Agricultural machine hand how to buy agricultural machinery parts

In the slack season, when the machine operator is also maintaining the agricultural machinery, pay attention to the following aspects when purchasing agricultural machinery parts:

First, see if the specification is suitable. Most agricultural machinery parts have the specified model and technical parameters. If you choose the drive belt, you should pay attention to the model and perimeter; when choosing the bearing, you should pay attention to the bearing type; when you purchase the needle valve, you should pay attention to the fog cone angle and the diameter of the nozzle hole; when you purchase the piston and piston ring, The standard size and size should be distinguished so as to avoid undue losses caused by wrong purchases.

Second, see if the logo is complete. To purchase products produced by regular companies, not only the quality of formal products is good, but also the writing on the packaging box is clear, the color of overprinting is clear, and the product name, model number, quantity, registered trademark, factory name and address are marked on the packing box and box. Numbers, etc., Some production companies also mark the accessories. Some large or important parts are shipped with instruction manuals to guide users in proper use and maintenance. Do not buy fake and shoddy products when purchasing.

Third, see whether the geometric deformation. Some parts are easily deformed due to improper manufacturing, transportation, and storage. During inspection, the shaft parts can be attached along the glass plate to see whether there is light leakage at the fitting place to judge whether it is bent; when selecting the clutch plate or friction plate, the steel plate and friction plate can be observed in front of the eyes Whether it is warped or not; when the oil seal is selected, the end face of the oil seal with the skeleton should be perfectly round, and it can be attached to the flat glass without deflection. The outer edge of the non-skeletal oil seal should be straightened, and it should be deformed by hand. After loosening the hand, it should be able to restore the original shape; when purchasing various kinds of liners, check the geometric dimensions and shape.

Fourth, see if the joint is flat. During handling and storage of spare parts, vibrations and bumps often cause burrs, indentations, breakages, or cracks that affect the normal use of parts. Pay attention to inspection when purchasing.

Fifth, to see whether the surface of parts rust. Qualified parts surface, both with a certain degree of precision and high surface roughness. The more important the spare parts, the higher the surface roughness, the more rigorous and anti-corrosion on the packaging. If the parts are found to have rust spots, dew spot or rubber pieces cracked, lose elasticity, or have obvious turning patterns on the journal surface, they should be replaced.

6. See if the protective surface is intact. Most parts are coated with a protective layer at the factory, such as the piston pin, and the shaft pad is protected with paraffin; the surface of the piston ring and the cylinder sleeve is coated with anti-rust oil and wrapped in wrapping paper; the plunger, the outlet valve, and the needle valve are submerged. The rust oil is sealed with plastic sleeves; valves, pistons, and other impregnated rust-proof oils are sealed in plastic bags. If you find that the seal sleeve is damaged, the wrapper is missing, or the rust-proof oil or paraffin is lost during purchase, you will need to return it.

Seven, see whether the plastic parts and other loose connections. No loosening is allowed between two or more parts combined parts, such as oil pump plunger and adjusting arm through press-fit assembly; clutch driven hub and steel riveted combination, friction plate and steel sheet riveted or glued Then, the paper filter core skeleton and the filter paper are glued together; if there is looseness during the purchase, they should be exchanged.

Eight, see if the rotating parts are flexible. When selecting the oil pump and hydraulic pump assembly, when turning the pump oil by hand, it should be flexible and without any stagnation; when selecting the fuel injection pump assembly, the plunger should be able to rotate flexibly in the plunger sleeve when the adjustment arm is toggled. When pushing the roller, the plunger should be able to automatically return under the action of the spring; when selecting the roller bearing, one hand supports the inner ring of the shaft, the other hand rotates the outer ring, and the outer ring should be able to rotate freely and then gradually stop.

Nine, see if the assembly components are complete. When selecting the injector assembly, check whether there is any leakage of the small parts such as the sealed copper mat of the oil return joint and the small steel ball in the tappet; when selecting the fuel injection pump assembly, you should check the plunger sleeve locating screw seal Whether the small parts such as the positioning pin of the wheel body are missing or not.

Ten, see whether the assembly mark is clear. In order to protect the assembly relationship of the mating parts in accordance with the technical requirements, assembly marks are engraved on the surface of some parts. If there is no mark or mark is fuzzy, it will bring difficulties to the assembly.

Eleven, to see whether the surface wear and tear. If the parts have wear marks on the mating surface, or the painted parts poke out of the surface paint and find the old paint, they are mostly used parts and can be returned.

Twelve, to see if the surface hardness is up to standard. The hardness of the surface of the fittings has requirements. After the purchase is determined and agreed with the merchant, the hacksaw blade can be used to test the scratches. The hardness of the scratch-free and scratch-free pattern is high; the hardness of the scratches is slightly higher. Hardness with marked traces is low.

Salon Shampoo Chair is electric and not electric. We are mainly electric, all configurations are exported, all water parts are kept for 5 years, medical motor, rotary lift is only 30 dB, electric lift, flat, guest A series of operations such as hair cutting, shampooing, and care can be completed in one bed! With 2 motors, we only use high quality materials and we own our private factory. Features: 1, sponge molding, difficult to change the shape 2, bed back and human body fit, user-friendly design, more comfortable 3, ceramic basin, hard and strong 4, plastic pillows, more comfortable 5, stainless steel faucets, water jets, faucets, rust-proof and durable 6, good quality synthetic leather, strong and durable 7, Leather color, various colors available for customers to choose 8, Tame with a footrest, more convenient 9, This wide shampoo bowl is designed to avoid water splashes Happening. 10, metal coated base, waterproof and stable 11, The bed can be rotated on both sides, shampoo and beauty can be completed on the shampoo bed, luxurious and convenient 12, headrest adjustable 13, electric rotating, undulating, easy to control

Salon Shampoo Chair

Salon Shampoo Chair,Salon Massage Recliner Shampoo Chairs,Salon Furniture Shampoo Chairs,Salon Electric Shampoo Chair

MING MEI ROYAL SPA FURNITURE , https://www.mingmeibeauty.com