JP2002154784A - Crane for conveyance of long object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crane for conveyance of a long object, provided with various functions to meet the demands of various sites. SOLUTION: In this crane for lifting, conveying, aligning and placing the long object 61, a pair of automatic hanging accessory devices 11a, 11b movable in the longitudinal direction of a lifting beam 9 by a moving device 12 are provided on the lifting beam 9 swingable by a lifting beam swing device 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to lifting, transporting, and arranging product bundles (hereinafter referred to as "long products") of long steel pipes, shaped steels and the like stored in a multi-stage rack arm type storage facility or the like. The present invention relates to a long object transport crane to be used.

[0002]

2. Description of the Related Art FIGS. 11 and 12 show a general example of a conventional crane for transporting long objects. As shown in the figure, a pair of frames 53a, 53 is mounted on wheels 52 rotatably provided on rails 51 laid on the ground.
b is erected. A girder 78 is bridged and fixed between the pair of frames 53a and 53b. A rail 55 is laid on the girder 78, and a winch 54 is provided on a carriage 56 running on the rail 55.

[0003] Usually, one or a plurality of pulleys 58 are rotatably mounted at the center of the suspension beam 57.
The hoisting cable 5 wound around the winch 54 via the pulley 58
9, the suspension beam 57 is suspended and supported, and the suspension beam 57 is raised and lowered by rotating the winch 54 forward and backward.

At both ends of the suspension beam 57, a suspension device 60 is provided.
Is installed. The conventional hanging device 60 has only a hook attached to a lower end thereof. For slinging, two workers stand on both sides of the long object 61 to extend a sling 69 such as a chain or a wire rope. It was fed from one of the dunnage gaps formed between the lower surfaces of the shank 61, received by another worker on the opposite side, and hung by hooks.

[0005] However, this method requires a lot of manpower, is inefficient, and involves danger. Therefore, in recent years, an automatic hanging device as described later has been provided (JP-A-2000-2000).
No. 16746). This automatic hanging device is shown in FIG.
The outline will be described with reference to FIG.

As shown in FIG. 13, support columns 62 are suspended from both ends of a suspension beam 57, and a hanger main body 63 is supported at a lower end of the support column 62 via a rotation mechanism 64 so as to be able to rotate 180 °. Have been.

As shown in FIG. 14, the turning mechanism 64 has a supporting column 62 and a hanging body 63 connected via a turning bearing 65, and a gear 6 is attached to an outer ring portion of the turning bearing 65.
6 is fitted. By rotating the pinion 67 meshing with the gear 66 in the forward / reverse direction by the motor 68 fixed to the support column 62, the hanger main body 63 can be turned.

As shown in FIG. 13, a hanging unit 70 for taking in and out the sling 69 is provided on one bracket of the hanging body 63, and a take-in unit 71 for taking in the sling 69 is provided on the other end. The main body 63 is provided movably in the longitudinal direction.

Therefore, when slinging, first, the sling 69 descends from the hanging unit 70 to a predetermined position,
The intake chain 72 (no-back chain) descends from the intake unit 71.

Next, the take-in chain 72 is moved from a predetermined position.
Extends horizontally, hooks a connecting bar 74 attached to the lower end of the sling 69 with a hook 73 provided at the end thereof, and pulls the take-in chain 72 into the take-in unit 71 as it is.

When the connecting bar 74 of the sling 69 reaches just above the suspending pin 75, the suspending pin 75 moves forward by the extension operation of the air cylinder 76, and the sling 69 is connected to complete the slinging operation.

With the automatic hanging device described above, the work that conventionally required two slingers and one crane operator can now be performed by one crane operator, and significant labor saving can be achieved. The safety was secured by remote control.

[0013]

However, in the storage facility for the long object 61, since the length and shape of the long object 61 are different, oblique suspension may be required. There are various requirements for on-site work, such as the need to change the direction angle, lift and align and place while adjusting, but a versatile long object transport crane that can meet all of these requirements is required. Not yet in practical use.

The present invention has been made in view of the above circumstances, and provides a general-purpose, long-size object transporting crane having various functions in order to respond to various demands at the site.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a construction of the present invention is to provide a long object transporting crane which lifts, transports, and aligns and mounts long objects, forming a pair in the longitudinal direction. A suspension beam provided with an automatic suspension device is provided so as to be pivotable toward the frame via a suspension beam pivoting device.

Further, the automatic hanging device is provided so as to be movable in the longitudinal direction of the hanging beam via a moving device.

In the above suspension beam turning device, the suspension frame on the frame side and the suspension beam are connected via a rotation bearing, one of the screw jacks is fixed to the rotation frame, and the other is fixed to the suspension beam. It is characterized by.

In the moving device, two sets of sprockets are provided on a shaft rotatably supported in a direction transverse to a longitudinal middle portion of the suspension beam, and sprockets corresponding to these sprockets are attached to both ends of the suspension beam. And the supporting columns of the automatic hanging device, which are slidably attached to the suspension beams, are mounted on and under the chains, respectively. Features.

Further, the hanging body of the automatic hanging apparatus is provided so as to be able to turn through 180 ° via a turning mechanism.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a crane for transporting long objects according to the present invention.

[Embodiment] FIG. 1 is a side view of a long object conveying crane according to one embodiment of the present invention, FIG.
FIG. 3 is a side view of the suspension beam swivel device, and FIG.
A sectional view, FIG. 5 is a plan view of a moving device of the automatic hanging device, FIG. 6 is a side view thereof, and FIG. 7 is a structural explanatory view of the moving device, and FIG. , FIG.
5 is a cross-sectional view taken along the line CC of FIG. 5, FIG. 8 is an explanatory diagram of a turning adjustment operation of a long object, FIG. 9 is an explanatory diagram of an oblique hanging operation of a long object, and FIG.
7A and 7B are explanatory diagrams for comparing the operation and the effect, and FIG. 7A is an explanatory diagram of a conventional required yard space, and FIG. 7B is an explanatory diagram of a yard space of the present invention.

In FIGS. 1 and 2, wheels 52 are provided rotatably on a pair of left and right rails 51 laid in parallel, and the wheels 52 are provided with frames 1a and 1b, respectively.
And a spar 2 is spanned and fixed between the left and right frames 1a and 1b. A pair of front and rear rails 28 are laid at appropriate intervals in the longitudinal direction of the upper surface of the girder 2, and the bogie 3 is provided on the rails so as to be able to run freely.

A winch 4 is fixed on the carriage 3, and the winch 4 is configured by connecting a drum 6 to a driving device 5. One end of the wire rope 29 is fixed to the carriage 3, and the other end is connected to the drum 6 via the pulley 8 fixed to the hanging member 7.
The hanging member 7 is moved up and down by the forward / reverse driving of the driving device 5.

A suspending beam turning device 10 for horizontally turning the suspending beam 9 is provided between the suspending device 7 and the suspending beam 9, and an upper surface of the suspending beam rotating device 10 is connected to the suspending device 7, and a lower surface thereof. Is fixed to the suspension beam 9. Automatic hanging devices 11a and 11b are attached to both ends of the hanging beam 9, and further, on the side surface of the hanging beam 9,
A moving device 12 is provided for moving the automatic hanging devices 11a and 11b along the longitudinal direction of the hanging beam 9.

Next, each device described above will be described in detail. First, the suspension beam turning device 10 will be described with reference to FIGS. In the figure, a bracket fixed to the hanging tool 7 and a bracket fixed to the upper surface of the revolving frame 14 are connected by pins 13,
, The outer ring portion of the slewing bearing 15 is fixed. The inner ring of the slewing bearing 15 is attached to a bracket 16 fixed to the suspension beam 9.

A screw jack 17 is fixed to the revolving frame 14, and a tip end of the screw jack 17 is connected to a pedestal 18 fixed to a bracket 16. Thereby, the screw jack 17 expands and contracts in the horizontal direction.
Then, the suspension beam 9 horizontally rotates around the swing bearing 15 by the expansion and contraction of the screw jack 17.

Next, FIG. 5, FIG. 6, FIG.
(B), the moving device 12 of the automatic hanging device 11a, 11b will be described. As shown in FIG. 7A, a shaft 20 is provided at a middle portion in the longitudinal direction of the suspension beam 9 so as to penetrate the side surface of the suspension beam 9, and is rotatable via a bearing 21 attached to a side plate 27. Installed.

Two sets of sprockets 22a and 22b combined with an appropriate clearance are fixed to the shaft 20, and one end of the shaft 20 is provided with a drive motor 2a.
3 are connected. A pair of sprockets 24a and 24b are also rotatably attached to both ends in the longitudinal direction of the suspension beam 9, and are provided at the center of the suspension beam 9.
Chains 25a and 25b are wound between the inner sprocket 22a and the sprocket 24a and the outer sprocket 22b and the sprocket 24b.

Then, as shown in FIG. 7 (b), the lower part of the chain 25a to be wound is fixed by the connection joint 26 fixed to the support column 62 of the automatic hanging device 11a, and Is fixed above the chain 25b. The upper surface of the suspension beam 9 and the surface where the support column 62 is fitted can be easily slid by the liner.

Accordingly, by driving the drive motor 23 in the normal and reverse directions, the automatic hanging devices 11a and 11b can be moved by the same distance from each other and freely from and to near. Note that the configuration and function of the automatic hanging device 11a and 11b are the same as those described in "JP-A-2000-16746" described in detail with reference to FIGS. .

With this configuration, the operation of the crane for transporting long objects according to the present invention is performed by one crane operator in an operation room (not shown) installed on the crane machine. .

That is, when the long object 61 is lifted or aligned and placed by the long object conveying crane, the position in the X direction (longitudinal direction of the long object 61) is set to the rail 51 as shown in FIG. Is determined by wheels 52 traveling back and forth,
The position in the Y direction is determined by the position of the truck 3 moving on the rail 28 on the spar 2.

The center axis of the long object 61 in the longitudinal direction and the center of the crane, that is, the shift in the θ direction, can be easily corrected by extending or contracting the screw jack 17 of the suspension beam swivel device 10. it can.

If the positioning accuracy of the long object 61 is poor and the center is misaligned, the crane operator operates the suspension beam swivel device 10 to move the center axis of the suspension beam 9 in the longitudinal direction to the long object 61. Automatic hanging equipment 11 according to the longitudinal central axis
Operate a and 11b to lift. Similarly, even when the suspended long objects 61 are aligned and placed, the suspended beam swivel device 10 can correct the misalignment and place the suspended long objects 61.

In other words, the provision of the suspension beam swivel device 10 eliminates the need to strictly control the placement accuracy of the long object 61, thereby greatly improving work efficiency.

The long objects 61 to be stored in the storage facility or the like include objects of various lengths from very long ones to relatively short ones. However, the automatic hanging device 11a, 1
Activating the moving device 12 of 1b, the automatic hanging device 11a,
11b can be moved to any optimal position of the long object 61 and stably lifted.

Next, as shown in FIG. 9, when the object is lifted from a truck or the like, a height difference often occurs in the longitudinal direction of the long object 61.

At this time, the left and right automatic hanging device 11a, 1
1b can be operated independently, so that the hanging height (length of the sling 69) of the left and right automatic hanging devices 11a and 11b can be set according to the height difference of the long object 61, and can be lifted. Therefore, it is possible to stably lift the long object 61 having a height difference, which has been difficult in the related art.

Further, the automatic hanging device 11 described above
The working space on the side of the hanging unit 70 for the a and 11b only needs to secure a space necessary for raising and lowering the sling 69. Therefore, it is sufficient to secure a very small gap d (normally 50 to 60 cm). Intake chain 7
Since there are two guides and the like, a considerably large space L is required.

Therefore, in the conventional method of sequentially arranging and mounting the long objects 61, as shown in FIG.
A wide space L was required. However, FIG.
As shown in FIG. 0 (b), for example, when the second row is to be aligned and placed, the automatic hanging device 11a, 11b
Automatic hanging device 11a, 11b
(Strictly speaking, the hanger main body 63) is horizontally swiveled 180 ° and lifted up, and is aligned and mounted as it is. When the third row of aligned mounting is performed, the automatic hanger device 11a, 11b is horizontally rotated 180 °. Return to the original state, lift and place. By repeating this operation sequentially, the sheets can be alternately placed at a narrow interval (d).

That is, by effectively utilizing the turning mechanism 64 of the automatic hanging device 11a, 11b, the space required for the stockyard of the long object 61 can be saved and effectively used.

The present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. For example, a device other than the configuration shown in FIGS. 13 and 14 may be used as the automatic hanging device.

[0043]

As described above, according to the first aspect of the present invention, there is provided a crane for transporting long objects which lifts, transports and aligns and mounts long objects. Since the hanging beam provided with the fixture device is provided so as to be pivotable on the frame side via the suspension beam rotating device, there is no need to strictly regulate the placement accuracy of the long object, and the work efficiency is greatly improved. It is possible to provide a versatile and long-sized object transport crane that can be improved.

According to the second aspect of the present invention, since the automatic hanging device is provided so as to be movable in the longitudinal direction of the suspension beam via a moving device, the automatic hanging device can be compared with a very long object. It is possible to provide a highly versatile long object transport crane that can handle long objects of various lengths up to a very short one.

According to the third aspect of the present invention, the hanging beam turning device connects the turning frame on the frame side and the hanging beam via a turning bearing, fixes one of the screw jacks to the turning frame, and lifts the other. Since the suspension beam is fixed to the beam, the suspension beam can be automatically swung with a simple structure.

According to the fourth aspect of the present invention, the moving device is provided with two sets of sprockets on a shaft rotatably supported in a direction transverse to an intermediate portion in the longitudinal direction of the suspension beam, and corresponds to these sprockets. Sprockets are provided separately at both ends of the suspension beam, and a chain is wound between the corresponding sprockets, and respective support columns of the automatic suspension device slidably attached to the suspension beam are mounted on the chain. , It is possible to move the pair of automatic hanging devices simultaneously and freely with one drive source.

According to the fifth aspect of the present invention, the hanging body of the automatic hanging apparatus is provided so as to be able to turn through 180 ° via a turning mechanism, so that the stockyard for long objects can be saved. Space can be measured and used effectively.

[Brief description of the drawings]

FIG. 1 is a side view of a crane for transporting a long object according to one embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the suspension beam turning device.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view of a moving device of the automatic hanging device.

FIG. 6 is a side view of the same.

7 (a) and 7 (b) are cross-sectional views taken along the line BB of FIG. 5, and FIG. 7 (b) is a cross-sectional view taken along the line CC of FIG.

FIG. 8 is an explanatory diagram of a turning adjustment operation of a long object.

FIG. 9 is an explanatory view of an oblique hanging action of a long object.

FIGS. 10A and 10B are explanatory diagrams for comparison of operation and effect. FIG. 10A is an explanatory diagram of a conventional necessary yard space, and FIG. 10B is an explanatory diagram of a yard space of the present invention.

FIG. 11 is a side view of a conventional long object transport crane.

FIG. 12 is a front view of the same.

FIG. 13 is a front view of the automatic hanging device.

FIG. 14 is a sectional view taken along line DD of FIG.

[Explanation of symbols]

 1a, 1b Frame 2 digits 3 Cart 4 Winch 5 Drive 6 Drum 7 Hanging tool 8 Pulley 9 Hanging beam 10 Hanging beam turning device 11a, 11b Automatic hanging device 12 Moving device 13 Pin 14 Turning frame 15 Turning bearing 16 Bracket 17 Screw Jack 18 Receiver 19 Servo motor 20 Shaft 21 Bearing 22a, 22b Sprocket 23 Drive motor 24a, 24b Sprocket 25a, 25b Chain 26 Connection joint 27 Side plate 28 Rail 29 Wire rope 51 Rail 52 Wheel 53a, 53b Frame 54 Winch 55 Rail carriage 57 Suspended Beam 58 Pulley 59 Hoisting Cable 60 Hanging Device 61 Long Object 62 Supporting Column 63 Hanging Tool Main Body 64 Swivel Mechanism 65 Swivel Bearing 66 Gear 67 Pinion 68 Motor 6 9 Sling 70 Suspension unit 71 Intake unit 72 Intake chain 73 Hook 74 Connecting bar 75 Suspension pin 76 Air cylinder 78 digits

Continued on the front page (72) Inventor Ryoji Teranishi 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Inside Mihara Machinery and Transportation System Plant (72) Inventor Kiyoshi Shino 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries Mihara, Ltd. Inside the machinery and traffic system plant (72) Inventor Toshio Hirasawa 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Inside the Mihara Machinery and Traffic System Plant (72) Norihiko Tajima 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries Inside Mihara Machinery & Transportation Systems Plant (72) Inventor, Atsushi Kamagata, 3 Oaza Hikari, Kashima City, Ibaraki Prefecture Sumitomo Metal Industries, Ltd. Inside Kashima Works, Ltd. (72) Ryosuke Iki, 3 Oaza Hikari, Kashima City, Ibaraki Prefecture Sumitomo Metal Industries, Ltd. Kashima Works, Ltd. (72) Inventor Katsushi Ohbuchi 1-13-12 Hachigatadai, Kashima-shi, Ibaraki F-term (reference) 3F004 AA02 AB06 AG01 AH01 AJ01 EA04 KA05 KA06 LB01 LC08

Claims (5)

[Claims] 1. A crane for transporting long objects which lifts, transports and aligns and loads long objects, wherein a hanging beam provided with an automatic hanging device is formed in a pair in the longitudinal direction via a hanging beam turning device. A crane for transporting a long object, wherein the crane is provided to be pivotable on the frame side. 2. The crane for transporting a long object according to claim 1, wherein the automatic hanging device is provided so as to be movable in a longitudinal direction of a hanging beam via a moving device. 3. The suspension beam turning device according to claim 1, wherein the suspension beam turning device connects the turning frame on the frame side and the hanging beam via a turning bearing, fixes one of the screw jacks to the turning frame, and lifts the other. A crane for transporting long objects, which is fixed to a beam. 4. The moving device according to claim 2, wherein the moving device is provided with two sets of sprockets on a shaft rotatably supported in a direction transverse to an intermediate portion in a longitudinal direction of the suspension beam and corresponding to these sprockets. Sprockets are provided separately at both ends of the suspension beam, and a chain is wound between the corresponding sprockets, and respective support columns of the automatic suspension device slidably attached to the suspension beam are mounted on the chain. And a crane for transporting long objects. 5. The hanging body of the automatic hanging apparatus according to claim 1, 2, 3 or 4, wherein the hanging body of the automatic hanging apparatus is rotated by a turning mechanism.
A crane for transporting long objects, wherein the crane is provided so as to be capable of turning by 0 °.