Well lid overturning opening and closing mechanism based on four-bar linkage hinge and hydraulic driving system thereof

Abstract

The invention discloses a well lid overturning opening and closing mechanism based on a four-bar linkage hinge and a hydraulic driving system thereof. The cylinder body end of a main hydraulic cylinder and a supporting seat are hinged into a wellbore; the cylinder rod end of the main hydraulic cylinder, a second connecting piece and an adjustable damping cylinder are hinged to the same shaft; thesecond connecting piece is hinged to the tail edge of a well lid; and the adjustable damping cylinder is hinged to the middle of the well lid through an overturning spindle. The cylinder body end of an auxiliary hydraulic cylinder and the supporting seat are hinged into the wellbore; the cylinder rod end of the auxiliary hydraulic cylinder is upward and is hinged to a pushing-up rod; the middle ofthe pushing-up rod is hinged into the wellbore; the pushing-up rod is hinged to the middle of the overturning rod which is hinged to the tail edge of the well lid; and the overturning rod is hinged to a first connecting piece which is hinged to a fixing shaft in the wellbore. Hydraulic driving is adopted, through movement mechanism linkage, the large-weight well lid is quickly opened and closed at any opening angle, the mechanism structure is tight, the occupied space is small, the effective utilization area of a wellbore channel is increased, the mechanism safety is improved, and the well lid overturning opening and closing mechanism is suitable for different weights and overturning angles.

Description

technical field [0001] The invention relates to a well cover turning opening and closing mechanism, in particular to a well cover turning opening and closing mechanism based on a four-link hinge and a hydraulic drive system thereof. Background technique [0002] The manhole cover is a sealing device leading to the entrance and exit of underground facilities. When the above-ground space cannot meet the conditions, many facilities need to be transferred to underground construction, such as underground transportation, power transmission, fuel pipelines, fire-fighting facilities, etc. In recent years, the country has stepped up efforts to build various infrastructures, and the utilization of underground space will play an important role. Therefore, for personnel and equipment, the entrance and exit to the underground - the manhole cover needs to have more complete design requirements. [0003] At present, the general manhole cover turning opening and closing mechanism is mostly...

AI Technical Summary

Problems solved by technology

[0003] At present, the general manhole cover turning opening and closing mechanism is mostly a simple support rod, the mechanism is relatively loose, the space utilization rate is not high, it cannot bear the heavy manhole cover, and there are often restrictions on the turning angle of the manhole cover

Images