Special A type rack type air spring rear suspension for large-scale bus

Abstract

The invention relates to a special A-type frame air spring rear suspension for a large coach, comprising an A-type frame; the front end of the A-type frame is connected with a link assembly; the two sides of the rear end of the A-type frame are sequentially provided with an air spring assembly and an absorber; the A-type frame is provided with a flexible connection end bracket of a height control valve; the rear end of the A-type frame is connected with a transverse stabilizer bar. The invention has simple structure, light weight, little peculiar parts, multiple general parts and low cost; and the rear suspension is easy to manufacture, and the axle location is accurate and reliable without regulation.

Description

technical field [0001] The invention relates to an air spring rear suspension, in particular to a special A-frame air spring rear suspension for large passenger cars. Background technique [0002] Air suspension was invented in the 1930s and became popular in foreign countries 40 years later. It first benefited from the application of vacuum radial tubeless tire technology to the air bag. The self-closing air bag port technology makes the sealing reliability of the air bag and service life are guaranteed. [0003] At present, the world's large tire manufacturers all have air bag series products, followed by the development of technologies such as height control valves and other air suspension system supporting valves and pipeline components. The general accessories for the above-mentioned air suspension have been mass-produced and supplied by a small number of well-known multinational groups in the world. The output has increased and the price has been reduced. [0004] Th...

AI Technical Summary

Problems solved by technology

There are problems, (1) the structure is complex and heavy, (2) the price is expensive, (3) the installation and operation are cumbersome, and the efficiency of the final assembly process will be reduced during mass production

When this type of guidance system is used in a truck chassis, its installation includes: pre-installation, six adjustments, welding positioning adjustment gasket, and final installation. After being introduced into China and used on a full-load bus, the adjustment is more cumbersome and expensive. work

The installation of the suspension must be welded, and it cannot adapt to the production process of a fully loaded bus after painting

(4) This type of guidance system was originally used for heavy-duty trucks with bad road conditions. Its multi-axle axles require large dynamic capacity. When installed in high-end buses in China, the body has the feeling of floating boats shaking freely, which affects ride comfort.

(5) It is easy to cause inaccurate axle positioning and uneven tire wear

[0007] At present, domestic bus companies only purchase a complete set of air suspension parts from the domestic agents of North American multinational groups, and install the air suspension on their own buses according to the training materials provided by the manufacturers. As a result, we have not formed an independent development for a long time. ability to hang

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