JP2005178457A - Hatch cover opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easily operable hatch cover opening/closing device by shortening time required for opening/closing operation. <P>SOLUTION: The hatch cover opening/closing device with juxtaposed first and second hatch covers 11, 12 for opening/closing an opening on a deck includes a high lift mechanism 50 lifting the first and second hatch covers 11, 12 in a high lift condition respectively. When one of the first and second hatch covers 11, 12 is in the high lift condition, the other one can travel and enter below it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement of a hatch cover opening / closing device provided in a ship.

  As an opening / closing device for a biggie back hatch cover provided in a bulk carrier or the like, there is a conventional one shown in FIG.

  The opening / closing device includes first and second hatch covers 11 and 12 that open and close an opening on the deck 1, and includes a high lift mechanism 50 that lifts only the first hatch cover 11 into a high lift state. Only the hatch cover 12 can travel through the wheels 3.

  When the opening is opened by the second hatch cover 12, the first hatch cover 11 is lifted to a high lift state as shown in FIG. Subsequently, as shown in FIG. 4B, the second hatch cover 12 travels and enters below the first hatch cover 11.

  When the opening is opened by the first hatch cover 11, first, as shown in FIG. 4A, the first hatch cover 11 is lifted to a high lift state, and the second hatch cover 12 travels and enters below. Subsequently, as shown in FIG. 4B, the second hatch cover 12 travels and enters below the first hatch cover 11. Subsequently, as shown in FIG. 4C, the first hatch cover 11 is placed on the second hatch cover 12, and the second hatch cover 12 travels to return to the original position.

Patent Document 1 discloses a structure in which the traveling of the hatch cover is driven by a chain.
Japanese Patent Laid-Open No. 07-132879

  However, since such a conventional hatch cover opening / closing device does not include a high lift mechanism for lifting the second hatch cover 12 to a high lift state, the second hatch cover 12 is opened as described above. In comparison, when the first hatch cover 11 is opened, the travel distance of the second hatch cover 12 is increased, the time required for opening and closing is increased, and the operation is complicated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a hatch cover opening / closing device that can be operated easily by shortening the time required for opening and closing.

  1st invention applies to the opening / closing apparatus of the hatch cover provided with the 1st, 2nd hatch cover which opens and closes the opening on a deck side by side.

  The first and second hatch covers are each provided with a high lift mechanism that lifts the first and second hatch covers into a high lift state, and the other one of the first and second hatch covers moves below one of the first and second hatch covers in the high lift state. It was characterized by being able to enter.

  According to a second aspect, in the first aspect, the high lift mechanism includes a pair of lifting arms protruding to the sides of the first and second hatch covers, a lifting actuator for lifting the lifting arm, and the lifting arm interfering with the lifting actuator. And an arm retracting mechanism for retracting so as not to be stored.

  According to a third aspect, in the second aspect, the high lift mechanism lifts the pair of end-side lifting arms and the pair of meeting-side lifting arms protruding to the sides of the first and second hatch covers, and each end-side lifting arm. End-side lifting actuator and meeting-side lifting actuator that lifts each meeting-side lifting arm In order to prevent this, the protruding amount of the end side lifting arm is made smaller than that of the meeting side lifting arm.

  According to a fourth aspect, in the third aspect, the first and second hatch covers are moved to the open position, and the meeting side lifting arm is in front of the end side lifting actuator. It was.

  According to a fifth invention, in any one of the second to fourth inventions, the arm retracting mechanism includes a movable arm member that is slidably supported by the lifting arm, and the movable arm member is slid to slide the lifting arm. It was characterized by having a structure that protrudes and protrudes from the end.

  In a sixth aspect based on any one of the second to fourth aspects, the arm retracting mechanism includes a movable arm member rotatably supported by the lifting arm, and the movable arm member is rotated. It is characterized in that it is configured to protrude from the end of the lifting arm.

  In a seventh aspect based on any one of the second to sixth aspects, the arm retracting mechanism includes a movable arm member supported so as to be able to protrude and retract from an end of the lifting arm, and the first and second hatch covers are provided. The movable arm member is projected and retracted from the end of the lifting arm in conjunction with the lifting and lowering operation.

  In an eighth invention according to any one of the second to sixth inventions, the arm retracting mechanism includes a movable arm member supported so as to be able to protrude and retract from an end of the lifting arm, and the first and second hatch covers are provided. The movable arm member is projected and retracted from the end of the lifting arm in conjunction with a traveling operation that moves along the opening on the deck.

  According to 1st invention, when opening opening with a 1st hatch cover, a 2nd hatch cover is lifted to a high lift state, and a 1st hatch cover is moved and entered under it.

  When the opening is opened by the second hatch cover, the first hatch cover is lifted to a high lift state, and the second hatch cover is moved and inserted below the first hatch cover.

  In this way, when opening both the first and second hatch covers, the movement distance of the first and second hatch covers can be minimized, and the time required for opening and closing can be shortened and the operation can be easily performed. Become.

  According to the second invention, the arm retracting mechanism retracts the lifting arm so as not to interfere with the lifting actuator, so that the first and second hatch covers are placed below one of the first and second hatch covers in the high lift state. The other moves and enters.

  According to the third aspect, since the protruding amount of the end side lifting arm is made smaller than that of the meeting side lifting arm, the end side lifting arm does not interfere with the meeting side lifting actuator.

  According to the fourth invention, since the meeting side lifting arm is in front of the end side lifting actuator with the first and second hatch covers moved to the open position, the end side lifting arm does not interfere with the meeting side lifting actuator. .

  According to the fifth aspect of the present invention, the lifting arm can be retracted so as not to interfere with the lifting actuator by sliding the movable arm member to protrude from the end of the lifting arm.

According to the sixth aspect of the invention, the lifting arm can be retracted so as not to interfere with the lifting actuator by rotating the movable arm member so as to protrude from the end of the lifting arm.

  According to the seventh invention, the actuator for driving the movable arm member is abolished by automatically moving the movable arm member in and out of the end of the lifting arm in conjunction with the raising and lowering movement of the first and second hatch covers. This simplifies the structure.

  According to an eighth invention, in any one of the second to sixth inventions, the movable arm member is connected to the end of the lifting arm in conjunction with the traveling operation in which the first and second hatch covers move along the opening on the deck. By automatically appearing and moving from the part, the actuator for driving the movable arm member is eliminated, and the structure can be simplified.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1A and 1B, the first and second hatch covers 11 and 12 move in the front-rear direction on the deck 1 of the hull to open and close the hold. A plurality of sets of first and second hatch covers 11 and 12 are provided side by side on the deck 1.

  As shown in FIG. 2, an opening 8 that is opened and closed by the first and second hatch covers 11 and 12 is formed in the hull, and a combing top 9 is provided along the opening 8 on the deck 1.

  The opening / closing device for the first and second hatch covers 11, 12 includes left and right guide rails 2 on the combing top 9, and the first and second hatch covers 11, 12 turn four wheels 3 onto the guide rails 2. It is designed to run in contact.

  The opening / closing device includes a jack-up mechanism 30 that raises the first and second hatch covers 11 and 12 to positions where traveling is possible. The jack-up mechanism 30 includes an elevating rail 31 on which each wheel 3 is placed, and a jack-up cylinder 32 that elevates and lowers each elevating rail 31. Each lifting rail 31 is moved by a jackup cylinder 32 between an ascending position continuous with the guide rail 2 and a descending position lowered from the guide rail 2.

  As shown by a two-dot chain line in FIG. 2, the first and second hatch covers 11 and 12 are separated from the combing top 9 in the traveling state where each lifting rail 31 is in the raised position, and each wheel 3 is moved to each lifting rail. It is supported so that it can run by rolling on 31 and the guide rail 2.

  As shown by a solid line in FIG. 2, in a closed state where each lifting rail 31 is in the lowered position, each wheel 3 is lowered from the guide rail 2 while being placed on each lifting rail 31, and the first and second hatch covers 11. , 12 are placed on the combing top 9.

  A strip-shaped plate 7 is provided on the combing top 9 so as to surround the opening 8. The first and second hatch covers 11 and 12 are provided with packings 6 seated on the plate 7. As shown by a solid line in FIG. 2, the packing 6 is seated on the plate 7 with the first and second hatch covers 11, 12 lowered at the closed position and placed on the combing top 9. Seal.

  The opening / closing device includes a motor 41 that moves the first and second hatch covers 11, 12 in the opening / closing direction, and a motor power transmission mechanism 40 that transmits the power of the motor 41 to the first and second hatch covers 11, 12. .

  The motor power transmission mechanism 40 includes a sprocket 42 that is rotationally driven by a motor 41 having a speed reducer, a chain 44 that moves while meshing with each sprocket 42, and a chain 44 that is attached to and detached from the first and second hatch covers 11 and 12. A chain connection mechanism 29 that connects the plurality of idler sprockets 45 and circulates along the guide rail 2.

  Thereby, the first and second hatch covers 11 and 12 move in one direction when the motor 41 rotates in one direction, and the first and second hatch covers 11 and 12 move in one direction when the motor 41 rotates in the other direction. Move in the other direction.

  The opening / closing device includes a high lift mechanism 50 that lifts the first and second hatch covers 11 and 12 to a high lift state, respectively. When one of the first and second hatch covers 11 and 12 is in a high lift state, The other of the second hatch covers 11 and 12 is configured to travel and enter.

  The high lift mechanism 50 includes left and right end-side lifting arms 13 and left and right meeting-side lifting arms 14 projecting laterally from the left and right side portions of the first and second hatch covers 11 and 12 and ends for lifting the end-side lifting arms 13. A side lifting actuator 23 and a meeting side lifting actuator 24 that lifts each meeting side lifting arm 14 are provided. As a result, the first and second hatch covers 11 and 12 in the closed position are supported at the four points of the end side lifting arms 13 and the meeting side lifting arms 14, and the end side lifting actuators that extend and contract in synchronization with each other. 23 and each meeting side lifting actuator 24.

  The first and second hatch covers 11 and 12 are arranged so that the meeting-side lifting arms 14 are close to each other and the end-side lifting arms 13 are separated from each other at the closed positions.

  The opening / closing apparatus includes an arm storage mechanism 15 that stores each meeting-side lifting arm 14 so as not to interfere with the meeting-side lifting actuator 24.

  The arm retracting mechanism 15 includes a movable arm member 16 that is slidably supported on an end portion of the meeting side lifting arm 14, and an actuator 17 that causes the movable arm member 16 to protrude and retract from the end portion of the meeting side lifting arm 14.

  A clearance C is provided between the end surface of the meeting side lifting arm 14 and the meeting side lifting actuator 24 in a state where the movable arm member 16 is retracted so as not to protrude from the end surface of the meeting side lifting arm 14.

  Thereby, when the second and first hatch covers 12 and 11 in the traveling state travel below the first and second hatch covers 11 and 12 in the high lift state, each end-side lifting arm 13 and each The meeting side lifting arm 14 does not interfere with each end side lifting actuator 23 and each meeting side lifting actuator 24.

  Since the protruding amount of the end side lifting arm 13 is smaller than that of the meeting side lifting arm 14, the end side lifting arm 13 does not interfere with the meeting side lifting actuator 24.

  Further, each meeting-side lifting arm 14 on the traveling side is in a state where the second and first hatch covers 12 and 11 are completely inserted under the first and second hatch covers 11 and 12 in the high lift state and are in the open position. Is located in front of each end-side lifting actuator 23, and interference between the two is avoided.

  The first and second hatch covers 11 and 12 are provided with a concave portion 21 on the upper surface and a convex portion 22 on the lower surface. The first and second hatch covers 11 and 12 are fitted on the concave portion 21 and the convex portion 22 in a state where one of the first and second hatch covers 11 and 12 is placed on the other, and positioning between the two is performed. Thereby, even when the first and second hatch covers 11 and 12 travel in a state where one of them is placed on the other, it is possible to prevent the two from shifting.

  As shown in FIG. 3, in the chain connecting mechanism 29, a piece opening 46 is formed in a connecting piece 53 interposed in the middle of the chain 44, and the piece opening 46 is formed in the first and second hatch covers 11 and 12. Left and right connectors 51 and 52 to be plugged into are provided.

  Accordingly, as the first and second hatch covers 11 and 12 are lowered from the high lift state and placed on the combing top 9, the connector 51 is inserted into the top opening 46 and the chain 44 is first, The second hatch covers 11 and 12 are connected. On the other hand, as the first and second hatch covers 11 and 12 rise to the high lift state, the connector 51 comes out of the top opening 46 and the chain 44 is connected to the first and second hatch covers 11 and 12. Canceled.

  The connecting piece 53 is larger than the other pieces 47 constituting the chain 44, but is provided at a position where it does not interfere with each idler sprocket 45 around which the chain 44 is hung, and drives the first and second hatch covers 11, 12. It is designed not to cause any trouble.

  Next, the operation will be described.

  FIG. 4 shows an operation in which the first and second hatch covers 11 and 12 are opened and closed. This will be described. When the first and second hatch covers 11 and 12 are closed, as shown in FIG. 1, after the first and second hatch covers 11 and 12 are moved to the closed positions, the jack-up cylinders are moved. 32 is contracted and each lifting rail 31 is lowered. Thereby, each wheel 3 descends from the guide rail 2 while being placed on each lifting rail 31, and the first and second hatch covers 11 and 12 are placed on the combing top 9.

  When the opening 8 is opened by the second hatch cover 12, as shown in FIG. 4A, the first hatch cover 11 is lifted into a high lift state, and the second hatch cover 12 travels and enters below.

  When the opening 8 is opened by the first hatch cover 11, as shown in FIG. 4B, the second hatch cover 12 is lifted to a high lift state, and the first hatch cover 11 travels and enters below.

  As described above, when both the first and second hatch covers 11 and 12 are opened, the travel distance of the first and second hatch covers 11 and 12 can be minimized, and the time required for opening and closing can be shortened. At the same time, the operation becomes easy.

  Further, only one opening 8 can be closed in a state where the first and second hatch covers 11 and 12 are stacked one above the other. Further, the first and second hatch covers 11 and 12 can be traveled and moved in a state where they are stacked one above the other.

  As another embodiment, as shown in FIGS. 5 and 6, the arm retracting mechanism 15 is linked to the operation in which the first and second hatch covers 11 and 12 are lowered and raised via the jack-up mechanism 30. The movable arm member 16 may be configured to protrude from the end of the meeting-side lifting arm 14.

  The arm storage mechanism 15 includes a movable arm member 16 that is slidably supported by the meeting side lifting arm 14, and an interlocking mechanism 60 that causes the movable arm member 16 to protrude and retract from the end of the meeting side lifting arm 14.

  The interlocking mechanism 60 includes a movable rod 61 protruding and retracting from the lower surface of the meeting-side lifting arm 14, and first and second rocker arms that transmit the movement of the movable rod 61 up and down relative to the meeting-side lifting arm 14 to the movable arm member 16. 62 and 63, and a spring 64 that urges the movable arm member 16 in the retracting direction.

  The movable arm member 16 includes a seat 65 on which the rod tip 28 of the meeting side lifting actuator 24 is seated, and a locking portion 66 that engages the rod tip 28 is formed on the seat 65. When the movable arm member 16 is seated on the rod tip portion 28 of the meeting-side lifting actuator 24, the engaging portion 66 engages with the rod tip portion 28, so that the movable arm member 16 is not retracted by the biasing force of the spring 64. It is like that.

  Next, the operation will be described.

  As shown in FIG. 5, when the first hatch cover 11 is raised via the jack-up mechanism 30, the movable rod 61 is separated from the combing top 9, and the movable arm member 16 is drawn by the urging force of the spring 64.

  As shown in FIG. 6, when the first hatch cover 11 is lowered via the jack-up mechanism 30, the movable rod 61 comes into contact with the combing top 9 and is pushed into the meeting-side lifting arm 14. The movable arm member 16 protrudes from the meeting-side lifting arm 14 through the two rocker arms 62 and 63. When the meeting-side lifting actuator 24 is extended in this state, the rod tip 28 is seated on the locking portion 66 of the movable arm member 16 and the first hatch cover 11 is lifted.

  As described above, the arm retracting mechanism 15 has a configuration in which the movable arm member 16 automatically protrudes and retracts. Therefore, the structure of the arm retracting mechanism 15 can be simplified by eliminating the actuator that drives the movable arm member 16.

  As another embodiment, as shown in FIGS. 7 to 10, the arm retracting mechanism 15 includes a movable arm member in conjunction with a traveling operation in which the first and second hatch covers 11 and 12 move along the opening 8. It is good also as a structure which makes 16 protrude and retract from the edge part of the meeting side lifting arm 14. FIG.

  The arm storage mechanism 15 includes a movable arm member 16 slidably supported by the meeting-side lifting arm 14, an upper first, second cams 71, 72, a lower first, second cam 81, 82 and an interlocking mechanism 70 for moving the movable arm member 16 in and out of the end of the meeting-side lifting arm 14 following the upper first and second cams 71 and 72 and the lower first and second cams 81 and 82. With.

  The interlocking mechanism 70 includes a rotating rod 73 projecting from the lower surface of the meeting-side lifting arm 14, a first kicker 75 that rotates the rotating rod 73 following the upper first and second cams 71, 72, and a lower first First, a second kicker 85 that rotates the rotating rod 73 following the second cams 81 and 82, an arm 77 that protrudes from the upper end of the rotating rod 73 in the radial direction, and an operation that the arm 77 rotates. And a link 76 that transmits the above to the movable arm member 16.

  The first kicker 75 includes a pair of rollers 74 that are in rolling contact with the upper first and second cams 71 and 72. The first kicker 75 and the lower first and second cams 81 and 82 have different mounting heights and do not interfere with each other.

  The second kicker 85 includes a pair of rollers 84 that are in rolling contact with the lower first and second cams 81 and 82. The second kicker 85 and the upper first and second cams 71 and 72 have different mounting heights and do not interfere with each other.

  Next, the operation will be described.

  When the first hatch cover 11 travels and moves in the direction indicated by the arrow in FIG. 10A, the first kicker 75 rotates the rollers 74 in contact with the upper first and second cams 71 and 72 in turn. The rod 73 is rotated halfway counterclockwise in the drawing, and the movable arm member 16 is pulled.

  When the first hatch cover 11 travels and moves in the direction indicated by the arrow in FIG. 10B, the second kicker 85 causes the rollers 84 to contact the lower first and second cams 81 and 82 in turn. The rotary rod 73 is rotated halfway counterclockwise in the figure, and the movable arm member 16 is protruded from the meeting-side lifting arm 14. When the meeting-side lifting actuator 24 is extended in this state, the rod tip 28 is seated on the locking portion 66 of the movable arm member 16 and the first hatch cover 11 is lifted.

  As described above, the arm retracting mechanism 15 has a configuration in which the movable arm member 16 automatically protrudes and retracts. Therefore, the structure of the arm retracting mechanism 15 can be simplified by eliminating the actuator that drives the movable arm member 16.

  As another embodiment, as shown in FIG. 11, the arm storage mechanism 15 includes an L-shaped movable arm member 62 that is rotatably supported via a pin 61 at the end of the meeting-side lifting arm 14. Further, the movable arm member 62 may be manually rotated so as to protrude from the end of the meeting-side lifting arm 14.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

  The present invention can be used for a hatch cover opening and closing device provided in a ship.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, in which (a) is a side view of a hatch cover opening / closing device, and (b) is a plan view of the hatch cover opening / closing device. Sectional drawing of the first hatch cover etc. similarly. Sectional drawing of a chain etc. similarly. Similarly (a), (b) is a figure in which the first and second hatch covers are opened and closed. Sectional drawing of the 1st, 2nd hatch cover, etc. which show other embodiment. Sectional drawing which similarly shows operation | movement of an arm storing mechanism. Sectional drawing of the 1st hatch cover etc. which show other embodiment. Sectional drawing similarly shown by the arrow A of FIG. Sectional drawing similarly shown by the arrow B of FIG. Sectional drawing which similarly shows operation | movement of an arm storing mechanism. Sectional drawing of the 1st hatch cover etc. which show other embodiment. The figure in which a 1st, 2nd hatch cover shows opening / closing operation | movement in a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 deck 2 guide rail 3 wheel 8 opening 11 1st hatch cover 12 2nd hatch cover 13 end side lifting arm 14 meeting side lifting arm 15 arm storing mechanism 16 movable arm member 23 end side lifting actuator 24 meeting side lifting actuator 30 jack up Mechanism 50 High lift mechanism 62 Movable arm member

Claims (8)

In application to a hatch cover opening and closing device in which the first and second hatch covers that open and close the opening on the deck are arranged side by side,
A high lift mechanism for lifting the first and second hatch covers to a high lift state,
A hatch cover opening and closing device characterized in that the other of the first and second hatch covers moves and can enter under one of the first and second hatch covers in the high lift state. The high lift mechanism includes a pair of lifting arms projecting laterally of the first and second hatch covers;
A lifting actuator that lifts this lifting arm;
2. The hatch cover opening and closing device according to claim 1, further comprising an arm retracting mechanism for retracting the lifting arm so as not to interfere with the lifting actuator. The high-lift mechanism includes a pair of end-side lifting arms and a pair of meeting-side lifting arms protruding to the sides of the first and second hatch covers, an end-side lifting actuator for lifting each end-side lifting arm, and each meeting-side lifting With a meeting-side lifting actuator that lifts the arm,
The meeting side lifting arms close to each other in the closed position are provided with the arm retracting mechanism,
The hatch cover opening and closing device according to claim 2, wherein the end-side lifting arm has a smaller protrusion than the meeting-side lifting arm so that the end-side lifting arm does not interfere with the meeting-side lifting actuator.   The opening / closing of the hatch cover according to claim 3, wherein the meeting side lifting arm is located in front of the end side lifting actuator in a state where the first and second hatch covers are moved to the open position. apparatus.   5. The arm storing mechanism includes a movable arm member that is slidably supported by the lifting arm, and the movable arm member is slid to protrude from an end portion of the lifting arm. The hatch cover opening and closing device according to any one of the above.   The arm retracting mechanism includes a movable arm member rotatably supported by the lifting arm, and is configured to protrude and retract from an end of the lifting arm by rotating the movable arm member. The hatch cover opening and closing device according to any one of 2 to 4.   The arm retracting mechanism includes a movable arm member supported so as to be able to protrude and retract from an end portion of the lifting arm, and the movable arm member is moved to the end of the lifting arm in conjunction with the movement of the first and second hatch covers. The hatch cover opening / closing device according to any one of claims 2 to 6, wherein the hatch cover opening / closing device is configured to project and retract from a portion.   The arm retracting mechanism includes a movable arm member supported so as to be able to protrude and retract from an end of the lifting arm, and in conjunction with a traveling operation in which the first and second hatch covers move along the opening on the deck. The hatch cover opening and closing device according to any one of claims 2 to 6, wherein the movable arm member is configured to protrude and retract from an end of the lifting arm.

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