The trailer axle is also a precision part to be selected before the owner buys
Generally speaking, the trailer axle is mainly composed of the shaft body, camshaft assembly, brake assembly, shaft end assembly and cotter pin, adjusting arm, various washers, nuts and bolts.
1. Total axial body
It mainly includes axle body, brake bottom plate, spherical bearing seat, air chamber seat, etc., which is located in the central position of the axle and connects the two sides of the wheel ends. It belongs to a kind of semi-finished axle.
The axle body, that is, the bridge rod that the owners often say, connects the wheels through the wheel end assembly at both ends, and connects the frame through the suspension system in the middle. The top of the frame is the main position of the cargo loading. Therefore, the strength of the axle heavy load performance directly determines the bearing capacity of the semi-trailer, and is also an important performance parameter for the owner to choose the axle product.
2, camshaft assembly
It mainly includes camshaft, camshaft head washer, CAM shaft bushing, camshaft skeleton oil seal, camshaft washer, camshaft retaining ring, spherical bearing bolt and nut, spherical bearing, oil cup cover, etc.
3. Brake assembly
It mainly includes brake shoe roller, brake shoe return spring, brake shoe extension spring, brake shoe support, spring fixing pin, brake shoe, brake friction plate and so on.
For the drum axle, the brake shoe is the main friction couple, in addition to having the required strength and stiffness, but also as far as possible to have a high and stable friction coefficient, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity.
4. Wheel end assembly
It mainly includes hub cap, hub cap washer, bearing, hub bolt and nut, hub, brake drum, hub oil seal, dust cap, grease and so on.
Wheel end assembly is the main part of the trailer axle that needs regular maintenance and maintenance, in general, every 50,000 kilometers of the trailer, it is necessary to do a maintenance of the hub bearing to ensure that the bearing, hub, etc., maintain good performance output, maintenance-free axle maintenance cycle can reach 30W or 50W kilometers.
Although the shape of the trailer axle is simple, the number of parts is relatively large and the composition is more complex, any one of the parts has a problem, such as unqualified quality or non-standard installation, may have a direct impact on the overall performance of the axle, and even cause a broken shaft, shaft head fire, tire flying out, brake failure, vehicle lying down and other serious accidents. Therefore, when the owner chooses the trailer axle, it is necessary to investigate the technical and technological level of the manufacturer, and try to choose the veteran manufacturer who is strong and enters the market earlier.
