Cover lifting device for road surveying and mapping construction

Abstract

The invention relates to the technical field of lifting devices, in particular to a cover lifting device for highway surveying and mapping construction. A cover lifting device for road surveying and mapping construction is used for lifting a well cover and comprises a positioning mechanism, a driving mechanism, a connecting mechanism, a position adjusting mechanism and a flexible rope. The positioning mechanism comprises a bottom ring, a first one-way piece, a first spring and a positioning ring. The driving mechanism comprises a magnetic ring, a driving cylinder and a connecting cylinder. The connecting mechanism is used for promoting the connecting cylinder to synchronously rotate along with the driving cylinder after the connecting cylinder is separated from the magnetic ring. The position adjusting mechanism is used for enabling the connecting cylinder and the well lid to be coaxial when the driving cylinder rotates. According to the cover lifting device for road surveying and mapping construction, by arranging the position adjusting mechanism, the axis of the whole driving mechanism can be made to be coaxial with the well lid before the well lid is opened, so that the well lid cannot incline when being opened, the well lid and the edge of the well lid are prevented from being abraded, and personal injuries caused in the well lid opening process can be avoided.

Description

technical field [0001] The invention relates to the technical field of lifting devices, in particular to a lifting device for highway surveying and mapping construction. Background technique [0002] In the work of highway construction, it is necessary to carry out some underground surveying and mapping work. When carrying out the flat-panel mapping method or the measurement method, it is usually necessary to open the manhole cover first. Hold the keyhole on the manhole cover and open the manhole cover. This method of opening the manhole cover is labor-intensive for workers, and it is easy to damage the muscles. Some manhole covers have been soaked and rusted by rain for many years, and it is difficult for workers to open the manhole cover at one time. . And workers rarely consider the direction of force when lifting the cover when opening the cover. If the direction of force when opening the cover is not perpendicular to the surface of the cover, it will not only make the ...

AI Technical Summary

Problems solved by technology

[0004] After observation, the inventor found that many well covers are provided with keyholes for easy opening of the well covers. There is one keyhole on the hinged well covers, and most of the well covers without hinged structures have two keyholes, and the well covers without hinged structures are often It is difficult to open, so the present invention provides a lifting device for highway surveying and mapping construction to solve the problem that the existing integrated platform for highway surveying and mapping construction is easy to damage the well cover when opening the well cover without hinged structure

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