JPH0427388Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a trackless movable shelf, more specifically, a trackless movable shelf, more specifically, a ground wheel that runs while touching the floor on the bottom of the trolley, and a plurality of stages on the upper part of the trolley. The present invention relates to a trackless type movable shelf comprising a pair of shelf frames each having a shelf arranged with their back sides facing each other.

(Prior Art) Conventionally, as this type of mobile shelf, rails are laid on the floor, rolling wheels guided along the rails are attached to the lower part of the cart, and the rolling wheels are guided along the rails. A rail-type movable shelf is known in which the cart is moved by being guided.
When moving the cart and loading/unloading cargo onto/from the shelf frame using a forklift, etc.
There have been cases where the rails have been in the way, making it impossible to smoothly load and unload cargo using the forklift or the like.

Therefore, we previously published Utility Model Application No. 61-21321 (Utility Model Application No. 62
-134433), etc., the trackless type of movement that makes the floor surface flat without laying rails etc. so that cargo can be smoothly loaded and unloaded by the forklift etc. This movable shelf consists of a pair of shelf frames equipped with multiple shelves on the top of the cart, with their back sides facing each other, and a floor on the bottom of the cart. While installing a grounding wheel that runs in contact with the surface, a guide rail is installed on the side stationary member of the truck, and a guide roller guided along the guide rail is installed on the side of the truck, and each of the shelf frames The cart is moved by guiding the guide rollers along the guide rails while receiving the load of the luggage stored thereon by the grounding wheels.

By the way, in the trackless type movable shelf as described above, a pair of shelf frames are arranged on the trolley, and cargo is stored in each shelf frame, and the trolley is moved or stopped. There is a risk that the respective shelf frames may be mutually deformed and distorted due to the weight of the cargo or the inertial force that acts when the trolley moves or stops.Therefore, in order to prevent the occurrence of this distortion, It is necessary to connect each shelf frame with a brace or the like to strengthen the tension and compressive strength of each shelf frame.

Therefore, in providing the braces between the shelf frames without interfering with the loading and unloading of cargo into and out of the shelf frames, the shelf frames are arranged so that the back sides thereof face each other to the cart. Using a connecting body with mounting plates at both ends, each mounting plate of this connecting body is fixed to the back side of each shelf frame, and the intermediate part of the connecting body is fixed to the back side of each shelf frame. The idea was to connect the back sides of the shelf frames with the braces, by attaching the braces to the parts, without the braces interfering with the loading and unloading of cargo into the shelf frames.

(Problem to be solved by the invention) However, in the trackless type movable shelf as described above, an uneven load tends to occur at the attachment site of the brace and the connecting body for the following reasons, and this uneven load There has been a problem in that metal fatigue occurs at an early stage in the mounting portion due to repeated exposure, resulting in damage to the mounting portion.

In other words, it is desirable that the floor surface on which the grounding wheel touches the ground is completely flat, but it is extremely difficult to make the entire floor surface flat due to construction technology, and the floor surface may have some unevenness. Therefore, the weight of the cargo stored in each shelf frame causes the truck to deform in accordance with the shape of the floor surface, and this deformation creates a bias between the connecting body and the brace. In addition, when a heavy object is stored in each of the shelf frames, the deformation of the shelf frame due to the heavy object also causes the above-mentioned gap between the connecting body and the brace to be applied. In addition, even when the cart is moved or stopped with cargo stored in each of the shelf frames, an uneven load due to inertia acts between the connecting body and the brace. As a result, repeated exposure to these unbalanced loads caused metal fatigue to occur at an early stage at the attachment site between the connecting body and the brace.

The present invention was devised in view of the above-mentioned problems, and its purpose is to connect the braces by interposing an elastic member in the middle of the brace and absorbing the unbalanced load with the elastic member. To provide a trackless movable shelf that can be used for a long period of time by preventing metal fatigue from occurring at the attachment site to the body.

(Means for Solving the Problems) The present invention consists of a pair of shelf frames 3, 3 each having a plurality of shelves 3a on the upper part of a cart 1 having a grounding ring 2 at the bottom.
are trackless movable shelves arranged with their back sides facing each other, and the both side frames 3, 3 are connected by a plurality of connecting bodies 9, and the connecting bodies 9, 9 are connected to each other by a plurality of connecting bodies 9.
A brace 10 is installed between the braces 1 and 1.
0 is divided into two divided ends 10.
This is characterized in that an elastic member 30 is interposed between a and 10a.

(Function) When an unbalanced load occurs between the connecting body 9 and the brace 10, this unbalanced load is transferred to the divided ends 10a, 10b of the brace 10.
This is absorbed by the elastic member 30 interposed therebetween, and therefore, occurrence of metal fatigue in the connecting body 8 due to repetition of the uneven load is prevented.

(Embodiments) The trackless movable shelf according to the present invention will be described below with reference to embodiments shown in the drawings.

5 and 6 show the overall structure of the trackless movable shelf. In each figure, 1 is a truck, and a plurality of ground wheels 2 are provided at the bottom of the truck 1. At the upper part, a plurality of sets of two shelf frames 3 made of metal material are attached back to back at front and rear positions in the moving direction.

Each shelf frame 3 is, as shown in detail in FIG.
In the upper part of the rectangular truck 1, a plurality of columns 4, 4, which are opposed to each other in the front and back direction, are assembled and installed at a predetermined interval in the left and right direction, and between the left and right opposing parts of each of these columns 4, , a plurality of horizontally extending horizontal bars 5 are constructed, and a plurality of diagonally extending connecting members 6 are assembled between opposing portions of each of the pillars 4 in the front-rear direction, and each of the horizontal bars 5 For example, a shelf board or the like is installed on the top to form a shelf 3a for storing luggage.

The shelf frame 3 is also formed on the rear side of the truck 1, which is opposite to the side on which the shelf frame 3 is formed, in the same manner as in the case described above.

Further, the trolley 1 provided with a plurality of shelf frames 3 as described above may be arranged in plural sets between a pair of fixed shelves 7, 7 each forming a plurality of luggage storage shelves 7a, for example. It is mainly movable in the front and back direction by one width or more, and by moving each of the carts 1, it is possible to place a load onto one of the shelf frames 3 provided on each of the carts 1. I'm trying to make some changes.

Furthermore, the grounding wheel 2 provided at the lower part of the bogie 1
As is clear from FIGS. 5 and 6, it is composed of a plurality of drive wheels 21 and a plurality of idle wheels 22, and the drive structure for the drive wheels 21 is as follows. .

That is, a drive motor 23 is attached to the central lower position of the truck 1, and a drive shaft 24 extending in the lateral direction of the truck 1 is connected to the drive motor 23, and the drive shaft 24 is driven at multiple locations in the length direction. While supporting the sprocket 25, each sprocket 25 is interlocked and connected to each of the drive wheels 21, and the drive motor 23 drives the drive shaft 24 and each of the sprockets 25 to connect each of the drive wheels 21.
1, and each drive wheel 2
1, the free wheel 22 is rotated to follow the movement of the trolley 1.

However, in the trackless movable shelf as described above,
A plurality of connecting bodies 9 each having mounting plates 8, 8 are respectively attached to a plurality of places on the back side of each shelf frame 3 arranged back to back on the trolley 1, and each of these connecting bodies 9 The back surfaces of each shelf frame 3 are integrally connected, and two braces 10 are installed between the back surfaces of the shelf frames 3, 3 so as to intersect diagonally through these connecting bodies 9, 9. , the middle part of the brace 10 is divided, and these divided end parts 10
An elastic member 30 is interposed between a and 10b.

Specifically, as shown in FIGS. 1 to 3, the brace 10 includes a brace body 11 made of a shaft rod made of iron or the like, connecting plates 12 and 13 fixed to both ends of the brace body 11, and the brace body 11. and a turnbuckle 14 interposed in the middle part of the
With the brace main body 11, both connecting plates 12, 13, and turnbuckle 14 connected together, the connecting plates 12, 13 are inserted and fixed into the intermediate portions of the respective connecting bodies 9 to a support plate 15 through fixing bolts 16. On the other hand, the brace body 11 is divided between one end side of the turnbuckle 14 and the connecting plate 12, and these two divided ends 10a, 10 are fixed.
An elastic member 30 made of a compression spring is interposed in b.

As an intervening means for the compression spring 30, one of the divided ends 10a and 10b is provided with a cylindrical body 33 having a mounting part 31 at one end and a lid part 32 at the other end. are connected by a bolt 18 via a connecting rod 17, while the other split end 10
A threaded portion 34 is formed in b, and the threaded portion 34 is inserted into the cylindrical body 33 through a through hole 32a provided at the center of the lid portion 32, and a spring receiving plate 35 is attached to the tip of the threaded portion 34. Provide this spring receiving plate 35
A compression spring 30 is interposed between the cover portion 32 and the cover portion 32.

Furthermore, a regulating means is provided at an intermediate portion of the threaded portion 34 to regulate the amount of movement of the other divided end portion 10b relative to the cylindrical body 35 to a constant value.

This regulating means is located in the middle part of the threaded part 34.
A cylindrical shaft 40 with a diameter smaller than the through hole 32a of the lid part 32 and a constant length; a cylindrical shaft 40 with a diameter smaller than the through hole 32a and a constant length; and two washers with a diameter larger than the through hole 32a. 41, 42, position adjusting nuts 43, 44 and locking nut 45 screwed into the threaded portion 34, and the cover portion 3 of the washers 41, 42 disposed on both sides of the cylinder shaft 40.
2, the amount of movement of the other split end 10b relative to the cylindrical body 33 is restricted within a certain range.

Normally, the compression spring 30 is compressed by a predetermined amount by adjusting the length of the brace body 11 using the turnbuckle 14, so that the lid portion 32 is positioned at an intermediate portion between the washers 41 and 42.

As described above, the compression spring 3 is attached to the middle part of the brace 10.
0 is installed, for example, if the floor surface on which the grounding wheel 2 is grounded has an uneven displacement surface, the weight of the cargo stored in each of the shelf frames 3 causes the trolley 1 to move over the floor surface. Even if an unbalanced load is generated between the connecting body 9 and the brace 10 due to this deformation, this unbalanced load will be caused by It is absorbed by the expansion or compression within a certain range of the compression spring 30 interposed between the spring receiving plate 35, and therefore, the connection of the brace 10 caused by the repeated action of the unbalanced load is absorbed. Metal fatigue does not occur at the attachment site to the body 9, and rattling and breakage of the attachment site can be prevented for a long period of time.

In the embodiment shown in FIG. 3, when attaching the mounting plate 8 of the connecting body 9 to the column 4 of the shelf frame 3, an elastic body 46 made of rubber or the like is inserted between the mounting plate 8 and the column 4. The elastic body 47 and the contact plate 48 are interposed and also stacked on the upper surface of the mounting plate 8 in an overlapping manner, and each of these is configured to be fixed with a fixing bolt 49, thereby achieving the connection between the contact plate 48 and the contact plate 48. The elastic body 4 interposed between the body 9 and the mounting plate 8
7 and the elastic body 46 interposed between the mounting plate 8 and the support column 4, the uneven load generated on the support column 4 is reliably absorbed.

In the embodiment shown in FIG. 6, a guide rail 50 is attached to the side wall of the truck 1 and extends in the front and back direction of movement of the truck 1, and the guide rail 50 is guided to the side of the truck 1 along the guide rail 50. When a support member 52 having guide rollers 51 is attached and the cargo stored in each shelf frame 3 on the trolley 1 is taken out by a forklift or the like, the load of the cargo in each shelf frame 3 is adjusted to the ground. The guide roller 51 is moved to the guide rail 5 while being received by the ring 2.
The cart 1 is moved by being guided along the line 0.

In the above embodiment, a compression spring was used as the elastic member 30, but other elastic members may be used as long as they can absorb the uneven load generated between the connecting body 9 and the brace 10. For example, a tension spring 30 as shown in FIG. 7 may be used.

In this case, both split ends 10a and 10b of the brace body 11 are bent into a hook shape, and the hook parts 30a and 30b at both ends of the tension spring 30 are hooked onto each of the split ends 10a and 10b, so that the tension A spring 30 is interposed between both divided ends 10a and 10b, and this tension spring 30 is attached to the turnbuckle 14.
By adjusting the length of the spring 30, the spring 30 is used in a state where it is extended by approximately 1/2 of the tension stroke.

(Effects of the invention) As explained above, the trackless movable shelf of the present invention has
A pair of shelf frames 3, 3 arranged on the upper part of the truck 1 with their back sides facing each other are connected by a plurality of connecting bodies 9, and a brace 10 is installed between the connecting bodies 9, 9.
, and the middle part of the brace 10 is divided, and the elastic member 30 is interposed between the two divided ends 10a and 10b, so that there is no bias between the connecting body 9 and the brace 10. When a load occurs, this uneven load is absorbed by the elastic member 30 interposed in the middle part of the brace 10.
Therefore, by repeating the unbalanced load, the connecting body 9
This prevents metal fatigue from occurring at the attachment site between the brace 10 and the brace 10, making it possible to use it for a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a front view of the brace used for the trackless movable shelf according to the present invention, Fig. 2 is an enlarged sectional view of the main part,
Fig. 3 is a perspective view showing the mounting structure of the brace and the connecting body, Fig. 4 is a perspective view showing the structure of the shelf frame portion, Fig. 5 is a side view showing the overall structure of the trackless movable shelf, and Fig. 6 7 is a plan view with the same parts omitted, and FIG. 7 is a side view showing another embodiment of the elastic member. 1...Dolly, 2...Grounding wheel, 3,3...Shelf frame,
3a...Shelf, 9...Connection body, 10...Brace,
10a, 10b...divided end portion, 30...elastic member.

Claims (1)

[Scope of utility model registration request] It is a trackless movable shelf in which a pair of shelf frames 3, 3 each having a plurality of shelves 3a are arranged on the upper part of a cart 1 having a grounding wheel 2 at the bottom, with their back sides facing each other. Then, the both side frames 3, 3 are connected by a plurality of connecting bodies 9, a brace 10 is attached between the connecting bodies 9, 9, and the middle part of the brace 10 is divided, and these two divided ends are connected. A trackless movable shelf characterized in that an elastic member 30 is interposed between 10a and 10a.