When replacing the toothed roller of the sizer crusher, the following matters need to be noted.
1. Preparation before replacement
1. Determine the appropriate toothed roller model
Carefully check the type, specifications and technical parameters of the original toothed rollers to ensure that the new toothed rollers are exactly matched to the crusher. Different types of crushing equipment may require toothed rollers of different sizes, materials and tooth shapes, and the wrong choice can affect the performance and service life of the equipment.
You can refer to the equipment manual, consult the manufacturer or professional and technical personnel to determine the correct toothed roller model.
2. Prepare the necessary tools and equipment
Prepare the tools needed to replace the toothed rollers, such as wrenches, jacks, cranes, etc. Ensure that the tool is of good quality and performance to meet the needs of the replacement job.
Check the safety and reliability of large equipment such as cranes to ensure safe operation during the replacement process.
3. Arrange suitable workers
Changing the toothed rollers is a complex task that requires both experienced technicians and operators. Ensure that workers are familiar with the replacement process and safety precautions, and have the appropriate skills and qualifications.
Clarify the division of responsibilities of each operator to ensure that the replacement work is carried out in an orderly manner.
2. Precautions in the replacement process
1. Safety first
Before replacing the toothed roller, the power supply of the crusher must be cut off, and warning signs such as "no closing" must be hung to prevent misoperation from causing the equipment to start and cause casualties.
Workers should wear personal protective equipment, such as helmets, safety shoes, gloves, etc., to ensure their own safety.
2. Properly disassemble the old toothed rollers
According to the requirements of the equipment manual, the old toothed roller is disassembled in the correct way. Generally speaking, it is necessary to remove the connecting parts first, such as bearing housings, couplings, etc., and then use equipment such as cranes to slowly lift the old toothed rollers out.
During the disassembly process, care should be taken to protect other parts of the equipment to avoid damage caused by improper operation. For example, when disassembling housings, care should be taken not to damage the bearings and seals.
3. Install the new toothed rollers
Before installing the new toothed rollers, the installation parts of the equipment should be cleaned and inspected to ensure that there are no debris and damage.
Slowly lift the new toothed rollers into the mounting position, install the connecting parts in the correct order, and tighten the bolts. During the installation process, it is necessary to ensure that the installation position of the toothed roller is accurate and the cooperation with other components is good.
After the installation is completed, the toothed roller should be adjusted to ensure that its gap, parallelism and other parameters meet the requirements of the equipment. Measurements and adjustments can be made using tools such as feeler gauges, micrometers, etc.
4. Inspection and testing
After replacing the toothed roller, the equipment should be fully inspected, including the fastening of the connection parts, the working status of the lubrication system, the connection of the electrical system, etc. Ensure that all parts of the equipment are installed firmly and operate properly.
No-load tests and load tests are carried out to check the working condition of the new toothed rollers. During the no-load test, observe whether the operation of the toothed roller is stable, and whether there is abnormal noise and vibration; During the load test, gradually increase the feed volume and observe the crushing effect and operating status of the equipment. If a problem is found, it should be adjusted and dealt with in a timely manner.
3. Maintenance after replacement
1. Lubrication and maintenance
Lubricate and maintain the bearings, gears and other key parts of the new toothed rollers, and add lubricating oil or grease according to the specified lubrication interval and filling amount.
Check the working status of the lubrication system to ensure that the oil circuit is smooth and there is no leakage.
2. Operational monitoring
During the operation of the equipment, it is necessary to pay close attention to the working condition of the new toothed roller, and regularly check its wear degree and operating status. If an abnormal situation is found, it is necessary to stop the machine in time for inspection, find out the cause and deal with it.
The use of the new toothed rollers is recorded, including the running time, the amount of crushed material, wear and tear, etc., to provide a reference for future maintenance and replacement.
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