JP4301601B2 - Telescopic pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a telescopic pallet for a forklift, and more particularly to a pallet that can be expanded and contracted with one or an extremely small number of types of pallets and can handle various kinds of large and small loads.
[0002]
[Prior art]
Conventionally, various pallets for forklifts have been provided, but they are usually made of a wooden plate, a steel plate, an aluminum plate, or the like.
The pallet shown in FIG. 14 to FIG. 18 is one of the typical examples of conventional steel plate pallets and has a structure in which the loading platform 1 is supported by the legs 2, and the fork of the forklift is located in the space below the loading platform 1. Inserted and lifts the pallet.
[0003]
The loading platform 1 is formed by spanning at least one reinforcing member 4 inside a rectangular frame 3. As the material of the frame 3 and the reinforcing member 4, corrugated plates 5 corrugated as shown in FIG. 17 are used, and the loading platform 1 is strengthened and reduced in weight.
[0004]
The leg portion 2 is formed by projecting four leg bodies 6 at the lower corners of the frame body 3 of the loading platform 1, and the lower surface of the leg body 6 is a connecting plate comprising the corrugated plates 5 each two. 7 are connected. As shown in FIG. 18, each leg 6 is formed by connecting a pair of opposed groove-shaped leg members 8 in a U shape with a single connecting plate 9.
[0005]
[Problems to be solved by the invention]
By the way, the size of luggage is usually not constant. Therefore, as long as the conventional pallet is used, there is a problem that a large number of pallets of various sizes according to the size of the baggage must be prepared and dealt with. Is troublesome.
An object of the present invention is to provide a pallet that can be expanded and contracted, and to solve the problems of the conventional pallet as described above.
[0006]
[Means for Solving the Problems]
To achieve the above object, retractable pallet of the present invention, the upper surface of the pair of leg members which pairs toward each other, a rectangular frame shape formed by bridging a plurality of reinforcing members to said leg member and a direction perpendicular a pallet for a forklift having a cargo bed, by forming a pre Kiho strong member telescopically, to allow expansion and contraction of the entire bed in a transverse direction, further, one end of which facing the fixed to the leg member The four fall prevention plates whose end portions are free ends are respectively provided laterally from the lower surface of the four corners of the leg member toward the opposing leg member .
[0007]
Further, it is preferable that the entire cargo bed can be expanded and contracted in the vertical direction by further forming the leg members to be extendable and contractible .
[0008]
Moreover, the upper surface of the loading platform can be made horizontal by adjusting the thickness of the fall prevention plate.
[0009]
In the pallet of the present invention, to allow expansion and contraction of the reinforcement member or the reinforcing member and the leg member, structural steel those materials, aluminum plate or the like of the metal plate, ABS resin, vinyl chloride resin, a polyamide resin It is preferable to use plastics such as polyester resin, polystyrene resin, and acrylic resin.
[0010]
[Action]
According to the pallet of the present invention, the size of the loading platform can be expanded or contracted in the horizontal direction or in the horizontal direction and the vertical direction according to the size of the luggage. Therefore, it is not necessary to prepare a large number of pallets of different sizes in accordance with the size of the package, and it is possible to handle various types of packages with one or a very small number of pallets.
[0011]
【Example】
In the following, an embodiment of the present invention will be described with reference to the drawings, but the present invention is not necessarily limited thereto.
[0012]
The pallet of a present Example has the loading platform 11 which can be expanded-contracted to the vertical direction and a horizontal direction, as shown in FIGS.
The loading platform 11 is formed by bridging a plurality of (four in the drawing) reinforcing members 13 in a direction perpendicular to the leg members 12 on the upper surfaces of a pair of leg members 12 facing each other, and having a rectangular frame shape. Is formed.
[0013]
Each leg member 12 is formed by assembling the movable part 16 to the guide part 15 of the fixed part 14 so as to be extendable and contractible. In both figures, the fixing portion 14 has a groove-shaped cross-sectional shape, and one end of a guide portion 15 that also has a groove-shaped cross-sectional shape is fixed to the inner surface of one end thereof. The other end of the guide portion 15 protrudes to the outside of the fixed portion 14, and a movable portion 16 having a groove-like cross-sectional shape is fitted on the outside of the guide portion 15 so as to be slidable in the longitudinal direction. A female screw portion 17 is formed on the upper flange of the guide portion 15, and correspondingly, a long hole 18 is formed in the upper flange of the movable portion 16, and a fastening member 19 such as a bolt or a thumbscrew is provided. Passes through the long hole 18 and is screwed into the female screw portion 17 (see FIGS. 1 and 5).
[0014]
On the other hand, each reinforcing member 13 is formed by assembling the movable portion 21 to the fixed portion 20 so as to be extendable and retractable. In both figures, the fixed portion 20 and the movable portion 21 both have a groove-shaped cross-sectional shape, one end of the fixed portion 20 is fixed to the upper surface of one leg member 12, and one end of the movable portion 21 is the other leg member. 12 is fixed to the upper surface. And the other side of the movable part 21 is slidably fitted in the other side inner surface of the fixed part 20 in the longitudinal direction. In addition, a long groove 22 is formed on the side wall of the fixed portion 20, and a female screw portion 23 is formed on the side wall of the movable portion 21 correspondingly, and a fastening member 24 such as a bolt or a thumbscrew is formed on the long groove 22. And is screwed into the female screw portion 23. Further, a stopper 25 is fixed to one end of the long groove 22 to prevent the movable portion 21 from coming off the fixed portion 20 when extended.
[0015]
Incidentally, each of the four corners a lower surface of the leg member 12, as shown in FIG. 1, four fall prevention plate 26 whose ends are the free end of which one end is facing the fixed to the leg member are opposed The pallet is laid sideways toward the leg member , and the fork of the forklift is sandwiched between the upper surface of the fall prevention plate 26 and the lower surface of the reinforcing member 13 to prevent the pallet from overturning due to the side of the load. The fall prevention plate 26 is useful for holding the upper surface of the loading platform 11 horizontally by adjusting the thickness of the plate. In addition, in order to prevent injury of a worker, it is preferable to round the tip of the fall prevention plate 26 as shown in FIG.
[0016]
The pallet having the above structure is made of a metal plate such as a steel plate or an aluminum plate, or made of a plastic such as an ABS resin, a vinyl chloride resin, a polyamide resin, a polyester resin, a polystyrene resin or an acrylic resin in order to facilitate the formation of the expansion / contraction mechanism. However, the present invention is not particularly limited thereto, and for example, a wooden one may be used.
[0017]
Next, a method for using the pallet will be described. First, the leg member 12 and / or the reinforcing member 13 of the loading platform 11 are expanded and contracted to adjust the size of the loading platform 11 to the load. In order to expand and contract the leg member 12, the fastening member 19 is loosened, the movable portion 16 is slid along the guide portion 15 in the longitudinal direction, and the overall length of the leg member 12 is set to a predetermined length. The movable part 16 and the fixed part 14 are fixed and integrated by tightening.
[0018]
In the same manner, the reinforcing member 13 can be expanded and contracted. That is, the fastening member 24 is loosened, the movable portion 21 is slid in the longitudinal direction along the fixed portion 20, and after the entire length of the reinforcing member 13 is set to a predetermined length, the fastening member 24 is tightened to The fixing part 20 may be fixed and integrated. Thereafter, the load is placed on the loading platform 11, the fork of the forklift is inserted between the lower surface of the loading platform 11 and the upper surface of the fall prevention plate 26, and the pallet is lifted to carry the load.
[0019]
When the pallet of the present invention is used, it is possible to handle large and small packages with one or a few types of pallets.
[0020]
8 to 13 show other embodiments of the expansion / contraction mechanism of the leg member 12, it goes without saying that these expansion / contraction mechanisms can also be applied to the reinforcing member 13.
[0021]
In the telescopic mechanism of the leg member 12 shown in FIGS. 8 and 9, a plurality of locking holes 27 project in a row in the upper flange of the guide portion 15 fixed to the fixed portion 14, and the movable portion 16 A locking pin 28 is attached to one end so as to be movable in the vertical direction. The locking pin 28 includes a head portion 29 and a shaft portion 30. The head 29 has a knurled outer peripheral surface and protrudes above the movable portion 16. Further, the shaft portion 30 is formed with a spring seat 31 in the middle, and the tip portion is inserted into the locking hole 27 so as to be detachable. Further, a compression spring 32 is interposed between the spring seat 31 and the movable portion 16 and urges the locking pin 28 downward via the spring seat 31.
[0022]
In order to expand and contract the leg member 12 having the expansion / contraction mechanism, the head 29 of the locking pin 28 is grasped by hand, the locking pin 28 is pulled up against the compression spring 32, and the tip of the shaft portion 30 is engaged. Pull out from the stop hole 27. Then, the movable portion 16 is slid in the longitudinal direction along the guide portion 15 as it is to set the entire length of the leg member 12 to a predetermined length, and then the hand is released from the head 29 of the locking pin 28. The compression spring 32 inserts the distal end portion of the shaft portion 30 into a predetermined new locking hole 27 by the restoring force, and fixes the movable portion 16.
[0023]
Further, in the telescopic mechanism of the leg member 12 shown in FIGS. 10 and 11, a plurality of hook-shaped locking pins 33 are erected in a row on the upper surface of the upper flange of the guide portion 15 fixed to the fixing portion 14. At the same time, a fixed lever 34 bent in a Z shape is rotatably attached to the upper surface of one end of the upper flange of the movable portion 16 via a support shaft 35. The fixing lever 34 is formed with a locking groove 36 at the tip, and is detachably engaged with the shaft portion of the locking pin 33.
[0024]
In order to expand and contract the leg member 12 having the expansion / contraction mechanism, the fixing lever 34 is rotated to release the engagement between the locking groove 36 and the locking pin 33, and the movable portion 16 is moved along the guide portion 15 as it is. After sliding in the longitudinal direction and setting the entire length of the leg member 12 to a predetermined length, the fixing lever 34 is rotated again to engage its locking groove 36 with the shaft portion of a predetermined new locking pin 33. And the movable part 16 is fixed.
[0025]
Furthermore, in the telescopic mechanism of the leg member 12 shown in FIGS. 12 and 13, a plurality of locking grooves 37 are formed at the edges of the upper and lower flanges of the guide portion 15 fixed to the fixed portion 14, and the movable portion. A fixed frame 38 is bridged over a pair of support shafts 39 on the upper and lower flanges at one end of 16. The fixed frame 38 is a frame formed by bending a spring wire into a gate shape. The ends of the leg portions 40 on both sides are swingably supported by the support shaft 39, and the central portion 41 is engaged with the guide portion 15. The retaining groove 37 is detachably engaged. A pair of tension springs 42 is interposed between the intermediate portion of the leg portion 40 and the support shaft 39 to urge the fixed frame 38 in the direction of the locking groove 37 of the guide portion 15.
[0026]
In order to expand and contract the leg member 12 having this expansion and contraction mechanism, the fixing frame 38 is raised against the tension spring 42 and the engagement between the central portion 41 and the locking groove 37 of the guide portion 15 is released. The movable part 16 is slid in the longitudinal direction along the guide part 15 as it is, and after the entire length of the leg member 12 is set to a predetermined length, the fixed frame 38 is tilted again to fix the central part 41 to a predetermined new lock. The movable portion 16 is fixed by engaging with the groove 37.
[0027]
The above embodiments have is for the longitudinal and transverse directions stretchable pallet, can be applied in the same manner as above for the pallet which enables stretch only reinforcement member.
[0028]
【The invention's effect】
According to the present invention, since the reinforcement member or the reinforcing member and the leg members that make up the bed of a pallet and telescopically formed, it expands and contracts in the horizontal direction or the transverse and longitudinal directions combined total bed size luggage be able to. Therefore, it is possible to deal with large and small packages with one or a small number of pallets without increasing the size of the pallet, which is convenient and economical.
[0029]
Further, four fall prevention plates, one end of which is fixed to the leg member and the end opposite to the leg member is a free end, are laterally arranged from the lower surface of the four corners of the leg member toward the opposing leg member. Therefore, it is possible to sandwich the forks of a forklift between the reinforcing member lower surface of the fall prevention plate top surface and the loading platform, it is possible to prevent a fall of the pallet by offset luggage, safe.
In addition, it is possible to keep the upper surface of a loading platform horizontal by adjusting the thickness of the fall prevention plate.
[Brief description of the drawings]
FIG. 1 is a plan view of a pallet that can be expanded and contracted according to an embodiment of the present invention.
FIG. 2 is a front view of FIG.
FIG. 3 is a right side view of FIG. 1;
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG. 4;
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is an enlarged sectional view taken along line VII-VII in FIG.
FIG. 8 is an enlarged view showing a main part of another embodiment of the leg member telescopic mechanism according to the present invention.
9 is a plan view of FIG. 8. FIG.
FIG. 10 is an enlarged view of a main part showing still another embodiment of the leg member expansion / contraction mechanism according to the present invention.
FIG. 11 is a plan view of FIG. 10;
FIG. 12 is a main part enlarged view showing still another embodiment of the leg member expansion and contraction mechanism according to the present invention.
FIG. 13 is a plan view of FIG.
FIG. 14 is a plan view showing an example of a conventional pallet.
FIG. 15 is a plan view of FIG. 14;
16 is a right side view of FIG.
FIG. 17 is an enlarged cross-sectional view of a corrugated plate used as a material for a conventional pallet.
18 is an enlarged sectional view taken along line XVIII-XVIII in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cargo part 2 Leg part 3 Frame body 4 Reinforcement member 5 Corrugated board 6 Leg body 7 Connection board 8 Leg member 9 Connection board 11 Cargo bed 12 Leg member 13 Reinforcement member 14 Fixed part 15 Guide part 16 Movable part 17 Female thread part 18 Long hole DESCRIPTION OF SYMBOLS 19 Fastening member 20 Fixed part 21 Movable part 22 Long groove 23 Female thread part 24 Fastening member 25 Stopper 26 Fall prevention plate 27 Locking hole 28 Locking pin 29 Head part 30 Shaft part 31 Spring seat 32 Compression spring 33 Locking pin 34 Fixing lever 35 Support shaft 36 Locking groove 37 Locking groove 38 Fixed frame 39 Support shaft 40 Leg portion 41 Center portion 42 Tension spring

Claims (3)

The upper surface of the pair of leg members which pairs toward each other, a pallet forklift having a rectangular frame-shaped loading platform formed by bridging a plurality of reinforcing members in said leg member perpendicular direction, the front Kiho strong member By forming it so that it can be expanded and contracted, the entire cargo bed can be expanded and contracted in the lateral direction, and further, four fall prevention plates each having one end fixed to the leg member and the end facing the free end are respectively free ends. An expandable / contractible pallet, wherein the pallet is provided horizontally from the lower surface of the four corners of the leg member toward the opposing leg member . The extendable / retractable pallet according to claim 1 , wherein the leg member is formed to be extendable and contractible so that the entire bed can be extended and contracted in the vertical direction . By adjusting the thickness of the anti-tip plate, extendable pallet as claimed in claim 1, the loading platform of the upper surface was set to horizontal.

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