CN108385730A - A kind of inner locking type municipal administration well lid and extracting tool and assembly and disassembly methods - Google Patents

Abstract

The present invention provides a kind of inner locking type municipal administration well lid and extracting tools and assembly and disassembly methods, belong to municipal works apparatus field.It solves the problems, such as that existing well lid dismounting is difficult.This inner locking type municipal administration well lid, including well seat and lid, well seat inner wall is equipped with baffle ring, well seat inner wall is equipped with annular lock groove, removal hole there are two being set on lid, removal hole includes sets of holes, sets of holes side hole wall is equipped with the poroid mounting hole of notch shape, lid bottom surface is equipped with fixing groove, fixing groove is embedded with closing piece, closing piece outer wall is equipped with bar slot, bar groove groove wall is equipped with limiting slot one, lockhole is equipped in lid, lockhole axis is radially arranged along lid radial direction and fixing groove, and it is fixed groove groove wall and lid outer wall the shortest route, activity is equipped with locking bar in lockhole, locking bar inner end is located on bar slot, and it is fixed with the limited block being slidably disposed on limiting slot one, further include being located in fixing groove, and the return spring that both ends offset with fixing groove top and closing piece top respectively.This well lid can improve anti-theft and reduce dismounting difficulty.

Description

A kind of inner locking type municipal administration well lid and extracting tool and assembly and disassembly methods

Technical field

The invention belongs to municipal works equipment technical field, it is related to a kind of inner locking type municipal administration well lid and extracting tool and dismounting Method.

Background technology

Existing well lid generally utilizes extracting tool pull-up opening, and dismounting difficulty is low, causes anti-theft performance poor, is easily sent out after being stolen Raw safety accident.

It is existing application No. is 201610893655.5, the Chinese invention of entitled " a kind of antitheft municipal well lid detaching structure " Patent coordinates fixed lid, dismounting in lid bottom by axis pin junction steel plate using the card slot of steel plate and well seat inner wall When, removal rod is screwed onto on removal hole, and removal rod is made to push cover board, steel plate is made to be rotated around axis pin, and and exact separation, To dismantle lid；But it has the following problems：

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

2, due to needing the cooperation of more removal rods, it is therefore desirable to be spirally connected fixed removal rod by root, disassembly process is cumbersome；

3, lid be mounted on well seat on after can not location and installation lid, cause card slot that can not coordinate successively with steel plate, therefore It needs to be directed at card slot and steel plate, installation is caused to bother；It is therefore desirable to be improved.

Invention content

The purpose of the present invention is being directed to the above-mentioned problems in the prior art, it is more preferable to provide a kind of anti-theft, uses Occasion is wider, and dismounts more convenient inner locking type municipal administration well lid and extracting tool and assembly and disassembly methods.

Object of the invention can be realized by the following technical scheme：A kind of inner locking type municipal administration well lid, including circular ring 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, and baffle ring top surface is low In well seat top surface, and it is vertical with well seat inner wall, and the well seat inner wall is coaxially provided with one of annular lock groove, is set on the lid There are two the removal holes for running through lid top and bottom, and removal hole includes circular hole sets of holes, and set axially bored line is parallel with lid axis, Sets of holes side hole wall is equipped with the poroid mounting hole of notch shape, and there is mounting hole the both sides hole wall being mutually parallel, lid bottom surface to be equipped with circle Channel-shaped fixing groove, fixing groove axis is parallel with set axially bored line, and fixing groove slot diameter is identical as mounting hole both sides hole wall spacing, described Fixing groove in activity cooperation embedded with cylindrical closing piece, the closing piece outer wall is equipped with one of bar slot, and bar groove groove wall is equipped with limit Slot one, one length direction of limiting slot are arranged with closing piece axis in angle, and fixing groove is located at equipped with both ends in the lid The rod-shaped lockhole of cell wall and lid outer wall, lockhole axis is radial and fixing groove is radially arranged along lid, and for fixed groove groove wall with Lid outer wall the shortest route, in the lockhole activity be equipped with locking bar, locking bar inner end is located on bar slot, and is fixed with sliding position Limited block on limiting slot one further includes being located in fixing groove, and both ends offset with fixing groove top and closing piece top respectively Return spring；

The lid cooperation is placed in well seat, and lid outer wall is bonded with well seat inner wall, lid top surface and well seat top surface pair Together, lid bottom surface is against on baffle ring top surface, and removal hole and fixing groove projection are shifted to install with baffle ring, and the return spring pushes away Dynamic closing piece makes limited block be located at one top of limiting slot, and lid outer wall is stretched out in locking bar outer end, and in locked groove, and can go up pressure Closing piece bottom end makes limited block slide into one bottom end of limiting slot, and locking bar outer end is made to be detached with locked groove, and in lockhole.

After lid is mounted on well seat, coordinated using locking bar and locked groove, opposite can lock lid and well seat, and due to locked groove For positioned at the loop configuration of well seat inner wall, there is no need to location and installation lids so that it is easier for installation, when dismounting, by tearing open It unloads tool to fix with removal hole, and upper pressure closing piece, so that locking bar outer end is detached i.e. detachable lid with locked groove, due to closing piece and fixation Slot is located at below lid, is avoided that the structure after being used for a long time in closing piece by corrosion and damage.

In a kind of above-mentioned inner locking type municipal administration well lid, the sets of holes hole wall is respectively provided with three mounting holes, and fixed Slot and three mounting holes are in that 90 ° of angles are circumferentially distributed along sets of holes successively.

In a kind of above-mentioned inner locking type municipal administration well lid, described two removal holes are in symmetrical structure by axis of lid axis It is located on lid.

Therefore facilitate and dismount lid using extracting tool.

In a kind of above-mentioned inner locking type municipal administration well lid, the fixing groove notch has fillet or chamfering, and when limit When block is located at one top of limiting slot, the closing piece bottom end is higher than fixing groove notch height.

It therefore can Fast Installation extracting tool.

A kind of extracting tool for inner locking type municipal administration well lid, it is characterised in that：It is identical with sets of holes aperture including bar diameter The round bar shape fixed link parallel with dismounting rod axis that round bar shape removal rod further includes axis, the bending of fixed link bottom end and with dismounting Bar bottom end is fixed, and the fixed link bar diameter is identical as fixing groove slot diameter, and outer wall has external screw thread in the middle part of the removal rod, also Including the interstage sleeve being sleeved on removal rod outer wall that is spirally connected；

And removal rod top can be held, and removal rod and fixed link are respectively cooperating with and stretch into sets of holes and mounting hole, and can enclose Removal rod is rotated around dismounting rod axis, and pulls up removal rod, makes fixed link cooperation in the fixing groove, and fixed link top Closing piece is pressed on end, so that limited block is slid into one bottom end of limiting slot, locking bar outer end is made to be detached with locked groove, and in lockhole, and energy Interstage sleeve is rotated relative to removal rod, so that interstage sleeve bottom end is adjacent to and is against on lid top surface, and extracting tool is made to be relatively fixed with lid, and Removal rod top can be held and dismantle the lid from well seat.

This extracting tool stretches into sets of holes and mounting hole in use, removal rod and fixed link are respectively cooperating with, and rotation pull-up is torn open Bar is unloaded, fixed link is made to be embedded in fixing groove, interstage sleeve is rotated relative to removal rod, so that interstage sleeve bottom end is adjacent to and be against on lid top surface, make to tear open It unloads tool to be relatively fixed with lid, presses closing piece on fixed link top at this time, locking bar outer end is made to be detached with locked groove, hold dismounting later Lid is simultaneously dismantled in bar top from well seat, therefore mounting and dismounting tool is very convenient, and extracting tool and removal hole after installation Fixation is sufficiently stable, while removal hole is hardly damaged, and use occasion is wider.

In a kind of above-mentioned extracting tool for inner locking type municipal administration well lid, outer wall of the removal rod close to top On be fixed with grip, the grip top is vertically connected with handle.

Therefore facilitate and dismantle lid using handle.

In a kind of above-mentioned extracting tool for inner locking type municipal administration well lid, the removal rod outer wall activity engagement sleeves There are sliding sleeve, the external screw thread to be located on sliding sleeve outer wall, and interstage sleeve is spirally connected and is sleeved on sliding sleeve outer wall, further includes being sleeved on removal rod On, and the resetting spring that both ends offset with grip bottom end and sliding sleeve top respectively, removal rod outer wall are equipped with limiting slot two, limit Slot two is equipped with several locating slots along the distribution of two length direction of limiting slot, and the sliding sleeve is equipped with jack, further includes being inserted in Bolt on jack, bolt are fixedly arranged at the front end with the sliding block being slidably disposed on limiting slot two, and the resetting spring pushes sliding sleeve top End, makes interstage sleeve bottom end be against on lid top surface, and can push bolt rear end, makes sliding block in arbitrary locating slot, and opposite Sliding sleeve rotates interstage sleeve, so that interstage sleeve bottom end is adjacent to and is against on lid top surface.

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

Further include the ring that activity is against interstage sleeve bottom in a kind of above-mentioned extracting tool for inner locking type municipal administration well lid Shape slip ring, slip ring is interior along the connector sleeve being actively set on removal rod 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 rotating 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.

Further include penetrating wearing for removal rod bottom end in a kind of above-mentioned extracting tool for inner locking type municipal administration well lid Respectively with fixed link bottom end and bar bottom end connecting rod connected vertically, two top of limiting slot extends for bar and both ends To removal rod top.

Therefore easy to assembly.

A kind of assembly and disassembly methods of inner locking type municipal administration well lid, it is characterised in that：Including dismounting well lid method and installation well lid side Method,

Dismantling well lid method is：Removal rod and fixed link are respectively cooperating with and stretch into sets of holes by the handle for holding removal rod top And mounting hole, it pushes and rotates removal rod around dismounting rod axis, make fixed link cooperation in fixing groove, on fixed link top Closing piece is pressed, so that limited block is slid into one bottom end of limiting slot, locking bar outer end is made to be detached with locked groove, and in lockhole, pushes bolt Rear end makes sliding block in adjacent locating slot, rotates interstage sleeve relative to removal rod, so that interstage sleeve bottom end is adjacent to and be against lid top surface On, so that extracting tool is relatively fixed with lid, similarly two extracting tools are separately fixed on two removal holes, both hands difference It holds removal rod top and dismantles the lid from well seat；

Installing well lid method is：Post-tensioning bolt rear end, makes sliding block be detached with locating slot, and on limiting slot two, pushes And removal rod is rotated around removal rod, so that removal rod and fixed link is aligned respectively with sets of holes and mounting hole, holds and pull up dismounting Bar, and extracting tool is dismantled out of removal hole.

Pass through the above method, you can lid is dismantled or installed using this extracting tool on well seat.

Compared with prior art, the invention has the advantages that：

1, lid can be locked using locking bar and locked groove cooperation, anti-theft effect is more preferable, and since locked groove is loop configuration, Without location and installation lid；

2, without by the mounting and dismounting tool that is spirally connected, more convenient dismounting, while being influenced by removal hole smaller, use the longevity It orders longer；

3, closing piece and fixing groove are located at below lid, are avoided that the structure after being used for a long time in closing piece by corrosion and damage.

Description of the drawings

Fig. 1 is well lid and extracting tool cooperation front view and partial sectional view.

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

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

Fig. 4 is lid partial bottom view.

Fig. 5 is the partial bottom view after lid mounting and dismounting tool.

In figure,

1, well seat；11, baffle ring；12, locked groove；

2, lid；21, removal hole；22, sets of holes；23, mounting hole；24, fixing groove；25, lockhole；26, return spring；

3, closing piece；31, bar slot；32, limiting slot one；

4, locking bar；41, limited block；

5, removal rod；51, fixed link；52, resetting spring；53, limiting slot two；54, locating slot；

6, grip；61, handle；

7, interstage sleeve；71, sliding sleeve；72, jack；73, bolt；74, sliding block；75, bolt；

8, slip ring；81, connector sleeve；82, annular groove.

Specific implementation mode

Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described, However, the present invention is not limited to these examples.

As shown in Figs. 1-5, a kind of inner locking type municipal administration well lid of the present invention, including circular ring shape well seats 1 and the circle that is located in well seat 1 Shape plate-like lid body 2,1 inner wall of well seat are equipped with annular baffle ring 11, and 11 top surface of baffle ring is less than 1 top surface of well seat, and hangs down with 1 inner wall of well seat Directly, 1 inner wall of well seat is coaxially provided with one of annular lock groove 12, set on lid 2 there are two run through 2 top and bottom of lid removal hole 21, removal hole 21 includes circular hole sets of holes 22, and 22 axis of sets of holes is parallel with 2 axis of lid, and 22 side hole wall of sets of holes is equipped with notch There is the both sides hole wall being mutually parallel, 2 bottom surface of lid to be equipped with circular groove shape fixing groove 24 for the poroid mounting hole 23 of shape, mounting hole 23, Gu It is parallel with 22 axis of sets of holes to determine 24 axis of slot, and 24 slot diameter of fixing groove is identical as 23 both sides hole wall spacing of mounting hole, fixing groove 24 Embedded with cylindrical closing piece 3,3 outer wall of closing piece is equipped with one of bar slot 31 for interior activity cooperation, and 31 cell wall of bar slot is equipped with limiting slot 1, limit Position one 32 length direction of slot is arranged with 3 axis of closing piece in angle, and 24 cell wall of fixing groove and lid are located at equipped with both ends in lid 2 The rod-shaped lockhole 25 of 2 outer wall of body, 25 axis of lockhole are 24 cell wall of fixing groove along 2 radial direction of lid and the radial setting of fixing groove 24 With 2 outer wall the shortest route of lid, in lockhole 25 activity be equipped with locking bar 4,4 inner end of locking bar is located on bar slot 31, and is fixed with cunning The dynamic limited block 41 on limiting slot 1, further include be located in fixing groove 24, and both ends respectively with 24 top of fixing groove and The return spring 26 that 3 top of closing piece offsets；

The cooperation of lid 2 is placed in well seat 1, and 2 outer wall of lid is bonded with 1 inner wall of well seat, 2 top surface of lid and 1 top surface pair of well seat Together, 2 bottom surface of lid is against on 11 top surface of baffle ring, and removal hole 21 and the projection of fixing groove 24 are shifted to install with baffle ring 11, return bullet Spring 26 pushes closing piece 3, so that limited block 41 is located at one 32 top of limiting slot, and 2 outer wall of lid is stretched out in 4 outer end of locking bar, and embedded in lock In slot 12, and 3 bottom end of pressure closing piece can be gone up, so that limited block 41 is slid into one 32 bottom end of limiting slot, and make 4 outer end of locking bar and locked groove 12 Separation, and in lockhole 25.

Further, 22 hole wall of sets of holes is respectively provided with three mounting holes 23, and fixing groove 24 and three mounting holes 23 are successively It is circumferentially distributed along sets of holes 22 in 90 ° of angles.Two removal holes 21 are located in symmetrical structure on lid 2 using 2 axis of lid as axis.Gu Determining 24 notch of slot has fillet or chamfering, and when limited block 41 is located at one 32 top of limiting slot, and 3 bottom end of closing piece is higher than fixing groove 24 notch height.

After lid 2 is mounted on well seat 1, coordinated using locking bar 4 and locked groove 12, opposite can lock lid 2 and well seat 1, and Since locked groove 12 is the loop configuration positioned at 1 inner wall of well seat, there is no need to location and installation lids 2 so that and it is easier for installation, it tears open When unloading, is fixed by extracting tool and removal hole 21, and upper pressure closing piece 3,4 outer end of locking bar is made to detach i.e. detachable cover with locked groove 12 Body 2 is avoided that the structure after being used for a long time in closing piece 3 by corrosion and damage since closing piece 3 and fixing groove 24 are located at 2 lower section of lid.

A kind of extracting tool for inner locking type municipal administration well lid, including the round bar shape dismounting identical with 22 aperture of sets of holes of bar diameter Bar 5, further includes the axis round bar shape fixed link 51 parallel with 5 axis of removal rod, the bending of 51 bottom end of fixed link and with 5 bottom of removal rod End is fixed, and 51 bar diameter of fixed link is identical as 24 slot diameter of fixing groove, and 5 middle part outer wall of removal rod has external screw thread, further includes the set that is spirally connected Interstage sleeve 7 on 5 outer wall of removal rod；

And 5 top of removal rod can be held, and removal rod 5 and fixed link 51 are respectively cooperating with and stretch into sets of holes 22 and mounting hole 23, and 5 axis of removal rod can be surrounded and rotate removal rod 5, and removal rod 5 is pulled up, make the cooperation of fixed link 51 in fixing groove 24, And closing piece 3 is pressed on 51 top of fixed link, so that limited block 41 is slid into one 32 bottom end of limiting slot, 4 outer end of locking bar is made to divide with locked groove 12 From, and in lockhole 25, and interstage sleeve 7 can be rotated relative to removal rod 5, so that 7 bottom end of interstage sleeve is adjacent to and is against on 2 top surface of lid, and So that extracting tool is relatively fixed with lid 2, and 5 top of removal rod can be held and dismantle lid 2 from well seat 1.

Further, removal rod 5 is fixed with grip 6 on the outer wall on top, and 6 top of grip is vertically connected with handle 61.5 outer wall activity of removal rod cooperation is cased with sliding sleeve 71, and external screw thread is located on 71 outer wall of sliding sleeve, and interstage sleeve 7 is spirally connected and is sleeved on sliding sleeve 71 Further include being sleeved on removal rod 5 on outer wall, and the resetting spring 52 that both ends offset with 6 bottom end of grip and 71 top of sliding sleeve respectively, 5 outer wall of removal rod is equipped with limiting slot 2 53, and limiting slot 2 53 is determined equipped with several along the distribution of 2 53 length direction of limiting slot Position slot 54, sliding sleeve 71 are equipped with jack 72, further include the bolt 73 being inserted on jack 72, bolt 73, which is fixedly arranged at the front end with, to be slidably disposed in Sliding block 74 on limiting slot 2 53, resetting spring 52 push 71 top of sliding sleeve, so that 7 bottom end of interstage sleeve is against on 2 top surface of lid, and energy 73 rear end of bolt is pushed, makes sliding block 74 in arbitrary locating slot 54, and interstage sleeve 7 is rotated relative to sliding sleeve 71, makes 7 bottom end of interstage sleeve It is adjacent to and is against on 2 top surface of lid.Further include the annular slip ring 8 that activity is against 7 bottom of interstage sleeve, the interior edge of slip ring 8 is fixed with movable sleeve Connector sleeve 81 on 5 outer wall of removal rod, 81 wall coaxial of connector sleeve are equipped with annular groove 82, further include being fixed on interstage sleeve 7 Bolt 75, and 75 end of bolt is slidably disposed on annular groove 82, and slip ring 8 can be made to be adjacent to and be against lid 2 by rotating interstage sleeve 7 On top surface.Further include penetrate 5 bottom end of removal rod bar and both ends respectively with 51 bottom end of fixed link and bar bottom end is vertical connects The connecting rod connect, 2 53 top of limiting slot extend to 5 top of removal rod.

This extracting tool stretches into sets of holes 22 and mounting hole 23 in use, removal rod 5 and fixed link 51 are respectively cooperating with, rotation Removal rod 5 is pulled up, fixed link 51 is made to be embedded in fixing groove 24, interstage sleeve 7 is rotated relative to removal rod 5, so that 7 bottom end of interstage sleeve is adjacent to and be against lid On 2 top surface of body, extracting tool is made to be relatively fixed with lid 2, press closing piece 3 on 51 top of fixed link at this time, makes 4 outer end of locking bar and lock Slot 12 detaches, and holds 5 top of removal rod later and dismantles lid 2 from well seat 1, therefore mounting and dismounting tool is very convenient, and Extracting tool after installation is fixed sufficiently stable with removal hole 21, while removal hole 21 is hardly damaged, and use occasion is wider.

A kind of assembly and disassembly methods of inner locking type municipal administration well lid, including dismounting well lid method and installation well lid method,

Dismantling well lid method is：The handle 61 for holding 5 top of removal rod, removal rod 5 and fixed link 51 are respectively cooperating with and are stretched Enter sets of holes 22 and mounting hole 23, push and rotate removal rod 5 around 5 axis of removal rod, the cooperation of fixed link 51 is made to be embedded in fixing groove In 24, closing piece 3 is pressed on 51 top of fixed link, so that limited block 41 is slid into one 32 bottom end of limiting slot, makes 4 outer end of locking bar and locked groove 12 Separation, and in lockhole 25,73 rear end of bolt is pushed, make sliding block 74 in adjacent locating slot 54, opposite removal rod 5 revolves Turn interstage sleeve 7, so that 7 bottom end of interstage sleeve is adjacent to and be against on 2 top surface of lid, so that extracting tool is relatively fixed with lid 2, similarly tear two open The tool of unloading is separately fixed on two removal holes 21, and both hands hold 5 top of removal rod and dismantle lid 2 from well seat 1 respectively；

Installing well lid method is：73 rear end of post-tensioning bolt, makes sliding block 74 be detached with locating slot 54, and is located at limiting slot 2 53 On, it pushes and rotates removal rod 5 around removal rod 5, keep removal rod 5 and fixed link 51 right with sets of holes 22 and mounting hole 23 respectively Together, removal rod 5 is held and pulled up, and dismantles extracting tool out of removal hole 21.

Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Although well seat 1, baffle ring 11, locked groove 12, lid 2, removal hole 21, sets of holes 22, mounting hole is used more herein 23, fixing groove 24, lockhole 25, return spring 26, closing piece 3, bar slot 31, limiting slot 1, locking bar 4, limited block 41, removal rod 5, Fixed link 51, resetting spring 52, limiting slot 2 53, locating slot 54, grip 6, handle 61, interstage sleeve 7, sliding sleeve 71, jack 72, bolt 73, the terms such as sliding block 74, bolt 75, slip ring 8, connector sleeve 81, annular groove 82, but the possibility using other terms is not precluded Property.The use of these items is only for more easily describe and explain the essence of the present invention；It is construed as any type Additional limitation is all disagreed with spirit of that invention.

Claims (10)

1. a kind of inner locking type municipal administration well lid, including circular ring shape well seat (1) and the circular plate lid (2) that is located in well seat (1), It is characterized in that：Described well seat (1) inner wall is equipped with annular baffle ring (11), and baffle ring (11) top surface is less than well seat (1) top surface, and and well Seat (1) inner wall is vertical, and described well seat (1) inner wall is coaxially provided with one of annular lock groove (12), and the lid (2) is equipped with two A removal hole (21) through lid (2) top and bottom, removal hole (21) include circular hole sets of holes (22), sets of holes (22) axis Parallel with lid (2) axis, sets of holes (22) side hole wall is equipped with the poroid mounting hole of notch shape (23), and mounting hole (23) has mutual Parallel both sides hole wall, lid (2) bottom surface are equipped with circular groove shape fixing groove (24), and fixing groove (24) axis is flat with sets of holes (22) axis Row, and fixing groove (24) slot diameter is identical as mounting hole (23) both sides hole wall spacing, activity cooperation is embedding in the fixing groove (24) There are cylindrical closing piece (3), the closing piece (3) outer wall to be equipped with one of bar slot (31), bar slot (31) cell wall is equipped with limiting slot one (32), limiting slot one (32) length direction is arranged with closing piece (3) axis in angle, and both ends are equipped in the lid (2) and are distinguished Positioned at the rod-shaped lockhole (25) of fixing groove (24) cell wall and lid (2) outer wall, lockhole (25) axis is radial and fixed along lid (2) Slot (24) is radially arranged, and is fixing groove (24) cell wall and lid (2) outer wall the shortest route, and the lockhole (25) interior activity is worn Equipped with locking bar (4), locking bar (4) inner end is located on bar slot (31), and is fixed with the limited block being slidably disposed on limiting slot one (32) (41), further include being located in fixing groove (24), and the return that both ends offset with fixing groove (24) top and closing piece (3) top respectively Spring (26)；

Described lid (2) cooperation is placed in well seat (1), and lid (2) outer wall is bonded with well seat (1) inner wall, lid (2) top surface and Well seat (1) top surface is aligned, and lid (2) bottom surface is against on baffle ring (11) top surface, and removal hole (21) and fixing groove (24) project and Baffle ring (11) shifts to install, and the return spring (26) pushes closing piece (3), and limited block (41) is made to be located at limiting slot one (32) top End, and lid (2) outer wall is stretched out in locking bar (4) outer end, and in locked groove (12), and pressure closing piece (3) bottom end can be gone up, make limited block (41) limiting slot one (32) bottom end is slid into, and locking bar (4) outer end is made to be detached with locked groove (12), and in lockhole (25).

2. a kind of inner locking type municipal administration well lid according to claim 1, it is characterised in that：Sets of holes (22) hole wall difference There are three mounting holes (23) for tool, and fixing groove (24) and three mounting holes (23) are in that 90 ° of angles circumferentially divide along sets of holes (22) successively Cloth.

3. a kind of inner locking type municipal administration well lid according to claim 2, it is characterised in that：Two removal holes (21) with Lid (2) axis is that axis is located in symmetrical structure on lid (2).

4. a kind of inner locking type municipal administration well lid according to claim 3, it is characterised in that：Fixing groove (24) notch tool There are fillet or chamfering, and when limited block (41) is located at limiting slot one (32) top, the closing piece (3) bottom end is higher than fixing groove (24) notch height.

5. a kind of extracting tool for the inner locking type municipal administration well lid described in claim 4, it is characterised in that：Including bar diameter and set The identical round bar shape removal rod (5) in hole (22) aperture further includes the axis round bar shape fixed link parallel with removal rod (5) axis (51), fixed link (51) bottom end bends and is fixed with removal rod (5) bottom end, the fixed link (51) bar diameter and fixing groove (24) Slot diameter is identical, and outer wall has external screw thread in the middle part of the removal rod (5), further includes the gear being sleeved on removal rod (5) outer wall that is spirally connected It covers (7)；

And removal rod (5) top can be held, and removal rod (5) and fixed link (51) are respectively cooperating with and stretches into sets of holes (22) and fixes Hole (23), and removal rod (5) axis rotation removal rod (5) can be surrounded, and removal rod (5) is pulled up, keep fixed link (51) cooperation embedding In the fixing groove (24), and closing piece (3) is pressed on fixed link (51) top, limited block (41) is made to slide into limiting slot one (32) bottom end makes locking bar (4) outer end be detached with locked groove (12), and in lockhole (25), and can rotate and keep off relative to removal rod (5) It covers (7), so that interstage sleeve (7) bottom end is adjacent to and be against on lid (2) top surface, and extracting tool is made to be relatively fixed with lid (2), and can hold Firmly removal rod (5) top and the lid (2) is dismantled from well seat (1).

6. a kind of extracting tool for inner locking type municipal administration well lid according to claim 5, it is characterised in that：Described tears open It unloads bar (5) and is fixed with grip (6) on the outer wall on top, the grip (6) top is vertically connected with handle (61).

7. a kind of extracting tool for inner locking type municipal administration well lid according to claim 6, it is characterised in that：Described tears open It unloads bar (5) outer wall activity cooperation and is cased with sliding sleeve (71), the external screw thread is located on sliding sleeve (71) outer wall, and interstage sleeve (7) is spirally connected It is sleeved on sliding sleeve (71) outer wall, further includes being sleeved on removal rod (5), and both ends are pushed up with grip (6) bottom end and sliding sleeve (71) respectively The resetting spring (52) to offset, removal rod (5) outer wall is held to be equipped with limiting slot two (53), limiting slot two (53) is equipped with several edges The locating slot (54) of limiting slot two (53) length direction distribution, the sliding sleeve (71) are equipped with jack (72), further include being inserted in Bolt (73) on jack (72), bolt (73) is fixedly arranged at the front end with the sliding block (74) being slidably disposed on limiting slot two (53), described Resetting spring (52) push sliding sleeve (71) top, so that interstage sleeve (7) bottom end is against on lid (2) top surface, and bolt can be pushed (73) rear end makes sliding block (74) in arbitrary locating slot (54), and relative to sliding sleeve (71) rotation interstage sleeve (7), makes interstage sleeve (7) Bottom end, which is adjacent to, to be against on lid (2) top surface.

8. a kind of extracting tool for inner locking type municipal administration well lid according to claim 7, it is characterised in that：Further include living The dynamic annular slip ring (8) for being against interstage sleeve (7) bottom, the interior edge of slip ring (8) are fixed with the connection being actively set on removal rod (5) outer wall It covers (81), connector sleeve (81) wall coaxial is equipped with annular groove (82), further includes the bolt (75) being fixed on interstage sleeve (7), and spiral shell Bolt (75) end is slidably disposed on annular groove (82), and slip ring (8) can be made to be adjacent to and be against lid (2) top by rotating interstage sleeve (7) On face.

9. a kind of extracting tool for inner locking type municipal administration well lid according to claim 8, it is characterised in that：Further include wearing Enter removal rod (5) bottom end bar and both ends respectively with fixed link (51) bottom end and bar bottom end connecting rod connected vertically, Described limiting slot two (53) top extends to removal rod (5) top.

10. a kind of assembly and disassembly methods of the inner locking type municipal administration well lid described in claim 4, it is characterised in that：Including dismantling well lid side Method and installation well lid method,

Dismantling well lid method is：The handle (61) for holding removal rod (5) top, removal rod (5) and fixed link (51) are matched respectively Sets of holes (22) and mounting hole (23) are stretched into conjunction, push and around removal rod (5) axis rotation removal rod (5), make fixed link (51) Cooperation presses closing piece (3), limited block (41) is made to slide into limiting slot one (32) in fixing groove (24) on fixed link (51) top Bottom end makes locking bar (4) outer end be detached with locked groove (12), and in lockhole (25), pushes bolt (73) rear end, makes sliding block (74) In adjacent locating slot (54), relative to removal rod (5) rotation interstage sleeve (7), so that interstage sleeve (7) bottom end is adjacent to and be against lid (2) On top surface, extracting tool is made to be relatively fixed with lid (2), two extracting tools are similarly separately fixed at two removal holes (21) On, both hands hold removal rod (5) top and dismantle the lid (2) from well seat (1) respectively；

Installing well lid method is：Post-tensioning bolt (73) rear end, makes sliding block (74) be detached with locating slot (54), and is located at limiting slot two (53) on, push simultaneously around removal rod (5) rotation removal rod (5), make removal rod (5) and fixed link (51) respectively with sets of holes (22) It is aligned with mounting hole (23), holds and pull up removal rod (5), and dismantle extracting tool out of removal hole (21).