CN109612624A - A kind of rotary kiln bottom support roller radial force multi-point detection method - Google Patents
A kind of rotary kiln bottom support roller radial force multi-point detection method Download PDFInfo
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- CN109612624A CN109612624A CN201811432258.3A CN201811432258A CN109612624A CN 109612624 A CN109612624 A CN 109612624A CN 201811432258 A CN201811432258 A CN 201811432258A CN 109612624 A CN109612624 A CN 109612624A
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- support roller
- rotary kiln
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- normal pressure
- component
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
Abstract
A kind of rotary kiln bottom support roller radial force multi-point detection method, step 1, the analysis of normal pressure suffered by support roller；Step 2, the selection of force-detecting position；Step 3, computer is analyzed and processed the sensing data of acquisition, detects to multiple support roller stress of rotary kiln, if actually measured power is less than theoretical value, then it is assumed that support roller is aerial, needs to readjust support roller position, it is made to be in weight bearing situations；If actually measured power is greater than theoretical value, then it is assumed that rotary kiln is tilted towards the overweight direction of support roller, need to be adjusted support roller position in time, be made wheel stress balance；Can multiple support rollers of on-line real-time measuremen simultaneously radial force, or overload aerial to support roller provide prompt, guarantee rotary kiln long-term safety stable operation in time.
Description
Technical field
The invention belongs to test technique automatic fields, in particular to the multiple spot detection of rotary kiln bottom support roller radial force.
Background technique
For rotary kiln in the industrial production in occupation of very important status, operation conditions directly decides the effect of enterprise
Benefit, therefore the detection of rotary kiln seems most important to enterprise with maintenance." the analysis and inspection of cement rotary kiln support roller axially loaded
Survey " text points out that the detection of rotary kiln mainly includes the following aspects at present: the detection of rotary kiln axis, supporting roller of rotary kiln
The detection of position, the detection of supporting roller of rotary kiln axial force etc., currently, for supporting roller of rotary kiln force analysis be concentrated mainly on it is axial by
Power analysis and supporting force analysis, supporting roller of rotary kiln axial arrangement is complicated, and the research difficulty of axial force is larger, and the body of rotary kiln
Product quality is huge, and supporting force analysis is also only limited to theory analysis mostly.Both at home and abroad to supporting roller of rotary kiln force in radial research
Less, reality simultaneously has no the support roller radial direction force checking device that can be convenient application.Large-sized rotary kiln bearing group number is two gears or two
More than gear, cylinder is longer, and span is big between supporting-point, and the power of dispersion is not easy to monitoring and management, therefore, studies supporting roller of rotary kiln diameter
It is very necessary to power multi-point detection method.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of rotary kiln bottom support roller radial directions
Power multi-point detection method is monitored for the multi gear support roller operating status to rotary kiln bottom, keeps every grade of support roller stress normal,
Reference data is provided for the fault diagnosis of rotary kiln, prevents some support roller aerial or overload, ensures that rotary kiln long-term safety is steady
Fixed operation, improves its running rate.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of inspection of rotary kiln bottom support roller radial force multiple spot
Survey method, which comprises the following steps:
Step 1, normal pressure suffered by support roller is analyzed, and specific practice is:
According to the cylinder material of rotary kiln, material is how many and the tilt angle of rotary kiln analyzes gravity suffered by i-th grade of support roller
Load GiIn the component M perpendicular to wheel belt and support roller contact surfacei=GiCos α, and then stress decomposition is carried out, in the normal work of rotary kiln
In the case of work, suffered by support roller in vertical direction with 30 °, i.e. φ=30 °, then obtains i-th grade of unilateral support roller according to trigonometric function relationship
Normal pressure Fi=Mi/ 2cos φ, then normal pressure F suffered by i-th grade of unilateral support rolleriComponent f in the horizontal directioni=FiSin φ, the
Normal pressure F suffered by i grades of unilateral support rollersiComponent t in the vertical directioni=Ficosφ,tiThe earth, f are passed back by support roller pedestali
It is measured using multi-point detection method；
Variation rigidity continuous beam finite element model, the geometric parameter of segmentation definition beam element are established to rotary kiln, load solves
Gravitational load G suffered by each shelves support roller can be obtainediIn the component M perpendicular to wheel belt and support roller contact surfacei, i-th grade of unilateral support roller can be obtained
Suffered normal pressure are as follows:
Then normal pressure F suffered by i-th grade of unilateral support rolleriComponent f in the horizontal directioniAre as follows:
In formula: MiFor the component perpendicular to wheel belt and support roller contact surface perpendicular to wheel belt and support roller contact surface, GiFor gravity
Load, FiIt is wheel belt to the normal pressure on i-th grade of unilateral support roller surface；fiFor normal pressure F suffered by i-th grade of unilateral support roller surfaceiIn water
Square to component；tiFor normal pressure F suffered by i-th grade of unilateral support roller surfaceiComponent in the vertical direction；φ is rotary kiln bottom
The angle of portion's support roller and vertical direction；
Step 2, the selection of force-detecting position, specific practice are:
The analysis of component according to step 1 to normal pressure suffered by support roller in the horizontal direction, rotary kiln bottom support roller support
Adjustment bolt at be force-detecting position；2 sensors, the AD acquisition of sensor and single-chip microcontroller are set on the force-detecting position of each support roller
Translation interface is connected；
Step 3, computer is analyzed and processed the sensing data of acquisition, and specific practice is:
Multiple support roller stress of rotary kiln are detected, if actually measured power is less than point modeled in required horizontal direction
Power fiTheoretical value, then it is assumed that support roller is aerial, needs to readjust support roller position, it is made to be in weight bearing situations；If actually measured
Power is greater than the theoretical value, then it is assumed that rotary kiln is tilted towards the overweight direction of support roller, need to be adjusted support roller position in time, be made wheel
Stress balance.
The sensor uses spoke type pressure sensor.
The gradient slant setting of the cylinder 3%~4% of the rotary kiln.
For the cylinder of rotary kiln with 3%~4% gradient slant setting, support roller support device is its main support device,
It includes 3~9 groups of support roller support devices that rotary kiln is unusual according to length, and every group is known as one grade.The weight of kiln body passes through wheel belt
It is transmitted on support roller, is transmitted on pedestal eventually by bearing block.With 2 support rollers of shelves at left and right sides of kiln body and vertically at 30 °
Angle is symmetrically installed, and the normal pressure on unilateral support roller surface can be obtained by trigonometric function relationship analysis.Normal pressure suffered by support roller surface is into one
Step decomposes to horizontal direction and vertical direction, and the power of vertical direction passes the earth back by pedestal, and the power of horizontal direction reaches support roller
Adjustment bolt at, the detection position as chosen herein.Rotary kiln bottom support roller quantity is at least 3 grades, to prevent from holding in the palm individually
Unbalance stress is taken turns, the present invention carries out real-time online monitoring and analysis to the multiple support roller stress conditions in bottom simultaneously, constitutes rotary kiln
Bottom support roller radial force multi-point detection system.
Compared with prior art, the beneficial effects of the present invention are:
For monitoring the distribution of force of rotary kiln bottom support roller, rotary kiln running safety is ensured, including to rotary-kiln supporting
System structural analysis, supporting force size theory analysis, selection of measuring point manage rotary kiln bottom support roller force in radial
By analysis；For rotary kiln practical structures, multi-point detection method is devised, it can be simultaneously suffered by the multiple support rollers of on-line real-time measuremen
Radial force illustrates the distribution of force of rotary kiln bottom support roller；Sensor uses spoke type pressure sensor, is mounted on rotary kiln bottom
At the adjusting bolt of portion's support roller support.
The normal pressure that rotary kiln bottom support roller is subject to decomposes to level, by the way that force-detecting position is selected in rotary kiln bottom support roller branch
At the adjustment bolt of seat, the horizontal component of normal pressure suffered by support roller is detected.
Stress detection is carried out to multiple support rollers simultaneously, is distributed by force analysis, failure is carried out to the support roller of stress exception
Prompt.
The present invention provides a kind of rotary kiln bottom support roller radial force multi-point detection methods, while carrying out to multi-point radial power
Detection, illustrates the distribution of force of rotary kiln, solves the problem of barrel support point spacing is big, and power excessively disperses inconvenient monitoring.
To which the operating status to monitor the multiple support rollers in rotary kiln bottom provides real-time accurate data, keeps rotary kiln more efficient, pacify
It works entirely.
Detailed description of the invention
Fig. 1 is support roller Overall Analysis schematic diagram in rotary kiln bottom of the present invention.
Fig. 2 is support roller normal pressure decomposition diagram in rotary kiln bottom of the present invention.
Fig. 3 is force-detecting position position view of the present invention.
1- support roller in figure；2- wheel belt；3- cylinder of rotary kiln；4- rotary kiln bottom support roller support；5- support roller adjustment bolt；6-
Force-detecting position.
GiThe gravitational load that kiln body distribution comes is born for i-th grade of support roller；MiThe weight that kiln body distribution comes is born for i-th grade of support roller
Power load GiDecompose to the component perpendicular to wheel belt and support roller contact surface；NiThe gravity that kiln body distribution comes is born for i-th grade of support roller to carry
Lotus GiDecompose to the component downward along rotary kiln axis；α is the inclination angle of rotary kiln kiln body；FiIt is wheel belt to i-th grade of unilateral support roller
The normal pressure on surface；fiFor normal pressure F suffered by i-th grade of unilateral support roller surfaceiComponent in the horizontal direction；tiFor i-th grade of unilateral support
Normal pressure F suffered by wheel surfaceiComponent in the vertical direction；φ is the angle of rotary kiln bottom support roller and vertical direction.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
Referring to Fig. 1,2, by taking large size three keeps off rotary kiln as an example, according to rotary kiln material, material is how many and rotary kiln inclines
Rake angle can analyze gravitational load G suffered by i-th grade of support rolleriIn the component M perpendicular to wheel belt and support roller contact surfacei=GiCos α,
And then stress decomposition is carried out, under rotary kiln normal operation, support roller is in vertical direction with 30 °, i.e. φ=30 °, then basis
Trigonometric function relationship obtains normal pressure F suffered by i-th grade of unilateral support rolleri=Mi/ 2cos φ, then normal pressure F suffered by i-th grade of unilateral support rolleri
Component f in the horizontal directioni=FiS in φ, normal pressure F suffered by i-th grade of unilateral support rolleriComponent t in the vertical directioni=
Ficosφ,tiThe earth, f are passed back by support roller pedestaliIt is measured using this multi-point detection method；
Theory analysis is carried out to the support reaction of each shelves bearing, establishes rotary kiln model according to the actual situation, according to pertinent literature,
Rotary kiln is kept off to large size three and establishes variation rigidity continuous beam finite element model, the geometric parameter of segmentation definition beam element, load solves
Gravitational load G suffered by each shelves support roller can be obtainediIn the component M perpendicular to wheel belt and support roller contact surfacei, then available i-th grade of unilateral side
Normal pressure suffered by support roller are as follows:
Then normal pressure F suffered by i-th grade of unilateral support rolleriComponent f in the horizontal directioniAre as follows:
Above-mentioned analysis obtains the pressure that the multiple support rollers in rotary kiln bottom are born in normal operating conditions, practical to revolution
Multiple support roller stress of kiln are detected, if actually measured power is less than theoretical value, then it is assumed that support roller is aerial, needs to readjust support
Position is taken turns, it is made to be in weight bearing situations；If actually measured power is greater than theoretical value, then it is assumed that rotary kiln inclines towards the overweight direction of support roller
Tiltedly, support roller position need to be adjusted in time, makes wheel stress balance, and otherwise support roller is chronically at overweight state and is easy to cause uneasiness
Full accident.
Rotary kiln is kept off for large size three, totally 6 support roller load-bearing illustrate this in conjunction with attached drawing 3 below by taking first grade of support roller as an example
Multi-point detection method measurement point position.Normal pressure F suffered by i-th grade of unilateral support roller 1iComponent f in the horizontal directioniPass through revolution
The support 4 of kiln bottom portion support roller two sides reaches adjustment bolt 5,5 measuring forces at the adjustment bolt of support roller bottom support bracket, three gear revolutions
Totally 6 support rollers, each support roller are equipped with 2 spoke type pressure sensors to kiln, and force-detecting position at totally 12, then one share dynamometry at 12
Point.
Under rotary kiln normal operating conditions, same shelves two sides support roller stress should be at equilibrium state, if actually measured two
Side force is different, then it is assumed that rotary kiln is tilted along the side more than load-bearing, provides dangerous tip；The variation rigidity that rotary kiln is established is connected
Continuous beam finite element model can acquire the theoretical value f of each shelves support roller stress of rotary kilni, actually measured power and theoretical value fiIt compares,
If more than theoretical value fi, then support roller is in overload condition, if actually measured power is less than theoretical value fi, then support roller is in aerial state,
The method of adjustment of rotary kiln bottom support roller position is provided accordingly.The selection of multiple force-detecting positions, the operation to rotary kiln bottom support roller
State has carried out comprehensive monitoring, has ensured support roller good stable operation for a long time.
Claims (3)
1. a kind of rotary kiln bottom support roller radial force multi-point detection method, which comprises the following steps:
Step 1, normal pressure suffered by support roller is analyzed, and specific practice is:
According to the cylinder material of rotary kiln, material is how many and the tilt angle of rotary kiln analyzes gravitational load G suffered by i-th grade of support rolleri
In the component M perpendicular to wheel belt and support roller contact surfacei=GiCos α, and then stress decomposition is carried out, in rotary kiln normal operation
Under, support roller in vertical direction with 30 °, i.e. φ=30 °, then according to trigonometric function relationship obtain i-th grade of unilateral support roller suffered by normal pressure
Fi=Mi/ 2cos φ, then normal pressure F suffered by i-th grade of unilateral support rolleriComponent f in the horizontal directioni=FiSin φ, i-th grade of list
Normal pressure F suffered by the support roller of sideiComponent t in the vertical directioni=Ficosφ,tiThe earth, f are passed back by support roller pedestaliUsing more
Point detecting method measures；
Variation rigidity continuous beam finite element model, the geometric parameter of segmentation definition beam element are established to rotary kiln, load is solved and can be obtained
Gravitational load G suffered by each shelves support rolleriIn the component M perpendicular to wheel belt and support roller contact surfacei, can be obtained suffered by i-th grade of unilateral support roller
Normal pressure are as follows:
Then normal pressure F suffered by i-th grade of unilateral support rolleriComponent f in the horizontal directioniAre as follows:
In formula: MiFor the component perpendicular to wheel belt and support roller contact surface perpendicular to wheel belt and support roller contact surface, GiFor gravity load
Lotus, FiFor normal pressure, fiFor the component in horizontal direction；
Step 2, the selection of force-detecting position, specific practice are:
The analysis of component according to step 1 to normal pressure suffered by support roller in the horizontal direction, the tune of rotary kiln bottom support roller support
It is force-detecting position at whole bolt；2 sensors are set on the force-detecting position of each support roller, and the AD acquisition of sensor and single-chip microcontroller is converted
Interface is connected；
Step 3, computer is analyzed and processed the sensing data of acquisition, and specific practice is:
Multiple support roller stress of rotary kiln are detected, if actually measured power is less than the component f modeled in required horizontal directioni
Theoretical value, then it is assumed that support roller is aerial, needs to readjust support roller position, it is made to be in weight bearing situations；If actually measured power is big
In the theoretical value, then it is assumed that rotary kiln is tilted towards the overweight direction of support roller, need to be adjusted support roller position in time, be made wheel stress
Balance.
2. a kind of rotary kiln bottom support roller radial force multi-point detection method according to claim 1, which is characterized in that described
Sensor use spoke type pressure sensor.
3. a kind of rotary kiln bottom support roller radial force multi-point detection method according to claim 1, which is characterized in that described
Rotary kiln cylinder 3%~4% gradient slant setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432258.3A CN109612624A (en) | 2018-11-28 | 2018-11-28 | A kind of rotary kiln bottom support roller radial force multi-point detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432258.3A CN109612624A (en) | 2018-11-28 | 2018-11-28 | A kind of rotary kiln bottom support roller radial force multi-point detection method |
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Citations (8)
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|---|---|---|---|---|
| CN1055055A (en) * | 1990-03-17 | 1991-10-02 | 武汉工业大学 | A kind of measuring method of rotary kiln axis and measuring system |
| US6195856B1 (en) * | 1996-11-08 | 2001-03-06 | Sucker-Muller-Hacoba Gmbh & Co. | Method and device for warping with a cone sectional warper |
| CN1645025A (en) * | 2004-12-24 | 2005-07-27 | 湖南科技大学 | Portable checking and information optimizing decisioning systme for rotary furnace maintenance |
| CN200940997Y (en) * | 2006-08-10 | 2007-08-29 | 刘龙 | Static pressure bearer of rotary kiln |
| CN101050955A (en) * | 2006-04-06 | 2007-10-10 | 徐州工程学院 | Dynamic measuring method for rotary kiln tubular axis and measuring and control system |
| CN101349904A (en) * | 2008-09-02 | 2009-01-21 | 武汉理工大学 | Method and system for monitoring rotary kiln running state and adjusting method of kiln |
| CN205002765U (en) * | 2015-09-15 | 2016-01-27 | 邓州中联水泥有限公司 | Curved measuring device of rotary kiln |
| CN205316946U (en) * | 2015-12-01 | 2016-06-15 | 万喜华 | Interior hot type rotary kiln |
-
2018
- 2018-11-28 CN CN201811432258.3A patent/CN109612624A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055055A (en) * | 1990-03-17 | 1991-10-02 | 武汉工业大学 | A kind of measuring method of rotary kiln axis and measuring system |
| US6195856B1 (en) * | 1996-11-08 | 2001-03-06 | Sucker-Muller-Hacoba Gmbh & Co. | Method and device for warping with a cone sectional warper |
| CN1645025A (en) * | 2004-12-24 | 2005-07-27 | 湖南科技大学 | Portable checking and information optimizing decisioning systme for rotary furnace maintenance |
| CN101050955A (en) * | 2006-04-06 | 2007-10-10 | 徐州工程学院 | Dynamic measuring method for rotary kiln tubular axis and measuring and control system |
| CN200940997Y (en) * | 2006-08-10 | 2007-08-29 | 刘龙 | Static pressure bearer of rotary kiln |
| CN101349904A (en) * | 2008-09-02 | 2009-01-21 | 武汉理工大学 | Method and system for monitoring rotary kiln running state and adjusting method of kiln |
| CN205002765U (en) * | 2015-09-15 | 2016-01-27 | 邓州中联水泥有限公司 | Curved measuring device of rotary kiln |
| CN205316946U (en) * | 2015-12-01 | 2016-06-15 | 万喜华 | Interior hot type rotary kiln |
Non-Patent Citations (2)
| Title |
|---|
| 左岐 等: "回转窑机械运行状态监测系统及应用", 《中国科技信息》 * |
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Application publication date: 20190412 |