CN212003036U - Foundation engineering pile hole bottom expanding construction device - Google Patents
Foundation engineering pile hole bottom expanding construction device Download PDFInfo
- Publication number
- CN212003036U CN212003036U CN202020539731.4U CN202020539731U CN212003036U CN 212003036 U CN212003036 U CN 212003036U CN 202020539731 U CN202020539731 U CN 202020539731U CN 212003036 U CN212003036 U CN 212003036U
- Authority
- CN
- China
- Prior art keywords
- soil
- block
- fill
- expanding
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 84
- 239000011796 hollow space material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007790 scraping Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000005570 vertical transmission Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Abstract
The utility model relates to a foundation engineering pile hole bottom-expanding construction device, which comprises a hole-expanding device body and a hollow soil hopper, wherein a connecting frame is arranged at the hole-expanding end of the hole-expanding device body, a connecting rod is relatively arranged at one side of an opening of the soil hopper, the connecting rod is hinged and arranged on the connecting frame, and the connecting frame is provided with a limiting component for limiting the position of the soil hopper; the soil fill is interior along the actuating lever that the direction of height of soil fill extends, the lateral wall of actuating lever is equipped with the scraper blade along circumference dismantlement formula, the one end butt in the inside wall of soil fill that the actuating lever was kept away from to the scraper blade, the soil fill is installed and is used for the drive actuating lever pivoted drive assembly. The utility model discloses have the effect of conveniently clearing up soil fill inside wall earth.
Description
Technical Field
The utility model belongs to the technical field of the technique of stake hole construction and specifically relates to a foundation engineering stake hole expands end construction equipment is related to.
Background
At present, when pile holes of cast-in-place concrete piles are constructed, a motor luoyang shovel hole-forming manual bottom expanding method is generally adopted, the hole-forming construction method has the defects and disadvantages of long construction period, low construction efficiency, large operation area, large engineering quantity and the like, and meanwhile, after the motor luoyang shovel is adopted for hole forming, great potential safety hazards exist when manual bottom expanding is carried out. Thus, a large variety of pile hole bottom-enlarging devices are available on the market.
At present, for example, chinese patent document publication No. CN203834465U, the patent name is a pile hole construction device for a motor-driven luoyang shovel hole-forming mechanical bottom-expanding concrete cast-in-place pile, which includes a fixed support frame erected on the ground above a constructed pile hole, a motor-driven luoyang shovel for performing hole-forming construction on a straight hole section of the pile hole, a bottom-expanding construction device for performing bottom-expanding construction on the straight hole section, and a hoisting device installed on the fixed support frame; the bottom expanding construction device comprises a hoisting support, a reaming positioning mechanism and a reaming bit positioned right below the reaming positioning mechanism; the reaming positioning mechanism comprises an upper vertical transmission rod, an upper support arm and an upper connecting piece, and a limiting piece is arranged at the bottom end of the upper support arm; the reaming bit comprises a lower vertical transmission rod, a lower driving device, a rotating frame, a lower support arm and a lower connecting piece, wherein the lower support arm is provided with a cutting blade.
Wherein the reaming bit also comprises a soil hopper for collecting the cut soil body in the bottom reaming construction process, and the soil hopper is positioned under the lower vertical rotating rod.
The above prior art solutions have the following drawbacks: after the pile hole construction device is used for expanding the bottom once, soil in the soil hopper needs to be cleaned so as to facilitate the next bottom expansion. In order to save time, common workers choose to directly clean soft soil in the soil bucket, but some soil attached to the soil bucket is not cleaned, and becomes hard and difficult to clean after being used for a period of time, and the capacity of the soil bucket is influenced; when the cleaning is needed each time, the cleaning is generally performed manually, but the manual cleaning wastes time and labor, and is not beneficial to the development of work.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a foundation engineering stake hole expands end construction equipment, it has the effect of conveniently clearing up soil fill inside wall earth.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a foundation engineering pile hole bottom expanding construction device comprises a hole expanding device body and a hollow soil hopper, wherein a connecting frame is installed at the hole expanding end of the hole expanding device body, a connecting rod is oppositely arranged on one side of an opening of the soil hopper, the connecting rod is hinged and installed on the connecting frame, and the connecting frame is provided with a limiting assembly used for limiting the position of the soil hopper; the soil fill is interior along the actuating lever that the direction of height of soil fill extends, the lateral wall of actuating lever is equipped with the scraper blade along circumference dismantlement formula, the one end butt in the inside wall of soil fill that the actuating lever was kept away from to the scraper blade, the soil fill is installed and is used for the drive actuating lever pivoted drive assembly.
By adopting the technical scheme, after the pile hole is reamed for one time, the driving rod can be driven to rotate by the driving assembly, so that the scraper plate arranged on the driving rod can rotate in the soil hopper along the circumferential direction to scrape off soil on the inner side wall of the soil hopper, then the limit assembly loosens the limit on the connecting rod, the connecting rod is rotated to drive the soil hopper to rotate, and the soil scraped from the soil hopper can be cleaned by downwards facing the opening of the soil hopper; thereby ensuring the capacity of the soil bucket in each use.
The utility model discloses further set up to: the link is erected and is equipped with the mounting groove, the connecting rod is equipped with the screens groove with the corresponding position of mounting groove, spacing subassembly includes: the limiting block is slidably mounted in the mounting groove, one side of the limiting block is connected with the clamping block, and the other side of the limiting block is rotatably connected with the screw rod through a connecting part; the one end that the stopper was kept away from to the screens piece extends the mounting groove and blocks into the screens groove, the screw rod is connected with link screw-thread fit, the one end that the stopper was kept away from to the screw rod extends the link.
Through adopting above-mentioned technical scheme, when needs are fought the location with soil, it is corresponding with the position in screens groove to rotate the connecting rod earlier, then the rethread rotates the screw rod and extends the one end of mounting groove for the screw rod pushes the screens piece roll-off mounting groove and card income screens groove when removing towards the screens groove, this process easy operation, and the practicality is high.
The utility model discloses further set up to: the connecting member includes: locate the rotation groove of stopper, locate rotate the spacing ring of groove notch, locate the screw rod is close to the connecting block of stopper one end and locates the turning block that the screw rod one end was kept away from to the connecting block, the connecting block passes the inner circle of spacing ring, the turning block rotates to be installed at the rotation inslot.
Through adopting above-mentioned technical scheme, when rotating the screw rod and making the screw rod move towards the direction of keeping away from the screens groove, the effect of accessible spacing ring drives the stopper and removes towards the direction of keeping away from the screens groove, and then drives the screens piece and remove towards the direction of keeping away from the screens groove to can reach and loosen the constraint to the soil fill.
The utility model discloses further set up to: and one end of the screw rod extending out of the connecting frame is provided with a screwing block.
Through adopting above-mentioned technical scheme, thereby make to rotate the screw rod more smooth and easy through being provided with the turning block, improve positioning efficiency.
The utility model discloses further set up to: one end of the scraper close to the driving rod is provided with a dovetail block, and the outer side wall of the driving rod is provided with a dovetail groove used for the dovetail block to be inserted and installed in a matched mode along the extending direction.
Through adopting above-mentioned technical scheme, can accomplish the dismantlement formula installation to the scraper blade through mutually supporting of dovetail block and dovetail, reach and change when the scraper blade has worn and torn to some extent.
The utility model discloses further set up to: the bucket bottom end of the soil fill is kept away from to the actuating lever one end is equipped with the limiting plate, the limiting plate keeps away from the bucket bottom one end butt of soil fill with the forked tail piece simultaneously, the limiting plate passes through the bolt and installs in the actuating lever.
Through adopting above-mentioned technical scheme, after inserting the dovetail of actuating lever with the forked tail piece of scraper blade, the accessible with the limiting plate simultaneously with the tip butt of all forked tail pieces, rethread bolt is with its fixed mounting at the actuating lever to avoid appearing the condition that removes in scraper blade working process.
The utility model discloses further set up to: the drive assembly includes: the driving motor and the fixed plate arranged on the outer side wall of the driving motor are fixedly mounted at the bottom of the soil bucket through bolts, and the output shaft of the driving motor penetrates through the soil bucket to be connected with one end, close to the soil bucket, of the driving rod at the bottom of the soil bucket.
By adopting the technical scheme, when the driving rod needs to be driven to rotate, the operation can be finished by starting the driving motor; thereby fix the fixed plate at the soil fill through the bolt and make driving motor dismantlement formula installation, be convenient for to driving motor's maintenance.
The utility model discloses further set up to: one end of the scraper far away from the driving rod is provided with a scraper with a triangular cross section, and the tip end of the scraper is abutted against the inner side wall of the soil hopper.
Through adopting above-mentioned technical scheme, thereby make more smoothly to the soil scraping process of native fill inside wall at the scraper blade through being equipped with the scraper, reduce the resistance.
To sum up, the utility model discloses a following at least one useful technological effect:
1. after one-time reaming of the pile hole is finished, the driving rod can be driven to rotate by the driving assembly, so that the scraper plate arranged on the driving rod can rotate in the soil hopper along the circumferential direction to scrape off soil on the inner side wall of the soil hopper, the limit assembly loosens the constraint on the connecting rod, the connecting rod is rotated to drive the soil hopper to rotate, and the soil scraped from the soil hopper can be cleaned by downwards opening the soil hopper; thereby ensuring the capacity of the soil bucket in each use;
2. when the soil bucket needs to be positioned, the connecting rod is rotated to the position where the mounting groove corresponds to the clamping groove, and then the screw rod is rotated to extend out of one end of the mounting groove, so that the screw rod moves towards the clamping groove, meanwhile, the clamping block is pushed to slide out of the mounting groove and be clamped into the clamping groove;
3. the scraper can be assembled and disassembled by the mutual matching of the dovetail block and the dovetail groove, so that the scraper can be replaced when being worn.
Drawings
Fig. 1 is a schematic structural view of the whole.
Fig. 2 is a sectional view of a coupling structure between the coupling frame and the coupling rod.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a partially enlarged schematic view of a portion B in fig. 1.
Fig. 5 is a partially enlarged schematic view of a portion C in fig. 1.
Fig. 6 is a schematic structural view of the soil hopper.
In the drawings, 1, a reaming device body; 11. a connecting frame; 12. mounting grooves; 13. a clamping groove; 14. a limiting block; 141. a rotating groove; 142. a limiting ring; 15. a bit block; 16. a screw; 161. connecting blocks; 162. rotating the block; 17. screwing the block; 2. a soil hopper; 21. a connecting rod; 211. a clamping groove; 212. a clamping block; 22. a drive rod; 221. a dovetail groove; 222. a limiting plate; 23. a squeegee; 231. a dovetail block; 232. a scraper; 24. a drive motor; 241. and (7) fixing the plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, for the utility model discloses a foundation engineering stake hole under-reamed construction equipment, including reaming device body 1 and soil fill 2, the reaming end fixed mounting of reaming device body 1 has link 11, and soil fill 2 is cavity setting and opening towards reaming device body 1, and opening one side relatively fixed of soil fill 2 has connecting rod 21, and connecting rod 21's articulated installation is at link 11, and connecting rod 21's extending direction is unanimous with soil fill 2's direction of height.
As shown in fig. 2 and 3, one side of the connecting rod 21 opposite to the connecting frame 11 is provided with a clamping groove 211, a position of the connecting frame 11 corresponding to the clamping groove 211 is provided with a mounting groove 12, an extending direction of the mounting groove 12 is perpendicular to an extending direction of the connecting rod 21, a limiting block 14 is slidably mounted in the mounting groove 12, a clamping block 15 is fixed at a middle position of one side of the limiting block 14, a screw 16 is mounted at a middle position of the other end of the limiting block 14, and one end of the clamping block 15, which is far away from the limiting block 14, extends out of the mounting groove 12; screw rod 16 is connected with link 11 screw-thread fit, the one end that stopper 14 was kept away from to screw rod 16 extends link 11, the one end that screw rod 16 is close to stopper 14 is fixed with connecting block 161, the extending direction of connecting block 161 is unanimous with the extending direction of screw rod 16, the one end that screw rod 16 was kept away from to connecting block 161 is fixed with turning block 162, one side that stopper 14 is close to screw rod 16 is equipped with rotation groove 141, the notch department that rotates groove 141 is fixed with spacing ring 142, the inner circle of spacing ring 142 is passed through to connecting block 161, turning block 162 rotates and installs in rotation groove 141, can accomplish to accomplish the location of native fill 2 in the screens groove 211 is gone into to the one end drive screens piece 15 card that extends link 11 through rotating.
A screw block 17 is fixed to an end of the screw 16 extending out of the link frame 11, so that the screw 16 can be smoothly rotated.
As shown in fig. 4, the side wall of the connecting frame 11 is provided with a clamping block 212, the side wall of the connecting rod 21 is provided with a clamping groove 13 for the clamping block 212 to rotate and clamp, and when the clamping block 212 rotates and clamps into the clamping groove 13, the position of the clamping block 15 corresponds to the position of the clamping groove 13.
As shown in fig. 5 and 6, a driving rod 22 is arranged at the central axis position in the soil bucket 2, the extending direction of the driving rod 22 is consistent with the height direction of the soil bucket 2, two dovetail grooves 221 are oppositely arranged on the outer side wall of the driving rod 22, the extending direction of the dovetail grooves 221 is consistent with the extending direction of the driving rod 22, and one side of the dovetail grooves 221, which is far away from the bucket bottom of the soil bucket 2, is communicated with the outside; the soil bucket 2 is also internally provided with two scraping plates 23, one end of each scraping plate 23 is integrally fixed with a dovetail block 231, the other end of each scraping plate 23 is integrally fixed with a scraping blade 232 (shown in figure 1), the extending direction of the dovetail block 231 is consistent with the extending direction of the driving rod 22, the dovetail block 231 is installed in the dovetail groove 221 in an inserting mode, the extending direction of the scraping blade 232 is consistent with the extending direction of the dovetail block 231, the cross section of the scraping blade 232 is triangular, and the tip end of the scraping blade 232 abuts against the inner side wall of the soil bucket 2; the bottom of native fill 2 is equipped with driving motor 24, and driving motor 24's output shaft passes native fill 2 and actuating lever 22 fixed connection, and driving motor 24's lateral wall is fixed with fixed plate 241, and fixed plate 241 passes through bolt fixed mounting at native fill 2 to through the rotation of starting driving motor 24 drive actuating lever 22, make scraper 232 scrape away the earth of native fill 2 inside walls.
The limiting plate 222 is arranged at one end, far away from the driving motor 24, of the driving rod 22, opposite ends of the limiting plate 222 are respectively abutted to one end, far away from the bottom of the soil bucket 2, of the two dovetail blocks 231, and the limiting block 14 is fixed to the driving rod 22 through bolts so as to limit the position of the scraper 23.
The implementation principle of the embodiment is as follows: after the pile hole is reamed for one time, the driving rod 22 can be rotated by starting the driving motor 24, so that the scraping plate 23 arranged on the driving rod 22 can rotate in the soil bucket 2 along the circumferential direction to scrape off soil on the inner side wall of the soil bucket 2, the screw rod 16 is rotated by the screwing block 17, the clamping block 15 is driven to retract into the mounting groove 12 under the action of the limiting ring 142, the constraint on the connecting rod 21 can be released, the connecting rod 21 is rotated to drive the soil bucket 2 to rotate, and the soil scraped from the soil bucket 2 can be cleaned by enabling the opening of the soil bucket 2 to face downwards; thereby ensuring the capacity of the soil bucket 2 in each use.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The foundation engineering pile hole bottom expanding construction device is characterized by comprising a hole expanding device body (1) and a soil hopper (2) arranged in the hollow space, wherein a connecting frame (11) is installed at the hole expanding end of the hole expanding device body (1), a connecting rod (21) is oppositely arranged on one side of an opening of the soil hopper (2), the connecting rod (21) is hinged and installed on the connecting frame (11), and the connecting frame (11) is provided with a limiting assembly for limiting the position of the soil hopper (2); the soil fill (2) interior actuating lever (22) that extend along the direction of height of soil fill (2), the lateral wall of actuating lever (22) is equipped with scraper blade (23) along circumference dismantlement formula, the one end butt of actuating lever (22) is kept away from in scraper blade (23) in the inside wall of soil fill (2), soil fill (2) are installed and are used for the drive actuating lever (22) pivoted drive assembly.
2. The foundation engineering pile hole bottom-expanding construction device according to claim 1, wherein the connecting frame (11) is provided with a mounting groove (12), the connecting rod (21) is provided with a clamping groove (211) at a position corresponding to the mounting groove (12), and the limiting component comprises: the limiting block (14), the clamping block (15) and the screw rod (16), wherein the limiting block (14) is slidably mounted in the mounting groove (12), one side of the limiting block (14) is connected with the clamping block (15), and the other side of the limiting block (14) is rotatably connected with the screw rod (16) through a connecting part; one end of the clamping block (15) far away from the limiting block (14) extends out of the mounting groove (12) and is clamped into the clamping groove (211), the screw rod (16) is connected with the connecting frame (11) in a threaded fit mode, and one end of the screw rod (16) far away from the limiting block (14) extends out of the connecting frame (11).
3. The foundation engineering pile hole under-reaming construction device of claim 2, wherein the connecting member comprises: locate rotation groove (141) of stopper (14), locate rotate spacing ring (142) of groove (141) notch, locate screw rod (16) are close to connecting block (161) of stopper (14) one end and locate connecting block (161) and keep away from turning block (162) of screw rod (16) one end, connecting block (161) pass the inner circle of spacing ring (142), turning block (162) rotate and install in rotating groove (141).
4. A foundation engineering pile hole bottom-expanding construction device according to claim 3, characterized in that one end of the screw rod (16) extending out of the connecting frame (11) is provided with a screwing block (17).
5. The foundation engineering pile hole bottom-expanding construction device is characterized in that one end, close to the driving rod (22), of the scraper (23) is provided with a dovetail block (231), and the outer side wall of the driving rod (22) is provided with a dovetail groove (221) for the dovetail block (231) to be inserted and installed in a matched mode in the extending direction.
6. The foundation engineering pile hole bottom-expanding construction device according to claim 5, wherein a limit plate (222) is arranged at one end of the driving rod (22) far away from the bottom of the soil hopper (2), the limit plate (222) is abutted to one end of the dovetail block (231) far away from the bottom of the soil hopper (2), and the limit plate (222) is mounted on the driving rod (22) through a bolt.
7. The footing defining construction device of claim 1, wherein said driving assembly includes: driving motor (24) and fixed plate (241) of locating driving motor (24) lateral wall, fixed plate (241) pass through bolt fixed mounting in the bottom of native fill (2), the output shaft of driving motor (24) passes native fill (2) and is connected near the fill end one end of native fill (2) with actuating lever (22).
8. The foundation engineering pile hole bottom-expanding construction device according to claim 1, wherein one end of the scraper (23) far away from the driving rod (22) is provided with a scraper (232) with a triangular cross section, and the tip of the scraper (232) abuts against the inner side wall of the soil hopper (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539731.4U CN212003036U (en) | 2020-04-13 | 2020-04-13 | Foundation engineering pile hole bottom expanding construction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539731.4U CN212003036U (en) | 2020-04-13 | 2020-04-13 | Foundation engineering pile hole bottom expanding construction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003036U true CN212003036U (en) | 2020-11-24 |
Family
ID=73413758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539731.4U Expired - Fee Related CN212003036U (en) | 2020-04-13 | 2020-04-13 | Foundation engineering pile hole bottom expanding construction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323895A (en) * | 2020-11-26 | 2021-02-05 | 马和平 | Novel intelligence pole ground is opened and is expanded device |
| CN113445922A (en) * | 2021-09-01 | 2021-09-28 | 江苏旌翔建材科技有限公司 | Foundation pile hole expands aperture device |
-
2020
- 2020-04-13 CN CN202020539731.4U patent/CN212003036U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323895A (en) * | 2020-11-26 | 2021-02-05 | 马和平 | Novel intelligence pole ground is opened and is expanded device |
| CN113445922A (en) * | 2021-09-01 | 2021-09-28 | 江苏旌翔建材科技有限公司 | Foundation pile hole expands aperture device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212003036U (en) | Foundation engineering pile hole bottom expanding construction device | |
| CN203175403U (en) | Dry drilling pore-forming under-reaming drill bit of rotary drilling rig | |
| CN212001098U (en) | Pile hole bottom expanding construction device | |
| CN216305824U (en) | Rotary drilling rig convenient for efficient operation of impurity absorption | |
| CN116927695B (en) | Rock drilling device for rotary drilling | |
| CN216739577U (en) | Composite wall brushing device of underground continuous wall grooving machine | |
| CN111495951A (en) | Soil remediation system | |
| CN113482140B (en) | Municipal works sewer desilting device | |
| CN113477628B (en) | Bulldozer shovel blade assembly convenient to disassemble and assemble | |
| CN218779566U (en) | Engineering machinery bucket convenient to clean | |
| CN218880992U (en) | Excavator bucket with automatic cleaning function | |
| CN218971119U (en) | Graded reaming full-hydraulic bottom-enlarging drill bit | |
| CN218596831U (en) | Land leveling compaction device | |
| CN217191242U (en) | Cleaning equipment of rammer | |
| CN217331694U (en) | Soil sampling device for soil detection | |
| CN116815846A (en) | Bulldozer shovel with soil loosening mechanism | |
| CN219412475U (en) | Drilling machine for foundation bored pile construction | |
| CN220487497U (en) | Pile driver soil cleaning device for photovoltaic power generation construction | |
| CN213898863U (en) | Soil cleaning device used in pointed cone head of rotary excavator | |
| CN219261013U (en) | Cast-in-place pile slag removing device | |
| CN212224019U (en) | Hydraulic engineering desilting device | |
| CN215801630U (en) | A draw a device for concrete pipe pile | |
| CN117664645B (en) | Ultra-large diameter bored pile slurry sampling equipment and sampling method | |
| CN219344617U (en) | Drilling equipment that stability is strong | |
| CN214532797U (en) | Flat bottom cleaning drill bit of rotary drilling rig |
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: 20201124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |