VERTICAL LIFT GATES

Vertical lift gates

VERTICAL LIFT GATES

  • This is the gate that is in most common use in all the irrigation structures.
  • It consists of a Rectangular skin plate of mild steel.
  • This plate remains supported on a framework of I-girders or channel sections.
  • Grooves are constructed on the crest as well as along the inside of piers.
  • The gates slide or move, vertically up end down in these grooves.
  • Water pressure acting on the gate is transferred to the crest and piers.
  • In order to facilitate lifting and lowering of the gates, rollers are fitted in the grooves.
  • The gates are lifted with the help of winches.
  • Counterweights are also used to ease the lifting of the gates.
  • Counterweights remain suspended with one end of the ropes.
  • The other end of the ropes being connected to the gates.
  • If gates are very big in size, they may be constructed in more than one part and each part moves separately.
  • These gates may be constructed in sizes varying from 6 m to 15 m in height and 15 m in width.

Fig. 14. 23. Vertical lift gate.

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