GB620265A - Improvements relating to sluice gates - Google Patents

Abstract

620,265. Sluice gates. BOWTELL, W. J. Jan. 14, 1947, No. 1197. [Class 68 (ii)] A sluice gate which slides vertically in guides 15, 16, in or on side piers 11, 12, is constructed of relatively thin plate or sheet 10 curved about a vertical axis to part circular cylinder form with its convex surface downstream. The gate preferably subtends an angle between 90 and 180 degrees, with the sides 13, 14 adjacent the guides 15, 16, and approximately parallel to the flow 17. The bottom rests on a sill and has stanching means, e.g. a rubber strip. The operating devices are attached directly above the centre of gravity. The whole side of the sheet 10 is secured to a frame member 21 which has an offset roller track 22 and runs on rollers 23 which bear. own guide rail 24 on the downstream side (see Fig. 3). The line of thrust 25 is at an angle of about 15 degrees to the flow 17 and is directed towards the interior of the pier. To resist turning the frame has auxiliary wheels 26 substantially perpendicular to rollers 23, bearing against the shaped guides 27, on the upstream side, and pads 30 limit upstream movement. A springy stanching plate 32 fitted to extension 31 of the guide 27 contacts the guide 24 or reinforcing plates 33 on the gate side 14, and gives a smooth path to the water, and excludes water and silt from the guides. The rollers may be replaced by main wheels 34 carried on axes on the frame 21, and the gate reinforced by plates 18 (see Fig. 5). Alternatively, the gate may be fitted with bogies at each side, one at or slightly below the centre of pressure, and another at high-water level. Each bogie, Fig. 8, has a frame 35, two main wheels 34, an auxiliary wheel 26, and attachment lugs 36. Fig. 9 shows an arrangement in which the auxiliary wheels are replaced by a sliding surface 38. The guide grooves may be opened above water to give access to the mounting.