Stepping type walking mechanism for main bridge construction, thrust device and construction method of stepping type walking mechanism

Abstract

The stepping type walking mechanism for main bridge construction comprises a suspension truss, the suspension truss is provided with a suspension hole and a clamping plate, and the clamping plate is provided with a strip-shaped hole; pneumatic spring rods, fulcrum hydraulic rods and eccentric hydraulic rods are riveted to the bottom face of the suspension truss through hinges, the eccentric hydraulic rods are riveted to walking wheels, the walking wheels are connected with rear driving wheel shafts, the rear driving wheel shafts are provided with H-shaped rail wheels and driven belt wheels, the driven belt wheels and the driving belt wheels are fixedly connected with a driving shaft of a driving motor, and the suspension truss is provided with a power source and braking system; the thrust device comprises a thrust rod and a trapezoidal groove plate which are used in cooperation with the strip-shaped holes, the trapezoidal groove plate is provided with a short reinforcement cage, a shock absorber and an electric telescopic rod, and the electric telescopic rod is connected with an arc-shaped push block and a high reinforcement cage; the invention further provides a corresponding construction method. By means of front-and-back swing type movement of the suspension truss, elastic thrust of intermittent active clutch is provided, and the suspension truss walking mechanism is stable in walking, not prone to slipping, rapid in thrust stopping, suitable for being applied to rainy and snowy days and wet and slippery bridge surfaces and high in safety.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a step-by-step traveling mechanism, a thrust device and a construction method for main bridge construction. Background technique [0002] During bridge construction, especially the construction of the main bridge, the stability of the walking truss often affects the construction efficiency and construction safety. The existing walking truss still has the following deficiencies: 1. When walking, it mainly relies on the friction of the walking wheels on the track to move forward. It is easy to stop while walking, which affects work efficiency; 2. The driving device directly drives the running wheel to move, and the wheel is prone to slipping, which has poor reliability. Therefore, the walking stability and safety of the existing walking truss still need to be improved. [0003] The stability and safety of the walking truss often depend on the thrust mechanism. How to s...

AI Technical Summary

Problems solved by technology

Generally speaking, the driving mode of the existing walking truss and the thrust action of the thrust mechanism are often independent of each other. The bridge design requires careful layout, which virtually increases the difficulty of construction.

Images