2013年7月17日星期三

Routine maintenance of chain hoists


As usual lift hoist lifting gear, its maintenance is very important, you must use the hoist pull opponents after timely maintenance in order to save it. Maintenance of hoists to note the following points: First, the principle of non-personnel hoists understand manipulation. The second is  Prohibited in the chain hoist brake friction surface greased, to load test before use, make sure everything under the premise to use. Third, lift hoistchain hoists after use to clean, painted rust oil, and stored in a dry location,Prevent corrosion phenomenon. Fourth gear mounted hoists operate to strict installation drawings after installation to check for no-load test. Fifth, chain hoist brake partially installed, you should pay attention to the alveolar ratchet pawl engaging claw portion, after the installation started sprocket, Should be the first Bracelet wheel clockwise so that the ratchet, friction plate is pressed against the brake seat. Maintenance through these points, can make the job safer operation chain hoists and avoid unnecessary accidents.
1 after use should be cleaned and coated with rust gourd oil, stored in a dry place to prevent rust and corrosion from moisture chain hoists.
(2) Maintenance and service agencies who should be more familiar with gourds, gourd cleaning parts with kerosene in gear and bearing parts, add grease lubrication, to prevent the performance of the machine do not understand the principle of free disassembly.
3 gourd After cleaning and maintenance, load test should be conducted to confirm working, reliable braking can be delivered.
4 brake friction surfaces must be kept clean. Brake parts should be inspected regularly to prevent brake failure occurred weights from falling phenomenon.
5 around sprocket Manual hoist lifting roller bearings, used butter has been pressed in the adhesion lifting sprocket mounted on the inner ring of the bearing journal, and then into the wall of the bearing outer ring.
6 chain hoists installed brake parts, pay attention with the pawl ratchet pawls engage alveolar good spring pawl control should be flexible and reliable, installed after the chain started, bracelet wheel clockwise, it will ratchet , the friction brake is pressed against the base sheet, bracelets wheels rotate,Ratchet and the gap should be left between the friction plate.
7 In order to maintain and easy removal, hand chain in which a series opening chain (not welded).
8 In the refueling process and the use of chain hoists, brake friction surfaces must be kept clean and regularly check whether the braking and prevent brake failure caused by heavy objects from falling.

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