CN207659995U - A kind of well lid locking structure and inspection shaft - Google Patents

Abstract

The utility model is related to Urban Underground infrastructure to check equipment technical field more particularly to a kind of well lid locking structure and inspection shaft.In the well lid locking structure, the first limit assembly is equipped on well lid, lockset is fixed on well lid lower part, and is connected with the second limit assembly, first limit assembly and the second limit assembly can be installed on bearing respectively each by rotation, be limited with the bounce and horizontally rotating to well lid；Wherein, the first limit assembly is opposite with the limitation direction that the second limit assembly respectively horizontally rotates well lid.The well lid locking structure can realize the self-locking of well lid, to both can ensure that the locking between well lid and bearing, the rotary spacing between well lid and bearing and bounce limit can be realized again, and then prevent well lid from causing noise because beating or rotating, and effectively improve the tamper-security of well lid, well lid play caused by substance can also be prevented in inspection shaft to leak simultaneously is even opened, it is ensured that the safety and reliability of inspection shaft.

Description

A kind of well lid locking structure and inspection shaft

Technical field

The utility model is related to Urban Underground infrastructure to check equipment technical field more particularly to a kind of pattern manhole cover lock tight knot Structure and inspection shaft.

Background technology

Inspection shaft be the power supply for Urban Underground infrastructure, water supply, draining, blowdown, communication, cable television, gas pipe, And the facilities such as public lighting circuit repair with it is easy for installation and be arranged.It is generally located in pipeline intersection, turning, caliber or slope Locate at a certain distance at degree change and on straight line pipeline section, is easy for inspecting periodically the well shape auxiliary construction of facility.

In existing inspection well construction, well lid is directly placed on bearing, and having will by anti-theft chain or pivot link What well lid and bearing connected together, have and well lid is connected on bearing together by pivot link and lock, also by bail, card slot Well lid is connected on bearing, but in above-mentioned well lid and support connecting structure, cannot be realized simultaneously to well lid relative to bearing It rotates and beats while limiting, therefore anti-sound and anti-unlatching effect cannot be provided simultaneously with.

Utility model content

(1) technical problems to be solved

The technical problem to be solved by the present invention is to provide a kind of well lid locking structure and inspection shafts, both can ensure that well lid Locking between bearing, and can realize the rotary spacing between well lid and bearing and bounce limit.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides a kind of well lid locking structure, including well lid, bearing and Lockset, the well lid are equipped with the first limit assembly, and the lockset is fixed on well lid lower part, and is connected with the second limit assembly, First limit assembly and the second limit assembly can be respectively installed on the bearing each by rotation, with to the well lid Bounce and horizontally rotating limited；Wherein, first limit assembly and the second limit assembly are respectively to the well lid water The dynamic limitation direction of flat turn is opposite.

Preferably, second limit assembly includes lock tongue and limiting slot, and the madial wall in bearing is arranged in the limiting slot On, the rotation axis of the lock tongue is connected to lockset bottom, and the external part of the lock tongue matches with the limiting slot, the lock tongue It can be installed in the limiting slot by rotation.

Preferably, the madial wall of the bearing is equipped with supporting table, and the supporting table is stretched out into well, and upper surface is used for The well lid is carried, the limiting slot is arranged in the bottom of the supporting table, the one end open of the limiting slot, another end seal It closes, the boot segment seamlessly transitted is equipped between the open end of the limiting slot and the bottom of supporting table.

Preferably, the closed end of the limiting slot is equipped with lock slots, and elastic component is equipped between the lock tongue and lockset, described Lock tongue is stuck under the effect of the elastic force of the elastic component in the lock slots by being rotated into the limiting slot.

Preferably, the bottom of the lockset is equipped with limited block, the limited block be used for the rotational angle of the lock tongue into Row limit, so that the lock tongue rotates switching between open position and locked position.

Preferably, the limiting slot is taper, and the end cross-sectional of the lock tongue is taper compatible with the limiting slot.

Preferably, coaxial be equipped with the first lockhole, the second lockhole and third are distinguished on the well lid, lockset and lock tongue to lock Hole, so that key can be sequentially inserted into first lockhole, the second lockhole and third lockhole；Under the driving of the key, institute The external part for stating lock tongue is installed on by rotation in the limiting slot.

Preferably, the circumferential direction of the well lid is equipped with pedestal, and the pedestal is mounted on the bearing, outside the pedestal Compatible card slot and bail are respectively equipped on the madial wall of wall and the bearing, the well lid drives the card slot by rotating It is mobile, the bail is fixed in the card slot, the outer wall circumferential direction along the pedestal is equipped with multiple card slots, in the branch It is correspondingly provided with multiple bails on the madial wall of seat.

Preferably, the section of the card slot and bail is mutual compatible taper.

The utility model additionally provides a kind of inspection shaft, including well lid locking structure as described above.

(3) advantageous effect

The above-mentioned technical proposal of the utility model has the advantages that：Well lid locking structure described in the utility model Including well lid, bearing and lockset, well lid is equipped with the first limit assembly, and lockset is fixed on well lid lower part, and is connected with the second limit Hyte part, the first limit assembly and the second limit assembly can be installed on bearing respectively each by rotation, with the jump to well lid It moves and horizontally rotates and limited；Wherein, the limitation that the first limit assembly and the second limit assembly respectively horizontally rotate well lid Direction is opposite.The well lid locking structure utilizes the synergistic effect of the first limit assembly and the second limit assembly, realizes well lid oneself Lock to not only can ensure that the locking between well lid and bearing, but also can realize the rotary spacing between well lid and bearing and bounce limit, into And prevent well lid from causing noise because beating or rotating, and the tamper-security of well lid is effectively improved, while can also prevent because of inspection It looks into well well lid play caused by substance leaks even to open, it is ensured that the safety and reliability of inspection shaft.

Description of the drawings

Fig. 1 is the installation diagram of the well lid locking structure of the utility model embodiment one；

Fig. 2 is the structural schematic diagram of the lockset of the utility model embodiment one；

Fig. 3 is the sectional view of the well lid of the utility model embodiment one；

Fig. 4 is the expanded schematic diagram of the well lid of the utility model embodiment one；

Fig. 5 is the sectional view of the bearing of the utility model embodiment one；

Fig. 6 is the expanded schematic diagram of the bearing of the utility model embodiment one；

Fig. 7 is the structural schematic diagram of the lockset of the utility model embodiment two；

Fig. 8 is the expanded schematic diagram of the bearing of the utility model embodiment two；

Fig. 9 is the expanded schematic diagram of the well lid of the embodiment of the present invention three；

Figure 10 is the expanded schematic diagram of the bearing of the embodiment of the present invention three.

Wherein：100, well lid locking structure；200, well lid；300, bearing；400, fastening bolt；1, lockset；2, lock tongue；3、 Second lockhole；4, third lockhole；5, through-hole；6, lid；7, the first lockhole；8, card slot；9, screw hole；10, lateral wall；11, bail； 12, supporting table；13, limiting slot；14, madial wall；15, boot segment；16, elastic component；17, lock slots.

Specific implementation mode

The embodiment of the utility model is described in further detail with reference to the accompanying drawings and examples.Following embodiment For illustrating the utility model, but cannot be used for limiting the scope of the utility model.

In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.Term The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot It is construed as a limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and cannot It is interpreted as indicating or implying relative importance.

Embodiment one

As shown in Figure 1, the well lid locking structure 100 that the present embodiment one provides includes well lid 200, bearing 300 and lockset 1, Well lid 200 is equipped with the first limit assembly, and the top of lockset 1 is fixed on 200 lower part of well lid, and the bottom of lockset 1 is connected with second Limit assembly, the first limit assembly and the second limit assembly can be respectively installed on bearing 300 each by rotation, with to well lid 200 bounce and horizontally rotating is limited；Wherein, the first limit assembly and the second limit assembly are horizontal to well lid 200 respectively Well lid 200 oneself is realized on the contrary, then using the synergistic effect of the first limit assembly and the second limit assembly in the limitation direction of rotation Lock to not only can ensure that the locking between well lid 200 and bearing 300, but also can realize the rotary spacing between well lid 200 and bearing 300 It is limited with bounce, and then prevents well lid 200 from causing noise because beating or rotating, and effectively improve the anti-theft security of well lid 200 Property.

As shown in Figures 2 and 3, the lid 6 of well lid 200 is equipped with the first lockhole 7, and second is equipped on the axis of lockset 1 Lockhole 3, the first lockhole 7 and the coaxial arrangement of the second lockhole 3, are inserted into convenient key；It is equipped with mounting disc at the top of lockset 1, The circumferential direction of mounting disc is equipped with several through-holes 5, and to ensure mounting stability, in the bottom of well lid 200, correspondence is set respectively upwards There are several screw holes 9, each through-hole 5 to be correspondingly arranged respectively with a screw hole 9, to be locked across through-hole 5 using fastening bolt 400 Tightly in screw hole 9, to which the top of lockset 1 and the bottom of well lid 200 are locked by fastening bolt 400；Preferably, lead to Hole 5 and screw hole 9 preferably surround the first lockhole 7 respectively and the axial direction of the second lockhole 3 is uniformly distributed, can be in this way when fixing lockset 1 Ensure the axially coincident of the first lockhole 7 and the second lockhole 3.

As shown in figure 3, being equipped with pedestal downwards in the circumferential direction of well lid 200, well lid 200 is mounted in bearing 300 by pedestal Supporting table 12 on, the top of the outer wall of pedestal and the madial wall 14 of bearing 300 is respectively equipped with compatible card slot 8 and bail 11, the bail 11 on bearing 300 remains stationary as, then well lid 200 can drive card slot 8 to move by rotation, to by 11 turns of bail Enter and fixes in card slot 8；It is preferred that card slot 8 is equipped with open end and blind end, to make rotation of the bail 11 in card slot 8 have Extreme position；It is preferred that the shape of card slot 8 is L-shaped, oblique line or other shapes are may be set to be, as long as bail 11 can be made to be transferred to It in card slot 8, and is finally fixed on extreme position, it is ensured that do not beat on its vertical direction, and have in the horizontal direction Certain level to extreme position.

Preferably, as shown in figure 4, the outer wall circumferential direction along pedestal is equipped with multiple card slots 8, to increase well lid 200 and bearing Reliable lock between 300, correspondingly, multiple bails 11 are correspondingly provided on the madial wall 14 of bearing 300, in the present embodiment one The distance between each card slot 8 it is equal, i.e., each card slot 8 is equal relative to the angular displacement of 200 rotation axis of well lid, correspondingly, As shown in fig. 6, the quantity of the bail 11 on bearing 300 is equal with card slot 8, and the distance between each bail 11 is equal, i.e., Each bail 11 is equal relative to the angular displacement of 200 rotation axis of well lid；It is uniformly distributed in the outer wall circumferential direction of pedestal in the present embodiment one There are four card slots 8, then corresponding on the madial wall 14 of bearing 300 there are four bails 11.

Specifically, as shown in Figure 2 and Figure 5, the second limit assembly includes lock tongue 2 and limiting slot 13, the setting of limiting slot 13 exists On the madial wall 14 of bearing 300, lock tongue 2 is equipped with a turning end and an external part, and the rotation axis of turning end is connected to 1 bottom of lockset Portion, external part and the limiting slot 13 of lock tongue 2 match, and lock tongue 2 can be installed on by rotation in limiting slot 13, to realize to well The limitation for horizontally rotating direction of lid 200, and in order to ensure comprehensive limitation that well lid 200 horizontally rotates, preferably by limiting slot 13 Direction and the direction of card slot 8 it is oppositely arranged, in this way can be by the relative rotation of bail 11 and card slot 8, to the one of well lid 200 It is a to horizontally rotate direction (as clockwise) and limited, at the same time, by the relative rotation of limiting slot 13 and lock tongue 2, to well Another of lid 200 horizontally rotates direction (as counterclockwise) and is limited；Furthermore it is preferred that lock tongue 2 is adapted with limiting slot 13, from And the vertical bounce of the limitation lock tongue 2 of limiting slot 13 is utilized, so that also there is the second limit assembly about 200 well lid of limitation to jump Dynamic effect.

Well lid 200 has locking states and open state.When well lid 200 is in locking states, first well lid 200 is passed through Bail 11 is transferred in card slot 8 by rotation, and then the external part of lock tongue 2 is transferred in limiting slot 13 by the rotation of lock tongue 2, to protect The bounce and rotation for demonstrate,proving well lid 200 are limited respectively；Conversely, when well lid 200 is in open state, first make lock tongue 2 by reversed Rotation is detached from from limiting slot 13, is then detached from by card slot 8 when the rotation of well lid 200 and bail 11, to make well lid 200 It beats and rotates unrestricted, well lid 200 can be started directly at this time.

It is rotated for the ease of driving lock tongue 2, third lockhole 4, the first lockhole is preferably respectively equipped in the rotation axis of lock tongue 2 7, the axis of the second lockhole 3 and third lockhole 4 overlaps, then key can be sequentially inserted into the first lockhole 7, the second lockhole 3 and third lock In hole 4, under the driving of key, the external part of lock tongue 2 is installed on by rotation in the limiting slot 13 of bearing 300；It is further excellent It is d1 to select the internal diameter of the first lockhole 7, and the internal diameter of the second lockhole 3 is d2, and the internal diameter of third lockhole 4 is d3, then has d1 >=d2 >=d3, To ensure that key is convenient for plug, is inserted into stable and ensures that the driven nature of key is good.

In order to optimize structure, and the fitting tight between well lid 200, lockset 1 and bearing 300 is further increased, preferably The madial wall 14 of bearing 300 is equipped with supporting table 12, and supporting table 12 is stretched out from the madial wall 14 of bearing 300 into well, supporting table For carrying well lid 200, limiting slot 13 is arranged in the bottom of supporting table 12 for 12 upper surface；The top of supporting table 12 is equipped with bail 11.Can one limiting slot 13 be only set in the bottom of supporting table 12, by rotating lock tongue 2, the external part of lock tongue 2 is caught in limit In the slot 13 of position；Can also multiple limiting slots 13 be set in the bottom of supporting table 12, and the lock tongue 2 for being correspondingly arranged equivalent amount stretches out End, rotating lock tongue 2 can drive each external part to rotate in same direction and correspond to and be caught in any limiting slot 13.

As shown in fig. 6, in the present embodiment one, limiting slot 13 is straight-line groove, one end opening, other end closing, limiting slot The boot segment 15 that seamlessly transits is equipped between 13 open end and the bottom of supporting table 12, so as in rotating lock tongue 2, lock tongue 2 External part can be by the way that in boot segment 15 automatically cut-in limiting slot 13, preferably boot segment 15 be at bell shape, in lock tongue 2 Horizontally rotate there are when deviation, can also enter in limiting slot 13 along boot segment 15；The blind end of limiting slot 13 stretches out for lock tongue 2 The rotational limitation position at end, the rotational limitation position which is preferably arranged with the card slot 8 on well lid 200 is oppositely arranged, this Sample well lid 200 is restricted with the rotation in counter clockwise direction in the clockwise direction.

Embodiment two

Well lid locking structure 100 described in the present embodiment two and the structure described in embodiment one are essentially identical, something in common It repeats no more, the difference is that：As shown in fig. 7, in well lid locking structure 100 described in the present embodiment two, the second limit group 2 turning end of lock tongue of part is connect by elastic component 16 with the bottom of lockset 1, when pressing down on lock tongue 2 by key, is being stretched While elastic component 16, the turning end of lock tongue 2 is rotated relative to rotation axis, the rotation axis of the lock tongue 2 and the first lockhole 7, the The axis of two lockholes 3 and third lockhole 4 overlaps.

As shown in figure 8, the closed end of limiting slot 13 is equipped with upward lock slots 17, it is inserted into pressing and rotating lock tongue after key 2, so that the external part of lock tongue 2 enters along boot segment 15 in limiting slot 13, when the external part of lock tongue 2 reaches closed end, stop It presses so that lock tongue 2 is popped up under the rebound effect of elastic component 16 and is stuck in lock slots 17, so that the second limit Hyte part can limit each of well lid 200 by own rotation and horizontally rotate direction, to mitigate the first limit assembly Stress improves structural reliability.

It is preferred that 1 bottom of lockset be equipped with limited block, when so that lock tongue 2 rotate relative to rotation axis, be limited block limit and There are two the turned positions of the limit, i.e. open position and locked position for tool, it is preferred that open position and locked position are respectively locked Tongue 2 turns to the position of 0 ° and 180 °, and lock tongue 2 can also be turned to 90 ° of position and be set as open position, in other words, lock The turned position range of tongue 2 is between 0-360 °, no matter rotating clockwise or rotating counterclockwise, is being limited as long as lock tongue 2 is fixed In the blind end of position slot 13, you can think that lock tongue 2 is in locked position, and lock tongue 2 rests on arbitrary turn after leaving limiting slot 13 In dynamic angle, it is considered that lock tongue 2 is in an open position, do not fixed in limiting slot 13 as long as meeting lock tongue 2；When When being inserted into key and pressing down on lock tongue 2,2 extension spring of lock tongue and the limitation for being detached from limited block, to be switched by stationary state To rotatable state, lock tongue 2 can be gone to open position or locked position as needed；Key is extracted when any time, Lock tongue 2 can be contacted by the rebound effect of elastic component 16 with limited block, to be returned to by the position-limiting action of limited block Stationary state, therefore, when the setting of said mechanism to be not inserted into key, lock tongue 2 cannot rotate, and improve the antitheft of well lid 200 Property.

Embodiment three

Well lid locking structure 100 described in the present embodiment three and the structure described in embodiment one are essentially identical, something in common It repeats no more, the difference is that：As shown in figure 9, in well lid locking structure 100 described in the present embodiment three, card slot 8 can be Taper, to be limited to slidably therein bail 11 using the sloped sidewall of card slot 8, and since the side wall of card slot 8 is flat The sloped sidewall crossed is slipped over, therefore, there can be larger frictional force between bail 11 and card slot 8, further increase bail 11 Clamping fastness；In order to be adapted with the taper card slot 8, then the section of bail 11 can be designed as taper or trapezoidal.

As shown in Figure 10, limiting slot 13 is preferably cone tank, and the height of blind end is less than the height of boot segment 15, and Boot segment 15 is seamlessly transitted between the blind end of limiting slot 13, when so that lock tongue 2 being caught in limiting slot 13 by boot segment 15, by The fixing of the conical inboard wall of limiting slot 13 acts on, and is finally limited fixing in limiting slot 13；In order to the conical limit slot 13 It is adapted, then the section of lock tongue 2 can be designed as taper or trapezoidal.

Example IV

The present embodiment four proposes a kind of inspection shaft, which includes such as in embodiment one, embodiment two or embodiment Well lid locking structure 100 described in three.The pithead position of the inspection shaft is equipped with above-mentioned well lid locking structure 100, to both It can ensure that being locked between well lid 200 and well head, and can realize that the rotary spacing of well lid 200 and bounce limit, Jin Erfang Only well lid 200 causes noise because beating or rotating, and effectively improves the tamper-security of well lid 200.

It further, can will be close between the lateral wall 10 and the borehole wall of inspection shaft of the bearing 300 of well lid locking structure 100 Connection is closed, when can prevent because leaking into external environment outside the substance in inspection shaft, caused well lid stress is excessive and play occurs very To unlatching, so that it is guaranteed that the safety and reliability of inspection shaft.

Embodiment five

On the basis of embodiment one, embodiment two, embodiment three and example IV, the present embodiment five provides one kind For 200 locking method of well lid of inspection shaft well lid is realized using the synergistic effect of the first limit assembly and the second limit assembly 200 self-locking to not only can ensure that the locking between well lid 200 and bearing 300, but also can be realized and turn between well lid 200 and bearing 300 Dynamic limit and bounce limit, and then prevent well lid 200 from causing noise because beating or rotating, and effectively improve the anti-of well lid 200 When stealing safety, while can also prevent because leaking into external environment outside the substance in inspection shaft, caused well lid stress is excessive and sends out Raw play is even opened, so that it is guaranteed that the safety and reliability of inspection shaft.

This approach includes the following steps：

S1, well lid 200 is mounted on bearing 300, and rotary well cover 200, to drive the first limit assembly to rotate and block Gu on bearing 300.

S2, the second limit assembly of rotation, so that the second position-limit mechanism fixes on bearing 300.

Wherein, the bounce that well lid 200 is limited by the first limit assembly, passes through the first limit assembly and the second limit assembly Collaboration limitation well lid 200 horizontally rotates, and the first limit assembly and the second limit assembly respectively horizontally rotate well lid 200 It is opposite to limit direction.

Specifically, this method is subdivided into following steps：

S101, ensure that lockset 1 is mounted on well lid 200, and lock tongue 2 is in rotatable state.

S102, the bail 11 that the card slot 8 of well lid 200 is aligned to bearing 300, put down well lid 200 so that pedestal is mounted in branch In the supporting table 12 of seat 300.

S103, well lid 200 is rotated clockwise, so that each bail 11 respectively enters the blind end of the horizontal segment of card slot 8, this When, 200 upper and lower displacement of well lid is limited by bail 11, and clockwise horizontal rotation displacement is limited by the blind end of card slot 8 System.

S201, lock tongue 2 is rotated counterclockwise by key, so that the external part of lock tongue 2 is transferred in limiting slot 13；Well lid 200 Displacement is rotated horizontally clockwise to be limited extremely by 300 bail 11 of bearing, is blocked counterclockwise by lock tongue 2 and bearing 300, and lock tongue 2 is propping up The displacement of 200 upper and lower directions of well lid can also be limited in seat 300 lock tongue, 2 limiting slot 13.

After locking well lid 200 using this method, when if you need to open well lid 200, it is only necessary to be reversed operation.Tool Body, it first rotates clockwise lock tongue 2 and disengages it from limiting slot 13, then rotary well cover 200 counterclockwise, then above carry well lid 200 i.e. It can.

It should be noted that the rotation side of the direction of rotation of the well lid 200 in step S102 and the lock tongue 2 in step S201 To on the contrary, to ensure that the twocouese that horizontally rotates of well lid 200 is limited.

In conclusion the well lid locking structure 100 of the present embodiment includes well lid 200, bearing 300 and lockset 1, well lid 200 Be equipped with the first limit assembly, lockset 1 is fixed on 200 lower part of well lid, and is connected with the second limit assembly, the first limit assembly and Second limit assembly each by rotation can respectively be installed on bearing 300, with to well lid 200 bounce and horizontally rotate progress Limitation；Wherein, the first limit assembly is opposite with the limitation direction that the second limit assembly respectively horizontally rotates well lid 200.The well Cover locking structure 100 and method utilize the synergistic effect of the first limit assembly and the second limit assembly, realize oneself of well lid 200 Lock to not only can ensure that the locking between well lid 200 and bearing 300, but also can realize the rotary spacing between well lid 200 and bearing 300 It is limited with bounce, and then prevents well lid 200 from causing noise because beating or rotating, and effectively improve the anti-theft security of well lid 200 Property, while when can also prevent because leaking into external environment outside the substance in inspection shaft, caused well lid stress is excessive and play occurs It even opens, so that it is guaranteed that the safety and reliability of inspection shaft.

The embodiments of the present invention provide for the sake of example and description, and are not exhaustively or to incite somebody to action The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art See.Selection and description embodiment are and to make this field to more preferably illustrate the principles of the present invention and practical application Those of ordinary skill is it will be appreciated that various embodiments with various modifications of the utility model to design suitable for special-purpose.

Claims (10)

1. a kind of well lid locking structure, which is characterized in that including well lid, bearing and lockset, the well lid is equipped with the first limit Component, the lockset are fixed on well lid lower part, and are connected with the second limit assembly, first limit assembly and the second limit group Part can be respectively installed on the bearing each by rotation, be limited with the bounce and horizontally rotating to the well lid；

Wherein, first limit assembly is opposite with the limitation direction that the second limit assembly respectively horizontally rotates the well lid.

2. well lid locking structure according to claim 1, which is characterized in that second limit assembly includes lock tongue and limit Position slot, the limiting slot are arranged on the madial wall of bearing, and the rotation axis of the lock tongue is connected to lockset bottom, the lock tongue External part matches with the limiting slot, and the lock tongue can be installed on by rotation in the limiting slot.

3. well lid locking structure according to claim 2, which is characterized in that the madial wall of the bearing is equipped with support Platform, the supporting table are stretched out into well, and for carrying the well lid, the limiting slot is arranged in the supporting table for upper surface Bottom, the one end open of the limiting slot, other end closing are equipped between the open end of the limiting slot and the bottom of supporting table The boot segment seamlessly transitted.

4. well lid locking structure according to claim 3, which is characterized in that the closed end of the limiting slot is equipped with locking Slot is equipped with elastic component between the lock tongue and lockset, the lock tongue is by being rotated into the limiting slot, and in the elasticity It is stuck in the lock slots under the elastic force effect of part.

5. well lid locking structure according to claim 4, which is characterized in that the bottom of the lockset is equipped with limited block, institute Limited block is stated for being limited to the rotational angle of the lock tongue, so that the lock tongue is between open position and locked position Rotation switching.

6. well lid locking structure according to claim 3, which is characterized in that the limiting slot is taper, the lock tongue End cross-sectional is taper compatible with the limiting slot.

7. well lid locking structure according to claim 2, which is characterized in that same respectively on the well lid, lockset and lock tongue Axis be equipped with the first lockhole, the second lockhole and third lockhole so that key can be sequentially inserted into first lockhole, the second lockhole and In third lockhole；Under the driving of the key, the external part of the lock tongue is installed on by rotation in the limiting slot.

8. according to claim 1-7 any one of them well lid locking structures, which is characterized in that the circumferential direction of the well lid is equipped with Pedestal, the pedestal are mounted on the bearing, are respectively equipped on the outer wall of the pedestal and the madial wall of the bearing and are mutually fitted The card slot and bail matched, the well lid drive the card slot to move by rotating, and the bail is fixed in the card slot, Outer wall circumferential direction along the pedestal is equipped with multiple card slots, and multiple bails are correspondingly provided on the madial wall of the bearing.

9. well lid locking structure according to claim 8, which is characterized in that the section of the card slot and bail is mutual The taper of adaptation.

10. a kind of inspection shaft, which is characterized in that including such as claim 1-9 any one of them well lid locking structure.