JP4459393B2 - Hull centering device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a hull centering device used for a ship-up operation in a bogie type lifting platform.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a hull centering device used for a ship overhead work, a device described in JP-A-12-43787 is known. In this device, centering of the hull is performed by guiding and guiding both sides of the hull on both sides in the width direction on the bogie supporting the hull while sandwiching the left and right sides of the hull while contracting and sliding toward the center of the dolly. A pair of slide guides that can be slidably expanded and contracted are provided.
[0003]
[Problems to be solved by the invention]
However, the conventional hull centering device still has the following problems to be solved.
A pair of slide guide guide rods that can be expanded and contracted is attached to the outer side of the pair of slide inner bodies, and the slide inner body is configured to slide in the pair of slide cylinders, so that friction caused by sliding The resistance is large, and as a result, particularly in the case of manual operation, the operating force is too large, which is a heavy burden on the operator.
In addition, because of the sliding type, the enlargement / reduction stroke cannot be made large, so that the size of the hull that can be handled is limited, the mechanism is complicated, and the apparatus is enlarged.
[0004]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a hull centering device that requires only a small operating force, can have a large expansion / contraction stroke, and can be made compact.
[0005]
[Means for Solving the Problems]
A hull centering device according to a first invention that meets the above-described object is used by being mounted on a trolley-type hoisting pedestal and is arranged opposite to each other so that both hulls are supported by a pair of left and right abutting members that expand and contract horizontally. in hull centering device for centering the hull in the center of the carriage type repatriation gridiron while sandwiching the outboard,
A mounting frame mounted on said carriage formula repatriation gridiron,
A pair of vertical fixing base provided opposite to both end portions of the mounting frame,
Provided a pair of said vertical fixing base, respectively, the width direction to allow scaling of the left of the hull, and a pair of guide clamping mechanism of the link type having a right abutment member,
And having a synchronous drive means for simultaneously driving the pair of the guide clamping mechanism,
Each pair of the guide clamping mechanism,
The upper and lower arms of the movable side, one end of which is pivotally supported by the first and second pins respectively above and below the left and right contact members;
The top of the vertical fixed base, the third end portion to the lower, respectively, the fixed-side on pivotally supported by the fourth pin, and the lower arm,
The other end of the fixed-side on the arm and the movable upper arm is rotatably supported by a fifth pin at its upper end, and the other end of the fixed lower arm and the movable lower arm whose lower end And a connecting vertical arm pivotally supported by a sixth pin ,
In addition, the synchronous drive means has an extension portion provided to extend to the other end of each of the pair of movable side lower arms, and is provided so as to be pivotally supported by the extension portion, and an internal thread is formed on the inner peripheral portion. And a pair of synchronous sprockets attached to each of the screw shafts, and a pair of synchronous sprockets attached to the respective screw shafts. And a synchronous chain hung on the sprocket . As a result, the left and right abutting members of the pair of link-type guide holding means provided on each of the pair of vertical fixing bases can be expanded and contracted in the horizontal direction, and as a result, the hull is pulled by a trolley while holding both sides of the hull. It can be centered in the center of the fried berth.
[0006]
Further, this enables synchronous operation by driving the screw shaft or the synchronous sprocket.
[0007]
A hull centering device according to a second aspect of the present invention is the hull centering device according to the first aspect of the present invention, wherein the movable upper arm of one of the pair of guide clamping means is provided with a manual handle, and the first handle is provided on the manual handle. A first chain connecting the second sprocket to the second sprocket provided to the first pin, a third sprocket provided to the first pin, and a fourth sprocket provided to the fifth pin A third chain connecting the second sprocket, a fifth sprocket provided on the fifth pin, and a sixth sprocket provided on the third pin, provided on the third pin The fourth chain connecting the seventh sprocket and the eighth sprocket attached to the bevel gear shaft rotatably provided on the vertical fixed base, the first bevel provided on the bevel gear shaft Connection shaft second bevel gear is mounted which meshes with the gears, and a shaft coupling connecting the connecting shaft and the screw shaft. As a result, the pair of guide holding means can be operated by operating the manual handle provided on one moving upper arm.
A hull centering device according to a third aspect of the invention is the hull centering device according to the second aspect of the invention, wherein a ninth sprocket is provided on the bevel gear shaft, and a manual operation chain that is hung around the ninth sprocket is provided. Thereby, for example, when the bogie type lifting platform is on land, the manual operation chain can be operated at the fixed position.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
1 is a front sectional view of a hull centering apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the hull centering apparatus, FIG. 3 is a side sectional view of the hull centering apparatus, and FIG. 5 is a right-side front sectional view of the hull centering device, FIG. 5 is a left-side front sectional view of the hull centering device, and FIGS. 6 (A) to (F) are (arrow AA) to (arrow FF) in FIG. FIG.
[0009]
As shown in FIGS. 1-3, the hull centering apparatus 10 which concerns on one embodiment of this invention is mounted and used for the trolley | bogie type pulling up pedestal 11, and is arrange | positioned facing, Moreover, it is a trolley | bogie. The hull 14 is lifted by a pair of left and right abutting members 12, 13 that contract toward the center O of the lifted boat stand 11. This is a device for centering at the center O.
[0010]
As shown in FIGS. 1, 4, and 5, the hull centering device 10 includes a mounting base 17 mounted on a bogie type lifting platform 11, and both ends of the mounting base 17 in the width direction of the bogie type lifting platform 11. A pair of vertical fixing bases 18 and 19 provided opposite to each other, and a pair of vertical fixing bases 18 and 19, respectively, which can be horizontally expanded and contracted in the width direction of the hull 14, and left, starboard 15, The link-type guide clamping means 20 and 21 having left and right abutting members 12 and 13 capable of abutting on 16 and the left and right abutting members 12 and 13 of the pair of guide clamping means 20 and 21 are simultaneously expanded and contracted. And synchronous driving means 22 for driving. These will be described in detail below. The width direction of the hull 14 is the X direction, the direction orthogonal to the X direction is the Y direction, and the height direction is the Z direction.
[0011]
The trolley-type lifting platform 11 is composed of a rectangular frame mainly made of grooved steel or steel plate, and two or more wheels 23 are attached to each side with a predetermined interval across the center O. . On the bogie frame 24 of the bogie type lifting vessel 11, a board 26 that supports the lowermost portion 25 of the hull 14 is provided.
The mounting base 17 is composed of an elongated frame body mainly made of channel steel or steel plate, and a pair of vertical fixing bases 18 and 19 are provided opposite to each other at both ends.
[0012]
The pair of guide clamping means 20 and 21 are fixed upper arms whose one ends are pivotally supported by third pins 28 and 29 and fourth pins 30 and 31, respectively, above and below the vertical fixing bases 18 and 19, respectively. 32, 33 and fixed lower arms 34, 35. Also, movable upper arms 40 and 41 whose one ends are pivotally supported by first pins 36 and 37 and second pins 38 and 39 on the left and right contact members 12 and 13, respectively, Lower arms 42 and 43 are provided. Further, the other ends of the fixed-side upper arms 32 and 33 and the movable-side upper arms 40 and 41 are pivotally supported by the fifth pins 44 and 45 at their upper ends, and the fixed-side lower arms 34 and 35 and the movable-side The other ends of the lower arms 42 and 43 are provided with connecting vertical arms 48 and 49 pivotally supported by sixth pins 46 and 47 at the lower ends thereof. Cushioning materials such as rubber are attached to the contact portions of the left and right contact members 12 and 13 with the hull 14 for cushioning.
[0013]
As shown in FIG. 1, the synchronous drive means 22 has extension portions 50 and 51 provided to extend to the other end portions of the pair of movable side lower arms 42 and 43. The nut portions 54 and 55 are provided so as to be supported by the shafts 52 and 53, and have an internal thread formed on the inner peripheral portion. Further, a male screw into which the female screw is screwed is formed, and is attached to the screw shafts 60 and 61 that are rotatably supported by the vertical fixing bases 18 and 19 via bearings 56 to 59, and the screw shafts 60 and 61, respectively. A pair of synchronous sprockets 62, 63 and a synchronous chain 64 spanned between the pair of synchronous sprockets 62, 63 are provided.
[0014]
As shown in FIG. 4, the upper end portion of the screw shaft 61 is connected to the lower end portion of the connecting shaft 66 via the shaft joint 65, and the upper end portion of the connecting shaft 66 is connected to the bevel gear shaft 68 via the shaft joint 67. It is connected. An intermediate portion of the bevel gear shaft 68 is rotatably supported via a bearing 69 attached to the vertical fixing base 19, and a large bevel gear (second bevel gear) 70 is attached to the upper end portion.
As shown in FIG. 3, a bevel gear shaft 72 having a small bevel gear (first bevel gear) 71 meshing with the large bevel gear 70 attached to an intermediate portion is rotatably supported by bearings 73 and 74 on both sides of the small bevel gear 71. ing. The bearing 73 side of the bevel gear shaft 72 protrudes outward in the Y direction, and a ninth sprocket 76 around which a manual operation chain 75 for operation on land is hung is attached to the end of the protruding bevel gear shaft 72. It has been. An eighth sprocket 77 is provided on the inner bevel gear shaft 72 in the vicinity of the ninth sprocket 76.
[0015]
As shown in FIGS. 2 and 4, the third, fifth, and first pins 29, 45, and 37 each have two rows of chain sprockets at the shaft ends, that is, sixth, seventh sprocket, fourth, A fifth sprocket, a second sprocket, and a third sprocket are attached. A rotating shaft 80 of a manual handle 79 provided via a bracket 78 on the upper end of the right abutting member 13 has a first pin 37 attached thereto. A first sprocket 81 corresponding to the second sprocket is attached. The third sprocket of the first pin 37 and the fourth sprocket of the fifth pin 45 are connected by the first chain 82 in which the first sprocket 81 and the second sprocket of the first pin 37 are endless. The fifth sprocket of the fifth pin 45 and the sixth sprocket of the third pin 29 are connected by the endless second chain 83 to the seventh sprocket of the third pin 29 by the endless third chain 84. The sprocket and the eighth sprocket 77 provided on the bevel gear shaft 72 are connected by an endless fourth chain 85.
[0016]
Therefore, when the operator 86 on the hull 14 rotates the manual handle 79 forward and backward, the endless first to fourth chains 82, 83, 84, and 85 are operated to rotate the bevel gear shaft 72 forward and backward. Further, the connecting shaft 66 and the screw shaft 61 can be rotated, and finally the screw shaft 60 can be rotated via the synchronization chain 64. As a result of forward and reverse rotation of the screw shafts 60 and 61, the nut portions 54 and 55 can move up and down along the screw shafts 60 and 61, as shown in FIGS. As a result, the left and right abutting members 12 and 13 of the pair of guide clamping means 20 and 21 shown by solid lines in FIGS. 1, 4, and 5 are opposed to both sides of the hull 14 (left port 15 and starboard 16). The hull 14 can be centered on the center O of the trolley-type lifted hull 11 while sandwiching the hull 14 while being reduced.
[0017]
Here, with reference to FIG. 1, the geometric structure of a pair of guide clamping means 20 and 21 is demonstrated in detail. First, the position of each pin when the guide clamping means 20 and 21 are in the standby position will be expressed as follows.
The first pin 37 of the guide clamping means 21 is a ₁ , the third pin 29 is b ₁ , the fifth pin 45 is c ₁ , the second pin 39 is d ₁ , the fourth pin 31 is e ₁ , The sixth pin 47 is f ₁ , the pin 53 is g ₁ , the first pin 36 of the guide clamping means 20 is a ₂ , the third pin 28 is b ₂ , the fifth pin 44 is c ₂ , The _second pin 38 is d ₂ , the fourth pin 30 is e ₂ , the sixth pin 46 is f ₂ , and the pin 52 is g ₂ .
Next, when the guide clamping means 20 and 21 are driven and the left and right abutting members 12 and 13 are in the operation limit position where they are moved to the maximum, the reference numeral 1 in the standby position is number 3 In addition, the code number 2 is changed to the number 4.
[0018]
Since the guide clamping means 20 is different from the guide clamping means 21, only the guide clamping means 21 will be described. When the guide clamping means 21 is in the standby position, the triangle a ₁ b ₁ c ₁ is congruent with the triangle d ₁ e ₁ f ₁ and is a high isosceles triangle. The line segment a ₁ d ₁ , the line segment b ₁ e _1, and the line segment c ₁ f ₁ have the same length and face the Z direction (vertical direction). The line segment a ₁ b ₁ and the line segment d ₁ e ₁ have the same length and are directed in the X direction (horizontal direction), and the extension lines of the line segment c ₁ f ₁ are the line segment a ₁ b ₁ and the line segment d. ₁ e ₁ is divided into two equal parts. g ₁ is located on an extension line of the line segment b ₁ e ₁ . The guide holding means 20 is the same as the guide holding means 21.
[0019]
From this state, in the guide clamping means 21, when the screw shaft 61 is rotated by the synchronous drive means 22, the nut portion 55 is raised so that the pin 53 (g ₁ ) at the lower end portion of the movable side lower arm 43 is moved to the screw shaft 61. And the upper end of the nut portion 55 comes into contact with the lower end of the bearing 58 and stops at g ₃ . This stopped state is represented by a two-dot chain line as an operation limit position. Therefore, as shown in FIG. 1, the parallelogram a ₃ d ₃ f ₃ c ₃ and the parallelogram b ₁ e ₁ f ₃ c ₃ are symmetric with respect to the line segment f ₃ c ₃ . G ₃ is on an extension of the line segment d ₃ f ₃ . The guide pinching means 20 is the same as the guide pinching means 21 because the screw shaft 60 rotates simultaneously when the screw shaft 61 is rotated by the synchronous chain 64.
Accordingly, the left and right abutting members 12 and 13 are opposed to each other and contracted so that the hull 14 can be finally centered on the center O of the trolley-type lifted hull 11 while abutting on both sides of the hull 14.
[0020]
Reference numerals 87 and 88 in FIG. 4 or 5 represent plate-like stoppers with which the lower ends of the nut portions 54 and 55 of the guide clamping means 20 and 21 abut. Further, reference numeral 89 in FIGS. 1, 4 and 5 represents a long chain receiver with a cross-sectional groove shape made of MC nylon that supports the synchronous chain 64 on a horizontal plane. The chain receiver 89 is a mounting base 17. Installed on. Reference numeral 90 in FIGS. 1 and 3 represents a gear box. Reference numeral 91 in FIG. 5 denotes a fixed pin that fixes the left abutting member 12 and the movable lower arm 42, and reference numeral 92 denotes a chain that is attached to the fixed pin 91 and fixed to the lower portion of the movable lower arm 42. ing. As shown in FIGS. 6A to 6F, each arm has a cylindrical arm body having a rectangular cross section in the middle, and both ends of the arm body, that is, connecting portions to the pins are pins. It is comprised from a pair of board | plate material arrange | positioned at predetermined intervals in the axial direction. By configuring in this way, the rigidity of the arm can be increased, the weight of the arm can be reduced, and the stroke can be increased.
[0021]
Next, a method of using the hull centering device 10 according to one embodiment of the present invention will be described with reference to the drawings.
(1) As shown in FIGS. 1 and 2, one or more hull centering devices 10 are arranged on a trolley-type lifted pedestal 11 on land according to conditions such as the size of the hull 14 to be handled. Here, the case of one unit will be described.
(2) With the left and right abutting members 12 and 13 of the guide clamping means 20 and 21 of the hull centering device 10 in the standby position, the hull 14 floating on the sea surface is in the left and right abutting members 12 and 13. The bogie type lifting vessel 11 is submerged in the sea using a winch or the like so that the bogie type raising vessel 11 is stopped at a position where the hull 14 is sandwiched.
[0022]
(3) The operator 86 on the hull 14 operates the hull 14 so that the hull 14 approaches the manual handle 79, and then the operator 86 turns the manual handle 79, and the synchronous drive means 22 controls the left and right The contact members 12 and 13 are gradually reduced from the standby position so as to face the both sides (port 15 and starboard 16) of the hull 14, and initially the right contact member 13 is reduced while contacting the starboard 16, and finally. The left and right abutting members 12 and 13 are centered with both hulls 14 sandwiched between them.
(4) With the left and right abutting members 12 and 13 lightly abutting the port 15 and starboard 16, the trolley type lifting platform 11 is lifted from the sea to the land. 1 and 2, the lowermost portion 25 of the hull 14 is supported on the upper surface of a wood block 26 that is mounted on the bogie-type retraction vessel 11 at a predetermined interval. .
(5) For example, the hull 14 on the trolley-type lifted pedestal 11 lifted on land is repaired by, for example, painting the hull 14 while being sandwiched between the left and right contact members 12 and 13.
[0023]
(6) When the predetermined repair work is completed, the hull 14 pulls the cart-type lifting platform 11 into the sea with a slight gap between the left and right contact members 12 and 13.
(7) When the lowermost portion 25 of the hull 14 is separated from the upper surface of the board 26 due to buoyancy, the operator 86 on the hull 14 turns the manual handle 79 to bring the left and right contact members 12 and 13 to the standby position. return.
When painting on land (or removing barnacles, etc.), the left and right abutting members 12 and 13 come into contact with the left and starboards 15 and 16 of the hull 14 to perform painting (or removal). If not, after fixing the hull 14 with a separate fall prevention means, the manual operation chain 75 is operated to increase the gap between the left and right contact members 12 and 13 and the left and starboards 15 and 16, The portion can be painted (or removed).
[0024]
[0025]
In the above embodiment, the synchronous drive means 22 is driven by the manual handle 79. However, instead of the manual handle 79, an electric, hydraulic or pneumatic drive means may be provided.
Each arm is composed of a cylindrical arm body having a rectangular cross section disposed in the middle portion and a pair of plate members forming bearing portions (or pin portions) disposed at both ends of the arm body, but is not limited thereto. Other structures, for example, a solid arm body may be integrally provided with bearing portions (or pin portions) at both ends.
The case where one hull centering device 10 is mounted on the trolley-type lifting platform 11 has been described. However, the present invention is not limited to this, and the size and weight of the hull 14 and the size of the trolley-type lifting platform 11 are considered. Two or more units can be provided.
[0026]
【The invention's effect】
In the hull centering device according to claims 1 to 3, the left and right abutting members of the pair of link-type guide holding means provided on each of the pair of vertical fixing bases can be expanded and contracted in the horizontal direction. Since the hull can be centered in the center of the trolley-type lifting stern while sandwiching both sides, the operating force can be reduced, the expansion / contraction stroke can be increased, and the size can be reduced.
In particular, in this hull centering device, since the screw shaft or the synchronous sprocket can be driven to perform the synchronous operation, the drive mechanism can be simplified.
In the hull centering device according to claim 2, since the pair of guide clamping means can be operated by operating a manual handle provided on one moving upper arm, the operator can easily operate on the hull. it can.
In the hull centering device according to the third aspect of the invention, for example, when the cart-type lifting platform is on land, the manual operation chain can be operated at the fixed position, so that the operability is improved.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a hull centering device according to an embodiment of the present invention.
FIG. 2 is a plan view of the hull centering device.
FIG. 3 is a side sectional view of the hull centering device.
FIG. 4 is a right cross-sectional view of the hull centering device.
FIG. 5 is a left-side front sectional view of the hull centering device.
6A to 6F are cross-sectional views taken along arrows AA to A-F in FIG. 4, respectively.
[Explanation of symbols]
10: Hull centering device, 11: Carriage-type lifting platform, 12: Left abutting member, 13: Right abutting member, 14: Hull, 15: Port, 16: Starboard, 17: Mounting stand, 18, 19: Vertical Fixed base, 20, 21: Guide clamping means, 22: Synchronous drive means, 23: Wheel, 24: Bogie frame, 25: Bottom part, 26: Wood block, 28, 29: Third pin, 30, 31: No. 4 pins, 32, 33: fixed upper arm, 34, 35: fixed lower arm, 36, 37: first pin, 38, 39: second pin, 40, 41: movable upper arm, 42 43: movable lower arm, 44, 45: fifth pin, 46, 47: sixth pin, 48, 49: connecting vertical arm, 50, 51: extension, 52, 53: pin, 54, 55 : Nut portion, 56 to 59: bearing, 60, 61: screw shaft, 62, 63: Sprocket, 64: synchronous chain, 65: shaft coupling, 66: coupling shaft, 67: shaft coupling, 68: bevel gear shaft, 69: bearing, 70: large bevel gear, 71: small bevel gear, 72: bevel gear shaft, 73, 74 : Bearing, 75: manually operated chain, 76: ninth sprocket, 77: eighth sprocket, 78: bracket, 79: manual handle, 80: rotating shaft, 81: first sprocket, 82: first chain , 83: second chain, 84: third chain, 85: fourth chain, 86: operator, 87, 88: stopper, 89: chain receiver, 90: gear box, 91: fixing pin, 92: chain

Claims (3)

A pair of left and right abutting members that are mounted on and used on a trolley-type hoisting pedestal and that are arranged opposite to each other and that are horizontally expanded and contracted, sandwich the hull at the center of the trolley-type hoisting pedestal. In the hull centering device that centers
A mounting base mounted on the bogie type lifting platform;
A pair of vertical fixing bases provided opposite to both ends of the mounting base;
A pair of link-type guide holding means provided on each of the pair of vertical fixing bases and provided with the left and right abutting members capable of expanding and contracting in the width direction of the hull;
A synchronous drive means for simultaneously driving the pair of guide clamping means,
Each of the pair of guide clamping means is
The upper and lower arms of the movable side, one end of which is pivotally supported by the first and second pins respectively above and below the left and right contact members;
An upper side and a lower arm on one side of the vertical fixing table, each of which is pivotally supported by third and fourth pins, respectively;
The other ends of the fixed-side upper arm and the movable-side upper arm are pivotally supported at the upper end by a fifth pin, and the other ends of the fixed-side lower arm and the movable-side lower arm are the lower-end portions. And a connecting vertical arm pivotally supported by a sixth pin ,
In addition, the synchronous drive means has an extension portion provided to extend to the other end of each of the pair of movable side lower arms, and is provided so as to be pivotally supported by the extension portion, and an internal thread is formed on the inner peripheral portion. And a pair of synchronous sprockets attached to each of the screw shafts, and a pair of synchronous sprockets attached to the respective screw shafts. A hull centering device, comprising: a synchronous chain hung on a sprocket . 2. The hull centering device according to claim 1 , wherein a manual handle is provided on one movable upper arm of the pair of guide clamping means, and the first sprocket and the first pin provided on the manual handle are provided on the first pin. A first chain that connects the second sprocket provided, a second chain that connects the third sprocket provided on the first pin and the fourth sprocket provided on the fifth pin A third chain for connecting a fifth sprocket provided on the fifth pin and a sixth sprocket provided on the third pin, and a seventh sprocket provided on the third pin And a fourth chain connecting the vertical fixing base and an eighth sprocket attached to a bevel gear shaft rotatably provided on the vertical fixing base, a first bevel gear provided on the bevel gear shaft Hull centering device, characterized in that it comprises connection shaft second bevel gear is mounted which meshes, and a shaft coupling for connecting the screw shaft and the connecting shaft. 3. The hull centering device according to claim 2 , wherein a ninth sprocket is provided on the bevel gear shaft, and a manual operation chain is provided around the ninth sprocket.

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