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A Safe Load Indicator (SLI) or an Automatic Safe Load Indicator (ASLI) is a device which is installed on mobile or portal cranes to alert the operator if the lift is exceeding the safe operating range of the machinery. [1] In some cases, the device will physically lock the machinery in circumstances it determines to be unsafe.
1.Safe load indicator for crane (SLI) 2.automatic safe load indicator for cranes 3.load indicator for crawler crane (SLI) 4. Tower crane safe load indicator SLI 5. Hydra F15 crane (SLI) load indicator 6.
Greco-Roman Trispastos ("Three-pulley-crane"), a simple crane type (150 kg load) A crane for lifting heavy loads was developed by the Ancient Greeks in the late 6th century BC. [7] The archaeological record shows that no later than c. 515 BC distinctive cuttings for both lifting tongs and lewis irons begin to appear on stone blocks of Greek ...
A load cell converts a force such as tension, compression, pressure, or torque into a signal (electrical, pneumatic or hydraulic pressure, or mechanical displacement indicator) that can be measured and standardized.
A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [ 1 ] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
Safe Load Indicator, in cranes; SLI battery, used in automotives; Space Launch Initiative, a US project; Specific language impairment, a medical diagnosis; Symmetric level-index arithmetic, in mathematics
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A friend, Gordon Burt of Mowlem, was having trouble with jib cranes and Nash came up with a device to calculate and display the weight of a load a crane was about to lift. In 1929 he launched Nash Safe-Load Indicators, manufacture was later licensed to Vickers.
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