JPH0311940B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention has a plurality of upper and lower shelves, and allows articles placed on these shelves to run on the floor or be transported by truck. This invention relates to a shelf truck having a sliding shelf, which is used for transporting empty shelves after they have been taken out.

Conventional structure and its problems In the past, as seen in Utility Model Application No. 74128 of 1982, columns were erected from the four corners of a horizontal beam with casters at the bottom, and vertical beams were assembled between the columns. A pallet with drawers in which guide rails are installed in multiple stages above and below on the opposing inner surfaces of the support and vertical beam, and drawer bodies (sliding shelves) are arranged between the opposing guide rails via sub-rails. is provided. According to this conventional structure, the drawer main body is unexpectedly pulled out due to vibrations caused when traveling on the floor or being transported by truck, which not only prevents smooth and safe travel and transportation, but also prevents items placed there from falling out. I will invite you. In addition, since it is in a rigid state due to assembly, the volume (occupied space) when the item is taken out and transported empty (when returned) is the same as when it is actually transported, so the amount of transport at one time is will be the same number.

OBJECT OF THE INVENTION An object of the present invention is to provide a shelf truck having sliding shelves that can prevent the shelves from being pulled out unexpectedly during traveling or transportation, and that can make the entire structure compact during empty transportation (return). It is in the point of doing.

Structure of the Invention In order to achieve the above object, the shelf truck having sliding shelves according to the present invention includes a rectangular plate-shaped base having wheels at the bottom, and a pair of side frames attached to both sides of the base so as to be able to rise and fall freely. and an intermediate frame detachably erected on the base between these side frames, and side rails and center rails for shelf support that are attached to each inner surface of both side frames and both sides of the intermediate frame in multiple stages above and below, respectively; A removable top frame between the tops of both side frames and the middle frame that are fixed upright;
A shelf is fitted between opposing side rails and center rails for supporting shelves so as to be slidable in the front and rear directions, and a stopper plate is attached to rods rotatably supported on the front and rear surfaces of the intermediate frame. The shelf drawer prevention device prevents the shelf from being pulled out by rotating a plate to a position facing the opening of the center rail, and an intermediate frame storage space is formed in the base.

Embodiment and Operation An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 to 10, reference numeral 1 denotes a rectangular plate-like frame-like base, on the lower part of one side of which a pair of front and rear free wheels 2 are attached, and on the lower part of the other side a pair of front and rear fixed wheels 3. is installed. At the four corners of the base 1, support legs 4 which are open to the inside and have an L-shape in plan view are erected and fixed, and at the lower ends of these support legs 4, a receiving tray 5 having a downward receiving surface is attached. Side frames 6 are attached to both sides of the base 1 so as to be able to stand up or fall down. That is, the both side frames 6 are composed of a pair of front and rear vertical members 7, a plurality of upper and lower horizontal members 8 that connect the vertical members 7 facing each other at the front and rear, and a damp plate 9 attached to the outer surface of these horizontal members 8. and both vertical members 7
A swing pin 10 is protruded from the lower end of the front and rear surfaces, and a locking pin 1 is provided at a position slightly above this.
1 is provided protrudingly. A vertical guide groove 12 is formed in the front plate or the rear plate of the support leg 4 from the middle part to the lower part to allow the swing pin 10 to rotate and slide. a positioning recess 1 in which the locking pin 11 can be freely engaged and detached from above;
3 is formed. A plurality of main side rails 14 for shelf support in the front and back direction are attached to the opposing surfaces of the both side frames 6 at predetermined intervals, upper and lower, and sub side rails 15 for shelf support are installed between the main side rails 14, respectively. is installed. The main side rail 14 basically has a C-shaped cross section, and has a cutout 16 in the upper flange at the front and rear parts.
A convex portion 17 for a stop is integrally formed on the lower flange near the cutout portion 16. Furthermore, a stopper piece 18 that projects inward is integrally formed at the location of the convex portion 17. The auxiliary side rail 15 similarly has a C-shaped cross section, but has no cutout, and has a stop projection 19 integrally formed on the lower flange at the front and rear parts. In the center between the both side frames 6, an intermediate frame 20 is erected on the base 1 in a detachable manner. That is, the intermediate frame 20 is composed of a pair of front and rear vertical members 21 and a plurality of upper and lower horizontal members 22 that connect these vertical members 21, and an engagement pin 23 is inserted from the front and rear parts of the lowest horizontal member 22. The base 1 is provided with an engaging hole 24 in which the engaging pins 23 can be freely engaged and detached. Main center rails 2 for supporting shelves in the front and back direction are provided on both sides of the intermediate frame 20.
5 are mounted in upper and lower stages at predetermined intervals, and sub-center rails 26 for shelf support are mounted between the main center rails 25, respectively. The main center rail 25 basically has a C-shaped cross section, and has cutout portions 27 formed in the upper flanges at the front and rear ends, and stop portions 27 formed in the lower flanges at the front and rear ends. The convex portion 28 is integrally formed. Furthermore, a stopper piece 29 that projects inward is integrally formed at the location of the convex portion 28. The sub center rail 26 similarly has a C-shaped cross section, but has no cutout, and has a convex stop 3 on the lower flange at the front and rear ends.
0 is integrally formed. Here main side rail 1
4 and the main center rail 25 are at the same level in the vertical direction, and the sub side rails 15 and the sub center rail 26 are also at the same level. Further, each of the convex portions 17, 19, 28, and 30 is at the same position in the front-rear direction. A shelf drawer prevention device 31 is disposed on the front and rear surfaces of the intermediate frame 20. That is, a vertical rod 33 is provided on the front (rear) surface of the intermediate frame 20 and can be raised, lowered, and rotated via a plurality of guide tubes 32. A bent portion 33A is provided at the upper end of this vertical rod 33, and The bent portion 33A serves as an operating portion and a locking portion. The vertical rod 33
When the vertical rod 33 is lowered to the lowest position due to its own weight, a main stopper plate 34 facing the open part of the main center rail 25 and a sub stopper plate 35 facing the open part of the sub center rail 26 are arranged. They are installed alternately in the vertical direction. Reference numeral 36 denotes a top frame that can be attached and detached between the upper portions of the both side frames 6 and the intermediate frame 20 that are fixed upright, and has hooks 37 on both ends thereof that can be fitted and detached from above to the horizontal member 8, and has hooks 37 that can be attached and detached from above to the horizontal member 8. has a hook 38 that can be inserted into and removed from the cross member 22 from above. A shelf 39 is fitted between the main side rail 14 and the main center rail 25 which face each other so as to be slidable in the front and rear directions. This shelf 39 is shaped like a rectangular flat plate framework, and bearings (rollers) 40 supported and guided by the rails 14 and 25 are attached to both sides of the shelf 39, and at the lower part of both sides at the center in the front and rear direction.
A stopper piece 4 that can freely come into contact with the stopper piece 18
1 is installed. A recess with an open upper surface is formed in the base 1, and this recess is used as an intermediate frame storage space 42. A middle part of a cover 43 is fixed 44 to the upper surface of the ceiling frame 36, and the cover 43 has a length that can cover the front and rear surfaces, and both free ends 43A can be fixed to the base 1 with, for example, magic tape. be. 45 is a band locking piece provided on the base 1, 46 is a band, and 47 is an article.

Next, the operation of the above embodiment will be explained. FIGS. 1 to 3 show a state in which articles 47 are stored and can be traveled and transported. In other words, both side frames 6
is erected and swung around the oscillating pin 10, and the locking pin 11 is engaged with the positioning recess 13 to fix the side frame 6 upright on the base 1 side. Further, the intermediate frame 20 is fixed upright on the base 1 side by engaging its engagement pin 23 with the engagement hole 24. A top frame 36 is attached between the cross members 8 and 22 via hooks 37 and 38. Furthermore, a shelf 39 is fitted between the main side rail 14 and the main center rail 25 that face each other,
Articles 47 are placed on these shelves 39. Then, the vertical rod 33 is lowered, causing the main stopper plate 34 to face the open portion of the main center rail 25.
This state is shown by solid lines in FIG. 5, and for convenience, FIG. 1 shows a state in which the main stopper plate 34 is raised and the front surface of the main center rail 25 is opened. Further, the front and rear surfaces are covered with a cover 43. In this state, it can run freely on the floor and can be transported by loading it onto a truck 48 as shown in FIG. This stacking is carried out stably by fitting the upper tray 5 onto the upper end of the lower vertical member 7 from above. Main stopper plates 3 are installed on the front and rear surfaces of the shelf 39 to prevent vibrations during traveling and transportation.
4 are facing each other, it is possible to prevent the shelf 39 from being pulled out unexpectedly. When taking out the article 47, the cover 43 is first raised and folded onto the top frame 36 as shown by the phantom line in FIG. Then, after raising the vertical rod 33 and positioning the main stopper plate 34 above the main center rail 25, the vertical rod 33 is rotated so that the bent portion 33A is attached to the top frame 36 as shown in the imaginary line in FIG. to be locked. At this time, both stopper plates 34 and 35 also face forward and backward. Next, the shelf 39 is pulled out as shown by the solid line in the lower part of FIG. 5, and the article 47 is taken out.
This drawer has a stopper piece 41 on the stopper piece 18.
The bearings 40 are brought into contact with the protrusions 17 and 28, thereby avoiding an unforeseen situation in which another shelf 39 is pulled out due to vibration during pulling out. Note that loading of the articles 47 is performed in the same manner. After all the articles 47 have been taken out, the empty shelf cart 49 is transported (returned) by the truck 48. To carry out this transportation, the following operations are performed using two shelf carts 49 as one set. That is, all the shelves 39 are pulled out from one shelf carriage 49, and these shelves 39 are fitted between the sub side rails 15 and the sub center rail 26 of the other shelf carriage 49, as shown by the imaginary line in FIG. be done. In the other shelf truck 49, both stopper plates 34, 35 are set at the operating position, and the front and rear surfaces are covered with a cover 43. In one of the shelf carts 49 from which the shelves 39 have been removed, the top frame 36 is first removed, and then, as shown in FIG. 10, the removed intermediate frame 20 is stored horizontally in the intermediate frame storage space 42. . Next, both side frames 6 are turned inward and folded onto the base 1. This horizontal fall is performed by raising the side frame 6, removing the locking pin 11 from the positioning recess 13, and then swinging it around the swing pin 10. Next, place the top frame 36 on top of the folded side frame 6.
is placed with the cover 43 and the band 46
Tightening is performed by Transportation (return) is the first
As shown in Figure 2, the other shelf truck 49 is transported in the same manner as in actual transportation;
9 can be folded to reduce its bulk, so it can be stacked in a large amount. Actual transportation (11th
When the number of empty transports (Fig. 12) and empty transports (Fig. 12) are the same, a loadable space A shown in Fig. 12 is created,
This means that more air transportation can be carried out.

Effects of the Invention According to the present invention having the above configuration, the following effects can be expected. In other words, since the shelf drawer prevention device attached to the intermediate frame acts as a stopper on the front and rear surfaces of the shelf, it reliably prevents the shelf from being pulled out unexpectedly due to vibrations generated during travel or transportation. can do. Furthermore, after taking out the articles, by pulling out the shelf of one shelf truck and assembling it into the other shelf truck, the one shelf truck stores the intermediate frame in the base, and the shelves on both sides are placed on this base. The frame can be folded and the top frame placed on top of it to form a compact shape, so it can be transported empty (returned) with half the volume reduced.
In other words, the number of times of transportation can be increased more efficiently than during actual transportation.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view when the article is stored, FIG. 2 is a partially cutaway side view of the same, and FIG.
Figure 3 is a partially cutaway plan view of the same part, Figure 4 is a partially cutaway front view of the main part, Figure 5 is a partially cutaway side view of the main part, and Figures 6 to 9 are of each rail. Perspective view of main parts,
FIG. 10 is a front view when folded, and FIGS. 11 and 12 are explanatory views during transportation. 1... Base, 2... Free wheel, 3... Fixed wheel, 4... Support leg, 5... Receiver, 6... Side frame,
7... Vertical member, 8... Horizontal member, 10... Swing pin,
11... Locking pin, 14... Main side rail,
15...Subside rail, 20...Intermediate frame, 22
... Cross member, 23 ... Engagement pin, 24 ... Engagement hole,
25...Main center rail, 26...Sub-center rail, 31...Shelf drawer prevention device, 33...Vertical rod, 34...Main stopper plate, 35...Sub-stopper plate, 36...Top frame, 37, 38... Futsuku,
39...Shelf, 42...Intermediate frame storage space, 47...
Articles, 48...Trucks, 49...Shelf carts.

Claims (1)

[Claims] 1. A rectangular plate-shaped base with wheels at the bottom, a pair of side frames attached to both sides of this base so that they can be raised or laid down, and an intermediate frame that stands between these side frames so that it can be directly removed from the base. , side rails and center rails for supporting shelves installed in multiple levels above and below on each inner surface of both side frames and both sides of the intermediate frame, and a removable ceiling frame between the upper parts of the both side frames and the intermediate frame that are fixed upright. , a shelf fitted between opposing side rails and a center rail for supporting shelves so as to be slidable in the front and rear directions, and a stopper plate attached to vertical rods rotatably supported on the front and rear surfaces of the intermediate frame, The present invention is characterized in that it has a shelf drawer prevention device that prevents the shelf from being pulled out by rotating the stopper plate to a position facing the opening of the center rail, and an intermediate frame storage space is formed in the base. A shelf truck with sliding shelves.