GB/T 3871.12-1993 Test methods for agricultural wheeled and tracked tractors Part 12: Operational tests
Some standard content:
UDC531.371 -629.114.2
National Standard of the People's Republic of China
GB/T 3871. 1~3871. 12—93
Test methods for agricultural wheeled and tracklaying tractors1993-03-03 Issued
1993.10-01 Issued
National Technical Supervision Bureau
National Standard of the People's Republic of China
Test methodis agricultural wheeled and tracklaying tractors-Part 12:Working tests tests
1 Subject content and scope of application
GB/3871.1233
代0333183
This standard specifies the test items for agricultural wheeled and slow tractors under actual use conditions. This standard applies to agricultural dry-type and crawler tractors: 2 Reference standards GB3871.1 Test methods for hydraulic and crawler tractors Part 1 General requirements GB3371.2 Test methods for agricultural wheeled and crawler tractors Part 2 Definition of machine parameters GB3371.3 Test methods for agricultural wheeled and crawler tractors Part 2 Power output test G33871.4 Test methods for hydraulic and crawler tractors Part 4 Hydraulic force and braking test C53871.5 Test methods for agricultural wheeled and crawler tractors Part 6 Braking tests 3 Technical specifications
3.: The time during which the tractor completes various operations: It includes the time before the tractor operates, the time when the head turns and the time when the tractor is idle. The new working time is calculated according to the new regulations. The working time also includes the tractor's self-development time, the test time and the engine idling time,
3.? Maintenance working time is the total time required to complete the maintenance specified in the instruction manual, excluding the time caused by human or natural reasons. 3.3 Working time: The total time required to eliminate machine faults, including disconnection, commissioning and so on. The tax includes the time caused by human and natural errors. 3.4 Level load coefficient: the ratio of the average utilization rate of the engine when the machine completes the operation to its rated power. 4 Test equipment and data required for oil measurement accuracy
2.1 The test instruments and equipment mainly include: power profiling test monitoring platform (engine heat reduction technical equipment), filter master control test platform, lubrication and rotation base equipment, all must be precise measuring equipment, timer, scale, lifting scale, accurate sample, gas rise method, humidity meter, temperature meter, 4.2 Parameter measurement accuracy
During the test, the test equipment can be coordinated with the medical room. , the test or accuracy should be consistent with the test object six requirements, other parameters should meet the requirements, quality +0.0% drop from ±2.0J to 1.0% +0.25, speed = 1.5, oil temperature +0.5%, driving speed ±3.0%, humidity = 2.0(, global temperature ±.5, atmospheric pressure +(.2kPa), air pressure ±,u%.
Temporary National Technical Supervision Bureau 19930303 Approved
1993-10-0. Implementation
5 Test Parts
GB/T 3871.12-93
5.1 At the beginning, the technical status and general test requirements of the test machine shall comply with the relevant provisions of GB381.1. 5.2 The test area shall be the area where the test machine is applicable to the operation of the test machine. 5.3 The equipment used by the test machine to complete various operations shall be the equipment that matches the tractor. 5.4 The equipment added to the machine shall be based on the current operation conditions and the working area. 6 Test methods
6.1 Precision test
For new product type tests, the required parts specified in the relevant documents shall be precisely tested before the machine is put into use, and the parts shall be recorded in the table.
6.2 Performance test
Each certified unit shall be subjected to the following performance tests after the machine is put into use, before the machine is put into use, and after the use test. The results shall be recorded in Table 1 and Table 3.
||6.7.1 Functional test of shaft
Perform the maximum average rate test and variable load test according to GB3891.3. G.2.2 Hydraulic lifting capacity test
Perform the maximum lifting load specified in the instruction manual on the shaft according to GB3871.4, determine the lifting stroke and static settlement value.
6.2.3 Dynamic test
Perform the maximum lifting load specified in the instruction manual on the shaft according to GB33716, determine the cold braking time. 6-3 Quick Test
Put the tested tractor into normal use under actual use conditions and use it strictly in accordance with the instructions for use. 6.3.1 Number of test tractors: 2 for each model, 6.3.2 Cumulative working time of various conditions: For each new tractor with a standard operating rate greater than 15%, the total operating time of the tractor should not exceed % of the total test time. 63.3 The work schedule and time ratio shall take into account the suitability of the main work items and the test results. The various operations of the wheeled pulling machine shall be carried out within the test period (tillage, power supply, collection, etc.). The total test time for all the operations is 7 hours.
6-3-4 The time consumption for completing various operations shall be measured at any time during the test control. Based on this, it can be judged whether the two machines are high or low. The negative coefficient of the working time of the pulling machine shall not be lower than the rated load. The load-free effect of the pulling machine with control system shall not be greater than %.
6.3.5 The working conditions of each test machine are detailed in Table 1. According to the actual situation of the pulling machine, the main uses of the pulling machine are as follows: such as operation level, emergency stability, and matching equipment. Through the use of parts, the starting energy of the engine or the engine, the separation temperature working suitability, the sealing of the traction, the field of vision, the comfort of the driver's work, the braking performance of the operation, the coverage and the collection of the order, the maintenance force and other performance inspections are carried out, and the records are made in the record column. According to the table, the water requirements are carried out in the initial, middle and final stages of the test. In the test area, about 4 representative working areas of the tested tractor are used to carry out some inspections on several major parts of the tested tractor. Each inspection period should be no less than one operation. Note that the road and soil drop (soil landing) each account for half of the time, and the various energy-saving results are determined, and the tables (certificates) are shown respectively. 6.3.7 According to Table 7, the main test process (including the test and performance test) is carried out during the test. The average and normal time of various normal methods are compared. 6. Analysis and preservation of damaged parts: All essential faults occurring during the type test shall be carefully analyzed, classified and recorded in Table 852
CB/r3871.12-93
6.3.8 The definition of tractor faults and the classification and judgment rules shall be implemented in accordance with the relevant standards and regulations. For mass-produced fixed products, if the same fault recurs after the fault is eliminated, the number of faults shall be counted separately. For repeated faults occurring during the type test of new products, if the original parts are replaced again under technical improvement, design or manufacturing quality conditions, only the number of faults shall be counted (the time shall be counted as the first time they occurred), and the rest shall be recorded in the report truthfully. 6.4 Final control
After the final performance test is completed, each tested tractor shall be subjected to external inspection and disassembly inspection. In case of failure, but the wear is not effective but the wear is expected to exceed the specified limit, the representative wear parts should be tested; for new products, the new parts should be measured again. The results are recorded in Table 8 and Table 9 respectively. The cumulative working time is calculated from the beginning of the test: the median of the actual size and the drawing size, the difference between the two values before and after the test is the actual wear value. The wear limit value of each core - in accordance with the relevant standards or technical documents of the three factories. 7 Test results and report
7.1 The following formula is used to calculate and test the results, and check whether the three indicators meet the requirements of Article 6.2. a.
Total working time of the tractor
Tr-E(t,-t,-0.8
Total working time of the tractor.h;
In the formula.
Duration of each shift, h,
Time for various machine management during annual dirty operations;
Idle time of the tractor during each shift, h, engine idling time during each shift, h.
Time ratio of each operation
Proportion of time spent on field operation
Where: -Ratio of time spent on non-seasonal work in field
Time ratio of various regular operations (planting, weeding, planting, harvesting, etc.), 10,000. Total work
Summarize by operation type.
Where: -Total work of completed planting operation, ha or 1-km; Shift work of completed planting operation, ha or t·km.dAverage productivity
Summarize by operation type.
.9-rAverage productivity of a certain operation of a tractor, ha/or·km/h: t.——Shift work time of a fixed operation, t,,-0.8r-,he. Average productivity
G,—Gn· 24
Formula, Gr—average and minimum fuel consumption of a tractor for a certain operation, g/h: total fuel consumption of a tractor for a certain operation, kgtG,
G tractor engine idling hour fuel consumption, kg/h. (12
「. Average unit workload fuel consumption
GB/T3871.12-93
Average and minimum unit workload fuel consumption of a tractor for a certain operation, kg/hu or kg/<t-krr). Wu G-.
8 Average output load factor
Formula: average load factor of a tractor for a certain operation, % produced by the value at power output The average utilization rate approximate value obtained on the axle performance line, kw, is the maximum power output from the axle during the calibrated rotation, levy. (6)
For tractors undergoing engine bench tests, P and Gr are respectively replaced by the corresponding power obtained on the engine performance curve and the engine rated power,
1. The following reliability evaluation indicators are calculated using the formulas specified in the relevant standards: mean time between failures MTTF, mean downtime time between failures DTMTBF, comprehensive fault-free rating Q and average factory maintenance cost rate PWC. When calculating [WC], the average maintenance cost of the tractor should be equivalent to the annual maintenance cost. Maintenance period (average working time is 1500h) of the time.
7.? For each trial and error result, process and summarize them separately and record them in Table 1, Table 2, Table 3, Table 8, Table 9 and Table 16. For the single number of times the test is required, calculate the average value.
3 For the main performance of the tested tractor mentioned in 6,3.3, the evaluation of the test personnel should be recorded in the report.
7.4 According to the relevant provisions of 3871.1 standard, prepare the performance test report of the item, 54
Welcome to the signing place
GE/T3871.12-93
Table 1 Power output shaft (or engine) power test results summary table Test date: test
Average atmospheric conditions during test, air flow rate: air disk
Test maximum speed: before test: cooling water after test
Test machine number
Performance
Maximum power test
() Calibration maximum load
(2) (85% of item 13
(3) (75% of item 23
(2) 50% of item 23
(5) (2) 25% of item 23
(6) Empty
(? ）Change the load average
power test
（1）calibrate the maximum speed
（2）（1>85% of the speed
（3）（2>75% of the torque
（4）（2>50% of the torque
After the test
（E）2)35% of the torque
（6）No load
（7）Change the load average
times: add
T lubricant
test abnormal
increase the speed G
test
|kPaRelative temperature change
Related changes
Engine hours natural gas difference
Power transmission oil consumption
Test date, before test
Test location
Prototype
Load: kN
And time,
30mm static resistance drop, mm
Remarks:
Test period: before test
Specification expansion
Brake expansion sweep.km,b
Call point city dynamic also reduced/
Left and right wheel sliding difference cm
GD/T 3871.1293
Table 2 Summary of hydraulic lifting test results After test
Test number
Before test
Test plate
Table 3 Summary of braking test results
After test
Test number
Before testbzxZ.net
After test
Test type
Industry name
Test prototype number
GB/T 3871.12
Tractor test shift registration table
Test three phases
Agricultural service
Ten types of protection and crossing (or road) conditions
Preparation fee situation
Start three hours,
Yunlian completed the work length; working surface Feng
Yunpei engine oil; position
Work memory
k water wetness
Operation efficiency
Engine test cleaning
Road time
Research and maintenance work time
Repair work time
Pulling machine work time
Note:
Energy development machine number
Record work
Page elimination time
Egg time
Record recorder||tt| |Anti-disk agent control
Special grade
Shutdown blade room
Table Pulling machine use acid test shift record summary table The suction support machine is numbered 5
Wu test location
Fuel consumption
Empty riding display.kg
Low room test king total
Light oil
Upper work disk
Bai Xiaotu E period
Emergency time
Heart Faman
Main two-stage work time control format-
Block丨Block丨Block丨Block Engine Cover
On-time information
Tractor model
Work location
How much is the area of the business
Tuanhe Work: Prefecture
Transportation industry: Goods name
Work name fee
Hidden feeling record
GH/r 3871.12—93
Table 6 Tractor performance test production record production number
Farm implement
Road and traffic conditions
Required to work on the road
Operation start time
During the test; Stop time
Resume time
Delay time
Idle time:
Rapid rotation time
Standing time:
Average production time
*t·kn/h
Operation quality description;
Failure time
Tractor system working time
Average hourly fuel consumption
: Jkg/h
Test sample production
Operational name
Rate of skin barrier in the group of bad parts elimination list:
Effect with milk original change its influence type description evidence (pit with tablets) therefore with original medical discovery its chemical control integration nest:
Risk elimination method:
Reduction category
Secret person
Ping single oil plate difficulty
kg'ha element kg/t+ kp.
Table 7 Test record of tractor
Construction location
Working time
Responsible person
Weir worker,
Average load
Driving goods
Amount of working time
Friends' expenses
Non-operating continuous pressure
Tester
Clearance period
Specified test time
Machine number
Test start and end plan
Specified test time
Test location
Expansion and reduction name
CE/T:3871.12—93
Summary table of tractor out-of-service test faults
Test plan
Single-pulling machine fault work room
Sweet garden
Reform Ling Ying plan elimination method
Table 9 Summary table of tractor transmission test season parts wear results Test point
Test item
Net machine code 5 Zero name you
Please twist time position
Test monitoring end good
Nominal size
Bo on the ring system
Final endurance
Name Ai control position or
Actual point engineer sales
Fuel system library
Regulation of the center of the side area
Energy recovery cost
Anti-location
Test Wang hit us to confirm
Plan 2: Time, 1
Let the learning time
test your start and end period
Qin a workpiece time dog, h
: the resumption of work time
cumulative sample method
summer workshop
average hourly fuel
hand for the median latent material
each pull two time ratio
m time, upper
transportation: t-bro
daytime.kg/ha.
transportation code, kg·km
daytime operation lower average negative coefficient, about
field operation time accounts for what percentage of the total time,
DTYTEEN
reliability joint
additional instructions:
GB/T 3871. 1293
Tractor use test results screening summary table
Test number
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China, and this standard is under the jurisdiction of the National Tractor Standardization and Registration Committee. The wood standard is drafted by the Luoyang Shila Machinery Research Institute of the Ministry of Machinery and Electronics Industry. The drafter of the vehicle standard is Shang Shi,
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