JPH05270783A - Overhead crane driving device and alarm device for crane motion - Google Patents

Abstract

PURPOSE:To provide an overhead crane drive device and an alarm device about crane motion, with which the drive force of drive roller can surely be transmitted to a slide beam and workman can identify which overhead crane is approaching him. CONSTITUTION:A supporting plate 40 to bear an upper roller 36 and a lower roller 37 is suspended on a main beam 12 with possibility of swinging oscillatively. Even though the upper flange part 14A of a slide beam 14 deforms, oscillative swings generated thereby can surely put this upper flange part 14A in engagement with the upper and lower rollers 36, 37. Even though, the end of the slide beam 14 inclines to put the lower roller 36 in non-contacting state, the upper roller 37 transmits the drive force to the supporting part of the slide beam, and thereby also deformation of the slide beam can be admitted. Provision of a proprietary alarming means to inform workmen of any overhead crane approaching permits him/them to identify which crane is approaching and to make evacuation quickly.

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 hoisting, lowering and traversing functions.

[0002]

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

In this overhead crane, a traveling device (motor or the like) is mounted on a guide rail mounted orthogonally to the support columns.
Main beam whose both ends are movably supported by
There is one that is composed of a slide beam slidably supported on 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 to move the slide beam in the axial direction of the main beam. It has become.

However, when the slide beam is largely moved, or when the slide beam is deformed, the lower surface of the upper flange of the driving roller and the sliding beam are separated from each other, and the driving roller is evenly distributed on the lower surface of the upper flange. Therefore, the driving force cannot be reliably transmitted to the slide beam.

Further, when the slide beam largely moves, is separated from a part of the drive rollers and then returns to the original state, the end portion of the slide beam is slightly tilted upward due to its own weight and the hoist suspension load. As a result, the drive roller is displaced from the suspension position, and the drive 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,
Immediately the worker may not be able to determine which overhead crane is approaching him and there may be a delay in retracting to avoid the risk of collision.

[0008]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention provides an overhead crane drive device capable of reliably transmitting the drive force of a drive roller to a slide beam and discriminating which overhead crane is approaching. Another object of the present invention is to provide a movement warning device.

[0009]

According to a first aspect of the present invention, there is provided an overhead crane driving device, wherein a slide beam having a hoist having a hoisting function is mounted in a direction of an axis of a main beam traveling on a erected guide rail. Along with, in a drive device of an overhead crane to be moved, a support plate swingably suspended to the main beam, a lower roller pivotally supported by the support plate and supporting a lower surface of a support portion of the slide beam, It is characterized in that it has an upper roller axially supported by a supporting plate and arranged above the supporting portion of the slide beam, and a driving means for transmitting a driving force to the lower roller and the upper roller.

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

A drive device for an overhead crane according to a third aspect of the present invention is provided between a pair of lower rollers disposed below the supporting portion, and the supporting portion extends from one lower roller to the other lower roller. It is characterized by having a guide plate for guiding to.

According to another aspect of the present invention, there is provided an overhead crane movement warning device, wherein each of the overhead cranes working in the same area can be identified by an individual overhead crane in order to notify a worker that one overhead crane is approaching. It is characterized by the provision of various warning means.

[0013]

In the above-structured overhead crane drive device, the slide beam, to which the hoist having a hoisting function is attached, is moved along the axial direction of the main beam traveling on the erected guide rail. Since the support plate that pivotally supports the upper roller and the lower roller is swingably suspended on the main beam, even if the support portion of the slide beam is deformed, it swings and reliably supports the support portion of the slide beam. The upper and lower rollers can be engaged. Further, since the lower roller supports the lower surface of the supporting portion of the slide beam, and the upper roller is arranged above the supporting portion of the slide beam, the upper roller can be attached to the sliding beam even if the sliding beam is inclined. The driving force is transmitted to the support portion.

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 supporting portion when the lower roller supports the lower surface of the supporting portion of the slide beam. Therefore, the deformation of the slide beam can be allowed.

Further, between the pair of lower rollers, there is provided a guide plate for guiding the end portion of the supporting portion of the slide beam from one lower roller to the other lower roller. The slide beam, once leaving the constructed drive, is smoothly guided between the lower and upper rollers.

Further, when a plurality of overhead cranes are working in the same area, each of them is provided with its own warning means for informing the worker of the approach. Therefore, the worker, for example, by distinguishing the timbre of the warning sound,
You can identify which overhead crane is approaching you,
Can be evacuated quickly.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an overhead crane 10 provided with a drive device according to this embodiment is a main beam 1
2. It is composed of 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 provided upright on the upper flange portions 12A at both ends in the longitudinal direction. Traveling wheels 26 are rotatably supported on the brackets 24 via bearings (not shown).
The motor 6 is driven by a motor 18. The traveling wheel 26 suspends the main beam 12 and travels on a guide rail 30 as a track arranged on a ceiling portion 28 (see FIG. 2). In addition, as shown in FIG. 2, the motor 18 is supplied with power from a cable (not shown) connected to a lead wire 35 that slides with a trolley wire 34 installed over a plurality of columns 32, and is driven. It has become.

Further, the upper flange portion 1 of the main beam 12
A patrol light 57 and a warning alarm 59 are provided in 2A. 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 alarm 59 of each of the overhead cranes 10 emit a unique light color and a different melody, and work. Employee S is which overhead crane 1
You can identify if 0 is close to you.

As shown in FIG. 1, the main beam 12
Is provided with a drive device 38 including a pair of lower roller 36 and upper roller 37 that slidably suspends the lower surface of the upper flange portion 14A of the slide beam 14 made of H-shaped steel. The pair of lower roller 36 and upper roller 37 are used for the web 14C of the slide beam 14.
It is arranged so as to sandwich both sides of the main beam 12
A support plate 40 pivotally supported by a pin 39 is rotatably supported by bearings (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. There is. These gears 44
Engages with a gear 48 fixed to the rotation shaft of the motor 20 attached to the support plate 40, and applies a rotational force to the pair of lower roller 36 and upper roller 37. As a result, the slide beam 14
In the horizontal state, while being suspended by the pair of lower rollers 36 of the four drive devices 38, it slides in the axial direction of the main beam 12 to the left and right in the figure (direction of arrow A). A trapezoidal guide plate 53 is fixed to the support plate 40 in a side view. The guide plate 53 is arranged such that its upper surface 53A is flush with the outer peripheral upper surfaces of the pair of lower rollers 30, as shown in FIG.

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 displaced in the width direction of the upper flange portion 14A. The protrusion 50 is formed by the slide beam 14
When slides to the left and right stroke ends, it contacts the 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. Further, the protrusion 50 is disposed at a position where it does not interfere with the upper roller 37.

Further, 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 attached to 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 on the upper end of the support plate 80 via a bearing (not shown). A gear (not shown) is coaxially fixed to the end of the shaft 82 of the traveling wheel 76. This gear meshes with a gear (not shown) fixed to the rotation shaft of the motor 22 attached to the support plate 80, and applies a rotational force to the traveling wheel 76. This allows the hoist 16 fixed to the lower end of the support plate 80 to travel along the slide beam 14. Further, as shown in FIG. 2, a projection 84 is provided on the upper end portion of the support plate 80 so as to project. The projection 84 contacts the stoppers 86 fixed to both ends of the slide beam 14 when the traveling device 78 moves to the left and right stroke ends, and prevents the hoist 16 from falling off.

The hoist 16 is of an electric type, and is configured to decelerate and rotate a winding cylinder 92, around which a wire rope 90 having a hook 88 is hung, is wound to lower and lower a load.

Next, the operation of the overhead crane equipped with the drive device and the movement warning device according to this 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 a worker 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 to the east and west, a button 67 for hoisting and lowering the wire rope 90 of the hoist 16, an emergency stop button 69, in order to avoid collision with the column 32, at the position of the column 32 A travel release button 71 for releasing a mechanism for limiting 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) in the normal direction or the reverse direction to move the overhead crane 10 to the north-south north-west and to load the hoist 16 with the load. Can be rolled up and down.

Here, the two overhead cranes 1 shown in FIG.
A patrol light 57 and a warning alarm 59 are attached to the main beam 12 of 0. The patrol light 57 and the warning alarm 59 emit a unique light color and a different melody, so that the other worker S can identify which ceiling crane 10 is approaching him and can quickly evacuate.

Next, when the overhead crane 10 passes through the position of the column 32 and moves to the target unloading position (see FIG. 2), the target unloading position is the slide beam 14 here.
When the button 65 on the operation panel 61 is pressed in the lower range, 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 projection 84 and the stopper 86 reliably stop the hoist 16 so that the hoist 16 does not fall off the slide beam 14.

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 used.
When is pressed (see FIG. 9), the motor 20 of the drive device 38 is activated, and the slide beam 14 is suspended by the lower roller 36 and moved (see FIG. 1). At this time, even if the upper flange portion 14A of the slide beam 14 is slightly deformed upward, it abuts the upper roller 37 disposed above the upper flange portion 14A, so that the driving force is reliably transmitted (FIG. 7). reference). In addition, the movement of the slide beam 14 is performed by the projection 5
0 and the stopper 52 surely stop at the stroke end, so that the slide beam 14 does not drop off from the main beam 12 (see FIG. 3).

Next, when the load is suspended by the hoist 16, the slide beam 14 moves to the left (east side) from the state of moving to the right (west side) as shown in FIG.
Since the drive device 38 is pivotally supported by the pin 39 to the main beam 12 (see FIG. 1),
When no force is applied, it stands still vertically.

Next, since the left end of the slide beam 14 is slightly tilted upward due to its own weight and the hoisting load of the hoist 16, as shown in FIG.
6 is not smoothly suspended, but hits the upper surface 53A of the guide plate 53. This causes the drive device 38 to swing to the left,
The left end of the slide beam 14 is the upper surface 53 of the guide plate 53.
The lower roller 36 and the upper roller 3 are guided by A, and the driving force is transmitted by the upper roller 37.
7 (see FIG. 7). In this way, even when the slide beam 14 moves to the stroke end and the end portion is lifted, the slide beam 14 can be reliably inserted between the lower roller 36 and the upper roller 37.

[0032]

Since the present invention has the above structure, 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 ensure work safety. further,
Even when the slide beam moves to the stroke end and the end portion is lifted, the end portion of the slide beam is reliably inserted into the drive device by the guide plate.

[Brief description of drawings]

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

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

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

FIG. 4 is a perspective view showing a drive device for an overhead crane according to the present invention.

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

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

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

[Explanation of Codes] 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 Patlight (Warning Means) 59 Warning alarm (warning means)

Front page continuation (72) Inventor Katsushi Uchimura 8-21-1, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Yoshio Nakajima 8-21-1, Ginza, Chuo-ku, Tokyo Stocks Takenaka Corporation Tokyo Main Store (72) Inventor Kiyoshi Amami 2-5-14 Minamisuna, Koto-ku, Tokyo Stock Corporation Takenaka Corporation Technical Research Institute (72) Inventor Minoru Ochiai 8-21 Ginza, Chuo-ku, Tokyo No. 1 Incorporated Takenaka Corporation Tokyo Main Store (72) Inventor Takeshi Okuda 8-21-1, Ginza Chuo-ku, Tokyo Incorporated Takenaka Corporation Tokyo Main Store (72) Inventor Takeo Kawamura Chuo-ku, Tokyo Ginza 8-21-1, Takenaka Corporation Tokyo Main Store (72) Inventor Jiro Ishii 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Tokyo Head Office (72) Inventor Motoki Sata No. 8-21-1, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Hiroshi Yoshikawa Tokyo Chuo-ku, Ginza 8-chome No. 21 No. 1 stock company Takenaka Corporation Tokyo in the head office

Claims (4)

[Claims] 1. A drive device for an overhead crane, which moves a slide beam, to which a hoist having a hoisting function is attached, along an axial direction of the main beam traveling on a guide rail installed on the guide rail. A support plate movably suspended, a lower roller pivotally supported by the support plate to support the lower surface of the support portion of the slide beam, and a support roller pivotally supported by the support plate and disposed above the support portion of the slide beam. Drive device for an overhead crane, comprising: an upper roller configured to be driven; and driving means for transmitting a driving force to the lower roller and the upper roller. 2. The upper roller is arranged so that the outer peripheral surface of the upper roller has a predetermined gap with the upper surface of the support portion while the lower roller supports the lower surface of the support portion. The drive device for an overhead crane according to claim 1, wherein the drive device is an overhead crane. 3. A guide plate, which is provided between a pair of lower rollers disposed below the supporting portion and guides the supporting portion from one lower roller to the other lower roller. The drive device for an overhead crane according to claim 1 or 2. 4. A ceiling, characterized in that each of said overhead cranes operating in the same area is provided with a warning means that can be identified by each overhead crane in order to notify a worker of the approach of one overhead crane. Crane movement warning device.