Mobile crusher are widely used in mines, quarries, construction waste treatment and engineering construction projects. Compared with fixed production lines, mobile crushers feature high integration, flexible relocation and rapid commissioning on-site. Correct startup operation is not only related to the service life of equipment, but also directly affects on-site personnel safety. This article systematically introduces the standard startup procedures and precautions for mobile crushers, applicable to crawler or wheeled mobile crushing stations.
I. Pre-start Inspection
Before pressing the start button, the following inspection items must be completed:
1. Overall Equipment Inspection
Check for personnel or obstacles around and inside the equipment.
Confirm all safety guards and railings are in place and firmly fixed.
Inspect key parts such as conveyor belts, vibrating screens and crushing chambers for stuck objects or residual materials.
Ensure hydraulic outriggers or supporting devices are properly retracted or supported in accordance with operating requirements.
2. Lubrication and Oil Level Check
Check the engine oil level of diesel-powered models or electric motor oil condition of electric-driven equipment.
Inspect the grease condition of the main crushing bearing and ensure sufficient grease in the lubrication system.
For hydraulic drive or auxiliary systems, check the hydraulic oil level and oil quality.
Verify the coolant liquid level for diesel engine models.
3. Electrical and Control System
Check if all indicator lights and instruments on the control panel work normally.
Confirm the emergency stop button has been reset.
Inspect cable connections for electric-driven equipment or battery power for diesel models.
Check signal connection between the remote control or control cabinet and the main unit.
4. Belt and Tensioning Device
Check the tension degree of engine or motor belts.
Inspect wear and tension conditions of crusher drive belts (if equipped).
Check conveyor belts for deviation tendency or damage.
II. Standard Startup Process
Mobile crushers generally adopt graded sequential startup, starting from downstream equipment to upstream units to prevent material blockage.
Typical startup steps (taking diesel-electric hybrid or full hydraulic driven crawler crushing station as an example):
Step 1: Start the engine or connect the main power supply
Diesel model: Turn the start key to "ON". After the preheating indicator goes out, turn to "START" to start the engine and keep idling for 3-5 minutes.
Electric model: Close the main circuit breaker and check if the voltage of the control cabinet is within the rated range.
Step 2: Start the hydraulic system (if applicable)
Some crawler mobile crushers need to start the hydraulic pump motor or hydraulic oil radiator first to support auxiliary operations such as crawler walking, hopper folding and discharge opening adjustment.
Step 3: Launch downstream conveying equipment
Start the main discharge conveyor belt first.
Then start the side discharge conveyor belt (if equipped).
Next, turn on the vibrating screen (for integrated screening crushing stations).
Finally, activate the undersize or return material conveyor belt.
Step 4: Start the main crushing unit
Make sure no materials remain in the crushing chamber.
Press the crusher start button and monitor the starting current, which should quickly drop to the no-load current.
Listen carefully for abnormal noise or vibration during operation.
Step 5: Activate the feeding system
Start the vibrating feeder or belt feeder lastly.
Adjust the feeding speed to the lowest gear to prepare for material feeding.
Step 6: Put into formal production
After all equipment runs under no-load for 1-2 minutes with normal operating parameters.
Use an excavator or loader to feed materials into the hopper with small and uniform feeding at the initial stage.
Gradually increase the feeding volume to 60%-80% of the designed capacity, and monitor crusher load and discharge conditions.
Raise to full load until the entire system runs stably.
III. Key Precautions During Startup
No-load Startup Principle: All crushers, vibrating screens and conveyor belts must be started under no-load conditions. On-load startup will cause motor overload or mechanical damage.
Metal Detection and Iron Removal: If the equipment is equipped with a metal detector or iron remover at the front end, ensure it is started synchronously and operates normally to prevent iron parts from entering the crushing chamber.
Starting Current Monitoring: The peak starting current of the main crusher can reach 5-7 times of the rated current. Shut down the equipment immediately for inspection if the current cannot drop in a short time or abnormal noise occurs.
Reverse Operation Prohibition: Confirm the correct rotation direction marked by arrows before startup. Reverse rotation will reduce crushing efficiency and even damage core components.
Local and Remote Switching: Clarify the current operation mode (local control cabinet or wireless remote control) to avoid misoperation.
IV. Common Startup Faults and Troubleshooting
Phenomenon, Possible Causes, Preliminary Solutions
No response after starting: Emergency stop pressed, power failure, fuse blown — Reset emergency stop button, check main breaker and control fuse.
Tripping immediately after startup: Motor or circuit short circuit, material jamming in crushing chamber — Inspect cable insulation and clean the crushing chamber.
Excessive crusher vibration: Loose base bolts, uneven wear of hammers or jaw plates — Stop the machine to fasten bolts and check wear parts.
>Difficult engine startup: Insufficient fuel, low battery power, low temperature environment — Refuel, check battery and use preheating device.
>Malfunction of hydraulic system: Low oil level, hydraulic pump not started, safety valve not reset — Check oil level and confirm hydraulic pump operating status.
V. Safety Operation Reminders
Sound the horn or send sound and light warnings before startup, and confirm no personnel around the equipment before operation.
It is strictly forbidden for personnel to approach dangerous areas such as feed inlets, crushing chambers and conveyor rollers during equipment operation.
For the first startup or commissioning after maintenance, use jog operation to confirm correct rotation direction.
Operators shall not leave the control position without permission during equipment operation.
Press the emergency stop button immediately in case of abnormalities, and no restart is allowed until hidden dangers are eliminated.
VI. Brief Description of Startup Differences for Different Power Types
Pure Electric Mobile Crushing Station: On-site generator with matched capacity or external municipal power supply is required. Pay attention to the voltage drop when multiple motors start simultaneously, and soft start or star-delta starting mode is recommended.
Diesel Engine Driven Type: Focus on fuel level, battery voltage and ambient temperature. Preheating equipment is required in low-temperature areas. Idle warming up is necessary before loading materials after startup.
Diesel-electric Hybrid Driven Type: The engine drives the generator to supply power for each motor. Start the engine first, and start each actuator in order after the voltage stabilizes.
Conclusion
Correct startup of mobile crushers is the first step to ensure efficient and safe operation. Operators must receive systematic pre-job training, be familiar with the equipment operation manual, and strictly follow the standard process of "pre-start inspection — graded startup — no-load test run — loaded production". Differences exist in electrical logic and hydraulic systems of mobile crushers from different brands and models, so please refer to the official equipment manual as the final basis.
Mobile Crusher Manufacturers
In global mining exploitation, infrastructure construction, construction waste recycling and other engineering fields, mobile crushers have become the first choice for more and more project owners due to their flexibility, high efficiency, rapid relocation and on-site quick production. Compared with traditional fixed production lines, mobile crushers eliminate complicated civil engineering works, greatly shorten the construction cycle, and are especially suitable for multi-site and short-term engineering operations.
Among numerous mobile crusher manufacturers, Chinese manufacturing is occupying an increasingly important position in the global market with continuously upgraded technology, complete supply chain system and outstanding cost-performance advantages. Shanghai Dongmeng Road & Bridge Machinery Co., Ltd. is a representative enterprise in this trend.
I. China's Mobile Crusher Manufacturing: From Follower to Leader
In recent years, China's mobile crusher manufacturing industry has achieved leapfrog development from simple imitation to independent innovation. Domestic manufacturers have made breakthroughs in core technologies such as heavy-duty rotor design, hydraulic system integration and intelligent control, and product performance is close to the international advanced level. Meanwhile, relying on China's complete industrial supporting system, Chinese-made mobile crushers maintain high quality with obvious cost advantages, becoming an important choice for global customers seeking cost-effective equipment.
II. Shanghai Dongmeng: Powerful Manufacturer of Mobile Crushers in China
Enterprise Strength and Qualifications
Shanghai Dongmeng Road & Bridge Machinery Co., Ltd. is a high-tech enterprise integrating R&D, production, sales and service of crawler and fixed crushing and screening equipment. Located in Fengxian District, Shanghai, the company covers a standardized factory area of over 20,000 square meters, with more than 200 employees including over 30 senior and intermediate technical personnel, and has passed ISO9001:2015 international quality system certification.
As one of the earliest professional manufacturers engaged in the R&D and production of crawler mobile crushing stations in Shanghai, Shanghai Dongmeng is not only an equipment manufacturer, but also a one-stop solution provider for crushing and screening projects, offering complete solutions from single machines to full production lines.
Global Market Layout
Shanghai Dongmeng has a professional international marketing department, and its products have been exported to more than 160 countries and regions including Southeast Asia, Africa, Europe, Central Asia and the Middle East. It has become one of China's major production and export bases for crushing, screening and sand making equipment, and has been selected into the supplier list of central state-owned enterprises, establishing long-term cooperative relations with well-known enterprises such as China National Petroleum, XCMG, China Railway Construction Heavy Industry, Sinohydro and China Railway No.2 Engineering Group.
III. Core Advantages of Shanghai Dongmeng Mobile Crushers
1. Crawler Mobile Jaw Crushing Station
Shanghai Dongmeng crawler mobile jaw crushing station adopts hydraulic driven crawlers for stable traveling, adapting to various complex working conditions.
Core Highlights:
High-strength Structure: Modular design without welding, featuring light weight, strong fatigue resistance and impact resistance.
>Efficient Crushing: Adopts symmetrical V-shaped crushing cavity with deep cavity, small nip angle, large stroke, high processing capacity, low energy consumption and large crushing ratio.
>Intelligent Operation: Equipped with wireless remote control, supporting independent loading and unloading from flatbed trailers by a single operator for rapid relocation.
>Convenient Maintenance: Wedge-type discharge opening adjustment (mechanical or hydraulic) saves downtime; labyrinth sealing and centralized lubrication system effectively prevent bearing grease pollution and ensure stable operation.
Technical Parameters (Model DMJ106):
Maximum Feeding Size: 630mm
Processing Capacity: 150-440 tons per hour
Overall Weight: 55-57 tons
2. Crawler Mobile Impact Crushing Station
The main unit of Shanghai Dongmeng mobile impact crushing station is equipped with heavy-duty rotors, large-capacity crushing cavities, thick impact plates and high-alloy wear-resistant hammers.
Core Highlights:
Large Crushing Ratio: Capable of crushing ores and rocks with compressive strength no more than 320MPa.
Excellent Aggregate Shape: Cubic finished products with low flaky content and no internal cracks, meeting high-grade aggregate standards.
Flexible Relocation: Intelligent wireless remote control and crawler self-propelled design for easy transportation.
Easy Maintenance: Hydraulic rear frame opening and foldable side discharge belt greatly facilitate daily inspection and repair.
3. Crawler Mobile Cone Crushing Station
Shanghai Dongmeng crawler mobile cone crushing station is equipped with multi-cylinder hydraulic cone crusher, integrating crushing technology, hydraulic technology and intelligent computer control.
Core Highlights:
Automatic Control System: Fully automatic crushing process control, one-key startup and advanced fault diagnosis function.
>Overload Protection: Realize iron passing protection and overload protection, with automatic wear compensation for liners.
Modular Design: Independent modular operation of lubrication and hydraulic systems with multiple protection functions for oil temperature, flow and pressure.
>Combined Operation: Matched with mobile screening stations of other models to form a multi-stage complete production line.
IV. Summary of Core Advantages
Crushing Performance: Large crushing ratio, high output and high-quality cubic aggregate.
Mobility: Crawler self-propelled, wireless remote control, one-person transportation.
>Energy Saving & Environmental Protection: Diesel-electric hybrid drive for low energy consumption; covered conveyor belts to reduce dust emission.
>Simple Maintenance: Hydraulic opening device, modular structure and centralized lubrication.
>Strong Adaptability: Suitable for mines, quarries, construction waste treatment and other complex working conditions.
>Intelligent Upgrade: Full automatic operation, one-key startup and real-time fault self-diagnosis.
V. Application Fields
Mining and ore crushing, quarry aggregate production, urban construction waste recycling, highway, railway and bridge construction, tunnel muck processing, refractory materials and cement building materials industry.
VI. Why Choose Shanghai Dongmeng?
Profound Technical Accumulation: Over 30 years of industry experience, the earliest R&D manufacturer of crawler mobile crushers in Shanghai.
Complete Product Line: Full series of mobile crushing stations including jaw, impact and cone type to meet diverse material and capacity demands.
Reliable Quality Assurance: ISO9001 certified, modular structure and high-strength raw materials.
Global Service Network: Products exported to 160+ countries with professional international after-sales support.
High Cost Performance: Chinese local manufacturing cost with international quality standards.
Conclusion
p>In the global mobile crusher market, Chinese manufacturing is transforming from follower to parallel runner and even leader. With 30 years of technical accumulation, complete product matrix, reliable product quality and global service network, Shanghai Dongmeng Road & Bridge Machinery Co., Ltd. has become a trusted mobile crusher manufacturer for global clients.We provide professional customized solutions for hard rock jaw crushing, construction waste impact crushing and high-hardness material cone crushing projects.
Welcome to contact Shanghai Dongmeng Road & Bridge Machinery Co., Ltd. to obtain professional equipment selection suggestions and detailed quotations.
Shanghai Dongmeng Road & Bridge Machinery Co., Ltd. — Empowering Global Mining and Infrastructure with Chinese Intelligent Manufacturing
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