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Transfer bridge for deep and large foundation pit earth-rock transfer and earth-rock excavation and transfer method

A technology for earthwork and foundation pits, applied in bridges, open bridges, bridge forms, etc., can solve the problems of high cost of truss cranes, troublesome and time-consuming installation, and not suitable for large-scale promotion.

Active Publication Date: 2020-06-09
CHINA METALLURGICAL CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The girder crane used in this earthwork excavation method can effectively improve the efficiency, but the girder crane is expensive and the installation is troublesome and time-consuming, so it is not suitable for large-scale promotion.

Method used

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  • Transfer bridge for deep and large foundation pit earth-rock transfer and earth-rock excavation and transfer method

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Embodiment

[0019] Such as figure 1 As shown, the transfer bridge provided in this embodiment for the transfer of earth and stone in deep and large foundation pits is installed on the earth and stone outside the foundation pit 1, and includes a door frame 2, a ground beam 3, a suspension trestle 4 and a trestle lifting mechanism, and the door frame 2 is vertically arranged, the ground beam 3 and the suspension trestle 4 are respectively arranged on the front and rear sides of the door frame 2, and the trestle lifting mechanism includes two winches 6 and two steel cables 5, one end of the steel cables 5 is fixed and Wrapped on the reel of the hoist 6, the other end is fixed on the front end of the suspension trestle 4 after going around the top of the door frame 2; Installed on the door frame 2, the steel cable 5 is lowered through the hoist 6 (other power devices can be used in the specific implementation), and the suspension trestle 4 can be lowered to form an earth and stone transfer ch...

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Abstract

The invention discloses a transfer bridge for deep and large foundation pit earth-rock transfer and an earth-rock excavation and transfer method. The transfer bridge is installed on an earth-rock outside a foundation pit, and comprises a door frame, a ground beam, a suspension trestle and a trestle lifting mechanism, the door frame is vertically arranged, the ground beam and the suspension trestleare arranged on the front side and the rear side of the door frame respectively, and the trestle lifting mechanism comprises at least one steel cable fixedly connected to the suspension trestle. Theground beam is fixed at the lower end of the door frame and is horizontally arranged, the suspension trestle is rotatably arranged on the door frame, an earth-rock transfer channel can be formed afterthe suspension trestle is put down by lowering the steel cable, and one end, connected to the steel cable, of the suspension trestle can be integrally lifted by pulling up the steel cable. Accordingto the transfer bridge for deep and large foundation pit earth-rock transfer and the earth-rock excavation and transfer method provided by the invention can achieve repeated circulation, facilitate earth-rock transportation, and can improve the earth-rock excavation progress.

Description

technical field [0001] The invention relates to a foundation pit excavation process, in particular to a transfer bridge for transferring earth and stone in deep and large foundation pits and an earth and stone excavation and transportation method. Background technique [0002] Existing deep and large foundation pit constructions all start layered excavation from the top of the foundation pit, and protect while excavating, and the first-level protection of excavation is formed into the first-level. During construction, in order to facilitate the transportation of earth and stone, every excavation of a foundation pit requires a slope on one side of the foundation pit as a channel for transporting earth and stone trucks. The deeper the foundation pit, the longer the slope. It will occupy the construction face of the foundation pit; in addition, the earthwork on the slope must be removed and transported out of the foundation pit at last before it can be used as an enclosure stru...

Claims

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Application Information

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IPC IPC(8): E01D15/08
CPCE01D15/08
Inventor 何俨杨洋
Owner CHINA METALLURGICAL CONSTR ENG GRP
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