; 张清华; 吕运容; 孙国玺; 朱冠华; 雷高伟; 邵龙秋; 袁鹏慧
Original assignee: Guangdong University of Petrochemical Technology
Current assignee: Guangdong University of Petrochemical Technology
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-11-08

Abstract

The invention discloses a fault monitoring device for simulating a gear of a rotating unit, which comprises a simulation device, a monitoring device connected with the simulation device and a controller connected with the monitoring device; the simulation device comprises an axial loading device, a radial loading device, a gear box and a gear set which is rotationally connected in the gear box, wherein the axial loading device is used for applying axial force to the side surface of a gear in the gear set, and the radial loading device is used for applying radial force to the gear set; the monitoring device is used for monitoring the temperature of lubricating oil in the gearbox and a vibration signal of the gear set; the controller is used for obtaining the state of the gear set according to the monitoring result of the monitoring device and controlling the gear set to rotate. The diagnostic device that this application set up, simple structure, convenient to use through the temperature of monitoring devices monitoring lubricating oil and the vibration signal of gear train, can acquire the state of gear train, the monitoring of effectual realization gear train middle gear state.

Description

Fault monitoring device and monitoring method for simulating gear of rotating unit

Technical Field

The invention relates to the technical field of fault diagnosis of gears of rotating units, in particular to a fault monitoring device and a fault monitoring method for simulating gears of rotating units.

Background

With the development of industrial technology, the rotating unit has wide application in different fields and plays a critical role. Due to the long-period operation of the rotary machine set, various faults can be avoided, and the machine halt, the production reduction of enterprises and even safety accidents can be caused. However, according to the analysis of relevant data, the gear fault accounts for 60% of the total fault of the gearbox of the unit, and the importance of the gear in the rotating unit is seen. Therefore, the research on the gear in the directions of monitoring the life of the whole period, fault diagnosis, future development trend and the like is significant, so that the faults of the rotating unit are reduced, the working efficiency of equipment is improved, and the risk of safety accidents is reduced.

Disclosure of Invention

The invention aims to provide a fault monitoring device and a fault monitoring method for a gear of a simulated rotating unit, which aim to solve the problem of insufficient monitoring of the gear in the rotating unit in the prior art.

In a first aspect, the present invention discloses a fault monitoring device for simulating a gear of a rotating machine set, comprising:

the simulation device comprises an axial loading device, a radial loading device, a gear box and a gear set which is rotationally connected in the gear box, wherein the axial loading device is used for applying axial force to the side surface of a gear in the gear set, and the radial loading device is used for applying radial force to the gear set;

the monitoring device is connected with the simulation device and is used for monitoring the temperature of lubricating oil in the gear box and a vibration signal of the gear set;

and the controller is connected with the monitoring device and used for acquiring the state of the gear set according to the monitoring result of the monitoring device and controlling the gear set to rotate.

Further, the gear set comprises a first gear and a second gear which are meshed with each other;

the axial loading device comprises a first axial loading device arranged on one side of the first gear, and a second axial loading device and a third axial loading device which are respectively arranged on two side surfaces of the second gear;

the first axial loading device, the second axial loading device and the third axial loading device have the same structure and respectively comprise a first magnet for providing axial loading force.

Further, first axial loading device still includes the sleeve of cup jointing in first gear shaft periphery, telescopic periphery sliding connection has the sliding sleeve, the end of sleeve periphery is equipped with the spout, sliding connection has spacing articulated seat in the spout, the one end of first magnet with spacing articulated seat is connected, the intermediate part of first magnet passes through the periphery articulated connection of connecting rod and sliding sleeve.

Furthermore, the first axial loading device, the second axial loading device and the third axial loading device further comprise air cylinders in signal connection with the controller, and connectors are arranged at output ends of the air cylinders and connected with the sliding sleeves through at least two sliding rods.

Further, the gearbox comprises a box body and a box cover which is detachably connected to the box body;

the radial loading device comprises a first radial loading device for loading the first gear in the radial direction and a second radial loading device for loading the second gear in the radial direction.

Furthermore, the first radial loading device and the second radial loading device have the same structure and respectively comprise an electric push rod connected above the box cover and a magnet folding and unfolding mechanism positioned below the box cover;

the magnet folding and unfolding mechanism comprises a storage sleeve connected to the bottom surface of the box cover and a connecting shaft located in the storage sleeve, the head end of the connecting shaft is connected with the output end of the electric push rod, the tail end of the connecting shaft is hinged to one end of the second magnet, and the connecting shaft is further connected with the middle portion of the second magnet through a second spring.

Further, the monitoring device includes a temperature sensor disposed inside the gearbox and an acceleration sensor disposed outside the gearbox.

Further, the gear box further comprises a motor connected with the first gear shaft or the second gear shaft, and the motor is electrically connected with the controller.

In a second aspect, the invention discloses a monitoring method of a fault monitoring device for a gear of a simulated rotating machine set based on the first aspect, which comprises the following steps:

controlling the gear set to rotate;

controlling the axial loading device to apply axial force to the gear set and/or controlling the radial loading device to apply radial force to the gear set;

acquiring the temperature of lubricating oil in a gear box and a vibration signal of a gear set;

and acquiring the use state of the gear set according to the temperature of the lubricating oil and the vibration signal of the gear set.

Further, the controlling the axial loading device to apply the axial force to the gear set includes:

controlling a first magnet in the first axial loading device to unfold and move to one side close to the first gear; or

Controlling a first magnet in the second axial loading device to unfold and move to one side close to the second gear; or

Controlling a first magnet in a third axial loading device to unfold and move to one side close to a second gear; or

Controlling a first magnet in the first axial loading device to unfold and move to one side close to the first gear, and controlling a first magnet in the second axial loading device to unfold and move to one side close to the second gear; or

And controlling the first magnet in the first axial loading device to unfold and move to one side close to the first gear, and controlling the first magnet in the third axial loading device to unfold and move to one side close to the second gear.

According to the technical scheme, the embodiment of the invention at least has the following effects:

1. the diagnosis device is simple in structure and convenient to use, the monitoring device is used for monitoring the temperature of lubricating oil and the vibration signal of the gear set, the state of the gear set can be obtained, and the monitoring of the state of the gears in the gear set is effectively achieved; the controller controls the gear set to rotate according to the gear state, so that the working safety of the gear set is effectively ensured;

2. the axial loading device and the radial loading device can apply axial force and radial force to the gear set, and the gear can be monitored under the action of different axial force and radial force; the experiment that axial, radial loading power influence was implemented to the simulation gear, and the simulation and the monitoring that are close to industrial field are carried out to gear normal state, single trouble, compound trouble, ensure the authenticity of data.

Drawings

FIG. 1 is a schematic view of a diagnostic device of the present invention;

FIG. 2 is a top view of the diagnostic device of the present invention;

FIG. 3 is a schematic view of an axial loading device of the present application;

FIG. 4 is an enlarged view of the sliding telescopic mechanism of FIG. 3;

FIG. 5 is a schematic view of a different embodiment of the first magnet of FIG. 3;

FIG. 6 is a schematic view of the radial loading mechanism of the present application in operation;

FIG. 7 is a schematic view of a magnet deployment mechanism of the present application;

FIG. 8 is a schematic view of FIG. 6 in a different state;

FIG. 9 is a schematic view of a different embodiment of the second magnet of FIG. 7;

fig. 10 is a flow chart of the monitoring method of the present application.

Wherein: 1. a simulation device; 2. a monitoring device; 3. a controller; 4. a magnet; 5. a sliding telescopic mechanism; 51. a sleeve; 52. a sliding sleeve; 53. a connecting rod; 54. a limiting hinge seat; 55. a chute; 56. a first spring; 6. a cylinder; 61. a connector; 62. a slide bar; 7. an electric motor; 8. a magnet folding and unfolding mechanism; 81. a storage sleeve; 82. a connecting shaft; 83. a second magnet; 84. a second spring; 11. an axial loading device; 111. a first axial loading device; 112. a second axial loading device; 113. a third axial loading device; 12. a radial loading device; 121. a first radial loading device; 122. a second radial loading device; 123. an electric push rod; 13. a gear case; 131. a box body; 132. a box cover; 14. a first gear; 141. a first gear shaft; 15. a second gear; 151. a second gear shaft.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 9, a fault monitoring device for simulating a gear of a rotating machine set comprises a simulating device 1, a monitoring device 2 connected with the simulating device 1, and a controller 3 connected with the monitoring device 2; the simulation device 1 comprises an axial loading device 11, a radial loading device 12, a gear box 13 and a gear set which is rotationally connected in the gear box, wherein the axial loading device 11 is used for applying axial force to the side surface of a gear in the gear set, and the radial loading device 12 is used for applying radial force to the gear set; the monitoring device 2 is used for monitoring the temperature of lubricating oil in the gear box 13 and a vibration signal of the gear set; the controller 3 is used for acquiring the state of the gear set according to the monitoring result of the monitoring device 2 and controlling the gear set to rotate.

The diagnosis device is simple in structure and convenient to use, the temperature of the lubricating oil and the vibration signal of the gear set are monitored through the monitoring device, the state of the gear set can be obtained, and the monitoring of the state of the gear in the gear set is effectively achieved; the controller controls the gear set to rotate according to the gear state, and the working safety of the gear set is effectively guaranteed.

In the present application, a gear set may include two gears, three gears, or more gears that mesh with each other, and in the present embodiment, two gears that mesh with each other are used for illustration.

The gear box 13 is rotatably provided with a first gear shaft 141 and a second gear shaft 151, the first gear shaft 141 is provided with a first gear 14, the second gear shaft 151 is connected with a second gear 15, and the first gear 14 is meshed with the second gear 15.

The rotation of gear can be driven through motor 7, and motor 7 and controller 3 electric connection open through controller control motor 7 and stop, and the output of motor 7 is connected through shaft coupling and first gear axle 141 or second gear axle 151.

In the present application, the monitoring device 2 comprises a temperature sensor 21 arranged inside the gearbox and an acceleration sensor 22 arranged outside the gearbox. The temperature of lubricating oil in the gear box is obtained through the temperature sensor, the vibration signal of the gear set is obtained through the acceleration sensor 22, the temperature signal and the vibration signal are transmitted to the controller, and the controller analyzes the temperature signal and the vibration signal to obtain the states of the first gear 14 and the second gear 15 in the gear set.

The axial loading device 11 may be provided in plurality in the present application. In a specific embodiment, three axial loading devices with the same structure are provided, namely a first axial loading device 111, a second axial loading device 112 and a third axial loading device 113, wherein the first axial loading device 111 is arranged on the left side of the first gear 14, the second axial loading device is arranged on the left side of the second gear 15, and the third axial loading device 113 is arranged on the right side of the second gear 15.

The first axial loading device 111, the second axial loading device 112 and the third axial loading device 113 each include a first magnet 4, a slide telescopic mechanism 5 and a cylinder 6.

The sliding telescopic mechanism 5 includes a sleeve 51 fixedly connected in the housing, an inner diameter of the sleeve 51 is larger than diameters of the first gear shaft 141 and the second gear shaft 151, and the sleeve 51 is sleeved on an outer circumference of the first gear shaft 141 or the second gear shaft 151 and is not in contact with the first gear shaft 141 or the second gear shaft 151. To ensure that the first and

second gear shafts

141 and 151 are not hindered from rotating.

The periphery of the sleeve 51 is connected with a sliding sleeve 52 in a sliding manner, the tail end of the periphery of the sleeve 51 is provided with a sliding groove 55 along the axial direction, a first spring 56 is arranged in the sliding groove 55, the tail end of the first spring 56 is fixed in the sliding groove 55, and the other end of the first spring is connected with a limiting hinged seat 54 which is connected with the sliding groove 55 in a sliding manner. The limiting hinge seat 54 is a hinge seat having a limiting plate, which is designed in the vertical direction to limit the first magnet 4 hinged on the hinge seat from rotating to the vertical direction at most to open. When the first spring 56 is in the natural state, the first magnet 4 is in the retracted state.

One end of the first magnet 4 is hinged with the limit hinge seat 54, and the middle part of the first magnet 4 is hinged with the sliding sleeve 52 through the connecting rod 53.

The output end of the cylinder 6 is provided with a connector 61, and the connector 61 is connected with the sliding sleeve 51 through two sliding rods 62. The cylinder 6 is further connected with the controller 3, and the controller 3 controls the cylinder 6 to stretch out and draw back so as to realize that the first magnet 4 is opened and moves towards the direction close to or far away from the gear set, and the gear set is applied with axial force with controllable size. The closer the first magnet 4 is to the first gear 14 or the second gear 15, the greater the axial force applied to the first gear 14 or the second gear 15. The controller controls the magnets to be close to the first gear 14 and the second gear 15, so that different axial forces can be applied to the gear set, and the use states of the gear set under different axial forces can be monitored.

Specifically, due to the elastic force of the first spring 56, the rightward movement of the sliding sleeve 51 via the connecting rod 53 will firstly open the first magnet 4. After the first magnet 4 is opened, the limiting hinge seat 54 limits the first magnet to prevent the first magnet from excessively opening, and the sliding sleeve 51 continues to move rightwards, so that the limiting hinge seat 54 is pushed to move rightwards to realize the rightward movement of the first magnet 4 and gradually approach the first magnet 4. The sliding sleeve 51 moves leftwards, so that the first magnet 4 moves leftwards, and when the sliding sleeve moves to the natural length of the first spring 56, the first magnet 4 is folded.

This application can make first magnet 4 expand when carrying out the axial loading test through this design, when need not carrying out the axial loading, can receive first magnet 4 receipts to prevent the influence to the gear test.

Further, the first magnet 4 is semicircular to ensure the effect of loading the gear axially.

In some further embodiments, as shown in fig. 5, the first magnet 4 is fixed in a mounting plate, which is provided with a semicircular groove for mounting the first magnet 4. Through this design, can not weaken first magnet 4 and to the power of applying of flank of tooth, and through this design when first magnet 4 from closing to unfolding the in-process, because of the effect of mounting panel, the first magnet 4 of upper and lower both sides can not lead to the inconvenient problem of expansion because of the effect of magnetic force, the expansion of realization first magnet that can be convenient.

The axial loading device 11 of this application design can change the size of applying the axial force to the gear train at the gear train during operation, and the axial force of size difference is applied through the position that changes magnet, simple structure, and control is convenient.

In some embodiments of the present application, a display device is further connected to the controller 3, and the monitoring result of the controller on the gear set can be displayed in real time through the display device. The controller 3 can also be connected with an alarm device, and if the monitoring result is abnormal, the alarm device can give an alarm for prompting.

In other embodiments, only two structurally identical axial loading devices may be provided. For example, one axial loading device 111 is disposed on the left side of the first gear 14, and the other axial loading device is disposed on the right side of the second gear 15.

In one embodiment of the present application, the gear box 13 includes a box body 131 and a box cover 132, the box cover 132 is bolted to the box body 131, and the box cover 132 may be configured as a transparent box cover 132 to facilitate viewing of the inside of the gear box 13. Through bolted cover 132 to facilitate removal of cover 132.

The radial loading device 12 of the present application includes a first radial loading device 121 and a second radial loading device 122 that are identical in structure. The first radial loading means 121 is used for loading the first gear 14 with a radial force, and the second radial loading means 122 is used for loading the second gear 15 with a radial force.

Specifically, the first radial loading device 121 and the second radial loading device 122 each include an electric push rod 123, the electric push rod 123 is mounted on the top surface of the box cover 132 through a bracket, and an output end of the electric push rod is connected to the magnet folding and unfolding mechanism 8 to control the radial loading force.

Specifically, the magnet unfolding mechanism 8 includes a storage sleeve 81 connected to the bottom surface of the box cover 132, and a connecting shaft 82 disposed in the storage sleeve 81 is connected to the output end of the electric push rod 123. The end of the connecting shaft 82 is hinged to one end of the second magnet 83, and the connecting shaft 82 is also connected to the middle portion of the second magnet 83 via a second spring 84. When the second spring 84 is in the natural length, the second magnet 83 is in an open state, i.e., the second magnet 83 is perpendicular to the connecting shaft 82.

During operation, the electric push rod 123 drives the connecting shaft 82 to move downwards, the connecting shaft 82 extends out of the accommodating sleeve 81, the second magnet 83 is opened due to the fact that the limitation of the accommodating sleeve 81 is not provided, and the electric push rod 123 continues to move to control the distance between the second magnet 83 and the gear. When the electric push rod drives the connecting shaft 82 to move upward, the second magnet 83 rotates to be accommodated in the accommodating sleeve 81 under the action of the accommodating sleeve 81.

This design can effectually guarantee that the second magnet is out of work when, can not influence the test of gear, adopts electric putter's drive second magnet 83 to carry out the regulation of loading power apart from the distance of gear, and it is convenient to have the loading power to adjust, the advantage of the simulation of being convenient for.

Further, the second magnet 83 in the radial loading device is long-strip-shaped to adapt to the shape of the gear, so as to achieve a better test effect.

In some further embodiments, as shown in fig. 9, the second magnet 83 is fixed in a mounting plate, which is provided with a rectangular slot for mounting the second magnet 83. The force applied to the tooth surface by the second magnet 83 cannot be weakened through the design, and through the design, when the second magnet 83 is folded to be unfolded, the inconvenience in unfolding of the second magnet 83 due to the effect of the mounting plate can be avoided due to the effect of the magnetic force by the second magnet 83 on the left side and the right side, and the second magnet 83 can be conveniently unfolded.

Further, two handle brackets are designed on the cover 132 to facilitate the removal of the cover when it needs to be removed.

Based on the diagnosis device, the present application also discloses a monitoring method, as shown in fig. 10, the method includes the following steps: controlling the gear set to rotate; controlling the axial loading device 11 to apply axial force to the gear set and/or controlling the radial loading device 12 to apply radial force to the gear set; acquiring the temperature of lubricating oil in the gear box 13 and a vibration signal of the gear set; and acquiring the use state of the gear set according to the temperature of the lubricating oil and the vibration signal of the gear set. Data of the whole process, gear wear failure, gear crack, gear missing, gear breakage, pitting corrosion and the like.

The device is utilized to carry out a large number of simulation experiments of various gear faults and obtain a database of the corresponding lubricating oil temperature and vibration value; and determining the ranges of the lubricating oil temperature and the vibration value corresponding to different faults through data processing and analysis. When the temperature T and the vibration value A of the corresponding lubricating oil after the gear operates show the same fault, judging the fault type of the gear in time; when the faults judged corresponding to the temperature T of the lubricating oil and the vibration value A are inconsistent after the gear operates, the gear operation needs to be continuously monitored; when the temperature T or the vibration value A of the corresponding lubricating oil exceeds a set critical value after the gears run, the gear-driven oil pump can be alarmed and shut down, and the safety of the unit is ensured.

In one embodiment, a monitoring method includes: and step 1, controlling the gear set to rotate. Step 2, controlling the first magnet 4 in the first axial loading device 111 to unfold and move to a side close to the first gear 14, or controlling the first magnet 4 in the second axial loading device 112 to unfold and move to a side close to the second gear 15, or controlling the first magnet 4 in the third axial loading device 113 to unfold and move to a side close to the second gear 15; step 3, the monitoring device 2 acquires the temperature of lubricating oil in the gear box 13 and a vibration signal of the gear set; and 4, acquiring the using state of the gear set by the controller according to the temperature of the lubricating oil and the vibration signal of the gear set. In step 4, the controller stores data of the normal operation state of the gear set. If the gear set is abnormally operated, the temperature of the lubricating oil and the vibration signal of the gear set are abnormal, and the controller compares the acquired data with the stored data to complete the monitoring of the state of the gear set.

The embodiment is used for monitoring the running state of the gear set when a single gear in the gear set is subjected to axial force.

In one embodiment, a monitoring method includes: step 1, controlling the gear set to rotate. Step 2, controlling the first magnet 4 in the first axial loading device 111 to unfold and move to a side close to the first gear 14, and controlling the first magnet 4 in the second axial loading device 112 to unfold and move to a side close to the second gear 15; step 3, the monitoring device 2 acquires the temperature of lubricating oil in the gear box 13 and a vibration signal of the gear set; and 4, acquiring the using state of the gear set by the controller according to the temperature of the lubricating oil and the vibration signal of the gear set.

The embodiment monitors the running state of the gear set when two gears in the gear set are subjected to the same-direction axial force.

In one embodiment, a monitoring method includes: and step 1, controlling the gear set to rotate. Step 2, controlling the first magnet 4 in the first axial loading device 111 to unfold and move to a side close to the first gear 14, and controlling the first magnet 4 in the third axial loading device 113 to unfold and move to a side close to the second gear 15; step 3, the monitoring device 2 acquires the temperature of lubricating oil in the gear box 13 and a vibration signal of the gear set; and 4, acquiring the using state of the gear set by the controller according to the temperature of the lubricating oil and the vibration signal of the gear set.

The embodiment is used for monitoring the running state of the gear set under the condition that two gears in the gear set are subjected to reverse axial force.

In other embodiments, simultaneous application of axial and radial forces may be used to accomplish monitoring of the operating conditions of the gear set when subjected to both radial and axial forces.

Specifically, step 1, the gear set is controlled to rotate. Step 2, controlling the axial loading device 11 to apply an axial force to the gear set; step 3, controlling the radial loading device 12 to apply longitudinal force to the gear set; step 4, the monitoring device 2 acquires the temperature of lubricating oil in the gear box 13 and a vibration signal of the gear set; and 5, acquiring the use state of the gear set by the controller according to the temperature of the lubricating oil and the vibration signal of the gear set.

In step 2 of this embodiment, a single gear may receive an axial force, two gears may receive an axial force in the same direction, or two gears may receive an axial force in opposite directions.

In this embodiment, controlling the radial loading means 12 to apply a longitudinal force to the gear set may be in any one of the following ways.

The method I comprises the following steps: and controlling the electric push rod 123 in the first radial loading device 121 or the second radial loading device 122 to work, so that the magnet 4 in the first radial loading device or the second magnet 83 in the second radial loading device descends to carry out radial loading.

The second method comprises the following steps: and controlling the electric push rods 123 in the first radial loading device 121 and the second radial loading device 122 to work, so that the second magnet 83 in the first radial loading device and the second magnet 83 in the second radial loading device descend for radial loading.

It is worth to say that, this application not only can carry out the test of axial loading through the distance of controlling first magnet 4 and being close to the gear side, still through setting up slip telescopic machanism 5, realizes the control to first magnet 4 position. When the axial loading test is needed, the first magnet 4 is unfolded through the sliding telescopic mechanism 5, and when the axial loading test is not needed, the first magnet 4 is withdrawn through the sliding telescopic mechanism 5, so that the radial loading test is not influenced, and the stability and the high efficiency of the axial loading test are ensured.

This application not only steerable second magnet 83 is close to the distance of the gear flank of tooth and carries out radial loaded test, this application has still set up magnet exhibition mechanism 8 very much, through the setting of magnet exhibition mechanism 8, when needs carry out radial loading test, through magnet exhibition mechanism 8 with the expansion of second magnet 83, when not needing to carry out radial loading test, through magnet exhibition mechanism 8 of taking back second magnet 83, the stability of radial loading test is high-efficient, can not influence the axial loading test.

Because the sliding telescopic mechanism 5 and the magnet folding and unfolding mechanism 8 designed by the application have no influence on the gear testing due to radial force when the gear is subjected to the axial loading testing alone, and have no influence on the gear testing due to the axial force when the gear is subjected to the radial loading testing alone. When the gear is subjected to an axial loading test and a radial loading test at the same time, a mixed loading stress test can be well completed.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A fault monitoring device for simulating a gear of a rotating unit, comprising:

the simulation device (1) comprises an axial loading device (11), a radial loading device (12), a gear box (13) and a gear set which is rotationally connected in the gear box, wherein the axial loading device (11) is used for applying axial force to the side surface of a gear in the gear set, and the radial loading device (12) is used for applying radial force to the gear set;

the monitoring device (2) is connected with the simulation device (1), and the monitoring device (2) is used for monitoring the temperature of lubricating oil in the gear box (13) and vibration signals of the gear set;

and the controller (3) is connected with the monitoring device (2), and the controller (3) is used for acquiring the state of the gear set according to the monitoring result of the monitoring device (2) and controlling the gear set to rotate.

2. Fault monitoring device simulating a rotating group gear according to claim 1, characterised in that the set of gears comprises a first gear (14) and a second gear (15) in mesh;

the axial loading device (11) comprises a first axial loading device (111) arranged on one side of the first gear (14), and a second axial loading device (112) and a third axial loading device (113) which are respectively arranged on two side faces of the second gear (15);

the first axial loading device (111), the second axial loading device (112) and the third axial loading device (113) are identical in structure and comprise first magnets (4) used for providing axial loading force.

3. The fault monitoring device for the gear of the simulated rotating machine set according to claim 2, wherein the first axial loading device (111) further comprises a sleeve (51) sleeved on the periphery of the first gear shaft (141), the periphery of the sleeve (51) is slidably connected with a sliding sleeve (52), a sliding groove (55) is arranged at the tail end of the periphery of the sleeve (51), a limiting hinged seat (54) is slidably connected in the sliding groove (55), one end of the first magnet (4) is connected with the limiting hinged seat (54), and the middle part of the first magnet (4) is hinged and connected with the periphery of the sliding sleeve (52) through a connecting rod (53).

4. The fault monitoring device for gear of analog rotating machine set according to claim 3, characterized in that the first axial loading device (111), the second axial loading device (112) and the third axial loading device (113) further comprise a cylinder (6) in signal connection with the controller (3), the output end of the cylinder (6) is provided with a connector (61), and the connector (61) is connected with the sliding sleeve (52) through at least two sliding rods (62).

5. A fault monitoring device simulating a gear of a rotating machine set according to claim 2, characterized in that the gearbox (13) comprises a box (131) and a box cover (132) detachably connected to the box (131);

the radial loading device (12) comprises a first radial loading device (121) for loading the first gear (14) in the radial direction and a second radial loading device (122) for loading the second gear (15) in the radial direction.

6. The fault monitoring device for gear of analog rotating machine set according to claim 5, characterized in that the first radial loading device (121) and the second radial loading device (122) are identical in structure and comprise an electric push rod (123) connected above the box cover (132) and a magnet folding and unfolding mechanism (8) located below the box cover (132);

magnet folding and unfolding mechanism (8) are including connecting in cover (81) of accomodating of case lid (132) bottom surface and being located connecting axle (82) of accomodating in cover (81), the head end of connecting axle (82) is connected with electric putter (123)'s output, the end of connecting axle (82) is articulated with the one end of second magnet (83) and is connected, connecting axle (82) still through second spring (84) with the intermediate part of second magnet (83) is connected.

7. Fault monitoring device simulating a rotating group gear according to claim 1, characterised in that the monitoring device (2) comprises a temperature sensor (21) arranged inside the gearbox and an acceleration sensor (22) arranged outside the gearbox.

8. A fault monitoring device simulating a rotating machine group gear according to claim 1, characterized in that it further comprises an electric motor (7) connected to the first gear shaft (141) or the second gear shaft (151), said electric motor (7) being electrically connected to the controller (3).

9. A method of monitoring a fault monitoring device simulating a rotating machine group gear according to any of claims 1 to 8, comprising the steps of:

controlling the gear set to rotate;

controlling an axial loading device (11) to apply an axial force to the gear set and/or a radial loading device (12) to apply a radial force to the gear set;

acquiring the temperature of lubricating oil in a gear box (13) and a vibration signal of a gear set;

10. A method of fault monitoring of gears of a simulated rotating group as claimed in claim 9, characterised in that said controlling the axial loading means (11) to apply an axial force to the gear set comprises:

controlling a first magnet (4) in the first axial loading device (111) to be unfolded and move to one side close to a first gear (14); or

Controlling the first magnet (4) in the second axial loading device (112) to unfold and move to one side close to the second gear (15); or

Controlling the first magnet (4) in the third axial loading device (113) to be unfolded and move to one side close to the second gear (15); or

Controlling the first magnet (4) in the first axial loading device (111) to unfold and move to one side close to the first gear (14), and controlling the first magnet (4) in the second axial loading device (112) to unfold and move to one side close to the second gear (15); or

The first magnet (4) in the first axial loading device (111) is controlled to be unfolded and move to one side close to the first gear (14), and the first magnet (4) in the third axial loading device (113) is controlled to be unfolded and move to one side close to the second gear (15).