PLANT AND EQUIPMENT
| MECHANICAL SERVICES AND ASSET MANAGEMENT DIVISION | |||
| ABOUT US | ORGANISATION CHART | PLANT & EQUIPMENT | REGIONAL WORKSYOP |
| SAFETY AND HEALTH ACTIVITIES | MACHINERY | CONTACT PERSON | |
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EXCAVATORS |
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Excavators are widely used in agriculture schemes throughout Sarawak. The main function of excavators are for desilting of farm perimeter drains, construction and repair of bunds, clearing of river bank, excavation of ponds, site clearing, land levelling and other miscellenous excavation works. There are a total of 129 units excavators maintained by DID Sarawak throughout the state.
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FARM TRACTORS
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Tractors are widely used in agriculture schemes in Sarawak. The main function of tractors are for transportation of farm supplies/fuel/parts and construction materials within scheme area, bush/grass slashing along perimeter bund including trimming of bund slopes and other miscellenous transportation works within scheme area. There are a total of 100 units tractors maintained by DID Sarawak throughout the state.
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| GATE STRUCTURES | ||
| The main function of gates are to Control the flow of seawater into scheme area, Flood control of rivers and the Control of water storage for irigation to agricultural area.The main type of gates in used at DID Sarawak are:- (1) Aluminium Roller Gate (2) Hardwood Screwdown Gate (2) Alumnium Flap Gate |
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Technical Specification For ALUMINIUM ROLLER GATE |
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| Sizes available | (1) 14' X 12' | |
| Gate Body | Aluminium fitted with rubber seal side ( also known as 'music note') and lower part fitted with rubber seal or hardwood | |
| Guide | Mild steel or cast iron side and bottom guides which were cast onto the concrete bed | |
| Hoisting Mechanism | Type AKPA 2A gate hoist consisting of :- - prime mover - diesel/petrol engine, electric and/or manual - gear box - wire ropes and drum - counter weight (concrete) |
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| Functions | Tidal and flood control, storage and distributions of irigation into agricultural schemes | |
Technical Specification For HARDWOOD SCREWDOWN GATE |
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| Sizes available | (1) 1 1/2" x 2' x 2'-4" x 2'-4" (2) 2" x 3'-4" x 3'-5 1/4" (3) 2" x 4'-4" x 4'-5 1/4" (4) 3" x 5'-4" x 5'-5 1/4" (5) 3" x 6'-4" x 6'-5 1/4" |
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| Gate Body | Hardwood with mild steel frame fitted with cast iron spindle bracket | |
| Guide | Mild steel side and bottom guides which were cast onto the concrete platform | |
| Hoisting Mechanism | For no.(4) & (5), using AKPA 1 geared headstock, while the rest using mild steel spindle with cast iron handwheel | |
| Functions | Control of drainage and irigation into agricultural schemes | |
Technical Specification For ALUMINIUM FLAP GATE |
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| Sizes available | (1) 4' x 4' (2) 5' x 5' (3) 6' x 6' |
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| Gate Body | Square aluminium flap fitted with concrete counterweight at one end | |
| Guide | Alumninium bearing frame and bearing bracket fitted onto concrete culvert to guide movement of flap |
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| Hoisting Mechanism | Self-operating; high water level at upstream pushes open the flap while high water level at downstream pushes onto the flap to close the gate. |
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| Functions | Tidal control. | |
HYDRAULICALLY DRIVEN SUBMERSIBLE PUMP |
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| Pumps were used in agricultural schemes mainly for irrigation of farmland. The complete pump set consists of Diesel Engine, Hydraulic Gear Pump, Hydraulic Motor and Submersible Centrifugal Pump. The operating principle of the pump is as follows :- The diesel engine acts as the prime mover which runs the hydraulic gear pump via a flexible chain coupling. The hydraulic gear pump shall pumped the hydraulic oil through the hydraulic hose to drive the hydraulic motor which in turn drive the pump impeller. The general components of a pump is as follows :- | |||
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| Descriptions | Type A | Type B | |
| 1. Engine | Type | Diesel | Diesel |
| Make | Perkins | Perkins | |
| No. of Cylinder | 6 | 4 | |
| Rated Power (km/rpm) |
89.5/1800 | 42.7/1800 | |
| Piston Displacement (c.c) |
5.8 litre | 3.86 litre | |
| 2. Hydraulic Pump | Type | Gear | Gear |
| Make | Tyrone | Tyrone | |
| Overall efficiency | 90% | 90% | |
| Input power (kw) | 47.46 | 25.92 | |
| Rated max. pressure (bar) |
176 | 200 | |
| 3. Hydraulic Motor | Type | Piston | Piston |
| Make | Volvac | Volvac | |
| Overall efficiency | 92% | 96% | |
| Avail.output power (kw) |
110 | 85 | |
| Rated max. pressure |
420 | 420 | |
| 4. Pump | Type | Submersible Centrifugal | Submersible Centrifugal |
| Make | Allen Gwynnes | Allen Gwynnes | |
| Impeller dia (mm) |
310 | 350 | |
| Designed speed (rpm) |
1460 | 1100 | |
| Max rated discharged Vol. |
170 litre/sec ( 6 cusec ) |
170 litre/sec | |
| Inlet dia. (mm) | 250 | 250 | |
| Outlet/Discharged dia. ( mm ) |
250 | 250 | |
| Min. Submergence |
1000 | 1000 | |
| 5. Units Installed ( Location ) | Ng. Merit Scheme (Kapit) - 3 units Banting Scheme (Sri Aman) -3 units Pandaruan Scheme (Limbang) - 3 units |
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