Semi-trailer with automatic synchronization steering mechanism

Abstract

The invention relates to a semi-trailer with an automatic synchronous steering mechanism, comprising a main vehicle [1], a traction girder [3] connected to the main vehicle [1] and a power wheel [6] on the traction girder [3], the traction The girder [3] is movably connected with the semi-trailer [5] through a rotating connection device [4], installed at the rear end of the bottom of the semi-trailer girder [7] and has a semi-trailer load-bearing wheel [8] installed at the bottom front end of the semi-trailer girder [7]. There is a front load-carrying wheel [13] of the semi-trailer, and the front load-carrying wheel [13] of the semi-trailer is installed on the bottom of the main beam [7] of the semi-trailer by the load-bearing wheel turning mechanism [9], and the traction girder [3] and the front load-bearing wheel turning mechanism [ 9] is connected with a synchronous steering mechanism [11] driven by a gear, or connected with a synchronous steering mechanism [12] driven by a guide link. The semi-trailer with automatic synchronous steering mechanism of the present invention changes the load-bearing and force-bearing structure of the existing semi-trailer, increases the load-bearing point at the front of the trailer, and reduces the length of the suspended part of the trailer, thereby improving the force of the whole vehicle and increasing the weight of the vehicle. The service life is improved, the safety factor is improved, the transportation cost is reduced, the use is very convenient, and it is easy to manufacture or modify, which is very conducive to popularization and implementation.

Description

1. Technical field: [0001] The invention relates to a multi-axle semi-trailer transport vehicle, in particular to a 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 enterin...

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.

Images