Vehicle spiral spring and vehicle with same

Abstract

The invention provides a spiral spring for a vehicle and a vehicle with the spiral spring for the vehicle, and the spiral spring for the vehicle comprises a main spring section which is an equal-wire-diameter and equal-pitch spring section; the wire diameter of the auxiliary spring section is gradually increased from one end to the other end, the wire diameter of the other end of the auxiliary spring section is equal to the wire diameter of the main spring section, the pitch of the auxiliary spring section is gradually increased from one end to the other end, and the pitch of the other end of the auxiliary spring section is smaller than the pitch of the main spring section. And the other end of the auxiliary spring section is connected with one end of the main spring section. According to the spiral spring for the vehicle, through the structural design of the equal inner diameter, the variable wire diameter and the variable pitch, the variable stiffness characteristic can be achieved, and then the purposes that the arrangement space is small, and the riding comfort and the control stability of the vehicle are both considered are achieved.

Description

technical field [0001] The present invention relates to the technical field of vehicles, in particular to a vehicle coil spring and a vehicle having the same. Background technique [0002] Most of the existing independent suspension systems of heavy-duty special vehicles mostly use constant-stiffness coil springs as elastic elements, but the constant-stiffness coil springs have the defect that the stiffness value is not variable. In the process of changing from no-load to full-load state of heavy-duty vehicles, the load quality changes greatly. If suspension springs with equal stiffness are used, it is difficult for the whole vehicle to take into account both no-load and full-load offset frequencies in a better state. For example, under a light load state, if the offset frequency is too large, the goods will be damaged and the passengers will be uncomfortable. Under normal circumstances, in order to improve the ride smoothness of the vehicle, a spring with a smaller stiffne...

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Problems solved by technology

[0003] In the patent CN201620632388.1, the inventor adopts variable pitch coil spring technology. The coil spring is divided into three parts with different pitches, that is, the part with small pitch at the left and right ends and the part with large pitch in the middle. The parts with small pitch are merged first, but the change of spring stiffness is realized only through the change of pitch, and the range of spring stiffness change is small. When the vehicle is unloaded, there are still problems that the suspension stiffness is too large and the vehicle bias frequency is large; in addition , the vertical height of the suspension spring is large, occupying a large vertical space, which is not conducive to vehicle layout

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