JP2013249146A - Winch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winch device capable of preventing grease from dropping onto a deck.SOLUTION: A winch mechanism 10 includes a shaft 18 to be rotated when a motor 11 operates, a drum 12 rotatably attached to the shaft 18, a drum-side crutch 14 with its one side fixed to the drum 12 and the other side comprising a first pawl mechanism 36, and a movable crutch 13 attached to the shaft 18 to integrally rotate with the shaft 18, with its one side comprising a second pawl mechanism 29 engaging with the first pawl mechanism 36. The winch mechanism transmits the drive force of the motor 11 to the drum 12 by engaging the first and the second pawl mechanisms 36, 29 with each other. A cover body 39 is provided for covering the first and the second pawl mechanisms 36, 29 and a seal member 30 that seals a gap between the movable crutch 13 and the shaft 18 at the other side of the movable crutch 13. A liquid lubricant located in the gap between the movable crutch 13 and the shaft 18 and on the inside of the cover body 39 is prevented from leaking outside by the cover body 39 and the seal member 30.

Description

The present invention relates to a winch device mounted on a ship such as a tugboat.

The tugboat is equipped with a winch device that winds and unwinds a tow chain, winds and unwinds a tow rope, and a specific example is described in Patent Document 1. Patent Document 1 discloses a winch device for a crane mechanism that prevents the boom of the crane mechanism from coming into contact with another ship or the like, which is effective in ensuring safety.

By the way, the winch device transmits the driving force from the motor to the drum via the shaft and the clutch mechanism and rotates the drum, thereby winding and feeding the chain and rope.
If the clutch mechanism employs a dog clutch that has a drum-side block fixed to the drum and a movable block that moves along the sliding portion of the shaft and meshes with the drum-side block, the sliding portion will rust. It is important to prevent

This is because if the sliding portion that guides the movement of the movable block is rusted, a malfunction is caused. In particular, if the movable block is not moved for a long time in a state in which the sliding portion is rusted, the movable block adheres to the sliding portion, which is inconvenient during emergency use.
Seawater contact with the sliding part causes rusting on the sliding part. Applying grease to the sliding part to prevent seawater from directly touching the sliding part will cause rusting on the sliding part. It is effective to suppress.

JP-A-2005-254878

However, grease could fall on the deck, causing a risk for workers to slip their feet. Also, the grease that fell on the deck could lead to marine pollution, so the workers needed to clean the area around the winch device regularly.
This invention is made | formed in view of this situation, and it aims at providing the winch apparatus which suppresses that a grease falls on a deck.

The winch device according to the present invention that meets the above-mentioned object includes a shaft member that is rotated by operation of a motor, a drum that is rotatably attached to the shaft member, one side fixed to the drum, and a first claw on the other side. A drum-side clutch having a mechanism, a second claw mechanism that meshes with the first claw mechanism on one side, and a movable clutch that is attached to the shaft member and rotates integrally with the shaft member. In the winch mechanism that meshes the first and second pawl mechanisms and transmits the driving force of the motor to the drum, the cover body that covers the first and second pawl mechanisms and the other side of the movable clutch A liquid lubricant provided in the gap between the movable clutch and the shaft member and the inner side of the cover member by the cover member and the seal member; Suppresses leaking outside To.

In the winch device according to the present invention, it is preferable that an in-cylinder space is formed in the drum, and the space inside the cover body and the in-cylinder space are connected by a through hole.

The winch apparatus which concerns on this invention WHEREIN: It is preferable that the said through-hole is formed in the said drum side clutch.

In the winch device according to the present invention, it is preferable that the drum is formed with a discharge port through which the liquid lubricant accumulated in the in-body space is discharged.

In the winch device according to the present invention, the cover body is preferably provided with an air vent.

In the winch device according to the present invention, the cover body is fixed to the drum side clutch, and is attached to the cylindrical seal cover in which the first and second claw mechanisms are disposed inside, and the seal cover. An annular oil seal A that abuts the outer periphery of the movable clutch, and the oil seal A is provided with an end seal rubber P and an engagement portion at each end to connect the two engagement portions into an annular shape. It is preferable that the end seal rubber P is maintained in a state where one end is joined to the other end by the connection of two engaging portions of the spring S.

In the winch device according to the present invention, the sealing material is formed into an annular shape by connecting an end seal rubber Q in contact with the movable clutch and the shaft member, and engaging portions at both ends, and connecting the two engaging portions. It is preferable that the end seal rubber Q is maintained in a state in which one end is joined to the other end by the connection of the two engaging portions of the spring T. .

According to the winch device of the present invention, the cover body that covers the first and second claw mechanisms and the seal member that closes the gap between the movable clutch and the shaft member on the other side of the movable clutch are provided. Since the liquid lubricant in the gap between the movable clutch and the shaft member and the inside of the cover body is prevented from leaking out by the seal material, it is possible to suppress the grease from falling on the deck.

It is explanatory drawing of the winch apparatus which concerns on one embodiment of this invention. It is an enlarged view explaining the cover body of the winch device. It is explanatory drawing of the oil seal used with the winch apparatus. It is explanatory drawing of the 1st modification of the winch apparatus. It is explanatory drawing of the 2nd modification of the winch apparatus.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, a winch device 10 according to an embodiment of the present invention includes a motor 11, a drum 12 that is driven by a driving force of the motor 11, a movable clutch 13, and a drum side clutch 14. The transmission of the driving force from the motor 11 to the drum 12 is turned on and off using the movable clutch 13 and the drum side clutch 14. Details will be described below.

As shown in FIG. 1, the motor 11 is connected to a reduction gear 17 including a small gear 15 and a large gear 16, and a shaft 18 is fixed to the center of the large gear 16.
The small gear 15 and the large gear 16 are covered with a housing member 20 to which the bearing block 19 is fixed, and are designed to prevent an operator or the like from accidentally contacting.
One side of the shaft member 18 is rotatably supported by a bearing block 19, the drum 12 is rotatably attached to the center, and the other side is rotatably supported by a bearing block 22 attached to a bearing frame 21. Therefore, when the motor 11 is operated, the shaft member 18 rotates together with the small gear 15 and the large gear 16.
In the present embodiment, a hydraulic motor is adopted as the motor 11.

A drum side clutch 14 is rotatably attached to the shaft member 18 via a drum bush 23, and a rotating body 25 is rotatably attached via a drum bush 24.
Since the drum 12 around which the towing rope is wound is fixed to the drum-side clutch 14 and the rotating body 25, the rotational force of the shaft member 18 is not directly applied to the drum 12.

As shown in FIGS. 1 and 2, the shaft member 18 includes a polygonal portion 26 having a polygonal cross section, and the movable clutch 13 corresponds to the polygonal portion 26 as shown in FIG. A rectangular through hole 27 having a polygonal cross section and a circular through hole 28 provided continuously to the square through hole 27 are formed. The movable clutch 13 is attached to the shaft member 18 with the polygonal portion 26 inserted into the rectangular through hole 27 and rotates integrally with the shaft member 18.

The cross section of the polygonal portion 26 is smaller than the cross section of the rectangular through hole 27, and a gap is provided between the polygonal portion 26 and the movable clutch 13. Since this gap is filled with grease, which is an example of a liquid lubricant, the movable clutch 13 can move smoothly along the shaft member 18.
The movable clutch 13 includes a claw mechanism 29 (second claw mechanism) on one side, and an oil seal 30 (oil seal B), which is an example of a seal material, is attached to the other side. The annular oil seal 30 is fixed in the circular through hole 28 and closes the gap between the movable clutch 13 and the shaft member 18, so that the grease in the gap between the movable clutch 13 and the shaft member 18 It is designed not to leak out from the other side.
A stop ring 31 is fixed to the other side of the movable clutch 13 to keep the oil seal 30 fixed in the circular through hole 28.

The movable clutch 13 is provided with a fork 33 for moving along the shaft member 18 and a grease supply hole 34 extending from the outer periphery of the movable clutch 13 to the rectangular through hole 27. A grease nipple 35 is attached to the supply hole 34, and grease is supplied from the grease nipple 35 to the square through hole 27 through the supply hole 34.

As shown in FIGS. 1 and 2, one side (the side far from the movable clutch 13) is fixed to the drum 12, and the pawl mechanism 36 (first side) is disposed on the other side (the side closer to the movable clutch 13). The drum side clutch 14 having a claw mechanism is attached.
The claw mechanism 29 of the movable clutch 13 can be engaged with the claw mechanism 36 of the drum side clutch 14, and the movable clutch 13 moves toward the drum side clutch 14 to engage the claw mechanism 29 with the claw mechanism 36. The driving force of the motor 11 is transmitted to the drum 12 so as to drive and rotate the drum 12.
As shown in FIG. 2, a supply hole 38 to which a grease nipple 37 is attached is formed in the drum side clutch 14, and this supply is between the drum bush 23 attached to the drum side clutch 14 and the shaft member 18. Grease can be lubricated through the holes 38. The drum bush 23 is formed with a groove for guiding the grease that has passed through the supply hole 38 between the drum bush 23 and the shaft member 18.

A cover body 39 that covers the claw mechanisms 29 and 36 is attached to the drum-side clutch 14. The cover body 39 includes a cylindrical seal cover 40 fixed to the drum side clutch 14 and an annular oil seal 41 (oil seal A) that is attached to the seal cover 40 and abuts on the outer periphery of the movable clutch 13.
The seal cover 40 includes a cylindrical member 42 having one flange portion fixed to the drum-side clutch 14 and an annular attachment 44 fixed to the other flange portion of the cylindrical member 42 by a screw member 43. The claw mechanisms 29 and 36 are disposed inside the cylindrical member 42.
The attachment 44 and the cylindrical member 42 fixed to the cylindrical member 42 fix the oil seal 41 in a state where the oil seal 41 is sandwiched, so that the oil seal 41 is not removed by the movement of the movable clutch 13.

The grease supplied to the gap between the movable clutch 13 and the polygonal portion 26 of the shaft member 18 is prevented by the oil seal 30 from leaking from the other side of the movable clutch 13 (the side far from the drum side clutch 14). On the other hand, since the gap between the rectangular through hole 27 and the polygonal portion 26 of the shaft member 18 is not sealed on one side of the movable clutch 13 (the side close to the drum-side clutch 14), the movable clutch 13 and the polygonal portion are not sealed. The grease supplied to the gap 26 flows out from one side of the movable clutch 13. Therefore, the grease flows into the space where the claw mechanisms 29 and 36 are located inside the cover body 39, but the grease that flows into the cover body 39 leaks to the outside of the cover body 39 by the cover body 39. Sealed to prevent it from coming out.
Accordingly, the gap between the movable clutch 13 and the shaft member 18 and the grease inside the cover body 39 are in a state where leakage to the outside is suppressed by the oil seal 30 and the cover body 39.

The oil seal 41 is exposed to an operator's touch by loosening the screw member 43 and removing the attachment 44 from the tubular member 42.
As shown in FIG. 3, the oil seal 41 has an end seal rubber 45 (end seal rubber P) and a spring 48 (spring S) having engaging portions 46 and 47 at both ends, respectively. By connecting the portions 46 and 47, a ring shape is obtained. The spring 48 is attached to the end seal rubber 45 and the engaging portions 46 and 47 are connected to each other, so that one end of the end seal rubber 45 is joined to the other end and the outer periphery of the movable clutch 13 is 360 °. The abutting annular shape is maintained.
When the oil seal 41 is replaced, the oil seal 41 is exposed, the engagement portions 46 and 47 of the spring 48 are disconnected, the oil seal 41 is removed, and both ends of the end seal rubber 45 of the new oil seal 41 are joined. This can be easily performed by connecting the engaging portions 46 and 47 of the spring 48.

The oil seal 30 also has the same configuration as the oil seal 41, and includes an end seal rubber 49 (end seal rubber Q) that contacts the movable clutch 13 and the shaft member 18, and a spring 49a (spring T) that includes engaging portions at both ends. (See FIG. 2).
The spring 49a is formed into an annular shape by connecting the two engaging portions of the spring 49a, and the end seal rubber 49 is maintained in an annular state in which one end and the other end are joined. The end seal rubber 49 has an annular shape with one end joined to the other end, the outer periphery abuts on the circular through hole 28 of the movable clutch 13, and the inner periphery abuts on the shaft member 18.

As the movable block 13 moves toward the drum-side clutch 14 and the claw mechanism 29 meshes with the claw mechanism 36, a space is created between the stop ring 31 and the bearing block 22, and the stop ring 31 is in a removable state. Become. Since the oil seal 30 is exposed by removing the stop ring 31 from the movable block 13, the oil seal 30 can be easily replaced with a new one in the same manner as the oil seal 41.

Further, as shown in FIG. 1, the drum 12 is formed with an in-cylinder space 50 connected to the space inside the cover body 39. A through hole 51 shown in FIGS. 1 and 2 is formed in the drum-side clutch 14, and the space inside the cover body 39 and the in-body space 50 are connected by the through hole 51. Therefore, when grease is supplied from the grease nipple 35 through the supply hole 34, the grease accumulated in the space inside the cover body 39 is sent out from the space inside the cover body 39 and is passed through the through hole 51. Into the in-body space 50.

As shown in FIG. 1, the drum 12 has a discharge port 52 through which the grease accumulated in the in-body space 50 is discharged. A plug 53 is attached to the discharge port 52, so the plug 53 is removed. Thus, it is possible to discharge the grease accumulated in the in-body space 50.
Further, a part of the grease supplied to the drum bush 23 inside the drum side clutch 14 through the grease nipple 37 and the supply hole 38 flows into the cylinder space 50 through the gap between the drum bush 23 and the shaft member 18. To do. In addition, the grease supplied to the drum bush 23 is designed to flow into the space inside the cover body 39. The grease that has flowed into the inner space of the cover body 39 is also prevented from leaking outside by the cover body 39.

In the present embodiment, no air vent is formed in the cover body 39, but it is also possible to form an air vent 54 in the cover body 39 as shown in FIG. 4. When the air vent 54 is formed, the operation of feeding the grease into the gap between the movable clutch 13 and the shaft member 18 through the grease nipple 35 and the supply hole 34 becomes easy, and the operation of supplying the grease is completed. Can be visually confirmed. Specifically, it is possible to know the end of the grease supply operation by using the grease flowing out from the air vent 54.
In this embodiment, a manual extrusion pump is used for supplying grease.
The drum 12 is for winding a tow rope. However, the drum 12 can be replaced with a drum around which a chain is wound.

The winch device 10 including one drum 12 has been described so far, but the present invention can also be applied to a winch device including a plurality of drums.
Below, the winch apparatus 60 provided with the some drum is demonstrated. In addition, about the structure similar to the winch apparatus 10, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

As shown in FIG. 5, the winch device 60 includes, in addition to the drum 12, a chain drum 61 around which a scissors chain is wound and a warping drum 62 around which a rope is wound.
The drum 12, the chain drum 61, and the warping drum 62 are rotatably attached to the shaft member 63, and are driven to rotate by a driving force applied from the motor 11 connected to the shaft member 63 via the speed reducer 17.
A drum-side clutch 64 having the same structure as that of the drum-side clutch 14 is fixed to the chain drum 61, and a movable clutch 65 having the same structure as that of the movable clutch 13 is attached to the shaft member 63. The movable clutch 65 is able to transmit the driving force of the motor 11 to the chain drum 61 by moving along the shaft member 63 and being connected to the drum side clutch 64.

A cover body 66 having the same structure as the cover body 39 is fixed to the drum-side clutch 64, and an oil seal 67 having the same shape as the oil seal 30 is attached to the movable clutch 65. The grease supplied to the gap and the space inside the cover body 66 is designed to be prevented from leaking outside.

Similarly to the drum 12, the chain drum 61 also includes an in-cylinder space 68 that stores grease. The in-cylinder space 68 is a space inside the cover body 66 through a through hole 69 formed in the drum-side clutch 64. It is connected with. Therefore, the grease accumulated in the space inside the cover body 66 can flow into the in-body space 68.
The chain drum 61 is formed with a discharge port 70 through which the grease accumulated in the in-cylinder space 68 is discharged, and a plug 71 is attached to the discharge port 70, so that the grease in the in-cylinder space 68 is necessary. It is possible to take it out through the discharge port 70 in response.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, the motor is not limited to a hydraulic motor. Further, instead of providing the polygonal portion on the shaft member, a key may be provided on the shaft member so that the movable clutch and the shaft member rotate integrally.

10: winch device, 11: motor, 12: drum, 13: movable clutch, 14: drum side clutch, 15: small gear, 16: large gear, 17: reduction gear, 18: shaft material, 19: bearing block, 20 : Housing member, 21: Bearing frame, 22: Bearing block, 23, 24: Drum bush, 25: Rotating body, 26: Polygonal part, 27: Rectangular through hole, 28: Circular through hole, 29: Claw mechanism, 30 : Oil seal, 31: Stop ring, 33: Fork, 34: Supply hole, 35: Grease nipple, 36: Claw mechanism, 37: Grease nipple, 38: Supply hole, 39: Cover body, 40: Seal cover, 41: Oil seal, 42: tube material, 43: screw member, 44: attachment, 45: end seal rubber, 46, 47: engagement portion, 48: spring, 49: end seal rubber 49a: Spring, 50: Internal space portion, 51: Through hole, 52: Discharge port, 53: Plug, 54: Air vent, 60: Winch device, 61: Chain drum, 62: Warping drum, 63: Shaft 64: Drum side clutch, 65: Movable clutch, 66: Cover body, 67: Oil seal, 68: Inner space, 69: Through hole, 70: Discharge port, 71: Plug

The present invention relates to a winch device mounted on a ship such as a tugboat.

The tugboat is equipped with a winch device that winds and unwinds a tow chain, winds and unwinds a tow rope, and a specific example is described in Patent Document 1. Patent Document 1 discloses a winch device for a crane mechanism that prevents the boom of the crane mechanism from coming into contact with another ship or the like, which is effective in ensuring safety.

By the way, the winch device transmits the driving force from the motor to the drum via the shaft and the clutch mechanism and rotates the drum, thereby winding and feeding the chain and rope.
If the clutch mechanism employs a dog clutch that has a drum-side block fixed to the drum and a movable block that moves along the sliding portion of the shaft and meshes with the drum-side block, the sliding portion will rust. It is important to prevent

This is because if the sliding portion that guides the movement of the movable block is rusted, a malfunction is caused. In particular, if the movable block is not moved for a long time in a state in which the sliding portion is rusted, the movable block adheres to the sliding portion, which is inconvenient during emergency use.
Seawater contact with the sliding part causes rusting on the sliding part. Applying grease to the sliding part to prevent seawater from directly touching the sliding part will cause rusting on the sliding part. It is effective to suppress.

JP-A-2005-254878

However, grease could fall on the deck, causing a risk for workers to slip their feet. Also, the grease that fell on the deck could lead to marine pollution, so the workers needed to clean the area around the winch device regularly.
This invention is made | formed in view of this situation, and it aims at providing the winch apparatus which suppresses that a grease falls on a deck.

The winch device according to the present invention that meets the above-mentioned object includes a shaft member that is rotated by operation of a motor, a drum that is rotatably attached to the shaft member, one side fixed to the drum, and a first claw on the other side. A drum-side clutch having a mechanism, a second claw mechanism that meshes with the first claw mechanism on one side, and a movable clutch that is attached to the shaft member and rotates integrally with the shaft member. In the winch device that meshes the first and second pawl mechanisms and transmits the driving force of the motor to the drum, the cover body that covers the first and second pawl mechanisms and the other side of the movable clutch A liquid lubricant provided in the gap between the movable clutch and the shaft member and the inner side of the cover member by the cover member and the seal member; Suppresses leaking outside And, further, the said drum is formed in-body space, space and the barrel space of the inside of the cover body are connected by the through-hole.

The winch apparatus which concerns on this invention WHEREIN: It is preferable that the said through-hole is formed in the said drum side clutch.

In the winch device according to the present invention, it is preferable that the drum is formed with a discharge port through which the liquid lubricant accumulated in the in-body space is discharged.

In the winch device according to the present invention, the cover body is preferably provided with an air vent.

In the winch device according to the present invention, the cover body is fixed to the drum side clutch, and is attached to the cylindrical seal cover in which the first and second claw mechanisms are disposed inside, and the seal cover. An annular oil seal A that abuts the outer periphery of the movable clutch, and the oil seal A is provided with an end seal rubber P and an engagement portion at each end to connect the two engagement portions into an annular shape. It is preferable that the end seal rubber P is maintained in a state where one end is joined to the other end by the connection of two engaging portions of the spring S.

In the winch device according to the present invention, the sealing material is formed into an annular shape by connecting an end seal rubber Q in contact with the movable clutch and the shaft member, and engaging portions at both ends, and connecting the two engaging portions. It is preferable that the end seal rubber Q is maintained in a state in which one end is joined to the other end by the connection of the two engaging portions of the spring T. .

According to the winch device of the present invention, the cover body that covers the first and second claw mechanisms and the seal member that closes the gap between the movable clutch and the shaft member on the other side of the movable clutch are provided. Since the liquid lubricant in the gap between the movable clutch and the shaft member and the inside of the cover body is prevented from leaking out by the seal material, it is possible to suppress the grease from falling on the deck.

It is explanatory drawing of the winch apparatus which concerns on one embodiment of this invention. It is an enlarged view explaining the cover body of the winch device. It is explanatory drawing of the oil seal used with the winch apparatus. It is explanatory drawing of the 1st modification of the winch apparatus. It is explanatory drawing of the 2nd modification of the winch apparatus.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, a winch device 10 according to an embodiment of the present invention includes a motor 11, a drum 12 that is driven by a driving force of the motor 11, a movable clutch 13, and a drum side clutch 14. The transmission of the driving force from the motor 11 to the drum 12 is turned on and off using the movable clutch 13 and the drum side clutch 14. Details will be described below.

As shown in FIG. 1, the motor 11 is connected to a reduction gear 17 including a small gear 15 and a large gear 16, and a shaft 18 is fixed to the center of the large gear 16.
The small gear 15 and the large gear 16 are covered with a housing member 20 to which the bearing block 19 is fixed, and are designed to prevent an operator or the like from accidentally contacting.
One side of the shaft member 18 is rotatably supported by a bearing block 19, the drum 12 is rotatably attached to the center, and the other side is rotatably supported by a bearing block 22 attached to a bearing frame 21. Therefore, when the motor 11 is operated, the shaft member 18 rotates together with the small gear 15 and the large gear 16.
In the present embodiment, a hydraulic motor is adopted as the motor 11.

A drum side clutch 14 is rotatably attached to the shaft member 18 via a drum bush 23, and a rotating body 25 is rotatably attached via a drum bush 24.
Since the drum 12 around which the towing rope is wound is fixed to the drum-side clutch 14 and the rotating body 25, the rotational force of the shaft member 18 is not directly applied to the drum 12.

As shown in FIGS. 1 and 2, the shaft member 18 includes a polygonal portion 26 having a polygonal cross section, and the movable clutch 13 corresponds to the polygonal portion 26 as shown in FIG. A rectangular through hole 27 having a polygonal cross section and a circular through hole 28 provided continuously to the square through hole 27 are formed. The movable clutch 13 is attached to the shaft member 18 with the polygonal portion 26 inserted into the rectangular through hole 27 and rotates integrally with the shaft member 18.

The cross section of the polygonal portion 26 is smaller than the cross section of the rectangular through hole 27, and a gap is provided between the polygonal portion 26 and the movable clutch 13. Since this gap is filled with grease, which is an example of a liquid lubricant, the movable clutch 13 can move smoothly along the shaft member 18.
The movable clutch 13 includes a claw mechanism 29 (second claw mechanism) on one side, and an oil seal 30 (oil seal B), which is an example of a seal material, is attached to the other side. The annular oil seal 30 is fixed in the circular through hole 28 and closes the gap between the movable clutch 13 and the shaft member 18, so that the grease in the gap between the movable clutch 13 and the shaft member 18 It is designed not to leak out from the other side.
A stop ring 31 is fixed to the other side of the movable clutch 13 to keep the oil seal 30 fixed in the circular through hole 28.

The movable clutch 13 is provided with a fork 33 for moving along the shaft member 18 and a grease supply hole 34 extending from the outer periphery of the movable clutch 13 to the rectangular through hole 27. A grease nipple 35 is attached to the supply hole 34, and grease is supplied from the grease nipple 35 to the square through hole 27 through the supply hole 34.

As shown in FIGS. 1 and 2, one side (the side far from the movable clutch 13) is fixed to the drum 12, and the pawl mechanism 36 (first side) is disposed on the other side (the side closer to the movable clutch 13). The drum side clutch 14 having a claw mechanism is attached.
The claw mechanism 29 of the movable clutch 13 can be engaged with the claw mechanism 36 of the drum side clutch 14, and the movable clutch 13 moves toward the drum side clutch 14 to engage the claw mechanism 29 with the claw mechanism 36. The driving force of the motor 11 is transmitted to the drum 12 so as to drive and rotate the drum 12.
As shown in FIG. 2, a supply hole 38 to which a grease nipple 37 is attached is formed in the drum side clutch 14, and this supply is between the drum bush 23 attached to the drum side clutch 14 and the shaft member 18. Grease can be lubricated through the holes 38. The drum bush 23 is formed with a groove for guiding the grease that has passed through the supply hole 38 between the drum bush 23 and the shaft member 18.

A cover body 39 that covers the claw mechanisms 29 and 36 is attached to the drum-side clutch 14. The cover body 39 includes a cylindrical seal cover 40 fixed to the drum side clutch 14 and an annular oil seal 41 (oil seal A) that is attached to the seal cover 40 and abuts on the outer periphery of the movable clutch 13.
The seal cover 40 includes a cylindrical member 42 having one flange portion fixed to the drum-side clutch 14 and an annular attachment 44 fixed to the other flange portion of the cylindrical member 42 by a screw member 43. The claw mechanisms 29 and 36 are disposed inside the cylindrical member 42.
The attachment 44 and the cylindrical member 42 fixed to the cylindrical member 42 fix the oil seal 41 in a state where the oil seal 41 is sandwiched, so that the oil seal 41 is not removed by the movement of the movable clutch 13.

The grease supplied to the gap between the movable clutch 13 and the polygonal portion 26 of the shaft member 18 is prevented by the oil seal 30 from leaking from the other side of the movable clutch 13 (the side far from the drum side clutch 14). On the other hand, since the gap between the rectangular through hole 27 and the polygonal portion 26 of the shaft member 18 is not sealed on one side of the movable clutch 13 (the side close to the drum-side clutch 14), the movable clutch 13 and the polygonal portion are not sealed. The grease supplied to the gap 26 flows out from one side of the movable clutch 13. Therefore, the grease flows into the space where the claw mechanisms 29 and 36 are located inside the cover body 39, but the grease that flows into the cover body 39 leaks to the outside of the cover body 39 by the cover body 39. Sealed to prevent it from coming out.
Accordingly, the gap between the movable clutch 13 and the shaft member 18 and the grease inside the cover body 39 are in a state where leakage to the outside is suppressed by the oil seal 30 and the cover body 39.

The oil seal 41 is exposed to an operator's touch by loosening the screw member 43 and removing the attachment 44 from the tubular member 42.
As shown in FIG. 3, the oil seal 41 has an end seal rubber 45 (end seal rubber P) and a spring 48 (spring S) having engaging portions 46 and 47 at both ends, respectively. By connecting the portions 46 and 47, a ring shape is obtained. The spring 48 is attached to the end seal rubber 45 and the engaging portions 46 and 47 are connected to each other, so that one end of the end seal rubber 45 is joined to the other end and the outer periphery of the movable clutch 13 is 360 °. The abutting annular shape is maintained.
When the oil seal 41 is replaced, the oil seal 41 is exposed, the engagement portions 46 and 47 of the spring 48 are disconnected, the oil seal 41 is removed, and both ends of the end seal rubber 45 of the new oil seal 41 are joined. This can be easily performed by connecting the engaging portions 46 and 47 of the spring 48.

The oil seal 30 also has the same configuration as the oil seal 41, and includes an end seal rubber 49 (end seal rubber Q) that contacts the movable clutch 13 and the shaft member 18, and a spring 49a (spring T) that includes engaging portions at both ends. (See FIG. 2).
The spring 49a is formed into an annular shape by connecting the two engaging portions of the spring 49a, and the end seal rubber 49 is maintained in an annular state in which one end and the other end are joined. The end seal rubber 49 has an annular shape with one end joined to the other end, the outer periphery abuts on the circular through hole 28 of the movable clutch 13, and the inner periphery abuts on the shaft member 18.

As the movable block 13 moves toward the drum-side clutch 14 and the claw mechanism 29 meshes with the claw mechanism 36, a space is created between the stop ring 31 and the bearing block 22, and the stop ring 31 is in a removable state. Become. Since the oil seal 30 is exposed by removing the stop ring 31 from the movable block 13, the oil seal 30 can be easily replaced with a new one in the same manner as the oil seal 41.

Further, as shown in FIG. 1, the drum 12 is formed with an in-cylinder space 50 connected to the space inside the cover body 39. A through hole 51 shown in FIGS. 1 and 2 is formed in the drum-side clutch 14, and the space inside the cover body 39 and the in-body space 50 are connected by the through hole 51. Therefore, when grease is supplied from the grease nipple 35 through the supply hole 34, the grease accumulated in the space inside the cover body 39 is sent out from the space inside the cover body 39 and is passed through the through hole 51. Into the in-body space 50.

As shown in FIG. 1, the drum 12 has a discharge port 52 through which the grease accumulated in the in-body space 50 is discharged. A plug 53 is attached to the discharge port 52, so the plug 53 is removed. Thus, it is possible to discharge the grease accumulated in the in-body space 50.
Further, a part of the grease supplied to the drum bush 23 inside the drum side clutch 14 through the grease nipple 37 and the supply hole 38 flows into the cylinder space 50 through the gap between the drum bush 23 and the shaft member 18. To do. In addition, the grease supplied to the drum bush 23 is designed to flow into the space inside the cover body 39. The grease that has flowed into the inner space of the cover body 39 is also prevented from leaking outside by the cover body 39.

In the present embodiment, no air vent is formed in the cover body 39, but it is also possible to form an air vent 54 in the cover body 39 as shown in FIG. 4. When the air vent 54 is formed, the operation of feeding the grease into the gap between the movable clutch 13 and the shaft member 18 through the grease nipple 35 and the supply hole 34 becomes easy, and the operation of supplying the grease is completed. Can be visually confirmed. Specifically, it is possible to know the end of the grease supply operation by using the grease flowing out from the air vent 54.
In this embodiment, a manual extrusion pump is used for supplying grease.
In addition, the drum 12 is is for winding the tow rope, a drum 12, can be replaced with drums chain is wound for anchor.

The winch device 10 including one drum 12 has been described so far, but the present invention can also be applied to a winch device including a plurality of drums.
Below, the winch apparatus 60 provided with the some drum is demonstrated. In addition, about the structure similar to the winch apparatus 10, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

As shown in FIG. 5, the winch device 60 includes, in addition to the drum 12, a chain drum 61 around which a scissors chain is wound and a warping drum 62 around which a rope is wound.
The drum 12, the chain drum 61, and the warping drum 62 are rotatably attached to the shaft member 63, and are driven to rotate by a driving force applied from the motor 11 connected to the shaft member 63 via the speed reducer 17.
A drum-side clutch 64 having the same structure as that of the drum-side clutch 14 is fixed to the chain drum 61, and a movable clutch 65 having the same structure as that of the movable clutch 13 is attached to the shaft member 63. The movable clutch 65 is able to transmit the driving force of the motor 11 to the chain drum 61 by moving along the shaft member 63 and being connected to the drum side clutch 64.

A cover body 66 having the same structure as the cover body 39 is fixed to the drum-side clutch 64, and an oil seal 67 having the same shape as the oil seal 30 is attached to the movable clutch 65. The grease supplied to the gap and the space inside the cover body 66 is designed to be prevented from leaking outside.

Similarly to the drum 12, the chain drum 61 also includes an in-cylinder space 68 that stores grease. The in-cylinder space 68 is a space inside the cover body 66 through a through hole 69 formed in the drum-side clutch 64. It is connected with. Therefore, the grease accumulated in the space inside the cover body 66 can flow into the in-body space 68.
The chain drum 61 is formed with a discharge port 70 through which the grease accumulated in the in-cylinder space 68 is discharged, and a plug 71 is attached to the discharge port 70, so that the grease in the in-cylinder space 68 is necessary. It is possible to take it out through the discharge port 70 in response.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, the motor is not limited to a hydraulic motor. Further, instead of providing the polygonal portion on the shaft member, a key may be provided on the shaft member so that the movable clutch and the shaft member rotate integrally.

10: winch device, 11: motor, 12: drum, 13: movable clutch, 14: drum side clutch, 15: small gear, 16: large gear, 17: reduction gear, 18: shaft material, 19: bearing block, 20 : Housing member, 21: Bearing frame, 22: Bearing block, 23, 24: Drum bush, 25: Rotating body, 26: Polygonal part, 27: Rectangular through hole, 28: Circular through hole, 29: Claw mechanism, 30 : Oil seal, 31: Stop ring, 33: Fork, 34: Supply hole, 35: Grease nipple, 36: Claw mechanism, 37: Grease nipple, 38: Supply hole, 39: Cover body, 40: Seal cover, 41: Oil seal, 42: tube material, 43: screw member, 44: attachment, 45: end seal rubber, 46, 47: engagement portion, 48: spring, 49: end seal rubber 49a: Spring, 50: Body space part, 51: Through hole, 52: Discharge port, 53: Plug, 54: Air vent, 60: Winch device, 61: Chain drum, 62: Warping drum, 63: Shaft 64: Drum side clutch, 65: Movable clutch, 66: Cover body, 67: Oil seal, 68: Inner space, 69: Through hole, 70: Discharge port, 71: Plug

The present invention relates to a winch device mounted on a ship such as a tugboat.

The tugboat is equipped with a winch device that winds and unwinds a tow chain, winds and unwinds a tow rope, and a specific example is described in Patent Document 1. Patent Document 1 discloses a winch device for a crane mechanism that prevents the boom of the crane mechanism from coming into contact with another ship or the like, which is effective in ensuring safety.

By the way, the winch device transmits the driving force from the motor to the drum via the shaft and the clutch mechanism and rotates the drum, thereby winding and feeding the chain and rope.
If the clutch mechanism employs a dog clutch that has a drum-side block fixed to the drum and a movable block that moves along the sliding portion of the shaft and meshes with the drum-side block, the sliding portion will rust. It is important to prevent

This is because if the sliding portion that guides the movement of the movable block is rusted, a malfunction is caused. In particular, if the movable block is not moved for a long time in a state in which the sliding portion is rusted, the movable block adheres to the sliding portion, which is inconvenient during emergency use.
Seawater contact with the sliding part causes rusting on the sliding part. Applying grease to the sliding part to prevent seawater from directly touching the sliding part will cause rusting on the sliding part. It is effective to suppress.

JP-A-2005-254878

However, grease could fall on the deck, causing a risk for workers to slip their feet. Also, the grease that fell on the deck could lead to marine pollution, so the workers needed to clean the area around the winch device regularly.
This invention is made | formed in view of this situation, and it aims at providing the winch apparatus which suppresses that a grease falls on a deck.

The winch device according to the present invention that meets the above-mentioned object includes a shaft member that is rotated by operation of a motor, a drum that is rotatably attached to the shaft member, one side fixed to the drum, and a first claw on the other side. A drum-side clutch having a mechanism and a second pawl mechanism that meshes with the first pawl mechanism on one side, and is attached to a polygonal portion of the shaft member and rotates integrally with the shaft member A winch device comprising a clutch and transmitting the driving force of the motor to the drum by engaging the first and second pawl mechanisms;
The first, a cover for covering the second pawl mechanism, a seal member for closing the gap between the shaft member and the movable clutch is provided on the other side of the movable clutch, moreover the movable clutch, the multi A grease supply hole reaching from the outer periphery is provided in the square through hole into which the square part is fitted, and a grease nipple is attached to the supply hole,
The cover body and the seal material prevent the grease in the gap between the movable clutch and the shaft material and the inside of the cover body from leaking outside, and the drum has an in-cylinder space portion. The inner space of the cover body and the in-body space are connected by a through-hole through which the grease accumulated in the cover body can flow .

The winch apparatus which concerns on this invention WHEREIN: It is preferable that the said through-hole is formed in the said drum side clutch.

In the winch device according to the present invention, it is preferable that the drum is formed with a discharge port through which the grease accumulated in the in-body space is discharged.

In the winch device according to the present invention, the cover body is fixed to the drum side clutch, and is attached to the cylindrical seal cover in which the first and second claw mechanisms are disposed inside, and the seal cover. An annular oil seal A that abuts the outer periphery of the movable clutch, and the oil seal A is provided with an end seal rubber P and an engagement portion at each end to connect the two engagement portions into an annular shape. It is preferable that the end seal rubber P is maintained in a state where one end is joined to the other end by the connection of two engaging portions of the spring S.

In the winch device according to the present invention, the sealing material is formed into an annular shape by connecting an end seal rubber Q in contact with the movable clutch and the shaft member, and engaging portions at both ends, and connecting the two engaging portions. It is preferable that the end seal rubber Q is maintained in a state in which one end is joined to the other end by the connection of the two engaging portions of the spring T. .

According to the winch device of the present invention, the cover body that covers the first and second claw mechanisms and the seal member that closes the gap between the movable clutch and the shaft member on the other side of the movable clutch are provided. Since the seal material prevents the grease in the gap between the movable clutch and the shaft material and the inside of the cover body from leaking out, the grease can be prevented from falling on the deck.

It is explanatory drawing of the winch apparatus which concerns on one embodiment of this invention. It is an enlarged view explaining the cover body of the winch device. It is explanatory drawing of the oil seal used with the winch apparatus. It is explanatory drawing of the modification of the winch apparatus.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, a winch device 10 according to an embodiment of the present invention includes a motor 11, a drum 12 that is driven by a driving force of the motor 11, a movable clutch 13, and a drum side clutch 14. The transmission of the driving force from the motor 11 to the drum 12 is turned on and off using the movable clutch 13 and the drum side clutch 14. Details will be described below.

As shown in FIG. 1, the motor 11 is connected to a reduction gear 17 including a small gear 15 and a large gear 16, and a shaft 18 is fixed to the center of the large gear 16.
The small gear 15 and the large gear 16 are covered with a housing member 20 to which the bearing block 19 is fixed, and are designed to prevent an operator or the like from accidentally contacting.
One side of the shaft member 18 is rotatably supported by a bearing block 19, the drum 12 is rotatably attached to the center, and the other side is rotatably supported by a bearing block 22 attached to a bearing frame 21. Therefore, when the motor 11 is operated, the shaft member 18 rotates together with the small gear 15 and the large gear 16.
In the present embodiment, a hydraulic motor is adopted as the motor 11.

A drum side clutch 14 is rotatably attached to the shaft member 18 via a drum bush 23, and a rotating body 25 is rotatably attached via a drum bush 24.
Since the drum 12 around which the towing rope is wound is fixed to the drum-side clutch 14 and the rotating body 25, the rotational force of the shaft member 18 is not directly applied to the drum 12.

As shown in FIGS. 1 and 2, the shaft member 18 includes a polygonal portion 26 having a polygonal cross section, and the movable clutch 13 corresponds to the polygonal portion 26 as shown in FIG. A rectangular through hole 27 having a polygonal cross section and a circular through hole 28 provided continuously to the square through hole 27 are formed. The movable clutch 13 is attached to the shaft member 18 with the polygonal portion 26 inserted into the rectangular through hole 27 and rotates integrally with the shaft member 18.

The cross section of the polygonal portion 26 is smaller than the cross section of the rectangular through hole 27, and a gap is provided between the polygonal portion 26 and the movable clutch 13. Since grayed squirrel in the gap is filled, the movable clutch 13 can be smoothly moved along the Jikuzai 18.
The movable clutch 13 includes a claw mechanism 29 (second claw mechanism) on one side, and an oil seal 30 (oil seal B), which is an example of a seal material, is attached to the other side. The annular oil seal 30 is fixed in the circular through hole 28 and closes the gap between the movable clutch 13 and the shaft member 18, so that the grease in the gap between the movable clutch 13 and the shaft member 18 It is designed not to leak out from the other side.
A stop ring 31 is fixed to the other side of the movable clutch 13 to keep the oil seal 30 fixed in the circular through hole 28.

The movable clutch 13 is provided with a fork 33 for moving along the shaft member 18 and a grease supply hole 34 extending from the outer periphery of the movable clutch 13 to the rectangular through hole 27. A grease nipple 35 is attached to the supply hole 34, and grease is supplied from the grease nipple 35 to the square through hole 27 through the supply hole 34.

As shown in FIGS. 1 and 2, one side (the side far from the movable clutch 13) is fixed to the drum 12, and the pawl mechanism 36 (first side) is disposed on the other side (the side closer to the movable clutch 13). The drum side clutch 14 having a claw mechanism is attached.
The claw mechanism 29 of the movable clutch 13 can be engaged with the claw mechanism 36 of the drum side clutch 14, and the movable clutch 13 moves toward the drum side clutch 14 to engage the claw mechanism 29 with the claw mechanism 36. The driving force of the motor 11 is transmitted to the drum 12 so as to drive and rotate the drum 12.
As shown in FIG. 2, a supply hole 38 to which a grease nipple 37 is attached is formed in the drum side clutch 14, and this supply is between the drum bush 23 attached to the drum side clutch 14 and the shaft member 18. Grease can be lubricated through the holes 38. The drum bush 23 is formed with a groove for guiding the grease that has passed through the supply hole 38 between the drum bush 23 and the shaft member 18.

A cover body 39 that covers the claw mechanisms 29 and 36 is attached to the drum-side clutch 14. The cover body 39 includes a cylindrical seal cover 40 fixed to the drum side clutch 14 and an annular oil seal 41 (oil seal A) that is attached to the seal cover 40 and abuts on the outer periphery of the movable clutch 13.
The seal cover 40 includes a cylindrical member 42 having one flange portion fixed to the drum-side clutch 14 and an annular attachment 44 fixed to the other flange portion of the cylindrical member 42 by a screw member 43. The claw mechanisms 29 and 36 are disposed inside the cylindrical member 42.
The attachment 44 and the cylindrical member 42 fixed to the cylindrical member 42 fix the oil seal 41 in a state where the oil seal 41 is sandwiched, so that the oil seal 41 is not removed by the movement of the movable clutch 13.

The grease supplied to the gap between the movable clutch 13 and the polygonal portion 26 of the shaft member 18 is prevented by the oil seal 30 from leaking from the other side of the movable clutch 13 (the side far from the drum side clutch 14). On the other hand, since the gap between the rectangular through hole 27 and the polygonal portion 26 of the shaft member 18 is not sealed on one side of the movable clutch 13 (the side close to the drum-side clutch 14), the movable clutch 13 and the polygonal portion are not sealed. The grease supplied to the gap 26 flows out from one side of the movable clutch 13. Therefore, the grease flows into the space where the claw mechanisms 29 and 36 are located inside the cover body 39, but the grease that flows into the cover body 39 leaks to the outside of the cover body 39 by the cover body 39. Sealed to prevent it from coming out.
Accordingly, the gap between the movable clutch 13 and the shaft member 18 and the grease inside the cover body 39 are in a state where leakage to the outside is suppressed by the oil seal 30 and the cover body 39.

The oil seal 41 is exposed to an operator's touch by loosening the screw member 43 and removing the attachment 44 from the tubular member 42.
As shown in FIG. 3, the oil seal 41 has an end seal rubber 45 (end seal rubber P) and a spring 48 (spring S) having engaging portions 46 and 47 at both ends, respectively. By connecting the portions 46 and 47, a ring shape is obtained. The spring 48 is attached to the end seal rubber 45 and the engaging portions 46 and 47 are connected to each other, so that one end of the end seal rubber 45 is joined to the other end and the outer periphery of the movable clutch 13 is 360 °. The abutting annular shape is maintained.
When the oil seal 41 is replaced, the oil seal 41 is exposed, the engagement portions 46 and 47 of the spring 48 are disconnected, the oil seal 41 is removed, and both ends of the end seal rubber 45 of the new oil seal 41 are joined. This can be easily performed by connecting the engaging portions 46 and 47 of the spring 48.

The oil seal 30 also has the same configuration as the oil seal 41, and includes an end seal rubber 49 (end seal rubber Q) that contacts the movable clutch 13 and the shaft member 18, and a spring 49a (spring T) that includes engaging portions at both ends. (See FIG. 2).
The spring 49a is formed into an annular shape by connecting the two engaging portions of the spring 49a, and the end seal rubber 49 is maintained in an annular state in which one end and the other end are joined. The end seal rubber 49 has an annular shape with one end joined to the other end, the outer periphery abuts on the circular through hole 28 of the movable clutch 13, and the inner periphery abuts on the shaft member 18.

As the movable block 13 moves toward the drum-side clutch 14 and the claw mechanism 29 meshes with the claw mechanism 36, a space is created between the stop ring 31 and the bearing block 22, and the stop ring 31 is in a removable state. Become. Since the oil seal 30 is exposed by removing the stop ring 31 from the movable block 13, the oil seal 30 can be easily replaced with a new one in the same manner as the oil seal 41.

Further, as shown in FIG. 1, the drum 12 is formed with an in-cylinder space 50 connected to the space inside the cover body 39. A through hole 51 shown in FIGS. 1 and 2 is formed in the drum-side clutch 14, and the space inside the cover body 39 and the in-body space 50 are connected by the through hole 51. Therefore, when grease is supplied from the grease nipple 35 through the supply hole 34, the grease accumulated in the space inside the cover body 39 is sent out from the space inside the cover body 39 and is passed through the through hole 51. Into the in-body space 50.

As shown in FIG. 1, the drum 12 has a discharge port 52 through which the grease accumulated in the in-body space 50 is discharged. A plug 53 is attached to the discharge port 52, so the plug 53 is removed. Thus, it is possible to discharge the grease accumulated in the in-body space 50.
Further, a part of the grease supplied to the drum bush 23 inside the drum side clutch 14 through the grease nipple 37 and the supply hole 38 flows into the cylinder space 50 through the gap between the drum bush 23 and the shaft member 18. To do. In addition, the grease supplied to the drum bush 23 is designed to flow into the space inside the cover body 39. The grease that has flowed into the inner space of the cover body 39 is also prevented from leaking outside by the cover body 39.

In this embodiment, a manual extrusion pump is used for supplying grease.
The drum 12 is for winding a tow rope, but the drum 12 can be replaced with a drum around which a tow chain is wound.

The winch device 10 including one drum 12 has been described so far, but the present invention can also be applied to a winch device including a plurality of drums.
Below, the winch apparatus 60 provided with the some drum is demonstrated. In addition, about the structure similar to the winch apparatus 10, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

As shown in FIG. 4 , the winch device 60 includes a drum 12, a chain drum 61 around which a bag chain is wound, and a warping drum 62 around which a rope is wound.
The drum 12, the chain drum 61, and the warping drum 62 are rotatably attached to the shaft member 63, and are driven to rotate by a driving force applied from the motor 11 connected to the shaft member 63 via the speed reducer 17.
A drum-side clutch 64 having the same structure as that of the drum-side clutch 14 is fixed to the chain drum 61, and a movable clutch 65 having the same structure as that of the movable clutch 13 is attached to the shaft member 63. The movable clutch 65 is able to transmit the driving force of the motor 11 to the chain drum 61 by moving along the shaft member 63 and being connected to the drum side clutch 64.

A cover body 66 having the same structure as the cover body 39 is fixed to the drum-side clutch 64, and an oil seal 67 having the same shape as the oil seal 30 is attached to the movable clutch 65. The grease supplied to the gap and the space inside the cover body 66 is designed to be prevented from leaking outside.

Similarly to the drum 12, the chain drum 61 also includes an in-cylinder space 68 that stores grease. The in-cylinder space 68 is a space inside the cover body 66 through a through hole 69 formed in the drum-side clutch 64. It is connected with. Therefore, the grease accumulated in the space inside the cover body 66 can flow into the in-body space 68.
The chain drum 61 is formed with a discharge port 70 through which the grease accumulated in the in-cylinder space 68 is discharged, and a plug 71 is attached to the discharge port 70, so that the grease in the in-cylinder space 68 is necessary. It is possible to take it out through the discharge port 70 in response.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, the motor is not limited to a hydraulic motor.

10: winch device, 11: motor, 12: drum, 13: movable clutch, 14: drum side clutch, 15: small gear, 16: large gear, 17: reduction gear, 18: shaft material, 19: bearing block, 20 : Housing member, 21: Bearing frame, 22: Bearing block, 23, 24: Drum bush, 25: Rotating body, 26: Polygonal part, 27: Rectangular through hole, 28: Circular through hole, 29: Claw mechanism, 30 : Oil seal, 31: Stop ring, 33: Fork, 34: Supply hole, 35: Grease nipple, 36: Claw mechanism, 37: Grease nipple, 38: Supply hole, 39: Cover body, 40: Seal cover, 41: Oil seal, 42: tube material, 43: screw member, 44: attachment, 45: end seal rubber, 46, 47: engagement portion, 48: spring, 49: end seal rubber 49a: spring, 50: body space, 51: through hole, 52: discharge port, 53: plug, 60: winch device, 61: chain drum, 62: warping drum, 63: shaft material, 64: drum side clutch , 65: movable clutch, 66: cover body, 67: oil seal, 68: space part in the trunk, 69: through hole, 70: discharge port, 71: plug

Claims (7)

A shaft that rotates by operation of a motor, a drum that is rotatably attached to the shaft, a drum-side clutch that has one side fixed to the drum and has a first pawl mechanism on the other side, and A second claw mechanism that meshes with the first claw mechanism, and a movable clutch that is attached to the shaft member and rotates integrally with the shaft member, and bites the first and second claw mechanisms; In addition, in the winch mechanism that transmits the driving force of the motor to the drum,
A cover body that covers the first and second claw mechanisms, and a seal material that closes a gap between the movable clutch and the shaft member on the other side of the movable clutch are provided, and by the cover body and the seal material, A winch device that suppresses leakage of a liquid lubricant in a gap between the movable clutch and the shaft member and an inner side of the cover body. 2. The winch device according to claim 1, wherein an inner cylinder space is formed on the drum, and the inner space of the cover body and the inner space are connected by a through hole. 3. The winch device according to claim 2, wherein the through hole is formed in the drum side clutch. 4. The winch device according to claim 2, wherein the drum is formed with a discharge port through which the liquid lubricant accumulated in the in-body space is discharged. The winch apparatus of any one of Claims 1-4 WHEREIN: The air vent is provided in the said cover body, The winch apparatus characterized by the above-mentioned. The winch device according to any one of claims 1 to 5, wherein the cover body is fixed to the drum side clutch, and the cylindrical seal cover in which the first and second claw mechanisms are disposed inside. And an annular oil seal A that is attached to the seal cover and abuts the outer periphery of the movable clutch. The oil seal A has an end seal rubber P and engaging portions at both ends, respectively. A spring S that is annular by connecting the joints, and the end seal rubber P is maintained in a state where one end is joined to the other end by the connection of the two engaging parts of the spring S. Winch device characterized by. The winch device according to any one of claims 1 to 6, wherein the seal material includes an end seal rubber Q that comes into contact with the movable clutch and the shaft member, and engaging portions at both ends, respectively. An annular oil seal B having a spring T that is formed into an annular shape by connecting joint portions, and the end seal rubber Q is joined at one end to the other end by connecting two engaging portions of the spring T. A winch device, characterized in that the winch device is maintained.

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