CN206142596U - Car accidental movement protective device - Google Patents
Car accidental movement protective device Download PDFInfo
- Publication number
- CN206142596U CN206142596U CN201621082509.6U CN201621082509U CN206142596U CN 206142596 U CN206142596 U CN 206142596U CN 201621082509 U CN201621082509 U CN 201621082509U CN 206142596 U CN206142596 U CN 206142596U
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- Prior art keywords
- drag
- trigger mechanism
- speed limit
- rope sheave
- displacement
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- 230000001681 protective effect Effects 0.000 title abstract 2
- 238000006073 displacement reaction Methods 0.000 claims abstract description 50
- 230000001360 synchronised effect Effects 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000004224 protection Effects 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000003466 anti-cipated effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model relates to a car accidental movement protective device, its detecting element includes the overspeed governor frame, the speed limit rope sheave, it is connected by central axostylus axostyle and overspeed governor frame, the synchronizing wheel, it is gear form disc shape, sets up in one side of speed limit rope sheave, sets up with speed limit rope sheave concentric shaft, rotates along with the speed limit rope sheave is synchronous, displacement detection device, it rotates with central axostylus axostyle is connected, is connected with on displacement detection device's the outside and triggers the electro -magnet, triggers the ejector pin of electro -magnet and is connected with synchronous locking lever, and synchronous locking lever is corresponding with the gear interval of synchronizing wheel, still is equipped with reset spring between displacement detection device and the overspeed governor frame, signal output device, it is connected with the overspeed governor frame, include with the corresponding push rod that triggers in displacement detection device's contact to and with make the UCMP cable that the trigger mechanism that stops the unit is connected. It increases displacement detection device and signal output device realizes that the car displacement of elevator under condition of open door detects and the function of output.
Description
Technical field
The utility model is related to a kind of unintended car movement protection device.
Background technology
UCMP (Unintended car movement protection system), i.e., unexpected car movement protection.Come
Come from EN81-1：A3 amendments in 1998, are primarily upon the lifting of elevator safety performance：When elevator is in level position and door
During opening, if accidental movement occurs in elevator, UCMP safety device horse back starting protections stop elevator operation, are that passenger increases
One safety guarantee.It is directed to motor and control system, can be divided into detection means, control circuit and stop part.
Utility model content
The purpose of this utility model is to provide and a kind of increase displacement detector and signal output apparatus and exist realizing elevator
A kind of unintended car movement protection device of car displacement detecting and the function of exporting under door opening state.
To solve above-mentioned technical problem, the technical solution of the utility model is：
A kind of unintended car movement protection device, including detector unit and stop unit；
The detector unit includes,
- limiter of speed frame；
- speed limit rope sheave, it is connected by central shaft with the limiter of speed frame；
- synchronizing wheel, it is in gear-like disc-shape, is arranged on the side of the speed limit rope sheave, same with the speed limit rope sheave
Heart axle is arranged, with the speed limit rope sheave synchronous axial system；
- displacement detector, it is arranged on the side of the synchronizing wheel, rotates with the central shaft and is connected, institute's rheme
Trigger electromagnet is connected with the outside for moving detection means, the locking bar connection synchronous with of the push rod of the trigger electromagnet is described
Synchronous locking bar is corresponding with the gear spacing of the synchronizing wheel, between institute's displacement sensing device side and the limiter of speed frame
It is additionally provided with back-moving spring；
- signal output apparatus, it is correspondingly arranged at the opposite side of institute's displacement sensing device, and with the limiter of speed frame
Connection, including the triggering push rod corresponding with the contact of institute displacement sensing device, and the triggering machine with the stop unit
The UCMP drag-lines that structure is connected.
Preferably, above-mentioned a kind of unintended car movement protection device, wherein the stop unit includes；
- frame structure, it includes the cant board that both sides are oppositely arranged, and connection corresponding with the cant board back shroud and
Upper cover plate；
- dynamic and static cleat assembly, its relative spacing is arranged, and the quiet cleat assembly is fixedly connected on the side of cant board, with
The back shroud is oppositely arranged；
- trigger mechanism, it is fixedly connected on the back shroud, and is connected with the UCMP drag-lines, the cant board it
Between be provided with the spacing latch hook corresponding with the trigger mechanism, the spacing latch hook and the horizontal cunning being connected between the cant board
The spacing connection of bar, the cant board of both sides is provided with the deep-slotted chip breaker corresponding with the horizontal sliding bar, and the two of the horizontal sliding bar
End is fixedly connected respectively with the brake connecting rod for being arranged at cant board both sides, the other end of the brake connecting rod and the dynamic clamping plate group
Part connects；
- tripping spring, it is arranged between the horizontal sliding bar and bottom bar seat, and the bottom bar seat two ends are solid with the cant board
Fixed connection.
Preferably, above-mentioned a kind of unintended car movement protection device, wherein the signal output apparatus are also including up
Hypervelocity drag-line, and be connected with the up hypervelocity drag-line and the upper super triggering drag hook corresponding with the triggering push rod.
Preferably, above-mentioned a kind of unintended car movement protection device, wherein the side of the displacement detector is provided with
Armed lever, described armed lever one end is fixedly connected with the synchronous locking bar, the other end be fixedly connected on institute's displacement sensing device
Bearing pin pivot bush unit.
Preferably, above-mentioned a kind of unintended car movement protection device, wherein the bottom of the displacement detector is provided with
Arc guide groove, the arc guide groove is arranged with the synchronizing wheel concentric, is also fixedly connected with the displacement detector and is stretched
Enter the locating rod to the arc guide groove.
Preferably, above-mentioned a kind of unintended car movement protection device, wherein the trigger mechanism includes trigger mechanism machine
Frame, the transverse link being movably connected in the trigger mechanism frame, and the longitudinal direction triggering corresponding with the spacing latch hook connect
Bar；
One end of the transverse link is connected with the UCMP drag-lines, the termination of the other end and the trigger mechanism frame
Side between be provided with transverse compression spring, the transverse link is additionally provided with first connecting portion and second connecting portion, described first
The bar footpath size of connecting portion is big compared with the bar footpath size of the second connecting portion；
One end of the longitudinal direction triggering connecting rod is connected with longitudinal slide, the termination of the other end and the trigger mechanism frame
Longitudinal compression spring is provided between bottom, the longitudinal slide is provided with the circular pin position hole of vertical insertion and long kidney-shaped hole, institute
The bar footpath size for stating first connecting portion is little compared with the circular pin position hole, and big compared with the long kidney-shaped hole, the bar footpath of the second connecting portion is big
Little little compared with the long kidney-shaped hole, when initial, the first connecting portion is laterally connected in the hole of the circular pin position.
Compared with prior art, the utility model Advantageous Effects are mainly reflected in：Speed limit rope sheave and sedan-chair in the technical scheme
Railway carriage or compartment displacement state is consistent, and with speed limit rope sheave synchronous axial system, when car is moved up and down, speed limit rope sheave is rotated synchronizing wheel, synchronizing wheel
Follow rotation.
When the trigger electromagnet being fixed on displacement detector generation action after door-opened elevator status signal disconnects, electricity
After terraced door opening state signal disconnects, electromagnet power-off, the push rod of trigger electromagnet drives synchronous locking bar to enter to the tooth of synchronizing wheel
At wheel spacing, displacement detector is connected with synchronizing wheel, now car generation is when moving up and down, speed limit rope sheave and synchronization
Wheel drives displacement detector to rotate, contact triggering letter when car side-play amount reaches maximum, on displacement detector
The triggering putter action of number output device, the signal output apparatus can pull UCMP drag-lines, realize that car is anticipated by UCMP drag-lines
The detection signal output of outer movement.Realize the function of car displacement detecting and output of the elevator under door opening state.
In addition, signal output apparatus also include up hypervelocity drag-line, and with this it is up hypervelocity drag-line be connected and with institute
The corresponding upper super triggering drag hook of triggering push rod is stated, when ascending for elevator exceeds the speed limit, speed limit rope sheave can drive up hypervelocity drag-line to compel
Make super triggering drag hook promote triggering putter action, again by the up hypervelocity drag-line being connected with rope brake up hypervelocity is realized
Signal output, completes up-running over-speed protection function, by above description it can be seen that on the one hand the detection means keeps conventional limit
The up-downgoing overspeed detection function of fast device, still further aspect increases displacement detecting and signal output apparatus to realize that elevator is opening the door
The function of car displacement detecting and output under state.
In addition, stop unit is the stop system in unintended car movement protection device in the technical scheme, it is main to utilize
The UCMP drag-lines of detector unit provide trigger action, traction steel-cable is clamped by dynamic and static cleat assembly and realizes limiting elevator car
The movement in railway carriage or compartment, with the up protection of elevator overspeed and car accidental movement protection stop function.Specifically, the stop unit by
Several major part compositions such as dynamic and static cleat assembly, brake connecting rod, trigger mechanism and tripping spring, when detector unit is detected
When the up overspeed of car or car accidental movement fault-signal, fault-signal is provided to triggering machine by UCMP drag-lines
Structure, the trigger mechanism triggers spacing latch hook, discharges tripping spring, horizontal sliding bar is promoted by the elastic force of tripping spring, by the cunning
Bar drives both sides brake connecting rod to swing along the deep-slotted chip breaker of cant board, and the dynamic cleat assembly of connecting rod drive will be through sound cleat assembly
Between traction steel-cable clamp, realize limiting the upper and lower of lift car by sound clamping plate and the frictional force of traction steel-cable
Line position is moved.
Description of the drawings
Fig. 1：The utility model detector unit structural representation；
Fig. 2：The utility model stop cellular construction schematic diagram；
Fig. 3：The utility model trigger mechanism structural front view；
Fig. 4：The utility model trigger mechanism structural side view.
Specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in further detail, so that the utility model skill
Art scheme is more readily understood and grasps.
As depicted in figs. 1 and 2, a kind of unintended car movement protection device, including detector unit and stop unit；
The detector unit includes,
- limiter of speed frame 1；
- speed limit rope sheave 2, it is connected by central shaft with the limiter of speed frame 1；
- synchronizing wheel 3, it is in gear-like disc-shape, is arranged on the side of the speed limit rope sheave 2, with the speed limit rope sheave 2
Concentric shafts are arranged, with the synchronous axial system of speed limit rope sheave 2；
- displacement detector 4, it is arranged on the side of the synchronizing wheel 3, rotates with the central shaft and is connected, described
Trigger electromagnet 5 is connected with the outside of displacement detector 4, the locking bar 7 synchronous with of push rod 6 of the trigger electromagnet 5 connects
Connect, the synchronous locking bar 7 is corresponding with the gear spacing of the synchronizing wheel 3, the side of institute's displacement sensing device 4 and the speed limit
Back-moving spring 8 is additionally provided between device frame 1；
- signal output apparatus, it is correspondingly arranged at the opposite side of institute's displacement sensing device 4, and with the limiter of speed machine
Frame 1 connects, including the triggering push rod 10 corresponding with the contact 9 of institute displacement sensing device 4, and with the stop unit
The UCMP drag-lines 11 that trigger mechanism 17 is connected.
Wherein described stop unit includes：
- frame structure, it includes the cant board 12 that both sides are oppositely arranged, and the bonnet of connection corresponding with the cant board 12
Plate 13 and upper cover plate 14；
- (15,16), its relative spacing is arranged dynamic and static cleat assembly, and the quiet cleat assembly 16 is fixedly connected on cant board
12 side, is oppositely arranged with the back shroud 13；
- trigger mechanism 17, it is fixedly connected on the back shroud 13, and is connected with the UCMP drag-lines 11, the side
Be provided with the spacing latch hook 18 corresponding with the trigger mechanism 17 between riser 12, the spacing latch hook 18 be connected to it is described edge-on
The spacing connection of horizontal sliding bar 19 between plate 12, the cant board 12 of both sides is provided with the arc corresponding with the horizontal sliding bar 19
Shape groove 20, the two ends of the horizontal sliding bar 19 are fixedly connected respectively with the brake connecting rod 21 for being arranged at the both sides of cant board 12, described
The other end of brake connecting rod 21 is connected with the dynamic cleat assembly 15；
- tripping spring 22, it is arranged between the horizontal sliding bar 19 and bottom bar seat 23, the two ends of bottom bar seat 23 with it is described
Cant board 12 is fixedly connected.
As shown in Figure 3 and Figure 4, the trigger mechanism includes trigger mechanism frame 27, is movably connected on the trigger mechanism
Transverse link 28 in frame 27, and the longitudinal direction triggering connecting rod 29 corresponding with the spacing latch hook 18；
One end of the transverse link 28 is connected with the UCMP drag-lines 11, the termination of the other end and the trigger mechanism
Transverse compression spring 30 is provided between the side of frame 27, the transverse link 28 is additionally provided with the company of first connecting portion 28.0 and second
Socket part 28.1, the bar footpath size of the first connecting portion 28.0 is big compared with the bar footpath size of the second connecting portion 28.1；
One end of the longitudinal direction triggering connecting rod 29 is connected with longitudinal slide 31, the termination of the other end and the trigger mechanism machine
Longitudinal compression spring 32 is provided between the bottom of frame 27, the longitudinal slide 31 is provided with the circular pin position hole 31.0 of vertical insertion
With long kidney-shaped hole 31.1, the bar footpath size of the first connecting portion 28.0 is little compared with the circular pin position hole 31.0, compared with the long kidney-shaped hole
31.1 is big, and the bar footpath size of the second connecting portion 28.1 is little compared with the long kidney-shaped hole 31.1, when initial, the first connecting portion
28.0 are laterally connected in circular pin position hole 31.0.
When UCMP drag-lines are pulled, UCMP drag-lines pull the first connecting portion of transverse link, transverse link to pass through circular pin
Position hole, drive second connecting portion enter circular pin position hole, due to the bar footpath of second connecting portion it is little compared with long kidney-shaped hole, longitudinal compression bullet
Spring orders about longitudinal rod slide downward, and then triggers spacing latch hook.
Wherein described signal output apparatus also include up hypervelocity drag-line 24, and are connected with the up hypervelocity drag-line 24
And the upper super triggering drag hook 25 corresponding with the triggering push rod 10.
The side of wherein described displacement detector 4 is provided with armed lever, and described armed lever one end is fixed with the synchronous locking bar 7 and connected
Connect, the other end and the bearing pin pivot bush unit being fixedly connected on institute's displacement sensing device.
The bottom of wherein described displacement detector 4 is provided with arc guide groove 25, and the arc guide groove 25 is synchronous with described
The setting of 3 concentrics is taken turns, the locating rod 26 stretched in the arc guide groove 25 is also fixedly connected with the displacement detector 4.
Speed limit rope sheave is consistent with car displacement state in the technical scheme, and synchronizing wheel is with speed limit rope sheave synchronous axial system, car
When moving up and down, speed limit rope sheave is rotated, and synchronizing wheel also follows rotation.
When the trigger electromagnet being fixed on displacement detector generation action after door-opened elevator status signal disconnects, electricity
After terraced door opening state signal disconnects, electromagnet power-off, the push rod of trigger electromagnet drives synchronous locking bar to enter to the tooth of synchronizing wheel
At wheel spacing, displacement detector is connected with synchronizing wheel, now car generation is when moving up and down, speed limit rope sheave and synchronization
Wheel drives displacement detector to rotate, contact triggering letter when car side-play amount reaches maximum, on displacement detector
The triggering putter action of number output device, the signal output apparatus can pull UCMP drag-lines, realize that car is anticipated by UCMP drag-lines
The detection signal output of outer movement.Realize the function of car displacement detecting and output of the elevator under door opening state.
In addition, signal output apparatus also include up hypervelocity drag-line, and with this it is up hypervelocity drag-line be connected and with institute
The corresponding upper super triggering drag hook of triggering push rod is stated, when ascending for elevator exceeds the speed limit, speed limit rope sheave can drive up hypervelocity drag-line to compel
Make super triggering drag hook promote triggering putter action, again by the up hypervelocity drag-line being connected with rope brake up hypervelocity is realized
Signal output, completes up-running over-speed protection function, by above description it can be seen that on the one hand the detection means keeps conventional limit
The up-downgoing overspeed detection function of fast device, still further aspect increases displacement detecting and signal output apparatus to realize that elevator is opening the door
The function of car displacement detecting and output under state.
In addition, stop unit is the stop subsystem in unintended car movement protection device in the technical scheme, main profit
Trigger action is provided with the UCMP drag-lines of detector unit, traction steel-cable is clamped by dynamic and static cleat assembly and is realized limiting elevator
The movement of car, with the up protection of elevator overspeed and car accidental movement protection stop function.Specifically, the stop unit by
Several major part compositions such as dynamic and static cleat assembly, brake connecting rod, trigger mechanism and tripping spring, when detector unit is detected
When the up overspeed of car or car accidental movement fault-signal, fault-signal is provided to triggering machine by UCMP drag-lines
Structure, the trigger mechanism triggers spacing latch hook, discharges tripping spring, horizontal sliding bar is promoted by the elastic force of tripping spring, by the cunning
Bar drives both sides brake connecting rod to swing along the deep-slotted chip breaker of cant board, and the dynamic cleat assembly of connecting rod drive will be through sound cleat assembly
Between traction steel-cable clamp, realize limiting the upper and lower of lift car by sound clamping plate and the frictional force of traction steel-cable
Line position is moved.
Certainly, the above is only concrete application example of the present utility model, protection domain of the present utility model is not constituted and is appointed
What is limited.All employing equivalents or equivalence replacement and the technical scheme that formed, all fall within the utility model rights protection model
Within enclosing.
Claims (6)
1. a kind of unintended car movement protection device, including detector unit and stop unit；
The detector unit includes,
- limiter of speed frame；
- speed limit rope sheave, it is connected by central shaft with the limiter of speed frame；
- synchronizing wheel, it is in gear-like disc-shape, is arranged on the side of the speed limit rope sheave, with the speed limit rope sheave concentric shafts
Arrange, with the speed limit rope sheave synchronous axial system；
- displacement detector, it is arranged on the side of the synchronizing wheel, rotates with the central shaft and is connected, the displacement inspection
Trigger electromagnet, the locking bar connection synchronous with of the push rod of the trigger electromagnet, the synchronization are connected with the outside for surveying device
Locking bar is corresponding with the gear spacing of the synchronizing wheel, also sets between institute's displacement sensing device side and the limiter of speed frame
There is back-moving spring；
- signal output apparatus, it is correspondingly arranged at the opposite side of institute's displacement sensing device, and connects with the limiter of speed frame
Connect, including the triggering push rod corresponding with the contact of institute displacement sensing device, and the trigger mechanism with the stop unit
The UCMP drag-lines being connected.
2. a kind of unintended car movement protection device according to claim 1, it is characterised in that：The stop unit bag
Include：
- frame structure, it includes the cant board that both sides are oppositely arranged, and the back shroud and upper lid of connection corresponding with the cant board
Plate；
- dynamic and static cleat assembly, its relative spacing is arranged, and the quiet cleat assembly is fixedly connected on the side of cant board, and described
Back shroud is oppositely arranged；
- trigger mechanism, it is fixedly connected on the back shroud, and is connected with the UCMP drag-lines, is set between the cant board
There are the spacing latch hook corresponding with the trigger mechanism, the spacing latch hook and the horizontal sliding bar limit being connected between the cant board
Position connection, the cant board of both sides is provided with the deep-slotted chip breaker corresponding with the horizontal sliding bar, the two ends point of the horizontal sliding bar
It is not fixedly connected with the brake connecting rod for being arranged at cant board both sides, the other end of the brake connecting rod connects with the dynamic cleat assembly
Connect；
- tripping spring, it is arranged between the horizontal sliding bar and bottom bar seat, and the bottom bar seat two ends are fixed with the cant board and connected
Connect.
3. a kind of unintended car movement protection device according to claim 1 and 2, it is characterised in that：The signal output
Device also includes up hypervelocity drag-line, and is connected with the up hypervelocity drag-line and corresponding with the triggering push rod upper super
Triggering drag hook.
4. a kind of unintended car movement protection device according to claim 1, it is characterised in that：Institute's displacement sensing device
Side be provided with armed lever, described armed lever one end is fixedly connected with the synchronous locking bar, the other end be fixedly connected on the displacement
Bearing pin pivot bush unit in detection means.
5. a kind of unintended car movement protection device according to claim 1, it is characterised in that：Institute's displacement sensing device
Bottom be provided with arc guide groove, the arc guide groove is arranged with the synchronizing wheel concentric, also solid on the displacement detector
Surely it is connected with the locating rod stretched in the arc guide groove.
6. a kind of unintended car movement protection device according to claim 2, it is characterised in that：The trigger mechanism includes
Trigger mechanism frame, the transverse link being movably connected in the trigger mechanism frame, and it is corresponding with the spacing latch hook
Longitudinal direction triggering connecting rod；
One end of the transverse link is connected with the UCMP drag-lines, the termination of the other end and the one of the trigger mechanism frame
Transverse compression spring is provided between side, the transverse link is additionally provided with first connecting portion and second connecting portion, first connection
The bar footpath size in portion is big compared with the bar footpath size of the second connecting portion；
One end of the longitudinal direction triggering connecting rod is connected with longitudinal slide, the bottom of the termination of the other end and the trigger mechanism frame
Between be provided with longitudinal compression spring, the longitudinal slide is provided with the circular pin position hole of vertical insertion and long kidney-shaped hole, described
The bar footpath size of one connecting portion is little compared with the circular pin position hole, big compared with the long kidney-shaped hole, the bar footpath size of the second connecting portion compared with
The long kidney-shaped hole is little, and when initial, the first connecting portion is laterally connected in the hole of the circular pin position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082509.6U CN206142596U (en) | 2016-09-05 | 2016-09-05 | Car accidental movement protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082509.6U CN206142596U (en) | 2016-09-05 | 2016-09-05 | Car accidental movement protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206142596U true CN206142596U (en) | 2017-05-03 |
Family
ID=58621048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621082509.6U Expired - Fee Related CN206142596U (en) | 2016-09-05 | 2016-09-05 | Car accidental movement protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206142596U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429704A (en) * | 2016-09-05 | 2017-02-22 | 宁波奥德普电梯部件有限公司 | Accidental car movement protection device |
| CN111824895A (en) * | 2019-04-15 | 2020-10-27 | 杭州沪宁电梯部件股份有限公司 | Accidental car movement protection device |
-
2016
- 2016-09-05 CN CN201621082509.6U patent/CN206142596U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429704A (en) * | 2016-09-05 | 2017-02-22 | 宁波奥德普电梯部件有限公司 | Accidental car movement protection device |
| CN111824895A (en) * | 2019-04-15 | 2020-10-27 | 杭州沪宁电梯部件股份有限公司 | Accidental car movement protection device |
| CN111824895B (en) * | 2019-04-15 | 2024-06-04 | 杭州沪宁电梯部件股份有限公司 | Unexpected protection device that removes of car |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |