Protective quick lifting device for road construction bridge

Abstract

The invention discloses a protective rapid lifting device for a road construction bridge. The protective rapid lifting device comprises a base, wherein a lifting assembly is mounted at the top end ofthe base, and the lifting assembly comprises a lifting frame, a pulley block, motors, a transmission wheel, a steel cable, a limiting arc-shaped petal, a sliding base, a first sliding block, a spring,a sliding hole, a pulling rod, a rotating block, a rotating sleeve and a pulling handle. The protective rapid lifting device is scientific and reasonable in structure and safe and convenient to use,when new construction materials need to be lowered and lifted, limitation on the transmission wheel can be rapidly relieved by pulling the pulling handle, and when one motor breaks down, the sliding block corresponding to the corresponding motor moves towards the outer side of the sliding base to clamp the transmission wheel at the end of the damaged motor, and the other motor can be continuouslyused through the pulley block, so that normal use of the lifting equipment is ensured, the construction is not delayed, and then, the damaged motor is maintained after the construction is finished.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a protective fast lifting device for road construction bridges. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to cross mountains, poor geology, or meet other traffic needs to make traffic more convenient. Bridges are generally composed of superstructure, substructure, supports and auxiliary structures. The superstructure is also called bridge span structure, which is the main structure for crossing obstacles; the substructure includes abutments, piers and foundations. The lifting mechanism is often used to lift the materials to be used to the top of the bridge span structure to facilitate construction and use by people; [0003] However, the existin...

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Problems solved by technology

[0004] The present invention provides a protective fast lifting device for road construction bridges, which can effectively solve the problem that the existing lifting device proposed in the above background technology lacks a locking device, which leads to the danger of material falling when lifting construction materials situation, and the existing lifting devices are all working with a single motor. When the motor fails to lift the equipment, it will stop using as a whole, which leads to the problem of delaying the construction progress.

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