CN107790954A - A kind of online quick maintenance method of large-sized grinder crawler shoe band and special tooling - Google Patents
A kind of online quick maintenance method of large-sized grinder crawler shoe band and special tooling Download PDFInfo
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- CN107790954A CN107790954A CN201710988305.1A CN201710988305A CN107790954A CN 107790954 A CN107790954 A CN 107790954A CN 201710988305 A CN201710988305 A CN 201710988305A CN 107790954 A CN107790954 A CN 107790954A
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- crawler shoe
- shoe band
- fixed plate
- frock
- bistrique
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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
- B23P6/00—Restoring or reconditioning objects
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A kind of online quick maintenance method of large-sized grinder crawler shoe band and special tooling, belong to large-size ball mill maintenance technique field.It is characterized in that：Comprise the following steps：1）, the double crawler shoe bands of measurement circular runout value and linearity；2）, determine stress point and special tooling installation site；3）, record crack distribution situation；4）, measurement bistrique with grind tail crawler shoe band absolute altitude；5）, determine the use of the region that large-sized grinder crawler shoe is reinforced with special tooling；6）, make frock；7）, quick repair cleaning；8）, dye penetrant inspection；9）Beat stop hole；10）, deflection maximum is adjusted；11）, frock prepackage；12）, surface clean；13）, test run confirm its effect.The present invention measures all construction datas in advance, frock clamp is made according to construction data, project progress is adjustable controllable with construction quality, and heat is not produced in work progress, secondary injury will not be caused to equipment, be finally reached equipment safety, the continuous, purpose of stable operation.
Description
Technical field
A kind of online quick maintenance method of large-sized grinder crawler shoe band and special tooling, belong to large-size ball mill maintenance technique neck
Domain.
Background technology
With cement production enterprise maximizes, high yield, modernization industrial development, the host device of cement production enterprise is also gradually big
Type, complicated while yield is huge, price is high, fabrication cycle length, failure on-line maintenance time length, maintenance mans
Sequence is complicated, and is difficult to the level for reaching new machine.At present, the mill speed of 1,000,000 tons of cement grinding production lines is 15.6r/min,
After grinding machine service life was more than 10 years, the bistrique shrouding of grinding machine starts to frequently occur the situation of shrouding cracking, tests prove that,
Passing through 3 times after wire bonding and then soldering, and lathe reconditioning crawler shoe tape handling is used at scene, after a period of time,
During normal service, find that shrouding ftractures again again, ftracture about 5 meters or so of length.During cracking operating, mill
Head slipper shoes temperature is higher always, great potential safety hazard be present.
Wherein, the structure type of the crawler shoe of grinding machine substantially has following three kinds：1st, traditional docking structure, the welding of this structure lack
Point is that, using manual work, time length, workmen's labor intensity is big, and the technical merit between welding personnel is uneven, i.e.,
It is same people to make, and larger fluctuation also occurs in the uniformity of welding quality within the different working times；Above all this
Release of the kind welding method to sheet metal stress shows as the bulging deformation of web, but for the release compared with steel plate welding stress
Make its deformation comparison difficult, it is cracked to be eventually exhibited as the drawing crack of outer shroud part, weld seam after having welded, and can not guarantee whole weld seam matter
The uniform stabilization of amount, does not reach design requirement.
2nd, cone docking structure, steel plateelement taper are difficult to roll greatly, and the domestic casting of steel-casting does not reach design requirement at present.
3rd, two-sided welding structure, because weld seam is on slip ring periphery, even if after welding weld hardness and mother metal hardness through
Annealing heat-treats are crossed, larger gap also still be present, this safe operation to sliding shoe bearing bush can form very big threat.
In view of the design and manufacturing process of right disintegrator, exclusive method is employed when analyzing the cause of accident, it is main former
Because as follows：1st, feed end end cap severe crack, discharge end do not occur temporarily then.Served as a contrast because grinding machine is anterior using ladder
Plate, the specification of abrasive body is big, and rear portion is small using the specification of classifying lining board and abrasive body, and the anterior abrasive body impulsive force than rear portion will
It is much bigger.The knot of fore rule, mainly abrasive body impact force action all occurs for this fracture for meeting many grinding mill barrels
Fruit.
2nd, analyzed from the stress of grinder shell cover, grinder shell cover stress is considerably complicated, and end cap has contacted with cylinder
It is used as a system to analyze, substantially there are three power：One power is due to abrasive body, material and mill body rotating part gravity
Caused moment M；Second power is due to shearing Q caused by above-mentioned gravity；3rd power is due to that abrasive body leaves
Caused impulsive force P during motion.Because always vertical is downward for gravity, end cap is acted on by alternate stress.Binding cylinder
Understood with the stress of end cap and deformation, it is maximum rather than minimum in the junction stress of end cap and cylinder, it is seen then that the brisement of end cap
Property belongs to fatigue rupture.
3rd, the fracture cause of any parts, all it is insufficient strength in one word from the structural analysis of grinder shell cover.
4th, form of construction work and traditional mode are completely different.This scheme be On-line construction, it is quick repair, can interrupted construction, enter
Spend adjustable controllable.
There is the traditional arrangement and method for construction of this problem for two kinds：One is that grinding machine changes cylinder, and that time consuming will take material,
The most the most important thing is cylinder fabrication cycle is 100 working days, process-cycle length, complex manufacturing process, crudy is such as ensured
If have to wait after barrel soldering it is weathering can, and cold crack, fire check occurs in welding process, connects
Head plastic deformation etc. can not occur situations such as meeting property.
Secondly carrying out welding grinding mill barrel cracking position to be online, as break mouth to cracking position and re-start welding.
Deflection is being difficult to control in welding process in the drawbacks of wire bonding maximum, the deformation of crawler shoe band is being easily caused, as causes to slide
Crawler belt radial deformation is uncontrollable big with linearity deflection.This scheme is although objective can be ensured to become in welding process in theory
Shape amount ultimately causes the deformation of crawler shoe band seriously in control range after constructing, cause slipper shoes to damage, be forced to stop
Machine.
In view of the above-mentioned problems, at present large-size ball mill need badly it is a kind of it is finished after to be completely secured cylinder indeformable, simultaneously
The deflection of crawler shoe band is adjusted in work progress and linearity reaches equipment operation requirement, while will not to crawler shoe band and slipper shoes
Any damage is caused, and has reached the online recovery technique of the purpose of continuous, the safe and stable operation of grinding machine.
The content of the invention
The technical problems to be solved by the invention are：Overcome the deficiencies in the prior art, there is provided a kind of grinding machine is continuous, safety,
Stable operation, it is online quick to repair, can interrupted construction, progress the is adjustable controllable online quick maintenance method of large-sized grinder crawler shoe band
And special tooling.
The technical solution adopted for the present invention to solve the technical problems is：A kind of online rapid-maintenance of large-sized grinder crawler shoe band
Method, it is characterised in that：Comprise the following steps：
1）The circular runout value and linearity of double crawler shoe bands are measured first, measure data；
2）Measure and draw the particular location and length of grinding machine grinding head shrouding cracking, analyzed according to data, determine stress point
With rapid-maintenance special tooling installation site；
3）Grinding machine grinding head the shrouding length of fragmented parts, the outer arc length of crawler shoe band and cylinder radian everywhere are measured, and records and splits
Line distribution situation；
4）Measure bistrique crawler shoe band and grind the absolute altitude of tail crawler shoe band, determine absolute altitude of the absolute altitude of bistrique crawler shoe band than grinding tail crawler shoe band
More than or equal to 1mm；
5）Judge bistrique crawler shoe band circular runout value whether ﹤ 0.5mm, determine crawler shoe band deflection maximum point；
The slipper shoes circular runout value standard of grinding machine is≤0.5mm, linearity 0.02mm/m.The numerical value of physical device is exceeded non-
Chang Yanchong, circular runout value >=1.2mm, linearity 0.3mm/m, it can so cause slipper shoes Wa Wengao or even damage crawler shoe
Watt, if do not eliminated thoroughly, consequence is very serious.Have to find out the main of radial missing during online quick reparation crawler shoe
Where reason, eventually the reason for this is that bistrique shrouding is after secondary cracking, its present position support force diminishes, and causes shrouding to deform, from
And cause crawler shoe band local deformation, uneven, linearity deviation is excessive.Comprehensive analysis reason, only find the root of problem
Could preferably solve this problem, be adjusted in work progress, meet equipment safety stable operation.Main Adjusted Option
For：It is worth too small place special frock jack top crawler shoe band in circular runout, adjusts data slowly, reach the margin of tolerance
It is interior；
6）Frock is made, frock uses two-sided welding；
Frock must be heated in welding process, be incubated after welding in holding furnace, then natural
Cooled under environment；From thickness 30mm steel plate, material is consistent with quality of parent material to be：Q235B, according to baffle dimensions, cylinder
Body radian makes 10 sets of special reinforcement frocks, and often covering frock must supporting 2-3 bars reinforcement.Two-sided welding must be carried out, is made
Special reinforcement frock radian it is consistent with the radian of ball mill cracks mating surface, carried out if necessary using in situ conditioning mode
Solve；
7）The head and the tail position of shrouding cracking is determined, grinding mill barrel is then cleared up and is stayed with the dust above bistrique shrouding, paint and weldering
Residue；
8）Dye penetrant inspection, end crack location is determined, the position of bistrique shrouding cracking is coloured before stop hole is beaten, finally
Determine the most end end position of crackle；
This point of dye penetrant inspection is extremely important, can ensure quality after specific position is only determined；Beat stop hole purpose be
In order to prevent crack extension, spread, this step is most important；
9）Stop hole is beaten, least significant end beats stop hole at the two of shrouding with drill bit；
10）The double crawler shoe deflection maximums of grinding machine are adjusted, adjust to the distortion inaccuracy of crawler shoe band 0.5-0.7mm it
Between；
11）Frock is pre-installed, and the frock processed is filled to cylinder cracking position in advance, is fixed with high-strength bolt by frock is reinforced；
12）Surface clean, mating surface is cleaned with cleaning agent before mounting tool, remove all impurity, then frock applies with cylinder
Smear metal binding agent to be bonded, and fasten plantation bolt installation and strengthen frock；
13）First two pieces of reinforcement frocks of installation, then carry out test run, confirm that situation without exception occurs, recycle repeatedly parking empty
Gear, more special reinforcement frocks of set are installed.
Step 4）Described bistrique is highest of the bistrique crawler shoe with peak with mill tail crawler shoe band with absolute altitude with mill tail crawler shoe
Point is in the range of 0-1mm.
Step 6）Described heating-up temperature is 200 degree, and soaking time is 2 hours.
Step 8）Described dye penetrant inspection is made to be detected after the completion of all fillet weld seams using 100% dye penetrant inspection
The radian for the special reinforcement frock made is consistent with the radian of ball mill cracks mating surface, according to its weldering of actual radian in situ conditioning
Connect compactness.Pay special attention to：During frock is reinforced in installation, the fit dimension of mating surface, particularly corner are tackled, is entered
Row is levelling by hand, and it is tight to reach cooperation.
There is no thermal source in work progress, therefore heat will not be produced, after construction, it is not necessary at online weld cracking,
The substantial amounts of turnover job such as grinding mill barrel need not be changed, traditional equipment rebuilding requirement is fully achieved.Equipment is using one section
Also situations such as secondary deformation will not occur after time or ftracture again again.
The online rapid-maintenance of large-sized grinder crawler shoe band used in the above-mentioned online quick maintenance method of large-sized grinder crawler shoe band
Special tooling, it is characterised in that：Including fixed plate one and fixed plate two, reinforcement is provided between fixed plate one and fixed plate two
Plate, fixed plate one and fixed plate two are provided with screw.
Described fixed plate one is fixedly connected with a side of fixed plate two.
Described fixed plate one and fixed plate two are the steel plate being wholely set after bending.
Described fixed plate one and fixed plate two are arc, and bending radian is consistent with ball mill barrel radian.
Metal adhesive is coated with described fixed plate one and fixed plate two.
The form of construction work and traditional mode of the present invention is completely different, and this scheme is On-line construction, quick reparation, can be interrupted and apply
It is controllable that work, progress are adjustable.Specifically, stop hole is beaten in the end at bistrique shrouding cracking, cracking further diffusion is prevented, in bistrique
Stop hole is stamped in two ends at shrouding cracking, and it act as preventing cracking from continuing to develop, and is stopped just as current.Only
The effect of ceasma is very big, plays conclusive effect, exactly allows cracking position control within the scope of certain, indiffusion,
Laid a solid foundation for the construction of next step.Installation bracket frock clamp is fixed with sealing glue sticking and bolt, reaches blind-mate,
Intensity also reaches requirement.The bracket frock clamp polishing made, handle well；Frock is pre-installed, cleaned, with alcohol handle
Grinding machine shrouding all cleans up with frock, it is impossible to leaves any impurity, fully ensures that construction quality；Gluing：Smooth whole
Clean frock clamp is with uniformly applying that last layer is special to cohere fluid sealant at grinding machine shrouding cracking, it is necessary to accomplish to smear uniform；Peace
Dress：In advance above the bolt planted frock clamp installation, it is necessary to can not have any uneven；It is fixed：Use spanner
Uniformly be fastened and fixed bolt, it is necessary to fluid sealant all fasten out can, the purpose for the arrangement is that having to reach frock
Any gap can not be left between fixture and grinding machine shrouding, just can guarantee that quality；Solidification：, must after all bolts uniformly fasten
Fluid sealant must be waited all to solidify after 6 hours at normal temperatures, can be started shooting after reaching intensity；Arrange scene, all construction workings
After, it is necessary to it is with accomplishing the complete material netfield of work clear；Test run：Equipment is sent a little, opens grinding machine test run.
Compared with prior art, beneficial effect possessed by the present invention is：
The form of construction work and traditional mode of the present invention is completely different, this scheme be On-line construction, quick reparation, can interrupted construction,
It is controllable that progress is adjustable.The present invention measures all construction datas in advance, makes frock clamp according to construction data, is applied 2/3
Preparation is used as between man-hour, is constructed online after shutting down, according to the degree mounting tool fixture of cracking, is installed a collection of
Device power-up test run afterwards, process program is adjusted according to operational situation and detection data at any time, accomplishes this project progress and work
It is controllable that Cheng Zhiliang is adjustable.The circular runout value of crawler shoe band is adjusted with linearity in work progress, has reached equipment peace
For the national games turn of requirement.Grinding machine is in online welding process for the first time, because welding stress grinding machine crawler shoe band is in maintenance process, crawler shoe
The radial-deformation of band is larger, and be above standard scope.Linearity also above critical field within, therefore must be right in work progress
Deflection is adjusted.
Heat is not produced in work progress, secondary injury will not be caused to equipment, avoids excluding slipper shoes damage completely
Situation.The double crawler shoes of this grinding machine are online in quick repair process, it is contemplated that any object says can all there be heat expansion from physics angle
The phenomenon of shrinkage, the second is having drawn the failure of lesson and appearance of the last time in wire bonding, therefore avoid and appoint in work progress
What thermal source, by the way of bolt fixation, thus having reached will not be to equipment, i.e., grinding machine crawler shoe band causes any secondary
Injury, so as to reach the damage for avoiding slipper shoes completely, equipment safety, the continuous, purpose of stable operation have been finally reached it.
Brief description of the drawings
Fig. 1 is the online rapid-maintenance special tooling structural representation of large-sized grinder crawler shoe band.
Wherein, 1, fixed plate 1, fixed plate 23, stiffener plate.
Embodiment
Fig. 1 is highly preferred embodiment of the present invention, and 1 the present invention will be further described below in conjunction with the accompanying drawings.
Referring to the drawings 1：A kind of online rapid-maintenance special tooling of large-sized grinder crawler shoe band, including fixed plate 1 and fixation
Plate 22, is provided with stiffener plate 3 between fixed plate 1 and fixed plate 22, fixed plate 1 and fixed plate 22 are provided with screw.
Fixed plate 1 is fixedly connected with a side of fixed plate 22.Fixed plate 1 and fixed plate 22 are arc,
It is consistent with ball mill barrel radian to bend radian.Metal adhesive is coated with fixed plate 1 and fixed plate 22.
The steel plate being wholely set after fixed plate 1 and fixed plate 22 or bending.
A kind of online quick maintenance method of large-sized grinder crawler shoe band, comprises the following steps：1）Double crawler shoe bands are measured first
Circular runout value and linearity, measure data.
2）Measure and draw the particular location and length of grinding machine grinding head shrouding cracking, analyzed according to data, it is determined that by
Force and rapid-maintenance special tooling installation site；Determine stress point and the online rapid-maintenance special tooling of large-sized grinder crawler shoe band
The Scheme of Strengthening of installation site.
3）Measure grinding machine grinding head the shrouding length of fragmented parts, the outer arc length of crawler shoe band and cylinder radian, and remember everywhere
Record crack distribution situation.
4）Measure bistrique crawler shoe band and grind the absolute altitude of tail crawler shoe band, determine the absolute altitude of bistrique crawler shoe band than mill tail crawler shoe band
Absolute altitude is more than or equal to 1mm；Bistrique is measured with grinding the absolute altitude of tail crawler shoe band, it is determined whether in standard fitting limit, standard installation
Scope be bistrique with mill tail maintain an equal level or than grind tail it is high 1mm in；Bistrique and mill tail crawler shoe band absolute altitude be bistrique crawler shoe band peak with
The peak of tail crawler shoe band is ground as in the range of 0-1mm.
5）Judge bistrique crawler shoe band circular runout value whether ﹤ 0.5mm, determine crawler shoe band deflection maximum point.Measure bistrique
With the circular runout value and linearity of the double crawler shoes of mill tail, it can be drawn according to data above analysis, bistrique crawler shoe band circular runout value
Whether standard figures is exceeded, standard is：Circular runout value ﹤ 0.5mm, deform serious specific regional location and be marked, it is determined that
Deflection maximum point is the region for needing to reinforce using special tooling；The slipper shoes circular runout value standard of grinding machine is≤0.5mm,
Linearity is 0.02mm/m.The numerical value of physical device is exceeded very serious, circular runout value >=1.2mm, linearity 0.3mm/
M, it can so cause slipper shoes Wa Wengao or even damage slipper shoes, if do not eliminated thoroughly, consequence is very serious.Online quick reparation
Where the main reason for having to find out radial missing during crawler shoe, eventually the reason for this is that bistrique shrouding is after secondary cracking,
Its present position support force diminishes, and causes shrouding to deform, so as to cause crawler shoe band local deformation, uneven, linearity deviation
It is excessive.Comprehensive analysis reason, the root for only finding problem could preferably solve this problem, be adjusted in work progress
It is whole, meet equipment safety stable operation.Main Adjusted Option is：It is worth too small place in circular runout to be used with special frock
Jack top crawler shoe band, adjusts data slowly, reaches in the margin of tolerance.
6）Frock is made, frock uses two-sided welding；Frock is made, described large-sized grinder crawler shoe band special tooling is necessary
Two-sided welding is carried out, frock must be heated in welding process, be incubated after welding in holding furnace, then
Cooled under the environment of nature；Heating-up temperature is 200 degree, and soaking time is 2 hours.
7）Determine the head and the tail position of shrouding cracking, the dust then cleared up above grinding mill barrel and bistrique shrouding, paint and
Residue is stayed in weldering；The specific quick reparation step in scene after frock completion of processing, it is first determined the head and the tail position of shrouding cracking, Ran Houqing
Reason grinding mill barrel stays residue with the dust above bistrique shrouding, paint and weldering.
8）Dye penetrant inspection, end crack location is determined, the position of bistrique shrouding cracking is coloured before stop hole is beaten,
The final most end end position for determining crackle；Dye penetrant inspection be all fillet weld seams after the completion of examined using 100% dye penetrant inspection
Survey, the radian of the special reinforcement frock of making is consistent with the radian of ball mill cracks mating surface, is repaiied according to actual radian scene
Whole its welds compactness.
9）Stop hole is beaten, least significant end beats stop hole at the two of shrouding with drill bit.
10）The double crawler shoe deflection maximums of grinding machine are adjusted, adjust the distortion inaccuracy to crawler shoe band in 0.5-0.7mm
Between；The double crawler shoe deflection maximums of grinding machine are adjusted, analyzed from the linearity of crawler shoe band, is first controlled and adjusted with dial gauge
Whole amount, then certain data of jack-uping, while with jack top, while observing the data of dial gauge, it is adjusted to crawler shoe
The deflection of band is within control range, i.e. between 0.5-0.7mm, the data exactly before measurement are defined distortion inaccuracy,
After adjustment between 0.5-0.7mm.
11）Frock is pre-installed, and the frock processed is filled to cylinder cracking position in advance, is consolidated with high-strength bolt by frock is reinforced
It is fixed；
Frock is pre-installed, and the frock processed is filled to cylinder cracking position in advance, the particular location of fixing bolt is determined, uses magnetic force
It is drilled in equipment according to fixation hole drilling, the tapping for reinforcing frock, it is ensured that wear-resisting lining is not damaged, and will be added with high-strength bolt
Gu frock is fixed.
The double crawler shoes of this grinding machine are online in quick repair process, it is contemplated that any object says can all there be heat from physics angle
The phenomenon of swollen shrinkage, the second is having drawn the failure of lesson and appearance of the last time in wire bonding, therefore avoided in work progress
Any thermal source, by the way of bolt fixation, any two will not be caused to equipment, i.e. grinding machine crawler shoe band by thus having reached
Secondary injury, so as to reach the damage for avoiding slipper shoes completely, equipment safety, the continuous, purpose of stable operation have been finally reached it.
12）Surface clean, mating surface is cleaned with cleaning agent before mounting tool, remove all impurity, then frock and cylinder
Body is smeared metal binding agent and is bonded, and fastens plantation bolt installation and strengthen frock；Cleaned before mounting tool with cleaning agent
Mating surface, remove all impurity, reach frock and mother metal it is completely viscous and, with cleaning agent clean mating surface it is complete totally after, frock
Metal binding agent is smeared with cylinder, is bonded with metal binding agent, frock is strengthened in then fastening plantation bolt installation；Installing
During reinforcing frock, the fit dimension of mating surface, particularly corner are tackled, progress is levelling by hand, and it is tight to reach cooperation.
13）First two pieces of reinforcement frocks of installation, then carry out test run, confirm that situation without exception occurs, recycling is repeatedly stopped
Car neutral, more special reinforcement frocks of set are installed.First installation can only install two pieces of reinforcement frocks, then carry out test run and confirm its effect
Fruit, equipment operation is good after putting into practice test run, and situation without exception occurs, empty using repeatedly parking further according to scheduling of production
Gear, 10 sets of special reinforcement frocks are installed, until ensureing to be reinforced at all crackings, reach former use condition requirement.
The specific duration arranges：In-site measurement needed for 0.5 working day, made special tooling according to measurement size, all
Special tooling, which makes to finish, needs 10 working days.Stop hole is beaten at scene, and drilling, tapping are, it is necessary to 0.5 working day.Cleaning surface,
Special tooling is strengthened in installation.Installing a set of special tooling needs 1 working day（Including drilling, tapping, cleaning, installation, reinforcing）.
After installation is repaired, solidification can drive after 4 hours.
The form of construction work and traditional mode of the present invention is completely different, and this scheme is On-line construction, quick reparation, can be interrupted and apply
It is controllable that work, progress are adjustable.
The traditional arrangement and method for construction to go wrong is two kinds：One is that grinding machine changes cylinder, and that time consuming will take material,
The most the most important thing is cylinder fabrication cycle is 100 working days, process-cycle length, complex manufacturing process, crudy is such as ensured
If have to wait after barrel soldering it is weathering can, and cold crack, fire check occurs in welding process, connects
Head plastic deformation etc. can not occur situations such as meeting property.Secondly carry out welding grinding mill barrel cracking position to be online, it is as split
Split position and break mouth and re-start welding.Deflection is being difficult to control in welding process in the drawbacks of wire bonding maximum, easily
Cause crawler shoe band to deform, as cause crawler shoe band radial deformation uncontrollable big with linearity deflection.This scheme is although objective
Deflection can be ensured in welding process in theory in control range, but it is tight that the deformation of crawler shoe band is ultimately caused after constructing
Weight, causes slipper shoes to damage, by forced-stopping machine.
And the present invention is exactly to measure all construction datas in advance, frock clamp is made according to construction data, utilizes 2/3
Engineering time does homework, and is constructed online after shutting down, and according to the degree mounting tool fixture of cracking, installs a collection of
Device power-up test run afterwards, process program is adjusted according to operational situation and detection data at any time, accomplishes this project progress and work
It is controllable that Cheng Zhiliang is adjustable.The circular runout value of crawler shoe band is adjusted with linearity in work progress, has reached equipment peace
For the national games turn of requirement.Grinding machine is in online welding process for the first time, because welding stress grinding machine crawler shoe band is in maintenance process, crawler shoe
The radial-deformation of band is larger, and be above standard scope.Linearity also above critical field within, therefore must be right in work progress
Deflection is adjusted.
Specifically, stop hole is beaten in the end at bistrique shrouding cracking, cracking further diffusion is prevented, is ftractureed in bistrique shrouding
Stop hole is stamped in two ends at place, and it act as preventing cracking from continuing to develop, and is stopped just as current.The work of stop hole
With very greatly, conclusive effect is played, exactly allows cracking position control within the scope of certain, indiffusion, in next step
Construction lay a solid foundation.Installation bracket frock clamp is fixed with sealing glue sticking and bolt, reaches blind-mate, intensity also reaches
To requiring.The bracket frock clamp polishing made, handle well；Frock is pre-installed, cleaned, with alcohol grinding machine shrouding
All cleaned up with frock, it is impossible to leave any impurity, fully ensure that construction quality；Gluing：In smooth clean and tidy frock
Uniformly apply that last layer is special to cohere fluid sealant at fixture and grinding machine shrouding cracking, it is necessary to accomplish to smear uniform；Installation：Frock
Fixture installation is in advance above the bolt planted, it is necessary to can not be had any uneven；It is fixed：Uniformly fastened with spanner solid
Determine bolt, it is necessary to fluid sealant all fasten out can, the purpose for the arrangement is that having to reach frock clamp and grinding machine
Any gap can not be left between shrouding, just can guarantee that quality；Solidification：All bolts are uniformly after fastening, it is necessary at normal temperatures 6
Wait fluid sealant all to solidify after hour, can be started shooting after reaching intensity；Arrangement is live, after all construction workings, it is necessary to
It is with accomplishing the complete material netfield of work clear；Test run：Equipment is sent a little, opens grinding machine test run.
Heat is not produced in work progress, secondary injury will not be caused to equipment, avoids excluding to slide in work progress completely
Heat is not produced, secondary injury will not be caused to equipment, avoids excluding the situation of slipper shoes damage completely.
The double crawler shoes of this grinding machine are online in quick repair process, it is contemplated that any object says can all there be heat from physics angle
The phenomenon of swollen shrinkage, the second is having drawn the failure of lesson and appearance of the last time in wire bonding, therefore avoided in work progress
Any thermal source, by the way of bolt fixation, any two will not be caused to equipment, i.e. grinding machine crawler shoe band by thus having reached
Secondary injury, so as to reach the damage for avoiding slipper shoes completely, equipment safety, the continuous, purpose of stable operation have been finally reached it.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (9)
- A kind of 1. online quick maintenance method of large-sized grinder crawler shoe band, it is characterised in that：Comprise the following steps：1）The circular runout value and linearity of double crawler shoe bands are measured first, measure data；2）Measure and draw the particular location and length of grinding machine grinding head shrouding cracking, analyzed according to data, determine stress point With rapid-maintenance special tooling installation site；3）Grinding machine grinding head the shrouding length of fragmented parts, the outer arc length of crawler shoe band and cylinder radian everywhere are measured, and records and splits Line distribution situation；4）Measure bistrique crawler shoe band and grind the absolute altitude of tail crawler shoe band, determine absolute altitude of the absolute altitude of bistrique crawler shoe band than grinding tail crawler shoe band More than or equal to 1mm；5）Judge bistrique crawler shoe band circular runout value whether ﹤ 0.5mm, determine crawler shoe band deflection maximum point；6）Frock is made, frock uses two-sided welding；7）The head and the tail position of shrouding cracking is determined, grinding mill barrel is then cleared up and is stayed with the dust above bistrique shrouding, paint and weldering Residue；8）Dye penetrant inspection, end crack location is determined, the position of bistrique shrouding cracking is coloured before stop hole is beaten, finally Determine the most end end position of crackle；9）Stop hole is beaten, least significant end beats stop hole at the two of shrouding with drill bit；10）The double crawler shoe deflection maximums of grinding machine are adjusted, adjust to the distortion inaccuracy of crawler shoe band 0.5-0.7mm it Between；11）Frock is pre-installed, and the frock processed is filled to cylinder cracking position in advance, is fixed with high-strength bolt by frock is reinforced；12）Surface clean, mating surface is cleaned with cleaning agent before mounting tool, remove all impurity, then frock applies with cylinder Smear metal binding agent to be bonded, and fasten plantation bolt installation and strengthen frock；13）First two pieces of reinforcement frocks of installation, then carry out test run, confirm that situation without exception occurs, recycle repeatedly parking empty Gear, more special reinforcement frocks of set are installed.
- 2. the online quick maintenance method of large-sized grinder crawler shoe band according to claim 1, it is characterised in that：Step 4）It is described Bistrique with mill tail crawler shoe be bistrique crawler shoe with absolute altitude the peak with peak and mill tail crawler shoe band is in the range of 0-1mm.
- 3. the online quick maintenance method of large-sized grinder crawler shoe band according to claim 1, it is characterised in that：Step 6）It is described Heating-up temperature be 200 degree, soaking time be 2 hours.
- 4. the online quick maintenance method of large-sized grinder crawler shoe band according to claim 1, it is characterised in that：Step 8）It is described Dye penetrant inspection be all fillet weld seams after the completion of detected using 100% dye penetrant inspection, the special reinforcement frock of making Radian is consistent with the radian of ball mill cracks mating surface, and according to actual radian in situ conditioning, it welds compactness.
- 5. the large-sized grinder crawler shoe band used in the online quick maintenance method of large-sized grinder crawler shoe band described in claim 1 is fast online Speed maintenance special tooling, it is characterised in that：Including fixed plate one（1）With fixed plate two（2）, fixed plate one（1）With fixed plate two （2）Between be provided with stiffener plate（3）, fixed plate one（1）With fixed plate two（2）It is provided with screw.
- A kind of 6. online rapid-maintenance special tooling of large-sized grinder crawler shoe band according to claim 5, it is characterised in that：Institute The fixed plate one stated（1）With fixed plate two（2）A side be fixedly connected.
- A kind of 7. online rapid-maintenance special tooling of large-sized grinder crawler shoe band according to claim 5, it is characterised in that：Institute The fixed plate one stated（1）With fixed plate two（2）For the steel plate being wholely set after bending.
- A kind of 8. online rapid-maintenance special tooling of large-sized grinder crawler shoe band according to claim 5, it is characterised in that：Institute The fixed plate one stated（1）With fixed plate two（2）It is consistent with ball mill barrel radian for arc, bending radian.
- A kind of 9. online rapid-maintenance special tooling of large-sized grinder crawler shoe band according to claim 5, it is characterised in that：Institute The fixed plate one stated（1）With fixed plate two（2）It is upper to be coated with metal adhesive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710988305.1A CN107790954A (en) | 2017-10-21 | 2017-10-21 | A kind of online quick maintenance method of large-sized grinder crawler shoe band and special tooling |
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| CN201710988305.1A CN107790954A (en) | 2017-10-21 | 2017-10-21 | A kind of online quick maintenance method of large-sized grinder crawler shoe band and special tooling |
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| CN106927364A (en) * | 2017-02-27 | 2017-07-07 | 中冶建筑研究总院有限公司 | The antifatigue connection method of steel crane beam and rail |
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| JP3999114B2 (en) * | 2002-11-29 | 2007-10-31 | トピー工業株式会社 | Reinforcing method and structure of notched corner of bridge main girder |
| CN101890610A (en) * | 2010-08-09 | 2010-11-24 | 中信重工机械股份有限公司 | Field repairing method of welding cracks of feeding slip-ring body of large-sized slide mill |
| CN201824461U (en) * | 2010-10-18 | 2011-05-11 | 山东兖澳机电科技有限公司 | Online maintenance craft equipment for cement mill |
| CN104060526A (en) * | 2014-06-30 | 2014-09-24 | 长安大学 | Anti-fatigue structure detail of vertical stiffening rib at web plate gap of steel bridge |
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Application publication date: 20180313 |