JP2517994Y2 - Spreader structure of spreader for container crane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a flipper structure of a spreader for a container crane used for loading and unloading a container.

[Prior art]

Generally, a container crane is used for loading and unloading a container, and in this case, a spreader is used as a suspending tool for the container. In this spreader, twist locks that fit into fitting holes provided in the four corners of the container are provided below the four corners of the frame-shaped main body, and guide flippers are provided.

Further, this spreader is configured such that the spreader main body can be expanded and contracted in the longitudinal direction so that it can be applied to several types of container handling with different lengths (for example, Japanese Utility Model Publication No. 47-11077).

On the other hand, a flipper provided on the frame-shaped body for guiding the container to the frame-shaped body is pivotally supported on the spreader body so as to be vertically rotatable.

[Problems to be solved by the device]

By the way, according to the conventional flipper structure for a spreader for container crane as described above, the spreader body can be expanded and contracted to cope with a change in the length direction of the container, but a change in the width direction There is a problem that we cannot handle it.

That is, the width of the container has recently become 8 feet and 6 inches from the conventional width of 8 feet, and it has become necessary to have a flipper structure capable of coping with both. As a countermeasure, it is conceivable to expand and contract the spreader body in the width direction, but the structure is complicated and large, which leads to an increase in cost and becomes an economic problem. On the other hand, it is conceivable that the widthwise flipper is supported on the spreader body so as to be slidable in the horizontal direction, but this is not practical in terms of strength and is a practical problem.

[Means for solving problems]

The present invention has been made to solve the above-mentioned various conventional problems, and includes a twist lock 4 at each of four corners of the spreader main body 1, fixed flippers 5 at both ends in the longitudinal direction, and a width. Movable flippers 6 are arranged at both ends in the direction, and the movable flippers 6 form a first shaft 8 and a second shaft 9 by a plurality of bearings provided on a support member 7 fixed to the spreader body 1. Gears 14 and 14 'which are supported in parallel and fixed to the respective shafts are rotatable in opposite directions to each other, and the first shaft 8 and the second shaft 9 can be rotated.
The movable flipper body 10 is supported by a bearing 18 provided on the movable flipper body 10 at a portion formed by projecting eccentrically in opposite directions to each other in the central portions 15 and 15 'of the. Between the central portion 15 or 15 'of the first shaft 8 or the second shaft 9, at least one of the first shaft 8 and the second shaft 9 prevents the rotation of both shafts 8 and 9. (EN) A flipper structure for a spreader for a container crane, in which a movable flipper body (10) is supported while being provided with a gap that allows it to swing.

[Action]

According to the flipper structure of the spreader for a container crane having such a configuration, the position of the fixing flipper is adjusted by expanding and contracting the spreader main body with respect to the dimensional change of the container in the longitudinal direction.

Then, with respect to the change in the width direction, the driving device rotates the first eccentric shaft and the second eccentric shaft through the interlocking mechanism, and the movable flipper rotatably supported by the first eccentric shaft and the second eccentric shaft is adjusted to the eccentric amount. It can be dealt with by using and swinging.

〔Example〕

An embodiment of a flipper structure for a spreader for a container crane according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic plan view of the spreader, and FIG. 2 is a side view thereof.

The spreader is formed as a frame-shaped spreader main body 1. The spreader main body 1 is composed of a movable portion 3 which is slidable in the longitudinal direction with respect to a fixed portion 2. The lower portion of the four corners of the movable portion 3 is a container. A twist lock 4 for engagement is provided, and a fixed flipper 5 is attached in the longitudinal direction of the spreader body 1 and a movable flipper 6 is attached in the width direction.

As shown in FIGS. 3 to 6, the movable flipper 6 is movable between a first shaft 8 and a second shaft 9 which are rotatably supported by a support member 7 attached to a side surface of the spreader body 1. The flipper body 10 is attached and configured.

Specifically, supporting members 7, 7'having notches 11 are attached to the side surface of the spreader body 1 by welding or the like with a space therebetween, and the supporting members 7, 7'are provided with the first shaft 8 and the second shaft 8. Bearings 12 and 12 'for pivotally supporting the shaft 9 are mounted by bolts 13.

The first shaft 8 and the second shaft 9 have the gears shown in FIG.
14, 14 '(interlocking mechanism) are fixed, and the central portions 15, 15' of the first shaft 8 and the second shaft 9 are formed eccentric with respect to both ends. The first shaft 8 and the second shaft 9 are arranged so that there is an interval in the vertical direction, and the eccentric portion of the central portion is located in the left-right direction. The two fixed gears 14 and 14 'mesh with each other so that the eccentric portions face in opposite directions. Therefore, for example, when the shaft 8 rotates and the eccentric portion moves to the right, the other shaft 9 rotates in the opposite direction via the gears 14 and 14 ', and the eccentric portion moves to the left. .

Reference numeral 16 is a hydraulically driven rotary actuator as a drive device connected to the first shaft 8.

As shown in FIG. 3, a lower portion of the movable flipper main body 10 is formed with a taper portion 17 whose lower portion is opened to guide (receive) the container, and an upper portion thereof is connected to the first shaft 8 and a first shaft 8 through a bearing 18. Two shafts 9 and 9 are attached so as to penetrate therethrough.

It should be noted that the first shaft 8 and the second shaft 9 have gears 14, 1
Rotate a small angle through the 4'in the opposite direction, but at the same time, the eccentric center portions 15 and 15 'rotate in the opposite direction to swing the movable flipper 10 as shown in FIG. become.

In this case, if the bearing 18 supporting the central portions 15 and 15 'and the movable flipper 10 are completely fixed, the movable flipper 10
Since it becomes impossible to oscillate, either or both of the bearings 18 and 18 in the sense of giving flexibility to the movement,
It is necessary to leave a slight clearance between the central portion 15 or 15 'of the first shaft 8 or the second shaft 9.

With such a configuration, when a wide container is currently loaded, the movable flipper body 10 is positioned as shown by the solid line in FIG. 3 to open the lower portion of the taper portion 17 which is the guide surface widely and to load the container. I do. When loading a narrow container, the gears 14, 14 'are rotated in the direction of arrow A in FIG. 3 by operating the rotary actuator 16 (FIG. 4), but the first shaft 8 and the second shaft 8 Axis 9
Since the central portion is eccentric, the movable flipper main body 10 rotates in opposite directions about the axis O, so that the movable flipper body 10 moves from the position indicated by the solid line to the position indicated by the dotted line of the gears 14, 14 '. It will be tilted inward as shown by the arrow around the meshing point O ₁ . Therefore, when the movable flipper body 10 is inclined as shown by the dotted line, it can be used for a narrow container.

[Effect of device]

The spreader flipper structure for a container crane according to the present invention has twist locks 4 at four corners of the spreader body 1, fixed flippers 5 at both ends in the longitudinal direction, and movable flippers 6 at both ends in the width direction. The movable flipper 6 supports a first shaft 8 and a second shaft 9 in parallel by a plurality of bearings provided on a support member 7 fixed to the spreader body 1, and a gear 14 fixed to each shaft, 1
4'allows the movable flipper body 10 to rotate in mutually opposite directions, and the movable flipper body 10 is formed by the portions formed by projecting eccentrically in opposite directions in the central portions 15, 15 'of the first shaft 8 and the second shaft 9. The flipper body 10 is configured to be supported via a bearing 18 provided on the flipper body 10. Further, at least the first portion between the bearing 18 and the central portion 15 or 15 'of the first shaft 8 or the second shaft 9 is provided. Axis 8
Alternatively, either one of the second shafts 9 is configured to support the movable flipper body 10 with a gap that allows the movable flipper body 10 to swing while allowing the rotation of both shafts 8 and 9, and has the following effect. be able to.

a) While adopting a simple structure, the container can be quickly positioned in accordance with the dimensional change in the width direction of the container and accurately guided to the lower portion of the spreader body 1.

b) The flipper of the present invention allows the first shaft 8 and the second shaft 9 having the eccentric center portions 15, 15 'to rotate in opposite directions by a pair of gears 14, 14', and these gears 14 Since the movable flipper main body 10 is swung in the width direction of the container about the meshing point O ₁ of 14 and 14 ′, the shafts 8 and 9 are biased in the most swung state. The central parts 15, 15 which are the parts to be considered are in the state of protruding most to the left and right.

Therefore, even if a horizontal external force is applied to the movable flipper body 10 to move the container laterally, the eccentric center portions 15 and 15 'are prevented from moving in the most laterally protruding state. Since an external force does not substantially act on the device that drives the movable flipper main body 10, there is an effect that the device can be made to have a necessary minimum capacity.

[Brief description of drawings]

FIG. 1 shows an embodiment of a flipper structure for a spreader for container crane according to the present invention. FIG. 1 is a schematic plan view of the spreader, and FIG. 2 is a plan view thereof. FIG. 3 is a side view of the movable flipper, FIG. 4 is a front view showing a partial cross section thereof, FIG. 5 is a view taken along the line II of FIG. 4, and FIG. 6 is II-II of FIG. FIG. 1 ... Spreader main body, 2 ... Fixed part 3 ... Movable part, 4 ... Twist lock 5 ... Fixed flipper, 6 ... Movable flipper 7 ... Supporting material, 8 ... First shaft 9 ... 2 shaft 10 …… Movable flipper body, 11 …… Notch 12 …… Bearing, 13 …… Bolt 14 …… Gear, 15 …… Central part 16 …… Rotary actuator 17 …… Tapered part, 18 …… Bearing

Claims (1)

(57) [Scope of utility model registration request] A twist lock (4) is provided at each of four corners of a spreader body (1), a fixed flipper (5) is provided at both ends in the longitudinal direction, and a movable flipper (6) is provided at each end in the width direction. The movable flipper (6) supports the first shaft (8) and the second shaft (9) in parallel by a plurality of bearings provided on a support member (7) fixed to the spreader body (1). Then, the gears (14) and (14 ') fixed to the respective shafts make them rotatable in opposite directions, and the central portions (15) and (15) of the first shaft (8) and the second shaft (9) are The movable flipper main body (10) is supported by bearings (18) provided on the movable flipper main body (10) at the portions formed by eccentrically projecting in opposite directions to each other '). 18) and the central portion (15), (15 ') of the first shaft (8) or the second shaft (9),
At least said first axis (8) or second axis (9)
A flipper structure for a spreader for a container crane, in which either one of them supports a movable flipper body (10) with a gap that allows the movable flipper body (10) to swing while allowing rotation of both shafts (8) and (9).