JPH0311939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention has a plurality of upper and lower shelves, and the articles placed on these shelves are moved on the floor or 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 Conventionally, as seen in Utility Model Application No. 74128 of 1982, for example, 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 a plurality of upper and lower guide rails are attached to the opposing inner surfaces of the pillars and vertical bars, 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 may be pulled out unexpectedly due to vibrations during running on the floor or transporting by truck, which not only prevents smooth and safe running 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. , shelf support rails installed in multiple stages above and below on opposing surfaces of these side frames, a removable top frame between the upper parts of both side frames that are fixed upright, and a shelf that slides in the front and back direction between the opposing shelf support rails. Elongated holes are attached to the front and rear surfaces of the shelf and the top frame by loosely fitting them into pins projecting sideways from the top frame. The stopper member is movable up and down through an elongated hole and has a free end that can be fitted into and removed from the base from above.

Embodiment and Operation An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 to 7, reference numeral 1 denotes a rectangular plate-shaped and frame-like base, on which a pair of front and rear free wheels 2 are attached to the lower part of one side, and a pair of front and rear fixed wheels 3 to the lower part of the other side. 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. A swing pin 10 is provided protruding from the lower ends of the front and rear surfaces of both vertical members 7, and a locking pin 11 is provided at a position slightly above this.
is installed 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 13 in which the locking pin 11 can be freely engaged and detached from above;
is formed. A plurality of upper and lower shelf support rails 14 in the front and back direction are installed at predetermined intervals on opposing surfaces of the both side frames 6, and the shelf support rails 14
Shelf support auxiliary rails 15 are installed between the two. The shelf support rail 14 basically has a C-shaped cross section, and has cutout portions 16 formed in the upper flanges at the front and rear ends, and stop portions 16 formed in the lower flanges at the front and rear ends. Convex portion 17
are integrally formed. Furthermore, a stopper piece 18 that projects inward is integrally formed at the location of the convex portion 17. The shelf support auxiliary rail 15 also has a cross section C.
Although it is shaped like a square, there is no cutout, and a convex portion 19 for a stop is integrally formed on the lower flange at the front and rear ends. Reference numeral 20 denotes a top frame which can be attached and detached between the upper parts of both side frames 6 fixed upright, and has hooks 21 at both ends thereof which can be attached and detached from above to the horizontal member 8. A rod-shaped stopper member 22 is attached to the front and rear surfaces of the top frame 20 so as to be able to swing vertically. That is, a pin 23 is provided protruding from the front and rear surfaces at a position closer to one of the sides, and a flange 23 is attached to the base end of the stopper member 22.
4 is formed with a long hole 25 in the length direction, and the pin 23 is fitted into this long hole 25. Further, the free end of the stopper member 22 is formed into a pin portion 26, and a vertical hole 27 is formed in the base 1, into which the pin portion 26 can be inserted and removed from above. Further, a locking tool 28 for holding the upwardly moved stopper member 22 in a horizontal state is attached at a position near the side opposite to the pin 23. A shelf 29 is fitted between the opposing shelf support rails 14 so as to be slidable in the front and rear directions. This shelf 29 has the shape of a rectangular flat plate framework, and bearings (rollers) 30 supported and guided by the shelf support rails 14 are attached to both sides of the shelf 29, and at the bottom of both sides at the center in the front-rear direction,
A stopper piece 3 that can freely come into contact with the stopper piece 18
1 is installed. A middle part of a cover 32 is fixed 33 to the upper surface of the ceiling frame 20, and this cover 32
is long enough to cover both the front and rear surfaces,
Further, both free ends 32A can be fixed to the base 1 with, for example, magic tape. 34 is base 1
35 is a band, and 36 is an article.

Next, the operation of the above embodiment will be explained. 1 to 3 show a state in which articles 36 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, a top frame 20 is attached between the horizontal members 8 via hooks 21. Furthermore, each shelf support rail 1
Shelves 29 are fitted between the four, and articles 36 are placed on these shelves 29. Then, the stopper member 22 is moved downward, and at that time, the long hole 25 is used to make the pin part 2
6 is lowered linearly and engaged with the vertical hole 27. Further, the front and rear surfaces are covered with a cover 32. In this state, it can run freely on the floor, and can be transported by loading it onto a truck 37 as shown in FIG. This loading is carried out stably in multiple stages by fitting the upper tray 5 onto the upper end of the lower vertical member 7 from above.
Shelf 29 protects against vibrations during driving and transportation.
Since the stopper member 22 faces the front and rear surfaces of the shelf 29, it is possible to prevent the shelf 29 from being pulled out unexpectedly. When taking out the article 36,
First, the cover 32 is raised and folded onto the top frame 20, and the stopper member 22 is moved upward to be horizontally locked to the locking tool 28 as shown by the phantom line in FIG. Next, the shelf 29 is pulled out as shown by the solid line or the imaginary line at the bottom of FIG.
6 is taken out. This drawing is continued until the stopped piece 31 comes into contact with the stopper piece 18, and in an unexpected situation where another shelf 29 is pulled out due to vibration during drawing, the bearing 30 comes into contact with the protrusion 17. It is circulated by this. Note that the article 36 is loaded in the same manner. The shelf cart 3 becomes empty after all the articles 36 are taken out.
8 is transported (returned) by truck 37.
To carry out this transportation, the following operations are performed using two shelf carts 38 as one set. That is, all the shelves 29 are pulled out from one shelf carriage 38, and these shelves 29 are fitted between the shelf support auxiliary rails 15 on the other shelf carriage 38, as shown by phantom lines in FIG. In the other shelf truck 38, the stopper member 22 is set at the operating position, and the front and rear surfaces are covered with a cover 32. In one of the shelf carts 38 from which the shelves 29 have been removed, the top frame 20 is first removed, and then, as shown in FIG. 8, the 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 20 on top of the folded side frame 6.
is placed with the cover 32 and the band 35
Tightening is performed by Transportation (return) is the first
As shown in Figure 0, the other shelf truck 38 is transported in the same manner as in actual transportation;
8 can be folded to reduce its bulk, so it can be stacked in a large amount. Here the actual transportation (9th
When the number of empty transports (Fig. 10) and empty transports (Fig. 10) are the same, a loadable space A shown in Fig. 10 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 stopper member attached to the base and the top frame is located opposite the front and rear surfaces of the shelf, the shelf is not pulled out unexpectedly due to vibrations generated during traveling or transportation. can be reliably prevented. Furthermore, after taking out the items, by pulling out the shelf of one shelf truck and assembling it into the other shelf truck, the one shelf truck can be folded with both side frames on the base and a top frame placed on top of it. Therefore, empty transportation (return) can be carried out efficiently with half the volume reduced, that is, with a larger number of shipments per time than during actual transportation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view when the article is stored, FIG. 2 is a partially cutaway side view of the same,
Fig. 3 is a cutaway plan view of the same part, Fig. 4 is a front view of the main part, Fig. 5 is a side view of the main part, Fig. 6 and Fig. 7 are plan views of the main part in Fig. 5; FIG. 8 is a front view when folded, and FIGS. 9 and 10 are explanatory views during transportation. 1... Base, 2... Free wheel, 3... Fixed wheel, 4... Support leg, 5... Receiver, 6... Side frame,
7... Vertical member, 10... Swinging pin, 11... Locking pin, 12... Guide groove, 13... Positioning recess, 14... Shelf support rail, 15... Shelf support auxiliary rail, 20... ...Top frame, 21...Hook, 22...
... Stopper member, 23 ... Pin, 25 ... Long hole,
28...Locking tool, 29...Shelf, 30...Bearing, 32...Cover, 36...Article, 37...Truck, 38...Shelf cart.

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 and laid down, and shelf supports attached in multiple levels above and below to the opposite sides of these side frames. A removable top frame between the rail and the upper portions of both side frames fixed upright, a shelf fitted so as to be slidable in the front and back direction between the opposing shelf support rails, and a shelf from the top frame to the front and rear surfaces of the top frame. A long hole is loosely fitted into a pin protruding from the side, and the pin is swingable around the pin, and is also vertically movable due to the long hole, and the free end is connected to the base from above. 1. A shelf truck having a sliding shelf, characterized in that it is composed of a stopper member that can be freely fitted and removed.