As the main component of the roller crusher, the roller shaft is also the most severely worn component. When the roller shaft of the roller crusher is worn, it needs to be inspected or even disassembled and replaced. So, how to complete the disassembly and installation of the roller crusher roller shaft? Crusher expert Hongxing Machinery has given a set of disassembly and assembly suggestions for your reference. The assembly parts on the roller shaft, the pulley, gear, flywheel, and wheel sleeve are fixed to the roller shaft through keys, and the rolling bearings are also mounted on the journal with corresponding fasteners, so the disassembly and installation process There are many aspects that require our attention.
1. Disassembly
Use special tools, such as screw screws or hydraulic jacking machines.
When necessary, the disassembly parts on the shaft can be disassembled by force after the surroundings are hot, or they can be directly driven out with a hammer. When driving out, corresponding protective measures must be taken to avoid damage to other available parts around it. damage.
Generally, the equipment parts can be disassembled after using the heating method. If they have not been disassembled yet, we can increase its temperature, but the temperature should not exceed degrees Celsius, otherwise excessive oxidation, annealing, etc. of the parts will occur, reducing or Damage the strength and life of the parts.
When disassembling the available rolling bearings, it is forbidden to knock the rolling bearings. We can use non-ferrous metal rods or pads with lower hardness to cushion the rolling bearings. The knocking force cannot be applied to the rolling elements and cages of the bearings to avoid Damage to bearings.
When heating the bearing, it should not exceed degrees Celsius and cause uneven heating to avoid bearing annealing and reducing hardness.
2. Installation
Press installation
Generally, the assembly of the shaft and the hole parts and the parts with small interference of the shaft hole parts are assembled by the pressure method. Shaft hole parts with a smaller diameter can be installed by hand hammer, sledge hammer, free hammer or drop hammer. If conditions permit, a hydraulic press can be used for installation. For shaft hole parts with a larger diameter, a large-tonnage hydraulic press should be used for press installation.
, hot assembly
The so-called hot assembly is to install the hole parts of the roller crusher by heating. This method is suitable for assembling parts with large diameter, large interference and high power.
, cold installation
Use coolant to cool and compress the shaft of the roller crusher. When the shaft diameter cools to a certain value, send the inner or outer parts to the mating surface and wait until the shaft diameter is cooled to a certain value. When it returns to normal temperature, the axis will be firmly fixed to the hole.
Zhengzhou Huayang Machinery Equipment Co., Ltd. specializes in the production of various crushing equipment. Its main products include various types of die plates, frames, jaw crushers, double-roller machines, hammer heads, double-roller skins, and edge crushers. Guard plate, vibrating screen, hammer crusher (production and processing) mainly produces high manganese steel double roller skin, tooth plate, hammer head, high hardness, and various mining crushing equipment. Various ball mill accessories, rotary kiln accessories, impact crusher accessories, dryer accessories, large ring gear, pinion gear, plate hammer, jaw plate, supporting double roller, tug wheel, rolling belt, double roller ring, coupling, eight holes Pads, liners, crushers and other accessories
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