A steel truss girder bridge beam transport flat car

Abstract

The invention discloses a steel truss girder bridge transport flat car, which comprises a car body, and bases are fixedly connected to the left and right sides of the top surface of the car body. The invention relates to the technical field of bridge engineering. The steel truss girder bridge beam transport flat car locks the structural joints and the vehicle body through the adjustment mechanism and the fastening mechanism, which greatly improves the stability of the structural joints and the vehicle body, and avoids the shaking impact of the structural joints due to external factors. The vehicle affects the driving center of gravity of the vehicle, which effectively improves the safety during transportation, and greatly reduces the possibility and degree of shaking of the structural joints on the vehicle body, effectively avoiding the multi-directional pulling force and vibration of the structural joints when they shake. The self-shearing force produces hidden damage, which greatly improves the service life and safety of the bridge. At the same time, the adjustment mechanism can form a frame structure between the cab and the structural members, which can act on the forward-moving structural members during emergency braking. To block the buffer effect, effectively improve the safety of drivers.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a steel truss bridge girder transport flat car. Background technique [0002] The steel truss girder bridge is a structural form in which the solid-web steel plate girder bridge is hollowed according to certain rules. The structure as a whole is a beam-bearing mode, that is, a structure that mainly bears bending moment and shear force. , bearings and bridge piers (abutments), because high-altitude construction is dangerous and difficult to construct, so in the process of bridge construction, most of the bridges will not be assembled at high altitude along the bridge body. Usually, after the construction personnel assemble a certain section of the bridge on the ground, the section is transported to the construction site by a beam-carrying flat car and lifted to a high altitude for segmental assembly. Most of the beam transport flat cars are bound with steel cables or r...

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a steel truss bridge beam transport flat car, which solves the problem that most of the existing beam transport flat cars use steel cables or ropes for binding after carrying structural parts, and steel cables and The rope has a certain degree of ductility, so it is easy to cause the structural parts to shake due to the complex road conditions at the construction site during transportation, and its huge weight can easily affect the driving center of gravity of the vehicle, causing a great safety hazard; at the same time, due to the binding effect When the structural joints are shaken due to poor performance, different parts of the structural joints are susceptible to pulling forces in different directions and their own shearing forces, which are likely to cause hidden damage to the structural joints themselves, which not only reduces the service life of the bridge, but also has a large Dangerous; and there is no good protective measures between the cab and the structural joints. If the vehicle brakes suddenly due to an emergency during transportation, the structural joints are easy to move forward on the vehicle body, posing a life-threatening problem to the driver.

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