CN100417586C - Integral lifting method of large bridge crane and its appts - Google Patents
Integral lifting method of large bridge crane and its appts Download PDFInfo
- Publication number
- CN100417586C CN100417586C CNB200610073089XA CN200610073089A CN100417586C CN 100417586 C CN100417586 C CN 100417586C CN B200610073089X A CNB200610073089X A CN B200610073089XA CN 200610073089 A CN200610073089 A CN 200610073089A CN 100417586 C CN100417586 C CN 100417586C
- Authority
- CN
- China
- Prior art keywords
- crane
- lifting
- hoisting
- promotes
- derrick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to an integral hoisting method and a device thereof for a large bridge crane, which is an integral system comprehensively utilizing multiple techniques. The present invention mainly comprises a hydraulic synchronous and integral hoisting large bridge crane technique of computer control, a synchronous swing traction technique, a stress strain monitoring control technique by using ANSYS software, and a sensing and monitoring technique which carries out monitoring in the hoisting process. The present invention is characterized in that each component of the bridge crane is assembled into an integral unit on a ground hoisting bracket; a hoisting base seat is manufactured and installed; a hoisting mast system is manufactured and installed; a top cover of a cable wind rope on the top of a hoisting mast is provided with a cable wind system; the corresponding position is provided with a hydraulic synchronous hoisting system; a swing traction system of the bridge crane is installed. The present invention uses a main control computer to control hydraulic synchronous hoisting and ensures the vertical movement and synchronous operation of each hoisting hanging point. The hoisting hanging points stop hoisting when the hoisting hanging points move to preset height in the air. The bridge crane is rotated by the swing traction system to reach a preset rotating position. The bridge crane descends and drops to a final installation position.
Description
Technical field:
The present invention relates to a kind of integral lifting method of large bridge crane and equipment thereof, specifically, the present invention relates to the whole construction method that promotes of a kind of large bridge crane and employed equipment in this construction method.
Background technology:
Crane in bridge type is a kind of crane span structure type hoisting crane that frame moves on aerial conveyor, claims overhead traveling crane again.The crane span structure of crane in bridge type vertically moves along being laid on the track of both sides on overhead, and crane carriage laterally moves along the track that is laid on the crane span structure, constitutes the operating range of a rectangle.Because crane in bridge type can make full use of the space handling material below the crane span structure, be not subjected to the obstruction of wayside equipment, and, also have stable working, advantage such as simple to operate, safe and reliable, locate so be widely used in indoor and outdoor warehouse, factory building, harbour and open-air yard etc.
For large bridge crane, because its complex structure, Heavy Weight, volume are big, the setting accuracy height, characteristics such as the installation site is special, therefore, the difficulty of construction that large bridge crane is installed is big, the construction cost height, and also construction quality, construction speed, construction cost etc. all are difficult for assurance.
For example, be seated in east electric (Guangzhou) the heavy-duty machine Co., Ltd of industry park, development zone Huang Ge town, Nansha, Guangzhou, a 700t crane in bridge type is installed in its heavy complex factories.This crane in bridge type is one of crane in bridge type maximum in present China machinery manufacturing industry machine shop, is made up of crane span structure metal construction, traveling mechanism of the larger traveller, two crane carriages, operator's compartment, repair room etc.Wherein, the crane span structure metal construction is made up of two girders and two butt beams, crane span structure metal construction weight is 200.45t, traveling mechanism of the larger traveller weight is 48.54t, two dolly weight are respectively 111.78t and 100.6t, all assembling later total weight is about 490t, and oad (length) is 34.9m * 12.5m * 6.85m, and its detailed structure can be referring to shown in Figure 1.
For the large-tonnage crane in bridge type, the lifting of hoisting crane lifting is crucial, and hoisting crane assembling and lifting process are all finished in the workshop.Common hanging method is the aerial butt joint of split lifting, in place and fixing, promptly utilize two upright single masts respectively that two main cable and girder temporarily putting to the track girder is good, lift two butt beams then, end with end carriage is connected with a girder simultaneously, respectively two crane carriages are sling again when exceeding the trolley track 300mm left and right sides, two girders and end carriage are drawn close be connected and dolly put in place.Specifically can see for details shown in Figure 2ly, among the figure, 1 is two crane girders; 2 is two crane end carriages; 4 is monkey; 9 is two upright single masts.
But there is following problem in conventional approach: 1. the aerial work time long, such environmental effects is big; 2. it is big to assemble the crane in bridge type difficulty of construction in the air, and quality is not easy to guarantee; 3. long-time continuous aloft work operating efficiency is low, causes industrial accident easily, need take special measures to prevent high falling; 4. use two upright masts simultaneously, cable wind rope is difficult for being provided with and anchoring; 5. be two masts of the special making of this project, cost of manufacture is bigger, and steel are recycled difficulty.
Summary of the invention:
The purpose of this invention is to provide a kind of hanging method, need not use huge loop wheel machine, reduce amount of high-altitude operation, guarantee construction safety, improve the quality, reduce work capacity, save artificial integral lifting method.
One of purpose of the present invention provides a kind of hanging method of saving the suspender materials, and bont can reuse, and engineering cost can reduce, and promoting derrick can repeatedly reuse.
One of purpose of the present invention provides a kind of integral lifting method, in lifting process, realize that by monitor control system each suspension centre promotes synchronously, and the ess-strain in lifting process is monitored in real time to criss-cross arm beam and lifting derrick.
One of purpose of the present invention provide a kind of in integral lifting method of large bridge crane employed equipment.
One of purpose of the present invention provides a kind of rotary system that lifting means and the equipment that is raised can rotate synchronously in integral body promotes and is used for holding crane bridge carries out the whole lifting bracket system that promotes.
Provide a kind of large bridge crane the whole method that promotes according to an aspect of the present invention, it is characterized in that:
The sphere base is placed on the steel row, and the ground under the steel row is through compacting and be paved with rubble;
Assembling promotes mast and hoisted in position, and rotary table bottom bulb is bearing in the sphere base arcuate socket, and rotary table can be swung in either direction, in order to the uneven subsidence of compensation because of ground, makes the lifting mast be in the vertical state all the time;
One pair of doughnut-shaped steel plate is arranged at rotary table top, the lifting derrick of on doughnut-shaped steel plate, placing, criss-cross arm beam and above fixing all parts and the crane in bridge type that is raised, can on this doughnut-shaped steel plate, freely rotate;
The criss-cross arm top center shaft that is rigidly connected, the cable wind rope top cover is enclosed within on the center shaft, and promoting derrick and criss-cross arm center shaft can freely rotate in the hole inter-sync of cable wind rope top cover;
Cable wind system is set, hold the cable wind rope top cover with 8 cable wind ropes, both guaranteed to promote the stability of mast top horizontal direction, make the crane in bridge type that promotes the mast body and be raised again, can rely on following rotary table doughnut-shaped steel plate and top cable wind rope top cover center shaft, rotate freely 360 ° in the horizontal direction synchronously;
Promote derrick and criss-cross arm beam for being rigidly connected, four elevating rams are installed in criss-cross arm cantilever beam end; Steel strand pass subordinate in the oil cylinder and are connected with the anchorage that promotes carriage below reaching, and during hydraulic ram work, will promote carriage by steel strand and mention rising with the crane in bridge type on it;
Be arranged at the desired location as the hydraulic power unit of drive element and the hydraulic control system of employing Hydraulic Synchronizing technology in the hydraulic synchronizing lifting system;
Promote the pre-position that carriage places steel to arrange, before the lifting, crane in bridge type carries out installation on ground on the lifting carriage, form an integral unit;
Crane in bridge type revolution traction system is installed, is realized the requirement to the aerial half-twist of crane in bridge type, this system realizes that by electrical control two winchs of synchronized operation and coaster form;
Sensing and monitoring system is set, below each promotes suspension centre, laser rangefinder is set, measure each position crane bridge hoisting depth at any time; Near the end carriage position theodolite is set along bridging crane main beam is inboard on ground, the horizontal offset of tracking measurement steel strand, in time send the information that monitors to main control computer, passing ratio valve dominant discharge realizes the requirement that lifting synchronously and steel strand keep vertical;
Promoting each main stressed place on derrick and the criss-cross arm beam, stress section is set, wiring is connected with main control computer, and utilizes large-scale finite-element structure analysis program ANSYS software that the ess-strain monitoring information in the lifting process is carried out computational analysis;
Promote synchronously with the main control computer modulated pressure, and guarantee respectively to promote the synchronous vertical shifting of suspension centre;
Stop to promote after rising to predefined first hoisting depth,, and adjust balance operator's compartment, repair room installation in position; Continue then to promote, when rising to predefined second hoisting depth, be that crane large vehicle walking is taken turns when being higher than the shop traveller beam orbit, stop to promote, with hoisting crane together with promoting the synchronous half-twist of derrick, turn to crane large vehicle walking mechanism wheel excircle line of centers and orbit centre on time, slowly crane in bridge type being descended, it is in place to fall back on the track.
Preferable is on the ground with the as a whole unit of each component assembly of hoisting crane, to make the overwhelming majority operate in ground and carry out before the lifting, reduced the high-altitude assembling operation, reduced the insecurity in the construction, assembling operation is more accurate, assembling quality is guaranteed, and construction efficiency improves.
Preferablely be, be the vertical setting owing to promote steel strand, to can not produce horizontal component of force, the crane span structure steel case beam of crane in bridge type just can the occurred level direction not be out of shape yet, thereby need not before lifting, reinforce crane span structure steel case beam, to resist the horizontal component of force that produces in the lifting process crane span structure steel case beam is caused distortion.
Preferablely be, by computer-controlled hydraulic synchronizing lifting system crane in bridge type carried out synchronous lifting from controlling/monitoring and adjustment, this system comprises: as elevating ram cluster, the steel strand of load-supporting part; Hydraulic power unit as drive element; Adopt the proportional valve control flow to realize the hydraulic control system that promotes synchronously; Computing machine as function unit; Be used for monitoring the sensing and monitoring system of horizontal offset and vertical synchronization lifting; Be used for monitoring the ess-strain monitoring system of the ess-strain situation that promotes derrick and criss-cross arm beam.
Preferablely be, owing to adopt sensing and monitoring system, to monitor in real time the load of elevating ram and the crane bridge air position in the lifting process and steel strand horizontal offset, these information that monitor will be transferred to computing machine, determine next step action by main control computer, realize whole lifting process is implemented effectively control.
Preferablely be, because the ess-strain monitoring system is set, to monitor in real time the ess-strain situation that promotes derrick and criss-cross arm beam in the lifting process, and utilize large-scale finite-element structure analysis program ANSYS software that monitoring information is carried out computational analysis, safe and reliable to guarantee whole lifting process.
Preferablely be, realize two winchs of synchronized operation and the lifting derrick draw gear that coaster is formed, at crane lifting during, implement symmetry and draw it is rotate in place promoting derrick to the desired location by electrical control.
Preferable is that the measure of skewness that promotes steel strand in the Bridge Crane process is not more than 5 °.
Provide a kind of large bridge crane the whole equipment that promotes according to a further aspect in the invention, the method for improving described in the one side before this equipment can be realized, and comprise: the sphere base is placed on the big steel row of purpose made, forms firm lifting mast pedestal; After will promoting derrick, rotary table, criss-cross arm beam, the ground assembling of lifting derrick cable wind rope top cover, integral hoisting is in place, stands on the pedestal sphere base, forms single-piece and promotes the mast system; Promoting the lifting mast cable wind system that is provided with on the mast top cable wind rope top cover; Constitute elevating ram cluster, steel strand, hydraulic power unit, hydraulic control system, main control computer, sensing and monitoring system, the ess-strain monitoring system of hydraulic synchronizing lifting system; The crane rotation traction system; Each parts of crane in bridge type are put in carry out installation on ground on it, form an integral unit, and utilize it to carry out the whole lifting carriage that promotes of crane in bridge type.
Preferablely be, wherein, be provided with 1 respectively in 4 cantilever beam ends that promote derrick top criss-cross arm and promote hydraulic jack, so that will overall increase to predetermined altitude, promote hydraulic jack and control by the hydraulic control system of the ratio of employing simultaneous techniques at the good hoisting crane of installation on ground; The oil cylinder model that promotes hydraulic jack can be selected according to the lifting load size, and each oil cylinder that promotes in the suspension centre can in parallelly use, and adopts doublestroke hydraulic lift(ing) cylinder system, makes whole hoisting process be easy to control, and hoisting speed is accelerated.
Preferable is that wherein, the hydraulic lift(ing) cylinder oil inlet adopts hydraulic lock, even circuit interruption, hydraulic actuating cylinder can release yet, and pressurize for a long time, simultaneously, in lifting process, control system adopts logical interlock to the action of upper and lower clamper, guarantees under any circumstance, and elevating ram has at least a cover clamper that steel strand are clamped, assurance is raised the unlikely downslide out of control of equipment, and is safe and reliable.
Preferablely be, by mechanical, electrical, liquid integrated design and application, add the real-time monitoring of field monitoring control system, synchronism and safety that each suspension centre promotes have been improved, guaranteed in the crane lifting process stressed even, reduced the safety problem that causes because of manual operation mistake, commander's human element such as improper, specifically can be referring to shown in Figure 3.
Preferablely be, wherein, realize that hoisting crane and the device that promotes derrick rotation synchronously be made up of two winchs and the coaster of electrical control, guarantee to rotate synchronously.
Preferable is that wherein, sensing and monitoring system comprises: use the horizontal offset of theodolite tracking and monitoring steel strand, and boundary value is set is not more than 5 °; Below promoting suspension centre, laser rangefinder is set, at any time measure the crane bridge hoisting depth, these information that monitor will be transmitted to main control computer, decide the dominant discharge of corresponding proportion valve by main control computer, realize following and promote suspension centre and main order promotes the position synchronous of suspension centre and the requirement that steel strand keep vertical.
Preferablely be, wherein, be provided with the ess-strain monitoring system, ess-strain situation in lifting process is monitored in real time to criss-cross arm beam and lifting derrick, and utilize large-scale finite-element structure analysis program ANSYS software that the information of monitoring is carried out computational analysis, safe and reliable to guarantee whole lifting process.
Description of drawings:
Figure 1 shows that 700t bridge hoisting crane integral structure scheme drawing;
Figure 2 shows that upright single mast split lifting crane in bridge type scheme drawing;
Figure 3 shows that the whole block scheme that promotes synchro control;
Figure 4 shows that the whole lifting scheme scheme drawing of crane in bridge type;
Figure 5 shows that the integral lifting method of large bridge crane flow scheme;
Figure 6 shows that bottom rotary table structural representation;
Figure 7 shows that the whole mast structure scheme drawing that promotes;
Figure 8 shows that winding shaft top of the trellis criss-cross arm girder construction scheme drawing;
Fig. 9 says so to promoting mast cable wind rope cap structure scheme drawing;
Figure 10 shows that the whole carrier structure scheme drawing that promotes.
The specific embodiment:
Figure 1 shows that the 700t crane in bridge type integral structure scheme drawing after the assembly unit.This crane in bridge type is made up of crane span structure metal construction, traveling mechanism of the larger traveller, two crane carriages, operator's compartment, repair room etc.Among Fig. 1,1 is two girders of crane span structure; 2 is crane span structure two butt beams; 3 is cart walking mechanism; 4 and 5 is two monkeies; 6 is driver's cab; 7 are the maintenance chamber; 8 is cart energy disperser and spacing.All assembling later crane in bridge type total weight is about 490t, and oad (length) is 34.9m * 12.5m * 6.85m.
Every monkey is made up of lifting mechanism, wheeling mechanism and trolley frame three parts; Lifting mechanism comprises electrical motor, drg, retarder, reel and assembly pulley; Electrical motor drives reel and rotates by retarder, steel rope is put down, with the lifting weight around coiling or from reel; Trolley frame is the frame of rest and parts such as installation lifting mechanism and wheeling mechanism, is generally welded structure; Wheeling mechanism has four groups of 8 dolly wheels of two rows, and every group has two wheels, by hinged balanced bicycle frame device, as shown in fig. 1, the load of hoisting crane is evenly distributed on each wheel, has 4 adhesion wheels and 4 driven wheels.Two dolly weight are respectively 111.78t and 100.6t.
Traveling mechanism of the larger traveller has eight groups of 24 wheels of two rows, and every group has three wheels, by hinged balanced bicycle frame device, as shown in fig. 1, the load of hoisting crane is evenly distributed on each wheel, has 4 adhesion wheels and 20 driven wheels.Traveling mechanism of the larger traveller weight is 48.54t.
The crane span structure metal construction is made up of two girders and two butt beams.Girder and end carriage are rigidly connected, and the cart wheel is equipped with at the end carriage two ends, move on overhead in order to the supporting crane span structure.Be welded with track on the girder, for the crane carriage operation.Crane span structure metal construction weight is 200.45t.
The structure type of crane span structure girder is a right path box-shaped twin-spar construction, is made up of the vertical web of upper and lower flange plate and both sides, and the dolly rail is arranged on the line of centers of top flange plate.
Crane in bridge type mainly adopts driven by power, generally is to handle in driver's cab, and is convenient for maintenance of equipment in addition, is provided with the maintenance chamber on the opposite of operator's compartment, uses during for hoisting crane maintenance and thread-changing.
Large bridge crane adopts the method for whole hydraulic hoisting and positioning behind the installation on ground, describes the technological process and the concrete operations step of integral lifting method of large bridge crane in detail with reference to Fig. 4:
The technological process of integral lifting method of large bridge crane sees for details shown in Figure 5.
The concrete operations step of integral lifting method of large bridge crane:
The first step: at first carry out ground and handle and lay lifting derrick pedestal, because it is big to promote the mast bearing load, must consider that the differential settlement that promotes the mast gene basis influences it, therefore, determine to promote the mast position and carry out the ground processing, spread rubble and steel row; Make the sphere base of bearing and turning platform then, and the sphere base is placed on the steel row.Specifically can be referring to Fig. 4 and shown in Figure 6, among Fig. 4,1 is two girders of crane span structure; 4 (5) is monkey; 10 is roof girder; 11 is oil jack (4); 12 is steel strand.
Second step: processing and fabricating bottom rotary table, lifting derrick standard knot, criss-cross arm beam, cable wind rope top cover etc. promote the mast members.Specifically can be referring to Fig. 6, Fig. 7, Fig. 8 and shown in Figure 9.
After each structure manufacture is finished, carry out workshop examination assembly unit, guarantee assembly quality; Should guarantee during assembly unit, rotary table is connected (after assembling in place getting well with lifting derrick lower end, tie bolt is dismantled, so that promoting derrick can freely rotate on rotary table), criss-cross arm beam is rigidly connected with lifting derrick upper end, the cable wind rope top cover places on the rigidly connected center shaft in criss-cross arm beam upper end, forms the whole mast that promotes, and promotes derrick and criss-cross arm beam and can rotate freely in the hole inter-sync of cable wind rope top cover by criss-cross arm beam center shaft.Concrete erection method can be referring to shown in Figure 7, and among the figure, 11 is oil jack (4); 17 is rotary table; 19 are ground steel row; 20 for promoting derrick; 23 is the cable wind rope top cover.
The 3rd step: will promote each member of mast and transport the lifting scene to, and utilize wheel crane that rotary table and standard knot lifting derrick, criss-cross arm beam, cable wind rope top component are assembled on ground by designing requirement; The lifting mast integral hoisting that will assemble then is in place, stands on the center, workshop, and the bulb of rotary table bottom is put in the sphere base arcuate socket; The cable wind system that promotes mast is set on the cable wind rope top cover, guarantees to promote mast rotary table bottom bulb after freely rotating on the sphere base, the cable wind rope anchoring is firm.Specifically can be referring to Fig. 4 and shown in Figure 6.
The 4th step: 4 200t oil jacks (elevating ram) are fixed in the end of criss-cross arm cantilever beam, and elevating ram couples together (companys of wearing of steel strand is operated in and carries out after crane in bridge type is assembled) by steel strand and the anchorage that promotes carriage.Specifically can be referring to Fig. 4 and shown in Figure 8, among Fig. 8,11 is oil jack (4); 20 for promoting derrick; 22 is criss-cross arm beam; 23 is the cable wind rope top cover; 24 is jam nut.
The 5th step: the whole carriage that promotes of processing and fabricating hoisting crane transports the scene to, and is positioned over the desired location on the steel row; Two girders of crane in bridge type, two butt beams and cart walking mechanism are transported to the lifting position, and be put in to promote on the carriage and carry out installation on ground; Again two dollies, electric apparatus and other parts are installed on the crane span structure, by adjusting the dolly position, guarantee the crane loading stress balance after, two dollies are reinforced on girder, thereby finish the installation on ground work of crane in bridge type.Specifically can be referring to Fig. 1 and shown in Figure 10.
The 6th step: crane in bridge type revolution traction system is set, realizes the requirement to the aerial half-twist of crane in bridge type, this system realizes that by electrical control two winchs of synchronized operation and coaster form.
The 7th step: sensing and monitoring system is set, wherein, below each promotes suspension centre, laser rangefinder is set, measure each suspension centre position hoisting depth of crane bridge at any time; Near the end carriage position theodolite is set along bridging crane main beam is inboard on ground, the horizontal offset of tracking measurement steel strand, in time send the information that monitors to main control computer, passing ratio valve dominant discharge realizes the requirement that lifting synchronously and steel strand keep vertical.
The 8th step: at criss-cross arm beam top and each main force-summing element place of lifting derrick, stress section is set, wiring is connected with main control computer, realize forming the ess-strain monitoring system with main control computer, guarantee in lifting process, the ess-strain situation of criss-cross arm beam and lifting derrick to be monitored in real time, and utilize large-scale finite-element structure analysis program ANSYS software to carry out computational analysis, realize that whole lifting process is safe and reliable.
The 9th step: hang by examination, guarantee that hoisting crane balance and criss-cross arm are the level of state after, carry out integral body lifting again, hoisting speed should remain in the 10m/h; Stop to promote after rising to certain altitude, with operator's compartment, repair room installation in position; After adjusting balance, continue to promote,, when promptly the crane large vehicle walking wheel is higher than the shop traveller beam orbit, stop to promote when rising to predefined hoisting depth.
The tenth step: utilize crane in bridge type revolution traction system, by implementing the method for symmetry traction to promoting derrick, with hoisting crane together with promoting derrick and the synchronous half-twist of criss-cross arm beam, turn to crane large vehicle walking mechanism wheel excircle line of centers and orbit centre on time, stop operating; Slowly crane in bridge type is descended then and fall back on the track.
The 11 step: remove lifting means.At first will promote carriage and drop to ground, and the steel strand anchorage is thrown off and remove carriage; Take out steel strand then, remove hydraulic lift system; Then crane in bridge type being turned round traction system removes; Utilize wheel crane to hang mast top at last, the cable wind rope anchor system is removed, will promote mast integral body and be put in ground, and the lifting mast that disintegrates, each parts such as dismounting cable wind rope top cover, criss-cross arm beam, lifting derrick standard knot, rotary table.
The 12 step: carry out the test run of idling lotus, minor load test run and D/W test run.
In order to realize whole the lifting, we have designed and produced integral elevator structure and equipment, are specially:
Winding shaft shelf structure form is independent lattice, as shown in Figure 9.Promoting derrick master limb is that the cross section is the square bar of 300mm * 300mm * 15mm, and lacing is the double angle of L100mm * 100mm * 10mm, and standard knot length is 6m, and other has a joint to be 3m.
For realizing the arts demand of transposition behind the assurance crane lifting, we are provided with single-revolution structural system, i.e. rotary table in lifting derrick bottom.Rotary table top is placed in and promotes on the derrick bottom centre axle, the bulb of rotary table bottom drops on the sphere base, when sphere base during because of heavily loaded uneven subsidence, rotary table can be in horizontal surface the certain angle of sphere base deflection relatively, still be in plumbness to guarantee the lifting derrick on the rotary table; The sphere base is placed on the big steel row of purpose made, to enlarge ground-surface bearing surface area; Between rotary table top annular surface of steel plate and lifting derrick base circle steel plate, be provided with thick polytetrafluoroethylene annular plate of a 30mm and the thick corrosion-resistant steel annular plate of 2mm, scribble silicone grease therebetween, to reduce the friction between corrosion-resistant steel annular plate and the polytetrafluoroethylene annular plate, polytetrafluoroethylene annular plate and rotary table top annular steel plate face are fixed together, and corrosion-resistant steel annular plate and lifting derrick bottom centre axle collar shape supporting steel plate face are fixed together; When the hoisting crane transposition, rotary table top surface polytetrafluoroethylene annular plate is motionless substantially, and independently promotes derrick and the rotation of bottom corrosion-resistant steel annular plate thereof mutually with rotary table; The rotation that promotes derrick and crane in bridge type utilizes winch and assembly pulley to drive and realizes.This revolving structure is seen shown in Figure 6, and among the figure, 13 for promoting derrick base circle steel plate; 14 is corrosion-resistant steel annular plate; 15 is polytetrafluoroethylene annular plate; 16 is rotary table top annular steel plate; 17 is rotary table; 18 is the sphere base; 19 are ground steel row; 20 for promoting derrick; 21 is tie bolt.
In 4 cantilever beam ends of criss-cross arm, the oil jack (elevating ram) of a 200t respectively is housed respectively, utilize steel strand that the anchorage on elevating ram and the lifting carriage is coupled together.
For guaranteeing to promote the stability of mast, be provided with a cable wind rope top cover on the criss-cross arm beam top, top that promotes derrick, this top cover is placed on the criss-cross arm back portion center shaft, the center shaft below has an annular boss supporting top cover, use nut locking on the criss-cross arm beam center shaft that stretch out the top cover top, promoting derrick and criss-cross arm beam center shaft can freely rotate in the hole inter-sync of cable wind rope top cover; Utilize 8 cable wind ropes that eight steel columns in top cover and the workshop are firmly strained, the angle of cable wind rope and horizontal surface is less than 10 °, and the structure of concrete top cover and the layout of cable wind rope see Fig. 4 and shown in Figure 9 for details.
The whole for convenience needs that promote, we have designed and produced an integral body and have promoted carriage, are used for holding the crane span structure of hoisting crane, and its concrete structure sees for details shown in Figure 10, and among the figure, 1 is two girders of hoisting crane; 25 for promoting carriage hanger (4); 26 for promoting carriage link stopper (4).
When design promotes carriage and criss-cross arm beam, reasonable safe suspension centre need be set, guarantee on the Bridge Crane carriage suspension centre with promote mast on hoisting point position on the criss-cross arm cantilever beam corresponding mutually, stressed to guarantee balanced carrying of lifting derrick and cable wind system symmetry, and guarantee that strand verticality deviation is no more than 5 °.It is big more to promote the suspension centre spacing, lift by crane steadily more, but the length of criss-cross arm cantilever beam also can increase on the lifting mast, and its structural rigidity will weaken; It is more little to promote the suspension centre spacing, and the intensity that promotes criss-cross arm cantilever beam on the mast is big more, but simultaneously, the lifting stationarity will reduce.Through serious analysis, deeply consideration, finally design desirable lifting carriage and criss-cross arm beam, just no longer describe in detail here.
Computer controlled hydraulic synchronizing lifting system can guarantee that each suspension centre of crane in bridge type promotes synchronously, guarantees the stationarity that promotes.This system is made up of steel strand, elevating ram cluster (load-supporting part), hydraulic power unit (drive element), hydraulic control system, main control computer and sensing and monitoring system, ess-strain monitoring system several sections, specifically can be referring to shown in Figure 3.
Elevating ram and steel strand are load-supporting parts of system, when hoisting crane integral body promotes, the weight of crane in bridge type will be born, should select the model of elevating ram according to the size of lifting weight (lifting load), here the elevating ram of Cai Yonging is 4 200t oil jacks (elevating ram), is the core-theaded type structure; Steel strand adopt high strength low relaxed prestress steel strand, and nominal diameter is 15.24mm, and sectional area is 140mm
2, tensile strength is 1860N/mm, and rupture pull force is 260.7KN, and percentage elongation was at 1% o'clock minimum load 221.5KN.
Hydraulic power unit is the power driven part of elevator system, and its performance and reliability have the greatest impact to the reliability of whole elevator system; In hydraulic control system, adopt the ratio simultaneous techniques, can improve the synchronous coordination performance of total system so effectively.
Whole crane bridge aerial statue information when sensing and monitoring system is mainly used to obtain the accurate location information, load information of elevating ram and lifting, and these information are transferred to main control computer by on-the-spot real-time network, main control computer can determine next step action of elevating ram according to the oil cylinder position information that current network transmits like this, simultaneously, main control computer also can be according to the synchronization regulation amount of lifting load information that transmits and crane bridge attitude information decision total system.
The ess-strain monitoring system is mainly used to the main force part of criss-cross arm beam and promotes the ess-strain of derrick in lifting process monitor in real time, and utilize large-scale finite-element structure analysis program ANSYS software to carry out computational analysis, safe and reliable to guarantee whole lifting process.
Crane in bridge type revolution traction system, be the requirement of the aerial half-twist of crane in bridge type to be provided with for realizing, for guaranteeing that transposition realizes smoothly, the transposition draw gear, the 32t assembly pulley that we adopt two groups of specifications is H32 * 4D reaches can realize that by electrical control two winchs of synchronized operation are symmetrical arranged; Owing to adopt the polytetrafluoroethylene sliding plate to make gliding material, make tractive force reduce greatly, safety has obtained solution.
During each lifting member design, all pass through Calculation and Analysis of Force and strength checking (summary), and all meet the safe stress requirement, just no longer describe in detail here.
Above-listed detailed description is to specify at a possible embodiments of the present invention, only this embodiment is not in order to limit claim of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention is done, for example, equivalence embodiment Deng changing all should be contained in the claim of this case.
Claims (10)
1. the whole method that promotes of a large bridge crane is characterized in that:
The sphere base is placed on the steel row, and the ground under the steel row is through compacting and be paved with rubble;
Assembling promotes mast and hoisted in position, and rotary table bottom bulb is bearing in the sphere base arcuate socket, and rotary table can be swung in either direction, in order to the uneven subsidence of compensation because of ground, makes the lifting mast be in the vertical state all the time;
One pair of doughnut-shaped steel plate is arranged at rotary table top, the lifting derrick of on doughnut-shaped steel plate, placing, criss-cross arm beam and above fixing all parts and the crane in bridge type that is raised, can on this doughnut-shaped steel plate, freely rotate;
The criss-cross arm top center shaft that is rigidly connected, the cable wind rope top cover is enclosed within on the center shaft, and promoting derrick and criss-cross arm center shaft can freely rotate in the hole inter-sync of cable wind rope top cover;
Cable wind system is set, hold the cable wind rope top cover with 8 cable wind ropes, both guaranteed to promote the stability of mast top horizontal direction, make the crane in bridge type that promotes the mast body and be raised again, can rely on following rotary table doughnut-shaped steel plate and top cable wind rope top cover center shaft, rotate freely 360 ° in the horizontal direction synchronously;
Promote derrick and criss-cross arm beam for being rigidly connected, four elevating rams are installed in criss-cross arm cantilever beam end; Steel strand pass subordinate in the oil cylinder and are connected with the anchorage that promotes carriage below reaching, and during hydraulic ram work, will promote carriage by steel strand and mention rising with the crane in bridge type on it;
Be arranged at the desired location as the hydraulic power unit of drive element and the hydraulic control system of employing Hydraulic Synchronizing technology in the hydraulic synchronizing lifting system;
Promote the pre-position that carriage places steel to arrange, before the lifting, crane in bridge type carries out installation on ground on the lifting carriage, form an integral unit;
Crane in bridge type revolution traction system is installed, is realized the requirement to the aerial half-twist of crane in bridge type, this system realizes that by electrical control two winchs of synchronized operation and coaster form;
Sensing and monitoring system is set, below each promotes suspension centre, laser rangefinder is set, measure each position crane bridge hoisting depth at any time; Near the end carriage position theodolite is set along bridging crane main beam is inboard on ground, the horizontal offset of tracking measurement steel strand, in time send the information that monitors to main control computer, passing ratio valve dominant discharge realizes the requirement that lifting synchronously and steel strand keep vertical;
Promoting each main stressed place on derrick and the criss-cross arm beam, stress section is set, wiring is connected with main control computer, and utilizes large-scale finite-element structure analysis program ANSYS software that the ess-strain monitoring information in the lifting process is carried out computational analysis;
Promote synchronously with the main control computer modulated pressure, and guarantee respectively to promote the synchronous vertical shifting of suspension centre;
Stop to promote after rising to predefined first hoisting depth,, and adjust balance operator's compartment, repair room installation in position; Continue then to promote, when rising to predefined second hoisting depth, be that crane large vehicle walking is taken turns when being higher than the shop traveller beam orbit, stop to promote, with hoisting crane together with promoting the synchronous half-twist of derrick, turn to crane large vehicle walking mechanism wheel excircle line of centers and orbit centre on time, slowly crane in bridge type being descended, it is in place to fall back on the track.
2. method according to claim 1, at first with each member of crane in bridge type in the as a whole unit of installation on ground; To be hoisted behind certain altitude, again operator's compartment and repair room are installed on the crane in bridge type, and final lifting revolution puts in place.
3. method according to claim 2 is carried out synchronous lifting from controlling/monitoring and adjustment by computer controlled hydraulic synchronizing lifting system to crane in bridge type, and this system comprises: as elevating ram cluster, the steel strand of load-supporting part; Hydraulic power unit as drive element; Computing machine as function unit; Adopt the proportional valve control flow to realize the hydraulic control system that promotes synchronously; Be used for monitoring the sensing and monitoring system of horizontal offset and vertical synchronization lifting; Be used for monitoring the ess-strain monitoring system of the ess-strain situation that promotes derrick and criss-cross arm beam.
4. according to arbitrary described method among the claim 1,2,3, wherein,, when Bridge Crane arrives predetermined altitude, it is implemented 90 ° rotation traction traction, to reach preposition by the revolution traction system that two winchs and assembly pulley are formed; This revolution traction system is realized two winch synchronized operations by electrical control.
5. according to arbitrary described method among the claim 1,2,3, wherein, the measure of skewness that promotes steel strand in the Bridge Crane process is not more than 5 °.
6. the whole equipment that promotes of a large bridge crane, this equipment can be realized the method for improving described in the claim 1, and comprises: the sphere base is fixed on the big steel row of purpose made, forms firm lifting mast pedestal; After will promoting derrick, rotary table, criss-cross arm beam, the ground assembling of lifting derrick cable wind rope top cover, integral hoisting is in place, stands on the pedestal sphere base, forms single-piece and promotes the mast system; Promoting the lifting mast cable wind system that is provided with on the mast top cable wind rope top cover; Constitute elevating ram cluster, steel strand, hydraulic power unit, hydraulic control system, main control computer, sensing and monitoring system, the ess-strain monitoring system of hydraulic synchronizing lifting system; Hoisting crane rotation traction traction system; Each parts of crane in bridge type are put in carry out installation on ground on it, form an integral unit, and utilize it to carry out the whole lifting carriage that promotes of crane in bridge type.
7. equipment according to claim 6, wherein, for guaranteeing that the crane in bridge type that installation on ground is good overall increases to predetermined altitude, be provided with 1 respectively in 4 cantilever beam ends that promote derrick top criss-cross arm and promote hydraulic jack, promote hydraulic jack and control by the hydraulic control system of the ratio of employing simultaneous techniques; The oil cylinder model that promotes hydraulic jack can be selected according to the lifting load size.
8. equipment according to claim 6, wherein, for realizing the arts demand of transposition behind the assurance crane lifting smoothly, the single-revolution system is set, this rotary system is by forming with the rotary table and the revolution traction system that are placed on the lifting derrick bottom centre axle that promote the derrick relative motion; Be provided with 30mm thick polytetrafluoroethylene annular plate and the thick ring stainless steel plate of 2mm at the rotary table top surface, scribble silicone grease therebetween, to reduce the friction between ring stainless steel plate and polytetrafluoroethylene annular plate, during the hoisting crane transposition, rotary table and polytetrafluoroethylene annular plate are motionless, promote derrick and ring stainless steel plate and rotate.
9. equipment according to claim 6, wherein, sensing and monitoring system comprises the horizontal offset that uses theodolite to follow the tracks of steel strand, and boundary value is set is not more than 5 °; Below promoting suspension centre, laser rangefinder is set, at any time measure the Bridge Crane height, and send main control computer to according to certain control algorithm, and decide the controlling quantity of corresponding proportion valve, realize following lifting suspension centre and the main position synchronous that promotes suspension centre that makes.
10. equipment according to claim 6, wherein, be provided with the ess-strain monitoring system, the ess-strain situation that promotes derrick and criss-cross arm beam in the lifting process is monitored in real time, and adopt large-scale finite-element structure analysis program ANSYS software that the information of monitoring is carried out computational analysis, safe and reliable to guarantee whole lifting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610073089XA CN100417586C (en) | 2006-04-13 | 2006-04-13 | Integral lifting method of large bridge crane and its appts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610073089XA CN100417586C (en) | 2006-04-13 | 2006-04-13 | Integral lifting method of large bridge crane and its appts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1833987A CN1833987A (en) | 2006-09-20 |
| CN100417586C true CN100417586C (en) | 2008-09-10 |
Family
ID=37001915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610073089XA Active CN100417586C (en) | 2006-04-13 | 2006-04-13 | Integral lifting method of large bridge crane and its appts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100417586C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849626A (en) * | 2012-09-24 | 2013-01-02 | 中国建筑第八工程局有限公司 | Indoor non-standard crane installation method |
| CN103318768A (en) * | 2013-01-16 | 2013-09-25 | 上海振华重工(集团)股份有限公司 | Assembling method of quayside with low posture |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2820399B1 (en) * | 2012-02-28 | 2020-01-22 | Smart Applications Limited | Inspection and repair module |
| CN102620712B (en) * | 2012-04-12 | 2013-09-11 | 湖南路桥建设集团公司 | Method and device for realizing synchronization by using laser distance meter |
| CN107498270A (en) * | 2017-09-29 | 2017-12-22 | 南通振华重型装备制造有限公司 | A kind of 1600T masts arm frame root manufacture craft |
| CN111597643B (en) * | 2020-05-28 | 2023-08-04 | 中国水利水电夹江水工机械有限公司 | Modeling analysis method suitable for stress and deformation of crane trolley |
| CN112209221B (en) * | 2020-09-11 | 2022-09-20 | 山西建筑工程集团有限公司 | Hoisting device and hoisting method for projecting structure of high-rise cylindrical building |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU675636A1 (en) * | 1975-06-16 | 1979-07-25 | Ленинградский Ордена Красного Знамени Механический Институт | Device for winding hook-up wires on contact pins |
| JPS59158793A (en) * | 1983-02-28 | 1984-09-08 | 株式会社東芝 | Method of installation of crane in housing |
| SU1390175A1 (en) * | 1985-04-12 | 1988-04-23 | Особое Конструкторско-Технологическое Бюро "Орион" При Новочеркасском Политехническом Институте Им.С.Орджоникидзе | Method of setting end beams of crane bridge |
| JPH0812262A (en) * | 1994-06-27 | 1996-01-16 | Ishikawajima Harima Heavy Ind Co Ltd | Installing method for overhead traveller and its device |
| JP2003054874A (en) * | 2001-08-13 | 2003-02-26 | Maeda Corp | Crane and its installing method |
| CN1609363A (en) * | 2004-08-11 | 2005-04-27 | 中国机械工业建设总公司 | Building truss integral lifting method and equipment thereof |
-
2006
- 2006-04-13 CN CNB200610073089XA patent/CN100417586C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU675636A1 (en) * | 1975-06-16 | 1979-07-25 | Ленинградский Ордена Красного Знамени Механический Институт | Device for winding hook-up wires on contact pins |
| JPS59158793A (en) * | 1983-02-28 | 1984-09-08 | 株式会社東芝 | Method of installation of crane in housing |
| SU1390175A1 (en) * | 1985-04-12 | 1988-04-23 | Особое Конструкторско-Технологическое Бюро "Орион" При Новочеркасском Политехническом Институте Им.С.Орджоникидзе | Method of setting end beams of crane bridge |
| JPH0812262A (en) * | 1994-06-27 | 1996-01-16 | Ishikawajima Harima Heavy Ind Co Ltd | Installing method for overhead traveller and its device |
| JP2003054874A (en) * | 2001-08-13 | 2003-02-26 | Maeda Corp | Crane and its installing method |
| CN1609363A (en) * | 2004-08-11 | 2005-04-27 | 中国机械工业建设总公司 | Building truss integral lifting method and equipment thereof |
Non-Patent Citations (2)
| Title |
|---|
| 用液压同步提升技术安装特大龙门起重机. 郭晓方，乌建中.其中运输机械，第10期. 2001 |
| 用液压同步提升技术安装特大龙门起重机. 郭晓方，乌建中.其中运输机械，第10期. 2001 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849626A (en) * | 2012-09-24 | 2013-01-02 | 中国建筑第八工程局有限公司 | Indoor non-standard crane installation method |
| CN102849626B (en) * | 2012-09-24 | 2014-12-31 | 中国建筑第八工程局有限公司 | Indoor non-standard crane installation method |
| CN103318768A (en) * | 2013-01-16 | 2013-09-25 | 上海振华重工(集团)股份有限公司 | Assembling method of quayside with low posture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1833987A (en) | 2006-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100417586C (en) | Integral lifting method of large bridge crane and its appts | |
| CN102530732B (en) | Hydraulic hoisting, slipping and emplacing method and equipment for large scale press components | |
| CN201228206Y (en) | Self-made small-sized hoisting machine | |
| US11629033B2 (en) | Integral lifting system and lifting method for assembled members | |
| CN101537973B (en) | Method for continuously hoisting rolling mill housings by hydraulic pushing and lifting | |
| CN101434366B (en) | Hoisting tool and hoisting method for column component | |
| CN101476287B (en) | Construction method for carrying large box girder by tire type portal jib crane | |
| CN201660380U (en) | Novel hoisting transportation vehicle | |
| CN212050244U (en) | Gantry crane system for mounting assembled bent cap | |
| CN201825671U (en) | Hoisting trolley for track plate | |
| CN2769241Y (en) | Non-base automatic weight full-automatic tower crane apparatus | |
| CN201458582U (en) | Ladle turret bay transverse movement hoisting tool | |
| CN103086276B (en) | Construction method for hoisting bridge type crane in high-rise well tower type building | |
| CN210288140U (en) | Simple and easy prefabricated decking hoist and mount platform truck | |
| CN114808747A (en) | Multifunctional bridge girder erection machine and bridge girder erection construction method | |
| CN2900454Y (en) | Device for hoisting super large equipment using rotary balance method | |
| CN103132702A (en) | Longspan pipe truss pulling bar lifting and overhead rotating emplacing construction method | |
| CN205500579U (en) | Moving die carrier for lock | |
| CN2923644Y (en) | Superhigh super-large high-tonnage walking derricktype lifting machine | |
| CN202023298U (en) | Roof truss-sectioned roof girder structure capable of being hoisted by cross type tower crane | |
| CN109368519B (en) | Lifting method for emergency diesel generator of nuclear power station | |
| CN202038813U (en) | Simple detachable portal frame | |
| CN104060838A (en) | Grouping and air-pairing installation method for corridor | |
| CN114508052A (en) | Pier-beam assembly type integrated construction method | |
| CN112499482A (en) | Intelligent monitoring high-precision positioning steam drum hoisting device and hoisting method applied by same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |