JP6182341B2 - Shipboard crane equipment - Google Patents

Description

  The present invention relates to an onboard crane apparatus installed on a ship.

  As a crane apparatus installed on a ship, Patent Document 1 discloses an apparatus including a main boom attached to a swivel and a cylinder device for raising and lowering the main boom.

JP 2005-255326 A

  In the crane apparatus described in Patent Document 1, since the sheave occupies the deck with the crane apparatus stored on the deck, the deck cannot be effectively utilized by that amount. As described above, the onboard crane apparatus has a problem that the deck cannot be effectively used when the crane apparatus is stored on the deck.

  In order to make effective use of the deck, it is conceivable to hold the crane device upright. However, in that case, it is difficult to stably maintain the state for a long time due to leakage of hydraulic oil in the cylinder device.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an onboard crane apparatus that can effectively utilize a deck.

  The present invention is an on-board crane device installed on a ship, and is rotatably supported by a gantry arranged on the ship and is connected to the frame so as to be able to suspend a transported object, and to the frame. A main link, a first raising / lowering cylinder that is pivotably connected between the gantry and the main link, and pivots between the main link and the frame. A second raising / lowering cylinder connected to the main link and pivotally connected to the main link, and a support link supporting the frame in an upright state, attached to the main link, and the support A support actuator for raising and lowering the link, and when the first raising and lowering cylinder is in the most contracted state and the second raising and lowering cylinder is in the extended state, the support link is raised and the frame is raised. Characterized by supporting the beam.

  According to the present invention, the onboard crane device includes the support link that stands up and supports the frame in a state in which the first raising / lowering cylinder is in the most contracted state and the second raising / lowering cylinder is in the extended state. Stored. Therefore, the deck can be used effectively.

It is a top view of the shipboard crane apparatus concerning the embodiment of the present invention, and shows the state where a crane is a lower storage posture. It is a side view of the shipboard crane apparatus concerning the embodiment of the present invention, and shows the state where a crane is a lower storage posture. It is a front view of the onboard crane apparatus which concerns on embodiment of this invention, and shows the state which suspends an apparatus. It is a front view of the attachment in the onboard crane apparatus which concerns on embodiment of this invention, and shows the state mounted in the mount frame. It is a side view of the shipboard crane apparatus concerning the embodiment of the present invention, and shows the state where the frame stood upright. It is a side view of the onboard crane apparatus which concerns on embodiment of this invention, and shows the maximum swinging-out state of a flame | frame. It is a side view of the shipboard crane apparatus concerning the embodiment of the present invention, and shows the state where a frame is an upper storage posture. It is a side view of the onboard crane apparatus which concerns on embodiment of this invention, and is a figure which shows the process in which an attachment is connected to a crane. It is a side view of the onboard crane apparatus which concerns on embodiment of this invention, and is a figure which shows the process in which an apparatus is connected and conveyed to a crane.

  Hereinafter, an onboard crane apparatus 100 according to an embodiment of the present invention will be described with reference to the drawings.

  The on-board crane apparatus 100 is installed at the stern of a ship 1 such as an ocean research ship, an ocean observation ship, an ocean research ship, etc. The equipment 5 thrown into the sea is pulled back and returned to the deck 2.

  The onboard crane apparatus 100 is demonstrated with reference to FIGS.

  The on-board crane device 100 can suspend a gate-type frame 10 that is rotatably supported by a gantry 3 disposed on a deck 2 of a ship 1, a drive mechanism 30 that tilts the frame 10, and a device 5. And an attachment 50 detachably connected to the frame 10.

  As shown in FIG. 1, the frame 10 has a pair of leg portions 11 and 12 whose one end side is rotatably supported on a frame 3 around a shaft 10 a and a connecting portion 13 that connects the pair of leg portions 11 and 12. And having. 2, 8, and 9, illustration of the connecting portion 13 is omitted.

  The drive mechanism 30 is provided on each of the pair of leg portions 11 and 12. Since the drive mechanism 30 provided in each of the pair of leg portions 11 and 12 has the same configuration, the drive mechanism 30 provided in the leg portion 11 will be described below. As shown in FIG. 2, the drive mechanism 30 includes a main link 31 that is rotatably connected to the leg portion 11, and a first link that is rotatably connected between the gantry 3 and the main link 31 to tilt the frame 10. A first raising / lowering cylinder 32 and a second raising / lowering cylinder 33 which is rotatably connected between the main link 31 and the leg portion 11 and tilts the frame 10.

  The main link 31 is a substantially L-shaped member, and one end side of the main link 31 is connected to the leg portion 11 so as to be rotatable about a shaft 31a.

  The first raising / lowering cylinder 32 is expanded and contracted by supplying / discharging hydraulic oil to / from the cylinder tube. One end side of the first raising / lowering cylinder 32 is connected to the gantry 3 so as to be rotatable around the shaft 32a. It is connected to the end side so as to be rotatable about a shaft 32b.

  The second raising / lowering cylinder 33 is expanded and contracted by supplying / discharging hydraulic oil to / from the cylinder tube. One end side of the second raising / lowering cylinder 33 is connected to the other end side of the main link 31 so as to be rotatable around the shaft 33a. The leg 11 is connected to the distal end side so as to be rotatable about a shaft 33b.

  As shown in FIGS. 3 and 4, the attachment 50 includes a beam 51 that can suspend the device 5, and adapters 52 that are provided at both ends of the beam 51. The beam 51 is connected to the frame 10 via the adapter 52. The device 5 is suspended from the beam 51 via the docking head 53.

  The docking head 53 is swingably connected to the beam 51 via a hinge 54. The swinging direction of the docking head 53 is a direction perpendicular to the paper surface in FIGS. The device 5 is connected to the docking head 53 via a latch 55 provided below the docking head 53 when being transported by the frame 10, and is disconnected from the docking head 53 when being thrown into the sea. And is suspended by a rope fed out through a sheave 56 provided in the docking head 53. The docking head 53 is provided with a pair of hydraulic cylinders 57 for preventing vibration.

  With reference to FIGS. 2, 5, and 6, the rotation operation of the frame 10 by the drive mechanism 30 will be described. 5 and 6, the attachment 50 and the docking head 53 are not shown.

  When the onboard crane device 100 is not used, as shown in FIG. 2, both the first raising / lowering cylinder 32 and the second raising / lowering cylinder 33 are set to the most contracted state, and the frame 10 is positioned close to the deck 2. It becomes the stored lower storage posture. In the lower storage posture, the main link 31, the first raising / lowering cylinder 32, and the second raising / lowering cylinder 33 are substantially parallel to the deck 2, and the frame 10 is held substantially horizontally. In the lower retracted position, the first raising / lowering cylinder 32 and the second raising / lowering cylinder 33 are both in the most contracted state, and the respective piston rods have reached the stroke end, so that the frame 10 is stably stored. Is done.

  When the equipment 5 is transported using the onboard crane apparatus 100, first, the first raising / lowering cylinder 32 is driven as shown in FIG. As the first raising / lowering cylinder 32 extends, the frame 10 stands from the lower retracted posture. When the first raising / lowering cylinder 32 is in the most extended state, the frame 10 is rotated by approximately 90 degrees (the state shown in FIG. 5). After the first raising / lowering cylinder 32 reaches the maximum extension state, the second raising / lowering cylinder 33 is driven. As the second raising / lowering cylinder 33 is extended, the frame 10 is swung out to the sea side. When the second raising / lowering cylinder 33 is in the maximum extension state, the frame 10 is in the maximum swinging state and is in a state of being rotated approximately 145 degrees (the state shown in FIG. 6). Thus, by using the main link 31, the first raising / lowering cylinder 32, and the second raising / lowering cylinder 33, the frame 10 is rotated from the lower storage posture substantially parallel to the deck 2 to about 145 degrees. Is possible.

  Here, in the state of the lower storage posture in which the frame 10 is stored on the deck 2 (the state shown in FIG. 2), the work space on the deck 2 is reduced. Further, when many devices and equipment are placed on the deck 2, the frame 10 cannot be returned from the maximum swing position to the lower storage posture. As a countermeasure, the frame 10 has an upper storage posture shown in FIG. 7 that is not stored on the deck 2.

  Hereinafter, the upper storage posture will be described mainly with reference to FIG.

  The on-board crane device 100 is a mechanism for holding the upper retracted posture of the frame 10, is rotatably connected to the main link 31 and supports the frame 10 in an upright state, and is attached to and supported by the main link 31. And a support cylinder 41 as a support actuator for raising and lowering the link 40.

  A rotating plate 42 that is rotatable about a shaft 42 a that passes through the main link 31 is provided at the base end portion of the support link 40. On the outer peripheral surface of the rotating plate 42, a protruding portion 42b protruding in the radial direction is formed.

  The support cylinder 41 is extended and contracted by supplying and discharging hydraulic oil to and from the cylinder tube. One end side of the support cylinder 41 is connected to the main link 31 via a bracket 43 so as to be rotatable around a shaft 41a, and the other end side is a rotating plate. 42 is coupled to the projecting portion 42b of the shaft 42b so as to be rotatable about a shaft 41b.

  The support link 40 rotates around the shaft 42 a by the rotation of the rotating plate 42 accompanying the expansion and contraction operation of the support cylinder 41. A protrusion 40 a is formed at the distal end of the support link 40 that is the free end. The leg portion 10 of the frame 10 is provided with an engagement receiving portion 45 having a concave portion 45a with which the projection portion 40a of the support link 40 can be engaged in a state where the support link 40 stands. Similarly, the drive mechanism 30 provided in the leg portion 12 is also provided with a support link 40 and a support cylinder 41.

  The operation of the onboard crane apparatus 100 when the frame 10 is in the upper storage posture will be described.

  When the frame 10 is in a position other than the upper storage posture, the support cylinder 41 is set to the maximum extension state and the support link 40 is held along the main link 31 as shown in FIGS. The Thus, since the support link 40 is held in a state along the main link 31 when not used, it does not interfere with the frame 10 when the frame 10 performs a normal rotation operation. .

  When the frame 10 is in the upper storage position, the first raising / lowering cylinder 32 is set to the most contracted state, and the second raising / lowering cylinder 33 is set to the extended state. At this time, the frame 10 is raised by the second raising / lowering cylinder 33 to the extent that the distal end side of the support link 40 does not interfere with the frame 10 when the support link 40 is raised next.

  Next, the supporting cylinder 41 is contracted to rotate the supporting link 40 about the shaft 42a to stand. When the support cylinder 41 is in the most contracted state, the support link 40 is in the maximum standing state, and is rotated approximately 45 degrees from the main link 31 (the state shown in FIG. 7).

  From this state, the second raising / lowering cylinder 33 is contracted to slowly tilt the frame 10 so that the protrusion 40a of the support link 40 is engaged with the recess 45a of the engagement receiving portion 45 (state shown in FIG. 7). As a result, the frame 10 is in the upper retracted posture. As described above, when the first raising / lowering cylinder 32 is in the most contracted state and the second raising / lowering cylinder 33 is in the extended state, the support link 40 stands and supports the frame 10, so that the frame 10 assumes the upper storage posture. Take.

  Here, if the frame 10 is in the upper storage position with the main link 31, the first raising / lowering cylinder 32, and the second raising / lowering cylinder 33 without using the support link 40, The overturning cylinder 32 is in the most contracted state, and the piston rod reaches the stroke end, so that it does not contract any further. On the other hand, since the second raising / lowering cylinder 33 is in the extended state, when the upper retracted position is maintained for a long time, the hydraulic oil leaks from the pressure chamber of the second raising / lowering cylinder 33 and the frame 10 gradually moves. There is a risk of falling. However, in the present embodiment, since the frame 10 is supported by the support link 40, there is no possibility that the frame 10 gradually descends, and the frame 10 is stably stored above the deck 2.

  When the projection 40a of the support link 40 is engaged with the recess 45a of the engagement receiving part 45 to place the frame 10 in the upper storage position, when the thrust of the contraction operation of the second raising / lowering cylinder 33 is large, A large load is applied to the support cylinder 41 through the support link 40, and the support cylinder 41 may be damaged. In order to avoid such a situation, in the state where the support link 40 stands up, the pressure of the hydraulic oil that operates the second raising / lowering cylinder 33 is set lower than the pressure during normal operation. In this way, the interlock function operates in the standing state of the support link 40.

  Next, a connection mechanism for connecting the attachment 50 to the frame 10 will be described with reference to FIGS.

  The frame 10 includes columnar support pins 60 provided so as to protrude from the mutually facing inner surfaces 11 a and 12 a of the leg portions 11 and 12 and for supporting the attachment 50. The support pins 60 provided on each of the pair of legs 11 and 12 are provided to face each other.

  As shown in FIG. 2, the adapter 52 of the attachment 50 includes an opening 70 into which the support pin 60 is inserted so as to be relatively rotatable. The opening 70 has an inlet 70a for guiding the support pin 60 to the inside, and an arc 70b in which the outer peripheral surface of the support pin 60 is in sliding contact.

  As shown in FIGS. 1, 2, and 4, the attachment 50 is disposed on the deck 2 via a support base 80 before being connected to the frame 10. Specifically, the attachment 51 is disposed on the deck 2 by placing the beam 51 connected to the docking head 53 on the support base 80. As shown in FIG. 1, the attachment 50 is disposed between the pair of leg portions 11 and 12 so that the beam 51 is parallel to the connecting portion 13 of the frame 10. In this state, the device 5 is not yet connected to the docking head 53.

  The reason why the attachment 50 is disposed on the deck 2 via the support base 80 is that the latch 55 is provided at the bottom of the docking head 53, so that the docking head 53 cannot be disposed directly on the deck 2. Therefore, if the docking head 53 can be disposed directly on the deck 2, the support base 80 is not necessary.

  In a state where the attachment 50 is disposed on the deck 2 via the support base 80, as shown in FIG. 2, the opening portion 70 has an inlet portion 70a opening toward the deck 2, and a support pin formed by the rotation of the frame 10. Located on 60 orbits. In this state, the attachment pin 50 is scooped up by the frame 10 by inserting the support pin 60 into the opening 70 of the adapter 52 in the process of rotating from the lower storage posture in which the frame 10 is held substantially horizontally. Connected. In this way, the attachment 50 can be connected to the frame 10 simply by rotating the frame 10. 8A shows a state immediately before the support pin 60 is inserted into the opening 70 and the attachment 50 is scooped up to the frame 10, and FIG. 8B and FIG. 3 show the attachment 50 scooping up to the frame 10. The state after being raised is shown.

  The entrance 70a of the opening 70 is formed in a tapered shape so that the support pin 60 can be easily guided to the inside. The arc portion 70b of the opening 70 has an inner diameter that is larger than the outer diameter of the support pin 60 so that the outer peripheral surface of the support pin 60 is in smooth sliding contact.

  After the attachment 50 is scooped up by the frame 10, the weight of the attachment 50 and the docking head 53 is supported by the support pin 60 inserted so as to be rotatable relative to the opening 70 of the adapter 52. Therefore, as can be seen from FIGS. 8A and 8B, the support pin 60 relatively rotates in the opening 70 during the rotation of the frame 10, so that the posture of the adapter 52 does not change.

  The onboard crane device 100 includes a lock device 81 for fixing the attachment 50 to the frame 10 after the attachment 50 is connected to the frame 10. Hereinafter, a lock mechanism using the lock device 81 will be described with reference to FIGS.

  The lock device 81 includes a lock pin 82 provided on the legs 11 and 12 for fixing the adapter 52 to the frame 10, and a hydraulic cylinder 83 as a lock pin driving device for moving the lock pin 82 forward.

  The hydraulic cylinder 83 is disposed on the upper surfaces of the leg portions 11 and 12, and is expanded and contracted by supplying and discharging hydraulic oil to and from the cylinder tube. The lock pin 82 is connected to the tip of the piston rod of the hydraulic cylinder 83 and moves forward or backward as the hydraulic cylinder 83 expands and contracts. The hydraulic cylinder 83 is operated by operating an operation panel disposed on the deck 2. The hydraulic cylinder 83 is in a contracted state in a normal state, and when the adapter 52 is fixed to the frame 10, the hydraulic cylinder 83 is extended by operating the operation panel to advance the lock pin 82.

  The frame 10 includes a stopper 61 that is provided on the inner surfaces 11 a and 12 a of the leg portions 11 and 12 and restricts relative rotation of the adapter 52 with respect to the frame 10.

  The adapter 52 protrudes from the outer peripheral surface of the adapter 52 and is opposed to the lock pin 82 in a state in which the stopper 61 contacts the claw piece 71 while the frame 61 rotates and the stopper 61 contacts the claw piece 71. And a lock pin hole 72.

  A method of fixing the attachment 50 to the frame 10 will be described with reference to FIG. As shown in FIGS. 8A and 8B, the posture of the adapter 52 does not change while the stopper 61 is not in contact with the claw piece 71 during the rotation of the frame 10. When the frame 10 rotates from the state shown in FIG. 8B, the stopper 61 of the frame 10 comes into contact with the claw piece 71 of the adapter 52, and the relative rotation of the adapter 52 with respect to the frame 10 is restricted by the stopper 61. When the stopper 61 is in contact with the claw piece 71, the lock pin 82 and the lock pin hole 72 face each other.

  After the stopper 61 comes into contact with the claw piece 71, the frame 10 is rotated until the claw piece 71 is pressed by the stopper 61 and the posture of the adapter 52 changes (the state shown in FIG. 8C). In this state, the adapter 52 exerts a force to rotate clockwise around the support pin 60 due to its own weight of the docking head 53, so that the claw piece 71 is pressed against the stopper 61 and the relative position of the adapter 52 with respect to the frame 10. Is securely fixed. Therefore, even if the docking head 53 is swung by wind or the like, the relative position of the adapter 52 with respect to the frame 10 does not change.

  In this way, the hydraulic cylinder 83 is operated in a state where the relative position of the adapter 52 with respect to the frame 10 is securely fixed. As a result, the lock pin 82 moves forward and is inserted into the lock pin hole 72, and the adapter 52 is fixed to the frame 10. After the adapter 52 is fixed to the frame 10 via the lock pin 82, the frame 10 and the adapter 52 rotate together. In this way, the attachment 50 is fixed to the frame 10.

  After the frame 10 and the attachment 50 are fixed, the frame 10 is returned to the position shown in FIG. 9A, the device 5 is lifted through the sheave 56 at that position, and the device 5 is connected to the docking head 53. Then, as shown in FIG. 9B, the frame 10 is rotated to the maximum swing position, and the device 5 is separated from the docking head and thrown into the sea. The equipment 5 is lifted or put into the sea using a winch disposed on the deck 2.

  The stopper 61 provided on the frame 10 also has a guide mechanism that guides the adapter 52 when the frame 10 rotates to scoop up the attachment 50. Also, as shown in FIGS. 1 to 3, guides 62 are provided on the inner surfaces 11 a and 12 a of the leg portions 11 and 12 of the frame 10 on the side opposite to the stopper 61 with the support pin 60 as the center.

  The stopper 61 and the guide 62 guide the adapter 52 between each other as shown in FIG. 8A when the frame 10 rotates to scoop up the attachment 50. Therefore, when the frame 10 rotates and scoops up the attachment 50, the support pin 60 smoothly moves to the opening 70 even when the positions of the support pin 60 and the opening 70 of the adapter 52 are shifted. Is inserted. Thus, the stopper 61 and the guide 62 have a function of positioning the support pin 60 and the opening 70.

  Further, if the docking head 53 can be directly arranged on the deck 2, the support base 80 is not necessary. In that case, the beam 51 and the adapter 52 are inclined with respect to the docking head 53 by the hinge 54 of the docking head 53, and the entrance 70 a of the opening 70 does not open toward the deck 2. Even in such a case, when the frame 10 rotates and scoops up the attachment 50, the adapter 52 is guided between the stopper 61 and the guide 62 and is forcibly raised, so that the support pin 60 opens smoothly. It will be inserted into the part 70.

  According to the above embodiment, there exist the effects shown below.

  Since the onboard crane apparatus 100 includes the support link 40 that stands up and supports the frame 10 when the first raising / lowering cylinder 32 is in the most contracted state and the second raising / lowering cylinder 33 is in the extended state, the frame 10 is positioned above the deck 2. Can be stored stably. Further, the onboard crane device 100 does not occupy the deck 2 other than the gantry 3 when the frame 10 takes the upper storage posture. Therefore, the deck can be used effectively.

  Since the attachment 50 is scooped up and connected to the frame 10 in the process of rotating the frame 10 from the lower retracted posture, the attachment 50 can be connected to the frame 10 simply by rotating the frame 10. Accordingly, when the attachment 50 and the device 5 are connected to the frame 10, work at a high place does not occur, so that workability and safety are improved.

  The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

(1) For example, in the said embodiment, after rotating the flame | frame 10 and scooping up the attachment 50, it demonstrated that the apparatus 5 was connected with the docking head 53 connected with the attachment 50. FIG. Alternatively, the device 5 may be connected to the docking head 53 in advance before the attachment 50 is scooped up by the frame 10.

(2) In the above embodiment, the case where the device 5 is suspended from the beam 51 via the docking head 53 has been described. Instead of this, a sheave may be suspended from the beam 51, and the device 5 may be suspended via the sheave.

(3) In the said embodiment, the case where the flame | frame 10 was a portal frame | frame which has a pair of leg parts 11 and 12 and the connection part 13 was demonstrated. However, the shape of the frame 10 is not limited, and may be a frame including only one arm. In that case, the device 5 may be directly suspended from the frame 10.

(4) In the above embodiment, the case where the support link 40 is tilted by the support cylinder 41 has been described. However, the support link 40 may be tilted by an actuator other than the support cylinder 41, for example, an electric motor.

DESCRIPTION OF SYMBOLS 100 Ship crane apparatus 1 Ship 2 Deck 3 Base 5 Equipment 10 Frame 11, 12 Leg part 31 Main link 32 First raising cylinder 33 Second raising cylinder 40 Support link 41 Support cylinder 45 Engagement receiving part 50 Attachment 51 Beam 52 Adapter 53 Docking Head 61 Stopper 62 Guide 70 Opening 71 Claw Piece 72 Lock Pin Hole 82 Lock Pin

Claims (5)

An on-board crane device installed on a ship,
A frame that is rotatably supported by a pedestal arranged on the ship, and capable of hanging a transported object;
A main link rotatably connected to the frame;
A first raising / lowering cylinder which is pivotably connected between the gantry and the main link, and raises and lowers the frame;
A second raising / lowering cylinder which is pivotably connected between the main link and the frame and raises and lowers the frame;
A support link rotatably connected to the main link and supporting the frame in an upright state;
A support actuator attached to the main link and raising and lowering the support link,
The onboard crane apparatus, wherein the support link stands and supports the frame when the first raising / lowering cylinder is in a fully contracted state and the second raising / lowering cylinder is in an extended state.   2. The onboard crane device according to claim 1, wherein the frame is provided with an engagement receiving portion that engages with a front end portion of the support link in a state where the support link stands.   The onboard crane device according to claim 1 or 2, wherein the support link is held in a state along the main link when not used.   The pressure of the working fluid that operates the second raising / lowering cylinder in the standing state of the support link is set lower than the pressure during normal operation. The shipboard crane apparatus as described in one.   The said frame takes the lower storage attitude | position hold | maintained substantially horizontal, when the said 1st raising cylinder and the said 2nd raising cylinder are set to the most contracted state. 4. The onboard crane device according to any one of 4 above.

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