Hydraulic Pusher

The working status of the pusher in the incinerator can be detected in the following ways:

1. Operation parameter monitoring: - Speed monitoring: Install a speed sensor on the drive device or moving parts of the pusher to measure the push speed in real time. The speed sensor can be a rotary encoder or an electromagnetic speed sensor. Under normal circumstances, the push speed should remain stable within the design range. If the speed becomes abnormally slow, it may be due to garbage blockage, drive device failure, or mechanical component wear; if the speed becomes abnormally fast, it may result from a control system failure or the pusher losing load (e.g., the push plate being disconnected from the garbage). - Displacement monitoring: Monitor the displacement of the pusher's push plate by installing a displacement sensor, such as a linear displacement sensor or a travel switch. This allows for accurate assessment of whether the stroke of each push meets requirements and if the push plate can reach the specified position smoothly. Insufficient displacement may indicate excessive garbage resistance or mechanical jamming, while exceeding the range may signal sensor failure or control system issues. - Thrust monitoring: Use a pressure sensor or force sensor installed on the hydraulic cylinder or push mechanism to monitor the thrust of the pusher. Changes in the composition, humidity, or accumulation of garbage will affect the required thrust. If thrust increases abnormally, it may be due to large hard objects in the garbage or tight packing; if thrust decreases abnormally, it could indicate hydraulic cylinder leakage or reduced drive power.

2. Visual monitoring: - Install cameras: Place high-definition cameras at the feed inlet of the incinerator and the pusher's working area to monitor its operation in real time. Operators can visually observe the push plate's movement, the pushing of garbage, and any foreign objects or blockages through the monitoring screen. This method allows for timely detection of mechanical failures or garbage blockages, though cameras need regular cleaning and maintenance to ensure image quality. - Infrared thermal imaging monitoring: Utilize infrared thermal imaging technology to monitor the pusher. The pusher generates heat during operation, and an infrared thermal imager can detect the temperature distribution of its components. If a part's temperature rises abnormally, it may indicate friction, overload, or potential faults; if the temperature is too low, it may suggest a fault in the heating device or poor contact with the garbage.

3. Sound monitoring: - Microphone monitoring: Install a microphone near the pusher to collect sound signals during operation. A normally operating pusher will emit sound at a certain frequency and intensity. When it fails, the sound may change, producing abnormal noise, vibration, or friction. By analyzing the sound signal, it can be determined whether the pusher is functioning properly. This method can detect potential failures early, but accurate analysis is required to avoid misjudgments.

4. Current monitoring: Install a current sensor on the drive motor or hydraulic system motor to monitor the working current. When the pusher operates normally, the motor current fluctuates within a certain range; if resistance increases or there is mechanical jamming, the current will significantly rise; if the motor fails or the drive system is abnormal, the current may drop or fluctuate unusually. Monitoring and analyzing the current signal can reveal electrical or mechanical failures of the pusher in a timely manner.

5. Regular inspection and maintenance: - Manual inspection: Operators should regularly conduct on-site inspections of the pusher to check its appearance, connection parts, and lubrication conditions. Inspect for push plate deformation, wear, or damage, loose connection bolts, and smooth guide rails. The pusher can also be manually operated to check for flexibility and any jamming. - Shutdown inspection: During incinerator shutdown and maintenance, a full inspection of the pusher should be conducted. This includes disassembling parts, checking the internal mechanical structure, transmission parts, seals, etc., replacing severely worn parts, and maintaining the lubrication system.