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.

自上料搅拌车配件选购需注意哪些问题？

What problems should be paid attention to when purchasing small concrete mixer accessories?

一、自上料搅拌车配件选购时需要注意以下问题

1、 Attention should be paid to the following problems when purchasing small concrete mixer accessories

1、看几何尺寸有无变形

1. See if the geometry is deformed

有些自上料搅拌车配件零件因制造、运输、存放不当，易产生变形。检查时，可将轴类零件沿玻璃板滚动一圈，看零件与玻璃板贴合处有无漏光来判断是否弯曲；选购混凝土搅拌车离合器从动盘钢片或摩擦片时，可将钢片、摩擦片举在眼前观察其是否翘曲；在选购油封时，带骨架的油封端面应呈正圆形，能与平板玻璃贴合无挠曲；无骨架油封外缘应端正，用手握使其变形，松手后应能恢复原状。在选购各类衬垫时，也应注意检查几何尺寸及形状。

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、看零件表面有无锈蚀

2. Check whether there is rust on the surface of parts

合格的自上料搅拌车零配件表面，既有一定的精度又有铮亮的光洁度，越是重要的零配件，精度越高，包装防锈防腐越严格。选购时应注意检查，若发现混凝土搅拌车零件有锈蚀斑点、霉变斑点或橡胶件龟裂、失去弹性，或轴颈表面有明显车刀纹路，应予调换。

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、看转动部件是否灵活

3. See if the rotating parts are flexible

选购机油泵等转动部件总成时，用手转动泵轴，应感到灵活无卡滞；选购混凝土搅拌车滚动轴承时，一手支撑轴承内环，另一手打转外环，外环应能快速自如转动，然后逐渐停转。若转动部件转动不灵，说明内部锈蚀或产生变形，不要购买。

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、看结合部位是否平整

4. Check whether the joint is smooth

自上料搅拌车零配件在搬运、存放过程中，由于振动、磕碰，常会在结合部位产生毛刺、压痕、破损或裂纹，影响自上料搅拌车零件的使用。选购时应注意检查。

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、看防护表层是否完好

5. Check whether the protective surface is in good condition

大多数自上料搅拌车零件在出厂时都涂有防护层。如活塞销、轴瓦用石蜡保护；活塞环、缸套表面涂防锈油并用包装纸包裹；气门、活塞等浸防锈油后用塑料袋封装。选购时若发现密封套破损、包装纸丢失、防锈油或石蜡流失，应予退换。

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、看胶接混凝土搅拌车零件有无松动

6. Check whether the parts of bonding concrete mixer are loose

由两个或两个以上零件组合成的配件，零件之间是通过压装、胶接或焊接的，它们之间不允许有松动现象，如混凝土搅拌车油泵柱塞与调节臂是通过压装组合的；离合器从动轮与钢片是铆接结合的，摩擦片与钢片是铆接或胶接的；纸质滤清器滤芯骨架与滤纸是胶接而成的；混凝土搅拌车电器设备的线头是焊接而成的。选购时若发现有松动，应予调换。

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、要看商标标识是否齐全

7. First of all, we should see whether the trademark is complete

正宗自上料搅拌车配件产品的外包装质量好，包装盒上字迹清晰，套印色彩鲜明。包装盒、袋上，应标有产品名称、规格型号、数量、注册商标、厂名厂址及电话号码等等，有的厂家还在配件上打出自己的标记。一些重要混凝土搅拌车部件如发电机、分电器、喷油泵等，还配有使用说明书、合格证和检验员章，以指导用户正确使用维护。选购时应仔细认清，以防买了假冒伪劣产品。

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、看自上料搅拌车配件总成部件有无缺件

8. Check whether there are missing parts in the accessories assembly of small concrete mixer truck

正规的总成部件必须齐全完好，才能保证顺利装配和正常运行。一些总成部件上的个别小零件若漏装，将使总成部件无法工作甚报废。

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.

自上料搅拌车上的零配件有很多，大家在购买之前一定要了解其性能、特点，这样在购买的时候才能买到货真价实的好配件。

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.