WO2022111350A1

WO2022111350A1 - Roller automatic grease filling system and method

Info

Publication number: WO2022111350A1
Application number: PCT/CN2021/131114
Authority: WO
Inventors: 张春晖
Original assignee: 江苏嘉轩智能工业科技股份有限公司
Priority date: 2020-11-25
Filing date: 2021-11-17
Publication date: 2022-06-02
Also published as: CN112145946B; CN112145946A

Abstract

Disclosed is a roller automatic grease filling system. The system comprises: a measuring device, an automatic grease injection device, a measuring main body, an on-line monitoring device (15) and a data transmission device (14), wherein the automatic grease injection device comprises a grease storage device (1), a grease pump (2) and a grease injection pipeline (3); the measuring main body comprises a main shaft (4), a bearing (5), an outer bearing cover (6) and an inner bearing cover (7), the main shaft (4) being provided with an axial grease intake channel (8) and a radial grease injection hole (9) which are in communication with each other, and the grease intake channel (8) being in communication with the grease injection pipeline (3); the measuring device comprises a vibration sensor (10); and the on-line monitoring device (15) stores apparatus data of the roller, historical grease injection data and bearing use duration so as to optimize an amplitude threshold of a bearing and determine the grease injection amount. According to the system, a working state of the roller bearing is monitored on line, grease is automatically and accurately injected into the roller bearing by means of reasonable calculation and data optimization according to the actual requirements of the roller, the grease injection efficiency is improved, and the service life of the roller bearing is prolonged. Further disclosed is an automatic grease filling method.

Description

A system and method for automatically filling grease in a drum

technical field

The invention relates to the field of transmission technology, and more particularly, to a system and method for automatically filling grease in a drum.

Background technique

The permanent magnet drum has the advantages of simple structure, reliable operation, low loss, high efficiency, and can realize direct drive control. The outer rotor electric drum needs to add lubricating oil to the supporting bearing after working for a period of time to reduce friction and prolong bearing life.

The permanent magnet roller is an external rotor motor, and it is always in a rotating working state in the application of the conveyor belt. In order to reduce the friction of the bearing of the permanent magnet roller and reduce the wear of the bearing, it is necessary to add lubricating grease to the bearing. In order to ensure that the bearing has sufficient lubrication For grease, it is usually necessary to go deep into the well to manually refuel, and inject the lubricating oil from the oil injection hole on the side wall of the end oil cover. It only takes about three hours to refuel. If the oil cannot be refueled in time in bad conditions, the machine may be damaged. The existing oiling method requires regular and quantitative manual refueling, which cannot effectively and accurately determine whether the bearing is lacking in lubricating grease. Therefore, the refueling time and refueling amount cannot be arranged according to the actual needs of the bearing, and the refueling effect cannot be predicted.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides an automatic grease filling system and method for a drum, the system includes an automatic oil filling device for automatically filling grease into a bearing and a detection device for detecting the working parameters of the bearing, the drum The automatic grease filling system further comprises: a detection main body connected with the detection device and the automatic oil filling device, an online monitoring device, and a data transmission device for data transmission between the online monitoring device, the automatic lubrication device and the detection device. data transmission device;

The automatic oil injection device includes: an oil storage device, an oil pump, an oil injection pipeline and a controller;

The detection main body includes: a main shaft, a bearing sleeved on the main shaft, an outer bearing cover and an inner bearing cover assembled on the main shaft on both sides of the bearing, and the main shaft is respectively provided with a communicating axial oil inlet channel and radial oil injection holes, wherein the oil inlet channel is communicated with the oil injection pipeline; when the oil is lacking, the oil pump quantitatively pumps out the grease in the oil storage device, and transports it to the oil inlet channel along the axial direction of the main shaft through the oil injection pipeline , After reaching the position of the bearing, open the radial oil injection hole reaching the bearing on the main shaft here, so as to inject oil into the bearing.

The detection device includes: a data collector and a vibration sensor, the vibration sensor is arranged on the end of the main shaft or the fixed seat close to the bearing; the vibration sensor detects the amplitude data of the bearing and transmits it to the data acquisition device;

The online monitoring device stores the equipment data of the drum, historical oil injection data, real-time amplitude data, and bearing service time data to optimize the bearing amplitude threshold and frequency abnormal value and determine the oil injection amount; the online monitoring device stores the oil injection. The amount data is transmitted to the controller through the data transmission device to control the oil filling amount of the oil storage device.

By correlating the vibration model with the oil injection amount through the online monitoring device, the present invention performs oil injection according to the actual needs of the bearing, thereby realizing precise and automatic oil injection, eliminating the tedious manual oil injection and the unsafe factors of manual oil injection.

Preferably, the online monitoring device further includes an oil injection pre-reminder unit, the oil injection pre-reminder unit performs an oil injection pre-reminder based on the stored real-time amplitude data and amplitude threshold of the bearing. The real-time amplitude data is output through the real-time vibration model of the bearing, and the real-time vibration data and frequency data are compared with the historical oil injection data to predict the remaining oil amount of the bearing and how long it will be until the next oil injection, so as to set a reminder.

Preferably, the online monitoring device further includes an oil injection feedback unit, and the data transmission device transmits the bearing amplitude data after oil injection to the oil injection feedback unit. After the oil injection is completed, whether the bearing meets the normal working state can be judged by the vibration indicators in the vibration model, so as to feedback the oil injection effect.

Preferably, the historical oil injection data includes: historical oil injection time, historical oil injection duration, historical oil injection speed and historical oil injection amount.

Preferably, the vibration sensor has a built-in temperature compensation device, and the temperature compensation device converts the ambient temperature into the first amplitude compensation;

Preferably, the vibration sensor has a built-in noise compensation device, and the noise compensation device converts ambient noise into a second amplitude compensation;

Preferably, the vibration sensor has a built-in humidity compensation device, and the humidity compensation device converts the ambient humidity into a third amplitude compensation;

Since the vibration of the bearing is greatly affected by the external environment, the environmental temperature, material transportation noise, mechanical movement noise, and environmental humidity factors are taken into account, and the compensation function of temperature, noise and humidity is set inside the vibration sensor. in order to reduce the influence of the above factors.

Preferably, the data transmission device is designed to transmit optical or radio signals.

Preferably, the data transmission device is an optical fiber device; the optical fiber device converts the optical signal of the oil injection amount determined by the online monitoring device into an electric signal of the oil injection amount and transmits it to the controller, and the oil injection amount is electrically transmitted through the controller. A signal is transmitted to the automatic oil filling device.

Preferably, the oil storage device is provided with an oil amount prompting sensor to indicate the remaining oil amount of the oil storage device, which is convenient for timely replenishment and avoids the failure to provide lubricating grease to the bearing in time due to the shortage of oil in the oil storage device.

Preferably, the outer bearing cover is provided with an automatic oil drain valve. When the bearing is filled with more oil than the actual need, the automatic oil drain valve on the outer bearing cover can remove the grease in time to prevent the grease from entering the body and affecting the winding insulation of the stator. .

Preferably, a skeleton oil seal is arranged between the outer oil cover and the inner oil cover. Specifically, an outer skeleton oil seal is arranged between the outer oil cover and the outer ring of the bearing to prevent the lubricating grease in the bearing from leaking out and effectively prevent the outer ash layer Enter the bearing; there is an inner skeleton oil seal between the inner oil cover and the inner ring of the bearing to prevent the lubricating grease from entering the inside of the equipment body and affecting the insulation of the stator winding.

Based on the above-mentioned drum automatic grease filling system, the present invention further provides a systematic automatic grease filling method, the method comprising:

The vibration sensor detects the amplitude data of the bearing and transmits it to the online monitoring device through a data collector;

comparing the amplitude data to an amplitude threshold calculated by the on-line monitoring device;

If the amplitude data is less than the amplitude threshold value, the online monitoring device stores the amplitude data for multiple times for pre-reminder of oil filling;

If the amplitude data is greater than the amplitude threshold, the online monitoring device transmits the oil filling amount signal to the automatic oil filling device through the data transmission device.

The beneficial effects of the present invention are:

(1) The present invention controls the automatic oil injection device to inject oil on demand through the online monitoring device, realizes automatic and accurate oil injection, and avoids the cumbersome and unsafe factors of manual operation.

(2) The present invention performs bearing lubrication on demand, avoids the bearing wear caused by lack of lubricating grease, and improves the service life of the bearing.

(3) The online monitoring device of the present invention can be mounted remotely, and the adjustment operation can be performed on mobile terminals such as mobile phones based on the cloud computing of the Internet of Things, which is convenient and quick.

Description of drawings

Fig. 1 is the drum automatic filling grease system schematic diagram of embodiment 1 and 2 of the present invention;

FIG. 2 is a schematic diagram showing the circumferential groove and the axial groove in the main shaft according to the second embodiment of the present invention.

Detailed ways

Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While specific embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the invention to those skilled in the art.

It should be noted that certain terms are used in the description and claims to refer to specific components. It should be understood by those skilled in the art that the same component may be referred to by different nouns. The description and the claims do not use the difference in terms as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As referred to throughout the specification and claims, "comprising" or "including" is an open-ended term and should be interpreted as "including but not limited to". Subsequent descriptions of the specification are preferred embodiments for implementing the present invention, however, the descriptions are for the purpose of general principles of the specification and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be determined by the appended claims.

Embodiment 1 This embodiment provides an automatic grease filling system for a drum.

As shown in Figure 1, the system includes an automatic oil filling device for automatically filling the bearing with grease and a detection device for detecting the working parameters of the bearing. The automatic oil filling system for the drum also includes: and the detection device and the automatic oil filling A detection body connected to the device, an online monitoring device, and a data transmission device 14 for data transmission between the online monitoring device, the automatic lubricating device and the detection device;

The automatic oil filling device includes: an oil storage device 1, an oil pump 2, an oil filling pipeline 3 and a controller 19;

The detection main body includes: a main shaft 4, a bearing 5 sleeved on the main shaft, an outer bearing cap 6 and an inner bearing cap 7 assembled on the main shaft 4 on both sides of the bearing 5, and the main shaft 4 is respectively provided with a communicating axial oil inlet channel 8 and radial oil injection holes 9, wherein the oil inlet channel 8 communicates with the oil injection pipeline 3;

The detection device includes: a data collector 11 and a vibration sensor 10. The vibration sensor 10 is arranged on the end of the main shaft 4 close to the bearing 5 or on the fixed seat 20 at the end of the main shaft 4; the vibration sensor 10 detects the amplitude data of the bearing 5 and transmitted to the data collector 11;

The online monitoring device 15 stores the equipment data of the drum, historical oil injection data, real-time amplitude data, and bearing service time data to optimize the bearing amplitude threshold and frequency abnormal value and determine the oil injection amount; the online monitoring device 15 transmits the data of the oil injection amount through data transmission The device 14 is transmitted to the controller 19 to control the filling amount of the oil storage device 1 .

The online monitoring device 15 further includes an oil injection feedback unit, and the data transmission device 14 transmits the bearing amplitude data after oil injection to the oil injection feedback unit.

The vibration sensor 10 has a built-in temperature compensation device, and the temperature compensation device converts the ambient temperature into a first amplitude compensation;

The vibration sensor 10 has a built-in noise compensation device, and the noise compensation device converts the environmental noise into a second amplitude compensation;

The vibration sensor 10 has a built-in humidity compensation device, and the humidity compensation device converts the ambient humidity into a third amplitude compensation;

The data transmission device 14 is designed to transmit optical or radio signals.

In a preferred embodiment, the data transmission device 14 is an optical fiber device; the optical fiber device converts the optical signal of the oil injection amount determined by the online monitoring device into an electric signal of the oil injection amount and transmits it to the controller 19, and the oil injection amount is transmitted by the controller 19. An electrical signal is transmitted to the automatic oil filling device.

The oil storage device 1 is provided with an oil quantity prompting sensor, an automatic oil drain valve is provided on the outer bearing cover 6 , and a skeleton oil seal 13 is arranged between the outer bearing cover 6 and the inner bearing cover 7 .

In this embodiment, the online monitoring device correlates the vibration model with the oil injection amount, and performs oil injection according to the actual needs of the bearing, thereby realizing precise automatic oil injection, eliminating the tedious manual oil injection, and avoiding the unsafe factor of manual oil injection.

Embodiment 2 This embodiment provides another automatic grease filling system for drums.

As shown in Figure 1, the system includes an automatic oil filling device for automatically filling the bearing with grease and a detection device for detecting the working parameters of the bearing. The automatic oil filling system for the drum also includes: connected with the detection device and the automatic oil filling device The detection main body, the online monitoring device and the data transmission device 14 for data transmission between the online monitoring device, the automatic lubrication device and the detection device;

The detection main body includes: a main shaft 4, a bearing 5 sleeved on the main shaft, an outer bearing cap 6 and an inner bearing cap 7 assembled on the main shaft 4 on both sides of the bearing 5, and an axial oil inlet channel 8 is provided on one end of the main shaft 4, The two ends of the main shaft 4 are respectively provided with radial oil injection holes 9, and the oil inlet channel 8 is communicated with the radial oil injection holes 9 at both ends, so as to realize the simultaneous oil injection to the bearing. When there is no oil, the oil pump 2 pumps out the grease in the oil storage device 1 quantitatively, and transports it to the oil inlet channel 8 along the axial direction of the main shaft through the oil filling pipeline 3. After reaching the position of the bearing 5, it is opened on the main shaft 4 here. The radial oil filling hole 9 of the bearing 5 is reached, so that the bearing 5 is filled with oil. As shown in FIG. 2, on the main shaft 4, the circumferential groove 16 is circumferentially turned along the radial oil injection hole 9, and then along the main shaft axial direction beside the circumferential groove 16, a number of circumferentially distributed grooves are respectively milled in the axial direction. Axial groove, the depth of the axial groove is smaller than the circumferential groove 16, and the length of the axial groove is longer than the positioning step, so that the circumferential groove 16 is filled first when the two ends of the main shaft 4 are filled with oil, and after the circumferential groove 16 is full, slowly The flow flows to several evenly distributed axial grooves, and then overflows from the axial grooves to flow into the bearing 5 evenly and slowly, avoiding uneven oil injection.

As a preferred way, two ends of the main shaft 4 are provided with positioning steps, and the bearings 5 are positioned by the positioning steps, and axial oil inlet passages 8 and radial oil injection holes 9 are respectively opened at both ends of the main shaft 4 to inject oil into the bearings 5 at both ends respectively. .

The detection device includes: a data collector 11 and a vibration sensor 10, the vibration sensor 10 is arranged on the fixed seat 20 at the end of the main shaft 4 close to the bearing 5; the vibration sensor 10 detects the amplitude data of the bearing 5 and transmits it to the data acquisition device 11;

The vibration of the bearing 5 drives the synchronous vibration of the main shaft 4 near the bearing, so the purpose of measuring the amplitude of the bearing 5 is achieved by indirectly measuring the vibration of the main shaft 4. The fixed seat 20 is sleeved on the end of the main shaft 4 to fix the main shaft 4, and the vibration sensor 10 is installed in the The bearing amplitude can be measured at the end of the main shaft 4 near the bearing or on the fixed seat 20 . The causes of vibration of the bearing include: friction between the bearing and the main shaft, dents and abrasive particles in the manufacture of the bearing, bumps and scratches in the use of the bearing, and unclean lubricating grease. The vibration model of the bearing is related to the waveform of the bearing vibration and the number of rollers conveying the material. The waveform indicators of the bearing vibration include peak value, root mean square value, form factor, probability density and kurtosis coefficient. The peak value reflects the maximum value of the amplitude at a certain time, and the root mean square value is the average value of the amplitude over time, which is especially suitable for the slow change of the amplitude value with time such as random vibration of wear and tear. The waveform factor is defined as the ratio of the peak value to the average value of the amplitude. When the value of the waveform factor is too large, it indicates that wear has occurred; the probability density curve of the amplitude of the fault-free rolling bearing is a typical normal distribution curve; and once a fault occurs, the probability density curve may be Skew or dispersion occurs. Due to factors such as wear and fatigue, the bearing amplitude will increase, the vibration harmonics will increase, the high-density area will increase, and the low-density areas on both sides will expand outward. At this time, it is very effective to use the kurtosis coefficient as a diagnostic feature quantity. The above vibration indicators are different for different models and types of equipment. In this embodiment, by building a vibration model of the bearing 5, comprehensively considering the change of the above-mentioned vibration index with the bearing use time when the bearing 5 lacks grease, the vibration model of the bearing 5 is continuously optimized and trained, and the oil injection amount is corrected in combination with the historical oil injection data, and Output the current oil filling amount data to the controller 19 of the automatic oil filling device.

The online monitoring device 15 further includes a pre-reminder unit for oil injection, and the pre-reminder unit for oil injection performs pre-reminder for oil injection based on the stored amplitude data and amplitude threshold of the bearing. The real-time amplitude data is output through the real-time vibration model of the bearing, and the real-time vibration data is compared with the historical oil injection data, which can predict the remaining oil amount of the bearing and how long it will be until the next oil injection, so as to set a reminder.

The online monitoring device 15 further includes an oil injection feedback unit, and the data transmission device transmits the bearing amplitude data after oil injection to the oil injection feedback unit. After the oil injection is completed, whether the bearing meets the normal working state can be judged by the vibration indicators in the vibration model, so as to feedback the oil injection effect.

Historical oil filling data includes: historical oil filling time, historical oil filling time, historical oil filling speed and historical oil filling amount.

The vibration sensor 10 has a built-in noise compensation device, and the noise compensation device converts ambient noise into a second amplitude compensation;

Since the vibration of the bearing is greatly affected by the external environment, the ambient temperature, the noise of material transportation, the noise of mechanical movement, and the humidity of the environment are taken into account, and the compensation function of temperature, noise and humidity is set inside the vibration sensor. in order to reduce the influence of the above factors.

The oil storage device 1 is provided with an oil amount prompting sensor to indicate the remaining oil amount of the oil storage device, which is convenient for timely replenishment and avoids the inability to provide lubricating grease to the bearing in time due to the shortage of oil in the oil storage device.

The outer bearing cover 6 is provided with an automatic oil drain valve. When the bearing 5 is filled with more oil than the actual need, the automatic oil drain valve on the outer bearing cover 6 can remove the grease in time to prevent the grease from entering the body and affecting the stator winding insulation. A skeleton oil seal 13 is arranged between the outer bearing cover 6 and the inner bearing cover 7. Specifically, an outer skeleton oil seal is arranged between the outer bearing cover 6 and the outer ring of the bearing 5 to prevent the lubricating grease in the bearing 5 from leaking out and effectively prevent external The ash layer enters the bearing; the inner skeleton oil seal is provided between the inner bearing cover 7 and the inner ring of the bearing 5 to prevent the lubricating grease from entering the inside of the equipment body and affecting the insulation of the stator winding.

As a preferred method, the material of the outer skeleton oil seal is fluorine rubber, the outer skeleton oil seal has a double sealing lip structure, the double sealing lips are respectively the outer auxiliary lip and the inner lip, the inner ring of the outer skeleton oil seal is provided with a groove, and a groove is placed in the groove. The locking spring ring is used to prevent the inner ring of the outer frame oil seal from loosening and reducing the sealing performance. The outer ring of the outer frame oil seal is closely matched with the mounting hole of the outer oil cover, and the inner ring of the outer frame oil seal is closely matched with the shaft , The outer auxiliary lip of the outer skeleton oil seal set on the outer oil cover is used to prevent dust, and the inner lip is used to seal the lubricating grease to prevent the grease from flowing out and the bearing lubrication failure.

In a preferred embodiment, a systematic automatic grease filling method is provided, the method comprising:

The vibration sensor 10 detects the amplitude data of the bearing 5 and transmits it to the online monitoring device 15 through the data collector 11;

comparing the amplitude data with the amplitude threshold calculated by the online monitoring device 15;

If the amplitude data is greater than the amplitude threshold, the online monitoring device transmits the oil filling amount signal to the automatic oil filling device through the data transmission device 14 .

The automatic grease filling system further includes a rotational speed sensor for collecting the rotational speed ω of the drum. Perform FFT processing on the frequency collected by the vibration sensor to obtain the vibration spectrum. If the frequency point f _e of the abnormal amplitude in the vibration spectrum and the rotational speed ω collected by the rotational speed sensor satisfy the functional relationship of formula (1), or the drum frequency f and the rated speed ω ₀ satisfy the functional relationship of formula (2), it is judged that oil injection is required, Issue a fuel injection reminder, otherwise, it is judged as running environment noise.

Among them, ω is the rotational speed collected by the rotational speed sensor, ω ₀ is the rated rotational speed, f _e is the frequency point of the abnormal amplitude in the vibration spectrum, f is the drum frequency, δ is a coefficient in the range of 0-1, and n is greater than 0. positive integer,

is the average frequency of the drum.

On the one hand, the above algorithm eliminates abnormal frequencies caused by non-roller reasons, such as vibration caused by falling stones during transportation, and on the other hand, it effectively judges the abnormal frequencies caused by the rollers, and issues oil filling reminders in time. .

In this embodiment, the on-line monitoring device controls the automatic oil injection device to inject oil on demand, thereby realizing automatic and accurate oil injection, and avoiding the cumbersome and unsafe factors of manual operation. Bearing lubrication is carried out on demand, which avoids bearing wear caused by lack of lubricating grease and improves bearing service life. The online monitoring device in this embodiment can be carried remotely, and the adjustment operation can be performed on a mobile terminal such as a mobile phone based on the cloud computing of the Internet of Things, which is convenient and quick.

The above-mentioned specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. In addition, it should be understood that although this specification is described according to the implementation manner, the above-mentioned embodiments are exemplary and are not used for The protection scope of the present invention is limited, and any changes, modifications, replacements and modifications made to the above-described embodiments by those of ordinary skill in the art without departing from the principle and purpose of the present invention shall be included in the protection scope of the present invention. Inside.

Claims

An automatic grease filling system for a drum, comprising an automatic oil filling device for automatically filling a bearing with grease and a detection device for detecting the working parameters of the bearing, characterized in that:

The automatic grease filling system for the drum also includes: a detection main body connected with the detection device and the automatic oil filling device, an online monitoring device, and an on-line monitoring device, an automatic lubricating device and a detection device for performing the operation between the online monitoring device, the automatic lubricating device and the detection device. a data transmission device (14) for data transmission;

The automatic oil injection device comprises: an oil storage device (1), an oil pump (2), an oil injection pipeline (3) and a controller (19);

The detection main body comprises: a main shaft (4), a bearing (5) sleeved on the main shaft, an outer bearing cover (6) and an inner bearing cover assembled on the main shaft (4) on both sides of the bearing (5) (7), an axial oil inlet channel (8) and a radial oil injection hole (9) are respectively provided on the main shaft (4), wherein the oil inlet channel (8) is connected to the oil injection pipeline (3) connected;

The detection device comprises: a data collector (11) and a vibration sensor (10), the vibration sensor (10) being arranged on the end of the main shaft (4) or the fixing seat (20) close to the bearing (5); The vibration sensor (10) detects the amplitude data and frequency data of the bearing and transmits it to the data collector (11);

The online monitoring device (15) stores equipment data of the drum, historical oil injection data, real-time amplitude data, and bearing service time data to optimize the amplitude threshold and frequency abnormal value of the bearing and determine the oil injection amount; the online monitoring device (15) 15) Transmit the data of the oil injection amount to the controller (19) through the data transmission device (14) to control the oil injection amount of the oil storage device (1).
The automatic grease filling system for a drum according to claim 1, characterized in that, the online monitoring device (15) further comprises an oil filling pre-reminder unit, the oil filling pre-reminder unit is based on the stored real-time amplitude data of the bearing and Amplitude threshold for pre-reminder of oil filling.
The automatic grease filling system for a drum according to claim 1, characterized in that, the online monitoring device (15) further comprises an oil injection feedback unit, and the data transmission device (14) transmits the bearing amplitude data after oil injection to The oil injection feedback unit.
The automatic grease filling system for a drum according to claim 1, wherein the historical oil filling data includes: historical oil filling time, historical oil filling time, historical oil filling speed and historical oil filling amount.
The automatic grease filling system for a drum according to claim 1, wherein the vibration sensor (10) has a built-in temperature compensation device, and the temperature compensation device converts the ambient temperature into a first amplitude compensation;
The automatic grease filling system for a drum according to claim 1, wherein the vibration sensor (10) has a built-in noise compensation device, and the noise compensation device converts environmental noise into a second amplitude compensation;
The automatic grease filling system for a drum according to claim 1, wherein the vibration sensor (10) has a built-in humidity compensation device, and the humidity compensation device converts the ambient humidity into a third amplitude compensation;
An automatic grease filling system for drums according to claim 1, characterized in that, the data transmission device (14) is designed to transmit optical signals or radio signals.
The automatic grease filling system for a drum according to claim 8, wherein the data transmission device (14) is an optical fiber device; and the optical fiber device converts the optical signal of the oil filling amount determined by the online monitoring device into the oil filling amount electric signal The signal is transmitted to the controller (19), and the electrical signal of the oil injection amount is transmitted to the automatic oil injection device through the controller (19).
The automatic grease filling system for a drum according to claim 1, characterized in that, the oil storage device (1) is provided with an oil quantity prompting sensor.
The automatic grease filling system for a drum according to claim 1, characterized in that, an automatic oil drain valve is provided on the outer bearing cover (6).
The automatic grease filling system for a drum according to claim 1, characterized in that a skeleton oil seal (13) is arranged between the outer bearing cover (6) and the inner bearing cover (7).
An automatic grease filling method using any one of the systems of claims 1-12, wherein the automatic grease filling method comprises:

The vibration sensor (10) detects the amplitude data of the bearing (5) and transmits it to the online monitoring device (15) through a data collector (11);

comparing the amplitude data with an amplitude threshold calculated by the on-line monitoring device (15);

If the amplitude data is less than the amplitude threshold value, the online monitoring device stores the amplitude data for multiple times for pre-reminder of oil filling;

If the amplitude data is greater than the amplitude threshold, the online monitoring device transmits the oil filling amount signal to the automatic oil filling device through the data transmission device (14).