JPH09156729A - Storage rack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage rack which is compact and is capable of attaining easy safety control. SOLUTION: Rack arms 3, 7a, 7b are bridged at a lower end, a middle part, and an upper end between a columns 1a and 1b, and the base ends of the rack arms 3, 7a, 7b are jointedly-supported with supporting shafts 3a, 5a, 5b so that the rack arms 3, 7a, 7b may be stand vertically, supporting platforms 21, 17 which support the rack arms 7a, 7b horizontally are fitted, and the supporting platform 17 is made capable of moving up and down. Small-diameter pulleys 8a, 8b and large-diameter pulleys 9a, 9b which rotate integrally with the rack arms 7a, 7b are fitted at the supporting shafts 5a, 5b. The outer circumference of the small-diameter pulley 8b is connected with the top of the rack arm 3 through a wire 14b, and the outer circumference of the large-diameter pulley 9b is connected with the bottom of the column 1b with an extension coil spring 11b or the like. The outer circumference of the small-diameter pulley 8a is connected with the supporting platform 17 through a wire 14a. The outer circumference of the large diameter pulley 9a is connected with the middle part of the column 1a with an extension coil spring 11a or the like, thus constituting the storage rack.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage rack, and is particularly effective when applied to a rack for storing long bound steel pipes or shaped steel materials.

[0002]

2. Description of the Related Art In a storage rack used for shelving and storing long bundled steel pipes and shaped steel materials, the rack arm on the upper side of the storage rack can be retracted in order to facilitate storage and removal of the steel pipes and steel materials. It is like this. A conventional example of such a storage rack is shown in FIGS.

As shown in FIG. 9, a large number of pillars 31 are erected on the floor surface 50 of the warehouse at predetermined intervals, and as shown in FIG. A cylindrical shaft 33a is supported via a support 32a so as to be slidable in the vertical direction. Above the cylindrical shaft 33a, the cylindrical shaft 33b is supported by the column 31 coaxially with the cylindrical shaft 33a so that the cylindrical shaft 33b can rotate in the circumferential direction and can slide in the vertical direction via the support tool 32b. .
Although not shown, the same number of cylindrical shafts as the cylindrical shaft 33b are provided on the cylindrical shaft 33b according to the number of rack stages.

A connecting rod 34 penetrates the cylindrical shafts 33a and 33b and the cylindrical shaft (not shown), and the lower end of the connecting rod 34 is inserted into the hole 31b of the substrate 31a of the support column 31. A compression coil spring 35 is provided so as to surround the connecting rod 34 between the cylindrical shaft 33a and the hole 31b of the substrate 31a of the support column 31, between the cylindrical shafts 33a and 33b, and between the cylindrical shafts (not shown). ing. The wire 3 is attached to the outer peripheral surface of the cylindrical shaft (not shown) excluding the cylindrical shafts 33a and 33b and the cylindrical shaft located at the uppermost stage.
One end of 6 is fixed, respectively. These wires 36
Have counterweights 38 attached to the other ends through sheaves 37a and 37b, respectively, and the counterweights 38 are attached so as to position the cylindrical shafts 33a and 33b and the cylindrical shaft (not shown) upward. In addition to being urged, the cylindrical shaft 33b and the cylindrical shaft (not shown) can be urged to rotate.

A guide surface 39 having a spiral shape along the circumferential direction of each cylindrical shaft 33b is provided on the supporting member 32b and the supporting member (not shown) which support the cylindrical shaft 33b and the cylindrical shaft (not shown).
A guide member 39 having a is provided so as to surround each cylindrical shaft 33b. Guide rollers 40 that roll on the guide surface 39a of the guide member 39 are rotatably provided on the outer peripheral surfaces of the cylindrical shaft 33b and a cylindrical shaft (not shown). Further, the cylindrical shafts 33a, 3
One ends of rack arms 41a and 41b supporting the product 100 are fixed to the outer peripheral surface of 3b, and one end of a rack arm (not shown) similar to the rack arm 41b is also fixed to the outer peripheral surface of a cylindrical shaft (not shown). Has been done. That is, the rack arms 41a and 41b are supported only on one end side.

In such a storage rack, when the product 100 is placed on the lowermost rack arm 41a, the product 1
The weight of 00 causes the cylindrical shaft 33a to move downward, and due to the downward movement of the cylindrical shaft 33a and the balance between the biasing force of the compression coil spring 35 and the weight of the counterweight 38, the cylindrical shaft 33b begins to descend. The rack arm 41 is rotated by the action of the guide member 39 and the guide roller 40.
b moves to the load receiving position. Then, when the product 100 is placed on the rack arm 41b, the rack arm 41b operates in the same manner as described above.
The rack arm (not shown) located above the product is pivoted to the load receiving position, and by repeating this operation, the rack arms on the upper stage of the rack arm on which the product 100 is placed are sequentially placed at the load receiving position. Become so.

On the other hand, when the stored product 100 is taken out, for example, in order to simplify the explanation, the rack 41a is used.
When the product 100 is placed only on, the cylindrical shaft 33a moves upward by the action of the compression coil spring 35 and the counterweight 38 when the product 100 is lifted, and the cylindrical shaft 33b moves to the cylindrical shaft 33a. The upward movement and the action of the compression coil spring 35 and the counterweight 38 cause the product 100 to rise, and the guide members 39 and the guide rollers 40 rotate to move the rack arm 41b to the retracted position to facilitate the product 100. You will be able to take it out. In addition, when taking out the product 100 mounted on the rack arm (not shown) in the upper stage, the same operation as described above is performed.

That is, according to such a storage rack,
The rack arm can be retracted without using an automatic control mechanism equipped with a drive unit, a detector, and the like, and the cost of equipment can be suppressed.

[0009]

However, in the storage rack as described above, the rack arms 41a and 41b are used.
Since only one end of the rack arm 41a and 41b is supported, the support structure for the rack arms 41a and 41b becomes large, and the rack arm 41b and the like are pivoted in the horizontal direction, which not only requires a large installation space. However, it took a lot of effort for safety management.

[0010]

In order to solve the above-mentioned problems, the storage rack according to the present invention bridges between a plurality of columns which are erected on the floor surface at predetermined intervals and the columns which face each other. A rack arm having a plurality of stages arranged in the vertical direction of the support column, the base end of which is pivotally supported so that it can be switched between a horizontal state and a vertical state, and the horizontal state of the uppermost rack arm. Uppermost rack arm supporting means for supporting the tip of the rack arm at the uppermost stage so as to maintain the above, and the uppermost stage and the lowermost stage so as to maintain the horizontal state of the rack arm between the uppermost stage and the lowermost stage. Between the rack arms, the middle rack arm supporting means movable in the vertical direction and the rack arms at the lowermost stage are held at a position higher than their base ends and at the lowermost stage. Concerned The rack arm closest to the rack arm above the rack arm is held in a vertical state, and when the lowermost rack arm is in a horizontal state, the tip of the rack arm held in the vertical state is The lowermost stage interlocking mechanism that swings the rack arm so as to be positioned above and above the middle rack arm support means, and the middle rack arm support means that holds the middle rack arm support means at a predetermined height position. The rack arm closest to the rack arm above the supported rack arm is vertically held, and the rack arm supported by the middle rack arm support means is brought into a horizontal state by the middle rack arm support means. If the rack arm is supported and moved downward, attach the tip of the rack arm held vertically to the rack arm. And a middle stage interlocking mechanism for swinging the rack arm so as to be located near the upper part of the middle rack arm supporting means for supporting the upper rack rack and a lower rack arm for holding the uppermost rack arm in a vertical state. Holds the middle rack arm support means for supporting the rack arm closest to the rack arm at a predetermined height position, and the rack arm supported by the middle rack arm support means holds the middle rack arm support means. When the rack arm is supported horizontally and moved downward, the uppermost rack arm is rocked so that the uppermost rack arm is supported by the uppermost rack arm supporting means. It is characterized by being prepared.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a storage rack according to the present invention will be described with reference to FIGS. 1 is a side view of the unit, FIG. 2 is a view taken along the line II-II of FIG. 1, FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 1, and FIG.
IV-IV line arrow view, FIG. 5 is an extracted enlarged view of the arrow V portion of FIG. 1, and FIG. 6 is a VI-VI line sectional arrow view of FIG.

As shown in FIG. 1, columns 1a and 1b are erected at a predetermined interval on a floor surface 50 of the warehouse. The floor beams 2 fix the lower ends of the columns 1a and 1b. A rack arm 3 is arranged on the lower end side between the columns 1a and 1b so as to bridge the columns 1a and 1b, and the rack arm 3 is configured to swing along a vertical plane. The base end, which is the end on the side of the column 1a, is supported by the support shaft 3a.

As shown in FIGS. 1 to 4, a rack arm 7a is attached to a bracket 4a provided near the upper end of the column 1a.
Of the rack arm 7a is rotatably supported via a support shaft 5a and a bearing 6a.
In addition to being able to face the horizontal direction so that a bridge can be bridged between b, it can also be retracted by facing the vertical direction. A small-diameter pulley 8a and a large-diameter pulley 9a are provided on both ends of the support shaft 5a coaxially with the support shaft 5a, and the small-diameter pulley 8a and the large-diameter pulley 9a are connected to the rack arm 7a. It is designed to rotate integrally.

As shown in FIG. 1, in the middle of the column 1b,
The base end of the rack arm 7b is rotatably supported via a bracket, a bearing, and a support shaft 5b (not shown), and the rack arm 7b can be oriented horizontally so as to bridge between the columns 1a and 1b. At the same time, it is possible to evacuate in the vertical direction. A small-diameter pulley 8b and a large-diameter pulley 9b are provided on both ends of the support shaft 5b coaxially with the support shaft 5b. The small-diameter pulley 8b and the large-diameter pulley 9b are provided on the rack arm 7 respectively.
It is designed to rotate integrally with b.

As shown in FIG. 1, one end of a wire 14b is fixed to the outer peripheral surface of the small diameter pulley 8b, and the other end of the wire 14b is fixed to the tip of the rack arm 3. On the other hand, one end of a tension coil spring 11b is connected to the outer peripheral surface of the large-diameter pulley 9b via a wire 10b. The other end of the tension coil spring 11b is attached to an eyebolt 13b that is screwed into a bracket 12b provided on the lower end side of the column 1b.
By adjusting the screwing position of b with respect to the bracket 12b, the biasing force of the tension coil spring 11b can be adjusted. The above eyebolt 1
The screwing position of 3b is set so that the tip of the rack arm 3 is located above the base end.

Further, as shown in FIG. 1, one end of a tension coil spring 11a is connected to the outer peripheral surface of the large-diameter pulley 9a via a wire 10a. Tension coil spring 11
The other end of a is a bracket 1 provided in the middle of the pillar 1a.
It is attached to an eyebolt 13a that is screwed to 2a, and the eyebolt 13a can adjust the biasing force of the tension coil spring 11a by adjusting the screwing position of the eyebolt 13a with respect to the bracket 12a.

As shown in FIGS. 1, 5 and 6, a support base 17 for supporting the tip end of the rack arm 7b is provided in the longitudinal direction of the column 1a on the side facing the column 1b in the middle of the column 1a. It is supported via a slide plate 15 and a slide shoe 16 so that it can slide between the stoppers 18a and 18b. A buffer 19 is provided on the support table 17. An eyebolt 20 is screwed onto the support base 17. One end of the wire 14a is attached to the eyebolt 20. The other end of the wire 14a is fixed to the outer peripheral surface of the small-diameter pulley 8a, and the eyebolt 20 is vertically adjusted with respect to the support 1a by adjusting the screwing position of the eyebolt 20 with respect to the support 17. The position of the direction can be adjusted. In addition, the screwing position of the eyebolt 20 is such that when the support table 17 does not support the rack arm 7b, the support table 17 is brought into contact with the stopper 18a so that the support table 17 is not supported.
When the support of the rack arm 7b is received by the support base 1
It is set so that 7 contacts the stopper 18b.

As shown in FIG. 1, a support base 21 for supporting the tip of the rack arm 7b is attached to the upper end of the support column 1b opposite to the support column 1a. A buffer 22 is attached on the support base 21.

The radius ratio between the small-diameter pulleys 8a and 8b and the large-diameter pulleys 9a and 9b, the length of the wires 14a and 14b, the fixing position to the small-diameter pulleys 8a and 8b, and the biasing force of the tension coil springs 11a and 11b. Wires 10a, 10b
The fixing position of the rack arm 3 to the large-diameter pulleys 9a and 9b is such that the longitudinal direction of the rack arm 7b is oriented vertically when the tip of the rack arm 3 is located higher than the base end, and the rack arm 3 is horizontal. Rack arm 7b
The front end of the rack arm 7a is inclined to a position immediately before contacting the support base 17, and when the support base 17 contacts the stopper 18a, the longitudinal direction of the rack arm 7a is oriented vertically.
It is set so that the longitudinal direction of the rack arm 7a is oriented in the horizontal direction when the support table 17 contacts the stopper 18b.

In this embodiment, the rack arm 3 constitutes the lowermost rack arm, the rack arm 7a constitutes the uppermost rack arm, and the rack arm 7
b constitutes a rack arm between the uppermost stage and the lowermost stage, and the uppermost stage rack arm support means is constituted by the support base 21, the buffer body 22, etc., and the sliding plate 15, the slide shoe 16, the support base 17, the stopper 18a, 18b, the buffer body 19 and the like constitute the middle rack arm support means, and the wire 10b,
14b, the tension coil spring 11b, the bracket 12b, the eyebolt 13b, etc. constitute a lowermost stage interlocking mechanism, and include a small diameter pulley 8a, a large diameter pulley 9a, and wires 10a, 14
a, the tension coil spring 11a, the bracket 12a, the eye bolts 13a, 20 and the like so as to serve as both the middle stage interlocking mechanism and the top stage interlocking mechanism.

The operation of the storage rack configured as described above will be described below with reference to FIG. When the product 100 is transported by an overhead crane or the like and placed on the rack arm 3 from an empty state (FIG. 7A), the tip of the rack arm 3 is lowered and the rack arm 3 becomes horizontal, so that the wire 14b. The small-diameter pulley 8b rotates through the rack arm 7b, and the rack arm 7b swings and tilts so that the tip of the rack arm 7b approaches the support base 17 (FIG. 7B). Next, when a new product 100 is placed on the rack arm 7b, the tip of the rack arm 7b pushes down the support base 17, and the support base 17 is supported by the stopper 18b to support the rack arm 7b, and at the same time, the support base is supported. With the above movement of 17, the small-diameter pulley 8a is rotated via the wire 14a, the rack arm 7a is rotated, and the rack arm 7a is tilted in the horizontal direction to fall on the support base 21.
The new product 100 can be placed on the rack arm 7a (FIG. 7D) by being supported by the rack arm 7a (FIG. 7C).

On the other hand, the product 1 stored as described above
When removing 00, the product 1 on the rack arm 7a
After unloading 00, the product 100 is lifted on the rack arm 7b, and due to the action of the tension coil spring 11b, the large diameter pulley 9b is slightly rotated via the wire 100,
The tip of the rack arm 7b moves away from the support base 17, and the action of the tension coil spring 11a causes the large-diameter pulley 9a to rotate via the wire 10a, so that the support base 17 stops.
The rack arm 7a rises in the vertical direction and retracts until it comes into contact with the rack arm 7a, and the product 100 stored on the rack arm 7b can be easily taken out. Next, when the product 100 on the rack arm 3 is lifted, the large-diameter pulley 9b rotates via the wire 10b by the action of the tension coil spring 11b, and the tip of the rack arm 3 is positioned above the base end. The rack arm 7b rises in the vertical direction and retracts, so that the product 100 stored on the rack arm 3 can be easily taken out.

Therefore, according to such a storage rack,
Not only can the rack arms 7a and 7b be retracted without using an automatic control mechanism including a drive unit and a detector, but also the rack arms 7a and 7b are supported at both ends thereof. Therefore, the support structure of the rack arms 7a and 7b can be simplified, and the rack arms 7a and 7b are swung on the vertical plane, so that the waste of the installation space can be reduced and The labor required for safety management can be reduced.

In this embodiment, the case of three stages has been described, but it is of course possible to use four stages as shown in FIG. In such a four-tier case,
The difference from the case of the above-described three stages is that the middle stage interlocking mechanism and the top stage interlocking mechanism are separately provided. In particular,
As shown in FIG. 8, the small-diameter pulley 8c is attached to the rack arm 7c disposed above the rack arm 7b between the rack arm 7a which is the uppermost rack arm and the rack arm 3 which is the lowermost rack arm. , A large-diameter pulley 9c, wires 10c and 14c, a tension coil spring 11c, a bracket 12c, an eyebolt 13c, etc. are independently provided, and a small-diameter pulley 8a provided on the rack arm 7a, a large-diameter pulley 9a, and a wire. 10a, 14a, tension coil spring 11a, bracket 12a, eyebolt 13
That is, a and the like are independent top-stage interlocking mechanisms.

With this structure, the operation can be performed in the same manner as in the case of the three stages described above, and the number of storage stages can be increased. Further, when the number of stages is five or more, the rack arms between the uppermost rack arm and the lowermost rack arm are arranged by the required number of stages, and a plurality of middle stage interlocking mechanisms as described above are provided, The operation can be performed in the same manner as in the case of the above three stages, and the number of storage stages can be further increased.

[0026]

In the storage rack according to the present invention, it is of course possible to retract the rack arm without using an automatic control mechanism equipped with a drive unit, a detector, etc. The support structure of the rack arm can be simplified because it is supported, and the rack arm can be swiveled on the vertical plane, so that the waste of the installation space can be reduced and the safety can be improved. The management effort can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a unit of an embodiment of a storage rack according to the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

3 is a sectional view taken along the line III-III of FIG.

FIG. 4 is a view taken along the line IV-IV in FIG. 3;

FIG. 5 is an enlarged view of an arrow V portion in FIG.

6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is an explanatory diagram of a product storage procedure.

FIG. 8 is a side view of a unit of another embodiment of the storage rack according to the present invention.

FIG. 9 is a plan view showing an overall layout of a conventional storage rack.

FIG. 10 is a perspective view in which a part of a unit of a conventional storage rack is extracted.

[Explanation of symbols]

1a, 1b prop 3,7a, 7b, 7c rack arm 8a, 8b, 8c small diameter pulley 9a, 9b, 9c large diameter pulley 10a, 10b, 10c, 14a, 14b, 14c wire 11a, 11b, 11c tension coil spring 12a, 12b, 12c Brackets 13a, 13b, 13c, 20 Eyebolts 15 Sliding plates 16 Slide shoes 17,21 Supports 18a, 18b Stoppers 19,22 Buffers 50 Floors 100 Products

Claims (1)

[Claims] 1. A plurality of columns vertically erected at a predetermined interval on a floor surface and a plurality of columns vertically arranged along the vertical direction of the columns so as to bridge between the columns facing each other. And a rack arm whose base end is swingably supported so that the upper end of the rack arm is supported so as to maintain the horizontal state of the uppermost rack arm. The support means and the middle stage that supports the tip of the rack arm between the uppermost stage and the lowermost stage so as to maintain the horizontal state of the rack arm between the uppermost stage and the lowermost stage and is movable in the vertical direction. A rack arm support means and a rack arm that holds the tip of the lowermost rack arm at a position above its base end and that is closest to the rack arm above the lowest rack arm. When the rack arm is held in the vertical state and the lowermost rack arm is in the horizontal state, the tip of the rack arm held in the vertical state should be positioned near the upper portion of the middle rack arm support means. The lowest stage interlocking mechanism that swings the rack arm, and the middle rack arm support means that holds the middle rack arm support means at a predetermined height position and is closest to the rack arm above the rack arm supported by the middle rack arm support means. The rack arm is held vertically, and the rack arm supported by the middle rack arm support means is held vertically when the middle rack arm support means is supported horizontally and moved downward. So that the tip of the rack arm is positioned near the upper portion of the middle rack arm support means for supporting the rack arm. A middle stage interlocking mechanism that swings the rack arm; and the middle stage rack that holds the uppermost rack arm in a vertical state and supports the rack arm that is closest to the rack arm below the uppermost rack arm. When the arm support means is held at a predetermined height position and the rack arm supported by the middle rack arm support means is moved downward by the middle rack arm support means being supported horizontally, And a top interlocking mechanism for rocking the top rack arm so that the rack arm is supported by the top rack arm support means.