CN111549727B - Dam protection device for environment-friendly water conservancy project and installation method - Google Patents
Dam protection device for environment-friendly water conservancy project and installation method Download PDFInfo
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- CN111549727B CN111549727B CN202010503506.XA CN202010503506A CN111549727B CN 111549727 B CN111549727 B CN 111549727B CN 202010503506 A CN202010503506 A CN 202010503506A CN 111549727 B CN111549727 B CN 111549727B
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- rod
- vertical shaft
- dam
- cross rod
- ground anchor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a dam protection device for an environment-friendly water utilization project and an installation method, wherein the dam protection device comprises a positioning rod poured on the top of a dam, wherein part of the positioning rod is poured inside the dam, the pouring depth is more than 60cm, part of the positioning rod is upwards exposed outside the dam, a cross rod is matched with the positioning rod, the cross rod can rotate along the positioning rod, a limiting nut is screwed in the upper end of the positioning rod, the limiting nut is limited above the cross rod, and the rotation resistance of the cross rod is increased along with the continuous downward rotation of the limiting nut; the product can form anti-collision protection on the inner side of the dam.
Description
Technical Field
The invention relates to a dam protection device for an environment-friendly water utilization project and an installation method.
Background
In environmental protection engineering and hydraulic engineering, dykes and dams often need to be built, and dykes and dams in the environmental protection engineering mainly play the effect that prevents soil erosion and water loss, and among the hydraulic engineering, dykes and dams mainly play the effect of flood control.
The water conservancy project is a very common mode of transportation, and the ship is at the in-process of navigation, especially to comparatively narrow channel, and the contact accident of ship and dykes and dams can take place often, and the back of contact, because the dykes and dams are the mixed structure of concrete and stone, consequently can cause the damage of ship. And the collision strength of the ship is large, which can cause the structural damage of the dam, lead the flood fighting capability of the dam to be reduced and have the risk of collapse.
Therefore, the dam protection device for the environment-friendly hydraulic engineering and the installation method thereof are designed, wherein the anti-collision protection can be formed on the inner side of the dam.
Disclosure of Invention
The invention aims to provide a dam protection device for environment-friendly hydraulic engineering and an installation method, wherein the dam protection device can form anti-collision protection on the inner side of a dam.
In order to solve the problems, the invention adopts the following technical scheme:
a dam protection device for environment-friendly water conservancy projects comprises a positioning rod poured on the top of a dam, wherein part of the positioning rod is poured inside the dam, the pouring depth is more than 60cm, part of the positioning rod is upwards exposed outside the dam, a cross rod is matched with the positioning rod, the cross rod can rotate along the positioning rod, a limiting nut is screwed in the upper end of the positioning rod, the limiting nut is limited above the cross rod, and the rotating resistance of the cross rod is increased along with the continuous downward rotation of the limiting nut; a vertical shaft is assembled through the cross rod, a through groove for penetrating through the cross rod is formed in the outer portion of the vertical shaft, a first limiting sleeve is arranged on the right side of the vertical shaft on the cross rod, the first limiting sleeve and the cross rod are fixed through screws, a spring is sleeved on the cross rod and acts between the first limiting sleeve and the vertical shaft, a second limiting sleeve is arranged on the cross rod and fixed through screws, and the second limiting sleeve is limited on the left side of the vertical shaft; the energy-absorbing device is characterized in that a plurality of buffering energy-absorbing devices are arranged on the vertical shaft, a ground anchor rod is arranged at the lower end of the vertical shaft, the lower end of the ground anchor rod is driven into a river bed, a first spring is welded between the ground anchor rod and the vertical shaft, and the vertical shaft and the ground anchor rod are disconnected under the action of the first spring.
Preferably, the outer part of the ground anchor rod is injection-molded to form a conical limiting block; the limiting block has two functions, one is to limit the driving depth of the ground anchor rod when the ground anchor rod is driven downwards. And the second point is that the limiting block is conical, and after the limiting block is inserted into the riverbed, the limiting block is matched with the riverbed, so that the stability of the ground anchor rod after being driven in is improved.
Preferably, the buffering and energy absorbing device comprises an inner tube, a plurality of connecting ribs are annularly arranged outside the inner tube, a connecting rod is vertically inserted into the top of each connecting rib, the connecting ribs and the connecting rods are fixed through screws, the buffering and energy absorbing device further comprises a waste tire, the waste tire and the inner tube are coaxial, the upper end and the lower end of each connecting rod penetrate through the waste tire, nuts are matched after the two ends of each connecting rod penetrate through the waste tire, and the nuts are screwed towards the direction of the waste tire and then abut against the waste tire; the vertical shaft penetrates through the inner pipe, and the inner pipe and the vertical shaft are fixed through screws; in the structure, the waste tires are obtained in a recycling mode, and the effect of waste utilization is achieved. And the waste tire is replaceable, and when the waste tire is replaced, the waste tire can be detached only by unscrewing the nut and then taking out the connecting rod.
Preferably, an inner lining ring made of rubber is arranged on the inner side of the waste tire, and the inner lining ring is attached to the inner wall of the waste tire; the inner lining ring is mainly used for being matched with the waste tire to buffer and absorb energy, and the deformation resistance of the waste tire is improved.
Preferably, the lower end of the connecting rod is in threaded connection with a floating barrel, the floating barrel is made of plastic materials and is provided with a hollow and sealed inner cavity; in the case of a region with a large depth, if complete protection needs to be ensured, a plurality of buffering energy absorption devices are needed, and the cost is increased. After the structure is adopted, the lowest buffering energy-absorbing device is matched with the plurality of floating barrels, so that the lowest buffering energy-absorbing device is submerged in water, the upper buffering energy-absorbing devices float on the water surface after being supported, and the matching position of the buffering energy-absorbing device can meet the changing requirement when the water level changes. The protection is always formed on the outer side of the dam, and certainly, after the structure is adopted, the screws between the inner pipe and the vertical shaft need to be unscrewed, so that the inner pipe can slide up and down along the vertical shaft, and meanwhile, a gap more than 1mm is kept between the inner pipe and the vertical shaft, and the sliding is prevented from being blocked.
Preferably, the vertical length of the through groove is greater than the diameter of the cross rod, and the cross rod can slide up and down along the through groove; when the vertical shaft is collided, the deformation can not only be towards the direction of the dam, but also can be along the route (namely forwards or backwards), at the moment, if the vertical height of the through groove and the cross rod 2 are just matched, the cross rod has no space for vertical displacement, so that the upper end of the vertical shaft is locked even if the first spring below the vertical shaft provides elastic support, and the energy absorption effect is reduced. After the through groove with a large relative size is adopted, the upper end and the lower end of the vertical shaft can be buffered and absorbed by moving.
A method for installing a dam protection device for environment-friendly water conservancy projects comprises the following steps:
firstly, assembling a buffering energy-absorbing device on land;
secondly, when the dam is poured, the positioning rod is downwards inserted into the dam, and the positioning rod and the dam are poured and fixed;
thirdly, driving the ground anchor rod downwards into the river bed through a pile driver or other pile driving equipment, wherein the upper end of the ground anchor rod is partially exposed above the river bed after the ground anchor rod is driven into the river bed;
fourthly, sleeving the first spring in the ground anchor rod, fixing the ground anchor rod through electric welding, sleeving the vertical shaft in the first spring, and fixing the vertical shaft in the first spring through the electric welding;
assembling the buffering energy absorption device on the vertical shaft;
sixthly, assembling the cross rod and the positioning rod, pulling the vertical shaft forwards or backwards to deviate the cross rod, mounting the first limiting sleeve and the spring on the cross rod, pulling the vertical shaft leftwards, rebounding the vertical shaft by means of the first spring, enabling the cross rod to penetrate through the through groove, assembling the second limiting sleeve for limiting, and completing assembling work.
The invention has the beneficial effects that:
1) the integral structure of the product is detachable, and the product can be maintained and replaced only aiming at the damaged part in the later period;
2) in the product, the number of the buffering energy-absorbing devices can be flexibly adjusted, and the buffering energy-absorbing devices can deform and absorb energy after bearing the impact of a ship, can rotate along a vertical shaft, play a ship guiding mode and further alleviate the impact force of the ship;
3) in the product, the lower end of the vertical shaft is supported by the first spring, so that after the elastic buffer device bears impact, the vertical shaft can be bent and is matched with the first spring for energy absorption;
4) the product is distributed in a plurality of equidistant modes, and energy is absorbed through a plurality of matching modes, so that the guiding effect is better, and the anti-collision capacity is stronger;
5) the product adopts the waste tires as energy-absorbing materials, and plays a role in waste utilization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a cushioning energy-absorbing device;
FIG. 3 is a top view of a cushioning energy-absorbing device;
fig. 4 is a schematic view of the engagement of the cross bar and the vertical shaft.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-4.
Example 1
A dam protection device for an environment-friendly water conservancy project comprises a positioning rod 1 poured on the top of a dam, wherein part of the positioning rod 1 is poured inside the dam, the pouring depth is more than 60cm, part of the positioning rod 1 is upwards exposed outside the dam, a cross rod 2 is matched with the positioning rod 1, the cross rod 2 can rotate along the positioning rod 1, a limit nut 101 is screwed into the upper end of the positioning rod 1 and is limited above the cross rod 2, and the rotation resistance of the cross rod 2 is increased along with the continuous downward rotation of the limit nut 101; a vertical shaft 3 is assembled through the cross rod 2, a through groove 301 for penetrating through the cross rod 2 is formed in the outer portion of the vertical shaft 3, a first limiting sleeve 201 is arranged on the cross rod 2 and located on the right side of the vertical shaft 3, the first limiting sleeve 201 and the cross rod 2 are fixed through screws, a spring 4 is sleeved on the cross rod 2, the spring 4 acts between the first limiting sleeve 201 and the vertical shaft 3, a second limiting sleeve 202 is arranged on the cross rod 2, the second limiting sleeve 202 and the cross rod 2 are fixed through screws, and the second limiting sleeve 202 is limited on the left side of the vertical shaft 3; the vertical shaft 3 is provided with a plurality of buffering energy absorption devices 5, the lower end of the vertical shaft 3 is provided with a ground anchor rod 6, the lower end of the ground anchor rod 6 is driven into a river bed, a first spring 7 is welded between the ground anchor rod 6 and the vertical shaft 3, and under the action of the first spring 7, the vertical shaft 3 is disconnected with the ground anchor rod 6.
Example 2
A conical limiting block 601 is formed by injection molding on the outer part of the ground anchor rod 6; the stopper 601 serves to limit the driving depth of the anchor 6 when the anchor 6 is driven downward. Secondly, the limiting block 601 is conical and is matched with the riverbed after being inserted into the riverbed, so that the stability of the anchor rod 6 after being driven in is improved.
Example 3
The buffering energy absorption device 5 comprises an inner pipe 501, a plurality of connecting ribs 502 are annularly arranged outside the inner pipe 501, a connecting rod 503 is vertically inserted into the top of each connecting rib 502 in a penetrating manner, the connecting ribs 502 and the connecting rods 503 are fixed by screws, the buffering energy absorption device also comprises a waste tire 504, the waste tire 504 and the inner pipe 501 are coaxial, the upper end and the lower end of each connecting rod 503 penetrate through the waste tire 504, nuts 505 are matched after the two ends of each connecting rod 503 penetrate through the waste tire 504, and the nuts 505 are screwed towards the direction of the waste tire 504 to abut against the waste tire 504; the vertical shaft 3 penetrates through the inner pipe 501, and the inner pipe 501 and the vertical shaft 3 are fixed through screws; in the structure, the waste tires 504 are obtained in a recycling mode, and the effect of waste utilization is achieved. And the waste tire 504 is replaceable, and when the waste tire is replaced, the waste tire can be detached only by loosening the nut and then taking out the connecting rod.
Example 4
An inner lining ring 506 made of rubber is arranged on the inner side of the waste tire 504, and the inner lining ring 506 is attached to the inner wall of the waste tire 504; the inner lining ring 506 is mainly used for buffering and absorbing energy in cooperation with the waste tire 504, so that the deformation resistance of the waste tire 504 is improved.
Example 5
The lower end of the connecting rod 503 is in threaded connection with a floating barrel 507, the floating barrel 507 is made of plastic materials and is provided with a hollow and sealed inner cavity; in the case of a region with a large depth, if complete protection needs to be ensured, a plurality of energy absorption and buffering devices 5 are needed, and the cost is increased. After the structure is adopted, the lowest buffering energy-absorbing device 5 is matched with the plurality of floating barrels 507, so that the lowest buffering energy-absorbing device 5 is submerged in water, the upper buffering energy-absorbing devices 5 float on the water surface after being supported, and the matching position of the buffering energy-absorbing devices 5 can meet the change requirement when the water level changes. Protection is always formed on the outer side of the dam, and after the structure is adopted, the screws between the inner pipe 501 and the vertical shaft 3 need to be loosened, so that the inner pipe 501 can slide up and down along the vertical shaft 3, and meanwhile, a gap of more than 1mm is kept between the inner pipe 501 and the vertical shaft 3, and the situation that clamping stagnation occurs in sliding is avoided.
Example 6
The vertical length of the through groove 301 is greater than the diameter of the cross rod 2, and the cross rod 2 can slide up and down along the through groove 301; when the vertical shaft 3 is collided, the deformation will not only be towards the direction of the dam, but also can be along the route (i.e. forwards or backwards), at this time, if the vertical height of the through groove 301 and the cross bar 2 are just matched, then the cross bar 2 has no space for vertical displacement, so that even if the first spring below the vertical shaft 3 provides elastic support, the upper end of the vertical shaft 3 is locked, and the energy absorption effect is reduced. After the through groove 301 with a relatively large size is adopted, the upper end and the lower end of the vertical shaft 3 can be buffered and absorbed by moving.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a dykes and dams protector for environmental protection water conservancy project which characterized in that: the positioning device comprises a positioning rod (1) poured at the top of a dam, wherein the local part of the positioning rod (1) is poured inside the dam, the pouring depth is more than 60cm, the local part of the positioning rod (1) is upwards exposed outside the dam, a cross rod (2) is matched with the positioning rod (1), the cross rod (2) can rotate along the positioning rod (1), a limiting nut (101) is screwed into the upper end of the positioning rod (1), the limiting nut is limited above the cross rod (2), and the rotating resistance of the cross rod (2) is increased along with the continuous downward screwing of the limiting nut (101); a vertical shaft (3) is assembled through the cross rod (2), a through groove (301) which penetrates through the cross rod (2) is formed in the outer portion of the vertical shaft (3), a first limiting sleeve (201) is arranged on the right side of the vertical shaft (3) on the cross rod (2), the first limiting sleeve (201) and the cross rod (2) are fixed through screws, a spring (4) is sleeved on the cross rod (2), the spring (4) acts between the first limiting sleeve (201) and the vertical shaft (3), a second limiting sleeve (202) is arranged on the cross rod (2), the second limiting sleeve (202) and the cross rod (2) are fixed through screws, and the second limiting sleeve (202) is limited on the left side of the vertical shaft (3); the river bed energy-absorbing device is characterized in that a plurality of buffering energy-absorbing devices (5) are arranged on the vertical shaft (3), a ground anchor rod (6) is arranged at the lower end of the vertical shaft (3), the lower end of the ground anchor rod (6) is driven into a river bed, a first spring (7) is welded between the ground anchor rod (6) and the vertical shaft (3), the vertical shaft (3) and the ground anchor rod (6) are disconnected under the action of the first spring (7), each buffering energy-absorbing device (5) comprises an inner pipe (501), a plurality of connecting ribs (502) are annularly arranged outside the inner pipe (501), a connecting rod (503) is vertically inserted in the top of each connecting rib (502), the connecting ribs (502) and the connecting rod (503) are fixed through screws, the waste tire (504) is coaxial with the inner pipe (501), and the upper end and the lower end of each connecting rod (503) penetrate through the waste tire (504), nuts (505) are matched at two ends of the connecting rod (503) after penetrating through the waste tires (504), and the nuts (505) are screwed towards the direction of the waste tires (504) and then abut against the waste tires (504); vertical axis (3) pass inner tube (501), inner tube (501) with screw fixation between vertical axis (3) the lower extreme threaded connection of connecting rod (503) has a floating bucket (507), floating bucket (507) are the plastics material, and it has a cavity and sealed inner chamber, the vertical length that leads to groove (301) is greater than the diameter of horizontal pole (2), horizontal pole (2) can slide from top to bottom along leading to groove (301).
2. An embankment protection device for environmental protection hydraulic engineering according to claim 1, wherein: the outer portion of the ground anchor rod (6) is molded to form a conical limiting block (601).
3. An embankment protection device for environmental protection hydraulic engineering according to claim 1, wherein: an inner lining ring (506) made of rubber is arranged on the inner side of the waste tire (504), and the inner lining ring (506) is attached to the inner wall of the waste tire (504).
4. An installation method of an embankment protection device for environmental protection hydraulic engineering according to any one of claims 1 to 3, wherein: the method comprises the following steps:
firstly, assembling the buffering energy absorption device on land;
then when the dam is poured, the positioning rod is downwards inserted into the dam, and the positioning rod and the dam are poured and fixed;
then, a ground anchor rod is driven downwards into the river bed through a pile driver or other pile driving equipment, and after the ground anchor rod is driven, the upper end of the ground anchor rod is partially exposed above the river bed;
then the first spring is sleeved in the ground anchor rod and is fixed by electric welding, and then the vertical shaft is sleeved in the first spring and is also fixed by the electric welding mode;
assembling the buffering energy absorption device on a vertical shaft;
the assembling of the transverse rod and the positioning rod is completed, the vertical shaft is pulled forwards or backwards, the vertical shaft and the transverse rod deviate at the moment, then the first limiting sleeve and the spring are installed on the transverse rod, the vertical shaft is pulled leftwards, the vertical shaft rebounds with the help of the first spring, the transverse rod penetrates through the through groove, then the second limiting sleeve is assembled for limiting, and the assembling work is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503506.XA CN111549727B (en) | 2020-06-05 | 2020-06-05 | Dam protection device for environment-friendly water conservancy project and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503506.XA CN111549727B (en) | 2020-06-05 | 2020-06-05 | Dam protection device for environment-friendly water conservancy project and installation method |
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| Publication Number | Publication Date |
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| CN111549727A CN111549727A (en) | 2020-08-18 |
| CN111549727B true CN111549727B (en) | 2021-06-22 |
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| CN202010503506.XA Expired - Fee Related CN111549727B (en) | 2020-06-05 | 2020-06-05 | Dam protection device for environment-friendly water conservancy project and installation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113005990A (en) * | 2021-02-07 | 2021-06-22 | 陈海伶 | High strength bank protection protector for hydraulic engineering |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1118005U (en) * | 2014-05-14 | 2014-07-28 | Rafael José GARCÍA CABRERA | Rotary defense for springs (Machine-translation by Google Translate, not legally binding) |
| CN108239967A (en) * | 2018-03-27 | 2018-07-03 | 成都凌凌漆科技有限公司 | A kind of hydraulic engineering dykes and dams anti-collision protection structure |
| CN208777267U (en) * | 2018-08-24 | 2019-04-23 | 臧秀荣 | A kind of hydraulic engineering dykes and dams anti-collision structure |
| KR20190131700A (en) * | 2018-05-17 | 2019-11-27 | 삼성중공업 주식회사 | Fender |
-
2020
- 2020-06-05 CN CN202010503506.XA patent/CN111549727B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1118005U (en) * | 2014-05-14 | 2014-07-28 | Rafael José GARCÍA CABRERA | Rotary defense for springs (Machine-translation by Google Translate, not legally binding) |
| CN108239967A (en) * | 2018-03-27 | 2018-07-03 | 成都凌凌漆科技有限公司 | A kind of hydraulic engineering dykes and dams anti-collision protection structure |
| KR20190131700A (en) * | 2018-05-17 | 2019-11-27 | 삼성중공업 주식회사 | Fender |
| CN208777267U (en) * | 2018-08-24 | 2019-04-23 | 臧秀荣 | A kind of hydraulic engineering dykes and dams anti-collision structure |
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| CN111549727A (en) | 2020-08-18 |
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