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Deep-foundation grab crane

A crane and deep foundation technology, applied in cranes and other directions, can solve the problems of low efficiency, limited excavation depth, slow excavation speed, etc., and achieve the effects of convenient operation, low cost and large bucket capacity.

Active Publication Date: 2013-08-07
BEIJING CSR TIMES LOCOMOTIVE & ROLLING STOCK MECHANICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In my country's deep foundation earthworks, excavators, hanging boxes and hydraulic grabs are often used to excavate and retrieve soil. However, these equipment have disadvantages such as low efficiency, slow excavation speed, and limited excavation depth.

Method used

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  • Deep-foundation grab crane

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Embodiment Construction

[0017] The invention discloses a deep foundation grab crane, which is professional equipment designed for grabbing and fetching soil during deep foundation construction. It is not limited by the construction depth and has the characteristics of high excavation efficiency.

[0018] For ease of understanding, the technical terms involved in the scheme of the present invention are now explained as follows:

[0019] Deep foundation: The deep foundation has a large buried depth, and the lower solid soil layer or rock layer is used as the foundation of the bearing layer. Diffusion and distribution of the borne load to the shallow layer of the foundation through the bottom surface of the foundation. Therefore, when the shallow soil quality of the construction site cannot meet the requirements of the building for the bearing capacity and deformation of the foundation, and it is not suitable to adopt foundation treatment measures, it is necessary to consider adopting a deep foundation ...

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Abstract

The invention discloses a deep-foundation grab crane. An entire truck adopts crawler hydraulic crane remounting design; the ground pressure is small; the stability is high; main winching and auxiliary winching are controlled by parallel-variable double-pump total power; main and auxiliary winching motors are controlled respectively, so that double winching synchronization is achieved; a grab bucket is lifted by the main winching; the auxiliary winching provides a bucket closing tension force; single-rope tension forces of the main winching and the auxiliary winching can reach 10T, so that the main winching and the auxiliary winching have the super high lifting capacity; a closing bucket adopts 4-multiplying-power pulley block design, thus a bucket closing force can reach 40T, so that the main winching and the auxiliary winching have the super high grabbing capacity; the grab bucket adopts a sliding block pulley block stabilizing device; and the deep-foundation grab crane is simple, practical and good in stability.

Description

technical field [0001] The invention relates to the technical field of deep foundation earthwork, in particular to a deep foundation grab crane. Background technique [0002] In the process of deep foundation construction, depth is the biggest problem faced. When the depth reaches 20 meters, ordinary excavators, such as long-arm excavators, are limited in digging and fetching soil. The grab bucket of mechanical cranes of the same level has a small bucket capacity and a limited depth of lowering due to its large structural size and limited driving force. , special equipment must be used for digging and fetching soil. [0003] In my country's deep foundation earthworks, excavators, hanging boxes and hydraulic grabs are often used to excavate and retrieve soil. However, these equipment have disadvantages such as low efficiency, slow excavation speed, and limited excavation depth. [0004] Therefore, in view of the above situation, how to design professional equipment for grab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/36
Inventor 牟宗月孙德胜
Owner BEIJING CSR TIMES LOCOMOTIVE & ROLLING STOCK MECHANICS
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