CN110640442B - Method for replacing star wheel toothed plate of sintering machine - Google Patents
Method for replacing star wheel toothed plate of sintering machine Download PDFInfo
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- CN110640442B CN110640442B CN201811077478.9A CN201811077478A CN110640442B CN 110640442 B CN110640442 B CN 110640442B CN 201811077478 A CN201811077478 A CN 201811077478A CN 110640442 B CN110640442 B CN 110640442B
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- toothed plate
- toothed
- hole
- star wheel
- plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
Abstract
The invention relates to a method for replacing a star wheel toothed plate of a sintering machine, which comprises the following process steps: preparation work: preparing a plurality of hollow drills; preparing a round pipe for adjusting the distance between the adjacent toothed plates; preparing 2 sets of magnetic drills enough for processing reamed holes; after the sintering machine stops operating, the trolley on the star wheel is taken out, so that the star wheel can rotate and is not blocked by the trolley; taking out the old toothed plate; installing a new star wheel toothed plate; adjusting the synchronization of the teeth of the left and right toothed plates; the tooth space and the left and right tooth synchronization degree are adjusted; sequentially adjusting and fixing all toothed plates; all the non-reamed hole bolts are fastened completely; machining and reaming holes by using a magnetic drill and a hollow drill bit; and (4) sequentially processing the reamed holes, and installing reamed bolts and nuts. The method has the characteristics of simplicity, rapidness, short required time, low labor intensity and the like, can meet the requirement of installation precision, and only needs 3 days for replacing all toothed plates at the fastest speed.
Description
Technical Field
The invention belongs to the technical field of sintering machines, and relates to a method for replacing a star wheel toothed plate of a sintering machine.
Background
Mineral powder is often handled by the sintering machine at metal smelting enterprise, and the sintering machine has head star gear and afterbody star gear, installs the star gear pinion rack on the star gear, and the star gear pinion rack receives high temperature and sintering machine locomotive card wheel to its wearing and tearing, approximately need to be changed every 3-5 years, generally does not demolish the star gear, and the star gear is not off-line, changes the pinion rack at the scene. The star wheel toothed plate is replaced by the star wheel toothed plate, and the technical requirements are as follows: 1. the tooth synchronization error of the toothed plates on the left side and the right side is not more than 1 mm; 2. the position error of the adjacent toothed plates is not more than 0.5 mm; 3. the bolt of the outer ring of the fixed toothed plate is a reamed bolt, the bolt hole is a reamed hole, and the reamed hole is 0-0.05mm larger than the reamed bolt.
A method for replacing the toothed plate is not found through patent inquiry and thesis retrieval. By examining peripheral enterprises and consulting sintering machine design units, the common method for replacing the toothed plate is as follows: when the tooth plate spare part is manufactured, a non-hinged hole is processed, and a hole with the diameter 1-2mm smaller than that of the hinged hole is processed at the hinged hole in advance; the contraposition of the toothed plates is to measure the distance between the profiles of the left and right toothed plates and the hinging holes left on the left and right circular plates to position the left and right toothed plates by using the hinging holes left on the original left and right circular plates after the old toothed plates are removed as reference holes; after the non-reamed hole bolt is fastened, the reserved hole on the toothed plate is enlarged to the size of the reamed hole by using a drill bit and a reamer.
This solution has the disadvantages that: 1. the left toothed plate and the right toothed plate are required to be installed synchronously, but the left and right hinged holes are not required to be synchronized, so that the original left round plate and the right round plate can have larger errors; 2. when the tooth plate spare part is manufactured, the concentricity of a hole which is reserved at a reaming hole and is 1-2mm smaller than the diameter of the reaming hole and the reaming holes left on the left circular plate and the right circular plate has deviation, the reaming hole is processed by applying the magnetic drill, the drill bit or the reamer inclines due to different cutting amounts in the circumferential direction of the drill bit or the reamer in the reaming or reaming process, if the feed amount is large, the base of the magnetic drill is loosened and displaced, and after the base of the magnetic drill is loosened and displaced, the magnetic drill needs to be aligned and positioned again, so that longer time is needed. In order to avoid the looseness and displacement of a magnetic drill base, the feed amount of a drill bit or a reamer is reduced, the attraction of the magnetic drill base is small, the feed amount of the drill bit or the reamer needs to be very small, one reamed hole needs 6-8 hours, the reamed hole after machining is easy to be oval, 2 sets of magnetic drills are needed for machining for 8-10 days after the machining of 60 reamed holes of a whole set of toothed plates is completed, the labor intensity is high, and the synchronization degree of a left toothed plate and a right toothed plate and the precision of the reamed holes are difficult to control.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for replacing a star wheel toothed plate of a sintering machine, which has the characteristics of simplicity, quickness, short required time, low labor intensity and the like, can ensure the requirement of installation precision, and only needs 3 days for replacing all toothed plates at the fastest speed.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for replacing a star wheel toothed plate of a sintering machine comprises the following process steps:
1. preparation work: no hole is reserved at the hinged hole on the toothed plate; preparing a plurality of hollow drills with the diameter being 0.05mm smaller than the diameter of the reaming holes and the diameter of the reaming bolts; preparing a round pipe for adjusting the distance between the adjacent toothed plates, wherein the diameter of the round pipe is 0.05mm smaller than that of a designed tooth root circle; preparing 2 sets of magnetic drills enough for processing reamed holes;
2. and after the sintering machine stops operating, the trolley on the star wheel is taken out, so that the star wheel can rotate and is not blocked by the trolley. The trolley which is not taken out is arranged near the fixed star wheel, so that safety accidents caused by movement of the trolley are avoided;
3. removing bolts for fixing the toothed plates and taking out the old toothed plates;
4. installing a new star wheel toothed plate, and fixing the toothed plate by using a non-hinged bolt of an inner ring;
5. adjusting the synchronization of the teeth of the left toothed plate and the right toothed plate, drawing the center lines of the teeth of the left toothed plate and the right toothed plate which are positioned right above the shaft by using a drawing pin, using a thin line as a heavy hammer line, adjusting the center line of the highest tooth of the left toothed plate and the right toothed plate to be superposed with the heavy hammer line, fastening a non-hinged hole bolt for fixing the toothed plates, and fixing the adjusted synchronized left toothed plate and the right toothed plate;
6. and adjusting the distance between the adjacent toothed plates by using a circular tube, correcting the tooth synchronism of the left toothed plate and the right toothed plate by using the same method as the previous step, and fastening the non-hinged hole bolts of the fixed toothed plates after adjusting the tooth distance and the tooth synchronism of the left toothed plate and the right toothed plate to fix the left toothed plate and the right toothed plate which are adjusted to be synchronous. Sequentially adjusting and fixing all toothed plates;
7. all the non-reamed hole bolts are fastened completely;
8. and (4) machining and reaming holes by using a magnetic drill and a hollow drill. The hollow drill bit is used as a positioning hole of the hollow drill through an old reaming hole left on the circular plate, the feeding amount is small when the reaming hole on the tooth plate is drilled, the feeding amount of the drill bit is small, the magnetic drill is favorably stabilized, the precision of a machining hole is improved, and cutting fluid is added while drilling. Installing a hinged bolt and fastening a nut every time a hinged hole is drilled;
9. and (4) sequentially processing the reamed holes, and installing reamed bolts and nuts.
The invention has the positive effects that: the method has the characteristics of simplicity, rapidness, short required time, low labor intensity and the like, can meet the requirement of installation precision, and only needs 3 days for replacing all toothed plates at the fastest speed.
Detailed Description
The present invention will be further described with reference to the following examples.
A method for replacing a star wheel toothed plate of a sintering machine comprises the following process steps:
1. preparation work: no hole is reserved at the hinged hole on the toothed plate; preparing a plurality of hollow drills with the diameter being 0.05mm smaller than the diameter of the reaming holes and the diameter of the reaming bolts; preparing a round pipe for adjusting the distance between the adjacent toothed plates, wherein the diameter of the round pipe is 0.05mm smaller than that of a designed tooth root circle; preparing 2 sets of magnetic drills enough for processing reamed holes;
2. and after the sintering machine stops operating, the trolley on the star wheel is taken out, so that the star wheel can rotate and is not blocked by the trolley. The trolley which is not taken out is arranged near the fixed star wheel, so that safety accidents caused by movement of the trolley are avoided;
3. removing bolts for fixing the toothed plates and taking out the old toothed plates;
4. installing a new star wheel toothed plate, and fixing the toothed plate by using a non-hinged bolt of an inner ring;
5. the synchronization of the teeth of the left and right toothed plates is adjusted. The central lines of the teeth of the left toothed plate and the right toothed plate which are positioned right above the shaft are drawn by a scriber, a thin line is used as a weight line, and the central line of the highest tooth of the left toothed plate and the right toothed plate is adjusted to be coincident with the weight line. A non-hinged hole bolt for fastening the fixed toothed plate to fix the adjusted and synchronized left and right toothed plates;
6. and adjusting the distance between the adjacent toothed plates by using a circular tube, correcting the tooth synchronism of the left toothed plate and the right toothed plate by using the same method as the previous step, and fastening the non-hinged hole bolts of the fixed toothed plates after adjusting the tooth distance and the tooth synchronism of the left toothed plate and the right toothed plate to fix the left toothed plate and the right toothed plate which are adjusted to be synchronous. Sequentially adjusting and fixing all toothed plates;
7. all the non-reamed hole bolts are fastened completely;
8. and (4) machining and reaming holes by using a magnetic drill and a hollow drill. The hollow drill bit leaves an old reamed hole on the circular plate to serve as a positioning hole of the hollow drill, when the reaming on the tooth plate is drilled, the feeding amount needs to be small, the small feeding amount of the drill bit is beneficial to stabilizing the magnetic drill and improving the precision of a machined hole, and cutting fluid is added while drilling. Installing a hinged bolt and fastening a nut every time a hinged hole is drilled;
9. and (4) sequentially processing the reamed holes, and installing reamed bolts and nuts.
Example 1
The tail star wheel toothed plate of a sintering machine with the square length of 360 meters is replaced as an example:
1. preparation work: a toothed plate manufacturer is required to reserve no hole at the reaming holes of the left toothed plate and the right toothed plate, and a fine line is used for marking the reference circle of the toothed plate; preparing 8 hollow drills with the diameter being smaller than the diameter of the reamed hole and the diameter of the reamed bolt by 44mm and the diameter being 0-0.05 mm; preparing a round pipe for adjusting the distance between the adjacent toothed plates, wherein the diameter of the round pipe is 0-0.05mm smaller than that of the designed root circle; 4 sets of magnetic drills capable of machining a diameter of 44mm were prepared.
2. After the sintering machine stops operating, the trolley on the star wheel is taken out, and the star wheel can rotate and is not obstructed by the trolley. The trolley which is not taken out is arranged near the fixed star wheel, so that safety accidents caused by movement of the trolley are avoided.
3. And (4) removing the hinged bolts and nuts and the non-hinged bolts and nuts for fixing the left toothed plate and the right toothed plate, and taking out the old left toothed plate and the old right toothed plate.
4. And installing new left toothed plate and right toothed plate, and fixing the left toothed plate and the right toothed plate by using non-hinged bolts and nuts of the inner ring.
5. And adjusting the synchronization of the teeth of the left toothed plate and the right toothed plate. Firstly, the central lines of the teeth which are respectively positioned right above the shaft on the left toothed plate and the right toothed plate are drawn by using a scriber. The scribing step is as follows: drawing an arc by taking the A as the center of a circle and taking 50mm as the radius, and forming an intersection point C of the arc and a reference circle of the teeth; drawing an arc by taking the B as the center of a circle and taking 50mm as the radius, and forming an intersection point D of the arc and a reference circle of the teeth; and (3) proofing and punching at points C and D, drawing circular arcs by taking the points C and D as the circle centers and taking the linear distance of about 70 percent of the points C and D as the radius, wherein the intersection point of the two circular arcs is E and F, and a straight line EF drawn by the points E and F is a straight line of the tooth. And a thin line is used as a weight line, and the central lines of the highest teeth of the left toothed plate and the right toothed plate are adjusted to be coincident with the weight line. And a non-hinged hole bolt for fastening the toothed plates fixes the left toothed plate and the right toothed plate which are adjusted to be synchronous.
6. And adjusting the distance between the adjacent toothed plates by using a circular tube, correcting the synchronization degree of the teeth of the left toothed plate and the right toothed plate by using the same method as the previous step, and fastening the non-hinged hole bolts of the fixed toothed plates after adjusting the tooth distance and the synchronization degree of the left toothed plate and the right toothed plate to fix the adjusted toothed plates. And all the toothed plates are adjusted and fixed in sequence.
7. All the non-reamed hole bolts are fastened completely.
8. And (4) machining and reaming holes by using a magnetic drill and a hollow drill. The hollow drill bit utilizes old reamed holes left on the left circular plate and the right circular plate to serve as positioning holes of the hollow drill, when the drill bit drills on the tooth plate, the feeding amount needs to be small, the feeding amount of the drill bit is small, the magnetic drill is stabilized, the precision of machining holes is improved, cutting fluid is added while the drill bit drills, and the drill bit retreats about 2mm every time the drill bit discharges scrap iron. Drilling a reamed hole takes about 20 minutes. And each time one reaming hole is drilled, one reaming bolt is immediately installed, and the nut is fastened. The 2 sets of magnetic drills simultaneously process the left toothed plate and the right toothed plate.
9. And sequentially machining a hinged hole, and installing and fastening a hinged bolt and a hinged nut.
Claims (1)
1. A method for replacing a star wheel toothed plate of a sintering machine is characterized by comprising the following process steps:
(1) preparation work: no hole is reserved at the hinged hole on the toothed plate; preparing a plurality of hollow drills with the diameter being 0.05mm smaller than the diameter of the reaming holes and the diameter of the reaming bolts; preparing a round pipe for adjusting the distance between the adjacent toothed plates, wherein the diameter of the round pipe is 0.05mm smaller than that of a designed tooth root circle; preparing 2 sets of magnetic drills for machining and reaming holes;
(2) after the sintering machine stops operating, the trolley on the star wheel is taken out, so that the star wheel can rotate and is not blocked by the trolley; the trolley which is not taken out is arranged near the fixed star wheel, so that safety accidents caused by movement of the trolley are avoided;
(3) removing bolts for fixing the toothed plates and taking out the old toothed plates;
(4) installing a new star wheel toothed plate, and fixing the toothed plate by using a non-hinged bolt of an inner ring;
(5) adjusting the synchronization of the teeth of the left toothed plate and the right toothed plate, drawing the center lines of the teeth of the left toothed plate and the right toothed plate which are positioned right above the shaft by using a drawing pin, using a thin line as a heavy hammer line, adjusting the center line of the highest tooth of the left toothed plate and the right toothed plate to be superposed with the heavy hammer line, fastening a non-hinged hole bolt for fixing the toothed plates, and fixing the adjusted synchronized left toothed plate and the right toothed plate;
(6) adjusting the distance between adjacent toothed plates by using a circular tube, correcting the tooth synchronization degree of the left toothed plate and the right toothed plate by using the same method as the previous step, and fastening a non-hinged hole bolt for fixing the toothed plates after adjusting the tooth distance and the tooth synchronization degree of the left toothed plate and the right toothed plate to fix the adjusted and synchronized left toothed plate and right toothed plate; sequentially adjusting and fixing all toothed plates;
(7) all the non-reamed hole bolts are fastened completely;
(8) machining and reaming holes by using a magnetic drill and a hollow drill bit; the hollow drill bit is used as a positioning hole of the hollow drill through an old reaming hole left on the circular plate, the feeding amount is small when the reaming hole on the tooth plate is drilled, the feeding amount of the drill bit is small, the magnetic drill is favorably stabilized, the precision of a machining hole is improved, and cutting fluid is added while drilling; installing a hinged bolt and fastening a nut every time a hinged hole is drilled;
(9) and (4) sequentially processing the reamed holes, and installing reamed bolts and nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811077478.9A CN110640442B (en) | 2018-09-15 | 2018-09-15 | Method for replacing star wheel toothed plate of sintering machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811077478.9A CN110640442B (en) | 2018-09-15 | 2018-09-15 | Method for replacing star wheel toothed plate of sintering machine |
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| CN110640442A CN110640442A (en) | 2020-01-03 |
| CN110640442B true CN110640442B (en) | 2021-08-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325358Y (en) * | 1998-04-09 | 1999-06-23 | 唐小丽 | Sintering machine bogie changing apparatus |
| DE10315665A1 (en) * | 2003-04-04 | 2004-10-14 | Polymer-Chemie Gmbh | Gear wheel and method for its production |
| CN205587710U (en) * | 2016-03-17 | 2016-09-21 | 武钢集团昆明钢铁股份有限公司 | Positioning and punching device when pinion rack is changed to sintering machine star gear |
| CN107755968A (en) * | 2016-08-17 | 2018-03-06 | 彭建明 | Cylinder bearing of conveyor idler replacing options based on sintering machine |
| CN106493504A (en) * | 2017-01-04 | 2017-03-15 | 山东钢铁股份有限公司 | The online restorative procedure of the star wheel toothed plate of sintering machine |
| CN108406150B (en) * | 2018-02-27 | 2021-01-26 | 首钢京唐钢铁联合有限责任公司 | Sample plate combination for online surfacing of star-wheel toothed plate and online surfacing method |
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