releaseTime:2025-11-14 08:40:10source:Mu TiannumberOfPageViews:0
Before using a manual hoist for lifting and lowering operations, it is crucial to conduct a thorough inspection to ensure safety and prevent accidents. Here’s a detailed checklist of items to verify:
1. Hoist Structure & Integrity
Frame & Housing: Check for cracks, dents, or deformation in the hoist body. Ensure all components are securely attached.
Load Chain/Rope:
Inspect for kinks, twists, gouges, or excessive wear.
Verify the chain links are not stretched or distorted.
For wire ropes, check for broken strands or fraying.
Hooks:
Examine hooks for bending, cracking, or excessive wear at the throat.
Ensure the safety latch (if present) operates freely and is not damaged.
Check the hook’s throat opening for compliance with the manufacturer’s specifications.
2. Braking System
Mechanical Brake: Test the brake by lifting a small load and releasing the handle. The load should remain stationary.
Brake Pads/Linings: Check for wear or contamination (e.g., oil, grease) that could reduce braking efficiency.
Brake Adjustment: Ensure the brake is properly adjusted to prevent slippage under load.
3. Gear & Transmission
Gears: Inspect for chipped teeth, pitting, or excessive wear.
Bearings: Listen for unusual noises (grinding, squeaking) during operation, which may indicate worn bearings.
Lubrication: Verify that all moving parts are adequately lubricated according to the manufacturer’s recommendations.
4. Operating Handle & Controls
Handle: Ensure the handle is straight, not bent, and securely attached.
Ratchet Mechanism: Test the ratchet for smooth operation and proper engagement.
Control Levers: For lever-operated hoists, check that levers move freely and return to neutral positions.
5. Safety Devices
Overload Protection: If equipped, verify that the overload limiter functions correctly (e.g., trips at the rated load).
Limit Switches: For hoists with upper/lower travel limits, test that the switches activate at the correct positions.
Emergency Stop: Ensure the emergency stop mechanism (if present) is easily accessible and operational.
6. Load Capacity & Labeling
Rated Load: Confirm the hoist’s rated capacity matches the load to be lifted. Never exceed the specified limit.
Identification Tags: Check that all labels (capacity, serial number, manufacturer) are legible and intact.
7. Environmental Factors
Operating Environment: Ensure the hoist is suitable for the environment (e.g., corrosion resistance for marine use, explosion-proof for hazardous areas).
Temperature: Verify that the hoist operates within the specified temperature range.
8. Suspension & Mounting
Top Hook/Lug: Inspect the mounting point for cracks or wear. Ensure it is securely fastened to the support structure.
Slings/Shackles: If used, check slings for cuts, fraying, or distortion. Verify shackles are pinned and moused correctly.
9. Functional Test
No-Load Test: Operate the hoist without a load to check for smooth operation, unusual noises, or vibrations.
Light-Load Test: Lift a small load (e.g., 10% of rated capacity) to verify braking and control functionality.
10. Documentation & Certification
Inspection Records: Review the hoist’s maintenance and inspection history to ensure it has been serviced regularly.
Certification: Verify that the hoist complies with relevant standards (e.g., ANSI/ASME B30.16, CE marking).
The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist,Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment