Composite material plate spring structure

Abstract

The invention discloses a composite material plate spring structure. The composite material plate spring structure comprises a plate spring body, upper and lower gaskets at the middle part of the plate spring body, a metal winding lug, and a winding lug bushing; and the plate spring body and the metal winding lug are connected through a winging lug bolt nut module. The composite material plate spring structure is characterized in that projections are directly formed on the upper and lower two sides of the middle part of the plate spring body in a die pressing manner; the projections are matched with through holes of the upper and lower gaskets to position the upper and lower gaskets; and two ends of the plate spring body are connected with the metal winding lug by wedged structures. The composite material plate spring structure has no need to damage the main body for later assembly; two ends of the main body are connected with the winding lug by the wedged structures, so that the bonding can be canceled, the contact area of the metal winding lug and the main body can be reduced, and the weight of the metal winding lug is further reduced; and meanwhile, the wedged connection can strength the connecting strength between the main body and the metal winding lug.

Description

technical field [0001] The invention relates to a commercial vehicle spring suspension structure, in particular to a composite material leaf spring structure. Background technique [0002] At present, most domestic commercial vehicles use longitudinal leaf spring suspensions. Leaf springs are the most widely used elastic components in longitudinal leaf spring suspensions. They are composed of several alloy springs of equal width but unequal length. An elastic beam of approximately equal strength, the leaf spring has a simple structure, low cost, easy maintenance, and can play a guiding role, and the friction between the plates can also have a certain damping effect. However, the leaf springs used in the non-independent suspension of commercial vehicles have the disadvantages of heavy weight and poor comfort, and the leaf springs may break suddenly and cause safety accidents. The development of automobiles pays more and more attention to energy saving, environmental protecti...

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Problems solved by technology

[0005] However, the composite leaf spring structure in the prior art does not realize that the glass fiber of the composite leaf spring body is continuous. After molding into one body, if a hole is drilled in the middle of the body, it is easy to cause stress concentration of the composite leaf spring , so that the intensity decreases

In addition, there needs to be a certain contact area between the end of the body and the metal ear to ensure the adhesive effect. This results in many contact parts between the ear and the body. On the one hand, the metal material is large and the weight is high. On the other hand, the connection strength There is still a risk of extraction

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