JB/T 7316-1994 Test methods for hydraulic systems of grain combine harvesters
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T7316-1994
Hydraulic system of grain combine harvester
Test method
Published on July 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1995
Mechanical Industry Standard of the People's Republic of China
Hydraulic system of grain combine harvester
Test method
Subject content and scope of application
This standard specifies the test method for performance and cleanliness of hydraulic system of grain combine harvester JB/T 7316-1994
This standard is applicable to the determination of performance and cleanliness of hydraulic steering, hydraulic control system and reel, pick-up and travel hydraulic drive system of grain combine harvester.
Basic requirements
2.1 The accuracy of various equipment, instruments and measuring tools used for testing should meet the requirements of measurement accuracy, and should be checked and calibrated before testing. 2.2 During the test, the accuracy and reliability of each test data must be guaranteed. If abnormal data is found, the cause should be found out in time and necessary processing should be done.
Instruments and equipment
℃).
Pressure gauge: accuracy 1.5;
Timer: accuracy 0.1s;
Tachometer: accuracy ±1%;
Tape measure: accuracy 1mm;
Point thermometer: accuracy ±2.25℃;
XZR-B contamination comparison microscope;
Vacuum pump;
Suction filtration vacuum bottle;
Stainless steel toothless flat-mouth tweezers;
Sample bottle: 500mL;
Measuring cylinder: 250mL;
Glass slide and cover;
Sand core filter device;
White silk cloth;
Plastic tube;
Filter membrane: two white microporous filter membranes with a diameter of g50mm and pore sizes of 0.45μm and 0.8μm ; Cleaning liquid: liquid detergent without solid residue, distilled water or demineralized water, isopropyl alcohol and petroleum ether (boiling range 60～90) Approved by the Ministry of Machinery Industry on July 18, 1994
Implemented on July 1, 1995
4 Test conditions
4.1 The test should be carried out on a dry, hard and flat road surface. JB/T7316-1994
4.2 Before starting the test, the machine should be operated under the maximum throttle condition for not less than 30 minutes, and the following points should be operated at the same time to make the oil temperature of each hydraulic system not lower than 40℃.
Operate the steering wheel to turn the guide wheel to the left and right to the limit position, and do it for not less than 10 times; a.
Operate the control valve to raise and lower the cutting platform, raise and lower the reel wheel, travel continuously variable speed, and unload grain The rotation of the conveying screw and other actions are not less than 10b.
Operate the speed control valve to rotate the dial wheel (or detector); d. Operate the stepless speed change handle to make the machine move forward and backward. 5 Test method
The machine should be tested under the maximum throttle condition. 5.1 Steering system performance test
5.1.1 Steering gear automatic rebound performance test
The steering wheel is turned left and right, and then the external force is eliminated to observe whether it can rebound automatically. 5.1.2 Steering wheel rotation circle test
Turn the steering wheel to make the guide wheel turn from the left extreme position to the right extreme position, and then from the right extreme position back to the left extreme position, and record the number of steering wheel rotation circles respectively. Measure 3 times and take the average value. 5.1.3 Steering system pressure test| |tt||After the guide wheel turns to the left (or right) limit position, continue to turn the steering wheel. At this time, measure the system pressure at the entrance of the steering hydraulic cylinder oil inlet chamber. Measure 3 times and take the average value. 5.2 Operating system performance test
5.2.1 Cutting platform lifting speed test
Operate the cutting platform lifting control valve to lift the cutting platform from the lowest position to the highest position, and then lower it from the highest position to the lowest position. Record the time required for the cutting platform to lift and lower, and the height of the cutting knife from the ground at the lowest and highest positions. Measure 3 times and take the average value. Calculate the lifting and lowering speed of the cutting platform.
5.2.2 Cutting platform static settlement test
Operate the cutting platform control valve to lift the cutting platform to the highest position, then turn off the engine, and then measure the height of the cutting knife from the left and right positions. After standing for 30 minutes, measure the height of the two positions from the ground again, calculate the difference between the two, and take the average value. 5.2.3 Reel lifting speed test
Operate the reel control valve to raise the reel from the lowest position to the highest position, and then lower it from the highest position to the lowest position. Record the time required for the reel to be raised and lowered, and the height of the axis from the ground at the lowest and highest positions. Measure 3 times and take the average value. Calculate the reel lifting and lowering speed.
5.2.4 Reel static settlement test
Operate the reel control valve to raise the reel to the highest position, then turn off the engine and measure the height of the two axes of the reel from the ground. After standing for 30 minutes, measure the height from the ground at the two locations again. Calculate the difference between the two and take the average value. The header should be in the lowest position during the test.
5.2.5 Stability test of continuously variable speed
JB/T7316-1994
After adjusting the speed change belt to the highest limit position, stop the machine and measure the position of the continuously variable speed belt on the pulley. After the measurement, start the machine and run it stably for 20 minutes (the second gear is the highest speed for wheeled machines, and 5-7 km/h for belt machines). Then stop the machine and measure the position of the continuously variable speed belt on the pulley. Calculate the downward displacement of the continuously variable speed belt on the pulley. 5.2.6 Rotation performance test of grain unloading conveying spiral Operate the grain unloading control valve to make the grain unloading conveying spiral return from the transportation state to the grain unloading state, and then return from the grain unloading state to the transportation state, and record the required time respectively. Measure 3 times and take the average value. 5.2.7 Operating system pressure test
Operate the control valve of the header to lift the header to the highest position, and then continue to operate the control valve. At this time, measure the system pressure at the oil inlet of the header lifting hydraulic cylinder. Measure 3 times and take the average value. 5.3 Performance test of hydraulic drive system
5.3.1 Performance test of hydraulic drive system for reel and pickup 5.3.1.1 Speed test
After adjusting the speed regulating valve to the maximum position, measure the speed of the reel and pickup. Measure 3 times and take the average value. 5.3.1.2 Pressure test
After adjusting the speed regulating valve to any position and fixing it, then force the reel or pickup to stop, at this time measure the pressure of the hydraulic drive system at the oil inlet of the hydraulic motor. Measure 3 times and take the average value. 5.3.2 Performance test of travel hydraulic drive system 5.3.2.1 Travel speed test
After starting the engine, pull the travel gear lever to the maximum forward position. The model with hydraulic motor transmission gearbox should use the highest forward gear, and then adjust to a large throttle to make the machine pass through the test area at a uniform speed. The test area is 50m long and the time required to pass through the test area is measured. Measure 3 times and take the average value. Calculate the speed of the machine. 5.3.2.2 Pressure test
5.3.2.2.1 Oil replenishment system pressure test
After pulling the travel stepless speed change lever to 0 (neutral position), start the engine and measure the system maximum oil replenishment pressure at the oil discharge port of the oil replenishment pump under the condition of maximum throttle. Measure 3 times and take the average value. 5.3.2.2.2 Drive system pressure test
After starting the engine, use the foot brake and hand brake to brake the machine. If there is no mechanical braking device, use an obstacle to keep the machine in place. Pull the travel stepless speed change lever to the medium speed forward position. When the engine is adjusted to the maximum throttle condition, measure the system maximum pressure at the oil discharge port of the plunger pump. Measure 3 times and take the average value. 5.3.2.3 Temperature rise test
After the machine runs at the maximum speed for 30 minutes, stop the machine every 5 minutes and measure the oil temperature in the oil tank until the two measured values are the same.
5.4 Hydraulic pipeline leakage test
5.4.1 After the guide wheel turns to the left and right extreme positions, continue to turn the steering wheel for 1 minute each to observe the hydraulic pipeline leakage of the steering system. 5.4.2 After the header, reel, travel continuously variable transmission, unloading grain conveying screw, etc. are at the extreme positions, continue to operate the control valve for 1 minute to observe the hydraulic pipeline leakage of each line of the operating system. 3
JB/T7316-1994
5.4.3 Adjust the speed control valve to a certain position and keep it fixed, then force the reel and pick-up to stop for 1 minute, and observe the hydraulic pipeline leakage of the reel and pick-up hydraulic drive system. 5.4.4 After starting the engine, use the foot brake and hand brake to stop the machine. If there is no mechanical brake device, use obstacles to keep the machine in place. Pull the travel stepless speed lever to the medium speed forward and reverse positions respectively. When the engine is adjusted to the maximum throttle condition, move forward and reverse for 1 minute each, and observe the leakage of the hydraulic pipeline of the travel hydraulic drive system. 5.5 Determination of the cleanliness of the hydraulic system
5.5.1 Sampling operation procedures
5.5.1.1 Test preparation
a. First clean the test filter device, bottle, glass slide, cover slide, measuring cylinder, plastic tube and other equipment with a mixture of warm water and liquid detergent, then with warm water, and then rinse with distilled water or demineralized water, and finally rinse with isopropyl alcohol and petroleum ether filtered through a 0.45m filter membrane.
b. After washing with petroleum ether, the funnel on the filter device should be inverted; a small amount of petroleum is allowed to remain in the bottle and the measuring cylinder, and the bottle mouth should be covered with a plastic film; the glass cover and the slide should be wiped clean with white silk cloth and placed upright; the plastic tube should be placed in a clean plastic bag. 5.5.1.2 Taking oil samples
Insert the cleaned plastic tube into the middle of each oil tank, and wait for the oil to flow out of the plastic tube for 1 minute. Use the sampling bottle to collect two oil samples, one for determination and the other for backup. Extraction of oil samples should be carried out within two hours after the completion of the above tests. If it exceeds two hours, it needs to be re-operated according to the requirements of Article 4.2, and then sampling is carried out.
5.5.1.3 Oil sample processing
a. Use clean tweezers to pick up a 0.8μm filter membrane, place it in the middle of the sieve of the funnel seat, and cover the funnel cover. b. Use petroleum ether filtered through a 0.45um filter membrane to clean the cover of the sample bottle. c. Shake the sample bottle vigorously for at least 1 minute, remove the bottle cap and plastic film, inject 100mL of oil sample and 100mL of clean petroleum ether into a 250mL measuring cylinder, and then stir evenly. d. Connect the side nozzle of the vacuum bottle to the vacuum pump, then pour all the liquid in the measuring cylinder into the filter funnel, and then pour 30mL of filtered petroleum ether into the measuring cylinder, shake the measuring cylinder, and clean the oil on the inner wall. When the liquid in the funnel is reduced to about 5mL, slowly pour the petroleum ether in the measuring cylinder into the funnel along the wall in a spiral direction, and do not disturb the distribution of pollutant particles on the filter membrane. Drain the oil sample, disconnect the vacuum pump power supply, and cover the funnel cover.
e. Loosen the holder clamp, clamp the filter membrane with tweezers, place it on the glass slide, cover it with a glass cover, and then fix it with transparent tape at several points appropriately, and affix the mark and date of the oil sample. 5.5.1.4 Inspection with a microscope
Place the filter plate to be tested on the stage with a light-transmitting lens of the microscope. a.
b. Turn on the power of the microscope and adjust the focal length with the objective lens of the filter plate and the standard cleanliness grade plate respectively. Adjust the position of the filter plate and the standard cleanliness grade plate so that both are displayed half in the observation hole of the microscope. Then turn the standard cleanliness grade plate turntable and read the value of the standard cleanliness grade plate that is closest to the distribution of contaminant particles on the filter plate. d. Move the filter plate and find 4 points in different directions. Read the corresponding values of the standard cleanliness grade plate according to the method in Article 5.5.1.4c, and then take the average value. This value is the cleanliness grade of the oil sample on the filter membrane. The average cleanliness grade is calculated according to the following formula: 4
Where: x-
-the average cleanliness grade, take an integer; x-the cleanliness grade of a certain point;
n-the number of test points.
Test record
Record the measured data in Table 1.
JB/T 7316—1994
x=Z x;/n
Table 1 Test record of hydraulic system of grain combine harvesterMachine model and name:
Manufacturing unit:
Test number:
Automatic rebound performance test of steering gear
Test of number of turns of steering wheel
Steering system pressure test
Test of lifting speed of cutting platform
Test of static settlement of cutting platform
Test of lifting speed of reel wheel
Test items
Height of cutting knife at the highest position above the ground
Height of cutting knife at the lowest position above the ground
Lifting time
Lifting speed|| tt||Descending time
Descending speed
Height of the highest position of the cutter from the ground
Height of the cutting force from the ground after 30 minutes
Static settlement
Height of the highest position of the reel axis from the ground
Height of the lowest position of the reel axis from the ground
Lifting time
Lifting speed
Descending time
Descending speed
Test date:
Test location:
Measured data
Static settlement test of reel
Stability of walking stepless speed change
JB/T 7316—1994
Continued Table 1
Test items
Height of the highest position of the reel axis from the ground
Height of the reel axis from the ground after 30 minutes
Static settlement
Initial position
Final position
Displacement
Unloading grain conveying spiral rotation time test
Control system pressure test
Reel and pick-up hydraulic drive system speed testReel or pick-up hydraulic drive system pressure testTravel speed test
Travel oil replenishment system pressure test
Travel drive system pressure test
Travel hydraulic drive system temperature rise test||tt ||Hydraulic pipeline leakage test
Cleanliness test
Additional instructions:
Reel speed
Pickup speed
Reel system pressure
Pickup system pressure
Time to pass 50m
Travel speed
Steering system
Operation system
Reel system
Pickup system
Travel hydraulic drive system
Operation and steering system
Reel system
Pickup system
Travel hydraulic drive system
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences. This standard is drafted by the Hydraulic Research Institute of the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Yang Linxing and Hong Liangcan. 6
Measurement personnel:
Measurement data
3Average
People's Republic of China
Mechanical industry standard
Hydraulic system of grain combine harvester
Test method
JB/T73161994
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing||t t||Postal code 100044)
Printing sheet 5/8
Format 880×1230
Word count 12,000
First edition April 1995
First printing April 1995
Print run 1-500
Price 8.00 yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66_9Shake the sample bottle vigorously for at least 1 minute, remove the bottle cap and plastic film, inject 100mL of oil sample and 100mL of clean petroleum ether into the 250mL measuring cylinder, and then stir evenly. d. Connect the side nozzle of the vacuum bottle to the vacuum pump, then pour all the liquid in the measuring cylinder into the filter funnel, and then pour 30mL of filtered petroleum ether into the measuring cylinder, shake the measuring cylinder, clean the oil on the inner wall, and when the liquid in the funnel is reduced to about 5mL, slowly pour the petroleum ether in the measuring cylinder into the funnel along the wall in a spiral direction, and do not disturb the distribution of pollutant particles on the filter membrane. Drain the oil sample, disconnect the power supply of the vacuum pump, and cover the funnel cover.
e. Loosen the holder clamp, clamp the filter membrane with tweezers, place it on the glass slide, cover it with a glass cover, and then fix it with transparent tape at several points appropriately, and affix the mark and date of the oil sample. 5.5.1.4 Inspection with a microscope
Place the filter plate to be tested on the stage with a light-transmitting lens of the microscope. a.
b. Turn on the power of the microscope and adjust the focal length with the objective lens of the filter plate and the standard cleanliness grade plate respectively. Adjust the position of the filter plate and the standard cleanliness grade plate so that both are displayed half in the observation hole of the microscope. Then turn the standard cleanliness grade plate turntable and read the value of the standard cleanliness grade plate that is closest to the distribution of contaminant particles on the filter plate. d. Move the filter plate and find 4 points in different directions. Read the corresponding values of the standard cleanliness grade plate according to the method in Article 5.5.1.4c, and then take the average value. This value is the cleanliness grade of the oil sample on the filter membrane. The average cleanliness grade is calculated according to the following formula: 4
Where: x-
-the average cleanliness grade, take an integer; x-the cleanliness grade of a certain point;
n-the number of test points.
Test record
Record the measured data in Table 1.
JB/T 7316—1994
x=Z x;/n
Table 1 Test record of hydraulic system of grain combine harvesterMachine model and name:
Manufacturing unit:
Test number:
Automatic rebound performance test of steering gear
Test of number of turns of steering wheel
Steering system pressure test
Test of lifting speed of cutting platform
Test of static settlement of cutting platform
Test of lifting speed of reel wheel
Test items
Height of cutting knife at the highest position above the ground
Height of cutting knife at the lowest position above the ground
Lifting time
Lifting speed|| tt||Descending time
Descending speed
Height of the highest position of the cutter from the ground
Height of the cutting force from the ground after 30 minutes
Static settlement
Height of the highest position of the reel axis from the ground
Height of the lowest position of the reel axis from the ground
Lifting time
Lifting speed
Descending time
Descending speed
Test date:
Test location:
Measured data
Static settlement test of reel
Stability of walking stepless speed change
JB/T 7316—1994
Continued Table 1
Test items
Height of the highest position of the reel axis from the ground
Height of the reel axis from the ground after 30 minutes
Static settlement
Initial position
Final position
Displacement
Unloading grain conveying spiral rotation time test
Control system pressure test
Reel and pick-up hydraulic drive system speed testReel or pick-up hydraulic drive system pressure testTravel speed test
Travel oil replenishment system pressure test
Travel drive system pressure testbZxz.net
Travel hydraulic drive system temperature rise test||tt ||Hydraulic pipeline leakage test
Cleanliness test
Additional instructions:
Reel speed
Pickup speed
Reel system pressure
Pickup system pressure
Time to pass 50m
Travel speed
Steering system
Operation system
Reel system
Pickup system
Travel hydraulic drive system
Operation and steering system
Reel system
Pickup system
Travel hydraulic drive system
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences. This standard is drafted by the Hydraulic Research Institute of the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Yang Linxing and Hong Liangcan. 6
Measurement personnel:
Measurement data
3Average
People's Republic of China
Mechanical industry standard
Hydraulic system of grain combine harvester
Test method
JB/T73161994
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing||t t||Postal code 100044)
Printing sheet 5/8
Format 880×1230
Word count 12,000
First edition April 1995
First printing April 1995
Print run 1-500
Price 8.00 yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66_9Shake the sample bottle vigorously for at least 1 minute, remove the bottle cap and plastic film, inject 100mL of oil sample and 100mL of clean petroleum ether into the 250mL measuring cylinder, and then stir evenly. d. Connect the side nozzle of the vacuum bottle to the vacuum pump, then pour all the liquid in the measuring cylinder into the filter funnel, and then pour 30mL of filtered petroleum ether into the measuring cylinder, shake the measuring cylinder, clean the oil on the inner wall, and when the liquid in the funnel is reduced to about 5mL, slowly pour the petroleum ether in the measuring cylinder into the funnel along the wall in a spiral direction, and do not disturb the distribution of pollutant particles on the filter membrane. Drain the oil sample, disconnect the power supply of the vacuum pump, and cover the funnel cover.
e. Loosen the holder clamp, clamp the filter membrane with tweezers, place it on the glass slide, cover it with a glass cover, and then fix it with transparent tape at several points appropriately, and affix the mark and date of the oil sample. 5.5.1.4 Inspection with a microscope
Place the filter plate to be tested on the stage with a light-transmitting lens of the microscope. a.
b. Turn on the power of the microscope and adjust the focal length with the objective lens of the filter plate and the standard cleanliness grade plate respectively. Adjust the position of the filter plate and the standard cleanliness grade plate so that both are displayed half in the observation hole of the microscope. Then turn the standard cleanliness grade plate turntable and read the value of the standard cleanliness grade plate that is closest to the distribution of contaminant particles on the filter plate. d. Move the filter plate and find 4 points in different directions. Read the corresponding values of the standard cleanliness grade plate according to the method in Article 5.5.1.4c, and then take the average value. This value is the cleanliness grade of the oil sample on the filter membrane. The average cleanliness grade is calculated according to the following formula: 4
Where: x-
-the average cleanliness grade, take an integer; x-the cleanliness grade of a certain point;
n-the number of test points.
Test record
Record the measured data in Table 1.
JB/T 7316—1994
x=Z x;/n
Table 1 Test record of hydraulic system of grain combine harvesterMachine model and name:
Manufacturing unit:
Test number:
Automatic rebound performance test of steering gear
Test of number of turns of steering wheel
Steering system pressure test
Test of lifting speed of cutting platform
Test of static settlement of cutting platform
Test of lifting speed of reel wheel
Test items
Height of cutting knife at the highest position above the ground
Height of cutting knife at the lowest position above the ground
Lifting time
Lifting speed|| tt||Descending time
Descending speed
Height of the highest position of the cutter from the ground
Height of the cutting force from the ground after 30 minutes
Static settlement
Height of the highest position of the reel axis from the ground
Height of the lowest position of the reel axis from the ground
Lifting time
Lifting speed
Descending time
Descending speed
Test date:
Test location:
Measured data
Static settlement test of reel
Stability of walking stepless speed change
JB/T 7316—1994
Continued Table 1
Test items
Height of the highest position of the reel axis from the ground
Height of the reel axis from the ground after 30 minutes
Static settlement
Initial position
Final position
Displacement
Unloading grain conveying spiral rotation time test
Control system pressure test
Reel and pick-up hydraulic drive system speed testReel or pick-up hydraulic drive system pressure testTravel speed test
Travel oil replenishment system pressure test
Travel drive system pressure test
Travel hydraulic drive system temperature rise test||tt ||Hydraulic pipeline leakage test
Cleanliness test
Additional instructions:
Reel speed
Pickup speed
Reel system pressure
Pickup system pressure
Time to pass 50m
Travel speed
Steering system
Operation system
Reel system
Pickup system
Travel hydraulic drive system
Operation and steering system
Reel system
Pickup system
Travel hydraulic drive system
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences. This standard is drafted by the Hydraulic Research Institute of the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Yang Linxing and Hong Liangcan. 6
Measurement personnel:
Measurement data
3Average
People's Republic of China
Mechanical industry standard
Hydraulic system of grain combine harvester
Test method
JB/T73161994
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing||t t||Postal code 100044)
Printing sheet 5/8
Format 880×1230
Word count 12,000
First edition April 1995
First printing April 1995
Print run 1-500
Price 8.00 yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66_94c Method read the value of the corresponding standard cleanliness grade plate, and then take the average value, which is the cleanliness grade of the oil sample on the filter membrane. The average cleanliness grade is calculated according to the following formula: 4
Where: x-
- average cleanliness grade, take an integer; x-cleanliness grade at a certain point;
n number of test points.
Test record
Record the measured data in Table 1.
JB/T 7316—1994
x=Z x;/n
Table 1 Test record of hydraulic system of grain combine harvester Machine model and name:
Manufacturer:
Test number:
Automatic rebound performance test of steering gear
Test of number of turns of steering wheel
Steering system pressure test
Test of lifting speed of cutting platform
Test of static settlement of cutting platform
Test of lifting speed of reel wheel
Test items
Height of cutting knife at the highest position above the ground
Height of cutting knife at the lowest position above the ground
Lifting time
Lifting speed|| tt||Descending time
Descending speed
Height of the highest position of the cutter from the ground
Height of the cutting force from the ground after 30 minutes
Static settlement
Height of the highest position of the reel axis from the ground
Height of the lowest position of the reel axis from the ground
Lifting time
Lifting speed
Descending time
Descending speed
Test date:
Test location:
Measured data
Static settlement test of reel
Stability of walking stepless speed change
JB/T 7316—1994
Continued Table 1
Test items
Height of the highest position of the reel axis from the ground
Height of the reel axis from the ground after 30 minutes
Static settlement
Initial position
Final position
Displacement
Unloading grain conveying spiral rotation time test
Control system pressure test
Reel and pick-up hydraulic drive system speed testReel or pick-up hydraulic drive system pressure testTravel speed test
Travel oil replenishment system pressure test
Travel drive system pressure test
Travel hydraulic drive system temperature rise test||tt ||Hydraulic pipeline leakage test
Cleanliness test
Additional instructions:
Reel speed
Pickup speed
Reel system pressure
Pickup system pressure
Time to pass 50m
Travel speed
Steering system
Operation system
Reel system
Pickup system
Travel hydraulic drive system
Operation and steering system
Reel system
Pickup system
Travel hydraulic drive system
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences. This standard is drafted by the Hydraulic Research Institute of the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Yang Linxing and Hong Liangcan. 6
Measurement personnel:
Measurement data
3Average
People's Republic of China
Mechanical industry standard
Hydraulic system of grain combine harvester
Test method
JB/T73161994
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing||t t||Postal code 100044)
Printing sheet 5/8
Format 880×1230
Word count 12,000
First edition April 1995
First printing April 1995
Print run 1-500
Price 8.00 yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66_94c Method read the value of the corresponding standard cleanliness grade plate, and then take the average value, which is the cleanliness grade of the oil sample on the filter membrane. The average cleanliness grade is calculated according to the following formula: 4
Where: x-
- average cleanliness grade, take an integer; x-cleanliness grade at a certain point;
n number of test points.
Test record
Record the measured data in Table 1.
JB/T 7316—1994
x=Z x;/n
Table 1 Test record of hydraulic system of grain combine harvester Machine model and name:
Manufacturer:
Test number:
Automatic rebound performance test of steering gear
Test of number of turns of steering wheel
Steering system pressure test
Test of lifting speed of cutting platform
Test of static settlement of cutting platform
Test of lifting speed of reel wheel
Test items
Height of cutting knife at the highest position above the ground
Height of cutting knife at the lowest position above the ground
Lifting time
Lifting speed|| tt||Descending time
Descending speed
Height of the highest position of the cutter from the ground
Height of the cutting force from the ground after 30 minutes
Static settlement
Height of the highest position of the reel axis from the ground
Height of the lowest position of the reel axis from the ground
Lifting time
Lifting speed
Descending time
Descending speed
Test date:
Test location:
Measured data
Static settlement test of reel
Stability of walking stepless speed change
JB/T 7316—1994
Continued Table 1
Test items
Height of the highest position of the reel axis from the ground
Height of the reel axis from the ground after 30 minutes
Static settlement
Initial position
Final position
Displacement
Unloading grain conveying spiral rotation time test
Control system pressure test
Reel and pick-up hydraulic drive system speed testReel or pick-up hydraulic drive system pressure testTravel speed test
Travel oil replenishment system pressure test
Travel drive system pressure test
Travel hydraulic drive system temperature rise test||tt ||Hydraulic pipeline leakage test
Cleanliness test
Additional instructions:
Reel speed
Pickup speed
Reel system pressure
Pickup system pressure
Time to pass 50m
Travel speed
Steering system
Operation system
Reel system
Pickup system
Travel hydraulic drive system
Operation and steering system
Reel system
Pickup system
Travel hydraulic drive system
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences. This standard is drafted by the Hydraulic Research Institute of the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Yang Linxing and Hong Liangcan. 6
Measurement personnel:
Measurement data
3Average
People's Republic of China
Mechanical industry standard
Hydraulic system of grain combine harvester
Test method
JB/T73161994
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing||t t||Postal code 100044)
Printing sheet 5/8
Format 880×1230
Word count 12,000
First edition April 1995
First printing April 1995
Print run 1-500
Price 8.00 yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66_9
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.