A rotary kiln shell coaxiality measuring device

Abstract

The invention discloses a rotary kiln cylinder coaxiality measuring device, comprising two measuring frames and a rotary kiln cylinder located on the two measuring frames, wherein a limit slot is provided at the rear of the measuring frames, and the invention relates to the technical field of rotary kiln cylinders. The rotary kiln cylinder coaxiality measuring device moves two measuring frames to the side of the measuring frames, controls a motor to drive a threaded rod to rotate, and causes the threaded rod to drive a plurality of support rods to contact the rotary kiln cylinder, causes the limit mechanism to be limited on the rotary kiln cylinder as a whole, causes the center of the limit frame to be at the same level as the center point of the rotary kiln cylinder, thereby causing the infrared laser to be at the same level as the rotary kiln cylinder, controls the infrared laser to emit laser, and the laser will be at the same level as the coaxiality of the rotary kiln cylinder, thereby conveniently observing the coaxiality height of the two rotary kiln cylinders, and accurately measuring the error distance of the two coaxialities, thereby improving the quality of the rotary kiln cylinder coaxiality measurement.

Description

Technical Field

[0001] The invention relates to the technical field of rotary kiln cylinders, in particular to a rotary kiln cylinder coaxiality measuring device. Background Art

[0002] The measurement of rotary kiln cylinder coaxiality is an important step in inspecting the installation of rotary kiln cylinder. The quality of coaxiality directly affects the use of rotary kiln. The greater the coaxiality deviation, the shorter the service life of rotary kiln. In the past, the coaxiality of rotary kiln was measured by hanging steel wire method, which is divided into center target method and cylinder hanging wire method. The first center target method is to make two targets on the outside of both ends of rotary kiln cylinder according to design requirements to draw the center line, divide the cylinder into four points, and use a drawing rule smaller than the radius of the cylinder to draw four arcs on the target plate in the middle of the cylinder support to intersect at 4 points, and then measure each section. The first method measures the coaxiality of the cylinder by measuring the distance from four points of the cylinder to the center steel wire; the second method is to pull steel wire at four equally divided points on the outside of the first and last sections of the cylinder, and measure the distance from each section of the cylinder to the steel wire respectively; the first method requires two points at both ends of the cylinder, which increases the measurement error, that is, the instability of the measurement, and is greatly affected by the weather; the second method is greatly affected by the cylinder material and weather, and has difficulty in measurement and large measurement errors; therefore, the current measurement method can no longer meet the current requirements for installation accuracy, and patent documents have been available to improve this.

[0003] Chinese patent CN104121870A discloses a method for measuring the coaxiality of a rotary kiln cylinder, comprising the following steps: before the rotary kiln cylinder is hoisted, four arcs are drawn with a drawing rule at four points on both ends of each cylinder as the center of the circle, and the length of the arc is less than the radius of the cylinder. The arcs intersect at the four points, and the intersection of the lines connecting the four points is the center of the cylinder. Then, the cylinder is hoisted; step 2, after the hoisting of the entire cylinder is completed, the measured points are set at the cross braces at both ends of each cylinder, and a circular hole is set at each end as the center of the cylinder; step 3, setting up the instrument; step 4, turning on the instrument to calibrate the instrument; step 5, reading the data: after adjusting the elevation angle of the theodolite, the circular holes on the cross braces at both ends of each cylinder are measured, the scale plates of the laser theodolite are placed on the circular holes respectively, the center cross line is aligned, and then the error between the center cross line and the laser point is measured, which is the error of the coaxiality of the cylinder. The present invention is convenient and accurate in measurement and is not affected by weather.

[0004] Although the above patent measures the coaxiality of the rotary kiln cylinder by means of a laser theodolite, the difference in the coaxiality of the rotary kiln cylinder is not measured during the measurement process. The coaxiality measurement of the rotary kiln cylinder is not accurate enough, and the specific adjustment value cannot be known when the rotary kiln cylinder is subsequently adjusted. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a rotary kiln cylinder coaxiality measuring device, which solves the problem that the coaxiality difference of the rotary kiln cylinder is not measured accurately, and the specific adjustment value cannot be known when the rotary kiln cylinder is subsequently adjusted.

[0006] To achieve the above purpose, the present invention is implemented through the following technical scheme: a rotary kiln cylinder coaxiality measuring device, comprising two measuring frames and a rotary kiln cylinder located on the two measuring frames, a limiting groove is provided at the rear of the measuring frame, a movable plate is slidably connected to the interior of the limiting groove through a slider, an infrared laser is fixedly installed on one side of the movable plate through an opening, a connecting plate is fixedly connected to the rear of the movable plate, a limiting mechanism is provided at the rear of the connecting plate, an electric telescopic rod is fixedly connected to the top of the measuring frame, a supporting plate matched with the connecting plate is fixedly connected to the telescopic end of the electric telescopic rod, a base is provided between the two measuring frames, a measuring plate is fixedly connected to the top of the base, and scale values ​​are provided on both sides of the measuring plate.

[0007] Preferably, the limit mechanism includes a limit frame, which is fixedly connected to the rear part of the connecting plate, the top of the limit frame is fixedly connected to the mounting frame, the bottom of the mounting frame is fixedly connected to the motor, the output shaft of the motor is fixedly connected to a threaded rod through a coupling, one end of the threaded rod passes through the limit frame and is rotatably connected to the bottom of the inner cavity of the limit frame through a bearing, the upper and lower parts of the surface of the threaded rod and located inside the limit frame are threadedly connected to the limit plate, and a slide groove is provided at the front part of the inner cavity of the limit frame, and the interior of the slide groove is slidably connected to the front of the limit plate through a slider.

[0008] Preferably, the front and rear parts of the opposite sides of the two limit plates are fixedly connected with inclined plates, the opposite sides of the upper and lower inclined plates are fixedly connected with support rods, and the surface of the threaded rod is fixedly connected with a retaining ring.

[0009] Preferably, an adjustment mechanism is provided between the measuring frame and the base, and the adjustment mechanism comprises a plurality of adjustment plates, one side of the adjustment plate is fixedly connected with a strip plate, and the other side of the adjustment plate is provided with a strip groove matched with the strip plate.

[0010] Preferably, a rectangular plate matching the strip groove is fixedly connected to the lower part of one side of the measuring frame, and rectangular grooves matching the strip groove are formed on both sides of the base.

[0011] Preferably, the top of the measuring frame and the top of the adjusting plate are both fixedly connected with a positioning rod, the surface of the positioning rod is slidably connected with the positioning plate, one end of the positioning rod is fixedly connected with a circular plate, and a spring is sleeved on the surface of the positioning rod and below the positioning plate.

[0012] Preferably, a locking rod is fixedly connected to one side of the bottom of the positioning plate, a locking hole matching the locking rod is opened on one side of the top of the adjustment plate and the top of the strip plate, and through holes matching the locking rod are opened on both sides of the top of the base.

[0013] Preferably, self-locking pulleys are fixedly installed around the bottom of the measuring frame.

[0014] Beneficial Effects

[0015] The present invention provides a rotary kiln shell coaxiality measuring device. Compared with the existing technology, it has the following beneficial effects:

[0016] (1) The present invention moves two measuring frames to the side of the measuring frames, controls the motor to drive the threaded rod to rotate, so that the threaded rod drives multiple support rods to contact the rotary kiln cylinder, and the limiting mechanism is limited on the rotary kiln cylinder as a whole, so that the center of the limiting frame and the center point of the rotary kiln cylinder are at the same level, so that the infrared laser and the rotary kiln cylinder are at the same level, and the infrared laser is controlled to emit laser, and the laser will be at the same level as the coaxiality of the rotary kiln cylinder. The two lasers will irradiate on both sides of the measuring plate, so that the coaxiality height of the two rotary kiln cylinders can be easily observed, and the error distance of the two coaxialities can be accurately measured, thereby improving the quality of the coaxiality measurement of the rotary kiln cylinder.

[0017] (2) The present invention controls the motor to drive the threaded rod to rotate, and the threaded rod drives the two limit plates to move toward the middle at the same time. The two limit plates drive multiple support rods to move toward the middle, so that the limit mechanism is limited on the rotary kiln cylinder as a whole, so that the midpoint of the limit frame and the center point of the rotary kiln cylinder are at the same level, which can well make the coaxiality level of the laser emitted by the infrared laser and the rotary kiln cylinder the same, and can well improve the accuracy of the coaxiality measurement of the rotary kiln cylinder.

[0018] (3) The present invention pulls the positioning plate on the measuring frame upward, moves the positioning plate out of the positioning hole, and then continues to add or reduce the adjustment plate between the measuring frame and the adjustment mechanism, so that the entirety of the adjustment mechanism can be adjusted. The distance between the two measuring frames can be adjusted according to the distance measured by the rotary kiln cylinder, which makes the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0020] Figure 2 It is a rear view of the measuring frame, the limiting groove and the limiting mechanism structure of the present invention;

[0021] Figure 3It is a rear view of the measuring frame, the limiting groove, the moving plate, the electric telescopic rod, the supporting plate and the limiting frame structure of the present invention;

[0022] Figure 4 It is a rear view of the measuring frame, the limiting groove, the connecting plate, the infrared laser and the rectangular plate structure of the present invention;

[0023] Figure 5 A schematic diagram of the measuring frame, base, through hole and adjustment structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the adjustment plate, strip plate and strip groove structure of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the positioning rod, the positioning plate, the circular plate, the spring, the positioning rod and the adjusting plate of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the base, rectangular groove and through hole of the present invention.

[0027] In the figure: 1. measuring frame; 2. rotary kiln cylinder; 3. limiting groove; 4. moving plate; 5. infrared laser; 6. electric telescopic rod; 7. supporting plate; 8. connecting plate; 9. limiting mechanism; 10. self-locking pulley; 11. base; 12. measuring plate; 13. scale value; 14. adjusting mechanism; 15. rectangular plate; 16. rectangular groove; 17. positioning rod; 18. positioning plate; 19. circular plate; 20. spring; 21. positioning rod; 22. positioning hole; 23. through hole; 91. limiting frame; 92. mounting frame; 93. motor; 94. threaded rod; 95. limiting plate; 96. tilting plate; 97. supporting rod; 98. retaining ring; 99. slide groove; 141. adjusting plate; 142. strip plate; 143. strip groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1-8The present invention provides a technical solution: a rotary kiln cylinder coaxiality measuring device, comprising two measuring frames 1 and a rotary kiln cylinder 2 located on the two measuring frames 1, a limiting groove 3 is provided at the rear of the measuring frame 1, a moving plate 4 is slidably connected to the inside of the limiting groove 3 through a slider, an infrared laser 5 is fixedly installed on one side of the moving plate 4 through an opening, the infrared laser 5 is electrically connected to an external power supply and is controlled by a control switch, a connecting plate 8 is fixedly connected to the rear of the moving plate 4, a limiting mechanism 9 is arranged at the rear of the connecting plate 8, an electric telescopic rod 6 is fixedly connected to the top of the measuring frame 1, the electric telescopic rod 6 is electrically connected to the external power supply and is controlled by a control switch, a supporting plate 7 matched with the connecting plate 8 is fixedly connected to the telescopic end of the electric telescopic rod 6, a base 11 is provided between the two measuring frames 1, a measuring plate 12 is fixedly connected to the top of the base 11, and scale values ​​13 are arranged on both sides of the measuring plate 12.

[0030] Further, in order to facilitate the infrared laser 5 and the center point of the rotary kiln cylinder 2 to be at the same level, the limiting mechanism 9 includes a limiting frame 91, the limiting frame 91 is fixedly connected to the rear of the connecting plate 8, the top of the limiting frame 91 is fixedly connected to a mounting frame 92, the bottom of the mounting frame 92 is fixedly connected to a motor 93, the motor 93 is a servo motor, electrically connected to an external power supply, and controlled by a control switch, the output shaft of the motor 93 is fixedly connected to a threaded rod 94 through a coupling, and one end of the threaded rod 94 passes through the limiting frame 91. The threaded rod 94 is rotatably connected to the bottom of the inner cavity of the limit frame 91 through a bearing, and the upper and lower parts of the surface of the threaded rod 94 and the interior of the limit frame 91 are threadedly connected to the limit plate 95. A slide groove 99 is provided at the front of the inner cavity of the limit frame 91, and the interior of the slide groove 99 is slidably connected to the front of the limit plate 95 through a slider. The front and rear parts of the opposite sides of the two limit plates 95 are fixedly connected to inclined plates 96, and the opposite sides of the upper and lower inclined plates 96 are fixedly connected to support rods 97, and the surface of the threaded rod 94 is fixedly connected to a retaining ring 98.

[0031] It should be noted that the threads on the surface of the threaded rod 94 located above and below the retaining ring 98 have opposite directions, driving the two limiting plates 95 to move relative to each other synchronously.

[0032] Furthermore, in order to facilitate the adjustment of the distance between the two measuring frames 1, an adjustment mechanism 14 is provided between the measuring frame 1 and the base 11, and the adjustment mechanism 14 includes a plurality of adjustment plates 141, one side of the adjustment plate 141 is fixedly connected to a strip plate 142, and the other side of the adjustment plate 141 is provided with a strip groove 143 adapted to the strip plate 142, and a rectangular plate 15 adapted to the strip groove 143 is fixedly connected to the lower side of one side of the measuring frame 1, and rectangular grooves 16 adapted to the strip plate 142 are provided on both sides of the base 11. A positioning rod 17 is fixedly connected to the top and the top of the adjustment plate 141, a positioning plate 18 is slidably connected to the surface of the positioning rod 17, a circular plate 19 is fixedly connected to one end of the positioning rod 17, a spring 20 is sleeved on the surface of the positioning rod 17 and located below the positioning plate 18, a locking rod 21 is fixedly connected to one side of the bottom of the positioning plate 18, a locking hole 22 matched with the locking rod 21 is provided on one side of the top of the adjustment plate 141 and the top of the strip plate 142, and through holes 23 matched with the locking rod 21 are provided on both sides of the top of the base 11.

[0033] Furthermore, in order to facilitate the movement of the measuring device, self-locking pulleys 10 are fixedly installed around the bottom of the measuring frame 1.

[0034] When in use, the length between the two measuring frames 1 is adjusted according to the length of the rotary kiln cylinder 2 to be measured, and the positioning plate 18 on the measuring frame 1 is pulled upward, and the positioning plate 18 will drive the positioning rod 21 to move upward, so that the positioning rod 21 moves out of the strip plate 142, and then the two measuring frames 1 are moved to both sides respectively, and multiple adjustment plates 141 are added to the measuring frame 1 for splicing, and the positioning rod 21 is inserted into the spliced ​​strip plate 142, so that the overall length of the adjustment mechanism 14 is increased, and the appropriate length between the two measuring frames 1 is increased;

[0035] Then, by pushing the two measuring frames 1 to move to the side of the rotary kiln cylinder 2, and then controlling the two electric telescopic rods 6 to extend, the electric telescopic rods 6 will push the connecting plate 8 upward through the supporting plate 7, and the connecting plate 8 will drive the limit frame 91 to move upward, so that the two limit plates 95 on the limit frame 91 are located above and below the rotary kiln cylinder 2, and then continue to push the two measuring frames 1, so that the two limit plates 95 on the limit frame 91 are respectively located above and below the rotary kiln cylinder 2, and the multiple self-locking pulleys 10 are locked to ensure the stability of the two measuring frames 1;

[0036] By controlling the two motors 93 to rotate, the motors 93 will drive the threaded rods 94 to rotate, and the threaded rods 94 will drive the two limit plates 95 to move synchronously toward the middle, so that the multiple support rods 97 on the two limit plates 95 are in contact with the rotary kiln cylinder 2, so that the limit frame 91 is clamped and limited on the rotary kiln cylinder 2 as a whole, and at the same time, the two electric telescopic rods 6 are controlled to shrink, driving the support plate 7 to move downward and no longer contact the connecting plate 8, so that the center between the two limit plates 95 coincides with the center point of the rotary kiln cylinder 2, so that the connecting plate 8 and the rotary kiln cylinder 2 are aligned. The center point of the kiln cylinder 2 is flush, and the infrared laser 5 on the moving plate 4 is flush with the center point of the rotary kiln cylinder 2. The laser is emitted by two infrared lasers 5, and the horizontality of the laser is the same as the coaxiality of the rotary kiln cylinder 2. The laser is projected on the measuring plate 12, and the heights of the two laser beams are observed for comparison. If the heights of the two laser beams are the same, the coaxiality of the two sides of the rotary kiln cylinder 2 is the same. If there is a height difference between the heights of the two laser beams, the coaxiality of the two sides of the rotary kiln cylinder 2 is different, and the rotary kiln cylinder 2 needs to be adjusted later;

[0037] After measuring the coaxiality of the rotary kiln cylinder 2, turn off the two infrared lasers 5 to stop emitting lasers, and then control the two electric telescopic rods 6 to extend, drive the support plate 7 to support the connecting plate 8 upward, and at the same time control the two motors 93 to drive the two threaded rods 94 to rotate in the opposite direction, so that the threaded rods 94 drive the two limit plates 95 to move up and down respectively, so that the multiple support rods 97 no longer contact the rotary kiln cylinder 2, and the limit mechanism 9 on the measuring frame 1 is moved out of the rotary kiln cylinder 2 by pulling the two measuring frames 1 backward.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln shell coaxiality measuring device, comprising two measuring frames (1) and a rotary kiln shell (2) located on the two measuring frames (1), characterized in that: A limiting groove (3) is provided at the rear of the measuring frame (1), a movable plate (4) is slidably connected to the interior of the limiting groove (3) via a slider, an infrared laser (5) is fixedly mounted on one side of the movable plate (4) via an opening, a connecting plate (8) is fixedly connected to the rear of the movable plate (4), a limiting mechanism (9) is provided at the rear of the connecting plate (8), an electric telescopic rod (6) is fixedly connected to the top of the measuring frame (1), a supporting plate (7) adapted to the connecting plate (8) is fixedly connected to the telescopic end of the electric telescopic rod (6), a base (11) is provided between the two measuring frames (1), a measuring plate (12) is fixedly connected to the top of the base (11), and scale values ​​(13) are provided on both sides of the measuring plate (12).

2. The rotary kiln shell coaxiality measuring device according to claim 1, characterized in that: The limiting mechanism (9) comprises a limiting frame (91), wherein the limiting frame (91) is fixedly connected to the rear part of the connecting plate (8), the top of the limiting frame (91) is fixedly connected to a mounting frame (92), the bottom of the mounting frame (92) is fixedly connected to a motor (93), the output shaft of the motor (93) is fixedly connected to a threaded rod (94) through a coupling, one end of the threaded rod (94) passes through the limiting frame (91) and is rotatably connected to the bottom of the inner cavity of the limiting frame (91) through a bearing, the upper and lower parts of the surface of the threaded rod (94) and located inside the limiting frame (91) are both threadedly connected to the limiting plate (95), the front part of the inner cavity of the limiting frame (91) is provided with a slide groove (99), and the inside of the slide groove (99) is slidably connected to the front part of the limiting plate (95) through a slider.

3. The rotary kiln shell coaxiality measuring device according to claim 2, characterized in that: The front and rear parts of the opposite sides of the two limit plates (95) are fixedly connected to an inclined plate (96), the opposite sides of the upper and lower inclined plates (96) are fixedly connected to a support rod (97), and the surface of the threaded rod (94) is fixedly connected to a retaining ring (98).

4. The rotary kiln shell coaxiality measuring device according to claim 1, characterized in that: An adjustment mechanism (14) is provided between the measuring frame (1) and the base (11), the adjustment mechanism (14) comprising a plurality of adjustment plates (141), one side of the adjustment plate (141) being fixedly connected to a strip plate (142), and the other side of the adjustment plate (141) being provided with a strip groove (143) adapted to the strip plate (142).

5. The rotary kiln shell coaxiality measuring device according to claim 4 is characterized in that: A rectangular plate (15) matching the strip groove (143) is fixedly connected to the lower side of one side of the measuring frame (1), and rectangular grooves (16) matching the strip grooves (142) are provided on both sides of the base (11).

6. The rotary kiln shell coaxiality measuring device according to claim 4, characterized in that: The top of the measuring frame (1) and the top of the adjusting plate (141) are both fixedly connected with a positioning rod (17), the surface of the positioning rod (17) is slidably connected with a positioning plate (18), one end of the positioning rod (17) is fixedly connected with a circular plate (19), and a spring (20) is sleeved on the surface of the positioning rod (17) and located below the positioning plate (18).

7. The rotary kiln shell coaxiality measuring device according to claim 6 is characterized in that: A locking rod (21) is fixedly connected to one side of the bottom of the positioning plate (18), a locking hole (22) matching the locking rod (21) is provided on one side of the top of the adjustment plate (141) and the top of the strip plate (142), and through holes (23) matching the locking rod (21) are provided on both sides of the top of the base (11).

8. The rotary kiln shell coaxiality measuring device according to claim 1, characterized in that: Self-locking pulleys (10) are fixedly installed around the bottom of the measuring frame (1).

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