JPH0447133Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention rotatably supports a large number of endlessly connected shelves on a horizontal circulation path, and connects the shelves to each other at the bottom. The present invention relates to a drive device for a rotary shelf in which a connecting drive chain is driven by a drive gear wheel supported on a U-turn portion at one end of the horizontal circulation path.

(Prior art and its problems) In this type of conventional rotary shelf, the driving gear is independently supported on the frame, and the motor supported by the frame is placed at a position away from the driving gear. The output shaft and the drive gear were interlocked and connected to each other by a chain transmission means.

Such a conventional drive device requires a chain tension adjustment mechanism in the chain transmission means, which increases the number of parts as a whole, leading to an increase in cost. Moreover, it is necessary to operate the tension adjustment mechanism in a timely manner to maintain the chain tension in a good condition, resulting in a drawback that maintenance and inspection are troublesome.

In order to solve this problem, the drive gear can be configured to be directly driven by the output shaft of a motor with a reduction gear, but the motor with a reduction gear used in this case is large and heavy. Become a thing.
Moreover, since this motor with a reduction gear must be supported above the center of the drive gear, a bracket is extended in a cantilevered manner from the frame located inside the drive gear, and the motor is supported by the bracket. However, the most natural way to support this bracket is to use an upper guide rail support column located right next to the motor.

However, if the motor with a speed reducer is supported by the support via the bracket, a large bending force acts on the support, leading to tilting of the motor. Therefore, it becomes necessary to sufficiently reinforce the pillars, and the conventional pillars cannot be used as they are, which also leads to an increase in costs.

(Means for Solving the Problems) The present invention proposes a drive device capable of solving the conventional problems as described above. Both front and rear ends of a longitudinally long mounting base of a motor support bracket are mounted on a frame that connects the front and rear linear path portions to each other at a position near the one end U-turn portion, and the bracket extends over the drive gear. A motor with a speed reducer, whose output shaft is directly engaged with the drive gear, is attached to the free end of the bracket, and left and right rails are mounted on the frame on both left and right sides of the bracket to support guide rails that guide the upper part of the shelf. It is located at the point where a pair of pillars were erected.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 and 2, 1 is a single shelf, and its horizontal circulation path is composed of a lower guide rail 2 and an upper guide rail 3. They are connected and integrated with each other by a pair of left and right columns 4, respectively. At both U-turn portions of the horizontal circulation path, a drive gear 5 and an idler gear 6 are installed directly above the lower guide rail 2.
is supported. Although the free rotating gear 6 is not shown in the drawings, its position can be adjusted in the length direction of the horizontal circulation path by a drive chain take-up position adjusting means.

As shown in FIGS. 3 to 6, each shelf 1
The bottom inside positions are connected endlessly at regular intervals by drive chains 7, and the top inside positions are connected endlessly at regular intervals by connecting links 8. The drive chain 7 is suspended between the drive gear 5 and the free rotation gear 6. Furthermore, two grooved swivel wheels 9a are provided on the inner side of the bottom of each shelf unit 1.
9b is attached, and two guide rollers 10a and 10b are pivotally supported on the inner side of the upper end of each shelf unit 1 in a state concentric with the pivot shaft of the connecting link 8. The grooved free wheels 9a and 9b fit into the round bar-shaped lower guide rail 2, and the guide rollers 10
a, 10b are the downward grooves 3 of the upper guide rail 3
It fits loosely inside a.

In addition, the U-turn portions at both ends of the upper guide rail 3 are
It is composed of an angle member 11 that curves in an arc shape and a reinforcing strip plate 12 that curves in an arc shape inside the angle member 11,
The guide rollers 10a and 10b roll against the inner vertical surface of the angle member 11.

The drive gear 5 is directly attached to the output shaft 13a of the motor 13 with a reduction gear. The motor 13 is supported in a cantilevered manner via a motor support bracket 15 by frames 14a and 14b that connect the front and rear linear path portions 2a and 2b of the lower guide rail 2 at a position near the U-turn portion 2c. .

That is, the motor support bracket 15 is
The attachment base 15a, which is long in the front and rear horizontal directions, is attached to the frames 14a, 14b at both front and rear ends thereof, and extends in a cantilever shape above the drive gear 5, and has the free end portion attached to the speed reducer. A mechanical motor 13 is mounted vertically. Further, a pair of left and right pillars 4 are erected on the frame 14a on both the left and right sides of the motor support bracket 15.

Each shelf unit 1 has two grooved free wheels 9a, 9.
b, and two guide rollers 10a, 10b are supported by the lower guide rail 2 through the upper guide rail 3, and the two guide rollers 10a and 10b prevent the upper guide rail 3 from falling outward and downward due to gravity. 11, and is held in a vertical position. When the drive chain 7 is rotated by operating the motor 13 and directly driving the drive gear 5 in such a state, each of the individual shelves 1 connected in an endless manner by the drive chain 7 moves to both the upper and lower guide rails 2. , 3 as it rotates on the horizontal circulation path.

The method of using the rotating shelf provided with a large number of individual shelves 1 that can be rotated on a horizontal circulation path is the same as that of a conventional rotating shelf of this type, so a description thereof will be omitted.

(Operations and Effects of the Invention) As described above, the rotating shelf drive device of the present invention directly drives the drive gear by a motor with a reduction gear, and a chain is interposed in the drive system of the drive gear. Since no mechanism is installed, there is no need for a mechanism for adjusting the chain tension or its operation, the number of parts is greatly reduced, costs can be reduced, and maintenance and inspection can be easily performed. Also, accuracy is improved.

Moreover, according to the present invention, the motor with a speed reducer, which is large and heavy, is supported via a bracket on a frame installed between the lower guide rails, instead of being supported on a column that supports the upper guide rail. Therefore, the upper guide rail supporting column does not need to be specially reinforced, and a conventional thin column can be used as is.

Further, since the bracket is arranged between the pair of left and right columns, it is possible to have a long mounting base in the horizontal direction without being affected by the columns at all, and this long mounting base in the front and rear horizontal direction Since both front and rear ends of the bracket are attached to the frame, the cantilever-extending bracket can be stably supported, completely eliminating problems in terms of strength.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view of the entire rotating shelf, Fig. 2 is a schematic front view thereof, Fig. 3 is a cross-sectional plan view showing the drive device section, Fig. 4 is a plan view showing the U-turn portion of the upper guide rail, FIG. 5 is a longitudinal sectional side view showing the driving device portion, and FIG. 6 is a partially longitudinal sectional back view showing the vertical guide portion of the shelf alone. 1... Single shelf, 2... Lower guide rail, 3...
...Upper guide rail, 4... Support frame, 5...
... Drive gear wheel, 6... Idle gear wheel, 7... Drive chain, 8... Connection link, 9a, 9b... Grooved free wheel, 10a, 10b... Guide roller, 1
3...Motor with reducer, 14a, 14b...
Frame, 15...motor support bracket,
15a... Mounting base.

Claims (1)

[Scope of utility model registration request] A large number of endlessly connected shelves are rotatably supported on a horizontal circulation path, and a drive chain that connects the shelves to each other at the bottom is supported by a U-turn portion at one end of the horizontal circulation path. In a rotary shelf driven by drive gears, a motor supporting bracket is mounted on a frame that connects the front and rear straight path sections of the guide rail that guides the lower part of the single shelf to each other at a position near the U-turn section at one end. Attach both the front and rear ends of the horizontally long mounting base of the
A motor with a reduction gear whose output shaft is directly connected to the drive gear is attached to the free end of the bracket extending above the drive gear, and a motor with a reduction gear is mounted on the frame on both left and right sides of the bracket. A rotating shelf drive device consisting of a pair of left and right columns that support a guide rail that guides the upper part.