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Machinery Industry Standard of the People's Republic of China
JB/T7135.2-93
Pine Pine Tillage Type for Sheep Grassland
Published on November 21, 1993
Test Method
Implemented on March 1, 1994
Ministry of Machinery Industry of the People's Republic of China
People's Republic of China
Machinery Industry Standard
Pine Pine Tillage Type for Sheep Grassland
Test Method
JB/T 7135.293
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry and printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (PO Box 8144, Beijing 100081)
Copyright reserved
Reproduction prohibited
Format 880×12301/16 Printing sheet 1 quantity
Word count 28.000
First edition in December 1993
First printing in December 1993|| tt||Printing 00.001-500
Price 9.00 yuan
No. 1464
Mechanical Industry Standard of the People's Republic of China
Submerged Plow Type for Sheep Grassland
1 Subject Content and Scope of Application
Test Method
JB/T7135.2-93
This standard specifies the performance test and production test methods for submerged pine plow for sheep grassland (hereinafter referred to as submerged plow). This standard applies to submerged plows for soil loosening, root cutting, fertilization and other operations without turning over the fort on sheep grassland. 2 Reference standards
GB5667 Test methods for agricultural machinery production
General rules for test methods for forage harvesting machinery
3 Test conditions and field investigation
3.1 Test conditions
3.1.1 The technical status of the test unit should be good, and it should be debugged and maintained according to the provisions of the instruction manual. The main technical characteristics of the test sample should be recorded in Table 1.
3.1.2 The driver should be skilled. During the test, neither the tractor nor the driver should be replaced at will. 3.1.3 The instruments used in the test should be within the calibration cycle. The instruments and tools used in the test are shown in Appendix A (reference). 3.1.4 The test site should be selected as a rhizome type natural degraded grassland with a slope of less than 10°. The length of the measurement area should not be less than 50m, and the length of the stable area at both ends should not be less than 20m. The width should ensure the determination of various indicators of the performance test. 3.2 Field investigation
In the test area, 5 measurement points are selected according to the diagonal sampling method. 3.2.1 Determine the area of the test plot, describe the undulation of the surface and the terrain slope in words, and record them in Table 2. 3.2.2 Determine the weather conditions such as air temperature, relative humidity, wind speed, wind direction, etc. according to the provisions of Article 3.1 of NJ417, and record them in Table 3. 3.2.3 Determine the soil firmness and absolute soil moisture content according to the provisions of Article 3.4 of NJ417, and record them in Table 4. 3.2.4 Determine the vegetation conditions and fresh grass yield according to the provisions of Article 3.5 of NJ417, and record them in Table 5. Performance test
4.1 Test purpose
To assess whether the operation quality of the submerged plough meets the design requirements and the agronomic requirements of sheep grassland improvement. 4.2 Test requirements
The determination of various performance indicators should be carried out simultaneously. When testing on the site, the round trip should be no less than 2 times. 4.3 Test content and method
4.3.1 Determination of loosening width, loosening depth and loosening ratio The loosening width, loosening depth and loosening cross-sectional area of each trench were measured at one point in each stroke. The average loosening width and loosening depth of each trench were calculated, and the loosening cross-sectional area of each trench was plotted. The area was calculated, and the flatness of the trench wall was observed. The loosening ratio was calculated according to formula (1) and recorded in Table 6.
Approved by the Ministry of Machinery Industry on November 21, 1993
Implementation on March 1, 1994
JB/T 7135.2-93
Where: A loosening ratio, %;
A.-average loosening cross-sectional area of a single trench, cm*; L. row spacing, cm;
H-average loosening depth, cm.
4.3.2 Determination of the rate of turning over the fort
After the earth fort is loosened, the angle between the ground surface and the bottom of the ditch is greater than 100°. The total turning length of each plowshare is measured in each stroke, and the turning over rate is calculated according to formula (2) and recorded in Table 7.
Where: F,—turning rate, %;
L average value of the total length of each turning over, m; b-number;
L stroke length, m.
4.3.3 Determination of vegetation destruction rate
A small area with a length of 10m and a width of one working width is taken in each stroke. The area of the ground surface destroyed by all the turning over forts and plowshares in the small area is measured, and the vegetation destruction rate is calculated according to formula (3) and recorded in Table 8. Z(A+A)
Where: Z——vegetation destruction rate, %;
A——average value of the area of each zinc turning over, m\; A—average value of the area of the ground destroyed by each zinc handle, m; A. —area of a small area, m.
4.3.4 Determination of soil entry stroke
Measure the straight-line distance from the last zinc plow tip touching the ground to the time when the loosening depth reaches the normal value in each stroke, and record it in Table 9. (3)
4.3.5 Determination of fertilizer discharge amount
Raise the submerged tillage plough so that the ground wheel is off the ground. The fertilizer in the fertilizer box should be no less than 1/3 of the volume. Adjust the fertilizer discharger according to the minimum fertilizer discharge amount, turn the ground wheel to see if there is fertilizer discharged; adjust the fertilizer discharger according to the maximum fertilizer discharge amount, rotate the ground wheel at a speed equivalent to normal operation, and the number of revolutions is equivalent to 50m travel (take the whole number of revolutions). Take the fertilizer discharged by each fertilizer discharger and weigh it with an accuracy of 0.1g. Repeat 5 times, find the average, calculate the fertilizer discharge amount according to formula (4), and record it in Table 10. M,=
元DBn
Wherein: M, fertilizer discharge amount, kg/ha;
The average value of the total discharge each time after the ground wheel rotates n times·g; mp
D——ground wheel diameter, m;
B—machine working width, m;
Number of ground wheel rotations.
4.3.6 Determination of total discharge stability
The determination method is the same as the determination method of fertilizer discharge. After the determination, calculate the standard deviation and coefficient of variation according to formula (5), formula (6), and formula (7), and record them in Table 10.
(x -x)
（(5)
Where: X——average value of total displacement, g; X, total displacement of each row each time, g
n1\—number of measurements;
Sx—standard deviation of total displacement stability, g; Vx—coefficient of variation of total displacement stability, %. 4.3.7 Determination of consistency of displacement of each row
JB/T7135.293
The determination method is the same as the determination of total displacement stability. After the determination, the standard deviation and coefficient of variation are calculated according to formula (8), formula (9) and formula (10) and recorded in Table 10.
Where: Y-average value of displacement of each row, g,
Y,—the sum of the total displacement of each row, g;
n2 number of measured rows;
S——standard deviation of the consistency of the displacement of each row g
Vy—coefficient of variation of the consistency of the displacement of each row, %. 4.3.8 Determination of glide rate
The glide rate shall be determined in accordance with the provisions of Article 4.4 of NJ417 and recorded in Table 11. 4.3.9 Determination of traction power
((10)
The traction resistance shall be measured under the same conditions as normal operation, and the operating speed and loosening depth shall be measured at the same time. According to the measurement results, the traction power is calculated according to formula (11) and recorded in Table 12. Where: N. - power Rate, kW;
P. Traction resistance, N;
V Operating speed. m/s.
4.3.10 Determination of the first trouble-free working time N,
It shall be determined when implementing the provisions of Article 5.3.2.1 of this standard and recorded in Table 16. 5 Production test
5.1 Purpose of production test
To assess the economic efficiency, reliability, durability and safety of main parts and wearing parts of the submersible plough. 5.2 Test requirements
Under normal soil conditions, the single zinc operation volume of the submersible plough shall not be less than 20ha. 5.3 Test content
5.3.1 Technical and economic indicators Determination
According to the method specified in GB5667, measure the pure hourly productivity, shift hourly productivity, calibrated unit power productivity, unit energy consumption, reliability of use, ease of adjustment, and shift time utilization, and record them in Table 14 and Table 15.3
JB/T7135.2—93
5.3.2 Durability and safety determination of main parts and wearing parts During the entire test, record the damage, failure and various abnormal phenomena of parts in detail, and indicate the workload completed, working time, degree of damage and cause, etc. Typical cases should be photographed and recorded in Table 16.5.3.2.Determination of Type 2 Plowshare Wear
The wear of the plowshare is measured by dimensional measurement (measurement accuracy is 1mm) and weighing method (sensitivity is 1g), and recorded in Table 17. 6
Preparation of test report
After the test, the results of observation, measurement and calculation shall be sorted and compiled into a book, and relevant personnel shall be convened for discussion and a test report shall be submitted. The content shall include:
Overview of the test situation:
Introduction to the prototype;
Test results and analysis;
Existing problems and suggestions for improvement;
Conclusion;
Appendix.
Machine name and model:
Measurement date:
Supporting power:
Overall dimensions (length×width×height)
Transport clearance from the ground
Working row distance
Working width
Number of working rows
Fertilizer box volume
Fertilizer dispenser
Tillage parts
Presser
Transmission mechanism
Machine center of gravity
(from the center line of the ground wheel)
Minimum turning radius of the unit
Structural weight
Usage weight
JB/T 7135.2—93
Table 1 Main technical characteristics of prototype
Machine number:
Measurement location:
Number of people:
Fertilizer discharge amount adjustment range
Depth adjustment range
Single front loosening soil width
Minimum compaction pressure
Maximum compaction pressure
Fertilizer discharge speed ratio
No fertilizer
Full of fertilizer
Unit longitudinal stability reserve coefficient
Measurer:
Design data
Reviewer:
Measured databzxZ.net
Test location:
Machine name and model:
Surface undulation, deaf ditch, earth mound, grass mound and other conditions Measurement person:
Meteorological station:
Machine name and Model:
Relative humidity of air
Measurer:
JB/T7135.2-93
Table 2 Surface conditions
Terrain slope
Table 3 Meteorological conditions
Test area (length×width):
Test date:
Relationship between slope and forward direction of unit
Reviewer:
Weather conditions:
Test date:
8:00 a.m.
12:00 noon
Reviewer:
19:00 p.m.
Test location:
Machine name and model:
Sampling depth
>10~15
Total average
Measurer:
JB/T 7135.293
Table 4 Soil conditions
Soil weight
Soil type:
Test date:
T Soil weight
Verifier:
Moisture content
Firmness
Test location:
Pasture type:
Natural height
Measurer:
Test location,
Machine name and model:
Travel measuring point|| tt||Average value
Loosening ratio
Measurer:
Base rod diameter
JB/T7135.2—93
Vegetation conditions
Grass growth
Test date:
Main grass types:
Main grass
Proportion
Verifier:
Table 6 Loosening width, loosening depth, loosening ratio Fresh grass per square meter
Test date:
Tractor model and working level:
Width of green plow loosening soil
Deepth of front loosening soil
Verifier:
Fresh grass yield
Loosening soil section
Ditching and leveling
Test location:
Machine name and model:
Average value of total length
Measurer:
Test location:
Machine name and model:
Average value||tt| |Vegetation destruction rate%
Measurer,
JB/T7135.2-93
Compensation rate
Vegetation destruction rate
Area of each Huahuangbao m
Test date:
Tractor model and working level:
Verifier:
Test date:
Tractor model and working level;
Area of each handle destruction m
Verifier:
Total length2—93
Vegetation conditions
Grass growth
Test date:
Main grass types:
Main grass
Proportion
Reviewer:
Table 6 Loosening width, loosening depth, loosening ratio per square meter of fresh grass
Test date:
Tractor model and working level:
Cuihuo loosening width
Type front loosening depth
Reviewer:
Fresh grass yield
Loosening section
Ditching and leveling
Test location:
Machine name and model:||t t||Average value of total length
Measurer:
Test location:
Machine name and model:
Average value
Vegetation damage rate%
Measurer,
JB/T7135.2-93
Turnover rate
Vegetation damage rate
Area of each Huatuobao m
Test date:
Tractor model and working level:
Verifier:
Test date:
Tractor model and working level;
Area of each handle damage m
Verifier:
Total length2—93
Vegetation conditions
Grass growth
Test date:
Main grass types:
Main grass
Proportion
Reviewer:
Table 6 Loosening width, loosening depth, loosening ratio per square meter of fresh grass
Test date:
Tractor model and working level:
Cuihuo loosening width
Type front loosening depth
Reviewer:
Fresh grass yield
Loosening section
Ditching and leveling
Test location:
Machine name and model:||t t||Average value of total length
Measurer:
Test location:
Machine name and model:
Average value
Vegetation damage rate%
Measurer,
JB/T7135.2-93
Turnover rate
Vegetation damage rate
Area of each Huatuobao m
Test date:
Tractor model and working level:
Verifier:
Test date:
Tractor model and working level;
Area of each handle damage m
Verifier:
Total length
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