Novel semi-trailer with automatic synchronization steering mechanism

Abstract

The invention relates to a novel semi-trailer with automatic synchronized steering mechanism which comprises a trailer body (1), a tractive girder (3) connected with the trailer body (1) and a driving wheel (6) arranged on the tractive girder (3), wherein the tractive girder (3) is movably connected with the semi-trailer (5) through a rotary connection device (4), a semi-trailer bearing wheel (8) is arranged on the rear end of the bottom of a semi-trailer girder (7), a semi-trailer front bearing wheel (13) is arranged on the front end of the bottom of the semi-trailer girder (7), the semi-trailer front bearing wheel (13) is arranged on the bottom of the semi-trailer girder (7) through a bearing wheel rotation mechanism (9), and the gear-driven synchronized steering mechanism (11) or a guide rod-driven synchronized steering mechanism (12) is arranged between the tractive girder (3) and the front bearing wheel rotation mechanism (9). The novel semi-trailer with automatic synchronized steering mechanism of the invention changes the bearing stress structure of a prior semi-trailer, adds a bearing point to the front part of the semi-trailer, and reduces the length of the suspension part of the semi-trailer, thereby improving the stress condition of the whole trailer, prolonging the service life of the trailer, promoting safety factor, and reducing transportation cost. The invention is very suitable for generalization and application with easy use, easy manufacture or modification.

Description

1. Technical field: [0001] The invention relates to a multi-axle semi-trailer transport vehicle, in particular to a novel semi-trailer with an automatic synchronous steering mechanism. 2. Background technology: [0002] Semi-trailer transport vehicles are an important part of the transportation industry. At present, the trailer part of most domestic semi-trailers has no steering function. The minimum turning radius and maximum channel width of the vehicle are large, and the maneuverability is poor; Rolling, there is a lateral sliding force (the smaller the radius of gyration, the greater the lateral force), this lateral force not only affects the stability of the locomotive and semi-trailer, but also increases the range of motion and increases the requirements for road width conditions. In addition, the centrifugal force is also increased, which increases the difficulty of driving. Due to the limited road width, trucks must perform U-turn operations on the spot; even when e...

AI Technical Summary

Problems solved by technology

This type of axle-steering semi-trailer has a large lateral offset when turning, and the steering follow-up is relatively poor. It still cannot guarantee that the trailer wheels and the steering wheels of the main vehicle rotate around the same instantaneous center, that is, synchronous steering.

There are also a very small number of semi-trailers used for the transportation of defense products, which use a steering device with dynamic hydraulic power and hydrostatic feedback, which can meet the requirements of use, but the structure is complicated and the cost is high, which is not easy to promote

[0003] The second shortcoming of the existing semi-trailer is that the distance between the driving wheel of the main vehicle and the load-bearing wheel of the trailer is too large, and the suspended part is too long. In this way, the load-bearing pressure of the front and rear load-bearing tires will be different due to the difference in the number of load-bearing axles at the front and rear of the trailer. , generally front-heavy and rear-light

In addition, because the suspended part is too long, in order to ensure the necessary safety factor, the girder must be enlarged

In some vehicles, the beam of the trailer is concave down after long-term use because of the insufficient strength of the beam, which changes the stress structure of the trailer and affects the service life of the trailer.

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