JPH09255281A - Multipurpose crane - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To facilitate exchange of two types of hanging tools such as a grab and a container hanging tool. SOLUTION: A grab bucket supporting drum 51 and an opening / closing drum 52 are installed in parallel, and ropes 61 and 62 thereof are provided.
Is directly suspended. On the outside of the drums 51 and 52, there are hoisting drums 55 and 56 of the container lifting device.
There are speed reducers 53 and 54 between the drums 51 and 56 and between the drums 52 and 55, and clutches are connected between the speed reducers and between the speed reducers and the respective drums. Drum 55,
The rope of 56 suspends the sheave blocks at both ends of the container suspension, and the sheave blocks are detachable from the main body of the container suspension.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane,
The present invention relates to a multi-purpose crane that selectively uses various types of hoisting equipment, and particularly to a crane in which a winch (consisting of a hoisting drum and the like) is installed in a trolley.

[0002]

2. Description of the Related Art Many multipurpose cranes have a glove bucket and a container hanger selectively used. The lifting rope is commonly used, and only the hanging tool is replaced. When a grab bucket is used, an electric grab bucket is used. The container hanger and grab bucket are detachably attached to the sheave block suspended by the lifting rope. Such a crane is disclosed in Japanese Patent Application Laid-Open No. 02-276795.

There are various positions for installing the winch, but there is a winch installed on a trolley that travels.

[0004]

Problems to be Solved by the Invention
According to the multipurpose crane disclosed in Japanese Patent No. 6795, when a grab bucket is used, it is necessary to be electrically driven. The electric grab bucket is large and is not suitable for a grab bucket having a large cargo handling capacity.

It is an object of the present invention to provide a multi-purpose crane capable of performing all operations of two types of hoisting equipment with a winch installed on a trolley.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to wind two first ropes supporting a grab,
A first drum installed with its axis oriented in the width direction of the trolley, and two second ropes for opening and closing the glove, which are installed parallel to the first drum, A third drum that reels out the second rope from a position near the reeling-out position of the first rope from the first drum, and two third ropes that suspend one end of a long object. And a third drum, which is on the same axis as the axis of the first drum and is closer to the end portion in the width direction than the first drum, and one end of the long object is hung. A fourth rope wound around a fourth rope, which is on the same axis as the axis of the second drum and which is installed closer to the end portion in the width direction than the second drum. A drum, and a first speed reducer provided between the first drum and the third drum,
A second speed reducer provided between the second drum and the fourth drum; a first electric motor installed closer to the end portion in the width direction than the first speed reducer; A second electric motor installed closer to the end portion in the width direction than the second speed reducer; a clutch connecting the first speed reducer and the second speed reducer; the first speed reducer and the second speed reducer. A clutch installed between the first drum and the third drum, and the second drum
This can be achieved by constructing a multi-purpose lane from the speed reducer and the clutches respectively installed between the second drum and the fourth drum.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is applied to a multipurpose crane which selectively uses a container lifting device and a grab bucket will be described with reference to FIGS. 1 to 8.

The state of FIG. 8 is a state in which the grab bucket 100 is used. At this time, the sheave block of the container hanger has been wound up and is not shown.

A girder 30 on which a trolley 80 equipped with a winch (consisting of a lifting drum or the like) travels is supported by four legs 31 and 32. A space 33 between the sea-side leg 31 and the land-side leg 32 is the land-side cargo handling position of the container. Grab bucket 1 further on the land side than the land side leg 32
A hopper 38 for receiving bulk items from 00 is installed.
When loading and unloading the container, the trolley 80 travels between position 33 and the ship. When loading bulk goods, the trolley 80 travels between the ship and the hopper 38. Trolley 80
Runs on the girder 30 by known means.

1 to 6, the trolley 80 includes:
A drum 51 for supporting the grab bucket 100, a drum 52 for opening and closing, and a drum 5 for hoisting the container lifting device 150.
5, 56, electric motors 67, 68 for driving these drums 51, 52, 55, 56, reduction gears 53, 54, etc. are installed. 67a and 68a are brake devices. Each of the drums 51, 52, 55 and 56 has a braking device, but is not shown.

The shaft center of the opening / closing drum 52 is the supporting drum 5.
It is parallel to one axis. Both are arranged horizontally in the traveling direction of the trolley 80. The space between the supporting drum 51 and the opening / closing drum is substantially the central portion in the traveling direction of the trolley 80.

Support drum 51 and winding drum 56
And are connected on the same axis through a speed reducer 53 and clutches 59 and 60. There is a speed reducer 53 between the two drums 51 and 56. Opening / closing drum 52 and winding drum 5
5 is connected on the same axis through a speed reducer 54 and clutches 63 and 64. There is a speed reducer 54 between the two drums 52 and 55. The two reduction gears 53 and 54 are connected by a shaft 57 and a clutch 58. The drums 55 and 56 are connected via speed reducers 53, 54, a shaft 57, and a clutch 58. Let's wind up the container hanger 150 Drum 5
Reference numerals 5 and 56 are outside the drums 51 and 52 of the glove bucket 100, that is, in the width direction of the trolley 80 (direction perpendicular to the traveling direction).

Electric motor 67 (68) and drum 56 (55)
Are aligned in the horizontal direction in the traveling direction. The axes of the electric motors 67 and 68 are parallel to the axes of the drums 56 and 55. The drums 51, 52, 56, 55 are at the same height. The motors 67, 68 are at the same height. Reducer 53,
54 are at the same height.

The clutches 58, 59, 60, 63 and 64 operate independently. In FIG. 1 and FIG. 2, the circle marks attached to the clutches 58, 59, 60, 63 and 64 indicate the connected (ON) state, and the X mark indicate the separated (OFF) state.

FIG. 1 shows a state of connection of the clutch during loading and unloading with a grab bucket. Two reduction gears 53,
The clutch 58 connecting the clutch 54 is in a disengaged state. The clutches 60, 64 of the hoisting drums 56, 55 are in a separated state. The support drum 51 of the grab bucket and the clutches 59 and 63 of the opening / closing drum 52 are in a connected state. The drum 51 rotates in the opposite direction to the drum 52. According to this, only the grab bucket can be supported and can be opened and closed. The opening and closing of the grab bucket is performed as is known.

FIG. 2 shows the state of connection of the clutch during the loading and unloading of the container lifting device 150. The support drum 51 of the grab bucket and the clutches 59 and 63 of the opening / closing drum 52 are in the separated state. Two reducers 53, 54
The clutch 58 for connecting is in the connected state. The clutches 60 and 64 of the winding drums 56 and 55 are in a connected state. The drum 55 rotates in the opposite direction to the drum 556. The electric motor 67 rotates in the opposite direction to the electric motor 68. According to this, only the container hanging device 150 can be wound up.

There are two supporting ropes 61, one end of which is wound around the drum 51. There are two opening and closing ropes 62, one end of which is wound around the drum 52. Rope 6
1, 62 is a drum 5 between the drums 51 and 52.
It is directly hung from each of 1, 52. The end of the suspended rope 61 is detachably attached to the glove bucket 100. The lower end of the suspended rope 62 is detachably provided at the end of the rope for opening and closing the grab bucket.

FIGS. 3 and 4 show the arrangement of ropes of the sheave blocks 151a and 151b of the container hanging device 150. As shown in FIG. The hanger 150 is a rectangular hanger body 15
3 and the sheave block 1 detachably provided on the main body 153.
51a and 15ab. Sheave block 151
The a and 151b are attachable and detachable by pins 161 at both ends of the main body 153. Both ends of one rope 65, 66 are wound around the drums 55, 56, respectively. The winding directions on both ends are the same. Drum 5 with ropes 65 and 66
The winding direction around 5,56 is opposite. The rope 66 extended from the drum 56 is the sheave 71a of the trolley 80,
The sheave 72a of the trolley 80, the sheave 155a of the sheave block 151a, the sheave 73a of the trolley 80, and the sheave 156a of the sheave block 151a are wound around the drum 56 in this order. Rope 6 from the drum 55
No. 5 is wound around the drum 55 via the sheave 155b of the sheave block 151b, the sheave 73b of the trolley 80, the sheave 156b of the sheave block 151b, the sheave 72b of the trolley 80, and the sheave 71b of the trolley 80 in this order.
There are two rope grooves on the drums 55 and 56.

With respect to the sheaves 73a and 73b, the sheaves 71a and 72a are on one side in the traveling direction, and the sheaves 71b and 72b are on the other side in the traveling direction. In other words, it is installed in front and back. The axes of the sheaves 73a and 73b are located between the drums 51 and 52. Rope 65,6
Although 6 is one, since it is substantially the same as that fixed to the trolley 80 at the points of the sheaves 73a and 73b, the number of ropes is substantially two. The rope 65 is allowed to pass below the braking device 68a.

In FIGS. 5 and 6, the raised sheave blocks 151a and 151b enter the hole of the cylinder 84 whose lower end is expanded. Then, the cylinder 84 and the sheave block 151a,
The pin 84a is inserted into the hole 159 of 151b. The cylinder 84 is installed on the lower surface of the trolley 80. According to this, since the sheave block is supported by the pin 84a, the brake of the drum can be made small or unnecessary. The movement of the sheave block due to the traveling of the trolley 80 is prevented by the pin 84a. The operator attaches and detaches the pins 84a from a scaffold installed under the trolley 80.

Next, the hanging device to be used is attached to the glove bucket 100.
Will be described in the case of using the container hanging device 150 from the above. S1: The drums 51 and 52 are operated and the glove bucket 100 is lowered to the ground. Opening / closing drum 5 before lowering
2 is operated to open the grab bucket 100 to prevent the glove bucket 100 from falling when placed on the ground. S3: The connection between the end of the support rope 61 and the grab bucket 100 is released. S5: The opening / closing drum 52 is operated to feed a predetermined amount of rope. Then, the connection of the rope joint provided in the middle of the opening / closing rope 62 is released. S7: The drums 51 and 52 are wound up and operated, and the rope 6
Raise the ends of 1, 62. Raised rope 61,
It is advisable to fix the end of 62 with an appropriate member to prevent it from shaking. S11: Running a multi-purpose crane or trolley 80
The container hangings 150 placed on the ground
The trolley 80 is positioned above the body 153 of the. S13: The connection state of the clutch is changed to the loading state by the suspending tool 150 of FIG. S17: Pull out the pin 84a for the hanging tool 150. S19: The drums 55 and 56 are operated to lower the sheave blocks 151a and 151b, and the sheave block 151 is moved.
The a and 151b and the hanging tool main body 153 are connected to each other by a connecting fitting 161. This is shown in FIG. S21: Connect the power cable of the cable basket 154 to the trolley 80. As described above, the lifting device 150 can be used for cargo handling.

Next, the hanging device used is the container hanging device 15.
A procedure for changing the grab bucket 100 from 0 will be described. S31: First, remove the power supply-cable from the trolley 80,
The power cable is stored in the cable basket 154.
Next, the drums 55 and 56 are operated, and the container hanger 150 is lowered to the ground. S33: The sheave blocks 151a, 15 of the suspender 150
A plurality of connecting fittings 161 for connecting the 1b and the main body 153 are removed. S35: The drums 55 and 56 are operated to raise the sheave blocks 151a and 151b. As a result, the sheave blocks 151a and 151b are separated from the main body 103. S37: When the sheave blocks 151a, 151a enter the tube 84, the pin 84a is inserted. S39: Running a multi-purpose crane or trolley 80
To position the trolley 80 above the glove bucket 100 placed on the ground. S41: The clutch connection state shows the grab bucket 1 of FIG.
The cargo handling state of 00 is set. S45: The drums 51 and 52 are operated to drive the ropes 61 and 6
Lower 2 S47: The supporting rope 61 is connected to the glove bucket 100. S49: The opening / closing rope 62 is connected to the opening / closing rope of the grab bucket 100. Then, the drum 52 is operated to wind up the extra opening / closing rope. S51: The drums 51 and 52 are operated to raise the grab bucket 100. As described above, the grab bucket 100 can be used for cargo handling.

According to this, since the drum can be exclusively used for the container lifting device and the grab bucket, the rope replacement work can be eliminated and only the lifting device replacement work can be performed, so that the cargo handling work can be easily switched. Is what you can do.

Further, when the glove bucket 100 is used for loading and unloading, only the sheave blocks 151a and 151b at both ends of the container hanging device 150 are provided, so that the ropes 61 and 62 are provided.
It does not get in the way. Also, grab bucket 1
00 and the hanging device 150 can be hung on the central portion of the trolley 80, and the length of the trolley 80 (length in the traveling direction of the trolley) can be reduced.

A trolley 8 is provided between the drums 51 and 52.
Since it is substantially at the center in the traveling direction of 0, the deviation of the trolley 80 to both ends of the girder 30 can be made the same.

Further, the diameter of the drum can be made suitable for the cargo handling specifications (load, hoisting speed), and the capacities of the electric motors 67, 68 can be made the same in the two cargo handling. Therefore, efficiency can be improved. Generally, the maximum hoisting speed when loading by grab bucket,
The maximum hoisting load is about half of the maximum hoisting speed and the maximum hoisting load, respectively, when the container is unloaded. For this reason, in this embodiment, the drum 51 for the grab bucket,
The diameter of 52 is made larger than the diameter of the drums 55 and 56 for containers.

The suspending tool 150 may be one that suspends a long material, and in this case, the number of ropes of the drums 55 and 56 may be one each. The grab bucket may be a grab for holding timber or the like.

Sheaves 155a and 156a (155b, 1)
56b) via the ropes 66, 65 to the hanging device 150.
Can be connected to a device for turning or tilting.

[0029]

As described above, according to the present invention, it is possible to provide a multipurpose crane in which all operations of two types of hoisting gears can be performed by a rope, and the work of exchanging the hoisting gears can be easily performed.

[Brief description of drawings]

FIG. 1 is a plan view of a trolley of a multipurpose crane according to an embodiment of the present invention.

FIG. 2 is a plan view of the trolley of FIG. 1 in another state.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

4 is a sectional view taken along line 4-4 of FIG.

5 is a right side view of FIG. 1. FIG.

FIG. 6 is a side view of the lower portion of the trolley of FIG.

FIG. 7 is a front view of the container hanging device according to the embodiment of the present invention.

FIG. 8 is a front view of a multipurpose crane according to an embodiment of the present invention.

[Explanation of symbols]

51: support drum, 52: open / close drum, 53, 5
4: Reducer 55, 56: Winding drum, 61: Support rope, 62: Opening / closing rope, 65, 66: Winding rope, 58, 59, 60, 63, 64: Clutch, 67, 68: Electric motor , 150: Hanging equipment for containers 1
50, 151a, 151b: sheave block, 153:
The body of the hanging equipment.

Claims (1)

[Claims] 1. A first drum having two first ropes for supporting a grab wound therein, the first drum having an axis oriented in the width direction of the trolley, and two first ropes for opening and closing a grab. A third rope wound around a second rope, which is installed in parallel with the first drum and reels out the second rope from a position near the reeling-out position of the first rope from the first drum. And a third rope for suspending one end of a long object, which is on the same axis as the axis of the first drum, and is more than the first drum. A third drum installed on the end side in the width direction and two fourth ropes hanging one end of a long object are wound, and the same axis as the axis of the second drum. A fourth drum installed above the second drum and closer to the end portion in the width direction than the second drum; First speed reducer provided between the drum and the third drum, a second speed reducer provided between the second drum and the fourth drum, and the first speed reducer A first electric motor installed closer to the end portion in the width direction than the second electric motor; a second electric motor installed closer to the end portion in the width direction than the second speed reducer; A clutch connecting the second speed reducer, a clutch installed between the first speed reducer and the first drum, and the third drum, respectively, the second speed reducer and the second A multi-purpose lane consisting of a drum, and a clutch installed between the drum and the fourth drum, respectively.