JPH1192079A - Crane, and operation method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily supply a power cable to a hanging accessary even when an interval between two trolleys is changed in a crane to hang one hanging accessary by two trolleys. SOLUTION: As an interval between two trolleys 100B, 100C is changed by an interval adjusting device 110, a hanging position of a power cable 95 is moved at a half speed of an interval changing speed. A position of an operation room 180 is moved similarly to the hanging position. Even when the interval between two trolleys 100B, 100C is changed, therefore, the hanging position of the power cable 95 to a cable basket of the hanging accessary 90 is not changed. The position of the operation room 180 to the hanging accessary 90 is not changed, either.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane in which one hanger is suspended by two trolleys.

[0002]

2. Description of the Related Art Various types of cranes for transporting one load by two trolleys have been proposed. The object of this invention is to increase the distance between the two trolleys during traveling to suppress the swing of the hanger, and to reduce the distance between the two trolleys when lowering the hanger so that the hanger does not hit an obstacle. Is to be lowered.

[0003] Japanese Patent Publication No. 58-2916 discloses a system in which two trolleys are driven by respective electric motors, and the two trolleys are accelerated with a predetermined time difference to increase the interval between the two trolleys. When stopping,
Decelerate at the same time while maintaining the trolley interval, or reduce the interval after stopping once.

[0004] Japanese Unexamined Utility Model Publication No. 49-37155 discloses a technique in which two trolleys are connected by a screw rod to change the distance between the two trolleys.

[0005] In Japanese Patent Publication No. 08-18784, in order to suspend large and small suspenders, sheaves of the trolley and the suspenders are connected to each other by pins oriented in the running direction.

Japanese Unexamined Utility Model Publication No. 61-39749 discloses two trolleys each having a hanger and a truck connecting the two trolleys. The container of the ship is lifted by a first trolley and placed on a conveyor, the conveyor is conveyed toward the land side, and then the container of the conveyor is lifted by a second trolley and dropped on the land. The conveyor rests on a girder that can move up and down and toward the sea.

[0007]

When the hanging tool is of an electric type or the like, for example, when the target load is a container, a power cable is hung from the trolley to the hanging tool. Since the hanging device is located between the two trolleys, if the distance between the two trolleys changes, the horizontal distance from the trolley to the hanging device changes. Therefore, it is necessary to change the position where the power cable is suspended from the trolley. If not changed, the power cable cannot be supplied to the cable basket of the lifting device. This point is not disclosed in the prior art. The same applies to the case where an electric grab bucket is used as a hanging tool.

Further, a detector is hung from a trolley in order to detect whether or not the hanger has risen to the ascending limit position. In addition, a camera is installed on the trolley to detect the swing of the hanging tool. In addition, an illuminator that illuminates the hanging equipment is installed. These electric devices also have the same problem as the power cable.

A driver's seat is provided on one of the two trolleys. The angle from the driver's seat to the suspension varies with the distance between the two trolleys. The driver adjusts the positions of the hanging device and the load (for example, a container) from the driver's seat while watching them. When traveling toward a load, the interval between the two trolleys is large, but when performing alignment, the interval between the two trolleys is reduced. For this reason, the angle at which the hanging member or the load is viewed from the driver's cab changes with the change in the interval, so that the alignment becomes difficult.

In addition, the distance between the two trolleys is increased to suppress the swing of the hanging member, and the distance between the two trolleys is reduced so that the hanging member can descend into a narrow space. However, it is required to further suppress the swing of the hanging tool.

A first object of the present invention is to allow a power supply cable or the like to be positioned corresponding to a position of a hanging member when one hanging member is hung by two trolleys. .

A second object of the present invention is to make it possible to easily position a hanging member and a load when one hanging member is hung by two trolleys.

A third object of the present invention is to make it possible to suppress the swing of the hanging member.

[0014]

A first object of the present invention is to suspend one suspender by two trolleys, and to suspend the suspender in the middle of the interval in response to a change in the interval between the two trolleys. And moving the electrical equipment installed on one of the trolleys relative to the one trolley in the direction of the rail on which the one trolley travels and positioning it above the hanging device. it can.

A second object is to suspend one suspender by two trolleys, and to move the suspender to an intermediate position between the two trolleys in response to a change in the interval between the two trolleys. In accordance with the movement of the hanging tool, the operator's cab installed on one of the trolleys is moved in the direction of the rail on which the one trolley travels with respect to the one trolley.
Can be achieved by:

A third object is to reduce the speed of the two trolleys, each of which suspends one suspension, and when the suspension swings in the forward direction of the two trolleys, the trolley on the front side is moved to the rear side. This can be achieved by moving the trolley in the forward direction.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
3 will be described. This embodiment is a container crane. In FIG. 1, the container crane 20 includes a sea-side leg 21, a land-side leg 22, a girder 23, two trolleys 100B, 100C traveling on the girder 23, and the like. The two trolleys 100 </ b> B and 100 </ b> C suspend one suspender 90. The girder 23 has a boom projecting toward the sea. Girder 23 including this boom.

The traveling of the trolleys 100B and 100C is performed by ropes of a traversing device installed in the machine room 30. The machine room 30 is installed in the girder 23. The lifting and lowering of the hanger 90 is performed by a rope of a hoisting device installed in the machine room 30. That is, it is a rope trolley type.

In FIG. 2, one of the ropes 41 extended from the traversing drum 40 in the machine room 30 is
Land side trolley 100B via sheave 43 on the land side
It is connected to. The other rope 42 of the drum 40 is connected to the land-side trolley 100B via the sheaves 51, 52, 53 and the sheave 54 at the sea end of the girder 23 in order. The sheaves 51 and 53 are installed above the sea-side legs 21. Sheave 52 is pulled by damper 56. The two trolleys 100B and 100C are connected by an interval adjusting device 110. The trolley 100B is a driving trolley, and the trolley 100C is a driven trolley.

In FIG. 3, ropes 61 and 62 which are unreeled from a hoisting drum 60 in the machine room 30 are provided with one of the sheaves 63 and 64 on the land side end of the girder 23, the sheave 65 of the trolley 100B, 66, sheaves 67, 68 of the hanger 90, sheaves 65, 66 of the trolley 100B
Is fixed to the sea side end of the girder 23 through the other sheave in order. The ropes 71 and 72 extended from the drum 60 are connected to the sheave 6 at the end of the girder 23 on the land side.
3, 64 other sheave, trolley 100C sheave 7
5, a sheave on one side, a sheave 77 of the hanger 90,
78, the sheaves 75 and 76 of the trolley 100C are sequentially fixed to the sea side end of the girder 23 via sheaves on the other side. The ends of the ropes 61 and 62 and the ropes 71 and 72
May be connected to the end.

4, 5 and 8, the two trolleys 100B and 100C run on the girder 23 through a plurality of wheels 101. The two trolleys 100B and 100C are connected by an interval adjusting device 110. Interval adjustment device 110
Is a rack and pinion type. The rack 1
One end of 11 is fixed to the end of trolley 100C, and the other end rests on pinion 112 at the end of trolley 100B. The rack 111 has a chain 116 fixed to the lower surface of an H-shaped steel 115 as a strength member with bolts.

The rack 111 is connected to the trolley 100C by a plurality of pins 121 so as to be rotatable horizontally and vertically. H of rack 111 is attached to the end of trolley 100C.
A roller 122 that supports the lower surface of the mold steel 115 is disposed. The trolley 100B is rotated by the
5 supports the upper piece. Roller 123 is H-shaped steel 11
5 recess. The rollers 122 and 123 are provided with flanges to suppress the left and right movement of the rack 111.

The hanging device 90 has a cable basket 95 for accommodating a power cable 96 provided on an upper surface thereof. The power cable 96 is a signal cable. The cable basket 95 expands in a trumpet shape as the opening at the upper end goes upward. For ease of explanation, the center of the cable basket 95 is located at the center of the hanging member 95 in the traveling direction of the trolley.

FIG. 5 is a plan view, but for ease of understanding, the pinions 112 and 132 and the chains 116 and 13 are shown.
4 is indicated by a solid line.

In FIGS. 4, 5 and 8, the two trolleys 100B and 100C rest on the rails 24 and 24 of the two girders 23 and 23, respectively. Two trolleys 10
0B and 100C are connected by two interval adjusting devices 110, that is, two rack and pinions. The two pinions 112, 112 are mounted on one shaft 113. An electric motor 114 rotates the shaft 113. The electric motor 114 has a speed reducer and a brake. The brake is activated when the motor stops.

The distance between the sheaves 65 and 66 of the trolley 100B and the sheaves 75 and 76 of the trolley 100C is, for example, 2
m to 6 m. The length of the rack 111 has a length of this change of 4 m (2 L in FIG. 10).

In FIG. 5, FIG. 6, FIG. 7, and FIG.
There are 5 and other mobile devices 130. The moving device 130 includes a rack 131 parallel to the rack 111 of the interval adjusting device 110,
It comprises a pinion 132 and the like. The rack 131 rests on a pinion 132 of a shaft 113. The rack 131 has a chain 134 fixed to the lower surface of a strength member 133 having a U-shaped cross section with bolts. A square pipe 135 is fixed to the upper surface of the strength member 133 by welding or the like. A power cable 96 passes through the inside of the pipe 135. The power cable 96 has been placed on the rack 131. The pipe 135 is a member for suspending the power cable 96. The power cable 96 is fixed at the end of the pipe 135. The lower end of the power cable 96 is wound around a cable basket 95.

The diameter of the pinion 132 is half the diameter of the pinion 112. For this reason, the rack 131 is
At half the speed of the trolley 100B. The moving distance of the rack 131 is the rack 111
Is half of the travel distance. The length of the rack 131 is half (2 m) of the length 2L of the variation.

The front end of the trolley 100B (trolley 100C
Side), the lower surface of the strength member 124 is
It is supported by 41. The roller 141 is closer to the trolley 100C than the pinion 132 is. At the rear end of the trolley 100B, the lower surface of the strength member 133 is supported by a plurality of rollers 142. At the rear end, a roller 143 presses the upper surface of the pipe 135. The rollers 141, 142, 143 have flanges. The tip of the strength member 133 is the trolley 1
00C.

The lengths of the racks 111 and 131 are as follows.
This is the length of the rack (chains 116, 134).
The strength members 115 and 133 and the length of the pipe
It is longer than the racks 111 and 131 because of support by 2, 123, 141, 142 and 143.

The trolley 100B suspends the cab 180. The trolley 100B has two rails 15 on its lower surface.
1 is suspended through a plurality of suspension seats 152.
The cab 180 is connected to a rail 151 via a plurality of wheels 153.
Hanged from. The distance between the cab 180 and the two rails 151 is smaller than the distance between the two rails 24. The pipe 135 and the strength member 133 that have passed through the power cable 96 are bent downward in an arc shape on the front end side. The lower end of the strength member 133 and the cab 180 are connected via a bracket 161 and a link 162.
Therefore, the cab 180 moves as the rack 131 moves. As the distance between the two trolleys 100B and 100C increases, the cab 180 moves forward,
Move to 0C side. The moving amount is the above L.

The bracket 161 has a detector 171 and a camera 172 installed thereon. Detector 171 is bracket 1
Suspended from 61. The detector 171 detects the position where the hanging device 90 is raised. That is, the detector 17
Reference numeral 1 denotes a detector for detecting whether the hanging tool 90 has risen to the upper limit. The detector 171 operates by hitting the striker 92 of the hanging device 90. This hit position is not limited to the center of the hanging device 90 in the running direction. When the detector 171 operates, the lifting of the hanging device 90 is stopped. The camera 172 photographs a predetermined position of the hanging device 90,
The trolley is used for driving the trolley, for example, to prevent the hanging tool 90 from swaying. The signal lines of the detector 171 and the camera 172 are connected to the cab 180 via a link 162.

The electric equipment of the detector 171 and the camera 172 may be installed at the lower end of the link 162 or the pipe 135.
When the predetermined position of the hanging device 90 is located in the longitudinal direction of the hanging device 90 (horizontal direction orthogonal to the rail 24), the hanging device 90 is installed above the position.

The link 162 is provided with a hanger 90 and an illuminating lamp 173 for illuminating the lower part.

As described above, the rack 13 of the moving device 130
1 can be said to suspend the detector 171, the camera 172, the illumination lamp 173, the power cable 96, and the electric equipment in the cab 180. The rack and pinion of the moving device 130 and the electric motor 114 constitute a moving device for these electric devices. A power cable 96, a detector 171, a camera 172, and an illumination lamp 173 are provided between a pair of suspension points (sheaves 65 and 66, sheaves 75 and 76) for suspending the suspender 90.

The power cable 96 at the rear end of the pipe 125 is connected to the cab 180. An arc-shaped guide 145 is fixed to the rear end of the strength member 133. The power cable 96 is fixed to the guide 145 by a fitting 146.

The operator cab 180 is connected to a land side end of the girder 23 by a curtain cable (not shown) of a power cable.
Connected with. Curtain cables are for power and signals. Curtain cables are well known. The trolley 100C has no power supply.

In such a configuration, when the vehicle is running or when steadying is to be performed, the motor 114 is driven to operate the rack 1.
11 and 131 are made to protrude from the trolley 100B. For this reason, the interval between the two trolleys 100B and 100C becomes large, and the swing of the hanging member 90 is suppressed. When lowering the hanger 90, the interval is reduced. Control of this interval is possible while the trolleys 100B and 100C are stopped or running. While traveling with trolley 100B at the top,
The interval from 0C can be enlarged or reduced. Also, trolley 1
During traveling with 00C at the top, the interval with the trolley 100B can be enlarged or reduced. The change rate of the interval is
4 The two trolleys 100B, 100B
The interval C is an interval between the sheaves 65 and 66 and the sheaves 75 and 76 of the trolley 100C.

With the change in the distance between the two trolleys 100B and 100C, the position of the hanging member 90 also changes. That is, the hanging tool 90 is provided between the sheave of the trolley 100B and the trolley 10B.
It is located in the middle of the sheave of OC. Since the pipe 135 or the rack 131 that suspends the cable 96 moves at half the speed of the rack 111 that defines the distance between the two trolleys, the position where the power cable 96 is suspended from the pipe 135 is always above the cable basket 95. .
Therefore, the power cable 96 is stored in the cable basket 95 even when the hanging member 90 is raised. However, it is assumed that the tip of the pipe 123 is located above the cable basket 95 at any position between the minimum and maximum intervals of the trolleys 100B and 100C.

Further, as the distance between the two trolleys 100 B and 100 C changes, the positions of the detector 171, the camera 172 and the illumination lamp 173 move together with the position where the power cable 96 is suspended. Therefore, the predetermined position of the hanging member 90 can always be detected and illuminated.

The driver's seat 180 also moves with the change in the distance between the two trolleys 100B and 100C. FIG.
As shown in FIG.
B, half of the change in the interval of 100C. For this reason,
The angle θ as viewed from the driver's cab 180 to the hanging device 90 does not change even if the interval between the two trolleys changes. Therefore, while changing the interval between the two trolleys 100B and 100C, the two trolleys 100B and 100C are moved to one side to
Alignment between the container 80 and the container can be easily performed. X1 and X3 are positions of the trolleys 100B and 100C when the interval is minimized. X1 and X5 are the positions of the trolleys 100B and 100C when the interval is maximized. 180X3 is the position of the cab 180 when the interval is minimized. 180X5 is the position of the cab 180 when the interval is maximized.

The operator's cab 180 is suspended from rails 151 installed in parallel below the trolley 100B. That is, the cab 180 is in parallel with the trolley 100B. For this reason, the operator's cab 180 can be arranged closer to the suspender 90 than when a rail is installed at the rear end of the trolley 100B.

The power cable 96 extends from the cab 180 to a suspended position. For this reason, the power cable 96 between the hanging pipe 135 and the cab 180
Never move. Therefore, the length of the power cable 96 between the pipe 135 and the cab 180 can be reduced.
There is no need to loosen the power cable 96 between them.

The curtain cable of the power cable connected to the land side end of the girder 23 is not connected to the trolley 100B, but is connected to the cab 180. Therefore, the movement between the land side end of the girder 23 and the cab 180 is absorbed by the curtain cable.

The operator's cab 180 is connected via a link 162 to a strength member 133 (ie, a pipe 135) suspended above the suspending device 90. For this reason, Guide 1
Compared to the case of connecting to the 45 side, the number of members can be reduced,
It can be cheap.

The pipe 135 below the arc is not required. It is sufficient that the power cable 96 does not come off from the arc-shaped strength member 133 serving as a guide.

After the two trolleys 100B and 100C are stopped, the distance adjusting device 11 is used to lower the hanging member 90.
Zero reduces the two intervals. Driving trolley 10
The driven trolley 100C moves (travels) based on 0B.
I do. For this reason, the hanger 90 moves to the trolley 100B side. Therefore, the driving trolley 100B is connected to the driven trolley 1
Run to 00C side. The traveling speed of the trolley 100B is half of the traveling speed of the trolley 100C by the interval adjusting device 110. The traveling distance of the trolley 100B is opposite to the traveling distance of the trolley 100C. The traveling direction of the trolley 100B is 10
This is the direction opposite to the moving direction of 0C. The trolley 100B is driven together with the activation of the interval adjusting device 110, and both are stopped at the same time. As a result, the position of the hanger 90 with respect to the load does not change, and it becomes easy to use.

When the distance between the two trolleys 100B and 100C is increased without changing the position of the hanging device 90 for the load, the above is reversed.

Since the driver's cab 180 is located on the driving trolley 100B, the change is less and the driver's fatigue can be reduced as compared with the case where the driver's cab is installed on the trolley 100C.

Next, a hanger 180 using this trolley
A method for suppressing the fluctuation of the image will be described. When traveling from the land side to the sea side.

The trolleys 100B and 100C sequentially perform acceleration running, constant speed running, and deceleration running by the traversing drum 40, and stop at the destination. In acceleration running and constant speed running, the two trolleys 100 are
B, the interval between 100C is minimized. For this reason, the hanger 90 hung from the trolley is in a pseudo single pendulum state. The electric motor that drives the drum 40 accelerates and decelerates to suppress the swing of the hanging tool, and determines the deceleration start position and the deceleration to operate.

After deceleration is started for stopping, the two trolleys 100B and 100C are
To increase the interval. This will be described below with reference to FIG.

The symbols at the bottom of FIG. 11 correspond to the following step numbers.

Step S1: Deceleration is started for stopping. When the deceleration is started, the hanger 90 that has been stationary swings forward (the sea side) in the traveling direction. Even the hanging tool 90 that has swung will eventually swing to the sea side.

Step S3: When the sway to the sea side is started by deceleration, the operation of the interval adjusting device 110 is started.
The distance between the two trolleys 100B and 100C is increased.
When the hanger 90 is located at the maximum amplitude position, the center of the hanger 90 is positioned at the center of the two trolleys 100B and 100C. The moving speed of the trolley 100C on the sea side with respect to the trolley 100B on the land side, that is, the distance adjusting device 11
An operating speed of 0 satisfies the above.

The maximum amplitude is determined by the length h from the trolley to the hanger, the weight and speed of the hanger 90 including the container, the swing position of the hanger at the start of deceleration, and the like. The swing cycle is determined by the length h of the hanging member 90.

Step S5: Immediately before the target position,
The distance adjusting device 110 is operated so as to reduce the distance between the two trolleys 100B and 100C. Trolley 100B
The moving speed Vc of the trolley 100C toward
When B is stopped, the position of the hanger 90 is determined to be the target position.

Step S7: When the hanging member 90 reaches the target position, the traveling of the two trolleys 100B and 100C is stopped.

Step S9: Two trolleys 100B, 1
When the interval of 00C is large, the interval is reduced by the interval adjusting device 110. As a result, the position of the hanging tool moves from the target position. In this case, it is moved by the drum 40.

In step S3, the trolley 100B is driven forward so that the center between the two trolleys is located at the maximum amplitude position of the suspender. For this reason, the run-out due to deceleration can be easily suppressed.

According to step S5, after stopping the trolley 100B, there is no need to operate the interval adjusting device 110 to reduce the interval between the two trolleys. For this reason, it is possible to immediately start the lowering operation of the hanging member 90.

If the operation speed of the interval adjusting device 110 is not the above, after stopping the trolley 100B, the interval adjusting device 11
In some cases, it is necessary to operate 0. In this case, since the position of the hanger 90 moves, the trolley 100B needs to be moved.

An operation in which the vehicle is decelerated for stopping while traveling from the sea side to the land side will be described with reference to FIG.

Step S21: Deceleration is started for stopping. When the deceleration is started, the hanger 90 that has been stationary swings forward (land side) in the traveling direction. Even the hanging tool 90 that has swung will eventually swing to the land side.

Step S23: After the hanging tool 90 swings to the land side and starts swinging to the sea side, the interval adjusting device 110
Is started to increase the interval between the two trolleys 100B and 100C. When the hanger 90 is located at the maximum amplitude position, the center of the hanger 90 is positioned at the center of the two trolleys 100B and 100C. Land side trolley 10
The moving speed of the trolley 100C on the sea side with respect to 0B, that is, the operating speed of the interval adjusting device 110 satisfies the above. S25 in FIG. 12 shows a state where the interval between the two trolleys is increased.

The maximum amplitude is determined by the length h from the trolley to the hanger, the weight and speed of the hanger 90 including the container, the swing position of the hanger at the start of deceleration, and the like. The swing cycle is determined by the length h of the hanging member 90.

Step S27: Immediately before the target position, the interval adjusting device 110 is operated so as to reduce the interval between the two trolleys 100B and 100C. Trolley 10
The moving speed Vc of the trolley 100C toward OB
When 00B is stopped, the position of the hanger 90 is determined to be the target position.

Step S29: When the hanging member 90 reaches the target position, the traveling of the two trolleys 100B and 100C is stopped.

Step S31: Two trolleys 100B,
When the interval of 100C is large, the interval is reduced by the interval adjusting device 110. As a result, the position of the hanging tool moves from the target position. In this case, it is moved by the drum 40.

Since the driver's cab 180 is located in the driving trolley 100B, the deceleration becomes constant as compared with the case where the driver's cab is installed in the trolley 100C, and driver fatigue can be reduced.

The interval adjusting device 100 and the moving device 130
Screw rod type can be used. Trolley 10
The traveling of OB can be performed by an electric motor installed on the trolley 100B.

The embodiment shown in FIG. 14 will be described. In the above-described embodiments, the trolley 100B is driven by the electric motor or the drum 40.
2 can be connected to the trolley 100C. Absorption of slack of the rope 42 due to a change in the interval between the two trolleys by the interval adjusting device 110 is performed by the damper 56. It is desirable to use a plurality of sheaves 52, 51, 52 to increase the number of ropes.

The two trolleys are connected by the interval adjusting device 110 because only one trolley 100B is driven by a drum or an electric motor. Tokiko Sho 58-
If the trolleys are driven at the respective speeds as in JP-A-2916, the interval adjusting device 110 can be dispensed with.

FIG. 15 relates to a crane that changes the hanging tool according to the load. For example, a crane that handles containers and bulk materials. In the case of loading and unloading a container, the interval between the hanging points of the hanging tool (the horizontal direction perpendicular to the rail 24) is large. However, grab bucket 2 for bulk
The interval between the hanging points of 00 is small. Sheave 67, 68, 7
7 and 78 are connected to the cable basket 9 by pins 205.
5 is connected to the hanger 90b. Hanging device 90b
Is a grab bucket 200 through a detachable pin 203.
Is suspended. The grab bucket 200 is electric. Sheaves 65, 66, 7 of trolley 100B, 100C
Reference numerals 5 and 76 are suspended from the trolleys 100B and 100C by pins 206. The axial direction of the pins 205 and 206 is the trolley 1
00B and 100C. Grab bucket 2
Since the length of 00 (the length in the horizontal direction perpendicular to the rails 24) is small, the length of the hanger 90b is short.

In order to carry out container handling, the grab bucket 200 is removed, and a container hanger is connected with the pins 203.

In order to change the distance between the hanging points in the running direction (for steadying), sheaves 65, 66, 75, 76
Consider placing them on individual trolleys installed on trolleys.
In this case, when the hanging member 90b is hung, a force acts in the width direction of the trolley, so that the bogie falls down.

However, in FIG. 15, sheaves 65, 66,
Since 75 and 76 are installed on the trolleys 100B and 100C, they do not fall down.

The embodiment shown in FIGS. 16 and 17 will be described. The girder 23 has a first trolley 100 and a second trolley 220. The first trolley 100 on the sea side is composed of two trolleys 100B and 100C. Interval adjustment device 11
0, the moving device 130, etc. are as described in the above embodiment. The second trolley 220 is one trolley, and
Having. The shuttle girder 230 is installed horizontally on the legs 21 and 22. The shuttle girder 230 can move up and down and can move horizontally toward the sea.
The carriage 233 moves on the girder 230. The gap between the pair of girders on which the cart 233 travels is larger than the length of the container.

The container is unloaded and the container is lifted by the first trolley 100 and placed on the carriage 233 at the end of the girder 230. The trolley 100B is located closer to the sea than the trolley 100C.
When the lifting device 90 is lifted above the girder 230,
The trolley 100C is moved to the land side. When the trolley 100C travels, the bogie 233 is located below the hanging member 90. Next, the hanging tool 90 is lowered, and the container is placed on the cart 2.
Place on 33. The carriage 233 travels below the second trolley 220. When the container of the cart 233 is lifted by the second trolley, the cart 233 moves to the sea side. Second
The trolley lowers the hanger 222 at that position and lowers it on the ground.

According to this, since only the trolley 100C travels on the trolley 100 on the sea side, the swing can be suppressed.

The cart can be a conveyor. In this case, the trolley 220 lowers the container on the land side than the girder 230.

The technical scope of the present invention is not limited to the language described in the claims or the language described in the section for solving the problem, and is easily replaced by those skilled in the art. It extends to a range.

[0083]

According to the present invention, if an electric device such as a power cable, a detector of a hanging tool, an illuminating lamp, and a cab is moved in accordance with a distance between two trolleys, the object of the electric device can be obtained. Can be reliably achieved. For example, a power cable can supply power to a hanging device, a detector or a camera can recognize the hanging device, an illumination lamp can illuminate the hanging device, and a driver's cab can hang the hanging device. This facilitates the positioning of the tool and the load.

Further, when the hanging member swings in the forward direction of the two trolleys during deceleration, if the front trolley is moved in the forward direction with respect to the rear trolley, the hanging member can be moved in a short time. The vibration can be suppressed.

[Brief description of the drawings]

FIG. 1 is a side view of a container crane according to one embodiment of the present invention.

FIG. 2 is an arrangement diagram of ropes for running the trolley of FIG. 1;

FIG. 3 is a layout view of the hoisting rope of FIG. 1;

FIG. 4 is a side view of the two trolleys of FIG. 1;

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 1;

FIG. 7 is a right side view of FIG. 6;

FIG. 8 is a view taken along line 8-8 in FIG. 4;

FIG. 9 is a sectional view taken along line 9-9 of FIG. 6;

FIG. 10 is a diagram illustrating a relationship between an interval between two trolleys and a cab.

FIG. 11 is a diagram illustrating a driving method when the vehicle is traveling at a reduced speed while traveling toward the sea side.

FIG. 12 is a diagram for explaining a driving method when the vehicle is traveling at a reduced speed while traveling toward the land side.

FIG. 13 is a diagram showing a continuation of FIG. 12;

FIG. 14 is a layout view of a rope according to another embodiment for running a trolley.

FIG. 15 is a longitudinal sectional view of a trolley according to another embodiment of the present invention.

FIG. 16 is a side view of a container crane according to another embodiment of the present invention.

FIG. 17 is a longitudinal sectional view of FIG. 16;

[Explanation of symbols]

23: girder, 90, 90b: hanging tool, 96: power cable, 100, 100B, 100C: trolley, 110:
Interval adjusting device, 111: rack, 130: moving device such as power cable, 131: rack, 180: cab, 20
0: grab bucket, 205, 206: pin, 220:
Trolley, 230: girder.

Claims (34)

[Claims] 1. A hanging device is suspended by two trolleys, and a moving device for moving an electric device installed on one of the trolleys is installed on the one trolley. As the distance between the two trolleys increases, the distance from the one trolley to the electric device increases, and the distance is a distance in a rail direction of the trolley. Crane. 2. The electric device according to claim 1, wherein the electric device is between a suspension point for suspending the suspension from the one trolley and a suspension point for suspending the suspension from the other trolley. The crane, wherein the electric device is a power cable connected to the hanging device. 3. The electric device according to claim 1, wherein the electric device is located between a suspension point for suspending the suspension from the one trolley and a suspension point for suspending the suspension from the other trolley, The crane, wherein the electric device is a detector for detecting a rising position of the hanging tool. 4. The electric device according to claim 1, wherein the electric device is located between a suspension point for suspending the suspension from the one trolley and a suspension point for suspending the suspension from the other trolley, A crane, wherein the electric device is a camera directed to the hanging device. 5. The electric device according to claim 1, wherein the electric device is between a suspension point for suspending the suspension from the one trolley and a suspension point for suspending the suspension from the other trolley, A crane, wherein the electric device is an illumination light directed toward the hanging device. 6. The crane according to claim 1, wherein the electric device is a cab. 7. The device according to claim 1, wherein the moving device is a rack and pinion, the electric device is a power cable connected to the hanging device, and the power cable is mounted along the rack.
A crane that is suspended. 8. The rack according to claim 7, wherein the rack suspends the power cable toward the suspender on a side closer to the other trolley, and the rack connects an operator's cab. And crane. 9. The crane according to claim 8, wherein a rail is installed below the rack and on the one trolley, and the cab is suspended from the rail. 10. The cab according to claim 9, wherein the power cable is connected to the cab via the suspension, the rack on the side closer to the other trolley, and the other end of the rack in sequence. , Characterized by a crane. 11. The rack according to claim 9, wherein the rack is provided with an arc-shaped member for guiding the power cable at an end near the other trolley, and the arc-shaped member is connected to the cab. A crane connected by a link. 12. The crane according to claim 9, wherein an end of the girder on which the two trolleys travel and the cab are connected by a curtain cable of a power cable. 13. The trolley according to claim 1, further comprising an interval adjusting device for connecting the two trolleys, the interval adjusting device adjusting an interval between the two trolleys, wherein the moving device and the interval adjusting device are one in one. A crane that operates using two electric motors as power. 14. The crane according to claim 13, wherein the electric device is a power cable connected to the hanging device. 15. The crane according to claim 13, wherein the electric device is a cab. 16. The moving device according to claim 15, wherein the moving device is a rack-and-pinion, the electric device is installed at an end of the rack near the other trolley, and the distance adjusting device is 2, wherein the pinion of the distance adjusting device and the pinion of the moving device are installed on one shaft, and the diameter of the latter is half the diameter of the former pinion. A crane characterized by: 17. The crane according to claim 16, wherein the electric device is a power cable connected to the hanging device. 18. The crane according to claim 16, wherein the electric device is a cab. 19. The trolley according to claim 1, wherein said one trolley is provided with an interval adjusting device for adjusting an interval between the two trolleys, wherein the interval between the two trolleys is adjusted by the interval adjusting device. The crane characterized in that the moving device imparts substantially half the movement to the electrical equipment with respect to the change of. 20. Two trolleys suspend one suspension, one of the trolleys is a driving trolley, the other is a driven trolley, and the distance between the two trolleys can be changed. to be able to do,
The two trolleys are connected by an interval adjusting device, and a drive source of the interval adjusting device is installed on the one trolley, and control is performed to drive the interval adjusting device and run the one trolley. A control device, wherein the control device causes the other trolley to travel in a direction opposite to a traveling direction of the other trolley while the other trolley travels by the distance adjusting device, wherein the distance adjusting device comprises: The one trolley travels for a half of the travel distance of the other trolley according to the above. 21. Two trolleys suspend one suspension, one of the trolleys is a driving trolley, the other is a driven trolley, and the distance between the two trolleys can be changed. to be able to do,
The two trolleys are connected by an interval adjusting device, and a drive source of the interval adjusting device is installed on the one trolley, and control is performed to drive the interval adjusting device and run the one trolley. Device, wherein the control device causes the other trolley to travel at a half speed in a direction opposite to a traveling direction of the other trolley while the other trolley travels by the distance adjusting device. A crane characterized by: 22. Two trolleys suspend one suspender, one of the trolleys is a driving trolley, the other is a driven trolley, and the distance between the two trolleys can be changed. to be able to do,
The two trolleys are connected by an interval adjusting device, a drive source of the interval adjusting device is installed on the one trolley, and an operator's cab is installed on the one trolley. crane. 23. A first trolley and a second trolley running on a first girder, a second girder installed below the first girder and movable up and down and horizontally. And a transport device for transporting the container from one end of the girder to the other end in the direction of the movement, wherein the first trolley comprises two trolleys for suspending one hanger. The trolley located on the land side can run freely with respect to the trolley located on the sea side. 24. A trolley suspends one suspender, and in response to a change in the interval between the two trolleys, positions the suspender in the middle of the interval. Moving the installed electrical equipment relative to the one trolley in the direction of the rail on which the one trolley travels and positioning the electric equipment above the hanging device. 25. A trolley suspends one hanging member, and moves the hanging member to an intermediate position between the two trolleys in response to a change in the interval between the two trolleys. Moving the electrical equipment installed on one of the trolleys in the direction of the rail on which the one trolley runs relative to the one trolley. 26. A hanging device suspended by two trolleys, wherein the hanging device is moved to an intermediate position between the two trolleys in response to a change in the interval between the two trolleys. Moving the operator's cab installed on one of the trolleys in the direction of the rail on which the one trolley runs relative to the one trolley. 27. A hanging member is suspended by two trolleys. The hanging member is moved to an intermediate position between the two trolleys in response to a change in the interval between the two trolleys. The method according to claim 1, wherein the distance to the operator's cab installed on the trolley is substantially the same even when the distance between the two trolleys changes. 28. The trolley according to claim 27, wherein a suspension position of a power cable suspended from said one trolley toward said suspender is set at an intermediate position between said two trolleys, corresponding to a distance between said two trolleys. A crane operating method. 29. One trolley is suspended by two trolleys, and one of the trolleys is caused to travel with respect to the other one of the trolleys, and the other one of the trolleys is moved in a direction opposite to a traveling direction of the one of the trolleys. The traveling method of the crane, wherein the traveling of the other trolley is performed by traveling a half of a traveling distance of the one trolley with respect to the trolley. 30. One trolley is suspended by two trolleys, and one of the trolleys is caused to travel with respect to the other one of the trolleys, and the other one of the trolleys is moved in a direction opposite to a traveling direction of the one of the trolleys. Operating the crane at half speed. 31. The two trolleys, each of which suspends one suspension, are decelerated, and when the suspension swings in the forward direction of the two trolleys, the trolley on the front side is moved relative to the trolley on the rear side. Moving the crane in the forward direction. 32. The crane operating method according to claim 31, wherein after the interval between the two trolleys is enlarged by the above, the interval between the two trolleys is reduced by calculating backward from a target stop position. 33. The two trolleys, each of which suspends one hanger, are decelerated. When the hanger swings in the backward direction of the two trolleys, the trolley on the rear side is moved relative to the trolley on the front side. Moving the crane in the reverse direction. 34. The crane operating method according to claim 33, wherein after the interval between the two trolleys is enlarged, the interval between the two trolleys is reduced by calculating backward from a target stop position.