Two-stage linkage type automatic retractable speed bump

Abstract

The invention belongs to the field of road safety, and discloses a two-stage linkage type automatic retractable speed bump. A front speed bump bulges on the ground, the upper end surface of a rear speed bump is flush with the road surface, left and right sides between the front speed bump 13 and the rear speed bump 1 are each connected with a set of hydraulic transmission device. When a vehicle passes the front speed bump at a specified speed, the rear speed bump does not bounce, so that driving comfort of the driver is improved, and when the vehicle passes through the front speed bump at a speed exceeding the specified speed, the impulse of the impact on the front speed bump is transferred from the hydraulic transmission devices to the rear speed bump, and therefore the rear speed bump breaks through the spring pin threshold and bounces to cause second-stage deceleration. The lifting and lowering of the rear speed bump are automatically adjusted through a hydraulic circuit, so that the driving vehicle driving at the specified speed can be effectively ensured, and the situation that the vehicle speeds continually or accelerates suddenly after the vehicle passes the front speed bumpis prevented.

Description

technical field [0001] The invention relates to the field of road safety, and mainly relates to a road speed bump used for road safety control. Background technique [0002] In the road transportation system, speed bumps can reduce the speed of motor vehicles and achieve the purpose of reducing traffic accidents. At present, the most widely used is the hump speed bump, which is made of rubber and additives. The longitudinal section is arc-shaped and the surface is patterned. Its advantages are reliability, durability, and low cost, and it is suitable for large-scale production and use; its disadvantage is that it is not targeted, and cannot be adjusted according to road traffic conditions, and cannot meet the driver's requirements for comfort. Damage to vehicle parts. [0003] In response to this problem, an inductive reversible speed bump is proposed in the Chinese patent publication No. CN204059225U. This is a speed bump with a high degree of intelligence, which can auto...

AI Technical Summary

Problems solved by technology

However, due to the use of sensors and motors in its design, the production cost and power consumption are greatly increased, which affects the economy and practicability of the speed bump. At the same time, the complex structural design is not easy to install and maintain.

Another example is the automatic lifting road deceleration belt proposed in the Chinese patent publication No. CN104594244A. This deceleration belt can also automatically adjust the height of the deceleration belt according to the speed of passing vehicles, but due to the application of sensors and control systems in its design, it is greatly Increased manufacturing cost, not easy to be widely used

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