Ascension is the throat of the mine production system,Brake as the
last line of hoist is the key security system,the main form of it
is the disc brake. Braking is accomplished by friction pair of
friction, It is a process of kinetic energy of heat, Used for the
friction for friction materials, brake is a safe and reliable
guarantee. Mine hoist brake shoe is the main part, if the brake
shoe friction coefficient of performance can not meet the design
requirements, such as there will be produce equipment and the
possibility of personal injury. In the process of mine production,
the disc brake shoe frequently with the brake disc friction to
control the normal operation of the hoist, brake shoe once failure,
will lead to hoist a major accident.
So, choose the high friction coefficient, using cycle longer disc
brake shoe is particularly important.
ZTIC specializing in the production of environmental protection
clean mine hoist brake shoe, drilling rig brake shoe, large
equipment friction block, the national standard, gb contracting
mould design and production of related products.
| Brake shoe size table |
| The hoister manufactures | Specifications and models |
| Citic | 320×238×27 320×238×25 340×238×27 300×200×25 380×240×35 300×200×20 280×200×30 280×195×20 |
| Shanji | 250×175×27 320×200×30 270×180×28 320×200×35 |
| Jingzhou | 280×185×20 280×200×22 280×205×22 |
| Hunan | 310×200×35 260×205×22 301×220×25 |
China's use of disc brake shoe materials are mostly adopted by the
asbestos In the past for a long time, Asbestos main characteristics
are: large friction coefficient, good mechanical strength, high
melting point, and the bonding agent has a strong adsorption
capacity, But there may be some difficult to overcome shortcomings
in asbestos brake shoe:
Asbestos completely dehydrated at 650 ℃, 700 ℃ after decomposition,
its strength will reduce;
Due to poor thermal conductivity of asbestos, can cause friction
heat is difficult to disappear quickly, resulting in heat recession
layer thickening, wear, and also will pollute the environment,
especially asbestos fiber dust, it can make human body produce
canceration;
Asbestos friction performance is seen "hot" recession.
To improve the coefficient of friction and heat dissipation
performance, most manufacturers use high hardness abrasive and
steel wool.
ZTIC production of environmentally friendly non-asbestos brake
shoe, is a kind of the resin and reinforcing fiber are other
instead of asbestos friction material, its features are:
Do not contain asbestos, green environmental protection;
High friction coefficient and good mechanical strength, small heat
recession;
Low abrasion, use cycle is long;
Excluding steel wool and high abrasive hardness, low hardness, not
easy to damage the brake disc.
As people's growing environmental consciousness and the ego to
protect consciousness, environmental protection will eventually replace the asbestos
non-asbestos brake shoe brake shoe, the mainstream products.
