LY/T 3238-2020Forestry machinery - Gasoline engine powered movable hand operated fertilizer by hole drilling (English PDF)

6.2.1 Requirements

The gasoline engine supporting the digging and fertilizing machine should meet the requirements of JB/T 5135.1.

6.2.2 Inspection

The performance test of the gasoline engine is carried out in accordance with the regulations of JB/T 5135.2 and JB/T 5135.3.

Overall performance

6.3.1 Starting performance

6.3.1.1 Requirements

The starting performance of the digging fertiliser applicator should meet the requirements of JB/T 5135.1.

6.3.1.2 Inspection

The start performance test of the digging fertilizer applicator is carried out in accordance with the regulations of JB/T 5135.2.

6.3.2 Minimum no-load stable speed

6.3.2.1 Requirements

The minimum no-load stable speed of the digging fertilizer applicator should meet the requirements of JB/T 5135.1.

6.3.2.2 Inspection

The minimum no-load stable speed test of the digging fertilizer applicator is carried out in accordance with the regulations of JB/T 5135.2.

6.3.3 High speed stability

6.3.3.1 Requirements

After the digging and fertilizer applicator operates continuously and stably for 5 minutes at the highest no-load speed (with a drill bit, no-load simulation working state), there should be no difference the fasteners should not be loosened, and the speed fluctuation rate should not exceed ±10% of the calibration value.

6.3.3.2 Inspection

Fix the drill tip of the drill bit through the drill tip rotating fixed platform, and then make the digging and fertilizer applicator run continuously for 5 minutes at the highest no-load speed.

Observe whether there is abnormal noise, whether the fastener is loose, use a tachometer to measure and calculate the speed fluctuation rate.

6.3.4 Operational stability

6.3.4.1 Requirements

When the digging and fertilizer applicator is working, the support should be firm and reliable, and it should not be twisted with the rotation of the drill bit. When working on a slope, there should be no slipping or slipping.

Tipping phenomenon.

6.3.4.2 Inspection

Observe the stability of the digging fertilizer applicator in the reliability test of 6.6.2.

6.3.5 Net quality of the whole machine

6.3.5.1 Requirements

The net quality of the digging fertilizer applicator (the fuel tank is empty and the fertilizer tank is empty) should meet the requirements of Table 1.

6.3.5.2 Inspection

Use a weighing instrument to measure.

6.3.6 Verticality of digging

6.3.6.1 Requirements

The angle between the hole dug by the digging and fertilizing machine and the horizontal plane of the pit mouth should be within the range of 90°±5°.

6.3.6.2 Inspection

Place a wide-seat square ruler suitable for the depth and diameter of the pit in the excavated pit, fit the straight edge to the side wall of the pit, keep it drooping, and set the angle of inclination.

The instrument is placed on the wide base of the wide base square, and placed along the radial direction of the pit, and then press the value lock key to take the reading. Measure at different positions along the circumference of the pit mouth Find the average of the three places.

6.3.7 Work efficiency

6.3.7.1 Requirements

Under the conditions of 6.1, digging pits and fertilizing operations should be no less than 260 pits per hour.

6.3.7.2 Inspection

At the test site that complies with 6.1, actually operate the machine to dig pits and fertilize, and record the 1 h operation time (excluding transfer and preparation Working hours for digging and fertilizing) The number of pits for digging and fertilizing.

6.3.8 Airtightness of the whole machine

6.3.8.1 Requirements

The sealing performance of the whole machine should be good, and there should be no leakage of gasoline, oil and grease.

6.3.8.2 Inspection

Wipe with clean test paper or facial tissue during the test in 6.3.3.2, and check visually.

Main parts performance

6.4.1 Fertilizer box

6.4.1.1 Requirements

The fertilizer tank should be resistant to fertilizer corrosion, and its volume should not be less than 0.02 m3.

6.4.1.2 Inspection

Visually check the corrosion resistance of the fertilizer tank. Measure and calculate the volume of the fertilizer tank.

6.4.2 Bottomless discharge box

6.4.2.1 Requirements

The bottomless discharge box should be equipped with a fertilizer quantitative scale value.

6.4.2.2 Inspection

Visually check whether there is a fertilizer quantitative scale value.

6.4.3 Fertilizer quantitative control device

6.4.3.1 Requirements

The digging fertilizer applicator should be equipped with a fertilizer quantitative control device, which should be able to ensure that the error of each discharge is not greater than ±8 g.

6.4.3.2 Inspection

Put the fertilizer into the feeding box, adjust the fertilizer quantitative control device to a certain amount of feeding, and perform the actual operation for the feeding, and collect the released fertilizer.

Weigh, calculate the error from the set value. The test is carried out three times and the average value is taken.

6.4.4 Guide trough

6.4.4.1 Requirements

The guide trough should act simultaneously with the discharge box. The guide trough should be able to introduce the fertilizer discharged from the bottomless discharge box into the pit in time.

Take it back quickly.

6.4.4.2 Inspection

In actual operation, observe whether the guide trough is flexible, reliable, accurate and complete.

6.4.5 Clutch

6.4.5.1 Requirements

The clutch should be combined smoothly and separated thoroughly, and the combined speed should not be lower than 1.25 times the idle speed value recommended by the manufacturer.

6.4.5.2 Inspection

Start the digging and fertilizer applicator, observe the work of the clutch, and measure the speed of the gasoline engine when the clutch is engaged and the drill starts to rotate.

6.4.6 Handle

6.4.6.1 Requirements

The digging and fertilizing machine should have an operating handle that can be held by both hands separately, and the surface of the handle should be equipped with a buffer cover. Each grip area the length of the domain should be greater than 120 mm, and the perimeter of the handle section (including the buffer sleeve) should be in the range of 60 mm to 110 mm. Its structural form should be accurate Ensure that the operator can fully hold the handle when wearing protective gloves. The handle should not be significantly deformed after the test method in 6.4.6.2.

6.4.6.2 Inspection

Use a vernier caliper and a ruler to measure the size of the grip area and the grip diameter.

After hanging a 30 kg weight in the grip area, let it stand for 0.5 h, and observe whether there is obvious deformation at the handle.

6.4.7 Shutdown device

6.4.7.1 Requirements

The digging and fertilizer applicator should be equipped with a shutdown device at a location that can be quickly and easily touched by the operator during operation. The device should be able to work.

Reliable, and the logo is eye-catching, and its color should be clearly contrasted with the background color.

6.4.7.2 Inspection

Visually inspect the stopping device, and actually start and stop for 10 cycles, and observe whether the stopping device can still work normally.

6.4.8 Throttle trigger

6.4.8.1 Requirements

The throttle trigger of the digging fertiliser applicator should be able to automatically reset to the idle state and remain locked after letting go. The position of the throttle trigger should ensure operation the operator can easily hook and release the trigger when wearing labor protection gloves to hold the handle of the robot.

6.4.8.2 Inspection

Actually operate the machine for inspection.

6.4.9 Bracket

6.4.9.1 Requirements

After the support of the digging fertilizer applicator is tested according to the method of 6.4.9.2, the support should not have destructive damage or unrecoverable distortion, and the support should be There should be no deformation greater than 3 mm at the end of the frame.

6.4.9.2 Inspection

The test is carried out as follows on a field conforming to 6.1...