Axle head structure of trailer

Abstract

The invention discloses an axle head structure of a trailer. An inner bearing, an outer bearing and a hub are mounted on an axle head of an axle, and inner rings of the inner bearing and the outer bearing can be mounted between an axle head step and an axle head double-nut component by mounting the axle head double-nut component at the end of the axle head. The axle shaft double-nut component comprises a stop washer, an axle head nut, a lock washer and a lock nut which are mounted sequentially from the inside out. An outer ring of the lock washer is provided with a plurality of lock teeth, and two of the lock teeth are bent to lock the lock nut. By the axle head double-nut structure, mounting error of a single-nut structure is avoided, and assembly precision of the bearings is increased. By fastening with the double nuts and fastening and fixing with the lock washer and the stop washer, the bearing mounting structure is guaranteed to be solid, safety of the axle is higher, and service life is longer.

Description

technical field [0001] The invention relates to a trailer axle head structure applied on the trailer axle. Background technique [0002] With the deepening of the market economy, the road transportation industry has made great progress, and the scope of use of ordinary trailers is becoming wider and wider. The trailer axle is a follower axle, which bears the weight of the vehicle and the cargo load, and is used to support the rotation of the tire. It mainly includes the axle body, wheel hub, brake drum, brake shoe assembly, and camshaft assembly. The axle body is divided into axle tubes The hub and the brake drum assembly are assembled on the shaft heads at both ends of the shaft body to perform wheel rotation and braking. The brake shoe assembly is installed in the brake drum, and the brake pads are made of It is made of asbestos-free frictional and environmentally friendly materials. Internal and external bearings are installed between the shaft head and the wheel hub, an...

AI Technical Summary

Problems solved by technology

The existing shaft nut installation method is to put the inner and outer bearings on first, then tighten the nuts to make the bearings generate a certain torque, and then loosen them, so that the bearings have a certain installation clearance, and at the same time, the installation of the cotter pin itself is also difficult. Consider a certain range of installation error, so that the existing shaft head bearing has a wide range of clearance and low precision, which will affect the life of the bearing, and even when the clearance is too large, the bearing will be stressed unevenly, prone to local heating and severe bearing burnout Fault

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