JP3031548B1 - Container crane container lifting equipment position adjustment device - Google Patents

Abstract

Kind Code: A1 Abstract: The position of a container hanging crane for container handling can be easily adjusted in the traveling direction of a container hanging crane and the swing of the container in the traveling direction during transport is suppressed. Provide equipment. A trolley frame (2a) is located in an upright plane parallel to a traveling direction of a container handling crane (1).
Ropes 7a and 7b, which are disposed over the container and the container hanger 5 and are driven by the hoisting drum 3,
a and 7b, which is capable of adjusting the traveling direction position of the container hanging device 5 by adjusting the traveling direction position thereof, there is no need to adjust the position of the entire crane 1 in the traveling direction. The position of the hanging tool 5 in the traveling direction can be accurately and quickly adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the position of a container hanger of a container handling crane, and more particularly to a container of a container handling crane capable of easily adjusting a position of a container hanging tool in a direction parallel to a traveling direction of the crane. The present invention relates to a hanger position adjusting device.

[0002]

2. Description of the Related Art A container handling crane used in a container yard or the like is for loading and unloading between a container yard and a trailer chassis, and is a type of container handling crane that runs on rails laid on the container yard. There are cranes (RMG) and tire-type container handling cranes (RTG) that travel freely on a container yard or according to a travel route.

As shown in FIG. 1 according to the embodiment, all of these container handling cranes are formed in a gate shape straddling a large number of containers. A pair of leg structures and a beam structure attached to the upper end thereof are formed in a gate shape, and a plurality of running wheels (drive wheels and driven wheels) are provided at lower ends of the front and rear leg structures. The structure is equipped with a trolley that can traverse in the front-rear direction along with it, and is driven up and down via a main winding rope by a hoisting device provided on a trolley frame of the trolley, and a container lifting device for hanging a container. Having.

A crane driver operates a crane from an operator's cab attached to a trolley frame, moves a container handling crane in the left-right direction, traverses the trolley along a beam structure, and raises and lowers a container lifting device by a hoisting device. Let the cargo work. The container hanger is provided with a fixing device for fixing the container at four corners thereof, a guide mechanism for guiding the container, and the like.

Although this container handling crane is provided with an anti-sway device for suppressing the container from swaying, it is not very effective. The landing accuracy of the container decreases. Even when containers are stacked in a stack on another container, it is difficult to position the suspended container and the work efficiency is reduced.

On the other hand, Japanese Patent Laid-Open Publication No. Hei 10-203774 proposes a container handling crane capable of suppressing the container from swaying during transportation. In this container handling crane, four first sheaves and four second sheaves are provided near four corners of the trolley, and four third sheaves are provided at both left and right ends of the trolley. Four first ropes are wound around a hoisting drum installed on a trolley, and these four first ropes are sequentially mounted on a first sheave and a second sheave, respectively. At the center in the front-rear direction. Four second ropes are also wound on the hoisting drum, and these four second ropes
The rope is hung on four third sheaves and hangs four central portions in the left-right direction at both front and rear ends of the upper surface of the container hanging device.

According to this container handling crane, 4
Since the first ropes of the container are symmetrically mounted on the vertical surface in a vertical plane perpendicular to the traveling direction and symmetrically with respect to the vertical direction, the front and rear directions of the container and the container hanging device are interposed through these four first ropes. Can be suppressed. In addition, since the four second ropes are symmetrically mounted in a vertical plane in a vertical plane parallel to the running direction and in a substantially triangular shape, it is possible to suppress the lateral swing of the container and the container hanging device. Can be.

[0008]

However, in a conventional container handling crane and the container handling crane disclosed in the above publication, containers are transported by the crane.
To adjust the position of the container hanger in the traveling direction when there is an error in the traveling stop position of the crane when stacking containers in multiple stages, run the entire crane a small distance and adjust the position in the traveling direction. Must. However, since these container handling cranes have a weight of 100 tons or more, the entire container handling crane that holds the containers is run, for example, ± 100 m.
Fine adjustment of the traveling direction position of m or less requires a high level of skill of the crane operator, and generally poses a problem that the work efficiency of the cargo handling operation is deteriorated.

An object of the present invention is to make it possible to easily adjust the traveling direction position of a container hanging tool of a container handling crane, to suppress the container from swinging in the traveling direction during transport, and the like.

[0010]

According to a first aspect of the present invention, there is provided a container hoist position adjusting device for a container handling crane, wherein the trolley has a hoisting drum and a plurality of main winding ropes driven by the hoisting drum. A container handling crane provided with a held container hanger, a hoisting drum disposed over the trolley frame and the container hanger so as to be located in an upright plane parallel to the traveling direction of the crane. And a hanger position adjusting means capable of adjusting the running direction position of the container hanger by adjusting the running direction position of the auxiliary rope. .

During loading and unloading of the container, the crane is moved to transport the container. At a place where the container is loaded or unloaded, the crane is stopped at a desired stop position, and a plurality of main winding ropes are wound by the hoist drum. The container hanging tool can be moved up and down with respect to the trolley by taking out or feeding out. If the traveling stop position of the crane slightly deviates from the desired stop position in the traveling direction during the loading of the container, the traveling direction position of the auxiliary rope is adjusted with respect to the trolley frame by the hanger position adjusting means. It is possible to adjust the position of the container hanging tool and the container in the traveling direction by making adjustments. Therefore, there is no need to run the container handling crane to adjust the position of the entire crane in the running direction, and the position of the container hanging device in the running direction can be accurately and quickly adjusted.

A container hanger is hung on a trolley via a plurality of main ropes driven by the hoisting drum, and an auxiliary rope driven by the hoisting drum is positioned in an upright plane parallel to the running direction. The trolley frame and the container hanging device are arranged so that the container hanging device is restricted in the traveling direction with respect to the trolley frame so that the container hanging device can be prevented from swinging in the crane traveling direction. it can.

According to a second aspect of the present invention, there is provided a container lifting equipment position adjusting device for a container handling crane, wherein the hanging equipment position adjusting means comprises a movable frame provided movably in the traveling direction on a trolley frame. And two sets of sheaves provided on the movable frame at a predetermined distance in the traveling direction to guide a pair of auxiliary ropes, and driving means capable of driving the movable frame in the traveling direction. It is. When the movable frame is moved in the traveling direction by the driving means when the position of the container hanging device is adjusted in the traveling direction, the two sets of sheaves guide the pair of auxiliary ropes while the movable frame and the container hanging device are moved. While maintaining the relative positional relationship, the positions of the container hanging tool and the container in the crane traveling direction can be adjusted.

According to a third aspect of the present invention, there is provided the container lifting device for a container handling crane according to the second aspect, wherein a portion of the pair of auxiliary ropes between the trolley frame and the container lifting device is the same as the above. It is characterized in that it is disposed so as to be located substantially symmetrically with respect to the vertical direction in the vertical plane. Therefore, when the position of the pair of auxiliary ropes in the traveling direction of the crane is adjusted on the trolley frame side, the position of the container hanging device in the traveling direction of the crane is adjusted while maintaining the symmetry.

According to a fourth aspect of the present invention, there is provided a container lifting equipment position adjusting device for a container handling crane, wherein the pair of auxiliary ropes has a common axis provided on the container lifting equipment side. Characterized by being mounted on a sheave. A pair of auxiliary ropes form an inverted triangle in the vertical plane, the rigidity of the pair of auxiliary ropes in the vertical plane increases, and the swing of the container hanging device in the traveling direction of the crane is effectively suppressed. Can be.

According to a fifth aspect of the present invention, the pair of auxiliary ropes is provided on the container hanging side with the predetermined distance in the traveling direction. 1 separated by a smaller distance than
It is characterized by being mounted on a pair of sheaves. The portion of the pair of auxiliary ropes between the trolley frame and the container hanging device is arranged like a pair of legs of an inverted isosceles trapezoidal shape. The rigidity of the pair of auxiliary ropes in the plane is increased, and the swing of the container hanging device in the crane traveling direction can be effectively suppressed. The greater the angle of inclination of the pair of legs with respect to the vertical direction, the higher the in-plane rigidity.

According to a sixth aspect of the present invention, in the container lifting equipment position adjusting device for a container handling crane according to any one of the first to fifth aspects, when the hoist drum is driven to rotate, the auxiliary rope is a main winding rope. The winding drive or the feeding drive is performed without slack in synchronism with the above. Since the pair of auxiliary ropes are always tensioned without slack, the position of the container hanging tool can be adjusted stably by the moving drive of the movable frame, and the swing of the container hanging tool can be suppressed.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, front, rear, left, and right are defined with reference to the state viewed from the crane driver, and will be described below.

As shown in FIG. 1, the container handling crane 1 is formed in a gate shape straddling a large number of containers 51.
A pair of front and rear leg structures 52 and a beam structure 53 attached to the upper end thereof are formed in a gate shape, and a plurality of running wheels 54 (driving wheels and driven wheels) are provided at lower ends of the front and rear leg structures 52. The trolley 2 which can traverse in the front-rear direction along the beam structure 53 is provided, and the main winding ropes 4a to 4d are provided by the hoisting device 56 including the hoisting drum 3 provided on the trolley frame 2a of the trolley 2. And a container hanger 5 for lifting and lowering the container 51 through which the container 51 is hung.

[0020] The crane driver operates the trolley frame 2a.
The crane 1 for container handling (hereinafter, referred to as a crane) is operated from an operator's cab 59 attached to the crane 1, the crane 1 is moved in the left-right direction, the trolley 2 is traversed along the beam structure 53, and the container hoisting device 56 The tool 5 is moved up and down for cargo handling. The container hanging tool 5 is provided with a fixing device for fixing the container 51 at four corners thereof, a guide mechanism for guiding the container, and the like.

As shown in FIGS. 2 and 3, the crane 1
A trolley 2 movably traversed in the front-rear direction along the beam portion; a hoist drum 3 rotatably provided on a trolley frame 2a of the trolley 2 and driven to rotate forward and reverse by an electric motor; 4 driven by 3
Main winding ropes 4a to 4d
a to 4d, and a container hanger capable of adjusting the horizontal position (position in the crane running direction) of the container hanger 5 via a pair of auxiliary ropes 7a and 7b. A component position adjusting device 6 is provided.

The container hanging device 5 is provided with a fixing device for fixing the container at four corners thereof, a guide mechanism for guiding the container, and the like. It has a pair of hanger main body movable parts which are telescopically provided on both left and right sides of the center of the main body.

As shown in FIG. 2, a container hanger position adjusting device 6 for adjusting the position of the container hanger 5 in the left-right direction will be described. The container hanger position adjusting device 6 has a pair of auxiliary ropes 7a and 7b and a hanger position adjustment mechanism 8 (hanger position adjustment mechanism means). As shown in FIGS. 2 and 4, the pair of auxiliary ropes 7a and 7b are positioned substantially symmetrically with respect to the vertical direction in a vertical plane parallel to the crane traveling direction (hereinafter referred to as traveling direction). It is disposed over the trolley frame 2a and the container hanging device 5. The hanging position adjusting mechanism 8 includes these auxiliary ropes 7a, 7
The traveling direction position of the container hanger 5 is adjusted by adjusting the traveling direction position of b.

The hanging position adjusting mechanism 8 includes a movable frame 9,
Two sets of sheaves 10a1, 10a2, 10b1, 10b2
, An electric cylinder 11 (corresponding to a driving means) and the like. The movable frame 9 is formed of an elongated frame, and is disposed on the lower surface side of the trolley frame 2a with its length direction facing the traveling direction. The electric cylinder 11 has a main body fixed to the trolley frame 2a, a rod connected to one end of the movable frame 9 through a swinging piece 12, and adjusting the position of the movable frame 9 in the traveling direction by the electric cylinder 11. The position of the container hanging device 5 in the traveling direction is adjustable.

As shown in FIG. 4 and FIG.
A pair of sheaves 10a1 and 10a at the left end and right end, respectively.
a2, 10b1 and 10b2 are provided. Also, 1
A pair of sheave brackets 13 for guiding the pair of auxiliary ropes 7a and 7b, and a pair of these sheave brackets 13
, A pair of guide sheaves 14 are provided, and the pair of guide sheaves 14 is a pair of the winding drum 3 and each set of sheaves 1.
0a1, 10a2, 10b1 and 10b2.

The container hanger 5 is provided with a pair of sheaves 15a and 15b having a common axis at substantially the center of the upper surface of the container hanger 5, and the left auxiliary rope 7a extends from the hoist drum 3, The left guide sheave 14, the left sheave 10a1, the sheave 15a, and the left sheave 10a2 are mounted in this order, and the other end of the auxiliary rope 7a is fixed to the left end of the trolley frame 2a. The right auxiliary rope 7b extends from the hoisting drum 3 and is mounted on the right guide sheave 14, the right sheave 10b1, the sheave 15b, and the right sheave 10b2 in this order.
The other end of b is fixed to the right end of the trolley frame 2a. Thus, the portion between the trolley frame 2a and the container hanging device 5 of the pair of auxiliary ropes 7a and 7b forms two sides of an inverted isosceles triangle on a vertical plane parallel to the traveling direction, and the two sides are It is symmetric with respect to the vertical direction.

As shown in FIG. 6, a pair of sheaves 10a1 and 10a2 (or 10b1 and 10b2) are provided at one end and the other end of the movable frame 9 via a shaft 9a, respectively. Idler wheels 9b having a flange portion are provided at both ends via bearings. The idler wheels 9b on both left and right sides of the movable frame 9 are trolley frames 2a so as to correspond to the left and right ends of the movable frame 9.
Guide member 2 provided in the running direction
b and rollably guided along the guide member 2b.

As shown in FIGS. 2 and 3, the trolley frame 2a is further provided with four sheaves 16a to 16d, sheaves 17a to 17d, sheaves 18a to 18d, and the like. The sheaves 18a to 18d are arranged in parallel with the traveling direction, and the axial direction of the sheaves 18a to 18d is set in a horizontal direction orthogonal to the traveling direction. The container hanger 5 is further provided with sheaves 19a to 19d, and the axial direction of the sheaves 19a to 19d is arranged parallel to the traveling direction. The axial direction of the pair of sheaves 16a to 16d located at the left end and right end of the trolley frame 2a is set to be substantially vertical.

As shown in FIG. 2, the winding drum 3 has
Four main winding ropes 4a to 4d are wound, and these main winding ropes 4a to 4d are sequentially wound around sheaves 16a to 16d, sheaves 17a to 17d, and sheaves 18a to 18d. Is connected to tilting devices 20 and 21 provided on the trolley frame 2a.

The left front main winding rope 4a extends from the hoisting drum 3 and includes a left sheave 16a (upper sheave), a left front sheave 17a, a left front sheave 19a,
The main winding rope 4a is sequentially mounted on the sheave 18a on the left front side, and the other end of the main winding rope 4a is connected to a tilting device 20 mounted on the front side of the trolley frame 2a. The left rear main winding rope 4b extends from the hoisting drum 3 and includes a left sheave 16b (lower sheave) and a left rear sheave 17b.
b, the sheave 19b on the left rear side, and the sheave 18b on the left rear side, and the other end of the main winding rope 4b is connected to a tilting device 21 mounted on the rear side of the trolley frame 2a.

The right front main winding rope 4c extends from the hoist drum 3 and includes a right sheave 16c (lower sheave), a right front sheave 17c, a right front sheave 19c,
The main winding rope 4c is connected to the tilting device 20 at the other end thereof. Also,
The right rear main rope 4d extends from the hoist drum 3, and is provided with a right sheave 16d (upper sheave), a right rear sheave 17d, a right rear sheave 19d, and a right rear sheave 1d.
8d, and the other end of the main winding rope 4d is connected to the tilting device 21.

Further, between the trolley frame 2a and the container hanging device 5, the main winding ropes 4a and 4b are symmetrical in the vertical direction in a vertical plane perpendicular to the running direction with respect to the vertical direction. The main winding ropes 4c and 4d are symmetrical back and forth with respect to the vertical direction in a vertical plane perpendicular to the running direction. Here, when the winding drum 3 is rotationally driven, the auxiliary ropes 7a and 7b are driven to be wound up or fed out without loosening in synchronization with the main winding ropes 4a to 4d. That is, the length of each of the main winding ropes 4a to 4d between the trolley frame 2a and the container hanging device 5 and the length of each of the auxiliary ropes 7a and 7b between the trolley frame 2a and the container hanging device 5 are set to be substantially equal. The opening angle between the sheave of the trolley frame 2a and the sheave of the container hanging device 5 is determined by the main winding ropes 4a, 4b (4c, 4d) and the auxiliary ropes 7a, 7b.
Are set almost equal.

As shown in FIGS. 2 and 7, a tilting device 20 is provided at a front portion of the trolley frame 2a, and a tilting device 21 is provided at a rear portion of the trolley frame 2a.
These tilting devices 20 and 21 are composed of a sliding member 23 slidably provided along a guide portion 22 formed on the trolley frame 2a in the left-right direction and a hydraulic cylinder for slidingly driving the sliding member 23. 24. Sliding member 23
The main winding rope 4a (4b) is connected to the left end of the main body, the main winding rope 4c (4d) is connected to the right end of the sliding member 23, and the sliding member 23 can be moved in the left-right direction by the hydraulic cylinder 24. It is configured in.

Therefore, when the front and rear sliding members 23 are equally moved to the left, the container hanging tool 5 is inclined downward and left, and the front and rear sliding members 23 are equally moved to the right. Then, the container hanging tool 5 tilts downward to the right. If one of the sliding members 23 is moved leftward or rightward, the container hanging tool 5 tilts forward or backward. Thus, by operating both tilting devices 20 and 21 appropriately,
The inclination posture of the container hanging tool 5 can be adjusted.

Next, the operation of the container handling crane will be described. In order to adjust the position of the container hanger 5 in the traveling direction, when the entire movable frame 9 is moved in the traveling direction along the guide member 2b by the electric cylinder 11 of the hanger position adjusting mechanism 8, a pair of auxiliary ropes 7a, By keeping the auxiliary ropes 7a and 7b in the traveling direction with respect to the trolley frame 2a while keeping the triangle 7b in a triangular shape, the traveling direction position of the container hanging device 5 can be adjusted. By this position adjustment, the container hanger 5 is moved by about ± 10 in the traveling direction.
The position can be adjusted by about 0 mm. At this time, the trolley frame 2a of the four main winding ropes 4a to 4d
The portion between the container hanger 5 and the container hanger 5 follows the container hanger 5 while tilting to the left or right.

When the container hanging device 5 is moved up and down, the four main winding ropes 4a to 4d are driven by the winding drum 3 to take up or draw out, so that the container hanging device 5 is moved up and down with respect to the trolley 2. be able to. At this time, 1
The pair of auxiliary ropes 7a, 7b is composed of four main winding ropes 4a.
4d, the take-up drive or the feed-out operation is performed without slackening, so that a tension is always applied to the pair of auxiliary ropes 7a and 7b, and the movable frame 9 is stably moved and driven to position the container hanging device 5. In addition to the adjustment, the pair of auxiliary ropes 7a and 7b can suppress the swing of the container hanging tool 5 in the traveling direction.

In addition, when the traveling direction stop position of the crane 1 shifts from a desired stop position and stops during loading / unloading by the container transport crane 1, the entire crane 1 is moved for a short distance. There is no need to adjust the position by moving the container, and the position of the container hanging device 5 in the traveling direction can be easily adjusted by the container hanging device position adjusting device 6, and the position of the container hanging device 5 can be accurately adjusted. Work efficiency can be dramatically improved.

The portion between the trolley frame 2a and the container hanger 5 of the main winding ropes 4a and 4b is arranged in a vertical direction like an inverted isosceles trapezoidal leg in a vertical plane perpendicular to the running direction. Similarly, a portion of the main winding ropes 4c and 4d between the trolley frame 2a and the container hanging device 5 is an inverted leg in a vertical plane perpendicular to the traveling direction. Since they are located symmetrically with respect to the vertical direction like the two legs of the trapezoid, the swinging of the container hanging tool 5 in the front-rear direction can be suppressed via the main winding ropes 4a to 4d.

Next, a description will be given of a modification in which the above embodiment is partially modified. 1) Although the electric cylinder is employed as the driving means of the movable frame, the invention is not limited thereto, and a hydraulic cylinder and other various actuators can be applied. 2) A pair of auxiliary ropes are mounted on a pair of sheaves 15a, 15b provided on the container hanging tool side and having a common axis, but mounted on a pair of sheaves separated by a predetermined small distance in the traveling direction. May be. However, the distance between the pair of sheaves is two sets of sheaves 10a1, 10a2, 1 at both ends of the movable frame 9.
It is assumed that the distance is set sufficiently smaller than the distance between 0b1 and 10b2. 3) The tilting devices 20, 21 are not essential and can be omitted. In addition, without departing from the spirit of the present invention, it is also possible to implement the above-described embodiment with various modifications.

[0040]

According to the first aspect of the present invention, when the traveling stop position of the crane slightly deviates from the desired stop position in the traveling direction while the container is being unloaded, the lifting gear position adjusting means is provided. Thereby, the traveling direction position of the auxiliary rope can be adjusted with respect to the trolley frame to adjust the traveling direction position of the container hanging tool and the container. Therefore, there is no need to run the container handling crane to adjust the position of the entire crane in the running direction, and it is possible to accurately and quickly adjust the position of the container hanging tool in the running direction, thereby improving the efficiency of container handling. It can be significantly increased.

A container hanger is hung on a trolley via a plurality of main ropes driven by the hoisting drum, and an auxiliary rope driven by the hoisting drum is positioned in an upright plane parallel to the running direction. The trolley frame and the container hanging device are arranged so that the container hanging device is restricted in the traveling direction with respect to the trolley frame so that the container hanging device can be prevented from swinging in the crane traveling direction. it can.

According to the second aspect of the present invention, when the position of the container hanger is adjusted in the traveling direction, when the movable frame is moved in the traveling direction by the driving means, the two sets of sheaves form a pair of auxiliary ropes. It is possible to adjust the position of the container hanger and the container in the crane traveling direction while maintaining the relative positional relationship between the movable frame and the container hanger while guiding. The other effects are the same as those of the first aspect. According to the invention of claim 3, when the crane traveling direction position of the pair of auxiliary ropes is adjusted on the trolley frame side, the crane traveling direction position of the container hanging tool is adjusted while maintaining the symmetry. Other effects are the same as those of the second aspect.

According to the fourth aspect of the present invention, between the trolley frame and the container hanger, a pair of auxiliary ropes form an inverted triangle in the vertical plane, and a pair of auxiliary ropes in the vertical plane. The rigidity of the rope is increased, and the swing of the container hanging device in the crane traveling direction can be effectively suppressed. The other effects are the same as those of the third aspect.

According to the fifth aspect of the present invention, the portion of the pair of auxiliary ropes between the trolley frame and the container hanging device is arranged like a pair of inverted, equilateral trapezoidal legs. Therefore, similar to claim 4, 1 in the upright plane.
The rigidity of the pair of auxiliary ropes is increased, and the swing of the container hanging device in the crane traveling direction can be effectively suppressed. The greater the angle of inclination of the pair of legs with respect to the vertical direction, the higher the in-plane rigidity. The other effects are the same as those of the third aspect.

According to the sixth aspect of the present invention, when the winding drum is driven to rotate, the auxiliary rope is driven in winding or unwinding without loosening in synchronization with the main winding rope.
The pair of auxiliary ropes are always tensioned without slack, and the position of the container hanging tool can be stably adjusted by the movement driving of the movable frame, and the swing of the container hanging tool can be suppressed. In addition, the same effect as any one of the first to fifth aspects is obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a container handling crane and containers stacked in multiple stages according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a container hanging tool position adjusting device of the crane.

FIG. 3 is a plan view of a main part of the trolley frame.

FIG. 4 is a front view (IV-IV of FIG. 3) of a hanging gear position adjusting mechanism and the like.
FIG.

FIG. 5 is a plan view of a hanger position adjusting mechanism.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a schematic plan view of the tilting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container handling crane 2 Trolley 2a Trolley frame 3 Hoisting drum 4a-4d Main winding rope 5 Container hanging tool 6 Container hanging tool position adjusting device 7a, 7b Auxiliary rope 8 Hanging tool position adjusting mechanism 9 Movable frame 10a1, 10a2, 10b1, 10b2 Sheave 11 Electric cylinder 15a, 15b Sheave

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-47-28651 (JP, A) JP-A-3-272999 (JP, A) JP-A-6-345376 (JP, A) 53986 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B66C 13/06-13/08

Claims (6)

(57) [Claims] 1. A container handling crane comprising: a trolley having a hoisting drum; and a container hanger suspended on the trolley via a plurality of main winding ropes driven by the hoisting drum. An auxiliary rope which is disposed over the trolley frame and the container hanging device so as to be located in an upright plane parallel to the container, and is driven by a hoisting drum; A hanging tool position adjusting device for a container handling crane, comprising: a hanging tool position adjusting means capable of adjusting the position of the hanging tool in the traveling direction. 2. The hanger position adjusting means guides a movable frame movably provided on the trolley frame in the traveling direction and a pair of auxiliary ropes provided on the movable frame at a predetermined distance in the traveling direction. And two sets of sheaves
2. The container hanging tool position adjusting device for a container handling crane according to claim 1, further comprising a driving unit that can drive the movable frame in the traveling direction. 3. 3. A portion of the pair of auxiliary ropes between the trolley frame and the container hanger is disposed so as to be located substantially symmetrically with respect to a vertical direction in the upright plane. The container hanging tool position adjusting device for a container handling crane according to claim 2, wherein: 4. The container handling apparatus according to claim 3, wherein the pair of auxiliary ropes are mounted on a pair of sheaves having a common axis provided on the container hanging tool side. Container crane position adjustment device for crane. 5. The pair of auxiliary ropes are mounted on a pair of sheaves provided on the container hanging device side and separated by a distance smaller than the predetermined distance in the traveling direction. Item 4. The container hanging tool position adjusting device for a container handling crane according to Item 3. 6. When the winding drum is driven to rotate,
6. The container hanging tool position adjusting device for a container handling crane according to claim 1, wherein the auxiliary rope is driven to be wound up or fed out without being slack in synchronization with the main winding rope.