CN103816983A - Installation construction method of large coal pulverizer - Google Patents
Installation construction method of large coal pulverizer Download PDFInfo
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- CN103816983A CN103816983A CN201410060815.9A CN201410060815A CN103816983A CN 103816983 A CN103816983 A CN 103816983A CN 201410060815 A CN201410060815 A CN 201410060815A CN 103816983 A CN103816983 A CN 103816983A
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Abstract
The invention discloses an installation construction method of a large coal pulverizer. The method comprises the following steps: 1, carrying out basic inspection and acceptance; 2, unpacking and inspecting an apparatus; 3, paying off a line; 4, installing an anchor bolt; 5, installing an apparatus pedestal; 6, installing a main bearing pedestal; 7, installing a main bearing; 8, installing a rotation portion; 9, installing a transmission portion; 10, installing a cylinder lining board and a feeding and discharging port lining board; 11, installing a gear cover and other accessories; and 12, carrying out test driving. The installation construction method allows an apparatus body and transmission mechanisms to be assembled on the ground, integral hoisting is carried out after the assembling of the apparatus body and the transmission mechanisms, and local adjustment is carried out to solve a series of problems of need of the arrangement of a full framing scaffolding on the apparatus, long use time of large tonnage cranes, low installation precision and the like are solved, and good economic and social benefits are realized.
Description
Technical field
The present invention relates to a kind of construction method of installation of large-scale coal pulverizer, be applicable to the installation of large-scale Coal Chemical Engineering Project coal pulverizer, belong to equipment mounting technique field.
Background technology
The successful commercialization of olefin hydrocarbon making by coal and the successful demonstration of coal liquefaction, make the product of New Coal Chemical really move towards market, and petroleum chemicals are competed on the same stage both at home and abroad, and will be to China's derived energy chemical raw material supply structure generation profound influence.The industrialization demonstration of olefin hydrocarbon making by coal and coal liquefaction completes, and coal synthetic natural gas processed and coal-ethylene glycol are also in actively pushing forward process.Under the trend of soaring oil prices and energy supply anxiety, the petroleum resources that New Coal Chemical is Science in Future in China supplements and partly substitutes and opened up new direction.
And the prerequisite of Coal Chemical Industry need to become lump coal water-coal-slurry, need large-scale coal pulverizer to complete, thereby large-scale coal pulverizer become most important link in Coal Chemical Industry, the stable operation of large-scale coal pulverizer is to guarantee the most important condition of producing.Large-scale coal pulverizer has the features such as volume is large, Heavy Weight, parts are large and many, installation accuracy is high, maintenance is difficult, thereby how to guarantee that the installation accuracy of large-scale coal pulverizer becomes the most important thing in Coal Chemical Industry construction.
Tradition coal pulverizer is because volume is large, weight is many, be loose mail arrival, being lifted in coal mill foundations and assembling piecemeal when installation, because of Equipment Foundations high, surrounding has the restriction of the spaces such as building enclosing and position to need large-scale crane to complete assembled, when installation, full hall scaffold must be set up in surrounding and bottom, and time-consuming, effort, cost is high and installation accuracy is not high.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, a kind of novel construction method of installation of large-scale coal pulverizer is provided, adopt ground to spell mounting equipment body and transmission mechanism, treat apparatus body and transmission mechanism all assemble after integral hoisting in place, local adjustment, has solved and in Equipment Foundations, has needed to set up full hall scaffold, large tonnage crane length service time, the not high series of problems of installation accuracy.
Technical scheme: the construction method of installation of a kind of large-scale coal pulverizer of the present invention, comprises the steps:
Step 1: inspection and the examination on basis, before equipment is installed, the data that will transfer according to civil engineering unit, carried out strict repetition measurement, inspected for acceptance in the basis that coal pulverizer equipment is installed, comprise whether the built-in fitting in spacing, the concrete of the levelness of appearance and size, base surface on requirement of strength, the basis of base concrete and center line, absolute altitude, foundation bolt hole meets the requirement of detail of design and installation figure and technical code for work and acceptance;
Step 2: the unpacking and inspection of equipment, equipment is unpacked and should under participating in, be carried out construction unit, supervisor, manufacturer, general contracting unit, the relevant personnel of unit in charge of construction, and the equipment of making is conutersigned record of acceptance, according to packing list, check the quantity of equipment and parts thereof, according to the physical dimension of apparatus body figure checkout facility and have or not degree of impairment, equipment and component and fitting thereof all should be kept properly, and avoid its distortion, damage, corrosion, entanglement and loss;
Step 3: unwrapping wire, Equipment Foundations acceptance(check) and removing surface is clean after, get final product unwrapping wire, when unwrapping wire, with center line and the absolute altitude of theodolite and spirit level sensing equipment, and be labeled on base center target and datum mark last center line and other datum line of using line of ink marker pop-up device on basis;
Step 4: the installation of foundation bolt, after equipment is marched into the arena, after the bolt hole on bearing block chassis is measured, carry out burying underground of foundation bolt according to its locating hole size;
Step 5: the installation of plant bottom case, plant bottom case is installed on foundation pier by foundation bolt, between plant bottom case and foundation pier, pad is with parallels, for adjusting levelness and the absolute altitude of plant bottom case, last, fastening foundation bolt;
Step 6: base bearing floor installation, base bearing base is installed on plant bottom case by the anchor bolt on plant bottom case, by the caging bolt on plant bottom case, to base bearing base, adjustment meets the requirements its levelness, absolute altitude and axis, qualified rear parallels is welded and fixed, and be in the milk under plant bottom case;
Step 7: the installation of base bearing: comprise the contact-making surface of clean base bearing and bearing block, base bearing is installed, the cooling water channel of cleaning main brasses, and the installation of main bearing lubrication system;
Step 8: the installation of rotating part, (1) lifting cylindrical shell, when coal pulverizer Barrel hoisting, select large-scale crane to lift cylindrical shell, sling installation site top of cylindrical shell, be placed on sleeper buttress upper, make the distance of its quill shaft higher than bearing shell mouth 50～100mm, with being placed on cylindrical shell below on set arc-shaped bracket, cylindrical shell jack-up slightly, reduce sleeper buttress with 4 jack, slowly fall jack, repeatedly adjust sleeper buttress, until quill shaft accurately drops on bearing shell; (2) be installed into, crusher discharge end cover;
Step 9: the installation of driving section, comprises the pinion drive portion of installing, air clutch is installed, motor is installed and inching gear is installed;
Step 10: the installation of shell liner and feed inlet and outlet liner plate, with the fixing liner plate connecting with cylindrical shell of bolt, in the time arranging, should interlock and carry out, avoid gap to concentrate on a line;
Step 11: gear cover and other attached installations, when mounting teeth wheel cover, must have enough gaps between case and large and small gear;
Step 12: test run, comprises zero load test running and load test run.
Further improve technique scheme, in described step 6, before base bearing floor installation, must hang center line, comprise following operation: first, with iron pipe or two center line bars of section steel manufacture, the height of center line frame is higher than the setting height(from bottom) of coal pulverizer cylindrical shell, and top is fixed with runner, two center line bars are separately fixed to foundation pier and the opposing side of another foundation pier; Then, according to basic upper shell longitudinal center line position, on two center line bars, hang up steel wire center line, one end of described steel wire is fixed, and the other end is hung weight after walking around the runner of center line masthead end, and steel wire is stretching; Finally, between two center line bars, the two ends of the steel wire center line of part difference hanging wire hangs down, and by steel wire centre line aligning, can be found accurately the installation site of base bearing base and cylindrical shell and be adjusted by steel wire center line.
Further, when in described step 5, pad is with parallels, the position that parallels is placed is near gusset correspondence position foundation bolt and on plant bottom case, adopt the method for directly placing parallels on foundation pier, before placement, foundation pier contact surface is answered chipping, then grinds, until be uniformly distributed with parallels contact point; When placement, first level up parallels, and then pad inclined sizing block.
Further, before being installed in described step 9, pinion drive portion needs gear wheel to carry out accurate correction, utilize amesdial on gear wheel outer round surface and end face, check respectively end face run-out and circular runout, wherein: circular runout deviate, on every meter of pitch diameter, be less than or equal to 0.25mm, end face run-out deviation, is less than or equal to 0.35mm on every meter of pitch diameter; Backlash after gear wheel and pinion assembling is 1.4～2.18mm, after correction, by fastening each attachment bolt.
Further, before being in the milk in described step 6, first between the anti-skidding muscle of base bearing base bottom projection and foundation pier groove, fill with epoxy resin, and then the cement mortar of pouring water, base bearing base portion is imbedded, carried out maintenance after mortar initial set, mortar reaches after complete intensity, be coated with waterglass twice at screed and foundation pier surface, prevent that greasy dirt from corroding.
The present invention compared with prior art, its beneficial effect is: construction method of installation of the present invention, (1) adopt ground to spell mounting equipment body and transmission mechanism, treat apparatus body and transmission mechanism all assemble after integral hoisting in place, local adjustment, has solved and in Equipment Foundations, has needed to set up full hall scaffold, large tonnage crane length service time, the not high series of problems of installation accuracy; (2) reduce construction cost, save human resources, guarantee construction safety, environment is not produced to any pollution, obtained good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of hanging center line in embodiment 1.
Fig. 2 is embodiment 1 middle cylinder body lifting schematic diagram.
In figure: 1, fixing point; 2, plumb bob; 3, steel wire center line; 4, runner; 5, weight; 6, cylindrical shell; 7, sleeper buttress; 8, jack; 9, arc-shaped bracket; 10, main bearing seat.
The specific embodiment
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1: a kind of construction method of installation of large-scale coal pulverizer, comprises the steps:
Step 1: inspection and the examination on basis, before equipment is installed, the data that will transfer according to civil engineering unit, carried out strict repetition measurement, inspected for acceptance in the basis that coal pulverizer equipment is installed, comprise whether the built-in fitting in spacing, the concrete of the levelness of appearance and size, base surface on requirement of strength, the basis of base concrete and center line, absolute altitude, foundation bolt hole meets the requirement of detail of design and installation figure and technical code for work and acceptance.
Step 2: the unpacking and inspection of equipment, equipment is unpacked and should under participating in, be carried out construction unit, supervisor, manufacturer, general contracting unit, the relevant personnel of unit in charge of construction, and the equipment of making is conutersigned record of acceptance, according to packing list, check the quantity of equipment and parts thereof, according to the physical dimension of apparatus body figure checkout facility and have or not degree of impairment, equipment and component and fitting thereof all should be kept properly, and avoid its distortion, damage, corrosion, entanglement and loss.
Step 3: unwrapping wire, Equipment Foundations acceptance(check) and removing surface is clean after, get final product unwrapping wire, when unwrapping wire, with center line and the absolute altitude of theodolite and spirit level sensing equipment, and be labeled on base center target and datum mark last center line and other datum line of using line of ink marker pop-up device on basis.
Step 4: the installation of foundation bolt, after equipment is marched into the arena, after the bolt hole on bearing block chassis is measured, carry out burying underground of foundation bolt according to its locating hole size; Foundation bolt should just can be in the milk after plant bottom case hoisted in position, centering, before grouting, should check that its perpendicularity is less than or equal to 10/1000, in anchor bolt box, reserved gap, lower end is more than or equal to 100mm, bolt is more than or equal to 15mm to hole wall distance around, treat that grouting material intensity reaches the more than 75% of label, just allow fastening nut, when fastening nut, the method that adopts gradation symmetrically to tighten, foot bolt and plant bottom case are stressed in this wise just can evenly, tighten rear foundation bolt exposed junction length and need reach 1/3～2/3 foundation bolt diameter.
Step 5: the installation of plant bottom case, plant bottom case is installed on foundation pier by foundation bolt, between plant bottom case and foundation pier, pad is with parallels, for adjusting levelness and the absolute altitude of plant bottom case, last, fastening foundation bolt;
Wherein: the area that pad is put each parallels group of parallels formation can calculate by following formula:
A≥C*104*（Q1+Q2）/R
A-parallels area in formula, unit: mm
2;
C-safety coefficient, can adopt 1.5～3;
Q1-the load on load in parallels group, unit: N;
The license tensile strength of Q2-foundation bolt, unit: N;
The compression strength of R-base concrete unit are, unit: MPa.
The position that parallels is placed is near gusset correspondence position foundation bolt and on plant bottom case, adopts on foundation pier the directly method of placement parallels, and before placement, foundation pier contact surface is answered chipping, then grinds, until be uniformly distributed with parallels contact point; When placement, first level up parallels, and then pad inclined sizing block.The degree of depth that parallels group stretches into plant bottom case should exceed foundation bolt; Laterally should try one's best closely foot bolt (apart from foundation bolt≤50～100mm) or plant bottom case gusset place, under base bearing; Longitudinally plain cushion iron extending equipment base 10～30mm, two laps of inclined sizing block account for total length more than 2/3, and protuberate basic unit 10～50mm is advisable, and each parallels group all should be compacted; Use from the side 0.05mm clearance gauge plug obstructed.
Step 6: base bearing floor installation, base bearing base is installed on plant bottom case by the anchor bolt on plant bottom case, by the caging bolt on plant bottom case, to base bearing base, adjustment meets the requirements its levelness, absolute altitude and axis, qualified rear parallels is welded and fixed, and be in the milk under plant bottom case;
Wherein: before base bearing floor installation, must hang center line, as Fig. 1, comprise following operation: first, with iron pipe or two center line bars of section steel manufacture, the height of center line frame is higher than the setting height(from bottom) of coal pulverizer cylindrical shell, and top is fixed with runner, two center line bars are separately fixed to foundation pier and the opposing side of another foundation pier; Then, according to basic upper shell longitudinal center line position, on two center line bars, hang up steel wire center line, one end of described steel wire is fixed, and the other end is hung weight after walking around the runner of center line masthead end, and steel wire is stretching; Finally, between two center line bars, the two ends of the steel wire center line of part difference hanging wire hangs down, and by steel wire centre line aligning, can be found accurately the installation site of base bearing base and cylindrical shell and be adjusted by steel wire center line.
Before grouting, first between the anti-skidding muscle of base bearing base bottom projection and foundation pier groove, fill with epoxy resin, and then the cement mortar of pouring water, base bearing base portion is imbedded, after mortar initial set, carry out maintenance, mortar reaches after complete intensity, is coated with waterglass twice at screed and foundation pier surface, prevents that greasy dirt from corroding.
Step 7: the installation of base bearing: comprise the contact-making surface of clean base bearing and bearing block, base bearing is installed, the cooling water channel of cleaning main brasses, and the installation of main bearing lubrication system;
Install before base bearing, need determine according to drawing the distance of two base bearing center lines, press the actual size construction after cylindrical shell and two ends assembling, distance franchise ± 1mm in construction, need to consider the thermal expansion amount (Δ L) of cylindrical shell, measure two ends base bearing centre-to-centre spacing with steel disk chi, this numerical value should equal coal pulverizer two ends quill shaft diameter of axle centre-to-centre spacing (L) and add upper shell thermal expansion amount (Δ L), i.e. L+ Δ L.
Step 8: the installation of rotating part, (1) lifting cylindrical shell, as Fig. 2, when coal pulverizer Barrel hoisting, select large-scale crane to lift cylindrical shell, sling installation site top of cylindrical shell, be placed on sleeper buttress, make the distance of its quill shaft higher than bearing shell mouth 50～100mm, with being placed on cylindrical shell below on set arc-shaped bracket, with 4 jack cylindrical shell jack-up slightly, reduce sleeper buttress, slowly fall jack, repeatedly adjust sleeper buttress, until quill shaft accurately drops on bearing shell; (2) be installed into, crusher discharge end cover;
Cylindrical shell install time need: (1) measure cylindrical shell center, with the steel wire center line hanging up properly be as the criterion messenger wire hang down, the vertical vertical line of line is overlapped with the central point of cylindrical shell, its error is less than or equal to 0.3～0.4 ㎜.(2) measure quill shaft absolute altitude, with spirit level and scale, measure two quill shaft absolute altitudes, require the two ends discrepancy in elevation to be less than or equal to 0.5 ㎜, and discharge end is lower than feed end.(3) with the clearance gauge measurement main bearing shell of large specification and the side clearance of quill shaft, survey 3 points in every side, its gap and clearance gauge are filled in the degree of depth and should be met the requirements.Side clearance computing formula is as follows: S=0.001D+0.10mm, in formula: S-main bearing shell and quill shaft side clearance, unit: mm, D-quill shaft diameter of axle diameter, unit: mm; (4) main bearing shell end play is measured, and measures the end play of the two ends quill shaft shaft shoulder to bearing shell by clearance gauge or Steel Ruler, should conform to quality requirements, and as undesirable, should adjust the center of discharge end main bearing seat; (5) check the situation that contacts of quill shaft and main bearing shell, the situation that contacts of checking by blueing check two ends quill shaft and main bearing shell, should meet the requirements, before the last time quill shaft being fallen into main bearing shell, quill shaft and main bearing shell surface to be wiped clean, should coat equably lubricating oil or molybdenum disulphide grease.(6) cooperation that main bearing shell should meet quill shaft requires: contact angle is preferably 70 °～90 °, in every 25 ㎜ × 25 ㎜ areas, is preferably 2～6 points, and the summation of the side clearance of both sides is preferably 1.5/1000～2/1000 of diameter of axle diameter.
Step 9: the installation of driving section, comprises the pinion drive portion of installing, air clutch is installed, motor is installed and inching gear is installed;
Before being installed in described step 9, pinion drive portion needs gear wheel to carry out accurate correction, utilize amesdial on gear wheel outer round surface and end face, check respectively end face run-out and circular runout, wherein: circular runout deviate, on every meter of pitch diameter, be less than or equal to 0.25mm, end face run-out deviation, is less than or equal to 0.35mm on every meter of pitch diameter; Backlash after gear wheel and pinion assembling is 1.4～2.18mm, after correction, by fastening each attachment bolt.
When air clutch is installed, center line horizontal departure is less than or equal to 0.03/300, the direction of deviation is consistent with pinion shaft direction, motor requires motor main shaft levelness deviation to be less than or equal to 0.05/300 while installation, the direction of deviation should be consistent with pinion shaft direction, after pinion drive portion, air clutch, motor etc. are installed, require the coaxiality deviation between them to be less than or equal to φ 0.3mm, inching gear requires the axial line levelness deviation of inching gear to be less than or equal to 0.03/300 while installation, and the direction of deviation is consistent with pinion shaft direction.
Step 10: the installation of shell liner and feed inlet and outlet liner plate, with the fixing liner plate connecting with cylindrical shell of bolt, in the time arranging, should interlock and carry out, avoid gap to concentrate on a line; Liner plate should tightly contact with cylindrical shell, tamps, fills up if any gap application cement mortar.
Step 11: gear cover and other attached installations, when (1) mounting teeth wheel cover, must have enough gaps between case and large and small gear; (2) oil return pipe, cover plate for sealing part should, in conjunction with tightly, be avoided leakage of oil; (3) adjust atomizer direction, make it to aim at the engagement position of large and small gear; (4) mounting teeth wheel set lubricating oil station, and make oil inlet pipe, oil return pipe and gear cover are connected; (5) charging and discharging mouth and dispenser are firmly fastened in axle journal and are put, all trip bolts should evenly be tightened, and mustn't have loosening phenomenon; (6) installation of feed portion, when installation, between dispenser and grinding mill barrel, axiality checks, its axiality is less than or equal to 1mm.
Step 12: test run, comprises zero load test running and load test run.
Load test run should reach following requirement:
1) vibration amplitude of base bearing is less than or equal to 0.3mm.
2) temperature of full load base bearing is less than or equal to 55 ℃, and rolling bearing temperature is less than or equal to 65 ℃.
3) lubricated and interlock should be sensitive.
4) lining board of grinder etc. is located attachment bolt, and the on-stream impact shock that is subject to may produce looseningly, and the phenomenon by the time that fractures, therefore should stop mill inspection in load test run entry into service after 24 hours.
5) position that respectively rubs has not allowed burn phenomenon.
6) whole grinding machine stable working, does not have vibration sharply.
7) good seal everywhere, must not leak, oil leakage phenomenon.
8) low-pressure electric controlled and air clutch of synchronous motor, DJL excitation unit, main bearing lubrication device, gear pair lubricating arrangement, PLC etc. should meet the pertinent regulations of operation instructions separately.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.
Claims (5)
1. a construction method of installation for large-scale coal pulverizer, is characterized in that, comprises the steps:
Step 1: inspection and the examination on basis, before equipment is installed, the data that will transfer according to civil engineering unit, carried out strict repetition measurement, inspected for acceptance in the basis that coal pulverizer equipment is installed, comprise whether the built-in fitting in spacing, the concrete of the levelness of appearance and size, base surface on requirement of strength, the basis of base concrete and center line, absolute altitude, foundation bolt hole meets the requirement of detail of design and installation figure and technical code for work and acceptance;
Step 2: the unpacking and inspection of equipment, equipment is unpacked and should under participating in, be carried out construction unit, supervisor, manufacturer, general contracting unit, the relevant personnel of unit in charge of construction, and the equipment of making is conutersigned record of acceptance, according to packing list, check the quantity of equipment and parts thereof, according to the physical dimension of apparatus body figure checkout facility and have or not degree of impairment, equipment and component and fitting thereof all should be kept properly, and avoid its distortion, damage, corrosion, entanglement and loss;
Step 3: unwrapping wire, Equipment Foundations acceptance(check) and removing surface is clean after, get final product unwrapping wire, when unwrapping wire, with center line and the absolute altitude of theodolite and spirit level sensing equipment, and be labeled on base center target and datum mark last center line and other datum line of using line of ink marker pop-up device on basis;
Step 4: the installation of foundation bolt, after equipment is marched into the arena, after the bolt hole on bearing block chassis is measured, carry out burying underground of foundation bolt according to its locating hole size;
Step 5: the installation of plant bottom case, plant bottom case is installed on foundation pier by foundation bolt, between plant bottom case and foundation pier, pad is with parallels, for adjusting levelness and the absolute altitude of plant bottom case, last, fastening foundation bolt;
Step 6: base bearing floor installation, base bearing base is installed on plant bottom case by the anchor bolt on plant bottom case, by the caging bolt on plant bottom case, to base bearing base, adjustment meets the requirements its levelness, absolute altitude and axis, qualified rear parallels is welded and fixed, and be in the milk under plant bottom case;
Step 7: the installation of base bearing: comprise the contact-making surface of clean base bearing and bearing block, base bearing is installed, the cooling water channel of cleaning main brasses, and the installation of main bearing lubrication system;
Step 8: the installation of rotating part, (1) lifting cylindrical shell, when coal pulverizer Barrel hoisting, select large-scale crane to lift cylindrical shell, sling installation site top of cylindrical shell, be placed on sleeper buttress upper, make the distance of its quill shaft higher than bearing shell mouth 50～100mm, with being placed on cylindrical shell below on set arc-shaped bracket, cylindrical shell jack-up slightly, reduce sleeper buttress with 4 jack, slowly fall jack, repeatedly adjust sleeper buttress, until quill shaft accurately drops on bearing shell; (2) be installed into, crusher discharge end cover;
Step 9: the installation of driving section, comprises the pinion drive portion of installing, air clutch is installed, motor is installed and inching gear is installed;
Step 10: the installation of shell liner and feed inlet and outlet liner plate, with the fixing liner plate connecting with cylindrical shell of bolt, in the time arranging, should interlock and carry out, avoid gap to concentrate on a line;
Step 11: gear cover and other attached installations, when mounting teeth wheel cover, must have enough gaps between case and large and small gear;
Step 12: test run, comprises zero load test running and load test run.
2. the construction method of installation of a kind of large-scale coal pulverizer according to claim 1, it is characterized in that, in described step 6, before base bearing floor installation, must hang center line, comprise following operation: first, with iron pipe or two center line bars of section steel manufacture, the height of center line frame is higher than the setting height(from bottom) of coal pulverizer cylindrical shell, and top is fixed with runner, and two center line bars are separately fixed to foundation pier and the opposing side of another foundation pier; Then, according to basic upper shell longitudinal center line position, on two center line bars, hang up steel wire center line, one end of described steel wire is fixed, and the other end is hung weight after walking around the runner of center line masthead end, and steel wire is stretching; Finally, between two center line bars, the two ends of the steel wire center line of part difference hanging wire hangs down, and by steel wire centre line aligning, can be found accurately the installation site of base bearing base and cylindrical shell and be adjusted by steel wire center line.
3. the construction method of installation of a kind of large-scale coal pulverizer according to claim 1, is characterized in that,
When in described step 5, pad is with parallels, the position that parallels is placed is near gusset correspondence position foundation bolt and on plant bottom case, adopt the method for directly placing parallels on foundation pier, before placement, foundation pier contact surface is answered chipping, then grind, until be uniformly distributed with parallels contact point; When placement, first level up parallels, and then pad inclined sizing block.
4. the construction method of installation of a kind of large-scale coal pulverizer according to claim 1, it is characterized in that, before being installed in described step 9, pinion drive portion needs gear wheel to carry out accurate correction, utilize amesdial on gear wheel outer round surface and end face, check respectively end face run-out and circular runout, wherein: circular runout deviate, is less than or equal to 0.25mm on every meter of pitch diameter, end face run-out deviation, is less than or equal to 0.35mm on every meter of pitch diameter; Backlash after gear wheel and pinion assembling is 1.4～2.18mm, after correction, by fastening each attachment bolt.
5. the construction method of installation of a kind of large-scale coal pulverizer according to claim 1, it is characterized in that, before being in the milk in described step 6, first between the anti-skidding muscle of base bearing base bottom projection and foundation pier groove, fill with epoxy resin, and then the cement mortar of pouring water, base bearing base portion is imbedded, after mortar initial set, carry out maintenance, mortar reaches after complete intensity, is coated with waterglass twice at screed and foundation pier surface, prevents that greasy dirt from corroding.
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