CA1078310A - Nestable roller pallet - Google Patents
Nestable roller palletInfo
- Publication number
- CA1078310A CA1078310A CA287,041A CA287041A CA1078310A CA 1078310 A CA1078310 A CA 1078310A CA 287041 A CA287041 A CA 287041A CA 1078310 A CA1078310 A CA 1078310A
- Authority
- CA
- Canada
- Prior art keywords
- pallet
- sides
- deck
- guide
- pallet deck
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/14—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys
- B62B3/18—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys nestable by means of pivoted supports or support parts, e.g. baskets
- B62B3/184—Nestable roll containers
- B62B3/186—V-shaped when nested
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/003—Hand-propelled vehicles or sledges being foldable or dismountable when not in use with actuation mechanisms which drive the folding or unfolding operation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Pallets (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Press Drives And Press Lines (AREA)
- Handcart (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides a nestable load pallet or roller pallet comprising two opposed pallet sides which are connected to each other at one of their vertical edges, and at least one pallet deck which is mounted between the said pallet sides and which can be rotated in a vertical plane about an axis extending between the two pallet sides whereby the pallet deck in a first fold down position forms a load supporting plane engaging parts of the pallet sides and in a second fold up position the pallet deck takes a substantially vertical position adjacent the said one edge of the pallet sides, the pallet sides being rotatably mounted in a vertical plane in relation to the pallet deck and the pallet sides and the pallet deck being formed with co-operating means for automatically and positively forcing the pallet sides out a predetermined distance when folding the pallet deck up and automatically and positively forcing the pallet sides in to their initial positions when folding the pallet deck down.
The present invention provides a nestable load pallet or roller pallet comprising two opposed pallet sides which are connected to each other at one of their vertical edges, and at least one pallet deck which is mounted between the said pallet sides and which can be rotated in a vertical plane about an axis extending between the two pallet sides whereby the pallet deck in a first fold down position forms a load supporting plane engaging parts of the pallet sides and in a second fold up position the pallet deck takes a substantially vertical position adjacent the said one edge of the pallet sides, the pallet sides being rotatably mounted in a vertical plane in relation to the pallet deck and the pallet sides and the pallet deck being formed with co-operating means for automatically and positively forcing the pallet sides out a predetermined distance when folding the pallet deck up and automatically and positively forcing the pallet sides in to their initial positions when folding the pallet deck down.
Description
: ~078~o , ,.
The present invention relates to a nestable load pallet or roller pallet comprising two opposed pallet sides, which a~e connected to each other at one of their vertical edges, and at least one pallet deck which is mounted between the said sides and which can be rotated in a vertical plane substantially parallel to the two pallet sides, whereby the pallet deck in its fold down position acts as a load supporting plane bearing on the pallet sides, whereas the pallet deck in its fold up position takes a substantially vertical position adjacent the said one edge ofthe pallet sides;
The present invention provides load pallets or a roller pallets of the type which when being transported or stored etc.
in emptied state in part can be nested into each other so as to occupy an optimum little floor area.
The invention also provides a load pallet or roller pallet which is very flexible and can be used for many different purposes either completely open between the two pallet sides or wearing a gate on one or both said sides and formed as a closed unit having a lid, one or several supporting planes and two, three or four sides.
For modern material handling great demands are made on a load pallet or roller pallet. In order to simplify the handling and facilitate the work for the operating personnel the pallet should take up little space, should be easy to bring into its nestable state, should be simple and easy to raise the deck to its vertical position and to bring the pallet sides to a position in which they are folded out from each other, and should be easy to make ready for being loaded and transported.
Load pallets are known in which the pallet deck can be folded up to a substantially vertical position and in which two opposed pallet sides can be folded out so that several pallets can be partly nested into each other. Some of the said - . . , ~. . : . .
10783~0 ., known load pallets are disadvantageous in that the pallet sides have to be folded out by hand at the same time as the pallet deck is folded up, what often requires two men. In order to solve this problem it has been suggested that the pallet deck is provided with a cam means which actuates the pallet sides when folding the pallet deck upwards so that the pallet sides are folded out at the same time as the pallet deck is folded up. The pallet sides can be formed with stop means which prevent folding outwards too far. When making the load pallet ready for loading and transport the pallet sides in this embodiment however have to be pulled together by hand at the same time as the pallet deck is folded down, and this likewise often needs two men. A
further disadvantage in the known pallets is that the pallet deck has to be secured in its folded up position by means of a separate locking means in order to preventthe pallet deck from falling down again especially since a non-intentional folding down of the pallet deck can hurt the operating personnel. This locking means involves a further undesirable work. Known load pallets of thé above mentioned type are further formed so that the pallet sides are connected to each other at one of their vertical edges by means of an intermediate rear wall and the said load pallets having at least three sides are not suited for handling of goods which are longer than the pallet sides.
The present invention provides a load pallet or roller pallet of the above mentioned type in which both the foldin~
out of the pallet sides when folding the pallet deck upwards and the folding in of the pallet sides to their initial position when folding the pallet deck down is automatic when actuating the pallet deck, in which the pallet deck by a simple movement of the hand and without the need of any separate means is locked in its folded up position, in which the load pallet is formed so that it can both be used in an open state having only two opposed pallet sides and formed with three sides or four sides and having one or several pallet decks and formed with or without top side or lid.
According to the present invention there is provided a nestable load pallet or roller pallet comprising two opposed pa~let sides which are connected to each other at one of their vertical edges, and at least one pallet deck which is mounted between the said pallet sides and which can be rotated in a vertical plane about an axis extending between the two pallet sides, whereby the pallet deck in a first fold down position forms a load supporting plane engaging parts of the pallet sides and in a second fold up position the pallet deck takes a substantially vertical position adjacent the said one edge of the pallet sides the pallet sides being ro atably mountéd in a vertical plane in relation to the pallet deck and the pallet sides and the pallet deck being formed with co-operating means for automatically and positively forcing the pallet sides out a predetermined distance when folding the pallet deck up and automatically and positively forcing the pallet sides in to their initial positions when 20 folding the pallet deck down. The present invention will be further illustrated by way of the accompanying drawings in which, Fig. 1 is an embodiment of a roller pallet in accordance with the invention and Fig. 2 is a cross-section along the line II-II of Figure 1.
Fig. 3 shows the pallet according to Figures 1 and 2 seen from above and in position for handling of material and Fig. 4 shows three roller pallets in collapsed state and partly nested into each other.
Fig. 5 shows the structural composition of the main parts of a roller pallet according to the invention.
`` ~078310 Fig. 6 fragmentary shows a part of the invention and Fig. 7 is a cross-section along line VII-VII of Figure 6.
- The roller pallet shown in Figures 1 through 7 generally ~-comprises the following main parts: Two pallet sides 1 and 2, a connection bar 3 for the two pallet sides and a pallet deck 4.
The pallet sides 1 and 2 are mirror symmetrical and they both comprise an inverse U-formed frame 5 which at the lower part thereof is closed by a horizontal bar 6 and which in the conventional way can be formed as a lattice 7. At one edge called the inner edge the pallet sides 1 and 2 are rotatably connected to the connection bar 3 and the inner branch 8 of the U-formed frame 5 is for this purpose cut some distance from the lower edge of the side and the said cut part of the frame is extended by a hinge pin 9 having a diameter which is less than the diameter of the frame tubes. The hinge pin 9 is at the lower end mounted in a connection ring 10. At the outer lower edge each ~ .
~` pallet side carries a caster roller lla which is rotatable about a vertical pin. The caster roller lla is mounted on an inwardly ~ ;
directed support plate 12 which is fixedly mounted on the pallet side and which forms a supporting plate for the pallet deck 4 in the folded down position thereof. The support plate 12 has a through bore 13 adapted to co-operate with a downwards directed pin 14 in the pallet deck 4.
The connection bar 3 consists of a central solid bar 15 carrying at the outer end two vertically mountedhinge tubes 16 the vertical length of which corresponds to the distance between the connection ring 10 of the pallet side and the cut lower edge . of the inner branch 8 of the U-frame 5. The bore of the hinge tube 16 corresponds to the diameter of the hinge pin 9 and in mounted condition the branch 8, the hinge pin 9, the connection ring 10 and the hinge tube 16 provides a hinge joint by which the .. . .
1~)783~0 pallet side is both supported and rotatable in relation to the connection bar 3. Adjacent the ends the connection bar 3 carries rollers llb which are preferably fixed mounted. Some distance from each end the central bar 15 has horizontally extending eyelets 17 adapted to provide a pivot connection for the pallet deck in relation to the connection bar 3 together with eyeIets 18 of the pallet deck 4.
The pallet deck 4 is made of two longitudinal bars 19 to which cross boards 20 or similar are screwed. At the inner end of the pallet deck the above mentioned eyelets 18 are mounted and at the outer end each bar 19 carries the above ., mentioned pin 14 for co-operation with the bore 13 in the support plate 12 of the pallet side.
It is appreciated that the central part of the above described roller pallet is formed by the connection bar 3 and the two pallet sides 1 and 2 are rotatably mounted on said bar.
By providing the bar 15 and the hinge tubes 16 i~tegral it is possible to make the connection bar as a complete relatively low, and the bar 15 is preferably formed with such dimensions that the upper side thereof is on the same level as the upper side of the pallet deck. Since the connection bar 3 in the above mentioned way carries the two pallet sides 1 and 2 the roller pallet can preferably be used with two open sides so as to be suited for handling of pieces of goods which are longer than the pallet side but it can also if needed be equipped with one or more pallet gates connecting the free ends of the apllet sides 1 and 2, or it can be equipped with a lid mounted between the upper edges of the pallet sides 1 and 2.
In order to facilitate the handling the load pallet or roller pallet is according to the inyention provided with means for automatically and positively forcing the pallet sides - outwardly when the pallet deck is lifted and to automatically and .' ~ -- 5 ~ ~ r :; ' . - . ; .,: .,. ` ~.: ;: .. . . :.
positively force the pallet sides back again when the pallet deck is folded down and to secure the pallet deck in its folded up position in order to prevent the pallet deck from unintentionally dropping down. The means comprises a guiding means for each pallet side mounted on the pallet deck and a guided means mounted on the pallet sides, and the said guiding means is formed as a portion of a screw spiral the center of which coincldes with the pivot axis for the pallet deck. The guiding and the guided means can be formed in several different ways but in the illustrated - 10 embodiment the guiding means is formed as a guide hook 21 which is mountedin the longitudinal bar 19 of the pallet deck and extends outwardly therefrom. Some distance from the outer edge the said guide hook is formed with a guide slot 22 opening towards the connection bar. For co-operation with the guide hook 21 a screw path in the form of a bevelled or spiral formed plate 23 is mounted in the corner which is formed between the inner branch 8 of the pallet side and the horizontal bar 6. As mentioned above the center of the said spiral or screw path coincides with the pivot axis for the pallet deck 4 at the connection bar 3. The radius of the screw path also corresponds with the distance between the pivot axis of the pallet deck and the inner edge of the guide slot 22.
The pallet deck 4 is rotatable at the connection bar 3 in that the two eyelets 17 and 18 are formed with bores and the pivot shaft is formed by a rivet 24, a bolt or similar. To secure a pallet deck in its folded up position thebore 25 of the eyelet 18 of thepallet deck is oval in the plane of the pallet deck so that the edge of the bore 25 facing the connection bar 3 forms a pivot edge for the pallet deck. At the upper edge the guide plate 23 is formed with a slot 26 of substantially the same width as the gauge of the guide hook 21, and when the pallet deck is in its folded up position it can be lowered so that the ., .
.. .. . . ..
guide hook 21 with the slot 22 engages the slot 26 of the guide plate 23. The lowering of the pallet deck ls possible since the bore 25 of the eyelet 18 is oval, and in the lowered position the pallet deck is locked against rotating movement in any direction.
Depending on the inclination of the guide curve of the guide plate 23 the pallet sides can be folded out differently far and by changing the form or direction of the guide curve special movements can be given to the pallet sides for different purposes.
It is essential for the invention that the pallet sides are automatically and positively guided in their movements both in the direction outwardly and inwardly since thereby the pallet can be handled only by actuation of the pallet deck, that is, in one direction only by folding the pallet deck up, whereby thepallet deck at the end of the said movement automatically sinks down and provides the above described locking action and in the opposite direction by slightly lifting the pallet deck up whereupon the pallet deck by the gravity is caused to fall down thereby taking a transport position and in the first mentioned case the sides are automatically fold out to nestable or "compressing" position and in the latter case the pallet sides are automatically fold in to a load position. Since the pallet sides thus automatically are foled in to the load position and since the guide pins 14 o the pallet deck 4 in this position engage the guide bores 13 in the support plates 12 of the pallet sides the pallet can be caused to take its load position in the simpliest possible way, if needed even by having the pallet deck 4 drop down by itself.
In order to provide a safe guide of the guide pins 14 the support plates 12 may be formed with guide tubes at the underside thereof.
,., , Preferably the pln 14 is chamfered at the outer edge and the bore 13 of the support plate 12 is correspondingly chamfered so that the pin 14 is guided when entering the said bore 13. Preferably the inner diameter of the guide tube is slightly larger than that diameter of the pin 14 and the guide tube can be tilted in one direction, viz. in a direction perpendicular to the pallet sides 1 and 2, so that the two guide tubes are directed obliquely down towards each other.
Thereby the guide pins 14 will at least partly slide along the outer edges of the guide tubes during their movement downwards whereas they provide a stiff connection in their fully fold down position between the pallet deck and the pallet side.
The above described two sided roller pallet can in addition to the pallet deck 4 be provided with two further supporting planes which are preferably hinge connected to the ; pallet sides 1 and 2, and when transforming the pallet to its nestable or compressed position a lower one of the support planes is fold up along the pallet side 1 and an upper support plane is fold down along the pallet side 2 so as to not to prevent a second pallet to be introduced between the sides 1 and 2.
A pallet according to the invention may also have a rear wall 29 and it may upon need also be provided with a gate whereby the rear wall and the gate are in a way known per se mounted on the pallet sides 1 and 2. The rear wall 29 when nesting the pallet, can be left mounted between the pallet sides whereas the gate is rotated outwards or inwards to contact one of the pallet sides.
In Figure 4 is illustrated how the roller pallet according to Figure 2 can be made nestable or compressed. For this purpose the pallet deck 4 is foled up as previously mentioned, ; whereby the pallet sides 1 and 2 are folded out. Into the roller pallet thus made nestable a further roller pallet can be -. . .
.. . .
10~8310 introduced as illustrated in Figure 4.
In order to make it possible to partly introduce ~oller pallets into each other as illustrated in Figure 4 t,he horiæontal bars 6 of the sides 1 and 2 has to extend on a higher level than the support plates 12, and in Figure 5 is illustrated an embodiment for providing different levels of the horizontal bar 6 and the guide plate 12. The bar 6 is angularly bent down adjacent the outer edge of the pallet side. There may alterna-tively be a spacer between the guide plate 12 and the horizontal bar 6.
The hinge joint between the connection bar 3 and the pallet sides 1 and 2 is best illustrated in Figures 6 and 7.
In the Figures the horizontal bar 6 and the guide plate 23 are welded t,o a connection means in the form of a U-bracket having two branches lOa and lOb and an intermediate web portion lOc, whereby the branches lOa and lOb are formed with bores for the , hinge pin 9. The connection bar 3 is formed with a hinge tube 16 provided between the branches lOa and lOb and hinge connected thereto by means of the hinge pin 9.
It is to be understood that the embodiments of the invention described above and illustrated in the drawings are only illustrating examples and that all kinds of modifications may be effecte'd. Especially it is obvious how the above described guide means for olding the pallet side out and in can be modified for instance by mounting a screw shaft in the pallet deck and that the pallet sides are formed with a corresponding " nut having large inclination, or that the screw curve is provided ' on the pallet deck rather than on the pallet sides whereas the .
; corresponding means of the pallet sides are formed as a guide , , ~'` 30 extending parallelly with the pallet side. Considering the .,. successively increased torque when folding the pallet deck ' upwards it is also obvious to the expert that the screw curve i-` 1(~78310 can be formed with a large inclination in the area opposed the pivot point and thereafter a successively decreased inclination or in any other suitable way.
:
~ 30 ~' ;' ,. ,. : . ~;
The present invention relates to a nestable load pallet or roller pallet comprising two opposed pallet sides, which a~e connected to each other at one of their vertical edges, and at least one pallet deck which is mounted between the said sides and which can be rotated in a vertical plane substantially parallel to the two pallet sides, whereby the pallet deck in its fold down position acts as a load supporting plane bearing on the pallet sides, whereas the pallet deck in its fold up position takes a substantially vertical position adjacent the said one edge ofthe pallet sides;
The present invention provides load pallets or a roller pallets of the type which when being transported or stored etc.
in emptied state in part can be nested into each other so as to occupy an optimum little floor area.
The invention also provides a load pallet or roller pallet which is very flexible and can be used for many different purposes either completely open between the two pallet sides or wearing a gate on one or both said sides and formed as a closed unit having a lid, one or several supporting planes and two, three or four sides.
For modern material handling great demands are made on a load pallet or roller pallet. In order to simplify the handling and facilitate the work for the operating personnel the pallet should take up little space, should be easy to bring into its nestable state, should be simple and easy to raise the deck to its vertical position and to bring the pallet sides to a position in which they are folded out from each other, and should be easy to make ready for being loaded and transported.
Load pallets are known in which the pallet deck can be folded up to a substantially vertical position and in which two opposed pallet sides can be folded out so that several pallets can be partly nested into each other. Some of the said - . . , ~. . : . .
10783~0 ., known load pallets are disadvantageous in that the pallet sides have to be folded out by hand at the same time as the pallet deck is folded up, what often requires two men. In order to solve this problem it has been suggested that the pallet deck is provided with a cam means which actuates the pallet sides when folding the pallet deck upwards so that the pallet sides are folded out at the same time as the pallet deck is folded up. The pallet sides can be formed with stop means which prevent folding outwards too far. When making the load pallet ready for loading and transport the pallet sides in this embodiment however have to be pulled together by hand at the same time as the pallet deck is folded down, and this likewise often needs two men. A
further disadvantage in the known pallets is that the pallet deck has to be secured in its folded up position by means of a separate locking means in order to preventthe pallet deck from falling down again especially since a non-intentional folding down of the pallet deck can hurt the operating personnel. This locking means involves a further undesirable work. Known load pallets of thé above mentioned type are further formed so that the pallet sides are connected to each other at one of their vertical edges by means of an intermediate rear wall and the said load pallets having at least three sides are not suited for handling of goods which are longer than the pallet sides.
The present invention provides a load pallet or roller pallet of the above mentioned type in which both the foldin~
out of the pallet sides when folding the pallet deck upwards and the folding in of the pallet sides to their initial position when folding the pallet deck down is automatic when actuating the pallet deck, in which the pallet deck by a simple movement of the hand and without the need of any separate means is locked in its folded up position, in which the load pallet is formed so that it can both be used in an open state having only two opposed pallet sides and formed with three sides or four sides and having one or several pallet decks and formed with or without top side or lid.
According to the present invention there is provided a nestable load pallet or roller pallet comprising two opposed pa~let sides which are connected to each other at one of their vertical edges, and at least one pallet deck which is mounted between the said pallet sides and which can be rotated in a vertical plane about an axis extending between the two pallet sides, whereby the pallet deck in a first fold down position forms a load supporting plane engaging parts of the pallet sides and in a second fold up position the pallet deck takes a substantially vertical position adjacent the said one edge of the pallet sides the pallet sides being ro atably mountéd in a vertical plane in relation to the pallet deck and the pallet sides and the pallet deck being formed with co-operating means for automatically and positively forcing the pallet sides out a predetermined distance when folding the pallet deck up and automatically and positively forcing the pallet sides in to their initial positions when 20 folding the pallet deck down. The present invention will be further illustrated by way of the accompanying drawings in which, Fig. 1 is an embodiment of a roller pallet in accordance with the invention and Fig. 2 is a cross-section along the line II-II of Figure 1.
Fig. 3 shows the pallet according to Figures 1 and 2 seen from above and in position for handling of material and Fig. 4 shows three roller pallets in collapsed state and partly nested into each other.
Fig. 5 shows the structural composition of the main parts of a roller pallet according to the invention.
`` ~078310 Fig. 6 fragmentary shows a part of the invention and Fig. 7 is a cross-section along line VII-VII of Figure 6.
- The roller pallet shown in Figures 1 through 7 generally ~-comprises the following main parts: Two pallet sides 1 and 2, a connection bar 3 for the two pallet sides and a pallet deck 4.
The pallet sides 1 and 2 are mirror symmetrical and they both comprise an inverse U-formed frame 5 which at the lower part thereof is closed by a horizontal bar 6 and which in the conventional way can be formed as a lattice 7. At one edge called the inner edge the pallet sides 1 and 2 are rotatably connected to the connection bar 3 and the inner branch 8 of the U-formed frame 5 is for this purpose cut some distance from the lower edge of the side and the said cut part of the frame is extended by a hinge pin 9 having a diameter which is less than the diameter of the frame tubes. The hinge pin 9 is at the lower end mounted in a connection ring 10. At the outer lower edge each ~ .
~` pallet side carries a caster roller lla which is rotatable about a vertical pin. The caster roller lla is mounted on an inwardly ~ ;
directed support plate 12 which is fixedly mounted on the pallet side and which forms a supporting plate for the pallet deck 4 in the folded down position thereof. The support plate 12 has a through bore 13 adapted to co-operate with a downwards directed pin 14 in the pallet deck 4.
The connection bar 3 consists of a central solid bar 15 carrying at the outer end two vertically mountedhinge tubes 16 the vertical length of which corresponds to the distance between the connection ring 10 of the pallet side and the cut lower edge . of the inner branch 8 of the U-frame 5. The bore of the hinge tube 16 corresponds to the diameter of the hinge pin 9 and in mounted condition the branch 8, the hinge pin 9, the connection ring 10 and the hinge tube 16 provides a hinge joint by which the .. . .
1~)783~0 pallet side is both supported and rotatable in relation to the connection bar 3. Adjacent the ends the connection bar 3 carries rollers llb which are preferably fixed mounted. Some distance from each end the central bar 15 has horizontally extending eyelets 17 adapted to provide a pivot connection for the pallet deck in relation to the connection bar 3 together with eyeIets 18 of the pallet deck 4.
The pallet deck 4 is made of two longitudinal bars 19 to which cross boards 20 or similar are screwed. At the inner end of the pallet deck the above mentioned eyelets 18 are mounted and at the outer end each bar 19 carries the above ., mentioned pin 14 for co-operation with the bore 13 in the support plate 12 of the pallet side.
It is appreciated that the central part of the above described roller pallet is formed by the connection bar 3 and the two pallet sides 1 and 2 are rotatably mounted on said bar.
By providing the bar 15 and the hinge tubes 16 i~tegral it is possible to make the connection bar as a complete relatively low, and the bar 15 is preferably formed with such dimensions that the upper side thereof is on the same level as the upper side of the pallet deck. Since the connection bar 3 in the above mentioned way carries the two pallet sides 1 and 2 the roller pallet can preferably be used with two open sides so as to be suited for handling of pieces of goods which are longer than the pallet side but it can also if needed be equipped with one or more pallet gates connecting the free ends of the apllet sides 1 and 2, or it can be equipped with a lid mounted between the upper edges of the pallet sides 1 and 2.
In order to facilitate the handling the load pallet or roller pallet is according to the inyention provided with means for automatically and positively forcing the pallet sides - outwardly when the pallet deck is lifted and to automatically and .' ~ -- 5 ~ ~ r :; ' . - . ; .,: .,. ` ~.: ;: .. . . :.
positively force the pallet sides back again when the pallet deck is folded down and to secure the pallet deck in its folded up position in order to prevent the pallet deck from unintentionally dropping down. The means comprises a guiding means for each pallet side mounted on the pallet deck and a guided means mounted on the pallet sides, and the said guiding means is formed as a portion of a screw spiral the center of which coincldes with the pivot axis for the pallet deck. The guiding and the guided means can be formed in several different ways but in the illustrated - 10 embodiment the guiding means is formed as a guide hook 21 which is mountedin the longitudinal bar 19 of the pallet deck and extends outwardly therefrom. Some distance from the outer edge the said guide hook is formed with a guide slot 22 opening towards the connection bar. For co-operation with the guide hook 21 a screw path in the form of a bevelled or spiral formed plate 23 is mounted in the corner which is formed between the inner branch 8 of the pallet side and the horizontal bar 6. As mentioned above the center of the said spiral or screw path coincides with the pivot axis for the pallet deck 4 at the connection bar 3. The radius of the screw path also corresponds with the distance between the pivot axis of the pallet deck and the inner edge of the guide slot 22.
The pallet deck 4 is rotatable at the connection bar 3 in that the two eyelets 17 and 18 are formed with bores and the pivot shaft is formed by a rivet 24, a bolt or similar. To secure a pallet deck in its folded up position thebore 25 of the eyelet 18 of thepallet deck is oval in the plane of the pallet deck so that the edge of the bore 25 facing the connection bar 3 forms a pivot edge for the pallet deck. At the upper edge the guide plate 23 is formed with a slot 26 of substantially the same width as the gauge of the guide hook 21, and when the pallet deck is in its folded up position it can be lowered so that the ., .
.. .. . . ..
guide hook 21 with the slot 22 engages the slot 26 of the guide plate 23. The lowering of the pallet deck ls possible since the bore 25 of the eyelet 18 is oval, and in the lowered position the pallet deck is locked against rotating movement in any direction.
Depending on the inclination of the guide curve of the guide plate 23 the pallet sides can be folded out differently far and by changing the form or direction of the guide curve special movements can be given to the pallet sides for different purposes.
It is essential for the invention that the pallet sides are automatically and positively guided in their movements both in the direction outwardly and inwardly since thereby the pallet can be handled only by actuation of the pallet deck, that is, in one direction only by folding the pallet deck up, whereby thepallet deck at the end of the said movement automatically sinks down and provides the above described locking action and in the opposite direction by slightly lifting the pallet deck up whereupon the pallet deck by the gravity is caused to fall down thereby taking a transport position and in the first mentioned case the sides are automatically fold out to nestable or "compressing" position and in the latter case the pallet sides are automatically fold in to a load position. Since the pallet sides thus automatically are foled in to the load position and since the guide pins 14 o the pallet deck 4 in this position engage the guide bores 13 in the support plates 12 of the pallet sides the pallet can be caused to take its load position in the simpliest possible way, if needed even by having the pallet deck 4 drop down by itself.
In order to provide a safe guide of the guide pins 14 the support plates 12 may be formed with guide tubes at the underside thereof.
,., , Preferably the pln 14 is chamfered at the outer edge and the bore 13 of the support plate 12 is correspondingly chamfered so that the pin 14 is guided when entering the said bore 13. Preferably the inner diameter of the guide tube is slightly larger than that diameter of the pin 14 and the guide tube can be tilted in one direction, viz. in a direction perpendicular to the pallet sides 1 and 2, so that the two guide tubes are directed obliquely down towards each other.
Thereby the guide pins 14 will at least partly slide along the outer edges of the guide tubes during their movement downwards whereas they provide a stiff connection in their fully fold down position between the pallet deck and the pallet side.
The above described two sided roller pallet can in addition to the pallet deck 4 be provided with two further supporting planes which are preferably hinge connected to the ; pallet sides 1 and 2, and when transforming the pallet to its nestable or compressed position a lower one of the support planes is fold up along the pallet side 1 and an upper support plane is fold down along the pallet side 2 so as to not to prevent a second pallet to be introduced between the sides 1 and 2.
A pallet according to the invention may also have a rear wall 29 and it may upon need also be provided with a gate whereby the rear wall and the gate are in a way known per se mounted on the pallet sides 1 and 2. The rear wall 29 when nesting the pallet, can be left mounted between the pallet sides whereas the gate is rotated outwards or inwards to contact one of the pallet sides.
In Figure 4 is illustrated how the roller pallet according to Figure 2 can be made nestable or compressed. For this purpose the pallet deck 4 is foled up as previously mentioned, ; whereby the pallet sides 1 and 2 are folded out. Into the roller pallet thus made nestable a further roller pallet can be -. . .
.. . .
10~8310 introduced as illustrated in Figure 4.
In order to make it possible to partly introduce ~oller pallets into each other as illustrated in Figure 4 t,he horiæontal bars 6 of the sides 1 and 2 has to extend on a higher level than the support plates 12, and in Figure 5 is illustrated an embodiment for providing different levels of the horizontal bar 6 and the guide plate 12. The bar 6 is angularly bent down adjacent the outer edge of the pallet side. There may alterna-tively be a spacer between the guide plate 12 and the horizontal bar 6.
The hinge joint between the connection bar 3 and the pallet sides 1 and 2 is best illustrated in Figures 6 and 7.
In the Figures the horizontal bar 6 and the guide plate 23 are welded t,o a connection means in the form of a U-bracket having two branches lOa and lOb and an intermediate web portion lOc, whereby the branches lOa and lOb are formed with bores for the , hinge pin 9. The connection bar 3 is formed with a hinge tube 16 provided between the branches lOa and lOb and hinge connected thereto by means of the hinge pin 9.
It is to be understood that the embodiments of the invention described above and illustrated in the drawings are only illustrating examples and that all kinds of modifications may be effecte'd. Especially it is obvious how the above described guide means for olding the pallet side out and in can be modified for instance by mounting a screw shaft in the pallet deck and that the pallet sides are formed with a corresponding " nut having large inclination, or that the screw curve is provided ' on the pallet deck rather than on the pallet sides whereas the .
; corresponding means of the pallet sides are formed as a guide , , ~'` 30 extending parallelly with the pallet side. Considering the .,. successively increased torque when folding the pallet deck ' upwards it is also obvious to the expert that the screw curve i-` 1(~78310 can be formed with a large inclination in the area opposed the pivot point and thereafter a successively decreased inclination or in any other suitable way.
:
~ 30 ~' ;' ,. ,. : . ~;
Claims (15)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A nestable load pallet or roller pallet comprising two opposed pallet sides, coupling means connected to each of said opposed pallet sides at one of their vertical edges and at least one pallet deck which is mounted between the said pallet sides and which can be rotated in a vertical plane about an axis extending between the two pallet sides whereby the pallet deck in a first fold down position forms a load supporting plane engaging parts of the pallet sides and in a second fold up position the pallet deck takes a substantially vertical position adjacent the said one edge of the pallet sides, the pallet sides being rotatably mounted in a vertical plane in relation to the pallet deck and the pallet sides and the pallet deck being formed with co-operating means for automatically and positively forcing the pallet sides out a predetermined distance when folding the pallet deck up and automatically and positively forcing the pallet sides in to their initial positions when folding the pallet deck down, said means for automatically and positively forcing the pallet sides out and in respectively being formed as a spiral formed or bevelled guide curve and a curve follower co-operating therewith, which parts are mounted in the pallet sides and the pallet deck respectively or vice versa.
2. A pallet according to claim 1, in which the guide curve is mounted on the pallet side and has a curve radius the center of which substantially coincides with the pivot axis for the pallet deck, and the curve follower is formed as a guide hook which is fixed mounted on the pallet deck.
3. A pallet according to claim 2, in which the guide hook extends out from the sides of the pallet deck and some distance from the outer end thereof is formed with a triple side guide slot engaging the guide curve.
4. A pallet according to claim 1, 2 or 3, in which the guide curve is formed on a guide plate which is mounted at the lower inner corner of each pallet side, the guide plate being bevelled in relation to the pallet sides and the guide curve part in each point extending on line with the pallet side.
5. A pallet according to claim 3, in which the pallet deck is displaceably mounted in the longitudinal direction thereof and the guide curve is formed with a slot adjacent the upper edge thereof so that the guide hook in the vertical position of the pallet deck can drop down into the slot of the guide curve to secure the pallet deck against any rotating movement in both directions.
6. A pallet according to claim 5, in which the movabil-ity in the longitudinal direction of the pallet deck is provided by pivot bore thereof being oval in the longitudinal direction of the pallet deck.
7. A pallet according to claim 1, in which the pallet sides at their lower corners which can be fold out and in respect-ively carries support plates forming supporting planes for the pallet deck and which are formed with through bores and the pallet deck adjacent its outer corners is formed with guide pins for co-operation with the bores of the guide plates to provide a locking of the pallet sides in the fold down position of the pallet deck.
8. A pallet according to claim 7, in which the guide bores are extended downwards by guide tubes which extend obliquely downwards-inwards to the center of the pallet deck in a plane perpendicular to the pallet sides.
9 . A pallet according to claim 1, in which the pallet sides are connected to each other over a connection bar on which the pallet sides are rotatably mounted about vertical axis.
10 . A pallet according to claim 9, in which the connection bar is formed by a bar at the end of which hinge tubes are mounted which hinge tubes co-operate with hinge pins of the pallet sides.
11. A pallet according to claim 10, in which the pallet sides are formed by an outer frame tube which is inverse U-shaped and which is at the bottom closed by a horizontal bar, whereby the inner branch of the U-frame adjacent the bottom thereof is cut at a distance corresponding to the height of the hinge tube and whereby the hinge pin is mounted between the said inner branch of the U-frame and a connection eyelet which is mounted at the underside of the horizontal bar.
12. A pallet according to claim 9, 10 or 11, in which the horizontal bar of the connection bar has such vertical dimension that the upper edge thereof at most extends up to the level of the upper surface of the pallet deck and in that the guide tubes are higher than the said bar.
13. A pallet according to claim 9, 10 or 11, in which the horizontal bar of the connection bar is formed with inwardly directed pivot eyelets and the pallet deck is formed with corresponding pivot eyelets which eyelets are connected to each other by means of pivot pins.
14. A pallet according to claim 9, 10 or 11, in which the connection bar carries fixed rollers, and a caster roller is mounted adjacent the outer end of each pallet side.
15. A pallet according to claim 9, 10 or 11, in which at least one of a rear side and a gate is mounted between the two opposed pallet sides.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7610063A SE7610063L (en) | 1976-09-23 | 1976-09-23 | COMPRESSIBLE ROLLER PALLET |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1078310A true CA1078310A (en) | 1980-05-27 |
Family
ID=20328856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA287,041A Expired CA1078310A (en) | 1976-09-23 | 1977-09-19 | Nestable roller pallet |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS5360044A (en) |
| AT (1) | AT349968B (en) |
| AU (1) | AU510024B2 (en) |
| BE (1) | BE858454A (en) |
| CA (1) | CA1078310A (en) |
| CH (1) | CH623008A5 (en) |
| DE (1) | DE2740818A1 (en) |
| DK (1) | DK144174C (en) |
| ES (1) | ES462539A1 (en) |
| FI (1) | FI60536C (en) |
| FR (1) | FR2365489A1 (en) |
| GB (1) | GB1569641A (en) |
| IL (1) | IL52903A (en) |
| NL (1) | NL182388C (en) |
| NO (1) | NO151959C (en) |
| NZ (1) | NZ185120A (en) |
| SE (1) | SE7610063L (en) |
| ZA (1) | ZA775511B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4456273A (en) * | 1980-09-12 | 1984-06-26 | Mckinnon Crerand | Load-carrying trolleys |
| FI69024C (en) * | 1982-06-21 | 1985-12-10 | Elopak Ab Oy | RULLVAGN |
| DK148160C (en) * | 1982-10-18 | 1985-12-02 | Variantsystemet As | ROLL CONTAINER |
| JPS61156623U (en) * | 1985-03-19 | 1986-09-29 | ||
| AT399703B (en) * | 1985-03-26 | 1995-07-25 | Kagerer Eisen Kunststoff | Stackable pallet |
| AT399702B (en) * | 1985-03-26 | 1995-07-25 | Kagerer Eisen Kunststoff | Stackable pallet |
| GB2178393B (en) * | 1985-06-26 | 1989-04-19 | Tidd Strongbox Ltd | Wheeled containers |
| FR2591175A1 (en) * | 1985-12-11 | 1987-06-12 | Cermast | Trolley with castors for transporting loads |
| DE29621725U1 (en) | 1996-12-14 | 1997-02-13 | Heinz Michalski GmbH Einrichtungen in Alu- und Edelstahl Transport-Technik, 91241 Kirchensittenbach | Stackable dolly |
| EP1048546A1 (en) * | 1999-04-27 | 2000-11-02 | Fink, Jean R. | Device to open the sides of a roller-container at the same time |
| NL1030215C2 (en) | 2005-10-18 | 2007-04-19 | Scholte S Metaalbewerking B V | Improved bottom frame for a nestable roll container. |
| DE102014107724A1 (en) * | 2014-06-02 | 2015-12-03 | Wanzl Metallwarenfabrik Gmbh | Dolly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1974440U (en) * | 1967-09-12 | 1967-12-07 | Blickle Fa H | PALLET-LIKE TRANSPORT MEANS. |
| SE353505B (en) * | 1971-06-18 | 1973-02-05 | Innovia Logistikmaskiner Ab | |
| FR2159008A5 (en) * | 1971-10-29 | 1973-06-15 | Rigulag Ab & Co | |
| DE2333453A1 (en) * | 1972-07-04 | 1974-01-24 | Horville Engineering Co Ltd | HAND MOVABLE GOODS CONTAINER |
| US3953047A (en) * | 1975-02-25 | 1976-04-27 | The Cornelius Company | Collapsible stacking cart |
-
1976
- 1976-09-23 SE SE7610063A patent/SE7610063L/en unknown
-
1977
- 1977-06-14 AT AT420577A patent/AT349968B/en not_active IP Right Cessation
- 1977-09-05 CH CH1077177A patent/CH623008A5/en not_active IP Right Cessation
- 1977-09-07 IL IL52903A patent/IL52903A/en unknown
- 1977-09-07 BE BE180707A patent/BE858454A/en not_active IP Right Cessation
- 1977-09-07 NZ NZ185120A patent/NZ185120A/en unknown
- 1977-09-09 FI FI772673A patent/FI60536C/en not_active IP Right Cessation
- 1977-09-09 GB GB37746/77A patent/GB1569641A/en not_active Expired
- 1977-09-10 DE DE19772740818 patent/DE2740818A1/en active Granted
- 1977-09-13 NL NLAANVRAGE7710049,A patent/NL182388C/en not_active IP Right Cessation
- 1977-09-14 ZA ZA00775511A patent/ZA775511B/en unknown
- 1977-09-19 CA CA287,041A patent/CA1078310A/en not_active Expired
- 1977-09-21 ES ES462539A patent/ES462539A1/en not_active Expired
- 1977-09-22 AU AU29041/77A patent/AU510024B2/en not_active Expired
- 1977-09-22 NO NO773252A patent/NO151959C/en unknown
- 1977-09-23 DK DK423177A patent/DK144174C/en not_active IP Right Cessation
- 1977-09-23 FR FR7728763A patent/FR2365489A1/en active Granted
- 1977-09-23 JP JP11503977A patent/JPS5360044A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2365489B1 (en) | 1983-12-16 |
| NO773252L (en) | 1978-03-29 |
| FI60536C (en) | 1982-02-10 |
| AU510024B2 (en) | 1980-06-05 |
| GB1569641A (en) | 1980-06-18 |
| JPS5360044A (en) | 1978-05-30 |
| FI772673A (en) | 1978-03-24 |
| IL52903A0 (en) | 1977-11-30 |
| FI60536B (en) | 1981-10-30 |
| BE858454A (en) | 1978-01-02 |
| DK423177A (en) | 1978-03-24 |
| SE7610063L (en) | 1978-03-24 |
| NO151959B (en) | 1985-04-01 |
| ATA420577A (en) | 1978-09-15 |
| NL182388C (en) | 1988-03-01 |
| NO151959C (en) | 1985-07-10 |
| DK144174C (en) | 1982-06-14 |
| DE2740818A1 (en) | 1978-03-30 |
| ZA775511B (en) | 1978-08-30 |
| IL52903A (en) | 1979-11-30 |
| NL182388B (en) | 1987-10-01 |
| ES462539A1 (en) | 1978-11-16 |
| FR2365489A1 (en) | 1978-04-21 |
| DE2740818C2 (en) | 1988-08-18 |
| NZ185120A (en) | 1981-11-19 |
| AT349968B (en) | 1979-05-10 |
| DK144174B (en) | 1982-01-04 |
| NL7710049A (en) | 1978-03-29 |
| CH623008A5 (en) | 1981-05-15 |
| AU2904177A (en) | 1979-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |