JPH0510107Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" The invention relates to a steel frame erection adjustment jig.

``Problems that conventional technology and ideas are trying to solve'' Conventionally, straightening the distortion of steel frame construction was generally done through the fifth step.
As shown in the figure, after temporarily assembling the steel columns and steel beams, wires or high-tension chains are hung on the erection pieces that have been temporarily attached to the column heads and column bases to adjust the tension.

However, in this case: ○ If the planar shape of the building is irregular, the wires, etc. may not be able to be stretched.

○ Work to correct the distortion cannot begin until the temporary assembly of each block is completed.

○ Because wires, etc. are strung diagonally from the column head, work at heights is likely to be dangerous, and work to correct distortions cannot begin unless fall prevention facilities are in place.

○ Wires, etc. to correct distortions are strung diagonally, creating restrictions on suspended scaffolding and horizontal curing facilities for fall prevention.

○ Since it is forcibly pulled using a wire, etc., it is necessary to carefully manage the material and tension.

Due to these problems, in recent years, multiple hydraulic or mechanical jacks have been installed around the upper and lower joints of constructed steel columns, and the adjustment of the distortion of the steel columns can be adjusted by adjusting the mutual expansion and contraction. A method was developed to do this (Japanese Patent Application Laid-open No. 102061/1983). according to this,
These problems can be solved because each erected steel column can be straightened and straightened, and no wires or the like are required.

However, using a hydraulic jack not only requires routing a large number of hoses, but also requires hoisting the hydraulic control device to which these hoses connect close to their joints, resulting in considerable disadvantage and inconvenience. , involves danger.

In addition, mechanical jacks do not require hoses or hydraulic control equipment, but because they use a turnbuckle system, the steel columns that carry a large amount of gravity must be supported by the column base and operated manually, making it difficult to implement in real life. It cannot be used at all.

Therefore, the present invention aims to provide a mechanical jack-type steel frame erection adjustment jig that can be easily and easily manually operated.

"Means for Solving the Problem" In order to achieve this object, the present invention loosely inserts the lower half of the screw rod 1 into the cylindrical body 2, and equips the upper and lower parts of the cylindrical body with roll bearings 3, 3, respectively. At the same time, nuts 4, 4 for receiving the roll bearings 3, 3 are screwed and fixed to the middle part and lower end of the screw rod 1, and the lower half of the screw rod 1 is fixed to the nuts 4, 4. The screw rod 1 is rotatably supported by the cylindrical body 2 via each roll bearing 3, 3, and the upper half of the screw rod 1 is screwed through the screw tube 5, so that the upper end of the rod protrudes upward. A rotary operation head 8 is provided on the cylindrical body 2.
Mounting plates 6 and 7 are provided on the outer surfaces of the screw tube 5 and the screw tube 5, respectively.
It is characterized by having the following.

"Function" The proposed jig is to be used in appropriate numbers around the joint when the upper steel column B is erected to the lower steel column A that has already been erected, welded, or fully tightened. , attachment plates 6 and 7 are temporarily connected to the ends of the upper and lower steel columns A and B, respectively, to mechanically intervene between the upper and lower steel columns A and B.

Next, by appropriately operating each rotary operation head 8 to rotate the screw rod 1,
The screw tube 5 is screwed up and down to vertically adjust the erected upper steel column. In this case, it is preferable to use vertical detection means such as a laser device.

Thereafter, the joints of the upper and lower steel columns A and B are connected by welding or final tightening, and the proposed jig is removed.

"Embodiment" Figures 1 and 2 show an embodiment of the present invention, in which the lower half of the screw rod 1 is loosely inserted into a cylinder 2, and roll bearings 3, 3 are installed at the top and bottom of the cylinder, respectively. At the same time, nuts 4, 4 are screwed and fixed to the screw rod 1, and the lower half of the screw rod 1 is rotatably supported by the cylinder 2 through these roll bearings and nuts. ,Also,
The upper half of the screw rod rod 1 is screwed through the screw tube 5, and a nut is screwed and welded to the upper end of the rod that protrudes upward to form a rotary operation head 8, which is connected to the cylinder body 2. Two mounting plates 6, 6, 7, and 7 are joined to the outer surface of the screw tube 5 in parallel in the longitudinal direction.

In addition, each mounting plate 6, 6, 7, 7 is provided with a plurality of through holes 9..., 10... for mounting, respectively.
The nuts 4, 4 supporting the cylinder 2 are held in position by split pins 11, 11.

The structure is as shown above, and in use, each of the cylinder body 2 and the spiral tube 5 is attached to the erection pieces a and b which are temporarily attached in advance at the joint of the upper and lower steel columns A and B to be constructed. The mounting plates 6, 6, 7, and 7 are fitted and connected using bolts and nuts. Similarly, an appropriate number of them are connected around the joint and mechanically intervened between the upper and lower steel columns A and B.

Next, when the nut serving as the rotary operation head 8 provided at the upper end of the screw rod 1 is rotated to the right or left, the screw rod 1 is driven to rotate and the screw tube 5 is rotated.
rises or falls.

By operating and adjusting in this manner, the upper steel column B can be erected vertically as described above, and the construction can be carried out in the correct posture.

Incidentally, one of the plurality of proposed jigs used for one joint, the screw thread 30 shown in FIGS. 3 and 4,
It may be replaced with 40.

"Effects of the invention" According to the invention, not only can the vertical adjustment be made directly for each erected steel column and the erection can be carried out in the correct posture, but also the screw rods protruding upward from the spiral tube 5 Since the rotary operation head 8 is provided at the upper end of the screw rod 1, the rotation operation can be easily performed using the rotary operation head 8. Moreover, the lower half of the screw rod 1 loosely inserted into the cylinder body 2 can be easily rotated using the rotary operation head 8. Since it is rotatably supported by the body via the upper and lower roll bearings 3, 3, the rotational resistance of the screw rod 1 can be made as low as possible. You can eliminate the inconvenience,
Work can be simplified, construction time can be shortened, costs can be reduced, and safety can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention;
The figure is an enlarged longitudinal sectional view of the same example, and Figures 3 and 4 are
FIG. 5, a perspective view showing a substitute screw thread, is an explanatory view showing a conventional example. 1... Screw rod, 2... Cylindrical body, 3...
...Roll bearing, 4, 8... Nut, 5...
Spiral tube, 6, 7... Mounting plate, 30, 40... Screw number.

Claims (1)

[Scope of utility model registration request] The lower half of the screw rod 1 is loosely inserted into the cylindrical body 2, and roll bearings 3, 3 are installed on the top and bottom of the cylindrical body, respectively, and the roll bearings 3 are installed in the middle and lower end of the screw rod 1. , 3 are screwed and fixed, and the lower half of the screw rod 1 is rotatably supported on the cylindrical body 2 by the nuts 4, 4 via the respective roll bearings 3, 3. In addition, the upper half of the screw rod 1 is screwed through the screw tube 5, and a rotary operation head 8 is provided at the upper end of the rod that projects upward, so that the screw rod 1 can be connected to the screw tube 5 by screwing it through. A steel frame erection adjustment jig characterized in that mounting plates 6 and 7 are provided on the outer surface, respectively.