JPS5817775Y2 - Fixing structure between balustrade pillars and guard pipes - Google Patents

Description

[Detailed description of the invention] This invention relates to a fixing structure between a railing bundle column and a guard pipe.

Conventionally, protective fences installed at the side ends of bridges are constructed by horizontally mounting and fixing guard pipes between the balustrade pillars erected at required intervals. To fix the pillar and guard pipe, first insert the guard pipe into the guard pipe insertion hole provided on the balustrade column, and then use the bolt hole drilled from the outside of the balustrade column into the guard pipe insertion hole. Then, the guard pipe was fixed in the guard pipe insertion hole with a bolt.

However, this fixing method has a problem with the strength of the balustrade column itself because bolt holes are provided in the balustrade column, and it also takes time and effort to process the bolt holes, and the bolt part may become corroded, causing the fixation to loosen. There was a risk.

Another method is to provide a sloped bottom surface in the guard pipe insertion hole and use a wedge action to fix the two tightening pieces in the insertion hole so that they are connected and fixed to the bundle post. It took time and effort to connect the two to each other with bolts, and the work was complicated.

This invention aims to eliminate such drawbacks and provide a structure for fixing the balustrade pillars and the guard pipe, which allows the balustrade pillars and the guard pipe to be fixed with simple work.

An embodiment of this invention will be explained based on the drawings. Figures 1 and 2 show front and side cross-sectional views, and numeral 1 is a bundled post for the railing, and the upper part of the bundled post 1 has a guard A pipe insertion hole 2 is provided, and a bolt 3 is attached to the side end A of the bridge at the bottom.
It is fixed at .

The guard pipe insertion hole 2 provided in the railing bundle column 1 has a completely cylindrical shape, and a part of the insertion hole is cut out as shown in Fig. There is also a guard pipe having the shape of , and in all of them, the guard pipe is inserted through the guard pipe insertion hole 2 from the openings at both ends thereof.

That is, the guard pipe 4 is inserted through the opening of the guard pipe insertion hole 2 to be horizontally suspended between the balustrade pillars 1.

Here, the guard pipe 4 suspended horizontally between the parapet bundle columns 1 is fixed by the following structure.

That is, a wedge driving groove 5 is formed on the inner peripheral surface of the guard pipe insertion hole 2.

This wedge driving groove 5 forms a taper with a slope that gradually widens from the inner circumferential surface center C corresponding to the center line B of the balustrade bundle column 1 toward the openings at both ends of the guard pipe insertion hole 2. do.

After inserting the guard pipe 4 into the guard pipe insertion hole 2, the wedge 6 is driven from one opening of the wedge driving groove 5, that is, from one end of the groove, beyond the center portion.

The wedge 6 is prevented from being easily removed after being driven by using a spring pin having elasticity.

(See Fig. 4) When driving the wedge 6 into the wedge driving groove 5, if it is driven beyond the center C of the inner circumferential surface, it will be possible to secure it more firmly and at the same time, the center C of the inner circumferential surface C. By fixing with , it is possible to prevent the guard pipe 4 from tilting when it is fixed.

In this way, when the wedge 6 is driven through either opening of the wedge driving groove 5, the guard pipe 4 is fixed in the guard pipe insertion hole 2 by the wedge.
In particular, by setting the length of the wedge 6 to a required length, the wedge 6 can be kept hidden within the wedge driving groove 5.

According to this invention, the guard pipe can be easily fixed by driving a wedge using the wedge driving groove,
Moreover, since the wedge driving groove is formed with a slope that gradually widens from the center toward the openings at both ends, it is possible to drive the wedge from either of the openings at both ends. This prevents the wedge from becoming gradually loosened even by slight vibrations of the bundle column over a long period of time.Furthermore, since the wedge is driven beyond the center of the wedge driving groove, the spring pin should be placed in the center of the wedge driving groove. It is squeezed between the top and the guard pipe to function as a wedge, and is able to absorb vibrations from all directions, completely preventing the wedge from loosening, and also improving the elasticity of the spring pin. This has the effect of making the driving work easier.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional front view taken along line I--I in Fig. 2 showing the proposed structure, Fig. 2 is a cross-sectional side view taken along line ■■-■■ in Fig. 1, and Fig. 3 is a cross-sectional front view showing another example. , FIG. 4 is an explanatory diagram of the spring pin. 1: Strap for railing, 2 Niggard pipe insertion hole, 4 Nigard pipe, 5: Wedge driving groove, 6: Wedge.

Claims (1)

[Scope of utility model registration request] Guard pipe insertion holes are provided in the balustrade pillars erected at the required intervals on the side edges of the bridge, and the guard pipes are inserted horizontally between the balustrade pillars and fixed by inserting the guard pipes into the insertion holes. In this structure, on the inner peripheral surface of the guard pipe insertion hole,
A wedge-driving groove with a chevron-shaped cross section is formed with a slope that gradually widens from the center toward the openings at both ends of the guard pipe insertion hole, and the top of the chevron-shaped cross section is formed from the end of the groove in the groove. A structure for fixing a guard pipe to a balustrade column, characterized in that the guard pipe is fixed to the guard pipe insertion hole by driving an elastic spring pin as a wedge beyond the center part.