JPH0318396Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is preferably used, for example, when applying a lining material to the inner surface of a hopper for storing powder or granules, or to a falling surface where powder or granules fall. This invention relates to fasteners for lining materials.

[Conventional technology]

As illustrated in Fig. 4, lining material A made of ultra-high molecular weight polyethylene with excellent wear resistance and sliding properties is applied to the inner surface of the hopper that stores powder and granules, etc., so that the hopper inner wall is worn by the powder and granules. In order to prevent the bridging phenomenon of powder and granular materials, the lining material A is fixed to the hopper inner wall at multiple points by fasteners 1 such as rivets stud welded to the hopper inner wall.

As illustrated in FIG. 8, a conventional fastener 1 includes a shaft body 3 such as a bolt having threads 2, and a shaft body 3 such as a bolt having threads 2.
The shaft body 3 is stud-welded to the construction surface B, and by screwing the screw hole 5 of the flange 4 into the shaft body 3, the flange 4 is attached to the shaft body. The lining material A was placed on the lining material A disposed around the lining material 3, and the lining material A was pressed and fixed against the construction surface B by the flange 4.

[Problem that the invention attempts to solve]

However, in the conventional fastener 1 described above, the lining material A is pressed against the construction surface B by the flange 4 screwed into the shaft body 3, so that if severe vibrations are repeatedly transmitted to the fastener 1, the threaded joint between the two There was a problem that the flange 4 could become loose and, in severe cases, could fall off the shaft body 3. In addition, when installing lining material A over a wide area, as can be inferred from Figure 4, fasteners 1 must be provided at a large number of locations, but stud welding is required at many locations. There was a problem in that the work of screwing the flange 4 into the shaft body 3 one by one was troublesome and required a great deal of labor and time.

This invention solves the problems of conventional fasteners, and it not only securely presses and fixes the lining material against the construction surface, but also prevents the flange that presses the lining material against the surface even when intense vibrations are transmitted repeatedly. It is an object of the present invention to provide a fastener that does not loosen or fall off, and can also be installed at many locations with good workability even when the fasteners are used to fix multiple locations on a lining material. .

[Means for solving problems]

In order to solve the above problems, the stop of the present invention is
It consists of a shaft that is stud-welded to the construction surface of the lining material, and a flange that is fitted into the shaft and overlapped with the lining material. By fitting the shaft into the through hole and crushing the upper end of the shaft to make it bulge out to the side, the overhang presses against the tapered wall of the through hole. The main point lies in the points that have been constructed.

[Effect]

The fastener with the above structure is constructed by fitting the through hole of the spring into the shaft that is stud-welded to the construction surface, and crushing the upper end of the shaft to make it bulge out to the side. When the hole wall is pressed against the hole wall, the flange overlapped with the lining material is pressed against the lining material because the hole wall is configured to expand outward and taper, thereby fixing the lining material to the construction surface. .

〔Example〕

Hereinafter, the fastener of the present invention will be explained with reference to examples.

As illustrated in FIG. 1, the fastener 1 of the present invention consists of a shaft 11 and a flange 21. The shaft body 11 has one end 12 and the other end 13 having the same trapezoidal cross section. Such a shaft body 11 is made of iron,
It is easily manufactured by cutting or forging metals such as steel and stainless steel, and alloys such as hasroids. The flange 21 has a circular shape and has an outwardly expanding tapered through hole 22 at its center, and an outer peripheral end surface 23 of the flange 21 is formed into an outwardly tapered surface. Such a flange 21 is also manufactured by cutting or forging the same metal or alloy as described above.

FIG. 2 shows a state in which the flange 21 is fitted into the shaft body 11. As is clear from the figure, the shaft body 11 has a small diameter hole drilled in the lining material A.
Stud welded to construction surface B inside _A1 . Generally, the shaft body 11 is attached to a welding gun and stud welded to the construction surface B.
The one end 12 and the other end 13 have the same trapezoidal cross section, and the one end 12 is connected to the construction surface B.
It is also possible to stud weld the other end 13 to the construction surface B.
Since it is also possible to perform stud welding on the shaft body 11, the operator may attach one end portion 12 of the shaft body 11 to the welding gun or the other end portion 13 to the welding gun. Therefore, the operator does not have to decide each time whether the shaft body 11 to be attached to the welding gun should have one end 12 or the other end 13. This means that when lining the inner surface of the hopper,
This is extremely advantageous in improving the overall workability when it is necessary to stud weld a large number of shaft bodies 11. When the shaft body 11 is stud-welded as described above, the one end portion 12 of the shaft body 11 melts into the steel plate having the construction surface B, and its trapezoidal cross-sectional shape disappears.
On the other hand, as shown in FIG.
2 and the other end 13 are protrusions 1 made of a low melting point metal.
If 4 and 15 are provided in one piece, for example, when stud welding the one end portion 12 to the construction surface B,
Since the protrusion 14 melts first and the one end 12 of the shaft body 11 melts easily, the shaft body 11 can be stud-welded quickly and reliably to the construction surface B.
Helps improve work efficiency.

The flange 21 has its through hole 22 fitted into the shaft 11 which is stud-welded to the construction surface B.
It is superimposed on the lining material A disposed around the lining material A. From this state, the upper end of the shaft 11, in the case of the illustrated example, the other end 13, is struck using a hammer or a nailer, and the other end 13 is smashed and protruded laterally, as shown in FIG. The overhanging part 13
a presses against the tapered hole wall of the through hole 22. In this way, the overhanging portion 1 of the shaft body 11
When the tapered hole wall of the outwardly expanding tapered through hole 22 of the flange 21 is pressed by the flange 3a, the flange 21 is pressed downward in FIG. Press. Therefore, the lining material A is sandwiched and fixed between the construction surface B and the flange 21. Note that the taper angle α of the hole wall of the through hole 22 is preferably set to about 88.5 to 86.0 degrees. If this taper angle is larger than 88.5 degrees, the pressing force of the overhanging portion 13a of the shaft body 11 against the tapered hole wall of the through hole 22 of the flange 21 is weak, and there is a risk that the flange 21 may fall off from the shaft body 11. , 86.0 degrees, it becomes difficult to crush the upper end portion of the shaft body 11, that is, the other end portion 13, and make it extend over the entire tapered through hole 22. Further, the protruding length L of the shaft body 11 from the flange 21 is preferably 2 to 5 mm, but it can be set to various lengths depending on the hardness of the metal. Furthermore, since the flange 21 is pressed against the lining material A by crushing the upper end of the shaft 11, even if severe vibration is transmitted to the stop 1, the flange 21 will not loosen or fall off from the shaft 11. No worries.
Furthermore, the work of crushing the upper end of the shaft body 11 using a hammer or a riveting machine can be done much more easily and quickly than the conventional work of screwing a flange onto the shaft body, so it can be done at multiple locations. The overall workability when it is necessary to provide the stopper 1 in the structure is greatly improved compared to the conventional method. Note that 6 is a ring-shaped gasket made of neoprene rubber, which prevents dirt and moisture from entering.

In FIGS. 2 and 3, a large diameter recess A ₂ is formed in the lining material A, and a flange 21 is overlapped on the upper surface of this recess A ₂ so that the flange 21 does not protrude from the recess A ₂ . It shows. By doing so, there is an advantage that the powder or the like can smoothly slide down on the lining material A without being caught by the flange 21, and the outer surface of the flange 21 is less likely to wear out. In addition, when the flange 21 is accommodated in the recess _A2 in this way, the recess
There is a concern that particles and the like may accumulate in the space around the flange 21 in A ₂ and the lining material A may not be able to expand smoothly. Since it is configured with a tapered surface, powder, granules, etc. that have accumulated in this space can be scooped out and removed with the tapered surface.
It has the advantage of being able to expand smoothly.

Figures 5A and 5B show other examples of the shaft 11 that is a part of the fastener, where A shows one in which only one end 12 is conical, and B shows one in which both ends are arcuate. It shows. These shaft bodies 11 are also stud-welded to the construction surface, and the upper end (other end 13)
is to be crushed.

FIG. 6 shows another example of a flange 21 which is a part of a stopper, and has a partially spherical outer surface and a tapered through hole 22 that expands outward in the center. As shown in FIG. 7, this flange 21 is attached to the shaft body 11 with the lining material A being too thin to form the recess A2, so that the flange 21 is attached to the shaft body ₁₁ with the lining material A protruding from the surface of the lining material A. It is preferably employed when fixing to surface B.

It goes without saying that the shaft and the flange can be freely combined.

[Effect of idea]

As mentioned above, the fastener of the present invention can be made by simply fitting the through hole of the flange into the shaft body stud welded to the construction surface and crushing the upper end of the shaft body, and the overhanging part is formed into the tapered shape of the through hole. Since the lining material can be fixed to the construction surface by pressing against the wall, work efficiency is greatly improved compared to conventional methods, and there is no need to worry about the flange loosening or falling off even if strong vibrations are transmitted to the fasteners. Therefore, the stopper of the present invention can be suitably used when installing a lining material in a place that is subject to repeated and violent vibrations, such as the hopper of a powder carrier or the falling surface of powder or granular material.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing a fastener according to an embodiment of the present invention, Fig. 2 is a cross-sectional view showing the state in which the flange is fitted into the shaft body, and Fig. 3 is a cross-sectional view showing the state in which the fastener is used. Figures 4 and 4 are front views of main parts showing an example of applying lining material to a hopper, Figures 5 A and B are sectional views showing other examples of the shaft, and Figure 6 is a sectional view showing other examples of the flange. , FIG. 7 is a sectional view showing how the flange is used, and FIG. 8 is a sectional view showing how the conventional stopper is used. DESCRIPTION OF SYMBOLS 1... Stopper, 11... Shaft, 12... One end of the shaft, 13... Other end of the shaft, 13a... Overhang, 21... Flange, 22... Through hole of flange , A...Lining material, B...Construction surface.

Claims (1)

[Claim for Utility Model Registration] Consists of a shaft body stud-welded to the construction surface of the lining material, and a flange that is fitted into this shaft body and overlapped with the above-mentioned lining material, into which the above-mentioned shaft body is fitted. The through hole is configured to expand outward and taper, and by fitting the shaft into the through hole and crushing the upper end of the shaft so that it overhangs to the side, the overhanging portion of the through hole is expanded. A fastener for a lining material, characterized in that it is configured to press against a tapered hole wall.