Transverse moving hoisting walking track device of bridge erecting machine

Abstract

The invention discloses a transverse moving hoisting walking track device of a bridge erecting machine. The machine comprises a connecting beam and a hoisting arm, wherein the hoisting arm is coaxially connected with the connecting beam, an electric walking hoist is arranged on the lower side of the hoisting arm, the connecting beam is connected with the bridge erecting machine through an installing device, the installing device comprises a guide rail, a first connecting body and a second connecting body, the connecting beam is clamped by the second connecting body, the guide rail is fixed onthe lower side of the connecting beam, the first connecting body is rotationally connected with the second connecting body to achieve the angle adjustment of the bridge erecting machine, and the second connecting body slides along the guide rail so as to achieve the span adjustment of the bridge erecting machine. According to the transverse moving hoisting walking track device of the bridge erecting machine, the working efficiency of the bridge erecting machine carrying out the transverse moving hoisting of a walking track beam of a front supporting leg can be accelerated, so that the problemof overall transverse moving hoisting of a wide skew bridge beam walking track can be solved in a self-propelled and timely mode.

Description

technical field [0001] The invention relates to the technical field of installation of prefabricated components of a bridge erecting machine in bridge engineering, in particular to a traveling track device for lateral movement, hoisting, and installation of a bridge erecting machine. Background technique [0002] In the process of erecting prestressed prefabricated components (box girders, T beams, U-shaped beams, etc.) Shifting is cumbersome and time-consuming. Especially for wide or wide oblique bridges that span rivers and hills, external hoisting machinery is required to assist the bridge, or a walking track that fixes the cantilever beam on the bridge erecting machine and then uses the inverted chain hoist to hoist the front legs in sections The beams are then connected into a whole (when the track beams are too long, the disturbance is serious and cannot be hoisted as a whole). [0003] First, when the track beam of the front outrigger moves laterally, the rear count...

AI Technical Summary

Problems solved by technology

[0003] First, when the track beam of the front outrigger moves laterally, the rear counterweight of the bridge erecting machine (the counterweight is generally a prefabricated component) is required, and the middle outrigger touches the ground to support the front end so that the front outrigger is out of the cantilevered lever state of the track beam. The bridge crane is in the most unfavorable state of overturning through the hole, which has a greater safety risk

Secondly, the external hoisting machinery needs to deal with the pre-embedded steel bars on the top surface of the prefabricated components before the auxiliary hoisting on the bridge, and the temporary reinforcement of the lateral connections of the prefabricated components increases the workload, and the vibration during the operation has a great impact on the stability and stability of the box girder just erected. The installation accuracy of the support or temporary support has a certain impact. For the overall length of the track beam, it is more dangerous to lift the track beam with two machines, and it is time-consuming and uneconomical to lift the track beam by multiple traverses in many sections.

Fixing the cantilever beam on the bridge erecting machine and then using the inverted chain hoist to hoist the walking track beam in sections is time-consuming and laborious, and the progress is slow and seriously hinders the speed of bridge erection. It takes too long for the front outrigger of the bridge erecting machine to detach from the track beam, which increases the risk of overturning. Multi-person cooperation is required to increase the construction risk of operators working at heights and high temperatures

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