CN114592546B

CN114592546B - Spiral anti-falling manhole cover inner plate

Info

Publication number: CN114592546B
Application number: CN202210357932.6A
Authority: CN
Inventors: 冯世光; 周梓轩; 吴琦; 李青; 何明标
Original assignee: Nantong University
Current assignee: Nantong University
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-09-27
Anticipated expiration: 2042-04-06
Also published as: CN114592546A

Abstract

The invention relates to a spiral anti-falling manhole cover inner plate which is used for being installed at 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 winding steel bars or steel plates which are spirally arranged, and the steel plates are vertically arranged; the inner plate body of the well cover is round or square which is matched with the shape of the well mouth; the inner end of the steel bar or steel plate which is spirally arranged is a round or polygonal foot-falling pedal which is horizontally arranged at the upper side of the middle part of the inner plate body of the well lid; a reinforced anti-rust layer is wrapped outside the steel plate; the reinforced antirust layer is made of plastic or paint; the spiral anti-falling manhole cover inner plate can be suitable for various circular or square wellheads, is simple in structure, low in cost, small in thickness and convenient to install and maintain, can be used for safely transforming the wellheads of the existing inspection wells, and has a good application prospect.

Description

Spiral anti-falling manhole cover inner plate

Technical Field

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

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 prior well covers are mostly made of cast iron and have certain economic value, so the well covers have the phenomenon of being stolen, and the well covers in recent years are mostly made of steel fiber concrete with low economic value or reinforced plastic and the like, so the stealing phenomenon is reduced; in addition, the manhole covers are electromagnetic anti-theft, silicon-plastic composite, resin, magnesite and the like. The permanent magnet of the electromagnetic anti-theft well cover is easy to rust in a humid environment, so that the magnetic force is invalid and the well cover cannot be opened; silicon-plastic composite, resin, magnesite and the like have poor practicability and have safety problems. Generally speaking, these novel well lids are inferior to cast iron well lids in terms of strength, life, etc., and there still exist well lid losses caused by phenomena such as well lid being pushed up and washed away by water in the underground pipe network, well lid breakage, human damage, etc., and once a pedestrian falls into the well without attention, serious injuries are likely to be caused.

In order to prevent the pedestrian from falling, except setting up and enclosing fender, warning mark auxiliary measure such as, the most important still sets up the dropproof device at the well head, and this is the most effective method at all, and it is more to adopt at present that the solution sets up protection string net, the plastic slab that has the elastic webbing etc. in well head department, for example: 2019212804967, entitled "a protective net device for water supply and drainage well cover", discloses a protective net device for water supply and drainage well cover, which comprises a water supply and drainage well wall and a sewer well cover, wherein the top of the water supply and drainage well wall is provided with the sewer well cover, a protective device for water supply and drainage well cover is arranged in the water supply and drainage well wall, the protective device for water supply and drainage well cover comprises a fixed block, a telescopic device, a connecting rod and an extrusion plate, the periphery of the fixed block is provided with the telescopic device, the end part of the telescopic device is connected with the connecting rod, the end part of the connecting rod is fixedly connected with the extrusion plate, the inner side of the extrusion plate is provided with a protective net fixing device, the utility model can drive the extrusion plate to stretch and unfold through the arrangement of the telescopic device, thereby the extrusion plate can be tightly attached to the water supply and drainage well walls with different diameters, and through the arrangement of the protective net fixing device, can increase and reduce the diameter of protection network, use with the cooperation of plumbing well lid protector for the protecting effect is better.

The anti-falling structure provided with the protective net or the protective net with the elastic belt has a good protective effect, but the protective structure has short service life, is troublesome to install or needs corresponding supporting equipment, has relatively high cost, and can still cause damage due to insufficient buffering when falling.

Disclosure of Invention

The invention aims to provide a spiral anti-falling manhole cover inner plate which is convenient to install and maintain, good in anti-theft effect, good in anti-falling buffering effect and has a monitoring function.

In order to solve the technical problem, the invention discloses a spiral 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 winding steel bars or steel plates which are spirally arranged, and the steel plates are vertically arranged; the inner plate body of the well cover is round or square which is matched with the shape of the well mouth; the inner end of the steel bar or steel plate which is spirally arranged is a round or polygonal foot-falling pedal which is horizontally arranged at the upper side of the middle part of the inner plate body of the well lid; a reinforced anti-rust layer is wrapped outside the steel plate; the reinforced antirust layer is made of plastic or paint.

Preferably, the outer end of the spirally arranged steel plate is a reinforced part processed by thickening or widening.

Preferably, the reinforcement portion is provided with a through hole for a padlock.

Preferably, the manhole cover further comprises a fixing device for installing and fixing the manhole cover inner plate body.

Preferably, the fixing device comprises a bottom plate and a mounting pipe fixed on the bottom plate, the mounting pipe is a flat pipe with a cavity in the middle, and the cavity is matched with the reinforcing part in size.

Preferably, the fixing device comprises a first mounting plate and a second mounting plate, the first mounting plate is used for being fixedly connected with the inner wall of the wellhead, the second mounting plate is used for being fixedly connected with the reinforcing portion, and the upper ends of the first mounting plate and the second mounting plate are hinged.

Preferably, the second mounting plate is a metal plate with mounting holes.

Preferably, the middle or lower part of the second mounting plate is a pipe with a cavity on the inner side, and the cavity is adaptive to the size of the reinforcing part.

Preferably, the upper part of the fixing device is provided with a sensing device which is used for sensing whether the well lid is in an open state and has a signal transmitting function.

Preferably, the foot pedal has a diameter of not less than 20 cm; and the distance between the adjacent steel plates of the spirally arranged steel plates is not more than 5 cm.

The spiral anti-falling well lid inner plate can be suitable for various round or square well mouths, is convenient to install, has low requirement on the matching precision of parts, and has a better anti-theft effect; 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 sensing device can be used for monitoring the opening of the well lid, and is convenient for municipal administration supervision; compared with a common anti-falling net or a baffle with support property, the spiral anti-falling well lid 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, and can start operation by removing or turning up the well lid inner plate body when facilities in an inspection well are simply maintained or overhauled; the spiral anti-falling manhole cover inner plate is simple in structure, low in cost, small in thickness and convenient to install and maintain, 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 structural schematic diagram of a square spiral anti-falling manhole cover inner plate.

Fig. 2 is a schematic structural diagram of a circular spiral anti-falling manhole cover inner plate (the fixing device is separately shown).

Fig. 3 is a schematic structural view of a second fixing device.

Fig. 4 is a schematic structural view of a third fixing device.

The reference numbers in the figures are: 1-a well cover inner plate body, 2-a steel plate, 3-a foot pedal, 4-a reinforcing part, 5-a through hole, 6-a fixing device, 7-a bottom plate, 8-an installation pipe, 9-an induction device, 10-a first installation plate, 11-a second installation plate and 12-a pipe.

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. 1-2, a spiral 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, the manhole cover inner plate body is formed by winding steel bars or steel plates 2 which are spirally arranged, the steel plates are vertically arranged, and for the steel plates with the same specification, the vertically arranged steel plates have stronger resilience relative to the horizontally arranged steel plates, so that the steel plates can be conveniently processed and bent into various shapes, and can be processed and customized according to the shapes and sizes of different wellheads;

the inner plate body of the well cover is round or square which is matched with the shape of the well mouth; the inner end of the steel bar or steel plate which is spirally arranged is a round or polygonal foot-falling pedal 3 which is horizontally arranged at the upper side of the middle part of the inner plate body of the well cover; a reinforced anti-rust layer is wrapped outside the steel plate; the reinforced antirust layer is made of plastic or paint.

The outer end of the spirally arranged steel plate is a reinforced part 4 which is thickened or widened (or strengthened by heat treatment). When someone falls, the spiral anti-falling well lid inner plate extends downwards in a cone shape, pressure formed by the weight of the person is concentrated on the reinforcing part and the fixing device, and the reinforcing part is required to have enough strength.

The reinforcement is provided with a through hole 5 for a padlock.

Still including being used for the installation fixed well lid inner panel body fixing device 6.

The fixing device comprises a bottom plate 7 and a mounting tube 8 fixed on the bottom plate, wherein the mounting tube 8 is a flat tube with a cavity in the middle, and the cavity is matched with the reinforcing part in size.

The upper part of the fixing device is provided with an induction device 9 which is used for sensing whether the well lid is in an open state or not and has a signal emission function. The sensing device can adopt a pressure-sensitive or photoelectric sensing device with lower cost, is triggered after the well lid is opened, and sends a signal to the outside, so that the monitoring of municipal departments is facilitated.

The diameter of the foot-falling pedal is not less than 20 cm; and the distance between the adjacent steel plates of the spirally arranged steel plates is not more than 5 cm. Generally, the diameter of the foot pedal is not smaller than 20cm, so as to provide sufficient foot for the user.

If necessary, a steel wire rope or a rod for limiting the maximum deformation of the well cover inner plate body and used for the pocket bottom can be arranged under the well cover inner plate body, and the falling foot pedal stops moving after being touched, so that a falling person with large weight can climb out of the well cover inner plate body in time to save self.

During the installation, earlier with fixing device's bottom plate welding or bolt fastening on the well head inner wall, keep flat well lid inner panel body in well head department, insert the rib in the installation pipe simultaneously, the through-hole exposes, hangs an iron lock on the through-hole and can prevent that the rib from taking out. When people or objects fall, the inner plate of the spiral anti-falling well cover is downwards extended in a cone shape under the pressure, and sufficient buffer is formed in the falling process. The steel plate elastic strength of the inner plate body of the well lid is higher, the deformation of people or objects is smaller when the people or the objects fall, and people can save themselves more easily when falling.

Example 2

As shown in fig. 3, similar to embodiment 1, the difference is that the fixing device comprises a first mounting plate 10 for connecting and fixing with the inner wall of the wellhead and a second mounting plate 11 for connecting and fixing with the reinforcement part, and the upper ends of the first mounting plate and the second mounting plate are hinged.

The second mounting plate is a metal plate with a mounting hole.

During the installation, be fixed in the well head inner wall with first mounting panel, the second mounting panel is connected fixedly with the rib, and this makes well lid inner panel body can overturn and open, convenient the maintenance after installing the well head.

Example 3

As shown in fig. 4, similarly to embodiment 2, the difference is that the second mounting plate is a pipe 12 having a cavity on the inner side, the cavity being adapted to the size of the reinforcing portion. During the installation, with first mounting panel welded fastening in well head inner wall, the rib inserts in the flat intraductal and hang a lock on the through-hole of second mounting panel, also can prevent losing when convenient the maintenance.

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 spiral 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 winding steel bars or steel plates which are spirally arranged, and the steel plates are vertically arranged; the inner plate body of the well cover is round or square which is matched with the shape of the well mouth; the inner end of the steel bar or steel plate which is spirally arranged is a round or polygonal foot-falling pedal which is horizontally arranged at the upper side of the middle part of the inner plate body of the well cover; a reinforced anti-rust layer is wrapped outside the steel plate; the reinforced antirust layer is made of plastic or paint.

2. The spiral fall prevention manhole cover inner plate according to claim 1, wherein the outer end of the steel plate arranged in a spiral manner is a reinforcing part processed by thickening or widening.

3. The spiral fall prevention manhole cover inner plate according to claim 2, wherein the reinforcement portion is provided with a through hole for a padlock.

4. The spiral fall prevention manhole cover inner plate according to claim 2, further comprising a fixing device for installing and fixing the manhole cover inner plate body.

5. The spiral fall-prevention manhole cover inner plate according to claim 4, wherein the fixing device comprises a bottom plate and a mounting pipe fixed on the bottom plate, the mounting pipe is a flat pipe with a cavity in the middle, and the cavity is matched with the reinforcing part in size.

6. The spiral fall prevention manhole cover inner plate according to claim 4, wherein the fixing device comprises a first mounting plate and a second mounting plate, the first mounting plate is fixedly connected with the inner wall of a wellhead, the second mounting plate is fixedly connected with the reinforcing portion, and the upper ends of the first mounting plate and the second mounting plate are hinged.

7. The spiral fall prevention manhole cover inner plate according to claim 6, wherein the second mounting plate is a metal plate with mounting holes.

8. The spiral falling-proof manhole cover inner plate according to claim 6, wherein the middle or lower part of the second mounting plate is a pipe with a cavity on the inner side, and the cavity is matched with the reinforcing part in size.

9. The spiral fall-prevention manhole cover inner plate according to claim 4, wherein an induction device with a signal emission function for sensing whether the manhole cover is in an open state is arranged at the upper part of the fixing device.

10. The spiral fall prevention manhole cover inner plate according to claim 1, wherein the foot pedal has a diameter of not less than 20 cm; the distance between the adjacent steel plates of the spirally arranged steel plates is not more than 5 cm.