CN108862091A - A kind of jacking apparatus and method for replacing ladle turntable bearing - Google Patents
A kind of jacking apparatus and method for replacing ladle turntable bearing Download PDFInfo
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- CN108862091A CN108862091A CN201810720078.9A CN201810720078A CN108862091A CN 108862091 A CN108862091 A CN 108862091A CN 201810720078 A CN201810720078 A CN 201810720078A CN 108862091 A CN108862091 A CN 108862091A
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- China
- Prior art keywords
- ladle
- jacking
- turntable bearing
- slippage bracket
- revolving platform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
- B22D41/13—Ladle turrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0807—Manifolds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A kind of jacking apparatus and method for replacing ladle turntable bearing, belongs to conticaster ladle turret maintenance of equipment and method and technology field, the ladle turntable bearing for quick-replaceable ladle turret.Its technical solution is：The present invention replaces ladle turntable bearing using the replacement tool of jacking hydraulic device, slippage bracket, positioning device composition.Old ladle turntable bearing is dismantled and is removed by four groups of identical jacking hydraulic device synchronization of jacking up ladle turrets, slippage bracket, and new ladle turntable bearing is moved into and is installed, and positioning device guarantees that ladle turret and ladle turntable bearing are accurately positioned.The present invention solves the problems, such as that the replacement of ladle turntable bearing is complicated and correction is difficult, the ladle turntable bearing of ladle turret can fast and efficiently be replaced, to significantly shorten the maintenance activity time, improve construction efficiency, reduce the labor intensity of worker, and the installation accuracy of ladle turntable bearing is considerably enhanced, reduce the security risk in replacement process.
Description
Technical field
The present invention relates to the ratio jacking slide devices and method of a kind of ladle turntable bearing for replacing ladle turret, belong to
In conticaster ladle turret maintenance of equipment and method and technology field.
Background technique
Ladle turret is that have revolution using the most universal ladle bearing and acknowledgement of consignment equipment in current conticaster, rise
The multiple functions such as drop, molten steel weighing, locking and ladle stamp heat preservation.Main function is to receive full Baogang's liquid, is turned round by ladle
Platform revolution by molten steel from steel is awarded across being transported to conticaster casting bay, the molten steel in ladle injected into pans, while will pour
Empty ladle, which is back to, awards steel across so that overhead traveling crane is transported, to realize sequence casting.Ladle turntable bearing is the pass of ladle turret
Key member is mainly made of bearing inner race, outer ring, ball etc., and ladle turntable bearing outer ring and rotating part pass through high-intensitive spiral shell
It tethers and connects, bearing inner race is connect by high-strength bolt with pedestal.Ladle turntable bearing is revolving platform stationary part and rotation section
Point convergence piece, can bear and transmit vertical load from the above rotating part of revolving platform firm banking, horizontal load and incline
Turn over torque.Structure is complicated for ladle turret, weight is big, therefore the replacement difficulty of ladle turntable bearing is big.
The conticaster ladle turntable bearing of steel mill's replacement both at home and abroad has following two method at present.
1, disintegration replacement method
This method is exactly to remove ladle stamp device.Ladle stamp mechanism, bracket, upper connecting rod, lower link and lifting arm are removed,
Lifting cylinder, turntable, slip ring, fluid pressure line, electric wiring, ladle turret turntable bearing etc. are removed, is only left until tearing open
Ladle turret firm banking, then new ladle turntable bearing is reinstalled, and restore the various equipment above it, this side
Method disassembles and installs heavy workload, and replacing construction is long.
2, integrated lifting
This method is the equipment integral jacking above the turntable ladle turret, then replaces ladle turntable bearing, this
Kind method is simple, time saving, laborsaving.It is general in this way to be jacked with four hydraulic jacks or hydraulic cylinder, four hydraulic jacks
Or hydraulic cylinder is all alternately to jack, this method is difficult to accomplish synchronization of jacking up in operation, will result in ladle turret
Turntable above equipment shift, equipment once shifts above the turntable of ladle turret, carry out correction be very tired
Difficult.
Summary of the invention
Technical problem to be solved by the invention is to provide it is a kind of replace ladle turntable bearing jacking apparatus and method, this
Kind replacement device and method can reduce the workload more to change jobs, improve installation accuracy, avoid on the turntable of ladle turret
Face equipment deviates, and improves work efficiency and safety coefficient.
Solve above-mentioned technical problem technical solution be：
It is a kind of replace ladle turntable bearing jacking apparatus, it include jacking hydraulic part, slippage bracket, jacking hydraulic part by
Electromagnetic shut-off valve and four groups of identical jacking hydraulic devices compositions, every group of jacking hydraulic device include proportioning valve, jacking hydraulic cylinder,
Hydraulic control one-way valve, overflow valve, the jacking pedestal of four jacking hydraulic cylinders are individually positioned in below two revolving platform lifting arms, and four
The mandril for jacking hydraulic cylinder is opposite with four transverse arm heels of two revolving platform lifting arms respectively, and hydraulic delivery pipe passes through electromagnetism
Stop valve is connected with one end of the proportioning valve of four groups of jacking hydraulic devices respectively, four proportioning valves pass through respectively hydraulic pipeline and
Four hydraulic control one-way valves, four jacking hydraulic cylinders are linked in sequence, and four jacking hydraulic cylinders are connected with four overflow valves respectively, and four
There is displacement sensor in a jacking hydraulic cylinder respectively, in electromagnetic shut-off valve, proportioning valve, hydraulic control one-way valve and four jacking hydraulic cylinders
Displacement sensor be connected respectively with PLC controller and computer, before slippage bracket is by slippage bracket frame, slippage bracket
Leg, slippage bracket back leg composition, slippage bracket frame is rectangle horizontal steel frame, after slippage bracket foreleg and slippage bracket
Leg is respectively perpendicular the front-end and back-end being welded below slippage bracket frame, and slippage bracket frame is placed on revolving platform firm banking
Top, the upper plane of slippage bracket frame is opposite with the bottom surface of ladle turntable bearing.
The jacking apparatus of above-mentioned replacement ladle turntable bearing, it there are also positioning device, positioning device by four positioning pins and
Four positioning steel tube compositions, four positioning pins are round steel, and the round steel outer diameter of positioning pin and the internal diameter of positioning steel tube match, four
Positioning pin is vertically welded in the turret base of revolving platform, and four positioning steel tubes are vertically welded on revolving platform firm banking, and four
A positioning pin is inserted respectively into four positioning steel tubes, and the depth that four positioning pins are inserted into four positioning steel tubes is greater than 400mm, and four
A positioning pin and four positioning steel tubes are along the ladle turret circle spacing 90oDistribution.
The jacking apparatus of above-mentioned replacement ladle turntable bearing, the slippage bracket frame stretch out in slippage bracket back leg direction
Revolving platform firm banking, the length of stretching are greater than the diameter of a ladle turntable bearing, are equipped with below slippage bracket frame
Multiple parallel slippage bracket rear leg slippage bracket frames.
A kind of jacking method of the replacement ladle turntable bearing using above-mentioned jacking apparatus, it is carried out using following steps：
A. ladle turret, which goes to open, pours the vertical position of work, then protective demolition revolving platform outer protection cover is removed with pneumatic pick
Refractory brick, then working face around revolving platform is cleaned out, all control lines and medium hose are removed, slip ring in revolving platform is removed
All connecting pipes hang out slip ring using overhead traveling crane cooperation；
B. the apparatus for welding and positioning on ladle turret, four positioning pins are vertically welded in the turntable of revolving platform using 50 round steel of Φ
On pedestal, four 50 positioning steel tubes of Φ are welded on revolving platform firm banking, and four positioning pins and four positioning steel tubes are along steel
Packet revolving platform circle spacing 90o distribution；
C. ladle turntable bearing inner ring screw is removed, the jacking pedestal that four jack hydraulic cylinder is placed in two revolving platform liftings
Under arm, four jacking hydraulic cylinders are linked up with high-pressure hose with control valve platform, four is jacked the displacement sensing of hydraulic cylinder
Device is coupled by electric wire with PLC controller, and is connected into computer together, is formed a four cylinder closed-loop synchronizations and is controlled hydraulic structure,
And by computer monitoring, alarm, display；
D. the jacking pedestal of four jacking hydraulic cylinders will pad levelling, and four vertex are four cross of two revolving platform lifting arms
Arm heel starts four jacking hydraulic cylinders, and four jacking hydraulic cylinders keep height consistent, while slowly jacking, by revolving platform top
Play 400mm；
E. the slippage bracket frame that slippage bracket back leg is welded is placed on the revolving platform firm banking below revolving platform, so
Afterwards in the front end mounting slip bracket foreleg of slippage bracket frame, while by slippage bracket foreleg, slippage bracket back leg and turning round
Platform firm banking is welded to connect；
F. four jacking hydraulic cylinder synchronous are declined, makes ladle turntable bearing close to the plane of slippage bracket frame, ladle of dismantling
Turntable bearing outer ring screw, falls on ladle turntable bearing on slippage bracket frame plane；
G. it restarts four jacking hydraulic cylinders and jacks ladle turret lifting arm upwards, then with jack by ladle turntable bearing
It slowly pulls out along the plane of slippage bracket frame, is hung on one side with overhead traveling crane, new ladle turntable bearing is hung to sliding branch
It is installed in place after frame frame with jack, at this time it should be noted that marking on ladle turntable bearing Internal and external cycle（S）Point will be placed on ladle and return
Turntable ladle receives on position and the position of ladle pouring position line vertical direction, allows jacking hydraulic cylinder synchronous to decline, installs ladle
Screw and fastening between turntable bearing outer ring and turntable bottom plate；
H. jacking hydraulic cylinder synchronous rises, and removes slippage bracket, allows jacking hydraulic cylinder synchronous to decline, installs in ladle turntable bearing
Screw between circle and revolving platform firm banking, fixed ladle turntable bearing connect each position, and connection spiral shell inspection will be symmetrically
Fastening, each bolt pretightening will reach drawing requirement；
I. dress hydraulic slip ring, fluid pressure line, electric wiring, transmission device etc. are returned, refractory brick and outer protection cover restore, then right
Mounted equipment is debugged, and is delivered production unit after trying successfully and is used.
The beneficial effects of the invention are as follows：
The present invention carries out ladle turntable bearing using the replacement tool of jacking hydraulic device, slippage bracket, positioning device composition
Replacement.Four groups of identical jacking hydraulic devices can be with synchronization of jacking up ladle turret；Slippage bracket can be by old ladle turntable shaft
It holds disassembly to remove, and new ladle turntable bearing is moved into and is installed；Positioning device can guarantee ladle turret and ladle turntable shaft
Hold accurate positionin.
The present invention is to replace initiating for ladle turret ladle turntable bearing device and method, solves ladle turntable bearing
The problem that replacement is complicated and correction is difficult, can fast and efficiently replace the ladle turntable bearing of ladle turret, thus substantially
The maintenance activity time is shortened to degree, construction efficiency is improved, reduces the labor intensity of worker, and considerably enhance ladle
The installation accuracy of the ladle turntable bearing of revolving platform, reduces the security risk in replacement process, in industry has and admirably push away
Wide use value.
Detailed description of the invention
Fig. 1 is ladle turret structural schematic diagram before jacking；
Fig. 2 is the steel ladle rotary table structural schematic diagram for having jacked certain altitude；
Fig. 3 is the schematic diagram for jacking hydraulic part；
Fig. 4 is the A-A cross-sectional view of Fig. 2；
Fig. 5 is the B-B cross-sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of revolving platform lifting arm；
Fig. 7,8,9,10,11,12 are oil cylinder source maps.
It is marked in figure as follows:Electromagnetic shut-off valve 1, the first proportioning valve 2, the second proportioning valve 3, first jack hydraulic cylinder 4, first
Hydraulic control one-way valve 5, the first overflow valve 6, second jacking hydraulic cylinder 7, the second hydraulic control one-way valve 8, the second overflow valve 9, third jacking
Hydraulic cylinder 10, third hydraulic control one-way valve 11, third overflow valve the 12, the 4th jack hydraulic cylinder 13, the 4th hydraulic control one-way valve the 14, the 4th
Overflow valve 15, third proportioning valve 16, the 4th proportioning valve 17, turntable bottom plate 18, jacking pedestal 19, ladle turntable bearing 20, revolution
Platform firm banking 21, positioning steel tube 22, positioning pin 23, the second lifting arm 24, the first lifting arm 25, turret base 26, sliding branch
Three legs 31, revolving platform after two legs 30, slippage bracket after the latter leg 29 of frame foreleg 27, slippage bracket 28, slippage bracket, slippage bracket
Firm banking upper surface 32, slippage bracket frame 33, displacement sensor 34.
Specific embodiment
The jacking apparatus of replacement ladle turntable bearing of the invention is by jacking hydraulic part, slippage bracket 28 and positioning device
Composition.
Jacking hydraulic part is made of electromagnetic shut-off valve 1 and four groups of identical jacking hydraulic devices, every group of hydraulic dress of jacking
It sets including proportioning valve, jacking hydraulic cylinder, hydraulic control one-way valve, overflow valve；Slippage bracket 28 is by slippage bracket frame 33, slippage bracket
Three legs 31 form after two legs 30, slippage bracket after the latter leg 29 of foreleg 27, slippage bracket, slippage bracket；Positioning device is by positioning
Steel pipe 22, positioning pin 23 form.
The jacking pedestal 19 of Fig. 1,2 displays, four jacking hydraulic cylinders of four groups of jacking hydraulic devices are individually positioned in first
Lifting arm 25, the lower section of the second lifting arm 24, the mandril of four jacking hydraulic cylinders respectively with the first lifting arm 25, the second lifting arm 24
Four transverse arm heels it is opposite, four jacking hydraulic cylinders play jacking to revolving platform.
Fig. 1,2 displays, positioning device are made of four positioning pins 23 and four positioning steel tubes 22.Four positioning pins 23 are circle
Steel, the round steel outer diameter and the internal diameter of positioning steel tube 22 of positioning pin 23 match, and four positioning pins 23 are vertically welded in revolving platform
In turret base 26, four positioning steel tubes 22 are vertically welded on revolving platform firm banking 21, and four positioning pins 23 are inserted into respectively
Into four positioning steel tubes 22, the depth that four positioning pins 23 are inserted into four positioning steel tubes 22 is greater than 400mm, four positioning pins 23
With four positioning steel tubes 22 along the ladle turret circle spacing 90oDistribution, during jacking from positioning, guiding role.
Fig. 4,5 displays, slippage bracket frame 33 is rectangle horizontal steel frame, and slippage bracket foreleg 27 is vertically welded in
The front end of 33 lower section of slippage bracket frame, slippage bracket frame 33 stretch out revolving platform firm banking in slippage bracket back leg direction
21, the length of stretching is greater than the diameter of a ladle turntable bearing 20, and the lower section of slippage bracket frame 33 is equipped with multiple parallel
Slippage bracket back leg, be three legs 31 after two legs 30, slippage bracket after the latter leg 29 of slippage bracket, slippage bracket respectively.
In use, first by three legs 31 after two legs 30, slippage bracket after the latter leg 29 of slippage bracket, slippage bracket
It is welded to connect with slippage bracket frame 33, then slippage bracket frame 33 is placed on to the top of revolving platform firm banking 21, made
The upper plane of slippage bracket frame 33 is opposite with the bottom surface of ladle turntable bearing 20, then by slippage bracket foreleg 27 and slides branch
The front end of frame frame 33 is welded to connect, then will be by slippage bracket foreleg 27, the latter leg 29 of slippage bracket and the fixed bottom of revolving platform
Seat 21 is welded to connect.
Fig. 3 shows that hydraulic delivery pipe passes through one of electromagnetic shut-off valve 1 respectively with the proportioning valve of four groups of jacking hydraulic devices
End is connected, and four proportioning valves pass through hydraulic pipeline respectively and four hydraulic control one-way valves, four jacking hydraulic cylinders are connected, and four
Jacking hydraulic cylinder is connected with four overflow valves respectively, there is displacement sensor 34, electromagnetism cutting in four jacking hydraulic cylinders respectively
Valve 1, proportioning valve, hydraulic control one-way valve and four jacking hydraulic cylinders in displacement sensor 34 respectively with PLC controller and computer
It is connected, realizes four jacking hydraulic cylinder synchronous jackings, error is within millimeter.
Fig. 3 shows that the course of work of jacking hydraulic part of the invention is as follows：
Jacking（Operator presses jacking button）：
The electromagnet 1DT of electromagnetic shut-off valve 1 must not be electric, and the first jacking jacking of hydraulic cylinder 4, second hydraulic cylinder 7, third jacking are hydraulic
Cylinder the 10, the 4th jacks the ratio of the first proportioning valve 2 of hydraulic cylinder 13, the second proportioning valve 3, third proportioning valve 16, the 4th proportioning valve 17
Example electromagnet PV1, PV2, PV3, PV4 voltage is -10V, under the action of PLC controller gives each electromagnet coil current, than
Example electromagnet PV1, PV2, PV3, PV4 generate suction, make the first proportioning valve 2, the second proportioning valve 3, third proportioning valve 16, the 4th ratio
The valve port of example valve 17 is opened, and pressure oil is through the first hydraulic control check valve 5, the second hydraulic control one-way valve 8, third hydraulic control one-way valve
11, the 4th hydraulic control one-way valve 14 respectively enters the first jacking hydraulic cylinder 4, second jacking hydraulic cylinder 7, third jacks hydraulic cylinder 10,
The rodless cavity of 4th jacking hydraulic cylinder 13 pushes four jackings hydraulic pistons and piston rod to jack upwards.In four jacking liquid
During cylinder pressure jacking, the displacement sensor 34 in each jacking hydraulic cylinder detects the location information of oneself and is transmitted to PLC
Controller, wherein first jacking hydraulic cylinder 4 be " main jacking hydraulic cylinder ", it detects that location information be standard, other three
The location information for jacking location information detected by the displacement sensor 34 of hydraulic cylinder and the first jacking hydraulic cylinder 4 compares,
The ratio electricity of the second proportioning valve 3, third proportioning valve 16, the 4th proportioning valve 17 is adjusted by PLC controller according to error size
The coil current of magnet PV2, PV3, PV4, to adjust the suction size of proportion electro-magnet PV2, PV3, PV4, to adjust the
Two proportioning valves 3, third proportioning valve 16, the 4th proportioning valve 17 output flow, to reach to the first mesh for dressing of jacking hydraulic cylinder 4
, realize that the first jacking hydraulic cylinder 4, second jacks hydraulic cylinder 7, third jacking hydraulic cylinder the 10, the 4th jacks the same of hydraulic cylinder 13
Step jacking.
Stop（Operator presses stop button）：
1 electromagnet 1DT of electromagnetic shut-off valve must not be electric, and the first jacking hydraulic cylinder 4, second jacks hydraulic cylinder 7, third jacks hydraulic cylinder
10, the ratio of the first proportioning valve 2 of the 4th jacking hydraulic cylinder 13, the second proportioning valve 3, third proportioning valve 16, the 4th proportioning valve 17
Electromagnet PV1, PV2, PV3, PV4 voltage is zero, and the first jacking hydraulic cylinder 4, second jacks hydraulic cylinder 7, third jacks hydraulic cylinder
10, the 4th jacking hydraulic cylinder 13 is in the first hydraulic control one-way valve 5, the second hydraulic control one-way valve 8, third hydraulic control one-way valve 11, the 4th liquid
It is upper self-locking to control the effect of check valve 14.
Decline（Operator presses declines button）：
1 electromagnet 1DT of electromagnetic shut-off valve obtains electric, the first hydraulic control one-way valve 5, the second hydraulic control one-way valve 8, third hydraulic control one-way valve
11, the 4th hydraulic control one-way valve 14 is opened by the pressure oil of electromagnetic shut-off valve 1.The first jacking jacking of hydraulic cylinder 4, second hydraulic cylinder 7,
Third jacks the first proportioning valve 2, the second proportioning valve 3, the third proportioning valve the 16, the 4th that hydraulic cylinder the 10, the 4th jacks hydraulic cylinder 13
Proportion electro-magnet PV1, PV2, PV3, PV4 voltage of proportioning valve 17 is+10V, gives each electromagnet coil current in PLC controller
Under the action of, proportion electro-magnet PV1, PV2, PV3, PV4 generate suction, make the first proportioning valve 2, the second proportioning valve 3, third ratio
Valve 16, the 4th proportioning valve 17 valve port open, pressure oil respectively enter the first jacking hydraulic cylinder 4, second jacking hydraulic cylinder 7,
Third jacks the rod chamber that hydraulic cylinder the 10, the 4th jacks hydraulic cylinder 13, under the piston and piston rod that push four jacking hydraulic cylinders
Drop.The hydraulic oil of four jacking hydraulic cylinder rodless cavities is through the first hydraulic control one-way valve 5, the second hydraulic control one-way valve 8, third fluid-control one-way
Valve 11, the 4th hydraulic control one-way valve 14 are respectively by the first proportioning valve 2, the second proportioning valve 3, third proportioning valve 16, the 4th proportioning valve 17
T mouth flow back to fuel tank.
During four jacking hydraulic cylinders decline, the displacement sensor 34 in each jacking hydraulic cylinder detects oneself
Location information and be transmitted to PLC controller, wherein first jacking hydraulic cylinder 4 be " main jacking hydraulic cylinder ", it detects that position
Information is standard, location information detected by other three jacking hydraulic cylinder displacement sensors 34 and the first jacking hydraulic cylinder 4
Location information compare, the second proportioning valve 3, third proportioning valve the 16, the 4th are adjusted by PLC controller according to error size
The coil current of proportion electro-magnet PV2, PV3, PV4 of proportioning valve 17, that is, adjust the suction of proportion electro-magnet PV2, PV3, PV4
Power size, so that the output flow of the second proportioning valve 3, third proportioning valve 16, the 4th proportioning valve 17 is adjusted, to reach to the first top
The purpose that hydraulic cylinder is dressed is risen, realizes that the first jacking hydraulic cylinder 4, second jacks hydraulic cylinder 7, third jacks hydraulic cylinder the 10, the 4th
Jack the synchronous decline of hydraulic cylinder 13.
The jacking method of replacement ladle turntable bearing of the invention, it is carried out using following steps：
The first step：Preparation
Ladle turret, which goes to open, pours the vertical position of work, protective demolition revolving platform outer protection cover, is then removed with pneumatic pick resistance to
Then firebrick is cleaned out working face around revolving platform, all control lines and medium hose are removed, and removes rotation in revolving platform
All connecting pipes of connector, overhead traveling crane cooperation hang out rotary joint, are respectively welded four in 20 upper and lower of revolving platform ladle turntable bearing
A positioning device is spaced 90 ° between each other, and 23 round steel of positioning pin is welded on the turret base 26 above ladle turntable bearing 20
On, positioning steel tube 22 is welded on revolving platform firm banking 21, guarantees that positioning pin 23 has more than 400mm long in positioning steel tube 22
The flexible surplus of degree.
Second step：Slippage bracket is placed in jacking
20 inner ring screw of ladle turntable bearing is removed, the first jacking jacking of hydraulic cylinder 4, second hydraulic cylinder 7, third jacking is hydraulic
Four jacking pedestals 19 that cylinder the 10, the 4th jacks hydraulic cylinder 13 are placed under the first lifting arm 25 and the second lifting arm 24, pedestal
Pad levelling, vertex is 25 4 transverse arm heels of the second lifting arm 24 and the first lifting arm, and four jacking hydraulic cylinders keep height
Degree is consistent, while slowly sliding is placed in 18 top of turntable bottom plate of revolving platform and the jack-up 400mm of ladle turntable bearing 20 by jacking
Bracket 28 is simultaneously reinforced.
Third step：Replace ladle turntable bearing 20
The first jacking hydraulic cylinder 4, second jacking hydraulic cylinder 7, third jacking hydraulic cylinder the 10, the 4th is allowed to jack hydraulic cylinder 13 and synchronize down
Drop, makes the 20-30mm above slippage bracket frame 33 of ladle turntable bearing 20,20 outer ring screw of ladle turntable bearing of dismantling,
Fall on ladle turntable bearing 20 on slippage bracket frame 33.Again the upward 400mm of turntable bottom plate 18 for jacking revolving platform, with
Chain slowly pulls out ladle turntable bearing 20 along slippage bracket frame 33, is hung to overhead traveling crane on one side, by new ladle turntable
Bearing 20 is hung on slippage bracket frame 33, is installed in place with jack, at this time it should be noted that 20 Internal and external cycle subscript of ladle turntable bearing
Note（S）Point will be placed on ladle turret ladle and receive on the position of position and ladle pouring position line vertical direction, allow the first top
It rises hydraulic cylinder 4, second and jacks hydraulic cylinder 7, the synchronous decline of the third jacking jacking hydraulic cylinder 13 of hydraulic cylinder the 10, the 4th, make turntable bottom
Plate 18 and ladle turntable bearing 20 are apart from being 20-30mm, the spiral shell between installation 20 outer ring of ladle turntable bearing and turntable bottom plate 18
Silk simultaneously fastens.
4th step：Jacking, removes and tears slippage bracket open
First jacking hydraulic cylinder 4, second jacks hydraulic cylinder 7, third jacking hydraulic cylinder the 10, the 4th jacks hydraulic cylinder 13 and synchronizes
It rises, removes slippage bracket 28, the first jacking hydraulic cylinder 4, second jacking hydraulic cylinder 7, third jacking hydraulic cylinder the 10, the 4th is allowed to jack
The synchronous decline of hydraulic cylinder 13 stops when ladle turntable bearing 20 and revolving platform firm banking 32 close to 20-30mm of upper surface
Only decline, the screw between 20 inner ring of ladle turntable bearing and revolving platform firm banking 21 is installed, four jacking hydraulic cylinders continue
Synchronous decline, fastens 20 inner ring screw of ladle turntable bearing, and connecting screw will be fastened symmetrically, and each bolt pretightening will reach
Drawing requirement.
5th step：Restorer
Dress hydraulic slip ring, fluid pressure line, electric wiring, transmission device etc. are returned, refractory brick and outer protection cover restore.
6th step：Test running
Mounted equipment is debugged, production unit is delivered after trying successfully and uses.
The section components of one embodiment of the present of invention are as follows：
Slippage bracket frame 33 is the frame structure made by the channel steel of 200mm, and lacing wire is done by the channel steel of 200mm in centre, below
There are slippage bracket foreleg 27 and slippage bracket back leg by the channel steel production of 200mm；
Positioning pin 23 uses the round steel of Φ 50, and positioning steel tube 22 uses the steel pipe of internal diameter 50mm；
Electromagnetic shut-off valve 1：DG3VP-3-103A-VM-U
The model of proportioning valve:D41FHB32C1NB00
The model of hydraulic control one-way valve: CKCB-XAN
Overflow valve: RDBA-LAN
Jack the model of hydraulic cylinder:Nonstandard oil cylinder.
Claims (4)
1. a kind of jacking apparatus for replacing ladle turntable bearing, it is characterised in that：It includes jacking hydraulic part, slippage bracket
（28）, hydraulic part is jacked by electromagnetic shut-off valve（1）Jacking hydraulic device composition identical with four groups, every group of jacking hydraulic device
Including proportioning valve, jacking hydraulic cylinder, hydraulic control one-way valve, overflow valve, the jacking pedestal of four jacking hydraulic cylinders（19）It places respectively
Below two revolving platform lifting arms, four jacking hydraulic cylinder mandril respectively with four transverse arms of two revolving platform lifting arms with
Portion is opposite, and hydraulic delivery pipe passes through electromagnetic shut-off valve（1）It is connected respectively with one end of the proportioning valve of four groups of jacking hydraulic devices
It connects, four proportioning valves pass through hydraulic pipeline respectively and four hydraulic control one-way valves, four jacking hydraulic cylinders are linked in sequence, four jackings
Hydraulic cylinder is connected with four overflow valves respectively, has displacement sensor respectively in four jacking hydraulic cylinders（34）, electromagnetic shut-off valve
（1）, proportioning valve, hydraulic control one-way valve and four jacking hydraulic cylinders in displacement sensors（34）Respectively with PLC controller and calculating
Machine is connected, slippage bracket（28）By slippage bracket frame（33）, slippage bracket foreleg（27）, slippage bracket back leg composition, it is sliding
Move Support frame（33）For rectangle horizontal steel frame, slippage bracket foreleg（27）Welding is respectively perpendicular with slippage bracket back leg
In slippage bracket frame（33）The front-end and back-end of lower section, slippage bracket frame（33）It is placed on revolving platform firm banking（21）'s
Top, slippage bracket frame（33）Upper plane and ladle turntable bearing（20）Bottom surface it is opposite.
2. the jacking apparatus of replacement ladle turntable bearing according to claim 1, it is characterised in that：There are also positioning dresses for it
It sets, positioning device is by four positioning pins（23）With four positioning steel（22）Pipe composition, four positioning pins（23）For round steel, positioning pin
（23）Round steel outer diameter and positioning steel tube（22）Internal diameter match, four positioning pins（23）It is vertically welded in the turntable of revolving platform
Pedestal（26）On, four positioning steel tubes（22）It is vertically welded in revolving platform firm banking（21）On, four positioning pins（23）Respectively
It is inserted into four positioning steel tubes（22）In, four positioning pins（23）It is inserted into four positioning steel tubes（22）Depth be greater than 400mm, four
A positioning pin（23）With four positioning steel tubes（22）Along the ladle turret circle spacing 90oDistribution.
3. the jacking apparatus of replacement ladle turntable bearing according to claim 1, it is characterised in that：Slippage bracket frame
（33）Revolving platform firm banking is stretched out in slippage bracket back leg direction（21）, the length of stretching is greater than a ladle turntable bearing
（20）Diameter, slippage bracket frame（33）Lower section multiple parallel slippage bracket rear leg slippage bracket frames are installed
（33）.
4. a kind of jacking method of the replacement ladle turntable bearing using above-mentioned jacking apparatus, it is characterised in that：It is using following
Step carries out：
Ladle turret, which goes to open, pours the vertical position of work, protective demolition revolving platform outer protection cover, is then removed with pneumatic pick resistance to
Firebrick, then working face around revolving platform is cleaned out, all control lines and medium hose are removed, slip ring institute in revolving platform is removed
There is connecting pipe, hangs out slip ring using overhead traveling crane cooperation；
The apparatus for welding and positioning on ladle turret, four positioning pins（23）Turning for revolving platform is vertically welded in using 50 round steel of Φ
Platform pedestal（26）On, four 50 positioning steel tubes of Φ（22）It is welded on revolving platform firm banking（21）On, four positioning pins（23）With
Four positioning steel tubes（22）It is distributed along ladle turret circle spacing 90o；
Remove ladle turntable bearing（20）Inner ring screw jacks four the jacking pedestal of hydraulic cylinder（19）It is placed in two revolutions
Under platform lifting arm, four jacking hydraulic cylinders are linked up with high-pressure hose with control valve platform, four is jacked the position of hydraulic cylinder
Displacement sensor（34）Coupled by electric wire with PLC controller, and be connected into computer together, forms a four cylinder closed-loop synchronizations control
Hydraulic structure, and by computer monitoring, alarm, display；
The jacking pedestal of four jacking hydraulic cylinders（19）Pad levelling, four vertex are four cross of two revolving platform lifting arms
Arm heel starts four jacking hydraulic cylinders, and four jacking hydraulic cylinders keep height consistent, while slowly jacking, by revolving platform top
Play 400mm；
The slippage bracket frame of slippage bracket back leg will be welded（33）The revolving platform firm banking being placed below revolving platform
（21）On, then in slippage bracket frame（33）Front end mounting slip bracket foreleg（27）, while by slippage bracket foreleg
（27）, slippage bracket back leg and revolving platform firm banking（21）It is welded to connect；
Four jacking hydraulic cylinder synchronous are declined, ladle turntable bearing is made（20）Close to slippage bracket frame（33）Plane, tear open
Fall ladle turntable bearing（20）Outer ring screw makes ladle turntable bearing（20）Fall on slippage bracket frame（33）In plane；
It restarts four jacking hydraulic cylinders and jacks ladle turret lifting arm upwards, then with jack by ladle turntable bearing
（20）Slowly along slippage bracket frame（33）Plane pull out, with overhead traveling crane be hung on one side, by new ladle turntable bearing
（20）It is hung to slippage bracket frame（33）It is installed in place afterwards with jack, at this time it should be noted that ladle turntable bearing（20）Internal and external cycle subscript
Note（S）Point will be placed on ladle turret ladle and receive to allow on position and the position of ladle pouring position line vertical direction and jack liquid
The synchronous decline of cylinder pressure, installs ladle turntable bearing（20）Outer ring and turntable bottom plate（18）Between screw and fastening；
It jacks hydraulic cylinder synchronous to rise, removes slippage bracket（28）, allow jacking hydraulic cylinder synchronous to decline, ladle turntable bearing be installed
（20）Inner ring and revolving platform firm banking（21）Between screw, fixed ladle turntable bearing（20）Each position is connected, is connected
Spiral shell inspection will be fastened symmetrically, and each bolt pretightening will reach drawing requirement；
Dress hydraulic slip ring, fluid pressure line, electric wiring, transmission device etc. are returned, refractory brick and outer protection cover restore, then to peace
The equipment installed is debugged, and is delivered production unit after trying successfully and is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720078.9A CN108862091A (en) | 2018-07-03 | 2018-07-03 | A kind of jacking apparatus and method for replacing ladle turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720078.9A CN108862091A (en) | 2018-07-03 | 2018-07-03 | A kind of jacking apparatus and method for replacing ladle turntable bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108862091A true CN108862091A (en) | 2018-11-23 |
Family
ID=64298490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810720078.9A Withdrawn CN108862091A (en) | 2018-07-03 | 2018-07-03 | A kind of jacking apparatus and method for replacing ladle turntable bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108862091A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891966A (en) * | 2020-07-14 | 2020-11-06 | 中铁建工集团有限公司 | Rotary construction passage device between platform-crossing track lines |
| CN113458750A (en) * | 2020-03-30 | 2021-10-01 | 上海梅山钢铁股份有限公司 | Method for replacing rotating bearing of ladle turret |
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| JP2002248560A (en) * | 2001-02-22 | 2002-09-03 | Hitachi Zosen Corp | Bearing exchanging equipment for ladle turlet and method therefor |
| CN201109020Y (en) * | 2007-08-27 | 2008-09-03 | 上海梅山钢铁股份有限公司 | Revolving bearing replacing mechanism for disk bale traverse platform |
| CN203614479U (en) * | 2013-11-08 | 2014-05-28 | 宣化钢铁集团有限责任公司 | Tundish lifting hydraulic device with high synchronization accuracy |
| CN207002071U (en) * | 2017-06-15 | 2018-02-13 | 中海油能源发展股份有限公司 | A kind of jacking apparatus for being used to change bearing at the top of ocean platform general's pillar loop wheel machine |
| CN208995042U (en) * | 2018-07-03 | 2019-06-18 | 宣化钢铁集团有限责任公司 | A kind of jacking apparatus for replacing ladle turntable bearing |
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2018
- 2018-07-03 CN CN201810720078.9A patent/CN108862091A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002248560A (en) * | 2001-02-22 | 2002-09-03 | Hitachi Zosen Corp | Bearing exchanging equipment for ladle turlet and method therefor |
| CN201109020Y (en) * | 2007-08-27 | 2008-09-03 | 上海梅山钢铁股份有限公司 | Revolving bearing replacing mechanism for disk bale traverse platform |
| CN203614479U (en) * | 2013-11-08 | 2014-05-28 | 宣化钢铁集团有限责任公司 | Tundish lifting hydraulic device with high synchronization accuracy |
| CN207002071U (en) * | 2017-06-15 | 2018-02-13 | 中海油能源发展股份有限公司 | A kind of jacking apparatus for being used to change bearing at the top of ocean platform general's pillar loop wheel machine |
| CN208995042U (en) * | 2018-07-03 | 2019-06-18 | 宣化钢铁集团有限责任公司 | A kind of jacking apparatus for replacing ladle turntable bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458750A (en) * | 2020-03-30 | 2021-10-01 | 上海梅山钢铁股份有限公司 | Method for replacing rotating bearing of ladle turret |
| CN111891966A (en) * | 2020-07-14 | 2020-11-06 | 中铁建工集团有限公司 | Rotary construction passage device between platform-crossing track lines |
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Application publication date: 20181123 |