JPS6348634Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention is a winch used for winding up a wire rope (hereinafter referred to as "wire rope") installed at the hem of a purse seine as a netting tool. , relates to a winding winch for untwisting wire rope that occurs when winding it up.

(Prior art) Purse nets are cast to encircle a school of fish, and then the hem of the net is tightened with a wire rope to prevent fish from escaping from the bottom of the net. It's something that will happen. When the net hem is fastened, both ends of the wire rope are wound up using separate winches. The wire rope that has been wound on two winches must be wound on one of the winches for the next cast.
However, when both ends of a single wire rope are wound up with two winches, twists occur in the center. Therefore, if the wire rope wound on one winch is transferred to the other winch in this state, the wire rope will be wound on the winch with the twist still formed.
There is a risk that this part will become weak and break during use. Furthermore, when transferring the wire rope from one winch to the other, the wire rope is transferred via a pulley, but at that time, there is a risk that the twisted portion may get caught on the pulley, causing an accident such as the pulley being torn off.

Conventionally, when untwisting a wire rope, the wire rope wound on one winch was unwound, a splitter was attached to the tip, and the rope was dropped into the sea to be untwisted. One of the winches was formed to be able to freely rotate, and the swivel winch was rotated in the direction of untwisting to untwist.

(Problem to be solved by the invention) However, among the conventional techniques, the former has the problem of poor workability because the wire rope must be pulled out from the winch each time the wire rope is untwisted. It was hot. In addition, in the latter case, the winch must be rotated as a whole to untwist the wire rope.
Sufficient installation space must be provided for the winch to swivel, and a structure for swiveling the winch is also required, which makes the equipment expensive and prevents workers from touching the winch when swiveling. There were problems such as injuries.

The present invention was devised in view of these problems of the conventional technology, and its purpose is to create a winding wire rope that can be untwisted very easily and has a very simple structure. We are trying to provide winches for nets.

(Means for Solving the Problems) In order to achieve the above object, the winch for purse seine of the present invention has a drive shaft whose tip is an unsupported end, and a winding drum provided at the base end of the drive shaft. and a twist removal section provided on the tip side of the drive shaft, and a configuration in which the winding drum is provided with rope locking means.

(Function) The winding winch of the present invention has a drive shaft with an unsupported end, a winding drum provided at the base end of the drive shaft, and a twisting section provided at the tip end of the drive shaft. In addition, since the winding drum is provided with rope locking means, when winding the wire rope, the wire rope is first wound around the winding drum. When the twisted part of the wire rope is reached, the winding drum is stopped before the twisted part, and the untwisted part of the wire rope is held in front of the twisted part by the rope locking means. to prevent the wire rope wound around the winding drum from unraveling when the twisted part is wound around the winding part. Next, hold the twisted portion of the wire rope in your hand and untwist the wire rope by winding it around the twisting portion in the direction of untwisting the wire rope. Then, the untwisted wire rope is removed from the twisting section, the locking section is removed from the rope locking means, and the winding drum is rotated to wind the wire rope onto the winding drum. It is something.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. The drawing shows a winch A for purse seine, which is an embodiment of the present invention.

First, the configuration of this embodiment will be explained.

In the figure, reference numeral 1 denotes a drive shaft, the lower end of which is pivotally supported by the machine base 2, and the upper end of which is installed vertically with no support.
It meshes with the pinion 5 provided on the hydraulic motor 4,
The rotary power from this hydraulic motor 4 is used to decelerate the rotation. Note that the hydraulic motor 4 is a forward/reverse rotation type motor.

Reference numeral 6 denotes a winding drum, which has flanges 6b and 6c provided on the upper and lower sides of a body portion 6a, and is loosely supported on the lower end side of the drive shaft 1 via metal bearings 7, 7.
Incidentally, reference numeral 8a denotes a brake cylinder provided on the outer surface of the lower flange 6b, and the rotation of the winding drum 6 is fixed by tightening the brake cylinder 8a with a brake shoe 8b.

Denoted at 9 are locking slits as rope locking means, which are located at multiple locations on the outer periphery of the flange 6c (in the embodiment).
U-shaped notches are formed at 3 locations at 120 degree intervals.

Next, 10 is a twisting drum as a twisting section, which is slidable in the axial direction on the tip of the drive shaft 1;
It is installed in a fixed state in the direction of rotation.
In addition, 11 is a sliding operation handle, and a handle 11b is provided at the upper end of the screw rod 11a, and the screw rod 1
1a is screwed through the upper surface plate 10a of the twisting drum 10, its tip is brought into contact with the upper end surface of the drive shaft 1, and the threaded rod 11a is rotated by rotation of the handle 11b. The above twisting drum 10
is made to slide in the axial direction.

12 is a clutch, which has one clutch pawl formed on the upper end surface of the winding drum 6 and
The twisting drum 10 and the winding drum are connected to each other by sliding of the twisting drum 10 as the sliding operation handle 11 is rotated. 6 is connected or separated. Therefore, clutch 12
In the engaged state, the rotational power from the hydraulic motor 4 is transmitted from the drive shaft 1 to the twisting drum 10, and further from the twisting drum 10 to the winding drum 6 via the clutch 12. . Furthermore, when the clutch 12 is released, the rotational power from the hydraulic motor 4 is only transmitted from the drive shaft 1 to the twisting drum 10, but not to the winding drum 6. In addition, what is indicated by R is a wire rope for winding nets.

Next, the operation of this embodiment will be explained.

In explaining the operation of this embodiment, an example will be described in which the winch of this embodiment is used for both of the two winches that wind up the wire rope.

When winding the wire rope R, one end of the wire rope R is connected to the winding drum 6 of each winch A, and then the clutch 12 is engaged and the rotational power from the hydraulic motor 4 is used to wind the wire rope R. The wire rope R is wound around the winding drum 6 while rotating the winding drum 6.
The wound wire rope R must be transferred to one of the winding drums 6 for the next net casting, but since one wire rope R is wound with two winches A, the center Twisting occurs in some parts. Therefore, unless this twist is untwisted, it cannot be transferred to one winch. Therefore, when transferring the wound wire rope R to one of the winches A, it is done after untwisting it as follows. That is, with the hydraulic motors 4 of both winches A stopped, the wire rope R is wound into the rope locking slit 9 of the winch A,
Hold the untwisted part of the wire rope R in front of the twisted part by hand to lock it. Next, the twisted portion of the wire rope 6 is held by hand and wound around the twisting drum 10 of the winch in the direction of untwisting the rope (opposite to the direction of twisting) to untwist the rope. Then, in this state, the rope is pulled and untwisted, and then removed from the twisting drum 6. After removing the rope from the rope locking slit 9, the winding drum 6 is rotated to wind the wire rope R. It is for winding up on a take-up drum 6. In addition, in this embodiment, a clutch is provided,
Since the power transmission to the winding drum 6 can be interrupted, the winding operation can be easily performed by releasing the clutch of the winch A on which the wire rope R is wound and freeing the winding drum 6. be able to.

Although one embodiment of the present invention has been described above with reference to the drawings, the specific configuration of the present invention is not limited to the illustrated example described above.

For example, the drive shaft is not limited to the vertical shaft shown in the illustrated example, but may be a so-called cantilevered horizontal shaft as long as it has an unsupported end.

Further, as the driving means, an electric motor may be used instead of the hydraulic motor 4, and the drive shaft 1 may be directly connected to the motor without intervening the reduction gear 3.

Further, in the embodiment, the power transmission structure is provided with a clutch 12, but this clutch 12 is not necessarily necessary. For example, the winding drum and the twisting drum may be respectively fixed to the drive shaft. .

Further, as for the twist removal section, it is not necessarily necessary to use the twist removal drum 10. For example, the drive shaft itself may be used as the twist removal section, and the wire rope may be directly wound around this drive shaft. There is no restriction on the specific structure as long as the tip of the drive shaft is an unsupported end and a wire rope can be wound around the tip.

Further, the rope locking means is not limited to the locking slit 9 shown in the drawings, and a separately manufactured locking metal fitting may be attached to the winding drum, for example.

Moreover, the winding winch of the present invention may be used as one of two winches that wind up both ends of a wire rope, and the other winch may be a conventional winch.

(Effect of the invention) As explained above, in the purse seiner winch of the invention, the wire rope is locked to the rope locking means, and the twisted part of the wire rope is transferred to the untwisting part. After winding in the untwisting direction and untwisting the wire rope, the wire rope is removed from the rope locking means and the winding drum is rotated to untwist and wind the wire rope, resulting in good workability.

Furthermore, the winch of the present invention does not require a turning space unlike the conventional winch, so the installation space can be reduced.

Furthermore, with the winch of the present invention, unlike conventional winches, it is not necessary to turn the winch, so there is no accident caused by contact when turning, and the winch is safe.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a winding winch according to an embodiment of the present invention, and FIG. 2 is a side view of the winch in use. A: Winch for purse seine, R: Wire rope, 1:
Drive shaft, 4: Hydraulic motor, 6: Winding drum,
9: locking slit (rope locking means), 10: twisting drum (twisting section), 12: clutch.

Claims (1)

[Scope of utility model registration request] A drive shaft having an unsupported tip end, a winding drum provided at the base end side of the drive shaft, and a twisting section provided at the front end side of the drive shaft, and a rope is attached to the winding drum. A winch for purse seine characterized by being provided with a locking means.