3. Assembly of sprocket chain

3.1. The cooperation between the sprocket and the shaft must meet the design requirements.

3.2. The geometric center planes of the gear teeth of the driving sprocket and the driven sprocket should coincide, and their offset should not exceed the design requirements. If not specified in the design, it should generally be less than or equal to two thousandths of the center distance between the two wheels.

3.3. When the chain meshes with the sprocket, the working side must be tightened to ensure smooth meshing.

3.4. The sag of the non-working side of the chain should meet the design requirements. If the design does not specify it, it should be adjusted by 1% to 2% of the center distance between the two sprockets.

4. Assembly of belts and pulleys

4.1. The position of the symmetrical center plane of the pulley grooves in the same circuit is: when the center distance is less than 1.2m, it is not greater than 0.3% of the pulley center distance; when it is greater than or equal to 1.2m, it is not greater than 0.5% of the pulley center distance.

4.2. The tension of each transmission belt should meet the requirements of the Foton "Gushen 2" system inspection card.

5. Assembly of hydraulic system

5.1. The pipelines of the hydraulic system must be derusted and cleaned before assembly. Pay attention to dust and rust prevention during assembly and storage.

5.2. Various pipes shall not have dents, wrinkles, flattening, cracks, etc. The bends of the pipes shall be smooth and shall not be twisted.

5.3. The pipelines must be arranged neatly and facilitate the adjustment and maintenance of the hydraulic system.

5.4. The hydraulic oil injected into the hydraulic system should meet the design and process requirements.

5.5. Hydraulic pipelines and components must not leak oil after assembly. In order to prevent leakage, sealing fillers and sealants are allowed to be used during assembly, but they should be prevented from entering the system.

5.6. The hydraulic control system and steering system should be flexible and free of stagnation.

5.7. After the hydraulic system is installed, the operation test should be carried out in accordance with relevant standards.

5.8. Other requirements related to hydraulic systems and hydraulic components should comply with the provisions of GB/T3766.

6. Assembly of electrical system

6.1. Electrical components should be tested and inspected before assembly. Those that fail to meet the standards cannot be assembled.

6.2. The numbers and signals displayed by instruments and indicators should be clear and accurate, and the switches should work reliably.

6.3. Wiring and connections should be carried out strictly in accordance with the electrical assembly drawing requirements.

6.4. The insulation layer of all wires must be intact, and the thin copper wire at the stripping end of the wire must be tightened and tinned if necessary.

6.5. The solder joints must be firm and there must be no desoldering or weak soldering. Solder joints should be smooth and even.

7. Balance

7.1. The threshing drum, continuously variable speed and pulleys with a rotation speed exceeding 400r/min and a weight greater than 5kg should be subjected to static balance or dynamic balance tests, and the balance accuracy should not be lower than G6.3 level.

7.2. The following methods can be used to correct the unbalanced mass of rotating parts.

7.2.1. Use repair welding, threaded connection, etc. to add mass (counterweight).

7.2.2. Use drill pins to remove mass (deduplication).

7.2.3. Change the number and position of balance weights.

7.3. When calibrating by adding mass, it must be fixed firmly to prevent it from loosening or flying out during the work.

7.4 When correcting by removing mass, be careful not to affect the stiffness, strength and appearance of the part.

7.5 For the combined rotary body, after the overall balance is achieved, no parts can be moved or replaced at will.

8. Each adjustment mechanism should ensure easy operation, flexible and reliable adjustment.

The adjustment range of each component should be able to reach the specified limit position.

9. Each control mechanism should ensure light and flexible operation and appropriate tightness.

All control parts that require automatic return should be able to automatically return to their original position after the control force is removed.

10. Final assembly

10.1 During final assembly, the random accessories should also be trial-assembled and the design requirements should be ensured.

10.2 The ground clearance of the rigid header should be consistent, and the difference is allowed to be no more than 15mm.

10.3 The traveling brake device and parking brake device should ensure reliable parking of the harvester.

10.4 The engine should start smoothly and smoothly, and stall completely and reliably; it should be able to start smoothly when the ambient temperature is not lower than -50°C.

10.5 All machine signs should be pasted to designated locations according to design requirements and must not be deflected or uneven.

10.6 Before leaving the factory, the test machine should ensure that the main machine has an operation record of more than 2 hours.