JPS5911014B2 - firework parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flint support member used at a construction site, and in particular to a flint support member that is adapted to receive the ends of a large number of struts and flints in contact with each other.

When a hole is dug into the ground, as shown in Figures 1 and 2, in order to prevent the hole from being crushed by the surrounding earth pressure, a large number of planks 1 are driven around the hole to provide earth retention. There is.

A horizontal support material is placed over a large number of upright plates 1 to prevent the plates 1 from falling inward.

As shown in FIG. 3, the supporting material that extends horizontally has a raised part 2 whose side surface abuts against the upright boards 1 to align the boards 1, and a raised part 2 which is perpendicular to the raised part 2. There are a strut 3 suspended in the horizontal direction, and a flint 4 that intersects diagonally with the rib 2 and supports the strut 3 from the side.

These flints 4 support the struts 3 from the sides, and also try to take over the force that the breech 2 receives in the direction of the inside of the hole over as wide a thin area as possible. are joined diagonally to the

Regarding the connection between the flint 4 and the strut 3, conventionally, the third
As shown in the figure, a flint receiving member 5 is provided at the tip of each flint 4, and one side of this flint receiving member 5 is connected to a strut 3 made of H-shaped steel.
It was connected with bolt 6.

However, such fire-strapped members using bolted connections have low strength and stability, are time-consuming to drill holes, fasten, etc., and are more likely to intersect with other struts on the same horizontal plane. Therefore, there was a problem in that there was little freedom in designing the structure that supported the plate material.

The present invention has been made in view of the above problems, and
The purpose of the present invention is to provide a flint support member that has excellent strength and stability, is easy to construct, and can intersect a large number of struts and flints on the same horizontal plane, and for this purpose,
It is equipped with a number of receiving surfaces that come into contact with the tips of the struts and flints, and are arranged in an ingenious way.

Hereinafter, embodiments of the invention will be described with reference to the drawings.

FIG. 4 is a plan view showing one embodiment of the flint support member according to the present invention, and FIG. 5 is a side view as seen from the direction of the arrow 1 in FIG. A flint support member 10 having eight receiving surfaces on the side is connected to the tip thereof, and another strut 11 is connected to the opposite side of the strut 9.

12 is a flint, and the tip of this flint 12 is a flint receiving member 10
On the other hand, the rear end is connected to the rib 8 via the connecting fitting 13 and receives the force applied to the rib 8 together with the strut 9 .

In detail, the fire support member 10 is constructed by welding and joining appropriate type steel such as H-shaped steel and plate steel, and the strut 9
, 11, it has a set of main strut supports 15 perpendicular to the base axis 14.

In addition, as shown in FIG. 6, in order to intersect other struts 16 and 17 perpendicular to the struts 9 and 11 on the same horizontal plane, a pair of struts 16 and 17 having main axes 18 perpendicular to the base axis 14 are provided. A side strut receiving surface 19 is provided.

Further, in order to contact the tip of the flint 12 and link with the strut 9, a main shaft 20. is obliquely intersecting the base axis 14 at an angle of 30 or 45 degrees, for example, and is arranged symmetrically with respect to the base axis 14. 21, a plurality of sets of flint receiving surfaces 22,
23 are provided.

In other words, the flint receiving member 10 of the present application has a main strut support 15, a side strut receiving surface 19, and a flint receiving surface 22, 23 on its outer periphery.
It is integrally equipped with eight receiving surfaces, and is symmetrical with respect to the base axis 14.

Next, to explain the operation of the above embodiment, first, during construction, the flint support member 10 is held at a constant height by a jack or the like, and the struts 9, 11 and the flint 1
The second class is welded together.

In this case, it should be noted that the flint support member 10 comes into surface contact with the tips of these struts 9, 10 and the flint 12.

That is, the tip of the strut 9 comes into contact with the main strut receiving surface 15, and transmits the force received from the rib 8 directly to the other struts 11.

Also, the tip of the flint 12 has an intersection angle θ of 30° or 45', etc.
At this time, the strut 9K comes into contact with the flint receiving surface 22 while intersecting obliquely. At this time, of the force P that the flint 12 receives from the breech 8 via the connecting fitting 13, the component force Pv in the direction of the base axis 14 is The component force PH transmitted to and perpendicular to the base axis 14 cancels out the component force of the flint 12 paired with it.

In addition, the main shafts 20 of the flint receiving surfaces 22 and 23, which are present in multiple sets,
The angles at which the 21 intersect with the base axis 14 are free, and by varying the intersecting angles, one flint receiver member 10 can be used in various ways.

The flint receiving member 10 having eight receiving surfaces includes each strut 9,
The tips of the flint 11 and flint 12 are brought into contact with the front ends of the flint 12 and welded together, but by doing this, compared to the conventional bolt connection, which generates shearing force on the bolts, the flint receiving member is 2. Yield strength and structural stability are improved by ~4 times or more.

The reason for this is that the stress is applied to the surface.

In addition, on-site construction is extremely easy because drilling and alignment of holes for bolt connection, as well as bolt tightening, are not necessary.

Furthermore, as is clear from the part shown in FIG.
By making the intersecting angles of the main axes 20 and 21 of No. 3 different, the degree of freedom and flexibility in design is further increased, which is convenient.
Moreover, it is possible to standardize the product.

FIG. 1 shows a structure in which two of the firework receiving members 10 of the present application are placed side by side and a bridging material 24 is provided on the side beam receiving surface 19, and the beams 9 and 11 are concentrated in this way and the beams 9 and 11 are arranged in parallel to each other. You can also receive even greater power.

As described above, according to the firework receiving member according to the present invention,
By having a receiving surface that comes into contact with the tip of the strut and flint on the side, it has the effect of improving strength and stability, making construction easier, and increasing flexibility in design. be.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the prior art, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a partially enlarged view of FIG. 2, and FIG. FIG. 5 is a plan view showing one embodiment, FIG. 5 is a side view seen from the direction of arrow 7 in FIG. 4, FIG. , is a partial plan view showing another usage example. 8... Ribbon, 9, 11... Strut beam, 10... Flint receiving member, 12... Flint, 13... Connecting metal fittings, 14...
・Base axis, 15... Main strut bearing surface, 16, 17... Stray beam, 18... Main shaft, 19... Side strut bearing surface, 20.2
1... Main shaft, 22, 23... Flint receiving surface, 24...
Crosslinking material.

Claims (1)

[Claims] 1 A set of main strut bearing surfaces perpendicular to the base axis, a set of side strut bearing surfaces having a main axis perpendicular to the base axis, and obliquely intersecting the base axis and arranged symmetrically with respect to the base axis. A firework receiving member integrally equipped with a plurality of sets of firework receiving surfaces each having a main shaft.