CN208604634U - One kind municipal well lid easy to maintain and extracting tool - Google Patents

Abstract

The utility model provides one kind municipal well lid easy to maintain and extracting tool, belongs to municipal works apparatus field.It solves the problems, such as that existing well lid disassembly is difficult.This municipal well lid easy to maintain includes well seat and lid, well seat inner wall is equipped with baffle ring, it further include the support column that several bottom ends and baffle ring top surface are fixed, support top end is fixed with supporting block, it further include support plate, support plate is equipped with several supported holes, and several support columns are threaded through in supported hole respectively, support plate top surface outer is fixed with anti-sand sleeve, it further include the compressed spring of set on the support columns, run through the removal hole of lid top and bottom there are two setting on lid, removal hole includes circular hole sets of holes, sets of holes two sides hole wall is equipped with the poroid fixation hole of notch shape, lid bottom surface sets the notch shape channel-shaped fixing groove being located on sets of holes hole wall there are two cell wall, two fixation holes are centrosymmetric structure using covering axially bored line as axis, two fixing grooves are centrosymmetric structure using covering axially bored line as axis.This lid can reduce disassembly difficulty.

Description

One kind municipal well lid easy to maintain and extracting tool

Technical field

The utility model belongs to municipal works equipment technical field, is related to one kind municipal well lid easy to maintain and extracting tool.

Background technique

Important component of the sewer pipe as sewerage system already becomes the important municipal administration in urban construction Job facilities.After well lid used at present installs and uses a period of time, the gap between well seat and lid will be filled up by silt, Making to be again turned on becomes very laborious, can not open when serious or damage to well lid.

It is existing application No. is 201620468375.5, the Chinese utility model of entitled " municipal engineering manhole cover easy to maintain " is special Annular anti-sand sleeve is arranged at the gap between well seat and lid, and is fixed on anti-sand sleeve and lid underrun bullet for benefit The adjustable plate of spring connection, when disassembly, bolt is screwed on adjustment hole, so that bolt bottom end is pushed adjustable plate, and make under anti-sand sleeve It moves, and is separated with lid outer wall, filling up gap to avoid silt causes to open difficulty；But it has the following problems:

1, since lid is pressurized often, and use environment is complicated, thus the internal screw thread of adjustment hole be easy fail in compression or by Corrosion and damage, it is extremely difficult to keep complete, bolt can not be coupled after damage；

2, it since adjustable plate and anti-sand sleeve are fixed with lid, even if adjustable plate drives anti-sand sleeve to move down, but dismantles During lid, it is desired nonetheless to split out anti-sand sleeve together with lid out of well seat, it is therefore desirable to axially split out lid along well seat, and whole Anti-sand sleeve outer wall is always with wall friction in well seat in a disassembly process, although being avoided that sandstone influence, disassembly difficulty is not also low.

3, adjustable plate is circular plate structure, will increase lid weight, while influencing manhole cover structure.It is therefore desirable to carry out It improves.

Summary of the invention

The purpose of this utility model is to provide a kind of use occasion more for the above-mentioned problems in the prior art Extensively, and more convenient labour-saving municipal well lid easy to maintain and extracting tool are dismounted.

The purpose of this utility model can be realized by the following technical scheme: a kind of municipal well lid easy to maintain, including annulus Shape well seat and the circular plate lid being located in well seat, it is characterised in that: the well seat inner wall is equipped with annular baffle ring, baffle ring top Face is lower than well seat top surface, and vertical with well seat inner wall, further includes the support column that several bottom ends and baffle ring top surface are fixed, supports column length It is parallel with baffle ring axis to spend direction, support top end is fixed with supporting block, several supporting blocks and baffle ring axial line distance phase Together, and several supporting blocks to surround the plane to be formed parallel with baffle ring top surface, further include circular ring shape plate-like support plate, the support Plate is equipped with several supported holes, and several support columns are threaded through respectively in several supported holes, the support plate top surface Outer is fixed with round shell-like anti-sand sleeve, further includes set compressed spring on the support columns, compressed spring both ends respectively with baffle ring top Face and support plate bottom surface offset, and are set on the lid there are two the removal hole for running through lid top and bottom, removal hole includes Circular hole sets of holes, set axially bored line is parallel with lid axis, and sets of holes two sides hole wall is equipped with the poroid fixation hole of notch shape, and lid bottom surface is set It is located at the notch shape channel-shaped fixing groove on sets of holes hole wall there are two cell wall, two fixation holes are centrosymmetric to cover axially bored line as axis Structure, two fixing grooves are centrosymmetric structure using covering axially bored line as axis, and two fixation holes along sets of holes axis projection around set Axially bored line is overlapped with two fixing grooves along sets of holes axis projection after being rotated by 90 °；

Several supporting blocks are withstood on respectively on lid bottom surface, and the compressed spring pushes support plate bottom surface, make to prevent Sand set is between lid and well seat, and anti-sand sleeve inner and outer wall is adjacent to lid outer wall and well seat inner wall respectively, anti-sand sleeve Top is aligned with well seat top surface and lid top surface respectively, and supporting block is against between support plate and lid, and makes support plate and lid The setting of body interval, and sets of holes projection is located in support plate.

After lid is mounted on well seat, since anti-sand sleeve inner and outer wall is adjacent to lid outer wall and well seat inner wall respectively, Anti-sand sleeve top is aligned with well seat top surface and lid top surface respectively, therefore is avoided that between lid and well seat and is blocked by silt, is led It causes to open difficult, when disassembly, is fixed by extracting tool and removal hole cooperation, push support plate later, and move down anti-sand sleeve, And be connected to due to the support plate being connect with anti-sand sleeve on the baffle ring of well seat, during dismantling lid, without outside anti-sand sleeve Wall friction in wall and well seat, thus can more laborsaving disassembly lid, and support plate is circular ring shape plate structure, can be effectively reduced pair The influence of well lid.

In above-mentioned one kind municipal well lid easy to maintain, two removal holes are in symmetrical structure by axis of lid axis It is located on lid.

In above-mentioned one kind municipal well lid easy to maintain, the lid bottom surface is coaxially provided with one of annular mounting groove, peace Tankage slot bottom is parallel with lid bottom surface, and extends towards cover edge, and when supporting block is against on lid bottom surface, supporting block top It is against mounting groove slot bottom, supporting block side wall is against in installation groove groove wall.

Therefore lid can be installed using mounting groove and supporting block cooperation rapid alignment.

In above-mentioned one kind municipal well lid easy to maintain, the support column bottom end has external screw thread, and support column bottom end It is screwed on baffle ring top surface.

A kind of extracting tool for municipal well lid easy to maintain, including outer diameter round shell-like identical with sets of holes aperture are fixed Set is coaxially provided with internal thread hole in fixing sleeve, further include top be fixed with handwheel with externally threaded removal rod, the disassembly Bar is screwed on internal thread hole, and the fixing sleeve bottom end outer wall is fixed, and there are two fixed blocks, and fixing sleeve and fixed block are along solid Surely set axis projection is identical along sets of holes axis projection as sets of holes and fixation hole respectively, and outer wall has outer spiral shell in the middle part of the fixing sleeve Line further includes the interstage sleeve covered on fixing sleeve outer wall that is spirally connected.

This extracting tool protrudes into sets of holes and fixation hole in use, fixing sleeve and fixed block are respectively cooperating with, and rotates fixing sleeve, Rotation interstage sleeve is covered relative to fixed, interstage sleeve bottom end is adjacent to and is against on lid top surface, make fixed block cooperation embedded in the fixing groove It is interior, and keep extracting tool relatively fixed with lid, rotation hand wheel drives removal rod rotation later, makes under the relatively fixed set of removal rod It moves, and removal rod bottom end pushes the support plate, makes support plate that anti-sand sleeve be driven to move down, hold handwheel later and from well seat Dismantle lid, therefore mounting and dismounting tool is very convenient, and extracting tool after installing and removal hole fix it is sufficiently stable, simultaneously Removal hole is hardly damaged, and use occasion is wider, and pushes support plate jointly by two removal rod bottom ends, is avoided that support plate list The excessive stress of point causes disassembly difficult.

In a kind of above-mentioned extracting tool for municipal well lid easy to maintain, outer wall of the fixing sleeve close to top On be fixed with grip, fixing sleeve outer wall activity cooperation is cased with sliding sleeve, and the external screw thread is located on sliding sleeve outer wall, and interstage sleeve is spirally connected It covers on sliding sleeve outer wall, further includes covering on fixing sleeve, and the reset bullet that both ends offset with grip bottom end and sliding sleeve top respectively Spring, fixing sleeve outer wall are equipped with limiting slot, and limiting slot is equipped with several locating slots along the distribution of limiting slot length direction, described Sliding sleeve is equipped with jack, further includes the bolt being inserted on jack, bolt is fixedly arranged at the front end with the sliding block being slidably disposed on limiting slot, institute The reset spring stated pushes sliding sleeve top, is against interstage sleeve bottom end on lid top surface, and can push bolt rear end, is embedded in sliding block In arbitrary locating slot, and interstage sleeve is rotated relative to sliding sleeve, is adjacent to interstage sleeve bottom end and is against on lid top surface.

Therefore sliding sleeve and reset spring cooperation be can use quickly by fixed block in fixing groove, be later embedded in sliding block In locating slot, and interstage sleeve is rotated relative to sliding sleeve, be adjacent to interstage sleeve bottom end and be against on lid top surface, therefore energy fast and easy will be dismantled Tool is fixed with removal hole.

It further include the ring that activity is against interstage sleeve bottom in a kind of above-mentioned extracting tool for municipal well lid easy to maintain Shape slip ring, slip ring is interior along the connector sleeve being actively set on fixing sleeve outer wall is fixed with, and connector sleeve wall coaxial is equipped with annular groove, also Including the bolt being fixed on interstage sleeve, and bolt end is slidably disposed on annular groove, and slip ring can be made to be adjacent to by rotation interstage sleeve It is against on lid top surface.

Therefore the more laborsaving rotation interstage sleeve of energy, avoids interstage sleeve bottom end and the excessive friction of lid top surface.

In a kind of above-mentioned extracting tool for municipal well lid easy to maintain, the removal rod bottom end outer wall is fixed with Block.

Block plays position-limiting action to removal rod, and removal rod is avoided to separate with extracting tool.

In a kind of above-mentioned extracting tool for municipal well lid easy to maintain, the grip, which is spirally connected, to be covered on fixing sleeve top It holds on outer wall, the limiting slot top extends to fixing sleeve top.

Therefore extracting tool convenient for assembly.

A kind of assembly and disassembly methods of municipal well lid easy to maintain, it is characterised in that: including disassembly well lid method and installation well lid side Method,

Dismantle well lid method are as follows: fixing sleeve is held, fixing sleeve and fixed block are respectively cooperating with and protrude into sets of holes and fixation hole, under 90 ° of rotation fixing sleeves of fixing sleeve axis are pressed and surrounded, is cooperated using reset spring and sliding sleeve, interstage sleeve bottom end is made to be against lid top surface On, make fixed block cooperation in fixing groove, push bolt rear end, make sliding block in adjacent locating slot, opposite sliding sleeve revolves Turn interstage sleeve, be adjacent to interstage sleeve bottom end and be against on lid top surface, keep extracting tool relatively fixed with lid, similarly by two disassembly works Tool is separately fixed on two removal holes, and both hands rotate the handwheel of two extracting tools respectively and removal rod is driven to rotate, and make to tear open It unloads the relatively fixed set of bar to move down, removal rod bottom end pushes support plate, makes support plate that anti-sand sleeve be driven to move down, both hands hold two respectively The handwheel of a extracting tool simultaneously dismantles the lid from well seat；

Well lid method is installed are as follows: hold and move handwheel, lid is packed into well seat, rotation hand wheel drives removal rod rotation Turn, so that the block of removal rod bottom end is against fixing sleeve bottom end, move up anti-sand sleeve and be located between lid and well seat, post-tensioning bolt Rear end separates sliding block with locating slot, and is located on limiting slot, pushes and surround 90 ° of rotation fixing sleeves of fixing sleeve axis, makes solid Fixed set and fixed block are aligned with sets of holes and fixation hole respectively, hold and pull up fixing sleeve, and extracting tool is dismantled out of removal hole.

By the above method, i.e., lid is dismantled or installed using this extracting tool on well seat.

Compared with prior art, the utility model has the advantages that

1, sand-prevention structure is formed by anti-sand sleeve, it can more laborsaving disassembly lid；

It 2,, can more laborsaving disassembly lid without wall friction in anti-sand sleeve outer wall and well seat during dismantling lid；

3, support plate is circular ring shape plate structure, can effectively reduce the influence to well lid；

4, influenced by removal hole smaller, the service life is longer；

5, without passing through the mounting and dismounting tool that is spirally connected, more convenient dismounting.

Detailed description of the invention

Fig. 1 is that well lid and extracting tool cooperate cross-sectional view.

Fig. 2 is the partial enlarged view of Fig. 1.

Fig. 3 is the partial enlarged view of Fig. 2.

Fig. 4 and Fig. 5 is well seat top and bottom partial schematic diagram respectively.

Fig. 6 is well seat bottom surface partial schematic diagram after extracting tool is mounted on well seat.

In figure,

1, well seat；11, baffle ring；12, support column；13, supporting block；14, compressed spring；

2, support plate；21, anti-sand sleeve；

3, lid；31, removal hole；32, sets of holes；33, fixation hole；34, fixing groove；35, mounting groove；

4, fixing sleeve；41, internal thread hole；42, fixed block；43, grip；44, reset spring；45, limiting slot；46, it positions Slot；

5, removal rod；51, handwheel；52, block；

6, interstage sleeve；61, sliding sleeve；62, jack；63, bolt；64, sliding block；65, bolt；

7, slip ring；71, connector sleeve；72, annular groove.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in figures 1 to 6, a kind of municipal well lid easy to maintain of the utility model, including circular ring shape well seat 1 and be located in well seat 1 Circular plate lid 3,1 inner wall of well seat is equipped with annular baffle ring 11, and 11 top surface of baffle ring is lower than 1 top surface of well seat, and with 1 inner wall of well seat It vertically, further include several bottom ends support column 12 fixed with 11 top surface of baffle ring, 12 length direction of support column and 11 axis of baffle ring are flat Row, 12 top of support column are fixed with supporting block 13, and several supporting blocks 13 are identical as 11 axial line distance of baffle ring, and several supporting blocks 13 It is parallel with 11 top surface of baffle ring to surround the plane to be formed, further includes circular ring shape plate-like support plate 2, support plate 2 is equipped with several supports Hole, and several support columns 12 are threaded through respectively in several supported holes, 2 top surface outer of support plate is fixed with round shell-like anti-sand sleeve 21, Further include the compressed spring 14 covered on support column 12,14 both ends of compressed spring respectively with 2 bottom of 11 top surface of baffle ring and support plate Face offsets, and is set on lid 3 there are two the removal hole 31 for running through 3 top and bottom of lid, removal hole 31 includes circular hole sets of holes 32,32 axis of sets of holes is parallel with 3 axis of lid, and 32 two sides hole wall of sets of holes is equipped with the poroid fixation hole 33 of notch shape, and 3 bottom surface of lid is set It is located at the notch shape channel-shaped fixing groove 34 on 32 hole wall of sets of holes there are two cell wall, two fixation holes 33 are in using 32 axis of sets of holes as axis Centrosymmetric structure, two fixing grooves 34 are centrosymmetric structure using 32 axis of sets of holes as axis, and two fixation holes 33 are along sets of holes 32 axis projections are surrounded after 32 axis of sets of holes is rotated by 90 ° and are overlapped with two fixing grooves 34 along 32 axis projection of sets of holes；

Several supporting blocks 13 are withstood on respectively on 3 bottom surface of lid, and compressed spring 14 pushes 2 bottom surface of support plate, make anti-sand sleeve 21 Between lid 3 and well seat 1, and 21 inner and outer wall of anti-sand sleeve is adjacent to 3 outer wall of lid and 1 inner wall of well seat respectively, sand prevention It covers 21 tops to be aligned with 1 top surface of well seat and 3 top surface of lid respectively, and supporting block 13 is against between support plate 2 and lid 3, and is made Support plate 2 and the setting of the interval of lid 3, and the projection of sets of holes 32 is located in support plate 2.

Further, two removal holes 31 are located on lid 3 using 3 axis of lid as axis in symmetrical structure.3 bottom surface of lid is same Axis is equipped with one of annular mounting groove 35, and 35 slot bottom of mounting groove is parallel with 3 bottom surface of lid, and extends towards 3 edge of lid, and when branch When bracer 13 is against on 3 bottom surface of lid, 13 top of supporting block is against 35 slot bottom of mounting groove, and 13 side wall of supporting block is against mounting groove On 35 cell walls.12 bottom end of support column has external screw thread, and 12 bottom end of support column is screwed on 11 top surface of baffle ring.

After lid 3 is mounted on well seat 1, due to 21 inner and outer wall of anti-sand sleeve respectively with 1 inner wall of 3 outer wall of lid and well seat It is adjacent to, 21 top of anti-sand sleeve is aligned with 1 top surface of well seat and 3 top surface of lid respectively, therefore is avoided that quilt between lid 3 and well seat 1 Silt blocking, causes to open difficult, when disassembly, is fixed by extracting tool and the cooperation of removal hole 31, pushes support plate 2 later, And move down anti-sand sleeve 21, and since the support plate 2 connecting with anti-sand sleeve 21 is connected on the baffle ring 11 of well seat 1, it dismantles During lid 3, it is not necessarily to wall friction in 21 outer wall of anti-sand sleeve and well seat 1, therefore the more laborsaving disassembly lid 3 of energy, and support plate 2 be circular ring shape plate structure, can effectively reduce the influence to well lid.

A kind of extracting tool for municipal well lid easy to maintain, including outer diameter round shell-like identical with 32 aperture of sets of holes are fixed Set 4 is coaxially provided with internal thread hole 41 in fixing sleeve 4, further include top be fixed with handwheel 51 with externally threaded removal rod 5, tear open It unloads bar 5 to be screwed on internal thread hole 41,4 bottom end outer wall of fixing sleeve is fixed there are two fixed block 42, and fixing sleeve 4 and fixed block 42 It is identical along 32 axis projection of sets of holes as sets of holes 32 and fixation hole 33 respectively along 4 axis projection of fixing sleeve, 4 middle part outer wall of fixing sleeve It further include the interstage sleeve 6 covered on 4 outer wall of fixing sleeve that is spirally connected with external screw thread.

Further, fixing sleeve 4 is fixed with grip 43 on the outer wall on top, and 4 outer wall activity of fixing sleeve cooperation is cased with Sliding sleeve 61, external screw thread are located on 61 outer wall of sliding sleeve, and interstage sleeve 6 is spirally connected and covers on 61 outer wall of sliding sleeve, further includes covering in fixing sleeve 4 On, and the reset spring 44 that both ends offset with 43 bottom end of grip and 61 top of sliding sleeve respectively, 4 outer wall of fixing sleeve are equipped with limit Slot 45, limiting slot 45 are equipped with several locating slots 46 along the distribution of 45 length direction of limiting slot, and sliding sleeve 61 is equipped with jack 62, also Including the bolt 63 being inserted on jack 62, bolt 63 is fixedly arranged at the front end with the sliding block 64 being slidably disposed on limiting slot 45, reset spring 44 push 61 top of sliding sleeve, are against 6 bottom end of interstage sleeve on 3 top surface of lid, and can push 63 rear end of bolt, are embedded in sliding block 64 and appoint In the locating slot 46 of meaning, and interstage sleeve 6 is rotated relative to sliding sleeve 61, is adjacent to 6 bottom end of interstage sleeve and is against on 3 top surface of lid.It further include living The dynamic annular slip ring 7 for being against 6 bottom of interstage sleeve, slip ring 7 is interior along the connector sleeve 71 being actively set on 4 outer wall of fixing sleeve is fixed with, even 71 wall coaxial of female connector is equipped with annular groove 72, further includes the bolt 65 being fixed on interstage sleeve 6, and 65 end of bolt is slidably disposed in ring On shape slot 72, and slip ring 7 can be made to be adjacent to and be against on 3 top surface of lid by rotation interstage sleeve 6.5 bottom end outer wall of removal rod is fixed with Block 52.Grip 43, which is spirally connected, to be covered on 4 top outer wall of fixing sleeve, and 45 top of limiting slot extends to 4 top of fixing sleeve.

This extracting tool protrudes into sets of holes 32 and fixation hole 33 in use, fixing sleeve 4 and fixed block 42 are respectively cooperating with, rotation Fixing sleeve 4 is adjacent to 6 bottom end of interstage sleeve and is against on 3 top surface of lid, cooperate fixed block 42 embedding relative to fixed 4 rotation interstage sleeve 6 of set In fixing groove 34, and keep extracting tool and lid 2 relatively fixed, rotation hand wheel 51 drives removal rod 5 to rotate later, makes to tear open It unloads the relatively fixed set 4 of bar 5 to move down, and 5 bottom end of removal rod pushes support plate 2, makes support plate 2 that anti-sand sleeve 21 be driven to move down, later Hold handwheel 51 and dismantle lid 3 from well seat 1, therefore mounting and dismounting tool is very convenient, and the extracting tool after installing with The fixation of removal hole 31 is sufficiently stable, while removal hole 31 is hardly damaged, and use occasion is wider, and passes through two 5 bottom ends of removal rod It is common to push support plate 2, it is avoided that the excessive stress of 2 single-point of support plate, causes disassembly difficult.

A kind of assembly and disassembly methods of municipal well lid easy to maintain, including disassembly well lid method and installation well lid method,

Dismantle well lid method are as follows: hold fixing sleeve 4, fixing sleeve 4 and fixed block 42 are respectively cooperating with and protrudes into sets of holes 32 and consolidates Determine hole 33, pushes and surround 4 axis of fixing sleeve, 90 ° of rotation fixing sleeves 4, cooperated using reset spring 44 and sliding sleeve 61, make interstage sleeve 6 Bottom end is against on 3 top surface of lid, is made the cooperation of fixed block 42 in fixing groove 34, is pushed 63 rear end of bolt, be embedded in sliding block 64 In adjacent locating slot 46, interstage sleeve 6 is rotated relative to sliding sleeve 61,6 bottom end of interstage sleeve is adjacent to and is against on 3 top surface of lid, makes to dismantle work Tool is relatively fixed with lid 3, similarly two extracting tools is separately fixed on two removal holes 31, both hands rotate two respectively The handwheel 51 of a extracting tool simultaneously drives removal rod 5 to rotate, and moves down the relatively fixed set 4 of removal rod 5,5 bottom end of removal rod pushes Support plate 2 makes support plate 2 that anti-sand sleeve 21 be driven to move down, and both hands hold the handwheel 51 of two extracting tools and respectively from well seat 1 Upper disassembly lid 3；

Well lid method is installed are as follows: hold and move handwheel 51, lid 3 is packed into well seat 1, rotation hand wheel 51 drives Removal rod 5 rotates, and the block 52 of 5 bottom end of removal rod is made to be against 4 bottom end of fixing sleeve, moves up anti-sand sleeve 21 and is located at 3 He of lid Between well seat 1,63 rear end of post-tensioning bolt separates sliding block 64 with locating slot 46, and is located on limiting slot 45, pushes and surrounds 4 axis of fixing sleeve, 90 ° of rotation fixing sleeves 4, are aligned fixing sleeve 4 and fixed block 42 with sets of holes 32 and fixation hole 33 respectively, hold And fixing sleeve 4 is pulled up, and dismantle extracting tool out of removal hole 31.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Although well seat 1, baffle ring 11, support column 12, supporting block 13, compressed spring 14, support plate is used more herein 2, anti-sand sleeve 21, lid 3, removal hole 31, sets of holes 32, fixation hole 33, fixing groove 34, mounting groove 35, fixing sleeve 4, internal thread hole 41, fixed block 42, grip 43, reset spring 44, limiting slot 45, locating slot 46, removal rod 5, handwheel 51, block 52, interstage sleeve 6, The terms such as sliding sleeve 61, jack 62, bolt 63, sliding block 64, bolt 65, slip ring 7, connector sleeve 71, annular groove 72, but be not precluded A possibility that using other terms.The use of these items is only for be more convenient to describe and explain the sheet of the utility model Matter；It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.

Claims (9)

1. a kind of municipal well lid easy to maintain, including circular ring shape well seat (1) and the circular plate lid (3) being located in well seat (1), Be characterized in that: well seat (1) inner wall is equipped with annular baffle ring (11), and baffle ring (11) top surface is lower than well seat (1) top surface, and and well Seat (1) inner wall is vertical, further includes the support column (12) that several bottom ends and baffle ring (11) top surface are fixed, support column (12) length direction Parallel with baffle ring (11) axis, support column (12) top is fixed with supporting block (13), several supporting blocks (13) and baffle ring (11) axial line distance is identical, and to surround the plane to be formed parallel with baffle ring (11) top surface for several supporting blocks (13), further includes annulus Shape plate-like support plate (2), the support plate (2) is equipped with several supported holes, and several support columns (12) are worn respectively It is located in several supported holes, the support plate (2) top surface outer is fixed with round shell-like anti-sand sleeve (21), further includes covering supporting Compressed spring (14) on column (12), compressed spring (14) both ends offset with baffle ring (11) top surface and support plate (2) bottom surface respectively, It is set on the lid (3) there are two the removal hole (31) for running through lid (3) top and bottom, removal hole (31) includes circular hole Sets of holes (32), sets of holes (32) axis is parallel with lid (3) axis, and sets of holes (32) two sides hole wall is equipped with the poroid fixation hole of notch shape (33), lid (3) bottom surface sets the notch shape channel-shaped fixing groove (34) being located on sets of holes (32) hole wall there are two cell wall, two fixations Hole (33) is centrosymmetric structure using sets of holes (32) axis as axis, and it is in center that two fixing grooves (34), which are axis using sets of holes (32) axis, Symmetrical structure, and two fixation holes (33) surround after sets of holes (32) axis is rotated by 90 ° along sets of holes (32) axis projection and two are solid Determine slot (34) to be overlapped along sets of holes (32) axis projection；

Several supporting blocks (13) are withstood on respectively on lid (3) bottom surface, and the compressed spring (14) pushes support plate (2) Bottom surface is located at anti-sand sleeve (21) between lid (3) and well seat (1), and anti-sand sleeve (21) inner and outer wall respectively with lid (3) Outer wall and well seat (1) inner wall are adjacent to, and anti-sand sleeve (21) top is aligned with well seat (1) top surface and lid (3) top surface respectively, and are supported Block (13) is against between support plate (2) and lid (3), and so that support plate (2) and lid (3) is spaced setting, and sets of holes (32) are thrown Shadow is located on support plate (2).

2. one kind according to claim 1 municipal well lid easy to maintain, it is characterised in that: two removal holes (31) with Lid (3) axis is that axis is located on lid (3) in symmetrical structure.

3. one kind according to claim 2 municipal well lid easy to maintain, it is characterised in that: described lid (3) bottom surface is coaxial Equipped with one of annular mounting groove (35), mounting groove (35) slot bottom is parallel with lid (3) bottom surface, and extends towards lid (3) edge, and When supporting block (13) is against on lid (3) bottom surface, supporting block (13) top is against mounting groove (35) slot bottom, supporting block (13) side Wall is against on mounting groove (35) cell wall.

4. one kind according to claim 3 municipal well lid easy to maintain, it is characterised in that: support column (12) the bottom end tool There is external screw thread, and support column (12) bottom end is screwed on baffle ring (11) top surface.

5. a kind of extracting tool for municipal well lid easy to maintain as claimed in claim 4, it is characterised in that: including outer diameter and set The identical round shell-like fixing sleeve (4) in hole (32) aperture, fixing sleeve (4) is interior to be coaxially provided with internal thread hole (41), further includes that top is solid Surely have handwheel (51) with externally threaded removal rod (5), the removal rod (5) is screwed on internal thread hole (41), described Fixing sleeve (4) bottom end outer wall is fixed, and there are two fixed block (42), and fixing sleeve (4) and fixed block (42) are axial along fixing sleeve (4) Project outer wall in the middle part of fixing sleeve (4) identical along sets of holes (32) axis projection as sets of holes (32) and fixation hole (33) respectively, described It further include the interstage sleeve (6) covered on fixing sleeve (4) outer wall that is spirally connected with external screw thread.

6. the extracting tool of one kind according to claim 5 municipal well lid easy to maintain, it is characterised in that: the fixing sleeve (4) it is fixed with grip (43) on the outer wall on top, fixing sleeve (4) outer wall activity cooperation is cased with sliding sleeve (61), and described is outer Screw thread is located on sliding sleeve (61) outer wall, and interstage sleeve (6) is spirally connected and covers on sliding sleeve (61) outer wall, further includes covering on fixing sleeve (4), And the reset spring (44) that both ends offset with grip (43) bottom end and sliding sleeve (61) top respectively, fixing sleeve (4) outer wall are equipped with Limiting slot (45), limiting slot (45) are equipped with several locating slots (46) along the distribution of limiting slot (45) length direction, the cunning It covers (61) and is equipped with jack (62), further include the bolt (63) being inserted on jack (62), bolt (63) is fixedly arranged at the front end with sliding position In the sliding block (64) on limiting slot (45), the reset spring (44) pushes sliding sleeve (61) top, is against interstage sleeve (6) bottom end On lid (3) top surface, and bolt (63) rear end can be pushed, make sliding block (64) in arbitrary locating slot (46), and is relatively sliding (61) rotation interstage sleeve (6) is covered, interstage sleeve (6) bottom end is adjacent to and is against on lid (3) top surface.

7. the extracting tool of one kind according to claim 6 municipal well lid easy to maintain, it is characterised in that: further include that activity is supported Annular slip ring (7) in interstage sleeve (6) bottom, the interior edge of slip ring (7) are fixed with the connector sleeve being actively set on fixing sleeve (4) outer wall (71), connector sleeve (71) wall coaxial is equipped with annular groove (72), further includes the bolt (65) being fixed on interstage sleeve (6), and bolt (65) end is slidably disposed on annular groove (72), and slip ring (7) can be made to be adjacent to and be against lid (3) top surface by rotation interstage sleeve (6) On.

8. the extracting tool of one kind according to claim 7 municipal well lid easy to maintain, it is characterised in that: the removal rod (5) bottom end outer wall is fixed with block (52).

9. the extracting tool of one kind according to claim 8 municipal well lid easy to maintain, it is characterised in that: the grip (43) it is spirally connected and covers on the outer wall of fixing sleeve (4) top, the limiting slot (45) top extends to fixing sleeve (4) top.