JPH09187193A - Shell harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shell harvesting machine having a digging device, etc., installed on a sulky flatcar capable of self-travelling on a sandy ground, excellent in running stability and working efficiency, and useful for harvesting a short-necked clam, etc. SOLUTION: This shell harvesting machine equips a sulky flatcar 10 capable of self-travelling on a sandy ground, a digging device 13 installed on the flatcar 10, a collecting device 14 collecting shells dug by the digging device 13 in accompany with the travelling of the flatcar 10 and a travel stabilizing device 11 provided at the front direction of the digging device 13, for preventing the digging device from sinking into the ground such as an empty drum 11c capable of moving by a rotation on the sandy ground. Further, also at the rear direction of the collecting device, it is preferable to equip a weight measuring device measuring the weight of the collected shells.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collecting machine for shellfish such as clams and sea mussels that live in shallow water.

[0002]

2. Description of the Related Art Conventionally, the method of collecting shellfish inhabiting shallow waters of public beaches and farms has been mainly done by manpower using a rake-like device. It is necessary to have special skills for fisheries, and in particular, automation of shellfish collection is desired due to the shortage of workers and aging in recent years.

[0003] As a shellfish collecting device that automates this collecting operation, a device that collects shellfish living in the sand on the sea floor has been proposed.
JP-A-55-9711, JP-A-57-11013
No. 0, JP-A 6-43, JP-A 3-1264
No. 63 has been proposed. By submerging such a sampling device on the seabed and towing with a ship, shellfish in sand can be taken into the device from the opening.

On the other hand, an apparatus for collecting shellfish in shallow water such as a pond is disclosed in Japanese Patent Publication No. 55-10216 and Japanese Patent Application Laid-Open No. 59-1984.
-198924.

The one described in Japanese Patent Publication No. 55-10216 moves parallel to the long edge of the bogie traveling along the poultry pond, raises and lowers and rotates the rotary excavating blade to excavate the upper layer of the poultry pond, A device for digging out shells embedded in a trolley.A support frame is installed on a rail laid parallel to the long edge of the bogie so that it can run. Independent rotary power is attached to the rotary blade, and independent lifting power is attached to the suspension frame. This makes it possible to efficiently scoop up the remaining shellfish in the pond and automate a series of shelling work.

However, this device is used in a rearing pond equipped with facilities such as a rail extending over the entire rearing pond, and cannot be used on a general beach.

In this respect, Japanese Patent Application Laid-Open No. 59-198924 discloses an engine mounting method in which a rotor is rotatably mounted at the tip of a long rod, and an engine for driving the rotor is connected to an upper rod end. A handle is provided under the handle, a grounding leg is provided at the lower end of the handle, and a shellfishing basket is detachably attached to an intermediate portion of the long rod.

With such a structure, by moving the grip portion of the handle up and down around the support shaft, the installation leg can be moved back and forth without changing the body of the engine or the like. Speed and strength can be adjusted,
The shellfish can be collected efficiently by an easy operation.

[0009]

However, the shellfish collecting machine described in Japanese Patent Application Laid-Open No. 59-198924 discloses
Since it is necessary for the operator to operate while walking on the sandy surface with the handle, the work efficiency is poor, and the rotor is likely to sink into the sandy area when excavating the sandy area, and smooth running is difficult especially on a loose sandy area. is there.

The present invention solves the above-mentioned problems in the conventional shellfish collecting machine, and it is possible to efficiently collect a large amount of shellfish living in the sandy area, and to effectively insert the excavator into the sandy area. The purpose is to provide means that can be effectively prevented.

[0011]

In order to solve the above-mentioned problems, a shellfish collecting machine of the present invention has a tracked track, a riding type bogie capable of self-propelled on a sandy ground such as a farm or a general beach, and the bogie. An excavation device for shellfish provided in, a capture device for capturing shellfish in sandy ground excavated by the excavation device as the truck travels, and an intrusion prevention device for the excavation device provided in front of the excavation device. And a traveling stabilizer.

As a result, the worker can move while riding on the trolley, and can perform a quick work regardless of the condition of the sandy ground, and a traveling stabilizer for preventing the digging device from slipping in ahead of the digging device. By providing, it is possible to effectively prevent the intrusion due to excavation of sandy land,
Stable running becomes possible.

Here, as the traveling stabilizing device, a hollow drum-shaped device having a rotation support shaft in a direction orthogonal to the traveling direction and capable of rolling by the forward movement of the carriage can be used. Since such a drum rolls on the sandy ground as it travels, it gives buoyancy to the excavator without becoming a resistance to travel,
The excavator can be maintained at a predetermined depth in the sand.

Further, as the trapping device, a device having a mesh-shaped screen member for sieving the captured sand-mixed shellfish into shellfish and sand, etc., it is desirable to provide a vibrating sieve in order to sieve it efficiently.

Further, a measuring device for measuring the caught shellfish may be provided at the rear position of the catching device. This metering device is provided with an opening / closing member in the passage of the shellfish that is dropped from the capture device to the metering device, and when the shellfish on the metering device reaches a predetermined amount, the opening / closing lid is automatically closed to prevent the inflow of shellfish. The automatic weighing device may be provided with a control means for stopping.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a perspective view of the shellfish collecting machine according to the present embodiment as viewed from the front left side, FIG. 2 is a perspective view of the shellfish collecting machine shown in FIG. 1 as viewed from the rear right side, and FIG. 3 is a left side of the shellfish collecting machine shown in FIG. FIG.

Referring to FIG. 1, reference numeral 10 denotes a trolley capable of traveling on a sandy ground such as a farm, and an endless track 10a as a driving device is provided at a lower portion thereof, and an operator is allowed to operate at an upper portion thereof. The operation unit 10b is provided. Further, 10c clearly shown in FIG. 3 indicates a pressing bar which is moved in the arrow direction by an operation, and 10d shown in FIG. 2 indicates a fuel tank of the truck 10.

A front end guide 11 is provided on the right side of the front as a traveling stabilizer. This tip guide 1
Reference numeral 1 denotes a frame 11a having a U-shaped plan shape in which a base end portion is rotatably supported by a dolly 10 by bending a substantially middle portion.
And a pair of brackets 11b vertically provided on both sides of the tip of the frame 11a, and a rotary drum 11c pivotally supported by the brackets 11b.
The rotating drum 11c has a hollow shape in which the front and rear ends of a cylindrical steel pipe are closed, and the outer peripheral surface of this rotating drum moves forward while rolling on the sandy ground during work.

Referring to FIGS. 4 and 5, reference numeral 11d denotes a support bar which is hung on both side rods of the frame 11a, and bolt-like suspension bars 12 are detachably locked to both ends of the support bar 11d. Further, an excavation device 13 for excavating shellfish living in the sand is attached below the excavation device 13.

The excavator 13 has a rotary shaft 13a having a sprocket 13c for power transmission at one end, and the rotary shaft 13a.
A large number of excavating blades 13b are provided on the outer periphery of a, and by advancing while rotating the rotary shaft 13a, it is possible to scrape out shells that live in the sandy ground without damaging the shells.

At the rear position of the excavator 13, shellfish in the sandy ground excavated by the excavator 13 are placed in the cart 1.
A capture device 14 that captures as the vehicle travels 0 is provided. In the present embodiment, the first sieving device 15 inclined from the installation surface toward the upper end of the trolley, and the second sieving device 16 provided in the downstream region of the first sieving device 15 are provided. The capture device 14 is configured by.

The first sieving device 15 is provided with a screen 15b for separating shellfish and sand, in which a large number of wire rods are provided in a vertical direction in a rectangular frame 15a. As clearly shown in FIG. 5, a scooping device 17 having rotating shafts 17a and 17b at upper and lower ends is arranged on the upper surface of the screen 15b. 17c is a rotary shaft 17a, 17
A chain whose both ends are wound around b, this chain 17c
The rubber plates 17d are attached at equal intervals.
The tip of the rubber plate 17d is formed so as to slightly contact the screen 15b, whereby the chain 17c is driven to move the screen 15b.
The upper shellfish is put on the upper part, that is, the second sieving device 16
Lift up to. As shown in FIG. 4, a notch is formed at the tip of the rubber plate 17d, so that the shellfish can be conveyed without imposing an excessive load.

The second sieving device 16 is shown in FIGS.
As shown in FIG.
a is supported by the vibration device 16b, and can be vibrated in the direction of the arrow in FIG. Thereby, the first
Sand remaining in the sieving apparatus 15 can be completely removed. 16c is a guide plate for guiding the fallen sand.

With reference to FIGS. 2 and 3, the second sieving device 16 is provided in a region further downstream of the second sieving device 16.
A receiving container 18 for temporarily storing shellfish sent from the vessel is provided, a pair of outlets having an opening / closing lid 18a is formed on one side thereof, and a guide 18b for guiding the shellfish to both outlets is formed therebetween. ing. Any of the open / close lids 18a
By opening and closing, shellfish can be dropped on the packaging bag 20 described later.

A measuring device 19 for measuring shellfish is provided below the discharge port of the receiving container 18. In the present embodiment, a weight 19b is attached to one of the arms 19a.
Is a balance type provided with a receiving tray 19c on the other side, and shells falling from the receiving container 18 are automatically inserted into the packaging bag 20 attached to the receiving tray 19c. Since the tray 19c is lowered when the weight reaches a predetermined value, the opening / closing lid 18a of the receiving container 18 is closed. All of these operations can be performed on a work table 21 attached to the cart 10.

In FIG. 1, reference numeral 22 is a rotary shaft 17b.
A chain for transmitting power from the vehicle to the rotary shaft 13a of the excavator 13, and in FIG.
Each of the chains transmitting the power from e is shown.

Next, the operation of the shellfish collecting machine will be described with reference to FIG.

First, in the state shown in FIG. 6 (a), when the trolley 10 is moved forward while driving the drive shaft 10e shown in FIG. 3, the shellfish and sand in the sandy ground excavated by the excavation device 13 become first. It is taken into the sieving device 15. Here, the rubber plate 17d of the scooping device 17 sequentially conveys it upward. At that time, seawater is sprinkled from a sprinkler (not shown) provided above, and excess sand drops from the screen 15b.

As shown in FIG. 6 (b), the further transferred shellfish are taken into the second sieving device 16, where water is sprinkled and the screen 16a is vibrated to separate most of the sand. can do.

Further, as shown in FIG. 6 (c), the shellfish taken in the receiving container 18 along the inclination of the screen 16a is opened by opening the opening / closing lid 18a shown in FIG. It can be dropped in the packaging bag 20. After dropping by a predetermined amount, the opening / closing lid 18a is closed.

During such excavation work, the rotary drum 11c
By arranging and moving it forward while rolling, it becomes possible to maintain a predetermined depth without the excavation device 13 getting into the sand more than necessary, and smooth running regardless of the ground condition. Is possible.

[0032]

According to the present invention, the following effects can be obtained.

(A) With the shellfish extractor of the present invention, an operator can move while riding on a trolley, which enables swift work regardless of the condition of the sandy land, and excavates in front of the excavator. By including the travel stabilizing device for preventing the device from slipping in, it is possible to effectively prevent the slipping in due to the excavation of the sandy land, and it is possible to perform stable traveling.

(B) By using a hollow drum-shaped traveling stabilizing device which can roll by the forward movement of the bogie, the digging device is given buoyancy without causing resistance to the traveling because it rolls on the sand ground as the traveling. The excavator can be maintained at a predetermined depth in the sand.

(C) By providing a weighing device at the rear position of the trapping device for weighing the trapped shellfish, it is possible to efficiently perform from the collection to the packaging.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shellfish collecting machine of the present invention as viewed from the front left side.

FIG. 2 is a perspective view of the shellfish collecting machine shown in FIG. 1 as viewed from the rear right side.

FIG. 3 is a left side view of the shellfish collecting machine shown in FIG. 1;

FIG. 4 is an enlarged view of a portion A in FIG. 3;

FIG. 5 is a diagram showing a side sectional structure of the shellfish collecting machine shown in FIG. 1;

6 is an explanatory diagram showing a shellfish collecting situation using the shellfish collecting machine shown in FIG. 1. FIG.

[Explanation of symbols]

 10 truck 10a trackless track 10b operation part 10c pressure bar 10d fuel tank 10e drive shaft 11 tip guide (travel stabilizer) 11a frame 11b bracket 11c rotating drum 11d support bar 12 suspension bar 13 excavator 13a rotating shaft 13b excavating blade 13c sprocket 14 Capture Device 15 First Screening Device 15a Frame 15b Screen 16 Second Screening Device 16a Screen 16b Vibration Device 16c Guide Plate 17 Scooping Device 17a, 17b Rotating Shaft 17c Chain 17d Rubber Plate 18 Receiving Container 18a Opening / Covering 18b Guide 19 Weighing device 19a Arm 19b Weight 19c Receptacle 20 Packaging bag 21 Workbench 22, 23 Chain

Claims (3)

[Claims] 1. A riding type trolley capable of self-propelled on a sandy ground, an excavation device provided on the trolley, and a capture device for capturing shellfish excavated by the excavation device as the trolley travels. A shellfish collecting machine, comprising: a traveling stabilizing device provided in front of the excavation device to prevent the excavation device from slipping into the excavation device. 2. The shellfish collecting machine according to claim 1, wherein the travel stabilizing device is a hollow drum that can roll on the sand ground by the forward movement of the traveling carriage. 3. The shellfish collecting machine according to claim 1, further comprising a weighing device at a rear position of the capturing device for weighing the captured shellfish.