KR101640163B1 - Large size winch for marine crane - Google Patents

Large size winch for marine crane Download PDF

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Publication number
KR101640163B1
KR101640163B1 KR1020160030377A KR20160030377A KR101640163B1 KR 101640163 B1 KR101640163 B1 KR 101640163B1 KR 1020160030377 A KR1020160030377 A KR 1020160030377A KR 20160030377 A KR20160030377 A KR 20160030377A KR 101640163 B1 KR101640163 B1 KR 101640163B1
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KR
South Korea
Prior art keywords
sub
band
brake
winding drum
drive motor
Prior art date
Application number
KR1020160030377A
Other languages
Korean (ko)
Inventor
이종열
류용석
황동환
배재일
장진우
Original Assignee
이케이 중공업 (주)
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Priority to KR1020160030377A priority Critical patent/KR101640163B1/en
Application granted granted Critical
Publication of KR101640163B1 publication Critical patent/KR101640163B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
    • B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B66D5/10—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/26—Operating devices pneumatic or hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/32—Detent devices
    • B66D5/34—Detent devices having latches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/05—Brakes with mechanisms with latches for hoists or similar devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/07—Brakes with axial thrust for winches, hoists or similar devices

Abstract

The present invention relates to a large winch for a marine crane having improved braking performance. When a braking or decelerating operation of a take-up drum is performed, a caliper brake as a primary braking device is brought into close contact with a gear disk, The drum brake is controlled by the brake, and the ratchet brake unit, which is a tertiary brake unit, controls the rotation of the drum by hydraulic pressure, It is possible to improve the braking and deceleration performance by preventing the reverse rotation of the winding drum by contacting the pawl.

Description

{LARGE SIZE WINCH FOR MARINE CRANE}

The present invention relates to a large-sized winch for a marine crane. More specifically, when braking or decelerating a winding drum, a caliper brake as a primary braking device is closely attached to a gear disk rotating with a drive motor by hydraulic pressure, The drum brake control unit controls the rotation of the drum, the band brake as the secondary brake unit controls the rotation of the winding drum efficiently by the hydraulic pressure, and the ratchet brake unit, which is the tertiary brake unit, And more particularly to a large winch for a marine crane having improved braking performance which can improve braking and deceleration performance by preventing a reverse rotation of a winding drum by contacting a pawl to a ratchet wheel.

A marine cranes for offshore plants are equipped with a crane mounted on a barge and capable of unloading, moving and unloading heavy cargo while moving in the sea.

On the offshore cranes for offshore plants, a position (winch) for the offshore cranes, called the hoist, is installed on the barge to allow the cargo to be unloaded with stable mooring.

The winch for a marine crane is composed of a winding drum that can be rotated in forward and reverse directions and can wind the wire rope, a brake for restricting the rotation of the winding drum, and a driving motor for driving the winding drum.

However, conventional winches for marine cranes are mostly small and medium sized, and when they are constructed in a size of 150 tons or more, the support structure for high load is very weak, and the inertia of the winding drum is increased to lower the braking and deceleration performance of the winding drum there is a problem.

Korean Patent Publication No. 2012-0019684

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a hydraulic brake system in which, when braking or decelerating a winding drum, a caliper brake as a primary braking device is brought into close contact with a gear disk, The band brake as the secondary brake unit efficiently controls the rotation of the winding drum by the hydraulic pressure and the ratchet brake unit which is the tertiary brake unit applies the hydraulic pressure to the ratchet wheel to rotate the pawl Which is capable of improving braking and decelerating performance by preventing reverse rotation of the winding drum by bringing the rotating drum into contact with the take-up drum.

In order to achieve the above object, the present invention provides a large winch for a marine crane.

The large winch for a maritime cranes of the present invention comprises a base structure installed on a deck of a marine crane; A skid structure longitudinally installed on one side of the base structure; A main gear box structure longitudinally installed on the other side of the base structure and having a main rotation shaft; A winding drum disposed laterally between the skid structure and the main gearbox structure so as to be rotatably coupled to the main rotating shaft and wound around the outer circumferential surface thereof with a wire rope for a winch; A first sub gear box structure having a sub rotation axis connected to the main gear box structure; A first drive motor longitudinally mounted on top of the first sub gearbox structure for transmitting power to the first sub gearbox structure; A first gear plate mounted on a rotating shaft of the first driving motor; A second sub gear box structure having a sub-rotation axis connected to the main gear box structure; A second drive motor longitudinally mounted on top of the second sub gearbox structure for transmitting power to the second sub gearbox structure; A second gear plate installed on a rotating shaft of the second driving motor; A gear disk disposed between the first gear plate and the second gear plate so as to be meshed with the first gear plate and the second gear plate; A caliper brake installed to suppress rotation of the gear disk; A band brake unit installed on one side of the base structure for controlling rotation of the winding drum; And a ratchet brake unit installed on the other side of the base structure to prevent reverse rotation of the winding drum.

The rotation axis of the gear disk is rotatably supported by a support bracket, and the gear disk can be prevented from being exposed to the outside by the cover.

The band brake unit comprising: a band brake disc fixed to an outer periphery of the winding drum; A brake band positioned on the outer circumferential surface of the band brake disc and being in close contact with or spaced from the outer circumferential surface of the band brake disc; An anchor fixed to the base structure and fixing one end of the brake band; A hydraulic cylinder fixed to the anchor; A rotating bracket rotatably hinged to the anchor by the hydraulic cylinder; And a link provided on the pivotal bracket for pressing the other end of the brake band.

A ratchet wheel fixed to an outer periphery of the winding drum and having a latching protrusion; A pole hinged to the anchor to selectively engage with the locking protrusion to prevent reverse rotation of the winding drum; And a hydraulic cylinder for driving the pawl.

Wherein the first sub gearbox structure and the second sub gear structure are disposed on the base plate in such a manner that grid-shaped ribs are provided at regular intervals on one side of the base structure, a base plate is horizontally installed on the grid- The box structure can be mounted.

Vertical frames may be provided longitudinally at corner portions of the first sub gearbox structure and the second sub gearbox structure, and horizontal plates may be provided at upper and lower portions of the vertical frame.

A heat radiation opening may be formed on the side surfaces of the first sub gear box structure and the second sub gear box structure.

A drive motor support bracket for mounting the first drive motor and the second drive motor is provided at the center of the upper horizontal plate, and the drive motor support bracket includes a circular plate, a vertical plate formed radially As shown in Fig.

As described above, when braking or decelerating the take-up drum, the caliper brake as the primary brake device is brought into close contact with the gear disk rotating together with the drive motor under the hydraulic pressure to control the rotation of the winding drum, The ratchet brake unit which is a tertiary brake unit makes contact with a ratchet wheel by a hydraulic pressure to prevent reverse rotation of the winding drum, The braking and decelerating performance of the drum can be improved.

Further, by providing the grid-like ribs and the base plate at the lower portion of the base structure and constituting the drive motor support bracket as the vertical ribs formed radially and formed perpendicularly to the disk and the disk, sufficient rigidity .

The braking and decelerating performance of the winding drum can be further improved by bringing the brake band into close contact with the outer circumferential surface of the band brake disk so that eccentricity is not generated by pulling both end portions of the brake band with uniform force, And the gear life can be prolonged.

The caliper brake braking in the conventional winch can assume a configuration in which two caliper brakes are provided per one set of the drive motor and the sub gearbox structure. However, in the present invention, by the connection structure of the gear disk and the gear plate, And two caliper brakes are provided per two sets of sub gearbox structures. Since the first and second sub gearbox structures are tuned to each other, braking and decelerating performance of the take-up drum can be further improved, It is possible to prevent the gears from being deformed and to prolong the gear life.

1 is a perspective view showing a large winch for a marine crane of the present invention;
2 is a front view showing a large winch for a marine crane of the present invention
3 is a right side view showing a large winch for a marine crane of the present invention
Fig. 4 is a plan view showing a large winch for a marine crane of the present invention
5 is a side view showing the inside of the main gearbox structure of the present invention
6 is a longitudinal sectional view showing the interior of the first sub gear box structure of the present invention
7 is a longitudinal sectional view showing the inside of the second sub gear box structure of the present invention
8 is a side view showing a band break unit according to an embodiment of the present invention
9 is a side view showing a band break unit according to another embodiment of the present invention
10 is a cross-sectional view of the band break unit before and after pulling of the wire according to another embodiment of the present invention
11 is a side view showing the ratchet brake unit of the present invention

Hereinafter, a large winch for a marine crane according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a large winch for a marine crane of the present invention, FIG. 2 is a front view showing a large winch for a marine crane of the present invention, FIG. 3 is a right side view showing a large winch for a marine crane of the present invention, FIG. 5 is a side view showing the inside of the main gearbox structure of the present invention, FIG. 6 is a longitudinal sectional view showing the interior of the first sub gearbox structure of the present invention, FIG. FIG. 8 is a side view showing a band brake unit according to an embodiment of the present invention. FIG.

Referring to the drawings, a large winch for a marine cranes of the present invention includes a base structure 10, a skid structure 20, a main gearbox structure 30, a winding drum 40, a first sub gearbox structure 50, A first drive motor 60, a first gear plate 70, a second sub gearbox structure 80, a second drive motor 90, a second gear plate 110, a gear disk 120, A brake 130, a band brake unit 140, and a ratchet brake unit 150. [

A large-scale winch (100) for a marine cranes of the present invention is a large-sized 150-ton facility installed on a marine crane, and has a plurality of pad eyes (P) at appropriate positions to connect a crane when it is transported.

The base structure 10 can be fixedly mounted on the deck of a floating crane. The base structure 10 is provided with a reinforcing structure so as to withstand the high load applied to the base structure 10.

That is, in the present invention, for the reinforcing structure of the base structure 10, grid-shaped ribs 11 are provided at one side of the base structure 10 at regular intervals from one another in the longitudinal direction, The plate 12 is installed horizontally. A first sub gearbox structure 50 and a second sub gearbox structure 80 may be mounted on the base plate 12.

The skid structure 20 is fixed to one side of the base structure 10 in the longitudinal direction. An encoder (21) is installed in the skid structure (20) to sense and control the number of revolutions of the winding drum (40).

When the winding drum 40 rotates, the encoder 21 also rotates, so that the length of the wire rope (not shown) can be measured by sensing the number of revolutions of the winding drum 40.

The main gearbox structure 30 is installed on the other side of the base structure 10 as a secondary reduction gear in the longitudinal direction and has a main rotation shaft 31. The main rotating shaft 31 is supported on the skid structure 20 through the winding drum 40.

A cover 32 may be provided on the upper portion of the main gear box structure 30.

The winding drum 40 is positioned transversely between the skid structure 20 and the main gearbox structure 30 and is rotatably coupled to the main rotation shaft 31 and the wire rope for winch is wound on the outer circumferential surface. The skid structure 20 is provided with a bearing (not shown), and the main rotating shaft 31 is supported by the bearing so that the winding drum 40 can rotate smoothly.

On the outer peripheral surface of the winding drum 40, a plurality of grooves 41 into which the winding wire rope is inserted may be formed.

The first sub-gearbox structure 50 has a sub-rotary shaft 51 connected to the main gear box structure 30 as a primary reduction gear.

A first drive motor 60 is installed longitudinally on top of the first sub-gearbox structure 50 to transmit power to the first sub-gearbox structure 50. A first gear plate (70) is fixedly mounted on a rotary shaft (61) of the first drive motor (60). A cover 65 may be provided on the upper portion of the first drive motor 60.

The first sub-gearbox structure 50 has a plurality of reduction gears 53 and a vertical axis 54 connected to the reduction gears 53. The first gear plate 70 connects the vertical shaft 54 with the rotary shaft 61 of the first drive motor 60.

The reduction gear cover (see FIG. 1 and FIG. 3) can be detachably installed, and the maintenance work can be performed easily because the reduction gear cover can be opened to perform maintenance.

The first sub gearbox structure 50 is provided with vertical frames 56 in the longitudinal direction at four corner portions and a horizontal plate 57 at the upper and lower portions of the vertical frame 56. A plurality of heat dissipation openings 58 may be formed in the side surfaces of the first sub gearbox structure 50.

A drive motor support bracket 59 for mounting the first drive motor 60 is provided at the center of the horizontal plate 57 located at the upper portion of the vertical frame 56. The drive motor support bracket 59 is fixed to the disk 59a And a vertical rib 59b formed perpendicularly to the disk 59a and disposed radially.

The load of the first drive motor 60 is dispersed in the radial direction through the vertical ribs 59b and the original plate 59a can firmly support the high load of the first drive motor 60. [

The second sub gearbox structure 80 also has a sub-rotary shaft 81 connected to the main gear box structure 30 as a primary reduction gear.

A second drive motor 90 is installed longitudinally on top of the second sub gearbox structure 80 to transmit power to the second sub gearbox structure 80. The second gear plate 110 is fixedly mounted on the rotary shaft 91 of the second drive motor 90. A cover 95 may be provided on the upper portion of the second drive motor 90.

The second sub-gearbox structure 80 has a plurality of reduction gears 83 and a vertical axis 84 connected to the reduction gears 83. The second gear plate 110 connects the vertical shaft 84 and the rotary shaft 91 of the second drive motor 90.

The second sub gearbox structure 80 is provided with a vertical frame 86 in the longitudinal direction at four corners and a horizontal plate 87 at the top and bottom of the vertical frame 86. A plurality of heat dissipation openings 88 may be formed in the side surface of the second sub gearbox structure 80.

A drive motor support bracket 89 for mounting the second drive motor 90 is provided at the center of the horizontal plate 87 located at the upper portion of the vertical frame 86. The drive motor support bracket 89 has a circular plate 89a And a vertical rib 89b formed perpendicularly to the circular plate 89a and disposed radially.

The gear disk 120 is positioned between the first gear plate 70 and the second gear plate 110 and meshed with the first gear plate 70 and the second gear plate 110.

The rotation shaft 121 of the gear disk 120 is rotatably supported by the support bracket 123 and the gear disk 120 can be prevented from being exposed to the outside by the cover 125. [

The cover 125 prevents foreign matter from flowing and smoothes engagement of the gear disk 120, the first gear plate 70, and the second gear plate 110, Can be effectively prevented.

The caliper brake 130 is provided for braking or decelerating the rotation of the gear disk 120 as needed. Two gears may be provided on one side of the gear disk 120, and may be disposed on opposite sides of the gear disk 120. The number and arrangement of the caliper brakes 130 can be variously changed according to the design conditions.

The band brake unit 140 is installed at one side of the base structure 10 in order to suppress or reduce the rotation of the winding drum 40.

The band brake unit 140 according to one embodiment includes a band brake disc 141 fixed to the outer periphery of the winding drum 40; A brake band 142 disposed on the outer circumferential surface of the band brake disc 141 to be in close contact with or spaced from the outer circumferential surface of the band brake disc 141; An anchor 143 fixed to the base structure 10 and fixing one end 142a of the brake band 142; A hydraulic cylinder 144 fixed to the anchor 143; A rotation bracket 145 installed on the anchor 143 by a hydraulic cylinder 144 so as to be rotatable with a hinge H; And a link 146 installed on the pivotal bracket 145 and pressing the other end 142b of the brake band 142. [ The brake band 142 is constituted by a first brake band 142a and a second brake band 142b which are engaged by the hinge H.

The operation of the band brake unit 140 according to one embodiment will be described as follows.

When the rod of the hydraulic cylinder 144 rises when the winding drum 40 is braked or decelerated, the rotating bracket 145 rotates about the hinge H in the direction of the arrow. The link 146 then advances and presses the other end 142b of the brake band 142. One end 142a of the brake band 142 remains fixed to the anchor 143 and the brake band 142 is moved by the action of the link 146 pressing the other end 142b of the brake band 142. [ Is brought into close contact with the outer circumferential surface of the band brake disc 141 and is braked. When braking is released, the reverse operation of the above-described operation is performed.

FIG. 9 is a side view showing a band break unit according to another embodiment of the present invention, and FIG. 10 is a sectional view showing before and after pulling of a wire in a band break unit according to another embodiment of the present invention

Referring to the above drawing, the band brake unit 240 according to another embodiment is configured such that the tightening forces at both ends of the brake band 242 are uniform, so that the eccentricity does not occur and the band braking force is further improved.

The band brake unit 240 according to another embodiment includes a band brake disc 141 fixed to the outer periphery of the winding drum 40; A brake band 142 disposed on the outer circumferential surface of the band brake disc 141 to be in close contact with or spaced from the outer circumferential surface of the band brake disc 141; And a slot 243b for sliding the one end portion 142a is formed to be elastically supported by one end 142a of the brake band 142 by a spring 243a and fixed to the base structure 10 Anchor 243; A hydraulic cylinder 244 fixed to the anchor 243; A rotation bracket 245 rotatably mounted on the anchor 243 by the hydraulic cylinder 244; A link 246 installed on the pivotal bracket 245 for pressing the other end 142b of the brake band 142; A wire 247 connecting the one end 142a and the pivotal bracket 245 so as to pull the one end 142a using the rotational force of the pivotal bracket 245; And a wire guide roll 248 installed on a side surface of the anchor 243 to guide the wire 247.

The spring 243a is positioned in the slot 243b and is maintained in a compressed state (see Fig. 10 (a)) and is stretched by pulling the wire 247 (Fig. 10 (b) Reference).

One end 142a of the brake band 142 is configured to overcome the elastic force of the spring 243a by the wire 247 and to be pulled in the direction of the arrow by using the rotational force of the turning bracket 245. [

The operation of the band break unit 240 according to another embodiment will now be described.

When the rod of the hydraulic cylinder 244 rises when the winding drum 40 is braked or decelerated, the rotating bracket 245 rotates about the hinge H in the direction of the arrow.

Then, at the same time as the link 246 is turned, the rod of the link 246 advances and presses the other end 142b of the brake band 142. [

At the same time, the wire 247 is guided by the wire guide roll 248 using the rotational force of the rotation bracket 245 to overcome the elastic force of the spring 243a and pull the one end 142a of the brake band 142 At this time, one end 142a of the brake band 142 moves along the slot 243b, and the spring 243a is extended. With this operation, both end portions 142a and 142b of the brake band 142 are pulled with a uniform force. The braking of the take-up drum 40 and the braking of the take-up drum 40 are performed by bringing the brake band 142 into close contact with the outer peripheral surface of the band brake disc 141 so that the pulling force of the both ends 142a, The deceleration performance can be further improved. When braking is released, the reverse operation of the above-described operation is performed.

11 is a side view showing the ratchet brake unit of the present invention.

Referring to FIG. 11, the ratchet brake unit 150 is installed on the other side of the base structure 10 to prevent reverse rotation of the winding drum 40.

The ratchet brake unit (150) includes a ratchet wheel (151) fixed to the outer periphery of the winding drum (40) and having a latching protrusion (152); A pawl 153 which hinges to the anchor 155 to selectively engage with the latching protrusion 152 to prevent reverse rotation of the winding drum 40; And a hydraulic cylinder 154 for driving the pawl 153. A guide plate 155 is positioned on the ratchet wheel 151 to guide the pawl 153 to be accurately engaged with the latching protrusion 152.

The operation of the large winch for a marine crane constructed as described above will be described below.

When the first drive motor 60 and the second drive motor 90 are driven, the first sub-gear 60 connected to the rotation shaft 61 of the first drive motor 60 and the rotation shaft 91 of the second drive motor 90, The box structure 50 and the second sub gearbox structure 80 are subjected to the first deceleration. Subsequently, the main gear box structure 30 connected to the sub rotation shafts 51 and 81 performs second deceleration.

The main rotation shaft 31 of the main gear box structure 30 rotates the winding drum 40 by reducing the rotation of the first drive motor 60 and the second drive motor 90 by about 1: When the winding drum 40 rotates, the encoder 21 also rotates, and the length of the wire rope is measured by sensing the number of revolutions of the winding drum 40.

On the other hand, when the take-up drum 40 is braked or decelerated, a caliper brake 130, which is a primary braking device, receives a hydraulic pressure and rotates together with the first and second drive motors 60 and 90, (Not shown). At this time, rotation of the first gear plate 70 and the second gear plate 110 engaged with the gear disk 120 is braked.

At the same time, a band brake 140, which is a secondary brake unit, efficiently controls the rotation of the winding drum 40 by using hydraulic pressure, and the ratchet brake unit 150, which is a tertiary brake unit, The pawl is brought into contact with the locking projection 152 of the ratchet wheel 151 to prevent the winding drum 40 from rotating in the reverse direction.

The caliper brake 130 and the band brake 140 control the rotation of the winding drum 40 and the ratchet brake unit 150 rotates the winding drum 40 in the reverse direction It is possible to remarkably improve the braking and decelerating performance of the winding drum.

In the present invention, for the reinforcing structure of the base structure 10, grid-shaped ribs 11 are provided at one side of the base structure 10 at regular intervals from one another in the longitudinal direction, The plate 12 is installed horizontally. A first sub gearbox structure (50) and a second sub gearbox structure (80) are mounted on the base plate (12). A drive motor support bracket 89 for mounting the second drive motor 90 is provided at the center of the horizontal plate 87 located at the upper portion of the vertical frame 86. The drive motor support bracket 89 is a plate- And a vertical rib 89b formed radially and perpendicularly to the circular plate 89a. Thus, it is possible to secure sufficient rigidity against a high load due to enlargement.

As described above, when braking or decelerating the winding drum, a caliper brake as a primary brake device is brought into close contact with a gear disk rotating together with the drive motor under hydraulic pressure to control the rotation of the winding drum, A band brake as a device controls the rotation of the take-up drum efficiently by hydraulic pressure, and a ratchet brake unit as a tertiary brake device makes hydraulic contact with a ratchet wheel to cause a pawl to come in contact with the take- It is possible to improve the braking and decelerating performance of the winding drum.

Further, by providing the grid-like ribs and the base plate at the lower portion of the base structure and constituting the drive motor support bracket as the vertical ribs formed radially and formed perpendicularly to the disk and the disk, sufficient rigidity .

Further, the braking and decelerating performance of the winding drum can be further improved by bringing the both ends of the brake band uniformly into contact with the outer circumferential surface of the band brake disk so that the eccentricity does not occur.

10: base structure
11: Grating rib
12: Base plate
20: Skid structure
21: Encoder
30: Main gearbox structure
31: main rotating shaft
32: cover
40: winding drum
41: Home
50: First sub gear box structure
51: Sub-
53: Reduction gear
54: vertical axis
56: Vertical frame
57: Horizontal plate
58: Heat dissipation opening
59: Drive motor support bracket
59a: Disc
59b: vertical rib
60: first drive motor
61:
65: cover
70: first gear plate
80: Second sub gearbox structure
81: Sub-
83: Reduction gear
84:
86: Vertical frame
87: Horizontal plate
88: Heat dissipation opening
89: Drive motor support bracket
89a: Disc
89b: Vertical rib
90: second drive motor
95: cover
110: second gear plate
120: gear disk
121:
123: Support bracket
125: cover
130: Caliper brake
140: Band brake unit
141: Band brake disc
142: Brake band
142a: One end of the brake band
142b: the other end of the brake band
143: Anchor
144: first hydraulic cylinder
145: Pivot bracket
146: Link
150: Ratchet brake unit
151: ratcheting wheel
152:
153: Paul
154: Hydraulic cylinder
154: guide plate
155: Anchor
H: Hinge
P: Pad Eye

Claims (8)

A base structure (10) installed on a deck of a floating crane;
A skid structure 20 longitudinally installed at one side of the base structure 10;
A main gear box structure 30 longitudinally installed on the other side of the base structure 10 and having a main rotation axis 31;
A winding drum 40 which is positioned laterally between the skid structure 20 and the main gearbox structure 30 so as to be rotatably connected to the main rotation shaft 31 and on which the wire rope for winch is wound, ;
A first sub gearbox structure (50) having a sub-rotational axis (51) connected to the main gearbox structure (30);
A first drive motor (60) longitudinally mounted on top of said first sub gearbox structure (50) for transmitting power to said first sub gearbox structure (50);
A first gear plate (70) installed on a rotary shaft (61) of the first drive motor (60);
A second sub gearbox structure (80) having a sub-rotational axis (81) connected to the main gear box structure (30);
A second drive motor (90) longitudinally mounted on top of the second sub gearbox structure (80) for transmitting power to the second sub gearbox structure (80);
A second gear plate 110 installed on a rotary shaft 91 of the second drive motor 90;
A gear disk 120 disposed between the first gear plate 70 and the second gear plate 110 so as to be meshed with the first gear plate 70 and the second gear plate 110;
A caliper brake 130 installed to suppress rotation of the gear disk 120;
A band brake unit (140) (240) installed at one side of the base structure (10) to suppress the rotation of the winding drum (40); And
And a ratchet brake unit (150) installed on the other side of the base structure (10) to prevent reverse rotation of the winding drum (40). The method according to claim 1,
Characterized in that the rotation shaft (121) of the gear disk (120) is rotatably supported by a support bracket (123) and the gear disk (120) is prevented from being exposed to the outside by a cover (125) This improved large winch for marine cranes. The method according to claim 1,
The band brake unit (140) includes a band brake disc (141) fixed to the outer periphery of the winding drum (40);
A brake band 142 disposed on the outer circumferential surface of the band brake disc 141 to be in close contact with or spaced from the outer circumferential surface of the band brake disc 141;
An anchor 143 fixed to the base structure 10 and fixing one end of the brake band 142;
A hydraulic cylinder 144 fixed to the anchor 143;
A rotation bracket 145 installed on the anchor 143 by a hydraulic cylinder 144 so as to be rotatable with a hinge H; And
And a link (146) installed on the pivotal bracket (145) and pressing the other end (142b) of the brake band (142). The method according to claim 1,
The band brake unit 240
A band brake disc 141 fixed to the outer periphery of the winding drum 40;
A brake band 142 disposed on the outer circumferential surface of the band brake disc 141 to be in close contact with or spaced from the outer circumferential surface of the band brake disc 141;
And a slot 243b for sliding the one end portion 142a is formed to be elastically supported by one end 142a of the brake band 142 by a spring 243a and fixed to the base structure 10 Anchor 243;
A hydraulic cylinder 244 fixed to the anchor 243;
A rotation bracket 245 rotatably mounted on the anchor 243 by the hydraulic cylinder 244;
A link 246 installed on the pivotal bracket 245 for pressing the other end 142b of the brake band 142;
A wire 247 connecting the one end 142a and the pivotal bracket 245 so as to pull the one end 142a using the rotational force of the pivotal bracket 245; And
And a wire guide roll (248) installed on the side of the anchor (243) to guide the wire (247). The method according to claim 1,
The ratchet braking unit (150)
A ratchet wheel (151) fixed to the outer periphery of the winding drum (40) and having a latching protrusion (152);
A pawl 153 hinged to the anchor 155 to selectively engage with the latching protrusion 152 to prevent reverse rotation of the winding drum 40; And
And a hydraulic cylinder (154) for driving said pawl (153). The method of claim 2,
A plurality of grid-shaped ribs 11 are provided at a predetermined interval from one side of the base structure 10 in a longitudinal direction, a base plate 12 is horizontally installed on the grid-shaped ribs 11, 12, the first sub gearbox structure 50 and the second sub gearbox structure 80 are mounted,
Vertical frames 56 and 86 are longitudinally provided at the corners of the first sub gearbox structure 50 and the second sub gearbox structure 80, Horizontal plates 57 and 87 are provided on the upper and lower sides of the upper and lower plates, respectively,
Characterized in that heat dissipation openings (58) (88) are formed in the side surfaces of the first sub gearbox structure (50) and the second sub gearbox structure (80), respectively. . The method of claim 6,
In the center of the upper horizontal plates 57 and 87
Drive motor support brackets 59 and 89 for mounting the first drive motor 60 and the second drive motor 90 are provided,
The drive motor support brackets 59 and 89 are composed of circular plates 59a and 89a and vertical ribs 59b and 89b radially arranged perpendicularly to the circular plates 59a and 89a Features a large winch for marine cranes with improved braking performance. The method according to claim 1,
The first and second sub gearbox structures 50 and 80 are engaged with each other by the engagement structure of the gear disk 120 with the first gear plate 70 and the second gear plate 110, To improve the braking and decelerating performance of the winding drum (40) in synchronization with the rotation of the first and second sub gearbox structures (50, 80) to prevent gear deformation in the first and second sub gearbox structures (50, 80) Large winches for cranes.
KR1020160030377A 2016-03-14 2016-03-14 Large size winch for marine crane KR101640163B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112573415A (en) * 2020-12-29 2021-03-30 青岛海丽雅集团有限公司 Underwater winch adopting hydraulic braking system
CN116969324A (en) * 2023-09-22 2023-10-31 河南新科起重机股份有限公司 Energy-saving electric hoist

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200331524Y1 (en) * 2003-05-26 2003-11-01 윤학수 Windlass for a vessel
JP2004218772A (en) * 2003-01-16 2004-08-05 Manabe Zoki Kk Drive unit
KR20100001293U (en) * 2008-07-28 2010-02-08 오성국 Winch for laying cables
KR20120019684A (en) 2010-08-26 2012-03-07 삼성중공업 주식회사 Cable support device of winch for transfer system using cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004218772A (en) * 2003-01-16 2004-08-05 Manabe Zoki Kk Drive unit
KR200331524Y1 (en) * 2003-05-26 2003-11-01 윤학수 Windlass for a vessel
KR20100001293U (en) * 2008-07-28 2010-02-08 오성국 Winch for laying cables
KR20120019684A (en) 2010-08-26 2012-03-07 삼성중공업 주식회사 Cable support device of winch for transfer system using cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112573415A (en) * 2020-12-29 2021-03-30 青岛海丽雅集团有限公司 Underwater winch adopting hydraulic braking system
CN116969324A (en) * 2023-09-22 2023-10-31 河南新科起重机股份有限公司 Energy-saving electric hoist
CN116969324B (en) * 2023-09-22 2024-01-23 河南新科起重机股份有限公司 Energy-saving electric hoist

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