JP3153296B2 - Overhead crane drive and movement warning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead crane driving device and a movement warning device for driving a slide beam provided in an overhead crane having a hoisting, lowering and traversing function.

[0002]

2. Description of the Related Art In a warehouse or the like, an overhead crane having hoisting, lowering, and traversing functions, and three-dimensionally transporting a suspended load by a combination of these functions is provided.

In this overhead crane, a traveling device (such as a motor) is mounted on a guide rail mounted orthogonally to a support.
A main beam whose both ends are movably supported by
There is a slide beam slidably supported by the main beam and a hoist that moves on the slide beam (Japanese Patent Application No. 2-152467).
No.).

In such an overhead crane, the lower surface of the upper flange of the slide beam made of H-shaped steel is suspended by a plurality of drive rollers attached to the main beam, and the slide beam is moved in the axial direction of the main beam. It has become.

[0005] However, when the slide beam moves greatly or when the slide beam is deformed, the drive roller and the lower surface of the upper flange of the slide beam are separated from each other, and the drive roller is evenly spread on the lower surface of the upper flange. And the driving force cannot be reliably transmitted to the slide beam.

Further, when the slide beam largely moves and separates from some of the drive rollers and then returns to its original state, the end of the slide beam is slightly inclined upward due to its own weight and the hanging load of the hoist. Therefore, there is a case where the driving roller is displaced from the suspension position of the driving roller and the driving roller cannot suspend the lower surface of the upper flange again.

Further, when a plurality of overhead cranes work simultaneously in the same area, even if an alarm is sounded,
Workers may not be able to immediately determine which overhead crane is approaching themselves, and may delay evacuation to avoid the danger of collision.

[0008]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention can reliably transmit the driving force of a driving roller to a slide beam, and can identify which overhead crane is approaching. And a movement warning device.

[0009]

According to a first aspect of the present invention, there is provided a driving apparatus for an overhead crane, wherein a slide beam to which a hoist having a hoisting function is attached is moved in an axial direction of a main beam traveling on a guide rail provided. Along with the driving device of the overhead crane to be moved, a supporting plate swingably suspended on the main beam, a lower roller pivotally supported by the supporting plate and supporting a lower surface of a supporting portion of the slide beam, An upper roller is supported by a support plate and is disposed above a support portion of the slide beam, and driving means for transmitting a driving force to the lower roller and the upper roller is provided.

According to a second aspect of the present invention, in the driving device for an overhead crane, when the lower roller supports the lower surface of the support portion, the outer peripheral surface of the upper roller forms a predetermined gap with the upper surface of the support portion. It is characterized in that an upper roller is provided so as to have.

The driving device for an overhead crane according to claim 3 is provided between a pair of lower rollers disposed below the supporting portion, and the supporting portion is moved from one lower roller to the other lower roller. It is characterized by having a guide plate for guiding to

A driving apparatus for an overhead crane according to claim 4.
Is characterized in that each overhead crane operating in the same area is provided with a warning means capable of identifying each overhead crane in order to notify an operator of approach of one overhead crane.

[0013]

The overhead crane driving device having the above-described structure moves a slide beam to which a hoist having a hoisting function is attached along an axial direction of a main beam traveling on an installed guide rail. Since the support plate that supports the upper roller and the lower roller is swingably suspended from the main beam, even if the support portion of the slide beam is deformed, the support plate swings and securely contacts the support portion of the slide beam. An upper roller and a lower roller can be engaged. In addition, the lower roller supports the lower surface of the slide beam support, and the upper roller is disposed above the slide beam support. The driving force is transmitted to the support.

Further, the upper roller is arranged such that the outer peripheral surface of the upper roller has a predetermined gap with the upper surface of the support portion when the lower roller supports the lower surface of the slide beam support portion. Therefore, deformation of the slide beam can be tolerated.

Further, a guide plate is provided between the pair of lower rollers to guide the end of the supporting portion of the slide beam from one lower roller to the other lower roller. Once the slide beam has left the configured drive, it is smoothly guided between the lower and upper rollers.

In the case where a plurality of overhead cranes are operating in the same area, unique warning means are provided for notifying an operator of the approach. Therefore, for example, by distinguishing the tone of the warning sound,
You can identify which overhead crane is approaching you,
You can evacuate quickly.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an overhead crane 10 equipped with a drive device according to the present embodiment
2, a slide beam 14 and a hoist 16.

The main beam 12 is made of H-shaped steel, and a pair of brackets 24 facing each other are erected upward on the upper flange portions 12A at both ends in the longitudinal direction. A running wheel 26 is rotatably supported on the bracket 24 via a bearing (not shown).
6 is driven by a motor 18. The running wheel 26 suspends the main beam 12 and runs on a guide rail 30 as a track disposed on a ceiling 28 (see FIG. 2). As shown in FIG. 2, the motor 18 is driven by being supplied with power from a cable (not shown) connected to a lead wire 35 that slides on a trolley wire 34 laid over a plurality of columns 32. It has become.

The upper flange portion 1 of the main beam 12
2A is provided with a patrol light 57 and a warning alarm 59. The patrol light 57 and the warning alarm 59 are
As shown in FIG. 8, when a plurality of overhead cranes 10 work in a warehouse or the like, the patrol light 57 and the warning indicator 59 of each overhead crane 10 emit a unique light color and a different melody, and Worker S is any overhead crane 1
It is possible to identify whether 0 has approached itself.

As shown in FIG. 1, the main beam 12
Is provided with a drive device 38 including a pair of lower rollers 36 and an upper roller 37 that slidably suspend the lower surface of the upper flange portion 14A of the slide beam 14 made of H-shaped steel. The pair of lower rollers 36 and upper rollers 37 are provided on the web 14C of the slide beam 14.
Are arranged so as to sandwich both sides of the main beam 12.
The support plate 40 is rotatably supported by a pin 39 via a bearing (not shown).

As shown in FIG. 4, a gear 44 surrounded by a frame 41 is coaxially fixed to the ends of the right shaft 42 of the lower roller 36 and the right shaft 43 of the upper roller 37. I have. These gears 44
Engages with a gear 48 fixed to the rotation shaft of the motor 20 attached to the support plate 40 to apply a rotational force to the pair of lower roller 36 and upper roller 37. Thereby, the slide beam 14
Is horizontally slid in the axial direction of the main beam 12 in the horizontal direction while being suspended by the pair of lower rollers 36 of the four driving devices 38. A trapezoidal guide plate 53 is fixed to the support plate 40 in a side view. As shown in FIG. 7, the guide plate 53 is arranged so that its upper surface 53A is flush with the outer peripheral upper surfaces of the pair of lower rollers 30.

As shown in FIG. 2, projections 50 are provided at both ends of the upper flange portion 14A of the slide beam 14 so as to be shifted from each other in the width direction of the upper flange portion 14A. The protrusion 50 is provided on the slide beam 14.
When it slides to the left and right stroke ends, it comes into contact with an L-shaped stopper 52 fixed to the lower flange portion 12B of the main beam 12 to prevent the slide beam 14 from falling off. The right protrusion 50 is disposed so as to contact the left stopper 52, and the left protrusion 50 is disposed so as to contact the right stopper 52, and is further disposed at a position where it does not interfere with the upper roller 37.

As shown in FIG. 1, a traveling device 78 having a pair of traveling wheels 76 traveling on the upper surface of the lower flange portion 14B is mounted on the upper surface of the lower flange 14B of the slide beam 14. . This pair of running wheels 76
Are arranged so as to sandwich both surfaces of the web 14C of the slide beam 14, and are pivotally supported at the upper end of the support plate 80 via a bearing (not shown). A gear (not shown) is coaxially fixed to an end of the shaft 82 of the traveling wheel 76. The gear meshes with a gear (not shown) fixed to a rotation shaft of the motor 22 attached to the support plate 80 to apply a rotational force to the traveling wheel 76. Thus, the hoist 16 fixed to the lower end of the support plate 80 can travel along the slide beam 14. Further, as shown in FIG. 2, a projection 84 is provided on an upper end portion of the support plate 80 so as to project therefrom. When the traveling device 78 moves to the left and right stroke ends, the projections 84 come into contact with stoppers 86 fixed to both ends of the slide beam 14 to prevent the hoist 16 from falling off.

The hoist 16 is of an electric type. The load is wound up and down by rotating the winding drum 92 around which a wire rope 90 with a hook 88 suspended is decelerated and rotated.

Next, the operation of the overhead crane provided with the driving device and the movement warning device according to the present embodiment will be described.

As shown in FIG. 8, a plurality of overhead cranes 10 are arranged in the warehouse. The overhead crane 10 is driven by the operator M operating the operation panel 61. As shown in FIG. 9, the operation panel 61 is of a wireless type, and has a button 6 for moving the main beam 12 from north to south.
3. A button 65 for moving the slide beam 14 and the hoist 16 east and west, a button 67 for hoisting and lowering the wire rope 90 of the hoist 16, a button 67 for the emergency stop, and a button 63 for avoiding collision with the column 32. A travel release button 71 for releasing a mechanism for restricting the movement of the slide beam 14 and a main switch 73 are provided. Therefore, the worker M operates the operation panel 61 to rotate the motors 18, 20, 22 (see FIG. 1) forward or backward, thereby moving the overhead crane 10 to the north, south, east and west, and Can be wound up and down.

Here, two overhead cranes 1 shown in FIG.
A patrol light 57 and a warning indicator 59 are attached to the 0 main beam 12. Since the patrol light 57 and the warning alarm 59 emit a unique light color and a different melody, the other worker S can identify which overhead crane 10 has approached him / herself and can evacuate quickly.

Next, when the overhead crane 10 passes through the position of the support column 32 and moves to the target discharge position (see FIG. 2), the target discharge position is changed to the slide beam 14.
When the button 65 of the operation panel 61 is pressed, the motor 22 of the traveling device 78 is driven, and the hoist 16 moves along the slide beam 14. At the end of the stroke, the hoist 16 does not fall off the slide beam 14 because it is reliably stopped by the projection 84 and the stopper 86.

Next, when the target unloading position is outside the lower range of the slide beam 14, the button 65 of the operation panel 61
Is pressed (see FIG. 9), the motor 20 of the driving device 38 is operated, and the slide beam 14 is suspended and moved by the lower roller 36 (see FIG. 1). At this time, even if the upper flange portion 14A of the slide beam 14 is slightly deformed upward, the driving force is reliably transmitted because the upper beam 37 abuts on the upper roller 37 disposed above the upper flange portion 14A (FIG. 7). reference). In addition, the movement of the slide beam 14 is
The slide beam 14 does not fall off the main beam 12 because the slide beam 14 is reliably stopped at the stroke end by the zero and the stopper 52 (see FIG. 3).

Next, when the load is suspended by the hoist 16, the slide beam 14 moves leftward (eastward) from the state moved rightward (westward) as shown in FIG.
Here, since the driving device 38 is pivotally supported by the pin 39 to the main beam 12 (see FIG. 1),
When no force is applied, the robot is standing still in a vertical state.

Next, since the left end of the slide beam 14 is slightly inclined upward due to its own weight and the suspension load of the hoist 16, as shown in FIG.
6, and hits the upper surface 53 </ b> A of the guide plate 53 without being smoothly suspended. As a result, the driving device 38 swings to the left,
The left end of the slide beam 14 is the upper surface 53 of the guide plate 53
A, while the driving force is transmitted by the upper roller 37, the lower roller 36 and the upper roller 3
7 (see FIG. 7). In this manner, even when the slide beam 14 moves to the stroke end and its end is lifted, it can be reliably inserted between the lower roller 36 and the upper roller 37.

[0032]

According to the present invention, the driving force of the roller can be reliably transmitted to the slide beam. Also,
Since it is possible to identify which overhead crane is approaching, it is possible to evacuate quickly and work safety is ensured. further,
Even when the slide beam moves to the stroke end and its end is lifted, the end of the slide beam is securely inserted into the drive device by the guide plate.

[Brief description of the drawings]

FIG. 1 is a perspective view of an overhead crane to which a driving device and a movement warning device according to the present invention are applied.

FIG. 2 is a side view showing a state in which the overhead crane to which the driving device and the movement warning device according to the present invention are applied has moved to a support position.

FIG. 3 is a side view showing a state in which a slide beam of an overhead crane to which the driving device and the movement warning device according to the present invention are applied has moved.

FIG. 4 is a perspective view showing a driving device of the overhead crane according to the present invention.

FIG. 5 is a side view showing a state before the end of the slide beam is inserted into the drive device for the overhead crane according to the present invention.

FIG. 6 is a side view showing a state where the end of the slide beam is inserted into the drive device of the overhead crane according to the present invention.

FIG. 7 is a side view showing a state after the slide beam is inserted into the drive device for the overhead crane according to the present invention.

FIG. 8 is a schematic diagram showing a state in which a plurality of overhead cranes to which the driving device and the movement warning device according to the present invention are applied are arranged in a warehouse.

FIG. 9 is a plan view showing an operation panel of an overhead crane to which the driving device and the movement warning device according to the present invention are applied.

[Explanation of symbols]

 Reference Signs List 20 motor (drive means) 36 lower roller 37 upper roller 38 drive device 40 support plate 42 gear (drive means) 43 gear (drive means) 48 gear (drive means) 53 guide plate 57 patrol light (warning means) 59 warning alarm ( Warning means)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsushi Uchimura 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Office (72) Yoshio Nakajima 8-21-1, Ginza, Chuo-ku, Tokyo No. Takenaka Corporation Tokyo Main Store (72) Inventor Kiyoshi Amami 2-5-1 Minamisuna, Koto-ku, Tokyo Inside Technical Research Institute Takenaka Corporation (72) Inventor Minoru Ochiai 8-21 Ginza, Chuo-ku, Tokyo No. 1 Takenaka Corporation Tokyo Main Store (72) Inventor Takeshi Okuda 8-21-1, Ginza, Chuo-ku, Tokyo In-house Takenaka Corporation Tokyo Main Store (72) Inventor Tateo Kawamura 8 Ginza, Chuo-ku, Tokyo 21-2, Takenaka Corporation, Tokyo Head Office (72) Inventor Jiro Ishii, 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Inside the Tokyo head office (72) Inventor Motoyuki Sata 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Inside the Tokyo head office (72) Inventor Hiroshi Yoshikawa 8-2-1-1, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation (Tokyo) (56) References JP-A-3-133897 (JP, A) Japanese Utility Model 52-11307 (JP, Y2) Japanese Utility Model 53-52773 (JP, Y2) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B66C 5/00-15/06

Claims (4)

(57) [Claims] 1. A ceiling crane drive device for moving a slide beam to which a hoist having a hoisting function is attached along an axial direction of a main beam traveling on an installed guide rail. A support plate movably suspended, a lower roller pivotally supported by the support plate and supporting a lower surface of the support portion of the slide beam, and disposed above the slide beam support portion pivotally supported by the support plate. A driving device for transmitting a driving force to the lower roller and the upper roller. 2. In a state where the lower roller supports the lower surface of the support portion, the upper roller is disposed such that the outer peripheral surface of the upper roller has a predetermined gap with the upper surface of the support portion. The overhead crane driving device according to claim 1. 3. A guide plate provided between a pair of lower rollers disposed below the support portion and guiding the support portion from one lower roller to another lower roller. The overhead crane driving device according to claim 1 or 2, wherein: 4. A respective overhead crane to work in the same area, claim individual overhead crane to inform the approach of one overhead crane to the operator is characterized in that a warning means that can be identified The method according to any one of claims 1 to 3,
Overhead crane drive.