As we all know, large-scale Construction Waste Crusher is widely used in mining, construction, cement, chemical, metallurgical and other industries, and often encounter many problems in the production process. After nearly 20 years of production experience, I have summarized some common buildings to counter the common failures and researched the corresponding solutions. Let's share with you:
First, mechanical noise failure
Large buildings are impact during operation, and a very intense knocking sound is generated inside the crushing chamber. First of all, the building should be shut down immediately to break the power supply, stop and clean the crushing chamber; secondly, the building will use the counter-attack to generate huge vibration during the operation, check whether there is any material that cannot be broken into the crushing chamber; then, check the lining The tightening condition and the gap between the hammer and the lining plate confirm whether the wear lining plate is detached.
Second, the discharge granularity is too large
The large-scale Construction Waste Crusher is too large in the process of discharging. Firstly, the front and rear counter-rack clearances should be adjusted or the worn-out linings and hammers should be replaced. In addition, the position of the counter-attacks can be adjusted to make the two sides and the frame lining Achieve relative clearance to ensure discharge particle size.
Third, the bearing wear is serious
Due to the long-term counter-attack of large-scale buildings, the long-term operation under the harsh conditions of large impact load, large vibration, high speed, and dust has aggravated the wear of the rotor bearings and affected the smooth production. Bearing damage is mainly caused by unbalanced installation of the rotor or bearing, aging of the bearing seal, ash powder after wear, local stress during high-speed operation of the rotor, insufficient bearing lubrication and other factors. Restricted by the working environment and working mode, it is required to adopt the specified matching factor; when installing, pay attention to the balanced installation of the rotor. Generally, a bearing with strong bearing capacity and good self-aligning performance is used as the rotor bearing. The calculated life of the selected bearing should be It is suitable for 5000-10000h. The overheating of large buildings with counter-attacks is mainly caused by insufficient grease, excessive grease, deterioration of grease, and bearing damage. First, check whether the grease is sufficient. Regularly add a proper amount of grease. The standard grease should be filled with 50% of the bearing housing volume. Secondly, pay attention to the daily cleaning and maintenance of the bearing and replace the grease. Replace the bearing if it is severely worn.
Fourth, the hammer is seriously worn
The hammer head is a wearable part of a large building that is impact. After a certain period of work, the working surface of the hammer head will be damaged, and the surface shape will change. At this time, the gap between the hammer head and the lining plate (generally required to be less than 10 mm) As the diameter increases, the friction generated by each other is greatly reduced, which is the main form of wear failure of the hammer. The damage of the hammer is inevitable, only to extend the life of the hammer as much as possible. 1, to avoid metal lumps and other debris into the building to counter damage to damage the hammer or lining; 2, the use of wear-resistant materials, such as high carbon manganese alloy cast steel or cast white iron and other high wear-resistant materials As the hammer material, improve the wear resistance coefficient of the hammer head and reduce the number of replacements; 3. It is found that the hammer head wears out seriously, and should be replaced or repaired in time to ensure the normal work of building counter-attack.
Five, belt failure
There are many reasons for the combustion of the transmission belt. For example, the belt runs continuously for a long time, causing wear and heat to burn; the belt is not tight enough, and the friction is heated and burned; when the building uses a counter-attack to break the overload, the belt is slipped and rubbed to burn. First of all, it is necessary to regularly check the use of the belt and find that the looseness of the belt is adjusted by the screw when the belt is loose. Secondly, the ventilation equipment is added to improve the heat dissipation of the belt and the motor.