Small concrete mixer truck has been very common in our daily life, small concrete mixer in the process of use will also have problems, sometimes need to replace accessories, any equipment has its service life cycle, especially for special vehicles like concrete mixer, its accessories do not want to know, but also have a service life, in addition to diligent maintenance It depends on the quality itself, so once the parts of the concrete mixer are damaged and need to be replaced, how can we choose the qualified parts? People who don't know the trade are likely to buy fake and shoddy products when they buy mixer accessories. Today, the concrete mixer manufacturer will tell you about the problems that need to be paid attention to when purchasing mixer accessories.
What problems should be paid attention to when purchasing small concrete mixer accessories?
1、 Attention should be paid to the following problems when purchasing small concrete mixer accessories
1. See if the geometry is deformed
Some small concrete mixer parts are easy to deform due to improper manufacturing, transportation and storage. During the inspection, the shaft parts can be rolled around the glass plate to see if there is light leakage at the joint between the parts and the glass plate to judge whether it is bent; when purchasing the steel plate or friction plate of clutch driven plate of concrete mixer truck, hold the steel plate and friction plate in front of your eyes to observe whether it is warped; when purchasing the oil seal, the oil seal end surface with skeleton should be round, which can fit with the flat glass without bending; The outer edge of the frameless oil seal should be straight and deformed by hand. It should be able to return to its original state after releasing it. In the purchase of various types of pads, should also pay attention to check the geometric size and shape.
2. Check whether there is rust on the surface of parts
The more precise the small-scale concrete mixing parts are, the higher the accuracy of anti-corrosion parts is. Pay attention to the inspection when purchasing. If the parts of the concrete mixer have rust spots, mildew spots, or rubber parts are cracked and lose elasticity, or there are obvious turning tool lines on the journal surface, they should be replaced.
3. See if the rotating parts are flexible
When purchasing the oil pump and other rotating parts assembly, rotate the pump shaft by hand, which should be flexible and free of jamming; when purchasing the rolling bearing of concrete mixer truck, support the inner bearing ring with one hand and rotate the outer ring with the other hand. The outer ring should be able to rotate quickly and freely, and then stop rotating gradually. If the rotating parts do not work well, it means that the internal corrosion or deformation, do not buy.
4. Check whether the joint is smooth
In the process of transportation and storage, due to vibration and collision, burr, indentation, damage or crack often occur in the joint parts of concrete mixer truck, which affects the use of concrete mixer parts. Pay attention to check when purchasing.
5. Check whether the protective surface is in good condition
Most of the small concrete mixer parts are coated with protective coating when leaving the factory. For example, the piston pin and bearing bush are protected by paraffin; the surface of piston ring and cylinder liner is coated with antirust oil and wrapped with wrapping paper; the valves and pistons are sealed with plastic bags after being immersed in antirust oil. If the seal sleeve is damaged, the packing paper is lost, antirust oil or paraffin is lost, it should be returned and replaced.
6. Check whether the parts of bonding concrete mixer are loose
For the accessories composed of two or more parts, the parts are pressed, glued or welded, and there is no looseness between them. For example, the plunger of the oil pump of the concrete mixer truck and the adjusting arm are assembled by pressing; the driven wheel of the clutch is riveted with the steel plate; the friction plate and the steel plate are riveted or glued; the paper filter element framework is glued to the filter paper The wire ends of the electrical equipment of the concrete mixer are welded. If any looseness is found during purchase, it should be replaced.
7. First of all, we should see whether the trademark is complete
The external packaging quality of the authentic small concrete mixer accessories is good, the handwriting on the packing box is clear and the overprint color is bright. The packing box and bag should be marked with the product name, specification and model, quantity, registered trademark, factory name, address and telephone number, etc. some manufacturers also make their own marks on the accessories. Some important components of concrete mixer such as generator, distributor, fuel pump, etc. are also equipped with instruction manual, certificate and inspector's seal to guide users to use and maintain correctly. Purchase should be carefully recognized, in order to prevent the purchase of fake and shoddy products.
8. Check whether there are missing parts in the accessories assembly of small concrete mixer truck
Normal assembly parts must be complete and intact to ensure smooth assembly and normal operation. If some small parts on some assembly parts are missing, the assembly parts will not work or even be scrapped.
There are a lot of spare parts on the small concrete mixer, we must understand its performance and characteristics before purchasing, so that we can buy real good accessories when we buy.