Double-layer rolled bumper for semitrailer

Abstract

The invention discloses a double-layer rolled bumper for a semitrailer. The double-layer rolled bumper comprises a bumper body made of a double-layer steel plate, wherein the middle part of the bumper body is provided with a groove, so that the bumper body becomes a U-shaped body; the groove bottom of the groove is in contact with the other side of the bumper body; the bumper body is integrally molded by rolling the double-layer steel plate. The double-layer rolled bumper is integrally molded by rolling the double-layer steel plate, so that the bumper has high anti-collision strength; the bottom of the groove is deepened, so that the anti-collision height is increased, the impact buffering capability is enhanced, and the safety coefficient is increased.

Description

Technical field [0001] The invention relates to a vehicle bumper, in particular to a double-layer roller bumper that can be used in a semi-trailer. Background technique [0002] As a safety device to absorb and alleviate external impact, the bumper plays an extremely important role in protecting the front and rear of the body and protecting the drivers and passengers. Among them, the strength of the bar body plays a decisive role in the entire bumper. The high-strength bar body It is more conducive to the uniform distribution of collision energy, but in the design, it is impossible to increase the strength of the steel by increasing the thickness of the steel unlimitedly. At present, the rear bumper of a semi-trailer is usually bent with C-shaped channel steel or steel plate. It is difficult to increase the buffer by itself and resist impact stress. It only uses the buffer material attached to the beam to achieve the buffer effect, which cannot achieve the expected effect. The a...

AI Technical Summary

Problems solved by technology

[0002] As a safety device to absorb and ease external impact, the bumper plays an extremely important role in protecting the front and rear of the vehicle body and protecting the drivers and passengers. Among them, the strength of the bumper plays a decisive role in the entire bumper, and the high-strength bumper It is more conducive to the uniform distribution of collision energy, but it is impossible to achieve the purpose of increasing strength by increasing the thickness of steel without restriction in the design

At present, the rear bumper of the semi-trailer is usually bent by C-shaped channel steel or steel plate, which is difficult to increase the buffer by itself and resist the impact stress. Only the buffer material attached to the beam is used to achieve the buffer effect, which cannot be used The anti-collision strength, and manual adjustment is required on both edges

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