CN112177053B - Safe theftproof just has municipal administration well lid of preventing peculiar smell function - Google Patents

Abstract

The invention discloses a municipal well lid with safety, theft prevention and peculiar smell prevention functions, which comprises a well lid, wherein a plurality of rectangular drain holes are formed in the surface of the well lid, the rectangular drain holes penetrate through the whole well lid, an anti-theft device is arranged in the well lid, a rotating shaft is arranged in the middle of the well lid, the well lid is placed in a lid seat, a plurality of triangular iron blocks are arranged on the side surface and the bottom surface of the lid seat and are welded and fixed, round screw holes are formed in the bottom surface of the lid seat between the triangular iron blocks, a rectangular hole is formed in the side surface of the lid seat, the anti-theft device penetrates through the rectangular hole to fix the well lid, a protective cover is fixedly installed on the upper side of the lid seat, the protective cover is provided with two groups of inward protruding iron sheets which are bilaterally symmetrical, and a detachable steel wire protective net is arranged on the protective cover. The well cover disclosed by the invention emphasizes safety, reliability and theft prevention, ensures the attachment of the well cover and a road surface, avoids noise interference, enhances the drainage performance and isolates the peculiar smell exhausted underground.

Description

Safe theftproof just has municipal administration well lid of preventing peculiar smell function

Technical Field

The invention relates to the technical field of well lids, in particular to a municipal well lid which is safe and anti-theft and has an anti-peculiar smell function.

Background

The manhole cover is used for covering roads or deep wells at home and preventing people or objects from falling, can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers and the like according to materials, is generally circular, can be used for manhole covers of greenbelts, sidewalks, motor lanes, wharfs, alleys and the like, is a closure for the top of an access to underground facilities, and is required to be installed in places where public facilities such as tap water, telecommunications, electric power, gas, heat, fire protection, environmental sanitation and the like are installed.

The existing well lid does not generally have an anti-theft device, so often lose, not only cause economic loss, but also can endanger the safety of pedestrians and vehicles, because the well lid surface requires to be level and smooth, so be difficult to pin it with the common mode, most well lids and road surface are not laminated tightly, the tire can collide with the well lid when the vehicle is pressed, the well lid consequently becomes one of the noise sources in city, well lid and road surface can be laminated tightly and sewingly, the noise has both been stopped, the drainage efficiency is low when some well lids are not opened, can not isolate the peculiar smell of underground discharge, influence the appearance of city.

Disclosure of Invention

The invention aims to provide a municipal manhole cover which is safe, anti-theft and has an odor-resistant function, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a municipal manhole cover with safety, theft prevention and odor prevention functions comprises a manhole cover, wherein a plurality of rectangular drain holes are formed in the surface of the manhole cover and penetrate through the whole manhole cover, an anti-theft device is arranged inside the manhole cover, a rotating shaft is arranged in the middle of the manhole cover and penetrates through the anti-theft device and penetrates through the lower surface of the manhole cover, cover seats are arranged around the manhole cover, the manhole cover is placed in the cover seats, a plurality of triangular iron blocks are welded and fixed on the side surfaces and the bottom surface of the cover seats, circular screw holes are formed in the bottom surface of the cover seats among the triangular iron blocks, two sets of bilaterally symmetrical rectangular holes are formed in the side surfaces of the cover seats, the anti-theft device penetrates through the rectangular holes of the cover seats to fix the manhole cover on the ground, a protective cover is fixedly arranged on the upper side of the cover seats, bolts are used for rotationally fixing the protective cover and the cover seats on the ground through the screw holes, and the protective cover is provided with two sets of bilaterally symmetrical inward protruding iron sheets, and a detachable steel wire protective net is arranged on the protective cover.

Preferably, anti-theft device comprises four rectangular shape ironbars, the sawtooth has been seted up to rectangular shape ironbar one side, and rectangular shape ironbar one end is equipped with a rectangle piece that hinders, the inside parallel symmetry that falls in rectangular shape ironbar sawtooth one side, and two sets of upper and lower places and be groined type constitution anti-theft device, and rectangular shape ironbar passes lid seat side rectangle downthehole fixed connection well lid and lid seat.

Preferably, the middle position of the rotating shaft is provided with vertical sawteeth, the elongated iron strip is movably connected with the rotating shaft through the sawteeth, the top surface of the rotating shaft is provided with a handle which is pulled upwards, and a hole cover is spirally fixed in the hole of the well cover on the upper side of the rotating shaft.

Preferably, the bottom of the rectangular drain hole is provided with a peculiar smell prevention device, the peculiar smell prevention device is movably mounted on the bottom surface of the well lid, and the peculiar smell prevention device is obliquely arranged below the rectangular drain hole.

Preferably, prevent that peculiar smell device left side top fixedly connected with horizontal cylinder is rectangular, and installs the spring in the middle of the cylinder is rectangular, the rectangular both ends swing joint of cylinder is on the well lid bottom surface, and prevents the slant bottom plate right side fixed connection of peculiar smell device in the both sides of the rectangular middle spring of cylinder.

Preferably, the first magnet is transversely fixedly installed at the top of the left side of the inclined bottom plate of the odor prevention device, the second magnets are vertically symmetrically and fixedly installed on the bottom surface of the well cover, and the homopolar poles of the first magnets are opposite to the homopolar poles of the second magnets.

Preferably, the front and rear edges of the odor-preventing device are fixed with elastic plastic bags which are vertically communicated.

Preferably, a plurality of triangular groove has been seted up to the protective cover bottom, and protective cover fixed mounting when on the lid seat a plurality of triangular groove in protective cover bottom and the coincidence of lid seat triangle-shaped iron plate.

Preferably, the inner structure of the well lid is divided into three layers, and the anti-theft device penetrates through the inner connecting cover seat in the middle of the well lid.

Compared with the prior art, the invention has the beneficial effects that: the protective cover of the well lid is provided with two sets of inward protruding iron sheets which are bilaterally symmetrical, the upper protective cover of the well lid is provided with a detachable steel wire protective net, the grid of the detachable steel wire protective net filters large impurities to prevent the rectangular drain holes on the well lid from being blocked, the net structure of the detachable steel wire protective net increases the anti-skidding property to protect the surface of the well lid, and the damaged detachable steel wire protective net is replaced, thereby saving resources and enhancing the service life of products, the whole well lid is fixed on the ground by the protective cover and a lid seat through bolts, the anti-theft property is enhanced again, the fixing stability of the well lid and the road surface is enhanced, the shaking and noise generation caused by the vehicle or the pedestrian passing through the surface of the well lid are prevented, the urban noise pollution is caused, the life of residents is influenced, the plurality of screw holes and the triangular iron blocks are welded and fixed on the lid seat, and the stability of the whole well lid and the connection with the ground is further enhanced, the anti-theft device is formed by placing two groups of four long-strip iron strips with sawteeth up and down in a groined shape, the four long-strip iron strips are ensured to have the same motion mode when the anti-theft device rotates, the long-strip iron strips are movably connected with the vertical sawteeth of the rotating shaft through the sawteeth, the four long-strip iron strips can be driven to do telescopic motion simultaneously when the rotating shaft is ensured, so that the four long-strip iron strips are fixed into the ground through four rectangular holes penetrating through the cover seat, the rotating shaft adopts a sunken type, the hole cover is fixed by surface spiral, rainwater is prevented from entering the inside of the well cover, the anti-theft device is prevented from rusting, the service life of the well cover is reduced due to damage, resource waste is caused, the top surface of the rotating shaft is provided with an upward pull-up handle, the rotating shaft is conveniently pulled out upwards through a tool, the anti-theft device is controlled by rotating the rotating shaft, the bottom of the drain hole is provided with an anti-peculiar smell device, when water flows from the drain hole, the anti-peculiar smell device is impacted according to the size of water flow impact force, the anti-smell device is inclined to the bottom plate, the anti-odor device is enabled to be opened and closed downwards by the inclined bottom plate, the drainage efficiency is enhanced, when the water flow is ensured to be small by installing the spring, the device automatically returns to the original position, the drain hole is reduced to a certain degree, the odor is discharged out of the well cover from the drain hole, the first magnet is transversely and fixedly installed on the top of the left side of the inclined bottom plate of the anti-odor device, the second magnet is vertically and symmetrically and fixedly installed on the bottom surface of the well cover, the same poles of the first magnet and the second magnet repel each other, the water cannot be discharged when the drain hole is closed by the anti-odor device when the water discharge amount is small, the elastic plastic bags which are vertically communicated are fixed on the edges of the front side and the rear side of the anti-odor device, when the anti-odor device is opened and closed, the odor is prevented from overflowing from the drain hole, the internal structure of the well cover is divided into three layers, and the anti-theft device part and the lower surface are installed in the upper surface and the middle part, guarantee well lid leakproofness and whole well lid integrality, when whole well lid emphasizes safe and reliable theftproof, guarantee well lid and road surface laminating, avoid the vehicle to press the outdated tire can produce the collision with the well lid, cause the noise interference, strengthen the drainage performance simultaneously, also completely cut off secret exhaust peculiar smell.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a structural view of the anti-theft device of the present invention;

FIG. 4 is a view showing the structure of the odor preventing means in the present invention;

FIG. 5 is a front view of the odor control device of the present invention;

FIG. 6 is a front view of the present invention;

fig. 7 is a view showing the structure of the protective cover of the present invention.

In the figure: 1. a well cover; 2. a rectangular drain hole; 3. an anti-theft device; 31. a strip-shaped iron bar; 32. saw teeth; 33. a cuboid block; 4. a rotating shaft; 5. a cover seat; 6. a triangular iron block; 7. a screw hole; 8. a rectangular hole; 9. a protective cover; 10. a raised iron sheet; 11. the steel wire protective net can be disassembled; 12. a bolt; 13. an odor prevention device; 14. an orifice cover; 15. a handle; 16. a spring; 17. an inclined bottom plate; 18. a magnet I; 19. a second magnet; 20. an elastic plastic bag; 21. a triangular groove; 22. and (4) vertical saw teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a safe and anti-theft municipal manhole cover with an anti-odor function comprises a manhole cover 1, wherein a plurality of rectangular drain holes 2 are formed in the surface of the manhole cover 1, the rectangular drain holes 2 penetrate through the whole manhole cover 1, an anti-theft device 3 is arranged inside the manhole cover 1, a rotating shaft 4 is arranged in the middle of the manhole cover 1, the rotating shaft 4 penetrates through the anti-theft device 3 and penetrates through the lower surface of the manhole cover 1, cover bases 5 are arranged around the manhole cover 1, the manhole cover 1 is placed in the cover bases 5, a plurality of triangular iron blocks 6 are arranged on the side surface and the bottom surface of each cover base 5 and are welded and fixed, round screw holes 7 are formed in the bottom surface of each cover base 5 between the triangular iron blocks 6, two groups of bilaterally symmetrical rectangular holes 8 are formed in the side surface of each cover base 5, the anti-theft device 3 penetrates through the rectangular holes 8 of each cover base 5 to fix the manhole cover 1 on the ground, a protective cover 9 is fixedly arranged on the upper side of each cover base 5, and a bolt 12 is used for rotationally fixing the protective cover 9 and the cover bases 5 on the ground through the screw holes 7, the protective cover 9 is provided with two groups of bilaterally symmetrical inward protruding iron sheets 10, and the protective cover 9 is provided with a detachable steel wire protective net 11.

In the invention: anti-theft device 3 comprises four rectangular shape ironbars 31, sawtooth 32 has been seted up to rectangular shape ironbar 31 one side, and 31 one end of rectangular shape ironbar is equipped with a cuboid piece 33 that hinders, rectangular shape ironbar 31 has sawtooth 32 one side to fall to parallel symmetry inwards, and two sets of upper and lower places and be groined type constitution anti-theft device 3, and rectangular shape ironbar 31 passes 5 side rectangular hole 8 internal fixed connection well lids 1 of apron seat and apron seat 5, anti-theft device 3 adopts four rectangular shape ironbars 31 that have sawtooth 32 two sets of upper and lower places to be groined type constitution, four rectangular shape ironbars 31 become the same motion mode when guaranteeing anti-theft device 3 to rotate, adopt rectangular shape ironbar 31 to pass through sawtooth 32 swing joint pivot 4, can drive four rectangular shape ironbars 31 simultaneously when guaranteeing rotatory pivot 4 and carry out concertina movement, thereby fix in ground through running through four rectangular hole 8 of apron seat 5.

In the invention: 4 intermediate positions in pivot are equipped with vertical sawtooth 22, and rectangular shape iron strip 31 passes through the vertical sawtooth 22 of sawtooth 32 swing joint pivot 4, upwards pull-up's handle 15 is seted up to 4 top surfaces in pivot, 4 upside well lids of pivot 1 are seted up downthehole spiral and are fixed with handhole door 14, pivot 4 adopts the formula of sinking, fixed handhole door 14 of surface spiral, prevent that the rainwater from getting into inside the well lid 1, cause anti-theft device 3 to rust, thereby damage and cause 1 life of well lid to reduce, cause the wasting of resources, upwards pull-up handle 15 has been seted up to 4 top surfaces in pivot, conveniently pull out pivot 4 upwards through the instrument, thereby rotate 4 control anti-theft device 3 in pivot.

In the invention: the bottom of the rectangular drain hole 2 is provided with the peculiar smell prevention device 13, the peculiar smell prevention device 13 is movably arranged on the bottom surface of the well lid 1, the peculiar smell prevention device 13 is obliquely arranged under the rectangular drain hole 2 through the bottom plate 17, peculiar smell is mainly emitted from the rectangular drain hole 2, and the peculiar smell can be prevented from being emitted to the ground through the rectangular drain hole 2 in an isolated mode.

In the invention: prevent that peculiar smell device 13 left side top fixedly connected with horizontal cylinder is rectangular, and install spring 16 in the middle of the cylinder is rectangular, rectangular both ends swing joint of cylinder is on 1 bottom surface of well lid, and prevent that peculiar smell device 13's slant bottom plate 17 right side fixed connection is in the both sides of the rectangular intermediate spring 16 of cylinder, when water flows in from the discharge opening, strike slant bottom plate 17 according to the size of discharge impact force, make slant bottom plate 17 open and shut downwards, strengthen drainage efficiency, it is little that installation spring 16 guarantees discharge, the device is automatic to get back to original position, reduce to a certain extent the wash port and reduce the smell and discharge well lid 1 outside from the wash port.

In the invention: a first magnet 18 is transversely and fixedly installed on the top of the left side of the inclined bottom plate 17 of the peculiar smell preventing device 13, a second magnet 19 is vertically and symmetrically and fixedly installed on the bottom surface of the well lid 1, the same poles of the first magnet 18 and the second magnet 19 are opposite, and the principle that the same poles of the first magnet 18 and the second magnet 19 repel each other is adopted, so that the phenomenon that water cannot be discharged when the water discharge amount is small due to the fact that the drain holes are closed by the peculiar smell preventing device 13 is avoided.

In the invention: the front and back side edges of the peculiar smell prevention device 13 are fixed with elastic plastic bags 20, and the elastic plastic bags 20 are vertically communicated, so that rainwater can be normally discharged and underground peculiar smell can be isolated from the rectangular drain holes 2 of the well lid 1.

In the invention: a plurality of triangular groove 21 has been seted up to protective cover 9 bottom, and protective cover 9 when protective cover 9 fixed mounting is on lid seat 5, a plurality of triangular groove 21 in bottom and the coincidence of lid seat 5 triangle-shaped iron plate 6 guarantee that protective cover 9 and lid seat 5 fixed connection are more stable.

In the invention; 1 inner structure of well lid divide into the three-layer altogether, and anti-theft device 3 runs through 1 middle internal connection lid seats of well lid 5, guarantees 1 leakproofness of well lid and 1 integrality of whole well lid.

The working principle is as follows: when the well lid 1 is installed, all parts of the well lid 1 are transported to a place to be installed, the screw penetrates through the screw hole 7 on the lid seat 5 to fixedly install the lid seat 5 on the upper side of a well mouth, then the well lid 1 is placed in the lid seat 5 to enable the well lid 1 to be stably placed on the well mouth, the rotating shaft 4 is pulled upwards to the surface of the well lid 1 through the handle 15 on the upper side surface of the rotating shaft 4, the rotating shaft 4 is clamped through a tool such as a wrench and the like to rotate the upper side surface of the rotating shaft 4, the vertical sawtooth 22 of the rotating shaft 4 is rotated to drive the sawtooth 32 of the anti-theft device 3 to move to drive the strip-shaped iron bar 31 to do telescopic motion, when the cuboid block 33 at the top end of one side of the strip-shaped iron bar 31 clamps the vertical sawtooth 22 of the rotating shaft 4, the rotating shaft 4 stops rotating, the strip-shaped iron bar 31 penetrates through the rectangular hole 8 of the lid seat 5 to be fixed on the inner wall of the well mouth, the protective cover 9 is buckled on the lid seat 5, the triangular groove 21 of the protective cover 9 is aligned to the triangular iron block 6 on the lid seat 5, the protective cover 9 and the cover seat 5 are fixed on a well mouth through bolts 12, the detachable steel wire protective net 11 is installed at the middle position of the protective cover 9 on the upper side of the well lid 1 through screws, rainwater filters larger impurities through meshes of the detachable steel wire protective net 11 and flows into the well mouth on the lower portion of the well lid 1 from the rectangular drain hole 2, when water flows into the bottom of the rectangular drain hole 2, the water flow impacts the inclined bottom plate 17, when the accumulated water on the ground is more, the water flow speed flowing into the well lid 1 is higher, the impact force of the water flow on the inclined bottom plate 17 is higher, the inclined bottom plate 17 enables the inclined bottom plate 17 to open and close downwards through the water flow impact force, the drainage diameter of the drain hole at the bottom of the rectangular drain hole 2 is increased, the drainage speed is accelerated, when the inclined bottom plate 17 opens and closes downwards to be vertical to the rectangular drain hole 2, the drainage efficiency is maximum, the elastic plastic bag 20 fixedly installed on the peculiar smell prevention device 13 is enlarged along with the opening and closing of the opening of the inclined bottom plate 17, the floor water accumulation is reduced, the water discharge to the well lid 1 is reduced, the impact force of water flow on the inclined bottom plate 17 is reduced, the spring 16 at the top end of the left side is reduced by the impact of the water flow on the inclined bottom plate 17 and is slowly tightened, the whole peculiar smell preventing device 13 is tightened, the elastic plastic bag 20 is tightened along with the tightening, when the peculiar smell preventing device 13 is tightened to a certain degree, the magnet I18 is transversely and fixedly installed at the top of the left side of the inclined bottom plate 17 of the peculiar smell preventing device 13, the magnet II 19 is vertically and symmetrically and fixedly installed on the bottom surface of the well lid 1, the homopolar poles of the magnet I18 and the magnet II 19 are opposite, due to the principle that the homopolar poles of the magnet I18 and the magnet II 19 repel each other, the peculiar smell preventing device 13 is not closed, the bottom of the elastic plastic bag 20 is tightly attached together, the underground peculiar smell is prevented from being emitted from the rectangular drain hole 2, when the well lid 1 needs to be opened for draining or enters the work from the well lid 1, only needs to open the protective cover 9 through spiral rotation, 1 intermediate position handhole door 14 of well lid is opened in the rotation of rethread, collude 4 top surfaces of pivot 15 through the instrument and pull up pivot 4, rethread rotates pivot 4 and drives rectangular shape ironbar 31 and take out and contract, make rectangular shape ironbar 31 contract inside well lid 1 from 5 rectangular hole 8 of lid seat, pull up well lid 1 through the instrument and just can carry out the work of going next step, use for a long time when well lid 1, lead to the surface can dismantle 11 wearing and tearing of steel wire protection network seriously can not filter and when anti-skidding functions, only need more renew can dismantle steel wire protection network 11.

In summary, the following steps: the invention discloses a well lid 1, wherein a protective cover 9 of the well lid 1 is provided with two sets of bilaterally symmetrical inward protruding iron sheets 10, a detachable steel wire protective net 11 is arranged on the protective cover 9 on the upper side of the well lid 1, the grid of the detachable steel wire protective net 11 filters out large-point impurities to prevent the rectangular drain hole 2 on the well lid 1 from being blocked, the net structure of the detachable steel wire protective net 11 increases the anti-skid property, the surface damage of the well lid 1 can be protected, and the damaged detachable steel wire protective net 11 can be replaced, thereby saving resources, prolonging the service life of products, the protective cover 9 and a lid seat 5 are adopted to fix the whole well lid 1 on the ground through bolts 12, the anti-theft property is enhanced again, the fixing stability of the well lid 1 and the road surface is also enhanced, vehicles or pedestrians are prevented from shaking and sending noise when passing through the surface of the well lid 1, urban noise pollution is caused, the life of neighboring residents is influenced, a plurality of screw holes 7 and triangular iron blocks 6 are welded and fixed on the lid seat 5, further strengthen the stability of the whole well lid 1 and the connection with the ground, the anti-theft device 3 is formed by placing two groups of four strip-shaped iron strips 31 with saw teeth 32 up and down in a # -shaped manner, the four strip-shaped iron strips 31 are ensured to have the same motion mode when the anti-theft device 3 rotates, the strip-shaped iron strips 31 are movably connected with the vertical saw teeth 22 of the rotating shaft 4 through the saw teeth 32, the four strip-shaped iron strips 31 can be driven to do telescopic motion when the rotating shaft 4 is rotated, so as to be fixed into the ground through four rectangular holes 8 penetrating through the cover seat 5, the rotating shaft 4 is sunken, the hole lid 14 is fixed by surface spiral, rainwater is prevented from entering the inside of the well lid 1, the anti-theft device 3 is prevented from rusting, the service life of the well lid 1 is reduced due to damage, the resource waste is caused, the handle 15 is arranged on the top surface of the rotating shaft 4, the rotating shaft 4 is convenient to be pulled out upwards through a tool, so as to rotate the rotating shaft 4 to control the anti-theft device 3, the bottom of the drain hole is provided with an odor-proof device 13, when water flows in from the drain hole, the oblique bottom plate 17 of the odor-proof device 13 is impacted according to the impact force of the water flow, the oblique bottom plate 17 of the odor-proof device 13 is enabled to open and close downwards, the drainage efficiency is enhanced, the spring 16 is installed to ensure that the water flow is small, the device automatically returns to the original position, the drain hole is reduced to a certain degree, the odor is discharged out of the well lid 1 from the drain hole, the principle that like poles of a magnet I18 and a magnet II 19 repel each other is adopted, the water cannot be discharged when the drain hole is discharged due to the fact that the drain hole is closed by the odor-proof device 13, the elastic plastic bags 20 which are communicated up and down are fixed on the edges of the front side and the back side of the odor-proof device 13, the elastic plastic bags 20 are pulled to open for drainage when the odor-proof device 13 is opened, the elastic plastic bags 20 are closed to prevent the odor from overflowing from the drain hole when the drainage is not performed, the internal structure of the well lid 1 is divided into three layers, and anti-theft device 3 runs through internal connection lid seat 5 in the middle of well lid 1, guarantees well lid 1 leakproofness and whole well lid 1 integrality, when whole well lid 1 emphasizes safe and reliable theftproof, guarantees well lid 1 and road surface laminating, avoids the vehicle to press the time tire can produce the collision with well lid 1, causes the noise interference, strengthens drainage performance simultaneously, also completely cuts off secret exhaust peculiar smell.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a municipal administration well lid of safe theftproof and having prevent peculiar smell function, includes well lid (1), its characterized in that: the manhole cover comprises a manhole cover body (1), a plurality of rectangular drain holes (2) are formed in the surface of the manhole cover body (1), the rectangular drain holes (2) penetrate through the whole manhole cover body (1), an anti-theft device (3) is arranged inside the manhole cover body (1), a rotating shaft (4) is arranged in the middle of the manhole cover body (1), the rotating shaft (4) penetrates through the anti-theft device (3) and penetrates through the lower surface of the manhole cover body (1), cover seats (5) are arranged on the periphery of the manhole cover body (1), the manhole cover body (1) is placed in the cover seats (5), a plurality of triangular iron blocks (6) are arranged on the side surfaces and the bottom surfaces of the cover seats (5) in a welded mode and fixed, round screw holes (7) are formed in the bottom surfaces of the cover seats (5) between the triangular iron blocks (6), two groups of bilaterally symmetrical rectangular holes (8) are formed in the side surfaces of the cover seats (5), and the anti-theft device (3) penetrates through the rectangular holes (8) of the cover seats (5) to fix the manhole cover body (1) on the ground, a protective cover (9) is fixedly installed on the upper side of the cover seat (5), the protective cover (9) and the cover seat (5) are rotationally fixed on the ground through a bolt (12) through a screw hole (7), the protective cover (9) is provided with two groups of inward-protruding iron sheets (10) which are bilaterally symmetrical, and a detachable steel wire protective net (11) is arranged on the protective cover (9); the bottom of the rectangular drain hole (2) is provided with an odor-resistant device (13), the odor-resistant device (13) is movably arranged on the bottom surface of the well lid (1), and the odor-resistant device (13) is obliquely arranged below the rectangular drain hole (2) through a bottom plate (17); the top end of the left side of the peculiar smell preventing device (13) is fixedly connected with a transverse cylindrical strip, a spring (16) is arranged in the middle of the cylindrical strip, two ends of the cylindrical strip are movably connected to the bottom surface of the well lid (1), and the right side of an inclined bottom plate (17) of the peculiar smell preventing device (13) is fixedly connected to two sides of the cylindrical strip middle spring (16); a first magnet (18) is transversely and fixedly installed on the top of the left side of the inclined bottom plate (17) of the peculiar smell prevention device (13), second magnets (19) are vertically and symmetrically and fixedly installed on the bottom surface of the well cover (1), and the same poles of the first magnets (18) and the second magnets (19) are opposite; the front and rear side edges of the peculiar smell preventing device (13) are fixed with elastic plastic bags (20), and the elastic plastic bags (20) are vertically communicated.

2. The municipal well lid with the safety, the theft prevention and the peculiar smell prevention functions as claimed in claim 1, is characterized in that: anti-theft device (3) comprise four rectangular shape iron bars (31), sawtooth (32) have been seted up to rectangular shape iron bar (31) one side, and rectangular shape iron bar (31) one end is equipped with a cuboid stop block (33), sawtooth (32) one side on rectangular shape iron bar (31) is inwards fallen to parallel symmetry, and two sets of upper and lower places and be groined type constitution anti-theft device (3), and rectangular shape iron bar (31) pass lid seat (5) side rectangular hole (8) internal fixation and connect well lid (1) and lid seat (5).

3. The municipal well lid with the safety, the theft prevention and the peculiar smell prevention functions as claimed in claim 2, is characterized in that: pivot (4) intermediate position is equipped with vertical sawtooth (22), and rectangular shape iron bar (31) pass through sawtooth (32) swing joint pivot (4), handle (15) that upwards pull-up are seted up to pivot (4) top surface.

4. The municipal well lid with the safety, the theft prevention and the peculiar smell prevention functions as claimed in claim 1, is characterized in that: a plurality of triangular groove (21) have been seted up to protective cover (9) bottom, and protective cover (9) fixed mounting is on lid seat (5), and a plurality of triangular groove (21) of protective cover (9) bottom and lid seat (5) triangle-shaped iron plate (6) coincidence.

5. The municipal well lid with the safety, the theft prevention and the peculiar smell prevention functions as claimed in claim 1, wherein the internal structure of the well lid (1) is divided into three layers, and the theft prevention device (3) penetrates through the middle of the well lid (1) and is internally connected with the lid base (5).

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