CN205557816U - A hoisting frame for hoist and mount of large -scale truss - Google Patents
A hoisting frame for hoist and mount of large -scale truss Download PDFInfo
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- CN205557816U CN205557816U CN201620077672.7U CN201620077672U CN205557816U CN 205557816 U CN205557816 U CN 205557816U CN 201620077672 U CN201620077672 U CN 201620077672U CN 205557816 U CN205557816 U CN 205557816U
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Abstract
The utility model provides a hoisting frame for hoist and mount of large -scale truss, provides the lifting point of hoist and mount, promotes the truss to the predetermined altitude of major structure, stretches out two pre -buried shaped steel roof beams of major structure including the level, the pre -buried height of two pre -buried shaped steel roof beams and choose length and equal all that a box bracket that is used for fixing the jack is respectively welded to the both sides of its tip roof beam body outward, be connected with antitorque girder steel between two pre -buried shaped steel roof beams, still including supporting at pre -buried shaped steel roof beam outer end and the truss facade bracing of major structure between 2 to and stretch out the back from the major structure and be connected fixed composite steel concrete column connection bracket with truss facade bracing. Antitorque girder steel both ends respectively and two box bracket full penetrations welding between two pre -buried shaped steel roof beams. The utility model relates to a rationally, simple structure, intensity is big, antitorque girder steel helps keeping four hoisting point synchronous lifting during the construction, effectively solved large -scale steel gallery truss hoist and mount in -process because the area is big, from the great and poor problem of equilibrium that bring.
Description
Technical field
This utility model relates to truss Hoisting Construction Technology field, is specifically related to a kind of hoisting frame lifted for large-scale truss.
Background technology
Large-scale truss is widely used in Complex Tall Building system, and its span has several meters long, also has tens meters long.Steel structure material is used to make due to general, deadweight is greatly, at present, large-scale truss is the overall method promoted after typically using installation on ground, but when entirety promotes, owing to truss floor space is big, from great, the entirety of lifting frame body is slightly required high by hoisting process, and owing to span is big, floor space big, typically need to arrange multiple suspension centre and lift by crane simultaneously, hoisting process easily occurring, balance is wayward or the unwarrantable technical barrier of safety, it is difficult to quickly carry out lifting construction.
Utility model content
The purpose of this utility model is to provide a kind of hoisting frame lifted for large-scale truss, solve in prior art owing to Large Steel vestibule truss floor space is big, from great, poor stability, the problem being difficult to lifting construction, effectively solve Large Steel vestibule truss hoisting process easily occurs that balance is wayward, the unwarrantable technical barrier of safety.
For realizing above-mentioned technical purpose, this utility model adopts the following technical scheme that:
A kind of hoisting frame lifted for large-scale truss, the hoist point of lifting is provided, truss is promoted to the predetermined altitude of agent structure, it is characterized in that: include protruding horizontally up two pre-buried section steel beams of agent structure, the pre-buried height of two pre-buried section steel beams and to choose outward length the most equal, the both sides of its end beam body respectively weld one for the box bracket fixing jack；Connect between two pre-buried section steel beams and have antitorque girder steel.
Further, also include the truss facade diagonal brace being supported between pre-buried section steel beam outer end and agent structure, and after agent structure is stretched out, be connected fixing stiffened column connection bracket with truss facade diagonal brace.
Preferably, described antitorque girder steel is box beam, the two ends two box bracket full penetrations respectively and between two pre-buried section steel beams.
The whole height of described hoisting frame can be equal to a story height, and the absolute altitude of pre-buried section steel beam is identical with the floor absolute altitude on upper strata, and the bottom absolute altitude of truss facade diagonal brace is identical with the floor absolute altitude of lower floor.
The whole height of hoisting frame can also be equal to two story heights, and the absolute altitude of pre-buried section steel beam is identical with the floor absolute altitude on upper strata, and the bottom absolute altitude of truss facade diagonal brace is identical with undermost floor absolute altitude.
The end of two pre-buried section steel beams is set to hoist point, totally two hoist points, in distance between two hoist points and large-scale truss, the distance between two suspension centres adapts, and each on two box brackets of beam body both sides at hoist point installs a jack, and two jack are arranged parallel.
For increasing steadiness, the upper surface spot welding of the bottom of described jack and box bracket is fixed.
Compared with prior art, the beneficial effects of the utility model are as follows:
1, antitorque girder steel is set on hoisting frame: the termination of pre-buried section steel beam is set to hoist point, antitorque girder steel is welded between two hoist points, antitorque girder steel uses box beam, the box bracket full penetration that two ends are middle with two pre-buried section steel beams respectively, the setting of antitorque girder steel has been greatly reinforced the strength and stability of hoisting frame；
2, intensity is high: at hoist point, the stiffened column bracket of hoisting frame and section steel beam are high intensity pre-buried structure, spacing measure taked by jack, the upper surface spot welding of the bottom of jack with box bracket is fixed, it is ensured that hoisting frame and the degree of being connected firmly of agent structure and intensity；
To sum up, this utility model is big for Large Steel vestibule truss build, from great, the problem of poor stability, devise special hoisting frame, its intensity is high, reasonable in design, facilitate operating process control, good stability, the lifting construction of large-scale truss is had important directive significance, is particularly well-suited to the lifting lifting of the Large Steel vestibule truss of four suspension centre liftings.
Accompanying drawing explanation
By the detailed description made in conjunction with the following drawings, of the present utility model above-mentioned and/or other aspects and advantage will be apparent from and be easier to understand, and these accompanying drawings the most schematically, are not limiting as this utility model, wherein:
Fig. 1 is the overall structure schematic diagram of the hoisting frame of this utility model embodiment；
Fig. 2 is the hoisting frame connection diagram with agent structure 2 of this utility model embodiment；
Fig. 3 be the hoisting frame of this utility model embodiment after having lifted with the connection diagram of truss 1；
Reference:1-truss, 2-agent structure, the pre-buried section steel beam of 3-, 4-truss facade diagonal brace, 5-stiffened column connect bracket, 6-steel strand wires, the antitorque girder steel of 7-, 8-jack, 9-floor, 10-box bracket.
Detailed description of the invention
One embodiment of the hoisting frame lifted for large-scale truss that this utility model relates to is described with reference to the accompanying drawings.
Such as Fig. 1, this utility model relates to a kind of hoisting frame lifted for large-scale truss, the hoist point of lifting is provided, truss is promoted to the predetermined altitude of agent structure 2, one hoisting frame can be respectively set according to situation agent structure 2 symmetry in both sides, a kind of hoisting frame lifted for large-scale truss, the hoist point of lifting is provided, truss 1 is promoted to the predetermined altitude of agent structure 2, it is characterized in that: include protruding horizontally up two pre-buried section steel beams 3 of agent structure 2, the pre-buried height of two pre-buried section steel beams 3 and to choose outward length the most equal, the both sides of its end beam body respectively weld one for the box bracket 10 fixing jack 8；Connect between two pre-buried section steel beams 3 and have antitorque girder steel 7；Also include the truss facade diagonal brace 4 being supported between pre-buried section steel beam 3 outer end and agent structure 2, and after agent structure 2 is stretched out, be connected fixing stiffened column connection bracket 5 with truss facade diagonal brace 4.Described antitorque girder steel 7 is box beam, the two ends two box bracket 10 full penetrations respectively and between two pre-buried section steel beams 3.
The end of pre-buried section steel beam 3 is set to hoist point, totally two hoist points, and in distance between two hoist points and large-scale truss, the distance between two suspension centres adapts, and fixes jack 8 at hoist point on the box bracket 10 of both sides；Each hoist point fixes two parallel arrangement of jack 8.The bottom of described jack 8 is fixed with the upper surface spot welding of box bracket 10.Steel strand wires 6, from top to down through the beam body of hoisting frame, descending are fixed with anchorage after truss suspension centre；Hydraulic oil pump provides power for jack 8, is used for driving jack 8 to run；Hydraulic control device is for controlling the operation of jack 8.
Height and the shape of bracing frame together decide on situation and the construction stress situation of agent structure in enforcement construction, in the present embodiment, a story height can be equal to, the absolute altitude of its pre-buried section steel beam 3 is identical with floor 9 absolute altitude on upper strata, and the bottom absolute altitude of described truss facade diagonal brace 4 is identical with floor 9 absolute altitude of lower floor；Can also be equal to two story heights, the absolute altitude of described pre-buried section steel beam 3 is identical with floor 9 absolute altitude on upper strata, and the bottom absolute altitude of described truss facade diagonal brace 4 is identical with undermost floor 9 absolute altitude.In the present embodiment, such as Fig. 2, the height of bracing frame is equal to a story height.
This utility model embodiment is according to construction site condition and steel construction integral assembling scheme, select after the integral assembling welding fabrication of Steel corridor ground, once promote construction technology in place, this engineering uses steel vestibule hydraulic pressure entirety to promote, in lifting process, Synchronization Control between each suspension centre requires stricter, the load of each suspension centre to control in the scope basically identical with Theoretical Calculation, in steel construction Integral synchronous lifting process, the displacement of each lifting suspension centre should be monitored in real time, control based on the synchronous shift amount that entirety promotes, monitor force value change at each hoist point simultaneously.Tackling key position point position during construction and strictly monitor the reference simultaneously taking into account force value, it is ensured that during lifting, displacement structure controls accurately, lifting force value meets design requirement simultaneously.Adopt due to Synchronous lifting and computerized control, if promoting asynchronous, beyond design load, promoting and then can be automatically stopped.Comprise the steps:
Step one, calculation on Construction resolve: carry out global design before construction calculating parsing, it is ensured that the safety of work progress；
Step 2, spot plane are arranged: the result resolved according to calculation on Construction, and scene is carried out horizontal layout；
Step 3, the making of truss: the subdivision carrying out steel vestibule truss makes, and forms cell block to be spliced；
Step 4, auxiliary accessory make: be included in steel vestibule truss and submit and carry out interim reinforcement structure setting；
Debug before step 5, the marching into the arena of jack lifting means: debug before jack lifting means is marched into the arena, confirm that it possesses approach conditions；This engineering lifting system, before marching into the arena, must carry out the debugging of software, hardware, then carry out unit, overall on-line debugging in workshop, guarantee being smoothed out of lifting process, anchorage is marched into the arena must be qualified through inspection, and single jack 8 promotes tonnage 250 tons, uses hydraulic jack Integral synchronous lift technique；
Step 6, operation platform are arranged: arrange and erection construction operating platform, and operating platform both sides carry out the installation of safety barrier, and safety barrier uses scaffold tubes to set up, and uses safety net to close, and can go up people on inspection and implement operation after acceptance(check).Welding steel protective measure is increased at hoist point jack periphery；
Step 7, tooling device are marched into the arena: after construction operation platform has been arranged, are marched into the arena by tooling device qualified for quality inspection；
Step 8, the installation on ground of truss: the support jig bottom utilization, be assembled into entirety by unit module；
Step 9, the installation of hoisting frame: before lifting, need lifting bracket is installed, install and carry out in strict accordance with design drawing, be mounted to the most on the body construction to cantilever tripod fix an antitorque girder steel 7 as respectively setting up between hoisting frame, and two cantilever tripod in the first hoisting frame and the second hoisting frame；
Step 10, the installation and debugging of jack lifting means: the lifting devices such as jack 8 are installed on hoist point position, arrange hydraulic oil pump and hydraulic control device simultaneously, jack 8 is with a set of lifting top pressing device, a set of anchoring top pressing device and a set of safety automated tool anchor, various sensor is installed, connection equipment, carries out on-the-spot unloaded debugging；Being provided with two jack at each hoist point and jointly complete work, and be placed at a hoist point by a Pump Control, i.e. 1#, 2# jack, 3#, 4# jack is placed at a hoist point, by 2 hoist points of an oil pump control；5#, 6# jack is placed at a hoist point；7#, 8# jack is placed at a hoist point, an oil pump control control 2 hoist points.Construction needs hydraulic power unit 2, hydraulic jack 8.Being further provided with corresponding master control system 1, point equipment such as control chamber 2 and some sensors, during construction, pumping plant is placed on an existing structure near the place of constructing operation point, will place switch box herein；Often group turn on pump personnel stand on the existing structure at pumping plant place；Often group survey crew to stand on the construction operation platform put up in advance, and i.e. at hoist point, 1 people observes a hoist point；
Step 11, the lashing of steel strand wires 6 and pretension: described steel strand wires 6 are from top to down through antitorque girder steel 7 and hoisting frame beam body, descending fix with anchorage after truss suspension centre, this uses the steel strand wires 6 of Φ 15.2mm1860 level to promote, every jack 8 uses the steel strand wires 6 of 7 Φ 15.2mm1860 levels, blanking goes through steel strand wires 6, must not there is corrosion, dirt, dust etc., guarantee to promote safe and reliable, need the height needed for the height promoted and lifting device to steel strand wires 6 blanking according to truss, should ensure that enough excess length, so that the lashing of steel strand wires；
Step 12, the overall examination of truss 1 promote: step when promoting by examination is carried out, if it find that there is abnormality, stops at once, analyzes reason, proceed after solution；Workmen enters respective post, and all control instructions are all assigned by key station, and it is complete that the time that examination promotes should be all preliminary preparations, and choose the calm fine day morning according to weather forecast, the height that examination promotes is 30cm, and stabilization time is 1 hour, promotes speed 5mm/min.Whole lifting system is checked comprehensively, adopt an effective measure and guarantee each suspension centre every steel strand wires 6 uniform force, part steel strand wires 6 are avoided to be in the lax or less state of stress, as above-mentioned phenomenon occurs, immediately lax or that stress is less steel strand wires 6 should be used the independent stretch-draw of jack, it is at tensioning state, to reach the state of every steel strand wires 6 uniform force；
Step 13, the overall of truss 1 formally promote: examination promotes after inspection is errorless comprehensively and enters lifting process.Step when promoting by examination is carried out, if it find that there is abnormality, stops at once, analyzes reason, proceed after solution.Shut down once for every 2 meters during normal hoisting; check between each point, whether error controls within 50mm; as displacement has big difference then to promoting more a little slower independent fuel feeding; to ensure each point synchronicity; for guaranteeing the synchronization promoted; increase total powerstation at the scene of lifting structure suspension centre displacement difference to be measured, as subsidiary measure；
Step 14, be promoted to design structural elevation: below truss integral lifting to designed elevation 50～150mm place time, stop lifting；
Preparation before step 15, absolute altitude repetition measurement and welding: the overall condition of truss is carried out repetition measurement, mainly include the amount of deflection of truss, the discrepancy in elevation situation of four suspension centres of truss, the drift condition overall simultaneously for truss carries out repetition measurement, formulate corresponding satisfactory after correcting, during this, need top workmen to be uniformly coordinated action with equipment controllers；Equipment controllers adjusts equipment according to workmen's measurement result crawl and then adjusts 4 displacements of truss, is finally reached setting absolute altitude；
Step 10 six, welding fabrication, remove frock: such as Fig. 3, after truss lifting is in place, being closed up with hoisting frame by truss and be connected, close up place's component and installed by tower crane, web high-strength bolt is fixed, on girder steel, lower flange is welded to connect, finally dismounting lifting means and frock, so far, complete whole hoisting process.Rod member on hoisting frame all can regard a part for original steel vestibule as, promotes each end correspondence welding rear in place, forms complete firm vestibule truss structure.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed with further feature combination, and those skilled in the art also can carry out other combination between each technical characteristic according to the purpose of utility model, is as the criterion realizing the purpose of this utility model.
Claims (7)
1. the hoisting frame for the lifting of large-scale truss, the hoist point of lifting is provided, truss (1) is promoted to the predetermined altitude of agent structure (2), it is characterized in that: include protruding horizontally up two pre-buried section steel beams (3) of agent structure (2), the pre-buried height of two pre-buried section steel beams (3) and to choose outward length the most equal, a box bracket (10) being used for fixing jack (8) is respectively welded in the both sides of its end beam body；Connect between two pre-buried section steel beams (3) and have antitorque girder steel (7).
A kind of hoisting frame lifted for large-scale truss the most according to claim 1, it is characterized in that: also include truss facade diagonal brace (4) being supported between pre-buried section steel beam (3) outer end and agent structure (2), and after agent structure (2) is stretched out, be connected fixing stiffened column connection bracket (5) with truss facade diagonal brace (4).
A kind of hoisting frame lifted for large-scale truss the most according to claim 1 and 2, it is characterised in that: described antitorque girder steel (7) is box beam, the two ends two box bracket (10) full penetrations respectively and between two pre-buried section steel beams (3).
A kind of hoisting frame lifted for large-scale truss the most according to claim 3, it is characterized in that: the whole height of described hoisting frame is equal to a story height, the absolute altitude of pre-buried section steel beam (3) is identical with the floor on upper strata (9) absolute altitude, and the bottom absolute altitude of truss facade diagonal brace (4) is identical with the floor of lower floor (9) absolute altitude.
A kind of hoisting frame lifted for large-scale truss the most according to claim 3, it is characterized in that: the whole height of hoisting frame is equal to two story heights, the absolute altitude of pre-buried section steel beam (3) is identical with the floor on upper strata (9) absolute altitude, and the bottom absolute altitude of truss facade diagonal brace (4) is identical with undermost floor (9) absolute altitude.
6. according to a kind of hoisting frame lifted for large-scale truss described in claim 3 any one, it is characterized in that: the end of two pre-buried section steel beams (3) is set to hoist point, totally two hoist points, in distance between two hoist points and large-scale truss, the distance between two suspension centres adapts, upper one jack (8) of each installation of two box brackets (10) of beam body both sides at hoist point, two jack (8) are arranged parallel.
7. according to a kind of hoisting frame lifted for large-scale truss described in any one of claim 4～6, it is characterised in that: the upper surface spot welding of the bottom of described jack (8) and box bracket (10) is fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620077672.7U CN205557816U (en) | 2016-01-27 | 2016-01-27 | A hoisting frame for hoist and mount of large -scale truss |
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| CN201620077672.7U CN205557816U (en) | 2016-01-27 | 2016-01-27 | A hoisting frame for hoist and mount of large -scale truss |
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| CN205557816U true CN205557816U (en) | 2016-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182963A (en) * | 2021-11-10 | 2022-03-15 | 浙江精工钢结构集团有限公司 | Construction method for reverse-order layered lifting of plane-overlapped multi-layer large-span truss structure |
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2016
- 2016-01-27 CN CN201620077672.7U patent/CN205557816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182963A (en) * | 2021-11-10 | 2022-03-15 | 浙江精工钢结构集团有限公司 | Construction method for reverse-order layered lifting of plane-overlapped multi-layer large-span truss structure |
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