PAES 218:2004 - 219:2004 Flashcards
PAES 218: 2004
Agricultural Machinery – Forage Chopper – Specifications
type of forage chopper where the chopped materials are blown up through the blow-up pipe
blow-up type
cutting rotor
devices intended to cut the crop into short lengths with reasonable consistency within a range
of optional settings
cutterhead
knives on cylindrical mountings such that the cutting edges of the knives are essentially
parallel to the axis of rotation
cylinder cutterhead
cylindrical roll generally with protrusions or flutes, used to gather, compress and advance the
crop into the cutterhead
feedroll
knives mounted essentially radially with the cutting edges describing a plane perpendicular to
the axis of rotation
flywheel cutterhead
machine used to cut the crop into short parallel lengths
forage chopper
type of forage chopper where the chopped materials are dropped down to the bottom of
machine
let-fall type
forage chopper which uses a feeding mechanism consisting of four or more feed rolls to
partially orient and advance the crop at a consistent rate into the cutting mechanism
NOTE This type of forage chopper is capable of producing the shortest and most uniformly cut particles.
precision-cut forage chopper
forage chopper without a distinct feeding mechanism, usually employing flails to impact-cut
and chop crop directly into shorter pieces
NOTE This type of forage chopper usually produces the longest mean particle lengths, and the least uniformly
cut particles.
random-cut forage chopper
forage chopper which uses a feeding mechanism consisting of two feed rolls, or other means
such as an auger, to advance the crop to the cutting mechanism
NOTE Mean particle lengths and particle uniformity are intermediate between those obtained with precision cut
and random-cut forage choppers.
semi-precision-cut forage chopper
shear bar
fixed plate providing a stationary edge against which the cutterhead knives shear the crop
stationary knife
type of forage chopper where the chopped materials are thrown away to the front area of the
machine
throw-away type
Feeding mechanism
precision-cut
semi-precision-cut
random-cut
Chopping mechanism
Cylinder cutterhead
Fly-wheel cutterhead
Discharging mechanism
Let-fall type
Throw-away
Blow-up type
Allowable noise level for continuous exposure
4 hours
The noise emitted by the forage chopper shall not be more than???
96 db (A)
For random fed forage chopper, the length of the feeding table shall not be???
less than the arm length
Precision-cut and semi-precision cut forage chopper shall be able to cut???
at least three
different length settings with 5% maximum variation of cut
The construction shall be rigid and durable without breakdown of its major components (i.e. cutting assembly, etc) for at least ??? from purchase by the first buyer.
six months
Marking shall be stated in ??? and ??? and shall be printed in???
English and Filipino
red color with a white background
PAES 219:2004
Agricultural Machinery – Forage Chopper – Methods of Test
ratio of the weight of the fresh chopped materials collected at all outlets, to the total fresh
weight of the input of the chopper, expressed in percent
chopping efficiency
any crop used as silage, soilage or animal feed, usually mixed with fermenting agents
forage
part of the forage chopper where the forage to be chopped are loaded
feeding table
weight of processed material collected per unit time, expressed in kilogram per hour
output capacity
distance between the horizontal supporting surface and the horizontal plane touching the
uppermost part of the forage chopper
overall height
distance between the vertical planes at the right angles to the median plane of the forage
chopper and touching its front and rear extremities
overall length
distance between the vertical planes parallel to the median plane of the machine, each plane
touching the outermost point of the forage chopper on its respective side
overall width
The amount of test material to be supplied shall be at least ??? of input capacity of
forage chopper.
75 %
A ??? shall be used as reference plane for verification of forage
chopper’s dimensional specifications.
plain and level surface
A minimum of ???, with duration of at least ???, shall be adopted.
three test trials
15 minutes per trial
The noise level shall be measured
approximately ??? away from the ear level of the feeder and collector of the chopped
materials
50 mm
The speed of the rotating shafts of the major components of the forage chopper shall be taken
using a ???.
tachometer
The conditions of the test materials such as length of forage crop shall be measured by
randomly taking ??? “representative samples” which represents the different conditions of test
materials in the bulk.
20
During each test trial, ??? samples each weighing ??? shall be randomly collected from the output of the forage chopper to be analyzed in the laboratory. Half (500 g) of the
one kilogram sample shall be used for laboratory analysis and the other half (500 g) shall be
used for reference purposes or for an eventual second check in case of review.
three
one kilogram
This shall be taken using oven-dry method.
Moisture content
For each test trial, select ??? representative sample weighing at least ??? of
chopped materials and place in the moisture can.
three
25 g
Dry the sample in the oven with temperature of ??? for ???
103 °C ± 1 °C
24 h
In each test trial, randomly take ??? samples from the outlet. The length of each
piece in the samples shall be measured to find the average length of cut, the coefficient of
variation, precision (% error) of cut and chopping efficiency of the forage chopper.
three-30 pieces
In each test trial, randomly take ??? samples from the outlet. Uncut forage from the
samples shall be separated and weighted. Chopping efficiency shall be calculated using the
equation in Annex E.
three-250 g
(AMTEC)
Agricultural Machinery Testing
and Evaluation Center
??? shall be generally used for the manufacture of the different components of the forage chopper.
Steel bars and heavy-duty mild steel
Knives shall be made of ???
AISI 1080 to AISI 1085 or its ISO equivalent.
Bolts and screws to be used shall conform with the requirements of ???
PAES 311 and
PAES 313.
Fuel/Power consumption
Before the start of each test trial, the fuel tank shall be filled to ??? After each test
trial the tank shall be refilled ???. The amount of refueling is the fuel consumption for the test. When filling up the tank, keep the tank horizontal so as not to leave
empty space in the tank. In case an electric motor is used primemover, ??? shall be
used to measure electric energy consumption.
- its capacity.
- using graduated cylinder
- a power meter
