Multi-layer retractable multi-point displacement gauge anchor head for water-rich and weak formation

Abstract

The invention relates to a multi-layer telescopic multi-point displacement meter anchor head for water-rich soft stratum. A plurality of in-hole measuring point anchor head units are arranged in the longitudinal direction one after another. Each in-hole measuring point anchor head unit is designed to be a surface contact type and comprises a main anchor head and an anchor head protective cover, wherein each main anchor head is connected with the corresponding anchor head protective cover by a positioning hole. Each main anchor head comprises an indium steel wire, a fixed pulley device, an external force conversion device and an anchor claw execution mechanism; each indium steel wire and each fixed pulley device receive external force; a contraction action is realized by each anchor claw execution mechanism through the conversion and the drive of each external force conversion device; each external force conversion device comprises a tension spring device and a plurality of special springs; each anchor claw execution mechanism comprises a plurality of triangular blade-type anchor claws; and the number of the special springs is the same as that of the anchor claws. The multi-layer telescopic multi-point displacement meter anchor head has the advantages of good anchoring effect, wide measuring range, simple structure, convenience in construction, high anti-sliding capacity, reliable performance and the like.

Description

technical field [0001] The invention relates to a multi-point displacement gauge anchor head, and more particularly relates to a multi-layer telescopic multi-point displacement gauge anchor head used in water-rich and weak formations. Background technique [0002] In the construction of water-rich and weak ground, the anchoring effect and reliability of the anchor head of the soil displacement meter are related to the safety of the project. At present, most of the anchor heads of soil displacement meters in water-rich and weak strata adopt open-type umbrella-shaped anchor heads, compressed wood anchors, claw-hook anchor heads, grouting or anchoring agent bonding, etc. These anchoring methods have great influence on construction projects Construction has played an important role, but with the development of construction technology, there are many deficiencies in the construction process. The open-type umbrella-shaped soil anchor anchor head, when the umbrella-shaped soil anc...

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