Fixed rotating shaft type hydraulic opening bridge

Abstract

The invention relates to a fixed rotating shaft type hydraulic opening bridge, in particular to a vertically rotatable type opening bridge, belonging to the field of bridges. In the design, hydraulic oil cylinders and a main bearing mechanism are connected between the back part of a main steel bridge and a foundation, and a balance weight is arranged at the back end of the main steel bridge. When the main steel bridge is lifted, the hydraulic oil cylinders are controlled to shrink so as to provide a tensile force to the main steel bridge; because the balance weight is arranged at the back end of the main steel bridge, a force moment jointly generated by the tensile force and the balance weight is more than that generated by the weight of the main steel bridge per se, the main steel bridge is lifted stably, otherwise, the main steel bridge can be descended stably; even if one of the hydraulic oil cylinders goes wrong, the safety of the main steel bridge in the lifting or descending process can also be ensured; when the main steel bridge is horizontally descended to a bridge pier, an aligning seat, a buffering rubber and a lower bearing seat on the bridge pier are stably aligned and self-locked into a closed state; an adjustable pivot design of a main bearing mechanism can automatically compensate the twisting movement of main shafts caused by decentraction of the two main shafts, and thus, the safety and the stableness for starting and stopping the main steel bridge are thoroughly ensured.

Description

technical field [0001] The invention relates to a fixed rotating shaft type hydraulic opening bridge, which belongs to the field of bridges, and in particular relates to a vertical rotation type opening bridge. Background technique [0002] At present, the vertically rotating open bridge that has used hydraulic cylinders rotates through the fixed shaft, and the hydraulic power system is used to push the bridge to open through the oil cylinder. This type improves the appearance of the bridge and saves space. The fixed shaft generally uses maintenance-free bearings. , This kind of bearing has good corrosion resistance, which greatly reduces the maintenance process of the bridge and reduces the maintenance cost. There are several types of oil cylinder setting positions: one is that the hydraulic oil cylinder is placed at the rear of the bridge, and the opening bridge is opened by pulling the oil cylinder. However, when the opening bridge is opened and placed to the level, the ...

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Problems solved by technology

However, when the opening bridge is opened and placed to the level, the pressure of the hydraulic cylinder is relatively high due to the absence of a balance weight, and the requirements for the hydraulic cylinder are relatively high. Once there is a problem with the hydraulic cylinder, it will cause a great safety accident under the action of the gravity of the opening bridge; The other is to install an oil cylinder before and after the fixed shaft, so that when the opening bridge is opened or lowered, one of the oil cylinders is pulled and the other is pressed, and the pressure decreases. cause serious safety accidents

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