CN114592547B

CN114592547B - Thin anti-falling manhole cover inner plate and mounting method thereof

Info

Publication number: CN114592547B
Application number: CN202210357933.0A
Authority: CN
Inventors: 冯世光; 林善贤; 杨智磊; 王森; 何子权
Original assignee: Nantong University
Current assignee: Nantong University
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-11-04
Anticipated expiration: 2042-04-06
Also published as: CN114592547A

Abstract

The invention relates to a thin anti-falling manhole cover inner plate which is used for being installed on the lower side of a manhole cover and comprises a manhole cover inner plate body, wherein the manhole cover inner plate body is formed by spirally winding steel plates, and the manhole cover inner plate body is in a plane or semi-cone shape; the inner end of the steel plate which is spirally arranged is a circular or polygonal foot-falling pedal which is horizontally arranged in the middle of the inner plate body of the well cover; a reinforced antirust layer is wrapped outside the steel plate; the reinforced antirust layer material is one of plastic, paint or a passivation layer; the thin anti-falling manhole cover inner plate is simple in structure, low in cost, multifunctional, small in thickness and convenient to install, can be used for safely transforming the well mouth of the existing inspection well, and has a good application prospect.

Description

Thin anti-falling manhole cover inner plate and mounting method thereof

Technical Field

The invention belongs to the technical field of municipal and public supplies, and particularly relates to a thin anti-falling manhole cover inner plate and an installation method thereof.

Background

In modern cities, a large number of underground pipe networks need to be buried to meet the requirements of flood control, water supply and drainage, power supply, heat supply, gas supply, communication and the like, inspection wells need to be arranged at certain intervals or on important nodes in order to meet the maintenance requirements of the underground pipe networks and facilities therein, and well covers need to be prepared on the inspection wells for daily safety; the existing well lids are mostly made of cast iron and have certain economic value, so that the well lids are stolen, the well lids in recent years are mostly made of steel fiber concrete, reinforced plastics and the like with low economic value, the stealing phenomenon is reduced, but the strength, the service life and the like of the well lids are not as good as those of the cast iron well lids, the well lids are still lost due to the phenomena of flushing of the well lids by water in an underground pipe network, well lid damage, artificial damage and the like, and once pedestrians fall into the well without attention, serious injury is likely to be caused.

In order to prevent the pedestrian from falling, except setting up the auxiliary measure such as enclosing fender, warning sign, it is the most effective method that this is most important still to set up the anti-falling device at the well head, and it is the plastic slab etc. that sets up protection string net, have the elastic webbing at the well head that adopt more at present to solve the scheme, for example: the patent number is 2020230466656, and in the utility model patent of the name "a give drainage well lid protection network device", a well lid protection network device is disclosed, including road bed, well lid, lock dead and protection network, the recess has been seted up to the top of road bed, and the place ahead of recess is provided with the well lid, the wash port has all been seted up to the left and right sides of well lid, and the rear of well lid is connected with the turning block, the inside of turning block is provided with the pivot, and has seted up the trapezoidal wall of a well in the middle part of the road bed, be provided with solid wire loop all around the trapezoidal wall of a well, and the internal connection of the trapezoidal wall of a well has the protection network, be connected with the connecting rod all around of solid wire loop, and the connecting rod front side is connected with the bracing piece, the inside groove has been seted up in the bracing piece outside, and the connecting rod outside is provided with compression spring. This give drainage well lid protection network device drainage well lid has add the protection network, can accept the pedestrian when personage drops, has set up the structure of locking and can not the in use perk, leads to causing the unnecessary injury to pedestrian and vehicle, has solved the problem of drainage well lid security.

Patent number is 2019212804967, and in the utility model patent of the name be "a give drainage well lid protection network device", disclose a give drainage well lid protection network device, including giving drainage well wall of a well and sewer well lid, the top of giving drainage well wall of a well is equipped with the sewer well lid, be equipped with in giving drainage well wall of a well and give drainage well lid protector, give drainage well lid protector and include fixed block, telescoping device, connecting rod and stripper plate, all be equipped with the telescoping device around the fixed block, the end connection connecting rod of telescoping device, the tip fixed connection stripper plate of connecting rod, the inboard of stripper plate is equipped with protection network fixing device, the utility model discloses a setting of telescoping device can drive the stripper plate and stretch out to make the stripper plate closely laminate between the drainage well wall of a well with different diameters, and through protection network fixing device's setting, can increase and reduce the diameter of protection network, use with giving drainage well lid protector cooperation, make the protective effect better.

The anti-falling structure provided with the protective net or the protective net with the elastic band has a good protective effect, but the protective structure has the defects of short service life, troublesome installation or corresponding matched equipment, relatively high cost and incapability of preventing the diffusion of peculiar smell, and can still cause damage due to insufficient buffering when falling.

Disclosure of Invention

The invention aims to provide a thin anti-falling manhole cover inner plate which is convenient to install, has better anti-theft, anti-washout and anti-peculiar smell diffusion effects, has a good anti-falling buffering effect and a monitoring function, and an installation method thereof.

In order to solve the technical problem, the invention discloses a thin anti-falling manhole cover inner plate which is used for being installed on the lower side of a manhole cover and comprises a manhole cover inner plate body, wherein the manhole cover inner plate body is formed by spirally winding steel plates, and the manhole cover inner plate body is in a plane or semi-cone shape; the inner end of the steel plate which is spirally arranged is a round or polygonal foot-falling pedal which is horizontally arranged in the middle of the inner plate body of the well lid; a reinforced antirust layer is wrapped outside the steel plate; the reinforced antirust layer material is one of plastic, paint or a passivation layer.

Furthermore, the outer end of the steel plate which is spirally arranged is a reinforced part which is thickened or widened.

Further, no gap or a gap of not more than 2cm exists between the adjacent steel plates of the spirally arranged steel plates.

The reinforcing part is provided with a plurality of first mounting holes;

further, still including being used for fixing the angle bar on the well head inner wall with well lid inner panel body, be equipped with the second mounting hole on one side of the angle bar, the second mounting hole is for having internal screw thread blind hole or through-hole.

Furthermore, flexible sealing strips are arranged between the steel plates; or

The foot pedal is in a semi-cone shape, the section of the steel plate is in a parallelogram shape, and the side edge inclination angle of the parallelogram is matched with the side surface inclination angle of the semi-cone shape.

Furthermore, a monitoring device with a signal transmitting function is arranged on the foot pedal.

Further, monitoring devices is pressure-sensitive device, and the installation is accomplished the back, and monitoring devices upper portion offsets with the well lid bottom, and there is weak pressure between monitoring devices and well lid, and monitoring devices does not outwards launch the signal, and when the lid was opened, washed away or lost, monitoring devices received pressure return to zero, and monitoring devices launches well lid disappearance signal to the external world, and when people or thing fell into well lid inner panel body, monitoring devices received pressure grow, and monitoring devices launches the signal of falling to the external world.

Furthermore, the device also comprises a propping device for installing or dismantling the inner plate body of the well cover; the strutting arrangement is a Z-shaped or U-shaped supporting plate, the bottom of the supporting plate is lengthened, a first bending part used for accommodating the reinforcing part is arranged at the end head of the upper part of the supporting plate, and a sinking part or a second bending part is arranged at the end head of the lower part of the supporting plate.

When the installation method is used, one side of the angle iron, which is provided with the second installation hole, is arranged on the upper part and is horizontally arranged, and the other side of the angle iron is arranged on the lower part and is fixed with the inner wall of a well mouth; the reinforcing part is fixed with the angle iron through a bolt.

Furthermore, the bolt penetrates through the first mounting hole and the second mounting hole from bottom to top and is fixedly mounted.

The thin anti-falling well lid inner plate can be arranged at a well mouth, and the thin anti-falling well lid inner plate is fixed with the well mouth through the installation of the bolts from the lower side, so that a certain anti-theft effect is achieved; the inner plate body of the well lid is formed by coiling steel plates which are spirally arranged, so that the inner plate body has smaller volume and good falling buffering effect; the thin anti-falling manhole cover inner plate has a certain sealing effect, can prevent peculiar smell from diffusing, and can also reduce the impact force of water when the water in the inspection well rushes, thereby reducing the probability that the manhole cover is washed away; the monitoring device can be used for monitoring the opening of the well lid and whether a person falls; compared with a common anti-falling net or a baffle with supporting property, the thin anti-falling well cover inner plate does not need to be heavy and troublesome to disassemble like the baffle, does not have insufficient buffering property or short service life like the anti-falling net, even does not need to remove the well cover inner plate when performing simple maintenance or overhaul on facilities in an inspection well, and an overhaul worker directly falls on a foot-falling pedal and slowly falls (can add a counterweight to increase the falling depth when necessary), and can observe or overhaul through a gap enlarged between steel plates; the thin anti-falling manhole cover inner plate is simple in structure, low in cost, multifunctional, small in thickness and convenient to install, can be used for safely transforming the well mouth of the existing inspection well, and has a good application prospect.

Drawings

Fig. 1 is a schematic structural diagram of a thin anti-falling manhole cover inner plate.

Fig. 2 is a schematic structural diagram of a Z-shaped distraction device.

Fig. 3 is a schematic structural view of a U-shaped distraction device.

Fig. 4 is a schematic cross-sectional structure view of another thin anti-falling manhole cover inner plate.

The reference numbers in the figures are: 1-a well lid inner plate body, 2-a steel plate, 3-a foot pedal, 4-a reinforcing part, 5-a first mounting hole, 6-a second mounting hole, 7-a monitoring device, 8-a spreading device, 9-a first bending part and 10-a second bending part.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1, the thin anti-falling manhole cover inner plate is used for being installed on the lower side of a manhole cover and comprises a manhole cover inner plate body 1, wherein the manhole cover inner plate body is formed by winding steel plates 2 which are spirally arranged, and the manhole cover inner plate body is in a plane or semi-cone shape; the inner end of the steel plate which is spirally arranged is a round or polygonal foot-falling pedal 3 which is horizontally arranged in the middle of the inner plate body of the well lid; a reinforced antirust layer is wrapped outside the steel plate; the reinforced antirust layer material is one of plastic, paint or a passivation layer. Generally, the diameter of the foot pedal is not smaller than 20cm, so as to provide sufficient foot for the user.

The outer end of the steel plate which is spirally arranged is a reinforced part 4 which is thickened or widened. When a person falls, the inner plate of the thin anti-falling manhole cover extends downwards in a cone shape, pressure formed by the weight of the person is concentrated on the reinforcing part and the angle iron, and the reinforcing part is required to have enough strength.

No gap or a gap not larger than 2cm exists between the adjacent steel plates of the spirally arranged steel plates. When sealing is required, a thin anti-falling manhole cover inner plate without a gap between adjacent steel plates is adopted,

the sealing performance can be improved by arranging a flexible sealing strip at the gap between the steel plates;

the reinforcing part is provided with a plurality of first mounting holes 5;

still including being used for fixing the angle bar on the well head inner wall with well lid inner panel body, be equipped with second mounting hole 6 on one side of the angle bar, the second mounting hole is for having internal screw thread blind hole or through-hole.

When the angle iron is installed, one side of the angle iron with the second installation hole is arranged horizontally at the upper part, and the other side of the angle iron is arranged at the lower part and fixed with the inner wall of a wellhead; the reinforcing part is fixed with the angle iron through a bolt.

And the bolt penetrates through the first mounting hole and the second mounting hole from bottom to top and is fixedly mounted. When the bolt is installed, the nut of the bolt is positioned at the lower side of the reinforcing part, and the hidden arrangement can prevent thieves who are not familiar with the structure from having the trouble; when a thief wants to detach the thin anti-falling manhole cover inner plate, the steel plate adjacent to the reinforcing part needs to be propped open and pressed down, the bolt can be detached by the aid of the tool, the bolt can be detached by the aid of the special propping tool or by the aid of a person stepping on the steel plate, the crime cost of the thief is increased, and the anti-falling manhole cover inner plate can be effectively prevented from being lost.

And a monitoring device 7 with a signal transmitting function is arranged on the foot pedal. Monitoring devices can adopt the lower pressure-sensitive or photoelectric sensing device of cost, in this embodiment, monitoring devices is pressure sensing device, the back is accomplished in the installation, monitoring devices upper portion offsets with the well lid bottom, there is weak pressure between monitoring devices and well lid, monitoring devices does not outwards launch the signal, when the lid is opened, washed away or is lost, monitoring devices receives pressure return to zero, monitoring devices launches well lid disappearance signal to the external world, when people or thing fall into well lid inner panel body, monitoring devices receives pressure grow, monitoring devices launches the signal of falling to the external world. The real situation is judged through the pressure sensed by the monitoring device, and when the pressure is small and continuous, the well lid can be judged to be in the original position, and the monitoring device is not triggered to send a signal; when the sudden change sensed by the monitoring device is larger (exceeds a threshold value) and continues, whether people or objects fall (the situation can be triggered when the well cover sheet is damaged) can be judged, and a falling signal is transmitted to the outside; when the well lid is opened or stolen, the pressure borne by the monitoring device returns to zero, and the monitoring device transmits a well lid missing signal to the outside; the municipal department carries out corresponding processing according to the received signals and can monitor the overhaul progress of municipal workers according to the opened state of the well lid. In addition, the monitoring device is triggered to send out a falling signal, and can also send out alarm sound to guide people to rescue.

As shown in fig. 2-3, the manhole cover inner plate body support device further comprises a strutting device 8 for installing or dismantling the manhole cover inner plate body; the strutting arrangement is a Z-shaped or U-shaped bracket plate, the bottom of the bracket plate is lengthened, a first bending part 9 used for accommodating the reinforcing part is arranged at the end head of the upper part of the bracket plate, and a sinking part or a second bending part 10 is arranged at the end head of the lower part of the bracket plate.

During installation, the sinking part or the second bending part is clamped or pressed on the steel plate far away from the reinforcing part, the reinforcing part is lifted, the first bending part is clamped or pressed on the reinforcing part, so that the reinforcing part is stably supported to expose the lower space of the reinforcing part, and then the mounting and fixing are carried out by adopting bolts; the same principle is also applied to disassembly.

When people or objects fall, the inner plate of the thin anti-falling well cover is extended downwards in a cone shape under the pressure, enough buffer is formed in the falling process, and the people or the objects can naturally fall on the falling pedal and trigger the monitoring device. The steel plate elastic strength of the inner plate body of the well cover is higher, the deformation of people or objects is smaller when the people or the objects fall, and people can save themselves when falling more easily.

Example 2

As shown in fig. 4, similar to embodiment 1, it is different in that the foot pedal is semi-conical, the section of the steel plate is parallelogram, and the side inclination angle of the parallelogram is adapted to the side inclination angle of the semi-conical. The steel plate that the edge slope set up is favorable to slim dropproof well lid inner panel to recover the original state smoothly after expanding more.

Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thin anti-falling manhole cover inner plate is used for being installed on the lower side of a manhole cover and is characterized by comprising a manhole cover inner plate body, wherein the manhole cover inner plate body is formed by spirally winding steel plates and is in a plane or semi-cone shape; the inner end of the steel plate which is spirally arranged is a circular or polygonal foot-falling pedal which is horizontally arranged in the middle of the inner plate body of the well cover; a reinforced anti-rust layer is wrapped outside the steel plate; the reinforced antirust layer material is one of plastic, paint or a passivation layer;

the outer end of the steel plate which is spirally arranged is a thickened or widened reinforcing part;

a gap not greater than 2cm is formed between adjacent steel plates of the spirally arranged steel plates;

and flexible sealing strips are arranged between the steel plates.

2. The thin anti-falling manhole cover inner plate as claimed in claim 1, wherein the reinforcement portion is provided with a plurality of first mounting holes;

the well lid inner plate body is fixed on the inner wall of a well mouth through the angle iron, the second mounting hole is formed in one side of the angle iron, and the second mounting hole is a blind hole or a through hole with an internal thread.

3. The thin anti-falling manhole cover inner plate as claimed in claim 1, wherein the foot pedal is semi-cone-shaped, the section of the steel plate is parallelogram-shaped, and the side inclination angle of the parallelogram is adapted to the side inclination angle of the semi-cone-shaped.

4. The thin anti-falling manhole cover inner plate as claimed in claim 1, wherein the foot pedal is provided with a monitoring device with a signal transmitting function.

5. The thin anti-falling manhole cover inner plate according to claim 4, wherein the monitoring device is a pressure sensing device, after the installation is completed, the upper part of the monitoring device abuts against the bottom of the manhole cover, weak pressure exists between the monitoring device and the manhole cover, the monitoring device does not emit signals to the outside, when the manhole cover is opened, washed away or lost, the pressure applied to the monitoring device returns to zero, the monitoring device emits a manhole cover missing signal to the outside, when a person or an object falls into the manhole cover inner plate body, the pressure applied to the monitoring device is increased, and the monitoring device emits a falling signal to the outside.

6. The thin anti-falling manhole cover inner plate according to claim 1, further comprising a propping device for installing or detaching the manhole cover inner plate body; strutting arrangement is the mounting panel of a Z type or U type, and mounting panel bottom extension sets up, has the first kink that is used for holding the reinforcement on the end on mounting panel upper portion, has sinking portion or second kink on the end of mounting panel lower part.

7. The installation method for the thin anti-falling manhole cover inner plate as claimed in claim 2, wherein during installation, one side of the angle iron with the second installation hole is arranged on the upper portion and horizontally, and the other side of the angle iron is arranged on the lower portion and fixed with the inner wall of a wellhead; the reinforcing part is fixed with the angle iron through a bolt.

8. The thin anti-falling manhole cover inner plate according to claim 7, wherein the bolt penetrates through the first mounting hole and the second mounting hole from bottom to top and is fixedly mounted.