JP7229958B2 - crane - Google Patents

Description

The present invention relates to cranes.

A crane equipped with a trolley for running a sling along the girder uses wires to move the trolley and the sling. The wire is unwound from a drum provided on the support structure of the crane, stretched along the extending direction of the girder, and tied to the trolley and the sling.
In this structure, the longer the girder, the longer the wire stretched along the direction in which the girder extends. Therefore, the wire bends downward under its own weight, causing the sling to swing, which may reduce cargo handling efficiency.
The crane of Patent Literature 1 includes a catenary support that suppresses bending of the wire. The catenary support is arranged below the wire in the direction of travel of the trolley and is connected with the trolley by a rope. One end of the rope is fixed to the girder, guided toward the catenary support by a sheave called a dead sheave, directed toward the trolley by a guide sheave provided on the catenary support, and the other end is fixed to the trolley. The rope between the trolley and the guide sheave is called the running rope. The catenary support follows the running of the trolley and supports the wire from below to suppress deflection. In the case of a movable girder in which a part of the girder rotates upward, the seaside catenary support is held by the movable girder, so when the movable girder rotates, the running rope also rotates, forming a crane such as a girder. come into contact with other parts. If the trolley is run in this state, the contacting members and the running rope will slide and be damaged, so a crane that has a structure that prevents sliding is preferable.
On the other hand, Patent Document 2 does not provide a catenary support mechanism. A structure provided with a guide roller that contacts and guides the wire in a moving state is described.

JP 2012-201450 A JP 2017-178581 A

The structure of Patent Document 2 is useful in that it is possible to suppress the sliding of the wire while the girder is rotated. On the other hand, in the structure of Patent Document 1, when the girder is rotated, the running rope also comes into contact with the dead sheave, so a structure that can prevent contact with not only the girder and the wire but also the dead sheave is preferable.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a crane equipped with a catenary support in which a trolley can travel without damaging the running rope while the movable girder is tilted.

In order to solve the above-described problems, the present invention provides a fixed girder, a connecting portion provided at one end of the fixed girder in the extending direction, a movable girder pivotally supported by the connecting portion and rotating upward, and the fixed girder. a trolley that runs along and below the girder and the movable girder; a first catenary support that runs below the movable girder at a position farther from the fixed girder than the trolley; A crane comprising a first rope that is stretched and connects the trolley and the connecting portion via a first support sheave of the first catenary support, the first rope from the trolley to the first catenary support. A first running rope that is a portion of the rope and runs together with the trolley, a first dead rope that is a portion of the first rope from the connecting portion to the first catenary support and does not run together with the trolley, and the extending direction. a first dead sheave provided below the connecting part about the horizontal direction orthogonal to the axis, guiding the first dead rope and directing its direction to the first catenary support from below; and a plane with the first running rope It is provided so as to be adjacent to the first dead sheave in its axial direction and rotatable independently at a position where it overlaps with the first dead rope when viewed from above, and only when the movable girder rotates upward. It is characterized by comprising a first guide roller that guides the first running rope.

In the present invention, when the movable girder rotates upward, the running rope is guided by the guide rollers without coming into contact with the fixed girder, movable girder, first dead sheave and first dead rope.
Therefore, even when the movable girder is rotated upward, the trolley can be made to traverse without damage due to sliding of other members constituting the crane with the rope.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing the crane according to the present embodiment, in which (a) is a diagram in which the extending directions of the movable girder and the fixed girder are aligned, and (b) is a diagram in which the movable girder is rotated upward from (a). It is a diagram. 2A is a top view and FIG. 2B is an A1-A1 end view of FIG. 1A. FIG. 1. It is a perspective view which shows the catenary support mechanism of FIG. 1, Comprising: (a) is a figure corresponding to Fig.1 (a), (b) is a figure corresponding to FIG.1(b). FIG. 4 is a view in the direction of arrow A2 in FIG. 3, with fixed beams omitted. FIG. 5A is a detailed view of the disc-shaped guide member in FIG. 4, where (a) is a view viewed from the same direction as in FIG. is a cross-sectional view along A4-A4. It is a top view which shows the inner rope and disk-shaped guide member of Fig.3 (a), Comprising: (a) is a figure corresponding to FIG. 4, (b) is a modification of (a). It is a detailed view of the disk-shaped guide member of Fig.6 (a).

Preferred embodiments of the present invention will be described in detail below with reference to the drawings. First, a schematic configuration of a crane according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. Here, as the crane 1, a wharf crane that handles container ships 48 and containers 10 is exemplified. A crane 1 shown in FIG.

The support structures 3 are struts for supporting other structures of the crane 1, and a pair of support structures are arranged facing each other in the X direction in FIG. The travel device 7 is provided at the lower end of the support structure 3 and includes wheels and a driving mechanism for causing the crane 1 to travel in the Y direction as the travel direction. The fixed girder 9 is a girder supported on the upper part of the support structure 3 and extending in the X direction as the transverse direction, which is one direction perpendicular to the running direction. The connecting part 11 is a structure that connects the fixed girder 9 and the movable girder 13 with a shaft 12 parallel to the Y direction shown in FIG. . The movable girder 13 is a girder that is connected to the connecting portion 11 and pivots upward in the Z direction about the shaft 12 . The fixed girder 9 and the movable girder 13 in FIG. 2 are of a monobox type consisting of one girder. As shown in FIG. 2, the connecting portion 11 includes a shaft 12 and shaft holding plates 12a and 12b arranged on opposing surfaces of the movable beam 13 and the fixed beam 9 to hold the shaft 12. As shown in FIG.

The trolley 15 is a trolley supported by the fixed girder 9 and the movable girder 13 and pulled by a traveling wire (not shown) to travel in the X direction. The spreader 17 is a lifting device that is supported by a hoisting wire 19 on the trolley 15 and moves in the Z direction to lift the container 10 .
The hoist wire 19 is a rope that supports the spreader 17 and moves it up and down. One end of the hoisting wire 19 is let out from a drum 27 arranged in a machine room 25 provided in the upper part of the fixed girder 9 toward the land side in the X direction. The end sheave 9a can change the direction to the sea side in the X direction. The hoisting wire 19 whose direction has been changed reaches the spreader sheave 17a provided on the spreader 17 via the first trolley sheave 15a provided on the trolley 15, and further through the second trolley sheave 15b provided on the trolley 15. You can turn to the sea side in the X direction. The end of the hoisting wire 19 is fixed to the X-direction sea-side end of the movable girder 13 . In this configuration, the spreader 17 moves up and down by rotating the drum 27 .
The catenary support mechanism 21 is a mechanism that supports the traveling wire and the hoisting wire 19 extending in the X direction from below, thereby suppressing downward deflection of these wires.
The above is the description of the schematic configuration of the crane 1 according to the present embodiment.

Next, details of the catenary support mechanism 21 will be described with reference to FIGS. 1 to 7. FIG.
As shown in FIG. 3 , the catenary support mechanism 21 includes a first catenary support 31 , a second catenary support 33 , an inner rope 35 , disc-shaped guide mechanisms 37 a and 37 b and an outer rope 39 .

The first catenary support 31 is a running body that supports the running wire along the movable girder 13 and the hoisting wire 19 from below, and as shown in FIG. Prepare. The first carriage 31a is a vehicle having a U shape when viewed in the X direction, and support rollers (not shown) provided in the middle of the U shape support the traveling wire and the hoisting wire 19 from below to suppress deflection. The first wheels 31b roll on rails 13a provided at both ends in the width direction of the upper surface of the movable girder 13 shown in FIGS. is a wheel that moves in the X direction. The first wheels 31b are arranged inside both ends of the U-shape of the first truck 31a so that the axial direction thereof is directed in the Y direction. The first support sheave 31c is a pulley that guides the inner rope 35, and is provided in the middle of the U shape with the Y direction as the axial direction, as shown in FIG. The first catenary support 31 is arranged on the sea side in the X direction from the trolley 15 and travels at a position farther from the fixed girder 9 than the trolley 15.例文帳に追加

The second catenary support 33 is a running body that supports the running wire along the fixed girder 9 and the hoisting wire 19 from below, and as shown in FIG. Prepare. The second carriage 33a is a vehicle having a U shape when viewed from the X direction, and supporting rollers (not shown) provided in the middle of the U shape support the traveling wire and the hoisting wire 19 from below to suppress deflection. The second wheels 33b have the same shape as the first wheels 31b, and roll on rails 9b provided at both ends in the width direction of the upper surface of the fixed girder 9 shown in FIG. move to The function of the second support sheave 33c is similar to that of the first support sheave 31c. The second catenary support 33 is provided at a position facing the first catenary support 31 with the trolley 15 interposed therebetween, and travels on the land side of the trolley 15 in the X direction.

The inner rope 35 is a rope that allows the first catenary support 31 and the second catenary support 33 to follow the movement of the trolley 15 by connecting the first catenary support 31 and the second catenary support 33 to the trolley 15 . As shown in FIG. 3, the inner rope 35 includes a first rope 35a and a second rope 35b.
The first rope 35 a is a rope that is stretched downward from the connecting portion 11 and connects the trolley 15 and the connecting portion 11 via the first support sheave 31 c of the first catenary support 31 . One end of the first rope 35a is fixed to the fixing portion 11a of the connecting portion 11 as shown in FIG. 2, and the other end is fixed to the anchor 15c of the trolley 15 as shown in FIG. Since the movable girder 13 shown in FIG. 2 is a monobox type, the fixed part 11a is provided on the shaft holding plate 12a of the connecting part 11 as shown in FIG. 2(b), and the first rope 35a is fixed. is a ring. When the movable girder 13 is composed of a plurality of beams, the fixing portion 11a may be provided on a tie beam that connects the plurality of beams in the connecting portion 11. FIG.

Of the first rope 35a shown in FIG. 3, the portion of the first rope 35a from the anchor 15c of the trolley 15 to the first support sheave 31c of the first catenary support 31 is called a first running rope 38a. Since the first running rope 38 a is a rope that connects the running bodies, it runs together with the trolley 15 and the first catenary support 31 . Since the first catenary support 31 is connected to the trolley 15 via the first support sheave 31c, it acts as a movable pulley for the trolley 15 and travels at half the traveling speed of the trolley 15.
Of the first rope 35a shown in FIG. 3, the portion of the first rope 35a from the fixed portion 11a of the connecting portion 11 to the first support sheave 31c of the first catenary support 31 is called a first dead rope 38b. Since one end of the first dead rope 38 b is fixed to the fixed portion 11 a of the connecting portion 11 , it does not travel together with the trolley 15 and the first catenary support 31 . In FIG. 3, the first dead rope 38b is positioned above the first running rope 38a.

Since the first catenary support 31 travels along the movable girder 13, the direction of travel changes as the movable girder 13 rotates. For example, in the states shown in FIGS. 1A and 3A, the direction in which the first catenary support 31 moves is the direction of B1, which is the sea side in the X direction. In the states shown in FIGS. 1(b) and 3(b), the direction of B2 inclined upward according to the rotation angle α (see FIG. 1(b)) of the movable girder 13 from the sea side in the X direction is the second direction. It becomes the moving direction of 1 catenary support 31. Along with this, the route of the first rope 35a is also inclined upward.

The second rope 35 b is a rope that is stretched downward from the connecting portion 11 and connects the trolley 15 and the connecting portion 11 via the second support sheave 33 c of the second catenary support 33 . One end of the second rope 35b is fixed to the fixing portion 11b of the connecting portion 11 shown in FIG. 2(b), and the other end is fixed to the anchor 15c of the trolley 15 shown in FIG. Since FIG. 2B illustrates a monobox-type fixed beam 9 , the fixed portion 11 b is a ring provided on the shaft holding plate 12 b of the connecting portion 11 . When the fixed girder 9 is composed of a plurality of beams, the fixed portion 11b may be provided on a tie beam that connects the plurality of beams in the connecting portion 11. FIG.

Of the second rope 35b shown in FIG. 3, the portion of the second rope 35b from the trolley 15 to the second support sheave 33c of the second catenary support 33 is called a second running rope 40a. Since the second running rope 40 a is a rope that connects the running bodies, it runs together with the trolley 15 and the second catenary support 33 . The second catenary support 33 travels at half the traveling speed of the trolley 15, like the first catenary support 31 does.
Of the second rope 35b shown in FIG. 3, the portion of the second rope 35b from the fixed portion 11b of the connecting portion 11 to the second support sheave 33c of the second catenary support 33 is called a second dead rope 40b. Since one end of the second dead rope 40b is fixed to the fixed portion 11b, it does not travel together with the trolley 15. As shown in FIG. Since the second catenary support 33 runs along the fixed girder 9, the running direction does not change even if the movable girder 13 rotates. Therefore, the route of the second rope 35b does not change as the movable girder 13 rotates. In FIG. 3, the second dead rope 40b is positioned above the second running rope 40a.

A disc-shaped guide mechanism 37a shown in FIG. 5 is a member that guides the first rope 35a, and includes a first dead sheave 45a, a first guide roller 47a, first guide portions 49a and 49b, and a first auxiliary guide portion 52a.
The first dead sheave 45a is a disk-shaped member that guides the first dead rope 38b that is stretched downward from the fixed portion 11a of the connecting portion 11 and directs its direction toward the first catenary support 31 from below. The first dead sheave 45a is provided below the connecting portion 11 around a first fixed shaft 81a extending in the Y direction, which is a horizontal direction perpendicular to the X direction, and is provided below the connecting portion 11. 38b make contact. Since the first dead rope 38b does not travel with the trolley 15, it does not move relative to the first dead sheave 45a. Therefore, the first dead sheave 45a may have a non-rotatable structure.
Both ends of the first fixed shaft 81a of the first dead sheave 45a are first dead sheave fixing plates which are plates projecting from the shaft holding plate 12a of the connecting portion 11 to the land side in the X direction so as to sandwich the first dead sheave 45a in the Y direction. 83a and the first dual-use fixing plate 85a.

The first guide roller 47a is a roller that guides the first running rope 38a only when the movable beam 13 shown in FIG. 1(b) rotates upward.
As shown in FIG. 6A, the first guide roller 47a is arranged at a position overlapping with the first running rope 38a in plan view but not overlapping with the first dead rope 38b. Specifically, the first guide roller 47a is positioned directly above the first running rope 38a in a state in which the extending directions of the movable girder 13 and the fixed girder 9 are aligned as shown in FIGS. placed.
As shown in FIG. 5, the first guide roller 47a is provided so as to be independently rotatable about a first movable shaft 87a, which is the rotation shaft of itself adjacent to the first dead sheave 45a in the axial direction. In FIG. 5, the first movable shaft 87a is arranged coaxially with the first fixed shaft 81a of the first dead sheave 45a. Both ends of the first movable shaft 87a protrude from the first dual-use fixing plate 85a and the shaft holding plate 12a of the connecting portion 11 to the X-direction land side so as to sandwich the first guide roller 47a in cooperation with the first dual-use fixing plate 85a. It is held by the provided first running sheave holding plate 89a.

When the movable girder 13 rotates upward while the trolley 15 is positioned below the fixed girder 9 as shown in FIG. The fixed portion with the first support sheave 31c does not move, but the connecting portion with the first support sheave 31c rotates upward. Therefore, the first running rope 38a rotates upward around the fixing portion with the anchor 15c and approaches the connecting portion 11. As shown in FIG. However, when the movable girder 13 rotates upward, the first guide roller 47a positioned below the connecting portion 11 first contacts the first running rope 38a. Therefore, the first running rope 38a is guided by the first guide rollers 47a without contacting the fixed girder 9, the movable girder 13, the first dead sheave 45a and the first dead rope 38b. When the trolley 15 is moved in the X direction in this state, the first running rope 38 a moves in the same direction as the trolley 15 . At this time, the first guide roller 47a rotates independently of the first dead sheave 45a to guide the first running rope 38a. Therefore, even when the movable girder 13 is rotated upward as shown in FIGS. 1(b) and 3(b), the other members constituting the crane 1 and the first running rope 38a slide and are damaged. The trolley 15 can be traversed without any trouble.

The following example is given as a case where the trolley 15 is positioned below the fixed girder 9 and the movable girder 13 is rotated upward so that the trolley 15 needs to be moved in a state where cargo handling is not performed on the ship.
First, the spreader 17 may be replaced. At the time of replacement, the spreader 17 is moved by the trolley 15 to the area R1 of the wharf below the back reach, which is the extension area of the fixed girder 9 on the land side in the X direction, as shown in FIG. 1(b). If the spreader 17 is replaced while cargo handling is not being performed on the ship as shown in FIG.

Next, there is a case where the crane 1 is used for cargo handling of the container 10 stored in the storage area R2 below the backreach shown in FIG. 1(b). If the crane 1 can be used for cargo handling of the container 10 when the cargo handling is not performed on the ship, the crane 1 which is not normally used when the cargo handling is not performed on the ship can be utilized, and cargo handling efficiency is improved.

The first guide roller 47a of the disc-shaped guide mechanism 37a is arranged coaxially with the shaft of the first dead sheave 45a, the first guide roller 47a is rotatable, and the first dead sheave 45a is not rotatable. Therefore, the disc-shaped guide mechanism 37a corresponds to a structure in which an existing dead sheave for catenary support is divided into two sheaves and one of the sheaves is rotatable.
Therefore, the disc-shaped guide mechanism 37a is also advantageous in that it can be installed in a crane equipped with an existing catenary support mechanism by replacing the existing dead sheave without extensive modification of the crane.

The diameter and axial width of the first dead sheave 45a and the first guide roller 47a can be set appropriately. However, the first running rope 38a moves relative to the first dead sheave 45a. Therefore, in order to prevent the first running rope 38a from moving in the Y direction and coming off the first dead sheave 45a during movement, the axial width W1 of the first guide roller 47a shown in FIG. It is preferably wider than the directional width W2.

The first guide portions 49a and 49b are arranged to move the first running rope 38a when the movable beam 13 rotates upward while the position of the first running rope 38a on the plane with respect to the first guide roller 47a is deviated in the Y direction. to the first guide roller 47a.
As shown in FIG. 6A, the first guide roller 47a is provided at a position overlapping the first running rope 38a in a plan view, but it may be slightly displaced in the Y direction due to being blown by the wind or the like. In this case, the first guide portions 49a and 49b are structures for correcting the deviation and aligning the position of the first running rope 38a on the plane of the first guide roller 47a.

The first guide portions 49a and 49b shown in FIG. 5 project downward from the axial end portion of the first guide roller 47a and are inclined in the axial direction away from the first movable shaft 87a, which is the rotating shaft. It is a plate-like member. The first guide portions 49a and 49b are provided at both ends of the first guide roller 47a in the axial direction, and are widened and inclined in the axial direction. The first guide portion 49a is fixed to the first running sheave holding plate 89a with bolts or the like via a connecting plate 91a provided on the surface of the first running sheave holding plate 89a opposite to the first guide roller 47a. be. The first guide portion 49b protrudes from the axial end of the first guide roller 47a on the side of the first dead sheave 45a and extends to a position beyond the first dead sheave 45a. The projecting end of the first guide portion 49b is bolted to the first dead sheave fixing plate 83a via a connecting plate 93a provided on the surface of the first dead sheave fixing plate 83a opposite to the first guide roller 47a. is fixed with . The first auxiliary guide portion 52a is a plate-like member projecting from the end of the first dead sheave 45a on the side of the first dead sheave fixing plate 83a so as to be inclined away from the first fixed shaft 81a. The first auxiliary guide portion 52a is a member that guides the first dead rope 38b to the first dead sheave 45a, and is fixed to the connecting plate 93a in the middle.
With this structure, even if the movable beam 13 rotates upward while the position of the first running rope 38a relative to the first guide roller 47a on the plane is deviated in the Y direction, are overlapped, the first running rope 38a contacts the first guide portions 49a and 49b. The contacting first running rope 38a moves toward the first guide roller 47a along the contact surface and contacts the first guide roller 47a. Therefore, even if the position of the first running rope 38a on the plane is slightly deviated from the first guide roller 47a, the first running rope 38a is held by the first guide roller 47a.

The length of the first guide portion 49a in the Y direction, which is the axial direction of the first guide roller 47a, is appropriately set according to the assumed displacement of the first running rope 38a in the Y direction with respect to the first guide roller 47a. Specifically, the length that extends below the first dead sheave 45a is preferable. This configuration also prevents the first running rope 38a from contacting the first dead sheave 45a when the first running rope 38a is displaced in the Y direction with respect to the first guide roller 47a.
The length of the first guide portion 49b in the Y direction preferably extends to a position beyond the first dead sheave 45a, as shown in FIG. 5(a). In this configuration, the first guide portion 49b is always positioned below the first dead sheave 45a in the Y direction. It contacts the first guide portion 49b before the dead sheave 45a. Therefore, the first running rope 38a does not contact the first dead sheave 45a, and it is possible to more reliably prevent the first running rope 38a from contacting the first dead rope 38b and being damaged.

The disc-shaped guide mechanism 37b is provided on the land side in the X direction from the disc-shaped guide mechanism 37a, and is a member that guides the first rope 35a and the second rope 35b. The disc-shaped guide mechanism 37b includes a second dead sheave 45b, a second guide roller 47b, second guide portions 50a and 50b, and a second auxiliary guide portion 52b, as shown in FIG.
The second dead sheave 45b is a disk-shaped member that guides the second dead rope 40b that is stretched downward from the fixing portion 11b of the connecting portion 11 and directs its direction toward the second catenary support 33 from below. The second dead sheave 45b is provided below the connecting portion 11 with the Y direction, which is the horizontal direction orthogonal to the X direction, as the axis, and the first dead rope 38b contacts the circumferential surface of the disk. The first dead rope 38b may have a non-rotatable structure like the first dead sheave 45a. Both ends of the second fixed shaft 81b of the second dead sheave 45b are second dead sheave fixing plates which are plates projecting from the shaft holding plate 12b of the connecting portion 11 to the sea side in the X direction so as to sandwich the second dead sheave 45b in the Y direction. 83b and the second dual-use fixing plate 85b.

The second guide roller 47b is a roller that guides the first running rope 38a only when the movable girder 13 shown in FIG. 1(b) rotates upward.
As shown in FIG. 6A, the second guide roller 47b is arranged at a position overlapping with the first running rope 38a in plan view but not overlapping with the second dead rope 40b. Specifically, the second guide roller 47b is positioned above the first running rope 38a with the extending directions of the movable girder 13 and the fixed girder 9 matching, as shown in FIGS. 1(a) and 3(a). placed.
Like the first guide roller 47a, the second guide roller 47b is axially adjacent to the second fixed shaft 81b of the second dead sheave 45b and is rotatable independently. In FIG. 7, the second fixed shaft 81b and the second movable shaft 87b, which is its own rotating shaft, are arranged coaxially. Both ends of the second movable shaft 87b extend from the shaft holding plate 12b of the connecting portion 11 in the X direction so as to sandwich the second dual-use fixed plate 85b and the second guide roller 47b in cooperation with the second dual-purpose fixed plate 85b in the Y direction. It is fixed to the second running sheave holding plate 89b, which is a plate protruding toward the sea.

In this configuration, the second guide roller 47b is arranged at a position not overlapping the second dead sheave 45b in plan view. Further, the second guide roller 47b is arranged above the first running rope 38a in the state shown in FIG. 3(a), and moves to the first running rope 38a only when the movable girder 13 shown in FIG. 3(b) rotates upward. to guide
Therefore, when the movable girder 13 rotates upward, the first running rope 38a is guided by the second guide roller 47b without contacting the second dead sheave 45b and the second dead rope 40b. When the trolley 15 is moved in the X direction in this state, the first running rope 38a moves in the same direction as the trolley 15, but the second guide roller 47b also rotates independently with respect to the second dead sheave 45b. guide.
Therefore, even when the movable girder 13 is rotated upward as shown in FIGS. , the trolley 15 is traversed.

Similar to the disk-shaped guide mechanism 37a, the disk-shaped guide mechanism 37b corresponds to a structure in which an existing dead sheave for catenary support is divided into two sheaves and one of the sheaves is rotatable. Therefore, by replacing the dead sheave of the existing catenary support mechanism, the disk-shaped guide mechanism 37b can be installed without extensive modification of the existing crane.

The axial width W3 of the second guide roller 47b shown in FIG. 7 is preferably wider than the axial width W4 of the second dead sheave 45b. The reason is the same as that of the first guide roller 47a and the first dead sheave 45a.

The second guide portions 50a and 50b are arranged to move the second running rope 40a when the movable girder 13 rotates upward while the position of the first running rope 38a on the plane with respect to the second guide roller 47b is deviated in the Y direction. to the second guide roller 47b.
The specific structure of the second guide portions 50a and 50b is the same as that of the first guide portion 49a. It is a projecting plate member. The effect is also the same. The second guide portion 50a is held by the second running sheave holding plate 89b through a connecting plate 91b having the same shape as the connecting plate 91a. The second guide portion 50a is fixed to the second dead sheave fixing plate 83b via a connecting plate 93b having the same shape as the connecting plate 91b.
The second auxiliary guide portion 52b is a plate-like member projecting from the end of the second dead sheave 45b on the side of the second dead sheave fixing plate 83b so as to be inclined away from the second fixing shaft 81b. The second auxiliary guide portion 52b is a member that guides the second dead rope 40b to the second dead sheave 45b, and is fixed to the connecting plate 93b in the middle.

The first dead rope 38b and the second dead rope 40b, as shown in FIG. It is preferable that they are inclined at a predetermined angle β in opposite directions to each other in the Y direction, which is the width direction of the girder in a plan view.

In this configuration, unless the first running rope 38a is greatly moved in the Y direction by the wind, the first running rope 38a contacts the first dead rope 38b and the second dead rope 40b even if the movable girder 13 rotates upward. do not. In addition, by making the directions of inclination of the first dead rope 38b and the second dead rope 40b opposite to each other in the Y direction, the stress in the Y direction applied to the first running rope 38a due to the inclination can be canceled out.

Also, in FIG. 6A, the first dead sheave 45a and the second dead sheave 45b are arranged to face each other in the Y direction with the first guide roller 47a and the second guide roller 47b interposed therebetween in plan view. The fixing portion 11a and the fixing portion 11b are also arranged in the same direction as the first dead sheave 45a and the second dead sheave 45b across the first guide roller 47a and the second guide roller 47b in plan view. In this configuration, the planar positional relationship of the first dead sheave 45a and the second dead sheave 45b with respect to the first running rope 38a is the same as the planar positional relationship of the first dead rope 38b and the second dead rope 40b.
Therefore, the first dead sheave 45a and the second dead sheave 45b reliably guide the first dead rope 38b and the second dead rope 40b, respectively.
However, if the first dead rope 38b and the second dead rope 40b do not overlap the first running rope 38a and the second running rope 40a on the plane, the arrangement of the first dead sheave 45a and the second dead sheave 45b is It is not limited to facing arrangement.
For example, as shown in FIG. 6B, the first dead sheave 45a and the second dead sheave 45b may be arranged in parallel on the same side in the Y direction with respect to the first guide roller 47a and the second guide roller 47b. In this case, the first dead rope 38b and the second dead rope 40b are inclined at a predetermined angle β in the same direction in the Y direction in plan view with respect to the first running rope 38a.
The configuration shown in FIG. 6(b) is for the case where other facilities 81 such as lighting, electrical components, and electrical equipment are arranged adjacent to the path of the first dead rope 38b shown in FIG. 6(a) in the Y direction. useful for In this case, assuming the path of the first dead rope 38b shown in FIG. It might get in the way. Therefore, by adopting the arrangement shown in FIG. 6B, the route of the first dead rope 38b can be located at a position where it is difficult to contact the other equipment 81. FIG.

The outer rope 39 is a rope that is pulled in two opposite directions in the X direction so that the inner rope 35 does not loosen when the first catenary support 31 and the second catenary support 33 move in the X direction. A pair of outer ropes 39 are provided at positions sandwiching the inner rope 35 in the Y direction in FIG. One end of the outer rope 39 is fixed to a movable girder-side fixing portion 51 which is a fixed end at the sea-side end of the movable girder 13 . The outer rope 39 is stretched from the movable girder-side fixing portion 51 toward the land side in the X direction, and is guided by the first outer sheave 53 provided on the first bogie 31a of the first catenary support 31 so that its direction is oriented in the X direction. It can be changed to the sea side. The turned outer rope 39 is guided by a movable girder side end sheave 55 provided on the movable girder 13 to change its direction toward the land side in the X direction.
The turned outer rope 39 is guided by a fixed girder side end sheave 57 provided on the fixed girder 9 to change its direction to the sea side in the X direction. The outer rope 39 is further guided by a second outer sheave 59 provided on the second bogie 33a of the second catenary support 33 to change its orientation to the land side in the X direction, and is located at the land side end of the fixed girder 9. It is fixed to the fixed girder side fixing portion 61 which is the fixed end. Outer rope guide rollers 63 for guiding the outer rope 39 when the movable girder 13 rotates are provided below the connecting portion 11 in the path of the outer rope 39, as shown in FIG. 3(b).

In this configuration, the end of the inner rope 35 on the sea side in the X direction is pulled by the outer rope 39 toward the sea side in the X direction via the first support sheave 31c. The end of the inner rope 35 on the land side in the X direction is pulled by the outer rope 39 toward the land side in the X direction via the second support sheave 33c. Therefore, the inner rope 35 does not loosen when the first catenary support 31 and the second catenary support 33 move in the X direction.
The above is the detailed description of the catenary support mechanism 21 .

As described above, in this embodiment, the disc-shaped guide mechanism 37a of the crane 1 is provided axially adjacent to the first dead sheave 45a so as to be rotatable independently, and the first running guide mechanism 37a is operated only when the movable girder 13 is rotated upward. A first guide roller 47a is provided to guide the rope 38a.
In this configuration, when the movable girder 13 rotates upward, the first running rope 38a is guided by the first guide roller 47a without contacting the fixed girder 9, the movable girder 13, the first dead sheave 45a and the first dead rope 38b. be done.
Therefore, even when the movable girder 13 is rotated upward, the trolley 15 can be traversed without the other members constituting the crane 1 and the first running rope 38a sliding and being damaged.

1 Crane 3 Support structure 7 Travel device 9 Fixed girder 9a Land-side end sheave 9b Rail 10 Container 11 Connecting parts 11a, 11b Fixed part 12 Shafts 12a, 12b Shaft holding plate 13 Movable girder 13a Rail 15 Trolley 15a First trolley sheave 15b Second Trolley sheave 15c Anchor 17 Spreader 17a Spreader sheave 19 Hoisting wire 21 Catenary support mechanism 25 Machine room 27 Drum 31 First catenary support 31a First truck 31b First wheel 31c First support sheave 33 Second catenary support 33a Second truck 33b 2 wheels 33c second support sheave 35 inner rope 35a first rope 35b second ropes 37a, 37b disc-shaped guide mechanism 38a first running rope 38b first dead rope 39 outer rope 40a second running rope 40b second dead rope 45a First dead sheave 45b Second dead sheave 47a First guide roller 47b Second guide roller 48 Container ships 49a, 49b First guide parts 50a, 50b Second guide part 51 Movable girder side fixing part 52a First auxiliary guide part 52b Second auxiliary Guide part 53 First outer sheave 55 Movable girder end sheave 57 Fixed girder end sheave 59 Second outer sheave 61 Fixed girder fixed part 63 Outer rope guide roller 81 Other equipment 81a First fixed shaft 81b Second fixed shaft 83a First Dead sheave fixing plate 83b Second dead sheave fixing plate 85a First dual-purpose fixing plate 85b Second dual-purpose fixing plate 87a First movable shaft 87b Second movable shaft 89a First running sheave holding plate 89b Second running sheave holding plate 91a, 91b, 93a , 93b connecting plate

Claims (7)

a fixed girder, a connecting portion provided at one end in the extending direction of the fixed girder, a movable girder pivotally supported by the connecting portion and rotating upward, and a downward movement along the fixed girder and the movable girder. a traveling trolley, a first catenary support traveling below the movable girder at a position farther from the fixed girder than the trolley; A crane comprising a first rope that connects the trolley and the connecting portion via one support sheave,
a first running rope that is part of the first rope from the trolley to the first catenary support and runs with the trolley;
a first dead rope that is a portion of the first rope from the connecting portion to the first catenary support and does not travel with the trolley;
a first dead sheave that is provided below the connecting part about a horizontal direction orthogonal to the extending direction, guides the first dead rope, and directs the direction of the first dead rope from below toward the first catenary support;
The movable girder is provided axially adjacent to the first dead sheave and rotatable independently at a position overlapping with the first running rope in plan view and at a position not overlapping with the first dead rope in plan view. A crane comprising a first guide roller that guides the first running rope only when the crane is rotated upward. a second catenary support facing the first catenary support across the trolley and traveling below along the fixed girder;
a second rope stretched downward from the connecting portion and connecting the trolley and the connecting portion via a second support sheave of the second catenary support;
a second dead rope that is the second rope between the connecting portion and the second catenary support and that does not run with the trolley;
a second dead sheave that is provided below the connecting part about the horizontal direction orthogonal to the extending direction and guides the second dead rope to direct its direction toward the second catenary support from below;
The second dead sheave is axially adjacent to the second dead sheave at a position overlapping with the first running rope in plan view and at a position not overlapping with the second dead rope in plan view, and the movable The crane according to claim 1, further comprising a second guide roller that guides the first running rope only when the girder is rotated upward. 3. The crane according to claim 2, wherein said second dead rope and said first dead rope are inclined at a predetermined angle in opposite directions to said first running rope in the width direction of said girder in plan view. 4. The crane according to claim 3, wherein the first dead sheave and the second dead sheave are arranged opposite to each other in the width direction of the fixed girder with the first guide roller and the second guide roller interposed therebetween. 3. The crane according to claim 2, wherein said second dead rope and said first dead rope incline at a predetermined angle in the same direction in the width direction of said girder in a plan view with respect to said first running rope. The crane according to claim 5, wherein the first dead sheave and the second dead sheave are arranged in parallel on the same side in the width direction of the fixed girder with respect to the first guide roller and the second guide roller. It projects downward from the axial end of the first guide roller or the second guide roller and is inclined in the axial direction away from the rotation axis, and the first running rope is provided to move the first guide roller or the second guide roller. The crane according to any one of claims 2 to 6, comprising a guide portion that guides the second guide roller.

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