JP5543258B2 - Tugboat winch - Google Patents

Description

  The present invention relates to a winch for a tugboat that feeds out or winds up a tow rope and a towing chain.

  When a large ship such as a tanker enters or exits a harbor, it is towed by a tugboat to guide the pilotage. Winding, feeding, and winding operations are performed. Also, the tugboat dredging and winding are done in the same winch. (For example, see Patent Document 1.)

  FIG. 8 is a plan sectional view showing the configuration of a conventional winch. As shown in FIG. 8, a conventional winch is provided with a first drum 100 for winding a tow rope (not shown) and a second drum 200 for winding a towing chain (not shown). The shaft 300, the first clutch 110 provided on the shaft 300, which turns on and off the transmission of power from the hydraulic motor 400 as a drive source to the first drum 100 and the drive source to the second drum 200. A second clutch 220 that turns on and off the transmission of the power is generally used.

  Further, as shown in the figure, the shaft body 300 is supported via a metal 610 in a bearing portion 600 at the upper end of a frame 500 erected from a deck or the like, and further, the drums 100 and 200 and the clutches 110 and 220 are supported. Are supported via a metal 700 or the like.

  In the example illustrated in FIG. 8, the second drum 200 and the second clutch 220 are arranged on the left and right sides of the first drum 100, respectively. In the figure, a reference numeral 800 denotes a gear case, which houses a first gear 810 connected to the transmission shaft 410 of the hydraulic motor 400, a second gear 820 that meshes with the first gear 810, and the like.

JP 2009-269683 A

  However, in the above-described conventional winch, the sliding portion between the shaft body 300 and the members such as the first drum 100, the second drum 200, the first clutch 110, and the second clutch 220 is seized. In order to prevent rusting, periodic grease application was necessary.

  Therefore, even if the grease is properly applied at an appropriate timing, the grease falls on the floor surface or scatters around the winch, so that the dirt around the winch becomes severely contaminated with the grease. Therefore, unnecessary grease cleaning work is required, and an unnecessary service burden is generated on the crew. In addition, the removed grease may be accidentally dumped into the sea, which is not preferable from the viewpoint of environmental protection.

  Furthermore, if the clutch is operated during the winch cleaning operation, there is a risk of injury due to a finger being caught, so maintenance such as cleaning of the winch is preferably requested to be unnecessary. There is.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a maintenance-free tugboat winch in which at least a clutch has a sealed structure in which grease is enclosed.

(1) The present invention is installed on the deck of the ship, met tow rope (10, 10) and feeding an anchor for chain (20, 20) and rollable configured the tug winch (A) The shaft (3) is linked to the transmission shaft (21), which is the output shaft of the hydraulic motor (M), via various gears, and the base end and the tip of the shaft (3) are automatically aligned. The bearing is supported by a gear case (7) of various gears and a support frame (6, 6) through a bearing (4), and the support portion by the bearing (4) has a sealed bearing structure by a seal member (40). The body (3) has a first drum (1) for winding the rope (10) at a position far from the transmission shaft (21), and a first chain (20) for winding the kite chain (20) at a position near the transmission shaft (21). The two drums (2) are loosely fitted, and the first drum (1 The first clutch (11) is interposed between the shaft and the shaft body (3), and the second clutch (22) is interposed between the second drum (2) and the shaft body (3). The first clutch (11) and the second clutch (22) are provided with fixed tooth portions (11a, 22a) provided on the first and second drums (1, 2) side, and a shaft body (3 ) And a dog tooth clutch (11b, 22b) which is slidable in the axial direction via the first and second keys (31, 32) and is integrally rotatable. An annular groove grease reservoir (12) is provided on the inner peripheral surface of the sliding teeth (11b, 22b) of the second clutch (11, 22), and the grease reservoir (12) is filled with grease in advance. The grease in the grease reservoir (12) is leaked by the seal members (14, 14) provided at the front and rear ends in the axial direction of the moving teeth (11b, 22b). Two grease nipples (13) communicating with the grease reservoir (12) are provided on the outer peripheral surface of the sliding tooth portion (11b, 22b) so as not to leak, so that one of the grease nipples is filled with the grease. (13) is configured to be able to be filled with grease from the other grease nipple (13), and further, the sliding tooth portions (11b, 22b) of the first and second clutches (11, 22). The sliding surface (S) is provided with a rust preventive treatment for polishing after overlay welding by SUS so as to prevent the occurrence of rust caused by wave splashing .

  According to the present invention, the first drum that winds the tow rope, the second drum that winds the towing chain, and the first drum that winds the tow rope around the shaft body that is linked and rotated with the drive source. The first clutch for turning on and off the transmission of power to the drum and the second clutch for turning on and off the transmission of power to the second drum are slidably mounted, and sliding between each clutch and the shaft body It is possible to prevent grease or the like from leaking from the portion. Therefore, there is no concern that the periphery of the winch is contaminated by the grease, and the grease cleaning work itself is not necessary, so that useless labor can be saved.

It is explanatory drawing by the side view of a tugboat provided with the winch which concerns on this embodiment. It is explanatory drawing by the same planar view. It is explanatory drawing by the longitudinal cross-sectional view of the winch which concerns on this embodiment. It is a principal part enlarged view of the winch. It is a side view of the winch. It is a top view of the winch. It is sectional drawing in the II line | wire of FIG. It is a plane sectional view of the conventional tugboat winch.

  A tugboat winch (hereinafter sometimes simply referred to as “main winch”) A according to the present embodiment will be specifically described with reference to FIGS. A tugboat equipped with a main winch moves backward when towing a large ship or the like. As shown in FIGS. 1 and 2, the main winch A is provided on the front deck of the bridge B provided on the hull. ing.

  The winch A is disposed on the left and right sides with respect to the traveling direction, and a rope leader R for guiding the tow rope 10 is erected in front of the winches A and A.

  In the present embodiment, one rope leader R and two right and left winches A, A constitute a towing section, and two tow ropes (hereinafter, simply referred to as “ropes”) 10 , 10 can be operated, but two sets of towing units with one rope leader R can be installed on the left and right for one winch A.

  The winches A and A arranged in a pair on the left and right are symmetrical with each other and may be said to be substantially the same. Therefore, in the following, in order to facilitate understanding, they are arranged on the left side in the traveling direction. The winch A is described, and the description of the winch A disposed on the right side is omitted.

  As shown in FIG. 3, the winch A is linked to a hydraulic motor M that is a driving source, and a first drum 1 that winds the tow rope 10 and a second drum 2 that winds the towing chain 20. The shaft body 3 is provided with a plurality of alignment functions provided at predetermined positions including the upper ends of the support frames 6 and 6 erected on the base frame 5. It is supported by a plurality of bearings 4. That is, a self-aligning roller bearing is used as the bearing 4.

  A first clutch 11 that turns on and off the transmission of power from the hydraulic motor M to the first drum 1 is attached to the shaft body 3 via a first key 31 (see FIG. 7), and the hydraulic motor A second clutch 22 that turns on and off the transmission of power from M to the second drum 2 is attached via a second key 32.

  In FIG. 3, reference numeral 7 denotes a gear case. The first gear 71 provided on the transmission shaft 21 of the hydraulic motor M, the second gear 72 attached to one end of the shaft body 3, the second gear 72, A free gear 73 interposed between the first gear 71 and the first gear 71 is accommodated.

  With this configuration, the rotational force from the hydraulic motor M is transmitted at a predetermined reduction ratio from the first gear 71 to the idle gear 73 to the second gear 72, and the shaft body 3 can be rotated.

  And if the 1st clutch 11 is connected, rotation of the shaft 3 will be transmitted to the 1st drum 1, and the rope 10 can be drawn out or taken up (refer FIG.1 and FIG.2). .

  On the other hand, when the second clutch 22 is connected, the rotation of the shaft body 3 is transmitted to the second drum 2 so that the rod chain 20 can be fed out or wound up.

  By the way, in FIG. 3 or FIG. 4, the 1st clutch 11 and the 2nd clutch 22 have shown the non-connection state in the upper display part of the shaft 3, and the connection state in the lower display part.

  The winch A is characterized in that, in the configuration described above, the first clutch 11 and the second clutch 22 have a sealed structure, and leakage of grease sealed in the first clutch 11 and the second clutch 22 is prevented. In addition, in this embodiment, since the shaft body 3 is supported by the bearing 4 with the alignment function, grease or the like does not leak from any part of the shaft body 3, and the winch periphery due to scattering or dropping of the grease The dirt is gone.

  That is, as shown in FIGS. 3 and 4, the first clutch 11 according to the present embodiment has the fixed tooth portion 11 a provided on the first drum 1 side and the first key 31 on the shaft body 3. And a dog clutch comprising a sliding tooth portion 11b that is slidably attached in the axial direction and is engaged when both are engaged. Here, the dog clutch refers to a so-called “meshing clutch” and is also called a claw clutch. In the figure, reference numeral 11c denotes a fork for engaging with the sliding tooth portion 11b and sliding in the axial direction.

  A grease reservoir 12 is provided in an annular shape on the inner peripheral surface of the sliding tooth portion 11b and filled with grease in advance, and a seal member 14 is provided at each of the front and rear ends in the axial direction of the sliding tooth portion 11b. The grease filled in 12 is in a sealed state. The grease reservoir 12 is not limited to one, and a plurality of grease reservoirs 12 may be provided.

  In addition, two grease nipples 13 communicating with the grease collecting groove 12 are provided on the outer peripheral surface of the sliding tooth portion 11b so as to be point-symmetric. When the grease is filled, one grease nipple 13 is provided. And a grease gun (not shown) may be connected to the other grease nipple 13 so that the grease overflows from one side.

  In addition, the sliding surface S of the sliding tooth portion 11b in the shaft body 3 is subjected to a rust preventive treatment that is polished after overlay welding with SUS, and no rust is generated even when splashing or the like is applied. Smooth clutch operation is realized anytime.

  By the way, in this winch A, although there is a difference in size, the second clutch 22 is also constituted by a dog clutch having the same structure as the first clutch 11 described above. Therefore, although description here is abbreviate | omitted, like the 1st clutch 11, the grease is maintained in the sealed state and does not leak out. 3 and 4, reference numeral 22a indicates a fixed tooth portion, reference numeral 22b indicates a sliding tooth portion, and reference numeral 22c indicates a fork.

  The plurality of bearings 4 that support the shaft body 3 are self-aligning roller bearings, and include a seal member 40. Thus, since it has a centering function, for example, even if a belt is wound around the first drum 1 or the like and the brake is applied, the shaft body 3 can be smoothly rotated and there is a risk of seizure. Therefore, the durability is remarkably improved as compared with a conventional bearing structure made of metal or the like. Further, in the present embodiment, a bearing made of bronze metal is adopted for the second drum 2, but a groove portion (not shown) that also serves as a grease reservoir is formed, and both ends of the bearing are sealed. Sealed bearing structure. Therefore, it is possible to prevent the intrusion of seawater into the metal part, to prevent a malfunction due to rusting, which has been generated conventionally, and to prevent grease leakage.

  Thus, in this winch A, seizure and rust prevention can be prevented, and grease and the like are not leaked from any part of the shaft body 3, and the dirt around the winch due to scattering and dropping of grease is eliminated. The grease cleaning work itself becomes unnecessary, reducing the burden on the crew. Further, since the grease does not fall into the sea, it can be said that the winch structure is preferable from the viewpoint of environmental protection. And since the bearing 4 which consists of a self-aligning roller bearing is used, durability is also improving remarkably.

  Further, as shown in FIGS. 3, 4 and 7, the clutch cover 8 is provided to surround the meshing teeth of the first clutch 11, that is, the meshing portion of the fixed tooth portion 11a and the sliding tooth portion 11b. .

  As shown in FIG. 7, the clutch cover 8 is formed by connecting two SUS belt bodies 80 and 80 in an annular shape, with a predetermined interval from the fixed tooth portion 11 a and the sliding tooth portion 11 b. At the position, the rib 15 formed on the side plate of the first drum 1 is fixed with a bolt 82.

  In this winch A, the clutch cover 8 is provided only in the first clutch 11, but it can also be provided in the second clutch 22.

  When the clutch is operated, the fork 11c is remotely operated. Therefore, conventionally, it is very dangerous if the fork 11c is remotely operated when there is a crew member or the like who maintains the winch A. However, since the winch A is provided with the clutch cover 8, a hand is put on the meshing portion. It is possible to prevent accidents such as pinching. In particular, since the winch A has a maintenance-free configuration that does not leak grease and does not require replenishment of grease, it is rare that a person approaches the winch A, and thus the safety is higher.

  From the embodiment described above, the following tugboat winch can be realized.

  (1) Provided on the deck of the hull (tug boat), can tow and wind up the tow rope 10 and the tow chain 20, and is linked to a drive source (for example, a hydraulic motor M) to link the tow rope 10 A shaft body 3 to which a first drum 1 for winding the shaft and a second drum 2 for winding the scissor chain 20 are attached, a bearing 4 with an alignment function for supporting the shaft body 3, and the shaft A first clutch 11 provided on the body 3 for turning on and off the transmission of power from the driving source to the first drum 1 and a second clutch for turning on and off the transmission of power from the driving source to the second drum 2 The tugboat winch A has a sealing structure in which each of the clutches (the first clutch 11 and the second clutch 22) is sealed with grease.

  According to such a tugboat winch A, grease or the like can be prevented from leaking from the sliding portion between each clutch (the first clutch 11 and the second clutch 22) and the shaft body 3. There is no worry about getting around the winch, and the grease cleaning work itself becomes unnecessary, so that unnecessary labor of the crew can be saved.

  (2) In the configuration of (1), a tugboat winch in which the bearing 4 has a sealed structure and prevents leakage of grease filled in the bearing 4 and the clutch (the first clutch 11 and the second clutch 22). A.

  According to the tugboat winch A, the effect of the above (1) can be further enhanced to be a maintenance-free winch, and the durability can be remarkably improved since seizure and rust can be prevented.

  (3) In the configuration of (1) or (2) described above, for a tugboat including the clutch (first clutch 11 and second clutch 22) as a dog clutch and including a clutch cover 8 surrounding the meshing teeth of the clutch Winch A.

  According to such a tugboat winch A, there is no possibility of fingers being caught in the clutch, and safety is improved.

A Tugboat winch M Hydraulic motor (drive source)
DESCRIPTION OF SYMBOLS 1 1st drum 2 2nd drum 3 Shaft body 4 Bearing 8 Clutch cover 10 Towing rope 11 1st clutch 20 Shaft chain 22 2nd clutch

Claims (1)

A tugboat winch (A) installed on the deck of a hull and configured to allow a tow rope (10, 10) and a tow chain (20, 20) to be fed and wound up,
The shaft body (3) is linked to the transmission shaft (21), which is the output shaft of the hydraulic motor (M), via various gears,
The base end portion and the tip end portion of the shaft body (3) are supported by the gear case (7) and the support frame (6, 6) of various gears via the bearing (4) of a bearing made of a self-aligning roller, and the bearing (4 ) Is a sealed bearing structure with a seal member (40),
On the shaft body (3), the first drum (1) for winding the rope (10) at a position far from the transmission shaft (21) is wound, and the rod chain (20) is wound at a position near the transmission shaft (21). Each second drum (2) is loosely fitted,
Moreover, the first clutch (11) is provided between the first drum (1) and the shaft body (3), and the second clutch (2) and the shaft body (3) are provided with the first clutch (11). 2 clutches (22),
The first clutch (11) and the second clutch (22) are fixed to the fixed tooth portions (11a, 22a) provided on the first and second drums (1, 2) side and to the shaft body (3). 1. A dog clutch composed of sliding tooth portions (11b, 22b) which are slidable in the axial direction via the second key (31, 32) and are integrally rotatable.
An annular groove grease reservoir (12) is provided on the inner peripheral surface of the sliding tooth portion (11b, 22b) of the first and second clutches (11, 22), and the grease reservoir (12) is prefilled with grease. In addition, the seal members (14, 14) provided at the front and rear ends in the axial direction of the sliding teeth (11b, 22b) are sealed so that the grease in the grease reservoir (12) does not leak,
By providing two grease nipples (13) communicating with the grease reservoir (12) on the outer peripheral surface of the sliding tooth portion (11b, 22b), one grease nipple (13) is removed when filling the grease, and the other Configured to be able to fill with grease from the grease nipple (13),
Furthermore, the sliding surfaces (S) of the sliding tooth portions (11b, 22b) of the first and second clutches (11, 22) are subjected to a rust-proofing treatment that is polished after build-up welding by SUS, for example, from wave splashing. A tugboat winch characterized by being configured to prevent the occurrence of rust .

Images