General Specifications for Electric Overheard Traveling Cranes Heavy Duty Steel
General Specifications for Electric Overheard Traveling Cranes Heavy Duty Steel
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(e) Brakes for same size motor shall be alike and inter- changeable.
(f) Mechanical retaining brakes, if specified shall be of sufficient capacity to absolutely prevent load from descending unless motor is revolved by power in the lowering direction.
(g) Foot brake shall be provided for bridge movement, capable to stop crane under any load condition with 100 pounds pressure on foot lever in a distance not exceeding 10 per cent of the speed in feet per minute at which the crane is traveling when... the brake is applied.
(h) Means shall be provided to prevent any parts of brake from falling to the ground in case they become detached or broken.
33. Sanders.
Track sanders . Operated from the cab by the crane operator, shall be provided for sanding the runway rails when the rails are too slippery at any time for operating.
34. Ropes.
(a) Ropes shall be suitable for the service they are cm- ployed for.
(b) Where double ropes are provided for safety or for double drive, each rope shall have the same capacity that would be required if only one rope was provided.
What to read after General Specifications for Electric Overheard Traveling Cranes Heavy Duty Steel?
You can find similar books in the "Read Also" column, or choose other free books by Pittsburgh Association of Iron And Steel Electrical Engineers to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(e) Brakes for same size motor shall be alike and inter- changeable.
(f) Mechanical retaining brakes, if specified shall be of sufficient capacity to absolutely prevent load from descending unless motor is revolved by power in the lowering direction.
(g) Foot brake shall be provided for bridge movement, capable to stop crane under any load condition with 100 pounds pressure on foot lever in a distance not exceeding 10 per cent of the speed in feet per minute at which the crane is traveling when... the brake is applied.
(h) Means shall be provided to prevent any parts of brake from falling to the ground in case they become detached or broken.
33. Sanders.
Track sanders . Operated from the cab by the crane operator, shall be provided for sanding the runway rails when the rails are too slippery at any time for operating.
34. Ropes.
(a) Ropes shall be suitable for the service they are cm- ployed for.
(b) Where double ropes are provided for safety or for double drive, each rope shall have the same capacity that would be required if only one rope was provided.
What to read after General Specifications for Electric Overheard Traveling Cranes Heavy Duty Steel?
You can find similar books in the "Read Also" column, or choose other free books by Pittsburgh Association of Iron And Steel Electrical Engineers to read onlineMoreLess
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