JP6967786B2 - Shellfish recovery device in aquaculture baskets - Google Patents

Description

The present invention relates to a shellfish recovery device in a farmed cage, and relates to a shellfish recovery device suitable for taking out scallop shellfish from a farmed cage used for culturing scallop shellfish, for example.

Traditionally, scallops have been actively cultivated by raising the captured juveniles to a certain size, then storing the scallops in aquaculture cages such as so-called round cages and zabuton cages, growing them in the sea, and then catching them. It is done.
Aquaculture using a round basket is generally carried out by a multi-stage round basket in which a plurality of round baskets are connected, and the multi-stage round basket has a plurality of outer frames formed in a ring shape having a diameter of about 35 to 50 cm and a plurality of outer frames. A net-like member that connects the outer frames in a bellows shape is configured as a main member. Each net-like member is provided with an opening for inserting and removing shellfish, and is used by closing it with a string for closing when culturing in the sea.

Between each adjacent outer frame, a bellows-shaped net-like member is divided into a cylindrical shape of about 30 to 40 cm in the long axis direction in a stretched state, and 10 in one multi-stage round basket. About a number of round baskets are continuously provided. Scallops are housed inside this round basket, and the scallops are cultivated by hanging the integrated multi-tiered round basket into the sea.
Then, the scallops that have become adult shells inside the round basket after the lapse of a predetermined period are taken out from the above-mentioned opening and shipped or processed.
Alternatively, it may be necessary to increase or decrease the number of scallops to be accommodated according to the growth stage of the scallops. There is also. This replacement work may be performed multiple times from juvenile to adult.

The multi-stage round basket used for aquaculture depends on the number of baskets, but it is usually used, and the total length in the long axis direction is about 2 to 5 meters, and the scallops inside the round basket and the inside are overgrown. Including impurities such as seaweed, the weight of the scallops reached several tens of kilograms, and the work of recovering the scallops stuck to the round basket was a heavy labor. Therefore, in order to reduce the labor of collecting scallops, the invention described in Japanese Patent No. 5956666 has been proposed.

The invention described in the same gazette (a swinging device and a swinging method for swinging shellfish from a multi-stage aquaculture basket) provides a vibrating body that gives vibration to a placed aquaculture basket (as an example, a multi-stage round basket). The feature is that the aquaculture basket (round basket) is impacted by this vibrating body, and the shellfish adhering to the inside of the basket are shaken out and taken out.
In the specific invention, a rod-shaped or pipe-shaped vibrating body provided on a belt conveyor is arranged in parallel, and a round basket or the like is placed on the vibrating body to give vibration to the shellfish. The configuration of shaking out is adopted. According to this, it is possible to apply a large impact vibration to the round basket, and as a result, the scallops can be efficiently shaken off from the round basket and recovered.

Japanese Patent No. 59566666

As described in the same document, the swinging device described in Patent Document 1 employs a structure for collecting shellfish by applying a large vibration or impact to the round basket. Therefore, as a member that supports a rod-shaped or pipe material that is a vibrating body, it is said that vibration is absorbed by interposing springs at both ends thereof to prevent an excessive impact during recovery work. Further, in the embodiment of the same document, a drive source for applying vibration is installed near the center of the lower part of the device, and a round basket is mounted from the drive source via a transmission member such as a steel rod and a chain. It is described that vibration is applied to the placed support member.

However, supporting a vibrating body such as a pipe material with springs at both ends thereof, as in the swinging device described in Patent Document 1, has caused destabilization of the behavior of the vibrating body. For this reason, during operation, the vibrating body moves irregularly in the front-back, left-right, up-down directions, etc., causing destabilization of the behavior of the round basket placed on the vibrating body, and the impact force transmitted to the round basket is large. As a result, the separated shellfish (especially scallops) may be adversely affected, resulting in a decrease in commercial value.

In addition, at the stage of intermediate breeding, it is expected that the shellfish once taken out for replacement will be weakened, and the rate of dying during aquaculture will increase, which will contribute to the decrease in catch. Especially in recent years, the sea conditions have changed, and scallops that grow poorly or die are more likely to occur. ) Was required to develop a device that can work quickly without giving.
Further, the swinging device described in Patent Document 1 tends to generate a loud noise because the metal parts are structurally in contact with each other, and there are certain restrictions on continuous use indoors.

The present invention has been made in view of such circumstances, and can reliably perform the recovery work of shellfish cultivated in a multi-tiered round basket, does not give a great stress to the recovered shellfish, and at the time of use. It is an object of the present invention to provide a shellfish recovery device in aquaculture cages with less noise and excellent work efficiency.

The invention according to claim 1 is a shellfish recovery device in a culture cage in which shellfish are separated and recovered by shaking the culture cage containing the shellfish.
A skeleton frame on which the aquaculture cage can be placed, a swinging means that is provided substantially above the skeleton frame and shakes the entire aquaculture cage by contacting the side surfaces of the aquaculture cage from both sides, and the swinging during operation. It is equipped with a regulating means for limiting the movement of the means to a certain range, and the aquaculture cage placed on the skeleton frame is shaken by the swinging means to collect the shellfish contained in the aquaculture cage. It is characterized by doing so.

According to the second aspect of the present invention, in the above paragraph 1, the swinging means is a pair of pipe members or rod-shaped members arranged along the longitudinal direction of the skeleton frame, and these pipe members or rod-shaped members are the same. , The front connecting material and the rear connecting material erected between the front end portions and the rear end portions are integrally swingable, and these front connecting materials and rear connecting materials are configured. Is characterized in that a support shaft is provided in the center thereof, and these support shafts are pivotally supported by one side end portion and the other side end portion of the skeleton frame.

The invention according to claim 3 is characterized in that, in the above two paragraphs, a reinforcing member for improving rigidity is attached to each pair of pipe members or rod-shaped members constituting the swinging means.

According to a fourth aspect of the present invention, in any one of the above items 1 to 3, the regulating means limits the inward bending of the pair of pipe members or rod-shaped members which are the swinging means. It is characterized by being provided with a regulating member and a second regulating member that limits outward bending.

The invention according to claim 5 is characterized in that, in any one of the above items 1 to 4, the drive source of the above-mentioned swinging means is installed on the upper part of the skeleton frame.

In the invention according to claim 6, in any one of the above items 1 to 5, a belt conveyor that receives and conveys shellfish separated from the aquaculture cage and falls is installed below the skeleton frame. The transport surface of the belt conveyor is characterized in that it is provided at a position where a certain clearance is maintained with respect to the opening of the lower part of the aquaculture cage placed on the skeleton frame.

The invention according to claim 7 is characterized in that, in the above paragraph 6, a water supply means for supplying seawater or fresh water is provided on the transport surface of the belt conveyor.

The invention according to claim 8 is characterized in that, in the above paragraph 7, a cover member for closing a gap with the belt conveyor is attached near the lower portion of the skeleton frame.

According to the present invention, since it is configured so as not to transmit a shocking vibration to the culture cage during the collection work of the shellfish, it is possible to separate the shellfish without damaging them. In addition, since there are few parts where the metals come into contact with each other, noise during operation can be reduced, and indoor work can be performed, so that work efficiency can be improved.

It is a perspective view which shows the schematic structure of the shellfish recovery apparatus which concerns on one Embodiment of this invention. Similarly, it is a side view of the shellfish recovery device which concerns on one Embodiment of this invention. Similarly, it is a schematic perspective view of the shellfish recovery device according to the embodiment of the present invention, and is a diagram showing the structure of the main part of the device in which the X part of FIG. 1 is enlarged. Similarly, it is a schematic perspective view of the shellfish recovery device according to one embodiment of the present invention, and is a diagram showing the structure of the main part of the device in which the Y part of FIG. 1 is enlarged. Similarly, it is a schematic perspective view of the shellfish recovery device according to the embodiment of the present invention, which is a main part of the device in which the Y part of FIG. 1 is enlarged, and is a view seen from a different angle from FIG. 4A. Similarly, it is explanatory drawing which showed the regulation means which is the main part of the shellfish recovery apparatus which concerns on one Embodiment of this invention, and is the figure which enlarged the Z part of FIG. Similarly, it is an explanatory view of a partial cross section showing the positional relationship between the rocking means and the regulating means of the shellfish collecting device according to the embodiment of the present invention, and is a situation in which FIG. 2 is viewed from the LL line direction. It is a figure which showed. Similarly, it is an explanatory view of a partial cross section showing the positional relationship between the rocking means and the regulating means of the shellfish collecting device according to the embodiment of the present invention, and is a situation in which FIG. 2 is viewed from the LL line direction. It is a figure which showed. Similarly, it is an explanatory view of a partial cross section showing the positional relationship between the rocking means and the regulating means of the shellfish collecting device according to the embodiment of the present invention, and is a situation in which FIG. 2 is viewed from the LL line direction. It is a figure which showed. Similarly, it is an explanatory view of a partial cross section showing the positional relationship between the rocking means and the regulating means of the shellfish collecting device according to the embodiment of the present invention, and is a situation in which FIG. 2 is viewed from the LL line direction. It is a figure which showed. It is a figure which showed the state which the continuous stage round basket which connected the plurality of round baskets was placed on the shellfish recovery apparatus which concerns on one Embodiment of this invention, (a) is a side view, (b) is a plane. It is a figure. 11 (a) is an explanatory diagram schematically showing the state of the left and right pipe members or rod-shaped members in the swinging means of the shellfish recovery device according to the embodiment of the present invention, and FIG. 11 (a) shows the state at rest. 11 (b) shows the operating state in which the multi-stage round basket is placed. It is a schematic diagram of the modification of the shellfish recovery apparatus which concerns on this invention, (a) showed the case of the multi-stage round basket with a diameter of 500 mm, (b) the case of the multi-stage round basket with a diameter of 380 mm. It is a figure. Shellfish Recovery Device According to the Present Invention This is a diagram showing a modified example of the recovery device of the present invention, and is a schematic explanatory view showing the positional relationship between the skeleton frame and the belt conveyor.

Hereinafter, a preferred embodiment of the shellfish recovery device in the farm cage according to the present invention will be described in detail with reference to the attached drawings. FIG. 1 is a perspective view showing a schematic structure according to an embodiment of the shellfish recovery device of the present invention, FIG. 2 is a side view thereof, and FIGS. It is a schematic perspective view which shows the structure of a main part.

As shown in FIGS. 1 and 2, the shellfish collecting device 10 of the present embodiment includes a skeleton frame 12 forming the main body of the device, a rocking means 14 for rocking a farm cage, a regulating means 16, and separated shellfish. It is configured to include a belt conveyor 18 as a transporting means for carrying the water, a water supply means 19, and the like.
The recovery device 10 is provided with a swinging means 14 along the upper side of the horizontal portion 12A in the skeleton frame 12, and the aquaculture basket placed on the skeleton frame 12 is shaken by the swinging means 14 to be housed inside. It is designed to separate the shellfish that have been cultivated.

A belt conveyor (conveyor means) 18 and a water supply means 19 are provided below the skeleton frame 12, and the belt conveyor 18 advances from the horizontal portion 12A toward the inclined portion 12B, and the water supply means is on the belt conveyor 18. 19. Seawater is supplied by hoses and pumps (not shown).
The shellfish separated from the cage fall on a belt conveyor (transporting means) 18 covered with seawater, and the belt conveyor 18 guides the shellfish from the horizontal portion 12A to the inclined portion 12B and below the top of the inclined portion 12B. It is designed to be transported to a collection box (not shown) to be installed.

As shown in FIGS. 3 and 4, the swinging means 14 is a pair of pipe members 20A, 20B, and a front connecting member erected between the front end portion and the rear end portion of these pipe materials 20A, 20B. It is configured to include 22A, a rear connecting member 22B, and the like, and these pipe members 20A and 20B are integrally swingable above the skeleton frame 12 like a pendulum. The pipe materials 20A and 20B, which will be described in detail later, come into contact with the circumferential side surface of the aquaculture cage placed on the skeleton frame 12 and shake the entire aquaculture cage.

Support shafts 24A and 24B are provided in the center of the front connecting member 22A and the rear connecting member 22B, and these support shafts 24A and 24B are attached to one side end portion and the other side end portion of the skeleton frame 12. It is pivotally supported by bearings 26A and 26B, and swings like a pendulum together with pipe materials 20A and 20B above the frame frame 12.
Further, a motor 28 as a drive source is installed above the front side of the skeleton frame 12 via a portal portion 30.
A drive arm 32 is attached to the rotating shaft of the motor 28 in an eccentric state, and the lower end 32A of the drive arm 32 is connected to the end of the front connecting member 22A. As a result, the drive arm 32 reciprocates the front connecting member 22A like a seesaw by the rotation of the motor 28, and as a result, power is transmitted to the connected pipe members 20A and 20B to swing the front connecting member 22A to the left and right. ..

The motor 28 is installed so as to be above the belt conveyor 18 by a portal portion 30 provided near the boundary between the horizontal portion 12A and the inclined portion 12B (the end portion of the horizontal portion 12A), and is a box body. The whole is covered by 29. Therefore, it is difficult for water and the like contained in the aquaculture cage to enter the motor 28, failures can be reduced, and the motor 28 can be operated without being affected by the water supply means 19. In addition, the recovery device 10 can be freely installed and used by setting the installation location of the recovery device 10 to the seaside near the aquaculture site, and the work efficiency can be improved.

Further, plate-shaped flat irons 34A and 34B are attached to the lower surface of the outer peripheral portion of the pipe materials 20A and 20B along the longitudinal direction by welding or the like. That is, the flat irons 34A and 34B are reinforcing members that increase the section modulus of the pipe materials 20A and 20B and improve the rigidity of the pipe materials 20A and 20B as a whole. Attaching these flat irons 34A and 34B to the lower surface of the outer peripheral portion of the pipe materials 20A and 20B makes it possible to reduce the vertical bending (deflection) of the pipe materials 20A and 20B, while the lateral direction. Allows bending to. As a result, during the recovery work, the multi-tiered round basket inflated with shellfish or the like can be placed in a state where the outer peripheral surface thereof is wrapped by the pipe materials 20A and 20B.
The reinforcing member is provided on the lower surface of the outer peripheral portion of the pipe materials 20A and 20B as in the present embodiment, and if the bending in the left-right direction can be tolerated, the inside of the pipe materials 20A and 20B is reinforced. Alternatively, other means such as changing the shape of the pipe materials 20A and 20B may be used.

As shown in FIGS. 4A and 4B, the water supply means 19 includes a supply pipe 19A installed so as to vertically penetrate one end of the skeleton frame 12, a water guide hose, a pump, and the like (not shown). ing. The supply pipe 19A is provided with a plurality of supply holes 19B, 19B ... So that seawater or fresh water can be supplied from the supply holes 19B, 19B ... On the belt conveyor 18 by a water guide hose or a pump. It has become. As a result, a flow of water is generated on the belt conveyor 18, and when the shellfish is collected, the water on the belt conveyor 18 acts as a cushioning material to reduce the stress generated on the shellfish. ..
Further, as shown in FIG. 4B, in the belt conveyor 18, the conveyor belt 18A has V-shaped convex portions 18B, 18B, ... A belt is used, and the fallen shellfish are transported in the traveling direction by contacting the convex portions 18B, 18B, and so on.
Both ends of the belt conveyor 18 are formed flat, and the convex portions 18B, 18B ... Are provided on the exposed portions.

5 is an explanatory view showing the regulating means 16 which is the main part of the recovery device of the present embodiment and is an enlarged view of the Z portion in FIG. 1, and FIGS. 6 to 9 show the positional relationship between the swinging means 14 and the regulating means 16. It is an explanatory view of a partial cross section showing a situation where FIG. 2 is viewed from the LL line direction.
As shown in FIGS. 5 and 6, the regulating means 16 includes a pair of belt members 40A, 40B, a first regulating member 42A, 42B, a second regulating member 44A, 44B, and the like.

The lower ends of the belt members 40A and 40B are fixed to the side surface of the skeleton frame 12 so as to be adjustable in position by brackets 45A and 45B and mounting brackets 46A and 46B, and the upper end thereof is a pipe which is a swinging means 14. The materials 20A and 20B and the flat iron 34A and 34B are connected to each other by mounting brackets 47A and 47B.
As the material of the belt members 40A and 40B, a rubber band, a cloth belt, or the like can be used. With such a belt-shaped or band-shaped member, as shown in FIG. 7, when the rocking means 14 swings, the shellfish are regularly shaken without hindering the movement. Can be collected.

The first regulating members 42A and 42B and the second regulating members 44A and 44B are configured by arranging steel round bars in parallel at different heights, and brackets 45A and 45B that support both sides of each round bar. It is attached to the left and right sides of the skeleton frame 12 respectively.
As shown in FIG. 8, when the recovery device is in operation, the first regulating members 42A and 42B come into contact with the inner surfaces of the belt members 40A and 40B to regulate the movement of the belt members 40A and 40B, thereby regulating the movement of the belt members 40A and 40B. The materials 20A and 20B are designed to prevent the members 20A and 20B from bending inward more than necessary from the alternate long and short dash line to the inside like a solid line.

On the other hand, the second regulating members 44A and 44B are provided at positions in contact with the outer surfaces of the belt members 40A and 40B, and the pipe members 20A and 20B are bent outward to the left and right, contrary to the first regulating members 42A and 42B. Is restricted. That is, when the motor 28 rotates, the drive arm 32A reciprocates, and the pipe materials 20A and 20B follow the pipe materials 20A and 20B while moving the front connecting material 22A up and down like a pendulum. In the vicinity of the center of the recovery device 10, the influence / action of the centrifugal force is the largest, and the amount of deflection to the outside is large.

Therefore, as shown in FIG. 9, the belt members 40A and 40B and the second regulating members 44A and 44B are used to prevent the pipe materials 20A and 20B from bending more than necessary to the outside. That is, by applying the tension of the belt members 40A and 40B to the pipe materials 20A and 20B, the bending in the outward direction is limited to an appropriate amount.

Further, as described above, the pipe materials 20A and 20B are welded with flat steel 34A and 34B as reinforcing members along the lower surface thereof, and this member particularly improves the rigidity in the vertical direction. Therefore, it is possible to prevent careless movement of the pipe materials 20A and 20B in the vertical direction due to insufficient rigidity. As a result, irregular force in the vertical direction is not applied to the multi-tiered round basket in which the shellfish are housed, and the multi-tiered round basket is wrapped from the side and shakes from the left and right. , Shellfish are not subjected to vertical vibration and can be separated without giving stress.

In this way, by suppressing the movement of the pipe materials 20A and 20B that swing the culture cage within a certain range, it is possible to prevent unnecessary impact and vibration from being applied to the culture cage during the shellfish recovery work. , The shellfish that are separated and fall on the belt conveyor 18 are not damaged.
In the present embodiment, the regulating means 16 is provided at one place for each of the left and right pipe materials 20A and 20B, but the number may be increased depending on the length of the pipe material. For example, if the lengths of the pipe materials 20A and 20B are around 4 m, one place may be used, but if the length exceeds 5 m, two places may be installed, depending on the length and usage status of the pipe material. Taking this into consideration, the effect of suppressing bending can be obtained by increasing the number of installation locations.

FIG. 10 shows a state in which a multi-stage round basket 1 in which a plurality of round baskets are connected as a culture basket is placed on the recovery device 10 of the present embodiment, of which FIG. 10 (a) is a side view. 10 (b) and 10 (c) are plan views. As shown in these figures, the multi-stage round basket 1 is placed on the left and right skeleton frames 12 in a state of being surrounded by the swinging means 14 of the recovery device 10, while the side surface of the round basket 1 is placed. The pipe materials 20A and 20B are wrapped around the pipe material and are in contact with each other from both sides. By operating the rocking means 14 in this state, the pipe materials 20A and 20B are swung up, down, left and right, and the entire multi-stage round basket 1 is shaken from the side surface, so that the shellfish housed inside can be recovered. Will be done.

At the time of recovery work, the left and right pipe materials 20A and 20B are rotatably supported by bearings 26A and 26B at the front and rear of the skeleton frame 12, so that the swinging motion is violent. It is performed regularly by swinging from side to side like a pendulum. In addition, since the pipe materials 20A and 20B are provided with the regulating means 16 and the flat iron 34A and 34B for limiting the amount of bending thereof, as shown in FIG. 10 (c), the pipe materials 20A and 20B It is possible to prevent unnecessary bending inward and outward, and unnecessary movement in the vertical direction. As a result, shocking vibration is not applied to the multi-stage round basket 1, and it is possible to prevent damage to the separated shellfish. In addition, since there is little contact between metal members, noise during operation can be reduced.

11A and 11B are explanatory diagrams schematically showing the states of the left and right pipe materials 20A and 20B, and the relationship between the swinging means 14 and the regulating means 16, and FIG. 11A shows a stationary state, FIG. 11; (B) shows the operating state in which the multi-stage round basket is placed. As shown in FIG. 11A, when the swinging means 14 is stopped, no outward force acts on the pipe members 20A and 20B in contact with the side surfaces of the multi-stage round basket. It maintains an almost linear state.

On the other hand, as shown in FIG. 11B, when the rocking means 14 is in operation, the pipe materials 20A and 20B swing in the left-right direction like a pendulum, so that they hit the side surface of the multi-stage round basket. The pipe materials 20A and 20B in contact with each other are bent so as to be curved outward depending on the weight of the contents thereof. At this time, in the state where the multi-stage round basket is placed on the skeleton frame, the pipe materials 20A and 20B are brought into contact with each other from the side surface so as to be held, and the whole is shaken, so that shocking vibration is generated. It will not be transmitted to the round basket. That is, the excessive external force is released by bending the pipe materials 20A and 20B outward, and the round basket becomes lighter in the process of the shellfish such as scallops shaking out, so that the bending of the pipe materials 20A and 20B is reduced. It gradually returns and can continuously apply appropriate force to the round basket.
For this reason, it is possible to significantly reduce the stress generated in the shellfish when it is separated from the multi-stage round basket. In addition, as described above, since the surface of the transport surface 18A of the belt conveyor 18 which is the transport means is covered with seawater, this water acts as a cushioning material to softly catch the falling shellfish and at the same time. It protects against dryness and does not cause damage.

FIG. 12 is a schematic view showing a recovery device of a modified example of the present embodiment, and is a diagram showing a positional relationship with a round basket in which recovery work is performed. Of these, FIG. 12 (a) shows the case of the multi-stage round basket 2 having a diameter of 500 mm, and FIG. 12 (b) shows the case of the multi-stage round basket 3 having a diameter of 380 mm. Basically, if the diameters of the round baskets are different, the collection work cannot be performed by the same device due to the relationship with the opening width of the frame.

Therefore, by partially changing the shape of the skeleton frame, the width dimension A of the opening and the height dimension B from the opening to the belt conveyor 18 are made to be substantially constant. Specifically, in the skeleton frame 13 of FIG. 12A, the upper end portion 13A is bent outward, while in the skeleton frame 15 of FIG. 12B, the upper end portion 15A is bent inward. This makes it possible to easily adapt the size (diameter) of the round basket to be used without changing the overall dimensions of the recovery device.
As a method of changing the width dimension A of the opening, a member slidable in the lateral direction is detachably attached near the upper end portion, and the relative positions thereof are changed between the plate material and the upper end portion. It is also possible to accommodate various sizes of multi-tiered round baskets. According to this, one recovery device can handle round baskets of various diameters.

The height dimension B from the opening of the round basket is about 10 cm to 15 cm, and this height dimension B is a dimension considered so that the lower surface of the round basket does not interfere with the belt conveyor 18.
In addition, since each of the multi-stage round baskets 2 and 3 has a considerable weight in the state where shellfish are housed, the lower surface of the round baskets 2 and 3 protrudes below the skeleton frame and sinks. However, the height dimension B is set in consideration of this point.

Further, as shown in FIGS. 12 (a) and 12 (b), the angle θ between the vertical axis and the tangents of the pipe members 20A and 20B in the multi-stage round baskets 2 and 3 is about 30 to 40 °. As described above, the width dimension A of the opening is set. This angle θ is an angle set for efficiently guiding and collecting the separated and falling shellfish onto the belt conveyor 18. This is because the larger the angle, the higher the possibility that the shellfish will fall out, and conversely, the smaller the angle, the higher the possibility that the opening of the round basket will protrude from the width dimension A and spill out of the device.
Further, by changing the inward bending amount and direction at the upper end portion 15a shown in FIG. 12B according to the size of the round basket, not only the round basket 3 having a diameter of 380 mm but also circles having other diameters are used. It can easily handle baskets and has the advantage of requiring minimal changes.

13A and 13B are views showing a modified example of the recovery device, of which FIG. 13A is a schematic explanatory view showing the positional relationship between the skeleton frame 12 and the belt conveyor 18, and FIG. 13B is a schematic explanatory view. It is a schematic explanatory drawing which shows the state on the belt conveyor 18 in a plane.
Cover members 50A and 50B are attached to the skeleton frame 12 shown in FIG. 13A to close the gap formed between the skeleton frame 12 and the belt conveyor 18 installed below the frame frame 12.
The cover members 50A and 50B prevent shellfish falling from the multi-stage round basket 4 from entering the gap created between the skeleton frame 12 and the belt conveyor 18 during the recovery work, and are on the belt conveyor 18. It has the effect of reliably guiding the shellfish and preventing them from spilling. This makes it possible to collect shellfish without waste. It is especially effective for small-sized shellfish.
As shown in FIG. 13B, the fallen scallops and other shellfish are protected from drying by the water flow generated on the transport surface 18A of the belt conveyor 18, and all of them are gathered near the center by the convex portion 18B and do not remain. It is carried in the transport direction.

According to the present embodiment configured as described above, the swinging means is configured to prevent irregular operation and to prevent impact vibration or force from being applied to the multi-stage round basket. It is possible to recover shellfish without damaging them. Therefore, the collection work can be performed without deteriorating the commercial value of shellfish such as scallops.
In addition, even when the shellfish are once taken out at the stage of intermediate breeding, the shellfish can be separated and recovered without impact, so that the rate of mortality of the cultivated shellfish can be reduced.
Furthermore, since the noise during operation is suppressed, it can be used indoors and can be used continuously.

The present invention can be used in the fields of fishery and fishery processing, which are engaged in shellfish aquaculture business.

1 2 3 4 Multi-stage round basket 10 Shellfish recovery device 12 13 15 Frame frame 12A Horizontal part 12B Inclined part 13A 15A Upper end part 14 Swinging means 16 Regulatory means 18 Belt conveyor (conveying means)
18A Conveying surface 18B Convex part 19 Water supply means 19A Supply pipe 19B Supply hole 20A 20B Pipe material 22A Front connecting material 22B Rear connecting material 24A 24B Support shaft 26A 26B Bearing 28 Motor 29 Box body 30 Gate shape 32 Drive arm 34A 34B Flat iron 40A 40B Belt member 42A 42B First regulation member 44A 44B Second regulation member 45A 45B Bracket 50A 50B Cover member

Claims (8)

It is a shellfish recovery device in aquaculture cages that separates and collects shellfish by rocking the shellfish cage.
A skeleton frame on which the aquaculture cage can be placed, a swinging means that is provided substantially above the skeleton frame and shakes the entire aquaculture cage by contacting the side surfaces of the aquaculture cage from both sides, and the rocking means during operation. Equipped with regulatory measures to limit the movement of
A shellfish recovery device in aquaculture cages, characterized in that the aquaculture cages placed on the skeleton frame are shaken by the rocking means to separate the shellfish contained in the aquaculture cages. The swinging means is a pair of pipe materials arranged along the longitudinal direction of the skeleton frame, and these pipe materials are erected between the front end portions and the rear end portions thereof. A support shaft is provided in the center of each of the front connecting material and the rear connecting material so as to be integrally swingable by the partial connecting material and the rear connecting material. The shellfish recovery device in a farm cage according to claim 1, wherein the skeleton frame is pivotally supported at one side end portion and the other side end portion. The shellfish recovery device in an aquaculture basket according to claim 2, wherein a reinforcing member for improving rigidity is attached to each pair of pipe materials constituting the rocking means. The regulating means includes a first regulating member that limits the inward bending of the pair of pipe members that are the swinging means, and a second regulating member that limits the outward bending. The shellfish recovery device in the aquaculture basket according to any one of claims 1 to 3. The shellfish recovery device in a farm cage according to any one of claims 1 to 4, wherein the driving source of the rocking means is installed on the upper part of the frame. Below the skeleton frame, a belt conveyor that receives and transports shellfish separated from the skeleton frame and falls is installed, and the transport surface of the belt conveyor is an opening at the bottom of the skeleton frame placed on the skeleton frame. The shellfish recovery device in aquaculture cage according to any one of claims 1 to 5, wherein the portion is provided at a position where a certain clearance is maintained. The shellfish recovery device in an aquaculture basket according to claim 6, wherein a water supply means for supplying seawater or freshwater is provided on the transport surface of the belt conveyor. The shellfish recovery device in a farming basket according to claim 7, wherein a cover member for closing a gap with the belt conveyor is attached near the lower portion of the skeleton frame.

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