CN214993830U - Matching device of hydraulic hammer of ultra-large piling ship - Google Patents
Matching device of hydraulic hammer of ultra-large piling ship Download PDFInfo
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- CN214993830U CN214993830U CN202120367789.XU CN202120367789U CN214993830U CN 214993830 U CN214993830 U CN 214993830U CN 202120367789 U CN202120367789 U CN 202120367789U CN 214993830 U CN214993830 U CN 214993830U
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- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a supporting device of hydraulic hammer of ultra-large pile driving barge, including longkou, hydraulic hammer leading truck, hanging beam, transition pile cap and pile sinking pile cap. The hydraulic hammer guide frame is slidably arranged on the closure through two pairs of closure feet. The hydraulic hammer is arranged on the front side of the hydraulic hammer guide frame through two anchor ears; the hanging beam is connected with the hydraulic hammer through a pin shaft. The transition pile cap comprises a transition pile cap cylinder and a transition anvil, and the transition pile cap cylinder is connected with a bottom flange of the hydraulic hammer through a flange bolt; the outer diameter of the transition anvil is larger than that of the hammer core and is arranged in the transition pile cap barrel; the pile sinking pile cap comprises a pile cap cylinder, an anvil and a pile cap cover plate, wherein the pile cap cylinder is slidably arranged on the closure through a pair of closure feet. When the hammer is lifted, the pile sinking cap and the transition cap are connected by two chains, and when the hammer is used for sinking the pile, the connection between the chains and the pile sinking cap is disconnected. The utility model discloses enable the hydraulic hammer and be applied to on the pile driver ship, satisfy the pile sinking needs of the large-scale stake of marine wind power.
Description
Technical Field
The utility model relates to a supporting device of hydraulic hammer of ultra-large pile driving barge.
Background
Piling operations of single pile foundations, gravity foundations, pile foundation cap foundations, jacket foundations, tripods or multi-foot foundations of wharfs, bridges and offshore wind turbine generator pairs are generally implemented by using a pile-frame piling ship which is provided with auxiliary equipment such as a pile frame, hoisting equipment, a plurality of anchors, a hydraulic system, a diesel engine power generation system and a piling hammer. The pile hanging hook and the pile hammer pulley pair are arranged on a top platform of the pile frame, the pile hammer can move up and down along a rail on the closure, and the pile frame is driven by the large-sized oil cylinder to change the amplitude, so that the pile driving requirements of inclined piles in different angles can be very conveniently met. The pile frame type pile driving ship adopts anchoring positioning, works in coastal or inland river shallow water areas and is dispatched to different construction sites through tugboats. The pile frame type pile driving ship has the advantages of low manufacturing cost, simplicity in operation, high construction efficiency, convenience in maintenance and management and the like.
The pile frame type pile driving ship generally adopts a diesel hammer hung on a dragon mouth to drive the pile. The striking energy of the diesel hammer is 200-300 kj, so that the energy efficiency is low, the pile sinking requirement of the offshore wind power large pile cannot be met, and particularly the pile foundation bearing platform foundation with the pile diameter of 1-3 m cannot be met. Because the energy efficiency of the hydraulic hammer acting on the pile top reaches 80 percent, the striking force and the energy efficiency are far greater than those of a diesel hammer, the multi-pile bearing platform of offshore wind power adopts the hydraulic hammer to sink the pile. At present, large-scale hydraulic hammers are used for hoisting and beating of crane ships. If the pile frame type pile driving ship is adopted to carry out pile sinking construction of offshore wind power, a large hydraulic hammer is required to replace a diesel hammer to be applied to the pile frame type pile driving ship. The hydraulic hammer is different and the diesel hammer, and the hammer block surface of hydraulic hammer does not have the longkou foot, can't directly carry out reasonable linking with the longkou of pile driving ship, and the hydraulic hammer is higher than the diesel hammer to the eccentricity requirement of stake.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and provide a supporting device of hydraulic hammer of extra-large-scale pile driver, it enables the hydraulic hammer and is applied to on the pile driver, satisfies the pile sinking needs of the large-scale stake of marine wind power.
The purpose of the utility model is realized like this: a matching device of a hydraulic hammer of an ultra-large pile driving ship comprises a dragon mouth, the hydraulic hammer, a hydraulic hammer guide frame, a hanging beam, a transition pile cap and a pile sinking pile cap; the keel is fixed in the middle of the front side of a pile frame of the pile driving ship; the hydraulic hammer is a cylinder, the hammer core protrudes out of the bottom surface, a hydraulic hammer lifting lug is arranged in the center of the top surface of the hydraulic hammer, and two annular grooves are formed in the outer surface of the hydraulic hammer; wherein,
the hydraulic hammer guide frame is of a quadrangular prism structure, two pairs of dragon mouth feet are arranged on the back surface of the hydraulic hammer guide frame at intervals, the hydraulic hammer guide frame can be slidably arranged on a dragon mouth through the two pairs of dragon mouth feet, two anchor ears are arranged on the front surface of the hydraulic hammer guide frame corresponding to two annular grooves on the hydraulic hammer, and the hydraulic hammer is arranged on the hydraulic hammer guide frame through the two anchor ears;
the middle part of the bottom surface of the hanging beam is provided with a pair of hanging beam lifting lugs for clamping the hydraulic hammer lifting lugs of the hydraulic hammer and is connected with the hydraulic hammer lifting lugs through a pin shaft; two supporting feet are respectively arranged on two sides of a pair of lifting lugs of the lifting beam on the bottom surface of the lifting beam, and a lifting beam pulley for hanging a steel wire rope of the lifting hammer is arranged on the lifting beam;
the transition pile cap comprises a transition pile cap cylinder and a transition anvil; a circle of lower limiting ring is arranged at the bottom of the inner wall of the transition pile cap cylinder, and a pair of upper hanging lugs is fixed on the outer surface of the transition pile cap cylinder in a centrosymmetric manner; the top of the transition pile cap cylinder is provided with a flange and is connected with the bottom flange of the hydraulic hammer through a flange bolt, so that the hammer core of the hydraulic hammer is positioned at the upper part of the inner cavity of the transition pile cap cylinder; the outer diameter of the transition anvil is larger than the outer diameter of the hammer core and is matched with the inner diameter of the lower limiting ring, the top of the outer surface of the transition anvil is provided with a circle of upper limiting ring with the outer diameter matched with the inner diameter of the transition pile cap cylinder, and the transition anvil is arranged in the inner cavity of the transition pile cap cylinder and the lower part of the transition anvil is exposed out of the bottom surface of the transition pile cap cylinder through the limiting of the upper limiting ring and the lower limiting ring;
the pile sinking pile cap comprises a pile cap cylinder, an anvil and a pile cap cover plate, wherein a pair of tap feet are arranged on the back surface of the pile cap cylinder, so that the pile sinking pile cap can be slidably arranged on the tap through the pair of tap feet, and the middle part of the inner wall of the pile cap cylinder is divided into an upper pile cap cylinder and a lower pile cap cylinder through a circle of convex ring; the anvil is arranged in the upper pile cap cylinder; the pile cap cover plate is fixed at the top of the pile cap cylinder, a transition anvil through hole is formed in the center of the pile cap cover plate, and a pair of lower lugs is arranged on the pile cap cover plate in a central symmetry mode on the periphery of the transition anvil through hole; when the hammer is lifted, the two chains are connected between the pair of lower lugs of the pile sinking cap and the pair of upper lugs of the transition cap in a one-to-one correspondence manner, so that the hydraulic hammer, the transition cap and the pile sinking cap are sleeved together to form a pile, and when the pile is sunk by the hammer, the chains are disconnected from the pile sinking cap.
In the matching device of the hydraulic hammer of the ultra-large pile driving barge, a friction plate is further arranged between the inner surface of the hoop and the outer surface of the hydraulic hammer.
The utility model discloses a supporting device of hydraulic hammer of ultra-large pile driving barge has following characteristics:
1) a hanging beam is arranged at the top of the hydraulic hammer and used for lifting and descending the hydraulic hammer;
2) a hydraulic hammer guide frame is arranged between the closure and the hydraulic hammer, so that the hydraulic hammer is connected with the closure by two pairs of closure feet on the hydraulic hammer guide frame and can be lifted in parallel with the axis of the pile frame, and the verticality or inclination of the pile sinking is ensured;
3) the hydraulic hammer is separated from the pile cap of the pile sinking and then the pile is sunk, so that the hydraulic hammer is prevented from slipping down along with the steel pipe pile when the pile slips, and the steel wire rope of the hanging hammer is prevented from being damaged;
4) the bottom of the hydraulic hammer is provided with the transition pile cap, the diameter of the transition anvil arranged in the transition pile cap is larger than the diameter of the hammer core and the diameter of the top end of the anvil of the pile sinking pile cap, so that the phenomenon of offset impact when the hammer core of the hydraulic hammer hammers the anvil in the pile sinking pile cap after the hydraulic hammer is separated from the pile sinking pile cap is avoided.
Drawings
Fig. 1 is an axonometric view of a device for matching a hydraulic hammer of a pile driving barge according to the invention;
fig. 2 is a front view of a matching device of a hydraulic hammer of the ultra-large pile driving barge according to the invention;
FIG. 3 is a side view of FIG. 2;
fig. 4 is a view from a-a in fig. 3.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 4, the device for matching a hydraulic hammer of a very large piling ship of the present invention includes a keel 1, a hydraulic hammer 2, a hydraulic hammer guide frame 3, a hanging beam 4, a transition pile cap 5 and a pile sinking pile cap 6.
The dragon mouth 1 is fixed in the middle of the front of a pile frame of the pile driving ship.
The hydraulic hammer 2 is a cylinder and the hammer core 20 protrudes from the bottom surface, the top surface center of the hydraulic hammer 2 is provided with a hydraulic hammer lug 21, and the outer surface of the hydraulic hammer 2 is provided with two annular grooves 22.
The hydraulic hammer guide frame 3 is of a quadrangular prism structure, two pairs of dragon mouth feet 30 are arranged on the back surface of the hydraulic hammer guide frame at intervals, so that the hydraulic hammer guide frame 3 can be slidably arranged on a dragon mouth 1 through the two pairs of dragon mouth feet 30, two anchor ears 31 are arranged on the front surface of the hydraulic hammer guide frame 3 corresponding to two ring grooves 22 on the hydraulic hammer 2, and the hydraulic hammer 2 is arranged on the hydraulic hammer guide frame 3 through the two anchor ears 31; friction plates 32 are further arranged between the inner surfaces of the two anchor ears 31 and the outer surface of the hydraulic hammer 2.
The hanging beam 4 is a box body structural beam, the middle part of the bottom surface of the hanging beam 4 is provided with a pair of hanging beam lifting lugs 41, and the pair of hanging beam lifting lugs 41 are clamped at two sides of the hydraulic hammer lifting lug 21 and are connected with the hydraulic hammer lifting lug connecting 21 through pin shafts; two supporting feet 42 are respectively arranged on two sides of a pair of hanging beam lifting lugs 41 on the bottom surface of the hanging beam 4, and a hanging beam pulley 43 for hanging a steel wire rope of a hanging hammer is also arranged on the hanging beam 4.
The transition pile cap 5 comprises a transition pile cap cylinder 51 and a transition anvil 52; the bottom of the inner wall of the transition pile cap cylinder 51 is provided with a circle of lower limiting rings 511, a pair of upper lugs 512 is fixed on the outer surface of the transition pile cap cylinder 51 in a central symmetry manner, the top of the transition pile cap cylinder 51 is provided with a flange and is connected with a bottom flange of the hydraulic hammer 2 through a flange bolt, so that the hammer core 20 of the hydraulic hammer 2 is positioned at the upper part of the inner cavity of the transition pile cap cylinder 51; the outer diameter of the transition anvil 52 is larger than the outer diameter of the hammer core 20 and is matched with the inner diameter of the lower limiting ring 511, the top of the outer surface of the transition anvil 52 is provided with a circle of upper limiting ring 521 the outer diameter of which is matched with the inner diameter of the transition pile cap cylinder 51, the transition anvil 52 is installed in the inner cavity of the transition pile cap cylinder 51, and the lower part of the transition anvil 52 is exposed out of the bottom surface of the transition pile cap cylinder 51 through the limiting of the upper limiting ring 521 and the lower limiting ring 511.
The pile sinking pile cap 6 comprises a pile cap cylinder 61 and a pile cap cover plate 62 which is arranged on the top of the pile cap cylinder 61 through a screw, wherein the back of the pile cap cylinder 61 is provided with a pair of faucet feet 60, so that the pile sinking pile cap 6 can be slidably arranged on the faucet 1 through the pair of faucet feet 60, the middle part of the inner wall of the pile cap cylinder 61 is divided into an upper pile cap cylinder and a lower pile cap cylinder through a circle of convex ring 611, and an anvil 60 is arranged in the upper pile cap cylinder; a transition anvil through hole is formed in the center of the pile cap cover plate 62, and a pair of lower hanging lugs 612 is symmetrically arranged on the periphery of the transition anvil through hole on the pile cap cover plate 62; when the hammer is lifted, the two chains 50 are connected between a pair of lower lugs 612 of the pile sinking cap 6 and a pair of upper lugs 512 of the transition pile cap 5 in a one-to-one correspondence manner, so that the hydraulic hammer 2, the transition pile cap 5 and the pile sinking cap 6 are sleeved together for pile driving, and when the pile is driven to sink, the two chains 50 are disconnected from the pile sinking cap 6, so that the pile sinking cap 6 is independently sleeved at the top of a pile to be sunk.
In order to use the hydraulic hammer with the model of S-800 on a pile driver ship, the utility model discloses make following improvement:
1) a hanging beam 4 for lifting and lowering the hydraulic hammer 2 is arranged at the top of the hydraulic hammer; the hydraulic hammer 2 is lifted and lowered on the pile frame through a lifting hammer winch on the pile driving vessel, a pulley arranged on a lifting hammer platform at the top of the pile frame and a lifting beam pulley 43 arranged on a lifting beam, so that the hydraulic hammer 2 is lifted and lowered on the pile frame. Because the hydraulic hammer 2 is hinged with the hanging beam 4, the bottom surface of the hanging beam 4 is provided with four supporting feet 42, so that the hanging beam 4 can be prevented from toppling over and being placed on the top surface of the hydraulic hammer 2 after the steel wire rope of the hanging hammer is loosened during pile sinking;
2) a hydraulic hammer guide frame 3 for ensuring that the hydraulic hammer 2 is parallel to the axis of the pile frame and ensuring the verticality or inclination of the pile sinking is arranged between the closure 1 and the hydraulic hammer 2; the back of the hydraulic hammer guide frame 3 is provided with two pairs of dragon mouth feet 30, two hoops 31 are respectively arranged corresponding to the two annular grooves 22 on the hydraulic hammer 2, and the two hoops 31 are correspondingly arranged in the two annular grooves 22 of the hydraulic hammer 2 one by one, so that the hydraulic hammer 2 is connected with the dragon mouth 1 by virtue of the two pairs of dragon mouth feet 30 on the hydraulic hammer guide frame 3; during piling operation, the hydraulic hammer 2 slides up and down along the dragon mouth 1 through the hydraulic hammer guide frame 3. Because the depth of the ring groove 22 on the hydraulic hammer 2 is only 20mm, in order to prevent the anchor ear 31 from loosening, a friction plate 32 is also arranged between the inner surfaces of the two anchor ears 31 and the outer surface of the hydraulic hammer 2, and a 6mm gap is reserved between the contact surfaces of the front half anchor ear and the rear half anchor ear of each anchor ear 31, so that pre-tightening is facilitated.
3) According to the delivery requirement of the hydraulic hammer, the hydraulic hammer 2 and the pile sinking cap 6 are connected together through flange bolts, and the hydraulic hammer 2 sleeves piles with the pile sinking cap 6 and carries out pile sinking. The pile slipping phenomenon usually occurs during offshore wind power pile sinking, steel pipe piles suddenly and rapidly sink during pile slipping to cause the steel pipe piles to topple over, the steel pipe pile hanging hammer steel wire ropes and the pile frame are damaged, the hydraulic hammer 2 and the pile sinking cap 6 are separated from each other, when pile slipping occurs, the pile sinking cap 6 slips down along with the steel pipe piles, the steel pipe piles can be prevented from toppling over by the aid of the spigot legs 60 on the back of the pile sinking cap 6, and the steel pipe piles are prevented from toppling over due to the fact that the hydraulic hammer 2 does not slip down along with the steel pipe piles, and the steel pipe pile hanging hammer steel wire ropes are prevented from being damaged.
4) The bottom of the hydraulic hammer is provided with a transition pile cap 5 for preventing slipping and eccentric impact of a hammer core: after the hydraulic hammer 2 and the pile sinking cap 6 are separated, the hammer core 20 of the hydraulic hammer 2 can be caused to generate offset impact when hammering the anvil 60 in the pile sinking cap 6 (the angle between the hammer and the pile is required to be not more than 1: 60 in the specification of the hydraulic hammer), therefore, the transition cap 5 is additionally arranged at the bottom of the hydraulic hammer 2, the transition cap 5 is connected with the hydraulic hammer 2 through a flange bolt, and the diameter of the transition anvil 52 arranged in the transition cap 5 is not only larger than the outer diameter of the hammer core 20, but also larger than the diameter of the top end of the anvil 60 of the pile sinking cap 6, so that the hammer core 20 is ensured not to be offset impact. The transition pile cap 5 and the pile sinking pile cap 6 are connected through two chains 50, when the hammer is lifted, the hydraulic hammer 2, the transition pile cap 5 and the pile sinking pile cap 6 are lifted together to sleeve the pile, the chains 50 are untied after the pile is sleeved, and when the pile is sunk, the energy of the hydraulic hammer is transferred through the hammer core 20, the transition anvil 52 and the anvil 60 of the hydraulic hammer 2 and then is applied to the top of the steel pipe pile to sink the pile.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (2)
1. A matching device of a hydraulic hammer of an ultra-large pile driving ship comprises a dragon mouth, the hydraulic hammer, a hydraulic hammer guide frame, a hanging beam, a transition pile cap and a pile sinking pile cap; the keel is fixed in the middle of the front side of a pile frame of the pile driving ship; the hydraulic hammer is a cylinder, the hammer core protrudes out of the bottom surface, a hydraulic hammer lifting lug is arranged in the center of the top surface of the hydraulic hammer, and two annular grooves are formed in the outer surface of the hydraulic hammer; it is characterized in that the preparation method is characterized in that,
the hydraulic hammer guide frame is of a quadrangular prism structure, two pairs of dragon mouth feet are arranged on the back surface of the hydraulic hammer guide frame at intervals, the hydraulic hammer guide frame can be slidably arranged on a dragon mouth through the two pairs of dragon mouth feet, two anchor ears are arranged on the front surface of the hydraulic hammer guide frame corresponding to two annular grooves on the hydraulic hammer, and the hydraulic hammer is arranged on the hydraulic hammer guide frame through the two anchor ears;
the middle part of the bottom surface of the hanging beam is provided with a pair of hanging beam lifting lugs for clamping the hydraulic hammer lifting lugs of the hydraulic hammer and is connected with the hydraulic hammer lifting lugs through a pin shaft; two supporting feet are respectively arranged on two sides of a pair of lifting lugs of the lifting beam on the bottom surface of the lifting beam, and a lifting beam pulley for hanging a steel wire rope of the lifting hammer is arranged on the lifting beam;
the transition pile cap comprises a transition pile cap cylinder and a transition anvil; a circle of lower limiting ring is arranged at the bottom of the inner wall of the transition pile cap cylinder, and a pair of upper hanging lugs is fixed on the outer surface of the transition pile cap cylinder in a centrosymmetric manner; the top of the transition pile cap cylinder is provided with a flange and is connected with the bottom flange of the hydraulic hammer through a flange bolt, so that the hammer core of the hydraulic hammer is positioned at the upper part of the inner cavity of the transition pile cap cylinder; the outer diameter of the transition anvil is larger than the outer diameter of the hammer core and is matched with the inner diameter of the lower limiting ring, the top of the outer surface of the transition anvil is provided with a circle of upper limiting ring with the outer diameter matched with the inner diameter of the transition pile cap cylinder, and the transition anvil is arranged in the inner cavity of the transition pile cap cylinder and the lower part of the transition anvil is exposed out of the bottom surface of the transition pile cap cylinder through the limiting of the upper limiting ring and the lower limiting ring;
the pile sinking pile cap comprises a pile cap cylinder, an anvil and a pile cap cover plate, wherein a pair of tap feet are arranged on the back surface of the pile cap cylinder, so that the pile sinking pile cap can be slidably arranged on the tap through the pair of tap feet, and the middle part of the inner wall of the pile cap cylinder is divided into an upper pile cap cylinder and a lower pile cap cylinder through a circle of convex ring; the anvil is arranged in the upper pile cap cylinder; the pile cap cover plate is fixed at the top of the pile cap cylinder, a transition anvil through hole is formed in the center of the pile cap cover plate, and a pair of lower lugs is arranged on the pile cap cover plate in a central symmetry mode on the periphery of the transition anvil through hole; when the hammer is lifted, the two chains are connected between the pair of lower lugs of the pile sinking cap and the pair of upper lugs of the transition cap in a one-to-one correspondence manner, so that the hydraulic hammer, the transition cap and the pile sinking cap are sleeved together to form a pile, and when the pile is sunk by the hammer, the chains are disconnected from the pile sinking cap.
2. The device for matching a hydraulic hammer of a very large pile driving barge according to claim 1, wherein a friction plate is further arranged between the inner surface of the hoop and the outer surface of the hydraulic hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367789.XU CN214993830U (en) | 2021-02-09 | 2021-02-09 | Matching device of hydraulic hammer of ultra-large piling ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367789.XU CN214993830U (en) | 2021-02-09 | 2021-02-09 | Matching device of hydraulic hammer of ultra-large piling ship |
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| Publication Number | Publication Date |
|---|---|
| CN214993830U true CN214993830U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120367789.XU Active CN214993830U (en) | 2021-02-09 | 2021-02-09 | Matching device of hydraulic hammer of ultra-large piling ship |
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| CN (1) | CN214993830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753364A (en) * | 2022-04-19 | 2022-07-15 | 浙江永安工程机械有限公司 | Hammer core lifting structure with safety function |
-
2021
- 2021-02-09 CN CN202120367789.XU patent/CN214993830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753364A (en) * | 2022-04-19 | 2022-07-15 | 浙江永安工程机械有限公司 | Hammer core lifting structure with safety function |
| CN114753364B (en) * | 2022-04-19 | 2024-05-07 | 浙江永安工程机械有限公司 | Hammer core lifting structure of safety insurance |
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Inventor after: Chen Jianzhang Inventor after: Lu Yifeng Inventor after: Hu Chunbao Inventor after: Huang Chao Inventor after: Zhu Yazhou Inventor after: Shen Dong Inventor before: Chen Jianzhang Inventor before: Lu Yifeng Inventor before: Hu Chunbao Inventor before: Huang Chao Inventor before: Zhu Yazhou Inventor before: Shen Dong |
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| CB03 | Change of inventor or designer information |