JP2017178581A - Quay crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quay crane capable of horizontally moving a trolley or vertically moving a hanger while suppressing rubbing each other between a sea-side end part of a girder in a pair of sea-side wires, and a trolley when a boom is operated to rise and fall.SOLUTION: A quay crane 1 comprises: a pair of sea-side drums D2, D4; a pair of land-side drums D1, D3; a girder assembly 6 having a girder 4 and a boom 5; a trolley 7 laterally movable arranged on the girder assembly; a hanger 8 suspended under the trolley; a pair of sea-side wires W2, W4; a pair of land-side wires W1, W3. The quay crane further comprises a guide roller 15 attached to the girder for guiding a part between a sea-side end part of the girder and the trolley of the pair of the sea-side wires, respectively when the boom is operated to rise or fall.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a quay crane, and more particularly to a quay crane having a sea side drum and a land side drum.

  Conventionally, quay cranes have been used in bulk packing yards, container terminals, and the like (see, for example, Patent Document 1). This quay crane includes a pair of sea side drums arranged on the sea side and a pair of land side drums arranged on the land side as a plurality of drums that are driven individually. The quay crane includes a girder having a girder and a boom connected to the sea side end of the girder so as to be raised and lowered. And a hanger arranged. In addition, the quay crane includes a pair of seaside wires connected from the pair of seaside drums to the suspension equipment via the seaside end of the boom and the trolley, and the landside side of the girder from the pair of landside drums. And a pair of land-side wires respectively connected to the hanger via a trolley.

JP 2014-189389 A

  In the case of the above-described conventional quay crane, when the boom is raised and lowered, or when the lifting of the lifting tool is attempted, the portion between the sea-side end of the girder and the trolley in the pair of sea-side wires is There was a possibility of rubbing each other.

  The present invention has been made in view of the above, and an object of the present invention is to rub the portions between the sea-side ends of the girder and the trolley of the pair of sea-side wires in a state where the boom is raised and lowered. It is providing the quay crane which can perform traversing of a trolley or raising / lowering of a hanging tool, suppressing this.

  In order to achieve the above object, a quay crane according to the present invention includes a pair of sea side drums arranged on the sea side, a pair of land side drums arranged on the land side, girder, and sea side ends of the girder. A boom having a boom connected to the section in a undulating manner, a trolley arranged to traverse above the girder, a hanger disposed under the trolley, and a pair of sea side drums to A pair of sea-side wires respectively connected to the suspension device via the sea-side end and the trolley, and a pair of the land-side drum from the land-side end of the girder and the trolley In a quay crane comprising a pair of land-side wires respectively connected to a hanging tool, a portion between the sea-side end of the girder and the trolley in the pair of sea-side wires when the boom is raised and lowered. Guidero to guide each Characterized in that it comprises the La on the girder.

According to the present invention, when the boom is raised and lowered, the portions between the seaside ends of the girder and the trolley of the pair of sea side wires are respectively guided by the guide rollers. Even when the trolley is traversed or the lifting tool is moved up and down, it is possible to suppress the portions of the pair of sea-side wires between the girder sea-side ends and the trolley from rubbing against each other. That is, according to the present invention, in a state where the boom is raised and lowered, the portion of the pair of sea side wires between the end of the girder on the sea side and the trolley is prevented from rubbing against each other, and You can go up and down.

  The said structure WHEREIN: The said guide roller is good also as a structure which has a groove | channel into which the part between the said edge part of the sea side of the said girder and the said trolley fits in a pair of said sea side wire.

  According to this configuration, in a state where the boom is raised and lowered, the trolley traversing or hanging tool is effectively suppressed while rubbing each other between the end portions of the girder sea side and the trolley in the pair of sea side wires. Can be moved up and down.

  According to the present invention, in a state where the boom is raised and lowered, the trolley can be traversed or the hangers can be moved up and down while suppressing the friction between the sea end of the pair of sea side wires and the trolley. It can be carried out.

It is a side view showing a quay crane according to an embodiment. It is a perspective view which shows the mechanism which drives the trolley and hanging tool shown in FIG. It is a perspective view which shows the movement operation | movement of the trolley shown in FIG. It is a perspective view which shows the raising / lowering operation | movement of the hanging tool shown in FIG. It is a perspective view which shows the opening / closing operation | movement of the hanging tool shown in FIG. FIG. 6A is a side view schematically showing a state where the boom of the quay crane according to the embodiment is horizontal, and FIG. 6B is a side view schematically showing a state where the boom is raised upward. is there. It is a side view which shows the state which visually recognized the guide roller of the quayside crane which concerns on the modification of embodiment from the land side.

  Hereinafter, a quay crane 1 according to an embodiment of the present invention will be described with reference to the drawings. Regarding the drawings, the dimensions are changed from the actual product so that the configuration is easy to understand, and the ratio of the thickness, width, length, etc. of each member and each component does not necessarily match the actual product ratio. Not necessarily.

  The quay crane 1 according to the present embodiment shown in FIG. 1 is an unloader, specifically, a rope trolley type unloader. In FIG. 1, the left side is the sea side and the right side is the land side. The quay crane 1 includes a leg structure 3 having a traveling device 2 that enables the quay crane 1 to travel along the quay, a girder 4 supported by the leg structure 3, and a undulation at an end of the girder 4 on the sea side. And a boom 5 connected to each other. Hereinafter, the girder 4 and the boom 5 are collectively referred to as a beam 6.

  Further, the quay crane 1 includes a trolley 7 disposed on the girder 6 so as to be capable of traversing, and a hanger 8 disposed under the trolley 7. Specifically, the hanging tool 8 is suspended below the trolley 7 so as to be lifted and lowered from the trolley 7. Although the specific kind of the hanging tool 8 is not specifically limited, in this embodiment, a grab bucket is used as an example. The trolley 7 in FIGS. 2 to 5 is illustrated in a state of moving to the land side from FIG. 1.

As shown in FIG. 2, the quay crane 1 includes a plurality of drums that are individually driven by motors M <b> 1 to M <b> 4 in a machine room 10. The plurality of drums includes a support drum D1, a support drum D2, an opening / closing drum D3, and an opening / closing drum D4. The supporting drum D2 and the opening / closing drum D4 are disposed on the sea side, and the supporting drum D1 and the opening / closing drum D3 are disposed on the land side. The motor M1 is a motor for driving the support drum D1, the motor M2 is a motor for driving the support drum D2, the motor M3 is a motor for driving the opening / closing drum D3, and the motor M4 is for driving the opening / closing drum D4. It is a motor to drive.

  That is, the support drum D2 and the opening / closing drum D4 correspond to a pair of sea side drums arranged on the sea side. The support drum D1 and the opening / closing drum D3 correspond to a pair of land-side drums arranged on the land side.

  The support wire W1 wound around the support drum D1 and the open / close wire W3 wound around the open / close drum D3 are land end side pulleys P1 disposed at the land side end (land end side) of the girder 4, respectively. And the suspension tool 8 is suspended via the trolley upper pulley P5 and the trolley upper pulley P7 provided on the trolley 7 via the land end side pulley P3. Further, the supporting wire W2 wound around the supporting drum D2 and the opening / closing wire W4 wound around the opening / closing drum D4 are respectively connected to the sea end (sea end side) of the boom 5 at the sea end. The hanging tool 8 is suspended via the side pulley P2 and the sea end side pulley P4 via the trolley upper pulley P6 and the trolley upper pulley P8 provided on the trolley 7.

  That is, the supporting wire W2 and the opening / closing wire W4 correspond to a pair of seaside wires respectively connected to the hanging tool 8 from the pair of seaside drums via the seaside end of the boom 5 and the trolley 7. . Further, the supporting wire W1 and the opening / closing wire W3 correspond to a pair of land-side wires respectively connected to the hanging tool 8 from the pair of land-side drums via the land-side end of the girder 4 and the trolley 7. .

  The quay crane 1 includes a control device 11 in the machine room 10. The controller 11 controls the rotation of the support drum D1, the support drum D2, the open / close drum D3, and the open / close drum D4 based on, for example, a driver's command, thereby moving the trolley 7 (see FIG. 3), the lifting / lowering operation of the hanging tool 8 (see FIG. 4 described later), and the opening / closing operation of the hanging tool 8 (refer to FIG. 5 described later). Such a control device 11 includes a support drum D1, a support drum D2, an open / close drum D3, a sequencer for controlling the open / close drum D4, and the like.

  Next, a general operation of the quay crane 1 will be described. As shown in FIG. 1, when unloading the transported material 21 from the bulk carrier 20, the trolley 7 is positioned on the bulk carrier 20, and the transported material 21 is gripped by the hanger 8. Then, the trolley 7 is positioned on the hopper 9, the hanging tool 8 is opened, and the transported material 21 is unloaded onto the hopper 9 as a transported material receiving device.

  When moving the trolley 7 from the sea side to the land side, as shown in FIG. 3, the supporting drum D1, the supporting drum D2, the opening and closing drum D3, and the opening and closing drum D4 are in the same direction (clockwise in the figure). , The land end side support wire W1 and the open / close wire W3 are wound up, and the sea end side support wire W2 and the open / close wire W4 are fed out. Conversely, when the trolley 7 is moved from the land end side to the sea end side, the support drum D1, the support drum D2, the opening / closing drum D3, and the opening / closing drum D4 are rotated in the same direction (counterclockwise in the figure). Then, the land-side support wire W1 and the open / close wire W3 are fed out, and the sea-end side support wire W2 and the open / close wire W4 are wound up.

  When lifting the lifting tool 8, as shown in FIG. 4, the land end side support drum D1 and the open / close drum D3 are rotated clockwise in the figure, and the sea end side support drum D2 and the open / close drum are opened and closed. The drum D4 is rotated in the opposite direction (counterclockwise in the figure) to wind up the wires W1 to W4. On the other hand, when lowering the hanger 8, the land end side support drum D1 and the open / close drum D3 are rotated counterclockwise in the figure, and the sea end side support drum D2 and the open / close drum D4 are rotated. Is rotated in the opposite direction (clockwise in the figure) to feed out the wires W1 to W4.

  When opening the hanging tool 8, as shown in FIG. 5, the opening / closing drum D3 is rotated counterclockwise in the drawing, and the opening / closing drum D4 is rotated in the opposite direction to the opening / closing wire W3 and the opening / closing. The wire W4 is fed out. On the contrary, when closing the hanging tool 8, the opening / closing drum D3 is rotated clockwise in the figure, the opening / closing drum D4 is rotated in the opposite direction, and the opening / closing wire W3 and the opening / closing wire W4 are moved. Roll up.

  Next, the operation when the boom 5 is raised and lowered and the configuration related thereto will be described. FIG. 6A is a side view schematically showing a state in which the boom 5 of the quay crane 1 is in a horizontal state (in a horizontal state), and FIG. 6B is a view in which the boom 5 is directed upward with respect to the horizontal direction. It is a side view which shows typically a mode that it undulated. In FIG. 6A and FIG. 6B, illustration of some members is omitted.

  The control device 11 operates a hoisting device (not shown) that is a device for hoisting the boom 5 when receiving a hoisting command for hoisting the boom 5 from the operator of the quay crane 1. Thereby, the boom 5 is raised and lowered by the raising and lowering device. In addition, about this raising / lowering apparatus, since the well-known boom raising / lowering apparatus and boom raising / lowering mechanism which are used for the well-known quay crane can be applied, detailed description is abbreviate | omitted.

  Further, the quay crane 1 includes a guide roller 15 in the girder 4. Specifically, the quay crane 1 includes a guide roller 15 at the end of the girder 4 on the sea side. More specifically, the guide roller 15 is disposed at a portion of the leg tie beam 18 disposed at the sea side end of the girder 4. The guide roller 15 is installed so as to guide a portion between the sea end of the girder 4 and the trolley 7 in the pair of sea wires (W2, W4) when the boom 5 is raised and lowered.

  Specifically, the guide roller 15 is configured by a cylindrical roller as shown in FIGS. Further, the guide roller 15 according to the present embodiment does not guide the wire in a state before the boom 5 is raised and lowered, and when the boom 5 is raised and lowered, as shown in FIG. Specifically, the girder 4 is installed on the leg tie beam 18 so as to be disposed on the upper surface of the portion between the sea-side end of the girder 4 and the trolley 7 in W2, W4).

  More specifically, in the case of the quay crane 1, the trolley 7 is operated so as to be positioned at the girder 4 portion of the girder 6 when the boom 5 is raised and lowered. When the boom 5 is raised and lowered, the guide roller 15 has a trolley located at the sea side end of the girder 4 in the pair of sea-side wires (W2 and W4) and the girder 4 when the boom 5 is raised and lowered. 7 is installed on the leg tie beam 18 at the sea side end of the girder 4 so as to be positioned on the upper surface of the part between the girder 4 and the seam 7.

  Further, the guide roller 15 is pivotally supported so as to rotate in accordance with the feeding and winding operation of the pair of sea side wires (W2, W4) (that is, traveling of the pair of sea side wires). Thereby, it is suppressed that a pair of sea side wires (W2, W4) rub against the surface of the guide roller 15. The pair of sea-side wires (W2, W4) are guided by the guide roller 15 by passing below the guide roller 15 when the boom 5 is raised and lowered.

  As described above, when the boom 5 is raised and lowered, the portion between the sea end of the girder 4 of the pair of sea side wires (W2, W4) and the trolley 7 is guided by the guide roller 15, so that FIG. 6 (b), when the trolley 7 is traversed or the hanging tool 8 is raised and lowered while the boom 5 is raised and lowered, the sea side ends of the girder 4 in the pair of sea side wires (W2, W4) And the trolley 7 are prevented from rubbing against each other. Therefore, according to the quay crane 1, it suppresses that the part between the sea side edge part of the girder 4 and the trolley 7 in a pair of sea side wires (W2, W4) in the state where the boom 5 undulates mutually. The traversing of the trolley 7 or the lifting / lowering of the hanging tool 8 can be performed.

(Modification)
FIG. 7 is a side view showing a state where the guide roller 15a of the quay crane 1a according to the modification of the present embodiment is viewed from the land side. The quay crane 1a is different from the quay crane 1 described above in that a guide roller 15a is provided instead of the guide roller 15. In addition, since the other structure of the quay crane 1a is the same as that of the quay crane 1, description of the other structure of the quay crane 1a is abbreviate | omitted.

  The guide roller 15a further includes a groove 16a and a groove 16b into which a portion between the sea side end of the girder 4 and the trolley 7 in the pair of sea side wires (W2, W4) when the boom 5 is raised and lowered. In this respect, it differs from the guide roller 15. Specifically, in the groove 16a, when the boom 5 is raised and lowered, a portion between the sea side end of the girder 4 of the opening / closing wire W4 and the trolley 7 among the pair of sea side wires (W2, W4). fit. Further, when the boom 5 is raised and lowered, the groove 16b fits a portion between the sea end of the girder 4 of the support wire W2 and the trolley 7 out of the pair of sea side wires (W2, W4).

  According to the quay crane 1a according to this modification, since the guide roller 15a includes the groove 16a and the groove 16b, when the boom 5 is raised and lowered, the trolley 7 is traversed or the lifting tool 8 is moved up and down. Even if it exists, the part between the sea side edge part of the girder 4 and the trolley 7 in a pair of sea side wire (W2, W4) can be effectively guided by the groove | channel 16a and the groove | channel 16b, respectively. Thereby, in a state where the boom 5 is raised and lowered, the trolley is effectively restrained from rubbing each other between the sea end of the girder 4 and the trolley 7 in the pair of sea side wires (W2, W4). 7 traversal or lifting / lowering of the hanger 8 can be performed.

  In addition, in the embodiment mentioned above and the modification of embodiment, although the rope trolley type unloader is used as the quay cranes 1 and 1a, the kind of quay crane to which this invention is applied is not limited to this. For example, the present invention can also be applied to a quay crane or the like having a hanger 8 such as a spreader.

  Although the preferred embodiments of the present invention have been described above, the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. Is possible.

DESCRIPTION OF SYMBOLS 1,1a Quay crane 4 Girder 5 Boom 6 Girder 7 Trolley 8 Lifting tool 11 Control device 15, 15a Guide roller 16a, 16b Groove 18 Leg tie beam D1-D4 Drum W1-W4 Wire P1-P8 Pulley M1-M4 Motor

Claims (2)

A pair of sea-side drums disposed on the sea side, a pair of land-side drums disposed on the land side, a girder having a girder and a boom connected to the sea-side end of the girder in a undulating manner, and A trolley arranged in a traversable manner on the girders, a hanging tool arranged under the trolley, and a pair of the sea side drums through the sea side end of the boom and the trolley. A pair of sea-side wires connected to each other, and a pair of land-side wires connected respectively to the suspension from the pair of land-side drums via the land-side end of the girder and the trolley. In the quay crane provided,
A quay crane comprising a guide roller for guiding a portion of the pair of sea-side wires between the end of the girder on the sea side and the trolley when the boom is raised and lowered.   2. The quay crane according to claim 1, wherein the guide roller has a groove into which a portion between the end of the girder on the sea side of the pair of sea side wires and the trolley is fitted.

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