Paper machine control device with load fluctuation suppression function and control method thereof

Abstract

The invention relates to the technical field of paper machine control devices, in particular to a paper machine control device with a load fluctuation suppression function and a control method thereof.The paper machine control device comprises a transmission assembly, a low-pass filter and a lubricating assembly, one side of the lubricating assembly is fixedly connected with an oil conveying assembly, the front end of the lubricating assembly is fixedly connected with a filtering assembly, and the lubricating assembly comprises a base; the top end of the base is fixedly connected with a lubricating box, one side of the lubricating box is fixedly connected with an oil collecting box, an oil collecting groove is formed in the inner side of the lubricating box, the inner side of the lubricating box is fixedly connected with an oil spraying nozzle, and the inner side of the oil collecting groove is fixedly connected with a bearing body and an annular plate; according to the device, continuous lubrication of the bearing is achieved, the service life is prolonged, abrasion and vibration are reduced, equipment stability and production efficiency are improved, maintenance cost is reduced, meanwhile, a transmission system is stabilized, fluctuation influences are reduced, and paper quality and equipment operation efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of paper machine control devices, and in particular to a paper machine control device with a load fluctuation suppression function and a control method thereof. Background Art

[0002] As a basic raw material industry, the papermaking industry is closely related to economic and social development and the daily lives of residents. With the prosperity of the economy and society and the improvement of people's living standards, the papermaking industry has developed rapidly. In the papermaking process, paper machine drive control is one of the core technologies in papermaking production, which directly affects paper quality, production efficiency and energy consumption. With the development of large-scale, high-speed and intelligent papermaking equipment, the importance of drive control system has become increasingly prominent.

[0003] The transmission system of a paper machine is mainly composed of the wire section, press section, front drying section, sizing machine, post-drying section, calender, winder and other parts. Each section requires precise and stable control to ensure the quality and production efficiency of paper. In order to ensure the stable operation and efficient production of the paper machine, the transmission control of the paper machine is divided into main transmission and slave transmission. The main transmission adopts speed control. After the speed of the main transmission is set, the speed of the upper level will be transmitted to the subsequent transmission part through the speed chain to ensure the smooth output of the entire paper. The slave transmission refers to the transmission other than the main transmission, such as the bottom wire vacuum roller of the wire section, the bottom wire guide roller, the surface wire composite roller, the core wire composite roller, the first upper roller, the second upper roller, some transmission points of the drying section, the sizing upper roller, the calender lower roller, etc. The slave transmission requires the speed to track the main transmission synchronously, and it must also ensure load balance. In order to ensure the stable load of the equipment operation, these rollers or drying cylinders adopt torque control;

[0004] During the operation of a paper machine, bearing wear may cause shaking or vibration of the equipment. This vibration may cause the seals inside the drying cylinder to loosen. If these problems are not effectively solved, they may further cause a series of problems such as equipment shaking, increased noise, and shortened equipment service life, thereby having a serious negative impact on production efficiency and equipment life. Therefore, to address the above problems, a paper machine control device with a load fluctuation suppression function and a control method thereof are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a paper machine control device and a control method with a load fluctuation suppression function, so as to solve the problem that bearing wear may cause shaking or vibration during equipment operation. Such vibration may cause the seals inside the drying cylinder to loosen. If these problems are not effectively solved, they may further cause a series of problems such as equipment shaking, increased noise and shortened equipment service life, thereby having a serious negative impact on production efficiency and equipment life.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A paper machine control device with a load fluctuation suppression function and a control method thereof include a transmission component, a low-pass filter and a lubrication component, wherein one side of the lubrication component is fixedly connected to an oil delivery component, the front end of the lubrication component is fixedly connected to a filter component, the lubrication component includes a base, the top of the base is fixedly connected to a lubrication box, one side of the lubrication box is fixedly connected to an oil collecting box, an oil collecting groove is provided on the inside of the lubrication box, an oil nozzle is fixedly connected to the inside of the lubrication box, a bearing body and a ring plate are fixedly connected to the inside of the oil collecting groove, the oil delivery component includes an annular frame, the inside of the annular frame is fixedly connected to a soft oil pipe, the soft oil pipe is fitted with the outside of the extrusion groove, the extrusion groove is provided on the outside of the shaft wheel, the inside of the shaft wheel is fixedly connected to the frame plate, and the two ends of the soft oil pipe are respectively fixedly connected to an oil suction cylinder and a bifurcation pipe.

[0008] As a further optimization of the present invention, the transmission assembly includes a drying cylinder body, both ends of the drying cylinder body are fixedly connected to transmission rollers, the outer side of the transmission roller is fixedly connected to a first gear, the outer side of the first gear is meshed with the outer side of the second gear, and the inner side of the second gear is fixedly connected to the end of the main shaft of the drive motor.

[0009] As further optimized content of the present invention, the bottom end of the drive motor is fixedly connected to the top of the base, the left side of the low-pass filter is fixedly connected to the base, the number of the lubrication components is set to two, and the lubrication components are distributed at the left and right ends of the transmission roller. The transmission roller extends to the inside of the oil collecting tank, and a sealing ring is fixedly connected to the inner side of the ring plate. The outer side of the transmission roller is fitted with the inner side of the sealing ring of the ring plate, and the outer side of the transmission roller is fixedly connected to the inner side of the bearing body.

[0010] As a further optimization of the present invention, the right side of the oil collecting tank is fixedly connected to a return oil pipe, a through hole is opened on the inner side of the oil collecting tank near the return oil pipe, the inner side of the oil collecting tank is a hollow structure, the inner side of the oil collecting tank is connected to the inner side of the return oil pipe through the through hole, and the front end of the return oil pipe is fixedly connected to the bottom end of the filter assembly.

[0011] As a further optimization of the present invention, a mounting hole is provided on the inner side of the lubrication box near the oil nozzle, a plurality of oil nozzles are provided, the oil nozzles are aligned left and right with the bearing body, and the oil nozzles extend into the interior of the oil collecting tank.

[0012] As a further optimization of the present invention, the lubrication box is provided with a mounting groove on the inner side near the oil suction cylinder, the oil suction cylinder is fixedly connected to the inner side of the mounting groove of the lubrication box, the inner side of the oil suction cylinder is a hollow structure, the inner side of the oil suction cylinder is connected to the oil collecting tank, the oil suction cylinder is arranged at the bottom end of the oil collecting tank, and one end of the frame plate is fixedly connected to the outer side of the transmission roller.

[0013] As a further optimized content of the present invention, the filter assembly includes a vertical shell, a connecting hole is opened at the upper end of the vertical shell, a movable cylinder is fixedly connected to one side of the upper end of the vertical shell, a spring is fixedly connected to the inner side of the movable cylinder, a fixed cylinder is fixedly connected to the top end of the spring, an electromagnetic valve is fixedly connected to the inner side of the fixed cylinder, an insert cylinder is fixedly connected to the lower end of the vertical shell, and a filter is sleeved on the outer side of the insert cylinder.

[0014] As a further optimization of the present invention, a sealing ring is fixedly connected to the outside of the insert tube, the inside of the filter is fitted with the sealing ring of the insert tube, the inside of the movable tube is fixedly connected to the sealing ring, the upper end of the filter extends into the interior of the movable tube, the filter is fitted with the sealing ring of the movable tube, the outside of the fixed tube is fixedly connected to the sealing ring, and the sealing ring of the outside of the fixed tube is fitted with the inside of the movable tube.

[0015] As a further optimization of the present invention, the bottom end of the bifurcated tube is fixedly connected to the top end of the vertical shell, the inner side of the bifurcated tube is a hollow structure, the bifurcated tube is connected to the connecting hole, the connecting hole, the fixed cylinder and the inner side of the movable cylinder are connected, and the number of the filter and the fixed cylinder are both two.

[0016] Control method of a paper machine control device with load fluctuation suppression function,

[0017] When the wear of the bearing body is reduced and the service life of the bearing body is increased, the driving motor is started to drive the second gear to rotate, and the second gear drives the transmission roller to rotate through the first gear, and the transmission roller is rotationally connected to the lubrication box through the bearing body. At the same time, the transmission roller rotates inside the ring plate, and lubricating oil is provided inside the oil collecting tank. When the transmission roller rotates, it drives the frame plate and the shaft wheel to rotate, and the shaft wheel and the frame plate are rotationally connected, and the annular frame and the base are fixedly connected. The soft oil pipe is a soft pipe, and the shaft wheel squeezes the soft oil pipe through the extrusion groove. The lubricating oil inside the oil collecting tank enters the interior of the filter assembly through the oil suction cylinder, the soft oil pipe and the bifurcated pipe, and is then transported to the interior of the oil return pipe through the filter assembly, and then transported to the interior of the oil collecting tank through the oil return pipe. At this time, the lubricating oil inside the oil collecting tank expands;

[0018] When filtering the lubricating oil, the lubricating oil enters the interior of the communicating hole through the bifurcated tube, then enters the interior of the fixed cylinder and the movable cylinder through the communicating hole, passes through the sealing ring provided on the outside of the fixed cylinder and the sealing ring provided on the inside of the movable cylinder, then enters the interior of the filter through the movable cylinder, is filtered by the filter, and is transported to the interior of the oil return pipe through the inserted cylinder, thereby achieving the function of filtering the lubricating oil;

[0019] When replacing the filter, the device is equipped with two filters, and one filter needs to be in the working state. The number of fixed cylinders and solenoid valves is the same. One solenoid valve is in the open state and the other is in the closed state. Push the movable cylinder upward to move the movable cylinder away from the upper end of the filter. At this time, the filter can be directly pulled out from the plug-in cylinder, and then the incoming filter is inserted into the plug-in cylinder. Release the movable cylinder, and under the action of the spring elastic force, the movable cylinder moves downward so that the movable cylinder is sleeved on the upper end of the filter.

[0020] When the low-pass filter is working, it "filters" the high-frequency components in the input signal and outputs a smooth signal that retains the main information. By setting appropriate parameters, the low-pass filter obtains the following characteristics: when the torque of the main transmission branch fluctuates, after filtering by the low-pass filter, the slave transmission branch will not respond quickly to the fluctuation of the main transmission torque; the phase delay characteristic of the filter is used to stagger the response time of the main transmission fluctuation; the frequency of reading the torque value of the main transmission branch is reduced. Through the above principles, the low-pass filter function block reduces the impact of the load fluctuation of the main transmission branch on the slave transmission branch, and at the same time avoids the reverse impact of the load fluctuation of the slave transmission branch on the main transmission branch.

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

[0022] 1. The present invention provides a lubricating assembly and an oil delivery assembly to achieve continuous lubrication of the bearing body, ensuring that the lubricating oil effectively enters the interior of the bearing, reducing bearing wear during rotation. This lubrication method not only extends the service life of the bearing, but also avoids equipment vibration problems caused by bearing wear, thereby significantly improving the production efficiency of the papermaking machine and the stability of equipment operation, and reducing equipment maintenance costs and repair frequency;

[0023] 2. In the present invention, the filter provided in the device can effectively remove mechanical impurities in the lubricating oil, ensuring the cleanliness of the lubricating oil. Clean lubricating oil can further increase the service life and rotation stability of the bearing body, reduce the risk of equipment failure caused by impurities, thereby ensuring the continuous and stable operation of the papermaking machine and improving the quality of paper products and production efficiency.

[0024] 3. In the present invention, by providing a fixed cylinder, a movable cylinder and an insert cylinder, the device adopts a non-stop replacement method, which avoids the equipment from being shut down due to filter replacement and ensures the continuity of equipment operation. This replacement method can complete the filter replacement without affecting normal production, improves production efficiency, reduces economic losses caused by equipment downtime, and reduces the workload and maintenance costs of maintenance personnel;

[0025] 4. In the present invention, by providing a low-pass filter, the device can effectively reduce the impact of load fluctuations of the main transmission section on the slave transmission section, while avoiding the reverse impact of load fluctuations of the slave transmission section on the main transmission section. This functional block ensures the stability and operating efficiency of the entire paper machine transmission system through characteristics such as slow dynamic response, phase delay and attenuation of high-frequency signals, improves paper quality, and reduces the risk of equipment failure and production interruption caused by transmission system fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the transmission assembly structure of the present invention;

[0028] Figure 3 This is a structural schematic diagram of the oil collecting tank of the present invention;

[0029] Figure 4 It is a schematic diagram of the cross-section structure of the lubrication box of the present invention;

[0030] Figure 5 Schematic diagram of the cross-section structure of the oil delivery assembly of the present invention;

[0031] Figure 6 This is a schematic diagram of the oil return pipe structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the fuel injection nozzle structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the shaft wheel structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the cross-section structure of the housing of the present invention;

[0035] Figure 10 It is a schematic diagram of the cutaway structure of the movable cylinder of the present invention.

[0036] In the figure: 1, transmission assembly; 11, drying cylinder body; 12, transmission roller; 13, first gear; 14, second gear; 15, drive motor;

[0037] 2. Low-pass filter;

[0038] 3. Lubrication assembly; 31. Base; 32. Lubrication box; 33. Oil collecting box; 34. Oil collecting tank; 35. Oil nozzle; 36. Bearing body; 37. Ring plate; 38. Oil return pipe;

[0039] 4. Oil delivery assembly; 41. Ring frame; 42. Soft oil pipe; 43. Shaft wheel; 44. Frame plate; 45. Extrusion trough; 46. Oil suction cylinder; 47. Bifurcated pipe;

[0040] 5. Filter assembly; 51. Vertical shell; 52. Connecting hole; 53. Movable cylinder; 54. Spring; 55. Fixed cylinder; 56. Solenoid valve; 57. Filter; 58. Insert cylinder. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] See also Figure 1-10 , the present invention provides a technical solution:

[0044] A paper machine control device with load fluctuation suppression function and a control method thereof include a transmission component 1, a low-pass filter 2 and a lubrication component 3. An oil delivery component 4 is fixedly connected to one side of the lubrication component 3, and a filter component 5 is fixedly connected to the front end of the lubrication component 3. The lubrication component 3 includes a base 31, a lubrication box 32 is fixedly connected to the top of the base 31, an oil collecting box 33 is fixedly connected to one side of the lubrication box 32, an oil collecting groove 34 is provided on the inside of the lubrication box 32, an oil nozzle 35 is fixedly connected to the inside of the lubrication box 32, a bearing body 36 and a ring plate 37 are fixedly connected to the inside of the oil collecting groove 34, the oil delivery component 4 includes an annular frame 41, a soft oil pipe 42 is fixedly connected to the inside of the annular frame 41, the soft oil pipe 42 is in contact with the outside of the extrusion groove 45, the extrusion groove 45 is provided on the outside of the shaft wheel 43, the inner side of the shaft wheel 43 is fixedly connected to the frame plate 44, and the two ends of the soft oil pipe 42 are respectively fixedly connected to an oil suction cylinder 46 and a bifurcation pipe 47.

[0045] As a further implementation of this solution, the transmission assembly 1 includes a drying cylinder body 11, with transmission rollers 12 fixedly connected to both ends of the drying cylinder body 11. A first gear 13 is fixedly connected to the outer side of the transmission roller 12. The outer side of the first gear 13 meshes with the outer side of the second gear 14. The inner side of the second gear 14 is fixedly connected to the end of the main shaft of the drive motor 15. Through the above arrangement, stable power transmission can be achieved, ensuring the efficient operation of the transmission system. At the same time, the design of the transmission roller 12 extending into the oil collecting tank 34, combined with the sealing effect of the sealing ring, effectively prevents lubricating oil leakage, ensures the normal operation of the lubrication system, and extends the service life of the equipment.

[0046] As a further implementation of this solution, the bottom end of the drive motor 15 is fixedly connected to the top of the base 31, the left side of the low-pass filter 2 is fixedly connected to the base 31, and the number of lubrication components 3 is set to two. The lubrication components 3 are distributed at the left and right ends of the transmission roller 12, and the transmission roller 12 extends into the interior of the oil collecting tank 34. A sealing ring is fixedly connected to the inner side of the ring plate 37, and the outer side of the transmission roller 12 is fitted with the inner side of the sealing ring of the ring plate 37. The outer side of the transmission roller 12 is fixedly connected to the inner side of the bearing body 36. Through the above arrangement, it is possible to ensure smooth circulation of lubricating oil in the system, so that the lubricating oil can be efficiently delivered to various parts that need lubrication, further improve lubrication efficiency, and reduce equipment wear;

[0047] As a further implementation of this solution, an oil return pipe 38 is fixedly connected to the right side of the oil collecting tank 33, and a through hole is opened on the inner side of the oil collecting tank 33 near the oil return pipe 38. The inner side of the oil collecting tank 33 is a hollow structure, and the inner side of the oil collecting tank 33 is connected to the inner side of the oil return pipe 38 through the through hole. The front end of the oil return pipe 38 is fixedly connected to the bottom end of the filter assembly 5, and a mounting hole is opened on the inner side of the lubrication box 32 near the oil nozzle 35. There are multiple oil nozzles 35, and the oil nozzles 35 are aligned left and right with the bearing body 36. The oil nozzles 35 extend to the inside of the oil collecting tank 34. Through the above arrangement, accurate lubrication of the bearing body 36 can be achieved, ensuring that the lubricating oil is evenly distributed to the key parts of the bearing, effectively reducing the wear of the bearing during operation, extending the service life of the bearing, and improving the stability of equipment operation;

[0048] As a further implementation of this solution, a mounting groove is opened on the inner side of the lubrication box 32 near the oil suction cylinder 46. The oil suction cylinder 46 is fixedly connected to the inner side of the mounting groove of the lubrication box 32. The inner side of the oil suction cylinder 46 is a hollow structure. The inner side of the oil suction cylinder 46 is connected to the oil collecting tank 34. The oil suction cylinder 46 is arranged at the bottom end of the oil collecting tank 34. One end of the frame plate 44 is fixedly connected to the outer side of the transmission roller 12. Through the above arrangement, the smooth delivery of the lubricating oil can be ensured. At the same time, the fixed connection between the frame plate 44 and the transmission roller 12 can drive the circulation of the lubricating oil, further improving the efficiency of the lubrication system and reducing the risk of equipment failure due to insufficient lubrication.

[0049] As a further implementation of this solution, the filter assembly 5 includes a vertical shell 51, a connecting hole 52 is opened at the upper end of the vertical shell 51, a movable cylinder 53 is fixedly connected to one side of the upper end of the vertical shell 51, a spring 54 is fixedly connected to the inner side of the movable cylinder 53, a fixed cylinder 55 is fixedly connected to the top of the spring 54, a solenoid valve 56 is fixedly connected to the inner side of the fixed cylinder 55, an insert cylinder 58 is fixedly connected to the lower end of the vertical shell 51, a filter 57 is sleeved on the outer side of the insert cylinder 58, a sealing ring is fixedly connected to the outer side of the insert cylinder 58, the inner side of the filter 57 is in contact with the sealing ring of the insert cylinder 58, the inner side of the movable cylinder 53 is fixedly connected with the sealing ring, the upper end of the filter 57 extends to the interior of the movable cylinder 53, and the filter 57 is in contact with the sealing ring of the movable cylinder 53 The outer side of the fixed cylinder 55 is fixedly connected with a sealing ring, and the sealing ring on the outer side of the fixed cylinder 55 fits with the inner side of the movable cylinder 53. The bottom end of the bifurcated tube 47 is fixedly connected to the top of the vertical shell 51. The inner side of the bifurcated tube 47 is a hollow structure. The bifurcated tube 47 is connected with the connecting hole 52. The connecting hole 52, the fixed cylinder 55 and the inner side of the movable cylinder 53 are connected. There are two filters 57 and two fixed cylinders 55. Through the above arrangement, the filtering and conveying functions of the lubricating oil can be effectively realized, and the smooth flow of the lubricating oil in the filtering system can be ensured. At the same time, two filters 57 and the fixed cylinder 55 are set, and the filter 57 can be replaced without stopping the machine, thereby further improving the operating efficiency and reliability of the equipment and reducing maintenance costs.

[0050] Working process: When the wear of the bearing body 36 is reduced and the service life of the bearing body 36 is increased, during the operation of the drying cylinder body 11, the drying cylinder body 11 can dry the paper, and the driving motor 15 is started to drive the second gear 14 to rotate. The second gear 14 drives the transmission roller 12 to rotate through the first gear 13. The transmission roller 12 is rotatably connected to the lubrication box 32 through the bearing body 36. At the same time, the transmission roller 12 rotates inside the ring plate 37. Lubricating oil is provided inside the oil collecting tank 34. The sealing ring on the inner side of the ring plate 37 can prevent the lubricating oil from overflowing. When the transmission roller 12 rotates, it drives the frame plate 44 and the shaft wheel 43 to rotate. The shaft wheel 43 is rotatably connected to the frame plate 44. The annular frame 41 is fixedly connected to the base 31. The soft oil pipe 42 is a hose. The shaft wheel 43 squeezes the soft oil pipe 42 through the extrusion groove 45, so that the lubricating oil is transported. The oil in the oil collecting tank 34 is sucked into the oil collecting tank 34 at the same time. The oil in the oil collecting tank 34 enters the interior of the filter assembly 5 through the oil suction cylinder 46, the soft oil pipe 42 and the bifurcated pipe 47, and is then transported to the interior of the oil return pipe 38 through the filter assembly 5. The oil in the oil collecting tank 33 is then transported to the interior of the oil return pipe 38 through the oil return pipe 38. At this time, the oil in the oil collecting tank 33 expands and is then sprayed from the oil nozzle 35 to the bearing body 36, thereby achieving the effect of lubricating the designated position of the bearing body 36. The lubricated oil will be concentrated in the oil collecting tank 34 to achieve the effect of recycling. Through the above principle, the device can continuously lubricate the bearing body 36 and ensure that the lubricating oil effectively enters the interior of the bearing body 36, ensuring that the bearing body 36 greatly reduces wear and tear when rotating, and reduces vibration caused by bearing wear that affects the service life.

[0051] When filtering the lubricating oil, some mechanical impurities will enter the lubricating oil during the rotation of the bearing body 36. By timely removal, the service life and rotation stability of the bearing body 36 can be improved. Based on the above principle, the lubricating oil enters the interior of the communicating hole 52 through the bifurcated tube 47, and then enters the interior of the fixed cylinder 55 and the movable cylinder 53 through the communicating hole 52. The sealing ring provided on the outside of the fixed cylinder 55 and the sealing ring provided on the inside of the movable cylinder 53 can prevent the lubricating oil from overflowing. Then, the lubricating oil enters the interior of the filter 57 through the movable cylinder 53, is filtered by the filter 57, and thus the impurities in the lubricating oil are removed. The lubricating oil is then transported to the interior of the oil return pipe 38 through the inserted cylinder 58, thereby achieving the function of filtering the lubricating oil.

[0052] When replacing the filter 57, in order to prevent the device from stopping operation, the device is provided with two filters 57, and one filter 57 needs to be in a working state. The number of the fixed cylinder 55 and the solenoid valve 56 is the same, one solenoid valve 56 is in an open state, and the other solenoid valve 56 is in a closed state. In this way, when the filter 57 that needs to be replaced is disassembled, the other filter 57 can work normally, and the movable cylinder 53 is pushed upward to make the movable cylinder 53 away from the upper end of the filter 57. At this time, the filter 57 can be directly pulled out from the plug cylinder 58, and the incoming filter 57 is inserted into the plug cylinder 58, and the movable cylinder 53 is loosened. Under the action of the elastic force of the spring 54, the movable cylinder 53 moves downward, so that the movable cylinder 53 is sleeved on the upper end of the filter 57, thereby achieving the effect of replacing the filter 57. This replacement method avoids equipment shutdown and ensures continuous operation.

[0053] When the low-pass filter 2 is working, the low-pass filter 2 is an electronic circuit or algorithm module that allows low-frequency signals to pass through while suppressing or attenuating high-frequency signals. Its main function is to output a smooth signal that retains the main information by "filtering" the high-frequency components in the input signal. By setting appropriate parameters, the low-pass filter 2 obtains the following characteristics: First, the dynamic response slowdown characteristic. When the torque of the main transmission division fluctuates, after filtering by the low-pass filter 2, the slave transmission division will not respond quickly to the fluctuation of the main transmission torque, thereby maintaining a stable input torque. Second, the phase delay characteristic. When the torque of the main transmission division fluctuates, after filtering by the low-pass filter 2, the slave transmission division will not respond quickly to the fluctuation of the main transmission torque, thereby maintaining a stable input torque. After filtering by low-pass filter 2, the phase delay characteristics of the filter are used to stagger the response time of the fluctuation of the main drive, so that the slave drive maintains a stable input torque and attenuates the high-frequency signal characteristics: when the torque of the main drive branch fluctuates, after filtering by low-pass filter 2, the frequency of reading the torque value of the main drive branch is reduced, so that the slave drive maintains a stable input torque. Through the above principle, the low-pass filtering function block can effectively reduce the impact of the load fluctuation of the main drive branch on the slave drive branch, and at the same time avoid the reverse impact of the load fluctuation of the slave drive branch on the main drive branch, thereby improving the stability and operating efficiency of the entire paper machine transmission system.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A paper machine control device with a load fluctuation suppression function, comprising a transmission component (1), a low-pass filter (2) and a lubrication component (3), characterized in that: One side of the lubricating component (3) is fixedly connected to an oil delivery component (4), and the front end of the lubricating component (3) is fixedly connected to a filter component (5); The lubrication assembly (3) comprises a base (31), a lubrication box (32) is fixedly connected to the top of the base (31), an oil collecting box (33) is fixedly connected to one side of the lubrication box (32), an oil collecting groove (34) is provided on the inner side of the lubrication box (32), an oil nozzle (35) is fixedly connected to the inner side of the lubrication box (32), and a bearing body (36) and a ring plate (37) are fixedly connected to the inner side of the oil collecting groove (34); The oil delivery assembly (4) includes an annular frame (41), the inner side of the annular frame (41) is fixedly connected to a soft oil pipe (42), the soft oil pipe (42) is in contact with the outer side of an extrusion groove (45), the extrusion groove (45) is provided on the outside of an axle wheel (43), the inner side of the axle wheel (43) is fixedly connected to a frame plate (44), and the two ends of the soft oil pipe (42) are respectively fixedly connected to an oil suction cylinder (46) and a bifurcated pipe (47).

2. The paper machine control device with load fluctuation suppression function according to claim 1, characterized in that: The transmission assembly (1) comprises a drying cylinder body (11), both ends of the drying cylinder body (11) are fixedly connected to transmission rollers (12), the outer side of the transmission roller (12) is fixedly connected to a first gear (13), the outer side of the first gear (13) is meshed with the outer side of the second gear (14), and the inner side of the second gear (14) is fixedly connected to the end of the main shaft of the driving motor (15).

3. The paper machine control device with load fluctuation suppression function according to claim 2, characterized in that: The bottom end of the driving motor (15) is fixedly connected to the top end of the base (31), the left side of the low-pass filter (2) is fixedly connected to the base (31), the number of the lubricating components (3) is set to two, and the lubricating components (3) are distributed at the left end and the right end of the transmission roller (12), the transmission roller (12) extends into the interior of the oil collecting tank (34), the inner side of the ring plate (37) is fixedly connected with a sealing ring, the outer side of the transmission roller (12) is in contact with the inner side of the sealing ring of the ring plate (37), and the outer side of the transmission roller (12) is fixedly connected to the inner side of the bearing body (36).

4. The paper machine control device with load fluctuation suppression function according to claim 1, characterized in that: The right side of the oil collecting tank (33) is fixedly connected to a return oil pipe (38); a through hole is provided on the inner side of the oil collecting tank (33) near the return oil pipe (38); the inner side of the oil collecting tank (33) is a hollow structure; the inner side of the oil collecting tank (33) is connected to the inner side of the return oil pipe (38) through the through hole; the front end of the return oil pipe (38) is fixedly connected to the bottom end of the filter assembly (5).

5. The paper machine control device with load fluctuation suppression function according to claim 1, characterized in that: The lubrication box (32) is provided with a mounting hole on the inner side close to the oil nozzle (35). The number of the oil nozzle (35) is set to be multiple. The oil nozzle (35) is aligned with the bearing body (36) on the left and right. The oil nozzle (35) extends into the interior of the oil collecting tank (34).

6. The paper machine control device with load fluctuation suppression function according to claim 1, characterized in that: The lubrication box (32) is provided with a mounting groove on the inner side close to the oil suction cylinder (46). The oil suction cylinder (46) is fixedly connected to the inner side of the mounting groove of the lubrication box (32). The inner side of the oil suction cylinder (46) is a hollow structure. The inner side of the oil suction cylinder (46) is connected to the oil collecting tank (34). The oil suction cylinder (46) is arranged at the bottom end of the oil collecting tank (34). One end of the frame plate (44) is fixedly connected to the outer side of the transmission roller (12).

7. The paper machine control device with load fluctuation suppression function according to claim 1, characterized in that: The filter assembly (5) comprises a vertical shell (51), a communicating hole (52) is provided at the upper end of the vertical shell (51), a movable cylinder (53) is fixedly connected to one side of the upper end of the vertical shell (51), a spring (54) is fixedly connected to the inner side of the movable cylinder (53), a fixed cylinder (55) is fixedly connected to the top end of the spring (54), a solenoid valve (56) is fixedly connected to the inner side of the fixed cylinder (55), an insert cylinder (58) is fixedly connected to the lower end of the vertical shell (51), and a filter (57) is sleeved on the outer side of the insert cylinder (58).

8. The paper machine control device with load fluctuation suppression function according to claim 7, characterized in that: The outer side of the insert cylinder (58) is fixedly connected with a sealing ring, the inner side of the filter (57) is in contact with the sealing ring of the insert cylinder (58), the inner side of the movable cylinder (53) is fixedly connected with a sealing ring, the upper end of the filter (57) extends into the interior of the movable cylinder (53), the filter (57) is in contact with the sealing ring of the movable cylinder (53), the outer side of the fixed cylinder (55) is fixedly connected with a sealing ring, and the sealing ring on the outer side of the fixed cylinder (55) is in contact with the inner side of the movable cylinder (53).

9. The paper machine control device with load fluctuation suppression function according to claim 7, characterized in that: The bottom end of the bifurcated tube (47) is fixedly connected to the top end of the vertical shell (51). The inner side of the bifurcated tube (47) is a hollow structure. The bifurcated tube (47) is in communication with the communicating hole (52). The communicating hole (52), the fixed cylinder (55) and the inner side of the movable cylinder (53) are in communication. The number of the filter (57) and the number of the fixed cylinder (55) are both two.

10. The control method of a paper machine control device with a load fluctuation suppression function according to claim 1, characterized in that: When the wear of the bearing body (36) is reduced and the service life of the bearing body (36) is increased, the driving motor (15) is started to drive the second gear (14) to rotate, and the second gear (14) drives the transmission roller (12) to rotate through the first gear (13), and the transmission roller (12) is connected to the lubrication box (32) through the bearing body (36). At the same time, the transmission roller (12) rotates inside the ring plate (37), and the oil collecting tank (34) is provided with lubricating oil. When the transmission roller (12) rotates, the frame plate (44) and the shaft wheel (43) are driven to rotate, and the shaft wheel (43) and the frame plate (44) are connected to the frame plate (43). The plates (44) are rotatably connected, the annular frame (41) and the base (31) are fixedly connected, the soft oil pipe (42) is a soft hose, the shaft wheel (43) squeezes the soft oil pipe (42) through the squeezing groove (45), and the lubricating oil inside the oil collecting tank (34) enters the interior of the filter assembly (5) through the oil suction cylinder (46), the soft oil pipe (42) and the bifurcated pipe (47), and is then transported to the interior of the oil return pipe (38) through the filter assembly (5), and then transported to the interior of the oil collecting tank (33) through the oil return pipe (38). At this time, the lubricating oil inside the oil collecting tank (33) expands; When filtering the lubricating oil, the lubricating oil enters the interior of the communicating hole (52) through the bifurcated tube (47), enters the interior of the fixed cylinder (55) and the movable cylinder (53) through the communicating hole (52), passes through the sealing ring provided on the outside of the fixed cylinder (55) and the sealing ring provided on the inside of the movable cylinder (53), enters the interior of the filter (57) through the movable cylinder (53), is filtered by the filter (57), and is transported to the interior of the oil return pipe (38) through the inserted cylinder (58), thereby achieving the function of filtering the lubricating oil; When the filter (57) is replaced, the device is provided with two filters (57), and one filter (57) needs to be in a working state. The number of fixed cylinders (55) and electromagnetic valves (56) is the same, one electromagnetic valve (56) is in an open state, and the other electromagnetic valve (56) is in a closed state. The movable cylinder (53) is pushed upward to move the movable cylinder (53) away from the upper end of the filter (57). At this time, the filter (57) can be directly pulled out from the plug cylinder (58), and the incoming filter (57) is inserted into the plug cylinder (58). The movable cylinder (53) is loosened, and under the action of the elastic force of the spring (54), the movable cylinder (53) moves downward, so that the movable cylinder (53) is sleeved on the upper end of the filter (57); When the low-pass filter (2) is working, it "filters" the high-frequency components in the input signal and outputs a smooth signal that retains the main information. By setting appropriate parameters, the low-pass filter (2) obtains the following characteristics: when the torque of the main transmission section fluctuates, after being filtered by the low-pass filter (2), the slave transmission section will not respond quickly to the fluctuation of the main transmission torque; by utilizing the phase delay characteristic of the filter, the time of responding to the fluctuation of the main transmission is staggered, and the frequency of reading the torque value of the main transmission section is reduced. Through the above principle, the low-pass filter function block reduces the influence of the load fluctuation of the main transmission section on the slave transmission section, and at the same time avoids the reverse influence of the load fluctuation of the slave transmission section on the main transmission section.

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