A method of determining the tendency of a rotary kiln roller to move

Abstract

The present application relates to rotary kiln technical field, disclose a kind of method for determining the trend of rotary kiln riding wheel placement, the extension line of the same gear to-be-measured riding wheel shaft center is made and extends to the riding wheel shaft of adjacent gear, the receiving point of extension line is obtained;The position of receiving point relative to the center line of the riding wheel shaft of adjacent gear is compared, if the extension line of the same gear is parallel or consistent, then the riding wheel placement meets the requirements, if not parallel or inconsistent, then the riding wheel placement does not meet the requirements;The extension line of different gear to-be-measured riding wheel shaft is made in turn, the position of receiving point relative to the center line of the riding wheel shaft of adjacent gear is compared, if the extension line on the same side of kiln body is parallel or consistent, then the riding wheel placement meets the requirements, if not parallel or inconsistent, then the riding wheel placement does not meet the requirements.Can judge whether the riding wheel shaft placement appears "big eight" or "small eight" condition, the trend of rotary kiln riding wheel placement can be quickly determined by this method.

Description

TECHNICAL FIELD

[0001] The present application relates to the rotary kiln technical field, especially to a method for determining the placement trend of the supporting wheel of a rotary kiln. BACKGROUND

[0002] The rotary kiln is a key equipment in the sintering production process, and protecting the supporting wheel shaft is particularly important for the safe operation of the rotary kiln. In the production process, to ensure that the rotary kiln can operate safely and stably for a long time, from the aspects of equipment maintenance and correct use, adjusting the supporting wheel is a top priority. There are three purposes for adjusting the supporting wheel: first, to enable the kiln body to move up and down along the axial direction normally according to the required rules, so as to ensure that the supporting wheel and the outer surface of the wheel belt are uniformly worn; second, to enable the center line of the rotary kiln cylinder to remain a straight line in the hot state, so as to make the supporting wheel and the wheel belt bear the force evenly and not produce overloading, thereby reducing power consumption; and third, to enable each supporting wheel to bear the load of the kiln body evenly, so as to ensure that no additional stress is generated and the machine parts are not damaged prematurely or are damaged.

[0003] After the rotary kiln is operated for a long time or the supporting wheel is adjusted, it is necessary to determine the placement position of the supporting wheel, so as to analyze the stress conditions of each component of the rotary kiln. In the past, at least three people were needed to measure the data, one person was needed to read and record, two people were needed to measure each point multiple times using a tape measure, and then data analysis was needed, which took at least six hours, was time-consuming and labor-intensive, and could not quickly obtain the information. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a method for determining the placement trend of the supporting wheel of a rotary kiln, which sequentially draws the extension lines of all the supporting wheel shafts to be measured, compares them with the center lines of the supporting wheel shafts of the adjacent gears, or further compares them with the reference line, and then determines whether the supporting wheel shaft placement appears a "big eight" or a "small eight". Using this method, a diagram showing the extension trend along the extension line can be drawn, and the result of the supporting wheel placement trend can be obtained more intuitively through the diagram.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0006] A method for determining the placement trend of the supporting wheel of a rotary kiln, comprising the following steps:

[0007] Draw the extension line of the center of the supporting wheel shaft of the same gear to be measured and extend it to the supporting wheel shaft of the adjacent gear to obtain the receiving point of the extension line; compare the position of the receiving point relative to the center line of the supporting wheel shaft of the adjacent gear, if the extension lines of the same gear are parallel or have the same trend, the supporting wheel placement meets the requirements, if they are not parallel or have different trends, the supporting wheel placement does not meet the requirements;

[0008] The extension line of the to-be-tested supporting wheel shaft is made in different gears in sequence, and the position of the receiving point relative to the center line of the supporting wheel shaft of the adjacent gear is compared. If the extension lines on the same side of the kiln body in different gears are parallel or have consistent trends, the supporting wheel placement meets the requirements. If the extension lines are not parallel or have inconsistent trends, the supporting wheel placement does not meet the requirements.

[0009] As a further implementation manner, a laser tool is used to make the extension line of the to-be-tested supporting wheel shaft. The end of the laser is used as the starting point of the extension line, and the laser point is used as the receiving point. The starting point to the receiving point is the extension line.

[0010] As a further implementation manner, the laser tool is fixed with a base at one end. The center of the base is provided with a protrusion. When the extension line is made, the base is matched with the center hole of the supporting wheel through the protrusion, so as to realize that the base is close to the center of the supporting wheel shaft and the laser is perpendicular to the end surface of the supporting wheel shaft.

[0011] As a further implementation manner, the base is matched with the supporting wheel shaft in a magnetic attraction mode.

[0012] As a further implementation manner, the receiving point is a receiving plate perpendicular to the reference line.

[0013] As a further implementation manner, a marker pen is used to make a mark at the receiving point, and then the extension line is compared with the reference line of the supporting wheel shaft placement.

[0014] As a further implementation manner, the distance d1 from the starting point of the first extension line to the reference line and the distance d2 from the receiving point to the reference line are measured, the distance d3 from the starting point of the second extension line to the reference line and the distance d4 from the receiving point to the reference line are measured, and whether the supporting wheel shaft placement meets the requirements is judged according to the data.

[0015] As a further implementation manner, the placement trend of the supporting wheel is judged according to the distances from the starting points and the receiving points of all the extension lines to the reference line.

[0016] As a further implementation manner, a laser tool is used to make the extension line of the to-be-tested supporting wheel shaft. Two laser tools are on the same straight line. The laser shot by the first laser tool is perpendicular to the end surface of the to-be-tested supporting wheel shaft and is on the same straight line with the axis of the end surface of the to-be-tested supporting wheel shaft. The laser shot by the second laser tool is used to make the extension line.

[0017] Alternatively, one laser tool capable of shooting two-way laser is used. The first laser is perpendicular to the end surface of the to-be-tested supporting wheel shaft and is on the same straight line with the axis of the end surface of the to-be-tested supporting wheel shaft. The second laser is used to make the extension line.

[0018] As a further implementation manner, the two laser tools or the laser tool capable of shooting two-way laser are installed on a tripod. The height of the tripod is adjustable. The laser tool is rotationally connected with the tripod.

[0019] The beneficial effects of the present application are as follows:

[0020] 1. The present application compares the position of the receiving point relative to the center line of the supporting wheel shaft of the adjacent gear, if the extension line of the same gear is parallel or consistent, the supporting wheel placement meets the requirements, if it is not parallel or consistent, the supporting wheel placement does not meet the requirements, whether the supporting wheel shaft placement appears "big eight" or "small eight" situation can be judged, and through this method, the placement trend of the rotary kiln supporting wheel can be quickly determined.

[0021] 2. The present application considers that the laser has high directivity, so that it can effectively transmit a long distance while ensuring that the focusing obtains extremely high power density, the divergence of the laser beam is extremely small, the beam is arranged in one direction, therefore, the efficiency is high and the precision can be ensured by using the laser tool as the extension line of the to-be-measured supporting wheel shaft.

[0022] 3. The present application utilizes the mode of comparing by emitting bidirectional laser at the same point, without positioning the laser tool on the supporting wheel shaft, and one of the lasers is used for positioning, so that the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute improper limitations on the present application.

[0024] Fig. 1 is a structure schematic diagram of a laser tool test in an embodiment of the present application.

[0025] Fig. 2 is an extension line extension trend diagram after measurement in an embodiment of the present application.

[0026] In the drawings: the mutual distance or size is exaggerated to show the position of each part, and the schematic diagram is only illustrative.

[0027] Wherein: 1. base, 2. laser point, 3. second supporting wheel shaft, 4. first supporting wheel shaft, 5. extension line. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] Example 1

[0030] Big eight characters: the extension line of the supporting wheel shaft on the two adjacent positions of the kiln body on the same side is not parallel or the placing trend is not consistent, for example, the supporting wheel of the left side 1st position gives the upward force to the kiln, and the supporting wheel of the 2nd position gives the downward force to the kiln, which are two opposite and contradictory forces, finally, which one gives the greater force is compared, thus the force on the kiln is not smooth, which can cause the extrusion of some parts of the kiln and the stretching of some parts, and mechanical accidents occur.

[0031] Small eight characters: the extension line of the two supporting wheel shafts on the same position of the kiln body is not parallel or the placing trend is not consistent, for example, the supporting wheel of the 1st position has left and right supporting wheels, the left supporting wheel gives the upward force, and the right supporting wheel gives the downward force, thus the forces on the left and right sides are opposite and contradictory, which can cause the aggravation of equipment wear, vibration, high temperature, kiln line bending and the like.

[0032] In a typical embodiment of the present application, referring to Figs. 1-2 a method for determining the placing trend of the supporting wheel of a rotary kiln, comprising the following steps:

[0033] drawing the extension line of the center of the supporting wheel shaft of the same position to be measured and extending to the supporting wheel shaft of the adjacent position to obtain the receiving point of the extension line; comparing the position of the receiving point relative to the center line of the supporting wheel shaft of the adjacent position, if the extension lines of the same position are parallel or the trends are consistent, the supporting wheel placing meets the requirements, if the extension lines are not parallel or the trends are not consistent, the supporting wheel placing does not meet the requirements;

[0034] drawing the extension lines of the supporting wheel shafts of different positions to be measured in turn, comparing the position of the receiving point relative to the center line of the supporting wheel shaft of the adjacent position, if the extension lines of the different positions on the same side of the kiln body are parallel or the trends are consistent, the supporting wheel placing meets the requirements, if the extension lines are not parallel or the trends are not consistent, the supporting wheel placing does not meet the requirements, judging whether the supporting wheel shaft placing appears the "big eight characters" or "small eight characters" condition, through the method, the placing trend of the supporting wheel of the rotary kiln can be quickly determined.

[0035] When drawing the extension line 5 of the center of the supporting wheel shaft to be measured, considering that the laser has high directionality, it can effectively transmit a long distance while ensuring that the focused power density is extremely high, the divergence of the laser beam is extremely small, and the beam is arranged in one direction, therefore, the laser tool is used to draw the extension line of the supporting wheel shaft to be measured, the laser end is used as the starting point of the extension line, and the starting point to the receiving point is the extension line.

[0036] As shown in Fig. 1 , it should be noted that, since the laser tool is not convenient to fix during testing, a base 1 is installed at the tail end of the laser tool, the base 1 is vertically arranged and fixedly connected with the laser tool, one sleeve is arranged on one side of the base 1, the sleeve is vertically arranged with the base 1, and the laser tool is fixed in the sleeve. A protrusion is arranged at the center position of the other side of the base, and the protrusion is used for clamping with the center hole of the supporting wheel, so that the base can be kept perpendicular to the supporting wheel shaft.

[0037] During testing, the base 1 is in close contact with the end face of the first support roller shaft 4 to ensure that the laser tool is on the axis at the center position of the support roller shaft. This allows the laser beam emitted by the laser tool to serve as an extension of the support roller shaft's axis. The laser point 2 strikes the second support roller shaft 3. The first and second support roller shafts 4 and 3 are adjacent and located on the same side of the kiln body. In this embodiment, the base 1 uses a magnetic attachment method to cooperate with the support roller shaft, further ensuring that the laser beam emitted by the laser tool can serve as an extension of the support roller shaft.

[0038] In this embodiment, the receiving point is the end face of the roller shaft on the same side and adjacent to the roller shaft to be tested, or it can be a receiving plate perpendicular to the baseline. The ultimate goal is to obtain a receiving point, and then obtain an extension line with a set distance, so that laser point 2 serves as the receiving point and the laser emitting end serves as the starting point.

[0039] After the laser point is fired, mark the receiving point (laser point 2) with a marker. Then compare the extension line 5 with the baseline of the roller shaft or with the center line of the roller shaft at the laser point.

[0040] like Fig. 2 As shown, taking the left support roller of gear 1 as an example, with the base pressed tightly against the axis of the left support roller of gear 1, laser point 2 is placed on the axis of the left support roller of gear 2. Observe the position of the laser point and the center line of the left support roller of gear 2. If the laser point is located to the left of the center line, it means that the left support roller of gear 1 has been deflected counterclockwise by the set angle, that is... Fig. 2 The extension trend of line 5 in the middle, if the laser point is located to the right of the center line, it means that the left support roller of gear 1 has deflected the set angle clockwise.

[0041] Similarly, the placement trend of the right-side support roller shaft in first gear is determined by measuring it in the same way. Fig. 2 The image shows that the right support roller shaft of gear 1 has rotated clockwise by a set angle. Comparing this to the extended line of the left support roller of gear 1, the extended lines of the two support roller shafts in gear 1 are not only not parallel, but their placement trends are also opposite, exhibiting a "small figure-eight" phenomenon. Therefore, a laser tool can be used to make a preliminary judgment on the placement trend of the support rollers.

[0042] If the right support roller shaft in gear 1 also deflects counterclockwise by the set angle, it is considered that the extension lines of the two support roller shafts in gear 1 have the same trend, thus meeting the requirement. It's understandable that in practical application, as long as the two support roller shafts in the same gear have the same placement trend, it's acceptable. Because rotary kilns operate for many years, wear varies, so as long as the trends are the same, the upward and downward forces of the kiln will not contradict each other. The two support roller shafts will not have the same trend but an excessively large angle between them, because the support roller shafts always operate in conjunction with the kiln body. If the angle between the two support roller shafts is too large, then one of the support roller shafts has already failed.

[0043] After testing gear 1, gears 2 and above were tested in sequence. When testing gear 2, the laser point could be aimed at gear 1 or gear 3. The judgment of distance was the same as above, based on the comparison between the laser point and the center line of the support roller shaft.

[0044] like Fig. 2 If the laser point is aimed at level 1, Fig. 2 In the second gear configuration, both the left and right support roller shafts rotate clockwise, and the second gear support roller does not exhibit a small "V" shape. However, the second gear and first gear support roller shafts show a large "V" shape because the extended lines of the left support rollers in the second gear and first gear do not follow the same trend. Fig. 2 For example, at this time, the placement of the left support roller in first gear should be adjusted so that the extension line of the left support roller in first gear is deflected clockwise by a set angle relative to the baseline. This solves both the "small figure eight" and "large figure eight" problems simultaneously.

[0045] It is understood that this embodiment uses a laser tool to quickly draw the extension line of the support roller shaft, and by comparing the laser point with the center line of the corresponding support roller shaft, a preliminary judgment on the placement trend of the support roller shaft can be quickly made, and the staff can make the next adjustment strategy for the support roller shaft accordingly.

[0046] To further ensure the accuracy of the measurement, actual data can be used as a reference.

[0047] like Fig. 2 As shown, at the starting point of the laser tool, the distance d1 from the starting point of the first extension line of the same gear to the baseline and the distance d2 from the receiving point to the baseline are measured. The distance d3 from the starting point of the second extension line to the baseline and the distance d4 from the receiving point to the baseline are measured. Based on the data, it is determined whether the placement of the roller shaft meets the requirements. Based on the distances from the starting point and receiving point of all extension lines to the baseline, the placement trend of the roller is determined.

[0048] If d1 + d3 = d2 + d4, this indicates that the two roller axles in the same gear position are aligned parallel to the baseline, or that the two roller axles are aligned in the same direction, and there is no "small eight" (a slight deviation in the horizontal plane). Comparing d1 and d2, or comparing d3 and d4, can determine whether the extended line of each roller axle is parallel to the baseline. In short, if d1 + d3 = d2 + d4, there is no "small eight" (a slight deviation in the horizontal plane) on the roller axles in the same gear position.

[0049] For whether there is a large eight o'clock between adjacent gears, for example, the distance from the center of the left side of the 2nd gear to the reference line at the supporting wheel shaft is d5, and the corresponding laser point is d6. According to d6 / d5 and d2 / d1, if both ratios are greater than 1 or both are less than 1, the placing trend is the same, and there is no large eight o'clock. If one ratio is greater than 1 and the other is less than 1, there is a large eight o'clock. Further, if the ratios are equal, it means that the extension line of the left side of the supporting wheel and the extension line of the left side of the 2nd gear not only have the same placing trend, but also are completely parallel. According to this method, the placing trend of all gears can be accurately tested, and the adjustment strategy for the placing trend of the supporting wheel shaft can be made according to the data.

[0050] It should be noted that the method of using a laser tool to mark a laser point 2 to determine the placing trend of the supporting wheel is a preliminary determination of the placing trend of the supporting wheel. In combination with the measured opening distance data or the distance data from the starting point and the receiving point to the reference line, the placing position of the supporting wheel can be more accurately and finely determined.

[0051] It can be understood that for this method of using a laser tool to determine the placing trend of the supporting wheel, a two-way laser can also be used to determine the placing trend of the supporting wheel.

[0052] The laser tool is used to make an extension line of the supporting wheel shaft. Two laser tools are on the same straight line. The laser of the first laser tool is perpendicular to the end face of the supporting wheel shaft and is on the same straight line as the axis of the end face of the supporting wheel shaft. The laser of the second laser tool is used to make an extension line. The two laser tools are installed on a tripod, the height of which is adjustable, and the laser tools are rotationally connected to the tripod.

[0053] This way of marking a two-way laser makes it unnecessary to position the laser tool on the axis of the supporting wheel shaft. The laser of the first laser tool is perpendicular to the end face of the supporting wheel shaft and is on the same straight line as the axis of the end face of the supporting wheel shaft, thereby achieving positioning of the second laser tool.

[0054] In another preferred example, a laser tool capable of marking a two-way laser can also be used. The first laser is perpendicular to the end face of the supporting wheel shaft and is on the same straight line as the axis of the end face of the supporting wheel shaft. The second laser is used to make an extension line, and the placing trend of the supporting wheel can also be determined.

[0055] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining the placement trend of rotary kiln support rollers, characterized in that, Includes the following steps: Draw an extension line from the center of the roller shaft to be tested in the same gear to the roller shaft in the adjacent gear, and obtain the receiving point of the extension line; compare the position of the receiving point relative to the center line of the roller shaft in the adjacent gear. If the extension lines of the same gear are parallel or have the same trend, the roller placement meets the requirements. If they are not parallel or have different trends, the roller placement does not meet the requirements. Draw the extension lines of the support roller shafts at different gears in sequence, and compare the position of the receiving point relative to the center line of the support roller shaft of the adjacent gear. If the extension lines on different gears on the same side of the kiln body are parallel or have the same trend, the placement of the support rollers meets the requirements. If they are not parallel or have different trends, the placement of the support rollers does not meet the requirements.

2. The method for determining the placement trend of rotary kiln support rollers according to claim 1, characterized in that, Using a laser tool, the extension line of the roller shaft to be tested is drawn, with the laser end as the starting point of the extension line and the laser point as the receiving point. The extension line is from the starting point to the receiving point.

3. The method for determining the placement trend of rotary kiln support rollers according to claim 2, characterized in that, The laser tool is fixed to a base at one end, and the base has a protrusion at the center. When extending the line, the base engages with the center hole of the support roller through the protrusion, so that the base is close to the axis of the support roller and the laser is perpendicular to the end face of the support roller axis.

4. The method for determining the placement trend of rotary kiln support rollers according to claim 3, characterized in that, The base is magnetically attached to the roller shaft.

5. The method for determining the placement trend of rotary kiln support rollers according to claim 2, characterized in that, The receiving point is obtained through a receiving plate perpendicular to the baseline.

6. A method for determining the placement trend of rotary kiln support rollers according to claim 4 or 5, characterized in that, Mark the receiving point with a marker, and then compare the extension line with the baseline where the roller axle is placed.

7. The method for determining the placement trend of rotary kiln support rollers according to claim 6, characterized in that, Measure the distance d1 from the starting point of the first extension line to the baseline and the distance d2 from the receiving point to the baseline in the same gear position. Measure the distance d3 from the starting point of the second extension line to the baseline and the distance d4 from the receiving point to the baseline. Based on the data, determine whether the placement of the roller shaft meets the requirements.

8. The method for determining the placement trend of rotary kiln support rollers according to claim 6, characterized in that, Based on the distances from the starting and receiving points of all extended lines to the baseline, determine the placement trend of all support rollers.

9. The method for determining the placement trend of rotary kiln support rollers according to claim 1, characterized in that, Using laser tools to draw the extension line of the roller shaft to be tested, the two laser tools are on the same straight line. The laser emitted by the first laser tool is perpendicular to the end face of the roller shaft to be tested and is on the same straight line as the axis of the end face of the roller shaft to be tested. The laser emitted by the second laser tool is used to draw the extension line. Alternatively, a laser tool capable of firing bidirectional lasers can be used. The first laser beam is perpendicular to the end face of the roller shaft to be tested and is in the same straight line as the axis of the end face of the roller shaft to be tested. The second laser beam is used to extend the line.

10. The method for determining the placement trend of rotary kiln support rollers according to claim 9, characterized in that, Two laser tools, or laser tools capable of emitting bidirectional lasers, are mounted on a tripod. The height of the tripod is adjustable, and the laser tools are rotatably connected to the tripod.

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