Opening device for road well lids

Abstract

The invention relates to an opening device for road well lids. The opening device comprises a hydraulic power device, a lifting device, a suspending device and a moving device. The hydraulic power device is composed of a pedal type hydraulic pump, a double-acting hydraulic cylinder, a hydraulic oil pipe and a pressure-relieving rotary knob. The basic structure of the lifting device is a four-connection-rod mechanism, the four-connection-rod mechanism comprises lifting arm upper connection rods and lifting arm lower connection rods, and the lifting arm upper connection rods and the lifting arm lower connection rods in symmetry with the lifting arm upper connection rods are meshed and connected through lifting arm upper connection rod meshing gears and lifting arm lower connection rod meshing gears and are hinged. The suspending device is composed of hook sliding grooves, hooks, fine adjustment nuts and deflection-preventing supports, wherein the fine adjustment nuts are connected to the hooks through screw pairs and connected to the hook sliding grooves through moving pairs and adjust the distance between the two hooks. The moving device is a universal wheel mechanism, and four thrust universal wheels are installed on the four corners of a machine frame bottom plate respectively.

Description

technical field [0001] The invention relates to a well cover opening tool, in particular to a road surface well cover opening device. Background technique [0002] With the overall development of my country's economy, the construction and development of urban infrastructure is unprecedented, especially underground public and factory facilities such as water conservancy, communication, electricity, gas, heat, fire protection, sanitation, etc. need to install and repair various types of manhole covers. The workload of the opening operation of manhole covers is very large, especially when it involves the maintenance of important pipelines such as national defense or the occurrence of emergencies, the manhole covers need to be opened quickly. However, due to the limitations of current technical means, the opening operation cannot be carried out in time, seriously Affect the construction progress and leave some safety hazards. [0003] At present, there are three kinds of traditio...

AI Technical Summary

Problems solved by technology

[0002] With the overall development of my country's economy, the construction and development of urban infrastructure is unprecedented, especially underground public and factory facilities such as water conservancy, communication, electricity, gas, heat, fire protection, sanitation, etc. need to install and repair various types of manhole covers. The workload of the opening operation of manhole covers is very large, especially when it involves the maintenance of important pipelines such as national defense or the occurrence of emergencies, the manhole covers need to be opened quickly. However, due to the limitations of current technical means, the opening operation cannot be carried out in time, seriously Affect the construction progress and leave some safety hazards

[0003] At present, there are three kinds of traditional manhole cover opening tools in our country: iron hook, foreign pick and sledgehammer, commonly known as "three major pieces". These three tools correspond to and represent three opening methods: one is to use iron hook to lift the manhole cover; Lift the manhole cover with a foreign pick; if the first two methods do not work, directly use a sledgehammer to break the manhole cover and carry out destructive demolition (the manhole cover will not be able to continue to be used after the demolition, resulting in a waste of resources)

The traditional opening method is not only time-consuming and laborious, but also cannot be opened for some difficult-to-open manhole covers (the reasons for which are difficult to open will be explained in detail later), and such unopenable manhole covers will seriously affect the construction progress. For the problem of manhole cover, the project team designed and developed this semi-automatic manhole cover opener

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