Suspending device for bridge detection working vehicle

Abstract

The invention provides a suspending device for a bridge detection working vehicle. The suspending device for the bridge detection working vehicle mainly comprises a rear axle steel plate spring suspension device, two or four supporting leveling base, an oil suspension device and a stander assembly; the rear axle steel plate spring suspension device consists of two groups of steel plate springs; each group of steel plate springs is formed by mutually overlapping and fixing a plurality of steel plates with different lengths; each supporting leveling base has a framework structure formed by welding a plurality of steel plates; the oil suspension device comprises a suspension oil cylinder, a supporting foot base, a U-shaped base, a connecting plate, a bidirectional hydraulic lock and a three-position four-way reversing valve; and the stander assembly comprises a chassis vehicle frame and an auxiliary vehicle frame. The steel plate spring suspension and the oil suspension are combined organically, so the suspending device for the bridge detection working vehicle plays a role in buffering and damping during running of the bridge detection working vehicle, and rigidly supporting during working of the bridge detection working vehicle; therefore, the contradiction of buffering and damping during running of the bridge detection working vehicle and rigidly supporting during working of the bridge detection working vehicle can be solved effectively. The suspending device for the bridge detection working vehicle has the characteristics of large bearing capacity, rational fixing position, high stability, low contact stress and high reliability.

Description

technical field [0001] The invention relates to a suspension device, in particular to a suspension device for a bridge inspection vehicle suitable for connecting a vehicle axle and a vehicle frame. Background technique [0002] The bridge inspection vehicle is a vehicle that can not only drive on the road, but also carry out inspection, maintenance and reinforcement of bridges. In order to ensure the driving comfort and operating stability of the bridge inspection vehicle, it is required to install a suspension device with both buffering and vibration damping performance during driving and rigid support during operation between the chassis frame and the axle; this can be achieved through It is realized by oil suspension technology, but its structure is complicated, the cost is high, the reliability of use is relatively low, and the maintenance convenience is poor. At present, the bridge inspection vehicle generally adopts the leaf spring suspension device, which can effecti...

AI Technical Summary

Problems solved by technology

In order to ensure the driving comfort and operating stability of the bridge inspection vehicle, it is required to install a suspension device with both buffering and vibration damping performance during driving and rigid support during operation between the chassis frame and the axle; this can be achieved through It is realized by oil suspension technology, but its structure is complicated, the cost is high, the reliability of use is relatively low, and the maintenance convenience is poor.

At present, the bridge inspection vehicle generally adopts the leaf spring suspension device, which can effectively alleviate the impact and vibration of the road surface when it is driving. The deformation degree of the leaf spring is constantly changing, which seriously affects the safety and convenience of the detection operation.

Although there are individual bridge inspection vehicle products that add a set of oil cylinders for sharing the load of the leaf springs by supporting the chassis frame during the inspection work on the basis of the leaf spring suspension, there are also the following obvious deficiencies: First, the oil cylinder cannot be adjusted The pressure oil in the large cavity and the small cavity is effectively blocked, and the bearing capacity is poor, so it cannot really play a role in ensuring the safety of the operation; second, the matching between the fixed position of the cylinder block and its effective stroke is unreasonable, and it is difficult to control it manually. The piston rod protrudes to a reasonable length, that is, if the protruding length is too small, it will be difficult to play a load-bearing role; The leaf spring is reversely stressed, resulting in excessive oil pressure and affecting the use of the leaf spring; third, the contact state between the outer end of the piston rod of the oil cylinder and the axle housing is not ideal, resulting in large contact stress and poor support reliability

Images