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Q1— Section header —
1.1Soft eye hand spliced Thimble eye machine s waged Closed swag s ocket (3\
1.2.1ong splice is used to join two ropes which are required to pass through a block. (2\
1.2.2hort splice is simpler but as this splice increases the size of the rope it cannot be used in the same way as a long splice. (3\
1.3ndless haulage ain and tail haulage (3\
1.4Increase d wearing surface Greater strength Greater endurance (4\
1.5Easier to handle Lighter in weight reat er resistance to shock loading Longer life (5\ [20]20
Q2— Section header —
2.1A: Block with a shackle B: Block with a swivel hook Line ball (3\
2.2Chain slings require careful s torage and regular maintenance. Store chains on an frame in a clean, dry place. (3\
2.3(3\
2.4Check that the gears and the ratchet are in good condition i.e. no wear, breakage, dents. eck that the guards are not damaged. Check
2.5Safety l eather gloves (1\ [15]15
Q3— Section header —
3.1Check for bent links. Check for cracks in weld areas. Check for scar s or mark ings which tend to weaken links. Check for corrosion pits. Check the lifted fins on either electric or forged welded chains to indicate
3.2Run overs of vehicles Blasting Being trapped at crossings Running around on shafts of su pport pulleys or return wheels Falling/Hanging in the air Running through badly grooved
3.3Haulage rope Attachment Under rope (3\ [10]10
Q4— Section header —
4.1Drum winder Koepe winder Elevators (4\
4.2.1Breaking force is the measured force necessary to break the wire in the rope that is under extreme tension The heat assists in reducing this force.
4.2.2Reserve strength is the combined strength of all the wires in the rope. The outer wires exclude the strength which serves as a wearing protection for the inner wires. (2\
4.4.1Fibre rop (1\
4.4.2The rope carries lubricant and it has larger wires to resist heavy abrasion. (2\ [15]15
Q5— Section header —
5.1A: Crane hook or hook B: Plate grab eye C: Locking lever D: Plate grab grip Flat sheet materia (5\
5.2Plate grab (1\
5.3Check that the locking lever is in good working condition. Check that there is no cracks on the hook and plate grab eye. Check
Q6— Section header —
6.1.1Derricking is the movement of the jib crane when it is pivoting on a vertical plane.
6.1.2Stability reach is the distance of the jib head pin from the point of intersection of the nearest base line and the vertical plane passing through the centre line of the jib.
6.1.3
6.2.1frame d errick is a frame which resembles an A hape. The boom is hinged upon a horizontal beam near the bottom of the frame. Guy wires run from the top of the boom to the top of the frame
6.2.2
6.3ake up little space and help factories make the mos t use of available floor space an be used as primary lifting device nsure maximum equipment and
6.4The chain is heated to a cherry red colour temperature and then left to cool down slowly. (2\
6.520
Q7— Section header —
7.1
7.210