JP2001122405A - Hoist gear of stacker crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problems that a drum groove for a conveying machine wire rope and a drum groove for a counterweight wire rope are required, a length of winding drum is made larger and an accommodation space is made larger. SOLUTION: This hoist gear of stacker crane is provided with an ascending/ descending conveying machine ascending/descending along a support; a counterweight for reducing a load of ascending/descending conveying machine; a winding drum 8 for winding a wire rope of which one end is attached to the ascending/descending conveying machine or a counterweight; and a motor 9 for driving the winding drum 8. The wire rope 6 attached to the ascending/ descending conveying machine and the wire rope 6a attached to the counterweight 4 are wound on the same groove of a drum groove 11 of the winding drum 8 from an opposite direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting device for a stacker crane, which is provided with an elevator and a counterweight interlocked with each other via a winding drum to reduce the load on a motor.

[0002]

2. Description of the Related Art Conventionally, in a stacker crane using a counterweight, various attempts have been made to reduce the size of a hoisting apparatus. One example is disclosed in JP-A-9-165106. As described above, there is known a stacker crane in which the number of guide sheaves for raising and lowering a lifting / lowering machine is reduced and a connecting structure of a lifting wire rope is simplified.

The conventional stacker crane will be described below with reference to FIGS. In the drawing, reference numeral 1 denotes a lower frame of a stacker crane, 2 denotes a column erected on the lower frame, 3 denotes an upper frame laid laterally on an upper end of the column 2, 4 denotes a counterweight, 5 denotes a lifting machine, 7a, 7
b, 7c, 7d, 7e are guide sheaves, 9 is a motor, 1
2 is a rope terminal fixing device, 14 is a take-up drum, 15 is a wire rope on the carrier side, 15a is a wire rope on the counterweight side, 16 is a wire rope drum groove for a lifting machine, 16
a is a wire rope drum groove for the counterweight.

[0004] As shown in the figure, a stacker crane is installed on a lower frame 1 and has a support column 2 having a guide rail (not shown) for guiding the vertical movement of an elevator 5.
And guide sheaves 7a, 7
b, 7c, 7d and 7e are provided with upper frames arranged at predetermined intervals. The ends of the wire ropes hung on the guide sheaves 7a, 7b are engaged with the lifting / lowering machine 5, and the ends of the wire ropes 15a hung on the guide sheaves 7c, 7d are connected to the counterweight 4 via the winding drum 14. I am motivated. The wire rope 15 is a guide sheave 7a, 7b
Is wound on the winding drum 14 through the winding drum 1
4 is driven by a motor 9.

[0005]

In the above-mentioned conventional stacker crane, as shown in FIG. 4, the winding drum 14 is provided with a drum groove 16 for a wire rope 15 for an elevator.
Besides, wire rope drum groove 16 for counterweight
a, the length of the take-up drum 14 is increased, and the space before and after the stacker crane and in the width direction is increased. As a result, there is a problem that the dead space of the baggage increases and the storage space decreases. I was

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention solves the above-mentioned problems. In a hoisting device of a stacker crane equipped with a winding drum for winding a wire rope and a motor for driving the winding drum so that the elevator and the counterweight are interlocked, Winding the wire rope attached to the counterweight and the wire rope attached to the counterweight from the opposite direction in the same groove of the winding drum, and winding the other wire rope in the drum groove where one wire rope is unwound. It is characterized by the following.

According to the present invention, since the elevator and the counterweight are linked via the winding drum of the elevator, the load on the elevator can be reduced by the counterweight, and the load on the motor can be reduced. Then, the wire rope attached to the lifting machine and the counterweight is wound around the same groove of the winding drum from the opposite direction, and when one wire rope is unwound, the other wire rope is wound around the unwound groove. Since the drum groove is used as a groove for both the wire rope for the elevator and the wire rope for the counterweight, the length of the winding drum can be greatly reduced as compared with the conventional apparatus.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a lifting machine that moves up and down along a column, a counterweight that reduces the load of the lifting machine, and a lifting machine or a counterweight that has one end. In a hoisting device of a stacker crane equipped with a winding drum for winding a wire rope and a motor for driving the winding drum so that the elevator and the counterweight are interlocked, The wire rope attached and the wire rope attached to the counter weight are wound around the same groove of the winding drum from the opposite direction, and the one wire rope is wound around the unwound drum groove.
According to the present invention, since the other wire rope is wound up, according to the present invention, the lifter and the counterweight are configured to be linked via the winding drum of the lifter, so that when the lifter is lifted, Means that the counterweight is lowered, the load on the elevator is reduced by the counterweight, the load on the motor is reduced, and the wire rope attached to the elevator and the counterweight is inserted into the same groove of the winding drum from the opposite direction. When one of the wire ropes is unwound, the other wire rope is wound around the unwound groove, and the drum groove is used as a combined groove for the wire rope for the lift and the wire for the counterweight. As a result, the length of the take-up drum can be greatly reduced compared to the conventional equipment, and the capacity of the motor can be reduced without reducing the storage efficiency of the stacker crane. It has an action that can be reduced.

An embodiment of the present invention will be described below with reference to the drawings.

[0010]

FIG. 1 is a side view showing a stacker crane according to the present invention, and FIG. 2 is an enlarged front view showing a winding drum.

In the drawing, reference numeral 1 denotes a lower frame of a stacker crane, 2 denotes a column erected on the lower frame, 3 denotes an upper frame laid horizontally on an upper end of the column 2, 4 denotes a counterweight, 5 denotes a lifting machine, 6 is a wire rope on the transporter side, 6a
Is the counterweight side wire rope, 7a, 7b, 7
c, 7d, 7e are guide sheaves, 8 is a winding drum, 8
a is a drum shaft, 9 is a motor, 9a is a speed reducer, 10 is a support bracket, 11 is a drum groove, and 12 is a rope terminal fixing device.

The stacker crane has a frame body composed of a lower frame 1, a support 2, and an upper frame 3,
Suspended by a lifting / lowering device including a winding drum 8, a motor 9, and a reduction gear 9a fixed to a support bracket 10 fixed to the column 2, and a wire rope 6 wound around the winding drum 8 between the columns 2. The lift 5 is provided with a counterweight 4 for reducing the driving torque acting on the winding drum 8. A wire rope 6 a fixed to the counterweight 4 is fixed to the lift 5. The wire rope 6 is wound from the opposite direction to the drum groove 11 of the winding drum around which the wire rope 6 is wound.

More specifically, in the present embodiment, as shown in FIG. 2, a wire rope 6 attached to the lifting and lowering machine 5 and a wire rope 6a attached to the counterweight 4 are wound on a winding drum. 8 are wound around the same drum groove 11 from opposite directions, and when one wire rope is unwound, the other wire rope is wound around the unwound drum groove 11.

The wire rope 6 wound around the winding drum 8 is engaged with the lifting and lowering machine 5 via guide sheaves 7b, 7c and 7e. Also, wire rope 6a
Is attached to the counterweight 4 via the guide sheaves 7a and 7d. Note that the other ends of the wire ropes 6 and 6 a are locked to the winding drum 8 by the fixture 12.

Next, the operation of the embodiment of the present invention will be described. First, when the motor 9 is driven, the speed reducer 9
The take-up drum 8 rotates via a drum shaft 8a connected to a. When the winding drum 8 rotates in the direction of winding the wire rope 6, the wire rope 6a is unwound, the wire rope 6 is wound into the drum groove 11 where the wire rope 6a is unwound, and the counterweight 4 is lowered. , The elevator 5 rises.

When the winding drum 8 rotates in the opposite direction, the wire rope 6 is unwound by the same action as described above, and the wire rope 6a is wound in the drum groove where the wire rope 6 is unwound. As a result, the lift 5
Falls and the counterweight 4 rises.

According to the present invention, the elevator 5 and the counterweight 4 are provided so as to be interlocked via the winding drum 8 of the elevator, so that when the elevator 5 is lifted, the counterweight is lifted. 4 is lowered, the load of the lifting and lowering machine 5 is reduced by the counterweight 4, and the load on the motor is reduced. Further, the wire ropes 6 and 6a, which are engaged with the lifting / lowering machine 5 and the counterweight 4, are wound around the same groove of the winding drum 8 from the opposite direction. Since the other wire rope is configured to be wound, it is not necessary to provide a drum groove for winding the wire rope fixed to the counterweight 4 as in the conventional mounting, and the drum length of the winding drum 8 is reduced. Can be greatly reduced as compared with the conventional apparatus, and the capacity of the motor can be reduced without reducing the storage efficiency of the stacker crane.

[0018]

According to the present invention, the lifting machine and the counterweight are provided so as to be interlocked via the winding drum of the lifting device, so that the load on the lifting machine is reduced by the counterweight and the load on the motor is reduced. In addition, a wire rope attached to the lifting machine and the counterweight is wound around the same groove of the winding drum from the opposite direction, and when one wire rope is unwound, the other wire is wound into the unwound groove. Since the rope is configured to be wound, the winding drum can be reduced in size, and a stacker crane that can reduce the motor capacity without reducing the storage efficiency of the stacker crane can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a stacker crane of the present invention.

FIG. 2 is an enlarged front view showing the winding drum of the present invention.

FIG. 3 is a schematic front view showing a conventional stacker crane.

FIG. 4 is a front view showing a conventional winding drum.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower frame 2 Prop 3 Upper frame 4 Counterweight 5 Lifting machine 6 Wire rope (carrier side) 6a Wire rope (counterweight side) 7a, 7b, 7c, 7d, 7e Guide sheave 8 Winding drum 8a Drum shaft 9 Motor 9a Reducer 10 Support bracket 11 Drum groove 12 Rope terminal fixture

Claims (1)

[Claims] 1. A lifting machine that moves up and down along a column, a counterweight that reduces the load of the lifting machine, and one end is engaged with the lifting machine or the counterweight, and the lifting machine and the counterweight work together. In a hoisting device of a stacker crane provided with a winding drum for winding a wire rope and a motor for driving the winding drum, a wire rope engaged with an elevator and a wire rope engaged with a counterweight are provided. And winding the other wire rope around the drum groove where one wire rope is unwound, and winding the other wire rope around the same groove of the drum groove of the winding drum.