JP2010265102A - Portal crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portal cane having a hand unit capable of surely gripping gripping objects of various shapes. <P>SOLUTION: The portal crane includes: a pair of right and left support legs 2 movable along a pair of travel rails 12; a crane girder 3 having both ends supported to the support legs 2; and a handling device 4 installed on the crane girder 3. The handling device 4 includes: a base member 6 slidable along the crane girder 3 and installed to the crane girder 3 so as to be liftable; a cross beam 7 arranged by horizontally extending in a lower part of the base member 6 and rotatable around the axis of the base member 6; and a plurality of hand units 8 at least one of which is slidably installed along the cross beam 7. The hand unit 8 has a gripping part 11 for gripping the gripping objects, and a handle body 10 for installing the gripping parts 11 at an end. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a portal crane (gantry crane) for gripping and moving a gripping object.

Block building methods are common in shipyards. The sub-material that constitutes the block is manufactured by placing reinforcing members (web materials) on a flat plate (base panel) and welding them, but the arrangement and welding of the members are still mainly performed manually. . However, it is inefficient and time-consuming and troublesome to manually place and weld such members.
Patent Document 1 discloses an automatic material distribution temporary assembly method and apparatus for a shipbuilding production line for the purpose of automating such material distribution. However, in Patent Document 1, there is only one hand unit for gripping a gripping object (mainly a web material). The size of the object to be grasped varies from several tens of centimeters to several meters or more. For this reason, it is difficult to deal with all gripping objects with one hand unit.

JP 2001-1979

  An object of the present invention is to provide a portal crane including a hand unit that can reliably hold a gripping object having various shapes in consideration of the above-described conventional technology.

  In order to achieve the object, in the invention of claim 1, a pair of left and right support legs movable along a pair of traveling rails, a crane girder supported at both ends on the support leg, and the crane girder A handling device to be attached, and the handling device is movable along the crane girder, and is attached to the crane girder so as to be movable up and down, and extends horizontally below the base member. A cross beam arranged and rotatable about an axis of the base member, and a plurality of hand units at least one of which is movably attached along the cross beam. Provided is a portal crane having a hand main body extending downward from a girder and a gripping portion attached to a lower end portion of the hand main body for gripping a gripping object. .

  In the invention of claim 2, a pair of left and right support legs movable along a pair of traveling rails, a crane girder supported at both ends on the support leg, and a handling device attached to the crane girder The handling device is movable along the crane girder and is attached to the crane girder so as to be movable up and down, and is disposed horizontally extending below the base member, and A transverse girder that is rotatable about an axis of the base member and that is extendable and retractable, and a plurality of hand units that are movably attached in accordance with the expansion and contraction of the transverse girder, Provided is a portal crane having a hand main body extending downward from a cross beam and a gripping portion attached to a lower end portion of the hand main body for gripping a gripping object. That.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the hand body is rotatable about its axis.
According to a fourth aspect of the present invention, in any one of the first to third aspects, at least one of the hand units is movable in the vertical direction.

  According to the first aspect of the present invention, a plurality of gripping portions for gripping a gripping object are provided in each of the two hand units, for example, and the hand units are slidably attached along the cross beams. By adjusting the interval between the hand units, these can be stably gripped by the hand unit so as to correspond to gripping objects of various lengths. In addition, since the cross beam can rotate around the axis of the base member, and the base member can slide and move up and down along the crane beam, the handling device can be moved in a wide range within the portal crane and gripped. The handling device can be moved to a place where the object can be gripped most stably and can be gripped by the hand unit.

  According to the invention of claim 2, a plurality of gripping portions for gripping the gripping object are provided in each of the two hand units, for example, each of the two hand units. Because it is mounted so as to be movable along the direction, it is possible to stably hold the hand unit in accordance with the gripping object of various lengths by adjusting the distance between the hand units by expanding and contracting the cross beam. Can do. In addition, since the cross beam can rotate around the axis of the base member, and the base member can slide and move up and down along the crane beam, the handling device can be moved in a wide range within the portal crane and gripped. The handling device can be moved to a place where the object can be gripped most stably and can be gripped by the hand unit.

According to the invention of claim 3, since the hand main body is rotatable around the axis, for example, when the gripping target is a curved plate material and the both ends of the gripping target are gripped, the pair of hand units The rotation amount of the hand body can be adjusted and gripped.
According to the invention of claim 4, since at least one of the hand units is movable, the height of any one of the gripping portions can be adjusted to a different position. Therefore, even when the height of the grip portion of the grip target is different, it can be securely gripped.

1 is a schematic front view of a portal crane according to the present invention. 1 is a schematic plan view of a portal crane according to the present invention. 1 is a schematic side view of a portal crane according to the present invention. It is the schematic of a hand unit. It is a schematic sectional drawing when the curved holding | grip target object is hold | gripped.

FIG. 1 is a schematic front view of a portal crane according to the present invention, FIG. 2 is a schematic plan view, and FIG. 3 is a schematic side view.
A portal crane 1 according to the present invention includes a pair of support legs 2, a crane girder 3, and a handling device 4. In addition, although the figure has shown the state in which the two handling apparatuses 4 were attached to the crane girder 3, the number which attaches the handling apparatuses 4 is not limited to this. The handling device 4 is attached so as to be movable in the direction of arrow A along the crane girder 3. The movement of the handling device 4 is performed by driving a motor 5 so that, for example, a guide roller provided in the handling device 4 is rotated and rolled on a guide rail provided in the upper part of the crane girder 3. The handling device 4 includes a columnar base member 6, a cross beam 7, and a hand unit 8. The base member 6 is attached to the crane girder 3 so as to be movable up and down in the direction of arrow B. The raising / lowering operation of the base member 6 is performed by driving a motor 9 and using a known raising / lowering mechanism.

  The cross beam 7 is attached to the lower end of the base member 6 and extends in the horizontal direction around the base member 6. The cross beam 7 is attached around the axis of the base member 6 so as to be rotatable in the direction of arrow C. A pair of hand units 8 for gripping the object to be gripped are attached to both ends of the cross beam 7. At least one of the hand units (both in the figure) can slide in the direction of arrow D along the cross beam 7. Further, the hand unit 8 can rotate in the direction of arrow E around its axis. The number of hand units 8 is not limited to two for the cross beam 7 and may be three or more. Alternatively, the hand unit 8 may be fixed to the cross beam 7, the cross beam 7 may be expanded and contracted, and the hand unit 8 may be moved in the longitudinal direction of the cross beam 7.

The hand unit 8 includes a hand main body 10 that hangs down from the cross beam 7 and a grip portion 11 that is provided at the end of the hand main body 10. The gripping part 11 can rotate in the direction of arrow F (see FIG. 4) around the vertical axis with respect to the axis of the hand body 10. Further, the hand main body 10 can be moved (stretched) in the direction of arrow G.
In this way, by moving the handling device 4, the cross beam 7, the hand unit 8, the hand body 10, and the grip 11 in the directions indicated by the arrows A to G, the gripping object in various places or the gripping object of various shapes An object can be reliably gripped by the grip portion 11. For example, the object to be grasped can be moved in the left-right direction of the portal crane 1 by moving the handling device 4 in the direction of arrow A. Further, by moving the handling device 4 in the direction of the arrow B, the grasped object can be moved in the vertical direction of the portal crane 1. Further, since the leg 2 of the portal crane 1 travels in the direction of arrow H along the traveling rail 12, the grasped object can be conveyed in the front-rear direction of the portal crane 1. This traveling is performed by driving the motor 13. In addition, the movement and rotation of each member of the portal crane 1 can have the same effect not only as movement of the gripping object but also as means for gripping the gripping object.

  Further, the cross beam 7 is rotated in the direction of arrow C, the hand unit 8 is moved in the direction of arrow D, further rotated in the direction of arrow E, the gripping part 11 is rotated in the direction of arrow F, and the hand body 10 is moved in the direction of arrow G. By extending and contracting, the grip portion can be adjusted according to the gripping object of various shapes, and the gripping object can be gripped reliably and stably. That is, even when the upper edge of the object to be grasped is inclined obliquely, the adjacent hand main body 10 is expanded and contracted to different lengths, thereby reliably and stably grasping according to the inclination angle. Can do.

  Further, since the hand unit 8 is provided with a pair, that is, two, in the cross beam 7, two hand units 8 are used when holding a large holding object, and only one hand unit 8 is used when holding a small holding object. Can be gripped appropriately according to the object to be gripped. When gripping with only one hand unit 8, the hand unit can be stably gripped by moving the hand unit in the direction of arrow D and placing it directly below the base member 6. Further, by providing two or more hand units 8 as described above, a larger object to be grasped can be stably grasped.

Further, in the pair of hand units 8, if at least one of the hand main bodies 10 can be expanded and contracted, the heights of the respective gripping portions 11 can be adjusted to different positions. Therefore, even when the height of the grip portion of the grip target is different, it can be securely gripped.
In FIG. 1, reference numeral 14 denotes a small delivery table for a grasped object. Reference numeral 15 denotes a delivery table for a large gripping object. Reference numeral 16 denotes a pin surface plate for placing a base panel when the gripping object is a web material. In FIG. 2, 17 is a robot for temporary welding of the base panel and the web material. The robot 17 for temporary welding directs the nozzle 18 at the boundary between the base panel and the web material, thereby temporarily welding both members.

FIG. 4 is a schematic view of the hand unit. (A) shows a side view and (B) shows a front view.
As illustrated, the hand unit 8 is suspended from the cross beam 7. When the hand unit 8 moves along the cross beam 7, the hand unit 8 can be slid along the cross beam 7 by a known method by driving the motor 18. As described above, as the structure for expanding and contracting the cross beam 7, the hand unit 8 is fixed to the cross beam 7, and the hand unit 8 is moved along the longitudinal direction of the cross beam 7 by expanding and contracting the cross beam 7. You may let them. The hand body 10 can be rotated in the direction of arrow E, which is the axial direction, by driving the motor 19. In order to rotate the grip 11 in the direction of arrow F, the motor 20 can be driven. If the gripper 11 is rotated 90 ° by driving the motor 20, the flat plate can be gripped. In order to expand and contract the hand main body 10 in the direction of arrow G, the hand main body 10 can be expanded and contracted by a known method using the expansion and contraction mechanism 21, for example, by sliding the hand main body 10 along the guide member 22.

The gripping part 11 is a clamp, and the claws constituting the clamp are opened and closed by the cylinder 23 (in the direction of arrow I). In addition, as the holding part 11, you may use the attraction | suction hand by a magnet or a vacuum other than a clamp.
FIG. 5 is a schematic cross-sectional view when a curved gripping object is gripped.
As shown in the figure, the hand body 8 described above is rotated in one direction in the direction of arrow E by rotating one side forward and the other in reverse direction, thereby adjusting the angle of the gripping part 11 and holding the gripping object 24 curved by the gripping part 11. The (web material) can be reliably gripped along the curved surface.

DESCRIPTION OF SYMBOLS 1 Gate type crane 2 Support leg 3 Crane girder 4 Handling apparatus 5 Motor 6 Base member 7 Horizontal girder 8 Hand unit 9 Motor 10 Hand main body 11 Grip part 12 Travel rail 13 Motor 14 Delivery stand 15 Delivery stand 16 Pin surface plate 17 Temporary attachment Welding robot 18 Motor 19 Motor 20 Motor 21 Telescopic mechanism 22 Guide member 23 Cylinder 24 Grasping object

Claims (4)

A pair of left and right support legs movable along a pair of travel rails;
A crane girder supported at both ends on the support leg;
A handling device attached to the crane girder,
The handling device is
A base member movable along the crane girder and attached to the crane girder so as to be movable up and down;
A cross beam disposed horizontally extending below the base member and rotatable about the axis of the base member;
A plurality of hand units movably attached along the cross beam,
The hand unit is
A hand body extending downward from the cross beam;
A portal crane having a grip portion attached to a lower end portion of the hand body and gripping a gripping object. A pair of left and right support legs movable along a pair of travel rails;
A crane girder supported at both ends on the support leg;
A handling device attached to the crane girder,
The handling device is
A base member movable along the crane girder and attached to the crane girder so as to be movable up and down;
A horizontal girder that extends horizontally at the bottom of the base member and is rotatable about the base member axis;
A plurality of hand units attached at least one movably according to the expansion and contraction of the cross beam,
The hand unit is
A hand body extending downward from the cross beam;
A portal crane having a grip portion attached to a lower end portion of the hand body and gripping a gripping object.   The portal crane according to claim 1 or 2, wherein the hand body is rotatable about its axis.   The portal crane according to claim 1, wherein at least one of the hand units is movable in the vertical direction.

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