R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 73)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
- Replace if deformations, cracks, broken welding seams, etc. are found around the hoisting unit fixing places.
5.26.5.6 Other components inspection after overspeed
• Check the fixing of counterweights
- No deformations, cracks, etc. are allowed around the fixing places
• Check visually the hook block, upper sheave block, overload device and rope anchorage
- No deformations allowed – change accordingly
• Inspect the rope
• Check the overload device with a load
• Check the operation of the hoist upper limit switch
• Check that the bridge and trolley wheels have not been damaged and are lying on the runway rails
• Check the fixing of the machinery hoist
5.26.5.7 Drum brake inspection after overspeed
• Check the detent arm for any damage
- The edge should not be deformed out of shape
• Check the shaft of the detent arm
- No deformation, cracks, etc. should be on the shaft
• Check the fixing hole for the detent arm
- No deformation i.e. oval shape or cracks
• Change the brake rim(s), screws and disc springs
• Proceed with all other checks as in normal drum brake service
• Adjust the brake. Refer to the manufacturer’s hoist test report.
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With every fifth emergency breaking the detent arm and its shaft has to be changed.