JP2776061B2 - Horizontal rotating shelf - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a plurality of load supports movably supported along a horizontal circulating path by a pair of upper and lower endless drive chains stretched along the horizontal circulating path. It relates to a connected horizontal rotating shelf.

[0002]

2. Description of the Related Art A horizontal rotary shelf of a type in which each load supporting table is driven by one endless drive chain is disclosed in, for example, Japanese Utility Model Laid-Open Publication No.
As disclosed in JP-A-32811, a drive system in which a drive tooth wheel is directly connected to a motor with a speed reducer is known. As described above, each load support is driven by a pair of upper and lower endless drive chains. In this type of horizontal rotary shelf, the upper and lower endless drive chains must be driven by a pair of upper and lower drive teeth arranged in one U-turn portion of the horizontal circulation path. As disclosed in Japanese Unexamined Patent Publication, a drive tooth wheel attached to the upper and lower ends of a vertical drive rotary shaft supported on one U-turn portion of a horizontal circulation path, and supported on the other U-turn portion. The pair of upper and lower endless drive chains are hung between idler wheels attached to upper and lower ends of a vertical rotating shaft, and the drive rotating shaft is transmitted to the output shaft of a motor with a speed reducer. Linked by means interlocked That the drive system has been adopted.

[0003]

In the conventional configuration as described above, that is, in a configuration in which the upper and lower endless drive chains are driven by a pair of upper and lower drive tooth wheels, the distance between the upper and lower endless drive chains is substantially equal to the distance between the upper and lower endless drive chains. A drive rotary shaft of the same length, a chain drive means for interlocking the drive rotary shaft and the motor with a reducer, and a take-up mechanism of the chain drive means are required. And cost.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal rotary shelf which can solve the above-mentioned conventional problems. A number of load supports 2 movably supported along the horizontal circulation path 1 are provided with a pair of upper and lower endless drive chains 5, which are stretched along the horizontal circulation path 1. 6, the endless drive chain 6 on the lower side is connected to a motor 1 with a speed reducer.
A drive tooth wheel 10 directly connected to the third vertical output shaft 13a;
The upper endless drive chain 5 is hung between the first driven tooth wheel 11 attached to the lower end of the vertical transmission rotary shaft 14, and attached to the upper end of the transmission rotary shaft 14. Between the second driven tooth wheel 9 and the third driven tooth wheel 8 supported independently and concentrically with the driving tooth wheel 10,
The frame 7 includes a drive-side frame 16 that supports the motor 13 with the reducer and supports the third driven tooth wheel 8 and a take-up-side frame 17 that supports the transmission rotary shaft 14. The lower connecting means 19 corresponding to the drive chain 6 and the upper connecting means 18 corresponding to the upper endless drive chain 5 are connected and assembled. The upper and lower connecting means 18 and 19 are connected to the upper and lower endless drive chains. Chen 5,
6 is provided with adjusting mechanisms 18a, 18b, 19a, and 19b capable of adjusting the connection position in the direction of tensioning and relaxing.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes a horizontal circulation path of a load support 2; Along the lower endless guide rail 3 for support using round pipe material
And an upper endless guide rail 4 for steadying use of a channel member. Further, a pair of upper and lower endless drive chains 5 and 6 are extended along the horizontal circulation path 1.

The two guide rails 3 and 4 are attached to a frame 7 located inside the horizontal circulation path 1, and the lower endless drive chain 6 has a motor 13 equipped with a speed reducer that projects vertically downward. The upper endless drive chain 5, which is hung between the drive tooth wheel 10 directly connected to the shaft 13a and the first driven tooth wheel 11 attached to the lower end of the vertical transmission rotary shaft 14, The second driven tooth wheel 9 attached to the upper end side of the transmission rotating shaft 14 and the third driven tooth wheel 8 supported independently and concentrically with the driving tooth wheel 10 I have.

The frame 7 supports a motor 13 with a speed reducer via a bracket 12 and supports a third driven tooth wheel 8 via a vertical rotation shaft 15; A take-up side frame 17 supporting the shaft 14 is connected and assembled by lower connecting means 19 corresponding to the lower endless drive chain 6 and upper connecting means 18 corresponding to the upper endless drive chain 5. The guide rails 3 and 4 are also connected to the drive side frame 1.
6 is divided into a portion fixed to the take-up side frame 17 and a portion fixed to the take-up side frame 17, and when both frames 16, 17 are connected and integrated, the guide rails 3 and 4 are formed endlessly.

As shown in FIG. 3, each of the load supports 2 has an L-shaped structure comprising a vertical wall portion 20 and a bogie support portion 21 which is provided in a cantilever manner in a forward direction from the lower end of the vertical wall portion 20. At the upper end of the vertical wall portion 20, a pair of right and left vertical shaft rollers 22 for anti-sway fitting into the endless guide rails 4 for anti-sway are pivotally supported and an upper endless drive chain 5. At the lower end of the vertical wall portion 20, a pair of left and right supporting horizontal shaft flanged wheels 23 fitted on the supporting endless guide rails 3 is supported and the lower endless drive chain 6 is supported. Has been fixed.

The lower connecting means 19 for connecting the drive-side frame 16 and the take-up side frame 17 is shown in FIGS.
As shown in FIG. 6, vertical connecting plates 24a, 24b and 25 are fixedly protruded so as to be opposed to the lower connecting beam members 16a and 17a adjacent to each other of the frames 16 and 17 respectively.
a, 25b, connecting bolts 26a, 26b attached to one connecting plate 24a, 24b and penetrating the other connecting plate 25a, 25b, and locks for fixing the connecting bolts 26a, 26b to the other connecting plates 25a, 25b. It has two sets of connecting position adjusting mechanisms 19a, 19b composed of nuts 27a, 27b, and both ends 3a, 3b of the endless guide rail 3 for support fixed to the drive side frame 16.
Of one end 3a and the take-up side frame 17
Ends 3c of the endless guide rail 3 for support fixed to the
Of the 3d, a centering connection that is fitted to the mating guide rail ends 3c and 3b when the frames 16 and 17 are connected, respectively, to the end 3d that is not opposed to the end 3a. The shafts 28 and 29 are protruded concentrically.

At the ends 3a to 3d of the endless guide rail 3 for support, mounting seats 30a and 30b projecting to both right and left sides are fixedly protruded. Guides are provided on these mounting seats 30a and 30b. A pair of left and right wheel guide bars are provided so as to sandwich the guide rail ends 3a, 3c and 3b, 3d from both right and left sides, respectively, provided with a long hole 31 parallel to the length direction of the rail 3. 32
a, 32b penetrate the slot 31 upward and are screwed into screw holes 33 formed at both ends of the wheel guide bars 32a, 32b by bolts 34 between the mounting seats 30a and between the mounting seats 30b. The bridge is fixed.

The upper connecting means 18 for connecting the driving side frame 16 and the take-up side frame 17 is provided with
As shown in FIG. 9, among the upper connection beam members 16b, 17b adjacent to each other on both frames 16, 17, the one is attached to one connection beam member 16b and the other connection beam member 17b is provided.
And two connecting position adjusting mechanisms 18a and 18b, which are composed of connecting bolts 35a and 35b penetrating through the joints and lock nuts 36a and 36b for fixing the connecting bolts 35a and 35b to the other connecting beam member 17b. The ends 4a, 4b of the endless guide rails 4 fixed to the drive-side frame 16 and both ends 4c, 4c of the endless guide rails 4 for anti-sway fixed to the take-up side frame 17.
A rail spacer 37 formed by cutting the same channel material as the guide rail 4 is interposed between the guide rails 4d and 4d, between the adjacent guide rail ends 4a and 4c and between 4b and 4b.
The rail spacer 37 is fixed to the lower side of the center of the connection plate 38 covering over 4d by a bolt nut 39. The connection plate 38 is provided on the connection plate 38 in parallel with the length direction of the guide rail 4. Utilizing the elongated holes 40a, 40b, they are fixed to the ends of the connecting beam members 16b, 17b by bolt nuts 41a, 41b.

In assembling the above-mentioned horizontal rotary shelf,
The drive-side frame 16 and the take-up-side frame 17 are connected and integrated with each other by upper and lower connecting means 18 and 19. At this time, the lock nuts 36 a and 36 b in the connecting position adjusting mechanisms 18 a and 18 b of the upper connecting means 18 are used. Adjustment and connection position adjustment mechanism 19a, 1 of lower connection means 19
By adjusting the lock nuts 27a and 27b in 9b, the upper and lower portions of both frames 16 and 17 are moved toward and away from each other, and the upper and lower pair of tooth wheels 8 and 10 of the drive side frame 16 and the take-up side frame 17 are moved. The distance between the pair of upper and lower tooth wheels 9 and 11 is adjusted separately, so that the upper endless drive chain 5 and the tooth wheel 10 and 11 The tension of the lower endless drive chain 6 being tensioned can be adjusted individually.

When the two frames 16 and 17 are moved toward and away from each other for adjusting the tension of the chain, the centering connection protruding from the ends 3a and 3d of the lower endless guide rail 3 for support. The shafts 28, 29 move in and out of the opposing guide rail ends 3c, 3b. Further, between the opposing ends 3a and 3c of the endless guide rail 3 for support and 3
Wheel guide bar 3 located on both left and right sides between b and 3d
2a, 32b and a mounting seat 30 for supporting both ends thereof.
The fastening with the bolts 34 to the a and 30b is performed after the completion of the above-described chain tension adjustment.

The gap between the butted ends 4a and 4c and the gap between 4b and 4d of the upper endless endless guide rail 4 is changed by the above-mentioned chain tension adjustment. Therefore, after the chain tension is adjusted, a rail spacer 37 having a width corresponding to the gap between the rails is selected from a plurality of types of rail spacer groups prepared in advance at a pitch of, for example, 5 mm, and the rail spacer 37 is connected to the connection plate. 38, the connection plate 38 is connected to the connection beam 16b by bolt nuts 41a, 41b.
The rail spacer 37 is fitted and fixed between the butted ends 4a and 4c and between the ends 4b and 4d of the endless guide rail 4 for steady rest by being attached between the ends of 17b.

In the horizontal rotary shelf assembled as described above, when a specific load support table 2 is called at the truck transfer work place set in the horizontal circulation path 1, the motor 13 with the speed reducer is operated to drive. The tooth wheel 10 is driven to rotate. As a result, the lower endless drive chain 6 rotates, and the rotation of the drive chain 6 is transmitted from the first driven tooth wheel 11 to the transmission rotary shaft 14.
And the upper endless drive chain 5 rotates in the same direction as the lower endless drive chain 6 at the same speed as the lower endless drive chain 6. Therefore, all of the load supporting tables 2 connected to the pair of upper and lower endless drive chains 5 and 6 are held in a fixed posture by the endless guide rails 3 for support and the endless guide rails 4 for steadying. The horizontal circulation path 1 is rotated in a predetermined direction. When the specific load support table 2 is called to the truck transfer work place, a loading cart 42 as shown in FIG. 3 is placed on the call load support table 2 or the load is loaded from the call load support table 2. An operation of lowering the transport push cart 42 is performed.

As described above, the load support table 2 is connected to the horizontal circulation path 1
, The wheels 23 with horizontal flanges for support of each load support base 2 are fitted on the endless guide rails 3 for support and roll, but the drive side frame 16 and the take-up side frame 17 In the gap between the butting ends 3a and 3c and between the gaps 3b and 3d of the guide rail 3 at the connecting portion with the guide rail 3, the large-diameter flanges 23a and 23b on both sides of the wheel 23 as shown in FIG. The wheel 23 rolls on the wheel guide bars 32a, 32b located on both left and right sides, and the wheel 23 instantaneously falls into gaps between the butted ends 3a, 3c and 3b, 3d of the guide rail 3. No shock is applied to the load support 2. In other words, the height of the wheel guide bars 32a, 32b is determined so that the movement level of the wheel 23 does not substantially change when passing through the gap.

The vertical shaft roller 22 for steadying of each load support table 2 is fitted into the endless guide rail 4 for steadying and rolls. Since the gaps between the butting ends 4a and 4c and between the 4b and 4d of the guide rail 4 in the connecting portion are filled with the rail spacer 37, when the roller 22 passes between the butting ends of the rail, There is no possibility that the attitude of the load support 2 fluctuates. In this case, even if the width of the rail spacer 37 and the gap between the rail butting ends 4a and 4c and between the rails 4b and 4d do not completely match, and there is some gap between them, this endless end plate for steadying is used. The vertical shaft roller 22 for steadying which moves while being fitted to the guide rail 4 does not transmit a load to the guide rail 4, so there is no problem at all in practical use.

[0018]

As described above, according to the configuration of the horizontal rotary shelf of the present invention, one end of the horizontal circulation path is provided among a pair of tooth wheels respectively hung the upper and lower endless drive chains. Only the upper and lower tooth wheels (the second driven tooth wheel and the third driven tooth wheel) are linked and connected by a vertical transmission rotating shaft, and the lower endless end of the upper and lower tooth wheels at the other end of the horizontal circulation path The toothed ring (drive toothed wheel) that hangs the toothed drive chain is directly attached to the vertical output shaft of the motor with the speed reducer, and the upper endless drive chain is driven by the driven toothed wheel (No. The driven wheel is driven by applying a rotational force from one driven tooth wheel), so that a conventional rotary shelf that drives each load supporting table along a horizontal circulation path by a pair of upper and lower endless drive chains is used. A horizontal rotating shelf that drives the load support with two endless drive chains As, it is possible to omit the chain transmission means and the take-up mechanism between the axis of the driving toothed ring and the output shaft of the reduction gear with a motor. Therefore, the total number of parts is small, the structure is extremely simple, the assembling is easy, and the cost can be reduced.

On the other hand, according to the configuration of the present invention, the frames handled before assembling are the drive side frame and the take-up side frame which are shortened by being divided into two in the length direction of the horizontal circulation path. Compared to the case of a long integrated frame that extends the entire length of the route, handling such as transportation and storage is easier and the required cost is lower. Moreover, the connecting means between the two frames required by adopting the split type frame is divided into a lower connecting means corresponding to the lower endless drive chain and an upper connecting means corresponding to the upper endless drive chain. Since each connecting means is provided with an adjusting mechanism capable of adjusting the connecting position in the direction of tensioning and relaxing each of the upper and lower endless drive chains, a dedicated take-up mechanism for tension adjustment must be provided in each of the upper and lower endless drive chains. Compared with the case where the tension must be adjusted, the tension of the upper and lower endless drive chains can be individually adjusted, but the overall configuration is simplified, and the cost can be reduced in this respect as well.

[Brief description of the drawings]

FIG. 1 is a plan view showing a supportless endless guide rail of a load support base and a lower endless drive chain.

FIG. 2 is a side view showing a frame structure and a hanging tooth wheel of an endless drive chain.

FIG. 3 is a longitudinal sectional side view of a shelf in a state where a load supporting platform has a load carrying cart mounted thereon.

FIG. 4 is a plan view showing a configuration of a lower connecting means of a driving side frame and a take-up side frame.

FIG. 5 is an exploded plan view of the main part.

FIG. 6 is an enlarged longitudinal sectional side view showing the essential part and a wheel with a horizontal shaft flange for supporting a load support base.

FIG. 7 is a plan view showing a configuration of an upper connecting means of the driving side frame and the take-up side frame.

FIG. 8 is an exploded plan view of the main part.

FIG. 9 is an enlarged vertical sectional side view of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal circulation path 2 Load support 3 Endless guide rail for support 4 Endless guide rail for steady rest 5 Upper endless drive chain 6 Lower endless drive chain 7 Frame 8 Third driven tooth wheel 9 Second driven Tooth wheel 10 Drive tooth wheel 11 First driven tooth wheel 13 Motor with reduction gear 14 Transmission rotating shaft 16 Drive side frame 17 Take-up side frame 18 Upper connecting means 18a Connecting position adjusting mechanism 18b Connecting position adjusting mechanism 19 Lower connecting means 19a Connection position adjustment mechanism 19b Connection position adjustment mechanism

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65G 1/133 A47B 49/00 B65G 21 / 00,21 / 06 B65G 23 / 22,23 / 44

Claims (1)

(57) [Claims] 1. The apparatus is movably supported along a horizontal circulation path.
Many load supports are stretched along the horizontal circulation path.
Connected by a pair of upper and lower endless drive chains
A horizontal rotating shelf, wherein the lower endless drive chain
Is the drive directly connected to the vertical output shaft of the motor with reducer.
Attached to the lower end of the driving gear and the vertical transmission rotating shaft
Between the first driven tooth wheel and the upper endless drive.
The moving chain is attached to the upper end of the transmission rotating shaft.
A second driven toothed wheel, and a shaft independently and concentrically with the drive toothed wheel.
It is hung between the third driven tooth wheel supported, and the frame is
The third driven tooth wheel is supported by the motor with the speed reducer.
The supported drive side frame and the transmission rotary shaft are supported.
Take-up side frame and lower endless drive chain
Corresponds to the corresponding lower connecting means and upper endless drive chain
Assembled by connecting with the upper connecting means
The upper and lower connecting means tension the upper and lower endless drive chains.
Equipped with an adjustment mechanism that can adjust the connection position in the direction of relaxation
Horizontal rotary shelf are.