CN111134065A

CN111134065A - Net cage

Info

Publication number: CN111134065A
Application number: CN201811313097.6A
Authority: CN
Inventors: 郭福元; 颜玲; 刘陆昱; 刘富祥; 卢晓; 王明; 宋江; 辛晓军; 王友辉; 张晓明; 盛剑
Original assignee: China International Marine Containers Group Co Ltd; Yantai CIMC Raffles Offshore Co Ltd; CIMC Offshore Engineering Institute Co Ltd; Longkou CIMC Raffles Offshore Co Ltd; Yantai CIMC Blue Ocean Technology Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; Yantai CIMC Raffles Offshore Co Ltd; CIMC Offshore Engineering Institute Co Ltd; Longkou CIMC Raffles Offshore Co Ltd; Yantai CIMC Blue Ocean Technology Co Ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2020-05-12

Abstract

The invention provides a net cage, comprising a net cage body, a lifting device, a power device and a plurality of breeding cages. The cage body is a frame-type structure with a breeding space in it; the lifting device includes a driving shaft arranged at the top of the cage body, a driven shaft arranged at the bottom of the cage body, and a driving shaft arranged on the driving shaft and the driven shaft. Lifting belt; the power device drives the driving shaft to rotate to drive the lifting belt to move up and down; a plurality of breeding cages are fixed on the outer circumference of the lifting belt and can rise to the top of the cage body in sequence with the up and down movement of the lifting belt. The driving shaft of the lifting device is driven by the power device to rotate, and the lifting belt is driven to move up and down, so that the breeding cage is raised from the breeding space to the top of the cage so that the staff can work. Therefore, the cage can realize the automatic lifting of the breeding cage to the top of the cage, which saves a lot of manpower and improves the work efficiency compared with the traditional manual lifting and placing of the breeding cage.

Description

Net cage

Technical Field

The invention relates to the technical field of ocean engineering equipment, in particular to a net cage.

Background

Abalone is one of the rare seafood, has tender meat quality, is fresh but not greasy, has medicinal value, is called as 'sea flavor crown', and is one of the marine products 'eight delicacies' since ancient times. At present, shallow raft culture is mainly used for abalone culture in China, when feeding is clean, an abalone culture cage needs to be manually fished out of the sea, the labor intensity of workers is high, and the working efficiency is low.

Disclosure of Invention

The invention aims to provide a net cage capable of automatically lifting a breeding cage, and solves the problem that a large amount of labor is consumed when the breeding cage is manually lifted and placed in the prior art.

In order to solve the technical problem, the invention provides a net cage, which comprises: the net cage body is of a frame type structure and is internally provided with a culture space; the lifting device comprises a driving shaft arranged at the top of the net cage body, a driven shaft arranged at the bottom of the net cage body and a lifting belt wound on the driving shaft and the driven shaft; the power device drives the driving shaft to rotate so as to drive the lifting belt to move up and down; and the plurality of culture cages are fixed on the periphery of the lifting belt and can sequentially ascend to the top of the net cage body along with the up-and-down movement of the lifting belt.

In one embodiment, the sections of the driving shaft and the driven shaft are both equilateral polygons; the lifting belt is an annular flat cable, and the flat surface of the lifting belt is attached to one side surface of the driving shaft and one side surface of the driven shaft.

In one embodiment, the cultivation cage is provided with a back plate, the back plate is fixedly connected with the back surface of the lifting belt, the side length of the driving shaft and the side length of the driven shaft are equal to the length of the back plate, and the back plate can be attached to the side surface of the driving shaft or the side surface of the driven shaft.

In one embodiment, the cultivation cages are arranged at intervals, and the side length of the driving shaft and the side length of the driven shaft are equal to the distance between two adjacent cultivation cages.

In one embodiment, a plurality of fixing units for fixing the cultivation box cage are arranged at intervals on the periphery of the lifting belt, and the cultivation box cage is fixed on the lifting belt through the fixing units.

In one embodiment, the fixing unit is groove-shaped, a protrusion protrudes from the cultivation cage, and the protrusion is matched with the fixing unit to fix the cultivation cage on the lifting belt.

In one embodiment, the cultivation cage is suspended on the lifting belt through the fixing unit.

In one embodiment, a plurality of lifting belts are wound side by side along the length direction of the driving shaft, and each cultivation box cage is fixedly connected with the plurality of lifting belts.

In one embodiment, a plurality of passageways parallel to each other are arranged at intervals along the longitudinal direction of the net cage body; the lifting devices are arranged on two sides of each passageway.

In one embodiment, the lifting device further comprises a driven gear arranged on the driving shaft; the power device comprises: the motor is arranged at the top of the net cage body; the end of the output shaft of the motor can extend or retract relative to the driven gear; the driving gear is connected to the tail end of an output shaft of the motor and can be meshed with the driven gear along with the extension or retraction of the output shaft to drive the driven gear to rotate so as to drive the driving shaft to rotate.

In one embodiment, a sliding track is arranged in the longitudinal direction of the top of the net cage body; the bottom of the power device is also provided with a pulley, and the pulley is in sliding fit with the sliding rail so that the power device can move along the longitudinal direction of the net cage body.

In one embodiment, the power device further comprises a locking mechanism, wherein the locking mechanism fixes the pulley when the driving gear rotates.

In one embodiment, the upper surface of the passageway is lower than the drive shaft.

In one embodiment, the cage body comprises: the top frame comprises two top cross beams arranged at intervals and two top longitudinal beams connected between the two top cross beams; a plurality of supporting bearings for the driving shaft to penetrate are arranged on each top longitudinal beam at intervals; the bottom frame comprises two bottom cross beams arranged at intervals and two bottom longitudinal beams connected between the two bottom cross beams; a plurality of supporting bearings for the driven shaft to penetrate are arranged on each bottom longitudinal beam at intervals; the upright columns are arranged between the top frame and the bottom frame; and the plurality of inclined struts are positioned between the top frame and the bottom frame, and each inclined strut is arranged between two adjacent upright posts.

In one embodiment, the top frame further comprises at least one top frame middle longitudinal beam arranged between the two top cross beams; a plurality of supporting bearings for the driving shaft to penetrate are arranged on the top frame middle longitudinal beam at intervals; the bottom frame also comprises at least one bottom frame middle longitudinal beam arranged between the two bottom cross beams; and a plurality of supporting bearings for the driven shaft to penetrate are arranged on the bottom frame middle longitudinal beam at intervals.

According to the technical scheme, the invention has the advantages and positive effects that:

the net cage comprises a net cage body, a lifting device, a power device and a cultivation cage. The breeding cage is arranged on the lifting belt of the lifting device at intervals, the driving shaft of the lifting device is driven by the power device to rotate, the lifting belt is driven to move up and down, and then the breeding cage rises to the top of the net cage from the breeding space to enable workers to work, or returns to the breeding space from the top of the net cage. Therefore, the net cage can be automatically lifted to the top of the net cage, and compared with the traditional manual lifting and placing of the cultivation cage, a large amount of manpower is saved, and the working efficiency is improved. The lifting device only lifts part of the cultivation cages to the sea level in the process of lifting the cultivation cages, so that the influence on organisms in the cultivation cages is reduced. And the structure of the net cage on the sea level is not influenced by the water depth, so the culture space can extend to a deeper place below the sea level, and the net cage is more suitable for deep and open sea culture.

Furthermore, a plurality of groups of cultivation cages are arranged in parallel in the horizontal direction and the vertical direction in the net cage, so that the comprehensive utilization rate of sea areas in unit volume is improved and ocean resources are utilized more fully through the reasonable layout of the cultivation cages.

Drawings

Fig. 1 is a schematic structural view of the net cage of the present invention.

Fig. 2 is a partial plan view of the cage body of the present invention.

FIG. 3 is a schematic view of the cage of the present invention mounted on a lifting device.

Fig. 4 is a partial side view of the net cage of the present invention.

Fig. 5 is a schematic diagram of the power device and the lifting device of the present invention.

The reference numerals are explained below: 1. a net cage; 11. a cage body; 111. a top frame; 1111. a top beam; 1112. a top stringer; 1113. a top frame middle longitudinal beam; 1114. a support bearing; 112. a bottom frame; 1121. a bottom cross member; 1122. a bottom stringer; 113. a column; 114. bracing; 12. a lifting device; 121. a drive shaft; 122. a driven shaft; 123. a lifting belt; 1231. an anti-skid plate; 124. a driven gear; 13. a power plant; 131. a motor; 132. a driving gear; 133. a pulley; 14. a breeding cage; 15. an aisle.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

Referring to fig. 1, the present invention provides a net cage 1, which includes a net cage body 11, a lifting device 12, a power device 13, and a plurality of cultivation cages 14. The net cage 1 can be fixed in the sea area by adopting different fixing modes, such as a bottom-sitting mode, a floating mode and the like. During normal farming, seawater should submerge the farming cages 14 and ensure that the farming cages 14 are located 1-2 meters below sea level.

The cage body 11 is of a frame structure and is provided with a culture space therein. The culture space is positioned below the sea level to culture various culture living beings. In this embodiment, the farming space is used for breeding the abalone, and in other embodiments, also can be used for breeding other fishes. The top of the net cage body 11 is a working space and is positioned on the sea level, so that workers can conveniently throw baits, clean or harvest.

Specifically, the cage body 11 includes a top frame 111, a bottom frame 112, a plurality of vertical columns 113 and inclined struts 114 disposed between the top frame 111 and the bottom frame 112.

Referring to fig. 2, the top frame 111 includes two top cross beams 1111 disposed at intervals, two top longitudinal beams 1112 connected between the two top cross beams 1111, and a top frame middle longitudinal beam 1113. The upper surface of top cross beam 1111 is provided with a passageway for workers to pass through. A support bearing 1114 is welded to the top rail 1112. The support bearing 1114 is located inboard of the top rail 1112. The inner side and the outer side are based on the state of the net cage 1, and the inner side is towards the inside of the net cage 1, otherwise the outer side is. Hereinafter, the definitions of the inner side and the outer side are the same as those of the above description unless otherwise specified.

Preferably, a plurality of support bearings 1114 are provided at intervals along the length of the top rail 1112.

The middle area of the upper surface of the top longitudinal beam 1112 is provided with a sliding track, and the area close to the outer side of the upper surface is provided with a passageway for workers to pass through.

The two ends of the longitudinal beam 1113 in the top frame are respectively positioned in the middle of the top cross beam 1111. Support bearings 1114 are welded on two sides of the longitudinal beam 1113 in the top frame. The upper surface of the longitudinal beam 1113 in the top frame is provided with a passageway for workers to pass through.

In other embodiments, the number of the longitudinal beams 1113 in the top frame may also be two, and the longitudinal beams 1111 are arranged at intervals along the length direction, wherein a sliding track is arranged on the longitudinal beam 1113 in one top frame. The number of the longitudinal beams 1113 in the top frame can be multiple, and the longitudinal beams can be arranged according to actual needs.

Specifically, the top cross beam 1111, the top longitudinal beam 1112 and the top frame middle longitudinal beam 1113 are all made of carbon steel pipes and are welded to form the top frame 111.

The bottom frame 112 includes two bottom cross beams 1121 arranged at intervals, two bottom longitudinal beams 1122 connected between the two bottom cross beams 1121, and a bottom frame middle longitudinal beam. A support bearing is welded to the inside of bottom stringer 1122. Preferably, a plurality of support bearings are spaced apart along the length of bottom stringer 1122.

The two ends of the longitudinal beam in the bottom frame are respectively located in the middle of the bottom cross beam 1121. Support bearings are welded on two sides of the longitudinal beam in the bottom frame.

In other embodiments, the number of the longitudinal beams in the bottom frame 112 may be multiple, and is consistent with the number of the longitudinal beams in the top frame 111.

Specifically, the bottom cross beams 1121, the bottom longitudinal beams 1122 and the longitudinal beams in the bottom frame 112 are all made of carbon steel pipes, and are welded and connected to form the bottom frame 112.

The vertical columns 113 include corner vertical columns disposed at four corners of the top frame 111 and the bottom frame 112, and intermediate vertical columns disposed between two adjacent corner vertical columns. Preferably, inclined struts 114 are further disposed between the middle vertical columns and the adjacent corner vertical columns, and each inclined strut 114 is located between the top frame 111 and the bottom frame 112.

In this embodiment, the upright posts 113 and the inclined struts 114 are made of carbon steel pipes, and are welded to the top frame 111 and the bottom frame 112 to form the cage body 11.

A plurality of parallel passages 15 are arranged at intervals along the longitudinal direction of the net cage body 11, and workers can stand on the passages 15 to carry out works such as bait casting, cleaning or harvesting.

Preferably, the lifting device 12 is arranged on both sides of each aisle 15. In this embodiment, two lifting devices 12 are disposed on the inner sides of the adjacent aisles 15, and the layout of the net cage 1 is fully considered, so that the space utilization is more reasonable. In the longitudinal direction of the net cage body, the area defined between two adjacent passageways 15 is the inner side.

Referring to fig. 3, each of the lifting devices 12 includes a driving shaft 121 disposed at the top of the cage body 11, a driven shaft 122 disposed at the bottom of the cage body 11, a lifting belt 123 wound around the driving shaft 121 and the driven shaft 122, and a driven gear 124 disposed at one end of the driving shaft 121.

In this embodiment, the driving shaft 121 is inserted into the supporting bearing 1114 of the top frame 111, and the driven shaft 122 is inserted into the supporting bearing of the bottom frame 112. And the upper surface of the driving shaft 121 is higher than the upper surface of the passage 15, so that workers can conveniently stand on the passage 15 to work.

Preferably, the driving shaft 121 and the driven shaft 122 are each in the shape of an equilateral polygon. In this embodiment, the sections of the driving shaft 121 and the driven shaft 122 are both regular hexagons, and the side lengths of the driving shaft 121 and the driven shaft 122 are equal. In other embodiments, the cross sections of the driving shaft 121 and the driven shaft 122 may also be regular octagon or regular decagon, which is set according to the actual situation in a specific application.

In this embodiment, the lifting belt 123 is an endless flat cable. And the flat surface of the lifting belt 123 is attached to one side surface of the driving shaft 121 and the driven shaft 122.

In one embodiment, 5 lifting belts 123 are wound around the driving shaft 121 and the driven shaft 122 in parallel along the longitudinal direction thereof. Along the height direction of the net cage body 11, 5 lifting belts 123 lift a cultivation cage 14 together. In other embodiments, one or more lifting belts 123 may be provided, and the number of the lifting belts 123 may be set according to actual needs.

Along the longitudinal direction of the net cage body 11, a plurality of lifting devices 12 with culture cages 14 are arranged at intervals, so that the culture density of the net cage 1 is improved in a limited culture space. Specifically, the driving shafts 121 are provided in plural and are inserted into the supporting bearings 1114 on the top frame 111 in a one-to-one correspondence. The driven shaft 122 is also provided in plurality and is inserted into the support bearings on the bottom frame 112 in a one-to-one correspondence.

Referring to fig. 4, the power device 13 includes a motor 131, a bottom plate supporting the motor 131, a driving gear 132, a pulley 133, and a locking mechanism. The motor 131 is disposed on the top of the cage body 11. The motor 131 has an output shaft whose tip is extendable and retractable with respect to the driven gear 124. The driving gear 132 is connected to the end of the output shaft, and thus can extend or retract along with the output shaft, so that the driving gear 132 is engaged with the driven gear 124 to rotate the driven gear 124, and further the driving shaft 121 is rotated. The pulley 133 is disposed under the base plate and slidably engaged with the sliding rail to allow the motor 131 to move along the top rail 1112, so that the driving gear 132 can be engaged with the driven gear 124 connected to each of the driving shafts 121.

In this embodiment, the pulley 133 includes an axle and a pulley body that rotates relative to the axle. A plurality of ribs are arranged around the wheel shaft along the radius direction of the wheel shaft. Two adjacent ribs form a groove.

The locking mechanism has an engaging portion that is rotatable to engage with or disengage from the groove, thereby stopping rotation of the pulley 133 or allowing rotation of the pulley 133 to fix the pulley 133 when the drive gear 132 is rotated.

Preferably, the power device 13 further includes a controller electrically connected to the motor 131 for controlling the start or stop of the motor 131. When feeding, cleaning or harvesting and the like are carried out daily, workers can control the motor 131 to start or stop through the controller, and then the raising or lowering movement of the cultivation cage 14 is controlled. When the cultivation cage 14 moves to the required working height, the worker controls the motor 131 to stop through the controller, and the cultivation cage 14 can stop to the current position.

The cultivation cage 14 is located in the cultivation space of the cage body 11 and fixed on the lifting belt 123, and can be lifted from the cultivation space to the working space along with the up-and-down movement of the lifting belt 123, so that the worker can work, or return to the cultivation space from the working space. In this embodiment, the aquaculture cage 14 is an abalone aquaculture cage for aquaculture of abalone. In other embodiments, the cage 14 may be used to culture other fish.

Specifically, the cultivation cage 14 is a rectangular box body having a back plate for fixedly connecting with the lifting belt 123. The back plate is positioned on the back of the farming cage 14. The front and the back of the cultivation cage 14 are based on the use state of the cultivation cage 14, the face facing the worker for the worker to operate is the front, and the face opposite to the front is the back. The front and back of the habitat 14 are defined as being identical to the same, unless otherwise specified below.

Preferably, the length of the back plate is equal to the side length of the driving shaft 121. The side length of the driving shaft 121 is equal to that of the driven shaft 122, and thus the length of the back plate is also equal to that of the driven shaft 122. Further, the distance between two adjacent cultivation cages 14 is equal to the side length of the driving shaft 121. Therefore, the distance between two adjacent cultivation cages 14 is equal to the side length of the driven shaft 122. In this embodiment, during normal cultivation, the anti-skid plates 1231 are spaced apart from the lifting belt 123 on the sea level, the length of the anti-skid plates 1231 is equal to that of the back plate, and the distance between two adjacent anti-skid plates 1231 is equal to the side length of the driving shaft 121 and the driven shaft 122. By adopting the design, the back plate and the antiskid plate 1231 can be attached to the side surface of the driving shaft 121 when the driving shaft 121 rotates, so that the situations of skidding and the like can not occur when the lifting belt 123 rotates, and the driving shaft 121 and the driven shaft 122 can also be ensured to synchronously rotate.

In this embodiment, the back plate has a protrusion protruding thereon, the lifting belt 123 has a groove corresponding to the protrusion, and the protrusion is engaged with the groove to suspend the cultivation box cage 14 on the lifting belt 123. Preferably, a connection reinforcing part is arranged between the cultivation box cage 14 and the lifting belt 123, so that the connection between the cultivation box cage 14 and the lifting belt 123 is firmer.

The front of the cultivation cage 14 is provided with a door capable of being opened and closed movably, and the back of the door is opened and closed towards the lifting belt 123. The box door is fixed through the buckle after being closed, and the opening angle of the box door is limited by cables on two sides when the box door is opened. A plurality of circular holes are formed in the cultivation cage 14 and used for water body exchange, and the pore size is manufactured according to the minimum size of the cultivated abalone.

The working principle of the inventive net cage 1 is as follows:

during normal farming, the farming cage 14 is located below sea level.

When the cultivation cage 14 needs to be lifted for bait casting, cleaning or harvesting, the power device 13 is moved to the lifting device 12 by the movement of the pulley 133, the output shaft of the motor 131 is adjusted to enable the driving gear 132 to be meshed with the driven gear 124, the pulley 133 is fixed by the locking mechanism, then the motor 131 is started to work, the driving shaft 121 is driven to rotate, and the motor 131 is stopped when the cultivation cage 14 in the cultivation space rises to the working space. The buckle of the box door of the cultivation box cage 14 is manually opened, then the box door is opened, the operations of feeding, cleaning, harvesting and the like are carried out, and the operation of the cultivation box cage 14 is completed. Then, the motor 131 is continuously started to enable the lifting belt 123 to continuously rotate, so that the next cultivation cage 14 is lifted to the working space, and the worker continuously works.

the net cage comprises a net cage body, a lifting device, a power device and a cultivation cage. The breeding cage is arranged on the lifting belt of the lifting device at intervals, the driving shaft of the lifting device is driven to rotate through the power device, the lifting belt is driven to rotate, and then the breeding cage rises to the top of the net cage from the breeding space to enable workers to work, or returns to the breeding space from the top of the net cage. Therefore, the net cage can be automatically lifted to the top of the net cage, and compared with the traditional manual lifting and placing of the cultivation cage, a large amount of manpower is saved, and the working efficiency is improved. The lifting device only lifts part of the cultivation cages to the sea level in the process of lifting the cultivation cages, so that the influence on organisms in the cultivation cages is reduced. And the structure of the net cage on the sea level is not influenced by the water depth, so the culture space can extend to a deeper place below the sea level, and the net cage is more suitable for deep and open sea culture.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A net cage, comprising:

the net cage body is of a frame type structure and is internally provided with a culture space;

the lifting device comprises a driving shaft arranged at the top of the net cage body, a driven shaft arranged at the bottom of the net cage body and a lifting belt wound on the driving shaft and the driven shaft;

the power device drives the driving shaft to rotate so as to drive the lifting belt to move up and down;

and the plurality of culture cages are fixed on the periphery of the lifting belt and can sequentially ascend to the top of the net cage body along with the up-and-down movement of the lifting belt.

2. The net cage according to claim 1, wherein the sections of the driving shaft and the driven shaft are both equilateral polygons; the lifting belt is an annular flat cable, and the flat surface of the lifting belt is attached to one side surface of the driving shaft and one side surface of the driven shaft.

3. The net cage according to claim 2, wherein the cultivation cage is provided with a back plate, the back plate is fixedly connected with the back surface of the lifting belt, the length of the side of the driving shaft and the length of the side of the driven shaft are both equal to the length of the back plate, and the back plate can be attached to the side surface of the driving shaft or the driven shaft.

4. A net cage according to claim 3, wherein the cultivation cages are arranged at intervals, and the side length of the driving shaft and the side length of the driven shaft are equal to the distance between two adjacent cultivation cages.

5. The net cage according to claim 1, wherein the lifting straps are provided at intervals at the outer circumference thereof with a plurality of fixing units for fixing the cages, the cages being fixed to the lifting straps by the fixing units.

6. A net cage according to claim 5, wherein said fixing units are trough-shaped, and protrusions are projected from said cage, and said protrusions cooperate with said fixing units to fix said cage to said lifting belt.

7. A net cage according to claim 5, wherein said cage is suspended from said lifting straps by said fixing units.

8. The net cage according to claim 1, wherein a plurality of lifting belts are wound side by side along a length direction of the driving shaft, and each of the cages is fixedly connected to the plurality of lifting belts.

9. The net cage according to claim 1, wherein a plurality of passageways parallel to each other are provided at intervals in a longitudinal direction of the cage body;

the lifting devices are arranged on two sides of each passageway.

10. A net cage according to claim 9, wherein the elevating means further comprises a driven gear provided on the drive shaft;

the power device comprises:

the motor is arranged at the top of the net cage body; the end of the output shaft of the motor can extend or retract relative to the driven gear;

the driving gear is connected to the tail end of an output shaft of the motor and can be meshed with the driven gear along with the extension or retraction of the output shaft to drive the driven gear to rotate so as to drive the driving shaft to rotate.

11. The net cage according to claim 9, wherein a sliding rail is provided in a longitudinal direction of the top of the cage body;

the bottom of the power device is also provided with a pulley, and the pulley is in sliding fit with the sliding rail so that the power device can move along the longitudinal direction of the net cage body.

12. A cage as claimed in claim 11 wherein the power plant further includes a locking mechanism which secures the pulley upon rotation of the drive gear.

13. The net cage of claim 9, wherein an upper surface of the passageway is lower than the drive shaft.

14. The mesh cage of claim 9, wherein the mesh cage body comprises:

the top frame comprises two top cross beams arranged at intervals and two top longitudinal beams connected between the two top cross beams; a plurality of supporting bearings for the driving shaft to penetrate are arranged on each top longitudinal beam at intervals;

the bottom frame comprises two bottom cross beams arranged at intervals and two bottom longitudinal beams connected between the two bottom cross beams; a plurality of supporting bearings for the driven shaft to penetrate are arranged on each bottom longitudinal beam at intervals;

the upright columns are arranged between the top frame and the bottom frame;

and the plurality of inclined struts are positioned between the top frame and the bottom frame, and each inclined strut is arranged between two adjacent upright posts.

15. The net cage according to claim 14, wherein said top frame further comprises at least one top frame center longitudinal disposed between two top cross members; a plurality of supporting bearings for the driving shaft to penetrate are arranged on the top frame middle longitudinal beam at intervals;

the bottom frame also comprises at least one bottom frame middle longitudinal beam arranged between the two bottom cross beams; and a plurality of supporting bearings for the driven shaft to penetrate are arranged on the bottom frame middle longitudinal beam at intervals.