JP2000229789A - Wire rope winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact wire rope winding device having strong fixing force. SOLUTION: In a wire rope winding device which has a winding drum 6 provided with a cylindrical drum main body 6a and an end plate part 6b integrally formed on an inner peripheral face of the drum main body 6a and fitted in a support shaft 12, in which wire ropes 7, 8 are wound around an outer peripheral face of the drum main body 6a, and the wire ropes 7, 8 are wound and wound back by rotating the winding drum 6 forward and reversely, recessed parts 19 are formed at both end fringes of the drum main body 6a, and basic end parts of the wire ropes 7, 8 pulled into the drum main body 6a through the recessed parts 19 are fixed on the inner peripheral face of the drum main body 6a by fasteners 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rope winding device provided in a stacker crane for exchanging works in a three-dimensional warehouse, for example.

[0002]

2. Description of the Related Art FIG. 11 shows an example of a stacker crane.
There are the following. This is a pair of front and rear square tubular masts 4 on a carriage 3 movable along a pair of upper and lower guide rails 1 and 2 arranged along a storage shelf (not shown) of a three-dimensional warehouse.
a, 4b are erected, and a work loading / unloading carriage 5 is arranged between the masts 4a, 4b so as to be able to move up and down, and two wire ropes 7, 8 drawn out from a winding drum 6 provided on the carriage 3 are provided. The tip is connected to the carriage 5 via sheaves 9 provided at the upper and lower ends of the masts 4a, 4b, and a pair of counterweights 10 for offsetting the weight of the carriage 5 are connected to the wire ropes 7, 8. In this state, it is arranged in each mast 4a, 4b so as to be able to move up and down. In addition,
Reference numeral 11 denotes a drive motor for rotating the winding drum 6 forward and reverse via the support shaft 12.

In the above configuration, when the work W is carried into the storage shelf, the carriage 3 is moved to a predetermined position,
By rotating the winding drum 6 via the support shaft 12 by the drive motor 11, the carriage 5 is raised to a predetermined height via the wire ropes 7 and 8 (see the phantom line in FIG. 11), and The work W on the slide fork 5a may be carried into a predetermined section of the storage shelf by horizontally moving the slide fork 5a. Work W
Can be carried out from the storage shelf in a procedure reverse to the above.

Conventionally, as shown in FIGS. 12 and 13, the winding drum 6 has a cylindrical drum main body 6a and an end integrally formed on the inner peripheral surface of the drum main body 6a and fitted to the support shaft 12. The wire ropes 7 and 8 are wound around a U-shaped groove 14 formed on the outer peripheral surface of the drum main body 6a, and the base ends 7a and 8a of the wire ropes 7 and 8 are provided with a plate portion 6b. The drum body 6a is formed by the plurality of fastening members 15.
Are fixed to the outer peripheral surfaces of both ends of the
Is a holding plate 15a in which a U-shaped groove 16 formed on the back surface is fitted to the base ends 7a, 8a of the wire ropes 7, 8.
And a bolt 15b for fixing each holding plate 15a to the drum body 6a.

[0005]

In the above-mentioned conventional configuration,
A space s for fixing the fastener 15 is required on the outer peripheral surfaces of both ends of the drum body 6a.
Therefore, the width H of the drum main body 6a is increased, and the winding drum 6 is increased in size.

Further, only the other side edge of the holding plate 15a is cantilevered by bolts 15b in a state where the small-width claw portion 17 formed on one side edge of the holding plate 15a is inserted between the wire ropes 7 and 8. To the base ends 7a, 8a of the wire ropes 7, 8 with a plurality of fasteners 15.
In this case, the number of parts is increased and the production cost is high.

[0007] Further, based on the technique described in Japanese Patent Application Laid-Open No. 10-167635, a bracket is bolted to the end face of the drum body 6a, and a pressing member is bolted to the bracket so that the holding member and the holding member are connected to each other. It is conceivable that the base ends 7a and 8a of the wire ropes 7 and 8 are sandwiched between the brackets. However, in this case, the number of parts is large and the production cost is high, and the end of the drum body 6a is closed by the brackets. Therefore, it cannot be applied to the both-end support type winding drum 6 that supports the drum main body 6a from both sides via the support shaft 12, and the applicable range is limited.

The present invention has been made in view of the above-mentioned conventional drawbacks, and has as its object to provide a wire rope winding device which is small and has a strong fastening force.

[0009]

In order to achieve the above object, the present invention is directed to a cylindrical drum body and an end plate formed on an inner peripheral surface of the drum body and fitted to a spindle. And a wire rope is wound around the outer peripheral surface of the drum main body, and the winding and rewinding of the wire rope is performed by rotating the winding drum forward and reverse. In the wire rope winding device described above, a concave portion is formed at the edge of the drum main body, and the base end of the wire rope drawn into the drum main body through the concave portion is fixed to the inner peripheral surface of the drum main body or It is characterized by being fixed to the end plate portion.

According to the above configuration, it is only necessary to form a small concave portion for passing a wire rope at the edge of the drum main body, so that the fastening tool is fixed to the outer peripheral surface of the end of the drum main body as in the conventional case. It is not necessary to secure the space, and the width of the drum main body can be reduced by the amount of the space that has become unnecessary, thereby achieving downsizing. Further, since the fastening device is fixed to the inner peripheral surface or the end plate portion of the drum body which is relatively wide, a large fastening device having a large fastening force is used as the fastening device, and the base end of the wire rope is used. Can be firmly fixed.

According to a second aspect of the present invention, in the first aspect of the present invention, the fastener is disposed inside the concave portion in the drum body, and the concave portion serves as a fulcrum, and a base end portion of the wire rope. Are bent inward.

According to the above configuration, the base end of the wire rope is bent and hooked on the concave portion, so that the fastening force of the fastening device can be further increased.

According to a third aspect of the present invention, in the second aspect of the present invention, the fastener comprises a pair of holding plates for holding a base end of the wire rope and a wire rope interposed therebetween. It is characterized by having a plurality of bolts which are symmetrically arranged, integrally connect the side edges of the two holding plates, and fix the two holding plates to the inner peripheral surface of the drum main body or the end plate portion.

According to the above construction, the fastener comprises a pair of clamping plates and a plurality of bolts, so that the construction is simple and the production cost is low. In addition, since the side edges of both holding plates are integrally connected by a plurality of bolts arranged symmetrically with the base end of the wire rope interposed between them, the base end of the wire rope is connected from both sides It can be securely clamped and firmly fixed to the inner peripheral surface or the end plate portion of the drum main body.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the winding drum is a winding drum for raising and lowering a carriage of a stacker crane.

According to the above configuration, it is possible to provide a stacker crane equipped with a small-sized carriage lifting winding drum having a strong wire rope fastening force.

[0017]

1 to 5 show a wire rope winding device of a stacker crane (see FIG. 11) according to an embodiment of the present invention, wherein concave portions are formed at both end edges of a drum body 6a. The base ends 7a, 8a of the wire ropes 7, 8 drawn into the drum main body 6a through the recesses 19 are fixed to the inner peripheral surface of the drum main body 6a by fasteners 20. . In the configuration other than the above, the same parts as those of the conventional example shown in FIGS.

According to the above configuration, it is only necessary to form the small concave portion 19 for passing the wire ropes 7 and 8 at the edge of the drum main body 6a.
It is not necessary to secure a space for fixing the fastener 20 to the outer peripheral surface of the end portion (see FIGS. 12 and 13), and the width h of the drum body 6a is reduced by the unnecessary space. The size can be reduced.

Since the fastening device 20 is fixed to the relatively large inner peripheral surface of the drum body 6a, a large-sized fastening device having a large fastening force is used for the wire rope 7, 8 can be securely fastened to the base ends 7a, 8a.

As shown in FIG. 4, the fastening member 20 is disposed inside the concave portion 19 of the drum body 6a.
Fulcrum, the base ends 7a, 8a of the wire ropes 7, 8
Is bent inward by a predetermined angle α, whereby the base ends 7a, 8a of the wire ropes 7, 8 are bent and caught in the concave portions 19, so that the fastening force of the fastening device 20 is further enhanced. Can be.

As shown in FIG. 3 to FIG.
Are a pair of holding plates 20 each having a U-shaped groove 21 formed on an inner surface thereof.
a, 20b, and a plurality (four in this embodiment) of bolts 20c. The wire ropes 7 are held in a state where the base ends 7a, 8a of the wire ropes 7, 8 are held between the holding plates 20a, 20b. , 8 are integrally connected by bolts 20c arranged symmetrically with the base ends 7a, 8a interposed therebetween, and the respective bolts 20c are connected to the inner periphery of the drum body 6a. By screwing into the screw holes of the substrate 22 welded to the surface,
a and 20b are fixed to the inner peripheral surface of the drum body 6a.

According to the above construction, the construction of the fastener 20 is simple and the production cost is low. Further, the base ends 7a, 8a of the wire ropes 7, 8 can be securely clamped from both sides and firmly fixed to the inner peripheral surface of the drum main body 6a.

FIGS. 6 to 10 show a wire rope winding device of a stacker crane (see FIG. 11) according to another embodiment of the present invention.
b. Since the configuration, operation and effect other than the above are substantially the same as those of the embodiment shown in FIGS. 1 to 5, the same portions are denoted by the same reference numerals and description thereof will be omitted.

In both of the above embodiments, the stacker crane has been described as an example. However, the present invention is not limited to this, and can be applied to various wire rope winding devices.

[0025]

According to the first aspect of the present invention, it is only necessary to form a small concave portion for passing a wire rope at the edge of the drum main body. It is not necessary to secure a space for fixing the clothing, and the width of the drum main body can be reduced by the unnecessary space, thereby achieving downsizing. Further, since the fastening device is fixed to the inner peripheral surface or the end plate portion of the drum body which is relatively wide, a large fastening device having a large fastening force is used as the fastening device, and the base end of the wire rope is used. Can be firmly fixed.

According to the second aspect of the present invention, the base end of the wire rope is bent and hooked on the concave portion, so that the fastening force of the fastener can be further enhanced.

According to the third aspect of the present invention, the fastener comprises a pair of holding plates and a plurality of bolts, so that the structure is simple and the production cost is low. Also, since the side edges of both holding plates are integrally connected by a plurality of bolts arranged symmetrically with the base end of the wire rope interposed therebetween,
The base end of the wire rope can be securely clamped from both sides and firmly fixed to the inner peripheral surface or the end plate of the drum main body.

According to the fourth aspect of the present invention, it is possible to provide a stacker crane equipped with a winding drum for raising and lowering a carriage, which is small and has a strong fastening force of a wire rope.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a wire rope winding device of a stacker crane according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a cross-sectional view of the main part.

FIG. 4 is a view taken in the direction of arrows AA in FIG. 3;

FIG. 5 is a view as viewed in the direction of arrows BB in FIG. 4;

FIG. 6 is a perspective view showing a wire rope winding device of a stacker crane according to another embodiment of the present invention.

FIG. 7 is a plan view of the same.

FIG. 8 is a cross-sectional view of the main part.

9 is a view as viewed in the direction of arrows CC in FIG. 8;

FIG. 10 is a view taken in the direction of arrows DD in FIG. 8;

FIG. 11 is a side view of the stacker crane.

FIG. 12 is a perspective view showing a conventional wire rope winding device.

FIG. 13 is an enlarged vertical sectional view of the main part.

[Explanation of symbols]

 6 Winding Drum 6a Drum Body 6b End Plate 7,8 Wire Rope 7a, 8a Base End of Wire Rope 12 Support 19 Depression 20 Fastener 20a Clamping Plate 20b Clamping Plate 20c Bolt

Claims (4)

[Claims] 1. A winding drum having a cylindrical drum main body and an end plate formed on an inner peripheral surface of the drum main body and fitted to a spindle, wherein a wire is provided on an outer peripheral surface of the drum main body. In a wire rope winding device in which a rope is wound and the winding rope is wound forward and backward by rotating the winding drum forward and backward, a concave portion is formed at an end edge of the drum main body. Wherein the base end of the wire rope drawn into the drum body through the recess is fastened to the inner peripheral surface of the drum body or the end plate by a fastening tool. apparatus. 2. The device according to claim 1, wherein the fastener is disposed inside the recess in the drum body, and the base of the wire rope is bent inward with the recess serving as a fulcrum. Item 2. The wire rope winding device according to Item 1. 3. The fastening device according to claim 1, wherein the fastener comprises a pair of holding plates for holding a base end of the wire rope, and side edges of the holding plates arranged symmetrically with the wire rope interposed therebetween. 3. The wire rope winding device according to claim 2, further comprising: a plurality of bolts for integrally connecting the holding plates and fixing the both holding plates to the inner peripheral surface of the drum main body or the end plate portion. 4. The wire rope winding device according to claim 1, wherein the winding drum is a winding drum for raising and lowering a carriage of a stacker crane.