Multibucket Excavator

a continuous-operation excavator whose working member is made up of several buckets that move along a closed path. Multibucket excavators are classified according to the design of the working member (chain and rotary types) and the method of excavation (transverse-scoop types, in which the direction of motion of the working mechanism is perpendicular to the direction of motion of the machine,

Figure 1. Multiaxle motor vehicles (driving wheels are shown in black): (a) MAZ-537A (USSR) and Tatra-813 (Czechoslovakia), (b) BTR-60P (USSR) and DAF (Netherlands), (c) Panhard-EBR (France), (d) AEC Mammoth (Great Britain), (e) Scamell Samson (Great Britain), (f) SVARZ (USSR), (g) ZIL-131 and Ural-375 (USSR), (h) Alvis (Great Britain), (i) KrAZ-257 (USSR), (j) Büssing-Supercargo (FRG) and Fiat-590NA (Italy), (k) MAZ-516 (USSR), (I) lkarus-180 (Hungary) and Škoda ŠM-16.5 (Czechoslovakia)

Table 1. Some technical characteristics of Soviet multiaxle motor vehicles
	ZIL-131	Ural-375D	KamAZ	KrAZ-257	KrAZ-255B	MAZ-516A	MAZ-537A
Wheel formula..................	6×6	6×6	6×4	6×4	6×6	6×2	8×8
Capacity (tons)..................	3.5	4.5	8.0	12.0	7.5	14.5	15.0
Gross weight (tons)..................	646	84	–	11 13	11 95	88	22 5
Engine power, kW (hp)..................	110 (150)	132 (180)	154 (210)	176 (240)	176 (240)	132 (180)	386 (525)
Speed (km/hr)..................	80	75	80	70	70	85	60
Standard fuel consumption (liters per 100km)..................	40	48	–	36	40	35	125

and longitudinal-scoop types, in which the direction of motion of the working mechanism is the same as that of the machine). The revolving types can work on faces in several directions— that is, transversely, longitudinally, and diagonally.

Multibucket excavators are used to remove rocks that have not previously been loosened, since only the unique designs of the multibucket excavator can act as a loader by filling a bucket with loose (free-flowing) material that extends up to twice the length of the bucket, rather than shearing off a chip. Multibucket excavators are used in combination with railroad and conveyor transportation, cantilever spreaders, and bridge conveyors.

REFERENCE

Dombrovskii, N. G. Mnogokovshovye ekskavatory. Moscow, 1972.

IU. D. BUIANOV