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Self-adaptive manhole cover opening positioning and marking prompting device and method

An adaptive and manhole cover technology, applied in road signs, water conservancy projects, artificial islands, etc., can solve the problems of inaccurate positioning of sewer manhole covers, inaccurate and inaccurate positioning and marking prompts, and achieve accurate positioning and marking prompts. Safety, Precise Effect of Safety Tips

Active Publication Date: 2020-07-10
宋彦震
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] When urban roads are flooded and the water flow velocity on the road surface is constant, the shallower the depth of the accumulated water, the greater the offset of the airbag relative to the axis of the sewer manhole cover, and the less accurate the positioning of the airbag to the sewer manhole cover
[0015] Therefore, if the manhole cover is washed away by water, the device simply pops up an airbag automatically to position and mark the position of the manhole cover.

Method used

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  • Self-adaptive manhole cover opening positioning and marking prompting device and method
  • Self-adaptive manhole cover opening positioning and marking prompting device and method
  • Self-adaptive manhole cover opening positioning and marking prompting device and method

Examples

Experimental program
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Effect test

no. 1 example

[0044] When there is water on the road surface, the direction of water flow on the road surface is determined, and the water flow flows from a relatively high-lying position to a relatively low-lying position.

[0045] In the invention, the air bag is placed directly above the center of the manhole cover of the sewer by automatically adjusting the length of the traction rope.

[0046] The control method is as follows.

[0047] Such as figure 1 , since the radius R of the manhole cover is known and determined, in the case of different water depth H and water velocity V, the device first releases a long enough traction rope through the stepper motor, and then pulls back the traction through the stepper motor rope, in the process of the stepping motor pulling back the traction rope, the length L of the traction rope gradually decreases, and at the same time the angle B between the traction rope relative to the horizontal plane gradually increases, when the condition is met: L*co...

no. 2 example

[0049] Such as figure 1 , the main control unit first controls the stepper motor to reversely release a long enough traction rope through the drive unit, and then the main control unit controls the stepper motor to rotate forward and pull the traction rope through the drive unit.

[0050] During the process of the stepping motor releasing the traction rope, when the pressure detected by the main control unit through the pressure sensor on the side of the second roller is greater than the preset pressure value, it means that the traction rope is in a tight state. At this time, the main control unit Continue to control the stepper motor through the drive unit to reverse and release the traction rope outward; when the pressure detected by the main control unit through the pressure sensor on the side of the second roller is not greater than the preset pressure value, it means that the traction rope is in a loose state. It is suitable for releasing the traction rope, because the re...

no. 3 example

[0055] Such as figure 2 , assuming that the location of point S is relatively higher than that of point L, and the water flow on the road surface flows from point S to point L, that is figure 2 The direction of water flow is from left to right.

[0056] First, install the device at point S of the manhole cover. When there is water on the road and the sewer manhole cover is washed away by water, the airbag is pulled by the traction rope at point S and floats above the sewer manhole cover. At this time, the traction rope is Tensioned and taut.

[0057] Since the radius R of the manhole cover is known and determined, when the water depth is H1, the device first releases a long enough traction rope through the stepper motor, and then pulls back the traction rope through the stepper motor, and then pulls back the traction rope through the stepper motor. During the process of pulling the rope, the length L1 of the pulling rope gradually decreases, and at the same time, the angle...

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Abstract

The invention discloses a self-adaptive manhole cover opening positioning, marking and prompting device. The device comprises a stepping motor, a rotating disc, a traction rope, a first roller, a second roller, a pressure sensor, a third roller, a fourth roller, a hollow fan-shaped shell, a sliding block, an air bag, a main control unit, a driving unit, a stepping motor, an angle sensor and an encoder. As the radius R of a manhole cover opening is known and determined, under the condition of different accumulated water depths H and water speeds V, the device discharges the traction rope whichis long enough through the stepping motor firstly, then the traction rope is pulled back through the stepping motor, in the process that the traction rope is pulled back through the stepping motor, the length L of the traction rope is gradually decreased, meanwhile, the included angle B between the traction rope and the horizontal plane is gradually increased, and when the condition that L * cos(B) = R is met, the stepping motor stops pulling back the traction rope; and the air bag is located at the position right over the center of the manhole cover opening of a sewer at the moment, and the air bag is placed at the position right over the center of the manhole cover opening of the sewer by automatically adjusting the length of the traction rope, so that the positioning, marking and prompting of the manhole cover opening of the sewer are more accurate. Therefore, more accurate safety prompts are given to pedestrians and vehicles passing by, and the safety of the pedestrians and the vehicles is guaranteed. The invention further provides a self-adaptive manhole cover opening positioning, marking and prompting method.

Description

technical field [0001] The invention relates to the technical field of manhole cover safety protection, in particular to an adaptive manhole cover opening positioning and marking prompt device and a method thereof. Background technique [0002] During the rainstorm season, due to the lack of drainage capacity of the urban drainage system and certain terrain differences between different parts of the city, when the rainstorm fills the sewers, the sewer manhole covers in low-lying areas will collapse due to excessive water pressure. When a blowout occurs, the manhole cover of the sewer is lifted up and opened. When it is opened, the water flow on the ground will wash the manhole cover away from its original position. [0003] Sometimes in order to alleviate the obstacles caused by the accumulated water on the road surface to traffic, maintenance personnel will open the sewer manhole cover so that the accumulated water on the road surface can quickly flow into the sewer. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/14E01F9/40
CPCE02D29/14E02D29/1481E01F9/40Y02A30/60
Inventor 宋彦震梁雪连
Owner 宋彦震