CN103086276B - Construction method for hoisting bridge type crane in high-rise well tower type building - Google Patents
Construction method for hoisting bridge type crane in high-rise well tower type building Download PDFInfo
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Abstract
The invention provides a construction method for hoisting a bridge type crane in a high-rise well tower type building and belongs to the field of a mounting technology of the bridge type crane in the high-rise well tower type building. The method comprises the following steps of: rechecking well tower roof beam bearing force; setting hoisting points on a roof beam; determining a winding pulley system and a steel wire rope; arranging the winding pulley system; selecting hoisting points of a box beam and a main trolley; conveying and hoisting main and secondary box beams and an end beam of the bridge type crane into a mounting rail from a well tower gate; assembling a crane bridge rack and moving a bridge rack jigger away from a hoisting hole; and hoisting a trolley and hoisting other parts, so that just a plurality of several steps can be completed to achieve the aim of construction and installation. The construction method disclosed by the invention has the advantages of being more economical and more time-saving when being compared with the conventional method.
Description
Technical field
The invention belongs to crane in bridge type field engineering field in high-rise headframe type building, particularly a kind of construction method that lifts crane in bridge type in high-rise headframe type building.Be particularly useful for the lifting construction project of large bridge crane in the high-rise headframe type of multilayer building.
Background technology
At present, in high-rise headframe type building, the lifting of crane in bridge type is general adopts large-scale crawler crane to lift.First the method must be constructed under headframe roof girder and the inchoate condition of roofing, and after hoisting crane installation, the shutterings-supported construction of follow-up roof girder and roofing has been increased to very large difficulty, also can cause larger impact to the integral construction progress of engineering simultaneously; Secondly the method needs crane in bridge type before roofing construction, just to install, if the supply of material link of crane in bridge type lags behind, will have a strong impact on the construction speed of whole engineering; The construction of the method need to intert in civil engineering structure work progress again, being connected between different majors between operation and operation, can affect the integral construction of engineering progress, will reduce the operating efficiency of civil engineering structure, increase the construction period of civil engineering structure, extend the construction period of whole engineering; Last the method is used large-scale crawler crane to lift, and the turnover field duration of crawler crane is longer, and expense is higher.
Summary of the invention
The object of the present invention is to provide a kind of construction method that lifts crane in bridge type in high-rise headframe type building.Solve the problem that the lifting of crane in bridge type need to adopt large-scale crawler crane to lift in high-rise headframe type building.For the smooth completion of integrated engineering provides time assurance, greatly reduce construction cost.
For solving the problems of the technologies described above, Specific construction step is as follows:
1, checking of headframe roof girder bearing capacity: the load capacity that obtains headframe roofing girder from civil engineering structure mechanics design drawing, the load capacity of the maximum weight of crane in bridge type list hook and headframe roofing girder is contrasted, the load capacity of determining headframe roofing girder is greater than the maximum weight that lifts single hook, illustrate this headframe roofing girder can serve as build lifting point.
2, the setting of lifting point on roof girder: use the roofing girder that crosses hole for hoist center as hoisting beam, lifting point is located at the center of hole for hoist as far as possible, determine on the roof boarding that water behind the position of lifting point is drilled in girder both sides and respectively get two circular holes 1, utilize roofing lifting point wire line hitch 3 to be fixed on and on roof girder, to form roofing lifting point 11 take turns fixed pulley 10 one more through circular hole 1.In order to make roofing lifting point 11 more safe and reliable, on the girder of 11 positions, roofing lifting point, along the direction of roofing girder 5, a H shaped steel floor stringer 2 is set, roofing lifting point wire line hitch 3 is walked around H shaped steel floor stringer 2, disperse by the concentrated load that H shaped steel floor stringer 2 transmits rope, do four safe anchor ears 4 in H shaped steel floor stringer 2 edges and corners with semi-circular thick walled steel tube, roofing lifting point wire line hitch 3 is protected with safe anchor ear 4, in order to avoid the corner angle of lifting H shaped steel floor stringer 2 when weight cut off roofing lifting point wire line hitch 3, make roofing lifting point 11 more safe and reliable.
3, determining of elevator pulley system and steel rope: the heaviest single-piece weight that need to lift according to crane in bridge type is determined use winch 6 and pulley system.Elevator pulley system comprises changed course single-sheaved block 8, takes turns fixed pulley 10 more and take turns movable pulley 12 more, determines that principle is that the nominal payload of elevator pulley system is greater than single hook maximum weight that needs lift; The slider quantity of being returned take single hook maximum weight and the elevator pulley system of crane in bridge type is determined the model of elevator pulley system steel rope 7 as benchmark, calculate by 8 times of safety factors of single elevator pulley system steel rope 7 breaking force, 8 times of breaking force of single elevator pulley system steel rope 7 are greater than elevator pulley system and are assigned to the maximum load capacity of single wire rope.
4, elevator pulley system is set: in dead ahead, headframe gate, a winch 6 is set, elevator pulley system steel rope 7 enters from headframe gate, in headframe, gate right opposite is fixed a changed course single-sheaved block 8 with changed course pulley wire sling 9, the rated load of changed course single-sheaved block should be greater than the maximum load capacity of elevator pulley system steel rope 7, the setting of changed course single-sheaved block 8 departs from the center position of hole for hoist 17, so that the edge of the fast line of elevator pulley system and lifting object and each layer of hole for hoist 17 is all non-interference.The fast line of elevator pulley system is through the many wheels fixed pulley 10 on roofing lifting point 11 and the many wheels movable pulley 12 on slip lifting point 13, many wheel fixed pulleys 10 and many wheel movable pulleys 12 are fixed on the dead end of elevator pulley system steel rope 7 on many wheel fixed pulleys 10 after all wearing full elevator pulley system steel rope 7 by standard again, form elevator pulley system.
5, the selection of case beam 16 and main carriage lifting point: case beam 16 needs the hole for hoist 17 through different floor heights in hoisting process, the cross section of hole for hoist 17 is greater than the end face of case beam 16, and because the length of case beam 16 is greater than the individual layer height of headframe, case beam 16 is in the time of each interlayer operation, all will be simultaneously through two holes for hoist 17, so case beam 16 also has one section at inferior top layer while being lifted into the upper limit position of top layer, time high-rise in order to make case beam 16 can be smoothly can pass smoothly through the hole for hoist 17 of each interlayer and when the top layer, the necessary lean hoisting of case beam 16, and along with the difference of floor height can constantly convert angle of inclination.When lifting rises to top layer, elevator pulley system has arrived end position, but case beam 16 also has one section of hole for hoist 17 that does not leave top layer, now need again the lifting angle of adjusting tank beam 16 to make case beam 16 all hang out top layer hole for hoist 17, finally case beam 16 is lain in a horizontal plane on top layer platform, level is lifted in orbital plane.Case beam 16 constantly changes lifting angle by suspension centre in hoisting process, suspension centre must be set to 2 liftings, some center that is arranged on case beam 16 is middle suspension centre 14, it is top suspension centre 15 that another point is arranged near case beam 16 end faces, the angle of inclination when being carried out control box beam 16 and lifted by these two suspension centres; Because the plane width of square dolly is greater than the width of hole for hoist 17, thus dolly at an angle of 90 vertical lifting after top, adjusted to horizontality, more horizontal hoisted in position.
6, bridging crane main odd-side beam and end carriage are sent into also handling to attachment rail from headframe gate:
Utilize wheel crane that crane parts is sent into headframe gate, on the slip lifting point 13 of elevator pulley system, by fixing, wire line hitch 20 arranges a pars intermedia chain block 18 and a top chain block 19(rated load is more than or equal to lifting weight), top chain block 19 is hung over by top suspension centre wire line hitch 21 on the top suspension centre 15 of case beam 16, the elevator pulley system that hoists steel rope 7 while use wheel crane to send case beam 16 to hanging in headframe, after case beam 16 enters headframe completely, the pars intermedia chain block 18 on slip lifting point 13 is hung over by middle suspension centre wire line hitch 22 on the middle suspension centre 14 of case beam 16, by the angle of pars intermedia chain block 18 and top chain block 19 adjusting tank beams 16, make case beam 16 rise to the top layer of headframe along hole for hoist 17.When case beam 16 rises to top layer, elevator pulley system has arrived end position, but case beam 16 also has one section of hole for hoist 17 that does not leave top layer, now need the angle of inclination of adjusting tank beam 16 again, make case beam 16 all hang out top layer hole for hoist 17, finally case beam 16 is lain in a horizontal plane on top layer platform.Now sling the separately middle suspension centre 14 of case beam 16, is lifted into case beam 16 on attachment rail.Use the same method an other case beam and two butt beams are lifted into installation site.
7, assembling crane crane span structure, and crane span structure jiggering is left to hole for hoist 17:
Major-minor case beam and end carriage are assembled into one after being lifted into installation site, form a crane bridge, adjust diagonal line and the crane span structure wheelspan of crane span structure by code requirement measurement, confirm the errorless rear mode with jiggering by crane span structure dish from hole for hoist, so that the lifting of dolly and installation.
8, the lifting of dolly:
Utilize wheel crane that dolly is sent into headframe gate, cart vertical is lifted into above top layer platform by elevator pulley system, four I-beam sections on uniform spreading on the hole for hoist of top layer platform, then take the I-beam section on hole for hoist as the strong point by 90 ° of dolly upsets, make its horizontal positioned.Again utilize the parallel lifting trolley of elevator assembly pulley to the orbital plane of crossing crane span structure, by crane span structure by jiggering slide into dolly under, slowly fall dolly after rise, the wheel of dolly is located in the orbital plane of crane span structure completely, complete the installation of dolly.
9, the lifting of other each parts:
The lifting of miscellaneous part is as electric component, operator's compartment, gib head etc., and because its volume is little, lightweight, all way routinely is directly lifted into installation site.
The invention has the advantages that: method is simple, do not re-use large-scale crawler crane, reduce construction cost; The decoration stage being arranged on after civil engineering structure all completes of crane in bridge type is carried out, and the installation of structure construction and hoisting crane is non-interference, has simplified working procedure, has saved the engineering time of integrated engineering.
Accompanying drawing explanation
Fig. 1 is that roof girder lifting point arranges figure.Wherein, circular hole 1, H shaped steel floor stringer 2, roofing lifting point wire line hitch 3, safe anchor ear 4, roofing girder 5.
Fig. 2 arranges figure for ± 0.00 meter of elevator pulley system.Wherein, winch 6, elevator pulley system steel rope 7, changed course single-sheaved block 8, changed course pulley wire sling 9.
Fig. 3 is that elevator pulley system arranges elevation drawing.Wherein, winch 6, elevator pulley system steel rope 7, changed course single-sheaved block 8, changed course pulley wire sling 9, takes turns fixed pulley 10 more, and roofing lifting point 11, takes turns movable pulley 12 more, slip lifting point 13.
Fig. 4 is that hole for hoist section and case beam suspension centre arrange figure.Wherein, middle suspension centre 14, top suspension centre 15, case beam 16, hole for hoist 17.
Fig. 5 is case beam lifting schematic diagram.Wherein, take turns movable pulley 12, middle suspension centre 14, top suspension centre 15, case beam 16, pars intermedia chain block 18, top chain block 19, fixing wire line hitch 20, top suspension centre wire line hitch 21, middle suspension centre wire line hitch 22 more.
The specific embodiment
Embodiment 1
A 50t casting crane in bridge type is installed in the headframe that is 73.5m at track level measuring, headframe is divided into seven layers, crane in bridge type is arranged on the track of tower top layer 7,15 meters of ground floor clear height, the second layer to layer 6 clear height is 10 meters, and layer 7 clear height is 13 meters, 65 meters of layer 7 floor absolute altitudes, 73.5 meters of orbital plane absolute altitudes, roofing top mark is high is 78 meters.50t casting crane in bridge type deadweight 41.6t, electric panel room side girder single-piece is the heaviest be 13t, maximum volume for the wide x of long x high=14.1mx3.2mx1.5m, the middle hole for hoist that has a 4.8mx3.5m in the interior each layer of ground of headframe, the long x of dolly is wide=4mx4m.
1, checking of headframe roof girder bearing capacity: needing the heaviest single-piece of lifting is transmission side case beam, and total weight is 13t.Check in the 75.5t that is capable of carrying a load of of headframe roofing girder by civil engineering structure mechanics design drawing, obviously the maximum load capacity 75.5t of roofing girder is greater than the single-piece maximum weight 13t of needs lifting, illustrates that this headframe roof girder can serve as the lifting point of structure.
2, the setting of lifting point on roof girder: use the roofing girder that crosses hole for hoist center as hoisting beam, lifting point is located at the center of hole for hoist as far as possible, determine on the roof boarding that water behind the position of lifting point is drilled in girder both sides and respectively get two circular holes 1, utilize roofing lifting point wire line hitch 3 to be fixed on and on roof girder, to form roofing lifting point 11 take turns fixed pulley 10 one more through circular hole 1.In order to make roofing lifting point 11 more safe and reliable, on the girder of 11 positions, roofing lifting point, along the direction of roofing girder 5, a H shaped steel floor stringer 2 is set, roofing lifting point wire line hitch 3 is walked around H shaped steel floor stringer 2, disperse by the concentrated load that H shaped steel floor stringer 2 transmits rope, do four safe anchor ears 4 in H shaped steel floor stringer 2 edges and corners with semi-circular thick walled steel tube, roofing lifting point wire line hitch 3 is protected with safe anchor ear 4, in order to avoid the corner angle of lifting H shaped steel floor stringer 2 when weight cut off roofing lifting point wire line hitch 3, make roofing lifting point 11 more safe and reliable.
3, determining of elevator pulley system and steel rope: the heaviest single-piece weight that need to lift according to crane in bridge type is that 13t determines 10t winch 6 and the 20t double-wheel pulley system of using.Elevator pulley system comprises 10t changed course single-sheaved block 8, two-wheel fixed pulley 10 and two-wheel movable pulley 12, determines that principle is that the nominal payload 20t of elevator pulley system is greater than single hook maximum weight 13t that needs lift; The maximum load capacity that the double-wheel pulley being returned take single hook maximum weight 13t and the elevator pulley system of crane in bridge type is determined elevator pulley system steel rope 7 as benchmark is as 6.5t, 8 times of safety factors that are 6.5t by the maximum load capacity of elevator pulley system steel rope 7 calculate, the model of learning elevator pulley system steel rope 7 is (6 × 37,1700Mpa), diameter is φ 21.5mm.
4, elevator pulley system is set: in dead ahead, headframe gate, a 10t winch 6 is set, elevator pulley system steel rope 7 enters from headframe gate, in headframe, gate right opposite is fixed a 10t changed course single-sheaved block 8 with changed course pulley wire sling 9, the rated load 10t of 10t changed course single-sheaved block 8 is greater than the maximum load capacity 6.5t of elevator pulley system steel rope 7, meets construction needs.The boundary position that is arranged on ground floor hole for hoist 17 of 10 changed course single-sheaved blocks 8, so that the edge of the fast line of elevator pulley system and lifting object and each layer of hole for hoist 17 is all non-interference.The fast line of elevator pulley system is through the two-wheel fixed pulley 10 on roofing lifting point 11 and the two-wheel movable pulley 12 on slip lifting point 13, two-wheel fixed pulley 10 and two-wheel movable pulley 12 are fixed on the dead end of elevator pulley system steel rope 7 on two-wheel fixed pulley 10 after all wearing full elevator pulley system steel rope 7 by standard again, form elevator pulley system.
5, the selection of case beam 16 and main carriage lifting point: case beam 16 needs the hole for hoist 17 through different floor heights in hoisting process, the sectional area of hole for hoist 17 is 4.8x3.5m
2, headframe is divided into 7 layers, 15 meters of ground floor clear height, and the second layer to layer 6 clear height is 10 meters, and top layer clear height is 13 meters, 73.5 meters of orbital plane absolute altitudes, roofing absolute altitude is 78 meters.14.5 meters of case beam 16 length of crane in bridge type, 3.2 meters of the beam overalls with platform and end carriage interface, high 1.5 meters, heavy 13t; Dolly sectional area is 4x4m
2, heavy 10t.As can be seen from the above data in case beam 16 hoisting processes, the a certain period of the second layer and above each layer, case beam need to be simultaneously through two holes for hoist 17, while rising to layer 7, elevator pulley system has arrived end position, but case beam 16 also has one section at layer 6, so in order to make case beam 16 can be smoothly can pass smoothly layer 6 through ground floor to the hole for hoist 17 of layer 6 and when the layer 7, the necessary lean hoisting of case beam 16, and along with the difference of floor height can constantly convert angle of inclination.Its suspension centre must be set to 2 liftings, and any is arranged on girder center, in the middle of suspension centre 14, another point is arranged on the position apart from girder end face 1m, i.e. top suspension centre 15, the angle of inclination when being carried out control box beam 16 and lifted by these two suspension centres; Because the section width 4m of dolly is greater than the width 3.5m of hole for hoist 17, dolly can not level lifting, and its lifting point should, in car body one side, make dolly vertical lifting at an angle of 90.
6, bridging crane main odd-side beam and end carriage are sent into also handling to attachment rail from headframe gate;
Utilize wheel crane that crane parts is sent into headframe gate, on the slip lifting point 13 of elevator pulley system, by fixing wire line hitch 20, a 15t pars intermedia chain block 18 and a 15t top chain block 19 are set, top chain block 19 is hung over by top suspension centre wire line hitch 21 on the top suspension centre 15 of case beam 16, the elevator pulley system that hoists steel rope 7 while use wheel crane to send case beam 16 to hanging in headframe, after case beam 16 enters headframe completely, the pars intermedia chain block 18 on slip lifting point 13 is hung over by middle suspension centre wire line hitch 22 on the middle suspension centre 14 of case beam 16, by the angle of pars intermedia chain block 18 and top chain block 19 adjusting tank beams 16, make case beam 16 rise to the top layer of headframe along hole for hoist 17.When case beam 16 rises to layer 7, elevator pulley system has arrived end position, but case beam 16 also has 1m not leave the hole for hoist 17 of layer 6, now need the angle of inclination of adjusting tank beam 16 again, make case beam 16 all hang out layer 7 hole for hoist 17, finally case beam 16 is lain in a horizontal plane on layer 7 platform.Now sling the separately middle suspension centre 14 of case beam 16, is lifted into case beam 16 on attachment rail.Use the same method an other case beam and two butt beams are lifted into installation site.
7, assembling crane crane span structure, and crane span structure jiggering is left to hole for hoist 17;
Major-minor case beam and end carriage are assembled into one after being lifted into installation site, form a crane bridge, adjust diagonal line and the crane span structure wheelspan of crane span structure by code requirement measurement, confirm the errorless rear mode with jiggering by crane span structure dish from hole for hoist, so that the lifting of dolly and installation.
8, the lifting of dolly;
Utilize wheel crane that dolly is sent into headframe gate, cart vertical is lifted into above top layer platform by elevator pulley system, four I-beam sections on uniform spreading on the hole for hoist of top layer platform, then take the I-beam section on hole for hoist as the strong point by 90 ° of dolly upsets, make its horizontal positioned.Again utilize the parallel lifting trolley of elevator assembly pulley to the orbital plane of crossing crane span structure, by crane span structure by jiggering slide into dolly under, slowly fall dolly after rise, the wheel of dolly is located in the orbital plane of crane span structure completely, complete the installation of dolly.
9, the lifting of other each parts.
The lifting of miscellaneous part is as electric component, operator's compartment, gib head etc., and because its volume is little, lightweight, all way routinely is directly lifted into installation site.
Claims (3)
1. a construction method that lifts crane in bridge type in high-rise headframe type building, is characterized in that, Specific construction step is as follows:
1) checking of headframe roof girder bearing capacity: the load capacity that obtains headframe roofing girder from civil engineering structure mechanics design drawing, the load capacity of the maximum weight of crane in bridge type list hook and headframe roofing girder is contrasted, the load capacity of determining headframe roofing girder is greater than the maximum weight that lifts single hook, and this headframe roofing girder can be served as the lifting point building;
2) setting of lifting point on roof girder: use the roofing girder that crosses hole for hoist center as hoisting beam, lifting point is located at the center of hole for hoist, determine on the roof boarding that water behind the position of lifting point is drilled in girder both sides and respectively get two circular holes (1), utilize roofing lifting point wire line hitch (3) to be fixed on and on roof girder, to form roofing lifting point (11) take turns fixed pulley (10) one more through circular hole (1); On the girder of position, roofing lifting point (11), along the direction of roofing girder (5), a H shaped steel floor stringer (2) is set, roofing lifting point wire line hitch (3) is walked around H shaped steel floor stringer (2), disperse by the concentrated load that H shaped steel floor stringer (2) transmits rope, do four safe anchor ears (4) in H shaped steel floor stringer (2) edges and corners with semi-circular thick walled steel tube, roofing lifting point wire line hitch (3) is protected with safe anchor ear (4);
3) determining of elevator pulley system and steel rope: elevator pulley system comprises changed course single-sheaved block (8), takes turns fixed pulley (10) and many wheel movable pulleys (12) more, determines that principle is that the nominal payload of elevator pulley system is greater than single hook maximum weight that needs lift; The slider quantity of being returned take single hook maximum weight and the elevator pulley system of crane in bridge type is determined the model of elevator pulley system steel rope (7) as benchmark, calculate by 8 times of safety factors of single elevator pulley system steel rope (7) breaking force, 8 times of breaking force of single elevator pulley system steel rope (7) are greater than elevator pulley system and are assigned to the maximum load capacity of single elevator pulley system steel rope (7);
4) elevator pulley system is set: in dead ahead, headframe gate, a winch (6) is set, elevator pulley system steel rope (7) enters from headframe gate, in headframe, gate right opposite is fixed a changed course single-sheaved block (8) with changed course pulley wire sling (9), the setting of changed course single-sheaved block (8) departs from the center position of hole for hoist (17), the fast line of elevator pulley system is through the many wheels fixed pulley (10) on roofing lifting point (11) and the many wheels movable pulley (12) on slip lifting point (13), many wheel fixed pulleys (10) and many wheel movable pulleys (12) are fixed on the dead end of elevator pulley system steel rope (7) on many wheel fixed pulleys (10) after wearing full elevator pulley system steel rope (7) by standard again, form elevator pulley system,
5) case beam (16) and and the selection of main carriage lifting point: case beam (16) needs the hole for hoist (17) through different floor heights in hoisting process, the cross section of hole for hoist (17) is greater than the end face of case beam (16), because the length of case beam (16) is greater than the individual layer height of headframe, case beam (16) is in the time of each interlayer operation, will be simultaneously through two holes for hoist (17), so case beam (16) is lean hoisting, and along with the difference of floor height converts angle of inclination; When lifting rises to top layer, case beam (16) also has one section of hole for hoist (17) that does not leave top layer, now want the lifting angle of adjusting tank beam (16), case beam (16) is all hung out to top layer hole for hoist (17), finally case beam (16) is lain in a horizontal plane on top layer platform, level is lifted in orbital plane, and case beam (16) constantly changes lifting angle by suspension centre in hoisting process; The plane width of square dolly is greater than the width of hole for hoist (17), and dolly at an angle of 90 vertical lifting is adjusted to horizontality after top, more horizontal hoisted in position;
6) bridging crane main odd-side beam and end carriage are sent into also handling to attachment rail from headframe gate:
Utilize wheel crane that crane parts is sent into headframe gate, the slip lifting point (13) of elevator pulley system above arranges a pars intermedia chain block (18) and a top chain block (19) by fixing wire line hitch (20), top chain block (19) is hung over by top suspension centre wire line hitch (21) on the top suspension centre (15) of case beam (16), the elevator pulley system that hoists steel rope (7) while use wheel crane to send case beam (16) to hanging in headframe, after case beam (16) enters headframe completely, the pars intermedia chain block (18) on slip lifting point (13) is hung over by middle suspension centre wire line hitch (22) on the middle suspension centre (14) of case beam (16), by the angle of pars intermedia chain block (18) and top chain block (19) adjusting tank beam (16), make case beam (16) rise to the top layer of headframe along hole for hoist (17), again case beam (16) is lain in a horizontal plane on platform, sling the separately middle suspension centre (14) of case beam (16), is lifted into case beam (16) on attachment rail, use the same method an other case beam and two butt beams are lifted into installation site,
7) assembling crane crane span structure, and crane span structure jiggering is left to hole for hoist (17):
Major-minor case beam and end carriage are assembled into one after being lifted into installation site, form a crane bridge, measure and adjust diagonal line and the crane span structure wheelspan of crane span structure, confirm the errorless rear mode with jiggering by crane span structure dish from hole for hoist;
8) lifting of dolly:
Utilize wheel crane that dolly is sent into headframe gate, cart vertical is lifted into above top layer platform by elevator pulley system, four I-beam sections on the upper uniform spreading of hole for hoist (17) of top layer platform, take the I-beam section on hole for hoist (17) as the strong point, dolly is overturn 90 ° again, make its horizontal positioned; Utilize the parallel lifting trolley of elevator assembly pulley to the orbital plane of crossing crane span structure, crane span structure by jiggering slide into dolly under, fall after rise dolly, the wheel of dolly is located in the orbital plane of crane span structure completely, complete the installation of dolly;
9) lifting of other each parts:
Electric component, operator's compartment and gib head, be all directly lifted into installation site.
2. method according to claim 1, it is characterized in that, suspension centre described in step 5) be set to 2 liftings, some center that is arranged on case beam (16) is middle suspension centre (14), another point is top suspension centre (15) near being arranged on case beam-ends face.
3. method according to claim 1, is characterized in that, the rated load of the top chain block (19) described in step 6) is more than or equal to lifting weight.
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| CN106006425B (en) * | 2016-07-01 | 2018-10-02 | 广东省工业设备安装有限公司 | A kind of high-rise building ground machine room lower large scale equipment hoisting transportation method |
| CN109626224B (en) * | 2018-11-29 | 2020-11-06 | 上海市基础工程集团有限公司 | Bridge crane mounting, dismounting and construction method in limited space |
| CN112249915A (en) * | 2020-09-27 | 2021-01-22 | 上海宝冶集团有限公司 | Large bridge crane hoisting method for closed occasions of factory buildings |
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