JP5714163B1 - Winch equipment - Google Patents

Abstract

A winch device for properly supplying grease to the inside of the device and preventing the grease from falling on a deck is provided. A main shaft 15 connected to a rotational drive source, a drum 80 rotatably provided on the main shaft 15 via first and second fixed boss members 85, 86, and an angular axis slide of the main shaft 15. A sliding boss comprising a sliding tooth portion 92 that is slidably mounted on the portion 94 via a square hole 95 and that engages with a fixed tooth portion 91 provided on one side of the first fixed boss member 85 on the other side. In the winch device having the member 93, the processing space formed at the corner of the square hole 95 is covered with the seal member 121 on one side and the cover material 125 on the other side to prevent easy leakage of grease. [Selection] Figure 2

Description

The present invention relates to a winch device that can be mounted on a ship or used on land.

A ship such as a 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.

Moreover, since the same winch apparatus 10 is proposed also in patent document 2, this is shown to FIG. 7, FIG. 8 (A). The winch device 10 transmits the rotational driving force from the hydraulic motor 11 to the main shaft 15 via a gear mechanism including a small gear 12 and a large gear 13.
The main shaft 15 is rotatably supported by a bearing member 17 provided on the upper or middle portion of the plurality of leg members 16. The leg member 16 to which the hydraulic motor 11 is attached also serves as a gear case cover case. The bearing member 17 includes a bearing housing 18 and a bush 19 (or a bearing) disposed therein, so that grease or the like can be supplied from a grease nipple or the like provided in the bearing housing 18.

At a predetermined position of the main shaft 15, a rope drum 20 and a chain drum 21 are rotatably provided on both sides via first fixed boss members 22 and 23 and second fixed boss members 24 and 25, respectively. The rope drum 20 and the chain drum 21 may be plural.
A fixed tooth portion 27 is provided on one side of the first fixed boss members 22 and 23 (in the direction of arrow A in FIG. 8), and the angular shaft slide having a substantially square cross section formed at a specific position of the main shaft 15. The main shaft 15 engages with the rope drum 20 and the chain drum 21 by meshing with a sliding tooth portion 32 provided on the other side (in the direction of arrow B in FIG. 8) of the sliding boss member 30 slidably fitted into the portion 28. It is designed to transmit rotational power. By moving the clutch levers 33 and 34, the sliding boss member 30 is moved, and the clutch mechanisms 35 and 36 having the sliding tooth portion 32 and the fixed tooth portion 27 are turned on and off. It has become.

The periphery of the fixed tooth portion 27 and the sliding tooth portion 32 and the gap between the angular shaft sliding portion 28 and the boss hole 37 of the sliding boss member 30 are always filled with grease. If this grease flows out easily, it may cause marine pollution. Therefore, a seal member (for example, an oil seal) 38 is provided on one side of the sliding boss member 30, and the periphery of the sliding tooth portion 32 and the fixed tooth portion 27. Is provided with a cover cover 39, and through holes 40 are provided in the first fixed boss members 22, 23, and excessively filled grease or the like is a sealed space portion 42 between the drum portion 41 of the drums 20, 21 and the main shaft 15. It has a structure that accumulates.
Note that the grease supplied to the bearings of the second fixed boss members 24 and 25 also flows into the sealed space portion 42.

JP-A-2005-254878 Japanese Patent No. 5181071

However, in the winch device 10 described in Patent Document 2, as shown in FIG. 8B, the angular slidable portion 28 having a substantially square cross section is provided inside the boss hole 37 having a substantially square cross section. Since it is difficult to accurately form the four surfaces 43 to 46 that are in contact with each other, the machining space portions 51 to 54 that are sufficiently larger than the corner portions (arc portions) 47 to 50 of the angular axis sliding portion 28 having a substantially square cross section are formed. The four sides 43 to 46 are machined. Further, an annular grease groove 57 is generally provided at the bottom of the grease injection hole 56, and the filling path of the grease injected from the grease injection hole 56 is expanded on the circumference.

However, the gap between the angular axis sliding portion 28 (four surrounding surfaces) and the four surfaces 43 to 46 of the boss hole 37 is small, the resistance to grease is large, and the grease that has passed through the grease groove 57 is processed space. Since the grease flow resistance of the portions 51 to 54 is small, there is a problem that the grease does not sufficiently flow into the sliding portion through only the machining space portions 51 to 54.
Moreover, in the technique of patent document 2, although excess grease is collected in the sealed space part 42 between the trunk | drum 41 and the main axis | shaft 15, since the sealed space part 42 is large in volume, if it fills, There was a problem that a large amount of grease entered and it was not easy to determine how much grease was added.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a winch device in which grease is properly supplied into the device and is prevented from falling on the deck.

The winch device according to the present invention that meets the above-mentioned object is provided by: 1) a main shaft supported by a plurality of bearing members and connected to a rotational drive source; 2) a first fixed boss member having a fixed tooth portion on one side; A drum that is rotatably provided on the main shaft by a second fixed boss member; and 3) a square hole that is slidably fitted into an angular shaft sliding portion having a square cross section formed at a specific position of the main shaft. A clutch boss member having a sliding tooth portion meshing with the fixed tooth portion on the other side, wherein the fixed tooth portion and the sliding tooth portion rotate the drum. Further, the sliding boss member has a grease injection hole and an annular grease groove connected to the grease injection hole, and a machining space portion communicating with the annular grease groove is axially provided at a corner portion of the square hole. In the winch device formed in
One side of the sliding boss member is provided with a seal member that is in contact with and slides on the main shaft having a circular cross section on one side of the angular shaft sliding portion. A cover material that covers the processing space is provided on the side.

Further, in the winch device according to the present invention, when the cover material becomes an annular shape and simultaneously closes the plurality of processing space portions, when the cover material is divided in the circumferential direction, or when the cover material is There may be a case where it is provided for each processing space. The cover material may be plate-shaped or three-dimensional (for example, plug-shaped).

In the winch device according to the present invention, the drum is a rope drum having a body portion and side plates A and B provided on both sides of the body portion, and the side plate A on one side is the first fixed boss member. The other side plate B may be rotatably attached to the main shaft via the second fixed boss member.

In the winch device according to the present invention, the drum is a chain drum, and one side of the chain drum main body is provided via the first fixed boss member, and the other side is provided via the second fixed boss member. The main shaft may be rotatably connected.
The drum is a chain drum, and the chain drum main body, the bearing housing of the first fixed boss member, and the bearing housing of the second fixed boss member are integrated into the interior. It can also be rotatably attached to the main shaft via a bearing.

In the winch device of the present invention, a small-diameter cylindrical body having a gap with the main shaft is provided on the inner side of the cylindrical body forming the trunk portion, and injected into the bearings of the first and second fixed boss members. It is preferable that the grease is configured to flow into a space formed between the main shaft and the small-diameter cylindrical body through the grease inflow passage.
In the winch device of the present invention, a small-diameter cylindrical body is provided inside the chain drum main body and outside the main shaft so as to be aligned with the main shaft, and the first and second fixed boss members. The grease injected into the bearing can also flow into a space formed between the main shaft and the small-diameter cylindrical body through the grease inflow path.

In the winch device according to the present invention, a seal member that abuts and slides on a main shaft having a circular cross section (including a stainless steel pipe having a circular cross section that is shrink-fitted on the main shaft) is provided on one side of the sliding boss member. In addition, since the cover material covering the processing space is provided on the other side of the sliding boss member, the processing space is temporarily closed, and back pressure is applied to the grease flowing through the processing space, and the angular axis sliding portion More grease is filled between the two and the square holes, grease lubrication is promoted, and the life of the apparatus can be extended.

In the winch device according to the present invention, when the cover material has an annular shape and simultaneously closes a plurality of processing space portions, the structure of the cover material is simplified and the attachment is facilitated.
When the cover material is divided in the circumferential direction (for example, divided in half and divided into four), attachment and removal are easy.

In the winch device according to the present invention, a small-diameter cylindrical body having a gap (for example, 2 to 10 mm) between the main shaft is provided inside the cylindrical body forming the trunk portion, and the injected grease is a small-diameter cylindrical body. When the space A formed between the main shaft and the space A is filled, the space A is much smaller in volume than the space B formed between the cylinder and the main shaft. The winch apparatus can also be used in the filled state.

It is a front sectional view of the winch device concerning a 1st embodiment of the present invention. It is the elements on larger scale of the winch device. FIG. 3A is an enlarged cross-sectional view taken along the line P-P ′ in FIG. 2, and FIG. 3B is an enlarged cross-sectional view taken along the line Q-Q ′ in FIG. 2. (A) is a side view around a cover material indicated by an arrow S-S ′ in FIG. 2, and (B) is a side view of a cover material according to a modification. It is a front sectional view of the winch device concerning a 2nd embodiment of the present invention. It is the elements on larger scale of the winch device. It is a front sectional view of a winch device according to a conventional example. (A) is the elements on larger scale, (B) is K-K 'sectional drawing.

Next, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol may be used for the component same as the winch apparatus 10 which concerns on the prior art example shown in FIG. 7, FIG.

As shown in FIGS. 1 and 2, the winch device 60 according to the first embodiment of the present invention is erected on a base gantry 60a that is finally fixed to a deck of a ship and the base gantry 60a. Leg members 61 to 64 and a main shaft 15 that is rotatably supported via bearing members 65 to 68 mounted on the leg members 61 to 64, respectively. The bearing members 65 to 68 include bearing housings 69 to 72 fixed to the leg members 61 to 64 and bearings (for example, metal bushes) 73 to 76 attached to the inside of the bearing housings 69 to 72, respectively. Grease nipples 78 are respectively provided in the grease injection holes 77 so that the grease can be supplied between the bearings 73 to 76 and the main shaft 15.

A large gear 13 is fixed to the other side of the main shaft 15 (in the direction of arrow B in FIG. 1), and the large gear 13 is an example of a rotational drive source attached to a part of a leg member 64 that also serves as a gear casing. The main shaft 15 is engaged with a small gear 12 provided on the output shaft of the hydraulic motor 11 so that the main shaft 15 can be rotated forward or reverse. The main shaft 15 has a rope drum (an example of a drum) 80 for winding and unwinding a rope, and two chain drums (an example of a drum) 81 and 82 for lifting or lowering a rod or the like at predetermined positions. Is provided.

As shown in FIGS. 1 and 2, the rope drum 80 has side plate members (side plates A and B) 83 and 84 on the left and right sides and a body portion 41 for connecting them, and the left and right side plate members 83 and 84 are respectively The first and second fixed boss members 85 and 86 are provided on the shaft center side, and are rotatably attached to predetermined positions of the main shaft 15 via the first and second fixed boss members 85 and 86. . The first and second fixed boss members 85 and 86 have a cylindrical shape, and a grease nipple 88 is provided in each grease injection hole 87 so that grease can be supplied to the bearings 89 and 90. Further, a fixed tooth portion 91 constituting a part of the clutch means 96 is provided on one side of the first fixed boss member 85 (in the direction of arrow A in FIG. 1). In this embodiment, the bearings 89 and 90 are made of metal bushes, and one side and the other side are prevented from coming off by stopper fittings 89a and 90a, respectively, so that the bearings 89 and 90 do not move.

Further, a sliding boss member 93 having a sliding tooth portion 92 facing the fixed tooth portion 91 on the other side is attached to the main shaft 15, and the sliding boss member 93 is formed at a specific position of the main shaft 15. In addition, a square hole 95 is provided in which the square shaft sliding portion 94 is fitted and slidably moved. The clutch tooth 96 is constituted by the fixed tooth portion 91 and the sliding tooth portion 92, and the clutch lever 96 can be turned on and off by moving the clutch lever 97 in the axial direction, so that the rope drum 80 can be rotated and not rotated. Can be controlled. In FIG. 2, the distance d indicates the movable distance of the sliding boss member 93.

As shown in FIG. 3 (B), the rectangular shaft sliding portion 94 provided on the main shaft 15 is formed by processing a cylindrical material 98 indicated by a two-dot chain line and a solid line to form four surfaces 100 to 103. The cross section of the shaft sliding portion 94 has a square shape with rounded corners, but the four corners are arc portions 105 to 108 having a circular arc shape, leaving a part of the columnar material 98.
On the other hand, the sliding boss member 93 having the square holes 95 having the four sliding surfaces 109 to 112 that slide and move in contact with the four surfaces 100 to 103 of the angular shaft sliding portion 94 is formed on the inner four corners of the square hole 95. Are provided with machining space portions 113 to 116 formed in the axial direction. The machining space portions 113 to 116 are located radially outside the arc portions 105 to 108, and the sliding boss member 93 is not in contact with the arc portions 105 to 108.

The reason why the machining spaces 113 to 116 are provided is that, as described above, it is difficult to machine the four corners of the square hole 95 along the arc portions 105 to 108 with substantially the same dimensions, and the sliding surfaces 109 to This is to form a clearance space such as a blade for processing 112 accurately.

As shown in FIG. 3A, the sliding boss member 93 includes two opposing grease injection holes 118 that supply grease between the angular shaft sliding portion 94 and the square hole 95, and the grease injection hole 118. An annular grease groove 119 is provided at the inner end in the radial direction. The annular grease groove 119 has a groove bottom 120 larger than the radius of the arc portions 105 to 108.

As shown in FIG. 2, on one side of the sliding boss member 93, one side of the angular shaft sliding portion 94 is formed in a cylindrical shape so that the injected grease does not leak in the axial direction, and a sealing member (for example, oil Seal) 121 is provided. The main shaft 15 at the portion where the seal member 121 is mounted has a circular cross section, and a stainless pipe 122 is shrink-fitted in a portion where the seal member 121 directly contacts and slides. Thereby, seawater or the like to enter from the seal member 121 is blocked, and the outflow of grease from the inside is prevented. Reference numeral 123 denotes a seal presser, which is fixed to the sliding boss member 93 with a screw to prevent the seal member 121 from falling off.

On the other hand, as shown in FIG. 4A, the processing space portions 113 to 116 are formed at the outlet of the square hole 95 (outside of the angular shaft sliding portion 94) on the other radial inner side of the sliding boss member 93. An annular cover material (for example, a scraper plate) 125 that covers the other side is provided. The cover material 125 is made of a soft metal plate such as a rubber plate, a plastic plate, or a gun metal. The inside of the cover material 125 has a circular hole 126 that is larger than the radius of curvature of the arc portions 105 to 108, and a plurality of screw holes 127 are provided on the outer side in the radial direction. It is fixed. In addition, this cover material may be divided into two in the circumferential direction (indicated by an alternate long and short dash line k in FIG. 4A) or four, and attachment and removal are facilitated by dividing.

Even if the sliding boss member 93 moves, the inside of the cover member 125 is always close to or in contact with the angular shaft sliding portion 94 to prevent easy flow of grease, that is, increase the passage resistance of grease. ing. Thus, since the seal member 121 is disposed on one side of the sliding boss member 93 and the cover member 125 is provided on the other side, the grease that has passed through the annular grease groove 119 passes through the machining space portions 113 to 116. Leakage is prevented easily, and the sliding surfaces (surfaces 100 to 103) of the angular shaft sliding portion 94 in a wider range are filled with grease by the movement of the sliding boss member 93.

Further, as shown in FIG. 4B, cover materials 125a to 125d that individually cover the processing space portions 113 to 116 may be provided. In this case, the cover members 125a to 125d are fixed by screws that are screwed into the screw holes 127a and 127b. The inner circular arc surfaces of the cover members 125a to 125d are in contact with or close to the circular arc portions 105 to 108.

As shown in FIG. 2, a small-diameter cylindrical body 130 is provided on the inner side of the cylindrical body forming the trunk portion 41 of the rope drum 80. The small-diameter cylindrical body 130 is made of a pipe, and both ends are fixed to the end portions of the first and second fixed boss members 85 and 86 in a sealed state. The small-diameter cylindrical body 130 has a gap portion of, for example, 2 to 10 mm between the inner main shaft 15 to form a grease reservoir space 131 and leaks from the first and second fixed boss members 85 and 86. The grease that comes out accumulates.

Because of the above structure, one of the grease injected from the grease injection hole 118 is sealed by the seal member 121 and the other is temporarily closed by the cover material 125. Here, there is a case where grease leaks from between the cover member 125 and the square shaft sliding portion 94, but the leaked grease becomes a lubricant for the sliding tooth portion 92. The grease filled in the first and second fixed boss members 85, 86 from the grease nipple 88 passes through the bearings 89, 90 and flows out from both sides of the bearings 89, 90 to lubricate the bearings 89, 90. And flows into the space 131 formed between the small diameter cylindrical body 130 and the main shaft 15.

However, since the volume of the space portion 131 is sufficiently smaller than the volume of the space portion formed between the trunk portion 41 and the main shaft 15, the space portion 131 is filled with a small amount of grease injection, resulting in resistance to grease injection, The grease filling status can be grasped. In this embodiment, the grease flowing into the space portion 131 passes through a grease inflow path formed by a gap formed between the bearings 89 and 90 and the main shaft 15, but separately from a through hole or a through groove. You may provide the grease inflow path which becomes. Further, in order to remove the grease that has entered the space portion 131, it is composed of a small-diameter cylindrical body 130 and a pipe 131a that passes through the body portion 41, and a discharge passage 131c that is normally closed by a plug 131b is formed (see FIG. 6). . Furthermore, a cover that covers the fixed tooth portion 91 and the sliding tooth portion 92 according to the present embodiment can be provided to prevent leakage of grease.

Next, the chain drums 81 and 82 shown in FIG. 1 will be described. Each of the chain drums 81 and 82 includes a chain drum main body 138 and 139 having a well-known structure, a bearing housing of the first fixed boss member, and a bearing housing of the second fixed boss member, which are integrated into one rotating body 140. 141, and is rotatably attached to the main shaft 15 via a metal bush 142 which is an example of a bearing housed inside the rotating bodies 140, 141. The metal bush 142 may be divided into two pieces.

Fixed tooth portions 143 and 144 are formed at portions corresponding to the first fixed boss members on one side of the rotating bodies 140 and 141 (in this embodiment, one side and the other side, respectively). In addition, the sliding boss members 148 and 149 provided so as to be slidable on the angular shaft sliding portions 146 and 147 of the main shaft 15 have sliding tooth portions 150 and 151 that mesh with the fixed tooth portions 143 and 144, respectively. doing. The fixed teeth 143 and 144 and the sliding teeth 150 and 151 form the clutch means 153 and 154, and the rotation of the main shaft 15 is transmitted to the rotating bodies 140 and 141 by operating the clutch levers 155 and 156. The configurations of the sliding boss members 148 and 149 and the angular axis sliding portions 146 and 147 are the same as the sliding boss member 93 and the angular axis sliding portion 94 of the winch device 60 according to the first embodiment.
Each leg member 61-64 is preferably provided with a receiving container 158 (see FIG. 2) that receives the overflowed grease when the grease overflows from the bearing portions 65-68. ,

Subsequently, a winch device 160 according to a second embodiment of the present invention will be described with reference to FIGS. 5 and 6. The winch device 160 includes a rope drum 161 and one chain drum 162. In the basic configuration, the winch device 160 is different from the winch device 60 according to the first embodiment. The winch device 60 uses a metal bush (an example of a sliding bearing) as a bearing. Is that self-aligning bearings 165 to 168 are used as the bearings. Therefore, the same reference numerals are used for substantially the same components as the winch device 60, and the description may be omitted.

The winch device 160 includes a base gantry 60a, four leg members 62 to 64 erected on the base gantry 60, bearing members 170, 171 and 68 mounted on the leg members 62 to 64, respectively, and freely rotatable on these members. A main shaft 15 is provided. The bearing members 170 and 171 have bearing housings 174 and 175 fixed to the leg members 62 and 63. Self-aligning bearings 165 and 168 are provided in the bearing housings 174 and 175, and a bearing 76 made of a metal bush is disposed in the bearing housing 72 of the bearing member 68 as usual. Can also be used.

As the first and second fixed boss members 177 and 178, self-aligning bearings 166 and 167 are used instead of the bearings 89 and 90 made of metal bushes. A fixed tooth portion 179 is provided on one side of the first fixed boss member 177, and a sliding tooth portion 181 is provided on the other side of the sliding boss member 180. Similar to the sliding boss member 93 of the winch device 60, the sliding boss member 180 has a square hole 95 inside, moves the square shaft sliding portion 94 in the axial direction, and the fixed tooth portion 179 and the sliding tooth. The meshing and non-meshing operations of the portion 181 are performed. That is, the fixed tooth portion 179 and the sliding tooth portion 181 form the clutch means 182 that turns the rope drum 161 on and off.

In the winch device 160, a seal member 121 is provided on one of the sliding boss members 180, a stainless pipe 122 is shrink-fitted on the main shaft 15 of the sliding portion, and the seal member 121 is a seal retainer 123. It is fixed, the cross section of the square-axis sliding part 94 is a square with a cross-section with the corners arced, the machining space parts 113 to 116 are provided at the four corners of the square hole 95, and the sliding boss member 180. Has a plurality of grease injection holes 118, each of which is fitted with a grease nipple, an annular grease groove 119 is provided at the base of the grease injection hole 118, and a sliding boss member 180. The other side is provided with a cover material 125 for preventing easy leakage of grease from the processing space portions 113 to 116, and the first and second fixed bosses inside the body portion 41. The small diameter cylindrical body 130 for connecting the inner facing portion of the timber 177, 178 is provided is the same as the winch device 60 according to the first embodiment.

The chain drum 162 has a structure similar to that of the chain drum 82 of the winch device 60, and the clutch drum 154 is operated to turn the chain drum 162 on and off.
In order to prevent the clutch means 182 (96, 153, 154) from being exposed on one side of the rope drum 161 (same for 80) and the chain drum 162 (same for 81, 82), brake drums 183, 184 are provided. It is preferable to arrange.
Cover plates 186 to 191 having seal members (oil seals) are provided on both sides of the bearing housings 174 and 175 and on one side of the first and second fixed boss members 177 and 178. The stainless steel pipes 196 to 201 are shrink-fitted into the circular section of the main shaft 15 in the moving part, so that the self-aligning bearings 165 to 168 are lubricated by being injected from the grease injection holes 192 to 195. Prevents leakage.

The present invention is not limited to the above-described embodiment, and a new winch device is configured by combining the winch device 60 according to the first embodiment and the winch device 160 according to the second embodiment. The present invention also applies.
Further, the cross sections of the angular axis sliding portion and the square hole are not limited to a square with rounded corners, and may be other polygonal shapes.
Further, in the winch device according to the present invention, grease is used as a lubricant, but the present invention is applied regardless of whether a part of the grease flows out of the gap or is completely sealed.

Further, the chain drum can be rotatably connected to the main shaft on one side of the chain drum body via the first fixed boss member and on the other side via the second fixed boss member (see FIG. 7). Further, on the inside of the chain drum body, on the outside of the main shaft, a small-diameter cylindrical body is provided with the main shaft aligned with the axis, and the grease injected into the bearings of the first and second fixed boss members is a grease inflow path (for example, You may make it flow in into the space part formed between the main axis | shaft and the small diameter cylindrical body via the clearance gap between a bearing and a chain drum main body, or between a main axis | shaft and a bearing.

10, winch device, 11: hydraulic motor, 12: small gear, 13: large gear, 15: main shaft, 16: leg member, 17: bearing member, 18: bearing housing, 19: bush, 20: rope drum, 21: Chain drum, 22, 23: first fixed boss member, 24, 25: second fixed boss member, 27: fixed tooth portion, 28: angular axis sliding portion, 30: sliding boss member, 32: sliding Tooth part, 33, 34: Clutch lever, 35, 36: Clutch mechanism, 37: Boss hole, 38: Seal member, 39: Cover cover, 40: Through hole, 41: Body part, 42: Sealed space part, 43 ~ 46: surface, 47-50: corner portion, 51-54: machining space portion, 56: grease injection hole, 57: grease groove, 60: winch device, 60a: base mount, 61-64: leg member, 65-68 : Bearing member, 69 to 72: Bearing housing 73-76: bearing, 77: grease injection hole, 78: grease nipple, 80: rope drum, 81, 82: chain drum, 83, 84: side plate member, 85: first fixed boss member, 86: first 2, fixed boss member, 87: grease injection hole, 88: grease nipple, 89, 90: bearing, 89a, 90a: stopper fitting, 91: fixed tooth portion, 92: sliding tooth portion, 93: sliding boss member, 94: Square shaft sliding part, 95: Square hole, 96: Clutch means, 97: Clutch lever, 98: Cylindrical material, 100-103: Surface, 105-108: Arc part, 109-112: Sliding surface, 113 ˜116: processing space portion, 118: grease injection hole, 119: annular grease groove, 120: groove bottom, 121: seal member, 122: stainless steel pipe, 123: seal presser, 125, 125a-12 d: Cover material, 126: Circular hole, 127, 127a, 127b: Screw hole, 130: Small diameter cylindrical body, 131: Space part, 131a: Pipe, 131b: Plug, 131c: Discharge path, 138, 139: Chain drum body 140, 141: Rotating body, 142: Metal bush, 143, 144: Fixed tooth portion, 146, 147: Square shaft sliding portion, 148, 149: Sliding boss member, 150, 151: Sliding tooth portion, 153 154: clutch means, 155, 156: clutch lever, 158: receiving container, 160: winch device, 161: rope drum, 162: chain drum, 165 to 168: self-aligning bearing, 170, 171: bearing member, 174 175: bearing housing, 177: first fixed boss member, 178: second fixed boss member, 179: fixed tooth portion, 1 80: sliding boss member, 181: sliding tooth portion, 182: clutch means, 183, 184: brake drum, 186 to 191: lid plate, 192 to 195: grease injection hole, 196 to 201: stainless steel pipe

Claims (9)

1) a main shaft supported by a plurality of bearing members and connected to a rotational drive source; 2) a first fixed boss member having a fixed tooth portion on one side; and a second fixed boss member. A drum provided rotatably, and 3) a slide that has a square hole that slidably engages with a square-axis sliding portion having a square cross section formed at a specific position of the main shaft, and that meshes with the fixed tooth portion. A sliding boss member having a tooth part on the other side, and the fixed tooth part and the sliding tooth part constitute clutch means for turning on and off the rotation of the drum, and the sliding boss member is a grease. In the winch device having an injection hole and an annular grease groove connected to the grease injection hole, and a processing space portion communicating with the annular grease groove is formed in an axial direction at a corner portion of the square hole,
One side of the sliding boss member is provided with a seal member that is in contact with and slides on the main shaft having a circular cross section on one side of the angular shaft sliding portion. A winch device characterized in that a cover material for covering the processing space is provided on the side. 2. The winch device according to claim 1, wherein the cover material is formed in an annular shape and simultaneously closes the plurality of processing space portions. The winch device according to claim 1, wherein the cover member is divided in a circumferential direction. The winch device according to claim 1, wherein the cover material is provided for each processing space portion. 5. The winch device according to claim 1, wherein the drum is a rope drum having a body portion and side plates A and B provided on both sides of the body portion, and the side plate A on one side is The winch device, wherein the side plate B on the other side is rotatably attached to the main shaft via the second fixed boss member via the first fixed boss member. 5. The winch device according to claim 1, wherein the drum is a chain drum, and one side of the chain drum main body is interposed between the first fixed boss members and the other side is the second fixed. A winch device, wherein the winch device is rotatably connected to the main shaft via a boss member. 5. The winch device according to claim 1, wherein the drum is a chain drum, and a chain drum main body, a bearing housing of the first fixed boss member, and a bearing housing of the second fixed boss member. A winch device characterized in that is integrally attached to the main shaft via bearings housed inside thereof. 6. The winch device according to claim 5, wherein a small-diameter cylindrical body having a gap between the main shaft and an inner side of the cylindrical body forming the trunk portion is provided and injected into the bearings of the first and second fixed boss members. The winch device in which the grease thus introduced flows into a space formed between the main shaft and the small-diameter cylindrical body through the grease inflow passage. The winch device according to claim 6, wherein a small-diameter cylindrical body is provided on the inner side of the chain drum main body and on the outer side of the main shaft so as to be aligned with the main shaft, and the first and second fixed boss members. A winch device in which grease injected into a bearing flows into a space formed between the main shaft and the small-diameter cylindrical body through a grease inflow passage.

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