The cause and solution of the cone breaking fault!

                                                      

The occurrence of cone breakage is often caused by some sudden failures in the equipment, which seriously affects the normal production, and also reduces the service life of equipment and components. The three major phenomena of cone-breaking are as follows:

If the conical broken feed is too much, or the feeding property does not meet the requirements, it may cause the cone to break the material, so that the cone breaking working current is too large, the circuit automatically protects and stops the machine, and even the cone may be broken and forced to stop. situation.

When there is iron ore or other non-decomposable material entering the cone breaking chamber, it will also cause the cone to break the material and even the equipment to be stuck.

Improper use of the cone is one of the main causes of spindle fracture. For example, in order to achieve the required discharge fineness, the discharge opening is continuously tightened, and the unbreakable material enters the crushing chamber, causing a clear impact on the spindle, resulting in a cone-breaking spindle. The break is stuck.

On the other hand, when the cone is broken for a long period of time, although there is an overload protection device, the damage to the equipment cannot be completely avoided, and the spindle is prone to breakage and the device is stuck.

When the cone breaks the load, the lock sleeve will rotate according to the pressure loss caused by the hydraulic station. If the operator does not find and handle it in time, it will cause the adjustment sleeve to die, which will cause the cone to stop.

The cause of the adjustment sleeve jam may be poor thread lubrication, adjustment of the cap seal or dust cover seal wear, adjustment sleeve and support sleeve thread scratches, or cone breakage for a long time overload work.

The lining is an important part of the cone breaking, and it is also the main wear-resistant part of the cone. How to reduce liner wear is a problem that many users are very concerned about:

Loose lining can cause relative motion between the lining and the cone body, which increases wear. Therefore, the soft metal gasket can be padded between the lining plate and the cone, and bolted to ensure the flush between the two, and the breakage or wear caused by the looseness of the lining plate can be reduced.

Improve the stress state of the lining. In order to make the lining plate evenly stressed, it is often plastically precipitated between the lining plate and the cone, such as lead plate, aluminum plate, zinc alloy plate, low carbon steel plate or cement mortar to ensure the lining and cone. Closely integrated.

During the operation of the cone breaking, it should be noted that the materials in the equipment must meet the crushing requirements. It is strictly forbidden to be too hard, too high in moisture or other non-crushed materials to enter the crushing chamber, otherwise the cone-breaking material and the liner will be seriously worn. malfunction.

If the feed amount of the cone is not adjusted in time, the ore will directly collide with the lining, causing the wear of the lining to be intensified. Therefore, it is necessary to ensure that the ore enters the crushing chamber uniformly and continuously.

If the cone is broken for a long period of time, the liner will be overloaded for a long time. Therefore, the equipment should be prevented from overloading for a long time, the surface stress of the lining should be reduced, and appropriate fitting clearance should be selected to reduce the fatigue wear of the lining.

If the operating temperature of the cone is high, the liner will be plastically deformed under the impact and grinding of the material. Therefore, the lubrication of the equipment should be done to reduce the phenomenon of excessive temperature rise of the equipment and reduce the plastic deformation of the liner.

Cone leaking oil will directly affect the lubrication of the equipment, resulting in equipment failure due to poor lubrication, so equipment leakage should be reduced in production. You can start from the following aspects:

The design of the seal structure is related to the effect of the seal and the life of the seal. The sealing effect of the 0-ring seal depends on the correct size of the mounting groove. The sealing ring installation groove is too deep, the compression amount of the sealing ring is not enough, and the sealing effect is not obtained. Therefore, the sealing structure should be reasonably designed and processed to ensure the sealing performance of the sealing device is good.

Install the sealing ring correctly to ensure that the equipment is well sealed. Do not install the seal with an angled tool to prevent scratching the seal and avoid stretching it to a permanently deformed position. Lubricate the seal ring properly for installation.

Regularly check whether the filter is clogged or damaged, and replace the oil circuit that has been kinked to ensure the smoothness of the return line. At the same time, attention should be paid to cleaning the ventilating cover on the side of the conical drive shaft frame, and purging the long core hole of the ventilating cover on the drive shaft frame with compressed air.

Check if the gap between the inner wall of the main tank oil tank and the oil retaining ring on the counterweight is reasonable, and prevent the oil splashed between the oil tanks from forming each other to form an oil seal, which will cause the cone to leak oil.

Due to the dust generated during the cone breaking work, it is generally necessary to have a corresponding sealing device, but the sealing failure may occur during production. The reasons for the seal failure are as follows: