CN214695593U - Construction device for anchor rod static pressure pile - Google Patents
Construction device for anchor rod static pressure pile Download PDFInfo
- Publication number
- CN214695593U CN214695593U CN202120936588.7U CN202120936588U CN214695593U CN 214695593 U CN214695593 U CN 214695593U CN 202120936588 U CN202120936588 U CN 202120936588U CN 214695593 U CN214695593 U CN 214695593U
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- rod
- pile
- base
- static pressure
- fixing
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Abstract
The utility model relates to a building reinforcement equipment field especially relates to stock static pressure pile construction equipment. The anchor rod static pressure pile construction device comprises a base, wherein a pile hole for installing a static pressure pile is formed in the center of the base, a plurality of pre-fixing rods are screwed on the base, and the plurality of pre-fixing rods are arranged around the pile hole; the base is detachably provided with a lifting device, and the lifting device is provided with a driving motor which is connected with the pre-fixing rod to drive the pre-fixing rod to rotate; the edge of the base is provided with a lifting supporting leg, and the lifting supporting leg is supported on the ground to adjust the inclination angle of the base; the pre-fixing rod is hollow, a movable pull rod is arranged inside the pre-fixing rod, a plurality of reinforcing rods are hinged to the pull rod, and one ends of the reinforcing rods penetrate out of the pre-fixing rod. Through the reaction force of the pre-fixing rod during construction of the static pressure resisting pile, construction of the static pressure pile can be achieved without foundation foundations.
Description
Technical Field
The utility model relates to a building reinforcement equipment field especially relates to stock static pressure pile construction equipment.
Background
The anchor rod static pressure pile technology is a common construction technology for reinforcing an existing building or structure. The dead weight of a building or a structure is used as a pile pressing counter force, the anchor rod pile is pressed into foundation soil by utilizing the pile pressing counter force device in sections, the existing anchor rod static pressure pile device and the existing pile pressing counter force come from the weight of the building, on one hand, the weight of the building is required to be large enough, and on the other hand, the concentrated counter force in the pile pressing process has higher requirement on the integral rigidity of the building. Therefore, anchor static piles are limited by building properties: under the condition of small weight or poor rigidity of a building, the existing construction condition of the anchor rod static pressure pile is not met; the pile pressing construction causes larger towing settlement, when a building is sensitive to settlement and differential settlement, the existing anchor rod static pressure pile device can cause certain damage to the building, and meanwhile, the vertical downward direction cannot be ensured when the anchor rod static pressure pile is installed, so that the original foundation is easily damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses stock static pressure stake construction equipment.
The technical problem to be solved is that: under the condition that the rigidity of a building foundation in a construction site is poor, settlement is easily caused while the static pressure pile is deflected when the anchor rod static pressure pile is constructed.
In order to solve the technical problem, the utility model discloses stock static pressure pile construction equipment adopts following scheme.
The construction device of the anchor rod static pressure pile comprises a base, wherein the center of the base is provided with a pile hole for installing the static pressure pile, and the middle part of the base is detachably fixed with a reaction frame for extruding the static pressure pile; a plurality of pre-fixing rods inserted into the ground are screwed on the base surrounding pile holes;
the base is detachably provided with a lifting device, the lifting device is provided with a driving motor, and the driving motor is connected with the pre-fixing rod to drive the pre-fixing rod to rotate; the edge of the base is provided with a lifting supporting leg, and the lifting supporting leg is supported on the ground to adjust the inclination angle of the base; a level gauge is fixedly arranged on the base;
the pre-fixing rod is hollow, a movable pull rod is arranged inside the pre-fixing rod, a plurality of reinforcing rods are hinged to the pull rod, and one ends of the reinforcing rods penetrate out of the pre-fixing rod.
Preferably, the lifting device comprises a sliding rod vertically and detachably mounted on the base, a driving motor is slidably mounted on the sliding rod through a sliding block, and an output shaft of the driving motor is connected with the pre-fixing rod.
Preferably, the lifting device further comprises two horizontally arranged cross rods, the two horizontally arranged cross rods are arranged in parallel, two ends of each cross rod are respectively installed on the corresponding slide rod through sliding blocks, a driving motor is fixedly installed in the middle of each cross rod, and a fixing frame is installed on an output shaft of the driving motor; the periphery of the top of the pre-fixing rod is fixed with a convex block which is clamped on the fixing frame.
Preferably, the circumferential surface of the pre-fixing rod is provided with a through hole corresponding to the reinforcing rod, the pull rod is provided with an ear seat, one end of the reinforcing rod is hinged on the ear seat, and the free end of the reinforcing rod inclines upwards and penetrates out of the through hole of the pre-fixing rod; the length of the reinforcing rod is 40cm-50 cm.
Preferably, the free end of the reinforcing rod is sleeved with a protective cap, the outer end of the protective cap is positioned outside the pre-fixing rod and is conical, the inner end of the protective cap is positioned in the pre-fixing rod, and the inner end of the protective cap is provided with a clamping ring with the diameter larger than that of the through hole.
Preferably, a limiting piston is fixed at the bottom of the pull rod, and the limiting piston is slidably arranged in the pre-fixing rod; the top of the pull rod is provided with a pull ring.
Preferably, a plurality of round holes are formed in the base at equal intervals around the pile hole, a screw cylinder is fixedly arranged in each round hole, and the pre-fixing rod is installed in the screw cylinder in a threaded mode.
Preferably, screw rods are fixed at four corners of a square on the upper surface of the base, wherein the four corners take the screw cylinder and the pile hole as the center.
Preferably, the middle part of the base is detachably provided with a reaction frame, the reaction frame is provided with a pressurizing pile, the pressurizing pile is positioned right above the static pressure pile, and the pressurizing pile applies pressure to the static pressure pile.
Preferably, the lifting support legs comprise support screws installed at four corners of the base in a screwed mode, anti-slip pads are installed at the bottoms of the support screws, hand wheels are arranged at the tops of the support screws and used for rotating the support screws, and the hand wheels are detachably connected with the support screws.
The original anchor rod static pressure pile mostly takes a stable foundation as a stress point to bear the reaction force when the static pressure pile is extruded downwards, but the old building does not have the stable foundation and is easy to damage the foundation when the static pressure pile is extruded. Meanwhile, the instability of the foundation can cause the insertion of the static pressure pile to shift, which affects the construction.
The utility model discloses stock static pressure pile construction equipment compares with prior art, has following beneficial effect:
the mode that the original loading device with the static pressure pile is fixed on the foundation is changed, the pre-fixing rods are arranged on the base in a plurality of modes, the pre-fixing rods are inserted into the ground, then the reinforcing rods are controlled by the pull rods arranged in the pre-fixing rods to extend out of the pre-fixing rods, and therefore the reinforcing rods are transversely inserted into the ground, and the pre-fixing rods are utilized to resist the reaction force when the static pressure pile is loaded.
Under the premise that the base is stable, a pile hole is formed in the middle of the base and used for arranging the static pressure pile and restraining the static pressure pile to ensure that the static pressure pile is perpendicular to the base. Thus, the static pressure pile can be vertically inserted into the ground only by keeping the base horizontal. Therefore, a plurality of lifting support legs are arranged on the edge of the base, and the inclination angle of the base can be adjusted through the lifting support legs to keep the base horizontal.
Drawings
FIG. 1 is a schematic view of the apparatus for constructing a static pressure pile of an anchor rod of the present invention;
FIG. 2 is a schematic view of the construction device for the anchor rod static pressure pile of the present invention after the lifting device is removed and the reaction frame is installed;
FIG. 3 is an enlarged view of the inside of the pre-fixing rod;
FIG. 4 is a top view of the base;
fig. 5 is a bottom view of the hand wheel.
Description of reference numerals: the device comprises a sliding rod 1, a sliding block 2, a cross rod 3, a driving motor 4, a lifting device 5, an output shaft 6, a pull ring 7, a fixing frame 8, a convex block 9, a pre-fixing rod 10, a screw rod 11, a screw cylinder 12, a pull rod 13, a reinforcing rod 14, a limiting piston 15, a pile hole 16, an anchor static pressure pile 17, a limiting concave circular table 18, a base 19, a hand wheel 20, a screw hole 21, a supporting screw rod 22, an anti-slip pad 23, a four-foot concave hole 24, a four-foot convex tooth 25, a connecting rod 26, a circular table 27, a protective cap 28, a rotating mounting shaft 29, a static pressure pile reaction frame 30 and a pressurizing column 31.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to fig. 1; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.
In order to solve the problem that the construction of the anchor static pressure pile 17 is easy to cause settlement and cause the static pressure pile 17 to shift under the condition that the construction site building foundation has poor rigidity, as shown in fig. 1 to 5.
The anchor rod static pressure pile construction device comprises a base 19, wherein a pile hole 16 for installing a static pressure pile 17 is formed in the center of the base 19, a plurality of pre-fixing rods 10 are screwed on the base 19, and the plurality of pre-fixing rods 10 are arranged around the pile hole 16;
the base 19 is detachably provided with a lifting device 5, and the lifting device 5 is provided with a driving motor 4 which is connected with the pre-fixing rod 10 to drive the pre-fixing rod 10 to rotate; the edge of the base 19 is provided with a lifting supporting leg which is supported on the ground to adjust the inclination angle of the base 19;
the pre-fixing rod 10 is hollow, a movable pull rod 13 is installed inside the pre-fixing rod, a plurality of reinforcing rods 14 are hinged to the pull rod 13, and one end of each reinforcing rod 14 penetrates out of the pre-fixing rod 10.
Specifically, the base 19 is used for connecting the installation base of other equipment, and is preferably in a flat plate shape, and is welded into a stable whole by using structural steel. The shape of the lifting leg can be preferably a rectangular or round symmetrical structure according to the actual use situation, the lifting leg is rectangular as shown in fig. 4, and the lifting leg is arranged at four corners. The middle of the base 19 is provided with a pile hole 16, a static pressure pile 17 is arranged in the pile hole 16 in a sliding mode, the pile hole 16 is in clearance fit with the static pressure pile 17, and the pile hole 16 can restrain the static pressure pile 17 to enable the static pressure pile 17 to have only one translational degree of freedom along the axial direction of the static pressure pile 17, namely the static pressure pile 17 is perpendicular to the base 19 and slides in the pile hole 16 of the base 19. A plurality of pre-fixing rods 10 are provided around the pile hole 16, and the pre-fixing rods 10 are inserted into the ground for fixing the entire base 19. Wherein a vertical sleeve is fixed in the pile hole 16, and a static pressure pile 17 is arranged in the sleeve in a sliding way.
The pre-fixing rod 10 is a hollow threaded rod, the bottom of the pre-fixing rod 10 is conical, a mounting hole is formed downwards from the top, a pull rod 13 is mounted in the mounting hole, and meanwhile the diameter of the mounting hole is larger than that of the pull rod 13. Meanwhile, a plurality of telescopic reinforcing rods 14 are installed on the pre-fixing rod 10, and the reinforcing rods 14 can extend out of the pre-fixing rod 10 and be inserted into the ground so as to clamp the pre-fixing rod 10 in the soil. And may be retracted inwardly into the pre-fixation rod 10 when disassembly is desired. Specifically, as shown in fig. 3, one end of the reinforcing rod 14 is hinged to the pull rod 13, and the other end of the reinforcing rod 14 is inclined upward and penetrates out of the side surface of the pre-fixing rod 10, so that when the pull rod 13 moves upward, the reinforcing rod 14 is pushed out of the pre-fixing rod 10. When the pulling rod 13 is moved downward, the reinforcing rod 14 can be drawn back into the pre-fixing rod 10. A plurality of pre-fixing rods 10 are radially arranged around the pile hole 16 at equal intervals. Two pre-fixing rods 10 are arranged at the left and right sides of the pile hole 16 as shown in fig. 3.
Meanwhile, the pre-fixing rod 10 is in threaded fit with the base 19, and the pre-fixing rod 10 can be drilled into the ground by rotating the pre-fixing rod 10 under the matching of the self weight of the base 19 and the self threads of the pre-fixing rod 10. Therefore, the lifting device 5 is further arranged on the upper surface of the base 19 and above the pre-fixing rod 10, the driving motor 4 is mounted on the lifting device 5, and the driving motor 4 drives the pre-fixing rod 10 to rotate.
Specifically, the lifting device 5 comprises a slide rod 1 vertically and detachably mounted on a base 19, a driving motor 4 is slidably mounted on the slide rod 1 through a slide block 2, and an output shaft 6 of the driving motor 4 is connected with a pre-fixing rod 10. The lifting device 5 further comprises two horizontally arranged cross rods 3, the two parallel cross rods 1 are arranged, two ends of each cross rod 3 are respectively installed on the corresponding slide rod 1 through sliding blocks 2, a driving motor 4 is fixedly installed in the middle of each cross rod 3, and a fixing frame 8 is installed on an output shaft 6 of each driving motor 4; the periphery of the top of the pre-fixing rod 10 is fixed with a convex block 9, and the convex block 9 is clamped on the fixing frame 8. As shown in fig. 1. The dead weight of horizontal pole 3 and motor is pressed on in advance dead lever 10, can promote the motor when in advance dead lever 10 up-and-down motion, and then drives horizontal pole 3 up-and-down motion. Two ends of the cross rod 3 are respectively connected with the sliding rod 1 in a sliding way through the sliding block 2 and are used for resisting the torque when the pre-fixing rod 10 is rotated. The slider refers to a part which can be slidably mounted on the sliding rod, the slider can be clamped in a sliding groove on the sliding rod, and the sliding block can also be a sleeve sliding peach-colored part on the sliding rod.
As shown in fig. 1 and 3, a through hole corresponding to the reinforcing rod 14 is formed on the circumferential surface of the pre-fixing rod 10, an ear seat is formed on the pull rod 13, a rotating installation shaft 29 is fixed at one end of the reinforcing rod, and the rotating installation shaft is rotatably arranged on the ear seat, so that one end of the reinforcing rod 14 is hinged with the pull rod 13. The free end of the reinforcing rod 14 inclines upwards and penetrates out of the through hole of the pre-fixing rod 10; the length of the reinforcing bar 14 is 40cm-50 cm. The free end of the reinforcing rod 14 is sleeved with a protective cap 28, the outer end of the protective cap 28 is positioned outside the pre-fixing rod 10 and is conical, the inner end of the protective cap 28 is positioned in the pre-fixing rod 10, and the inner end of the protective cap is provided with a snap ring with the diameter larger than that of the through hole. Wherein the through hole is a waist hole with a vertical long axis direction, and the snap ring of the protective cap 28 only needs to be larger than the short axis of the waist hole.
A limiting piston 15 is fixed at the bottom of the pull rod 13, and the limiting piston 15 is slidably arranged in the pre-fixing rod 10; the pull ring 7 is mounted on the top of the pull rod 13. The limiting piston 15 can ensure that the pull rod 13 is always positioned in the center of the pre-fixing rod 10, so that the extending lengths of all the reinforcing rods 14 are the same. Specifically, a stopper concave boss 18 is fixed to the upper surface of the stopper piston 15, a groove is formed in the center of the upper surface of the stopper concave boss 18, and the pull rod 13 is inserted into the groove and fixed.
A plurality of round holes are arranged on the base 19 at equal intervals around the pile hole 16, a screw cylinder 12 is fixedly arranged in the round holes, and the pre-fixing rod 10 is installed in the screw cylinder 12 in a threaded mode.
As shown in fig. 4, a lead screw 11 is fixed to the upper surface of the base 1919 at the four corners of a square centered on the barrel 12 and the pile hole 16, and the lead screw 11 extends upward from the upper surface of the base 19.
The middle part of the base 19 is detachably provided with a reaction frame 30, the reaction frame 30 is provided with a pressurizing pile 31, the pressurizing pile 31 is positioned right above the static pressure pile 17, and the pressurizing pile 31 applies pressure to the static pressure pile 17. The reaction frame 30 is the equipment for applying the downward acting force to the rancour pile hole 16, and has no special improvement with the reaction frame 30 constructed by the prior art anchor static pressure pile 17, in the utility model, the reaction frame 30 is detachably arranged on the base 19.
The lifting support legs comprise support screws 22 which are in screwed connection with four corners of the base 19, screw holes 21 are formed in the four corners of the base, and the support screws 22 are in screwed connection with the screw holes 21. The bottom of the support screw 22 is provided with a non-slip mat 23, the top of the support screw 22 is provided with a hand wheel 20 for rotating the support screw 22, and the hand wheel 20 is detachably connected with the support screw 22. The connection mode of the hand wheel 20 and the support screw 22 can adopt a spline, or as shown in fig. 5, a circular truncated cone 27 is fixed on an inner ring of the hand wheel 20 through a connecting rod 26, a four-foot convex tooth 25 is fixed on the circular truncated cone 27, and the four-foot convex tooth 25 is matched with a four-foot concave hole 24 at the top of the support screw 22. And a level gauge is fixed on the base 19 for detecting the inclination angle of the base.
The utility model discloses the theory of operation: firstly, a base 19 is placed on a terrace of a building, a hand wheel 20 is used for rotating a supporting screw 22 to adjust the base 19, so that the base 19 is kept horizontal to a horizontal plane, and a rotary bracelet is taken off to be placed on one side after the base 19 is leveled; spirally mounting a pre-fixing rod 10 on a screw barrel 12, rotating the pre-fixing rod 10 until the bottom of the pre-fixing rod contacts the ground, fixing a lifting device 5 on a screw rod 11, and clamping the top of the pre-fixing rod 10 by using a fixing frame 8 to rotate the pre-fixing rod 10; starting the driving motor 4 to drive the pre-fixing rod 10 to rotate, so that the pre-fixing rod 10 slowly enters the foundation, the driving motor 4 gradually slides downwards along the sliding rod 1 to descend in the gradual descending process of the pre-fixing rod 10, other pre-fixing rods 10 are installed in the same way or sequentially, and the lifting device 5 is removed after the pre-fixing rods 10 are installed; after the pre-fixing rod 10 enters the foundation, the pull rod 13 is driven to move upwards through the pull ring 77, the reinforcing rod 14 is driven to extend outwards from the pre-fixing rod 10 and to be inserted into peripheral soil, and the length of the reinforcing rod 14 is set to be 40-50 cm; inserting the anchor static pressure pile 17 into the pile hole 16 for vertical fixation, installing and fixing a reaction frame 30 of the static pressure pile 17 on a screw rod 11 on a base 19, and applying pressure to the ground by using the reaction force of grabbing the ground by a pre-fixing rod 10 on the base 19 to stop the pressure when the preset depth is reached; after the anchor rod static pressure pile 17 is buried to a preset depth, the pre-fixing rod 10 is taken out, and the base 19 is retracted and recycled for the next use.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (10)
1. The construction device of the anchor rod static pressure pile is characterized by comprising a base (19), wherein a pile hole (16) for installing the static pressure pile (17) is formed in the center of the base (19), and a reaction frame (30) for extruding the static pressure pile (17) is detachably fixed in the middle of the base (19); a plurality of pre-fixing rods (10) inserted into the ground are screwed on the base (19) around the pile hole (16);
the lifting device (5) is detachably mounted on the base (19), the driving motor (4) is arranged on the lifting device (5), and the driving motor (4) is connected with the pre-fixing rod (10) to drive the pre-fixing rod (10) to rotate; the edge of the base (19) is provided with a lifting supporting leg, the lifting supporting leg is supported on the ground to adjust the inclination angle of the base (19), and a level gauge is fixedly arranged on the base (19);
the pre-fixing rod (10) is hollow, a movable pull rod (13) is arranged in the pre-fixing rod, a plurality of reinforcing rods (14) are hinged to the pull rod (13), and one end of each reinforcing rod (14) penetrates out of the pre-fixing rod (10).
2. The apparatus for constructing the anchor static pressure pile according to the claim 1, characterized in that the lifting device (5) comprises a slide bar (1) vertically and detachably mounted on the base (19), a driving motor (4) is slidably mounted on the slide bar (1) through a slide block (2), and an output shaft (6) of the driving motor (4) is connected with the pre-fixing bar (10).
3. The apparatus for constructing a pile according to claim 2, wherein the slide bar (1) of the lifting device (5) comprises two parallel rods, the lifting device (5) further comprising a horizontally arranged cross bar (3); two ends of a cross rod (3) are respectively installed on the sliding rod (1) through sliding blocks (2), a driving motor (4) is fixedly installed in the middle of the cross rod (3), and a fixing frame (8) is installed on an output shaft (6) of the driving motor (4); the periphery of the top of the pre-fixing rod (10) is fixed with a convex block (9), and the convex block (9) is clamped on the fixing frame (8).
4. The anchor rod static pressure pile construction device according to claim 1, characterized in that the circumference of the pre-fixing rod (10) is provided with a through hole corresponding to the reinforcing rod (14), the pull rod (13) is provided with an ear seat, one end of the reinforcing rod (14) is hinged on the ear seat, and the free end of the reinforcing rod (14) is inclined upwards and penetrates out of the through hole of the pre-fixing rod (10); the length of the reinforcing rod (14) is 40cm-50 cm.
5. The apparatus for constructing a static pile of an anchor rod according to claim 4, wherein the free end of the reinforcing rod (14) is sleeved with a protective cap (28), the outer end of the protective cap (28) is positioned outside the pre-fixing rod (10) and is tapered, the inner end of the protective cap (28) is positioned inside the pre-fixing rod (10), and the inner end is provided with a snap ring with a diameter larger than that of the through hole.
6. The apparatus for constructing a static pile of an anchor rod according to claim 4, wherein a limiting piston (15) is fixed at the bottom of the pull rod (13), and the limiting piston (15) is slidably installed in the pre-fixing rod (10); the top of the pull rod (13) is provided with a pull ring (7).
7. The apparatus for constructing a static pile of an anchor rod according to claim 1, wherein a plurality of circular holes are formed in the base (19) at equal intervals around the pile hole (16), a screw cylinder (12) is fixedly arranged in the circular holes, and the pre-fixing rod (10) is installed in the screw cylinder (12) in a threaded manner.
8. The apparatus for constructing a deadpressure pile according to claim 7, wherein screw shafts (11) are fixed to four corners of a square centered on the screw cylinder (12) and the pile hole (16) on the upper surface of the base (19).
9. The apparatus for constructing a rockshaft static pile according to claim 8, wherein the reaction frame (30) is mounted on the screw (11); the reaction frame (30) is provided with a pressurizing pile (31), the pressurizing pile (31) is positioned right above the static pressure pile (17), and the pressurizing pile (31) applies pressure to the static pressure pile (17).
10. The device for constructing the anchor static pressure pile according to the claim 1, characterized in that the lifting legs comprise supporting screws (22) which are in threaded connection with four corners of the base (19), non-slip mats (23) are arranged at the bottoms of the supporting screws (22), a hand wheel (20) is arranged at the top of the supporting screws (22) and used for rotating the supporting screws (22), and the hand wheel (20) is detachably connected with the supporting screws (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120936588.7U CN214695593U (en) | 2021-04-30 | 2021-04-30 | Construction device for anchor rod static pressure pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120936588.7U CN214695593U (en) | 2021-04-30 | 2021-04-30 | Construction device for anchor rod static pressure pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214695593U true CN214695593U (en) | 2021-11-12 |
Family
ID=78535369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120936588.7U Expired - Fee Related CN214695593U (en) | 2021-04-30 | 2021-04-30 | Construction device for anchor rod static pressure pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214695593U (en) |
-
2021
- 2021-04-30 CN CN202120936588.7U patent/CN214695593U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |