CN214783296U - Integral lifting equipment for special-shaped thin-wall shell structure - Google Patents

Abstract

The utility model discloses a be used for whole lifting means of dysmorphism thin wall shell structure, include the hoisting frame that sets up respectively all around that lies in the decorative structure hole on the arch rib, the whole relative arch rib inboard direction cantilever of hoisting frame stretches out, hydraulic pressure lifting mechanism passes through the fixed setting of leading truck on the hoisting frame, is equipped with hydraulic pressure lifting mechanism on the hoisting frame, hydraulic pressure lifting mechanism's lower hoist is used for linking to each other with the hoisting point that corresponds on the steel construction casing, the steel construction casing is special-shaped thin wall shell structure. Adopt the utility model discloses whole lifting means and method for when promoting special-shaped thin wall steel construction decoration casing, accomplish synchronous promotion, safe and reliable, efficiency of construction improvement.

Description

Integral lifting equipment for special-shaped thin-wall shell structure

Technical Field

The utility model relates to a bridge engineering construction technical field especially relates to a be used for whole lifting means of dysmorphism thin wall shell structure.

Background

At present, the conventional partial shell structure of the steel bridge decoration part adopts a conventional partial high-altitude bulk scheme, a large number of high-altitude scaffolds need to be erected, the high-altitude assembly and welding workload is huge, greater quality and safety risks exist, and the technical and economic indexes of the scheme are poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the not enough of existence to above-mentioned prior art provides a safe and reliable, efficiency of construction improves is used for whole lifting means of dysmorphism thin wall shell structure and method.

The utility model discloses the technical scheme who adopts does: the utility model provides a be used for whole lifting means of dysmorphism thin wall shell structure which characterized in that: including the hoisting frame that sets up respectively around lieing in the decorative structure hole on the arch rib, the inboard direction cantilever of the whole relative arch rib of hoisting frame stretches out, is equipped with hydraulic pressure lifting mechanism on the hoisting frame, hydraulic pressure lifting mechanism passes through the fixed setting of leading truck on the hoisting frame, hydraulic pressure lifting mechanism's lower hoist be used for with correspond with steel structure shell on the hoisting point link to each other, steel structure shell is special-shaped thin wall shell structure.

According to the technical scheme, the lifting frame is a triangular support frame.

According to the technical scheme, the hoisting frame comprises the stand column fixedly arranged at the inner edge of the arch rib, the side supports arranged at included angles are symmetrically arranged at two sides of the stand column, the lower ends of the side supports are connected with the edge of the arch rib, the front side of the stand column is connected with the inclined support, the lower end of the inclined support is connected with the lower end of the stand column, the upper end of the inclined support extends towards the inclined upper side and is connected with the cross beam, the cross beam is connected with the upper end of the stand column, the three form an inverted right triangle, the rear portion of the stand column is further provided with the rear pull rod, the upper end of the rear pull rod is connected with the upper end of the stand column, the lower end of the inclined support is connected with the arch rib, and the hydraulic lifter is arranged on the cross beam.

According to the technical scheme, the hoisting point on the steel structure shell is determined through finite element analysis software.

According to the technical scheme, the steel structure shell is provided with the reinforcing parts at the lifting points.

According to the technical scheme, the lower lifting appliance comprises an anchoring plate and a transverse plate which are oppositely arranged from top to bottom, vertical plates are welded to the front side, the rear side, the left side and the right side of the anchoring plate and the transverse plate respectively, the vertical plates are enclosed to form a box body structure, the vertical plates are fixedly connected to the upper ends of the anchoring plates and are used for being connected with steel strands, and lifting lug plates used for being connected with lifting points of the steel structure shell are welded to the lower end faces of the transverse plates.

According to the technical scheme, four groups of hydraulic lifters are arranged, and the synchronous lifting construction technology of the four groups of hydraulic lifters adopts stroke and displacement sensing monitoring and computer control.

The utility model discloses the beneficial effect who gains does:

the utility model discloses a steel construction (dysmorphism thin wall shell structure) assembles into whole back on ground, through set up hoisting frame (last hoisting point) on the arch rib structure of having installed the completion, disposes corresponding hydraulic pressure lifting mechanism and relevant lifting means on the hoisting frame, treats that the steel construction decorates ground and assembles the completion back, carries out lifting work: the hydraulic lifters are connected with lower lifting points arranged on a lifted structure through special steel strands respectively, the hydraulic lifter cluster gradually lifts the steel structure decoration to a design position through mutually synchronous repeated telescopic cylinder processes, finally, the installed arch rib structure, the transverse supporting rod and the decoration structure lifted in place are connected into a whole, the lifting equipment is unloaded and dismantled, and the decoration structure installation work is completed. Adopt the utility model discloses whole lifting means for when promoting special-shaped thin wall steel construction decoration casing, accomplish synchronous promotion, safe and reliable, efficiency of construction improvement.

Drawings

Fig. 1 is a schematic structural diagram of the integral lifting device for the special-shaped thin-wall shell structure provided by the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the special-shaped thin-walled shell according to an embodiment of the present invention.

Fig. 3 is a front view of a hoisting frame according to an embodiment of the present invention.

Fig. 4 is a view from a-a in fig. 3.

Fig. 5 is a view from the direction B-B of fig. 3.

Fig. 6 is a front view of the lower hanger according to the embodiment of the present invention.

Fig. 7 is a view from a-a in fig. 6.

Fig. 8 is a view from direction B-B of fig. 3.

Fig. 9 is a schematic structural diagram of the reinforcement provided on the special-shaped thin-walled shell according to an embodiment of the present invention.

Fig. 10 is a view from a-a in fig. 9.

Fig. 11 is a view from the direction B-B in fig. 9.

Fig. 12-18 are schematic diagrams of the overall hoisting construction process according to the embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, the lifting frame 10 is arranged on an arch rib 9 and is arranged on the periphery of a hole of a decorative structure, the lifting frame integrally stretches out in a cantilever mode relative to the inner side direction of the arch rib, a hydraulic lifter 2 is arranged on the lifting frame 10, the hydraulic lifter 2 is fixedly arranged on the lifting frame 10 through a guide frame 1, a lower lifting appliance 5 of the hydraulic lifter 2 is used for being connected with a lifting point on a corresponding steel structure shell, the steel structure shell 8 is of a special-shaped thin-wall shell structure, a lifting lug 7 is arranged on the steel structure shell 8, and the lifting lug 7 is connected with the lower lifting appliance 4 through a pin shaft 4 to form an anchoring point 6.

As shown in fig. 3-5, the lifting frame is a supporting frame with a triangular structure, so as to form a stable stressed supporting structure. The arch rib structure is designed according to the longitudinal linear position of an arch rib, and comprises a vertical column 14 fixedly arranged at the inner side edge of the arch rib 9, side supports 16 arranged at included angles with the vertical column 14 are symmetrically arranged at two sides of the vertical column 14, the lower end of each side support 16 is connected with the edge of the arch rib 9, and the vertical column, the side supports and the arch rib form a structure similar to a right triangle; the front side of a column 14 is connected with an inclined strut 13, the lower end of the inclined strut 13 is connected with the lower end of the column 14, the upper end of the inclined strut 13 extends obliquely upwards and is used for being connected with a cross beam 12, the cross beam 12 is connected with the upper end of the column 14, the three parts form an inverted right-angled triangle, a rear pull rod 15 is further arranged behind the column 14, the upper end of the rear pull rod 15 is connected with the upper end of the column 14, the lower end of the rear pull rod is connected with an arch rib, and the hydraulic lifter is arranged on the cross beam.

As shown in fig. 6-8, the lower hanger includes an anchoring plate 19 and a transverse plate 18, which are disposed opposite to each other, and vertical plates 21 are welded to the front, rear, left and right sides of the anchoring plate and the transverse plate, respectively, so as to form a box structure, and the upper and lower ends of the vertical plates extend out towards the two ends of the box structure opposite to the anchoring plate and the transverse plate, respectively. The upper end of the anchoring plate 19 is fixedly connected with a vertical plate 21 connected with the steel strand 3, and the lower end face of the transverse plate 18 is welded with a lug plate 17 connected with a steel structure shell hoisting point. The lower lifting appliance adopts a steel plate welding frame structure, is interchangeable, is stressed clearly, has a simple structure, and accords with the characteristic that the structure has a certain inclination angle, so that the using amount of temporary measures is reduced to the greatest extent, and the change of an original structure body is reduced.

As shown in fig. 2 and 9-11, the steel structure shell 8 is provided with a hanging point D1(11), a hanging point D2(12), a hanging point D3(13) and a hanging point D4(14) according to the oblique rib line-shaped position. And the hoisting point on the steel structure shell is determined by finite element analysis software. A reinforcement 24 is provided before the A-A section garnish top panel 22 and the garnish top panel 23, and a reinforcement 25 is provided before the B-B section garnish top panel 22 and the garnish top panel 23.

The wedge-shaped anchors at the two ends of the hydraulic lifter in the embodiment have a one-way self-locking function. When the anchorage works (is tightened), the steel strand can be automatically locked; when the anchorage device does not work (is loosened), the steel strand is released and can move up and down. The stroke of the hydraulic lifter is 250 mm. When the hydraulic lifter is periodically and repeatedly operated, the lifted heavy object moves forwards step by step.

The hydraulic synchronous lifting construction technology of the embodiment adopts stroke and displacement sensing monitoring and computer control, and can fully automatically realize a plurality of functions such as certain synchronous action, load balancing, posture correction, stress control, operation locking, process display, fault alarm and the like through data feedback and control instruction transmission. The operator can observe the hydraulic lifting process and related data and/or issue control instructions through a man-machine interface of a hydraulic synchronous computer control system in a central control room.

In order to ensure the safety of the structure in the lifting process, a synchronous lifting and unloading in-place control strategy of 'lifting point oil pressure balance, structure attitude adjustment, displacement synchronous control and graded unloading in-place' is adopted according to the arrangement of lifting points. And the control system realizes lifting attitude control and load control of the steel structure according to the control strategy and the specific algorithm. In the lifting process, the following requirements should be met from the perspective of guaranteeing the safety of structure hoisting: ensuring that the loading conditions of all lifting points of the same motor of a pump station are basically uniform; the aerial stability of the lifting structure is ensured, and each lifting point is also required to keep certain synchronism in the lifting process.

The construction method for integrally lifting the special-shaped thin-wall shell structure by using the equipment comprises the following steps:

step 1: as shown in fig. 12, a splicing jig frame 26 is arranged on the bridge floor right below the installation position, and the special-shaped thin-wall shell 8 is spliced into a whole above the splicing jig frame 26;

step 2: installing lifting frames 10 around the corresponding arch rib, and installing a hydraulic lifter 2 on each lifting frame 10;

and step 3: as shown in fig. 13, the steel strand of each hydraulic lifter 2 is correspondingly connected with a hanger at each hanging point on the special-shaped thin-walled shell, the lifting is debugged, and the steel strand 2 of the hydraulic lifting device is pre-tensioned;

and 4, step 4: as shown in fig. 14, the hydraulic lifter is debugged, and after confirming that there is no error, the trial lifting operation is performed, and the step loading is performed: the lifted structure is separated from the ground assembled jig by about 20cm, and the working conditions of the lifted temporary structure and the main arch rib and the operation condition of the hydraulic lifting equipment are comprehensively observed and checked by hovering for 12 h; monitoring whether the distribution of lifting reaction values of all lifting points is consistent with a theoretical value or not through a computer;

and 5: as shown in fig. 15, formal lifting is started on the premise that all links of the whole lifting condition are safe, the elevation of each lifting point (the specific lifting height of each lifting point) is measured every 3 meters during lifting, and if necessary, the adjustment of a single lifting point is carried out to ensure that each lifting point is synchronously and basically lifted;

step 6: as shown in fig. 16, the decoration structure is normally lifted until the decoration structure is lifted to a position close to the design position (a position about 0.5-1 m away from the design), the lifting synchronism of each lifting point is accurately measured, and each lifting point is leveled to ensure the stability of the aerial attitude of the structure;

and 7: as shown in fig. 17, the lifting speed is slowed down, the steel plate is lifted to the designed elevation, the state of the decorative structure is met, and the hydraulic lifter is locked; welding the structure to reach the design state;

and 8: as shown in fig. 18, after the structural welding is completed and reaches the design state, the hydraulic lifter is unloaded, so that the structural load is restored to the design state; and removing lifting equipment such as a hydraulic lifter, lifting supports, a lower lifting appliance and other temporary lifting measures.

Claims (7)

1. The utility model provides a be used for whole lifting means of dysmorphism thin wall shell structure which characterized in that: including the hoisting frame that sets up respectively around lieing in the decorative structure hole on the arch rib, the inboard direction cantilever of the whole relative arch rib of hoisting frame stretches out, is equipped with hydraulic pressure lifting mechanism on the hoisting frame, hydraulic pressure lifting mechanism passes through the fixed setting of leading truck on the hoisting frame, hydraulic pressure lifting mechanism's lower hoist be used for with correspond with steel structure shell on the hoisting point link to each other, steel structure shell is special-shaped thin wall shell structure.

2. The integral lifting device for the special-shaped thin-walled shell structure of claim 1, characterized in that: the lifting frame is a supporting frame with a triangular structure.

3. The integral lifting device for the special-shaped thin-walled shell structure of claim 2, characterized in that: the hoisting frame comprises a stand column fixedly arranged at the inner edge of an arch rib, side supports arranged at included angles with the stand column are symmetrically arranged on two sides of the stand column, the lower end of each side support is connected with the edge of the arch rib, an inclined support is connected to the front side of the stand column, the lower end of the inclined support is connected with the lower end of the stand column, the upper end of the inclined support extends towards the inclined upper side and is used for being connected with a cross beam, the cross beam is connected with the upper end of the stand column, the three form an inverted right-angled triangle, a rear pull rod is further arranged at the rear of the stand column, the upper end of the rear pull rod is connected with the upper end of the stand column, the lower end of the rear pull rod is connected with the arch rib, and the hydraulic lifter is arranged on the cross beam.

4. The integral lifting device for the special-shaped thin-walled shell structure of claim 1 or 2, characterized in that: and the hoisting point on the steel structure shell is determined by finite element analysis software.

5. The integral lifting device for the special-shaped thin-walled shell structure of claim 1 or 2, characterized in that: and reinforcing parts are arranged at each lifting point on the steel structure shell.

6. The integral lifting device for the special-shaped thin-walled shell structure of claim 1 or 2, characterized in that: the lower lifting appliance comprises an anchoring plate and a transverse plate which are oppositely arranged from top to bottom, vertical plates are welded to the front side, the rear side, the left side and the right side of the anchoring plate and the transverse plate respectively, the vertical plates are enclosed to form a box body structure, the vertical plates are fixedly connected to the upper ends of the anchoring plates and used for being connected with steel strands, and lifting lug plates used for being connected with lifting points of the steel structure shell are welded to the lower end faces of the transverse plates.

7. The integral lifting device for the special-shaped thin-walled shell structure of claim 1 or 2, characterized in that: four groups of hydraulic lifters are arranged, and the synchronous lifting construction technology of the four groups of hydraulic lifters adopts stroke and displacement sensing monitoring and computer control.

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