Revamp coal mining machine, crusher roller tooth cutting operation process

Process, Technology, and Content Standards, Man-hours, Safety Precautions

1. Prepare Tools: 1. Prepare the tools according to the standard work order. Ensure that all tools are present and match the specifications used on-site. 0.2. Inspect the tools for any cracks or defects to prevent injury during use.

2 Safety Measures Development and Training 1. Develop technical measures in response to potential hazard sources during the maintenance process.

2. Organized relevant staff for training. 1. Technical measures are reasonable.

2. Through learning, have a clear understanding of the process and stages of the task. 0.8 Unchanged.

3 Park the coal machine in a suitable location: 1, close the main circuit breaker, verbally warn "start the coal machine" three times, and if there are no abnormalities, it can be started and driven.

2. Park the coal machinery on a flat area without water spray, slice support, or slope.

The placement of the trolley does not affect the operation of other equipment or personnel, while also meeting its own maintenance requirements. Before starting the coal machine, observe that there are no personnel working around the equipment.

2. The placement is not reasonable, posing potential safety hazards during operations.

Remove protective guards 1. Remove all protective guards in the work area and securely fasten them against the coal wall.

2. Adjust the frame gap, lock the frame.

Ensure that the supports within the work area are tightly fitted without any gaps or coal debris, and that there is no loose coal on the coal face. 0.2 1, Injury caused by loose coal on the coal face.

2. Coal spill between racks injures individual.

5. Power Off: Isolate and pull the main circuit breaker, press all emergency stop locks, and secure the circuit breaker.

Three machines experience power outage and are locked down; lockout and tagout is safe and reliable. 0.1 Unreliable lockout leads to others mistakenly starting the coal machine and the three machines, causing personal injury.

6 Clean coal and gangue from fuselage; remove large coal and gangue from the fuselage, upper and lower swing arms; clean large coal and gangue from fuselage; 0.3 Large gangue falls and injures person

7. Two workers coordinate to roll the drum to the position of the replacement cutter teeth, clearing coal inside the sleeve. Rotate the drum to an appropriate position for easy replacement. 0.2 Inappropriate positioning of personnel while rolling the drum causes injury.

8. Replacing the cutting teeth – Using a hammer and a pointed hammer to knock out the cutting teeth, and then installing new ones. The cutting teeth are properly installed and securely fastened with the spring clip. 0.1 Not wearing safety goggles resulted in flying metal debris causing injury.

9 Clean the site: Collect and dispose of worn-out teeth and tools; clean the teeth recycling and retrieve all tools. 0.1 Prevent ferrous materials from entering the system to avoid equipment damage.