332 Machine Drawing
dharm
d:\N-Design\Des18-4.pm5
SQ. THREAD, DIA 24
5
45
8
(^84675)
8
245 45
X
R25
R25
R12
f 45
35
20
X^1
f 32
f^12
32
SQ. THD DIA 24
2
190
28
10
X–X
50
f 20
45
M6, DEEP 5
210
10
f^12
HOLE, DIA 3 REAM
FOR TAPER PIN
4 f
20
12
20
f 3
6
5
f^20
f 40
f 20
8
f 45
DIA 7, C’BORE
DIA 12
7
M16
(^522)
f 12
3
7
19
8
12
125
Sl. No. Name Matl. Qty.
1 2 3 4 5 6 7
Frame
Screw
Pad
Tommy bar
Collar
Pin
Cap screw
CI
MS
MS
MS
MS
MS
MS
1 1 1 1 1 1 1
Parts list
Fig. 18.48 C-clamp
18.5.11 Crane Hook
Figure 18.49 shows the details of a crane hook. The bush 6 is placed in the hook anchor 3 which
in-turn is placed on the crane hook 1. The lock-nut 9 is used to lock this assembly in position and
a pin is used to lock the nut. The bush facilitates free rotation of the crane hook in the hook
anchor.
The end bushes 4 are placed on the outside of the support plates 2 and fitted with the bolts
and nuts 11. The support plate assembly is placed on either side of the above crane hook assembly
and the three plate spacers 5 are also used to maintain the distance between the support plates
and fixed in position by means of the lock-nuts 7 and 8. The washers 10 are used for clamping the
plate spacers with lock-nuts.
Exercise
Figure 18.49 shows the details of a crane hook. Assemble the parts and draw to a suitable scale,
(i) the view from the front and (ii) view from the side.
