JP4247620B2 - Rudder plate installation / removal device - Google Patents

Description

  The present invention relates to a steering plate attachment / detachment device for attaching and detaching a steering plate when inspecting and repairing engine parts of a ship.

  Ships are legally inspected and repaired for engine parts such as engines, propeller shafts, propellers, and couplings once every five years. This inspection is usually performed in a dry dock, and is conducted under the guidance of an inspection engineer using the period from entry to departure.

  FIG. 13 is a perspective view for explaining a conventional operation of attaching and removing a steering plate. The hull 200 is supported by a number of blocks 202, 202... (Only one block is shown in FIG. 13) and is used as a dry dock. It is fixed. The rudder plate 204 is swingably connected to a ladder horn 206 provided at the rearmost portion of the hull 200 via a shaft 208, and a propeller 210 is provided in front of the rudder plate 204. The propeller 210 is removed from the hull 200 after the rudder plate 204 is removed from the hull 200.

  Next, the procedure for removing the steering plate 204 will be described below.

(I) A plurality of suspension pieces 212, 212... Are welded to the lower surface of the hull 200 and the upper surface of the rudder plate 204.

(II) Hanging pieces 212, 212... Of the hull 200 and hanging pieces 212, 2 of the rudder plate 204
Are connected by a plurality of chain blocks 214, 214.

  (III) The shaft 208 of the rudder plate 204 is pulled out from the rudder plate 204 from the inside of the hull 200, and the rudder plate 204 is suspended by a plurality of chain blocks 214, 214.

(IV) Lower the rudder plate 204 onto the floor of the dry dock while extending the length of the plurality of chain blocks 214, 214.

With the above operation, the operation of removing the rudder plate 204 is completed. The rudder plate 204 lowered onto the floor of the dry dock is placed on a carriage and transported to an inspection and maintenance place of the rudder plate 204. At the inspection and maintenance place, shells and the like attached to the surface of the rudder plate 204 are removed, a destructive inspection is performed, and repainting is performed after the inspection is completed. The rudder plate 204 is attached by (I) to (
IV) is removed in the reverse order, and finally the welded suspension pieces 212, 212 are
Work is completed by removing… and painting this part.

  By the way, when the amount of drainage becomes a large ship of 10,000 tons or more, the rudder plate 204 becomes large and heavy, and therefore, the operations (III) and (IV) require a lot of time and labor.

Conventionally, various methods have been implemented as attaching and detaching a rudder plate in a large vessel, but as described above, a method of using a plurality of chain blocks is generally applied. Moreover, after lifting the rudder plate using the auxiliary trolley of the Goliath crane, a work method has been proposed in which a rudder plate balance is set on the main trolley and the load on the rudder plate is moved to this rudder plate balance (for example, Patent Document 1).
JP-A-60-203593

  However, in the conventional work method using a chain block, for example, when 4 to 5 workers engage in a work plate of about 15 tons, there is a problem that it takes about 4 days to install and remove it. . Further, in this work method, since the rudder plate is lowered from the hull with an unstable state, the rudder plate may collide with the hull when descending, and the rudder plate and the hull may be damaged.

  In addition, in the rudder plate mounting method of Patent Document 1, since there are many operations for adjusting the position of the rudder plate in the air, it is likely to become unstable, and the work procedure is complicated, so that a high level of skill is required for the engaged worker. There was a point.

  The present invention has been made in view of such circumstances, and can be easily performed in a short time without damaging the rudder plate or the hull when the rudder plate is attached to or detached from the hull. An object of the present invention is to provide a steering plate attachment / detachment device.

In order to achieve the above object, the invention according to claim 1 is a rudder plate mounting / removal device provided with a rudder plate holding unit used for mounting and removing a rudder plate provided on the hull of a ship. The rudder plate holding unit is provided on the left and right sides of the rudder plate so as to be movable in a direction to sandwich the side surface of the rudder plate and a direction to release the rudder plate. The first moving member is a pair of upper and lower first moving members respectively provided above and below the rudder plate, the cylinder device provided on the pair of upper and lower first moving members, and the tip of the piston of the cylinder device A steering plate clamping pad that is attached to the steering plate and pressed against the steering plate, and a pair of second pads provided at the lower portion of the unit main body and movably in directions toward and away from each other. A moving member, and having a support member for supporting the lower surface abuts on the lower surface of the rudder plate with provided on the pair of the second moving member.

  According to the first aspect of the present invention, when the rudder plate is removed from the hull, the rudder plate is released from holding the pair of upper and lower first moving members and the pair of second moving members of the rudder plate holding unit. Move in advance in the direction. In this state, first, a steering plate is inserted into the gap between the opposed moving members. Next, the pair of upper and lower first moving members and the second moving member are moved in a direction in which the steering plate is sandwiched, and the movement in the direction is stopped when the steering plate approaches a predetermined distance. Next, the piston of the cylinder device provided on the pair of upper and lower first moving members is extended, and a rudder plate clamping pad attached to the tip of the piston is pressed against the side surface of the rudder plate so that these rudder plates are sandwiched. The side of the rudder plate is clamped by the pad for use. Further, the support member provided on the second moving member is supported by contacting the lower surface of the steering plate. The rudder plate holding unit can be attached to the rudder plate by the above operation. In this state, pull out the rudder shaft from the hull and remove the rudder plate from the hull.The rudder plate is held by the rudder plate holding unit in a state where the rudder plate is prevented from falling and falling. It can be carried out easily and in a short time without damaging the rudder plate or hull. On the other hand, when the rudder plate is attached to the hull, the rudder plate is held by the rudder plate holding unit as described above, and in this state, the rudder plate is positioned at the hull attachment position. Next, the shaft is inserted into the rudder plate, and the rudder plate is attached to the hull via the shaft. As a result, the steering plate can be attached easily and in a short time without damaging the steering plate or the hull.

In order to achieve the above object, the invention as set forth in claim 2 is a rudder plate mounting / removal device provided with a rudder plate holding unit used for mounting and removing a rudder plate provided on the hull of a ship. The rudder plate holding unit is provided on the left and right sides of the rudder plate so as to be movable in a direction to sandwich the side surface of the rudder plate and a direction to release the rudder plate. The first moving member is a pair of upper and lower first moving members respectively provided above and below the rudder plate, the cylinder device provided on the pair of upper and lower first moving members, and the tip of the piston of the cylinder device And an arm member provided with a rudder plate clamping pad that is swingably provided on the pair of upper and lower moving members and pressed against the side surface of the rudder plate, and provided at a lower portion of the unit main body. And a pair of second moving members provided so as to be movable in a direction toward and away from each other, and provided on the pair of second moving members and in contact with the lower surface of the rudder plate to support the lower surface And a supporting member.

  According to the second aspect of the present invention, when the rudder plate is removed from the hull, the rudder plate is released between the pair of upper and lower first moving members and the pair of second moving members of the rudder plate holding unit. Move in advance in the direction. In this state, first, a steering plate is inserted into the gap between the opposed moving members. Next, the pair of upper and lower first moving members and the second moving member are moved in a direction in which the steering plate is sandwiched, and the movement in the direction is stopped when the steering plate approaches a predetermined distance. Next, the piston of the cylinder device provided on the pair of upper and lower first moving members is extended, the arm member attached to the tip of the piston is swung in the rudder plate clamping direction, and the entire length of the arm member is extended over the longitudinal direction. The attached rudder plate clamping pad is pressed against the side surface of the rudder plate. Thereby, the side surface of the steering plate can be clamped by the arm member via the steering plate clamping pad.

  By supporting the arm member in a swingable manner in this way, the entire surface of the steering plate clamping pad of the arm member can be brought into contact with the side surface of the rudder plate along the inclined surface of the side surface of the rudder plate. Further, the support member provided on the second moving member is supported by contacting the lower surface of the steering plate. In this state, pull out the rudder shaft from the hull and remove the rudder plate from the hull.The rudder plate is held down by the rudder plate holding unit and prevented from falling. It can be carried out easily and in a short time without damaging the rudder plate or hull. On the other hand, when the rudder plate is attached to the hull, the rudder plate is held by the rudder plate holding unit as described above, and in this state, the rudder plate is positioned at the hull attachment position. Next, the shaft is inserted into the rudder plate, and the rudder plate is attached to the hull via the shaft. As a result, the steering plate can be attached easily and in a short time without damaging the steering plate or the hull.

  According to a third aspect of the present invention, the support member includes a cylinder device provided in the pair of second moving members, and a fork provided at a tip of a piston of the cylinder device and supporting a lower surface of the rudder plate. And a member.

  According to the third aspect of the present invention, the distance between the fork member and the pair of upper and lower first moving members can be adjusted by adjusting the height position of the fork member with the piston. Therefore, by shortening the distance in the case of a small rudder, and by taking a long distance in the case of a large rudder, it is possible to stably hold rudder plates of different sizes. Further, by providing a block on the upper surface of the fork member, it is possible to provide a rudder plate holding unit effective for holding a rudder plate in which fins are provided in the lower portion in order to improve steering efficiency. If the fork member has a flat plate shape, the fin is directly supported by the fork member. Therefore, if the rudder plate is heavy, the fins are deformed or damaged by the weight of the rudder plate itself. Therefore, a block is provided on the upper surface of the fork member, and this block is brought into contact with the lower surface of the rudder plate, thereby avoiding fins and supporting the lower surface of the rudder plate. Thereby, deformation and damage of the fin can be prevented.

  The invention described in claim 4 is characterized in that the rudder plate holding unit is provided on a table via a first elevating mechanism and a rotating mechanism.

  According to invention of Claim 4, it can apply to attachment / detachment of the steering plate in a high place by providing a steering plate holding | maintenance unit in a table via a 1st raising / lowering mechanism. Further, by providing the rudder plate holding unit on the table via the turning mechanism, the rudder plate removed in the vertical posture can be turned 90 ° to change the posture to the horizontal posture. This is advantageous when the rudder plate is placed on a dock floor or the like.

  According to a fifth aspect of the present invention, the table of the rudder plate holding unit is provided on the traveling carriage via a second lifting mechanism and can be moved horizontally with respect to the traveling carriage by an XY direction moving mechanism. It is characterized by being provided.

  According to the fifth aspect of the present invention, since the table of the steering plate holding unit is mounted on the traveling carriage, the steering plate holding unit can be easily moved to the attachment / detachment position of the steering plate. Further, since the rudder plate holding unit is installed on the traveling carriage via the second lifting mechanism, it is suitable for mounting and removing the rudder plate at a height position that cannot be handled by the first lifting device. Furthermore, the horizontal position of the steering plate holding unit can be finely adjusted by horizontally moving the table by the XY direction moving mechanism at the position where the traveling carriage is stopped.

  The invention according to claim 6 is characterized in that the traveling carriage of the rudder plate holding unit has a plurality of legs to which wheels that run on rails are attached, and the plurality of legs are attached to the carriage body. The cart body is provided on the plurality of leg portions so as to be movable up and down via a third lifting mechanism.

  According to the sixth aspect of the present invention, since the carriage main body is provided on the leg portion with wheels traveling on the rail so as to be movable up and down via the third lifting mechanism, the first and second lifting mechanisms cannot be used. It is suitable for attaching and removing the rudder plate at the height position. In addition, when a wooden board is installed between two rails laid on the dock floor, the main body of the truck traveling on the rail is prevented from colliding with the wooden board by raising the main body of the truck. it can.

  In the invention according to claim 7, the traveling carriage of the steering plate holding unit has a plurality of legs to which wheels are attached, and the plurality of legs are attached to the carriage main body via a steering mechanism. The cart body is provided on the plurality of legs so as to be movable up and down via a third lifting mechanism, and the third lifting mechanism has a roller abutting and supported on the lower surface of the cart body at the tip of the piston. The cylinder device is rotatably supported, and the cylinder device is erected on a wheel support portion that supports the wheel.

  According to the seventh aspect of the present invention, since the carriage main body is provided on the leg portion with wheels so as to be freely raised and lowered via the third raising and lowering mechanism, the height can not be accommodated by the first and second raising and lowering mechanisms. It is suitable for attaching and removing a certain rudder plate. Moreover, when a traveling trolley passes so as to straddle the board installed on the floor of the dock, it is possible to prevent the carriage body from colliding with the board by raising the carriage body with respect to the legs. Furthermore, since the lower surface of the cart body is supported by a roller attached to the tip of the piston of the cylinder device, even if the leg is rotated with respect to the cart body by the steering mechanism, the friction generated between the rollers is not generated by the roller. It is reduced by turning. Therefore, the steering operation by the steering mechanism can be performed smoothly.

  As described above, according to the steering plate mounting / removal device of the present invention, the piston of the cylinder device provided on the pair of upper and lower first moving members of the steering plate holding unit is extended and attached to the tip of the piston. The rudder plate clamping pad is pressed against the side surface of the rudder plate, the side surface of the rudder plate is clamped by these rudder plate clamping pads, and the support member provided on the second moving member is attached to the rudder plate. Since it is supported by being brought into contact with the lower surface, the operation of attaching and removing the steering plate can be carried out easily and in a short time without damaging the steering plate or the hull.

  Hereinafter, preferred embodiments of a steering plate mounting / removing device according to the present invention will be described in detail with reference to the accompanying drawings.

  The steering plate mounting / removal device 10 according to the embodiment shown in FIG. 1 mainly includes a traveling carriage 12, an attachment member 14, and a steering plate holding unit 16. The traveling carriage 12 has a carriage body 20 that travels on endless tracks 18 and 18. As the carriage body 20 travels, the rudder plate holding unit 16 is moved to the mounting / removal position of the rudder plate 204.

  The attachment member 14 is formed in a disc shape, and a shaft 22 indicated by a broken line protruding from the center of the back surface is pivotally supported by a lifting plate 24 via a bearing (not shown). Further, as shown in FIG. 2, a motor (rotation mechanism) 26 is fixed to the upper right corner of the lifting plate 24, and a gear 30 attached to the motor shaft 28 of the motor 26 is formed on the peripheral edge of the attachment member 14. The gear teeth 15 are engaged with each other. Therefore, when the gear 30 is rotated by the driving force of the motor 26, the attachment member 14 meshed with the gear 30 rotates in the direction of the arrow θ about the shaft 22, and the steering plate holding that is detachably attached to the attachment member 14. The unit 16 rotates. The motor 26 is a motor with a brake, and has a structure in which a brake is applied so as not to rotate from the position when the rotation is stopped.

  The elevating plate 24 is formed in a rectangular shape, and a linear motion guide block 32 is fixed to the back surface of the elevating plate 24 along the vertical direction. The block 32 is fitted to a guide rail 36 of a linear motion guide fixed along the vertical direction on the front surface of the partition plate 34. Thereby, the elevating plate 24 is supported so as to be movable up and down with respect to the partition plate 34. A hydraulic cylinder device (first lifting mechanism) 38 is fixed to the front surface of the partition plate 34, and the hydraulic cylinder device 38 is fixed in a posture in which the piston 40 extends and contracts in the vertical direction. The tip of the piston 40 is fixed to a connecting member 42 fixed to the back surface of the elevating plate 24. Therefore, when the piston 40 is expanded and contracted, the attachment member 14 moves up and down in the direction of the arrow Z via the lifting plate 24, and the rudder plate holding unit 16 that is detachably attached to the attachment member 14 moves up and down.

  The partition plate 34 is erected on a rectangular table 44 as shown in FIG. 1, and the table 44 is supported by a known XY direction moving mechanism 46. The XY direction moving mechanism 46 includes a moving table 48 in which a feed screw mechanism and a linear motion guide for moving the table 44 in the X direction, and a feed screw mechanism and a linear motion guide for moving the movable table 48 in the Y direction. And a fixed table 50 having a built-in structure. By moving the moving table 48 in the Y direction with respect to the fixed table 50 and moving the table 44 in the X direction with respect to the moving table 48, the table 44 can be moved in the XY direction, that is, in a plane. Further, the position of the table 44 in the horizontal plane can be finely adjusted by controlling the movement amount in the XY direction by a control unit (not shown).

  The fixed table 50 is mounted on the carriage main body 20 through a pair of parallel expansion / contraction mechanisms 52 and 52 and a hydraulic cylinder device (second lifting mechanism) 54 so as to be movable up and down. The parallel expansion / contraction mechanism 52 is an X-shaped link body that is pivotally supported by a pin 58 at the center, and the lower end portion of the link body is supported by the bearing portions 62A and 62B of the carriage body 20 via the pins 60 and 60. At the same time, the upper end portions thereof are supported by the bearing portions 66A and 66B of the fixed table 50 via the pins 64 and 64. Further, the bearing portion 62B is slidably fitted along a guide groove 68 formed on the upper surface of the carriage body 20, and the bearing portion 66B facing the bearing portion 62B in the vertical direction is similarly formed on the fixed table 50. It is slidably fitted along a guide groove (not shown) formed on the lower surface. These guide grooves 64 are formed in a direction that allows the link body to expand and contract with the pin 54 as a fulcrum. Therefore, during the expansion / contraction operation of the link body using the pin 54 as a fulcrum, the bearing portion 62B slides along the guide groove 68, and the bearing portion 66B slides along the guide groove (not shown). Is moved up and down with respect to the cart body 20.

  The hydraulic cylinder device 54 is swingably connected to the upper surface of the cart body 20 via a pin 70, and the tip end portion of the piston 56 is also swingably connected to the lower surface of the fixed table 50 via a pin (not shown). ing. When the piston 56 is expanded and contracted, the fixed table 50 moves up and down while being supported and guided by the parallel expansion and contraction mechanisms 52 and 52, and the hydraulic cylinder device 54 is moved to follow the lifting and lowering operation. Swing with respect to 50. Therefore, the raising and lowering operation of the fixed table 50 is performed smoothly.

  On the other hand, on the front surface of the attachment member 14, four connecting members 72 (only one is shown in FIG. 1) protrude in the horizontal direction. The connecting member 72 is a short rectangular tube, and a bolt insertion hole (not shown) is formed at the tip thereof. As shown in FIG. 2, the connecting member 72 is fitted into square tubular fitting members 76, 76... Provided at the four corners of the unit main body 74 of the steering plate holding unit 16. The fitting member 76 is similarly formed with a bolt insertion hole (not shown). Both the bolt insertion holes are matched, a bolt (not shown) is inserted into both bolt insertion holes, and then tightened with a nut (not shown). Thereby, the steering plate holding unit 16 is detachably connected to the attachment member 14.

  The unit main body 74 of the rudder plate holding unit 16 is configured by connecting a pair of left and right vertical frames 78 and 78 and three guide frames 80, 82, and 84 arranged vertically in a frame shape. As shown in FIG. 3, the guide frame 80 supports the base ends of a pair of left and right clamping arms (upper pair of first moving members) 86, 86 slidably along the guide frame 80 in the horizontal direction. ing. The sandwiching arms 86 and 86 are screwed into threaded portions 88 and 88 that are threaded in the opposite directions of the screw rod of the screw feeder. Therefore, when the screw rod is rotated by the motor 90 of the screw feeding device, the clamping arms 86 and 86 release the direction in which the steering plate 204 is clamped and the clamping of the steering plate 204 by the reverse feeding action of the screw portions 88 and 88. Move in the direction you want.

  Similarly, the base frame of the pair of left and right clamping arms (the pair of first moving members on the lower side) 92 and 92 is slidably supported along the guide frame 82 in the horizontal direction. Has been. Similarly, the sandwiching arms 92 and 92 are screwed into threaded portions 94 and 94 that are formed by screw threads of the screw feeding device that are reversely threaded. Therefore, when the screw rod is rotated by the motor 96 of the screw feeder, the clamping arms 92 and 92 release the rudder plate 204 and the direction in which the rudder plate 204 is clamped by the reverse feed action of the screw portions 94 and 94. Move in the direction you want.

  Further, as shown in FIG. 4, two cylinder devices 98, 98 are fixed in the horizontal direction on the inner side of each clamping arm 86, 92. A rudder plate clamping pad 104 is swingably attached to the tip of the piston 100 of the cylinder device 98 via a pin 102. The rudder plate clamping pad 104 is attached to the rudder plate 204 by an extension operation of the piston 100. The entire surface is brought into contact with the side surface of the rudder plate 204 while being pressed against the side surface and following the inclined side surface of the rudder plate 204 by swinging support by the pins 102. The steering plate clamping pad 104 is composed of an iron plate 106 supported by the pin 102 and a soft member 108 such as rubber, plastic, or felt attached to the iron plate 106, and the soft member 108 is provided on the side surface of the steering plate 204. By the press contact, the rudder plate 204 is prevented from being scratched, and the adhesion is improved.

  3, similarly, the base end portions of a pair of left and right arms (a pair of second moving members) 110 and 110 are slidably supported along the guide frame 84 in the horizontal direction. . Similarly, the arms 110 and 110 are also screwed into threaded portions 112 and 112 that are formed by screw threads of the screw feeding device that are reversely threaded. Therefore, when the screw rod is rotated by the motor 114 of the screw feeder, the arms 110 and 110 are held in the direction in which the rudder plate 204 is clamped and the direction in which the rudder plate 204 is released by the reverse feed action of the screw portions 112 and 112. Move to.

  Two cylinder devices 116, 116 are fixed upward on the upper surfaces of these arms 110, 110, respectively. A fork (fork member) 120 formed in a crank shape is attached to the tip of the piston 118 of the cylinder device 116, and the fork 120 is brought into contact with the lower surface of the rudder plate 204 by the extension operation of the piston 118.

  With the configuration of the steering plate holding unit 16 described above, the side surface of the steering plate 204 is supported by the eight steering plate clamping pads 104 provided on the pair of upper and lower clamping arms 86, 86, 92, 92. The lower surface of the rudder plate 204 is supported by four forks 120 provided on the arms 110 and 110. Thereby, the rudder plate 204 can be stably held by the rudder plate holding unit 16, and the rudder plate holding unit 16 is rotated by 90 ° via the attachment member 14 by the motor 26 shown in FIG. 1. In addition, the rudder plate 204 can be held without dropping from the rudder plate holding unit 16. Further, since the motor 26 is a motor with a brake, the brake is applied at that position, and the steering plate holding unit 16 is held at a position rotated by 90 °.

  Next, the operation of the steering plate mounting / removal device 10 configured as described above will be described.

[Rudder plate removal work]
First, the holding arms 86, 86, 92, 92 and the arms 110, 110 are moved in advance in the direction to release the holding of the rudder plate 204, and the piston 56 of the hydraulic cylinder device 54 is extended to move the table 44. The rudder plate holding unit 16 is positioned in advance at a height position where the rudder plate 204 can be clamped by raising it.

  Next, the traveling carriage 12 is caused to travel, and the rudder plate holding unit 16 is moved to a position facing the rear portion of the rudder plate 204. Next, the table 44 is horizontally moved by the XY direction moving mechanism 46 to finely adjust the horizontal position of the rudder plate holding unit 16 with respect to the rudder plate 204, and the hydraulic cylinder device 38 is expanded and contracted to steer the rudder plate with respect to the rudder plate 204. Finely adjust the vertical position of the holding unit 16. Thereafter, the traveling carriage 12 can be moved forward toward the rudder plate 204, the side surface of the rudder plate 204 can be pinched by the holding arms 86, 86, 92, and 92, and the lower surface of the rudder plate 204 can be supported by the fork 120. When traveling forward, the traveling carriage 12 is stopped.

  Next, the clamping arms 86 and 86 and the clamping arms 92 and 92 are moved in the direction in which the steering plate 204 is clamped by the motors 90 and 96 of the screw feeding device. And the movement is stopped in the position immediately before pinching. Next, the piston 100 of each cylinder device 98 is extended, and the eight rudder plate clamping pads 104 are pressed against the side surface of the rudder plate 204. At the same time, the arms 110 and 110 are moved by the motor 114 of the screw feeder in a direction to sandwich the rudder plate 204 and stopped when approaching the rudder plate 204. Thereafter, the piston 118 of each cylinder device 116 is extended to bring the four forks 120 into contact with the lower surface of the rudder plate 204. Accordingly, the rudder plate 204 is stably held by the rudder plate holding unit 16.

  Thereafter, the rudder plate holding unit 16 is slightly raised by the hydraulic cylinder device 38 to float the rudder plate 204, and the shaft 208 (see FIG. 6) of the rudder plate 204 is pulled out from the inside of the hull 200. As a result, the rudder plate 204 is removed from the hull 200. Thereafter, when the traveling carriage 12 is moved backward and the rudder plate 204 is completely separated from the hull 200, the piston 56 of the hydraulic cylinder device 54 is contracted to move the rudder plate holding unit 16 downward and the motor 26 moves 90 °. The rudder plate 204 is turned sideways and is placed on a sleeper (not shown) or a transport cart arranged on the dock floor. Thereby, a series of rudder plate removal operations can be performed easily and in a short time without damaging the rudder plate 204, the hull 200, and the like.

[Rudder plate installation work]
The rudder plate 204 that has been inspected and repaired is placed on a sleeper or a carriage. The rudder plate 204 is held by the rudder plate holding unit 16 by executing the reverse procedure of the previous removing operation. In this state, the rudder plate holding unit 16 is raised by the hydraulic cylinder device 54 and rotated 90 ° by the motor 26 to stand. Next, after the rudder plate 204 is transported to the mounting position of the hull 200 by the traveling carriage 12 and the horizontal position and the vertical position are finely adjusted by the XY movement mechanism 46 and the hydraulic cylinder device 38, the rudder plate is moved. A shaft 208 is attached to 204 and the rudder plate 204 is attached to the hull 200. Then, the piston 100 of each cylinder device 98 is contracted to retract the eight rudder plate clamping pads 104 from the side surface of the rudder plate 204, and the clamping arms 86 and 86 and the clamping arms 92 and 92 are screw feeding devices. The motors 90 and 96 are moved in the direction to release the steering plate 204. At the same time, the piston 118 of each cylinder device 116 is extended to retract the four forks 120 from the lower surface of the rudder plate 204, and the arms 110 and 110 are clamped by the motor 114 of the screw feeder. Move in the direction to cancel. The operation of attaching the rudder plate 204 is completed by the above operation. Therefore, the operation of attaching the rudder plate 204 can be carried out easily and in a short time without damaging the rudder plate 204 and the hull 200.

  FIG. 5 shows a diagram in which a block 122 is fixed to the upper surface of the upper fork 120 out of two forks 120, 120 that are vertically stacked, and the lower surface of the rudder plate 204 is supported via the block 122. The support method using the block 122 is suitable for supporting the rudder plate 204 having fins 216 attached to the lower portion as shown in FIGS. That is, as shown in FIG. 5, the block 122 avoids the fins 216 and comes into contact with the lower surface of the rudder plate 204. Accordingly, the lower surface of the rudder plate 204 is supported by the block 122 without the fins 216 being damaged by the fork 120. When the block 122 is not used, the fins 216 are directly supported by the fork 120. Therefore, when the rudder plate 204 is heavy, the fins 216 are deformed or damaged by the weight of the rudder plate 204 itself. To do. Therefore, damage to the fins 216 can be prevented by supporting the lower surface of the rudder plate 204 via the block 122 as shown in FIG.

  FIG. 8 is a plan view showing another embodiment of the holding arms 86 and 92 shown in FIG.

  The structure shown in FIG. 8 includes a moving piece (a pair of upper and lower first moving members) 124, a cylinder device 126, an arm (arm member) 128, and the like.

  The moving pieces 124 and 124 are supported by the guide frame 80 so as to be movable, and are screwed into the reverse screw portions 88 and 88 of the feed screw device, and sandwich the side surface of the steering plate 204 by the motor 90 of the feed screw device. The direction and the direction to release the steering plate are moved.

  The cylinder device 126 is swingably supported by the moving piece 124 via a pin 130, and the tip end portion of the piston 132 is pivotally supported by the center portion of the arm 128 via a pin 134.

  The arm 128 is formed to have a length substantially the same as the horizontal length of the side surface of the rudder plate 204, and a soft rudder plate clamping pad 136 is attached to substantially the entire inner surface of the arm 128. Further, the arm 128 is supported so that the base end portion thereof is swingable via a pin 138, and swings toward the side surface of the rudder plate 204 by the extension operation of the piston 132 of the cylinder device 126.

  According to the clamping structure shown in FIG. 8, the entire surface of the steering plate clamping pad 136 of the arm 128 can be brought into contact with the inclined surface of the side surface of the steering plate, so that the steering plate 24 can be held more stably. Can do.

  FIG. 9 shows a steering plate attaching / detaching device 140 according to another embodiment, and the same or similar members as those of the steering plate attaching / detaching device 10 shown in FIG. The description is omitted.

  The traveling carriage 142 of the steering plate attaching / detaching device 140 shown in FIG. 9 has four leg portions 148 (only three are shown in FIG. 9) to which the wheels 146 traveling on the rails 144 and 144 are attached. It is attached and configured.

  The upper portion of the leg portion 148 is slidably disposed in an opening (not shown) formed in a corner portion of the cart body 150 and is slidable in a vertical direction by a linear motion guide 152 installed in the corner portion of the cart body 150. It is supported by. In addition, a rack 154 is provided in the leg portion 148 along the longitudinal direction of the leg portion 148, and a pinion 156 is engaged with the rack 154. The pinion 156 is attached to a motor shaft 159 of a motor (third lifting mechanism) 158 fixed to the carriage main body 150. Therefore, when the rotational force of the motor 158 is transmitted to the rack 154 via the pinion 156, the rack 154 is moved up and down. Thereby, the cart body 150 is moved up and down. The motor 158 is also a motor with a brake, and when the rotation is stopped, the motor shaft 159 is braked, so that the height of the carriage main body 150 is maintained at the height at the time of the stop.

  By raising the cart body 150 in this way, it is possible to cope with the mounting / removal of the rudder plate 204 at a height position that cannot be handled by the hydraulic cylinder devices 38 and 54 alone. Further, by raising the carriage main body 150, it is possible to prevent the carriage main body 150 from colliding with the board 202 installed between the two rails 144 and 144.

  FIG. 10 shows a steering plate attaching / detaching device 160 according to another embodiment, and the same or similar members as those of the steering plate attaching / detaching device 10 shown in FIG. The description is omitted.

  The traveling carriage 162 of the steering plate attaching / detaching device 160 shown in FIG. 10 is configured by attaching four leg portions 166 to which wheels 164 are attached (only three are shown in FIG. 10) to the carriage main body 168. Yes.

  The upper portion of the leg portion 166 is disposed through a sleeve bearing 170 provided at a corner opening of the carriage main body 150, and is supported by the sleeve bearing 170 so as to be rotatable and slidable in the vertical direction.

  In addition, the traveling carriage 162 is provided with a steering mechanism (steering mechanism) 172. In the steering mechanism 172, both ends of the tie rod 176 are pivotally supported via pins 178 on brackets 174 and 174 connected to the upper ends of the two legs 166 and 166 as shown in FIG. Further, a U-shaped engagement portion 180 is formed at the center of the tie rod 176, and a lever 182 is fitted to the engagement portion 180. The lever 182 is attached to the piston 187 of the cylinder device 186 that is swingably supported by the carriage main body 168 via a pin 184. When the piston 187 expands and contracts, the lever 182 pushes the engaging portion 180, whereby the tie rod 176 moves in the left-right direction. As a result, turning force can be applied to the two leg portions 166 and 166 via the brackets 174 and 174, so that the wheels can be directed in a desired traveling direction. Further, the lever 182 moves up and down along the U-shaped engaging portion 180 together with the cylinder device 186 during the expansion / contraction operation of the piston 187, so that the power of the cylinder device 186 can be smoothly transmitted to the tie rod 176.

  On the other hand, in the wheel cases (wheel support portions) 188, 188,... That support the wheels 164, hydraulic cylinder devices (third lifting mechanism) 190 are erected with the piston 191 facing upward. The upper end portion of each piston 191 is abutted and supported by the lower surface of the cart body 168. Therefore, the cart body 168 is moved up and down while being supported by the leg portions 166, 166. By raising the carriage main body 168 in this way, it is possible to cope with the attachment / detachment of the rudder plate 204 at a height position that cannot be handled only by the hydraulic cylinder devices 38 and 54. Further, by raising the carriage main body 168, it is possible to prevent the carriage main body 168 from colliding with the board 202.

  Further, in the hydraulic cylinder devices 190 and 190 on the two leg portions 166 and 166 side provided with the steering mechanism 172, a roller 194 is provided at the tip of the piston 191 as shown in FIG. The roller 194 is rotatably supported by a U-shaped holder 192 fixed to the tip of the piston 191 via a pin 196. Since the lower surface of the carriage main body 168 is supported by the roller 194, even if the leg portions 166 and 166 are rotated with respect to the carriage main body 168 by the steering mechanism 172, friction generated between the rollers 194 and 194 rotates. Is reduced. Therefore, the direction change by the steering mechanism 172 can be performed smoothly.

Whole structure figure showing the installation and removal device of a rudder plate of a 1st embodiment Perspective view of rudder plate holding unit The principal part expansion perspective view of the steering plate holding | maintenance unit shown in FIG. Top view of the steering plate holding unit shown in FIG. The principal part enlarged view which shows the state which supported the lower surface of the steering plate via the block Side view showing a state in which the rudder plate with fins is attached to the hull The perspective view which looked at the steering plate with a fin from the arrow direction of FIG. Top view showing another embodiment of a steering plate clamping arm Overall structural diagram showing the steering plate mounting / removal device of the second embodiment Whole structure figure showing the installation and removal device of a rudder plate of a 3rd embodiment The top view of the steering mechanism attached to the installation / removal device of the steering plate of FIG. FIG. 10 is a structural diagram of an essential part of the lifting mechanism attached to the steering plate attaching / detaching device of FIG. Explanatory drawing for demonstrating the removal attachment work of the steering plate conventionally implemented

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10,140,160 ... Steering plate attachment / detachment device, 12, 142, 162 ... Traveling carriage, 14 ... Attachment member, 16 ... Rudder plate holding unit, 20, 150, 168 ... Dolly body, 26 ... Motor, 38 ... Hydraulic cylinder device, 44 ... table, 46 ... XY direction moving mechanism, 52 ... parallel telescopic mechanism, 54 ... hydraulic cylinder device, 86, 92 ... clamping arm, 104 ... rudder plate clamping pad, 120 ... fork, 122 ... Block, 172 ... Steering mechanism, 204 ... Rudder plate

Claims (7)

In a steering plate mounting / removal device equipped with a steering plate holding unit used when mounting and removing a steering plate provided on the hull of a ship,
The rudder plate holding unit is
The unit body,
A pair of first moving members provided on the left and right sides of the rudder plate are provided on the left and right sides of the rudder plate so as to be movable in a direction to sandwich the side surface of the rudder plate and a direction to release the rudder plate. A pair of upper and lower first moving members respectively provided ;
A cylinder device provided on the pair of upper and lower first moving members;
A rudder plate clamping pad attached to the tip of the piston of the cylinder device and pressed against the rudder plate;
A pair of second moving members provided at a lower portion of the unit main body and movably in directions toward and away from each other;
A support member that is provided on the pair of second moving members and supports the lower surface by contacting the lower surface of the rudder plate;
A steering plate attaching / detaching device characterized by comprising: In a steering plate mounting / removal device equipped with a steering plate holding unit used when mounting and removing a steering plate provided on the hull of a ship,
The rudder plate holding unit is
The unit body,
A pair of first moving members provided on the left and right sides of the rudder plate are provided on the left and right sides of the rudder plate so as to be movable in a direction to sandwich the side surface of the rudder plate and a direction to release the rudder plate. A pair of upper and lower first moving members respectively provided ;
A cylinder device provided on the pair of upper and lower first moving members;
An arm member attached to a front end of a piston of the cylinder device and swingably provided on the pair of upper and lower moving members, and attached with a rudder plate clamping pad that is pressed against and contacted with a side surface of the rudder plate;
A pair of second moving members provided at a lower portion of the unit main body and movably in directions toward and away from each other;
A support member that is provided on the pair of second moving members and supports the lower surface by contacting the lower surface of the rudder plate;
A steering plate attaching / detaching device characterized by comprising: The support member is
3. A cylinder device provided in the pair of second moving members, and a fork member provided at a tip of a piston of the cylinder device and supporting a lower surface of the rudder plate. The installation / removal device for the steering plate as described in 1.   The steering plate mounting unit according to any one of claims 1, 2, and 3, wherein the steering plate holding unit is provided on a table via a first lifting mechanism and a rotation mechanism. Removal device.   The table of the rudder plate holding unit is provided on the traveling carriage via a second elevating mechanism, and is provided so as to be horizontally movable with respect to the traveling carriage by an XY direction moving mechanism. The steering plate mounting / removal device according to claim 4.   The traveling carriage of the rudder plate holding unit has a plurality of legs to which wheels that run on rails are attached. The plurality of legs are attached to the carriage body, and the carriage body is the plurality of legs. The steering plate mounting / removal device according to claim 5, wherein the steering plate mounting / removal device is provided to be movable up and down via a third lifting mechanism.   The traveling carriage of the rudder plate holding unit has a plurality of legs to which wheels are attached, and the plurality of legs are attached to the carriage main body via a steering mechanism, and the carriage main body is the plurality of legs. A cylinder device in which a roller supported by the lower surface of the carriage main body is rotatably attached to the tip of the piston. The rudder plate mounting / removal device according to claim 5, wherein the cylinder device is erected on a wheel support portion that supports the wheel.

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