JPH1162017A - Load balancing device in lifting device for structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in a conventional lifting device for a structure requiring a height adjusting plate to be inserted between each supporter and a beam bracket for equalizing load on the right and left supporters to support a preceding structure, which is extremely troublesome, and in which it is difficult to accurately insert the plate. SOLUTION: In a load uniformizing device, right and left supporters 7 of a column frame to support a preceding structure are respectively supported by right and left beam brackets 3 of a newly provided column 8 through hydraulic jacks 9, and equal hydraulic pressure or different hydraulic pressure to incline the newly provided column 8 is applied to the respective hydraulic jacks 9. The hydraulic jack 9 is provided with a mechanical stroke lock means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load equalizing device for a structure elevating device, and more particularly to a load equalizing device for a structure elevating device used when constructing a high-rise structure such as a building by an all-weather construction method. It is about.

[0002]

2. Description of the Related Art Conventionally, as a construction method of an all-weather type of a high-rise building such as a building, first, a frame to be a top floor is assembled on a ground portion, and the top floor frame is lifted by a lift-up device, and the bottom of the top floor frame is placed on a lower surface. Using the attached crane, the pillars and beams on the first floor are built, and after the construction on the first floor is completed, the top floor frame is further raised, and the second floor is built, and so on. A method of sequentially building upper floors is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 7-286368.

FIG. 4 shows the above-described conventional lift-up device for the top floor frame, 1 is the top floor frame, 2 is a main pillar already built in a high-rise building (not shown), and 3 is the above-mentioned main building. Beam bracket fixed to column 2 by welding, etc.
Reference numerals 4 and 4 denote temporary pillar frames which are vertically spaced apart from each other on the lower surface of the top floor frame 1 facing the upper part of the main pillar 2, and 4a and 4a are vertically separated from the pillar frames 4 and 4, respectively. The pin receiving holes 5 and 5 formed by
A support stopper, which is provided at a position facing the lower end of each of the four lower ends and is capable of protruding inward in the horizontal direction, 6 is a hydraulic jack which is movable vertically between the column frames 4, 4;
6a and 6b are pins provided on both sides of the piston rod and the cylinder of the hydraulic jack 6 so as to be freely inserted into the pin receiving holes 4a and 4a, respectively, and 7 and 7 are lower surfaces of the support stoppers 5 and 5, respectively. It is a supporter protruding from.

Since the above-mentioned conventional lift-up device for the top floor frame has the above-described structure, the upper part of the main pillar 2 is inserted between the lower parts of the temporary pillar frames 4 and 4 and the supporter is supported. The stopper 5 is projected inward in the horizontal direction, and is mounted on the upper part of the beam bracket 3 of the main pillar 2 via the supporters 7, 7, whereby the top floor frame 1 is connected to the pillar frame 4. , 4 can be supported on the main pillar 2.

Accordingly, in this state, a new pillar 8 is inserted between the hydraulic jack 6 and the permanent pillar 2 as shown in FIG. 5, and the new pillar 8 is connected to the permanent pillar 2 by welding or the like. Let me know.

Next, the piston rod of the hydraulic jack 6 is extended to the maximum from the state shown in FIG. 5, and the cylinder is lowered and mounted on the new column 8, and in this state, the cylinder is opposed to the column The pins 6b, 6b are inserted into the pin receiving holes 4a, 4a of the frames 4, 4, and the pins 6a, 6a of the piston rod are inserted into the pin receiving holes 4a, 4a.
Remove from

In this state, the hydraulic jack 6 is operated to draw the piston rod into the cylinder, thereby lowering the piston rod relative to the column frame 4 as shown in FIG. The pins 6a, 6a of the piston rod are inserted into the corresponding pin receiving holes 4a of the column frame 4, and the pins 6b, 6b of the cylinder are removed from the pin receiving holes 4a of the column frame 4.

In this state, the uppermost frame 1 is supported on the upper surface of the new column 8 via the hydraulic jack 6 and the column frame 4, so that the column frame 4 is supported as shown in FIG. The stopper 5 is pulled in from the beam bracket 3 of the main column 2.

Next, by operating the hydraulic jack 6,
When the piston rod is extended, the top floor frame 1 rises relative to the new column 8 by the extension of the piston rod.

By repeating the above operation, as shown in FIG. 7, the support stoppers 5 of the column frames 4, 4 are placed on and engaged with the upper portions of the beam brackets 3 of the new columns 8 via the supporters 7, 7. If the hydraulic jack 6 is moved relatively to the column frames 4 and 4 to a position where it can be made, and the support stopper 5 is placed and engaged on the beam bracket 3 of the new column 8, the top floor frame 1 can be supported by the beam bracket 3, and the hydraulic jack 6 is operated in the same manner as described above to move the hydraulic jack 6 relatively upward with respect to the column frames 4, 4, thereby obtaining the hydraulic jack 6. A newer pillar can be connected between the new pillar 6 and the new pillar 8, and the operation up to the top floor can be performed by repeating this operation.

In the method of constructing a structure as described above, when there is a difference in the load imposed on the left and right supporters 7, 7 due to a difference in height of the mechanical mounting positions of the left and right beam brackets 3, the new pillar 8 is used. Because it will lean to either one,
The height is adjusted by interposing a height adjusting plate (shim plate) between the supporters 7, 7 and the beam bracket 3.

[0012]

However, in this means, the preceding structure once landed on the beam bracket is slightly elevated, the height adjusting plate is inserted, and the lift is lowered again, so that the right and left supporters are lowered. It was necessary to check whether the supporting loads of the wings were even and to readjust them in some cases.

The present invention has been made to eliminate the above disadvantages.

[0014]

According to the present invention, there is provided a load equalizing apparatus in a structure elevating / lowering apparatus, wherein a hydraulic jack is interposed between right and left supporters of a column frame supporting a preceding building and left and right beam brackets of a new column. At least, the same hydraulic pressure is applied to each of the hydraulic jacks.

Further, in the load equalizing device in the structure lifting device according to the present invention, the hydraulic pressure applied to the hydraulic jack is maintained as it is.

Further, in the load equalizing device of the structure lifting device according to the present invention, the hydraulic jack is inserted between the left and right supporters of the column frame supporting the preceding structure and the left and right beam brackets of the new column. The present invention is characterized in that the hydraulic pressures of the hydraulic jacks are different from each other in order to incline the new pillar.

Further, the hydraulic jack is characterized in that it has means for mechanically locking the stroke of the hydraulic jack.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIG. 1, hydraulic jacks 9, 9 are provided below the left and right supporters 7, 7, and stop valves 10, 10, pressure-resistant hoses 11, 9, respectively.
11 and a common stop valve 13 having a check valve 12 for connection to a manual hydraulic pump 14.

Since the load equalizing device in the structure lifting / lowering device of the present invention has the above-described structure, the hydraulic pump 1
When the operator operates the hydraulic jacks 4, equal hydraulic pressures are applied to the hydraulic jacks 9 and 9, and the strokes of the hydraulic jacks 9 and 9 are automatically adjusted so that the supporting loads become equal.

In this state, the stop valves 10, 1
By closing 0, the stroke of the hydraulic jacks 9, 9 can be fixed at that position.

The stroke of only one hydraulic jack 9 can be changed by opening one stop valve 10.

Incidentally, each of the hydraulic jacks 9, 9 may be mechanically locked as shown in FIG.

In FIG. 2, 15 is a piston, 16 is a piston cylinder, 17 is a return spring of the piston 15, 1
8 is a hydraulic pressure introducing hole, 19 is a safety nut screwed to the outer peripheral surface of the piston cylinder 16 so as to be able to advance and retreat in the axial direction.
Denotes a rotary handle, and after the piston 15 is raised by hydraulic pressure, the safety nut 19 is moved axially outward relative to the piston cylinder 16 via the rotary handle 20 so that the upper surface is the lower surface of the supporter 7. , The supporter 7 can be safely held at that position even if the hydraulic pressure subsequently decreases and the piston 15 descends.

FIG. 3 shows new pillars 8, which are arranged adjacent to each other.
8 and two related columns 4 and 4
FIG. 4 shows a new beam 21 inserted between the pair of beam brackets 3, and in the present invention, the stroke of the hydraulic jack 9 installed below the outer one of the supporters 7, 7 in one of the two sets is made smaller than the inner one. Smaller, so that
As shown by the dashed line in FIG. 3, the preceding construction including the new pillar 8 related thereto is inclined outward.

According to this embodiment, the insertion of the new beam 21 becomes extremely easy.

[0027]

As described above, according to the load equalizing device in the structure elevating / lowering device of the present invention, the load imposed on the supporters 7 supporting the preceding structure can be equalized with each other very easily. In addition to preventing the pillar 8 from tilting, the preceding building can be reliably supported, and in some cases, the hydraulic pressures of the hydraulic jacks 9, 9 related to the left and right supporters 7, 7 are made different from each other so that the preceding building including the new pillar 8 can be moved outward. There is a great advantage such that the installation of a new beam 21 can be facilitated by inclining it.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a load equalizing device in a structure lifting device according to the present invention.

FIG. 2 is a cross-sectional view of a hydraulic jack related to a supporter in a load equalizing device in the structure lifting / lowering device of the present invention.

FIG. 3 is an explanatory view of another embodiment of the device of the present invention.

FIG. 4 is an explanatory front view of a conventional lift-up device for a structure-building top floor frame.

FIG. 5 is a front view for explaining a conventional method of lifting up the top floor frame for building a structure.

FIG. 6 is a front view for explaining a conventional method of lifting up the top floor frame for building a structure.

FIG. 7 is a front view for explaining a conventional method of lifting up the top floor frame for building a structure.

[Description of Signs] 1 Top floor frame 2 Main pillar 3 Beam bracket 4 Pillar frame 4a Pin receiving hole 5 Support stopper 6 Hydraulic jack 6a Pin 6b Pin 7 Supporter 8 New pillar 9 Hydraulic jack 10 Stop valve 11 Pressure resistant hose 12 Check valve 13 Stop Valve 14 Hydraulic Pump 15 Piston 16 Piston Cylinder 17 Piston 18 Hydraulic Inlet 19 Safety Nut 20 Rotating Handle 21 New Beam

Claims (4)

[Claims] 1. A hydraulic jack is inserted between left and right supporters of a column frame supporting a preceding building and left and right beam brackets of a new column, and equal hydraulic pressure is applied to each of the hydraulic jacks. A load equalizing device in a structure lifting device. 2. A load equalizing device in a structure lifting / lowering device according to claim 1, wherein the hydraulic pressure applied to said hydraulic jack is maintained as it is. 3. A hydraulic jack is inserted between left and right supporters of a column frame supporting a preceding building and left and right beam brackets of a new column, and the hydraulic pressure of each of the hydraulic jacks is different from each other to incline the new column. A load equalizing device in a structure lifting / lowering device, characterized in that: 4. The apparatus according to claim 1, further comprising means for mechanically locking a stroke of the hydraulic jack.
4. A load equalizing device in the lifting device for a structure according to 2 or 3.