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stone crusher main parts Effect Analysis

7 January, 2015 at 3:45 am in Business

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stone crusher industry has become the flagship product, is mainly used for crushing machine and the broken machine. stone crusher compact simple, small pieces of the eccentric shaft drive force; vertical displacement due to the moving jaw smaller, less material during machining excessive fragmentation phenomenon, small moving jaw jaw plate wear. The main parts of stone crusher is:

(1) The prime mover and transmission parts

General motor prime mover, with a V-belt drive, motor and rack-mounted separately, as a large flywheel pulley.

(2) Rack

Mainly used to support the eccentric shaft (shaft), jaw and bear the crushing force. Common steel (eg ZG35) whole cast, assembled or divided, can also be thick steel plate welded. To increase rigidity, generally outside with vertical and horizontal ribs.

(3) moving the jaw

stone crusher jaw plates fitted work surface (broken plates), usually with ZG45, ZC35 cast, supported by the upper eccentric shafts, bearings and some with plain bearings, some with rolling bearings, thrust plate supported by the lower. Work surface inlaid with moving jaw broken tooth plate, bolted to attention locking. To reduce weight, increase the cut resistance, made box-shaped movable jaw, the bottom of the jaw with a hook to pull the lever hook. The tilt angle of the jaw is usually installed 150_250.

(4) jaw (broken plates) and guard

Face and moving jaw jaw previously installed on the toothed rack, fitted teeth without side shields in both the inner wall of the rack, forming a four-cone crushing chamber. Jaws and shields are in direct contact with the broken material, subject to strong crushing squeeze pressure and friction and wear, so the general wear-resistant material. Commonly used ZGMn13 or expensive high-manganese nickel-molybdenum steel, a small factory in the small stone crusher , also commonly substitute white cast iron.

In order to make the movable jaw plate close to the fixed jaw, between the contact surfaces can pad lead or other fillers. Characteristics of high manganese steel is good wear resistance, but machining performance, welding performance is poor, Casting when brittle, but after 1000 a 1050-degree water quenching, available high tensile, shear, ductility, toughness, so generally at the factory, broken plates are processed by water quenching, when used generally no longer re-heat treatment.

Taking into account the uneven wear different regions and crushing exchange may, jaw and shield are based removable connection, and designed to be able to turn around and use.

(5) an eccentric shaft

Supporting the jaw and the flywheel, subjected to bending, torsion, from crank effect. Eccentricity is generally IO a 35mm, is a native of the most valuable parts, used 42MnMoV, 30MnMoB, 34MnMo high-strength high-quality forged steel processing, also with 45 small steel. It normally takes quenched and other treatment.

(6) the thrust plate (liner)

The role is to support the movable jaw crushing force to the rack and the rear wall, the rear end of the thrust plate there when adjusting device that can be used to adjust the size of the discharge opening. Design, gray cast iron materials are often used by self-broken when an overload condition can determine the size of size. Thrust plate is also a safety device, appeared in the work allowed overloading can automatically stop working, so that the discharge port is increased in order to protect the moving jaw, eccentric shaft, racks and other precious parts without damage. Therefore, there is no special reason, it should not change the original material and size.

(7) Flywheel

The purpose of installing the flywheel is due to the work of the Kenya Concrete Crushing Machines is intermittent, large work function difference between the return stroke and consumption, causing fluctuations in load and speed. This change in speed of the inertial force caused by the motion the sub additional dynamic pressure, reducing the efficiency and reliability of mechanical work, and the other which will cause elastic vibration cyclical fluctuations, thus affecting the strength of each portion. To this end, at both ends of the eccentric shaft rotating member mounted with a certain quality, when the driving power is greater than the resistance of the power, the excess energy reservoir up, so that the kinetic energy is increased; when the resistance is greater than the power drive power, turn the flywheel the energy released to the load, speed control fluctuations within a certain range.

(8) support

Including the eccentric shaft support bearing and moving jaw support. For small and medium Jaw Rolling machine with double row self-aligning. General support moving jaw sliding bearings. Pay particular attention to the bearing lubrication.

(9) adjusting the discharge opening

Currently, minicomputers common wedge type, is adjusted by rotating screw wedge, change the position of the thrust plate, thereby adjusting the size of the discharge port, of course, the inclination of the jaws has changed. Mainframe with hydraulic.

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