Ads
related to: beacon cage b1212 2 ton electric chain hoistnortherntool.com has been visited by 100K+ users in the past month
mart.ecer.com has been visited by 10K+ users in the past month
Search results
Results From The WOW.Com Content Network
Because there is a traveling pulley at the load, this doubles the mechanical advantage of the fixed (anchored) sprocket assembly, leading to a total mechanical advantage of 2 × P 1 / P 1 − P 2 . For instance, a 1-ton differential chain fall might have a 15-pocket and a 14-pocket sprocket set.
The electric chain hoist, also known as the "electric hoist", is the least used type of engine crane. The operation is similar to the chain hoist in the way that chains are used to lift the engine. The electric chain hoist uses an electric motor operated by remote control to lift the engine, unlike the chain hoist where the operator has to ...
A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), although modern large hoists use alternating current drives that ...
A VRB-25 at Highland Light Side view of a six-lens VRB-25. For outdoor use, bird spikes are added to the top. The VRB-25 is a lighthouse optical system designed and built by Vega Industries Ltd. in Porirua, New Zealand.
The crane has two treadwheels of 16 feet (4.88 m) diameter by 3 feet 10 inches (1.17 m) wide on an axle 13 + 1 ⁄ 2 inches (340 mm) diameter. It is the only double wheel treadwheel crane in the United Kingdom. [ 24 ]
A similar heavy-duty unit with a combination chain and cable became available in 1935 that was used by railroads, but lacked the success of the cable-only type units. [ 1 ] A similar tool to a come-along is a cable puller , which does not have a drum and ratchet but directly grips the cable, allowing unlimited lengths of wire rope to be used.