A LINER COMPONENT FOR USE IN MINING AND QUARRYING INDUSTRIES
FILED OF THE INVENTION
This invention relates to liner component for use in mining and quarrying industries.
This invention further relates to wear and impact resistant liner component for
handling lumpy ore/materials in mining and quarrying industries.
BACKGROUND OF THE INVENTION AND PRIOR ART
The materials that are used to withstand load and consequently wears, are presently
rubber, cast, white iron alloys and various grades of abrasion resistant liner.
However, no suitable material is known, which can be used for resistance of lumpy
ore/materials. Therefore, the need exists to provide materials for use in liner
components, which are abrasion resistant and impact resistant to lumpy materials
and are also suitable rigid.
US-A-3953950, JP-A-09-010613 and US-A-5055336 disclose some examples of
prior art liner components for different purposes, based on rubber or similar material
and metal bars: Further examples of prior art liners are disclosed in US-A-3883080,
GB-A-1075372, AU-549123-B2 and US-A-3350832.
US-A-3 953 950 is considered the closest prior art and forms the basis for the
present invention.
OBJECTS OF THE INVENTION
It is an object of this invention to provide liner components, which are abrasion
resistant, wear resistant and rigid.
It is another object of this invention to provide liner components, which have greater
life and are thus economical.
A further object of this invention is to provide liner components, which can save the
mother plates of the chutes or hoppers from damage.
These and other objects of the invention will be apparent from the ensuing
description.
SUMMARY OF THE INVENTION
Accordingly, the present invention provides a wear and impact resistant liner
component for use in mining and quarrying industries comprising a rubber matrix
rigidly supported on a steel plate, said rubber matrix having been provided with a
plurality of steel strips spaced apart from each other, characterised in that said
steel strips being orthogonally inserted into the rubber matrix, and wherein the lower
ends of the steel strips lie close to and above the said steel plate, not supported on
the steel plate.
In accordance with preferred embodiments of the liner of the present invention :-
- the said steel plate is provided with a plurality of pilot holes designed for fixing the
liner component with the mother plates of chutes/hoppers used for handling solid
materials;
- counter holes are provided in the rubber matrix for the purposes of fixing and
plugging;
- the number of and spacing apart of the steel strips are designed based on the lump
size of the material being handled.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The invention is now described with reference to the accompanying drawings in
which
Fig. 1 shows a plan view of the liner of the invention.
Fig. 2 shows a part sectional view A-A of one type of the liner of the invention
showing steel strips inserted into the rubber and supported on a backing steel plate.
This embodiment is not claimed but provided only as information to the public.
Fig. 3 shows a part sectional view B-B of another type of the liner of the invention
showing steel-strips inserted into the rubber, short of the backing steel plane and
Fig. 4 shows a part isometric view of the liner.
DETAILED DESCRIPTION OF THE DRAWINGS
It will be seen from figure number 1, that the liner and made of wear and impact
resistant rubber has rubber portion (1) and longitudinally provided steel strips shown
in dotted lines. There are thus provided a plurality of such steel strips at pre-selected
places according to requirements and exigencies of the situation. The manner in
which these steel strips are provided are shown in more detail in figures 2, 3 and 4.
Figure number 1 also shows in dotted lines counter holes (4) provided on the rubber
for fixing and plugging.
There are also pilot holes (5) on the backing steel plate more clearly shown in the
other figures, for fixing with mother plates of chute/hopper which are the equipment
of handling materials, and the main equipments on which the components according
to the invention are used.
Figure number 2 shows an embodiment of the invention in front cross section. It
shows the rubber portion (1), backing steel plate (2), vertically inserted steel strips
(3) fixed to the steel plate and supported on the same. This figure also shows the
counter holes (4) and pilot holes (5) clearly.
Figure number 3 is slightly different from figure number 2 in that the steel strips are
terminated a little distance away from the steel plate and are thus not supported on
the steel backing plate.
Figure number 4 is a part isometric view of figure number 2.
The components are mainly used for resistance to lumpy ore/materials upto 3-4 ton
lumps with velocity. They ensure greater life compared to other liners as on date.
They save the mother plates of chutes and hoppers from simultaneous damage and
reduce the overall cost.
Principle of the working of the liner of the invention
After the lumps on hit the steel-strips, the acting force will be divided into various
directions. Only perpendicular force will be on the steej strips and other shearing
forces will be absorbed by rubber due to its dampening properties and will resume its
original shape due to its elasticity. There will be little or no wear and no permanent
deformation.
The total impact force is thus neither acted on the steel strips nor on the rubber.
Steel-strips and rubber both take the share of forces. In case of floated steel strips
with rubber, perpendicular force will also be transmitted to rubber.
Steel strips ensure that the rubber is not cut through during operation.
WE CLAIM:-
1. A wear and impact resistant liner component for use in mining and quarrying
industries comprising a rubber matrix (1) rigidly supported on a steel plate (2), said
rubber matrix having been provided with a plurality of steel strips (3) spaced apart
from each other, characterised in that said steel strips being orthogonally inserted
into the rubber matrix, and wherein the lower ends of the steel strips (3) lie close to
and above the said steel plate (2), not supported on the steel plate.
2. A wear and impact resistant liner component as claimed in Claim 1 wherein the
said steel plate is provided with a plurality of pilot holes (5) designed for fixing the
liner component with the mother plates of chutes/hoppers used for handling solid
materials.
3. A wear and impact resistant liner component as claimed in Claims 1 and 2 wherein
counter holes (4) are provided in the rubber matrix for the purposes of fixing and
plugging.
4. A wear and impact resistant liner component as claimed in any of Claims 1 to 3
wherein the number of and spacing apart of the steel strips are designed based on
the lump size of the material being handled.

A wear and impact resistant liner component for use in mining and quarrying
industries comprising a rubber matrix (1) rigidly supported on a steel plate (2), said
rubber matrix having been provided with a plurality of steel strips (3) spaced apart
from each other, characterised in that said steel strips being orthogonally inserted
into the rubber matrix, and wherein the lower ends of the steel strips (3) lie close to
and above the said steel plate (2), not supported on the steel plate.