CN207073151U - Cable overhauls the concealed headstock gear of manhole cover plate - Google Patents
Cable overhauls the concealed headstock gear of manhole cover plate Download PDFInfo
- Publication number
- CN207073151U CN207073151U CN201720701884.2U CN201720701884U CN207073151U CN 207073151 U CN207073151 U CN 207073151U CN 201720701884 U CN201720701884 U CN 201720701884U CN 207073151 U CN207073151 U CN 207073151U
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- China
- Prior art keywords
- cover plate
- pit
- guide pipe
- guide
- cable
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Abstract
Cable overhauls the concealed headstock gear of manhole cover plate, described cover plate is placed in the well head of cable inspection-pit, the upper surface of cover plate flushes with cable inspection-pit upper surface, the left side edge of cover plate passes through be hinged on the left of the borehole wall of hinge and cable inspection-pit, positioning structure of cover plate is provided between on the right side of cover plate and on the right side of the borehole wall of cable inspection-pit, the opener coordinated with cover plate bottom right side top pressure is internally provided with the right side of the borehole wall of cable inspection-pit.The utility model is simple in construction, easily fabricated, is easily installed and constructs, also allow for opening and closing the operation of cover plate, sealing is tight, is easy to raise cover plate, sets simple locking bar to can reach good anti-theft effect, concealed structure is set simultaneously, anti-theft effect is more preferably.
Description
Technical field
The invention belongs to technical field of electric power construction, more particularly to a kind of cable maintenance concealed headstock gear of manhole cover plate.
Background technology
Growing with domestic city process, in urban construction, circuit is typically all laid in underpass,
Just need to set an electric power overhaul well every a segment distance, be provided for screening electric power overhaul well at the top of electric power overhaul well
Cover plate.Existing cover plate is only to cover on the well head of cable inspection-pit, is still much to be formed using casting, cover plate is easy
Stolen, well head is open after being stolen, and easily pedestrian, driving are threatened, and when rainy in rainwater inflow electric power overhaul well,
Seriously affect the safe operation of electric power.In addition, when being overhauled, raise cover plate and typically use crowbar, this will destroy electricity
Seal clearance between cable inspection-pit and cover plate, has influence on sealing effectiveness.
The content of the invention
The present invention is in order to solve weak point of the prior art, there is provided a kind of sealing is strong, good anti-theft effect, is easy to grasp
The cable maintenance concealed headstock gear of manhole cover plate of work.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：Cable maintenance manhole cover plate is concealed to open and close dress
Put, described cover plate is placed in the well head of cable inspection-pit, and the upper surface of cover plate flushes with cable inspection-pit upper surface, cover plate
Left side edge pass through hinge and cable inspection-pit the borehole wall on the left of it is be hinged, on the right side of cover plate with the borehole wall right side of cable inspection-pit
Between be provided with positioning structure of cover plate, be internally provided with the right side of the borehole wall of cable inspection-pit and opened with what cover plate bottom right side top pressure coordinated
Open mechanism；
Internal reservation has upright opening and lateral aperture on the right side of the borehole wall of cable inspection-pit, and upright opening upper end is apart from cable inspection-pit
Upper surface 1-5cm, upright opening top are embedded with installing pipe, and installing pipe internal whorl is connected with plug, plug upper surface with it is vertical
Hole upper end flushes, and plug upper surface middle part is provided with interior six square grooves, sets rubber sprue in interior six square groove, lateral aperture is located at cover plate
Lower section, lateral aperture left side connects with cable inspection-pit inside, with being connected on the left of upright opening on the right side of lateral aperture；
Flap opening mechanism includes guide rod, guide, spring and lever, and guide is fixedly installed in upright opening and in guide
Heart line is arranged in vertical, and guide rod is slided and is plugged in guide, and guide rod top is fixedly installed baffle ring, and spring is set in guide rod
On, spring upper end and lower end are fixedly connected with fork arm with baffle ring and guide upper-end contact, lower end of the guide rod respectively, and lever is in left high right
Low dip is set, and lever left end is extend into inside cable inspection-pit through lateral aperture, and lateral aperture interior edge anterior-posterior horizontal direction is set
There is the first bearing pin, lever left pivot movement is connected on the first bearing pin, is extend on the right side of lever in upright opening, along length side on the right side of lever
To offering front and rear penetrating elongated hole, fork arm bottom by being connected through the bearing pin of elongated hole second with lever drive, lever left end to
Upper bending simultaneously contacts with cover plate bottom, and under the action of the spring, fork arm bottom contacts with its lower end top pressure.
Positioning structure of cover plate includes the first guide pipe, the second guide pipe and connecting plate, the first guide pipe and the second guide pipe
Set along left and right horizontal direction, the second guide pipe and connecting plate are embedded in cover plate inner right side, the center line of the second guide pipe
Overlapped with the center line of the first guide pipe, the left end of the second guide pipe is fixedly connected with connecting plate right lateral surface, the table of connecting plate
Area is more than the sectional area of the second guide pipe, and the first guide pipe is embedded in the right side borehole wall of cable inspection-pit, the first guide pipe
Left end it is corresponding with the right-hand member of the second guide pipe or so and connect, be inserted with locking bar in the first guide pipe and the second guide pipe, lock
The center line of bar and the central axis of guide rod and stagger setting, locking bar left end contact with connecting plate, and locking bar right-hand member extend into vertical
The block being provided with straight hole, in upright opening on rear side of guide rod, contacted with locking bar right-hand member on the left of block, block right side with it is vertical
Inwall contact on the right side of hole, the length of block in left-right direction are more than the length of the second guide pipe.
Peripherally disposed on the inside of the well head of cable inspection-pit upper end to have step groove, the bottom surface of step groove is horizontally disposed with,
Angle between the bottom surface and side of step groove is equal with the angle between the bottom surface and side of cover plate and is obtuse angle, cover plate
Rubber seal ring is provided between bottom surface and the bottom surface of step groove, the junction between the side and step groove side of cover plate is provided with
The lower thin and upper thick rubber seal tape in circular cone cartridge type.
The inwall of upright opening is fixedly installed the support block for support limit block.
Installation pipe outer wall is provided with the reinforcement being embedded in the borehole wall.
Lever left end is provided with back-up roller wheel.
The method opened and closed using the described cable maintenance concealed headstock gear of manhole cover plate to cover plate, including following step
Suddenly,
（1）It is first 1-5cm cable inspection-pit thickness of shaft wall above plug when needing to open cover plate progress upkeep operation
Concrete cut away or removed using other modes；
（2）Rubber sprue is taken out out of interior six square grooves, is extend into using allen wrench in interior six square grooves and is rotated and will block up
Head screws out out of mounting hole；
（3）Block is taken out out of upright opening, the right-hand member for clamping locking bar is extend into upright opening using pliers, firmly to
Right zip bar, because the length of block in left-right direction is more than the length of the second guide pipe, until by locking bar right-hand member and upright opening
During the inwall contact of right side, locking bar determines to extract out out of second guide pipe；
（4）It extend into installing pipe and is threadedly coupled in installing pipe using with externally threaded depression bar, turn depression bar makes
Press guide rod for depression bar lower end, and side's rotation depression bar, depression bar move down on the ground, overcome the elastic force of spring, while lower end of the guide rod
Fork plate drive the first bearing pin to push lever right-hand member, due to the setting of elongated hole, during the first bearing pin moves down, elongated hole is along the
One pin slide, thus be avoided that lever and the first bearing pin produce the stress of horizontal direction, lever using the first bearing pin as fulcrum,
The back-up roller wheel of lever left end turns to promote cover plate bottom right side upwards, and back-up roller wheel simultaneously moves right along cover plate lower surface, cover plate
Right side is rotated up by pivot point of hinge, after protrusion cable inspection-pit top surface 3-5cm is moved up on the right side of cover plate, due to
Angle between the bottom surface and side of cover plate is obtuse angle, and clasp cover plate right flank using L-type pull bar draws to upper left side, you can will cover
Plate is started and opened completely；
（5）Worker, which enters, carries out upkeep operation in cable inspection-pit；
（6）Cover plate is closed after maintenance, locking bar is re-inserted into the second guide pipe and contacted with connecting plate, then
Block is placed into upright opening and contacted with locking bar right-hand member to prevent locking bar from receiving vibration when car is crossed on ground from the second mounting hole
Inside scurry out, then screw on plug, rubber sprue is filled in groove, finally plug is sealed again with concrete, concrete upper surface
Keep smooth with cable inspection-pit borehole wall upper surface.
It is internal on the right side of the borehole wall of cable inspection-pit that lock is set be hinged on the left of the well head of cable inspection-pit on the left of cover plate
Bar, locking bar are located in the first guide pipe and the second guide pipe, and cover plate is firmly locked in well head, plays good safe antitheft
Effect.
Due to cable inspection-pit well lid and occasionally open, therefore each opening for using of the present invention is by 1-5cm's
Concrete destruction, overhaul blocked again every time, this is acceptable cost.
The cover plate and the borehole wall of the present invention is made of bar-mat reinforcement casting concrete.Reinforcement second is played in the setting of connecting plate
The effect of guide pipe, and avoid the concrete when pouring from entering in the second guide pipe.Tube side part is installed reinforcement is set, this
Sample can make installing pipe keep stronger fixing.Closure plate, which plays, avoids the concrete when pouring from entering in installing pipe.
Angle between the bottom surface and side of step groove is equal with the angle between the bottom surface and side of cover plate and is blunt
Angle, even if the thickness of cover plate is very thick, a personal hand-held pull bar, using the hinge in the left side of cover plate as fulcrum, also allow for starting upwards,
It is simple and easy.Rubber seal ring and rubber seal tape can play good sealing function, so as to avoid extraneous rainwater from flowing into cable
In inspection-pit, while electrical cables inspection-pit interior air-flow is isolated from the outside, reduces the source of moisture.Che Shihui generations are crossed on road surface
Vibration, vibration can cause locking bar to move right, therefore the present invention sets block to prevent locking bar from moving axially.
Set because lever left end also moves right while rising during jacking cover plate, therefore in lever left end
Back-up roller wheel is to reduce and cover plate frictional force.
In summary, the present invention is simple in construction, easily fabricated, is easily installed and constructs, and also allows for opening and closing cover plate
Operation, sealing is tight, is easy to raise cover plate, sets simple locking bar to can reach good anti-theft effect, while set hidden
Concealed structure, anti-theft effect is more preferably.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the right side view of fork arm in Fig. 1.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the cable of the invention maintenance concealed headstock gear of manhole cover plate, described cover plate 1 are put
Put in the well head of cable inspection-pit 2, the upper surface of cover plate 1 flushes with the upper surface of cable inspection-pit 2, the left side edge of cover plate 1
By be hinged on the left of the borehole wall of hinge 3 and cable inspection-pit 2, set between the borehole wall right side of the right side of cover plate 1 and cable inspection-pit 2
There is positioning structure of cover plate, the unlatching machine coordinated with the bottom right side top pressure of cover plate 1 is internally provided with the right side of the borehole wall of cable inspection-pit 2
Structure.
Internal reservation has upright opening 4 and lateral aperture 5 on the right side of the borehole wall of cable inspection-pit 2, and the upper end of upright opening 4 is examined apart from cable
The upper surface 1-5cm of well workover 2, the top of upright opening 4 are embedded with installing pipe 6, and the internal whorl of installing pipe 6 is connected with plug 7, on plug 7
Surface flushes with the upper end of upright opening 4, and the upper surface middle part of plug 7 is provided with interior six square grooves, and rubber sprue 8 is set in interior six square groove,
Lateral aperture 5 is located at the lower section of cover plate 1, and the left side of lateral aperture 5 connects with the inside of cable inspection-pit 2, and the right side of lateral aperture 5 and upright opening 4 are left
Side connects.
The opener of cover plate 1 includes guide rod 9, guide 10, spring 11 and lever 12, and guide 10 is fixedly installed on upright opening 4
Interior and guide 10 center line is arranged in vertical, and guide rod 9 is slided and is plugged in guide 10, and the top of guide rod 9 is fixedly installed
Baffle ring 13, spring 11 are set on guide rod 9, the top and bottom of spring 11 respectively with baffle ring 13 and the upper-end contact of guide 10, guide rod 9
Lower end is fixedly connected with fork arm 14, and lever 12 is obliquely installed in right low left high, and the left end of lever 12 extend into cable through lateral aperture 5
Inside inspection-pit 2, the interior edge anterior-posterior horizontal direction of lateral aperture 5 is provided with the first bearing pin 15, the pin of the left pivot movement of lever 12 connection first
On axle 15, the right side of lever 12 is extend into upright opening 4, and the right side of lever 12 offers front and rear penetrating elongated hole 16 along its length,
The bottom of fork arm 14 through the bearing pin 27 of elongated hole 16 second with lever 12 by being connected, the upward bending of the left end of lever 12 and and cover plate
1 bottom contacts, and in the presence of spring 11, the bottom of fork arm 14 contacts with its lower end top pressure.
Positioning structure of cover plate includes the first guide pipe 17, the second guide pipe 18 and connecting plate 19, the first guide pipe 17 and
Two guide pipes 18 are set along left and right horizontal direction, and the second guide pipe 18 and connecting plate 19 are embedded in the inner right side of cover plate 1, and second
The center line of guide pipe 18 overlaps with the center line of the first guide pipe 17, left end and the right side table of connecting plate 19 of the second guide pipe 18
Face is fixedly connected, and the surface area of connecting plate 19 is more than the sectional area of the second guide pipe 18, and the first guide pipe 17 is embedded in cable inspection
In the right side borehole wall of well workover 2, the left end of the first guide pipe 17 is corresponding with the right-hand member of the second guide pipe 18 or so and connects, and first leads
It is inserted with locking bar 20 into the guide pipe 18 of pipe 17 and second, the center line of locking bar 20 and the central axis of guide rod 9 and staggering is set
Put, the left end of locking bar 20 is contacted with connecting plate 19, and the right-hand member of locking bar 20 is extend into upright opening 4, is provided with upright opening 4 positioned at guide rod
The block 21 of 9 rear sides, the left side of block 21 contact with the right-hand member of locking bar 20, and the right side of block 21 contacts with the right side inwall of upright opening 4, block
21 length in left-right direction is more than the length of the second guide pipe 18.
Peripherally disposed on the inside of the well head of the upper end of cable inspection-pit 2 to have step groove, the bottom surface of step groove is horizontally disposed with,
Angle between the bottom surface and side of step groove is equal with the angle between the bottom surface and side of cover plate 1 and is obtuse angle, cover plate 1
Bottom surface and step groove bottom surface between be provided with rubber seal ring 22, the connection between the side and step groove side of cover plate 1
Place is provided with the lower thin and upper thick rubber seal tape 23 in circular cone cartridge type.
The inwall of upright opening 4 is fixedly installed the support block 24 for support limit block 21.
The outer wall of installing pipe 6 is provided with the reinforcement 25 being embedded in the borehole wall.
The left end of lever 12 is provided with back-up roller wheel 26.
The method opened and closed using the described cable maintenance concealed headstock gear of manhole cover plate to cover plate, including following step
Suddenly,
（1）It is first 1- the thickness of shaft wall of 7 top cable inspection-pit of plug 2 when needing to open the progress upkeep operation of cover plate 1
5cm concrete is cut away or removed using other modes；
（2）Rubber sprue 8 is taken out out of interior six square grooves, is extend into using allen wrench in interior six square grooves and is rotated and will block up
First 7 screw out out of mounting hole；
（3）Block 21 is taken out out of upright opening 4, the right-hand member for clamping locking bar 20 is extend into upright opening 4 using pliers,
Firmly zip bar 20 to the right, because the length of block 21 in left-right direction is more than the length of the second guide pipe 18, until by locking bar
When 20 right-hand members contact with the right side inwall of upright opening 4, locking bar 20 determines to extract out out of second guide pipe 18；
（4）It extend into installing pipe 6 and is threadedly coupled in installing pipe 6, turn depression bar using with externally threaded depression bar
Depression bar lower end is set to press guide rod 9, side's rotation depression bar, depression bar move down on the ground, overcome the elastic force of spring 11, while guide rod
The fork plate of 9 lower ends drives the first bearing pin 15 to push the right-hand member of lever 12, and due to the setting of elongated hole 16, the first bearing pin 15 moved down
Cheng Zhong, elongated hole 16 slide along the first bearing pin 15, thus are avoided that the bearing pin 15 of lever 12 and first produces the stress of horizontal direction, lever
12 with the first bearing pin 15 be fulcrum, and the back-up roller wheel 26 of the left end of lever 12 turns to promote the bottom right side of cover plate 1, back-up roller upwards
Wheel 26 is simultaneously moved right along the lower surface of cover plate 1, and the right side of cover plate 1 is rotated up with hinge 3 for pivot point, when the right side of cover plate 1 to
After the upper mobile top surface 3-5cm of protrusion cable inspection-pit 2, because the angle between the bottom surface and side of cover plate 1 is obtuse angle, L is used
Type pull bar clasps the right flank of cover plate 1 and drawn to upper left side, you can cover plate 1 is started and opened completely；
（5）Worker, which enters, carries out upkeep operation in cable inspection-pit 2；
（6）Cover plate 1 is closed after maintenance, by locking bar 20 be re-inserted into the second guide pipe 18 and with connecting plate 19
Contact, then block 21 is placed into upright opening 4 and contacted with the right-hand member of locking bar 20 to prevent locking bar 20 from receiving shaking when car is crossed on ground
It is dynamic to be scurried out out of second mounting hole, then plug 7 is screwed on, rubber sprue 8 is filled in groove, finally with concrete again plug 7
Seal, concrete upper surface keeps smooth with the borehole wall upper surface of cable inspection-pit 2.
The present embodiment is not that the shape to the present invention, material, structure etc. make any formal limitation, every according to this hair
Any simple modification, equivalent change and modification that bright technical spirit is made to above example, belongs to the technology of the present invention side
The protection domain of case.
Claims (6)
1. cable overhauls the concealed headstock gear of manhole cover plate, described cover plate is placed in the well head of cable inspection-pit, cover plate
Upper surface flushes with cable inspection-pit upper surface, it is characterised in that：The left side edge of cover plate passes through hinge and cable inspection-pit
It is be hinged on the left of the borehole wall, it is provided with positioning structure of cover plate, cable inspection-pit between the borehole wall right side of cable inspection-pit on the right side of cover plate
The borehole wall on the right side of be internally provided with cover plate bottom right side top pressure coordinate opener；
Internal reservation has upright opening and lateral aperture on the right side of the borehole wall of cable inspection-pit, and upright opening upper end is apart from cable inspection-pit upper end
Face 1-5cm, upright opening top are embedded with installing pipe, and installing pipe internal whorl is connected with plug, plug upper surface with upright opening
End flushes, and plug upper surface middle part is provided with interior six square grooves, sets rubber sprue in interior six square groove, lateral aperture is located under cover plate
Side, lateral aperture left side connects with cable inspection-pit inside, with being connected on the left of upright opening on the right side of lateral aperture；
Flap opening mechanism includes guide rod, guide, spring and lever, and guide is fixedly installed in upright opening and the center line of guide
It is arranged in vertical, guide rod is slided and is plugged in guide, and guide rod top is fixedly installed baffle ring, and spring is set on guide rod,
Spring upper end and lower end are fixedly connected with fork arm with baffle ring and guide upper-end contact, lower end of the guide rod respectively, and lever is in right low left high
It is obliquely installed, lever left end is extend into inside cable inspection-pit through lateral aperture, and lateral aperture interior edge anterior-posterior horizontal direction is provided with
First bearing pin, lever left pivot movement are connected on the first bearing pin, are extend on the right side of lever in upright opening, on the right side of lever along its length
Front and rear penetrating elongated hole is offered, by being connected through the bearing pin of elongated hole second with lever drive, lever left end is upward for fork arm bottom
Bending simultaneously contacts with cover plate bottom, and under the action of the spring, fork arm bottom contacts with its lower end top pressure.
2. cable according to claim 1 overhauls the concealed headstock gear of manhole cover plate, it is characterised in that：Positioning structure of cover plate
Including the first guide pipe, the second guide pipe and connecting plate, the first guide pipe and the second guide pipe are set along left and right horizontal direction,
Second guide pipe and connecting plate are embedded in the center line weight of cover plate inner right side, the center line of the second guide pipe and the first guide pipe
Close, the left end of the second guide pipe is fixedly connected with connecting plate right lateral surface, and the surface area of connecting plate is more than cutting for the second guide pipe
Area, the first guide pipe are embedded in the right side borehole wall of cable inspection-pit, the right side of the left end of the first guide pipe and the second guide pipe
End left and right is corresponding and connects, and locking bar, the center line of locking bar and the center of guide rod are inserted with the first guide pipe and the second guide pipe
Line is vertical and stagger setting, locking bar left end contact with connecting plate, and locking bar right-hand member is extend into upright opening, and position is provided with upright opening
Block on rear side of guide rod, block left side contact with locking bar right-hand member, contacted on the right side of block with inwall on the right side of upright opening, and block edge is left
The length of right direction is more than the length of the second guide pipe.
3. cable according to claim 1 overhauls the concealed headstock gear of manhole cover plate, it is characterised in that：On cable inspection-pit
Peripherally disposed on the inside of the well head at end to have step groove, the bottom surface of step groove is horizontally disposed with, the bottom surface and side of step groove it
Between angle it is equal with the angle between the bottom surface and side of cover plate and be obtuse angle, the bottom surface of cover plate and the bottom surface of step groove it
Between be provided with rubber seal ring, the junction between the side and step groove side of cover plate is provided with lower thin and upper thick in circular cone cartridge type
Rubber seal tape.
4. cable according to claim 2 overhauls the concealed headstock gear of manhole cover plate, it is characterised in that：The inwall of upright opening
It is fixedly installed the support block for support limit block.
5. cable according to claim 2 overhauls the concealed headstock gear of manhole cover plate, it is characterised in that：Installation pipe outer wall is set
It is equipped with the reinforcement being embedded in the borehole wall.
6. cable according to claim 2 overhauls the concealed headstock gear of manhole cover plate, it is characterised in that：Lever left end is set
There is back-up roller wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720701884.2U CN207073151U (en) | 2017-06-16 | 2017-06-16 | Cable overhauls the concealed headstock gear of manhole cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720701884.2U CN207073151U (en) | 2017-06-16 | 2017-06-16 | Cable overhauls the concealed headstock gear of manhole cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207073151U true CN207073151U (en) | 2018-03-06 |
Family
ID=61512879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720701884.2U Expired - Fee Related CN207073151U (en) | 2017-06-16 | 2017-06-16 | Cable overhauls the concealed headstock gear of manhole cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207073151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090858A (en) * | 2017-06-16 | 2017-08-25 | 国网河南鄢陵县供电公司 | Cable overhauls the concealed headstock gear of manhole cover plate |
| CN110984229A (en) * | 2019-11-13 | 2020-04-10 | 重庆特斯联智慧科技股份有限公司 | A well lid for wisdom fire control |
-
2017
- 2017-06-16 CN CN201720701884.2U patent/CN207073151U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090858A (en) * | 2017-06-16 | 2017-08-25 | 国网河南鄢陵县供电公司 | Cable overhauls the concealed headstock gear of manhole cover plate |
| CN107090858B (en) * | 2017-06-16 | 2019-06-07 | 国网河南鄢陵县供电公司 | Cable overhauls the concealed headstock gear of manhole cover plate |
| CN110984229A (en) * | 2019-11-13 | 2020-04-10 | 重庆特斯联智慧科技股份有限公司 | A well lid for wisdom fire control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180306 Termination date: 20190616 |
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| CF01 | Termination of patent right due to non-payment of annual fee |