JP3986403B2 - Abrasion resistant liner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the field of anti-bending by heat and pressure vulcanization of a flat vulcanized rubber liner and the field of an abrasion-resistant liner that is easy to convey and easy to install.
[0002]
[Prior art]
Conventionally, flat vulcanized rubber liners, especially the above rubber liners with ceramic pieces embedded in a grid pattern on the surface, have poor heat conduction when heated and compressed from both the upper and lower surfaces, so the central part bulges and becomes flat. There was a defect that it was not formed (for example, Patent Document 1).
[0003]
Therefore, a rectangular steel plate was embedded in the middle of the rubber liner in the thickness direction in parallel with the upper and lower surfaces (for example, Patent Document 2).
[0004]
However, it was complicated to manufacture, and it was necessary to provide a ceramic piece on the head of the mounting bolt via a rubber piece and to support the fixed ceramic piece and the surface around the small piece in the same plane. It was difficult to match or adapt to the position of the existing bolt hole of the steel plate to be attached (for example, Patent Document 2 and Patent Document 3).
[0005]
Since each of the rubber liners is embedded in the rubber liner with a steel plate as a core, it is difficult to simplify the manufacture, and the mounting bolt is used to press and bond the vulcanized rubber to the front and back surfaces of the core steel plate by pressure heating. Needed to be welded or engaged.
[0006]
Further, in the conventional method, as shown in FIG. 7, the head 6a of the large-diameter mounting bolt 6 "for the large-diameter M16 hexagon nut 11 'is fixed to the back surface of the liner 5', and the bolt 6" protrudes. Therefore, when transporting to the site, it is necessary to insert a short vinyl hose 8 for protecting the thread of the mounting bolt 6 "in advance as shown in FIG. Since the liner 5 'cannot be laminated in the upper and lower stages (FIG. 8 (B)), it is bulky and has poor conveying efficiency, and the bolt head 6a is formed low as shown in FIG. Even if the square steel plate 1 'is stretched on the back surface of the liner 5' because the diameter of 6 "is increased, the thickness t of the steel plate 1 'is increased to enhance the supporting force of the mounting bolt 6". There was a need.
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 60-100308 (Claims 1, 2 and 1)
[Patent Document 2]
No. 4-32326 (Claim 1, FIG. 3)
[Patent Document 3]
JP-A-9-10613
[Problems to be solved by the invention]
According to the present invention, there is no deformation of the rubber plate by pressurizing and heating vulcanization of the square vulcanized rubber plate, and the mounting bolt of the rubber plate can be freely attached to and detached from the rubber plate, so that there is no problem in stacking the rubber plates An object of the present invention is to obtain a wear-resistant liner that can easily match the position of a mounting bolt with the position of a bolt hole drilled in an existing steel plate.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention firstly forms a plurality of bolt holes in a rectangular steel plate material, and the bolt holes are respectively aligned with the opening side of the cap nut, and the nut is welded to one surface of the steel plate material. The one surface is heated and pressed to one surface of a flat vulcanized rubber liner, and a cap nut is embedded in the rubber liner to integrate the rubber liner and the steel plate material, and in this state, the other surface side of the steel plate material A wear-resistant liner, wherein the headless screw is formed to be detachably screwed through the bolt hole from above,
Secondly, instead of a cap nut, a short male screw is screwed into a double-sided opening nut, which is welded to the bolt hole of the steel plate material, and the nut is embedded in the rubber liner, and then the other surface of the steel plate material. The wear-resistant liner according to the first invention, wherein the male screw is removed from the side, and the headless screw is removably screwed into the nut.
Third, the wear-resistant liner according to the first or second invention, wherein a ceramic piece is embedded in the other surface of the flat vulcanized rubber liner, and the other surface of the liner is formed by the surface of the piece.
Consists of.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Four bolt holes 2 are drilled at the four corners of the rectangular steel plate material 1 (standard size). 3 or 5 for special shapes.
[0011]
The cap nut 3 is fixed to the steel plate 1 by spot welding (welding 4) in a state in which the opening 3a of the cap nut 3 is matched with the bolt hole 2 opened on one surface of the steel plate material 1.
[0012]
The above-mentioned one surface of the steel plate material 1 thus formed is placed on one surface of a rectangular flat plate vulcanized rubber liner 5 having the same dimensions as the steel plate material 1 and placed on the one surface, and is pressed and heated. The vulcanized rubber liner 5 can be integrated.
[0013]
Since the heat conduction of the steel sheet 1 is good at the time of heating, the rubber liner 5 is heated uniformly in the thickness direction and the plane direction. The rubber liner 5 is also kept flat without being bent in accordance with the flat stress of 1.
[0014]
As shown in FIG. 1, when the ceramic piece 7 is embedded in the other surface of the rubber liner 5, it is formed flat without being bent similarly.
[0015]
At that time, it is sufficient that the thickness t of the steel sheet 1 is 2.5 to 4.5 mm.
[0016]
Instead of the cap nut 3, a short male screw 3 ″ is screwed into the double-sided opening nut 3 ′ to close one opening 3 b of the nut 3 ′, and the other opening is used as the bolt hole 2 of the steel plate material 1. In this state, the contact portion between the nut 3 ′ and the steel plate 1 is spot welded (welded 4) to fix both 1 and 3 ′, and the vulcanized rubber liner is fixed in the same manner as the cap nut 3. The liner 5 and the steel plate material 1 can be integrated flatly without bending by pressurizing and heating 5.
[0017]
A concave nut 3c is formed on one end face of the short male screw 3 ″, and a convex spanner is fitted to the concave nut 3c from the bolt hole 2 side, and the short male screw 3 ″ is rotated in the reverse direction as shown in FIG. C) As shown in the figure, it can be separated from the welding nut 3 ′ and the steel plate material 1.
[0018]
As described above, the rectangular steel plate material 1 is integrally fixed to one surface of the vulcanized rubber liner 5 to form the wear-resistant liner 5a, which is stacked as shown in FIG. As shown in FIG. 1, one end of the mounting headless screw 6 (hexagonal hole, square hole or other set screw) is inserted into the embedded bag nut 3 or embedded both-end opening nut through the bolt hole 2 as shown in FIG. 3 ′ (one end is closed by the rubber liner 5 as shown in FIG. 4 (b)) and the screw 6 is detachably planted and planted as shown in FIG. The screw 6 is inserted into the bolt hole 9 of the mounted steel plate 8 such as a hopper bottom plate, and the mounting nut 11 is screwed into the screw 6 via washers 10 and 10 ', and the liner 5a is placed on the mounted steel plate 8. Can be tensioned.
[0019]
Drilling by aligning the center interval (pitch p) of the bolt holes 2 of the rectangular steel plate material 1 with the center interval (pitch) of the existing bolt holes 9 already drilled in the mounted steel plate 8, The mounting screw 6 can be inserted into the existing bolt hole 9, and the liner 5a can be fastened and fixed with a nut 11 through washers 10, 10 '.
[0020]
In FIG. 1, reference numeral 6 ′ denotes a polygonal hole nut recessed in the end face of the screw 6.
[0021]
【Example】
(1) Thickness of vulcanized rubber liner 16mm
(2) Ceramic piece thickness 10mm
(3) Thickness of rectangular steel plate material 2.3mm
(4) Cap nut or double-sided opening nut M12 hexagon nut (5) Center spacing of bolt holes Match with existing bolt holes of the existing steel plate.
[0022]
【The invention's effect】
Since the present invention is configured as described above, the mounting screw (bolt) can be separated from the wear-resistant liner made of a rectangular flat plate vulcanized rubber liner integrated with the rectangular steel plate material, and the liner is adhered to the upper and lower stages. There is an effect that can be packed and transported in a compact manner.
[0023]
In addition, the bolt holes and pitch of the square steel plate material can be easily matched with the bolt holes and pitch of the existing steel plate so that the wear steel liner can be easily attached to the existing steel plate. Since the mounting screw (bolt) can be sufficiently screwed into the nut, the thickness of the rectangular steel plate can be made relatively small, and the diameter of the mounting screw can be made relatively small, so that the weight can be reduced.
[Brief description of the drawings]
FIG. 1 is an exploded longitudinal sectional view of an abrasion resistant liner of the present invention.
FIG. 2 is a longitudinal sectional view of the liner assembly of FIG.
FIG. 3A is an exploded perspective view of a rectangular steel plate material and a cap nut.
(B) The figure is a longitudinal sectional view of a separated state of a cap nut welded rectangular steel plate material and a rectangular flat plate vulcanized rubber liner.
(C) The figure is an integrated state longitudinal cross-sectional view of the steel plate material and the vulcanized rubber liner.
4A is an exploded perspective view of a rectangular steel plate material, a double-sided opening nut and a short male screw. FIG.
(B) The figure is a vertical sectional view showing a separated state of the square steel plate welded with a double-sided opening nut whose bottom surface is closed with a short male screw and the vulcanized rubber liner.
(C) The figure is a longitudinal sectional view of the steel plate material and the vulcanized rubber liner in an integrated state and a short screw separated state.
FIG. 5A is a perspective view of the liner with the mounting screw separated.
(B) The figure is a front view of the stacked state of the liner.
6A is a plan view of a rectangular steel plate material in the case of five double-sided opening nuts. FIG.
(B) The figure is (a) an enlarged longitudinal sectional view taken along line AA.
FIG. 7 is a longitudinal sectional view showing a fixed state between a conventional wear-resistant liner and a mounting screw.
8A is a bottom perspective view of the conventional liner shown in FIG. 7. FIG.
(B) The figure is a front view of the state before stacking of the liner shown in (A).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Square steel plate material 2 Bolt hole 3 Cap nut 3 'Double-sided opening nut 3 "Short male screw 4 Welding part 5 Flat vulcanized rubber liner 6 Headless screw 7 Ceramic piece

Claims (3)

Drilling a plurality of bolt holes in a square steel plate,
The bolt holes are respectively matched with the opening sides of the cap nuts, and the nuts are welded to one surface of the steel sheet material,
The one surface is heated and pressed on one surface of a flat vulcanized rubber liner, a cap nut is embedded in the rubber liner, and the rubber liner and the steel plate material are integrated.
In this state, the wear-resistant liner is formed so that a headless screw is removably screwed from the other surface side of the steel plate material through the bolt hole. Instead of a cap nut, a short male screw is screwed into a double-sided opening nut, this is welded to the bolt hole of the steel plate material, and the nut is embedded in the rubber liner, and then the other side of the steel plate material is used as described above. The wear-resistant liner according to claim 1, wherein a male screw is removed and the headless screw is removably screwed into the nut. The wear-resistant liner according to claim 1 or 2, wherein a ceramic piece is embedded in the other surface of the flat vulcanized rubber liner, and the other surface of the liner is formed by the surface of the piece.

Images