It is not easy for peasant friends to dump the family's savings to purchase a farm truck. If the materials are not good, the hidden dangers are endless. For this reason, farmer friends are reminded to buy agricultural vehicles, in addition to the well-known inspection of the appearance of the vehicle and the performance of the engine and chassis, we must also pay attention to check the quality of agricultural vehicles is good and durable, because it involves agricultural vehicles Service life and economy. The frame, commonly known as the "girder", is the base frame of the agricultural vehicle and bears the entire weight of the agricultural vehicle itself and the cargo it carries. The quality of the frame is crucial. Good quality agricultural vehicle longitudinal beams, beams, and beams should all be integrated through structures. If several pieces of overlapped welding are used, they do not meet the technical requirements and should not be purchased. There are “cold plate†and “hot plate†points for the compartment board of agricultural trucks. The mechanical strength and corrosion resistance of cold-rolled steel sheets are much higher than that of hot-rolled steel sheets, and the price is more than 1,000 yuan per ton. Hot plate features a rough surface, even if sprayed with paint, it does not appear to be smooth and flat, and care should be taken when shopping. Chassis housings The transmission housing and rear axle housing of agricultural vehicles are preferably cast from high-quality steel. The surface should be smooth and free from nicks, shrinkage holes and other defects. When you buy, you can use a small hammer to gently tap the surface of the shell. If you give a crisp sound, it means that the material is good; if the sound is hoarse, there may be minor defects such as cracks. The price of tires for a farm vehicle rubber tire accounts for more than 20% of the overall price. The outer surface of the tire can not have cracks, lack of glue, scars, whitening and wrong flowers. Pay attention to the material and structure of the tire cord, which is the skeleton of the tire. In general, nylon cords are more durable than cotton and rayon cords, and radial tires are superior to ordinary bias tires. The quality of paint for agricultural vehicles is not only as important as people's clothing, but also affects the service life of agricultural vehicles. Good agricultural vehicles should adopt advanced baking techniques and require bright paint, uniform paint, and hard paint. You can choose a less important place on the car body and wipe it with a dry cloth. If there is no change in the color and luster of the paint, it means that the paint is used; if the paint color turns white, it is an ordinary spray paint. You can also find a place to paint, nails, and check the hardness of the paint layer. If the lacquer layer peels off and reveals another color, it may be a refurbished backlog of agricultural vehicles, and the price should be greatly reduced.