JPH0535116Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a lining material that is attached to the inner surface of a metal plate hopper or chute for the purpose of protection, rust prevention, and prevention of adhesion of stored materials. Regarding the mounting structure of materials.

Conventional technology and problems Generally, synthetic resin plates such as ultra-high molecular weight polyethylene and polypropylene, which have excellent inertness, smoothness, and abrasion resistance, are used as lining materials for hoppers and the like mentioned above. There are many.

In order to attach this lining material to a metal frame, it was requested that it be possible to attach it only from the inner side using a hopper, etc., and that it would be possible to achieve a strong attachment, so the publication of Japanese Patent Publication No. 59-14326 was made. The method shown in has been proposed and implemented. In this prior art, as shown in FIG. 4, a mortar-shaped mounting hole 20 is bored in the lining material 2, and a stud bolt 21 is attached to the metal plate frame 1 at the center of the hole.
are welded and fixed upright, and dish-shaped nuts 22 that fit into the mounting holes 20 are screwed onto the bolts 21 to hold down the lining material 2 at multiple locations.

However, in the case of the conventional mounting structure described above, the top surface of the nut 2 is exposed on the surface of the lining material 2 at many locations. For this reason, not only is the appearance poor, and the lining effect is diminished at the exposed portion of the nut 22, but also the nut 22 is repeatedly subjected to external force due to the contents in the hopper, or due to vibration. As a result, the nut 22 becomes loosened, and the nut 22 may come off, making the fixation of the lining material 2 uncertain.

On the other hand, a technique as disclosed in Japanese Utility Model Publication No. 11823/1983 has also been proposed as a lining material mounting structure that prevents exposure of the mounting fittings. The mounting structure according to this prior proposal has a stepped mounting hole 30 in the lining material 2, as shown in FIG.
At the same time, a metal presser fitting 31 having a presser flange 31b at one end of the short cylindrical leg 31a is fitted into the mounting hole 30, and the cylindrical leg 30
By welding the flange 31b to the metal plate body 1 inside, the mounting hole 30 is
The lining material 2 is fixed by pressing the stepped surface 30a of the mounting hole 30, and a disk-shaped closing plate 32 made of the same material as the lining material 2 is press-fitted and fixed inside the surface side of the mounting hole 30 to close the mounting hole 30. This is what I did.

The mounting structure according to this prior proposal is advantageous in that the above-mentioned problem can be solved because the presser metal fitting 31 is not exposed on the surface of the lining material.
However, on the other hand, the following problems arose. First, when the presser metal fitting 31 is welded to the metal plate body 1, the lining material 2, which is generally white in color, becomes stained black on the inner surface of the mounting hole 30 and its surrounding area, resulting in a poor appearance. It becomes extremely unsightly. For this reason, it is necessary to wipe off dirt from each of the many mounting holes individually, which is not only troublesome, but also difficult to clean by wiping completely, especially at the corners and periphery of the mounting hole 30. This tends to result in scattered dirt spots on the surface of the lining material. Secondly, since the presser metal fitting 31 must be welded and attached within a narrow space within the cylindrical leg 31a, the work is very difficult even when spot welding is performed, and in the end, the presser metal fitting 31 is Restricted by miniaturization. Furthermore, the third
In this case, it is necessary to carry out the welding while sufficiently pressing the lining material 2 against the frame 1 side with the holding metal fittings 31 during welding, so it is extremely difficult to attach the lining material to a vertical wall in particular.
Insufficient pressing, presser metal fitting 31 and mounting hole 30
There have been problems such as the possibility that the fixation of the lining material 2 may be incomplete due to a relative dimensional error with respect to the height of the stepped surface.

In view of the above-mentioned background, this invention takes advantage of the advantages of the above-mentioned conventional technologies and compensates for their disadvantages, thereby providing a lining material mounting structure that is even more excellent in terms of workability, fixing force, aesthetic appearance, etc. With the goal.

Means for Solving the Problems This invention uses stud bolts to secure the lining material with nuts through a dish-shaped metal restraining plate.

That is, the configuration is such that a stepped mounting hole is formed in the lining material, with a large diameter hole on the front side and a small diameter hole on the back side, and a stud bolt is welded to stand up on the metal plate frame at approximately the center of the mounting hole. A metal saucer-shaped restraining plate is screwed onto the stud bolt from the upper surface side of its conical main body and is tightened, thereby tightening the restraining flange on the periphery of the restraining plate. This prevents the stepped surface of the mounting hole of the lining material, and a correspondingly shaped closing plate made of the same material as the lining material is provided inside the large diameter hole on the surface side so that its outer surface is flush with the surface of the lining material. The gist is a mounting structure for the lining material that is fitted and fixed.

Embodiment An embodiment of this invention is shown in FIGS. 1 and 2.
In these figures, 1 is a metal plate structure such as a hopper or chute, and 2 is a lining material superimposed on the surface of the structure as an lining material. A synthetic resin board with excellent properties is used. Other materials such as urethane rubber and ceramic plates may also be used.

The lining material 2 is provided with a large number of attachment holes 3 at predetermined intervals. The mounting hole 3 is formed as a stepped hole having a large diameter hole 3a on the front side of the lining material 2, a small diameter hole 3b on the back side, and an annular horizontal stepped surface 3c on the inner peripheral surface.

A stud bolt 4 is erected and fixed to the metal plate frame 1 by electric arc welding at a position approximately at the center of the mounting hole 3. The stud bolt 4 is
As shown in Fig. 2, welding is performed using a stud electric arc welding machine using a threaded stud 5 which has a male thread 4a at the tip and a chuck 4b connected to the rear via a small diameter connecting part 4c so that it can be broken off. After that, by breaking off the chuck portion 4b, it is constructed with the remaining male threaded portion 4a, and is made sufficiently shorter than the thickness of the lining material 2. For example, the height is 10mm thick of lining material 2.
However, it is formed to 6mm.

A nut 7 is screwed onto the stud bolt 4 which is erected and fixed through the upper surface side of the stud bolt 4 through a metal dish-shaped restraining plate 6. The restraining plate 6 is, for example, a type called a weld washer made of a stainless steel plate, and has a horizontal restraining flange portion 6b formed on the periphery of a conical main body portion 6a with a gentle inclination angle. The conical main body portion 6a corresponds approximately to the diameter and depth of the small diameter hole 3b of the mounting hole 3, and fits into the small diameter hole 3b, while the holding flange portion 6
b is smaller than the diameter of the large diameter hole 3a, and the bottom surface is the mounting hole 3
The inner step surface 3c is in contact with the inner step surface 3c. Therefore, by tightening the nut 7 and compressing the restraining plate 6, the stepped surface 3c of the mounting hole 3 is suppressed by the flange portion 6b, and the lining material 2 is fixed to the metal plate body 1. In this embodiment, the thickness of the flange portion 6b is 2 mm, so its upper surface is located approximately on the same plane as the upper end surface of the stud bolt 4, and the upper surface of the nut 7 is also in the tightened state. It is assumed that it is located on the above-mentioned plane.

A disk-shaped closing plate 8 of a corresponding shape is press-fitted and fixed in a space having a height of about 4 mm remaining on the surface side of the mounting hole 3. This closing plate 8 is made of the same material as the lining material 2, for example, ultra-high molecular weight polyethylene, and is formed to have a diameter equal to or slightly larger than the diameter of the large diameter hole 3a of the attachment hole 3. 3a, the surface is flush with the surface of the lining material 2 and is fitted and fixed, and the lower surface is on the upper surface of the flange portion 6b of the restraining plate 6, the upper end surface of the stud bolt 4, and the upper surface of the nut 7. They are in contact with each other or in close proximity to each other in a nearly contacting state. Therefore, the closing plate 8 also functions as a locking member for the nut 7.

To show an example of the construction method of the lining material attachment device of the above embodiment, first, the lining material 2 with the mounting holes 3 formed in advance is stacked on the metal plate frame 1 and temporarily attached using an appropriate temporary fixing jig. Thereafter, stud bolts 4 are welded to each mounting hole 3 to be erected and fixed on the surface of the metal plate frame 1. Next, after fitting the restraining plate 6 and tightening the nut 7, the closing plate 8 is press-fitted and fixed.

In another embodiment shown in FIG. 3, in order to further strengthen the fixation of the closing plate 8, an adhesive covering layer 9 made of a thin rubber plate or the like is attached to the lower surface of the closing plate 8 in advance by gluing or the like. The coating layer 9
The flange part 6 of the restraining plate 6 with adhesive on the lower surface of the
b and/or the upper surface of the nut 7. The reason why the covering layer 9 is provided is that in many cases, it is difficult to firmly adhere the closing plate 8 made of the same material as the lining material 2 to the metal restraining plate 6 etc. directly with adhesive. .

Effects of the invention This invention has the following effects based on having the above-mentioned configuration.

(a) Since the surface side of the lining material of the mounting hole 3 is closed with the closing plate 8, external impact force due to stored objects etc. is not directly applied to the fixing nut 7.
In addition to preventing the nut from loosening due to the impact, the surface of the inner lining made of the lining material 2 can be finished flush with the entire surface, and no stains will be generated, so the slipperiness and dust of the surface of the lining layer can be reduced. It is possible to improve both the adhesion prevention property of particles and the aesthetic appearance.

(b) The stud bolt 4 can be easily installed upright on the metal plate frame 1 by electric arc welding,
After it is erected, the lining material 2 can be completely fixed with a simple operation by screwing and tightening the nut 7 through the restraining plate 6, which improves workability and facilitates the installation of the lining material. of,
This can be done easily and efficiently in both horizontal and vertical planes.

(c) Also, since the lining material 2 is held down by the flange portion 6b of the restraining plate 6 by tightening the nut 7, the relative dimensions such as the height of the restraining plate 6 and the stepped surface 3c of the mounting hole 3 may vary slightly. Even if there is an error, the lining material 2 can always be reliably restrained and fixed by tightening the nut 7, and there is little risk of poor fixation.

(d) Furthermore, when the nut 7 is in the tightened state, the nut is accommodated in the concave portion of the upper surface of the conical main body portion 6a of the dish-shaped restraining plate 6, and the nut 7 and the upper surface of the stud bolt 4 as well as the upper surface of the nut 7 and the stud bolt 4 are Since it is positioned approximately on the same plane as the upper surface of the flange portion 6b, it is possible to use a relatively thick material for the closing plate 8 without being obstructed by the nuts 7 and bolts 4. can be held stably. That is, the lower surface of the closing plate 8 is connected to the flange portion 6.
b and the nut 7 can be held in direct contact with or in close proximity to the upper surface of the nut 7 and stably held, and the closing plate 8 can realize the effect of preventing the nut 7 from loosening, thereby preventing the lining material from being damaged by vibration etc. Deterioration of the fixed state of No. 2 over time can be more reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of this invention, Fig. 2 is a perspective view showing the material for attaching the lining material separated before installation, and Fig. 3 is another embodiment of this invention. 4 and 5 are cross-sectional views showing conventional lining material attachment structures, respectively. 1...Metal plate frame, 2...Lining material, 3...
...Mounting hole, 3a...Large diameter hole, 3b...Small diameter hole, 3
c... step surface, 4... stud bolt, 6... restraining plate, 6a... main body part, 6b... flange part, 7...
...Natsuto, 8...Blocking board.

Claims (1)

[Scope of utility model registration request] A stepped mounting hole having a large diameter hole on the front side and a small diameter hole on the back side is formed in the lining material, and a stud bolt is erected and fixed to the metal plate frame by welding at a substantially center position of the mounting hole, and A metal dish-shaped restraining plate is attached to this stud bolt by screwing a nut from the top side of the conical main body and being press-tightened, so that the lining material can be attached using the restraining flange on the periphery of the restraining plate. The stepped surface of the hole is restrained, and when the nut is in the tightened state, the nut is accommodated in the concave portion of the upper surface of the conical main body of the dish-shaped restraining plate, so that the upper surface of the nut and the upper surface of the stud bolt are both flush with each other. be located substantially on the same plane as the upper surface of the flange portion, and
Inside the surface side of the large diameter hole, there is a closing plate made of the same material as the lining material and having a corresponding shape, the outer surface of which is flush with the surface of the lining material, and the lower surface of which is in contact with the flange portion and the upper surface of the nut. A mounting structure for the lining material, which is positioned close to each other and is fitted and fixed.