CN115479628A - Method and system for monitoring and reducing deflection of supporting wheel of rotating body in horizontal plane - Google Patents
Method and system for monitoring and reducing deflection of supporting wheel of rotating body in horizontal plane Download PDFInfo
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Abstract
The invention discloses a method and a system for monitoring and reducing deflection of a riding wheel of a rotating body on a horizontal plane, wherein 1 pressure sensor is arranged in an oil circuit of a catch wheel hydraulic system of the rotating body; installing 1 distance measuring sensor parallel to the axis of the rotating body near the end plane of one fixed structural part of the rotating body, and sending the position of the measured axial displacement of the rotating body to a computer system by the distance measuring sensor; respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller; each measuring sensor is respectively used for monitoring a characteristic signal generated by the axial force specific load of the rotating body born by each riding wheel so as to monitor the horizontal plane skew of the riding wheel needing to be adjusted. The accurate calibration of the riding wheel on the horizontal plane can be realized only by rotating the rotating body equipment in one direction, the accidents of bearing bush burning and kiln stopping of the riding wheel caused by the overload of the axial force of the riding wheel are obviously reduced and eliminated, and the method is suitable for any type of rotary kiln equipment.
Description
Technical Field
The invention belongs to the field of automatic detection and monitoring of large-scale rotary calcining equipment, and particularly relates to a system for measuring and adjusting the axial force of a riding wheel of a rotating body, in particular to a method for monitoring, adjusting and calibrating the horizontal deflection of the riding wheels of a rotary kiln with 2 or more gears and a meter system for online detection and monitoring of the axial force of the riding wheel.
Background
The rotating body mechanical apparatus includes: rotary kilns, drying rotary kilns, cooling rotary kilns, etc. The rotary cement kiln is an important firing device in the industries of cement, nonferrous and ferrous metallurgy, chemical industry, refractory materials and the like, generally, a multi-gear riding wheel supporting cylinder body with 2 gears or more continuously operates for a long time, and the length of the kiln body is about 70 meters. The rotary kiln has a small installation inclination relative to the horizontal plane, so that the kiln can generate axial thrust on each supporting riding wheel due to gravity. In order to avoid axial movement of the rotary kiln, all the riding wheels bear the axial thrust of the rotary kiln. In order to make the axes of the supporting wheels of the rotary kiln spatially parallel to the central line of the cylinder, the spatial positions of the axes of the supporting wheels need to be regularly and precisely measured. In the long-term operation of the kiln, due to the reasons of uneven settlement of kiln piers and riding wheel bases, offset and error adjustment of the spatial positions of the riding wheels, bending deformation of a kiln cylinder and the like, the axial force of individual riding wheels is overloaded, so that the end face of a bearing bush of the riding wheel is in contact with the thrust plate surface of the shaft thereof, the friction and the heating cause the bearing burning fault, and finally the production stop accident of the rotary kiln is caused. Taking a cement rotary kiln with 5000 tons of daily output as an example, the cost of replacing one supporting roller is about 30 ten thousand yuan, the working period of replacing one supporting roller is about 2 days at least, and the yield loss of the kiln is about more than hundred thousand yuan per day. The faults of riding wheel axial force overload tile burning and production stopping account for about 50 percent of the total production stopping accidents of the kiln, and cause huge economic loss for cement rotary kiln enterprises.
The conventional spatial position measurement is the mainstream technology for calibrating the axes of the rotary kiln and the riding wheel at present, after the rotary kiln runs for several years, the riding wheel does not have the surface with the original regular shape as the measurement reference, the real-time information feedback of the axial force does not exist in the process of adjusting the riding wheel, the accuracy of the adjustment cannot be proved, and the deflection of the riding wheel on the horizontal plane is adjusted only by the subjective feeling of people. Therefore, the traditional spatial position measurement precision can not meet the actual requirement of riding wheel adjustment all the time.
At present, few technical researches on monitoring of axial force of a riding wheel are carried out at home and abroad, and only the U.S. philips Kiln Services inc (Phillips Kiln Services inc.) applies for several related U.S. invention patents internationally, and the latest representative of the U.S. invention patents is the U.S. patent office's number of U.S. patent publication "method and System for adjusting the riding wheel skew in the horizontal plane" (System and method for setting roller skew) on 9, 26, 2013: US 20130247687Al. The monitoring system is characterized in that an angle inclination sensor is fixedly arranged on all supporting roller shells (parallel to the supporting roller axes) of the rotary kiln, and the inclination sensors are respectively connected with a computer processor of the monitoring system. The principle of the system for monitoring and adjusting the horizontal plane deflection and the axial force of the riding wheel of the rotary kiln is as follows:
when the rotary kiln rotates clockwise for a period of time, a computer processor of the system measures an average value of the inclination data of all the riding wheels on the vertical plane, namely a first thrust data value; when the rotary kiln rotates anticlockwise for the same time period, the computer processor measures another average value of the angle inclination data of all the supporting wheels on the vertical plane, namely a second thrust data value; the computer processor calculates the amplitude difference between the first thrust characteristic data value and the second thrust characteristic data value of each riding wheel; and sequentially adjusting the inclined position of one bearing horizontal plane of the riding wheel of the rotary kiln serial number 1 until the amplitude difference between the first thrust data value and the second thrust data value of the riding wheel is lower than a preset threshold value. The next idler is adjusted in sequence until all the idlers are adjusted to the neutral position of the axial thrust in the horizontal plane, namely, the axis of each idler is basically parallel to the central line of the kiln cylinder in space.
The prior patent technologies of the above-mentioned several usa or europe have common problems:
(1) The above patent is carried out on the premise that the rotary kiln must be capable of bidirectional rotation, but in more than 90% of the rotary kilns all over the world including china and abroad, they can only rotate in one direction, but cannot rotate in both directions. Therefore, none of the above patents can be applied to 90% of the rotary kilns all over the world, and the practicality thereof is greatly limited.
(2) The existing invention uses an angle sensor to monitor the inclination change of the riding wheel on the vertical plane, and particularly requires the minimum measurement accuracy of the angle inclination sensor to be 1 second. Because the rotary kiln riding wheel works in the open air, and severe environments such as open-air sunlight exposure, heavy rain wetting, air humidity, large humidity change, high temperature of 70 ℃ in summer, low temperature of-10 ℃ in winter, serious dust and debris and the like exist on site, the angle sensor needs high precision and must be durable. Therefore, the angle sensor is necessarily expensive to manufacture (at least 0.5-1.0 ten thousand yuan/piece).
Disclosure of Invention
The invention mainly solves the problems that: the method solves the defects of the prior rotary kiln riding wheel calibration method and the prior related invention patents, can realize the accurate calibration of the riding wheel on the horizontal plane only by rotating the rotary body equipment to one direction, obviously reduces and eliminates the accidents of bearing bush burning and kiln stopping of the riding wheel caused by the overload of the axial force of the riding wheel, and is suitable for any type of rotary kiln equipment.
In order to solve the technical problems, the invention adopts the following technical scheme:
a system for monitoring or reducing the inclination of a plurality of riding wheels of a rotating body in a horizontal plane during operation is disclosed, wherein the rotating body is supported by the riding wheels arranged on the left and right sides of the lower part of each wheel belt through an outer wheel belt of a cylinder; the method is characterized in that:
in a mode of not changing the structure of a wheel blocking hydraulic system, 1 pressure sensor is arranged in an oil path of the wheel blocking hydraulic system of the rotating body, and the pressure sensor is arranged to send a measured pressure signal to a computer system in a wireless or wired mode;
in a mode of not changing the structure of the rotating body, 1 distance measuring sensor is arranged near the end plane of one fixed structural part of the rotating body in parallel with the axis of the rotating body, and the distance measuring sensor is arranged to send the position of the axial displacement of the measured rotating body to the computer system in a wireless or wired mode; the fixed structural part is a large gear ring or a catch wheel sleeved on a rotating body;
respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller in a mode of not changing the structure of the supporting rollers;
each measuring sensor is connected with the computer system in a wireless or wired mode and is used for monitoring characteristic signals generated by the axial force specific load of the rotating body, which are born by each riding wheel.
In the above technical solution, the measuring sensor is a displacement sensor or an inclination sensor;
when the displacement sensors are adopted, each displacement sensor is arranged at the axial end face of one side of the riding wheel in parallel with the axis of the riding wheel, and the end face is positioned at the end plane of one end of each riding wheel shaft, or at the end plane of one end of the body structure of the riding wheel, or at the end plane of one end of the wheel width structure of the riding wheel; respectively monitoring function signals of an axial distance difference value of each riding wheel in real time, wherein the axial distance difference value is a difference value between the middle point of a riding wheel shaft and the axial force neutral point of the riding wheel; the function signal comprises a distance difference value and a positive sign, and the absolute value of the distance difference value is in direct proportion to the axial force load generated by the rotating body on each riding wheel; the sign of the distance difference is used for judging the direction of the thrust of each riding wheel to the rotating body;
when the inclination sensors are adopted, each inclination sensor is arranged on a certain position of the supporting roller shell in parallel with the axis of the respective supporting roller; the function signal of the change difference value of the current axial inclination angle of each riding wheel and the ideal zero angle position is respectively monitored in real time, the function signal comprises the axial inclination angle difference value and the signs of the inclination angles, and the absolute value of the axial inclination angle difference value is in direct proportion to the axial force load generated by the rotating body on each riding wheel; the sign of the inclination angle is used for judging the direction of the thrust of each riding wheel to the rotating body;
the number of the displacement sensors or the inclination sensors is at least the same as the total number of all riding wheels of the rotating body.
In the above technical solution, the measuring sensors are displacement sensors, the computer system monitors function signals of axial distance difference values of each riding wheel in real time by connecting each displacement sensor, respectively, and the axial distance difference value is a difference value between a center point of a riding wheel shaft and a "neutral point" of axial force of the riding wheel; wherein, the 'neutral point' of the axial force of the riding wheel is expressed as (GL + GH)/2, and GH and GL are the clearance values of the riding wheel and the high-end bearing bush and the low-end bearing bush respectively; the lower end and the higher end are arranged along the axial direction of the rotating body.
In the technical scheme, the 1 pressure sensor can be detached without changing the structure of the wheel blocking hydraulic system; the 1 distance measuring sensor for measuring the axial position of the rotating body can be detached without changing the structure of the rotating body; the measuring sensors can be detached without changing the structure of the riding wheel; the rotary body is a rotary kiln with more than or equal to 2 groups of wheel belts and riding wheel groups, and the left riding wheel and the right riding wheel are in a group.
In the above technical solution, the measuring sensor is a displacement sensor of non-contact magnetoelectric, laser, or photoelectric induction type, or a displacement sensor of contact grating capacitive grating type, or electromagnetic capacitive grating induction type; or an electronic inclination angle sensor or an electrolytic inclination angle sensor;
the distance measuring sensor is a non-contact magnetoelectric, laser, photoelectric or ultrasonic induction type distance sensor or a contact grating, capacitive grating or electromagnetic capacitive grating induction type displacement sensor;
the 1 pressure sensor is a digital pressure sensor.
In the technical scheme, the pressure sensor, the distance measuring sensor and all the measuring sensors are respectively connected and communicated with a computer system through wired physical signals, wireless signals or combined electronic lines thereof; the pressure sensor, the distance measuring sensor and all the measuring sensors are powered by rechargeable batteries or wired power supplies.
A method of monitoring the inclination of a plurality of idlers of a rotating body in operation in a horizontal plane, wherein a system for monitoring or reducing the inclination of a plurality of idlers of a rotating body in operation in a horizontal plane as described in any one of the preceding claims is used, the method comprising the steps of:
in a mode of not changing the structure of a wheel blocking hydraulic system, 1 pressure sensor is arranged in an oil circuit of the wheel blocking hydraulic system of the rotating body, and the pressure sensor sends a measured pressure signal to a computer system in a wireless or wired mode;
1 distance measuring sensor is arranged near the end plane of a fixed structural part of the rotating body in parallel to the axis of the rotating body in a mode of not changing the structure of the rotating body, and the distance measuring sensor sends the position of the axial displacement of the measured rotating body to the computer system in a wireless or wired mode; the fixed structural part is a large gear ring or a catch wheel sleeved on a rotating body;
respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller in a mode of not changing the structure of the supporting rollers;
each measuring sensor is connected with the computer system in a wireless or wired mode and is used for measuring a characteristic signal corresponding to the axial thrust load of the rotating body borne by each riding wheel of the rotating body;
when the measuring sensor adopts a displacement sensor, the characteristic signal is used for representing a function signal of a difference value between the midpoint of the idler shaft and the axial force neutral point of the idler shaft, when the midpoint of the idler shaft is greater than the axial position of the axial force neutral point, the axial thrust of the idler to the idler belt and the rotating body to the lower end shaft in operation is represented, and the idler is positioned at the high end position and needs to be adjusted to move to the lower end;
when the measuring sensor adopts an inclination sensor, the characteristic signal is used for representing a function signal of the 'neutral zero-angle azimuth' of the riding wheel shaft and the change of the axial inclination angle of the riding wheel shaft, and when the rotator generates axial thrust to the riding wheel, the inclination sensor is used for measuring the difference value and the direction of the inclination angle of the axial force borne by the riding wheel shaft; the absolute value of the difference value of the axial inclination angles is in direct proportion to the axial force load generated by the rotating body on the riding wheel; the positive sign and the negative sign of the inclination angle are used for judging the direction of the thrust of each riding wheel to the rotating body; when the inclination sensor detects that the inclination angle faces the lower end direction of the supporting wheel, the supporting wheel is pushed to the lower end by the rotating body, and the direction of the inclination angle is positive.
A method of reducing in-operation swivel idler skewing in a horizontal plane, using any of the above-described systems for monitoring or reducing in-operation swivel idler skewing in a horizontal plane, the method comprising the steps of:
in a mode of not changing the structure of a wheel blocking hydraulic system, 1 pressure sensor is arranged in an oil circuit of the wheel blocking hydraulic system of the rotating body, and the pressure sensor sends a measured pressure signal to a computer system in a wireless or wired mode;
1 distance measuring sensor is arranged near the end plane of a fixed structural part of the rotating body in parallel to the axis of the rotating body in a mode of not changing the structure of the rotating body, and the distance measuring sensor sends the axial displacement position of the measured rotating body to the computer system in a wireless or wired mode; the fixed structural part is a large gear ring or a catch wheel sleeved on a rotating body;
respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller in a mode of not changing the structure of the supporting rollers;
each measuring sensor is respectively connected with the computer system in a wireless or wired mode and is used for measuring a characteristic signal corresponding to the axial thrust load of the rotating body born by each riding wheel of the rotating body,
when the measuring sensor adopts a displacement sensor, the characteristic signal is used for representing a function signal of a difference value between the midpoint of the riding wheel shaft and the axial force neutral point of the riding wheel shaft, when the axial midpoint is positioned in the high-end direction of the axial force neutral point, the axial thrust of the riding wheel to the wheel belt and the rotating body to the low end in operation is represented, and the riding wheel is positioned at the high end and the horizontal plane of the riding wheel needs to be adjusted to be inclined;
the low end and the high end are arranged along the axial direction of the rotating body, and the horizontal plane in which the horizontal plane is inclined is vertical to the axial direction of the rotating body;
the middle point of the real-time riding wheel shaft of each riding wheel is positioned in a proper range of the low-end downhill of the 'neutral point' of the riding wheel by adjusting the inclined angle and the direction of all riding wheels on the horizontal plane;
when the measuring sensor adopts an inclination sensor, the characteristic signal is used for representing the signal of the change of the 'ideal neutral zero angle azimuth' of the riding wheel shaft and the axial inclination angle of the riding wheel shaft, and when the rotator generates axial thrust to the riding wheel, the inclination sensor is used for measuring the difference and the direction of the inclination angle of the axial force borne by the riding wheel shaft; the absolute value of the difference value of the axial inclination angles is in direct proportion to the axial force load generated by the rotating body on the riding wheel; the positive sign and the negative sign of the inclination angle are used for judging the direction of the thrust of each riding wheel to the rotating body; when the inclination sensor detects that the inclination angle is towards the direction of the lower end of the riding wheel, the riding wheel is pushed to the lower end by the rotating body, and the direction of the inclination angle is positive, namely the axial midpoint of the riding wheel is in a proper range of the lower end downhill of the neutral point.
The method for reducing the inclination of the plurality of riding wheels of the rotating body in the horizontal plane during operation further comprises the step of judging and adjusting according to a pressure value signal sent to the computer system by the pressure sensor, and when the pressure value is controlled to be within a set pressure range, the following steps of adjusting are carried out on each riding wheel according to the sequence of each supporting wheel belt:
(a) At a first belt, aiming at least one bearing of one idler of the belt, adjusting the skew direction of the bearing in a horizontal plane until the axial middle point of the idler is moved to be within a proper range of the lower end of the axial force neutral point;
at a first belt, aiming at least one bearing of another idler of the belt, adjusting the horizontal skew direction of the bearing until the axial middle point of the idler is moved to be within a proper range of the lower end of the axial force neutral point;
(b) Repeating the step (a), and sequentially operating the riding wheels of each wheel belt according to the wheel belt serial numbers of the second wheel belt and the third wheel belt until the adjustment of at least one bearing of all the riding wheels at each wheel belt in the inclined direction of the horizontal plane is completed; and the axial middle points of all the riding wheels are moved to be within a proper range of the lower end of the position of the axial force neutral point, namely all the riding wheels give a certain axial thrust to the rotating body in the high end direction in rotation.
Preferably, the pressure value sent to the computer system by the pressure sensor is controlled within the range of 4-6Mpa, and each riding wheel is adjusted according to the steps.
In the technical scheme, the horizontal plane deflection of the supporting roller at the high end or the low end of the supporting roller at one side is adjusted or reduced by adjusting the high-end bolt or the low-end bolt at one side of the supporting roller.
Compared with the prior related patent technology, the invention has the following beneficial effects:
1. the applicability is wide. The invention only needs the rotating body equipment to rotate towards one direction, and does not need to rotate in two directions. The invention is therefore applicable to all rotary bodies including any type of rotary kiln plant.
2. The axial force real-time feedback function of the riding wheel is provided, and the measuring principle is simple. The measuring principle of the invention is that according to the principle of the mechanical acting force and the counterforce in pairs, when the riding wheel has slight deflection on the horizontal plane during operation and pushes the kiln body to go up slope, the riding wheel is in the down slope. Therefore, the displacement sensor can be used for conveniently monitoring the axial force proportion value of each riding wheel and judging the direction of each riding wheel. The invention has simple operation, is irrelevant to the skill of an operator and is convenient for popularization and application.
3. The anti-interference and cost performance are higher. The displacement sensor is used for monitoring the axial force proportion value and the judgment direction of the riding wheel compared with the inclined sensor, so that the riding wheel is simpler, more convenient and more reliable, and the anti-interference performance and the price performance ratio are higher. In the rotary kiln field environment: the industrial displacement sensor can normally work for a long time under the conditions of open-air sunshine exposure, heavy rain wetting, large humidity change, temperature change from-10 ℃ to 80 ℃ and severe dust and debris. Under the condition of achieving the same monitoring accuracy and anti-interference performance, the cost of the displacement sensor is reduced to about one tenth of that of the inclination sensor; the anti-interference and reliability of the displacement sensor are improved by more than 2-5 times.
4. And multi-parameter monitoring and comprehensive functions are added. Increasing the pressure value of a hydraulic system for monitoring the blocking wheel of the rotating body, so that the deflection of each riding wheel on the horizontal plane adjusts the respective axial force to establish a real-time feedback relation with the hydraulic total pressure of the blocking wheel; the axial position parameter of the monitoring kiln body is added, when the kiln exceeds the normal axial displacement range of the kiln, automatic alarm can be given in advance, and the serious accident that the kiln falls accidentally is prevented.
5. I.e. installed and used. All the measuring and sensing units of the system can be powered by rechargeable batteries, and are connected and communicated with a computer system in a wireless electronic signal mode. The system saves the complex workload of installing wired wiring on site, avoids the measurement data error caused by possible damage of a wired communication cable, improves the reliability of the system and reduces the maintenance cost.
In summary, compared with the traditional riding wheel spatial position calibration measurement technology, the monitoring and adjusting method is revolutionary and fundamental change, has the riding wheel axial force real-time feedback function, and improves the calibration precision by more than 5 times. Compared with the prior art, the method and the system have the functions of monitoring the pressure of the catch wheel hydraulic system and the axial position of the kiln body and also have the function of feeding back the axial force of the riding wheel in real time. The method and the system of the invention become a monitoring system and an adjusting tool which have multi-parameter feedback, namely installation and use, simple and effective operation and low cost in the adjustment of reducing the inclination of the horizontal plane of the riding wheel of the rotary kiln. If the method is applied to calibrating and adjusting the riding wheel of the kiln, the heating bush burning production stop accidents of the riding wheel caused by axial force overload can be obviously reduced or eliminated, and the method has important engineering significance for ensuring the long-term safe operation of the kiln.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic diagram (right side view) of a rotary kiln structure and a monitoring system arrangement of the present invention.
Fig. 2 is a schematic view (top view) of the monitoring system connection arrangement of the present invention.
FIG. 3 is a schematic view of the measurement of the axial force and displacement of the gravity of the rotary kiln on the riding wheel at the right side of the rotary kiln.
FIG. 4 is a schematic view of the right riding wheel structure of the rotary kiln and the installation of a displacement sensor for measuring axial force.
In the drawings, the reference numbers correspond to the following: 1-rotary kiln, 2-wheel belt, 3-left riding wheel, 4-right riding wheel, 5-cylinder, 6-kiln axis, 7-hydraulic catch wheel, 8-large gear ring, 9-distance measuring sensor, 10-kiln pier, 11-base, 12-hydraulic oil circuit pressure sensor, 13-left axial force measuring sensor, 14-right axial force measuring sensor, 15-high end right bolt, 16-low end right bolt, 17-upper end bearing bush, 18-lower end bearing bush, 19-riding wheel axis, 20-monitoring system, 21-microcomputer system, 22-communication line, 23-shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, referring to fig. 1, the rotary kiln 1 mainly comprises a cylinder 5, a belt 2, a left riding wheel 3 and a right riding wheel 4 (see the left riding wheel 3a-3d and the right riding wheel 4a-4d in the top view of fig. 2), a hydraulic catch wheel 7, a large gear ring 8, and the like. A plurality of wheel belts 2 are movably sleeved outside a cylinder body 5, the whole rotary kiln 1 is supported by a riding wheel group through the wheel belts 2, and a left riding wheel 3 and a right riding wheel 4 are arranged on a base 11 and are fixed on a kiln pier 10.
Referring to fig. 3, the drum 5 of the rotary kiln 1 is installed at an inclination angle α to the horizontal plane, and the material in the drum 5 flows downward by gravity during rotation. Due to the component force F of the gravity G of the rotary kiln 1 in the direction of the kiln axis 6, each riding wheel bears different axial thrust forces, wherein the riding wheels 4 bear the axial force F 1 . One or more hydraulic catch wheels 7, see fig. 2, contact the side of the belt 2 to limit the slipping of the drum 5 from the idler due to gravity.
Referring to fig. 1 and 4, under the condition of not changing the structure of all the riding wheels, a displacement measuring sensor 14 is arranged beside all the riding wheels 4 (or on the shell thereof) on the right side of the kiln body in parallel with each right riding wheel axis 19; similarly, referring to fig. 2, a measuring sensor 13 and a measuring sensor 14 are arranged on all the riding wheels 3 (or on the shell thereof) on the left side of the kiln body in parallel to the axis of each left riding wheel (see the left riding wheel axis mounting sensors 13a-13d and 14a-14d in the top view of fig. 2).
The measuring sensors 13 and 14 can also be conventional inclination sensors or strain force sensors, which can measure the axial force F of the idler 1 The corresponding characteristic signal. In the idler 4 as shown in fig. 4, the inclination sensor 14 is typically placed at the lower end shaft of the idlerOn the outer shell 23 of the tile 18.
Of course, the measuring sensors 13 and 14 should preferably be non-contact (magnetoelectric, laser, or photoelectric induction type), or contact (grating, or electromagnetic capacitive induction type) displacement sensors, etc. For example, referring to FIG. 4, a displacement sensor 14 is mounted at a lower end of the right side of the kiln near the idler 4 parallel to the idler axis 19 to measure the axial force F of the idler 1 The corresponding characteristic signal.
For example, see FIG. 3,G H And G L The gap values of the riding wheel 4 and the upper end bearing bush 17 and the lower end bearing bush 18 are respectively. The thrust neutral position of the idler shaft is (G) L +G H )/2. The lower end gap G between the lower end of the shaft of the riding wheel 4 and the lower end bearing bush 18 can be monitored by the displacement sensor 14 L . When the riding wheel 4 pushes the wheel belt 2 (and the cylinder 5) to the high-end shaft in operation, the riding wheel 4 is at the low end. At this time, the measured low end gap G of the displacement sensor 14 L Should be G L <(G L +G H )/2。
Referring to fig. 4, the skew of the idler 4 (high-end skew S) can be faced horizontally by adjusting the high-end right bolt 15 or the low-end right bolt 16 1 Or low-end skew S 2 ) Making minor adjustments once the idler has passed its neutral position of axial thrust (G) L +G H ) The direction of the thrust generated by the idler is reversed, and the idler itself begins to move in the direction of its high end. The measured low end gap of the displacement sensor 14 should be G L >(G L +G H )/2. According to the same principle, the real-time low-end clearance of each riding wheel is G by adjusting the inclined angle and the direction of all the riding wheels on the horizontal plane L <(G L +G H ) And/2, namely the axial middle points of the rotary kiln are all in a proper range of the 'neutral point' low end downhill direction, each running riding wheel provides a certain axial thrust force for the rotary kiln 1 to the high end uphill direction.
Referring to fig. 2, the communication line 22 connects the microcomputer system 21 to all the displacement sensors 13 and 14 for measuring the axial force of the idler by combining or selecting a physical wired signal and a wireless signal. The computer system 21 can then monitor the respective characteristic signal for each idler axial force load.
Without changing the structure of the hydraulic catch wheel 7, 1 hydraulic oil circuit pressure sensor 12 is arranged in the oil circuit and sends a measured pressure signal to a microcomputer system 21 through a (wireless or wired) communication line 22. Under the condition of not changing the structure of the kiln body 1, 1 distance measuring sensor 9 (which can be a non-contact magnetoelectric, laser, photoelectric, ultrasonic induction type or contact capacitance and optical deletion or magnetoelectric induction type displacement sensor) is arranged in parallel with the kiln axis 6 near a certain 1 end plane of a fixed structural part (such as a large gear ring 8 or a catch wheel 7) of the cylinder body 5 of the rotary kiln 1, and sends a measured axial real-time position signal of the cylinder body 5 returning to the kiln 1 to a microcomputer system 21 through a (wireless or wired) communication line 22.
The communication link 22 preferably selects the manner of wireless transmitter and wireless receiver to connect the computer system 21 with all measurement sensor assemblies. All measurement sensor components to which the monitoring system 20 is connected are powered by rechargeable batteries or a wired power source.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A system for monitoring or reducing the inclination of a plurality of riding wheels of a rotating body in a horizontal plane during operation is disclosed, wherein the rotating body is supported by the riding wheels arranged on the left and right sides of the lower part of each wheel belt through an outer wheel belt of a cylinder; the method is characterized in that:
in a mode of not changing the structure of a wheel blocking hydraulic system, 1 pressure sensor is arranged in an oil way of the wheel blocking hydraulic system of the rotating body, and the pressure sensor is set to send a measured pressure signal to a computer system in a wireless or wired mode;
in a mode of not changing the structure of the rotating body, 1 distance measuring sensor is arranged near the end plane of a fixed structural part of the rotating body in parallel to the axis of the rotating body, and the distance measuring sensor is arranged to send the axial displacement position of the measured rotating body to the computer system in a wireless or wired mode; the fixed structural part is a large gear ring or a catch wheel sleeved on a rotating body;
respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller in a mode of not changing the structure of the supporting rollers;
each measuring sensor is connected with the computer system in a wireless or wired mode and is used for monitoring characteristic signals generated by the axial force specific load of the rotating body, which are born by each riding wheel.
2. The system for monitoring or reducing in-operation swivel idler skewing in the horizontal plane as recited in claim 1, wherein said measurement sensor is a displacement sensor or a tilt sensor;
when the displacement sensors are adopted, each displacement sensor is arranged at the axial end face of one side of the riding wheel in parallel with the axis of the riding wheel, and the end face is positioned on the end plane of one end of each riding wheel shaft, or on the end plane of one end of the shaft body structure of the riding wheel, or on the end plane of one end of the spoke structure of the riding wheel; respectively monitoring function signals of an axial distance difference value of each riding wheel in real time, wherein the axial distance difference value is a difference value between the middle point of a riding wheel shaft and the axial force neutral point of the riding wheel; the function signal comprises a distance difference value and a positive sign, and the absolute value of the distance difference value is in direct proportion to the axial force load generated by the rotating body on each riding wheel; the sign of the distance difference is used for judging the direction of the thrust of each riding wheel to the rotating body;
when the inclination sensors are adopted, each inclination sensor is arranged on a certain position of the supporting roller shell in parallel with the axis of the respective supporting roller; the function signal of the change difference value of the current axial inclination angle of each riding wheel and the ideal zero angle position is respectively monitored in real time, the function signal comprises the axial inclination angle difference value and the signs of the inclination angles, and the absolute value of the axial inclination angle difference value is in direct proportion to the axial force load generated by the rotating body on each riding wheel; the positive sign and the negative sign of the inclination angle are used for judging the direction of the thrust of each riding wheel to the rotating body;
the number of the displacement sensors or the inclination sensors is at least the same as the total number of all the riding wheels of the rotating body.
3. The system for monitoring or reducing in-service rotor tip-off in a horizontal plane as set forth in claim 1, wherein said measuring sensors are displacement sensors and the computer system monitors in real time a function signal of an axial distance difference between a center point of the idler shaft and an axial force "neutral" of the idler, respectively, for each idler by connecting each displacement sensor; wherein, the 'neutral point' of the axial force of the riding wheel is expressed as (GL + GH)/2, and GH and GL are the clearance values of the riding wheel and the high-end bearing bush and the low-end bearing bush respectively; the lower end and the higher end are arranged along the axial direction of the rotating body.
4. The system for monitoring or reducing the inclination of a plurality of riding wheels of a rotating body in a horizontal plane during operation according to claim 1, wherein the 1 pressure sensor can be disassembled without changing the structure of a hydraulic system of a catch wheel; the 1 distance measuring sensor for measuring the axial position of the rotating body can be detached without changing the structure of the rotating body; the measuring sensors can be detached without changing the structure of the riding wheel; the rotary body is a rotary kiln with more than or equal to 2 groups of wheel belts and riding wheel groups, and the left riding wheel and the right riding wheel are in a group.
5. The system for monitoring or reducing the inclination of a plurality of riding wheels of a rotating body in operation in a horizontal plane according to claim 1, wherein the measuring sensor is a displacement sensor of non-contact magnetoelectric, laser, photoelectric induction type, or contact grating capacitive grating type, or electromagnetic capacitive grating induction type; or an electronic tilt angle sensor or an electrolytic tilt angle sensor;
the distance measuring sensor is a non-contact magnetoelectric, laser, photoelectric or ultrasonic induction type distance sensor or a contact grating, capacitive grating or electromagnetic capacitive grating induction type displacement sensor;
the 1 pressure sensor is a digital pressure sensor.
6. The system for monitoring or reducing in-operation swivel body jolt in a horizontal plane as claimed in claim 1, wherein said pressure sensor and said distance measuring sensor and all measuring sensors are each in communication with a computer system via wired physical signals, wireless signals, or a combination thereof electronically; the pressure sensor, the distance measuring sensor and all the measuring sensors are powered by rechargeable batteries or wired power supplies.
7. A method of monitoring the inclination of a plurality of idlers of a rotating body in operation in a horizontal plane, characterized in that a system for monitoring or reducing the inclination of a plurality of idlers of a rotating body in operation in a horizontal plane as claimed in any one of claims 1 to 6 is used, which comprises the steps of:
in a mode of not changing the structure of a wheel blocking hydraulic system, 1 pressure sensor is arranged in an oil circuit of the wheel blocking hydraulic system of the rotating body, and the pressure sensor sends a measured pressure signal to a computer system in a wireless or wired mode;
1 distance measuring sensor is arranged near the end plane of a fixed structural part of the rotating body in parallel to the axis of the rotating body in a mode of not changing the structure of the rotating body, and the distance measuring sensor sends the position of the axial displacement of the measured rotating body to the computer system in a wireless or wired mode; the fixed structural part is a large gear ring or a catch wheel sleeved on a rotating body;
respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller in a mode of not changing the structure of the supporting rollers;
each measuring sensor is connected with the computer system in a wireless or wired mode and is used for measuring a characteristic signal corresponding to the axial thrust load of the rotating body borne by each riding wheel of the rotating body;
when the measuring sensor adopts a displacement sensor, the characteristic signal is used for representing a function signal of a difference value between the midpoint of the riding wheel shaft and the axial force neutral point of the riding wheel shaft, when the midpoint of the riding wheel shaft is greater than the axial position of the axial force neutral point, the characteristic signal represents the axial thrust of the riding wheel to the wheel belt and the rotating body to the lower end in operation, and the riding wheel is positioned at the high end and needs to be adjusted to move to the lower end;
when the measuring sensor adopts an inclination sensor, the characteristic signal is used for representing a function signal of the 'neutral zero angle direction' of the riding wheel shaft and the change of the axial inclination angle of the riding wheel shaft, and when the rotator generates axial thrust to the riding wheel, the inclination sensor is used for measuring the difference and the direction of the inclination angle of the axial force borne by the riding wheel shaft; the absolute value of the difference value of the axial inclination angles is in direct proportion to the axial force load generated by the rotating body on the riding wheel; the positive sign and the negative sign of the inclination angle are used for judging the direction of the thrust of each riding wheel to the rotating body; when the inclination sensor detects that the inclination angle faces the lower end direction of the supporting wheel, the supporting wheel is pushed to the lower end by the rotating body, and the direction of the inclination angle is positive.
8. A method of reducing in-operation swivel idler skewing in a horizontal plane, characterized by using the system for monitoring or reducing in-operation swivel idler skewing in a horizontal plane as claimed in any one of claims 1-6, the method comprising the steps of:
in a mode of not changing the structure of a wheel blocking hydraulic system, 1 pressure sensor is arranged in an oil circuit of the wheel blocking hydraulic system of the rotating body, and the pressure sensor sends a measured pressure signal to a computer system in a wireless or wired mode;
1 distance measuring sensor is arranged near the end plane of a fixed structural part of the rotating body in parallel to the axis of the rotating body in a mode of not changing the structure of the rotating body, and the distance measuring sensor sends the position of the axial displacement of the measured rotating body to the computer system in a wireless or wired mode; the fixed structural part is a large gear ring or a catch wheel sleeved on a rotating body;
respectively installing a measuring sensor on each supporting roller shell of the rotating body, or beside a shaft body of each supporting roller, or beside a spoke structure of each supporting roller in a mode of not changing the structure of the supporting rollers;
each measuring sensor is respectively connected with the computer system in a wireless or wired mode and is used for measuring a characteristic signal corresponding to the axial thrust load of the rotating body borne by each riding wheel of the rotating body,
when the measuring sensor adopts a displacement sensor, the characteristic signal is used for representing a function signal of a difference value between the midpoint of the riding wheel shaft and the axial force neutral point of the riding wheel shaft, when the axial midpoint is positioned in the high-end direction of the axial force neutral point, the axial thrust of the riding wheel to the wheel belt and the rotating body to the low end in operation is represented, and the riding wheel is positioned at the high end and the horizontal plane of the riding wheel needs to be adjusted to be inclined;
the low end and the high end are arranged along the axial direction of the rotating body, and the horizontal plane in which the horizontal plane is inclined is vertical to the axial direction of the rotating body;
the middle point of the real-time riding wheel shaft of each riding wheel is positioned in a proper range of the low end downhill of the 'neutral point' of the riding wheel by adjusting the inclined angle and the direction of all riding wheels on the horizontal plane;
when the measuring sensor adopts an inclination sensor, the characteristic signal is used for representing the signal of the change of the 'ideal neutral zero angle azimuth' of the riding wheel shaft and the axial inclination angle of the riding wheel shaft, and when the rotator generates axial thrust to the riding wheel, the inclination sensor is used for measuring the difference and the direction of the inclination angle of the axial force borne by the riding wheel shaft; the absolute value of the difference value of the axial inclination angles is in direct proportion to the axial force load generated by the rotating body on the riding wheel; the positive sign and the negative sign of the inclination angle are used for judging the direction of the thrust of each riding wheel to the rotating body; when the inclination sensor detects that the inclination angle is towards the direction of the lower end of the riding wheel, the riding wheel is pushed to the lower end by the rotating body, and the direction of the inclination angle is positive, namely the axial midpoint of the riding wheel is in a proper range of the lower end downhill of the neutral point.
9. The method of reducing in-service rotor drag in a horizontal plane as set forth in claim 8, further comprising the step of making a decision to adjust based on a pressure value signal from said pressure sensor to said computer system, wherein when the pressure value is controlled to be within a set pressure range, each of the idlers is adjusted in the order of each of the support belt by the steps of:
(a) At a first belt, aiming at least one bearing of one idler of the belt, adjusting the skew direction of the bearing in a horizontal plane until the axial middle point of the idler is moved to be within a proper range of the lower end of the axial force neutral point;
at a first belt, aiming at least one bearing of another idler of the belt, adjusting the horizontal skew direction of the bearing until the axial middle point of the idler is moved to be within a proper range of the lower end of the axial force neutral point;
(b) Repeating the step (a), and sequentially operating the riding wheels of each wheel belt according to the wheel belt serial numbers of the second wheel belt and the third wheel belt until the adjustment of at least one bearing of all the riding wheels at each wheel belt in the inclined direction of the horizontal plane is completed; and the axial middle points of all the riding wheels are moved to be within a proper range of the lower end of the position of the axial force neutral point, namely all the riding wheels give a certain axial thrust to the rotating body in the high end direction in rotation.
10. The method of reducing horizontal skew of a plurality of idlers of a rotating body according to claim 8, wherein the horizontal skew of the idler at the upper end or the lower end of the idler is adjusted or reduced by adjusting the upper end bolt or the lower end bolt of the idler at a certain side of the idler.
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| CN202211025781.0A CN115479628B (en) | 2022-08-25 | 2022-08-25 | Method and system for monitoring and reducing skew of rotary body riding wheel in horizontal plane |
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| CN202211025781.0A CN115479628B (en) | 2022-08-25 | 2022-08-25 | Method and system for monitoring and reducing skew of rotary body riding wheel in horizontal plane |
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