(1) a trapezoidal beam
Figure 4
is the original vehicle trapezoidal girder beam, there are two parallel side members, this 2 Article side members connected by several cross. Even today, the trapezoidal beam-type frame is the most common girder heavy vehicle type. Typically, large truck frame using channel C-shaped cross section (FIG. 4), and the Toyota Land Cruiser (Land Cruiser) SUV like frame longitudinal and transverse eccentric usually box-shaped channel (FIG. 5), i.e., 2 binding of a C-shaped channel.
Figure 5
(2) frame-beam
Figure 6
[ 123] frame-like beam (FIG. 6) is similar in structure to the trapezoidal beam, its body structure between the trapezoidal girders and monolithic body, a development is trapezoidal girders for a passenger car. Frame-side frame girder have a large eccentric portion, so that the beam constituting the frame of the vehicle body along. Sectional shape of the portion of the side rail will change in different parts in order to ensure that have a low level of the chassis. This frame-beam initially widely used in Crown S130 (Crown) models, but this beam will eventually be phased out, to be replaced by a unibody structure.
(3) back of formula beam (FIG. 7)
Figure 7
Such beam configuration of the vehicle trunk, shaped like a single box channel that substantially the same function with other forms of beam. This beam on the use of too early sports car Toyota 2000GT.
pipe pieces (4) of formula steel girder (FIG. 8)
Figure 8
This beam welded together constitute its structure is like a bird cage, this beam is not used for ordinary vehicles. Because the chassis and body are constructed of steel tube, it is not entirely beam-type frame. This structure is typically used car.
(Continued)
(Qiu Lin)