Multi-degree-of-freedom joint filling machine executing mechanism

Abstract

A multi-degree-of-freedom actuating mechanism of a caulking machine comprises a frame, a rotary table, a rack, a movable arm bucket rod branch chain, a retaining chain, a movable platform and a discharging nozzle, the rotary table is mounted on the frame through a first revolute pair, the rack is fixedly mounted on the rotary table, and the rack rotates relative to the frame along with the rotary table under the driving of a motor; the movable arm bucket rod branch chain comprises a movable arm, a bucket rod, a first linear driver and a second linear driver; the first linear driver and the second linear driver are electric-hydraulic push rods; the movable platform is mounted on the bucket rod through an eighth driving pair; and the discharging nozzle is mounted on the movable platform. The retaining chain comprises a first connecting rod, a second connecting rod, a first bent rod and a second bent rod. According to the moving table, under the rotary motion of the rotary table and the telescopic motion of the first linear driver and the second linear driver, the discharging spray head on the moving table achieves three-degree-of-freedom translational motion through the constraint of the maintaining chain, and then the action requirement of asphalt joint filling is met.

Description

technical field [0001] The invention relates to the field of asphalt pavement maintenance equipment, in particular to an actuator of a multi-degree-of-freedom caulking machine. Background technique [0002] Asphalt pavement caulking machine is a special equipment mainly used for the treatment of cracks and joints of asphalt pavement such as expressways, national and provincial arterial roads, county and township roads, squares and other diseases. Through the liquefied gas heating system, the circulating heat transfer oil is used to quickly melt the asphalt or joint filling agent, and the melted asphalt or joint filling agent is sprayed out through the discharge nozzle through the asphalt pump to achieve the effect of crack treatment. In order to ensure the smooth discharge of the discharge pipe and the discharge nozzle, a constant temperature control system is often used in the discharge pipe and nozzle. [0003] Although the existing caulking machines are very effective in...

AI Technical Summary

Problems solved by technology

[0003] Although the existing caulking machines are very effective in the treatment of asphalt pavement cracks, most of the existing caulking machines are hand-push, and the operator needs to hold the discharge pipe to perform the caulking operation. Large, due to the high temperature of the discharge pipe, workers may be burned

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