Steering pull rod system, multi-bridge steering system and engineering vehicle

Abstract

The invention discloses a steering pull rod system, a multi-bridge steering system and an engineering vehicle. The steering pull rod system comprises pull rods and rocking bars, wherein each rocking bar can be hinged on a chassis; a power output end of each rocking bar can be connected with a steering bridge; the pull rods are connected between power input ends of the rocking bars; the pull rods are telescopic connecting rods; or / and the rocking bars are telescopic connecting rods. The pull rods or / and the rocking bars are the connecting rods with adjustable length, so that when steering is performed in one steering mode, the pull rods or / and the rocking bars can have appropriate length, and the requirement of the steering mode is met; when steering is performed in another steering mode, the state of the steering pull rod system is changed; and the pull rods or / and the rocking bars have appropriate length by adjusting the length of the pull rods or / and the rocking bars, and the steering requirement in the steering mode is met. Therefore, the steering pull rod system can be applied in a plurality of steering modes simultaneously and is higher in adaptability.

Description

technical field [0001] The invention relates to the steering technology, in particular to a steering rod system, and also relates to a multi-axle steering system including the steering rod system and an engineering vehicle including the multi-axle steering system. Background technique [0002] At present, wheeled large-tonnage cranes or other engineering vehicles usually include a chassis and a multi-axle steering system. Due to the multi-axle steering system, the adaptability and passing performance of the working vehicle can be greatly improved. [0003] The multi-axle steering system includes a steering gear, a steering tie rod system and multiple steering axles. The steering linkage system includes a plurality of tie rods and a plurality of rockers; the plurality of rockers are usually hinged on the chassis and arranged in the front-rear direction. Each rocker corresponds to a steering bridge, and the power output end of each rocker is connected to the corresponding st...

AI Technical Summary

Problems solved by technology

In this way, when the steering rod system meets the needs of one steering mode, it may not be able to take into account the needs of other steering modes

If the steering link system satisfies the all-wheel steering mode, in the crab steering mode, the steering link system cannot ensure that each steering axle has an appropriate steering deflection angle, so that the tires on one steering axle are the same as those on other predetermined steering axles. There is an angular misalignment between the tires

As the number of steering axles increases, this angle deviation will become larger and larger, resulting in severe tire wear in crab steering mode, and even crab steering cannot be performed due to severe tire deformation under heavy load

Therefore, the existing steering rod system has the problem of poor adaptability

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