how to build a jaw crusher
how to build a jaw crusher
Blog Article
Manufacturing a jaw crusher is a complex process involving mechanical design, material selection, processing, manufacturing and assembly. The following are the main steps and key technical points for manufacturing a jaw crusher:
1. Design and planning
Before manufacturing, detailed design and planning are required, including:
Determine the specification parameters: According to the hardness and particle size requirements of the crushed material, determine the crusher's processing capacity, feed port size, discharge port adjustment range, motor power and other parameters.
Structural design: Design the overall structure of the crusher, including the frame, movable jaw, fixed jaw, eccentric shaft, connecting rod, toggle plate, adjustment device and other components.
Motion analysis: Analyze the motion trajectory of the movable jaw to ensure that it can crush materials efficiently.
Material selection: Select suitable wear-resistant materials (such as high manganese steel) for the manufacture of jaw plates and other easily worn parts.
2. Material preparation
Prepare the following main materials according to the design requirements:
Frame: Usually welded with high-strength steel plates.
Jaw plate: Made of high manganese steel (ZGMn13) or other wear-resistant alloy steels.
Eccentric shaft: Forged from high-quality alloy steel (such as 40Cr).
Bearing: Use rolling bearings with high load capacity.
Other parts: such as connecting rods, elbow plates, springs, etc., need to select appropriate materials according to the stress conditions.
3. Processing and manufacturing
(1) Frame manufacturing
Use steel plates for cutting and welding to ensure that the frame has sufficient strength and rigidity.
Perform flaw detection on the welding parts to ensure that there are no defects such as cracks and pores.
(2) Jaw plate manufacturing
Use high manganese steel to cast or forge the jaw plate.
Heat treat the surface of the jaw plate to improve its hardness and wear resistance.
Process the mounting holes and contact surfaces of the jaw plate to ensure its matching accuracy with the movable jaw and fixed jaw.
(3) Eccentric shaft manufacturing
Use alloy steel to forge the eccentric shaft blank.
Perform turning, milling, grinding and other processing to ensure the dimensional accuracy and surface finish of the shaft.
Heat treat the eccentric shaft to improve its strength and wear resistance.
(4) Processing of other parts
Connecting rods, elbow plates and other parts need to be processed according to the design drawings to ensure dimensional accuracy and assembly requirements.
Standard parts such as springs can be purchased directly, but they must meet the design requirements.
4. Assembly and commissioning
(1) Assembly of parts
Assemble the eccentric shaft, bearings, movable jaw, connecting rod and other parts onto the frame.
Install the fixed jaw and adjustment device.
Check the clearance between the parts to ensure smooth movement.
(2) Installation of lubrication system
Install the lubrication oil circuit and oil pump to ensure that the bearings and moving parts are fully lubricated.
(3) Installation of electrical system
Install the motor, control cabinet and electrical circuit to ensure that the equipment can operate normally.
(4) Commissioning
No-load test run: Check whether the equipment runs smoothly and whether there is any abnormal vibration or noise.
Load test run: Add a small amount of material for trial crushing to check the crushing effect and equipment operation status.
Adjust the size of the discharge port to ensure that the material particle size meets the requirements.
5. Surface treatment and painting
Derust and sandblast the outer surface of the equipment.
Spray anti-rust paint and topcoat to improve the corrosion resistance and aesthetics of the equipment.
6. Quality inspection
Dimension inspection: Check whether the dimensions of each component meet the design requirements.
Performance inspection: Test the equipment's processing capacity, crushing ratio, energy consumption and other performance indicators.
Safety inspection: Check whether the equipment's safety protection devices are complete and whether the operation is safe and reliable.
7. Packaging and delivery
Pack the equipment to prevent damage during transportation.
Provide equipment instructions, maintenance manuals and related accessories.
Key technical points
Material selection: Key components such as jaw plates and eccentric shafts must be made of high-strength and wear-resistant materials.
Processing accuracy: Ensure the dimensional accuracy and matching clearance of each component to avoid jamming or wear during equipment operation.
Heat treatment process: Heat treat key components to improve their hardness and wear resistance.
Assembly quality: Strictly assemble in accordance with design requirements to ensure smooth and reliable operation of the equipment.
Debugging and optimization: Through trial operation and debugging, optimize equipment performance to ensure that user needs are met.
Manufacturing equipment and tools
Processing equipment: lathes, milling machines, grinders, drilling machines, welding equipment, etc.
Detection tools: calipers, micrometers, hardness testers, flaw detectors, etc.
Lifting equipment: used for lifting and assembly of large components.
Summary
Manufacturing jaw crushers requires the comprehensive use of mechanical design, material science, processing and manufacturing, assembly and debugging technologies to ensure that the equipment is efficient, reliable and durable. Through strict quality control and optimized design, jaw crushers that meet the needs of different industries can be produced.
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Article Title:how to build a jaw crusher
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