JP4231053B2 - Jig for assembling splice plate for connecting upper flange of H-shaped steel frame and assembling method using the same - Google Patents

Description

  In the present invention, after the outer splice plate is placed at a predetermined position on the upper flange of the H-shaped steel frame in which the flange is horizontally disposed, the H splice plate is assembled to the lower surface of the upper flange. The present invention relates to a jig for assembling a splice plate used by being attached to an upper flange of a mold steel frame, and a method for assembling a splice plate using the jig.

When bolting the ends of H-shaped steel frames, an outer splice plate is attached to the upper surface of the upper flange and a pair of left and right inner splice plates are attached to the lower surface of the upper flange to connect the upper flanges of both steel frames. Is done. The bolting operation of the upper flange connecting splice plate and the upper flange is performed at the construction site, but the steel frame is carried into the construction site in a state where the splice plate is temporarily assembled at the processing site in advance.
Temporary assembly work of the splice plate for connecting the upper flange to the H-shaped steel frame at the processing site is performed as follows. First, the outer splice plate is placed on a predetermined position on the upper flange of the H-shaped steel frame placed with the flange disposed horizontally. If the steel frame is large, the outer splice plate is heavy (for example, 27 kg), so when working alone, it is suspended by a crane. Next, an inner splice plate (for example, 12 kg) is disposed on the lower surface of the upper flange, and the bolt insertion hole is met and tightened with a bolt and nut for temporary fixing.
Patent Document 1 (see FIG. 7) discloses a temporary assembly of an inner splice plate (band) that enables this work to be easily performed by one person. This temporary assembly includes locking means and a band support portion. The locking means is a front U-shaped member and is mounted so as to cover the upper flange and the outer splice plate placed thereon. Band support portions are provided at both ends of the locking means. Temporary assembly work is performed as follows. First, the outer splice plate is placed on the upper flange with the position of the bolt hole aligned, and then the temporary assembly is locked so as to be inserted in the longitudinal direction from the end of the steel frame. Next, the inner splice plate (band) is placed on the band support portion, the bolt is positioned, and the bolt and nut are tightened.
JP 7-139181 A

Since the above-mentioned conventional temporary assembly is mounted so as to straddle the steel frame, it must be relatively large and heavy, and there is a problem that workability is poor. In particular, the outer splice plate that is first placed on the upper flange is about half the length of the outer splice plate that projects from the end of the upper flange. It must be mounted on the upper flange by inserting it in the longitudinal direction from the position, and the operation is not easy. In addition, since the center of gravity of the outer splice plate is outside the upper flange, the outer splice plate falls from the upper flange at a fixed position, so at least the temporary splice plate is attached to the upper flange until the temporary assembly is mounted. Must be held on. It is difficult to work alone during this time.
Accordingly, the present invention provides a jig that can easily and safely perform a series of operations alone when temporarily assembling an inner splice plate for connection to a steel frame, and a novel assembly of an inner splice plate using the jig. The challenge is to provide a method.

  In the invention of this application, in order to solve the above-mentioned problem, the main body 2 having a substantially U-shaped cross section having a recess 4 for receiving the edge of the upper flange 22 on which the outer splice plate 24 is placed, and the body 2 are located in the recess 4. The assembling jig 1 for the inner splice plate 25 is configured by including the adjusting member 3 that is coupled to the main body 2 so that the lower end of the outer splice plate 24 is in contact with the upper surface of the outer splice plate 24 so that the vertical position can be adjusted. The main body 2 includes an upper support piece 5 along the upper surface of the outer splice plate 24, a lower support piece 6 that faces the upper support piece 5 in parallel and is spaced from the lower surface of the upper flange 22, and an upper support piece. A connecting piece 7 for joining one end of the piece 5 and one end of the lower support piece 6 is provided. The upper support piece 5 of the main body 2 has a screw hole 5a penetrating vertically. The adjustment member 3 includes a screw rod 8 screwed into the screw hole 5a of the upper support piece 5, and an engagement member 9 provided on the upper portion of the screw rod 8 to hang the rotation tool on the screw rod 8. The lower end of the screw rod 8 is provided with an abutting member 10 provided so as to face the lower support piece 6 and abutting against the upper surface of the outer splice plate 24. In this manner, the inner splice plate 25 inserted in the gap between the lower surface of the upper flange 22 and the lower support piece 6 can be supported, thereby aligning the bolt insertion holes and tightening the temporary fixing bolts 26. Executable with both hands.

  When the inner splice plate 25 for connection is temporarily assembled to the steel frame 21, a series of operations can be easily and safely performed by one person using the jig 1 according to the present invention. Since the jig 1 according to the present invention is small and light so as to be mounted on one side of the upper flange 22, it is extremely easy to mount, remove, carry and move, and greatly improve the work efficiency. It has the effect of being able to. Moreover, even if the size of the steel frame 21 to be applied changes, there is an effect that it is possible to flexibly cope with this by a simple operation of only adjusting the position of the adjusting member 3 that manually rotates the engaging member 9.

  Embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view showing the usage state of the jig of the present invention, FIG. 2 is a front view showing the usage state of the jig of the present invention, FIG. 3 is a front view of the jig of the present invention, and FIG. 5 is a side view of the jig, FIG. 5 is a plan view of the jig of the present invention, and FIG. 6 is a side view showing a procedure for attaching the splice plate.

  In FIG. 1, 21 is an H-shaped steel frame, and the flanges 22 and 23 are horizontally arranged and stacked in a storage place. An outer splice plate 24 is placed on the upper flange 22 at a predetermined position with the bolt holes aligned. The jig 1 is attached to the edge of the upper flange 22 on which the outer splice plate 24 is placed.

  1 to 5, the jig 1 includes a main body 2 and an adjustment member 3. The main body 2 is a substantially U-shaped member having a recess 4 that receives the edge of the upper flange 22 on which the outer splice plate 24 is placed together with the outer splice plate 24, and includes an upper support piece 5, a lower support piece 6, , And a connecting piece 7 that joins both pieces 5 and 6. The upper support piece 5 has a screw hole 5a extending along the upper surface of the outer splice plate 24 and penetrating in the vertical direction. The lower support piece 6 faces the lower support piece 5 in parallel with the lower support piece 5 and extends along the lower surface of the upper flange 22 at a predetermined interval. The connecting piece 7 joins one end of the upper support piece 5 and one end of the lower support piece 6 to form a recess 4 between the support pieces 5 and 6.

  The adjustment member 3 is coupled to the main body 2 so that the vertical position can be adjusted, and is configured such that the lower end located in the recess 4 of the main body 2 abuts the upper surface of the outer splice plate 24. The adjustment member 3 includes a screw rod 8 screwed into the screw hole 5a of the upper support piece 5 of the main body 2, an engagement member 9 provided on the upper portion of the screw rod 8 for rotating the screw rod 8, And a contact member 10 fixed to the lower end of the screw rod 8. The contact member 10 is provided so as to face the lower support piece 6 in parallel and is configured to contact the upper surface of the outer splice plate 24.

  An inner splice plate 25 is inserted into the gap between the lower surface of the upper flange 22 and the lower support piece 6 and supported on the lower support piece 6. The adjustment member 3 is inserted in accordance with the thickness change of the upper flange 22 and the outer splice plate 24 depending on the size of the H-shaped steel frame to be applied, for example, the gap dimension between the lower surface of the upper flange 22 and the lower support piece 6. It is preferable to adjust the position so that the thickness of the inner splice plate 25 is about 5 mm.

  Referring to FIG. 6, the assembling operation of inner splice plate 25 is performed as follows. (1) The outer splice plate 24 is placed at a predetermined position on the upper flange 22 of the H-shaped steel frame 21 in which the flanges 22 and 23 are placed horizontally (FIG. 5A). (2) The assembling jig 1 is mounted on the upper flange 22 so that the edge of the upper flange 22 on which the outer splice plate 24 is placed is received in the concave portion 4, so that the center of gravity is located outside the upper flange 22. The splice plate 24 is placed on the upper flange 22 (FIG. 5B). (3) The inner splice plate 25 is inserted into the gap between the lower surface of the upper flange 22 and the lower support piece 6 of the jig 1 and supported on the lower support piece 6 (FIG. 5C). (4) Alignment is performed by inserting a wrench into the bolt insertion holes of the outer splice plate 24, the upper flange 22 and the inner splice plate 25. (5) Insert the temporary fastening bolt 26 into the bolt insertion hole and tighten it with a nut (FIG. 5D). Since both hands are free after the jig 1 is mounted on the upper flange 22, the subsequent operations (3), (4), and (5) can be performed quickly with both hands. When the tightening of the bolt 26 is completed, the jig 1 is removed and mounted on the opposite side of the flange 22, and the inner splice plate on the opposite side is similarly assembled.

  The jig of the present invention is used for, for example, a work of temporarily fixing an inner splice plate under an upper flange of an H-shaped steel frame in a steel processing site where a large steel frame is handled.

It is a perspective view which shows the use condition of the jig | tool of this invention. It is a front view which shows the use condition of the jig | tool of this invention. It is a front view of the jig of the present invention. It is a side view of the jig of the present invention. It is a top view of the jig of the present invention. It is a side view which shows the attachment procedure of a splice board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Jig 2 Main body 3 Adjustment member 4 Recessed part 5 Upper support piece 5a Screw hole 6 Lower support piece 7 Connection piece 8 Screw rod 9 Engagement member 10 Contact member 21 H-type steel frame 22 Upper flange 23 Lower flange 24 Outer splice plate 25 Inner splice plate 26 bolt

Claims (2)

After placing the outer splice plate in place so that one end projects from the end of the upper flange and the center of gravity is outside the upper flange on the upper flange of the H-shaped steel frame with the flange placed horizontally In the operation of assembling the inner splice plate to the lower surface of the upper flange, a jig used by being mounted on the upper flange of the H-shaped steel frame,
Adjustable vertical position of the main body with a substantially U-shaped cross section with a recess that accepts the edge of the upper flange on which the outer splice plate is placed, and the lower end located in the recess abuts the upper surface of the outer splice plate And an adjustment member coupled to
The main body includes an upper support piece along the upper surface of the outer splice plate, a lower support piece that faces the upper support piece in parallel with a predetermined distance from the lower surface of the upper flange, and one end of the upper support piece. A connecting piece that joins one end of the lower support piece,
The upper support piece of the main body has a screw hole penetrating vertically,
The adjustment member includes a screw rod that is screwed into a screw hole of the upper support piece, an engagement member that is provided on an upper portion of the screw rod to hang a tool for rotation on the screw rod, and a lower end of the screw rod A contact member that is provided to face the lower support piece and contacts the upper surface of the outer splice plate,
When mounted on the edge of the upper flange on which the outer splice plate is placed, the outer splice plate has a weight sufficient to allow the outer splice plate to rest on the upper flange;
By making it possible to support the inner splice plate inserted in the gap between the lower surface of the upper flange and the lower support piece, the bolt insertion hole alignment and the fastening operation of the temporary fixing bolt can be performed with both hands. A jig for assembling the splice plate for connecting the upper flange of the H-shaped steel frame. Placing the outer splice plate at a predetermined position on the upper flange of the H-shaped steel frame with the flange placed horizontally;
By attaching the assembling jig to the upper flange so that the edge of the upper flange on which the outer splice plate is placed is received in the recess, the outer splice plate whose center of gravity is outside the upper flange is placed on the upper flange. And a process of
Inserting the inner splice plate into the gap between the lower surface of the upper flange and the lower support piece of the assembly jig and supporting the assembly with the assembly jig;
A step of performing positioning of the bolt insertion holes of the outer splice plate, the upper flange and the inner splice plate with both hands, and tightening of the temporary fixing bolt;
The assembly method of the splice board using the jig | tool for an assembly | attachment of Claim 1 characterized by the above-mentioned.

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