CN106614425A - Novel submarine trawl net - Google Patents
Novel submarine trawl net Download PDFInfo
- Publication number
- CN106614425A CN106614425A CN201610812397.3A CN201610812397A CN106614425A CN 106614425 A CN106614425 A CN 106614425A CN 201610812397 A CN201610812397 A CN 201610812397A CN 106614425 A CN106614425 A CN 106614425A
- Authority
- CN
- China
- Prior art keywords
- skeleton
- net
- sides
- net bucket
- plate
- 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.)
- Granted
Links
- 239000011148 porous material Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 abstract description 10
- 238000011835 investigation Methods 0.000 abstract description 5
- 239000004677 Nylon Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000007306 turnover Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
- A01K73/04—Devices for spreading or positioning, e.g. control thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention relates to a novel submarine trawl net, in particular to a novel submarine trawl net. The novel submarine trawl net comprises a net bucket skeleton and a towing frame, straight arm sections are arranged on the two sides of the towing frame, the net bucket skeleton comprises skeleton panels and skeleton side plates, the straight arm sections arranged on the two sides of the towing frame are hinged to the skeleton side plates on the left side and the right side of the net bucket skeleton, the upper edges of the skeleton panels on the front side and the back side of the net bucket skeleton are provided with sawteeth, baffle holes are formed in the middles of the skeleton panels, rows of side holes are formed in the left side and right side of the skeleton panels, and a circle of bottom holes are formed in the outer side of the bottom end of the net bucket skeleton. According to the novel submarine trawl net, sampling mode switching is achieved by disassembling or installing different parts, sampling requirements of different geologies and benthos can be met, mode switching is convenient, the labor and time cost is effectively reduced, the space is effectively saved, the integrated sampling efficiency is improved, the novel submarine trawl net is specially suitable for a deep-sea comprehensive scientific investigation voyage survey.
Description
Technical field
The present invention relates to a kind of deep-sea sampling tool, specifically a kind of novel seabed trawlnet netting gear.
Background technology
With the development of modern synthesis scientific investigation, people increasingly pay attention to multi-crossed disciplines cooperation, the flight number that goes to sea
Geologic survey and biological and ecological investigation is arranged also to become normality simultaneously.Trawlnet is played always emphatically as a kind of traditional sampling mode
Act on, for example, seabottom geology trawlnet has its unique advantage when the rock type sample of rigid base is gathered, and benthon drags
Net (such as twolip trawlnet and A Shi are netted) is adapted to the benthon of the relatively flat soft substrate of collection.Because ocean comprehensive survey is related to
And subject category is more, device category is various, and deck on the ship space and goes on board that the number of people allowed is limited, so if a kind of trawlnet net can be had
Tool can both complete deep seafloor geology trawling, and trawl operation can be completed again, will undoubtedly improve comprehensive adopting
Sample efficiency, and time-consuming and space.
The content of the invention
It is an object of the invention to provide a kind of novel seabed trawlnet netting gear, is realized by dismantling or installing different parts
The conversion of sampling configuration, can meet different geology and benthon sample requirement, and it is convenient to change between pattern, each pattern
Different types of etting, chain net or nylon wire can be installed on netting gear by shackle, improve application efficiency, both effectively
Manpower and time cost, save space are saved, comprehensively sampling efficiency is improve again, be particularly suitable for deep-sea synthesis scientific investigation flight number and adjust
Look into.
The purpose of the present invention is achieved through the following technical solutions：
A kind of novel seabed trawlnet netting gear, including net bucket skeleton and towing frame, wherein the towing frame is respectively provided on two sides with
One section of straight arm section, the net bucket skeleton includes skeleton panel and skeleton side plate, and the straight arm section of the towing frame both sides is respectively articulated with
On the skeleton side plate of net bucket skeleton left and right sides, the top edge of the skeleton panel of side is provided with sawtooth before and after the net bucket skeleton,
The skeleton middle panel is provided with baffle holes, row's lateral orifices is respectively arranged on the left side and the right side on the skeleton panel, in institute
State net bucket skeleton Basolateral and be provided with a circle base hole.
The baffle holes that the skeleton panel of the net bucket skeleton is provided with baffle plate, and skeleton panel are kept off respectively by baffle plate
Firmly.
The baffle holes upper and lower sides are respectively equipped with baffle plate slot, and baffle plate lower edges insert respectively the gear of baffle holes upper and lower sides
In plate slot, and the baffle plate pass through bolt insert be connected in the lateral orifices of skeleton panel side and with nut realize it is spacing solid
It is fixed.
A bracing frame is respectively provided on two sides with each skeleton panel, support frame as described above upper and lower ends are equipped with installation
Hole, after the upper and lower ends of support frame as described above lateral orifices respectively on installing hole described in screw bolt passes and skeleton panel
The realization that is connected with nut is fixed.
Support frame as described above is in strip and upper and lower ends are in bending tabular, and the installing hole is equipped with each bending plate.
The towing frame body is in " people " font, and is respectively provided on two sides with one section of straight arm section in the towing frame, described
Towing frame top is provided with connecting plate, and on the connecting plate apical pore is provided with.
Two blocks are equipped with each skeleton side plate of the net bucket skeleton, and described two blocks are divided into described dragging
Drag the straight arm section both sides of frame.
Advantages of the present invention is with good effect：
1st, the present invention is by dismounting or installs the conversion that different parts realize sampling configuration, and different patten transformation can be with
Meet different geology and benthon sample requirement, and convenience is changed between pattern, each pattern can be incited somebody to action by shackle
Different types of etting, chain net or nylon wire are installed on net bucket skeleton, improve comprehensively sampling efficiency.
2nd, symmetric design of the present invention, structure is novel, front-back contact seabed can normal work, it is simple to operate when off line,
It is stable not turn over net.
3rd, the present invention can be with effectively save manpower and time cost, save space.
Description of the drawings
Fig. 1 is the structural representation of the present invention,
Fig. 2 is the baffle holes partial enlarged drawing in Fig. 1,
Schematic diagram when Fig. 3 is present invention outside installation baffle plate,
Schematic diagram when Fig. 4 is present invention outside installation bracing frame.
Wherein, 1 is net bucket skeleton, and 2 are towing frame, and 3 is block, and 4 is skeleton panel, and 5 is base hole, and 6 is lateral orifices, 7
For sawtooth, 8 is straight arm section, and 9 is bolt, and 10 is connecting plate, and 11 is apical pore, and 12 is baffle plate slot, and 13 is baffle plate, and 14 are support
Frame, 15 is bolt, and 16 is skeleton side plate.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.
As shown in figure 1, the present invention includes net bucket skeleton 1, towing frame 2, baffle plate 13 and bracing frame 14, wherein the towing frame
2 main bodys are in " people " font, and on towing frame 2 top connecting plate 10 is provided with, be provided with the connecting plate 10 for wirerope
Connected apical pore 11, in the towing frame 2 one section of straight arm section 8 is respectively provided on two sides with, and the net bucket skeleton 1 includes the bone of side in front and back
The skeleton side plate 16 of frame panel 4 and left and right sides, wherein the straight arm section 8 of towing frame 2 both sides is cut with scissors respectively by bolt 9 and nut
It is connected on the skeleton side plate 16 of net bucket skeleton 1 left and right sides, on each skeleton side plate 16 of net bucket skeleton 1 two gears is equipped with
Block 3, and described two blocks 3 be divided into the both sides of the straight arm section 8 for limit pull frame 2 hunting range, prevent and turn over
Net phenomenon, the top edge of the skeleton panel 4 of both sides is equipped with sawtooth 7 before and after the net bucket skeleton 1, in the skeleton panel 4
Middle part is provided with two baffle holes being square, and as shown in Fig. 2 each baffle holes upper and lower sides is respectively equipped with baffle plate slot 12,
The left and right sides on each skeleton panel 4 further respectively has row's lateral orifices 6, and in the net bucket Basolateral of skeleton 1 circle is provided with
Base hole 5, when the present invention is used, different types of etting, chain net or nylon wire etc. are packed in net bucket skeleton 1 bottom by shackle
On the base hole 5 at end, as shown in figs. 34, the baffle plate 13 or bracing frame 14 then insert lateral orifices 6 and realize admittedly by bolt 15
It is fixed.
As shown in figures 2-3, when baffle plate 13 is arranged on net bucket skeleton 1, the lower edges of baffle plate 13 insert respectively baffle holes
In the baffle plate slot 12 of upper and lower sides, and the baffle holes on skeleton panel 4 are blocked completely, then the insertion skeleton of bolt 15 panel 4
It is connected in the lateral orifices 6 of one middle side part and with nut, so as to realize the spacing fixation of baffle plate 13.In the present embodiment, in each bone
Two baffle holes being square are equipped with frame panel 4, four baffle plates 13 are provided with altogether respectively by four baffle plates before and after net bucket skeleton 1
Block in hole.
As shown in figure 4, when bracing frame 14 is arranged on net bucket skeleton 1, being respectively provided on two sides with each skeleton panel 4
One bracing frame 14, support frame as described above 14 is in strip and upper and lower ends are in be equipped with installation in bending tabular, and each bending plate
Hole, when bracing frame 14 is arranged on net bucket skeleton 1, two bolts 15 sequentially pass through respectively the upper and lower ends of single bracing frame 14
It is connected with nut after lateral orifices 6 on installing hole and skeleton panel 4, so as to realize for bracing frame 14 being fixed on skeleton panel 4
On.In the present embodiment, the both sides on each skeleton panel 4 are respectively provided with a bracing frame 14, and four bracing frames 14 are provided with altogether.
The present invention operation principle be：
The present invention includes three kinds of mode of operations.
As shown in figure 1, when the present invention carries out abyssal benthos trawlnet with the first mode of operation, needing net bucket bone
The baffle plate 13 of side, bracing frame 14 and corresponding bolt 15 are pulled down before and after frame 1, and shackle is used by different meshes according to collection demand
It is connected on the base hole 5 of net bucket skeleton 1 with the etting of length, the wirerope on ship is connected to apical pore by towing frame 2 with big shackle
On 11, now the present invention can substitute twolip trawlnet and carry out benthon investigation and sampling, be suitable for substrate for cay, rubble or sand
The sea area of gravel, baffle plate 13 had both reserved enough spaces after dismantling, while also mitigating the weight of netting gear significantly, benthon can be from
Netting gear top network interface is entered, it is also possible to entered from baffle holes, and the sawtooth 7 on net bucket skeleton 1 can gather the bottom in rigid base
Dwell biology, the hunting range that the block 3 on skeleton side plate 16 can pull frame 2 with effective control, it is ensured that netting gear is with normal work appearance
State is towed in seabed and do not turn over net, and easily etting can be installed on base hole 5 by shackle.
As shown in Fig. 2 when the present invention carries out deep seafloor geology trawlnet with second mode of operation, needing at the first
Side before and after net bucket skeleton 1 is installed into overhead gage 13 on the basis of mode of operation to block baffle holes, blending bolt 15 is fixed on side
Anti- baffle plate 13 slides on hole 6, and different chain nets and embedded nylon wire are connected into net bucket bone using shackle according to collection demand
On the base hole 5 of frame 1, towing frame 1 is connected to the wirerope on ship on apical pore 11, now due to adding baffle plate with big shackle
13, netting gear weight is greatly increased, and can be used for traditional deep-sea geology trawling, and is highly suitable for various rigid bases
Carry out operation with complicated landform, the sawtooth 7 on net bucket skeleton 1 efficiently can pull the rock of substrate, ore etc. in net bucket into,
Front and rear baffle 13 can make the rock etc. into network interface load in net and not tumble away, and chain net and embedded nylon wire can be square
Just be connected by buckle on base hole 5, in addition using towing frame 2 rather than gang rope come pull can ensure that be dragged to it is substantial amounts of
Basement rock class sample, and without worrying that gang rope stress breaks.
As shown in figure 3, when the present invention carries out abyssal benthos trawlnet with the third mode of operation, needing at the first
Upper support frame 14 is installed into side before and after net bucket skeleton 1 on the basis of mode of operation, bracing frame 14 is separately mounted to before and after skeleton panel 4
On both sides and be fixed in lateral orifices 6 using bolt 15 and nut, according to collection demand utilization shackle by different meshes and length
The etting of degree is connected on the base hole 5 of net bucket skeleton 1, and towing frame 2 is connected to the wirerope on ship on apical pore 11 with big shackle,
Now the present invention can partly substitute the function of Agassiz trawl, be suitable for substrate for deposit or relatively flat sea area collection bottom
Dwell biological sample, in front and back bracing frame 14 can ensure that makes net bucket skeleton 1 keep the distance with seabed during towing, and drops significantly
The leading edge of sawtooth 7 on low net bucket skeleton 1 is absorbed in bed mud or the possibility of destruction bottom environment is scraped on hard bottom, additionally, due to not having
Have plus overhead gage 13, the weight of netting gear is mitigated significantly, while the space for reserving can facilitate benthon to enter, can by shackle
So that easily etting is installed on base hole 5.
In addition, need to use hydraulic wireline winch when present invention decentralization and recovery, using trawlnet in seabed operation, due to block
3 stop, does not exist and turns over net phenomenon, improves collecting efficiency.
Claims (7)
1. a kind of novel seabed trawlnet netting gear, it is characterised in that：Including net bucket skeleton (1) and towing frame (2), wherein the towing
Frame (2) is respectively provided on two sides with one section of straight arm section (8), and the net struggles against skeleton (1) including skeleton panel (4) and skeleton side plate (16),
The straight arm section (8) of towing frame (2) both sides is respectively hinged on the skeleton side plate (16) of net bucket skeleton (1) left and right sides, described
The top edge of the skeleton panel (4) of side is provided with sawtooth (7) before and after net bucket skeleton (1), and at the skeleton panel (4) middle part gear is provided with
Plate hole, on the skeleton panel (4) row's lateral orifices (6) are respectively arranged on the left side and the right side, in net bucket skeleton (1) bottom
Outside is provided with a circle base hole (5).
2. novel seabed trawlnet netting gear according to claim 1, it is characterised in that：The skeleton face of net bucket skeleton (1)
The baffle holes that plate (4) is provided with baffle plate (13), and skeleton panel (4) are blocked respectively by baffle plate (13).
3. novel seabed trawlnet netting gear according to claim 2, it is characterised in that：The baffle holes upper and lower sides are respectively equipped with
Baffle plate slot (12), baffle plate (13) lower edges are inserted respectively in the baffle plate slot (12) of baffle holes upper and lower sides, and the gear
It is connected in the lateral orifices (6) that plate (13) passes through bolt (15) insertion skeleton panel (4) side and with nut and realizes spacing fixation.
4. novel seabed trawlnet netting gear according to claim 1, it is characterised in that：Both sides on each skeleton panel (4)
Be respectively equipped with a bracing frame (14), support frame as described above (14) upper and lower ends are equipped with installing hole, support frame as described above (14) it is upper
Lower two ends sequentially pass through the installing hole and the lateral orifices (6) on skeleton panel (4) afterwards and nut by bolt (15) respectively
It is connected and realizes fixing.
5. novel seabed trawlnet netting gear according to claim 4, it is characterised in that：Support frame as described above (14) in strip and on
Lower two ends are equipped with the installing hole in bending tabular on each bending plate.
6. novel seabed trawlnet netting gear according to claim 1, it is characterised in that：Towing frame (2) main body is in " people "
Font, and one section of straight arm section (8) is respectively provided on two sides with towing frame (2), it is provided with connecting plate on towing frame (2) top
(10) apical pore (11), is provided with the connecting plate (10).
7. the novel seabed trawlnet netting gear according to claim 1 or 6, it is characterised in that：Each of net bucket skeleton (1)
Two blocks (3) are equipped with skeleton side plate (16), and described two blocks (3) are divided into the straight arm section of towing frame (2)
(8) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812397.3A CN106614425B (en) | 2016-09-09 | 2016-09-09 | Submarine trawl net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812397.3A CN106614425B (en) | 2016-09-09 | 2016-09-09 | Submarine trawl net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106614425A true CN106614425A (en) | 2017-05-10 |
| CN106614425B CN106614425B (en) | 2022-03-29 |
Family
ID=58852006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610812397.3A Active CN106614425B (en) | 2016-09-09 | 2016-09-09 | Submarine trawl net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106614425B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533214A (en) * | 2018-11-06 | 2019-03-29 | 杭州华艺喷泉设备有限公司 | A kind of floating platform convenient for dragging |
| CN110959586A (en) * | 2019-05-08 | 2020-04-07 | 自然资源部第一海洋研究所 | Modular benthonic animal trawl |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361528A (en) * | 1993-05-25 | 1994-11-08 | Peacock Francis E N | Trawling system and trawl device for shrimp |
| CN103141452A (en) * | 2012-05-30 | 2013-06-12 | 中国水产科学研究院东海水产研究所 | Frame type double-bag drag net for assessing euphausiasuperba resource |
| CN203723286U (en) * | 2014-02-20 | 2014-07-23 | 中国水产科学研究院东海水产研究所 | Frame trawl convenient to mount |
| CN204855178U (en) * | 2015-09-01 | 2015-12-09 | 中国水产科学研究院黑龙江水产研究所 | Rake net formula river benthos collector |
| CN105707022A (en) * | 2016-02-24 | 2016-06-29 | 华东师范大学 | Surface water dragnet |
| CN205378711U (en) * | 2016-03-01 | 2016-07-13 | 常州市环境监测中心 | Gather large -scale zoobenthos's of fresh water square mouth trawlnet |
| CN206043158U (en) * | 2016-09-09 | 2017-03-29 | 中国科学院海洋研究所 | A kind of novel seabed trawlnet netting gear |
-
2016
- 2016-09-09 CN CN201610812397.3A patent/CN106614425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361528A (en) * | 1993-05-25 | 1994-11-08 | Peacock Francis E N | Trawling system and trawl device for shrimp |
| CN103141452A (en) * | 2012-05-30 | 2013-06-12 | 中国水产科学研究院东海水产研究所 | Frame type double-bag drag net for assessing euphausiasuperba resource |
| CN203723286U (en) * | 2014-02-20 | 2014-07-23 | 中国水产科学研究院东海水产研究所 | Frame trawl convenient to mount |
| CN204855178U (en) * | 2015-09-01 | 2015-12-09 | 中国水产科学研究院黑龙江水产研究所 | Rake net formula river benthos collector |
| CN105707022A (en) * | 2016-02-24 | 2016-06-29 | 华东师范大学 | Surface water dragnet |
| CN205378711U (en) * | 2016-03-01 | 2016-07-13 | 常州市环境监测中心 | Gather large -scale zoobenthos's of fresh water square mouth trawlnet |
| CN206043158U (en) * | 2016-09-09 | 2017-03-29 | 中国科学院海洋研究所 | A kind of novel seabed trawlnet netting gear |
Non-Patent Citations (2)
| Title |
|---|
| 曾宪军等: "海洋地质调查方法与设备综述", 《气象水文海洋仪器》 * |
| 金玉兴: "深海拖网", 《探矿工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533214A (en) * | 2018-11-06 | 2019-03-29 | 杭州华艺喷泉设备有限公司 | A kind of floating platform convenient for dragging |
| CN109533214B (en) * | 2018-11-06 | 2020-07-10 | 杭州华艺喷泉设备有限公司 | Floating platform convenient to pull |
| CN110959586A (en) * | 2019-05-08 | 2020-04-07 | 自然资源部第一海洋研究所 | Modular benthonic animal trawl |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106614425B (en) | 2022-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106614425A (en) | Novel submarine trawl net | |
| CN103039407A (en) | One-boat beam haul-bag single-sac bottom trawl for investigating and sampling marine demersal creatures | |
| CN207144037U (en) | A kind of adjustable excavator scraper bowl of size | |
| CN206043158U (en) | A kind of novel seabed trawlnet netting gear | |
| Drewery et al. | The selectivity of the Swedish grid and 120 mm square mesh panels in the Scottish Nephrops trawl fishery | |
| CN201183955Y (en) | Side slope ecological protection structure | |
| CN104904683A (en) | Equipment for digging out razor clams | |
| CN108445153B (en) | Trawl net bag selectivity test device | |
| AU2021105129A4 (en) | New type of submarine trawl net | |
| CN209053145U (en) | Suction is twisted to dig sand ore dressing integrated ship | |
| CN2225425Y (en) | Artificial reef | |
| CN207758967U (en) | Aquafarm multifunctional platform | |
| CN202496293U (en) | Assembly-type sea cucumber reef | |
| CN100397986C (en) | Single dragging rope self expanding type single ship middle layer dragnet | |
| AU2020101448A4 (en) | Drift net capable of quantitatively calculating fishery resources | |
| CN212787079U (en) | Euphausia superba trawl with catching and releasing functions | |
| CN211205859U (en) | Underwater information acquisition towing bracket | |
| CN210369111U (en) | A harrow flat ware for dredging construction and be used for dredging construction system | |
| CN208379540U (en) | Geotechnological raft pad for river and lake library revetment | |
| CN207331612U (en) | The protective device of protection slope | |
| CN201338711Y (en) | Ship specially used for salving enteromorpha prolifera | |
| CN213296320U (en) | Composite drainage plate | |
| CN203248185U (en) | Fully mechanized coal mining face waste rock rolling resistant isolating device | |
| CN218843129U (en) | Sunken slope frame beam | |
| CN214245590U (en) | Water conservancy bank protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |