JP2005104241A - Cover device for rainy day working - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover device for rainy day working which can prevent the ship side from getting wet with rain on rainy weather without requiring a large equipment space and a large cost. <P>SOLUTION: In this cover device 10 for rainy day working, when it starts raining during the working for the external surface of a hull 60, respective tiltable arms 16, 16 and so forth which are connected with respective vertical poles 14, 14 and so forth are tilted and stretched by operating a control panel 30 in a manner to adjust them to the size or the shape of the hull 60. Thus, a supporting arm 22 is brought into contact with the side surface of the hull 60. After the contact, a sheet 26 is made to overhang from a rotating roller 24 by using an overhanging reel 28, and thus, a gap which is formed between the quay wall of a dock 12 and the side surface of the hull 60 can be covered. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rain work cover device for performing work on a ship side of a ship put in a dock even in rainy weather.

  Ships tethered to dock facilities such as docks are generally operated outdoors, so work that interferes with rain cannot be performed until the rain stops. If the work was postponed due to the weather, the ship's berthing charge would increase, and the delivery time would be unstable.

  To deal with this problem, the method of covering the upper surface with a cover or a roof is conventionally used for small ship docks, but the cover and roof are enlarged for large ship docks, which is problematic in terms of strength and cost. was there.

Therefore, in the rain-carrying equipment disclosed in Patent Document 1, a separable rain umbrella provided on the crane is provided between a rain-carrying apparatus that covers luggage at the dock quay and an onboard cover device that covers the hatch of the ship. And a load is transferred by a hanging tool having a cylindrical cover. As a result, the cargo can be handled without getting wet in the rain.
JP 2002-303046 A

  By the way, when manufacturing, repairing and inspecting a large ship at the dock, various operations are performed on the outer surface of the hull, but in rainy weather, the hull gets wet in the rain, so painting work and repair work Can not do. Therefore, there was a problem that the work had to be postponed until the rain stopped.

  To solve this problem, a method of covering the upper surface of the dock with a roof is conceivable. However, since the hull has a very long and complicated outer shape and the size and shape vary depending on the hull, To accommodate the shape, a huge roof covering the entire hull must be installed in the dock. Therefore, in order to install this huge roof, there is a drawback that a huge facility space and cost are required.

  In the rain-carrying facility of Patent Document 1, since only a necessary portion is covered with a cover so that the baggage does not get wet during cargo handling, the outer surface of the hull cannot be prevented from being wet by rain.

  This invention is made in view of such a situation, and it aims at providing the cover apparatus for rainy weather work which can prevent the ship side getting wet with rain at the time of rain, without requiring many installation space and cost. .

  In order to achieve the above object, claim 1 of the present invention is a rain work cover device used during work on the ship side of a ship placed in a dock, wherein a plurality of vertical poles installed on the dock quay And a vertical arm that can be raised and lowered via a hoisting mechanism, a hoisting arm that can be extended and contracted by an elongating mechanism, and a tip arm of each hoisting arm, and a support arm that includes a shock absorbing member, A rotating roll that is installed on the support arm and winds up a sheet that shields between the undulating arms; and an overhanging means that projects the sheet wound on the rotating roll to a predetermined length. To do.

  According to claim 1, the support arm connected to the tip of the undulation arm by undulating and extending the undulation arm connected to the plurality of vertical poles by the undulation mechanism and the expansion / contraction mechanism according to the size and shape of the ship. Is brought into contact with the ship side. Since the support arm is provided with an impact absorbing member, it is possible to prevent damage due to an impact when the ship side and the support arm come into contact with each other. After the contact, the sheet is extended from the rotating roll installed on the support arm by the extension means. Thereby, since the upper surface of the gap formed between the dock quay and the ship side can be shielded, the work on the ship side can be performed even in rainy weather.

  Thus, since the rainy weather cover apparatus according to the present invention is composed of relatively simple devices and members, the ship side can be prevented from getting wet without requiring much equipment cost. A net for preventing scattering of the abrasive and the paint is always stretched around the dock through a plurality of poles. In the rain work cover apparatus of the present invention, the pole for extending the net can be used as a vertical pole, so that it can be newly installed on the dock quay without requiring equipment space.

  According to a second aspect of the present invention, the hoisting arm including the telescopic mechanism according to the first aspect has a hoisting arm body formed in a cylindrical shape, a spiral groove formed on the outer periphery, and the rotation is restricted by a rotation restricting member. In this state, the telescopic arm that is inserted in and out of the undulating arm main body freely, a rotating body in which a spiral groove formed on the inner periphery is screwed into the spiral groove of the telescopic arm, and rotating the rotating body, And a telescopic motor that expands and contracts the telescopic arm with respect to the undulating arm main body by a linear guide action by the spiral groove and the rotation restricting member.

  According to the second aspect of the present invention, when the telescopic mechanism provided in the hoisting arm rotates the rotating body by the telescopic motor, the rotational force is transmitted to the telescopic arm screwed with the rotating body. Since the rotation is restricted by the rotation restricting member, it slides with respect to the undulation arm main body. Thereby, the raising / lowering arm can be expanded-contracted.

  According to a third aspect of the present invention, the hoisting mechanism is configured by attaching a hoisting motor to the drive shaft connecting the hoisting arms according to the first or second aspect via a worm gear device including a worm wheel and a worm. It is characterized by being.

  According to the third aspect, when the hoisting mechanism drives the hoisting motor, the drive shaft rotates via the worm gear device including the worm and the worm gear worm, thereby hoisting the hoisting arm. Thereby, since the load to the raising / lowering direction concerning a raising / lowering arm can be absorbed with a worm gear apparatus, the raising / lowering arm can be raised / lowered and hold | maintained.

  According to a fourth aspect of the present invention, the current flowing through the hoisting motor according to the third aspect is measured by an ammeter, and the hoisting motor is stopped when the current value measured by the ammeter drops below a predetermined value. Means are provided.

  According to the fourth aspect, when the support arm comes into contact with the ship side, the load applied to the hoisting motor is reduced, so that the current value measured by the ammeter decreases. Thereby, since the control means stops the driving of the hoisting motor, the hoisting adjustment of the hoisting arm in the contact work can be easily performed.

  As described above, according to the cover device for rainy weather work according to the present invention, the vertical pole provided on the side surface of the dock is provided with the undulating and retractable undulating arm, and the sheet from the rotating roller between the supporting arm and the undulating arm is provided. By overhanging, the upper surface of the gap formed between the dock quay and the ship side can be shielded, so that work on the ship side can be performed even in rainy weather.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a rain work cover apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a schematic configuration of a rain work cover apparatus 10 according to an embodiment of the present invention, which is an example in which a net for preventing scattering is attached to a vertical pole.

  As shown in the figure, the rain work cover device 10 is installed on the upper surface of both docks of the dock 12, and mainly includes a vertical pole 14, a hoisting arm 16, a driving shaft 18 as a hoisting mechanism, a hoisting box 20, a support arm 22, and a rotation. The roller 24, the sheet 26, an extending reel 28 that is an extending means, and an operation panel 30 are included.

  A plurality of vertical poles 14, 14... Are installed in parallel on the upper surface of the quay of the dock 12, and nets 32, 32.

  .. Are fixed to the vertical poles 14, 14..., And a drive shaft 18 is rotatably installed between the undulation boxes 20, 20. The plurality of hoisting arms 16, 16... Each having a telescopic mechanism are fixed in parallel to the drive shaft 18, so that the hoisting arms 16, 16.

  In addition, a manual overhanging reel 28 is installed on the vertical pole 14, and a rotatable pulley 29 is installed at the same position of the drive shaft 18. An operation panel 30 is installed on the rightmost vertical pole 14 and includes a control unit (not shown) as control means and switches (not shown) for performing operations.

  FIG. 2 is a transparent perspective view showing the internal structure of the undulation box 20 in the rain work cover apparatus 10 of the present invention.

  The drive shaft 18 is connected to a hoisting motor 34 fixed in the hoisting box 20 via a worm gear device 36. The worm gear device 36 includes a worm wheel 38 provided on the drive shaft 18 and a worm 40 installed on the hoisting motor 34. A spiral groove is formed on the outer periphery of the worm wheel 38 and the worm 40, and the worm wheel 38 is screwed to the worm 40 in a state of rotating in a direction perpendicular to the rotation of the worm 40. The undulation motor 34 is preferably a lightweight electric motor with a reduction gear, and has a built-in ammeter (not shown) for measuring current. Further, each undulation motor 34 is connected to a control unit (not shown) of the operation panel 30, and the drive is synchronously controlled by the control unit (not shown). The hoisting motors 34 may not be installed in all the hoisting boxes 20, 20.

  FIG. 3 is an enlarged perspective view showing an expansion / contraction mechanism of the hoisting arm 16 in the rain work cover apparatus 10 of the present invention.

  The hoisting arm 16 mainly includes a hoisting arm main body 42, a rotating body 44, an extendable arm 46, a connecting member 48 that is a rotation restricting member, and an extendable motor 50.

  The undulating arm main body 42 connected to the drive shaft 18 is a rod having a cylindrical shape, and a donut-shaped rotating body 44 is rotatably installed at a tip end portion thereof. The rotating body 44 has a gear on the outer periphery, and a spiral groove is formed on the inner periphery. A telescopic arm 46 having a spiral groove formed on the outer periphery thereof is inserted into the hoisting arm main body 42 in a state of being screwed with the inner periphery of the rotating body 44. A connecting member 48 is provided at the tip of the extendable arm 46, and the extension of the extendable arm 46 is restricted when the connecting member 48 is fixed to the support arm 22. The hoisting arm main body 42 is provided with a telescopic motor 50 and is connected to the rotating body 44 through a gear. The expansion / contraction motor 50 is preferably a lightweight electric motor, and is connected to a control unit (not shown) of the operation panel 30 and the drive is synchronously controlled by the control unit. The telescopic motor 50 may not be provided on all the hoisting arms 16, 16.

  The support arm 22 connected to each of the hoisting arms 16, 16... Is provided with a pad (not shown) on the outer periphery as an impact absorbing member. The rotation roller 24 is installed on the upper portion of the support arm 22 via a rotation support member 52 having a spring mechanism. The rotating roller 24 is a roller for winding the sheet 26 covering between the undulating arms 16, 16..., And automatically rotates with a constant tension by the spring mechanism of the rotation support member 52. The sheet 26 has water repellency and light transmission, and an upper end is fixed to the rotating roller 24, and a bar 54 that holds the tension of the sheet 26 is provided at the lower end. A wire 56 is connected to the bar 54 of the seat 26, and the wire 56 is connected to the overhanging reel 28 via a rotary pulley 29 provided on the drive shaft 18. The overhanging reel 28 is a manual type reel that winds and feeds the wire 56. The overhanging reel 28 is a manual type, but may be a motor type.

  Next, the operation of the above-described rain work cover apparatus 10 according to the embodiment of the present invention will be described.

  FIG. 4 is a side view showing a schematic configuration when the rain work cover apparatus 10 according to the embodiment of the present invention is viewed from the entrance direction of the dock 12. In addition, the part shown with the dashed-two dotted line has shown the raising / lowering arm 16 of the retracted state. Further, the white arrow indicates the direction in which the hoisting arm 16 moves up and down, and the black arrow indicates the direction in which the telescopic arm 46 configured to the hoisting arm 16 extends and contracts.

  The hull 60 is installed in the dock 12 while being fixed by a gantry 62, and operations such as polishing and painting are performed on the outer surface of the hull. A rain work cover device 10 is installed on the quay of the dock 12 and stores the hoisting arms 16, 16... In a state indicated by a two-dot chain line when not in use.

  When it rains during work on the outer surface of the hull 60, each switch (not shown) of the operation panel 30 is operated. As a result, a control unit (not shown) of the operation panel 30 drives the hoisting motors 34, 34... To apply a rotational force to the worm gear devices 36, 36. Since the drive shaft 18 rotates in accordance with the rotation of the worm gear devices 36, 36..., The undulating arms 16, 16.

  Further, when the distance between the ship side and the quay of the dock 12 is long, each switch (not shown) of the operation panel 30 is operated. Thereby, the control part (not shown) of the operation panel 30 drives each expansion-and-contraction motor 50, 50 ..., and rotates the rotary bodies 44, 44 .... The rotation of the rotating bodies 44, 44... Is directly transmitted to the screwed telescopic arms 46, 46..., But the telescopic arms 46, 46. Work and extend and retract relative to the undulating arm body 42. The lengths of the hoisting arms 16, 16,.

  As described above, the operation panel 30 is operated to adjust the undulation and expansion / contraction of the undulation arms 16, 16... According to the size and shape of the hull 60, and the support arm 22 connected to the tip of the undulation arms 16, 16. Is brought into contact with a handrail provided on the side surface of the hull 60 (hereinafter referred to as the ship side). When the handrail on the ship side is located at a high position where the support arm 22 cannot be brought into contact, the support arm 22 may be brought into contact with the ship side outer surface or the hull outer surface of the hull 60. Since the impact generated at the time of contact can be absorbed by a pad (not shown) which is an impact absorbing member provided on the outer periphery of the support arm 22, damage to the ship side and the support arm 22 can be prevented.

  When the support arm 22 comes into contact with the handrail on the ship side, the hoisting arms 16, 16... Are bridged between the vertical poles 14, 14. For this reason, since the load applied to the hoisting motors 34, 34... Via the hoisting arms 16, 16,... Is reduced, the current flowing through the hoisting motors 34, 34. Since the currents flowing through the undulation motors 34, 34,... Are measured by an ammeter (not shown), if the reduced current value is reduced below a predetermined value, the control unit (not shown) of the operation panel 30 to be connected. Stops driving of the hoisting motors 34, 34. This makes it possible to easily adjust the undulations of the undulation arms 16, 16,.

  After the support arm 22 is brought into contact with the handrail on the ship side, the overhanging reel 28 is rotated and the wire 56 is wound up, so that the sheet 26 is placed above the support arm 22 and the undulation arms 16, 16. Overhang. Further, when the extending reel 28 is rotated in the reverse direction and the wire 56 is fed out, the sheet 26 is automatically wound by the rotating roller 24. When the length of the wire 56 is adjusted in this manner and the sheet 26 wound around the rotating roller 24 is projected upward between the support arm 22 and the undulating arms 16, 16... In the state shown by the solid line in FIG. 4, the rain that pours into the gap formed between the quay of the dock 12 and the ship side can be shielded by the seat 26. As a result, it is possible to prevent the ship side from getting wet with rain, so that the work on the ship side can be performed even in rainy weather.

  During the use of the rain work cover device 10, an external force may be applied in the undulation direction of the undulation arms 16, 16. When the hoisting arms 16, 16... Are lifted by the external force, the vertical poles 14, 14,... And the ship side cannot be stably bridged, and the rain work cover device 10 may be damaged.

  In the rain work cover apparatus 10 according to the present invention, the drive shaft 18 that connects the hoisting arms 16, 16... Is connected to the vertical poles 14, 36. 14... For this reason, since the external force applied in the undulation direction can be absorbed by the worm gear devices 36, 36..., The gap formed between the dock 12 and the ship side can be stably shielded, and rain work The cover device 10 can be prevented from being damaged. Further, when an external force is applied in the undulation direction while adjusting the undulations of the undulation arms 16, 16..., The external force is transmitted to the undulation motors 34, 34. Therefore, the control unit (not shown) of the operation panel 30 stops driving the hoisting motors 34, 34. Thereby, it can prevent that the cover apparatus 10 for rain work is damaged by the external force to the undulation direction.

  By the way, the bow and stern forming the hull 60 have various sizes and shapes. On the other hand, the ship side has a linear shape when viewed from above, and occupies most of the hull 60. Therefore, by covering the ship side with the rain work cover apparatus 10 having a simple device configuration, most of the hull 60 can be operated even in the rain without increasing the equipment cost. Overdue can be reduced.

  Generally, devices and members necessary for maintenance and inspection of the hull 60 are provided on the upper surface of the dock 12. In addition, in order to prevent the used abrasives and paints from splashing and contaminating the environment during polishing and painting operations on the outer surface of the hull, it is necessary to install scattering prevention nets 32, 32. There is. For this reason, it is extremely difficult to secure a space on the upper surface of the dock 12 in order to newly install devices, and it takes a lot of time to remove or close these devices to cover the hull 60. In addition to this, there is a risk of reducing work pollution and environmental pollution. The rain work cover apparatus 10 according to the present invention uses the vertical poles 14, 14... For stretching the nets 32, 32... For preventing scattering, so that it is newly installed on the dock 12 without requiring equipment space. be able to.

The perspective view which showed schematic structure of the cover apparatus for rainy weather work which is embodiment of this invention The transparent perspective view which showed the internal structure of the undulation box in the cover apparatus for rainy weather work of this invention The expanded perspective view which showed the expansion-contraction mechanism of the hoisting arm in the cover apparatus for rainy weather work of this invention The side view which showed schematic structure when the cover apparatus for rainy weather which is embodiment of this invention is seen from the entrance direction of a dock

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Cover apparatus for rainy work, 12 ... Dock, 14 ... Vertical pole, 16 ... Hoisting arm, 18 ... Drive shaft, 20 ... Hoisting box, 22 ... Support arm, 24 ... Rotating roller, 26 ... Sheet, 28 ... Overhang Reel, 30 ... operation panel, 32 ... net, 34 ... hoisting motor, 36 ... worm gear device, 38 ... worm wheel, 40 ... worm, 42 ... hoisting arm body, 44 ... rotating body, 46 ... telescopic arm, 48 ... Connecting member, 50 ... telescopic motor, 52 ... rotation support member, 54 ... bar, 56 ... wire, 60 ... hull, 62 ... mount

Claims (4)

A cover device for rain work used when working on the ship side of a ship put in a dock,
Multiple vertical poles installed on the dock quay,
A hoisting arm that is connected to the vertical pole via a hoisting mechanism so as to be hoistable, and can be extended and contracted by an elongating mechanism;
While connecting the tip of each undulation arm, a support arm provided with an impact absorbing member,
A rotating roll that is installed on the support arm and winds up a sheet that shields between the undulation arms;
A projecting means for projecting the sheet wound on the rotating roll to a predetermined length;
A cover device for rainy weather work, comprising: The hoisting arm provided with the telescopic mechanism is
A undulating arm body formed in a tubular shape;
A spiral groove is formed on the outer periphery, and an extendable arm that is inserted into the undulating arm main body in a state in which the rotation is restricted by the rotation restricting member, and
A rotating body in which a spiral groove formed on an inner periphery is screwed into a spiral groove of the telescopic arm;
An expansion / contraction motor that rotates the rotating body and expands / contracts the telescopic arm with respect to the undulation arm main body by a linear guide action by the spiral groove and the rotation restricting member;
The rain-covering cover device according to claim 1, wherein By attaching a hoisting motor to a drive shaft connecting the hoisting arms via a worm gear device comprising a worm wheel and a worm,
The rain working cover device according to claim 1, wherein the undulation mechanism is configured. Measure the current flowing through the undulation motor with an ammeter,
4. The rain work cover apparatus according to claim 3, further comprising control means for stopping the undulation motor when a current value measured by the ammeter falls below a predetermined value.

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