JP7199092B2 - shellfish extractor - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law [Test run] [Exhibition briefing]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shellfish take-out device , and more particularly to a shellfish take-out device and the like capable of efficiently taking out shellfish from net baskets used for shellfish farming or the like.

In the field of scallop farming, there has been a high demand for labor saving, but there are few technical proposals to solve it. In particular, there is a considerable amount of work required to remove the shellfish from the culture basket, such as removing and reinserting the shellfish from the culture basket as the shellfish grows, and finally removing the shellfish from the basket for shipment. , this take-out work is quite heavy work partly because the basket is quite heavy. However, there has not existed a technique that can provide the facilitation, acceleration, and labor reduction of the work as a highly practical one.

Therefore, the applicant of the present application, based on the state of the prior art, can efficiently take out the target object from the culture basket, speed up the work, and greatly reduce and save the labor of the operator. previously disclosed a highly practical object pick-up device (Patent Document 1 below).

This object extracting apparatus comprises a transport unit for continuously transporting baskets, and a swinging unit for supporting and swinging the baskets transported thereby from below. and a basket locking means provided on an endless track. and a rocking driving means for rocking the supporting means, and the supporting means is configured so that the object ejected from the opening by the rocking can drop. As a result, the shellfish can be efficiently taken out of the culture basket, and the effect of speeding up the work and reducing the labor of the worker compared with the conventional technique was obtained.

Japanese Unexamined Patent Application Publication No. 2017-139987 "Object Extraction Apparatus, Object Extraction Method, and Object Extraction and Sorting Method"

However, the technique disclosed in the above document also has points that require improvement. The main problems are as follows.
a. The operation of bringing the basket, which has a weight corresponding to the contents, to a predetermined height and hooking it to the basket locking means must be done manually, which is considerably hard work.
b. Although it is more compact than conventional equipment, it is still quite large, making it difficult for small businesses to introduce it, and there is a demand for a more compact size.
c. Regardless of the business scale of the operator, there is a demand for compactness and flexibility that can be used at any time even in a considerably narrow place, whether on board or on land.
d. To provide more convenience if a simpler method can be used for providing a basket to an apparatus.
e. There is a demand for a device that can simplify the configuration of the device itself, reduce the manufacturing cost and offer price, and reduce the maintenance burden.

Therefore, the problem to be solved by the present invention is that, based on the history of the prior art, it is possible to take out shellfish from a culture cage more efficiently than the technology disclosed in Patent Document 1 by the applicant, and to speed up the work. At the same time, it is possible to greatly reduce and save the labor of workers, and it is compact and flexible, does not require a large installation area, is highly practical, and leads to a reduction in manufacturing costs. to provide.

As a result of studying the above problems, the inventors of the present application have found that simply placing the baskets on the conveying section without providing a basket locking means at the upper position automatically receives the sifting action to smoothen the shellfish. We have come up with a system and configuration that can be taken out, repeated demonstration tests while repeatedly making prototypes of the device, and have completed the present invention based on such research and development. That is, the inventions claimed in the present application, or at least the inventions disclosed as means for solving the above problems, are as follows.

[1] A shellfish extracting device for extracting shellfish from a cage for shellfish cultivation (pearl net, hereinafter also simply referred to as "net") having an approximately quadrangular pyramid shape and openings provided on oblique ridges. ,
a conveying unit that supports and conveys the net from below;
a net holding portion that holds down the net conveyed by the conveying portion from above;
a hitting unit that continuously hits the net conveyed by the conveying unit from below;
a vertical driving means for vertically driving the striking part;
The conveying unit includes a pair of left and right endless tracks on which the net is placed with its opening facing downward,
A shellfish picking-out device, comprising a transport driving means for driving the endless track.
[2] A pair of left and right net pressing portions are provided in the same direction as the driving direction of the endless track, and the net pressing portion and the endless track are spaced apart from each other to the extent that a net can be inserted therebetween. The device for taking out shellfish according to [1], characterized in that:
[3] The shellfish extracting device according to any one of [1] and [2], wherein the net holding portion has a cushioning structure that absorbs the impact of the striking portion.
[4] The device for taking out shellfish according to [3], wherein the buffer structure is a mechanism that converts the impact received by the net holding portion into a swinging motion.
[5] Shellfish extraction according to any one of [1], [2], [3], and [4], characterized in that a pair of left and right striking portions are provided directly below the net pressing portion. Device.

[6] [1] and [2], characterized in that both the net holding portion and the striking portion have a bar structure (hereinafter, the former is also referred to as a "holding bar" and the latter as a "hitting bar"). , [3], [4], and [5].
[7] Any one of [1], [2], [3], [4], [5], and [6], wherein the endless track is provided with an elevation angle toward the conveying direction of the net. The device for taking out shellfish according to .
[8] [1], [2], [3], [4], [5], and [6], characterized by comprising a waiting part for waiting the net in a predetermined posture before the shellfish extraction process. ] and [7].
[9] [1], [2], [3], and [4], wherein the end of the net holding portion on the net supply side is formed with an upward curve so as to facilitate introduction of the net. , [5], [6], [7], and [8].
[10] [1], [2], [3], [ 4], [5], [6], [7], [8], and [9].

[11] [1], [2], [3], [4], [5], [1], [2], [3], [4], [5], [ 6], [7], [8], [9], shellfish extraction device according to any one of [10].
[12] [1], [2], [3], [4], and [5], characterized in that a sorting unit for sorting out the shellfish by size is provided below the endless track. ], [6], [7], [8], [9], [10], and [11].
[13] The sorting unit is characterized by comprising a sieve part having one or more sieve structures for sorting shellfish by size, and a sieve part driving means for vibrating the sieve part, [12 ].
[14] [1], [2], [3], [4], characterized by comprising a shellfish transport path for receiving the shellfish discharged from the net and dropping and transporting the shellfish to a transport destination; [5], [6], [7], [8], [9], [10], [11], [12], and [13].
[15] The shellfish pick-up apparatus according to [14], wherein the shellfish transport path is provided with a depression angle in the supply direction.

[16] Shellfish extraction according to [14] and [15], wherein the shellfish transport path is provided with at least one of vibration means for vibrating the shellfish transport path and flow-down means for causing water to flow down. Device.

Since the shellfish pick-up apparatus of the present invention is constructed as described above, when it is applied to shellfish farming work, shellfish can be picked out more efficiently from the farming cage (net) than in the above-described prior art. This can speed up the work and greatly reduce the labor of the operator and save labor. Moreover, it is compact and does not require a large installation area, and is highly practical because it is flexible enough to be installed and used at any time even in a narrow space. Moreover, manufacturing costs can be reduced.

The work of removing shellfish from nets in shellfish farming is done in various work forms depending on the work place, its width (narrowness), the relationship with the work before and after the work, and the like. The apparatus of the present invention has versatility that allows it to be adapted to these various work forms. In addition, since the apparatus of the present invention has a simpler structure than the above-described prior art, the cost can be further reduced. Moreover, since it can be used in combination with existing devices such as washing machines and sorting machines, the existing devices are not wasted and can be easily introduced. In fact, many workers in the shellfish farming industry have already installed washing machines and sorting machines. is high.

Although the main object of the apparatus of the present invention is removal of shellfish from pearl nets used for shellfish farming, a sorting unit may be added to this. In this case, the work of removing the shellfish from the net and sorting the shellfish according to their size can be automatically carried out, which further improves the work efficiency, reduces work labor, and speeds up the work. The sorting unit can be integrated into the entire apparatus, or can be detachable as required, and can provide specifications suitable for usage.

In addition, it goes without saying that the device of the present invention has the following features in comparison with the technology disclosed in the above document.
A. To considerably reduce labor by eliminating the need to move a net, which is heavy depending on the contents, to a predetermined height and hang it on a device.
B. It can be provided in a compact size and is easy to introduce even for small businesses.
C. Regardless of the business scale of the business operator, it can be installed and used in a considerably narrow place regardless of the location, whether on board or on land, and has high versatility.
D. The method for providing the net to the device should be simple and convenient.
E. The device configuration is simpler, the manufacturing cost and supply price can be reduced, and the maintenance burden can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows notionally the basic composition of this invention shellfish extraction apparatus. FIG. 2 is a plan view showing a main part of a specific configuration example of the shellfish take-out device shown in FIG. 1; Fig. 2c is a plan view showing an example of use of Figs. 1-2a; Figure 2b is an elevational view of the example arrangement shown in Figures 1-2a; 1-3a is an elevational view (part 1) sequentially showing the operation of the configuration example shown in FIG. 1-3a; FIG. 1-3a is an elevational view (No. 2) sequentially showing the operation of the configuration example shown in FIG. 1-3a; FIG. FIG. 3B is an elevational view (No. 3) sequentially showing the operation of the configuration example shown in FIGS. 1-3a; FIG. 11 is an elevational view showing the action of the shellfish take-out device of the present invention provided with a cushioning structure (No. 1). It is an elevation view showing the operation of the device for taking out shellfish of the present invention provided with a cushioning structure (No. 2). Figures 1-4a, etc., illustrate the action of the cushioning structure; 1. It is explanatory drawing which shows an effect|action in the shellfish extraction apparatus shown in FIG. 1 in order (the 1). It is explanatory drawing which shows the effect|action in the shellfish extraction apparatus shown in FIG. 1 in order (the 2). It is explanatory drawing which shows an effect|action in the shellfish extraction apparatus shown in FIG. 1 in order (the 3). It is explanatory drawing which shows the effect|action in the shellfish extraction apparatus shown in FIG. 1 in order (part 4). It is explanatory drawing which shows the effect|action in the shellfish extraction apparatus shown in FIG. 1 in order (No. 5). Fig. 2 is a perspective view showing the configuration of a net to which the device for taking out shellfish of the present invention is mainly applied.

FIG. 2 is an explanatory view conceptually showing the basic configuration of the inclined shellfish take-out device of the present invention. 1 is an explanatory view conceptually showing the basic configuration of the shellfish take-out device of the present invention having a standby section. FIG. FIG. 2 is an explanatory view conceptually showing the basic configuration of the shellfish take-out device of the present invention having restricting means. FIG. 2 is an explanatory view conceptually showing the basic configuration of the device for taking out shellfish of the present invention having a post-treatment net placing section. FIG. 2 is an explanatory view conceptually showing the basic configuration of the shellfish extraction device of the present invention having a sorting unit. It is explanatory drawing which shows the example of the sieve structure with which a sorting unit is provided. 1 is an explanatory view conceptually showing the basic configuration of a shellfish take-out apparatus of the present invention having a shellfish transport path; FIG. It is explanatory drawing which shows the specific structural example of a shellfish conveyance path. FIG. 2 is an explanatory diagram conceptually showing the basic configuration of the shellfish take-out apparatus of the present invention having a shellfish transport path and a sorting unit. It is a photograph figure which shows this invention Example (front view). 18 is another photographic view of the embodiment shown in FIG. 17 (rear view); FIG. FIG. 18 is another photographic view of the embodiment shown in FIG. 17 (left side view); FIG. 18 is another photographic view of the embodiment shown in FIG. 17 (right side view); FIG. 18 is another photographic view of the embodiment shown in FIG. 17 (top view); 18 is another photographic view of the embodiment shown in FIG. 17 (bottom view); FIG. FIG. 18 is a photographic view of a configuration in which the embodiment shown in FIG. 17 is equipped with a sorting unit;

The present invention will be described in detail below with reference to the drawings.
FIG. 1 is an explanatory diagram conceptually showing the basic configuration of the shellfish extraction device of the present invention. As shown in the figure, the shellfish extraction device 10 is a cage (pearl net, net) N for shellfish farming, which has a shape shown in FIG. A shellfish extracting apparatus for extracting shellfish from a shell comprising a conveying section 1 for supporting and conveying a net N from below, a net holding section 2 for holding down the net N conveyed by the conveying section 1 from above, and a conveying section 1. and a vertical drive means 3 for vertically driving the striking section 4. The conveying section 1 is configured such that the net N moves downward through the opening Q thereof. The main configuration is provided with a pair of left and right endless tracks 5 placed facing toward and a transport drive means 6 for driving the endless tracks 5 .

According to the shellfish pick-up device 10 with such a configuration, the endless track 5 is circulated R by the transport driving means 6 , and the net N containing the shellfish is placed on the endless track 5 with the opening Q thereof directed downward. As a result, the net N is conveyed while being supported from below by the conveying section 1. At this time, the net N is held from above by the net holding section 2 and its vertical position is regulated. will be transported by On the other hand, the striking part 4 is vertically driven V by the vertical driving means 3, and the net N is conveyed by the driving means while being held upward by the net holding part 2, and the upward movement is suppressed. The shells are continuously beaten from below by the hammering part 4, whereby the shells contained in the net N are shaken up, down, forward, backward, left and right, and the shells are pushed through the opening Q facing downward. The shellfish jumps out of the net N, thereby taking out the shellfish from the net N.

A belt conveyor can be suitably used as the endless track 5, but it is not limited to this, and an endless track having another structure may be used. For the configuration of the net N to which the device 10 of the present invention is mainly applied, see FIG. 7 to be described later. In addition, reference numeral 9 in the figure indicates an optional supporting portion for forming an integral structure including the above components, and is not an essential component (the same applies to the following figures). When the support portion 9 is provided, its specific form may be a housing, legs, or any other suitable form.

1-2a is a plan view showing a main part of a specific configuration example of the shellfish extracting device shown in FIG. 1. FIG. again,
1-2b is a plan view showing an example of use of FIG. 1-2a. As shown in these figures, the shellfish extraction device 10 has a pair of left and right net holding portions 2 arranged in the same direction as the driving direction of the endless track 5, and the net holding portion 2 and the endless track 5 have a net N between them. It is a configuration in which they are spaced apart to the extent that they can be inserted. It should be noted that the element denoted by reference numeral 5M in each figure is a restricting means, which will be described later with reference to FIG. 10 and the like. Although not shown in the basic configuration shown in FIG. 1, it is desirable to provide a restricting means 5M as in the configuration example of this figure (details will be described later).

With such a configuration, the net N is introduced into the apparatus 10 so that the left and right ends thereof are inserted between the left and right pair of net holding portions 2 and the endless track 5, and the net holding portion is inserted. Receiving position control from above by the portion 2, receiving the revolving drive of the endless track 5, and being drawn between the net pressing portion 2 and the endless track 5, it is transported while maintaining a stable posture. be done. In addition, when the net N is inserted, the shellfish inside is (is supposed to be) near the center of the inside, and this part is just the space between each pair of endless tracks 5 and the net holding part 2 is formed. The net N is pulled in without any problem.

Further, the specific configuration of the net pressing portion 2 is determined by the deformation resistance, strength, configuration, and so on, which enable it to maintain a stable posture of the net N throughout the transportation of the net N while it is continuously subjected to impacts from the striking portion 4. Any form or the like may be used as long as it has a structure or the like. Although the figure shows a thin bar shape, other shapes may be used.

Further, as shown in the figure, the hitting portion 4 can be configured to be provided in a left and right pair, like the endless track 5 and the net pressing portion 2 . The hitting part 4 hits the conveyed net N from below, and it is desirable that the hitting range is a wide range to some extent. Furthermore, it is desirable that the net N be hit effectively over a wide range in the transport direction of the net N for as long as possible during the transport time. In the illustrated example, the hitting part 4 is configured as a hitting body having a planar shape of a substantially rectangular parallelepiped elongated in the conveying direction.

The material, mass, strength, structure, shape, etc. of the striking portion 4 are not particularly limited. As long as it is possible to efficiently and smoothly give a shock to the net N containing the shellfishes to the extent that the shellfishes inside can be shaken and jumped out from the opening Q, and the shellfishes inside can be applied. Any specification is acceptable as long as it can give an impact that does not damage or destroy it. Also, the hitting part 4 is provided parallel to the endless track 5 and the net pressing part 2 . This is because the impact caused by the vertical movement of the vertical drive means 3 is generated over the entire striking portion 4 as much as possible, that is, the impact energy is sufficiently exerted on the net N.

The vertical drive of the striking part 4 by the vertical drive means 3 can also be designed so that the shellfish can be taken out from the net N efficiently. Specifically, the speed of one hit, the stroke of the hit (the distance from touching the net N to the farthest position, i.e., the magnitude of the amplitude), the short time between hits, i.e., the frequency of hits, These parameters can be appropriately examined to achieve the optimum impact for efficiently taking out the shellfish from the net N in a short period of time without damaging or destroying them.

FIG. 1-3a is an elevational view of a portion of the example configuration shown in FIG. 1-2a. again,
1-3b to 1-3d are elevation views (parts 1, 2, 3) sequentially showing the operation of the configuration example shown in FIG. 1-3a. As shown in these figures, in addition to the structure already described, the shellfish extracting apparatus 10 is provided with a pair of left and right striking parts 4 which are moved up and down. It is desirable that the vertical motion V of the pair of left and right striking parts 4, 4 should be the same force and stroke, and synchronized in timing. That is, it repeats the process of raising and lowering with the same force and stroke at the same time, thus hitting the lower part of the net N at the same time and loosening it at the same time.

In staggered strikes or strikes with imbalance in force or stroke, a strike made against one point of the net N is absorbed by another point, i.e., the striking force escapes, thereby causing the net N This is because there is a possibility that the shellfish inside will not be shaken as intended even if they move violently, and will not be able to obtain an effective shaking action.

In addition, the position where the striking part 4 is provided should of course avoid the vicinity of the opening Q of the net N, which is not an obstacle for the shellfish to come out, but the sifting due to cooperation with the suppressing action from above by the net pressing part 2 It is desirable that the position be such that the (breaking) action can be sufficiently obtained. In other words, the resistance force that can receive the striking force from below by the striking part 4 from above with a certain amount of force, but allows the striking force to sufficiently reach the net N as a whole is the striking force. It is a structure that can be played against the striking force by the part 4. This can be realized by the net hold-down part 2 .

That is, it is desirable that the striking part 4 is provided below the net pressing part 2 . Here, the "lower position" is a positional relationship in which the striking force of the striking portion 4, which is driven vertically by V, can be received with resistance by the net holding portion 2, regardless of the degree of difference, without whiffing. be. As long as this is the case, the hitting part 4 is not necessarily positioned directly below the net pressing part 2, but may be positioned slightly off. In short, the striking force (impact) of the hitting portion 4 received by the net pressing portion 2 to some extent is transmitted to the net N via the net pressing portion 2, which acts as a sifting action. I wish I could.

However, as shown in FIG. 1-3a, etc., it is more desirable that the hitting portion 4 is provided at a position directly below the net pressing portion 2. FIG. With this configuration, the striking force of the striking portion 4 is sufficiently transmitted to the net N through the net pressing portion 2 without whiffing, and the swaying action on the net N can be sufficiently exerted. This is because a sufficient action for taking out shellfish can be obtained. In terms of durability, it is useful to provide a structure for alleviating the impact that the net holding portion 2 receives from the striking portion 4, but this will be described later.

As shown in the figure, in the shellfish extracting device 10, both the net holding portion 2 and the hitting portion 4 can be of bar structure. The former is a so-called holding bar, and the latter is a so-called hitting bar. Any bar structure can be easily formed using an appropriate material such as metal or synthetic resin.

1-3b, 1-3c, and 1-3d, the operation of the shellfish extraction device 10 will be described. The net N inserted between the endless track 5 and the net holding portion 2 constituting the transport portion 1 is transported while being hit by the vertical movement V of the lower hitting portion 4 (FIGS. 1-3b, 1 -3c). The hitting part 4 strikes in the direction of the net holding part 2 above the net N with the end of the net N sandwiched therebetween. Stopping is also performed on the upper side of the net N whose horizontal position is regulated by the two left and right net retainers 2, 2 (Fig. 1-3c).

In other words, when hit by the hitting part 4, the upper part of the net N does not move upward in the hitting direction without restriction because it is held down by the net holding parts 2, 2. Any movement toward the net N is subject to upward recoil against it by the upper side of the net N itself, but rather exerts a downward force on the net N and the shellfish it contains as a whole. Upon receiving this downward force, the shellfish S inside jumps out through the opening Q of the net N, and shellfish extraction is realized (Figs. 1-3c and 1-3d).

Such an action is repeatedly caused by the repeated vertical movement V of the hitting part 4, and the shellfish S inside the net N are efficiently ejected from the opening Q, and the shellfish can be quickly and smoothly taken out (Fig. 1-3d). . This method of retrieving objects by pressing from above with the net holding portion 2 and striking from below with the striking portion 4 is epoch-making, and compared with the method of the above-described object retrieving apparatus proposed by the applicant, the net N 10 or more scallops can be taken out in a fairly short period of time without leaving any scallops inside, which is very practical.

FIGS. 1-4a and 1-4b are elevation views (1 and 2) showing the operation of the shellfish retrieval device of the present invention provided with a cushioning structure. again,
1-4c is an illustration showing the action of the cushioning structure according to FIG. 1-4a and the like. As shown in these figures, the shellfish extracting device 110 has, in addition to the structure already described, a buffer structure (not shown) for absorbing the impact of the striking part 14 by the net pressing part 12o (12b). can be configured. The cushioning structure can be constructed appropriately, but can be suitably realized as a mechanism for converting the impact received by the net holding portion into rocking motion, as illustrated in FIG. 17 and the like.

That is, when the net pressing portion 12o receives a force from below, it converts the force into a swing (or rotation) B (FIG. 1-4a) and changes its position to 12b (FIG. 1-4a). 4b) As a result, it has a durable structure that allows part of the received impact to escape and prevents itself from being damaged by repeated impacts. For such a structure, as shown in FIG. 1-4c, the net holding portion 12o (12b) can swing B around a certain axis, but unless it receives an upward force, for example, elastic force is applied. It may be configured to return to the predetermined position 12o by force.

With such a configuration, when the net holding portion 12o receives the upward force of the vertical drive V, it swings B and retreats to the position 12b, but does not retreat any further. As a result, the impact of the hitting portion 14 can be received and partly absorbed, and the above-described shaking action can be sufficiently achieved while preventing damage to the net pressing portion 12o itself. The swing angle, swing radius, maximum retraction distance, etc. of the cushioning structure can be appropriately designed.

As shown in FIG. 1-4b, the net that has been hit by the hitting part 14 moves (retracts) from the net holding part 12o to the net holding part 12b and moves slightly upward from the state of the net number. It will be in the state of Nb. In other words, the impact force is also absorbed to some extent by the net. However, the sifting action by hitting is as described above, and the shellfish S are efficiently released from the openings Q of the net.

In the cushioning structure of the shellfish picking-out device 10 of the present invention, it is effective to convert the vertical motion V by the striking part 4 into the rocking motion B, and to restrain it in a cushioning manner by means of elasticity. Soft braking is applied to the net holding part 2 by a cushioning regulating action due to elasticity, and the impact of the striking part 4 is received and transmitted to the net N in a state where the net holding part 2 does not retreat beyond a certain position. With this action, the net holding portion 2 and the hitting portion 4 cooperate to strongly exert the effect of swinging the net N, and the danger of damage to the net holding portion 2 can be reliably prevented, and the durability thereof can be improved. can increase

There is a concern that the net N and the shellfish S housed therein may go wild only with the inertia given by the vertical drive V by the vertical drive means 3 . However, it is prevented by providing a buffer structure. In addition, the free rampage of the net N and the like is thereby regulated, and the expected wielding action on the net N is strengthened, contributing to the ultimate effect of taking out shellfish and improving its practicality.

2 to 6 are explanatory diagrams (parts 1 to 5) sequentially showing the action of the shellfish extracting apparatus shown in FIG. Actions obtained by the shellfish extraction device 10 will be described with reference to the drawings.
Part 1 (Fig. 2): Each drive of the shellfish take-out device 10 is started. That is, the conveying driving means 6 causes the endless track 5 to make a revolving motion R, and the vertical driving means 3 causes the vertical movement V of the striking portion 4 . With the apparatus 10 thus started to operate, the net N is placed so as to be inserted between the endless track 5 and the net retainer 2 .

Part 2 (FIG. 3): The net N is conveyed in a state in which it does not come off or drop off from the endless track 5 by receiving a pressing action from above by the net holding portion 2, and is hit by the hitting portion from below. It has an action to receive the blow by 4 and an action to hold the net N so that it does not come off or fall off even by the blow. In addition, in this figure, the state at the time when the hitting part 4 does not hit the net N is shown.

Part 3 (FIG. 4): This figure shows the state at the time when the hitting part 4 is positioned higher and the net N is being hit. While the vertical drive means 3 is functioning, the states shown in FIGS. Get out. In this way, the action of taking out the shellfish S is performed.

Part 4 (FIG. 5): The net N is conveyed by the revolving motion R of the endless track 5 without being detached or dropped from the endless track 5 by the pressing action of the net pressing portion 2, and the vertical driving means 3 , and the shellfish S inside continues to come out from the opening Q.

In this conceptual explanatory diagram, the action of taking out the shellfish S is shown to extend to the latter half of the conveying area by the endless track 5, but in reality, within the first half of the conveying area, in a very short time, the net N All of the ten or so scallops contained within can be removed.

The take-out rate and take-out speed of the shellfish S from the net N include the size of the net N, the size of the opening Q, the number of shellfish S in the net N, the length of the endless track 5 serving as the transport path, and the transport The speed, the speed and amplitude of the vertical motion of the vertical driving means 3, the specific structure and form of the striking part 4, the form of the net holding part 2 and the actual cushioning structure provided, etc., are influential, but in any case, the net It is appropriate to consider these various conditions and specifically design the device so that all of the specified shellfish can be taken out within the transport area by exerting a swaying action while transporting them to N. It is possible to do In practical operation, a 100% take-off rate is always possible and the take-off speed is also fairly rapid.

Part 5 (Fig. 6): The shellfish S are taken out, and the net N conveyed to the end of the conveying area of the endless track 5 is discharged to the outside from between the net holding part 2 and the endless track 5 to form one net. The retrieval operation at N is completed. In the case of cultured shellfish such as scallops, the net N often takes the form of a net continuum in which a plurality of nets N are connected in series with a rope. In that case, the actions described above are continuously applied to subsequent nets N. FIG. The operator performs only the work of supplying each net N forming the net continuum to the apparatus 10 as shown in FIG. can be taken out well.

FIG. 7 is a perspective view showing the configuration of a net to which the shellfish extraction device of the present invention is mainly applied. As shown in the figure, the net N to which the present invention is mainly applied is a pearl net which is formed in a substantially quadrangular pyramid shape in a stretched state and has openings Q provided on oblique ridges. Pearl nets are widely used for cultivating shellfish such as scallops and pearl oysters. In principle, the term "net" used in the present application mainly refers to a net container having an approximately quadrangular pyramid shape and an opening Q. As shown in FIG. On the other hand, a plurality of these connected in series by a rope or the like can be said to be a "net continuum", but the "net continuum" may also be simply referred to as a "net".

In addition, as shown in each of the above figures, the endless track 5, etc. of the shellfish take-out device 10, etc. can be made up of a pair of rail-like structures. The rail-like structure forming the endless track 5 and the like has two left and right rails arranged parallel to each other, and has a structure similar to railroad rails, but each is an endless track. Both rail-like structures are preferably of the same specification driven at the same speed.

The shellfish pick-up apparatus 10 or the like of the present invention must be configured so that the shellfish S can come out of the net N placed with the opening Q facing downward and fall while being transported by the endless track 5 or the like. That is, under the opening of the net N, naturally, a structure that is open for dropping the shellfish is required. Since the pair of endless tracks 5 and the like having a rail-like structure have a gap between them, the shellfish S jumping out from the opening Q of the net N can fall downward without any obstacle.

Further, as shown in FIG. 1 and the like, the shellfish extracting apparatus 10 should be configured such that the net supply side end portion 2E of the net holding portion 2 is curved upward so that the net N can be easily introduced. can be done. As shown in the drawing, the net supply side end 2E has a structure that opens outward from the endless track 5 with a slope. Therefore, the user of the apparatus can easily perform the operation of inserting the net N between the endless track 5 and the net holding portion 2 from the net supply direction, and the net can be smoothly fed to the apparatus 10. N can be supplied.

The net supply side end 2E can also be formed with a considerable curvature that rises at an angle of 70 to 80°, as in the example (92E) shown in FIG. 17, for example. With such a configuration, the net N can be supplied to the device (910) more smoothly and easily, and the physical burden can be considerably reduced. In particular, when this work is performed in a standing position, concentration of the work when inserting into the gap between the endless track (95) and the net holding part (92) can be reduced, and the physical burden on the user is almost eliminated. In addition, it is possible to prevent failure due to lack of concentration when repeating simple work.

The body portion of the net pressing portion 2, which is a portion that exerts a pressing action on the net N inserted between the endless track 5 and the net pressing portion 2, is flat and flat as shown in the figure. A linear form is preferred. This is because the effect of pressing the net N from above and the effect of receiving and absorbing (buffering) the impact of the impact portion 4 from below can be sufficiently achieved.

Also, as shown in FIG. 1 and the like, the net holding portion 2 also opens outward with a slope from the surface of the endless track 5 in the same manner as the net supply side end portion 2E at the portion for discharging the net N at the most downstream side of the transport. can be a structure. Such a structure makes it easier to open the net N after finishing the work of taking out the shellfish, so that the net N can be smoothly discharged.

FIG. 8 is an explanatory diagram conceptually showing the basic configuration of the inclined shellfish extraction apparatus of the present invention. As shown in the figure, the shellfish take-out device 210 has, in addition to the configurations already described, the endless track 25 having an elevation angle facing the transport direction of the net N. can be provided. Although a configuration without such a slope is not excluded from the scope of the present invention, a structure with such a slope is desirable in order to remove shellfish from the net N more quickly and efficiently.

1 and 2 to 6, the inclination is omitted for the purpose of understanding the basic structure and operation. , as described above. Although the inclination angle of the elevation angle is not limited, it is desirable to be within the range of 5 to 20 degrees. This is because if the angle is too small, there is little point in providing the inclination, and if it is too large, smooth transport of the net N is hindered.

FIG. 9 is an explanatory diagram conceptually showing the basic configuration of the shellfish extraction apparatus of the present invention having a standby section. As shown in the figure, the present shellfish extraction device 310 includes, in addition to the components already described, a standby section 38 for waiting in a predetermined posture the net N before the shellfish S extraction processing, i.e., before being supplied to the present device 310. It can be configured as provided. The standby section 38 is provided in front of the endless track 35 that serves as the transport path. The standby unit 35 may have a trapezoidal structure on which one or more nets N before processing or a continuous net body can be placed.

It is desirable that the standby section 38 has a specification that allows a plurality of nets N to be stacked and placed. The standby section 38 may also have a structure that allows it to be folded compactly when not in use. Such a configuration is convenient and does not take up much space when not in use. According to the device 310 having the standby section 38, the operator can continuously perform the work of picking up one sheet from each of a plurality of nets N once placed on standby on the standby section 38 and placing them on the endless track 45. Therefore, labor is reduced and it is convenient.

FIG. 10 is an explanatory diagram conceptually showing the basic configuration of the shellfish extracting apparatus of the present invention having restricting means. As shown in the figure, the endless track 45 of the shellfish take-out device is provided with convex restricting means 45M for restricting the position of the placed net N in addition to the components already described. can do. The regulating means 45M can be composed of a convex structure with suitable specifications that can effectively regulate the movement of the net N mainly on the conveying surface.

As described above, the action of the net holding portion 42 can prevent the net N from coming off or falling off from the endless track 45. By providing the restricting means 45M, the effect of preventing the net N from coming off or falling off can be further enhanced. At the same time, it is possible to effectively prevent the net N from rotating within the upper plane of the endless track 45 . When rotation occurs, it is difficult to obtain a smooth sifting action. Restricting the free movement of the net N in this way further strengthens the swinging (unraveling) of the net N, and as a result, it is possible to enhance the effect of taking out shellfish.

As long as the net N has a frictional action or a locking action that prevents it from detaching left and right on the endless track, swaying back and forth in the conveying direction, in other words, it does not run wild on the endless track 45, the convex structure is used. The size, height, and shape can be designed as appropriate. Although the number of restricting means 45M provided in the endless track is also arbitrary, a suitable plurality of restricting means 45M may be provided evenly in consideration of the size of the net N to be applied, the transport speed of the endless track 45, and the like. is desirable.

FIG. 11 is an explanatory view conceptually showing the basic configuration of the shellfish extraction apparatus of the present invention having a post-treatment net placing section. As shown in the figure, the shellfish extraction device 510 can be configured to have a post-processing net placing section 50 for stacking the nets N after the shellfish S extraction processing, in addition to the components already described. It also takes labor to sort out the nets N after the shellfish S have been taken out one by one and prepare them for use next time. When the empty net N after the shellfish S extraction process reaches the terminal end of the endless track 55, it is automatically placed on the post-treatment net placing section 50 as it is. A plurality of nets N can be placed as they are, and post-processing such as moving them all together can be performed later, which is efficient and reduces labor.

FIG. 12 is an explanatory diagram conceptually showing the basic configuration of the shellfish extraction apparatus of the present invention having a sorting unit. As shown in the figure, the shellfish pick-up device 610 has, in addition to the components already described, a sorting unit 67 below the endless track 65 for sorting the shellfish S taken out from the net N according to size. can do. With such a configuration, the apparatus 610 can be configured to be capable of sorting the shellfish S in addition to taking out the shellfish S. Here, sorting means sorting the shellfish S according to their size.

In the drawing, the sorting unit 67 is arranged horizontally, but for the purpose of achieving a better sorting action, the sorting unit 67 can also be arranged inclined as with the endless track 65. . This also leads to space saving and miniaturization of the device. When the inclination is provided, the angle is not particularly limited, but it can be within the range of 5 to 20°, as in the case of the endless track 65 already described.

The sorting unit 67 shown in the figure receives the shellfish S directly taken out from the endless track 65 constituting the transport section 61 for transporting the net N without going through the shellfish transport path (see FIG. 14 etc.) as described later. Configuration. In this case, it is desirable to shorten the drop distance from the opening Q of the net N to the sorting unit 67 as much as possible in order to reduce damage to the shellfish S and damage to living bodies. In other words, it is desirable to provide the sorting unit 67 immediately below the endless track 65 with as little space as possible. In addition, the structure via the shellfish conveyance path 8T is more preferable so that it may demonstrate using FIG. 16 later.

The shellfish S sorted according to size by the sorting unit 67 can be sorted by size and stored in shellfish containers C1, C2, and the like. In the illustrated example, the storage in the shellfish storage container C1 or the like except for the case of being left on the sorting unit 67 is configured to be sorted into two sizes (large and small), but there are three sizes (large).・The sorting criteria can be set in any way, such as a configuration for sorting into medium and small.

FIG. 13 is an explanatory diagram showing an example of a sieve structure provided in the sorting unit. As illustrated, the sorting unit 67 in the present shellfish extraction device 610 includes a sieve portion 6H having one or more sieve structures for sorting the shellfish S by size, and a sieve portion driving means (not shown) for vibrating the sieve portion 6H. ). It is desirable that the vibrating direction of the sieve portion 6H is the horizontal direction, that is, the direction that allows the sieve portion to move on the surface. This is because the sieving unit 6H has a pore structure that serves as a sieving function for sorting the shellfishes S according to their sizes, and for this purpose it is necessary to move the shellfishes S on the surface of the sieving unit 6H. An example of a sieve structure that constitutes the sieve unit 6H will be described.

As shown in FIG. 13, in this example, a plate-like sieve structure 6HA having larger sieve holes 6Ha and a plate-like sieve structure 6HB having smaller sieve holes 6Hb are arranged vertically to form a sieve unit. It is a configuration forming 6H. When the shellfish placed on the upper sieve structure 6HA is positioned on the sieve hole of 6Ha by lateral vibration, if the shellfish is larger than this hole, it remains on the sieve structure 6HA, and if it is smaller than this hole, it remains on the sieve hole 6Ha. , onto the lower sieve structure 6HB. Then, when positioned on the sieve hole 6Hb due to lateral vibration, if the diameter is larger than this hole, it remains on the sieve structure 6HB, and if the diameter is smaller than this hole, it falls downward through the sieve hole 6Hb. Thus, in this example, it is possible to sort into three sizes. Note that the illustrated sieve portion 6H is an example, and it is of course possible to adopt another configuration.

As shown in FIG. 12, the vibration of the sieve portion 6H of the sorting unit 67 can be obtained by sharing the vertical driving means 63 of the striking portion 64 and the driving source (power source). As a result, the device configuration can be simplified, and energy can be saved. In this case, the vertical driving means 63 drives the striking part 64 up and down, while the sorting unit 67 is driven to change the movement direction and vibrate the sieving part 6H in the horizontal direction. It should be noted that the sieving action of the sieving portion 6H can be achieved not by vibration in the lateral direction, but by, for example, rotational motion in the plane of the sieving portion 6H or vibration obtained by combining lateral vibration with vertical motion. Sufficient sieving effect can be obtained only by directional vibration.

FIG. 14 is an explanatory diagram conceptually showing the basic configuration of the shellfish take-out apparatus of the present invention having a shellfish transport path. As shown in the figure, the shellfish take-out device 710 has, in addition to the components already described, a shellfish transport path 7T for receiving the shellfish S discharged from the net N and dropping and transporting the shellfish S to the transport destination 7G. can be That is, according to this configuration, the shellfish S taken out from the net N can be transported to the transport destination 7G, which is a predetermined destination, through the shellfish transport path 7T.

Examples of the transport destination 7G include, in addition to the above-described sorting unit, a sorting machine independent of the apparatus 710 for sorting the shellfish S by size, a washing machine for removing marine deposits from the shellfish S, and other shellfish extraction. Machinery, tools, and devices for post-processing shellfish and nets N are all applicable.

As shown in the figure, the shellfish transport path 7T of this device 710 can be provided with a depression angle toward the supply direction, ie, the transport destination 7G, that is, can be provided with a downward slope. For example, if the transport destination 7G is a sorting unit or the like for performing some kind of processing on each individual shellfish S, the shellfish S are arranged in separate rows without overlapping each other as much as possible. It is convenient if it is supplied in the form of Making the shellfish conveying path 7T oriented toward the conveying destination 7G at a depression angle is advantageous for such an action. Although the actual depression angle is not limited, it can be, for example, 5 to 20 degrees.

FIG. 15 is an explanatory diagram showing a specific configuration example of the shellfish transport path. As shown in the figure, the shellfish transport path 7T may be provided with at least one of vibration means 7A for vibrating the shellfish transport path 7T and flow-down means 7W for causing water to flow down. The vibrating means 7A is an element for vibrating the shellfish transport path 7T to facilitate movement of the shellfish S thereon. The vibration here may be vibration in the lateral direction (within the transport plane of the shellfish transport path 7T), vertical vibration (vertical motion), or any resultant force thereof. Moreover, 7 A of flow-down means are elements for making it easy to move the shellfish S by the force of the water which flows down.

Due to the configuration including at least one of the vibrating means 7A and the flowing-down means 7W, the shellfish S released from the opening Q of the net N and dropped onto the shellfish transport path 7T from above moves on the shellfish transport path 7T having a depression angle. move downwards. Moreover, they can be moved in a certain degree of alignment. Although only one of the vibrating means 7A and the flow-down means 7W has a corresponding effect, the use of both makes it possible to move the shellfish efficiently. An endless track such as a belt conveyor may be used for the shellfish transport path, but the configuration shown in FIG. 15 also provides a sufficient transport effect.

The vibrating means 7A of the shellfish conveying path 7T in the present shellfish picking-out device 710 may be configured to share a driving source with at least one of the vertical driving means 73 or the conveying driving means 76. In particular, as already described, it is more desirable to use a configuration in which the vertical driving means 73 and the driving source are shared. This is because the vibration driving by the vibration means 7A is closer to the vertical movement V by the vertical driving means 73 than the circulating driving R by the conveying driving means 76 in terms of linearity of motion. In FIG. 14, the vibrating means 7A and the vertical driving means 73 share a drive source.

In addition, not only the vibrating means 7A related to the drive of the shellfish transport path 7T, but also a mechanism for obtaining a plurality of different drives from a single drive source in the shellfish take-out apparatus of the present invention can be appropriately designed. It is also possible to change the motion direction using a link or the like, or use a reduction mechanism as necessary.

FIG. 16 is an explanatory view conceptually showing the basic configuration of the shellfish take-out apparatus of the present invention having a shellfish transport path and a sorting unit. As shown in the figure, in the shellfish take-out device 810, in addition to the components already described, the transport destination of the shellfish transport path 8T can be the sorting unit 87 described above. In this way, the shellfish S released from the net N by the sieving action on the endless track 85 reaches the sorting unit 87 via the shellfish transport path 8T, so that the shellfish S are generally They are transported on the shellfish transport path 8T in an aligned state, supplied to the sorting unit 87, which is the transport destination provided at the end of the shellfish transport path, and subjected to sorting processing in the sorting unit 87.例文帳に追加

The sieve portion driving means 8D associated with the sorting unit 87 in the illustrated shellfish picking-out device 810 shares a drive source with at least one of the vertical driving means 83 for vertically driving the striking portion 84 or the vibration means 8A of the shellfish transport path 8T. It can be configured as That is, a configuration in which the drive source of the sieve portion driving means and the vertical drive means 83 are shared, a configuration in which the drive source of the sieve portion drive means 8D and the vibrating means 8A are shared, and a configuration in which all of these three drive sources are shared. , or any of them. The last-mentioned configuration is the illustrated configuration, but in this case, a single drive source (single motor) drives all of the striking unit 84, the shellfish transport path 8T, and the sieving unit of the sorting unit 87. can be done. Such sharing of the drive source can make the device configuration simpler and more compact, and also leads to power saving.

One of the characteristics of the shellfish extraction device of the present invention is that it can be formed considerably more compactly than conventional devices. The device actually manufactured has the following specifications, and its compactness has been verified. The unit is mm. The horizontal size was set to be 40 mm larger than the diagonal dimension of the target net.

1) Shellfish extracting device (extracting function) only type Length 1000 x Width 550 x Height 750 (net supply side) / 950 (net discharge side) Total weight 55kg
2) A type in which a shellfish conveying path (conveying function) is added to the shellfish extracting device Length 1200 x Width 550 x Height 750 (net supply side) / 950 (net discharge side) Total weight 65kg
3) A type in which a shellfish conveying path (conveying function) and a sorting unit (sieve, sorting function) are added to the shellfish extracting device Length 1300 x Width 550 x Height 750 (net supply side) / 950 (net discharge side) Total weight 85kg

As described above, the shellfish extraction device of the present invention is compact and lightweight, and can be configured as a portable type that can be transported, installed, and removed between land and ship without much labor. Such a configuration is a very preferable specification for scallop farmers who have relatively high working age groups and many small-scale businesses.

Incidentally, the device size in the technology disclosed in Patent Document 1 is as shown in 4) below.
4) Length 2000 x Width 700 x Height 1800 Total weight 240kg
As described above, the present invention achieves an extremely excellent compactness, including the fact that the weight is reduced to 1/3 compared to the conventional technology. Therefore, the device can be installed in a narrow space on a ship or on land.

In addition, actuators, such as a motor, can be used suitably as each drive means of this invention shellfish extraction apparatus demonstrated above. In the case of a motor, appropriate means such as a link or a cam may be used as a mechanism for converting its rotational motion into vertical motion or lateral vibration.

In the shellfish extraction method using the shellfish extraction apparatus 10 of the present invention having any of the configurations described above, the net N is placed between the endless track 5 and the net holding part 2 so that the opening Q faces downward. A method for removing shellfish S by setting the shellfish S in the container and subjecting the shellfish S to the removal process is also an invention disclosed by the present application.

Examples of the present invention will be described below, but the present invention is not limited to such examples.
[Embodiment Device for removing shellfish _ Device for removing scallop shells in the net]
We have developed and manufactured a device for smoothly, quickly, and easily removing scallops from a net containing cultured scallops.
17 to 22 are photographic diagrams showing an embodiment of the present invention, and are photographic diagrams of front view, rear view, left side view, right side view, top view, and bottom view in order. Two motors of 30 W and 80 W types were used as the drive source for each element constituting the shellfish take-out device 910 . The former was used as a driving source for the transport driving means 96 and the latter was used as the vertical driving means 93 . The latter can also be used as a drive source for driving the sieving unit when a sorting unit is added.

Shellfish Extraction Apparatus Example 910 was used to test the effectiveness of shellfish extraction.
The apparatus 910 was powered on, and the endless track 95 was circulated by the transfer driving means 96 and the net holding portion 92 was moved vertically by the vertical driving means 93 . Then, from the net supply side end portion 92E, the pearl net (basket continuous body) containing cultured scallops was continuously supplied. This was done by setting between the endless track 95 and the net holding portion 92 manually by the operator.

As a result, while being transported, the net is shaken by the cooperation of the striking part 94 and the net holding part 92, and immediately the scallops in the net begin to be ejected from the opening, and a single net is formed. All about 10 scallops inside were smoothly discharged in about 1 to 3 seconds. This proves that the apparatus of the present invention is highly effective in extracting shellfish and highly practical.

Further, the buffer structure 92B attached to the net pressing portion 92 absorbs a part of the impact received by the net pressing portion 92 from the hitting portion 94 by elastically receiving it by swinging. It was confirmed that the sifting action of the net due to a physical blow can be continued satisfactorily.

[Embodiment 2 Addition of sorting unit]
FIG. 23 is a photographic view of a form provided with a sorting unit in the embodiment shown in FIG. 17 and the like. In the drawing, some elements such as the net retainer are removed to make the sorting unit easier to see. A shellfish transport path 9T is interposed on the upstream side of the sorting unit 97 . The apparatus 910 can be used for picking out shellfish only with the first embodiment shown in FIG. 17 and so on. ) as well as its sorting. The 80 W motor described in the examples was used as a common drive source for the shellfish transport path 9T, the sieve portion of the sorting unit 97, and the vertical drive means 93 of the striking portion 94.

The Shellfish Extraction Apparatus 910 Example 2 was used to test the effectiveness of shellfish sorting.
Here, the device 910 is turned on while the scallops taken out are placed on the shellfish conveying path 9T, and the vibrating movement of the shellfish conveying path 9T and the vibrating drive of the sieving unit of the sorting unit 97 are started. bottom. The sieving part is formed of a plate-like structure having a large number of sieving holes of a certain size, and is configured to screen scallops into two sizes, one that does not pass through the sieving holes, one that passes through the sieving holes, and two sizes, large and small.

As a result, the scallops are transported by the shellfish transport path 9T provided with a depression angle inclination in the transport direction, reach the sieve part of the sorting unit 97 below it, and are sized by the sieve holes of the vibrating sieve part. The size was sorted well. As a result, the size sorting effect of the device 910 of the present invention could be verified.

According to the shellfish pick-up apparatus of the present invention, shellfish can be taken out more efficiently from the aquaculture basket than in the above-mentioned conventional technology, the work can be speeded up, and the labor of the operator can be greatly reduced and labor-saving. Moreover, it is compact and highly practical. Therefore, the present invention has extremely high practical utility and high industrial applicability in the field of shellfish farming, the industrial field where it is necessary to take out the objects stored inside from a net of similar structure, and all fields related to these. Invention.

1, 21, 31, 51, 61, 71, 81... Conveying parts 2, 12o, 12b, 22, 32, 42, 52, 62, 72, 82, 92... Net holding parts 2E, 22E, 32E, 92E... Net Supply side end portions 3, 23, 33, 53, 63, 73, 83, 93... Vertical drive means 4, 14, 24, 34, 54, 64, 74, 84, 94... Hitting portions 5, 15, 25, 35 , 45, 55, 65, 75, 85, 95... endless tracks 5M, 15M, 45M, 95M... convex restricting means 6, 26, 36, 56, 66, 76, 86, 96... transport driving means 6H... sieve Part 6HA, 6HB... Sieve structure 6Ha, 6Hb... Sieve hole 7A... Vibration means 7G... Conveyance destination 7T, 8T, 9T... Shellfish conveying path 7W... Flow-down means 8D... Sieve part driving means 9, 19, 29, 39, 59, 69, 79, 89, 99... support part 10, 110, 210, 310, 510, 610, 710, 810, 910... shellfish take-out device

38 Stand-by section 50 Post-processing net placement section 67, 87, 97 Sorting unit 92B Buffer structure B Swing (swing motion)
C1, C2, C3, C4... Shellfish container F...Movement of shellfish on shellfish transport route N...Cage for shellfish cultivation (pearl net, net)
Q... Opening R... Orbital motion (orbital drive)
S: Shellfish V: Vertical motion (vertical motion, vertical drive)

Claims (16)

A shellfish extracting device for extracting shellfish from a cage for shellfish culture (pearl net, hereinafter also simply referred to as "net") having an approximately square pyramid shape and having openings on oblique ridges, the net comprising: a conveying portion that supports and conveys from below; a net holding portion that holds down the net conveyed by the conveying portion from above; a hitting portion that continuously hits the net conveyed by the conveying portion from below; The conveying unit comprises a pair of left and right endless tracks on which the net is placed with its opening facing downward, and a conveying driving means for driving the endless tracks. A shellfish extracting device comprising: A pair of left and right net pressing portions are provided in the same direction as the driving direction of the endless track. The shellfish take-out device according to claim 1, wherein: 3. The device for taking out shellfish according to claim 1, wherein said net holding portion has a cushioning structure for absorbing impact by said striking portion. 4. The device for taking out shellfish according to claim 3, wherein the cushioning structure is a mechanism for converting an impact received by the net holding portion into a swing motion. 5. The shellfish picking-out device according to claim 1, wherein a pair of left and right hitting portions are provided directly below the net pressing portion. Claims 1, 2, 3, and 4, characterized in that both the net holding portion and the hitting portion are bar structures (hereinafter the former is also referred to as a "holding bar" and the latter as a "hitting bar"). 6. The shellfish take-out device according to any one of 5. 7. The apparatus for taking out shellfish according to claim 1, wherein said endless track is provided with an elevation angle facing the direction of transport of the net. 8. The apparatus for taking out shellfish according to any one of claims 1, 2, 3, 4, 5, 6 and 7, further comprising a standby section for making the net stand by in a predetermined posture before processing to take out shellfish. 9. The apparatus according to any one of claims 1, 2, 3, 4, 5, 6, 7 and 8, characterized in that the end portion of said net holding portion on the net supply side is formed with an upward curve so that the net can be easily introduced. The shellfish take-out device according to any one of the above. 1, 2, 3, 4, 5, 6, and 7, characterized in that the endless track is provided with convex restricting means for restricting the position of the placed net. 9. The shellfish take-out device according to any one of 8 and 9. 11. Any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, characterized by comprising a post-treatment net placement section for stacking the nets after the shellfish removal treatment. Shellfish take-out device according to. 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, characterized in that a sorting unit for sorting the taken-out shellfish by size is provided below the endless track. 12. The shellfish extractor according to any one of 11. 13. The sorting unit according to claim 12, characterized in that the sorting unit comprises a sieve part comprising one or more sieve structures for sorting the shellfish according to size, and a sieve part driving means for vibrating the sieve part. shellfish removal equipment. 1, 2, 3, 4, 5, 6, 7, 8, and 9, characterized in that a shellfish conveying path is provided for receiving the shellfish discharged from the net and dropping and sending the shellfish to a conveying destination. , 10, 11, 12, 13. 15. The shellfish pick-up apparatus according to claim 14, wherein the shellfish transport path is provided with a depression angle in the supply direction. 16. The shellfish pick-up apparatus according to claim 14, wherein the shellfish transport path is provided with at least one of vibration means for vibrating the shellfish transport path and flow-down means for causing water to flow down.

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