CN204762903U - Fixing device of drift nature roe, young afvanced fry investigation net - Google Patents
Fixing device of drift nature roe, young afvanced fry investigation net Download PDFInfo
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- CN204762903U CN204762903U CN201520583702.7U CN201520583702U CN204762903U CN 204762903 U CN204762903 U CN 204762903U CN 201520583702 U CN201520583702 U CN 201520583702U CN 204762903 U CN204762903 U CN 204762903U
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Abstract
The utility model provides a fixing device of drift nature roe, young afvanced fry investigation net, the utility model relates to a fixing device of drift nature roe, young afvanced fry investigation net, it is difficult to highly carry out the problem of adjusting to the collection net for the fixing device who solves current investigation net. This fixing device includes the anchor, the anchor line, the hoop, two bar irons rope, two are supported iron set and a plurality of set net, the left branch props iron set and right branch and props the iron set and fix in the river course bottom, it all is connected with the anchor through the anchor line to prop the upper portion that iron set and right branch propped the iron set at the left branch, there are two hoops at every surface cover that supports the iron set, the one end of every bar iron rope is connected on the left branch props the hoop of iron set, the other end is connected on the right branch props the hoop of iron set, rope and the infraclass of raising to the higher plane of principle rope parallel arrangement, be connected with the set net between rope and the infraclass of the raising to the higher plane of principle rope. The utility model discloses a position that the set net was adjusted to the hoop, convenient operation, flexibility rise, fall.
Description
Technical field
The utility model relates to a kind of fixture for drift property fish-egg, larva and juvenile investigation net.
Background technology
China is faced with the pressure that fishery resources are destroyed, and hydrobiological maintenance work is very urgent.Fishery resources survey assessment is the prerequisite of the protection of fish resources, carries out fish stock assessment work meaning great.Drift fish-egg, larva and juvenile collection are important contents in fish stock assessment, are the important technical of spawning ground investigation.The generating capacity of fish-egg, larva and juvenile as the important indicator of stock of fish amount As-Is Assessment, can also can be used as the important evidence judging position, fish spawning ground, scale.Therefore, fish-egg, larva and juvenile are investigated work very necessary for protection of fish resources work.
Although also formulated relevant criterion for the collecting method of drift fish-egg, larva and juvenile at present, there is certain condition requirement in the specific implementation.Such as, the method for the fish-egg of collection drift at present, larva and juvenile adopts Jianggang net usually, and the method needs to insert rod, bamboo pole or iron at the bottom of river mud or at the bottom of sand and is used for fixing Jianggang net, and then carries out the collection of fish-egg, larva and juvenile.But not all river or section are all silt substrates, often some sampling section is chad substrate, and rod, bamboo pole are difficult to be fixed or fix insecure.Therefore, for ovum, larva and juvenile collecting work carry out very difficult.Specifically, carry out Drifting egg at present, larva and juvenile collecting work mainly exist following problem:
1, to the selection of River Sediment condition, work under the River Sediment condition that can not be difficult to set at chad etc.;
2, the adjustment of river level fluctuation to height of net opening bothers relatively.Ovum, larva and juvenile generally need when gathering to fix 3 investigation netting gears simultaneously, regulate when netting gear height and need each netting gear to regulate one by one.In general investigate netting gear and be placed on 2-5m depth of water section, the needs that (exceed this scope) when SEA LEVEL VARIATION is larger are fixed the rod of fixing netting gear or bamboo pole again addressing, so just add very large workload to sampling work.If investigate network interface in addition not close within the non-sampled time, very easily netting gear is blocked because river impurity is more, therefore generally need network interface to close in the non-sampled time period.
Utility model content
The purpose of this utility model to solve the existing problem investigated the fixture of netting and be difficult to regulate the height gathering net, and provide the fixture that the investigation of a kind of drift property fish-egg, larva and juvenile are netted.
Drift fish-egg of the present utility model, the fixture of larva and juvenile investigation net comprises anchor, anchor line, iron hoop, article two, gang rope, two support iron and multiple set net, left support iron, right support iron and horizontal plane interval are fixed on bottom of river channel, all anchor is connected with by anchor line on the top of left support iron and right support iron, two iron hoops are had in the appearance surface cover of each support iron, one end of every bar gang rope is connected on the iron hoop of left support iron, the other end is connected on the iron hoop of right support iron, go up gang rope and lower gang rope to be set in parallel in two and to support between iron simultaneously, set net is connected with between upper gang rope and lower gang rope, the network interface of set net is vertical with water (flow) direction.
The fixture of drift fish-egg described in the utility model, larva and juvenile investigation net can gather drift fish-egg, fry in the substrate rivers such as chad, efficiently solves Drifting egg, larva and juvenile investigation netting gear to the restricted problem of River Sediment requirement.When gathering drift fish-egg, larva and juvenile by the upper and lower head rope separately, upper gang rope is close to horizontal plane, and lower gang rope is regulated by the degree of depth sliding up and down iron hoop, makes fixation gather net network interface and fully opens.If water level changes also can regulate upper and lower gang rope by ascending, descending iron hoop.Upper and lower head rope rope can close in the non-sampled time by investigation net, raised iron hoop simultaneously and was surfaced by upper and lower head rope rope, namely complete the closedown of investigation net, and this fixture is provided convenience to the operation that investigation net height regulates and network interface is closed.
Accompanying drawing explanation
The front view of the fixture that Fig. 1 is the utility model drift fish-egg, larva and juvenile investigation is netted;
The vertical view of the fixture that Fig. 2 is the utility model drift fish-egg, larva and juvenile investigation is netted.
Embodiment
Embodiment one: present embodiment drift fish-egg, the fixture of larva and juvenile investigation net comprises anchor 1, anchor line 2, iron hoop 3, article two, gang rope, two support iron and multiple set net 7, left support iron 6-1, right support iron 6-2 and horizontal plane interval are fixed on bottom of river channel, all anchor 1 is connected with by anchor line 2 on the top of left support iron 6-1 and right support iron 6-2, two iron hoops 3 are had in the appearance surface cover of each support iron, one end of every bar gang rope is connected on the iron hoop 3 of left support iron 6-1, the other end is connected on the iron hoop 3 of right support iron 6-2, go up gang rope 4 and lower gang rope 8 to be set in parallel in two and to support between iron simultaneously, set net 7 is connected with between upper gang rope 4 and lower gang rope 8, the network interface of set net 7 is vertical with water (flow) direction.
Present embodiment connects support iron and upper and lower gang rope by iron hoop.
Embodiment two: present embodiment and embodiment one to be connected to by cotton rope unlike iron hoop 3 and to support on iron.
Embodiment three: present embodiment and embodiment one or two are connected between upper gang rope 4 and lower gang rope 8 by the connection cord 5 on network interface unlike set net 7.
Embodiment four: present embodiment and embodiment one to three are connected with 2 ~ 3 anchor lines 2 unlike the top at each support iron, and every root anchor line 2 is all connected with anchor 1.
Embodiment five: one of present embodiment and embodiment one to four are rectangle unlike the network interface shape of set net 7.
Embodiment: the present embodiment drift fish-egg, the fixture of larva and juvenile investigation net comprises anchor 1, anchor line 2, iron hoop 3, article two, gang rope, two support iron and three set nets 7, left support iron 6-1, right support iron 6-2 and horizontal plane interval are fixed on bottom of river channel, all anchor 1 is connected with by anchor line 2 on the top of left support iron 6-1 and right support iron 6-2, two iron hoops 3 are had in the appearance surface cover of each support iron, one end of every bar gang rope is connected on the iron hoop 3 of left support iron 6-1, the other end is connected on the iron hoop 3 of right support iron 6-2, go up gang rope 4 and lower gang rope 8 to be set in parallel in two and to support between iron simultaneously, set net 7 is connected with between upper gang rope 4 and lower gang rope 8, the network interface of set net 7 is vertical with water (flow) direction, the network interface of set net 7 is rectangle, long is 1.5m, wide is 1m.
Drift fish-egg described in the present embodiment, larva and juvenile fixation investigation net adopts name to be called " a kind of rivers drift fish-egg, prelarva quantitative collection netting gear ", notification number: the collection netting gear in CN202635372U, when placing investigation net, first set net set-point is selected, select straight in river course, the depth of water 2 ~ 5 meters, the position of flow velocity 0.3 ~ 0.5m/s.After choosing set-point, support iron is fixed in river, fix loosely because river bed matter mostly is gravel, therefore support iron bar is fixed by anchor line with two anchors, the set-point of anchor is according to water (flow) direction, an anchoring fixed point is perpendicular to bank, another anchoring flow path direction against the current of fixing a point is placed, and the angle of two anchors is 90 °.Be connected with lower gang rope by gang rope between two irons, connect with iron hoop between upper and lower gang rope and support iron.Set net is fixed between upper and lower gang rope, the upper and lower guiding principle of set net network interface respectively has three connection cords, connection cord is tied up to respectively in upper and lower gang rope and namely complete the fixing of set net, strain upper and lower gang rope, three fixations investigation net placed side by side between two fixing irons.
When SEA LEVEL VARIATION, upper and lower gang rope can be regulated by ascending, descending iron hoop.Upper and lower head rope rope closed in the non-sampled time by investigation net, raised iron hoop simultaneously and was surfaced by upper and lower head rope rope, namely complete the closedown of investigation net, used this fixture can make the flexible adjustment of investigation net, easy.
Claims (5)
1. a drift fish-egg, the fixture of larva and juvenile investigation net, it is characterized in that this drift fish-egg, the fixture of larva and juvenile investigation net comprises anchor (1), anchor line (2), iron hoop (3), article two, gang rope, two support iron and multiple set net (7), left support iron (6-1), right support iron (6-2) and horizontal plane interval are fixed on bottom of river channel, all anchor (1) is connected with by anchor line (2) on the top of left support iron (6-1) and right support iron (6-2), two iron hoops (3) are had in the appearance surface cover of each support iron, one end of every bar gang rope is connected on the iron hoop (3) of left support iron (6-1), the other end is connected on the iron hoop (3) of right support iron (6-2), go up gang rope (4) and lower gang rope (8) to be set in parallel in two and to support between iron simultaneously, set net (7) is connected with between upper gang rope (4) and lower gang rope (8), the network interface of set net (7) is vertical with water (flow) direction.
2. the fixture of a kind of drift property fish-egg according to claim 1, larva and juvenile investigation net, is characterized in that iron hoop (3) is connected to by cotton rope and supports on iron.
3. the fixture of a kind of drift property fish-egg according to claim 1, larva and juvenile investigation net, is characterized in that set net (7) is connected between upper gang rope (4) and lower gang rope (8) by the connection cord (5) on network interface.
4. the fixture of a kind of drift property fish-egg according to claim 1, larva and juvenile investigation net, it is characterized in that being connected with 2 ~ 3 anchor lines (2) on the top of each support iron, every root anchor line (2) is all connected with anchor (1).
5. the fixture of a kind of drift property fish-egg according to claim 1, larva and juvenile investigation net, is characterized in that the network interface shape of set net (7) is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583702.7U CN204762903U (en) | 2015-08-05 | 2015-08-05 | Fixing device of drift nature roe, young afvanced fry investigation net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583702.7U CN204762903U (en) | 2015-08-05 | 2015-08-05 | Fixing device of drift nature roe, young afvanced fry investigation net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204762903U true CN204762903U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520583702.7U Expired - Fee Related CN204762903U (en) | 2015-08-05 | 2015-08-05 | Fixing device of drift nature roe, young afvanced fry investigation net |
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| Country | Link |
|---|---|
| CN (1) | CN204762903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105766821A (en) * | 2016-03-10 | 2016-07-20 | 水利部中国科学院水工程生态研究所 | Chinese sturgeon fry layered collecting net and using method |
| CN114568395A (en) * | 2022-03-11 | 2022-06-03 | 温州市公用事业发展集团有限公司珊溪水源保护分公司 | Fixed net |
-
2015
- 2015-08-05 CN CN201520583702.7U patent/CN204762903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105766821A (en) * | 2016-03-10 | 2016-07-20 | 水利部中国科学院水工程生态研究所 | Chinese sturgeon fry layered collecting net and using method |
| CN105766821B (en) * | 2016-03-10 | 2018-10-26 | 水利部中国科学院水工程生态研究所 | Chinese sturgeon larvae is layered the application method of collecting net |
| CN114568395A (en) * | 2022-03-11 | 2022-06-03 | 温州市公用事业发展集团有限公司珊溪水源保护分公司 | Fixed net |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |