Expressway roadbed large-grained stone tamping test device

Abstract

The invention discloses an expressway roadbed large-grained stone tamping test device which comprises an experiment frame, a supporting frame is fixedly connected to the experiment frame, two sliding blocks are slidably connected to the supporting frame, two rotating shafts are rotatably connected to the two sliding blocks, a box is fixedly connected between the two rotating shafts, the two ends of the box are open, and a balancing weight is slidably connected into the box. Placing grooves are formed in the two ends of the inner wall of the box body, fixing assemblies are arranged in the two placing grooves, shells are fixedly connected to the two ends of the box body, sliding plates are slidably connected into the two shells, a square pipe is fixedly connected to one side of a sliding block, a connecting rod is slidably connected into the square pipe, and one end of the connecting rod is rotationally connected with an extrusion plate. According to the device, by arranging the rotating extrusion plate, the device can tamp an arched cambered surface, during tamping, the box body is kept in a vertical state, the impact effect of the balancing weight on the sliding plate is not affected, the tamping effect on a roadbed material in an experiment frame is best, and the efficiency is improved.

Description

technical field [0001] The invention belongs to the field of roadbed compaction experiments, in particular to a large-grain stone compaction test device for expressway roadbeds. Background technique [0002] Special compaction techniques in highway engineering include dynamic compaction, impact rolling, hydraulic compaction, and other compaction techniques. Special compaction cannot be evaluated as a separate sub-project. This type of compaction process is designed to improve the quality of compaction. It is a short-term An effective construction method to increase the bearing capacity of the foundation. [0003] When tamping the subgrade, sometimes arched roads such as bridge decks or slopes are encountered. During impact tamping, most of the existing machines cannot directly tamp the arched roads, and adjustments are required, including adjusting postures and moving equipment. Inconvenient and affect efficiency. Contents of the invention [0004] The object of the pres...

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Problems solved by technology

[0003] When tamping the subgrade, sometimes arched roads such as bridge decks or slopes are encountered. During impact tamping, most of the existing machines cannot directly tamp the arched roads, and adjustments are required, including adjusting postures and moving equipment. Inconvenience affects efficiency

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