CN113307147A - Gantry crane installation method - Google Patents
Gantry crane installation method Download PDFInfo
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- CN113307147A CN113307147A CN202110695792.9A CN202110695792A CN113307147A CN 113307147 A CN113307147 A CN 113307147A CN 202110695792 A CN202110695792 A CN 202110695792A CN 113307147 A CN113307147 A CN 113307147A
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- leg
- track
- ground anchor
- crane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of building construction, and discloses a gantry crane installation method. In the process of erecting the supporting leg, the gravity of the supporting leg is borne by the main crane and the two auxiliary cranes together, so that the requirement on the hoisting capacity of the main crane is lowered, the supporting leg is integrally hoisted in place at one time, the construction period is shortened, the safety risk is lowered, and the equipment cost is lowered; and the landing leg does not contact with the ground in the process of erecting the landing leg, so that the frictional vibration between the landing leg and the ground is avoided, and the damage to the structural strength of the landing leg in the process of erecting the landing leg is avoided.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a gantry crane installation method.
Background
In the construction of the highway in the mountainous area, due to the influence of the factors of landform and hydrogeological conditions, the proportion of the bridge is large, the sections of the roadbed are few and short, and the sections of the main line roadbed suitable for arranging a beam field are limited; under the conditions of short construction period and large quantity of beam plates, an offline beam field is often required to be arranged for prefabricating the beam plates so as to ensure that the project is completed on schedule. According to the needs of erecting the beam plates in the off-line beam yard, a beam lifting station is required to be arranged at the bridge position near the beam yard so as to solve the problems of lifting, replacing and erecting the beam plates. The girder station generally configures two pier-spanning gantry cranes for spanning the main line bridge floor as hoisting equipment, and the pier-spanning gantry cranes have the characteristics of high height, large span and heavy components, are difficult to install and are particularly of a landing leg structure.
In the prior art, the supporting leg structure of the pier-spanning gantry crane is generally installed by adopting two methods. Firstly, divide the mode of two sections hoists, the landing leg sets up first layer guy rope under the first hoist and mount bottom, and landing leg sets up second layer guy rope on the second hoist and mount top. The mode needs to carry out the assembly operation of upper and lower landing legs at high altitude, and needs to set up two-layer cable wind rope, and the construction process is many, interim material drops into much, and simultaneously, the construction cycle is long, and the landing leg structure is in interim stable state for a long time, and the safety risk is high. Secondly, a mode of integrally hoisting one large-tonnage hoisting equipment in place at one time is utilized. The mode has high requirement on the hoisting capacity of hoisting equipment, the utilization rate of the hoisting equipment is low, and the equipment cost is high.
Therefore, a method for installing a gantry crane is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a gantry crane installation method, which not only realizes one-time integral hoisting of supporting legs in place, shortens the construction period, reduces the safety risk, but also reduces the equipment cost, and the supporting legs do not contact with the ground in the process of erecting the supporting legs, so that the frictional vibration between the supporting legs and the ground is avoided, and the damage to the structural strength of the supporting legs in the process of erecting the supporting legs is avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for installing a gantry crane comprises the following steps:
s1, the main crane and the two auxiliary cranes are erected in place;
s2, the lifting hooks of the main cranes are connected with the tops of the supporting legs, and the lifting hooks of the two auxiliary cranes are respectively connected with the two ends of the bottoms of the supporting legs;
s3, synchronously hooking the main crane and the two auxiliary cranes, and stopping after the whole supporting leg leaves the ground for a certain height;
s4, the main cranes continue to hook to lift the top of the support leg, the two auxiliary cranes rotate the main arms to enable the bottom of the support leg not to contact the ground, and the bottom of the support leg is delivered to the position below the top of the support leg, so that the support leg is changed from a horizontal state to an upright state, and the support leg is lifted;
s5, releasing the connection between the auxiliary crane and the bottom of the supporting leg;
and S6, hoisting the supporting legs in place by the main crane.
Preferably, step S6 includes:
s61, the main crane hoists the supporting leg to the position above the installation position of the supporting leg, and the main crane drops the hook and unloads a certain load, so that the bottom of the supporting leg abuts against the installation position of the supporting leg;
s62, measuring and adjusting the verticality of the supporting leg until the supporting leg meets the design requirement;
and S63, unloading all the loads by the main crane, and finishing the installation of the supporting legs.
Preferably, the number of the legs is two, that is, a first leg and a second leg, before step S1, the first leg is assembled in an area between the installation position of the first leg and the installation position of the second leg, the assembled first leg has a height direction along the transverse bridge direction, the top of the first leg faces the installation position of the first leg, the second leg is assembled outside the installation position of the second leg, and the assembled second leg has a height direction along the forward bridge direction.
Preferably, before step S1, a rail foundation is laid, and a first rail and a second rail are laid on the rail foundation, the first rail and the second rail being arranged in parallel, the first rail being used for mounting the first leg, and the second rail being used for mounting the second leg.
Preferably, when the track foundation is laid, a first ground anchor and a second ground anchor are arranged on the track foundation;
before step S1, laying a first fixed foundation on a side of the first rail away from the second rail, where a third ground anchor is disposed on the first fixed foundation, laying a second fixed foundation on a side of the second rail away from the first rail, and a fourth ground anchor is disposed on the second fixed foundation;
before step S3, connecting a first guy cable and a second guy cable at the top end of the first leg, and connecting a third guy cable and a fourth guy cable at the top end of the second leg;
step S621 is further included between step S62 and step S63: and connecting the bottom end of the first guy rope with the second ground anchor, connecting the bottom end of the second guy rope with the third ground anchor, connecting the bottom end of the third guy rope with the first ground anchor, and connecting the bottom end of the fourth guy rope with the fourth ground anchor.
Preferably, the track basis includes first track basis and second track basis, first track lay in on the first track basis, the second track lay in on the second track basis, first ground anchor set up in first track is close to one side of second track, the second ground anchor set up in the second track is close to one side of first track.
Preferably, in step S621, the first guy cable and the second ground anchor, the second guy cable and the third ground anchor, the third guy cable and the first ground anchor, and the fourth guy cable and the fourth ground anchor are connected by a chain block, and in step S62, the vertical degree of the support leg is adjusted by the chain block.
Preferably, before step S3, the mounting position of the first leg is identified on the first rail and the mounting position of the second leg is identified on the second rail.
Preferably, step S6 is followed by step S7: first landing leg with regional spelling girder subassembly between the second landing leg, the completion of spelling girder subassembly and horizontal bridge all become the contained angle setting to and vertical bridge, just the both ends of girder subassembly are located respectively the both sides of first landing leg.
Preferably, step S7 is followed by step S8: the main beam assembly comprises a first main beam and a second main beam, the main crane is used for hoisting the first main beam to the top end of the landing leg assembly to be far away from one side of the main crane, and then the second main beam is hoisted to the top end of the landing leg assembly to be close to one side of the main crane.
The invention has the beneficial effects that:
according to the method for installing the gantry crane, when the supporting leg is erected, the main crane lifts the top of the supporting leg to lift the top of the supporting leg, the two auxiliary cranes respectively lift the two sides of the bottom of the supporting leg to separate the bottom of the supporting leg from the ground, and the bottom of the supporting leg is delivered to the position below the top of the supporting leg in the lifting process of the top of the supporting leg. In the process of erecting the supporting leg, the gravity of the supporting leg is borne by the main crane and the two auxiliary cranes together, so that the requirement on the hoisting capacity of the main crane is lowered, the supporting leg is integrally hoisted in place at one time, the construction period is shortened, the safety risk is lowered, and the equipment cost is lowered; and the landing leg does not contact with the ground in the process of erecting the landing leg, so that the frictional vibration between the landing leg and the ground is avoided, and the damage to the structural strength of the landing leg in the process of erecting the landing leg is avoided.
Drawings
FIG. 1 is a schematic view of a gantry crane installation site in an embodiment of the invention;
FIG. 2 is a first schematic diagram illustrating a first leg hoisting operation performed according to an embodiment of the present invention;
FIG. 3 is a second schematic diagram illustrating a first leg hoisting operation performed according to an embodiment of the present invention;
fig. 4 is a third schematic view of the first leg hoisting operation performed in the embodiment of the present invention;
fig. 5 is a fourth schematic view of the first leg hoisting operation performed in the embodiment of the present invention;
FIG. 6 is a schematic view of the first leg and the second leg after completion of the lifting operation in the embodiment of the present invention;
FIG. 7 is a schematic view of an embodiment of the present invention after the assembly of the main beam assembly;
fig. 8 is a schematic diagram of the first main beam and the second main beam after the first main beam and the second main beam are hoisted in the embodiment of the invention.
In the figure:
1. a first leg; 2. a second leg; 3. a main beam assembly; 31. a first main beam; 32. a second main beam;
4. a first guy rope; 5. a second guy rope; 6. a third guy rope; 7. a fourth guy rope;
10. a steel bar processing field; 20. flat open ground; 30. a river; 40. national road; 50. a bridge pier;
101. a main crane; 102. An auxiliary crane;
201. a track foundation; 2011. A first track base; 2012. A second track base;
202. a first track; 203. A second track;
204. a first fixed foundation; 205. A second fixed foundation;
206. a first ground anchor; 207. a second ground anchor; 208. a third ground anchor; 209. and a fourth ground anchor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a method for installing a gantry crane, for example, the method is used for installing a mountain highway bridge pier-spanning gantry crane shown in fig. 1, one side of the application range of the gantry crane is a steel bar processing field 10, the other side of the application range of the gantry crane is a flat open space 20, rivers 30 flow through both ends of the gantry crane, one end of the gantry crane is provided with a national road 40 to pass through a highway bridge, the field is very limited, piers 50 are constructed, and the method is a main obstacle and has great limitation on ground assembly and hoisting operation of support legs and main beam components 3.
As shown in fig. 2 to 5, the method for installing a gantry crane provided in this embodiment includes the following steps:
s1, the main crane 101 and the two auxiliary cranes 102 are erected in place;
s2, the lifting hooks of the main crane 101 are connected with the tops of the supporting legs, and the lifting hooks of the two auxiliary cranes 102 are respectively connected with the two ends of the bottoms of the supporting legs;
s3, synchronously hooking the main crane 101 and the two auxiliary cranes 102, and stopping after the whole supporting legs leave the ground for a certain height;
s4, the main crane 101 continues to hook to enable the top of the supporting leg to be lifted, the two auxiliary cranes 102 enable the bottom of the supporting leg not to contact the ground by rotating the main arm, and deliver the bottom of the supporting leg to the position below the top of the supporting leg, so that the supporting leg is changed from a horizontal state to an upright state, and the supporting leg is erected;
s5, the connection between the auxiliary crane 102 and the bottom of the supporting leg is released;
and S6, hoisting the supporting legs in place by the main crane 101.
In the method for installing the gantry crane provided by this embodiment, when the support leg is erected, the main crane 101 lifts the top of the support leg to lift the top of the support leg, the two auxiliary cranes 102 respectively lift the two sides of the bottom of the support leg to separate the bottom of the support leg from the ground, and the bottom of the support leg is delivered to the position below the top of the support leg in the process of lifting the top of the support leg. In the process of erecting the supporting leg, the gravity of the supporting leg is borne by the main crane 101 and the two auxiliary cranes 102 together, so that the requirement on the hoisting capacity of the main crane 101 is lowered, the supporting leg is integrally hoisted in place at one time, the construction period is shortened, the safety risk is reduced, and the equipment cost is lowered; and the landing leg does not contact with the ground in the process of erecting the landing leg, so that the frictional vibration between the landing leg and the ground is avoided, and the damage to the structural strength of the landing leg in the process of erecting the landing leg is avoided.
Specifically, in the present embodiment, the installation position of the gantry crane is disposed at the area adjacent to the flat open ground 20 and between the two rows of piers 50 adjacent to the longitudinal direction to utilize limited site conditions, and the installation position is distant from the national road 40 and the river 30 to reduce the safety risk. The landing leg is provided with two, is first landing leg 1 and second landing leg 2 respectively, when carrying out landing leg hoist and mount operation, carries out the hoist and mount of first landing leg 1 earlier, carries out the hoist and mount of second landing leg 2 again after the hoist and mount of first landing leg 1 are accomplished. The main crane 101 and the auxiliary crane 102 are all truck cranes for convenient movement.
Alternatively, as shown in fig. 2, before step S1, the first leg 1 is assembled in the area between the installation position of the first leg 1 and the installation position of the second leg 2, the assembled first leg 1 has a height direction along the transverse direction, and the top of the first leg 1 faces the installation position of the first leg 1, the second leg 2 is assembled outside the installation position of the second leg 2, and the assembled second leg 2 has a height direction along the bridge direction, so that when the first leg 1 and the second leg 2 are hoisted, the moving distance of the first leg 1 and the second leg 2 is short, and the hoisting is convenient. Specifically, in this embodiment, the assembled first support leg 1 is located in the area between two adjacent rows of piers 50 in the longitudinal direction, and the top end of the first support leg cannot extend into the steel bar processing field 10 adjacent to the working area of the gantry crane, so as to avoid affecting the steel bar processing operation, and the top of the second support leg 2 faces the narrow part of the flat open space 20, so as to fully utilize the space of the flat open space 20.
Optionally, before the assembling operation of the first leg 1 and the second leg 2, the field outside the installation position of the second leg 2 is leveled to ensure the assembling requirement of the second leg 2. Specifically, in the present embodiment, the flat open ground 20 is ground-leveled, and then 50 cm-thick kenyaite slag is laid and compacted.
Alternatively, as shown in fig. 2, in step S1, when the first leg 1 is hoisted, the main crane 101 is erected at a position where the first leg 1 is installed at a position close to the second leg 2 and is installed at a position where the first leg 1 is farther from the pier 50, so as to avoid the pier 50 from affecting the operation of the main crane 101, and the two auxiliary cranes 102 are erected at positions where both sides of the first leg 1 are close to the bottom of the first leg 1 and at a position where the second leg 2 is close to the first leg 1; when the second support leg 2 is hoisted, the main crane 101 is erected on the side of the installation position of the second support leg 2 close to the installation position of the first support leg 1 and close to the top of the second support leg 2, one auxiliary crane 102 is erected on the side of the installation position of the second support leg 2 close to the installation position of the first support leg 1 and close to the bottom of the second support leg 2, and the other auxiliary crane 102 is erected on the side of the bottom of the second support leg 2 far from the installation position of the second support leg 2.
Alternatively, as shown in fig. 5, step S6 includes:
s61, the main crane 101 hoists the supporting leg to the upper side of the installation position of the supporting leg, and the main crane 101 drops the hook and unloads a certain load to enable the bottom of the supporting leg to abut against the installation position of the supporting leg;
s62, measuring and adjusting the perpendicularity of the supporting leg until the design requirements are met;
and S63, unloading all the loads by the main crane 101, and finishing the installation of the supporting legs.
Alternatively, as shown in fig. 6, before step S1, a rail foundation 201 is laid, and a first rail 202 and a second rail 203 are laid on the rail foundation 201, where the first rail 202 and the second rail 203 are arranged in parallel, the first rail 202 is used for installing the first leg 1, and the second rail 203 is used for installing the second leg 2, so as to facilitate the subsequent gantry crane changing operation site. Specifically, in this embodiment, after the site leveling operation, the track foundation 201 is laid, the first track 202 and the second track 203 are respectively disposed on two sides of the bridge, the length direction of the first track is set along the extending direction of the bridge, and after the installation of the gantry crane is completed, the gantry crane can move along the extending direction of the highway through the first track 202 and the second track 203, so that the gantry crane can be moved to a subsequent road section after the lifting operation of the bridge slab of the highway is completed.
Alternatively, as shown in fig. 6, when laying the track foundation 201, the first ground anchor 206 and the second ground anchor 207 are disposed on the track foundation 201, and the first ground anchor 206 and the second ground anchor 207 are disposed by using the track foundation 201. By arranging the first ground anchor 206 and the second ground anchor 207 on the track foundation 201, a fixed foundation specially laid for fixing the first ground anchor 206 and the second ground anchor 207 is avoided, and materials and construction cost are saved, and particularly, in the embodiment, the first ground anchor 206 and the second ground anchor 207 are both anchor rings with the diameter of 20 mm;
before step S1, a first fixed foundation 204 is laid on a side of the first rail 202 away from the second rail 203, a third ground anchor 208 is arranged on the first fixed foundation 204, a second fixed foundation 205 is laid on a side of the second rail 203 away from the first rail 202, and a fourth ground anchor 209 is arranged on the second fixed foundation 205, specifically, in this embodiment, the first fixed foundation 204 and the second fixed foundation 205 are both concrete blocks poured by a three-dimensional pouring process, the third ground anchor 208 and the fourth ground anchor 209 are both anchor rings with a diameter of 20mm, when the first fixed foundation 204 and the second fixed foundation 205 are poured, the third ground anchor 208 and the fourth ground anchor 209 are pre-buried, specifically, in this embodiment, the third ground anchor 208 and the fourth ground anchor 209 are both anchor rings with a diameter of 20 mm;
before step S3, connecting a first guy rope 4 and a second guy rope 5 to the top end of the first leg 1, connecting a third guy rope 6 and a fourth guy rope 7 to the top end of the second leg 2, specifically, in this embodiment, after the first leg 1 and the second leg 2 are assembled, connecting the first guy rope 4 and the second guy rope 5 to the top end of the first leg 1, and connecting the third guy rope 6 and the fourth guy rope 7 to the top end of the second leg 2, specifically, in this embodiment, the first guy rope 4, the second guy rope 5, the third guy rope 6 and the fourth guy rope 7 are all steel wire ropes with a diameter of 10 mm;
step S621 is further included between step S62 and step S63: the bottom end of the first guy rope 4 is connected with the second ground anchor 207, the bottom end of the second guy rope 5 is connected with the third ground anchor 208 to fix the first leg 1, the bottom end of the third guy rope 6 is connected with the first ground anchor 206, and the bottom end of the fourth guy rope 7 is connected with the fourth ground anchor 209 to fix the second leg 2.
Optionally, in step S621, the first guy rope 4 and the second ground anchor 207, the second guy rope 5 and the third ground anchor 208, the third guy rope 6 and the first ground anchor 206, and the fourth guy rope 7 and the fourth ground anchor 209 are connected by a chain block, and in step S62, the verticality of the supporting leg is adjusted by the chain block, so that the adjustment is convenient.
Optionally, the first ground anchor 206, the second ground anchor 207, the third ground anchor 208 and the fourth ground anchor 209 are all provided with a plurality of ground anchors, and are all arranged at intervals along the extending direction of the bridge, and the first guy rope 4 and the second ground anchor 207, the second guy rope 5 and the third ground anchor 208, the third guy rope 6 and the first ground anchor 206, and the fourth guy rope 7 and the fourth ground anchor 209 are all arranged in a one-to-one correspondence manner, so that the stability of the first support leg 1 and the second support leg 2 after installation is improved.
Optionally, as shown in fig. 6, the rail foundation 201 includes a first rail foundation 2011 and a second rail foundation 2012, the first rail 202 is laid on the first rail foundation 2011, the second rail 203 is laid on the second rail foundation 2012, the first ground anchor 206 is disposed on a side of the first rail 202 close to the second rail 203, and the second ground anchor 207 is disposed on a side of the second rail 203 close to the first rail 202, so as to reduce an included angle between the first guy rope 4 and the third guy rope 6 and the ground, so that the first leg 1 and the second leg 2 are fixed more stably, and no interference occurs between the first guy rope 4 and the second rail 203 and between the third guy rope 6 and the first rail 202.
Optionally, before step S3, the installation position of the first leg 1 is identified on the first rail 202, and the installation position of the second leg 2 is identified on the second rail 203, so as to ensure that the subsequent first leg 1 and second leg 2 are installed accurately.
Optionally, as shown in fig. 7, the step S6 is further followed by the step S7: at regional spelling girder subassembly 3 between first landing leg 1 and second landing leg 2, girder subassembly 3 and the horizontal bridge of accomplishing of spelling all become the contained angle setting to and the longitudinal bridge, and the both ends of girder subassembly 3 are located the both sides of first landing leg 1 respectively. Specifically, in this embodiment, the one end of the girder component 3 after the assembly is located the position between first pier and the first landing leg, and the other end is located the position between second pier and the second landing leg to the space between make full use of first pier, second pier, first landing leg 1 and the second landing leg 2 carries out the assembly of girder component 3, avoids first pier, second pier, first landing leg 1 and the second landing leg 2 to influence the assembly operation of girder component 3. Specifically, in the present embodiment, the assembling work of the main beam assembly 3 is performed by the auxiliary crane 102.
Optionally, as shown in fig. 8, the step S7 is further followed by the step S8: the main beam assembly 3 comprises a first main beam 31 and a second main beam 32, the first main beam 31 is firstly hoisted to one side, far away from the main crane 101, of the top end of the landing leg assembly by using the main crane 101, then the second main beam 32 is hoisted to one side, close to the main crane 101, of the top end of the landing leg assembly, and the second main beam 32 is hoisted after the first main beam 31 is hoisted. When the first and second main beams 31 and 32 are hoisted, the main crane 101 stands in the area between the first and second legs 1 and 2 and is close to one end of the second leg 2.
Optionally, the specific process of hoisting the first main beam 31 in step S8 includes: connecting a lifting hook of a main crane 101 with the top of a first main beam 31 through a steel wire rope, tying a traction rope at two ends of the first main beam 31, and adjusting the orientation of the first main beam 31 by using the traction rope in the hoisting process of the first main beam 31 so as to accurately align a main beam assembly 3 with a first supporting leg 1 and a second supporting leg 2; the specific process of hoisting the second main beam 32 includes: the lifting hook of the main crane 101 is connected with the top of the second main beam 32 through a steel wire rope, the two ends of the second main beam 32 are tied with a hauling rope, and the orientation of the second main beam 32 is adjusted by the hauling rope in the hoisting process of the second main beam 32, so that the second main beam 32 is accurately aligned with the first supporting leg 1 and the second supporting leg 2.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A gantry crane installation method is characterized by comprising the following steps:
s1, the main crane (101) and the two auxiliary cranes (102) are erected in place;
s2, the lifting hooks of the main crane (101) are connected with the tops of the supporting legs, and the lifting hooks of the two auxiliary cranes (102) are respectively connected with the two ends of the bottoms of the supporting legs;
s3, the main crane (101) and the two auxiliary cranes (102) synchronously start hooking, and the landing legs are stopped after being integrally separated from the ground by a certain height;
s4, the main crane (101) continues to hook to enable the top of the support leg to be lifted, the two auxiliary cranes (102) enable the bottom of the support leg not to contact the ground by turning a main arm, and deliver the bottom of the support leg to the position below the top of the support leg, so that the support leg is changed from a flat state to an upright state, and the support leg is erected;
s5, releasing the connection between the auxiliary crane (102) and the bottom of the supporting leg;
s6, the main crane (101) hoists the supporting legs to be in place.
2. The gantry crane installation method of claim 1, wherein the step S6 includes:
s61, the main crane (101) hoists the supporting leg to the position above the installation position of the supporting leg, and the main crane (101) drops the hook and unloads a certain load to enable the bottom of the supporting leg to abut against the installation position of the supporting leg;
s62, measuring and adjusting the verticality of the supporting leg until the supporting leg meets the design requirement;
and S63, unloading all the loads by the main crane (101), and finishing the installation of the supporting legs.
3. A gantry crane installing method according to claim 2, wherein there are two legs, namely a first leg (1) and a second leg (2), before step S1, the first leg (1) is assembled in an area between the installation position of the first leg (1) and the installation position of the second leg (2), the assembled first leg (1) is assembled in a height direction along a transverse bridge direction with a top facing the installation position of the first leg (1), the second leg (2) is assembled outside the installation position of the second leg (2), and the assembled second leg (2) is assembled in a height direction along a transverse bridge direction.
4. A gantry crane installation method according to claim 3, wherein, before step S1, a rail foundation (201) is laid, a first rail (202) and a second rail (203) are laid on the rail foundation (201), the first rail (202) and the second rail (203) are arranged in parallel, the first rail (202) is used for installing the first leg (1), and the second rail (203) is used for installing the second leg (2).
5. The gantry crane installation method according to claim 4, wherein when laying the track foundation (201), a first ground anchor (206) and a second ground anchor (207) are arranged on the track foundation (201);
before step S1, laying a first fixed foundation (204) on a side of the first track (202) far away from the second track (203), setting a third ground anchor (208) on the first fixed foundation (204), laying a second fixed foundation (205) on a side of the second track (203) far away from the first track (202), setting a fourth ground anchor (209) on the second fixed foundation (205);
before step S3, connecting a first guy cable (4) and a second guy cable (5) at the top end of the first leg (1), and connecting a third guy cable (6) and a fourth guy cable (7) at the top end of the second leg (2);
step S621 is further included between step S62 and step S63: connecting the bottom end of the first guy rope (4) with the second ground anchor (207), connecting the bottom end of the second guy rope (5) with the third ground anchor (208), connecting the bottom end of the third guy rope (6) with the first ground anchor (206), and connecting the bottom end of the fourth guy rope (7) with the fourth ground anchor (209).
6. A gantry crane installation method according to claim 5, characterized in that the track base (201) comprises a first track base (2011) and a second track base (2012), the first track (202) is laid on the first track base (2011), the second track (203) is laid on the second track base (2012), the first ground anchor (206) is arranged on one side of the first track (202) close to the second track (203), and the second ground anchor (207) is arranged on one side of the second track (203) close to the first track (202).
7. The gantry crane installation method according to claim 5, wherein in step S621, the first guy cable (4) and the second ground anchor (207), the second guy cable (5) and the third ground anchor (208), the third guy cable (6) and the first ground anchor (206), and the fourth guy cable (7) and the fourth ground anchor (209) are connected by chain blocks, and in step S62, the verticality of the leg is adjusted by the chain blocks.
8. Gantry crane installation method according to claim 4, characterized in that before step S3, the installation position of the first leg (1) is identified on the first rail (202) and the installation position of the second leg (2) is identified on the second rail (203).
9. The gantry crane installing method of claim 3, wherein the step S6 is followed by a step S7: first landing leg (1) with regional spelling girder subassembly (3) between second landing leg (2), the completion of spelling girder subassembly (3) and horizontal bridge are to and indulge the bridge and all become the contained angle setting, just the both ends of girder subassembly (3) are located respectively the both sides of first landing leg (1).
10. The gantry crane installing method of claim 9, further comprising step S8 after step S7: girder subassembly (3) include first girder (31) and second girder (32), utilize main loop wheel machine (101) will first girder (31) hoist and mount to the landing leg subassembly top and keep away from one side of main loop wheel machine (101), will again second girder (32) hoist and mount to the landing leg subassembly top and are close to one side of main loop wheel machine (101).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003212478A (en) * | 2002-01-22 | 2003-07-30 | Mitsubishi Heavy Ind Ltd | Crane and method for installing it |
| CN102659027A (en) * | 2012-05-23 | 2012-09-12 | 中铁上海工程局有限公司 | Variable-span transit method for girder-erecting gantry crane |
| CN106904538A (en) * | 2017-04-19 | 2017-06-30 | 郑州国水机械设计研究所有限公司 | A kind of installation method of cucurbit gantry crane |
| CN111139743A (en) * | 2019-12-26 | 2020-05-12 | 中铁十七局集团第三工程有限公司 | Method for improving speed of highway beam frame and installation method of gantry crane |
| CN112854008A (en) * | 2021-03-03 | 2021-05-28 | 浙江交工集团股份有限公司 | Prefabricated bridge pier and beam integrated bridge girder erection machine and construction method thereof |
-
2021
- 2021-06-23 CN CN202110695792.9A patent/CN113307147B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003212478A (en) * | 2002-01-22 | 2003-07-30 | Mitsubishi Heavy Ind Ltd | Crane and method for installing it |
| CN102659027A (en) * | 2012-05-23 | 2012-09-12 | 中铁上海工程局有限公司 | Variable-span transit method for girder-erecting gantry crane |
| CN106904538A (en) * | 2017-04-19 | 2017-06-30 | 郑州国水机械设计研究所有限公司 | A kind of installation method of cucurbit gantry crane |
| CN111139743A (en) * | 2019-12-26 | 2020-05-12 | 中铁十七局集团第三工程有限公司 | Method for improving speed of highway beam frame and installation method of gantry crane |
| CN112854008A (en) * | 2021-03-03 | 2021-05-28 | 浙江交工集团股份有限公司 | Prefabricated bridge pier and beam integrated bridge girder erection machine and construction method thereof |
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