JPH03293205A - Horizontal rotary type rack - Google Patents

Abstract

PURPOSE:To improve the prevention of noise and the durability of a chain and gears by arranging an upper and lower pair of chain supporting guide rails on link connecting pins supporting the rack simple unit of a driving chain, and providing an auxiliary guide rail on the upper side guide rail side and on the sides of driving and driven gears. CONSTITUTION:Chain retaining guide rails 21a and 22a holding chain rollers 23a and 23b from the upper and lower sides and chain supporting guide rails 21b and 22b are provided on link connecting pins 20a and 20b supporting the rack simple unit 1 of a driving chain 4b. An auxiliary guide rail 47, supporting and guiding a guide roller 43 pivotally supported in a condition where the guide roller 43 is protruded on the lateral outer side of the endless driving chain 4b, is arranged between the end part side of the upper side chain supporting guide rail 21b and the sides of a driving gear 5 and a driven gear 6, This constitution can improve the durability of the chain and the gears at a low noise.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is designed to enable a plurality of individual racks, each of which can load and unload loads in the front-rear direction, to be rotated in a vertical circulation path that is long in the front-rear horizontal direction. The present invention relates to a horizontal rotary rack.

(Prior art and its problems) This type of horizontal rotary rack has a plurality of rack units installed between a pair of left and right endless drive chains, and each rack unit rotates in a long vertical circulation path in the front and rear horizontal directions. However, in the conventional horizontal rotating rack of this type,
A pair of chain support guide rails for supporting and guiding chain rollers supported by chain link pins between the links of the endless drive chain, between the drive gear wheel and the driven gear wheel that hang the endless drive chain. Although it is set up,
When the chain roller, which is receiving the load of the single rack, transfers between the upper chain support guide rail and the gear wheel, a The chain roller will fall down and smooth transfer will not take place. This has caused problems such as noise generation and reduced durability of the chain and gear wheels.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention has the following features:
Of the chain link pins of the endless drive chain, the chain link pin that supports the rack alone supports a guide roller at a lateral outer position of the chain, and a driving tooth wheel and a driven tooth wheel that hang the endless drive chain. A pair of upper and lower chain supporting guide rails is provided between the links of the endless drive chain to support and guide the chain roller supported by the chain link pin, and the end of the upper chain supporting guide rail The present invention proposes a horizontal rotary rack in which an auxiliary guide rail for supporting and guiding the guide roller is disposed between the side and the side of the gear wheel.

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

In FIGS. 1 and 2, each rack (3) is a single rack, which rotates in a vertical posture along a long vertical circulation path 2 in the front-rear horizontal direction. 3a and 3b are a pair of left and right side frames,
They are arranged so as to sandwich the single rack circulation path 2 . Reference numerals 4a and 4b designate a pair of left and right endless drive chains, which include a drive toothed wheel 5 and a driven toothed wheel 6 that are pivotally supported by the both side frames 3a3b.
It is hung between. 7a and 7b are a pair of left and right rack single guide rails, where the rack single guide rail 7a on the side frame 3a side is the rack single guide rail 7b on the side frame 3b side.
They are attached to both side frames 3a and 3b with their positions shifted in the front and rear horizontal directions so as to be shifted horizontally backward.

As shown in FIGS. 1, 3, and 4, left and right horizontal support shafts 16 are fixedly protruding from the left and right sides of each rack unit 1 in a concentric manner. One ends of the support links 17a and 17b are pivotally attached so as to be able to swing back and forth, and both horizontal support shafts 16 are provided with the single rack guide rails 7a at their respective tips.

One arm 19a, 19b each has a guide roller 18 pivotally supported, which is loosely fitted to the arm 7b. Both arms 19a and 19b are fixed to the horizontal support shaft 16 in such a manner that they extend diagonally forward downward and diagonally rearward downward such that the included angle between them is 90 degrees. The support link 17
The other ends of a and 17b are swingably supported by link connecting pins 20a located at every fixed number of links of the endless drive chains 4a and 4b. 21a, 21b and 22a,
22b is an endless drive chain 4a in a pair of upper and lower chain linear path portions between the drive gear wheel 5 and the driven gear wheel 6;
4b chain roller 23a.

A rail support member having a U-shaped cross section and is attached to each side frame 3a, 3b so that the endless drive chains 4a, 4b are loosely fitted therein, and the chain holding guide rail and the chain supporting guide rail sandwich the chain 23b from above and below. It is fixed to the upper and lower inner surfaces of 24a and 24b.

As shown in FIGS. 1, 2 and 5, the both side frames 3a
, 3b have an intermediate shaft 25a concentrically located between the drive gear 5 and the driven gear 6 at a position adjacent to the drive gear 5.
25b are bearings 26a, respectively.

An intermediate joint shaft 27 and the rain intermediate shaft 25 are supported via the rain intermediate shaft 26b and are arranged concentrically between the rain intermediate shafts 25a and 25b.
a, 25b are connected via connecting flanges 28a, 28b fixed to the inner ends of these intermediate shafts 25a, 25b, connecting flanges 29a, 29b fixed to both ends of the intermediate joint shaft 27, and connecting bolts 30. . However, at the front end of one of the side frames 3a, a reduction gear 32 with a drive motor 31 vertically mounted on the side frame leg 9 between the front end of the side frame 3a and the single rack guide rail 7a is installed. is installed internally, and the motor 31 and the intermediate shaft 25a on the side frame 3a side,
The speed reducer 32 and the intermediate shaft 25a are interlocked and connected via gear wheels 33a, 33b and a chain 34 that interlock the speed reducer 32 and the intermediate shaft 25a. Also, as shown in FIG. 6, a drive shaft 35a of the drive gear wheel 5.

35b connects to the side frame 3a through bearings 36a and 36b, respectively.
3b, and these two moving shafts 35a, 35
b and the rain intermediate shafts 25a, 25b are gear wheels 37a, 3
7b and chain 38, and gear wheels 39a, 39b and chain 4
They are interlocked with each other by 0. However, the gear ring 39a on the intermediate shaft 25b side is fixed to the intermediate shaft 25b at an arbitrary phase by the taper lock mechanism 4.
1 to the intermediate shaft 25b.

As shown in FIGS. 3, 4, 9 and 10, among the link connecting pins of the endless drive chains 4a, 4b,
The link connecting pin 20a that supports the rack unit 1 via the support links 17a and 17b is a long pin that extends both left and right, and the support link 17a is attached to one end of the long pin.
, 1.7b are supported, and a rolling bearing 4 is provided at the other end.
A guide roller 43 is supported via 2. or,
Among the inner links of the endless drive chains 4a and 4b, a pair of left and right inner links 44 connected by the link connecting pin 20a are provided with the upper chain holding guide rail 2.
1a and the lower chain supporting guide rail 22b from both left and right sides, protrusions 45a451] are integrally formed. Further, among the chain rollers 23a, 23b supported by the link connecting pins 20a, 20b between the links of the endless drive chains 4a, 4b, the link connecting pin 2
Similarly to the guide roller 43, the chain roller 23a supported by the chain roller 23a is supported by the link connecting pin 20a via a rolling bearing 46, and the other chain roller 23b is
As shown in FIG. 11, the roller is made of synthetic resin and is supported by the link connecting pin 20b without using a rolling bearing.

As shown in FIGS. 1 and 7, of the pair of upper and lower chain holding guide rails 21a and 22a, the lower end of the chain holding guide rail 22a is connected to the drive gear 5 and the driven gear 6. The end of the upper chain holding guide rail 21a is adjacent to the inside of the drive gear 5 and the driven gear 6.
It covers the top of the. Of the pair of upper and lower chain supporting guide rails 21b and 22b, an end of the upper chain supporting guide rule 21b is adjacent to the inner side of the driving gear 5 and the driven gear 6, and the lower chain supporting guide rule 21b is adjacent to the inner side of the driving gear 5 and the driven gear 6. The end of the guide rail 22b extends below the drive gear 5 and the driven gear 6.

However, as shown in FIGS. 7 to 10, taking the drive gear 5 side as an example, the upper chain support guy 1 and rail 2
], between the side of the end of b and the side of the driving gear 5 and the driven gear 6, the guide is pivotally supported so as to protrude laterally to the outside of the endless drive chains 4a, 4b. An auxiliary guide rail 47 for supporting and guiding the roller 43 is attached to the lower inner surface of the rail support member 24a.

The horizontal rotary rack configured as described above transmits the rotational force of the motor 31 to both drive gear wheels 5 via the rain intermediate shafts 25a, 25b, and operates the left and right pair of endless drive chains 4a.
, 4b in the same direction at the same speed,
Each rack unit 1 can be rotated in the rack unit circulation path 2. At this time, each rack unit 1 has a support link 17a that rotates together with the endless drive chains 4a and 4b.
.

17b so as to be able to swing back and forth around a horizontal support shaft 16. Since it is maintained constant by the rack unit guide rails 7a, 7b and the guide roller 18, each rack unit 1 rotates while maintaining a vertical posture as shown. Furthermore, the endless drive chains 4a and 4b rotating between the drive gear 5 and the driven gear 6 are connected to the chain roller 2.
3a and 23b are chain holding guide rails 2], a,
22a and the chain supporting guy I/rails 21b, 22b, the protrusions 45a of the inner link 44 are rotatably movable and positioned at appropriate intervals.

45b moves while sandwiching the upper chain holding guide rail 21a and the lower chain supporting guide rail 22b from both left and right sides, so the movement path between the driving gear 5 and the driven gear 6 is determined. , it does not meander up, down, left or right. Furthermore, the load of the rack unit 1 is supported by the supporting links 17a, 1.
7b and the chain roller 23a received via the link connecting pin 20a is supported via the rolling bearing 46, so it rotates smoothly on the chain supporting guide rails 21b and 22b. And also, endless drive chain 4a
, 4b, most of the chain rollers 23b are made of synthetic resin, and most of the links of the chains 4a, 4b are the protruding portions 45a that come into sliding contact with the chain holding guide rail 21a and the chain supporting guide rail 22b, as described above. , 4
5b, the noise accompanying the rotation of the endless drive chains 4a, 4b is very small.

Therefore, when the chain roller 23a supported by the link connecting pin 20a supporting the support links 17a and 17b transfers from the driving gear 5 or the driven gear 6 to the upper chain supporting guide rail 21b, or vice versa, When moving from the chain support guide rail 21b onto the drive gear 5 or the driven gear 6, the guide roller 43 coaxial with the chain roller 23a rotates on the auxiliary guide rail 47, so the support link 17a, 1
The load acting on the link connecting pin 20a via 7b is
Auxiliary guide rail 47 via the guide roller 43
Between the upper end position of the driving gear 5 or the driven gear 6 and the chain supporting guide rail 21b, the chain roller 23a is in a state 1 floating above the gears 5 and 6. It moves linearly on the extension line of the support guide rail 21b.

By rotating each rack unit l in the rack unit circulation path 2 as described above, any rack unit l can be rotated.
the front end of the single rack circulation path 2, i.e., FIGS. 1 and 2.
By calling the home position HP shown in the figure, it is possible to carry out loading and unloading operations for the rack unit 1 that is stopped at the home position HP.

(Operations and Effects of the Invention) As described above, according to the horizontal rotary rack of the present invention, among the link connecting pins of the endless drive chain, the chain roller supported by the link connecting pin that supports the rack alone has the drive teeth. When transferring from a wheel or driven gear to the upper chain supporting guide rail, or vice versa, when transferring from a chain supporting guide rail to a driving gear or driven gear, connect the link connecting pin that is common to the chain roller. A supported guide roller is disposed between the side of the end of the chain supporting guide rail and the side of the gear wheel.2 The supported guide roller rotates on the auxiliary guide rail.
Therefore, the load acting on the link connecting fin that supports the single rack is received by the auxiliary guide rail via the guide roller, and the load acting on the link connecting fin supporting the single rack is stopped by the auxiliary guide rail, and the upper end position of the driving gear or driven gear and the chain supporting guide Between the rails,
The chain roller moves linearly on the extension line of the chain supporting guide rail in a state where it is lifted off the gear wheel.

In other words, just before the chain roller supported by the link connecting pin that supports the rack itself moves onto the chain supporting guide rail, it moves diagonally downward with the rotation of the tooth wheel and supports the chain. This prevents the chain roller from colliding with the end of the chain support guide rail or falling onto the gear wheel from the chain support guide rail, and prevents the chain roller from transferring between the gear wheel and the chain support guide rail. It is done smoothly.

Therefore, the generation of noise accompanying the rotation of the endless drive chain is suppressed, and the service life of the endless drive chain and the gears is extended.

[Brief explanation of the drawing]

Figure 1 is a schematic longitudinal side view showing the support structure for a single rack, Figure 2 is a schematic cross-sectional plan view showing the drive system of a pair of left and right endless drive chains, and Figure 3 is a schematic cross-sectional view showing the drive system for a pair of left and right endless drive chains. FIG. 4 is a side view of the same, FIG. 5 is a longitudinal rear view of the intermediate shaft portion of the drive system, FIG. 6 is a longitudinal rear view of the drive gear wheel, and FIG. 7 is the drive gear wheel. FIG. 8 is a side view showing the chain guide rail in the drive gear wheel section, FIG. 9 is a cross-sectional plan view of the same,
FIG. 10 is a vertical cross-sectional view showing a chain roller for supporting a single rack at the drive gear wheel portion, and FIG. 11 is a vertical cross-sectional view showing another chain roller and a chain guide rail. ■...Single rack, 2...Single rack circulation route, 3
a, 3b... Side frame, 4a, 4b... Endless drive chain, 5... Drive gear wheel, 6... Driven gear wheel, 7a, 7b...
...Rack single guide rail, 16...Horizontal support shaft fixed to rack single body, 17a, 17b...Support link, 18
...Guide roller, 19a,], 9b...Arm fixed to horizontal support shaft 16, 20a, 20b...Link connecting pin, 21a,, 22a...Guide rail for holding chain, 21. b, 22b... Chain support guide rail, 23a, 23b... Chain roller, 25a,
, 25b... intermediate shaft, 27... intermediate joint shaft, 31...
...Motor, 32...Reducer, 42.46...Rolling bearing, 43...Guide roller, 44...Inner extension 1 link, 45a. 451]...Protrusion, 47...Auxiliary guide rail.

Claims (1)

[Claims] In a horizontal rotary rack in which a plurality of rack units are installed between a pair of left and right endless drive chains, and each rack unit is configured to rotate in a long vertical circulation path in the front and rear horizontal direction, the link of the endless drive chain Among the connecting pins, a link connecting pin that supports the single rack unit supports a guide roller at a lateral outer position of the chain, and between a driving gear wheel and a driven gear wheel that hangs the endless drive chain, A pair of upper and lower chain supporting guide rails are provided between the links of the endless drive chain to support and guide a chain roller supported by a link connecting pin, and the end side of the upper chain supporting guide rail and the tooth ring are disposed between the links of the endless drive chain. A horizontal rotary rack comprising an auxiliary guide rail for supporting and guiding the guide roller, which is disposed between the sides of the rack.