JPS6131667Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device used for lifting fixed nets, particularly salmon fixed nets.

Traditionally, netting work for fixed salmon nets involves winding up the rope passed through the net and the net itself using rollers, etc.
The weight of the catch acts locally on the net, causing the mesh made of thin threads to tear, making it difficult to mechanize and was carried out exclusively by hand.

However, manual net hauling work is not only hard work but also quite dangerous, which naturally leads to higher wages for the workers, which in turn is one of the reasons for the rise in fish prices. Furthermore, there are other problems such as low work efficiency and damage to the fish that have been harvested.

The present invention was developed to solve the above-mentioned problems, and includes a net-lifting method in which the weight of the catch does not locally act on the fixed net during the net-lifting operation, and a net-lifting method in which the claws that come into direct contact with the net during the net-lifting operation are By combining a structure that does not damage the net and a mechanism that can adjust the net lifting speed according to the amount of catch, the net lifting work can be mechanized, improving the contents of the net lifting work and preventing damage to the fish body, thereby reducing the price of fish. The purpose of the present invention is to provide a net lifting device that can effectively utilize marine resources.

The drawings showing one embodiment of the present invention will be described below. Reference numeral 1 denotes a cam drive shaft whose both ends are pivotally supported by support plates 2 and 2' which are arranged parallel to each other at a required interval, and includes a plurality of lifting cams 3 which are eccentrically fixed at required intervals. ing. 4 is one support plate 2
A hydraulic motor with a reducer attached to the support plate 2
connected to the end of the cam drive shaft 1 pivotally supported by the
The cam drive shaft 1 is rotationally driven. In addition, each lifting cam 3...
... have different eccentric positions.

The support plate 2 or 2' consists of a base plate 7 or 7' fixed to the deck 6 of the hull 5 with bolts or the like, and a base shaft 8 or 8' fixed perpendicularly to the base plate 7 or 7'. It is fixed to a deck stand 9 or 9' via the base shaft 8 or 8'.

10 is parallel to the cam drive shaft 1, and both support plates 2, 2'
It is a swinging member shaft with both ends fixed to the tip of the swing member.

Reference numeral 11 denotes a swinging member rotatably supported by a swinging member shaft 10 fitted near the center, one end of which abuts the lower end of the lifting cam 3, and the other end pivotally supporting the upper end of the lifting link 12. With the rotation of the lifting cam 3 fixed to the cam drive shaft 1, the lifting link 12 is moved up and down in the direction of arrow C using the swinging member shaft 10 as a fulcrum.

The lifting link 12 has an upper end pivotally supported by the other end of the swinging member 11, and a rake-shaped net lifting device 14 with a net lifting claw 13 facing the hull 5 side is fixed to the supporting end. The net lifting device 14 is made of metal, synthetic rubber, or synthetic resin with the net lifting claws 13 covered with rubber or the like, so as not to damage the net.

15 is a control valve for the hydraulic motor 4.

Also, the lifting cam 3, the swinging member 11, the swinging member shaft 12
A large number of net lifting devices 14 are provided depending on the size of the fixed net.

One embodiment has the above configuration, so when the hydraulic motor 4 is driven and the cam drive shaft 1 is rotated in the direction of arrow A, the lifting cam 3 also rotates, and since the lifting cam 3 is eccentrically fixed, it swings. The member 11 is the swinging member shaft 1
It swings in the direction of arrow B with 0 as the fulcrum.

As the swinging member 11 swings, the lifting link 12 also moves up and down in the direction of arrow C, and when the lifting link 12 rises, the lifting net claw 13 of the net lifting device 14 enters the mesh of the fixed net 16 and pulls up the fixed net 15. , lifting link 1
When the net 2 descends, the net lifting claws 13 come off the mesh and the fixed net 15 is not pulled up. In this case, since the eccentric positions of the lifting cams 3 installed in parallel are different from each other, the weight of the catch during hoisting the net does not act locally on a part of the fixed net, and furthermore, the net is not damaged. Since the mesh is made of a material that does not damage the mesh, the mesh is not damaged by the lifting mesh claws 13. Furthermore, by controlling the amount of oil supplied to the hydraulic motor 4 and regulating the number of revolutions of the cam drive shaft 1, the net hoisting speed can be freely adjusted.

The present invention consists of a cam drive shaft whose ends are pivotally supported by both support plates of a deck stand arranged in parallel on the deck, and a cam drive shaft to which a plurality of eccentric lifting cams are fixed at required intervals. A swinging member shaft is fixed at both ends near the tips of both support plates, and a swinging member shaft is swingably supported near the center on the swinging member shaft, one end abutting the lower end of the lifting cam, and the other end being a lifting member shaft. the cam drive shaft is driven by a device fixed to the support plate;
Since the lifting link is a net lifting device characterized in that a net lifting device that is caught on the rising sieve is fixed to the lower end, the following effects are achieved.

(1) The conventional manual work of lifting nets can be mechanized, improving fishing efficiency.

(2) By mechanizing the net-lifting work, damage to fish catches can be reduced and fishery resources can be used more effectively.

(3) Damage to the fishing net can be prevented because the net lifting speed can be freely selected according to the amount of catch.

(4) Despite its efficiency, it has a simple structure and does not require any special equipment, so it can be provided at low cost.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic explanatory diagram showing how to use the device, and FIG. 2 is a perspective view. 1...Cam drive shaft, 2, 2'...Support plate, 3...
...lifting cam, 6...deck, 9,9'...deck stand, 10...swinging member shaft, 11...swinging member, 12...lifting link, 14...net lifting device.

Claims (1)

[Scope of utility model registration request] A cam drive shaft whose both ends are pivotally supported by both support plates of deck stands arranged in parallel on the deck, and a cam drive shaft to which a plurality of eccentric lifting cams are fixed at required intervals, and both support plates parallel to the cam drive shaft. A swinging member shaft has both ends fixed near the tip of the swinging member shaft, and a swinging member shaft near the center is swingably supported on the swinging member shaft, one end abuts the lower end of the lifting cam, and the other end is a lifting link. The cam drive shaft is driven by a device fixed to the support plate, and the lifting link is configured to move a net hoisting device that is caught on the rising mesh at the bottom end. A net lifting device characterized by being fixed.