Jaw Crusher Symptom

Jaw Crusher hosts a sudden stop
Possible causes:

1) jaw coal crushing plant discharge opening clogged, causing wholehearted blocking material;

2) Drive V-belt sheave rotates too loose, causing the belt to slip;

3) Eccentric shaft adapter sleeve loose, causing the bearing housing on both sides of the rack without gaps, the eccentric shaft stuck, unable to rotate;

4) workplace voltage is too low, the host after experiencing aniseed, weakness broken;

5) bearing damage.


Remedy:

1) Clear the blockage discharge opening mining screen to ensure smooth flow of the material;

2) tighten or replace the V-belt;

3) Reinstall or replace the adapter bushing;

4) alignment workplace voltage, to conform to the requirements of the host operating voltage;

5) Replace the bearing.

Jaw Crusher Introduction and Operation

Jaw crusher main working parts is composed of fixed jaw plate and movable jaw plates, movable jaw plate of the fixed jaw plate for a cyclical reciprocating, the material is

crushed between the two jaws. For coarse, medium crushing hard materials and medium hard materials. Of coarse and fine jaw jaw in two forms.

Jaw crusher operation and maintenance points

1, the basic operation

Jaw crusher correct operation is very important. Incorrect operation is often the major cause of the accident. The correct operation of the crushing plantwill also help to

improve production capacity. Correct operation of the device must be in accordance with the operating rules. In large and medium-sized jaw crusher basic operations, for example,

summarized as follows:

1) Preparation before driving

(A) carefully check crusher main parts, such as jaw plate, bearings, connecting rod, thrust plate, rod springs, pulleys and V-belts are in good condition, fastening bolts loose

connections, protective devices such as pulleys, flywheel housings are complete, whether moving parts collide with obstacles.

(2) Check the auxiliary equipment such as feeder, belt conveyor, lubrication station, electrical, instrumentation and signaling equipment is intact.

(3) check whether the materials in the crushing cavity, if there are bulk material crushing chamber must be removed before starting.

(4) Check the eccentric position of the eccentric shaft, when the eccentric shaft at the lower center of rotation, the application such as cranes and winches driven wheel

rotation center of the eccentric shaft to the upper part to start later. With two motor-driven China Vibrating Screen, because of its large starting torque can be started directly.

(5) Check the fuel storage tank lip, fuel shortage should replenish. By car, you should first start the pump until the return pipe with the oil return (usually takes 5-10min),

oil pressure gauge in the normal operating pressure value, in order to start the crusher. In the case of low winter temperatures, then start the pump should be preceded by an

aggregate oil heater switch, so that the oil is preheated to 15-20 ℃ and then start the pump.

2) up and running in the Handling Precautions

(A) prepare work, should be required to drive sequential operation. Start the main motor ammeter should pay attention to the control cabinet, after 30-40s starting peak current,

the current will be reduced to the normal operating current value. During normal operation, the current should also pay attention to a longer time than the specified value.

(2) After the normal operation of the crusher, you can start feeding machine, and according to the size of the block material and crushers functioning, regulating the transfer

belt feeder to change the volume of feed. Typically, the material in the crushing chamber crushing chamber stack height should exceed the height 2/3. The diameter of the block

material is preferably not more than the inlet width of 50% -60%, when the maximum production capacity of the crusher. When feeding larger blocks, it will cause congestion,

affecting the normal production.

(3) To prevent metal objects (such as shovel teeth, track shoes, drills, etc.) into the crusher, in order to avoid damage to the machine, as they pass through the crusher, you

should immediately notify the next post operator promptly removed to prevent access to the second level crushing system and cause an accident.

(4) When the automatic tripping electrical equipment, if unexplained, non-forcible consecutive starts.

(5) the inspection found the tour does not sound normal machine must stop treatment failure, should immediately stop feeding stalled until all the material in the crushing

chamber is discharged, and then stop the main motor, cut off the power and check processing.

3) Stop Precautions

(A) order the production process must stop, first stop the feeder until all the broken material discharged before stopping crushers and conveyors. Allowed to deposit material

crushing cavity, so as not to create difficulties for the next start.

(2) must be in the crusher completely stopped, in order to stop the oil pumps and cooling system. Cooling water should be let go in the winter, to prevent cracking the bearing.

2, inspection and maintenance

1) Check the bearing temperature, bearing temperature does not exceed the general control 60 ℃ (bearing no more than 70 ℃). In the case of the thermometer is not installed,

the available surface of the thermometer to measure the surface temperature of the bearing shell.

2) Check the lubrication system and water cooling system, oil leakage, water leakage, pump running sound and vibration.

3) Check the wear of machine parts and fastening connectors whether there is loosening.

4) regular replacement of lubricants, cleaning lubrication filter.

Solve jaw crusher vibrating one way

A 900 × 1200 jaw crusher for mobile screening plant limestone in the installation and commissioning, we found that the aircraft empty runs, 16t heavy jaw swinging force larger, causing the

thrust plate seat on the impact force is adjusted large, has a great body and the base felt. The thrust plate and the thrust plate between the pad wear is more than normal

level. By adjusting the tension spring, the situation is not improved.
Thus, we add a piece between the adjustment plate and the sheet conveying belt of the same size as the cushion. Power operation, the empty body and foundation felt basically

eliminated, the belt load operation, only in large blocks of limestone broken only when some felt, but much smaller than sand vibrating screen before, cushioning effect is obvious. After running a

station class and found easy adjustment plate channeling them in the adjustment plate above it after welding the two plates, eliminating the problem of adjusting plate sprang.
Through a period of operation, the conveyor belt is still intact, indicating that this digestion vibration method is feasible.

Complex swing jaw crusher

How it works:
Moving jaw hanging in the eccentric shaft directly, by the favor of a direct drive shaft. Bottom jaw thrust plate supported by a rear wall of the rack. When the eccentric shaft

rotates, the moving jaw on one hand, fixed jaw for reciprocating swing, but also to a great extent along the fixed jaw up and down movement. Every movable jaw

Point trajectory not the same, the top of the eccentric shaft movement was constrained, close to the arc trajectory, the middle part of the movable jaw, the trajectory of the

elliptic curve, the more elliptical the closer the bottom long side. As these crusher work, each point on the moving jaw trajectory than

More complex, so called complex swing coal screening machine, referred to as complex pendulum jaw crusher (broken jaw).

Compound pendulum jaw crusher advantages and disadvantages:
(A) compound pendulum jaw crusher mobile jaw movement in the upper and lower ends of sync, alternately crushing and nesting, and thus power consumption evenly.
(2) vertical stroke moving jaw is relatively large, which for nesting, especially sticky and wet materials discharged beneficial.
(3) and a simple pendulum jaw crusher compared to the relatively simple structure, light compact, high production capacity.
(4) Since the movable jaw vertical stroke is large, only by extruding the material, but also by part of the grinding stripping effect, increasing the material over Mobile crushing plant, thus

increasing the energy consumption, large dust is generated, jaw plate relatively easy to wear.
(5) compound pendulum jaw crusher in the crushing of materials when moving jaw under immense pressure plot, acting directly on the eccentric shaft. At present such crushers are

made of medium and small.

Other forms of jaw crusher

1 Mixed swing-type (mixed pendulum type) jaw crusher
In order to overcome the simple pendulum jaw crusher and compound pendulum jaw crusher shortcomings, has been mixed trial pendulum Mining vibrating screen, it works: moving jaw and common

security in the eccentric shaft connecting rod, connecting rod head mounted on the eccentric shaft in the middle, and the two axes of the moving jaw is mounted on the rod shell

sides of the head.

Two thrust plate is still supported on the movable jaw and the lower end of the connecting rod and the rear wall of the rack. Moving jaw trajectory of each point is oval with

its major axis inclined in the direction towards the discharge, which makes the material forward, and the material toward the discharge port, improving the discharge conditions,

and improve the production capacity of the crusher

. While moving jaw bottom horizontal swing and vertical swing ratio is a ratio of 0.8, which surpasses compound pendulum jaw crusher reasonable, can reduce the wear of the tooth

plate. Since moving jaw and connecting rod are hanging in the eccentric shaft, the eccentric shaft and the bearing load is large, poor working conditions, easily damaged

. Same structure is also more complex, although the domestic mining machinery manufacturers have made about hybrid swing-type vibration screen, are due to the above reasons are not

promoted.
(2) crushing jaw crusher (thin broken)
The machine is simple pendulum, compound pendulum jaw crusher has been improved, the use of a number of movable jaw and a number of eccentric eccentric shaft structure composed

of columns, running through each of the movable jaw were crushed materials, thereby reducing machine load, and easy to start, running more stable, low energy consumption.

Currently

There pendulum-type crushing jaw crusher and crushing simple pendulum jaw crusher, the crusher working principle is the same prototype, but the length of the inlet increases,

the reduction ratio of up to 5 to 8. This type of fragmentation functions crushing compression strength not more than 250MPa / cm 2 of ores and rocks. Its processing power (

The machine calibration) is crushing medium hardness ores, rocks, loose density 1.6t/m3 prevail

Double roll crusher maintenance and safety technology

Maintenance of the machine is an extremely important regular work, it should be extremely closely with operations and maintenance, etc., should be full-time personnel on duty

checks.
(A) the maintenance of the machine:
1, the bearing
crushing plant bearing shoulder the entire load of the machine, so good lubrication for the bearing life of a great relationship, it directly affects the life of the machine and the

operation rate, which requires injection of lubricating oil must be clean, seal must be good, the machine The main oiling Office (1) transfer

Dynamic bearing (2) roller bearing (3) All gear (4) activities bearing, sliding plane.
2, the newly installed tires prone to loosening must always be checked.
3, pay attention to all parts of the machine is working properly.
4, pay attention to check the wear parts wear, and pay attention to replacement of worn parts.
5, put the event the device chassis plane should go out dust and other materials in order to avoid the machine encounters can not be broken material activities bearings can not

move on the bottom shelf, resulting in a serious accident.
6, the bearing temperature rise, the coal vibrating screen reasons should be eliminated immediately stopped and checked.
7, turning gears in operation should be immediately stopped if the impact of the sound check and eliminate

Crusher steel body and welded body distinction

Crusher same product the same model, the quality is not the same. Crusher into the body and welded steel body, cast steel body is called coal crushing plant entire body is one, steel

castings directly out of the body are one because it is such a device therefore quite durable,

A very long life. The welded steel body is composed by the multi-block, and then manually welded together, so that a much shorter service life of equipment. Welded steel body

and the body in the price gap is large, cast steel body price is relatively high, but the price is much lower welding body. A

Share price of a stock, here to remind you not to be stone feeding machine fooled by the manufacturer's offer, although some manufacturers give you the quoted prices are low, but the quality is

certainly not. In fact, distinguish the difference is very simple, you more consultation several manufacturers, and then listen to their offer, the regular manufacturers offer

Relatively high, while those small plants at much lower prices, the price is too low, or advise you not to buy. Here for everyone to look at the body and welded steel body