Destructive Test Analysis of Grinder Under Field in Complicated
A
g
ricultural Environment of Leizhou
Zhiqiang Liu
1
, Yuan Zhang
1,2
, Zhongqing Ou
1*
, Yiguo Deng
1
, Lijiao Wei
1
, Ming Li
1
, Long Zhang
3
and Peng Zhang
4
1
Tropical Agricultural Machinery Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang,
China
2
Agricultural Science and Technology Co., Ltd. of YIWU, Zhanjiang,China
3
Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, China
4
The Center of CangLong Agricultural Technology Service for Zhanjiang City, Zhanjiang,China
Keywords: Leizhou Peninsula, smash the machine back, destructive, experimental analysis.
Abstract: In this paper, through the understanding of the basic structural features and working principle of the
crushing and returning machine, the paper introduces Destructive testing process in detail a high perennial
pineapple plant with high intensity and randomness and uniformly distributed shrubs in the fiel; b of the
rubberwood land, and the growth of large areas of vines and shrubs within the forestland, with unknown
environmental factors; c undergrowth of uncultivated land without main crops and hiding the working
environment of construction waste and gravel. Through the comparison analysis of test and test indexes, the
crushing and returning machine shows good production efficiency to the environment with stable texture of
the working object; the fuel consumption is high and shows poor performance for the working conditions
and unstable working conditions of the stability, but in the case of adequate throughput of the object has a
better throwing uniformity, while rattan objects affixed to the situation there is not picking up the
phenomenon; for high pole object, and the case of crushing overload , can not meet the normal crushing
quality requirements.ab working conditions for the flexible working environment, for transmission,
transmission systems, connectors require a higher; c working conditions are rigid environment, the blade
strength, knife holder and bearing the strength of the rack and other requirements. This disruptive test for
the performance of universal crushing machine has a strong practical reference.
1 INTRODUCTION
Leizhou Peninsula is a part of China's tropical and
subtropical regions. Affected by tropical and
subtropical climate, nearly 200 tropical crops have
been planted, including natural rubber, cassava,
banana, lychee, longan, mango, pineapple, oil palm,
pepper, Betel nuts, coffee, cocoa, sisal, cashew nuts,
etc. Occupies an important position in China's
economic development and national defense
construction. At present, the most prominent and
weakest link in the mechanized production of
tropical crops is the need to eliminate and crush the
wild weeds growing madly.
The Leizhou Peninsula is hot and dry in summer,
with mild and rainy winters and humid air (Ou
Zhongqing, 2013). The crops are often densely
populated and the growth rate is relatively fast. Most
of the crops are hard-leaf, high-pole and multi-fiber
tissues. At the same time, there are a large variety of
tropical crops, The awareness of concomitant unified
planning has a large gap between the benefits
expected from farmers and their direct impact on
farmers' recognition of intensive farming
management. At the same time tropical crop
agronomic and agricultural technology does not
match, but also restricted the rapid development of
mechanization (Ou Zhongqing, 2017).
For example: pineapple, which belongs to close
planting crops, thick stems, leaf layers overlap,
criss-cross, thickness of 20cm or more, and
pineapple leaves contain more tough fibers,
compared with other crop straw, has its own unique
biology Features and mechanical properties, high
Liu, Z., Zhang, Y., Ou, Z., Deng, Y., Wei, L., Li, M., Zhang, L. and Zhang, P.
Destructive Test Analysis of Grinder Under Field in Complicated Agricultural Environment of Leizhou.
In 3rd International Conference on Electromechanical Control Technology and Transportation (ICECTT 2018), pages 637-641
ISBN: 978-989-758-312-4
Copyright © 2018 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved
637

strength and thick. Existing pineapple stems and
leaves crushed into the field of pineapple machine
into the ground, often to be 2-3 times the smash in
order to make the crushing effect to meet the
requirements (pineapple stems and leaves less than
or equal to 15cm in the proportion of not less than
90%), see Figure 1 (a, b).
Figure 1: Traditional models crush effect.
For example, due to the slow recovery of the
global economy and the continuous decline in the
prices of crude oil and other commodities, the
world's natural rubber industry has shown a trend of
oversupply. In recent years, the natural rubber in
China has been discarded in large areas and
abandoned. Recently, natural rubber has gradually
started to resume tapping due to the obvious signs of
natural rubber price recovery and favorable policies
stimulated by the state for the natural rubber
industry. However, for rubber tapping, the first step
is to eliminate the shortage and the object to
eliminate it is high over the tractor shrubs and run
over people rattan and gravel and other
environments, shown in Figure 2 (a, b).
Figure 2: The upcoming work environment.
Based on this, it is of great significance to
develop a general purpose crushing and returning
technology and its supporting equipment capable of
carrying high-strength tasks while being able to
handle hard-leaf, high-pole and multi-fiber tissue
objects and achieving the desired results with good
machine reliability (Li Ling, 2014).
2 DESIGN STRUCTURE AND
PRINCIPLES
2.1 Design Principles
2.1.1 Principles applicable to the actual
situation of crushing and returning
fields under complicated environment
Combining with the requirements of the overall
agronomy of main tropical crops for eliminating and
returning farmland to crushing and returning to the
fields and the effective connection of the actual
supporting equipment, the paper designs a new
method which is reasonable in structure, Design
requirements of the model.
2.1.2 machine reliability principles
During the work of crushing and returning field
machine, the processing of hard leaves, high bar,
multi-fiber tissue objects caused by uneven force, so
the whole machine to have high reliability, the use
of double roll combination structure, the need to
have better balance requirements and by Sexually-
stressed structure, to fully protect the improvement
of crushing efficiency.
2.1.3 The principle of common parts and
interchangeability of key components
In the machine under the premise of the strength and
the key structure to ensure the operation effect and
reliability of the movable knife and knife roll
between the use of the knife will be disassembled
connection, knife balancing needs balancing design
to reduce the weight of the host, saving materials,
easy to transport, while taking into account the parts
of the interchangeability, assembly and other
requirements.
2.2 Machine structure and
characteristics
Crushing machine mainly by the suspension
mechanism, rack, transmission system, the knife
stick assembly and contour support structure, the
structure shown in Figure 3.
ICECTT 2018 - 3rd International Conference on Electromechanical Control Technology and Transportation
638

A
A
B
B
1
9
23 4 5 6
7 8
1. Three-point suspension mechanism; 2. Knife roller; 3.
Transmission system; 4. Knife roller fixed knife; 5. Knife
roller; 6. Tensioning mechanism; 7. Knife roller fixed
knife; 8. Rack ; 9 ground
Figure 3: Crush the machine design.
The main equipment has the following structural
features:
a.The role of the front roller is to cut the growing
plants, pick up, and in the fixed knife with the initial
crush it, and then fed into the knife roll. Knife roller
in order to facilitate the pick up of materials, the
design of the larger diameter rotary; Because of its
knife operation from the ground near, inevitably hit
the soil, stones and other hard objects, in order to
protect the tool, so the tool design for the Y-
rejection knife form, The pin shaft is hinged to the
outer circumference of the front roller, and the
rejection of the knife is arranged in the reverse
double helix(Cui Zhende, 2013; Zhang Yuan, 2017).
b.After the role of knife roller is mainly cut cut,
tear the material delivered by the front roller, in
order to prevent contact with the soil, increasing
energy consumption and collision with the soil
damage, design its installation height is higher than
the front roller and its the smaller diameter leaves
the blades with a larger ground clearance. The blade
is designed to be fixed on the knife roll to save
power. Blade arrangement to take double helix way.
c.The role of the ground wheel in addition to
supporting the weight of the field machine, the work
can walk with the ups and downs of the terrain
changes up and down movement, so as to ensure that
the rejection of knife and the ground gap remains
unchanged, the crushed object stubble height change.
3 DESTRUCTIVE TEST AND
RESULT A NALY SIS
3.1 Test plan and index
Destructive test environment of the main selected a:
high-intensity and capricious pineapple perennial
plants, and uniformly distributed throughout the
shrubs; b: more than four years abandoned rubber
tube woodland, and the growth of large areas of
woodland in the forest and shrubs, there Unknown
environmental factors; c: overgrown blocks without
main crops and hidden working environment such as
construction waste and rubble, as shown in Figure 4-
6.
Figure 4: Fiber + shrub land.
Figure 5: Rattan + shrub block.
Figure 6: Macadam plots.
The mill uses the "strong down, first out of head,
broken rod," the step-by-step overall work program,
uniform design work machine width of 1.5 meters,
double-roll structure, double rejection of knife thick
Destructive Test Analysis of Grinder Under Field in Complicated Agricultural Environment of Leizhou
639

structure and blade combination Mode, matching the
Lovol 1204 wheeled tractor, the slow speed of the
entire test process 3 block.
Main test indicators: productivity; fuel
consumption per unit area; job stability; throwing
uniformity; off-site height; average failure time;
number of damaged sites and other indicators.
3.2 Test process
The use of the above program in abc three kinds of
work environment, the test results of the machine
shown in Figure 7-9:
Figure 7: Crushing effect of fiber + shrub land.
Figure 8: Crushing effect of rattan + shrub block.
Figure 9: Crushing effect of Macadam plots.
During the test, the machine suffered various
degrees of damage in varying degrees, including
blade damage / rack cracking; drive system damage,
and belt breakage / bearing burnout / transmission
stuck. See Figure 10-12 for details.
Figure 10: Broken blade and seat.
Figure 11: Rack cracking.
Figure 12: Drive system is damaged.
In the case of machine damage, still show a good
quality of work, some of which work with the
quality of the bulldozer can be comparable.
Figure 13: Fiber + shrub land crushed unqualified effect.
ICECTT 2018 - 3rd International Conference on Electromechanical Control Technology and Transportation
640

Figure 14: Rattan + shrub block crushed unqualified
effect.
3.3 Test results and analysis
In abc three kinds of working conditions of the
relevant indicators tested in Table 1:
Table 1: This caption has one line so it is centered.
index a
b
c
Productivity( h
m
2
/h) 1.21 0.97 1.23
Fuel consumption
(kg/h
m
2
)
3.36 4.02 2.94
stability(%) 84.3 77.1 86.5
S
p
rinkle evenness
(
%
)
90.1 90.2 89.3
Maximum ground
clearance( c
m
)
42 37 12
Mean time to failure
( h)
4.3 3.1 2.6
The number of damaged
p
arts
3 4 2
From Table 1 shows that the machine in the
completion of tasks under the circumstances, the
destructive test feedback, the results of this test must
significantly reduce the average failure time to
ensure the stability of the machine, or can not be
introduced to the market.
4 CONCLUSIONS
The results show that the crushing and returning
machine has a good production efficiency for the
stable working environment of the working object
and has a higher fuel consumption for working
conditions and unstable working conditions and
shows a higher fuel consumption Poor stability, but
in the case of adequate throughput of the object has
a better throw uniformity, in line with crushing back
to the agronomic requirements. At the same time,
rattan objects affixed to the situation there is still not
picking up the phenomenon, for high pole object,
and the crushing overload case, can not meet the
normal crushing quality requirements, ab working
conditions for the flexible working environment, for
transmission, transmission systems, connectors
require a higher; c working conditions are rigid
environment, the blade strength, knife holder and
bearing the strength of the rack and other
requirements. This disruptive test for the
performance of universal crushing machine has a
strong practical reference.
ACKNOWLEDGEMENTS
This work was financially supported by the Central
Public-interest Scientific Institution Basal Research
Fund for Chinese Academy of Tropical Agricultural
Sciences(1630132017003&1630022015018);Collab
orative innovation and platform environment
construction special of Guangdong Province
(2017A040406003);Science and Technology
Program special of Zhanjiang
City(2015A03020)andPublic Welfare Research and
Capacity Building of Guangdong Province
(2017A02028011).
I would like to thank the members of the
research group for their selfless help, especially the
communication author Ou Zhongqing,and the
friendly farms in Guangdong Province for the
project test of strong support.
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