JPH0142459Y2 - - Google Patents

Description

[Detailed description of the invention] ``Industrial application field'' This invention relates to a countershape hoist drive pulley installed at the stern of the ship.

``Prior art'' In the conventional counterbore mesh winding pulley, wheel-shaped protrusions were formed of hardened rubber on taper disks tilting away from each other in the boss section, and were removably attached with bolts. The frictional resistance of the protrusions is large, and as a result, there is little mutual sliding between the net line of the fishing net, that is, the upper line, the rock line, and the protrusion. As the protrusions are tightened and tightened, the protrusions are subject to severe wear and have an extremely short service life. Since the wide net between the net ropes does not slip and is concentrated and tightened toward the boss, the net is pushed between the horizontal protrusions of the boss, and the net threads are formed at the boundary between the protrusions and the wheel-like protrusions. It gets stuck and cannot be removed. For this reason, the net threads break when pulled, so it is necessary to repair the cut portions for each net.

``Problems to be solved by the invention'' The present invention is designed to cause the net line and pulley to slip slightly, and cause the wheel on the inner surface of the pulley to rotate in the hoisting direction when the stern is raised. The purpose of this invention is to reduce the wear of the protrusions and to prevent the cutting of the net threads of a wide gouging net that is loose in the direction perpendicular to the pulling direction between the net ropes.

``Means for Solving the Problems'' This proposal provides a machine frame installed at the stern with a boss on a horizontal axis perpendicular to the ship's direction of travel, and the boss includes tapered discs that tilt in directions away from each other. A plurality of horizontal protrusions are provided at equal intervals on the outer circumferential surface of the boss, and between the protrusions, a wheel-shaped protrusion extending from the outer circumferential surface of the boss toward the outer circumference of the tapered disk is removably bolted to the inner surface of the disk. A fishing net hoisting pulley comprising: the wheel-like protrusion made of metal; and a mesh thread entry/exit gap interposed between the lower side surface of the wheel-like protrusion and the horizontal protrusion. It is in.

``Function'' Therefore, when the stern of the ship is raised by waves, the fishing net 17 and the net line 17', 1 supported in the approximately V-shaped groove-shaped pulley by the tapered discs 6, 6 and the boss portion 5.
7'' is tightened between the opposing vehicle-like protrusions 12, 12 toward the horizontal protrusion 11, but the net 17 is loosened in the direction perpendicular to the traction direction between the two net ropes 17', 17'', so it is tightened horizontally. It is pushed into the valley between the directional projections 11 and 11 and between the wheel-like projections 12 and 12, and is further pushed into the entrance/exit gap t between both projections 11 and 12, but when the pulley rotates (the stern descends) When the net 17 and the ropes 17', 17'' slide during the sliding of the net 17 and the ropes 17', 17'', the net yarn pushed into the gap t escapes from the gap t without being caught.
7'' is tensioned when being towed and easily slides in contact with the wheel-shaped projection 12 with little frictional resistance.

"Example" A machine frame 2 is provided at the stern of a fishing boat 1, and a horizontal shaft 3 perpendicular to the traveling direction of the boat 1 is rotatably supported on the machine frame 2 by bearings 4, 4. The boss part 5 is fixedly provided in the rotational direction and the sliding direction, and tapered discs 6, 6 are provided on the outer peripheral surface of the boss part 5 and tilted in directions away from each other at intervals. An internal gear 7 is provided on the outside of the outer periphery of the machine frame 2, and a driving pinion 8 is meshed with the internal gear 7. The driving pinion 8 is connected to the output shaft 10 of a hydraulic motor 9 installed in the machine frame 2, and a driving pulley ( drive pulley). The boss part 5
A plurality of horizontal protrusions 11 are provided at equal intervals on the outer circumferential surface of the disk, and a wheel-shaped protrusion 12 extending from the outer circumferential surface of the boss portion 5 toward the outer circumference of the tapered disc 6 is provided between the protrusions 11 and 11 on the inner surface of the tapered disc 6. It is removably fixed by bolts 13. The vehicle-shaped protrusion 12 is made by vertically cutting a steel pipe to form a circular steel plate 12', forming both ends thereof, and fitting a steel bottom plate 12'' to the circular steel plate 12'.Four bolt holes are drilled in the circular steel plate 12'. A gap t is also provided between one end and both side surfaces 14, 14 and the horizontal protrusions 11, 11, through which the net thread can freely enter and exit. In addition, what is shown by 15 in the figure is the direct inner roller of the gouging net provided in the machine frame 2, 1
6 is an edge plate that covers the outer peripheral edge of the tapered disk 6.

"Effects" The present invention is constructed as described above, and when the vehicle-like protrusion 12 rotates and floats, the gouging net 17 and the net ropes 17', 17'' slip on the protrusion 12, so the protrusion 12 is not easily worn out. Not only can the service life of the protrusion 12 be significantly improved, but even if the mesh thread of the net 17 supported by the boss portion 5 is pushed into the gap t between the wheel-shaped protrusion 12 and the horizontal protrusion 11, the boss portion 5 Since it is easily removed when the mesh is rotated, there is no fear that the threads will be pulled or cut, and the wheel-like protrusion 12 can be easily attached.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the sunken mesh winding pulley of the present invention, Fig. 2 is a side view taken along the line A-A in Fig. 1, and Fig. 3
The figure is a perspective view of the cartilage-like projection, and Figure 4 is Figure 1 B-B.
FIG. 5 is a side view of the embodiment. 2... Machine frame, 1... Ship, 3... Horizontal axis, 5...
Boss portion, 6...Tapered disc, 11...Horizontal projection, 12...Vehicle-shaped projection, 13...Bolt, t...
...Gap between mesh thread entry and exit.

Claims (1)

[Scope of utility model registration request] A boss part is installed on the machine frame installed at the stern of the ship on a horizontal axis perpendicular to the direction of travel of the ship, and taper discs are installed in the boss part that tilt in directions away from each other, and are spaced horizontally at equal intervals on the outer circumferential surface of the boss part. In a pulley in which a plurality of directional projections are provided, and a wheel-shaped projection extending from the outer peripheral surface of the boss portion toward the outer periphery of the tapered disc is removably bolted to the inner surface of the tapered disc between the projections, the wheel-shaped projection described above is provided. A fishing net winding pulley in which the protrusion is formed of metal, and a net line entry/exit gap is interposed between the lower side surface of the wheel-like protrusion and the horizontal protrusion.