JP2005231485A - Traveling type working unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traveling type working scaffold with easy operation and simple attitude adjustment of a working base, in which movement speed in height direction (Z direction) is fast and a driving part is not sunk. <P>SOLUTION: The traveling type working unit is provided with: a traveling rail 16 laid on a side wall 14 of a vessel dock 10; a truck 30 travelable along the traveling rail 16; a guide post 34 hanging down from the truck 30; a first lifting body 40 liftable along the guide post 34; a second lifting body 44 liftable along the first lifting body 40; an expansion/contraction body 42 attached to the lifting body 44 and expandable/contractable in a horizontal direction and rotatable; and a working base 48 mounted to a distal end of the expansion/contraction body 42. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a traveling work unit, and more particularly, to a traveling work scaffold used for ship construction and repair in a ship dock.

  A boom-type work scaffold described in Patent Document 1 is known as a traveling work scaffold installed in this type of ship dock. FIG. 5 shows the schematic structure. A travel post 3 is movably disposed along the side wall of the dock 1. A boom 4 is mounted on the travel post 3 so that it can be raised and lowered, and a work table 5 is provided at the tip of the boom 4. The raising and lowering operation of the boom 4 is performed by extending and contracting the rod of the cylinder 6. Further, the traveling post 3 can be rotated in the horizontal direction by the turning device 7, and the boom 4 rotates in the horizontal direction integrally with the traveling post 3 by the rotation of the traveling post 3. Then, the work table 5 can be moved to an arbitrary position in the dock by the travel of the travel post 3, the raising and lowering of the boom 4, and the turning. Accordingly, the work table 5 is brought close to the hull of the ship that has entered the dock 1 to enable operations such as cleaning, welding, and painting of the hull.

  However, there are three problems with the traveling work scaffold having the above-described configuration. The first problem is that the operation of the boom 4 is performed by a combination of undulation and swivel arc motion, so that the alignment operation of the work table 5 is difficult. For this reason, there is a risk of hitting the work table 5 against the ship's side when the work table 5 is brought close to the ship if the operation is mistaken, and there is a possibility of a physical accident. The second problem is that the cylinder 6 is submerged. That is, when a ship is made to enter and exit from the dock 1, seawater is usually introduced into the dock 1 and the ship is floated. L reaches the upper part of the traveling post 3 as shown in FIG. For this reason, the cylinder 6 is submerged and corroded, and a failure is likely to occur. The third problem is that the posture adjustment of the work table 5 at the tip of the boom 4 is complicated. When the boom 4 is raised and lowered, the work table 5 is inclined according to the raising and lowering angle. For this reason, a posture adjusting mechanism for maintaining the work table 5 horizontally according to the undulation angle is necessary, and the structure becomes complicated.

Moreover, what was described in patent document 2 is also known as a traveling type working scaffold installed in a ship dock. The traveling work scaffold described in Patent Document 2 has a configuration in which a work table is provided on a traveling post that travels along the side wall of a ship dock so as to be movable up and down via an expansion / contraction mechanism. The platform can be moved to any position in the dock. For this reason, compared with the above-described boom-type work scaffold, it is easy to align the work table. However, this type of traveling work scaffold has a problem that the moving speed in the height direction (Z direction) is slow and lacks quickness.
Japanese Patent Publication No.55-6559 JP 2003-237682 A

  The object of the present invention is to improve the above-mentioned problems of the prior art, easy to operate, fast in the height direction (Z direction), the drive unit is not submerged, and the work table can be easily adjusted in posture. It is to provide a type work platform.

  In order to achieve the above object, a traveling work scaffold according to the present invention includes a traveling rail laid on a side wall of a ship dock, a carriage capable of traveling along the traveling rail, and a guide suspended on the carriage. A post, a first lifting body that can be moved up and down along the guide post, a second lifting body that can be moved up and down along the first lifting body, and a horizontal direction mounted on the second lifting body A telescopic body that is extendable and turnable, and a workbench that is attached to the tip of the telescopic body.

  In the traveling type work scaffold according to the present invention, the first lifting body and the second lifting body are formed of a rectangular frame, and the second lifting body is provided in the frame of the first lifting body. It is characterized by being fitted.

  In the traveling type working scaffold according to the present invention, the movement of the dock in the longitudinal direction is performed by traveling the carriage, and the movement in the height direction (Z direction) is performed by raising and lowering the first lifting body and the second lifting body. Further, the delicate operation for bringing the work table close to the ship's hull is mainly performed by the horizontal expansion / contraction and turning of the expansion / contraction body. In this way, the work table can be moved to an arbitrary position by a combination of simple operations, and the operation is easy. Particularly in the height direction (Z direction), the first elevating body and the second elevating body are moved up and down at the same time, so that the moving speed can be increased, which contributes to speeding up of work efficiency.

  Even when the seawater is introduced into the dock, the maximum draft level W. It can be positioned higher than L. For this reason, since these drive parts do not submerge, the problem of the corrosion by seawater or a failure does not arise. Further, since the work table is always held horizontally, its posture adjustment is easy.

  FIG. 1 is a front view showing an embodiment of a traveling work scaffold according to the present invention. FIG. 2 is a side view of the present embodiment. FIG. 3 is a plan view of this embodiment. FIG. 4 is a partial plan view of a ship dock on which the traveling work platform of the present embodiment is installed.

  In FIG. 4, a ship 12 enters the dock 10 for construction or repair. A traveling rail 16 is laid in the longitudinal direction of the side walls 14 and 14 of the dock 10, and traveling work scaffolds 18 and 18 are disposed along the traveling rails 16 and 16 so as to be able to travel. The traveling work scaffold 18 includes an elevating body 40 (44), a telescopic body 42 is attached to the elevating body 40 (44), and a work table 48 is attached to the tip of the telescopic body 42. It is possible to expand and contract and turn in the horizontal direction. The work table 48 can be moved to an arbitrary position in the dock 10 by running of the traveling work scaffold 18, raising and lowering of the lifting body 40 (44), expansion and contraction of the extension body 42, and turning. Accordingly, the work table 48 is brought close to the hull at a desired position of the ship 12 that has entered the vessel, thereby enabling operations such as cleaning, welding, and painting of the hull.

  Hereinafter, the structure of the traveling work scaffold 18 will be described with reference to FIGS. A plurality of rail brackets 24 are attached to the vertical wall surface of the side wall 14 at a predetermined height. A traveling rail 16 is laid so as to connect the tips of the brackets 24. Further, an auxiliary rail 28 is laid in parallel with the traveling rail 16 at the lower portion of the side wall 14. A carriage 30 is disposed on the traveling rail 16 so as to be able to travel. That is, the wheel 30 provided on the bottom of the carriage 30 is engaged with the traveling rail 16 and travels on the traveling rail 16 by the drive operation of the operation panel 33.

  A pair of guide posts 34, 34 are suspended from the carriage 30 with a predetermined interval. The lower ends of the guide posts 34 are connected by a connecting material. Further, a tension member 38 is attached to the lower end of each guide post 34 toward the side wall 14, and a roller 37 provided at the tip of the tension member 38 is engaged with the auxiliary rail 28. Therefore, the guide post 34 travels along the travel rail 16 integrally with the cart 30 by driving the cart 30. When the guide post 34 travels, the roller 37 of the tension member 38 also rolls along the auxiliary rail 28, and the guide posts 34, 34 move stably while maintaining a vertical posture.

A first elevating body 40 is fitted between the guide posts 34 and 34 so as to be movable up and down with respect to the guide post 34. That is, the first elevating body 40 is formed of a rectangular frame, and racks 40B and 40C are attached to the outer and inner sides of the vertical members 40A and 40A, respectively. On the other hand, the guide posts 34, 34 are provided with pinions 34A, 34A that engage with the racks 40B. When the pinions 34 </ b> A and 34 </ b> A are rotated forward and backward, the first lifting body 40 is moved up and down along the guide posts 34 by the pinion rack mechanism. The operating height of the first elevating body 40 is restricted by a limiter (not shown). That is, as shown by the two-dot chain line in FIGS. 1 and 2, the minimum height is set at a position where the lower end of the first lifting body 40 is close to the floor 10A of the dock. The maximum height is set at a position where the first elevating body 40 can be stably supported by the guide posts 34.

  A second elevating body 44 is fitted into the first elevating body 40 so as to be movable up and down with respect to the first elevating body 40. That is, the second elevating body 44 is also formed of a rectangular frame, and the vertical members 44A and 44A have pinions that engage with the racks 40C and 40C attached to the inner side of the vertical members 40A and 40A of the first elevating body 40. 44B and 44B are provided. When the pinions 44B and 44B are rotated forward and backward, the second lifting / lowering body 44 is lifted and lowered within the frame of the first lifting / lowering body 40 by the pinion rack mechanism.

  A rotation post 50 and a drive mechanism 52 are attached to the inside of the frame of the second elevating body 44, and the rotation post 50 can be rotated by the drive mechanism 52. An elastic body 42 is attached to the lower part of the rotating post 50. The stretchable body 42 includes a telescopic multi-stage stretch mechanism, and is stretchable in the horizontal direction. A work table 48 is attached to the distal end of the distal end rod 42 </ b> A of the stretchable body 42. Therefore, when the rotation post 50 is rotated by the drive mechanism 52, the expandable body 42 is rotated in the horizontal direction. By combining the horizontal turning motion and the telescopic motion of the telescopic body 42, the work table 48 can be freely moved to a wide range of positions as shown in FIG. The work table 48 can be turned in the horizontal direction independently of the telescopic body 42 by a turning mechanism 54 provided at the tip of the tip rod 42A. The turning range of the work table 48 is set to ± 90 degrees with respect to the axis of the extendable body 42. Therefore, when the work table 48 is brought close to the hull and the target work is performed, the work table 48 can be set to an angle most suitable for the work.

  Hereinafter, a method of using the traveling work scaffold 18 according to the present embodiment will be described. When the ship 12 enters the dock 10 or when the ship 12 in the dock 10 leaves, the seawater is introduced into the dock 10 to float the ship 12. When the seawater is introduced, the first elevating body 40 and the second elevating body 44 are pulled up to a high position as shown in FIGS. As a result, the main parts immersed in seawater are only the auxiliary rail 28, the lower part of the guide post 34, and the lower part of the first lifting body 40, and the carriage 30, the upper part of the guide post 34, the upper part of the first lifting body 40, the first 2 lift 44, telescopic body 42, and work table 48 have a maximum draft level W.2 of dock 10. It will be located higher than L. In addition, the trolley, the lifting body, the telescopic body, and the drive unit for driving the work table also have the maximum draft level W.V. Since it is located higher than L and does not submerge, there is no problem of corrosion or failure due to seawater.

  When carrying out the work on the hull, the entire amount of seawater is extracted from the dock 10. As a result, by lowering the first lifting body 40 and the second lifting body 44 to the lowest position (see FIG. 2), the worker 60 can get on and off the work table 48 from the floor 10A of the dock. A hand control panel 62 is attached to the work table 48. When the operator 60 operates the hand control panel 62, the work table 48 can be moved and brought closer to the hull of the ship 12 at a desired position. Specifically, the movement of the dock 10 in the longitudinal direction is performed by running the carriage 30 and the movement in the height direction (Z direction) is performed by raising and lowering the first elevating body 40 and the second elevating body 44. Further, the delicate operation for bringing the work table 48 close to the ship's hull is mainly performed by the expansion / contraction and turning of the expansion / contraction body 42 in the horizontal direction. At this time, the work table 48 is swung by the swivel mechanism 54, and an operation for setting the angle most suitable for the work is simultaneously performed. Thus, since the work bench 48 can be moved to an arbitrary position by a combination of simple operations, the traveling work scaffold 18 according to the present embodiment is easy to operate. Particularly in the height direction (Z direction), the first elevating body 40 and the second elevating body 44 are moved up and down at the same time, so that the moving speed can be increased, which contributes to speeding up of work efficiency. Further, since the work table 48 is always held horizontally, the posture adjustment is easy.

It is a front view showing an embodiment of a traveling type working scaffold according to the present invention. It is a side view of this embodiment. It is a top view of this embodiment. It is a fragmentary top view of the dock for ships in which the traveling type work scaffold of this embodiment is installed. It is a side view which shows schematic structure of the boom type traveling type working scaffold based on a prior art.

Explanation of symbols

10 ......... Dock, 12 ......... Ship, 14 ......... Sidewall, 16 ......... Running rail, 18 ......... Running scaffold, 24 ......... Bracket, 28 ...... Auxiliary rail, 30 ... ... trolley, 34 ... guide post, 34A ... pinion, 40 ... first lift, 42 ... telescopic body, 44 ... second lift, 44B ... pinion, 48 ......... Workbench, 50 ......... Rotating post, 52 ......... Drive mechanism, 54 ......... Swivel mechanism, 60 ......... Worker, 62 ......... Hand control panel.

Claims (2)

  A traveling rail laid on the side wall of the ship dock, a cart capable of traveling along the traveling rail, a guide post suspended from the cart, and a first lifting body capable of ascending and descending along the guide post A second elevating body that can be moved up and down along the first elevating body, a telescopic body that is mounted on the second elevating body and can be expanded and contracted in a horizontal direction, and can be pivoted; A traveling work scaffold characterized by comprising a working table. 2. The first elevating body and the second elevating body are formed of a rectangular frame, and the second elevating body is fitted in the frame of the first elevating body. The described traveling work scaffold.

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