JPH02204204A - Rotary rack - Google Patents

Abstract

PURPOSE:To improve wear life of a tray outer wheel by making a load resisting level of the outer wheel higher than that of an inner wheel in a rotary rack for lightweight articles such as buckets. CONSTITUTION:The width b2 of an outer wheel 4b is made greater than the width b1 of an inner wheel 4a in order to establish a load resisting level W2 for the outer wheel 4b which is higher than a load resisting level W1 of the inner wheel 4a. This arrangement helps to reduce the difference in life between tray inner and outer wheels otherwise caused by running at high speed, thus resulting in improved reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to a plurality of horizontal trays for storing Ut products such as bacate, and i1! This relates to a rotating shelf that circulates the ship.

[Conventional technology]

2. Description of the Related Art Carousel racks for storing packets and the like are known, in which a plurality of trays are circulated in a horizontal direction. This rotating shelf has two sprockets placed horizontally apart, a drive device that rotates one of the sprockets, a towing chain that is hung endlessly around the two sprockets, and a bucket, etc. , a plurality of trays fixed to a traction chain, a rotating section that supports each of the inner and outer ends of the trays via two wheels, and a straight inner rail, an outer rail, etc.

As shown in 2, rotating shelves are disclosed in Japanese Utility Model Publication No. 59-28962, Japanese Patent Application Publication No. 59-102717, and Japanese Patent Publication No. 62-2932.
It is shown in Publication No. 1@ and Utility Model Publication No. 12088/1988.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology is designed to reduce running wear caused by skidding of two or more inner and outer wheels of the same diameter that support a tray running in a straight line at 30 m/m (n or more) and turning at 19.2 rpm. No consideration has been given to the life of the wheels due to unbalanced loads, and the diameter d2 of the outer wheel and the diameter d1 of the inner wheel increase due to running wear at the swivel. It turned out that it was going to happen.

This will be explained with reference to FIG. Figure 3111 shows the inner wheels 4a (IIt turning radius R) of the tray 7 in the turning section.
1, wheel diameter die wheel wheel width etc. 1 and outer wheel 4b
(Turning radius R2e Wheel diameter d2. Wheel width bz, etc.) Traveling speed 'lz v2p Side slip angle θ1. θ2 is shown.

When the sprocket l is driven to rotate, the tray 7 moves from a straight part with an infinite turning radius to a turning part with a simple turning radius,
The inner wheel 41 decelerates and travels steadily while performing a large skidding motion of θ1, and conversely, the outer wheel 4b accelerates while performing a small skidding motion of 0□.

That is, the inner wheel 4a and the outer wheel 4b of the tray 7
Load capacity w1. Wz is determined from the formula Ill, +21.

However, k: Load constant Fjlp B2: Tensile strength b+ of inner wheel and outer wheel
+ bz: Width of inner wheel and outer wheel d, d2
: Diameters of the inner and outer wheels iI, δ2 : Deflection of the inner and outer wheels tIt <2 : Outer ring thickness of the inner and outer wheels Wheels 4 m and 4b have flexible outer rings made of plastic, rubber, etc. on the outer surface. have The bait records δl and δ2゜'1g '2 relate to this outer ring.

Also, the sideslip speed PL+ of the inner wheel 41 and the outer wheel 4b
P2 is the formula +31. It can be found from +41.

Pl"vl'sinθ1:R11ω-cfnθ1"
“Song”/Song (3) Pz = v2°sinθ2=R2
-ω°sinθz = -14) Therefore, since Pz > Ps for the inner and outer wheels in the turning section, in order to reduce the wheel wear residue caused by running, the load capacity W2/W1 of both should be set to P2/W1. It is necessary to make it proportional to P 1 .

The object of the present invention is to extend the life of wear on the outer wheels of the tray, which occurs due to high-speed travel on the rotating section, and to improve reliability.

[Means for solving the g-point]

The above purpose is to increase the load capacity W2 of the outer wheels provided at the outer end of the tray to the load capacity W1 of the inner wheels provided at the inner end.
This is achieved by making it larger (Wz>Wl).

[For production]

In the running motion of the straight section, the running life of the inner and outer wheels of the tray is the same, and.

Also in the running operation of the rotating section, the load capacity is set in proportion to the skidding speed of the inner and outer wheels of the tray, so the running life of both wheels is approximately equal. With that,
Since the difference in running wear between the wheels attached to the inner and outer ends of the tray is smaller than that of wheels with the same load capacity, the wear life is averaged and reliability can be improved.

〔Example〕

An embodiment of the present invention is shown in FIGS. 1 to 5 below.

In Fig. 5, the horizontal rotating shelf io has two sprockets 1 and 2 arranged at a constant interval in the horizontal direction, a drive device 3 that drives one of the sprockets 2, and an endless shape between the two sprockets 1 and 2. Chain 5 hung on the
A plurality of trays 7 on which packets 6 and the like are placed are fixed to the chain 5 and connected at equal intervals, and an inner rail 8 for horizontally supporting the trays 7. It is composed of an outer rail 9 and the like. With the above configuration, one horizontal rotating shelf 10 is configured and stacked in multiple stages.

Reference numeral 11 denotes a transfer device for taking out and loading buckets from the tray 7. This configuration is well known, and since two packets 6 are placed on one tray 7 in parallel, the transfer device 11 also includes two sets of transfer mechanisms.

In FIGS. 2 to 4, one tray 7 carries two packets 6 horizontally in parallel, so two inner wheels 4 and two outer wheels are mounted on the inner end and outer end 13 of the tray 7, respectively. The wheels 4b are attached, and the inner rail 8
and rests on the outer rail 9. The width bz (diameter da) of the outer wheel 4b is the width bx (diameter d) of the inner wheel 4b.
x ) is larger than (d1=d2.b2>bl), so the load capacity Wz of the outer wheel 4b is larger than the load capacity W1 of the inner wheel 4a from the formula fi+ (21) (W2>Wl
).

The chain 5 includes a plurality of links 51 and a plurality of bins 52 . It consists of guide rollers 5a, 5b, 5c, and 5d rotatably attached to the lower end of the bin 52.

The sprocket 1.2 engages with the guide rollers 51 to 5d, drives the y-8-n 5, and causes the plurality of trays 7 attached to the chain 5 to travel.

In such a configuration, the sideslip speed P1+P2 of the inner and outer wheels 4J and 4b attached to the plurality of trays 7 is larger for the outer wheel 4b than for the inner wheel 4a at the turning portion, but the speed of the wheels is correspondingly higher. Load capacity f [Wl # Wt is that the outer wheel 4b is higher than the inner wheel 4M.
It's bigger.

As a result, in the case of a horizontal carousel with a rotating section and when the inner wheels of the tray always travel on the inner rail in the rotating section, the difference in wear life caused by skidding between the inner and outer wheels becomes smaller.

In addition to configuring the width b2 of the outer wheel to be larger than the width b1 of the inner wheel, B 1 of the above formula 111 and formula (2)
eE2+ dIn d2a δ1* '2y
A similar effect can be obtained by setting tit t2 so that (W2 > Wl).

Another embodiment shown in FIG. 6 shows a case where a plurality of outer wheels 4b having the same load capacity W1 as the inner wheels 4a attached to the tray 7 are used.

This is the load capacity t(W
In this embodiment, the outer wheels 4b of
is proportional to (R2-sin θ2/(R1-sjn θ1). From this, it can be understood that the same effect can be obtained by providing different numbers of load-bearing wheels with the same number.

〔Effect of the invention〕

According to the present invention, by running at high speed, it is possible to reduce the difference in life between the inner and outer wheels of the tray, thereby improving reliability.

[Brief explanation of the drawing]

! Figure J1 is a plan view of the rotating part of a horizontal rotating shelf according to an embodiment of the present invention, Figure 2 is a plan view similar to Figure 1 when the position of the tray is different from that in Figure 1, and Figure 3 is a plan view of the rotating part of a horizontal rotating shelf according to an embodiment of the present invention. 4 is a longitudinal sectional view of the main part of FIG. 2, FIG. 5 is a plan view of the entire horizontal rotating shelf, and FIG. 6 is a plan view of a tray according to another embodiment of the present invention. It is. 1.2... Sprocket, 3... Drive device, 4a... Inner wheel, 4b... Outer wheel, 5... Chain, 6... Packet, 7... Tray, 8... Inner rail, 9... Outer rail, L... Inner end, 13... ...Outer edge agent Patent attorney Masaru Ogawa Male 7.7.N ゛゛t Oh! Prisoner';43 Kunii Darkness';4Z Figure

Claims (1)

[Claims] 1. A plurality of shelves for storing cargo, two or more inner wheels and two or more outer wheels that vertically support the shelves, and the shelves are horizontally connected endlessly. In a rotary shelf consisting of a traction chain, a guide roller provided on the traction chain, and a drive device that engages the guide roller and supplies rotational power, the load capacity W_2 of the outer wheel is equal to the load capacity W_2 of the inner wheel. A rotating shelf characterized in that the load is larger than W_1. 2. The rotating shelf according to claim 1, wherein the width B_2 of the outer wheel is larger than the width B_1 of the inner wheel. 3. The rotating shelf according to claim 1, wherein the outer wheel has a hardness E_2 greater than the inner wheel hardness E_1. 4. The rotating shelf according to claim 1, wherein the outer wheel thickness T_2 of the outer wheel is larger than the outer ring thickness T_1 of the inner wheel. 5. In the carousel according to the first aspect, a ratio W_2 of the load capacity W_2 of the outer wheel and the load capacity W_1 of the inner wheel.
/W_1 is the turning radius R_2 of the outer wheel at the turning section, the slip angle θ_2, the turning radius R_1 of the inner wheel, and the slip angle θ
Ratio of _1 [(R_1・sinθ_1)/(R_2・si
nθ_2)]. 6. In the carousel according to the first aspect, the product W_2·n_2 of the load capacity W_2 of the outer wheel and the number n_2 is the product W_1·n_1 of the load capacity W_1 of the inner wheel and the number n_1.
A rotating shelf characterized by being larger than the original.