CN217000178U - Hydraulic jacking device for integrally lifting large steel structure at high altitude - Google Patents

Abstract

The utility model provides a hydraulic jacking device for integrally lifting a large steel structure at high altitude, which comprises a jacking bracket, a box tank upper-layer wallboard and a box tank lower-layer wallboard, wherein the jacking bracket is fixedly connected with the box tank upper-layer wallboard; the wall plate at the upper layer of the tank is connected with the wall plate at the lower layer of the tank through a limiting rib, the bottom of the jacking bracket is connected with the wall plate at the lower layer of the tank through a steel bracket, and one side of the jacking bracket is connected with the wall plate at the upper layer of the tank through a lifting head; the jacking supports are arranged into a polygonal support and are transversely supported and radially supported and fixed by the jacking supports; the radial supports of the jacking supports are provided with a plurality of supports, and each radial support of the jacking support is respectively connected with any two jacking supports on the edge and passes through the center of the polygon. The utility model can not only lift the round tank, but also lift the rectangular steel structure, even lift the irregular flue integrally, and the lifting weight is from dozens of tons to more than one thousand tons at present.

Description

Hydraulic jacking device for integrally lifting large steel structure at high altitude

Technical Field

The utility model relates to a hydraulic jacking device for integrally lifting a large steel structure at high altitude, and belongs to the technical field of hydraulic jacking devices.

Background

With the continuous development of our society, higher requirements on environmental protection are put forward, and each thermal power plant is provided with a desulfurization device. However, with the aging of equipment, the change of coal supply and other reasons, the desulfurization indexes of partial thermal power plants can not meet the national environmental protection requirements, and the construction work of increasing the height of the original desulfurization absorption tower to increase the volume is involved in the reformation of a plurality of power plants on a desulfurization island.

In high altitude, the construction not only needs to solve the safety and quality problems, but also needs to consider the current narrow field situation of the desulfurization island and the practical problem that the reconstruction construction period is generally short.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a hydraulic jacking device for integrally lifting a large-scale steel structure at high altitude.

The utility model is realized by the following technical scheme.

The utility model provides a hydraulic jacking device for integrally lifting a large steel structure at high altitude, which comprises a jacking bracket, a box tank upper-layer wallboard and a box tank lower-layer wallboard, wherein the jacking bracket is fixedly connected with the box tank upper-layer wallboard; the wall plate on the upper layer of the tank is connected with the wall plate on the lower layer of the tank through a limiting rib plate, the bottom of the jacking bracket is connected with the wall plate on the lower layer of the tank through a steel bracket, one side of the jacking bracket is provided with a lifting head, and the lifting head is not in contact with the wall plate on the upper layer of the tank; the jacking supports are arranged into a polygonal support and are transversely supported and radially supported and fixed by the jacking supports; the radial supports of the jacking supports are provided with a plurality of supports, and each radial support of the jacking support is respectively connected with any two jacking supports on the edge and passes through the center of the polygon.

One side of the limiting rib plate is provided with a newly-added tank wall plate.

And an expansion ring is arranged on the lifting head and is connected with the upper wallboard of the box tank.

A plurality of expansion ring reinforcing rib plates are arranged in the expansion ring, and a plurality of force transmission plates are arranged on the outer wall of the expansion ring.

The steel bracket comprises a steel bracket transverse rib plate, and one side of the steel bracket transverse rib plate is connected with a plurality of steel bracket vertical rib plates.

The steel corbels are multiple and are connected through steel corbel circumferential connecting rib plates.

The utility model has the beneficial effects that: the lower part of the absorption tower is specially reinforced, so that the deformation of the tower body is avoided, and the construction quality is well ensured; when the absorption tower is integrally lifted, the upper structure of the tower is not disassembled, so that the use amount of manpower, materials and cranes is greatly reduced, the construction cost is saved, the construction period is shortened, and the problem that a large amount of fields are occupied for understanding construction is solved; the hydraulic lifting is stable and reliable, and the loose-clamp jack has self-locking property and high safety; the overhead operation amount of the disassembly construction is reduced, and the safety risk is reduced; not only can lift a round tank, but also can lift a rectangular steel structure, even the flue with an irregular shape is integrally lifted, and the lifting weight is from dozens of tons to more than one thousand tons at present.

Drawings

FIG. 1 is an elevational view of the present invention;

FIG. 2 is a plan view of the present invention;

FIG. 3 is a first schematic view of the installation of the expander of the present invention;

FIG. 4 is a second schematic view of the installation of the expander of the present invention;

FIG. 5 is a schematic view of the installation of the steel corbel of the present invention;

in the figure: the method comprises the following steps of 1-jacking support, 2-jacking support radial support, 3-jacking support transverse support, 4-steel bracket circumferential connecting rib plate, 5-tank upper-layer wallboard, 6-tank newly-added wallboard, 7-expansion ring, 8-lifting head, 9-steel bracket, 10-tank lower-layer wallboard, 11-force transmission plate, 12-expansion ring reinforcing rib plate, 13-steel bracket vertical rib plate, 14-steel bracket transverse rib plate and 15-limiting rib plate.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

Example 1

The hydraulic jacking device for integrally lifting the large-scale steel structure at high altitude as shown in fig. 1 to 5 comprises a jacking bracket 1, a box tank upper layer wall plate 5 and a box tank lower layer wall plate 10; the tank upper wallboard 5 is connected with the tank lower wallboard 10 through a limiting rib plate 15, the bottom of the jacking support 1 is connected with the tank lower wallboard 10 through a steel corbel 9, a lifting head 8 is arranged on one side of the jacking support 1, and the lifting head 8 is not in contact with the tank upper wallboard 5; the jacking support 1 is provided with a plurality of jacking supports 1, the jacking supports 1 are arranged into polygonal supports and are fixed through jacking support transverse supports 3 and jacking support radial supports 2; the radial supports 2 of the jacking supports are provided with a plurality of radial supports, and each radial support 2 of the jacking support is respectively connected with any two jacking supports 1 on the edge and passes through the center of the polygon.

Example 2

The protocol of example 1 was followed and: one side of the limiting rib plate 15 is provided with a newly added tank wall plate 6.

Example 3

The protocol of example 1 was followed and: and an expansion ring 7 is arranged on the lifting head 8, and the expansion ring 7 is connected with the upper-layer wallboard 5 of the tank.

Example 4

The protocol of example 3 was followed and: a plurality of expansion ring reinforcing rib plates 12 are arranged in the expansion ring 7, and a plurality of force transmission plates 11 are arranged on the outer wall of the expansion ring 7.

Example 5

The protocol of example 1 was followed and: the steel bracket 9 comprises a horizontal rib plate 14 of the steel bracket, and one side of the horizontal rib plate 14 of the steel bracket is connected with a plurality of vertical rib plates 13 of the steel bracket.

Example 6

The protocol of example 1 was followed and: the steel corbels 9 are multiple, and the steel corbels 9 are connected through steel corbel annular connecting rib plates 4.

Example 7

Based on the above embodiment, specifically: the jacking support 1 is provided with a radial jacking support 2, the jacking support 1 is also provided with a transverse jacking support 3, the jacking support 1 is arranged on a steel corbel 9, the steel corbel 9 is arranged on a lower-layer wall plate 10 of the tank, the upper surface of a transverse rib plate 14 of the steel corbel 9 is 200mm away from a cutting line, in order to prevent the lower-layer wall plate 10 of the tank from deforming after stress, a circumferential connecting rib plate 4 is additionally arranged between the two steel corbels 9, the circumferential rib plate 4 and the lower-layer wall plate 10 of the tank are welded by adopting pattern welding, the mounting position of the jacking support 1 needs to consider that a lifting head 8 does not touch an upper-layer wall plate 5 of the tank, an expansion ring 7 is arranged 300mm above the cutting line, the contact position of the expansion ring 7 and the lifting head 8 is a stress position, an expansion ring reinforcing rib plate 12 is arranged on the inner side of the expansion ring 7, and force transfer plates 11 are arranged on two sides of the expansion ring 7 simultaneously, so that the stress of the jacking support 1 passes through the lifting head 8, The force transfer plate 11 is transferred to the upper wall plate 5 of the tank, the expansion ring reinforcing rib plate 12 ensures that the expansion ring 7 at the stress point of the expansion ring is not deformed, the expansion ring 7 ensures that the upper wall plate 5 of the tank is not deformed after being stressed, the action is the same as that of the annular rib plate 4, and the limiting rib plate 15 is arranged outside the cutting line and used for supporting the newly-added wall plate 6 of the tank.

The operation process is as follows: after the jacking device is installed, connecting hydraulic oil pipelines to enable the jack to be in a loose-clamp state, performing a whole-process test for 2-3 times (without pressurization), then performing a rated oil pressure test, observing whether each oil pipeline system has abnormal phenomena such as leakage and the like, and simultaneously checking whether a hydraulic control cabinet works normally; and then carrying out an idle test, checking whether the reciprocating motion of the jack, the stepping action of the lifting rod and the clamping performance of the upper clamping head and the lower clamping head are reliable, starting a pump station to enable the hydraulic jack to be stressed to about 30% of the calculated weight, cutting and separating the original wall plate of the tank by adopting a skip cutting mode along the position of a cutting line, pressing an ascending button by using a central control panel after all the wall plates are cut, completing one-step lifting, resetting a jack piston by pressing a descending button, and then repeatedly lifting to complete the lifting process.

Specifically, checking whether the axial lifting is consistent once every 200mm of lifting, if not, closing inlet valves of other jacks, independently lifting the jacks at local lower positions, adjusting the jacks to the same height, and then continuing lifting until the jacks are lifted to a height slightly higher than each layer of wall plate by 3mm-4mm, and then stopping a pump station; the newly added wall plate 6 of the tank is hung and vertically placed on the external limiting rib plate 15 by a crane, and is moved to a typesetting and mounting position by a chain block, and the tank is assembled by a conventional method; after the newly-added wall plate 6 of the tank is welded, the lifting head 8 is loosened, at the moment, the weight of the upper tank and the lower tank is transmitted to the lower expansion ring 7 through the newly-added wall plate 6, the above work can be repeatedly carried out, and the jacking installation of the wall plate of the lower tank is completed.

The device integrates all the structures, pipelines and the like on the upper part of the absorption tower, an expansion ring is arranged for lifting, a steel bracket support is arranged in a tower body on the lower part and used for placing a jack, and a reinforcing ring is arranged on the inner wall of the tower on the lower part to control the forced deformation; the jacks are controlled by the central pump station, and stepping lifting is adopted, so that the lifting is safe, reliable and stable, the construction quality can be ensured, and the construction period is shortened; the method avoids dismantling and restoring work, reduces the damage to scale corrosion resistance, reduces overhead operation, has the characteristics of low investment and simple and convenient operation, saves the investment of human, machine and material costs, improves the production efficiency, and has higher economy and practicability.

In conclusion, the device can avoid the use of a large crane and a large amount of dismantling and recovering work amount, saves the cost of the large crane, improves the production efficiency, enables the operation layer to be always positioned at the position of the erection platform, reduces the labor intensity, improves the safety, and has the advantages of low investment, simple and convenient operation and reduction of high-altitude operation amount.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a hydraulic pressure jacking device for high altitude whole lift large steel construction, includes jacking support (1), case jar upper wallboard (5), case jar lower floor's wallboard (10), its characterized in that: the tank upper-layer wallboard (5) is connected with the tank lower-layer wallboard (10) through a limiting rib plate (15), the bottom of the jacking support (1) is connected with the tank lower-layer wallboard (10) through a steel corbel (9), a lifting head (8) is arranged on one side of the jacking support (1), and the lifting head (8) is not in contact with the tank upper-layer wallboard (5); the jacking supports (1) are arranged in a polygonal manner and are fixed through the transverse supports (3) of the jacking supports and the radial supports (2) of the jacking supports; the jacking supports (3) are sleeved on the jacking supports (1); the radial supports (2) of the jacking supports are provided with a plurality of, and each radial support (2) of the jacking support is respectively connected with any two jacking supports (1) on the edge and passes through the center of a polygon.

2. The hydraulic jacking device for integrally lifting the large-sized steel structure at high altitude as claimed in claim 1, wherein: one side of the limiting rib plate (15) is provided with a newly-added box tank wall plate (6).

3. The hydraulic jacking device for integrally lifting the large-sized steel structure at high altitude as claimed in claim 1, wherein: an expansion ring (7) is arranged on the lifting head (8), and the expansion ring (7) is connected with the upper wall plate (5) of the box tank.

4. The hydraulic jacking device for integrally lifting the large-sized steel structure at high altitude as claimed in claim 3, wherein: a plurality of expansion ring reinforcing rib plates (12) are arranged in the expansion ring (7), and a plurality of force transmission plates (11) are arranged on the outer wall of the expansion ring (7).

5. The hydraulic jacking device for integrally lifting the large-sized steel structure at high altitude as claimed in claim 1, wherein: the steel bracket (9) comprises a steel bracket transverse rib plate (14), and one side of the steel bracket transverse rib plate (14) is connected with a plurality of steel bracket vertical rib plates (13).

6. The hydraulic jacking device for integrally lifting the large-sized steel structure at high altitude as claimed in claim 1, wherein: the steel corbels (9) are multiple, and the steel corbels (9) are connected through steel corbel annular connecting rib plates (4).

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